JPH08110076A - Heat exchanging element - Google Patents

Abstract

PURPOSE: To provide a low-cost heat exchanging element in which the productivity is improved without necessity of using adhesive in the case of laminating. CONSTITUTION: The front side end rib 3 of a rib for forming parallel channels is so formed in an L-shaped section as to perpendicularly cross the front and rear sides of a plate 1, the rib 3A of the rear side end is formed in an inverted L shaped section to form a unit member 4, the rib and the rib 3A are engaged to be coupled at the time of laminating the members 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate fin type heat exchange element formed by stacking layers.

[0002]

2. Description of the Related Art In recent years, a plate fin type heat exchange element has a wide heat transfer area per unit volume and is widely used as a relatively small and highly efficient heat exchange element. Due to the difference in the flow method, it is divided into cross flow type and counter flow type, and it is mainly used in air conditioning systems.

Conventionally, the basic construction of this type of heat exchange element has been disclosed in, for example, Japanese Patent Publication No. 47-19990. The configuration will be described below with reference to FIGS. 5 and 6.

As shown in the figure, the plate 101 is formed from a processed paper based on paper quality, and the fins 102 are formed by corrugating the same paper material as the plate 101, and the fins 102 are bonded to the plate 101 with an adhesive. The unit member 103 was formed, and the unit member 103 was adhered and laminated with an adhesive so that the parallel flow paths were alternately orthogonal to each other to form a cross-flow heat exchange element.

Next, a counterflow type heat exchange element in which unit members are laminated will be described with reference to FIGS. 7 and 8.

As shown in the figure, the corrugated fins 105 are provided on the surface of the plate 104 formed in a rectangular shape with a processed paper based on the quality of paper so that the primary side airflow flows.
04 is provided by adhering to a position of a little more than half in the longitudinal direction with an adhesive, the air passage is closed at the end of the plate 104, and the closing portion 106 is divided by an adhesive so that the air flow is divided into right and left. The unit member is formed by adhering, and the corrugated fins 105A and the closing portions 106A are also adhered to the back surface of the plate 104 in the same manner as the front surface by changing the position by 180 ° so as to face each other to form a secondary side air flow passage. 107 is formed, and the unit members 107 are bonded and laminated with an adhesive so that the flow paths are alternately opposed to each other, thereby forming a counterflow type heat exchange element.

The cross-flow type heat exchange element and the counter-flow type heat exchange element having the above-mentioned structure are both provided with the corrugated fins 105,
105A and corrugated fins 105, 1
Since 05A is bonded to the plate 104 with an adhesive, the productivity is not so high and the cost is high.

Therefore, in order to improve performance and productivity, a cross flow type structure in which a plate and a fin are integrally formed has been developed as disclosed in Japanese Patent Laid-Open No. 2-68878. .

The structure will be described below with reference to FIGS. 9 and 10.
Will be described with reference to. As shown in the drawing, fin-shaped ribs 109 forming parallel flow paths on one side of a plate-shaped plate 108 made of paper or the like, and fin-shaped ribs 109 arranged on the back surface of the plate 108 at right angles to the front surface.
A and A are integrally molded with resin to form the unit member 110, and the unit member 110 is adhered with an adhesive and laminated so that the air flow paths are orthogonal to each other to form the heat exchange element.

[0010]

In the structure of the conventional heat exchange element as described above, when the unit members 110 are laminated, the unit members 110 are laminated while being adhered with an adhesive, so that the equipment cost for adhering is reduced. There are problems that the cost increases due to the use of the adhesive, and that the coating of the adhesive is uneven and it takes a long time to dry.

The present invention solves the above problems, and an object of the present invention is to provide a heat exchange element which can reduce the production cost and improve the productivity.

[0012]

In order to achieve the above object, the first aspect of the heat exchange element of the present invention is to form parallel flow passages through which a heat medium flows on one surface of a flat plate made of paper or the like. A fin-shaped rib provided to do so, and a fin-shaped rib that is provided in the same manner as the rib on the surface so as to be orthogonal to the rib formed on the back surface of the plate,
A front surface side end rib formed in an L-shaped cross section provided at a front surface side end portion of the plate, and a back surface side end rib formed in an inverted L-shaped cross section provided in a back surface side end portion of the plate; And a unit member integrally formed of resin, and when the unit members are laminated, the front surface side end rib and the back surface side end rib are engaged and coupled.

