CN108954759B - Air port device and air conditioning unit - Google Patents
Air port device and air conditioning unit Download PDFInfo
- Publication number
- CN108954759B CN108954759B CN201810969439.3A CN201810969439A CN108954759B CN 108954759 B CN108954759 B CN 108954759B CN 201810969439 A CN201810969439 A CN 201810969439A CN 108954759 B CN108954759 B CN 108954759B
- Authority
- CN
- China
- Prior art keywords
- air
- silencing
- air outlet
- cover
- noise
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 20
- 230000030279 gene silencing Effects 0.000 claims abstract description 85
- 229920000742 Cotton Polymers 0.000 claims description 10
- 230000009467 reduction Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000003584 silencer Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
Classifications
-
- 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
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
-
- 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
- F24F2013/247—Active noise-suppression
Abstract
The application provides a wind gap device and air conditioning unit. The tuyere device includes a housing and a muffler cover. An air cavity is formed in the shell, and an air inlet and an air outlet which are communicated with the air cavity are formed in the shell. The silencing cover is arranged in the air cavity and is positioned between the air inlet and the air outlet. The silencing cover is provided with silencing holes for circulating air flow from the air inlet to the air outlet and absorbing noise. By adopting the technical scheme of the invention, the silencing cover is arranged in the air cavity of the shell, so that the air flow from the air inlet to the air outlet can pass through the silencing cover. The silencing hole on the silencing cover has the function of circulating air flow, and can absorb noise transmitted from the air inlet to the air outlet. Therefore, motor noise, fan noise, airflow noise and secondary noise generated by airflow flowing in an air supply system of the air conditioning unit are effectively eliminated, the air supply noise of the air conditioning unit is effectively reduced, and people can work and rest in a quiet and healthy environment.
Description
Technical Field
The invention relates to the technical field of air conditioning equipment, in particular to an air port device and an air conditioning unit.
Background
With the development of economy, the installation demand of the central air conditioner is rapidly increased, the requirements of people on environmental noise are also higher and higher, and the noise reduction technology of the air outlet at the tail end of the air conditioner is urgent.
Most air-conditioning air outlets in the existing installation engineering in the market adopt aluminum alloy linear air outlets. The air outlet made of aluminum alloy has no silencing and rectifying effects, and the air outlet noise of the air conditioner cannot be controlled, so that the user experience is poor.
Disclosure of Invention
The embodiment of the invention provides an air port device and an air conditioning unit, which are used for solving the technical problem of overlarge using noise of the air conditioning unit in the prior art.
The embodiment of the application provides a tuyere device, which comprises: the shell is internally provided with an air cavity, and an air inlet and an air outlet which are communicated with the air cavity are formed in the shell; the silencing cover is arranged in the air cavity and located between the air inlet and the air outlet, and is provided with silencing holes for circulating air flow from the air inlet to the air outlet and absorbing noise.
In one embodiment, the inner wall of the wind cavity is provided with noise damping cotton.
In one embodiment, the sound attenuating cap is disposed over the air outlet.
In one embodiment, the noise reduction cover comprises a side wall and a top wall which are connected, the top wall is connected to the top of the side wall, the side wall is arranged at intervals with the inner wall of the wind cavity, the noise reduction holes are formed in the side wall, and the top wall is used for dispersing air flow entering from the air inlet to the side wall.
In one embodiment, the silencing cover further comprises a bottom wall connected to the bottom of the side wall, the bottom wall is arranged on the air outlet, and the silencing hole is further formed in the bottom wall.
In one embodiment, the muffler cover further includes a muffler plate coupled between the sidewalls.
In one embodiment, the plurality of the silencing plates are arranged in a crossing way.
In one embodiment, the number of the silencing plates is two, and the two silencing plates are vertically crossed.
In one embodiment, a wind guiding cone is arranged on the top wall, the wind guiding cone is opposite to the air inlet, and the wind guiding cone is used for guiding the air flow entering from the air inlet to the side wall uniformly.
