Power restoration time delay contactless protection device for electric refrigerator

A refrigerator and non-contact technology, applied in household refrigeration equipment, lighting and heating equipment, household appliances, etc., can solve problems such as difficulty in starting compressors, large starting current, and burnt motors

Active Publication Date: 2015-01-14
江苏广中电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the refrigerator compressor stops working suddenly, because the air pressure inside the compressor is high, if it is turned on again immediately, it will be difficult to start the compressor, and the starting current is very large, and it is easy to burn the compressor, although this is rare Appear
During the normal operation of the refrigerator, once the 220V AC power failure occurs or the power comes on suddenly after the power failure, the compressor is forced to start in this case, and the motor is likely to be burned due to the compressor being blocked.

Method used

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  • Power restoration time delay contactless protection device for electric refrigerator

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Embodiment Construction

[0008] According to attached figure 1 The schematic diagram and description of the circuit of the non-contact protection device for refrigerator incoming call delay shown, and the connection relationship between components in each part of the circuit described in the summary of the invention, and the component technology described in the implementation mode The present invention can be realized by implementing the parameter requirements and main points of circuit fabrication, and the related technologies of the present invention will be further described below in conjunction with the embodiments.

[0009] Technical features: Refrigerator call delay non-contact protection device, which includes 220V AC power supply, RC step-down and full-bridge rectification circuit, 12V regulated power supply and filter circuit, monostable delay circuit, status indication and refrigerator A control circuit, characterized in that:

[0010] Monostable delay circuit: it is composed of time base ...

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Abstract

The invention discloses a power restoration time delay contactless protection device for an electric refrigerator. The power restoration time delay contactless protection device is characterized by comprising a 220V alternating current power supply, a resistive and capacitive voltage drop and full bridge rectification circuit, a 12V voltage stabilizing power supply and filtering circuit, a monostable time delay circuit and a state indicating and electric refrigerator control circuit, wherein the monostable time delay circuit consists of a time base circuit IC1, an electrolytic capacitor C3, a linear potentiometer RP and a resistor R2; the time base circuit IC1 adopts NE555; the state indicating and electric refrigerator control circuit consists of a resistor R3, a light emitting diode LED and a BCR bidirectional controllable silicon and electric refrigerator power supply socket CZ; and the resistive and capacitive voltage drop and full bridge rectification circuit consists of a voltage drop capacitor C1, a discharging resistor R1 and a full bridge rectification element QZ. Once power fails or is interrupted and then is restored again during normal running of an electric refrigerator, a motor is easily burned out due to blocked operation of a compressor, and the power restoration time delay contactless protection device is designed for solving the actual problem.

Description

technical field [0001] The invention belongs to the technical field of electronic control, and relates to a non-contact protection device for a refrigerator with incoming call delay. Background technique [0002] When the refrigerator compressor stops working suddenly, because the air pressure inside the compressor is high, if it is turned on again immediately, it will be difficult to start the compressor, and the starting current is very large, and it is easy to burn the compressor, although this is rare Appear. During the normal operation of the refrigerator, once the 220V AC power failure occurs or the power comes in suddenly after the power failure, the compressor is forced to start in this case, and the motor is likely to be burned due to the compressor being blocked. The non-contact protective device for delaying incoming calls of refrigerators described in the invention is designed and manufactured in order to solve this practical problem. [0003] The non-contact p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D29/00
CPCF25D29/005
Inventor 王志
Owner 江苏广中电子科技有限公司
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