Electronic expansion valve and refrigeration equipment

Abstract

The invention discloses an electronic expansion valve and refrigeration equipment. The electronic expansion valve comprises a valve shell, a nut, a magnetic rotor assembly and a valve needle, wherein the nut, the magnetic rotor assembly and the valve needle are all arranged in the valve shell; the valve shell is provided with a valve port; the magnetic rotor assembly comprises a screw rod; the screw rod is arranged in the nut in a reciprocating displacement manner between a first position and a second position along the axial direction of the nut, and is in threaded connection with the nut; the screw rod is further provided with a through hole; the valve needle is arranged in the through hole and the nut and matched with the valve port in an inserted mode; the valve needle and the screw rod are axially limited; when the magnetic rotor assembly rotates to drive the screw rod to move from the first position to the second position along the nut, the valve needle is pushed to move away from the valve port in the axial direction of the nut so as to gradually open the valve port; and when the screw rod moves from the second position to the first position, the valve needle is pushed to move close to the valve port in the axial direction of the nut so as to gradually close the valve port. According to the electronic expansion valve and the refrigeration equipment provided by the invention, the coaxiality of the valve needle and the valve port is improved, and noise generated by vibration of the valve needle in the working process of the electronic expansion valve is reduced.

Description

technical field [0001] The invention relates to the technical field of electronic expansion valves, in particular to an electronic expansion valve and refrigeration equipment. Background technique [0002] The existing electronic expansion valve mainly includes a valve housing, a magnetic rotor assembly, a nut, and a valve needle. The valve housing is provided with a valve port, and the magnetic rotor assembly and the valve needle are axially limited. When the electronic expansion valve is working, through the surrounding The energized coil outside the valve housing drives the magnetic rotor assembly to rotate, thereby driving the valve needle assembly to move up and down, thereby controlling the opening or closing of the valve port. [0003] However, the existing electronic expansion valve either moves up and down through the valve needle and the nut thread to control the opening and closing of the valve port, or pushes an independent needle to open or close the valve port....

AI Technical Summary

Problems solved by technology

[0003] However, the existing electronic expansion valve either moves up and down through the valve needle and the nut thread to control the opening and closing of the valve port, or pushes an independent needle to open or close the valve port. The up and down movement of the type is easy to cause damage to the valve port, and the valve needle will vibrate under the influence of the magnetic rotor assembly, resulting in a large noise. The valve needle vibrates, which also produces a large noise

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