CN206000788U - A kind of blower fan deafener of household electrical appliance - Google Patents
A kind of blower fan deafener of household electrical appliance Download PDFInfo
- Publication number
- CN206000788U CN206000788U CN201620911409.3U CN201620911409U CN206000788U CN 206000788 U CN206000788 U CN 206000788U CN 201620911409 U CN201620911409 U CN 201620911409U CN 206000788 U CN206000788 U CN 206000788U
- Authority
- CN
- China
- Prior art keywords
- passage
- blower fan
- deafener
- electrical appliance
- household electrical
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
This utility model is related to a kind of blower fan deafener of household electrical appliance, including the noise reduction assembly on the air intake passage being arranged on blower fan, it is characterized in that the outlet of described air intake passage connects hood, described hood catch covers on the air inlet end face of described blower fan, and has cavity between the air inlet end face of described hood and described blower fan.Preferably described inlet channel includes first paragraph passage, second segment passage and the 3rd section of passage being sequentially connected；The linkage section passage that wherein first paragraph passage has horn mouth and connects described bell-mouthed portlet, the bore of described linkage section passage bell-mouthed small-bore is adapted with described；Described noise reduction assembly is arranged in described second segment passage；Described 3rd section of passage is curved channel.This utility model noise reduction is notable and air inlet is smooth.
Description
Technical field
This utility model is related to household appliance technical field field, refer specifically to a kind of for reducing the institute of the blower fan in household electrical appliance
The deafener of the noise producing.
Background technology
Blower fan is typically used in various electric equipments, for example gas heater, air-conditioning, kitchen hood etc., blower fan
Operation can produce noise, brings noise pollution.
Traditional noise-reduction method mainly blower fan is placed in cover body, or directly on blower fan, one layer of parcel disappears
Sound cotton；But it is bad that this method is easily caused fan radiating.
Or also have using setting silencing apparatus, such as wire netting, silencing cotton etc. on the air intake passage of blower fan.But it is golden
Belong to network capacity easily blocked, lead to air intake resistance to increase；Likewise, silencing cotton also can increase air intake resistance, thus can produce bigger
Noise.
Content of the invention
Technical problem to be solved in the utility model is that present situation for prior art provides one kind can effectively reduce to make an uproar
Sound and air channel, the blower fan deafener using the good household electrical appliance of wholesomeness will not be blocked.
This utility model solves the technical scheme that adopted of above-mentioned technical problem：The blower fan noise reduction of this household electrical appliance
Device, including inlet channel with the noise reduction assembly being arranged in inlet channel it is characterised in that the outlet of described inlet channel connects
There is the opening hood inside with cavity, cover on connected blower fan air inlet end face for detaining.
The structure of described inlet channel can have multiple, and preferably, described inlet channel includes the first paragraph being sequentially connected
Passage, second segment passage and the 3rd section of passage；
Wherein first paragraph passage includes interconnective horn mouth and linkage section passage, and described linkage section passage is connected to institute
State between bell-mouthed portlet and described second segment passage；
Described noise reduction assembly is arranged in described second segment passage；
Described 3rd section of passage is curved channel.
Described noise reduction assembly is preferably silencing cotton；The periphery of described silencing cotton is fitted in the medial wall of described second segment passage
On, the middle part of described silencing cotton is evenly equipped with multiple passages, and each described passage all connects described first paragraph passage and described
Three sections of passages.
Preferably described noise reduction assembly is located at the middle part of described second segment passage, the both ends of the surface of described noise reduction assembly and described the
Form first buffering area and second buffering area between two ports of two-stage nitration passage.The design of two relief areas and passage are joined
Close, define space mutation twice, form resistant noise-reducing structure, further increase noise reduction.
Described bell-mouthed maximum caliber is equal with second segment channel diameter, described first paragraph passage small-bore and described
Linkage section passage and the equal diameters of described 3rd section of passage.
A diameter of 60～80mm of described second segment passage；A diameter of 30～50mm of described 3rd section of passage；Described
The outlet of three sections of passages connects the side wall of described hood.
The aperture of described passage is 10～20mm.
Such scheme is obtained in that further noise reduction, and can be adapted to narrow space in water heater well.
The air inlet end face just to described blower fan for the preferably described cavity, so that air-flow enters in blower fan more in an orderly manner.
For convenience of the connection of hood and blower fan, the periphery of described hood has outside turnover for connecting described blower fan
Air inlet end face flanging.