In one embodiment, the top wall is further provided with a plurality of diversion refraction plates, the diversion refraction plates are arranged around the wind guide cone at intervals by taking the wind guide cone as a center, an air duct is formed between the adjacent diversion refraction plates, the first end of the air duct faces the wind guide cone, and the second end of the air duct faces the side wall.
In one embodiment, the diversion refraction plates are air deflectors arranged in a zigzag manner, and a zigzag extending air channel is formed between every two adjacent diversion refraction plates.
In one embodiment, the diameter of the area of the deflector refraction plate is larger than the diameter of the cross section of the air inlet.
In one embodiment, the shell is a first cylinder, the air inlet and the air outlet are both arranged along the central line of the shell, the silencing cover is a second cylinder, the air guide cone is arranged at the center of the top wall, and the air guide refraction plate is arranged along the radius of the top wall.
In one embodiment, the tuyere device further comprises an air outlet panel, which is arranged on the air outlet.
In one embodiment, the plurality of silencing holes are uniformly distributed on the silencing cover.
The application also provides an air conditioning unit, which comprises a tuyere device, wherein the tuyere device is the tuyere device.
In the above embodiment, by providing the silencing cover in the air chamber of the housing, the air flow from the air inlet to the air outlet can be made to pass through the silencing cover. The silencing hole on the silencing cover has the function of circulating air flow, and can absorb noise transmitted from the air inlet to the air outlet. Therefore, motor noise, fan noise, airflow noise and secondary noise generated by airflow flowing in an air supply system of the air conditioning unit are effectively eliminated, the air supply noise of the air conditioning unit is effectively reduced, and people can work and rest in a quiet and healthy environment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic view showing the overall structure of an embodiment of a tuyere device according to the present invention;
FIG. 2 is a schematic cross-sectional structure of the tuyere device of FIG. 1;
FIG. 3 is a schematic view showing the overall structure of a muffler cover of the tuyere device of FIG. 1;
fig. 4 is a schematic exploded view of a muffler cover of the tuyere device of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. The exemplary embodiments of the present invention and the descriptions thereof are used herein to explain the present invention, but are not intended to limit the invention.
Fig. 1 and 2 show a tuyere device of the present invention, which includes a housing 10 and a silencing cover 20. An air cavity is formed in the shell 10, and an air inlet 11 and an air outlet 12 which are communicated with the air cavity are arranged on the shell 10. The silencing cover 20 is arranged in the air cavity and is located between the air inlet 11 and the air outlet 12. The silencing cover 20 is provided with a silencing hole 21, and the silencing hole 21 is used for circulating air flow from the air inlet 11 to the air outlet 12 and absorbing noise.
By applying the technical scheme of the invention, the silencing cover 20 is arranged in the air cavity of the shell 10, so that the air flow from the air inlet 11 to the air outlet 12 can pass through the silencing cover 20. The silencing hole 21 on the silencing cover 20 has the function of circulating air flow and can absorb noise transmitted from the air inlet 11 to the air outlet 12. Therefore, motor noise, fan noise, airflow noise and secondary noise generated by airflow flowing in an air supply system of the air conditioning unit are effectively eliminated, the air supply noise of the air conditioning unit is effectively reduced, and people can work and rest in a quiet and healthy environment.
As a preferred embodiment, the number of the sound deadening holes 21 is plural, and the plurality of sound deadening holes 21 are uniformly distributed on the sound deadening cap 20.
As shown in fig. 2, as a preferred embodiment, a noise damping cotton 13 is provided on the inner wall of the wind chamber. When in use, the noise-reducing cotton 13 can absorb air flow noise, and has the effect of preventing the noise from being transmitted out through the shell 10. In the technical scheme of the present invention, the material of the noise reduction cotton 13 is not particularly limited, and may have the effects of sound absorption and noise reduction.
As shown in fig. 2, in the embodiment of the present invention, a muffler cover 20 is provided on the air outlet 12. Since the noise is finally discharged from the air outlet 12 into the room, the noise can be more effectively eliminated by disposing the noise-reducing cover 20 on the air outlet 12. As an alternative, the muffler cover 20 may be provided on the air intake 11.
