JPH063352B2 - Panel heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a structure in which a first fluid and a second fluid alternately flow through heat exchange passages defined by plates arranged in parallel at predetermined intervals. The present invention relates to a panel type heat exchanger for exchanging heat via the plate.

(Prior Art and its Problems) In order to increase the heat exchange efficiency in this type of panel heat exchanger, the surface area of the plate partitioning each heat exchange passage must be increased. As a method for increasing the plate surface area, for example, Japanese Patent Application No. 58-150231
No. (Shokai 60-60592), the surface area of the plate is increased by integrally forming valley-shaped or mountain-shaped ridges on the surface of the plate by pressing. Method and, for example, JP-A-52
As described in JP-A-121843, a method of welding and fixing fins to the surface of a plate is known.

However, in the first press working method, the height and interval of the ridges are restricted, so that a sufficient surface area increasing effect cannot be obtained. In the second fin welding method as well, a space for welding each fin must be secured between the adjacent fins, so there is a limit even if an attempt is made to increase the number of fins by sufficiently sandwiching the fin intervals.

Further, as a problem of the panel heat exchanger as described above, when there is a difference in the internal pressure of the heat exchange passages on both sides of one plate, the thin plate can be deformed to the low pressure passage side. It has been mentioned that it is inferior in pressure resistance.

(Means for Solving Problems) The present invention proposes a panel-type heat exchanger capable of solving the above-mentioned conventional problems, and the reference numerals of the embodiments whose features will be described later are parenthesized. The panel type heat exchanger of the present invention has a large number of jutting plates arranged in parallel on the flow path side of the both side plates (9, 10) forming the heat exchange flow paths (7a to 8c). In the panel type heat exchanger configured as above, the projecting plate portions project on both sides of the U-shaped groove-shaped plate material (26) having a U-shaped cross section secured to the plates (9, 10) via the bottom plate portion (26c). The plate portion (26a, 26b), the protruding plate portion (26a, 26b), the length direction of the heat exchange channel
(7a to 8c) is approximately parallel to the flow direction of the fluid, and each grooved plate (26) of both side plates (9, 10) has a protruding plate (26a, 26b) on each mating grooved plate. Both side protruding plate parts of (26) (26a,
26b) so that they are fitted to each other in a disagreeable manner, and the tips of the protruding plate portions (26a, 26b) are attached to the bottom plate portion (26c) or the counterpart plate (26c) of the counterpart channel member (26). It is in contact with 9, 10).

(Example) Hereinafter, one example of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, the panel heat exchanger 1 of this embodiment is configured by laminating four panel units 2a to 2d, and one end of the longitudinal direction of the panel heat exchanger 1 is a first side. A fluid inflow port 3 and a second fluid outflow port 4 are arranged in parallel, and a first fluid outflow port 5 is provided on the back side thereof at a position concentric with the first fluid inflow port 3 and further in the longitudinal direction. On the other side,
An inflow port 6 for the second fluid is provided directly below the outflow port 5 for the first fluid.

As shown in FIGS. 4 and 6, each panel unit 2a
Heat exchange flow passages 7a to 7d for the first fluid are formed inside 2d to 2d, and heat exchange flow passages 8a to 8c for the second fluid are formed between the panel units 2a to 2d. The structure of each of the panel units 2a to 2d will be described with reference to the panel unit 2c shown in FIGS. 5, 7, and 8 as an example. Two plates 9 and 10 are formed along the periphery of the recesses. At the relative bottoms of the groove portions 11, 12, seam welding 13 is performed to fix and integrate them in an airtight manner,
Plates 9 and 1 are provided on the periphery of the plate outside 12
The joints 14 and 15 are formed outside the outer side surface of 0 and parallel to the outer side surfaces of the plates 9 and 10. or,
Out of the four corners of both plates 9 and 10, at two corners on one diagonal line, a circular outward protruding portion 16 that concentrically projects outward.
To 19 are provided, and the outward projecting portions 16 on the plate 9 side,
In principle, the openings 16a and 18a are concentrically provided in the opening 18, and the outward protruding portions 17 and 19 on the plate 10 side have openings 17a and 19 having a diameter slightly larger than the openings 16a and 18a.
a is provided concentrically. Circular inward projecting portions 20 to 23 that are concentrically projecting inward and abutting each other are provided at the other two diagonal corners of the plates 9 and 10.
In principle, openings 21a and 23a are concentrically provided in the inward projecting portions 21 and 23 of the plate 10, and inward projecting portions 20 and 22 of the plate 9 are slightly larger in diameter than the openings 21a and 23a. 20a and 22a are provided concentrically,
Inward projections 20, 21 and 22, 23 facing each other
Are hermetically fixed to each other at the inner peripheral edges of the openings 20a and 22a by welding 24 and 25.

