Patent Application
20210381721
This disclosure relates to air flow devices, and more particularly to an air treatment apparatus having a thermoelectric generator for the controllable dispensing of fragrances, insect repellents, and/or other chemicals into the air.
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
Candles in jars, i.e., containerized candles have been used for many years, primarily for lighting and decoration purposes. More recently, scented container candles in apothecary jars or similarly shaped vessels have become widely used. Many of these containerized candles are sold in standard sizes and shapes and used for dispersing a scent.
There are other known scent dispersers such as wax warmers or scent diffusers, but they require batteries or cords for powering the release of fragrance into the air. Insect repellent candles or electric scent diffusers are disadvantaged in outdoor settings. The candles can unevenly diffuse the scent into the air or be unduly affected by wind or breeze, which can cause uneven burning or flame extinguishment. Electronic diffusers such as personal repellent dispensers or insecticide diffusers, require batteries or power cords for powering the release of chemical repellents into the air, which can be limiting and inefficient.
Therefore, a need exists for an air treatment apparatus having a thermoelectric generator for means of portable scent diffusion.
A venting apparatus for a heat source is disclosed. The venting apparatus includes a venting housing structure comprising a plurality of exhaust apertures proximate to a heat collector, wherein the exhaust apertures vent into a chamber defined, in part, by a circumferential surface having a radial extent from the apertures, and a thermoelectric device in thermal communication to the heat collector on a second surface thereof.
Certain embodiments of the chamber allow exhaust and scent from the candle to selectively and controllably mix with outside air directed from a fan.
Certain embodiments of the chamber mitigate undesirable outside airflow into a combustion chamber of a heat source.
This summary is provided merely to introduce certain concepts and not to identify key or essential features of the claimed subject matter.
One or more embodiments will now be described, by way of example, with reference to the accompanying drawings, in which:
Reference throughout this specification to “one embodiment,” “an embodiment,” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the subject matter of the present disclosure. Appearances of the phrases “in one embodiment,” “in an embodiment,” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.
Various embodiments of the present invention will be described in detail with reference to the drawings, where like reference numerals represent like parts and assemblies throughout the several views. Reference to various embodiments does not limit the scope of the invention, which is limited only by the scope of the claims attached hereto. Additionally, any examples set forth in this specification are not intended to be limiting and merely set forth some of the many possible embodiments for the claimed invention.
As used in the description herein and throughout the claims, the following terms take the meanings explicitly associated herein, unless the context clearly dictates otherwise: the meaning of “a,” “an,” and “the” includes plural reference, the meaning of “in” includes “in” and “on.” The term “based upon” is not exclusive and allows for being based on additional factors not described, unless the context clearly dictates otherwise. Additionally, in the subject description, the word “exemplary” is used to mean serving as an example, instance or illustration. Any embodiment or design described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word exemplary is intended to present concepts in a concrete manner.
Referring to the drawings, wherein the depictions are for the purpose of illustrating certain examples only and not for the purpose of limiting the same,
The air treatment apparatus 10 includes a housing module 20 and a thermoelectric generator module 40, which is shown in
The housing module 20 includes mechanical elements to engage power indicator features of the apparatus 10, such as shown in
The housing structure 21 may provide several functional purposes. One function is to provide air vent openings and structure for attachment of vent coverings, which in turn can be used to mount a thermoelectric generator module 40. Another purpose can be to direct the flow of air through the air treatment apparatus 10. The housing structure 21 can provide a barrier against wind or cross breeze and create a mixing chamber 25 within the structure of the device.
In one embodiment, the mixing chamber 25 is formed between an interior surface 90 of the housing structure 21 and surfaces 91 of the venting structure 60. The mixing chamber 25, is accessible via the apertures 61 and outlet air openings 62 and through the fan blades of a fan 41. Therefore, exhaust and scent from the candle 2 may be mixed with outside air from the fan 41 and/or outside air from the openings 62. In one embodiment, the openings 62 are formed by a series of vent fins, which may be formed in a series each having a circumferential shape and each being a different radial extent from the axle. In one embodiment, the mixing chamber 25, is substantially conically-shaped, less a radial extent from an axle or center, and less a top surface defined by the fan-blades. In one embodiment, the mixing chamber 25 is defined by, in part, a radial extent from the plurality of exhaust apertures a.
