WO2022196243A1 - 遠心送風機 - Google Patents
遠心送風機 Download PDFInfo
- Publication number
- WO2022196243A1 WO2022196243A1 PCT/JP2022/006569 JP2022006569W WO2022196243A1 WO 2022196243 A1 WO2022196243 A1 WO 2022196243A1 JP 2022006569 W JP2022006569 W JP 2022006569W WO 2022196243 A1 WO2022196243 A1 WO 2022196243A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- end cap
- motor
- axial direction
- circuit board
- centrifugal fan
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 19
- 230000008878 coupling Effects 0.000 claims description 47
- 238000010168 coupling process Methods 0.000 claims description 47
- 238000005859 coupling reaction Methods 0.000 claims description 47
- 230000007423 decrease Effects 0.000 claims description 2
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
-
- 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
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
-
- 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
- F04D25/068—Mechanical details of the pump control unit
-
- 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
- F04D25/0693—Details or arrangements of the wiring
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- 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
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- 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
- H02K5/15—Mounting arrangements for bearing-shields or end plates
-
- 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
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- 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
- H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
- H02K2211/03—Machines characterised by circuit boards, e.g. pcb
Definitions
- the present invention relates to a centrifugal blower that can easily insulate common wire couplings in a motor that rotates an impeller.
- Centrifugal fans are widely used for air blowing, ventilation, cooling, etc. in home appliances, OA equipment, industrial and vehicle air conditioners (see Patent Document 1, for example).
- the centrifugal blower disclosed in Patent Document 1 includes a casing 10 as shown in FIG. Contained.
- a three-phase brushless motor may be used.
- Delta connection and star connection (Y connection) are known as coil connection methods for brushless motors.
- the coils are connected by a common wire, which is the neutral point, and this common wire must be insulated from other members.
- Patent Document 2 proposes a method that does not use an insulating tube.
- 11 and 12 show a brushless motor having such a common line coupling portion, in which a common line coupling portion fixing groove 6D is formed in an insulating wall portion 6C integrally formed with an insulating cover 2B, The common wire coupling portion 4 is pushed into the common wire coupling portion fixing groove 6D to be fixed.
- An object of the present invention is to provide a centrifugal fan capable of being insulated and capable of reliably maintaining an insulated state of a common line coupling portion.
- the present invention is a centrifugal fan housing an impeller inside a casing, a motor for rotating the impeller, and a circuit board on which a circuit for driving and controlling the motor is mounted, wherein the shaft of the circuit board
- the motor is arranged on one end side in the direction, and an end cap is provided on the other end side in the axial direction of the circuit board.
- the motor is a three-phase brushless motor having a stator, and a three-phase coil is wound around the stator in a star connection to have a common wire coupling portion.
- the common line coupling portion is a centrifugal fan that protrudes from the circuit board toward the other end in the axial direction and is housed in the cylindrical portion of the end cap.
- the common wire coupling portion protrudes from the circuit board toward the other end in the axial direction and is housed in the cylindrical portion of the end cap.
- the common line coupling portion can be insulated from other members, and workability can be improved. Therefore, the common line coupling portion can be easily insulated from other members.
- the common wire coupling portion is surrounded by the cylindrical portion, the insulation state can be reliably maintained.
- the orientation of the cylindrical portion is arbitrary, it is preferable that it extends in the axial direction.
- the common wire coupling portion drawn out from the coil can be moved axially relative to the tubular portion and inserted into the tubular portion without being bent, which further improves workability. can.
- the casing has an upper casing and a lower casing, and an end cap can be attached to the lower casing.
- a flange portion protruding radially outward is formed on the edge portion of the end cap, and the boss portion of the lower casing can be passed through the through hole formed in the flange portion to be crimped and fixed.
- the common wire coupling portion of the motor for rotating the impeller with an insulating tube, and the common wire coupling portion can be easily insulated from other members.
- a centrifugal fan that can reliably maintain the insulation state of the common line.
- FIG. 2 is a sectional view taken along line II-II of FIG. 1;
- FIG. 3 is an enlarged view of a main portion of FIG. 2;
- 4 is an enlarged view of the portion indicated by arrow IV in FIG. 3.
- FIG. It is a perspective view which shows the lower casing of embodiment. 6 is an enlarged view of the portion indicated by arrow VI in FIG. 5;
- FIG. (A) is an enlarged view of the portion indicated by arrow VII in FIG. 5, and (B) is a cross-sectional view taken along line BB of (A).
