JPH11294819A - Heat exchange unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve heat exchange efficiency high in electrothermal area/volume, by equipping a heat exchange unit with a heat exchange element consisting of a single heat conductive sheet corrugated in cross section within a thin rectangularly parallelepipedic casing, accommodating partition material at the crest of each wavy pattern of this sheet, forming air ducts before and behind the partition material, and letting counterflows flow with the sheet between. SOLUTION: A heat exchange element composed of a pair of divisions 14 and 15 is equipped with a single heat conductive sheet 18 corrugated in cross section having a crest 21 and a trough 36, a frame 19, and a pair of partition materials along the crest 21 of the wavy pattern. Each partition material 20 is made of a thin plate such as an aluminum foil or the like, and it partitions off air ducts 22 and 23 between itself and the face of the heat conductive sheet 18, and it is provided with inlets 24 and 25 and outlets 26 and 27. Air flowing in each air duct 22 and 23 is arranged to form a counterflow against each other when flowing along the partition material 20 so as to raise the heat exchange efficiency. The divisions 14 and 15 have space 32 and 33 leading to the inlet 25 and outlet 27 of the air duct 23, and are provided with openings 30, 31, 34, and 35 leading to outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange unit for exchanging heat between a pair of airflows.

[0002]

2. Description of the Related Art As a conventional cross-flow type heat exchange element, for example, an element in which a large number of square-shaped heat transfer plates and corrugated plates are alternately alternately arranged and laminated is generally used. It has a rectangular parallelepiped shape with a square cross section. When a heat exchange unit including such a heat exchange element is arranged, for example, behind a ceiling, the heat exchange element having a rectangular parallelepiped shape is arranged so that a diagonal line of a cross section thereof is substantially along the vertical direction due to securing an air path. Will be. Therefore, the height of the heat exchange unit inevitably increases, and it is difficult to arrange the heat exchange unit in a space above the ceiling where the height space is narrow. In particular, when it is desired to increase the square area of the heat transfer plate for the purpose of obtaining a large heat exchange capacity with a large air flow, the height of the heat exchange unit is increased, and it is very difficult to arrange the heat exchange unit in the space above the ceiling.

[0003] A similar problem arises when the heat exchange unit is to be arranged along a wall surface in a room. This is because the amount of the heat exchange unit disposed in the room that projects toward the room side must be as small as possible.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a heat exchange unit that can achieve high heat exchange efficiency while being thin, and is suitable for installation on a ceiling surface or an indoor wall surface.

[0004]

Means for Solving the Problems As means for solving the problems to achieve the above object, the aspect of the invention described in claim 1 is as follows.
A casing having a thin rectangular parallelepiped shape in one direction and having a wide surface arranged in parallel to an installation surface formed of a wall surface or a ceiling surface is provided. A heat exchange element including a heat transfer sheet, and a frame holding the periphery of the heat transfer sheet, and a surface of the heat transfer sheet that traverses the corrugations along both tops of the corrugations on both sides of the heat transfer sheet. And a pair of partitioning materials for partitioning the air path between the partitioning member and the partitioning member. Each of the partitioning members is disposed at an intermediate portion in a direction in which the top of the corrugation extends. A road is provided with an entrance and an exit.
In this embodiment, in a very thin thickness space obtained by adding the thickness of the pair of partition members to the corrugated height of the single heat transfer sheet, the inlet and outlet are included on both sides of the heat transfer sheet using each partition member. Each wind path can be partitioned at low cost.

[0005] Further, by flowing a pair of opposed flows sandwiching the heat transfer sheet through each of the air passages extending along the direction in which the top of the corrugation extends, a heat exchange efficiency superior to the conventional orthogonal heat exchange element is obtained. Obtainable. That is, it has been found that when the value obtained by dividing the heat transfer area by the volume is equal to that of the conventional orthogonal type, the heat exchange efficiency can be improved by, for example, 3%. In order to obtain a large heat exchange capacity, a thin rectangular parallelepiped having a longer length in the direction in which the top of the waveform extends or in the direction crossing the top of the waveform may be used. A thin rectangular parallelepiped heat exchange element is suitable for installation on a wall surface or a ceiling. It is preferable to increase the length along the latter direction in that the pressure loss does not decrease.

