JPS63217193A - Heat exchanger elements - Google Patents

Abstract

PURPOSE:To improve heat exchanging efficiency by making two kinds of liquids from countercurrent flow by installing a number of adjacent hollow cores partitioned by walls into which two kinds of fluids flow alternatively and separation passages at both ends of the cores. CONSTITUTION:In the inside of a case 10 which is opened at both ends and has rectangular cross section, a core aggregate 11 with a number of adjacent hollow cores 11a, 11b is accommodated. At both ends of the aggregate 11 adapters 12, 13 equipped with separation passages passing two kinds of fluids in separation are attached respectively and through those adapters 12, 13 one fluid flows in the inside of the case 10 in the arrow direction A1, A4 and the other fluid flows counter currently in the arrow direction B1, B2. Thereby, heat efficiency is improved by making two kinds of fluids passing through the hollow cores from countercurrent flow.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is characterized in that two types of fluids are completely partitioned by a partition wall, flow along both sides of the partition wall, and exchange heat by passing heat in a direction perpendicular to the partition wall. It belongs to direct type (once-through type) heat exchangers, and particularly relates to static type heat exchanger elements.

[Conventional technology]

A conventional heat exchanger element of this type will be explained with reference to FIGS.

FIG. 7 is a perspective view of a so-called cross-flow type plate heat exchanger, in which a corrugated plate l passes fluid in the direction of arrow A A'.
and a large number of corrugated plates 2 through which other fluids pass in the direction of the arrow B and B', which is orthogonal to the direction of A and A', are stacked alternately in a sandwich-like manner through partition walls (partition plates 3). There is.

In this device, both fluids flowing in the directions of arrows A and B' are exchanged with each other through a plate-shaped partition wall while flowing at right angles to each other in the exchanger. It has become.

Figure R is a perspective view of a so-called shell-and-tube heat exchanger, with an inlet and an outlet! A shaft (longitudinal) is inside a cylindrical shell with
A large number of tubes 7 are arranged at regular intervals in the direction, and the fluid flowing in the direction of arrow A AI A2 flows through the tubes 7.
The other fluid flowing in the direction of the arrow BB1B2 enters the inside of the shell B from the inlet ≠, passes through the flow path formed by the outer surface of each tube 7 and the inner surface of the shell B,
It is configured so that it flows out from the outlet j.

In this device, the fluid flowing in the directions of arrows AA and A2 and the fluid flowing in the directions of arrows BB and B2 exchange heat with each other via the wall surface of the tube 7.

[Problem that the invention seeks to solve]

Among the conventional heat exchangers mentioned above, for example, the one shown in Fig. 7 is (1) a so-called cross-flow type plate heat exchanger, but it is difficult to manufacture a counter-flow type heat exchanger. thing. (11) The heat exchange area is determined by the element dimensions, and since the fluids flowing above and below the wall are perpendicular to each other, a large heat exchanger is required to increase the total heat exchange efficiency. There was a problem.

The one shown in Figure 1 is a so-called shell-and-tube heat exchanger, but unless the tube diameter is extremely small, the problem is that the volume becomes large relative to the heat transfer area.

Additionally, in both cases, when the heat exchanger is incorporated into a device, the inlets and outlets for the two types of fluids are not parallel, and the centers of the inlets and outlets cannot be aligned, resulting in a complicated flow path.

The technical object of the present invention is to provide a heat exchanger element that can be miniaturized, has a high total heat exchange efficiency, is easy to incorporate into equipment, and can also be of a counterflow type.

[Failure to solve the problem]

In order to solve the problems and technical problems of the prior art described above, the present invention provides a large number of hollow cores partitioned by partition walls adjacent to each other so that two types of fluids can pass through them alternately. A feature is that separation passages are provided at both ends of each hollow core to separate the two types of fluids passing through each core so that they do not mix.

In addition, in practice, it is desirable that the hollow core has a polygonal cross section.

[Effect]

Since the present invention is configured as described above, during operation (operation), one of the two types of fluid is provided at one end of the hollow core when used in a countercurrent type. A large number of fluid-solid phases of the one fluid introduced through ten thousand separation passages and connected to said separation passages in a plurality of hollow cores provided adjacent to each other in a distributed manner; flows in the core passage toward the other end, and at the other end,
The fluid is discharged without mixing with the other fluid (B) through the discharge separation passage connected to each of the core passages for the above-mentioned fluid (4) so as to merge with it, and is discharged into the external equipment as appropriate. be led to.

Further, the other fluid (B) is introduced through a separation passage for introducing the other fluid provided at the other end of the hollow core,
The one fluid (
4) The other fluid (B) flows toward one end in a large number of hollow cores adjacent to each of the core passages, and is connected to the other fluid (B) to merge with each of the hollow cores at the one end. The fluid is discharged through the flow path without intermingling with one of the fluid diagrams, and is appropriately guided into the external equipment. It should be noted that when used in parallel flow mode, it works in the same manner.

As described above, two types of fluids (A) and (B) flow next to each other in a large number of adjacent hollow cores.

Heat is exchanged efficiently through the partition walls of the hollow core.

〔Example〕 Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a heat exchanger element showing one embodiment of the present invention.

In the figure, the case IO has a rectangular cross section with both ends open.
A core assembly // having a large number of hollow cores //a and //b adjacent to each other as shown in the perspective view of FIG. Adapters 12 and 73 are attached to both ends of the adapters 12 and 73, respectively, which are provided with separation passages for separating and passing two types of fluids as indicated by black and white double arrows. /3, one fluid flows inside the case 10 in the direction of arrows A1A4, and the other fluid flows oppositely in the direction of arrows 81B2.

As shown in FIG. 2, the core assembly/I described above consists of a large number of hollow cores lla and 71b provided adjacent to each other, and each of these hollow cores is made of paper or other material having heat conductivity and moisture resistance. It is composed of bulkheads made of metal such as aluminum, has a hexagonal cross section, as shown in the enlarged diagram in Fig. μ, and is arranged adjacently in a honeycomb pattern. Each hollow core 1 of the second row, and each hollow core 1 of the second row /
/b, two types of fluids face each other as shown in the direction of the black arrow (flowing perpendicular to the page, but is shown facing right for convenience) and in the direction of the white arrow (directing left). Similarly, rows of hollow cores //a and rows of hollow cores //b are arranged alternately.

FIG. 3 is a partially sectional plan view showing the arrangement of the hollow cores arranged as described above, and FIG. The position of a is m (a
) -III (The plan view cut along the bl line, (b) also shows the position of the hollow core //b in the second row at I
I[(b)-III (It is a plan view cut along the bl line.

In the figure, the adapter 12 connected to one end of the core assembly ll is shown at the left end in FIGS. It connects only to a series of hollow cores IIA, IIA... through which 10,000 fluids (the fluid shown by arrows A and A4 is A) flows, and connects only to the other series of hollow cores / / b, / / b...・ does not mix with the other fluid B flowing through (therefore, the first
As shown in the figure, the opening of //b is closed. ) and a series of hollow cores //b through which the other fluid B (the fluid indicated by arrow B1B2 is designated as B) flows.

//b only connects with other series of hollow cores //a
.

//Does not mix with -1 fluid A flowing through a... (
For this purpose, the opening of /1 is closed. ) and a separation passage lλb.

Similarly, the adapter 13 connected to the other end of the core assembly /l is shown at the right end in Figures (a) and (b) and at the rear end in the perspective view of Figure 1, respectively. A series of hollow cores //a, //a through which one fluid flows.

. . . and a series of hollow cores /Ib through which the other fluid B flows, a separation passage /Jb that connects only to the other series of hollow cores /Ib, //b, . . .

Figure 3 is an enlarged cross-sectional view of the Y part in Figure 3(a), that is, the connecting part between the hollow core and the adapter, in which the end of the hollow core lla is separated by the adhesive /j. It is fixed to the passage /λa.

Next, to explain the operation, as shown in FIG. It is introduced as shown by arrow A1, dispersed in a series of hollow cores //a and flows as shown by arrow A2, and the other end (right end in the figure)
and the separation passageway /J of the adapter 13, as shown by arrow A5, and are discharged as shown by arrow A4.

