CN112240303A

CN112240303A - Air supply device and air conditioner

Info

Publication number: CN112240303A
Application number: CN202010670517.7A
Authority: CN
Inventors: 山崎良信; 尾关宏隆
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2019-07-19
Filing date: 2020-07-13
Publication date: 2021-01-19
Also published as: JP7271356B2; JP2021017847A

Abstract

The rotating shaft is stably supported by the pivot shaft. The air blower (1) has a bearing (34), and the bearing (34) receives the bearing (34) of the rotating shaft (32) at the end of the rotating shaft (32) which transmits the driving force of the driving motor (33) and is opposite to the driving motor (33) through the air blowing fan (13). The bearing part (34) fixes the bearing component on the surface parallel to the rotating shaft (32) and the surface orthogonal to the rotating shaft (32).

Description

Air supply device and air conditioner

Technical Field

The present invention relates to an air blowing device.

Background

In general, a cross flow fan is used in an air blowing device mounted in an air conditioner such as an air conditioner. In this case, a bearing portion is provided inside the blower, and the bearing portion is composed of a bearing member that pivotally supports a shaft (a rotation shaft) of the cross flow fan and a support member that supports the bearing member.

For example, in the bearing unit disclosed in patent document 1, the support member is formed of two half-divided bodies openable and closable in a direction orthogonal to the rotation axis via a hinge unit, the two half-divided bodies are formed into a substantially circular arc shape, and the bearing member is attached to and fitted in the two half-divided bodies. Further, the bearing portion is configured to be attachable to and detachable from a bottom frame of the indoor unit.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2008-107046

Disclosure of Invention

Technical problem to be solved by the invention

However, the conventional bearing portion is supported by two half-divided bodies as support members such that the bearing member is sandwiched by planes parallel to the rotation axis. Therefore, although the bearing member can be stably fixed in the direction orthogonal to the rotation axis, the bearing member cannot be stably fixed in the direction parallel to the rotation axis. Therefore, the conventional bearing portion has a problem that the rotating shaft cannot be stably pivoted.

An object of one aspect of the present invention is to provide a blower device including a bearing portion capable of stably pivotally supporting a rotating shaft.

Means for solving the problems

In order to solve the above problem, an air blowing device according to an aspect of the present invention includes: a motor, a blower fan fixed to the rotating shaft, and a bearing portion that receives the rotating shaft at an end of the rotating shaft opposite to the motor via the blower fan, the bearing portion including a bearing member that rotatably receives the rotating shaft; and a fixing portion that fixes the bearing member, the fixing portion fixing the bearing member on a surface orthogonal to the rotation axis and a surface parallel to the rotation axis.

Advantageous effects

According to an aspect of the present invention, the rotating shaft can be stably pivoted.

Drawings

Fig. 1 is a perspective view of an air blowing device according to a first embodiment of the present invention.

Fig. 2 is a perspective view of a blowing unit constituting the blowing device shown in fig. 1.

Fig. 3 is a perspective view of a casing constituting the blower device shown in fig. 1.

Fig. 4 is a perspective view of a first fixing member constituting a part of a bearing portion provided in the blower device shown in fig. 1.

Fig. 5 is a perspective view of a second fixing member constituting a part of a bearing portion provided in the blower device shown in fig. 1.

Fig. 6 is a perspective view showing a state in which a first fixing member and a second fixing member of a bearing portion provided in the blower shown in fig. 1 are opened via a hinge.

Fig. 7 is a perspective view showing a state in which a first fixing member and a second fixing member of a bearing portion provided in the blower shown in fig. 1 are closed via a hinge.

Fig. 8 is a view showing a part of a process in which the first fixing member and the second fixing member of the bearing portion of the blower shown in fig. 1 are switched from the open state to the closed state via the hinge.

Fig. 9 is a view showing a part of a process in which the first fixing member and the second fixing member of the bearing portion of the blower shown in fig. 1 are switched from the open state to the closed state via the hinge.

Fig. 10 is a view showing a part of a process of shifting the first fixing member and the second fixing member of the bearing portion of the blower shown in fig. 1 from the open state to the closed state via the hinge.

Fig. 11 is a view showing a part of a process in which the first fixing member and the second fixing member of the bearing portion of the blower shown in fig. 1 are switched from the open state to the closed state via the hinge.

Fig. 12 is a view showing a part of a process of mounting a bearing portion to the housing shown in fig. 3.

