CN113815834A - Marine air conditioner air distributor with helical blades - Google Patents
Marine air conditioner air distributor with helical blades Download PDFInfo
- Publication number
- CN113815834A CN113815834A CN202111169404.XA CN202111169404A CN113815834A CN 113815834 A CN113815834 A CN 113815834A CN 202111169404 A CN202111169404 A CN 202111169404A CN 113815834 A CN113815834 A CN 113815834A
- Authority
- CN
- China
- Prior art keywords
- air
- helical blades
- marine
- air inlet
- box body
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
- B63J2/02—Ventilation; Air-conditioning
- B63J2/10—Ventilating-shafts; Air-scoops
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Duct Arrangements (AREA)
Abstract
The invention discloses a marine air conditioner air distributor with helical blades, which comprises: the static pressure box body is provided with an air inlet and an air outlet respectively, the air inlet is communicated with the air inlet pipe, and the air outlet is connected with the valve plate; the air flow in the static pressure box enters the spiral flow channel through the funnel-shaped air inlet net; the flow guide cylinder is arranged at the air outlet, and the flow guide cylinder and the helical blades form a helical flow passage; the spiral blade is wound on the blade supporting rod and is of a sound absorption structure, so that the noise in the ventilation system can be reduced; the inner wall of the static pressure box body and the outer wall of the flow guide cylinder are coated with sound absorption materials. The invention has better noise reduction effect. Meanwhile, the invention avoids the air conditioner energy consumption increased by the increased pressure loss, lightens the vortex effect caused by the great change of the flow direction and reduces the pneumatic noise.
Description
Technical Field
The invention relates to the technical field of air conditioner air distributors, in particular to a marine air conditioner air distributor with helical blades.
Background
With the development of ship design concepts and building technologies, shipowners put higher demands on the comfort of ships, and noise is one of important indexes for measuring the comfort. The superstructure of the ship is far away from the mechanical equipment, and the air conditioning system contributes more to cabin noise. If the noise of the air conditioning system is not ideal, the comfort of the cabin is greatly influenced.
The noise of the air conditioning system mainly comes from two parts, namely mechanical noise generated by moving parts when the air conditioner works and pneumatic noise generated by air flowing through the air conditioner and pipelines. The noise of the air conditioning system is broadband noise, and the noise level is kept high in each frequency band. To reduce the noise of the air conditioning system, not only the air conditioner and the air supply pipeline need to be optimally designed, but also the air distributor at the terminal of the air conditioning system needs to be ensured to have a better noise reduction effect. The air distributor is an important component of a ship air conditioning system, and has the functions of blowing air supplied by an air conditioner to a cabin at a high wind speed, fully mixing the supplied air with indoor air, ensuring the indoor temperature and the wind speed to be uniformly distributed, generally having the functions of indoor climate regulation and noise reduction, but having the defects of poor noise reduction effect, complex structure and the like of the existing air distributor.
Disclosure of Invention
Therefore, in order to solve the above technical problems, it is necessary to provide a marine air conditioner air distributor with helical blades, which has a simple structure and a good noise reduction effect.
A marine air conditioner air distributor with helical blades comprises:
the static pressure box body is provided with an air inlet and an air outlet respectively, the air inlet is communicated with an air inlet pipe, the air outlet is connected with a flow dispersing disc, and the section of the air inlet pipe is smaller than that of an inner cavity of the static pressure box body;
the air flow in the static pressure box body enters the spiral flow channel through the funnel-shaped air inlet net;
the flow guide cylinder is arranged at the air outlet, and the flow guide cylinder and the helical blades form a helical flow passage;
the spiral blade is wound on the blade supporting rod and is of a sound absorption structure, so that the noise in the ventilation system can be reduced;
the inner wall of the static pressure box body and the outer wall of the flow guide cylinder are coated with sound absorption materials.
In one embodiment, the top of the funnel-shaped air inlet net is fixed above the interior of the static pressure box body, the bottom of the funnel-shaped air inlet net is connected with the flow guide cylinder, and the funnel-shaped air inlet net is provided with a plurality of rows of air inlet flat holes.
In one embodiment, the bottom inner diameter of the funnel-shaped air inlet net is the same as the inner diameter of the flow guide cylinder.
In one embodiment, the helical blade comprises a rigid clamping plate and a flexible sound absorption material, the rigid clamping plate is clamped at two sides of the flexible sound absorption material, and the rigid clamping plate is fixedly connected with the blade supporting rod.
