WO2022169110A1 - Aspirateur - Google Patents

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Publication number
WO2022169110A1
WO2022169110A1 PCT/KR2021/095125 KR2021095125W WO2022169110A1 WO 2022169110 A1 WO2022169110 A1 WO 2022169110A1 KR 2021095125 W KR2021095125 W KR 2021095125W WO 2022169110 A1 WO2022169110 A1 WO 2022169110A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
impeller
rotor
stator
vacuum cleaner
Prior art date
Application number
PCT/KR2021/095125
Other languages
English (en)
Korean (ko)
Inventor
박태상
강민석
강원수
Original Assignee
삼성전자(주)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성전자(주) filed Critical 삼성전자(주)
Publication of WO2022169110A1 publication Critical patent/WO2022169110A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/22—Mountings for motor fan assemblies
    • 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
    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • 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
    • 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
    • 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
    • H02K7/08—Structural association with bearings
    • 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

Definitions

  • the present disclosure relates to a vacuum cleaner, and more particularly, to a suction motor for a vacuum cleaner.
  • a motor is a device that obtains rotational force from electrical energy, and includes a stator (stator) and a rotor (rotor).
  • the rotor may be rotated by electromagnetic interaction with the stator.
  • the motor may provide rotational force in various home appliances, for example, a vacuum cleaner, a fan, a washing machine, and the like.
  • the vacuum cleaner uses a suction motor capable of sucking air on a surface to be cleaned, separating and collecting dust or contaminants from the sucked air, and discharging the purified air to the outside.
  • a high-performance suction motor having a rated rotation speed of over 100,000 rpm is used to increase the suction power as well as miniaturization.
  • This suction motor includes a pair of rolling bearings for supporting both ends of the rotating shaft of the rotor.
  • the motor efficiency decreases due to friction, and the temperature of the rolling bearing increases due to frictional heat, which reduces the lifespan of the rolling bearing. can cause
  • a foil bearing is disposed between the impeller and the rotating shaft of the rotor, and a thrust foil bearing is disposed on the opposite side thereof.
  • the impeller and the motor can communicate with each other.
  • the impeller which creates a vacuum and sucks air, introduces air with a pressure of atmospheric pressure into this empty space, so it is not possible to create a sufficient vacuum, and the suction efficiency is lowered.
  • the thrust foil bearing is very large in size, making it difficult to downsize the suction motor.
  • a vacuum cleaner having a suction motor having excellent suction efficiency, low noise, and excellent cooling effect is provided.
  • the suction motor includes a housing, a stator fixedly supported by the housing, a rotor rotating with respect to the stator and having a rotating shaft, a rolling bearing supporting one side of the rotating shaft to the housing, and the other side of the rotating shaft supporting the housing
  • the foil bearing is located upstream of the flow path between the impeller and the stator.
  • the foil bearing may include a cylindrical cartridge, a cylindrical bumping sheet contacting within the cartridge and corrugated along a circumference, and a cylindrical foil sheet contacting the bumping seat.
  • the rotation shaft may partially contact the foil sheet when it is stopped, and may not contact the foil sheet when it rotates.
  • the rotor may include a cylindrical core surrounding the rotation shaft, and an inner diameter of the foil bearing may be greater than or equal to an outer diameter of the rotor core and an outer diameter of the rolling bearing.
  • the housing may include a first housing and a second housing coupled to the first housing and supporting the foil bearing.
  • the second housing may include a first polygonal frame supporting the stator, and a cylindrical second frame coupled to the first frame and accommodating the foil bearing.
  • the second frame may be located upstream of the flow path between the impeller and the stator.
  • the impeller may include a frame accommodating portion accommodating at least a portion of the second frame.
  • the fan cover includes a first opening facing the housing and a second opening formed on an opposite side of the first opening, and the impeller includes a blade shaped to allow air to be sucked from the first opening toward the second opening. can do.
  • the suction motor may further include a diffuser for guiding the air discharged from the impeller.
  • a method of manufacturing a vacuum cleaner having a suction motor according to an aspect is provided.
