JPH1019289A - Wall hang type air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the receiving work of refrigerant pipelines and drain pipelines into a pipeline receiving space as well as the connecting work of pipelines to each other when the pipelines are led out to the outside of a casing by forming a wide pipeline receiving space, not partitioned by an arced part. SOLUTION: A cross flow fan 7 and an air stream guiding unit 8, having an arced part 8c inflated arcedly along the cross flow fan with a radius of curvature bigger than that of the outer periphery of the cross flow fan so as to guide air stream, sucked from a suction port 8a, straightly toward an air outlet port 5, are equipped in a casing 2. The arced part 8c is positioned at the side of a front surface 2b from the center (o) of rotation of the cross flow fan. A pipeline receiving space 14, receiving refrigerant pipeline 12 and drain pipeline 13, is provided at a position near the rear surface of lower surface side in the casing, positioned below a heat exchanger and opposed to the rear part of the air outlet port. The pipeline receiving space is covered by a cover 15, detachable with respect to the casing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall-mounted air conditioner having a cross-flow fan as a blowing means, and more particularly to measures for accommodating piping such as refrigerant piping led out of a casing of the device.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Publication No. 7-5201
As disclosed in Japanese Unexamined Patent Application Publication No. 6-106, there is known an indoor unit of a wall-mounted air conditioner that blows air with a crossflow fan. As shown in FIG. 10, this type of indoor unit has an air inlet (b) at a portion extending from the center to the upper end of the front surface of a casing (a), and an air outlet (c) at a lower end portion of the front surface of the casing (a). ) Are provided. In the casing (a), the heat exchanger faces the air inlet (b).
In (d), cross-flow fans (e) are arranged on the back side (downstream of air flow) of the heat exchanger (d). Further, an air flow guide (f) is provided between the cross flow fan (e) and the air outlet (c). This air flow guide
(f) is an annular arc-shaped portion (h) bulging in an arc along the crossflow fan (e) with a larger radius of curvature than the outer periphery of the crossflow fan (e), and the arc-shaped portion (h). A suction port (g) formed at the upstream end and communicating with the air outlet (c) .The air flow sucked from the suction port (g) by the operation of the cross flow fan (e) is supplied to the air outlet (c). ) To guide you straight. The air outlet (c) is provided with a blade (i) for adjusting the direction of the blown air. In this case, the air flow guide (f) is
The cross-flow fan (e) is arranged from the upper side to the lower side so as to increase the wind speed distribution on the arc-shaped part (h). (a) It rotates around the back side.

[0003] The indoor air introduced into the casing (a) from the air suction port (b) with the driving of the cross flow fan (e) flows between the refrigerant flowing through the refrigerant pipe of the heat exchanger (d). After performing heat exchange to adjust the temperature to make the air conditioned, the air is drawn into the air flow guide (f) from the cross flow fan (e) and blows out from the air outlet (c) into the room. ing.

[0004] Further, a pipe housing space is provided at a position on the lower surface side in the casing (a) corresponding to the lower part of the heat exchanger (d) and the rear part (rear side) of the air flow guide part (f).
(m), a refrigerant pipe (j) for circulating refrigerant, and a drain pipe for discharging condensation water generated in the heat exchanger (d). (k) are accommodated so as not to interfere with the arc-shaped portion (h).

[0005]

However, the above-mentioned conventional pipe housing space (m) is a narrow space partitioned by an arc-shaped portion (h) in the casing (a) near the rear surface on the lower surface side. Piping (j) and drain piping (k)
Was very difficult to accommodate.

Moreover, such a narrow piping accommodation space
If another pipe or the like is connected to each pipe (j, k) in (m) and led out of the casing (a), the connection work becomes very difficult and troublesome.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to form a wide piping accommodating space which is not affected by the arc-shaped portion of the air flow guide portion, so that refrigerant flowing into the piping accommodating space is formed. An object of the present invention is to make it possible to easily accommodate a pipe and a drain pipe, and to easily perform a connection operation with another pipe when leading these pipes out of a casing.

