JPH0634153A - Indoor unit for air conditioner - Google Patents

Abstract

PURPOSE:To provide an indoor unit in which a body is largely lowered in height while obtaining large heat exchanging area and suction area. CONSTITUTION:The air conditioner comprises a body 1 having a diffuser 3 at an upper front surface, suction ports 6a, 6b at a lower front surface, and a fan casing 10a for communicating the diffuser 3 with the ports 6a, 6b, a cross flow fan 11 opposed to the diffuser 3, and an indoor side heat exchanger 12 so provided in an air duct at a lower side of the fan 11 as to be bent substantially in a V shape and to hold the fan 11 from below. Thus, a large heat exchanging area is obtained by the exchanger 12, a height of the body 1 is largely lowered in combination of the fan 11 and the exchanger 12 to perform a space conservation, and further a large suction area is obtained by the ports 6a, 6b at the lower front surfaces of the body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner indoor unit for heating and cooling a living space.

[0002]

2. Description of the Related Art Most of separate type indoor units represented by wall-mounted air conditioners employ a structure using a cross flow fan as an indoor fan.

Conventionally, such an indoor unit is shown in FIG.
As shown in Fig. 4, a suction port b is provided on the front surface of the main body a configured in the shape of an elongated flat box, and a blow-out port c opening diagonally forward is provided on the lower front surface side of the main body a. A configuration is used in which the outlet c is communicated via an air passage d, and an indoor heat exchanger e and a cross flow fan f (indoor fan) are sequentially arranged in the air passage d from the suction port side.

The air conditioner is operated by the refrigeration cycle and the cross-flow fan f to operate the air in the living space,
That is, the air in the room is taken into the air passage d from the suction port b,
The heat is exchanged with the indoor heat exchanger e to form hot air or cold air, and then the air is blown out from the air outlet c into the room.

In FIG. 13, h is an air purifier, i is a connecting pipe for connecting an indoor unit and an outdoor unit (not shown), j is a drain pan provided under the indoor heat exchanger e, and k is It is a drain pipe for leading out drain water collected in the drain pan j to the outside of the room.

[0006]

In many of such indoor units, as an installation place, a narrow wall portion extending in the left-right direction between the window and the ceiling, which becomes a dead space, is selected, and the main body a is set in the same portion. The indoor units are attached with the backs of the two facing each other.

By the way, in recent homes, in order to improve the daylighting property, a large window is often adopted. Therefore, the size between the window and the ceiling is small, and the wall portion between them is narrow. It has become to.

However, the structure of the indoor unit as described above, that is, the structure in which the indoor heat exchanger e is vertically arranged along the vertical direction and the crossflow fan f is combined with the indoor heat exchanger e, has a required cooling capacity and heating capacity. There is a limit in reducing the height dimension of the indoor unit because of the reason that a predetermined heat exchange area is secured to maintain the above.

Therefore, in the recent indoor unit, FIG.
As shown in FIG. 5, the indoor heat exchanger c bent in a dogleg shape is used to make the height of the indoor unit as small (low) as possible.

Even so, however, the tendency toward the narrow wall portion between the window and the ceiling, which has been seen in recent houses, cannot be met by the heightening of the indoor unit, and in many cases it cannot be mounted on the wall portion. The situation is happening.

Moreover, if the height of the indoor unit is lowered by giving priority to the installation point, the indoor heat exchanger e and the suction area must be reduced, so that the required cooling capacity,
There is a problem that the heating function cannot be maintained and the original function is impaired, and it is difficult to achieve compatibility with the installability.

Further, at the installation location, furniture such as a closet tends to be placed directly below the indoor unit. However, when such furniture is placed, since the air outlet c of the indoor unit is located in the lower front, There is also a problem that the air blown from the outlet blows against the furniture and does not reach the direction where people are. In particular, this problem remarkably appears when the hot air is blown (because it is blown downward), and during the heating operation, the problem is that it does not warm up efficiently.

The present invention has been made in view of such circumstances, and an object thereof is to obtain a large heat exchange area and a large suction area, while significantly reducing the height of the main body, and An object of the present invention is to provide an indoor unit for an air conditioner, which is capable of excellent blowing even when furniture or the like is placed directly below the main body.

