JP2019011871A - Fan unit and outdoor equipment - Google Patents

Abstract

To provide a structure which can prevent entry of water droplets into a motor while achieving a thickness reduction of outdoor equipment.SOLUTION: A fan unit 12 is used in outdoor equipment 1 of an air conditioner and has: a motor 2; an impeller 3 which rotates by power of the motor 2; and a panel 4 disposed in front of the impeller 3 and having multiple open holes 44 which allow airflow generated by rotation of the impeller 3 to pass. The motor 2 has: a stationary part 21 having a stator 212; and a rotation part 22 having a magnet 223 positioned at a radial outer side of the stator 212. The stationary part 21 is fixed to the panel 4. The stationary part 21 or the panel 4 has an annular groove part which is formed with its center set to a center axis 9. The rotation part 22 has an annular end part which is formed with its center set to the center axis 9. Arranging the annular end part in the annular groove part extends a water droplet entry path leading to the interior of the motor 2. Thus, the structure can inhibit adhesion of water droplets to the stator 212 while fixing the motor 2 to the panel 4.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a fan unit used for an outdoor unit of an air conditioner and an outdoor unit of the air conditioner.

  Conventionally, an outdoor unit of an air conditioner has a housing having an intake port and an exhaust port, a fan motor disposed between the intake port and the exhaust port, a heat exchanger attached to the intake port, and an exhaust port. And an attached panel. The structure of a conventional outdoor unit is described in, for example, Japanese Patent Application Laid-Open No. 09-159216.

In a general outdoor unit, a fan motor support called a motor bracket or a motor stay is used to fix the fan motor to the housing. Japanese Patent Application Laid-Open No. 09-159216 discloses an outdoor unit in which such a fan motor support is arranged on the downstream side or the upstream side of the fan motor impeller (FIGS. 1A and 2).
JP 09-159216 A

  On the other hand, in recent years, there is a demand for thinner outdoor units. When the fan motor is fixed to the housing using the fan motor support, a space for disposing the fan motor support is required between the impeller of the fan motor and the exhaust port or the intake port. Therefore, it is difficult to further reduce the thickness of the outdoor unit.

  As a method for further reducing the thickness of the outdoor unit, a method in which the fan motor support is omitted and the fan motor is fixed to the panel is conceivable. However, outdoor units are generally installed outdoors. For this reason, if a fan motor is fixed to a panel, it will become easy to expose a fan motor to rain wind. Therefore, water droplets easily enter the fan motor.

  An object of the present invention is to provide a structure that can prevent water droplets from entering the motor while reducing the thickness of the outdoor unit.

  An exemplary first invention of the present application is a fan unit used in an outdoor unit of an air conditioner, and includes a motor, an impeller that rotates around a central axis that extends forward and backward by the power of the motor, and a front of the impeller. And a panel having a plurality of through holes that allow airflow generated by rotation of the impeller to pass therethrough, and the motor has a stationary portion having a stator and a magnet positioned radially outward from the stator. A rotating part, wherein the stationary part is fixed to the panel, the stationary part or the panel has an annular groove part centered on the central axis, and the rotating part is centered on the central axis The annular end portion is arranged in the annular groove portion.

  Illustratively, the second invention of the present application is a fan unit used in an outdoor unit of an air conditioner, and includes a motor, an impeller that rotates around a central axis that extends forward and backward by the power of the motor, and a front of the impeller. And a panel having a plurality of through holes that allow airflow generated by rotation of the impeller to pass therethrough, and the motor has a stationary portion having a stator and a magnet positioned radially outward from the stator. A rotating part, and the stationary part is fixed to the panel, the stationary part or the panel has an annular convex part centered on the central axis, and the rotating part has the central axis It has an annular groove part as a center, and the annular convex part is arranged in the annular groove part.

  According to the exemplary first invention of the present application, the labyrinth structure is formed by the annular groove portion and the annular end portion. Thereby, the infiltration route of water drops becomes long. Therefore, the motor can be fixed to the panel and adhesion of water droplets to the stator can be suppressed.

  According to the exemplary second invention of the present application, the labyrinth structure is formed by the annular groove portion and the annular convex portion. Thereby, the infiltration route of water drops becomes long. Therefore, the motor can be fixed to the panel and adhesion of water droplets to the stator can be suppressed.

