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Method and device for controlling distribution of refrigerants of indoor units of air conditioning system

A technology of an air conditioning system and a control method, which is applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve problems such as unbalanced distribution of refrigerants, and achieve the effect of improving accuracy

Inactive Publication Date: 2016-05-18
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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Problems solved by technology

[0003] The present invention provides a method and device for controlling the flow of refrigerant in indoor units of an air-conditioning system, the main purpose of which is to solve the problem of unbalanced distribution of refrigerant due to misjudgment of refrigerant flow in indoor units in a multi-connected air-conditioning system

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  • Method and device for controlling distribution of refrigerants of indoor units of air conditioning system

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Embodiment Construction

[0038] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] The invention provides a refrigerant diversion control method for an indoor unit of an air-conditioning system.

[0040] refer to figure 1 As shown in the figure, it is a flow chart of the first embodiment of the method for controlling the distribution of refrigerant in the indoor unit of the air conditioning system according to the present invention.

[0041] In the first embodiment, the air conditioning system indoor unit refrigerant split control method includes:

[0042] Step S10, when the air-conditioning system has multiple indoor units operating in the heating mode, acquire the temperature of the refrigerant at the inlet of the heat exchanger of the indoor units operating in the heating mode every preset time interval.

[0043] The air-conditioning system in this embodiment is a multi-connected air-con...

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Abstract

The invention discloses a method for controlling distribution of refrigerants of indoor units of an air conditioning system. The process of the method is as follows: when multiple indoor units of the air conditioning system run in the heating mode, refrigerant temperatures at heat exchanger inlets of the indoor units running in the heating mode are acquired at the preset time interval; the average temperature value of the acquired refrigerant temperatures of the multiple indoor units is calculated; when differences between the refrigerant temperatures of certain indoor units and the average temperature value are larger than a preset temperature difference, current distribution of the refrigerants of the indoor units is judged to be uneven. The invention further provides a device for controlling distribution of the refrigerants of the indoor units of the air conditioning system. The method and the device solve the problem of uneven distribution of the refrigerants due to erroneous judgement of the flow of the refrigerants of the indoor units of the multi-split air conditioning system.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, in particular to a method and device for controlling the diversion of refrigerant in an indoor unit of an air conditioning system. Background technique [0002] For a multi-connected air-conditioning system with multiple indoor units, in the heating mode of the multi-connected air-conditioning system, there will be uneven distribution of refrigerant to the indoor units due to the different lengths of the piping. In the prior art, it is generally judged by the temperature in the middle of the indoor unit heat exchanger whether the refrigerant in multiple indoor units is distributed unevenly. In this case, the temperature difference in the middle of their heat exchangers is also very small. At this time, it will be considered that the refrigerant distribution of the system is balanced, but in fact, the heating effect of the indoor unit farther away from the outdoor unit is higher t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
CPCF24F11/83
Inventor 冯明坤熊美兵许永锋王新利李根
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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