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Stalling detecting circuit for refrigerator fan motor, refrigerator and control method of refrigerator

A technology of current detection circuit and fan motor, which is applied to the detection circuit of refrigerator fan motor stall and the control field of refrigerator, can solve the problems of poor user experience, inability to detect abnormal stall and control of the fan, etc.

Active Publication Date: 2014-11-19
HEFEI MIDEA REFRIGERATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the fan motor used in the refrigerator cannot detect the abnormal stall of the fan, or can detect the abnormal stall of the fan, but it does not control it when the fan is abnormally blocked, resulting in abnormal cooling of the refrigerator and poor user experience.

Method used

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  • Stalling detecting circuit for refrigerator fan motor, refrigerator and control method of refrigerator
  • Stalling detecting circuit for refrigerator fan motor, refrigerator and control method of refrigerator
  • Stalling detecting circuit for refrigerator fan motor, refrigerator and control method of refrigerator

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Embodiment Construction

[0041] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0042] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0043]figure 1 A schematic structural diagram of a detection circuit for a locked-rotor of a refrigerator fan motor according to an embodiment of the present invention is shown.

[0044] Such as fi...

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Abstract

The invention provides a stalling detecting circuit for a refrigerator fan motor. The stalling detecting circuit comprises a current detecting circuit, an amplifying circuit and a control circuit, wherein the input end of the current detecting circuit is connected to a drive circuit of the refrigerator fan motor and detects current passing the drive circuit in the refrigerator fan motor; the input end of the amplifying circuit is connected to the output end of the current detecting circuit, and the amplifying circuit is used for amplifying a first voltage signal output by the current detecting circuit to output an amplified second voltage signal; and the control circuit is connected to the amplifying circuit, receives the second voltage signal output by the amplifying circuit and judges whether stalling happens to the refrigerator fan motor according to change of the second voltage signal. Correspondingly, the invention further provides a refrigerator and a control method of the refrigerator. With the adoption of the technical scheme, the current signal of the fan motor can be detected; and if the fan motor abnormally stalls, the control circuit of the refrigerator performs forced defrosting control or gives an alarm after an abnormal feedback signal is detected, so that abnormal refrigeration of the refrigerator is avoided.

Description

technical field [0001] The invention relates to the technical field of refrigerators, in particular to a detection circuit for a locked-rotor of a refrigerator fan motor, a refrigerator and a control method for the refrigerator. Background technique [0002] Currently, the fan motors used in refrigerators cannot detect abnormally blocked fans, or can detect abnormally blocked fans, but do not perform corresponding control when the fans are abnormally blocked, resulting in abnormal cooling of the refrigerator and poor user experience. [0003] Therefore, how to detect the abnormally locked-rotor of the fan and how to control the abnormally locked-rotor of the fan has become a technical problem to be solved urgently. Contents of the invention [0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art. [0005] Therefore, an object of the present invention is to provide a detection circuit for a locked-rotor o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/34F25D29/00
Inventor 万江符秀亮张岩李若兰
Owner HEFEI MIDEA REFRIGERATOR CO LTD
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