Four-way valve for Carnot cycle system

Abstract

A four-way valve for a Carnot cycle system comprises a four-way valve body consisting of a valve body and a columnar valve spool. The four-way valve body is connected with an air conditioner through a pipeline, mutually symmetric channels are arranged inside the valve spool and penetrate through the surface of the valve spool, the valve body is provided with more than one through hole corresponding to the channels, and the diameter of each through hole is as same as that of an opening of each channel. A refrigerating state and a heating state are switched only by using a steeping motor for driving the valve spool and the valve body to be in running fit, modes can be switched by means of short-time electrification during running, and the valve can be kept continuing running in the original mode after power is cut off. Besides, the valve spool is hermetically connected with the inner surface of the valve body, so that tightness of the four-way valve is improved, and back flowing is prevented. The shortcomings of complicated structure, difficulty in manufacture, poor reliability and the like of a traditional four-way valve are overcome. The four-way valve has the advantages of simple and reasonable structure, high energy efficiency ratio, high control precision and short staring time, and is convenient for popularization and application.

Description

technical field [0001] The invention relates to a four-way valve used in a Carnot cycle system. Background technique [0002] When the traditional refrigeration or heat pump system switches from cooling to heating mode, it needs to continuously supply power to the pilot valve, and through the movement of the slider inside the pilot valve, the guide tubes at the upper and lower ends of the valve body are connected to introduce high-pressure refrigerant and low-pressure refrigerant. The two ends of the main valve of the four-way valve establish a pressure difference to complete the reversing of the refrigerant flow. The internal structure of this four-way valve is complicated, the manufacturing process is difficult, the capillary pipeline is easily blocked by welding, and the internal piston is easily burned and deformed; the operation reliability is poor, and the internal structure often occurs. Work. [0003] In winter indoor and outdoor working conditions, usually the air...

AI Technical Summary

Problems solved by technology

The internal structure of this four-way valve is complicated, the manufacturing process is difficult, the capillary pipeline is easily blocked by welding, and the internal piston is easily burned and deformed; the operation reliability is poor, and the internal structure often occurs. Work

[0003] In winter indoor and outdoor working conditions, usually the air conditioner or heat pump system is in the heating mode for a long time, which means that the four-way valve needs to be powered all the time to ensure the stable operation of the heating. The existence of power consumption is not conducive to energy saving and emission reduction. Secondly, the traditional four-way valve needs to continuously supply power to the valve body. Once the power is cut off, it will switch to the default mode, which requires high reliability of the circuit and control parts.

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