CN102937080A

CN102937080A - Bladeless fan

Info

Publication number: CN102937080A
Application number: CN 201210467208
Authority: CN
Inventors: 任文华
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-19
Filing date: 2012-11-19
Publication date: 2013-02-20

Abstract

A bladeless fan comprises a spray nozzle and a generation device for generating air flow passing through the spray nozzle. The spray nozzle comprises a cavity and a venting hole, the generation device comprises an impeller cover, impellers arranged in the impeller cover, a motor for driving the impellers to work, a fixing device for fixing the motor, and a cable connected with the motor, wherein the fixing device comprises a first fixing piece connected with the motor and a plurality of connecting rods, one end of each connecting rod is connected with the first fixing piece, and the other end of each connecting rod is connected with the impeller cover. The bladeless fan has the advantages of being low in air flow transmission loss, simple in structure and the like.

Description

Without blade 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 the 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 is driven one group of blade or the impeller be rotated by motor.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 September 8th, 2010, publication number was CN 101825105A (application number: 201010130001.X) disclose a kind of fan that does not expose fan blade, this kind of fan comprises pedestal and is arranged on the nozzle on pedestal, this pedestal comprises frame and is positioned at the generation device for generation of the air-flow by nozzle of frame, described generation device comprises the impeller chimney with air intlet and air outlet slit, be positioned at the impeller of impeller chimney, the motor of drives impeller rotation work and the diffuser that is positioned at impeller chimney, described nozzle comprises for the inner passage of the reception of the air outlet slit from impeller chimney air-flow with for launching the relief opening of air-flow, described nozzle limits the opening that is positioned at central part, be transported in cavity and be deflated a mouthful institute from the air-flow of pedestal and spray.This kind of fan provides comparatively uniform air-flow and improved the Security of using.But the air-flow transmission loss of this kind of fan is larger, haves much room for improvement or optimizes.

Summary of the invention

The present invention aims to provide a kind of improved fan to overcome above-mentioned defect of the prior art.The objective of the invention is to provide-kind of the less fan of air-flow transmission loss; 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 without blade fan, it is characterized in that, describedly without blade fan, comprise nozzle and for generation of the generation device of the air-flow by described nozzle, described nozzle comprises cavity for receiving air-flow and for launching the relief opening of air-flow, described generation device comprises the impeller chimney with air intlet and air outlet slit, be positioned at the impeller of described impeller chimney, for driving the motor of described wheel rotation work, be positioned at the fixing device and the cable be connected with described motor by described fixing device for fixing described motor in described impeller downstream, wherein, described fixing device comprises the first fixed block and the Duo Gen connecting rod be connected with described motor, one end of described connecting rod is connected with described the first fixed block, the other end of described connecting rod is connected with described impeller chimney.

Advantageously, this kind do not need to expose fan blade without blade fan and just can produce air stream and form cooling effect; Because the fixing device that is positioned at the impeller downstream has larger air-out passage, the inhibition of the air-flow that impeller is exported is less, is conducive to reduce the transmission loss of air-flow; Fixing device is simple in structure in addition, is conducive to improve the manufacture efficiency of fan.

The quantity of described connecting rod is usually between 2 to 9, preferably between 4 to 8; The shape of described connecting rod easily adopts air-flow is hindered to few shape, and the shape of its connecting rod cross section comprises ellipse, round rectangle and circle etc.; For the ease of the cable be connected with motor is set, preferably on connecting rod, be provided for placing hole or the cavity of cable.

In order to strengthen the stable degree of described fixing device, described fixing device can also comprise the second fixed block be connected between adjacent two connecting rods.Preferably, between any two adjacent connecting rods, second fixed block all is set; The shape of the second fixed block comprises the part annular.

Being connected between described connecting rod and described impeller chimney, can adopt screw, binder etc. to carry out, and preferably adopts screw to carry out.

The first fixed block is fixed with motor or is connected; The first fixed block generally includes upper part and lower part, and preferably, its motor is located thereon between face portion and lower part, and its upper part and lower part adopt screw to be fixed usually.

Described fixing device adopts plastics manufacture usually; Preferably, the first fixed block comprises upper part and lower part, and the upper part of the first fixed block, many connecting rods and the second fixed block adopt the integrated manufacture of mould, is conducive to like this improve the intensity of fixing device and manufactures efficiency.

Described cavity can comprise the combination of toroidal cavity, toroidal cavity and pancake cavity.In a preferred embodiment, described cavity comprises toroidal cavity and pancake cavity, and described toroidal cavity arranges around described pancake cavity, and the surrounding of described pancake cavity all is communicated with described toroidal cavity.

