CN202182069U

CN202182069U - Bladeless fan

Info

Publication number: CN202182069U
Application number: CN2011202329250U
Authority: CN
Inventors: 李耀强
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-07-04
Filing date: 2011-07-04
Publication date: 2012-04-04
Anticipated expiration: 2021-07-04

Abstract

The utility model relates to a bladeless fan which consists of a base and an air flow injection device arranged above the base, wherein an air inlet is arranged on a shell of the base, the air flow injection device is in a hollow annular structure, the hollow part is a first air flow channel, and a second annular air flow channel and an annular exhaust port are arranged on the air flow injection device. In the utility model, besides the bladeless fan is provided with the first air flow channel like a channel of a common bladeless fan, the bladeless fan is also provided with the second air flow channel, so as to effectively suck air behind the fan and air on the side surface and ensure that the air flow blown out by the fan can be larger, thereby having remarkable effect.

Description

No blade fan

Technical field

The utility model relates to a kind of fan, belongs to the optimisation technique of fan.

Background technique

Existing fan is through the rotation of driven by motor blade; Through blade air pressurized is quickened to blow to then the user; Advantage is to bring the sensation of blowing to the user; But there are following 4 deficiencies: the one, the velocity of blade of rotation is very high, runs into because of carelessness and can damage, though most fan adopts outer cover to surround blade to reduce danger; The 2nd, blade and outer cover are difficult to clean; The 3rd, also can produce throat sound in the blade rotary course, bring interference to the user; The 4th, because air-flow changes when passing blade surface, the wind of producing by boasting is inhomogeneous, and the user can feel a burst of high wind that similar pulse is such.

Application number be 200810177843.3 be to disclose a kind of fan in 200810177844.8 the patent document with application number; Form by pedestal and the annular row gas port that is installed on the pedestal; Be provided with inner passage and the relief opening of reception in the annular row gas port from the air-flow in the pedestal; The fan air outside is deflated the air-flow suction that mouth ejects, and the air-flow that blows to the user is increased.The advantage of this design is not have exposed blade; Solve blade and be difficult to clean and have the deficiency of potential safety hazard, and reduced and fallen sound, had stronger visual impact; The speed uniform airflow that ejects through relief opening; Utilize Coanda effect to change the flow direction of relief opening air-out well, and drive the fan air outside and flow, make the user experience comparatively stable blowing effect to the user.Deficiency be can only the suction fan rear air flow but air that can not the suction fan side to the user.

Therefore, need to seek a kind of no blade fan, air that not only can the suction fan rear, air that can also the suction fan side makes the air that flows to the user more, and just air quantity is more.

Summary of the invention

The purpose of the utility model provides a kind of no blade fan, air that not only can the suction fan rear, air flow user that can also the suction fan side.

The technological scheme of the utility model is: no blade fan is made up of pedestal 1 and the air flow jetting device 2 that is positioned at pedestal 1 top; The shell of said pedestal 1 is provided with suction port 11; Pedestal 1 positioned inside motor 12, the impeller 13 that drives by motor 12, air passageways 14, described air flow jetting device 2 is the loop configuration of hollow; Hollow partly is first air-flow path 21, on air flow jetting device 2, is provided with second air-flow path 22 of annular and the relief opening 23 of annular.

The suction port of described second air-flow path 22 is positioned at the outer wall of air flow jetting device 2, and the air outlet is positioned at the inwall of air flow jetting device 2.

Described second air-flow path 22 is separated through demarcation strip 24 and air flue 25, and described demarcation strip 24 is connected through the puff prot 27 of connecting tendon 26 with annular.

Said air flue 25 is the air-flow paths that are positioned at air flow jetting device 2 inside, and being linked in sequence by outer wall 28, demarcation strip 24 and inwall 29 forms.

