The invention discloses an electronic expansion valve. The electronic expansion valve is provided with two valve cavities, a valve port part of a valve seat is provided with a divergent area on one side of a valve port, the divergent area is approximately horn-shaped, the wall thickness h of the valve port part close to the valve port is smaller than the wall thickness H of the valve port part away from the valve port, and in this way, the wall thickness h of the valve port part close to the valve port can be correspondingly reduced. Therefore, when a refrigerant in the electronic expansion valve flows in the first flowing direction, the refrigerant enters the diverging area after passing through the valve port, due to the arrangement of the diverging area, flowing of the refrigerant passing through the valve port can be improved, flowing noise of the refrigerant is reduced, and the requirement of some systems for improving the noise is met.
电子膨胀阀,设置有两个阀腔,阀座的阀口部在阀口的一侧设置渐扩区,渐扩区大致呈喇叭状,阀口部靠近阀口处的壁厚h小于阀口部远离阀口处的壁厚H,这样,可相应减小阀口部靠近阀口处的壁厚h,使电子膨胀阀内冷媒在第一流动方向流动时,冷媒经过阀口后进入渐扩区,渐扩区的设置可以改善经过阀口后的冷媒流动,而改善冷媒流动噪音,以满足一些系统改善噪音的需求。
Electronic expansion valve
电子膨胀阀
2020-12-29
Patent
Electronic Resource
Chinese
Electronic expansion valve connecting mechanism and electronic expansion valve
European Patent Office | 2023