Air conditioner system, control method thereof and air conditioner

Abstract

The invention provides an air conditioner system, a control method thereof and an air conditioner. The air conditioner system comprises a compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger, a flash evaporator, a first electronic expansion valve, a second electronic expansion valve and connecting pipes which are connected in sequence. The first electronic expansion valve is arranged between the outdoor heat exchanger and the flash evaporator. The second electronic expansion valve is arranged between the indoor heat exchanger and the flash evaporator. An exhaust temperature sensor is arranged between the compressor and the four-way valve. A flash evaporation temperature sensor is arranged on the flash evaporator or the pipe connected with the flash evaporator.The controller is connected with the exhaust temperature sensor, the flash evaporation temperature sensor, the first electronic expansion valve and the second electronic expansion valve. Through the air conditioner system provided by the invention, under different working conditions, by controlling the opening degrees of the two electronic expansion valves, the throttling conditions of coolants inpipes on the condensation side and the evaporation side of the air conditioner are adjusted, and then the air conditioner system can operate under the optimal conditions.

Description

technical field [0001] The present invention relates to the field of air conditioning systems, and in particular, to an air conditioning system, a control method of the air conditioning system, and an air conditioner. Background technique [0002] At present, in related technologies, such as two-stage compression, independent compression, quasi-two-stage compression and other refrigeration systems, flashers are used to separate enthalpy-increasing gases in small refrigeration devices, and there are throttling devices before and after the flasher. convenient, as figure 1 As shown, an electronic expansion valve 4' is arranged between the flasher 6' and the condenser 8', and a capillary 2' is arranged between the flasher 6' and the evaporator 10'; figure 2 As shown, a capillary 2' is arranged between the flasher 6' and the condenser 8', and an electronic expansion valve 4' is arranged between the flasher 6' and the evaporator 10'; the disadvantage is that the capillary can on...

AI Technical Summary

Problems solved by technology

[0002] At present, in related technologies, such as refrigeration systems such as two-stage compression, independent compression, and quasi-two-stage compression, a flasher is used to separate the enthalpy-increasing gas in a small refrigeration device. There are throttling devices before and after the flasher. Convenient, such as figure 1 Shown, be provided with electronic expansion valve 4 ' between flasher 6 ' and condenser 8 ', be provided with capillary 2 ' between flasher 6 ' and evaporator 10 '; figure 2 As shown, a capillary 2' is set between the flasher 6' and the condenser 8', and an electronic expansion valve 4' is set between the flasher 6' and the evaporator 10'; the disadvantage is that the capillary can only It is optimized for a certain working condition, but cannot be optimized for other operating conditions. For example, when heating, if the rated heating condition is optimized with a capillary tube, then the low temperature condition is not optimal, and the more the temperature deviates from the rated heating condition , the farther away from the optimal point

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