JP7347982B2 - Air blower, indoor unit of air conditioner - Google Patents

Description

The present invention relates to an air blower and an indoor unit of an air conditioner equipped with the air blower.

For example, Patent Document 1 discloses a configuration in which an indoor unit of an air conditioner including a blower device includes a plurality of sirocco fans as blower fans. Each of the plurality of sirocco fans is housed inside a casing. The casing has circular suction ports on both sides in the axial direction of the cylindrical shape of the sirocco fan, and a rectangular air outlet at the tip of the bell mouth formed in a protruding manner. The casing is a member necessary to increase the pressure and blow out the air sucked in by the rotation of the blower fan from the outlet.

Usually, the casing is divided into two parts so as to accommodate the sirocco fan therein, and in the configuration of Cited Document 1, the casing is divided into upper and lower parts, and consists of two parts: the upper casing and the lower casing. The upper casing and the lower casing are fixed to the cabinet.

Also fixed to the cabinet are a fan motor that drives the blower fan, and a bearing that rotatably supports a rotating shaft that transmits the driving force of the fan motor to the blower fan. In the configuration of Patent Document 1, a bearing device having a bearing is attached to a rotating shaft, and a support device that supports the bearing device is fixed to a cabinet.

JP2012-97930A

However, in the configuration of Patent Document 1, in which the upper and lower parts of the casing are each fixed to the cabinet, the number of parts increases and the number of assembly steps increases. In addition, in a configuration in which the casing, fan motor, bearings, or supports, etc. are fixed to the cabinet, if the cabinet does not have sufficient rigidity, even if the axis is aligned during assembly, the rotation that connects the fan motor and bearing Axis misalignment occurs. When misalignment occurs in the rotating shaft, vibration and noise are likely to occur. The cabinet must have sufficient rigidity to suppress vibration and noise and allow the blower fan to rotate stably.

Further, axis alignment is the work of aligning the fan motor and the bearing or support, and high positional accuracy is required for the mounting position of each component during assembly. Further, the casing also needs to be positioned in an appropriate position with respect to the blower fan housed therein. In a configuration including a plurality of blowing fans like the configuration of Patent Document 1, the number of casings increases, so the number of parts that need to be aligned becomes extremely large.

An object of one aspect of the present invention is to realize a blower device that can reduce the number of parts, easily align parts, and stably rotate a blower fan.

In order to solve the above problems, an air blower according to one aspect of the present invention includes: a first surface including a suction opening; a second surface different from the first surface; and an opening that constitutes a blowout opening. a cabinet including a motor, a rotating shaft that transmits the driving force of the motor, a plurality of blower fans that are fixed to the rotating shaft , a suction port that communicates with the suction opening, and an air outlet that communicates with the air outlet. a plurality of casings each accommodating the plurality of blower fans in an internal housing space, and a motor fixing member fixing the motor, each of the casings having a plurality of casings each accommodating the plurality of blower fans in an internal housing space, and a motor fixing member fixing the motor, each of the casings having a plurality of casings extending from the second surface to the opening. a pair of protrusions protruding toward each other to form an end of the air outlet; the pair of protrusions and the second surface between the pair of protrusions form the accommodation space; Both the pair of protrusions, which are a part of the motor fixing member , and a part of the motor fixing member are integrally molded with the cabinet.

According to one aspect of the present invention, it is possible to realize a blower device that reduces the number of parts, allows easy positioning of the parts, and allows stable rotation of the blower fan.

