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Electric motor having a coaxially associated pump

A technology of coaxial arrangement and electric motor, which is applied in the field of electric motors, can solve the problems of weakening the hub-shaft connection of the flywheel, achieve the effect of improving the cooling effect and reducing the risk of fracture

Active Publication Date: 2011-02-02
KSB AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So it weakens the hub-shaft connection of the flywheel

Method used

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  • Electric motor having a coaxially associated pump
  • Electric motor having a coaxially associated pump
  • Electric motor having a coaxially associated pump

Examples

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Embodiment Construction

[0026] figure 1 A fluid-cooled motor 1 with a housing 2 is shown. The housing is designed as a pressure housing. The motor 1 is filled with fluid, and a high-pressure cooling system 3 is connected to the end of the motor to dissipate electrical power losses. A radial bearing and an axial bearing are arranged at the end 4 of the motor, wherein the axial bearing simultaneously serves as a delivery device for cooling water circulating in the motor and through the cooler 3 . The driving force of the motor acts on the shafting device 5 and transmits the torque to the pump 6 arranged coaxially with the electric motor 1 . The impeller 8 and the downstream guide 9 are arranged in the pump housing 7 , and the pump housing 7 is closed by a cover part 10 and connected to the housing 2 of the motor 1 via a tie rod 11 . A flywheel 12 is provided in the interior of the multi-part cover part 10 . The effect of its moment of inertia is to keep the shafting arrangement 5 to which the impel...

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Abstract

The invention relates to an electric motor (1) having a coaxially arranged pump (6) for a coolant circuit, in particular in a system with temperature transfer or heat transfer. Within housing parts (7, 10) which are configured as a hermetically sealed pressure enclosure, a shaft assembly (5) transmits a torque from the electric motor (1) to at least one impeller (8) which is arranged in the pump housing (7), and a flywheel (12) is arranged between the electric motor (1) and the pump housing (7). All the rotating parts are arranged within a hermetically sealed motor / pump assembly, and the motor / pump assembly is filled with fluid. Here, the flywheel (12) comprises a flywheel body (13) having a multiplicity of cavities (16, 17) and having heavy-metal inserts (16, 17) which are arranged in the cavities. A heavy metal having a density of greater than 11.0 (kg / dm<3>) forms the heavy-metal inserts or is arranged therein, and the flywheel body (13) is composed of a high-strength material.

Description

technical field [0001] The invention relates to an electric motor with a coaxially arranged pump for a coolant circuit, in particular in devices with temperature transfer and / or heat conduction. Inside the housing part configured as a hermetically sealed pressure housing, the shafting arrangement transmits the torque from the electric motor to at least one impeller arranged in the pump housing, and a flywheel is arranged between the motor and the pump housing, all rotating parts All are arranged in a hermetically sealed motor-pump unit, and the motor-pump unit is filled with fluid. Background technique [0002] It is known to use motor-pump units equipped with flywheels in power plants equipped with heat-generating devices and having temperature transfer and / or heat conduction means. This is a safety measure to allow the pump to maintain coolant circulation for a minimum time through the flywheel's inertial capacity in the event of a possible failure. Even in the event of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/04F16F15/30
CPCF16F15/30F04D13/06F04D13/02F04D29/04
Inventor B·布雷克特R·格拉伯U·布鲁恩斯H·哈特曼
Owner KSB AG
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