JP7039898B2 - Indoor unit of air conditioner - Google Patents

Description

The present invention relates to an indoor unit of a ceiling-hung type or ceiling-embedded type air conditioner.

As shown in FIG. 6, in the ceiling-embedded air conditioner indoor unit 100, the exterior housing 110 includes a top panel 111, a bottom panel 112, a right side panel 113, a left side panel 114, and a back panel 115. Has been done. A suction port 119 to which a grill 118 equipped with a filter is mounted is provided on the back panel 115 side of the bottom panel 112, and an outlet 117 opened and closed by a louver 116 on the side opposite to the back panel 115 of the bottom panel 112. Is provided. Reference numeral 120 is a hanging rod for suspending the indoor unit 100 from the ceiling. (Patent Document 1).

As a frame incorporated inside such an exterior housing 110, a sheet metal chassis 10 as shown in FIGS. 7 and 8 is used. The inside of the chassis 10 is divided into a blower chamber 10A and a heat exchanger chamber 10B by a partition plate 20. Then, in the heat exchanger chamber 10B, the heat exchanger 30 indicated by the alternate long and short dash line is arranged so as to be inclined with respect to the partition plate 20. In the blower chamber 10A, four sirocco fans 40A to 40D mounted so as to be aligned with the four blower openings 21A to 21D formed in the partition plate 20, and a motor 50 for rotationally driving the sirocco fans 40A to 40D. Fan casings 60A to 60D that guide the blown air of the sirocco fans 40A to 40D to the ventilation openings 21A to 21D of the partition plate 20 by individually surrounding the four sirocco fans 40A to 40D from above and below are incorporated.

As shown in FIG. 9, the fan casing 60A has an upper surface casing 61A attached to the partition plate 20 and a lower surface casing 62A coupled to the upper surface casing 61A from below the upper surface casing 61A. 61e and 61f are mounting pieces of the upper surface casing 61A, and the mounting pieces 61e and 61f are mounted on the partition plate 20. Elastic claws 61b2 and 61b3 are formed on the left side surface portion 61b of the upper surface casing 61A, elastic claws 61c2 and 61c3 are formed on the right side surface portion 61c, and locking holes 62b1 and 62b2 are formed on the left side surface portion 62b of the lower surface casing 62A. , Locking holes 62c1 and 62c2 are formed in the right side surface portion 62c. Then, by locking the elastic claws 61b2, 61b3, 61c2, 61c3 of the upper surface casing 61a to the locking holes 62b1, 62b2, 62c1, 62c2 of the lower surface casing 62A, the lower surface casing 62A is coupled to the upper surface casing 61A and the sirocco fan. It will cover 40A from above and below. The fan casings 60B to 60D are similarly configured and cover the sirocco fans 40B to 40D from above and below.

Japanese Patent No. 5961751

However, the larger the indoor unit, the longer the length in the lateral direction (the direction in which the fan casings 60A to 60D are arranged), and the fan casing 60A cantilevered to the partition plate 20 by the mounting pieces 61e and 61f. Since it is attached by the support and the remaining fan casings 60B to 60D are also attached in the same manner, the entire weight of the fan casings 60A to 60D is added to the partition plate 20. For this reason, the partition plate 20 is liable to bend, and the bending causes distortion in the chassis 10, and there is a possibility that gaps and overlaps may occur in the grill 118 and the mounting end of the filter, and the appearance of the indoor unit may be impaired. In addition, the fan casings 60A to 60D may be misaligned with the ventilation openings 21A to 21D of the partition plate 20, and the ventilation performance may vary.

An object of the present invention is to provide an indoor unit of an air conditioner that prevents the partition plate from bending and solves the above-mentioned problems.

In order to achieve the above object, the invention according to claim 1 is a top plate, a back plate that rises from the back end of the top plate, a left side plate that rises from the left end of the top plate, and stands from the right end of the top plate. A chassis having a lower right side plate, a partition plate attached between the left side plate and the right side plate of the chassis to form a ventilation port, a motor, and air coupled to the output shaft of the motor to supply air to the output shaft. A sirocco fan that sucks in from a direction parallel to the sirocco fan and blows out in the centrifugal direction, and a fan chassis that surrounds the sirocco fan so as to guide the blown air of the sirocco fan to the ventilation port of the partition plate. In an indoor unit of an air conditioner, the fan casing is characterized in that one end is attached to the partition plate and the other end is attached to the back plate of the chassis.
The invention according to claim 2 is the indoor unit of the air conditioner according to claim 1, wherein the fan casing is provided with a first mounting portion to be attached to the partition plate at one end thereof, and the back plate at the other end. It has an upper surface casing provided with a second mounting portion to be attached to the upper surface casing, and a lower surface casing coupled to the upper surface casing. It is characterized by being.
According to a third aspect of the present invention, in the indoor unit of the air conditioner according to the second aspect, the second mounting portion has a second mounting piece extending in parallel with the top plate, and the third mounting portion is the same. It is characterized in that it is formed of a third mounting piece cut up from the back plate in the direction of the partition plate so as to be parallel to the top plate.
The invention according to claim 4 is the indoor unit of the air conditioner according to claim 3, wherein the second mounting portion is the second mounting piece from the tip of the second mounting piece in addition to the second mounting piece. A block piece extending in a direction bent by 90 degrees was formed, and when the second mounting portion was mounted on the third mounting portion, the block piece was formed by cutting and raising the third mounting piece. It is characterized by closing the opening.
The invention according to claim 5 is characterized in that, in the indoor unit of the air conditioner according to claim 3 or 4, a fourth mounting piece fixed to the second mounting piece is provided on the lower surface casing. do.
The invention according to claim 6 is the indoor unit of the air conditioner according to claim 2, wherein the second mounting portion faces the other end in a direction perpendicular to the top plate and a direction perpendicular to the partition plate. The third mounting portion is formed of a connecting piece provided on the top plate and a fifth mounting piece provided at the tip of the connecting piece so as to face a direction perpendicular to the top plate and parallel to the partition plate. The sixth mounting piece is formed of a sixth mounting piece and a seventh mounting piece, which are cut up from the back plate and bent so that the tips thereof face each other inside the back plate, and the fifth mounting piece is the back plate and the sixth mounting piece. It is characterized in that it is inserted between the mounting piece and the seventh mounting piece, and the fifth mounting piece is fixed to the sixth mounting piece and the seventh mounting piece.

According to the present invention, since one end of the fan casing is attached to the partition plate and the other end is attached to the back plate of the chassis, the weight of the fan casing is received not only by the partition plate but also by the back plate of the chassis. .. Therefore, it is possible to prevent the partition plate from being bent, and thereby it is possible to prevent the chassis from being distorted. Therefore, it is possible to prevent gaps and overlaps from occurring at the grill of the indoor unit and the mounting end of the filter, and variation in the ventilation performance.

It is a perspective view of the state which the exterior housing of the indoor unit of 1st Embodiment of this invention is removed, and the whole is turned upside down. It is an exploded perspective view of the state which the exterior housing of the indoor unit of 1st Embodiment of this invention is removed, and the whole is turned upside down. It is an exploded perspective view of the fan casing of the indoor unit of 1st Embodiment of this invention in the upside-down state. It is an exploded perspective view of the state which the exterior housing of the indoor unit of 2nd Embodiment of this invention is removed and the whole is turned upside down. It is an exploded perspective view of the fan casing of the indoor unit of the 2nd Embodiment of this invention in the upside-down state. It is a perspective view of the indoor unit of the conventional ceiling-hung type air conditioner. It is a perspective view of the state where the exterior housing of the conventional indoor unit is removed and the whole is turned upside down. It is an exploded perspective view of the state where the exterior housing of the conventional indoor unit is removed and the whole is turned upside down. It is an exploded perspective view of the fan casing of the conventional indoor unit upside down.

<First Example>
1 to 3 show the indoor unit of the first embodiment of the present invention. The chassis 10 is made of sheet metal, and has a top plate 11 located inside the top panel 111 of FIG. 6, a back plate 12 located inside the back panel 115 of FIG. 6, and the inside of the left side panel 114 of FIG. It is composed of a left side plate 13 located in the right side plate 13 and a right side surface plate 14 located inside the right side surface panel 113 in FIG. The back plate 12 is assembled so as to fall from the back end 11a of the top plate 11, the left side plate 13 to fall from the left end 11b of the top plate 11, and the right side plate 14 to fall from the right end 11c of the top plate 11. The inside of the chassis 10 is a blower chamber 10A on the side of the back plate 12 and its back plate 12 by a partition plate 20 attached in parallel with the back plate 12 so as to bridge between the left side plate 13 and the right side plate 14. It is partitioned into a heat exchanger room 10B on the opposite side of the chassis.

Then, the heat exchanger 30 shown by the alternate long and short dash line with respect to the mounting piece 13a cut up from the left side plate 13 inward of the chassis 10 and the mounting piece 14a cut up from the right side plate 14 inward of the chassis 10. Both ends of the are attached. These mounting pieces 13a and 14a are formed obliquely so that the heat exchanger 30 can be mounted in an inclined posture with respect to the top plate 11.

On the back plate 12 of the chassis 10, mounting portions 121A, 121B, 121C, 121D for fixing the fan casings 60A, 60B, 60C, 60D, which will be described later, are formed side by side. As a representative of the mounting portion 121A, the mounting portion 121A is formed of a mounting piece 121a that is cut up from the back plate 12 to the inside of the chassis 10 and bent so as to be parallel to the top plate 11. 121a1 is a mounting hole formed in the mounting piece 121a, and 121a2 is an opening formed by cutting up the mounting piece 121a. Here, the third mounting portion according to the claim is realized by the mounting portions 121A to 121D. Further, the third mounting piece according to claim is realized by the mounting pieces 121a to 121d formed on the mounting portions 121A to 121D.

In the partition plate 20, four ventilation ports 21A, 21B, 21C, 21D that individually communicate between the blower chamber 10A and the heat exchanger chamber 10B are formed side by side along the longitudinal direction of the partition plate 20. There is. Further, a mounting piece 22 for mounting on the left side plate 13 of the chassis 10 is formed at one end of the partition plate 20 in the longitudinal direction, and a mounting piece 23 for mounting on the right side plate 14 of the chassis 10 is formed at the other end. .. Further, a bearing plate 24 having a bearing 24a for supporting the tip of one output shaft 51 of the dual-axis motor 50 is mounted between the mounting piece 22 of the partition plate 20 and the ventilation port 21A, and the mounting piece 23 and the ventilation port are mounted. A bearing plate 25 having a bearing 25a that supports the tip of the other output shaft 52 of the biaxial motor 50 is attached between the 21D and the bearing plate 25. Further, motor mounting plates 26 and 27 for mounting the dual-axis motor 50 are mounted between the ventilation ports 21B and 21C of the partition plate 20.

Two of the four sirocco fans 40A, 40B, 40C, 40D are attached to one output shaft 51 of the dual-axis motor 50, and the remaining two sirocco fans 40C, 40D are the other. It is attached to the output shaft 52 of. The four sirocco fans 40A to 40D suck air from the directions of the output shafts 51 and 52 in the centrifugal direction, that is, the ventilation ports 21A to 21D of the partition plate 20 by rotating the dual shaft motors 50. Blow that air in the direction.

The fan casing 60A has an upper casing 61A and a lower casing 62A that surround the sirocco fan 40A from above and below. The fan casing 60B has an upper casing 61B and a lower casing 62B that surround the sirocco fan 40B from above and below. The fan casing 60C has an upper casing 61C and a lower casing 62C that surround the sirocco fan 40C from above and below. The fan casing 60D has an upper casing 61D and a lower casing 62D that surround the sirocco fan 40D from above and below. Since these fan casings 60A to 60D have a common structure, the details thereof will be described with reference to FIG. 3 on behalf of the fan casing 60A.

The upper surface casing 61A of the fan casing 60A is formed with an upper surface portion 61a, a left side surface portion 61b, a right side surface portion 61c, and an air outlet 61d surrounded by an upper surface portion 61a, a left side surface portion 61b, and a right side surface portion 61c. Then, the ventilation port 61d is attached to the side of the blower chamber 10A by the mounting pieces 61e and 61f so as to surround the upper side (lower side in FIGS. 1 and 2) and both sides of the ventilation port 21A of the partition plate 20. Elastic claws 61b2 and 61b3 for connecting the curved portion 61b1 for sucking air and the lower surface casing 62A are formed on the left side surface portion 61b. Similarly, the curved portion 61c1 and the elastic claws 61c2 and 61c3 are formed on the right side surface portion 61c. Further, on the side of the upper surface portion 61a opposite to the air outlet 61d, an L-shaped mounting portion 61g for mounting on the back plate 12 of the chassis 10 is formed. The mounting portion 61g is composed of a mounting piece 61g1 having a mounting hole 61g11 and a closing piece 61g2 that descends from the mounting piece 61g1. Here, the first mounting portion according to the claim is realized by the mounting pieces 61e and 61f. Further, the second mounting portion according to the claim is realized by the mounting portion 61 g. Further, the second mounting piece according to claim is realized by the mounting piece 61g1.

The lower surface casing 62A of the fan casing 60A is formed with a lower surface portion 62a, a left side surface portion 62b, a right side surface portion 62c, and a mounting piece 62d. On the side of the left side surface portion 62b, an engagement hole 62b1 that engages with the elastic claw 61b2 of the upper surface casing 61A and an engagement hole 62b2 that engages with the elastic claw 61b3 of the upper surface casing 61A are formed. Similar elastic claws are also formed on the right side surface portion 62c, but they are not shown. Here, the fourth mounting portion according to the claim is realized by the mounting piece 62d.

By the way, when assembling the indoor unit of this embodiment, first, as shown in FIG. 2, bearing plates 24 and 25 equipped with bearings 24a and 25a are attached to both sides of the partition plate 20, and the ventilation openings 21A to 21D are first attached. The upper surface casings 61A to 61D of the fan casings 60A to 60D are attached to the same side of the partition plate 20 as the side to which the bearing plates 24 and 25 are attached so as to surround the upper side of the partition plate 20 by the attachment pieces 61e and 61f, respectively. Further, the motor mounting plates 26 and 27 are mounted between the ventilation ports 21B and 21C of the partition plate 20 so as to be aligned with the upper casings 61A to 61D.

Next, after the sirocco fan fans 40A to 40D are fixed to the output shafts 51 and 52 of the dual-axis motor 50, the tip of one output shaft 51 is coupled to the bearing 24a, and the tip of the other output shaft 52 is the bearing 25a. The biaxial motor 50 is attached to the motor mounts 26 and 27 so as to be coupled to the motor mounts 26 and 27. At this time, loosening the mounting state of the bearing plates 24 and 25 on one of the partition plates 20 facilitates the work. As a result of these operations, the upper half (lower half in FIG. 2) of the sirocco fans 40A to 40D fits inside the upper casings 61A to 61D of the fan casings 60A to 60D.

Finally, the lower casings 62A to 62D of the fan casings 60A to 60D are attached to the upper casings 61A to 61D and the back plate 12 of the chassis 10, respectively.

At this time, in the fan casing 60A, the locking hole 62b1 on the left side surface portion 62b side of the lower surface casing 62A engages with the elastic claw 61b2 of the upper surface casing 61A, and the locking hole 62b2 on the left side surface portion 62b side of the lower surface casing 62A is formed. It engages with the elastic claw 61b3 of the upper casing 61A. Further, a locking hole (not shown) on the right side surface portion 62c side of the lower surface casing 62A engages with the elastic claw 61c2 of the upper surface casing 61A, and a locking hole (not shown) on the right side surface portion 62c side of the lower surface casing 62A is the upper surface casing 61A. Engage with the elastic claw 61c3. As a result, the entire circumference of the side of the blower chamber 10B of the ventilation port 21A of the partition plate 20 is surrounded by the fan casing 60A.

Further, since the mounting hole 62d1 of the mounting piece 62d of the lower surface casing 62A matches the mounting hole 61g11 of the mounting piece 61g1 of the mounting portion 61g of the upper surface casing 61A and the mounting hole 121a1 of the mounting piece 121a of the back plate 12 of the chassis 10. Tighten the three mounting holes 62d1, 61g11, 121a1 with screws. At this time, the opening 121a2 of the mounting portion 121A of the back plate 12 of the chassis 10 is closed by the closing piece 61g2 of the lower casing 62A.

As described above, the fan casing 60A is attached to the partition plate 20 and the back plate 12 of the chassis 10. The remaining fan casings 60B to 60D are similarly assembled.

From the above, according to the present embodiment, since one end of the fan casing 60 is attached to the partition plate 20 and the other end is attached to the back plate 12 of the chassis 10, the weight of the fan casing 60 is not only the partition plate 20 but also the chassis 10. It will also be received by the back plate 12 of. Therefore, even if the partition plate 20 has a horizontally long shape, it is possible to prevent bending from occurring in the partition plate 20, and thereby it is possible to prevent distortion from occurring in the chassis 10. Therefore, it is possible to prevent gaps and overlaps from occurring in the grill 18 of the indoor unit and the mounting end of the filter, and variation in the ventilation performance at the ventilation openings 21A to 21D.

In this embodiment, the mounting pieces 62d of the lower casings 62A to 62D of the fan casings 60A to 60D can be omitted.

<Second Example>
4 and 5 show the indoor unit of the second embodiment of the present invention. In this embodiment, instead of the mounting portion 121A of the back plate 12 of the chassis 10 of the first embodiment, the back plate 12 of the chassis 10 is cut and raised so as to extend laterally in FIG. 4 so that the tips face each other. A mounting portion 122A composed of mounting pieces 122a and 122b is formed. Similarly, similar mounting portions 122B to 122D are formed in place of the mounting portions 121B to 121D of the first embodiment. A mounting hole 122a1 is formed in the mounting piece 122a, and a similar mounting hole 122b1 is formed in the mounting piece 122b. 122c is an opening formed by cutting up the mounting piece 122a, and 122d is an opening formed by cutting up the mounting piece 122b. Here, the third mounting portion according to the claim is realized by the mounting portions 122A to 122D. Further, the sixth mounting piece according to claim is realized by the mounting piece 122a, and the seventh mounting piece is realized by the mounting piece 122b.

Further, in the lower surface casing 61A of the fan casing 60A, a T-shaped mounting portion 61h is formed in a plan view instead of the mounting portion 61g of the first embodiment. When the lower surface casing 61A is attached to the partition plate 20, the mounting portion 61h includes a connecting piece 61h2 extending from the lower surface portion 61a so as to be perpendicular to the partition plate 20 and perpendicular to the top plate 11, and the tip of the connecting piece 61h2. A mounting piece 61h1 is provided which is coupled to the partition plate 20 and is formed so as to be parallel to the partition plate 20 and perpendicular to the top plate 11. Mounting holes 61h11 and 61h12 are formed in the mounting piece 61h1. For the remaining fan casings 60B to 60D, similar mounting portions 61h are formed on the lower surface casings 61B to 61D. Here, the second mounting portion according to claim is realized by the mounting portion 61h. Further, the fifth mounting piece according to claim is realized by the mounting piece 61h1.

In this embodiment, when the lower surface casing 61A is attached to the back plate 12 of the chassis 10, the attachment piece 61h1 is placed between the pair of attachment pieces 122a, 122b and the back plate 12 of the attachment portion 122A of the back plate 12 of the chassis 10. Slide and fit. As a result, the mounting hole 122a1 of the mounting piece 122a matches the mounting hole 61h11 of the mounting piece 61h1, and the mounting hole 122b1 of the mounting piece 122b matches the mounting hole 61h12 of the mounting piece 61h1. Therefore, the mounting holes 122a1 and 61h11 can be fixed with screws, and the mounting holes 122b1 and 61h12 can be fixed with different screws from the outside of the back plate 12, whereby the lower surface casing 61A can be attached to the back plate 12 of the chassis 10. be able to. The same applies to the case where the remaining lower surface casings 61B to 61D are attached to the back plate 12 of the chassis 10.

Also in this embodiment, since one end of the fan casing 60 is attached to the partition plate 20 and the other end is attached to the back plate 12 of the chassis 10, the weight of the fan casing 60 is not only the partition plate 20 but also the back plate of the chassis 10. It will be accepted by 12 as well. Therefore, the same effect as that of the first embodiment can be obtained.

<Other Examples>
The indoor units of the first and second embodiments described above are for the indoor unit of the ceiling-mounted air conditioner, but the ceiling-embedded indoor unit also has a suction port. As long as it is provided on the lower surface, the contents of the above embodiment can be applied in exactly the same manner.

100: Indoor unit 110: Exterior casing, 111: Top panel, 112: Bottom panel, 113: Right side panel, 114: Left side panel, 115: Back panel, 116: Louver, 117: Air outlet, 118: Grill , 119: Suction port 10: Casing, 10A: Blower room, 10B: Heat exchanger room, 11: Top plate, 11a: Back end, 11b: Left end, 11c: Right end, 12: Back plate, 121A to 121D, 122A ~ 122D: Mounting part, 13: Left side face plate, 13a: Mounting piece, 14: Right side face plate, 14a: Mounting piece 20: Partition plate, 21A-21D: Ventilation port, 22, 23: Mounting piece, 24, 25: Bearing plate, 24a, 25a: Bearing, 26,27: Motor mounting plate 30: Heat exchanger 40A-40D: Sirocco fan 50: Double-screw motor, 51,52: Output shaft 60A-60D: Fan casing, 61A-61D: Top casing, 61a: upper surface part, 61b: left side surface part, 61b1: curved part, 61b2, 61b3: elastic claw, 61c: right side surface part, 61c1: curved part, 61c2, 61c3: elastic claw, 61d: air outlet, 61e, 61f: mounting piece 61g: Mounting part, 61g1: Mounting piece, 61g2: Blocking piece, 61h: Mounting part, 61h1: Mounting piece, 61h2: Connecting piece, 62A-62D: Bottom casing, 62a: Bottom surface, 62b: Left side surface, 62c: Right side surface, 62d: mounting piece, 62d1: mounting hole

Claims (6)

A chassis including a top plate, a back plate that rises from the back end of the top plate, a left side plate that rises from the left end of the top plate, and a right side plate that rises from the right end of the top plate, and the left side plate of the chassis and the above. A partition plate attached between the right side plate and a ventilation port, a motor, a sirocco fan that is coupled to the output shaft of the motor and sucks air from a direction parallel to the output shaft and blows out in the centrifugal direction, and the sirocco. In an indoor unit of an air conditioner provided with a fan chassis arranged so as to surround the sirocco fan inside so as to guide the blown air of the fan to the ventilation port of the partition plate.
The indoor unit of an air conditioner is characterized in that one end of the fan casing is attached to the partition plate and the other end is attached to the back plate of the chassis. In the indoor unit of the air conditioner according to claim 1,
The fan casing is coupled to an upper surface casing provided with a first mounting portion attached to the partition plate at one end and a second mounting portion attached to the back plate at the other end. An indoor unit of an air conditioner having a lower casing and a back plate provided with a third mounting portion to which the second mounting portion is mounted. In the indoor unit of the air conditioner according to claim 2,
The second mounting portion has a second mounting piece extending parallel to the top plate, and the third mounting portion is cut from the back plate toward the partition plate so as to be parallel to the top plate. 3 An indoor unit of an air conditioner characterized by being formed of mounting pieces. In the indoor unit of the air conditioner according to claim 3,
In the second mounting portion, in addition to the second mounting piece, a closed piece extending from the tip of the second mounting piece in a direction bent 90 degrees with respect to the second mounting piece is formed, and the second mounting portion is formed. An indoor unit of an air conditioner, characterized in that, when attached to the third mounting portion, the closing piece closes an opening formed by cutting and raising the third mounting piece. In the indoor unit of the air conditioner according to claim 3 or 4.
An indoor unit of an air conditioner, characterized in that a fourth mounting piece fixed to the second mounting piece is provided on the lower surface casing. In the indoor unit of the air conditioner according to claim 2,
The second mounting portion is a connecting piece provided at the other end of the top plate so as to be perpendicular to the top plate and perpendicular to the partition plate, and the second mounting portion is perpendicular to the top plate and parallel to the partition plate. It is formed by a fifth mounting piece provided at the tip of the connecting piece so as to face a direction.
The third mounting portion is formed of a sixth mounting piece and a seventh mounting piece that are cut up from the back plate and bent so that the tips thereof face each other inside the back plate.
The fifth mounting piece is inserted between the back plate, the sixth mounting piece, and the seventh mounting piece, and the fifth mounting piece is fixed to the sixth mounting piece and the seventh mounting piece. The indoor unit of the air conditioner is characterized by that.

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