Fig. 13 is a view showing a state in which a bearing portion is mounted on the housing shown in fig. 3.

Fig. 14 is a perspective view of the bearing portion.

Fig. 15 is a view showing a state in which the bearing portion shown in fig. 14 is attached to a housing.

Fig. 16 is a view showing a state in which the bearing portion is mounted on the entire housing.

Fig. 17 is a diagram for explaining an attachment/detachment mechanism for attaching/detaching the bearing portion to/from the housing.

Fig. 18 is a perspective view of the bearing portion.

Fig. 19 is a view showing a state in which the bearing portion shown in fig. 18 is attached to a housing.

Fig. 20 is a view showing a state in which the bearing portion is mounted on the entire housing.

Fig. 21 is a view for explaining an attachment/detachment mechanism for attaching/detaching the bearing portion to/from the housing.

Fig. 22 is a schematic cross-sectional view illustrating an indoor unit of an air conditioner according to a second embodiment of the present invention.

Detailed Description

(first embodiment)

Hereinafter, one embodiment of the present invention will be described in detail.

(Structure of air supply device)

Fig. 1 is a schematic perspective view of an air blowing device according to the present embodiment. Fig. 2 is a perspective view of a blowing unit provided in the blowing device shown in fig. 1. Fig. 3 is a perspective view of a casing constituting the blower device shown in fig. 1.

As shown in fig. 1, the blower 1 according to the present embodiment includes a casing 10, and a blower unit in which 4 blower fans 13 and a drive motor 33 are arranged in the longitudinal direction in the casing 10. The drive motor 33 is disposed between the four blower fans 13 to transmit rotational force to the two blower fans 13 on both sides, respectively. That is, the drive motor 33 in this case is a two-shaft motor having the rotary shafts 32 on the left and right.

As shown in fig. 2, the blower fan 13 is a sirocco fan configured by connecting two impellers 13a to each other via a disc wall 13 b. That is, the blower fan 13 rotates the impeller 13a in a predetermined direction to suck air from an end surface of the impeller 13a in a direction parallel to the rotation shaft 32 and to discharge air from a rotation surface of the impeller 13 a. In the present embodiment, a metal plate is described as an example of the disc wall 13b, but the metal plate is not limited to the metal plate, and may be a resin plate or another plate.

In the blower fan 13, a joint member 31 for connecting to a rotary shaft 32 for transmitting a rotational force from a drive motor 33 is provided so as to protrude from an end surface of each impeller 13 a. The joint member 31 is provided for each impeller 13 a. The joint members 31 are connected to each other via a hose (not shown) provided on the disk wall 13b serving as a connection portion between the impellers 13 a.

A rotary shaft 32 for transmitting a rotational force from a drive motor 33 is inserted into a joint member 31 of the blower fan 13, and is fixed by screw fastening using screw holes 31a formed in the joint member 31. Further, the joint member 31 of the adjacent blower fan 13 is inserted into the other rotary shaft 32 of the joint member 31 provided on the opposite side of the drive motor 33 of the blower fan 13, and is fixed by screw fastening using a screw hole 31a formed in the joint member 31. The joint member 31 of the blower fan 13 is inserted into the rotary shaft 32 pivotally supported by the bearings 34 on opposite sides of the drive motor 33, and is fixed by screw fastening using screw holes 31a formed in the joint member 31.

The bearing 34 is detachably provided on the housing 10. That is, the bearing 34 is detachably mounted to the casing 10 in a state where the rotation shaft 32 is pivotally supported, that is, in a state where the blower fan 13 and the drive motor 33 are integrated.

As shown in fig. 3, fitting portions 35 into which the bearing portions 34 are fitted are formed at both ends 10a in the longitudinal direction of the housing 10. When blower fan 13 and drive motor 33 in the state shown in fig. 2 are mounted at predetermined positions on casing 10, bearing 34 is inserted into fitting hole 35a of fitting 35. That is, bearing 34 is detachably provided in the main body of blower 1 in a direction perpendicular to rotation shaft 32.

