CN113357714A - Resonance type muffler and air conditioner - Google Patents
Resonance type muffler and air conditioner Download PDFInfo
- Publication number
- CN113357714A CN113357714A CN202110784943.8A CN202110784943A CN113357714A CN 113357714 A CN113357714 A CN 113357714A CN 202110784943 A CN202110784943 A CN 202110784943A CN 113357714 A CN113357714 A CN 113357714A
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- muffler
- silencer
- cavity
- electromagnetic
- resonant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/08—Compressors specially adapted for separate outdoor units
- F24F1/12—Vibration or noise prevention thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/245—Means for preventing or suppressing noise using resonance
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention provides a resonance type silencer and an air conditioner, and relates to the technical field of silencers. The volume of the Helmholtz resonant cavity of the resonance type silencer is adjusted, so that the effective silencing frequency of the silencer can be adjusted according to abnormal noise to be eliminated, the silencer has wider effective silencing frequency, and the problem that the silencing effect of a single silencer on noise in different frequency bands is not good in the prior art is solved.
Description
Technical Field
The invention relates to the technical field of silencers, in particular to a resonant silencer and an air conditioner.
Background
In the operation process of the air conditioner, due to the pressure pulse generated by the compressor, noise in different frequency ranges can be generated in the pipeline system, and the noise is transmitted to the indoor side, so that the use experience of a user on the product can be influenced, and the problem of complaint after sale is caused. In order to solve the noise problem, at present, a silencer is generally connected in series on a pipeline to shield abnormal noise at certain frequency points, but most of silencers have good silencing effect only in a narrow frequency range, and most of silencers in practical engineering are broadband noise.
Therefore, a new technical scheme is urgently needed to solve the problem that the noise elimination effect of a single silencer on noises in different frequency bands is not good.
Disclosure of Invention
In view of this, the present invention provides a resonance type muffler, which adjusts the volume of the helmholtz resonance cavity of the resonance type muffler, so that the effective muffling frequency of the muffler can be adjusted according to the abnormal noise to be muffled, so that the muffler has a wider effective muffling frequency, and the problem of poor muffling effect of a single muffler on noise in different frequency bands in the prior art is solved.
In order to achieve the above object, the invention adopts the following technical scheme: a resonance type silencer comprises a silencer shell, wherein a plurality of Helmholtz resonance cavities are arranged in the silencer shell, and the volume of the Helmholtz resonance cavities is adjustable.
Further optionally, the volume of a plurality of said helmholtz resonator cavities may be adjusted according to the frequency of the abnormal noise to be cancelled.
Further optionally, the muffler shell is a cavity with a through center, at least one partition plate is disposed in the cavity, the cavity is divided into a plurality of helmholtz resonant cavities by the partition plate, and the partition plate can move left and right relative to the muffler shell.
Further optionally, a center of the baffle falls on a central axis of the muffler shell.
Further optionally, the resonant silencer further comprises an electromagnetic driving device, and the electromagnetic driving device controls the partition plates close to the left end and/or the right end of the cavity to move left and right in the cavity.
Further optionally, the electromagnetic drive device comprises:
the electromagnetic assembly comprises an electromagnetic chuck and an electromagnet, wherein the electromagnetic chuck is arranged in the cavity of the silencer shell and is positioned at the left end and/or the right end of the cavity; the electromagnet is arranged on the partition board close to the left end and/or the right end of the cavity, is positioned on the side surface of the partition board close to the electromagnetic chuck, and is matched with the electromagnetic chuck to work;
the power, set up the outside left end of muffler casing and/or right-hand member are close to electromagnet, for electromagnet provides the electric current, the size of electric current is adjusted according to the frequency of waiting to disappear unusual noise.
Further optionally, the electromagnetic driving device further includes a spring, and the spring is used for connecting the electromagnetic chuck at the left end and/or the right end of the cavity and the electromagnet at the left end and/or the right end of the cavity.
