CN201763705U - Fan - Google Patents

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Publication number
CN201763705U
CN201763705U CN2010205483072U CN201020548307U CN201763705U CN 201763705 U CN201763705 U CN 201763705U CN 2010205483072 U CN2010205483072 U CN 2010205483072U CN 201020548307 U CN201020548307 U CN 201020548307U CN 201763705 U CN201763705 U CN 201763705U
Authority
CN
China
Prior art keywords
housing
nozzle
fan
thickness
air
Prior art date
Application number
CN2010205483072U
Other languages
Chinese (zh)
Inventor
任文华
Original Assignee
任文华
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 任文华 filed Critical 任文华
Priority to CN2010205483072U priority Critical patent/CN201763705U/en
Application granted granted Critical
Publication of CN201763705U publication Critical patent/CN201763705U/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/08Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/16Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids

Abstract

The fan relates to a device generating air circulation and airflow, which comprises a base (1) arranged at an air outlet frame (7). The air outlet frame comprises an interior passage and an air outlet (3) through which the high-pressure airflow is ejected. The closed loop of the air outlet frame limits a mouth (4), and the air outside of the fan device is pumped by the airflow ejected from the air outlet through the mouth. The utility model is characterized in that the air outlet frame possesses an outer frame (2) and a plurality of nozzles (6) with bar-shaped exhaust outlet; the nozzle is arranged in the outer frame and is communicated with the outer frame; both the outer frame and the nozzle possess thickness along the axis (X) direction, and the thickness of the outer frame is larger than that of the nozzle. The utility model is capable of providing airflow of a large area in an even speed.

Description

Fan

Technical field

The utility model relates to a kind of fan.Especially, the utility model relates to a kind of device that produces air circulation and air stream in indoor and outdoor surroundings.

Background technique

The Chinese patent application that on May 6th, 2009, publication number was CN 101424278A (application number: 200810177843.3) disclose a kind of fan that is used to produce air stream, this kind fan comprises the outlet frame that is installed on the pedestal, described pedestal holds the member that is used to produce by the high pressure draught of described outlet frame, described outlet frame comprises inner passage and the relief opening that is used to receive from the high pressure draught of described pedestal, high pressure draught is injected by described relief opening, outlet frame with single circular closure loop extends orthogonally basically about axis and limits opening, the air-flow suction that described fan air outside is sprayed from described relief opening by described opening, wherein, each all has described outlet frame and described pedestal along the thickness on the described axial direction, and wherein, the thickness of described pedestal is no more than the twice of described outlet frame thickness.The compact structure of this kind fan can produce air-flow to compare even velocity from the emission output face of fan.

Because the outlet frame of this kind fan is the outlet frame of a single closed circle loop, when the aperture of this closed circle loop more greatly, when particularly very big, near the speed of the air-flow that flows out the air-flow that flow out at the middle part of the opening that is limited from this closed circle loop and the close loop wall of described opening differs greatly, and can't obtain the uniform large size air-flow of flow velocity.Therefore necessary the improvement is so that the user really enjoys comfortable nice and cool effect on a large scale.

Summary of the invention

The utility model aims to provide a kind of improved fan to overcome above-mentioned defective of the prior art.The purpose of this utility model provides a kind of fan, and this fan in use can provide flow velocity uniform large size air-flow.

In order to achieve the above object, the utility model adopts following technological scheme: be used to produce the on-bladed fan of air stream, it comprises: pedestal is provided with the member that is used to produce high pressure draught in described pedestal; Outlet frame with closed circuit, described outlet frame is installed on the described pedestal, described outlet frame comprises inner passage and the relief opening that is used to receive from the high pressure draught of described pedestal, high pressure draught is injected by described relief opening, the closed circuit of described outlet frame limits opening, the air-flow suction that described fan air outside is sprayed from described relief opening by described opening; It is characterized in that, described outlet frame comprises housing and a plurality of nozzle with bar shaped relief opening of a hollow, described nozzle is set in the described housing and all is communicated with described housing, described housing and described nozzle all have the thickness along axial direction, and the thickness of described housing is greater than the thickness of described nozzle.

Described nozzle is set in the described housing, and common a plurality of nozzles equally spaced are arranged in the described housing.Its end towards the air-flow outbound course of described housing is called front end, its reciprocal end towards the air-flow outbound course is called the rear end, described nozzle in described housing usually the rear end near described housing be provided with, the relief opening that makes described nozzle and the front end of described housing be certain distance apart.In a preferred embodiment, described a plurality of nozzle equally spaced vertically is arranged in the described housing.

The housing of described hollow is meant non-solid housing, and its housing is hollow, and the hollow passageway of its housing can receive the high pressure draught from described pedestal.

Described housing is a housing that constitutes closed circuit, and the shape of cross section of the whole closed circuit of described housing can be circular, can be oval, also can be round rectangle, can also be other shape.

The thickness of described housing is greater than the thickness of described nozzle, and the thickness of described housing is more than 1.5 times of thickness of described nozzle normally.

