JPS61153395A - Heat exchanger - Google Patents

Abstract

PURPOSE:To make it feasible to manufacture a heat exchanger with excellent structural stability very easily by a method wherein multiple unit members are laminated on one side of flat plates whereon synthetic resin made ribs are firmly formed in rows at equivalent intervals. CONSTITUTION:A heat exchanger 1 is composed of multiple plates 2 fitted with rectangular ribs 3 arrayed in a specified direction at equivalent intervals as fins formed into parallel channels while the direction of ribs is shifted by 90 deg. per layer. The mechanical strength of plates 2 is reinforced by the ribs 3 to make the walls thereof thinner. Especially the plates 2 and the ribs 3 are firmly coupled with one another by means of coupling legs 6 formed on the bottom of each rib 3 to be engaged with multiple rows of perforations 5 formed into one body like dental rows on the plates 2. In such a constitution, the heat exchanger 1 may be provided with structural stability and excellent assembling efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a plate-fin type heat exchanger having a laminated structure.

[Conventional technology]

Plate-fin type heat exchangers have a large heat transfer area per unit volume, and are widely used as relatively small and highly efficient heat exchangers. Based on their differences, they can be divided into three types: countercurrent type, countercurrent type, and orthogonal (oblique) type. Counter-flow type and cross-flow type are often used for air conditioners, but up until now, their basic configuration has been as shown in Figure 6.
Seven plates (101) for partitioning two fluids are stacked with corrugated plate-shaped fins (102) sandwiching them in between to form double rows of parallel flow channels. In the case for air conditioning shown in Fig. 6, the plate (101) is made of a paper material based on Japanese paper that has both heat conductivity and moisture permeability.
102) is also obtained by processing the same paper material as plate (101) into a corrugated plate.

[Problem that the invention seeks to solve]

In the conventional 5-school exchanger 1 as described above, it is difficult to manufacture the corrugated plate-shaped fins (102), including cutting to obtain a good end face.

The present invention was made to solve these problems, and an object of the present invention is to obtain a heat exchanger that is easy to manufacture and has high structural stability.

[Means for solving problems]

[This heat exchanger according to the present invention] has a plurality of laminated writing members each having ribs made of synthetic resin molded in rows at intervals on one side of a flat plate. The ribs are integrally molded into the hole tab L, which is an array of through holes formed in the plate.

[Effect]

In this invention, each rib of the U-shaped member engages with the through hole on the lower surface, increasing the bonding strength between the rib and the plate, resulting in excellent structural stability and ease of manufacture.

[Embodiments of the invention]

The heat exchanger shown in the drawing is an air-to-air heat exchanger employed in the air conditioning field. It is an alternating current type, and the one shown in Fig. 3 is a counterflow type in which two fluids flow opposite each other for heat exchange.

First, let's talk about a cross-flow type heat exchanger (1) as an example of a heat exchanger in which two fluids flow at an angle.

I will explain. This heat exchanger (1) has linear ribs (3) 1, each of which has a rectangular end surface shape, and is arranged between a plurality of plates (2) at equal intervals in a certain direction. It has a flow path formed with ribs (
The direction of 3) is shifted by approximately 90 degrees t for each layer. The plate (2) is made of Japanese paper, etc., which has both heat conductivity and 1iJ1 moisture property, and has a thickness of 0.05 to 0.2 degrees/f.
It is a rectangular flat plate with a wall thickness of f and is a member that partitions two fluids to be heat exchanged. On one side of the plate, ribs (3) made of synthetic resin are integrally molded in a row at a predetermined interval. (1
) constitutes a writing position member (4) which is a constituent unit of the brush. The height of the ribs (3) of each writing position member (4) defines the distance between the plates (2), which is approximately 0.5 to 5.0 #Il)
and the pitch (spacing) are the key to configuring double rows of parallel channels in the opposing gaps of the plates (2) through which the fluid to be heat exchanged passes. Therefore, if the pitch is too large, the rectifying effect of the air flow in the parallel flow path will be small, and if the pitch is too small, the static pressure loss in the parallel flow path will be large.
It is determined within a range of about 11. The thinner the rib (3) and plate (2), the better the heat exchange [
Good results can be obtained, but in reality it is necessary to maintain mechanical strength, which also affects their ease of assembly, so they cannot be made extremely thin. However, the heat exchanger of this example in which the ribs (3) are integrally molded on one side of the plate (2) with synthetic resin (
In 1), the mechanical strength of the plate (2) can be utilized by the ribs (3), so the mechanical strength of the brake (C2) can be lowered accordingly and a thin wall can be formed. In particular, the ribs (3) in the heat exchanger (1) of this example are independent of each other, but are firmly connected to the ribs (2).

