JPH0534089A - Heat exchanging element - Google Patents

Abstract

PURPOSE:To improve strength and facilitate the handling of a heat exchanging element even when a liner is formed of paper material by a method wherein respective rim members, extending in directions intersecting with each other, are arranged on both sides of respective liners constituting a pair of unit members in the heat exchanging element while the total sum of the heights of respective rim members is specified. CONSTITUTION:The groups 11, 21 of ribs consisting of a plurality of bent ribs 11a, 21a and defining respective flow passages are arranged on one side of respective liners 10, 20 formed of paper material respectively on a pair of unit members U1, U2 constituting a heat exchanging element. Respective first rim members 12, 22, extending along both ends of respective bent ribs 11a, 21a, are arranged on both sides of respective groups of ribs 11a, 21a. Further, respective second rim members 13, 23, extending in the directions intersecting with both ends of respective bent ribs 11a, 21a, are arranged on the other sides of respective liners 10, 20. The total sum of respective heights h1, h2 of respective first and second rim members 12, 22, 13, 23 is so set as to be equal to the height H of respective bent ribs 11a, 21a. By this method, the strength against the bending deformations of all directions can be improved.

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]

2. Description of the Related Art As a heat exchange element, a counterflow type, a counterflow type or a crossflow type (oblique type) is known because of the difference in flow type of two fluids to be heat-exchanged. Of these, the counterflow type is known to have the best heat exchange efficiency because the efficiency of the heat exchanger is high.
An example is known in which such a counter-flow type heat exchange element is adopted in an air conditioner (for example, Japanese Patent Publication No. 1-251414).

The basic structure is such that a liner made of thin paper or the like for partitioning two fluids to be heat-exchanged is laminated with a corrugated plate-like spacer made of pressure paper or the like forming a plurality of flow passages sandwiched between the liner. It has a corrugated paper structure. This heat exchange element is manufactured by bonding a spacer obtained by cutting a long corrugated plate to a liner obtained by cutting a long corrugated plate. When cutting in a direction that is not parallel to, the corrugation of the end face is likely to be crushed, and in the air-to-air heat exchanger, the pressure loss is large due to the deformation of the end face during cutting.
In addition, there is a problem in that the yield of the material is poor because a predetermined size and shape are obtained by cutting.

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

[0005]

It is preferable to use a paper material such as thin paper as the material of the liner which constitutes the unit member of the heat exchange element because of its excellent heat conductivity and moisture permeability and low cost. However, when the liner is made of a paper material, the unit member of the heat exchange element has ribs only in one direction, and therefore is easily deformed by bending in the direction intersecting with the ribs. Such a unit member, which is easily deformed, is difficult to carry and handle, and it takes more time to manufacture.

The present invention has been made in view of the above problems, and an object thereof is to provide a heat exchange element which is easy to handle even when the liner is made of a paper material.

[0007]

In order to achieve the above object, a heat exchange element according to the present invention is formed by stacking a pair of unit members in multiple stages, and one of two fluids to be heat-exchanged. A first flow path and a second flow path in which the other flows are provided, and the first flow path and the second flow path cross each other on the introduction side and the discharge side of each fluid, and the middle part In the heat exchange element that is bent so as to be in a counter flow, the pair of unit members are liners each made of a paper material, and on one surface of the liner,
A rib group, which is fixed along the same direction at predetermined intervals and is formed by a plurality of bent ribs that partition the flow paths, and is fixed to both sides of the rib group on one surface of the liner, at least a part of which is A first edge member extending along both ends of the bending rib and a second edge member fixed to the other surface of the liner and extending at least partially in a direction intersecting both ends of the bending rib. It is characterized in that the sum of the height of the first edge material and the height of the second edge material is set to be equal to the height of the bending rib.

[0008]

According to the heat exchange element having the above structure, one surface of the liner forming the unit member of the heat exchange element is
At least a portion extending along both ends of the bending rib
Of the liner is fixed to the other surface of the liner, at least a part of which extends in a direction intersecting both ends of the bending rib, so that it can be bent in any direction. Hard to deform and excellent in strength. Therefore,
When the unit members are stacked to manufacture the heat exchange element, the unit members can be easily handled, and the manufacturing work can be easily performed.

[0009]

Embodiments will be described in detail below with reference to the accompanying drawings showing embodiments. FIG. 1 is an overall perspective view of a heat exchange element E as one embodiment of the present invention, and FIG. 2 is a unit member U thereof.
1 is a schematic perspective view showing U1 and U2. With reference to these drawings, the heat exchange element E includes a first flow path L1 through which one of two fluids to be heat-exchanged flows and a second flow path L2 through which the other fluid flows, and each flow Each of the passages L1 and L2 is a counterflow type in which a middle portion between the introduction side and the discharge side of each fluid is bent so as to form a counterflow.

The unit members U1 and U2 are provided with liners 10 and 20 formed in regular hexagons, respectively. Liner 1
Numerals 0 and 20 are water-absorbent by impregnating calcium chloride or lithium chloride into a paper material such as a thin paper having a base of Japanese paper, for example, about 0.1 to 0.2 mm, which has both heat conductivity and moisture permeability. Is provided to partition two fluids to be heat-exchanged. As the shape of the liners 10 and 20, in addition to the regular hexagonal shape as in this embodiment, a hexagonal shape in which each side has a different length can be adopted.

A plurality of bending ribs 11a and 21a are adhered to the upper surfaces of the liners 10 and 20, and the rib groups 11 and 21 are formed by these bending ribs 11a and 21a. Each bending rib 11a, 21a is provided with a liner 10, 2
It is composed of a non-metallic material that has a good bondability with 0,
Both of the flow paths L1 and L are separated by a certain distance.
Each of the fluids 2 is bent so that the introduction side and the discharge side of each fluid become a cross flow and the middle part becomes a counter flow. Examples of the material of the bending ribs 11a and 21a include polymer materials, ceramics, fiber materials, wood, paper materials and the like.

When the unit members U1 and U2 are laminated, the height H of the bending ribs 11a and 21a that define the spacing between the liners 10 and 10 and the liners 20 and 20 is 1 to 4 mm.
It is preferable that the bending ribs 11a, 11a and the bending ribs 21a, 21a have a pitch of 10 to 50 mm.
A degree is preferable. If the double-row parallel flow passages defined by these elements are too large, the rectifying effect in the flow passages L1 and L2 is small, and if too small, the pressure loss in the flow passages L1 and L2 is large. The above range is set in consideration of the balance.

Referring to FIG. 2, on both sides of the rib groups 11 and 21 on the upper surfaces of the liners 10 and 20, a part is along the both ends of the bending ribs 11a and 21a, and the rest is the bending ribs 11a and 21a. 21a of 1st edge materials extended along the middle part of 21a
2 and 22 are adhered to each other, and the lower surfaces of the liners 10 and 20 are partially along the direction intersecting both ends of the bending ribs 11a and 21a, and the rest are the bending ribs 11a and 21a.
The second edge members 13 and 23 extending along the middle portion of 21a are bonded.

Each of the first edge members 12 and 22 and the second edge members 13 and 23 is formed of the same material as the bending ribs 11a and 21a. Here, the heights h1 and h2 of the first edge members 12 and 22 and the second edge members 13 and 23 are set to half the height H of the bending ribs 11a and 21a, respectively, and the unit member U1. , U2 are laminated in a state where the first edge member 22 (12) of the lower unit member U2 (U1) and the second edge member 13 (23) of the upper unit member U1 (U2) are in close contact with each other. It is supposed to be done. In this embodiment, each of the edge members 12 and 22 and the second edge members 13 and 23,
A notch g is provided in a portion that constitutes two opposite corners of the heat exchange element E and two sides that oppose each other in a direction orthogonal to a direction in which the two opposite corners face each other, and the notch g is provided. A bolt (not shown) is attached from the side of the heat exchange element E so that the heat exchange element E can be easily and quickly assembled.