-1, the other fluid B (e.g. exhaust) is introduced from the separation passage /Jb of the adapter 13 at the other end (right end in the figure) of the case IO as shown by arrow B1, as shown in FIG. 3(b). is distributed in a series of hollow cores //b, flowing opposite to the one fluid body, and connected to one end (the leftmost adapter 12 in the figure).
They join together again in the separation passage 12b and are discharged as shown by arrow B2.

The two types of fluid person B exchange heat through the partition walls of the hollow cores arranged adjacent to each other.

According to this embodiment, the following effects are achieved.

Since the two types of fluids A and B flow in opposite directions (countercurrent flow) and can exchange heat through the partition wall of the hollow core,
Heat exchange efficiency is improved.

(11) Since the heat exchanger element is constituted by a hollow core, the thickness of the partition wall due to adhesion does not become large compared to one constituted by a pipe or the like, and therefore the heat exchange efficiency is improved.

(Curved) By arranging adapters with separation passages at both ends of the case, the centers of the flow passages for type A and B can be aligned on the same line at the inlet and outlet of the heat exchanger element. Therefore, in a heat exchanger using this element, the element and the flow path can be easily connected.

Although it is a plate type, it can increase the heat transfer area, so it can be made smaller than a cross-flow type with the same capacity or a shell-and-tube type, as long as the tube diameter is not extremely reduced.

(V) If necessary, latent heat exchange is also possible by making the core material permeable to moisture.

In the embodiment described above, the cross section of the case is rectangular,
Furthermore, although we have described a structure in which the hollow core has a hexagonal cross-section, the cross-sectional shape of the case is not limited to a rectangle, and the cross-section of the hollow core may also be formed into a polygonal shape other than a hexagon.
Of course it is possible.

Moreover, as shown in FIG. 6, a hollow core 21a.

By forming knurls on the circumferential surface of J/b and devising the knurls, it is possible to further increase the heat transfer area.

It is also natural that the heat transfer area can be increased by spraying foamed aluminum or the like onto the partition walls of the hollow core.

Further, in the above-mentioned embodiments, a structure used in a counter-current type was explained, but it is also possible to use in a parallel-current type.

〔Effect of the invention〕

As explained above, according to the present invention, a large number of hollow cores partitioned by partition walls are provided adjacent to each other so that two types of fluids alternately pass therethrough, and each By providing separation passages that separate the two types of fluids passing through the core so that they do not mix together, the following effects are achieved.

(1) Heat exchange efficiency can be improved by making two types of fluids flow in opposite directions through the hollow core.

(11) Since the flow path centers of two different types of fluids can be made the same at the inlet and outlet of the heat exchanger element, the flow path of the equipment incorporating the element can be simplified.

(+1*+ It can be made smaller than a cross-flow plate type with the same capacity or a counter-flow shell-and-tube type unless the tube diameter is made extremely small.

[Brief explanation of the drawing]

FIG. 7 is a perspective view of a heat exchanger element showing one embodiment of the present invention, FIG. 2 is a perspective view of a core assembly, and FIG.
1 is a partial cross-sectional plan view showing the operating state of the fluid at different cross sections inside the case, Figure 5 is an explanatory diagram showing a part of the hollow core in a perspective view, and Figure 5 is the Y section in Figure 3 (a). FIG. 6 is an explanatory view showing another embodiment of the hollow core, and FIGS. 7 and 7 are perspective views showing two different conventional examples. IO...Case, l/...Core aggregate, / / a
, / / b, 2 / a, 2 / b-
hollow core, /2. /J...adapter, /J-a, /2b, /Ja, /
J b - Separation passage Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] In a heat exchanger element in which fluid passages through which one or two types of fluids pass are arranged in parallel, the two types of fluids alternately pass through a large number of hollow cores partitioned by partition walls. The hollow cores are provided adjacent to each other so as to pass through the cores, and separation passages are provided at both ends of each of these hollow cores to separate the two types of fluids passing through each core so that they do not mix. Heat exchanger element. 2. The heat exchanger element according to claim 1, wherein the partition wall is made of paper or the like having heat conductivity and moisture resistance. 3. The heat exchanger element according to claim 1 or 2, wherein the hollow core has a polygonal cross section. 4. The heat exchanger element according to claim 3, wherein knurls are formed on the circumferential surface of the hollow core.