WO2020171278A1 - 팬 모터 - Google Patents
팬 모터 Download PDFInfo
- Publication number
- WO2020171278A1 WO2020171278A1 PCT/KR2019/003602 KR2019003602W WO2020171278A1 WO 2020171278 A1 WO2020171278 A1 WO 2020171278A1 KR 2019003602 W KR2019003602 W KR 2019003602W WO 2020171278 A1 WO2020171278 A1 WO 2020171278A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- insulator
- rotor
- neck
- fan motor
- barriers
- Prior art date
Links
- 239000012212 insulator Substances 0.000 claims abstract description 104
- 230000004888 barrier function Effects 0.000 claims abstract description 67
- 238000001816 cooling Methods 0.000 claims description 18
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims 9
- 238000005096 rolling process Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 235000008314 Echinocereus dasyacanthus Nutrition 0.000 description 1
- 240000005595 Echinocereus dasyacanthus Species 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/04—Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
-
- 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
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/12—Machines characterised by the bobbins for supporting the windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
Definitions
- the present invention relates to a fan motor, and more particularly, to a fan motor in which the inside can be cooled by a flow formed by an impeller.
- the fan motor may be installed in a vacuum cleaner or a hair dryer to generate air flow.
- the fan motor When the fan motor is installed in a home appliance such as a vacuum cleaner, it may generate a suction force that sucks air into the dust collecting unit.
- the fan motor When the fan motor is installed in a home appliance such as a hair dryer, it may generate a blowing force that pressurizes the heater.
- An example of such a fan motor may include a housing, a stator installed in the housing, a rotor rotated by the stator, a rotating shaft on which the rotor is mounted, and an impeller installed on the rotating shaft.
- the rotation shaft of the fan motor may be rotatably supported by at least one bearing, and the rotation shaft may be rotated at high speed while being supported by the bearing.
- the performance may be deteriorated, and it is preferable that the temperature inside the fan motor is maintained so as not to overheat.
- An object of the present invention is to provide a fan motor capable of maintaining a coil with high reliability and increasing a dot ratio.
- Another object of the present invention is to provide a fan motor capable of dissipating the rotor more quickly and reliably by forming a flow path capable of intensively cooling the rotor around the rotor.
- a fan motor includes a rotating shaft; A rotor mounted on the rotating shaft; A stator surrounding the rotor; And an impeller connected to the rotation shaft, wherein the stator includes a stator core; A plurality of insulators coupled to the stator core; And a coil wound around each of the plurality of insulators.
- the back yoke body and a plurality of teeth are not integrally formed, and each of the plurality of teeth may be coupled to the back yoke body, and each of the plurality of teeth may be disposed to be spaced apart from each other in the back yoke body.
- the tooth, the insulator, and the coil may be coupled to the back yoke body in a coupled state, and the coil winding operation may be easier than when the tooth is integrally formed with the back yoke body.
- Each of the plurality of teeth includes a neck coupled to the back yoke body; A shoe protruding from the neck and facing the outer circumference of the rotor may be included, and each of the plurality of insulators may support a coil and may include a barrier capable of guiding air to the periphery of the rotor.
- the coil is supported by the barrier and can be wound with a high dot ratio, and the air flowed by the impeller is guided to the barrier to pass between the rotor and the barrier, and the rotor can be quickly radiated.
- Each of the plurality of insulators includes: a neck insulator surrounding the neck, and a first barrier protruding from the neck insulator in an axial direction; It may include a pair of second barriers protruding from the neck insulator toward the inner circumference of the back yoke body.
- the first barrier may support a portion of the coil located outside the back yoke body (ie, the outer coil part) so that it does not flow down in a direction toward the rotation axis due to its own weight or vibration, and the coil has a neck so that the number of windings is maximized. It can be wound around the insulator.
- the second barrier can hold a portion of the coil located inside the back yoke body so that it does not move away from the teeth coupled with the insulator having the second barrier, and the coil can be wound around the neck insulator to maximize the number of windings. have.
- a plurality of assemblies in which the insulator and teeth are coupled may surround the outer circumference of the rotor.
- the plurality of assemblies may divide and surround the outer circumference of the rotor.
- a cooling passage that is opened in an axial direction and closed in a radial direction may be formed between the plurality of assemblies and the rotor.
