Switch control apparatus of AC load, AC control system and refrigeration device

An AC load and switch control technology, applied in the field of switches, can solve the problems of not meeting the requirements of switch explosion protection, safety accidents, arcing of relay contacts, etc., to meet the requirements of explosion protection and improve safety

Inactive Publication Date: 2017-09-22
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0003] Since there is an inductive load in the control circuit of the relay, the current of the inductance will not change suddenly. When the relay is disconnected, the electromagnetic energy needs to rely on the breakpoint to generate self-inductance high voltage to break down the air to maintain the current, which will cause the relay contacts to produce arcing. It is easy to cause safety accidents and does not meet the explosion-proof requirements of the switch

Method used

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  • Switch control apparatus of AC load, AC control system and refrigeration device
  • Switch control apparatus of AC load, AC control system and refrigeration device

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Embodiment Construction

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0025] The switch control device and AC control system for AC loads according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0026] figure 1 is a schematic diagram of a switch control device for an AC load according to an embodiment of the present invention. Such as figure 1 As shown, the switch control device 100 includes an electronic switch assembly 10 and a driving module 20 .

[0027] Wherein, the electronic switch assembly 10 is composed of a rectifier b...

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Abstract

The invention discloses a switch control apparatus of AC load, an AC control system and a refrigeration device. The switch control apparatus comprises an electronic switch component, wherein the electronic switch component is composed of a rectifier bridge and a transistor, the electronic switch component is used for controlling the AC load to work or not; and a driving module, wherein the driving module comprises a control signal receiving end and a driving signal output end, the driving signal output end is connected with a control end of the transistor, the driving module receives a control signal through the control signal receiving end and generates a driving signal according to the control signal so as to drive the turn on or turn off of the transistor so as to control the on-off of the AC load. The apparatus generates no arc stretching phenomenon at the moment of power off of the AC load, satisfies the explosion protection demand of the switch and improves the safety.

Description

technical field [0001] The invention relates to the technical field of switches, in particular to a switch control device for an AC load, an AC control system and a refrigeration device. Background technique [0002] At present, most of the switches controlling AC motors or other AC loads use relays or solid state relays. [0003] Since there is an inductive load in the control circuit of the relay, the current of the inductance will not change suddenly. When the relay is disconnected, the electromagnetic energy needs to rely on the breakpoint to generate self-inductance high voltage to break down the air to maintain the current, which will cause the relay contacts to produce arcing. It is easy to cause safety accidents and does not meet the explosion-proof requirements of the switch. Contents of the invention [0004] The present invention aims to solve one of the technical problems in the above-mentioned technologies at least to a certain extent. For this reason, the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K17/725
CPCH03K17/725
Inventor 李豪
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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