CN109441877B - Wind wheel for motor heat dissipation and fan comprising wind wheel - Google Patents
Wind wheel for motor heat dissipation and fan comprising wind wheel Download PDFInfo
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- CN109441877B CN109441877B CN201811611458.5A CN201811611458A CN109441877B CN 109441877 B CN109441877 B CN 109441877B CN 201811611458 A CN201811611458 A CN 201811611458A CN 109441877 B CN109441877 B CN 109441877B
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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
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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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
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
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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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5853—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
Abstract
The invention discloses a wind wheel for motor heat dissipation and a fan comprising the wind wheel, wherein the wind wheel comprises a wind wheel hub, an inner wind guide ring, an outer wind guide ring, inner blades arranged between the inner wind guide ring and the wind wheel hub, and outer blades arranged between the inner wind guide ring and the outer wind guide ring, the inner blades and the outer blades both use a central shaft of the wind wheel hub as a rotation center, and the bending directions of the inner blades and the outer blades are the same. The fan includes motor, wind wheel and fan support, the motor includes front end housing and rear end cap, uses through the fin cooperation in the inlayer blade in the fan and the motor outside, makes the heat dissipation runner that the inlayer blade of wind wheel formed dispel the heat to the motor, and outer blade cooperation fan support forms the ventilation runner simultaneously and realizes that the fan air-out just does not interfere with each other with the heat dissipation runner.
Description
Technical Field
The invention relates to the field of fans, in particular to a wind wheel for motor heat dissipation and a fan comprising the wind wheel.
Background
The existing fan is limited by space size, and a motor is generally arranged in a hub of a wind wheel, so that the phenomena of slow heat dissipation and overheating of the motor are easily caused. Particularly, when the fan is used in a high-temperature environment, the following three problems mainly exist:
1. the motor dissipates heat slowly, causing the efficiency of the motor to decrease.
2. The high temperature causes the bearing life in the motor to be reduced, and the phenomenon of bearing locking is easily caused in serious conditions.
3. For the brushless motor, the brushless motor is used in a high-temperature environment, for example, poor heat dissipation, and the phenomenon of electric control failure caused by overhigh temperature of an electric control part of the motor is easily caused.
Patent publication No. CN207892887U discloses a low-noise double-layer fan and fan. The double-deck fan blade of low noise includes: the mounting point of the inner-layer blade is positioned in front of the mounting point of the outer-layer blade, and the inner-layer blade and the outer-layer blade both use the central shaft of the hub as a rotating center; the air guide ring is sleeved on the periphery of the inner layer blade and is of a conical structure, and the caliber of the air guide ring is gradually enlarged in the direction from the inner layer blade to the outer layer blade; the blades of the outer layer blades are forward swept, and the blades of the inner layer blades are backward swept. The inner layer blade structure in the patent reduces the turbulent noise of the outer layer blade, and the double-layer fan blade can greatly reduce the fluid noise. Meanwhile, the outer layer blades and the inner layer blades successively promote the outer layer cutting airflow to accelerate the inner layer airflow, so that the wind speed is improved. The wind guide ring also enables airflow of the inner layer blade to converge towards the center of the blade, so that the inner layer blade still has high wind speed. However, only the inner air guide ring is arranged in the patent, so that the air flow cannot be guided when the outer layer blades rotate, and the external air flow cannot be gathered.
The patent with publication number CN206175309U discloses a novel bent seven-blade fan blade structure, including outer lane, blade, inner circle, clamping ring, the inboard circumference array evenly distributed of outer lane has seven the blade, the inside centre of outer lane is provided with the inner circle, the inner circle intermediate position is provided with the clamping ring, the clamping ring with be provided with the gusset plate between the inner circle. Has the advantages that: this novel fan of bent seven leaf fan blade structures can reduce the noise of condensation fan at the operation in-process, and efficient, and the amount of wind is big, can reach the requirement of energy-conservation, low noise and big amount of wind. The fan blade structure in this patent the connecting ring with be provided with the gusset plate between the inner circle, the gusset plate structure can not dispel the heat to the motor, and the use of this fan blade structure under high temperature environment has certain restriction.
Disclosure of Invention
In order to solve the technical problem, one of the objectives of the present invention is to provide a wind wheel for heat dissipation of a motor, in which an inner layer blade and an outer layer blade are disposed on the wind wheel, and the heat dissipation of the motor is performed through a heat dissipation flow channel at the inner layer blade.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a wind wheel for heat dissipation of a motor comprises a wind wheel hub, an inner wind guide ring, an outer wind guide ring, inner blades arranged between the inner wind guide ring and the wind wheel hub, and outer blades arranged between the inner wind guide ring and the outer wind guide ring, wherein the inner blades and the outer blades both use a central shaft of the wind wheel hub as a rotation center, and the bending directions of the inner blades and the outer blades are the same. The blade root of the inner layer blade is connected with the outer wall of the wind wheel hub, the blade tip of the inner layer blade is connected with the inner wall of the inner wind guide ring, the blade root of the outer layer blade is connected with the outer wall of the inner wind guide ring, and the blade tip of the outer layer blade is connected with the inner wall of the outer wind guide ring.
Preferably, the inner layer blade and the outer layer blade are arranged in a bending mode along the radial direction and are both forward swept and bent.
Preferably, the outer blade length L1 is greater than the inner blade length L3, and the outer blade width is greater than the inner blade width. The length of the blade is the radial length from the blade root to the blade tip, and the width of the blade is the circumferential length from the front edge of the blade to the rear edge of the blade.
Preferably, the relationship among the wind wheel radius L, the outer layer blade length L1, the inner wind guiding ring radius L2 and the inner layer blade length L3 is as follows: 0.2L ≦ L1 ≦ 0.4L, 0.2L2 ≦ L3 ≦ 0.4L 2. The arrangement ensures that the wind wheel has enough ventilation system and too large heat dissipation flow channel, which can affect the wind wheel air quantity.
Preferably, the number of the outer layer blades is not equal to that of the inner layer blades, and both the number of the outer layer blades and the number of the inner layer blades are odd numbers. The number of the outer layer blades is n1, the number of the inner layer blades is n2, n1 is not equal to n2, and because if the number of the outer layer blades is the same as that of the inner layer blades or even blades are adopted, fundamental frequency and harmonic frequency noise generated by rotation of the outer layer blades and the inner layer blades are superposed, and abnormal sound is generated by the wind wheel.
Preferably, the number of the outer blades and the number of the inner blades are not in a multiple relation, otherwise fundamental frequency and harmonic frequency noise generated by rotation of the outer blades and the inner blades are superposed, and the wind wheel generates abnormal sound.
The invention also aims to provide the fan, the wind wheel in the fan is matched with the radiating fins on the outer side of the motor, so that the radiating flow channel formed by the inner layer blades of the wind wheel can radiate the heat of the motor, and meanwhile, the outer layer blades are matched with the fan support to form a ventilating flow channel, so that the air outlet of the fan is realized, and the fan and the radiating flow channel are not mutually interfered.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a fan, includes motor, wind wheel and fan support, the motor includes front end housing and rear end cap, set up the output shaft on the motor and follow the front end housing stretches out, wind wheel hub on the wind wheel center set up with the shaft hole of motor output shaft cooperation installation, wind wheel hub's shaft hole with set up a plurality of between the wheel hub inner circle by the radial strengthening rib that extends of shaft hole outer lane to the wheel hub inner circle, the strengthening rib plays the additional strengthening to wheel hub's inner circle, the wind wheel passes through the shaft hole with output shaft, the rear end cap of motor with the assembly is connected to the fan support, the wind wheel be above-mentioned arbitrary wind wheel.
Preferably, the peripheral wall of the outer side of the motor is provided with a plurality of radiating fins distributed by taking the central shaft of the motor as a rotation center.
Preferably, a heat dissipation flow channel is formed between the area where the inner-layer blade is located and the outer wall of the motor along the axial direction of the wind wheel, a ventilation flow channel is formed between the area where the outer-layer blade is located and the fan support along the axial direction of the wind wheel, the heat dissipation fins axially extend from the rear end cover to the front end cover, and the heat dissipation fins radially extend into the heat dissipation flow channel. The radiating fins can effectively increase the radiating area of the motor, and meanwhile, the radiating fins are matched with the radiating flow channels to improve the radiating effect. More specifically, the inner air guide ring is matched with the inner layer blades to form a heat dissipation flow channel, the outer layer blades are matched with the inner air guide ring, the outer air guide ring and the inner ring of the fan support to form a ventilation flow channel, so that the airflow of the inner layer blades is gathered towards the heat dissipation flow channel, and the airflow of the outer layer blades is gathered towards the ventilation flow channel by the outer air guide ring. The heat dissipation flow channel and the ventilation flow channel are independent flow channels in the wind wheel, and the two flow channels do not interfere with each other when air is exhausted.
Preferably, the heat radiating fins are arranged on the outer side wall of the rear end cover, and the diameter of the rear end cover of the motor is larger than or equal to the outer diameter of the wind wheel hub.
Preferably, the heat sink is bent in a radial direction, and the bent direction is the same as the direction in which the inner blade is bent in the radial direction. Because the inner layer blades can drive the airflow to flow to the radiating fins from the radiating channels when rotating, and the radiating fins are in a rear guide vane mode, the radiating area of the motor can be increased, the radiating efficiency of the motor can be effectively improved, the air outlet of a radiating flow channel can be effectively improved, and the efficiency of the wind wheel is improved.
Preferably, the radial projection of the radiating fin is always positioned between the inner wind guiding ring of the wind wheel and the outer wall of the wind wheel hub. The radiating fins extend into the radiating flow channel along the radial direction and do not exceed the radiating flow channel, namely, the radial upward projection of the radiating fins is always positioned between the inner air guide ring of the wind wheel and the outer wall of the wind wheel hub, so that the radiating fins can guide out the heat of the motor through the radiating flow channel, and the radiating fins can be prevented from guiding the heat into the ventilating flow channel to influence the air outlet of the fan.
Preferably, the fan support comprises a support inner ring, a support outer ring and a guide vane arranged between the support inner ring and the support outer ring, the support inner ring is fixedly connected with a rear end cover of the motor, and a continuous protruding structure is arranged at the rear edge of the guide vane. Set up a plurality of installation department on the inner wall of support inner circle, set up a plurality of screw hole on the installation department, set up in the corresponding fixed part of installation department on the rear end cap of motor simultaneously, set up a plurality of screw hole on the fixed part, connect installation department and fixed part through the screw and realize between the fan with the fixed mounting of motor, the region at outer blade place along the wind wheel axial with form the ventilation runner between the support outer lane of fan support, when the outer blade of wind wheel is rotatory, the air current flows in the ventilation runner through outer blade, then from guide vane's blade trailing edge department air-out, noise when continuous bulge structure can reduce the wind.
Preferably, the continuous protrusion structure is a zigzag structure or a corrugated structure.
Preferably, the number of the cooling fins is different from the number of the guide vanes, the number of the outer-layer vanes and the number of the inner-layer vanes. If the number of the radiating fins, the number of the guide vanes of the fan bracket, the number of the outer-layer vanes and the number of the inner-layer vanes are equal, fundamental frequency and harmonic frequency noise generated by rotation of the outer-layer vanes and the inner-layer vanes and interference noise of wind outlet of the wind wheel vanes acting on the radiating fins and the guide vanes are mutually superposed, so that abnormal noise is generated by the wind wheel.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention discloses a wind wheel for motor heat dissipation, which comprises an inner layer blade arranged between an inner wind guide ring and a wind wheel hub and an outer layer blade arranged between the inner wind guide ring and the outer wind guide ring, wherein the area of the inner layer blade forms a heat dissipation flow channel with the outer wall of a motor along the axial direction of the wind wheel, the area of the outer layer blade forms a ventilation flow channel with a fan bracket along the axial direction of the wind wheel, the outer wall of the motor is provided with a heat dissipation sheet, the heat dissipation sheet extends into the heat dissipation flow channel along the radial direction, the motor can generate heat after the fan runs for a long time, the air flow is driven to flow to the heat dissipation sheet from the heat dissipation channel when the inner layer blade rotates, and the heat dissipation sheet is in a rear guide vane form, so that the heat dissipation flow channel is matched with the heat dissipation sheet, the efficiency of the wind wheel is improved. The invention can solve the problem of low motor efficiency caused by slow heat dissipation of the fan in a high-temperature environment, and meanwhile, the heat dissipation runner can timely dissipate heat of the motor, so that the service life of the motor can be prolonged, and the phenomenon of electric control failure caused by overhigh temperature rise of an electric control part of the motor due to poor heat dissipation of the motor in the high-temperature environment is avoided.
Drawings
FIG. 1 is a front view of a wind wheel for heat dissipation of a motor according to the present invention;
FIG. 2 is a rear view of a wind wheel for heat dissipation of a motor according to the present invention;
FIG. 3 is a schematic structural diagram of a motor in a blower according to the present invention;
FIG. 4 is a right side view of a motor in a blower of the present invention;
FIG. 5 is a front view of a motor in a blower of the present invention;
FIG. 6 is a front view of a blower of the present invention;
FIG. 7 is a cross-sectional view taken along line A of FIG. 6;
FIG. 8 is a rear view of a blower of the present invention;
reference numerals:
11. a wind wheel; 11. outer layer blades; 12. an inner layer blade; 13. an outer wind guide ring; 14. an inner wind guide ring; 15. a wind wheel hub; 16. reinforcing ribs; 17. a shaft hole; 2. a motor; 21. a front end cover; 22. a rear end cap; 23. a heat sink; 24. an output shaft; 25. a fixed part; 3. a fan bracket; 31. an inner ring of the bracket; 32. an outer ring of the bracket; 33. a guide vane; 34. an installation part.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following embodiments.
Example 1
As shown in fig. 1 and 2, the embodiment discloses a wind wheel for heat dissipation of a motor, which includes a wind wheel hub 15, an inner wind guiding ring 14, an outer wind guiding ring 13, an inner layer blade 12 disposed between the inner wind guiding ring 14 and the wind wheel hub 15, and an outer layer blade 11 disposed between the inner wind guiding ring 14 and the outer wind guiding ring 13, wherein the inner layer blade 12 and the outer layer blade 11 both use a central axis of the wind wheel hub 15 as a rotation center, and bending directions of the inner layer blade 12 and the outer layer blade 11 are the same. The blade root of the inner layer blade 12 is connected with the outer wall of the wind wheel hub 15, the blade tip of the inner layer blade 12 is connected with the inner wall of the inner wind guide ring 14, the blade root of the outer layer blade 11 is connected with the outer wall of the inner wind guide ring 14, and the blade tip of the outer layer blade 11 is connected with the inner wall of the outer wind guide ring 13.
The inner layer blade 12 and the outer layer blade 11 are arranged in a bending mode along the radial direction and are both forward swept and bent. The length L1 of the outer blade 11 is greater than the length L3 of the inner blade 12, and the width of the outer blade 11 is greater than the width of the inner blade 12. The length of the blade is the radial length from the blade root to the blade tip, and the width of the blade is the circumferential length from the front edge of the blade to the rear edge of the blade.
The number of the outer layer blades 11 is not equal to that of the inner layer blades 12, and both the number of the outer layer blades 11 and the number of the inner layer blades 12 are odd numbers. The number of the outer layer blades 11 is n1, the number of the inner layer blades 12 is n2, n1 ≠ n2, because if the number of the outer layer blades 11 is the same as that of the inner layer blades 12 or the number of the inner layer blades 12 is even, fundamental frequency and harmonic frequency noise generated by rotation of the outer layer blades 11 and the inner layer blades 12 are superposed, so that the wind wheel 1 generates abnormal sound.
As shown in fig. 6-8, this embodiment also discloses a fan, including motor 2, wind wheel 1 and fan support 3, motor 2 includes front end housing 21 and rear end housing 22, set up output shaft 24 on the motor 2 and follow front end housing 21 stretches out, wind wheel hub 15 center on the wind wheel 1 set up with the shaft hole 17 of the 24 cooperation installations of output shaft of motor 2, wind wheel hub 15 the shaft hole 17 with set up a plurality of by shaft hole 17 outer lane to the radial strengthening rib 16 that extends of wheel hub inner circle between the wheel hub inner circle, strengthening rib 16 plays the reinforcing action to wheel hub's inner circle, the wind wheel passes through shaft hole 17 with output shaft 24 is connected, motor 2's rear end housing 22 with fan support 3 connects the assembly.
As shown in fig. 3 to 5, a plurality of heat dissipation fins 23 are disposed on the outer peripheral wall of the motor 2 and distributed around the central axis of the motor 2 as the rotation center. The cooling fins 23 are arranged on the outer side wall of the rear end cover 22, the diameter of the rear end cover 22 of the motor 2 is larger than or equal to the outer diameter of the wind wheel hub 15, and the diameter of the rear end cover 22 of the motor 2 is smaller than the diameter of the inner wind guiding ring 14 of the wind wheel 1, so that the installation space of the cooling fins 23 is ensured. The region where the inner layer blades 12 are located forms a heat dissipation flow channel with the outer wall of the motor 2 along the axial direction of the wind wheel, the region where the outer layer blades 11 are located forms a ventilation flow channel with the fan support 3 along the axial direction of the wind wheel 1, the heat dissipation fins 23 axially extend from the rear end cover 22 to the front end cover 21, and the heat dissipation fins 23 radially extend into the heat dissipation flow channel.
As shown in fig. 7, the radial projection of the heat sink 23 is always located between the inner wind guiding ring 14 of the wind wheel 1 and the outer wall of the wind wheel hub 15. The radiating fins 23 extend into the radiating flow channels in the radial direction and do not exceed the radiating flow channels, that is, the radial upward projection of the radiating fins 23 is always located between the inner wind guiding ring 14 of the wind wheel 1 and the outer wall of the wind wheel hub 15, the radiating fins 23 are only located in the radiating flow channels and do not extend into the ventilating flow channels, so that interference with the ventilating flow channels is avoided, the radiating fins 23 are ensured to guide out heat of the motor 2 through the radiating flow channels, and the radiating fins 23 are prevented from guiding the heat into the ventilating flow channels to influence the air outlet of the fan. The radiating fins 23 can effectively increase the radiating area of the motor 2, and meanwhile, the radiating fins 23 are matched with the radiating flow channels to improve the radiating effect. More specifically, the inner air guiding ring 14 is matched with the inner layer blade 12 to form a heat dissipation flow channel, the outer layer blade 11 is matched with the inner air guiding ring 14, the outer air guiding ring 13 and the inner ring of the fan bracket 3 to form a ventilation flow channel, so that the airflow of the inner layer blade 12 is gathered towards the heat dissipation flow channel, and the airflow of the outer layer blade 11 is gathered towards the ventilation flow channel by the outer air guiding ring 13. The heat dissipation flow channel and the ventilation flow channel are independent flow channels in the wind wheel 1, and the two flow channels do not interfere with each other when air is exhausted.
The heat radiating fins 23 are arranged to be bent in the radial direction, and the bent direction is the same as the direction in which the inner blades 12 are bent in the radial direction. Because the inner layer blade 12 can drive the air current to flow to the radiating fin 23 from the radiating channel when rotating, and the radiating fin 23 is in a rear guide vane form, the radiating area of the motor 2 can be increased, the radiating efficiency of the motor 2 can be effectively improved, the air outlet of the radiating channel can be effectively improved, and the efficiency of the wind wheel 1 can be improved.
As shown in fig. 6 and 8, the fan support 3 includes a support inner ring 31, a support outer ring 32, and a guide vane 33 disposed between the support inner ring 31 and the support outer ring 32, the support inner ring 31 is fixedly connected to the rear end cover 22 of the motor 2, and a continuous protrusion structure is disposed at a blade rear edge of the guide vane 33. Set up a plurality of installation department 34 on the inner wall of support inner circle 31, set up a plurality of screw hole on the installation department 34, set up in the corresponding fixed part 25 of installation department 34 on the rear end cap 22 of motor 2 simultaneously, set up a plurality of screw hole on the fixed part 25, connect installation department 34 and fixed part 25 through the screw and realize between the fan and motor 2's fixed mounting, the region at outer blade 11 place along wind wheel 1 axial with form the ventilation runner between the support outer lane 32 of fan support 3, when the outer blade 11 of wind wheel 1 is rotatory, the air current flows in the ventilation runner through outer blade 11, then follow guide vane 33's blade trailing edge air-out, noise when continuous protruding structure can reduce the play wind. The continuous protruding structure is a sawtooth structure or a corrugated structure.
The number of the cooling fins 23 is different from the number of the guide vanes 33, the number of the outer-layer vanes 11, and the number of the inner-layer vanes 12. If the number of the heat radiating fins 23, the number of the guide vanes 33 of the fan bracket 3, the number of the outer blades 11, and the number of the inner blades 12 are equal, fundamental frequency and harmonic frequency noise generated by rotation of the outer blades 11 and the inner blades 12 and interference noise of wind turbine blade wind on the heat radiating fins 23 and the guide vanes 33 are mutually superposed, so that the wind turbine 1 generates abnormal noise.
Example 2
This embodiment will be described only for differences from the above-described embodiment, and the remaining technical features are the same as those of the above-described embodiment. In this embodiment, the relationship among the radius L of the wind wheel 1, the length L1 of the outer blade 11, the radius L2 of the inner ring of the inner wind guiding ring 14, and the length L3 of the inner blade 12 is as follows: 0.2L ≦ L1 ≦ 0.4L, 0.2L2 ≦ L3 ≦ 0.4L 2. The arrangement ensures that the wind wheel 1 has enough ventilation system and too large heat dissipation flow channel to influence the wind volume of the wind wheel 1.
Example 3
This embodiment will be described only for differences from the above-described embodiment, and the remaining technical features are the same as those of the above-described embodiment. In the present embodiment, the number of the outer blades 11 and the number of the inner blades 12 are not multiple, otherwise the fundamental frequency and harmonic frequency noise generated by the rotation of the outer blades 11 and the inner blades 12 are superimposed, so that the wind wheel 1 generates abnormal sound.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (8)
1. A wind wheel for heat dissipation of a motor is characterized by comprising a wind wheel hub, an inner wind guide ring, an outer wind guide ring, inner blades arranged between the inner wind guide ring and the wind wheel hub, and outer blades arranged between the inner wind guide ring and the outer wind guide ring, wherein the inner blades and the outer blades both use a central shaft of the wind wheel hub as a rotation center, and the bending directions of the inner blades and the outer blades are the same;
the relationship among the wind wheel radius L, the outer layer blade length L1, the inner wind guide ring radius L2 and the inner layer blade length L3 is as follows: 0.2L ≦ L1 ≦ 0.4L, 0.2L2 ≦ L3 ≦ 0.4L 2;
the number of the outer layer blades is not equal to that of the inner layer blades, and both the number of the outer layer blades and the number of the inner layer blades are odd numbers.
