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filter and refrigerator

A technology of filters and refrigerators, applied in emergency protection circuit devices for limiting overcurrent/overvoltage, multi-terminal pair networks, emergency protection circuit devices, etc., can solve problems such as poor reliability of filters and achieve reliability in use Strong, ensure stable operation, and prevent overvoltage failure

Active Publication Date: 2021-04-23
GREE ELECTRIC APPLIANCES INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a filter and a refrigerator for the problem of poor reliability of the traditional filter.

Method used

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  • filter and refrigerator
  • filter and refrigerator
  • filter and refrigerator

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Embodiment Construction

[0020] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Preferred embodiments of the application are shown in the accompanying drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the application more thorough and comprehensive.

[0021] see figure 1 , a filter, comprising: a fuse F1, a varistor RV1 and a multi-stage filter circuit 10, the first end of the fuse F1 is used to connect the power line of the refrigerator, and the second end of the fuse F1 is connected to the first end of the varistor RV1 end and the first input end of the multi-stage filter circuit 10, the second input end of the multi-stage filter circuit 10 is connected to the second end of the piezo...

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Abstract

This application relates to a filter and a refrigerator. A filter is installed between the power line of the refrigerator and the power inlet line of the refrigerator controller. When the switching power supply and IGBT drive of the electronically controlled variable frequency refrigerator controller work, electromagnetic interference occurs. can be effectively filtered. At the same time, a fuse is installed at the input end of the multi-stage filter circuit of the filter to prevent electrical safety accidents caused by excessive current. And at the input end of the multi-stage filter circuit, the varistor is used to suppress the surge voltage peak value between the phase lines, effectively ensuring the stable operation of the multi-stage filter circuit, and preventing the problem of overvoltage failure of the multi-stage filter circuit. The advantage of strong reliability.

Description

technical field [0001] The present application relates to the technical field of refrigerators, in particular to a filter and a refrigerator. Background technique [0002] With the rapid development of science and technology and the continuous improvement of people's living standards, the use of household appliances such as refrigerators in daily life is becoming more and more common, which brings great convenience to people's daily life. In order to ensure the stable and effective operation of the refrigerator, a filter is often fixed on the bottom plate of the compressor of the refrigerator to control the switching power supply and IGBT (Insulated Gate Bipolar Transistor, Insulated Gate Bipolar Transistor) driving circuits of the electronically controlled variable frequency refrigerator controller. The electromagnetic interference (Electromagnetic Interference, EMI) problem brought by the work is suppressed. [0003] However, the traditional filter has the risk of failure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/44H02M1/12H02H3/08H02H9/04H03H7/01
CPCH02H3/08H02H9/045H02M1/12H02M1/44H03H7/01H02M1/123
Inventor 唐华俊方茂长
Owner GREE ELECTRIC APPLIANCES INC
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