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Liquid impact prevention control method and control device of air conditioning system and air conditioning system

An air-conditioning system and control method technology, applied in the field of air-conditioning, can solve the problems of inconvenient data detection and control, small return air superheat value, low compressor precision, etc., to facilitate data detection and control, improve precision, and avoid liquid shock Effect

Active Publication Date: 2017-05-31
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the return air superheat value of the air conditioning system is generally small, which is not convenient for data detection and control, resulting in low accuracy and poor reliability of compressor anti-liquid shock control

Method used

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  • Liquid impact prevention control method and control device of air conditioning system and air conditioning system
  • Liquid impact prevention control method and control device of air conditioning system and air conditioning system
  • Liquid impact prevention control method and control device of air conditioning system and air conditioning system

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Embodiment Construction

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0030] The liquid slugging control method for the air conditioning system, the liquid slugging control device for the air conditioning system, and the air conditioning system proposed in the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0031] figure 1 It is a flow chart of the anti-liquid slugging control method of the air conditioning system according to the embodiment of the present invention. The air conditioning system includes a compressor, a condenser, and an e...

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Abstract

The invention discloses a liquid impact prevention control method and a control device of an air conditioning system and the air conditioning system. The air conditioning system comprises a compressor, a condenser and an evaporator. The method comprises the following steps: the exhaust port temperature of the compressor is detected, and the middle temperature of the condenser and the middle temperature of the evaporator are detected; when the air conditioning system performs the refrigerating operation, the exhaust superheat degree of the compressor is calculated according to the exhaust port temperature and the middle temperature of the condenser; when the air conditioning system performs the heating operation, the exhaust superheat degree of the compressor is calculated according to the exhaust port temperature and the middle temperature of the evaporator; the exhaust superheat degree is monitored in the operation process of the air conditioning system; if the exhaust superheat degree is lower than a first preset value and lasts by first preset time, a timer is controlled to time; and when the time of the timer reaches second preset time, an outdoor unit of the air conditioning system is controlled to stop to prevent liquid impact on the compressor, so that a refrigerant returned to the compressor can be guaranteed in a pure gas state, the liquid impact is prevented, and the detecting precision is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to an anti-liquid shock control method for an air conditioning system, an anti-liquid shock control device for an air conditioning system, and an air conditioning system. Background technique [0002] In the air conditioning system, factors such as excessive refrigerant or lubricating oil, excessive adjustment (opening degree) of the expansion valve (or regulating valve), and unstable heat load of the evaporator may cause liquid refrigerant to enter the compressor cylinder. The compressor will be subjected to liquid shock. Long-term and heavy liquid shock will cause deformation and rupture of the valve plate and other components of the compressor, and even cause permanent damage to the compressor. [0003] In related technologies, the superheat degree of the return air of the air conditioning system is mostly monitored in real time to ensure that the refrigerant inhaled by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02
Inventor 谢伟敏
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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