Railway vehicle carbon dioxide air conditioner safety valve and air conditioner system

Abstract

The invention discloses a railway vehicle carbon dioxide air conditioner safety valve and an air conditioner system. The safety valve comprises a valve body, a locking assembly and a first pressure relief assembly, wherein a first channel is formed in the valve body, an air inlet connector and a first outlet are formed in the side face of the first channel, the first pressure relief assembly comprises a first valve element and a first pressure relief spring, the two ends of the first pressure relief spring abut against the valve body and a first valve element, the locking assembly is arrangedin the valve body and comprises a locking block and an electromagnet, the electromagnet is fixedly connected with the valve body, the locking block can be attracted by the electromagnet to move, a fixing protrusion is arranged on the locking block, the fixing protrusion can limit the first valve element, so that the first valve element blocks communication between the air inlet connector and the first outlet, and when the electromagnet is powered on, the electromagnet attracts the locking block, so that the fixing protrusion cancels limiting of the first valve element. According to the safetyvalve and the air conditioner system, the traditional passive pressure relief function is reserved, the safety valve can be actively opened according to the CO2 concentration, and refrigerant CO2 leakage is prevented.

Description

technical field [0001] The invention belongs to the field of safety valves, and in particular relates to a carbon dioxide air-conditioning safety valve for rail vehicles and an air-conditioning system. Background technique [0002] At present, in order to protect the safety of the pipelines of air-conditioning units of rail vehicles, pipeline components such as safety valves are often added to the pipelines. Its protective function is mainly achieved by locking the plunger of the valve through the elastic pressure of the internal spring. Once the pressure in the pipeline is abnormal, the plunger will be pushed open to form a pressure relief channel to release the high pressure. Due to CO 2 The particularity of the air-conditioning refrigerant, the designer should consider if the CO in the pipeline 2 If the refrigerant leaks, even if the pipeline pressure is not abnormal at this time, the safety valve should be opened actively to prevent the leakage of CO 2 The refrigerant...

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Problems solved by technology

[0003] In view of the above problems, the present invention studies and designs a carbon dioxide air-conditioning safety valve and air-conditioning system for rail vehicles to solve the disadvantage that the traditional air-conditioning safety valve cannot actively open the safety valve when the pipeline pressure is not abnormal.

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