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Electric motor, especially pump motor

An electric motor and pump motor technology, applied in the field of pump motors, can solve problems such as damage to welded joints, and achieve the effects of fewer parts, firm connection, and economical manufacturing

Active Publication Date: 2017-12-01
BUHLER MOTOR GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the known pumps there is the risk that, in the event of severe temperature fluctuations, due to the use of different materials (metal, plastics), damage to the welded connection can occur due to differences in thermal expansion
In addition, due to the illustrated large-area contact of the stator part on the motor housing, undesired noise transmission may occur

Method used

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  • Electric motor, especially pump motor
  • Electric motor, especially pump motor
  • Electric motor, especially pump motor

Examples

Experimental program
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Effect test

Embodiment Construction

[0031] figure 1 A sectional view of an electric motor 1 according to the invention is shown with a wound stator 4 , a permanent magnet rotor 2 , an insulating pot 3 , a pump head 11 , a circuit board 20 , a carrier plate 14 and a motor housing 10 . The stator 4, circuit board 20 and carrier board 14 are located in a dry chamber 25 (see figure 2 ). The permanent magnet rotor 2 is supported in the wet chamber 26 in a rotatable manner around an axis 49 (see figure 2 ), the axis is fixedly installed in the isolation tank 3 on one side, and fixedly installed in the pump head 11 on the other side. The stator 4 comprises a stator lamination stack 38 and an insulating element 6 . Stator winding 40 (see Figure 8 and Figure 9 ) is not shown here. The stator lamination pack 38 comprises a closed return ring (Rückschlussring) 39 with radially inwardly extending poles 45 which alternate with the slots into which the slot-lined regions 17, 18 of the insulating elements 5, 6 are in...

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PUM

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Abstract

The invention relates to an electric motor, in particular a pump motor, comprising a permanent magnet rotor (2); a wound stator (4) including a stator laminate package (38), insulating elements (5, 6) and a stator winding (40); a motor housing (10) made of a plastic material; and a component carrying a rotor bearing, in particular a pump head (11). The electric motor provides a generic motor with a reliable and economically feasible fastening of the stator to the motor housing, wherein heat expansion cracks are avoided and noise transmissions can be reduced. According to the electric motor, the task is solved through welding of at least one of the insulating elements and the motor housing. Besides, the invention also relates to a pump motor, especially a centrifugal pump motor.

Description

technical field [0001] The invention relates to an electric motor (1), in particular a pump motor, having a permanent magnet rotor (2); comprising a stator lamination stack (38), insulating elements (5, 6) and windings of a stator winding (40) A stator (4) of the type; a motor housing (10) made of plastic material; and components carrying the rotor bearings, especially the pump head (11). Background technique [0002] In internal combustion engine motors in the motor vehicle sector, a mechanical centrifugal pump, usually driven by the crankshaft via a toothed belt, is present as the main cooling water pump. Additionally or alternatively, an electric additional cooling water pump is used when the internal combustion engine motor is stopped, which is usually designed as an electronically commutated DC motor. The main cooling water pump can also be run electrically. Likewise, cooling water pumps are also used in hybrid and electric vehicles. There, it is mainly used in the c...

Claims

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Application Information

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IPC IPC(8): H02K1/18H02K5/04
CPCH02K1/185H02K5/04H02K3/522H02K5/128H02K15/022H02K15/14H02K2203/12H02K11/33H02K7/14F04D13/06F04D29/046F04D29/22F04D29/426H02K1/146H02K1/2706H02K5/02H02K5/24H02K11/0094
Inventor 于尔根·埃尔扎姆哈拉尔德·劳施马克西米利安·舒普夫纳托马斯·豪斯勒马蒂亚斯·克劳泽
Owner BUHLER MOTOR GMBH
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