  • the suction motor couples the impeller to one end of the rotating shaft of the rotor and the rolling bearing to the other end, the stator and the foil bearing to the housing, the fan cover to the lower part of the housing, and the rotating shaft of the rotor to the fan It is assembled by inserting it to pass through the center of the cover and the housing, attaching the rolling bearing to the housing, and coupling the diffuser to the lower end of the fan cover.
  • a foil bearing supporting the motor rotation shaft is disposed in an environment close to vacuum, so that external air can be prevented from flowing through the empty space on the foil bearing side, so that the suction efficiency can be improved.
  • the foil bearing is disposed as close as possible to the impeller fixed to the rotating shaft of the rotor, thereby reducing friction and vibration transmission due to mass imbalance, and as a result, the life of the foil bearing can be improved.
  • the suction motor for a vacuum cleaner of the present disclosure since air flows into the impeller through the motor unit side, the motor unit is cooled with the air before it is compressed by the impeller, so that cooling efficiency can be improved.
  • FIG. 1 is a view showing a vacuum cleaner according to an embodiment.
  • FIG. 2 is a view showing the suction motor of FIG. 1 .
  • FIG. 3 is an exploded view of the suction motor of FIG. 2 as viewed from above.
  • FIG. 4 is an exploded view of the suction motor of FIG. 2 as viewed from below.
  • FIG. 5 is a view showing the second housing of FIG. 3 .
  • FIG. 6 is a cross-sectional view illustrating a rotor and an impeller coupled to each other according to an embodiment.
  • FIG. 7 is a cross-sectional view taken along the line A-A of the suction motor of FIG. 2 .
  • FIG. 8 is a cross-sectional view showing a foil bearing according to an embodiment
  • FIG. 9 is a view showing the operation of the foil bearing in the stationary state and the rotating state of the rotating shaft according to an embodiment.
  • FIG. 10 is a view showing a comparison of the air temperature distribution of the suction motor according to the prior art and an embodiment.
  • FIG. 11 is a flowchart illustrating an assembly process of a suction motor according to an exemplary embodiment.
  • expressions such as “have,” “may have,” “include,” or “may include” indicate the presence of a corresponding characteristic (eg, a numerical value, function, operation, or component such as a part). and does not exclude the presence of additional features.
  • expressions such as “A or B,” “at least one of A and/and B,” or “one or more of A or/and B” may include all possible combinations of the items listed together.
  • “A or B,” “at least one of A and B,” or “at least one of A or B” means (1) includes at least one A, (2) includes at least one B; Or (3) it may refer to all cases including both at least one A and at least one B.
  • FIG. 1 is a view of a vacuum cleaner 1 according to an embodiment.
  • the vacuum cleaner 1 includes a cleaning main body 2 , a suction unit 3 for sucking dust or foreign substances on a cleaning surface, and a cleaning main body 2 for dust or foreign substances sucked from the suction unit 3 . It may include a connecting tube (4) for transmitting.
  • the cleaning main body 2 may include a suction motor 21 that generates a suction force.
  • the suction motor 21 generates a suction force to suck dust or foreign substances. A detailed structure of the suction motor 21 will be described later.
  • the cleaning body 2 may include a battery 23 for supplying power to the suction motor 21 .
  • the battery 23 may be implemented as a rechargeable secondary battery.
  • the battery 23 supplies power to the suction motor 21 .
  • the battery 23 may include a charging terminal.
  • the cleaner main body 2 may further include a manipulation unit for operating the on or off operation of the vacuum cleaner 1 .
  • the cleaning main body 2 may further include a filter assembly for filtering the sucked dust or foreign substances.
  • the filter assembly may be detachably coupled to the suction motor 21 to filter out dust or foreign substances in the air sucked from the cleaning surface through the suction unit 3 and the connection pipe 4 by suction force.
  • the filter assembly may further include a dust collecting bin containing the filtered dust or foreign substances, a filter provided at intervals in the dust collecting bin, for example, a cyclone.
  • the dust collector may suck air through the suction unit 3 and the connection pipe 4 .
  • the air sucked in this way may be transferred to the suction motor 21 after dust or foreign substances are filtered through the filter in the dust collector and discharged to the outside.
  • the suction unit 3 may perform cleaning by sucking dust or foreign substances on the cleaning surface with the suction power of the cleaning main body 2 .
