JPH05157480A - Heat exchanging element - Google Patents

Abstract

PURPOSE:To reduce the air resistance generated at opening ends of passages as far as possible by providing edges for inclining outer surfaces on both side surfaces of a liner made of a paper material at laminated unit members for constituting a heat exchanging element. CONSTITUTION:A heat exchanging element E comprises unit members U1, U2 alternately laminated and having first, second passages L1, L2 in such a manner that the passages L1, L2 are extended in a direction perpendicular to each other. The members U1, U2 are respectively formed of liners 10, 20 molded in a square shape. A plurality of ribs 11a, 21a are adhered to the upper surfaces of the liners 10, 20 thereby to specify an interval between the liners 10 and 20. In this case, first edge materials 12 are adhered to both sides extended along both sides of the rib groups 11, 21 of the upper surfaces of the liners 10, 20, second edge materials 13 are adhered to both sides extended along a direction perpendicular to ribs 11a, 12a of the lower surfaces of the liners 10, 20 in such a manner that outer surfaces 2a, 3a are inclined.

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 countercurrent type, a counterflow type or an orthogonal type (oblique type) is known due to a difference in flow type of two fluids to be heat-exchanged. As the heat exchange element used in the above, a counterflow type or an orthogonal type is usually adopted. The basic structure is that a liner made of thin paper or the like for partitioning two fluids to be heat-exchanged is laminated with corrugated plate-like spacers made of pressure paper or the like forming a plurality of parallel flow paths sandwiched therebetween, and the whole is corrugated cardboard paper. It has a shape of structure.

This heat exchange element is manufactured by adhering 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 peaks and valleys, 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.

In addition, the completed heat exchange element is
Opening end face of each flow path by the amount of ribs provided (outside face of rib)
However, there was a problem that the air resistance of the air conditioner became large and the air supply / exhaust efficiency of the air supply fan and the exhaust fan decreased. The present invention has been made in view of the above problems, and provides a heat exchange element that suppresses a decrease in air supply / exhaust efficiency of an air supply fan or an exhaust fan and is easy to handle even when the liner is made of a paper material. The purpose is to do.

[0007]

In order to achieve the above-mentioned object, a heat exchange element according to the present invention is formed by stacking unit members in multiple stages, and one of two fluids to be heat-exchanged flows therethrough. One flow path and the other flowing second
In the heat exchange element having a flow path of, the unit member is fixed to one surface of the liner and a liner made of paper material along the same direction at predetermined intervals, A rib group composed of a plurality of ribs for partitioning, a first edge member fixed to both sides of the rib group on one surface of the liner, and a second edge member fixed to the other surface of the liner. And the outer side surfaces of the first edge material and the second edge material are inclined so that the air resistance of the opening end surface of each flow path is reduced.

[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
A first edge member, at least a portion of which extends along both ends of the rib, is fixed to the other surface of the liner, and a second edge member of which at least a portion extends in a direction intersecting both ends of the rib. Since it is fixed, 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.

In addition, according to the present invention, since the outer side surfaces of the first edge member and the second edge member are inclined so that the air resistance of the opening end surface of each flow path becomes small, each flow rate is reduced. The air resistance generated at the open end face of the passage can be reduced as much as possible.

[0010]

Embodiments will be described in detail below with reference to the accompanying drawings showing embodiments. 1 is a perspective view of a main part of a heat exchange element E as an embodiment of the present invention, FIG. 2 is a perspective view of the heat exchange element E as a whole, and FIG. 3 is a unit member U thereof.
1 is a schematic perspective view showing U1 and U2.

With reference to these figures, this heat exchange element E has a first flow through which one of two fluids to be heat-exchanged flows.
Is a cross-flow type in which each of the flow paths L1 and L2 extends in a direction orthogonal to each other. Unit members U1 and U in this embodiment
2 are the same and are provided with liners 10 and 20 each formed in a substantially square shape.

The liners 10 and 20 have both heat conductivity and moisture permeability, and are based on, for example, Japanese paper, for example, 0.1.
It is a paper material such as a thin paper having a thickness of about mm to 0.2 mm impregnated with calcium chloride or lithium chloride to impart water absorbability, and partitions two fluids to be heat-exchanged. As the shape of the liners 10 and 20, in addition to a square as in the present embodiment, a rhombic or rectangular rectangular shape can be adopted.

