WO2017086123A1 - Fan unit and outdoor unit - Google Patents

Abstract

This fan unit, which is used in an outdoor unit of an air conditioner, has a motor, an impeller, and a panel. The impeller rotates due to the power of the motor about a central axis that extends in the fore-aft direction. The panel is disposed to the front of the impeller and has a plurality of through-holes that transmit an air flow that is generated by the rotation of the impeller. Furthermore, the panel has a center portion, which supports a stationary portion of the motor, and at least one rib. The rib includes a first rib that extends from the center portion toward the outside in the radial direction. The rigidity of the panel is improved due to the fact that the panel has the first rib. This makes it possible to suppress deformation of the panel.

Description

Fan unit and outdoor unit

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 disposed on the downstream side or the upstream side of the impeller of the fan motor (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, if the fan motor is simply fixed to the panel, the panel may vibrate greatly and be deformed when the fan motor is driven. *

The objective of this invention is providing the technique which suppresses a deformation | transformation of a panel, making an outdoor unit thin.

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 portion, and the panel includes a central portion that supports the stationary portion, and at least one rib, and the rib extends from the central portion toward a radially outer side. including.

According to the exemplary first invention of the present application, the panel has the first rib, whereby the rigidity of the panel is improved. Thereby, a deformation | transformation of a panel can be suppressed.

FIG. 1 is a longitudinal sectional view of an outdoor unit according to the first embodiment. FIG. 2 is a rear view of the panel according to the first embodiment. FIG. 3 is a perspective view of the outdoor unit according to the second embodiment. FIG. 4 is a longitudinal sectional view of the outdoor unit according to the second embodiment. FIG. 5 is a front view of a panel according to the second embodiment. FIG. 6 is a rear view of the panel according to the second embodiment. FIG. 7 is a partial cross-sectional view of a panel according to the second embodiment. FIG. 8 is a front view of a panel according to a modification. FIG. 9 is a front view of a panel according to another modification. FIG. 10 is a front view of a panel according to another modification. FIG. 11 is a front view of a panel according to another modification. FIG. 12 is a rear view of a panel according to another modification. FIG. 13 is a front view of a panel according to another modification. FIG. 14 is a longitudinal sectional view of an outdoor unit according to another 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. 3, FIG. 4, FIG. 7, and FIG. 14, the front and rear directions are indicated by arrows with “F” for the front and “B” for the rear. *

First, the outdoor unit 1A according to the first embodiment will be described with reference to FIG. 1 and FIG. FIG. 1 is a longitudinal sectional view of the outdoor unit 1A. FIG. 2 is a rear view of the panel 4A of the fan unit 12A used in the outdoor unit 1A. *

The outdoor unit 1A includes a housing 11A, a fan unit 12A, a heat exchanger 13A, and a power source and a compressor that are not shown. The casing 11A is a substantially rectangular parallelepiped casing having an exhaust port 111A on the front surface and an intake port 112A on the rear surface. *

The fan unit 12A includes a motor 2A, an impeller 3A, and a panel 4A. *

The motor 2A has a stationary part 21A and a rotating part 22A. The stationary part 21A has a stator 212A. The rotating part 22A is supported so as to be rotatable around a central axis 9A extending forward and backward with respect to the stationary part 21A. The rotating portion 22A has a magnet 223A located on the radially outer side than the stator 212A. *

The impeller 3A rotates around the central axis 9A together with the rotating portion 22A of the motor 2A. When the motor 2A is driven, the impeller 3A generates an airflow directed forward by rotation. *

The panel 4A is disposed in front of the impeller 3A. The panel 4A has a plurality of through holes 44A through which an air flow generated by the rotation of the impeller 3A passes. The panel 4A includes a central portion 41A, a ventilation portion 43A, and one rib 60A. *

The central part 41A is a part that supports the stationary part 21A of the motor 2A. The ventilation part 43A is arranged on the radially outer side of the central part 41A and has a plurality of through holes 44A. The rib 60A of the present embodiment is a first rib 61A that extends outward from the central portion 41A in the radial direction. *

When the panel 4A supports the motor 2A, vibration during driving is easily propagated from the motor 2A to the panel 4A. However, in this fan unit 12A, the panel 4A has the first rib 61A, whereby the rigidity of the panel 4A is improved. Thereby, the vibration of the panel 4A at the time of driving of the motor 2A can be suppressed. As a result, deformation of the panel 4A can be suppressed. *