As shown in fig. 3, in the technical solution of this embodiment, the muffler cover 20 includes a side wall and a top wall that are connected, the top wall is connected to the top of the side wall, and the side wall is disposed at an interval from the inner wall of the wind chamber. Sound deadening holes 21 are provided on the side walls, and the top wall serves to disperse the flow of air entering from the air intake 11 to the side walls. After entering the air chamber, the air flow is dispersed by the top wall between the side wall and the inner wall of the air chamber, and finally is sent to the air outlet 12 through the silencing hole 21. In this process, noise is absorbed by the noise damping cotton 13 in the wind chamber, and is absorbed through the noise damping hole 21.
As shown in fig. 3 and 4, the muffler cover 20 further includes a bottom wall connected to the bottom of the side wall, the bottom wall being provided on the air outlet 12, and the muffler hole 21 being further provided on the bottom wall. The bottom wall is also provided with a sound deadening hole 21, which can strengthen the noise absorption effect of the sound deadening cover 20. In the technical solution of the present embodiment, the bottom wall of the silencing cover 20 forms the bottom of the casing 10, that is, the bottom wall of the silencing cover 20 is formed with the air outlet 12, and the silencing hole 21 on the bottom wall is communicated with the air outlet 12.
Preferably, the plurality of sound deadening holes 21 are uniformly distributed on the side wall and the bottom wall of the sound deadening cap 20.
As another alternative embodiment, the housing 10 may also include a top and a bottom, the air inlet 11 is disposed on the top, the air outlet 12 is disposed on the bottom, and the noise reduction cover 20 is disposed on the bottom of the housing 10 and corresponds to the air outlet 12 on the bottom.
As shown in FIG. 4, as a preferred embodiment, the muffler cover 20 further includes a muffler plate 22, the muffler plate 22 being connected between the side walls. Noise entering from the sound deadening holes 21 of the side walls is further absorbed by the sound deadening plate 22. In the technical solution of this embodiment, two silencing plates 22 are provided, and the two silencing plates 22 are perpendicularly crossed. Thus, the space in the silencing cover 20 is divided into four parts to form four relatively independent small cavities, and the more the silencing amount is required, the more the silencing plates 22 can be arranged to divide the relatively independent small cavities. As another alternative embodiment, the muffler plate may be one, and the space in the muffler cover 20 may be divided into two. In addition, more silencer plates 22 can be provided, and a plurality of silencer plates 22 are arranged in a crossing manner.
As shown in fig. 3, in the technical solution of this embodiment, a wind guiding cone 23 is disposed on the top wall, the wind guiding cone 23 is disposed opposite to the air inlet 11, and the wind guiding cone 23 is used for guiding the air flow entering from the air inlet 11 to the side wall uniformly. Preferably, the wind guide cone 23 is a thin cone structure, and has the main functions of wind guide, reducing resistance to air flow entering and effectively guiding the air flow uniformly to the side wall of the silencing cover 20, so that the air flow passes through the side wall of the silencing cover 20. The wind guide cone 23 of the present invention mainly plays a role in guiding the airflow, and is not limited to a specific form.
As shown in fig. 3 and 4, the top wall is further provided with a plurality of guide refraction plates 24, and the plurality of guide refraction plates 24 are spaced around the wind cone 23 with the wind cone 23 as the center. An air duct 25 is formed between the adjacent diversion refraction plates 24, a first end of the air duct 25 faces the air guide cone 23, and a second end of the air duct 25 faces the side wall. During the guiding of the air guide cone 23 to the side wall of the silencer cover 20, the air flow is led to the side wall of the silencer cover 20 through the air duct 25, and at the same time, the noise is led to the side wall of the silencer cover 20 through the air duct 25. In this process, the guiding refraction plate 24 can make noise propagate in the air duct 25, and reflect and scatter to generate mutual interference to cancel out part of noise.
As a preferred embodiment, the diversion refraction plates 24 are air deflectors arranged in a zigzag manner, and a zigzag extending air duct 25 is formed between adjacent diversion refraction plates 24. The zigzag air duct 25 formed by the zigzag air deflector can better make noise reflected and scattered to interfere with each other for counteracting.