A plurality of ribs 11a and 21a are adhered to the upper surfaces of the liners 10 and 20.
The rib groups 11 and 21 are formed by a and 21a. Each of the ribs 11a and 21a is made of a non-metallic material having a good bonding property with the liners 10 and 20, and is arranged substantially parallel to the change of the liners 10 and 20 with a certain distance therebetween. .. Examples of the material of the 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 ribs 11a and 21a defining the spacing between the liners 10 and 10 and the liners 20 and 20 is preferably about 1 to 4 mm, and the ribs 11a and 11a and ribs 21a, 2
The pitch between 1a is preferably about 10 to 50 mm. The double-row parallel channels defined by these elements are
If it is too large, the rectification effect in the flow paths L1 and L2 is small,
If it is too small, the pressure loss in the flow paths L1 and L2 increases, so the above range is set in consideration of the balance between the two.

Referring to FIGS. 1 and 3, the liner 1 is
First edge members 12 and 22 substantially parallel to the ribs 11a and 21a are adhered to both sides of the upper surface of the ribs 0 and 20 extending along both sides of the rib groups 11 and 21, respectively.
On both sides of the lower surface of 0, 20 extending along the direction intersecting the ribs 11a, 21a, the second edge member 13,
23 is glued.

Each of the first edge members 12 and 22 and the second edge members 13 and 23 is formed of the same material as that of the 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 of the height H of the ribs 11a and 21a, respectively.
When the unit members U1 and U2 are stacked, the lower unit member U
2 (U1) first edge member 22 (12) and upper unit member U
The second edge material 13 (23) of 1 (U2) is laminated in a state of being in close contact.

Here, in this embodiment, the first edge member 1
2, 22 and the respective outer side surfaces 2a, 3a of the second edge members 13, 23
The upper and lower widthwise ends of each flow path L with respect to the widthwise middle part.
It is inclined to the 1 and L2 side. Further, in the present 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 construction, the other unit member U2 is laminated on the one unit member U1 shown in FIG. 3 by alternately changing the direction by 90 °, as shown in FIGS. The heat exchange element E can be constructed.
Therefore, the unit members U1 and U2 are less likely to be deformed by bending in all directions. As a result, the unit members U1 and U2 can be easily handled when the unit members U1 and U2 are stacked to manufacture the heat exchange element E. Therefore, the manufacturing work can be easily performed. Moreover, in this embodiment, since the unit members U1 and U2 are formed in a square shape, one unit member U1 and the other unit member U2 can be formed of a single type of member.

In addition, according to this embodiment, the flow paths L1 and L
The outer surface 2a of each of the first edge members 12 and 22 and the second edge members 13 and 23, so that the air resistance of the opening end surface of the second edge member 2 is small.
Since 3a is inclined, the air resistance generated at the open end faces of the flow paths L1 and L2 can be reduced as much as possible.
As a result, it is possible to prevent the air supply and exhaust efficiency of the air supply fan and the exhaust fan from being lowered.

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.

Next, another embodiment of the present invention shown in FIGS. 4 and 5 will be described. FIG. 4 is an overall perspective view of a heat exchange element E as another embodiment, and FIG. 5 is a schematic perspective view showing its unit members U1 and U2. As shown in FIGS. 4 and 5, the heat exchange element E of this embodiment
Includes a first flow path L1 through which one of the two fluids to be heat-exchanged flows and a second flow path L2 through which the other fluid flows, and each of the flow paths L1 and L2 is connected to the introduction side of each fluid. It is a counterflow type in which the middle part with the discharge side is bent so as to be a counterflow.

In the embodiment shown in FIGS. 4 and 5, the unit members U1 and U2 are liner 1 molded in a regular hexagon.
The ribs 11a and 21a of the rib groups 11 and 21 which are provided with 0 and 20 and are bonded to the unit members U1 and U2 are
The flow paths L1 and L2 are 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. Also, as shown in FIG.
On both sides of the rib groups 11 and 21 on the upper surface of 0, a part is along the both ends of the ribs 11a and 21a, and the rest is the rib 11
1st edge material 12 and 2 which extends along the intermediate part of a, 21a
2 is adhered, and the lower surfaces of the liners 10 and 20 are partially extended along a direction intersecting both ends of the ribs 11a and 21a, and the remaining portions are extended along intermediate portions of the ribs 11a and 21a. The second edge members 13 and 23 are adhered. The heights h1 and h2 of the first edge members 12 and 22 and the second edge members 13 and 23 are the ribs 11 respectively.
It is set to half the height H of a and 21a, and when the unit members U1 and U2 are stacked, the lower unit member U2 (U
1) the first edge member 22 (12) and the upper unit member U1 (U
The second edge member 13 (23) of 2) is laminated in a state of being in close contact.

