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Control method, control system and electric pump

A control method and control system technology, applied in the field of electric pumps and their control, can solve the problems of reducing the service life of electric pumps, poor heat dissipation of electric pumps, wear of pump shafts and impellers, etc., and achieve the effect of improving service life

Active Publication Date: 2022-04-22
HANGZHOU SANHUA RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the electric pump is working, if the electric pump is in a dry running state, it may cause wear on the pump shaft, impeller, etc., and may also cause poor heat dissipation of the electric pump, which may reduce the service life of the electric pump. Therefore, it is necessary to propose a The control method and control system are beneficial to determine the operating state of the electric pump, and then control the electric pump, which is beneficial to improve the service life of the electric pump

Method used

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  • Control method, control system and electric pump
  • Control method, control system and electric pump
  • Control method, control system and electric pump

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Embodiment approach

[0034] A technical embodiment of the present invention further provides a control method of an electric pump, a first embodiment of the control method of the electric pump of the present invention, see Figures 3 through 6 、 Figures 11 through 13 , the control method includes: power-on control system, control module to obtain the current current of the electric pump, control module to judge the relationship between the current current of the electric pump and the first interval, if the current current of the electric pump is greater than the first limit current and less than the second limit current, the current current of the electric pump is in the first range, the control module judges the relationship between the current speed of the electric pump and the first set speed, if the current speed of the electric pump is greater than or equal to the first set speed, the control module determines that the electric pump is in a dry state, The control module stops outputting a control ...

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Abstract

The invention discloses a control method, a control system and an electric pump. The control system can control the electric pump. If the current current of the electric pump is in the first interval, and the current speed of the electric pump is greater than or equal to the set speed, it is judged that the electric pump is in a dry state. In this way, using the current and speed as the basis for judgment can help determine the operating state of the electric pump.

Description

Technical field [0001] The present invention relates to the field of motor control technology, in particular to an electric pump and control thereof. Background [0002] When the electric pump is working, if the electric pump is in the dry rotation state, it may cause wear on the pump shaft, impeller, etc., and may also cause the electric pump to dissipate heat poorly, which may reduce the service life of the electric pump, therefore, it is necessary to propose a control method and control system, which is conducive to determining the operating state of the electric pump, and then controlling the electric pump, which is conducive to improving the service life of the electric pump. Contents of the Invention [0003] Object of the present invention is to provide a control method, a control system and an electric pump, to facilitate the improvement of the service life of the electric pump. [0004] A control method, the control method can control the electric pump, defining the fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D15/00F04D15/02
CPCF04D15/0066F04D15/0094F04D15/0254F05D2270/304F05D2270/02
Inventor 不公告发明人
Owner HANGZHOU SANHUA RES INST CO LTD