Personal Cooling Device
A portable personal cooling device comprises a fan housing, a fan motor within the fan housing, and a fan driven by said fan motor to direct a flow of air in a downstream direction. A nozzle is attached to the cooling device and positioned to direct a liquid emerging therefrom into the flow of air. An electrically driven pump and pump motor is coupled to the fan housing for drawing water from a body of water and conducting the water to the nozzle for dispersment into the air flow. The cooling device further includes a clamp for removably attaching the fan housing to a supporting structure without the need for tools. The pump assembly includes a water inlet line for conducting the water from the body of water to the pump. The water inlet line has an inlet end weighted sufficiently to maintain the inlet end below the surface of the water in the water source, and a quantity of buoyant material spaced from the inlet end to maintain the inlet end a predetermined distance below the surface of the water.
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This invention relates to personal cooling devices, and more specifically to portable personal cooling devices utilizing fans and water mist.
Portable personal cooling devices are known that comprise a fan and nozzle arrangement for entraining water mist into the air flow from the fan to thereby cool an individual more effectively than air-flow alone. For example, hand-held pump-spray bottles with small electrical fans mounted adjacent the spray have been used. However, the volume of the water within the spray bottle is small due to the weight of the water.
There is a need for a portable personal cooling device that can access greater quantities of water, and which are adaptable to the various places that an individual would desire to utilize the device. In addition, there is a need for a portable personal cooling device that can be easily transported, easily set up, and capable of cooling more than a single individual in an adjustably efficient manner.
SUMMARYA portable personal cooling device constructed in accordance with the invention comprises a fan housing, an electrically driven fan motor within the fan housing, and a fan driven by said fan motor to direct a flow of air in a downstream direction. A nozzle is attached to the cooling device and positioned to direct a liquid emerging therefrom into the flow of air. A pump assembly comprising an electrically driven pump and pump motor is coupled to the fan housing for drawing water from a body of water and conducting the water to the nozzle for dispersment into the air flow. The cooling device further includes a clamp for removably attaching the fan housing to a supporting structure without the need for tools.
The pump assembly includes a water inlet line for conducting the water from the body of water to the pump. The water inlet line preferably has an inlet end weighted sufficiently to maintain the inlet end below the surface of the water in the water source, and a quantity of buoyant material spaced from the inlet end to maintain the inlet end a predetermined distance below the surface of the water. The water flows through a mesh, screen or filter upstream from the pump.
As used herein, the term “body of water” refers to a contained body of water regardless of size so long as the body of water is usable as a coolant source in the manner described herein, and to streams, rivers, lakes, and oceans.
Additional details concerning the present invention will be apparent in the following detailed description of the preferred embodiment when read in conjunction with the accompanying drawings.
In the drawing,
Referring initially to
A misting nozzle 18, attached to the cooling device, is positioned to direct a liquid emerging therefrom into the generally downstream flow of air. The nozzle 18 is preferably configured with an external or internal screw thread that enables the nozzle to engage mating threads of a nozzle manifold 18a as the nozzle is screwed into the manifold. The nozzle manifold is preferably formed from a plastic or metal bulkhead mounted to the face of the safety grill. It ports the water from the pump output line 32 (
A pump assembly is coupled to the fan housing and preferably located within the fan housing. The pump assembly (illustrated in Figures and 6) includes an electrically-driven pump 36 and pump motor 36a for drawing water from a body of water via an input line 34 and conducting the water to the nozzle via output line 32 for dispersment into the air flow created by the rotating fan blades.
A clamp 22 is affixed or mechanically coupled to the fan housing 12 for removably attaching the personal cooling device 10 to a supporting structure without the need for tools. While the supporting structure is illustrated in
In
Further, owing to the compact and integrated assembly of components forming the device, an oscillating fan can be used to repeatedly sweep a chosen arc with a flow of misted air that can cool a number of individuals without lingering too long and uncomfortably in any one region. Accordingly, a pump outlet line 32 is preferably affixed to the housing 12 (as at 30) and coupled for fluid communication to the nozzle 18 to deliver water from a pump 36 (
A suitable pump motor and pump is the CPM40 micro pump offered by Ningbo Rhino Pump & Valve Manufacturing Co., Ltd in Ningbo City, Zhejiang Province, China. In the configuration illustrated in
Those of ordinary skill in the art will recognize that other configurations for positioning the pump assembly and, if desirable, preventing or limiting its rotation are possible and within the scope of the invention. For example, the pump motor may be provided with a non-cylindrical housing that, when supported within a non-cylindrical bracket, is inherently or nearly non-rotatable and has a self-limited insertion depth. Alternatively, the pump motor can be affixed to the bracket (or otherwise within the housing) by means of mechanical fasteners such as screws, rivets, Velcro® and the like, or by means of adhesive or glue.
As illustrated in
As illustrated in
The water pumped to the nozzle can be any of a number of sources. For example, the water can be contained within an ice chest and be derived from melting ice therein. Alternatively, the chest itself (including a cooler) can be filled or partially filled with water that is to be pumped to the nozzle, with the device being clamped to a surface or edge of the chest or nearby supporting structure. If used at the beach or lakeside, a barrel or chest can be replenished periodically from the ocean or lake to provide a misting spray from the device, or the inlet line can be immersed on the ocean or lake. The fitting 37 can be provided with a surface that is sized and shaped to provide a secure connection with the drain of a cooler (when the cooler has a drain) so that water draining from the cooler can be conducted to the fan with minimal or no leakage around the fitting. Preferably the fitting is tapered so as to securely accommodate drains of different cross-section. Aboard watercraft or on a pier, the inlet line can be immersed in the water with the float, ensuring that the inlet end is sufficiently submerged to avoid surface contaminants, such as oil, and debris.
Moreover, detachable fittings can be provided for use at the inlet end of the inlet line to enable the substitution of fittings adapted to securely communicate with respective water sources.
The pump is preferably activated and deactivated independently of the fan so that a mist is entrained into the air flow only when desired, and the quantity of available water can be used more efficiently if in limited supply. The pump switch may be electronic or mechanical; if electronically activated, it may be automatically operated intermittingly so as to provide intermittent periods of misting. The switch can also be configured to be activated by a user's hand, foot or any other body part.
Independent activation of the pump and fan can be accomplished by connecting them in parallel to a power source through respective switches, by utilizing a single switch that selectively connects (1) only the fan motor or (2) both the fan motor and pump to a power source, or by selectively coupling/decoupling a drive shaft associated with the pump and the driveshaft of the fan motor via a clutch arrangement. One clutch arrangement is schematically illustrated in
Electric power may be provided to the fan and pump from batteries, solar cells or any other convenient power source (or combination thereof), and a power cord 42 (
The preferred embodiment accordingly provides an easily carried, easily installed and removed, self-contained personal cooling device that is usable on land, in the air and on the water. Those of ordinary skill in the art will recognize that the cooling device can be sized and/or positioned to simultaneously cool more than a single individual, and the term “personal” as used herein should accordingly not be construed to limit the device's application to the cooling of a single individual at a time.
Various modifications and changes may be made to the illustrated structure without departing from the spirit and scope of the invention, which is to be defined by the appended claims.
Claims
1. A portable personal cooling device comprising
- a housing;
- an electrically driven fan motor within the housing, and
- a fan driven by said fan motor to direct a flow of air in a downstream direction;
- a misting nozzle positioned to direct a liquid emerging therefrom into the flow of air;
- a pump assembly comprising an electrically driven pump fixedly coupled to the housing for drawing water from a body of water and conducting the water to the nozzle for dispersment into the air flow; and
- a clamp for removably attaching the housing to a supporting structure without the need for tools.
2. The device of claim 1 wherein the pump assembly includes
- a water inlet line for conducting the water from the body of water to the pump, the water inlet line having an inlet end weighted sufficiently to maintain the inlet end below the surface of the water in the water source, and a quantity of buoyant material spaced from the inlet end to maintain the inlet end a predetermined distance below the surface of the water, and
- a mesh, screen or filter through which the conducted water flows to the pump.
3. The device of claim 2 wherein the water inlet line has a tapered fitting at its inlet end permitting secure connection to the drain of an ice chest or cooler enabling water within the cooler can be pumped to the nozzle.
4. The device of claim 2 wherein the water inlet line includes a detachable fitting at its inlet end that enables substitution of fittings adapted to securely communicate with respective water sources.
5. The device of claim 2 wherein the quantity of buoyant material is movable towards and away from the inlet end to provide the inlet end with a desired immersion depth.
6. The device of claim 1 wherein the pump is driven by the same motor as the fan.
7. The device of claim 1 including a safety grill mounted to the housing downstream of the fan to minimize the risk of injury to a user from the rotating fan blades.
8. The device of claim 7 wherein the misting nozzle attached to the cooling device, is formed from a plastic or metal bulkhead mounted to the face of the safety grill.
9. The device of claim 8 wherein the bulkhead snaps onto the safety grill.
10. The device of claim 8 wherein the safety grill and manifold are a molded plastic part.
11. The device of claim 1 wherein the pump assembly is located within the fan housing.
12. The device of claim 1 wherein the housing is pivotably coupled to the clamp.
13. The device of claim 1 including a pump outlet line affixed to the housing and coupled for fluid communication to the nozzle to deliver water from the pump to the nozzle.
14. The device of claim 1 wherein the fan is an oscillating fan, and the pump, motor, fan and nozzle oscillate as a single unit.
15. The device of claim 14 including a fluid conduit in fluid communication between the pump and nozzle mounted for oscillation with the pump and nozzle.
16. The device of claim 1 including a pump motor in addition to said fan motor for driving the pump.
17. The device of claim 16 wherein the pump motor is carried by the housing.
18. The device of claim 17 wherein the pump motor is positioned within the housing.
19. The device of claim 1 wherein the device is configured so that the pump can be activated and deactivated independently of the fan so that a mist is entrained into the air flow only when desired.
20. The device of claim 19 wherein the pump and the fan are electrically coupled in parallel to a source of electricity through at least one switch.
21. The device of claim 19 including a clutch arrangement for selectively coupling and decoupling the pump to the fan motor.
22. The device of claim 1 including a battery compartment carried by the device for holding a battery,
- connectors carried by the device for electrically coupling the device to the battery so that the device can be operated cordlessly.
23. The device of claim 1 including a rechargeable electrical storage device mounted within the device so that the device can be operated cordlessly.
24. The device of claim 1 wherein the water pump is a vacuum diaphragm pump.
Type: Application
Filed: Aug 8, 2012
Publication Date: Jul 11, 2013
Applicant: (Simi Valley, CA)
Inventors: Mitchell Altman (Woodland Hills, CA), Scott Sharitz (Oxnard, CA)
Application Number: 13/569,396