In the fan unit 12A of the present embodiment, the panel 4A is installed perpendicular to the horizontal plane. The first rib 61A extends perpendicular to the horizontal plane. Thereby, the deformation | transformation of the panel 4A by gravity can be suppressed. In the present application, “vertical” includes substantially vertical. A horizontal plane is a plane that intersects perpendicularly to the direction of gravity. *

Next, the configuration of the outdoor unit 1 according to the second embodiment will be described with reference to FIGS. 3 and 4. FIG. 3 is a perspective view of the outdoor unit 1. FIG. 4 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 so as to cover 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 described later. In FIG. 3, 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. *

Next, the configuration of the fan unit 12 will be described with reference to FIGS. FIG. 5 is a front view of the panel 4 of the fan unit 12 used in the outdoor unit 1. FIG. 6 is a rear view of the panel 4. FIG. 7 is a partial cross-sectional view of the panel 4 taken along the line A-A ′ of FIGS. 5 and 6. 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. 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 portion 55 and a cylindrical portion 56. The disc portion 55 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 55. The cylindrical portion 56 is a substantially cylindrical portion that extends in the axial direction from the outer peripheral portion of the disc portion 55. *

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 rotor cup 222 and the magnet 223 may be formed by a single plastic magnet. *

The impeller 3 has a plurality of blades 31 extending radially outward from the outer peripheral surface of the cylindrical portion 56 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 generates a forward airflow by rotation. *

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 as a finger guard prevents a user's finger from coming into contact with the impeller, 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. 5 and 6, in the present 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 central 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 is a first rib 61 that extends radially outward from the outer peripheral portion of the central portion 41. The width of the first rib 61 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 first rib 61 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 first rib 61 has substantially the same axial position as the front end portion of the other portion of the ventilation portion 43. In addition, the rear end portion of the first rib 61 has substantially the same axial position as the rear end portion of the other part of the ventilation portion 43. That is, the first rib 61 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 first rib 61, 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. Further, since the contact area between the motor 2 and the central portion 41 increases, the motor 2 can be firmly fixed to the panel 4. A cushioning material may be disposed between the base portion 211 of the motor 2 and the central portion 41 of the panel 4. If it does so, it will become difficult to transmit the vibration of the motor 2 by the panel 4. FIG. *

The panel 4 of this 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. 6, 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. 6, the first rib 61 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 first rib 61 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 first rib 61. *

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 suppressed that the lead wire 15 obstructs the airflow. Thereby, it can suppress that the air volume discharged | emitted outside the outdoor unit 1 falls by the lead wire 15. FIG. 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. 7, 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. In other words, the wind generated by the impeller 3 flows along the tapered surface 432. As a result, the wind flows smoothly, and the generation of noise due to the collision of the wind generated by the impeller 3 with the partition portion 431 is suppressed. *

As mentioned above, although exemplary embodiment of this invention was described, this invention is not limited to said embodiment. In addition, in the following modifications, it is the same as that of the fan unit which concerns on 2nd Embodiment except the shape of a panel. For this reason, in the following modification, only a different part from 2nd Embodiment is demonstrated. *

FIG. 8 is a front view of a panel 4B according to a modification. This panel 4B has four ribs 60B. All of the four ribs 60B are first ribs 61B that extend radially outward from the central portion 41B. *

In the fan unit having the panel 4B, the panel 4B has the first rib 61B, whereby the rigidity of the panel 4B is improved. Further, the panel 4B has the plurality of first ribs 61B, whereby the rigidity of the panel 4B is further improved. Thereby, the vibration of the panel 4B at the time of the drive of a motor can be suppressed more. As a result, the deformation of the panel 4B can be further suppressed. *

In the panel 4B, the four first ribs 61B are arranged at equal intervals in the circumferential direction. Thereby, the rigidity of panel 4B further improves. That is, the deformation of the panel 4B can be further suppressed. In the present application, “equal intervals” includes substantially equal intervals. *

FIG. 9 is a front view of a panel 4C according to another modification. The panel 4C has two ribs 60C. The two ribs 60C include one first rib 61C and one second rib 62C. The first rib 61C extends radially outward from the central portion 41C. The second rib 62C extends in the circumferential direction on the radially outer side than the central portion 41C. *

In the fan unit having the panel 4C, the panel 4C has the second rib 62C in addition to the first rib 61C, whereby the rigidity of the panel 4C is further improved. Thereby, the vibration of the panel 4C at the time of driving of the motor can be further suppressed. In the panel 4C, the second rib 62C is annular. Thereby, the rigidity of the panel 4C can be improved over the entire circumference. *

This panel 4C is integrally formed. Accordingly, the central portion 41C, the frame portion 42C, the ventilation portion 43C and the rib 60C are integrally formed. For this reason, the edge of a part of the through holes 441C in the through hole 44C is constituted by a part of the first rib 61C and a part of the second rib 62C. *

In the example of FIG. 9, the panel 4C has one second rib 62C, but the present invention is not limited to this. The panel may have a plurality of second ribs. In that case, the rigidity of the panel can be further improved. *

In the example of FIG. 9, the shape of the second rib 62C is substantially annular when viewed in the axial direction, but the present invention is not limited to this. The shape of the second rib 62C may be a polygon such as a substantially hexagonal shape, a substantially octagonal shape or a substantially dodecagonal shape when viewed in the axial direction, or may be other shapes. *

FIG. 10 is a front view of a panel 4D according to another modification. This panel 4D has eight ribs 60D. The eight ribs 60D include four first ribs 61D and four third ribs 63D. The first rib 61D and the third rib 63D extend radially outward from the central portion 41D. The third rib 63D is thicker in the circumferential direction or the axial direction than the first rib 61D. *

In the fan unit having the panel 4D, the panel 4D has the third rib 63D in addition to the first rib 61D, whereby the rigidity of the panel 4D is further improved. Therefore, it is possible to further suppress the vibration of panel 4D when the motor is driven. The third rib 63D in the example of FIG. 10 is thicker in the circumferential direction than the first rib 61D. Thereby, the third rib 63D can be provided while suppressing the axial thickness of the panel 4D. *

Further, since the panel 4D has the plurality of third ribs 63D, the rigidity of the panel 4D is further improved. Thereby, the vibration of panel 4D at the time of the drive of a motor can be suppressed more. As a result, the deformation of the panel 4D can be further suppressed. *

In the panel 4D, the four first ribs 61D are arranged at equal intervals in the circumferential direction, whereby the rigidity of the panel 4D is further improved. Further, the four third ribs 63D are arranged at equal intervals in the circumferential direction, whereby the rigidity of the panel 4D is further improved. Therefore, the deformation of the panel 4D can be further suppressed. *

In the example of FIG. 10, the third rib 63D is thicker in the circumferential direction than the first rib 61D, but the present invention is not limited to this. The third rib may be thicker in the axial direction than the first rib. In that case, it can suppress that the opening area of the panel seen from the axial direction, ie, the total area of the through-hole seen from the axial direction, becomes small. That is, the rigidity of the panel 4D can be improved without reducing the amount of air discharged to the outside of the outdoor unit. *

Further, in the example of FIG. 10, two first ribs 61D out of the plurality of ribs 60D extend perpendicular to the horizontal plane. Thus, the deformation of the panel 4D due to gravity can be suppressed by extending the at least one rib 60 perpendicularly to the horizontal plane. The number of the first ribs 61D and the third ribs 63D may be 1 to 3 or 5 or more, respectively. *

FIG. 11 is a front view of a panel 4E according to another modification. FIG. 12 is a rear view of the panel 4E of the example of FIG. The panel 4E has nine ribs 60E. The nine ribs 60E include four first ribs 61E, one second rib 62E, and four third ribs 63E. The first rib 61E extends radially outward from the central portion 41E. The second rib 62E extends in the circumferential direction on the radially outer side than the central portion 41E. The third rib 63E extends radially outward from the central portion 41E. The third rib 63E is thicker than the first rib 61E in the circumferential direction. *

In the fan unit having the panel 4E, the panel 4E includes the second rib 62E and the third rib 63E in addition to the first rib 61E, whereby the rigidity of the panel 4E is further improved. Thereby, the vibration of the panel 4E at the time of the drive of a motor can be suppressed more. As a result, the deformation of the panel 4E can be further suppressed. *

As shown in FIG. 12, a holding groove 600E that is recessed forward from the rear end face is provided in a part of the second rib 62E and a part of the two third ribs 63E. Here, the two third ribs 63E provided with the holding grooves 600E.
Of these, those extending obliquely downward from the central portion 41E are referred to as lower ribs 631E, and those extending obliquely upward from the central portion 41E are referred to as upper ribs 632E. The lower rib 631E and the upper rib 632E are two third ribs 63E adjacent in the circumferential direction among the four third ribs 63E.

