Liquid heaters and vaporizers – Automatic control of fluid fuel and water – Once through
Patent
1976-04-27
1977-10-04
Sprague, Kenneth W.
Liquid heaters and vaporizers
Automatic control of fluid fuel and water
Once through
122448B, 122451R, F22D 500, F23N 108
Patent
active
040518140
ABSTRACT:
A pressurized hot fluid washer includes a combination pumping unit driven by a closed hydraulic system which applies driving impulse forces to an interlocked liquid pump member and a fuel pump member. The liquid pump and fuel pump are hydraulically interlocked so that when liquid is not being discharged through the cleaning gun, the fuel will definitely be stopped. A static pressure line senses the pressure downstream of the liquid pump and transmits the pressure to one end of a spring biased by-pass spool valve. At a predetermined liquid pressure, the spool valve will sequentially close a hydraulic conduit first to deactivate the fuel pump and then open a by-pass conduit to deactivate the liquid pump member. Thus, both the fuel pump and the liquid pump will be automatically stopped, for example, when the cleaning gun is not being used. In addition, a differential area piston is provided in the hydraulic system between the by-pass spool valve and the fuel pump. The differential area piston reduces the high pressure required of the water supply to a more suitable pressure for the fuel pump.
REFERENCES:
patent: 2062925 (1936-12-01), Ofeldt
patent: 3485176 (1969-12-01), Telford et al.
Clayton Manufacturing Company
Sprague Kenneth W.
LandOfFree
High pressure washer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High pressure washer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High pressure washer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1770209