CN209228723U - Noise-reducing fan device - Google Patents

Abstract

A kind of noise-reducing fan device includes outer cover unit and impeller.The outer cover unit includes the shell for defining installation space, the installation space is divided into along the flow area at axis interval and noise reduction cavity and with the porous plate of multiple holes, and it is connected to the Gas inlet tube of the flow area, the shell has the air outlet that the direction along the vertical axis opens up.The impeller is installed in the flow area, and generation air-flow can be rotated as axle center using the axis, so that the fraction in the flow area is flowed to the noise reduction cavity via multiple holes on the porous plate, avoids generating resonant frequency and reducing generated noise when impeller operating.

Description

Noise-reducing fan device

Technical field

The utility model relates to a kind of ancillary equipments of fan, more particularly to a kind of noise-reducing fan device.

Background technique

When existing fan running, because of fan blade end flow-disturbing easy to form, air and flabellum is made to generate irregular oscillation, And make to make a noise when the fan running.

Refering to fig. 1, it is an existing denoising device 1, suitable for being connected to a fan 10, and includes one to be connected to the wind The passive flabellum 12, one that fan 10 and the mask 11, one for defining space 110 in one are installed in the interior space 110 is set to The interior space 110 and ring flat-plate 13 and the filling that the interior space 110 is separated out to the anechoic chamber 130 that one is surrounded on periphery Noise reduction material 14 in the anechoic chamber 130.Wherein, the mask 11 has multiple perforations 111 in penetration state, and the ring It is in penetration state, and the through-hole 131 being connected between the interior space 110 and the anechoic chamber 130 that plate 13, which has multiple,.The fan 10 air-flows generated, are oriented to the interior space 110 by the rotation of the passive flabellum 12, and then divide through the perforation 111 Frequency is dissipated, or enters the anechoic chamber 130 via the through-hole 131 and is absorbed by the noise reduction material 14, generates elimination whereby The effect of noise.

However, aforesaid way also needs additionally to match the passive flabellum 12 of unification, and whether the passive flabellum 12 can be really sharp It is rotated with the air-flow that the fan 10 generates, and then air-flow is oriented to anechoic chamber 130 or is oriented to via the perforation 111 outer Boundary, it is necessary to cooperate verticity and the configuration of the fan 10 etc. parameter properly to adjust.Therefore, the drop Making an uproar, not only manufacturing process is complex for device 1, if not by perfect design, if expected noise reduction effect can be generated, also can Doubt.

It referring to Fig.2, be suitable for connecting a fan 20 for a kind of existing resonance denoising device 2, and include one to be connected to institute The resonating member 21 and an information of stating fan 20 are connected to the central processing unit 22 of the resonating member 21.Wherein, described total Vibration unit 21 includes that a shell 211, one for defining the interior space 210 that one is connected to the fan 20 is set to the interior space It is connected in 210 and by the partition 212, one that the interior space 210 is separated out the resonant cavity 200 that one is connected to the fan 20 The elastic component 213 for being used to keep the partition 212 mobile relative to the shell 211 between partition 212 and the shell 211, And two be installed on the partition 212 and information is connected to the central processing unit 22, and the sensing for sensing noise Part 214.When the sensing member 214 senses the noise that the operating of fan 20 generates, then the central processing unit 22 is saturating It crosses and adjusts the partition 212 and the elastic component 213, move the partition 212 in the interior space 210, change whereby The volume of the resonant cavity 200 changes resonance volume and reaches the effect of noise reduction.

However, the resonating member 21 also needs to connect a central processing unit 22, the central processing could be passed through The calculating of unit 22 generates the adjustment for being directed to the fan 20.But the volume that the central processing unit 22 not only occupies is big, builds Set at high cost, and controlling mechanism is also more complex, very inconvenient in use and construction.

Summary of the invention

Noise reduction wind relatively simple and that noise reduction effect can be reached really is configured the purpose of this utility model is to provide a kind of Fan device.

The utility model noise-reducing fan device includes outer cover unit and impeller.

The outer cover unit includes the shell for defining installation space, the installation space is divided between an axis Every flow area and noise reduction cavity and with the porous plate of multiple holes, and be connected to the Gas inlet tube of the flow area, the shell With the air outlet opened up along the direction of the vertical axis.

The impeller is installed in the flow area, and generation air-flow can be rotated as axle center using the axis, is made described Fraction in flow area flows to the noise reduction cavity via multiple holes on the porous plate.

It the purpose of this utility model and solves its technical problem also following technical measures can be used to further realize.

Preferably, aforementioned noise-reducing fan device, wherein the shell of the outer cover unit has around the flow area and has Have the clamshell of side opening, and be connected to the clamshell and surround the pedestal of the noise reduction cavity, the porous plate be set to it is described Between clamshell and the pedestal, and there is the inner hole in penetration state, the Gas inlet tube is to be connected to the inner hole.

