JP2003269740A - Indoor unit for air conditioning and ceiling embedded air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit for air conditioning and a ceiling embedded air conditioner which surely leads dew condensation water (drain) to a desired position for collection in occurrence of dew condensation. <P>SOLUTION: In this indoor unit 10 for air conditioning, a main body casing 18 is embedded inside a ceiling face, and a drain collection means 20 leading the dew condensation drain in the desired direction is arranged on the upper face of the main body casing 18. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning indoor unit in which a main casing is embedded in a ceiling surface, and a ceiling embedded air conditioner equipped with this air conditioning indoor unit.

[0002]

2. Description of the Related Art As shown in FIG. 4, a ceiling-embedded air conditioner 100 is mainly composed of an air conditioning indoor unit 110, an air conditioning outdoor unit 120, and a refrigerant pipe 130. . Outdoor unit 120 for air conditioning
Has a compressor (not shown) for compressing the refrigerant, and an outdoor heat exchanger (not shown) for exchanging heat between the refrigerant and the outdoor air. The refrigerant pipe 130 connects the air conditioning indoor unit 110 and the air conditioning outdoor unit 120, and also transfers the refrigerant to the air conditioning indoor unit 110 and the air conditioning outdoor unit 120.
It is meant to be cycled between.

FIG. 5 is a sectional view taken along line VV of FIG. 4, showing a state in which the panel 111 of FIG. 4 is removed. In FIG. 4, reference numerals 112 and 113 are an air inlet and an air outlet, respectively. As shown in FIG. 5, the air conditioning indoor unit 110 is mainly configured by a suction port 114, an indoor heat exchanger 115, a blowout port 116, a fan 117, a main body casing 118, and a drain pan 119.

The suction port 114 is an opening for taking in indoor air, and is provided on the upstream side of the fan 117. The indoor heat exchanger 115 is for cooling or heating the air taken in through the suction port 114, and is arranged between the suction port 114 and the fan 117. The air outlet 116 is an opening for returning the air that has undergone heat exchange in the indoor heat exchanger 115 to the inside of the room, and is provided on the downstream side of the fan 117. The fan 117 has a suction port 114
This is for taking in air from the inside and blowing out the heat-exchanged air from the air outlet 116 into the room.
A suction port 114 and a blow-out port 116 are formed on the lower surface of the main body casing 118, and the indoor heat exchanger 115 and the fan 117 are accommodated therein, and the appearance thereof has a substantially rectangular parallelepiped shape. Also, the drain pan 119
Is disposed below the indoor heat exchanger 115 and the fan 117, and is for collecting the drain dropped from above. The fan 117 is a so-called cross-flow fan that rotates around a rotating shaft 117a extending in the horizontal direction (vertical direction on the paper surface),
The body casing 118 is made of a thin metal plate member.

Also, the upper outer surface 1 of the main body casing 118
An upper heat insulating material 140 and a side heat insulating material 150 are attached to 18a and the side outer surface 118b, respectively. That is, the outside of the main body casing 118 is covered with the upper heat insulating material 140 and the side heat insulating material 150 without any gap.

On the other hand, the upper inner surface 1 of the main body casing 118
An inner wall forming member 160 is attached from 18c to the inner surface 118d on the outlet side. The inner wall forming member 160 is made of, for example, polystyrene foam. In addition, the inner surface 160 of the inner wall forming member 160
c, that is, the surface facing the inlet 114 and the outlet 116, the air sucked from the inlet 114 is the outlet 1
16 is formed to have a curved surface that smoothly flows.

[0007]

In the conventional air conditioning indoor unit 110 as described above, the main body casing 11 is used.
The upper outer surface 118a and the side outer surface 118b of No. 8 are covered with the upper heat insulating material 140 and the side heat insulating material 150 without any gaps, and measures are taken to prevent condensation on the main body casing 118 as much as possible. However, since no measures have been taken to prevent condensation,
When dew condensation occurs, there is a problem that drain (condensation water) may flow out to an unexpected place.

Further, the upper outer surface 1 of the body casing 118
18a and the outer side surface 118b must be covered with the upper heat insulating material 140 and the side heat insulating material 150 without any gap,
There was a problem that the cost would go up.

Further, since the main body casing 118 is made of a metal thin plate member which is difficult to be processed into a complicated shape, the inner wall forming member 160 and other members for rectifying the air flow are inevitably provided inside the main body casing 118. Had to be pasted, which increased the cost.

The present invention has been made in view of the above circumstances, and in the case of dew condensation, the air conditioner indoor unit and the ceiling-embedded type can surely guide and collect the drain to a desired location. The purpose is to provide an air conditioner.

Another object of the present invention is to provide an indoor unit for air conditioning and a ceiling-embedded air conditioner which can reduce the cost by minimizing the heat insulating material covering the main body casing. is there.

Another object of the present invention is to provide an indoor unit for air conditioning and a ceiling-embedded air conditioner which can reduce the cost by eliminating the conventionally required internal forming members. .

[0013]

In order to solve the above-mentioned problems, the air-conditioning indoor unit and the ceiling-embedded air conditioner of the present invention employ the following means. That is, claim 1
According to the air conditioning indoor unit described above, a suction port for taking in indoor air, an indoor heat exchanger for cooling or heating the air taken in from the suction port, and heat exchange with the indoor heat exchanger. A blower for returning the generated air to the room, a fan for taking in the air from the suction port, and blowing out the heat-exchanged air from the blowout port, and the suction port and the blowout port are lower surfaces. A main body casing that is formed into a housing for accommodating the indoor heat exchanger and the fan, and has an appearance of a substantially rectangular parallelepiped shape, and a drain pan disposed below the indoor heat exchanger and the fan. In the air conditioning indoor unit having the main body casing embedded in the ceiling surface, a condensed drain is provided on the upper surface of the main body casing in a desired direction. Wherein the drain recovery means capable of directing is provided.

In this air conditioning indoor unit, the drain condensed on the outer surface of the upper portion of the main body casing is collected by the drain collecting means.

According to a second aspect of the present invention, there is provided the air conditioning indoor unit according to the first aspect, wherein the drain recovery means is at least one recess.

In this air conditioning indoor unit, the drainage condensed on the outer surface of the upper portion of the main body casing is guided to at least one concave portion and accumulated there.

According to a third aspect of the present invention, there is provided the air conditioning indoor unit according to the second aspect, wherein the at least one recess is formed in a flow of air flowing from the suction port toward the air outlet. It is characterized in that it is provided from one side of the upper surface of the main body casing to the other side opposite thereto in a direction substantially orthogonal to the above.

In this air conditioning indoor unit, at least the drain condensed on the outer surface of the upper part of the main body casing flows in a direction substantially parallel to the flow of air flowing from the suction port toward the air outlet. One recess is formed. That is, when the fan of the air conditioning indoor unit rotates about a horizontal axis as shown in the drawing, the inner surface of the conventionally formed inner wall forming member is formed by the at least one recess. .

According to a fourth aspect of the present invention, there is provided the air conditioning indoor unit according to the third aspect, wherein at least one bottom portion of the at least one recess penetrates the main casing in a thickness direction. One through hole is provided.

In this air conditioning indoor unit, the drain accumulated in at least one recess is guided from the outer surface of the upper portion of the main body casing to the inner surface of the upper portion thereof through at least one through hole.

According to the air conditioning indoor unit of the fifth aspect, in the air conditioning indoor unit of the fourth aspect, the through hole is provided near one side and / or another side of the main casing. It is characterized by

In this air conditioning indoor unit, the drain accumulated on the outer surface of the upper portion of the main body casing passes through at least one through hole provided in the vicinity of one side and / or the other side of the main body casing and the upper portion of the main body casing. It will be guided from the outer surface to the upper inner surface. That is, the at least one through hole is provided on one side and / or the other side of the fan, which is less affected by the wind of the fan.

According to a sixth aspect of the present invention, there is provided the air conditioning indoor unit according to the fifth aspect, wherein the drain pan is arranged substantially directly below the through hole.

In this air conditioning indoor unit, the drain pan located directly below the through hole collects the drain that has dropped through the through hole.

According to the air conditioning indoor unit of the seventh aspect, in the air conditioning indoor unit of any one of the first to sixth aspects, the main body casing is made of synthetic resin.

In this air conditioning indoor unit, the main casing is made of synthetic resin. That is, the main body casing having a complicated shape is manufactured by integral molding.

According to the ceiling embedded air conditioner according to claim 8, the air conditioning indoor unit according to any one of claims 1 to 7, a compressor for compressing a refrigerant, and a refrigerant. The air conditioning outdoor unit having an outdoor heat exchanger for exchanging heat with the outdoor air, the air conditioning indoor unit and the air conditioning outdoor unit are connected, and a refrigerant is supplied to the air conditioning indoor unit and the air conditioning unit. And a refrigerant pipe for circulating between the outdoor units.

In this ceiling-embedded air conditioner, the drain condensed on the outer surface of the upper portion of the main body casing is collected by the drain collecting means.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The outline of the ceiling-embedded air conditioner 100 is the same as the conventional one described with reference to FIG. 4, and therefore the description thereof will be omitted. Therefore, only the features of the present invention will be described here. Further, the same members as those of the related art are designated by the same reference numerals.

FIG. 1 is a view similar to FIG. 5, showing a side cross section of an air conditioning indoor unit 10 according to the present invention. As shown in FIG. 1, the air conditioning indoor unit 10 includes a suction port 14, an indoor heat exchanger 15, an outlet 16, and a fan 1.
7, the main body casing 18, and the drain pan 19 are main components.

The suction port 14 is an opening for taking in indoor air, and is provided on the upstream side of the fan 17. The indoor heat exchanger 15 is for cooling or heating the air taken in through the suction port 14.
4 and the fan 17. The air outlet 16 is an opening for returning the air that has undergone heat exchange in the indoor heat exchanger 15 to the inside of the room, and is provided on the downstream side of the fan 17. The fan 17 is for taking in air from the suction port 14 and blowing out heat-exchanged air from the air outlet 16 into the room. A suction port 14 and a blowout port 16 are formed on the lower surface of the main body casing 18, and the indoor heat exchanger 15 and the fan 17 are housed therein, and the appearance thereof has a substantially rectangular parallelepiped shape. Further, the drain pan 19 includes the indoor heat exchanger 15 and the fan 1.
7 is disposed below 7, and is for collecting the drain dropped from above. In addition, fan 1
Reference numeral 7 is a so-called cross-flow fan that rotates around a rotating shaft 17a extending in the horizontal direction (vertical direction on the paper surface).

The outer side surface 18 of the body casing 18
A side heat insulating material 50 is attached to b. As shown in FIG. 1, the side heat insulating material 50 is provided so as to cover a part of the outer peripheral side of the upper outer surface 18 a of the main body casing 18. That is, the side heat insulating material 50 is provided so as to cover up to the boundary where the upper outer surface 18a of the main body casing 18 is inclined downward.

As described above, the body casing 18 is made of a heat insulating material.
By stopping covering all the upper outer surfaces 18a of the above, the total amount of the heat insulating material can be reduced, and the cost can be reduced.

On the other hand, the main body casing 18 has a curved surface 18c from the upper portion to the side portion on the outlet side so that the air sucked from the suction inlet 14 can smoothly flow to the outlet 16. The shape of the curved surface 18c matches the shape of the inner surface of the inner wall forming member 160 (see FIG. 5) described above.

It is advantageous if such a body casing 18 is made of synthetic resin, for example. That is,
Main body casing 1 having a complicated shape as shown in FIG.
8 can be integrally formed by, for example, injection molding.

As described above, by forming the curved surface 18c on the main body casing 18 itself, the inner wall forming member 160, which has been separately prepared, can be omitted, and the cost can be reduced.

The curved surface 18c has a shape as shown in FIG. 1, that is, a shape having two peaks 18d and one valley 18e. In other words, the upper outer surface 18a of the main body casing 18 is provided with one recess (drain collecting means) 20. Further, the recess 20 is formed in a direction substantially orthogonal to the flow of air flowing from the suction port 14 toward the air outlet 16 in the main body casing 18
Is provided from one side of the upper surface of the other side to the opposite side.

As a result, the drain (condensation water) adhering to the upper outer surface 18a of the main body casing 18 to which the side heat insulating material 50 is not attached is directed toward the bottom of the recess 20 along the slope formed by the recess 20. You will be guided. That is, the drain (condensation water) attached to the upper outer surface 18 a of the main body casing 18 is collected by the recess 20.

FIG. 2 is a sectional view taken along the line II-II of FIG. As shown in FIG. 2, the recess 20 has through holes 20a, 20 penetrating the body casing 18 in the plate thickness direction in the vicinity of one side and the other side of the body casing 18, respectively.
b is provided.

As a result, the drain accumulated in the recess 20 moves from the upper outer surface 18a of the main body casing 18 to the curved surface 18a.
It is led to the side of c.

Further, as shown in FIG. 2, these through holes 2
A drain pan 19 is arranged just below 0a and 20b.

As a result, these through holes 20a, 20b are formed.
The drain (shown by a dashed arrow in the figure) that passes through and is dropped is collected by the drain pan 19. The drain collected in the drain pan 19 is discharged to the outside of the room via the drain pump 60 and the drain pipe 61 connected to the drain pump 60. In FIG. 2, reference numeral 17a is a fan motor for rotating the fan 17.

The body casing 18 according to the present invention is not limited to the one made of synthetic resin.
For example, a metal thin plate member may be used as a rib and styrofoam or the like may be sprayed around it.

Further, the main body casing 18 may have a form as shown in FIG. That is, the two recesses 30 and 40 extend in the direction orthogonal to the extending direction of the recess 20 shown in FIGS. 1 and 2, and are provided at both end portions of the main body casing 28, respectively. The main body casing 2 is provided approximately in the center of the recesses 30 and 40.
8 may be provided with through holes 30a and 40a penetrating in the plate thickness direction. These through holes 30a, 40a
Is provided at substantially the same position as the through holes 20a and 20b described above. In this case, it is necessary to provide the inner wall forming member 160 (see FIG. 5) as described above from the inner surface of the upper portion of the main body casing 28 to the inner surface of the side portion on the outlet side. It has the advantage that it can be eliminated. In other words, the four side outer surfaces 28b of the body casing 28
It is only necessary to attach the heat insulating material to.

Further, the present invention has the fan (cross flow fan) rotating about the horizontal axis, which has been described so far, and blows the air sucked from one suction port into one (or two) blowers. It is not applicable only to an air conditioning indoor unit that blows out from an outlet, and has, for example, a fan (sirocco fan) that rotates around a vertical axis, and indoor heat exchange that is arranged around this fan so as to surround this fan. It can also be applied to an air conditioning indoor unit that has an air conditioner and blows air sucked from one suction port provided in the central portion from four air outlets arranged around this suction port. It is a thing.

[0046]

The air conditioning indoor unit and the ceiling-embedded air conditioner of the present invention have the following effects. According to the air conditioning indoor unit of claim 1, the drain (condensation water) that has condensed on the outer surface of the upper portion of the main body casing is collected by the drain collection means. There is an effect that it is possible to prevent it from flowing out to an unpredictable place, and it is possible to prevent the generation of mold and the like in the ceiling.

According to the air conditioner indoor unit of the second aspect, the drainage condensed on the upper outer surface of the main body casing is
Since it will be guided to at least one recess and will be stored there, the drain can be reliably collected and it is possible to prevent the drain from flowing to an unexpected place when dew condensation occurs. At the same time, there is an effect that it is possible to prevent the occurrence of mold and the like on the ceiling.

According to the air conditioning indoor unit of the third aspect, when the fan of the air conditioning indoor unit rotates about a horizontal axis as shown in the drawing, it is conventionally provided by the at least one recess. Since the inner surface of the conventionally formed inner wall forming member is formed, the conventionally required inner wall forming member can be omitted, and the cost can be reduced.

According to the air conditioning indoor unit of the fourth aspect, the drain accumulated in the at least one recess is guided from the upper outer surface to the upper inner surface of the main body casing through the at least one through hole. Therefore, the drain can be appropriately treated, and it is possible to prevent the occurrence of mold or the like on the outer surface of the upper portion of the main body casing.

According to the air conditioner indoor unit of the fifth aspect, at least one through hole is provided on one side and / or the other side of the fan, which is less affected by the wind of the fan. Therefore, there is an effect that the drain can be dripped almost directly below without being scattered.

According to the air conditioner indoor unit of the sixth aspect, the drain pan located directly below the through hole collects the drain that has dropped through the through hole. It is possible to reliably process the.

According to the air conditioner indoor unit of the seventh aspect, since the main body casing is made of synthetic resin, it can be integrally formed even in a complicated shape and has been conventionally required. There is an effect that the inner wall forming member can be omitted and the cost can be reduced.

In the ceiling-embedded air conditioner according to the eighth aspect, the drain (condensation water) condensed on the outer surface of the upper portion of the main body casing is collected by the drain collecting means, so that the condensation occurs. In this case, it is possible to prevent the drain from flowing out to an unexpected place, and it is possible to prevent the occurrence of mold or the like on the ceiling.

[Brief description of drawings]

FIG. 1 is a schematic side sectional view showing an embodiment of an air conditioning indoor unit according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a view showing another embodiment of the air conditioning indoor unit according to the present invention, and is an overall perspective view of a main body casing.

FIG. 4 is a schematic configuration diagram showing an overall configuration of a ceiling-embedded air conditioner.

5 is a sectional view taken along line VV of FIG. 4, which is a schematic side sectional view of a conventional air conditioning indoor unit.

[Explanation of symbols]

10 Air conditioning indoor unit 14 Suction port 15 Indoor heat exchanger 16 Outlet 17 fans 18 body casing 19 Drain pan 20 recess (drain collection means) 20a through hole 20b through hole 28 Body casing 30 recess (drain collection means) 30a through hole 40 recess (drain collection means) 40a through hole 100 Ceiling embedded air conditioner 110 Air-conditioning indoor unit 114 Suction port 115 Indoor heat exchanger 116 Outlet 117 fans 118 body casing 119 Drain pan 120 Outdoor unit for air conditioning 130 Refrigerant piping

Claims (8)

[Claims] 1. A suction port for taking in indoor air, an indoor heat exchanger for cooling or heating the air taken in from the suction port, and an air heat-exchanged by the indoor heat exchanger And a fan for taking in air from the suction port and blowing out heat-exchanged air from the blowout port to the room, the suction port and the blowout port are formed on the lower surface. Together with the indoor heat exchanger and the fan,
An air-conditioning indoor unit including a main body casing whose appearance is a substantially rectangular parallelepiped shape, and a drain pan arranged below the indoor heat exchanger and the fan, and in which the main body casing is embedded in a ceiling surface. In the above air conditioner, the air conditioner indoor unit is characterized in that a drain recovery means capable of guiding the condensed drain in a desired direction is provided on the upper surface of the main body casing. 2. The air conditioning indoor unit according to claim 1, wherein the drain recovery means is at least one recess. 3. The air conditioning indoor unit according to claim 2, wherein the at least one recess is in a direction substantially orthogonal to a flow of air flowing from the suction port toward the air outlet. The air-conditioning indoor unit, which is provided from one side of the upper surface of the above to the other side opposite thereto. 4. The air conditioning indoor unit according to claim 3, wherein at least one through hole penetrating the main body casing in a thickness direction is provided in a bottom portion of the at least one recess. Indoor unit for air conditioning. 5. The indoor unit for air conditioning according to claim 4, wherein the through hole is near one side of the main body casing, and /
Alternatively, the air conditioning indoor unit is provided near the other side. 6. The air conditioning indoor unit according to claim 5, wherein the drain pan is arranged substantially directly below the through hole. 7. The air conditioning indoor unit according to claim 1, wherein the body casing is made of synthetic resin. 8. The indoor unit for air conditioning according to claim 1, a compressor for compressing a refrigerant, and an outdoor heat for exchanging heat between the refrigerant and the outdoor air. An air conditioning outdoor unit having a exchanger, a refrigerant pipe for connecting the air conditioning indoor unit and the air conditioning outdoor unit, and circulating a refrigerant between the air conditioning indoor unit and the air conditioning outdoor unit, An embedded ceiling type air conditioner characterized by being provided.