Air conditioner for implementing high and low pressure side pressure balancing

Abstract

The present invention discloses an air conditioner for achieving pressure balance between high pressure side and low pressure side; a connecting pipeline is arranged between the high pressure side and the low pressure side of the air conditioning system through a valve to control on-off; the valve is closed when the air conditioner is in normal operation; when the pressures in the high pressure side and the low pressure side are needed to balance, the valve is opened. Optimizedly, the connecting pipeline is connected between an air outlet of a condenser and an air outlet of an evaporator. Optimizedly, the valve is two electromagnetic valves in series connection along the opposite direction. Optimizedly, an oil extractor is arranged on the pipeline of the air outlet of the evaporator; the connecting pipeline is connected with an outlet pipe of the evaporator through the oil extractor which is connected to an air inlet of a compressor through an oil return capillary tube. In the present invention, the pipeline is arranged between the high pressure side and the low pressure side of the air conditioning system through the electromagnetic valves to control and conduct in order that the pressures of the high pressure side and the low pressure side of the compressor are balanced rapidly and the compressor can not be started in the state of imbalance between the pressures of the high pressure side and the low pressure side. The optimal implementing proposal of the present invention also uses the pipeline to achieve the forcible oil return.

Description

technical field [0001] The invention relates to air-conditioning technology, in particular to an air-conditioner for realizing pressure balance of high and low pressure sides. Background technique [0002] When the compressor starts to run, it is necessary to balance the pressure on both sides of the air inlet (low pressure side) and the air outlet (high pressure side), otherwise it will cause difficulty in starting. If the air conditioning system is in the working state of frequent start and stop, it is possible that the high and low side pressures are seriously unbalanced, and the compressor gets a start command. Therefore, in the prior art, the air-conditioning system generally waits for 3 minutes before starting the compressor after receiving the start signal. The above-mentioned 3-minute waiting time is used to wait for the pressure balance of the high and low pressure sides of the air-conditioning system. [0003] Despite the above measures, due to the existence of th...

AI Technical Summary

Problems solved by technology

This situation will not only affect the normal circulation of the refrigerant in the air conditioning system, but also cause the lubricating oil in the compressor to decrease continuously. In severe cases, the compressor will burn out due to too little lubricating oil.

Images