CN102777430A

CN102777430A - Fan

Info

Publication number: CN102777430A
Application number: CN2011101237735A
Authority: CN
Inventors: 任文华
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-12
Filing date: 2011-05-12
Publication date: 2012-11-14

Abstract

The invention provides a fan for generating air flow. The fan is characterized in that the fan comprises a spray nozzle and a component which is used for generating air flow passing through the spray nozzle, the spray nozzle comprises an internal passage and an exhaust port, the spray nozzle extends around an axis to define an opening, air coming from the outside of the fan is entrained by the air flow which is sprayed from the exhaust port to pass through the opening, the spray nozzle comprises a surface, the exhaust port is arranged in the surface to guide the air flow, the surface comprises a guide surface and the guide surface is arranged below the exhaust port and extends around the axis approximately in the shape of a cylinder. The fan provided by the invention has the characteristics that the stable and cool air flow can be effectively provided, the loss is small, the production process is simple and the like.

Description

Fan

Technical field

The present invention relates to a kind of fan assembly that produces air stream.

Background technique

The one Chinese patent application that on March 31st, 2010, publication number was CN 101684828A (application number: 200910175867.X) disclose a kind of fan that is used to produce air stream; This kind fan comprises nozzle and is used to produce the member through the air-flow of said nozzle; Said nozzle comprises the inner passage and the relief opening that is used to launch air-flow that is used to receive air-flow, and said nozzle extends around an axis, to limit an opening; Entrainmented through said opening by air-flow from the fan air outside from said relief opening emission; Nozzle comprises a surface, and said relief opening is set on this surface air-flow is directed, and this surface comprises diffusing surface and guiding surface; This diffusing surface is taperedly away from said axis, and this guiding surface is also angled with it below said diffusing surface.

Owing to have the angle of cut that causes that air-flow is undergone mutation between the diffusing surface of this kind fan and the guiding surface; Cause turbulent flow and whirlpool easily; Influence the using effect of its air-flow, the cross section of its inner passage of this kind fan is less in addition, and the resistance that air-flow flows in the inner passage is bigger.

Summary of the invention

The present invention aims to provide a kind of improved fan component, to overcome above-mentioned defective of the prior art.

First aspect of the present invention is will provide-kind of fan, and this kind is used to produce the fan of air stream, it is characterized in that; Said fan comprises nozzle and is used to produce the member through the air-flow of said nozzle, and said nozzle comprises the inner passage and the relief opening that is used to launch air-flow that is used to receive air-flow, and said nozzle extends around an axis; To limit an opening; Entrainmented through said opening by the air-flow from said relief opening emission from the fan air outside, nozzle comprises a surface, and said relief opening is set on this surface with steering flow; This surface comprises guiding surface, and this guiding surface is positioned at the below of relief opening and roughly is cylindric extension around said axis.

Be positioned at the below of relief opening about guiding surface, be meant that this guiding surface is positioned at relief opening and launches near the outlet of air-flow downwards.This guiding surface directly is connected with a surface that constitutes said relief opening usually.

Because guiding surface roughly is cylindric extension around said axis, the angle between at this moment said guiding surface and the said axis is about 0 degree.

Angle between the Way out of said relief opening and the said axis is usually between 5 degree to 30 degree, preferably between 5 degree to 20 degree.

The distance that said guiding surface extends along axial direction is usually between 5 millimeters to 80 millimeters; Said nozzle is at least 30 millimeters along the distance that axial direction extends, and is preferably more than 50 millimeters.

Said surface can also comprise the outwards open surface of opening, this open the surface be positioned at said guiding surface the below and with said guiding surface at angle, this angle is preferably more than 45 degree usually greater than 30 degree.

The said member that is used to produce through said nozzle air current can be set in the pedestal, and said nozzle is set on the pedestal; The said member that is used to produce through said nozzle air current can all be set in the said inner passage, also can partly be set in the said inner passage.

The said member that is used to produce through said nozzle air current generally includes motor and by motor-driven impeller; Motor can be a dc brushless motor, also can be AC motor; Impeller can be horizontal impeller, can be mixed flow impeller, can also be other impeller.

