Refrigeration apparatus

Details Refrigeration apparatus Refrigeration apparatus

2005-01-25

2005-01-25

Jones, Melvin (Department: 3744)

Refrigeration

Automatic control

Withdrawing or adding refrigerant from or to normally closed...

C062S292000

Reexamination Certificate

active

06845626

ABSTRACT:
This invention makes it possible to charge a refrigeration apparatus with the amount of refrigerant that the refrigeration apparatus requires at the time of onsite installation. As a result, the optimum refrigerant charging amount can always be obtained. The refrigeration apparatus is provided with a refrigeration cycle in which an outdoor unit equipped with a compressor, a condenser, and a receiver is connected to an indoor unit equipped with an expansion valve and an evaporator via a liquid pipe and a gas pipe. The refrigeration cycle is charged with refrigerant while a refrigerant charging operation state is created in which the liquid pipe that connects the outdoor unit to the indoor unit is filled with liquid refrigerant having a prescribed density. Refrigerant charging ends when, during the refrigerant charging operation, it is detected that the level of the liquid inside the receiver has reached a prescribed level.

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