Compressor with two-stage exhaust function and air conditioning system

Abstract

The invention provides a compressor with a two-stage exhaust function and an air conditioning system. The compressor comprises a low-pressure stage machine body and a high-pressure stage machine body,the low-pressure stage machine body is provided with a low-pressure stage suction port and a low-pressure stage exhaust port, the high-pressure stage machine body is provided with a high-pressure stage suction port, and a communicating pipeline is arranged between the low-pressure stage exhaust port and the high-pressure stage suction port. According to the compressor with the two-stage exhaust function and the air conditioning system, the communicating pipeline is arranged, the problem of high-pressure stage exhaust temperature increase caused by the fact that low-pressure stage discharged gas flows through a motor is avoided, meanwhile gas suction sources of the high-pressure stage machine body can be switched according to the demands, the exhaust pressure of the compressor is adjusted,the states of resource waste such as overcompression caused by rated pressure ratios in the prior art is overcome, at the same time, the exhaust flow under the same exhaust pressure can be increasedwhen the low-pressure stage machine body and the high-pressure stage machine body work simultaneously, the output capacity of the compressor is enhanced, and therefore the application range of the compressor is increased.

Description

technical field [0001] The invention relates to the technical field of compression devices, in particular to a compressor and an air-conditioning system with two-stage exhaust functions. Background technique [0002] The working principle of the existing single-unit two-stage screw compressor is that two pairs of screw rotors are connected in series through a coupling, and the refrigerant enters the low-pressure stage rotor cavity through the compressor suction port to be compressed, and then enters the high-pressure stage rotor cavity through the motor cavity to complete the process. compressed, and finally discharged as ultra-high pressure gas. The main means is to compress low-pressure refrigerant into ultra-high-pressure gas through two-stage compression technology, as shown in the figure. It is often used in ultra-high temperature heat pump and ultra-low temperature refrigeration technology. [0003] When a single-unit two-stage compressor is used in a heat pump unit,...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem of wasting resources caused by the pressure ratio of the two-stage compressor being far greater than the demand, a compressor and an air conditioner with two-stage exhaust function are provided that can switch between single-stage compression and two-stage compression to adjust the final pressure ratio of the compressor. system

Images