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Control method for preventing overload of compressor under heating mode of heat pump air conditioner

A technology of heating mode and control method, applied in heating mode, heating and ventilation control system, household heating and other directions, can solve problems such as compressor overload and shutdown, and achieve the effect of prolonging service life

Inactive Publication Date: 2010-11-24
四川长虹空调有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in order to overcome the problem that the compressor is overloaded and shut down when the heating starts when the heat pump air conditioner is used in harsh working conditions, a heat pump air conditioner is proposed to prevent the compressor from overloading in the heating mode. The control method, on the premise of not affecting the normal heating capacity of the heat pump air conditioner, protects the compressor from overloading

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0018] In this example, the control method for preventing compressor overload in the heating mode of the heat pump air conditioner is implemented by taking the following steps:

[0019] a. When starting the heat pump air conditioner compressor, first judge whether the currently set working mode is the heating mode, if so, perform step b, otherwise start normally in other modes;

[0020] b. Carry out anti-overload protection for compressor startup according to the preset anti-overload temperature protection point during startup;

[0021] c. After more than 5 minutes (starting from the start of the compressor) or after entering the first anti-overload protection within 5 minutes, the compressor will be protected against overload according to the preset anti-overload temperature protection point during operation.

[0022] In step c, the method of preset the overload prevention temperature protection point during operation is as follows: since there is a corresponding relationship...

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PUM

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Abstract

The invention relates to a control method of an air conditioner system and discloses the control method for preventing the overload of a compressor under the heating mode of a heat pump air conditioner, which can carry out the anti-overload protection on the compressor under the premise of not affecting the normal heating capacity of the heat pump air conditioner. The key points of the technical scheme comprise the following steps: a) judging whether the currently set working mode is the heating mode or not when starting the compressor of the heat pump air conditioner, if so, implementing the step b), otherwise, starting normally in another mode; b) carrying out the anti-overload protection on startup of the compressor according to a preset anti-overload temperature protection point during the startup; and c) carrying out the anti-overload protection on operation of the compressor according to the preset anti-overload temperature protection point during the operation when meeting the set condition. The control method has the benefits that the control method can effectively solve the defect that the compressor is shut down due to the overload during the heating startup under the harsh using working conditions on the basis of ensuring the normal heating capacity of the heat pump air conditioner, prolong the service life of the compressor and be applicable to heating control of the heat pump air conditioner.

Description

technical field [0001] The invention relates to a control method for an air conditioner system, in particular to a control method for preventing compressor overload in a heating mode of a heat pump air conditioner. Background technique [0002] At present, the control scheme for preventing compressor overload in the heating mode of the heat pump air conditioner system is: in the heating mode (including the start-up and operation process), the saturation temperature of the high-temperature refrigerant is detected by the temperature sensor, and the temperature is input to the MCU and the program preset System anti-overload protection temperature comparison, because the high-pressure refrigerant pressure of the system corresponds to the compressor load, and then the refrigerant pressure corresponding to the saturation temperature of the high-temperature refrigerant can be used to judge whether the compressor load is too large. Once the maximum working load of the compressor is ...

Claims

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Application Information

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IPC IPC(8): F24F11/00
Inventor 李峰杨涛
Owner 四川长虹空调有限公司