Preferably, described cavity comprises toroidal cavity and pancake cavity, described toroidal cavity arranges around described pancake cavity, the surrounding of described pancake cavity all is communicated with described toroidal cavity, and described pancake cavity and described toroidal cavity all have the degree of depth along axial direction, the degree of depth of described pancake cavity is less than the degree of depth of described toroidal cavity; The cavity that this kind formed by toroidal cavity and pancake cavity combinations, the flow resistance of its air-flow in cavity is less, is conducive to reduce the flow loss of air-flow; In addition, the degree of depth of pancake cavity is less than the degree of depth of described toroidal cavity, be conducive to make nozzle-integrated attractive in appearance, preferably, the degree of depth of pancake cavity be less than toroidal cavity the degree of depth 50%; The degree of depth of described toroidal cavity is usually between 50mm to 150mm, preferably between 50mm to 120mm; The degree of depth of described pancake cavity is usually between 5mm to 80mm, preferably between 5mm to 50mm; The average thickness of the chamber wall of described toroidal cavity or the chamber wall of pancake cavity is usually between 1mm to 5mm, preferably between 1mm to 3mm.

The relief opening of nozzle is preferably slot-shaped relief opening, its relief opening at the width in outlet port usually between 0.5mm to 10mm, preferably between 1mm to 5mm.

Described generation device is for generation of the air-flow by nozzle, and described generation device can be arranged in the cavity of nozzle, also can partly be arranged in the cavity of nozzle, also can be positioned at the pedestal of the fan with pedestal, can also be positioned at other place.

The motor of described generation device can be alternating current motor, can be also DC Brushless Motor; The impeller of described generation device can be centrifugal impeller, can be also mixed flow impeller, is preferably mixed flow impeller.

In a preferred embodiment, fan comprises pedestal and is arranged on the nozzle on pedestal, this pedestal comprises shell and is positioned at the generation device of shell, described generation device comprises impeller chimney, impeller, motor, fixing device and the cable be connected with 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.

In order to reduce the noise of the air-flow that nozzle exports, the noise reduction member preferably is set on the first fixed block.Described noise reduction member comprises acoustic foam, and acoustic foam comprises sponge and glass wool; Described noise reduction member comprises the noise reduction layer, and wherein, the thickness of noise reduction layer is between 2mm to 40mm; Described noise reduction member can be various shape, and preferably, described noise reduction member is patty.

Described can be desk fan without blade fan, can be wall fan, can be ceiling fan, can be flooring fan, can also be the fan of other type.

The accompanying drawing explanation

Figure l is the front schematic view of fan of the present invention.

Fig. 2 is the side view of fan shown in Fig. 1.

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

Fig. 4 has showed the schematic diagram that the fixing device in Fig. 3 is amplified.

Fig. 5 has showed the another kind of replacing structure of the fixing device shown in Fig. 4.

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 9 and is positioned at the base portion 10 below Base body, and Base body 9 has

shell

24,25, is provided with air inlet 11 on shell 25, the form that air inlet 11 is grid hole; Base body 9 comprises motor 7, fixing device 13 and the cable 14 of the impeller chimney 8 that is positioned at

shell

24,25, the impeller 6 that is positioned at impeller chimney, drives impeller 6 rotary works; Impeller chimney 8 has air intlet 26 and air outlet slit 27; Impeller 6 comprise general conical wheel hub, be connected to a plurality of blades on wheel hub and be connected to the guard shield 15 of the outer ledge of a plurality of blades; Fixing device 13 is for fixing motor 7; External power line is electrically connected to the power control 17 for controlling motor 7 work, and power control 17 is electrically connected to motor 7 by cable 14.

From Fig. 1 to Fig. 3, can also see, nozzle 1 comprises annular cavity 4a, disc cavity 4b and a plurality of relief opening 5; Annular cavity 4a and disc cavity 4b be about the axis X symmetry, and annular cavity 4a arranges around disc cavity 4b, and disc cavity 4b 16 all is communicated with annular cavity 4a in edge; Relief opening 5 is positioned at the front end place of annular cavity 4a; The diameter of nozzle 1 is about 300mm, and annular cavity 4a is about 100mm along the depth d 1 of axis X direction, and disc cavity 4b is 30mm along the depth d 2 of axis X direction; Relief opening 5 is slot-shaped relief opening, and the width in its outlet port is about 1mm, between two adjacent slits shape relief openings, has link 12, can limit like this width of relief opening and relative cavity wall is linked together; From Fig. 3, can be clear that, chamber wall 3a, the 3b of annular cavity 4a and chamber wall 18a, the 18b of disc cavity 4b link together, and make nozzle 1 have firm structure.

