CN205047485U - Fan back plate subassembly and fan - Google Patents
Fan back plate subassembly and fan Download PDFInfo
- Publication number
- CN205047485U CN205047485U CN201520710590.7U CN201520710590U CN205047485U CN 205047485 U CN205047485 U CN 205047485U CN 201520710590 U CN201520710590 U CN 201520710590U CN 205047485 U CN205047485 U CN 205047485U
- Authority
- CN
- China
- Prior art keywords
- blower fan
- board component
- sound
- back plate
- air outlet
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a fan back plate subassembly and fan. This fan back plate subassembly includes: the back plate, include with spiral case complex air outlet position, damping portion or inhale line installs in air outlet position department. Since the technical scheme is used, the utility model discloses usable damping portion or inhale line reduce wind carry to the excitation of back plate in order to reduce the vibration, still can reduce back plate low frequency noise radiation, improvement sound quality has simple structure, characteristics with low costs.
Description
Technical field
The utility model relates to blower fan field, board component and blower fan after a kind of blower fan.
Background technique
When designing, blower fan of the prior art does not consider that wind carries affects the excitation of rear plate, therefore, there is because air-flow velocity is larger the phenomenon that wind carries the rear plate of excitation at fan outlet, this can cause rear plate to produce vibration under excitation, produce low-frequency noise simultaneously, affect machine sound quality in cabinet.
Model utility content
Board component and blower fan after a kind of blower fan are provided in the utility model embodiment, with solve of the prior art go out after wind load excitation plate cause low-frequency noise problem.
For solving the problems of the technologies described above, the utility model embodiment provides board component after a kind of blower fan, comprising: rear plate, comprises the air outlet position coordinated with spiral case; Damper portion or sound-absorbing part, be arranged on air outlet position place.
As preferably, damper portion is made up of damping material.
As preferably, sound-absorbing part comprises acoustic board and absorptive membrane, and wherein, acoustic board is between absorptive membrane and rear plate, and acoustic board is made up of sound absorbing material.
As preferably, absorptive membrane is formed with sound attenuation hole.
As preferably, sound absorbing material is plastics.
As preferably, the air outlet position place of rear plate is formed with the muscle groove for installing damper portion or sound-absorbing part.
As preferably, muscle groove is formed by the mode of compacting.
The utility model additionally provides a kind of blower fan, comprises board component after spiral case and above-mentioned blower fan, and spiral case is arranged on the air outlet position place of the rear plate of board component after blower fan.
Owing to have employed technique scheme, the utility model can utilize damper portion or sound-absorbing part to reduce wind and carry the excitation of rear plate to reduce vibration, also can reduce the radiation of rear plate low-frequency noise, improvement sound quality, have the advantages that structure is simple, cost is low.
Accompanying drawing explanation
Fig. 1 is the explosive view of board component after the blower fan of the utility model embodiment;
Fig. 2 is the sectional view of board component after the blower fan of the utility model embodiment;
Fig. 3 is the plan view of board component after the blower fan of the utility model embodiment;
Fig. 4 is the A portion enlarged view of Fig. 2 of the utility model embodiment.
Description of reference numerals:
1, rear plate; 2, spiral case; 3, damper portion; 4, acoustic board; 5, absorptive membrane; 6, muscle groove; 7, motor mounting plate.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as to restriction of the present utility model.
Please refer to Fig. 1 to Fig. 4, the utility model provides board component after a kind of blower fan, comprising: rear plate 1, comprises the air outlet position coordinated with spiral case 2; Damper portion 3 or sound-absorbing part, be arranged on air outlet position place.
Owing to have employed technique scheme, the utility model can utilize damper portion or sound-absorbing part to reduce wind and carry the excitation of rear plate to reduce vibration, also can reduce the radiation of rear plate low-frequency noise, improvement sound quality, have the advantages that structure is simple, cost is low.