The second means is a linear rib provided on one side of a flat plate made of paper or the like for forming a parallel flow path which is an inlet side flow path of the heat medium, and the inlet side flow. An arc-shaped rib provided so as to change the direction of the outlet-side flow passage corresponding to the passage, an inlet-side closing rib provided so as to close the side portion of the inlet-side flow passage, and an outlet-side rib facing the inlet-side A position obtained by converting the exit side closing rib provided so as to close the end, the linear rib and the arc-shaped rib provided on the back surface of the plate in the same manner as the front surface, and the entrance side closing rib and the exit side closing rib by 180 ° A concave portion is formed in the inlet side closing rib and the outlet side closing rib of the front surface, and a convex portion is provided in the inlet side closing rib and the outlet side closing rib of the back surface, and a unit member integrally molded of resin is provided, When stacking the unit members, Configuration and the heat exchange element engaging and coupling the concave and convex portions provided on the side closure rib and outlet closure rib.

[0014]

The present invention has the structure of the first means described above, and when the unit members are stacked, the unit members are stacked on the rear surface side of other unit members stacked above the front end ribs formed in the L-shaped cross section. By engaging the provided rear end ribs having an inverted L-shaped cross section, the unit members are joined and laminated.

Further, according to the structure of the second means, when the unit members are laminated, other unit members which are laminated from above in the concave portions formed in the inlet side closing rib and the outlet side closing rib provided on the front surface side are stacked. By engaging the convex portions formed on the inlet-side closing rib and the outlet-side closing rib provided on the back surface side, the unit members are combined and laminated.

[0016]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIG.
The description will be made with reference to FIG.

As shown in the drawing, fin-shaped front side ribs 2 are provided on one side of a flat plate 1 made of paper or the like to form a parallel flow path through which a heat medium flows, and the rear side of the plate 1 is provided with a surface. A fin-shaped rear surface side rib 2A similar to the front surface side rib 2 is provided so as to be orthogonal to the front surface side rib 2 formed in the above.

Of the ribs forming the parallel flow passages on the surface of the plate 1, the ribs provided at the ends are formed in an L-shaped cross section to form the front end ribs 3, and the ribs on the back surface side of the plate 1 are formed. The unit member 4 is formed by integrally forming a rib provided at an end portion into an inverted L-shape in cross section and forming a back end rib 3A.

In the above structure, when the unit members 4 are stacked, an inverted L-shaped cross section is provided on the back surface side of the other unit member 4 stacked above the front end ribs 2 formed in the L shape in cross section. The cross-flow type heat exchange element can be obtained by engaging the rear end ribs 2A formed in a shape and stacking the unit members 4 while connecting the unit members 4 to each other.

As described above, according to the heat exchange element of the first embodiment of the present invention, when the unit members 4 are stacked, the surface-side end ribs 3 having an L-shaped cross-section provided on the surface side of the plate 1 and the plate 1 are formed. Since the unit members are joined by engaging the back surface side end ribs 3A having an inverted L-shaped cross section provided on the lower surface side, it is not necessary to use an adhesive for stacking and the productivity is improved. An AC heat exchange element can be obtained.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

As shown in the drawing, a linear rib 6 is provided on one surface of a flat plate 5 made of paper or the like to form a parallel flow path which is an inlet side flow path of the heat medium, and corresponds to the inlet side flow path. Arc-shaped ribs 7 are provided corresponding to the outlet-side ends of the linear ribs 6 so as to change the direction of the outlet-side flow passage.

An inlet-side closing rib 8 for closing the side of the inlet-side flow passage and an outlet-side closing rib 9 for closing the outlet-side end facing the inlet-side flow passage are provided on the back surface of the plate 5. Similarly, the linear rib 6A and the arcuate rib 7A, and the inlet side closing rib 8A and the outlet side closing rib 9A are 18
The concave portion 10 is formed on the inlet side closing rib 8 and the outlet side closing rib 9 on the front surface, and the convex portion 11 is formed on the inlet side closing rib 8A and the outlet side closing rib 9A on the back surface. The unit member 12 is formed by integrally molding with resin.

In the above structure, when the unit members 12 are laminated, the other side of the unit members 12 laminated from above in the recesses 10 formed in the entrance-side closing ribs 8 and the exit-side closing ribs 9 on the entrance side While changing the direction of the unit member 12 by 180 ° so that the convex portions 11 formed on the closing rib 8A and the outlet side closing rib 9A are engaged, the unit member 1
It is possible to obtain a counter-flow type heat exchange element by bonding two layers and laminating them.