Compared with prior art, hood design is tool by the blower fan deafener of household electrical appliance provided by the utility model
Have the hatch frame of cavity, buckle closure on blower fan air intake end face, can not only shielding noise propagation, and to enter blower fan gas
Stream has rectified action, makes airflow smooth enter blower fan, reduce further noise；Noise transmission passage is utilized in preferred version
Mutation formed resistant noise-reducing device, using silencing cotton formed resistive muffler, both coordinate noise reduction notable；And this practicality
New by air inlet be designed as horn mouth, between hood and blower fan air inlet end face setting cavity and arc the 3rd section of passage
Design, not only makes air inlet smooth, and can carry out rectification to charge air flow, be allowed to enter in order blower fan, it is to avoid sinuous flow institute
The noise producing.
Brief description
Fig. 1 is the floor map of this utility model embodiment assembling structure；In figure arrow is air-flow direction；
Fig. 2 is the longitudinal sectional view (locally) of this utility model embodiment；In figure arrow is noise transmission direction；
Fig. 3 is the longitudinal sectional view (side-looking direction) of hood and blower fan assembling structure in this utility model embodiment；In figure
Arrow is noise transmission direction；
Fig. 4 is the longitudinal sectional view (positive apparent direction) of hood and blower fan assembling structure in this utility model embodiment；In figure
Arrow is noise transmission direction；
Fig. 5 is the perspective view of noise reduction assembly in this utility model embodiment.
Specific embodiment
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
As shown in Figures 1 to 5, the blower fan deafener of this household electrical appliance includes：
Hood 3, is opening peviform, and button covers on the air intake end face of blower fan 4, and its periphery has the flanging 32 of outside turnover,
Flanging 32 is connected on the air intake end face of blower fan 4 by screw 31, and the internal cavities 33 of hood 3 are just to blower fan 4 air intake end face.
Air intake passage 1, including the first paragraph passage 11 being sequentially connected, second segment passage 12 and the 3rd section of passage 13.
Wherein first paragraph passage 11 has horn mouth 111 and connects the linkage section passage 112 of the portlet of horn mouth 111,
The bore of linkage section passage 112 is small-bore equal with horn mouth 111；Bell-mouthed maximum caliber is 68mm, and lowest calibre is
39mm.
Second segment passage 12 is cylindrical structure, and bore is 68mm.
3rd section of passage 13 is curved channel, forms the breeze way of air-flow；The port of the 3rd section of passage 13 is connected to hood 3
Side wall on, and connect cavity 33.
Noise reduction assembly 2, is made up of silencing cotton, is filled in second segment passage 12, the periphery of silencing cotton is fitted in second segment
On the medial wall of passage 12, the middle part of silencing cotton is evenly equipped with multiple passages 21, and each passage 21 all connects first paragraph passage 11
With the 3rd section of passage 13；In the present embodiment, noise reduction assembly 2 be located at second segment passage 12 middle part, the both ends of the surface of noise reduction assembly 2 with
Form first buffering area 121 and second buffering area 122 between two ports of second segment passage 12；The aperture of passage 21 is
15mm.
Blower fan work, the air in environment enters via the horn mouth of first paragraph passage, and air intake is smooth, does not have resistance, and
Be conducive to increasing air inflow；Then enter the 3rd section of passage via passage each in silencing cotton, in the 3rd section of passage of arc
Enter after carrying out rectification in the cavity between hood and blower fan air intake end face, then sucked by blower fan；Air-flow is through the 3rd section of passage
Effectively prevent the generation of sinuous flow after rectification, make air-flow enter blower fan in order, thus avoiding the noise that sinuous flow is led to.
Inversely in airflow direction, noise is propagated to inlet channel via cavity for the direction of propagation of the noise that blower fan produces.Make an uproar
Sound is being entered first buffering area, is being entered each passage by first buffering area, enters second by each passage and delay by the 3rd section of passage
Rush area and first paragraph passage is entered by second buffering area, communication space all undergos mutation, form resistant noise-reducing device, the changing of impedance
Becoming and so that acoustic energy is produced reflection and interfere, thus reducing from acoustic filter to extraradial acoustic energy, eliminating the sound wave of band segment；And disappear
Sound cotton forms resistive muffler, and sound wave, in passage, is sponged medium-high frequency noise by silencing cotton.
Resistive muffler and the cooperation of resistant noise-reducing device, noise reduction is notable.
Claims (9)
1. the blower fan deafener of a kind of household electrical appliance, including inlet channel (1) with the noise reduction group that is arranged in inlet channel (1)
Part (2), it is characterised in that the outlet of described inlet channel (1) is connected with the opening hood (3) inside with cavity (33), is used
Cover on connected blower fan (4) air inlet end face to detain.
2. the blower fan deafener of household electrical appliance according to claim 1 is it is characterised in that described inlet channel (1) includes
First paragraph passage (11), second segment passage (12) and the 3rd section of passage (13) being sequentially connected；
Wherein first paragraph passage (11) includes interconnective horn mouth (111) and linkage section passage (112), and described linkage section leads to
Road (112) is connected between the portlet of described horn mouth (111) and described second segment passage (12)；
Described noise reduction assembly (2) is arranged in described second segment passage (12)；
Described 3rd section of passage (13) is curved channel.
