JP7065326B2 - Indoor unit, air conditioner - Google Patents

Description

The present invention relates to an air conditioner.

Conventionally, an indoor unit of an air conditioner which is installed on a ceiling and has a main body portion having a heat exchanger and a fan is known (see, for example, Patent Document 1).
Indoor units of this type of air conditioner may be installed in a limited space, for example, in a narrow entrance passage of a single room in a business hotel.

Japanese Patent No. 4426257

When the indoor unit is installed in such a limited space, the piping connecting the outdoor unit and the indoor unit, heat exchangers, fans, and other members are accommodated in the limited space inside the main body. .. Therefore, the maintenance of the indoor unit becomes difficult due to the close distance between these members, and there is still room for improvement.
The present invention solves the above-mentioned problems, and an object of the present invention is to provide an air conditioner capable of easily performing maintenance work of an indoor unit while reducing the size of the indoor unit.

In order to achieve the above object, the present invention relates to an air conditioner comprising an indoor unit installed on a ceiling and an outdoor unit connected to the indoor unit by piping via a connecting portion, wherein the indoor unit is heated. It is composed of a main body portion having a exchanger, a fan, and a decorative panel, and this main body portion is provided adjacent to the first housing portion in which the heat exchanger is arranged and the first housing portion, and is also the first. The space formed by the second housing portion, which is formed smaller than one housing portion and in which the fan is arranged, and is formed by the side surface of the first housing portion and the side surface of the second housing portion, is described. It is characterized in that a connecting portion is arranged.

According to the present invention, since the connecting portion is arranged in the space formed by the side surface of the first housing portion and the side surface of the second housing portion, the indoor unit can be miniaturized and maintenance can be performed using this space. Since it is possible, it is possible to provide an air conditioner capable of easily performing maintenance work on the indoor unit.

An example of a layout diagram of a room in which an indoor unit according to an embodiment of the present invention is arranged. Perspective view of the indoor unit Right side view of the indoor unit Rear view of indoor unit Perspective view near space Perspective view near space Perspective view near space Perspective view near space

In the first invention, the first housing portion in which the heat exchanger is arranged is provided adjacent to the first housing portion, and is formed smaller than the first housing portion, and the fan is arranged. A second housing portion and a pipe connected to the heat exchanger are provided, and the side surface of the second housing portion is recessed inward from the side surface of the first housing portion and is recessed inward. A space is formed in the portion, and at least a part of the pipe extends in the space along the side surface of the second housing portion and is connected to the outdoor unit by the connecting portion in the space. On the side surface of the second housing portion, an opening into which a maintenance device can be inserted when connecting or disconnecting the connecting portion is formed at least at a position facing the connecting portion. It is characterized by that.
According to the present invention, since the connecting portion is arranged in the space formed by the side surface of the first housing portion and the side surface of the second housing portion, the indoor unit can be miniaturized and maintenance can be performed using this space. Since it is possible, it is possible to provide an air conditioner capable of easily performing maintenance work on the indoor unit.

According to the first invention, the air conditioner according to the second invention is characterized in that the side surface of the second housing portion is provided with an opening opening to the space side. According to the present invention, the connecting portion is provided. By providing an opening on the side surface of the second housing portion adjacent to the space to be arranged, the space and the internal space of the second housing portion are connected, and a service space for connecting and disconnecting the connecting portion is performed. Is secured. This service space facilitates the use of maintenance equipment.

The air conditioner according to the third invention is characterized in that, in the second invention, the opening is provided with a removable service plate.
According to the present invention, the connecting work and the disconnecting work of the connecting portion are performed by removing the service plate and securing the service space, but in the normal time when the connecting work and the disconnecting work of the connecting portion are not performed, the service is performed. Since the plate can cover the second housing portion, it is possible to prevent dust and the like from entering the inside of the second housing portion.

The air conditioner according to the fourth aspect of the invention is characterized in that, in the second or third invention, the opening is a part of the side surface of the second housing portion.
According to the present invention, the degree of freedom in the position where the service board is provided is increased, and the service board can be appropriately provided at an appropriate position.

