RU2718109C1 - Fastening of gasket to heat exchange plate - Google Patents

Abstract

FIELD: heat exchangers.

SUBSTANCE: present invention relates to latching element of gasket for heat exchanger consisting of stacked plates. Gasket comprises main section configured to be installed in laying groove formed in heat exchange plate and surrounding heat exchange area, wherein the heat exchange plate further comprises a structure of vertices and recesses located in the outer edge area along the outer periphery of the laying groove, and wherein the spacer comprises a latching element configured to be placed in the recess. Besides, the present invention relates to a method of the gasket attachment.

EFFECT: disclosed is latching element of gasket for heat exchanger.

15 cl, 11 dwg

Description

FIELD OF THE INVENTION

In heat exchangers formed from a plurality of stacked heat exchanger plates formed with two pairs of holes and gaskets placed in gasket grooves for sealing the heat exchange region with respect to the external environment and relative to one set of pairs of holes.

If the gasket is not placed correctly, or is generally displaced due to the pressure of the fluids flowing in the flow channels formed between the pairs of stacked heat exchanger plates, a leak can occur.

The objective of the present invention is to disclose the gasket and the method of fastening the gasket, ensuring correct and reliable placement and, in addition, can be used in existing standard heat transfer plates and, thus, do not require modifications that could affect the stability of the heat exchanger, heat transfer plates and gasket placement.

SUMMARY OF THE INVENTION

The mentioned problem is solved by means of solutions, as indicated in the claims.

This includes a gasket comprising a main portion configured to fit into a gasket groove formed in the heat transfer plate that surrounds the heat transfer region, the heat transfer plate further comprising a structure of peaks and recesses located on the outer edge region on the outer periphery a gasket groove, wherein the gasket comprises a snap element configured to be accommodated in a recess. Since most of the heat transfer plates are formed with such a structure of the peaks and recesses on the rib to form a strong connection of the connected respective upper and lower connected adjacent heat transfer plates in the edge region. In the aforementioned embodiment of the present invention, an existing recess is simply used for snapping.

In one embodiment, the latching element is located only in the upper part of said main portion of the gasket, for example, in the upper half, in the upper third or upper quarter.

In one embodiment, the latching element comprises a first portion protruding from said main portion and having a shape or recess on its lower surface adapted to fit onto a protrusion formed in the edge region, and a second portion configured to extend beyond the outer edge area.

In one embodiment, said protrusion is a wall section connecting two of the vertices and further separating the cushion groove from the recess between the two vertices.

Some heat exchanger plates have wall sections that not only give the heat exchanger plate rigidity in the edge region, but also form a continuous outer wall section of the gasket groove, to which the gasket can abut and form a barrier that prevents the gasket from extruding outward. Thus, this embodiment does not require modification, since the first section simply passes through the wall section.

In one embodiment, the latching element comprises a first portion protruding from said main portion and configured with an upper protrusion on its upper surface configured to fit into a protrusion formed in the edge region of the upper connected heat exchange plate, and a second portion configured to extend outside the outer marginal region.

In one embodiment, said second portion comprises a portion extending around and below the end of the heat exchanger plate.

In one embodiment, the end face between two adjacent peaks is closed, while said part further reaches the inner side of the closed end (54) in the inner cavity (55) formed under the peak (51).

In one embodiment, said second section comprises two parts included in the internal cavities of two adjacent vertices of the recess, said first section being located in said recess.

One embodiment relates to a heat exchanger plate formed with such structures that flow channels are formed between each set of adjacent heat exchanger plates defining heat transfer regions and with openings for forming inlets and outlets for fluids leading into the flow channels and a gasket groove, made so that it surrounds said heat-exchange region, said heat-exchange plate further comprising a structure of peaks and recesses located on the outer edge second region on the outer periphery of the spacer grooves which face between two adjacent vertices is closed, wherein said heat exchanging plate adapted to receive gasket according to any one of the preceding embodiments.

In one embodiment of said heat exchange plate, said closed end face is formed by molding material forming a heat exchange plate.

In addition, the present invention relates to a method for attaching a gasket, as indicated in the claims.

