The present disclosure is generally related to mixing chambers and more particularly is related to a fogging apparatus having a low CFM DC-powered blower motor and a mixing chamber for ultra-low volume atomized fog.
A fogger is a device that creates a fog or mist or small particulate size typically converted from a fluid, such as an insecticide for killing insects and other biological material. Foggers are often used by consumers and professional pest control services, but may also be used for other purposes, such as sanitization. Within the industry, there are two main choices for fogging tools: (1) a thermal fogger; and (2) an electric-corded fogger. Both of these foggers have significant drawbacks.
The thermal fogger uses heat to create a fog with small particle sizes—often too small—and do not actively stick to the insect target, but deter them. The insect will fly away upon application of the fog and return when the fog clears out. Additionally, the thermal fog clouds produced can remain suspended within the air and travel to areas which were not intended to receive treatment, such as neighboring yards, water areas and other non-targeted areas. Beyond producing a small particle size, thermal foggers present many problems with their use. They require a liquid or gas fuel source, commonly propane, which can be dangerous in many settings, such as around open flames. Thermal foggers also create significant amounts of heat which can cause burning injuries to the operator. Additionally, thermal foggers are cumbersome and difficult to use in confined areas, such as attics.
Electric-corded foggers do not use heat and produce a cold fog, which is comprised of droplet sizes averaging fewer than 25 microns. This size is the optimal size for killing the targeted insect or microorganisms. However, electric-corded foggers are limited to only AC power and therefore, they are limited to the being used only where an AC power cord can reach. Conventional electric-corded AC foggers operate by siphoning from a liquid tank to a small orifice jet to create the atomized fog. They use high cubic foot per minute (CFM) volume generation, commonly above 120 CFM. They also have high air speeds generated by the AC blow motor to produce high pressure air which is channeled through a vortex or turbine. As the high pressured air passes the liquid jet, the air siphons the liquid from the tank and creates atomized particles. These conditions cannot be achieved with cordless foggers. Using battery-powered DC motors with these conventional electric-corded foggers cannot produce a high enough CFM or air flow to achieve the desired particulate size of at or under 25 microns.
Thus, a heretofore unaddressed need exists in the industry to address the aforementioned deficiencies and inadequacies.
Embodiments of the present disclosure provide a fogger apparatus and related methods. Briefly described, in architecture, one embodiment of the apparatus, among others, can be implemented as follows. A fogger apparatus has a portable fogger body. A DC blower motor is positioned on the portable fogger body and powered with at least one battery, wherein the DC blower motor produces an air flow through at least one passageway within the portable fogger body. A quantity of fogging liquid is housed within a container fluidly connected to the portable fogger body, wherein at least a portion of the quantity of fogging liquid is dispensable from the container. An activation switch controls at least one of activation of the DC blower motor and dispensing of the portion of the quantity of fogging liquid. A mixing chamber receives the air flow and the dispensed portion of the quantity of fogging liquid, wherein the dispensed portion of the quantity of fogging liquid is expelled through a nozzle as a particulate having a size less than 25 microns.
The present disclosure can also be viewed as providing methods of generating a low-CFM fog with a portable, battery-powered fogging apparatus. In this regard, one embodiment of such a method, among others, can be broadly summarized by the following steps: initiating an airflow through at least one passageway of the portable, battery-powered fogging apparatus with a DC powered blower motor receiving power from at least one battery; expelling a quantity of fogging liquid from a non-pressurized container; expelling the quantity of fogging liquid through a nozzle positioned proximate to an opening within a mixing chamber, wherein the quantity of fogging liquid exits the nozzle at an atomized micron particulate size between 5 and 60 microns; and atomizing the expelled quantity of fogging liquid with the airflow to produce a fog at 190 CFM and at a velocity of less than 190 MPH.
