JP2852412B2 - Heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an efficient heat exchanger which can be used as a cooling and heat exchange type ventilation fan for various closed devices.

[0002]

2. Description of the Related Art A generally used heat exchange type ventilation fan employs a cross-flow type heat exchanger. As shown in FIG. Are provided. This channel 5
A high-temperature fluid 53 and a low-temperature fluid 54 flow through the first and second fluids 52, respectively, so that the high-temperature fluid 53 and the low-temperature fluid 54 flow in a state orthogonal to each other and exchange heat.

There is also a counter-flow type heat exchanger, in which a number of pipes 61 are disposed inside an outer box 60 with a gap 62 therebetween, as shown in FIG. . Then, a high-temperature fluid flows through the pipe 61 from one end, and a low-temperature fluid flows through the gap 62 from the other end, so that the high-temperature fluid and the low-temperature fluid flow in opposite directions inside the outer box 60. It is configured to exchange heat.

[0004]

The former cross-flow heat exchanger type has a high temperature at the inlet side of the high-temperature fluid and a low temperature at the outlet side. Therefore, the low-temperature fluid entering the outlet side is
Since the temperature of the high-temperature fluid is low, it is not heated very much, and there is a problem that the efficiency as a heat exchanger is poor. On the other hand, the counter-flow type is more efficient than the cross-flow type, but has a problem that the assembly and structure are complicated.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a flat plate having a desired width and having a good thermal conductivity is formed into a multilayer structure which is sequentially bent at right angles to be narrow in the width direction and is integrally formed. A box that covers the heat exchange bulkhead as an exchange bulkhead, which is connected to the outermost wall of the multi-layered heat exchange bulkhead to form an upper surface, both lengthwise side walls and a lower surface, and that both widthwise side walls are attached. Are formed at opposite longitudinal ends of the upper surface and the lower surface of the box, respectively, so as to face each other, and one opening of either the upper surface or the lower surface of the box is formed. The inlet is a high-temperature fluid inlet, the other opening is a high-temperature fluid outlet, and the low-temperature fluid inlet is an opening formed on the other surface opposite the high-temperature fluid outlet. An outlet formed on the surface facing the high-temperature fluid inlet And parts, in the a box body internal high temperature fluid and low temperature fluid, is obtained as flowing in opposite directions with intervening heat exchange septum.

[0006]

[0007]

1 to 3 show an embodiment of the present invention.
It will be described in detail based on. FIG. 1 shows an embodiment of the present invention. FIG. 1 is a perspective view of a main part of a heat exchanger 1, and FIG.
FIG. 3 is a sectional view taken along the line BB of FIG. 1.

1 to 3, the outer shape of the heat exchanger 1 is formed in a box-shaped structure having six surfaces, and a longitudinal direction of an upper surface 2a and a lower surface 2c of a box body 2 constituting the outer shape are opposed to each other. At both ends, openings 3 and 4 and lower surface 2c are formed on upper surface 2a.
The openings 5 and 6 are formed to face each other.

Reference numeral 7 denotes a heat exchange partition formed to be large enough to be accommodated in the box 2, and is a thin member having good thermal conductivity, such as aluminum or plastic, corresponding to the length of the box 2 in the longitudinal direction. A flat plate having a width is formed, and the flat plate is sequentially folded at right angles to be integrally formed in a multilayer structure in which the width direction of the box 2 is narrowed.

The heat exchanger 1 is assembled by inserting the heat exchange partition 7 integrally formed in a multilayer structure into the inside of the box 2 as described above.

Next, the operation will be described. As shown in FIG. 2, the high-temperature fluid 8 flows through the openings 3, 4 in the upper surface 2 a so that the high-temperature fluid 8 and the low-temperature fluid 9 flow in opposite directions through the heat exchange partition 7 inside the box 2. When the low-temperature fluid 9 is injected and discharged from the lower surface 2c, the low-temperature fluid 9 is injected and discharged from the openings 6 and 5 of the lower surface 2c.
And the inlet of the low-temperature fluid 9 are determined to face each other.

Therefore, for example, if the opening 3 of the upper surface 2a of the box 2 constituting the outer shape of the heat exchanger 1 is made to be the injection port 3 of the high-temperature fluid 8 shown by the solid arrow in FIGS. The other opening 4 serves as an outlet 4 for the high-temperature fluid 8 and an inlet for the low-temperature fluid 9 indicated by a dotted arrow serves as the outlet 4 for the high-temperature fluid 8.
An opening 6 is formed in the lower surface 2c opposed to the lower surface 2c.
The opening 5 is formed in c.

As shown in FIG. 2, the high temperature fluid 8 injected from the inlet 3 flows to the outlet 4 along the heat exchange partition 7, while the low temperature fluid 9 injected from the inlet 6 is Similarly, it flows to the outlet 5 along the heat exchange partition 7. Therefore,
Inside the box 2, the high-temperature fluid 8 and the low-temperature fluid 9 flow in opposite directions with the heat exchange partition 7 interposed therebetween, and the high-temperature fluid 8 and the low-temperature fluid 9 flow through the heat exchange partition 7 interposed therebetween. Transfer of heat with the fluid 9 is performed.

