JPH11142082A - Heat-exchanging element and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a heating medium from leaking without using an adhesive for the fixation and the lamination between a unit member and a cut plate, and at the same time, provide an inexpensive heat-exchanging element of which the productivity is high. SOLUTION: This heat-exchanging element is equipped with a first unit member 5 wherein fin-form surface side ribs 3 and rear surface side ribs 3a are provided on the face surface and the rear surface of a first plate 2, and surface side holding ribs 4 and rear surface side holding ribs 4a, which are respectively bridged and provided on both end parts of the ribs, and a second unit member wherein a second plate is provided on the first unit member 5, and the confronted end parts of the second plate are bent in the direction of the face surface side rib 3 and in the direction of the rear surface side rib 3a, and temporarily fixed. A specified number of the second unit members are laminated, connected and fixed to constitute this heat-exchanging element. By this method, a heating medium is prevented from leaking without using an adhesive, and at the same time, the inexpensive heat-exchanging element of which the productivity is high can be obtained.

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 having a laminated structure and a method of manufacturing the same.

[0002]

2. Description of the Related Art In recent years, plate-fin type heat exchange elements have been widely used as heat exchange elements having a large heat transfer area per unit volume, relatively small size and high efficiency, and have high productivity and good quality. There is an increasing demand for heat exchange elements and methods for their manufacture.

Hitherto, in this type of heat exchange element, a method for manufacturing a heat exchange element disclosed in Japanese Patent Application Laid-Open No. 3-271696 has been developed as a method of manufacturing a unit member by molding to enhance productivity. Hereinafter, the configuration will be described with reference to FIG.

As shown in the drawing, a fin-shaped rib 102 for forming a parallel flow path through which a heat medium flows is provided on one side of a flat plate 101 made of paper or the like, and a similar rib is provided on the back side. The unit member 103 in which the unit member 102 is arranged at right angles to the surface is molded in an injection molding die, and the unit member 10 is formed.
3, an adhesive is applied to the upper surface of the rib 102, and a cutting plate 104 made of paper or the like cut to a certain size is bonded.
The heat exchange element 105 was manufactured by laminating the unit members 103 to which the cutting plates 104 were bonded while bonding them with an adhesive.

[0005]

In such a conventional method for manufacturing a heat exchange element, an adhesive is applied to the upper surface of the rib 102 of the unit member 103, and a cutting plate 104 cut to a certain size is adhered to the unit. Since the unit members 103 to which the plates 104 are bonded are laminated while bonding each other with an adhesive,
There has been a problem that the leakage of the heat medium occurs, the difficulty in controlling the application of the adhesive is high, and the productivity is poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a highly productive heat exchange element which can prevent a heat medium from leaking and can be fixed without using an adhesive, and a method of manufacturing the same. I do.

[0007]

According to the heat exchange element of the present invention, a first plate made of paper or the like cut into a rectangular shape and a parallel flow passage through which a heat medium flows on the surface of the first plate are provided. A fin-shaped front side rib provided to be formed, a back side rib provided on the back side of the first plate in the same manner as the front side rib so as to be orthogonal to the front side rib, and A first unit member formed with a front side holding rib stretched over both end portions and a back side holding rib stretched over both end portions of the back side rib, and the first unit member A second plate made of paper or the like cut into a square is provided on the surface of the second plate, and the opposite ends of the second plate are bent in the direction of the front side rib and the direction of the rear side rib, and temporarily fixed. And a second unit member, The unit member a predetermined number of stacked, is obtained by a structure formed by fixedly connected by connecting means.

According to the present invention, when fixing the first unit member and the second plate and laminating the second unit member having the above configuration, productivity is high without using an adhesive, An inexpensive heat exchange element can be obtained.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention 1 is provided so as to form a first plate made of paper or the like cut into a square, and a parallel flow path through which a heat medium flows on the surface of the first plate. A fin-shaped front side rib, a back side rib provided on the back side of the first plate so as to be orthogonal to the front side rib in the same manner as the front side rib, and stretched over both ends of the front side rib A first unit member formed with a front-side holding rib provided and a rear-side holding rib stretched on both ends of the back-side rib; and a rectangular cut on the surface of the first unit member A second unit member provided with a second plate made of cut paper or the like, and bending and fixing opposite ends of the second plate in the direction of the front side rib and the direction of the rear side rib. And a predetermined number of the second unit members are laminated. , Are formed by being connected and fixed by the connecting means, and when the first unit member and the second plate are fixed and the second unit member having the above configuration is laminated, the second plate is The opposed ends are fixed by being sandwiched between the front side holding ribs and the back side holding ribs provided on the first plate during lamination,
It has the effect of preventing the heat medium from leaking and fixing without using an adhesive.

