CN211011856U - Air duct shell, air conditioner indoor unit and air conditioner - Google Patents
Air duct shell, air conditioner indoor unit and air conditioner Download PDFInfo
- Publication number
- CN211011856U CN211011856U CN201921917930.8U CN201921917930U CN211011856U CN 211011856 U CN211011856 U CN 211011856U CN 201921917930 U CN201921917930 U CN 201921917930U CN 211011856 U CN211011856 U CN 211011856U
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- casing
- resonance
- acoustic energy
- shell
- air duct
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- 239000012528 membrane Substances 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 abstract description 9
- 230000009467 reduction Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
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Abstract
The utility model provides a wind channel casing, air conditioner. One of them kind of wind channel casing, including the first casing, the second casing, have many first support ribs on one side of the first casing, many first support ribs criss-cross form a plurality of first resonance chambers of separating each other, first resonance chamber has first opening, one side of first casing is kept away from towards first support rib to first opening, still include acoustic energy resonance consumption piece, acoustic energy resonance consumption piece covers and connects in first opening part, the second casing is connected in one side that acoustic energy resonance consumption piece kept away from the first casing, and have the vibration interval between second casing and the acoustic energy resonance consumption piece. The utility model provides a pair of wind channel casing, air conditioner, the noise energy in the wind channel casing can be absorbed to the acoustic energy resonance consumption piece on the first casing to promote the performance of making an uproar of giving sound insulation of wind channel casing.
Description
Technical Field
The utility model belongs to the technical field of air conditioning, concretely relates to wind channel casing, air conditioner.
Background
To meet the comfort requirement of the air conditioner, the air conditioner is often set to different air supply modes. For an air duct shell (shown in figure 1) of the disrotatory axial flow fan, the air duct shell can supply air in a subarea mode and can meet the air volume requirement through effective control. However, the fan system can bring about a serious noise problem and affect the quality of the air conditioner, the common noise reduction means is to add a noise reduction device at an inlet and an outlet, and certainly, a combined structure of soundproof cotton, a microporous plate and the like is arranged on an air duct shell to realize noise reduction, but the method has poor effect of reducing low-frequency noise, because the sound absorption material has almost no sound absorption effect at the noise frequency of 600Hz or below, but the low-frequency noise is easy to spread and not easy to attenuate, and plays a main contribution to the total value of the whole machine noise; meanwhile, when sound waves are transmitted into the silencing structure through the hole structure to be consumed, airflow can be transmitted through the hole structure, and therefore the pneumatic performance of the fan is affected.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model is to provide an air duct casing, air conditioner, the noise energy in the air duct casing can be absorbed to the acoustic energy resonance consumption piece on the first casing, thereby promotes the performance of making an uproar falls in giving sound insulation of air duct casing.
In order to solve the above problem, the utility model provides an air duct shell, including first casing, second casing, many first support muscle have on one side of first casing, many first support muscle vertically and horizontally staggered forms a plurality of first resonance chambers of separating each other, first resonance chamber has first opening, first opening orientation first support muscle is kept away from one side of first casing still includes acoustic energy resonance consumption piece, acoustic energy resonance consumption piece cover connect in first opening part, the second casing connect in acoustic energy resonance consumption piece is kept away from one side of first casing, just the second casing with the vibration interval has between the acoustic energy resonance consumption piece.
Preferably, the acoustic energy resonance consumable comprises an elastic membrane.
Preferably, the elastic film is stretched over the first support rib connected to the first opening.
Preferably, the acoustic energy resonance dissipative element further comprises a mass, which is connected to the elastic membrane.
Preferably, the mass comprises a magnet and a mass powder adsorbed on the magnet.
Preferably, a plurality of second supporting ribs are arranged on one side of the second housing facing the first housing, the second supporting ribs are criss-cross to form a plurality of second resonant cavities separated from each other, the second resonant cavities have second openings, and the second openings are arranged corresponding to the first openings and can clamp the acoustic energy resonance consumers.
Preferably, the plurality of first resonant cavities at least includes a plurality of first natural frequency resonant cavities and a plurality of second natural frequency resonant cavities.
Preferably, the first casing is cylindrical, and a plurality of the first natural frequency resonance cavities and a plurality of the second natural frequency resonance cavities are alternately arranged in the axial direction of the first casing; alternatively, a plurality of the first natural frequency resonant cavities and a plurality of the second natural frequency resonant cavities are alternately arranged at intervals in the circumferential direction of the first casing; alternatively, a plurality of the first natural frequency resonant cavities are uniformly arranged at intervals along the circumferential direction of the first shell; alternatively, a plurality of the second natural frequency resonant cavities are arranged at regular intervals along the circumferential direction of the first housing.
