JP2021038865A - Indoor unit of air conditioner - Google Patents

Abstract

To provide an indoor unit of a ceiling suspension type air conditioner capable of securing strength of a casing, while enhancing designability by providing round shapes on both sides on a front end of the indoor unit.SOLUTION: In a casing 3 which is fixed on a ceiling and which includes a rectangular upper surface plate 7 along an indoor ceiling and a pair of side brackets 9a, 9b rising toward a floor surface side from left and right ends when the longer direction of the upper surface plate is defined as the left-to-right direction, a heat exchanger 5 and a blower fan 4 are arranged. In an indoor unit of air conditioner, in front of the upper surface plate, a tabular top panel 13 is arranged extending in the left-to-right direction, and a pair of side panels 14a, 14b for covering the pair of side brackets is mounted. Then, a pair of connection parts 32 is provided for connecting end parts in the left-to-right direction of the top panel and the pair of side brackets respectively, and top panel side end parts of the pair of connection parts are arranged at the position closer to the ceiling surface than side bracket side end parts of the pair of connection parts.SELECTED DRAWING: Figure 4

Description

The present invention relates to an indoor unit of a ceiling-suspended air conditioner suspended from an indoor ceiling.

As an indoor unit of a ceiling-hung type air conditioner, for example, the device of Patent Document 1 is known.
In the indoor unit of Patent Document 1, a heat exchanger and a blower are arranged in a casing. The casing is fixed to the ceiling surface and includes a rectangular upper surface plate along the indoor ceiling and a pair of side brackets that rise from the left and right ends toward the floor surface side when the longitudinal direction of the upper surface plate is the left-right direction. ing.
When the lateral direction of the top plate is the front-back direction, a plate-shaped top panel extending in the left-right direction is arranged in front of the top plate, and a pair of side panels covering the pair of side brackets are detachable. It is attached to. These pair of side panels are detachably attached to the left side bracket and the right side bracket while abutting their own ends against each of both ends of the top panel.

Japanese Unexamined Patent Publication No. 2014-173760

By the way, the larger the ceiling-hung type indoor unit, the longer the width dimension becomes, which impairs the appearance. In this case, the width of the indoor unit can be made shorter by devising the design of the casing of the indoor unit (for example, by adopting a structure in which both sides of the casing appear to be gradually thinner). It is conceivable to do so. However, for example, when rounded shapes are provided on both sides of the indoor unit described in Patent Document 1, how to maintain the strength of the casing having a complicated shape becomes an issue.
Therefore, the present invention has been made to solve such a problem, and it is possible to secure the strength of the casing while enhancing the design by providing large rounded shapes on both sides of the front end of the indoor unit. The purpose is to provide an indoor unit of a ceiling-mounted air conditioner.

In order to achieve the above object, the indoor unit of the air conditioner according to one aspect of the present invention is fixed to the ceiling surface, and the rectangular upper surface plate along the indoor ceiling and the longitudinal direction of the upper surface plate are set to the left-right direction. This is an indoor unit of an air conditioner in which a heat exchanger and a blower fan are arranged in a casing provided with a pair of side brackets that hang down from the left and right ends toward the floor. Then, in the indoor unit, when the lateral direction of the upper surface plate is the front-rear direction, a plate-shaped top panel extending in the left-right direction is arranged in front of the upper surface plate, and a pair of side panels covering the pair of side brackets are attached and detached. It is installed freely. Here, the top panel has a pair of connecting portions for connecting the left and right end portions of the top panel and the pair of side brackets, and the top panel side end portion of the pair of connecting portions is the side bracket side end portion of the pair of connecting portions. It is located closer to the ceiling than the part.

According to the indoor unit of the air conditioner according to the present invention, the strength of the casing can be ensured while enhancing the design by providing large rounded shapes on both sides of the front end of the indoor unit.

It is a perspective view which shows the indoor unit of the ceiling-hanging type air conditioner which concerns on one Embodiment of this invention. It is a figure which shows the cross-sectional view which cut | cut the indoor unit shown in FIG. 1 along the front-rear direction. It is a figure which shows the internal structure which removed the right side panel on the front right side of the indoor unit shown in FIG. It is a figure which showed the appearance of the front right side of the indoor unit shown in FIG. 1 in a plan view.

Next, an embodiment of the present invention will be described with reference to the drawings. The embodiments shown below exemplify devices and methods for embodying the technical idea of the present invention, and the technical idea of the present invention describes the material, shape, structure, arrangement, etc. of the components. It is not specific to the following. The technical idea of the present invention may be modified in various ways within the technical scope specified by the claims stated in the claims.
For terms indicating directions such as "up", "bottom", "left", "right", "front", and "rear" described in the following description, refer to the directions in the attached drawings. It is used.

[About the configuration of the indoor unit]
As shown in FIG. 1, the indoor unit 1 of the ceiling-suspended air conditioner according to the embodiment of the present invention is suspended from the indoor ceiling by a plurality of suspension rods 2. As shown in FIG. 2, the indoor unit 1 includes a blower fan 4, a heat exchanger 5, and a drain pan 6 in a casing 3. The casing 3 has a substantially rectangular plate-shaped upper surface plate 7 extending in the front-rear direction and the left-right direction and connecting the lower ends of the plurality of hanging rods 2, and a substantially rectangular plate-shaped upper surface plate 7 extending downward from the rear end portion of the upper surface plate 7. The rear surface plate 8, the left side bracket 9a having a substantially rectangular plate shape extending downward so as to cover the left end portions of the upper surface plate 7 and the rear surface plate 8, and the substantially rectangular plate extending so as to cover the right end portions of the upper surface plate 7 and the rear surface plate 8. It is equipped with a plate-shaped right side bracket 9b (see FIG. 3) and has a shape in which the lower part is open.

The blower fan 4 is arranged near the rear surface in the casing 3. Further, the heat exchanger 5 is arranged near the front surface in the casing 3. The drain pan 6 is arranged below the heat exchanger 5 so as to cover the heat exchanger 5 and close a part of the opening below the casing 3. The lower surface of the drain pan 6 is covered with the lower surface panel 10. As shown in FIGS. 1 and 2, the lower surface and the lower surface panel 10 of the drain pan 6 are curved with a predetermined curvature so as to continuously rise from the rear to the front.
The opening below the blower fan 4 and below the casing 3 that is not blocked by the drain pan 6 forms a suction port 11, and the suction port 11 is equipped with a grill 12 provided with a filter (not shown). ..

A top panel 13 formed of a long decorative sheet metal extending in the left-right direction is arranged on the front end edge of the upper surface plate 7 of the casing 3, and the widthwise edge of the top panel 13 is the upper surface plate 7. It is fixed to the front end edge portion, and the left and right end portions of the top panel 13 are fixed to the left side bracket 9a and the right side bracket 9b. Then, the left side bracket 9a and the left side panel 14a formed of the resin molding material while covering the left end portion of the top panel 13 are detachably attached to the left side bracket 9a, and are attached to the right side bracket 9b. Is detachably attached to the right side bracket 9b and the right side panel 14b formed of a resin molding material while covering the right end portion of the top panel 13.
As shown in FIG. 1 and FIG. 4 showing the appearance of the front right side of the indoor unit 1 in a plan view, the front ends of the left side panel 14a and the right side panel 14b are smoothly curved inward in the left-right direction, and the side surfaces thereof. Is bent so as to face the upper surface and is connected to the left and right ends of the top panel 13.

As shown in FIGS. 1 and 2, an outlet 15 is formed in front of the drain pan 6. The air outlet 15 extends in the left-right direction along the tip (front end edge) of the drain pan 6 and the top panel 13. The upper edge of the air outlet 15 is formed by a first air outlet forming member 16 attached to the top panel 13 and extending linearly in the left-right direction. Further, as shown in FIG. 1, a second outlet is formed in which the left end portion and a part of the upper edge of the outlet 15 extend linearly in the vertical direction attached to the left side panel 14a and the upper end is curved inward. It is formed by the member 17. Further, as shown in FIG. 1, the right end portion and a part of the upper edge of the outlet 15 form a third outlet attached to the right side panel 14b so as to extend linearly in the vertical direction and the upper end is curved inward. It is formed by the member 18. Further, the lower end of the air outlet 15 is formed by the tip of the drain pan 6 extending linearly in the left-right direction.

As shown in FIGS. 1 and 2, the air outlet 15 is opened and closed by the wind direction plate 19. As shown in FIG. 2, a plurality of shaft portions 20 are formed on the back surface of the wind direction plate 19. The outlet 15 is opened by rotating the lower end in the forward direction and the upper end in the rear direction around the shaft portion 20, and from the open state of the outlet 15, the lower end is in the rear direction and the upper end is in the front direction around the shaft portion 20. The outlet 15 is closed by rotating in the direction.
Then, the shaft portion 20 provided on the back surface of the right end portion of the wind direction plate 19 is connected to the rotating shaft of the drive motor 21 provided on the right side bracket 9b shown in FIG. 3, and the wind direction plate 19 is driven by the drive motor 21. The air outlet 15 is opened and closed by rotating.

[About the structure where the top panel is fixed to the casing]
Next, the structure in which the top panel 13 is fixed to the upper surface plate 7 of the casing 3, the left side bracket 9a, and the right side bracket 9b will be described with reference to FIGS. 3 and 4.
The top panel 13 includes a rectangular plate-shaped panel main body 22, a plurality of top plate fixing pieces 24 protruding from one side 23 in the width direction of the panel main body 22 and formed at predetermined intervals in the longitudinal direction, and a panel main body 22. The panel edge 26 bent at a right angle from the other side 25 in the width direction and the right end of the panel body 22 extend at a predetermined acute angle θ with respect to one side 23 in the width direction and are orthogonal to the panel body 22. A side that is bent at a right angle from the panel body 22 as a surface that is continuous with the front end of the connecting bracket fixing portion 27 and is orthogonal to the other side 25 in the width direction. A panel tip facing portion 28 is provided. Further, although not shown, the connecting metal fitting fixing portion 27, which extends to the left end portion of the top panel 13 at a predetermined acute angle θ with respect to one side 23 in the width direction and is bent at a right angle from the panel main body 22. A side panel tip facing portion 28 is formed.

In the top panel 13, the top panel corner portion 30 formed by intersecting the one side 23 in the width direction of the right end portion and the connecting bracket fixing portion 27 is arranged so as to face the front end side upper portion 9b1 of the right side bracket 9b. To do. Further, the top panel corner portion 30 formed by intersecting the one side 23 in the width direction of the left end portion and the connecting bracket fixing portion 27 at the left end portion of the top panel 13 is also the upper part of the front end of the left side bracket 9a. Arrange so as to face each other (not shown).
Then, one side 23 in the width direction of the panel main body 22 is arranged along the front end edge portion of the upper surface plate 7 of the casing 3, and a plurality of upper surface plate fixing pieces 24 overlapped with the front end edge portion of the upper surface plate 7 are screwed. Fix it. As a result, the connecting metal fitting fixing portion 27 at the left end of the top panel 13 is arranged facing the left front, and the connecting metal fitting fixing portion 27 at the right end is arranged facing the right front.

Then, a connecting bracket 32 as a pair of connecting portions for connecting the top panel 13 and the pair of side brackets 9a and 9b is fixed between the connecting bracket fixing portion 27 at the right end and the right side bracket 9b. As shown in FIG. 3, the connecting metal fitting 32 and the top panel fixing plate 32a as the top panel side end portion fixed by screws in a state of being in surface contact with the connecting metal fitting fixing portion 27 at the right end portion of the top panel 13. , The bracket fixing plate 32b as the side bracket side end fixed by screws in the state of surface contact with the right side bracket 9b, and the top panel fixing plate 32a and the bracket fixing plate 32b are connected as a metal plate having a predetermined shape. It is provided with a metal fitting body 32c and the like.
Here, in the connecting bracket 32 fixed between the connecting bracket fixing portion 27 at the right end and the right side bracket 9b, the top panel fixing plate 32a is arranged at a position closer to the ceiling surface than the bracket fixing plate 32b. There is.

Further, although not shown, a connecting metal fitting 32 having the same shape is also fixed between the connecting metal fitting fixing portion 27 at the left end and the left side bracket 9a. The connecting metal fitting 32 is also attached to the top panel fixing plate 32a as the top panel side end and the left side bracket 9b, which are fixed by screws in a state of being in surface contact with the connecting metal fitting fixing surface 27 at the left end of the top panel 13. A bracket fixing plate 32b as a side bracket side end fixed by a screw in a surface contact state, and a metal fitting body 32c connected as a metal plate having a predetermined shape between the top panel fixing plate 30a and the bracket fixing plate 30b. , Is equipped.
Here, the top panel fixing plate 32a of the connecting metal fitting 32 fixed between the connecting metal fitting fixing portion 27 at the left end and the left side bracket 9a is also arranged at a position closer to the ceiling surface than the bracket fixing plate 32b. ..

[Structure in which the left and right side panels are mounted on the casing]
Next, the right side panel 14b detachably attached to the right side bracket 9b of the casing 3 will be described with reference to FIG.
As described above, the right side panel 14b is formed by bending the side surface of the right side panel 14b on the front end side so as to be smoothly curved to the left toward the front end and the side surface to face the upper surface. An opening is formed that opens toward the connecting metal fitting fixing portion 27 (and the third air outlet forming member 18) of the panel 13. At the opening edge of this opening, a butt edge 33 that is inclined to the left toward the front end and extends linearly is formed, and an acute-angled portion is formed at a position continuous from the butt edge 33 to the front end. The sharpening prevention portion 34 is formed so that there is no such thing.

When the right side panel 14b is attached to the right side bracket 9b, the top panel 13 is placed on the top of the connecting bracket fixing portion 27 which is inclined to the left toward the front end formed at the right end of the top panel 13. The abutting edge 33 of the right side panel 14b arranged so as to cover the right side is butted so as to be flush with each other, and the sharpening prevention portion 34 is arranged so as to face the side panel tip facing portion 28 of the top panel 13.

Further, although not shown, the left side panel 14a, which is detachably attached to the left side bracket 9a of the casing 3, also has the side surface on the front end side smoothly curved to the right toward the front end, and the side surface faces the upper surface. However, an opening is formed that opens toward the connecting metal fitting fixing portion 27 (and the second outlet forming member 17) on the left side of the top panel 13 of the left side panel 14a. .. Then, at the opening edge portion of this opening, a butt edge portion 33 that is inclined to the right and extends linearly toward the front end is formed, and at a position continuous from the butt edge portion 33 to the front end. A sharpening prevention portion 34 having no acute-angled portion is formed. Then, when the left side panel 14a is attached to the left side bracket 9a, the top panel 13 is attached to the top of the connecting metal fitting fixing portion 27 which is inclined to the right toward the front end formed at the left end of the top panel 13. The butt edge 33 of the right side panel 14b arranged so as to cover the left side of the top panel 13 is butted so as to be flush with each other, and the sharpening prevention portion 34 is arranged to face the side panel tip facing portion 28 of the top panel 13. ..

[About the action and effect of the indoor unit]
Next, the operation and effect of the indoor unit 1 of the ceiling-suspended air conditioner of the present embodiment will be described.
In the indoor unit 1 of the present embodiment, the front end side surfaces of the left side panel 14a and the right side panel 14b, which are detachably attached to the left side bracket 9a and the right side bracket 9b of the casing 3, are oriented in the left-right direction toward the front end. It is formed by being smoothly curved inward and bent so that the side surface faces the upper surface, and the width dimension of the indoor unit 1 looks short, so that the design of the indoor unit 1 can be enhanced.

Further, to fix the top panel 13 on one side 23 in the width direction and the front end edge portion of the upper surface plate 7 of the casing 3, the one side 23 of the panel body 22 of the top panel 13 in the width direction is fixed to the upper surface plate 7 of the casing 3. It is fixed by integrating a plurality of upper surface plate fixing pieces 24 which are arranged along the front end edge portion and overlapped with the front end edge portion of the upper surface plate 7. Further, the connecting metal fitting fixing portion 27 formed at the end portion of the top panel 13 in the left-right direction (longitudinal direction) is fixed to the left side bracket 9a and the right side bracket 9b via the connecting metal fitting 32.

Here, in the connecting bracket 32 fixed between the connecting bracket fixing portion 27 at the right end and the right side bracket 9b, the top panel fixing plate 32a is arranged at a position closer to the ceiling surface than the bracket fixing plate 32b. The top panel fixing plate 32a of the connecting metal fitting 32 fixed between the connecting metal fitting fixing portion 27 at the left end and the left side bracket 9a is also arranged at a position closer to the ceiling surface than the bracket fixing plate 32b. As a result, the side surfaces of the left side panel 14a and the right side panel 14b on the front end side can be smoothly curved inward in the left-right direction toward the front end, and the side surface can be bent so as to face the upper surface. The design of 1 can be enhanced.

Further, since the top panel corner portion 30 of the connecting bracket fixing portion 27 is arranged close to the upper part of the front end of the left side bracket 9a and the right side bracket 9b, the dimension of the top panel 13 in the left-right direction is not shortened. The length of the metal fitting body 32c of the connecting metal fitting 32 (distance between the top panel fixing plate 32a and the bracket fixing plate 32b) is not long, and the bending rigidity and the torsional rigidity of the metal fitting body 32c are sufficiently ensured. As a result, the ends of the top panel 13 in the left-right direction (longitudinal direction) are fixed to the left side bracket 9a and the right side bracket 9b via the connecting metal fitting 32 without causing glare.
Therefore, the top panel 13 can be fixed to the upper surface plate 7, the left side bracket 9a, and the right side bracket 9b of the casing with sufficient mounting strength.

Further, since the connecting metal fitting fixing portion 27 of the top panel 13 extends at a predetermined acute angle θ with respect to one side 23 in the width direction of the panel main body 22, a rectangular shape is formed as a large portion. The shape of the top panel fixing plate 32a of the connecting metal fitting 32 fixed to the connecting metal fitting fixing portion 27 can also be increased, and the bending rigidity and the torsional rigidity of the metal fitting body 32c can be further increased.

Further, the left side panel 14a and the right side panel 14b are placed on the left side bracket 9a and the right side bracket 9b in a state where the connecting metal fitting fixing portion 27 formed at the left and right end portions of the top panel 13 and the butt edge portion 33 are butted against each other. When the joint is detachably attached to, the joint between the connecting bracket fixing portion 27 and the butt edge portion 33 extends inward in the left-right direction toward the front end, so that the joint extends in the front-rear direction. Compared with the conventional indoor unit, the gap between the seams is inconspicuous, and the deterioration of the appearance quality can be prevented.

Further, since the sharpening prevention portion 34 is formed at a position continuous with the front end of the butt edge 33 of the left side panel 14a and the right side panel 14b, the ends of the left side panel 14a and the right side panel 14b are raised so much. Since it is not necessary to form the panel with high accuracy, the manufacturing cost can be reduced, and the work safety when assembling the left side panel 14a and the right side panel 14b can be enhanced.
Although the embodiments of the present invention have been described above, the present invention is not limited to this, and various modifications and improvements can be made.

1 Indoor unit 2 Suspended rod 3 Casing 4 Blower fan 5 Heat exchanger 6 Drain pan 7 Top plate 8 Rear plate 9a Left side bracket 9b Right side bracket 9b 1 Front end upper part of right side bracket 10 Bottom panel 11 Suction port 12 Grill 13 Top panel 14a Left side panel 14b Right side panel 15 Air outlet 16 1st air outlet forming member 17 2nd air outlet forming member 18 3rd air outlet forming member 19 Wind direction plate 20 Shaft 21 Drive motor 22 Panel body 23 In the width direction of the panel body One side 24 Top plate fixing piece 25 The other side in the width direction of the panel body 26 Panel edge 27 Connecting bracket fixing part 28 Side panel tip facing part 30 Top panel corner 32 Connecting bracket (connecting part)
32a Top panel fixing plate (top panel side end)
32b Bracket fixing plate (side bracket side end)
32c Metal fitting body 33 Butt edge 34 Sharpening prevention part θ A predetermined acute angle

Claims (3)

It is provided with a rectangular upper surface plate fixed to the ceiling surface and along the indoor ceiling, and a pair of side brackets that rise from the left and right ends toward the floor surface side when the longitudinal direction of the upper surface plate is the left-right direction. A heat exchanger and a blower fan are arranged in the casing,
When the lateral direction of the top plate is the front-rear direction, a plate-shaped top panel extending in the left-right direction is arranged in front of the top plate, and a pair of side panels covering the pair of side brackets are detachably attached. It is an indoor unit of an air conditioner that is used.
The top panel has a pair of connecting portions for connecting the left and right end portions of the top panel and the pair of side brackets, and the top panel side end portion of the pair of connecting portions is the side bracket side end of the pair of connecting portions. An indoor unit of an air conditioner characterized in that it is placed closer to the ceiling surface than the part. The pair of side panels are placed against the top of the pair of connecting portions of the top panel so that the butt edges formed at the ends of the pair of side panels are flush with each other. The indoor unit of an air conditioner according to claim 1, wherein each side bracket is detachably attached to the side bracket. The indoor unit of an air conditioner according to claim 2, wherein an end portion of the pair of side panels located in front of the abutting edge portion is formed as a sharpening prevention portion having no acute angle portion.

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