Solenoid switching valve

Abstract

The invention discloses an electromagnetic switching valve, which is characterized in that it includes a main valve and a pilot valve, the pilot valve includes a first pilot valve and a second pilot valve; the first pilot valve includes a first guide portion, so The second pilot valve includes a second guide portion; the main valve includes a main valve body, and the main valve body includes a first flow channel, a second flow channel, a third flow channel, a fourth flow channel, and a first main valve a diversion channel and a second main valve diversion channel, the first diversion part and the second diversion part are respectively fixedly connected to the main valve body; the first diversion part includes a first valve port part , a first guide channel and a second guide channel, one end of the first guide channel is communicated with the first valve port, and the other end of the first guide channel is connected with the first main valve. The second flow guide portion includes a second valve port portion, a third flow guide passage and a fourth flow guide passage, and one end of the fourth flow guide passage is communicated with the second valve port portion, so The other end of the fourth guide channel is communicated with the second main valve guide channel.

Description

technical field [0001] The invention relates to the field of refrigeration control, in particular to an electromagnetic switching valve. Background technique [0002] Please refer to figure 1 , figure 1 It is a schematic structural diagram of a typical electromagnetic four-way valve in the background art. [0003] As shown in the figure, a conventional electromagnetic four-way valve can generally be used in a refrigeration system such as an air conditioning system, which includes a main valve 10' and a pilot valve 20'; the main valve 10' includes a valve body 11', and the valve body 11' has a The exhaust pipe D connected to the exhaust port (connected with the high pressure area), the suction pipe S connected with the suction port of the compressor (connected with the low pressure area), the connecting pipe E connected with the indoor heat exchanger 30' and the outdoor heat exchanger The connecting pipe C connected to the heater 40'; the two ends of the valve body 11' are...

AI Technical Summary

Problems solved by technology

[0008] The above electromagnetic four-way valve is suitable for the refrigeration system of household air conditioners, but with the development of technology, the application fields of electromagnetic switching valves continue to expand. For example, in the field of automotive air conditioning, electromagnetic switching valves are also required to switch the direction of refrigerant flow. , especially the carbon dioxide refrigerant commonly used in automobile air conditioners, the use conditions are different from those of ordinary household air conditioners. If the above electromagnetic four-way valve is directly applied to automobile air conditioners, the corresponding working conditions cannot be met, and there are also differences in the flow path switching requirements for refrigerants.

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