JP2002295891A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformize the wind speed distribution of an air outlet of an indoor unit, and to improve a heat exchange efficiency, without increasing the size of an indoor unit in an air conditioner having a centrifugal blower. SOLUTION: The air conditioner comprises a casing 11, a heat exchanger 30 and a turbofan 40. Air passages 35b and 35d, connected from the turbofan 40 to a plurality of air passages 35 to the plurality of outlets 20 via the exchanger 30 to the outlet 20, facing the wind direction from the turbofan 40, are disposed so as to be narrower than other air passages 35a and 35c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an air conditioner, and more particularly to an air conditioner buried in a ceiling.

[0002]

2. Description of the Related Art An air conditioner has an outdoor unit having a compressor, a fan, a heat exchanger and the like and installed outdoors, and an indoor unit having a fan and a heat exchanger. As indoor units, wall-mounted indoor units, ceiling-mounted indoor units, and the like are provided.

An indoor unit of a ceiling embedded type mainly includes a casing having a suction port and an air outlet on a lower surface, a centrifugal blower as a fan disposed inside the casing, and a centrifugal blower and an air outlet. Heat exchanger. In such an indoor unit, the air in the room is taken into the inside of the casing from the suction port by the centrifugal blower, and the taken air is blown in the lateral direction. Then, the air sent from the centrifugal blower is heat-exchanged in a heat exchanger arranged so as to surround the centrifugal blower, and then supplied into the room from the outlet.

[0004]

The air flow from the air outlet of the air conditioner may be non-uniform due to the shape of the internal ventilation section. In particular, since the ceiling-embedded-type indoor unit, which limits the size of the casing to be installed in the ceiling, it is arranged a centrifugal blower and a heat exchanger in the space of the limited casing, it is difficult to prevent uneven. When the blowing is nonuniform, or ventilation sound is generated from the portion having strong airflow, also cooling, which leads to reduction in the heating performance.

Further, for the same reason as described above, the size of the heat exchanger of the ceiling-embedded indoor unit is limited. Therefore, the heat exchange between the heat exchanger and air is limited in a limited space. There is a need to improve efficiency.

[0006] It is an object of the present invention to provide an air conditioner having a centrifugal blower to make the wind speed distribution at the indoor unit outlet uniform. Further, without increasing the size of the indoor unit is to improve the heat exchange efficiency.

[0007]

An air conditioner according to a first aspect of the present invention includes a casing, a centrifugal blower, and a heat exchanger. The casing has a suction port for sucking air into the inside and a plurality of outlets for blowing air to the outside. The centrifugal blower is arranged inside the casing. The heat exchanger is provided inside the casing so as to surround the centrifugal blower. In the heat exchanger, among the air passages from the centrifugal blower to the air outlets through the heat exchanger, the air passage from the centrifugal blower to the air outlet facing the wind direction from the centrifugal blower is compared with other air passages. It is arranged to be narrow.

[0008] In this air conditioner, when the centrifugal blower is driven, air is sucked into the casing from the suction port, and air is blown out from the plurality of outlets. At this time, the air passages formed between the centrifugal blower and the plurality of outlets each have a resistance depending on the shape of the casing and the positions of the outlets, and the mutual positional relationship between the centrifugal blower, the heat exchanger, and the outlets. different. For this reason, the wind speed of the air blown out from each of the plurality of outlets is different, and in some cases, a ventilation noise may be generated, and cooling and heating performance may be reduced.

More specifically, the air volume from the outlet facing the wind direction from the centrifugal blower is larger than that from the outlet not facing the wind direction from the centrifugal blower. Therefore, in this air conditioner, the heat exchanger is arranged such that, among the plurality of air passages, the air passage leading to the air outlet facing the wind direction from the centrifugal blower is narrower than the other air passages. .
Therefore, the resistance of the air passage is increased, the flow velocity of the air is suppressed, it is possible to achieve uniform air speed distribution blown out from the plurality of air outlets. As a result, it is possible to suppress the ventilation noise and to suppress the deterioration of the cooling and heating performance.

[0010] An air conditioner according to a second aspect is the air conditioner according to the first aspect, wherein the casing has a rectangular shape. The heat exchanger has first, second, and third proximity portions that are closer to the side wall of the casing as compared to both sides thereof, respectively, in reverse order with respect to the rotation direction of the centrifugal blower. The length of the first region between the proximity portion and the second proximity portion is substantially the same as the length of the second region between the second proximity portion and the third proximity portion.

Due to the air resistance due to the width of the air passage, the flow rate of the air blown out from the plurality of outlets is uniform, and the flow rates of the air passing through the first and second regions are substantially equal. Moreover, since the lengths of the heat exchangers in the first and second regions are substantially equal, the heat exchange efficiency is substantially the same. Thereby, the heat exchange efficiency in each air passage is made uniform, and the cooling and heating efficiency is improved,
Temperature distribution of the air from the outlets are made uniform.

[0012] The air conditioner according to claim 3, and a casing and a centrifugal blower and a heat exchanger. The casing is
It is rectangular and has a suction port for sucking air inside and a plurality of outlets for blowing air outside. The centrifugal blower is located inside the casing. The heat exchanger is provided inside the casing so as to surround the centrifugal blower.
In addition, the heat exchanger has first, second, and third proximity portions that are closer to the casing than on both sides thereof, respectively, in reverse order to the rotation direction of the centrifugal blower. The first and third proximate portions of the heat exchanger are located near an axis that passes through the center of the centrifugal blower and is orthogonal to the opposing first and second side walls of the casing. The second proximity portion of the heat exchanger is disposed so as to be shifted toward the first proximity portion of the heat exchanger with respect to an axis passing through the center of the centrifugal blower and orthogonal to the third and fourth side walls facing the casing. . A plurality of air outlets, in each of the first and second side walls of the casing, the first and second blow-out opening disposed so as to sandwich the first proximity unit, first provided so as to sandwich the third proximity portions and a third and fourth outlet.

In this air conditioner, when the centrifugal blower is driven, air is sucked into the casing from the suction port, and air is blown out from four outlets. At this time, the position of the casing of the shape and the air outlet, and further a centrifugal blower, the mutual positional relationship of the heat exchanger and outlet, respectively, the air passage resistance formed between the centrifugal fan and a plurality of outlet different. For this reason, the wind speed of the air blown out from each of the plurality of outlets is different, and in some cases, a ventilation noise may be generated, and cooling and heating performance may be reduced.

More specifically, in this air conditioner, the first side wall of the casing has the first side wall sandwiching the first adjacent portion.
An outlet and a second outlet are arranged. Therefore,
If the downstream side in the rotation direction of the centrifugal fan and the first outlet,
Assuming that the upstream side is the second outlet, the wind direction of the centrifugal blower is opposite to the second outlet, so that the air volume is larger, and conversely, the air volume is larger for the first outlet than for the second outlet. less then. This also applies to the third outlet and a fourth outlet.

Therefore, in this air conditioner, the heat exchanger is disposed at an angle with respect to an axis passing through the center of the centrifugal blower and perpendicular to the side wall of the casing to reduce the resistance of the air passage from the centrifugal blower to the outlet. Adjustments are made to equalize the air volume from each outlet.

Specifically, by shifting the second proximity portion to the first proximity side, the air passage formed between the first proximity portion and the second proximity portion is moved to the third proximity portion and the second proximity portion. It is narrower than the air passage formed between the first and second parts. Since the narrowed air passage creates an air resistance in the flow of the air blown from the centrifugal blower, the flow rate of the air blown out from the second blowout port through the first and second proximity portions is different from that of the other airflow passage. And the distribution of wind speeds blown out from the plurality of outlets can be made uniform. Therefore, it is possible to suppress the ventilation noise and to suppress the deterioration of the cooling and heating performance.