FIG. 1 is a perspective view of the outdoor unit. FIG. 2 is a longitudinal sectional view of the outdoor unit. FIG. 3 is a front view of the panel. FIG. 4 is a rear view of the panel. FIG. 5 is a partial cross-sectional view of the panel. FIG. 6 is a partial cross-sectional view of a fan unit according to a modification. FIG. 7 is a partial cross-sectional view of a fan unit according to a modification.

  Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings. In the following description, the front-rear direction is defined with the rear side of the outdoor unit as “rear” and the exhaust side as “front”. In FIG. 1, FIG. 2 and FIG. 5, the front and rear directions are indicated by arrows, with “F” for the front and “B” for the rear.

<1. Configuration of outdoor unit>
FIG. 1 is a perspective view of an outdoor unit 1 according to an embodiment. FIG. 2 is a longitudinal sectional view of the outdoor unit 1. The outdoor unit 1 is an outdoor unit of an air conditioner, is used together with the indoor unit of the air conditioner, and is used for releasing indoor heat to the outside through the indoor unit.

  The outdoor unit 1 includes a housing 11, a fan unit 12, a heat exchanger 13, a power source 14, and a compressor not shown. The housing | casing 11 is a substantially rectangular parallelepiped housing | casing which accommodates the heat exchanger 13 and the impeller 3 mentioned later inside. The housing 11 has an exhaust port 111 on the front surface, that is, the front surface, and an intake port 112 on the rear surface, that is, the back surface.

  The fan unit 12 includes a motor 2, an impeller 3, and a panel 4. The impeller 3 is rotated around the central axis 9 extending in the front-rear direction by the power of the motor 2. The panel 4 covers the exhaust port 111. The panel 4 has a plurality of through holes 44 through which airflow generated by the rotation of the impeller 3 passes. The heat exchanger 13 is disposed at the intake port 112. The power supply 14 is a device that supplies a drive current to the motor 2. The power supply 14 and the motor 2 are electrically connected via a lead wire 15. In FIG. 1, the power supply 14 and the lead wire 15 are indicated by broken lines.

  When the motor 2 is driven, the impeller 3 rotates, and an airflow from the rear to the front is generated. Thereby, outside air is sucked into the housing 11 through the air inlet 112 and passes through the heat exchanger 13. The outside air is heated or cooled by exchanging heat with the refrigerant circulating in the heat transfer tube of the heat exchanger 13 and then discharged outside through the exhaust port 111.

<2. Configuration of fan unit>
Next, the configuration of the fan unit 12 will be described with reference to FIGS. FIG. 3 is a front view of the panel 4 of the fan unit 12 used in the outdoor unit 1. FIG. 4 is a rear view of the panel 4. FIG. 5 is a partial cross-sectional view of the panel 4 along the line AA ′ in FIGS. 3 and 4. As described above, the fan unit 12 includes the motor 2, the impeller 3, and the panel 4.

  The motor 2 has a stationary part 21 and a rotating part 22. The stationary part 21 has a base part 211 and a stator 212. The rotating part 22 is supported by the stationary part 21 so as to be rotatable around the central axis 9 extending in the front-rear direction. The rotating unit 22 includes a shaft 221, a rotor cup 222, and a magnet 223.

  The base portion 211 includes a first fixing portion 51 that is fixed to a center portion 41 (described later) of the panel 4 and a substantially cylindrical second fixing portion 52 that extends rearward from the first fixing portion 51. The first fixing portion 51 extends perpendicular to the axial direction. Two bearing mechanisms 521 are provided on the inner peripheral portion of the second fixed portion 52. A part of the shaft 221 is housed inside the second fixing portion 52 in the radial direction, and is supported rotatably with respect to the second fixing portion 52 via the bearing mechanism 521. The bearing mechanism 521 of the present embodiment is a ball bearing having an outer ring fixed to the inner peripheral surface of the second fixing portion 52 and an inner ring fixed to the outer peripheral surface of the shaft 221. However, instead of the ball bearing, another type of bearing such as a sleeve bearing may be used.

  The stator 212 has a stator core 53 and a coil 54. The stator core 53 is made of a laminated steel plate in which electromagnetic steel plates such as silicon steel plates are laminated in the axial direction, for example. The stator core 53 is fixed to the outer peripheral surface of the second fixing portion 52. The stator core 53 has a plurality of teeth 531 protruding outward in the radial direction. The plurality of teeth 531 are arranged at substantially equal intervals in the circumferential direction. The coil 54 is configured by a conductive wire wound around each tooth 531.

  The shaft 221 is a substantially columnar member extending in the axial direction. A part including the front end of the shaft 221 is disposed inside the second fixing portion 52 of the base portion 211 in the radial direction. The rear end of the shaft 221 protrudes rearward from the rear end of the second fixing portion 52.

  The rotor cup 222 has a disc part 61 and a cylindrical part 62. The disc portion 61 is a plate-like portion that extends in the radial direction from the outer peripheral portion of the shaft 221. The vicinity of the rear end of the shaft 221 is fixed to the radially inner end of the disc portion 61. The cylindrical portion 62 is a substantially cylindrical portion that extends in the axial direction from the outer peripheral portion of the disc portion 61. The cylindrical portion 62 is located on the radially outer side of the magnet 223 and on the radially inner side of the impeller 3.

  The magnet 223 is a substantially annular magnet located on the radially outer side than the stator 212. The inner peripheral surface of the magnet 223 is opposed to the radially outer end surfaces of the plurality of teeth 531 in the radial direction. Further, N poles and S poles are alternately magnetized in the circumferential direction on the inner peripheral surface of the magnet 223.

  In place of the annular magnet 223, a plurality of magnets may be used. When a plurality of magnets are used, the plurality of magnets may be arranged in the circumferential direction so that the N poles and the S poles are alternately arranged. Further, the cylindrical portion may be formed of a plastic magnet.

  The impeller 3 has a plurality of blades 31 extending radially outward from the outer peripheral surface of the cylindrical portion 62 of the rotor cup 222. The impeller 3 is disposed in front of the heat exchanger 13 and in the rear of the panel 4. When the motor 2 is driven, the impeller 3 rotates around the central axis 9. Thereby, the airflow toward the front is generated.

  The panel 4 is disposed at the exhaust port 111 of the housing 11. That is, the panel 4 is disposed perpendicular to the horizontal plane in front of the impeller 3. The panel 4 has a plurality of through holes 44 through which airflow generated by the rotation of the impeller 3 passes. The panel 4 prevents a user's finger from coming into contact with the impeller as a finger guard and prevents foreign matter from entering the housing 11 from the outside via the exhaust port 111. The panel 4 includes a central portion 41, a frame portion 42, a ventilation portion 43, and one rib 60.

  The central part 41 is a part that supports the stationary part 21 of the motor 2. Specifically, the base portion 211 is fixed to the central portion 41 by fitting the first fixing portion 51 of the base portion 211 into a recess provided on the back surface of the central portion 41.

  The frame portion 42 is a substantially annular portion disposed along the edge portion of the exhaust port 111 on the radially outer side of the central portion 41.

  The ventilation portion 43 is a substantially annular portion that extends radially outward of the central portion 41 and radially inward of the frame portion 42. The ventilation part 43 is provided with a plurality of through holes 44.

  As shown in FIGS. 3 and 4, in this embodiment, the shape of the through hole 44 viewed in the axial direction is a regular hexagon except for the through hole 44 adjacent to the center part 41 and the frame part 42. Thus, the rigidity of panel 4 can be improved because the shape of through-hole 44 is a polygon. Furthermore, when the shape of the through hole 44 is a regular hexagon, the rigidity of the panel 4 can be further improved.

  In the present embodiment, the ventilation portion 43 is formed by a partition portion 431 that extends perpendicularly to the axial direction and has a thickness in the axial direction. For this reason, the regular hexagonal through-hole 44 is formed by connecting the partition portions 431 in a honeycomb shape.

  The rib 60 extends from the outer peripheral portion of the central portion 41 toward the radially outer side. The width of the rib 60 in the circumferential direction is larger than the width of the other portion of the ventilation portion 43 viewed in the axial direction. That is, the circumferential width of the rib 60 is larger than the width of the partition portion 431. The width of the partition portion 431 here refers to the width in the direction perpendicular to the axial direction and perpendicular to the direction in which the partition portion 431 extends.

  In the present embodiment, the front end portion of the rib 60 has substantially the same axial position as the front end portion of the other portion of the ventilation portion 43. Further, the rear end portion of the rib 60 has substantially the same axial position as the rear end portion of the other part of the ventilation portion 43. That is, the rib 60 does not protrude in the axial direction from the other portions of the ventilation portion 43.

