JP4916967B2 - Connection structure of module type heat exchanger - Google Patents

Description

  The present invention is a connection structure of a module type heat exchanger in which a plurality of module cores are connected vertically and horizontally, and both upper and lower ends thereof are connected by a pair of collective tanks, and has a large capacity heat exchange such as a radiator for construction machinery The most suitable for the vessel.

As module-type heat exchangers in which module cores are connected in the vertical direction, those described in the following patent documents and others have been proposed.
These are a module tank that is to be connected to the top and bottom of a small tank, with a flange part, an independent short connection pipe interposed between them, and a connection pipe and flange part fastened and fixed via bolts. It is.
In addition, connecting pipes are integrally projected on the small tanks located at the upper and lower ends, and a flange-type sealing material is interposed between the connecting pipe and the collecting tank.

Japanese Utility Model Publication No. 1-74470 Japanese Utility Model Publication No. 62-118962

When the upper and lower module cores are connected to each other via an independent short connecting pipe, a flange portion, and a bolt, there is a drawback that the assembly is troublesome because the fastening portion is narrow. At the same time, the connection structure becomes complicated, and the entire heat exchanger has to be expensive.
Furthermore, when each module core moves up and down due to vibration, the sealing performance between the collective tank and the upper and lower small tanks is impaired, and there is a risk of causing liquid leakage therefrom.
Then, this invention makes it a subject to solve the problem which concerns.

In the first aspect of the present invention, a small tank (4) is disposed at both ends of a core (3) in which a large number of fins (1) and tubes (2) are arranged in parallel, and a connecting hole is formed in the small tank (4). Having a plurality of module cores (6) provided with (5),
In the connection structure of the module type heat exchanger in which the connection holes (5) of the small tanks (4) of each module core (6) are connected in series,
A first pipe (7) and a second pipe (8) protrude from the edge of the connecting hole (5) of each small tank (4) connected in series, and the outer periphery of the first pipe (7). Is formed slightly smaller than the inner periphery of the second pipe (8), and the second pipe (8) is fitted to the first pipe (7) via the seal ring (9). It is a connection structure of a type heat exchanger.

The present invention according to claim 2 is the method according to claim 1,
In each small tank (4) connected to each other, the first pipe (7) and the second pipe (8) are positioned in the middle, and the small tank (4) with respect to each pipe (7) (8). A pair of flange portions (10) for fastening projecting in the width direction are provided on both sides in the longitudinal direction of each of the flange portions (10), and the flange portions (10) are fixed to each other by a fastener (11), and each small tank (4) It is the connection structure of the module type heat exchanger characterized by the space | interval being fastened and fixed.

The present invention described in claim 3 provides the method according to claim 2,
Plural pairs of module cores (6) connected in series with each other are arranged in parallel, and the parallel module cores (6) are connected to each other via a seal ring (9) by a pair of upper and lower collecting tanks (12). And
Both sides are integrally connected by the side frame (13), and the intermediate frame (13a) is connected between the side frames (13) at an intermediate position in the vertical direction.
The module type heat exchanger connection structure is characterized in that the intermediate frame (13a) and the flange portion (10) of each small tank (4) are detachably fastened and fixed.

The present invention as set forth in claim 4 is characterized in that, in claim 3,
The module type heat exchanger connection structure is characterized in that the end portion of the side frame (13) and the center of the intermediate frame (13a) are detachably connected and fixed by the brace (14). .
The present invention according to claim 5 is the invention according to claim 4,
This is a connection structure for a module type heat exchanger in which the plurality of braces (14) are formed in a V shape in the upper half of the entire heat exchanger and in an inverted V shape in the lower half.

In the connection structure of the module type heat exchanger according to the present invention, in the pair of module cores 6 connected in series with each other, the first pipe 7 and the second pipe 8 protrude from the edge of the connection hole 5 of each small tank 4. Since the second pipe 8 is fitted to the first pipe 7 via the seal ring 9, the sealing performance between the small tanks 4 is high.
That is, the first pipe 7 and the second pipe 8 that are fitted to each other ensure a sufficient axial length, and a sufficient seal length is ensured even if vibration occurs in the heat exchanger. Can prevent.

  In the above configuration, as in claim 2, the flange portions 10 project in pairs in the width direction with respect to the first pipe 7 and the second pipe 8, and the flange portions 10 are fastened and fixed by the fasteners 11. The first pipe 7 and the second pipe 8 are securely fixed and the heat exchanger with a high reliability of the seal portion is obtained.

In the above configuration, as in claim 3, a plurality of pairs of module cores 6 connected in series with each other are arranged in parallel, and the parallel module cores 6 are connected to each other via a seal ring 9 by a pair of upper and lower assembly tanks 12. Connected to each other,
The side frames 13 are integrally connected to both sides, and the intermediate frames 13a are connected between the side frames 13 at an intermediate position in the vertical direction.
When the intermediate frame 13a and the flange portion 10 of each of the small tanks 4 are detachably fastened, the central portion of the entire heat exchanger is prevented from shaking, and as a result, a pair of upper and lower sets The stability of the seal between the tank 12 and each small tank 4 can be ensured.

In the above configuration, as in claim 4, when the end portion of the side frame (13) and the center of the intermediate frame (13a) are detachably connected and fixed by the brace (14), The shaking of the central part of the entire exchanger can be further reliably prevented, and the stability of the seal between the pair of collecting tanks 12 positioned above and below and each small tank 4 can be ensured.
In the above configuration, the brace 14 is formed in a V shape in the upper half of the entire heat exchanger and in an inverted V shape in the lower half as in claim 5. As a result, a more reliable heat exchanger connection structure is obtained.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a connection structure of module type heat exchangers according to the present invention, and is an exploded perspective view of a main part for connecting between upper and lower cores 3. 2 is a longitudinal sectional view of the main part showing the assembled state, FIG. 3 is a front view showing the entire heat exchanger, and FIG. 4 is a front view showing a state where an intermediate frame and a brace are attached to the heat exchanger, 5 is a cross-sectional view taken along line VV in FIG. 4, and FIG. 6 is a cross-sectional view taken along line VI-VI in FIG.

In this heat exchanger, as shown in FIG. 3, a pair of upper and lower pair of module cores 6 are arranged in three rows, their upper and lower ends are connected to a pair of collecting tanks 12, and their left and right sides are side frames 13. And both side frames 13 are connected by a pair of intermediate frames 13a at an intermediate position in the vertical direction. Further, the brace 14 fixes the end of the side frame 13 and the center of the intermediate frame 13a.

As shown in FIG. 1, each module core 6 includes a large number of fins 1 and tubes 2 arranged in parallel to form a core 3, and a pair of small tanks 4 are attached to the upper and lower ends of the core 3. The small tank 4 includes a small tank body and a tube plate 15, and the upper and lower ends of each tube 2 penetrate the tube plate 15.
A connecting hole 5 is provided in the center of each small tank 4 in the longitudinal direction, and a first pipe 7 and a second pipe 8 are fixed to the edge of the hole by brazing or welding.

  A ring groove is formed on the outer periphery of the first pipe 7, and a seal ring 9 is fitted in the ring groove. The inner diameter of the second pipe 8 is slightly larger than the outer diameter of the first pipe 7, and the second pipe 8 is liquid-tightly fitted to the outer periphery of the first pipe 7 via a seal ring 9. The In addition, flange portions 10 are fixed to the outer surfaces of the upper and lower small tanks 4 by brazing or welding, and bolt holes 20 are provided at both ends thereof. As is apparent from FIG. 3, the flange portion 10 is located on both sides of the first pipe 7 and the second pipe 8. The space between the pair of flange portions 10 is fastened and fixed by a fastener 11 including a bolt and a nut. Thus, the upper and lower first pipes 7 and second pipes 8 are easily and reliably fixed.

Next, as shown in FIG. 6, the 1st pipe 7 is attached to the hole edge part of the connection hole 5 of each small tank 4 of each module core 6 located in the upper and lower ends of the whole heat exchanger. A plurality of connecting holes (three in this example) are formed in the assembly tank 12 at positions aligned with the first pipe 7 of each module core 6 (FIG. 3), and the second pipe 8 is formed at the edge of the hole. Is installed. The second pipe 8 is fitted to the first pipe 7, and the two are connected in a liquid-tight manner via the seal ring 9.
Next, as shown in FIG. 3, side frames 13 are attached to both sides of the entire heat exchanger, and the side frames 13 and the collecting tank 12 are integrally and detachably connected via a fastener (not shown). The

Further, as shown in FIGS. 4 and 5, the side frames 13 are connected by a pair of intermediate frames 13a at the intermediate position in the vertical direction. That is, a pair of L-shaped (angle member) intermediate frames 13a are separated so as to sandwich the pair of flange portions 10, and both end portions of the intermediate frames 13a are detachably attached to the side frames 13 via brackets 17a. Etc. are fixed by a fastener 11a.
In the intermediate frame 13a, bolt holes (not shown) are formed at positions aligned with the bolt holes of the flange portions 10, and the bolts and nuts are provided between the pair of intermediate frames 13a in a state where the pair of flange portions 10 are sandwiched. It is fastened and fixed by a fastener 11 comprising the above. As is clear from FIG. 5, the intermediate frame 13 a is provided on each of the front surface side and the back surface side of each core module 6.