Further optionally, the electromagnetic assemblies arranged at the left end and/or the right end of the silencer shell are respectively provided with two electromagnetic assemblies, and the two electromagnetic assemblies are symmetrically distributed relative to the central axis of the silencer shell and controlled by the same power supply.
Further optionally, the muffler further comprises an inner insert tube connected through the muffler shell and penetrating the partition, the inner insert tube having a plurality of openings arranged circumferentially along the inner insert tube, the muffler shell and the partition forming a plurality of helmholtz resonator cavities.
Further optionally, the inner cannula has a length greater than a length of the muffler shell.
The resonance type silencer provided by the invention has the following beneficial effects by designing the structure:
1. the resonance type silencer is internally provided with a movable partition plate, and the effective silencing frequency of the silencer is adjusted by controlling the position of the partition plate in the silencer;
2. the partition board arranged in the resonance type silencer divides the interior of the silencer into a plurality of cavities, so that the effective silencing frequency range of the silencer is widened;
3. the resonance type silencer is provided with an inner inserting pipe, the inner inserting pipe is provided with openings, and the openings can disperse pressure pulsation of a refrigerant, so that the silencing effect is improved.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely exemplary embodiments of the present disclosure, and other drawings may be derived by those skilled in the art without inventive effort.
FIG. 1 is a schematic diagram of a resonant muffler according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a resonant muffler in an embodiment of the present invention;
FIG. 3 is an exploded view of a resonant muffler structure in accordance with an embodiment of the present invention;
FIG. 4 is a schematic diagram of the operation of a resonant muffler in accordance with an embodiment of the present invention;
in the figure:
1-inner intubation; 2-a left power supply; 3-a muffler shell; 4-right power supply; 5-left electromagnetic chuck; 6-left spring; 7-a left separator; 8-a left electromagnet; 9-opening holes; 10-a right baffle; 11-right electromagnet; 12-right spring; 13-right electromagnetic chuck
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
In order to better understand the technical solution of the present invention, the following examples are given.
Example 1
As shown in fig. 1 to 4, the present embodiment provides a resonance type muffler, which includes a muffler housing 3, wherein a plurality of helmholtz resonator cavities are disposed in the muffler housing 3, and the volume of the plurality of helmholtz resonator cavities is adjustable.
The resonant silencer provided by the embodiment can reduce the noise according to the silencing frequency of the resonant silencer
It can be seen that different volumes of resonance cavities correspond to different frequency bands of effective muffling frequency ranges, and the volume of the helmholtz resonance cavity can be adjusted by the muffler, so that the muffler has a wider effective muffling frequency than a general muffler.
Preferably, the volume of the plurality of helmholtz resonator cavities is adjustable according to the frequency of the abnormal noise to be eliminated. The utility model provides a silencer can adjust the size of the volume of Helmholtz resonant cavity through the frequency of outer unusual noise, plays best noise elimination effect.
Preferably, the muffler shell 3 is a cavity with a through center, at least one partition board is arranged in the cavity, the cavity is divided into a plurality of helmholtz resonant cavities by the partition boards, and the partition boards can move left and right relative to the muffler shell 3. The volume of the Helmholtz resonant cavity is adjusted by adjusting the left and right movement of the partition plate, so that the noise with different frequencies is effectively processed. It is further preferred that the center of the partition falls on the center axis of the muffler case 3.
For the flexibility that improves the baffle and remove, preferred, muffler shell 3 is cylindric, and the baffle that corresponds is circular, and clearance fit between circular baffle and the muffler shell 3, the removal of the circular baffle of being convenient for. I.e. the diameter of the circular partition is smaller than the diameter of the circular cross-section of the silencer. It is further preferred that the gap between the circular partition and the muffler case 3 is 5 mm.