Preferably, aforementioned noise-reducing fan device, wherein the shell of the outer cover unit has around the flow area and has There is the clamshell of side opening, be connected to the clamshell and surround the pedestal of the noise reduction cavity, the porous plate is to be set to the shell Between cover and the pedestal, the pedestal has the one end for being located remotely from the clamshell, and has the bottom plate of the perforation in penetration state, The Gas inlet tube is to be connected to the perforation.

Preferably, aforementioned noise-reducing fan device, wherein the shell of the outer cover unit have along the axis and with it is described Porous plate is located at the perforation of two opposite sides of the impeller, and the Gas inlet tube is to be connected to the perforation.

Preferably, aforementioned noise-reducing fan device, wherein the noise-reducing fan device also includes to be set to the noise reduction cavity In sound absorber.

Preferably, aforementioned noise-reducing fan device, wherein the sound absorber is porous material.

Preferably, aforementioned noise-reducing fan device, wherein the outer cover unit further includes being set to the air outlet and being used for Guide the conducting element of outlet air.

The beneficial effect of the utility model is: when the impeller operates in the flow area and generates air-flow, portion Point air-flow can flow into the noise reduction cavity via multiple holes on the porous plate from the flow area, can be simultaneously using avoiding producing It gives birth to resonant frequency and diffusing air current and reduces the mechanism that wind is cut, the effect of noise reduction is reached with by a relatively simple configuration.

Detailed description of the invention

Fig. 1 is a cross-sectional view, illustrates an existing denoising device；

Fig. 2 is a system configuration schematic diagram, illustrates an existing resonance denoising device；

Fig. 3 is a stereogram exploded view, illustrates a first embodiment of the utility model noise-reducing fan device；

Fig. 4 is a perspective view, illustrates the kenel that the first embodiment is completed；

Fig. 5 is a cross-sectional view, illustrates the effect of first embodiment eliminates noise；

Fig. 6 is a cross-sectional view, illustrates a second embodiment of the utility model noise-reducing fan device；

Fig. 7 is a stereogram exploded view, illustrates a 3rd embodiment of the utility model noise-reducing fan device；

Fig. 8 is a cross-sectional view, illustrates the effect of 3rd embodiment eliminates noise；

Fig. 9 is a cross-sectional view, illustrates a fourth embodiment of the utility model noise-reducing fan device.

Specific embodiment

The utility model is described in detail with reference to the accompanying drawings and embodiments.

Refering to Fig. 3, Fig. 4, a first embodiment of the utility model noise-reducing fan device includes an outer cover unit 3 and one The impeller 4 being set in the outer cover unit 3.

Simultaneously refering to Fig. 3 to Fig. 5, the outer cover unit 3 includes a shell 31, one for defining an installation space 310 will The installation space 310 is divided into be connected to along a flow area 301 at an interval axis A and the porous plate 32, one of a noise reduction cavity 302 In the Gas inlet tube 33 of the flow area 301 and one for guiding the conducting element 34 of outlet air.The shell 31 is with one around described Flow area 301 simultaneously there is the clamshell 311, one of a side opening 319 to be connected to the clamshell 311 and around the noise reduction cavity 302 Pedestal 312 and the air outlet 318 that is opened up along the direction of the vertical axis A.The conducting element 34 is to be set to the outlet air Mouth 318, and preferably one is gradually presented the cone cell radially inside contracted outward, to reach the effect of focused airflow pressurization outlet air, but simultaneously It is not limited with this kenel.

The porous plate 32 is to be set between the clamshell 311 and the pedestal 312, and having one is in the inner hole of penetration state 321, so that the Gas inlet tube 33 is connected to the inner hole 321, and extend to other than the clamshell 311 through the pedestal 312. In addition, multiple holes 329 in penetration state are formed on the porous plate 32, for making the part gas in the flow area 301 Stream flows to the noise reduction cavity 302.The impeller 4 is installed in the flow area 301, and can using the axis A as axle center and Rotation generates air-flow, flows to the fraction in the flow area 301 via the described hole 329 on the porous plate 32 The noise reduction cavity 302.

Refering to Fig. 5 and cooperate Fig. 3, when the impeller 4 operating, outside air can import described via the Gas inlet tube 33 Flow area 301, and radially outer air-flow is generated because of the impeller 4 operating, the air-flow mainly can be by the flow area 301 toward 318 outlet air of air outlet.Wherein, a part of the air-flow, can be via the hole for being formed in the porous plate 32 329, into the noise reduction cavity 302.Issuable specific noise frequency when the impeller 4 being cooperated to operate is able to using making Specific kenel is presented in the noise reduction cavity 302, or in the way of change 302 volume of noise reduction cavity, avoids generating specific Resonant frequency.In addition to this, the air-flow that the noise reduction cavity 302 is entered via described hole 329, can also generate dispersion effect, It avoids concentrating on specific position and generates wind cutting, also can further reach the effect of noise reduction.