[0008]

In order to achieve the above-mentioned object, a solution taken by the invention according to claim 1 includes a rear surface (2a).
A casing (2) mounted on the wall (Z); an air inlet (3, 4, 11, 42) provided in the casing (2) for sucking room air into the casing (2);
(2), and an air outlet (5) for blowing temperature-controlled air into the room, and an air outlet (3, 4, 11, 42) and an air outlet (5) Air passage (A), heat exchangers (6, 31) arranged to correspond to the air inlets (3, 4, 11, 42), and an outer periphery of the cross flow fan (7). An annular arc-shaped portion (8c) swelling in an arc along the cross flow fan (7) with a larger radius of curvature, and the arc-shaped portion (8
At the upstream end of c), a suction port (8a) communicating with the air outlet (5) is formed, and the air flow sucked from the suction port (8a) by the operation of the cross flow fan (7) is transferred to the air outlet (8). 5) and an air flow guide (8) for guiding the air straight into the casing (2) from the air inlets (3, 4, 11, 42). After the temperature is adjusted in 31), it is assumed that the air conditioner is a wall-mounted type air conditioner that draws the air into the air flow guide portion (8) from the cross flow fan (7) and blows out from the air outlet (5). Further, the air flow guide (8) is located at the front of the casing (2) more than the center of rotation (o) of the cross flow fan (7).
The arc-shaped portion (8c) is arranged on the (2b) side, and the suction port (8a) is opened toward the rear surface (2a) of the casing (2), while the air outlet (5) is closed. Open the lower surface (2d) of the casing (2) toward the front. And the above heat exchanger
The piping housing space (14) is located on the left and right sides of the casing (2) near the lower back side inside the casing (2), which is located below the (6, 31) and behind the air outlet (5). (2e, 2
f) A refrigerant pipe (12) for circulation of refrigerant and a drain pipe for discharging dew condensation water generated in the heat exchangers (6, 31) are provided in the pipe accommodation space (14). (13).

Thus, according to the first aspect of the present invention, the pipe accommodating space (14) has an arcuate portion closer to the front surface (2b) of the casing (2) than the rotation center (o) of the cross flow fan (7). The air flow guide (8), in which the (8c) is located, secures a wide space that is not partitioned by the arc-shaped portion (8c) at a position near the rear lower surface side behind the air outlet (5) in the casing (2). The refrigerant pipe (12) and the drain pipe (13) are easily accommodated.

In addition, each pipe in the pipe accommodation space (14)
When connecting other pipes to (12, 13) and leading them out of the casing (2), the pipes are easily routed in the large pipe accommodation space, making it easier to connect the pipes. I can do it.

[0011] The solution means taken by the invention of claim 2 is:
In addition to the constituent features of the invention according to claim 1, a casing
The pipe housing space (14) is covered from the outside by a cover (15) that can be attached to and detached from (2).

Thus, according to the second aspect of the present invention, each of the pipes (12, 13) is shielded by the cover (15), so that the appearance can be kept good. Moreover, the connection work to each pipe (12, 13) is performed with the cover (15) removed from the casing (2), so that the connection work can be further simplified.

[0013] Further, in addition to the constituent features of the invention described in claim 2, the solution taken by the invention described in claim 3 is a cover corresponding to one of the left and right side surfaces (2e, 2f) of the casing (2). (15) Refrigerant piping (12) and drain piping (1
3) is configured to form a lead-out hole (16) leading out of the casing (2).

According to the third aspect of the present invention, another pipe connected to each pipe (12, 13) in the pipe housing space (14) is connected to the casing (2) through the outlet hole (16). It is also possible to conceal the connecting portion between the tubes inside the casing, so that the appearance is better maintained.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) In the first embodiment, a case where the present invention is applied to an indoor unit of a wall-mounted air conditioner will be described. FIG. 1 is a sectional view showing the internal structure of the indoor unit (1) according to the present embodiment. This indoor unit (1)
The rear surface (2a) of the casing (2) is attached to a vertical wall surface (Z). In addition, indoor unit (1)
The front air inlet (3) extends from the center to the upper end of the front surface (2b) of the casing (2).
c) is provided with an upper air inlet (4).
Further, an air outlet (5) is provided at the front end of the lower surface (2d) of the casing (2). An air passage (A) is formed between the air inlets (3, 4) and the air outlet (5).

In the casing (2), air inlets (3,
A heat exchanger (6) is arranged corresponding to (4).
The heat exchanger (6) comprises a first heat exchanger (6a) which is arranged upright facing the lower end of the front air inlet (3), and an upper end of the front air inlet (3) and There are provided second and third heat exchangers (6b, 6c) which are arranged opposite to the upper surface side air inlet (4) in inclined directions different from each other so as to form an inverted V shape in side view. The second and third heat exchangers (6b, 6c) are connected at their upper ends, that is, at the rear end of the second heat exchanger (6b) and the front end of the third heat exchanger (6c). Meanwhile, the front end (lower end) of the second heat exchanger (6b) is connected to the upper end of the first heat exchanger (6a).

A cross flow fan (7) is arranged downstream of the heat exchanger (6) in the air flow direction. The cross flow fan (7) has a rotating shaft (o) extending in a horizontal axis direction (a direction perpendicular to the paper surface of FIG. 1), and has a ring shape arranged at a predetermined interval in the rotating shaft (o) direction. A plurality of blades (7b, 7b,...) Extending in the horizontal direction are provided between the plurality of plates (7a, 7a,...) In a state of being arranged in an annular shape. As shown in FIG. 4, one end of the rotating shaft (o) of the cross flow fan (7) is connected to a fan motor (M) housed on one side (right side in FIG. 4) inside the casing (2).
The output shaft (Ma) is integrally connected to the rotation.

Further, on the downstream side of the heat exchanger (6) in the air flow direction, there is provided a suction port (8a) communicating with the air outlet (5), and a cross flow fan (8) is provided from the suction port (8a). An air flow guide (8) for guiding the air flow sucked by the operation of (7) straight to the air outlet (5) is provided. The air flow guide (8) has an air outlet at its front (2b) side.
Front straight section (8
b) on the downstream side in the air flow direction, and projecting in an arc shape from the upper end (upstream end) of the front side straight portion (8b) toward the outer periphery of the cross flow fan (7). It has an arc-shaped portion (8c) on the upstream side. This arc-shaped part
(8c) is located closer to the front surface (2b) of the casing (2) than the rotation axis (o) (center of rotation) of the crossflow fan (7), and has a larger radius of curvature than the crossflow fan (7). It bulges in an arc shape along the fan (7) and is formed integrally with the front-side straight portion (8b). The air flow guide portion (8) has a rear straight portion (8d) that extends substantially straight toward the air outlet (5) on the rear surface (2a) side, which is the side opposite to the arcuate portion (8c). And a protruding portion (8e) protruding from the upper end of the back side linear portion (8d) toward the back surface (2a) along a substantially tangential direction of the cross flow fan (7). The air flow guide (8) is an arc-shaped part
(8c) is arranged on the upper side and the protruding portion (8e) is positioned on the lower side, and the upstream end of the protruding portion (8e) and the arc-shaped portion are arranged.
The suction port (8a) is formed between the intake port (8c) and the upstream end.

Further, as shown in FIG. 3, the cross flow fan (7) is driven by the fan motor (M) to move from the upper side to the lower side in FIG. ) Side rotation, that is, counterclockwise rotation, so that the wind speed distribution of the air flow from the suction port (8a) to the air outlet (5) is increased on the arc-shaped part (8c) side. ing. In addition, cross flow fan from suction port (8a)
The air flow sucked by (7) flows in a circular arc along the arc-shaped portion (8c), is converted into a linear flow between the two straight portions (8b, 8d), and flows into the air outlet (5). You will be guided straight.

The heat exchanger (6) includes first to third heat exchangers.
In addition to the heat exchangers (6a to 6c), the fourth to sixth heat exchangers (6a to 6c)
d to 6f). The fourth heat exchanger (6d) is arranged upright, and its upper end is the rear end (lower end) of the third heat exchanger (6c).
It is connected to. The fifth heat exchanger (6e) is disposed so as to be substantially tangential to the cross flow fan (7), and its upper end (rear end) is connected to the lower end of the fourth heat exchanger (6d). ing. The sixth heat exchanger (6f) is arranged substantially horizontally, and its rear end is connected to the lower end (front end) of the fifth heat exchanger (6e). These fourth to sixth heat exchangers (6d to 6f) are formed integrally with the first to third heat exchangers (6a to 6c). The lower end of the first heat exchanger (6a) is an air flow guide
Near the upper end of the straight part (8b) on the front side of (8), a sixth heat exchanger
The front end of (6f) is the straight part (8d) on the back side of the airflow guide (8).
The heat exchangers (6) (first to sixth heat exchangers (6a to 6f)) are connected around the cross flow fan (7) except for the air flow guide section (8). It is arranged to surround. The center of rotation (o) of the cross flow fan (7) is located above the center (n) of the casing (2). As a result, the casing (2) can be made closer to a square shape when viewed from the side, and the heat exchanger (6) can be efficiently and compactly accommodated in the casing (2), and the height direction of the casing (2) can be improved. Can be reduced in size.

The left and right side surfaces (2e, 2e) of the casing (2)
f), the side air inlets (11) (11) and (2), so that air is introduced from the left and right sides (2e, 2f) into the casing (2) upstream of the heat exchanger (6) in the air flow direction. Only the right side (2f) shown in FIG. 1 is shown). The side air inlet (11) is connected to the fourth to sixth heat exchangers (6d to 6d).
6f), the fourth to sixth heat exchangers (6d to 6d)
It is notched in a substantially J shape along the arrangement shape of 6f). In other words, the air inlets (3, 4, 11) are located on the upstream side of the heat exchanger (6) in the airflow direction, and the casing around the crossflow fan (7) excluding the airflow guide (8). The casing (2) has openings on the front surface (2b), the upper surface (2c), and the left and right side surfaces (2e, 2f) so that air is introduced into the housing (2). In this case, air is also sucked in from the left and right sides (2e, 2f) of the casing (2), and air can be introduced from all around the cross flow fan (7) except for the air flow guide (8). In addition, the intake air introduction resistance can be effectively reduced.

Here, the flow of air when the indoor unit (1) operates will be described.

As the cross flow fan (7) was driven, it was introduced into the casing (2) from each air inlet (3, 4, 11) and the temperature was adjusted by heat exchange with the heat exchanger (6). The conditioned air flows through the suction port (8) between the upstream end of the arc-shaped portion (8c) and the protruding portion (8e) that face up and down with the crossflow fan (7) in between.
a), the air inlet (8a) facing the rear side in the air flow guide (8)
After being smoothly sucked through the casing (2),
On the b) side, the lower surface (2c) of the casing (2) is formed by an arc-shaped portion (8c) bulging in an arc along the crossflow fan (7) with a larger radius of curvature than the outer periphery of the crossflow fan (7).
It is guided straight downward to the air outlet (5) that opens on the d) side and is blown into the room.

In this case, the cross flow fan (7) rotates from the upper side to the lower side around the front surface (2b) of the casing (2) and moves from the suction port (8a) to the air outlet (5). Since the wind speed distribution of the air flow is enhanced on the arc-shaped portion (8c) side, the blow-out wind speed of the conditioned air blown out from the air outlet (5) also increases as it goes to the front (2b) side. For this reason,
During the heating operation such as in winter, the warm air-conditioning air blown out from this air outlet (5) is blown downward, and the air outlet (5)
It is not necessary to forcibly adjust the blowing direction of the conditioned air by the blades or the like, and the warm conditioned air can be smoothly blown downward without affecting the blowing speed and the blowing volume of the conditioned air. In addition, the collision of the conditioned air with the blades and the like is greatly reduced, and the generation of noise can be prevented.