The air conditioner according to the fourth aspect is the third aspect.
The length of the first region between the first proximity portion and the second proximity portion of the heat exchanger is the first length between the second proximity portion and the third proximity portion. It is almost the same as the length of the two regions.

Here, the heat exchange efficiency in each air passage is substantially the same as in the case of the second aspect. Thereby, the heat exchange efficiency in each air passage is made uniform, the cooling and heating efficiency is improved, and the temperature distribution of air from each outlet is made uniform.

[0019] The air conditioner according to claim 5, claim 2
Or the air conditioner according to 4, wherein the heat exchanger is a first heat exchanger.
The region has a bent portion that bends toward the inside of the casing.

Since the position of the second proximity portion is biased toward the first proximity portion, it is necessary to bend the heat exchangers in the first and second regions to make the lengths equal. Here, the heat exchanger in the first region is bent toward the inside of the casing. Thereby, the length of the heat exchanger is equalized without changing the size of the casing, and the configuration is simplified.

[0021] The air conditioner according to claim 6, claim 1
An air conditioner according to any one of 5, the heat exchanger consists of a connecting portion connecting a plurality of heat exchanger body and a plurality of heat exchanger body.

[0022] By bending the heat exchanger, distortion occurs in the structure of the internal heat exchanger. For this reason, there is a possibility that a defect due to bending of the heat exchanger may occur. When the bent portion is large, it increases the number of correspondingly bent processing, increases the frequency of failure occurs.

Here, since the number of heat exchangers of the indoor unit is two or more, the number of bending operations per one can be reduced. As a result, the frequency of occurrence of defects in the heat exchanger can be suppressed.

When a plurality of heat exchangers having the same shape are used, the types of heat exchangers to be manufactured are reduced.
Labor saving and cost reduction of manufacturing can be achieved. Claim 7
The air conditioner described in (1) includes a casing, a centrifugal blower, a heat exchanger, and a refrigerant supply unit. The casing has a suction port for sucking air therein, and a plurality of outlets for blowing air to the outside, each of which is arranged in a rectangular shape. Centrifugal blower is disposed inside the casing. The heat exchanger is provided inside the casing so as to surround the centrifugal blower, and is disposed in a rectangular shape inside the plurality of outlets. Coolant supply unit is provided at the corner portions of the casing, for supplying refrigerant to the heat exchanger. The heat exchanger has an extending part on the downstream side in the rotation direction of the centrifugal blower with respect to the refrigerant supply part.

[0025] In this air conditioner, by centrifugal fan is driven, air is sucked from the suction port to the inner casing, the air is blown further from the plurality of air outlets. At this time, it is formed between the centrifugal blower and the plurality of outlets, depending on the shape of the casing, the position of the outlet, the position of the refrigerant supply unit, and the mutual positional relationship between the centrifugal blower, the heat exchanger, and the outlet. The air passages have different resistances. For this reason, the wind speed of the air blown out from each of the plurality of outlets is different. In particular, since the coolant supply unit is provided, the air passage toward the air outlet near the coolant supply unit is narrowed. Therefore, increased air flow rate in the downstream side in the rotational direction of the centrifugal fan, turbulence occurs in the flow of air. For this reason, the air blown from the outlet near the refrigerant supply unit is blown out without being sufficiently conditioned.

Therefore, in this air conditioner, an extension portion is provided in the heat exchanger on the downstream side in the rotation direction of the centrifugal blower with respect to the refrigerant supply portion among the plurality of air passages. This allows
Since the air conditioning blown out from the plurality of outlets can be made uniform, deterioration in cooling and heating performance can be suppressed.

[0027] The air conditioner according to the eighth aspect is the seventh aspect.
Wherein the extending portion is a bent portion that is bent in an inner direction of the casing. Here, the extending portion of the heat exchanger on the downstream side in the rotation direction of the centrifugal blower with respect to the refrigerant supply portion is a bent portion that is bent in the inner direction of the casing. This makes it possible to stretch the length of the heat exchanger without changing the size of the casing.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] FIG. 1 is an external perspective view of an indoor unit 1 of an air conditioner according to a first embodiment of the present invention.
2 shows a vertical sectional view of the indoor unit in a plane including the centrifugal blower, and FIG. 3 shows a horizontal sectional view thereof.