- FIG. 2 is a cross-sectional view showing a conventional centrifugal fan (Patent Document 1); It is a perspective view showing a stator of a conventional brushless motor (Patent Document 2).
- FIG. 12 is a perspective view showing a main part of FIG. 11;
- FIG. 1 is a rear view of a centrifugal blower 100 of Embodiment 1
- FIG. 2 is a sectional view taken along the line II--II of FIG. 1, and FIG.
- the centrifugal blower 100 includes an inner space on the axial center side and a plurality of blades 121 arranged in an annular portion around the inner space.
- An impeller 120 that exhausts air in a direction
- a spiral-shaped casing 110 that houses the impeller 120 in a rotatable state
- an opening provided at a position facing the inner space of the impeller 120.
- a suction port 114 for introducing air.
- the centrifugal fan 100 includes a casing 110.
- the casing 110 is composed of an upper casing 111 made of resin and a lower casing 112 made of resin.
- claw portions 112a protruding radially outward are formed on the lower edge portion of the outer periphery of the lower casing 112 at regular intervals in the circumferential direction.
- a rectangular frame-shaped engaging portion 111a is formed on the outer periphery of the upper casing 111, and the claw portion 112a is inserted into and engaged with the engaging portion 111a, whereby the upper casing 111 is moved. and the lower casing 112 are connected.
- an impeller 120 having a plurality of blades 121 is housed in a rotatable state.
- FIGS. 2 and 3 are shown upside down. Therefore, terms indicating directions such as “up” and “down” in the following description are used to indicate directions in FIGS.
- a spiral flow path 113 (see FIG. 2) is formed inside the casing 110 .
- the flow path 113 has a structure in which the cross-sectional area gradually increases as the flow path 113 starts at a portion where the gap between the impeller 120 and the casing 110 is the smallest, and progresses in the clockwise circumferential direction from there.
- a discharge port 115 is formed at the end of the flow path 113 . That is, the spiral flow path 113 has a structure in which the cross-sectional area gradually increases toward the discharge port 115 .
- the upper casing 111 has a suction port 114 that opens in the axial direction.
- the axis is the shaft 151 of the impeller 120, and the axial direction is its extending direction.
- the lower casing 112 has fixing legs 116 for attaching and fixing to other devices or housings, and a motor 130 (see FIG. 2) for rotating the impeller 120 is attached.
- reference numeral 116a denotes a metal collar.
- the impeller 120 is fixed to the shaft 151 of the motor 130, and when the motor 130 rotates, the impeller 120 rotates.
- the impeller 120 rotates, air is sucked from the suction port 114 and led to the inside of the impeller 120 (internal space on the shaft center side). This air is blown out from the inside of the impeller 120 in the centrifugal direction by the action of the vanes 121 .
- the air blown out from the impeller 120 flows through the spiral flow path 113 toward the outlet 115 in FIG. 1 and is exhausted from the outlet 115 .
- the impeller 120 includes a cup-shaped hub 122 forming a top surface, a plurality of blades 121 arranged in an axially erect state on an outer annular portion of the hub 122 , and a plurality of blades 121 opposite the hub 122 . and an annular connecting ring 123 connecting the side ends.
- the blades 121 all have the same shape, have forward-facing blade shapes that are recessed with respect to the rotation direction of the impeller 120, and are evenly arranged in the circumferential direction.
- An inner space is provided inside the plurality of blades 121 (on the shaft center side), and when the impeller 120 rotates, air is blown out from this inner space in the centrifugal direction via the blades 121 .
- the hub 122 has a boss portion 124 projecting downward in a convex shape at its center, and a through hole 124a is formed in the boss portion 124.
- a tubular metal (for example, brass) bush 125 is fixed to the inner periphery of the through hole 124 a by insert molding, and a shaft 151 of the motor 130 is press-fitted into the bush 125 , whereby the impeller 120 is attached to the shaft 151 .
- the shaft 151 is the rotating shaft of the motor 130 , and by being coupled with the impeller 120 , it also serves as the rotating shaft of the impeller 120 .
- the hub 122, the plurality of blades 121 and the connecting ring 123 are integrally formed of resin.