Since the unit can be made thin by housing the thin heat exchange element in the casing, it can be arranged in the space above the ceiling along the ceiling surface or in the room along the wall surface. Suitable for. According to a second aspect of the present invention, in the first aspect, the casing is formed by combining a pair of divided bodies sandwiching the heat exchange element in front and rear in the one direction. It is.

In this case, the air passages can be easily formed on both sides of the heat exchange element by the divided bodies. In addition, assembly of the unit is facilitated. Further, maintenance such as attachment and detachment of the heat exchange element from the casing becomes easy. According to a third aspect of the present invention, in the first or second aspect, a plurality of the casings are provided and arranged along the installation surface.

This embodiment has the following effects. In other words, the space above the ceiling is small but wide. On the other hand, also in the case of disposing along the wall surface in the room, the amount of protrusion to the indoor side cannot be so large, but there is a spread along the wall surface. In this aspect, by arranging a plurality of thin casings each accommodating the heat exchange element along the installation surface, it is possible to realize a large-capacity unit (in terms of air volume and heat exchange capacity) even when thin.

According to a fourth aspect of the present invention, in the third aspect, each of the casings has a pair of openings respectively communicating with an inlet and an outlet of each air passage on both sides of the heat transfer sheet. Is what you do. In this aspect, if each pair of openings communicating with each air path in the casing is provided,
The air paths of the arranged casings can be easily connected by, for example, short piping.

A fifth aspect of the invention is characterized in that, in the fourth aspect, all of the openings face in the same direction. In this aspect, the openings can be connected more easily. According to a sixth aspect of the present invention, in the fifth aspect, a connection path that connects adjacent openings of adjacent casings to each other is further provided so as to connect the air paths on the same side of each casing in series. It is characterized by the following. In this aspect, the air paths of the casings can be connected to each other with a minimum necessary connection path.

According to a seventh aspect of the present invention, in addition to the fifth aspect, the apparatus further comprises a chamber disposed along the plurality of casings, and the chambers have the same kind of openings of the casings and communicate with each other. It is characterized in that it is connected to a duct. In this aspect, since the same kind of air path of each casing can be in a parallel relationship with each other via the common chamber, air can be efficiently flowed through the air path of each casing, and the heat exchange efficiency can be increased. .

According to an eighth aspect of the present invention, in the seventh aspect, the chamber has an L-shape having a first portion disposed over a plurality of casings and a second portion orthogonal to the first portion. Characterized in that it includes the above chamber. In this aspect, for example, at the lower part of the plurality of casings, it is possible to guide the airflow that has joined the first part of the L-shaped chamber to the upper part of the casing via the second part, and The degree of freedom increases.

According to a ninth aspect of the present invention, in any one of the first to eighth aspects, the heat exchange element comprises a sensible heat exchange element for preventing passage of water vapor by the heat transfer sheet. A drain pan for receiving moisture falling from the sensible heat exchange element is arranged below the sensible heat exchange element. In this aspect, the present heat exchange element can be applied to a thin, sensible heat exchange element having excellent heat exchange efficiency, and the generated moisture can be received by the drain pan.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic perspective view of a heat exchange unit according to one embodiment of the present invention. With reference to FIG. 1, the present heat exchange unit A has a wall surface 4 on which a first unit 1, a second unit 2 and a third unit 3 are set as installation surfaces.
Are arranged side by side. All units 1, 2,
The upper portions 3 are connected to each other by a chamber 5, and the lower portions of all units 1, 2, 3 are connected to each other by a chamber 6. The chamber 6 includes a first portion 8 mounted on a floor surface 7.
And a second portion 9 orthogonal to the first portion 8 and along the side surface of the first unit 1.

An intake duct 10 and an exhaust duct 11 are connected to one end of the upper surface of the chamber 5. A supply side outlet duct 12 and an exhaust side outlet duct 13 are connected to the upper surface of the second portion 9 of the chamber 6. Referring to FIGS. 2 to 4, each unit 1, 2, 3,
The structure of will be described with reference to the first unit 1. FIG.
, The first unit 1 includes a pair of divided bodies 14 and 1
The heat exchanger element 17 is sandwiched between the divided bodies 14 and 15 from both sides to form a unit.

