Disposal method and disposal device for greasy blockage of air conditioner system and air conditioner

An air-conditioning system and processing method technology, applied in the direction of heating and ventilation control system, heating and ventilation safety system, control input related to air characteristics, etc., can solve the problem of reducing the service life of compressors and systems, reducing operating power, and lack of oil in the system Fluorine deficiency and other problems can be achieved to improve the comfort of use, ensure the service life and improve the user experience

Inactive Publication Date: 2016-04-06
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
6 Cites 15 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0004] However, for the flammable refrigerant—R290 refrigerant, its viscosity will increase sharply at low temperatures, especially in cooling and heating inverters. The ultra-low temperature refrigerant and lubricating oil need to enter the condenser (outdoor heat exchanger) through a throttling device (such as an electronic expansion valve). At the same time, the amount of flammable refrigerant is less due to safety considerations, so the pressure of the air conditioning system is higher than that of R410a The pressure of the air-conditioning sys...
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Method used

In this technical solution, the preferred range of preset openings is 450 steps to 480 steps, so as to solve the problem of oil plugging in the air-conditioning system as soon as possible, so that the air-...
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Abstract

The invention provides a disposal method for greasy blockage of an air conditioner system, a disposal device for greasy blockage of the air conditioner system, and an air conditioner, wherein a refrigerant used by the air conditioner system is a flammable refrigerant. The method comprises the following steps: when detecting that greasy blockage occurs to the air conditioner system in preset work state, recording the current opening of an electronic expansion valve; adjusting the opening of the electronic expansion valve to preset opening from the current opening, wherein the preset opening is greater than the current opening; counting the accumulated operation time of the electronic expansion valve working in the preset opening; and when the accumulated operation time reaches the preset time, detecting whether greasy blockage occurs to the air conditioner system, and performing corresponding disposal according to the detection result. By adopting the technical scheme, the problem of greasy blockage can be timely and effectively solved so that the air conditioner system can recover to normal operation, and therefore, the phenomenon of capability attenuation caused by greasy blockage of the air conditioner can be avoided, and the service life of a compressor and the air conditioner system can be ensured.

Application Domain

Mechanical apparatusSpace heating and ventilation safety systems +3

Technology Topic

Ultrasound attenuationEngineering +3

Image

  • Disposal method and disposal device for greasy blockage of air conditioner system and air conditioner
  • Disposal method and disposal device for greasy blockage of air conditioner system and air conditioner
  • Disposal method and disposal device for greasy blockage of air conditioner system and air conditioner

Examples

  • Experimental program(8)

Example Embodiment

[0057] Embodiment 1: By using the system pressure value at the preset position of the compressor of the air conditioning system every first preset time, when it is determined that the system pressure value is less than or equal to the preset pressure value, it is determined that the air conditioning system has oil clogging. Specifically, the pressure value can be detected by a pressure detection module provided at the exhaust port or the return port of the compressor of the air conditioning system, wherein when the preset position is the return port of the compressor, the value of the preset pressure value The range is -0.1 MPa ~ 0.1 MPa, when the preset position is the exhaust port of the compressor, the value range of the preset pressure value is 0.5 MPa ~ 2 MPa.

Example Embodiment

[0058] Embodiment 2: By separately detecting the exhaust pressure value at the exhaust port of the compressor of the air conditioning system and the return air pressure value at the return port of the compressor every first preset time, and then determine the exhaust pressure value and When the difference of the return air pressure value (preferably the absolute value) is less than or equal to the preset pressure value (for example, 0.1 atmosphere, that is, 0.01 MPa), it is determined that the air conditioning system has been blocked by oil. Specifically, it can be set in the air conditioner The pressure detection module at the discharge port and return port of the compressor of the system detects the pressure value.

Example Embodiment

[0059] Embodiment 3: The exhaust temperature value at the exhaust port of the compressor of the air conditioning system and the return air temperature value at the return port of the compressor are detected every first preset time, and then the exhaust temperature value is determined When the difference between the return air temperature value is less than or equal to the preset temperature value (for example, 40°C), it is determined that the air conditioning system has been blocked by oil. Specifically, it can be set at the exhaust port and the return air port of the compressor of the air conditioning system The temperature detection module to detect the temperature value.
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PUM

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Description & Claims & Application Information

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