CN103629086A

CN103629086A - Fan

Info

Publication number: CN103629086A
Application number: CN201210503962.XA
Authority: CN
Inventors: 任文华
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-21
Filing date: 2012-12-02
Publication date: 2014-03-12

Abstract

A fan comprises a nozzle. The nozzle comprises a first inner channel, a second outer channel, an air discharging port, a first casing with an opening and a second casing with the inner lateral surface. The front end of the first casing is connected with the front end of the second casing, the rear end of the first casing is in contact with the inner lateral surface of the second casing, and air flow can enter the second inner channel from the first inner channel. The fan has the advantages of being stable in structure and the like. In addition, noise is small.

Description

Fan

Technical field

The present invention relates to a kind of fan.Especially, but not in exclusive manner, the present invention relates to a kind of domestic fan, as family expenses desk fan, for increasing air circulation and the Air Flow in indoor, office and other environment.

Background technique

Traditional domestic fan generally includes motor and by motor, is driven one group of blade or the impeller be rotated.This group blade is usually located in cage, and this cage allows air stream to pass, yet but stops human body to touch the blade of rotation.But in some cases, this kind of fan also exists the danger that human body touches this group rotation blade.

The Chinese patent application that on May 6th, 2009, publication number was CN101424279A (application number: 200810177844.8) disclose a kind of fan that does not expose fan blade, this kind of fan comprises nozzle and for generation of the device of the air-flow by nozzle, described device comprises impeller chimney, be positioned at the impeller of impeller chimney and the motor of drives impeller rotation work, described nozzle comprises for accepting the inner passage of air-flow, for launching the relief opening of air-flow, and the first housing and the second housing that limit inner passage and relief opening, described nozzle limits a through hole, air from described nozzle outside is entrainmented by described through hole by the air-flow of launching from described relief opening.This kind of fan provides comparatively uniform air-flow and improved the Security of using.But inner passage and the relief opening of this kind of fan are easily out of shape, from the noise of described device, easily by inner passage, from relief opening, export in addition, thereby affect the performance of fan.

Summary of the invention

The present invention is intended to overcome above-mentioned defect of the prior art.The object of the invention is to provide-fan of kind of stabilized structure; Another object of the present invention is the fan that will provide a kind of noise less.

In order to achieve the above object, the technical solution used in the present invention is: a kind of fan, it is characterized in that, and described fan comprises nozzle and for generation of the device of the air-flow by described nozzle; Described nozzle comprises inner passage for accepting air-flow, for launching the relief opening of air-flow, the first housing that limits described inner passage and described relief opening and the second housing; Described inner passage comprises the first inner passage and the second inner passage; Described the first housing comprises front end, rear end and a plurality of opening, and described the second housing comprises front end, rear end, inner surface and outer surface; The front end of described the first housing is connected with the front end of described the second housing, the rear end of described the first housing has at least part to contact with the inner surface of described the second housing, and air-flow can enter described the second inner passage from described the first inner passage by described opening.

Preferably, the rear end of described the first housing all contacts with the inner surface of described the second housing.

Advantageously, this kind of fan do not need the fan blade exposing just can provide air-flow for user; Because the front end of the first housing is connected with the front end of the second housing, the rear end of the first housing contacts with the inner surface of the second housing, the structure of its nozzle is very firm, and its assembling is also very convenient, is conducive to the manufacture efficiency that reduces the distortion of inner passage and relief opening and improve fan; Described a plurality of openings can be decayed from the noise of described device in addition, are conducive to reduce the noise of exporting from relief opening.

Described opening comprises perforation and breach.Described perforation can have various shape, and described perforation comprises the perforation of circular perforation, oval-shaped perforation, rectangle and trapezoidal perforation etc.; Described breach also can have various shape, and described breach comprises the breach of rectangle, semicircular breach and half elliptic breach etc.; The bore of described opening is usually located between 3mm to 50mm, is preferably located between 5mm to 35mm; The quantity of described opening is conventionally between 10 to 1000, preferably between 15 to 100.