In one embodiment, the rigid clamping plate is a punched galvanized steel plate, and the flexible sound absorption material is rock wool or superfine glass wool.
In one embodiment, the vertical length of the helical blade is the same as the height of the guide cylinder.
In one embodiment, the sound absorption material comprises rock wool or superfine glass wool, and the surface of the rock wool or the superfine glass wool is coated with non-woven fabric.
In one embodiment, the flow dispersion disc is fixed on an air outlet at the bottom of the static pressure box through a bolt, the flow dispersion disc is formed by combining four flared air guide hoods with gradually increased diameters, and the diameter of the large end of the air guide hood at the inner side between every two adjacent air guide hoods is larger than that of the small end of the air guide hood at the outer side.
In one embodiment, the top of the blade support rod is detachably connected with the top of the static pressure box body.
In one embodiment, an electric butterfly valve is arranged on the air inlet pipe.
According to the marine air conditioner air distributor with the helical blades, air supplied by an air supply pipeline of an air conditioning system is sent into the guide cylinder through the air inlet pipe in the marine air conditioner air distributor with the helical blades, and the helical arrangement of the helical blades greatly increases the contact area and the contact length of sound waves and the sound absorption structure, so that noise energy in the air supplied is further dissipated, and the marine air conditioner air distributor with the helical blades has a good noise reduction effect. Meanwhile, when the supplied air flows through the invention, the flowing direction of the supplied air is not greatly changed, so that sudden pressure drop caused by meeting barriers is avoided, the increased air-conditioning energy consumption caused by the increased pressure loss is avoided, the vortex effect caused by the great change of the flowing direction is reduced, and the pneumatic noise is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a marine air conditioner air distributor with helical blades according to the present invention;
FIG. 2 is a schematic view of the internal structure of the marine air conditioner air distributor with helical blades of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2 in accordance with the present invention;
fig. 5 is a schematic structural view of the diffusion plate of the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that 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.
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 in the description of the invention herein 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.
Referring to fig. 1 to 5, an embodiment of the present invention provides a marine air conditioner air distributor with helical blades, including: the static pressure box body 3, the funnel-shaped air inlet net 5, the guide cylinder 8, the helical blade 7 and the sound absorption material 4.
The static pressure box body 3 is respectively provided with an air inlet 31 and an air outlet 32, the air inlet 31 is connected with the air inlet pipe 1, the air outlet 32 is connected with the flow dispersion disc 10, and the section of the air inlet pipe 1 is smaller than the section of the inner cavity of the static pressure box body 3; therefore, the section of the outlet of the air inlet pipe 1 is suddenly changed, so that the medium and low frequency noises can be reduced. In this embodiment, the side plate and the top plate of the static pressure box body 3 can be connected in a welding or riveting mode, and the bottom plate can be detachably connected by bolts and the like, so that the later disassembly and maintenance are facilitated.
The air flow in the static pressure box body 3 enters the spiral flow channel through the funnel-shaped air inlet net 5; the flow guide cylinder 8 is arranged at the air outlet 32, and the flow guide cylinder 8 and the helical blades 7 form a helical flow passage; the helical blade 7, the helical blade 7 wound on the blade support rod 6 is a sound absorption structure, can reduce the noise in the ventilating system; the inner wall of the static pressure box body 3 and the outer wall of the flow guiding cylinder 8 are coated with sound absorption materials 4.
According to the marine air conditioner air distributor with the helical blades, air supplied by an air supply pipeline of an air conditioning system is sent into the guide cylinder 8 through the air inlet pipe 1 in the marine air conditioner air distributor with the helical blades 7, the helical arrangement of the helical blades 7 greatly increases the contact area and the contact length of sound waves and the sound absorption structure, so that noise energy in the air supplied is further dissipated, and the marine air conditioner air distributor with the helical blades has a good noise reduction effect. Meanwhile, when the supplied air flows through the invention, the flowing direction of the supplied air is not greatly changed, so that sudden pressure drop caused by meeting barriers is avoided, the increased air-conditioning energy consumption caused by the increased pressure loss is avoided, the vortex effect caused by the great change of the flowing direction is reduced, and the pneumatic noise is reduced.
In an embodiment of the present invention, the top of the funnel-shaped air inlet net 5 is fixed above the interior of the static pressure box body 3, the bottom of the funnel-shaped air inlet net 5 is connected with the flow guiding cylinder 8, wherein the funnel-shaped air inlet net 5 is provided with a plurality of rows of flat air inlet holes 51. In this embodiment, the arrangement of the plurality of rows of air inlet flat holes 51 can make the supplied air uniformly enter the funnel-shaped air inlet net 5 from all directions, so as to reduce the impact of the air flow on the sound absorption structure.
In an embodiment of the present invention, the inner diameter of the bottom of the funnel-shaped air inlet net 5 is the same as the inner diameter of the guide cylinder 8. So, the air feed of infundibulate air inlet net 5 can enter into draft cylinder 8 steadily, and it can avoid the air feed wind pressure change that the cross-section change caused, reduces the impact to the sound absorbing structure.
In an embodiment of the present invention, the sound absorption structure includes a rigid clamping plate 71 and a flexible sound absorption material 72, the rigid clamping plate 71 is clamped on both sides of the flexible sound absorption material 72, and the rigid clamping plate 71 is fixedly connected with the blade support rod 6. Specifically, the rigid clamping plate 71 is a punched galvanized steel plate, and the flexible sound absorption material is rock wool or superfine glass wool. The rigid holding plate 71 plays a role of supporting and protecting the flexible sound absorbing material 72, and has a resistance sound absorbing function.
Optionally, the vertical length of the helical blade 7 is the same as the height of the guide cylinder 8. Therefore, the contact area and the contact length of the sound waves and the sound absorption structure can be ensured, and the noise absorption effect is improved. Optionally, the outer diameter of the helical blade 7 should match the inner diameter of the guide cylinder 8 to ensure that there is no play against the inner wall of the guide cylinder 8 after installation.
In an embodiment of the present invention, the sound absorption material 4 includes rock wool or ultra-fine glass wool, and a surface of the rock wool or the ultra-fine glass wool is covered with a non-woven fabric. Thus, the noise absorption effect can be further improved.
In an embodiment of the present invention, the diffuser 10 is fixed to the air outlet 32 at the bottom of the static pressure box 3 by bolts, and the diffuser 10 is formed by combining four bell-mouth-shaped fairings with increasing diameters, wherein the diameter of the large end of the inner fairings between two adjacent fairings should be larger than the diameter of the small end of the outer fairings. Therefore, the situation that the air in the flow channel of the helical blade 7 is directly blown out downwards can be avoided.
In one embodiment of the invention, the top of the blade support rod 6 is detachably connected with the top of the static pressure box body 3. Thus, the helical blade 7 is convenient to disassemble and maintain.
Optionally, an electric butterfly valve 2 is arranged on the air inlet pipe 1. The electric butterfly valve 2 can realize multi-gear air volume adjustment.
The working principle of the invention is as follows:
an air supply pipe of the air conditioning system enters the static pressure box body 3 through an air inlet pipe 1 on the side of the air supply pipe, and the impedance changes suddenly due to sudden expansion of the section, so that the noise elimination of medium and low frequency noise can be realized; then, the supplied air flows in the static pressure box body 3, and the sound absorption material 4 attached to the surfaces of the static pressure box body 3 and the flow guiding cylinder 8 can absorb and dissipate the energy of sound waves, so that the sound absorption of medium and high frequency noise is realized; then, the supplied air enters the flow channel of the helical blade 7 through the funnel-shaped air inlet net 5, and the sound absorption structure of the helical blade 7 can further absorb sound; finally, the supplied air enters the dispersion plate 10 through the air outlet 32 of the static pressure box body 3 and blows to the cabin, and the supplied air is fully mixed with the indoor air to realize air distribution.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-described examples merely represent several embodiments of the present application and are not to be construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a take helical blade's marine air conditioner cloth wind ware which characterized in that includes:
the static pressure box body (3), an air inlet (31) and an air outlet (32) are respectively arranged on the static pressure box body (3), the air inlet (31) is communicated with an air inlet pipe (1), the air outlet (32) is connected with a flow dispersion disc (10), wherein the section of the air inlet pipe (1) is smaller than the section of an inner cavity of the static pressure box body (3);
the air flow in the static pressure box body (3) enters the spiral flow channel through the funnel-shaped air inlet net (5);
the flow guide cylinder (8) is arranged at the air outlet (32), and the flow guide cylinder (8) and the helical blades (7) form a helical flow channel;
the spiral blade (7) is wound on the blade support rod (6), and the spiral blade (7) is of a sound absorption structure, so that the noise in a ventilation system can be reduced;
the inner wall of the static pressure box body (3) and the outer wall of the flow guiding cylinder (8) are coated with sound absorption materials (4).
