Patent Application
20160279278
The present disclosure relates to methods and apparatuses for dispensing volatile compositions and, more particularly, relates to methods and apparatuses for dispensing volatile compositions using an actuator.
An air freshener can be used to provide a pleasant scent to an area surrounding the air freshener. In certain circumstances, air fresheners can be used in vehicles. Various air fresheners can provide a constant emission of a volatile composition, such as a fragrance, to an interior atmosphere of a vehicle, regardless of whether the vehicle is operating or dormant. Such constant emission of the volatile composition can cause passengers to become acclimated to the volatile composition, thereby essentially rendering the air freshener useless. Further, in some instances, temperatures within the interior atmosphere of the vehicle can be extreme leading to a volatile composition scent that can be either too powerful or not noticeable to the passengers of the vehicle. What is needed is an improvement over the foregoing.
In one non-limiting embodiment of the present disclosure, a volatile composition dispenser is configured to be used in a vehicle. The volatile composition dispenser comprises a housing and a fan positioned at least partially within the housing. The fan is configured to intermittently activate to move a volume of air. The volatile composition dispenser further comprises a controller in electrical communication with the fan and positioned within the housing, and a replaceable unit configured to be one of attached to the housing and positioned at least partially within the housing. The replaceable unit comprises a volatile composition container comprising a volatile composition in at least partially a liquid phase and configured to evaporate into a vapor phase. The fan is configured to intermittently force the volume of air at least partially through the volatile composition container to expel at least most of the vapor phase volatile composition into an atmosphere of a vehicle. The replaceable unit further comprises a power source in electrical communication with the controller.
In another non-limiting embodiment of the present disclosure, a volatile composition dispenser comprises a centrifugal fan configured to intermittently move a volume of air and a controller operably engaged with the centrifugal fan. The volatile composition dispenser further comprises a volatile composition container comprising a volatile composition in at least one of a liquid phase and a vapor phase. The volatile composition container is configured to receive at least most of the volume of air. The volatile composition container further comprises a material comprising at least one surface. The material is configured to at least partially inhibit the volatile composition from transforming from the liquid phase into the vapor phase. A flow path of the volume of air at least partially through the volatile composition container is substantially along the at least one surface of the material.
In still another non-limiting embodiment of the present disclosure, a volatile composition dispenser comprises a housing and a centrifugal fan positioned within the housing. The centrifugal fan is configured to be intermittently activated to move a volume of air. The volatile composition dispenser further comprises a controller in electrical communication with the centrifugal fan and positioned within the housing, and a volatile composition container. The volatile composition container comprises an inner wall, at least one projection extending from the inner wall, and a material configured to contain a volatile composition in at least partially a liquid phase. The at least one projection is configured to engage a portion of the material to maintain the portions of the material at a distance away from the inner wall. In various embodiments the use of projection is optional. The volatile composition container further comprises a space defined intermediate the inner wall and the portions of the material. At least a portion of the liquid phase volatile composition is configured to evaporate into the space to create a saturated vapor phase volatile composition within the space. The centrifugal fan is configured to intermittently force the volume of air at least partially through the space to expel at least most of the saturated vapor phase volatile composition from the volatile composition container.
In yet another non-limiting embodiment of the present disclosure, a replaceable unit for a volatile composition dispenser comprising a centrifugal fan configured to be intermittently activated is provided. The replaceable unit comprises a volatile composition container comprising an inner wall, at least one projection extending from the inner wall, and a material configured to contain a volatile composition in at least partially a liquid phase. The at least one projection is configured to engage a portion of the material to maintain the material at a distance away from the inner wall. The replaceable unit further comprises a space defined intermediate the inner wall and the material. At least a portion of the liquid phase volatile composition is configured to evaporate into the space to create a saturated vapor phase volatile composition within the space. The replaceable unit further comprises a power source configured to provide power to the centrifugal fan.
In yet another non-limiting embodiment of the present disclosure, a method of dispensing a volatile composition comprises providing a replaceable unit comprising a power source and a volatile composition container comprising a volatile composition. The method further comprises providing a centrifugal fan powered by the power source and in fluid communication with the volatile composition container, evaporating a portion of the volatile composition within the volatile composition container, and using the centrifugal fan to intermittently force a volume of air at least partially through the volatile composition container to expel at least most of the evaporated portion of the volatile composition from the volatile composition container.
The above-mentioned and other features and advantages of the present disclosure, and the manner of attaining them, will become more apparent and the present disclosure itself will be better understood by reference to the following description of various non-limiting embodiments of the present disclosure taken in conjunction with the accompanying drawings, wherein:
Various embodiments will now be described to provide an overall understanding of the principles of the structure, function, manufacture, and use of the apparatuses and methods disclosed herein. One or more examples of these embodiments are illustrated in the accompanying drawings. Those of ordinary skill in the art will understand that the apparatuses and methods specifically described herein and illustrated in the accompanying drawings are non-limiting example embodiments and that the scope of the various embodiments of the present disclosure is defined solely by the claims. The features illustrated or described in connection with one example embodiment can be combined with the features of other example embodiments. Such modifications and variations are intended to be included within the scope of the present disclosure.
