WO2020261465A1

WO2020261465A1 - Air conditioner

Info

Publication number: WO2020261465A1
Application number: PCT/JP2019/025521
Authority: WO
Inventors: 貴宏山谷; 佑樹原; 亮堀江; 浩三浜端; 裕之益田; 康太永野
Original assignee: 三菱電機株式会社
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-12-30
Also published as: AU2019453586B2; JPWO2020261465A1; AU2019453586A1

Abstract

The present invention is provided with: a blower unit that has a blower and a first housing that accommodates the blower; a heat exchanger unit that has a heat exchanger and a second housing that accommodates the heat exchanger; and a frame-like connection flange that connects the first housing and the second housing. The first housing has a facing plate that faces the second housing and has formed therein an outflow port. The second housing has a facing plate that faces the first housing and has formed therein an intake port. The connection flange connects the facing plate of the first housing and the facing plate of the second housing, and the upper surface of the connection flange is in a position lower than the upper surface of the first housing and the upper surface of the second housing.

Description

Air conditioner

The present invention relates to an air conditioning device installed in an attic, a ceiling, or the like to supply conditioned air into a room.

As an air conditioner installed in the attic or the ceiling, a blower and a heat exchanger are each housed in a housing (see, for example, Patent Document 1). The air conditioner of Patent Document 1 includes a blower unit having a rectangular parallelepiped housing and a blower provided inside the housing, and a rectangular parallelepiped housing and a heat exchanger provided inside the housing. It is equipped with a heat exchanger unit having and. Then, the housing of the blower unit and the housing of the heat exchanger unit are connected so as to communicate with each other through an opening formed in the housing. The blower unit and the heat exchanger unit in the connected state form one rectangular parallelepiped shape as a whole.

Japanese Unexamined Patent Publication No. 2016-173205 (FIGS. 1 and 3)

Some attics, which are one of the installation destinations of air conditioners, have a truss structure. In the attic of the truss structure, a plurality of support members assembled in a triangle are arranged side by side. An air conditioner having a rectangular parallelepiped shape as a whole in which a blower unit and a heat exchanger unit are connected as described in Patent Document 1 is supported by a triangular support member forming a truss structure depending on its size. Could not be placed between the timber.

The present invention is an invention made against the background of the above problems, and obtains an air conditioner that can be easily installed even in the attic of a truss structure.

The air conditioner according to the present invention is a heat exchanger having a blower, a blower unit having a first housing for accommodating the blower, a heat exchanger, and a second housing for accommodating the heat exchanger. The unit is provided with a frame-shaped connecting flange for connecting the first housing and the second housing, and the first housing is a facing plate facing the second housing and having an outlet formed. The second housing has a facing plate facing the first housing and having an introduction port formed therein, and the connecting flange is the facing plate of the first housing and the second housing. The upper surface of the connection flange, which is connected to the facing plate of the body, is located at a position lower than the upper surface of the first housing and the upper surface of the second housing.

According to the present invention, the first housing of the blower unit and the second housing of the heat exchanger unit are connected by a frame-shaped connecting flange. The upper surface of the connection flange is lower than the upper surface of the first housing and the upper surface of the second housing. Therefore, by arranging the air conditioner so that the triangular support material constituting the truss structure is located between the first housing and the second housing, that is, above the connection flange, air conditioning is performed. Interference with the truss structure of the device can be avoided. Therefore, it is possible to obtain an air conditioner that is easy to install even in the attic of a truss structure.

It is a perspective view of the air conditioner 100 which concerns on embodiment. It is a side view of the air conditioner 100 which concerns on embodiment. It is a perspective view of the state in which the connection flange 60 is attached to the heat exchanger unit 4 which concerns on embodiment. It is a perspective view of the state in which the connection flange 60 is attached to the blower unit 1 which concerns on embodiment. FIG. 4 is an exploded perspective view of a state in which the connection flange 60 is removed from FIG. It is a figure explaining the ZZ cross section through the suction port 16, the outlet 18, and the outlet 47 of the air conditioner 100 which concerns on embodiment. It is a figure explaining the guide 71 which concerns on embodiment. It is a figure explaining an example of the operation of the guide 71 which concerns on embodiment. It is a figure explaining the XY cross section through the scroll casing 21 of the air conditioner 100 which concerns on embodiment. It is a figure explaining the wind speed distribution of the blower unit 1 and the downstream side thereof which concerns on embodiment. It is a figure explaining the wind speed distribution which concerns on a comparative example. It is an enlarged view of the vicinity of the 2nd partition plate 73 of FIG. It is a side view of the air conditioner 100 in a state where the connection flange 60 and the blower unit 1 according to the embodiment are integrated and removed from the heat exchanger unit 4. It is a side view of the air conditioner 100 in a state where the connection flange 60 and the heat exchanger unit 4 according to the embodiment are integrally removed from the blower unit 1. It is a figure explaining the 1st reinforcing plate 83 and the 2nd reinforcing plate 84 which concerns on embodiment. It is a figure explaining the state which the air conditioner 100 which concerns on embodiment is installed in the attic of the truss structure. It is a figure explaining the state which the blower unit 1 was removed from FIG. It is the figure which looked at the front view of the connection flange 60 in the Y direction.

