Zhejiang Dunan Artificial Environment Co., Ltd.

Yuchen He

Leqiang Liu

Jun Zhao

Xuefei Xu

Kepeng Zhang

Jinqiang Lou

Yonghao Chen

Disclosed is an electronic expansion valve. The electronic expansion valve includes a valve seat provided with a valve cavity and a valve port, wherein the valve port is arranged at an end portion of the valve cavity; a guide sleeve fixedly arranged on the valve seat, the guide sleeve is provided with a first guide hole, and the first guide hole is in communication with the valve cavity; and a valve needle movably arranged in the guide sleeve, wherein a first end of the valve needle penetrates out of the first guide hole to be arranged corresponding to the valve port, the valve needle is in clearance fit with the first guide hole, the valve needle is configured to control the valve port to be opened or closed, and a swingable amplitude of the valve needle in the first guide hole ranges from 0.4° to 2.4°.

Electronic expansion valve

An electronic expansion valve, the electronic expansion valve includes: a housing (), wherein the housing () is provided with an accommodating cavity () and a valve cavity (), the valve cavity () is used for communicating with a pipeline, the housing () includes a valve seat (), and the valve cavity () is disposed in the valve seat (); a valve core assembly (), movably disposed in the housing (); and a guide seat (), wherein the guide seat () is located between the accommodating cavity () and the valve cavity (), a balance channel () is provided between the guide seat () and the valve seat (), one end of the balance channel () is in communication with the accommodating cavity (), and the other end of the balance channel () is in communication with the valve cavity ().

Disclosed are an electronic expansion valve and a refrigeration system. The electronic expansion valve includes: a valve seat provided with an inlet, an outlet and a communication channel in communication with the inlet and the outlet; an actuator movably mounted in the valve seat, wherein the actuator is provided with a first position to block the communication channel and a second position to avoid the communication channel; and a driving mechanism connected with the actuator to drive the actuator to move between the first position and the second position, wherein the driving mechanism includes noise reduction members to reduce noise of the electronic expansion valve.

Electronic expansion valve and refrigeration system

An electronic expansion valve (-) is provided. The electronic expansion valve (-) includes: a screw (-), a valve needle (-), and an elastic member (-). One end of the elastic member (-) acts on the screw (-) and the other end acts on the valve needle (-). A bearing (-) is arranged between the screw (-) and the valve needle (-). The bearing (-) has an inner ring and an outer ring. One of the screw (-) and the valve needle (-) is fixed with the inner ring of the bearing (-), and the other acts on the outer ring of the bearing (-) through the elastic member (-). An air conditioning system using the electronic expansion valve (-) is provided. In the electronic expansion valve (-), the bearing (-) is arranged between the valve needle (-) and the screw (-).

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Zhejiang, China

Yuchen He