According to various embodiments, a volatile composition dispenser can be used to dispense a volatile composition and/or other solution or composition, such as a fragrance or an insecticide, for example, to an area surrounding the dispenser. In certain embodiments, the volatile composition can comprise a single chemical and/or a single material that is capable of entering the vapor phase or, more commonly, the volatile composition can comprise a mixture of chemicals and/or materials that are capable of entering the vapor phase. In one non-limiting embodiment, the volatile composition can also comprise non-vaporizable components in addition to vaporizable components, for example. In various embodiments, the volatile compositions can comprise, but are not limited to, substances that can function as air fresheners, deodorants, odor neutralizing materials, odor blocking materials, odor masking materials, aromatherapy materials, aromachology materials, insecticides, and/or combinations thereof. In other various embodiments, the volatile compositions can comprise other materials that can act in their vapor phase to modify, enhance, and/or treat an atmosphere or an environment. In one non-limiting embodiment, the volatile composition dispenser can be configured for use within an interior space, compartment, area, and/or atmosphere of a vehicle, for example, although the present disclosure is not limited to such use. The term “vehicle” can include a car, a van, an SUV, a truck, a train, a boat, and/or a plane, for example, or any other suitable apparatus for transporting people or things. While the volatile composition dispenser will be discussed herein with reference to use within a vehicle, those of skill in the art will understand that the volatile composition dispenser can be configured for use in any environment, such as a domestic environment, for example, and can be configured to dispense any suitable solutions, chemical, materials, and/or compositions.
In various embodiments, the volatile composition dispensed by the volatile composition dispenser and can comprise any suitable solution, chemical, material, and/or composition configured to make the interior atmosphere of the vehicle smell more pleasant to passengers and/or provide passengers with a good open door experience when entering the vehicle, for example. The volatile composition dispenser can evaporate a pleasant fragrance and/or evaporate a volatile composition that can neutralize and/or at least partially eliminate malodors, for example. In one non-limiting embodiment, the volatile composition dispenser can be configured to intermittently and/or periodically, over predetermined time intervals, provide a dose of the volatile composition to the interior atmosphere of the vehicle to prevent, or at least inhibit, the passengers of the vehicle from becoming acclimated to the smell of the volatile composition over a period of time. In such an embodiment, by selectively and/or intermittently dosing the volatile composition within the interior atmosphere of the vehicle, the passenger's sense of smell may be more aware of the volatile composition when it is dispensed. Optimal dosing time intervals and dosing amounts can vary depending on various conditions within the interior atmosphere of the vehicle, such as temperature, humidity, volume, and/or air flow conditions, for example.
When a passenger enters a vehicle having a dispenser that provides a constant dose and/or that constantly evaporates a volatile composition, the passenger can be overwhelmed by and/or not aware of the dispensed volatile composition because of the extreme conditions, such as temperature, for example, that can occur within the interior atmosphere of the vehicle. In various circumstances, volatile compositions can evaporate faster at higher temperatures and slower at lower temperatures. In some instances, the temperature in the interior atmosphere of a vehicle can get as high as 170 degrees Fahrenheit and as low as below freezing. If the same amount of a volatile composition was dispensed at each extreme of the large temperature range, a passenger could be significantly overpowered by the volatile composition at the higher temperature extreme and may not even notice and/or smell the volatile composition at the lower temperature extreme. As a result, a volatile composition dispenser that provides volatile composition dosing that is correlated to the temperature conditions or other various conditions of the interior atmosphere of the vehicle can be quite useful. In various embodiments, a smaller volatile composition dose amount can be provided by the dispenser at higher temperatures, while a larger volatile composition dose amount can be provided by the dispenser at lower temperatures, for example. In one non-limiting embodiment, a volatile composition dispenser can comprise a temperature sensor configured to determine the temperature within the interior atmosphere of the vehicle, such that the volatile composition dispenser can selectively dose the interior atmosphere of the vehicle appropriately for particular temperature conditions.
In various embodiments, referring to
In various embodiments, referring to
In one non-limiting embodiment, referring to
In various embodiments, referring to
In various non-limiting embodiments the high surface area material 64 may have a volume of about 2 cm3 to about 16 cm3 or alternatively of about 5 cm3 to about 12 cm3 and an evaporative surface area (i.e.; the surface area of the high surface area material exposed to air flow) of about 5 cm2 to about 50 cm2 or alternatively of about 15 cm2 to about 45 cm2. The high surface area material 64 may contain a volatile composition wherein the volume of volatile composition within the high surface area material 64 may be from about 1.5 ml to about 12 ml or alternatively, from about 4 ml to about 10 ml.
In one non-limiting embodiment, as illustrated in
In various embodiments, the replaceable units 32 or 32′ can allow for renewal of the volatile composition dispenser 10 without replacement of the controller 30, the actuator 28, and/or the entire volatile composition dispenser 10 itself. For example, the replaceable unit 32 or 32′ can be replaced with a different replaceable unit 32 or 32′. Those of skill in the art will recognize that the replaceable unit 32′ will be inserted into a housing (not illustrated) and that the replaceable unit 32 will be attached to the housing 12. In some embodiments, the replaceable unit 32′ can be inserted into a shell 23 and attached to the housing 12. Hereafter, the replaceable unit 32 and the replaceable unit 32′ will be referred to as “replaceable unit 32”, unless otherwise noted.