Hereinafter, an embodiment in which the air conditioner according to the present invention is applied to a ceiling-embedded air conditioner will be described with reference to the drawings. The present invention is not limited to the following embodiments, and can be variously modified without departing from the gist of the present invention. In addition, the present invention includes all combinations of configurations that can be combined among the configurations shown in the following embodiments. Further, the air conditioner shown in the drawings shows an example of a device to which the air conditioner of the present invention is applied, and the device to which the present invention is applied is not limited by the air conditioner shown in the drawings. .. Further, in each figure, those having the same reference numerals are the same or equivalent thereof, which are common in the entire text of the specification.

Embodiment.
FIG. 1 is a perspective view of the air conditioner 100 according to the embodiment. FIG. 2 is a side view of the air conditioner 100 according to the embodiment. The air conditioner 100 of the present embodiment is an indoor unit embedded in the ceiling of a room to be air-conditioned. The air conditioner 100 has a blower unit 1, a heat exchanger unit 4, and a connection flange 60 for connecting the blower unit 1 and the heat exchanger unit 4. Air is supplied from the blower unit 1 to the heat exchanger unit 4 via the connection flange 60, and the air supplied to the heat exchanger unit 4 is heated or cooled by the heat exchanger unit 4 and supplied to the air-conditioned space. Will be done. The Y direction shown in FIGS. 1 and 2 coincides with the direction in which air flows in the air conditioner 100.

The blower unit 1 has a first housing 10. The first housing 10 includes an upper plate 11, a bottom plate 12, a facing plate 13 facing the heat exchanger unit 4, a pair of

side plates

14a and 14b for vertically connecting the upper plate 11 and the bottom plate 12, and ends. It has a plate 15. The first housing 10 having a substantially rectangular parallelepiped shape is formed by the upper plate 11, the bottom plate 12, the facing plate 13, the

side plates

14a and 14b, and the end plate 15. A suction port 16 is formed in the end plate 15. The suction port 16 is an inlet for air into the first housing 10. The same number of suction ports 16 as the number of blowers 20 housed inside the first housing 10 are provided, and in the present embodiment, there are two suction ports 16. A suction port flange 17 is provided on the outer peripheral edge of the suction port 16 so as to protrude from the end plate 15. The suction port flange 17 rectifies the air flowing into the suction port 16. When the duct is connected to the suction port 16, the duct is attached to the suction port flange 17.

The heat exchanger unit 4 has a second housing 40. The second housing 40 includes a pair of

side plates

44a and 44b (see FIG. 9) that vertically connect the top plate 41, the bottom plate 42, the facing plate 43 facing the blower unit 1, and the top plate 41 and the bottom plate 42. ) And the end plate 45. The upper plate 41, the bottom plate 42, the facing plate 43, the

side plates

44a and 44b, and the end plate 45 constitute a second housing 40 having a substantially rectangular parallelepiped shape. The end plate 45 is formed with an outlet 47 shown in FIG. 6, which will be described later. The air outlet 47 is an outlet for air from the second housing 40. An outlet flange f protruding from the end plate 45 is provided on the outer peripheral edge of the outlet 47. The outlet flange 48 rectifies the air flowing out from the outlet 47. When the duct is connected to the outlet 47, the duct is attached to the outlet flange 48. The refrigerant pipe 52 projects from the side plate 44a of the second housing 40. The refrigerant pipe 52 constitutes a part of the refrigeration circuit, and is a pipe through which the refrigerant circulating in the refrigeration circuit flows in and out of the heat exchanger 50 described later in the second housing 40. The side plate 44a is provided with a drain port 53 for discharging the condensed water generated in the second housing 40 to the outside of the second housing 40.

The connection flange 60 shown in FIG. 2 is a frame-shaped member that connects the first housing 10 of the blower unit 1 and the second housing 40 of the heat exchanger unit 4 so as to be able to ventilate. The connection flange 60 of the present embodiment has a substantially square frame shape, and has an upper plate 61 and a bottom plate 62. One end of the connection flange 60 is connected to the facing plate 13 of the first housing 10, and the other end of the connecting flange 60 is connected to the facing plate 43 of the second housing 40. The upper surface of the upper plate 61 of the connection flange 60 is located at a position lower than the upper surface of the upper plate 11 of the first housing 10 and lower than the upper surface of the upper plate 41 of the second housing 40.

