JPH04353394A - Heat exchanging element - Google Patents

Abstract

PURPOSE:To reduce manufacturing labor by a method wherein a unit member is formed of the groups of first and second ribs, which are orthogonal to each other, to increase the strength of the same while said unit members are piled in the same direction. CONSTITUTION:An unit member U, constituting a heat exchanging element, is provided with a pair of liners 1, 2, a first rib group A, bonded between the liners 1, 2, and a second rib group B, bonded onto the upper surface of the liner 1. Respective liners 1, 2 partition two kinds of fluid, between which heat exchange is to be effected, while the rib groups A, B are arranged orthogonally to each other and one of them is arranged along the lengthwise direction of the liner while the other of them is arranged along the widthwise direction of the liners. Further, the rib groups A, B are provided with ribs (a), (b) and respective ribs (a), (b) are bonded to the liners 1, 2 whereby the interval between the liners is specified. The unit member U is provided with said constitution whereby the same member is hardly deformed against bending in all directions and easy in handling. On the other hand, the heat exchanging element is manufactured by piling the unit members U in the same direction whereby the manufacturing labor for the same element can be reduced.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange element having a laminated structure.

0002

[Prior Art] Heat exchange elements are known to be of the countercurrent type, countercurrent type, or orthogonal type (oblique type), depending on the flow shape of the two fluids to be heat exchanged. The heat exchange elements used in the apparatus are usually of the counterflow type or the orthogonal type. The basic structure is that a liner made of cardboard or the like that partitions two fluids to be heat exchanged is laminated with a corrugated spacer made of pressed paper or the like forming multiple parallel flow paths sandwiched in between, and the entire liner is made of corrugated cardboard. It has a similar structure.

[0003] This heat exchange element is manufactured by gluing a spacer obtained by cutting a long corrugated plate to a liner obtained by cutting a long piece. Cutting in a direction that is not parallel to the peaks and valleys tends to cause the waveform on the end face to collapse, and in air-to-air heat exchangers, the deformation of the end face during cutting causes a large pressure loss. Furthermore, since a predetermined size and shape are obtained by cutting, there is a problem that the yield of the material is poor.

In order to solve this problem, for example, as shown in Japanese Unexamined Patent Publication No. 61-186795, linear ribs are arranged in a row at predetermined intervals on one heat transfer surface of a flat plate. A heat exchange element is provided by laminating a plurality of unit members arranged in the heat exchange element.

[0005]

[Problem to be Solved by the Invention] However, in this heat exchange element, the above-mentioned unit members are laminated while alternating their orientations by 90 degrees, so there is a problem in that the manufacturing process is very time-consuming. was there. Further, since the unit member described above has ribs only in one direction, it is easily deformed when bent in a direction intersecting the ribs. Unit members that are easily deformed in this way are difficult to carry and handle, and require more effort to manufacture.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to solve the above-mentioned technical problems and to provide a heat exchange element that is easy to handle and manufacture.

[0007]

[Means for Solving the Problems] In order to achieve the above object, a heat exchange element according to the present invention is formed by stacking unit members in multiple stages, and the fluid to be heat exchanged is directed in directions orthogonal to each other. In a flowing heat exchange element, a liner consisting of a pair of parallel flat plates, a first rib group consisting of a plurality of ribs fixed between these liners and arranged at predetermined intervals, and the opposite side of the opposing surfaces of both liners. a second rib group consisting of a plurality of ribs fixed to either one of the surfaces of the ribs and arranged at predetermined intervals along a direction perpendicular to the ribs of the first rib group; The rib group and the second rib group are characterized in that either one is along the longitudinal direction of the liner.

[0008] Furthermore, a third rib group consisting of a plurality of ribs is fixed to the other of the opposing surfaces of both liners and arranged along the same direction as the second rib group and at predetermined intervals. The height of the second rib group and the third rib group may be set to half the height of the first rib group.