Said fan usually can be by the technology of shaking the head of existing fan or is increased the coverage area of frame with the wind that increases said fan and exported of shaking the head.

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

Second aspect of the present invention is will provide-kind of nozzle, and this kind is used to produce the nozzle of the fan of air stream, it is characterized in that; Said nozzle comprises the inner passage and the relief opening that is used to launch air-flow that is used to receive air-flow; Said nozzle extends around an axis, to limit an opening, is entrainmented through said opening by the air-flow from said relief opening emission from the fan air outside; Nozzle comprises a surface; Said relief opening is set on this surface with steering flow, and this surface comprises guiding surface, and this guiding surface is positioned at the below of relief opening and roughly is cylindric extension around said axis.

Said surface can also comprise the outwards open surface of opening, this open the surface be positioned at said guiding surface the below and with said guiding surface at angle; Said surface can also comprise and open the arcuate surface that the surface is connected.

Slot-shaped outlet is usually adopted in the outlet of said relief opening, said relief opening at the width in its outlet port usually between 0.5 millimeter to 10 millimeters, preferably between 1 millimeter to 6 millimeters; The Way out of said relief opening and the angle of axial direction are usually less than 30 degree, preferably less than 20 degree.

The present invention has following good effect:

Fan of the present invention or be used for the nozzle of fan, the guiding surface that directly roughly is cylindric extension from the air-flow of relief opening emission and the air-flow that entrainmented around axis guides, and can effectively avoid the generation of turbulent flow and whirlpool, has significantly improved the cooling effect of air-flow; The inner passage of apparatus of the present invention is bigger in addition, has significantly reduced the flow resistance of air-flow in the inner passage, has reduced the loss of energy; Also have the structure and the manufacturing process of apparatus of the present invention comparatively simple, help improving its manufacturing efficiency.

Description of drawings

Fig. 1 is the structural representation of fan of the present invention;

Fig. 2 is a fan shown in Figure 1 sectional view along the intercepting of A-A line;

Fig. 3 is the sectional view of another embodiment's fan along the intercepting of A-A line.

Embodiment

Fig. 1 is the structural representation from the fan of the present invention of device forward observation.This fan comprises nozzle 1 that defines opening 5 and the member 2 that is arranged on pedestal 9 interior generations the passing through air-flow of nozzle 1, and nozzle 1 is set on the pedestal.And with reference to figure 2, this nozzle 1 comprises inner passage 3 and relief opening 4, and this nozzle 1 is arranged as roughly and extends about X orthogonal axe ground.

Fig. 2 has further shown the detail of fan.Visible from Fig. 2, the inner shell 10 that is positioned at the front has formed inner passage 3 with the external casing 11 that is positioned at the back, and obviously the sectional area of this inner passage 3 is bigger, helps flowing of air-flow; The outer surface 8 of inner shell 10 has constituted relief opening 4 with the internal surface 12 of external casing 11.

The characteristic of nozzle illustrated in figures 1 and 21 is described below.The shape of nozzle 1 is annular.Inner passage 3 also be the annular and be continuous annular pass.In the present embodiment, nozzle 1 comprises the internal surface 12 of external casing 11 and the outer surface 8 of inner shell 10, thus internal surface 12 and outer surface 8 relief openings 4 that define closer to each other.Relief opening 4 extends around axis X, and the spacing of relief opening in its outlet port is selected as in 1 millimeter to 5 millimeters scope, and performance and the characteristics that fan is required are depended in the selection of spacing.In the present embodiment, outlet is about 2 mm wides, and relief opening 4 is concentric with inner passage 3.

The surface of the nozzle 1 of present embodiment comprises the guiding surface 6 that is positioned at relief opening 4 belows, and guiding surface 6 is that outer surface 8 directly is connected with a surface that constitutes relief opening 4.Guiding surface 7 is arranged as and is basically parallel to axis X and presents substantially cylindrical and level and smooth basically face; Directly being directed surface 6 from the air-flow of relief opening emission and the air-flow that entrainmented like this guides; Can effectively avoid the generation of turbulent flow and whirlpool, make air-flow can be directed flowing to the place ahead reposefully.

