CN113107158A - Assembled air shaft silencer - Google Patents
Assembled air shaft silencer Download PDFInfo
- Publication number
- CN113107158A CN113107158A CN202110380197.6A CN202110380197A CN113107158A CN 113107158 A CN113107158 A CN 113107158A CN 202110380197 A CN202110380197 A CN 202110380197A CN 113107158 A CN113107158 A CN 113107158A
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- Prior art keywords
- mounting
- frame
- silencer
- fixing
- mounting frame
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Links
- 230000003584 silencer Effects 0.000 title claims abstract description 67
- 238000009434 installation Methods 0.000 claims description 46
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/04—Air-ducts or air channels
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses an assembled air shaft silencer, comprising: the silencer comprises a mounting frame and a silencer arranged in the mounting frame; the mounting bracket includes: a first mounting bracket and a second mounting bracket; the number of the first mounting frames is multiple, the first mounting frames are connected with one another, the number of the second mounting frames is two, and the two second mounting frames are respectively arranged at two ends of the first mounting frames after being connected with one another; the first mounting frame and the second mounting frame are both of U-shaped structures, and silencers are mounted in the U-shaped structures of the first mounting frame and the second mounting frame; the first mounting frame and the second mounting frame are both mounted on a wall body in the wind well. According to the invention, the mounting rack is divided into the first mounting racks and the second mounting racks and is mounted on the wall body in the wind well in a segmented manner, so that the mounting difficulty is greatly reduced in the segmented mounting manner, the mounting time is further saved, and the time and the labor are saved.
Description
Technical Field
The invention relates to the technical field of air shaft noise elimination, in particular to an assembled air shaft silencer.
Background
At present, in the electromechanical installation construction, in order to reduce the huge noise when the fan operates and reduce the noise pollution, a silencer is often installed in an air exhaust air shaft or an air inlet air shaft of a building.
Patent CN207959821U discloses a noise cancelling structure for vertical air shaft, relate to the air shaft field of eliminating the noise, the device is including locating the annular groove in the air shaft wall, jib and a plurality of silencer, the annular groove includes first annular groove and the second annular groove that the interval set up from top to bottom, the jib includes a plurality of first jibs and a plurality of second jib, the both ends detachable of first jib is located in the first annular groove, the both ends detachable of second jib is located in the second annular groove, the silencer both ends are detachable respectively and are connected on first jib and second jib.
However, the existing air shaft silencer mounting frame is high in mounting height, and the existing air shaft silencer mounting frame is only longitudinally detachably mounted, but still transversely mounted in an integral structure, so that the air shaft silencer mounting frame is very inconvenient to mount when the transverse distance is too long, the construction cost is increased, the mounting time is prolonged, time and labor are wasted, the silencer is easily damaged, and the air shaft silencer mounting frame is not favorable for mounting the air shaft silencer.
Disclosure of Invention
Aiming at the defects of the prior art, the invention designs an assembled air shaft silencer, which comprises: the silencer comprises a mounting frame and a silencer arranged in the mounting frame; the mounting bracket includes: a first mounting bracket and a second mounting bracket; the number of the first mounting frames is multiple, the first mounting frames are connected with one another, the number of the second mounting frames is two, and the two second mounting frames are respectively arranged at two ends of the first mounting frames after being connected with one another; the first mounting frame and the second mounting frame are both of U-shaped structures, and silencers are mounted in the U-shaped structures of the first mounting frame and the second mounting frame; the first mounting frame and the second mounting frame are both mounted on a wall body in the wind well.
Preferably, the first mounting frame and the second mounting frame respectively comprise a plurality of groups of muffler mounting frames which are connected with each other; the silencer mounting frame comprises two first mounting parts which are vertically arranged and a second mounting part which is horizontally arranged; the two first mounting parts and the second mounting part are connected in a U-shaped structure, and the silencer is mounted in the U-shaped structure of the silencer mounting frame; the first mounting frame and the second mounting frame respectively comprise third mounting parts, the number of the third mounting parts is two, the two third mounting parts are respectively arranged at the joint of the first mounting part and the second mounting part, the multiple groups of silencer mounting frames are connected through the third mounting parts, the adjacent first mounting frames are connected through the third mounting parts, the first mounting frame is connected with the second mounting frame through the third mounting parts, and the first mounting frame and the second mounting frame are fixed on a wall body in the wind well through the third mounting parts.
Preferably, the third installation part is provided with a first fixing frame, the first fixing frame is arranged in the middle of the third installation part, and the first installation frame and the second installation frame are fixed on a wall body in the wind well through the first fixing frame.
Preferably, two ends of the third mounting part are respectively provided with a second fixing frame; the adjacent first mounting bracket is connected through the second mount, and first mounting bracket is connected with the second mounting bracket through the second mount, and the second mounting bracket is fixed on the wall body in the wind well through the second mount.
Preferably, the second mounting frame further comprises a third mounting frame, the third mounting frame is of an inclined structure, the top of the inclined structure is connected with the bottom of the third mounting portion, and the bottom of the inclined structure is fixed on a wall body in the wind well.
Preferably, the fabricated air shaft silencer further comprises first bolts, the second fixing frames of the adjacent first mounting frames are connected through the first bolts, and the second fixing frames of the first mounting frames are connected with the second fixing frames of the second mounting frames through the first bolts.
Preferably, the assembled air shaft silencer further comprises a second bolt, the first fixing frames of the first mounting frame and the second mounting frame are fixed on the wall body in the air shaft through the second bolt, the second fixing frame of the second mounting frame is fixed on the wall body in the air shaft through the second bolt, and the third fixing frame of the second mounting frame is fixed on the wall body in the air shaft through the second bolt.
Preferably, the silencer mounting bracket further comprises a limiting frame, and the limiting frame is arranged at the top of the inner side of the U-shaped structure and is fixedly connected with the first mounting part.
Preferably, the first installation part and the second installation part of the silencer installation frame both adopt a frame structure.
Preferably, the surfaces of the first mounting frame and the second mounting frame are provided with anticorrosive layers.
Compared with the closest prior art, the invention has the beneficial effects that:
1. according to the assembled air shaft silencer disclosed by the invention, the mounting rack is divided into the first mounting racks and the second mounting racks and is mounted on the wall body in the air shaft in a segmented manner, so that the mounting difficulty is greatly reduced in a segmented mounting manner, the mounting time is further saved, and the time and the labor are saved.
2. The first installation part and the second installation part of the assembled air shaft silencer are both manufactured by adopting a frame holding process, the problems of deformation, damage and difficulty in fixing of the silencer in the traditional process are solved, the strength and firmness of a finished product are greatly improved, the silencer can be fixed by inserting the silencer into the frame holding process, the installation is simple in the construction process, and the installation speed is greatly improved.
Drawings
Fig. 1 is a schematic structural view of a fabricated air shaft silencer according to the present invention.
Fig. 2 is a schematic structural diagram of the first mounting frame of the present invention.
Fig. 3 is a schematic structural diagram of a second mounting bracket according to the present invention.
Fig. 4 is a schematic view of the installation of the muffler of the present invention.
Fig. 5 is a schematic structural view of the spacing frame of the present invention.
FIG. 6 is a schematic view of a joint structure of a second fixing frame according to the present invention.
FIG. 7 is a side view of a joint of a second fastening frame of the present invention.
FIG. 8 is a schematic view of the first fixing frame of the present invention.
Fig. 9 is a schematic view of the installation of the second fixing frame and the third fixing frame of the present invention.
Reference numerals:
1-a first mounting frame, 11-a first mounting part, 12-a second mounting part, 13-a third mounting part, 14-a first fixing frame, 15-a second fixing frame, 16-a limiting frame, 17-a first bolt, 18-a second bolt, 2-a second mounting frame, 21-a third fixing frame, 3-a silencer and 4-a wall body.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1 to 9, the present invention provides a fabricated damper for a wind well, comprising: a mounting frame and a silencer 3 arranged in the mounting frame; the mounting bracket includes: a first mounting bracket 1 and a second mounting bracket 2. Wherein, the quantity of first mounting bracket 1 is a plurality of, a plurality of first mounting bracket 1 interconnect, and the quantity of second mounting bracket 2 is two, and two second mounting brackets 2 set up the both ends behind a plurality of first mounting bracket 1 interconnect respectively. The first mounting frame 1 and the second mounting frame 2 are both of a U-shaped structure, and the silencers 3 are mounted in the U-shaped structures of the first mounting frame 1 and the second mounting frame 2. The first mounting frame 1 and the second mounting frame 2 are both mounted on a wall 4 in the wind well. Through being divided into a plurality of first mounting brackets 1 and two second mounting brackets 2 with the sectional form install on the wall body in the wind well, the degree of difficulty of installation has significantly reduced to the sectional mounting means, and then has practiced thrift the time of installation, labour saving and time saving.
In a preferred embodiment, the first mounting bracket 1 and the second mounting bracket 2 each comprise a plurality of sets of interconnected muffler mounting brackets. The muffler mounting bracket comprises two vertically arranged first mounting parts 11 and a horizontally arranged second mounting part 12. Two first installation department 11 and a second installation department 12 all are the U-shaped structural connection, and the silencer is installed in the U-shaped structure of silencer mounting bracket. Wherein the length of first installation department 11 and the high phase-match of silencer piece, the length of second installation department 12 and the width phase-match of silencer, first mounting bracket 1 and second mounting bracket 2 all still include third installation department 13, the quantity of third installation department 13 is two, two third installation departments 13 set up the junction at first installation department 11 and second installation department 12 respectively, multiunit silencer mounting bracket is connected through third installation department 13, adjacent first mounting bracket 1 is connected through third installation department 13, first mounting bracket 1 is connected with second mounting bracket 2 through third installation department 13, first mounting bracket 1 and second mounting bracket 2 are all fixed on wall body 4 in the wind well through third installation department 13.
In a preferred embodiment, the first mounting portion 11 and the second mounting portion 12 of the muffler mounting bracket are both made by a frame process. The frame holding process is that the first installation part 11 and the second installation part 12 are U-shaped structures, so that the silencer sheet is prevented from shaking left and right after being placed in. Adopt and embrace frame technology preparation, solved the deformation damage of muffler in traditional technology and the problem of difficult fixing, finished product intensity and fastness obtain very big improvement, insert the muffler and embrace the frame and can fix, the installation is simple in the work progress, very big improvement the installation rate.
In another preferred embodiment, the first mounting portion 11 and the second mounting portion 12 are made of angle steel, the number of the angle steel used for each of the first mounting portion 11 and the second mounting portion 12 is two, and the two angle steels are fixed in a U-shaped structure. Preferably, the angle steel adopts 30 x 3 angle steel, and two angle steels are placed in a U-shaped structure, wherein the width of the U-shaped structure is matched with the thickness of the silencer, wherein the length of the angle steel adopted by the first installation part 11 is matched with the height of the silencer piece, and the length of the angle steel adopted by the second installation part 12 is matched with the width of the silencer. The size that embraces the frame technology setting with the silencer mounting bracket matches with the size of silencer piece, only needs to insert the silencer during installation and embraces the frame and can fix, and the installation is simple in the work progress, very big improvement the installation rate.
In a preferred embodiment, the third mounting portion 13 is provided with a first fixing frame 14, the first fixing frame 14 is arranged at a middle position of the third mounting portion 13, and the first mounting frame 1 and the second mounting frame 2 are fixed on the wall 4 in the wind well through the first fixing frame 14.
In a preferred embodiment, the second fixing frame 15 is respectively disposed at two ends of the third mounting portion 13. The adjacent first mounting bracket 1 is connected through the second mount 15, and first mounting bracket 1 is connected with second mounting bracket 2 through second mount 15, and second mounting bracket 2 is fixed on wall body 4 in the wind well through second mount 15.
In a preferred embodiment, the second mounting frame 2 further includes a third fixing frame 21, the third fixing frame 21 is an inclined structure, a top of the inclined structure is connected with a bottom of the third mounting portion 13, and the bottom of the inclined structure is fixed on the wall 4 in the wind well.
In a preferred embodiment, the fabricated air shaft silencer further comprises first bolts 17, the second fixing frames 15 of the adjacent first mounting frames 1 are connected through the first bolts 17, and the second fixing frames 15 of the first mounting frames 1 are connected with the second fixing frames 15 of the second mounting frames 2 through the first bolts 17.
In a preferred embodiment, the fabricated air shaft silencer further comprises a second bolt 18, the first fixing frame 14 of the first mounting frame 1 and the second mounting frame 2 are fixed on the wall 4 in the air shaft through the second bolt 18, the second fixing frame 15 of the second mounting frame 2 is fixed on the wall 4 in the air shaft through the second bolt 18, and the third fixing frame 21 of the second mounting frame 2 is fixed on the wall 4 in the air shaft through the second bolt 18.
In a preferred embodiment, the muffler mounting bracket further includes a limiting bracket 16, and the limiting bracket 16 is disposed at the top of the inside of the U-shaped structure and is fixedly connected to the first mounting portion 11. The limiting frame 16 can prevent the silencer from moving upwards, so that the silencer can be fixed conveniently, and the problem that the silencer is not fixed easily is solved.
In a preferred embodiment, the surfaces of the first and second mounting frames 1 and 2 are provided with a corrosion protection layer. Preferably, the anticorrosive coating is the silver paint of painting once again for two times of painting earlier, so not only can prevent that the mounting bracket from being corroded and damaged, silver paint can also improve the aesthetic measure of mounting bracket moreover.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention is included in the scope of the claims of the present invention filed as filed.
Claims (10)
1. An assembled air shaft silencer, comprising: a mounting frame and a muffler (3) mounted in the mounting frame;
the mounting bracket includes: a first mounting frame (1) and a second mounting frame (2); the number of the first mounting racks (1) is multiple, the first mounting racks (1) are connected with one another, the number of the second mounting racks (2) is two, and the two second mounting racks (2) are respectively arranged at two ends of the first mounting racks (1) after being connected with one another;
the first mounting frame (1) and the second mounting frame (2) are both of U-shaped structures, and silencers (3) are mounted in the U-shaped structures of the first mounting frame (1) and the second mounting frame (2);
the first mounting rack (1) and the second mounting rack (2) are both mounted on a wall body (4) in the wind well.
2. A fabricated wind shaft silencer according to claim 1, c h a r a c t e r i z e d in that the first (1) and second (2) mounting frames each comprise a plurality of sets of interconnected silencer mounting frames;
the muffler mounting rack comprises two first mounting parts (11) which are vertically arranged and a second mounting part (12) which is horizontally arranged; the two first mounting parts (11) and the second mounting part (12) are connected in a U-shaped structure, and the silencer is mounted in the U-shaped structure of the silencer mounting frame;
first mounting bracket (1) with second mounting bracket (2) all still include third installation department (13), the quantity of third installation department (13) is two, two third installation department (13) sets up respectively first installation department (11) with the junction of second installation department (12), the multiunit the silencer mounting bracket passes through third installation department (13) is connected, and is adjacent first mounting bracket (1) passes through third installation department (13) is connected, first mounting bracket (1) passes through third installation department (13) with second mounting bracket (2) is connected, first ann is ampere
The mounting frame (1) and the second mounting frame (2) are fixed on a wall body (4) in the wind well through the third mounting part (13).
3. The fabricated air shaft silencer according to claim 2, wherein a first fixing frame (14) is arranged on the third mounting portion (13), the first fixing frame (14) is arranged in the middle of the third mounting portion (13), and the first mounting frame (1) and the second mounting frame (2) are fixed on a wall body (4) in the air shaft through the first fixing frame (14).
4. A fabricated air shaft silencer according to claim 3, wherein both ends of the third mounting portion (13) are respectively provided with a second fixing frame (15); the adjacent first mounting rack (1) is connected through the second fixing rack (15), the first mounting rack (1) is connected with the second mounting rack (2) through the second fixing rack (15), and the second mounting rack (2) is fixed on a wall body (4) in the wind well through the second fixing rack (15).
5. The fabricated blast well silencer according to claim 4, wherein the second mounting frame (2) further comprises a third fixing frame (21), the third fixing frame (21) is an inclined structure, the top of the inclined structure is connected with the bottom of the third mounting part (13), and the bottom of the inclined structure is fixed on the wall body (4) in the blast well.
6. The fabricated blast well silencer according to claim 4, further comprising a first bolt (17), wherein the second fixing frames (15) of the adjacent first mounting frames (1) are connected by the first bolt (17), and the second fixing frames (15) of the first mounting frames (1) and the second fixing frames (15) of the second mounting frames (2) are connected by the first bolt (17).
7. The fabricated blast well silencer according to claim 5, further comprising a second bolt (18), wherein the first fixing frame (14) of the first mounting frame (1) and the second mounting frame (2) are fixed on the wall (4) in the blast well by the second bolt (18), the second fixing frame (15) of the second mounting frame (2) is fixed on the wall (4) in the blast well by the second bolt (18), and the third fixing frame (21) of the second mounting frame (2) is fixed on the wall (4) in the blast well by the second bolt (18).
8. The fabricated air shaft silencer according to claim 2, wherein the silencer mounting bracket further comprises a limiting bracket (16), and the limiting bracket (16) is arranged at the top of the inner side of the U-shaped structure and fixedly connected with the first mounting portion (11).
9. A fabricated blast well silencer according to claim 2, wherein said first mounting portion (11) and said second mounting portion (12) of said silencer mounting bracket each adopt a frame structure.
10. A fabricated air shaft silencer according to claim 1, characterized in that the surfaces of the first mounting frame (1) and the second mounting frame (2) are provided with a corrosion protection layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110380197.6A CN113107158B (en) | 2021-04-09 | 2021-04-09 | Assembled air shaft silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110380197.6A CN113107158B (en) | 2021-04-09 | 2021-04-09 | Assembled air shaft silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113107158A true CN113107158A (en) | 2021-07-13 |
| CN113107158B CN113107158B (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110380197.6A Active CN113107158B (en) | 2021-04-09 | 2021-04-09 | Assembled air shaft silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113107158B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204476517U (en) * | 2015-02-25 | 2015-07-15 | 厦门嘉达环保建造工程有限公司 | Wind Volume composite muffler |
| CN206708102U (en) * | 2017-03-21 | 2017-12-05 | 盈普声学（惠州）有限公司 | Air outlet silencing device |
| CN108534340A (en) * | 2018-05-04 | 2018-09-14 | 南方风机股份有限公司 | A kind of nuclear power station ventilating system duct type silencer of dismantled and assembled antidetonation |
| CN207865667U (en) * | 2017-09-21 | 2018-09-14 | 北京天润康隆科技股份有限公司 | A kind of type micro-hole rock silencer |
| CN208295992U (en) * | 2018-05-29 | 2018-12-28 | 武汉市世纪静声环保技术有限公司 | A kind of duct type noise eliminating silencer |
| CN208831332U (en) * | 2018-08-15 | 2019-05-07 | 厦门市李氏工贸有限公司 | A kind of cross beam type antidetonation fan air channel bracket |
| CN109899618A (en) * | 2019-04-04 | 2019-06-18 | 江苏远兴环保集团有限公司 | A kind of metal shell formula pipeline silencer |
| US20200200434A1 (en) * | 2018-12-19 | 2020-06-25 | VAW Systems Ltd. | Trailing member to reduce pressure drop across a duct mounted sound attenuating baffle |
| CN211082408U (en) * | 2019-12-17 | 2020-07-24 | 青岛理工大学 | Microperforated panel combined type silencer |
| CN211525201U (en) * | 2019-12-03 | 2020-09-18 | 常州市江南环保设备有限公司 | Vertical fan silencer |
-
2021
- 2021-04-09 CN CN202110380197.6A patent/CN113107158B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204476517U (en) * | 2015-02-25 | 2015-07-15 | 厦门嘉达环保建造工程有限公司 | Wind Volume composite muffler |
| CN206708102U (en) * | 2017-03-21 | 2017-12-05 | 盈普声学（惠州）有限公司 | Air outlet silencing device |
| CN207865667U (en) * | 2017-09-21 | 2018-09-14 | 北京天润康隆科技股份有限公司 | A kind of type micro-hole rock silencer |
| CN108534340A (en) * | 2018-05-04 | 2018-09-14 | 南方风机股份有限公司 | A kind of nuclear power station ventilating system duct type silencer of dismantled and assembled antidetonation |
| CN208295992U (en) * | 2018-05-29 | 2018-12-28 | 武汉市世纪静声环保技术有限公司 | A kind of duct type noise eliminating silencer |
| CN208831332U (en) * | 2018-08-15 | 2019-05-07 | 厦门市李氏工贸有限公司 | A kind of cross beam type antidetonation fan air channel bracket |
| US20200200434A1 (en) * | 2018-12-19 | 2020-06-25 | VAW Systems Ltd. | Trailing member to reduce pressure drop across a duct mounted sound attenuating baffle |
| CN109899618A (en) * | 2019-04-04 | 2019-06-18 | 江苏远兴环保集团有限公司 | A kind of metal shell formula pipeline silencer |
| CN211525201U (en) * | 2019-12-03 | 2020-09-18 | 常州市江南环保设备有限公司 | Vertical fan silencer |
| CN211082408U (en) * | 2019-12-17 | 2020-07-24 | 青岛理工大学 | Microperforated panel combined type silencer |
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| Publication number | Publication date |
|---|---|
| CN113107158B (en) | 2022-07-26 |
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