1 is a perspective view of a blower device according to Embodiment 1 of the present invention, with the front side having an air outlet facing forward. It is a perspective view showing a state in which parts on the lower side of the air blower are removed, with the front side having the air outlet facing upward. It is a front view of the fan connection object removed from the said air blower. It is a longitudinal cross-sectional view of the above-mentioned blower device. It is a perspective view of the cabinet of the above-mentioned air blower, and the front side which has an air outlet is faced up. It is a longitudinal cross-sectional view of the above-mentioned cabinet. It is a perspective view showing a state in which the lower casing and the lower motor cover are attached to the above-mentioned cabinet, with the front side having the blowout opening facing upward. FIG. 3 is a perspective view showing a state in which a lower casing and a lower motor cover are attached to the cabinet. FIG. 3 is a perspective view of the bottom of the casing. FIG. 3 is a perspective view of the underside of the motor cover. FIG. 2 is a perspective view of an indoor unit of an air conditioner according to a second embodiment. FIG. 3 is a cross-sectional perspective view showing the internal structure of the indoor unit.

[Embodiment 1]
Hereinafter, one embodiment of the present invention will be described in detail. In this embodiment, a blower device installed in an indoor unit of an air conditioner will be exemplified.

(Structure of blower device 1)
FIG. 1 is a perspective view of a blower device 1 according to Embodiment 1, with the front side having a blowout opening 53 facing forward. FIG. 2 is a perspective view showing a state in which the parts on the lower side of the blower device 1 are removed, with the front side having the blowout opening 53 facing upward. Note that FIG. 3 is a front view of the fan connector 2 removed from the air blower 1. FIG. 4 is a longitudinal cross-sectional view of the blower device 1. As shown in FIG.

As shown in FIGS. 1 and 2, the blower device 1 includes a cabinet 10, and four blower fans 4 and one fan motor 3 arranged in the cabinet 10 along the longitudinal direction. The fan motor 3 is a double-shaft motor, and is located in the center of four blower fans 4 arranged in a row, and two blower fans 4 are connected to one motor shaft 3a.

As shown in FIG. 2, the blower fan 4 is a so-called sirocco fan having a configuration in which two impellers 4a are connected by one common disk wall 4b. A joint member 5 for fixing the blower fan 4 to the rotating shaft is provided at the center of the disk wall 4b so as to protrude from both sides. The four blower fans and the fan motor 3 are connected (integrated) via a joint member 5 and shaft members 6 and 7 that constitute a rotating shaft. Hereinafter, the structure in which the blower fan 4, fan motor 3, and rotating shaft are connected will be referred to as a fan connection 2.

As shown in FIG. 3, motor shafts 3a on both sides of the fan motor 3 are connected to joint members 5 on the fan motor 3 side of two ventilation fans 4 located next to the fan motor 3. One end side of the shaft member 6 is connected to a joint member 5 on the opposite fan motor 3 side of the two blower fans 4 from the fan motor 3 side. The other end of the shaft member 6 is connected to a joint member 5 on the side of the fan motor 3 of the blower fan 4 located next to each other. One end side of the shaft member 7 is connected to the joint member 5 on the side opposite to the fan motor 3 of the two adjacent blower fans 4.

The motor shaft 3a and shaft members 6, 7 are connected to the joint member 5 of the blower fan 4 by screws with the ends of the motor shaft 3a and shaft members 6, 7 inserted into the joint member 5. . By firmly connecting the fan motors 3 with screws, the rotational force of the fan motor 3 can be transmitted to the plurality of blower fans 4 without causing misalignment. Hereinafter, one shaft composed of the motor shaft 3a, the shaft members 6 and 7, and the plurality of joint members 5 will be referred to as a rotating shaft 8. The rotating shaft 8 transmits the driving force of the fan motor 3.

A bearing portion 20 is attached to the other end side of each shaft member 7 corresponding to both ends of the rotating shaft 8 . The bearing section 20 includes a bearing (not shown) that rotatably receives the end of the rotating shaft 8 and a support member that supports the bearing. The bearing portions 20 attached to both ends of the rotating shaft 8 are detachably provided to fixing portions 30 provided at both longitudinal ends 10a of the cabinet 10 shown in FIG. The fan connector 2 can be attached to the cabinet 10 by fitting the bearing part 20 into the insertion hole 31 (see FIG. 7) formed in the fixing part 30 and having an open lower face from the lower face side (lower side). Although not shown, the bearing part 20 and the fixing part 30 have a temporary fixing structure, and can be temporarily fixed by fitting the bearing part 20 into the insertion hole 31 of the fixing part 30. can.

Further, as shown in FIGS. 1 and 3, each blower fan 4 is housed in a casing 11 provided for each fan. The casing 11 has circular suction ports 11a on both sides of the cylindrical blower fan 4 in the axial direction, and a rectangular air outlet 11c at the tip of a protruding bell mouth 11b.

In this embodiment, as shown in FIG. 1, the casing 11 is divided into two parts: an upper casing 11-1 that covers the upper half of the blower fan 4, and a lower casing 11-2 that covers the lower half of the blower fan 4. There is. The motor cover (motor fixing member) 12 that fixes the fan motor 3 is also divided into an upper motor cover 12-1 that covers the upper half of the fan motor 3 and a lower motor cover 12-2 that covers the lower half of the fan motor 3. It is divided into two parts. Of these, the four upper casings 11-1 and the upper motor cover 12-1 are integrally molded with the cabinet 10.

(Cabinet 10, lower casing 11-2, and lower motor cover 12-2)
FIG. 5 is a perspective view of the cabinet 10 of the air blower 1, with the front side having the air outlet 53 facing upward. FIG. 6 is a longitudinal sectional view of the cabinet 10. FIG. 7 is a perspective view showing a state in which the lower casing 11-2 and the lower motor cover 12-2 are attached to the cabinet 10, with the front side having the blow-off opening 53 facing upward. FIG. 8 is a perspective view showing a state in which the lower casing 11-2 and the lower motor cover 12-2 are attached to the cabinet 10, with the front side having the air outlet 53 facing forward. FIG. 9 is a perspective view of the lower casing 11-2, and FIG. 10 is a perspective view of the lower motor cover 12-2.

As shown in FIGS. 5 and 6, the cabinet 10 is integrally formed with four casing tops 11-1 and one motor cover top 12-1. In other words, the four upper casings 11-1, the upper motor cover 12-1, and the cabinet 10 are made of the same resin material, and are molded by pouring the resin material into one mold. The upper casing 11-1 has an upper half of the suction port 11a and a bell mouth 11b, and includes an upper end portion 11ct of the air outlet 11c.

Then, as shown in FIGS. 7 and 8, four lower casings 11-2 and one lower motor cover 12-2 are attached to the cabinet 10. Specifically, a lower casing 11-2, which is a separate component, is fitted and fixed to the upper casing 11-1 integrally molded into the cabinet 10. Similarly, a lower motor cover 12-2, which is a separate component, is fitted and fixed to the upper motor cover 12-1 integrally molded on the cabinet 10.

As shown in FIG. 9, the lower casing 11-2 has a lower half of the inlet 11a and includes a lower end 11cu of the outlet 11c. Reference numeral 900 is a perspective view showing the inside of the lower casing 11-2, and reference numeral 901 is a perspective view showing the outside of the lower casing 11-2. As shown by reference numerals 900 and 901, a part 13a of the outer shell part 13 (see FIGS. 1 and 8) forming the outer shell of the blower 1 is located on the lower end 11cu side of the air outlet 11c in the lower casing 11-2. It is provided in one piece (integration). Note that the part 13a of the outer shell part 13 does not need to be made of the same material as the lower casing 11-2, and may be attached to the lower end 11cu side of the air outlet 11c in the lower casing 11-2 with a screw or the like. . A portion 13a of the outer shell part 13 also serves as a handle for the operator to grasp when removing the lower casing 11-2 from the cabinet.