[0029] <Configuration> The indoor unit 1 is a ceiling-embedded, and a casing 11 that is embedded in the ceiling.
Further, a turbo fan (centrifugal blower) 40 and a heat exchanger 30 are provided inside the casing 11. The indoor unit 1 takes in the air in the installed room, performs air conditioning, and supplies the air after the heat exchange to the room.

The casing 11 is a case for holding the members of the indoor unit 1 therein. The casing 11 has a rectangular parallelepiped outer shape, and has a bottom plate 12 at the bottom thereof. In the long sides of the bottom plate 12, the air outlet 20 is formed on the outside, the suction port 21 is provided on the inside of the air outlet 20. The outlet 20 is a vent for supplying air conditioned by the indoor unit 1 to the room, and the intake 21 is a vent for taking air from the room into the indoor unit 1. The outlet 20 has a first outlet 20a provided on the downstream side in the rotation direction of the turbo fan 40 from the center and a second outlet provided on the upstream side in the rotation direction on one of the pair of long sides of the casing 11. and a blowout port 20b, the other long side, and the third outlet 20c which is provided at a position facing the second outlet 20b in the direction of rotation downstream of the center, the first blow in the rotation direction upstream side and a fourth outlet 20d provided in a position opposite to the outlet 20a.

The turbo fan 40 is located substantially at the center of the casing 11. Turbofan 40 is provided with a plurality of wings on the outer peripheral portion, by rotating in the direction of arrow R in FIG. 3, extruded air inside the turbofan 40 in the rotational direction, of the air into the indoor unit 1 flows Cause.

The heat exchanger 30 is a member that exchanges heat with the passing air. And this heat exchanger 30
The first, second, and third proximity portions 50a, 50 are formed substantially in a rhombic shape so as to surround the turbofan 40, and are closer to the inner wall of the casing 11 than the other portions on both sides.
b, it has a 50c. The first proximity portion 50a is located near the axis 14 that passes through the center of the turbo fan 40 and is orthogonal to the long side of the casing 11, and is sandwiched between the first outlet 20a and the second outlet 20b. . The third proximity portions 50c
Is located on the opposite side to the first proximity portion 50a,
It is sandwiched between the third outlet 20c and the fourth outlet 20d. Further, the second proximity portion 50b is located at a predetermined angle from the shaft 15 passing through the center of the turbofan 40 and orthogonal to the short side of the casing 11 on the side of the second outlet 20b (the first proximity portion 50a
(Side). The heat exchanger 30 is connected at its end to the refrigerant supply unit 31. Further, the refrigerant supply unit 31 is disposed so as to be deviated toward the fourth outlet 20 d with respect to the shaft 15.

By arranging the heat exchanger 30 as described above, an air passage from the turbo fan 40 to each outlet is formed. That is, the first air passage 35a from the turbo fan 40 to the first outlet 20a is
It is formed between the the first proximity unit 50a, turbofan 4
From 0 second air passage 35b leading to the second outlet 20b is formed between the first proximal part 50a and a second proximity unit 50b,
The third air passage 35c extending from the turbofan 40 to the third outlet 20c is formed between the second proximity part 50b and the third proximity portion 50c, a fourth outlet 20d from the turbofan 40
Is formed between the third proximity part 50c and the coolant supply part 31.

The respective regions 30a to 30d of the heat exchanger 30 are arranged corresponding to the respective air passages 35a to 35d. That is, of the heat exchanger 30, refrigerant supply section 3
The first region 30a between 1 and the first proximity unit 50a is disposed in the first air passage 35a, the second region 30b between the first proximal part 50a and a second proximity part 50b and the second air passage 35b
Are located in Also, among the heat exchanger 30, the second
Third region 30 between proximity portion 50b and third proximity portion 50c
c is disposed in the third air passage 35c, and the third proximity portion 50c
A fourth region 30d between the second air passage 35d and the refrigerant supply unit 31 is disposed in the fourth air passage 35d.

[0035] By disposing the heat exchanger 30 is inclined as described above, the first and third regions 30a,
30c has a shorter length than the second and fourth regions 30b and 30d.

<Operation> The operation of the indoor unit 1 will be described. First, as the turbo fan 40 rotates, air flows inside the indoor unit 1. The air is taken into the interior of the indoor unit 1 from the suction port 21 facing the room. Entrapped air, the turbo fan 40, air is blown around it. The extruded air is supplied to the turbo fan 40
Heat is exchanged by the heat exchanger 30 arranged around the
The air is supplied from the outlets 20a to 20d into the room.

Here, when the wind speed (air volume) of each of the air passages 35a to 35d when the turbo fan 40 rotates is considered, the following is obtained. First, consider the second outlet 20b and the third outlet 20c side with respect to the axis 14.

The rotation direction and the outlets 20b of the turbo fan 40, the arrangement of 20c, the second air outlet 20b is opposed against wind direction from the turbofan 40, if the heat exchanger 30 is not turbo air flow rate of the fan 40 increases. On the other hand, the third outlet 20 c is arranged at a position along the wind direction from the turbo fan 40, and does not face the wind direction from the turbo fan 40. That is, the third outlet 20c is arranged at a position where the air flow rate from the turbo fan 40 is reduced when the heat exchanger 30 is not provided. This is the same for the first outlet 20a and the fourth outlet 20d with respect to the shaft 14. In the case where the heat exchanger 30 is not provided due to the rotation direction of the turbo fan 40 and the arrangement of the outlets 20a and 20d. In this case, the air flow velocity to the fourth air outlet 20d becomes faster than that of the first air passage 35a.

However, in this embodiment, as described above, the heat exchanger 30 formed in a substantially rhombic shape is arranged to be inclined with respect to the shaft 15, and the air passages 35a to the air outlets 20a to 20d are provided. The width (length) of each region of the heat exchanger 30 in 〜35d is not uniform. That is, the widths of the second and fourth regions 30b and 30d are the same as those of the first and third regions 30a and 30d.
It is narrower than the width of 30c.

[0040] Thus, the second and fourth regions 30b, 3
0d, the resistance of air when passing through the first and third regions 3
It becomes larger than the resistance when passing through 0a and 30c. As a result, the amount (wind velocity) of air that passes through each of the air passages 35a to 35d and is blown out from each of the air outlets 20a to 20d is made uniform.

Second Embodiment <Structure> FIG. 4 is a horizontal sectional view of an indoor unit 2 of an air conditioner according to a second embodiment of the present invention.

In the first embodiment, the resistance of each air passage is changed by shifting the arrangement of the heat exchanger, and the air volume from each outlet is made uniform. In this case, the length in each region of the heat exchanger disposed in each air passage, that is, the heat exchange area is different. Therefore, although the air volume from each outlet is made uniform, the temperature distribution may become uneven.

Therefore, in the second embodiment, the purpose is to make the temperature distribution of the air blown out from each outlet also uniform. Accordingly, in this second embodiment, only the configuration of the heat exchanger is different from the first embodiment, the other structure is the same.

The heat exchanger 32 is a member for exchanging heat with the air passing therethrough.
It is arranged so that it surrounds. The heat exchanger 32 is provided with first and second outlets 20 a, 2 a with respect to an axis 15 passing through the center of the turbofan 40 and orthogonal to a short side of the casing 11.
The first main body 321 arranged on the 0b side and the second main body 32 arranged on the third and fourth outlets 20c, 20d on the opposite side.
And 2. One end of the first main body 321 and the second main body 322 in the direction along the shaft 15 are connected by the connection member 55, and the other end is connected to the refrigerant supply unit 33. In addition, the refrigerant supply part 33 is disposed so as to be deviated toward the fourth outlet 20 d with respect to the shaft 15.

The heat exchanger 32 has first, second, and third proximity portions 53a, 53b, 53c that are closer to the inner wall of the casing 11 than the other portions on both sides. The first proximity portion 53a is located near the shaft 14, and is sandwiched between the first outlet 20a and the second outlet 20b. The third proximity portion 53c is located on the opposite side to the first proximity portion 53a, and is sandwiched between the third outlet 20c and the fourth outlet 20d. The second proximity unit 53b
It is positioned in the vicinity of the axis 37 inclined from the shaft 15 in the second blow-out port 20b side by a predetermined angle.

By arranging the heat exchanger 30 as described above, an air passage from the turbo fan 40 to each outlet is formed. That is, the first air passage 35a is a coolant supply unit 33 extending from the turbofan 40 to the first air outlet 20a
And the first adjacent portion 53a, the turbo fan 4
A second air passage 35b from 0 to the second outlet 20b is formed between the first proximity portion 53a and the second proximity portion 53b,
A third air passage 35c extending from the turbo fan 40 to the third outlet 20c is formed between the second proximity portion 53b and the third proximity portion 53c.
Is formed between the third proximity portion 53c and the coolant supply portion 33.

The first region 32a of the first body 321 of the heat exchanger 32 is disposed in the first air passage 35a, and the second region 32b of the first body 321 is disposed in the second air passage 35b. Have been. Further, a third region 32c of the second main body 322 of the heat exchanger 32 is disposed in the third air passage 35c, and a fourth region 3c of the second main body 322 is formed.
2d is arranged in the fourth air passage 35d.

[0048] In the heat exchanger 32, the first and third regions 32a, bent portion 54 bulging outwardly of the casing 11 is formed in the 32c, the second and fourth regions 32b, the 32d expands inside the casing 11 A bent portion 52 is formed. Thus, the lengths of the heat exchangers in the four regions 32a to 32d are substantially equal, and therefore, the heat exchange areas of the respective regions are substantially equal.

<Operation> The basic operation of the indoor unit 2 is the same as the operation in the first embodiment. Here, as described in the first embodiment, considering the side of the second outlet 20b and the third outlet 20c with respect to the shaft 14, if there is no heat exchanger, the air flow rate to the second outlet 20b Is faster than the air flow velocity to the third outlet 20c. The same is true for the first outlet 20a and the fourth outlet 20d with respect to the shaft 14, and the air flow rate to the fourth outlet 20d is the first
Faster than that of the air flow rate into the air outlet 20a.

In this embodiment, similarly to the first embodiment,
Second proximity unit 53b are arranged to be inclined with respect to the axis 15, the amount of air blown from the outlets 20a to 20d (wind speed) is made uniform. Furthermore, the heat exchange area in each region by bending the heat exchanger 32 is substantially equal, the heat exchange efficiency in each air passage 35a~35d are equalized. Thereby, the efficiency of cooling and heating can be improved as compared with the conventional air conditioner. Further, the temperature distribution of the air blown out from each of the outlets 20a to 20d can be made uniform.

[0051] Particularly, since to form the bent portion 52 to the heat exchanger 32 has secured heat exchange area can be increased heat exchange area without increasing the size of the indoor unit 2. Shown in Third Embodiment FIG. 5 a horizontal sectional view of the indoor unit 3 of the air conditioner according to a third embodiment of the <Configuration> present invention.

[0052] casing 13, cross-section is substantially square shaped, chamfered four corners. And
On the outer peripheral portion of the bottom plate, an outlet 22 and a suction port (not shown) are arranged along each of the four sides. Further, a turbo fan 40 is arranged at the center of the casing 13.

The heat exchanger 34 is arranged in a substantially square shape so as to surround the turbo fan 40 inside the outlet 22, and both ends are connected to a refrigerant supply part 38 arranged at one corner of the casing 13. Have been. And, in order to arrange this heat exchanger 34 along each side of the square,
And a bent portion 56 at positions corresponding to each corner. In addition, of the four linear portions of the heat exchanger 34, a bent portion 5 that bends so as to expand inside the casing 13 on the downstream side in the rotation direction of the turbo fan 40 with respect to the refrigerant supply portion 38.
Two.

[0054] <Operation> The basic operation of the indoor unit 3 is the same as the operation in the first embodiment. In this embodiment, similarly to the above-described embodiment, each air outlet 22
Air passages are respectively formed in the paths leading to. But,
Of the four air passages, in the air passage on the downstream side in the rotation direction of the turbo fan 40 that is close to the refrigerant supply unit 38,
The air is guided and guided to a wall or the like of the refrigerant supply unit 38, and the amount of air flowing increases as compared with other air passages.

Therefore, in this embodiment, the bent portion 52 is provided in a region of the heat exchanger located in the air passage through which a large amount of air flows, thereby increasing the heat exchange area. As a result, the heat exchange efficiency is improved, and the air blown out from each blowout port 22 is blown out after being substantially uniformly conditioned.
Cooling and heating performance is improved.

[0056]

[Effect of the Invention] In the air conditioner of claim 1, it is possible to achieve uniform air speed distribution blown out from the plurality of air outlets. As a result, it is possible to suppress the ventilation noise and to suppress the deterioration of the cooling and heating performance.

In the air conditioner of the second aspect, the heat exchange efficiency in each air passage becomes substantially the same by making the lengths of the first and second regions of the heat exchanger substantially the same. As a result, the cooling and heating efficiency is improved, and the temperature distribution of the air from each outlet is made uniform.

According to the air conditioner of the third aspect, the distribution of wind speeds blown out from the plurality of outlets can be made uniform. Thus, while suppressing the ventilation sound, it is possible to suppress cooling, a reduction in the heating performance.

[0059] In the air conditioner of claim 4, similarly to the case of claim 2, cooling, with heating efficiency is improved, the temperature distribution of the air from the outlets are made uniform. In the air conditioner of claim 5, by which is bent heat exchanger of the first region toward the interior of the casing, has equal length of the heat exchanger without changing the size of the casing, The configuration is simplified.

In the air conditioner according to the sixth aspect, since the number of heat exchangers in the indoor unit is two or more, the number of bending operations per one unit can be reduced. In the air conditioner according to the seventh aspect, of the plurality of air passages, the extending portion is provided in the heat exchanger on the downstream side in the rotation direction of the centrifugal blower with respect to the refrigerant supply portion. Accordingly, it is possible to achieve uniform air-conditioning that is blown out from the plurality of air outlets, it is possible to suppress cooling, a decrease in heating performance.

In the air conditioner according to the eighth aspect, since the extending portion is a bent portion which is bent in the inner direction of the casing, the length of the heat exchanger can be extended without changing the size of the casing.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an indoor unit of an air conditioner according to first and second embodiments.

FIG. 2 is a vertical sectional view of the indoor unit of the air conditioner according to the first embodiment.

FIG. 3 is a horizontal sectional view of the indoor unit of the air conditioner according to the first embodiment.

[4] a horizontal cross-sectional view of an indoor unit of an air conditioner according to the second embodiment.

FIG. 5 is a horizontal sectional view of an indoor unit of an air conditioner according to a third embodiment.

[Explanation of symbols]

 1, 2, 3 indoor unit 14, 15 shaft 20, 22 outlet 21 inlet 30, 32, 34 heat exchanger 31, 33, 38 refrigerant supply unit 35 air passage 36, 37 shaft 40 turbo fan 50 proximity unit 53 bending part

Front page of the continuation (72) inventor Sakai, Osaka Prefecture KANAOKA-cho address 1304 Makio Takeuchi Daikin Industries, Ltd. Sakai Plant KANAOKA factory in the F-term (reference) 3L051 BE04

Claims (8)

