CN210320585U - Silencer and air conditioner - Google Patents
Silencer and air conditioner Download PDFInfo
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- CN210320585U CN210320585U CN201921148773.9U CN201921148773U CN210320585U CN 210320585 U CN210320585 U CN 210320585U CN 201921148773 U CN201921148773 U CN 201921148773U CN 210320585 U CN210320585 U CN 210320585U
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- cavity
- expansion
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- sound
- muffler
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- 230000003584 silencer Effects 0.000 title claims description 27
- 230000030279 gene silencing Effects 0.000 claims abstract description 53
- 239000010410 layer Substances 0.000 claims description 32
- 238000005192 partition Methods 0.000 claims description 32
- 239000011241 protective layer Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 6
- 230000001743 silencing effect Effects 0.000 description 6
- 230000000670 limiting effect Effects 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000011491 glass wool Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Exhaust Silencers (AREA)
- Duct Arrangements (AREA)
Abstract
The utility model discloses a muffler and air conditioner, this muffler includes: the first silencing structure comprises an air inlet pipe, an air outlet pipe and a silencing piece, the silencing piece comprises a first expansion cavity and at least two through holes arranged on the side wall of the first expansion cavity, and the air inlet pipe and the air outlet pipe are both communicated with the first expansion cavity; the second silencing structure comprises a second expansion cavity, and the first silencing structure is arranged in the second expansion cavity; and the baffle is arranged between the outer wall of the first silencing structure and the inner wall of the second expansion cavity and divides the second expansion cavity into a first cavity and a second cavity, the first cavity is communicated with the first expansion cavity through at least one through hole, the second cavity is communicated with the first expansion cavity through at least one through hole, and the baffle can move relative to the first silencing structure to enable the volumes of the first cavity and the second cavity to be adjustable. This muffler can realize full frequency channel amortization, and the noise cancelling effect is good.
Description
Technical Field
The utility model relates to a life electrical apparatus technical field especially relates to a muffler and air conditioner.
Background
The silencer is a noise reduction device for an airflow pipeline with noise transmission, such as a pipeline and an elbow with sound absorption linings or a pipeline with suddenly changed sectional area and other discontinuous acoustic impedances, and the like, so that the noise in the pipeline is attenuated or reflected. The former is called resistive muffler and the latter is called resistive muffler, as well as resistive hybrid mufflers.
At present, the silencer amortization frequency channel limitation of traditional application on the air conditioner pipeline causes the air current pulsation to form resonance with the silencer wallboard interact to reduce the noise cancelling effect, seriously influence the user and use experience.
SUMMERY OF THE UTILITY MODEL
On the basis, aiming at the problems that the traditional silencer is limited in silencing frequency band, so that the airflow pulsation and a silencer wall plate interact to form resonance, the silencing effect is reduced, and the use experience of a user is seriously influenced, the silencer and the air conditioner are provided, the silencer can realize full-frequency-band silencing, and the silencing effect is good; the air conditioner comprises the silencer, so that the air conditioner has the advantage of good silencing effect.
The specific technical scheme is as follows:
in one aspect, the present application relates to a muffler comprising: the first silencing structure comprises an air inlet pipe, an air outlet pipe and a silencing piece, the silencing piece comprises a first expansion cavity and at least two through holes arranged on the side wall of the first expansion cavity, and the air inlet pipe and the air outlet pipe are both communicated with the first expansion cavity; a second sound attenuating structure including a second expansion chamber, the first sound attenuating structure disposed in the second expansion chamber; and the baffle is arranged between the outer wall of the first silencing structure and the inner wall of the second expansion cavity and divides the second expansion cavity into a first cavity and a second cavity, the first cavity is communicated with the first expansion cavity through at least one through hole, the second cavity is communicated with the first expansion cavity through at least one through hole, and the baffle can move relative to the first silencing structure to enable the volumes of the first cavity and the second cavity to be adjustable.
When the silencer is used, airflow enters the first expansion cavity along the air inlet pipe, then enters the first cavity and the second cavity along the through hole respectively, and enters the air outlet pipe for discharge after being silenced by the first expansion cavity, the through hole and the second expansion cavity; furthermore, the partition board can move relative to the first silencing structure, so that the volumes of the first cavity and the second cavity are adjustable, and the acoustic reactance of the noise in the second expansion cavity can be adjusted, so that the noise of each frequency band is eliminated.
