CN202082171U

CN202082171U - Fan

Info

Publication number: CN202082171U
Application number: CN2011201495889U
Authority: CN
Inventors: 任文华
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-12
Filing date: 2011-05-12
Publication date: 2011-12-21
Anticipated expiration: 2021-05-12

Abstract

The utility model provides a fan for generating air flow, which is characterized by comprising a nozzle and a component for generating the air flow to pass through the nozzle, the nozzle comprises an inner passage, an exhaust outlet and a surface and extends around an axis to limit an opening, air from the outside of the fan passes through the opening by being entrained by the air flow ejected out of the exhaust outlet, the exhaust outlet is arranged on the surface to guide the air flow, and the surface comprises a guide surface positioned below the exhaust outlet and extends in an approximately cylindrical shape around the axis. The fan is capable of providing smooth, steady and cool air flow and has the advantages of low loss, simple production technology and the like.

Description

Fan

Technical field

The utility model relates to a kind of fan assembly that produces air stream.

Background technique

The 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 the member that is used to produce by the air-flow of described nozzle, described nozzle comprises the relief opening that is used to receive the inner passage of air-flow and is used to launch air-flow, described nozzle extends around an axis, to limit an opening, entrainmented by described opening by air-flow from the fan air outside from described relief opening emission, nozzle comprises a surface, described relief opening is set on this surface air-flow is directed, this surface comprises diffusing surface and guiding surface, this diffusing surface is taperedly away from described axis, and this guiding surface is also angled with it below described 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 utility model aims to provide a kind of improved fan component, to overcome above-mentioned defective of the prior art.

First aspect of the present utility model is will provide-kind of fan, this kind is used to produce the fan of air stream, it is characterized in that, described fan comprises nozzle and the member that is used to produce by the air-flow of described nozzle, described nozzle comprises the relief opening that is used to receive the inner passage of air-flow and is used to launch air-flow, described nozzle extends around an axis, to limit an opening, entrainmented by described opening by air-flow from the fan air outside from described relief opening emission, nozzle comprises a surface, described 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 described 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 described relief opening usually.

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

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

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

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

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

The described member that is used to produce by described 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.

Described 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 described fan and exported of shaking the head.

Described 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 utility model is will provide-kind of nozzle, this kind is used to produce the nozzle of the fan of air stream, it is characterized in that, described nozzle comprises the relief opening that is used to receive the inner passage of air-flow and is used to launch air-flow, described nozzle extends around an axis, to limit an opening, entrainmented by described opening by air-flow from the fan air outside from described relief opening emission, nozzle comprises a surface, described 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 described axis.

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

Slot-shaped outlet is usually adopted in the outlet of described relief opening, described 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 described relief opening and the angle of axial direction are usually less than 30 degree, preferably less than 20 degree.

The utlity model has following good effect:

Fan of the present utility model 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, can effectively avoid the generation of turbulent flow and whirlpool, significantly improve the cooling effect of air-flow; The inner passage of the utility model device 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 structure of the present utility model and manufacturing process comparatively simple, help improving its manufacturing efficiency.

Description of drawings

Fig. 1 is the structural representation of fan of the present utility model;

Fig. 2 is the sectional view that fan shown in Figure 1 intercepts along the 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 utility model of device forward observation.This fan comprises the nozzle 1 that defines opening 5 and is arranged on the member 2 of pedestal 9 interior generations the passing through air-flow of nozzle 1 that 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 orthogonally about the X-axis line.

Fig. 2 has further shown the detail of fan.As can be seen 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 feature 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 substantially 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 surface 7 arcuate surface that are connected 13 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, the air-flow that is launched from relief opening 4 is directed surface 6 and is directed, at last towards user's convergence or concentrated, entrainmented by 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 surface 7 arcuate surface that are connected 13, 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 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

1. fan that is used to produce air stream, it is characterized in that, described fan comprises nozzle (1) and is used to produce member (2) by the air-flow of described nozzle, described nozzle comprises inner passage (3) that is used to receive air-flow and the relief opening (4) that is used to launch air-flow, described nozzle extends around an axis, to limit an opening (5), entrainmented by described opening by air-flow from the fan air outside from described relief opening emission, nozzle comprises a surface, described 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 described 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 described relief opening and the described axis is between 5 degree are spent to 30.

3. the fan that is used to produce air stream as claimed in claim 1 is characterized in that, the distance that described guiding surface extends along described axial direction 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 described guiding surface and the described axis is 0 degree.

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

6. as the described fan that is used to produce air stream of one of claim 1 to 4, it is characterized in that, described surface also comprises the outwards open surface (7) of opening, and this opens, and the surface is positioned at the below of described guiding surface and become one greater than 45 angles of spending with described guiding surface.