A three-way solenoid valve

Abstract

The invention discloses a three-way electromagnetic valve, which belongs to the technical field of valve elements for heat exchange systems, and comprises a valve body and an electromagnetic drive mechanism. The valve body is provided with an inlet, a first outlet, a second outlet, and a first valve. Seat, the second valve seat, the third valve seat, the first valve core, the second valve core and the third valve core, the first valve core is provided with a valve hole, the electromagnetic drive mechanism includes the fourth valve core, and the valve body is provided with There is a third valve cavity, and the valve body is provided with a first conduction hole for connecting the rear end of the third valve cavity and the first outlet; when the electromagnetic drive mechanism is powered on, it drives the fourth valve core to move to open the rear end of the valve hole, and the second There is a pressure difference between the front and rear ends of the first valve core and leaves the first valve seat under the action of the pressure difference, and there is a pressure difference between the front and rear ends of the third valve core and is pressed against the third valve seat under the action of the pressure difference. The invention does not affect the movement of each valve core while enlarging the caliber of each valve port on each valve seat, and is beneficial to increase the flow rate of refrigerant flowing through each valve port per unit time.

Description

technical field [0001] The invention relates to the technical field of valve elements for heat exchange systems, in particular to a three-way solenoid valve. Background technique [0002] As we all know, there are usually two heat exchangers in an automobile air-conditioning system, so as to realize different heat exchanges under different working modes. In order to make the refrigerant flow to different heat exchangers through different flow channels in different working modes, two solenoid valves are generally used to switch the refrigerant flow direction in the existing automotive air-conditioning system. In this way, the pipeline structure of the air-conditioning system is comparatively Complicated and expensive. [0003] In order to solve the problem of complex pipeline structure caused by the use of two solenoid valves to switch the refrigerant flow direction in the existing automotive air-conditioning system, some manufacturers have developed and manufactured three-w...

AI Technical Summary

Problems solved by technology

However, a small-caliber valve port will significantly reduce the flow rate of the refrigerant per unit time, which will significantly reduce the cooling effect or heating effect of the automotive air-conditioning system, which cannot well meet the use requirements.

Images