The technical solution is further explained below:
in one embodiment, the first silencing structure is movably disposed in the second expansion cavity, and the partition is fixedly disposed on an outer wall of the first silencing structure, so that the first silencing structure can drive the partition to move to adjust the volumes of the first cavity and the second cavity.
In one embodiment, the second silencing structure comprises a first mounting hole and a second mounting hole, the first mounting hole and the second mounting hole are communicated with the second expansion cavity, the outer diameter of the air inlet pipe and/or the outer diameter of the air outlet pipe are smaller than the outer diameter of the silencing piece, one end of the air inlet pipe is connected to the silencing piece, one end of the air outlet pipe is connected to the silencing piece, the other end of the air inlet pipe is movably arranged in the first mounting hole, the other end of the air outlet pipe is movably arranged in the second mounting hole, and the silencing piece is arranged in the second expansion cavity.
In one embodiment, the muffler further comprises a power output mechanism, the power output mechanism is disposed in the second expansion cavity, and an output end of the power output mechanism is connected with the partition plate to drive the partition plate to move, so that the volumes of the first cavity and the second cavity are adjustable.
In one embodiment, the second silencing structure further comprises a first mounting shell and a second mounting shell, the first mounting shell comprises a third cavity, the second mounting shell comprises a fourth cavity, one end of the first mounting shell extends into the fourth cavity, and the third cavity and the fourth cavity are communicated to form the second expansion cavity.
In one embodiment, the muffler further comprises a first sound-deadening layer and a second sound-deadening layer, wherein the first sound-deadening layer is coated or wrapped on the inner wall of the third cavity, and the second sound-deadening layer is coated or wrapped on the inner wall of the fourth cavity.
In one embodiment, the first sound-deadening layer and the second sound-deadening layer are disposed at an interval to form a moving groove, and one end of the partition plate is disposed in the moving groove.
In one embodiment, the silencer further comprises a first protective layer coated or clad on the outer wall of the first silencing layer; and/or the silencer also comprises a second protective layer, and the second protective layer is coated or wrapped on the outer wall of the second silencing layer.
In one embodiment, the diameter of the through hole is D, wherein D is more than or equal to 0.5mm and less than or equal to 2 mm.
In another aspect, the present application also relates to an air conditioner including the silencer in any of the above embodiments.
When the air conditioner is used, airflow enters the first expansion cavity along the air inlet pipe, then enters the first cavity and the second cavity along the through hole respectively, and enters the air outlet pipe for discharge after being silenced by the first expansion cavity, the through hole and the second expansion cavity; furthermore, the partition board can move relative to the first silencing structure, so that the volumes of the first cavity and the second cavity are adjustable, and the acoustic reactance of the noise in the second expansion cavity can be adjusted, so that the noise of each frequency band is eliminated.
Drawings
FIG. 1 is a schematic view of a muffler;
fig. 2 is a schematic view of a first sound attenuating structure.
Description of reference numerals:
10. the silencer comprises a silencer body, 100, a first silencing structure, 110, an air inlet pipe, 120, an air outlet pipe, 130, a silencing piece, 132, a through hole, 140, a partition board, 200, a second silencing structure, 210, a second expansion cavity, 212, a first cavity, 214, a second cavity, 220, a first mounting shell, 230, a second mounting shell, 310, a first silencing layer, 320, a second silencing layer, 330 and a moving groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
It will be understood that when an element is referred to as being "secured to" another element, it can be integral with the other element or can be removably connected to the other element.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Further, it is to be understood that, in the present embodiment, the positional relationships indicated by the terms "lower", "upper", "front", "rear", "left", "right", "inner", "outer", "top", "bottom", "one side", "the other side", "one end", "the other end", and the like are based on the positional relationships shown in the drawings; the terms "first," "second," and the like are used herein to distinguish one structural element from another. These terms are merely for convenience of description and simplicity of description, and are not to be construed as limiting the present invention.
