CN205025820U - Volute component , fan and air conditioner - Google Patents
Volute component , fan and air conditioner Download PDFInfo
- Publication number
- CN205025820U CN205025820U CN201520652831.7U CN201520652831U CN205025820U CN 205025820 U CN205025820 U CN 205025820U CN 201520652831 U CN201520652831 U CN 201520652831U CN 205025820 U CN205025820 U CN 205025820U
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- spiral case
- case assembly
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Abstract
The utility model provides a volute component, fan and air conditioner. According to the utility model discloses a volute component, including the spiral case body, the snail tongue department of the spiral case body is provided with the amortization groove, and the amortization groove coats to be stamped inhales the sound membrane in order to form the amortization chamber in the amortization groove. According to the utility model discloses a volute component, fan and air conditioner, the department is provided with the amortization groove through the snail tongue to coating to be stamped in the amortization groove and inhaling the sound membrane, make to form the amortization chamber on the spiral case body, in the working process, the noise through modes such as reflection, absorption, frictions, can effectively consume partly noise energy through inhaling during the sound membrane gets into the amortization chamber, thus the noise reduction.
Description
Technical field
The utility model relates to field of air conditioning, in particular to a kind of spiral case assembly, blower fan and air-conditioning.
Background technique
In prior art, generally there is the problem of the following aspects in centrifugal blower:
1, centrifugal blower rotational noise is large, affects sound quality;
2, in prior art, also have and adopt oblique snail tongue or other schemes to a certain degree can reduce discrete noise, but cannot meet the user's request day by day promoted, in addition, oblique snail tongue technological forming causes model more complicated.
Model utility content
The utility model aims to provide a kind of spiral case assembly, blower fan and the air-conditioning that can reduce noise.
The utility model provides a kind of spiral case assembly, comprises volute body, and the snail tongue place of volute body is provided with silencing groove, silencing groove is coated with absorptive membrane to form silencing cavity in silencing groove.
Further, absorptive membrane is provided with multiple sound-absorption hole.
Further, sound-absorption hole flare, and the large end face of sound-absorption hole is positioned at absorptive membrane front.
Further, the maximum diameter of sound-absorption hole is D, and λ/9≤D≤λ/11, wherein, λ is target noise reduction frequency wavelength.
Further, spiral case assembly also comprises the first sound absorbing material be arranged in silencing cavity.
Further, there is between the front of the first sound absorbing material and the back side of absorptive membrane the first gap, or between the back side of the first sound absorbing material and the bottom of silencing groove, there is the second gap, or there is the first gap and the second gap simultaneously.
Further, the first sound absorbing material is polyester fibre.
Further, the back side of absorptive membrane is provided with the second sound absorbing material of preset thickness.
The utility model additionally provides a kind of blower fan, comprises aforesaid spiral case assembly.
The utility model additionally provides a kind of air-conditioning, comprises aforesaid spiral case assembly.
According to spiral case assembly of the present utility model, blower fan and air-conditioning, by snail tongue, place is provided with silencing groove, and absorptive membrane is coated with on silencing groove, make volute body forms silencing cavity, in working procedure, noise enters in silencing cavity by absorptive membrane, by modes such as reflection, absorption, frictions, can effectively consume a part of noise energy, thus reduce noise.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the decomposition texture schematic diagram according to spiral case assembly of the present utility model;
Fig. 2 is the main TV structure schematic diagram according to spiral case assembly of the present utility model;
Fig. 3 is longitudinal sectional structure schematic diagram of Fig. 2;
Fig. 4 is the first horizontal sectional structure schematic diagram of Fig. 2;
Fig. 5 is the second horizontal sectional structure schematic diagram of Fig. 2;
Fig. 6 be in Fig. 2 A-A to sectional structure schematic diagram;
Fig. 7 is the partial enlargement structural representation at label B place in Fig. 6;
Fig. 8 is according to the main TV structure schematic diagram of volute body of the present utility model;
Fig. 9 is longitudinal sectional structure schematic diagram of Fig. 8;
Figure 10 is the first horizontal sectional structure schematic diagram of Fig. 8;
Figure 11 is the second horizontal sectional structure schematic diagram of Fig. 8;
Figure 12 is according to the main TV structure schematic diagram of absorptive membrane of the present utility model;
Figure 13 is according to the side-looking structural representation of absorptive membrane of the present utility model;
Figure 14 is according to the sectional structure schematic diagram of absorptive membrane of the present utility model;
Figure 15 is the partial enlargement structural representation at label C place in Figure 14;
Description of reference numerals:
10, volute body; 11, silencing groove; 20, absorptive membrane; 21, sound-absorption hole; 30, the first sound absorbing material.
Embodiment
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
As shown in Figure 1, according to spiral case assembly of the present utility model, comprise volute body 10, the snail tongue place of volute body 10 is provided with silencing groove 11, silencing groove 11 is coated with absorptive membrane 20 to form silencing cavity in silencing groove 11.The utility model is by being provided with silencing groove at snail tongue place, and absorptive membrane is coated with on silencing groove, make volute body 10 forms silencing cavity, in working procedure, noise enters in silencing cavity by absorptive membrane, by modes such as reflection, absorption, frictions, effectively can consume a part of noise energy, thus reduce noise.
Particularly, shown in composition graphs 1 and Fig. 8 to 11, spiral case die cast, forms silencing groove 11 in snail tongue place molding cavity structure, thus installs absorptive membrane 20.More specifically, absorptive membrane 20 adopts easy-formation material, selects suitable thickness according to installing space, absorptive membrane 20 is provided with a large amount of sound-absorption hole 21, mutually interfere after each hole enters into the acoustic wave diffraction of silencing cavity, refraction, thus reach and reduce the effect of acoustic wave energy.
Preferably, shown in composition graphs 1 and Figure 12 to 15, sound-absorption hole 21 flare, and the large end face of sound-absorption hole 21 is towards sound source (being namely positioned at absorptive membrane 20 front), acoustic reflection superposition is eliminated the noise and eliminates the noise with the boundary friction in hole, sound source power is converted into thermal energy consumption, thus more effectively can eliminates acoustic wave energy.Further, the maximum diameter of sound-absorption hole 21 is D, and λ/9≤D≤λ/11, wherein, λ is target noise reduction frequency wavelength, and in this scope, sound-absorption hole 21 pairs of acoustic interference effects are better, further can reduce noise.
More preferably, spiral case assembly also comprises the first sound absorbing material 30 be arranged in silencing cavity, namely the first sound absorbing material 30 cooperation is arranged in silencing groove 11, first sound absorbing material 30 selects polyester fibre or the larger material of acoustic absorptivity, thus absorb the acoustic wave energy entering silencing cavity further, reduce noise.
Shown in composition graphs 1 and Fig. 2 to 7, in order to improve noise reduction further, certain air cavity can be retained in the front of the first sound absorbing material 30 or the back side, namely the first gap can be retained between the front of the first sound absorbing material 30 and the back side of absorptive membrane 20, or retain the second gap between the back side of the first sound absorbing material 30 and the bottom of silencing groove 11, or retain the first gap and the second gap simultaneously, also namely the first sound absorbing material 30 also not exclusively fills silencing cavity, thus make sound wave after the first sound absorbing material 30, consumed energy is continued through air dielectric friction, the wall simultaneously arriving silencing groove 11 reflects, continue to consume, further in sound-absorbing material internal consumption, separately air cavity thickness can be set according to the wavelength of frequency of noise elimination, ensure that sound wave is contrary with incident acoustic wave phase place after the reflection of silencing groove 11 wall, interfere and eliminate the noise.
Preferably, certain thickness second sound-absorbing material can also be set at absorptive membrane 20 back side, according to sound absorption Frequency Band Selection at the higher material of this frequency range acoustic absorptivity, the sound wave entered through sound-absorption hole 21 also can be avoided to reflect at rigid plane simultaneously, improves noise reduction further.
