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Method and device for judging failure of frequency conversion module temperature detecting device

A technology of temperature detection device and frequency conversion module, which is applied in heating methods, lighting and heating equipment, space heating and ventilation, etc. It can solve problems such as frequency converter detection, detection device damage, and failure to ensure frequency converter, so as to avoid damage Effect

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

At that time, after a long time of use, the detection device may be damaged and become invalid. If the detection device fails, the temperature of the frequency converter cannot be detected, and it is impossible to ensure whether the frequency converter is working at a safe operating temperature, resulting in the failure of the frequency converter module. job security cannot be guaranteed

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  • Method and device for judging failure of frequency conversion module temperature detecting device
  • Method and device for judging failure of frequency conversion module temperature detecting device

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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] like figure 1 Shown, method of the present invention comprises the following steps:

[0027] Step 1, when the system is turned on, detect the real-time temperature Tf0 of the frequency conversion module;

[0028] Step 2, when the continuous power-on time reaches the set time b, detect the real-time temperature T0 of the environment and the real-time temperature Tf of the frequency conversion module, and calculate the temperature increase of the frequency conversion module ΔTf=Tf-Tf0;

[0029] Step 3, determine the normal temperature variable c of the frequency conversion module according to the real-time temperature T0 of the environment;

[0030] Step 4, comparing the temperature increase ΔTf of the freque...

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Abstract

The invention relates to a method and device for judging failure of a frequency conversion module temperature detecting device. The method includes the following steps that 1, when a system is started, the real-time temperature Tf0 of a frequency conversion module is detected; 2, when the starting duration reaches set time b, the real-time environment temperature T0 and the real-time temperature Tf of the frequency conversion module are detected, and the temperature increment delta Tf of the frequency conversion module is calculated according to the formula delta Tf=Tf-Tf0; 3, the normal temperature variable c of the frequency conversion module is determined according to the real-time environment temperature T0; 4, the temperature increment delta Tf of the frequency conversion module is compared with the normal temperature variable c of the frequency conversion module to judge whether the frequency conversion module temperature detecting device fails or not. By means of the method, whether the frequency conversion module temperature detecting device goes wrong or not can be judged before the temperature of the frequency conversion module becomes the highest, it is avoided that an alarm cannot be given before the frequency conversion module is heated to the safety temperature because the frequency conversion module cannot be detected, and therefore damage to the frequency conversion module is avoided.

Description

technical field [0001] The invention relates to the technical field of air-conditioning equipment, in particular to a method and a device for judging the failure of a temperature detection device of a frequency conversion module. 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. Therefore, a detection device for detecting the temperature of the frequency conversion module is generally installed in the frequency conversion air conditioner to ensure that the frequency ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
CPCF24F11/30F24F11/52
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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