CN2485461Y

CN2485461Y - Fan with multiple axial outlet housing

Info

Publication number: CN2485461Y
Application number: CN 01245674
Authority: CN
Inventors: 柴岩芝
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-01
Filing date: 2001-06-01
Publication date: 2002-04-10
Anticipated expiration: 2011-06-01

Abstract

The utility model relates to a fan with multiple axial outlet housings. The utility model is characterized in that: the top of a snail shell is provided with a certain axial wind outlets and the districts of the 360 degree divided by certain is provided with a certain sections of extending spiral curve surfaces which are mutually displaced; wherein, the displacement is that the inside of the rear end of the extending spiral curve surface is provided with a beginning end of another extending spiral curve surface; thereby, the utility model is characterized in that: the structure is reasonable, the utility model can blow out warm wind from a plurality of wind channels in an axial and radial way and can personally keep the integrity and high effective of the a surname spiral curve surface, the total wind capacity of the whole machine is obviously elevated etc.

Description

The blower fan of axial type dislocation multiple exit spiral case

The utility model relates to a kind of structure improvement of centrifugal fan, especially relates to a kind of blower fan that has the two-way dislocation multiple exit spiral case of axial air-out.Relate to a kind of multi-functional, efficient heating device (super bath) that adopts this blower fan to make more specifically.

At present, centrifugal fan adopts the wall body of unidirectional Archimedes spiral face as housing more.Therefore, when motor was made antiport, performances such as its flow, blast obviously descended.

For this reason, the claimant had once proposed the application for a patent for invention of " two-way blower fan " by name.This patent major character is that described impeller system is staggered by forward blade and backward vane and forms, and promptly the section of blade is man type, and described spiral case is the coaxial two-direction spiral case, and it is provided with opening orthogonal ventilation air channel and water conservancy diversion air compartment.Though impeller and the two-way spiral case of this technological scheme by particular design realized forward and reverse two-way ventilation, solved the problem that a machine not only can blow warm braw but also can make things convenient for timely exhaust more effectively.But still exist impeller design, make comparatively complicatedly, axially respectively have only one with exhaust passage radially, difficulty can blow out the deficiency of warm braw at the axial while multiple duct of warm-air drier.

Goal of the invention of the present utility model is to overcome the deficiencies in the prior art, provides a kind of rational in infrastructure, can keep the blower fan of the axial type dislocation multiple exit spiral case of radially air-out again simultaneously from the axial air-out in a plurality of air channels.

Another goal of the invention of the present utility model provides a kind of having on the spiral case of exhaust port radially, no matter worm gear rotates forward or backwards, all can keep launching the blower fan of the more complete dislocation of axial type efficiently of helical face multiple exit spiral case voluntarily.

Goal of the invention of the present utility model mainly is achieved by following technical proposals: be provided with N axially exhaust outlet on described spiral case, and be provided with the expansion helical face that the N section misplaces each other in the interval of its 360 °/N; Wherein, described dislocation is that an inboard of launching helical face end is provided with the starting point that another launches the helical face.Described expansion helical face can be the line style of various existing Blower Housings, and wherein the most frequently used is the Archimedes spiral face.

N described in the utility model generally is advisable with 2-4.For example, described N=2 promptly is symmetrically arranged with two axial exhaust outlets, and is provided with two sections expansion helical faces of dislocation each other in 180 ° the interval betwixt; Wherein, described dislocation is that an inboard of launching helical face end is provided with the starting point that another launches the helical face.And described N=3 promptly is symmetrically arranged with three axial exhaust outlets, and is provided with three sections expansion helical faces of dislocation each other in 120 ° the interval betwixt; Wherein, described dislocation is that an inboard of launching helical face end is provided with the starting point that another launches the helical face.

Goal of the invention of the present utility model can also further be able to perfect by following technical proposals: described expansion helical face is an Archimedes spiral, and on the second half section of every section Archimedes spiral face, be provided with a perpendicular curved guiding surface, change axial air-out effectively into the wind that will be produced in each section Archimedes spiral face.For example, uniform being arranged on the heating device, can be independently of one another with the wind heating, and blow out from the panel of heating device symmetrically.