As shown in fig. 1 and 2, a muffler 10 in one embodiment includes: the first silencing structure 100, the first silencing structure 100 includes the inlet pipe 110, the outlet pipe 120 and the silencing piece 130, the silencing piece 130 includes the first expansion chamber and sets up in the at least two through holes 132 on the sidewall of the first expansion chamber, the air outlet of the inlet pipe 110 and air inlet of the outlet pipe 120 are communicated with first expansion chamber; a second sound-deadening structure 200, the second sound-deadening structure 200 including a second expansion chamber 210, the first sound-deadening structure 100 being disposed in the second expansion chamber 210, the second expansion chamber 210 being communicated with the first expansion chamber through the through-hole 132; and the partition plate 140, the partition plate 140 is disposed between the outer wall of the first sound-deadening structure 100 and the inner wall of the second expansion chamber 210 and divides the second expansion chamber 210 into a first chamber 212 and a second chamber 214, the first chamber 212 is communicated with the first expansion chamber through at least one through hole 132, the second chamber 214 is communicated with the first expansion chamber through at least one through hole 132, and the partition plate 140 can move relative to the first sound-deadening structure 100 to adjust the volumes of the first chamber 212 and the second chamber 214.
When the silencer 10 is used, airflow enters the first expansion cavity along the air inlet pipe 110, then enters the second expansion cavity 210 along the through hole 132, and enters the air outlet pipe 120 for being exhausted after being silenced by the first expansion cavity, the through hole 132 and the second expansion cavity 210; further, since the partition 140 can move relative to the first sound attenuating structure 100, the volumes of the first cavity 212 and the second cavity 214 can be adjusted, so that the acoustic reactance of the noise in the second expansion cavity 210 can be adjusted to eliminate the noise in each frequency band. In this embodiment, the thickness of the partition plate 140 is 3mm to 5mm, and preferably, the thickness of the partition plate 140 is 4 mm.
As shown in fig. 1, in the present embodiment, the number of the through holes 132 is plural, and the through holes are arranged at intervals in the circumferential direction of the silencer 130. The through holes 132 may be arranged in a triangular manner or in a rectangular manner.
As shown in fig. 1, based on the above embodiment, the first sound-deadening structure 100 is movably disposed in the second expansion cavity 210, and the partition plate 140 is fixedly disposed on the outer wall of the first sound-deadening structure 100, so that the first sound-deadening structure 100 can drive the partition plate 140 to move for adjusting the volumes of the first cavity 212 and the second cavity 214. Thus, the first silencing structure 100 is driven to move to drive the partition plate 140 to move, so that the volumes of the first cavity 212 and the second cavity 214 can be adjusted, and the acoustic reactance of the noise in the second expansion cavity 210 can be adjusted. Specifically, a corresponding driving mechanism may be provided, such as a linear motor or a linear module to drive the first sound-deadening structure 100 to move, or to manually push the first sound-deadening structure 100 to move. Further, the rigidity of first sound deadening structure 100 can be enhanced by partition 140, and the radiated regenerative noise of first sound deadening structure 100 can be reduced.
As shown in fig. 1, specifically, in this embodiment, the second silencing structure 200 includes a first mounting hole and a second mounting hole, the first mounting hole and the second mounting hole are both communicated with the second expansion cavity 210, the outer diameter of the inlet pipe 110 and/or the outer diameter of the outlet pipe 120 are smaller than the outer diameter of the silencing part 130, one end of the inlet pipe 110 is connected to the silencing part 130, one end of the outlet pipe 120 is connected to the silencing part 130, the other end of the inlet pipe 110 is movably disposed in the first mounting hole, the other end of the outlet pipe 120 is movably disposed in the second mounting hole, and the silencing part 130 is disposed in the second expansion cavity 210. Because the outer diameter of the inlet pipe 110 and/or the outer diameter of the outlet pipe 120 are smaller than the outer diameter of the silencer 130, the silencer 130 has a limiting function to limit the moving distance of the first silencing structure 100, and thus the silencer 10 can eliminate noises in a specific frequency rangeAnd (4) sound. Specifically, the distance between the sound-absorbing member 130 and the first mounting hole is L1The length of the second sound-deadening structure 200 is L, wherein L is11/5L-1/3L. Specifically, the diameter of the intake pipe 110 is D1Wherein D is115 mm-30 mm, and the diameter of the exhaust pipe is D2Wherein D is2Preferably, D is 15mm to 30mm1＝D220 mm. In particular, the first expansion chamber has a diameter D3Wherein D is3/D12-5, preferably, D3/D13; specifically, the thickness of the silencer 130 is t, where t is 2mm to 3mm, and preferably t is 3 mm.
