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Compressor overcurrent protection device, method and electrical equipment

An overcurrent protection, compressor technology, applied in the field of compressors, can solve the problems of reducing the operating efficiency of the controller, occupying control resources, damage, etc., to achieve the effects of low cost, avoiding mutual interference, and saving control resources

Active Publication Date: 2019-09-10
GREE ELECTRIC APPLIANCES INC
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the one hand, it takes a certain amount of time for the control chip of the main controller to make a logical judgment, but in many cases, the protected device needs to act quickly when the overcurrent occurs, and the damage caused by the time delay will increase
On the other hand, the method of overcurrent protection through the main controller will occupy the control resources of the main controller, which will reduce the operating efficiency of the controller for the controller with tight control resources

Method used

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  • Compressor overcurrent protection device, method and electrical equipment
  • Compressor overcurrent protection device, method and electrical equipment
  • Compressor overcurrent protection device, method and electrical equipment

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Embodiment Construction

[0047] The present invention will be described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless specifically stated otherwise. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features which are considered to be preferred or advantageous.

[0048] Terms such as "first" and "second" appearing in the present invention are only for convenience of description, to distinguish different components with the same name, and do not indicate a sequence or a primary and secondary relationship.

[0049] Air conditioners, water heaters and other electrical appliances that can exchange heat are equipped with compressors, and the main control board can realize the control of components such as compressors. In order to prevent the current in the compressor circuit (electric control circuit) from bei...

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Abstract

The present invention relates to a compressor over-current protection device and method, and an electric appliance device. The compressor over-current protection device comprises: an electric signal obtaining circuit (10) configured to obtain electric signals in a compressor loop; a comparison circuit (20) configured to compare the electric signals obtained by the electric signal obtaining circuit(10) with a reference value and output triggering signals in the condition that the electric signals obtained by the electric signal obtaining circuit (10) exceed the reference value; and a relay drive circuit (30) configured to control motion of a relay when triggering signals output by the comparison circuit (20) are received to disconnect a compressor loop. The over-current protection circuitcan be independent operated off from a main controller, can save control resources of the main controller, does not need logic determination of the main controller, is fast in reaction speed, and avoids mutual interference of the over-current protection circuit and the main controller. The protection circuit can be an independent module and used for various types of compressors, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a compressor overcurrent protection device, method and electrical equipment. Background technique [0002] In order to prevent the current in the compressor circuit from being too large, the over-current protection is generally realized through the detection and judgment of the main controller. On the one hand, it takes a certain amount of time for the control chip of the main controller to make a logical judgment, but in many cases, the protected device needs to act quickly when the overcurrent occurs, and the damage caused by the time delay will increase. On the other hand, the method of performing overcurrent protection through the main controller will occupy the control resources of the main controller, and will reduce the operating efficiency of the controller for the controller with tight control resources. Contents of the invention [0003] The purpose of the presen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/08
Inventor 祝先涛钱沛刘红燕刘海彬钟路平胡国辉梁紫锋
Owner GREE ELECTRIC APPLIANCES INC
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