Side in described expansion helical face and exhaust port boundary is provided with fulcrum, which is provided with snail road wallboard; The shape of described snail road wallboard is matched with expansion helical face, and is provided with snail road restoring board at the opposite side of described fulcrum.Described snail road wallboard is expansion helical faces such as Archimedes spiral, and snail road restoring board can be a plane of keeping out the wind, and both can adopt plastic or other material integral body to make; Described fulcrum one end is fixed on the spiral case, and the other end is fixed on the casing.

Be arc surface between described expansion helical face and the curved guiding surface, and the radius of curvature of this arc surface is launched the terminal gradually to the middle part increase that launches the helical face of helical face from this.For example, the process transition cambered surface that terminal radius of curvature can be several millimeters that rises of launching the helical face increases to about 50mm gradually.

Under normal conditions, described curved guiding surface also need not wind is guided axially (with the angle of axial direction be zero), can it be arranged to a certain suitable angle with suiting measures to local conditions.For example, be advisable with 30 °-60 ° at the tangent line of described curved guiding surface air opening end and the angle of axial line, and join with the slope air course of identical angle.

Therefore, the utlity model has following characteristics: 1. rational in infrastructure, can be simultaneously axially air-out from a plurality of air channels independently, can keep radially air-out again, be beneficial to through electric heating element evenly, heat efficiently produce the warm braw of the mitigation of several symmetric arrangement; 2. owing to having on the spiral case of exhaust port radially, be provided with movable structures such as snail road wallboard dexterously, make it worm gear in the conversion of forward and reverse rotation, all can keep launching complete sum operation efficient of helical face voluntarily; 3. the unique design of Archimedes spiral face comparatively intactly in the two or more dislocation types of spiral case structure of arranging and the 1/N circumference range, improved the overall efficiency of blower fan greatly, usually the utility model is under close blast situation together, and its total air output is about 80% of common blower fan; 4. the warm-air drier that uses blower fan described in the utility model to make also has compact structure, and windage is little, the thermal efficiency is higher, and can be aided with other heating illuminating device, and both meet dwelling house and decorateed the design trend, be again the desirable substitute products that a kind of energy substitutes infrared bulb or various heating devices.

Accompanying drawing 1 is that the utility model is arranged on the structural representation on a kind of warm-air drier;

Accompanying drawing 2 is a kind of plan structure schematic representation of the present utility model.

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment: described spiral case 3 is that the expansion helical face 31 and the upper volute face of dislocation constitute each other by two, described expansion helical face 31 adopts Archimedes spiral, and on its second half section, be provided with a perpendicular curved guiding surface 6, be arc surface 20 between the two, and the radius of curvature of this arc surface increases to 50mm to the middle part of launching the helical face gradually from the technology circular arc of these expansion helical face 31 origin or beginnings, is contracted to technology circular arc degree to the end that launches the helical face gradually again.These two curved guiding surfaces and above-mentioned many structures adopt injection moulding integral body to make.Worm gear 7 is arranged at the middle part of spiral case 3, and is driven by the motor 15 of being located at the housing outer end.Because the side on spiral case 3 is provided with exhaust port 18 radially, destroyed the integrity of A Shi helical face, make it to influence its air-out blast, air quantity.In order to guarantee the integrity of A Shi helical face, be provided with fulcrum 5 in a side of launching helical face 31 and exhaust port 18 boundaries, which is provided with snail road wallboard 41; The shape of described snail road wallboard 41 with launch helical face 31 matched (shape that is snail road wallboard 41 matches with launching helical face 31, and both level and smooth fairing are linked to each other), and be provided with snail road restoring board 42 at the opposite side of described fulcrum 5.

The casing 2 of heating device by screw fixings on a side of spiral case 3.The exhaust outlet of being located at slope air course 9 and curved guiding surface 6 in the casing 2 connects.And at the other porcelain lamp sockets 14 that are provided with of two slope air courses 9, on be equipped with light lamp 16 and infrared bulb 17; Heater element 13 is installed in the casing 2 of heating device by fixing frame 13.