  When the panel 4 supports the motor 2, vibration during driving is easily transmitted from the motor 2 to the panel 4. However, in the fan unit 12, the panel 4 has the rib 60, so that the rigidity of the panel 4 is improved. Thereby, the vibration of the panel 4 at the time of the drive of the motor 2 can be suppressed. As a result, the deformation of the panel 4 can be suppressed.

  In the present embodiment, the through hole 44 is provided only in the ventilation portion 43. That is, the through hole 44 is provided in a region of the panel 4 excluding the central portion 41. In this way, a decrease in rigidity due to the through hole 44 is suppressed in the central portion 41 where the motor 2 is attached. Therefore, the motor 2 can be firmly fixed to the panel 4.

  Note that the panel 4 of the present embodiment is integrally formed of plastic. Therefore, the center part 41, the frame part 42, the ventilation part 43, and the rib 60 are integrally molded. However, the present invention is not limited to this. For example, the ventilation part may be a wire mesh formed of a wire-like metal. The rib 60 may be a separate member from the central portion 41, the frame portion 42, and the ventilation portion 43.

  In this embodiment, the outdoor unit 1 has a lead wire 15 that extends from the motor 2 and is connected to the power source 14. The stationary portion 21 of the motor 2 has a lead wire holding portion 213 that holds the lead wire 15. The lead wire holding part 213 is formed integrally with the base part 211. In FIG. 4, the outer peripheral surface of the rotor cup 222 of the motor 2, the lead wire holding portion 213, and a part of the lead wire 15 are indicated by broken lines.

  As shown in FIG. 4, the rib 60 has a holding groove 600 that is recessed forward from the rear end surface. The holding groove 600 extends along the direction in which the rib 60 extends. The holding groove 600 holds the lead wire 15 therein. Accordingly, a part of the lead wire 15 extending radially outward from the motor 2 via the lead wire holding portion 213 is disposed along the rib 60.

  By arranging the lead wire 15 along the rib 60, the lead wire 15 is prevented from overlapping the through hole 44 in the axial direction. Therefore, it is possible to suppress a decrease in the amount of air blown by the lead wire 15. Further, since the lead wire 15 is held in the holding groove 600, the positional deviation of the lead wire 15 can be suppressed. Furthermore, it can also be suppressed that the lead wire 15 contacts the impeller 3.

  Note that the rib 60 may not have the holding groove 600. For example, a snap-fit type fixing protrusion may be provided on the back side of the rib 60 and the lead wire 15 may be fixed by the fixing protrusion. Further, the lead wire 15 may be fixed to the back side of the rib 60 by other methods.

  As shown in FIG. 5, in the ventilation part 43, the partition part 431 which forms the through-hole 44 has the taper surface 432 on the back side. Thereby, the thickness of the vicinity of the rear end portion of the partition portion 431 decreases as it goes rearward. Therefore, when the wind generated by the impeller 3 reaches the rear end of the partition portion 431 of the ventilation portion 43, the wind is guided by the tapered surface 432 toward the through hole 44. As a result, the generation of noise due to the collision of the wind generated by the impeller 3 with the partition portion 431 is suppressed.

<3. About labyrinth structure>
The fan unit 12 has a labyrinth structure 70 for suppressing water droplets from entering the motor 2. Below, the said labyrinth structure 70 of the fan unit 12 is demonstrated.

  FIG. 6 is a partial cross-sectional view of the fan unit 12. As shown in FIG. 6, in this embodiment, the base portion 211 belonging to the stationary portion 21 has an annular groove portion 214 that is recessed in an annular shape around the central axis 9. The annular groove 214 is recessed from the rear surface of the first fixed portion 51 toward the front in the axial direction. The cylindrical portion 62 of the rotor cup 222 belonging to the rotating portion 22 has an annular end portion 224 centered on the central axis 9 at the front end in the axial direction. The annular end 224 is disposed in the annular groove 214 over the entire circumference. A gap 71 is provided between the annular groove 214 and the annular end 224. For this reason, the rotor cup 222 rotates smoothly without contacting the base portion 211.

