System control method and device for overhigh module temperature

A technology of module temperature and control method, which is applied to the control input related to air characteristics, heating and ventilation control system, heating and ventilation safety system, etc., which can solve the problems of short service life and high power consumption of frequency converters, and reduce the temperature value, reducing compressor power, and ensuring the effect of system operation

Inactive Publication Date: 2015-09-30
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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Problems solved by technology

However, in the prior art, when the frequency converter module is running under high load, the ...

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  • System control method and device for overhigh module temperature
  • System control method and device for overhigh module temperature

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Embodiment Construction

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0026] Such as figure 1 As shown, the system control method for excessive module temperature of the present invention comprises the following steps:

[0027] After the air conditioner is turned on, detect the temperature value Tf of the frequency conversion module and the exhaust superheat Tdsh of the compressor, and the detection period for detecting the temperature value Tf of the frequency conversion module and the discharge superheat Tdsh of the compressor is the set time m;

[0028] Compare the detected temperature value Tf of the frequency conversion module with the set high temperature threshold Ta and the set low temperature threshold Tb, and compare the exhaust superheat Tdsh of the compressor with the set ...

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Abstract

The invention relates to a system control method and device for overhigh module temperature. The system control method includes the following steps that 1, after an air conditioner is started, the temperature value Tf of a frequency conversion module and the exhaust superheat degree Tdsh of a compressor are detected; 2, the detected temperature value Tf of the frequency conversion module is compared with a set high temperature threshold value Ta and a set low temperature threshold value Tb, and the exhaust superheat degree Tdsh of the compressor is compared with a third set threshold value Tc to control the open degree of an indoor unit electronic expansion valve and on-off of an air-conditioning system. As the temperature value Tf of the frequency conversion module and the exhaust superheat degree Tdsh of the compressor are compared with the set threshold values, whether the frequency conversion module is in a superheat state or not is judged, whether to control the open degree of the indoor unit electronic expansion valve to reduce high pressure or not is judged according to the comparison conditions, power of the compressor is reduced, the temperature value of the frequency conversion module is reduced, and the operation reliability of the frequency conversion module and a multi-split system can be improved.

Description

technical field [0001] The invention relates to the technical field of air-conditioning equipment, in particular to a system control method and device for overheating of modules. Background technique [0002] Inverter air conditioners are widely used in daily life. The main difference between inverter air conditioners and conventional household air conditioners is the addition of inverter modules, and the price of inverter modules is relatively high, so it is particularly important to protect inverter modules in inverter air conditioners. However, in the prior art, when the frequency converter module is running under high load, the temperature of the frequency converter module is high. The frequency converter has a short service life. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a system control method and device capable of monitoring the working temperature of the frequency converter module and avoiding the...

Claims

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Application Information

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IPC IPC(8): F24F11/00
CPCF24F11/62F24F11/30F24F11/64F24F11/70F24F11/83F24F11/84F24F2110/00F24F2140/20
Inventor 孙兆雷梁伯启王小明郭芳程
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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