- the inside of the back yoke body may be divided into the cooling passage surrounded by a plurality of assemblies and a plurality of outer passages between the insulator and the inner circumference of the back yoke body, and the air flowing from the impeller mainly comprises the cooling passage.
- the rotor, in particular, the magnet can be intensively cooled while passing.
- Each of the plurality of insulators may include a pair of first barriers, and the pair of first barriers may protrude in opposite directions to each other.
- the coil When the coil is wound around the neck insulator, it may have a pair of outer coil units, and the pair of coil end turn units may be supported with high reliability by a pair of first barriers.
- the pair of second barriers may protrude in opposite directions from the neck insulator. Each of the pair of second barriers may contact second barriers of other adjacent insulators.
- Each of the pair of second barriers may include an air guide that is in contact with a second barrier of another adjacent insulator to form a cooling passage with the adjacent other insulator.
- the fan motor may further include an inner insulator disposed on the inner circumference of the back yoke body.
- a coil space in which a coil is accommodated may be formed between the second barrier and the neck insulator and the inner insulator.
- a portion of the coil located inside the back yoke body ie, the inner coil unit) may be accommodated in the coil space.
- the inner insulator may be disposed between each of the adjacent teeth.
- One surface of the air guide may face the second barrier, the shoe, and the rotor of another adjacent insulator.
- One surface of the air guide may guide air so that the air passes between the rotor and the air guide.
- the other surface of the air guide may face the inner insulator.
- the other surface of the air guide may contact the inner coil part of the coil, and may support the coil so that the inner coil part does not flow down toward the rotor.
- Each of the pair of second barriers may include an inner insulator contactor extending from the air guide and contacting the inner insulator.
- the inner insulator container may hold the coil so that the coil does not flow through between the air guide and the inner insulator, and the inner coil part may be supported more reliably.
- the inner insulator, the neck insulator, and the second barrier may be sealed while surrounding the outer circumference of the inner coil part, and the inner coil part may be maintained with higher reliability.
- the coil since the coil is supported by the barrier, it can be wound on the insulator with a high dot ratio, and the air flowed by the impeller passes between the rotor and the barrier to quickly dissipate the rotor.
- both the outer coil unit and the inner coil unit can be supported with high reliability. It can be wound on the insulator, and as the fan motor is miniaturized, high output can be secured.
- the air guide constituting the second barrier serves as both a function of guiding air and a function of supporting the coil, thereby minimizing the number of parts and miniaturization of the fan motor.
- FIG. 1 is a longitudinal sectional view of a fan motor according to an embodiment of the present invention
- FIG. 2 is an exploded perspective view of a fan motor according to an embodiment of the present invention
- FIG. 3 is a plan view showing the inside of a fan motor according to an embodiment of the present invention.
- FIG. 4 is a cross-sectional view of a fan motor according to an embodiment of the present invention.
- FIG. 5 is a perspective view when a plurality of teeth and a plurality of insulators are separated from a back yoke body according to an embodiment of the present invention
- FIG. 6 is a perspective view illustrating an insulator according to an embodiment of the present invention.
- FIG. 1 is a longitudinal sectional view of a fan motor according to an embodiment of the present invention
- FIG. 2 is an exploded perspective view of a fan motor according to an embodiment of the present invention
- FIG. 3 is an interior view of a fan motor according to an embodiment of the present invention. It is a top view.
- the fan motor of this embodiment includes a motor body 1, a rotating shaft 2; A rotor 3 mounted on the rotating shaft 2; A stator 6 surrounding the rotor 3; It may include an impeller (8) connected to the rotation shaft (2).
- the motor body 1 may form the exterior of a fan motor.
- the motor body (1) has an air inlet (11) through which external air is sucked into the motor body (1), and an air outlet (12) through which air that has passed through the inside of the motor body (1) is discharged to the outside of the motor body (1).
- (13) (14) (15) may be formed.
- the motor body 1 may be composed of a combination of a plurality of members.
- the motor body 1 may include an impeller cover 90, an inner bracket 100, and a motor housing 160.
- the rotating shaft 2 is rotated together with the rotor 3 and may be long disposed inside the motor body 1.
- the rotation shaft 2 may be disposed long from the inside of the motor housing 160 to the inside of the impeller cover 90.
- the rotating shaft 2 may be supported by the bearings 4 and 5, and may be rotatably disposed inside the motor body 1.
- the rotating shaft 2 can be rotated by the rotor 3 while being supported by the bearings 4 and 5.
- An impeller connection to which the impeller 8 is connected may be formed on the rotating shaft 2.
- the impeller connection portion may be formed at a position spaced apart from the rotor mounting portion in which the rotor 3 is mounted among the rotation shaft 2 in the axial direction L.
- the impeller connection part may be formed at one end of the rotation shaft.
- a bearing mounting portion on which the bearings 4 and 5 are mounted may be formed on the rotating shaft 2.
- the rotor 3 may be formed in a hollow cylindrical shape.
- the rotor 3 may be mounted on the rotation shaft 2 to surround a part of the rotation shaft 2, and the rotor 3 may be rotatably positioned inside the stator 6.
- the rotor 3 may be mounted to surround a part between one end and the other end of the rotation shaft 2.
- the rotor 3 may include a magnet 32 and a pair of end plates 33 and 34 fixing the magnet 32.
- the magnet 32 may be an ND magnet.
- the magnet 32 may face the inner circumference of the stator 6 in the radial direction R.
- the rotor 3 may further include a rotor core 31 fixed to the rotation shaft 2, and when the rotor 3 further includes a rotor core 31, the magnet 32 is a rotor core 31 It may be disposed on the outer circumference of, and the magnet 32 may form the outer circumferential surface of the rotor (3). It goes without saying that the rotor 3 may be directly fixed to the outer peripheral surface of the rotating shaft 2 without the rotor core 31.
- the bearings 4 and 5 may be accommodated and supported by the motor body 1 and rotatably support the rotating shaft 2 while being connected to the rotating shaft 2.
- the bearings 4 and 5 may be rolling bearings such as ball bearings, roller bearings and needle bearings, or gas bearings.
- the rolling bearings may include an inner ring fixed to a rotating shaft, an outer ring fixed to the motor body 1, and a rolling member disposed between the inner and outer rings.
- the gas bearings may be supported by the motor body 1 to have an air gap with the rotating shaft 2.
- the fan motor may include a plurality of bearings 4 and 5.
- the plurality of bearings 4 and 5 may be arranged to be spaced apart with the rotor 3 interposed therebetween.
- any one (4) of the plurality of bearings (4) (5) may be mounted on the rotating shaft (2) to be positioned between the impeller (8) and the rotor (3), and the plurality of bearings (4) (5)
- the other 5 of the rotation shaft 2 may be mounted on the opposite side of the impeller 8, and the rotor 3 may be positioned between a plurality of bearings 4 and 5.
- Each of the plurality of bearings 4 and 5 may be mounted on the rotating shaft 2 so as to be positioned between the impeller 8 and the rotor 3.
- the plurality of bearings 4 and 5 may be mounted on the rotating shaft 2 to be spaced apart in the axial direction L.
- bearings (4) (5) a plurality of bearings (4) (5) will be described as an example in which the rotor (3) is disposed to be spaced apart, and the bearing located between the impeller (8) and the rotor (3) is referred to as a first bearing (4). And the bearing positioned on the opposite side of the impeller 8 will be referred to as the second bearing 5 and described. Meanwhile, the common configuration of the first bearing 4 and the second bearing 5 will be referred to as bearings 4 and 5 and described.
- the inner ring of the first bearing 4 may be fixed between the impeller 8 and the rotor 3 of the rotating shaft 2, and the outer ring of the first bearing 4 is the motor body 1, in particular, the inner bracket ( It may be fixed to the bearing housing 140 of 100).
- the inner ring of the second bearing 5 may be fixed to the opposite side of the impeller 8 of the rotation shaft 2, and the outer ring of the second bearing 5 is the motor body 1, in particular, the hollow body of the motor housing 160 It can be fixed to 170.
- the load and vibration of the rotating shaft 2 and the impeller 8 may be distributed and transmitted to the motor body 1 through the first bearing 4 and the second bearing 5.
- the stator 6 may be disposed inside the motor body 1.
- the stator 6 is mounted on the motor body 1 to rotate the rotor 3.
- the stator 6 may be disposed inside the motor housing 160.
- the stator 6 may be mounted to the motor body 1, in particular, the motor housing 160 with a fastening member such as a screw.
- the stator 6 may be formed in a hollow cylindrical shape as a whole.
- the stator 6 may be mounted on the inner circumference of the motor housing 160 to surround the outer circumference of the rotor 3.
- the stator 6 may be composed of a combination of a plurality of members.