As a preferred embodiment, the diameter of the area where the diversion refraction plate 24 is located is larger than the diameter of the cross section of the air inlet 11, so that noise generated by vertical impact of air flow can be avoided.
After entering the air inlet 11, the air-conditioned air is guided to the air duct 25 between the diversion refraction plates 24 through the air guide cone 23, and at this time, the air flow is divided into at least 10 parts by the diversion refraction plates 24. The area of the area where the diversion refraction plate 24 is located is larger than the area of the cross section of the air inlet 11, and at the moment, the airflow passes through the air duct 25 to flow poison towards the side wall of the silencing cover 20, and in the process, the wind speed continuously attenuates and flows between the side wall of the silencing cover 20 and the inner wall of the air cavity. At this time, part of the sound is absorbed by the silencing cotton 13 attached to the inner wall of the air chamber, and part of the sound is reflected and scattered by the guide refraction plate 24 in each air duct 25 to generate mutual interference to cancel out, so that part of the sound is eliminated. At this time, the air flow reaches the side wall of the noise-reducing cover 20, and in the process, the noise-reducing cotton 13 is reduced by the sound absorption resistance, and the diversion refraction plate 24 is reduced by the interference and expansion resistance. The air flow in the air cavity is rectified by the air duct 25 between the diversion refraction plates 24 to become stable and soft air flow. At this time, the air flow passes through the silencing holes 21 on the side wall of the silencing cover 20 in a penetrating form, is further silenced by the sound absorption structure of the silencing holes 21, and then is transmitted into the silencing cover 20, and the silencing plate 22 in the silencing cover 20 further absorbs noise. At this time, each small cavity in the silencing cover 20 is independently silenced, and the more the silencing amount is required, more silencing plates 22 can be arranged to divide more relatively independent small cavities. Finally, the air flow is guided into the room after being silenced by the silencing hole 21 of the bottom wall of the silencing cover 20.
As a preferred embodiment, in the technical solution of this embodiment, the guiding refraction plate 24 is Z-shaped. In addition, the device can be designed into other forms, and the device can have the effect of refracting and scattering noise.
As shown in fig. 2 and 3, in the technical solution of the present embodiment, the casing 10 is of a first cylindrical shape, the air inlet 11 and the air outlet 12 are both disposed along the center line of the casing 10, and the muffler cover 20 is of a second cylindrical shape. The wind cone 23 is arranged in the center of the top wall and the wind deflector refraction plate 24 is arranged along the radius of the top wall. The shell 10 is of a first cylinder shape, and the silencing cover 20 is of a second cylinder shape, so that air flow can be well circulated, and noise is avoided. Meanwhile, the wind guide cone 23 is arranged at the center of the top wall, so that the air flow can be well and uniformly distributed. The guide refraction plate 24 is arranged along the radius of the top wall, so that noise can be uniformly and effectively eliminated.
Optionally, a connection flange structure is formed on the air inlet 11 for connection with an air outlet of the air conditioning apparatus. More preferably, as shown in fig. 2, the air outlet device further includes an air outlet panel 30, and the air outlet panel 30 is disposed on the air outlet 12. Preferably, the air outlet panel 30 is provided with air guiding blades, and the air outlet angle can be adjusted.
By adopting the technical scheme of the invention, the air flow entering the shell 10 is rectified, scattered and reflected to interfere with each other, in the process, the first-stage silencing is carried out in the air cavity through the silencing cotton 13 and the diversion refraction plate 24, the air flow after the first-stage silencing becomes stable and soft, and then the air flow enters the silencing cover 20 to carry out the second silencing and then is conveyed into a room. The whole air flow changes direction in the shell 10 for a plurality of times, so that the sound is continuously counteracted and absorbed, and the purpose of silencing and silencing is achieved.
The invention also provides an air conditioning unit which comprises the air port device. The air port device is arranged on an air outlet of the air conditioning unit, so that the purposes of air supply, noise reduction and rectification are achieved. In the use process, the airflow entering the air inlet 11 is rectified and circumferentially and parallelly diffused, the flow speed of the airflow is reduced, the flow guiding refraction plate 24 makes the interference of sound eliminated due to sound scattering and refraction, and noise is refracted, interfered and silenced along with the airflow. In the process, the noise of the central air conditioner is reduced to the maximum extent by designing the noise reduction cotton 13 to further absorb the noise.
