HVAC system shutdown sequence

Details HVAC system shutdown sequence HVAC system shutdown sequence

2005-01-04

2005-01-04

Norman, Marc (Department: 3744)

Refrigeration

Automatic control

Time or program actuator

C062S149000, C062S174000

Reexamination Certificate

active

06837061

ABSTRACT:
A first solenoid-operated, discharge-line control valve (26) is moved between open and closed positions to control fluid flow in the discharge fluid line (18) between the compressor (12) and the condenser (14). A second solenoid-operated, liquid-line control valve (28) is moved between open and closed positions to control fluid flow in the liquid fluid line (20) between the condenser (14) and the evaporator (16). A controller (36) closes one of the flow control valves (26, 28) a period of time before closing the other flow control valve (26, 28) and shuts down the compressor (12) sequentially with the flow control valves (26, 28).

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patent: 5946939 (1999-09-01), Matsushima et al.
patent: 6397613 (2002-06-01), Izawa et al.
patent: 6505478 (2003-01-01), Cousineau et al.
patent: 0768198 (1997-04-01), None
patent: 0788909 (1997-08-01), None
patent: 0842799 (1998-05-01), None
patent: 0872693 (1998-10-01), None

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