In addition, on both side surfaces of the plates 9 and 10, except for the portions where the protrusions 16 to 23 are formed at both ends in the longitudinal direction,
The channel plate 26 has a length direction parallel to the plate longitudinal direction and approximately 1/3 of the width of the channel plate 26 in the plate width direction.
Are welded and fixed so that they are juxtaposed at a small interval.
At this time, as shown in FIG. 7B, each of the grooved plate members 26 fixed to the inner side of the plates 9 and 10 has two protruding plate portions adjacent to each other with the small interval of the groove plate members 26 on the other side. It fits over 26a and 26b. The positions of the grooved plate members 26 fixed to the outer sides of the plates 9 and 10 are the same as the positions of the grooved plate members 26 fixed to the inner side of the plates, respectively.
The two groove-shaped plate portions 26, which are located on both sides of the plate 9 or 10 with the plate 9 or 10 interposed therebetween, have seam welds 27 at their bottom plate portions 26c so that the plate 9 or 10 at the intermediate position is formed.
Are fixed at the same time. In addition, the protruding plate portion 2 of each channel plate member 26
The height of 6a, 26b is such that the tip ends of the grooved plate material 2 on the other side.
The bottom plate portion 26c of No. 6 is abutted. In FIGS. 6 and 7A, the protruding plate portion 26 of each channel plate member 26 is shown.
a and 26b are provided at the bottom plate portion 26 of the mating groove plate member 26.
Although it is slightly separated from c, this is to make it easier to identify each channel plate member 26.

The panel units 2a to 2d configured as described below are piled up as shown in FIGS. 4 and 6. At this time, as shown in the drawing, the outward protruding portion 1 protruding between the panel units.
Since 6, 17, 18 and 19 contact each other concentrically with each other, when the panel unit 2c is overlaid on the panel unit 2d, the outward projecting portions 16, 18 of the panel unit 2c.
Through the openings 16a, 18a of the panel units 2d, 2
The outwardly projecting portions 16 and 17 and 18 and 19 that are in contact with each other between c are airtightly fixed to each other by welding 28 at the inner peripheral edges of the openings 17a and 19a, and then the panel units 2b and 2a are sequentially stacked. As mentioned above, the panel unit 2
The outward protruding portions 16 and 17 and 18 and 19 which are in contact with each other between c and 2b and between the panel units 2b and 2a are sequentially welded as described above.

At the same time, between the panel units, the peripheral recessed groove portions 11,
12 are opposed to each other to form an annular bulging space 29. An annular partition plate 3 that divides the annular bulging space 29 into two
The peripheral part of 0 (see FIG. 11) is sandwiched between the peripheral joint parts 11 and 12 adjacent to each other between both panel units, and the joint parts 11 and 12 and the annular partition plate 30 are welded at the outer peripheral edge part. 31 is fixed and integrated with each other.

As described above, the panel type heat exchanger 1 is assembled by laminating and integrating the panel units 2a to 2d. In the panel unit 2a, the peripheral joint portion 14 extending outward and the outside of the plate 9 are fixed. The groove-shaped plate member 26 is omitted, and the outward projecting portion 16 and the inward projecting portion 20 are provided with a base 32 for forming the first fluid inlet 3 and the second fluid outlet 4.
33 are concentrically fixed and protruded, the opening 17a of the outward protruding portion 17 and the opening 18a of the outward protruding portion 18 are closed by the cover plates 34 and 35, respectively, and the inward protruding portion 23 is provided with an opening 23a. It is closed without. In the panel unit 2b, the opening 19a of the outward protruding portion 19 is closed by the cover plate 36, and the inward protruding portion 21 is closed without the opening 21a.
In the panel unit 2c, the inward projection 23 is closed without the opening 23a, as in the panel unit 2a. And in the panel unit 2d,
The peripheral joint portion 15 extending to the outside and the groove plate member 26 fixed to the outside of the plate 10 are omitted, and the outward protruding portion 17 is omitted.
The mouthpieces 37 and 38 forming the first fluid outlet 5 and the second fluid inlet 6 are concentrically fixed to the inward projecting portion 23, and the outward projecting portion 19 and the inward projecting portion 21 are Opening 1
9a and 21a are not provided and are closed.