According to the above structure, the unit member U1 is laminated on the unit member U2 shown in FIG. 2 by alternately changing the direction by 90 °. E can be configured. As described above, in this embodiment, the first edge members 12 and 22 are adhered to the upper surfaces of the liners 10 and 20, and the first edge members 12 and 22 are partially attached to the lower surfaces of the liners 10 and 20. Since the second edge members 13 and 23 extending in the direction intersecting with the unit members U1 and U2 are less likely to be deformed by bending in all directions, the unit members U1 and U2 can be easily carried. Is convenient and the manufacturing work is simple.

Further, in this embodiment, each edge member 12,
Since the notch g is provided in the heat exchange element E of the second and second edging members 13 and 23 and the bolt can be attached to the notch g from the side of the heat exchange element E, the notch g Positioning becomes easy and the number of stacking steps is reduced. Therefore, the heat exchange element E can be easily and quickly assembled, and the manufacturing cost is significantly reduced.

Furthermore, according to the present embodiment, the two fluids to be heat-exchanged are counter-currents at the midpoints of the first and second flow paths L1 and L2, so that the heat-exchange time per unit flow rate is increased. As a result, the heat exchange efficiency can be improved. The above-described embodiment is merely a preferred specific example of the present invention. For example, the sum of the height h1 of the first edge members 12 and 22 and the height h2 of the second edge members 13 and 23 is the bending rib 11a. Two
When setting the height H equal to 1a, the second edge 1
The height h2 of 3, 23 is the height h1 of the first edge members 12, 22.
It goes without saying that various changes can be made without changing the gist of the present invention, such as setting it higher.

[0018]

As described above, according to the heat exchange element of the present invention, at least a part of the liner forming the unit member of the heat exchange element extends along both ends of the bending rib. Since the first edge member is fixed and the second edge member that extends at least partially in the direction intersecting both ends of the bending rib is fixed to the other surface of the liner,
It is not easily deformed by bending in any direction and has excellent strength. Therefore, the unit members can be easily handled when the unit members are stacked to manufacture the heat exchange element, and the manufacturing operation can be easily performed.

Therefore, according to the present invention, it is possible to provide a heat exchange element which is easy to handle even when the liner is made of a paper material.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing a unit member constituting the heat exchange element.

[Explanation of symbols]

 U1 unit member U2 unit member 10 liner 20 liner 11 rib group 21 rib group 11a bending rib 21a bending rib 12 first edge material 13 second edge material 22 first edge material 23 second edge material h1 first Edge material height h2 Height of second edge material H Height of bending rib

Claims (1)

Claims: 1. A first flow path (L1) formed by stacking a pair of unit members (U1, U2) in multiple stages, and one of two fluids to be heat-exchanged and the other. Second flow path
(L2), the first flow path (L1) and the second flow path (L2) are such that the introduction side and the discharge side of each fluid are crossflows with each other, and the middle part is a counterflow. In the bent heat exchange element, the pair of unit members (U1, U2) are liner (10, 20) each made of paper material, and the liner (10, 20) has a predetermined interval on one surface of the liner (10, 20). The rib group (11, 21) consisting of a plurality of bent ribs (11a, 21a) that are fixed along the same direction for each and partition the flow paths (L1, L2), and the liner (10, 20). The above rib group (11, 2
1) Both sides are fixed and at least a part of the bending rib
First edge members (12, 2) extending along both ends of (11a, 21a)
2) and a second edge member (13, 23) fixed to the other surface of the liner (10, 20) and extending at least partially in a direction intersecting both ends of the bending rib (11a, 21a). And the height (h1) of the first edge material (22, 12) and the second edge material (13, 2), respectively.
A heat exchange element characterized in that the sum of the height (h2) of 3) is set equal to the height (H) of the bending ribs (21a, 11a).