Unlock instant, AI-driven research and patent intelligence for your innovation.

Arrangement for cooling of an electrical machine

一种冷却电机、发电机的技术，应用在家用制冷装置、冷却/通风装置、冷却流体循环装置等方向，能够解决可能介质冷却、热交换器尺寸增大、电机总体效率降低等问题，达到减小尺寸的效果

Inactive Publication Date: 2010-06-09
SIEMENS AG
View PDF6 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] Circulating the cooling medium at a high speed results in high power consumption required by the fan pump and therefore reduces the overall efficiency of the motor
In addition, the high-speed circulating cooling medium can cause unacceptable noise
[0025] There is a problem that if the motor is located in a hot location, such as a desert, it is not possible to cool the medium to a temperature below the ambient temperature
In addition, if the cooling medium needs to be cooled to close to ambient temperature, the size of the required heat exchanger will increase significantly

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Arrangement for cooling of an electrical machine
  • Arrangement for cooling of an electrical machine
  • Arrangement for cooling of an electrical machine

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0050] figure 1 A first embodiment of the cooling device according to the invention, which is based on an air-cooled generator G, is shown.

[0051] In a preferred embodiment, the generator G is located offshore and / or at a high temperature location, in the housing of the wind turbine.

[0052] There is a first cooling system CS11 connected to the generator G for direct cooling of the generator. This first cooling system CS11 includes a fan F11 to force cooling air A11 through the generator G.

[0053] There is a second cooling system CS12 with a fan F12. Ambient air A12 is forced through the second cooling system CS12 by means of a fan F12.

[0054] The second cooling system CS12 is connected to the first cooling system CS11 via an air-air heat exchanger HX11. Heat exchanger HX11 is used to transfer the dissipated heat from cooling air A11 to ambient air A12.

[0055] According to the invention, there is a third cooling system CS13, which is a refrigeration system. If ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a cooling-arrangement of an electrical machine. The electrical machine (G) is connected with a first cooling-system (CS11, CS21) for its direct cooling, while the first cooling-system (CS11, CS21) circulates a first cooling-medium (All, LQ11). The first cooling-system (CS11, CS21) is connected with a second cooling-system (CS12, CS22) to hand-over heat from the first cooling-system (CS11, CS21) to the second cooling-system (CS12, CS22). The second cooling-system (CS12, CS22) circulates a second cooling-medium (A12) to remove the received heat. The first cooling-system (CS11, CS21) is connected with a third cooling-system (CS13), which is a refrigeration-system, to additionally cool down the first cooling-medium (All, LQ11) of the first cooling-system (CS11, CS21).

Description

technical field [0001] The invention relates to a cooling device for an electric motor. [0002] In a preferred embodiment, the present invention involves a large electric machine completely enclosed by a housing or housing. Background technique [0003] The motor needs to be cooled to dissipate the heat generated by ohmic resistance, ferrohysteresis, etc. during the operation of the motor. [0004] Small motors are cooled by heat transfer from the inside of the machine to its surface. This is not possible with large motors, which exhibit relatively small surfaces relative to unit rated power and unit heat generation. [0005] When the motor is installed indoors in a dry environment, it is possible to operate the motor without a housing, so that cooling is achieved by the circulation of ambient air through the motor. [0006] When machines are installed in harsh conditions, such as generators used in offshore wind turbines, the electric machine needs to be completely encl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02K9/00H02K9/04H02K9/19H02K9/20
CPCY02E10/725F25D17/02H02K9/19Y02E10/72
Inventor S·冈德托夫特
Owner SIEMENS AG