(bearing section 34)

Fig. 4 is a perspective view of the first fixing member 134 constituting the bearing portion 34, fig. 5 is a perspective view of the second fixing member 135 constituting the bearing portion 34, fig. 6 is a perspective view of a state in which the first fixing member 134 and the second fixing member 135 of the bearing portion 34 are opened, and fig. 7 is a perspective view showing a state in which the first fixing member 134 and the second fixing member 135 of the bearing portion 34 are closed. Fig. 8 to 11 are views showing steps of switching from an open state to a closed state of first fixing member 134 and second fixing member 135 of bearing 34 of blower 1 shown in fig. 1 via hinge 136.

The bearing portion 34 includes a bearing member 36, and a first fixing member (fixing portion) 134 and a second fixing member (fixing portion) 135 for fixing the bearing member 36 at a predetermined position. The bearing portion 34 is configured such that the fixed bearing member 36 is fixed to a surface (a bottom surface 134c, which will be described later) perpendicular to the rotation shaft 32 and a surface (a side surface 134d, which will be described later) parallel to the rotation shaft 32 by the first fixing member 134 and the second fixing member 135.

The bearing member 36 is a substantially disc-shaped member made of rubber, and has a shaft hole 36a formed in the center thereof. The shaft hole 36a is not penetrated, and has an inner diameter almost the same as an outer diameter of the rotary shaft 32 in order to suppress vibration of the rotary shaft 32. Further, in the inner peripheral surface of the shaft hole 36a, the frictional resistance is reduced to such an extent as not to hinder the rotation of the rotary shaft 32. That is, the material of the bearing member 36 is preferably a material that can suppress vibration of the rotary shaft 32 and has low frictional resistance. In the bearing member 36, at least the material of the surface may be rubber.

As shown in fig. 4, the first fixing member 134 is formed of a resin molded body having a hinge portion 136a formed at one end, a fitting hole 134a for fitting the bearing member 36 in a direction orthogonal to the shaft hole 36a is formed on the hinge portion 136a side of the surface fitted to the second fixing member 135, and two

claw portions

134b and 134b for engaging with the second fixing member 135 when the second fixing member 135 is combined are formed on the opposite side to the hinge portion 136 a.

As shown in fig. 4, the fitting hole 134a includes a bottom surface 134c and a side surface 134d formed perpendicular to the outer periphery of the bottom surface 134 c. The side surface 134d is a curved surface corresponding to a side surface of a cylinder centered on the rotation axis 32. The bottom surface 134c is formed to have an outer diameter smaller than that of the bearing member 36. This enables the bearing member 36 made of rubber to be reliably fixed to the fitting hole 134 a. Further, the center portion of the bottom surface 134c is opened in a substantially circular shape so that the shaft hole 36a of the bearing member 36 is exposed. Thus, when the bearing member 36 is fitted into the fitting hole 134a, the bottom surface 134c contacts a surface perpendicular to the shaft hole 36a of the bearing member 36, and the side surface 134d contacts an outer peripheral surface parallel to the shaft hole 36a of the bearing member 36. That is, in the state where the bearing member 36 is fitted in the fitting hole 134a, the bottom surface 134c becomes a surface perpendicular to the rotary shaft 32 (the shaft hole 36a), and the side surface 134d becomes a surface parallel to the rotary shaft 32 (the shaft hole 36 a).

On the other hand, as shown in fig. 5, the second fixing member 135 is formed of a resin molded body having a hinge portion 136b formed at one end, a fitting hole 135a for fitting the bearing member 36 in a direction perpendicular to the shaft hole 36a is formed on the hinge portion 136b side of a surface to be fitted to the first fixing member 134, and two

claw portions

134b and 134b for engaging with the first fixing member 134 when the first fixing member 134 is combined are formed on an end portion 135b on the opposite side of the hinge portion 136 b.

As shown in fig. 5, the fitting hole 135a includes a bottom surface 135c and a side surface 135d formed perpendicular to the outer periphery of the bottom surface 135 c. The side surface 135d is a curved surface corresponding to a side surface of a cylinder centered on the rotation axis 32. The bottom surface 135c is formed to have an outer diameter smaller than that of the bearing member 36. The bearing member 36 made of rubber can be reliably fixed to the fitting hole 135 a. Further, the center portion of the bottom surface 135c is opened in a substantially circular shape so that a portion facing the shaft hole 36a of the bearing member 36 is exposed. Thus, when the bearing member 36 is fitted into the fitting hole 135a, the bottom surface 135c contacts a surface perpendicular to the shaft hole 36a of the bearing member 36, and the side surface 134d contacts an outer peripheral surface parallel to the shaft hole 36a of the bearing member 36. That is, in the state where the bearing member 36 is fitted in the fitting hole 135a, the bottom surface 135c becomes a surface perpendicular to the rotary shaft 32 (the shaft hole 36a), and the side surface 135d becomes a surface parallel to the rotary shaft 32 (the shaft hole 36 a).