There are various ways to realize the movement of the partition plate relative to the muffler shell 3, and preferably, in this embodiment, the resonance type muffler further includes an electromagnetic driving device, and the electromagnetic driving device controls the partition plate near the left end and/or the right end of the cavity to move in the cavity. With regard to the electromagnetic driving device, it is further preferable in this embodiment that the electromagnetic driving device includes: the electromagnetic assembly comprises an electromagnetic chuck and an electromagnet, the electromagnetic chuck is arranged in the cavity of the silencer shell 3 and is positioned at the left end and/or the right end of the cavity; the electromagnet is arranged on the partition board close to the left end and/or the right end of the cavity, is positioned on the side surface of the partition board close to the electromagnetic chuck, and is matched with the electromagnetic chuck to work; the power setting is at the outside left end of muffler casing 3 and/or right-hand member, is close to electromagnet, for electromagnet provides the electric current, and the size of electric current is adjusted according to the frequency of waiting to disappear abnormal noise. When no current flows, the electromagnetic suction force does not exist, when the current flows, the electromagnetic suction force can be generated, and the electromagnetic suction force and the passing current form a positive correlation relationship and can control the partition plate in the silencer shell 3 to move. Further preferably, the power supply is a small power supply.
In order to improve the stability and the flexibility that the baffle removed, preferred in this implementation, the electromagnetic component that sets up at the left end of muffler casing 3 and/or right-hand member is provided with two respectively, and the relative central axis symmetric distribution of muffler casing 3 of two electromagnetic components just is through the same power control. I.e. the external force is increased so that the flap is more easily moved. In addition to the above solution, in order to improve the stability of the movement of the baffle, in this embodiment, it is preferable that the electromagnetic driving device further includes a spring, and the spring is used for connecting the electromagnetic chuck at the left end and/or the right end of the cavity and the electromagnet at the left end and/or the right end of the cavity. In order to improve the moving stability of the partition board when the partition board is attracted, the mutual attraction force generated between the suction disc and the magnet is stored in the pipe clamp in the form of elastic potential energy, the attraction force disappears, the potential energy is released, and the partition board returns to the original position.
In order to improve the silencing effect of the silencer, in this embodiment, preferably, the silencer further includes an inner tube 1 penetrating through the silencer housing, the inner tube 1 penetrates through the partition, the inner tube 1 is provided with a plurality of openings 9 arranged along the circumference of the inner tube 1, and the inner tube 1, the silencer housing and the partition form a plurality of helmholtz resonance chambers. The openings can break up pressure pulsation of the refrigerant, and accordingly noise elimination effect is improved. Further preferably, the length of the inner cannula 1 is greater than the length of the muffler shell 3.
Example 2
As shown in fig. 1-4, the present embodiment provides a resonance muffler, which comprises a muffler shell, the muffler shell is a through cylindrical cavity, a left partition 7 and a right partition 10 are respectively disposed in the through cylindrical cavity along the axial vertical direction, the muffler further comprises an inner insertion tube 1 axially penetrating through the cylindrical cavity along the cavity, wherein holes adapted to the outer diameter of the inner insertion tube 1 are disposed on the left partition and the right partition, the inner insertion tube 1 penetrates through the left partition and the right partition, and an opening 9 is disposed in the circumferential direction of the inner insertion tube 1; form three helmholtz resonant cavities respectively between the both sides of left baffle 7 and right baffle 10 and left baffle 7 and right baffle 10, and the removal through baffle 10 about the control can make the volume of this three helmholtz resonant cavity adjustable, makes this resonance formula muffler have wideer effective noise elimination frequency, improves noise cancelling effect.
As shown in fig. 2 to 3, in the present embodiment, it is preferable that the resonance muffler is provided with a left electromagnetic driving device and a right electromagnetic driving device, respectively, and the movements of the left partition plate 7 and the right partition plate 10 are controlled, respectively, so as to change the volumes of the three helmholtz resonance chambers of the resonance muffler.