3. the blower fan deafener of household electrical appliance according to claim 2 is it is characterised in that described noise reduction assembly (2) is to disappear
Sound cotton；The periphery of described silencing cotton is fitted on the medial wall of described second segment passage (12), and the middle part of described silencing cotton is uniform
There are multiple passages (21), each described passage (21) all connects described first paragraph passage (11) and described 3rd section of passage
(13).
4. the blower fan deafener of household electrical appliance according to claim 3 is it is characterised in that described noise reduction assembly (2) is located at
Two ends of the middle part of described second segment passage (12), the both ends of the surface of described noise reduction assembly (2) and described second segment passage (12)
Form first buffering area (121) and second buffering area (122) between mouthful.
5. household electrical appliance according to claim 4 blower fan deafener it is characterised in that described horn mouth (111)
Heavy caliber and second segment passage (12) equal diameters, the small-bore and described linkage section passage of described first paragraph passage (11)
(112) and described 3rd section of passage (13) equal diameters.
6. the blower fan deafener of household electrical appliance according to claim 5 is it is characterised in that described second segment passage (12)
A diameter of 60～80mm；A diameter of 30～50mm of described 3rd section of passage (13)；The outlet of described 3rd section of passage (13)
Connect the side wall of described hood (3).
7. the blower fan deafener of household electrical appliance according to claim 6 is it is characterised in that the hole of described passage (21)
Footpath is 10～20mm.
8. the blower fan deafener of the household electrical appliance according to claim 1 to 7 any claim is it is characterised in that described
The air inlet end face just to described blower fan (4) for the cavity (33).
9. the blower fan deafener of household electrical appliance according to claim 8 is it is characterised in that on the periphery of described hood (3)
There is the flanging (32) of outside turnover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620911409.3U CN206000788U (en) | 2016-08-19 | 2016-08-19 | A kind of blower fan deafener of household electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620911409.3U CN206000788U (en) | 2016-08-19 | 2016-08-19 | A kind of blower fan deafener of household electrical appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206000788U true CN206000788U (en) | 2017-03-08 |
Family
ID=58196704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620911409.3U Active CN206000788U (en) | 2016-08-19 | 2016-08-19 | A kind of blower fan deafener of household electrical appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206000788U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404343A (en) * | 2018-10-12 | 2019-03-01 | 意诺科技有限公司 | A kind of silencing means, sound-attenuating system and cleaning equipment |
| WO2022166156A1 (en) * | 2021-02-07 | 2022-08-11 | 李卫东 | Silencing device for fan, and fan |
-
2016
- 2016-08-19 CN CN201620911409.3U patent/CN206000788U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404343A (en) * | 2018-10-12 | 2019-03-01 | 意诺科技有限公司 | A kind of silencing means, sound-attenuating system and cleaning equipment |
| WO2022166156A1 (en) * | 2021-02-07 | 2022-08-11 | 李卫东 | Silencing device for fan, and fan |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107345679B (en) | Noise reduction device and range hood with same | |
| CN206000788U (en) | A kind of blower fan deafener of household electrical appliance | |
| CN206035615U (en) | Novel silencing device | |
| CN106468197A (en) | A kind of wideband noise-reducing silencer | |
| CN204627718U (en) | A kind of motor silencer | |
| CN202833034U (en) | Silencer with double sound eliminating functions | |
| CN103982469B (en) | A kind of for the denoising draught fan spiral case in smoke exhaust ventilator | |
| CN204003648U (en) | A kind of blower fan import baffler | |
| CN206530392U (en) | A kind of general gasoline generator muffler | |
| CN202348376U (en) | Mesh-shaped inner cylinder silencer | |
| CN105332953A (en) | Silencer for draught fan inlet | |
| CN201574802U (en) | Silencer | |
| CN201818348U (en) | Hydraulic muffler for excavator | |
| CN214997858U (en) | Improved generation convolution muffler | |
| CN206338099U (en) | A kind of wideband noise-reducing silencer | |
| CN104913359A (en) | Double-volute range hood | |
| CN206617215U (en) | A kind of MPV exhaust silencer devices | |
| CN102330588B (en) | Strip silencer | |
| CN208918659U (en) | Muffler assembly | |
| CN104265413A (en) | Impedance complex silencer for tractor | |
| CN207686792U (en) | A kind of automobile-used impedance composite clampshell silencer | |
| CN104481760B (en) | A kind of intake muffler | |
| CN204457945U (en) | Mobile muffler | |
| CN107725147A (en) | A kind of Novel silencing device | |
| CN204862710U (en) | Soybean milk machine of making an uproar falls in exhaust |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |