WO2006009047A1

WO2006009047A1 - Air conditioner

Info

Publication number: WO2006009047A1
Application number: PCT/JP2005/012961
Authority: WO
Inventors: Zhiming Zheng; Hyunyoung Kim; Shun Yoshioka; Hirokazu Fujino
Original assignee: Daikin Industries, Ltd.
Priority date: 2004-07-16
Filing date: 2005-07-13
Publication date: 2006-01-26
Also published as: JP2006029702A; CN1989376A; AU2005264386A1; US20090114377A1; KR20070024705A; KR100840483B1; EP1775524A1

Abstract

A centrifugal fan is arranged in the casing so as to extend its axis of rotation along the depth direction of an air conditioner. A pair of heat exchangers are arranged on the right and left sides of the centrifugal fan so as to superimpose on the centrifugal fan when viewed from the direction perpendicularly intersecting the axis of rotation of the centrifugal fan. In other words, each heat exchanger is arranged symmetrically with respect to a vertical plane including the axis of rotation of the centrifugal fan. Accordingly, the centrifugal fan and the heat exchanger do not overlap in the depth direction of the air conditioner in the casing. Thus, the air conditioner can be made compact in the depth direction.

Description

Air conditioner

Technical field

[0001] The present invention relates to an air conditioner including a heat exchanger and a blower in a casing.

Background art

Conventionally, as this type of air conditioner, for example, an indoor unit of an air conditioner as described in Patent Document 1 (hereinafter referred to as “conventional air conditioner 1”) is known. In the conventional air conditioner 1, a heat exchanger is arranged in a box-shaped casing. The heat exchange is arranged opposite to the suction port formed on the front surface of the casing. A centrifugal blower is arranged in the casing. The centrifugal blower is located on the back side of the heat exchanger. According to the conventional air conditioner 1, first, the centrifugal blower is driven, and accordingly, air is sucked into the casing from the suction port. Then, after the temperature of the air is adjusted by passing through the heat exchanger, the air is blown out of the casing at the outlet force formed on the upper surface and the left and right surfaces of the casing.

[0003] In addition to the conventional air conditioner 1 that uses a centrifugal blower as a blower, as described in Patent Document 2, for example, an indoor unit for air conditioning that uses a cross-flow blower as a blower (hereinafter referred to as "conventional air conditioner 2"). Is also known.) In the conventional air conditioner 2, a cross flow blower is arranged at the upper part in a box-shaped casing. In the same casing, heat exchange is arranged below the crossflow fan. According to the conventional air conditioner 2, first, the cross flow blower is driven, and air is sucked into the suction grilling force casing formed in the upper front portion of the casing. Then, the air passes through the heat exchanger and is adjusted in temperature, and is then blown out of the blowing grill force casing formed in the lower front portion of the casing.

Patent Document 1: JP-A-10-122589

Patent Document 2: Japanese Patent Laid-Open No. 9-217942

Disclosure of the invention

[0004] By the way, recent air conditioners have a view that they want to reduce the installation space. In view of this, downsizing in the depth direction (thinning) is required. In particular, in the case where the air conditioner is a wall-mounted indoor unit installed on a wall surface in a room, there is a high demand for thinning in order to improve indoor interior characteristics. Furthermore, for wall-mounted indoor units, the installation space is limited on the wall surface of the room, so there is also a demand for compactness in the height direction.

[0005] In this regard, in the conventional air conditioner 1, the heat exchange and the centrifugal fan are arranged in the casing so as to overlap in the depth direction. For this reason, it was difficult to say that they were fully responding to the demand for compactness in the depth direction. In the conventional air conditioner 2, the heat exchange and the cross flow blower are arranged so as to overlap in the vertical direction in the casing. For this reason, it was difficult to say that it was sufficient to meet the demand for compactness in the height direction. In order to reduce the thickness and height of the conventional air conditioner 2, the fan diameter of the crossflow blower can be reduced. However, in this case, since the air volume is reduced and the performance of the air conditioner is reduced, it is not easy to appropriately respond to the demand for thinness and compactness in the height direction.

[0006] In view of the circumstances as described above, the present invention is an air conditioner in which a heat exchanger and a blower are arranged in a casing, and particularly in the depth direction without reducing the performance of the air conditioner. The purpose is to provide an air conditioner that can fully meet the demands of compactness.

[0007] In order to solve the above problems, according to a first aspect of the present invention, a centrifugal blower is provided in a casing provided with an air suction port and an air outlet, respectively, and the rotation axis of the centrifugal blower is provided. The heat exchanger is arranged along the depth direction of the casing, and the heat exchange is arranged side by side so as to at least partially overlap the centrifugal fan as viewed from the direction orthogonal to the rotational axis of the centrifugal fan.

[0008] With the configuration described above, the centrifugal blower and the heat exchange do not overlap in the casing depth direction in the casing, but overlap in the direction force perpendicular to the depth direction of the casing. For this reason, it is possible to suitably meet the demand for downsizing the air conditioner in the depth direction.

[0009] In the above air conditioner, a plurality of heat exchangers are arranged in the casing. The heat exchangers are preferably arranged at an angular interval of 180 degrees or 90 degrees when the rotation axis of the centrifugal blower is the center. In that case, heat exchange can be arranged at a plurality of positions on the air blowing side of the centrifugal blower, thereby improving the heat exchange efficiency satisfactorily.

[0010] In the above air conditioner, the heat exchangers arranged at an angular interval of 180 degrees when centered on the rotation axis of the centrifugal blower include a vertical plane or a horizontal plane including the rotation axis of the centrifugal blower. It is desirable to be arranged so as to be plane symmetric with respect to In that case, the air volume distribution of the air passing through each heat exchange and blown out of the casing can be made uniform.

[0011] In the above air conditioner, it is desirable that fins constituting at least one of the heat exchangers are stacked in a direction inclined with respect to the rotational axis of the centrifugal blower. In that case, a wide effective heat exchange area can be secured, and the heat exchange efficiency in the air conditioner can be improved satisfactorily.

[0012] In the above air conditioner, an air blowing passage communicating with the blowout port is provided on the back side of the heat exchanger when the centrifugal blower power is viewed in the casing, and the heat exchange of the air blowout passage is performed. It is desirable that a guide surface that can smoothly guide the air blown air blown out by the back force of the heat exchange toward the air outlet is provided on the inner surface facing the back of the air. In that case, the back force of heat exchange can be smoothly guided to the air outlet. Therefore, the pressure loss of the air blowing flow in the air blowing flow path can be reduced as much as possible.

[0013] In the air conditioner described above, the centrifugal blower is disposed so as to face a suction port provided on the front surface of the casing, and a force is applied to the inside of the casing between the suction port and the centrifugal blower. Therefore, it is desirable that an air guide that is reduced in diameter is provided. In that case, the suction loca can also smoothly flow air into the centrifugal fan through the air guide. Therefore, noise during air suction can be reduced.

[0014] In the above air conditioner, it is desirable that a suction port is provided on the front surface of the casing and a blower outlet is provided on the front surface of the casing. In that case, the air sucked in from the front of the casing is blown to the front of the casing. Is issued. Therefore, when installing an air conditioner, it can respond flexibly so that the air blowing direction from a blower outlet becomes suitable according to the surrounding environment where this air conditioner is installed.

[0015] In the air conditioner described above, the casing is installed in a state where the back surface of the casing faces the wall surface of the room, and the suction port and the air outlet are respectively provided on the front surface of the casing. It is desirable. In that case, the suction of the air into the casing and the blowing of the air out of the casing are the front suction and the front blowing. Therefore, an air conditioner that is a wall-mounted indoor unit can be installed near the ceiling of the room, and even if it is installed near the window glass, the air blown out from the outlet is exchanged by heat exchange with the window glass. Temperature changes can be avoided.

[0016] In the above air conditioner, it is desirable that the air inlet and the air outlet are provided on the front surface of the casing so that the air outlets are provided on both the left and right sides of the air inlet, respectively. Good. In that case, the air adjusted at each outlet force temperature provided on the left and right sides of the suction port is blown forward, so that the air can be blown over a wide range.

[0017] In the air conditioner described above, a plurality of suction ports are provided in the front surface of the casing, and a plurality of centrifugal fans are disposed in the casing so as to face the suction ports. Inside the casing, heat exchangers are arranged on both the left and right sides of the centrifugal blower. Between the back of each heat exchanger and each outlet, the air blowing flow blown from the back of each heat exchanger is directed to each outlet. It is desirable to provide an air outlet channel for guiding the air. In that case, the size of the air conditioner can be increased according to the size of the indoor space in which the air conditioner is installed.

[0018] As a result of the above, according to the air conditioner according to the present invention, the air conditioner in which the heat exchanger and the blower are arranged in the casing, without reducing the performance of the air conditioner. In particular, it can fully meet the demand for compactness in the depth direction.

Brief Description of Drawings

FIG. 1 is an external perspective view showing an installation state of an air conditioner according to the present embodiment.

FIG. 2 is a partially omitted perspective view showing the internal configuration of the air conditioner.

FIG. 3 is a plan sectional view of the air conditioner. [4] FIG. 4 is a partially omitted perspective view showing an internal configuration of another example of the air conditioner.

FIG. 5 is a partially omitted perspective view showing an internal configuration of another example of an air conditioner.

FIG. 6 is a partially omitted perspective view showing the internal configuration of another example of the air conditioner.

[FIG. 7] (a) and (b) are partially omitted perspective views showing the internal configuration of another example of the air conditioner.

FIG. 8 is a cross-sectional plan view of another example of an air conditioner.

FIG. 9 is an external perspective view showing an installation state of another example of the air conditioner.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an embodiment embodying an air conditioner of the present invention will be described with reference to FIGS.

As shown in FIG. 1, the air conditioner 10 of the present embodiment includes a horizontally long box-shaped casing 11. The air conditioner 10 is a wall-mounted thin indoor unit that is installed with the rear surface (rear surface) of the casing 11 facing an indoor wall surface, for example, a wall surface W near the ceiling. The casing 11 acts as a force with the casing body 12 opened at the front surface and the front panel 13 closing the front opening of the casing body 12. In the front panel 13, suction ports 14 are formed at two locations separated in the left-right direction. Each suction port 14 has a plurality of long flaps arranged in the height direction. In addition, air outlets 15 are formed on the inner side and the outer side of each suction port 14, respectively. Each air outlet 15 has a plurality of short flaps arranged in a row in the height direction. A pair of refrigerant pipes 16 are drawn out from the right side wall 12b of the casing body 12. A connecting unit 17 is attached to the drawing end of each refrigerant pipe 16.

Next, the configuration of the members arranged in the casing 11 will be described with reference to FIGS. 2 is a schematic perspective view in which the front panel 13 is removed from the casing 11 of the air conditioner 10 shown in FIG. 1, and the upper side wall 12a and the right side wall 12b of the casing body 12 are omitted. In FIG. 2, the piping state of the refrigerant piping 16 in the casing 11 and the drain are not shown. FIG. 3 is a cross-sectional plan view of the air conditioner 10 shown in FIG. 1 at an intermediate position in the height direction.

As shown in FIGS. 2 and 3, a plurality of centrifugal blowers 18 are arranged in the casing 11. Each centrifugal blower 18 is arranged on the rear surface of the casing 11 with its rotational axis P along the front-rear direction (that is, the depth direction of the casing 11). Each centrifugal blower 18 Is arranged opposite to each inlet 14. An air guide (bell mouth) 19 having an annular shape when viewed from the front is disposed between each suction port 14 and the centrifugal blower 18. Each air guide 19 is arranged coaxially with the corresponding centrifugal fan 18. Each air guide 19 is also reduced in diameter toward the rear surface of the front surface force of the casing 11. As shown in FIG. 3, the peripheral edge of the front opening of each air guide 19 is supported with the back force of the suction port 14 fitted into the front panel 13. Accordingly, each air guide 19 is fixed to the casing 11. For each air guide 19, the rear peripheral edge formed with a smaller diameter than the front peripheral edge extends to the vicinity of the front end of the centrifugal blower 18. Each air guide 19 smoothly guides the air flowing into the casing 11 from the suction port 14 toward the centrifugal blower 18.

The centrifugal blower 18 includes a blade portion 22 and a motor 23 for driving the blade portion 22. The blade portion 22 includes a hub 20 having a substantially disk shape and a large number of blades 21. Each wing 21 protrudes forward from the front surface of the outer periphery of the hub 20. The outer shape of the blade 22 viewed from the front is substantially the same as the opening on the rear peripheral edge of the air guide 19 and has substantially the same size. In each centrifugal blower 18, a motor 23 is fixed to the rear side wall surface of the casing 11, and a support shaft 23a projects from the motor 23 toward the front. A blade portion 22 of each centrifugal blower 18 is supported around the rotation axis P so as to rotate at the tip end portion of the support shaft 23a. In the centrifugal blower 18, centrifugal force is generated based on the rotation of the blade portion 22. Then, air is blown out from the centrifugal blower 18 toward the centrifugal direction (radial direction) by the centrifugal force.

In addition, a pair of heat exchangers 24 are disposed on the left and right sides of the centrifugal blower 18 in the casing 11 (casing body 12). Each heat exchanger 24 is formed by stacking a plurality of fins 24a. In the present embodiment, the stacking direction of the fins 24a is parallel to the vertical plane including the rotation axis P of the centrifugal blower 18. Further, the center positions of the heat exchangers 24 are arranged with an angular interval of 180 degrees when the rotational axis P of the centrifugal fan 18 is the center. The heat exchangers 24 paired on the left and right sides are arranged so as to be symmetric with respect to a vertical plane including the rotation axis P of the centrifugal blower 18. The heat exchangers are arranged side by side so as to partially overlap the centrifugal blower 18 in view of the directional force orthogonal to the rotational axis P of the centrifugal blower 18. In this embodiment, the depth dimension of the centrifugal blower 18 is the heat It is set to be almost the same as the depth of 24.

In the casing 11, a guide block 25 is disposed in the direction of the back surface of the heat exchanger 24 when viewed from the centrifugal blower 18. The guide block 25 has a guide surface 25 a having a circular arc cross section, and the guide surface 25 a faces the heat exchanger 24. An air outlet channel 26 communicating with the outlet 15 is formed between the guide block 25 and the heat exchanger 24. Therefore, the air blown out in the radial direction from the centrifugal blower 18 passes between the fins 24a of the heat exchanger 24 and flows into the air blowing passage 26, and then along the guide surface 25a of the guide block 25. Smooth guidance to outlet 15

Next, the operation of the air conditioner 10 of the present embodiment will be described below.

When the motor 23 is driven and the blade 22 of the centrifugal blower 18 is rotated, air is directed to the centrifugal blower 18 from each suction port 14 on the front surface of the casing 11 as shown by an arrow A in FIG. Then sucked. At that time, a large volume of air is sucked from each suction port 14, and the air smoothly flows into the centrifugal blower 18 along the inner surface of the air guide 19. Then, the air flowing into the centrifugal fan 18 is blown out in the radial direction as indicated by an arrow a in FIG.

[0027] The air blown from the centrifugal blower 18 passes between the fins 24a of the heat exchangers 24 arranged on the left and right sides of the centrifugal blower 18. At that time, the air is heat-exchanged with the refrigerant flowing in the heat exchanger 24 via the refrigerant pipe 16, thereby adjusting the temperature (heating or cooling). Here, the heat exchangers 24 are arranged so as to be plane-symmetric with respect to a vertical plane including the rotation axis P of the centrifugal fan 18. Therefore, the air volume distribution of the air that passes through each heat exchanger and blows back force is almost uniform.

Thereafter, the air from which the back force of each heat exchange is also blown flows into the air blowing flow path 26 between each heat exchange and the guide block 25. The air flowing into the air outlet channel 26 is smoothly guided to the outlet 15 along the guide surface 25a of the guide block 25 as shown by the arrow b in FIG. Therefore, the pressure loss of the air blowing flow in the air blowing flow path 26 is suitably reduced.

Then, the air guided through the air outlet channel 26 to the outlet 15 is blown out of the casing 11 from the outlet 15. That is, in the air conditioner 10 of the present embodiment, the casing After the indoor air is sucked in from the front of 11 and the temperature is adjusted, the front force air of casing 11 is blown into the room. At that time, the air is blown out of the casing 11 from the air outlets 15 on the left and right sides of the air inlet 14 as indicated by an arrow B in FIG. Thereby, the temperature-controlled air is blown out over a wide range.

[0030] When the air conditioner 10 is installed in the room, the back surface of the casing 11 is fixed to the wall surface W in the room as shown in FIGS. In the air conditioner 10 of the present embodiment, the centrifugal blower 18 and the heat exchanger 24 are not adjacent to each other in the depth of the air conditioner 10, that is, the front-rear direction force, and are disposed adjacent to each other in the casing 11. . Further, even if the centrifugal fan 18 and the heat exchanger 24 overlap each other in the casing 11 in the vertical direction! Therefore, the size of the air conditioner 10 in the front-rear direction and the height direction is compact. Therefore, for example, the wall near the ceiling can be installed with less protrusion to the indoor side, so that the interior quality of the room is not impaired.

[0031] According to the air conditioner 10 of the above embodiment, the following effects can be obtained.

(1) In the casing 11, the centrifugal blower 18 and the heat exchanger 24 are not overlapped in the front-rear direction of the casing 11 (the depth direction of the air conditioner 10), and the rotational axis P of the centrifugal blower 18 and It overlaps as seen from the orthogonal direction. Therefore, it is possible to favorably achieve a compactness in the depth direction of the air conditioner 10 that is required to improve the interior quality of the room. In addition, since it is not necessary to reduce the size of the centrifugal blower 18 when adopting the arrangement, a sufficient air volume can be secured, and the performance of the air conditioner 10 is not deteriorated.

(2) In the casing 11, heat exchange is arranged on both the left and right sides (multiple positions) where air is blown out from the centrifugal blower 18. Therefore, the air blown in the radial direction from the centrifugal blower 18 can be heat-exchanged by each heat exchange, and the heat exchange efficiency can be improved.

(3) —A pair of heat exchangers 24 are arranged on both sides of one centrifugal blower 18. Each heat exchanger 24 is arranged so as to be plane-symmetric with respect to a vertical plane including the rotation axis P of the centrifugal blower 18. Therefore, the air volume distribution of the air blown out from each outlet 15 can be made uniform after passing through each heat exchange and adjusting the temperature. (4) Further, the air blown from the back surface of the heat exchange and flowing into the air blowing flow path 26 is smoothly guided to the blowout port 15 along the guide surface 25a of the guide block 25. Therefore, the pressure loss of the air blowing flow can be reduced as much as possible in the air blowing flow path 26.

[0035] (5)-On the other hand, the air sucked into the centrifugal blower 18 in the casing 11 from the suction port 14 is brought into the centrifugal blower 18 by the air guide 19 disposed between the centrifugal blower 18 and the suction port 14. And can flow smoothly. Therefore, noise generated when air is sucked into the casing 11 from the suction port 14 can be suitably reduced.

(6) Further, in this embodiment, after the temperature of the air sucked from the suction port 14 formed on the front surface of the casing 11 is adjusted, the air is formed on the front surface of the casing 11 similarly to the suction port 14. The air is blown forward from the air outlet 15. For this reason, in the case of a wall-mounted air conditioner 10 that is installed with the back surface of the casing 11 in contact with the wall surface W of the room, the air conditioner is considered while taking the air blowing direction into the surrounding environment such as the curtain rail and ceiling surface. Ten flexible installations can be made possible.

[0037] (7) Moreover, if a configuration in which air is sucked in from the front and blown out from the front as in the air conditioner 10 of the present embodiment is adopted, the wall-mounted air conditioner 10 is placed above the wall surface W of the room (ceiling). Even if it is installed in the vicinity), there are no restrictions on air suction and blowing. Further, even when such a wall-mounted air conditioner 10 is installed in the vicinity of the window glass, for example, the air blowing direction does not follow the surface of the window glass. Therefore, it is possible to avoid that the air blown out after the temperature adjustment is exchanged with the window glass, thereby changing the temperature of the air.

(8) Then, a pair of air outlets 15 are formed on both sides of the single air inlet 14, and air whose temperature is adjusted is blown out from each air outlet 15. Therefore, the air whose temperature is adjusted on the front surface of the casing 11 can be blown over a wide range in the room.

[0039] (9) Further, in the present embodiment, the casing 11 is provided with a plurality of air conditioning units (two on the left and right in the present embodiment) having equal power, such as the centrifugal blower 18, the heat exchanger 24, and the guide block 25. . The air sucked from the air inlet 14 of each air conditioning unit is adjusted in temperature and then blown out from the air outlet 15 of each air conditioning unit. Air conditioner 1 If the number of air conditioning units is changed according to the environment in which 0 is installed (the size of the indoor space), appropriate air conditioning performance corresponding to the installation environment can be provided.

[0040] The above embodiment may be modified as follows.

• As shown in FIG. 4, heat exchangers 24 may be arranged on the upper and lower sides of the centrifugal fan 18 in the casing 11. That is, for each centrifugal blower 18, a pair of heat exchangers 24 are arranged on both the upper and lower sides, a guide block 25 is arranged on the back side of each heat exchanger 24, and the air is placed between the heat exchanger 24 and the guide block 25. The blowout flow path 26 may be formed. In this case, in each heat exchange 24, the stacking direction of the fins 24a is arranged in parallel with the horizontal plane including the rotation axis P of the centrifugal blower 18, and the heat exchangers 24 paired up and down are plane-symmetric with respect to the horizontal plane. It arrange | positions so that it may become. Note that the position of the air outlet 15 formed on the front surface of the casing 11 is also changed as the position of the air outlet channel 26 is changed. Hereinafter, such a change in the position of the air outlet 15 is also the same for each air conditioner 10 shown in FIGS. In the case of the modification shown in FIG. 4, it is desirable to dispose a partition member 27 between the left and right air conditioning units. Even if this arrangement is adopted, each heat exchanger 24 overlaps with the centrifugal blower 18 when viewed from the direction orthogonal to the rotation axis P, so that the same effect as in the above embodiment can be obtained.

[0041] As shown in FIG. 5, in the casing 11, two heat exchangers 24 may be arranged at an angular interval of 90 degrees around the rotation axis P of the centrifugal blower 18. That is, two heat exchangers 24 are arranged in an L shape by arranging each centrifugal blower 18 on either the upper side or the left and right, and a guide block 25 is arranged behind each heat exchanger 24. Then, an air outlet channel 26 may be formed between the heat exchanger 24 and the guide block 25. Also in this case, it is desirable to arrange the partition member 27 between the left and right air conditioning units. Even if this arrangement is adopted, each heat exchanger 24 overlaps with the centrifugal blower 18 when viewed from the direction orthogonal to the rotation axis P, so that the same effect as in the above embodiment can be obtained.

[0042] · As shown in FIG. 6, in the casing 11, two heat exchangers 24 are arranged at an angular interval of 180 degrees around the rotation axis P of the centrifugal fan 18, and one heat exchanger 24 is Thus, one heat exchanger 24 may be arranged at an angular interval of 90 degrees. In other words, the three heat exchangers 24 are arranged by arranging the centrifugal fan 18 on the upper side and the left and right sides respectively. It may be arranged in a U shape. Even if this arrangement is adopted, each heat exchanger 24 overlaps with the centrifugal blower 18 when viewed from the direction orthogonal to the rotational axis P, so that the same effect as in the above embodiment can be obtained.

[0043] * As shown in FIG. 7 (&) (b), in the casing 11, the centrifugal blower 18, the heat exchanger 24, and the air-conditioning unit having equal force of the guide block 25 are arranged continuously up and down. Well ... Incidentally, the air conditioner 10 shown in FIG. 7 (a) is arranged by rotating the air conditioner 10 shown in FIG. 4 by 90 degrees, and the air conditioner 10 shown in FIG. The air conditioner 10 of the present embodiment shown in FIG. 2 is rotated 90 degrees and arranged. Even if these arrangements are adopted, each heat exchanger 24 overlaps with the centrifugal blower 18 when viewed from the direction orthogonal to the rotation axis P, so that the same effect as in the above embodiment can be obtained.

[0044] In the embodiment shown in Figs. 1 to 3 and the air conditioners 10 of the different examples shown in Figs. The orientation may be changed diagonally as shown in Fig. 8. That is, the heat exchangers 24 may be arranged so that the stacking direction of the fins 24a of the heat exchanger 24 obliquely intersects with a vertical plane (or horizontal plane) including the rotation axis P. In other words, the heat exchangers 24 may be arranged such that the fins 24a constituting the heat exchanger 25 are stacked in a direction inclined with respect to the rotation axis P of the centrifugal blower 18. In this case, the effective heat exchange area for heat exchange that receives the air blown out from the centrifugal blower 18 can be increased, and the heat exchange efficiency of the air conditioner 10 can be improved.

[0045] · As shown in FIG. 9, the suction port 14 formed on the front surface (front panel 13) of the casing 11 is covered with a plurality of opening / closing panels 13a (two in each suction port 14 in FIG. 9). It is good. Of course, it is good also as a structure covered with one large opening-and-closing panel for every suction inlet 14. FIG. Also in this case, the suction port 14 appears on the front surface of the casing 11 due to the opening operation in which the open / close panel 13a is swung forward with the lower end edge as a fulcrum. The same effect as the air conditioner 10 with front suction and front blowing can be obtained.

[0046] In the embodiment and each of the other examples, the air outlets 15 are formed on the front surface of the casing 11 together with the air inlets 14. However, depending on the environmental conditions (such as the indoor environment) in which the air conditioner 10 is installed. The air outlets 15 may be formed on the upper surface, the lower surface, and the left and right side surfaces of the casing 11. [0047] The air guide 19 disposed between the suction port 14 and the centrifugal blower 18 may be omitted. • The guide surface 25a that guides the air that has flowed into the air outlet channel 26 to the outlet 15 may be inclined, or the guide block 25 may be omitted and the guide surface 25a formed on the inner surface of the casing 11. .

[0048] In the case 11, for example, in the case of FIG. 8, at least one of the heat exchangers may be arranged obliquely in the plurality of heat exchangers 24 arranged on both sides of the centrifugal blower 18 in the casing 11.

[0049] In the present embodiment and each of the other examples, it is embodied in a wall-mounted air conditioner indoor unit installed on the wall surface W in the room, but is not limited to a wall-mounted air conditioner. Further, it may be embodied in an outdoor unit.

Claims

The scope of the claims

[1] A centrifugal blower is disposed in a casing provided with an air inlet and an outlet, respectively, such that the rotational axis of the centrifugal fan is along the depth direction of the casing, and the heat exchanger is disposed in the centrifugal direction. An air conditioner arranged side by side so as to at least partially overlap the centrifugal blower when viewed from a direction orthogonal to the rotation axis of the blower.

[2] A plurality of heat exchangers are arranged in the casing, and the heat exchangers are arranged at an angular interval of 180 degrees or 90 degrees when the rotation axis of the centrifugal blower is centered. The air conditioner according to claim 1.

[3] The heat exchangers arranged with an angular interval of 180 degrees centered on the rotational axis of the centrifugal fan are symmetrical with respect to a vertical plane or a horizontal plane including the rotational axis of the centrifugal fan. The air conditioner according to claim 2, wherein the air conditioner is arranged to be

[4] The air conditioner according to claim 2, wherein fins constituting at least one heat exchange shelf among the heat exchange shelves are stacked in a direction inclined with respect to a rotation axis of the centrifugal fan. .

[5] In the casing, an air outlet passage communicating with the outlet is provided on the back side of the heat exchanger when the centrifugal blower force is viewed, and the rear side of the heat exchanger of the air outlet passage is provided with the air outlet passage. The guide surface which can guide smoothly the air blowing flow blown out from the back surface of the said heat exchanger toward the said blower outlet is provided in the inner surface which opposes. Air conditioner as described in.

[6] The centrifugal blower is disposed so as to face the suction port provided on the front surface of the casing, and is compressed between the suction port and the centrifugal blower toward the inside of the casing. The air conditioner according to any one of claims 1 to 5, wherein an air guide having a diameter is provided.

[7] The air conditioner according to any one of claims 1 to 6, wherein in the casing, the suction port is provided in a front surface of the casing, and the air outlet is provided in a front surface of the casing. Machine.

[8] The casing is installed in a state where the back surface of the casing is opposed to the wall surface of the room, and the suction port and the air outlet are respectively provided on the front surface of the casing. The air conditioner according to any one of claims 1 to 7, wherein:

[9] The air according to claim 8, wherein the air inlet and the air outlet are provided so that the air outlets are respectively placed on left and right sides of the air inlet on the front surface of the casing. Harmony machine.

[10] The front surface of the casing is provided with a plurality of suction ports, and a plurality of centrifugal fans are disposed in the casing so as to face the suction ports, and both left and right sides of the centrifugal fan are disposed in the casing. The heat exchangers are respectively arranged in order to guide the air blown air blown from the back of each heat exchanger toward each of the air outlets between the back of each heat exchanger and each of the air outlets. The air conditioner according to claim 9, wherein an air blowing channel is provided.