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A fan

A blade and machine technology, applied in the field of one-way and two-way radial fans, can solve the problem of not being able to provide cooling systems or radial fans, and achieve the effects of small diameter, high flow rate and high efficiency

Active Publication Date: 2020-06-19
GE RENEWABLE SWITZERLAND GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The prior art does not provide cooling systems for water motors or radial fans that can cool the machine in pump or turbine mode

Method used

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Embodiment Construction

[0049] First refer to figure 1 , figure 2 , image 3 with Figure 4 , the rotor of the machine in the form of an electric motor-generator is indicated generally by the reference numeral 2 . The rotor 2 rotates around an axis 4 . In this embodiment, the motor is a bi-directional motor and is therefore rotatable about the axis 4 in both directions. In other embodiments, the motor may be unidirectional.

[0050] The machine also includes a fan generally indicated by reference numeral 6 . In this embodiment of the invention, the fan comprises a plurality of blades 8 extending radially from an axis of rotation coaxial with the shaft 4 . In this embodiment of the invention, a fan 6 is positioned within the components of the rotor 2 in order to cool the electric motor-generator during use of the motor.

[0051] Since the motor-generator is a bi-directional motor-generator in this embodiment, the fan 6 of the embodiment according to the first aspect of the invention must also ...

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Abstract

A radial fan comprises: a plurality of blades rotatable about an axis of rotation and extending radially from the axis of rotation; and is characterized in that each of the blades has a transverse profile that is symmetrical about a radial line of symmetry extending through the blade, and at least a portion of the profile of each blade is curved.

Description

technical field [0001] The invention relates to a fan, and in particular but not exclusively to unidirectional and bidirectional radial fans for use with unidirectional and bidirectional machines respectively. Background technique [0002] As disclosed in Japanese Patent Application Publication No. JP 2003088045, radial cooling fans are known that can be adapted to reduce noise in motors for vehicles. Radial fans, such as those described in JP 2003088045, comprise a plurality of blades extending radially outward from a central hub and rotating in a single direction. [0003] However, in hydroelectric systems where electrical power is generated by water flow, noise reduction is less critical. An example of a hydroelectric system is disclosed in International Patent Application Publication No. WO2009 / 138636 A1. [0004] Cooling fans are used to cool machines such as generators in hydroelectric systems. In order for the radial fan to cool the generator, the fan is adapted to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/30F04D17/16F04D29/28F04D29/58F04D19/00F04D29/48
CPCF04D17/16F04D19/005F04D29/281F04D29/282F04D29/30F04D29/483F04D29/5806F04D29/584F05D2240/301F05D2240/305F05D2240/306H02K9/06Y02E10/20F05D2210/12F04D25/082F04D25/166
Inventor S.A.鲍迈斯特H.C.鲍迈斯特
Owner GE RENEWABLE SWITZERLAND GMBH
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