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Method and device for detecting motor stall

A technology of motor stall and detection method, which is applied in the direction of motor generator testing, application, heating method, etc., and can solve problems such as motor stall that cannot be detected in air conditioners

Active Publication Date: 2017-01-25
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For the problem of being unable to detect the stalled motor of the air conditioner in the related art, no effective solution has been proposed at present. Therefore, the main purpose of the present invention is to provide a detection method and device for motor stalled to solve the above problems

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  • Method and device for detecting motor stall

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Embodiment Construction

[0020] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0021] figure 1 is a schematic structural diagram of a detection device for motor stall according to an embodiment of the present invention. Such as figure 1 As shown, the detection device may include: a first chopper control module 10, used to control the chopper of the fan to a first threshold; a first fan control module 20, used to control the fan when the first speed of the fan is lower than the second threshold Next, control the fan to suspend operation within the first preset time; the second chopper control module 30 is used to control the fan to chop to the first threshold after the fan is suspended for the first preset time; the first detection module 40, Used to detect whether the ...

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Abstract

The invention discloses a method and device for detecting motor stalling. The detection method includes the steps that fan chopping is controlled to a first threshold value; in the situation that the first rotating speed of a fan is lower than a second threshold value, the fan is controlled to operate within first preset time; after the fan operates for the first preset time, fan chopping is controlled to the first threshold value; whether the second rotating speed of the fan is lower than the second threshold value or not is detected; in the situation that the second rotating speed of the fan is lower than the second threshold value, the fan is controlled to stop operating within second preset time; after the fan stops operating for the second preset time, fan chopping is controlled to the first threshold value, and the fan is controlled to operate within third preset time; whether the third rotating speed of the fan is lower than the second threshold value or not is detected; in the situation that the third rotating speed of the fan is lower than the second threshold value, motor stalling of the fan is judged. By means of the method and device for detecting motor stalling, the problem that motor stalling of an air conditioner cannot be detected in the prior art is solved, and the effect of accurately detecting motor stalling in real time is achieved.

Description

technical field [0001] The invention relates to the field of detection of air conditioners, in particular to a detection method and device for motor stalling. Background technique [0002] In the prior art, during the use of the indoor motor of the air conditioner, due to various abnormal reasons, the motor may run abnormally, stall or run at a low speed. If such a situation occurs, it will not be detected and dealt with in time. It may lead to abnormal circulation of the air conditioning system, abnormal operation of auxiliary heat, and even damage to the air conditioner in severe cases. [0003] Aiming at the problem in the prior art that it is impossible to detect the stalling of the motor of the air conditioner, no effective solution has been proposed yet. Contents of the invention [0004] Aiming at the problem of being unable to detect the stalling of the motor of the air conditioner in the related art, no effective solution has been proposed at present. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/00F04D27/00G01R31/34
Inventor 陈凤武
Owner GREE ELECTRIC APPLIANCES INC
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