Further, also in this embodiment, the first edge member 1
2, 22 and the respective outer side surfaces 2a, 3a of the second edge members 13, 23
Both ends in the width direction are inclined toward the flow paths L1 and L2 with respect to the middle portion in the width direction. Also in the embodiment shown in FIGS. 4 and 5, the strength of each unit member U1, U2 can be improved. Further, it is possible to reduce the air resistance generated at the opening end faces of the flow paths L1 and L2 as much as possible, and suppress the reduction of the air supply / exhaust efficiency of the air supply fan or the exhaust fan, and to reduce the operating noise and It also leads to power saving.

Further, when the embodiment shown in FIGS. 4 and 5 is adopted, the two fluids to be heat-exchanged become counterflows at the midpoints of the first and second flow paths L1 and L2. Therefore, as a result of increasing the effective rate of the heat exchanger per unit flow rate, it is possible to improve the heat exchange efficiency. It should be noted that any of the above-described embodiments is merely a preferred specific example of the present invention. For example, the sum of the height h1 of the first edge member 12 and the height h2 of the second edge member 13 is the height H of the rib 11a. In setting the same as, the height h2 of the second edge member 13 is set higher than the height h1 of the first edge member 12 and the unit members U1 and U2 are joined together. The side surface extending in the longitudinal direction of the first edge member is joined to the side surface extending in the longitudinal direction of the second edge member of the other unit member arranged in a direction intersecting with the one unit member. It goes without saying that various changes can be made without changing the gist.

[0025]

As described above, according to the heat exchange element of the present invention, the first edge member is fixed to one surface of the liner forming the unit member of the heat exchange element, and the other surface of the liner is fixed. In addition, since the second edge member extending in the direction intersecting with the first edge member is fixed, the second edge member is not easily deformed by bending in all directions and is excellent in 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.

In addition, according to the present invention, as a result of being able to reduce the air resistance generated at the opening end face of each flow path as much as possible, it is possible to suppress a decrease in the air supply / exhaust efficiency of the air supply fan or the exhaust fan. This also reduces driving noise and saves power. Therefore, according to the present invention, it is possible to prevent the supply and exhaust efficiency of the supply fan and the exhaust fan from decreasing.
Even when the liner is made of a paper material, it is possible to provide a heat exchange element that is easy to handle.

[Brief description of drawings]

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

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

FIG. 3 is a perspective view showing a unit member constituting the heat exchange element.

FIG. 4 is a perspective view of a heat exchange element according to another embodiment of the present invention.

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

[Explanation of symbols]

 E Heat Exchange Element U1 Unit Member U2 Unit Member 10 Liner 11 Rib Group 11a Rib 21a Rib 12 First Edge Material 13 Second Edge Material 20 Liner 21 Rib Group 22 First Edge Material 23 Second Edge Material L1 First Channel 1 L2 Channel 2

Claims (1)

[Claims] 1. A first flow path (L1), which is formed by stacking unit members (U1, U2) in multiple stages, in which one of two fluids to be heat-exchanged flows and a second flow path (in which the other flows). In the heat exchange element with (L2), the unit members (U1, U2) are liner (10, 20) made of paper material, and on one surface of the liner (10, 20) at predetermined intervals. A rib group (11, 21) consisting of a plurality of ribs (11a, 21a) that are fixed along the same direction and partition each flow path (L1, L2), and one of the liners (10, 20). Face rib group (11, 2
The first edge members (12, 22) fixed to both sides of 1) and the second edge members (13, 23) fixed to the other surface of the liner (10, 20) are respectively provided, Each outer surface (2a, 3a) of the first edge material (12, 22) and the second edge material (13, 23) so that the air resistance at the opening end surface of each flow path (L1, L2) becomes small. A heat exchange element characterized by being inclined.