Air conditioner and refrigeration control method thereof

Abstract

The invention discloses an air conditioner and a refrigeration control method thereof. The air conditioner comprises an outdoor heat exchanger, a compressor, a first temperature sensor and a control module, wherein an exhaust port of the compressor is connected to the inlet end of the outdoor heat exchanger, the compressor is provided with a cooling device, one end of the cooling device is connected with the outdoor heat exchanger through an electronic expansion valve, and the other end of the cooling device is connected with a suction port of the compressor; the first temperature sensor is used for detecting outdoor environment temperature; the control module is used for controlling the electronic expansion valve to open when the outdoor environment temperature is greater than first preset temperature, so that the compressor can be cooled by the cooling device, and the system pressure of the air conditioner is reduced during operation. The air conditioner can be used for operating and refrigerating at high temperature, and the system operation pressure can be effectively reduced during system overload, so that the air conditioning system can continuously operate, the system reliability is increased, and the user experience is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner and a refrigeration control method thereof. Background technique [0002] At present, air conditioners are being used in ever-expanding regions, covering every corner of the world, and the number of users is expanding day by day. Users have higher and higher expectations for the use of air conditioners. When the cooling mode of traditional air conditioners is used indoors and outdoors, the range of use will be different. For example, the range of indoor use is 17-32°C, and the range of outdoor use is 0-50°C. It can be seen that traditional air conditioners ignore Meet the user's demand for high-temperature refrigeration. [0003] With the increasing influence of the global greenhouse effect, the global temperature is getting higher and higher. In some high-temperature operating areas, such as when the outdoor ambient temperature is in the range of 50°...

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Problems solved by technology

[0003] With the increasing influence of the global greenhouse effect, the global temperature is getting higher and higher. In some high-temperature operating areas, such as when the outdoor ambient temperature is in the range of 50°C to 65°C, people’s demand for high-temperature refrigeration is becoming more and more common. However, traditional When the air conditioner operates under high temperature and overload conditions, the pressure on the high pressure side of the system can easily exceed the operating range of the compressor, which will cause the compressor to trip and stop, the system cannot work normally, the reliability is poor, and the compressor is easily damaged, resulting in poor user experience

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