CN1989376A - Air conditioner - Google Patents

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

The present invention relates to an air conditioner provided with a heat exchanger and a blower in a casing.

Background technique

Conventionally, as such an air conditioner, for example, an indoor unit of an air conditioner 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 disposed in a box-shaped casing. The heat exchanger is arranged to face the suction port formed on the front surface of the casing. In addition, a centrifugal blower is arranged in the casing. The centrifugal blower is arranged on the rear side of the heat exchanger. According to the conventional air conditioner 1, firstly, the centrifugal blower is driven, and air is sucked into the housing through the suction port. Furthermore, the temperature of this air is adjusted by a heat exchanger, and then it is blown out of the casing from outlets formed on the upper surface and the left and right surfaces of the casing.

In addition, there is also known an air-conditioning indoor unit using a cross-flow blower as a blower as described in Patent Document 2 (hereinafter referred to as "conventional air conditioner"), which is different from the conventional air conditioner 1 in which a centrifugal blower is used as a blower. Machine 2"). In the conventional air conditioner 2 , a cross-flow blower is disposed on an upper portion inside a box-shaped casing. In addition, a heat exchanger is disposed below the cross-flow blower in the casing. According to the conventional air conditioner 2, firstly, the cross-flow blower is driven, and air is sucked into the casing through the intake grill formed at the front upper portion of the casing. Furthermore, the temperature of this air is adjusted by a heat exchanger, and then it is blown out of the casing from an outlet grill formed at the front lower portion of the casing.

Patent Document 1: Japanese Patent Application Laid-Open No. 10-122589

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

However, in recent air conditioners, from the viewpoint of reducing the installation space, compactness (thinning) in the depth direction is required. In particular, when the air conditioner is a wall-mounted indoor unit installed on a wall surface of the room, there is a high demand for thinning in order to improve the decorativeness of the room. In addition, since the installation space of the wall-mounted indoor unit is limited on the wall surface of the room, it is also required to be compact in the height direction.

In this regard, in the conventional air conditioner 1 , the heat exchanger and the centrifugal blower are arranged so as to overlap each other in the depth direction in the casing. Therefore, it is difficult to say that the demand for compactness in the depth direction can be fully satisfied. In addition, in the conventional air conditioner 2, the heat exchanger and the cross-flow blower are arranged so as to overlap each other in the vertical direction in the casing. Therefore, it is difficult to say that the demand for compactness in the height direction can be fully satisfied. In addition, in the conventional air conditioner 2 , in order to achieve thinning and compactness in the height direction, it is also considered to reduce the fan diameter of the cross-flow blower. However, in this case, the air volume decreases and the performance of the air conditioner decreases, so it is not easy to appropriately respond to the demands for thinning and compacting in the height direction.

Contents of the invention

The present invention is proposed in view of the above circumstances, and its object is to provide an air conditioner that does not degrade the performance of the air conditioner, and can fully satisfy the requirements in the depth direction, for an air conditioner equipped with a heat exchanger and a blower in a casing. Air conditioner of request for compactness.

In order to solve the above-mentioned problems, according to the first aspect of the present invention, the centrifugal blower is disposed in the casing respectively provided with the air suction port and the air blowout port so that the rotation axis of the centrifugal blower is along the depth direction of the casing, and the heat The exchangers are arranged in parallel so as to overlap at least a portion of the centrifugal blower when viewed from a direction perpendicular to the rotation axis of the centrifugal blower.

According to the above configuration, in the casing, the centrifugal blower and the heat exchanger do not overlap each other in the depth direction of the casing, but overlap each other when viewed from a direction perpendicular to the depth direction of the casing. Therefore, the demand for compactness in the depth direction of the air conditioner can be better satisfied.

In the above-mentioned air conditioner, it is preferable that a plurality of heat exchangers are arranged in the casing, and when the rotation axis of the centrifugal blower is the center, each heat exchanger is separated from each other at an angular interval of 180 degrees or 90 degrees. configuration. In this case, heat exchangers can be arranged at multiple positions on the air blowing side of the centrifugal blower, whereby the heat exchange efficiency can be further improved.

In the above-mentioned air conditioner, it is preferable that the heat exchangers arranged at an angular interval of 180 degrees around the rotation axis of the centrifugal blower are arranged so that a vertical plane or a horizontal plane including the rotation axis of the centrifugal blower is The datum becomes plane symmetric. In this case, the air volume distribution of the air blown out of the casing from the air outlet after passing through each heat exchanger can be made uniform.

In the above air conditioner, it is preferable that the fins constituting at least one of the heat exchangers are stacked in a direction inclined with respect to the rotation axis of the centrifugal blower. In this case, a large effective heat exchange area can be ensured, and the heat exchange efficiency of the air conditioner can be better improved.

In the above-mentioned air conditioner, it is preferable that an air blowing flow path communicated with the air outlet is provided on the back side of the heat exchanger when viewed from the centrifugal blower in the housing, and that the air blowing flow path and the heat exchanger On the inner surface facing the back, there is provided a guide surface that can smoothly guide the air blown out from the back of the heat exchanger toward the outlet. In this case, the air blown out from the back surface of the heat exchanger 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.

In the above-mentioned air conditioner, it is preferable that the centrifugal blower is disposed so as to face the suction inlet provided on the front surface of the casing, and that an air guide whose diameter is reduced toward the inside of the casing is arranged between the suction inlet and the centrifugal blower. pieces. In this case, air can be smoothly flowed into the centrifugal blower from the suction port through the air guide. Therefore, noise at the time of air suction can be reduced.

In the above-mentioned air conditioner, it is preferable that, in the housing, the suction port is provided on the front surface of the housing, and the air outlet is provided on the front surface of the housing. In this case, the air sucked in from the front of the housing is blown out from the front of the housing. Therefore, when an air conditioner is installed, it can respond flexibly according to the surrounding environment in which the air conditioner is installed so that the air blowing direction from the air outlet can be more suitable.

In the above-mentioned air conditioner, it is preferable that the casing is installed in a state where its back surface faces the interior wall, and that the suction port and the blowing port are respectively provided on the front surface of the casing. In this case, sucking air into the case and blowing air out of the case becomes front suction/front blowing. Therefore, the air conditioner as a wall-mounted indoor unit can be installed near the indoor ceiling. In addition, even if it is installed near the window glass, the temperature change of the air blown out from the air outlet due to heat exchange with the window glass can be avoided.

In the above-mentioned air conditioner, it is preferable that the suction port and the blowing port are provided on the front surface of the housing so that the blowing ports are respectively located on the left and right sides of the suction port. In this case, since the temperature-regulated air is blown forward from the air outlets provided on the left and right sides of the suction port, the air can be blown out over a wide range.

In the above-mentioned air conditioner, it is preferable that a plurality of suction ports are provided on the front surface of the housing, and that a plurality of centrifugal blowers are arranged in the housing so as to face each suction port, and at the same time, in the housing, centrifugal Heat exchangers are arranged on the left and right sides of the air blower, and between the back surfaces of the heat exchangers and the air outlets, air blowers for guiding the air blown out from the back surfaces of the heat exchangers toward the air outlets are provided. Blow out the flow path. In this case, the size of the air conditioner can be increased according to the size of the indoor space where the air conditioner is installed.

As can be seen from the above results, according to the air conditioner of the present invention, for an air conditioner equipped with a heat exchanger and a blower in the casing, the performance of the air conditioner will not be reduced, and in particular, it can fully meet the requirements of compactness in the depth direction. requirements of customization.

Description of drawings

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

Fig. 2 is a partially omitted perspective view showing an internal structure of the air conditioner.

Fig. 3 is a top sectional view of the air conditioner.

Fig. 4 is a partially omitted perspective view showing an internal structure of an air conditioner of another example.

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

Fig. 6 is a partially omitted perspective view showing an internal structure of an air conditioner of another example.

Fig.7 (a), (b) is the perspective view which shows the internal structure of the air conditioner of another example with a part omitted.

Fig. 8 is a top sectional view of an air conditioner of another example.

Fig. 9 is an external perspective view showing an installed state of an air conditioner of another example.

Detailed ways

Next, one Embodiment which actualized the air conditioner of this invention is demonstrated based on FIGS. 1-3.

As shown in FIG. 1 , the air conditioner 10 of the present embodiment includes a horizontally elongated box-shaped casing 11 . The air conditioner 10 is a wall-mounted thin indoor unit provided so that the back surface (rear surface) of the housing 11 faces an indoor wall surface, for example, a wall surface W near a ceiling. The housing 11 is constituted by a housing body 12 opened at the front and a front panel 13 closing the front opening of the housing body 12 . On the front panel 13 , suction ports 14 are respectively formed at two locations away from each other in the left-right direction. Each suction port 14 is configured by arranging a plurality of long baffles in parallel in the height direction. In addition, outlets 15 are formed on the inside and outside of each suction port 14 . Each outlet 15 is configured by arranging a plurality of short baffles in parallel in the height direction. In addition, a pair of refrigerant pipes 16 are led out from the right side wall 12 b of the housing body 12 . A connection unit 17 is attached to the lead-out end of each refrigerant pipe 16 .

Next, the structure of the components arranged in the housing 11 will be described with reference to FIGS. 2 and 3 . 2 is a schematic perspective view in which the front panel 13 is removed from the housing 11 of the air conditioner 10 shown in FIG. 1 and the upper side wall 12a and the right side wall 12b of the housing body 12 are omitted. In FIG. 2 , illustration of the arrangement state of the refrigerant piping 16 in the casing 11 and a drain pipe (drain) are omitted. In addition, FIG. 3 is a top cross-sectional view of an intermediate position in the height direction of the air conditioner 10 shown in FIG. 1 .

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 so that the rotation axis P thereof is along the front-rear direction (that is, the depth direction of the casing 11 ). In addition, each centrifugal blower 18 is arranged to face each suction port 14 . And between each suction port 14 and the centrifugal blower 18, the air guide (horn mouth) 19 which is annular in front view is arrange|positioned. Each air guide 19 is arranged on the same axis as the corresponding centrifugal blower 18 . Each air guide 19 decreases in diameter from the front of the housing 11 toward the rear. As shown in FIG. 3 , the periphery of the front opening of each air guide 19 is fitted into and supported by the front panel 13 from the back surface of the suction port 14 . Accordingly, each air guide 19 is fixed relative to the casing 11 . In addition, in each air guide 19 , the rear peripheral edge formed to have 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 is composed of a hub 20 and a plurality of blades 21 formed in a substantially disk shape. Each blade 21 protrudes forward from the front surface of the outer peripheral portion of the hub 20 . The outer shape of the vane portion 22 viewed from the front is substantially the same as the opening of 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 wall surface of the casing 11 , and a support shaft 23 a protrudes forward from the motor 23 . The blade part 22 of each centrifugal blower 18 is supported by the front-end|tip part of the support shaft 23a, and is rotatable about the rotation axis P thereof. In each centrifugal blower 18 , centrifugal force is generated based on the rotation of the blade portion 22 . Furthermore, air is blown out from the centrifugal blower 18 in the centrifugal direction (radial direction) by this centrifugal force.

In addition, a pair of heat exchangers 24 are arranged on both left and right sides of the centrifugal blower 18 in the casing 11 (casing main body 12 ). Each heat exchanger 24 is formed by laminating a plurality of fins (fin) 24a. In the present embodiment, the lamination direction of each fin 24 a is a direction parallel to a vertical plane including the rotation axis P of the centrifugal blower 18 . In addition, each heat exchanger 24 is arrange|positioned at the angular interval of 180 degree|times when the central position centered on the rotation axis P of the centrifugal blower 18. As shown in FIG. Then, the left and right paired heat exchangers 24 are arranged symmetrically with respect to a vertical plane including the rotation axis P of the centrifugal blower 18 . The respective heat exchangers 24 are arranged in parallel so as to partially overlap the centrifugal blower 18 when viewed from a direction perpendicular to the rotation axis P of the centrifugal blower 18 . In this embodiment, the depth dimension of the centrifugal blower 18 is set substantially the same as the depth dimension of the heat exchanger 24 .

In addition, inside the casing 11 , a guide block 25 is arranged in the direction of the back side of the heat exchanger 24 when viewed from the centrifugal blower 18 . The guide block 25 has a guide surface 25 a having an arc-shaped cross section, and the guide surface 25 a faces the heat exchanger 24 . Then, between each guide block 25 and the heat exchanger 24 , an air blowing flow path 26 communicating with the blowing port 15 is formed. Therefore, the air blown out in the radial direction from the centrifugal blower 18 passes between the fins 24a of the heat exchanger 24, flows into the air blowing flow path 26, and is smoothly blown toward the air along the guide surface 25a of the guide block 25. Exit 15 to boot.

Next, the action of the air conditioner 10 of this embodiment is demonstrated below.

When the motor 23 is driven to rotate the blades 22 of the centrifugal blower 18, air is sucked into the centrifugal blower 18 from the suction ports 14 on the front surface of the casing 11 as shown by arrow A in FIG. 3 . At this time, a large volume of air is sucked in from each suction port 14 , and the air smoothly flows into the centrifugal blower 18 along the inner surface of the air guide 19 . Furthermore, the air flowing into the centrifugal blower 18 is blown out in the radial direction as indicated by arrow a in FIG. 3 .

The air blown out from the centrifugal blower 18 passes between the respective fins 24 a of the respective heat exchangers 24 arranged on the left and right sides of the centrifugal blower 18 . At this time, the air passes through the refrigerant pipe 16 and exchanges heat with the refrigerant flowing in the heat exchanger 24, thereby performing temperature adjustment (heating or cooling). Here, the respective heat exchangers 24 are arranged symmetrically 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 the rear surfaces of the heat exchangers 24 becomes substantially equal to the left and right.

Thereafter, the air blown out from the back surface of the heat exchangers 24 flows into the air blowing passage 26 between each heat exchanger 24 and the guide block 25 . The air flowing into the air blowing flow path 26 is smoothly guided to the air outlet 15 along the guide surface 25 a of the guide block 25 as shown by the arrow b in FIG. 3 . Therefore, the pressure loss of the air blowing flow in the air blowing flow path 26 can be appropriately reduced.

Then, the air guided to the air outlet 15 in the air blowing flow path 26 is blown out of the casing 11 from the air outlet 15 . That is, in the air conditioner 10 of the present embodiment, room air is sucked in from the front surface of the housing 11 and its temperature is adjusted, and then the air is blown out into the room from the front surface of the housing 11 . At this time, air is blown out of the housing 11 from the air outlets 15 on the left and right sides of the suction port 14 as indicated by arrow B in FIG. 3 . Thereby, the temperature-adjusted air is blown out over a wide range.

Moreover, when installing the air conditioner 10 indoors, as shown in FIGS. 1 and 3 , the air conditioner 10 is fixed to the indoor wall surface W by using the back surface of the casing 11 . In the air conditioner 10 of this embodiment, the centrifugal blower 18 and the heat exchanger 24 are arranged adjacent to each other without overlapping each other when viewed from the depth direction of the air conditioner 10 , that is, the front-rear direction, inside the casing 11 . In addition, the centrifugal blower 18 and the heat exchanger 24 do not overlap each other in the vertical direction in the casing 11 . Therefore, the dimension of the front-back direction and the height direction of the air conditioner 10 becomes compact. Therefore, even with respect to the wall surface in the vicinity of the ceiling, for example, it can be installed with a reduced amount of projection toward the interior side, thereby not impairing the decorativeness of the interior.

According to the air conditioner 10 of the said embodiment, the following effects can be acquired.

(1) In the casing 11, the centrifugal blower 18 and the heat exchanger 24 do not overlap each other in the front-back direction of the casing 11 (the depth direction of the air conditioner 10), but are perpendicular to the rotation axis P of the centrifugal blower 18. overlap each other when viewed in the same direction. Therefore, the compactness in the depth direction of the air conditioner 10 required to improve the interior decoration property can be realized better. Moreover, since it is not necessary to downsize the centrifugal blower 18 when this arrangement is adopted, a sufficient air volume can be ensured, and the performance of the air conditioner 10 will not be lowered.

(2) In the housing 11 , the heat exchangers 24 are respectively arranged on the left and right sides (a plurality of positions) where air is blown from the centrifugal blower 18 . Therefore, the air blown in the radial direction from the centrifugal blower 18 can be heat-exchanged by the heat exchanger 24, 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 . In addition, each heat exchanger 24 is arrange|positioned so that it may become plane symmetry with respect to the vertical plane containing the rotation axis P of the centrifugal blower 18. As shown in FIG. Therefore, after temperature adjustment by the heat exchanger 24, the volume distribution of the air blown out from each outlet 15 can be made uniform.

(4) Furthermore, the air blown out from the back surface of the heat exchanger 24 and flowed into the air blowing flow path 26 is smoothly guided to the air outlet 15 along the guide surface 25 a 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 .

(5) On the other hand, the air sucked into the centrifugal blower 18 in the casing 11 from the suction port 14 can pass through the air guide 19 arranged between the centrifugal blower 18 and the suction port 14, and flow smoothly into the centrifugal blower 18. inflow. Therefore, the noise generated when the air is sucked into the casing 11 from the suction port 14 can be better reduced.

(6) In addition, in this embodiment, after the air sucked in from the suction port 14 formed on the front surface of the housing 11 has been temperature-regulated, it flows forward from the air outlet 15 formed on the front surface of the housing 11 similarly to the suction port 14 . blow out. Therefore, in the case of the wall-mounted air conditioner 10 installed so that the back of the casing 11 is in contact with the indoor wall surface W, it can be flexibly installed while considering the blowing direction of the air according to the surrounding environment such as a curtain rail or a ceiling surface. Air conditioner 10.

(7) Furthermore, if the air conditioner 10 of the present embodiment has a structure in which the air is sucked in from the front and the air is blown out from the front, even if the wall-mounted air conditioner 10 is installed on the upper part of the wall W (near the ceiling) in the room, There is also no restriction on the suction and blowing of air. In addition, even if such a wall-mounted air conditioner 10 is installed near a window glass, for example, the direction in which air is blown out does not follow the surface of the window glass. Therefore, it is possible to avoid the temperature change of the air caused by heat exchange between the temperature-adjusted air blown out and the window glass.

(8) Furthermore, a pair of air outlets 15 are formed on both sides of one air inlet 14 , and temperature-regulated air is blown out from the air outlets 15 , respectively. Therefore, the temperature-regulated air can be blown out from the front of the casing 11 over a wide range of the room.

(9) In addition, in this embodiment, there are a plurality of air-conditioning units (in this embodiment, two on the left and right) in the casing 11, and the air-conditioning units are composed of a centrifugal blower 18, a heat exchanger 24, and a guide block. 25 and so on. In addition, air sucked in from the air inlet 14 of each air conditioning unit is blown out from the air outlet 15 of each air conditioning unit after being temperature-regulated. Therefore, if the number of air-conditioning units is changed according to the environment in which the air conditioner 10 is installed (the size of the indoor space), suitable air-conditioning performance corresponding to the above-mentioned installation environment can be provided.

In addition, the above-mentioned embodiment can also be changed as follows.

As shown in FIG. 4 , heat exchangers 24 may be disposed on both upper and lower sides of centrifugal blower 18 in casing 11 . That is, for each centrifugal blower 18, a pair of heat exchangers 24 may be disposed on the upper and lower sides thereof, guide blocks 25 may be disposed on the back side of each heat exchanger 24, and a heat exchanger 24 may be formed between the heat exchangers 24 and the guide blocks 25. Air is blown out of the flow path 26 . In this case, in each heat exchanger 24, the stacking direction of the fins 24a is arranged parallel to the horizontal plane including the rotation axis P of the centrifugal blower 18, and each heat exchanger 24 in a vertical pair is arranged into plane symmetry with the above horizontal plane as the benchmark. In addition, as the position of the air blowing flow path 26 is changed, the position of the blowing port 15 formed on the front surface of the casing 11 may also be changed. Hereinafter, the change of the position of the air outlet 15 is the same for each air conditioner 10 shown in FIGS. 5 to 7 described later. In addition, in the case of the modified example of FIG. 4, it is preferable to arrange the partition member 27 between each air-conditioning unit on either side. Even with such an arrangement, since each heat exchanger 24 and centrifugal blower 18 overlap each other when viewed from a direction perpendicular to the rotation axis P, the same effects as those of the above-described embodiment can be obtained.

As shown in FIG. 5 , two heat exchangers 24 may be arranged at an angular interval of 90 degrees around the rotation axis P of the centrifugal blower 18 in the casing 11 . That is, it is also possible to arrange the heat exchangers 24 on either the upper side or the left and right sides of the respective centrifugal blowers 18, so that the two heat exchangers 24 are arranged in an L-shape and arranged behind each heat exchanger 24. The guide block 25 forms an air blowing flow path 26 between the heat exchanger 24 and the guide block 25 . Also in this case, it is preferable to arrange the partition member 27 between each air-conditioning unit on either side. Even with such an arrangement, since the heat exchangers 24 and the centrifugal blower 18 overlap each other when viewed from a direction perpendicular to the rotation axis P, the same effects as those of the above-described embodiment can be obtained.

As shown in FIG. 6, two heat exchangers 24 may be arranged at an angular interval of 180 degrees in the casing 11 centered on the rotation axis P of the centrifugal blower 18, and one heat exchanger 24 may be spaced apart from each other. A heat exchanger 24 is arranged at an angular interval of 90 degrees. That is, the heat exchangers 24 may be arranged on the upper side and on the left and right sides of each centrifugal blower 18 , so that the three heat exchangers 24 may be arranged in a U-shape. Even with such an arrangement, since each heat exchanger 24 and centrifugal blower 18 overlap each other when viewed from a direction perpendicular to the rotation axis P, the same effects as those of the above-described embodiment can be obtained.

As shown in FIGS. 7( a ) and ( b ), an air-conditioning unit composed of a centrifugal blower 18 , a heat exchanger 24 , and a guide block 25 may be disposed continuously up and down in the casing 11 . Incidentally, the air conditioner 10 shown in FIG. 7(a) is configured 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 this embodiment shown is rotated 90 degrees and arrange|positioned. Even with such an arrangement, since each heat exchanger 24 and centrifugal blower 18 overlap each other when viewed from a direction perpendicular to the rotation axis P, the same effects as those of the above-described embodiment can be obtained.

In the air conditioner 10 of the above-mentioned embodiment shown in FIGS. 1 to 3 and other examples shown in FIGS. The orientation of 24 is changed to oblique. That is, each heat exchanger 24 may be arranged such that the stacking direction of the fins 24 a of each heat exchanger 24 crosses a vertical plane (or a horizontal plane) including the above-mentioned rotation axis P obliquely. In other words, each heat exchanger 24 may be arranged so that the fins 24 a constituting the heat exchanger 24 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 of the heat exchanger 24 which receives the air blown from the centrifugal blower 18 can be enlarged, and the heat exchange efficiency of the air conditioner 10 can be improved.

As shown in FIG. 9, it may also be formed so that the suction port 14 formed on the front surface of the housing 11 (front panel 13) is closed by a plurality of (in FIG. 9, two for each suction port 14) opening and closing panels 13a. Overlay structure. Of course, a structure in which each suction port 14 is covered with one large opening and closing panel is also possible. In this case, the suction port 14 can be exposed on the front surface of the housing 11 by swinging the opening and closing panel 13a forward with the lower edge as a fulcrum, so that the suction port 14 can be exposed on the front surface of the casing 11, so that the same effect as that of the above-mentioned embodiment and other examples can be obtained. The same effect as shown in the air conditioner 10 of front suction/front blowing.

In the above-mentioned embodiments and other examples, although the air outlets 15 are formed on the front surface of the casing 11 together with the suction inlets 14, they may be formed on the front surface of the casing 11 according to the environmental conditions (indoor environment, etc.) in which the air conditioner 10 is installed. Air outlets 15 are formed on the upper surface, the lower surface, and the left and right side surfaces of the body 11 .

The air guide 19 arranged between the suction port 14 and the centrifugal blower 18 may also be omitted.

The guide surface 25 a that guides the air flowing into the air blowing flow path 26 to the outlet 15 may be an inclined surface, or the guide block 25 may be omitted, and the guide surface 25 a may be formed on the inner surface of the housing 11 .

For the plurality of heat exchangers 24 arranged on both sides of the centrifugal blower 18 in the housing 11 , for example, in the case shown in FIG. 8 , at least one of these heat exchangers 24 may be arranged obliquely.

In this embodiment and other examples, the indoor unit is embodied as a wall-mounted air conditioner installed on the indoor wall W, but it is not limited to the wall-mounted type, and may also be embodied as a desktop air conditioner. In addition, It can be embodied as an outdoor unit.

Claims (10)

1. An air conditioner, in which a centrifugal blower is disposed in a casing respectively provided with an air inlet and an air outlet so that the rotation axis of the centrifugal blower is along the depth direction of the casing, and, The heat exchangers are arranged in parallel so as to at least partially overlap the centrifugal blower when viewed from a direction perpendicular to the rotation axis of the centrifugal blower. 2. The air conditioner according to claim 1, wherein a plurality of heat exchangers are arranged in the housing, and the heat exchangers are mutually connected with the rotation axis of the centrifugal blower as the center. Configured at angular intervals of 180 degrees or 90 degrees. 3. The air conditioner according to claim 2, wherein the heat exchangers arranged at an angular interval of 180 degrees with respect to the rotation axis of the centrifugal blower as the center are arranged such that Plane symmetry is based on a vertical plane or a horizontal plane including the rotation axis of the centrifugal blower. 4. The air conditioner according to claim 2, wherein the fins constituting at least one of the heat exchangers are stacked in a direction inclined with respect to the rotation axis of the centrifugal blower. 5. The air conditioner according to any one of claims 1 to 4, wherein, in the housing, on the rear side of the heat exchanger viewed from the centrifugal blower, there is provided a The air blowing flow path communicated with the blowing port, on the inner surface of the air blowing flow path opposite to the back of the heat exchanger, there is provided the air blowing flow blown from the back of the heat exchanger toward The blowing outlet is smoothly guided by the guide surface. 6. The air conditioner according to any one of claims 1 to 5, wherein the centrifugal blower is arranged to face the suction port provided on the front surface of the casing, and An air guide whose diameter decreases toward the inside of the housing is arranged between the suction port and the centrifugal blower. 7. The air conditioner according to any one of claims 1 to 6, wherein, in the housing, the suction port is provided on the front surface of the housing, and The air outlet is provided on the front surface. 8. The air conditioner according to any one of claims 1 to 7, wherein the casing is installed in a state where the back of the casing faces the wall surface of the room, and the suction A mouth and the blowing outlet are respectively provided on the front surface of the housing. 9. The air conditioner according to claim 8, wherein the suction port and the blowing port are arranged on the front surface of the casing, and the blowing ports are located on the left and right sides of the suction port respectively. sides. 10. The air conditioner according to claim 9, wherein a plurality of suction inlets are provided on the front surface of the casing, and a plurality of centrifugal blowers are arranged at the respective suction inlets to face each other. In the casing, and in the casing, the heat exchangers are respectively arranged on the left and right sides of the centrifugal blower, and between the back surfaces of the heat exchangers and the outlets, there is a The air blowing flow blown from the rear surface of each of the heat exchangers is directed toward the air blowing flow path guided by each of the blowing outlets.

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