JP2023031330A - Heat exchange element and its manufacturing method - Google Patents

Abstract

To easily manufacture a heat exchange element having separation flow passages at an inflow side and a discharge side of opposed flow passages, by using a single-sided cardboard with a little man-hour.SOLUTION: Primary-side flow passages 3 and secondary-side flow passages 4 are alternately formed by stacking single-faced corrugated cardboards 2 in multistage, the single-faced corrugated cardboard 2 includes a liner material 21 and a corrugated core material 22 forming a step on the liner material 21, the flow passage formed by the corrugation of the core material 22 has a supply air turning flow passage portion 24 and an exhaust air turning flow passage portion 25, an intermediate flow passage portion 26 is formed between the turning flow passage portions 24, 25 at both sides, the turning flow passage portions 24, 25 adjacent to each other via the liner material 21 turn to directions different from each other, and the whole flow passage from an air supply port 24a of the supply air turning flow passage portion 24 to an air exhaust port 25a of the exhaust air turning flow passage portion 25 is formed with a sheet of the liner material 21.SELECTED DRAWING: Figure 1

Description

The present invention relates to a heat exchange element made of single-faced corrugated board and a method for manufacturing the same.

A conventional heat exchange element is described in Patent Document 1, for example. It consists of a liner made of moisture-permeable paper and a corrugated sheet made of moisture-permeable crepe paper. A large number of corrugated cardboards are laminated and adhered, and the direction of the tiers of vertically adjacent filters is perpendicular to each other.

In the heat exchange element of Patent Document 2, partition plates and spacing plates each having a corrugated cross section are alternately laminated to form a counter channel portion, a first separation channel portion, and a second separation channel. forming a department. In the counter flow path portion, the first flow path and the second flow path are alternately formed with the partition plate interposed therebetween in the direction along the stacking direction of the partition plate and the spacing plate, and are adjacent to each other via the partition plate. The spacing plates are arranged so that their corrugated crests are parallel to each other.

The first separation channel portion and the second separation channel portion separate the air flowing through the first channel and the air flowing through the second channel in different directions. Each partition plate of the opposing channel portion and each partition plate of the first separation channel portion are joined with tape, and each partition plate of the opposing channel portion and each partition plate of the second separation channel portion are joined with tape. spliced.

In Patent Document 3, a ventilation passage is formed between each of a plurality of heat transfer plates stacked at a predetermined interval, and a primary airflow and a secondary airflow are alternately circulated in each ventilation passage every other stage to generate a primary airflow. It is a heat exchanger that exchanges heat between and a secondary air flow, and a part of the heat transfer plate is formed with either a convex portion or a concave portion, or an uneven portion.

JP 2008-64357 WO2016-147359 JP 2009-210235

Conventional general single-faced corrugated paperboard has a flat liner and corrugated corrugated corrugated corrugated corrugated corrugated corrugated corrugated corrugated corrugated corrugated corrugated board.

When the single-faced corrugated board is used to form a heat exchange element, basically the primary side channel and the secondary side channel have a straight channel shape.

As a result, when separate flow paths are provided on the inflow side and the discharge side of the counter flow path in the heat exchange element, the counter flow path and the separation flow path cannot be formed by one continuous member, and are separated from each other by one side. A continuous flow path is formed by forming a counter flow path portion and a separation flow path portion with members cut out from corrugated cardboard, and then connecting the both.

In this way, when the separation channels are formed on the inflow side and the discharge side of the opposing channel in a direction different from the axial direction of the opposing channel, the production process is complicated and requires many man-hours. I had a problem.

The present invention solves the above-described problems, and can easily manufacture a heat exchange element having separate flow paths on the inflow side and the discharge side of opposing flow paths using single-faced corrugated paper with a small number of man-hours. An object of the present invention is to provide a heat exchange element and a manufacturing method.

In order to solve the above-described problems, the heat exchange element of the present invention has single-faced corrugated paperboard stacked in multiple stages to alternately form a primary side flow path and a secondary side flow path, and the single-faced corrugated paperboard includes a liner material, A corrugated core material forming a step on the liner material is provided. An intermediate channel portion is provided between the channel portions, and the direction-changing channel portions adjacent to each other via the liner material change directions in mutually different directions, and the air is exhausted from the air supply port of the direction-changing channel portion on the air supply side. The entire channel up to the exhaust port of the direction-changing channel portion on the side is formed on one sheet of liner material.

In the heat exchange element of the present invention, the entire flow path from the air supply port of the direction-changing flow path portion on the air supply side to the exhaust port of the direction-changing flow path portion on the exhaust side is formed of a single sheet of material. It is characterized by

In the heat exchange element of the present invention, on one liner material, a thin material forming a direction-changing flow path portion on the air supply side, a thin material forming a direction-changing flow path portion on the exhaust side, and an intermediate flow Characteristically, by arranging the thin material that forms the passage, the entire passage is formed from the air supply port of the direction-changing passage portion on the air supply side to the exhaust port of the direction-changing passage portion on the exhaust side. and

In the method of manufacturing a heat exchange element of the present invention, a corrugated liner material forming a step is placed on a liner material to form a single-faced corrugated board, and a flow path formed by the corrugated liner material is supplied. In addition to providing direction-changing passages on the air side and the exhaust side, an intermediate passage portion is provided between the direction-changing passages on both sides, and the air supply port of the direction-changing passage on the air supply side is connected to the direction of change on the exhaust side. The entire flow path up to the exhaust port of the counter flow path part is formed on a sheet of liner material, the single-faced corrugated board is cut to form a sheet element, and the sheet element is stacked in multiple stages, In addition, the direction-changing flow passage portions adjacent to each other with the liner material interposed therebetween are arranged so as to change directions in mutually different directions, and the primary-side flow passage and the secondary-side flow passage are alternately formed.

In the method for manufacturing a heat exchange element of the present invention, the entire flow path from the air supply port of the direction-changing flow path section on the air supply side to the exhaust port of the direction-changing flow path section on the exhaust side is formed by a sheet of shin material. is formed by corrugating with a single corrugating roll.

In the method for manufacturing a heat exchange element of the present invention, the whole flow path from the air supply port of the direction-changing flow path section on the air supply side to the exhaust port of the direction-changing flow path section on the exhaust side is is formed by corrugating with a corrugating roll, and the corrugating roll consists of a single roll that is continuous over the entire length in the axial direction, and has teeth that form a corrugated material on the outer periphery of the roll. The teeth of the intermediate portion corresponding to the passage are parallel to the axis of the corrugating roll, and the teeth of both side portions corresponding to the direction changing passages on the air supply side and the exhaust side are parallel to the axis of the corrugating roll. It is characterized by having a twist angle.

In the method for manufacturing a heat exchange element of the present invention, the whole flow path from the air supply port of the direction-changing flow path section on the air supply side to the exhaust port of the direction-changing flow path section on the exhaust side is is formed by corrugating with a corrugated roll, the corrugated roll consists of a plurality of rolls that are connected in the axial direction and rotate together, and each roll has teeth that form a corrugated material on the outer periphery of the roll, As for the teeth, the teeth of the intermediate roll corresponding to the intermediate passage are parallel to the axis of the corrugating roll, and the teeth of the side rolls corresponding to the direction changing passages on the air supply side and the exhaust side are corrugated. It is characterized by having a twist angle with respect to the axis of the roll.

In the method for manufacturing a heat exchange element of the present invention, the whole flow path from the air supply port of the direction-changing flow path section on the air supply side to the exhaust port of the direction-changing flow path section on the exhaust side is is formed by corrugating with a pair of corrugated rolls, and both corrugated rolls consist of a plurality of rolls that are connected in the axial direction and rotate integrally, and each roll has teeth that form a corrugated material on the outer circumference of the roll. The teeth of the intermediate roll corresponding to the intermediate flow path are parallel to the axis of the corrugating roll, and the teeth of the side rolls corresponding to the air supply side and exhaust side direction changing flow paths The teeth have a helix angle with respect to the axis of the corrugating roll, the teeth of all the side rolls have the same helix angle, and the helix of the teeth on the side rolls facing each other through the core material is The direction is opposite, the twist direction of the teeth is opposite in the side rolls on both sides of the intermediate roll, and the pair of corrugated rolls are viewed from the discharge side of the core material, the side rolls facing each other through the core material The teeth of the corrugating roll extend axially outward of the corrugating roll in a direction approaching the core material.