Further, the conditioned air from the air flow guide section (8) is guided straight to the air outlet (5) on the lower surface (2d) of the casing (2). Of the conditioned air at the front (2b) side, the conditioned air is compressed between the wall (Z) by the conditioned air with the fast wind speed at the front (2b) side. Rarely the wall (Z)
Part of the warm air-conditioning air that is effectively guided downward along the air outlet (5)
(3, 4, 11) can be prevented from being immediately sucked into the vehicle, the occurrence of a short circuit can be suppressed, and the energy efficiency of the indoor unit (1) can be improved.

As shown in FIG. 2, the lower surface side of the casing (2) is located below the heat exchanger (6) and behind the air outlet (5). Is a casing that has a pipe housing space (14)
It is provided between the left and right side surfaces (2e, 2f) of (2).
In the pipe storage space (14), a refrigerant pipe (12, 12) for circulating refrigerant and a drain pipe (13) for discharging dew condensation water and the like generated in the heat exchanger (6) are provided below. It protrudes. At the protruding end (lower end) of this refrigerant pipe (12,12),
One end of a refrigerant connection pipe (17, 17) for circulating the refrigerant to and from an outdoor unit (not shown) is connected by a flare nut (N, N), and is connected through the refrigerant connection pipe (17, 17). Refrigerant piping (12, 12) is outside the casing (2) (piping accommodation space (14)
Outside). Meanwhile, drain piping
At the protruding end (lower end) of (13), one end of a drain connection pipe (18) for connecting dew water to the outside of the room so that it can drain is connected to a flare nut (N).
The drain pipe (13) is led out of the casing (2) via the drain connection pipe (18). In this case, the refrigerant connection pipes (17, 17) are put together before and after, and the drain connection pipe
(18) are accommodated in front of the piping accommodation space (14), respectively.

This piping accommodating space (14) has a casing
It is covered from the outside by a cover (15) that can be attached to and detached from (2). The cover (15) is formed in a substantially L-shaped cross section that opens upward and on the wall (Z) side. And cover
In (15), the left and right side surfaces (15a) are
In a state where the left and right side surfaces (2e, 2f) of (2) are partially overlapped, they are fastened together by screws (not shown) and fastened to the casing (2).

On the left and right side surfaces (15a) of the cover (15), a refrigerant pipe (12, 12) and a drain pipe (13), that is, a refrigerant connection pipe (17, 17) and a drain connection pipe (18) are provided in a casing. (2) A lead hole (16) for leading outside is formed. The outlet holes (16) are located on both left and right sides (15a) of the cover (15).
It is cut out in a substantially U-shape so as to open upward with a peripheral edge left. Then, of the outlet holes (16) in the left and right side surfaces (15a), one side surface (15a) corresponding to the left side surface (2e) of the casing (2) according to the installation position of the indoor unit (1) (FIG. In this case, the opening (16) on the other side (15a) (left side in FIG. 2) has a blind plate (19) of the same shape as the side (15) so that only the opening (16) on the right side is open. Is blindfolded and shielded. The blind plate (19) is detachably attached to both left and right side surfaces (15a).

Therefore, in the present embodiment, the arc-shaped portion (8c) of the air flow guide (8) is located closer to the front surface (2b) of the casing (2) than the rotation center (o) of the cross flow fan (7). The air outlet (5) below the heat exchanger (6).
The piping housing space (14) is provided in the casing (2) corresponding to the rear of the lower side of the casing (2), so that the piping housing space (14) is
(5) A large space not partitioned by the arc-shaped portion (8c) is secured at the rear lower surface side near the rear surface, and the refrigerant pipes (12, 12) and the drain pipe (13) can be easily accommodated.

Further, the refrigerant connection pipes (17, 1) are connected to the refrigerant pipes (12, 12) and the drain pipe (13) in the pipe accommodation space (14).
7) and drain connection pipe (18) to connect the casing (2)
When the pipe is taken out, the large piping accommodation space (1
In (4), each connection pipe (17, 18) is easily routed, and when the cover (15) is removed from the casing (2), the pipes (12, 17) and (13, 18) The connection work using the flare nut (N) can be performed more easily, and the connection work between the pipes (12, 17) and (13, 18) can be simplified.

Further, the pipe housing space (14) has a cover (1).
5) Each pipe (1
2,13) can be shielded and the appearance can be kept good.

Further, since the outlet holes (16) are formed in the left and right side surfaces (15a) of the cover (15), the pipe housing space (14) is formed.
Refrigerant connection pipes (17, 17) and drain connection pipes (18) connected to the respective pipes (12, 13) are drawn out of the casing (2) through the outlet holes (16), and are connected to the pipes (12, 17). The connecting portion (flare nut (N)) between the (13) and (13, 18) is hidden in the pipe housing space (14), so that the appearance can be further enhanced. Moreover, when the outlet hole (16) on one side plate (15a) side corresponding to the left side surface (2e) of the casing (2) is opened, the other side corresponding to the right side surface (2f) of the casing (2) is opened. Unnecessary outlet holes (16) on the side plate (15a) side are shielded by the blind plate (19),
Unnecessary outlet holes (16) are blindfolded with blindboards (19) to allow indoor units
(1) It is possible to improve the appearance of the effective appearance according to the installation position.

(Second Embodiment) Next, a second embodiment will be described with reference to FIGS.

In the second embodiment, the structure of the airflow guide of the first embodiment is changed.

That is, in this embodiment, as shown in FIG. 5, the air flow guide portion (8) and the air outlet (5) are arranged substantially coaxially with the rotation center (o) of the cross flow fan (7). The swing member (21) swings back and forth with respect to (2). In this case, the air flow guide (8) and the air outlet (5) are swung by the swing member (21), so that the air is blown out from the air flow guide (8) through the air outlet (5). The air blowing direction is changed in the front-back direction without increasing the blowing resistance of the conditioned air.

At the substantially central portion of the front surface (2b) of the casing (2) facing the arc-shaped portion (8c) of the swing member (21) (air flow guide portion (8)), a front extension portion ( 23) are integrally formed. A front swing gap (22) (a swing gap) that enables the swing member (21) to swing forward is provided between the front extension portion (23) and the outer peripheral surface of the arc-shaped portion (8c). ) Is provided, and the front extension portion (23) extends inside the casing (2) along the outer periphery of the arc-shaped portion (8c) with a front swing gap (22). Become.
On the other hand, at the approximate center of the lower surface (2d) of the casing (2) facing the rear straight portion (8d) of the swing member (21), the rear extension (2
5) is integrally formed. A rear swing gap (24) (oscillation gap) that enables the swing member (21) to swing backward between the rear extension portion (25) and the rear straight portion (8d). The rear extension portion (25) is extended upward to the inside of the casing (2) with a rear swing gap (24). The rear extension portion (25) includes a lower extension portion (25a) extending above the lower front end of the pipe housing space (14) as the lower surface (2d) of the casing (2), and the lower extension portion. (25a) and an upper extending portion (25b) connected to the upper end and extending upward. The swing member (2) is provided in the front and rear swing gaps (22, 24).
A front and rear closing member (26, 27) for closing the swing gap (22, 24) following the swing of (1) is provided across the width direction of each swing gap (22, 24). The front and rear swing gaps (22, 2
4) is a closing member to allow the swinging member (21) to swing.
Blocked by (26,27).

One end of the front closing member (26) has a front extending portion (2).
3), while the other end is in sliding contact with the outer peripheral surface of the arc-shaped portion (8c) of the swinging member (21). The rear closing member (27) has one end attached to the tip (upper end) of the rear extension (25) (upper extension (25b)), and the other end attached to the swing member (21). ) Is in sliding contact with the vicinity of the upper end of the back side straight portion (8d).

Each of the closing members (26, 27) is made of a hard rubber which deforms following the swinging movement of the swinging member (21), and a portion corresponding to each swinging gap (22, 24). Are bent in a direction that is deflected by the air flow downstream of the heat exchanger (6) in the air flow direction, and the air flow causes each of the closing members (2
6,27) Sealing at the other end can be performed reliably. Thereby, when the swing member (21) swings, the front and rear swing gaps (22, 24) are formed by the front and rear closing members (26, 27).
The air conditioner is blocked by
Energy loss can be reliably prevented.

As shown in FIG. 7, the casing (2)
On the other side (left side in FIG. 7) opposite to the fan motor (M), a swing motor (29) rotatably connected to the other end of the swing member (21) is housed. ing. The swing motor (29) and the fan motor (M) are connected to each other's output shaft (29
a, Ma) on the axis of the rotation axis (o). The swing motor (29) is configured to be able to rotate forward and backward so as to enable the swing member (21) to swing back and forth.

As shown in FIG. 6, the swing member 21 (below the heat exchanger 6) and the swinging member 21
(8) A substantially rectangular pipe housing space (31) is provided in the casing (2) corresponding to the rear of the lower side of the casing (2). The piping accommodation space (31) is
It is formed so as to extend in the width direction between the front end (lower end) of (25) and the lower end of the back surface (2a). The other configuration except for the swing member is the same as that of the above-described embodiment, and the same portions are denoted by the same reference numerals and detailed description thereof will be omitted.

Therefore, in the present embodiment, in addition to the functions and effects of the first embodiment, the swing member (2
By swinging the front side of the refrigerant pipe (1) to secure a large rear swing gap (24), the refrigerant pipe (1) in the pipe accommodation space (14) is
Connection work for connecting the refrigerant connection pipes (17, 17) and the drain connection pipe (18) to the drain pipe (13) can be performed more easily.

It should be noted that the present invention is not limited to the above embodiments, but includes various other modifications. For example, in each of the above embodiments, the first to sixth
The heat exchanger (6) is constructed by sequentially connecting the heat exchangers (6a to 6f). However, as in the first modification shown in FIG. 8, the rotation center (o) of the cross flow fan (7) is substantially A heat exchanger (31) arranged so as to surround the cross flow fan (7) in a circle around the center may be formed. In this case, the heat exchangers (31) are arranged neatly in the circumferential direction in the casing (2),
It can be arranged more compactly. In addition, the heat exchanger (3
Needless to say, the configuration of 1) may be applied to the indoor unit (1) of the second embodiment.

In each of the above embodiments, the cover (15)
Is formed in a substantially L-shaped cross section, but by extending the rear straight portion (or the rear extending portion), the back surface, and both left and right side surfaces of the casing corresponding to the periphery of the piping housing space downward, the piping housing space is reduced. The cover may be a flat cover that covers only the lower surface of.

Further, in each of the above embodiments, the rear surface (2a) of the casing (2) is straight along the wall surface (Z). However, as in the second modification shown in FIG. ), The upper and lower sides of the back (2a) are curved away from the wall (Z), and the curved portion (41) of the back (2a) is
(6) Casing (2) on the upstream side in the air flow direction
A rear air inlet (42) through which air is introduced from the curved portion (41) may be provided. In this case, air is also sucked into the casing (2) from the curved portion (41) of the rear surface (2a) of the casing (2) through the rear air inlet (42), and the intake air introduction resistance is reduced. Can be further reduced. Further, the rear surface of the casing may be curved so that at least one of the upper and lower sides thereof is separated from the wall surface. In this case, only one curved portion is provided with a rear air inlet. Furthermore, this curved part (4
1) Of course, the configuration of the (back side air suction port (42)) may be applied to the second embodiment or the first modification.

[0046]

As described above, according to the wall-mounted air conditioner of the first aspect of the present invention, the arc-shaped portion is located on the front side with respect to the center of rotation of the cross flow fan, so that the air blowing inside the casing is prevented. A wide piping accommodation space that is not partitioned by arcs can be secured at the position on the lower back side behind the outlet, so that refrigerant piping and drain piping can be easily accommodated, and connection work with other piping in the piping accommodation space can be performed. Easy to do.

According to the wall-mounted air conditioner according to the second aspect of the present invention, since the pipe housing space is covered from the outside by the removable cover, each pipe can be shielded and the appearance can be kept good. At the same time, connection work to each pipe can be performed with the cover removed, so that the connection work can be further simplified.

Further, according to the wall-mounted air conditioner according to the third aspect of the present invention, the outlet holes are formed in the side surfaces of the cover corresponding to one of the left and right side surfaces of the casing.
The connection portion with another pipe in the pipe accommodation space can be hidden in the casing, and the appearance can be kept better.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of an indoor unit according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the indoor unit with a cover removed from the casing.

FIG. 3 is a diagram showing streamlines of air flowing inside the indoor unit.

FIG. 4 is a front view of the indoor unit.

FIG. 5 is a diagram corresponding to FIG. 1 according to a second embodiment of the present invention.

FIG. 6 is a diagram corresponding to FIG. 2;

FIG. 7 is a diagram corresponding to FIG. 3;

FIG. 8 is a diagram corresponding to FIG. 1 according to a first modification of the first embodiment.

FIG. 9 is a side view of an indoor unit according to a second modification of the first embodiment.

FIG. 10 is a diagram corresponding to FIG. 1 according to a conventional example.

[Explanation of symbols]

(1) Indoor unit (air conditioner) (2) Casing (2a) Back (2b) Front (2d) Bottom (2e, 2f) Side (3) Front air intake (air intake) (4) Top Air inlet (air inlet) (5) Air outlet (6,31) Heat exchanger (7) Cross flow fan (8) Air flow guide (8a) Suction port (8c) Arc-shaped part (11) Side surface (12) Refrigerant piping (13) Drain piping (15) Cover (15a) Side (16) Outlet (42) Rear air intake (air intake) (A) Air passage (Z) Wall (n) Center of casing (o) Center of rotation axis of cross flow fan (rotation center)

Claims (3)

[Claims] 1. A casing (2) having a rear surface (2a) attached to a wall surface (Z);
(2) an air inlet (3, 4, 11, 42) for sucking air into the inside; an air outlet (5) provided in the casing (2) for blowing temperature-controlled air into a room; The air passage (A) provided between the port (3,4,11,42) and the air outlet (5) and the air inlet (3,4,11,42) Heat exchanger (6, 31), a cross-flow fan (7) arranged downstream of the heat exchanger (6, 31) in the air flow, and a cross-flow fan (7) larger than the outer periphery of the cross-flow fan (7). A circular arc-shaped portion (8c) swelling in an arc along the cross flow fan (7) with a radius of curvature, and a suction port communicating with the air outlet (5) at an upstream end of the arc-shaped portion (8c). (8a) is formed, and an air flow guide part (8) for guiding the air flow sucked from the suction port (8a) by the operation of the cross flow fan (7) straight to the air outlet (5). From the air inlet (3,4,11,42). After adjusting the temperature of the air introduced into the thing (2) in the heat exchanger (6, 31),
In the wall-mounted type air conditioner in which the cross flow fan (7) sucks into the air flow guide portion (8) and blows out from the air outlet (5), the air flow guide portion (8) is a cross flow fan (7) The arc-shaped portion (8c) is located on the front (2b) side of the casing (2) with respect to the rotation center (o) of the casing (2), and the suction port (8a) is located on the rear (2a) side of the casing (2). While the air outlet (5) is open toward the front side of the lower surface (2d) of the casing (2), and is lower than the heat exchanger (6, 31) and the air blower is open. Exit
A pipe housing space (14) is provided between the left and right side surfaces (2e, 2f) of the casing (2) near the rear surface on the lower surface side in the casing (2) corresponding to the rear of (5). The pipe housing space (14) houses a refrigerant pipe (12) used for circulation of the refrigerant, and a drain pipe (13) for discharging dew condensation water and the like generated in the heat exchangers (6, 31). A wall-mounted air conditioner. 2. The wall-mounted air conditioner according to claim 1, wherein the pipe housing space (14) is covered by a cover (15) detachable from the casing (2). 3. The left and right sides (2e, 2e) of the casing (2).
f) A side surface (15a) of the cover (15) corresponding to one of the f) has an outlet hole (16) for leading the refrigerant pipe (12) and the drain pipe (13) out of the casing (2). 2. The wall-mounted air conditioner according to 2.