  • connection pipe 4 may include a plurality of pipes having a hollow therein to form an air passage between the cleaning main body 2 and the suction unit 3 .
  • the connecting pipe 4 may be formed by connecting a plurality of pipes to be stretchable.
  • FIG. 2 is a view showing the suction motor 21 of FIG. 1
  • FIG. 3 is an exploded view of the suction motor 21 of FIG. 2 as viewed from above
  • FIG. 4 is a view showing the suction motor 21 of FIG.
  • FIG. 5 is a view showing the second housing 212 of FIG. 3
  • FIG. 6 is a cross-sectional view showing the rotor 214 and the impeller 223 coupled to each other
  • FIG. 7 is the suction motor of FIG. (21) is a cross-sectional view taken along line A-A.
  • the suction motor 21 may include a motor unit 210 and a fan unit 220 coupled to each other.
  • the motor unit 210 includes a first housing 211 , a second housing 212 coupled to the first housing, a stator 213 fixedly supported between the first housing 211 and the second housing 212 , a stator It may include a rotor 214 rotated with respect to 213 and having a rotation shaft 2141 , and a driving circuit board 215 disposed on the first housing 211 .
  • the first housing 211 may include, for example, a polymer material base frame 211a and a metal reinforcement frame 211b insert-injected into the base frame 211a. .
  • the base frame 211a may include, for example, three first supporting parts 2113 extending downward from the outer edge of the first flange 2112 and the circular first flange 2112 in which the hollow 2111 is formed.
  • the reinforcing frame 211b extends downward from the outer edge of the circular second flange 2115 in which the hollow 2114 is formed, and the second flange 2115 to support the iron core 2133 of the stator 213 to be described later. It may include three second support parts 2116 .
  • a rolling bearing 216 provided at one end of the rotation shaft 2141 of the rotor 214 may be coupled within the hollow 2114 of the second flange 2115 .
  • three supporting parts 2113 may be fastened to the second housing 212 through bolts 2114 .
  • the second housing 212 has a hollow 2121, for example, a triangular first frame 2122, the first frame 2122 extending downward from each vertex of the three A bridge 2123 and a cylindrical second frame 2124 connected to the lower ends of the three bridges 2123 may be included.
  • the second frame 2124 may be equipped with a foil bearing 217 capable of supporting one end of the rotation shaft 2141 of the rotor 214 therein. A detailed structure of the foil bearing 217 will be described later.
  • the second housing 212 includes three coupling holes 2125 for coupling the first housing 211 to the three bridges 2123 and three coupling holes 2126 for coupling the fan cover 221 to the lower portion. may include.
  • the stator 213 may be seated and supported between the first housing 211 and the second housing 212 .
  • the stator 213 is wound on the stator core 2132 whose surface is at least partially covered by insulation, for example, three winding coils (three-phase coil) 2131, the stator core ( Each of the iron core 2133 supporting the 2132 and the three winding coils 2131 may include three bus bars 2134 for power connection.
  • the rotor 214 is a rotary shaft 2141, a cylindrical core 2142 coupled to the rotary shaft 2141, and a cylindrical shape with a radius at the bottom of the rotary shaft 2141 is expanded. It may include an extended support portion 2143 of.
  • a rolling bearing 216 is disposed at one end of the rotating shaft 2141 so that the rotating shaft 2141 can rotate.
  • An impeller 223 may be fixedly coupled to the other end of the rotation shaft 2141 .
  • the core 2142 is a permanent magnet, and may be rotated by acting on an electromagnetic field formed by a current flowing in the winding coil 2131 of the stator 213 .
  • the extended support part 2143 may be inserted into the foil bearing 217 provided in the second frame 2124 of the second housing ( 212 in FIG. 5 ).
  • the driving circuit board 215 is provided with components for driving the motor unit 210 .
  • the driving circuit board 215 may be positioned on the flange 2112 of the first housing 211 .
  • the driving circuit board 215 may include an opening 2151 into which an end of the bus bar 2134 of the stator 213 is inserted.
  • the driving circuit board 215 may be supported by inserting and soldering the end of the bus bar 2134 into the opening 2151 when the suction motor 21 is assembled.
  • the rolling bearing 216 may be coupled to one end of the rotation shaft 2141 of the rotor 214 .
  • One end of the rotation shaft 2141 of the rotor 214 may be rotated in contact with the rolling bearing 216 .
  • the rolling bearing 216 may include an annular ball housing 2161 and a plurality of balls 2162 inserted into the ball housing 2161 .
  • the outer peripheral surface of the rolling bearing 2161 may be bonded to the inner surface of the hollow 2114 of the reinforcing frame 211b of the first housing 211 shown in FIG. 3 with an adhesive.
