CN113153786B - HVLS large-scale fan - Google Patents
HVLS large-scale fan Download PDFInfo
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- CN113153786B CN113153786B CN202110385202.2A CN202110385202A CN113153786B CN 113153786 B CN113153786 B CN 113153786B CN 202110385202 A CN202110385202 A CN 202110385202A CN 113153786 B CN113153786 B CN 113153786B
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- fan
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- 238000004804 winding Methods 0.000 claims abstract description 15
- 230000001360 synchronised effect Effects 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 241000883990 Flabellum Species 0.000 claims description 14
- 239000003507 refrigerant Substances 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 description 7
- 238000005452 bending Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- 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
- F04D25/088—Ceiling fans
-
- 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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
-
- 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
-
- 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
- F04D29/34—Blade mountings
- F04D29/36—Blade mountings adjustable
-
- 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
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
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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
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
- F04D29/646—Mounting or removal of fans
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an HVLS large-sized fan, which comprises a permanent magnet synchronous power unit, a hoisting unit and a fan blade unit, wherein the permanent magnet synchronous power unit is provided with a stator assembly connected with the hoisting unit and a rotor assembly connected with the fan blade unit, the stator assembly is provided with a main shaft for assembling the hoisting unit in a top hoisting way and a stator bracket arranged on the main shaft, and the stator bracket is provided with a stator winding unit for generating a rotating magnetic field; the rotor assembly has a rear end cap and a hub and a rotor unit. The invention combines the characteristics of industrial large fans and permanent magnet synchronous driving, effectively combines the permanent magnet synchronous stator and rotor units with the structure of the industrial fans, ensures the assembly safety and the use safety of all parts on the hoisting unit and the main shaft through the double-ring locking part and the flange locking part, optimizes the anti-falling performance, avoids potential safety hazards, ensures the stability and the safety of hoisting, and further improves the stability and the service life of the large fans.
Description
Technical Field
The invention relates to the field of industrial fans, in particular to an HVLS large-sized fan.
Background
The industrial fan is widely used as an industrial machine for ventilating a large space, can better solve the problem of ventilation and cooling in a large space environment, and drives large-range air flow through the slow rotation of a huge fan blade, so that the purpose of simulating natural wind and blowing a human body in all directions is achieved, and the temperature of the human body can be effectively reduced while ventilation is carried out, so that the purpose of creating a good working environment is achieved. The novel multifunctional ventilating and cooling system is characterized in that an aerodynamic principle and streamline fan blades are adopted for generating an ultra-large-area natural breeze system, the dual functions of ventilating and cooling are achieved, and compared with the traditional ventilating and cooling air conditioner and a small high-speed fan, the novel ventilating and cooling system has incomparable application advantages.
The industrial large fans in the market at present still have various defects, and the requirements on the stability and the safety of the installation structure of the industrial large fans are high because the fan blades of the industrial large fans are long, large in size and high in rotating speed. Most industrial fans in the prior art are installed by hanging, lack of a safe anti-falling structure and unreasonable hanging structures, damage or fracture is caused, the fan is easy to fall, and safety problems are caused. Meanwhile, because the whole weight is large, vibration is generated during operation, the assembly on the main shaft is easy to loosen or even fall off, and potential safety hazards are caused. Besides the safety of the fans, the design or the use of large fans in the market is improper, so that heat dissipation becomes difficult, and the temperature rise of the motor caused by the heat dissipation possibly causes irreversible demagnetization of the permanent magnets, and the heat dissipation design is unreasonable to influence the service life of the large fans. Moreover, the angle and the torsion angle of the industrial fan blade in the prior art are unreasonable in design, and the mechanical strength and the width of the industrial fan blade are difficult to ensure due to the excessively large bent fan blade, so that the safety performance, the energy consumption, the air quantity and the like of the industrial large fan are influenced.
Disclosure of Invention
In order to solve one or more of the problems, the invention provides an HVLS large fan, which has anti-loosening self-locking lifting and anti-falling designs, improves the safety performance of the large fan, enhances the mechanical strength of fan blades, effectively ensures the heat dissipation performance of a motor, and improves the wind pushing efficiency of the large fan.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a large-scale fan of HVLS, includes synchronous power unit of permanent magnetism, hoist unit, flabellum unit, synchronous power unit of permanent magnetism has a stator module and a rotor module of connecting the flabellum unit of hoist unit, wherein:
The stator assembly is provided with a main shaft for hanging and assembling the hoisting unit at the top and a stator bracket arranged on the main shaft, and the stator bracket is provided with a stator winding unit for generating a rotating magnetic field;
A rotor assembly having: the rear end cover is provided with at least one first bearing at the center of the rear end cover, and the rear end cover is mounted on the main shaft;
and a hub contacting and engaging the rear end cap and surrounding an interior cooling space, at least one second bearing being disposed in the center of the hub for mounting the hub to the main shaft;
and a rotor unit disposed in the internal cooling space and disposed at an interval outside the stator winding unit without contacting therewith, a side surface far from the stator winding unit being bonded and fixed to the inside of the hub.
Preferably, the hoisting unit has:
The hoisting frame body is provided with a U-shaped frame body and a sleeve which is hoisted and connected to a central through hole of the U-shaped frame body, and the sleeve is arranged on the main shaft and is radially fixed by a plurality of hoisting bolts;
at least one double-ring locking part is arranged at the end part of the main shaft, and one side of the double-ring locking part is abutted against the sleeve and/or the second bearing.
Preferably, the fan blade unit has:
The impeller disc is fixedly connected with the bottom of the hub, and at least 3 fan blade supporting pieces extend out from the edge of the impeller disc in a twisting and tilting manner;
the fan blades are arranged on the fan blade supporting piece;
the fan blade connecting pieces are provided with an arc body and a connecting body extending outwards from one end of the arc body;
The arc bodies of the fan blade connecting pieces are connected end to form a combined closed ring body, and the combined closed ring body is arranged on one side of the plurality of fan blades on the fan blade supporting piece and is fixed by bolts through the two end parts of the connecting body, the fan blades and the fan blade supporting piece.
Preferably, the spindle comprises at least:
The stator assembly section is configured in the middle of the main shaft and is provided with a stator installation step, a stator installation groove and a stator positioning groove between the stator installation step and the stator installation groove, the stator installation groove is provided with a snap spring for a shaft, and the stator positioning groove is provided with a stator axial protruding piece;
At least one bearing assembly section having a bearing mounting step for receiving one side of the inner race of the first bearing and/or the second bearing;
The lifting assembly section is provided with a lifting positioning groove and at least 3 axial through holes, and the lifting positioning groove is provided with a lifting axial convex part;
the end screw thread section is provided with a locking positioning groove.
Preferably, the rear end cover has a first bearing step, the main shaft has a first bearing assembly section and a first bearing installation step configured on the first bearing assembly section, one side of an inner ring of the first bearing is received by the first bearing installation step, and an outer side face of an outer ring of the first bearing is attached to a side face of the first bearing step.
Preferably, the hub has a second bearing platform and a bearing cap arranged on the second bearing platform, and the outer ring of the second bearing is locked by the second bearing platform and the bearing cap;
The main shaft is provided with a second bearing assembly section and a second bearing installation step arranged on the second bearing assembly section, and one side of an inner ring of the second bearing is attached to the second bearing installation step.
Preferably, the double-ring locking part is provided with two retaining nuts and a self-locking gasket arranged between the two retaining nuts, at least one slot is arranged on the outer side of the retaining nuts, the self-locking gasket is provided with at least 3 folding lugs, and the self-locking gasket comprises at least 2 outer folding lugs which extend out of the outer edge of the self-locking gasket and are used for being folded in the slots, and at least 1 inner folding lug which extends out of the inner ring of the self-locking gasket and is used for limiting a locking positioning slot of an end thread section of the main shaft.
Preferably, the double ring locking part comprises a first double ring locking part arranged on one end thread section of the main shaft and a second double ring locking part arranged on the other end thread section of the main shaft far away from the first double ring locking part, wherein the bottom side of the first double ring locking part is in pressure connection with the top of the sleeve, and the top side of the second double ring locking part is in pressure connection with the inner ring of the second bearing.
Preferably, the first bearing and the second bearing are sealed bearings, and form a sealed internal cooling space with the main shaft, the rear end cover and the hub, wherein the main shaft is provided with a wire passage for energizing and wiring the stator winding unit, and the wire passage extends downwards from the center of the top to the internal cooling space to penetrate.
Preferably, the fan blade is internally provided with a reinforced supporting component extending from one end to the other end, and one end of the reinforced supporting component is inserted by the fan blade supporting piece and is fixed by a bolt;
The reinforcing support assembly is provided with a reinforcing support frame which is placed left and right and reinforcing support ribs which are arranged in the middle of the reinforcing support frame, the reinforcing support ribs comprise two groups which are arranged up and down, and each group is at least provided with 2 reinforcing support ribs.
Compared with the prior art, the invention has the following beneficial effects: the multiple safety protection design is selected for use to ensure the stability and the anti-drop of the lifting frame body, the double-ring locking part is used for further locking the lifting unit and the permanent magnet synchronous power unit, vibration generated by operation is prevented from causing assembly loosening and drop of each part, potential safety hazards are avoided, the stability and the safety performance of lifting are ensured, meanwhile, the refrigerant medium is filled in the lifting frame body for improving the heat exchange efficiency, the heat dissipation performance of the large fan is improved, and the stability and the service life of the large fan are further improved.
According to the invention, through reasonably designing the assembly torsion angle of the fan blade wheel disc and the fan blade and the bending degree of the fan blade, the width and the strength of the fan blade are increased under the condition that external factors are unchanged, the wind pushing efficiency of the industrial fan is improved, meanwhile, the reinforcing support component is additionally arranged in the fan blade, the mechanical strength of the fan blade is improved, and the safety performance of the industrial fan is further improved by matching with the fan blade connecting sheet.
Drawings
For a clearer description of the technical solutions, the drawings that are required to be used in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the present invention.
Fig. 3 is a schematic cross-sectional view of a part of the structure of the present invention.
Fig. 4 is a schematic view of a part of the structure of the fan blade unit of the present invention.
Fig. 5 is a schematic diagram of the spindle structure of the present invention.
Fig. 6 is a schematic structural view of the double ring locking portion.
Fig. 7 is a schematic structural view of a fan blade.
Detailed Description
In order that the manner in which a fully and completely understood embodiment of the invention may be readily understood, it is intended that the invention be further described in connection with the accompanying drawings, in which it is to be understood that the embodiments described are merely illustrative of some of the invention and that all other embodiments may be made by those skilled in the art without the benefit of the inventive faculty.
As shown in the figure, a HVLS large fan comprises a permanent magnet synchronous power unit 1, a hoisting unit 2 and a fan blade unit 3, wherein the permanent magnet synchronous power unit 1 is provided with a stator assembly connected with the hoisting unit 2 and a rotor assembly connected with the fan blade unit 3, and the stator assembly is as follows:
A stator assembly having a main shaft 4 on which the hoist unit is suspended and assembled at the top, and a stator bracket 101 provided on the main shaft 4, the stator bracket having thereon a stator winding unit 102 for generating a rotating magnetic field;
a rotor assembly having: a rear end cover 103, at least one first bearing 104 is configured at the center of the rear end cover 103, and the rear end cover 103 is mounted on the main shaft 4;
and a hub 105 which is in contact with the rear cover 103 and surrounds an internal cooling space, at least one second bearing 106 being disposed at the center of the hub 105, and the hub 105 being mounted to the main shaft 4;
And a rotor unit 107 disposed in the internal cooling space and disposed at intervals outside the stator winding unit 102 without contacting therewith, wherein a side surface far from the stator winding unit 102 is bonded and fixed to the inside of the hub 105, and the rotor unit has a permanent magnet acted by a magnetic field generated by the stator winding unit, so that the rotor unit is rotated by the stator assembly to drive the hub to rotate.
The hoisting unit 2 has:
the hoisting frame body is provided with a U-shaped frame body 201 and a sleeve 202 hoisted at a central through hole of the U-shaped frame body 201, and the sleeve 202 is arranged on the main shaft 4 and is radially fixed by a plurality of hoisting bolts 203;
At least one double ring locking portion 204 is disposed at an end portion of the main shaft 4 and one side abuts the sleeve and/or the second bearing.
The double-ring locking portion 204 has two retaining nuts 2041 and a self-locking washer 2042 disposed between the two retaining nuts 2041, at least one slot 2043 is provided on the outer side of the retaining nuts 2041, the self-locking washer 2042 has at least 3 folding lugs, wherein the folding lugs include at least 2 outer folding lugs 2044 extending from the outer edge of the self-locking washer 2042 for being folded into the slots, and at least 1 inner folding lug 2045 extending from the inner ring of the self-locking washer for limiting a locking positioning groove of an end thread section of the spindle.
The fan blade unit 3 includes:
an impeller plate 301 fixedly connected to the bottom of the hub 105, and having at least 3 blade supports 302 extending from its edge in a torsionally inclined manner;
A plurality of fan blades 303 disposed on the fan blade support 302;
a plurality of fan blade connecting pieces 304 having an arc body 305 and a connecting body 306 extending outwardly from one end of the arc body 305;
The arc bodies 305 of the fan blade connecting pieces 304 are connected end to form a combined closed ring body, and the combined closed ring body is arranged on one side of the plurality of fan blades 303 on the fan blade supporting piece 301 and is fixed by bolts through the two end parts of the connecting pieces 306, the fan blades 303 and the fan blade supporting piece 302.
The spindle 4 includes at least:
a stator assembly section 41, configured in the middle of the spindle, having a stator mounting step 411 and a stator mounting groove 412, and a stator positioning groove 413 between the stator mounting step 411 and the stator mounting groove 412, wherein the stator mounting groove is provided with a snap spring for a shaft, and the stator positioning groove is provided with a stator axial protruding member (not shown in the figure);
at least one bearing mounting section (42, 42 ') having a bearing mounting step (421, 421') for receiving one side of the inner race of the first bearing and/or the second bearing;
a hooking mounting section 43 having a hooking locating groove 431 and at least 3 axial through holes 432, the hooking locating groove 431 having hooking axial protrusions (not shown);
the end thread section 44 has a locking detent 441.
Example 1:
The rear end cover 103 has a first bearing step 1031, the main shaft 4 has a first bearing assembly section 42 and a first bearing mounting step 421 disposed on the first bearing assembly section 42, one side of the inner ring of the first bearing 104 is received by the first bearing mounting step 421, the inner ring side surface of the first bearing is attached to the outer surface of the first bearing section assembly section and the lower part is received by the first bearing mounting step, and the outer ring outer side surface of the first bearing is attached to the side surface of the first bearing step. The rear end cover 103 is further provided with an oil seal gasket 1032 at a central position, and the oil seal gasket 1032 is arranged above the first bearing 104, so that the tightness of the internal cooling space below the first bearing 104 is further ensured.
The hub 105 has a second bearing platform 1051 and a bearing cover 1052 arranged on the second bearing platform 1051, the bottom of the outer ring of the second bearing 106 is placed on the second bearing platform 1051, the side and the bottom are attached to the side and the bottom of the second bearing platform 1051, the top is pressed by the bearing cover 1052, and the bottom of the hub 105 is locked on the bearing cover 1052 through a bolt so as to lock the outer ring of the second bearing 106; the main shaft 4 has a second bearing assembly section 42 'and a second bearing mounting step 421' disposed on the second bearing assembly section 42', one side of the inner ring of the second bearing 106 is attached to the second bearing mounting step 421', a double-ring locking portion or a flange locking portion 205 is disposed below the second bearing 106, the flange locking portion 205 is disposed on the end screw section 44 below the main shaft, and a flange of the flange locking portion 205 abuts against the bottom of the inner ring of the second bearing 106, so that the second bearing anti-falling performance of the main shaft is effectively ensured, and the safety performance of the large fan is further improved.
In this embodiment, the first bearing 104 and the second bearing 106 are sealed bearings, and form a sealed internal cooling space with the main shaft 4, the rear end cover 103 and the hub 105, where the main shaft 4 is configured with a wire channel 45 for energizing and wiring the stator winding unit, the wire channel extends from the top center to the internal cooling space and passes out, the stator winding unit is a stator structure packaged into a whole by an insulating material such as epoxy resin, the sealing treatment means adopts a conventional stator packaging means, a refrigerant medium is introduced into the internal cooling space, the rotor unit adopts a magnetic steel ring with a permanent magnet, heat energy generated in the operation process of the rotor unit can be effectively exchanged by the refrigerant medium, and the heat dissipation performance in the permanent magnet synchronous large fan is effectively improved by the design of the internal and external dual heat dissipation structure through the outside of the hub, so that the stability of the whole product operation process is improved, and the failure rate is reduced.
In this embodiment, the hoisting unit has a U-shaped frame 201 and a sleeve 202 suspended in a central through hole of the U-shaped frame 201, where the sleeve 202 is disposed on the main shaft 4 and radially fixed by a plurality of hoisting bolts 203, and another double-ring locking portion is further disposed on an end thread section above the main shaft, and the top of the sleeve is crimped by a next ring retaining nut of the double-ring locking portion, so that the falling-off resistance of the hoisting unit is further prevented during the operation of the large-scale fan such as hoisting and running.
Further, a groove body is further configured in the sleeve, and the groove body is matched with the hanging positioning groove 431 of the hanging assembly section 43 of the main shaft to be used through the hanging axial protruding piece, so that the main shaft is prevented from rotating in the hanging and running process, and the safety performance and stability of the large fan are further guaranteed.