Referring to FIGS. 2 to 4, the heat exchange element 17 has a single heat transfer sheet 18 having a corrugated cross section having a top 21 and a valley 36, and a frame for holding the periphery of the heat transfer sheet 17. It comprises a body 19 and a pair of partition members 20 arranged on both sides of the heat transfer sheet 18 and each traversing the corrugation along the corrugated top 21. Arrows in the drawing are a first direction X in which the top 21 of the waveform extends, a second direction Y across the top 21 of the waveform, and a third direction Z in which the waveform undulates.

Each partitioning member 20 partitions air passages 22 and 23 between the respective surfaces of the heat transfer sheet 18 facing each other. Each partitioning material 20 is arranged at an intermediate portion in the direction X in which the corrugated top 21 extends. Each wind path 2 is located before and after the partitioning material 20 along the direction X in which the corrugated top 21 extends.
2, 23 inlets 24, 25 and outlets 26, 27 are provided.

On the other hand, one of the divided bodies 14 constituting the casing 16 has spaces 28 and 29 formed of concave portions communicating with the inlet 24 and the outlet 26 of the air passage 22, respectively. Further, the divided body 14 has an opening 30 for communicating the inlet 24 to the outside via the space 28, and has an opening 31 for communicating the outlet 26 to the outside via the space 29. . The opening 30 and the opening 31 are provided at diagonal positions on both end surfaces of the divided body.

The other divided body 14 has spaces 32 and 33 formed by concave portions communicating with the inlet 25 and the outlet 27 of the air passage 23, respectively. Also, the divided body 15 is
5 is an opening 3 for communicating with the outside through the space 32.
4 and an opening 35 for connecting the outlet 27 to the outside via the space 33. The opening 34 and the opening 35 are provided at diagonal positions on both end surfaces of the divided body 15.

The heat transfer sheet 18 may be formed of a material such as paper having moisture permeability, and the heat exchange element 17 may be used as a total heat exchange element, or a material having no moisture permeability such as an aluminum sheet or a resin sheet. The present heat exchange element 17 may be formed as a sensible heat exchange element. The peripheral portion of the heat transfer sheet 18 is air-tightly fixed to the inner peripheral surface of the frame 19 by, for example, bonding using hot melt or the like. The corrugated shape of the heat transfer sheet 18 may be a substantially U-shaped shape or a substantially V-shaped shape. In addition to the general U-shape, the U-shape with rounded corners,
The meaning includes the so-called U-shape. Further, the substantially V shape includes a pointed corner and a rounded one. With a substantially U-shaped waveform, a sufficient amount of air reaches the bottom of the valley 36, so that pressure loss can be reduced and heat exchange efficiency can be increased.

Since the partitioning member 20 may be a thin plate such as an aluminum foil, the thickness of the heat exchange element 17 does not become hot. In addition, the inlet and outlet of the air passages 22 and 23 can be partitioned by the partitioning material 20 with the thin shape. As shown in FIG. 3, the air flowing through each of the air passages 22 and 23 flows counter to each other when flowing along the partition member 20. Thereby, heat exchange efficiency can be improved. In particular, when the heat transfer area / volume is made equal to that of the conventional orthogonal heat exchange element, the heat exchange efficiency can be improved by about 3%.

The second unit 3 and the third unit 3 have the same configuration as the first unit 1. Next, referring to FIG. 5, which is an exploded perspective view of the heat exchange unit 1,
The chamber 5 is a box having a rectangular parallelepiped shape. The inside of the chamber 5 is partitioned by a partition plate 37 parallel to the wall surface 4 (that is, extending in the first direction X) into a supply air path 38 on the front side and an exhaust path 39 on the rear side in FIG. Have been. Also, the upper surface 5a of the chamber 5
The opening 40 connected to the intake-side suction duct 10 shown in FIG.
1 is provided.

Openings 42 connected to the openings 30 of the units 1, 2, 3 are formed on the bottom surface 5b of the chamber 5.
Are formed corresponding to the supply air passage 38. An opening 43 connected to the opening 34 of each of the units 1, 2, and 3 is formed on the bottom surface 5 b of the chamber 5 so as to correspond to the exhaust air passage 39. The L-shaped chamber 6 is also hollow, and both the first portion 8 and the second portion 9 are provided with a partition plate 44 whose interior is parallel to the wall surface 4 and a supply air passage 45 on the front side and exhaust air on the rear side in FIG. The road 46 is partitioned. On the upper surface 8 a of the first portion 8 of the chamber 6, openings 47 connected to the lower openings 31 of the units 1, 2, 3 are formed corresponding to the air supply air passages 45. , Opening 35 at the bottom of each unit 1, 2, 3
Are formed corresponding to the exhaust air passages 46. Upper surface 9 of second part 9 of chamber 6
a has an opening 49 connected to the air supply side outlet duct 12;
And an opening 50 connected to the exhaust-side outlet duct 13.