In one embodiment, the housing structure 21 may include an attachment for an upper air opening and an attachment for lower air opening such as the venting structure 60. These air openings may include circular shapes or any shape consistent with the overall design (e.g. square or triangular). The exterior of the housing structure 21 may have decorative relief, painted, printed graphics or stylized cutout features.
As shown in
The thermoelectric generator module 40 preferably includes a venting structure 60 that is sized and adapted for engagement to the housing structure 21, and sized for the attachment of the electric motor 42, heat sink 43 and heat collector 45. The housing structure 21 may be generally conically-shaped and can include a plurality of inlet air openings 23. The inlet air openings 23 are generally spaced circumferentially from the central axis of the housing module 20. The housing structure 21 is preferably a single contiguous, integral piece, but may be formed of any number of structures. In one example, the inlet air openings may be formed as part of a separate component that is assembled to the housing structure 21 as part of the housing module 20.
In one embodiment, the venting structure 60 is generally cylindrically-shaped and includes a plurality of exhaust apertures 61 and a plurality of outlet air openings 62. The outlet air openings 62 may be generally spaced circumferentially from the central axis of the venting structure 60. The exhaust apertures 61 may be generally radially aligned about the central axis of the structure 40. The exhaust apertures 61 are formed on the structure to be proximate to a heat collector 45 when the venting structure 60 is assembled as part of the thermoelectric generator module 40. The apertures or air vents are preferably spaced circumferentially or radially in any number so as to provide adequate air flow and for structural integrity purposes of the assembled apparatus 10.
The venting structure 60 is configured to accept the attachment of the electric motor 42 by use of a coupling feature 63. The venting structure 60 is preferably a single contiguous, integral piece, but may be formed of any number of structures. The structure is preferably formed of a non-combustible, low thermally conductive and deformable material such as a heat-resistant polymer or resin.
The thermoelectric generator module 40 is configured to generate electricity from a thermal potential generated from a heat source (e.g. a lit candle). It may communicate mechanical energy to one or more visual indicator elements 22, as desired. The module 40 can include a fan 41, an electric motor 42, a heat sink 43, a thermoelectric device (i.e., a TEG device) 44, a heat collector 45, and a coupling venting structure 60.
The fan 41 is axially connected, or integral with, an axle of the electric motor 42. The fan 41 includes a plurality of blades oriented to either direct air at or draw air away from the heat sink 43, depending on the direction of rotation.
The venting structure 60 includes a coupling feature 63 configured to receive the motor 42 and a cylindrical portion to receive the heat sink 43. Any number of radial spoke structures can provide support to the cylindrical central portion and an outer band that is sized and shaped for engagement to the housing structure 21.
The heat sink 43 is configured to contact the thermoelectric device 44. The thermoelectric device 44 generates electricity when there is a thermal difference between the heat sink 43 and the heat collector 45, the upper side and the bottom side, respectively. The heat sink 43 and the fan 42 are configured to extract, i.e., dissipate, thermal energy from the upper side of the thermoelectric device 44.
The heat collector 45 is configured to contact the thermoelectric device 44 and transmit thermal energy to a bottom side thereof. The heat collector 45 is further configured to engage or rest atop a lip of the candle 2. In one embodiment, the heat collector 45 includes a plurality of engagement stands 46 configured to straddle the lip of the candle 2 or engage a side thereof. The engagement stands 46 are radially aligned with a central axis of the thermoelectric generator module 40.
Components of the thermoelectric generator module 40 may be fastened together by screws, bolts or adhesive. It is important that there is quality contact of either the heat sink 43 to the upper side of the thermoelectric device 44 and by the heat collector 45 on the bottom side of the thermoelectric device 44. The tightness of the arrangement facilitates conductive heat transfer between the components for the desired thermoelectric power generation. In various embodiments, thermal conductivity may be enhanced through use of thermal paste or thermal pads placed between the thermoelectric device 44 and either or both of the heat sink 43 and heat collector 45. In some embodiments, tabs may be used for connections of the various components. The tabs can include a surface that is shaped to mate with one or more surfaces of another component to be positioned adjacent to the surface of the tab. Such surfaces can be used to provide support, force, and/or adjustment to one or more tabs being adjusted by the first and/or second component, among other benefits. The terms upper and bottom are used herein to aid the reader and are not to be viewed as limiting with respect to the present disclosure. Although shown as separate components for ease of illustration, some may be formed as an integral unit.