Further, at the end of the lower casing 11-2 opposite to the lower end 11cu side of the air outlet 11c, an engagement hole 10b (see FIG. 5) that engages with a mounting hole 10b (see FIG. 5) formed at the lower rear surface of the cabinet 10 is provided. A claw 11-2a is provided. The engaging claw 11-2a is fixed to the cabinet 10 by being engaged with the mounting hole 10b (see FIG. 5). Furthermore, an insertion claw 11-2b that is inserted into a receiving portion (not shown) on the cabinet 10 side is formed in the suction port 11a in the lower casing 11-2.

On the other hand, as shown in FIG. 10, the lower motor cover 12-2 has a lower half of a shaft opening 12a through which the motor shaft 3a projects. A fixing piece 12-2a for fixing to the upper motor cover 12-1 integrally molded in the cabinet 10 is formed at the circumferential end of the lower motor cover 12-2. Reference numeral 1000 is a perspective view showing the inside of the lower motor cover 12-2, and reference numeral 1001 is a perspective view showing the outside of the lower motor cover 12-2. The lower motor cover 12-2 is fixed to the upper motor cover 12-1, which is integrally molded on the cabinet 10, with a fixing piece 12-2a abutting against the upper motor cover 12-1 using screws or the like.

The fan motor 3 is housed inside the motor cover 12 with the motor shaft 3a protruding. The fan motor 3 has a protruding base portion (non-rotating) of the motor shaft 3a fixed to the motor cover 12 via a rubber member (not shown) fitted into the shaft opening 12a (see FIG. 3).

As shown in FIG. 4, the casing 11 and the motor cover 12 are divided along a dividing line L through which the axis P of the rotating shaft 8 passes. The casing 11 and the motor cover 12 are divided into two along a plane parallel to the axis P passing through the axis P of the rotating shaft 8 .

As a more preferable configuration, in this embodiment, as shown in FIG. 5 and FIG. It has a flat portion H continuous in the front-rear direction on the left and right surfaces corresponding to both end portions 10a. That is, the cabinet 10 has a suction opening 52 on the top surface and an outlet opening 53 on the front surface. Moreover, the cabinet 10 has a rear surface 10c that forms a rear wall corresponding to a plane portion H that continues in the left-right direction. Furthermore, in addition to the rear surface 10c, the cabinet 10 has a flat portion H that continues in the left-right direction, which is also the longitudinal direction, on the front surface, and also has a flat portion H that continues in the front-rear direction on the left and right surfaces. A fixing part 30 for fixing the bearing part 20 of the fan connector 2 is integrally formed on the flat part H on the left and right surfaces.

(Detachment of fan connection 2)
Next, attachment and detachment of the fan connector 2 to the cabinet 10 will be explained using FIGS. 1, 2, and 3. First, removal of the fan connector 2 will be explained.

When removing the fan connection 2, first remove the lower parts such as the four lower casings 11-2, one lower motor cover 12-2, and the outer shell part 13, which are located on the lower side of the blower 1 (Fig. (see 1). With this, the fan coupling member 2 is brought into a detachable state as shown in FIG. Note that since the part 13a of the outer shell part 13 is provided integrally with the lower casing 11-2, it can be removed together by removing the lower casing 11-2.

Next, screws (not shown) screwing together the bearing part 20 and the fixing part 30 on the cabinet 10 side are removed at both ends of the fan connector 2. Although not shown, the bearing part 20 and the fixing part 30 have a temporary fixing structure, so even if the screws on both sides of the fan coupling part 2 are released, the fan coupling part 2 will not be affected by its own weight. There is no need for the worker to hold on to the product, as there is no chance of it falling. After removing the screws, the temporary fixing is released and the bearing part 20 is pulled out from the fixed part 30.

On the other hand, at the time of installation, both ends of the fan coupling object 2 are grasped, the bearing part 20 is inserted into the fixing part 30, and temporary fixing is performed using the above-described temporary fixing structure. After that, the bearing part 20 is screwed to the fixed part 30. Thereafter, the four lower casings 11-2, one lower motor cover 12-2, outer shell parts 13, and other lower surface parts (see FIG. 1) are attached to the lower surface of the blower 1. Since the part 13a of the outer shell part 13 is provided integrally with the lower casing 11-2, it can be attached together by attaching the lower casing 11-2.