One end of said outer wall 28 is connected with demarcation strip 24, and the other end is crooked and wrap up the end of inwall 29 to the direction of inwall 29; One end of said inwall 29 is connected with demarcation strip 24, and the other end curves inwardly, and bent part is thickeied end gradually and is water droplet shape; The gap is left in the inboard of the end of described inwall 29 and outer wall 28, forms the relief opening 23 that is communicated with air flue 25.

Through hole and air passageways 14 UNICOMs of pedestal 1 of said air flue 25 through being positioned at air flow jetting device 2 belows.

The beneficial effect of the utility model is:

1, except that having first air-flow path the same, also be provided with second air-flow path with common no blade fan, the air of suction fan fan and side effectively, the air quantity that fan is blown out is bigger, more remarkable effect.

2, formed the coanda surface around the relief opening, steering flow flows to.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.

Fig. 1 is the main TV structure partial sectional view of the utility model;

Fig. 2 is that partial sectional view is looked on the left side of the utility model;

Fig. 3 is the partial enlarged drawing of Fig. 2;

Fig. 4 is the partial sectional view of overlooking of the utility model;

Fig. 5 is an embodiment's of the utility model a External view.

Among the figure 1, pedestal, 11, suction port, 12, motor, 13, impeller, 14, air flue; 2, air flow jetting device, 21, first air-flow path, 22, second air-flow path, 23, relief opening, 24, demarcation strip; 25, air flue, 26, connecting tendon, 27, puff prot, 28, outer wall, 29, inwall.

Embodiment

Like Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4; No blade fan is made up of pedestal 1 and the air flow jetting device 2 that is positioned at pedestal 1 top, and the shell of said pedestal 1 is provided with suction port 11, pedestal 1 positioned inside motor 12, by the impeller 13 of motor 12 driven rotary; Air passageways 14; Described air flow jetting device 2 is the loop configuration of hollow, and hollow partly is first air-flow path 21, on air flow jetting device 2, is provided with second air-flow path 22 of annular and the relief opening 23 of annular.Impeller 13 is to be placed in the shell of pedestal 1, helps to suck air and gives supercharging air, blows into air flow jetting device 2 to air then.Air flow jetting device 2 is the loop configuration of hollow, also can be square or oval, as shown in Figure 5, as long as the axis symmetry.

The intake grill of described second air-flow path 22 is positioned at the outer wall of air flow jetting device 2, and exhaust outlet is positioned at the inwall of air flow jetting device 2.Make the outer air of air flow jetting device 2 outer walls, can pass through second air-flow path 22, import in first air-flow path 21.

Described second air-flow path 22 is separated through demarcation strip 24 and air flue 25, and described demarcation strip 24 is connected with ring jet mouth 27 through connecting tendon 26.

Said air flue 25 is the air-flow paths that are positioned at air flow jetting device 2 inside, and being linked in sequence by outer wall 28, demarcation strip 24 and inwall 29 forms.Therefore, taking under the situation in equal space, the air flue 25 of the utility model is than the airway constriction of other no blade fans, so air pressure is bigger, jet power is stronger.

One end of said outer wall 28 is connected with demarcation strip 24, and the other end is crooked and wrap up the end of inwall 29 to the direction of inwall 29.One end of said inwall 29 is connected with demarcation strip 24; The other end curves inwardly, and bent part is thickeied end gradually and is water droplet shape, that is to say; The end of outer wall 29 is the circular arc bending towards the direction of a side direction outer wall 28 of air flue 25; High-pressure air in the air flue 25 can be flowed out swimmingly, through relief opening 23 ejections along the inboard camber line of inwall 29.

The gap is left in the inboard of the end of described inwall 29 and outer wall 28, forms the relief opening 23 of the annular that is communicated with air flue 25.

The air-flow that the utility model blows to the user comprises three parts, and first partly is the main air flow from 23 ejections of ring jet mouth; Second partly is main air flow when flowing, and attracts the air-flow at fan rear to get into first air-flow path 21; The 3rd partly is that the main air flow high speed flow is when crossing the exhaust outlet of second air-flow path 22; Can produce venturi-effect; Cross second air-flow path 22 to the air communication of fan side and entrainment in entering first air-flow path 21, above-mentioned three strands of air-flows are merged into one more powerful air-flow.