[0009]

[Operation] According to the above structure, since the unit member has the first rib group and the second rib group that are orthogonal to each other, it is difficult to deform when bent in any direction and has excellent strength. ing. Therefore, when manufacturing the heat exchange element by stacking the unit members, the unit members can be easily handled, and the manufacturing work can be easily performed. In addition, unit members,
By stacking them in the same direction, the heat exchange element can be manufactured, and compared to the conventional case where the unit members are stacked while changing their orientation alternately, the labor required for manufacturing can be significantly reduced.

[0010] Furthermore, when a third rib group is provided and the height of the second and third rib groups is set to half the height of the first rib group, in addition to the above effect, Since the ribs are arranged in three stages, the strength is further improved, and since the ribs of the unit members are stacked in contact with each other, stacking can be performed with good dimensional accuracy.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples will be explained in detail below with reference to the accompanying drawings showing examples. FIG. 2 is an overall perspective view of a heat exchange element E as an embodiment of the present invention, and FIG. 1 is a schematic perspective view showing a unit member U thereof. Referring to these figures, this heat exchange element E is of a cross-flow type in which fluids to be heat exchanged flow in directions perpendicular to each other. The unit member U is
It includes a pair of liners 1 and 2, a first rib group A bonded between both liners 1 and 2, and a second rib group B bonded to the upper surface of the liner 1.

Each of the liners 1 and 2 is a rectangular flat plate made of a paper material based on Japanese paper or a resin sheet, which has both heat conductivity and moisture permeability, and partitions two fluids to be heat exchanged. Ribs a and b of each rib group A and B are liners 1 and 2.
Made of non-metallic material with good bonding properties. One of the rib groups A and B runs along the longitudinal direction of each liner 1 and 2, and the other runs along the width direction of each liner 1 and 2. Each rib a,
b has a straight line shape and is bonded to the liners 1 and 2. Examples of the material for the ribs a and b include polymer materials, ceramics, fiber materials, wood, and paper.

The height of the ribs a and b that define the spacing between the liners is preferably about 1 to 4 mm, and the pitch between the ribs is preferably about 10 to 50 mm. If the double-row parallel flow path defined by these elements is too large, the rectification effect within the flow path will be small, and if it is too small, the pressure loss within the flow path will be large, so the balance between the two should be considered. , set to the above range.

The manufacturing of the unit member U will be explained with reference to FIGS. 3 and 4 showing the manufacturing line. This production line is flowing to the right, and a long longitudinal rib material is placed along the feeding direction of the liner material t (in the longitudinal direction of the liner material t) against the upper surface of the upper liner material t. A first zone 100 for adhering s to the upper surface of the lower liner material u so as to be perpendicular to the feeding direction of the liner material u (along the width direction of the liner material u) and for a predetermined interval in the feeding direction. In a separated state, a second zone 200 for adhering the width direction rib material a having a length equal to the liner width, and a lower step liner material t to which the longitudinal direction rib material s is bonded. By gluing the width direction rib material a glued to u,
A third zone 300 for obtaining a continuous unit member e, and a fourth zone 300 for obtaining a unit member U by cutting the continuous unit member e.
zone 400.

[0015] The first zone 100 includes a roll 10 for rib material.
, a rib material positioning means 11, a glue application means 13, an adhesion means 14, and an upper liner roll 15. The roll 10 for rib material is obtained by winding a plurality of long longitudinal rib materials s for forming ribs b, separated by a predetermined distance in the axial direction of the roll 10 for rib material. The upper liner roll 15 is a roll of a long liner material t for forming the upper liner 1.

The rib material positioning means 11 has a plurality of positioning grooves 11b extending in the line direction drilled at predetermined intervals, and a long table 11a disposed orthogonally to the line, and a long table 11a arranged from above the table 11a. It is constituted by a pressing roller 11c that conveys the longitudinal rib material s while pressing the longitudinal rib material s and introducing it into the positioning groove 11b. Positioning groove 1
1b is opened in a V-shape in the direction opposite to the feeding direction, making it easy to introduce the rib material t into the positioning groove 11b.