- the stator 6 may include a stator core 61, an insulator and a coil.
- the insulator may be coupled to the stator core 61, and the stator 6 may include a plurality of insulators 62, 63, 64, as shown in FIGS. 2 and 3.
- a plurality of insulators 62, 63, 64 may be coupled to the stator core 61.
- the coil may be wound on the insulator, and the stator 6 may include a plurality of coils 65, 66, 67, as shown in FIGS. 2 and 3, and such a coil includes a plurality of insulators 62 (63) (64) can be wound on each.
- the insulator and the coil may correspond 1:1, and the stator 6 includes a stator core 61, a plurality of insulators 62, 63, 64, and a plurality of coils 65, 66, and 67. I can.
- the stator core 61 includes a back yoke body 68, as shown in FIG. 3; It may include a plurality of teeth 69, 70, 71 disposed inside the back yoke body 68.
- the plurality of teeth 69, 70, and 71 may be disposed to be spaced apart from each other.
- One end of each of the plurality of teeth 69, 70, and 71 may be supported by the back yoke body 68, and the other end of each of the plurality of teeth 69, 70, and 71 is outside the rotor (3). You can face it around.
- the plurality of teeth 69, 70, and 71 may be disposed at equal intervals in the circumferential direction.
- Chihuahua, insulator and coil can be 1:1:1 correspondence.
- the stator 63 has one back yoke body 68, three teeth 69, 70, 71, and three insulators 62, 63 and 63. 64) and three coils 65,66,67.
- the plurality of coils 65, 66, 67 may be spaced apart along the outer circumference of the rotor 3, and a gap (G, see FIG. 2) through which air can pass may be formed between adjacent coils. .
- the gap G may be formed to be opened in the radial direction R between outer coil portions of adjacent coils.
- the impeller 8 may be connected to the rotating shaft 2.
- the impeller 8 may be rotated inside the motor body 1, in particular, the impeller cover 90 when the rotation shaft 2 rotates.
- the impeller 8 may include a plurality of blades 85 and a hub 86 from which the plurality of blades 85 protrude.
- the plurality of blades 85 may be formed to protrude from a surface of the hub 86 facing the air intake 11.
- the motor may further include a diffuser 9 positioned inside the motor body 1.
- the diffuser 9 may be positioned after the impeller 8 in the air flow direction.
- the diffuser 9 may be disposed to be located inside the impeller cover 90 or inside the motor housing 160.
- the diffuser 9 may be coupled to at least one of the impeller cover 90, the inner bracket 100, and the motor housing 160.
- the diffuser 9 may include a body portion 91 and a diffuser vane 92 that converts the dynamic pressure of air passing through the impeller 8 into a positive pressure.
- the body portion 91 may be larger in size than the air inlet 11 and smaller in size than the impeller cover 90.
- the body portion 91 may have a rotation shaft through hole through which the rotation shaft 2 is rotatably penetrated.
- the body portion 91 may be disposed between the rotation shaft 2 and the motor body 1 to surround the outer circumference of the rotation shaft 2.
- the diffuser vane 92 may protrude from the outer circumference of the body part 91.
- the inside of the motor body 1 may be divided into a motor space S1 in which the rotor 3 and stator 6 are located, and an impeller space S2 in which the impeller 8 is rotatably accommodated.
- the space S1 and the impeller space S2 may be divided by the diffuser 9.
- An air inlet 11 may be formed in the impeller cover 90, and an impeller space S2 may be formed in the impeller cover 90.
- the inner bracket 100 may guide the air flowing from the impeller 8 between the rotor 3 and the stator 6.
- the inner bracket 100 may be provided with a flow guide 110 for guiding the air flowing from the impeller 8 between the plurality of coils 65, 66, and 67.
- the flow guide 110 may guide the air flowing from the impeller 8 to be concentrated to the rotor 3.
- the flow guide 110 may guide the air flowing from the impeller 8 toward the rotor 3 after passing through the gap G between the plurality of coils 65, 66, and 67.
- the fan motor when all of the air flowing from the impeller 8 is guided to the rotor 3 and the stator 6, the flow path resistance is large and rapid exhaust may be difficult.
- the fan motor may be configured such that a part of the air flowing from the impeller 8 is not guided to the rotor 3 and the stator 6, but is exhausted to the outside of the fan motor.
- the inner bracket 100 may be provided with an air outlet 12 (refer to FIGS. 1 and 3) through which air is exhausted to the outside of the motor body 1.
- the air outlet 12 formed in the inner bracket 100 may be an inner outlet positioned inside the fan motor.
- the inner bracket 100 includes an inner guide 120 and an outer guide 130 spaced apart from the inner guide 120 can do.
- Each of the inner guide 120 and the outer guide 130 may be formed in a ring shape.
- the outer diameter of the inner guide 120 may be smaller than the inner diameter of the outer guide 130.
- the outer guide 130 may be formed to be located outside the inner guide 120.
- the outer guide 130 may be disposed to surround the outer circumference of the inner guide 120.
- the inner guide 120 and the outer guide 130 may be formed to have a concentric shaft.
- the flow guide 110 may be connected to each of the inner guide 120 and the outer guide 130, and the flow guide 110 is formed to connect the outer circumference of the inner guide 120 and the inner circumference of the outer guide 130. I can.
- the flow guide 110 may be a guide bridge connecting the inner guide 120 and the outer guide 130.
- the flow guide 110 may correspond to the coils 65, 66, 67 and 1:1, and the flow guide 110 is formed in plural on the inner bracket 100 Can be.
- the plurality of flow guides 110 may be formed to be spaced apart from each other in the circumferential direction.
- An air outlet 12 through which air can pass may be formed between the plurality of flow guides 110.
- the air outlet 12 may be formed between the inner guide 120 and the outer guide 130 and the flow guide 110.
- a portion of each of the plurality of coils 65, 66, and 67 may be located inside the inner guide 120.
- a portion of each of the coils 65, 66, and 67 located inside the inner guide 120 may face the inner guide 120 in the radial direction R.
- the flow guide 110 may include a first guide 112 and a second guide 114.
- the first guide 112 may be formed to connect the inner guide 120 and the outer guide 130.
- the air flowed by the impeller 8 may flow to the inner bracket 100 while swirling in three dimensions. Some of this air may pass through the air outlet 12 while flowing in the axial direction (L), and the rest of the air is guided by the first guide 112 to rotate and flow in the circumferential direction and radial direction (R). It can be guided by 2 guides 114.
- One surface 113 of the first guide 112 guiding air may be a curved surface.
- the first guide 112 may have a different thickness in the radial direction, and may be gradually formed thicker toward the outside.
- One surface 113 of the first guide 112 may be smoother as it is closer to the inner guide 120, and may be steeper as it is closer to the outer guide 130.
- the first guide 112 may guide the rotating air to be guided to the second guide 114 while being collected in the inner direction of the fan motor.
- the second guide 114 may be erected on the first guide 112.
- the second guide 114 may face each of the plurality of coils 65, 66, and 67, or may face a gap G between adjacent coils. After the air guided by the first guide 112 hits one surface 115 of the second guide 114, it may be converted to a direction in which the one surface 115 of the second guide 114 guides.
- the inner bracket 100 includes a bearing 4 and 5, in particular, a bearing housing 140 supporting the first bearing 4, and an inner bridge 150 connecting the bearing housing 140 and the inner guide 120. It may contain more.
- the bearing housing 140 may be spaced apart from each of the inner guide 120 and the outer guide 130, as shown in FIGS. 1 and 2.
- the outer diameter of the bearing housing 140 may be smaller than the inner diameter of the inner guide 120, and the inner bridge 150 may be formed to connect the inner guide 110 and the bearing housing 140.
- One end of the inner bridge 150 may be connected to the inner guide 110, and the other end of the inner bridge 150 may be connected to the bearing housing 140.
- the inner bracket 100 may include a plurality of inner bridges 150, and the plurality of inner bridges 150 may be spaced apart from each other in the circumferential direction of the inner bracket 100.
- the motor housing 160 may include a hollow body 170, an outer ring 180, and a plurality of outer bridges 190.
- the hollow body 170 may be formed in a hollow cylindrical shape, and may face the rotor 3 in the axial direction L.
- the hollow body 170 may support the bearings 4 and 5, in particular, the second bearing 5.
- the outer ring 180 may be larger than the hollow body 170.
- the inner diameter of the outer ring 180 may be larger than the outer diameter of the hollow body 170, and the outer ring 180 may be located outside the hollow body 170.
- the outer ring 180 and the hollow body 170 may be spaced apart in the radial direction (R).
- the plurality of outer bridges 190 may connect the hollow body 170 and the outer ring 180.