The utility model also provides an air conditioner, including foretell wind channel casing.
The utility model also provides an air conditioner, including foretell air conditioner indoor unit.
The utility model provides a pair of wind channel casing, air conditioner, first resonance chamber with acoustic energy resonance consumption piece combined action is to the via noise in the wind channel casing that first casing passed is absorbed, is kept apart, simultaneously first casing and second casing are in respectively the both sides of acoustic energy resonance consumption piece can form dual sound barrier to the noise in the wind channel casing, and the maintenance of vibration interval can be guaranteed the resonance range of acoustic energy resonance consumption piece, and then promote the sound insulation of wind channel casing falls the performance of making an uproar.
Drawings
FIG. 1 is a schematic view of an assembly of a conventional counter-rotating axial flow fan and an air duct;
fig. 2 is a schematic cross-sectional structure view of an air duct casing according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a partial structural view of the first resonant cavity of FIG. 2;
fig. 5 is a top view of fig. 4.
The reference numerals are represented as:
11. a first housing; 12. a first support rib; 13. a first resonant cavity; 14. a second housing; 15. a second support rib; 16. a second resonant cavity; 2. an acoustic resonance consumable; 21. an elastic film; 22. a mass block; 100. an air duct housing; 101. a first axial fan; 102. and a second axial fan.
Detailed Description
Referring to fig. 2 to 5 in combination, according to an embodiment of the present invention, there is provided an air duct housing, including a first housing 11, a second housing 14, a plurality of first supporting ribs 12 are provided on one side surface of the first housing 11, a plurality of first supporting ribs 12 are criss-cross to form a plurality of first resonant cavities 13 separated from each other, the first resonant cavities 13 have first openings facing a side of the first supporting ribs 12 away from the first housing 11, and further include an acoustic resonance consumable 2, the acoustic resonance consumable 2 is connected to the first openings in a covering manner, the second housing 14 is connected to a side of the acoustic resonance consumable 2 away from the first housing 11, and a vibration gap is provided between the second housing 14 and the acoustic resonance consumable 2, a size of a gap formed between the criss-cross first supporting ribs 12 may be regular, the regularity may not be provided, so that the first resonant cavity 13 which cannot be volumetrically and differently shaped can be formed, and it can be further ensured that the resonant frequency of the acoustic energy resonance consumable 2 can be different and has a larger resonant consumption frequency section. In this technical solution, the first resonant cavity 13 and the acoustic energy resonance consumption member 2 act together to absorb and isolate the noise in the air duct housing transmitted through the first housing 11, and the first housing 11 and the second housing 14 are respectively located at two sides of the acoustic energy resonance consumption member 2, so as to form a double sound barrier for the noise in the air duct housing, and the maintenance of the vibration distance can ensure the resonance amplitude of the acoustic energy resonance consumption member 2, thereby improving the sound insulation and noise reduction performance of the air duct housing. It can be understood that one of the first casing 11 and the second casing 14 is close to the air flow (i.e. the fan side) of the air duct, and the other one is used as the outer side of the air duct casing, and preferably, the side of the first casing 11 facing the air flow flowing side of the air duct is a smooth surface, rather than a plurality of perforations in the prior art, thereby effectively eliminating the adverse effect on the aerodynamic performance of the air flow while reducing noise.