The air conditioner according to the fifth aspect of the invention is characterized in that, in any one of the first to fourth inventions, the pipe is composed of a gas pipe and a liquid pipe, and is arranged at a position where they overlap in the vertical direction. ..
According to the present invention, since the gas pipe and the liquid pipe are arranged at positions overlapping in the vertical direction, the space of the space according to the first invention can be reduced, and the indoor unit can be further miniaturized.

The air conditioner according to the sixth aspect of the invention is characterized in that, in the fifth aspect of the invention, the connecting portions of the pipes are arranged at different positions in a plan view.
When performing the disconnection work of the connection part of the gas pipe and the liquid pipe, first, the connection of the pipe arranged below the gas pipe and the liquid pipe is released, and then the continuous approval of the pipe arranged above is released. Do the work.
According to the present invention, since the connecting portions of the pipes are arranged at different positions in the plan view, the pipes arranged below do not interfere with the work of releasing the continuous approval of the pipes arranged above. However, the disconnection work can be easily performed.

The air conditioner according to the seventh aspect of the invention is characterized in that, in any one of the second to sixth aspects, the opening is formed at a position facing the connecting portion.
According to the present invention, it is possible to secure a service space for the work required for the pipe connection work and the connection disconnection work, so that the pipe connection work and the connection disconnection work can be easily performed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the present embodiment.

FIG. 1 is an example of a layout diagram of a room in which the indoor unit 10 according to the embodiment of the present invention is arranged.
This building is a business hotel, and a single room 1 is provided adjacent to the corridor 2 as one of the rooms. The single room 1 includes an entrance passage 3 connected to a door, a living room 5 communicating without a door at the back of the entrance passage 3, and a bathroom 6 provided on the side of the entrance passage 3. A bed and a desk are arranged in the living room 5. A bath and a toilet are arranged in the bathroom 6.
A closet 7 is provided on the side of the entrance passage 3 and on the opposite side of the bathroom 6. The closet 7 extends from the floor to the ceiling and is integrally provided in the single room 1. An indoor unit 10 is arranged between the bathroom 6 and the closet 7 on the ceiling portion 8 of the entrance passage 3 so that the front side faces the living room 5.

The indoor unit 10 is formed in a substantially rectangular shape in a plan view. The indoor unit 10 can also be arranged in the narrow entrance passage 3 sandwiched between the bathroom 6 and the closet 7.
The indoor unit 10 is a so-called one-way cassette indoor unit that sucks air from the harmonious chamber, air-conditions the air in the indoor unit 10, and then blows it out in one direction toward the harmonious chamber. The outlet 22 of the indoor unit 10 shown in FIG. 2 is directed toward the living room 5. The indoor unit 10 is arranged so that the air after air conditioning can be blown out toward the living room 5.
In the indoor unit 10, the direction in which the air after air conditioning is blown out is the forward direction.

The liquid pipe 60 connected to the outdoor unit 9 is connected to the main liquid pipe 51. The gas pipe 50 connected to the outdoor unit 9 is connected to the main gas pipe 61. The main liquid pipe 51 and the main gas pipe 61 are connected to the outdoor unit 9. The indoor unit 10 and the outdoor unit 9 form an air conditioner.
In FIG. 1, the liquid pipe 60 and the gas pipe 50 are described at positions where they do not overlap in a plan view, but this is a description for convenience, and the liquid pipe 60 and the gas pipe 50 according to the present embodiment are described. Are arranged at overlapping positions in a plan view, for example, as shown in FIGS. 2 and 4.

FIG. 2 is a perspective view of the indoor unit 10. FIG. 3 is a right side view of the indoor unit 10. FIG. 4 is a rear view of the indoor unit 10. 5 to 8 are perspective views of the space S1.
Based on the case where the indoor unit 10 in FIG. 2 is viewed from the front from the direction of arrow A, the right side in the figure is defined as the right, the left side is defined as the left, the front side is defined as the front, the rear side is the rear, the upper side is the upper side, and the lower side is the lower side. do. Further, the front-rear direction of the indoor unit 10 is the depth direction, the left-right direction of the indoor unit 10 is the width direction, and the vertical direction is the vertical direction.

