Air-conditioning system and method for judging whether refrigerant perfused amount is proper

An air-conditioning system and refrigerant technology, which is applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problem of inability to judge whether the subcoolant is suitable, achieve the effect of improving operating efficiency and operating life, and ensuring the effect of use

Inactive Publication Date: 2010-09-22
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology

[0004] The present invention aims to provide an air-conditioning system with a subcooler and a method for judging whether the amount o

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  • Air-conditioning system and method for judging whether refrigerant perfused amount is proper
  • Air-conditioning system and method for judging whether refrigerant perfused amount is proper

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Embodiment Construction

[0019] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0020] refer to figure 1 Shown is the schematic diagram of the air conditioning system with subcooler of the present invention, it can be seen that the air conditioning system with subcooler of the present invention includes: an indoor unit and an outdoor unit, and the outdoor unit includes a compressor 1 and a vapor-liquid separator 9 , an outdoor heat exchanger 4, and a subcooler, wherein the compressor 1 is selectively communicated with the indoor unit (not shown) and the outdoor heat exchanger 4 through a four-way valve 3, and the subcooler includes a subcooler liquid pipe 7 and the subcooler air pipe 6 that passes through the subcooler liquid pipe 7, the subcooler air pipe 6 is arranged between the outdoor heat exchanger 4 and the low-pressure side pipeline of the compressor 1, and the subcooler liquid pipe 7 is arranged on Bet...

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Abstract

The invention provides an air-conditioning system with a subcooler, a temperature sensor is arranged on a pipeline between a subcooler liquid pipe and an indoor unit, a pressure sensor is arranged at the exhaust port of a compressor, and the temperature sensor and the pressure sensor are connected on a master controller. The invention also provides a method for judging whether the refrigerant perfused amount in the air-conditioning system with the subcooler is proper, comprising the following steps: calculating the difference between the high voltage condensation temperature of refrigerant at the exhaust port of the compressor and the temperature of the refrigerant at the liquid outlet of a high voltage side of the subcooler, namely obtaining an actual subcooling degree; and comparing the difference of the actual subcooling degree and a target subcooling degree with a judgment value, and judging whether the refrigerant perfused amount is proper according to the comparing result. The invention overcomes the problem that the refrigerant perfused amount can not be judged in the existing air-conditioning system with a subcooler, can ensure circulated operation of the air conditioning system with a proper refrigerant, improves the operation efficiency and service life of a unit and ensures the use effect for users.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to an air conditioning system with a subcooler and a method for judging whether the amount of refrigerant injected therein is appropriate. Background technique [0002] In an air-conditioning system with a subcooler, whether the filling amount of the refrigerant is appropriate plays a key role in the performance of the air-conditioning system. If the refrigerant is insufficient, it will lead to a lack of fluorine during the operation of the entire system, which will affect the operating performance of the unit. The operating life of the unit is reduced, and the user's use effect is poor. If there is too much refrigerant in the system, the throttled refrigerant will not evaporate completely, which will easily cause the liquid refrigerant to return to the compressor, affecting the operating performance of the compressor. [0003] In the process of realizing the present invention, the ...

Claims

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Application Information

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IPC IPC(8): F25B5/02F25B40/02F25B41/06F25B45/00F25B49/02
Inventor 张龙刘煜宋培刚黄春肖翰生
Owner GREE ELECTRIC APPLIANCES INC
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