Electronic expansion valve, control system and control method of control system

An electronic expansion valve and control system technology, applied in the control system, motor control, motor generator control and other directions, can solve the abnormal operation of the electronic expansion valve, the false alarm of the stepping motor stall information, the abnormal operation of the electronic expansion valve, etc. problems to reduce the impact

Active Publication Date: 2018-03-06
ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the electronic expansion valve is blocked, if the controller cannot detect the blocked rotor correctly and take corresponding measures, the electronic expansion valve will work abnormally; It will cause the electronic expansion valve to work abnormally

Method used

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  • Electronic expansion valve, control system and control method of control system
  • Electronic expansion valve, control system and control method of control system
  • Electronic expansion valve, control system and control method of control system

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0021] see figure 1 , the electronic expansion valve includes a stepping motor 10 . A controller 20 collects the running signal of the stepping motor 10 , and sends different control signals to the stepping motor 10 according to the collected running signal of the stepping motor 10 , so that the controller 20 controls the stepping motor 10 . The power supplies power to the stepping motor 10 and the controller 20 . The controller 20 may or may not be installed in the electronic expansion valve, but in a system where the electronic expansion valve is applied. The electric expansion valve is provided with a driver that receives the control signal and converts the control signal into a drive signal. The purpose of the invention can also be achieved like this.

[0022] see figure 2 , the electronic expansion valve 100 includes a stepping motor 10, th...

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PUM

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Abstract

The invention discloses an electronic expansion valve. The electronic expansion valve comprises a stepping motor and a sensor, wherein the stepping motor comprises a rotor and a stator; the rotor comprises a permanent magnet; the sensor is arranged on the periphery of the permanent magnet; the sensor and the rotor are arranged in the radial direction; the stator and the sensor are arranged in theaxial direction; and the sum of the length of a main body part of the sensor and the length of a magnetic conductive part is smaller than the length of the rotor. According to the electronic expansionvalve, the effect of the working environment of the stepping motor on signal detection of the sensor can be reduced through the structure.

Description

【Technical field】 [0001] The invention relates to the field of automobiles, in particular to a control system and a control method. 【Background technique】 [0002] The electronic expansion valve includes a stepping motor, and the stepping motor is controlled to rotate by the controller. When the stepping motor encounters an obstacle during its rotation, the stepping motor will stall. When the electronic expansion valve is blocked, if the controller cannot detect the blocked rotor correctly and take corresponding measures, the electronic expansion valve will work abnormally; It will cause the electronic expansion valve to work abnormally. [0003] Therefore, it is necessary to improve the existing technology to solve the above technical problems. 【Content of invention】 [0004] The object of the present invention is to provide an electronic expansion valve, a control system and a control method, which can improve the detection accuracy of the locked-rotor signal of the st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/04F16K37/00
CPCF16K31/04F16K37/0025F16K31/042H02P8/36F25B49/00H02K37/00F16K37/0041H02P29/02Y02B30/70
Inventor 不公告发明人
Owner ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
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