The acoustic energy resonance consumable 2 may be, for example, a flexible cantilever beam, one end of the cantilever beam is fixedly connected to the cavity wall of the first resonance cavity 13, and the other end of the cantilever beam is in a free cantilever state, preferably, the other end may be designed into a spherical shape, so as to ensure that the spherical other end of the cantilever beam can perform reciprocating simple harmonic motion around the one end under the excitation of acoustic wave energy after the acoustic wave is propagated into the first resonance cavity 13, so as to convert the acoustic wave energy into kinetic energy of the cantilever beam for consumption, thereby achieving the purpose of sound insulation and noise reduction of the air duct shell; the acoustic energy resonance consumable 2 may further include an elastic membrane 21, where the elastic membrane 21 has the same function as the cantilever beam and is designed to generate resonance and then convert the energy of the acoustic wave into its own vibration kinetic energy for consumption, and the noise reduction frequency value or frequency band of the air duct housing can be determined by flexibly limiting the internal tension of the elastic membrane 21 after installation (i.e. the elastic stiffness K of the elastic membrane 21). Specifically, the elastic film 21 may be an integral elastic film with a larger area, and at this time, the elastic film with a larger area may cover a plurality of the first resonance cavities 13 at the same time, which may greatly simplify the manufacturing process of the air duct housing, but such a manner results in that after the same elastic film is covered and connected, the elastic rigidities of the corresponding elastic films for the covered first resonance cavities 13 are the same, and if it is required to ensure that the noise reduction frequency of the air duct housing is richer, the best elastic film with a larger area may be distributed in a plurality of areas, and the elastic rigidities of the elastic films with a larger area corresponding to each area are different; of course, the elastic film 21 may also be designed for each first resonant cavity 13, and the elastic stiffness of the elastic film 21 corresponding to each first resonant cavity 13 is different, so that the sound insulation frequency range of the air duct housing is wider, that is, the sound insulation and noise reduction effects are better.
Preferably, the elastic film 21 is stretched over the first supporting rib 12 connected to the first opening, for example, the elastic film 21 is adhered to the first opening to close the first resonant cavity 13.
Further, the acoustic energy resonatesThe consumable 2 further comprises a mass 22, the mass 22 is connected to the elastic membrane 21, and the mass 22 may be formed integrally with the elastic membrane 21 or assembled together to form a whole. In this case, the first resonant cavity 13 and the acoustic resonance consumer 2 form a local resonance unit, which is similar to a spring-mass system with its natural frequency
Wherein K is the stiffness of the elastic membrane and M is the mass of the mass block. When the natural frequency of the local resonance unit is consistent with the air vibration frequency caused by sound waves, the air vibration energy can be converted into the vibration energy of the elastic film and the mass block, so that the sound insulation and noise reduction effects are achieved. When a series of local resonance units with different natural frequencies are arranged, noise reduction of a certain frequency band can be realized. Therefore, noise reduction of different target frequency bands can be realized by reasonably designing the natural frequencies of different local resonance units, and effective sound insulation of low-frequency noise with any specific frequency can be realized.
The natural frequency of the resonant cells is designed in various ways. One is to adjust K, the elastic membrane of each local resonance unit provides different pretightening forces before installation so as to obtain different tensions, thus obtaining different rigidities, or obtaining different rigidities by selecting different elastic membrane materials; for adjusting the mass, for example, the mass block 22 includes a magnet and mass powder adsorbed on the magnet, and preferably, the magnet is implemented by an electromagnet, and the electromagnetic force of the magnet can be changed by changing the current of the electromagnet, so as to adsorb mass powder with different mass, and it can be understood that the magnitude of the current is determined according to the resonant frequency of the acoustic energy resonance consumable 2 corresponding to each of the first resonant cavities 13, and the mass powder should be powder capable of being adsorbed by magnetic force, such as iron powder.
Preferably, the second housing 14 has a plurality of second support ribs 15 on a side facing the first housing 11, the plurality of second support ribs 15 are criss-crossed to form a plurality of second resonant cavities 16 separated from each other, the second resonant cavity 16 has a second opening, the second opening is disposed corresponding to the first opening and can clamp the acoustic energy resonance consumable 2, that is, the second opening and the lip of the first opening can clamp the elastic membrane 21 in the acoustic energy resonance consumable 2, and more importantly, the second resonant cavity 16 forms a containing space for the mass of powder, and the magnet is located in the second resonant cavity 16.
In order to make the sound-insulating and noise-reducing frequency band of the air duct casing wider, preferably, the plurality of first resonant cavities 13 at least include a plurality of first natural frequency resonant cavities and a plurality of second natural frequency resonant cavities, and when the first casing 11 is cylindrical, the plurality of first natural frequency resonant cavities and the plurality of second natural frequency resonant cavities are alternately arranged in the axial direction of the first casing 11; alternatively, a plurality of the first natural frequency resonant cavities and a plurality of the second natural frequency resonant cavities are alternately arranged at intervals in the circumferential direction of the first housing 11; alternatively, a plurality of the first natural frequency resonant cavities are uniformly spaced along the circumferential direction of the first housing 11; alternatively, a plurality of the second natural frequency resonant cavities are arranged at regular intervals along the circumferential direction of the first housing 11.
According to the utility model discloses an embodiment still provides an air conditioner, including foretell wind channel casing.
According to the utility model discloses an embodiment still provides an air conditioner, including foretell air conditioner indoor unit.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An air duct shell is characterized by comprising a first shell (11) and a second shell (14), wherein a plurality of first supporting ribs (12) are arranged on one side surface of the first shell (11), the plurality of first supporting ribs (12) are criss-cross to form a plurality of first resonance cavities (13) which are separated from each other, the first resonance cavities (13) are provided with first openings facing to one sides, away from the first shell (11), of the first supporting ribs (12), an acoustic energy resonance consumption piece (2) is further included, the acoustic energy resonance consumption piece (2) is connected to the first openings in a covering mode, the second shell (14) is connected to one side, away from the first shell (11), of the acoustic energy resonance consumption piece (2), and a vibration distance is reserved between the second shell (14) and the acoustic energy resonance consumption piece (2).
2. Air duct housing according to claim 1, characterized in that the acoustic resonance consumers (2) comprise an elastic membrane (21).
3. The air duct casing according to claim 2, characterized in that the elastic membrane (21) is stretched over the first support rib (12) connected to the first opening.
4. Air duct housing according to claim 2, characterized in that the acoustic energy resonance consumer (2) further comprises a mass (22), the mass (22) being connected to the elastic membrane (21).
5. The air duct housing according to claim 4, characterized in that the mass (22) comprises a magnet and a mass powder adsorbed on the magnet.
6. The air duct casing according to claim 1, characterized in that the second casing (14) has a plurality of second supporting ribs (15) on a side facing the first casing (11), the second supporting ribs (15) are criss-crossed to form a plurality of second resonance chambers (16) separated from each other, the second resonance chambers (16) have second openings, and the second openings are arranged corresponding to the first openings and can clamp the acoustic energy resonance consumers (2).
7. The air duct housing according to any of claims 1 to 6, characterized in that the plurality of first resonant cavities (13) comprises at least a plurality of first natural frequency resonant cavities and a plurality of second natural frequency resonant cavities.
8. The air duct casing according to claim 7, wherein the first casing (11) is cylindrical, and a plurality of the first natural frequency resonance chambers and a plurality of the second natural frequency resonance chambers are alternately arranged in the axial direction of the first casing (11); alternatively, a plurality of said first natural frequency resonant cavities and a plurality of said second natural frequency resonant cavities are alternately arranged at intervals in the circumferential direction of said first housing (11); alternatively, a plurality of the first natural frequency resonant cavities are uniformly spaced along the circumference of the first housing (11); alternatively, a plurality of the second natural frequency resonant cavities are arranged at regular intervals in the circumferential direction of the first housing (11).
9. An indoor unit of an air conditioner, comprising a duct shell, wherein the duct shell is as claimed in any one of claims 1 to 8.
10. An air conditioner comprising an air conditioner indoor unit, wherein the air conditioner indoor unit is the air conditioner indoor unit according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921917930.8U CN211011856U (en) | 2019-11-08 | 2019-11-08 | Air duct shell, air conditioner indoor unit and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921917930.8U CN211011856U (en) | 2019-11-08 | 2019-11-08 | Air duct shell, air conditioner indoor unit and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211011856U true CN211011856U (en) | 2020-07-14 |
Family
ID=71477122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921917930.8U Withdrawn - After Issue CN211011856U (en) | 2019-11-08 | 2019-11-08 | Air duct shell, air conditioner indoor unit and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211011856U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805999A (en) * | 2019-11-08 | 2020-02-18 | 珠海格力电器股份有限公司 | Air duct shell, air conditioner indoor unit and air conditioner |
-
2019
- 2019-11-08 CN CN201921917930.8U patent/CN211011856U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805999A (en) * | 2019-11-08 | 2020-02-18 | 珠海格力电器股份有限公司 | Air duct shell, air conditioner indoor unit and air conditioner |
| WO2021088469A1 (en) * | 2019-11-08 | 2021-05-14 | 珠海格力电器股份有限公司 | Air duct shell, indoor air-conditioning unit, and air conditioner |
| CN110805999B (en) * | 2019-11-08 | 2024-06-28 | 珠海格力电器股份有限公司 | Air duct shell, air conditioner indoor unit and air conditioner |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200714 Effective date of abandoning: 20240628 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200714 Effective date of abandoning: 20240628 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |