FR2480927A1 - PLATE ASSEMBLY WITH CHANNEL FOR PASSING A FLUID - Google Patents

Abstract

THE INVENTION CONCERNS THERMAL EXCHANGE TECHNIQUES. THE SET OF PLATES WHICH ARE THE SUBJECT OF THE INVENTION IS OF THE TYPE CONSTITUTED BY PLATES 1 PROVIDED WITH AN ORIFICE 2 FOR THE PASSAGE OF THE FLUID AND BY ELASTIC SEALING ELEMENTS 3 FIXED TO THE SAID PLATES AND DELIMING CHANNEL 4 OF PASSAGE OF THE FLUID, AND IS CHARACTERIZED IN THAT IT IS PROVIDED WITH PROJECTING ELEMENTS 5 OF CORRESPONDING HOLES FOR FIXING TO THE SAID PLATES OF THE SAID ELASTIC SEALING ELEMENTS, THE SAID FIXING ELEMENTS ENGAGED WITH TIGHTENING IN THE SAID HOLES. THE INVENTION APPLIES IN PARTICULAR TO FILTERS AND HEAT EXCHANGERS.

Description

The present invention relates to constructions realized in form

  of sets, stacks or "packets" of plates and particularly relates to a pack of plates

  with a channel for the passage of a fluid.

  The invention is applicable in particular to filters and heat exchangers of liquid and gaseous media in many fields of the art such as the chemical, energy, metallurgical, food, etc. industries. The invention is especially interesting to use in cases where it is necessary to have a great

  surface of the surfaco in contact with a fluid.

  The invention can be used with the most

  success in removable heat exchangers A plates.

  Plate packets are widely known

channel for fluids.

  The main elements constituting the known packs of plates are plates provided with fluid orifices and elastic sealing elements.

housed in grooves.

  The plates are assembled in packs so as to leave, between the plates, channels for the passage of fluids, these channels being delimited by elements

Elastic sealing.

  The package is installed on a frame between

  trays and is then tightened by means of tensioning bolts.

  To fix the elastic sealing elements to the plates,

  either glues or appropriate devices are used.

  The most common mode of attachment currently is collage. However, the use of glues limits the field of application of such packs of plates due to their insufficient resistance to high temperatures and

presence of corrosive media.

  In addition, the bonding operation of elastic sealing elements is complicated and requires the use

toxic substances.

  By employing glueless fixing processes, deeper grooves with a more complicated profile must be made in the plates or welded with flanges to obtain a groove in the form of a "dovetail" in order to avoid that the seals do not escape (see UK Patent No. 523228). The present invention aims to develop a set or pack of plates with a channel for the passage of a fluid, the construction of elastic sealing elements and plates would exclude additional operations during manufacture and

  to increase the reliability of the seal at the same time.

  This problem is solved in that the set of

  plates with a channel for the passage of a fluid, comprising

  both plates having orifices for the passage of a

  fluid and elastic sealing elements attached to

  said plates and delimiting said channel, is characterized according to the invention, in that it is provided with fastening elements for joining to the plates said elastic sealing elements, and corresponding holes, said fastening elements engaging with tightening in

said holes.

  Such a design mode of the plate package makes it less complicated to manufacture compared to known models. It also becomes easier to disassemble the package when worn sealing elements have to be replaced or the surface of the plates cleaned. The simplest is to realize the elements of

  fixing in the form of protrusions on the elastic elements.

  The plates in this case have corresponding holes

  wherein said projections engage with clamping.

  The most rational is to give the projections elastic elements and corresponding holes of the plates a

cylindrical shape.

  In order to improve the fixing of the elastic sealing elements and to simplify their manufacture, it is advantageous to make the fastening elements in the form of protrusions which can be made in a manner that is easy to use.