As shown in fig. 4, preferably, the left electromagnetic driving device includes: the silencer comprises a left electromagnetic assembly and a left power supply 2, wherein the left electromagnetic assembly is provided with two left electromagnetic assemblies, the two left electromagnetic assemblies are symmetrically distributed relative to the central axis of a silencer shell 3 and are controlled by the left power supply 2, the left electromagnetic assembly comprises a left electromagnetic chuck 5 and a left electromagnet 8, and the left electromagnetic chuck 5 is arranged in a cavity of the silencer shell 3 and is positioned at the left end of the cavity; the left electromagnet 8 is arranged on the left partition plate 7, is positioned on the side surface of the left partition plate 7 close to the left electromagnetic chuck 5, and is matched with the left electromagnetic chuck 5 to work; the left power supply 2 is arranged at the left end outside the silencer shell 3, is close to the left electromagnetic chuck 5, and supplies current for the left electromagnetic chuck 5, and the current is adjusted according to the frequency of the abnormal noise to be eliminated. When no current flows, the electromagnetic suction force does not exist, when the current flows, the electromagnetic suction force is generated, and the electromagnetic suction force and the flowing current have positive correlation, so that the left partition plate 7 in the silencer shell 3 can be controlled to move. In order to improve the stability of the movement of the baffle, it is further preferable that the electromagnetic driving device further includes two left springs 6, and the two left springs 6 are respectively used for connecting the two left electromagnetic chucks 5 and the corresponding left electromagnets 8. The stability of the movement of the left partition plate 7 when the suction force is applied is improved, the mutual attraction force generated between the sucker and the magnet can be stored in the pipe clamp in the form of elastic potential energy, the attraction force disappears, the potential energy is released, and the partition plate returns to the original position. Further preferably, the left power supply 2 is a small power supply.
As shown in fig. 2, preferably, the right electromagnetic driving device includes: the right electromagnetic assemblies are respectively provided with two right electromagnetic assemblies, the two right electromagnetic assemblies are symmetrically distributed relative to the central axis of the silencer shell 3 and are controlled by the right power supply 4, each right electromagnetic assembly comprises a right electromagnetic chuck 13 and a right electromagnet 11, and the right electromagnetic chuck 13 is arranged in the cavity of the silencer shell 3 and is positioned at the right end of the cavity; the right electromagnet 11 is arranged on the right partition plate 10, is positioned on the side surface of the right partition plate 10 close to the right electromagnetic chuck 13, and is matched with the right electromagnetic chuck 13 to work; the right power 4 is arranged at the right end outside the silencer shell 3, is close to the right electromagnetic chuck 13, and provides current for the right electromagnetic chuck 13, and the current is adjusted according to the frequency of the abnormal noise to be eliminated. When no current flows, the electromagnetic attraction force is not generated, when the current flows, the electromagnetic attraction force is generated, and the magnitude of the electromagnetic attraction force is in positive correlation with the passing current, so that the right partition plate 10 in the silencer shell 3 can be controlled to move. In order to improve the stability of the movement of the baffle, it is further preferable that the electromagnetic driving device further includes two right springs 12, and the two right springs 12 are respectively used for connecting the two right electromagnetic chucks 13 and the corresponding right electromagnets 11. The stability of the right partition plate 10 moving when being attracted is improved, the mutual attraction force generated between the sucker and the magnet can be stored in the pipe clamp in the form of elastic potential energy, the attraction force disappears, the potential energy is released, and the partition plate returns to the original position. Further preferably, the right power source 4 is a small power source.
The embodiment also provides a control method of the resonance silencer, which comprises the following steps:
s1: acquiring abnormal noise data to be eliminated of the outdoor unit, and analyzing to obtain one third octave maximum frequency fa of the noise;
s2: acquiring the current effective silencing frequency fb of the resonant silencer;
s3: the absolute value of the difference between fa and fb is calculated to be within a predetermined threshold, and if the threshold requirement is met, the current through the electromagnet is kept constant without adjusting the position of the left and/or right baffle 10 of the muffler. If the absolute value of the difference does not meet the threshold requirement, the next step is carried out;
s4, judging the fa and fb, if fa > fb, considering the effective silencing frequency of the resonance type silencer to be too low, and needing to improve the effective silencing frequency, controlling the current passing through the electromagnetic chuck to increase, reducing the volume of the resonance cavity of the silencer, and improving the effective silencing frequency; on the contrary, the effective muffling frequency is considered to be too high, the effective muffling frequency needs to be reduced, the current passing through the left and/or right electromagnetic chuck 13 is controlled to be reduced, the resonant cavity volume of the resonant muffler is increased, and the effective muffling frequency is reduced.
Example 3
The present embodiment also provides an air conditioner having the resonance enabling silencer of embodiment 1/embodiment 2.
In summary, the present invention provides a resonance type muffler, which includes a muffler shell, wherein a plurality of helmholtz resonator cavities are disposed in the muffler shell, and the volume of the plurality of helmholtz resonator cavities is adjustable. The volume of the Helmholtz resonant cavity of the resonance type silencer is adjusted, so that the effective silencing frequency of the silencer can be adjusted according to abnormal noise to be eliminated, the silencer has wider effective silencing frequency, and the problem that the silencing effect of a single silencer on noise in different frequency bands is not good in the prior art is solved.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (11)
1. A resonant muffler, which includes a muffler shell, characterized in that: a plurality of Helmholtz resonant cavities are arranged in the silencer shell (3), and at least one of the volumes of the Helmholtz resonant cavities is adjustable.
2. The resonant muffler of claim 1, wherein: the volume of the Helmholtz resonance cavity can be adjusted according to the frequency of the abnormal noise to be eliminated.
3. The resonant muffler of claim 2, wherein: a cavity is formed in the silencer shell (3), at least one partition plate is arranged in the cavity, the cavity is divided into a plurality of Helmholtz resonant cavities by the at least one partition plate, and the at least one partition plate can move left and right relative to the silencer shell (3).
4. The resonant muffler of claim 3, wherein: the center of the partition plate is on the central axis of the silencer shell (3).
5. The resonant muffler of claim 4, wherein: the resonance type silencer further comprises an electromagnetic driving device, and the electromagnetic driving device controls the partition plates close to the left end and/or the right end of the cavity to move left and right in the cavity.
6. The resonant muffler of claim 5, wherein: the electromagnetic drive device includes:
the electromagnetic assembly comprises an electromagnetic chuck and an electromagnet, wherein the electromagnetic chuck is arranged in a cavity of the silencer shell (3) and is positioned at the left end and/or the right end of the cavity; the electromagnet is arranged on the partition board close to the left end and/or the right end of the cavity, is positioned on the side surface of the partition board close to the electromagnetic chuck, and is matched with the electromagnetic chuck to work;
the power, set up in the outside left end and/or the right-hand member of muffler casing (3), be close to electromagnet, for electromagnet provides the electric current, the size of electric current is adjusted according to the frequency of waiting to disappear unusual noise.
7. The resonant muffler of claim 6, wherein: the electromagnetic driving device further comprises a spring, and the spring is used for connecting the electromagnetic chuck positioned at the left end and/or the right end of the cavity and the electromagnet positioned at the left end and/or the right end of the cavity.
8. The resonant muffler of claim 6, wherein: the electromagnetic assemblies are arranged at the left end and/or the right end of the silencer shell (3) and are respectively provided with two electromagnetic assemblies, and the two electromagnetic assemblies are symmetrically distributed relative to the central axis of the silencer shell (3) and are controlled by the same power supply.
9. The resonant muffler of claim 3, wherein: the silencer further comprises an inner inserting tube (1) which is connected in the silencer shell (3) in a penetrating mode, the inner inserting tube (1) penetrates through the partition plate, a plurality of openings (9) which are arranged along the circumferential direction of the inner inserting tube (1) are formed in the inner inserting tube (1), and the silencer shell (3) and the partition plate form a plurality of Helmholtz resonance cavities.