[Claims] A suction port (2) for sucking air into the interior.
1) and a plurality of outlets (2
0), a centrifugal blower (40) disposed inside the casing (11), and a casing (11) provided to surround the centrifugal blower (40). A heat exchanger (30), and a plurality of air passages (35b, 35b from the centrifugal blower (40) to the plurality of outlets (20) via the heat exchanger (30).
Of 35c), wherein as the air passage leading to the wind direction opposed to the air outlet from the centrifugal fan (30) (35b) is narrower than the other air passage (35c), said heat exchanger (30) The air conditioner (1) in which is disposed. 2. The casing (11) has a rectangular shape, and the heat exchanger (32) has first, second and third heat exchangers closer to a side wall of the casing (11) than both sides thereof. Proximity portions (53a, 53b, 53c) are provided in reverse order to the rotation direction (R) of the centrifugal blower, and the first proximity portion (53a) and the second proximity portion of the heat exchanger (32) are provided. The first area (32b) between the section (53b)
The length of the second proximal part and (53b) third closest portion (5
The air conditioner (2) according to claim 1, wherein the length of the second region (32c) between the second region (3c) and the second region (32c) is substantially the same. 3. A suction port for sucking air into (2
1) and a plurality of outlets (2
0), a centrifugal blower (40) arranged inside the casing (11), and provided inside the casing (11) so as to surround the centrifugal blower (40). Heat exchanger (30), wherein the heat exchanger (30) has first, second, and third proximity portions (50a, 50b) closer to the casing (11) than both sides thereof. , 50c) in the reverse order with respect to the rotation direction (R) of the centrifugal blower. The first proximity part (50a) and the third part of the heat exchanger (30)
The proximity part (50c) passes through the center of the centrifugal blower (40) and opposes the first and second parts of the casing (11).
Located in the vicinity of the axis (14) perpendicular to the side wall, the second proximal part of the heat exchanger (30, 32) (50b) is centered on the street and the casing of the centrifugal fan (40) (11)
A plurality of air outlets (20), which are arranged so as to be shifted toward a first adjacent portion (50a) of the heat exchanger (30) with respect to an axis (15) orthogonal to the third and fourth side walls facing each other. Is the casing (11)
In each of the first and second side walls, the first
First and second portions provided so as to sandwich the proximity portion (50a).
And outlet (20a, 20b), the third proximity portions (50
Third and fourth blow-out opening disposed so as to sandwich the c) (20
c, 20d) and a has an air conditioner (1). 4. A length of a first region (32b) of the heat exchanger (32) between the first proximity portion (53a) and the second proximity portion (53b) is equal to the length of the second proximity portion. The air conditioner (2) according to claim 3, wherein the length of the second region (32c) between the portion (53b) and the third proximity portion (53c) is substantially the same. 5. The heat exchanger (32) according to claim 2, wherein the first region (32b) has a bent portion (52) that is bent in an inward direction of the casing (11). The air conditioner (2) described. 6. The heat exchanger (32) comprises a plurality of heat exchanger bodies (321, 322) and a connecting portion (55) connecting the plurality of heat exchanger bodies (32).
The air conditioner (2) according to any one of claims 1 to 5. 7. A suction port for sucking air into (2
1), a casing (13) having a plurality of outlets (22) for blowing air to the outside, each of which is arranged in a rectangular shape, and a centrifugal blower (40) arranged inside the casing (13). ), Provided inside the casing (13) so as to surround the centrifugal blower (40), and the plurality of outlets (22).
A heat exchanger (34) arranged in a rectangular shape inside the container; a refrigerant supply provided at one corner of the rectangular heat exchanger (34) and supplying a refrigerant to the heat exchanger (34) (38), wherein the heat exchanger (34) has an extending part (52) on the downstream side in the rotation direction (R) of the centrifugal blower (40) with respect to the refrigerant supply part (38). Yes, air conditioner (3). 8. The extending portion (52) is a bent portion (52) which is bent in an inner direction of the casing (11).
An air conditioner (3) according to claim 7.