Pumps – Condition responsive control of pump drive motor – By control of electric or magnetic drive motor
Patent
1988-02-11
1989-03-28
Croyle, Carlton R.
Pumps
Condition responsive control of pump drive motor
By control of electric or magnetic drive motor
417 53, 62340, F04B 4908
Patent
active
048159417
ABSTRACT:
An automatic water delivery system for transferring water from a storage container to an ice maker. A pump is connected to be driven by an electric motor. The suction of the pump is connected to a container, and the outlet of the pump is connected to the ice maker control valve. When the pump is actuated, water is forced to flow from the container to the ice maker on demand. The discharge from the pump is connected to a high pressure normally closed switch and a low pressure normally opened switch. The switchs are each connected by circuitry to energize the motor whenever the pressure at the pump discharge is within the predetermined range of pressure. An air exhaust valve for exhausting compressible fluid from the interior of the pump and away from the pump discharge is included in the system. This novel arrangement permits flow of water from the pump discharge to proceed directly to the icemaker, and, whenever air is present in the chamber, air is forced to exit the system. Therefore, air which enters the system is removed through the valve device while water forces the valve element into seated relationship. Hence, very little water is exhausted from the system. Accordingly, when full bottles of water are substituted for the empty water bottles, air is ingested into the various water conduits, and the air will thereafter be forced by the pump to move into the valve chamber, where the air then flows past the valve element, and is discharged to ambient.
REFERENCES:
patent: 2826043 (1958-03-01), Simonson
patent: 3969909 (1976-07-01), Barto et al.
patent: 4507054 (1985-03-01), Schoenmeyr
Bates Marcus L.
Croyle Carlton R.
Scheuermann David W.
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