Surge absorption circuit for three-phase air conditioning system

A surge absorbing and air conditioning system technology, applied in emergency protection circuit devices, circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve problems such as damage to rectifier bridges in protection circuits, and ensure stability The effect of working, improving absorption and tolerance

Inactive Publication Date: 2021-07-20
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the test, multiple surge tests are still very easy to cause damage to the protection circuit and the rectifier bridge

Method used

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  • Surge absorption circuit for three-phase air conditioning system
  • Surge absorption circuit for three-phase air conditioning system
  • Surge absorption circuit for three-phase air conditioning system

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Embodiment Construction

[0027] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention. For example, although the preferred embodiment of the present invention is described here in connection with surge testing, this is not limiting, and the technical solution of the present invention can obviously be used as both a test circuit and an actual circuit. This adjustment does not deviate from the basic principle of the present invention, and therefore also falls within the protection scope of the present invention.

[0028] It should be noted that, in the description of the present invention, the terms "upper", "lower", "left", "right" and other terms indicating direction or positional relationship are based on the direction or position...

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Abstract

The invention relates to a circuit structure of a three-phase air-conditioning system, in particular to a surge absorption circuit for the three-phase air-conditioning system, and aims to solve the technical problem of how to improve the surge absorption circuit of the three-phase air-conditioning system so as to effectively improve the performance of resisting kilovolt surge high voltage for multiple times. In order to achieve the purpose, the surge protection circuit comprises a first phase line, a second phase line, a third phase line, a zero line and a first surge absorption unit, wherein the first surge absorption unit comprises a loop formed by a first piezoresistor and a first discharge tube which are sequentially connected between the first phase line and the zero line in series. According to the surge absorption circuit, the structure that the piezoresistor and the discharge tube are additionally arranged between the phase lines and the zero line is adopted, the voltage absorption and endurance capacity of the surge absorption circuit is improved, and then normal use of the three-phase air conditioning system is guaranteed.

Description

technical field [0001] The invention relates to a circuit structure of a three-phase air-conditioning system, in particular to a surge absorbing circuit for the three-phase air-conditioning system. Background technique [0002] With the continuous development of science and technology and the improvement of people's living standards, air conditioners have become an indispensable electrical product in people's daily work and life. Air conditioners are divided into three-phase air conditioners and single-phase air conditioners according to different power supply methods. Among them, the single-phase air conditioner uses 220V AC power supply, and the three-phase air conditioner uses 380V industrial power. Therefore, the single-phase air conditioner has a small power and is mostly used for family life, while the three-phase air conditioner is mostly used for large power and is used in commercial places. [0003] Since the air conditioner, especially the three-phase electric air...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
CPCH02H9/04H02H9/00
Inventor 丛安平邵海柱耿焱时斌张波冯正阳贾新旭刘春丽胡象辉
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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