The glue applicator 13 works with a gluing roller 13a that applies glue to the lower surface of the longitudinal rib material s, and with the gluing roller 13a while pressing the longitudinal rib material s toward the gluing roller 13a. The press roller 13b conveys the rib material s to the downstream side of the line. The adhesive means 14 attaches the upper liner material t that has been unwound from the upper liner roll 20 and merged with the rib material positioning means 14a and the longitudinal rib material s positioned by the rib material positioning means 14a. , a pressing roller 14b that presses from below to adhere and convey to the downstream side of the line.
Consisted of. The rib material positioning means 14a has a structure that is upside down from the rib material positioning means 11.

The second zone 200 is composed of a lower liner roll 20, a direction changing roller 21, and a rib material bonding means 22. The lower tier liner roll 20 is a roll of a long liner material u for forming the lower tier liner 2 . The rib material adhesion means 22 includes a hopper 23 that stores lower ribs a having the same length as the width of the liner material U and discharges them one by one from below, and a hopper 23 that sucks and holds the ribs a discharged from the hopper 23. A rotary feeder 25 that rotates to bring the rib b into contact with the gluing roll 24 and then adhere it to the liner material u, and a rib a held by the rotary feeder 25.
A pressing roller 26 that presses the liner U against the liner U. The rotary feeder 25 has a plurality of rib holding holes drilled at equal intervals on the circumference of a cylindrical member 25a extending perpendicular to the line, and as the feeder rotates, the ribs a are sucked from the hopper 23 and the ribs a The three processes of gluing to the liner U and adhering to the liner U by releasing suction from the ribs a can be performed efficiently at the same time.

The third zone 300 includes a pair of transport rollers 30a and 30b for transporting the liner material t with longitudinal rib material s from the first zone 100, and a pair of transport rollers 30a and 30b for transporting the liner material t with longitudinal rib material s from the second zone 200. Glue application means 31 that applies glue to the rib material b; adhesive rollers 32a and 32b that join the liner material t with the longitudinal rib material s and the liner material U with the rib material b and sandwich them from above and below to bond them; Dryers 33a, 33 that blow hot air from above and below to dry the glue
It has b. The glue application means 31 includes a glue application roller 31a that applies the glue carried on the surface to the rib a while rotating;
Sliding contact with the liner side of the liner material u with the width direction rib material a,
It consists of a pressing roller 31b that conveys while pressing against the gluing roller 31a side.

The fourth zone 400 has a pair of conveying rollers 34 for conveying the continuous unit member e from the third zone 300.
a, 34b, and a cutting means 35 for cutting the continuous unit member e into a predetermined length. The cutting means 35 is
A cutter (not shown) such as a laser cutter or a water jet that cuts the element material e to obtain the unit member U every time the unit member U is fed by a predetermined length equal to the width of the unit member U; It has a position detection sensor (not shown) that detects the length. Since the cutting means 35 can accurately cut along the side surface of the rib a, it is possible to eliminate the need for end face cutting after lamination as in the prior art.

The heat exchange element A can be formed by stacking the unit members U manufactured on the above manufacturing line in the same direction and bonding them together. According to this embodiment, since the unit member U has the rib group A and the rib group B that are perpendicular to each other with the liner 2 in between, the unit member U is difficult to deform when bent in any direction. . That is, the unit member U is convenient to carry and handle, and manufacturing work is simplified. In addition, when stacking the unit members U during the manufacture of the heat exchange element U, the orientation of the unit members U is alternately set at 90 degrees as in the conventional method.
There is no need to change the unit members U one by one, and it is sufficient to stack the unit members U in the same direction, so the dimensional accuracy is good, the manufacturing work can be further simplified, and the manufacturing cost can be reduced. Furthermore, the unit members U can be manufactured using a simple line configuration that flows in the same direction as shown in FIG. 3, and manufacturing costs can be reduced from the equipment standpoint as well.