  • the fan unit 220 includes a fan cover 221 surrounding the impeller 223 to form an air flow path, and a diffuser 222 coupled to the fan cover 221. , and an impeller 223 coupled to the rotation shaft 2141 of the rotor 214 to rotate together with the rotor 214 .
  • the fan cover 221 may form a flow path for air sucked by the impeller 223 disposed therein.
  • the fan cover 221 may include a first opening 2211 through which air is introduced into the impeller 223 and a second opening 2212 through which air is discharged from the impeller 223 .
  • the fan cover 221 may include a first flow path cover 2213 having a funnel shape and a second flow path cover 2214 having a trumpet shape. A portion where the first flow path cover 2213 and the second flow path cover 2214 are connected is constricted.
  • the first flow path cover 2213 is provided with, for example, three coupling rods 2215 for coupling with the second housing 212 .
  • the coupling rod 2215 may be inserted into and joined to the coupling hole 2126 of the second housing 212 .
  • the fan cover 221 may be integrally formed with the second housing 212 .
  • the diffuser 222 may be coupled to a lower portion of the fan cover 221 .
  • the diffuser 222 may guide the air coming out of the impeller 223 in the fan cover 221 to diffuse and discharge it to the outside.
  • the impeller 223 may be coupled to the rotation shaft 2141 of the rotor 214 to rotate together.
  • the impeller 223 includes a wing support 2231 extending in a trumpet shape at a predetermined distance from the inner surface of the second flow path cover 2214 of the fan cover 221 , and at least one helically extending from the outer surface of the wing support 2231 . It may include a frame receiving portion 2233 for accommodating the second frame 2124 of the wings 2232 and the second housing 212 of the.
  • a gap between the outer surface of the wing support 2231 and the inner surface of the second flow path cover 2214 is a passage through which the air compressed by the impeller 223 flows.
  • At least one wing 2232 has a shape capable of sucking air from the first opening 2211 of the fan cover 221 and compressing it and then discharging it through the second opening 2212 along with rotation of the rotation shaft 2141 in one direction. can have
  • the frame receiving portion 2233 may be depressed toward the lower portion of the impeller 223 .
  • At least a portion of the foil bearing 217 mounted on the second frame 2124 of the second housing 212 may be located inside the impeller 223 and the frame accommodating part 2233 .
  • the foil bearing 217 may be coupled within the second frame 2124 of the second housing 212 .
  • the extended support part 2143 of the rotor 214 may be disposed inside the foil bearing 217 .
  • the foil bearing 217 may include a cylindrical cartridge 2171 , a bumping seat 2172 mounted on the inner surface of the cartridge 2171 , and a foil sheet 2173 in contact with the bumping seat 2172 .
  • the cartridge 2171 may be coupled to the inner surface of the second frame 2124 of the second housing 212 by insert injection.
  • the cartridge 2171 may be omitted and replaced with a second frame 2124 or a cylindrical foil sheet.
  • the bumping sheet 2172 may have a corrugated shape along the circumference and may reduce vibration or noise by alleviating an impact transmitted when the rotation shaft 2141 rotates.
  • the inner diameter of the foil bearing 217 (d F in FIG. 8 ) must be at least greater than or equal to the outer diameter of the core 2142 of the rotor 214 (d R in FIG. 6 ) and the outer diameter of the rolling bearing 216 (d B in FIG. 6 ).
  • FIG. 9 is a view showing the operation of the foil bearing 217 in the stationary state and the rotating state of the rotating shaft 2141.
  • a portion of the outer surface of the extended support part 2143 may be in contact with the inner surface of the foil bearing 217 .
  • the rotor 214 may generate vibration and noise due to a mass imbalance due to the mismatch between the center of mass and the rotation shaft 2141 by coupling the impeller 223 . If the rolling bearing 216 is used, vibration and noise are transmitted to other parts of the motor unit 210 and the parts of the vacuum cleaner 1 through the rolling bearing 216, so that the user may feel uncomfortable. Therefore, when the foil bearing 217 is used, vibration and noise can be reduced because there is no contact.
  • the impeller 223 since the impeller 223 has a large mass imbalance, it is effective to use the foil bearing 217 on the side close to the impeller 223 and the rolling bearing 216 on the opposite side to reduce vibration and noise.
  • the impeller 223 when the impeller 223 is rotated by the rotation of the rotor 214 , air is introduced from the upper portion of the fan cover 221 , that is, from the motor unit 210 side, and the introduced air is transferred to the impeller 223 . ) may be compressed and diffused and discharged to the outside through the diffuser 222 . At this time, the foil bearing 217 may be located upstream of the air flow path formed in the fan cover 221 , that is, between the impeller 223 and the stator 213 .
