Control method of air conditioning system and air conditioning system

An air-conditioning system and control method technology, which is applied in the field of air-conditioning systems and control of air-conditioning systems, can solve the problems of burning out compressors, low compressor superheat, and complicated operation process, and achieve the effect of avoiding damage and increasing superheat

Inactive Publication Date: 2016-04-20
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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AI Technical Summary

Problems solved by technology

[0002] Existing air conditioning systems such as multi-connected air conditioners have long piping lengths, high drop heights, and a large number of indoor units. Therefore, the operation process is relatively complicated and requires high system stability.
When the multi-connected air conditioner operates in the low-load low-temperature heating mode, the output power of the compressor is low, resulting in incomplete evaporation of the refrigerant, making the superheat of the compressor in a low state for a long time, which may burn the compressor

Method used

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  • Control method of air conditioning system and air conditioning system
  • Control method of air conditioning system and air conditioning system
  • Control method of air conditioning system and air conditioning system

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Embodiment Construction

[0029] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] An embodiment of the present invention provides a control method for an air conditioning system, referring to figure 1 , the control method of the air conditioning system includes the following steps:

[0031] Step S101, when entering the low-temperature heating mode, acquiring the exhaust superheat of the compressor;

[0032] In this embodiment, the exhaust superheat is the temperature difference between the temperature of the compressor exhaust pipe or the inlet of the condenser and the saturation temperature corresponding to the actual condensing pressure. There is a certain degree of superheat to ensure that there is no liquid entering the compressor. Refrigerant to prevent wet stroke. The superheat degree includes not only the exhaust superheat degree, but also the return air superheat degree. Its effect...

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Abstract

The invention discloses a control method of an air conditioning system, which comprises the following steps: when entering a low-temperature heating mode, acquiring exhaust superheating temperature of the compressor; and when the exhaust superheating temperature is less than or equal to a first preset value within preset time, starting electric auxiliary heat to increase the return air superheating temperature of the compressor. The invention also discloses an air conditioning system. The control method can enhance the superheating temperature of the compressor of the air conditioning system when the air conditioning system operates in the low-load low-temperature heating mode, so that the coolant can be evaporated completely, thereby avoiding damaging the compressor.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a method for controlling an air-conditioning system and the air-conditioning system. Background technique [0002] Existing air conditioning systems, such as multi-split air conditioners, have long piping lengths, high drop heights, and a large number of indoor units. Therefore, the operation process is complicated and requires high system stability. When the multi-split air conditioner is running in the low-load low-temperature heating mode, the output power of the compressor is low, resulting in incomplete evaporation of the refrigerant, making the superheat of the compressor in a low state for a long time, which may burn the compressor. [0003] The above content is only used to assist in understanding the technical solution of the present invention, and does not mean that the above content is admitted as prior art. Contents of the invention [0004] The main purpose ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
CPCF24F11/62F24F11/30F24F11/64F24F11/65F24F11/70F24F2110/10
Inventor 王新利
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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