Therefore, the first fluid inlet 3 is connected to the panel units 2a-2
each heat exchange flow path 7a to 7d in d, and the outward protruding portion 18,
Communication passages 39, 4 constituted by 19 openings 18a, 19a
0, and openings 16a and 17a of the outward protruding portions 16 and 17
Is communicated with the first fluid outlet port 5 via the communication passage 41 constituted by
2d and the heat exchange flow paths 8a to 8c and the openings 20 of the inward projections 20 and 21 of the panel units 2a and 2c.
a, 21a, and the openings 2 of the inward projecting portions 22, 23 of the panel units 2b, 2d.
It communicates with the second fluid outlet 4 via the communication passages 44, 45 constituted by 2a, 23a.

That is, the first fluid supplied to the inflow port 3 flows in zigzag through the heat exchange flow paths 7a to 7d in each of the panel units 2a to 2d, reaches the outflow port 5, and is supplied to the inflow port 6. The two fluids flow through the heat exchange channels 8a to 8c formed between the panel units 2a to 2d in a zigzag shape in a direction opposite to the flow direction of the first fluid and reach the outlet 4. However, between the first fluid flowing in each heat exchange passage 7a to 7d and the second fluid flowing in each heat exchange passage 8a to 8c via the plates 9 and 10 partitioning each passage. Heat exchange takes place. During this heat exchange, the plates 9 and 10 are fixed to the plates 9 and 10 by seam welding 27 and the flow paths 7a to 7d and 8a are formed.
The groove-shaped plate member 26 projecting into the insides of 8a to 8c acts as a heat conduction fin between each fluid and each plate 9 and 10, and also with respect to the fluid in each of the flow paths 7a to 7d and 8a to 8c. Performs a rectification function.

Further, the channel-shaped plate member 26 fixed to the plates 9 and 10
Not only in each panel unit 2a to 2d but also in each panel unit 2a to 2d, the tips of the projecting plate portions 26a and 26b are the bottom plate portions 26c of the groove-shaped plate members 26 on the other side. The plates 9 and 10 are prevented from being deformed to the low pressure side due to the pressure difference between the plates 9 and 10 by abutting against the plate 9 and 10 to regulate the distance between the plates 9 and 10. In order to further enhance the pressure resistance effect, the outer plate 9 of the panel unit 2a and the outer plate 10 of the panel unit 2d are made of thicker plates than the other plates, or reinforcing reinforcing plates are stacked on both ends. The entire panel heat exchanger can be tightened in the panel unit stacking direction with bolts and nuts.

Further, as shown in FIGS. 9 and 10, the channel plate member 26 is
By pressing both protruding plate portions 26a, 26b in a wavy shape in the longitudinal direction, the protruding plate portions 26a, 26b
Since the buckling strength can be significantly increased, even if the channel-shaped plate member 26 is formed of an extremely thin plate (for example, a thin plate of about 0.3 mm), sufficient pressure resistance can be obtained. It also helps to improve heat exchange efficiency.

The annular partition plate 30 that divides the annular bulging space 29 around the heat exchange passages 8a to 8c formed between the panel units 2a to 2d into two parts is used to increase the overall strength and heat exchange efficiency. Although useful, the presence of the annular partition plate 30 alone causes the flow resistance in the annular bulging space 29 to become a flow passage portion containing a large number of groove-shaped plate members 26 in the heat exchange flow passages 8a to 8c. Since it is significantly low in comparison, the fluid may short-pass within the annular bulging space 29.
Therefore, as shown in FIGS. 11 and 12, on both side surfaces of the left and right sides along the fluid flow direction of the annular partition plate 30,
A resistance member 46 similar to the channel plate 26 can be fixed by seam welding 47 along the fluid flow direction. The resistance member 46 may have any cross-sectional shape, for example, the annular partition plate 30 as shown in FIG.
Two resistance members 47 and 48 are fixed in parallel to each surface of
It is also possible to configure so that the tips of the adjacent portions of both resistance members 47 and 48 come into contact with the deepest portions of the recessed groove portions 11 and 12 of the plates 9 and 10 in the panel units on both sides.

In the above-described embodiment, the fluid is configured to flow in a zigzag shape. However, as shown in FIG. 14, for example, the first fluid inlet 3 and the second fluid outlet 4 are arranged side by side in the upper portion, and the lower portion in the lower portion. The first fluid outflow portion 5 and the second fluid inflow port 6 are arranged side by side, and the first fluid inflow port 3 is concentric with the inflow port 3 and penetrates the flow paths 8a to 8c between the respective panel units 2a to 2d. Through the communication passages 49a to 49c configured so as to communicate with the upper portions of the flow paths 7a to 7d in each of the panel units 2a to 2d, and the first fluid outlet 5 is concentric with the outlet 5. The second fluid inlet port 6 is made to communicate with the lower portion of the flow paths 7a to 7d through the communication passages 50a to 50c configured to penetrate the flow paths 8a to 8c between the panel units 2a to 2d.
Are concentric with the inflow port 6 and each panel unit 2b.
The second fluid outlet 4 is communicated with the lower portions of the flow paths 8a to 8c between the panel units 2a to 2d via the communication paths 51a to 51c configured to penetrate the flow paths 7b to 7d in 2d. The flow paths 8a to 8c are concentrically arranged with the outlet port 4 through communication paths 52a to 52c configured to penetrate the flow paths 7a to 7c in the respective panel units 2a to 2c.
It is also possible to make the first fluid circulate through the flow paths 7a to 7d from the top to the bottom and the second fluid circulate through the flow paths 8a to 8c from the bottom to the top.

Further, the present invention can be applied to a decomposable panel type heat exchanger in which a sealing material is sandwiched between the panel units 2a to 2d to form the flow paths 8a to 8c, and each panel unit 2a to Also in a panel type heat exchanger of the type in which the connected panel units 2a to 2d are set in the flow passage of the second fluid without forming independent closed type flow paths 8a to 8c between 2d. Applicable. In this case, the channel plate members 26 can be provided so as to project also on the outer sides of the panel units 2a and 2d at both ends.

FIG. 15 shows a groove-shaped plate member 26 that is fixed in parallel to the plates 9 and 10 at the same interval as the width thereof and is fixed to the facing surfaces of the plates 9 and 10 to project into the same flow path. Plate material 2
6 shows an example configured to be fitted to the protruding plate portion 26a on one side of the groove plate member 26 on the other side. The method of fixing each channel-shaped plate member 26 to the plates 9 and 10 is the same as the method described above. In this case, since the other protruding plate portion 26b of each grooved plate member 26 has to contact the plate 9 or 10, it is higher than the one protruding plate portion 26a by the plate thickness of this grooved plate member 26. There is a need.

(Operation and Effect of the Invention) According to the panel heat exchanger of the present invention that can be implemented as described above, both plates (9, 10) forming the heat exchange flow paths (7a to 8c) are formed.
Rigid side plates (9,10)
Since the protruding plate portion (fin) is provided on the flow path side of
Forming a large number of protruding plate portions by closing the intervals of the protruding plate portions,
As a result, the heat transfer surface area of the both side plates can be greatly increased to enhance the heat exchange efficiency. In particular, according to the configuration of the present invention, the following special operational effects can be obtained. That is ,. Attach the protruding plate part to the bottom plate part (26
Since it is composed of the protruding plate portions (26a, 26b) on both sides of the groove-shaped plate member (26) having a U-shaped cross section fixed via c), the two protruding plate portions (26a, 26b) are formed into one groove-shaped member. It can be formed by attaching the plate member (26). In other words, the protruding plate portion (26a, 2
Compared with the number of 6b), the man-hours for welding to both side plates (9, 10) can be halved, and the cost can be reduced.

． Moreover, each channel plate material (26) of both side plates (9, 10) is
Since the respective projecting plate portions (26a, 26b) are fitted between the projecting plate portions (26a, 26b) on both sides of the mating groove-shaped plate material (26), the plates (9, 10 ), The width of the grooved plate material bottom plate portion (26c) to be welded and adhered to is equal to or more than twice the distance between the adjacent protruding plate portions (26a, 26b) in the heat exchange passage, and the protruding plate portion (26a, It is possible to easily carry out welding and fixing work to the plates (9, 10) while sandwiching the space between 26b).

In particular, as shown in the examples, the grooved plate materials (26) are fixed in parallel at a small interval of about 1/3 of the width (eg, about 10 mm), and the adjacent grooved plate materials (26 ) Two protruding plates (26a, 2
If the groove-shaped plate member (26) fixed to the mating plate (9, 10) is fitted over the 6b), the effect will be great.