10. The resonant muffler of claim 9, wherein: the length of the inner insert tube (1) is greater than the length of the muffler shell (3).
11. An air conditioner, characterized in that: the air conditioner employs the resonant silencer of any of claims 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110784943.8A CN113357714A (en) | 2021-07-12 | 2021-07-12 | Resonance type muffler and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110784943.8A CN113357714A (en) | 2021-07-12 | 2021-07-12 | Resonance type muffler and air conditioner |
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| Publication Number | Publication Date |
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| CN113357714A true CN113357714A (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110784943.8A Withdrawn CN113357714A (en) | 2021-07-12 | 2021-07-12 | Resonance type muffler and air conditioner |
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| Country | Link |
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| CN (1) | CN113357714A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790506A (en) * | 2021-09-16 | 2021-12-14 | 珠海格力电器股份有限公司 | Method for solving noise of air conditioner outdoor unit |
| CN113838447A (en) * | 2021-09-08 | 2021-12-24 | 青岛海尔空调器有限总公司 | Control method and system of silencer |
| CN116839210A (en) * | 2023-07-03 | 2023-10-03 | 上海申华声学装备有限公司 | Novel intelligent noise reduction muffler |
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| US20020076335A1 (en) * | 1999-02-26 | 2002-06-20 | Empresa Brasileira De Compressores S.A. - Embraco | Suction muffler for a hermetic compressor |
| CN101289952A (en) * | 2008-06-03 | 2008-10-22 | 重庆大学 | Expanding cavity adjustable exhaust silencer |
| CN102434337A (en) * | 2011-09-28 | 2012-05-02 | 奇瑞汽车股份有限公司 | Resonance silencer with dynamically adjusted silencing frequency |
| CN102996203A (en) * | 2012-11-29 | 2013-03-27 | 柳州柳工挖掘机有限公司 | Engine silencer |
| CN106050491A (en) * | 2016-07-04 | 2016-10-26 | 南京航空航天大学 | Broadband multi-cavity resonance-type air intake muffler and working method thereof |
| CN108332406A (en) * | 2018-04-08 | 2018-07-27 | 珠海格力电器股份有限公司 | Silencing means and apply its transducer air conditioning |
| CN110220295A (en) * | 2019-07-19 | 2019-09-10 | 珠海格力电器股份有限公司 | Muffler and air-conditioning |
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2021
- 2021-07-12 CN CN202110784943.8A patent/CN113357714A/en not_active Withdrawn
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| US20020076335A1 (en) * | 1999-02-26 | 2002-06-20 | Empresa Brasileira De Compressores S.A. - Embraco | Suction muffler for a hermetic compressor |
| CN101289952A (en) * | 2008-06-03 | 2008-10-22 | 重庆大学 | Expanding cavity adjustable exhaust silencer |
| CN102434337A (en) * | 2011-09-28 | 2012-05-02 | 奇瑞汽车股份有限公司 | Resonance silencer with dynamically adjusted silencing frequency |
| CN102996203A (en) * | 2012-11-29 | 2013-03-27 | 柳州柳工挖掘机有限公司 | Engine silencer |
| CN106050491A (en) * | 2016-07-04 | 2016-10-26 | 南京航空航天大学 | Broadband multi-cavity resonance-type air intake muffler and working method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113838447A (en) * | 2021-09-08 | 2021-12-24 | 青岛海尔空调器有限总公司 | Control method and system of silencer |
| CN113790506A (en) * | 2021-09-16 | 2021-12-14 | 珠海格力电器股份有限公司 | Method for solving noise of air conditioner outdoor unit |
| CN116839210A (en) * | 2023-07-03 | 2023-10-03 | 上海申华声学装备有限公司 | Novel intelligent noise reduction muffler |
| CN116839210B (en) * | 2023-07-03 | 2023-12-19 | 上海申华声学装备有限公司 | Novel intelligent noise reduction muffler |
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Application publication date: 20210907 |