CN103573590A

CN103573590A - Fan

Info

Publication number: CN103573590A
Application number: CN201210275493.0A
Authority: CN
Inventors: 任文华
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-04
Filing date: 2012-08-04
Publication date: 2014-02-12

Abstract

The invention discloses a fan for generating air stream. The fan comprises a nozzle, an impeller cover, an impeller, a motor and a first silencing member, wherein the impeller cover is provided with an air inlet and an air outlet; the impeller is arranged in the impeller cover; the motor is used for driving the impeller to generate air stream passing through the impeller cover; the first silencing member is arranged on the outer wall of the impeller cover; the nozzle comprises an internal channel for receiving air stream from the air outlet of the impeller cover and an exhaust opening; air stream is exhausted out of the fan via the exhaust opening. The fan has the characteristics of low noise and the like.

Description

Fan

Technical field

The present invention relates to a kind of fan.

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 for generation of air stream, this kind of fan comprises: pedestal and be arranged on the nozzle on described pedestal, in pedestal, be provided with the member for generation of the air-flow by described nozzle, its member comprises impeller chimney, be positioned at the impeller of impeller chimney and the motor of drives impeller rotary work, its nozzle has for receiving inner passage and the relief opening from the air-flow of pedestal, air-flow is injected by described relief opening, nozzle substantially extends and limits opening orthogonally about axis, the air of described fan outside is aspirated by the air-flow spraying from described relief opening by described opening.When the motor of this kind of fan and impeller work, can send larger noise, its use is greatly affected.

Summary of the invention

The object of the invention is to provide-fan that kind of noise is lower.This kind is for generation of the fan of air stream, it is characterized in that, the impeller, drives impeller that described fan comprises nozzle, have the impeller chimney of air inlet and air outlet slit, be positioned at impeller chimney is to produce through the motor of the air-flow of impeller chimney and to be arranged on the first noise reduction member on impeller chimney outer wall, described nozzle comprises inner passage and the relief opening that receives air-flow for the air outlet slit from impeller chimney, and wherein air-flow penetrates from fan by relief opening.

Preferably, described fan comprises pedestal, and described nozzle is arranged on pedestal, and described pedestal comprises frame, and frame has sidewall, and sidewall comprises at least one air inlet, and described frame holds described impeller chimney, described impeller and described motor.

In a preferred embodiment, described the first noise reduction member is arranged near the impeller chimney outer wall air inlet of impeller chimney.In another preferred embodiment, described the first noise reduction member is arranged near the impeller chimney outer wall air outlet slit of impeller chimney.

Preferably, described the first noise reduction member comprises the combination of acoustic foam, acoustic foam and porous slab.Acoustic foam comprises sponge and glass wool.

In a preferred embodiment, described the first noise reduction member is annular.In another preferred embodiment, described the first noise reduction member is noise reduction layer, and wherein, the thickness of noise reduction layer is between 2mm to 80mm.

Preferably, described fan comprises the second noise reduction member that is positioned at impeller chimney.

In a preferred embodiment, described the second noise reduction member is annular.

Preferably, described nozzle limits an opening, and the air-flow penetrating from relief opening passes through described opening by the air intake in fan outside.Described nozzle can limit a plurality of openings, and its opening can be various shape, can be circular, oval, round rectangle, can be also part annular, can also be other shape.

Described relief opening is limited by pair of opposing surfaces conventionally; Described relief opening at the width in its outlet port conventionally between 0.5mm to 10mm, preferably between 1mm to 6mm.

Described motor can be DC Brushless Motor, can be also alternating current motor; Impeller can be horizontal impeller, can be mixed flow impeller, can also be other impeller.Preferably, in impeller chimney, there is diffuser with impeller downstream.

Described fan can be desk fan, can be wall fan, can be ceiling fan, can be flooring fan, can also be the fan of other type.The miscellaneous function of described fan can comprise illumination, adjusting and the swing of fan.

The present invention has following good effect: fan of the present invention arranges noise reduction member on the outer wall of impeller chimney, due to the close together between this noise reduction member and the air inlet/outlet of impeller chimney, be conducive to the noise that passes through these air inlet/outlet unofficial biography effectively absorbing or decay is sent by motor and impeller; Be arranged in addition the noise reduction member on impeller chimney outer wall, very few on flowing to the impact of air stream of air inlet of impeller chimney, make air stream there is lower loss in the process of air inlet that flows to impeller chimney.

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 that the fan shown in Fig. 2 is along the sectional view of B-B line intercepting.

