JP2006029702A

JP2006029702A - Air conditioner

Info

Publication number: JP2006029702A
Application number: JP2004210415A
Authority: JP
Inventors: Hirokazu Fujino; Genei Kin; Shimei Tei; Takashi Yoshioka; 俊吉岡; 宏和藤野; 志明鄭; 鉉永金
Original assignee: Daikin Ind Ltd; ダイキン工業株式会社
Priority date: 2004-07-16
Filing date: 2004-07-16
Publication date: 2006-02-02
Also published as: WO2006009047A1; US20090114377A1; KR100840483B1; AU2005264386A1; KR20070024705A; EP1775524A1; CN1989376A

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner capable of sufficiently meeting a compactification (thinning compactification) request particularly in a depth direction without lowering performance as an air conditioner in regard to an air conditioner comprised by arranging a heat exchanger and a blower in a casing. <P>SOLUTION: The centrifugal blower 18 is arranged in the casing such that a rotation axis P is in parallel with the depth direction of the air conditioner, and a pair of heat exchangers 24 is arranged on both right and left sides of the centrifugal blower 18 so as to partially overlap the centrifugal blower 18 in a horizontal direction orthogonal to the rotation axis P of the centrifugal blower 18. In other words, the heat exchangers 24 are arranged so as to be in a plane symmetrical arrangement state when a vertical plane including the rotation axis P of the centrifugal blower 18 is considered as a symmetry plane. By this, the centrifugal blower 18 and the heat exchangers 24 are not in arrangement states overlapping in the depth direction of the air conditioner, and compactification in the depth direction becomes possible. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

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

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 this conventional air conditioner 1, a heat exchanger is arranged in a box-like casing so as to face the suction port on the front surface of the casing, and a centrifugal blower is arranged on the back side of the heat exchanger. And after the air sucked into the casing through the suction port with the rotational drive of the centrifugal blower passes through the heat exchanger and is temperature-adjusted, the air is supplied from the air outlets provided on the upper surface and the left and right surfaces of the casing. It blows out of the casing.

In addition to the conventional air conditioner 1 that uses a centrifugal blower as a blower, as described in, for example, Patent Document 2, an indoor unit for air conditioning that uses a cross-flow blower as a blower (hereinafter, “conventional air conditioner 2”). Is also known.) In this conventional air conditioner 2, a cross-flow blower is disposed at the upper part in the box-shaped casing, and a heat exchanger is disposed at a position in the casing that is below the blower. The air sucked into the casing from the intake grill provided at the upper front portion of the casing in accordance with the rotational drive of the cross flow blower passes through the heat exchanger and is adjusted in temperature, and then provided at the lower front portion of the casing. The blowout grill is blown out of the casing.
Japanese Patent Laid-Open No. 10-122589 (Claim 1, paragraph number [0026], FIG. 2) JP-A-9-217942 (Claim 1, FIG. 1 and FIG. 2)

By the way, recent air conditioners are required to be compact in the depth direction (that is, thin and compact) from the viewpoint of reducing the installation space. In particular, when the air conditioner is configured as a wall-mounted indoor unit installed on an indoor wall surface or the like, there is a high demand for such a thin and compact design in order to improve indoor interior characteristics. Furthermore, in the case of an air conditioner configured as a wall-mounted indoor unit, there is a similar demand for downsizing in the vertical direction (i.e., bulky downsizing) due to the space constraints of the installed indoor wall surface. Yes.

In this regard, in the case of the conventional air conditioner 1 described above, the heat exchanger and the centrifugal blower are arranged in the casing in the depth direction so that the request for downsizing (thinning and compactness) in the depth direction is sufficient. It was hard to say that I was responding. Moreover, in the case of the said conventional air conditioner 2, since it becomes an arrangement | positioning aspect with which a heat exchanger and a crossflow air blower overlap in an up-down direction within a casing, it fully responds to the request | requirement of vertical downsizing (bulky compactness). It was hard to say. In order to make the conventional air conditioner 2 thinner and more compact, it is conceivable to reduce the fan diameter of the crossflow blower. However, in such a case, the air volume decreases and the air conditioning is reduced. Since the performance as a machine deteriorates, it is not easy to appropriately respond to the demands for thin and compact and bulky compact.

This invention is made | formed in view of the said situation, The objective is in the air conditioner which arrange | positions a heat exchanger and a fan in a casing, Comprising: Without reducing the performance as an air conditioner In particular, an object of the present invention is to provide an air conditioner that can sufficiently meet the demand for downsizing (thinning and downsizing) in the depth direction.

In order to achieve the above object, the invention according to claim 1 relating to an air conditioner is characterized in that a centrifugal blower is provided in a casing provided with an air inlet and an outlet, respectively, and the rotational axis of the centrifugal blower is a casing. And the heat exchanger is arranged so as to overlap at least partially with the centrifugal blower in a direction orthogonal to the rotational axis of the centrifugal blower.

Therefore, according to the first aspect of the present invention, the centrifugal blower and the heat exchanger are not arranged in the casing in the depth direction in the casing, but are arranged in the direction perpendicular to the depth direction of the casing. It is also possible to respond appropriately to the demand for downsizing (that is, thinning) of the air conditioner in the depth direction.

Moreover, the invention of claim 2 is the air conditioner of claim 1, wherein a plurality of the heat exchangers are arranged in the casing, and each heat exchanger has an axis of rotation of the centrifugal blower. The gist is that they are arranged at positions with an angular interval of 180 degrees or 90 degrees, respectively, in the case of the center. Therefore, according to the second aspect of the present invention, the heat exchanger can be arranged at a plurality of positions on the air blowing side of the centrifugal blower, so that the heat exchange efficiency can be improved satisfactorily.

Further, in the air conditioner according to claim 2, the invention according to claim 3 is arranged at a position spaced apart by 180 degrees when the rotation axis of the centrifugal blower is the center. The gist of each of the heat exchangers is that they are arranged in a plane-symmetric arrangement when the vertical plane or horizontal plane including the rotation axis of the centrifugal blower is a plane of symmetry. Therefore, according to the third aspect of the invention, the air volume distribution of the air that passes through each heat exchanger and is blown out of the casing from the blowout port can be made uniform.

Further, the invention according to claim 4 is the air conditioner according to claim 2, wherein at least one of the heat exchangers has a vertical plane or a horizontal plane including a rotation axis of the centrifugal blower. Thus, the gist of the heat exchanger is that the fins are arranged in an arrangement manner in which the lamination direction of the fins is oblique. Therefore, according to the invention described in claim 4, for the heat exchanger arranged in the arrangement mode in which the fins are stacked obliquely, the effective heat exchange area in the heat exchanger can be secured widely. Thus, the heat exchange efficiency in the air conditioner can be improved satisfactorily.

The invention according to claim 5 is the air conditioner according to any one of claims 1 to 4, wherein the rear surface of the heat exchanger when viewed from the centrifugal blower in the casing. An air outlet passage communicating with the outlet is provided on the side, and an air outlet flow blown from the back of the heat exchanger is provided on the inner surface of the air outlet facing the back of the heat exchanger. The gist is that a guide surface that can be smoothly guided toward is provided. Therefore, according to the fifth aspect of the present invention, the air blown from the back surface of the heat exchanger can be smoothly guided to the air outlet side, and the pressure loss of the air outlet flow in the air outlet passage Can be reduced as much as possible.

The invention according to claim 6 is the air conditioner according to any one of claims 1 to 5, wherein the centrifugal blower is provided on a side surface on the near side in the depth direction in the casing. It is arranged so as to be opposed to the suction port, and between the suction port and the centrifugal blower, an air guide having a diverging shape toward the front side in the depth direction of the casing is disposed. It is a summary. Therefore, according to the sixth aspect of the present invention, since air can smoothly flow from the suction port to the centrifugal blower via the air guide, noise reduction during air suction can be achieved.

In addition, the invention according to claim 7 is the air conditioner according to any one of claims 1 to 6, wherein the casing has a suction port on one side surface in the depth direction front side of the casing. And a blowout port is provided on the one side surface or the other side surface of the casing. Therefore, according to the invention described in claim 7, since the air sucked into the casing from one side surface in the depth direction in the casing can be blown out from the one side surface or the other side surface of the casing, When installing, according to the surrounding environment where this air conditioner is installed, it can respond flexibly so that the air blowing direction from a blower outlet may become suitable.

The invention according to claim 8 is the air conditioner according to any one of claims 1 to 7, wherein the casing is installed in a state where the back surface of the casing faces an indoor wall surface. The gist of the present invention is that the suction port and the air outlet are respectively provided on a front surface that is one side surface in the depth direction of the casing. Therefore, according to the eighth aspect of the present invention, the air suction into the casing and the air blowing out of the casing are front suction and front blow. Therefore, the air conditioner to be configured as a wall-mounted indoor unit can be installed close to the ceiling at the upper part of the indoor wall surface, and even if it is installed near the window glass, it was blown out from the outlet The possibility that the temperature of the air is changed by heat exchange with the window glass can be avoided.

The invention according to claim 9 is the air conditioner according to claim 8, wherein the suction port and the air outlet are located on the front side which is one side surface in the depth direction of the casing, and the left and right sides of the suction port. The gist is that the air outlets are provided on both sides. Therefore, according to the ninth aspect of the present invention, the temperature-adjusted air is blown out forward from the respective outlets provided on the left and right sides of the suction port, and the air is spread over a wide range. Can be blown out.

Further, the invention according to claim 10 is the air conditioner according to claim 9, wherein a plurality of suction ports are provided on a front surface which is one side surface in the depth direction of the casing, and each of the suction ports is provided. A plurality of centrifugal blowers are disposed in the casing so as to face each other, and the heat exchangers are disposed on the left and right sides of the centrifugal blower in the casing, respectively, and the back surface of each of the heat exchangers and the respective outlets In the meantime, the gist is that an air blowing flow path for guiding the air blowing flow blown from the back surface of each heat exchanger toward each of the blowing outlets is provided. Therefore, according to the invention described in claim 10, the size of the air conditioner can be increased according to the size of the indoor space in which the air conditioner is installed.

According to the first to tenth aspects of the present invention, there is an air conditioner in which a heat exchanger and a blower are arranged in a casing, and the depth of the air conditioner is particularly reduced without degrading the performance as an air conditioner. It is possible to fully respond to the demand for compactness in direction (thinning compactness).

Hereinafter, an embodiment in which the present invention is embodied in an indoor unit in an air conditioner 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, and the rear surface (rear surface) of the casing 11 is a vertical beam that forms a horizontal beam close to the ceiling. It is configured as a wall-mounted thin indoor unit installed in a state of being opposed to a narrow wall surface portion W. The casing 11 includes a casing body 12 having an open front side and a front panel 13 that closes the front side of the casing body 12. Suction ports 14 in which a plurality of long flaps are arranged in the vertical direction are respectively provided at two positions separated in the left-right direction on the front surface side (front side) of the front panel 13. Further, at each of the two left and right portions of each suction port 14, there are respectively provided outlets 15 in which a plurality of short flaps are arranged in the vertical direction. A pair of refrigerant pipes 16 are drawn out from the right side wall 12 b of the casing body 12, and a connection unit 17 is provided at the drawing end of each refrigerant pipe 16.

Next, the arrangement of members 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 state of the refrigerant pipe 16 in the casing 11 and the drain are not shown. FIG. 3 is a plan sectional view showing the air conditioner 10 shown in FIG. 1 at a middle position in the vertical direction.

As shown in FIGS. 2 and 3, in the casing 11, a plurality (a pair of left and right) centrifugal blowers 18 are arranged in a state where the rotation axis P is along the front-rear direction (that is, the depth direction of the casing 11). It arrange | positions so that each inlet 14 may be opposed separately. An air guide (also referred to as a bell mouth) 19 having an annular shape when viewed from the front is arranged between the suction port 14 and the centrifugal blower 18 facing each other so as to be coaxial with the centrifugal blowers 18. ing. Each air guide 19 is formed so as to have a divergent shape from the rear side on the centrifugal blower 18 side toward the front side on the suction port 14 side (that is, the front side in the depth direction of the casing 11). As shown in FIG. 2, the front end edge is fixed to the casing 11 by being fitted into and supported by the front panel 13 from the back side of the suction port 14. Each air guide 19 has a rear end edge formed to have a smaller diameter than the front end edge thereof and extends to the vicinity of the front end of the centrifugal blower 18, and the air flowing into the casing 11 from the suction port 14 is supplied to the centrifugal blower 18. It is designed to guide you smoothly.

The centrifugal blower 18 includes a blade portion 22 including a hub 20 having a substantially disk shape and a plurality of arc-shaped blades 21 projecting forward from the front surface of the outer peripheral portion of the hub 20; And a motor 23 for rotating the blade portion 22. The centrifugal blower 18 has a centrifugal blow function that blows out air from the centrifugal blower 18 toward the centrifugal direction (radial direction) perpendicular to the rotation axis P by centrifugal force generated based on the rotational drive of the blade portion 22. The blade portion 22 has a contour shape (a shape in a front view) when viewed from the front side that is substantially the same as the opening shape of the rear edge of the air guide 19. Each centrifugal blower 18 has a support shaft projecting so that each motor 23 is fixed to the rear side wall surface of the casing 11 and the axis line coincides with the rotation axis P from the motor 23 toward the front. The blade | wing part 22 of each centrifugal blower 18 is rotatably supported by the front-end | tip part of 23a.

In the casing 11 (casing body 12), a pair of left and right heat exchangers 24 are disposed on both the left and right sides of the centrifugal blower 18 so as to sandwich the centrifugal blower 18 from both the left and right sides. Each heat exchanger 24 is formed by stacking a plurality of fins 24a. In this embodiment, the stacking direction of the fins 24a in each heat exchanger 24 is parallel to a vertical plane including the rotation axis P of the centrifugal blower 18. Has been placed. That is, each heat exchanger 24 is arranged so that the center of each heat exchanger 24 is positioned at an angular interval of 180 degrees with the rotation axis P of the centrifugal blower 18 as the center. The heat exchangers 24 forming a pair are arranged in a plane-symmetric arrangement when the vertical plane including the rotation axis P of the centrifugal blower 18 is a symmetry plane. And by setting it as such an arrangement | positioning aspect, each heat exchanger 24 partially overlaps with this centrifugal blower 18 in the direction orthogonal to the rotating shaft P of the centrifugal blower 18, respectively. In this embodiment, when the direction along the rotation axis P of the centrifugal blower 18 is the depth direction, the entire length in the depth direction of the centrifugal blower 18 overlaps (overlaps) a part of the length in the depth direction of the heat exchanger 24. ).

Further, in the casing 11 (casing body 12), an arcuate guide surface 25a is provided on the back surface side of the heat exchanger 24 when viewed from the centrifugal blower 18 on the surface facing the heat exchanger 24. Guide blocks 25 are respectively arranged. An air outlet passage 26 communicating with the outlet 15 is provided between each guide block 25 and each heat exchanger 24. Therefore, after the air blown in the radial direction from the centrifugal blower 18 passes between the fins 24a of the heat exchanger 24, the air blowing flow is along the guide surface 25a in the air blowing flow path 26. It will be guided smoothly toward the outlet 15.

Then, next, it demonstrates below about the effect | action in the air conditioner 10 of this embodiment comprised as mentioned above.
Now, when the blade portion 22 of the centrifugal blower 18 is rotationally driven based on the driving force of the motor 23, as indicated by an arrow A in FIG. It is sucked toward the blower 18. At that time, a large volume of air is smoothly guided from the suction port 14 into the centrifugal blower 18 along the inner surface of the air guide 19 that is widened toward the front. Then, the air flowing into the centrifugal blower 18 is blown out in the radial direction perpendicular to the rotation axis P as indicated by an arrow a in FIG. 3 by the centrifugal blower function of the centrifugal blower 18.

Then, the air blown out from the centrifugal blower 18 passes between the fins 24a of the heat exchangers 24 arranged in parallel on the left and right sides of the centrifugal blower 18, and at that time, the refrigerant pipe 16 The temperature is adjusted (heated or cooled) by heat exchange with the refrigerant flowing in the heat exchanger 24 via the. Here, the heat exchangers 24 arranged on the left and right sides of the centrifugal blower 18 are arranged in a plane-symmetric manner when the vertical plane including the rotation axis P of the centrifugal blower 18 is a symmetric plane. Therefore, the air volume distribution of the air that passes through each of the heat exchangers 24 and is blown out from the back surface of each of the heat exchangers 24 is substantially uniform on the left and right.

Thereafter, the air blown out from the back surface of each heat exchanger 24 flows into an air blowing channel 26 formed between each heat exchanger 24 and the guide block 25. Then, in the air blowing channel 26, the air is a guide surface in which the direction of the air blowing flow is an arcuate surface formed on the inner surface side of the guide block 25 as shown by an arrow b in FIG. By 25a, it guides smoothly toward the blower outlet 15 of the front side. Therefore, the pressure loss of the air blowing flow in the air blowing channel 26 is suitably reduced.

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

Further, when the air conditioner 10 is installed on the indoor wall surface W, as shown in FIGS. 1 and 3, the casing 11 (casing body 12) is fixed with the back surface facing the indoor wall surface W. Is done. Here, in the air conditioner 10 of the present embodiment, the centrifugal blower 18 and the heat exchanger 24 are not arranged in the front-rear direction in the depth direction of the air conditioner 10 in the casing 11 but are orthogonal to the depth direction. It is set as the arrangement | positioning aspect which overlaps partially in the left-right direction. Further, the centrifugal blower 18 and the heat exchanger 24 are not arranged in the casing 11 so as to overlap in the vertical direction. Therefore, the size of the air conditioner 10 in the front-rear direction and the up-down direction is compact. It is possible to install without impairing the performance.

According to the air conditioner 10 of the said embodiment, the following effects can be acquired.
(1) The centrifugal blower 18 and the heat exchanger 24 are not arranged in the casing 11 so as to overlap in the front-rear direction of the casing 11 (the depth direction of the air conditioner 10), but in the left-right direction orthogonal to the rotational axis P of the centrifugal blower 18. It is set as the arrangement | positioning aspect which overlaps. Therefore, it is possible to suitably respond to a request for downsizing (that is, thinning) in the depth direction of the air conditioner 10 listed to improve indoor interior properties. Moreover, when setting it as such an arrangement | positioning aspect, since the centrifugal blower 18 is not reduced in size, a required and sufficient air volume can be ensured and the performance as the air conditioner 10 does not fall.

(2) Since the heat exchanger 24 is disposed in each of the left and right positions (plural positions) on the air blowing side of the centrifugal blower 18 in the casing 11, the air blown by the centrifugal blower 18 in the radial direction is left and right. Heat can be exchanged by the heat exchangers 24 on both sides, and the heat exchange efficiency can be improved.

(3) A pair of heat exchangers 24 arranged so as to sandwich one centrifugal blower 18 from both sides are symmetrical in the left-right direction when the vertical plane including the rotation axis P of the centrifugal blower 18 is a symmetry plane. It is an arrangement mode. Therefore, after the temperature is adjusted by passing through each heat exchanger 24, the air volume distribution of the air blown out from each outlet 15 can be made uniform.

(4) In addition, since the air blown from the back surface of the heat exchanger 24 and flows into the air blowing channel 26 can be smoothly guided to the outlet 15 side along the guide surface 25a of the guide block 25, the air blowing channel It is possible to reduce the pressure loss of the air blowing flow in the 26 as much as possible.

(5) On the other hand, with respect to the air sucked from the suction port 14 toward the centrifugal blower 18 in the casing 11, the front side disposed between the centrifugal blower 18 and the suction port 14 has an air guide 19 having a widening end. Inflow guide into the centrifugal blower 18 can be made smoothly. Therefore, it is possible to satisfactorily reduce noise during air suction from the suction port 14 into the casing 11.

(6) Moreover, in this embodiment, after adjusting the temperature of the air sucked from the suction port 14 provided on the front surface of the casing 11, the air outlet 15 provided on the front surface of the casing 11 similarly to the suction port 14. The air blowing direction is set so as to blow forward. Therefore, even when the wall-mounted air conditioner 10 is installed with the back surface of the casing 11 in contact with the indoor wall surface W, the air blowing direction is flexible in consideration of the surrounding environment such as curtain rails and ceiling surfaces. Can be installed in a simple manner.

(7) In addition, in the case of a configuration in which front suction and front blowing are performed as in the air conditioner 10 of the present embodiment, the wall-mounted air conditioner 10 is an upper portion of the indoor wall surface W (ie, a position close to the ceiling). Even if it installs in, air suction and blowing are not restricted. Further, even when such a wall-mounted air conditioner 10 is installed in the vicinity of a window glass, for example, the air blowing direction does not follow the window glass. The possibility of changing the temperature by heat exchange can also be avoided.

(8) A pair of air outlets 15 is provided for one air inlet 14 so as to sandwich the air inlet 14 from both sides, and the temperature-adjusted air is blown out from each air outlet 15. It has become. Therefore, the temperature-adjusted air can be blown out from the front surface of the casing 11 to the indoor side over a wide range.

(9) Further, in the present embodiment, a plurality of air conditioning units (two in the left and right direction in the present embodiment) including the centrifugal blower 18, the heat exchanger 24, the guide block 25, and the like as described above are provided in the casing 11. . Then, air is sucked from the air inlets 14 of the air conditioning units, and the temperature of the air is adjusted and then blown out from the air outlets 15 of the air conditioning units. Therefore, by adjusting the number of the air conditioning units according to the environment (the size of the indoor space) where the air conditioner 10 is installed, it is possible to provide appropriate air conditioning performance corresponding to the installation environment conditions. .

The present embodiment may be changed to another embodiment (another example) as follows.
-For example, like the example 1 shown in FIG. 4, you may make it the heat exchanger 24 arrange | position at the up-and-down both sides of the centrifugal blower 18 in the casing 11 (casing main body 12). That is, a pair of upper and lower heat exchangers 24 sandwiching the centrifugal blower 18 from both the upper and lower sides are arranged for each centrifugal blower 18, and the guide block 25 is arranged on the back side of each heat exchanger 24 to form the air blowing flow path 26. May be. In this case, the heat exchangers 24 are arranged so that the stacking direction of the fins 24a is parallel to a horizontal plane including the rotation axis P of the centrifugal blower 18, and the heat exchangers 24 that form a pair in the upper and lower sides. They are arranged in an arrangement manner that is plane-symmetric when the horizontal plane including the rotation axis P of the centrifugal blower 18 is a plane of symmetry. In addition, since the position of the air blowing flow path 26 formed between the heat exchanger 24 and the guide block 25 is changed in the blower outlet 15 provided in the front surface of the casing 11, the position of the air blowing flow path 26 is changed. The position formed following the above is changed. Hereinafter, the change in the formation position of the air outlet 15 is the same in each air conditioner 10 shown in FIGS. In this case, a partition member 27 may be provided between the left and right air conditioning units. And also when it is set as such an arrangement | positioning aspect, since each heat exchanger 24 will each overlap with this centrifugal fan 18 in the direction orthogonal to the rotating shaft P of the centrifugal fan 18, respectively, the said embodiment and Similar effects can be achieved.

In addition, as in, for example, another example 2 shown in FIG. 5, the heat exchanger 24 has an angular interval of 90 degrees in the casing 11 (casing body 12) with the rotation axis P of the centrifugal blower 18 as the center. It may be arranged at each position. That is, a pair of heat exchangers 24 facing the centrifugal blower 18 from one side in the up-down direction and one side in the left-right direction are arranged for each centrifugal blower 18 and arranged on the back side of each heat exchanger 24. The guide block 25 may be arranged to form the air outlet channel 26. In this case as well, a partition member 27 may be provided between the left and right air conditioning units. And also when it is set as such an arrangement | positioning aspect, since each heat exchanger 24 will each overlap with this centrifugal fan 18 in the direction orthogonal to the rotating shaft P of the centrifugal fan 18, respectively, the said embodiment and Similar effects can be achieved.

In addition, as in, for example, another example 3 shown in FIG. 6, the heat exchanger 24 has an angular interval of 180 degrees in the casing 11 (casing body 12) when the rotation axis P of the centrifugal blower 18 is the center. A pair of heat exchangers 24 may be arranged at the positions where they are located, and one heat exchanger 24 may be arranged at an angle interval of 90 degrees with respect to one of the heat exchangers 24. That is, the three heat exchangers 24 may be arranged for each centrifugal blower 18 so as to face the centrifugal blower 18 from one side in the vertical direction and both left and right sides in a U-shaped arrangement. And also when it is set as such an arrangement | positioning aspect, since each heat exchanger 24 will each overlap with this centrifugal fan 18 in the direction orthogonal to the rotating shaft P of the centrifugal fan 18, respectively, the said embodiment and Similar effects can be achieved.

In addition, for example, as shown in FIGS. 7 (a) and 7 (b), the air conditioning unit composed of the centrifugal blower 18, the heat exchanger 24, the guide block 25, etc. You may provide so that it may continue. Incidentally, an air conditioner 10 according to another example 4 of FIG. 7A is obtained by making the air conditioner 10 of another example 1 shown in FIG. 4 in the vertical direction, and another example 5 of FIG. The air conditioner 10 according to FIG. 2 is obtained by making the air conditioner 10 of the present embodiment shown in FIG. 2 in the vertical direction. And also when it is set as such an arrangement | positioning aspect, since each heat exchanger 24 will each overlap with this centrifugal fan 18 in the direction orthogonal to the rotating shaft P of the centrifugal fan 18, respectively, the said embodiment and Similar effects can be achieved.

-Moreover, in the air conditioner 10 of the said embodiment shown in FIGS. 1-3 and each other example shown in FIGS. 4-7, the arrangement | positioning aspect of the heat exchanger 24 arrange | positioned in the casing 11 is shown in FIG. It is good also as diagonal arrangement | positioning like the other example 6 shown. That is, the heat exchangers 24 may be arranged in an arrangement mode in which the stacking direction of the fins 24 a of the heat exchanger 24 is inclined with respect to a vertical plane (or horizontal plane) including the rotation axis P of the centrifugal blower 18. In the case of such an oblique arrangement, since the effective heat exchange area on the surface side of the heat exchanger 24 that receives the air blowing flow from the centrifugal blower 18 can be secured widely, the heat exchange efficiency in the air conditioner 10 is good. To improve.

In addition, as in, for example, another example 7 illustrated in FIG. 9, a plurality of (two in each of the suction ports 14 in FIG. 9) opening / closing panels 13 a provided on the front surface (front panel 13) of the casing 11 are provided. It is good also as a structure covered by. Of course, you may make it cover with one large opening-and-closing panel for every suction inlet 14. FIG. Also in this case, when the open / close panel 13a is opened by swinging the upper end side forward with the lower end edge as the swing fulcrum, the suction port 14 appears on the front surface of the casing 11, and the front surface The suction and front blowing air conditioner 10 can achieve the same effects as those of the above-described embodiment and the other examples.

In each of the above-described embodiments and the respective examples, the air outlets 15 are provided on the front surface (front panel 13) of the casing 11 together with the air inlets 14. However, the environmental conditions in which the air conditioner 10 is installed for each air outlet 15 ( It may be provided on the upper surface, the lower surface, and the left and right side surfaces of the casing 11 according to the indoor environment or the like.

The air guide 19 disposed between the suction port 14 and the centrifugal blower 18 is not necessarily required.
The guide surface 25a for guiding the air outlet flow toward the outlet 15 in the air outlet channel 26 may be a slope instead of an arcuate surface, and the guide block 25 is omitted and formed on the inner surface of the casing 11 It may be what was done.

The plurality of heat exchangers 24 arranged so as to sandwich the centrifugal blower 18 from both sides in the casing 11 may have a configuration in which at least one is obliquely arranged in the case of, for example, FIG. Similarly, the heat exchanger 24 may not be obliquely arranged.