It is a second embodiment of the utility model noise-reducing fan device refering to Fig. 6, the second embodiment and described the One embodiment the difference is that: be also set to sound absorber 5 in the noise reduction cavity 302 comprising one, and the sound absorber 5 is preferable It is using porous material.For the first embodiment, the second embodiment is implemented in addition to that can reach described first Outside the noise reduction effect of example, moreover it is possible to noise is further absorbed by the sound absorber 5, to cooperate the operating of impeller 4 to generate Specific frequency reaches more preferably noise reduction effect according to demand.In addition, the sound absorber 5 is filled in the noise reduction cavity 302, Also the volume and kenel for changing the noise reduction cavity 302 can be adjusted with relatively simple filling means, reaches the cooperation shell list Member 3 kenel and adjust, to avoid generate resonant frequency purpose.

Be a 3rd embodiment of the utility model noise-reducing fan device refering to Fig. 7 and Fig. 8, the 3rd embodiment with The first embodiment the difference is that: the pedestal 312 has the one end for being located remotely from the clamshell 311, and has one In the bottom plate 316 of the perforation 317 of penetration state, the Gas inlet tube 33 is to be connected to the perforation 317.The 3rd embodiment phase For the first embodiment, it is only that the link position of the Gas inlet tube 33 is different, equally can pass through fraction from institute The mode that flow area 301 flow to the noise reduction cavity 302 is stated, noise reduction effect identical with the first embodiment is reached.

It is a fourth embodiment of the utility model noise-reducing fan device refering to Fig. 9, the fourth embodiment and described the One embodiment the difference is that: the shell 31 of the outer cover unit 3, which has, one to be divided along the axis A with the porous plate 32 Not Wei Yu the impeller 4 two opposite sides perforation 315, the Gas inlet tube 33 be connected to it is described perforation 315.That is, On the basis of the position of the impeller 4, the porous plate 32 is be located at the impeller 4 opposite two with the Gas inlet tube 33 Side, making the noise reduction cavity 302 then is the opposite side for being located at the Gas inlet tube 33.The fourth embodiment is compared to described first It is to be that the position of the noise reduction cavity 302 is different, in addition to being able to reach identical drop for embodiment and the 3rd embodiment It makes an uproar outside effect, moreover it is possible to the selection of user's another kind be provided, be able to cooperate other equipment to improve the utility model noise-reducing fan device The wide usage used.

Claims (7)

1. a kind of noise-reducing fan device, it is characterised in that: the noise-reducing fan device includes:

Outer cover unit, including defining the shell of installation space, the installation space being divided into the gas along an axis interval It flows area and noise reduction cavity and there is the porous plate of multiple holes and be connected to the Gas inlet tube of the flow area, the shell has edge The air outlet that the direction of the vertical axis opens up；And

Impeller is installed in the flow area, and generation air-flow can be rotated as axle center using the axis, is made in the flow area Fraction flow to the noise reduction cavity via multiple holes on the porous plate.

2. noise-reducing fan device according to claim 1, it is characterised in that: the shell of the outer cover unit, which has, surrounds institute Flow area and the clamshell with side opening are stated, and is connected to the clamshell and surrounds the pedestal of the noise reduction cavity, the porous plate It is to be set between the clamshell and the pedestal, and there is the inner hole in penetration state, the Gas inlet tube is to be connected to the inner hole.

3. noise-reducing fan device according to claim 1, it is characterised in that: the shell of the outer cover unit, which has, surrounds institute It states flow area and there is the clamshell of side opening, be connected to the clamshell and surround the pedestal of the noise reduction cavity, the porous plate is It is set between the clamshell and the pedestal, the pedestal has the one end for being located remotely from the clamshell, and having is in penetration state Perforation bottom plate, the Gas inlet tube is to be connected to the perforation.

4. noise-reducing fan device according to claim 1, it is characterised in that: the shell of the outer cover unit has along described Axis and the perforation that two opposite sides of the impeller are located at the porous plate, the Gas inlet tube are to be connected to described wear Hole.

5. according to claim 1 to noise-reducing fan device described in 4 any claims, it is characterised in that: also comprising being set to Sound absorber in the noise reduction cavity.

6. noise-reducing fan device according to claim 5, it is characterised in that: the sound absorber is porous material.

7. according to claim 1 to noise-reducing fan device described in 4 any claims, it is characterised in that: the outer cover unit It further include being set to the air outlet and the conducting element for guiding outlet air.