The holding groove 600E includes a first groove 601E extending from the central portion 41E to the approximate center of the lower rib 631E, a second groove 602E extending along the second rib 62E between the lower rib 631E and the upper rib 632E, And a third groove 603E extending radially outward from the approximate center of the upper rib 632E. The first groove 601E and the second groove 602E are connected at the connection portion between the lower rib 631E and the second rib 62E. In addition, the second groove 602E and the third groove 603E are connected at the connection point between the second rib 62E and the upper rib 632E. *

In the fan unit having the panel 4E, the lead wire holding portion 213E of the motor 2E fixed to the panel 4E is disposed along the first groove 601E. In FIG. 12, the positions of the outer peripheral surface of the motor 2E, the lead wire holding portion 213E and the stator 212E are indicated by broken lines. A lead wire extending radially outward from the motor 2E via the lead wire holding portion 213E is directed obliquely downward along the first groove 601E. Thereafter, the lead wire changes its direction upward, proceeds along the second groove 602E and the third groove 603E, and toward the diagonally upper side of the panel 4E. And after that, it connects with the terminal of the power supply arrange | positioned above the upper end of the 3rd groove | channel 603E. *

Thus, in the fan unit having the panel 4E of the example of FIGS. 11 and 12, the lead wire holding portion 213E is disposed below the stator 212E. Further, the lead wire extends downward from the lead wire holding portion 213E. For this reason, when water droplets enter the casing of the outdoor unit due to rain or the like and the water droplets adhere to the lead wire, the water droplets accumulate near the connection portion between the lower rib 631E and the second rib 62E. , Accumulated water drops fall downward. Therefore, it is possible to prevent water droplets from directly entering the motor 2E through the lead wires. *

Further, in the outdoor unit having the panel 4E, the lead wire extending from the motor 2E extends toward the power source disposed above the lead wire holding portion 213E. For this reason, it is also suppressed that water droplets collected in the vicinity of the connection portion between the lower rib 631E and the second rib 62E described above enter the inside of the power source through the lead wires. Note that the power supply is not limited to the case where the entire power supply is above the lead wire holding portion 213E, and the connection portion between the lead wire and the power supply may be above the lead wire holding portion 213E. *

Further, as shown in FIGS. 11 and 12, if the lead wire is extended downward from the motor 2E, water drops descending from the upper side of the motor 2E are blocked by the motor 2E and do not easily reach the lead wire holding portion 213E. Therefore, the adhesion of water droplets to the lead wire holding portion 213E can be further suppressed. *

The groove for holding the lead wire may be provided in a rib different from the example of FIG. For example, the first groove 601E and the third groove 603E may be provided in the first rib. However, when water droplets collected around the motor 2E are to be drained vertically downward, it is preferable that no lead wire be disposed on the rib extending vertically downward from the central portion 41E of the panel 4E. *

FIG. 13 is a front view of a panel 4F according to another modification. This panel 4F has ten ribs 60F. The ten ribs 60F include four first ribs 61F, two second ribs 62F, and four third ribs 63F. The first rib 61F extends from the central portion 41F toward the radially outer side. The second rib 62F extends in the circumferential direction on the radially outer side than the central portion 41F. The third rib 63F extends radially outward from the central portion 41F. The third rib 63F is thicker than the first rib 61F in the circumferential direction. *

In the panel 4F, the second ribs 62F are not connected annularly in the circumferential direction. Each of the second ribs 62F connects the upper third rib 63F and the lower third rib 63F in the circumferential direction. Thus, the 2nd rib 62F may not be cyclic | annular. *

FIG. 14 is a longitudinal sectional view of an outdoor unit 1G according to another modification. The casing 11G of the outdoor unit 1G includes a flat front wall portion 113G and a bottom plate portion that extends substantially perpendicular to the front wall portion 113G. The panel 4G of the fan unit 12G is attached to the exhaust port 111G provided in the front wall portion 113G. The casing 11G of the outdoor unit 1G has a fourth rib 64G provided between the front wall portion 113G and the bottom plate portion 114G. One end of the fourth rib 64G is fixed to the rear surface of the front wall 113G. The other end of the fourth rib 64G is fixed to the upper surface of the bottom plate portion 114G. In this way, the rigidity of the front wall portion 113G is improved by the fourth rib 64G. Therefore, it can suppress that the front wall part 113G and the whole panel 4G vibrate. The fourth rib 64G may be a columnar member. However, if the fourth rib 64G is formed in a plate shape that extends parallel to both the front wall portion 113G and the bottom plate portion 114G, the rigidity of the front wall portion 113G is further increased. be able to. *

In the above embodiment and the modification, the basic shape of the through hole is a polygon such as a quadrangle or a regular hexagon, but the present invention is not limited to this. The shape of the through hole may be circular or elliptical, or may be other shapes. *

In the above-described embodiment and modification, the shape of the inner edge in the radial direction of the frame portion of the panel is substantially circular as viewed from the axial direction, but the present invention is not limited to this. 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. *

Similarly, in the above-described embodiment and modification, the shape of the radially outer edge of the central portion of the panel is substantially circular as viewed from the axial direction, but the present invention is not limited to this. 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 other shapes. *

In addition, the rib may have a simple quadrangular prism shape or another shape. The rib may have a stationary blade shape in which the thickness is converged toward both ends in the axial direction. If the rib is shaped like a stationary blade, the turbulence of the airflow in the vicinity of the rib can be suppressed. As a result, panel vibration and noise can be further suppressed. *

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.

