JP2000227290A - Heat exchange segment and gas-to-gas heat exchange element obtained by laminating it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a heat exchange segment adapted to formation of a gas- to-gas heat exchange element of a laminated structure capable of easily handling with scarce surface outer deformation (deformation like a shape collapse), freely compression deforming in a laminating direction and remarkably improving a heat exchanging efficiency capable of conducting three-dimensional convection and the heat exchange element. SOLUTION: The heat exchange element 1 is formed by laminating a plurality of heat exchange segments 2. The segment 2 is constituted by fixing an elastic spacer 5 to a heat exchange panel 4 having coupling spacers 6 having many gas dispersing holes and a gas channel forming hollow material 7. The spacer 5 is fixed to dispose both ends of the one gas channel 10 of a longitudinal direction in a direction perpendicular to the one gas channel 10, and pressed onto an upper surface of the panel 4 of a lower stage (lower layer) to form another gas channel 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange segment and a gas-to-gas heat exchange element in which the heat exchange segments are stacked.

[0002]

2. Description of the Related Art Conventionally, as is generally known, air-to-air heat exchangers are mounted on air-conditioning ventilation fans used in houses and offices. For this purpose, various types of heat exchange elements are already known.

[0003] For example, Japanese Patent Application Laid-Open No. Hei 5-313492 discloses a heat exchange element formed by stacking a plurality of heat exchange segments each having a corrugated spacer fixed to a heat exchange sheet (see FIG. 6 in the publication). See)
A heat exchange sheet formed by laminating a plurality of heat exchange segments in which resin straw spacers having resilience (hereinafter, such spacers having resilience are referred to as elastic spacers) are fixed at predetermined intervals on a heat exchange sheet. An element is also disclosed (see FIGS. 1 and 8 in the publication).

Further, Japanese Patent Application Laid-Open No. 61-175487 discloses a heat exchange element in which a plurality of heat exchange segments each having a rigid spacer such as a rectangular solid spacer fixed to a heat exchange sheet are laminated. (See FIGS. 1 to 5 in the publication).

[0005]

However, in each of these heat exchange elements, the direction (XY) in which one air (primary air) and the other air (secondary air) for heat exchange are orthogonal to each other.
It is difficult to perform three-dimensional convection because of the so-called cross-flow type that flows in the axial direction). In some cases, there is a disadvantage that further improvement in heat exchange efficiency cannot be expected.

Further, such a heat exchange segment is formed by fixing rigid spacers or elastic spacers in the same direction to one side of a thin heat exchange sheet made of Japanese paper or the like so as not to cross each other. In addition, deformation such as shape collapse (hereinafter referred to as out-of-plane deformation) is likely to occur, and therefore, when the segments are stacked or temporarily stored before being stacked, the handling is troublesome. At the same time, when laminating, each layer must be rotated by 90 degrees, and the operation is troublesome.

In view of the above drawbacks, the present invention has been intensively studied in order to solve the drawbacks. As a result, a gas flow passage having a rectangular cross-sectional shape arranged so as to sandwich a plurality of connecting spacers having gas dispersion holes. By fixing a plurality of elastic spacers in a specific relationship as described later on a heat exchange panel configured by fixing the hollow body for use and the connection spacer, a heat exchange element capable of three-dimensional convection is formed. It has been found that a heat-exchange segment that can be easily handled and has less out-of-plane deformation can be obtained, and the present invention has been completed based on this point.

[0008]

That is, the heat exchange segment according to the present invention is, as described in claim 1, in a heat exchange segment for forming a gas-to-gas heat exchange element. A plurality of elastic spacers are formed on a heat exchange panel formed by fixing a hollow gas flow passage forming hollow body having a rectangular cross-section and the connection spacers arranged so as to sandwich each of the plurality of connection spacers having a. It is characterized in that both ends in the longitudinal direction are fixed at predetermined intervals so as to be arranged in a direction intersecting with the flow path extending direction of the hollow body for forming a gas flow path. Preferably, the elastic spacer is fixed only to one surface of the heat exchange panel.