- the motor 130 is an inner rotor type three-phase brushless motor, and includes a cup-shaped housing 131 made of a magnetic metal material.
- a stator 140 is arranged on the inner peripheral surface of the housing 131 .
- the stator 140 includes a stator core 141 formed by laminating a predetermined number of cores made of electromagnetic steel sheets, an insulator 142 attached to the stator core 141, a coil 143 wound around the stator core 141 via the insulator 142, and arranged above the insulator 142. and a circuit board 144 .
- the stator core 141 has a plurality of teeth extending radially inward from an annular core back portion. Y connection).
- a rotor 150 is arranged inside the stator core 141 .
- the rotor 150 includes a metal shaft 151 , a cup-shaped rotor yoke 152 coupled to the upper end of the shaft 151 , and a ring-shaped rotor magnet 153 fixed to the outer peripheral surface of the rotor yoke 152 .
- a boss portion 152a is formed at the center of the rotor yoke 152 made of a magnetic metal material, for example, by burring.
- a boss portion 131a is formed in the center of the housing 131, and a bearing holder 132 made of metal (for example, brass) is press-fitted into the boss portion 131a.
- a pair of ball bearings 133 are attached to the bearing holder 132 , and the shaft 151 is rotatably supported by the pair of ball bearings 133 .
- a compression coil spring 134 is interposed between the pair of ball bearings 133 and applies preload to the ball bearings 133 by urging the outer rings of the ball bearings 133 .
- a plurality of flange portions 131b extending radially outward are formed at equal intervals in the circumferential direction on the periphery of the opening of the housing 131.
- a long through hole 131c is formed in each flange portion 131b along the circumferential direction. This through hole 131c is used for joining with the lower casing 112, which will be described later.
- a circuit board 144 on which a circuit for driving and controlling the motor 130 is mounted is arranged above the stator core 141 in the axial direction. Terminals of the U-phase, V-phase, and W-phase coils wound around the stator core 141 are inserted into through-holes (not shown) connected to wiring patterns formed on the mounting surface of the circuit board 144 and soldered. 145 (see FIG. 5).
- the surface appearing in FIG. 5 is the mounting surface of the circuit board 144 .
- the other terminals of the U-phase, V-phase, and W-phase coils 143 are bundled, twisted, and soldered to form a common wire coupling portion 143a (see FIG. 7). It is accommodated in a pocket portion (cylindrical portion) 163 formed in an end cap 160 arranged axially above 131 .
- FIG. 7 and 8 are views showing the end cap 160.
- the end cap 160 includes an outer annular portion 161 and an inner annular portion 162 disposed inside the outer annular portion 161 with a gap 161a therebetween.
- a pocket portion 163 protruding radially inward is formed on the inner peripheral surface of the inner annular portion 162 .
- the pocket portion 163 has a cylindrical shape with a substantially semicircular cross-sectional shape and is open at both ends. 9 is a rear view of the end cap 160.
- FIG. 7B a substantially semicircular notch 144a matching the shape of the pocket portion 163 is formed in the outer peripheral edge of the circuit board 144, and the lower end portion of the pocket portion 163 housed inside.
- a common coupling portion 143 a of each phase coil protrudes axially from a notch 144 a of the circuit board 144 and is inserted into the pocket portion 163 . The tips of the respective coil terminals are soldered to each other at the common coupling portion 143a.
- a plurality of (four in this example) flange portions 164 protruding radially outward are formed on the outer peripheral surface of the outer annular portion 161 of the end cap 160 at regular intervals in the circumferential direction.
- a through-hole 164a elongated in the circumferential direction is formed in the portion 164 .
- a plurality of (five in this example) frames 165 are formed on the outer peripheral surface of the outer annular portion 161 of the end cap 160 so as to protrude radially outward.
- the frame 165 has a rectangular shape in a plan view and penetrates in the axial direction.
- the frame 165 is for mounting a cover 170 which will be described later.
- a connector housing 166 is integrally formed with the end cap 160 .
- a connector pin 167 is integrally formed with the connector housing 166 by insert molding.
- the connector pin 167 has a crank shape, and one end thereof is passed through a through hole (not shown) formed in the circuit board 144 and soldered on the non-mounting surface (the back surface of the circuit board 144 in FIG. 7A). ing.
- the other end of connector pin 167 protrudes into the inner space of connector housing 166 and is connected to a socket inserted into connector housing 166 .
