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

Fan generating medium wind pressure and air supply

Inactive Publication Date: 2007-10-25
LEE SHN YUNG +1
View PDF7 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] The primary object of the present invention is to provide a fan which generates medium air supply and wind pressure so as

Problems solved by technology

The centrifugal fan generates lower air supply and high wind pressure.
However, there are two inherent shortcomings happened on the two conventional fans, the first one is that the axial fan generates noise during operation although it generates high volume of air supply.
The second one is that the centrifugal fan generates less noise but it generates less air supply and cannot bring sufficient heat from the heat source.
Unfortunately, the fan with stators cannot reach

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
  • Fan generating medium wind pressure and air supply
  • Fan generating medium wind pressure and air supply
  • Fan generating medium wind pressure and air supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Referring to FIGS. 4 and 5, the fan “A” of the present invention comprises a casing 1, a blade unit 2 and a positioning frame 3. The casing 1 includes an inlet “A1” and an outlet “A2” which has a diameter larger that a diameter of the inlet “A1”. A stepped annular surface 11 is defined in an inner periphery of the casing 1 and located close to the outlet “A2” and three lugs 12 extend from an outer periphery of the casing 1 and located close to the outlet “A2”. Each lug 12 includes a recess 121 defined in a side thereof.

[0020] The blade unit 2 is driven by a motor 4 and has a hub 21 at a center thereof. A plurality of inclined blades 22 extend radially from an outer periphery of the hub 21. The hub 21 is located close to the inlet “A1” and the inclined blades 22 extend toward the outlet “A2”. A connection hole 211 is defined in a center of the hub 21 so that the output shaft 41 of the motor 4 is connected to the connection hole 211 so as to rotate the hub 21. A cover 212 is c...

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

A fan includes a casing with a small inlet and a wide outlet. A blade unit includes a hub and a plurality of inclined blades extend radially from an outer periphery of the hub. The hub is located close to the inlet and the inclined blades extend toward the outlet. A positioning frame is connected to the casing and has a cone-shaped body. A cone-shaped gap is defined between an outer periphery of the cone-shaped body and an inner periphery of the casing. The cone-shaped body and the fan unit can be manufactured by molding and the motor is enclosed by the cone-shaped body so as to reduce the space that the fan occupies. The fan generates medium wind pressure and air supply.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a fan with compact size and generates medium wind pressure and air supply. BACKGROUND OF THE INVENTION [0002] There are two types of conventional fans which are axial fans as shown in FIG. 1 and centrifugal fans as shown in FIG. 2. The feature of the axial fan is that the air stream is sucked along the axle of the blade unit and flows out axially from the opposite side of the fan. The blades of the blade unit each include a suction side and a pressure side on the upper and bottom thereof so as to drive the air streams. The axial fan generates high volume of air supply and low wind pressure. The feature of the centrifugal fan is that the air stream enters the fan along the axial direction and flows out from the fan in radial direction which is perpendicular to the axial direction. The centrifugal fan generates lower air supply and high wind pressure. However, there are two inherent shortcomings happened on the two convent...

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
IPC IPC(8): F04D19/00
CPCF04D17/06
Inventor LEE, SHN-YUNGLIN, SHUEEI-MUH
Owner LEE SHN YUNG