Further, a heat exchange element according to the present invention is characterized in that, as described in claim 3, the heat exchange segments according to claim 1 or 2 are laminated.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG.
The heat exchange segment 2 is formed by laminating the four heat exchange segments 2 on the base panel 3 and the four elastic spacers 5 are fixed to the lower surface of the heat exchange panel 4 at equal intervals with a suitable adhesive. It is formed.

The heat exchange panel 4 has three connecting spacers 6 arranged at predetermined intervals in the X-axis direction in the drawing, and four connecting spacers 6 arranged in the same direction so as to sandwich each of these connecting spacers 6. A hollow body 7 for forming a gas flow path, and
Both are fixed with an appropriate adhesive.

The gas flow path forming hollow body 7 having both ends opened in the Y-axis direction in the figure is formed by extrusion-molded thin (for example, about 0.1 mm) resin (for example, polystyrene, polypropylene, etc.). ) It is formed of a hollow body and has a rectangular cross section as shown in the figure.

The elastic spacer 5 is made of, for example, PE
It is composed of a resin-made circular hollow bar having resilience (or elasticity) such as a straw made of T or polypropylene, and both ends of the opening in the longitudinal direction (or the entire length direction) are formed with gas flow paths. The hollow body 7 is fixed so as to be arranged in a direction (X-axis direction in the drawing) orthogonal to the direction in which the hollow body 7 extends (Y-axis direction in the drawing).

The connecting spacer 6 is formed of a porous block made of a foamed resin or ceramic, and has a large number of gas dispersion holes and a concave portion 8 as shown in the drawing. It is fixed. The base panel 3 has the same configuration as the heat exchange panel 4 described above.

For this purpose, a suitable sealing member 9 (for example, a pipe, an adhesive tape or a U-shaped plate) is inserted into the recess 8 (the entrance in the Y-axis direction in the figure) and fixed with a suitable adhesive. At this time, the stacked heat exchange segments 2 are kept in a state where they are compressed in a predetermined direction in the stacking direction (the Z-axis direction in the drawing), and therefore, after the sealing member 9 is fixed. In the above, the upper (upper layer side) elastic spacer 5 is pressed against the upper surface of the lower (lower layer side) heat exchange panel 4 so as to be orthogonal to the extension direction of one of the gas passages 10 (the Y-axis direction in the drawing). The other gas flow path 11 is formed (in the illustrated X-axis direction).

As described above, the heat exchange segment 2 according to the present invention is a heat exchange panel 4 which is a single rigid body composed of a plurality of hollow bodies 7 for forming gas flow paths and the connecting spacers 6.
A plurality of elastic spacers 5 are fixed to the lower surface of the gasket so that both ends in the longitudinal direction thereof are arranged in a direction (X-axis direction in the drawing) orthogonal to the extending direction (Y-axis direction in the drawing) of the gas flow path 10. Therefore, out-of-plane deformation is unlikely to occur, and compression deformation in the stacking direction (Z-axis direction in the drawing) can be freely performed.

Further, since the elastic spacers 5 are fixed only on the lower surface side of the heat exchange panel 4, the heat exchange elements 1 having a laminated structure can be formed by being stacked in the same direction as shown in the figure. And therefore, as before, 90
The lamination work is easier than in the case of stacking in a rotated state. In addition, since the out-of-plane deformation hardly occurs during lamination, handling is easy even from this point.

In addition, according to the heat exchange element 1 having the laminated structure, the gas A is supplied to one of the gas passages 10 and
The gas B is supplied to the other gas flow path 11 formed in a direction orthogonal to the above (X-axis direction in the drawing), that is, for example, air from one room (contaminated wet air) is supplied to one gas flow path 10. And heat can be exchanged by supplying air (fresh air) from the outside to the other gas flow path 11 at this time, as shown in FIG.
The gas B flows from the lower layer (lower side) to the upper layer (upper side) through the gas dispersion holes of the connecting spacer 6.