The configuration of the indoor unit 10 will be described.
As shown in FIG. 2, the indoor unit 10 includes a main body portion 11 and a decorative panel 12.
The main body portion 11 has a first housing portion 20 arranged in the front and a second housing portion 30 provided adjacent to the first housing portion 20 and arranged behind the first housing portion 20. , Equipped with.
The decorative panel 12 includes a suction port (not shown) for sucking in the air in the conditioned room, and an outlet 22 for blowing out the air after air conditioning. The decorative panel 12 is installed on the ceiling surface.

A heat exchanger 21 is arranged in the first housing portion 20. The heat exchanger 21 according to the present embodiment is combined so that the cross section is substantially abbreviated.
A sirocco fan (fan) 31 is arranged in the center of the second housing portion 30. A vertically long electrical box 32 is arranged at the rear of the sirocco fan 31.
The sirocco fan (fan) 31 is arranged above the suction port provided in the decorative panel 12. The heat exchanger 21 is arranged on the air outlet 22 side provided in the decorative panel 12.
The refrigerant pipes and other pipes connected to the heat exchanger 21 are arranged in the first housing portion 20.

As shown in FIG. 2, the width W2 of the second housing portion 30 is formed to be narrower than the width W1 of the first housing portion 20.
The left side surface 30a of the second housing portion 30 is arranged at a position flush with the left side surface 20a of the first housing portion 20. Therefore, as shown by the dotted line in FIG. 2, it is in the width direction, between the right side surface 20b of the first housing portion 20 and the right side surface 30b of the second housing portion 30, and in the depth direction. A space S1 is provided between the rear surface of the first housing portion 20 and the rear surface of the second housing portion 30.

As shown in FIGS. 2 and 5, a gas pipe (pipe) 50 and a liquid pipe (pipe) 60 connecting the heat exchanger 21 and the outdoor unit 9, which are components of the indoor unit 10, are arranged in the space S1. ing. Piping rubber 33 is provided on the entire circumference of the gas pipe 50 and the liquid pipe 60 in the circumferential direction.
Further, in the space S1, a drain pipe 70 for draining drain water from a drain pan (not shown) provided in the first housing portion 20 is arranged.
The gas pipe 50, the liquid pipe 60, and the drain pipe 70 are arranged along the depth direction of the space S1. The gas pipe 50, the liquid pipe 60, and the drain pipe 70 are rear drawers.

As shown in FIGS. 4 and 5, the liquid pipe 60 is arranged above the gas pipe 50.
The gas pipe 50 and the liquid pipe 60 are arranged at overlapping positions in a plan view. That is, the gas pipe 50 and the liquid pipe 60 are arranged at positions where they overlap in the vertical direction. Further, the drain pipe 70 is also arranged at a position where it overlaps with the gas pipe 50 and the liquid pipe 60 in a plan view. That is, the gas pipe 50, the liquid pipe 60, and the drain pipe 70 are arranged side by side at positions overlapping in the vertical direction.

As shown in FIG. 5, the liquid pipe 60 arranged in the space S1 is provided with a liquid pipe connecting portion (connecting portion) 62 for connecting the liquid pipe 60. The liquid pipe connecting portion 62 includes bolts and nuts.
The gas pipe 50 arranged in the space S1 is provided with a gas pipe connecting portion (connecting portion) 52 for connecting the gas pipe 50. The gas pipe connecting portion 52 includes bolts and nuts.
The gas pipe connecting portion 52 and the liquid pipe connecting portion 62 are arranged at different positions in a plan view. The gas pipe connecting portion 52 is arranged behind the liquid pipe connecting portion 62.
The drain pipe 70 arranged in the space S1 is provided with a drain pipe connecting portion 72 for connecting the drain pipe 70.