It should be noted that the technical scheme of the air conditioning unit is particularly suitable for a central air conditioner.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations can be made to the embodiments of the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A tuyere device, characterized by comprising:
the device comprises a shell (10), wherein an air cavity is formed in the shell (10), and an air inlet (11) and an air outlet (12) which are communicated with the air cavity are formed in the shell (10);
the silencing cover (20) is arranged in the air cavity and positioned between the air inlet (11) and the air outlet (12), a silencing hole (21) is formed in the silencing cover (20), and the silencing hole (21) is used for circulating air flow from the air inlet (11) to the air outlet (12) and absorbing noise;
the silencing cover (20) is arranged on the air outlet (12);
the silencing cover (20) comprises a side wall and a top wall which are connected, the top wall is connected to the top of the side wall, the side wall and the inner wall of the wind cavity are arranged at intervals, the silencing holes (21) are formed in the side wall, and the top wall is used for dispersing air flow entering from the air inlet (11) to the side wall;
the silencing cover (20) further comprises a bottom wall, the bottom wall is connected to the bottom of the side wall, the bottom wall is arranged on the air outlet (12), and the silencing hole (21) is further formed in the bottom wall;
the number of the silencing holes (21) is multiple, and the silencing holes (21) are uniformly distributed on the silencing cover (20).
2. Tuyere device according to claim 1, characterized in that the inner wall of the wind chamber is provided with silencing cotton (13).
3. Tuyere device according to claim 1, characterized in that the silencing cover (20) further comprises a silencing plate (22), the silencing plate (22) being connected between the side walls.
4. A tuyere device according to claim 3, wherein the silencing plates (22) are provided in a plurality, and the silencing plates (22) are disposed in a crossing manner.
5. Tuyere device according to claim 4, characterized in that the number of the silencing plates (22) is two, and the two silencing plates (22) are arranged perpendicularly crosswise.
6. Tuyere device according to claim 1, characterized in that an air guiding cone (23) is provided on the top wall, which air guiding cone (23) is arranged opposite to the air inlet (11), which air guiding cone (23) is used for guiding the air flow entering from the air inlet (11) to the side wall uniformly.
7. The tuyere device according to claim 6, wherein a plurality of diversion refraction plates (24) are further arranged on the top wall, the diversion refraction plates (24) are arranged around the wind guide cone (23) at intervals by taking the wind guide cone (23) as a center, an air channel (25) is formed between adjacent diversion refraction plates (24), a first end of the air channel (25) faces the wind guide cone (23), and a second end of the air channel (25) faces the side wall.
8. Tuyere device according to claim 7, characterized in that the deflector refraction plates (24) are meandering deflector plates, between which adjacent deflector refraction plates (24) the air channels (25) are formed which extend meandering.
9. Tuyere device according to claim 7, characterized in that the diameter of the region of the deflector refraction plate (24) is greater than the diameter of the cross section of the air inlet (11).
10. The tuyere device according to claim 7, characterized in that the housing (10) is a first cylindrical shape, the air inlet (11) and the air outlet (12) are both arranged along a center line of the housing (10), the silencing cover (20) is a second cylindrical shape, the air guiding cone (23) is arranged at a center of the top wall, and the guiding refraction plate (24) is arranged along a radius of the top wall.
11. The tuyere device according to claim 1, characterized in that the tuyere device further comprises an air outlet panel (30), the air outlet panel (30) being arranged on the air outlet (12).