- connection terminals 168 are integrally formed with the end cap 160 by insert molding at the flange portion 164 of the end cap 160 .
- the connection terminal 168 has an L-shape, and one end portion (see FIG. 8) having an angular cross section is passed through a through hole (not shown) formed in the circuit board 144 and soldered on the non-mounting surface. .
- the through holes are connected to a GND pattern (solid pattern) formed on the circuit board 144 .
- connection terminal 168 is exposed on the lower surface of the flange portion 164 of the end cap 160, and is sandwiched between the lower surface of the flange portion 164 and the upper surface of the flange portion 131b of the housing 131.
- the GND pattern of the circuit board 144 is set to the reference potential (for example, zero volt).
- the lower casing 112 is formed with a boss portion 112b projecting upward in the figure.
- the boss portion 112b protrudes upward through a through hole 131c formed in the flange portion 131b of the housing 131 and a through hole 164a formed in the flange portion 164 of the end cap 160.
- a head 112c for pressing 164 is formed. This configuration couples the end cap 160 to the lower casing 112 .
- a cover 170 made of resin is attached to the end cap 160 to prevent dust, foreign matter, etc. from entering the motor 130 .
- the cover 170 has a substantially circular cup shape, and its peripheral edge portion 171 extends in the axial direction.
- An end portion of the peripheral portion 171 is a tapered portion 171a whose thickness gradually decreases downward.
- the cover 170 is detachably attached to the end cap 160 by pushing the tapered portion 171 a into the gap 161 a between the outer annular portion 161 and the inner annular portion 162 of the end cap 160 .
- a plurality of (five in this example) protrusions 172 projecting radially outward are formed on the outer peripheral surface of the peripheral portion 171 of the cover 170 (see FIG. 1).
- the protrusion 172 is fitted to a frame 165 formed on the end cap 160 to prevent the cover 170 from rotating.
- the terminals of the U-phase, V-phase, and W-phase are inserted into predetermined through-holes from the side opposite to the mounting surface of the circuit board 144, and the common line coupling portion 143a extends from the notch 144a formed in the outer peripheral edge of the circuit board 144. It is housed in a pocket portion 163 formed on the inner peripheral surface of the end cap 160 so as to protrude toward the mounting surface.
- the above operation is performed by bringing the end cap 160 coupled with the circuit board 144 and the housing 131 of the motor 130 closer to each other. Then, the ends of the U-phase, V-phase, and W-phase terminals protruding toward the mounting surface are connected with solder 145 (see FIGS. 5 and 7). As a result, the connection terminal 168 inserted into the end cap 160 contacts the flange portion 131 b of the housing 131 of the motor 130 .
- connection terminal 168 is sandwiched between the end cap 160 and the flange portion 131b of the housing 131 of the motor 130, and is brought into close contact with the flange portion 131b of the housing 131 of the motor 130. .
- the impeller 120 is inserted into the lower opening of the lower casing 112 , and the lower end of the shaft 151 is press-fitted into the block 125 of the impeller 120 .
- the cover 170 is attached to the end cap 160 by press-fitting the tapered portion 171a of the peripheral portion 171 of the cover 170 into the gap 161a between the outer annular portion 161 and the inner annular portion 162 of the end cap 160 . Further, the claw portions 112a of the lower casing 112 are inserted into and engaged with the engaging portions 111a of the upper casing 111, thereby coupling the upper casing 111 and the lower casing 112 together.
- the common wire coupling portion 143a protrudes axially upward from the circuit board 144 and is housed in the pocket portion 163 of the end cap 160. Needless to say, there is no need to cover the common wire coupling portion 143a, and simply inserting the common wire coupling portion 143a into the pocket portion 163 can insulate the common wire coupling portion 143a from other members, thereby improving workability. Therefore, the common line coupling portion 143a can be easily insulated from other members. In addition, since the periphery of the common line coupling portion 143a is surrounded by the pocket portion 163, the insulation state can be reliably maintained.
- the common wire coupling portion 143a is extended in the axial direction without being bent, and the common wire coupling portion 143a is positioned relative to the pocket portion 163. It can be moved in the axial direction and inserted into the pocket portion 163, and workability can be further improved.
- a boss portion protruding downward is formed on the flange portion 164 of the end cap 160, the boss portion is inserted into the through hole 131c formed in the flange portion 131b of the housing 131 of the motor 130, and the boss portion protrudes from the through hole 131c. can be fixed by caulking by heating and plastically deforming the tip of the .