Described housing had both had the effect of accepting or sending from the high pressure draught of described pedestal, have again qualification by described housing around the inner space size and can effectively form the effect of negative pressure region when the described relief opening inject high pressure air-flow, also have the effect of the output face that limits output gas flow substantially.

On described nozzle, have outside the relief opening, on the inwall of described housing, also relief opening can be set.Usually be provided with the coanda surface near the exhaust ports on the described housing.

The number of described nozzle is many more, can form the uniform negative pressure of space distribution in the inner space of described housing more usually, and to obtain more uniform airflow of flow velocity, the number of its described nozzle is generally 2 to 20.

Be meant that about term " high pressure draught " air pressure is higher than the air-flow of fan around atmospheric pressure.

About term " on-bladed " is to be used for describing that air-flow discharges forward from the fan assembly or ejection and do not need to use impeller assembly.By this definition, vaneless fan can be counted as has output face or the launch site that does not have the blade or the wing, and air-flow is along roughly therefrom discharging or launch towards user's direction.

The on-bladed fan can provide main air to originate by multiple source apparatus or generating means and produce high pressure draught, for example pump, generator, motor or comprise engine rotor and other fluid delivery systems of rotating equipment such as impeller blade.The air quantity that produces by motor makes passes inner passage arrival outlet frame the environment of air draught from room or fan outside, sprays from relief opening then.Therefore, do not lie in the required parts of fan secondary function such as extending to power source and component about the illustrative purposes of term " on-bladed ", such as motor.The example of fan secondary function comprises the swing of illumination, adjusting and fan.

The described member that is used to produce high pressure draught can comprise also can comprise dc brushless motor and mixed flow impeller by motor-driven impeller.

The utlity model has following good effect:

Because the outlet frame of the utility model device comprises housing and a plurality of nozzle with bar shaped relief opening of a hollow, described nozzle is set in the described housing and all is communicated with described housing, described housing and described nozzle all have the thickness along axial direction, the thickness of described housing is greater than the thickness of described nozzle, can export the uniform large size air-flow of flow velocity, make the user can experience comfortable nice and cool effect on a large scale.

Description of drawings

Fig. 1 is the structural representation of the on-bladed fan of prior art;

Fig. 2 is the schematic perspective view of the outlet frame of on-bladed fan shown in Figure 1;

Fig. 3 is the schematic representation of fan of the present utility model;

Fig. 4 is the schematic perspective view of the outlet frame of fan shown in Figure 3;

Fig. 5 is the schematic perspective view of the nozzle of outlet frame shown in Figure 4;

Fig. 6 is second embodiment of fan of the present utility model;

Fig. 7 is the 3rd embodiment of fan of the present utility model;

Fig. 8 has showed the 4th embodiment of fan of the present utility model.

Embodiment

Fig. 1 shows the structure of the on-bladed fan of prior art.Fan comprises the outlet frame 7 with closed circle loop, and this outlet frame 7 limits opening 4.With reference to figure 2, outlet frame 7 comprises coanda (Coanda) surface (not drawing among the figure) of circular inner passage, relief opening 3 and close relief opening 3 again.The coanda surface is arranged so that the air communication of leaving and be directed flowing through the coanda surface from relief opening 3 crosses Coanda effect and be exaggerated, and relief opening 3 is the relief opening of ring-type.Outlet frame 7 is connected on the pedestal 1 and by this base supports.

The outlet frame of this kind fan is a single closed circle loop, about the axis X symmetry, when the aperture of this closed circle loop is big, near the speed of the air-flow that flows out the air-flow that flows out from the middle part of opening 4 and the close loop wall of opening 4 differs greatly, and can't obtain the uniform large size air-flow of flow velocity.

Fig. 3 is the schematic representation of fan of the present utility model.As seen from the figure, the utility model device comprises: pedestal 1 is provided with the member that is used to produce high pressure draught in pedestal; Be installed in the outlet frame 7 on the pedestal 1, this outlet frame comprises housing 2 and 3 nozzles 6 with bar shaped relief opening of a hollow, and these nozzles equally spaced vertically are arranged in the housing 2 and all are communicated with housing 2; The shape of cross section of the whole closed circuit of housing 2 is a round rectangle; A plurality of loops of this outlet frame have constituted 4 openings 4, the air-flow suction that described fan air outside is sprayed by the relief opening 3 from 3 nozzles 6 by these openings.With reference to figure 4 and Fig. 5, housing 2 and nozzle 6 all have along the thickness of axis X direction, the thickness of housing 2 is greater than the thickness of nozzle 6, the relief opening 3 of nozzle 6 is positioned at the front end of nozzle 6, near the cross-sectional dimension of nozzle 6 relief opening helps improving the speed from the air-flow of relief opening ejection like this less than the cross-sectional dimension at nozzle 6 its rear portions.As can see from Figure 4, nozzle 6 is set in the housing 2 and near its rear end, and the relief opening 3 that makes the front end that is positioned at nozzle and the front end of housing 2 are at a distance of certain distance.

