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Control method and device of electronic expansion valve

The technology of an electronic expansion valve and control method is applied in the direction of control input related to air characteristics, heating and ventilation control system, space heating and ventilation control input, etc., which can solve the problems of low cooling and heating effects and energy efficiency of air conditioning systems, Achieve the effect of improving cooling and heating effect, energy efficiency and fine adjustment of opening

Active Publication Date: 2016-03-23
TCL AIR CONDITIONER ZHONGSHAN CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The present invention provides a control method and device for an electronic expansion valve, aiming to solve the problem that the opening of the electronic expansion valve remains basically unchanged in the existing air-conditioning system when the outdoor environment temperature changes little. low technical issues

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  • Control method and device of electronic expansion valve
  • Control method and device of electronic expansion valve
  • Control method and device of electronic expansion valve

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Embodiment Construction

[0055] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0056] The invention provides a control method of an electronic expansion valve. refer to figure 1 , figure 1 It is a schematic flowchart of the first embodiment of the electronic expansion valve control method of the present invention.

[0057] In this embodiment, the control method of the electronic expansion valve includes:

[0058] Step S10, periodically acquire the current temperature of the environment where the outdoor unit of the air conditioning system is located;

[0059] Wherein, the period for obtaining the current temperature of the environment where the outdoor unit of the air conditioning system is located may be set to 2-3 minutes. The control chip of the outdoor unit of the air conditioning system periodically acquires the second temperature of the environment where the outdoor unit is located, th...

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Abstract

The invention discloses a control method of an electronic expansion valve. The control method comprises the steps of periodically acquiring the current temperature of the environment in which an air conditioning system outdoor unit is positioned; when the preset temperature range which the current temperature belongs to is the same as the preset temperature range which the environment temperature of the last period belongs to, acquiring the current working frequency of an air conditioning system compressor at intervals every preset time; and every time when the current working frequency is acquired, adjusting the opening of the electronic expansion valve based on the current working frequency. The invention further discloses a control device of the electronic expansion valve. According to the control method and the control device, when the preset temperature range which the current temperature of the environment in which the air conditioning system is positioned belongs to does not change, namely, the outdoor environment temperature has slight change, the opening of the electronic expansion valve is regularly adjusted according to the current working efficiency of the compressor, so that the purpose that the opening of the electronic expansion valve is precisely adjusted is achieved, the air conditioning system is enabled to always run in better throttling modes, and the cooling and heating effects and energy efficiency of the air conditioning system are improved after the air conditioning system is started.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a method and device for controlling an electronic expansion valve. Background technique [0002] At present, the throttling methods of air conditioning systems mainly include throttling control through electronic expansion valves or capillary tubes. Among them, air conditioning systems that use electronic expansion valves as throttling components need to adjust the opening flow rate of the expansion valve to achieve the use. better condition. [0003] The existing air conditioning system mainly adjusts the opening of the electronic expansion valve through the temperature range of the outdoor environment and the fixed exhaust temperature, so as to realize throttling control during the operation of the air conditioning system. However, when the outdoor ambient temperature changes within the same temperature range, that is, the outdoor ambient temperature changes little, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
CPCF24F11/30F24F11/62F24F11/83F24F2110/00F24F2110/10F24F2110/12F24F11/84F24F11/64
Inventor 林森荣丁宁何伟洪李凤嘉黄云王燕亭
Owner TCL AIR CONDITIONER ZHONGSHAN CO LTD
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