(effect)
As described above, in the blower device 1, the plurality of upper casings 11-1 and the upper motor cover 12-1 are integrally molded into the cabinet 10. This reduces the number of parts, eliminates the need for the process of attaching the upper casing 11-1 and the upper motor cover 12-1 to the cabinet 10, and simplifies the assembly process.

In addition to the effect of reducing the number of parts, by integrally molding the upper casing 11-1 and the upper motor cover 12-1 to the cabinet 10, the rigidity (strength) of the cabinet 10 can be increased. This makes it difficult for the cabinet 10 to undergo deformation such as twisting or warping, maintains axis alignment for a long period of time during assembly, and suppresses the generation of vibration and noise caused by misalignment of the rotation axis of the blower fan. can be rotated stably.

Moreover, a part of the casing 11 and the motor cover 12 are built into the cabinet 10, and the remaining parts of the casing 11 and the motor cover 12 are fitted together to complete the casing 11 and the motor cover 12. Therefore, there is no misalignment unlike in the case where the casing 11 and motor cover 12, which are separate parts, are attached to the cabinet, and alignment is easy.

Furthermore, in this embodiment, the fixing part 30 to which the bearing part 20 attached to the rotating shaft 8 of the fan coupling object 2 is attached is also integrally molded into the cabinet 10, and the fixing part 30 and the cabinet 10 are integrated. There is no positional shift between them. As a result, it is possible to eliminate misalignment of the casing 11, motor cover 12, and fixing part 30 with respect to the cabinet 10, and the axis of the rotating shaft 8 of the fan coupling object 2 and the position between each component can be prevented from shifting. The structure can be easily aligned.

Further, in the above configuration, the casing 11 and the motor cover 12 are divided at the dividing line L through which the axis of the rotating shaft 8 passes. Therefore, even if the upper casing 11-1 and the upper motor cover 12-1 are built in, the problem that it becomes difficult to extract the cabinet 10 from the mold during manufacture does not occur.

As a more preferable configuration, in this embodiment, the front surface having the blow-off opening 53 has a flat portion H that continues in the left-right direction, which is also the longitudinal direction, and the left and right surfaces corresponding to both ends 10a in the longitudinal direction have It is configured to have a plane portion H that continues in the front-rear direction. As a result, the rigidity of the cabinet 10 can be effectively increased compared to a flat cabinet mainly having the rear surface 10c forming the rear wall, and a strong structure with almost no twisting or warping can be achieved.

Furthermore, since the casing 11 and the motor cover 12 are divided vertically, the fan connector 2 can be attached and detached from below the blower 1. Regardless of whether it is a wall-mounted type or a ceiling-mounted type, the lower part of the blower is an open space, so by configuring it to be installed and removed from below, there is no need to work behind the ceiling, and there is no need to work on the ceiling. It becomes possible to attach and detach even if there is not enough space in between or on the sides.

(Modified example)
In the blower device 1 of the first embodiment, the plurality of upper casings 11-1 and the upper motor cover 12-1 are integrally molded into the cabinet 10. However, for example, a configuration in which only the plurality of upper casings 11-1 or only the upper motor cover 12-1 is integrally molded with the cabinet 10 is also within the scope of the invention. Similarly, the configuration is not limited to all of the plurality of casing tops 11-1 being integrally molded with the cabinet 10.

Further, in the air blower 1 of the above embodiment, the lower casing 11-2 is provided integrally with the part 13a of the outer shell part 13, but the lower motor cover 12-2 is also integrated with the part 13a of the outer shell part 13. It may be provided integrally.

Further, in the blower device 1 of the above embodiment, the casing 11 and the motor cover 12 are divided in the vertical direction, but the direction is not limited to the vertical direction.

Further, in the blower device 1 of the above embodiment, an example of a plurality of sirocco fans as the blower fan has been described, but the present invention is not limited to this, and the present invention can be applied to cross flow fans etc. can do.

[Embodiment 2]
Other embodiments of the invention will be described below. For convenience of explanation, members having the same functions as the members described in the above embodiment are given the same reference numerals, and the description thereof will not be repeated.

In this embodiment, an indoor unit of an air conditioner including the air blower 1 described in Embodiment 1 will be described. FIG. 11 is a perspective view of an indoor unit 50 of an air conditioner according to the second embodiment. FIG. 12 is a cross-sectional perspective view showing the internal structure of the indoor unit 50.

As shown in FIGS. 11 and 12, the indoor unit 50 includes a cabinet 10 and a fan connection 2 that constitute the above-mentioned blower 1, and has a heat exchanger 51 on the front side of the fan connection 2. . A suction opening 52 is provided on the upper surface of the cabinet 10, and a filter 54 is installed in the suction opening 52.

The front opening of the cabinet 10 serves as a blowout opening 53. A plurality of air outlets 11c of a plurality of casings 11 corresponding to a plurality of blower fans 4 are arranged toward an air outlet 53. The heat exchanger 51 is arranged between the blower outlet 11c and the blower opening 53.

The heat exchanger 51 is arranged in an inclined state in which the upper part is in a forward position than the lower part, and the lower part is arranged in a state close to the blower fan 4. By arranging the heat exchanger 51 in an inclined state, the surface area can be increased while suppressing the height of the indoor unit 50 compared to a case in which the heat exchanger 51 is arranged in a vertical state. A drain pan 55 is provided below the heat exchanger 51 to receive water (drain water) generated by heat exchange in the heat exchanger 51.

Furthermore, a main panel 56 for opening and closing the air outlet 53 is provided on the front surface of the cabinet 10. The main panel 56 is formed into a plate shape that is gently curved between an upper edge and a lower edge. The main panel 56 is curved in a concave direction when viewed from the front. The main panel 56 is driven by a drive mechanism (not shown) having, for example, two left and right arms supporting the main panel 56 and a motor. The main panel 56 closes the blow-off opening 53 when the indoor unit 50 is stopped, and opens when the indoor unit 50 is in operation.

Further, in the figure, a member indicated by reference numeral 57 is a sub-panel, and the sub-panel 57 is also in an open state during operation. Note that during cooling, the main panel 56 is normally in a state where the upper end is open with the lower end side as the rotation axis (the state shown in FIGS. 1 and 2), and during heating, the lower end is normally in the state with the upper end side as the rotation axis and the lower side is open. becomes.

〔summary〕
A blower device 1 according to aspect 1 of the present invention includes a cabinet 10, a motor (fan motor 3), a rotating shaft 8 that transmits the driving force of the motor, and a blower fan 4 fixed to the rotating shaft 8. A casing 11 that accommodates the blower fan 4 and a motor fixing member that fixes the motor, and a part of the casing 11, a part of the motor fixing member, or both are integrally molded with the cabinet 10. It is characterized by the presence of

In the blower device 1 according to the second aspect of the present invention, in the first aspect, the casing 11 or the motor fixing member or both are further divided into two parts, and one of the divided parts is integrally molded with the cabinet 10. It can also be configured.

In the air blowing device 1 according to the third aspect of the present invention, in the second aspect, the casing 11 or the motor fixing member, or both, is further arranged such that the casing 11 or the motor fixing member, or both, are arranged in a plane parallel to the axis passing through the axis of the rotating shaft 8. It is also possible to have a divided configuration.

In the air blower 1 according to the fourth aspect of the present invention, in the second or third aspect, the casing 11 or the motor fixing member, or both, may be further divided into two in the vertical direction.

