CN111456968A - Axial-flow fan with adjustable blades - Google Patents
Axial-flow fan with adjustable blades Download PDFInfo
- Publication number
- CN111456968A CN111456968A CN202010214062.8A CN202010214062A CN111456968A CN 111456968 A CN111456968 A CN 111456968A CN 202010214062 A CN202010214062 A CN 202010214062A CN 111456968 A CN111456968 A CN 111456968A
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- China
- Prior art keywords
- blade
- ratchet
- ratchet wheel
- blades
- cover plate
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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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
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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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- 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 relates to an axial flow fan with adjustable blades, in particular to the technical field of the axial flow fan, and provides an axial flow fan which can directly adjust the blade angle to meet the use requirement, wherein the axial flow fan comprises a driving motor, an impeller, a protective cover and at least three adjusting devices for adjusting the blade angle, and blades are arranged on a hub through the adjusting devices; the adjusting device comprises a ratchet wheel and a mounting sleeve, and the mounting sleeve is fixedly connected to the upper end face of the ratchet wheel; the hub is provided with at least three grooves for placing the adjusting devices, the adjusting devices are movably connected in the grooves, and the bottom surfaces of the grooves are provided with pawls matched with the ratchet wheels; the bottom of blade is equipped with the inserted bar, and inserted bar and blade fixed connection, the inserted bar is pegged graft and is made the blade be connected with adjusting device on the installation sleeve pipe, and the rotation angle regulation of blade through the ratchet. The ratchet wheel rotates to drive the blades to rotate, the pawl fixes the ratchet wheel, and the angle of the blades is directly adjusted to achieve the effect of adjusting the air quantity and the air direction.
Description
Technical Field
The invention relates to the technical field of axial flow fans, in particular to an axial flow fan with adjustable blades.
Background
Axial flow fans are airflow in the same direction as the axis of the fan blades (i.e., the direction of the wind is parallel to the axis), and for example, fans such as electric fans and air conditioner external fans are axial flow running fans.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an existing axial flow fan, blades 2 of the existing axial flow fan are directly fixed on a hub 1, the blades have only one angle, the angle of the blades cannot be adjusted, and if air volume and wind direction at different angles are required, the blades can only be specially designed or equipped with blades at other angles to meet requirements.
The above prior art solutions have the following drawbacks: the angle of the blade can not be adjusted according to different air volume requirements of different environments, and the use requirement can not be met; the blades with different angles are prepared, and the production cost is increased.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the axial flow fan with the adjustable blades, which can directly adjust the blade angle so as to meet the requirements of different environments, different air volumes and different wind directions.
The above object of the present invention is achieved by the following technical solutions:
an axial flow fan with adjustable blades comprises a driving motor, an impeller and a protective cover, wherein the impeller consists of a hub and at least three blades, a bottom plate is arranged in the protective cover, the driving motor is arranged on the bottom plate, a rotating shaft of the driving motor is connected with the hub, the blades are uniformly inserted on the hub, the axial flow fan also comprises at least three adjusting devices for adjusting the angles of the blades, and the blades are arranged on the hub through the adjusting devices;
the adjusting device comprises a ratchet wheel and a mounting sleeve, and the mounting sleeve is fixedly connected to the upper end face of the ratchet wheel;
the hub is provided with at least three grooves for accommodating the adjusting devices, the adjusting devices are fixed in the grooves, and the bottom surfaces of the grooves are provided with pawls matched with the ratchet wheels;
the bottom of blade be equipped with the inserted bar, inserted bar and blade fixed connection, the inserted bar is pegged graft and is made blade and adjusting device be connected on the installation sleeve pipe, the blade passes through ratchet's rotation angle regulation.
By adopting the technical scheme, the blade is arranged on the mounting sleeve of the adjusting device, the adjusting device is forced to rotate to drive the ratchet wheel to rotate, so that the blade starts to rotate, and after the blade rotates to a proper angle, the ratchet wheel is fixed by the pawl, so that the blade can be fixedly maintained at the angle; the adjusting device is rotated again only by needing different air quantity and wind direction, and the angle of the blade is adjusted.
The present invention in a preferred example may be further configured to: the groove is internally provided with a connecting rod, the connecting rod consists of a polished rod and a threaded rod, the tail end of the polished rod is close to the groove, the threaded rod is connected with the top of the polished rod, the central part of the ratchet wheel is provided with a connecting hole, the connecting hole is communicated with the mounting sleeve, the ratchet wheel is sleeved on the polished rod through the connecting hole and enables the top of the threaded rod to extend into the mounting sleeve, the ratchet wheel rotates around the polished rod, and the end part of the threaded rod is screwed with a nut to limit the ratchet wheel.
By adopting the technical scheme, the ratchet wheel is sleeved on the polished rod through the connecting hole, the ratchet wheel rotates around the polished rod, the adjusting device is movably connected in the groove, the nut is screwed at the top of the threaded rod in the mounting sleeve, the ratchet wheel is limited, and the ratchet wheel is prevented from being separated from the groove in the rotating process of the wheel hub.
The present invention in a preferred example may be further configured to: the adjusting device comprises two rotating blocks which apply force to the ratchet wheel and enable the ratchet wheel to rotate, and the two rotating blocks are arranged on the upper end face of the ratchet wheel and are respectively positioned on two sides of the mounting sleeve.
Through adopting above-mentioned technical scheme, twist and move two turning blocks and just can make adjusting device rotate, rotate adjusting device like this and just become more convenient, high-efficient.
The present invention in a preferred example may be further configured to: the axial flow fan further comprises a concave cover plate, the cover plate is located in the groove, two ends of the same symmetrical axis on the cover plate are respectively provided with an inserting hole for the rotating block to pass through, the center of the cover plate is provided with a through hole for the installation sleeve to pass through, a cover of the cover plate is buckled on the adjusting device, the through hole is located between the two inserting holes, and a side plate of the cover plate is located above the pawl.
Through adopting above-mentioned technical scheme, the apron passes through the through-hole suit on adjusting device's installation sleeve pipe, and two turning blocks pass two spliced eyes and make the apron lid establish in the recess, can play the effect of protection to pawl and ratchet, and the curb plate of apron is located the pawl top, makes the apron can not hinder pawl work when rotating.
The present invention in a preferred example may be further configured to: the inserting rod is provided with a first connecting hole, the mounting sleeve is provided with two second connecting holes matched with the first connecting hole for use, and the inserting rod is fixedly connected with the mounting sleeve through a bolt to be inserted into the first connecting hole and the second connecting hole.
By adopting the technical scheme, the bolt penetrates through the first connecting hole and the second connecting hole, and the nut is additionally arranged, so that the adjusting device is fixedly connected with the blade.
The present invention in a preferred example may be further configured to: the cover plate is covered in the groove, and the first connecting hole and the second connecting hole are located above the cover plate.
Through adopting above-mentioned technical scheme, the apron top that is located of first connecting hole and second connecting hole, the bolt of fixed first connecting hole and second connecting hole plays spacing effect to the apron, prevents that the blade from rotating the in-process, and the apron is deviate from the recess.
The present invention in a preferred example may be further configured to: the ratchet wheel rotates to enable the moving blade of the adjusting device to rotate 360 degrees.
Through adopting above-mentioned technical scheme, the ratchet can rotate 360, makes the angle of blade also can adjust in 360, satisfies the place of difference and uses.
The present invention in a preferred example may be further configured to: a dial which is matched with the ratchet wheel for use and has a range of 0-360 degrees is arranged at the notch of the groove.
Through adopting above-mentioned technical scheme, when rotating the ratchet, can carry out the regulation of angle according to the scale of calibrated scale, make the angle that the blade was adjusted more accurate.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the adjusting device is movably connected in the groove, the ratchet wheel rotates to drive the blade to rotate, and the pawl fixes the ratchet wheel, so that the blade is fixed after the angle is adjusted, the angle of the blade can be directly adjusted to achieve the effect of adjusting the air quantity and the air direction, and the adjusting device is simpler and more convenient;
2. the cover plate can protect the ratchet wheel and the pawl and reinforce the adjusting device;
3. according to the invention, the two rotating blocks are twisted to apply force to the ratchet wheel, so that the ratchet wheel rotates to drive the blade to rotate, and the rotating blocks are arranged to enable the operation to be more flexible.
Drawings
Fig. 1 is a schematic structural view of a conventional axial flow fan.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic view of the structure of the impeller, cover plate and adjusting device of the present invention.
Fig. 4 is a schematic view of the construction of the hub, cover plate and adjustment device of the present invention.
Fig. 5 is a schematic view of the construction of a blade according to the invention.
Fig. 6 is a schematic view of the structure of the adjusting device of the present invention.
Fig. 7 is a schematic structural view of the hub recess of the present invention.
Fig. 8 is a schematic view of the construction of the hub and adjustment device of the present invention.
Fig. 9 is a schematic structural diagram of the cover plate and the adjusting device of the present invention.
Fig. 10 is a schematic view of the structure of the cover plate of fig. 9.
In the figure, 1, a hub, 11, a groove, 12, a pawl, 13, a connecting rod, 2, a blade, 3, an adjusting device, 31, a ratchet wheel, 32, a mounting sleeve, 33, a rotating block, 4, a plug rod, 5, a cover plate, 51, a plug hole, 52 and a through hole are arranged.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 2 and 3, the axial flow fan with adjustable blades disclosed by the invention comprises a driving motor, an impeller and a protective cover, wherein the impeller comprises a hub 1 and four blades 2, a bottom plate is arranged in the protective cover, the driving motor is arranged on the bottom plate, a rotating shaft of the driving motor is connected with the hub 1, and the blades 2 are uniformly inserted on the hub 1 through an adjusting device 3.
Referring to fig. 3 and 4, the axial flow fan includes four adjusting devices 3, four grooves 11 are opened on a hub 1, the adjusting devices 3 are movably connected in the grooves 11, referring to fig. 5, an inserting rod 4 is provided at the bottom of a blade 2, the inserting rod 4 is fixedly connected with the blade, the inserting rod 4 is inserted on a mounting sleeve 32 to connect the blade 2 with the blade 2, the blade 2 is connected on the hub 1 through the adjusting devices 3, a cover plate 5 is provided in the groove 11, the mounting sleeve 32 of the adjusting device 3 passes through a through hole of the cover plate 5, two rotating blocks pass through the two inserting holes to enable the cover plate 5 to protect a ratchet 31 and a pawl 12, a first connecting hole is opened on the inserting rod 4 at the bottom of the blade 2, the mounting sleeve 32 is provided with two second connecting holes matched with the first connecting hole, the cover plate 5 is completely covered in the grooves 11, and then is inserted into the first connecting hole and, meanwhile, the bolt has a limiting effect on the cover plate 5, and the cover plate 5 is prevented from being separated from the groove 11.
Referring to fig. 6, the adjusting device 3 includes a ratchet wheel 31 and a mounting sleeve 32, the mounting sleeve 32 is fixedly connected to an upper end surface of the ratchet wheel 31, two rotating blocks 33 for applying force to the ratchet wheel 31 and rotating the ratchet wheel are disposed on the ratchet wheel, and the two rotating blocks 33 are respectively disposed on two sides of the mounting sleeve 32.
Referring to fig. 7 and 8, the adjusting device 3 is movably connected in the groove 11, the hub 1 is provided with four grooves 11, the bottom surface of the groove 11 is provided with a pawl 12 matched with the ratchet 31, the groove 11 is also provided with a connecting rod 13, the connecting rod 13 is composed of a polished rod and a threaded rod, the tail end of the polished rod is close to the groove 11, the threaded rod is connected with the top of the polished rod, the central part of the ratchet 31 is provided with a connecting hole, the connecting hole is communicated with the mounting sleeve 32, the ratchet 31 is sleeved on the polished rod, the top of the threaded rod extends into the mounting sleeve 32, the ratchet wheel 31 can rotate around the polished rod, the nut screwed at the end part of the threaded rod limits the ratchet wheel 31, the pawl 12 fixes the ratchet wheel 31 to prevent the ratchet wheel 31 from rotating, thereby fixing the blade 2 angularly adjusted by the rotation of the ratchet 31, the rotation of the ratchet 31 causing the adjustment device 3 to rotate the blade 2 through 360 °.
Referring to fig. 9 and 10, the cover plate 5 is in a concave shape, the cover plate 5 is buckled in the groove 11 in an inverted manner, a limiting groove 52 with a downward opening is formed in the side surface of the cover plate 5, the limiting groove 52 is buckled with the pawl 12 to limit the pawl, the cover plate 5 is connected with the adjusting device 3 through the through hole 52 and the two inserting holes 51, and meanwhile the cover plate 5 plays a role in reinforcing the ratchet wheel 31 of the adjusting device 3.
The implementation principle of the cover plate and the adjusting device is as follows: during installation, the cover plate 5 is sleeved on the installation sleeve 32 and the two rotating blocks 33 of the adjusting device 3 through the through hole 52 and the two inserting holes 51, the limiting groove 52 is clamped on the pawl 12, the cover plate 5 completely covers the groove 11, the inserting rod 4 at the bottom of the blade 2 is inserted in the installation sleeve 32, a bolt penetrates through the first connecting hole and the second connecting hole, a nut is screwed, the blade 2 is fixedly connected with the installation sleeve 32, and the bolt can prevent the cover plate 5 from being separated from the groove 11; during operation, according to actual conditions, the two rotating blocks 33 are screwed to rotate the ratchet wheel 31, the blade 2 rotates to adjust the angle, and the rotation of the two rotating blocks 33 drives the cover plate 5 to rotate along with the rotation, so that the purpose of protecting the ratchet wheel 31 and the pawl 12 is achieved.
The working process of the invention is as follows: 1. mounting, namely sleeving the adjusting device on the connecting rod 13 through a ratchet wheel, rotating the ratchet wheel around a polished rod, positioning a threaded rod in the mounting sleeve, screwing a nut at the top of the threaded rod, sleeving a cover plate on the mounting sleeve 32 and two rotating blocks 33 of the adjusting device 3 through a through hole 52 and two inserting holes 51, inserting the inserting rod 4 at the bottom of the blade 2 into the mounting sleeve 32, inserting bolts into the first connecting hole and the second connecting hole, and screwing the nuts on the bolts to fixedly connect the blade 2 and the adjusting device 3; 2. and when the position of the blade 2 is a proper angle, the ratchet wheel 31 stops rotating, the pawl 12 fixes the ratchet wheel 31, so that the blade 2 can be fixed, and the angle adjustment of the blade 2 can be completed.
When blade 2 needs other angles, only need anticlockwise rotation turning block 33 once more, make ratchet 31 rotatory, drive blade 2 rotatory, make blade 2 adjust to suitable angle, need not prepare the blade of different angles in addition again, reduced manufacturing cost, make axial-flow fan satisfy different user demands.
The insertion rod 4 and the mounting sleeve 32 can be fixedly connected by inserting the pin into the first connecting hole and the second connecting hole.
A graduated scale with the range of 0-360 degrees can be arranged at the notch of the groove 11, scales on the graduated scale correspond to the gear teeth of the ratchet wheel 31, and the ratchet wheel 31 can correspond to one scale when not rotating one gear tooth, so that the accuracy of the adjustment of the angle of the blade 2 can be ensured by rotating the ratchet wheel 31.
The length of the insertion hole 51 is larger than that of the rotating block 33, and the length of the insertion hole 51 is changed along with the length of the rotating block 33 so as to ensure that the rotating block 33 passes through the insertion hole 51.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The utility model provides an axial-flow fan with adjustable blade, includes driving motor, impeller and safety cover, the impeller by wheel hub (1) and three at least blades (2), the safety cover in be equipped with the bottom plate, driving motor installs on the bottom plate, driving motor's pivot is connected with wheel hub (1), blade (2) peg graft on wheel hub (1) uniformly, its characterized in that: the axial flow fan also comprises at least three adjusting devices (3) for adjusting the angles of the blades (2), and the blades (2) are arranged on the hub (1) through the adjusting devices (3);
the adjusting device (3) comprises a ratchet wheel (31) and a mounting sleeve (32), and the mounting sleeve (32) is fixedly connected to the upper end face of the ratchet wheel (31);
the wheel hub (1) is provided with at least three grooves (11) for placing the adjusting devices (3), the adjusting devices (3) are movably connected in the grooves (11), and the bottom surfaces of the grooves (11) are provided with pawls (12) matched with the ratchet wheels (31);
the bottom of blade (2) be equipped with grafting pole (4), grafting pole (4) and blade (2) fixed connection, grafting pole (4) are pegged graft and are made blade (2) be connected with adjusting device (3) on installation sleeve pipe (32), rotation angle regulation through ratchet (31) is passed through to blade (2).
2. The axial fan with adjustable blades of claim 1, wherein: recess (11) in be provided with connecting rod (13), connecting rod (13) constitute by polished rod and threaded rod, the end of polished rod be close to recess (11), the threaded rod be connected with the top of polished rod, the central part of ratchet (31) open and to have a connecting hole, connecting hole and installation sleeve pipe (32) communicate with each other, ratchet (31) through the connecting hole suit on the polished rod and make the top of threaded rod extend to in installation sleeve pipe (32), ratchet (31) rotate around the polished rod, the tip of threaded rod is screwed the nut and is spacing ratchet (31).
3. The axial fan with adjustable blades of claim 1, wherein: the adjusting device (3) comprises two rotating blocks (33) which apply force to the ratchet wheel (31) and enable the ratchet wheel to rotate, and the two rotating blocks (33) are arranged on the upper end face of the ratchet wheel (31) and are respectively located on two sides of the mounting sleeve (32).
4. The axial fan with adjustable blades of claim 3, wherein: the axial flow fan further comprises a concave cover plate (5), the cover plate (5) is located in the groove (11), two ends of the same symmetrical axis on the cover plate (5) are respectively provided with an inserting hole (51) for the rotating block (33) to penetrate through, a through hole (52) for the installation sleeve (32) to penetrate through is formed in the center of the cover plate (5), the cover of the cover plate (5) is buckled on the adjusting device (3), the through hole (52) is located between the two inserting holes (51), and a side plate of the cover plate (5) is located above the pawl (12).
5. The axial fan with adjustable blades of claim 4, wherein: peg graft pole (4) on open and to have first connecting hole, installation sleeve pipe (32) open and to have two second connecting holes with first connecting hole cooperation use, peg graft pole (4) and the fixed connection of installation sleeve pipe (32) are through bolt insertion first connecting hole and second connecting hole.
6. The axial fan with adjustable blades of claim 5, wherein: the cover plate (5) is covered in the groove (11), and the first connecting hole and the second connecting hole are located above the cover plate (5).
7. The axial fan with adjustable blades of claim 1, wherein: the ratchet wheel (31) rotates to enable the adjusting device (3) to drive the blade (2) to rotate 360 degrees.
8. The axial fan with adjustable blades of claim 1, wherein: a dial which is in the range of 0-360 degrees and corresponds to the gear teeth of the ratchet wheel (31) is arranged at the notch of the groove (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010214062.8A CN111456968B (en) | 2020-03-24 | 2020-03-24 | Axial-flow fan with adjustable blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010214062.8A CN111456968B (en) | 2020-03-24 | 2020-03-24 | Axial-flow fan with adjustable blades |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111456968A true CN111456968A (en) | 2020-07-28 |
| CN111456968B CN111456968B (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010214062.8A Active CN111456968B (en) | 2020-03-24 | 2020-03-24 | Axial-flow fan with adjustable blades |
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| Country | Link |
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| CN (1) | CN111456968B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648231A (en) * | 2020-12-23 | 2021-04-13 | 浙江龙信风机有限公司 | Fan blade structure of centrifugal axial flow fan |
| CN114033702A (en) * | 2021-11-29 | 2022-02-11 | 高邮环流泵业有限公司 | Axial-flow pump with blade angle adjusting device |
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| KR20110131466A (en) * | 2010-05-31 | 2011-12-07 | 서홍범 | Axial fan which is easy to adjustable angle |
| CN104847696A (en) * | 2015-05-04 | 2015-08-19 | 浙江理工大学 | Mechanical device for immediately adjusting installing angle of impeller |
| CN206017260U (en) * | 2016-08-31 | 2017-03-15 | 株洲联诚集团有限责任公司 | A kind of axial flow fan vane wheel of adjustable blade burner |
| CN206175310U (en) * | 2016-11-18 | 2017-05-17 | 苏州康喜医疗净化设备有限公司 | Air purifier fan filters formula wind wheel |
| CN207634375U (en) * | 2017-12-21 | 2018-07-20 | 浙江科力风机有限公司 | A kind of adjustable blade burner impeller |
| CN209925240U (en) * | 2019-04-18 | 2020-01-10 | 臻友重工(江苏)有限公司 | Axial flow fan with independently adjusted blades |
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2020
- 2020-03-24 CN CN202010214062.8A patent/CN111456968B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110131466A (en) * | 2010-05-31 | 2011-12-07 | 서홍범 | Axial fan which is easy to adjustable angle |
| CN104847696A (en) * | 2015-05-04 | 2015-08-19 | 浙江理工大学 | Mechanical device for immediately adjusting installing angle of impeller |
| CN206017260U (en) * | 2016-08-31 | 2017-03-15 | 株洲联诚集团有限责任公司 | A kind of axial flow fan vane wheel of adjustable blade burner |
| CN206175310U (en) * | 2016-11-18 | 2017-05-17 | 苏州康喜医疗净化设备有限公司 | Air purifier fan filters formula wind wheel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648231A (en) * | 2020-12-23 | 2021-04-13 | 浙江龙信风机有限公司 | Fan blade structure of centrifugal axial flow fan |
| CN112648231B (en) * | 2020-12-23 | 2022-07-05 | 浙江龙信风机有限公司 | Fan blade structure of centrifugal axial flow fan |
| CN114033702A (en) * | 2021-11-29 | 2022-02-11 | 高邮环流泵业有限公司 | Axial-flow pump with blade angle adjusting device |
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| Publication number | Publication date |
|---|---|
| CN111456968B (en) | 2021-10-15 |
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