JPS62131196A - Heat exchanger of plate fin type - Google Patents

Abstract

PURPOSE:To reduce the number of parts and provide simplification and light weight in the structure by providing in series cross flow sections and counter flow sections and providing corrugated boards in the cross flow sections, the directions of the corrugated boards being mutually different, alternately among partition boards and at four corners of the partition board piercing specified connecting sections. CONSTITUTION:Rectaugular partition boards 3a and 3b each with a flange section are alternately piled up in a plurality of steps, and respective fauges 2 are mutually joined to form primary spaces 8a and secondary spaces 8b. Between the partition boards 3a and 3b a corrugated board 7a forming a primary flow passage and a corrugated board 7b forming a secondary flow passage are alternately arranged and fixed. Further, the partition boards have respectively cylindrical sections 9a and 9b projected. Those cylindrical projections fit in an opening 1 which is located right below the cylindrical projection to be joined together, so that primary spaces 8a are mutually connected and so are secondary spaces 8b. Primary fluid I passes through each of cylindrical section 9a and it is led to the primary space 8a of each step, and secondary fluid II passes through each of cylindrical sections 9b and it is led to the secondary space 8b of each step, and beat exchange occurs between the primary and secondary flow passages. With this constitution a cussing which covers the whole structure, distance plate, spacer, etc. are not required, making it possible to reduce the number of parts and provide a light weight heat exchanger.

Description

Detailed Description of the Invention [Industrial Application Field 1] The present invention is a plate-fin type heat exchanger used as a gas-gas, liquid-liquid, or gas-liquid indirect heat exchanger in spinning plants, chemical plants, etc. It concerns exchangers.

[Prior Art] For example, among plate-fin type heat exchangers whose heat transfer surface is a corrugated plate, there is one that has a cross-flow section a and a counter-flow section A, as shown in Fig. 5. In the section a, the flow path C through which the high-temperature fluid flows and the flow path d through which the low-temperature fluid flows intersect obliquely, and in the opposing flow section, the flow path C and the flow path d are arranged in parallel.

[Problems to be solved by the invention] Therefore, in such a plate-fin type heat exchanger,
It is necessary to stack corrugated plates e and f in multiple stages vertically to form channels c and d, and to interpose partition plates between each of the corrugated plates e and f, as well as distance plates, spacers, and transmission plates. A large number of parts are required, such as heat-enhancing torsion rods, and a casing is also required to house all of these parts. Therefore, the structure is complicated and the weight is also large.

In view of these circumstances, the present invention aims to reduce the number of parts, simplify the structure and manufacturing method, and reduce the weight.

[Means for Solving the Problems] The present invention consists of vertically stacking a plurality of partition plates each having openings at the four corners and a flange at the peripheral edge, and a cross-flow section and a counter-flow section. Corrugated plates that are connected in series and have mutually different directions of cross-flow portions are arranged alternately between the partition plates, and further, openings that are different between each stage of the partition plates and are located on the same diagonal line every other stage. It has a configuration in which a cylindrical portion is provided protrudingly from the cylindrical portion and the cylindrical portion is connected to an opening directly below the cylindrical portion.

[Function] Therefore, the flange portion and cylindrical portion of the partition wall plates stacked in multiple stages can serve as conventional parts such as distance plates, spacers, and casings.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 to 3, a flange portion 2 has openings 1 formed at each of the four corners and serves as a fluid communication portion, and the outer edge portion is bent into a wide taper shape at a predetermined angle by press working. A plurality of rectangular partition plates 3a and 3b having the following shapes are stacked alternately in the vertical direction so that the respective flange parts 2 fit together, and the flange parts 2 are joined together, thereby creating a primary space 8a in the partition plate 3a. Secondary spaces 8b are respectively formed within the partition plates 3b. Further, between the partition plates 3a and 3b, that is, the primary space 8a and the secondary space 8b, as shown in FIG. As shown in FIG. 4(0), the corrugated plate 7a for forming a primary flow path has a cross flow part 4b obliquely intersecting with the cross flow part 4a of the corrugated plate 7a, and a counter flow parallel to the counter flow part 5a. The corrugated plates 1b for forming a secondary flow path having portions 5b are arranged and fixed alternately. Furthermore, cylindrical portions 9a and 9b are provided protruding from one opening located on one diagonal of the partition plate 3a, and cylindrical portions 9b are provided protruding from one opening located on the other diagonal of the partition plate 3b, respectively. Part 9a, 9
The lower end of b is fitted and joined to the opening 1 located directly below it,
- The primary space 8a and the secondary space 8b are configured to be communicated with each other and the primary space 88 and the secondary space 8b.

Further, each opening 1 of the partition wall plate 3a located at the uppermost stage is provided with a primary fluid supply header 10, for example, at the upper right opening 1 in FIG.
a, and the primary side fluid discharge header 11a to the lower left opening 1.
On the other hand, the secondary side fluid supply header 10b is installed in the upper left opening 1, and the secondary side fluid discharge header 11b is installed in the lower right opening 1. In addition, a nozzle 6 is provided in each opening of the partition wall plate 3a located at the lowest stage, and
A fluid temperature measuring device (not shown) is installed in the nozzle 6,
It is possible to measure the temperature of the fluid being supplied and discharged on the downstream and secondary sides, respectively, or a closing cap or the like is installed.

With such a configuration, the -next side supply header 10a
The primary fluid supplied from the uppermost stage is directly guided to the primary space 8a of each stage, and the lower stage is led to the primary space 8a of each stage through the cylindrical part 9b. The secondary fluid ■ is discharged from the primary discharge header 11a through the flow section 4a, the counterflow section 5a, and the cross flow section 4a, while the secondary fluid ■ supplied from the secondary supply header 10b is discharged from the cylindrical section 9b, respectively.
is led to the secondary side space 8b of each stage, passes through the cross flow part 4b, the counter flow part 5b, and the cross flow part 4b of the corrugated plate 1b forming the secondary flow path from the secondary side discharge header 11b. The fluid 1. I[ is heat exchanged between the downstream and secondary flow paths.

In the above, the partition plates 3a and 3b have only the cylindrical parts 9a and 9b and the flange part 2, so the structure is extremely simple, and the side wall is formed by joining the seven flange parts 2, so the casing that covers the whole is No longer needed, and the cylindrical part 9
By joining a, 9b and the opening 1 directly below,
- Since the formation and maintenance of the downstream space 8a and the secondary side space 8b and the sealing of the downstream space 8a and the secondary side space 8b are performed, there is no need for conventional distance plates or spacers, and the number of parts can be significantly reduced. The weight can be reduced.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and it is optional to arrange a twisted plate in the flow path section of the corrugated plate to promote heat transfer, and this departs from the gist of the present invention. Of course, various changes can be made as long as it is not necessary.

[Effects of the Invention] As explained above, the plate-fin type heat exchanger of the present invention has the excellent effects of being smaller, lighter, and easier to manufacture because the number of parts is small. It is possible.

[Brief explanation of drawings]

FIG. 1 is a plan view of the plate-fin type heat exchanger of the present invention;
Figure 2 is a view from the ■-■ arrow in Figure 1, and Figure 3 is a view from ■-■ in Figure 1.
(2) A view in the direction of the arrows, FIGS. 4(A) and 4(B) are explanatory views of a corrugated plate, and FIG. 5 is an explanatory view of a conventional plate-fin type heat exchanger. 1 is an opening, 2 is a flange, 3a, 3b are partition plates, 4a,
4b is a cross-flow section, 5a and 5b are counter-flow sections, 7a and 7b are corrugated plates, 8a is a primary space, 8b is a secondary space, and 9a. 9b indicates a cylindrical portion.

Claims (1)

[Claims] 1) A plurality of partition plates with openings in the four corners and flanges on the periphery are stacked in multiple stages in the vertical direction, and a cross-flow part and a counter-flow part are connected in series, and the direction of the cross-flow part is Different corrugated plates are arranged alternately between the partition plates, and further, cylindrical parts are provided protruding from openings located on the same diagonal line at every other stage, which are different between each stage of the partition plates, and the cylindrical parts are A plate-fin type heat exchanger, characterized in that it is connected to an opening directly below the cylindrical portion.