FIGS. 4 and 5 are graphs showing the state of heat exchange between the low-temperature fluid 9 and the high-temperature fluid 8 with respect to the length of the box 2 of the heat exchanger 1, as is apparent from FIGS. Then, a high-temperature fluid 8 at a temperature T1 is injected from the injection port 3, and a temperature T3
If the low-temperature fluid 9 is injected from the inlet 6, the temperature difference T0 between the high-temperature fluid 8 and the low-temperature fluid 9 at the outlet 4 of the high-temperature fluid 8 and the outlet 5 of the low-temperature fluid 9 respectively becomes as shown in FIG.
The length of the box 2 shown in FIG. 5 is larger than that of the length shown in FIG. This is because the longer the length of the box 2, the more heat is transferred, the more heat is transferred from the high-temperature fluid 8 to the low-temperature fluid 9, and the temperature difference between the two is reduced. Get better.

Therefore, the heat exchange efficiency can be adjusted by adjusting the length and width of the heat exchange partition 7, that is, by adjusting the length of the box 2. In addition, since the longer the length, the higher the efficiency, the heat exchanger 1 can also be used as a duct. Furthermore, the heat exchange efficiency increases as the number of layers of the heat exchange partition 7 housed inside the box 2 increases.

The upper surface 2a, the longitudinal side walls 2b and 2d, and the lower surface 2c of the box 2 are integrally formed with the outermost wall of the heat exchange partition 7 formed in a multilayer structure. Then, if the box 2 is formed by attaching the width-direction side walls 2e and 2f of the box 2, the number of parts is reduced and the assembly of the heat exchanger 1 is further facilitated.

[0017]

According to the present invention, a heat exchange partition is formed by integrally forming a flat plate having a desired width with a member having good heat conductivity in a multilayer structure narrow in the width direction by sequentially refracting in the perpendicular direction. The upper surface, both side walls in the longitudinal direction and the lower surface are formed continuously with the outermost wall of the heat exchange bulkhead formed in this multilayer structure, and the box body covering the heat exchange bulkhead is formed by attaching both widthwise side walls, Openings are formed at both ends in the longitudinal direction of the upper and lower surfaces of the box body facing each other, and one of the upper and lower surfaces of the box body is connected to one of the high-temperature fluids. The other opening is the outlet for high-temperature fluid, the inlet for low-temperature fluid is the opening formed on the other surface opposite the outlet for high-temperature fluid, and the outlet for low-temperature fluid is high-temperature. An opening formed on the surface facing the fluid injection port. In the body and the low temperature fluid and the box body section, since with intervening heat exchange partition wall as flowing in opposite directions, as well as the structure is simple as a heat exchanger, the assembly is easy. In addition, the heat exchange efficiency is good, and the heat exchange efficiency can be adjusted by increasing the length of the box and adjusting the length of the heat exchange partition in the width direction. The upper surface of the box, the both side walls in the longitudinal direction, and the lower surface are formed so as to be connected to the outermost wall of the heat exchange partition formed in a multilayer structure, and the box body is formed by attaching both side walls in the width direction. , Further facilitates assembly.

[0018]

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is an explanatory view of a main part showing a conventional example.

FIG. 5 is an explanatory view of a main part showing another conventional example.

FIG. 6 shows an embodiment of the present invention, and is a diagram showing a relationship between a temperature and a length of a box.

FIG. 7 shows an embodiment of the present invention and is a diagram showing a relationship between a temperature and a length of a box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Box 2a Upper surface of box 2 2c Lower surface of box 2 3 Opening 4 Opening 5 Opening 6 Opening 7 Heat exchange partition 8 High temperature fluid 9 Low temperature fluid

Claims (1)

(57) [Claims] A flat plate having a desired width and made of a member having good thermal conductivity is bent in a direction perpendicular to the direction at a time and integrally formed in a multilayer structure narrow in the width direction to form a heat exchange partition. The upper surface, the longitudinal side walls, and the lower surface of the box are formed continuously with the outermost wall of the formed heat exchange partition, and the box is formed to cover the heat exchange partition by attaching the width side walls. An opening is formed at each of the longitudinally opposite ends of the upper surface and the lower surface of the box body facing each other, and one of the upper surface and the lower surface of the box body. The opening is a high-temperature fluid inlet, the other opening is a high-temperature fluid outlet, and the low-temperature fluid inlet is formed on the other surface facing the high-temperature fluid outlet. The opening of the low-temperature fluid should be The opening formed on the surface facing the inlet for fluid, wherein the high-temperature fluid and the low-temperature fluid flow in opposite directions to each other inside the box with the heat exchange partition interposed therebetween. And heat exchanger.