- the plurality of outer bridges 190 may be spaced apart in the circumferential direction, and an air discharge port 15 through which air may be discharged to the outside of the fan motor may be formed between adjacent outer bridges 190.
- the air outlet 15 may be opened in the axial direction L, and hereinafter, it may be referred to as an axial air outlet 15 to be distinguished from the other air outlets 12, 13, and 14.
- Air that has cooled the rotor 3 inside the motor housing 160 may be discharged to the outside of the fan motor through the axial air discharge port 15.
- the motor housing 160 may surround the outer circumference of the stator 6 and may protect the stator 6.
- the motor housing 160 may further include a stator housing 200 and a plurality of connecting bodies 210.
- the stator housing 200 may have an inner peripheral surface facing the outer peripheral surface of the stator 6.
- the stator housing 200 may be a body to which the stator 6 is fastened, and may be a body substantially surrounding the outer circumference of the stator 6, particularly, the back yoke body 68.
- the plurality of connecting bodies 210 may connect the stator housing 200 and the outer ring 180. One end of each of the plurality of connecting bodies 210 may be connected to the stator housing 200, and the other end of each of the plurality of connecting bodies 210 may be connected to the outer ring 180.
- the plurality of connecting bodies 210 may be spaced apart in a circumferential direction, and an air outlet 14 through which air may be discharged to the outside of the fan motor may be formed between adjacent connecting bodies 210.
- the air outlet 14 may be opened in the radial direction R, and hereinafter, it may be referred to as a radial air outlet 14 to be distinguished from other air outlets.
- Some of the air cooled by the rotor 3 and the stator 6 inside the motor housing 160 may be discharged to the outside of the fan motor through the radial air discharge port 14.
- the motor housing 160 may further include an outer body 220 that is larger than the stator housing 200.
- the motor housing 160 may include a plurality of housing bridges 230 connecting the stator housing 200 and the outer body 220.
- the inner diameter of the outer body 220 may be larger than the outer diameter of the stator housing 200.
- the outer body 220 may be located outside the stator housing 200.
- the stator housing 200 and the outer body 220 may have a concentric shaft, and the outer body 220 may surround a part of the outer circumference of the inner body 220.
- the outer body 220 may be spaced apart from the stator housing 200 on the outside of the inner body 220 in the radial direction R.
- the plurality of housing bridges 230 may be formed to be spaced apart from each other in a circumferential direction, and an air outlet 13 through which air may be discharged may be formed between adjacent housing bridges 230.
- the motor housing 160 may be provided with an air discharge port (13. hereinafter referred to as the outer discharge port 13) communicating with the air discharge port 12 formed in the inner bracket 100, and the outer discharge port 13 is a stator. It may be formed between the housing 200 and the outer body 220 and the housing bridge 230.
- the housing bridge 230 may correspond to the flow guide 110 1:1, and cover the flow guide 110 so that the view of the flow guide 110 from the outside is minimized.
- the inner guide 120 of the inner bracket 100 may be connected to the stator housing 200.
- the outer guide 130 of the inner bracket 100 may be spaced apart from the inner guide 120 of the inner bracket 100 and may be connected to the outer body 200.
- Some of the air flowed by the impeller 8 sequentially passes through the air outlet 12 of the inner bracket 100 and the outer outlet 13 of the motor housing 160, and then the outside of the stator housing 200 It can be discharged out of the circumference, and this air can be quickly exhausted to the outside of the fan motor without being in direct contact with the rotor 3 and stator 6.
- Figure 4 is a cross-sectional view of a fan motor according to an embodiment of the present invention
- Figure 5 is a perspective view when a plurality of teeth and a plurality of insulators are separated from the back yoke body according to the embodiment of the present invention
- Figure 6 is an implementation of the present invention
- Each of the plurality of teeth 69, 70, and 71 may include a neck 72 and a shoe 73.
- the neck 72 may be coupled to the back yoke body 68.
- the shoe 73 may protrude from the neck 74 and may face the outer circumference of the rotor 3.
- Each of the plurality of insulators 62, 63, and 64 may include a neck insulator 74, a first barrier 75, 76, and a second barrier 77 and 78.
- the neck insulator 74 may be formed to surround the neck 72.
- the neck 72 may be formed in a hexahedral shape as a whole, and the neck insulator 74 may be formed in a hollow rectangular cylindrical shape including four walls surrounding the neck 72.