2. The marine air conditioner air distributor with helical blades as set forth in claim 1, characterized in that the top of the funnel-shaped air intake net (5) is fixed above the interior of the plenum box body (3), and the bottom of the funnel-shaped air intake net (5) is connected with the guide cylinder (8), wherein the funnel-shaped air intake net (5) is provided with a plurality of rows of flat air intake holes (51).
3. Marine air-conditioning air distributor with helical blades according to claim 2, characterised in that the internal diameter of the bottom of the funnel-shaped air inlet net (5) is the same as the internal diameter of the guide cylinder (8).
4. The marine air-conditioning air distributor with the helical blades as claimed in claim 1, wherein the helical blades (7) comprise a rigid clamping plate (71) and a flexible sound-absorbing material (72), the rigid clamping plate (71) is clamped at two sides of the flexible sound-absorbing material (72), and the rigid clamping plate (71) is fixedly connected with the blade support rod (6).
5. The marine air-conditioning air distributor with helical blades as claimed in claim 4, wherein the rigid clamping plate (71) is a punched galvanized steel plate, and the flexible sound-absorbing material (72) is rock wool or ultra-fine glass wool.
6. Marine air-conditioning air distributor with helical blades according to claim 5, characterized in that the vertical length of the helical blades (7) is the same as the height of the guide cylinder (8).
7. The marine air-conditioning air distributor with the helical blades as set forth in claim 1, wherein the sound-absorbing material (4) comprises rock wool or ultra-fine glass wool, and the surface of the rock wool or ultra-fine glass wool is covered with a non-woven fabric.
8. The marine air-conditioning air distributor with the helical blades as set forth in claim 1, wherein the diffuser (10) is fixed on the air outlet (32) at the bottom of the static pressure box (3) by bolts, the diffuser (10) is formed by combining four bell-mouth-shaped air guide hoods with gradually increased diameters, and the diameter of the large end of the air guide hood at the inner side is larger than that of the small end of the air guide hood at the outer side between two adjacent air guide hoods.
9. The marine air-conditioning air distributor with helical blades as claimed in claim 1, characterized in that the top of the blade support bar (6) is detachably connected with the top of the plenum box body (3).
10. The marine air conditioner air distributor with helical blades as claimed in claim 1, wherein the air inlet pipe (1) is provided with an electric butterfly valve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111169404.XA CN113815834A (en) | 2021-10-08 | 2021-10-08 | Marine air conditioner air distributor with helical blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111169404.XA CN113815834A (en) | 2021-10-08 | 2021-10-08 | Marine air conditioner air distributor with helical blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113815834A true CN113815834A (en) | 2021-12-21 |
Family
ID=78916242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111169404.XA Pending CN113815834A (en) | 2021-10-08 | 2021-10-08 | Marine air conditioner air distributor with helical blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113815834A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115646187A (en) * | 2022-11-01 | 2023-01-31 | 山东泰开环保科技有限公司 | Variable entry guiding device and use its denitration reactor |
| CN117566086A (en) * | 2024-01-15 | 2024-02-20 | 江苏亚泰船舶工程有限公司 | Marine air conditioner wind gap module |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120134362A (en) * | 2011-06-02 | 2012-12-12 | 대우조선해양 주식회사 | Diffuser box for vessels |
| CN103453639A (en) * | 2013-06-03 | 2013-12-18 | 海尔集团公司 | Air supply device of floor air conditioner |
| CN204006540U (en) * | 2014-07-25 | 2014-12-10 | 上海惠福空调设备有限公司 | A kind of circular air outlet of central air-conditioning of new structure |
| CN105465992A (en) * | 2014-09-05 | 2016-04-06 | 上海汽车空调配件有限公司 | Silencing element used in car air-conditioning system |