In the method for manufacturing a heat exchange element of the present invention, the core material includes a core material forming the air supply side direction-changing channel portion, a core material forming the air supply side direction changing channel portion, and an intermediate channel. Each core material is corrugated with a separate corrugated roll, pasted on a piece of liner material, and from the air supply port of the direction changing flow path part on the air supply side It is characterized in that the entire flow path is formed up to the exhaust port of the direction-changing flow path section on the exhaust side.

In the above configuration, the flow path formed by corrugated corrugations of the single-faced corrugated board, that is, the entire flow from the air supply port of the air supply-side direction-changing channel portion to the exhaust port of the air-exhaust-side direction-changing channel portion Since the channels are formed on a single liner, single-faced corrugated cardboard is cut to form single-wafer elements, and the single-wafer elements are stacked in multiple stages to create a flow path on the inflow side and the discharge side of the opposing flow path. A heat exchange element having separation channels can be easily manufactured with a small number of man-hours.

Schematic diagram showing a single-faced corrugated board according to an embodiment of the present invention Schematic diagram showing a case where the single-faced corrugated board according to the same embodiment is cut into sheets and further cut into hexagonal elements. FIG. 4 is a schematic diagram showing a state in which the single-faced corrugated board according to the embodiment is cut into sheets, rotated 180 degrees about an axis perpendicular to the paper surface, and then cut into hexagonal elements; Schematic diagram showing a state in which elements of single-faced corrugated paper cut into sheets according to the same embodiment are stacked in multiple stages. Schematic diagram showing a corrugated roll for corrugating single-faced corrugated paper according to the same embodiment. Schematic diagram showing a corrugating roll for corrugating single-faced corrugated paper according to another embodiment FIG. 2 shows a schematic diagram of a pair of corrugating rolls for corrugating single-faced corrugated paper according to the same embodiment, and is a side view seen from the axial direction of the corrugating rolls. FIG. 2 shows a schematic diagram of a pair of corrugating rolls for corrugating single-faced corrugated paper according to the same embodiment, and is a front view seen from the supply side of the shin material. FIG. 2 shows a schematic diagram of a pair of corrugating rolls for corrugating single-faced corrugated paper according to the same embodiment, and is a front view seen from the sheet material discharge side. FIG. 3 is a schematic diagram showing a single-faced corrugated board according to another embodiment of the present invention, showing two types of single-faced corrugated board having symmetrical patterns of corrugations formed on a liner material; FIG. 4 is a schematic diagram showing a case where one single-faced corrugated board according to the same embodiment is cut into sheets and further cut into hexagonal elements; Schematic diagram showing a case where the other single-faced corrugated board according to the same embodiment is cut into sheets and further cut into hexagonal elements. Schematic diagram showing a state in which elements of single-faced corrugated paper cut into sheets according to the same embodiment are stacked in multiple stages. 1 shows a single-faced corrugated board according to another embodiment of the present invention; Schematic diagram showing single-faced corrugated board in which each of the shin materials forming the path is corrugated with separate corrugated rolls and pasted on one liner material. Schematic diagram showing a corrugated roll for corrugating single-faced corrugated paper according to the same embodiment. Schematic diagram showing an element obtained by cutting single-faced corrugated paper according to the same embodiment into sheets. Schematic diagram showing a single-faced corrugated board according to another embodiment of the present invention 1 shows a state in which an air supply port and an exhaust port are attached to a heat exchange element in which rectangular elements formed by cutting single-faced corrugated paper according to the same embodiment are stacked in multiple stages, and FIG. Plan view showing the element 2 shows a state in which an air supply port and an exhaust port are attached to a heat exchange element in which rectangular elements formed by cutting single-faced corrugated paper according to the embodiment are stacked in multiple stages, and a secondary flow path; A plan view showing the elements of

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Example 1)
1 to 4, the heat exchange element 1 according to the present embodiment is used in a total heat exchanger, and is formed by stacking single-faced corrugated paperboards 2 in multiple stages to form a primary side flow path 3 and a secondary side flow path. 4 are alternately formed.

As shown in FIG. 1, the single-faced corrugated paperboard 2 is formed by arranging a corrugated corrugated continuous paper liner material 22 on a continuous paper liner material 21 to form a corrugated corrugated continuous paper. It is cut into a sheet element 2a. In this embodiment, the element 2b is further cut into a predetermined shape, here a hexagonal element 2b.

Then, as shown in FIG. 2, the hexagonal elements 2b arranged in the positive direction and, as shown in FIG. to form the heat exchange element 1 shown in FIG.

The liner material 21 forming the single-faced corrugated board 2 and the corrugated shin material 22 forming a step on the liner material 21 have moisture permeability and heat transfer properties. A strong material such as a non-woven fabric or paper having a large basis weight is used for the shin material 22 .

The core material 22 is corrugated to form a channel 23 , and the channel 23 formed by the corrugation of the core material 22 becomes the primary side channel 3 or the secondary side channel 4 of the heat exchange element 1 . The flow path 23 of the thin material 22 has an air supply direction change channel portion (separation channel) 24 on the air supply side and an exhaust direction change channel portion (separation channel) 25 on the exhaust side. An intermediate flow path portion (opposing flow path) 26 is provided between the direction-changing flow path portions 24 and 25 of the air supply direction-changing flow path portion 24, and the air supply port 24a of the air supply direction-changing flow path portion 24 is connected to the exhaust direction-changing flow path portion 25. A single core material 22 is formed on a single liner material 21 to form the entire flow path up to the exhaust port 25a.

In the present embodiment, the air supply port 24a of the air supply direction-changing channel portion 24 and the exhaust port 25a of the exhaust gas direction-changing channel portion 25 are formed in the rectangular element 2a before being cut into the hexagonal element 2b, It is open toward the same side.

In the heat exchange element 1 in which the elements 2b of the single-faced corrugated paperboard 2 are stacked in multiple stages, the supply air direction changing channel portion 24 and the exhaust direction changing channel portion 25 of the upper and lower channels 23 are adjacent to each other with the liner material 21 interposed therebetween. As a result, the supply air direction-changing channel part 24 and the exhaust air direction-changing channel part 25 are changed in directions different from each other, and the primary side channel 3 and the secondary side channel 4 of the heat exchange element 1 are alternately formed. there is

When the heat exchange element 1 is attached to the total heat exchanger, the heat exchange element 1 is arranged in a predetermined frame of the total heat exchanger, and the space between the frame and the heat exchange element 1 is filled with silicone resin, The frame and the heat exchange element 1 are adhered together, and air leakage is blocked.

According to the above configuration, the flow path formed by corrugated corrugations of single-faced corrugated paper, that is, from the air supply port 24a of the air supply direction-changing channel portion 24 to the exhaust port 25a of the exhaust gas direction-changing channel portion 25. is formed on one sheet of liner material 21, the single-faced corrugated board 2 is cut to form the sheet elements 2a and 2b, and the sheet elements 2a and 2b are stacked in multiple stages. The heat exchange element 1 having separate flow paths on the inflow side and the discharge side of the opposing flow paths can be easily manufactured with a small number of man-hours.
(corrugated roll)
In this embodiment, a single corrugating roll 61 shown in FIG. 5 is used for corrugating the shin material 22 . A pair of corrugating rolls 61 are arranged vertically for use.

The corrugating roll 61 is composed of a single roll continuous over the entire length in the axial direction. 1 and has a groove 82 forming a concave shape. Teeth 81 and grooves 82 extend the full axial length of corrugating roll 61 .

The tooth 81 has a toothed portion 81a at an intermediate portion corresponding to the intermediate flow passage portion 26, which is parallel to the axis of the corrugating roll 61, and has both side portions corresponding to the direction-changing flow passage portions 24, 25 on the air supply side and the exhaust side. teeth 81 b and 81 c have a twist angle with respect to the axis of the corrugating roll 61 .

By corrugating with the corrugating rolls 61, the entire flow path from the air supply port 24a of the air supply direction-changing channel portion 24 to the exhaust port 25a of the exhaust direction-changing channel portion 25 is formed in the single sheet of shin material 22. It is formed.

Although a single corrugating roll 61 is used in this embodiment, a pair of corrugating rolls 71 and 72 comprising a plurality of rolls can also be used as shown in FIGS. The corrugating rolls 71 and 72 are composed of a plurality of rolls including intermediate rolls 71a and 72a and side rolls 71b, 71c, 72b and 72c which are connected in the axial direction. The intermediate rolls 71a, 72a and the side rolls 71b, 71c, 72b, 72c are fixed to the respective shafts 71d, 72d by a key 73 so that the intermediate rolls 71a, 72a and the side rolls 71b, 71c, 72b are fixed to the shafts 71d, 72d. , 72c rotate together.

