Pulse controlled expansion valve and method

Details Pulse controlled expansion valve and method Pulse controlled expansion valve and method

1982-11-01

1984-07-17

Makay, Albert J.

Refrigeration

Automatic control

Refrigeration producer

62225, 62511, 251141, F25B 4104, F25B 4106, F16K 3102

Patent

active

044598190

ABSTRACT:
A pulse controlled refrigeration expansion valve and method of controlling the valve is disclosed. The valve is preferably an on/off (open/closed) direct controlled solenoid valve. The valve is periodically energized (opened) and de-energized (closed) in response to a refrigeration system parameter (e.g., superheat) such that the ratio of energization time/de-energization time during each period of operation of the valve is varied in response to the system parameter(s) and such that the on/off solenoid valve functions as a modulated refrigerant flow control expansion valve.

REFERENCES:
patent: 2828936 (1958-04-01), Hales
patent: 3537272 (1970-11-01), Hales et al.
patent: 3659631 (1972-05-01), Rakoske
patent: 3677028 (1972-07-01), Raymond
patent: 3778025 (1973-12-01), Lane et al.
patent: 4067203 (1978-01-01), Behr
patent: 4112703 (1978-09-01), Kountz

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