  The interior and the exterior of the rotor cup 222 communicate with each other through a gap 71. However, since the annular end 224 is positioned in the annular groove 214, the gap 71 is bent. Therefore, the water droplet intrusion path into the motor 2 becomes longer. Thereby, the infiltration of water droplets into the motor 2 can be suppressed. The outer peripheral surface of the annular end 224 serves as a waterproof wall that stops water droplets from entering the radially inner side of the cylindrical portion 62 of the rotor cup 222.

  The annular groove portion 214 includes an annular inner wall surface 215, an annular outer wall surface 216, and an annular bottom surface 217. The outer wall surface 216 is located radially outside the inner wall surface 215 and faces the inner wall surface 215 in the radial direction. An annular end 224 disposed in the annular groove 214 opposes at least one of the inner wall surface 215 and the outer wall surface 216 in the radial direction. In this way, the water droplet intrusion path from the outside of the motor 2 to the inside of the motor 2 is switched in the axial direction at least once. Thereby, the infiltration path | route of the water droplet to the inside of the motor 2 can be lengthened.

  In the present embodiment, the annular end 224 faces both the inner wall surface 215 and the outer wall surface 216 in the radial direction. If it does in this way, the penetration path of the water droplet to the inside of motor 2 will change to the direction of a 2 times axis. Thereby, the infiltration path of water droplets into the motor 1 can be made longer.

  In the present embodiment, the axial length of the outer wall surface 216 is shorter than the axial length of the inner wall surface 215. Thereby, the space which arrange | positions the impeller 3 on the radial direction outer side of the cylindrical part 62 can be taken widely. Therefore, the blade 31 of the impeller 3 can be enlarged to increase the amount of 3 air blown by the impeller.

  As described above, the fan unit 12 of the present embodiment has the labyrinth structure 70 configured by the annular groove portion 214 and the annular end portion 224. Thereby, the penetration of water droplets into the interior of the motor 2 can be suppressed and adhesion of water droplets to the stator 212 can be prevented. As a result, the durability of the motor 2 can be improved. In particular, when the motor 2 is fixed to the panel 4, the motor 2 is easily exposed to wind and rain because it is disposed in front of the housing 11 in the axial direction. However, in the fan unit 12 of this embodiment, the motor 2 can be fixed to the panel 4 and water droplets can be prevented from adhering to the stator 212. That is, it is possible to achieve both reduction of the thickness of the outdoor unit 1 by fixing the motor 2 to the panel 4 and prevention of water droplets from entering the inside of the motor 1.

<4. Modification>
As mentioned above, although exemplary embodiment of this invention was described, this invention is not limited to said embodiment.

  FIG. 7 is a partial cross-sectional view of a fan unit according to a modification. In this fan unit, the base portion 211A belonging to the stationary portion has an annular convex portion 215A that protrudes annularly around the central axis. The annular convex portion 215A protrudes rearward in the axial direction from the rear surface of the first fixed portion 51A. The cylindrical portion 62A of the rotor cup 222A belonging to the rotating portion has an annular groove portion 63A that is recessed with the central axis as a center. The annular groove 63A is recessed from the axial front end of the cylindrical part 62A toward the rear in the axial direction. And the annular convex part 215A is arrange | positioned in the annular groove part 63A. As described above, the labyrinth structure 70A may be formed by the annular groove 63A provided on the rotating part side and the annular convex part 215A provided on the stationary part side. Even with such a structure, the water droplet infiltration path can be lengthened to suppress the adhesion of water droplets to the stator 212A.

  Moreover, in the said embodiment, the annular groove part was formed in the base part which is a stationary part of a motor. However, the annular groove may be formed in the panel. Moreover, in the structure of FIG. 7, you may form an annular convex part in a panel.

  Moreover, in the said embodiment, the cyclic | annular end part arrange | positioned at a cyclic | annular groove part was formed in the cylindrical part of the rotor cup. However, the annular end portion may be a member different from the rotor cup.

  In the above embodiment, the basic shape of the through hole is a polygon such as a quadrangle or a regular hexagon. However, the shape of the through hole may be a circle or an ellipse, or other shapes.

  Moreover, in said embodiment, the shape of the radial inner edge of the frame part of the panel was substantially circular seeing from the axial direction. However, the shape of the inner edge in the radial direction of the frame portion may be a polygon such as a regular hexagon, a regular octagon, or a regular dodecagon as viewed from the axial direction, or other shapes.