In various embodiments, the replaceability of the replaceable unit 32 can also allow the user to easily change from dispensing one volatile composition to another volatile composition in a safe, substantially leak-free, and simple manner. In some instances, the user can have difficultly determining when to replace the volatile composition container and/or the power source 38 in the volatile composition dispenser 10. In various circumstances, the life of a volatile composition within the volatile composition container can be extended or shortened based on various operating and/or environmental conditions that the volatile composition dispenser 10 is exposed to, such as ambient air temperature, for example. In one non-limiting embodiment, by providing a replaceable unit having both a volatile composition container and a power source, the user does not now have to “guess” when the volatile composition is expired and/or is at least mostly expired and can merely rely on the power level of the power source 38 to determine when replacement of the replaceable unit 32 is required. In various embodiments, the controller 30 can measure the voltage, the amperage, and/or the remaining power level of the power source 38, for example, and can indicate to the user, through the user feedback module 16, when replacement of the replaceable unit 32 is required. In one non-limiting embodiment, by providing the replaceable unit 32, the volatile composition dispenser 10 can operate at a high level of efficiency in that the volatile composition container 33 or 50 will usually have an adequate amount of volatile composition therein and the power source 38 will usually be able to provide adequate power to the volatile composition dispenser 10 to maintain the desired delivery rate of the volatile composition. Additionally, the replaceable unit 32 can possibly prevent, or at least inhibit, the requirement for separate replacement of a power source and/or a volatile composition container, which could cause delivery of the volatile composition below desired levels, owing to either an inadequate power level in the power source and/or an inadequate amount of volatile composition remaining within the volatile composition container. The replaceable unit 32 solves these issues by providing a fresh power source 38 and a fresh volatile composition container 33 or 50 containing a fresh volatile composition each time the replaceable unit 32 is replaced by a user.
In various embodiments, the power source 38 can comprise a battery, such as a AA battery, a AAA battery, a 9 volt battery, and/or other suitable battery, for example. In one non-limiting embodiment, the replaceable unit 32 can be disposable and can be configured to prevent, or at least inhibit, leakage of the volatile composition therefrom. In various embodiments, the power source 38 can provide power to the controller 30, such that the controller 30 can power the actuator 28, the user feedback module 16, a temperature sensor, an air flow sensor, a motion sensor, and/or various other sensors, for example. In various embodiments, the replaceable unit 32 can comprise a power source cap 44 and a volatile composition container cap 46. In various embodiments, the volatile composition container cap 46 has a sealed engagement with the volatile composition container 50. In one non-limiting embodiment, referring to
Further to the above, in still other various embodiments, the volatile composition dispenser 10 can be powered by a power source of the vehicle, such as a cigarette lighter plug or an auxiliary power port, for example. In one non-limiting embodiment, a solar power source, such as a solar cell, for example, can be used to power the volatile composition dispenser 10. In various embodiments, the solar cell (i.e., a photovoltaic cell) can be positioned on an outer portion of the volatile composition dispenser 10 or in communication with the volatile composition dispenser 10, such that the solar cell can receive light that can be transformed into energy to power the volatile composition dispenser 10. In other various embodiments, the volatile composition dispenser 10 can comprise an electrical cord in electrical communication with the controller 30 or other components of the volatile composition dispenser 10, such that when the electrical cord is plugged into a conventional electrical outlet, the controller 30 can be powered. In one non-limiting embodiment, the power source 38 can be a rechargeable power source that can be recharged using any suitable technique. Those of skill in the art, upon review of the present disclosure, will recognize that any other suitable method or device can be used to provide power to the volatile composition dispenser 10.
In various embodiments, referring to
In one non-limiting embodiment, referring to
Furthermore, referring to
In one non-limiting embodiment, the volatile composition container 50 of the replaceable unit 32 can comprise a plurality of inlet orifices 56 and a single outlet orifice 18. In other embodiments, the replaceable unit 32 can comprise a single inlet orifice 56 and a plurality of outlet orifices. In still other embodiments, the replaceable unit 32 can comprise a plurality of inlet orifices 56 and a plurality of outlet orifices 18. In one non-limiting embodiment, referring to
In various embodiments, however, the inlet orifices of the volatile composition containers 33 and 50 can include other shapes, such as circular, elongate, square, triangular, for example, or other suitable shape configured to receive the volume of air from the actuator 28. The inlet orifice 56 can also be located in other suitable locations on the volatile composition container cap 46, such as centered or offset from a centerline (in a longitudinal direction) of volatile composition container 50. The inlet orifice 58 can also be located in other suitable locations on the volatile composition container 33, such as centered or offset from a centerline (in a longitudinal direction) of the volatile composition container 33. Furthermore, the diameter, perimeter, and/or length of the outlet orifices, such as orifices 18 and 58, for example, can be sized, shaped, and/or configured to minimize pressure losses from the actuator 28 into the volatile composition container 33 or 50 and at least inhibit evaporation of the volatile composition from the volatile composition containers 33 and 50. In various embodiments, the volume of air forced through the volatile composition container 33 or 50 can cause the volatile composition dispenser 10 to dispense at least a portion of the volume of air and at least a portion of a vapor phase volatile composition situated within the volatile composition container 33 or 50 through the outlet orifice 18 and to the interior atmosphere of the vehicle. In various embodiments, the interior atmosphere of the vehicle can be a passenger compartment, a trunk, a storage space, an enclosed space, and/or another space, for example.
