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Control method and device for exhaust gas temperature of air conditioner and air conditioner

A technology of exhaust temperature and control method, applied in the field of air conditioner and air conditioner exhaust temperature control, can solve problems such as exhaust cooling failure, and achieve the effect of improving lifespan, avoiding repeated fluctuations and running stably

Inactive Publication Date: 2019-11-05
NINGBO AUX ELECTRIC
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Problems solved by technology

[0003] In the existing air-conditioning temperature control method, only consider how to reduce the compressor frequency as soon as possible to achieve the purpose of cooling. In this process, the exhaust gas cooling may fail due to the excessive reduction of the compressor frequency.

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  • Control method and device for exhaust gas temperature of air conditioner and air conditioner
  • Control method and device for exhaust gas temperature of air conditioner and air conditioner
  • Control method and device for exhaust gas temperature of air conditioner and air conditioner

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Embodiment Construction

[0060] In order to make the above objects, features and advantages of the present invention more obvious and understandable, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0061] The air conditioner lowers the exhaust gas temperature by reducing the frequency of the compressor. In the process of compressor frequency control, if the amount of frequency reduction is too small, it may result in failure to cool down. However, the frequency of the compressor cannot be reduced indefinitely. The applicant found in practice that when the frequency of the compressor is low, the rate of reduction of the discharge temperature of the compressor is extremely slow, that is, the reduction of the frequency of the compressor has an The influence of temperature is very small. After careful analysis of this situation, the applicant concluded that the frequency of the compressor is too low, resulting in too little ci...

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Abstract

The invention provides a control method and device for the exhaust gas temperature of an air conditioner and the air conditioner. The control method for the exhaust gas temperature of the air conditioner comprises the steps that the exhaust gas temperature of a compressor is detected; the exhaust gas temperature is compared with a first preset temperature; if the exhaust gas temperature is greaterthan the first preset temperature, the air conditioner is controlled to enter a temperature control state; the refrigerant circulation quantity is obtained; based on the exhaust gas temperature and the refrigerant circulation quantity, the frequency of the compressor is adjusted. According to the control method and device, the situation can be avoided that due to the excessively low refrigerant circulation quantity, the exhaust gas temperature of the compressor cannot be lowered; it is guaranteed that the exhaust gas temperature can be lowered.

Description

technical field [0001] The present invention relates to the technical field of air conditioning, in particular, to a method and device for controlling the discharge temperature of an air conditioner, and an air conditioner. Background technique [0002] At present, during the operation of the air conditioner, due to reasons such as dirty condenser or poor heat dissipation, the discharge temperature of the compressor may be too high, and there is a risk of burning the components of the air conditioner such as the compressor. Therefore, it is necessary to protect and control the temperature of the air conditioner. In the existing air conditioner temperature control methods, the temperature threshold is usually set, and when the exhaust temperature reaches the temperature threshold, the frequency of the compressor is reduced to achieve the purpose of reducing the exhaust temperature. [0003] In the existing air conditioner temperature control method, only consider how to reduc...

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Application Information

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IPC IPC(8): F24F11/64F24F11/86F24F11/61F24F11/84
CPCF24F11/61F24F11/64F24F11/84F24F11/86
Inventor 陈华刘合心黄春任小辉陈东刘潘
Owner NINGBO AUX ELECTRIC
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