An embodiment of the present invention will be described below with reference to the drawings.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 5, a first plate 2 made of paper or the like cut in a rectangular shape in a molding step 1 for molding in an injection molding die (not shown), A fin-shaped front side rib 3 provided so as to form a parallel flow path through which the heat medium flows on the surface of the first plate 2, and a rear surface of the first plate 2 so as to be orthogonal to the front side rib 3. A back side rib 3a provided in the same manner as the front side rib 3, a front side holding rib 4 provided on both ends of the front side rib 3, and a back side rib 3a provided on both ends of the back side rib 3a. Forming the first unit member 5 formed with the provided back side holding rib 4a, and inserting a second plate 6 made of paper or the like cut into a rectangle on the formed first unit member 5 in an insertion step 7 Insert with. A second unit member 8 that is bent at opposite ends of the second plate 6 in the direction of the front side rib 3 and the direction of the back side rib 3a and temporarily fixed in a temporary fixing step 9; Then, a predetermined number of the second unit members 8 are laminated, and the fixing nuts 1 provided at the four corners in the connecting step 11 are formed.
The heat exchange element 12 is formed by being connected and fixed by connecting means 3 and fixing bolts 14.

According to the above configuration, when the second plate 6 is brought into contact with the first unit member 5, the opposite end of the second plate 6 is placed on the front side of the first unit member 5. A second unit in which the ribs 3 and the rear ribs 3a are bent to form a front contact surface 6a and a rear contact surface 6b, respectively, and the second plate 6 is temporarily fixed to the first unit member 5. The member 8 is formed. The second unit member 8 is sequentially placed on the second unit member 8.
When the unit members 8 are stacked, the second fixed temporarily
The front-side contact surface 6a and the rear-side contact surface 6b of the plate 6 have front-side holding ribs 4 provided on the first unit member, respectively.
By being sandwiched and fixed by the back side holding rib 4a, the heat medium can be prevented from leaking and can be fixed without using an adhesive.

As described above, according to the heat exchange element and the method of manufacturing the same according to one embodiment of the present invention, the first unit member 5 and the second plate 6 are fixed to each other and the second unit member 8 having the above-described structure is provided. During the lamination, the front side contact rib 6 and the rear side contact rib 4 provided on the first plate 2 when the front side contact surface 6a and the back side contact surface 6b provided on the second plate 6 are laminated.
By being sandwiched by a, the heat exchange element is fixed, prevents leakage of the heat medium, and can be fixed without using an adhesive, thereby providing a high productivity and inexpensive heat exchange element.

In this embodiment, the connecting means in the connecting step 11 is based on the nuts 13 and the bolts 14. However, the operation does not change even if rivets or split pins are used.

[0015]

As is apparent from the above embodiments, according to the present invention, a predetermined number of unit members are stacked and connected and fixed, so that the heat medium is prevented from leaking and an adhesive is used. It can be stacked and fixed without any problems.

Further, since the manufacturing is performed by a laminating step of laminating a predetermined number of the formed unit members to form a laminated connecting member and a connecting step of fixing the connecting members so as not to be separated, the productivity is high and the cost is low. A heat exchange element can be provided.

[Brief description of the drawings]

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

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

FIG. 3 is a perspective view of a second unit member of the heat exchange element.

FIG. 4 is a perspective view of the heat exchange element.

FIG. 5 is a block diagram showing a manufacturing process of the heat exchange element.

FIG. 6 (a) is a perspective view of a cutting plate of a conventional heat exchange element. (B) is a perspective view of a unit member of the heat exchange element. (C) is a state where a cutting plate is provided on the unit member of the heat exchange element. (D) Perspective view of the same heat exchange element

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Forming process 2 1st plate 3 Front side rib 3a Back side rib 4 Front side holding rib 4a Back side holding rib 5 1st unit member 6 2nd plate 6a Front side contact surface 6b Back side contact surface 7 Insertion process 8 Second unit member 9 Temporary fixing process 10 Laminating process 11 Connecting process 12 Heat exchange element 13 Fixing nut 14 Fixing bolt

Claims (2)

[Claims] 1. A first material made of paper or the like cut into a square.
A fin-shaped front side rib provided so as to form a parallel flow path through which a heat medium flows on the surface of the first plate; and a front surface rib perpendicular to the back side of the first plate. The rear ribs are provided in the same manner as the front ribs, the front holding ribs are provided on both ends of the front ribs, and the rear ribs are provided on both ends of the rear ribs. A first unit member formed with a back side holding rib, and a second plate made of paper cut in a rectangular shape on the surface of the first unit member, and opposed end portions of the second plate And a second unit member temporarily bent and fixed in the direction of the front side rib and the direction of the rear side rib, and a predetermined number of the second unit members are stacked and connected and fixed by connecting means. The formed heat exchange element. 2. A first paper made of paper or the like cut into a square.
A fin-shaped front side rib provided so as to form a parallel flow path through which a heat medium flows on the surface of the first plate; and a front surface rib perpendicular to the back side of the first plate. The rear ribs are provided in the same manner as the front ribs, the front holding ribs are provided on both ends of the front ribs, and the rear ribs are provided on both ends of the rear ribs. A molding step of integrally molding a first unit member formed with the back side holding rib in an injection molding die, and inserting a second plate made of paper or the like cut into a rectangle on the first unit member And a second unit member which is temporarily fixed on the first unit member while bending opposite ends of the second plate in the direction of the front side rib and the direction of the rear side rib. A temporary fixing step of forming A laminating step of forming a laminate attachment member formed by a member with a predetermined number of stacked, manufacturing method of the heat exchanger element produced by the coupling step of the connecting member is secured by connecting means so as not to separate.