When the driven by motor worm gear is rotated counterclockwise, air forms the centrifugal wind that rotatablely moves between two Archimedes spiral faces at the 180 ° of angles that misplace each other and worm gear, and by curved guiding surface 6 gradually wind direction is directed at axial angle less than the skew wind of 45, again through tangent and the slope air course 9 that is connected with it, blow through heater element 10, warm braw from the air grid of face shield 11 fiducial axis to blowing out.Meanwhile, this wind is just blowing on the snail road restoring board 42 of the opposite side that is arranged on described fulcrum 5, makes it under the effect of wind-force, with snail road wallboard 41 closures, makes this expansion helical face fairing, complete.When the driven by motor worm gear turned clockwise, air formed the wind of clockwise rotation between two Archimedes spiral faces and worm gear, and snail road wallboard 41 is pressed in this wind front, and making it is that the axle rotation is opened with fulcrum 5.Wind promptly blows out from exhaust port 18, realizes air draft effectively.

Claims

1. the blower fan of axial type dislocation multiple exit spiral case, comprise spiral case and exhaust outlet provided thereon, it is characterized in that on described spiral case (3), being provided with N axially exhaust outlet (8), and in the interval of its 360 °/N, be provided with the expansion helical face (31) that the N section misplaces each other; Wherein, described dislocation is that an inboard of launching helical face end is provided with the starting point that another launches the helical face.

2. the blower fan of axial type according to claim 1 dislocation multiple exit spiral case is characterized in that described N=2, promptly is symmetrically arranged with two axial exhaust outlets (8), and is provided with two sections expansion helical faces (31) of dislocation each other in 180 ° the interval betwixt; Wherein, described dislocation is that an inboard of launching helical face end is provided with the starting point that another launches the helical face.

3. the blower fan of axial type according to claim 1 dislocation multiple exit spiral case is characterized in that described N=3, promptly is symmetrically arranged with three axial exhaust outlets (8), and is provided with three sections expansion helical faces (31) of dislocation each other in 120 ° the interval betwixt; Wherein, described dislocation is that an inboard of launching helical face end is provided with the starting point that another launches the helical face.

4. according to the blower fan of claim 1 or 2 or 3 described axial type dislocation multiple exit spiral cases, it is characterized in that described expansion helical face (31) is an Archimedes spiral, and on the second half section of every section Archimedes spiral face, be provided with a perpendicular curved guiding surface (6).

5. according to the blower fan of claim 1 or 2 or 3 described axial type dislocation multiple exit spiral cases, it is characterized in that being provided with fulcrum (5), which is provided with snail road wallboard (41) in described expansion helical face (31) and the side that exhaust port (18) has a common boundary; The shape of described snail road wallboard (41) is matched with expansion helical face (31), and is provided with snail road restoring board (42) at the opposite side of described fulcrum (5).

6. the blower fan of axial type dislocation multiple exit spiral case according to claim 4 is characterized in that being provided with fulcrum (5) in described expansion helical face (31) and the side that exhaust port (18) has a common boundary, and which is provided with snail road wallboard (41); The shape of described snail road wallboard (41) is matched with expansion helical face (31), and is provided with snail road restoring board (42) at the opposite side of described fulcrum (5).

7. according to the blower fan of claim 1 or 2 or 3 described axial type dislocation multiple exit spiral cases, it is characterized in that being arc surface (20) between described expansion helical face (31) and the curved guiding surface (6), and the radius of curvature of this arc surface is launched the terminal gradually to the middle part increase that launches the helical face of helical face (31) from this.

8. the blower fan of axial type dislocation multiple exit spiral case according to claim 4, it is characterized in that being arc surface (20) between described expansion helical face (31) and the curved guiding surface (6), and the radius of curvature of this arc surface is launched the terminal gradually to the middle part increase that launches the helical face of helical face (31) from this.

9. the blower fan of axial type dislocation multiple exit spiral case according to claim 5, it is characterized in that being arc surface (20) between described expansion helical face (31) and the curved guiding surface (6), and the radius of curvature of this arc surface is launched the terminal gradually to the middle part increase that launches the helical face of helical face (31) from this.

10. according to the blower fan of claim 1 or 2 or 3 described axial type dislocation multiple exit spiral cases, it is characterized in that being advisable with 30 °-60 °, and join with the slope air course (9) of identical angle at the tangent line of described curved guiding surface (6) air opening end and the angle 2 of axial line.