Of course, in other embodiments, the muffler 10 further includes a power output mechanism, the power output mechanism is disposed in the second expansion chamber 210, and an output end of the power output mechanism is connected to the partition 140 for driving the partition 140 to move, so that the volumes of the first chamber 212 and the second chamber 214 are adjustable. In this way, a power output mechanism can be arranged in the second expansion cavity 210 to drive the partition plate 140 to move, so that the partition plate 140 is automatically driven to move; specifically, the power output mechanism may be a linear motor or a linear module.
As shown in fig. 1, on the basis of any of the above embodiments, the second sound-deadening structure 200 further includes a first installation housing 220 and a second installation housing 230, the first installation housing 220 includes a third cavity, the second installation housing 230 includes a fourth cavity, one end of the first installation housing 220 extends into the fourth cavity, and the third cavity and the fourth cavity are communicated to form a second expansion cavity 210. Thus, the first mounting shell 220 and the second mounting shell 230 are matched to form the second expansion cavity 210, so that the volume of the second expansion cavity 210 can be adjusted, and further, noise of more frequency bands is eliminated; further, on the basis of the present embodiment, the first installation housing 220 is movably disposed in the fourth cavity for adjusting the volume of the second expansion cavity 210; of course, in another embodiment, a plurality of first connection portions are disposed in the fourth chamber, and the outer wall of the first mounting housing 220 is provided with a second connection portion connected to the first connection portion, wherein the second connection portion can be selectively connected to the first connection portion for adjusting the volume of the second expansion chamber 210.
As shown in fig. 1, specifically in this embodiment, the muffler 10 further includes a first sound-deadening layer 310 and a second sound-deadening layer 320, the first sound-deadening layer 310 is coated or wrapped on the inner wall of the third cavity, and the second sound-deadening layer 320 is coated or wrapped on the inner wall of the fourth cavity. Thus, the silencing effect of the silencer 10 is improved by the silencing effect of the first silencing layer 310 and the second silencing layer 320; specifically, the first and second sound- deadening layers 310 and 320 may be a fibrous sound-absorbing material, glass wool, or the like; preferably, the first sound-deadening layer 310 and the second sound-deadening layer 320 have a bulk density of 20kg/m3The superfine glass wool.
As shown in fig. 1, the first sound-deadening layer 310 and the second sound-deadening layer 320 are disposed at an interval to form a moving groove, and one end of the partition 140 is disposed in the moving groove 330. In this way, the moving distance of the partition plate 140 is limited by the moving groove 330, and thus noise in a specific frequency band range can be eliminated.
In the embodiment, the muffler 10 further includes a first protective layer coated or wrapped on the outer wall of the first sound-deadening layer 310. Thus, the first sound-deadening layer 310 is protected by the first protective layer, and the first sound-deadening layer 310 is prevented from being damaged; in particular, the first protective layer may be a protective mesh.
In the embodiment, the silencer 10 further includes a second protective layer coated or wrapped on the outer wall of the second silencing layer 320. Thus, the second muffling layer 320 is protected by the second protective layer, so that the second muffling layer 320 is prevented from being damaged; in particular, the second protective layer may be a protective mesh.
In any of the above embodiments, the diameter of the through hole 132 is D, wherein D is 0.5mm ≦ D ≦ 2 mm. When the aperture of the through hole 132 is within the range, the noise reduction effect is better; specifically, D may be 0.5mm, 0.8mm, 1mm, 1.5mm, and 2 mm. Specifically, the perforation rate of the silencing piece 130 is 1% -5%, and when the perforation rate is in the range, the silencing effect is good; preferably, the sound-deadening member 130 has a perforation rate of 3.5%, wherein the perforation rate refers to a ratio occupied by the through-holes 132 in the surface of the sound-deadening member 130.
It should be noted that, when the air inlet pipe 110 is filled with refrigerant or other refrigerant harmful to human body, the gap between the air inlet pipe 110 and the first mounting hole and the gap between the air outlet pipe 120 and the second mounting hole need to be sealed by sealing elements; when other refrigerants harmless to human bodies, such as carbon dioxide, are introduced into the air inlet pipe 110, a gap may be formed between the air inlet pipe 110 and the first mounting hole, and a gap may be formed between the air outlet pipe 120 and the second mounting hole. In addition, the gap between the partition plate 140 and the inner wall of the second expansion chamber 210 is small, and preferably, the partition plate 140 is hermetically connected with the inner wall of the second expansion chamber 210.
