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Variable pitch fan

A technology of variable pitch and fan, applied in non-variable pumps, pump control, pump devices, etc.

Inactive Publication Date: 2014-03-26
ZHENJIANG NEW AREA HUIJU ELECTROMECHANICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]The blades of the existing fans are fixed-pitch structures, and the air volume can only be controlled by changing the motor speed. The cost of step speed regulation is very high

Method used

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  • Variable pitch fan

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Embodiment Construction

[0010] The pitch fan of the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0011] As shown in the figure, the variable pitch fan of the present invention includes a fan motor 1, a blade 2, and a blade fixing seat 3. It is characterized in that the blade 2 and the windward angle shaft 4 are fixedly connected, and the windward angle shaft 4 is fixed on the propeller. A bevel gear 6 is fixedly arranged on the shaft head behind the bearing 5 in the blade fixing seat 3. The bevel gear 6 meshes with a driving bevel gear 7 at right angles to it, and the driving bevel gear 7 is installed at the head end of a driving shaft 8. , The driving shaft 8 passes through the bearing 10 fixedly installed in the fan motor shaft 9 and extends out of the fan motor shaft 9. The cylindrical surface of the part of the driving shaft 8 protruding from the fan motor shaft 9 is provided with an external thread 11 and a lock nut 12 , A...

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Abstract

The invention provides a variable pitch fan which comprises a fan motor, fan blades and a fan blade fixing base. The variable pitch fan is characterized in that the fan blades are fixedly connected with windward angle rotating shafts. Each windward angle rotating shaft penetrates through a bearing which is fixedly arranged in the fan blade fixing base, and the shaft head of the windward angle rotating shaft is fixedly provided with a bevel gear. The bevel gears are meshed with a driving bevel gear, and the included angles between the bevel gears and the driving bevel gear are 90 degrees. The driving bevel gear is installed at the head end of a driving shaft. The driving shaft penetrates through a bearing fixedly arranged in a rotating shaft of the fan motor and extends out of the rotating shaft of the fan motor. The cylindrical surface, extending out of the rotating shaft of the fan motor, of the driving shaft is provided with external threads and a lock nut. A handle is arranged at the tail end of the driving shaft.

Description

Technical field: [0001] The invention relates to a fan, in particular to a variable pitch fan. Background technique: [0002] The blades of the existing fans are of a fixed-pitch structure, and the air volume can only be controlled by changing the motor speed to achieve step-by-step speed regulation, while the cost of stepless speed regulation by frequency converters is very high. Invention content: [0003] The technical problem to be solved by the present invention is to provide a variable pitch fan. [0004] In order to solve the above-mentioned technical problems, the variable-pitch fan of the present invention includes a fan motor, a blade, and a blade fixing seat, and is characterized in that the blade and the windward angle rotating shaft are fixedly connected, and the windward angle rotating shaft passes through the blade fixed in the blade fixing seat. A bevel gear is fixed on the shaft head behind the bearing, and the bevel gear meshes with the driving bevel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D25/08F04D27/00
Inventor 夏致俊
Owner ZHENJIANG NEW AREA HUIJU ELECTROMECHANICAL TECH