As shown in fig. 6, one hinge 136 is formed to connect the hinge portion 136a of the first fixing member 134 and the hinge portion 136b of the second fixing member 135. As a result, as shown in fig. 7, the bearing member 36 is sandwiched between the first fixing member 134 and the second fixing member 135 with the hinge 136 as a rotation center. That is, the first fixing member 134 and the second fixing member 135 sandwich two surfaces of the bearing member 36 perpendicular to the rotation shaft 32 from both sides, thereby fixing the bearing member 36.

That is, as shown in fig. 8, in a state where the first fixing member 134 and the second fixing member 135 are opened, the bearing member 36 is placed in the fitting hole 135a of the second fixing member 135 such that the shaft hole 36a faces upward. Thereafter, as shown in fig. 9 to 10, the second fixing member 135 is rotated toward the first fixing member 134 about the hinge 136, and as shown in fig. 11, the second fixing member 135 is overlapped with the first fixing member 134. At this time, the end 135b of the second fixing member 135 is engaged with the two

claw portions

134b and 134b of the first fixing member 134, so that the second fixing member 135 is fixed to the first fixing member 134, thereby forming the bearing portion 34.

As shown in fig. 7, in the bearing portion 34, the bearing member 36 is sandwiched between and fixed to the first fixing member 134 and the second fixing member 135 so as to cover the periphery of the shaft hole 36 a. Here, the fitting hole 134a of the first fixing member 134 and the fitting hole 135a of the second fixing member 135 are formed to have an inner diameter and a depth capable of completely fixing the bearing member 36 in a state where the bearing member 36 is fitted so that the bearing member 36 is not displaced in a direction orthogonal to the shaft hole 36a or in a direction parallel thereto.

(attachment/detachment of bearing part (1))

Fig. 12 is a view showing a part of a process of attaching bearing 34 to housing 10. Fig. 13 is a view showing a state in which bearing 34 is attached to housing 10. Fig. 14 is a perspective view of the bearing portion 34. Fig. 15 is a view showing a state in which bearing 34 shown in fig. 14 is attached to housing 10. Fig. 16 is a view showing a state in which bearing 34 is mounted on the entire housing 10. Fig. 17 is a view for explaining a mechanism for attaching/detaching bearing 34 to/from housing 10. In fig. 12 to 17, for convenience of explanation, only the housing 10, the fitting portion 35, and the bearing portion 34 are shown, and the blower fan 13, the drive motor 33, and the like are omitted.

As shown in fig. 12, the bearing 34 is inserted into the fitting hole 35a of the fitting portion 35 provided on both sides in the longitudinal direction of the housing 10 from the hinge 136 side, and as shown in fig. 13, the insertion into the fitting portion 35 is completed. At this time, the fitting portion 35 is inserted so that the first fixing member 134 of the bearing 34 faces the inner surface of the housing 10, and the shaft hole 36a of the bearing member 36 is exposed on the inner surface side of the housing 10.

Here, as shown in fig. 14, the bearing portion 34 is formed with a claw portion 34a protruding from the surface of the second fixing member 135 on the hinge 136 side. The claw portion 34a is formed integrally with the second fixing member 135, and engages with an engagement hole 35b formed in the fitting portion 35 of the housing 10 in a state where the bearing portion 34 is fitted to the fitting portion 35, as shown in fig. 15 and 16.

Therefore, when the bearing 34 is attached to the housing 10, the bearing 34 is inserted into the fitting portion 35 from the hinge 136 side. At this time, the bearing 34 is inserted into the deep portion of the fitting portion 35 until the claw portion 34a of the bearing 34 engages with the engagement hole 35b of the fitting portion 35 to generate a "click" sound. After the engagement between the claw portion 34a of the bearing 34 and the engagement hole 35b of the fitting portion 35 is confirmed, the bearing 34 is screwed to the housing 10 by the screw 37. Thereby, the bearing 34 is reliably fixed to the fitting portion 35 (the housing 10).

On the other hand, when the bearing portion 34 is removed from the housing 10 from the state shown in fig. 17, first, the screw 37 shown by reference numeral 1903 is removed, and the claw portion 34a is pushed into the fitting portion 35, so that the engagement between the claw portion 34a and the engagement hole 35b is released. Thereafter, the bearing 34 is slid toward the opening of the fitting 35, and removed from the housing 10.

The bearing portion 34 is inserted from the hinge 136 into the fitting portion 35. Therefore, in a state where bearing 34 is completely fitted in fitting portion 35, hinge 136 is fixed inside fitting portion 35 so as to be covered by housing 10. Accordingly, since the bearing 34 cannot open the first fixing member 134 and the second fixing member 135 around the hinge 136 as a rotation center, the bearing member 36 is further stably fixed, and the play of the rotation shaft 32 can be reduced.

(Effect)

According to blower 1 configured as described above, bearing 34 is fixed by sandwiching bearing member 36 so as to cover the periphery of shaft hole 36a from the direction orthogonal to shaft hole 36a, and thus, compared to the conventional case of sandwiching the bearing member 36 only from the direction parallel to shaft hole 36a, the axial center is less likely to shift, and rotating shaft 32 can be stably supported.

Further, since bearing 34 is configured to be detachable from casing 10, it is detachable from casing 10 in a state where blower fan 13 and drive motor 33 are integrated, and maintenance is easy.

Further, since the hinge 136 of the bearing 34 is fixed to the inside of the housing 10 in a state of being fitted to the fitting portion 35, the bearing member 36 can be further stably fixed. This allows the bearing member 36 to sufficiently absorb the vibration and the wobbling of the rotary shaft 32, and therefore, the effect of reducing the noise generated during the rotation of the blower fan 13 can be achieved.

The mechanism for attaching and detaching the bearing portion may be as follows.

(attachment/detachment of bearing part (2))

Fig. 18 is a perspective view of bearing portion 234. Fig. 19 is a view showing a state in which bearing 234 shown in fig. 18 is attached to housing 10. Fig. 20 is a view showing a state in which bearing 234 is mounted on the entire housing 10. Fig. 12 is a view for explaining a mechanism for attaching/detaching bearing 234 to/from casing 10. In fig. 18 to 21, for convenience of explanation, only the housing 10, the fitting portion 235, and the bearing portion 234 are shown, and the blower fan 13, the drive motor 33, and the like are omitted.

As shown in fig. 18, although the bearing portion 234 is formed in almost the same shape as the bearing portion 34, the position of the claw portion 234a is different. That is, the claw portion 234a of the bearing portion 234 is not provided on the hinge 236 side, but provided on the opposite side to the hinge 236 and protruding outward on the side surface of the bearing portion 234. Therefore, as shown in fig. 19 and 20, the fitting portion 235 of the housing 10 does not have an engagement hole formed at the same position as the fitting portion 35. Therefore, as shown in fig. 21, an engagement hole 235b that engages with the claw portion 234a of the bearing portion 234 is formed in a side surface of the fitting portion 235.

Therefore, when the bearing 234 is attached to the housing 10, the bearing 234 is inserted into the fitting hole 235a of the fitting portion 235 from the hinge 136 side. At this time, the bearing 234 is inserted into the deep portion of the fitting portion 235 until the claw portion 234a of the bearing 234 engages with the engagement hole 235b of the fitting portion 235 to generate a "click" sound. After the engagement between the claw portion 234a of the bearing portion 234 and the engagement hole 235b of the fitting portion 35 is confirmed, the bearing portion 34 is screwed to the housing 10 by the screw 237. Thereby, the bearing 234 is reliably fixed to the fitting portion 235 (the housing 10).

On the other hand, when the bearing portion 234 is removed from the housing 10 from the state shown in fig. 21, first, the screw 237 shown by reference numeral 2301 is removed, and the claw portions 34a at two positions are caught, so that the engagement between the two claw portions 234a and the two engagement holes 235b is released. Thereafter, the bearing 234 is slid toward the opening of the fitting hole 235a of the fitting 235, and is removed from the housing 10.

In the above case, bearing 234 is inserted from hinge 236 into fitting 235. Therefore, in a state where bearing portion 234 is completely fitted in fitting portion 235, hinge 236 and hinge 136 are fixed inside fitting portion 235 so as to be covered by casing 10. This can achieve the effects of stably fixing the bearing member 36 and reducing the play of the rotary shaft 32.