In one non-limiting embodiment, referring to
In various embodiments, the outlet orifice 18, any orifices on the volatile composition container 33, and/or optionally the inlet orifice 56, can be sized to at least inhibit molecular diffusion or leakage of the volatile composition through the orifices when the actuator 28 is not forcing the vapor phase volatile composition out of the volatile composition container 50 or the volatile composition container 33. In one non-limiting embodiment, a diameter of the various orifices can be sized in the range of about 0.1 mm to about 6 mm, alternatively about 1 mm to about 4 mm, alternatively about 1.5 mm to about 3.5 mm, and alternatively about 2 mm to about 3 mm, for example. In one non-limiting embodiment, each of the inlet orifices and outlet orifices can have a cross-sectional area in the range of about 0.008 cm2 to about 0.50 cm2 and, alternatively about 0.01 cm2 to about 0.2 cm2, for example. In one non-limiting embodiment, the inlet orifice 56 can have a length of about 0.3 mm to about 20 mm, and alternatively about 5 mm to about 10 mm. In one non-limiting embodiment, the outlet orifice 18 can have a different size than the inlet orifice 56. In various embodiments, the volatile composition dispenser 10 can have a plurality of inlet and/or outlet orifices, each with a different size, shape, geometry, and/or configuration. In other various embodiments, depending on the properties of the volatile composition being dispensed from the volatile composition dispenser 10, other orifice sizes and geometries can be used and are within the scope of the present disclosure. In further various embodiments, a plurality of orifices can be used in any suitable configuration to maximize and/or minimize the disbursement of the vapor phase volatile composition from the volatile composition container. In certain embodiments, the sizes of the orifices can be at least partially related to the speed, such as the rotational speed, for example, of the actuator 28 in order to provide a desired flow rate through the volatile composition container 50 and/or the volatile composition container 33 and a desired pressure drop within the volatile composition container 50 and/or the volatile composition container 33. Non-limiting examples of suitable air flow rates are from about 2 cm3/second to about 20 cm3/second or from about 5 cm3/second to about 15 cm3/second.
In general, when the actuator 28 is not forcing at least a portion of the vapor phase volatile composition through the outlet orifice 18, the outlet orifice 18 can be considered to be “off”, or in a non-dispensing state, because of the geometry, location, configuration, and/or the size of the outlet orifice 18, which is designed to minimize evaporative losses of the volatile composition when “off”. In one non-limiting embodiment, the evaporative losses though the outlet orifice 18 may never be completely eliminated, but generally may be less than about 10 mg/hour, alternatively less than about 3 mg/hour, and alternatively less than about 1 mg/hour, and alternatively less than about 0.1 mg/hour. In various embodiments, the geometry, size, and/or shape of the various orifices can be configured to yield a maximum mass flux of at least a portion of the volatile composition and a portion of the volume of air for various operating conditions of the volatile composition dispenser 10, while minimizing evaporative losses when the actuator 28 is not in an active state. This may be done, for example, by modeling the volatile composition container 50 and/or the volatile composition container 33 as a volume of ideal gas a mass flow governed by Bernoulli's equation, but modified to include a discharge coefficient. In one non-limiting embodiment, Fick's law (Eq. 1) can be used to determine orifice sizing and/or the configuration of various diffusion-limiting aspects of the volatile composition dispenser 10:
Where, K is the binary diffusion coefficient of the volatile composition, D is the orifice diameter, and L is the orifice length. The cross-sectional area of the orifice can be the primary driver of the flow rate when the actuator 28 is actively moving air through the orifice, whereas evaporation losses of the volatile composition (e.g., when the actuator 28 is in an inactive state) can be related to the cross-sectional area and the length of the orifice. Accordingly, an increase in the cross-sectional area of the orifice can impact both evaporation rates of the volatile composition and the flow rate, and an increase in the length of the orifice can mainly impact the evaporation rates of the volatile composition. While the orifice configurations have been discussed with regard to the above embodiments, those of skill in the art will understand, upon consideration of the present disclosure, that the orifice configurations can be applied to other various embodiments in a similar fashion.
In various embodiments, referring to
Example configurations of the high surface area material 64 can comprise a rectangular solid, a tube, a cylinder, a channel, and/or a passage; a rectangular solid, a tube, a cylinder, a channel, and/or a passage with fins; and/or other stacks of fins similar to those used in heat exchanger designs, for example. In one non-limiting embodiment, the high surface area material 64 can be positioned adjacent to an interior wall or surface of the volatile composition container 50 or the volatile composition container 33, or, in other embodiments, the high surface area material 64 can be maintained at a distance away from an interior wall or surface of the volatile composition container 50 or the volatile composition container 33 using one or more projections, such as standoffs, pegs, posts, ribs, extensions, elongate members, and/or pins, for example. It may be desirable for there to be a gap between the high surface area material 64 and the inner wall 41 or surface of the volatile composition container 33 or 50 wherein the gap may be from about 0.5 mm to about 3 mm or alternatively from about 1 mm to about 2.5 mm. In various embodiments, the high surface area material 64 can be of sufficient size to contain a desired amount of the volatile composition 49 and, depending upon the materials selected and the configuration, the volume of the high surface area material 64 can be larger than the volume of the volatile composition 49 contained in the volatile composition container 50 or 33. In one example of a vehicle application of the volatile composition dispenser 10, the volatile composition container 50 and/or the volatile composition container 33 can have a volume of about 2 cm3 to about 25 cm3, and the high surface area material 64 can have a volume of about 2 cm3 to about 20 cm3, to contain about 1 cm3 to about 10 cm3 of the volatile composition. In another non-limiting example embodiment, the volatile composition container 50 or 33 can have a volume of about 2.5 cm3 to about 16 cm3 and the high surface area material 64 can have a void volume of about 1.5 cm3 to about 12 cm3, so as to contain about 1.5 ml to about 12 ml of the volatile composition 49. In one non-limiting embodiment, the volatile composition container 50 can have dimensions of about 14 mm by about 14 mm by about 54 mm.
