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Method and device for controlling refrigerant of air conditioner and air conditioner

A control method and air-conditioning technology, applied in refrigeration and liquefaction, refrigerators, refrigeration components, etc., can solve problems such as uneven distribution of refrigerants, neglect of heat exchange in internal units, and inability to take into account refrigerant distribution.

Active Publication Date: 2017-12-15
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Superheat control can make full use of the efficiency of the heat exchanger, but in a multi-connected system, it cannot take into account the refrigerant distribution of each internal unit well, which may easily lead to uneven refrigerant distribution among the internal units
The average temperature control method can take into account the refrigerant distribution of each internal unit, but ignores the heat transfer of the internal unit

Method used

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  • Method and device for controlling refrigerant of air conditioner and air conditioner
  • Method and device for controlling refrigerant of air conditioner and air conditioner
  • Method and device for controlling refrigerant of air conditioner and air conditioner

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Embodiment Construction

[0030] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

[0031] Air conditioners are divided into indoor units and outdoor units. The indoor units mainly include heat exchanger components (evaporator components and condenser components), fans, shut-off valves and electrical control components. The outdoor unit mainly includes compressors, vapor-liquid separators, heat exchanger components (evaporator components and condenser components), extension units, stop valves and electrical control components. At the same time, there is a necessary connecting pipe assembly between the indoor unit and the outdoor unit. In the embodiment of the pr...

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Abstract

The embodiment of the invention provides a method and device for controlling a refrigerant of an air conditioner and the air conditioner, and belongs to the field of domestic appliances. The method comprises the steps that the number of inner units which are operated in the air conditioner operation process is determined; whether the number is changed or not when the air conditioner is continuously operated for a preset period of time; on the condition that the number is not changed, the refrigerant of the air conditioner is controlled according to a superheat degree control method; and on the condition that the number is not changed, the refrigerant of the air conditioner is controlled according to an average temperature control method. The device comprises a controller. The air conditioner comprises the device. Accordingly, whether the refrigerant of the air conditioner is controlled by the average temperature control method or the superheat degree control method is determined according to the number of the operated inner units, the efficiency of heat exchangers of the inner units can be sufficiently utilized, and refrigerant distribution of the inner units is achieved.

Description

technical field [0001] The invention relates to the field of household appliances, in particular to a method and device for controlling the refrigerant of an air conditioner, and an air conditioner. Background technique [0002] Refrigerant, commonly known as refrigerant, is a working fluid used in refrigeration and air-conditioning systems to transfer heat and produce freezing effects. According to the working method, refrigerants can be divided into primary refrigerants and secondary refrigerants; according to material properties, refrigerants can be divided into natural refrigerants and synthetic refrigerants. At present, the refrigerant control in the cooling mode of the air conditioner generally adopts the method of superheat control or average temperature control. Superheat control can make full use of the efficiency of the heat exchanger, but in a multi-connected system, it cannot take into account the distribution of refrigerant among each internal unit, which may e...

Claims

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Application Information

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IPC IPC(8): F24F11/00F25B41/06F25B41/34
CPCF25B2600/2513F25B2700/21175F25B41/37F25B41/31
Inventor 李健锋邓建云
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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