The present disclosure can also be viewed as providing a fogger apparatus. Briefly described, in architecture, one embodiment of the apparatus, among others, can be implemented as follows. The fogger apparatus has a portable fogger body. A DC blower motor is positioned on the portable fogger body and powered with at least one battery, wherein the DC blower motor produces an air flow through at least one passageway within the portable fogger body. A quantity of fogging liquid is housed within a container fluidly connected to the portable fogger body, wherein at least a portion of the quantity of fogging liquid is dispensable from the container using gravity. A first activation switch controls activation of the DC blower motor. A second activation switch controls a pump positioned inline with fluid tubes connected to the container, wherein the second activation switch controls dispensing of a portion of the quantity of fogging liquid from the container. A mixing chamber receives the air flow and the dispensed portion of the quantity of fogging liquid, wherein the dispensed portion of the quantity of fogging liquid is expelled through a nozzle as a particulate having a size less than 25 microns.
Other systems, methods, features, and advantages of the present disclosure will be or become apparent to one with skill in the art upon examination of the following drawings and detailed description. It is intended that all such additional systems, methods, features, and advantages be included within this description, be within the scope of the present disclosure, and be protected by the accompanying claims.
Many aspects of the disclosure can be better understood with reference to the following drawings. The components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
The apparatus 10 is a fogging unit which does not rely on an electric power cord or gas/propane to operate. Rather, the apparatus utilizes a battery 40 to power a DC blower motor 30 to create a fog and/or mist to combat insects and other biological material. As discussed in the Background, conventional foggers use either heat or a corded-electric AC motor to create fog. The apparatus 10 is portable in that it is capable of being transported relatively easily without connection to a power source, such as an electric cord. The apparatus 10 may be used within any industry or market, including those directed to pest control, bio control, microbial, medical, or other industries.
The portable fogger body 20 may be a structure that houses the various components of the apparatus 10. The portable fogger body 20 may be constructed from plastics, metals, or another material. When coupled with the DC blower motor 30, positioned on the portable fogger body 20, and powered with one or more batteries 40, the apparatus 10 is fully portable and can be moved into a variety of locations and settings, irrespective of corded-power accessibility. As is shown in
The DC blower motor 30 operates with only direct-current (DC) power, and does not use alternating-current (AC) power. The battery 40 provides the DC power source to the DC blower motor 30, thereby allowing the DC blower motor 30 to produce air flow. The battery 40 may include a 6 volt to 90 volt DC battery. The air flow may traverse through one or more passageways within the portable fogger body 20, such as a passageway that connects the DC blower motor 30 with the mixing chamber 70. In
A quantity of fogging liquid 50 is housed within a container 52 positioned on the portable fogger body 20. The fogging liquid 50 may be any type of liquid used with fogging, such as hydrogen peroxide, or other commonly-used chemicals. The container 52 may be positioned on the portable fogger body 20 such that it is retained to the body 20 with a retaining mechanism 54. In other embodiments, it is possible for the container 52 to be positioned remote from the portable fogger body 20, such as on the back of the user of the apparatus 10. All positions of the container 52 relative to the portable fogger body 20 are considered within the scope of the present disclosure. The container 52 may be connected to the portable fogger body 20 or other components with a plurality of tubes 56 which can carrying the dispensed portion of the fogging liquid 50. As is shown in
An activation switch 60 controls activation of the DC blower motor 30 and/or dispensing of the portion of the quantity of fogging liquid 50. The activation switch 60 may include one or more switches, operated concurrently or independently. For example, as is shown in
A mixing chamber 70 may be positioned at an end of the portable fogger body 20. The mixing chamber 70, described further in detail relative to
The nozzle 80 may be positioned a specific distance away from the opening 74 to provide optimal spray of the dispensed portion of the fogging liquid 50 without subjecting the nozzle 80 to the hazardous of operating the apparatus 10, such as inadvertently contacting the nozzle 80 and damaging it. For example, the nozzle 80 may be positioned one inch or less from the opening 74. The position of the nozzle 80 relative to the opening 74, along with the angle of the nozzle 80 and the pressure or suction created by the mixing chamber upon the dispensed portion of the fogging liquid 50 may provide for optimal throw distances of the fog. For example, the apparatus 10 may achieve initial throw distances of 25 feet or more and subsequent distance due to the continual ejection of the fog.