- the flange portion 131b of the housing 131 can be press-fitted into the inner peripheral surface of the end cap 160 to be fitted.
- the pocket portion 163 may be inclined or perpendicular to the axial direction.
- the upper end opening of the pocket portion 163 can be closed with a lid.
- the present invention can be used for home electric appliances, OA equipment, and centrifugal fans used for blowing, ventilation, cooling, etc. in industrial and vehicle air conditioners.
- DESCRIPTION OF SYMBOLS 100 Centrifugal blower, 110... Casing, 111... Upper casing, 111a... Engagement part, 112... Lower casing, 112a... Claw part, 112b... Boss part, 112c... Head, 113... Flow path, 114... Suction port, DESCRIPTION OF SYMBOLS 115... Discharge port, 116... Fixed leg, 116a... Collar, 120... Impeller, 121... Blade, 122... Hub, 123... Connection ring, 124... Boss portion, 124a... Through hole, 125... Bush, 130...
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Windings For Motors And Generators (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
図1は実施例1の遠心送風機100の裏面図、図2は図1のII-II線断面図、図3は図2の要部拡大図である。遠心送風機100は、軸中心側の内側空間と該内側空間の周囲の環状の部分に配置された複数の羽根121を備え、回転することで前記内側空間から複数の羽根121の間を介して遠心方向に排気を行うインペラ120と、インペラ120を回転自在な状態で内側に納めた渦巻き形状のケーシング110と、インペラ120の内側空間を臨む位置に設けられた開口であり、インペラ120の内側空間に空気を導く吸込口114とを備えている。
モータ130は、インナーロータ型の3相ブラシレスモータで、磁性の金属材料からなるカップ状のハウジング131を備えている。ハウジング131の内周面には、ステータ140が配置されている。ステータ140は、電磁鋼板からなるコアを所定枚数積層したステータコア141と、ステータコア141に装着したインシュレータ142と、インシュレータ142を介してステータコア141に巻回したコイル143と、インシュレータ142の上方に配置された回路基板144とを備えている。ステータコア141は環状のコアバック部から径方向内側に延在する複数のティースを有し、ティースにはインシュレータ142を介して3相(U相、V相、W相)のコイル143がスター結線(Y結線)にて巻回されている。
ハウジング131の軸方向上側には、樹脂製のエンドキャップ160が装着されている。図7および図8はエンドキャップ160を示す図である。エンドキャップ160は、外側環状部161と、外側環状部161の内側に隙間161aを空けて配置された内側環状部162とを備えている。内側環状部162の内周面には、半径方向内側に突出するポケット部163が形成されている。
i)回路基板とエンドキャップの結合
図8に示す複数のコネクタピン167の角状の下端部をそれぞれ回路基板144の実装面側から貫通孔に挿入し、回路基板144の反実装面から突出したそれぞれのコネクタピン167の先端を半田で接続する。また、接続端子168の角状の下端部を回路基板144に形成されGNDパターンに接続されている貫通孔に挿入し、回路基板144の反実装面から突出した接続端子の先端を半田で接続する。これにより、エンドキャップ160と回路基板144とが結合される。
モータ130のステータ140に巻回した3相コイルのU相、V相、W相それぞれの端末を束ねて撚り合わせてコモン線結合部143aとする。このコモン線結合部143aを互いに半田接合し、所定の長さに切断する。この半田接合したコモン線結合部143aを軸方向に平行になるように折り曲げて直立させる。また、各相のコイルの端末も、軸方向に平行になるように折り曲げて直立させる。
エンドキャップ160及び回路基板144が結合されたモータ130を、下ケーシング112の上側の開口に上方から挿入する。このとき、下ケーシング112の開口の周囲に形成したボス部112bをモータ130のハウジング131のフランジ部131bに形成した貫通孔131cとエンドキャップ160のフランジ部164に形成した貫通孔164aに挿通する。
下ケーシング112の下側の開口にインペラ120を挿入し、インペラ120のブロック125にシャフト151の下端部を圧入する。
エンドキャップ160の外側環状部161および内側環状部162の間の隙間161aにカバー170の周縁部171のテーパ部171aを圧入し、カバー170をエンドキャップ160に取り付ける。また、下ケーシング112の爪部112aを上ケーシング111の係合部111aに挿入して係合し、上ケーシング111と下ケーシング112とを結合する。