Further, a hoisting ring is further provided at the end of the hoisting bolt 203, and the whole of the large fan is limited by pulling through the hoisting ropes 2031 in multiple directions, so that the phenomenon that the large fan is in the air to shake when working is reduced.
Example 2:
On the basis of the embodiment 1, under the rotation of the rotor assembly, the impeller disc is fixed on the hub through a plurality of bolts, so that the impeller disc and the fan blades on the impeller disc are driven to rotate.
The impeller plate 301 has a circular chassis main body and five fan blade supporting members 302 configured at the edge of the chassis main body, the fan blade supporting members and the chassis main body are in an alpha angle torsion inclined arrangement, and the alpha angle range comprises 15 degrees to alpha >10 degrees;
The fan blade 303 has a reinforcing support member extending from one end to the other end, and one end of the reinforcing support member is inserted into the fan blade support member 302 and is fixed by a bolt;
The reinforcement support assembly has reinforcement support brackets 3031 placed right and left and reinforcement support bars 3032 disposed in the middle of the reinforcement support brackets 3031. Through the inside design of flabellum 303 penetrating type strengthening support rib 3032 and both sides strengthening support frame 3031, works as when the flabellum support piece of flabellum rim plate stretches into fixedly, its strengthening support rib and strengthening support frame play the safe laminating effect of some facial lines with the fixed laminating contact surface of flabellum support piece, except reinforcing flabellum self mechanical strength, can also reduce the long-term fatigue to flabellum support piece, effectively avoid flabellum terminal sagging and flabellum to the fatigue loss of flabellum rim plate and flabellum support piece, further improve security performance.
The industrial fan in the prior art selects the large-degree bending of the fan blade on the torsion angle of the chassis and the fan blade to match with the small-angle torsion assembly of the chassis and the fan blade, and the industrial fan designed in the type has obvious disadvantages except the mechanical strength of the fan blade, and the large-degree bending of the industrial fan brings great challenges to processing production because the industrial fan blade has large volume (5 meters in length in common), so that the conventionally used large-degree bending fan blade has poor rigidity and is easy to deform after being molded. In the fan blade assembly structure, the width of the fan blade can be widened while the pushing air quantity of the industrial fan is ensured in design, the width of the fan blade can be wider than that of the traditional fan blade on the premise of ensuring the strength of the fan blade and aspects, the design of increasing the width of the fan blade is obviously improved in the air pushing efficiency, and meanwhile, the advantage of the air sense is obvious, so that the maximum comfortable feeling of the industrial fan is ensured.
The foregoing disclosure is merely illustrative of one or more of the preferred embodiments of the present invention and is not intended to limit the scope of the invention in any way, as it is intended to cover all modifications, variations, uses, or equivalents of the invention that fall within the spirit and scope of the invention.
Claims (7)
1. The utility model provides a large-scale fan of HVLS, includes permanent magnet synchronous power unit, hoist unit, flabellum unit, the synchronous power unit of permanent magnet has a stator module and a rotor module of connecting the flabellum unit of hoist unit, its characterized in that:
The stator assembly is provided with a main shaft for hanging and assembling the hoisting unit at the top and a stator bracket arranged on the main shaft, and the stator bracket is provided with a stator winding unit for generating a rotating magnetic field;
A rotor assembly having: the rear end cover is provided with at least one first bearing at the center of the rear end cover, and the rear end cover is mounted on the main shaft;
The hub is contacted and bonded with the rear end cover and surrounds the rear end cover to form an internal cooling space, refrigerant medium is introduced into the internal cooling space, at least one second bearing is arranged in the center of the hub, and the hub is mounted on the main shaft;
And a rotor unit disposed in the internal cooling space and disposed at an interval outside the stator winding unit without contacting therewith, a side surface far from the stator winding unit being bonded and fixed to the inside of the hub;
the hoisting unit comprises:
The hoisting frame body is provided with a U-shaped frame body and a sleeve which is hoisted and connected to a central through hole of the U-shaped frame body, and the sleeve is arranged on the main shaft and is radially fixed by a plurality of hoisting bolts;
the double-ring locking part is arranged at the end part of the main shaft, one side of the double-ring locking part is abutted against the sleeve and/or the second bearing, the double-ring locking part is provided with two retaining nuts and a self-locking gasket arranged between the two retaining nuts, the outer side of the retaining nut is provided with at least one slot, the self-locking gasket is provided with at least 3 folding lugs, and the self-locking gasket comprises at least 2 outer folding lugs which extend out of the outer edge of the self-locking gasket and are used for being folded in the slot, and at least 1 inner folding lugs which extend out of the inner ring of the self-locking gasket and are used for limiting a locking positioning groove of an end thread section of the main shaft;
The fan blade unit comprises:
The impeller disc is fixedly connected with the bottom of the hub, at least 3 fan blade supporting pieces extend out from the edge of the impeller disc in a torsion and inclination mode, the impeller disc is provided with a circular chassis main body, the fan blade supporting pieces and the chassis main body are arranged in an alpha-angle torsion and inclination mode, and the alpha-angle range comprises 15 degrees to alpha >10 degrees;
the fan blades are arranged on the fan blade supporting piece;
the fan blade connecting pieces are provided with an arc body and a connecting body extending outwards from one end of the arc body;
The arc bodies of the fan blade connecting pieces are connected end to form a combined closed ring body, and the combined closed ring body is arranged on one side of the plurality of fan blades on the fan blade supporting piece and is fixed by bolts through the two end parts of the connecting body, the fan blades and the fan blade supporting piece.