The middle rolls 71a, 72a can be singular or plural, or it is possible to eliminate the middle rolls 71a, 72a and have only the side rolls 71b, 71c, 72b, 72c.

Each of the rolls 71a, 72a, 71b, 71c, 72b, 72c has teeth 81 forming a wave pattern on the outer periphery of the roll.

The teeth 81 of the intermediate rolls 71a and 72a corresponding to the intermediate flow path 26 are spur-shaped in parallel with the axes of the corrugating rolls 71 and 72, so that the air-supply side and the exhaust side of the directional flow can be controlled. The teeth 81b, 81c of the side rolls 71b, 71c, 72b, 72c corresponding to the passages 24, 25 are helical with respect to the axis of the corrugating roll 71. As shown in FIG.

As shown in FIG. 7, a pair of corrugated rolls 71 and 72 are arranged vertically, and a pair of rollers 74 for suppressing the floating of the core material 22 is arranged on the supply side of the core material 22 . Instead of the roller 74, it is also possible to adopt a slit structure formed by a plate-like member.

The teeth of all side rolls 71b, 71c, 72b, 72c of both corrugating rolls 71, 72 have the same helix angle. The twist directions of the teeth 81b and 81c of the side rolls 71b and 72b, and of the side rolls 71c and 72c, which face each other with the thin material 22 interposed therebetween, are opposite to each other. The twist directions of the teeth 81b and 81c of the side rolls 71b and 71c, and the side rolls 72b and 72c on both sides of the intermediate rolls 71a and 72a are opposite to each other.

As shown in FIG. 8, when the pair of corrugating rolls 71 and 72 are viewed from the supply side of the core material 22, the side rolls 71b, 72b, and 71c face each other with the core material 22 interposed therebetween. The teeth 81b, 81c of the side rolls 72c extend axially outward of the corrugating rolls 71, 72 in a direction away from the core material 22. As shown in FIG.

When the core material 22 enters between the pair of corrugating rolls 71 and 72, it is positioned between the side rolls 71b and 71c on both sides of the intermediate rolls 71a and 72a and between the side rolls 72b and 72c. A force F acts outward in the axial direction of the corrugating rolls 71 and 72 on the core material 22 sandwiched between them, and the teeth 81a and 81b have different angles with respect to the axial centers of the corrugating rolls 71 and 72. , 81c, and in that state, it may wrinkle and form a step. Therefore, the rollers 74 on the supply side of the pair of rollers 74 prevent the lining material 22 from rising, thereby preventing wrinkles. This effect can be replaced with a slit structure as described above.

As shown in FIG. 9, when the pair of corrugating rolls 71 and 72 are viewed from the sheet material 22 discharge side, the sheet material 22 is interposed between the side rolls 71b and 72b, and the side rolls 71c. The teeth 81b, 81c of the side rolls 72c extend toward the axially outer side of the corrugating rolls 71, 72 in a direction approaching the core material 22. As shown in FIG.

When the core material 22 is discharged from between the pair of corrugating rolls 71 and 72, the intermediate rolls 71a and 72a and between the side rolls 71b and 71c on both sides and between the side rolls 72b and 72b are discharged. A force F acts outward in the axial direction of the corrugating rolls 71 and 72 on the corrugating material 22 discharged from between 72c. Then, the teeth 81b and 81c act to widen the backing material 22 toward the outer side in the axial direction of the corrugating rolls 71 and 72, thereby preventing the backing material 22 from being wrinkled.

By corrugating with the corrugating rolls 71 and 72, the entire flow from the air supply port 24a of the air supply direction-changing channel portion 24 to the exhaust port 25a of the exhaust gas direction-changing channel portion 25 is formed on the single sheet of shin material 22. A path is formed.
(Example 2)
In the first embodiment described above, the hexagonal elements 2b forming the primary side flow path 3 and the secondary side flow path 4 of the heat exchange element 1 are cut out from the single-faced corrugated board 2 forming one continuous paper. By rotating a rectangular single-faced corrugated cardboard 2 having the same channel shape by 180 degrees on the paper surface of the drawing, the air supply turning direction channel portion 24 and the exhaust turning direction flow channel 24 are changed. The passages 25 were oriented in different directions. In this case, the air supply port 24a of the air supply direction-changing channel portion 24 and the exhaust port 25a of the exhaust gas direction-changing channel portion 25 are located on the same side of the single-faced corrugated board 2 before being cut into the hexagonal elements 2b. It is open towards

However, it is also possible to form two types of single-faced corrugated board 51, 52, as shown in FIG. That is, as shown in FIG. 9, liner materials 22a and 22b corrugated in different corrugated shapes are arranged on two continuous paper liner materials 21 to form steps.

In this case, the rectangular sheet elements 51a and 52a obtained by cutting the respective single-faced corrugated paperboards 51 and 52 are connected to the air supply port 24a of the air supply direction-changing channel portion 24 and the exhaust port of the exhaust gas direction-changing channel portion 25. 25a are opened toward opposite side sides of the rectangular sheet-shaped elements 51a and 52a.

Then, by cutting the rectangular sheet elements 51a and 52a, two types of elements, a positive hexagonal element 52b shown in FIG. 10 and a reverse hexagonal element 51b shown in FIG. 11, are obtained. 51b and 52b are formed.

Then, as shown in FIG. 12, two types of elements 51b and 52b are alternately stacked in multiple stages to form the heat exchange element 1. As shown in FIG.
(Example 3)
In Examples 1 and 2 above, the shin members 22, 22a, 22b are corrugated with a single corrugating roll.

However, as shown in FIGS. 13 and 14, a thin member 22c forming the supply air direction-changing channel portion 24, a thin member 22d forming the exhaust gas direction-changing channel portion 25, and an intermediate channel portion 26 are formed. Each of the lining materials 22e is separately pasted on one liner material 21, and extends from the air supply port 24a of the air supply direction-changing channel portion 24 to the exhaust port 25a of the exhaust gas direction-changing channel portion 25. It is also possible to use a single-faced corrugated cardboard 61 and a rectangular element 61a forming all the channels.

In this case, as shown in FIG. 14, the corrugating rolls 91 have a plurality of rolls 91a, 91b, 91c for corrugating the respective core members 22c, 22d, 22e spaced on a single axis 91d. and corrugated.
(Example 4)
In each of the above examples, the heat exchange element 1 is formed of the element 2b, the elements 51b, and 52b cut into hexagons. However, as shown in FIGS. 16 to 18, it is also possible to form the heat exchange element 1 with an element 2a cut into a rectangular shape and arrange the heat exchange element 1 inside the rectangular frame 8 of the total enthalpy heat exchanger. is. Although the element 2a described in the first embodiment is illustrated here, the heat exchange element 1 can also be formed by the elements 51a, 52a, and 61a described in the second and third embodiments.

Further, in each of the above-described embodiments, the intermediate flow channel portion 26 between the supply air direction-changing channel portion 24 and the exhaust gas direction-changing channel portion 25 has been described as a straight channel, but the intermediate channel portion 26 is curved. It is also possible to form it in a shaped channel.

Furthermore, in each of the above embodiments, the core members 22, 22a to 22e are corrugated materials, but it is also possible to use press-molded materials.

1 Heat exchange element 2, 51, 52, 61 Single-faced corrugated board 2a, 51a, 52a, 61a Rectangular leaf element 2b, 51b, 52b Hexagonal element 3 Primary side channel 4 Secondary side channel 8 Frame 21 liner material 22, 22a, 22b, 22c, 22d, 22e shin material 23 flow path 24 supply air direction-changing flow path section 24a air supply port 25 exhaust direction-changing flow path section 25a exhaust port 26 intermediate flow path section 61, 71, 72 corrugating rolls 71a, 72a intermediate rolls 71b, 71c, 72b, 72c side rolls 71d, 72d shafts 73 keys 74 rolls 81 teeth 82 grooves 81a, 81b, 81c teeth

Claims (8)