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  the shape of a cylindrical protrusion on the element of

  elasticity, in the disassembled state; FIG. 4 represents, in section, an example of

  realization of the plate (fragment), the element of

  elasticity and the fastening element having the shape of a cylindrical projection with an end bead on the resilient sealing element, in the disassembled state;

  - Figure 5 shows, in section, an example of.

  producing the plate (fragment), the elastic sealing element and the V'atache element in the form of a cylindrical or longitudinal projection on the spike, in the disassembled state; - Figure 6 shows, in section, an embodiment of the fastener having the appearance of a cylindrical or longitudinal projection on the plate and provided with an end bead; - Figure 7 is a sectional view of an embodiment of the fastener having the shape of a tongue cut and raised on the plate; FIG. 8 is a sectional view of another embodiment of the fastening element having the shape of a tongue cut out and raised on the plate and engaged in the corresponding orifice made in the sealing element; elastic; - Figure 9 shows, in section, an embodiment of the fixing element stamped in one piece with the plate;

  - Figure 10 illustrates another example of

  the fastening element is stamped in one piece with the plate; Figure 11 shows, in section, an example of

  realization of the plate (fragment), the element of

  elasticity and fastening element in the form of a stud or key having a sharp-edged bead on the periphery; Figure 12 is a sectional view of another embodiment of the fastener having the appearance of a stud or an oleager with a blind hole; FIG. 13 shows, in cross-section, an exemplary embodiment of the plate (fragment), of the elastic sealing element and of the fastening element provided with beads on its two sides, in the disassembled state; FIG. 14 shows, in cross-section, another embodiment of the fastening unit muEi of claws over its entire height with sharp edges; - Figure 15 shows, in Ooupu, n other embodiment of the plate (fran) provided with a longitudinal fastening element with a ternal seal and the elastic sealing element (fragmenat) with a corresponding hole, & the state disassembled; FIG. 16 is an overall view of an assembled pack of plates disposed between clamping trays.

  and tightened with tensioning bolts.

  The assembly, stack or "pack" of plates with a channel for the passage of a fluid comprises (FIG. 1) plates I with orifices 2 for the passage of the fluid, elastic sealing elements 3 delimiting a channel 4 for the passage of a fluid9 and fastening elements 5 for joining to the plates 1 the resilient sealing elements 3. Said fastening elements 5 engage, with clamping, in corresponding holes 6 which can be practiced as well in the plate (Figures 3, 4, 11, 13) than in the sealing element

  elastic 3 (Figures 5, 8, 11, 13, 15).

  FIG. 2 shows, in cross-section, a fragment of the plate 1 supporting the elastic sealing element 3 which is fixed thereto by means of the fixing element 5 which can

  be performed as described below.

  FIG. 3 shows an exemplary embodiment of the plate 1 (fragment), the elastic sealing element 3 and the fastening element 5 made in the form of a cylindrical projection on the elastic sealing element 3 This is the simplest mode of realization of the element

of fixation.

  FIG. 4 represents an exemplary embodiment of the plate 1 (fragment), of the elastic sealing element 3 and of the fastening element 5 made in the form of a cylindrical projection on the sealing element

  elastic 3 and having an end bead, in the disassembled state.

  This embodiment makes it possible to increase the strength of the attachment of the elastic sealing element to the

plate 1.

  FIG. 5 represents, in section, an embodiment of the plate 1 (fragment), of the elastic sealing element 3 and of the fastening element 5 having the shape of a cylindrical or longitudinal projection on the plate 1, in the disassembled state. This embodiment makes it possible to increase the stability of the sealing element

elastic 3 during work.

  Figure 6 shows, in section, an embodiment of the fastening element 5 having the appearance of a cylindrical projection or longitudinal, on the plate 1 and provided with an end bead. This embodiment makes it possible to increase the strength and the reliability of the fixing of the elastic sealing element 3 to the

plate 1.

  FIG. 7 shows, in section, an exemplary embodiment of the fastening element 5 having the appearance of a

  tab cut in each of the plates 1 and raised.

  This embodiment, besides ensuring a fixation

  stronger and safer elastic sealing elements

  3 to plate 1 simplifies manufacturing

fasteners 5.

  FIG. 8 shows, in section, another embodiment of the fastening element 5 having the shape of a tongue cut in the plate 1 and raised so as to engage in a corresponding hole in the element of FIG. 3. This variant ensures, with respect to that of FIG. 7, a greater solidity of the

  fixing the elastic sealing element 3 to the plate 1.

  FIG. 9 shows, in section, an exemplary embodiment of the fastening element 5 stamped in one piece with the plate 1. This embodiment is distinguished by technological facilities for the manufacture of

  plates with fasteners 5.

  FIG. 10 represents, in section, another embodiment of the fixing element 5 stamped with a

  single piece with the plate 1 and provided with an end bead.

  This embodiment increases the strength of the fastening

  of the elastic sealing element of the plate 1.

  Figure 11 shows, in section, an example of how

  the plate (fragment), the elastic sealing element 3 and the fication element 5 having the appearance of a stud or a key with an end bead and a sharp edge periphery. This embodiment is characterized by a high strength and the secure fastening of the elastic sealing elements 3 to the plates 1. The assembly technology of the plate pack 1 becomes simpler. On the other hand, the fasteners 5

  in the form of dowels or keys can be made

  stamping of non-metallic materials, for example polymer, which increases their reliability, their service life and makes it less expensive to manufacture, or even

packs of plates.

  FIG. 12 shows another embodiment of the fastening element 5, having the appearance of a stud or a key with a blind hole 7 on the side by which it is placed on the plate 1. This mode embodiment makes it possible to increase the fastening strength of these studs or

  keys to plate 1 by chucking the holes 7.

  FIG. 13 shows, in section, an exemplary embodiment of the plate 1 (fragment), the elastic sealing element 3 and the fixing element 5

  having beads on both sides, in disassembled state.

  It is interesting that the orifice 6 of the plate 1 is narrower than the upper bead of the fastening element 5. This makes it easy to disassemble the pack of plates. This embodiment is characterized by the

  easy assembly and disassembly of the plate pack.

  Figure 14 shows, in section, another embodiment of the fastening element 5 provided, over its entire height, claws with sharp edges at the periphery. This embodiment is characterized by strength and safety

  particularly high levels of fastening of

  elasticity 3 to the plates 1.

  FIG. 15 represents, in section, an embodiment of the plate 1 (fragment) with a longitudinal fastening element with lateral projection and the element

  elastic seal 3 (fragment) with the corre-

  6, in the disassembled state. This embodiment is distinguished by a high strength and secure fastening

  elastic sealing elements 3 to the plates 1.

  FIG. 16 is an overall view of the assembled pack of plates installed between clamping plates 8 and tightened with tensioning bolts 9. On the platforms 8, an inlet pipe 10 and an outlet pipe 11 are seen. pack of plates can serve as exchanger

heat.

  The plate pack with channel for fluids

  used in a heat exchanger works as follows.

  Plates 1 are assembled in one package and the latter is placed between clamping plates 8 to clamp to

  using tensioning bolts 9 (Figure 16), the caloric fluid

  carrier arriving through the inlet pipe 10 passes through the orifices 2 (Figure 4) to the channels 4 and out through the outlet pipe 11. By passing through the channels 4 the heat transfer fluid gives up its heat to

plates 1.

  The fluid channel plate pack which is the subject of the present invention is, from a design point of view, simpler than the known models or the element

  elastic sealing is attached to the plate without glue.

  We therefore benefit from a greater technological ease of manufacture of the package, the latter becoming also easier to disassemble to change the sealing elements

  worn elastics and to clean the surface of the plates.

  The device which has been described here is characterized by a good service life and the fastening strenght of the element

  elastic sealing to the plate.

  Of course, the invention is not limited to the embodiments described and shown which have been given by way of example. In particular, it includes all the means constituting technical equivalents of the means described as well as leours combinations if they are executed according to its spirit and put

  implemented in the context of protection as claimed.

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  9. The set of plates according to claim 8, characterized in that said tongues are cut out.

  and raised on each of the plates.

  10. Set of plates according to claim 1, characterized in that the fastening elements are in

form of studs.

  Il.- Set of plates according to claim 1, -

  characterized in that the fastening elements are in

key shape.

  12. Set of plates according to one of the claims

  10 and 11, characterized in that the elements of

fasteners have a blind hole.

  13.- set of plates according to one of the claims

  1 to 12, characterized in that the fastening elements

have an end rim.

  14. A set of plates according to claim 13, characterized in that said beads have a ridge

vivid device.

  15.- set of plates according to one of the claims-

  1 and 4 to 12, characterized in that the lateral surfaces of the fastening elements are provided with claws

over their entire height.

  16.- set of plates according to claim 15, characterized in that said claws have edges

vivid peripherals.