  • the upstream may be defined as the upper side of the impeller 223 indicated by the dotted line B1 in the flow path in the fan cover 221
  • the downstream may be defined as the lower side of the impeller 223 indicated by the dotted line B2 .
  • the space occupied by the impeller 223, and the upper (upstream) space of the impeller 223 are in a low pressure state close to a vacuum lower than atmospheric pressure, and the reference line ( The space occupied by the diffuser 222 on the lower side (downstream) of B2) may be brought to a state close to atmospheric pressure by diffusion.
  • the motor unit 210 is formed by assembling the driving circuit board 215 , the stator 213 , the impeller 223 , and the diffuser 222 in order around the rotor 214 .
  • the air flow path formed according to the rotation of the impeller 223 may be formed in a direction from the driving circuit board 215 and the stator 213 toward the impeller 223 . Therefore, since the driving circuit board 215 and the stator 213 that generate heat may be disposed upstream of the flow path through which the air before being compressed by the impeller 223 flows, the cooling efficiency of the motor unit 210 is reduced. can be improved
  • FIG. 10 is a view showing a comparison of the air temperature distribution of the suction motor of the prior art and an embodiment.
  • the prior art is to cool the motor unit with air compressed by the impeller
  • an embodiment is to cool the motor unit with air before being compressed by the impeller.
  • the temperature of the motor unit is distributed up to 90 degrees, and in one embodiment, it can be seen that the temperature of the motor unit is 65 degrees and the cooling efficiency is excellent.
  • the cooling efficiency can be increased by cooling the motor unit by the air before flowing into the impeller.
  • FIG. 11 is a flowchart illustrating an assembly process of the suction motor 21 according to an embodiment.
  • step S11 the rolling bearing 216 may be coupled to one end of the rotation shaft 2141 of the rotor 214, and the impeller 223 may be coupled to the other end.
  • step S12 after insert injection or bonding the foil bearing 217 in the second frame 2124 of the second housing 212, the stator 213 between the first housing 211 and the second housing 212 After seating the first housing 211 and the second housing 212 may be combined.
  • step S13 the coupling rod 2215 of the fan cover 221 may be inserted into the coupling hole 2126 of the second housing 212 and then joined.
  • step S14 the rotation shaft 2141 of the rotor 214 may be inserted from the lower portion of the fan cover 221 to pass through the centers of the first and second housings 211 and 212 .
  • the extended support portion 2143 of the rotating shaft 2141 is located in the foil bearing 217 and the rolling bearing 216 may be located in the hollow 2114 of the reinforcing frame 211a of the first housing 211 .
  • step S15 the outer peripheral surface of the rolling bearing 213 may be adhered to the inner surface of the hollow 2114 of the reinforcing frame 211a of the first housing 211.
  • step S16 the diffuser 222 may be coupled to the lower end of the fan cover 221 .
  • step S17 the end of the bus bar 2134 of the stator 213 may be inserted into the opening 2151 of the driving circuit board 215 and then soldered.
  • the impeller 223 is pre-coupled to one end of the rotor 214, so that the impeller 223 is coupled to the rotor 214 to check the mass balance. can be performed and balance correction can be performed.
  • the impeller 223 is pre-coupled to one end of the rotor 214, so that the impeller 223 is coupled to the rotor 214 to check the mass balance. can be performed and balance correction can be performed.
  • by assembling after compensating to match the center of mass and the axis of rotation of the impeller 223, noise and vibration can be reduced.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un aspirateur incluant un moteur d'aspiration. Le moteur d'aspiration comprend : un carter ; un stator supporté de manière fixe sur le carter ; un rotor qui tourne par rapport au stator et qui comporte un arbre de rotation ; un palier à roulement qui supporte de manière rotative un côté de l'arbre de rotation sur le carter ; un palier à feuilles qui supporte de manière rotative l'autre côté de l'arbre de rotation sur le carter ; une turbine couplée à l'autre côté de l'arbre de rotation et comprenant une pale tournant avec le rotor, et un couvercle de ventilateur qui entoure la turbine pour former un trajet d'écoulement d'air. Le palier à feuilles est situé dans le couvercle de ventilateur en amont du trajet d'écoulement.
PCT/KR2021/095125 2021-02-03 2021-12-16 Aspirateur WO2022169110A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020210015406A KR20220111968A (ko) 2021-02-03 2021-02-03 진공청소기
KR10-2021-0015406 2021-02-03