Relative to
The pressurized fogging liquid 50 when ejected from the apparatus 10 within the nozzle 80 is atomized because the particles are small and manageable, allowing for proper mixing of the dispersed micron droplets when exposed to the passing air from the low CFM DC blower motor 30. This combination results in atomized droplets of the fogging liquid 50 with particle micron sizes suited for either ULV or Mist treatments. A large, fifty thousandths of an inch orifice 86 or greater size may create very large micron(s) sizes which may be suitable for wet application of bio threats, but for flying insects the application of an eleven-thousandths (0.011 inch) sized orifice 86 to a twenty-eight thousandths (0.028 inch) sized orifice 86 is ideal for ULV.
When manual means are used to pressurize the fogging liquid 50, a pressurized bottle or tank may be used as the container 52. When manually activated by priming, pumping, or trigger action, the pumping mechanism will disperse fogging liquid 1-120 PSI into the nozzle 80 of the mixing chamber 70, where the internals of the nozzle 80 break the particle sizes down and ejected particles atomize with the low CFM air produced by the DC blower motor 30.
Flow of the pressurized fogging liquid 50 from the container 52 may be controlled with the activation switch 60, a shut of valve for safety, and/or a liquid trigger through the tube 56. The pressurized fogging liquid 50 may travel within the tube 56 and into the nozzle 80, which is center mounted in the mixing chamber 70. The pressurized fogging liquid 50 dispensed through the nozzle 80 may be broken down by the nozzle 80 as a fan, cone, flat, spray jet, or other shape. With a 10°-85° degree opening and an orifice size smaller than 0.05 inches. As the broken-down liquid particles eject from nozzle 80, they will atomize with the air flow 12 and then exit the opening 74 of the mixing chamber 70. It is noted that if the opening 74 of the mixing chamber 70 is smaller than the mixing chamber 70, the air and fogging liquid 50 will be compressed through the opening 74 and forced to atomize.
In use, the DC-powered blower motor 30, which is powered by a DC battery 40, may be activated via switch 60 to activate the DC blower motor 30. Then, the container 52 may be pumped with the manual pump via the top pump. The pressurized fogging liquid 50 is released from the container 52 and travels through the tubes 56, past a flow control valve (second switch 64), and into the mixing chamber 70. The dispensed portion of the fogging liquid 50 is ejected from the nozzle 80 as small, broken-down particles, which atomize with the forced air prior to exiting the opening 74 of the mixing chamber 70 to create small particle, ultra-low volume fog or mist.
When an automatic liquid pressure system is used, it may be powered by the DC blower motor 30 and/or the battery 40. In this design the DC blower motor 30 may electrically operate an automatic liquid pumping device located in or near the container 52. A tube 56 transports the pressurized source to control the liquid to the nozzle 80, controlled by a shut of valve for safety or a liquid trigger. The pressurized fogging liquid may travel the tube 56 exit the nozzle 80 as described relative to the manual pressurization example. The liquid may also be unpressurized and flow to the mixing chamber via a tube 56, and the liquid is siphoned in to the nozzle 80 in part because of gravity and or a siphoning effect caused by the venturi in the mixing chamber 70. The venturi is the movement of the fluid due to the Venturi effect, which is the reduction in fluid pressure that results when a fluid flows through a constricted section (or choke) of a pipe.
As will be discussed herein, the apparatus 10 may provide significant benefits with fogging or misting insects or other biological material in tight spaces, such as attics, or in remote locations where corded-power is not readily available. Furthermore, the apparatus 10 provides significant benefits over thermal foggers, which have many drawbacks. For one, the apparatus 10 does not require heat or a propane or gas fuel. Secondly, the apparatus 10 will have less of a tendency to contaminate non-intended areas with fog, since it can produce particulate at the optimal size adjustable between ULV micron(s) 20 microns to mist size microns of up to 150 micron(s), whereas thermal foggers produce particulate at smaller sizes which tend to easily spread to non-intended application areas.
