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Cryogenic refrigeration control method, cryogenic refrigeration control device and air conditioner

A refrigeration control and air conditioner technology, applied in heating and ventilation control systems, control input related to air characteristics, space heating and ventilation control input, etc., can solve the problem of no cooling capacity, heat exchanger frost and freezing, refrigerant Reduce the amount and other issues, to achieve the effect of ensuring the demand for low-temperature refrigeration

Active Publication Date: 2017-01-04
WUHAN REFRIGERATION EQUIP OF MIDEA GROUP +1
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  • Abstract
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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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  • Cryogenic refrigeration control method, cryogenic refrigeration control device and air conditioner
  • Cryogenic refrigeration control method, cryogenic refrigeration control device and air conditioner
  • Cryogenic refrigeration control method, cryogenic refrigeration control device and 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 cryogenic refrigeration control method, a cryogenic refrigeration control device and an air conditioner. The cryogenic refrigeration control method includes the steps of detecting the inlet temperature T0 of an indoor heat exchanger of the air conditioner in the cryogenic refrigeration mode; judging whether T0 is greater than the first preset temperature and smaller than or equal to the second preset temperature; and confirming that the air conditioner is operated in the cryogenic refrigeration mode when T0 is greater than the first preset temperature and smaller than or equal to the second preset temperature. According to the cryogenic refrigeration control method, the cryogenic refrigeration control device and the air conditioner, the inlet temperature T0 of the indoor heat exchanger of the air conditioner is detected in the cryogenic refrigeration mode, users can confirm that the air conditioner is operated in the cryogenic refrigeration mode when T0 is greater than the first preset temperature and smaller than or equal to the second preset temperature, and therefore the cryogenic refrigeration output capacity of the air conditioner can be accurately controlled, and the requirements of the users for cryogenic refrigeration can be met.

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 Applications(China)
IPC IPC(8): F24F11/00
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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