The air conditioner 100 is suspended from the ceiling or the like by using hanging bolts screwed to the hanging bracket 81 and the hanging bracket 82 so that the Z direction in FIG. 1 is upward. The air conditioner 100 includes a hanging metal fitting 81 provided on each of the

side plates

14a and 14b of the blower unit 1 and a hanging metal fitting 82 provided on each of the

side plates

44a and 44b (see FIG. 9) of the heat exchanger unit 4. It is a so-called four-point suspension that is suspended by.

FIG. 3 is a perspective view of a state in which the connection flange 60 is attached to the heat exchanger unit 4 according to the embodiment. An introduction port 46 is formed in the facing plate 43 of the second housing 40. The introduction port 46 is an inlet for air into the second housing 40 of the heat exchanger unit 4. A heat exchanger 50 and a drain pan 51 arranged under the heat exchanger 50 are provided in the second housing 40. The heat exchanger 50 exchanges heat between the refrigerant flowing in from the refrigerant pipe 52 and air to generate conditioned air. The drain pan 51 collects the condensed water generated on the surface of the heat exchanger 50 and dropped from the heat exchanger 50. The drain pan 51 is installed so that the outer surface of the drain pan 51 comes into contact with the lower portion of the inner surface of the second housing 40. The drain pan 51 communicates with the drain port 53, and the condensed water in the drain pan 51 is discharged to the outside of the second housing 40 through the drain port 53.

A connection flange 60 is attached to the outer peripheral portion of the introduction port 46 of the facing plate 43. The connection flange 60 is a substantially square frame-shaped member extending in the Y direction of FIG. In FIG. 3, the portions of the connection flange 60 that connect the top plate 61 and the bottom plate 62 in the Z direction are shown as

side plates

63a and 63b. The inside of the connection flange 60 functions as an air flow path toward the introduction port 46 of the second housing 40.

A guide 71 is provided inside the connection flange 60. The structure of the guide 71 will be described later, but the guide 71 has a function of rectifying the air sent from the blower unit 1. The guide 71 is a flat plate-shaped member arranged so that the elongated direction is along the X direction. The first partition plate 72 extends downward from one end of the guide 71 in the X direction, and the second partition plate 73 extends downward from the other end. The lower ends of the first partition plate 72 and the second partition plate 73 are in contact with the upper surface of the bottom plate 62 of the connection flange 60. The guide 71, the first partition plate 72, the second partition plate 73, and the bottom plate 62 form a generally square frame-shaped flow path.

FIG. 4 is a perspective view of a state in which the connection flange 60 is attached to the blower unit 1 according to the embodiment. FIG. 5 is an exploded perspective view of a state in which the connection flange 60 is removed from FIG. An outlet 18 is formed on the facing plate 13 of the first housing 10. The outflow port 18 is an outlet for air from the first housing 10 of the blower unit 1. The number of outlets 18 is the same as that of the blowers 20 described later, which are housed inside the first housing 10, and in the present embodiment, there are two outlets 18. A guide 71 is arranged along the upper edge of the outlet 18. Further, among the edges extending along the Z direction of the outlet 18, the first partition plate 72 is arranged along the edge near the center of the first housing 10 in the X direction, and is close to the outside of the first housing 10. A second partition plate 73 is arranged along the edge. The connection flange 60 is attached to the facing plate 13 of the first housing 10 so that the outlet 18 is located inside the connection flange 60.

FIG. 6 is a diagram illustrating a ZZ cross section of the air conditioner 100 according to the embodiment through the suction port 16, the outlet 18, and the outlet 47. The heat exchanger 50 is installed in the second housing 40 in a direction inclined with respect to the Z direction. Specifically, the heat exchanger 50 is arranged so that the upper end is located on the upstream side of the air flow from the lower end. The lower end of the heat exchanger 50 is placed on the drain pan 51.

A blower 20 is provided in the first housing 10 of the blower unit 1. The blower 20 is configured such that a centrifugal fan 25 is housed in a scroll casing 21. The scroll casing 21 is installed so that the winding start portion 22, the tongue portion 24 extending from the winding start portion 22 to the downstream side of the air flow, and the winding end portion 23 are located on the upstream side of the outlet 18. The end of the tongue 24 on the downstream side of the air flow is connected to the upper edge of the outlet 18, and the winding end 23 is connected to the lower edge of the outlet 18. The tongue portion 24 has a curve that rises toward the downstream side of the air flow. The winding end portion 23 rises substantially linearly toward the downstream side of the air flow.

The upper plate 61 of the connection flange 60 of the present embodiment extends substantially straight along the Y direction. On the other hand, the bottom plate 62 of the connection flange 60 is inclined so that the upper surface thereof rises from the outlet 18 toward the introduction port 46. More specifically, the bottom plate 62 extends along an extension of the winding end 23 of the scroll casing 21. The bottom plate 62 has a function of rectifying the air guided by the winding end portion 23 of the scroll casing 21. That is, the bottom plate 62 of the connection flange 60 exhibits the same function as the winding end portion 23 of the scroll casing 21, and contributes to the performance improvement of the blower 20. Since the bottom plate 62 of the connection flange 60 functions as a part of the scroll casing 21, it is possible to prevent the scroll casing 21 from becoming longer and the scroll casing 21 from becoming larger in the Y direction.

The length of the connection flange 60 in the Y direction, that is, the distance between the first housing 10 of the blower unit 1 and the second housing 40 of the heat exchanger unit 4 is referred to as the length L1. The length L1 of the connection flange 60 is preferably about 50 mm to 100 mm, and can be, for example, 70 mm. The connection flange 60 also has the function of the scroll casing 21, and the longer the connection flange 60, the higher the rectifying effect of the air sent from the blower 20. On the other hand, when the connecting flange 60 becomes long, the connecting flange 60 tends to bend downward when the air conditioner 100 is suspended at four points. By setting the length L1 of the connection flange 60 to about 50 mm to 100 mm, preferably about 70 mm, the connection flange 60 can exhibit the same function as the scroll casing 21 while suppressing the deflection of the connection flange 60. ..

A guide 71 is connected to the downstream end of the air flow of the tongue portion 24. The guide 71 rises substantially straight along the Y direction.

FIG. 7 is a diagram illustrating a guide 71 according to the embodiment. In FIG. 7, the inclination angle of the guide 71 with respect to the Y direction is represented by an angle θ. When the air conditioner 100 is installed so that the Y direction is horizontal, it can be said that the angle θ is the inclination angle of the guide 71 with respect to the horizontal. It is desirable that the angle θ is the same as or larger than the inclination angle of the bottom plate 62 of the connection flange 60 shown in FIG. 6 with respect to the Y direction. By doing so, the length of the flow path formed between the guide 71 and the bottom plate 62 in the Z direction does not decrease toward the downstream side of the air flow. Then, deterioration of the shaft output of the motor that drives the blower 20 can be suppressed. The angle θ is preferably about 30 °. However, the angle θ is not limited to 30 °.

Further, in FIG. 7, the length of the guide 71 in the Y direction is shown as the length L2. The guide 71 contributes to the improvement of the shaft output of the motor that drives the blower 20. The longer the length L2 of the guide 71, the better the shaft output of the motor. On the other hand, if the length L2 of the guide 71 is longer than the length L1 of the connection flange 60 shown in FIG. 6, it is difficult to secure the installation location of the guide 71 protruding from the connection flange 60. Therefore, in the present embodiment, the length L2 of the guide 71 is the same as the length L1 of the connection flange 60 shown in FIG. By doing so, the guide 71 can be accommodated in the connection flange 60.

FIG. 8 is a diagram illustrating an example of the operation of the guide 71 according to the embodiment. The vertical axis of FIG. 8 is the power consumption [W] of the motor that drives the blower 20. The horizontal axis of FIG. 8 is the ratio of the length L2 of the guide 71 to the length L1 of the connecting flange 60. When the horizontal axis is 1, it indicates that the length L1 and the length L2 are the same. FIG. 8 shows the change in power consumption when the motor is operated at the rated shaft output Lt and the ratio of the length L2 to the length L1 is different. Further, FIG. 8 is a graph when the length L1 of the connection flange 60 is 71 mm. As shown in FIG. 8, it can be seen that the shaft output increases as the ratio of the length L2 to the length L1 decreases under the condition that the angle θ of the guide 71 is 30 °. Comparing the case where the horizontal axis is 0, that is, the case where there is no guide 71, and the case where the horizontal axis is 1, that is, the case where the guide 71 having the same length as the connection flange 60 is provided, the latter consumes 6.4% as compared with the former. It was shown to have the effect of reducing power consumption. In this way, by making the length L2 of the guide 71 the same as the length L1 of the connecting flange 60, the power consumption is higher than when the length L2 of the guide 71 is shorter than the length L1 of the connecting flange 60. Can be reduced.

FIG. 9 is a diagram illustrating an XY cross section of the air conditioner 100 according to the embodiment through the scroll casing 21. Two blowers 20 are arranged along the X direction in the first housing 10 of the blower unit 1. The first partition plate 72 extends from one end of the X-direction end of the scroll casing 21 toward the heat exchanger unit 4. The first partition plate 72 has a function of suppressing the air sent from the adjacent blowers 20 from merging with each other. Further, the second partition plate 73 forms an air flow path between the second partition plate 73 and the first partition plate 72. The first partition plate 72 and the second partition plate 73 suppress the turbulence of the air sent from the blower 20 in the X direction.

FIG. 10 is a diagram for explaining the wind speed distribution of the blower unit 1 and its downstream side according to the embodiment. FIG. 11 is a diagram for explaining the wind speed distribution according to the comparative example. FIG. 11 shows a state in which the guide 71, the first partition plate 72, and the second partition plate 73 are removed from FIG. 10. In FIGS. 10 and 11, the figure on the left side of the paper is a view of the fan 25 in the same direction as in FIG. 6, and the figure on the right side of the paper is a view of the fan 25 in the same direction as in FIG. The operations of the guide 71, the first partition plate 72, and the second partition plate 73 will be described with reference to FIGS. 10 and 11.

First, as shown in the figure on the left side of FIG. 11, when the guide 71 is not provided, the air sent out from the scroll casing 21 becomes a vortex at the position indicated by the symbol F3 on the downstream side of the tongue portion 24 and stays there. Therefore, if the guide 71 is not provided, a pressure loss will occur. On the other hand, as shown in the figure on the left side of FIG. 10, when the guide 71 is provided, the air sent out from the scroll casing 21 flows linearly along the guide 71. Unlike the position of reference numeral F3 in FIG. 11, no vortex is generated at the position indicated by reference numeral F1 in FIG. 10, and air does not substantially flow. As can be seen by comparing the drawings on the left side with FIGS. 10 and 11, the range in which air actually flows on the downstream side of the scroll casing 21 is narrower in FIG. That is, in the present embodiment, it can be seen that the pressure loss is suppressed by the guide 71.

Further, as shown in the figure on the right side of FIG. 11, when the first partition plate 72 and the second partition plate 73 are not provided, the width of the air flowing out from the downstream end of the scroll casing 21 is once narrowed. It has spread. In the region indicated by reference numeral F4 in FIG. 11, air is separated from the scroll casing 21 and is contracted. On the other hand, as shown in the figure on the right side of FIG. 10, when the first partition plate 72 and the second partition plate 73 are provided, the air sent out from the scroll casing 21 is the first as shown by reference numeral F2. It flows linearly between the partition plate 72 and the second partition plate 73, and the flow path width is not reduced. As described above, in the present embodiment, by providing the first partition plate 72 and the second partition plate 73, the contraction flow seen in FIG. 11 can be eliminated and the pressure loss can be suppressed. By suppressing the pressure loss, the power consumption of the motor that drives the blower 20 can be reduced.

Further, the first partition plate 72 provided between the adjacent scroll casings 21 suppresses the air sent from the different scroll casings 21 from merging in the vicinity of the downstream end of the scroll casings 21. By doing so, it is possible to suppress the pressure loss due to the merging of air.

In this way, the pressure loss is suppressed by the guide 71, the first partition plate 72, or the second partition plate 73, so that the power consumption of the motor that drives the blower 20 can be reduced. Further, as shown in FIG. 10, according to the present embodiment, the wind speed distribution of the air after flowing out of the scroll casing 21 can be made uniform as compared with FIG.

FIG. 12 is an enlarged view of the vicinity of the second partition plate 73 of FIG. The rotation speed of the fan 25 of the blower 20 is controlled based on the difference between the temperature of the conditioned air generated by the heat exchanger unit 4 and the set temperature. A temperature sensor that detects the temperature of the harmonized air generated by the heat exchanger unit 4 is installed in the heat exchanger unit 4, and the detection signal of the temperature sensor is a blower 20 provided in the blower unit 1. It is sent to the control device that controls the number of rotations of the above via the electrical wiring 55. As shown in FIG. 12, the electric wiring 55 extending from the second housing 40 of the heat exchanger unit 4 to the first housing 10 of the blower unit 1 passes through the connection flange 60. In the connection flange 60, a portion where the electric wiring 55 is arranged and the outlet 18 are partitioned by a second partition plate 73. That is, the air sent out from the blower 20 and flowing into the connection flange 60 from the outlet 18 is guided by the second partition plate 73 and proceeds, and does not enter or hardly enters the region where the electric wiring 55 is arranged. .. Therefore, it is possible to suppress the electric wiring 55 from shaking due to the air from the blower 20 being blown to the electric wiring 55. When the electric wiring 55 is greatly shaken by the flow of air, the electric wiring 55 may come into contact with a member such as the connection flange 60 to generate an abnormal noise, but according to the present embodiment, such an abnormal noise can be suppressed.

FIG. 13 is a side view of the air conditioner 100 in a state where the connection flange 60 and the blower unit 1 according to the embodiment are integrated and removed from the heat exchanger unit 4. FIG. 14 is a side view of the air conditioner 100 in a state where the connection flange 60 and the heat exchanger unit 4 according to the embodiment are integrally removed from the blower unit 1. The connection flange 60 of the present embodiment is separably connected to the first housing 10 of the blower unit 1 at one end in the Y direction, and is separably connected to the heat exchanger unit 4 at the other end. It is connected to the second housing 40. The connection between the connection flange 60 and the first housing 10 and the connection between the connection flange 60 and the second housing 40 are realized by using, for example, screws, claws or hooks and engagement holes.