During work, motor 12 impeller 12 rotations in the pedestal 1 suck air outside from suction port, get into air passageways 14 through the pressurization back, get into air flue 25 through the through hole that is located at air flow jetting device 2 belows again, spray and go out from annular row gas port 23 at last.Because inwall 29 curves inwardly towards an end of annular row gas port 23, bent part is more thickeied and is water droplet shape, makes the side line bar smoothness towards air flue, and like this, the air-flows in the air flue 25 will flow toward annular row gas port 23 swimmingly, from 23 ejections of annular row gas port.Because inwall 29 curves inwardly, therefore, the surface of the inwall 29 around annular row gas port 23 forms the coanda surface; Make the air-flow of relief opening 23 ejections change the flow direction; Surface along inwall 29 blows to the user, and entrainments the air that is positioned at air flow jetting device 2 rears and blow to the user through first air-flow path 21, simultaneously; Because the exhaust outlet of second air-flow path 22 is positioned at the inwall of air flow jetting device 2; When the air flow stream that ejects from the annular row gas port is crossed this position,, can produce low pressure area at the exhaust outlet of second air-flow path 22 according to venturi-effect; Attract the outer air of air flow jetting device 2 outer walls to flow into second air-flow path 22, import first air-flow path 21 again and blow to the user.

Therefore; The no blade fan of the utility model, entrainment the air-flow that gets into first air-flow path 21 than application number be 200810177843.3 with application number be that disclosed a kind of fan is big in 200810177844.8 the patent document, therefore; The no blade fan of the utility model; Under comparable size, power, can produce more powerful air-flow, just the bigger effect of wind is better.

The foregoing description only is to be used for the purposes of interpretation the utility model; And be not to be the restriction to the utility model, those skilled in the art are in the essential scope of the utility model; Make various variations or alternative, also should belong to the protection category of the utility model.

Claims

1. there is not blade fan; Form by pedestal (1) and the air flow jetting device (2) that is positioned at pedestal (1) top; The shell of said pedestal (1) is provided with suction port (11); Pedestal (1) positioned inside motor (12), the impeller (13) that drives by motor (12), air passageways (14), described air flow jetting device (2) is the loop configuration of hollow; Hollow partly is first air-flow path (21), it is characterized in that: on air flow jetting device (2), be provided with second air-flow path (22) of annular and the relief opening (23) of annular.

2. no blade fan according to claim 1 is characterized in that: the intake grill of described second air-flow path (22) is positioned at the outer wall of air flow jetting device (2), and exhaust outlet is positioned at the inwall of air flow jetting device (2).

3. no blade fan according to claim 2 is characterized in that: described second air-flow path (22) is separated through demarcation strip (24) and air flue (25), and described demarcation strip (24) is connected through the puff prot (27) of connecting tendon (26) with annular.

4. no blade fan according to claim 3 is characterized in that: said air flue (25) is to be positioned at the inner air-flow path of air flow jetting device (2), and being linked in sequence by outer wall (28), demarcation strip (24) and inwall (29) forms.

5. no blade fan according to claim 4 is characterized in that: an end of said outer wall (28) is connected with demarcation strip (24), and the other end is crooked and wrap up the end of inwall (29) to the direction of inwall (29); One end of said inwall (29) is connected with demarcation strip (24), and the other end curves inwardly, and bent part is thickeied end gradually and is water droplet shape; The gap is left in the inboard of the end of described inwall (29) and outer wall (28), forms the relief opening (23) that is communicated with air flue (25).

6. no blade fan according to claim 5 is characterized in that: through hole and air passageways (14) UNICOM of pedestal (1) of said air flue (25) through being positioned at air flow jetting device (2) below.