Refrigerant system with controlled refrigerant charge amount

Refrigeration – Automatic control – Withdrawing or adding refrigerant from or to normally closed...

Reexamination Certificate

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C062S174000, C062S292000

Reexamination Certificate

active

07010927

ABSTRACT:
An air conditioning system includes a supplemental storage container that allows for transferring refrigerant into or out of an air conditioning or refrigeration system based upon different operating conditions. In one example, a controller controls the operation of valves that selectively couple the storage container to the high pressure side or the low pressure side of the system. Depending on operating conditions, when it is desirable to increase an amount of refrigerant in the system, refrigerant is transferred from the storage container to the low pressure side of the air conditioning or refrigeration system. Under conditions where the amount of refrigerant in the system is above a desired amount, refrigerant can be transferred from the high side of air conditioning system to the storage container to bring the pressure within the system closer to the desired level.

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patent: 6539735 (2003-04-01), Schmidt
Systems & Advanced Technologies Engineering S.r.I., publication entitled “COMPSYS—Dynamic Simulation of Gas Compression Plants”.
Copeland Application Guideline for Refrigeration Scroll for Parallel Applications.

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