In a preferred embodiment, damper portion 3 is made up of damping material.Like this, air-out, through air outlet position, encourages damping material, thus vibration is converted into energy in damping material and is consumed, thus decreases the vibration reaching rear plate, thus reduces the noise radiation of rear plate.
In another preferred embodiment, sound-absorbing part comprises acoustic board 4 and absorptive membrane 5, and wherein, acoustic board 4 is between absorptive membrane 5 and rear plate 1, and acoustic board 4 is made up of sound absorbing material.Preferably, sound absorbing material is plastics.Like this, when air-out is through air outlet position, sound wave is rubbed by absorptive membrane 5 and its hole wall and consumes part energy, after absorptive membrane 5, sound wave enters the micropore of acoustic board 4, equally by rubbing and interfering superposition to consume acoustic wave energy, namely reduces vibration, and then reduce the vibration reaching rear plate, also reduce the vibration radiation of rear plate.
As preferably, absorptive membrane 5 is formed with sound attenuation hole.The sound attenuation hole of absorptive membrane is micropore, its can according to micropunch noise-cancelling theory, combine reduce frequency design, and sound absorbing material can select some easy-formation materials such as plastics, and has good weather resistance.
As preferably, the air outlet position place of rear plate 1 is formed with the muscle groove 6 for installing damper portion 3 or sound-absorbing part.Preferably, muscle groove 6 is formed by the mode of compacting.Like this, muscle groove 6 can be used for installing damping material or sound absorbing material.
The utility model additionally provides a kind of blower fan, comprises board component after spiral case 2 and above-mentioned blower fan, and spiral case 2 is arranged on the air outlet position place of the rear plate 1 of board component after blower fan.Preferably, described blower fan also comprises the motor mounting plate 7 be arranged in spiral case 2.
Owing to have employed technique scheme, the utility model can be adopted with vibration and noise reducing at centrifugal blower diffuser, thus reduce fluid structure interaction, promote complete machine sound quality.
Certainly, be more than preferred implementation of the present utility model.It should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model basic principle, can also make some improvements and modifications, these improvements and modifications are also considered as protection domain of the present utility model.
Claims (8)
1. a board component after blower fan, is characterized in that, comprising:
Rear plate (1), comprises the air outlet position coordinated with spiral case (2);
Damper portion (3) or sound-absorbing part, be arranged on described air outlet position place.
2. board component after blower fan according to claim 1, is characterized in that, described damper portion (3) is made up of damping material.
3. board component after blower fan according to claim 1, it is characterized in that, described sound-absorbing part comprises acoustic board (4) and absorptive membrane (5), wherein, described acoustic board (4) is positioned between described absorptive membrane (5) and described rear plate (1), and described acoustic board (4) is made up of sound absorbing material.
4. board component after blower fan according to claim 3, is characterized in that, (5) are formed with sound attenuation hole to described absorptive membrane.
5. board component after blower fan according to claim 3, is characterized in that, described sound absorbing material is plastics.
6. board component after blower fan according to claim 1, is characterized in that, the air outlet position place of described rear plate (1) is formed with the muscle groove (6) for installing described damper portion (3) or sound-absorbing part.
7. board component after blower fan according to claim 6, is characterized in that, described muscle groove (6) is formed by the mode of compacting.
8. a blower fan, is characterized in that, comprises board component after spiral case (2) and the blower fan according to any one of claim 1 to 7, and described spiral case (2) is arranged on the air outlet position place of the rear plate (1) of board component after described blower fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520710590.7U CN205047485U (en) | 2015-09-14 | 2015-09-14 | Fan back plate subassembly and fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520710590.7U CN205047485U (en) | 2015-09-14 | 2015-09-14 | Fan back plate subassembly and fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205047485U true CN205047485U (en) | 2016-02-24 |
Family
ID=55341068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520710590.7U Expired - Fee Related CN205047485U (en) | 2015-09-14 | 2015-09-14 | Fan back plate subassembly and fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205047485U (en) |
-
2015
- 2015-09-14 CN CN201520710590.7U patent/CN205047485U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20210914 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |