CN219570410U - Backward centrifugal wind wheel - Google Patents
Backward centrifugal wind wheel Download PDFInfo
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- CN219570410U CN219570410U CN202320479962.4U CN202320479962U CN219570410U CN 219570410 U CN219570410 U CN 219570410U CN 202320479962 U CN202320479962 U CN 202320479962U CN 219570410 U CN219570410 U CN 219570410U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a backward centrifugal wind wheel, which relates to the technical field of wind wheels and comprises a wind wheel front disc, a wind wheel rear disc and a plurality of blades, wherein the blades are uniformly and backward arranged between the wind wheel front disc and the wind wheel rear disc around a rotation axis, one side of each blade close to the rotation axis is an air suction surface, one side of each blade far away from the rotation axis is a compressed air surface, channels formed between the air suction surfaces of the blades and the compressed air surfaces of adjacent blades and the wind wheel front disc and the wind wheel rear disc are air channels, the wall thickness of each blade is uniform, a first arc-shaped curved surface protruding towards the inside of the air channel is arranged on the air suction surface of an air inlet, a second arc-shaped curved surface protruding towards the outside of the air channel is arranged on the air suction surface of an air outlet, and the first arc-shaped curved surface and the second arc-shaped curved surface are connected through smooth transition curved surfaces, so that the wind-resistant centrifugal wind wheel has the advantages of small wind resistance, high efficiency and low noise.
Description
Technical Field
The utility model relates to the technical field of wind wheels, in particular to a backward centrifugal wind wheel.
Background
The backward centrifugal wind wheel is mainly applied to ventilation equipment such as an air purifier, a fresh air system, a fan filtering unit and the like, the equipment needs to work for a long time, the energy saving requirement on the equipment is high, the backward centrifugal wind wheel of the related technology is designed by a plurality of blades in a bevel edge mode, the structural design of the blades and the wind wheel is high in wind resistance and high in power consumption, and the energy saving requirement cannot be met.
Aiming at the related technology, the inventor considers that the blade of the related technology has the defects of large wind resistance and low operation efficiency.
Disclosure of Invention
In order to solve the problems of large wind resistance and low efficiency of the backward centrifugal wind wheel, the utility model provides the backward centrifugal wind wheel, which adopts the following technical scheme:
the utility model provides a backward centrifugal wind wheel, includes wind wheel front disc, wind wheel rear disc and a plurality of blade, the wind wheel front disc with evenly set up a plurality of backward around the axis of rotation between the wind wheel rear disc the blade, one side that the blade is close to the axis of rotation is the induced draft face, and one side that keeps away from the axis of rotation is the compressed air face, the induced draft face of blade and the compressed air face of adjacent blade with the passageway that forms between the wind wheel front disc with the wind wheel rear disc is the wind channel, the blade wall thickness is even, have at the air intake induced draft face to the inside protruding first arc curved surface in wind channel, have at the air outlet induced draft face to the outside protruding second arc curved surface in wind channel, first arc curved surface with second arc curved surface is connected through smooth transition's curved surface.
Through adopting above-mentioned technical scheme, the face that induced drafts of air intake department has the first arc curved surface that protrudes to the air intake inside, the face that induced drafts at the air outlet has the second arc curved surface that protrudes to the wind channel outside, make air intake and air outlet volume grow fast, it is convenient for induced draft to have to utilize the air intake to form the negative pressure, the blade wall thickness is even, like this, the face that presses air intake department has the first arc curved surface that protrudes to the wind channel outside, the face that presses air outlet face has the second arc curved surface that protrudes to the wind channel inside, first arc curved surface is connected through smooth transition's curved surface with the second arc curved surface, the second arc curved surface is favorable to the wind wheel to throw out wind from the air outlet under the effect of centrifugal force, simultaneously, reduce the resistance of wind to the second arc curved surface, the efficiency of wind wheel has been improved.
Optionally, the smooth transition curved surface is a spiral curved surface.
By adopting the technical scheme, the smooth transition curved surface is a spiral curved surface, the impeller is favorable for forming wind pressure on wind by the blades in the rotating process, sucking and exhausting wind from the air channel, and the working efficiency of the impeller is improved.
Optionally, the blades are made of steel plates, and the steel plates are respectively and fixedly connected with the front disk of the wind wheel and the rear disk of the wind wheel in a sealing way.
Through adopting above-mentioned technical scheme, the material of blade is the steel sheet, is convenient for process manufacturing blade curved surface shape, and the steel sheet respectively with wind wheel front disc and wind wheel rear disc sealing fixed connection, the wind channel between each blade is not because of the air leakage influences each other, has reduced noise and the resistance that produces because of the air leakage in the operation, simultaneously, is favorable to improving the output efficiency of wind wheel.
Optionally, the blade is provided with at least one reinforcing groove integrally formed by stamping along the direction of the air duct.
Through adopting above-mentioned technical scheme, along wind channel direction punching press strengthening groove on the blade, improved the bulk strength of blade, reduced vibration and the noise that produces because of warping in the blade operation process, simultaneously, be favorable to improving the output of wind wheel.
Optionally, the reinforcing grooves on the blade are two reinforcing grooves which are arranged at intervals up and down.
Through adopting above-mentioned technical scheme, the enhancement groove on the blade is two, has strengthened the blade at the length of blade and direction of height, has improved the bulk strength of blade, has reduced vibration and the noise that produces because of warping in the blade operation process, simultaneously, is favorable to improving the output of wind wheel.
Optionally, one side of the wind wheel rear disc facing the direction of the blade is a conical surface.
By adopting the technical scheme, one side of the wind wheel rear disc, which faces the blades, is a conical surface, so that the inlet to the outlet of the air duct is quickly enlarged, the air inlet is facilitated to form negative pressure, and the air inlet efficiency is improved.
Alternatively, the number of blades is 5.
Through adopting above-mentioned technical scheme, blade quantity is 5, makes the wind channel set up more reasonable, is favorable to wind channel air inlet and air-out, reduces the windage of blade, is favorable to improving the output of wind wheel.
Optionally, the outer diameter B of the wind wheel is 456 mm+/-3 mm, the diameter E of the wind wheel air inlet is 343 mm+/-3 mm, the inner diameter F of the blade inlet is 192 mm+/-3 mm, the thickness of the blade is 1.5 mm+/-0.5 mm, the height G of the air outlet is 122 mm+/-3 mm, the total height H of the wind wheel is 181.5 mm+/-3 mm, and the cone angle J of the wind wheel rear disc is 122+/-0.2 degrees.
By adopting the technical scheme, the actual efficiency of the wind wheel is improved to 68% and the noise is reduced to 70.8dBA through the standard wind tunnel test by the given relevant parameter sizes of the wind wheel and the wind channel.
In summary, the present utility model includes at least one of the following beneficial technical effects:
1. the induced draft face of air intake department has the first arc curved surface to the inside outstanding of air intake, have the second arc curved surface to the outside outstanding of wind channel at the air outlet induced draft face, make air intake and air outlet volume grow fast, it is convenient for induced draft to have the negative pressure that utilizes the air intake to form, the blade wall thickness is even, like this, the leeward face of air intake department has the first arc curved surface to the outside outstanding of wind channel, the leeward face of air outlet has the second arc curved surface to the inside outstanding of wind channel, first arc curved surface is connected through smooth transition's curved surface with the second arc curved surface, the second arc curved surface is favorable to the wind wheel to throw out from the air outlet under the effect of centrifugal force, simultaneously, reduce the resistance of wind to the second arc curved surface, the efficiency of wind wheel has been improved.
2. The blade material is the steel sheet, is convenient for process manufacturing to blade curved surface shape, and the steel sheet respectively with wind wheel front disc and wind wheel rear disc sealing fixed connection, the wind channel between each blade is not because of the air leakage influences each other, has reduced noise and the vibration that produces because of the air leakage in the operation process, simultaneously, is favorable to improving the output efficiency of wind wheel.
3. The reinforced grooves are punched on the blades along the direction of the air duct, so that the overall strength of the blades is improved, vibration and noise generated by deformation in the running process of the blades are reduced, and meanwhile, the output efficiency of the wind wheel is improved.
4. The number of the blades is 5, so that the air duct is more reasonable in arrangement, air inlet and air outlet of the air duct are facilitated, the wind resistance of the blades is reduced, and the output efficiency of the wind wheel is improved.
5. The actual efficiency of the wind wheel is improved to 68% and the noise is reduced to 70.8dBA by the standard wind tunnel test of the related parameter sizes of the wind wheel and the wind channel.
Drawings
Fig. 1 is a schematic structural view of a backward centrifugal wind wheel of the present utility model.
Fig. 2 is a schematic view of the structure with the front disk of the wind wheel removed to show the shape and position of the blades.
Fig. 3 is a top view of fig. 1.
Fig. 4 is a cross-sectional view taken along line A-A in fig. 3.
In the figure:
1. a wind wheel front disc; 2. a wind wheel rear disc; 21. conical surface; 3. a blade; 31. an air suction surface; 311. a first curved surface; 312. a second curved surface; 313. a smooth transition curved surface; 32. a compressed air surface; 33. a reinforcing groove; 4. an air duct; 41. an air inlet; 42. an air outlet; 5. the outer diameter B of the wind wheel; 6. the outer diameter C of the front disc of the wind wheel; 7. the outer diameter D of the wind wheel rear disc; 8. the diameter E of the wind wheel air inlet; 9. blade inlet inner diameter F; 10. the air outlet height G; 11. the total height H of the wind wheel; 12. the cone angle J of the wind wheel rear disc.
Detailed Description
The utility model is described in further detail below in connection with fig. 1 to 4.
The utility model discloses a backward centrifugal wind wheel, referring to figures 1 and 2, comprising a wind wheel front disc 1, a wind wheel rear disc 2 and a plurality of blades 3, wherein in the embodiment, five wind wheel blades 3 can be four, six or seven, in other embodiments, five blades 3 are uniformly and backward arranged around a rotation axis between the wind wheel front disc 1 and the wind wheel rear disc 2, one side of the blade 3 close to the rotation axis is an air suction surface 31, one side far away from the rotation axis is a compressed air surface 32, channels formed between the air suction surfaces 31 of the blades 3 and the compressed air surfaces 32 of the adjacent blades 3 and the wind wheel front disc 1 and the wind wheel rear disc 2 are air channels 4, the wall thickness of each blade 3 is uniform, the air suction surface 31 of an air inlet 41 of each air channel is provided with a first arc-shaped curved surface 311 protruding into the air channels 4, the air suction surface 31 of an air outlet 42 of each air channel is provided with a second arc-shaped curved surface 312 protruding out of the air channels 4, the first arc curved surface 311 is connected with the second arc curved surface 312 through the curved surface of smooth transition, make the air intake 41 and the air outlet 42 volume of wind channel 4 grow fast, it is convenient for induced draft to have to utilize air intake 41 to form negative pressure, the wall thickness of blade 3 is even, like this, the compressed air face 32 of wind channel 4 air intake 41 department has the first arc curved surface 311 to the outside outstanding of wind channel 4, the second arc curved surface 312 to the inside outstanding second arc curved surface 312 of wind channel 4 is had at wind channel 4 air outlet 42 compressed air face 32, first arc curved surface 311 and second arc curved surface 312 are connected through the curved surface of smooth transition, second arc curved surface 312 is favorable to the wind wheel to throw away wind from air outlet 42 under the effect of centrifugal force, simultaneously, reduce the resistance of wind to second arc curved surface 312, the efficiency of wind wheel has been improved.
Referring to fig. 2, the smooth transition curved surface 313 is a spiral curved surface, so that the impeller is beneficial to wind pressure of the blades 3 during rotation, suction and discharge of wind from the air duct 4, wind resistance is reduced, and working efficiency of the impeller is improved.
Referring to fig. 1, the material of the blades 3 is steel plate, the steel plate is respectively and fixedly connected with the front disk 1 of the wind wheel and the rear disk 2 of the wind wheel, the material of the blades 3 is steel plate, the curved surface shape of the blades 3 is convenient to process and manufacture, the steel plate is respectively and fixedly connected with the front disk 1 of the wind wheel and the rear disk 2 of the wind wheel in a sealing manner, in other embodiments, the welded manner can be adopted, and sealing measures are implemented while the fixed connection is adopted, so that the air channels 4 between the blades 3 are not mutually influenced due to air leakage, the noise and the resistance generated by the air leakage in the operation process are reduced, and meanwhile, the output efficiency of the wind wheel is improved.
Referring to fig. 2, at least one reinforcing groove 33 formed by stamping is provided on the blade 3 along the direction of the air duct 4, in this embodiment, two reinforcing grooves 33 formed by stamping are provided, in other embodiments, one reinforcing groove or three reinforcing grooves may be provided, and by providing the reinforcing groove 33, the overall strength of the blade 3 in the length and height directions is improved, vibration and noise generated by deformation during the operation of the blade 3 are reduced, and meanwhile, the output efficiency of the wind wheel is improved.
Referring to fig. 4, one side of the wind wheel rear disc 2 facing the direction of the blade 3 is a conical surface 21, so that the inlet to the outlet of the air duct 4 is rapidly enlarged, negative pressure is formed at the air inlet 41, and the air inlet efficiency is improved.
Referring to fig. 3 and 4, the wind wheel outer diameter B5 is 456mm±3mm, the wind wheel front disc outer diameter C6 is 456mm±3mm, the wind wheel rear disc outer diameter D7 is 456mm±3mm, the wind wheel air inlet diameter E8 is 343mm±3mm, the blade inlet inner diameter F9 is 192±3mm, the air outlet height G10 is 122±3mm, the wind wheel total height H11 is 181.5mm±3mm, the wind wheel rear disc cone angle J12 is 122 ° ±0.2°, the blade thickness is 1.5mm±0.5mm, and according to the given wind wheel related parameter size, the wind wheel static pressure efficiency table and the wind wheel noise test table of table 1 and table 2 are obtained through standard wind tunnel test.
Table 1 static pressure efficiency table for wind wheel
Table 2 wind wheel noise test meter
From the above description, it can be seen that the actual efficiency of the wind wheel is improved to 68%, the noise is reduced to 70.8dBA, the working efficiency of the wind wheel is improved, and the running noise of the wind wheel is reduced.
The foregoing are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in order, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (8)
1. The utility model provides a backward centrifugal wind wheel, includes wind wheel front disc (1), wind wheel rear disc (2) and a plurality of blade (3), wind wheel front disc (1) with evenly backward set up a plurality of around rotation axis between wind wheel rear disc (2) blade (3), one side that blade (3) are close to rotation axis is induced drafting face (31), and one side that keeps away from rotation axis is air pressure face (32), air suction face (31) of blade (3) and air pressure face (32) of adjacent blade (3) with wind wheel front disc (1) with the passageway that forms between wind wheel rear disc (2) is wind channel (4), its characterized in that: the air suction surface (31) of the air inlet (41) of the air duct (4) is provided with a first arc-shaped curved surface (311) protruding towards the inside of the air duct (4), the air suction surface (31) of the air outlet (42) of the air duct (4) is provided with a second arc-shaped curved surface (312) protruding towards the outside of the air duct (4), and the first arc-shaped curved surface (311) and the second arc-shaped curved surface (312) are connected through a smooth transition curved surface (313).
2. A backward centrifugal wind wheel according to claim 1, wherein: the smooth transition surface (313) is a spiral surface.
3. A backward centrifugal wind wheel according to claim 1, wherein: the blades (3) are made of steel plates, and the steel plates are respectively and fixedly connected with the front wind wheel disc (1) and the rear wind wheel disc (2) in a sealing mode.
4. A backward centrifugal wind wheel according to claim 3, wherein: at least one reinforcing groove (33) which is integrally formed by stamping is formed in the blade (3) along the direction of the air duct (4).
5. A backward centrifugal wind wheel according to claim 4, wherein: the reinforcing grooves (33) on the blade (3) are two reinforcing grooves (33) which are arranged at intervals up and down.
6. A backward centrifugal wind wheel according to claim 1, wherein: one side of the wind wheel rear disc (2) facing the direction of the blade (3) is a conical surface (21).
7. A backward centrifugal wind wheel according to any one of claims 1-6, wherein: the number of the blades (3) is 5.
8. A backward centrifugal wind wheel according to claim 7, wherein: the wind wheel external diameter B (5) is 456 mm+/-3 mm, the wind wheel air inlet diameter E (8) is 343 mm+/-3 mm, the blade inlet internal diameter F (9) is 192 mm+/-3 mm, the thickness of the blade (3) is 1.5 mm+/-0.5 mm, the air outlet height G (10) is 122 mm+/-3 mm, the wind wheel total height H (11) is 181.5 mm+/-3 mm, and the wind wheel rear disc cone angle J (12) is 122 DEG+/-0.2 deg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320479962.4U CN219570410U (en) | 2023-03-07 | 2023-03-07 | Backward centrifugal wind wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320479962.4U CN219570410U (en) | 2023-03-07 | 2023-03-07 | Backward centrifugal wind wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219570410U true CN219570410U (en) | 2023-08-22 |
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ID=87657542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320479962.4U Active CN219570410U (en) | 2023-03-07 | 2023-03-07 | Backward centrifugal wind wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219570410U (en) |
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2023
- 2023-03-07 CN CN202320479962.4U patent/CN219570410U/en active Active
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