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Electronic expansion valve control method and device

A technology of electronic expansion valve and control method, which is applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc. It can solve the problems of uncontrollable electronic expansion valve opening, affecting the production efficiency of air conditioners, and slow vacuuming, etc., so as to improve convenience , Improve production efficiency, improve the effect of speed

Active Publication Date: 2022-02-01
NINGBO AUX ELECTRIC
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Problems solved by technology

[0003] However, in the production process of the air conditioner, it is often necessary to pump a vacuum to add liquid to the liquid storage cylinder, but at this time the outdoor unit of the air conditioner cannot be started, the controller cannot collect pressure or temperature signals, and the electronic expansion valve cannot be controlled to open. Because the electronic expansion valve is not open, it causes slow vacuuming and affects the production efficiency of the air conditioner

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  • Electronic expansion valve control method and device
  • Electronic expansion valve control method and device
  • Electronic expansion valve control method and device

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Embodiment Construction

[0029] It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0030] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0031] Figure 6 It is a schematic diagram of the working principle of the electronic expansion valve control device according to the embodiment of the present invention.

[0032]In this embodiment, the electronic expansion valve control device may include: a first controller 11 and a second controller 12, wherein the first controller 11 is connected to the second controller, and the second controller 12 is connected in communication with the electronic expansion valve; the first controller 11 is used to obtain the AC signal of the first controller, and is also used to convert the AC signal into a DC signal according to the AC signal And input to the second controller 12; the sec...

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Abstract

The present invention provides a control method and device for an electronic expansion valve. The control method includes: powering on the first controller; acquiring the AC signal of the first controller; The signal converts the alternating current signal into a direct current signal and inputs it to the second controller; the second controller starts according to the direct current signal; the second controller controls the opening of the electronic expansion valve according to the set valve step. The present invention converts the AC signal into a DC signal through the cooperation of the external first controller and the second controller, provides a stable electrical signal for the opening of the electronic expansion valve, and outputs valve step control instructions to control the electronic expansion valve. The opening of the valve, thus, can control the opening of the electronic expansion valve in the equipment without starting the whole equipment (such as an air conditioner) with the electronic expansion valve.

Description

technical field [0001] The present invention relates to the technical field of refrigeration equipment, in particular to a method and device for controlling an electronic expansion valve. Background technique [0002] The expansion valve is an important part in the refrigeration system. For example, in an air conditioner, it is generally installed between the liquid storage cylinder and the evaporator. With the change of the load of the evaporator, the opening of the valve is changed to control the flow of the refrigerant and prevent Insufficient utilization of evaporator area and knocking phenomenon. At present, for example, in the field of air conditioning, the way to open the expansion valve (such as the electronic expansion valve) is usually to start the outdoor unit of the air conditioner, and the signal collector starts to work, and transmits the collected pressure signal and temperature signal to the controller. After processing, output the corresponding pulse voltag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/02F25B41/34F25B41/345
CPCF25B49/02F25B41/31Y02B30/70
Inventor 陈体宁侯丽峰秦宪
Owner NINGBO AUX ELECTRIC
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