As described above, according to the heat exchange element of the second embodiment of the present invention, when the unit members 12 are stacked, the concave portions provided on the inlet side closing rib 8 and the outlet side closing rib 9 provided on the surface side of the plate 5 are formed. Since the unit members 12 are coupled to each other by engaging the convex portions 11 provided on the inlet side closing rib 8A and the outlet side closing rib 9A provided on the back side with the unit 10, it is necessary to use an adhesive agent for stacking. Since there are no joints, the number of joints becomes three, and the joint strength is increased to facilitate the assembly.

[0026]

As is apparent from the above-described embodiments, according to the present invention, the ribs forming the parallel flow paths that are orthogonal to the front surface side and the back surface side of the plate have L-shaped cross-sections on the surface side end ribs. And the back side end ribs are formed in an inverted L-shape in cross section to form a unit member, and when the unit members are stacked, the front side end ribs and the back side end ribs are engaged to be joined. Since they can be laminated, it is not necessary to use an adhesive, and a heat exchange element that can improve productivity at low cost can be provided.

Further, an inlet side flow passage and an outlet side flow passage are formed on the front surface and the back surface of the plate by a linear rib and an arc-shaped rib, and an inlet side closing rib and an outlet provided at the end of the front side inlet flow passage. The exit side closing rib provided at the end of the side flow passage is provided with a concave portion, and the inlet side closing rib and the outlet side closing rib on the rear surface side are provided with convex portions to form a unit member, and a concave portion between the unit members is formed at the time of stacking. Since the convex portions are engaged with each other and the unit members can be joined and laminated, the joining is performed at three points, the joining force is enhanced, and the counterflow type heat exchange element having good assembling property can be obtained.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing a state in which unit members of the heat exchange element of the first embodiment are stacked.

FIG. 3 is a perspective view showing a state of unit members at the time of stacking the heat exchange elements according to the second embodiment.

FIG. 4 is a perspective view showing a state in which unit members of the heat exchange element of the second embodiment are stacked.

FIG. 5 is a perspective view of a unit member of a conventional cross-flow type heat exchange element.

FIG. 6 is a perspective view of the same cross-flow type heat exchange element.

FIG. 7 is a perspective view of a unit member of the counterflow type heat exchange element.

FIG. 8 is a perspective view of the counterflow type heat exchange element.

FIG. 9 is a perspective view of a unit member of the plate and the fin-integrated heat exchange element.

FIG. 10 is a perspective view showing a laminated state of unit members of the plate and the fin-integrated heat exchange element.

[Explanation of symbols]

 1, 5 plate 2A, 2 rib 3 front side end rib 3A back side end rib 4,12 unit member 6A, 6 linear rib 7A, 7 arcuate rib 8A, 8 inlet side closing rib 9A, 9 outlet side closing Rib 10 concave 11 convex

Claims (2)

[Claims] 1. A fin-shaped rib provided on one surface of a flat plate made of paper or the like to form a parallel flow path through which a heat medium flows, and a rib formed on the front surface on the back surface of the plate. Fin-shaped ribs that are provided in the same manner as the ribs on the surface so as to be orthogonal to each other, front-side end ribs that are formed in an L-shaped cross-section and that are provided at the front-side end of the plate, and back-side ends of the plate. A unit member integrally provided with a resin and provided with a back side end rib formed in an inverted L-shape in cross section, the front side end rib and the back side end when stacking the unit members. A heat exchange element having a structure in which ribs are engaged and coupled. 2. A linear rib provided to form a parallel flow path which is an inlet side flow path of a heat medium on one surface of a flat plate made of paper or the like, and an outlet side corresponding to the inlet side flow path. Arc-shaped ribs provided to change the direction of the flow path,
An inlet side closing rib provided so as to close the side portion of the inlet side flow passage and an outlet side closing rib provided so as to close the end portion on the outlet side facing the inlet side, and a surface on the back surface of the plate. Similarly provided linear ribs and arc-shaped ribs and inlet side closing ribs and outlet side closing ribs are provided at positions converted by 180 °, and concave portions are formed in the inlet side closing ribs and the outlet side closing ribs on the surface, A unit member integrally formed with resin by providing a convex portion on the inlet side closing rib and the outlet side closing rib on the back surface, and a concave portion provided on the inlet side closing rib and the outlet side closing rib when the unit members are laminated; A heat exchange element having a structure in which convex portions are engaged and coupled.