Four-way valve fault detecting method and system, and air conditioner

A fault detection and four-way valve technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve customer complaints, affect cooling (heating) effects and other issues, and achieve the effect of ensuring reliability

Active Publication Date: 2016-08-17
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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Problems solved by technology

Therefore, the four-way valve is a very important part of the air-conditioning system and plays a vital role in the heating operation. Its reliability is related to th

Method used

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  • Four-way valve fault detecting method and system, and air conditioner
  • Four-way valve fault detecting method and system, and air conditioner
  • Four-way valve fault detecting method and system, and air conditioner

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Embodiment Construction

[0030] 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.

[0031] figure 1 Structural diagram of the air conditioning system.

[0032] like figure 1 As shown, the air conditioning system used in general air conditioning includes a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, an electronic expansion valve 4, an indoor heat exchanger 5, and a gas-liquid separator 6. The connection structure of the basic air conditioning system is : The four-point valve port of the four-way valve 2 is connected with the exhaust port of the compressor 1, the inlet of the outdoor heat exchanger 3, the gas-liquid separator 6, and the indoor heat exchanger 5 respectively; the indoor heat exchanger 5 is also connected with the outdoor heat exchanger The heat exchanger 3 is conne...

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Abstract

The invention relates to a four-way valve fault detecting method, a four-way valve fault detecting system and an air conditioner, wherein the method comprises the following steps: step S1, in a heating mode, acquiring the temperature T1 in the middle of an evaporator of an indoor unit, the temperature T2 at the outlet of the evaporator, an exhaust gas temperature T3 of a compressor and the temperature T4 of a middle refrigerant pipe of a four-way valve; step S2, judging whether a relationship that (T2-T1) is smaller than or equal to a or (T3-T4) is smaller than or equal to b is set up or not, wherein a is a first temperature threshold value and b is a second temperature threshold value, re-electrifying the four-way valve and returning to the step S1 if the relationship is set up, otherwise, indicating that the four-way valve has no fault, and ending the process. According to the method, conditions for judging that the reversing of the four-way valve is unsuccessful can be used for judging whether heating of an air conditioning system has problems or not more truly and accurately, so that faults are quickly found, the system is timely maintained, and the reliability of the system is guaranteed.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a four-way valve fault detection method, system and air conditioner. Background technique [0002] With the improvement of people's living standards and the enhancement of energy-saving awareness, air conditioners have entered the majority of ordinary families and have been more and more widely used due to their energy-saving, flexible control, and easy installation and maintenance. A general comfort air conditioner has cooling and heating operation modes. In the heating mode, through the reversing action of the four-way valve, the flow direction of the refrigerant in the air conditioning system is changed, thereby realizing the heating function. Therefore, the four-way valve is a very important part of the air-conditioning system and plays a vital role in the heating operation. Its reliability is related to the reliability of the air-conditioning system. If it cannot be reversed ...

Claims

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Application Information

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IPC IPC(8): F24F11/00
CPCF24F11/30F24F11/52
Inventor 王新利许永锋熊美兵冯明坤李根王永翔
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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