When this kind fan uses, be positioned at the member operation work of the generation pressurized gas of pedestal 1, air is drawn into from the import 5 of the outer casing underpart that is positioned at pedestal 1, send in the inner passage of outlet frame 7 through after boosting, and be deflated mouthfuls 3 ejections, be deflated mouthful air-flows of 3 ejections from the air of ambient, external environment and entrainment, air-flow that is ejected and the air-flow that entrainmented are in conjunction with the total air flow that penetrates forward from outlet frame 7 with generation.

Because a plurality of nozzles 6 of this kind fan are equally spaced distributed outlet frame 7 in, when work can 2 of housings around the inner space form space distribution negative pressure relatively uniformly, to reach the purpose of exporting the uniform large size air-flow of flow velocity.

Fig. 6 shows second embodiment of fan of the present utility model.Be easy to find out that present embodiment comprises from figure: pedestal 1 is provided with the member that is used to produce high pressure draught in pedestal; Be installed in the outlet frame 7 on the pedestal 1, this outlet frame comprises a housing 2 and 5 nozzles 6 with bar shaped relief opening, these nozzles equally spaced vertically are arranged in the housing 2 and all are communicated with housing 2, the shape of cross section of the whole closed circuit of housing 2 is circular, a plurality of loops of this outlet frame have constituted 6 openings 4, the air-flow suction that described fan air outside is sprayed by the relief opening 3 from 5 nozzles 6 by these openings.

Fig. 7 shows the 3rd embodiment of fan of the present utility model.From figure, be easy to find out, present embodiment is that to be provided with 4 nozzles 6 on embodiment's shown in Figure 3 basis formed more, these 4 nozzles are horizontally set in the housing 2 and are on same the horizontal line, a plurality of loops of outlet frame 7 have constituted 8 openings 4 like this, when work can 2 of housings around the inner space form the more uniform negative pressure of space distribution, with the more uniform large size air-flow of acquisition flow velocity.

Fig. 8 shows another embodiment of fan of the present utility model.As can be seen from the figure, present embodiment is similar to embodiment's shown in Figure 3, just the outlet frame 7 of present embodiment is a bit different, the outlet frame 7 of present embodiment also is provided with relief opening on the inwall of housing 2, when work, help like this forming the more uniform negative pressure of space distribution, to obtain the more uniform large size air-flow of flow velocity in the inner space of housing 2.

Although showed and described and thought preferred embodiment of the present utility model at present, apparent, those skilled in the art can carry out various changes and improvements, and does not deviate from the scope of the present utility model that is limited by appended claims.

Claims (10)

1. on-bladed fan that is used to produce air stream, it comprises: pedestal (1) is provided with the member that is used to produce high pressure draught in described pedestal; Outlet frame (7) with closed circuit, described outlet frame is installed on the described pedestal, described outlet frame comprises inner passage and the relief opening (3) that is used to receive from the high pressure draught of described pedestal, high pressure draught is injected by described relief opening, the closed circuit of described outlet frame limits opening (4), the air-flow suction that described fan air outside is sprayed from described relief opening by described opening; It is characterized in that, described outlet frame comprises housing (2) and a plurality of nozzle (6) with bar shaped relief opening of a hollow, described nozzle is set in the described housing and all is communicated with described housing, described housing and described nozzle all have along the thickness of axis (X) direction, and the thickness of described housing is greater than the thickness of described nozzle.
2. on-bladed fan as claimed in claim 1 is characterized in that, described a plurality of nozzles equally spaced vertically are arranged in the described housing.
3. on-bladed fan as claimed in claim 1 is characterized in that, the thickness of described housing is more than 1.5 times of thickness of described nozzle.
4. on-bladed fan as claimed in claim 1 is characterized in that, described a plurality of nozzles equally spaced vertically are arranged in the described housing, and the thickness of described housing is more than 1.5 times of thickness of described nozzle.
5. on-bladed fan as claimed in claim 1 is characterized in that, also is provided with relief opening on the inwall of described housing.
6. on-bladed fan as claimed in claim 1 is characterized in that, also is provided with relief opening on the inwall of described housing, and the thickness of described housing is more than 1.5 times of thickness of described nozzle.
7. as the described on-bladed fan of one of claim 1 to 6, it is characterized in that the number of described nozzle is 2 to 20.
8. as the described on-bladed fan of one of claim 1 to 6, it is characterized in that described housing is a housing that constitutes closed circuit, the shape of cross section of the whole closed circuit of described housing is circular.
9. as the described on-bladed fan of one of claim 1 to 6, it is characterized in that described housing is a housing that constitutes closed circuit, the shape of cross section of the whole closed circuit of described housing is a round rectangle.
10. as the described on-bladed fan of one of claim 5 to 6, it is characterized in that described housing comprises the coanda surface that is provided with near the relief opening on its housing.
CN2010205483072U 2010-09-22 2010-09-22 Fan CN201763705U (en)

Priority Applications (1)

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