CN111779697B - Rotation regulation formula centrifugal fan - Google Patents
Rotation regulation formula centrifugal fan Download PDFInfo
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- CN111779697B CN111779697B CN202010822804.5A CN202010822804A CN111779697B CN 111779697 B CN111779697 B CN 111779697B CN 202010822804 A CN202010822804 A CN 202010822804A CN 111779697 B CN111779697 B CN 111779697B
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- adjusting
- wall
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- blade
- air outlet
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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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
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
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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
- F04D29/002—Details, component parts, or accessories 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
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a rotary adjusting type centrifugal ventilator, and relates to the technical field of centrifugal ventilators; in order to guarantee the output effect while adjusting; the centrifugal fan comprises a main body, wherein an air outlet pipe is arranged on one side of the main body, and a centrifugal motor is arranged in the main body; an adjusting mechanism for adjusting the air outlet area is arranged at the port of the air outlet pipe, the adjusting mechanism comprises adjusting blades and a blade seat which are uniformly and circumferentially distributed, and the adjusting blades are arranged on the inner wall of the blade seat through blade grooves; the blade seat is arranged on the outer walls of the two sides of the air outlet pipe through two connecting frames; the spout has all been seted up to adjusting blade one side outer wall, and adjusting blade opposite side outer wall all has the pulley, pulley and spout adaptation through the support mounting. The air outlet area of the air outlet pipe can be conveniently and reliably adjusted by arranging the adjusting blades, the rollers, the adjusting grooves and other structures, and the adjusting blades are integrally distributed in a central shutter type structure, so that the adjustment of the air outlet area is symmetrical about the outlet center of the air outlet pipe.
Description
Technical Field
The invention relates to the technical field of centrifugal ventilators, in particular to a rotary adjusting type centrifugal ventilator.
Background
The centrifugal fan accelerates gas by using an impeller rotating at a high speed according to the principle that kinetic energy is converted into potential energy, and then decelerates and changes the flow direction so as to convert the kinetic energy into the potential energy; at present, if the output wind speed is changed, a mode of controlling the power of a motor is mostly adopted, although the mode can achieve the effect of controlling the wind speed, if the output wind is further transmitted, the wind power is always required to be increased, energy is not wasted, and some centrifugal fans change the wind power by adopting a mode of changing the output area of an output end, the mode can adjust the action range of the output wind according to the requirement, the output wind is further and more concentrated when the area is smaller and the output wind is relatively closer but more dispersed when the area is larger and has the same power; the output area is adjusted by adopting a common shielding mode; the output effect of the shielded area is attenuated relative to the cylindrical output area; therefore, an adjustable centrifugal fan with good output effect is needed.
Through the retrieval, chinese patent application number is CN 201920792558.6's patent, discloses an adjusting device for adjusting two air intake amount of wind sizes of double suction centrifugal fan, including the double suction centrifugal fan body, the double suction centrifugal fan body includes fan body reducing pipe and a pair of fan body trouser legs, the top air outlet of a pair of fan body trouser legs with the exit butt joint of fan body reducing pipe be provided with in the exit of fan body reducing pipe one and be used for adjusting the adjusting vane of a pair of fan body trouser legs air output, adjusting vane and one setting are in the outside drive arrangement of double suction centrifugal fan body is connected. The adjusting blade in the above patent has the following disadvantages: the shielding is realized by rotating the adjusting blade, the adjusting blade is single in structure, wind power cannot be gathered better, and the output effect after adjustment is influenced.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a rotary adjusting type centrifugal fan.
In order to achieve the purpose, the invention adopts the following technical scheme:
a rotary adjusting type centrifugal ventilator comprises a main body, wherein an air outlet pipe is arranged on one side of the main body, and a centrifugal motor is arranged in the main body; an adjusting mechanism for adjusting the air outlet area is arranged at the port of the air outlet pipe, the adjusting mechanism comprises adjusting blades and a blade seat which are uniformly and circumferentially distributed, and the adjusting blades are arranged on the inner wall of the blade seat through blade grooves; the blade seat is arranged on the outer walls of the two sides of the air outlet pipe through two connecting frames; the outer wall of one side of each adjusting blade is provided with a sliding chute, the outer wall of the other side of each adjusting blade is provided with a pulley through a support, the pulleys are matched with the sliding chutes, and each adjusting blade is connected to the inner wall of the sliding chute of the adjacent adjusting blade in a sliding manner through the pulley; the outer walls of the bottoms of the adjusting blades are provided with idler wheels through mounting shafts, the inner wall of the bottom of the blade seat is provided with an adjusting groove, and the idler wheels are connected to the inner wall of the adjusting groove in a sliding manner; the whole adjusting blades are distributed in a central shutter type structure; the bottom of the blade seat is provided with a toggle mechanism for controlling the displacement of the roller.
Preferably: the poking mechanism comprises an adjusting seat and poking ribs, the poking ribs are integrally and uniformly arranged on the outer wall of the top of the adjusting seat, and the poking ribs are matched with the rollers in quantity and position; the outer wall of the inner ring of the adjusting seat is connected to the inner wall of the circumference of the blade seat in a sliding manner, the outer wall of the bottom of the adjusting seat is integrally provided with a connecting ring, and the adjusting seat is connected to the inner wall of the top end of the air outlet pipe in a sliding manner through the connecting ring; and a fixing mechanism for fixing the adjusting seat is also arranged below the adjusting seat.
Further: the fixing mechanism comprises a connecting seat and an annular ball seat, the annular ball seat is integrally arranged on the inner wall of the circumference of the connecting seat, and a fixing piece for fixing the adjusting seat is arranged on the inner wall of the top of the annular ball seat; the outer wall welding of connecting seat bottom has evenly distributed's spring, and the spring other end all welds in air-out pipe top outer wall.
Further preferred is: the outer wall of the bottom of the connecting seat is fixed with evenly distributed sliding columns through screws, and the connecting seat is connected to the inner wall of the top of the air outlet pipe through the sliding columns in a sliding mode.
As a preferable aspect of the present invention: the fixing pieces are rolling balls which are uniformly and circumferentially distributed; the outer wall of the bottom of the adjusting seat is provided with a ball groove matched with the rolling ball.
Further preferred as the invention: the outer wall of the bottom of the adjusting seat is provided with an annular groove, and the ball groove is arranged on the inner wall of the top of the annular groove.
As a still further scheme of the invention: the outer walls of the two sides of the adjusting seat are both fixed with handles through screws; the circumferential outer wall of the handle is rotatably connected with a rotary pressing block.
On the basis of the scheme: the outer wall of the top of the connecting seat is provided with scale marks.
On the basis of the foregoing scheme, it is preferable that: the cross section of the roller is of an I-shaped structure.
It is further preferable on the basis of the foregoing scheme that: the outer wall of one side of the main body is provided with a power knob, and the power knob is connected into a control circuit of the centrifugal motor.
The invention has the beneficial effects that:
1. the air outlet area of the air outlet pipe can be conveniently and reliably adjusted by arranging the adjusting blades, the rollers, the adjusting grooves and other structures, and the adjusting blades are integrally distributed in a central shutter type structure, so that the adjustment of the air outlet area is symmetrical about the center of the outlet of the air outlet pipe, and the adjusting process is uniform and stable; through setting up spout and pulley, can promote the smoothness degree that adjusting blade adjusted, played spacing effect simultaneously, ensured the reliability that adjusting blade adjusted.
2. Through setting up the regulation seat, stir the rib isotructure, can be convenient for make to stir the rib through the rotation regulation seat and stir the gyro wheel, and then make the gyro wheel slide in the adjustment tank to make each adjusting blade angular position change based on the trend of adjustment tank, reach the effect of adjusting the port department air-out area of tuber pipe.
3. By arranging the annular ball seat, the connecting seat and other structures, the annular ball seat can reliably fix the adjusting seat by using the fixing piece through the acting force of the spring after the adjusting seat is rotationally adjusted, so that the reliability is improved; through setting up the traveller, can play the effect of direction to the displacement of connecting seat and annular ball seat, further promote the reliability.
4. The ball groove and the rolling ball are arranged, so that the smoothness of adjustment can be improved, and in addition, the rolling ball is spherical, and the guiding effect of the ball groove on the rolling ball is better than that of other shapes, so that the rolling ball can be easily clamped into the ball groove for positioning after being adjusted; through setting up the ring channel, can play spacing effect to the spin when adjusting, promoted the rotatory smoothness degree of regulation seat simultaneously.
5. By arranging the rotary pressing block, the rotary pressing block can be rotated on the handle before adjustment, one end of the rotary pressing block is in contact with the top surface of the connecting seat and presses the connecting seat downwards, the rolling ball is separated from the ball groove under the deformation matching of the spring, unlocking is realized, and then rotary adjustment is realized through the handle; the convenience of adjustment is promoted.
Drawings
Fig. 1 is a schematic structural view of an overall rotary regulating centrifugal fan according to the present invention;
fig. 2 is a schematic structural view of an outlet pipe port of a rotary adjustment type centrifugal ventilator provided by the invention;
fig. 3 is a schematic structural view of a cross-sectional view at an outlet pipe port of a rotary adjustment type centrifugal ventilator provided by the invention;
FIG. 4 is a schematic structural diagram of an annular groove and a spherical groove of a rotary adjusting type centrifugal fan according to the invention;
FIG. 5 is a schematic sectional view of a bottom surface of an adjusting seat of a rotary adjustable centrifugal fan according to the present invention;
fig. 6 is a schematic structural diagram of a regulating vane of a rotary regulating type centrifugal ventilator provided by the invention.
In the figure: the wind power generation device comprises a main body 1, a regulating blade 2, a connecting frame 3, a wind outlet pipe 4, a power knob 5, a regulating seat 6, a rotary press block 7, a connecting seat 8, scale marks 9, a blade seat 10, a handle 11, a chute 12, a rolling ball 13, a sliding column 14, a connecting ring 15, a spring 16, an annular ball seat 17, a ball groove 18, an annular groove 19, a regulating groove 20, a roller 21, a mounting shaft 22, a toggle rib 23, a blade groove 24, a pulley 25 and a support 26.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
A rotary adjusting type centrifugal ventilator, as shown in figures 1-6, comprises a main body 1, wherein an air outlet pipe 4 is arranged on one side of the main body 1, and a centrifugal motor is arranged inside the main body 1; an adjusting mechanism for adjusting the air outlet area is arranged at the port of the air outlet pipe 4, the adjusting mechanism comprises adjusting blades 2 and a blade seat 10 which are uniformly and circumferentially distributed, and the adjusting blades 2 are arranged on the inner wall of the blade seat 10 through blade grooves 24; the blade seat 10 is arranged on the outer walls of the two sides of the air outlet pipe 4 through the two connecting frames 3; the outer wall of one side of each adjusting blade 2 is provided with a sliding groove 12, the outer wall of the other side of each adjusting blade 2 is provided with a pulley 25 through a support 26, each pulley 25 is matched with the corresponding sliding groove 12, and each adjusting blade 2 is connected to the inner wall of the corresponding sliding groove 12 of the adjacent adjusting blade 2 in a sliding mode through the corresponding pulley 25; the outer walls of the bottoms of the adjusting blades 2 are all provided with idler wheels 21 through mounting shafts 22, the inner walls of the bottoms of the blade seats 10 are provided with adjusting grooves 20, and the idler wheels 21 are all connected to the inner walls of the adjusting grooves 20 in a sliding manner; the whole adjusting blades 2 are distributed in a central shutter type structure; the bottom of the blade seat 10 is provided with a toggle mechanism for controlling the displacement of the roller 21; the adjusting blades 2, the rollers 21, the adjusting grooves 20 and other structures are arranged, so that the air outlet area of the air outlet pipe 4 can be conveniently and reliably adjusted, and the adjusting blades 2 are integrally distributed in a central shutter type structure, so that the adjustment of the air outlet area is symmetrical about the center of the outlet of the air outlet pipe 4, and the adjusting process is uniform and stable; through setting up spout 12 and pulley 25, can promote the smoothness degree that adjusting blade 2 adjusted, play spacing effect simultaneously, ensure the reliability that adjusting blade 2 adjusted.
To facilitate adjustment; as shown in fig. 3 and 5, the toggle mechanism comprises an adjusting seat 6 and toggle ribs 23, the toggle ribs 23 are integrally and uniformly arranged on the outer wall of the top of the adjusting seat 6, and the toggle ribs 23 are matched with the rollers 21 in number and position; the outer wall of the inner ring of the adjusting seat 6 is connected to the inner wall of the circumference of the blade seat 10 in a sliding manner, the outer wall of the bottom of the adjusting seat 6 is integrally provided with a connecting ring 15, and the adjusting seat 6 is connected to the inner wall of the top end of the air outlet pipe 4 in a sliding manner through the connecting ring 15; a fixing mechanism for fixing the adjusting seat 6 is also arranged below the adjusting seat 6; adjust seat 6, stir rib 23 isotructure through the setting, can be convenient for adjust seat 6 through the rotation and make to stir rib 23 and stir gyro wheel 21, and then make gyro wheel 21 slide in adjustment tank 20 to make 2 angular position of each adjusting blade change based on the trend of adjustment tank 20, reach the effect of adjusting the port department air-out area of tuber pipe 4.
In order to facilitate fixation; as shown in fig. 3, the fixing mechanism includes a connecting seat 8 and an annular ball seat 17, the annular ball seat 17 is integrally arranged on the inner circumferential wall of the connecting seat 8, and a fixing member for fixing the adjusting seat 6 is arranged on the inner top wall of the annular ball seat 17; the outer wall of the bottom of the connecting seat 8 is welded with uniformly distributed springs 16, and the other ends of the springs 16 are welded on the outer wall of the top of the air outlet pipe 4; through setting up annular ball seat 17, connecting seat 8 isotructures, can adjust seat 6 and carry out the rotation regulation back, make annular ball seat 17 utilize the reliable fixed seat 6 of adjusting of mounting, promote the reliability through spring 16's effort.
To further improve reliability; as shown in fig. 3, the outer wall of the bottom of the connecting seat 8 is fixed with evenly distributed sliding columns 14 through screws, and the connecting seat 8 is connected to the inner wall of the top of the air outlet pipe 4 through the sliding columns 14 in a sliding manner; through setting up traveller 14, can play the effect of direction to the displacement of connecting seat 8 and annular ball seat 17, further promote the reliability.
In order to improve the smoothness of adjustment; as shown in fig. 3, the fixing member is embodied as uniform circumferentially distributed balls 13; the outer wall of the bottom of the adjusting seat 6 is provided with a ball groove 18 matched with the rolling ball 13; through setting up ball groove 18 and spin 13, can promote the fluency of adjusting, spin 13 is the ball-type in addition, and ball groove 18 is more superior to other shapes to spin 13's guide effect, so, spin 13 can be after adjusting, changes the realization and goes into ball groove 18 location.
To further promote fluency; as shown in fig. 4, the outer wall of the bottom of the adjusting seat 6 is provided with an annular groove 19, and the ball groove 18 is formed in the inner wall of the top of the annular groove 19; through setting up ring channel 19, can play spacing effect to spin 13 when adjusting, promoted the rotatory fluency of adjusting seat 6 simultaneously.
In order to improve the convenience of adjustment; as shown in fig. 2, the outer walls of both sides of the adjusting seat 6 are fixed with handles 11 through screws; the circumferential outer wall of the handle 11 is rotatably connected with a rotary pressing block 7; the friction between the rotating pressing block 7 and the handle 11 is enough to enable the rotating pressing block 7 to maintain the current position state; by arranging the rotary pressing block 7, the rotary pressing block 7 can be rotated on the handle 11 before adjustment, one end of the rotary pressing block 7 is in contact with the top surface of the connecting seat 8, the connecting seat 8 is pressed downwards, the rolling ball 13 is separated from the ball groove 18 under the deformation matching of the spring 16, unlocking is realized, and then rotation adjustment is realized through the handle 11; the convenience of adjustment is promoted.
To facilitate the amount of adjustment of the handle; as shown in fig. 2, the outer wall of the top of the connecting seat 8 is provided with scale marks 9; through setting up scale mark 9, be convenient for judge the air-out area through scale mark 9, do benefit to the regulating variable of the rotation of accuse adjusting seat 6.
In order to improve reliability; as shown in fig. 5, the roller 21 has an i-shaped cross section.
In order to improve the practicability; as shown in fig. 1, a power knob 5 is arranged on the outer wall of one side of the main body 1, and the power knob 5 is connected to a control circuit of the centrifugal motor.
When the centrifugal fan is used, a user can adjust the power of the centrifugal motor through the power knob 5 as required and adjust the air outlet area as required, specifically, the user rotates the handle 11 through the rotary press block 7, so that one end of the rotary press block 7 contacts the top surface of the connecting seat 8, the connecting seat 8 is pressed downwards, the rolling ball 13 is separated from the ball groove 18 under the deformation matching of the spring 16, the unlocking is realized, and then the adjusting seat 6 is controlled to rotate through the handle 11; the adjusting seat 6 rotates to enable the poking ribs 23 to poke the roller 21, so that the roller 21 slides in the adjusting groove 20, the angle position of each adjusting blade 2 is changed based on the trend of the adjusting groove 20, and the effect of adjusting the air outlet area at the port of the air outlet pipe 4 is achieved; in addition, through setting up spout 12 and pulley 25, when stirring rib 23 and stir gyro wheel 21, adjusting blade 2 can slide in adjacent adjusting blade 2's spout 12 through pulley 25, can promote the smoothness degree that adjusting blade 2 adjusted, has played spacing effect simultaneously, has ensured the reliability that adjusting blade 2 adjusted.
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 (6)
1. A rotary adjusting type centrifugal ventilator comprises a main body (1), and is characterized in that an air outlet pipe (4) is arranged on one side of the main body (1), and a centrifugal motor is arranged in the main body (1); an adjusting mechanism for adjusting the air outlet area is arranged at the port of the air outlet pipe (4), the adjusting mechanism comprises adjusting blades (2) and a blade seat (10) which are uniformly and circumferentially distributed, and the adjusting blades (2) are arranged on the inner wall of the blade seat (10) through blade grooves (24); the blade seat (10) is arranged on the outer walls of the two sides of the air outlet pipe (4) through the two connecting frames (3); the outer wall of one side of each adjusting blade (2) is provided with a sliding groove (12), the outer wall of the other side of each adjusting blade (2) is provided with a pulley (25) through a support (26), each pulley (25) is matched with the corresponding sliding groove (12), and each adjusting blade (2) is connected to the inner wall of the corresponding sliding groove (12) of the adjacent adjusting blade (2) in a sliding mode through the corresponding pulley (25); the bottom outer walls of the adjusting blades (2) are respectively provided with a roller (21) through a mounting shaft (22), the bottom inner wall of the blade seat (10) is provided with an adjusting groove (20), and the rollers (21) are respectively connected to the inner wall of the adjusting groove (20) in a sliding manner; the whole adjusting blades (2) are distributed in a central shutter type structure; the bottom of the blade seat (10) is provided with a toggle mechanism for controlling the displacement of the roller (21);
the poking mechanism comprises an adjusting seat (6) and poking ribs (23), the poking ribs (23) are integrally and uniformly arranged on the outer wall of the top of the adjusting seat (6), and the poking ribs (23) are matched with the rollers (21) in quantity and position; the outer wall of the inner ring of the adjusting seat (6) is connected to the inner wall of the circumference of the blade seat (10) in a sliding manner, a connecting ring (15) is integrally arranged on the outer wall of the bottom of the adjusting seat (6), and the adjusting seat (6) is connected to the inner wall of the top end of the air outlet pipe (4) in a sliding manner through the connecting ring (15); a fixing mechanism for fixing the adjusting seat (6) is also arranged below the adjusting seat (6);
the fixing mechanism comprises a connecting seat (8) and an annular ball seat (17), the annular ball seat (17) is integrally arranged on the circumferential inner wall of the connecting seat (8), and a fixing piece for fixing the adjusting seat (6) is arranged on the inner wall of the top of the annular ball seat (17); uniformly distributed springs (16) are welded on the outer wall of the bottom of the connecting seat (8), and the other ends of the springs (16) are welded on the outer wall of the top of the air outlet pipe (4);
the outer wall of the bottom of the connecting seat (8) is fixed with evenly distributed sliding columns (14) through screws, and the connecting seat (8) is connected to the inner wall of the top of the air outlet pipe (4) in a sliding mode through the sliding columns (14);
the fixing piece is specifically a rolling ball (13) which is uniformly and circumferentially distributed; the outer wall of the bottom of the adjusting seat (6) is provided with a ball groove (18) matched with the rolling ball (13).
2. A rotary regulating centrifugal fan according to claim 1, characterized in that the bottom outer wall of the regulating seat (6) is provided with an annular groove (19), and the ball groove (18) is provided on the top inner wall of the annular groove (19).
3. A rotary regulating centrifugal fan according to claim 2, wherein the adjusting seat (6) is fixed with a handle (11) on both outer side walls through screws; the circumferential outer wall of the handle (11) is rotatably connected with a rotary pressing block (7).
4. A rotary adjustable centrifugal fan according to claim 3, wherein the top outer wall of the connecting base (8) is provided with graduations (9).
5. A rotary adjustable centrifugal fan according to claim 4, wherein the rollers (21) are of I-shaped configuration in cross-section.
6. A rotary adjustable centrifugal fan according to claim 5, wherein the main body (1) is provided with a power knob (5) on one side of the outer wall, and the power knob (5) is connected to a control circuit of the centrifugal motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010822804.5A CN111779697B (en) | 2020-08-17 | 2020-08-17 | Rotation regulation formula centrifugal fan |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010822804.5A CN111779697B (en) | 2020-08-17 | 2020-08-17 | Rotation regulation formula centrifugal fan |
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| CN111779697A CN111779697A (en) | 2020-10-16 |
| CN111779697B true CN111779697B (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010822804.5A Active CN111779697B (en) | 2020-08-17 | 2020-08-17 | Rotation regulation formula centrifugal fan |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113915985B (en) * | 2021-10-22 | 2022-10-28 | 王志远 | Processing device for ceramic product process |
| CN117490166B (en) * | 2023-12-29 | 2024-03-22 | 南方环境有限公司 | A ventilation mechanism for mobile smoke and dust administering equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7819728B2 (en) * | 2005-03-10 | 2010-10-26 | Magna International Inc. | Shutter cup |
| CN107076153A (en) * | 2014-09-19 | 2017-08-18 | 阿特拉斯·科普柯空气动力股份有限公司 | Inlet valve for compressor |
| CN207049351U (en) * | 2017-07-20 | 2018-02-27 | 深圳市圣地保人防有限公司 | A kind of electric closed valve door |
| WO2019226155A2 (en) * | 2018-05-22 | 2019-11-28 | Kinetic Pressure Control, Ltd. | Iris valve type well annular pressure control device and method |
| CN211174675U (en) * | 2019-06-20 | 2020-08-04 | 佛山市粤宇风机设备有限公司 | Centrifugal fan with adjustable air outlet port |
-
2020
- 2020-08-17 CN CN202010822804.5A patent/CN111779697B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7819728B2 (en) * | 2005-03-10 | 2010-10-26 | Magna International Inc. | Shutter cup |
| CN107076153A (en) * | 2014-09-19 | 2017-08-18 | 阿特拉斯·科普柯空气动力股份有限公司 | Inlet valve for compressor |
| CN207049351U (en) * | 2017-07-20 | 2018-02-27 | 深圳市圣地保人防有限公司 | A kind of electric closed valve door |
| WO2019226155A2 (en) * | 2018-05-22 | 2019-11-28 | Kinetic Pressure Control, Ltd. | Iris valve type well annular pressure control device and method |
| CN211174675U (en) * | 2019-06-20 | 2020-08-04 | 佛山市粤宇风机设备有限公司 | Centrifugal fan with adjustable air outlet port |
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| CN111779697A (en) | 2020-10-16 |
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