Air-conditioning system and control method of air-conditioning system

Abstract

The invention discloses an air-conditioning system and a control method of the air-conditioning system. The air-conditioning system comprises an enhanced vapor injection compressor, a first commutating assembly, a second commutating assembly, two heat exchangers and a flash evaporator, wherein the enhanced vapor injection compressor is provided with an exhaust hole, an air supplementing hole, a first air suction hole, a second air suction hole and an air returning hole; the pressure of a slide sheet cavity of an air cylinder corresponding to the second air suction hole is the same as exhausting pressure of the exhaust hole; a first pipe opening of the first commutating assembly is connected with the second air suction hole; a second pipe opening is connected with the exhaust hole; a third pipe opening is connected with a liquid storage device; one of the first pipe opening, the second pipe opening and the third pipe opening is communicated; and a control valve is connected between a gas outlet of the flash evaporator and the air supplementing hole in series. According to the air-conditioning system disclosed by the invention, a double-rotor mode is utilized when high-temperature refrigeration and low-temperature heating need great energy output; and a single-rotor mode is utilized when low-temperature refrigeration and high-temperature heating are carried out.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to an air-conditioning system and a control method for the air-conditioning system. Background technique [0002] With the development of society and the popularization of frequency conversion household air conditioners, people have higher requirements for household air conditioners, such as the ability to quickly adjust the room temperature, energy saving, strong cooling at high temperatures, and strong heating at low temperatures etc. However, ordinary inverter air conditioners mostly use single-rotor compressors due to cost reasons. Due to the one-way force of the rotor, the vibration and noise are relatively large, especially at low frequencies, which has a great impact on the reliability of the whole machine. At the same time, it is affected by noise. Limitation, the maximum operating frequency of the air conditioner should not be too high, so that the capacity...

AI Technical Summary

Problems solved by technology

However, ordinary inverter air conditioners mostly use single-rotor compressors due to cost reasons. Due to the unidirectional force on the rotor, the vibration and noise are relatively large, especially at low frequencies. The vibration is too large, which has a great impact on the reliability of the whole machine. Limitation, the maximum operating frequency of the air conditioner should not be too high, so that the capacity of the air conditioner cannot reach the maximum; if an ordinary dual-rotor compressor is used, due to the increase in the leakage of the cylinder, the performance system of the whole machine is poor, which is not conducive to energy saving; Another common dual-rotor dual-mode compressor can solve some of the above problems, but when the ultra-high temperature refrigeration and ultra-low temperature heating, due to the increase of the compression ratio of the compressor, the system performance drops sharply

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