In the present embodiment, the surface of nozzle 1 also comprises the outwards open surface 7 of opening, and this opens, and surface 7 is positioned at the below of guiding surface 6 and away from relief opening 4, the angle that opens surface 7 and guiding surface 6 is about 60 degree in the present embodiment.

In the present embodiment, the surface of nozzle 1 comprises also and opens the arcuate surface 13 that surface 7 is connected that this structure makes nozzle 1 have shape attractive in appearance.

During work; The air-flow that member 2 is produced is admitted in the inner passage 3 of nozzle 1; And the air communication that inner passage 3 is received is crossed relief opening 4 and is launched, and the air-flow of being launched from relief opening 4 is directed surface 6 and is directed, and assembles or concentrates towards the user at last; Entrainmented through opening 5 by the air-flow of launching from relief opening from the fan air outside, constitute the total air flow of output forward from relief opening 4 air-flow of being launched and the air-flow that is entrainmented.

Fig. 3 shows the sectional view that amplify the part of another embodiment's fan.Fig. 3 is a replacement structure embodiment illustrated in fig. 2.Can clearly be seen that from Fig. 3 the nozzle 1 of present embodiment does not have and opens the arcuate surface 13 that surface 7 is connected, but the surface of having adopted other, the another kind that has provided nozzle 1 shape is like this selected.

Although showed and described and thought preferred embodiments of the invention at present, obvious, those skilled in the art can carry out various changes and improvement, and does not deviate from the scope of the present invention that is limited appended claims.

Claims

1. a fan that is used to produce air stream is characterized in that, said fan comprises nozzle (1) and is used to produce the member (2) through the air-flow of said nozzle; Said nozzle comprises inner passage (3) that is used to receive air-flow and the relief opening (4) that is used to launch air-flow; Said nozzle extends around an axis, to limit an opening (5), is entrainmented through said opening by the air-flow from said relief opening emission from the fan air outside; Nozzle comprises a surface; Said relief opening is set on this surface with steering flow, and this surface comprises guiding surface (6), and this guiding surface is positioned at the below of relief opening and roughly is cylindric extension around said axis.

2. the fan that is used to produce air stream as claimed in claim 1 is characterized in that, the angle between the Way out of said relief opening and the said axis is between 5 degree to 30 degree.

3. the fan that is used to produce air stream as claimed in claim 1 is characterized in that, the distance that the said axial direction in said guiding surface edge extends is between 5 millimeters to 80 millimeters.

4. the fan that is used to produce air stream as claimed in claim 1 is characterized in that, the angle between said guiding surface and the said axis is 0 degree.

5. like the described fan that is used to produce air stream of one of claim 1 to 4, it is characterized in that said surface also comprises the outwards open surface (7) of opening, this open the surface be positioned at said guiding surface the below and with said guiding surface at angle.

6. like the described fan that is used to produce air stream of one of claim 1 to 4; It is characterized in that; Said surface also comprises the outwards open surface (7) of opening, and this opens that the surface is positioned at the below of said guiding surface and becomes an angle greater than 45 degree with said guiding surface.

7. nozzle that is used to produce the fan of air stream; It is characterized in that said nozzle comprises inner passage (3) that is used to receive air-flow and the relief opening (4) that is used to launch air-flow, said nozzle extends around an axis; To limit an opening (5); Entrainmented through said opening by the air-flow from said relief opening emission from the fan air outside, nozzle comprises a surface, and said relief opening is set on this surface with steering flow; This surface comprises guiding surface (6), and this guiding surface is positioned at the below of relief opening and roughly is cylindric extension around said axis.

8. the nozzle that is used to produce air stream as claimed in claim 7 is characterized in that, the angle between the Way out of said relief opening and the said axis is between 5 degree to 30 degree.

9. the nozzle that is used to produce air stream as claimed in claim 7 is characterized in that, the distance that the said axial direction in said guiding surface edge extends is between 5 millimeters to 80 millimeters.

10. the nozzle that is used to produce air stream as claimed in claim 7; It is characterized in that; Said surface comprises the outwards open surface (7) of opening; This open the surface be positioned at said guiding surface the below and with said guiding surface at angle, and said surface also comprises and opens surface 7 arcuate surface (13) that are connected.