In order to improve the steadiness of nozzle, the rear end of described the first housing can fix with the inner surface of described the second housing.In a preferred embodiment, the rear end of the first housing is fixed by the inner surface of binder and the second housing.

Distance between the rear end of described the first housing and the outlet of described relief opening is usually located between 5mm to 40mm, is preferably located between 10mm to 35mm.

In order conveniently to realize the rear end of the first housing, contact with the inner surface of the second housing, described the second housing can also comprise the step that is positioned at the second housing inner side, and the rear end of the first housing is contacted with the surface of the second housing step.

Described nozzle can have various shape, and described nozzle can comprise round nozzle, oval nozzle, patty nozzle, and described nozzle also can comprise the ring nozzle that limits a through hole.In a preferred embodiment, described nozzle limits a through hole, from the air of nozzle outside, can be entrainmented by described through hole by the air-flow of launching from relief opening.

Described relief opening is preferably slot-shaped relief opening, described relief opening at the width in its outlet port conventionally between 0.5mm to 5mm; The Way out of described relief opening and the angle of axial direction are less than 20 ° conventionally, are preferably less than 10 °.

The described device for generation of the air-flow by nozzle comprises impeller chimney, is positioned at the impeller of impeller chimney and the motor that drives impeller is rotated; Described motor can be DC Brushless Motor, can be also alternating current motor; Described impeller can be horizontal impeller, can be mixed flow impeller, can also be other impeller.

In a preferred embodiment, described fan comprises pedestal and is arranged on the nozzle on pedestal, this pedestal comprises shell and is positioned at the device for generation of the air-flow by described nozzle of shell, this device comprises impeller chimney, impeller and motor, this pedestal is roughly cylindrical, the diameter of this pedestal is about 145mm, and the height of this pedestal is about 210mm, and the rotating speed of this impeller is between 2500rpm to 9000rpm.

Described fan can be desk fan, can be wall fan, can be ceiling fan, can be flooring fan, can also be the fan of other type.

Accompanying drawing explanation

Figure l is the schematic diagram of fan of the present invention.

Fig. 2 is the side view of the fan shown in figure l.

Fig. 3 is the sectional view intercepting along A-A line of scheming the fan shown in l.

Fig. 4 has shown an alternative embodiment of the invention.

Embodiment

Figure l is that Fig. 2 is the side view of fan shown in Fig. 1 from the schematic diagram of the fan of the present invention of device forward observation, and Fig. 3 has shown the internal structure of fan shown in Fig. 1.From Fig. 1 to Fig. 3, can find out, this kind of fan comprises pedestal 2 and is arranged on the nozzle 1 on pedestal 2; Pedestal 2 comprises Base body 18 and is positioned at the base portion 19 below Base body, and Base body 18 has

shell

23,24, is provided with air inlet 20 on shell 24, the form that air inlet 20 is grid hole; Base body 18 comprises motor 29, lower standing part 31, upper standing part 32 and the cable 25 that is positioned at the impeller chimney 27 of

shell

23,24, the impeller 28 that is positioned at impeller chimney, drives impeller 28 rotary works; Impeller 28 comprise general conical wheel hub, be connected to a plurality of blades on wheel hub and be connected to the guard shield 30 of the outer ledge of a plurality of blades; Lower standing part 31 and upper standing part 32 are for fixing motor 29, and upper standing part 32 is also fixing with impeller chimney 27; External power line with for controlling the power control 26 of motor 29 work, be electrically connected to, power control 26 is electrically connected to motor 29 by cable 25.

From Fig. 1 to Fig. 3, can also see, nozzle 1 is annular nozzle, this nozzle defines a through hole 17, the width of its nozzle is about 300mm, the height of its nozzle is about 305mm, and nozzle 1 comprises the first inner passage 3, the second inner passage 4, relief opening 5, limits the first housing 6 and second housing 7 of inner passage 3,4 and relief opening 5; Relief opening 5 is slot-shaped relief opening, and the width in its outlet port is about 1mm; The first housing 6 comprises front end 8, rear end 9, inner surface 13 and outer surface 14 and a plurality of opening 10; Opening 10 is for passing through the rectangle perforation of the first housing, and this perforation is positioned near the first housing rear end 9, and the length of side of this perforation is respectively 6mm and 10mm; The second housing 7 comprises front end 11, rear end 12, inner surface 15 and outer surface 16; The front end 8 of the first housing is fixedly connected with the front end 11 of the second housing, and the rear end 9 of the first housing is surrounded and contacts with the inner surface 15 of the second housing by the second housing 7, and air-flow can enter the second inner passage 4 from the first inner passage 3 by opening 10.

Because the front end 8 of the first housing and the front end 11 of the second housing are fixedly connected with, the rear end 9 of the first housing contacts with the inner surface 15 of the second housing, makes like this nozzle 1 have firm structure, and its inner passage 3,4 and relief opening 5 are difficult for deforming; And opening 10 is as the passway of the air-flow between the first inner passage 3 and the second inner passage 4, the noise from pedestal 2 is had to attenuation.

In the present embodiment, Base body 18 relatively base portion 19 swings on horizontal plane, Base body 18 comprises top base main body 21 and bottom base main body 22, top base main body 21 can slide into oblique position with respect to bottom base main body 22, and this fan can be on horizontal plane or the orientation of vertical plane adjusted air-out like this.

During this fan work, be positioned at motor 29 drives impeller 28 rotary works of pedestal 2, air can be drawn into from the air inlet 20 being positioned at Base body 18, enter in the inner passage 3,4 that air in Base body 18 is admitted to nozzle 1 after boosting and be deflated mouthfuls 5 and launch, from the air of nozzle outside, being deflated mouthful 5 air-flows of launching entrainments and passes through through hole 17, the total air flow that the air-flow being launched and the air-flow formation of being entrainmented penetrate forward from nozzle 1.

Fig. 4 has shown an alternative embodiment of the invention.From Fig. 4, easily find out, the present embodiment is similar to first embodiment shown in Fig. 3, and just the type of opening 10 is different.In the present embodiment, the breach that opening 10 is rectangle; And in first embodiment, the perforation that opening 10 is rectangle.

Although shown and described and thought at present preferred embodiments of the invention, apparent, those skilled in the art can carry out various changes and improvements, and does not deviate from scope of the present invention as defined in appended claims.

Claims

1. a fan, is characterized in that, described fan comprises nozzle and for generation of the device of the air-flow by described nozzle; Described nozzle comprises inner passage for accepting air-flow, for launching the relief opening of air-flow, the first housing that limits described inner passage and described relief opening and the second housing; Described inner passage comprises the first inner passage and the second inner passage; Described the first housing comprises front end, rear end and a plurality of opening, and described the second housing comprises front end, rear end, inner surface and outer surface; The front end of described the first housing is connected with the front end of described the second housing, the rear end of described the first housing has at least part to contact with the inner surface of described the second housing, and air-flow can enter described the second inner passage from described the first inner passage by described opening.

2. fan as claimed in claim 1, is characterized in that, described opening comprises near the perforation being positioned at described the first housing rear end.

3. fan as claimed in claim 1, is characterized in that, described opening comprises near the breach being positioned at described the first housing rear end.

4. the fan as described in one of claims 1 to 3, is characterized in that, the rear end of described the first housing has at least part to fix with the inner surface of described the second housing.

5. the fan as described in one of claims 1 to 3, is characterized in that, the distance between the rear end of described the first housing and the outlet of described relief opening is between 10mm to 35mm.

6. the fan as described in one of claims 1 to 3, is characterized in that, the bore of described opening is between 5mm to 35mm.

7. the fan as described in one of claims 1 to 3, is characterized in that, described nozzle limits a through hole, from the air of nozzle outside, by the air-flow of launching from relief opening, is entrainmented by described through hole.

8. the fan as described in one of claims 1 to 3, is characterized in that, described the second housing also comprises the step that is positioned at described the second housing inner side, and the rear end of described the first housing has at least part to contact with the surface of described step.

9. fan as claimed in claim 2, is characterized in that, described perforation comprises circular perforation.

10. fan as claimed in claim 2, is characterized in that, described perforation comprises the perforation of rectangle.