An air conditioner in one embodiment comprises the silencer 10 in any one of the above embodiments.
When the air conditioner is in use, airflow enters the first expansion cavity along the air inlet pipe 110, then enters the second expansion cavity 210 along the through hole 132, and enters the air outlet pipe 120 for discharging after being silenced by the first expansion cavity, the through hole 132 and the second expansion cavity 210; further, since the partition 140 can move relative to the first sound attenuating structure 100, the volumes of the first cavity 212 and the second cavity 214 can be adjusted, so that the acoustic reactance of the noise in the second expansion cavity 210 can be adjusted to eliminate the noise in each frequency band.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A muffler, comprising:
the first silencing structure comprises an air inlet pipe, an air outlet pipe and a silencing piece, the silencing piece comprises a first expansion cavity and at least two through holes arranged on the side wall of the first expansion cavity, and the air inlet pipe and the air outlet pipe are both communicated with the first expansion cavity;
a second sound attenuating structure including a second expansion chamber, the first sound attenuating structure disposed in the second expansion chamber; and
the baffle, the baffle set up in between the outer wall of first sound-deadening structure and the inner wall in second expansion chamber and with the second expansion chamber is cut apart into first cavity and second cavity, first cavity through at least one the through-hole with first expansion chamber intercommunication, the second cavity through at least one the through-hole with first expansion chamber intercommunication, just the baffle can be relative first sound-deadening structure removes and makes the volume of first cavity with the second cavity is adjustable.
2. The muffler of claim 1, wherein the first silencing structure is movably disposed in the second expansion chamber, and the partition is fixedly disposed on an outer wall of the first silencing structure, such that the first silencing structure can drive the partition to move for adjusting the volume of the first chamber and the second chamber.
3. The muffler of claim 1, wherein the second muffling structure comprises a first mounting hole and a second mounting hole, the first mounting hole and the second mounting hole are both communicated with the second expansion cavity, the outer diameter of the air inlet pipe and/or the outer diameter of the air outlet pipe are smaller than the outer diameter of the muffling member, one end of the air inlet pipe is connected to the muffling member, one end of the air outlet pipe is connected to the muffling member, the other end of the air inlet pipe is movably disposed in the first mounting hole, the other end of the air outlet pipe is movably disposed in the second mounting hole, and the muffling member is disposed in the second expansion cavity.
4. The muffler of claim 1, further comprising a power output mechanism disposed in the second expansion chamber, wherein an output end of the power output mechanism is connected to the partition for driving the partition to move, so that the volumes of the first chamber and the second chamber are adjustable.
5. The muffler of claim 1, wherein the second muffling structure further comprises a first mounting housing and a second mounting housing, the first mounting housing comprising a third cavity and the second mounting housing comprising a fourth cavity, one end of the first mounting housing extending into the fourth cavity, the third cavity and the fourth cavity communicating to form the second expansion cavity.
6. The muffler of claim 5, further comprising a first sound attenuating layer coated or clad on an inner wall of the third cavity and a second sound attenuating layer coated or clad on an inner wall of the fourth cavity.
7. The muffler of claim 6 wherein the first and second muffling layers are spaced apart to form a moving slot, one end of the partition being disposed within the moving slot.
8. The muffler of claim 6, further comprising a first protective layer coated or clad to an outer wall of the first sound-deadening layer; and/or further comprises a second protective layer which is coated or wrapped on the outer wall of the second sound-deadening layer.
9. The silencer of any of claims 1 to 8, wherein the through holes have a diameter D, wherein 0.5mm ≦ D ≦ 2 mm.
10. An air conditioner characterized by comprising the silencer of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921148773.9U CN210320585U (en) | 2019-07-19 | 2019-07-19 | Silencer and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921148773.9U CN210320585U (en) | 2019-07-19 | 2019-07-19 | Silencer and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN210320585U true CN210320585U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921148773.9U Active CN210320585U (en) | 2019-07-19 | 2019-07-19 | Silencer and air conditioner |
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| CN (1) | CN210320585U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220295A (en) * | 2019-07-19 | 2019-09-10 | 珠海格力电器股份有限公司 | Silencer and air conditioner |
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2019
- 2019-07-19 CN CN201921148773.9U patent/CN210320585U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220295A (en) * | 2019-07-19 | 2019-09-10 | 珠海格力电器股份有限公司 | Silencer and air conditioner |
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