Fig. 4 is that the fan shown in figure l is along the sectional view of A-A line intercepting.

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 and Fig. 4 have shown the internal structure of fan shown in Fig. 1.From Fig. 1 to Fig. 4, can find out, this fan comprises pedestal 1 and is arranged on the nozzle 2 on pedestal 1; Pedestal 1 comprises frame 4 and is positioned at frame 4 base portion 3 below, and frame 4 has sidewall, and sidewall comprises air inlet 5, the form that air inlet 5 is grid hole; In frame 4, be provided with impeller chimney 10, be positioned at the impeller 11 of impeller chimney, the motor 12 of drives impeller rotary work, be positioned at the first noise reduction member 9 on impeller chimney outer wall and be positioned at the second noise reduction member 13 of impeller chimney 10, impeller chimney 10 has air inlet 14 and air outlet slit 15; Nozzle 2 comprises inner passage 7 and the relief opening 8 that receives air-flow for the air outlet slit 15 from impeller chimney, and nozzle 2 defines an opening 6, and this opening is to have the scarce opening of circle.

In the present embodiment, the diameter of the grid hole on frame 4 is 1mm, and relief opening 8 is about 2mm at the width in its outlet port; The first noise reduction member 9 and the second noise reduction member 13 are all annular sponge; Frame 4 relatively base portion 3 swings.

During this kind of fan work, be positioned at motor 12 drives impeller 11 rotary works of pedestal 1, air can be drawn into from the air inlet 5 being positioned at frame 4, the air entering in frame 4 is admitted in the inner passage 7 of nozzle 2 after boosting, and be deflated mouthfuls 8 and spray and flow out opening 6, from the air of fan outside, by opening 6, be deflated mouthful 8 air-flows that spray and entrainment, the total air flow that the air-flow being ejected and the air-flow formation of being entrainmented penetrate forward from nozzle 2.

From Fig. 3, can clearly be seen that, during the work of motor and impeller, send out air inlet 14 and the air outlet slit 15 of noise by impeller chimney 10 and outwards transmit; Because the first noise reduction member 9 is positioned near the air inlet 14 of impeller chimney, the noise outwards transmitting from air inlet 14 can effectively be absorbed or be decayed; Meanwhile, because the second noise reduction member 13 is positioned near the impeller chimney air outlet slit 15 of impeller chimney, the noise outwards transmitting from air outlet slit 15 also can be absorbed or be decayed; And the first noise reduction member 9 and the second residing position of noise reduction member 13 can not produce larger impact to the proper flow of air stream.

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.For example, noise reduction member or noise reduction parts can form any shape or have any suitable structure such as baffler or acoustic foam, and for example the density of foam and type can change.

Claims

1. the fan for generation of air stream, it is characterized in that, the impeller (11), drives impeller that described fan comprises nozzle (2), have the impeller chimney (10) of air inlet and air outlet slit, be positioned at impeller chimney is to produce through the motor (12) of the air-flow of impeller chimney and to be arranged on the first noise reduction member (9) on impeller chimney outer wall, described nozzle comprises inner passage (7) and the relief opening (8) that receives air-flow for the air outlet slit from impeller chimney, and wherein air-flow penetrates from fan by relief opening.

2. fan as claimed in claim 1, it is characterized in that, described fan comprises pedestal (1), described nozzle is arranged on pedestal, described pedestal comprises frame (4), frame has sidewall, and sidewall comprises at least one air inlet, and described frame holds described impeller chimney, described impeller and described motor.

3. the fan as described in claim l or 2, is characterized in that, described the first noise reduction member is arranged near the impeller chimney outer wall air inlet of described impeller chimney.

4. the fan as described in claim l or 2, is characterized in that, described the first noise reduction member comprises acoustic foam.

5. the fan as described in claim l or 2, is characterized in that, described the first noise reduction member comprises the combination of acoustic foam and porous slab.

6. the fan as described in claim l or 2, is characterized in that, described nozzle limits an opening (6), and the air-flow penetrating from described relief opening passes through described opening by the air intake in fan outside.

7. the fan as described in claim l or 2, is characterized in that, described the first noise reduction member is annular.

8. the fan as described in claim l or 2, is characterized in that, described the first noise reduction member is noise reduction layer, and wherein, the thickness of noise reduction layer is between 2mm to 80mm.

9. the fan as described in claim l or 2, is characterized in that, described fan comprises the second noise reduction member (13) that is positioned at impeller chimney.

10. fan as claimed in claim 9, is characterized in that, described the second noise reduction member is annular.