The utility model additionally provides a kind of blower fan, comprises aforesaid spiral case assembly, thus reduces noise.Usually, can be centrifugal blower, axial-flow blower, cross flow fan etc.,
The utility model additionally provides a kind of air-conditioning, comprises aforesaid spiral case assembly, thus reduces the noise of air-conditioning, makes air-conditioning quieter.
As can be seen from the above description, the utility model the above embodiments achieve following technique effect:
According to spiral case assembly of the present utility model, blower fan and air-conditioning, by snail tongue, place is provided with silencing groove, and absorptive membrane is coated with on silencing groove, make volute body forms silencing cavity, in working procedure, noise enters in silencing cavity by absorptive membrane, by modes such as reflection, absorption, frictions, can effectively consume a part of noise energy, thus reduce noise.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a spiral case assembly, comprise volute body (10), it is characterized in that, the snail tongue place of described volute body (10) is provided with silencing groove (11), described silencing groove (11) is coated with absorptive membrane (20) to form silencing cavity in described silencing groove (11).
2. spiral case assembly according to claim 1, is characterized in that,
Described absorptive membrane (20) is provided with multiple sound-absorption hole (21).
3. spiral case assembly according to claim 2, is characterized in that,
Described sound-absorption hole (21) flare, and the large end face of described sound-absorption hole (21) is positioned at described absorptive membrane (20) front.
4. the spiral case assembly according to Claims 2 or 3, is characterized in that,
The maximum diameter of described sound-absorption hole (21) is D, and λ/9≤D≤λ/11, wherein, λ is target noise reduction frequency wavelength.
5. spiral case assembly according to claim 1, is characterized in that,
Described spiral case assembly also comprises the first sound absorbing material (30) be arranged in described silencing cavity.
6. spiral case assembly according to claim 5, is characterized in that,
Between the front of described first sound absorbing material (30) and the back side of described absorptive membrane (20), there is the first gap, or between the back side of described first sound absorbing material (30) and the bottom of described silencing groove (11), there is the second gap, or there is described first gap and described second gap simultaneously.
7. spiral case assembly according to claim 6, is characterized in that,
Described first sound absorbing material (30) is polyester fibre.
8. spiral case assembly according to claim 1, is characterized in that,
The back side of described absorptive membrane (20) is provided with the second sound absorbing material of preset thickness.
9. a blower fan, comprises spiral case assembly, it is characterized in that, the spiral case assembly of described spiral case assembly according to any one of claim 1 to 8.
10. an air-conditioning, comprises spiral case assembly, it is characterized in that, the spiral case assembly of described spiral case assembly according to any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520652831.7U CN205025820U (en) | 2015-08-26 | 2015-08-26 | Volute component , fan and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520652831.7U CN205025820U (en) | 2015-08-26 | 2015-08-26 | Volute component , fan and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205025820U true CN205025820U (en) | 2016-02-10 |
Family
ID=55258358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520652831.7U Expired - Fee Related CN205025820U (en) | 2015-08-26 | 2015-08-26 | Volute component , fan and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205025820U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907351A (en) * | 2017-04-26 | 2017-06-30 | 广东美的制冷设备有限公司 | Spiral case, blower fan and air-conditioner |
| CN106968987A (en) * | 2017-04-12 | 2017-07-21 | 深圳市上羽科技有限公司 | A kind of special cross flow fan for radiating and noise being reduced of air-conditioning |
| CN109899321A (en) * | 2019-04-15 | 2019-06-18 | 无锡康明斯涡轮增压技术有限公司 | It can be effectively reduced the compressor of blade harmonic noise |
-
2015
- 2015-08-26 CN CN201520652831.7U patent/CN205025820U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968987A (en) * | 2017-04-12 | 2017-07-21 | 深圳市上羽科技有限公司 | A kind of special cross flow fan for radiating and noise being reduced of air-conditioning |
| CN106907351A (en) * | 2017-04-26 | 2017-06-30 | 广东美的制冷设备有限公司 | Spiral case, blower fan and air-conditioner |
| CN109899321A (en) * | 2019-04-15 | 2019-06-18 | 无锡康明斯涡轮增压技术有限公司 | It can be effectively reduced the compressor of blade harmonic noise |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20210826 |