Referring to Fig. 4, fixing device 13 comprises the first fixed block 20 and four connecting rods 21 that are connected with motor 7, one end of connecting rod 21 is connected with the first fixed block 20, the other end of connecting rod 21 can be connected with impeller chimney 8 by screw, all be provided with the position, hole 28 that can pass through for screw on every connecting rod 21, be provided with hole 23 on a connecting rod therein, this hole is for placing the cable 14 be connected with motor 7; Again in conjunction with Fig. 3, the first fixed block 20 comprises upper part 20a and lower part 20b, motor 7 is between upper part 2a and lower part 20b, and its upper part 2a and lower part 20b adopt screw to fix so that motor 7 and the first fixed block 20 closely are fixed together; From Fig. 4, easily find out, fixing device 13 simple in structure, the passage of its air-out is larger, and the resistance of the air-flow that impeller is exported is less, is conducive to reduce the flow loss of air-flow.

Fig. 5 has showed the another kind of replacing structure of the fixing device 13 shown in Fig. 4.As can be seen from Figure 5, what the fixing device 13 shown in Fig. 5 had increased by four the second fixed block 22, the second fixed blocks 22 with respect to the fixing device 13 shown in Fig. 4 is shaped as the part annular, and these four the second fixed blocks 22 are connected between 4 connecting rods.Generally, 22 one-tenth integral body of connecting rod 21 and the second fixed block are integrated.Obviously, the fixing device shown in Fig. 5 has higher stable degree.

In the present embodiment, Base body 9 base portion 10 is relatively swung, Base body 9 comprises top base main body 9a and bottom base main body 9b, and top base main body 9a can slide into oblique position with respect to bottom base main body 9b, like this fan can be in the horizontal direction or vertical direction regulate the orientation of air-out.

In the present embodiment, the noise reduction member 19 be provided with on the first fixed block 20, noise reduction member 19 is a discoidal spongy layer, the diameter of this spongy layer is that 65mm, thickness are 18mm.Having of noise reduction member 19 is beneficial to the noise that minimizing is exported from nozzle.

When this is worked without blade fan, be positioned at motor 7 drives impeller 6 rotary works of pedestal 2, air can be drawn into by the air inlet 11 from being positioned at Base body 9, the air entered in Base body 9 is admitted in the annular cavity 4a and disc cavity 4b of nozzle 1 after boosting, and be deflated mouthfuls 5 and spray, be deflated mouthful 5 air-flows that spray from the air of nozzle outside and entrainment, the total air flow that the air-flow be ejected and the air-flow formation of being entrainmented penetrate forward from nozzle.

The detailed description that the present invention is not limited to provide above.Those skilled in the art should be understood that deformation program of the present invention.

Claims

1. one kind without blade fan, it is characterized in that, describedly without blade fan, comprise nozzle (1) and for generation of the generation device of the air-flow by described nozzle, described nozzle comprises for receiving the cavity (4a of air-flow, 4b) and the relief opening (5) for launching air-flow, described generation device comprises the impeller chimney (8) of have air intlet (26) and air outlet slit (27), be positioned at the impeller (6) of described impeller chimney, for driving the motor (7) of described wheel rotation work, be positioned at the fixing device (13) and the cable (14) be connected with described motor by described fixing device for fixing described motor in described impeller downstream, wherein, described fixing device comprises the first fixed block (20) and the many connecting rods (21) that are connected with described motor, one end of described connecting rod is connected with described the first fixed block, the other end of described connecting rod is connected with described impeller chimney.

2. as described as claim l without blade fan, it is characterized in that, described fixing device also comprises the second fixed block (22) be connected between adjacent two connecting rods.

3. as described as claim l without blade fan, it is characterized in that the described noise reduction member (19) be arranged on described the first fixed block that also comprises without blade fan.

4. as described as one of claim l to 3 without blade fan, it is characterized in that, describedly without blade fan, also comprise shell (24,25), and described generation device is positioned at described shell.

5. as described as one of claim l to 3 without blade fan, it is characterized in that, the quantity of described connecting rod is between 4 to 8.

6. as described as one of claim l to 3 without blade fan, it is characterized in that, the cross section of described connecting rod is roughly ellipse.

7. as described as one of claim l to 3 without blade fan, it is characterized in that, the cross section of described connecting rod is roughly round rectangle.

8. as described as one of claim l to 3 without blade fan, it is characterized in that, described cable is connected with described motor by a connecting rod in described many connecting rods.

9. as described as one of claim l to 3 without blade fan, it is characterized in that, be provided with the hole (23) for placing described cable on a connecting rod in described many connecting rods.

10. as described as one of claim l to 3 without blade fan, it is characterized in that, described cavity comprises toroidal cavity (4a) and pancake cavity (4b), and described toroidal cavity arranges around described pancake cavity, and the surrounding of described pancake cavity all is communicated with described toroidal cavity.