  As shown in FIG. 4, the center of each intermediate frame 13a and the end of the side frame 13 are connected by a brace 14 via a bracket 17 and a fastener 11a. In this example, one end of the pair of bracing members 14 is fixed to the center bracket 17 in a V shape by means of welding or the like, and the other end thereof is welded to the pair of brackets 17 at the end of the side frame 13 or the like. It is fixed by means. The central bracket 17 is fixed to the center of the intermediate frame 13a by a fastener 11a such as a screw, and the brackets 17 at both ends are fixed to the side frame 13 by bolts as shown in FIG.

  In this example, the upper half of the entire heat exchanger is formed in a V shape and the lower half is formed in an inverted V shape as shown in FIG. . Then, vibrations in use (when used as a radiator of a large construction machine, etc.) prevent the module core 6 located in the center from moving up and down, and the collective tank 12 and the small tank 4 based on the movement This prevents leakage of the connecting portion.

The principal part vertical disassembled perspective view of the connection structure of the module type heat exchanger of this invention. It is a principal part longitudinal cross-sectional view which shows the same assembly state, Comprising: II-II arrow sectional drawing of FIG. The front view which shows the whole heat exchanger.

The front view which shows the state which attached the intermediate | middle frame and the brace to the same heat exchanger. FIG. 5 is a schematic cross-sectional view taken along arrow VV in FIG. 4. VI-VI arrow cross-sectional schematic of FIG.

Explanation of symbols

1 Fin 2 Tube 3 Core 4 Small Tank 5 Connection Hole 6 Module Core 7 First Pipe 8 Second Pipe

9 Seal ring
10 Flange
11 Fastener
11a Fastener
12 Collecting tank
12a tube plate
13 Side frame
13a Intermediate frame

14 Braces
15 Tube plate
17 Bracket
17a bracket
18 Entrance pipe
19 Screw
20 bolt hole

Claims (5)

A plurality of modules in which a small tank (4) is arranged at both ends of a core (3) in which a large number of fins (1) and tubes (2) are arranged in parallel, and a connecting hole (5) is provided in the small tank (4) Having a core (6),
In the connection structure of the module type heat exchanger in which the connection holes (5) of the small tanks (4) of each module core (6) are connected in series,
A first pipe (7) and a second pipe (8) protrude from the edge of the connecting hole (5) of each small tank (4) connected in series, and the outer periphery of the first pipe (7). Is formed slightly smaller than the inner periphery of the second pipe (8), and the second pipe (8) is fitted to the first pipe (7) via the seal ring (9). Connection structure of type heat exchanger. In claim 1,
In each small tank (4) connected to each other, the first pipe (7) and the second pipe (8) are positioned in the middle, and the small tank (4) with respect to each pipe (7) (8). A pair of flange portions (10) for fastening projecting in the width direction are provided on both sides in the longitudinal direction of each of the flange portions (10), and the flange portions (10) are fixed to each other by a fastener (11), and each small tank (4) A module type heat exchanger connection structure characterized in that the space is fastened and fixed. In claim 2,
Plural pairs of module cores (6) connected in series with each other are arranged in parallel, and the parallel module cores (6) are connected to each other via a seal ring (9) by a pair of upper and lower collecting tanks (12). And
Both sides are integrally connected by the side frame (13), and the intermediate frame (13a) is connected between the side frames (13) at an intermediate position in the vertical direction.
The module-type heat exchanger connection structure characterized in that the intermediate frame (13a) and the flange portion (10) of each small tank (4) are detachably fastened and fixed. In claim 3,
A module type heat exchanger connection structure characterized in that the end portion of the side frame (13) and the center of the intermediate frame (13a) are detachably connected and fixed by the brace (14). In claim 4,
A connection structure of a module type heat exchanger in which a plurality of the bracing members (14) are formed in a V shape in the upper half of the entire heat exchanger and formed in an inverted V shape in the lower half.

Images