As described above, since the same type of openings are connected to each other on the same side of each unit 1, 2, 3 in the upper and lower chambers 5, 6, the air supply 51 shown by a solid line as shown in FIG. And the exhaust 52 shown by a broken line
2, 3 flow in parallel, and in each unit 1, 2, 3,
It becomes a counter flow and achieves high heat exchange efficiency. According to the present embodiment, there are the following advantages. That is, 1) in each of the heat transfer sheets 18 on both sides of the heat transfer sheet 18 in a very thin space corresponding to the height of the waveform of the single heat transfer sheet 18 plus the thickness of the pair of partition members 20, 20. Each air passage 2 including entrances 24 and 25 and exits 26 and 27
2, 23 can be partitioned at low cost. 2) By flowing a pair of opposed flows sandwiching the heat transfer sheet 18 through each of the air passages 22 and 23 extending along the direction X in which the top 21 of the waveform extends, the height is higher than the heat transfer area / volume. Heat exchange efficiency can be achieved. In order to obtain a large heat exchange capacity, the length may be increased along the direction Y crossing the top 21 of the waveform. 3) Further, the units 1, 2, 3 can be made thin by accommodating the thin heat exchange element 17 in the casing 16, so that they can be arranged along the indoor wall surface 4 as in the present embodiment, or It is very suitable to be arranged in the space above the ceiling along the ceiling surface. 4) Since the casing 16 is constituted by the pair of divided bodies 14 and 15 which sandwich the heat exchange element 17 from both sides, the divided bodies 14 and 15 easily form air paths on both sides of the heat exchange element 17. it can. Also, the units 1, 2, 3 can be easily assembled. Further, maintenance such as attachment and detachment of the heat exchange element 17 from the casing 16 becomes easy. Further, the divided bodies 14 and 15 can be shared, and the manufacturing cost can be reduced. 5) By arranging a plurality of thin casings 16 each accommodating the heat exchange element 17 along a wide installation surface such as a ceiling surface or a wall surface, even a thin type (in terms of air volume and heat exchange capacity). A large-capacity unit can be realized. 6) Since the heat exchange element 17 is removably exposed at the end face of the casing 16, it can be easily removed along the second direction Y, and can be inserted and mounted. 7) Further, since the same kind of air passages of the units 1, 2, 3 can be in a parallel relationship with each other via the common chambers 5, 6, air can be more efficiently flown through each air passage, and Exchange efficiency can be increased.

In particular, since the L-shaped chamber 6 is used, the airflow that has passed through the units 1, 2, 3 up and down is all directed upward, and the connection to the ducts 10 to 13 is exchanged with heat. This can be performed at the upper part of the unit A. This increases the degree of freedom in layout, such as being suitable for a layout placed on the floor 7. 7 and 8 show a heat exchange unit according to another embodiment of the present invention. Referring to these figures, the present embodiment is different from the above-described embodiments of FIGS. 5 and 6 mainly in FIG.
In the embodiment of FIG. 6 and the upper and lower chambers 5 and 6, air flows in parallel to the units 1, 2, and 3 in the embodiment. However, in the present embodiment, air flows in series in units of 1, 2, and 3. That is the point.

The divided body 14 constituting the casing 16 of each of the units 1, 2, 3 has openings 30, 31 at the ends on the same side. Also, the divided body 15 has openings 34, 3 at the end on the same side.
5 That is, all of the openings 30, 31, 34, and 35 face in the same direction. In addition, a connection path 53 is provided for communicating the adjacent openings 30, 31 of the adjacent units 1, 2, 3 and the openings 34, 35 with each other. Side air passages 22 and 23 are connected in series.

According to the present embodiment, similar advantages can be obtained for the above-described 1) to 6) of the embodiment of FIGS. In addition, the same kind of air paths of the arranged units 1, 2, 3 can be easily connected by, for example, a short pipe. The whole can be made small. Also, openings 30, 31,
Since all 34 and 35 face in the same direction, 30, 31
And the openings 34 and 35 can be easily connected by the short connection path 53 as described above.