上記構成の遠心送風機100によれば、コモン線結合部143aが回路基板144から軸方向上側に突出して、エンドキャップ160のポケット部163に収容されているから、コモン線結合部143aにチューブを被せる必要がないことは勿論のこと、コモン線結合部143aをポケット部163に挿入するだけでコモン線結合部143aを他の部材から絶縁することができ、作業性を向上させることができる。したがって、コモン線結合部143aを他の部材から容易に絶縁することができる。また、コモン線結合部143aの周囲がポケット部163によって囲まれるので、絶縁状態を確実に維持することができる。
本発明は上記実施形態に限定されるものではなく以下のように種々の変更が可能である。
i)エンドキャップ160のフランジ部164に下方へ突出するボス部を形成し、モータ130のハウジング131のフランジ部131bに形成した貫通孔131cにボス部を挿入し、貫通孔131cから突出したボス部の先端を加熱して塑性変形させてカシメ固着することができる。
ii)ハウジング131のフランジ部131bをエンドキャップ160の内周面に圧入して嵌着させることができる。
iii)ポケット部163は軸方向に対して傾斜ないし直交していてもよい。
iv)ポケット部163の上端開口を蓋で閉塞することができる。
Claims (9)
- ケーシングの内側にインペラと、前記インペラを回転するためのモータと、前記モータを駆動制御するための回路を搭載した回路基板と、を収容した遠心送風機であって、
前記回路基板の軸方向一端部側に前記モータを配置し、前記回路基板の軸方向他端部側にエンドキャップを設け、
前記エンドキャップは、軸方向に延在する環状部と、前記環状部の内周面から径方向内側に突出する筒状部を備え、
前記モータはステータを有する3相ブラシレスモータであり、前記ステータには3相のコイルがスター結線で巻回されてコモン線結合部を有し、
前記コモン線結合部は前記回路基板から前記軸方向他端部側に突出して、前記エンドキャップの前記筒状部に収容されている遠心送風機。 - 前記筒状部は軸方向に延在し、前記コモン線結合部は軸方向に延在して収容されている請求項1に記載の遠心送風機。
- 前記ケーシングは上ケーシングと下ケーシングを有し、
前記エンドキャップは前記下ケーシングに取り付けられている請求項1または2に記載の遠心送風機。 - 前記エンドキャップの前記環状部は、外側環状部と、該外側環状部の内側に隙間を空けて設けられた内側環状部とを備え、前記筒状部は前記内側環状部に設けられている請求項1乃至3のいずれかに記載の遠心送風機。
- 前記外側環状部は、径方向外側に突出する複数のフランジ部を備え、前記フランジ部は貫通孔を備え、前記下ケーシングは、前記軸方向他端部側へ突出するボス部を備え、前記ボス部は、前記貫通孔から突出して該貫通孔の縁部にかしめ固定されている請求項4に記載の遠心送風機。
- 前記エンドキャップには、前記環状部の内側を閉塞するカバーが装着され、前記外側環状部は、径方向外側へ突出する複数の枠体を備え、前記カバーは、径方向外側に突出して前記枠体に嵌合する突起を備えている請求項1乃至5のいずれかに記載の遠心送風機。
- 前記カバーの周縁部は前記軸方向一端部側へ突出し、前記周縁部は前記軸方向一端部側へ向かうに従って厚さが漸次減少するテーパ部とされ、前記テーパ部を前記隙間に差し込むことで前記カバーは前記エンドキャップに着脱自在に取り付けられている請求項4および6に記載の遠心送風機。
- 前記回路基板は切欠を備え、前記コモン線結合部は前記切欠を通して前記筒状部に突出している請求項1乃至7のいずれかに記載の遠心送風機。
- 前記切欠に、前記筒状部の前記軸方向一端部側の端部が収容されている請求項8に記載の遠心送風機。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/260,651 US20240060498A1 (en) | 2021-03-18 | 2022-02-18 | Centrifugal blower |
CN202280019553.4A CN116941161A (zh) | 2021-03-18 | 2022-02-18 | 离心送风机 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021044393A JP2022143720A (ja) | 2021-03-18 | 2021-03-18 | 遠心送風機 |
JP2021-044393 | 2021-03-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022196243A1 true WO2022196243A1 (ja) | 2022-09-22 |
Family
ID=83322293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/006569 WO2022196243A1 (ja) | 2021-03-18 | 2022-02-18 | 遠心送風機 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20240060498A1 (ja) |
JP (1) | JP2022143720A (ja) |
CN (1) | CN116941161A (ja) |
WO (1) | WO2022196243A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003230257A (ja) * | 2001-11-30 | 2003-08-15 | Sanko Kiki Co Ltd | ステータコアへの巻線方法 |
JP2014090572A (ja) * | 2012-10-30 | 2014-05-15 | Toshiba Corp | モータ、コンプレッサ及び洗濯機 |