- a neck accommodation space S6 in which the neck 72 is inserted and accommodated may be formed in the neck insulator 74.
- the nep accommodation space S6 may be opened in the radial direction R.
- At least one first barrier 75 and 76 may be formed on the neck insulator 74.
- the first barriers 75 and 76 may protrude from the neck insulator 74 in the axial direction L.
- Each of the plurality of insulators 62, 63, and 64 may include a pair of first barriers 75 and 76.
- the pair of first barriers 75 and 76 may protrude in opposite directions.
- the coils 65, 66 and 67 may include an inner coil unit and a pair of outer coil units, and any one of the pair of outer coil units is a pair of first barriers 75 and 76 ) May be supported by any one of 75, and the other of the pair of outer coil units may be supported by the other 76 of the pair of first barriers 75 and 76.
- the second barriers 77 and 78 may protrude from the neck insulator 74 in a different direction from the first barriers 75 and 76.
- the second barriers 77 and 78 may protrude in a direction substantially perpendicular to the first barriers 75 and 76.
- a pair of the second barriers 77 and 78 may be formed on the neck insulator 74, and each of the pair of second barriers 77 and 78 may be formed from the neck insulator 74 to the back yoke body. (68) It can protrude toward the inner circumference.
- the fan motor may include a plurality of assemblies in which the insulator and teeth are combined.
- the outer circumference of the rotor 3 may be surrounded.
- a cooling passage S3 opened in an axial direction and closed in a radial direction may be formed between the plurality of assemblies and the rotor 3.
- the cross-sectional shape of the cooling passage S3 may have a shape that is generally close to a triangular shape, and this cooling passage S3 is between a pair of second barriers 77 and 78 and the shoe 73 and the rotor 3.
- the pair of second barriers 77 and 78 may protrude from the neck insulator 74 in opposite directions.
- Each of the pair of second barriers 77 and 78 may contact second barriers of other adjacent insulators.
- a pair of second barriers 77 and 78 constituting the first insulator 62 Any one of (78) may be in contact with one (77) of a pair of second barriers (77) (78) constituting the second insulator (63), a pair constituting the first insulator (62)
- the other 77 of the second barriers 77 and 78 of may be in contact with one 78 of the pair of second barriers 77 and 78 constituting the third insulator 64.
- Each of the pair of second barriers 77 and 78 may include an air guide 79 forming a cooling passage S3.
- the air guide 79 may contact the second barrier of the adjacent insulator to form a cooling passage S3 together with the adjacent insulator.
- the fan motor may further include an inner insulator disposed on the inner circumference of the back yoke body 68.
- the inner insulator may be disposed between each of the adjacent teeth.
- the inner insulator may correspond to a tooth 1:1, and the fan motor may include a plurality of inner insulators 81, 82, and 83.
- a coil space S4 in which a coil is accommodated may be formed between the second barrier 77 and 78 and the inner insulator 81, 82 and 83.
- One surface 79A of the air guide 79 may face the second barrier of another adjacent insulator, the shoe 73 and the rotor 3.
- the other surface 79B of the air guide 79 may face the inner insulator.
- Each of the pair of second barriers 77 and 78 may include an inner insulator contactor 80 extending from the air guide 79 and contacting the inner insulator 81, 82, and 83. have.
- a cooling passage S3 and a stator cooling passage S5 partitioned between the adjacent pair of inner insulator contactors 80 and the inner insulator may be formed.
- the stator cooling passage S5 may be partitioned with the cooling passage S3 and may be parallel to the cooling passage S3.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Motor Or Generator Cooling System (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
Claims (10)
- 회전축과;상기 회전축에 장착된 로터와;상기 로터를 둘러싸는 스테이터와;상기 회전축에 연결된 임펠러를 포함하고,상기 스테이터는스테이터 코어와;상기 스테이터 코어에 결합된 복수개 인슐레이터와;상기 복수개 인슐레이터 각각에 권선된 코일을 포함하고,상기 스테이터 코어는백 요크 바디와;상기 백 요크 바디 내부에 서로 이격되게 배치되는 복수개의 치를 포함하고,상기 복수개의 치 각각은상기 백 요크 바디에 결합되는 넥과;상기 넥에서 돌출되고 상기 로터의 외둘레를 향하는 슈를 포함하며,상기 복수개 인슐레이터 각각은상기 넥를 감싸는 넥 인슐레이터와,상기 넥 인슐레이터에서 축 방향으로 돌출된 제1베리어와;상기 넥 인슐레이터에서 상기 백 요크 바디 내둘레를 향해 돌출된 한 쌍의 제2베리어를 포함하는 팬 모터.