Furthermore, since the adjacent openings of the adjacent units 1, 2, 3 are connected to each other, the air passages 22, 23 of each unit can be connected to each other by a connection path 53 of a minimum necessary length. The present invention is not limited to the above embodiments. For example, as a material of the heat transfer sheet 18 of the heat exchange element 17, a sensible heat exchange element may be formed by using an aluminum sheet or a resin sheet having no moisture permeability. In the case of the configuration, for example, as shown in FIG.
May be arranged and received. In this case, it is preferable to form a drain hole communicating with the drain pan 54 at the lower part of each casing 16.

In each of the above embodiments, the partition member 20
Was attached to the heat exchange element 17,
0 may be fixed to the pair of divided bodies 14 and 15 of the casing 16. Further, as shown in FIG. 10, a photocatalyst that purifies pollutants in the air by receiving light irradiation is carried on the surface of the heat transfer sheet 18, and the light from the light source lamp 60 held by the casing 16 is irradiated. You may do it. Further, the heat transfer sheet 18 may be formed by mixing a photocatalyst into the material of the heat transfer sheet 18. If the partitioning member 20 is made of a transparent or translucent translucent glass or resin, the entire heat transfer sheet 18 can be irradiated with light, and the purification efficiency can be increased.

Here, a photocatalyst generally means a substance that absorbs light such as ultraviolet rays and gives the energy to a reactant to cause a chemical reaction. The main functions of this photocatalyst are at least a deodorizing function by removing odor components, a function of decomposing contaminants that are not odor components, and a function of disinfecting microorganisms and inactivating viruses (so-called sterilization and antibacterial functions). Anything that achieves one will do. These functions are considered to be caused by the oxidative decomposition function of the photocatalyst. Examples of the photocatalyst having the oxidative decomposition function include titanium oxide (for example, TiO ₂ ) having an anatase crystal structure. Titanium oxide having this anatase-type crystal structure is preferable in that it can exhibit high purification ability even with weak ultraviolet light. Alternatively, zinc oxide (ZnO), tungsten oxide (for example, WO ₃ ), or the like may be used.

As the light source lamp, a cold cathode fluorescent lamp can be exemplified. It may be a black light lamp. Further, the present heat exchange unit may be arranged along an installation surface composed of a ceiling surface. In addition, various changes can be made within the scope of the present invention.

[0032]

According to the first aspect of the present invention, the heat transfer is performed by using each partitioning material in a very thin space in which the thickness of the pair of partitioning materials is added to the corrugated height of the single heat transfer sheet. Each air path including the entrance and the exit on both sides of the seat can be partitioned at low cost. In addition, a high heat exchange efficiency can be achieved by flowing a pair of opposed flows sandwiching the heat transfer sheet through each air passage extending along the direction in which the top of the waveform extends. To obtain a large heat exchange capacity, the length may be increased along the direction crossing the top of the waveform. Furthermore, since the unit can be made thin by housing the thin heat exchange element in the casing, it is very easy to arrange it in the space above the ceiling along the ceiling surface or in the room along the wall surface. Are suitable.

According to the second aspect of the present invention, the air passages can be easily formed on both sides of the heat exchange element by the divided bodies.
In addition, assembly of the unit is facilitated. Further, maintenance such as attachment and detachment of the heat exchange element from the casing becomes easy. According to the third aspect of the present invention, a plurality of thin casings each accommodating a heat exchange element are arranged along a spreading installation surface such as a ceiling surface or a wall surface, so that even a thin type (air volume and heat exchange capacity) can be obtained. Regarding) a large capacity unit can be realized.

According to the fourth aspect of the present invention, by providing a pair of openings communicating with the respective air paths in the casing, the air paths of the arranged casings can be easily connected to each other by, for example, a short pipe. Can be. According to the fifth aspect of the invention, the openings can be more easily connected to each other. According to the sixth aspect of the present invention, the air paths of the casings can be connected to each other with a minimum necessary connection path.

According to the seventh aspect of the present invention, the same kind of air path of each casing can be in a parallel relationship with each other through a common chamber. Efficiency can be increased. In the invention described in claim 8, for example, at the lower part of the plurality of casings, the airflow joined to the first part of the L-shaped chamber can be guided to the upper part of the casing via the second part. And the degree of freedom in layout increases.

