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Venturi fan

A technology for fans and fan blades, used in climate sustainability, non-displacement pumps, mechanical equipment, etc., can solve problems such as high noise

Inactive Publication Date: 2007-10-31
帕特森风扇公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But they are noisy

Method used

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Embodiment Construction

[0017] The present invention is an improvement in venturi type fans. Venturi fans move large volumes of air forward and are suitable for large buildings such as warehouses. Unfortunately, prior art venturi fans are relatively noisy.

[0018] FIG. 1 shows a venturi fan 10 according to the invention in a perspective view. The fan 10 has a housing 12 that is flared at both a front 14 and a rear 16 and has a front finger guard 18 . Inside the housing 12 is a motor 22 and a fan blade assembly 24 .

[0019] Reference is now made to FIG. 2 which shows a side view of a venturi fan 10 in accordance with a preferred embodiment of the present invention. The fan 10 is rotationally symmetrical such that it looks the same from all sides. Unlike prior art venturi fans, the fan shown in FIGS. 1-6 in the preferred embodiment has an opening, preferably a plurality of openings, such as an array of perforations or slots, formed in the side wall 28, but , more preferably, said plurality of op...

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Abstract

A venturi-type fan is composed of a wire basket between front and rear flares. The wire basket has a rear portion to which the motor and fan blade assembly is mounted. The rear flare controls the admission of air into the fan to reduce turbulence and allows the flow of air to be accelerated and directed forward in a slowly diffusing column. The openness of the sides of the present fan reduces the noise generally associated with close-sided venturi fans without degrading air movement characteristics.

Description

technical field [0001] The present invention relates generally to a fan, and more particularly to a fan used in an industrial or commercial setting. Background technique [0002] The purpose of a fan is to move air in order to ventilate and cool an area. In industrial and commercial environments, where air conditioning cannot be used, fans are critical to the health and comfort of employees. [0003] There are a variety of fans used in industrial and commercial environments. One type consists of fan blades enclosed in a wire frame casing or "cage," sometimes mounted on a base. The shaft of the motor on the outside of the housing protrudes into the housing to turn the blades. These fans work well in smaller areas. Increases in motor speed and blade pitch allow this type of fan to throw more air, but also increase noise. Another type of fan is the Venturi fan, which has a metal, Venturi-shaped housing within which the motor and set of blades are mounted. The set of vanes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D11/00F03B1/00F03B11/02
CPCY02E10/226Y02E10/223Y02E10/20
Inventor 马克·莫尔范斯·M·帕特森托马斯·索尔兹伯里
Owner 帕特森风扇公司
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