| CN106642638A (en) * | 2017-03-03 | 2017-05-10 | 通航汇丰（大连）舾装有限公司 | Improved wind distributor of single temperature air conditioner for ship |
| CN109533264A (en) * | 2018-11-19 | 2019-03-29 | 江苏科技大学 | A kind of spiral flow channel variable air rate ventilation terminal peculiar to vessel |
| CN209142370U (en) * | 2018-12-07 | 2019-07-23 | 武昌船舶重工集团有限公司 | A kind of ventilation terminal |
| CN209857339U (en) * | 2019-03-29 | 2019-12-27 | 深圳市美兆环境股份有限公司 | Air conditioner and air outlet structure thereof |
| CN112610302A (en) * | 2019-10-06 | 2021-04-06 | 江苏业安环保设备科技有限公司 | Spiral air flue silencer |
| CN213178663U (en) * | 2020-09-29 | 2021-05-11 | 安徽敏建消防工程有限公司 | High-efficient amortization plenum chamber |
-
2021
- 2021-10-08 CN CN202111169404.XA patent/CN113815834A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120134362A (en) * | 2011-06-02 | 2012-12-12 | 대우조선해양 주식회사 | Diffuser box for vessels |
| CN103453639A (en) * | 2013-06-03 | 2013-12-18 | 海尔集团公司 | Air supply device of floor air conditioner |
| CN204006540U (en) * | 2014-07-25 | 2014-12-10 | 上海惠福空调设备有限公司 | A kind of circular air outlet of central air-conditioning of new structure |
| CN105465992A (en) * | 2014-09-05 | 2016-04-06 | 上海汽车空调配件有限公司 | Silencing element used in car air-conditioning system |
| CN106642638A (en) * | 2017-03-03 | 2017-05-10 | 通航汇丰（大连）舾装有限公司 | Improved wind distributor of single temperature air conditioner for ship |
| CN109533264A (en) * | 2018-11-19 | 2019-03-29 | 江苏科技大学 | A kind of spiral flow channel variable air rate ventilation terminal peculiar to vessel |
| CN209142370U (en) * | 2018-12-07 | 2019-07-23 | 武昌船舶重工集团有限公司 | A kind of ventilation terminal |
| CN209857339U (en) * | 2019-03-29 | 2019-12-27 | 深圳市美兆环境股份有限公司 | Air conditioner and air outlet structure thereof |
| CN112610302A (en) * | 2019-10-06 | 2021-04-06 | 江苏业安环保设备科技有限公司 | Spiral air flue silencer |
| CN213178663U (en) * | 2020-09-29 | 2021-05-11 | 安徽敏建消防工程有限公司 | High-efficient amortization plenum chamber |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115646187A (en) * | 2022-11-01 | 2023-01-31 | 山东泰开环保科技有限公司 | Variable entry guiding device and use its denitration reactor |
| CN117566086A (en) * | 2024-01-15 | 2024-02-20 | 江苏亚泰船舶工程有限公司 | Marine air conditioner wind gap module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113815834A (en) | Marine air conditioner air distributor with helical blades | |
| WO2022037304A1 (en) | Air conditioning duct for rail transit vehicle | |
| CN201259294Y (en) | Deflector ring and air conditioner with the deflector ring | |
| CN109533264B (en) | Marine wind distributor of variable blast volume of spiral runner | |
| JP2009107613A (en) | Air flow mixing device | |
| JP2022543721A (en) | Valve silencer and electronic expansion valve having this valve silencer | |
| CN105952687A (en) | Fan silencer | |
| CN204736866U (en) | Amortization wind channel and rail vehicle | |
| JP2724771B2 (en) | Mixing device | |
| CN109367753A (en) | A kind of ship loading cabin noise elimination wind conduit | |
| CN201582959U (en) | Ventilating muffler | |
| CN201662189U (en) | Spiral-flow type air diffuser with fairing | |
| CN207262677U (en) | Wind shield and indoor apparatus of air conditioner | |
| CN207053003U (en) | A kind of ventilation silencer of main transformer of transformer substation room | |
| CN212615634U (en) | Low flow resistance tubular noise elimination room is arranged to big amount of wind tail | |
| CN201953444U (en) | Silencer | |
| CN202046176U (en) | External spiral wind pipe type variable cross-section air supply system | |
| CN210363274U (en) | Automobile air conditioning system pipeline | |
| CN209479945U (en) | A kind of ship loading cabin noise elimination wind conduit | |
| CN113606668A (en) | Air duct structure, air supply system and air conditioner | |
| CN109186069A (en) | A kind of silencing means and air conditioner of air-conditioning | |
| CN211316402U (en) | Air flow equalizing device for air supply of clean air conditioning system | |
| CN207815664U (en) | Air conditioning exhausting component and air conditioner | |
| CN213627326U (en) | Ventilation unit with adjustable noise elimination quantity | |
| CN201041399Y (en) | Tuyere device |
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 |