． Further, since the tip of each protruding plate portion (26a, 26b) is in contact with the bottom plate portion (26c) of the mating groove plate (26) or the mating plate (9, 10), the plate (9, 10) Even if there is a difference in the internal pressure of the heat exchange channels on both sides of the plate (9, 10) is deformed to the low pressure side by a large number of protruding plate portions (26a, 26b) arranged in parallel at a small interval as described above. It can be surely prevented. Therefore, the pressure resistance of the entire heat exchanger can be improved.

． As described above, the tip of each protruding plate portion (26a, 26b) is attached to the bottom plate portion (26c) of the mating channel member (26) or the mating plate (9,
10), the space in the heat exchange channel will be
(26a, 26b) will be divided, the fluid will be diverted into the small passage defined by each of the protruding plate portion (26a, 26b), in the present invention, the protruding plate portion (26a, In 26b), the length direction thereof is substantially parallel to the fluid flow direction in the heat exchange flow passages (7a to 8c), so that it does not hinder the smooth flow of the fluid in the heat exchange flow passages. Absent.

[Brief description of drawings]

1 is a schematic side view, FIG. 2 is the same front view, FIG. 3 is the same rear view, FIG. 4 is a developed sectional view taken along line XX of FIGS. 2 and 3, and FIG. FIG. 6 is a developed sectional view of one panel unit taken along the line XX, FIG. 6 is a transverse sectional view taken along the line YY of FIG. 2, and FIG. 7A is taken along the line YY of one panel unit. FIG. 7B is a partial enlarged view of the agent 7 FIG. A, FIG. 8 is a front view of one panel unit, FIG. 9 is a cross-sectional plan view showing a modification of the channel plate, and FIG. Fig. 11 is a side view of the same, Fig. 11 is a front view of an annular partition plate to which a resistance member is attached, Fig. 12 is an enlarged cross-sectional view of an essential part of the annular partition plate, and Fig. 13 is a modification of the resistance member of Fig. 12. FIG. 14 shows a modified example of the whole panel heat exchanger and is a schematic sectional view corresponding to the XX line expanded sectional view, and FIG. 15 shows an array modified example of the channel plate material. Cross-sectional plan view of essential parts A. 2a to 2d ... Panel unit, 3 ... First fluid inlet port, 4
2nd fluid outflow port, 5 ... 1st fluid outflow port, 6 ... 2nd fluid inflow port, 7a-7d ... 1st fluid heat exchange flow path, 8a-8
c ... Heat exchange passage of second fluid, 9, 10 ... Panel for constituting panel unit, 11, 12 ... Peripheral recessed groove portion, 13, 2
7 ... Seam welding, 14, 15 ... Peripheral joint, 16-19
... outward protrusions 20 to 23 ... inward protrusions 16a to
19a, 20a-23a ... Opening, 24, 25, 26, 3
DESCRIPTION OF SYMBOLS 1 ... Welding, 26 ... Channel-shaped plate material, 26a, 26b ... Protruding plate part, 26c ... Bottom plate part, 29 ... Annular swelling space, 30 ... Annular partition plate, 32, 33, 37, 38 ... Bases, 34-36
... Cover plate, 39-45, 49a-52c ... Communication path, 46-48 ... Resistance member.

Claims (2)

[Claims] 1. A panel-type heat exchanger comprising a plurality of protruding plate portions arranged in parallel on the flow path side of both side plates (9, 10) forming heat exchange flow paths (7a-8c), The projecting plate portion is composed of both side projecting plate portions (26a, 26b) of a U-shaped channel plate member (26) having a U-shaped cross section, which is fixed to the plate (9, 10) via a bottom plate portion (26c). The length direction of the protruding plate portions (26a, 26b) is a heat exchange channel.
(7a to 8c) is approximately parallel to the flow direction of the fluid, and each grooved plate (26) of both side plates (9, 10) has a protruding plate (26a, 26b) on each mating grooved plate. Both side protruding plate parts of (26) (26a,
26b) so that they are fitted to each other in a disagreeable manner, and the tips of the protruding plate portions (26a, 26b) are attached to the bottom plate portion (26c) or the counterpart plate (26c) of the counterpart channel member (26). Panel heat exchanger characterized by being in contact with 9, 10). 2. A protruding plate portion (26a, 26b) of the channel plate member (26).
The panel type heat exchanger according to claim 1, wherein the heat exchanger is processed into a wavy shape in its length direction.