The air blower 1 according to aspect 5 of the present invention is provided in any one of aspects 1 to 4, further comprising: a suction opening 52 on the top surface, an outlet opening 53 on the front surface, a rear surface 10c, and a continuous portion on the front surface in the left-right direction. It is also possible to have a configuration having a flat portion H that is continuous in the front-rear direction on the left and right surfaces.

The air blower 1 according to aspect 6 of the present invention, in any one of aspects 1 to 4, further includes a portion of the casing 11, the motor fixing member, or both that is not integrally molded with the cabinet 10. It is also possible to adopt a configuration in which a part 13a of the outer shell part 13 forming the outer shell of the air blower 1 is integrated.

In the blower device 1 according to a seventh aspect of the present invention, in the fourth aspect, the motor, the rotating shaft 8, and the blower fan 4 are connected to each other and are attached to and detached from the cabinet 10 from the bottom side. You can also do that.

The air blower 1 according to aspect 8 of the present invention may be configured such that in any one of aspects 1 to 7, the ventilation fan 4 is a sirocco fan, and includes a plurality of sirocco fans.

An indoor unit 50 of an air conditioner according to aspect 9 of the present invention is characterized by including the blower device 1 according to any one of aspects 1 to 8.

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

1 Blower device 2 Fan connection 3 Fan motor 3a Motor shaft 4 Blower fan 8 Rotating shaft 10 Cabinet 11 Casing 11-1 Upper casing 11-2 Lower casing 11-2a Engagement claw 11a Suction port 11b Bell mouth 11c Air outlet 11ct Upper end Part 11cu Lower end 12 Motor cover 12-1 Upper motor cover 12-2 Lower motor cover 12-2a Fixed piece 12a Shaft opening 13 Outer part 13a Part 20 Bearing part 30 Fixed part 31 Insertion hole 50 Indoor unit 51 Heat exchanger 52 Suction opening 53 Blowout opening

Claims (9)

A cabinet including a first surface including a suction opening, a second surface different from the first surface, and an opening forming an outlet opening;
motor and
a rotating shaft that transmits the driving force of the motor;
a plurality of blower fans fixed to the rotating shaft;
a plurality of casings each having a suction port communicating with the suction opening and a blower outlet communicating with the blower opening, each housing the plurality of blower fans in an internal housing space ;
a motor fixing member for fixing the motor;
Each of the casings includes a pair of protrusions that protrude from the second surface toward the opening and form an end of the air outlet, and the first and second protrusions are located between the pair of protrusions and the pair of protrusions. two sides form the accommodation space;
An air blowing device characterized in that both the pair of protrusions, which are part of each of the casings , and a part of the motor fixing member are integrally molded with the cabinet. 2. The blower device according to claim 1, wherein each of the casings is divided into two parts, and one of the divided parts including the pair of protrusions is integrally molded with the cabinet. The blower device according to claim 2, wherein each of the casings is divided into two along a plane passing through the axis of the rotating shaft and parallel to the axis. The blower device according to claim 2 or 3, wherein each of the casings is vertically divided into two parts. The first surface is a top surface, the second surface is a rear surface, and the opening is located on the front surface,
The air blowing device according to any one of claims 1 to 4, wherein the cabinet further has a planar portion continuous in the left-right direction on the rear surface and the front surface, and a planar portion continuous in the front-rear direction on the left and right surfaces. . Claim 1, wherein a portion of an outer shell part forming an outer shell of the air blower is integrated into a remaining portion of each of the casing and the motor fixing member that is not integrally molded with the cabinet. The blower device according to any one of items 4 to 4. 5. The blower device according to claim 4, wherein the motor, the rotating shaft, and the blower fan are connected to each other and are attached to and detached from the cabinet from the bottom side. The blower fan is a sirocco fan,
The blower device according to any one of claims 1 to 7, comprising a plurality of sirocco fans. An indoor unit of an air conditioner, comprising the blower device according to claim 1 .

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