- 제 1 항에 있어서,상기 인슐레이터와 치가 결합된 조립체의 복수개는 상기 로터의 외둘레를 둘러싸고,복수개의 조립체와 상기 로터의 사이에는 축 방향으로 개방되고 반경 방향으로 막힌 냉각 유로가 형성된 팬 모터.
- 제 1 항에 있어서,상기 복수개 인슐레이터 각각은 한 쌍의 제1베리어를 포함하고,상기 한 쌍의 제1베리어는 서로 반대 방향으로 돌출된 팬 모터.
- 제 1 항에 있어서,상기 한 쌍의 제2베리어는 상기 넥 인슐레이터에서 서로 반대 방향으로 돌출된 팬 모터.
- 제 1 항에 있어서,상기 한 쌍의 제2베리어 각각은 인접한 타 인슐레이터들의 제2베리어와 접하는 팬 모터.
- 제 1 항에 있어서,상기 한 쌍의 제2베리어 각각은인접한 타 인슐레이터의 제2베리어와 접촉되어 인접한 타 인슐레이터와 함께 냉각 유로를 형성하는 에어 가이드를 포함하는 팬 모터.
- 제 6 항에 있어서,상기 백 요크 바디의 내둘레에 배치된 이너 인슐레이터를 더 포함하고,상기 제2베리어와 넥 인슐레이터와 이너 인슐레이터 사이에는 코일이 수용되는 코일 공간이 형성된 팬 모터.
- 제 7 항에 있어서,상기 이너 인슐레이터는 상기 인접한 치들의 사이 각각에 배치된 팬 모터.
- 제 7 항에 있어서,상기 에어 가이드의 일면은 인접한 타 인슐레이터의 제2베리어와, 슈 및 로터를 향하고,상기 에어 가이드의 타면은 상기 이너 인슐레이터를 향하는 팬 모터.
- 제 7 항에 있어서,상기 한 쌍의 제2베리어 각각은 상기 에어 가이드에서 연장되어 상기 이너 인슐레이터에 접촉되는 이너 인슐레이터 컨텍터를 포함하는 팬 모터.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/432,556 US11996732B2 (en) | 2019-02-20 | 2019-03-27 | Fan motor |
EP19916287.6A EP3930148A4 (en) | 2019-02-20 | 2019-03-27 | BLOWER MOTOR |
AU2019430538A AU2019430538B2 (en) | 2019-02-20 | 2019-03-27 | Fan motor |
Applications Claiming Priority (2)
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KR10-2019-0020011 | 2019-02-20 | ||
KR1020190020011A KR102201386B1 (ko) | 2019-02-20 | 2019-02-20 | 팬 모터 |
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WO2020171278A1 true WO2020171278A1 (ko) | 2020-08-27 |
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PCT/KR2019/003602 WO2020171278A1 (ko) | 2019-02-20 | 2019-03-27 | 팬 모터 |
Country Status (5)
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US (1) | US11996732B2 (ko) |
EP (1) | EP3930148A4 (ko) |
KR (1) | KR102201386B1 (ko) |
AU (1) | AU2019430538B2 (ko) |
WO (1) | WO2020171278A1 (ko) |
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2019
- 2019-02-20 KR KR1020190020011A patent/KR102201386B1/ko active IP Right Grant
- 2019-03-27 EP EP19916287.6A patent/EP3930148A4/en active Pending
- 2019-03-27 US US17/432,556 patent/US11996732B2/en active Active
- 2019-03-27 WO PCT/KR2019/003602 patent/WO2020171278A1/ko unknown
- 2019-03-27 AU AU2019430538A patent/AU2019430538B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
KR102201386B1 (ko) | 2021-01-12 |
US11996732B2 (en) | 2024-05-28 |
US20220149674A1 (en) | 2022-05-12 |
AU2019430538A1 (en) | 2021-10-07 |
EP3930148A1 (en) | 2021-12-29 |
AU2019430538B2 (en) | 2023-08-31 |
EP3930148A4 (en) | 2022-11-16 |
KR20200101747A (ko) | 2020-08-28 |
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