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A low-temperature refrigeration control method, a low-temperature refrigeration control device, and an air conditioner

A refrigeration control and air conditioner technology, applied in heating and ventilation control systems, control inputs involving air characteristics, space heating and ventilation control inputs, etc. capacity and other issues to achieve the effect of ensuring the demand for low-temperature refrigeration

Active Publication Date: 2019-04-09
WUHAN REFRIGERATION EQUIP OF MIDEA GROUP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional household air conditioners do not have precise control of low-temperature refrigeration, and some even have no cooling capacity when working at low temperature
In addition, under normal circumstances, the inverter compressor can operate in a relatively large frequency range, but at ultra-low outdoor ambient temperatures, due to the better heat exchange effect of the outdoor side heat exchanger of the air conditioner, the refrigerant will enter the outdoor side for exchange. The temperature of the heater quickly approaches the ambient temperature, and the pressure drops sharply, which leads to a decrease in the amount of refrigerant entering the indoor side, and the temperature of the refrigerant entering the indoor side may be lower than the outdoor ambient temperature, so it is easy to cause frosting on the heat exchanger and freeze, further affecting cooling capacity

Method used

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  • A low-temperature refrigeration control method, a low-temperature refrigeration control device, and an air conditioner
  • A low-temperature refrigeration control method, a low-temperature refrigeration control device, and an air conditioner
  • A low-temperature refrigeration control method, a low-temperature refrigeration control device, and an air conditioner

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Embodiment Construction

[0039] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0040] Such as figure 1 A schematic flowchart of a low-temperature refrigeration control method 100 provided by an embodiment of the present invention is given. Such as figure 1 The execution subject of the shown low-temperature refrigeration control method 100 may be an air conditioner or a low-temperature refrigeration control device installed in the air conditioner, and the low-temperature refrigeration control method 100 includes:

[0041] 101. In the low-temperature cooling mode, detect the inlet temperature T0 of the indoor side heat exchanger of the air conditioner.

[0042] 102. Determine whether T0 is greater than a first preset temperature and less than or equal to a second preset temperature.

[0043] ...

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Abstract

The invention relates to a low-temperature refrigeration control method, a low-temperature refrigeration control device, and an air conditioner. The low-temperature refrigeration control method includes: in the low-temperature refrigeration mode, detecting the inlet temperature T0 of the indoor side heat exchanger of the air conditioner; judging whether T0 is greater than the first The preset temperature is less than or equal to the second preset temperature; when the judgment result is that T0 is greater than the first preset temperature and less than or equal to the second preset temperature, it is determined that the air conditioner enters the low-temperature cooling mode. The low-temperature refrigeration control method provided by the present invention, the low-temperature refrigeration control device and the air conditioner detect the inlet temperature T0 of the heat exchanger on the indoor side of the air conditioner in the low-temperature refrigeration mode, and judge that when T0 is greater than the first preset temperature, And when the temperature is less than or equal to the second preset temperature, it is determined that the air conditioner enters the low-temperature refrigeration mode to operate, so that the low-temperature refrigeration output capacity of the air conditioner can be accurately controlled to ensure the user's demand for low-temperature refrigeration.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a low-temperature refrigeration control method, a low-temperature refrigeration control device and an air conditioner. Background technique [0002] Traditional household air conditioners do not have precise control over low-temperature cooling, and some even have no cooling capacity when working at low temperatures. In addition, under normal circumstances, the inverter compressor can operate in a relatively large frequency range, but at ultra-low outdoor ambient temperatures, due to the better heat exchange effect of the outdoor side heat exchanger of the air conditioner, the refrigerant will enter the outdoor side for exchange. The temperature of the heater quickly approaches the ambient temperature, and the pressure drops sharply, which leads to a decrease in the amount of refrigerant entering the indoor side, and the temperature of the refrigerant entering the indoor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/64F24F11/65F24F11/36F24F140/20F24F110/12F24F110/10
CPCF24F11/30F24F11/62F24F11/64F24F2110/00F24F2110/10F24F2110/12F24F2140/20
Inventor 苗家将杜京昌汪亚涛
Owner WUHAN REFRIGERATION EQUIP OF MIDEA GROUP
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