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Control method for low temperature start-up of air conditioner of air-source heat pump system, and air conditioner

An air source heat pump and control method technology, applied in the field of air conditioning, can solve problems such as compressor liquid hammer damage, and achieve the effects of avoiding liquid hammer, avoiding low viscosity of lubricating oil, and avoiding too low oil temperature

Active Publication Date: 2019-04-02
NINGBO AUX ELECTRIC +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem solved by the present invention is the problem that the compressor is damaged by liquid hammer after the unit of the air conditioner is left for a long time in a low temperature environment to start heating operation

Method used

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  • Control method for low temperature start-up of air conditioner of air-source heat pump system, and air conditioner
  • Control method for low temperature start-up of air conditioner of air-source heat pump system, and air conditioner
  • Control method for low temperature start-up of air conditioner of air-source heat pump system, and air conditioner

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Embodiment Construction

[0047] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0048] see figure 1 , the present invention provides a control method for low-temperature start-up of an air-source heat pump system air conditioner, which is applied to the air-source heat pump system 10 of the air-conditioner 1 to control the heating start-up of the air-source heat pump system 10 in a low-temperature environment, thereby improving the air conditioner. The unit of 1 starts heating operation after being placed in a low temperature environment for a long time, causing the compressor 110 of the air conditioner 1 to be damaged by liquid hammer.

[0049] Among them, the air conditioner 1 includes an air source heat pump system 10, and the air source heat pump system 10 includes a compressor 110, a four-way valve 120, a fluorine ...

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Abstract

The invention provides a control method for low temperature start-up of an air conditioner of an air-source heat pump system, and the air conditioner, and relates to the technical field of air conditioners. The control method comprises the steps that in response to a start-up heating instruction of the air conditioner, whether the detected ambient temperature is lower than or equal to a preset ambient temperature threshold or nor is judged, and the detected continuous shutdown time of a compressor is greater than or equal to the preset shutdown time is judged; and if the ambient temperature islower than or equal to the preset ambient temperature threshold, and the continuous shutdown time is greater than or equal to the preset shutdown time, so that a four-way valve of the air-source heatpump system is controlled to be switched to be in a refrigeration operation state after the compressor is started up. If the air conditioner meets the preset conditions, the four-way valve is controlled to be switched to be in a heating operation state to enable the air conditioner to conduct normal heating operation. According to the control method for low temperature start-up of the air conditioner of the air-source heat pump system, liquid impact of the compressor can be effectively avoided, thus the start-up reliability of the compressor and the system operation reliability are improved,and the service life of the compressor is prolonged.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a control method for low-temperature start-up of an air conditioner in an air source heat pump system and the air conditioner. Background technique [0002] At present, with the country's emphasis on the air environment, and the policy orientation of accelerating the implementation of clean heating and continuously improving the ambient air quality, air source heat pumps have become the main force for heating in the north. Due to the cold climate and low temperature in winter in the northern region, there are higher requirements for the start-up reliability of air source heat pumps in low temperature environments. [0003] At present, most air source heat pumps do not have a corresponding optimal start-up control method for the air-conditioner unit in a low-temperature environment to start heating (deposition start-up) after being placed for a long time. If the unit is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00F25B41/04F25B49/02F25B41/20
CPCF25B13/00F25B49/022F25B2700/2104F25B2400/01F25B2400/077F25B2600/02F25B41/40F25B41/20
Inventor 李翱翔王义祥黄坤鹏王鹏帅高力胜李鹏
Owner NINGBO AUX ELECTRIC
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