CN111997940A - Centrifugal fan with adjustable bottom noise - Google Patents
Centrifugal fan with adjustable bottom noise Download PDFInfo
- Publication number
- CN111997940A CN111997940A CN202011028694.1A CN202011028694A CN111997940A CN 111997940 A CN111997940 A CN 111997940A CN 202011028694 A CN202011028694 A CN 202011028694A CN 111997940 A CN111997940 A CN 111997940A
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- Prior art keywords
- air
- volume control
- wall
- air volume
- pipeline
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/003—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by throttling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a centrifugal ventilator with adjustable bottom noise, which comprises a fan body, a base, an air outlet pipeline and an air inlet, wherein the base is welded at the bottom of the fan body, the air outlet pipeline is arranged at the top of the fan body, the air inlet is arranged on the side surface of the fan body and is mutually communicated with the interior of the fan body, a main body mechanism is arranged on the fan body outside the air inlet, and a bottom fixing mechanism is arranged at the bottom of the main body mechanism. Thereby reduce the wind noise that the fan body during operation produced.
Description
Technical Field
The invention relates to the field of centrifugal ventilators, in particular to a centrifugal ventilator with adjustable bottom noise.
Background
The centrifugal ventilator is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion;
in the prior art, the centrifugal ventilator generates large noise in the use process, the influence on the surrounding environment is easily caused, most of the traditional noise reduction modes are that a silencer is added at an air outlet pipe orifice, however, the traditional noise reduction modes can only solve the noise of the pipe orifice and cannot solve the noise generated at the bottom of the fan, and therefore the invention provides the centrifugal ventilator with the adjustable bottom noise.
Disclosure of Invention
The invention aims to provide a centrifugal fan with adjustable bottom noise, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an adjustable centrifugal fan of end noise, includes fan body, base, the air-out mouth of pipe and air intake, the base welding is in the bottom of fan body, the air-out mouth of pipe sets up the top at the fan body, the air intake set up the side of fan body and communicate each other with the fan body is inside, be provided with main part mechanism on the outside fan body of air intake, main part mechanism's bottom is provided with bottom fixed establishment, main part mechanism's top is provided with an amount of wind control mechanism, be provided with No. two amount of wind control mechanisms on main part mechanism's the inner wall.
As a further scheme of the invention, the main body mechanism comprises a welding ring, the welding ring is welded on the fan body outside the air outlet, a plurality of external threads are arranged on the outer wall of the welding ring, a threaded end is connected to the welding ring through the external threads, one end of the threaded end, which is far away from the welding ring, is fixedly communicated with an air flow control pipeline, a limiting rod is fixedly welded on the outside of the air flow control pipeline, and the five limiting rods are arranged and positioned on the same horizontal line.
As a further scheme of the invention, the bottom fixing mechanism comprises a wedge-shaped guide groove, the wedge-shaped guide groove is formed in the outer wall of the air volume control pipeline, the wedge-shaped guide groove is in contact with a supporting leg, the top of the supporting leg is fixedly connected with a guide block, the guide block is slidably connected in a limiting groove in the wedge-shaped guide groove, one end, close to the fan body, of the supporting leg is fixedly connected with a first arc-shaped spring, one end, far away from the supporting leg, of the first arc-shaped spring is fixedly welded to the inner wall of the wedge-shaped guide groove, one side, far away from the first arc-shaped spring, of the supporting leg is fixedly connected with an adjusting rope, the adjusting rope is arranged on the wedge-shaped guide groove and the air volume control pipeline in an inserting mode, and one end, arranged outside the.
As a further proposal of the invention, the first air quantity control mechanism comprises an air outlet pipeline, the air outlet pipeline is fixedly communicated with one side of the air quantity control pipeline far away from the bottom fixing mechanism, the top of the air outlet pipeline is in contact with a wind shield, an air outlet groove penetrates through the wind shield, meshing teeth are fixedly connected on the outer side wall of the wind shield, a power plate is arranged on one side of the wind shield, which is far away from the fan body, a tooth socket is arranged on the outer side wall of the power plate, the tooth grooves are in transmission connection with the meshing teeth, the thickness of the power plate is the same as that of the wind shield and the power plate and the wind shield are positioned on the same horizontal line, the middle part of the bottom of the power plate is fixedly connected with the output end of the motor through a connecting shaft, the motor is fixedly arranged on the outer wall of the air volume control pipeline through a mounting rack, the middle part of the bottom of the wind shield is rotationally connected with a bearing on the outer wall of the air volume control pipeline through a main shaft.
As a further scheme of the invention, the second air volume control mechanism comprises a C-shaped plate, the C-shaped plate is fixedly welded on the inner wall of the air volume control pipeline, two inner walls of the C-shaped plate are respectively provided with an installation bearing, a rotating roller is rotatably connected between the installation bearings of the same C-shaped plate, one side of the rotating roller far away from the inner wall of the air volume control pipeline is respectively and fixedly connected with an air volume control plate, the lower part of the air volume control plate is respectively provided with an electric telescopic rod, the bottom of the electric telescopic rod is respectively installed on the first plate of the inner wall of the air volume control pipeline, the bottom of the air volume control plate at one side of the electric telescopic rod far away from the inner wall of the air volume control pipeline is fixedly connected with a limiting plate, and the top of the air volume control plate is respectively and.
As a further scheme of the invention, the end face of one end, close to the wedge-shaped guide groove, of the supporting leg is wedge-shaped and is attached to the wedge-shaped guide groove.
As a further scheme of the present invention, the center of the air outlet groove and the center of the air outlet duct are on the same vertical line, and the sectional dimension of the air outlet groove is larger than that of the air outlet duct.
As a further scheme of the invention, the included angles between the electric telescopic rod and the inner wall of the air volume control pipeline are both 60 degrees.
Compared with the prior art, the invention has the beneficial effects that:
1. the air quantity control mechanism is arranged, the motor can drive the power plate to rotate, the wind shield is rotated under the meshing action of the tooth grooves in the power plate and the meshing teeth in the wind shield, when the centers of the wind outlet grooves in the wind shield and the wind outlet pipeline are positioned on the same straight line, the wind quantity control pipeline is in a communicated state, air in the wind quantity control pipeline is discharged partially, the wind quantity sucked into the wind quantity control pipeline by the fan body is reduced, and therefore wind noise generated when the fan body works is reduced.
2. The fan body is provided with the second air volume control mechanism, the electric telescopic rod can be started, the air control plates are pushed to rotate through the electric telescopic rod, the air control plates are enabled to be close to each other, when the air control plates are close to each other, the cross section of an air inlet channel formed between the air control plates is reduced, the air volume sucked into the fan body is reduced, and the air noise generated when the fan body works is reduced.
3. The invention is provided with the main mechanism, when the device is installed, the welding ring is firstly welded on the fan body, so that the whole device can be connected on the welding ring through the thread end, and the installation of the device is finished.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the point A in the present invention;
FIG. 3 is a side view of an air volume control duct according to the present invention;
FIG. 4 is a cross-sectional view of a second air volume control mechanism of the present invention.
In the figure: 1. a fan body; 2. a base; 3. an air outlet pipe orifice; 4. an air inlet;
5. a main body mechanism; 51. a threaded end; 52. an air volume control pipeline; 53. a limiting rod; 54. welding a ring;
6. a bottom fixing mechanism; 61. a wedge-shaped guide groove; 62. supporting legs; 63. a guide block; 64. a limiting groove; 65. a first arc spring; 66. adjusting the rope; 67. a limiting suspension loop;
7. a first air volume control mechanism; 71. an air outlet pipeline; 72. a wind deflector; 73. an air outlet groove; 74. meshing teeth; 75. a main shaft; 76. a power plate; 77. a tooth socket; 78. a motor; 79. a mounting frame;
8. a second air volume control mechanism; 81. c-shaped plates; 82. mounting a bearing; 83. rotating the roller; 84. a wind control plate; 85. an electric telescopic rod; 86. a first board; 87. a second arc spring; 88. and a limiting plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, in an embodiment of the present invention, a centrifugal ventilator with adjustable bottom noise includes a blower body 1, a base 2, an air outlet pipe 3 and an air inlet 4, the base 2 is welded at the bottom of the blower body 1, the air outlet pipe 3 is disposed at the top of the blower body 1, the air inlet 4 is disposed at a side surface of the blower body 1 and is communicated with the inside of the blower body 1, a main body mechanism 5 is disposed on the blower body 1 outside the air inlet 4, a bottom fixing mechanism 6 is disposed at the bottom of the main body mechanism 5, a first air volume control mechanism 7 is disposed at the top of the main body mechanism 5, and a second air volume control mechanism 8 is disposed on an inner wall of the main body mechanism.
Wherein, main part mechanism 5 includes welding collar 54, welding collar 54's design has made things convenient for the installation of device, the installation time of device has been reduced, welding collar 54 welds on the fan body 1 in the air outlet outside, be provided with a plurality of external screw threads on welding collar 54's the outer wall, there is screw thread end 51 through external screw thread threaded connection on welding collar 54, the fixed intercommunication air volume control pipeline 52 of one end of keeping away from welding collar 54 on screw thread end 51, the outside fixed welding of air volume control pipeline 52 has gag lever post 53, gag lever post 53 is provided with five and is in on the same water flat line.
Wherein, bottom fixed establishment 6 includes wedge guide way 61, wedge guide way 61 is seted up on the outer wall of air volume control pipeline 52, it has supporting leg 62 to touch on the wedge guide way 61, the top fixedly connected with guide block 63 of supporting leg 62, guide block 63 sliding connection is in the spacing groove 64 on wedge guide way 61, be close to an arc spring 65 of one end fixedly connected with of fan body 1 on the supporting leg 62, the one end fixed welding who keeps away from supporting leg 62 on an arc spring 65 is on the inner wall of wedge guide way 61, the one side fixedly connected with who keeps away from an arc spring 65 on the supporting leg 62 adjusts rope 66, adjust rope 66 and alternate the setting on wedge guide way 61 and air volume control pipeline 52, adjust rope 66 and set up the spacing link 67 of the outside one end fixedly connected with of air volume control pipeline 52.
Wherein, the first air volume control mechanism 7 comprises an air outlet pipeline 71, the air outlet pipeline 71 is fixedly communicated with one side of the air volume control pipeline 52 far away from the bottom fixing mechanism 6, the top of the air outlet pipeline 71 is contacted with an air baffle 72, an air outlet groove 73 is drilled on the air baffle 72 in a penetrating way, a meshing tooth 74 is fixedly connected on the outer side wall of the air baffle 72, a power plate 76 is arranged on one side of the air baffle 72 far away from the fan body 1, a tooth groove 77 is formed on the outer side wall of the power plate 76, the tooth groove 77 is in transmission connection with the meshing tooth 74, the thickness of the power plate 76 is the same as that of the air baffle 72 and is on the same horizontal line, the air baffle 72 can be rotated through the meshing action of the tooth groove 77 on the power plate 76 and the meshing tooth 74 on the air baffle 72, and the air volume control pipeline 52 is in, and then discharge some air in the air volume control pipeline 52, reduce the inside amount of wind that fan body 1 inhales to reduce the wind noise that fan body 1 during operation produced, the bottom middle part of power board 76 passes through the output fixed connection of connecting axle and motor 78, and motor 78 passes through mounting bracket 79 fixed mounting on the outer wall of air volume control pipeline 52, and the bottom middle part of deep bead 72 is connected with the bearing rotation on the outer wall of air volume control pipeline 52 through main shaft 75.
Wherein, the second air volume control mechanism 8 comprises a C-shaped plate 81, the C-shaped plate 81 is fixedly welded on the inner wall of the air volume control pipeline 52, two inner walls of the C-shaped plate 81 are respectively provided with an installation bearing 82, a rotating roller 83 is rotatably connected between the installation bearings 82 of the same C-shaped plate 81, one side of the rotating roller 83 far away from the inner wall of the air volume control pipeline 52 is respectively and fixedly connected with an air volume control plate 84, an electric telescopic rod 85 is respectively arranged below the air volume control plates 84, the bottom of the electric telescopic rod 85 is respectively arranged on a first plate 86 of the inner wall of the air volume control pipeline 52, the bottom of the air volume control plate 84 at one side of the electric telescopic rod 85 far away from the inner wall of the air volume pipeline is fixedly connected with a limit plate 88, the top of the air volume control plate 84 is respectively and fixedly connected with the inner wall of the air volume control pipeline 52 through a second arc, and then make the air control board 84 close to each other, when the air control board 84 is close to each other, the air inlet channel cross-section that forms between it will reduce to reduce fan body 1 and inhale its inside amount of wind, thereby reduce the wind noise that fan body 1 during operation produced.
Wherein, the one end terminal surface that is close to wedge guide way 61 on the supporting leg 62 is wedge and laminating wedge guide way 61 setting.
The center of the air outlet groove 73 and the center of the air outlet pipeline 71 are on the same vertical line, and the sectional dimension of the air outlet groove 73 is larger than that of the air outlet pipeline 71.
Wherein, the included angle between the electric telescopic rod 85 and the inner wall of the air volume control pipeline 52 is 60 degrees, and the inclined arrangement of the electric telescopic rod 85 can more conveniently push the air control plate 84 to rotate.
The working principle of the invention is as follows: firstly, the welding ring 54 is welded on the fan body 1, namely the whole device is connected on the welding ring 54 through the thread end 51, thereby completing the installation of the device, the installation mode is very convenient to operate and does not consume too much time, the motor 78 is started, the motor 78 can drive the power plate 76 to rotate, the power plate 76 and the wind shield 72 have the same thickness and are positioned on the same horizontal line because the tooth grooves 77 and the meshing teeth 74 are in transmission connection, therefore, the wind shield 72 can rotate through the meshing action of the tooth grooves 77 on the power plate 76 and the meshing teeth 74 on the wind shield 72, when the centers of the air outlet grooves 73 on the wind shield 72 and the air outlet pipeline 71 are positioned on the same straight line, the air quantity control pipeline 52 is in a communicated state, further, air in the air quantity control pipeline 52 is discharged partially, and the air quantity absorbed by the fan body 1 is reduced, thereby reduce the wind that fan body 1 during operation produced and make an uproar, start electric telescopic handle 85, through starting electric telescopic handle 85, and then promote the rotation of accuse aerofoil 84 through electric telescopic handle 85, and then make accuse aerofoil 84 be close to each other, when accuse aerofoil 84 is close to each other, the inlet air channel cross-section that forms between it will reduce to reduce fan body 1 and inhale its inside amount of wind, thereby reduce the wind that fan body 1 during operation produced and make an uproar.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides an adjustable centrifugal fan of end noise, includes fan body (1), base (2), air outlet pipe mouth (3) and air intake (4), its characterized in that, base (2) welding is in the bottom of fan body (1), air outlet pipe mouth (3) set up the top at fan body (1), air intake (4) set up in the side of fan body (1) and with fan body (1) inside intercommunication each other, be provided with main part mechanism (5) on fan body (1) of air intake (4) outside, the bottom of main part mechanism (5) is provided with bottom fixed establishment (6), the top of main part mechanism (5) is provided with an air volume control mechanism (7), be provided with No. two air volume control mechanisms (8) on the inner wall of main part mechanism (5).
2. A centrifugal fan with adjustable noise floor as claimed in claim 1, wherein: main part mechanism (5) are including welding collar (54), welding collar (54) welding is on fan body (1) in the air outlet outside, be provided with a plurality of external screw threads on the outer wall of welding collar (54), there is screw thread end (51) through external screw thread threaded connection on welding collar (54), the one end of keeping away from welding collar (54) on screw thread end (51) is fixed to be communicated with air flow control pipeline (52), the external fixation welding of air flow control pipeline (52) has gag lever post (53), gag lever post (53) are provided with five and are in on same water flat line.
3. A centrifugal fan with adjustable noise floor as claimed in claim 2, wherein: bottom fixed establishment (6) includes wedge guide way (61), wedge guide way (61) are seted up on the outer wall of wind volume control pipeline (52), it has supporting leg (62) to touch on wedge guide way (61), the top fixedly connected with guide block (63) of supporting leg (62), guide block (63) sliding connection is in spacing groove (64) on wedge guide way (61), the one end fixedly connected with arc spring (65) that is close to fan body (1) on supporting leg (62), the one end fixed welding that keeps away from supporting leg (62) on arc spring (65) is on the inner wall of wedge guide way (61), one side fixedly connected with that keeps away from arc spring (65) on supporting leg (62) adjusts rope (66), adjust rope (66) and alternate the setting on wedge guide way (61) and wind volume control pipeline (52), the adjusting rope (66) is arranged at one end outside the air volume control pipeline (52) and is fixedly connected with a limiting hanging ring (67).
4. A centrifugal fan with adjustable noise floor as claimed in claim 2, wherein: the first air volume control mechanism (7) comprises an air outlet pipeline (71), the air outlet pipeline (71) is fixedly communicated with one side, far away from the bottom fixing mechanism (6), of the air volume control pipeline (52), the top of the air outlet pipeline (71) is contacted with a wind shield (72), an air outlet groove (73) is formed in the wind shield (72) in a penetrating mode, meshing teeth (74) are fixedly connected to the outer side wall of the wind shield (72), a power plate (76) is arranged on one side, far away from the fan body (1), of the wind shield (72), a tooth groove (77) is formed in the outer side wall of the power plate (76), the tooth groove (77) and the meshing teeth (74) are in transmission connection, the thickness of the power plate (76) and the wind shield (72) is the same and is located on the same horizontal line, and the middle of the bottom of the power plate (76) is fixedly connected with an output end of a motor (, the motor (78) is fixedly mounted on the outer wall of the air volume control pipeline (52) through a mounting frame (79), and the middle of the bottom of the air baffle (72) is rotatably connected with a bearing on the outer wall of the air volume control pipeline (52) through a main shaft (75).
5. A centrifugal fan with adjustable noise floor as claimed in claim 2, wherein: the second air volume control mechanism (8) comprises a C-shaped plate (81), the C-shaped plate (81) is fixedly welded on the inner wall of the air volume control pipeline (52), the two inner walls of the C-shaped plate (81) are both provided with mounting bearings (82), a rotating roller (83) is rotatably connected between the mounting bearings (82) of the same C-shaped plate (81), one side of the rotating roller (83) far away from the inner wall of the air volume control pipeline (52) is fixedly connected with an air volume control plate (84), electric telescopic rods (85) are arranged below the air control plates (84), the bottoms of the electric telescopic rods (85) are all arranged on a first plate (86) on the inner wall of the air control pipeline (52), the bottom of the air control plate (84) at one side of the electric telescopic rod (85) far away from the inner wall of the air volume pipeline is fixedly connected with a limit plate (88), the top of each air control plate (84) is fixedly connected with the inner wall of the air volume control pipeline (52) through a second arc-shaped spring (87).
6. A centrifugal fan with adjustable noise floor as claimed in claim 3, wherein: the end face of one end, close to the wedge-shaped guide groove (61), of the support leg (62) is wedge-shaped and is attached to the wedge-shaped guide groove (61).
7. A centrifugal fan with adjustable noise floor as claimed in claim 4, wherein: the center of the air outlet groove (73) and the center of the air outlet pipeline (71) are positioned on the same vertical line, and the section size of the air outlet groove (73) is larger than that of the air outlet pipeline (71).
8. A centrifugal fan with adjustable noise floor as claimed in claim 5, wherein: the included angle between the electric telescopic rod (85) and the inner wall of the air volume control pipeline (52) is 60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011028694.1A CN111997940A (en) | 2020-09-27 | 2020-09-27 | Centrifugal fan with adjustable bottom noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011028694.1A CN111997940A (en) | 2020-09-27 | 2020-09-27 | Centrifugal fan with adjustable bottom noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111997940A true CN111997940A (en) | 2020-11-27 |
Family
ID=73474960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011028694.1A Pending CN111997940A (en) | 2020-09-27 | 2020-09-27 | Centrifugal fan with adjustable bottom noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111997940A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117212259A (en) * | 2023-10-13 | 2023-12-12 | 安徽安风风机有限公司 | Induced draft fan dust removing system and method for boiler |
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| CN103671286A (en) * | 2012-09-02 | 2014-03-26 | 湖北省风机厂有限公司 | Inlet guide vane regulating mechanism of high pressure fan |
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| CN208966640U (en) * | 2018-10-18 | 2019-06-11 | 河北众邦节能科技服务有限公司 | A kind of centrifugal ventilation fan |
| CN210087649U (en) * | 2019-05-20 | 2020-02-18 | 浙江精创风机有限公司 | High-pressure centrifugal fan |
| CN111456953A (en) * | 2020-04-08 | 2020-07-28 | 江苏超惠特种风机有限公司 | Explosion-proof frequency conversion energy-saving centrifugal fan |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725575A (en) * | 2009-11-20 | 2010-06-09 | 无锡杰尔压缩机有限公司 | Supporting special noise elimination air release assembled valve of high-speed centrifugal fan |
| CN103671286A (en) * | 2012-09-02 | 2014-03-26 | 湖北省风机厂有限公司 | Inlet guide vane regulating mechanism of high pressure fan |
| CN205618436U (en) * | 2016-04-27 | 2016-10-05 | 徐工集团工程机械有限公司 | Centrifugal fan and vehicle |
| CN108386375A (en) * | 2018-04-23 | 2018-08-10 | 郑州仟嘉安环保科技有限公司 | A kind of low-noise centrifugal fan |
| CN208966640U (en) * | 2018-10-18 | 2019-06-11 | 河北众邦节能科技服务有限公司 | A kind of centrifugal ventilation fan |
| CN210087649U (en) * | 2019-05-20 | 2020-02-18 | 浙江精创风机有限公司 | High-pressure centrifugal fan |
| CN111456953A (en) * | 2020-04-08 | 2020-07-28 | 江苏超惠特种风机有限公司 | Explosion-proof frequency conversion energy-saving centrifugal fan |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117212259A (en) * | 2023-10-13 | 2023-12-12 | 安徽安风风机有限公司 | Induced draft fan dust removing system and method for boiler |
| CN117212259B (en) * | 2023-10-13 | 2024-02-20 | 安徽安风风机有限公司 | Induced draft fan dust removing system and method for boiler |
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Application publication date: 20201127 |