1, 1A outdoor unit 2, 2A, 2E motor 3, 3A impeller 4, 4A, 4B, 4C, 4D, 4E, 4F panel 11, 11A housing 12, 12A fan unit 13, 13A heat exchanger 14, power supply 14 power supply 15 lead wire 21, 21A stationary part 22, 22A rotating part 41, 41A, 41B, 41C, 41D, 41E, 41F central part 43, 43A, 43C ventilation part 44, 44A, 44C through hole 60, 60A, 60B, 60C, 60D, 60E , 60F rib 61, 61A, 61B, 61C, 61D, 61E, 61F first rib 62C, 62E, 62F second rib 63D, 63E, 63F third rib 212, 212A, 212E stator 213, 213E lead wire holding part 223 223A Magne DOO 441C adjacent through holes 600,600E holding groove

Claims (24)

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 panel is
A central portion that supports the stationary portion;
At least one rib;
Have
The rib is
A fan unit including a first rib extending radially outward from the central portion. The fan unit according to claim 1,
The panel is a fan unit having a plurality of the first ribs. The fan unit according to claim 2,
The plurality of first ribs are fan units arranged at equal intervals in the circumferential direction. The fan unit according to any one of claims 1 to 3, wherein
The panel is installed perpendicular to a horizontal plane;
The rib is
A fan unit including the first rib extending perpendicularly to the horizontal plane. It is a fan unit of any one of Claim 1- Claim 4, Comprising:
The through hole is a fan unit provided in a region of the panel excluding the central portion. The fan unit according to any one of claims 1 to 5, wherein
The first rib is a fan unit that extends radially outward from an outer peripheral portion of the central portion. The fan unit according to any one of claims 1 to 6, wherein
The rib is
The fan unit further includes a second rib extending in a circumferential direction on a radially outer side than the central portion. The fan unit according to claim 7, wherein
The second rib is an annular fan unit. The fan unit according to claim 7 or 8,
The panel is a fan unit having a plurality of the second ribs. The fan unit according to any one of claims 7 to 9,
The fan unit in which at least a part of the first rib and at least a part of the second rib constitute an edge of a part of the through hole. The fan unit according to any one of claims 1 to 10, wherein
The fan unit has a polygonal shape when viewed in the axial direction of the through hole. The fan unit according to claim 11, wherein
The fan unit whose shape seen in the axial direction of the through hole is a regular hexagon. The fan unit according to any one of claims 1 to 12,
The rib is
The fan unit further includes a third rib that extends radially outward from the central portion and is thicker in the circumferential direction or the axial direction than the first rib. The fan unit according to claim 13,
The third rib is a fan unit that is thicker in the circumferential direction than the first rib. The fan unit according to claim 13,
The third rib is a fan unit that is thicker in the axial direction than the first rib. The fan unit according to any one of claims 13 to 15,
The panel is a fan unit having a plurality of the third ribs. The fan unit according to claim 16, wherein
The plurality of third ribs are fan units arranged at equal intervals in the circumferential direction. The fan unit according to any one of claims 1 to 17,
A lead wire extending from the motor;
At least a part of the lead wire is a fan unit arranged along the rib. The fan unit according to claim 18, wherein
The rib is a fan unit having a holding groove for holding the lead wire. The fan unit according to claim 18 or 19,
The motor is
A lead wire holding part for holding the lead wire;
The lead wire holding portion is disposed below the stator,
The lead wire is a fan unit that extends downward from the lead wire holding portion. The fan unit according to claim 20,
The said lead wire is a fan unit extended toward the power supply arrange | positioned above the said lead wire holding | maintenance part. The fan unit according to any one of claims 1 to 21,
The stationary part is a fan unit having a mold resin covering at least a part of the stator. An outdoor unit of an air conditioner,
The fan unit according to any one of claims 1 to 22,
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. The outdoor unit according to claim 23,
A housing that houses the heat exchanger and the impeller;
The housing is
A front wall to which the panel is attached;
A bottom plate portion extending perpendicularly to the front wall portion;
A fourth rib having both ends fixed to the front wall portion and the bottom plate portion;
Outdoor unit having.

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