JPH1078292A - Plate fin type heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce types of partition plates for partitioning a low temperature fluid channel and a high temperature fluid channel of a plate fin type heat exchanger, by inserting rings to peripheries of two holes to be inserted with two headers between second and first partition plates, and fixing it to both the plates. SOLUTION: The plate fin type heat exchanger comprises a low temperature fluid introducing header 1, a heated low temperature fluid discharging header 2, oblique flow parts 3a, 3b provided at introducing and discharging sides, a high temperature fluid inlet provided at the part 3a, a high temperature fluid outlet provided at the part 3b, and a counterflow part 4 provided between the parts 3a and 3b to exchange heat at low temperature fluid with that at high temperature fluid. Rings 26, 27 are inserted into peripheries of two holes to be inserted with the headers 1, 2 between second and first partition plates 10 and 9, fixed to the plates 10 and 9, and mounted with the header 1 and the header 2.

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 exchanger, and more particularly to a plate-fin type heat exchanger in which a low-temperature fluid passage and a high-temperature fluid passage are separated by a separator.

[0002]

2. Description of the Related Art Conventional plate-fin type heat exchangers are:
As shown in FIGS. 1 and 2, the low-temperature fluid introduction header 1 and the heated low-temperature fluid outflow header 2 are provided in the oblique AC section 3a, the oblique AC section 3b, and the oblique AC section 3a provided on the inflow side and the outflow side. High-temperature fluid inlet 5, high-temperature fluid outlet 6 provided in oblique AC section 3b,
The low-temperature fluid 7 and the high-temperature fluid 8 are provided between the oblique exchange section 3a and the oblique exchange section 3b and exchange heat with the high-temperature fluid 8.

The internal structure of this plate-fin type heat exchanger is shown in FIG.
As shown in FIG. 14 which is a sectional view and FIG. 15 which is a perspective view of each member, an edge 25a is provided around the periphery, and two headers of a low-temperature fluid introduction header 1 and a low-temperature fluid outflow header 2 are inserted. The first separator 9b provided with three holes 23 and 24 (Fig. 15
A), the heat transfer accelerating body 14 for the low-temperature fluid flow path 12 and the two oblique flow path members 18 and 19 (FIG. 15B), and around the two holes 23 and 24 into which the two headers are inserted. A second separator 10b (FIG. 15c) provided with embossed portions 22a and 22b, a heat transfer enhancer 15 for the high-temperature fluid flow path 13 and two oblique flow path members 20 and 21 (FIG. 15d) ) Is repeated and two or more stages, most often 80 or more stages, are stacked with a brazing material interposed therebetween, and the first separator 9b and the heat transfer enhancer 14 for the low-temperature fluid flow path 12 are further stacked thereon. And two oblique flow path members 18 and 19 are overlapped, and two
A flat plate-shaped third separator 11a (e in FIG. 15) provided with holes 23 and 24 for inserting two headers is overlapped with a brazing material interposed therebetween, and a reinforcing member 28 is inserted between the respective separators. To melt the brazing material previously sandwiched, adhere the members together, attach the low-temperature fluid introduction header 1 and the low-temperature fluid outflow header 2,
Further, covers 16a and 17a are fixed vertically.

In the above-mentioned conventional plate-fin type heat exchanger, the low-temperature fluid 7 entering the oblique channel member 18 of the low-temperature fluid channel 12 from the low-temperature fluid introduction header 1 is supplied to the high-temperature fluid channel by the counterflow portion 4. Heated by the high-temperature fluid 8 entering from the high-temperature fluid introduction port 5 of the 13 oblique channel member 20, flows out of the low-temperature fluid outflow header 2 through the oblique exchange portion 19 of the low-temperature fluid channel 12, and heat exchange is performed. The finished high-temperature fluid 8 is the oblique channel member of the high-temperature fluid channel 13.
It flows out from the high temperature fluid outlet 6 of FIG.

Further, the present inventors have developed a symmetrical plate-fin type heat exchanger as shown in FIGS. 8, 9 and 16, and have filed a patent application as Japanese Patent Application No. 7-144168. did. This plate-fin type heat exchanger has a symmetrical counterflow section 4 for exchanging heat as shown in FIGS.
The bilaterally symmetric oblique exchange portions 3a and 3b through which the low-temperature fluid 7 and the high-temperature fluid 8 flow in and out, and the low-temperature fluid introduction header 1 and the low-temperature fluid outflow header 2 having the same shape are arranged so as to be bilaterally symmetric. The low-temperature fluid 7 entering the oblique exchange section 3c from the low-temperature fluid introduction header 1 is heated by the high-temperature fluid 8 entering from the high-temperature fluid introduction ports 5a and 5b in the counterflow section 4a.
The high-temperature fluid 8 that has flowed out of the low-temperature fluid outflow header 2 through the oblique exchange portion 3b and has completed heat exchange flows out of the high-temperature fluid outlets 6a and 6b of the oblique exchange portion 3a.

The internal structure of this symmetrical plate-fin type heat exchanger will be described below. As shown in FIG.
And a left-right symmetric first separator 9c provided with two holes 23 and 24 for inserting two headers of the header 2 for cryogenic fluid outflow (see FIG.
11a) and a symmetrical heat transfer enhancer 14a for the cryogenic fluid flow path 12a and two symmetrical oblique flow path members 18a.
, 19a (see FIG. 11b) are fixed with a brazing material therebetween, and a raised edge is provided on the periphery thereof, and a raised embossed portion 22c is formed around the hole into which the two headers are inserted.
A symmetrical second separator plate 10c provided with 22d, a symmetrical heat transfer enhancer 15a for the high-temperature fluid flow path 13a, and two symmetrical inclined flow path members 20a and 21a (FIG. 11) d) and
A third separator 11c with the second separator 10c turned upside down, a symmetrical heat transfer enhancer 14a for the low-temperature fluid flow path 12a, and two symmetrical oblique flow path members 18a, 19a (FIG. 11). b) are stacked in two or more stages, and in many cases, 80 or more stages are stacked, and the first separator 9c is placed upside down, and the header 1 for introducing the low-temperature fluid and the low-temperature fluid Attach the header 2 for outflow, and further cover the upper and lower 16a, 16b, 17
a and 17b are fixed.

Next, the method of fixing each member of the conventional plate-fin type heat exchanger will be described. When a brazing material is sandwiched between the members, the member is placed in a high temperature furnace and heated. The material is melted and fixed. Also, the first separator 9c and the second separator
10c, the outer edges and holes 23 and 24 of the second separator 10c and the third separator 9c, respectively, and the first separator 9c and the lower cover 16
a, 16b, the respective headers 1 of the second separator 10c and the third separator 9c, and the first separator 9c and the upper covers 17a, 17b.
The inner edges of the holes through which 2 pass are welded together and fixed. The two headers 1 and 2 are lower covers 16a and 16b and an upper cover 17a.
, 17b.

The above-mentioned conventional plate-fin type heat exchanger (shown in FIGS. 1, 2 and 13 to 15) is provided as a separator for separating the low-temperature fluid passage 12 and the high-temperature fluid passage 13 from each other. It is necessary to use three types of separators having different shapes of one separator 9b, second separator 10b, and third separator 11a, and it is necessary to design and manufacture three types of separators. The left-right symmetric plate-fin type heat exchanger (shown in FIGS. 8, 9 and 16) developed by the present inventors has a second separator 10c and a third separator sandwiched therebetween. 11c has the same shape so that the same one can be used upside down, but the first separator 9c used for the first and last stages must have a different shape, It was necessary to design and manufacture different types of separators. In addition, some separators had complicated shapes, so that the number of production days and time were long, and the cost was high.

[0009]

SUMMARY OF THE INVENTION The present invention relates to a plate
The object of the present invention is to provide a plate-fin type heat exchanger in which the types of separators for separating the low-temperature fluid flow path and the high-temperature fluid flow path of the fin type heat exchanger are reduced and the shape of the separator is simplified. It is what it is.

[0010]

In order to achieve the above object, the present invention provides a raised edge 25 around the present invention and two holes for inserting two headers, a header for introducing a low-temperature fluid and a header for discharging a low-temperature fluid. A first separator provided with a heat transfer enhancer for a low-temperature fluid flow path and two oblique flow path members;
A second flat plate provided with two holes into which two headers are inserted, a heat transfer promoting body for high-temperature fluid flow path, and two oblique flow path members repeated twice or more and stacked. In the plate-fin type heat exchanger, a ring is inserted between the second separator and the first separator and around the two holes into which the two headers are inserted, and fixed to the second separator and the first separator. It was done.

Further, in the plate-fin type heat exchanger of the present invention, a higher edge is provided around the periphery and two holes for inserting two headers, a header for introducing a low-temperature fluid and a header for discharging a low-temperature fluid, are provided. A first separator, a heat transfer enhancer for low-temperature fluid flow paths and two oblique flow path members, a flat second separator having two holes for inserting the two headers, The heat transfer enhancer for the fluid flow path and the two oblique flow path members are sequentially and repeatedly repeated two or more times, and the first separator and the heat transfer enhancer for the low-temperature fluid flow path and the two The oblique flow path member is overlapped, a flat plate-shaped second separator provided with a hole for inserting the header on the uppermost portion is overlapped, and the two headers are inserted between the second separator and the first separator. Insert a ring around the two holes and secure it to the second and first separators, Install the header and the low-temperature fluid outlet header for introducing, is that was assumed to have what further secure the cover to the vertical.

In order to achieve the above object, the present invention provides a bilaterally symmetrical structure in which a stepped edge is provided around the present invention and two holes for inserting a header for introducing a low-temperature fluid and a header for discharging a low-temperature fluid are provided. A first separator, a symmetrical heat transfer enhancer for low-temperature fluid flow paths, two symmetrical oblique flow path members, a second separator having the first separator turned upside down, In a plate-fin type heat exchanger having a member formed by repeatedly stacking a left-right symmetrical heat transfer enhancer for a fluid flow path and two left-right symmetrical oblique flow path members at least twice, A ring is inserted between the separator and the first separator and around the two holes into which the two headers are inserted, and fixed to the second and first separators.

Further, in the plate-fin type heat exchanger of the present invention, a stepped edge is provided around the periphery, and two holes for inserting two headers, a header for introducing a low-temperature fluid and a header for discharging a low-temperature fluid, are provided. A left-right symmetrical first separator, a left-right symmetrical heat transfer enhancer for low-temperature fluid flow paths, two left-right symmetrical oblique flow path members, and a second separator turned upside down the first separator. And a left-right symmetrical heat transfer promoter for the high-temperature fluid flow path and two left-right symmetrical oblique flow path members are repeatedly stacked in order twice or more times, and the first separator and the low-temperature fluid flow path Symmetrical heat transfer enhancer and two symmetrical oblique flow path members are overlapped with each other, a second separator is overlapped on the uppermost portion, and the second separator is disposed between the second separator and the first separator. Insert a ring around the two holes where the two headers are inserted and secure them to the second and first separators. A header having a header for low-temperature fluid introduction and a header for low-temperature fluid outflow, with the side plate fixed on the lower cover and under the upper cover as necessary, and with the cover mounted on top and bottom, if necessary It was that.

Further, in the plate-fin type heat exchanger of the present invention, the cross section of the ring inserted between the second separator and the first separator is hollowed out in a circular or elliptical arc shape, a U-shape and an arc shape. That is, one of the squares is used.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure and operation of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view for explaining a plate-fin type heat exchanger according to one embodiment of the present invention, and FIG.
FIG. 3 is a top view of the plate-fin heat exchanger according to one embodiment of the present invention, FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG. 2, and FIG.
FIG. 5 is an enlarged view of a cross section of FIG.
FIG. 6 is a perspective view of each member of the fin type heat exchanger, FIG. 6 is a plan view of a ring used in the present invention, and FIG. 7 is a sectional view of the ring of FIG. FIG. 8 is a perspective view for explaining a plate-fin type heat exchanger according to another embodiment of the present invention, FIG. 9 is a top view of FIG. 8, FIG. FIG. 11 is a perspective view of each member of FIG.

A plate-fin type heat exchanger according to an example of the present invention has the same outer shape as the conventional one as shown in FIGS. 1 and 2, and is heated together with the header 1 for introducing a low-temperature fluid. Header 2 for low-temperature fluid outflow, oblique AC section 3a and oblique AC section 3b provided on the inflow side and outflow side, high-temperature fluid inlet 5 provided in oblique AC section 3a, and high-temperature fluid outlet provided in oblique AC section 3b 6, a low-temperature fluid 7 provided between the oblique AC section 3a and the oblique AC section 3b.
And a high-temperature fluid 8 and a counter flow portion 4 for exchanging heat.

As shown in FIGS. 3 to 5, the internal structure of the plate-fin type heat exchanger has two steps, namely, a low-temperature fluid introduction header 1 and a low-temperature fluid outflow header 2 as well as a stepped edge 25 around the periphery. On the first rectangular separator 9 (FIG. 5A) provided with two holes 23 and 24 for inserting the header, the heat transfer enhancer 14 for the low-temperature fluid flow path 12 and the two mixed flows Road member 18,
19 (FIG. 5 (b)), and two headers 1,
5 (c) of FIG. 5 is provided on which two holes 23 and 24 for inserting the heat transfer fluid 2 are inserted. 15 and two oblique channel members 2
0 and 21 ((d) in FIG. 5) are repeated two or more times, and in this example, are repeatedly repeated four times, and the first separator 9 and the heat transfer enhancers 14 and 2 for the low-temperature fluid flow path 12 are further stacked thereon. Inclined flow path members 18,
19, the second separator 10 is stacked and fixed on the top, two holes 23 between the second separator 10 and the first separator 9 and into which the following two headers 1 and 2 are inserted, Insert a ring 26, 27 around the circumference of 24, in this example an elliptical arc-shaped section,
A low-temperature fluid introduction header 1 and a low-temperature fluid outflow header 2 are attached to the second separator 10 and the first separator 9, and covers 16a and 17a are fixed on the upper and lower sides. In addition,
In this example, as the rings 26 and 27, the circular cross-sectional shape shown in FIG. 7 as shown in FIG. 7 (b) is used. The shape (c) and the rectangular shape (d) hollowed out in an arc shape can be used.

Next, an example of a method of fixing each member of the plate-fin type heat exchanger will be described. The first separator 9, the second separator 10, the heat transfer enhancer 14 for the low-temperature fluid flow path, The two oblique flow path members 18 and 19, the heat transfer enhancer 15 for the high-temperature fluid flow path 13, and the two oblique flow path members 20 and 21 are stacked with a brazing material interposed therebetween, and are stacked in a predetermined number. After stacking only, the brazing material previously inserted is melted in a high-temperature vacuum furnace while applying the pressure necessary for brazing in the laminating direction, and the members can be bonded to each other. In addition, the rings 26 and 27, the first separator 9 and the second separator 10, and the first separator 9 and the second separator 10
, The low-temperature fluid introduction header 1 and the low-temperature fluid outflow header 2 and the upper and lower covers 16a, 17a can be fixed by welding.

In this plate-fin type heat exchanger, the low-temperature fluid 7 entering the oblique flow path member 18 of the low-temperature fluid flow path 12 from the low-temperature fluid introduction header 1 is supplied to the counterflow section 4 in the same manner as in the prior art.
The high-temperature fluid 8 is heated by the high-temperature fluid 8 entering from the inlet 5 of the oblique channel member 20 of the high-temperature fluid channel 13, flows out of the low-temperature fluid outflow header 2 through the oblique exchange portion 19 of the low-temperature fluid channel 12, The high-temperature fluid 8 after the exchange is the oblique channel member of the high-temperature fluid channel 13.
It flows out from the exit 6 of 21.

This plate-fin type heat exchanger uses a conventional plate of this type by using a ring between the second separator and the first separator and around two holes into which two headers are inserted.・ Three types of separators were required for fin-type heat exchangers, but now only two types of separators are required. That is, it is not necessary to use the conventional second separator (10b).

Next, another example of the present invention will be described. This plate-fin type heat exchanger has an outer shape similar to the outer shape of the one invented by the present inventors and applied for a patent,
As shown in FIGS. 8 and 9, the left-right symmetric counterflow portion 4 that exchanges heat, and the left-right symmetric oblique exchange portions 3c and 3d into which the low-temperature fluid 7 and the high-temperature fluid 8 flow in or out, have the same shape. A low-temperature fluid introduction header 1 and a low-temperature fluid outflow header 2 are arranged symmetrically. The plate-fin type heat exchanger includes a high-temperature fluid flow inlet 5a, 5b from the low-temperature fluid introduction header 1 in the oblique exchange section 3a and the counterflow section 4a.
The high-temperature fluid 8 is heated by the high-temperature fluid 8 that has flowed in, flows out of the low-temperature fluid outflow header 2, and the high-temperature fluid 8 that has undergone heat exchange flows out of the high-temperature fluid outlets 6a and 6b of the oblique exchange section 3c. It is.

As shown in FIGS. 10 and 11, the internal structure of the plate-fin type heat exchanger is provided with a higher edge 25a around the periphery, and a header 1 for introducing a low-temperature fluid and a header 2 for discharging a low-temperature fluid. Two holes 23, 24 to insert one header
A heat transfer enhancer 14a for the low-temperature fluid flow path 12a and a diagonal flow path member 18a having a hole for inserting the low-temperature fluid introduction header 1 on the first separator 9a (FIG. 11A) provided with Oblique channel member 19a provided with a hole for inserting header 2 for cryogenic fluid outflow
11 (b)), a second separator 10a (FIG. 11 (c)) with the first separator 9a turned upside down, and a heat transfer enhancer for the high-temperature fluid flow path 13a. The body 15a and the two inclined flow path members 20a and 21a (FIG. 11B) are stacked twice or more,
In this example, the process is repeated four times, on which the first separator 9a, the heat transfer enhancer 14a for the low-temperature fluid passage 12a, and the two oblique passage members are provided.
18a and 19a are stacked, a second separator 10a is stacked on the uppermost portion to fix each member, and two holes for inserting the two headers between the second separator 10a and the first separator 9a are provided. 23, 24
The rings 26 and 27 having an arc-shaped cross section are inserted around them, fixed to the second separator 10a and the first separator 9a, and the low-temperature fluid introduction header 1 and the low-temperature fluid outflow header 2 are attached. This is for fixing the covers 16a, 16b, 17a, 17b. In this example, the rings 26 and 27 are circular as shown in FIG. 6 and have a circular cross section as shown in FIG. ), U-shaped (c), and square-shaped (d) hollowed out in an arc shape.

The fixing of the first separator 9a, the second separator 9b, the low-temperature fluid introduction header 1 and the low-temperature fluid outflow header 2 of the plate-fin type heat exchanger is described in FIGS. It can be performed in the same manner as the fixing method of the thing.

This plate-fin type heat exchanger is provided with a low-temperature fluid flow path from the inflow header 1 as in the case of the above-mentioned patent application.
The low-temperature fluid 7 entering the inclined channel member 18a of 12a
At 4a, it is heated by the high-temperature fluid 8 entering from the high-temperature fluid flow inlets 5a and 5b, flows out of the low-temperature fluid outflow header 2 through the oblique exchange portion 19a of the low-temperature fluid flow path 12a, and is subjected to heat exchange. The fluid 8 is supplied to the high-temperature fluid outlet 6 of the high-temperature fluid passage 13a.
a, 6b.

The plate-fin type heat exchanger has a ring between the second separator, which is the first separator turned upside down, and the first separator, and around two holes 23, 24 for inserting two headers.
By using 26 and 27, in the above patent application, two types of separators were used, one having a very complicated shape and the other not so complicated, but instead of a very complicated shape, the separator was not so complicated. Can be used by turning it over. That is, the second separator (10c or 11c) having a very complicated conventional shape is not required.

The above-mentioned plate-fin type heat exchanger is provided with the lower covers 16a and 16b on the lowermost first separator 9a.
The upper covers 17a and 17b are directly fixed to the uppermost second separator plate 10a. However, as shown in FIG. 12, the upper covers 17a and 17b are located between the lowermost first separator plate 9a and the lower covers 16a and 16b and the uppermost cover. Between the second separator 10a and the upper covers 17a and 17b, two side plates 29a and 29b provided with two holes for the low-temperature fluid introduction header 1 and the low-temperature fluid outflow header 2 are fixed by brazing up and down. And two headers 1 of these members,
The covers 16a, 16b, 17a, and 17b can be fixed by welding adjacent ones around the hole into which the 2 is inserted.

As described above, the side plates 29a and 29b
The first separator 9a and the second separator 10a have a small thickness and are suitable for those which are difficult to weld.Using the side plates 29a and 29b increases the strength of the plate-fin type heat exchanger. In addition, it becomes easy to install a hanging tool for transportation and a holding jig for connection to an installation place.

It should be noted that the present invention is not limited to only those described in the above embodiments, and various changes can be made without departing from the spirit of the present invention.

[0029]

According to the present invention, the above-described configuration enables
In the above-described rectangular plate-fin heat exchanger of the present invention, three types of separators are required in the conventional plate-fin type heat exchanger of this type, but only two types of separators are required. That is, the conventional second separator (10
It is not necessary to use b), and in the above-mentioned symmetrical plate-fin type heat exchanger of the present invention, the plate-fin type heat exchanger of the above-mentioned patent application of this type has two types of separators. Has been used, but one can be used upside down, that is, the conventional second separator (10c or 11c) is no longer needed, so the second separator of the conventional device can be replaced. It has an excellent effect that there is no need to design and manufacture.

[Brief description of the drawings]

FIG. 1 is a perspective view for explaining a plate-fin type heat exchanger according to one embodiment of the present invention.

FIG. 2 is a top view of the plate-fin heat exchanger of FIG.

FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG. 2;

FIG. 4 is an enlarged cross-sectional view taken along the line BB of FIG. 2;

FIG. 5 is a perspective view of each member of the plate-fin heat exchanger of FIG. 1;

FIG. 6 is a plan view of a ring used in the present invention.

FIG. 7 is a sectional view of the ring of FIG. 6;

FIG. 8 is a perspective view for explaining a plate-fin type heat exchanger according to another embodiment of the present invention.

FIG. 9 is a top view of the plate-fin heat exchanger of FIG.

FIG. 10 is an enlarged cross-sectional view taken along line AA of FIG. 9.

FIG. 11 is a perspective view of each member of the plate-fin heat exchanger of FIG. 9;

FIG. 12 is an enlarged cross-sectional view taken along line AA of FIG. 9 in another embodiment different from that of FIG.

FIG. 13 is a cross-sectional view of a conventional plate-fin heat exchanger.

FIG. 14 is a cross-sectional view of a conventional plate-fin type heat exchanger cut at a different position from FIG.

15 is a perspective view of each member of the plate-fin heat exchanger of FIG.

FIG. 16 is a sectional view of another conventional plate-fin type heat exchanger.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Low temperature fluid introduction header 2 Low temperature fluid outflow header 3a, 3b, 3C, 3d Oblique exchange part 4, 4a Counterflow part 5, 5a, 5b High temperature fluid flow inlet 6, 6a, 6b High temperature fluid outlet 7 Low temperature fluid 8 High temperature fluid 9, 9a, 9b, 9c First separator 10, 10a, 10b, 10c Second separator 11a, 11c Third separator 12, 12a Low temperature fluid channel 13, 13a High temperature fluid channel 14, 14a Low temperature Fluid flow path heat transfer enhancer 15, 15a High-temperature fluid flow path heat transfer enhancer 16, 16a, 16b Lower cover 17, 17a, 17b, upper cover 18, 18a Slanted flow path member on inflow side of low-temperature fluid flow path 19, 19a The oblique flow path member on the outflow side of the low temperature fluid flow path 20, 20a The oblique flow path member 21 on the inflow side of the high temperature fluid flow path, 21, 21a The oblique flow path member 22a 22b, 22c on the outflow side of the high temperature fluid flow path 22d Embossed part 23, 24 Hole for inserting separator header 25, 25a First separator edge 26, 27 Ring 28 Reinforcement 29a, 29b Side plate

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[Procedure amendment]

[Submission date] October 31, 1996

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction contents]

FIG. 3

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Minoru Kojima 229 Togaya, Mizuho-cho, Nishitama-gun, Tokyo Ishikawa Shima-Harima Heavy Industries Co., Ltd. Mizuho Plant

Claims (6)

[Claims] The present invention provides a stepped edge (25) around the periphery and two holes (23, 2) for inserting two headers, a header for introducing a low-temperature fluid (1) and a header for discharging a low-temperature fluid (2).
4) First separator plate (9) with cryogenic fluid flow path (12)
Heat transfer enhancer (14) and two inclined flow path members (18, 19)
A flat second separator (10) provided with two holes (23, 24) into which the two headers are inserted, and a high-temperature fluid flow path (1).
3) Heat transfer enhancer (15) and two inclined flow path members (20, 2)
1) is repeated twice or more in a plate-fin type heat exchanger, wherein two holes (2) for inserting the above two headers between the second separator (10) and the first separator (9) are provided. A plate-fin type heat exchanger characterized in that a ring (26, 27) is inserted around the periphery of each of (23, 24) and fixed to the second separator (10) and the first separator (9). 2. A two-hole (23, 2) for providing two steps of a header (1) for introducing a low-temperature fluid and a header (2) for discharging a low-temperature fluid, while providing a raised edge (25) around the periphery.
4) First separator plate (9) with cryogenic fluid flow path (12)
Heat transfer enhancer (14) and two inclined flow path members (18, 19)
A flat second separator (10) provided with two holes (23, 24) into which the two headers are inserted, and a high-temperature fluid flow path (1).
3) Heat transfer enhancer (15) and two inclined flow path members (20, 2)
1) is repeated twice or more in order, and the first separator (9), the heat transfer enhancer (14) for the low-temperature fluid flow path (12) and the two oblique flow path members (18) are further stacked thereon. , 19), a second separator (10) on top, two holes between the second separator (10) and the first separator (9) and for inserting the two headers. Rings (26, 27) are inserted around (23, 24) and fixed to the second separator (10) and the first separator (9), and the header (1) for cryogenic fluid introduction and the cryogenic fluid outflow A plate-fin type heat exchanger characterized in that a header (2) is attached and covers (16, 17) are fixed above and below. 3. A two-hole (23, 2) for providing two steps of a header (1) for introducing a low-temperature fluid and a header (2) for discharging a low-temperature fluid while providing a higher step edge (25a) around the periphery.
4) A symmetrical first separator (9a) provided with a symmetrical heat transfer enhancer (14a) and 2
Symmetric diagonal flow path members (18a, 19a), a second separator (10a) with the first separator (9a) turned upside down, and a symmetrical transmission for the hot fluid flow path (13a). In a plate-fin type heat exchanger in which a heat promoting body (15a) and two symmetrical oblique flow path members (20a, 21a) are repeatedly stacked two or more times, a second separator (10a) and a first separator (10a) are provided. Insert a ring (26, 27) between the separators (9a) and around the two holes (23, 24) into which the two headers are inserted to insert the second separator (10a) and the first separator. (9a) Fixing plate
Fin heat exchanger. 4. A step (2a) is provided around the periphery, and two holes (1) for inserting two headers (1, 2), a header (1) for introducing a low-temperature fluid and a header (2) for discharging a low-temperature fluid, are provided. 23, 24) symmetrical first separator (9a)
And a symmetrical heat transfer enhancer (14a) for the low temperature fluid flow path (12a) and two symmetrical oblique flow path members (18a, 19a).
) And the second separator (10a) with the first separator (9a) turned over.
And a symmetrical heat transfer enhancer (15a) for the high-temperature fluid flow path (13a) and two symmetrical oblique flow path members (20a, 21)
a) is repeated two or more times in order, and stacked on the first separator (9a) and the symmetrical heat transfer enhancer (14a) for the low-temperature fluid flow path (12a) and two symmetrical heat transfer enhancers. Of the oblique flow path members (18a, 19a), the second separator (10a) is superimposed on the uppermost part, and the second separator (10a) and the first separator (9a) are provided. Insert the rings (26, 27) around the two holes (23a, 24a) for inserting the header and fix them to the second separator (10a) and the first separator (9a). A plate-fin type heat exchanger comprising: 1) a low-temperature fluid outflow header (2); and upper and lower covers (16a, 16b, 17a, 17b). 5. The ring (26, 27) has an arc-shaped cross section.
The plate-fin type heat exchanger according to any one of claims 1 to 4, wherein the heat exchanger is one of a quadrangular shape cut out in a U shape and an arc shape. 6. Side plates between the lowermost first separator (9a) and the lower cover (16a, 16b) and between the uppermost second separator (10a) and the upper cover (17a, 17b). 5. The plate-fin type heat exchanger according to claim 4, wherein the heat exchanger is inserted and fixed.