Pumps – Condition responsive control of pump drive motor – Responsive to accumulation of pumped liquid in receiver
Patent
1991-05-20
1992-12-08
Walton, George L.
Pumps
Condition responsive control of pump drive motor
Responsive to accumulation of pumped liquid in receiver
122 131, 126362, 137444, 137446, 13762566, 222 67, 222249, 417393, 417397, F16K 2118, F16K 3122, F16K 3300
Patent
active
051692910
ABSTRACT:
A water heater (10) has a pressure-transfer module (20) interposed between an external pressurized-water circuit and the water inside the water-heater vessel (12) so that the water is at atmospheric pressure and can thus have a free upper surface. A shut-off valve in the inlet (14) to the pressure-transfer module (20) is controlled in accordance with the water level as detected by a float (74). If the water level falls below a predetermined minimum or exceeds a predetermined maximum, the shut-off valve closes so as to prevent further flow into the water heater (10) from the upstream side of the exterior circuit.
REFERENCES:
patent: 1114019 (1914-10-01), Morris
patent: 1114575 (1914-10-01), Blanchard
patent: 1427793 (1922-09-01), Emerson
patent: 1787601 (1931-01-01), Swanberg
patent: 2814305 (1957-11-01), Sturman
patent: 3756269 (1973-09-01), Brown
patent: 4064907 (1977-12-01), Billington et al.
patent: 4378784 (1983-04-01), Frank
patent: 4437484 (1984-03-01), Laing et al.
patent: 4541464 (1985-09-01), Christiansen
patent: 4658760 (1987-04-01), Zebuhr
patent: 4867654 (1989-09-01), Zebuhr
patent: 5007450 (1991-04-01), Babb et al.
Vaughn Thermal Corporation
Walton George L.
LandOfFree
Water heater with shut-off valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Water heater with shut-off valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water heater with shut-off valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-957419