In the above embodiment, by narrowing the distances between the ribs a and between the ribs b at the ends of the unit member U, it is possible to obtain a unit member U with even better strength. FIG. 6 shows another embodiment of the invention. Referring to the figure, this embodiment differs from the embodiment in FIG.
A third rib group C consisting of a plurality of rows of ribs c spaced apart by a predetermined distance along the same direction as the second rib group B is fixed, and the ribs of the second rib group B and the third rib group C are fixed. The heights b and c are set to half the height of the rib a of the first rib group A.

This unit member U is manufactured by a manufacturing line shown in FIG. The manufacturing line in FIG. 7 is different from that in FIG. 1 because the lower surface of the liner U with the width direction rib material
A fifth step of gluing a plurality of long rib members w extending in the longitudinal direction.
This is because zone 500 has been added. That is, in FIG. 7, 40 is a rib material roll that unwinds the rib material w, and 41 is a glue application means that applies glue to the unwound rib material w. 42a and 42b are a pair of pressing rollers that sandwich and adhere the liner U with the rib material A in the width direction and the rib material W. The rest of the structure is substantially the same as that of the production line shown in FIG. 3, so the same reference numerals are used in the figure and the explanation thereof is omitted.

According to this embodiment, in addition to achieving the same effects as the embodiment of FIG.
Since the ribs a, b, and c are arranged in three stages with different directions, the product has even better strength and ease of handling, and does not lose its shape during manufacturing. Also, the second
By matching the rib b of the rib group B and the rib c of the third rib group C, the rib a of the first rib group A
As a result, the distance between the liners 1 and 2 can be made constant, and since the ribs are stacked while making contact with each other, stacking can be performed with good dimensional accuracy.

[0025] In addition, various changes can be made without changing the gist of the present invention.

[0026]

As described above, according to the heat exchange element according to claim 1, since the unit member has a pair of rib groups perpendicular to each other, it has excellent strength and is easy to handle during manufacturing. . In addition, by stacking unit members in the same direction, flow paths with alternate orientations can be obtained, which reduces manufacturing costs compared to the conventional case where the orientations are alternately changed. be able to.

Further, according to the heat exchange element according to claim 2, in addition to the above-mentioned effects, since the ribs of the unit member are structured in three stages, the unit member has even better strength. Furthermore, since the ribs of the unit members are stacked in contact with each other, stacking can be performed with good dimensional accuracy.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a unit member of a heat exchange element as an embodiment of the present invention.

FIG. 2 is a perspective view of a heat exchange element.

FIG. 3 is a schematic side view showing a manufacturing line for unit members.

FIG. 4 is a schematic plan view showing a manufacturing line for unit members.

FIG. 5 is a perspective view of a unit member of another embodiment.

FIG. 6 is a perspective view of a unit member of still another embodiment.

FIG. 7 is a schematic side view showing a manufacturing line for the unit member.

[Explanation of symbols]

U Unit member 1 Raina 2 Raina A First rib group B Second rib group C Third rib group a Rib b Rib c Rib

Claims (2)

[Claims] Claim 1: A heat exchange element formed by stacking unit members (U) in multiple stages, in which a fluid to be heat exchanged flows in directions orthogonal to each other, wherein the unit members (U) are stacked in multiple stages.
U) is a liner (1, 2) consisting of a pair of parallel flat plates.
and a first rib group (A) consisting of a plurality of ribs (a) fixed between these liners (1, 2) and arranged at predetermined intervals; The first rib group (A) is fixed to either one of the opposite surfaces.
A heat exchange element comprising: a second rib group (B) consisting of a plurality of ribs (b) arranged at predetermined intervals along a direction perpendicular to the ribs (a). Claim 2: The unit member (U) includes both liners (1,
2) A third rib group consisting of a plurality of ribs (c) fixed to the other surface opposite to the facing surface of and arranged along the same direction as the second rib group (B) and at predetermined intervals. (C), a second rib group (B) and a third rib group (C)
The heat exchange element according to claim 1, wherein the height of the first rib group (A) is set to half the height of the first rib group (A).