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Variable frequency motor used for pump

A technology for variable frequency motors and pumps, applied in electrical components, electromechanical devices, electric components, etc., can solve the problems of reduced service life, reduced motor efficiency, temperature rise, etc., to achieve the effects of small vibration, low noise, and good development prospects

Inactive Publication Date: 2015-08-19
QINGDAO WANLI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All motors can be adjusted by frequency conversion, and in most cases, the speed adjustment method of ordinary motors and frequency converters is used. It is not suitable to use ordinary motors for pump motors to implement frequency conversion speed control, mainly because the frequency converter will generate harmonics. , Harmonics will cause problems such as reduced motor efficiency, temperature rise, noise, vibration, fatigue and reduced service life for common motors

Method used

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  • Variable frequency motor used for pump
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Embodiment Construction

[0010] attached below figure 1 And attached figure 2 A variable frequency motor for pumps according to the present invention will be described in detail below.

[0011] as attached figure 1 And attached figure 2 As shown, a frequency conversion motor for a pump of the present invention is mainly composed of a rotating shaft 1, a frame 3, a stator core 5, a rotor 6, a stator winding 7, a flexible coupling 10, an encoder 13 and an axial flow fan 15, and the stator The winding 7 is embedded in the stator core 5, the stator core 5 and the stator winding 7 are fixed in the frame 3, and the two ends of the frame 3 are respectively equipped with a front end cover 2 and a rear end cover 8, and the front end cover 2 and the rear end cover The center position of 8 is equipped with bearing 9, and bearing 9 is equipped with rotating shaft 1, and rotating shaft 1 is provided with rotor 6 between the bearing 9 of front end cover 2 and rear end cover 8, and rotor 6 is installed on stato...

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Abstract

The invention discloses a variable frequency motor used for a pump. The variable frequency motor is mainly composed of a rotating shaft, a machine seat, a stator iron core, a rotor, a stator winding, a flexible coupling, an encoder and an axial-flow fan. The axial-flow fan is installed in a fan housing. The fan housing is fixed on a rear end cover through screws. The rear end cover is further provided with the flexible coupling and a support. The support is provided with the encoder. The encoder feeds running information collected by the flexible coupling back to an external controller through a data and instruction transmission line, then the controller calculates corresponding running data and sends out an instruction to a frequency converter, and the frequency converter controls the rotor to rotate. The variable frequency motor used for the pump has the advantages that the driving performance is highly efficient, the control characteristic is good, the encoder is arranged to realize frequency-conversion speed-regulation controlling over a feedback vector closed loop, the axial-flow fan is independently arranged to improve the ventilation and cooling effect during low-speed running, the noise is low, the vibration is slight, and the variable frequency motor has a good development prospect in application to a pump system controlled in a frequency-conversion speed-regulation manner.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a variable frequency motor for pumps. Background technique [0002] In the water pump water supply system, its water supply cost mainly depends on the power consumption of the water pump. The frequency conversion speed regulation control of the water pump is beneficial to energy saving. All motors can be adjusted by frequency conversion, and in most cases, the speed adjustment method of ordinary motors and frequency converters is used. It is not suitable to use ordinary motors for pump motors to implement frequency conversion speed control, mainly because the frequency converter will generate harmonics. , Harmonics will cause problems such as reduced motor efficiency, temperature rise, noise, vibration, fatigue and reduced service life for common motors. Contents of the invention [0003] The object of the present invention is to provide a pump frequency conversion motor with ...

Claims

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Application Information

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IPC IPC(8): H02K11/00H02K9/04
Inventor 不公告发明人
Owner QINGDAO WANLI TECH
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