12. An air conditioning unit comprising a tuyere device, characterized in that the tuyere device is as claimed in any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810969439.3A CN108954759B (en) | 2018-08-23 | 2018-08-23 | Air port device and air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810969439.3A CN108954759B (en) | 2018-08-23 | 2018-08-23 | Air port device and air conditioning unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108954759A CN108954759A (en) | 2018-12-07 |
| CN108954759B true CN108954759B (en) | 2024-03-19 |
Family
ID=64473947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810969439.3A Active CN108954759B (en) | 2018-08-23 | 2018-08-23 | Air port device and air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108954759B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425707B (en) * | 2019-08-01 | 2023-08-04 | 苍龙集团有限公司 | Multifunctional environment control system for operating room |
| CN112436652A (en) * | 2020-10-27 | 2021-03-02 | 安徽达来电机有限公司 | Ventilation type permanent magnet motor |
| CN113153825A (en) * | 2021-02-07 | 2021-07-23 | 李卫东 | A silencing device and fan for fan |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10103728A (en) * | 1996-09-26 | 1998-04-21 | Matsushita Seiko Co Ltd | Silencer |
| CN204736866U (en) * | 2015-06-05 | 2015-11-04 | 南车青岛四方机车车辆股份有限公司 | Amortization wind channel and rail vehicle |
| CN106679135A (en) * | 2015-11-10 | 2017-05-17 | 重庆成吉消防安全技术有限公司 | Efficient noise elimination static pressure tank |
| CN208920503U (en) * | 2018-08-23 | 2019-05-31 | 珠海格力电器股份有限公司 | Tuyere device and air-conditioner set |
| KR20200073393A (en) * | 2018-12-14 | 2020-06-24 | (주)정원엔지니어링 | Noise reduction device of ventilator in multi-story building |
-
2018
- 2018-08-23 CN CN201810969439.3A patent/CN108954759B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10103728A (en) * | 1996-09-26 | 1998-04-21 | Matsushita Seiko Co Ltd | Silencer |
| CN204736866U (en) * | 2015-06-05 | 2015-11-04 | 南车青岛四方机车车辆股份有限公司 | Amortization wind channel and rail vehicle |
| CN106679135A (en) * | 2015-11-10 | 2017-05-17 | 重庆成吉消防安全技术有限公司 | Efficient noise elimination static pressure tank |
| CN208920503U (en) * | 2018-08-23 | 2019-05-31 | 珠海格力电器股份有限公司 | Tuyere device and air-conditioner set |
| KR20200073393A (en) * | 2018-12-14 | 2020-06-24 | (주)정원엔지니어링 | Noise reduction device of ventilator in multi-story building |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108954759A (en) | 2018-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108954759B (en) | Air port device and air conditioning unit | |
| US10775074B2 (en) | Sound attenuating air handler panel apparatus and method | |
| US5297517A (en) | Noise suppression enclosure for an engine | |
| US5663536A (en) | Sound attenuation assembly for air-cooling apparatus | |
| CN208920503U (en) | Tuyere device and air-conditioner set | |
| US3378100A (en) | Sound attenuator | |
| US2724320A (en) | Distributing system | |
| WO1993004272A1 (en) | Noise suppression enclosure for an engine | |
| EP2198205B1 (en) | Sound attenuator for a fan coil | |
| CN213454186U (en) | Wall-through silencer | |
| CN215062804U (en) | Noise reduction device for commercial roof | |
| CN209822273U (en) | Sound wave reflection sound absorption and noise reduction device | |
| CA2150222C (en) | Silencer | |
| US7806229B2 (en) | Fan powered silencing terminal unit | |
| CN212538244U (en) | Volute-simulated noise elimination and ventilation device | |
| CN210187230U (en) | Rice mill sound attenuation structure and rice mill thereof | |
| CN110822547A (en) | Variable air volume end device with noise reduction function and air conditioning system | |
| CN216592214U (en) | Silencing structure and air conditioner with same | |
| CN211573880U (en) | Silencer of blower | |
| CN107314472B (en) | Partition board assembly, air conditioner outdoor unit and air conditioner | |
| JP2016057010A (en) | Blowout device and suction device for air conditioning facility | |
| CN219413050U (en) | Noise reduction mechanism and waste discharge device | |
| CN217783714U (en) | Compressor unit silencing structure that empties | |
| CN213751946U (en) | Compressed air discharging silencer | |
| CN210980236U (en) | Data center diesel generator air supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |