JPH0141037Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a plate-type heat exchanger, and more specifically, to a structure for fixing ribs on a heat exchange plate in a floating plate-type heat exchanger. This is related to.

BACKGROUND ART A typical example of a floating plate heat exchanger in which a heat exchange plate is elastically supported by a support member is disclosed in Japanese Patent Publication No. 59-500580. One of the floating plate heat exchangers disclosed in the published patent publication is shown in FIG. FIG. 3 is a partially omitted perspective view of one unit of the floating plate heat exchanger. The illustrated floating plate heat exchanger includes a pair of rectangular end walls 10 and corner members 11 having ends attached to each of four corners of the rectangular end walls 10 to connect the rectangular end walls. Equipped with:

A plurality of rectangular plates 12 constituting a heat exchange plate are arranged in parallel between the rectangular end walls 10. One side of the rectangular plates is provided with a plurality of ribs 13 forming fluid channels between each pair of adjacent rectangular plates. The ribs extend parallel to each other from one side of the rectangular plate 12 to the opposite side. and,
The rectangular plates 12 are arranged such that the ribs between adjacent rectangular plates are orthogonal to each other, as shown in FIG. 3, so that the fluid channels formed on both sides of each rectangular plate are orthogonal to each other. With this alternating orthogonal arrangement, the ribs act to maintain the spacing between the plates when subjected to extreme temperatures or pressures, and the criss-crossing ribs work with the plates to maintain the spacing between the plates. The plates form a vertically extending structural support column that serves to support the plates against distortion or general movement.

Furthermore, the corner member 11 has a rectangular plate 12
An elastic material is provided between the corners of the rectangular plate to absorb thermal expansion in the same plane as the plane of the rectangular plate.

In the floating plate heat exchanger as described above, for example, high-temperature fluid is passed through all the channels in the same direction among the mutually orthogonal channels formed between the rectangular plates 12, and all the channels in the direction perpendicular thereto are made to flow, for example. By flowing the low temperature fluid, heat exchange is performed between both fluids through the rectangular plate.

Problems to be Solved by the Invention Conventionally, in the floating plate heat exchanger as described above, the following method has been used to fix the ribs in a predetermined position.

That is, in a floating plate heat exchanger of the embodiment shown in FIGS. 4 and 5, each rectangular plate has outwardly bent flanges 1 at its two opposite ends.
4 and with upper bends 15 at the other two opposite ends, such rectangular plates are stacked rotated by 90° with respect to the lower plate,
It constitutes a heat exchanger. A spring plate 20 and a spring spacer 21 are provided on the outwardly bent flange 14, and the spring spacer 21 is formed from connected generally U-shaped channels 22 and 23, and further includes a top portion of the channel 23. A slot 24 is formed therein.

The ribs 13 spaced at regular intervals across each plate include downwardly directed tabs 25 adjacent the ends of the ribs which are received in slots 24 of the spring spacer 21 to secure the ribs.

However, as shown in FIG. 3, the lower end of the heat exchanger is constituted by a rectangular end wall 10 and no spring spacer is present. Therefore, a device for fixing the lowermost rib is required.

On the other hand, it is conceivable to provide slots in the lower end wall that match the spacing between the ribs, and then drop the tabs of the ribs into the slots to fix them. The slots communicate between the inside and outside of the heat exchanger, resulting in a significant drop in thermal efficiency, and if the fluid is a toxic gas or the like, it is inconvenient that the gas leaks to the outside.

On the other hand, in order to achieve sealing when the tab of the rib is dropped into the slot, high precision is required in the machining of the slot, and assembly becomes troublesome.

SUMMARY OF THE INVENTION An object of the present invention is to provide a floating plate heat exchanger in which the rib at the lowermost end can be easily locked while the heat exchanger is sufficiently sealed.

Means for Solving the Problems According to the present invention, a pair of rectangular end walls, a corner member attached to each corner of the rectangular end walls to connect the rectangular end walls, and a pair of rectangular end walls are provided. a plurality of rectangular plates arranged parallel to each other and elastically supported between the section walls, the corners of which are elastically retained by the corner members; The rectangular plate has at least ribs arranged in the same direction, and fluid is flowed in directions orthogonal to each other on both sides of each rectangular plate, and heat exchange is performed between the cross-flow fluid flows through the rectangular plate. In the floating plate heat exchanger, a rib locking plate for fixing the ribs is disposed between the lower rectangular end wall and the plate adjacent to the end wall.

The second preferred embodiment of the rib block board is
A plate or frame may be mentioned which has slots on two opposite sides corresponding to the spacing of the ribs.

Function In the floating plate heat exchanger configured as described above, the rib block plate provided between the lower end wall and the adjacent rectangular plate (heat exchange plate) is provided on the rib block plate. The bottom rib is fixed by dropping the tab of the bottom rib into the slot provided, and these ribs form a channel for the fluid at the bottom, and also provide a structure against forces in the direction perpendicular to the rectangular plate surface. form a support.

On the other hand, since there is a rectangular end wall under the rib block plate, the slot of the rib block plate is sealed by the rectangular end wall, and a sufficient seal can be achieved.

In addition, the rib block plate is formed with the same dimensions as the rectangular plate, and the rib block plate is compressed together with the rectangular plate (heat exchange plate) on the rib block plate, and is sandwiched between the upper and lower end walls, and is fixed with bolts, etc. A tool secures the end wall and corner member. As a result, the rib lock plate and the rectangular plate are held elastically. In such a floating plate heat exchanger, spring plates placed between the plates are used to prevent thermal expansion during operation of the device, and to prevent expansion in a plane perpendicular to the plane of the rectangular plates. Thermal expansion in the same direction as is absorbed by corner members containing elastic material.

In this way, the plate heat exchanger of the present invention can fix the lowermost rib and still provide a sufficient seal.

Embodiments Hereinafter, a floating plate heat exchanger according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a conceptual vertical sectional view of the inside of a floating plate heat exchanger according to the present invention. The same parts as those of the floating plate heat exchanger in Fig. 3 are given the same reference numbers, and the parts other than those shown in Fig. 1 are those disclosed in the above-mentioned published patent gazette. It is similar to

Referring to FIG. 1, the floating plate heat exchanger according to the present invention has a ribbed plate 3 between a lower end wall 10 and an adjacent rectangular plate 12.
0 is placed.

Further, FIG. 2a shows a rib block plate used in the floating plate type heat exchanger of the present invention. The rib lock plate 30 is formed of a metal plate, and slots 31 are provided on opposite sides of the plate to match the spacing between the ribs.
By dropping the tab of the rib into the slot 31, the lowermost rib is fixed.

The rib block plate 30 can be formed not only from any metal but also from alloys, ceramics, and the like. Furthermore, the size of the rib block plate needs to be the same as the plane of the rectangular plate, and the thickness needs to be slightly larger than the height of the tab of the rib, so the thickness needs to be about 1 to 5 mm.

The rib block plate 30 is not limited to a planar plate as shown in FIG. 2a, but may be in the form of a frame consisting only of the peripheral portion where the slot 31 is formed, as shown in FIG. 2b. Because the central part is
Since it does not contribute to the locking or sealing of the rib, it is an unnecessary part.

Effects of the Invention As explained above, in the floating plate heat exchanger according to the present invention, the ribs can be fixed while maintaining a sufficient seal.

[Brief explanation of the drawing]

FIG. 1 is a conceptual vertical sectional view of a floating plate heat exchanger according to the present invention, and FIGS. 2a and 2b are schematic diagrams showing the shape of ribbed plates used in the heat exchanger according to the present invention. FIG. 3 is a partially omitted perspective view of a conventional floating plate heat exchanger, and FIG. 4 is an exploded schematic perspective view of a plate stack used in the floating plate heat exchanger. and FIG. 5 is a cutaway perspective view of the plate stack of FIG. 4. Main reference number, 10... Rectangular end wall, 11...
Corner member, 12... Rectangular plate, 13...
Rib, 14...Outward bending flange, 15...Upper bending portion, 20...Spring plate, 21...Spring spacer, 22...Channel, 23...
Channel, 24...Slot, 25...Tab,
30...Reblock board, 31...Slot.

Claims (1)

[Claims for Utility Model Registration] (1) Between a pair of rectangular end walls, a corner member attached to each corner of the rectangular end walls for connecting the rectangular end walls, and the rectangular end wall. a plurality of rectangular plates arranged parallel to each other and elastically supported and having corners elastically retained by the corner members; The rectangular plate is provided with at least ribs, and a fluid is allowed to flow in directions orthogonal to each other on both sides of each rectangular plate.
In a floating plate heat exchanger in which heat exchange is performed between the cross-flow fluid flows through the rectangular plates, the ribs are provided between the lower rectangular end wall and the plate adjacent to the end wall. A floating plate heat exchanger characterized by a ribbed plate for fixing the heat exchanger. (2) The utility model as set forth in claim 1, wherein the rib lock plate is a plate or frame having slots on two opposing sides thereof that match the spacing between the ribs. Floating plate heat exchanger.