(second embodiment)

The following description relates to other embodiments of the present invention. For convenience of explanation, members having the same functions as those described in the above embodiments are given the same reference numerals, and the explanation thereof will not be repeated.

In the present embodiment, an example in which the air blowing device 1 described in the first embodiment is applied to an air conditioner (indoor unit) will be described.

Fig. 22 is a vertical sectional view of an indoor unit of an air conditioner including the blower device 1 shown in fig. 1.

As shown in fig. 2, the indoor unit has a first intake port 11 at the upper part, a second intake port 12 at the lower part, a blower fan 13 and a heat exchanger 14 constituting an air blower inside, and a blowout port 17 at the front part.

The indoor unit includes a first filter 15 inside (below) the first suction port 11, and a second filter 16 inside (above) the second suction port 12. The first filter 15 is, for example, a filter having a function corresponding to a pre-filter, and is a filter having lower performance than the second filter 16 and smaller ventilation resistance than the second filter 16. The second Filter 16 is, for example, a HEPA (High Efficiency Particulate Air Filter) Filter having higher performance than the first Filter 15 and having a larger ventilation resistance than the first Filter 15.

In the indoor unit, air sucked in through the first intake port 11 is blown out from the air outlet 17 through the first filter 15, the air blowing device 1, and the heat exchanger 14. The air sucked from the second suction port 12 is blown out from the blow-out port 17 via the second filter 16, the air blowing device 1, and the heat exchanger 14.

In this way, since the air blower 1 of the first embodiment is mounted on an indoor unit, when the indoor unit is driven, the rattling movement or vibration of the rotary shaft in the air blower 1 can be suppressed, and therefore, the noise when the air blower 1 is driven can be reduced. Further, since the bearing portion 34 constituting the blower 1 is detachable from the casing 10 in the indoor unit, maintenance is also easy.

In the air blowing devices 1 and 2 of the above embodiments, the air blowing method as the air blowing device 1 is described by taking a plurality of sirocco fans as an example, but the present invention is not limited thereto, and cross flow fans and the like can be applied to the present invention. The present invention can be applied to any air blowing device as long as the air blowing device has a rotating shaft.

Further, although the material of the bearing member 36 for pivotally supporting the rotary shaft is described by taking rubber as an example, the material of the bearing member 36 is not limited to rubber. For example, as described in the first embodiment, any material may be used as long as it can suppress vibration of the rotary shaft 32 and has a small frictional resistance.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments are also included in the technical scope of the present invention. Further, new technical features can be formed by combining the technical methods disclosed in the respective embodiments.

Description of the reference numerals

1 air supply device

10 casing

10a end part

13 blowing fan

13a impeller

13b disc wall

14 heat exchanger

15 first filter

16 second filter

31 joint member

32 rotating shaft

33 drive motor

34 bearing part

34a claw part

35 fitting part

35a fitting hole

35b engaging hole

36 bearing component

36a axle hole

134 first fixing part (fixing part)

134a fitting hole

134b claw part

134c bottom surface (surface perpendicular to the rotation axis)

134d side (plane parallel to the axis of rotation)

135 second fixing part (fixing part)

135a fitting hole

135b end part

135c bottom surface (surface perpendicular to the rotation axis)

135d side (plane parallel to the axis of rotation)

136 hinge

136a hinge part

136b hinge portion

234 bearing part

234a claw part

235 fitting part

235a fitting hole

235b clamping hole

236 hinge

Claims

1. An air blowing device is characterized by comprising:

a motor,

A rotary shaft for transmitting the driving force of the motor,

A blower fan fixed by the rotating shaft,

A bearing portion for receiving the rotary shaft at an end portion of the rotary shaft opposite to the motor via the blower fan,

the bearing portion includes:

a bearing member for rotatably receiving the rotating shaft; and

a fixing portion for fixing the bearing member,

the fixing portion fixes the bearing member to a surface orthogonal to the rotation axis and a surface parallel to the rotation axis.

2. The air supply arrangement as recited in claim 1,

the fixing portion fixes the bearing member by sandwiching two surfaces of the bearing member orthogonal to the rotation shaft from both sides.

3. The blower according to claim 1 or 2, wherein the bearing portion is provided to be attachable to and detachable from a main body of the blower in a direction orthogonal to the rotation axis.

4. An air conditioner having an air blowing device, wherein the air blowing device is the air blowing device according to any one of claims 1 to 3.