[0014]

In order to achieve the above object, an indoor unit according to a first aspect of the present invention has an air outlet at an upper front portion thereof, a suction port at a lower front portion and a lower inlet portion thereof, and has an internal air outlet. A main body having an air passage communicating between the air outlet and the suction inlet is provided, a cross-flow fan is provided in the air passage so as to face the air outlet, and the cross-flow fan is provided in a lower air passage portion of the cross-flow fan. This is to provide an indoor heat exchanger that is bent in a substantially V shape so as to sandwich the fan from below. The indoor unit according to claim 2 is provided with a hood for restricting mutual relation between a blowout flow of the blowout port and a suction flow of the suction port at least at an opening portion of the suction port on a side close to the blowout port. Especially.

According to the third aspect of the present invention, the indoor unit has a fan casing that surrounds the cross flow fan and has a fan casing that guides the intake air passing through the indoor heat exchanger to the air outlet. is there. In the indoor unit according to a fourth aspect of the present invention, the water channel portion for guiding the dew condensation water condensed by the fan casing to the drain tray is provided on the outer surface of the fan casing.

[0016]

According to the indoor unit of the first aspect of the present invention, it is substantially V
A large heat exchange area can be obtained by adopting an indoor heat exchanger bent in a letter shape, and the indoor heat exchanger is installed so that the crossflow fan is sandwiched from below. The height of the main unit of the indoor unit is significantly reduced by combining it with the container in a space-saving manner. At the same time, by providing the front lower part and the lower part of the main body with a suction port, a large suction area corresponding to the indoor heat exchanger is secured. This makes it possible to significantly reduce the height of the main body of the indoor unit while obtaining a large heat exchange area and suction area.

Moreover, even if furniture or the like is placed directly below the indoor unit, the blow-out air can be blown out into the room well without being disturbed by the furniture or the like, even if the furniture or the like is placed directly below the indoor unit. It will be possible. Further, most of the air passage, that is, the lower portion of the indoor heat exchanger, is in contact with the air before heat exchange.

According to the indoor unit of claim 2,
Since the blow-out port and the suction port are adjacent to each other, a part of the blown air blown out from the blow-out port is again sucked in from the suction port, a so-called short circuit tends to occur, Due to the mutual regulation of the blowout flow and the suction flow by the hood, such a phenomenon does not occur, and the lower blowout characteristic during the heating operation is significantly improved, and the good operation can be continued. According to the indoor unit of the third aspect, the suction air that has passed through the indoor heat exchanger passes through the fan casing and is blown out from the outlet.

According to the indoor unit of claim 4,
During the cooling operation, the dew condensation water generated in the fan casing is finally guided to the drain tray by the water channel, so that the heat insulating material for preventing the dew condensation is hardly used.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in FIGS.

FIG. 1 shows the appearance of an indoor unit of a wall-mounted air conditioner to which the present invention is applied, FIG. 3 shows a side cross section taken along the line AA in FIG. 1, and FIG. 5 shows in FIG. Each of the cross-sections along the line BB is shown, and reference numeral 1 in the drawing denotes the main body of the indoor unit.

The main body 1 is in the form of an elongated box having a substantially low overall height, the front side of which is an arc extending vertically and the back side of which is a vertical surface. The back surface of the main body 1 is an installation surface. The installation surface is fixed to the wall surface 2 existing between the ceiling and the window of the room D, and the indoor unit is installed on the wall with the arc side facing forward.

On the upper part of the front wall 1a of the main body 1, there is provided an elongated air outlet 3 extending in the left-right direction. The air outlet 3 is provided with upper and lower two wind direction panels 4 extending in the longitudinal direction of the air outlet 3 and also serving as a lid. These wind direction panels 4 and 4 have a shape corresponding to the opening shape of the air outlet 3, and their surfaces are decorated. Both ends of the wind direction panels 4 and 4 are rotatably supported by the opening edge of the outlet 3 via a hinge 5, and the blowing direction is changed depending on the opening degree of the wind direction panels 4 and 4. It is possible to change from downward to forward. In addition, by closing these wind direction panels 4 and 4, the air outlet 3
It is designed so that it can be closed.

At the lower part of the front wall 1a of the main body 1, there is an outlet 3
A suction port 6a having a large opening extending from the lower edge to the lower part of the front wall 1a is provided. The lower wall 1b of the main body 1 is also provided with a suction port 6b.

A panel 8 (corresponding to a hood) for preventing a short circuit is provided at the suction port 6a near the blowout port 3. This panel 8 has a shape corresponding to the opening shape of the suction port 6a, and its surface is decorated. The upper side of the panel 8 is rotatably supported via an hinge 9 at an upper edge portion which constitutes an opening edge portion of the suction port 6a. The panel 7 is restricted so as to rotate only within a predetermined rotation range indicated by θ, and when the indoor unit is operated, it is rotated to the open side as shown by the solid line for use. When the indoor unit is not operating,
The portion shown by the chain double-dashed line in FIG. 3 and the suction port 6a as shown in FIG. The panel 8 prevents the blowout flow of the blowout port 3 from interfering with the suction flow of the suction port 6a (because the blowout port 3 and the suction port 6 are very close to each other) so that the blowout flow and the suction flow of the blowout port 3 are The mutual relation with the suction flow of the mouth 6a is regulated.

Inside the main body 1, a blow-out port 2 and a suction port 6 are provided.
An air passage 10 that communicates with a and 6b is provided. The air passage 10 is a fan casing 1 of a cross flow fan 11 described later.
It is configured by utilizing 0a. Specifically, the fan casing 10a includes end wall portions 10b and 10b facing the wall portion in the left-right direction of the main body 1 as shown in FIGS. 6 and 7.
have. Each of the end wall portions 10b, 10b has a triangular lower portion and an upper portion having a large circular arc portion 10d and a small circular arc portion 10e arranged side by side with an arcuate concave portion therebetween. Then, these end wall portions 10b,
A corrugated upper wall 10f following the shape of the same wall portion is provided between the upper portions of 10b. Also, the end wall portions 10b, 10b
A back wall 10g formed of a wall extending from the upper wall 10f is provided between the substantially vertical backs. Further, the elongated flange portion 1 is provided in the mouth body portion 16 formed by the front end portions of the end wall portions 10b and 10b and the front end portion of the upper wall f.
0h is provided. The mouth body portion 16 faces the outlet 3.

That is, the fan casing 10a has a substantially box-like shape having a mouth portion 16 communicating with the air outlet 3 in the front part and an opening communicating with the suction ports 6a, 6b in the lower part. In addition, as shown in FIG. 10, the fan casing 1
The back wall 10g of 0a and the back wall of the main body 1 are close to each other. S indicates a gap between the two. Also the flange 1
On the lower side of 0h, the fan casing 10a
Is provided with a nose 10i extending toward the inside.

By using the installation of the fan casing 10a, as shown in FIGS. 1 and 10, between the right end wall portion 10b of the casing 10a and the right side wall of the main body 1 facing the end wall portion 10b. A device accommodating portion 11c is formed therein.

The end wall portion 10b of the fan casing 10a,
Between 10b, the cross-flow fan 11 is rotatably supported at a position facing the opening of the mouth portion 16 and covered with the arc portion 10d. The right end of the cross flow fan 11 is connected to the output shaft of the fan motor 11d housed in the device housing portion 11c, and according to the operation of the fan motor 11d, the indoor air is taken in through the suction ports 6a and 6b.
It blows out from the blow-off port 2.

Here, the fan motor 11d is mounted close to the end wall portion 10b of the fan casing 10a, and the heat generated by the fan motor 11d is applied to the end wall portion 10b.
b (for warming the end wall portion 10b of the fan casing 10a). The same applies when the fan motor 11d is attached in contact with the end wall portion 10b of the fan casing 10a.

Air heated by the heat from the fan motor 10d and the heat generated from the electric control component 11e housed in the equipment housing 11c together with the heat flows from the space S. There is.

Between the front and rear hypotenuses sandwiching the triangular tops of the end walls 10b, 10b, there is provided an indoor heat exchanger 12 bent into a substantially V shape as shown in FIGS. Has been. Thereby, the substantially V-shaped indoor heat exchanger 1
2 is arranged in the air passage 10 so as to sandwich the cross flow fan 11 from below and to face the nose 10i closely.

With such a structure, the indoor heat exchanger 12 having a large heat exchange area, together with the cross-flow fan 11,
The most space-saving is accommodated in the main body 1.
At the same time, on the lower side of the indoor heat exchanger 12, that is, on the suction side (upstream side), dew condensation is prevented during cooling operation (because the air before heat exchange passes through the same portion). . Then, with this indoor heat exchanger 12, the air passage 1
The indoor air passing through 0 is heat-exchanged into cold air or warm air so that it can be blown out into the room from the air outlet 3.

Incidentally, 13 is a drain pan (drain pan) provided below the bent portion 12a of the indoor heat exchanger 12, 14 is connected to this drain pan 13, and drain water (condensate) collected in the drain pan 13 is collected. Drain pipe for drawing out of the room (only shown in FIGS. 3 and 4), 1
Reference numeral 5 denotes a connection pipe extending from the indoor heat exchanger 12 and connected to an outdoor unit (not shown). Further, the fan casing 10a has a structure that the fan casing 10a is
A water channel structure is provided for guiding the condensed water condensed on a to the drain pan 13.

Explaining this structure, the fins of the indoor heat exchanger 12 and the end wall portions 10b, 10b of the fan casing 10a are connected so as to be in close contact with each other. As a result, the condensed water that has condensed on each of the end wall portions 10b and 10b is transmitted to the surface of the end wall portion 10b and to the fins of the indoor heat exchanger 12, and then is dropped to the drain pan 13 as drain water. I am doing it. Further, at the center of the upper part of the fan casing 10a, there is provided a collecting part 17 that utilizes the corrugated concave part of the upper wall 10f.

As a result, the condensed water condensed on the arc-shaped upper surface portion on the rear side of the arc portion 10d and on the arc-shaped upper surface portion on the front side of the arc portion 10e is collected in the collecting portion 17. The collected dew condensation water is collected, and the end wall portions 10b, 1 on both sides are collected.
0b, and similarly to the above, through the surface of the end wall portion 10b and the fins of the indoor heat exchanger 12, through the drain pan 13
It is made to fall.

As shown in FIG. 5 and FIG. 8, the shape of the flange portion 10h extends from the arc-shaped upper surface of the front side of the arc portion 10d, for example, at the lowermost portion of both sides in the width direction of the flange portion 10h. Condensed water flowing down following
Gutter part 1 for flowing down to the fins of the indoor heat exchanger 12
8 are provided. Specifically, the gutter portion 18 has a bottom portion 18a that extends obliquely downward from the lower back surfaces of both side portions in the width direction of the flange portion 10h, and a vertical wall 18b provided on the outer edge of the bottom portion 18a. It is configured like a groove. Then, the side portion of the bottom portion 18a adjacent to the fin is in close contact with the plate surface of the fin, and the bottom portion 18a and the vertical wall 1 are
By 8b, the dew condensation water flowing down along the flange portion 10h is received and collected, and this is made to flow down to the plate surface of the fin.

That is, the dew condensation water flowing down to the front side of the fan casing 10a also travels through the fins of the indoor heat exchanger 12 and then reaches the drain pan 13 as described above.
To fall.

On the outer surface of the back wall 10g, a plurality of ribs 19 each having a strip-shaped convex portion 19a arranged in a substantially inverted c-shape are provided along the left-right direction as shown in FIGS. There is. By these ribs 19, the condensed water flowing down along the back wall 10g from the upper surface of the arc shape on the rear side of the arc portion 10e can be collected at a predetermined position.

At the lower end of the back wall 10g, which faces the fin end of the indoor heat exchanger 12, as shown in FIGS. 3, 4, 5 and 6, the groove-shaped trough portion 20 is entirely provided. Is provided so that the condensed water that falls can be collected by each rib 19.

Further, at the corner where the back wall 10g and the bottom of the gutter 20 are connected, there is provided a long hole 21 extending to the ridgeline of the corner corresponding to the position where the condensed water drops on each rib 19. This long hole 21 faces the fin end of the indoor heat exchanger 12, and the condensed water collected in the trough portion 20 is the same as described above.
The fins of the indoor heat exchanger 12 are transmitted and dropped to the drain pan 13. That is, the dew condensation water flowing down to the rear side of the fan casing 10a is also finally dropped into the drain pan 13 as described above. Next, the operation of the indoor unit thus configured will be described.

For example, when heating the room, first, as shown in FIG.
And from the state in which the outlet 3 and the inlet 6a shown in FIG. 4 are closed, the wind direction panels 4 and 4 are opened so that the outlet direction is the downward direction as shown in FIGS. Open 8 to maximum opening. Then, the operation unit of the indoor unit (not shown) is set to, for example, "heating", and the operation of the air conditioner is started.

As a result, the four-way valve constituting the heat pump type refrigeration cycle is switched to the heating side, the compressor (not shown) is also activated, and the heating cycle (the indoor heat exchanger is used as a condenser and the outdoor heat The operation cycle using the evaporator as the exchanger will be constructed. At the same time, the cross flow fan 11 is driven by the fan motor 11d.

In accordance with the operation of the cross flow fan 11, first, the air in the room is taken into the fan casing 10a through the suction ports 6a and 6b. When the indoor air passes through the indoor heat exchanger 12, the indoor air exchanges heat with the indoor heat exchanger 12, which is a condenser.

The room air that has become warm air due to this heat exchange passes through the inside of the fan casing 10a and is blown out from the air outlet 3. Then, this warm air flows downward along the wind direction panel 4. As a result, warm air is blown from the high position in the room toward the floor. Thus, a large heat exchange area and a large suction area can be obtained, and heating can be performed in the indoor unit having a significantly low height.

First, a large heat exchange area can be obtained by adopting the indoor heat exchanger 12 which is bent in a substantially V shape. Secondly, this indoor heat exchanger 12
To the cross flow fan 11 arranged in the upper part of the main body 1,
Due to the structure provided so as to be sandwiched from below, the cross flow fan 11
And the indoor heat exchanger 12 are combined in a space-saving manner,
The height of the main body of the indoor unit is minimized. As a result, it is possible to provide the indoor unit with installability that sufficiently corresponds to the narrowness of the wall portion between the window and the ceiling found in recent homes, and to install the indoor unit on the narrow wall portion. Is possible. In addition, thirdly, by providing the suction ports 6a and 6b in the lower front portion and the lower portion of the main body 1, a large suction area corresponding to the indoor heat exchanger 12 is secured. From these first to third points, it is understood that the main body 1 of the indoor unit can be significantly lowered while obtaining a large heat exchange area and a large suction area.

Moreover, even if furniture or the like is placed directly below the indoor unit installed on the wall surface 2, the blow-out air is provided by the blow-out port 3 provided at the front upper portion of the main body 1 without disturbing the furniture or the like. The air can be satisfactorily blown out in the direction of people in the room, and comfortable heating (air conditioning) can be guaranteed.

Moreover, as described above, the cross flow fan 11,
The indoor unit in which the indoor heat exchanger 12 is combined has a larger part of the air passage 10 than the indoor unit that employs the conventional indoor heat exchanger 12 placed in the vertical direction.
It is possible to have a structure in which it comes into contact with the indoor air before it exchanges heat with 2.

On the other hand, when cooling the room, the blowing direction is changed during the heating. That is, the wind direction panels 4 and 4 are rotated so that the blowing direction is horizontal. The panel 8 is opened to the maximum. Then, the operation unit of the indoor unit (not shown) is set to "cooling", and the operation of the air conditioner is started.

Then, the four-way valve constituting the heat pump type refrigeration cycle is switched to the cooling side, the compressor (not shown) is operated, and the cooling cycle (the outdoor heat exchanger is used as the condenser, and the indoor heat exchanger is used). (Operating cycle with an evaporator)
To make up. At the same time, the cross flow fan 11 is driven by the fan motor 11d.

Thus, as in the case of heating, the air in the room is taken into the fan casing 10a through the suction ports 6a and 6b. When this indoor air passes through the indoor heat exchanger 12, the indoor heat exchanger 1 serving as an evaporator
Heat exchange with 2. The room air that has been cooled by the heat exchange passes through the fan casing 10a and is blown out from the air outlet 3. During such cooling operation, the fan casing 10a is cooled by contact with cold indoor air. At this time, dew condensation occurs on the outer surface of the fan casing 10a due to the temperature difference.

Here, conventionally, a large amount of heat insulating material is used to prevent this condensation, or condensed water (drain water) condensed to save the heat insulating material is guided to a drain pan, and the condensation below the drain pan is insulated. Is being prevented by
According to the indoor unit described above, the heat insulating material for preventing dew condensation can be almost eliminated.

That is, as described above, the cross flow fan 1
1. When the indoor unit is a combination of the indoor heat exchanger 12, the indoor heat exchanger 12 has a structure in which only the fan casing 10a above the indoor heat exchanger 12 is in contact with the cold indoor air. Condensation does not occur on the lower side of the indoor unit with the boundary as (because it is the part where the indoor air before heat exchange comes into contact). In addition to this, the fan casing 10a
Condensation water (drain water) that has condensed on the
All are collected in the drain pan 13.

That is, the dew condensation water condensed on the end wall portions 10b, 10b of the fan casing 10a is the same as the end wall portion 10b.
It is guided to the upper ends of the fins of the indoor heat exchanger 12 through b and 10b. Then, the dew condensation water travels through the fins and drops into the drain pan 13 at the lower part, and the drain pipe 1
It is discharged from 4 to the outdoor.

A circular arc portion 10e, which is the upper surface of the fan casing 10a near the rear of the circular arc portion 10d at the center of the upper surface.
Condensed water that has condensed on the upper surface portion near the front part of (1) collects in the collecting portion 17 formed by the central recessed portion as shown in FIG. And this condensed water follows the hollow part,
It flows along the width direction of the fan casing 10a and is guided to the end wall portions 10b and 10b. As a result, the condensed water is
As in the case of the condensed water that has condensed on the end walls 10b and 10b, it travels through the indoor heat exchanger 12 and falls into the drain pan 13.

Condensation water condensed on the front surface of the arc portion 10d, which is on the front side of the upper surface of the fan casing 10a, is condensed into the mouth portion 16 as shown in FIGS.
Run down to. The condensed water reaches the upper side of the flange portion 10h as shown in FIG. 8 and follows the shape of the flange portion 10h, and thus the fan casing 10a.
Flows in the width direction of the, and travels along the side surface of the mouth part 16 and gathers in the gutter part 18. Then, it is guided to the upper ends of the fins by the gutter portion 18, and falls into the drain pan 13 via the indoor heat exchanger 12 as described above.

Further, the dew condensation water that has condensed on the rear surface of the arc portion 10e on the rear side of the upper surface of the fan casing 10a flows down to the back wall 10g as shown in FIGS. 3 and 9. The condensed water is collected by the ribs 19 in a predetermined manner and collected in the trough 20 below. And
This condensed water is guided to the upper ends of the fins from the respective long holes 21, similarly passes through the indoor heat exchanger 12, and then the drain pan 13
Fall inside. That is, by using the water channel structure together, the indoor unit does not need any heat insulating material for preventing dew condensation. Thereby, the cost can be reduced.

Moreover, during the cooling operation, the fan motor 11
Since the heat generated from d is transferred to the end wall portion 10d of the fan casing 10b and warms the end wall portion 10d, dew condensation on the fan casing 10b is suppressed.

In addition to this, during the cooling operation, as shown in FIG. 10, the fan motor 11d and the electric control component 1 are
The air warmed by the heat radiation of 1e circulates in the gap S between the fan casing 10a and the main body 1 and makes it difficult for dew condensation to occur on the surface of the fan casing 10a. The reliability of preventing condensation on the outer surface of 10a is high.

Further, the above-mentioned indoor unit has the outlet 3
Although the suction port 6a and the suction port 6a are very close to each other, the panel 8 is provided so that the heating operation and the cooling operation as described above can be favorably continued.

That is, the indoor unit has the outlet 3
Since the suction port 6a and the suction port 6a are very close to each other, part of the blown air blown from the blow-out port 3 is sucked again from the suction port 6a during the heating operation and the cooling operation. A phenomenon, a so-called short circuit, tends to occur, but due to the mutual regulation of the blowout flow and the suction flow made by the open panel 8, the blowout flow does not interfere with the suction flow. I don't have to get up. This greatly contributes to the improvement of the lower outlet characteristic especially during the heating operation.

Further, by adopting the openable panel 8 and the openable wind direction panel 4, when the indoor unit is not used, the panels 8 and 4 should cover the blowout port 3 and the suction port 6a seen from the front. In this case, the appearance of the indoor unit will be improved, and foreign matter will not enter through the air outlet 3 and the suction port 6a.

In one embodiment, the indoor heat exchanger 12 bent closest to the V-shape is used, but the present invention is not limited to this, and the rear heat exchanger 12 as in the other embodiments shown in FIGS. 11 and 12 is used. The same effect can be obtained by using the substantially V-shaped indoor heat exchanger 25 in which the end of the heat exchange portion 25a is bent.

In the above-described embodiment, an example in which the panel 8 and the wind direction panel 4 are opened and closed manually is described.
That is, the panel 8 and the wind direction panel 4 are driven by the motor.
May be operated.

[0065]

As described above, according to the inventions of claims 1 and 3, an indoor unit is provided in which the main body is significantly lowered while obtaining a large heat exchange area and suction area. can do. Moreover, even if furniture or the like is placed directly below the installed main body, good blowing can be achieved. In addition, most of the air passage, that is, the lower portion of the air passage on the inner side of the heat exchanger can be in contact with the air before heat exchange.

According to the invention described in claim 2, in addition to the effect of claim 1, it is easy to occur because they are close to each other.
The effect of preventing a part of the air blown from the outlet from being sucked in again from the inlet, greatly improving the lower outlet characteristics during heating operation, and continuing good operation Play.

According to the invention described in claim 4, in addition to the effect of claim 1, the dew condensation generated in the fan casing which comes into contact with the remaining cooling air can be collected in the drain tray.
Eliminates the need to use insulation to prevent condensation.
That is, it is possible to provide an indoor unit that does not require the use of a heat insulating material.

[Brief description of drawings]

FIG. 1 is a perspective view showing a wall-mounted indoor unit according to an embodiment of the present invention together with a panel open state.

FIG. 2 is a perspective view showing a state in which a panel of the indoor unit is closed.

FIG. 3 is a side sectional view of the indoor unit taken along the line AA in FIG.

FIG. 4 is a side sectional view showing a state in which a panel of the indoor unit is closed.

5 is a side sectional view of the indoor unit taken along the line BB in FIG.

FIG. 6 is an exploded perspective view showing a structure around a heat exchange system housed in the main body.

FIG. 7 is an exploded perspective view of the heat exchange system disassembled into an indoor heat exchanger and a fan casing.

FIG. 8 is a perspective view showing a drainage system of condensed water attached to a front portion of the upper surface of the fan casing.

FIG. 9 is a perspective view showing a drainage system of condensed water attached to a rear portion of the upper surface of the fan casing.

10 is a plan cross-sectional view of the indoor unit taken along the line C-C in FIG.

FIG. 11 is a perspective view showing a wall-mounted indoor unit according to another embodiment of the present invention together with a panel open state.

FIG. 12 is a perspective view showing a state in which the wind direction panel of the indoor unit is closed.

FIG. 13 is a side sectional view for explaining a conventional indoor unit.

FIG. 14 is a side sectional view for explaining a different conventional indoor unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Main body of indoor unit, 3 ... Air outlet, 4 ... Wind direction panel, 6a, 6b ... Air outlet, 8 ... Panel (hood), 10
... air passage, 10a ... fan casing, 11 ... cross-flow fan, 12 ... indoor heat exchanger, 12a ... bent part, 13 ... drain pan, 17 ... collecting part, 18, 20 ... trough part, 19 ... rib, 21 ... Long hole.

Claims (4)

[Claims] 1. A main body having an air outlet at an upper front portion, having suction ports at a lower front portion and a lower portion, and having an air passage communicating the air outlet and the air inlet therein, and the air outlet. And a cross-flow fan, which is provided in the air passage opposite to the air-flow passage, for circulating air in the air passage, and is arranged in a lower air passage portion of the cross-flow fan so as to sandwich the cross-flow fan from below. An indoor unit of an air conditioner, comprising: an installed indoor heat exchanger bent into a substantially V shape. 2. A hood for restricting a mutual relation between a blowout flow of the blowout port and a suction flow of the suction port is provided in at least an opening portion of the suction port on a side close to the blowout port. The indoor unit for an air conditioner according to claim 1, wherein the indoor unit is an air conditioner. 3. The air passage includes a fan casing that is provided so as to surround a cross flow fan and that guides intake air passing through the indoor heat exchanger to an outlet. The indoor unit of the air conditioner according to claim 1. 4. A water channel portion is provided on an outer surface of the fan casing for guiding condensed water condensed by the fan casing to a drain tray.
Indoor unit of the air conditioner described in.