Publications (1)

Publication Number Publication Date
WO2022169110A1 true WO2022169110A1 (fr) 2022-08-11

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ID=82742236

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Application Number Title Priority Date Filing Date
PCT/KR2021/095125 WO2022169110A1 (fr) 2021-02-03 2021-12-16 Aspirateur

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Country Link
KR (1) KR20220111968A (fr)
WO (1) WO2022169110A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20240053473A (ko) * 2022-10-17 2024-04-24 삼성전자주식회사 청소기

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170292524A1 (en) * 2016-04-11 2017-10-12 Borgwarner Inc. Method for securing stator in high speed electric motors
KR101869159B1 (ko) * 2016-09-09 2018-06-19 엘지전자 주식회사 모터
KR20190003259A (ko) * 2017-06-30 2019-01-09 엘지전자 주식회사 팬 모터
KR20190029145A (ko) * 2017-09-12 2019-03-20 이상현 레디얼 포일베어링
KR20200034486A (ko) * 2018-09-21 2020-03-31 엘지전자 주식회사 모터 및 그 제조방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170292524A1 (en) * 2016-04-11 2017-10-12 Borgwarner Inc. Method for securing stator in high speed electric motors
KR101869159B1 (ko) * 2016-09-09 2018-06-19 엘지전자 주식회사 모터
KR20190003259A (ko) * 2017-06-30 2019-01-09 엘지전자 주식회사 팬 모터
KR20190029145A (ko) * 2017-09-12 2019-03-20 이상현 레디얼 포일베어링
KR20200034486A (ko) * 2018-09-21 2020-03-31 엘지전자 주식회사 모터 및 그 제조방법

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KR20220111968A (ko) 2022-08-10

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