With specific reference to
As
With specific reference to
In the example of the system 100 shown in
In the example of the system 100 shown in
In use, the air treatment apparatus 10 is placed on a heat source, such as the candle 2 after the wick is lit. The heat collector 45 absorbs thermal energy rising from the flame of the lit candle 2. The thermal energy is transmitted to a bottom side of the thermoelectric device 44, creating a thermal difference between the top and bottom sides, which is converted to electrical energy therein taking advantage of the Seebeck effect. The electricity may be communicated to the control module 66 via electrical wires (not shown). The heat sink 43 dissipates heat to the environment through forced convection aided by the fan 41.
The fan 41 performs two primary functions; active heat dissipation and scent diffusion. The fan 41 provides forced convection air flow through the fins of the heat sink 43 to improve heat dissipation. The fan 41 also provides forced air flow through the housing structure 21 and past the exhaust aperture 61 to improve scent diffusion. Air flow and scent distribution rate increase with the rotational speed of the fan 41, resulting in a larger scent distribution range or area.
The fan 41 is propelled by an electric motor 42 which can be powered with electricity from the thermoelectric device 44 either directly, or through the control module 66. The electric motor 42 and fan 41 preferably have a common rotational axis and common central axis. The fan 41 provides consistent cooling for stable power generation that is not easily affected by fluctuating ambient air temperatures.
The fragrance and exhaust from the candle 2 is first released within the container or the structure of the candle 2; this area is the combustion chamber 47. The combustion chamber 47 is vented by means of the exhaust apertures 61, preferably positioned inset within the housing structure 21, thereby providing resistance to external wind or breeze. The fragrance and exhaust move from the combustion chamber 47 through the exhaust apertures 61 into the mixing chamber 25. The mixing chamber 25 is preferably positioned within the housing structure 21.
Once in the mixing chamber 25 the fragrance and exhaust is then mixed and accelerated by the air flow produced from the fan 41 before passing through the outlet air opening 62 for release into the surrounding environment.
In one example shown in
It is preferable that the air treatment element 24 is easily removable to allow for quick transition between various elements containing different types of active ingredients or the use of successive elements holding the same active ingredient. In one example, a disposable air treatment element 24 may be positioning or attached to the inlet air opening 23. In another example, the air treatment element 24 may be positioning or attached to the outlet air opening 62. Alternatively, the structure of the inlet air opening 23 or outlet air opening 62 upper can be directly coated with the active ingredient for the air treatment.
Active ingredients used in the air treatment element 24 may be selected from a wide variety of formulations, and consist of various insect control materials, deodorizers, fragrances, sanitizers, and disinfectants known to be suitable for use with air dispersion. The chemical treatment can be pure active, or for ease of handling the material can be dissolved in a hydrocarbon or other solvent. One example of an air treatment formulation consists of a hydrocarbon solvent having a high boiling point (as a carrier), one or more active ingredients (e.g., a chemical repellent or insecticide), an antioxidant (for shelf life) and/or a fragrance. The formulation will be adapted for its specific application (e.g., indoor or outdoor use), and may have a variety of different ingredients and compounds.
The active ingredient may be applied to the air treatment element 24 by dripping, spraying, printing, or other conventional delivery of a liquid active ingredient and the ingredient amount can be selected so as to be depleted at the same time as the wax of a small tea light 3.
Alternatively, a container candle provides a large enough amount of wax to be sufficient for delivering the active ingredient from several successive air treatment elements 24. In that case, a usage gauge or cue (e.g., a color changing dye) can be added to the element to visually signal to the user that the air treatment ingredient has been depleted and that the element should be replaced.
While the foregoing disclosure discusses illustrative embodiments, it should be noted that various changes and modifications could be made herein without departing from the scope of the described embodiments as defined by the appended claims. Accordingly, the described embodiments are intended to embrace all such alterations, modifications and variations that fall within scope of the appended claims. Furthermore, although elements of the described embodiments may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated. Additionally, all or a portion of any embodiment may be utilized with all or a portion of any other embodiments, unless stated otherwise.
Benefits, other advantages, and solutions to problems have been described above with regard to specific embodiments of the present invention. However, the benefits, advantages, solutions to problems, and any element(s) that may cause or result in such benefits, advantages, or solutions to become more pronounced are not to be construed as a critical, required, or essential feature or element of any or all the claims. The invention is defined solely by the appended claims including any amendments made during the pendency of this application and all equivalents of those claims as issued.
This application claims the benefit of Provisional Application No. 63/034,858 filed on Jun. 4, 2020 which is hereby incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| 63034858 | Jun 2020 | US |