-In this embodiment and each example, it was embodied in the wall-mounted air conditioner indoor unit installed on the indoor wall surface W, but is not limited to the wall-mounted air conditioner, and may be embodied in a stationary air conditioner. Further, it may be embodied in an outdoor unit.

The external appearance perspective view which shows the installation state of the air conditioner in this embodiment. The partially omitted perspective view showing the internal configuration of the air conditioner of the present embodiment. The plane sectional view of the air harmony machine of this embodiment. FIG. 6 is a partially omitted perspective view showing an internal configuration of an air conditioner according to another example 1; The partially-omission perspective view which shows the internal structure of the air conditioner of the another example 2. FIG. The partially-omission perspective view which shows the internal structure of the air conditioner of the another example 3. FIG. (A) (b) is a partially-omission perspective view which shows the internal structure of the air conditioner of the examples 4 and 5. The plane sectional view of the air harmony machine of example 6. The external appearance perspective view which shows the installation state of the air conditioner of another example 7. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Air conditioner, 11 ... Casing, 14 ... Suction inlet, 15 ... Air outlet, 18 ... Centrifugal blower, 19 ... Air guide, 24 ... Heat exchanger, 24a ... Fin, 25a ... Guide surface, 26 ... Air blowing flow path , P ... rotation axis, W ... indoor wall surface.

Claims

A centrifugal blower is disposed in a casing provided with an air inlet and an air outlet, respectively, so that the rotational axis of the centrifugal blower is along the depth direction of the casing, and the heat exchanger is connected to the rotational axis of the centrifugal blower. An air conditioner arranged so as to at least partially overlap with the centrifugal blower in an orthogonal direction.
A plurality of the heat exchangers are disposed in the casing, and each heat exchanger is disposed at a position with an angular interval of 180 degrees or 90 degrees centered on the rotation axis of the centrifugal blower. The air conditioner according to claim 1.
Each heat exchanger that is arranged at an angular interval of 180 degrees when centered on the rotational axis of the centrifugal blower is symmetrical with respect to a vertical plane or a horizontal plane that includes the rotational axis of the centrifugal blower. The air conditioner according to claim 2, wherein the air conditioner is arranged in an arrangement form that is plane-symmetric when a plane is used.
At least one of the heat exchangers is arranged in an arrangement mode in which the stacking direction of the fins in the heat exchanger is oblique with respect to a vertical plane or a horizontal plane including the rotation axis of the centrifugal blower. The air conditioner according to claim 2.
In the casing, when viewed from the centrifugal blower, an air blowing passage communicating with the blowout port is provided on the back side of the heat exchanger, and an inner surface of the air blowing passage facing the back of the heat exchanger The air according to any one of claims 1 to 4, further comprising a guide surface capable of smoothly guiding an air blowing flow blown from the back surface of the heat exchanger toward the air outlet. Harmony machine.
The centrifugal blower is disposed so as to face a suction port provided on one side which is the front side in the depth direction in the casing, and between the suction port and the centrifugal blower, the front side in the depth direction of the casing. The air conditioner as described in any one of Claims 1-5 by which the air guide which makes a divergent shape toward the side is arrange | positioned.
The casing is provided with a suction port on one side surface in the depth direction of the casing, and a blower outlet is provided on the one side surface or the other side surface of the casing. An air conditioner according to claim 1.
The casing is installed with the back surface of the casing facing an indoor wall surface, and the suction port and the air outlet are respectively provided on a front surface that is one side surface in the depth direction of the casing. The air conditioner according to any one of claims 1 to 7.
The air according to claim 8, wherein the air inlet and the air outlet are provided so that the air outlets are respectively located on the left and right sides of the air inlet on the front surface that is one side surface in the depth direction of the casing. Harmony machine.
A front surface, which is one side surface in the depth direction 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 each of the suction ports. The heat exchangers are respectively disposed on the left and right sides of the centrifugal blower, and the air blown air blown from the back of each heat exchanger is provided between the back of each heat exchanger and each of the blow outlets. The air conditioner of Claim 9 in which the air blowing flow path for guide | inducing toward is provided.