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US 10,914,300 B2Granted
Systems and methods for managing heat transfer in a pressure washer
AssigneeKärcher North America, Inc.
InventorsHector Valdez Jaramillo, Eric L. Shark, Adam Bearup
Life of this patent
Estimating the term…
Abstract
A pressure washing device is provided with a bypass mode. The device comprises a bypass mode and bypass structure that is in fluid communication with a fluid tank for at least one of storing and cooling a fluid that has been heated to unacceptable levels. The present disclosure further provides various devices and features for managing and mitigating heating and over-heating of fluids and components in communication with the fluids.
Claims18
A pressure washing device comprising:
- a lower frame member with a handle extending therefrom;
- a fluid flow path comprising a pump, an unloader valve, a bypass conduit and a second valve comprising a bypass valve;
- the pump comprising an inlet operable to connect to a water supply;
- the pump comprising an outlet operable to connect to a spray gun;
- the bypass conduit connecting the second valve and the inlet of the pump;
- wherein in a first condition of use, fluid is capable of exiting the outlet of the pump, and in a second condition of use fluid is directed to the pump inlet via the bypass conduit;
- a foot pedal having a user-interface and wherein the foot pedal is operable to selectively open the second valve and wherein the foot pedal is operable to relieve or divert pressure in the fluid flow path by opening the second valve.
4 more elements
A pressure washing device comprising:
- a fluid flow path comprising a pump with a high pressure outlet and a low pressure inlet, and wherein the fluid flow path comprises a first valve, a second valve, and a bypass line;
- a foot pedal provided in communication with the second valve and operable to selectively divert, at least one of fluid and pressure to the bypass line by opening the second valve;
- the low pressure inlet having a first end operable to connect to a water supply and a second end associated with the pump;
- the high pressure outlet having a first end operable to be associated with the pump and a second end operable to connect to a spray gun;
- the second valve comprising a bypass valve in fluid communication with the pump outlet;
- wherein the bypass line connects the second valve and the pump inlet;
- wherein in a first condition of use, fluid is capable of exiting the second end of the high pressure outlet, and in a second condition of use, fluid is not capable of exiting the second end of the high pressure outlet;
- and
- wherein in the second condition of use, fluid is capable of being directed from the bypass valve through the bypass line and into the pump inlet.
6 more elements
A pressure washing device comprising:
- a lower frame member and a handle extending therefrom;
- a pump supported on the lower frame member;
- a pump inlet operable to connect to a water supply and provide fluid to the pump;
- a pump outlet operable to expel fluid;
- a bypass valve in fluid communication with at least one of the pump and the pump outlet;
- a bypass circuit operable to recirculate a fluid from the pump outlet to the pump inlet;
- and
- wherein the bypass valve is actuated by a foot pedal provided on the lower frame member to selectively relieve a pressure within the pump to facilitate a starting operation of the device.
5 more elements
Dependencies are inferred from the claim text.