2. The HVLS large fan as set forth in claim 1, wherein: the spindle includes at least:
The stator assembly section is configured in the middle of the main shaft and is provided with a stator installation step, a stator installation groove and a stator positioning groove between the stator installation step and the stator installation groove, the stator installation groove is provided with a snap spring for a shaft, and the stator positioning groove is provided with a stator axial protruding piece;
At least one bearing assembly section having a bearing mounting step for receiving one side of the inner race of the first bearing and/or the second bearing;
The lifting assembly section is provided with a lifting positioning groove and at least 3 axial through holes, and the lifting positioning groove is provided with a lifting axial convex part;
the end screw thread section is provided with a locking positioning groove.
3. The HVLS large fan as set forth in claim 2, wherein: the rear end cover is provided with a first bearing step, the main shaft is provided with a first bearing assembly section and a first bearing installation step arranged on the first bearing assembly section, one side of an inner ring of the first bearing is supported by the first bearing installation step, and the outer side face of an outer ring of the first bearing is attached to the side face of the first bearing step.
4. The HVLS large fan as set forth in claim 2, wherein: the hub is provided with a second bearing platform step and a bearing cover arranged on the second bearing platform step, and the outer ring of the second bearing is locked by the second bearing platform step and the bearing cover;
The main shaft is provided with a second bearing assembly section and a second bearing installation step arranged on the second bearing assembly section, and one side of an inner ring of the second bearing is attached to the second bearing installation step.
5. The HVLS large fan as set forth in claim 1, wherein: the double-ring locking part comprises a first double-ring locking part arranged on one end thread section of the main shaft and a second double-ring locking part arranged on the other end thread section of the main shaft far away from the first double-ring locking part, wherein the bottom side of the first double-ring locking part is in pressure joint with the top of the sleeve, and the top side of the second double-ring locking part is in bearing connection with the inner ring of the second bearing.
6. The HVLS large fan as set forth in claim 1, wherein: the first bearing and the second bearing are sealed bearings, and a sealed internal cooling space is formed with the main shaft, the rear end cover and the hub, wherein the main shaft is provided with a wire channel for energizing and wiring the stator winding unit, and the wire channel extends downwards from the center of the top to the internal cooling space to penetrate out.
7. The HVLS large fan as set forth in claim 1, wherein: the fan blade is internally provided with a reinforced supporting component extending from one end to the other end, and one end of the reinforced supporting component is inserted by the fan blade supporting piece and fixed by a bolt;
The reinforcing support assembly is provided with a reinforcing support frame which is placed left and right and reinforcing support ribs which are arranged in the middle of the reinforcing support frame, the reinforcing support ribs comprise two groups which are arranged up and down, and each group is at least provided with 2 reinforcing support ribs.
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| CN202110385202.2A CN113153786B (en) | 2021-04-09 | 2021-04-09 | HVLS large-scale fan |
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| CN202110385202.2A CN113153786B (en) | 2021-04-09 | 2021-04-09 | HVLS large-scale fan |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI773494B (en) * | 2021-08-20 | 2022-08-01 | 風動世界有限公司 | An industrial fan suspension mechanism |
| CN115059627A (en) * | 2022-06-29 | 2022-09-16 | 浙江旺得福车业有限公司 | Industrial fan and mounting structure thereof |
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