JP2016135076A (ja) * | 2015-01-22 | 2016-07-25 | ミネベア株式会社 | スピンドルモータ |
JP2018200048A (ja) * | 2017-05-26 | 2018-12-20 | ミネベアミツミ株式会社 | 遠心ファン |
US20190334393A1 (en) * | 2016-12-22 | 2019-10-31 | Amotech Co., Ltd. | Stack-type stator using multi-layer substrate, slim motor using same, and blower for air purification system |
-
2021
- 2021-03-18 JP JP2021044393A patent/JP2022143720A/ja active Pending
-
2022
- 2022-02-18 US US18/260,651 patent/US20240060498A1/en active Pending
- 2022-02-18 CN CN202280019553.4A patent/CN116941161A/zh active Pending
- 2022-02-18 WO PCT/JP2022/006569 patent/WO2022196243A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003230257A (ja) * | 2001-11-30 | 2003-08-15 | Sanko Kiki Co Ltd | ステータコアへの巻線方法 |
JP2014090572A (ja) * | 2012-10-30 | 2014-05-15 | Toshiba Corp | モータ、コンプレッサ及び洗濯機 |
JP2016135076A (ja) * | 2015-01-22 | 2016-07-25 | ミネベア株式会社 | スピンドルモータ |
US20190334393A1 (en) * | 2016-12-22 | 2019-10-31 | Amotech Co., Ltd. | Stack-type stator using multi-layer substrate, slim motor using same, and blower for air purification system |
JP2018200048A (ja) * | 2017-05-26 | 2018-12-20 | ミネベアミツミ株式会社 | 遠心ファン |
Also Published As
Publication number | Publication date |
---|---|
JP2022143720A (ja) | 2022-10-03 |
US20240060498A1 (en) | 2024-02-22 |
CN116941161A (zh) | 2023-10-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10914317B2 (en) | Centrifugal fan | |
JP5360473B2 (ja) | モータおよびそれを用いた送風ファン | |
JP2749506B2 (ja) | 電子部品冷却装置 | |
JP6647407B2 (ja) | 電動機および空気調和装置 | |
US20070286753A1 (en) | Electric motor | |
TWI638504B (zh) | 風扇馬達、串聯型風扇馬達及其裝配方法 | |
WO2018008058A1 (ja) | 電動機および空気調和装置 | |
JP2008532463A (ja) | ミニ送風機 | |
US11881747B2 (en) | Motor | |
WO2022196243A1 (ja) | 遠心送風機 | |
CN108953181B (zh) | 离心风扇 | |
JP2019022327A (ja) | 空調用ブロアモータユニット | |
TWI776366B (zh) | 風扇馬達 | |
JP5925330B2 (ja) | 電動機、空気調和機、及び電動機の製造方法 | |
WO2022249662A1 (ja) | 遠心送風機 | |
JP4045389B2 (ja) | ブラシレスモータ、その製造方法およびブラシレスモータを用いた燃料ポンプ | |
JP2022143722A (ja) | 遠心送風機 | |
JP2000209809A (ja) | 軸流ファンモ―タ | |
JP4498358B2 (ja) | 電動機及びそれを備えた電動送風機 | |
JP7499123B2 (ja) | 遠心ファン | |
JP6843627B2 (ja) | ファン装置およびその製造方法 | |
JP6669489B2 (ja) | 遠心ファン | |
CN110323878A (zh) | 电动机 | |
JP2018155188A (ja) | 遠心ファン | |
JP2020088982A (ja) | ステータ、モータ、および、送風装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22771002 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18260651 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280019553.4 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 22771002 Country of ref document: EP Kind code of ref document: A1 |