That is, the plate (2) is formed with two rows of through holes (5), and each row of holes is provided with a rib (
3) are integrally molded in the shape of a tooth row.

Therefore, a plate (2) is attached to a part of the lower surface of each rib (3).
A connecting leg (6) that is inserted into the through hole (5) is formed, and the plate (2) and rib (3) are firmly connected.
(See Figure 5.) Therefore, the brush position member (4) is folded into the stiff rib (3) in one layer.
If they are glued together so that their directions are shifted by 90 degrees, a cross-flow type heat exchange g = (1) with high structural stability and ease of assembly as shown in Figure 1 can be obtained. .

Then, if primary air is passed through the parallel flow path of one system in the same direction and secondary air is passed through the parallel flow path of another system, the secondary air will be Total heat exchange between the air and the secondary air is possible.

Next, the counterflow type heat exchanger (IA) shown in FIG. 3 will be explained. This heat exchanger (lA) also has double rows of mutually independent ribs (3) made of synthetic resin interposed at equal intervals between each plate (2), and one side of the plate (2) has ribs ( It has the same structure as the heat exchanger (1) of the previous example in that it is obtained by laminating the brush position member (4A) integrally molded with 3). This heat exchange? The difference between sg (IA) and the previous example is that the rib (3) of the writing position member (4A) is formed with a length t corresponding to approximately half of the planar area of one side of the plate (2), and The ribs (3) of the positioning member (4A) are stacked in a staggered manner with the directions of the five ribs (3) parallel to each other. In other words, this heat exchanger protector (IA)
As shown in FIG. (2)
for one half of the flow path, and the other half lacks a parallel flow path. Then, as shown in @3ffit, the brush position members (4A) are stacked 7 times in a staggered manner, and the ribs (3) If the part of the parallel flow path where the end surface cannot be closed is closed off with a control member or a blocking plate, and primary air and secondary air are passed from opposite directions through each parallel flow path facing the opposing end surface, -secondary air can be This makes it possible to exchange heat between the air and the secondary air using a counterflow method.

In both of the heat exchangers (1) and (IA) described above, the plate (2) is made of a material that has both heat conductivity and moisture permeability, so it is possible to exchange both sensible heat and latent heat. It is also possible in exactly the same way to construct a heat exchanger for sensible heat by forming the plate (2) from a heat-conducting material. Incidentally, whether the through holes (5) constituting the hole row are slit-shaped rectangular holes, elliptical holes, or round holes, a large difference in bonding force t does not occur. It has connecting legs (6
) wraps around the ITrJ side of the plate (2) to form a joint 7 flange (6A), and this joint flange (6A
) is the main body that strengthens the connection between the rib (3) and the plate (2).

〔Effect of the invention〕

As is clear from the above description of the embodiments, the heat exchanger of the present invention has a heat exchanger having a tooth row on one side of a heat conductive plate having double rows of holes, which is an array of through holes. A writing member made of synthetic resin integrally molded with ribs spaced apart from each other is laminated to form a multi-stage double-row parallel flow path with one gap between each plate. Since the connection between the rib and the plate is strong,
It has the advantage that the writing members can be easily laminated, the assembly is easy, and the overall structural stability is extremely high.

[Brief explanation of the drawing]

Figure 1 shows a 2g cross-flow type heat exchanger as an application example of the present invention.
2 is a perspective view showing the writing position member alone, FIG. 3 is a perspective view of a heat exchanger showing another embodiment of the present invention, and FIG. 4 is a perspective view showing the writing position member. FIG. 5 is an enlarged partial sectional view showing the relationship between the ribs of the brush-position member and the plate, and FIG. 6 is a perspective view showing a cross-flow type heat exchanger as a conventional example. be. In the figure, (1), (
IA) is a heat exchanger, (2) is a plate, (3) is a rib,
(4) and (4A) are writing position members, and (5) is a through hole. In addition, the same reference numerals in the drawings indicate corresponding parts. Agent Masuo Oiwa (and 2 others) Figure 2

Claims (1)

[Claims] A brush point made by integrally molding synthetic resin ribs in a row of teeth at intervals on one side of a heat-conductive flat plate having double rows of holes, which are an array of through holes. A heat exchanger characterized in that a plurality of members are laminated to form multiple rows of parallel flow paths formed by the ribs in gaps between each plate.