2. The wind wheel for dissipating heat of an electric motor according to claim 1, wherein the length L1 of the outer blade is greater than the length L3 of the inner blade, and the width of the outer blade is greater than the width of the inner blade.
3. A fan comprises a motor, a wind wheel and a fan support, wherein the motor comprises a front end cover and a rear end cover, an output shaft is arranged on the motor and extends out of the front end cover, a shaft hole matched with the output shaft of the motor is formed in the center of a wind wheel hub on the wind wheel, the wind wheel is connected with the output shaft through the shaft hole, the rear end cover of the motor is connected with the fan support for assembly, and the fan is characterized in that the wind wheel is the wind wheel in any one of claims 1-2.
4. The fan as claimed in claim 3, wherein a plurality of heat dissipating fins are provided on an outer peripheral wall of the motor so as to be distributed around a central axis of the motor as a rotation center.
5. The fan according to claim 4, wherein a heat dissipation channel is formed between the area where the inner-layer blade is located and the outer wall of the motor along the axial direction of the wind wheel, a ventilation channel is formed between the area where the outer-layer blade is located and the fan support along the axial direction of the wind wheel, the heat dissipation fins extend from the rear end cover to the front end cover along the axial direction, and the heat dissipation fins extend into the heat dissipation channel along the radial direction.
6. The wind turbine of claim 5, wherein the radial projection of the heat sink is always located between the inner wind guiding ring of the wind turbine and the outer wall of the wind turbine hub.
7. The fan according to claim 6, wherein the fan support comprises a support inner ring, a support outer ring and a guide vane arranged between the support inner ring and the support outer ring, the support inner ring is fixedly connected with a rear end cover of the motor, and a continuous convex structure is arranged at a blade rear edge of the guide vane.
8. The fan of claim 7, wherein the number of the heat dissipation fins is different from the number of the guide vanes, the number of the outer blades, and the number of the inner blades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811611458.5A CN109441877B (en) | 2018-12-27 | 2018-12-27 | Wind wheel for motor heat dissipation and fan comprising wind wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811611458.5A CN109441877B (en) | 2018-12-27 | 2018-12-27 | Wind wheel for motor heat dissipation and fan comprising wind wheel |
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| Publication Number | Publication Date |
|---|---|
| CN109441877A CN109441877A (en) | 2019-03-08 |
| CN109441877B true CN109441877B (en) | 2020-11-06 |
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| CN201811611458.5A Active CN109441877B (en) | 2018-12-27 | 2018-12-27 | Wind wheel for motor heat dissipation and fan comprising wind wheel |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906046A (en) * | 2017-12-18 | 2018-04-13 | 泛仕达机电股份有限公司 | A kind of blast fan |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2848620A1 (en) * | 2002-12-13 | 2004-06-18 | Valeo Systemes Dessuyage | Fan for cooling motor of automobile car, has several blades distributed regularly around bowl which is moved in axial rotation where each blade is partially hollow at part situated directly near leading edge |
| KR20060015994A (en) * | 2004-08-16 | 2006-02-21 | 최효승 | Electric fan's flyer for both motor's cooling and electric fan which is used |
| CN102678622A (en) * | 2011-03-14 | 2012-09-19 | 石培贤 | Fan blade hub |
| CN205895653U (en) * | 2016-07-30 | 2017-01-18 | 德州天森空调设备有限公司 | Fan |
| CN205937221U (en) * | 2016-08-17 | 2017-02-08 | 芜湖美智空调设备有限公司 | Impeller subassembly, axial fan and cabinet air conditioner |
-
2018
- 2018-12-27 CN CN201811611458.5A patent/CN109441877B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906046A (en) * | 2017-12-18 | 2018-04-13 | 泛仕达机电股份有限公司 | A kind of blast fan |
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| CN109441877A (en) | 2019-03-08 |
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