Electric valve

Abstract

The invention discloses an electric valve. The electric valve comprises a stator, a plug connector, a cap cover and a valve body, wherein the stator is equipped with a channel which is axially through; the end wall surface of one end in the axial direction of the channel is equipped with a bump part; an insertion slot which extends in the axial direction of the channel is formed in the bump part;at least one part of the plug connector is arranged in the insertion slot; one side, towards the center of the channel, of the plug connector is equipped with a first matched part; the cap cover is arranged on the stator for sealing one axial end of the channel; the cap cover abuts against the plug connector for limiting the position, in the insertion slot, of the plug connector; a vent hole whichcommunicates with the channel is further formed in the periphery of the cap cover; at least one part of the valve body is plugged in the channel, the outer wall surface of the valve body is equippedwith a plurality of second matched parts which extend in the peripheral direction of the valve body; and the valve body can rotate in the channel. The electric valve can avoid torsion force, on the cap cover, generated by rotation of the valve body and the cap cover while realizing assembly and fixation of the stator and the valve body, eliminates the hidden danger that the cap cover is separatedfrom the stator, can effectively prevent water from entering the stator from a gas exhaust hole, and improves water pouring performance of the stator.

Description

technical field [0001] The invention relates to an electric valve, in particular to an electric valve installed and used in refrigeration systems such as air conditioners and refrigerators. Background technique [0002] The existing electric valves installed on refrigerators such as air conditioners and refrigerators are used to adjust the flow of refrigerant fluid. The electric valve usually includes a valve body, and a valve chamber is arranged in the valve body, and the valve needle and the valve seat in the valve chamber The electric valve also includes a housing fixed on the valve body, a rotor is installed inside the housing, and a stator is installed outside the housing. The stator can drive the rotor to rotate, and the rotor generates The rotation formed by the magnetic field is transformed into the valve contacting and leaving the valve seat. The stator is a ring, and the center of the stator is provided with a passage through the axial direction. A cap is provided ...

AI Technical Summary

Problems solved by technology

[0002] The existing electric valves installed on refrigerators such as air conditioners and refrigerators are used to adjust the flow of refrigerant fluid. The electric valve usually includes a valve body, and a valve chamber is arranged in the valve body, and the valve needle and the valve seat in the valve chamber The electric valve also includes a housing fixed on the valve body, a rotor is installed inside the housing, and a stator is installed outside the housing. The stator can drive the rotor to rotate, and the rotor generates The rotation formed by the magnetic field is transformed into the valve contacting and leaving the valve seat. The stator is a ring, and the center of the stator is provided with a passage through the axial direction. A cap is provided on the end wall of the passage, and the top of the cap is provided with The air vent, the opening end of the cap is provided with a slot, the slot is built with a buckle, the buckle is provided with a protrusion that fits with the recess on the housing, the opening of the cap The end is fixedly connected to one end of the channel of the stator; when the stator and the valve body are assembled and clamped together, one end of the valve body is passed through the stator and then snapped on the cap, but the above structure has the following disadvantages: (1) After the stator and the valve body are assembled, when the stator and the valve body rotate with each other, all the torque is applied to the cap, and both the stator and the cap are made of plastic containing 10% to 30% glass fiber, brittle Large, whether welding or bonding is used to realize the connection between the stator and the cap, the fixed connection between the stator and the cap is only the connection between the plastic surface of the stator and the plastic surface of the cap, and the cap is detached from the stator, The hidden danger of falling off; (2) The cap is made of plastic injection molding. Due to the limitation of the injection molding process, the vent hole can only be set on the top of the cap. If the vent hole is set on the side of the cap, the structure of the injection mold will be complicated. The cost is very high, and because the stator is facing up and installed basically vertically when the electric valve is working, when the electric valve is sprayed with water, water droplets can easily enter the interior of the stator from the vent hole, causing corrosion of internal claws and other parts, and the stator is water-proof poor performance

Images