  Moreover, in said embodiment, the shape of the radial direction outer edge of the center part of the panel was substantially circular seeing from the axial direction. However, the shape of the radially outer edge of the central portion may be a polygon such as a regular hexagon, a regular octagon, or a regular dodecagon as viewed from the axial direction, or may be other shapes.

  In the motor of the above embodiment, the stationary stator is exposed, but the stator may be covered with a mold resin. In other words, the stationary part may have a mold resin that covers at least a part of the stator. If the stator is covered with the mold resin, the adhesion of water droplets to the stator can be further suppressed. Further, it is possible to prevent the stator from being vibrated slightly by a magnetic action when the motor is driven. Therefore, vibration and noise generated when the motor is driven can be further suppressed.

  The specific configuration for realizing each part of the outdoor unit and the fan unit may be different from the configuration shown in the above embodiment. Moreover, you may combine suitably each element which appeared in said embodiment and modification in the range which does not produce inconsistency.

  The present invention can be used for a fan unit and an outdoor unit.

DESCRIPTION OF SYMBOLS 1 Outdoor unit 2 Motor 3 Impeller 4 Panel 11 Case 12 Fan unit 13 Heat exchanger 14 Power supply 15 Lead wire 21 Static part 22 Rotating part 31 Blade 41 Center part 42 Frame part 43 Ventilation part 44 Through-hole 51, 51A 1st fixation Part 52 Second fixing part 53 Stator core 54 Coil 60 Rib 61 Disk part 62, 62A Cylindrical part 63A Annular groove part 70, 70A Labyrinth structure 111 Exhaust port 112 Inlet port 211, 211A Base part 212, 212A Stator 213 Lead wire holding part 214 Annular groove 215A Annular convex 221 Shaft 222, 222A Rotor cup 223 Magnet 224 Annular groove 431 Partition 432 Tapered surface 521 Bearing mechanism 531 Teeth

Claims (9)

A fan unit used for an outdoor unit of an air conditioner,
A motor,
An impeller that rotates around a central axis extending forward and backward by the power of the motor;
A panel that is disposed in front of the impeller and has a plurality of through holes that allow airflow generated by rotation of the impeller to pass therethrough;
Have
The motor is
A stationary part having a stator;
A rotating part having a magnet located radially outside the stator;
Have
The stationary part is fixed to the panel;
The stationary part or the panel has an annular groove centered on the central axis,
The rotating part has an annular end centered on the central axis,
A fan unit in which the annular end is disposed in the annular groove. The fan unit according to claim 1,
The annular groove is
An annular inner wall;
An annular outer wall located radially outside the inner wall and facing the inner wall in the radial direction;
An annular bottom surface;
Consists of
The annular end portion is a fan unit that faces at least one of the inner wall surface and the outer wall surface in a radial direction. The fan unit according to claim 2,
The annular end portion is a fan unit that faces both the inner wall surface and the outer wall surface in a radial direction. The fan unit according to claim 2 or 3, wherein
The rotating portion has a cylindrical portion located on the radially outer side of the magnet and on the radially inner side of the impeller,
A fan unit, wherein a front end portion of the cylindrical portion is the annular end portion. The fan unit according to claim 4,
The axial length of the outer wall surface is a fan unit shorter than the axial length of the inner wall surface. The fan unit according to any one of claims 1 to 5, wherein
The stationary part extends perpendicularly to the axial direction and has a base part fixed to the panel,
The fan unit, wherein the base portion has the annular groove portion. A fan unit used for an outdoor unit of an air conditioner,
A motor,
An impeller that rotates around a central axis extending forward and backward by the power of the motor;
A panel that is disposed in front of the impeller and has a plurality of through holes that allow airflow generated by rotation of the impeller to pass therethrough;
Have
The motor is
A stationary part having a stator;
A rotating part having a magnet located radially outside the stator;
Have
The stationary part is fixed to the panel;
The stationary part or the panel has an annular convex part centered on the central axis,
The rotating part has an annular groove part around the central axis,
A fan unit in which the annular projection is disposed in the annular groove. The fan unit according to any one of claims 1 to 7,
The stationary part is a fan unit having a mold resin covering at least a part of the stator. The fan unit according to any one of claims 1 to 8,
A heat exchanger,
Have
The impeller is disposed between the heat exchanger and the panel,
The outdoor unit in which the airflow is generated from the heat exchanger side toward the panel side.

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