In one non-limiting embodiment, referring to
In one non-limiting embodiment, referring to
As some volatile compositions tend to evaporate into a vapor phase to achieve a more equilibrium state, the high surface area material 64 can be configured at least inhibit this evaporation and at least partially maintain a portion of the volatile composition 49 in a liquid phase, a semi-liquid phase, and/or a gel phase, to at least inhibit evaporation of the volatile composition and thereby at least inhibit diffusion of the vapor phase volatile composition 49′ from the volatile composition container 50 and/or the volatile composition container 33 prior to the desired dispensing time. Additionally, the high surface area material 64 can at least inhibit leakage of the liquid volatile composition 49 from the volatile composition container 50 or 33. In various embodiments, as the volatile composition 49 transforms into its vapor phase over a period of time, the volume of the high surface area material 64 can be reduced, thereby providing more space in the volatile composition container 50 or 33 to receive the vapor phase volatile composition 49′. In one non-limiting embodiment, as the volume of air from the actuator 28 enters the volatile composition container 50 through the inlet 56, the volume of air can mix with the vapor phase volatile composition 49′ to cause a portion of the vapor phase volatile composition 49′ to be ejected though the outlet orifice 18 and into the atmosphere of the vehicle, for example. In various embodiments, the outlet orifice 18 can be in fluid communication with the space 86 within the volatile composition container 50 comprising the vapor phase volatile composition. In still other various embodiments, the space 86 can be defined proximate to a surface 65 of the high surface area material 64 and/or intermediate the surface 65 of the high surface area material and a surface or inner wall of the volatile composition container 33, depending on whether the volatile composition container 33 is provided in a particular embodiment. In one non-limiting embodiment, the outlet orifice 18 can be located on a top portion and/or a side portion of the volatile composition container 50 and in some embodiments a plurality of outlet orifices 18 can be provided. Any other suitable configurations of the outlet orifice 18, the high surface area material 64, and/or the space 86 can be provided within the volatile composition container 50 or 33.
In one non-limiting embodiment, referring to
In various embodiments, as illustrated in
In various embodiments, referring to
Further to the above, in various embodiments, referring to
In one non-limiting embodiment, the motor 102 can be a Mabuchi RF-J20WA-5Z145 motor that rotates the drive shaft 101 at about 6200 revolutions per minute when 0.7 VDC is supplied to the motor 102 from the power source 38 and rotates the driveshaft 104 at about 9400 revolutions per minute when 1.0 VDC is supplied to the motor 102 from the power source 38. In various embodiments, the flow rate of the volume of air generated by the motor 102 can be in the range of about 1.0 to about 8.0 mL/sec at about 0.7 VDC to about 6.0 to about 16.0 mL/sec at 1.0 VDC, depending upon the cross sectional area of the inlet orifice 56 and the outlet orifice 18. By supplying various voltage levels to the motor 102, the rotational speed of the drive shaft 101 and the resultant flow rate of the volume of air can be varied. Any other suitable motor can also be used with the fan assembly 100, such as a Sunon UB393-10 fan assembly, for example. Additionally, the controller 30 can supply the motor 102 with voltage using any suitable technique known to those of skill in the art. In various embodiments, a pulse width modulation technique can be used to provide voltage to the motor 102 over a specified range, such as about 0.7 VDC to about 1.0 VDC, for example. Additional circuitry or components, such as an analog-to-digital converter, can be used to compensate for various factors, such as the power source voltage and the ambient temperature, for example. In order to isolate or limit vibration due to the rotation of the drive shaft 101 and/or the rotatable hub 118, vibration suppression devices or techniques can be used, such as silicon or thermoplastic elastomeric fan supports, for example, and/or the use of a gasket at the interface of the replaceable unit 32 and the housing 12.
In various embodiments, the controller 30 can be positioned in electrical communication with the actuator 28, such that the controller 30 can instruct the actuator 28 when to activate and which speed to rotate in order to force the volume of air through the volatile composition container 50. In one non-limiting embodiment, the controller 30 can be any suitable type of controller, such as a microcontroller, for example. In one non-limiting embodiment, the controller 30 can be a Texas Instruments MSP430F2132 controller, for example. In various embodiments, the controller 30 can comprise one or more user input buttons or switches 26 configured to provide an input signal to the controller 30 when depressed by a user, such that the controller 30 can send corresponding output signals to the actuator 28 and/or the user feedback module 16, for example. In one non-limiting embodiment, the various user input buttons or switches 26 can comprise a power on/off switch configured to power on or power off the volatile composition dispenser 10 and at least one volatile composition dose amount button configured to allow the user to adjust the amount of volatile composition dispensed by the volatile composition dispenser 10. As will be appreciated, the input buttons or switches 26 can be any combination of buttons and/or switches, such as push buttons, sliders, dials, knobs, for example. In various embodiments, the amount of the volatile composition dispensed over a predetermined time interval can be controlled by adjusting the rate at which the actuator 28 is activated by the controller 30 (i.e., by adjusting the time period the actuator 28 is active and the time period the actuator 28 is inactive), by adjusting the speed at which the air is moved when the actuator 28 is active (i.e., by adjusting the rotational speed by adjusting the voltage to the motor 102), and/or by a combination of both techniques. In one non-limiting embodiment, the volatile composition dispenser 10 can have a “boost” button for delivering a dose of the volatile composition to the atmosphere of the vehicle on demand. For example, if the boost button is depressed or otherwise activated, the actuator 28 can be activated for a specified time period, such as 30 to 60 seconds or at a specified rotational speed, for example.
