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Motor centrifugal pump

A centrifugal pump, electric technology, applied in the direction of electric components, pumps, pump devices, etc., to achieve the effect of reducing the number and minimizing the cost of manufacturing and assembly

Active Publication Date: 2012-05-23
WILO SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of this type of injection molding encapsulation is that the plastic used is a good thermal insulator

Method used

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  • Motor centrifugal pump
  • Motor centrifugal pump
  • Motor centrifugal pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The electric centrifugal pump has a motor shaft 1 with a motor shaft 2 . The motor shaft 1 is supported within the rotor chamber 6 in two radial bearings 3 , 4 and a thrust bearing 5 . On the hydraulic side, the motor shaft 1 protrudes from the motor and is supported to the end of the pump rotor 7 which is located in a not shown pump housing.

[0013] In the rotor chamber 6 , the rotor 8 is fixed on the shaft 1 , and the rotor chamber 6 is surrounded by coils 9 and stator laminations 10 .

[0014] The rotor chamber 6 , the coils 9 and the stator laminations 10 are surrounded by a plastic material 11 which is embedded as a filler, in particular injection-molded, between these components and which preferably forms the inner wall of the rotor chamber 6 , so that an additional gap pot is not required. , but plastic constitutes this separator tank. Furthermore, the plastic material is not surrounded by the motor housing on the outside, but can itself form the outside of th...

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Abstract

The invention relates to a motor centrifugal pump having a plastic-injection-moulded stator core of the electric motor, wherein cooling channels are arranged in the plastic, through which channels the conveying medium flows.

Description

technical field [0001] The invention relates to an electric centrifugal pump comprising a stator lamination of an electric motor which is encapsulated by plastic injection molding. Background technique [0002] It is known that the stator laminations of electric motors are injection-molded with plastic. A disadvantage of this type of injection molding is that the plastics used are good thermal insulators. The installed stator is subjected to high thermal loads, and the high temperatures can be dissipated to the environment or the medium in an unfavorable manner. Furthermore, the known humid air pumps for heating installations and domestic water consist of several parts which have to be fitted together. Especially for the installation of enclosed electric motors, several installation steps are required. Contents of the invention [0003] The object of the invention is to reduce the temperature of the stator, in particular of the electric motor, in a structurally simple m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K3/24F04D25/08F04D13/06
CPCH02K3/24H02K11/0073F04D29/588F04D13/064H02K5/128F04D13/0626F04D29/5806H02K11/33Y10T29/49236
Inventor T·马特尔内G·施特雷洛
Owner WILO SE