When the air conditioner 100 is installed, it is carried from the room to the ceiling or attic through the inspection port formed on the ceiling. The inspection port on the ceiling is not necessarily large enough for the air conditioner 100 to pass through as a unit. According to this embodiment, the connection flange 60 is separable from the blower unit 1 and the heat exchanger unit 4. Therefore, each of the separated blower unit 1 and heat exchanger unit 4 as shown in FIG. 13 or 14 can be separately carried into the ceiling or attic from the inspection port.

Further, as shown in FIG. 14, even when the connection flange 60 is attached to the second housing 40, the guide 71 and the second partition plate 73 are in a state of being attached to the first housing 10. Although not shown in FIG. 14, the first partition plate 72 is also attached to the first housing 10. Preferably, the guide 71, the first partition plate 72 and the second partition plate 73 are attached to the first housing 10 so as not to be easily removed by the user. If the mounting angles of the guide 71, the first partition plate 72, and the second partition plate 73 with respect to the first housing 10 change, the action shown in FIG. 10 may be impaired. Therefore, it is desirable to make it difficult to remove. It becomes easier to maintain the action of.

In FIGS. 13 and 14, the center of gravity of the blower unit 1 is indicated by reference numeral G1, and the center of gravity of the heat exchanger unit 4 is indicated by reference numeral G2. The

side plates

14a and 44a extend along a first direction in which the first housing 10 and the second housing 40 face each other. Here, in the present embodiment, the first direction is shown as the Y direction. Of the ends of the side plates 14a in the Y direction, if the end closer to the connection flange 60 is the first end and the end farther away is the second end, the hanging bracket used for suspending the blower unit 1. The 81 is provided near the second end portion closer to the center of gravity G1. Further, if the end portion of the side plate 44a in the Y direction on the side closer to the connection flange 60 is the first end portion and the end portion on the far side is the second end portion, the heat exchanger unit 4 can be suspended. The hanging metal fitting 82 used is provided near the first end portion closer to the center of gravity G2. That is, the hanging metal fitting 82 of the heat exchanger unit 4 is provided at a position diagonally above the center of gravity G2 and close to the connecting flange 60 in a side view. By bringing the hanging bracket 81 and the center of gravity G1 close to each other and the hanging bracket 82 and the center of gravity G2 close to each other, the force that the blower unit 1 and the heat exchanger unit 4 try to rotate downward when suspended by the hanging bolt is suppressed. can do. For example, if the hanging bracket 82 is provided at the end of the side plate 44a closer to the end plate 45, the heat exchanger unit 4 is subjected to a force that rotates counterclockwise. Then, a force is applied to the connection portion between the connection flange 60 and the heat exchanger unit 4, and the connection flange 60 may bend or the connection flange 60 may come off from the heat exchanger unit 4. However, by being suspended by the hanging metal fittings 82 arranged as in the present embodiment, the downward deflection of the connection flange 60 can be suppressed, and the separation of the connection flange 60 from the heat exchanger unit 4 can be suppressed. it can.

FIG. 15 is a diagram for explaining the first reinforcing plate 83 and the second reinforcing plate 84 according to the embodiment. FIG. 15 shows only the main part of the second housing 40 of the heat exchanger unit 4. In FIG. 15, the arrangement of the configuration that is arranged inside the second housing 40 and is not visible from the outside is shown by a broken line. Here, as shown in FIGS. 13 and 14, a downward force is applied to the connection flange 60 and the heat exchanger unit 4 in the vicinity thereof because the center of gravity G2 is close to the connection flange 60. Specifically, a force that tends to rotate counterclockwise is applied around the area where the hanging metal fitting 82 is arranged. Therefore, as shown in FIG. 15, the first reinforcing plate 83 and the second reinforcing plate 84 may be provided. The first reinforcing plate 83 and the second reinforcing plate 84 are made of, for example, a metal plate member, and are lined with a second housing 40. More specifically, the first reinforcing plate 83 and the second reinforcing plate 84 are provided across the side plate 44a and the facing plate 43 along the inner surface of the angle formed by the side plate 44a and the facing plate 43. The first reinforcing plate 83 and the second reinforcing plate 84 are L-shaped. The first reinforcing plate 83 is provided above the center of the second housing 40 in the Z direction, and the second reinforcing plate 84 is provided below the center of the second housing 40 in the Z direction. Similar first reinforcing plates 83 and second reinforcing plates 84 are also provided on the side plates 44b. Even if the above-mentioned force for rotating counterclockwise is applied, the air conditioner 100 is affected by the action of the corners straddling the side plates 44a and the facing plate 43 of the first reinforcing plate 83 and the second reinforcing plate 84. When suspended, the downward deflection of the connection flange 60 is suppressed. Further, the separation of the connection flange 60 from the heat exchanger unit 4 is suppressed.

As shown in FIG. 15, the second reinforcing plate 84 may be provided so as to overlap the drain pan 51 in the Z direction. In this case, the second reinforcing plate 84 is sandwiched between the inner surface of the second housing 40 and the drain pan 51. By interposing the second reinforcing plate 84 between the drain pan 51 and the second housing 40, the gap between the drain pan 51 and the second housing 40 is reduced by the thickness of the second reinforcing plate 84, and the drain pan 51 Can be suppressed from rising. Although FIG. 15 shows an example in which both the first reinforcing plate 83 and the second reinforcing plate 84 are provided, only one of them may be provided.

FIG. 16 is a diagram illustrating a state in which the air conditioner 100 according to the embodiment is installed in the attic of the truss structure. FIG. 17 is a diagram illustrating a state in which the blower unit 1 is removed from FIG. FIG. 18 is a front view of the connection flange 60 in the Y direction. As shown in FIGS. 16 to 18, a plurality of triangular support members 200 are installed on the attic of the truss structure with a gap in the Y direction. The width of the support member 200 in the Y direction is about 40 mm. The distance between the adjacent support members 200 and the support members 200 in the Y direction becomes smaller as the house becomes smaller, and some of them are 500 mm or less. A blower unit 1 and a heat exchanger unit 4 are installed between the support member 200 and the support member 200 constituting such a truss structure.

As shown in FIG. 2, the upper surface of the connection flange 60 connecting the blower unit 1 and the heat exchanger unit 4 is located lower than the upper surface of the blower unit 1 and the upper surface of the heat exchanger unit 4. When the air conditioner 100 of FIG. 2 is viewed with a focus on the upper surface, it can be said that a recess is formed on the upper surface at the portion of the connection flange 60. The diagonally extending support member 200 constituting the truss structure is arranged in a recess formed on the connecting flange 60, and the support member 200 does not interfere with the blower unit 1 or the heat exchanger unit 4. With reference to FIG. 17, it can be seen that a part of the support member 200 is arranged on the upper side of the connection flange 60 and lower than the upper surface of the heat exchanger unit 4.

As described above, the air conditioner 100 of the present embodiment has a blower unit 1 having a blower 20 and a first housing 10 for accommodating the blower 20. Further, the air conditioner 100 includes a heat exchanger 50 and a heat exchanger unit 4 having a second housing 40 for accommodating the heat exchanger 50. Further, the air conditioner 100 includes a frame-shaped connecting flange 60 for connecting the first housing 10 and the second housing 40. The first housing 10 has a facing plate 13 facing the second housing 40 and having an outlet 18 formed therein, and the second housing 40 faces the first housing 10 and has an introduction port 46 formed therein. It has a facing plate 43. The connection flange 60 connects the facing plate 13 and the facing plate 43, and the upper surface of the connecting flange 60 is located at a position lower than the upper surface of the first housing 10 and the upper surface of the second housing 40. Therefore, the air conditioner 100 is easily installed in the attic of the truss structure.

Further, the blower unit 1 or the heat exchanger unit 4 is arranged between the support members 200 adjacent to each other in the Y direction constituting the truss structure. When the distance between the support members 200 is short, it becomes difficult to secure the scroll length of the scroll casing 21 of the blower unit 1 when the blower unit 1 is to be accommodated between the support members 200. According to the present embodiment, the bottom plate 62 of the connecting flange 60 extends along the extension line of the winding end portion of the scroll casing 21. Therefore, the bottom plate 62 exerts the same function as the scroll casing 21, and even when it is difficult to secure the scroll length of the scroll casing 21, rectified air can be supplied to the heat exchanger unit 4. Further, in the present embodiment, a guide 71 provided on the upper edge of the outlet 18 and located in the connection flange 60 is provided. The guide 71 extends along an extension of the tongue portion 24 of the scroll casing 21. Therefore, the guide 71 exerts the same function as the scroll casing 21, and even when it is difficult to secure the scroll length of the scroll casing 21, the rectified air can be supplied to the heat exchanger unit 4.

The length of the connection flange 60 in the Y direction is 50 mm to 100 mm. Therefore, the blower unit 1 and the heat exchanger unit 4 integrated by the connection flange 60 can be suspended at four points. For example, suppose that the blower unit 1 and the heat exchanger unit 4 are connected by a flexible duct instead of the connection flange 60. Then, the degree of freedom in installing the blower unit 1 and the heat exchanger unit 4 is increased, but it is necessary to suspend each of the blower unit 1 and the heat exchanger unit 4 at four points. As a whole, hanging work is required at eight points, which increases the amount of hanging work. However, according to the present embodiment, it is possible to suppress an increase in the amount of construction work for suspending the air conditioner 100.