In various embodiments, the controller 30 can also be in electrical communication with a temperature sensor configured to sense the temperature within the interior atmosphere of the vehicle, for example, and a motion sensor configured to determine whether the vehicle is in motion. In various embodiments, the temperature sensor can send a signal to the controller 30 indicative of the temperature of the vehicle, such that the controller 30 can provide an output signal to the actuator 28, or other various components of the volatile composition dispenser 10, indicative of a volatile composition dosing amount for a particular temperature and/or temperature range. For example, higher temperature ranges may require greater dose amounts than lower temperature ranges to achieve the desired result. In one non-limiting embodiment, the motion detector can send a signal to the controller 30 indicative of whether the vehicle is in motion, such that the controller 30 can adjust the volatile composition dosing amount appropriately by instructing the actuator 28 accordingly. If the vehicle is not in motion, the volatile composition dosing amount can be reduced or, in other various embodiments, the volatile composition dispenser 10 can remain inactive, for example. As a result, the volatile composition dispenser 10 can be power efficient such that it can maximize the life of the power source 38, for example. In various embodiments, if the vehicle is moving, the appropriate volatile composition dosing amount can continue to be dispensed in an intermittent or periodic fashion to inhibit user acclimation to the volatile composition. In such an embodiment, the volatile composition dispenser 10 can be activated for 1-30 seconds, for example, and then be inactive for 10-200 seconds, for example. In other various embodiments, the volatile composition dispenser 10 can be set by a user to provide a desired intermittent dosing amount.
In various embodiments, the controller 30 can also be in communication with an air flow sensor, a volatile composition concentration sensor, and/or a timer. In one non-limiting embodiment, the air flow sensor can be configured to determine the air flow rate within the interior atmosphere of the vehicle. In such an embodiment, the air flow sensor can send a signal indicative of the air flow rate to the controller 30, such that the controller can provide a volatile composition dosing instruction to the actuator 28 corresponding to the air flow rate within the atmosphere of the vehicle. The air flow sensor can also be used to detect the air circulation within the interior atmosphere of the vehicle and/or whether one or more windows are down, for example, to determine how many air exchanges are taking place in the interior atmosphere of the vehicle over a particular interval of time. This information can then be correlated to a volatile composition dosing amount. In various embodiments, the concentration sensor can sense the concentration of the volatile composition within the interior atmosphere of the vehicle. Similar to the air flow sensor, the concentration sensor can send a signal indicative of the concentration of the volatile composition in the interior atmosphere of the vehicle to the controller 30, such that the controller 30 can adjust the volatile composition dosing amount according to the concentration of the atmosphere of the vehicle. In various embodiments, the timer can be configured to send a signal to the controller 30, after a predetermined time interval, to indicate to the controller 30 that a volatile composition dose needs to be provided by the dispenser 10. In various embodiments, at least two of the air flow sensor, the temperature sensor, the motion sensor, the concentration sensor, and the timer can be used in conjunction with each other to instruct the volatile composition dispenser 10 to dispense an appropriate volatile composition dose amount to the interior atmosphere of the vehicle, for example. In one non-limiting embodiment, the volatile composition dispenser 10 can also comprise a volatile composition sensor configured to sense information regarding the amount and type of the volatile composition 49 within volatile composition dispenser 10 and relay the same information to the controller 30 for processing.
In various embodiments, the control technique or approach for the actuator 28 can be at least based on characteristics of the high surface are material 64, the volatile composition, and/or the volatile composition container 50. In various embodiments, the control technique or approach for the actuator 28 can be at least based on characteristics of the volatile composition container 33. Volatile compositions with lower vapor pressures will likely evaporate slower than volatile compositions with higher vapor pressures. In various embodiments, the actuator 28 may not be activated until the space 86 within the volatile composition container 50 has reached full saturation or near full saturation of vapor phase volatile composition 49′. In one non-limiting embodiment, the deactivation time period of the actuator 28 can be related to the time period necessary for the volatile composition 49 to evaporate and saturate, or at least partially saturate, the space 86 with the vapor phase volatile composition 49′. In one non-limiting embodiment, the activation time period of the actuator 28 can be related to the time period necessary to expel substantially all of the vapor phase volatile composition 49′ from the of the volatile composition container 50 into the atmosphere of the vehicle. Once the vapor has been expelled from the volatile composition container 50, the actuator 28 can be placed in an inactive state to again allow a portion of the volatile composition 49 to enter the vapor phase. As will be appreciated by those of skill in the art, for a particular volatile composition, volatile composition containers with a relatively greater volume of the space 86 may require a longer time period to achieve the desired saturation levels, while volatile composition containers with a relatively lesser volume of the space 86 may require a shorter time period to achieve the desired saturation levels. Furthermore, as the level of the volatile compound 49 and/or the size of the high surface area material 64 decreases over time, the time period necessary for saturation, or partial saturation, may increase. The controller 30 can factor these characterizations when determining the various control techniques for the actuator 28. In one non-limiting embodiment, the time period required to achieve vapor phase volatile composition saturation can be less than about 5 seconds, for example. Formulations with higher vapor pressures may evaporate into a vapor phase at a faster rate than formulations with lower vapor pressures. Therefore, formulations with higher vapor pressures may reach equilibrium faster than formulations with lower vapor pressures.
By activating the actuator 28 for a period of time equal to, or approximately equal to, the amount to time necessary to expel at least most of the vapor phase volatile composition 49′, the lifetime of the power source 38 can be optimized. Through control of the actuator 28, maximum vapor phase volatile composition 49′ release can be achieved with a minimum amount of actuator running time. In various embodiments, the sequencing or pattern of activator actuation, or the flow rate of the volume of air produced by the actuator 28, can be adjusted to allow full or near full saturation of the volatile composition within the space for maximizing the vapor phase volatile composition release. In one non-limiting embodiment, the actuator 28 can be activated for about 1-10 seconds and then deactivated for about 1-10 seconds, for example.
In various embodiments, the duration of activation of the actuator 28 or the flow rate of the volume of air provided by the actuator 28 can be increased to provide a higher intensity of volatile composition expulsion from the volatile composition dispenser 10. The actuator 28 can be actuated for about 10-60 seconds and then deactivated for about 10-300 seconds, for example. By providing a period of time between consecutive activations of the actuator 28, a user is more likely to notice a scent of the volatile composition 49 again and hence avoid habituation. The use of the higher intensity expulsion also, in various embodiments, allows the volatile organic compositions (VOCs) present in the vehicle, and other background volatiles, such as malodors, for example, to be at least partially overcome. In one non-limiting embodiment, a typical vehicle may have VOCs that range between 10 and 1000 parts/per/billion. Some newer vehicle may have VOCs that are in the parts/per/million level. As may be appreciated by those skilled in the art, the level of VOCs present in the vehicle may be dependent on a number of factors, such as ambient temperature, for example. In some circumstances, VOCs in the atmosphere of a vehicle may interfere with the sensorial detection of fragrances released into the air by the human nose. Accordingly, pulsing a higher level of the vapor phase volatile composition 49′ into the atmosphere of the vehicle may allow a user to more strongly detect the vapor phase volatile composition 49′. In one non-limiting embodiment, actuating the actuator 28 for 10-60 seconds can allow the vapor phase volatile composition 49′ to be more noticeable and providing a delay of about 10-300 seconds can allow the concentration to drop, allowing the user or passenger to more strongly notice the next expulsion. As will be appreciated by those of skill in the art, different pulsing frequencies and/or different air flow rates can be used to deliver different scent experiences, for example.
Table 2 provides example non-limiting activation patterns of the actuator 28.
In various embodiments, the release rate of a volatile composition 50 from the volatile composition dispenser 10 can be about 0.5-12 mg/hour, alternatively about 1.0-8.0 mg/hour, or alternatively about 2.0-4.0 mg/hour for example. In one non-limiting embodiment, a high surface area material 64 having dimensions of about 10 mm×10 mm×50 mm is contained within the volatile composition container 50 or 33. In this embodiment, the high surface area material 64 is an absorbent polyolefin fiber, available from Filtrona Porous Technologies (D4507B). As may be appreciated, however, other suitable materials may be used. In this embodiment, the high surface area material 64 is loaded with 4 grams of a volatile composition 49, such as Benzyl Aceatate, for example. In this embodiment, the volatile composition 49 has a vapor pressure of 190 Pa at 20° C. As may be appreciated, other volatile compositions may have a variety of vapor pressures. In this embodiment, with inlet and outlet orifice dimensions of 2.5 mm diameter and 10 mm long, the release rate of the volatile composition 49 from the volatile composition dispenser 10 is about 3.5 mg/hour when the actuator 28 runs at a 20% duty cycle (30 seconds on/120 seconds off) at 0.7 VDC at an ambient temperature of 70° F. In such an embodiment, the air flow rate through the volatile composition container 50 may be about 5.5 cm3/sec. In one non-limiting embodiment, the release rate of the volatile composition 49 from the volatile composition dispenser 10 is about 5 mg/hour when the actuator 28 runs at a 20% duty cycle (30 seconds on/120 seconds off) at 1.0 VDC at an ambient temperature of 70° F. In such an embodiment, the air flow rate through the volatile composition container 50 may be about 12 cc/sec. Comparatively, the release rate of the volatile composition 49 may be about 16 mg/hour and about 24 mg/hour when the actuator 28 runs at a 100% duty cycle at 0.7 VDC and 1.0 VDC, respectively, at an ambient temperature of 70° F. While an operation duty cycle of 100% for an extended period of time may decrease the level of the power in the power source 38, in various embodiments, the actuator may operate at a high duty cycle, such as 100%, for a relatively short period of time, such as less than about 30 seconds, or less than about 10 seconds. In these embodiments, such operation (i.e., a “boost” operation), can be used to temporarily increase the release rate of the volatile composition dispenser 10 to overcome a malodor or overcome the lack of fragrance noticeably, which may be caused, in part, by the presence of VOC's as described previously.
In various embodiments, the volatile composition dispenser 10 can comprise a user feedback module 16 configured to provide feedback to the user regarding the status of the volatile composition dispenser 10. In one non-limiting embodiment, the user feedback module 16 can be used to alert the user of a property of the volatile composition dispenser 10. In such embodiments, the feedback can be visual and/or audible and can indicate to the user, among other things, whether the volatile composition dispenser 10 is powered on, what volatile composition dosing amount is being dispensed, the power level of the power source 38, the amount, type, or level of the volatile composition 49 within the volatile composition container 50, and/or any other suitable feedback helpful or beneficial to the user. In various embodiments, referring to
In various embodiments, the replaceable unit 32 can comprise any number of containers, each container comprising a different, slightly different, or the same volatile composition. In other various embodiments, the replaceable unit 32 can comprise multiple chambers therein, each chamber comprising a different, slightly different, or the same volatile composition, for example. In one non-limiting embodiment, each volatile composition can comprise a different, slightly different, or the same vapor pressure range, for example. This feature can be useful when a user wants to dispense a first dose amount of a first volatile composition and a second dose amount of a second volatile composition, for example. In an instance in which more than one volatile compound is within one container or chamber of a container, the volatile composition with the higher vapor pressure range may transform from a liquid phase, a semi-liquid, and/or a gel phase into a vapor phase prior to the volatile composition with the lower vapor pressure range transforming into a vapor phase. In this circumstance, the volatile composition with the higher vapor pressure range would likely be dispensed first, while the volatile composition with the lower vapor pressure range would likely be dispensed second. In various embodiments, where different volatile compositions with different vapor pressure ranges are in separate containers or chambers, the different volatile compositions can be dispensed from their respective containers simultaneously, for example. As a result, various volatile compositions can be dispensed from the volatile composition dispenser 10 to create a mixture of scents, for example, if the volatile composition is a fragrance.
Further to the above, in various embodiments, the multiple volatile composition containers can be positioned in series, in parallel, and/or in any other suitable configuration. In one non-limiting embodiment, referring to
In various embodiments,
With some volatile compositions (for instance those comprising fragrances) it may be helpful to adjust the fan speed, frequency of run time, or on/off time to compensate for the changing volatile composition formulation as high vapor pressure volatile composition raw materials will evaporate more quickly than low vapor pressure raw materials. In this case it may optionally be desirable to have the controller operate the fan more frequently as the volatile composition is evaporated over a period of many days. For instance in one non-limiting example, the fan could run at 10% duty cycle for the first 10 days of usage but then slowly increase up to about 30% to about 40% duty cycle from days 11 up to 60 days. In this way the fan frequency or duration can be increased to compensate for potentially a decline in fragrance intensity. By adjusting for the age, it is possible to deliver a more consistent scent intensity even as the fragrance amount and mixture of high to low vapor pressure components is changing with time. Further as the replaceable unit 32 or 32′ or 232 ages, the controller 30 or 230 could also use a motion detector to know when a user is operating the vehicle and could then adjust the fan operating conditions differently for when the vehicle is in operation versus when the vehicle is in a parked condition for several minutes or hours.
One non-limiting example of a means of keeping track of run time of the replaceable unit 32 or 32′ or 232 is to monitor the voltage of the battery associated with the replaceable unit 32 or 32′ or 232. For instance, a new AA battery may be 1.60 Volts to about 1.65 Volts while a AA battery that was used for thirty days might have a voltage of about 1.2 Volts to about 1.45 Volts. By monitoring the voltage of the battery, the controller 30 or 230 can recognize the life of the replaceable unit 32 or 32′ or 232 and can adjust operating conditions to deliver a consistent scent experience over the life of the replaceable unit 32 or 32′ or 232.
Another non-limiting example of a means to monitor time, is to start a timer when the replaceable unit 32 or 32′ or 232 is inserted and to keep track of hours/minutes that the fan has operated. As mentioned above, the fan time could be adjusted as the product ages to deliver a more consistent scent experience.
In the instance where the battery voltage or run time is viewed as the indicator of the full life of the replaceable unit 32 or 32′ or 232, the controller 30 or 230 could be programmed to provide a signal to the user such as turning on a red light or provide a flashing light to indicate that the replaceable unit 32 or 32′ or 232 is empty and/or needs to be replaced.
In various embodiments, referring to
Similar to the volatile composition container 50 discussed above, in various embodiments, the volatile composition container 250 can comprise a high surface area material, such as a porous material and/or a wick, for example, and a space configured to receive a vapor phase volatile composition therein. In various embodiments, similar to the one or more projections 84 illustrated in
The present disclosure, in part, can comprise a method of dispensing a volatile composition comprising providing a replaceable unit comprising a power source and a volatile composition container comprising a volatile composition. The method can further comprise providing a fan, such as a centrifugal fan, for example, powered by the power source and in fluid communication with the volatile composition container and evaporating a portion of the volatile composition within the volatile composition container. The method can also comprise using the centrifugal fan to intermittently force a volume of air at least partially through the volatile composition container to expel at least most of the evaporated portion of the volatile composition from the volatile composition container. As provided, when the volatile composition and/or the power source has been depleted, the volatile composition and/or the power source can be replaced. In some embodiments, a bundle comprising a volatile composition container containing a volatile composition and a power source is provided. The bundle can be inserted into a shell and attached to the housing and/or a portion of the housing (not illustrated). In some embodiments, a volatile composition and a power source can be provided that each separately can be placed into a shell and attached to the housing or inserted into a portion of the housing (not illustrated). In some embodiments, a shell containing a volatile composition and a power source can be provided to the user that attaches directly to the housing. In some embodiments, a volatile composition and a power source can be provided to the user and placed directly in the housing. In other embodiments, other suitable configurations or implementations can be used.
Although the various volatile composition dispensers disclosed herein have been discussed for use in a vehicle, those of ordinary skill in the art will recognize other uses for the dispensers in other environments. In one non-limiting embodiment, the volatile composition dispensers can be used to dispense insecticide at a camp site and/or within a tent or cabin, for example. In other various embodiments, the volatile composition dispensers can be used in a home, a workplace, a locker, a storage space, and/or any other suitable place or environment where the volatile composition dispenser would have utility to a user.
The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as “40 mm” is intended to mean “about 40 mm”.
All documents cited in the Detailed Description are, in relevant part, incorporated herein by reference; the citation of any document is not to be construed as an admission that it is prior art with respect to the present disclosure. To the extent that any meaning or definition of a term in this written document conflicts with any meaning or definition of the term in a document incorporated by reference, the meaning or definition assigned to the term in this written document shall govern.
While particular embodiments of the present disclosure have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the disclosure. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this disclosure.
| Number | Date | Country | |
|---|---|---|---|
| 61177538 | May 2009 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 12778578 | May 2010 | US |
| Child | 13950491 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 13950491 | Jul 2013 | US |
| Child | 15178581 | US |