The primary and secondary channels are formed alternately by stacking single-faced corrugated paper in multiple stages,
The single-faced corrugated board comprises a liner material and corrugated liner material forming corrugations on the liner material,
The flow path formed by the corrugation of the shin material has a direction-changing flow path on the air supply side and the exhaust side, and has an intermediate flow path between the direction-changing flow paths on both sides,
Adjacent direction-changing flow passage portions through the liner material are turned in different directions,
A heat exchange characterized in that the entire flow path from the air supply port of the direction-changing flow path section on the air supply side to the exhaust port of the direction-changing flow path section on the exhaust side is formed on a single liner material. element. The entire passage from the air supply port of the direction-changing passage portion on the air supply side to the exhaust port of the direction-changing passage portion on the exhaust side is formed of a single sheet of material. The heat exchange element according to . On one sheet of liner material, a liner material forming the air supply side direction-changing passage portion, a liner member forming the exhaust side direction-changing passage portion, and a liner member forming the intermediate passage portion are placed. 2. The entire passage from the air supply port of the direction-changing channel portion on the air supply side to the exhaust port of the direction-changing channel portion on the exhaust side is formed. heat exchange element. On top of the liner material, a corrugated lining material that forms a step is placed to form a single-faced corrugated board, and the direction-changing flow path section is formed on the air supply side and the exhaust side of the flow path formed by the corrugated lining material. is provided, and an intermediate flow path is provided between the direction-changing flow paths on both sides, from the air supply port of the direction-changing flow path on the air supply side to the exhaust port of the direction-changing flow path on the exhaust side. All flow paths are formed on a single liner material,
Cutting single-faced corrugated paper to form a sheet element,
Single-wafer elements are stacked in multiple stages, and adjacent direction-changing flow path portions are arranged with a liner material interposed so that the directions of the adjacent direction-changing flow paths are different from each other, forming the primary-side flow path and the secondary-side flow path alternately. A method for manufacturing a heat exchange element, characterized by: The entire flow path from the air supply port of the direction-changing flow path on the air supply side to the exhaust port of the direction-changing flow path on the exhaust side is formed in a sheet of shin material by corrugating with corrugated rolls,
The corrugating roll consists of a single roll that is continuous over the entire length in the axial direction, and has teeth that form a corrugated material on the outer periphery of the roll,
As for the teeth, the teeth at the intermediate portion corresponding to the intermediate flow path portion are parallel to the axis of the corrugating roll, and the teeth at both side portions corresponding to the direction changing flow passage portions on the air supply side and the exhaust side are formed on the corrugating roll. 5. The method of manufacturing a heat exchange element according to claim 4, wherein the element has a twist angle with respect to the axis. The entire flow path from the air supply port of the direction-changing flow path on the air supply side to the exhaust port of the direction-changing flow path on the exhaust side is formed in a sheet of shin material by corrugating with corrugated rolls,
The corrugating roll consists of a plurality of rolls that are connected in the axial direction and rotate integrally, and each roll has teeth that form a corrugated material on the outer periphery of the roll,
As for the teeth, the teeth of the intermediate roll corresponding to the intermediate passage are parallel to the axis of the corrugating roll, and the teeth of the side rolls corresponding to the direction changing passages on the air supply side and the exhaust side are corrugated. 5. The method of manufacturing a heat exchange element according to claim 4, wherein the roll has a twist angle with respect to the axial center of the roll. A single piece of shin material is corrugated with a pair of corrugated rolls to form the entire flow path from the air supply port of the direction-changing flow path on the air supply side to the exhaust port of the direction-changing flow path on the exhaust side. death,
Both corrugating rolls are composed of a plurality of rolls that are connected in the axial direction and rotate integrally, and each roll has teeth that form a corrugated material on the outer periphery of the roll,
As for the teeth, the teeth of the intermediate roll corresponding to the intermediate passage are parallel to the axis of the corrugating roll, and the teeth of the side rolls corresponding to the direction changing passages on the air supply side and the exhaust side are corrugated. has a twist angle with respect to the axis of the roll,
The teeth of all the side rolls have the same helix angle, the side rolls facing each other with the backing material have opposite twist directions, and the side rolls on both sides of the intermediate roll have teeth in opposite directions. The torsion directions of the threads are opposite to each other,
When the pair of corrugating rolls are viewed from the side of the corrugating material discharging side, the teeth of the side rolls opposed to each other with the corrugating material interposed therebetween extend outward in the axial direction of the corrugating rolls in a direction approaching the corrugating material. The method for manufacturing a heat exchange element according to claim 4. The core material is composed of a core material that forms the direction-changing channel portion on the air supply side, a core material that forms the direction-changing channel portion on the air supply side, and a core member that forms the intermediate channel portion. The core material is corrugated with a separate corrugated roll, pasted on a sheet of liner material, and connected from the air supply port of the direction-changing channel on the air supply side to the exhaust port of the direction-changing channel on the exhaust side. 5. The method of manufacturing a heat exchange element according to claim 4, wherein all the flow paths are formed up to .

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