Automatic adjustment circuit and automatic adjustment method for phase sequence of three-phase power supply of air conditioner

An automatic adjustment, three-phase power technology, applied to emergency protection circuit devices, electrical components, etc., can solve problems such as large current and inconvenient air conditioner work

Inactive Publication Date: 2010-05-12
FOSHAN ZHONGGEWEI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For larger air conditioners in larger places, the current required for power supply is larger
Especially for models with more than three or five horses, because the compressor often works in a high-voltage and high-current environment, it usually uses three-phase power

Method used

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  • Automatic adjustment circuit and automatic adjustment method for phase sequence of three-phase power supply of air conditioner
  • Automatic adjustment circuit and automatic adjustment method for phase sequence of three-phase power supply of air conditioner

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Embodiment Construction

[0008] Attached below figure 1 The present invention is further described, and the preferred embodiment of the present invention is: the automatic adjustment circuit and adjustment method for the phase sequence of the three-phase electric power supply of the air conditioner described in this embodiment, which includes a three-phase power supply and a compressor CM, wherein, The first phase line L1, the second phase line L2, the third phase line L3 and the neutral line N of the three-phase power supply are all connected to the terminal, and the detection ports R, S, T on the electric control board CT1 are connected to the first phase line respectively. Line L1, the second phase line L2, and the third phase line L3 are connected, and at the same time, the three normally open contacts WH1, BK1, and RD1 of the first AC contactor JC1 are also respectively connected to the first phase line L1, the second phase line L2, The third phase line L3 is connected. When the electric control ...

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PUM

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Abstract

The invention provides an automatic adjustment circuit for the phase sequence of a three-phase power supply of an air conditioner, which comprises an electrical control panel, wherein the first, second and third phases of the three-phase power supply are connected with normally-open contacts of a first alternating current contactor and the detection interfaces of the electrical control panel respectively; the normally-open contacts of the first alternating current contactor are connected with the normally-open contacts of a second alternating current contactor; the interface of a compressor is first connected with the normally-closed contact of the first alternating current contactor and then connected to the normally-closed contact of the second alternating current contactor; and the starting contacts of the first alternating current contactor and the second alternating current contactor are connected to the first and second control interfaces of the electrical control panel respectively. According to the technical scheme, when the electrical control panel detects a phase error of the first, second and third phases of the three-phase powder supply, automatic phase switching is realized by turning off the first alternating current contactor and turning on the second alternating current contactor. Thus, the compressor always works with a correct power supply, a protection effect is achieved and the aim of automatic control is fulfilled.

Description

Technical field: [0001] The invention relates to the technical field of air conditioner control circuits, in particular to an automatic adjustment circuit and adjustment method for phase sequence of three-phase electric power supply of air conditioner. Background technique: [0002] With the development of society, air conditioners are widely used in various buildings, and create a comfortable indoor environment for people by exchanging indoor and outdoor air, and perform functions such as cooling, heating, and air purification. For air conditioners with a larger capacity in some larger places, the current required for power supply is larger. Especially for models with more than three or five horses, because the compressor often works in a high-voltage and high-current environment, it usually uses three-phase power supply, and the compressor must be in the correct phase sequence to work normally. When the phase is wrong, the air conditioner cannot work, and the phase sequen...

Claims

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Application Information

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IPC IPC(8): H02H7/097
Inventor 黄涛徐林吕小忠
Owner FOSHAN ZHONGGEWEI ELECTRONICS
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