JPH05215356A - Buried type air conditioner - Google Patents

Abstract

PURPOSE:To provide a buried type air conditioner capable of improving reliability on a quite important problem of formation of dew. CONSTITUTION:A back plate 9 is arranged at a rear position spaced apart from a casing 6 by a predetermined distance separate from the casing 6 of an indoor unit 1 constituting an air blowing circuit. A plurality of air drain holes 10 are arranged at the rear plate 9 in respect to a vertical direction, a portion of the rear plate 9 facing against the upper ends of the air drain holes 10 is bent inwardly of the indoor unit 1, water droplets flowed from the upper portion of the rear plate 9 are guided to an inside part of the indoor unit 1 by the bent part 9b so as to prevent the water droplets from flowing out of the air conditioner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embedded air conditioner in which an indoor unit is used by being embedded in an embedded material such as a wall.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 8, an indoor unit of an air conditioner of this type has an indoor unit 1 arranged in an installation frame 2 and has a front grille of Japanese or Western style. 3 are provided. In addition, 4 is a wireless remote controller.

The indoor unit 1 is constructed as shown in FIG. 9, and the air passing through the front grill 3 is cooled by the heat exchanger 5, carried along by the fan 7 along the inside of the casing 6, and blown out from the outlet 8. It is supposed to be blown out more. At this time, the outside of the casing 6 is also cooled by heat conduction, and as a result, the outer wall of the casing 6 is condensed. Unlike a wall-mounted air conditioner, an embedded air conditioner in which an indoor unit is embedded in a wall,
The fall of the condensed water from the indoor unit 1 to the outside is a fatal defect. Therefore, it is necessary to provide the back plate 9 on the outside of the casing 6 as shown in FIG.
In addition, the back plate 9 is often made of metal from the viewpoint of disaster prevention.

[0004]

However, in the air conditioner having the conventional structure as described above, the casing 6 constituting the wind circuit is cooled at the time of cooling, and the surface of the casing 6 on the side opposite to the wind circuit is cooled. Not only dew condensation occurs, but also the back plate 9 made of metal is naturally cooled by the cold radiation. Then, both surfaces of the back plate 9 are condensed and fall out as condensed water from the indoor unit 1 to the outside.

On the other hand, various attempts have heretofore been made in order to eliminate the dew condensation on the back plate 9, and a typical example thereof is shown in FIGS. 10 and 11. There are examples of countermeasures.

FIG. 10 is a sectional view of an indoor unit of a conventional embedded air conditioner. In this indoor unit, the air vent hole 10 is opened in the metal back plate 9, and the cool air between the casing 6 and the metal back plate 9 escapes to the outside through the air vent hole 10. The metal back plate 9 is configured so as not to be cooled so much, and the dew condensation on the back plate 9 is reduced.

However, even with such a structure, the back plate 9
Condensation on the surface never disappears, and the metal back plate 9
The water droplets that have reached the back plate grow and wind holes 10 in the back plate 9
May fall from the portion 9a facing the upper end of the. Further, the larger the air vent hole 10 is, the more effective against the dew condensation on the metal back plate 9, but in this case,
I am concerned about the following. That is, the condensed water generated on the surface of the casing 6 on the side opposite to the wind circuit grows, and the casing 6
Some of them flow down along the surface of the casing 6, and some of them jump out of the casing 6 when the falling speed increases. At this time, the back plate 9
If the air vent hole 10 is large, the casing 6 to the back plate 9
Sometimes it jumps over and jumps directly to the outside.

As a second countermeasure for preventing this, as shown in FIG. 11, a water absorbing material 11 that partially absorbs and retains water is attached to the casing 6 so that the water flows down along the casing 6. There is one in which water drops are once absorbed by the water absorbing material 11 to reduce the falling speed so that the water drops smoothly flow along the casing 6.

[0009] However, such a measure is not sufficient from the viewpoint of manufacturing, not only the workability is poor, but also the cost is high, which is still insufficient. The present invention solves the above-mentioned conventional problems, and an object thereof is to provide an embedded air conditioner capable of greatly improving the reliability against the problem of dew condensation, which is extremely important as an embedded air conditioner. To do.

[0010]

In order to solve the above problems, a first means of the present invention is to provide a rear position apart from a casing of an indoor unit forming a wind circuit by a predetermined distance from the casing. A back plate is provided on the back plate, a plurality of air vent holes are provided in the vertical direction in the back plate, and a portion of the back plate facing the upper end of the air vent hole is bent inward of the indoor unit.

The second means of the present invention is to provide a back plate at a rear position apart from the casing by a predetermined distance apart from the casing of the indoor unit constituting the wind circuit.
The back plate is provided with a long hole-shaped wind vent hole that extends obliquely with respect to the horizontal line.

A third means of the present invention is the same as the first means, wherein a water absorbing material is provided inside the bent portion facing the upper end of the air vent hole. Further, a fourth means of the present invention is to provide a back plate at a rear position apart from the casing by a predetermined distance apart from the casing of the indoor unit forming the wind circuit, and to provide a wind vent hole in the back plate. A plurality of them are provided in the vertical direction, and the opening areas of the plurality of air vent holes are formed so as to be larger toward the lower air vent holes.

The fifth means of the present invention is to provide a back plate at a rear position apart from the casing by a predetermined distance apart from the casing of the indoor unit forming the wind circuit,
A plurality of air vent holes are provided in the longitudinal direction in the back plate so that the density of the air vent holes per unit area in the back plate becomes larger toward the lower side of the back plate.

The sixth means of the present invention is to provide a back plate at a rear position apart from the casing by a predetermined distance apart from the casing of the indoor unit constituting the wind circuit,
It is arranged so that the distance between the casing and the back plate becomes larger as it goes downward.

The seventh means of the present invention is that the casing of the indoor unit constituting the wind circuit is formed so that the cross-sectional area thereof becomes larger toward the lower side.

[0016]

In the first means, since the back plate is provided with a plurality of air vent holes in the vertical direction, the cold air generated between the casing and the back plate can easily flow to the outside. Since the temperature is higher than in the past and dew condensation on the back plate is suppressed, the portion of the back plate facing the upper end of the air vent hole is bent inward toward the indoor unit. Water droplets that have fallen from the portion facing the upper end are collected by the bent portion and are prevented from falling outside.

Further, since the air vent hole is formed in the shape of an elongated hole extending obliquely with respect to the horizontal line by the second means, water droplets attached to the portion of the back plate facing the upper end of the air vent hole are elongated holes. It is guided to the position of the lower end of the air vent along the shape air vent, and flows along the inner surface of the back plate without falling to the outside.

Further, by the third means, the portion of the back plate facing the upper end of the air vent is bent toward the inside of the indoor unit, and water is absorbed inside the folding curved surface facing the upper end of the air vent. Since the material is provided, it is possible to more reliably prevent the water droplets collected by the bent portion from being absorbed by the water-absorbing material, and to prevent the water droplets from falling or jumping out.

In addition, since the opening areas of the plurality of air vent holes are made larger toward the lower air vent holes by the fourth means, the cold air generated between the casing and the back plate easily flows to the outside. , The temperature of the backboard is raised more than before, and the dew condensation on the backboard is suppressed.

Further, by the fifth means, the density of the air vent holes per unit area in the back plate is made larger toward the lower side of the back plate, so that the cool air generated between the casing and the back plate is increased. Is more likely to flow to the outside, and the temperature of the back plate is higher than in the past, and dew condensation on the back plate is suppressed.

Further, since the sixth means is arranged so that the distance between the casing and the back plate becomes larger as it goes downward, the temperature of the back plate, which is apt to become lower as it goes down in the prior art, can be made higher than before. It is possible to suppress the dew condensation on the back plate.

Further, since the casing of the indoor unit forming the wind circuit is formed by the seventh means so that the cross-sectional area thereof becomes larger as it goes downward, in the conventional case, the temperature tends to become lower as it goes down. The temperature of the plate can be raised more than before, and the dew condensation on the back plate can be suppressed.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be sequentially described below with reference to the drawings. In each of the embodiments, the same functions as those of the related art are designated by the same reference numerals and the description thereof will be omitted.

First, referring to FIG. 1, a first embodiment of the present invention will be described. As shown in FIG. 1, a plurality of wind vent holes 10 are provided in the back plate 9 in the vertical direction. The portion of the back plate 9 that faces the upper end of each air vent hole 10 is bent toward the inside of the indoor unit 1 to form a bent portion 9b.
Are formed.

With the above-described structure, the condensed water that has condensed on both sides of the back plate 9 is smoothly picked up by the bent portion 9b of the back plate 9 therebelow, so that the condensed water does not significantly escape to the outside.

Next, a second embodiment of the present invention will be described with reference to FIG. As shown in the enlarged view of FIG.
In, the wind vent hole 12 is formed in the shape of a long hole extending obliquely with respect to the horizontal line.

Therefore, the wind vent hole 12 in the back plate 9
Of water that is about to fall from the portion facing the upper end of the wind vent hole 12 is guided to the lower end position of the wind vent hole 12 along the edge portion 9c located at the upper end of the wind vent hole 12, and further the portion of the back plate 9 therebelow. Finally, the water drops are absorbed by the inner side of the indoor unit 1 while being guided to, and the number of these water droplets jumping out to the outside is significantly reduced.

Next, a third embodiment of the present invention will be described with reference to FIG. As shown in FIG. 3, similarly to the first embodiment, the portion of the back plate 9 facing the upper end of each air vent hole 10 is bent inward of the indoor unit 1 to form a bent portion 9b. ing. Then, the water absorbing material 13 is attached to the inside of each bent portion 9b.

With the above structure, since the water droplets collected by the bent portion 9b are absorbed by the water absorbing material 13, as the amount of water droplets inside the back plate 9 increases, the water absorbing material 13 absorbs the water droplets more and It is possible to more surely prevent the product from falling or popping out.

Next, a fourth embodiment of the present invention will be described with reference to FIG. As shown in FIG. 4, the back plate 9 is provided with a plurality of air vent holes 10 in the vertical direction, and the plurality of air vent holes 10 are formed such that the opening area thereof becomes larger toward the lower side.

As a result, the cold air generated between the casing 6 and the back plate 9 is more likely to flow to the outside toward the lower side, and the temperature of the back plate 9, which tends to be lower toward the lower side, is raised more than before, and the back plate is lowered. Condensation of 9 can be suppressed.

Next, a fifth embodiment of the present invention will be described with reference to FIG. As shown in FIG. 5, the back plate 9 is provided with a plurality of air vent holes 10 in the vertical direction, and the density of the air vent holes 10 per unit area of the back plate 9 is larger toward the lower side of the back plate 10. Is configured to be.

As a result, the cold air generated between the casing 6 and the back plate 9 is more likely to flow to the outside toward the lower side, and the temperature of the back plate 9, which tends to be lower toward the lower side, is increased more than before, and the back plate is lowered. Condensation of 9 can be suppressed.

Next, a sixth embodiment of the present invention will be described with reference to FIG. As shown in FIG. 6, the back plate 9 is arranged so that the distance between the casing 6 and the back plate 9 forming the wind circuit becomes larger as it goes downward. That is, in FIG. 6, the distance L2 between the casing 6 and the back plate 9 on the lower side is set to be larger than the distance L1 between the casing 6 and the back plate 9 on the upper side. The wind vent hole 10 is not provided.

With the above structure, the temperature of the back plate 9, which is apt to become lower as it goes, can be increased more than before, and the dew condensation on the back plate can be suppressed. Next, a seventh embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 7, the casing 14 of the indoor unit 1 forming the wind circuit is formed so that its cross-sectional area becomes larger as it goes downward. The wind vent hole 10 is not provided.

With the above structure, since the heat insulating effect of the casing 14 is enhanced as it goes downward, the temperature of the back plate, which tends to be lower in the prior art, can be made higher than before, and dew condensation on the back plate can be suppressed. ..

[0038]

As is apparent from the above embodiment, according to the present invention, a plurality of air vent holes are arranged in the longitudinal direction of the back plate, and the upper end surfaces of the air vent holes are folded inward of the indoor unit. By bending, the cold air generated between the casing and the back plate can easily flow to the outside to raise the temperature of the back plate and suppress the dew condensation on the back plate. Water droplets can be forcibly collected by the bent part of the back plate, which prevents the drop of water drops from the back plate, which is fatal as an embedded air conditioner, and even the thickness of the indoor unit. It is possible to make it thinner.

Further, by tilting the air vent hole with respect to the horizontal, water drops adhering to the portion of the back plate facing the upper end of the air vent hole are moved along the oblong air vent hole at the lower end of the air vent hole. Since it can be guided to the part position and flow along the inner surface of the back plate without falling to the outside, it is possible to prevent water drops from the back plate, which is fatal as an embedded air conditioner, Furthermore, it becomes possible to reduce the thickness of the indoor unit.

Further, the portion of the back plate facing the upper end of the air vent hole is bent toward the inside of the indoor unit, and a water absorbing material is provided on the inside of the folding curved surface facing the upper end of the air vent hole. Even if the amount of water drops inside the board increases, the water drops that try to fall from the upper end position of the wind vent can be held to some extent inside the back plate, and the water drops from the back plate are deadly as an embedded air conditioner. Therefore, it becomes possible to reduce the thickness of the indoor unit.

Further, by forming the opening areas of the plurality of air vent holes to be larger toward the lower air vent holes, the cold air generated between the casing and the back plate can easily flow to the outside and the temperature of the back plate can be increased. It is possible to suppress the dew condensation on the back plate, which is higher than in the past, and it is also possible to reduce the thickness of the indoor unit.

Further, by making the density of the air vent holes per unit area in the back plate larger toward the lower side of the back plate, the cold air generated between the casing and the back plate can easily flow to the outside. The temperature of the back plate can be increased to suppress dew condensation on the back plate, and the thickness of the indoor unit can be reduced.

Further, by arranging the casing and the back plate so that the distance between the casing and the back plate becomes larger toward the lower side, the temperature of the back plate, which is apt to become lower in the conventional case, can be made higher than in the conventional case. Condensation can be suppressed, and the thickness of the indoor unit can be reduced.

Further, by forming the casing of the indoor unit forming the wind circuit so that the cross-sectional area thereof becomes larger toward the lower side, the temperature of the back plate, which is apt to become lower in the lower temperature in the conventional case, becomes lower than in the conventional case. Therefore, it is possible to increase the thickness of the indoor unit, reduce dew condensation on the back plate, and reduce the thickness of the indoor unit.

[Brief description of drawings]

FIG. 1 is a sectional view of an embedded air conditioner showing a first embodiment of the present invention.

FIG. 2 is an enlarged view of a back plate of an embedded air conditioner according to a second embodiment of the present invention.

FIG. 3 is a sectional view of an embedded air conditioner showing a third embodiment of the present invention.

FIG. 4 is a sectional view of an embedded air conditioner showing a fourth embodiment of the present invention.

FIG. 5 is a sectional view of an embedded air conditioner showing a fifth embodiment of the present invention.

FIG. 6 is a cross-sectional view of an embedded air conditioner showing a sixth embodiment of the present invention.

FIG. 7 is a sectional view of an embedded air conditioner showing a seventh embodiment of the present invention.

FIG. 8 is a perspective view showing a structure of an indoor unit of an air conditioner according to a conventional example and the present invention.

FIG. 9 is a cross-sectional view of a conventional embedded air conditioner.

FIG. 10 is a cross-sectional view of a conventional embedded air conditioner.

FIG. 11 is a cross-sectional view of a conventional embedded air conditioner.

[Explanation of symbols]

 1 Indoor unit 6,14 Casing 9 Back plate 9b Bending part 10, 12 Wind vent hole 13 Water absorbing material

Claims (7)

[Claims] 1. In an air conditioner for embedding an indoor unit in an embedding material such as a wall, a back plate is provided at a rear position apart from a casing of the indoor unit forming a wind circuit by a predetermined distance. An embedded air conditioner in which a plurality of air vent holes are provided in the longitudinal direction in the back plate, and a portion of the back plate facing the upper end of the air vent is bent inward of an indoor unit. 2. In an air conditioner for embedding an indoor unit in an embedding material such as a wall, a back plate is provided at a rear position apart from the casing of the indoor unit constituting the wind circuit by a predetermined distance. An embedded air conditioner in which the back plate is provided with a wind hole having a long hole shape that extends obliquely with respect to a horizontal line. 3. The embedded air conditioner according to claim 1, wherein a water absorbing material is provided inside the bent portion facing the upper end of the air vent hole. 4. In an air conditioner for embedding an indoor unit in an embedding material such as a wall, a back plate is provided at a rear position apart from the casing by a predetermined distance, apart from the casing of the indoor unit forming the wind circuit. An embedded air conditioner in which a plurality of air vent holes are provided in the longitudinal direction in the back plate, and the opening areas of the plurality of air vent holes are formed to be larger toward the lower air vent holes. 5. In an air conditioner for embedding an indoor unit in an embedding material such as a wall, a back plate is provided at a rear position apart from the casing of the indoor unit forming the wind circuit by a predetermined distance. An embedded air conditioner configured such that a plurality of air vent holes are provided in the longitudinal direction in the back plate so that the density of the air vent holes per unit area in the back plate becomes larger toward the lower side of the back plate. 6. An air conditioner for embedding an indoor unit in an embedding material such as a wall, wherein a back plate is provided at a rear position apart from the casing of the indoor unit forming the wind circuit by a predetermined distance. An embedded air conditioner arranged such that the distance between the casing and the back plate becomes larger as it goes downward. 7. An air conditioner for embedding an indoor unit in an embedding material such as a wall, wherein the casing of the indoor unit forming the wind circuit is formed so that its cross-sectional area becomes larger toward the bottom. ..