Therefore, three-dimensional convection is possible as in the case of the gas A flowing in the Y-axis direction and the gas B flowing in the X-axis direction and the Z-axis direction. Even if the gas A or B has a temperature difference in the vertical and horizontal positional relationship, it can be reduced and the heat exchange efficiency can be further improved.

Although one embodiment has been described above, in the present invention, the heat exchange panel 4 may have any shape such as a square, a rectangle, or a rhombus in plan view.

In the case of a rectangular or square shape, the hollow body 7 for forming a gas flow passage and the elastic spacer 5 are arranged in directions orthogonal to each other, and in the case of a rhombus or a parallelogram. , Arranged in a non-orthogonal direction. However, in both cases, they are common in that they are arranged in the direction in which they intersect.

The cross-sectional shape of the gas flow passage forming hollow body 7 includes a rectangle or a similar shape, that is, it may be a rectangular shape. , Are provided in a predetermined size as needed.

As long as the elastic spacer 5 has a restoring property (or elasticity), it may be a solid body, a hollow body, or the like, and its shape may be circular, square, or the like. Any of these may be used. In addition, the material is similarly selected as necessary, such as resin or rubber.

Further, the elastic spacers 5 may be fixed not only on one side (upper side or lower side) of the heat exchange panel 4 but also on both sides thereof (upper and lower sides). Heat exchange segments and the heat exchange panels 4 may be alternately stacked to form a heat exchange element.

The connecting spacer 6 is not made of a porous block (see FIG. 1). For example, as shown in FIG. A metal H-shaped member or the like may be used, and if necessary, the density of the gas dispersion holes perforated in one connecting spacer 6 and that of the other connecting spacer 6 may be changed to a predetermined value.

The base panel 3 does not use the heat exchange panel 4, but may use a general plate instead of the heat exchange panel 4. Further, the number of layers of the heat exchange segments 2, the elastic spacers 5, and the gas flow The number of the hollow bodies 7 for forming a path is appropriately selected as needed, and the gases A and B for exchanging heat may be air, an inert gas, or another type of gas.

[0027]

As described above, according to the first and second aspects of the present invention, the compression deformation in the stacking direction, which is suitable for forming a heat exchange element having a gas-to-gas stacked structure, is free. To obtain a heat-exchange segment suitable for obtaining a heat-exchange element which is not easily generated due to out-of-plane deformation, is easy to handle, and is capable of three-dimensional convection and further improving heat exchange efficiency. Can be.

According to the second aspect of the present invention, in addition to the above-described effects, lamination in the same direction (lamination is performed so that each layer is not rotated by 90 degrees) without being combined with another type of heat exchange segment. The effect of being able to do is obtained.

According to the third aspect of the present invention, three-dimensional convection is possible and the heat exchange efficiency is high.
A heat exchange element having a laminated structure suitable for use in a heat exchanger of an air-conditioning ventilation fan device can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a heat exchange element formed by stacking heat exchange segments.

FIG. 2 is a diagram showing a flow state of gas B.

FIG. 3 is a longitudinal sectional view showing another example of the connection spacer.

[Explanation of symbols]

 1: heat exchange element 2: heat exchange segment 3: base panel 4: heat exchange panel 5: elastic spacer 6: connecting spacer 7: hollow body for forming a gas flow path 10: gas flow path 11: gas flow path 12: gas dispersion Hole

Claims (3)

[Claims] In a heat exchange segment for forming a gas-to-gas heat exchange element, a gas flow passage having a rectangular cross-sectional shape arranged to sandwich each of a plurality of connecting spacers having gas dispersion holes. A plurality of elastic spacers are arranged on a heat exchange panel formed by fixing the forming hollow body and the connection spacer to each other in such a direction that both ends in the longitudinal direction intersect the flow path extending direction of the gas flow forming hollow body. A heat exchange segment which is fixed at a predetermined interval so as to be removed. 2. The heat exchange segment according to claim 1, wherein an elastic spacer is fixed to only one surface of the heat exchange panel. 3. A heat exchange element comprising the heat exchange segments according to claim 1 laminated.