In the present embodiment, the liquid pipe 60 is arranged above the gas pipe 50, but the gas pipe 50 may be arranged above the liquid pipe 60. When the gas pipe 50 is arranged above the liquid pipe 60, it is desirable that the gas pipe connecting portion 52 is provided behind the liquid pipe connecting portion 62.

As shown in FIG. 6, an opening 82 is formed on the right side surface 30b (the side surface of the second housing portion on the side adjacent to the space) of the second housing portion 30. A removable service plate 80 is attached to the opening 82. The opening 82 may be formed over the entire right side surface 30b (second housing portion, side surface adjacent to the space) of the second housing portion 30. The opening 82 may be a part of the right side surface 30b (the side surface of the second housing portion on the side adjacent to the space) of the second housing portion 30.
The service plate 80 is screwed and fixed to the right side surface 30b of the second housing portion 30 via the fixing portion 80a extending from the lower portion and the fixing portion 80b extending from the upper portion.
As shown in FIG. 5, when the service plate 80 is fixed to the right side surface 30b of the second housing portion 30, the service plate 80 becomes a part of the right side surface 30b of the second housing portion 30.

As shown in FIGS. 6 and 7, when the service plate 80 is fixed to the right side surface 30b of the second housing portion 30, the internal space S2 of the second housing portion 30 inside the service plate 80 has a space S2. No members are placed.
When the service plate 80 is removed from the indoor unit 10, a service space S3 for work in which the space S1 and the internal space S2 are connected is secured.
The internal space S2 may be provided with a space in which a maintenance device 35 such as a spanner or a wrench used at the time of maintenance for connecting or disconnecting the connecting portion can rotate. The internal space S2 may be, for example, a space of at least about 1 cm from the service plate 80 toward the inside of the second housing portion 30.

As shown in FIG. 3, the opening 82 is formed at a position facing the gas pipe connecting portion (connecting portion) 52 and the liquid pipe connecting portion (connecting portion) 62.
The opening 82 is provided at a position overlapping the gas pipe connecting portion 52 in a side view. That is, when the service plate 80 is removed, the gas pipe connecting portion 52 and the opening 82 overlap each other in the side view.
Therefore, by using the service space S3 secured when the service plate 80 is removed, it is possible to easily perform the connection work and the connection release work of the gas pipe 50 in the gas pipe connecting portion 52.

In the present embodiment, as shown in FIG. 3, the opening 82 does not overlap with the liquid pipe connecting portion 62 in the side view. However, the height of the lower end of the pipe rubber 33 provided in the liquid pipe 60 and the height of the upper end of the opening 82 are arranged at substantially the same position. As described above, since the liquid pipe connecting portion 62 is arranged immediately above the upper end of the opening 82, maintenance via the service space S3 can be facilitated as shown in FIG. 8 to be described later.
Needless to say, the opening 82 may be provided at a position where it overlaps with the position of the liquid pipe connecting portion 62 in a side view.

Next, the operation of this embodiment will be described.
When disconnecting the gas pipe 50 and the liquid pipe 60 in order to maintain the main body portion 11 of the indoor unit 10, first, the decorative panel 12 is removed.
Next, the service plate 80 is removed from the right side surface 30b of the second housing portion 30. As a result, the service space S3 can be secured.
Therefore, as shown in FIG. 7, in the service space S3, a maintenance device 35 such as a spanner or a wrench is used to first disconnect the gas pipe connecting portion 52 arranged below.
Next, as shown in FIG. 8, the liquid pipe connecting portion 62 arranged above is disconnected.

When connecting the gas pipe 50 and the liquid pipe 60, first, the liquid pipe connecting portion 62 arranged above is connected. As a result, the liquid pipe 60 is connected.
Next, the gas pipe connecting portion 52 arranged below is connected. As a result, the gas pipe 50 is connected.

Since these operations can be performed in the service space S3, it is not necessary to provide an extra space for maintenance in the width direction. Therefore, the indoor unit 10 can be miniaturized while performing maintenance easily.
Further, by simply removing the decorative panel 12, maintenance of the main body portion 11 such as the electrical box 32 can be performed at the same time.

As described above, in the present embodiment, the outdoor unit 9, the main body portion 11 which is installed on the ceiling and has the heat exchanger 21, the sirocco fan (fan) 31, and the indoor unit 10 which includes the decorative panel 12. In the air conditioner including, the main body portion 11 is provided behind the first housing portion 20 in which the heat exchanger 21 is arranged and the first housing portion 20, and the width W1 of the first housing portion 20 is provided. A second housing unit 30 having a narrower width and having a sirocco fan 31 arranged therein is provided, and an indoor unit 10 and an outdoor unit 9 are provided in the space S1 adjacent to the side of the second housing unit 30. The connecting portions (gas pipe connecting portion 52 and liquid pipe connecting portion 62) of the pipes (gas pipe 50 and liquid pipe 60) connecting the two housing portions 30 are arranged, and the second housing portion 30 is on the side adjacent to the space S1. The right side surface 30b is provided with an opening 82 that connects the space S1 and the internal space S2 of the second housing portion 30.
According to this, the space S1 and the second casing are provided by providing the opening 82 on the right side surface 30b of the second housing portion 30 adjacent to the space S1 in which the gas pipe connecting portion 52 and the liquid pipe connecting portion 62 are arranged. The service space S3 is secured because it is connected to the internal space S2 of the body portion 30 and the gas pipe connecting portion 52 and the liquid pipe connecting portion 62 are connected and disconnected. The maintenance device 35 can be easily used through the service space S3.
Therefore, it is possible to easily perform the connection work and the disconnection work of the pipes (gas pipe 50 and liquid pipe 60) while downsizing the indoor unit 10, so that the maintenance work of the indoor unit 10 can be easily performed. A harmonizer can be provided.

Further, according to the present embodiment, the opening 82 is provided with a detachable service plate 80.
The connection work and the connection disconnection work of the connecting portion (gas pipe connecting portion 52 and liquid pipe connecting portion 62) are performed by removing the service plate 80 and securing the service space S3, but the connecting portion (gas pipe connecting portion 52 and the liquid pipe connecting portion 52 and) are performed. In the normal time when the liquid pipe connecting portion 62) is not connected or disconnected, the service plate 80 can cover the second housing portion 30, so that dust or the like invades the inside of the second housing portion 30. Can be suppressed.

Further, according to the present embodiment, the gas pipe 50 and the liquid pipe 60 are arranged at overlapping positions in a plan view.
According to this, the space of the space S1 can be made smaller, and the indoor unit 10 can be made smaller.

Further, according to the present embodiment, the position of the liquid pipe connecting portion 62 (the connecting portion of the pipe arranged above the gas pipe and the liquid pipe which are pipes) is located at the gas pipe connecting portion 52 (arranged below). It is located behind the position of the connecting part of the pipe to be connected).
When the gas pipe connecting portion 52 and the liquid pipe connecting portion 62 are disconnected, first, the connecting portion 52 of the gas pipe connecting portion 52 arranged below is released, and then the liquid pipe connecting portion 62 arranged above is performed. Perform the work of canceling the consecutive approval.
According to this, since the position of the liquid pipe connecting portion 62 arranged above is arranged behind the position of the gas pipe connecting portion 52 arranged below, the liquid pipe connecting portion 62 arranged above is arranged. The gas pipe 50 arranged below does not interfere with the continuous approval release work, and the connection release work can be easily performed.

Further, according to the present embodiment, the opening 82 overlaps with the position of the gas pipe connecting portion 52 (the connecting portion of the pipe arranged below among the gas pipe and the liquid pipe which are pipes) in the side view. It is prepared for the position.
According to this, since the service space S3 for the work required at the time of connecting the gas pipe 50 and the liquid pipe 60 and the work of disconnecting the liquid pipe 60 can be secured, the connecting work and the connecting work of the gas pipe 50 and the liquid pipe 60 can be secured. The release work can be done easily.

Further, in the side view, the opening 82 is a liquid pipe connecting portion 62 (a pipe) in addition to the gas pipe connecting portion 52 (the connecting portion of the pipe arranged below the gas pipe and the liquid pipe which are pipes). It may be provided at a position that overlaps with the position of the gas pipe and the liquid pipe (the connecting portion of the pipe arranged above).
According to this, since the service space S3 for the work required at the time of connecting the gas pipe 50 and the liquid pipe 60 and the work of disconnecting the liquid pipe 60 can be secured, the connecting work and the connecting work of the gas pipe 50 and the liquid pipe 60 can be secured. The release work can be done easily.

Further, according to the present embodiment, a drain pan (not shown) provided in the first housing portion 20 and a drain pipe 70 for draining drain water from the drain pan are provided, and the drain pipe 70 is arranged in the space S1. However, the drain pipe 70 and the pipe (gas pipe 50 and liquid pipe 60) are arranged at overlapping positions in a plan view.
According to this, since the drain pipe 70 can also be pulled back through the space S1, the indoor unit 10 can be further miniaturized.

The drain pipe connecting portion 72 may be provided at a position rearward of the position of the connecting portion of the pipe arranged above the pipe (gas pipe 50 and liquid pipe 60).
According to this, if the liquid pipe 60 and the gas pipe 50 are disconnected, the liquid pipe 60 and the gas pipe 50 do not interfere with the connection of the drain pipe 70, and the drain pipe 70 is connected. The release work can be done easily.

Further, according to the present embodiment, the electrical box 32 in which the control device for controlling the sirocco fan 31 and the like is housed is vertically arranged in the rear portion of the inside of the second housing portion 30.
According to this, since the electrical box 32 is also exposed by removing the decorative panel 12 from the ceiling surface, maintenance of the electrical box 32 can be easily performed in addition to the work of connecting and disconnecting the gas pipe 50 and the liquid pipe 60. ..

Although the present invention has been described above based on one embodiment, the present invention is not limited to this embodiment. Since this is merely an example of an embodiment of the present invention, it can be arbitrarily modified and applied without departing from the spirit of the present invention.

In this embodiment, the description has been given for a so-called one-way cassette, but the present invention is not necessarily limited to this embodiment, and can be applied to another type of air conditioner such as a duct type.

3 Entrance passage 6 Bathroom 7 Closet 10 Indoor unit 20 1st housing part 30 2nd housing part 50 Gas pipe (piping)
52 Gas pipe connecting part (connecting part)
60 Liquid pipe (piping)
62 Liquid pipe connecting part (connecting part)
70 Drain piping 80 Service board 82 Opening S1 Space S2 Internal space S3 Service space

Claims (4)

The first housing where the heat exchanger is located and
A second housing portion which is provided adjacent to the first housing portion and is formed smaller than the first housing portion and in which a fan is arranged, and a second housing portion.
With a pipe connected to the heat exchanger,
The side surface of the second housing portion is recessed inward from the side surface of the first housing portion, and a space is formed in the recessed portion inward.
At least a part of the pipe extends in the space along the side surface of the second housing portion, and is connected to the pipe connected to the outdoor unit by the connecting portion in the space.
An opening into which a maintenance device can be inserted when connecting or disconnecting the connecting portion is formed on the side surface of the second housing portion at least at a position facing the connecting portion.
An indoor unit characterized by that. The pipe consists of a gas pipe and a liquid pipe.
The opening faces at least one of the connecting portion of the gas pipe and the connecting portion of the liquid pipe.
The indoor unit according to claim 1. A removable service plate is provided in the opening.
The indoor unit according to claim 1. The indoor unit according to at least one of claims 1 to 3.
An outdoor unit that connects to the indoor unit through piping is provided.
An air conditioner characterized by that.

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