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Spiral blower

a blower and spiral technology, applied in the field of blowers, can solve the problems of lowering the efficiency of the overall blower system, and achieve the effects of increasing width, constant radial dimension, and increasing cross-sectional area

Inactive Publication Date: 2008-09-25
BELANGER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention is an improved blower housing that allows air to be axially admitted to an impeller. The housing has a spiral air channel with a constant radial dimension but increasing cross-sectional area as it progresses towards an outlet. The housing has an asymmetric design with one end wall being planar and the other end wall moving progressively farther away to effect the increase in cross-section. The motor is mounted within the volute, creating a screened inlet and a transition section to draw air into the impeller. In another embodiment, two asymmetric housing blowers can be mounted side by side to create a double-width, long, narrow air outlet. In a still third embodiment, a symmetrical volute housing is created where both end walls progressively flare out and away from each other to create the air channel of increasing cross-sectional area."

Problems solved by technology

It is well known, however, that frictional drag in the transition section causes energy losses in the air stream and lowers the efficiency of the overall dryer system.

Method used

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Examples

Experimental program
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Embodiment Construction

[0015]Referring to FIGS. 1, 2, and 3 there is shown a dryer blower 10 for directing a high-velocity air stream at the exterior surfaces of a just-washed vehicle in a car wash facility. The blower 10 comprises an electric motor 12 having an output shaft 38 connected to spin an impeller 14 mounted within the confines of a volute housing 16, The housing may be rotoformed of a suitable material such as high-density polyethylene. The housing may be formed of other materials using other construction processes as will be apparent to those skilled in the art.

[0016]The housing 16 has on one side an essentially planar end wall 18 and on the other side an end wall 20 defining an air channel which increases in width, i.e., in the direction parallel to the axis of rotation of the motor 12 as it progresses toward an outlet section 22 having a long, narrow outlet opening 24. Air is inlet to the impeller through a cone 28 which is supported by a screw-mounted spacer 26 also supporting a safety scre...

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PUM

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Abstract

A dryer blower for carwash facilities comprising a volute housing for an impeller having an axial intake and a tangential air outlet. The volute housing is characterized by a spiral channel of increasing cross-sectional area as a result of an increasing width and substantially constant radial dimension. The spiral housing terminates in a long, narrow output to create an air knife which effectively strips water from the surfaces of a just washed vehicle. The housing can be asymmetric or symmetric and housings can be arranged in side by side tandem to create additional length in the air outlet.

Description

FIELD OF THE INVENTION[0001]This invention relates to blowers for drying just-washed vehicles in an automatic or semi-automatic car wash.BACKGROUND OF THE INVENTION[0002]It is common in automatic and semi-automatic car washes to use electric motor-driven blowers to remove rinse water from just washed vehicles. In a typical drive through car wash, the blowers are mounted in multiples near the exit. They may also be mounted on rollover gantries.[0003]Dryer blowers can take various forms; for example, rows of cylindrical tubes may be connected to an air plenum to direct air toward the surfaces of a vehicle. As another example, an air plenum or housing may be connected by rigid or flexible structures having long narrow outlets to create an air blade effect which drives rinse water from the surfaces of the vehicle, typically pushing the water from the front to back of the vehicle as it passes a dryer station.[0004]Another example of dryer blower structures is the so-called “volute” or sp...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F04D1/00
CPCF04D25/166F04D29/4233F04D29/441F04D29/4226
Inventor WEYANDT, THOMAS E.
Owner BELANGER