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Chemical Tank Filling Systems for Pressure Washers

IP.com Disclosure Number: IPCOM000236056D
Publication Date: 2014-Apr-03
Document File: 9 page(s) / 684K

Publishing Venue

The IP.com Prior Art Database

Abstract

A chemical tank filling system for a pressure washer or similar device includes a chemical tank, a first conduit that fluidly couples the chemical tank to the water input of the pressure washer and a second conduit that fluidly couples the chemical tank to the water output of the pressure washer. One or more control valves allow the system to be operated so that water bypasses the input to the pressure washer to fill the chemical tank and dissolve a chemical concentrate contained therein. The one or more control valves also allow the dissolved chemical solution to flow to the water output of the pressure washer. Another chemical tank filling system includes a one-way valve with a valve set disrupter located at chemical injection of the water output of the pressure washer. The one-way valve is fluidly coupled to the chemical tank and functions to prevent high pressure water from passing through the valve during high pressure operation, allow chemical solution to be added to the water output during low pressure operation, and allow the user to disrupt the valve set when the pressure washer is not operating to provide water to the chemical tank.

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      CHEMICAL TANK FILLING SYSTEMS FOR PRESSURE WASHERS ABSTRACT


[0001]A chemical tank filling system for a pressure washer or similar device includes a chemical tank, a first conduit that fluidly couples the chemical tank to the water input of the pressure washer and a second conduit that fluidly couples the chemical tank to the water output of the pressure washer. One or more control valves allow the system to be operated so that water bypasses the input to the pressure washer to fill the chemical tank and dissolve a chemical concentrate contained therein. The one or more control valves also allow the dissolved chemical solution to flow to the water output of the pressure washer. Another chemical tank filling system includes a one-way valve with a valve set disrupter located at chemical injection of the water output of the pressure washer. The one-way valve is fluidly coupled to the chemical tank and functions to prevent high pressure water from passing through the valve during high pressure operation, allow chemical solution to be added to the water output during low pressure operation, and allow the user to disrupt the valve set when the pressure washer is not operating to provide water to the chemical tank.

BACKGROUND OF THE INVENTION


[0002]The present invention relates to a water filling system for a chemical tank located on a pressure washer or other similar device.


[0003]Both internal combustion engine-driven and electric motor-driven pressure washers are used for a variety of cleaning operations in residential and commercial capacities. The high-pressure spray emitted by these pressure washers enables faster and more thorough cleaning as compared to using a conventional garden hose.


[0004]In addition to using a high-pressure water spray, the addition of detergent or other chemicals into the spray is often desired for certain cleaning tasks. Generally, a liquid detergent or chemical is introduced into the spray at or near the outlet of the high-pressure pump or the spray gun of the pressure washer. Through a venturi effect, the liquid detergent or chemical is drawn into the spray at certain pressure and flow rates. The detergent or chemical is usually in liquid form, with the user refilling a chemical tank on or near the pressure washer as needed. Alternatively, the detergent or chemical could be in a concentrated solid (e.g., puck or packet) form or concentrated liquid form, with the user adding both the concentrated chemical and water to the chemical tank. This concentrated form is easier for a manufacturer to package and easier for a consumer to transport and store, but requires the additional step of manually adding water to the chemical tank to create the appropriate detergent or chemical mixture. The manual addition of water can be cumbersome and require the user to either remove the chemical tank for filling or bring a dedicated water source (e.g., garden hose) to the tank.

4828-8960-3097.1


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[0005]Accor...