Conventional AC corded-power foggers typically produce typically less than 120 CFM and wind speeds of less than 170 MPH. However, this CFM and wind speeds is unable to atomize liquid with the conventional AC corded-power foggers using a vortex and turbine design which requires siphoning of the liquid to disperse the fog. Specifically, low powered CFM blow motors producing less than 170 MPH wind speeds and less than 120 CFMs cannot create the siphoning effect from the low pressure of air passing through the vortex/turbine. If pressurized stream is introduced to the jet while the blow motor is forcing its low air pressure through the channel, the liquid will exit the chamber without being atomized, misted or fogged. The stream, even when introduced at low liquid pressure, will bypass the forced air and simply not atomize unless the design incorporates a tank slightly higher than the nozzle as in our drawing and a mixing nozzle which encompasses a nozzle of the sizes we specified and has the nozzle the correct distance from the mixing chamber orifice to create enough of a venturi to siphon a enough of the solution from the gravity fed tank above the nozzle to allow the liquid to eject and atomize.
Similar to the conventional AC corded-powered blow motors, the DC blower motor 30 described herein also yields low CFM distribution and optimal wind speeds, typically less than 120 CFM and wind speeds of less than 170 MPH. However, the DC blower motor 30 only uses power provided by a battery 40. If a conventional AC blow motor used a battery that was portable, there may be enough energy to last a few minutes at most. In contrast, use of the DC blower motor 30 with the battery 40 can provide energy for a significant time period, commonly 45 minutes or more of operating time. There is a significant need in the industry for a fogger that can produce optimal fogging particulate sizes, operate for more than a trivial time period (under 10 minutes), and be handheld and portable. It should be understood the apparatus will provide even greater performance for units with higher powered CFM and wind speeds over 200 MPH.
The use of the inline pump 262 may allow for the apparatus 210 to operate in all orientations, including orientations where the container 252 is not positioned vertically upright, as shown in
As is shown by block 402, airflow is initiated through at least one passageway of the portable, battery-powered fogging apparatus with a DC powered blower motor receiving power from at least one battery. A quantity of fogging liquid is expelled from a non-pressurized container (block 404). The quantity of fogging liquid is expelled through a nozzle positioned proximate to an opening within a mixing chamber, wherein the quantity of fogging liquid exits the nozzle at an atomized micron particulate size between 5 and 60 microns (block 406). The expelled quantity of fogging liquid is atomized with the airflow to produce a fog at 190 CFM and at a velocity of less than 190 MPH (block 408).
The method may include any additional number of steps or variations thereof, including any of the processes, functions, or structures disclosed within this disclosure. For example, activation of the DC blower motor and/or expelling of the portion of the quantity of fogging liquid may be controlled with at least one activation switch. The nozzle may be positioned a predetermined distance from an opening of the mixing chamber, such as less than one inch from the opening. When the quantity of fogging liquid is atomized with the airflow, it is done without the use of a heat source and solely with the at least one battery.
It should be emphasized that the above-described embodiments of the present disclosure, particularly, any “preferred” embodiments, are merely possible examples of implementations, merely set forth for a clear understanding of the principles of the disclosure. Many variations and modifications may be made to the above-described embodiment(s) of the disclosure without departing substantially from the spirit and principles of the disclosure. All such modifications and variations are intended to be included herein within the scope of this disclosure and the present disclosure and protected by the following claims.
This application is a continuation-in-part, and claims the benefit, of U.S. Provisional Application Ser. No. 62/242,523 filed Oct. 16, 2015 and U.S. patent application Ser. No. 15/234,315 filed Aug. 11, 2016, which is a continuation application of U.S. patent application Ser. No. 14/099,319 filed Dec. 6, 2013, now U.S. Pat. No. 9,414,580, which claims priority to U.S. Provisional Application Ser. No. 61/864,164 filed Aug. 9, 2013, the entire disclosures of which are incorporated herein by reference.
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/US2016/057199 | 10/14/2016 | WO | 00 |
Number | Date | Country | |
---|---|---|---|
62242523 | Oct 2015 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 15234315 | Aug 2016 | US |
Child | 15768801 | US |