The upper plate 11 and the bottom plate 12 constituting the first housing 10 of the blower unit 1 can be screwed to the facing plate 13, the side plate 14a and the side plate 14b, and the end plate 15. In this case, the upper plate 11 may be screwed so that the screw head is located on the outer surface, that is, the upper surface of the upper plate 11. Further, the bottom plate 12 may be screwed so that the screw heads are located on the outer surface, that is, the lower surface of the bottom plate 12. In this way, the upper plate 11 of the first housing 10 can be removed by removing the screw from the top of the blower unit 1, and the bottom plate 12 of the first housing 10 can be removed by removing the screw from the bottom of the blower unit 1. Can be removed. The top plate 11 can be removed from above, and the bottom plate 12 can be removed from the top. Therefore, at the time of maintenance, if the worker can enter the attic or the ceiling, the upper plate 11 can be removed from above for maintenance. Further, when the worker cannot enter the attic or the ceiling, the blower unit 1 can be maintained by removing the bottom plate 12 from below through the inspection port formed on the ceiling. The same applies to the upper plate 41 and the bottom plate 42 constituting the second housing 40 of the heat exchanger unit 4. As described above, according to the present embodiment, the degree of freedom in the maintenance work of the air conditioner 100 can be improved.

1 Blower unit, 4 Heat exchanger unit, 10 1st casing, 11 Top plate, 12 Bottom plate, 13 Opposing plate, 14a side plate, 14b Side plate, 15 End plate, 16 Suction port, 17 Suction port flange, 18 Outlet, 20 blower, 21 scroll casing, 22 winding start part, 23 winding end part, 24 tongue part, 25 fan, 40 second housing, 41 top plate, 42 bottom plate, 43 facing plate, 44a side plate, 44b side plate, 45 end plate , 46 inlet, 47 outlet, 48 outlet flange, 50 heat exchanger, 51 drain pan, 52 refrigerant piping, 53 drain outlet, 55 electrical wiring, 60 connection flange, 61 top plate, 62 bottom plate, 63a side plate, 63b side plate , 71 guide, 72 1st partition plate, 73 2nd partition plate, 81 hanging bracket, 82 hanging bracket, 83 1st reinforcing plate, 84 2nd reinforcing plate, 100 air conditioner, 200 support material.

Claims

A blower unit having a blower and a first housing for accommodating the blower, and
A heat exchanger unit having a heat exchanger and a second housing for accommodating the heat exchanger, and
A frame-shaped connecting flange for connecting the first housing and the second housing is provided.
The first housing has a facing plate facing the second housing and having an outlet formed therein.
The second housing has a facing plate facing the first housing and having an introduction port formed therein.
The connection flange connects the facing plate of the first housing and the facing plate of the second housing, and the upper surface of the connecting flange is the upper surface of the first housing and the second housing. An air conditioner located below the top surface.
The blower unit has a scroll casing containing a fan.
The air conditioner according to claim 1, wherein the bottom plate of the connection flange extends along an extension line of the winding end portion of the scroll casing.
A guide provided on the upper edge of the outlet and located within the connecting flange.
The air conditioner according to claim 2, wherein the guide extends along an extension line of the tongue portion of the scroll casing.
The blower unit is provided with a plurality of the blowers.
The facing plate of the first housing is formed with the same number of outlets as the blower.
The air conditioner according to any one of claims 1 to 3, wherein a first partition plate for partitioning between adjacent outlets is provided.
An electric wiring that is connected to the inside of the first housing and the inside of the second housing through the connection flange is provided.
The air conditioner according to any one of claims 1 to 4, wherein a second partition plate for partitioning the electrical wiring and the outlet is provided in the connection flange.
The air conditioner according to any one of claims 1 to 5, wherein the connecting flange is detachably attached to both the first housing and the second housing.
The second housing has a side plate extending vertically along a first direction facing the first housing.
In the first direction, assuming that the end portion of the side plate on the side closer to the connection flange is the first end portion and the end portion on the far side is the second end portion, the first end portion of the side plate is more than the second end portion. The air conditioner according to any one of claims 1 to 6, wherein a hanging metal fitting is provided at a position close to the end portion.
The air conditioner according to claim 7, wherein the center of gravity of the heat exchanger unit is located closer to the first end portion than the second end portion in the first direction.
The air conditioner according to claim 7 or 8, wherein a first reinforcing plate is provided on the inner surface of an angle formed by the side plate and the facing plate.
The heat exchanger unit is provided with a drain pan at the lower part in the second housing.
The air conditioner according to any one of claims 7 to 9, wherein a second reinforcing plate is provided between the inner surface of the angle formed by the side plate and the facing plate and the drain pan.
The first housing has an upper plate and a bottom plate forming an upper surface, and has a top plate.
The second housing has an upper plate and a bottom plate constituting the upper surface, and has a top plate.
The upper plate of the first housing, the upper plate of the second housing, the bottom plate of the first housing, and the bottom plate of the second housing are screwed so that the screw heads are located on the outer surface. The air conditioner according to any one of claims 1 to 10, which is fastened.
The air conditioner according to any one of claims 1 to 11, wherein the length of the connecting flange is 50 mm to 100 mm.