According to the ninth aspect of the present invention, the present heat exchange element can be applied as a sensible heat exchange element having high heat exchange efficiency, and the generated moisture can be received by the drain pan.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a heat exchange unit according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of one of a plurality of units constituting the heat exchange unit.

FIG. 3 is a plan view of the heat exchange element.

FIG. 4 is an enlarged sectional view of a main part taken along line PP of FIG. 3;

FIG. 5 is an exploded perspective view of the heat exchange unit.

FIG. 6 is a schematic side view showing a flow of an air flow in the heat exchange unit.

FIG. 7 is a schematic perspective view of a heat exchange unit according to another embodiment of the present invention.

FIG. 8 is a schematic side view showing a flow of an air flow in the heat exchange unit of FIG.

FIG. 9 is a schematic side view of a heat exchange unit according to still another embodiment of the present invention.

FIG. 10 is a schematic sectional view of a heat exchange unit according to still another embodiment of the present invention.

[Explanation of symbols]

 A heat exchange unit 1 first unit 2 second unit 3 third unit 4 wall surface (installation surface) 5,6 chamber 8 first part 9 second part 14,15 split body 16 casing 17 heat exchange element 18 heat transfer Seat 19 Frame body 20 Partition material 21 Top 22, 23 Air path 24, 25 Inlet 26, 27 Outlet 30, 31, 34, 35 Opening 36 Valley part 40-43 Opening 47-50 Opening 51 Air supply 52 Exhaust 53 Connecting path 54 Drain pan

Claims (9)

[Claims] 1. A casing (16) having a thin rectangular parallelepiped shape in one direction (Z) and having a wide surface arranged parallel to an installation surface consisting of a wall surface (4) or a ceiling surface. Within (16), a heat transfer sheet including a single heat transfer sheet (18) having a corrugated cross section that rises and falls in the one direction (Z), and a frame (19) holding the periphery of the heat transfer sheet (18). Each of the air passages (22) traverses the corrugation along the corrugated top (21) on both sides of the exchange element (17) and the heat transfer sheet (17), and faces the opposing heat transfer sheet (17). ) (23)
Each partitioning material (20) is disposed at an intermediate portion in the direction (X) in which the corrugated top (21) extends, and the partitioning material (20) is arranged along the direction (X) in which the corrugated top (21) extends. A heat exchange unit characterized by being provided with inlets (24) and (25) and outlets (26) and (27) of air paths (22) and (23) before and after. 2. The casing (16) includes a pair of divided bodies that sandwich the heat exchange element (17) in front and rear in the one direction (Z).
2. The heat exchange unit according to claim 1, wherein the heat exchange unit is formed by combining (14) and (15). 3. The heat exchange unit according to claim 1, wherein a plurality of said casings (16) are provided and arranged along the installation surface (4). 4. The casing (16) communicates with inlets (24) and (25) and outlets (26) and (27) of each air passage (22) (23) on both sides of the heat transfer sheet (17). 4. The heat exchange unit according to claim 3, wherein the heat exchange unit has a pair of openings (30, 31) (34, 35). 5. The heat exchange unit according to claim 4, wherein all of said openings (30), (31), (34) and (35) are oriented in the same direction (Y). 6. An air passage (22) (2) on the same side of each casing (16).
A connection path (34) for connecting adjacent openings (30, 31) (34, 35) of adjacent casings (16) to each other so as to connect 3) in series. Item 6. The heat exchange unit according to Item 5. 7. The apparatus further comprises chambers (5) and (6) arranged along the plurality of casings (16).
(6) is the same kind of opening (30) (31) (34) (35) of each casing (16)
Common duct (10) (11) (12) (13)
The heat exchange unit according to claim 5, wherein the heat exchange unit is connected to the heat exchange unit. 8. The chamber (5) (6) includes a plurality of casings.
8. An L-shaped chamber (6) having a first portion (8) disposed across the (16) and a second portion (9) orthogonal thereto. The heat exchange unit as described. 9. The heat exchange element (17) comprises a sensible heat exchange element for preventing passage of water vapor by the heat transfer sheet (18), and falls from the sensible heat exchange element below the sensible heat exchange element. Drain pan that receives moisture
The heat exchange unit according to any one of claims 1 to 8, wherein (54) is arranged.