This includes a method of attaching the gasket to the heat exchanger plate, said heat exchanger plate comprising a gasket groove formed in the heat exchanger plate that surrounds the heat exchange region, and a structure of vertices and recesses located on the outer edge on the outer periphery of the gasket groove, the method comprising the stage of placing the main section in the cushioning groove,

wherein said gasket comprises a main portion and a latching element, said latching element comprising a first portion protruding from said main portion and a second portion configured to extend outside the outer edge region, said method comprising placing said main portion in said a gasket groove so that said first section coincides with a recess, placing said first section in said recess and, by bristle material of said gasket, said second part of the pulling portion around and under the end of the heat transfer plate.

In one embodiment, a wall section is formed in said edge region connecting two of the vertices, said wall section further separating a cushion groove from a recess between said two vertices, said method comprising the step of placing said first portion above said wall section.

In one embodiment, said end-face is closed between two adjacent vertices, the method further comprising the step of pulling said part under said end-face to place said part on the inner side of the closed end in the inner cavity formed under the top.

Description of drawings

FIG. 1: A side view of a standard heat exchanger formed from stacked heat exchanger plates.

FIG. 2: a top view of three heat transfer plates located on top of each other.

FIG. 3: a plan view showing an embodiment of a latching element according to the present invention attached to an edge region of a heat exchange plate.

FIG. 4: is a depiction of a section of an edge portion of a heat exchanger plate and a gasket with a snap element in accordance with one embodiment of the present invention.

FIG. 5 is a front view of three stacked heat exchanger plates with a snap element extending from the edge portion and connected to the plates in accordance with one embodiment of the present invention.

FIG. 6A, B: cross-sectional side views of three stacked heat exchange plates of FIG. 5 showing the gasket and snap element.

FIG. 7A, B: images of a latch member in accordance with a further embodiment of the present invention.

FIG. 8: cross-sectional side views of three stacked heat exchanger plates with a snap element of FIG. 7A, B.

FIG. 9: latching element in accordance with a further embodiment of the present invention and comprising a plurality of first portions.

The implementation of the invention

It should be understood that a detailed description of the invention and specific examples showing embodiments of the invention are provided for illustrative purposes only, since it will be apparent to those skilled in the art that various changes and modifications are possible within the spirit and scope of the present invention.

FIG. 1 is a side view of a typical plate heat exchanger design (1). The plate heat exchanger (1) comprises a plurality of heat exchange plates (10) stacked one above the other. Inputs and outputs (2, 3) are connected, and a stack of heat exchange plates (10) can be placed between the upper (4) and lower (5) plates.

In FIG. 2 shows heat transfer plates (10) made with such a structure (not shown in any of the drawings) that flow channels are formed between each set of adjacent heat transfer plates (10) defining heat transfer regions (11). The holes (20) and (21) in the heat exchanger plates (10) are formed for connection with the inlets and outlets (2, 3) for the fluids in these flow channels. Gaskets (100) are placed between the heat transfer plates (10) in the gasket grooves (40) formed in the heat transfer plates (10). The gasket (100) is located in the edge of the heat exchange plate (10) for sealing the flow channels and in the area around the holes (20, 21) for sealing pairs of holes so that only two of them (20) have a fluid connection with the flow channel, formed on one side of the heat exchanger plate, and the other two (21) were tight against it.

A gasket (100) is surrounded by a heat exchange region (11), with a hotter fluid passing on one side of the heat exchanger plate in the flow channels (10) and a cooler fluid passing on the opposite side, and these two flowing channels are sealed against each other.

In the outer edge region (50) of the heat exchange plate (10), structures (structure) (51, 52) are formed, such as corrugated structures (corrugated structure) containing a structure of vertices (51) and recesses (52).

In FIG. 3, a gasket section (100) is shown with a main portion (102) located in the gasket groove (40), and a section of the outer edge region (50) of the heat exchange plate (10) is further shown. This drawing illustrates an embodiment of the present invention in which a latch member (101) extends from said main portion (102).

The latching element (101) comprises a first portion (103) protruding from said main portion (102) and located in the recess (52), and a second portion (104) configured to extend beyond the outer edge region (50).

At least in the recess (52), where the first section (103) is located in the outer edge region (50), a protrusion (53) is formed that projects opposite the first section (103), which thus extends from the main section (102) above the protrusion (53) and continues to the second section (104). Thus, in one embodiment, part of the main portion (102) lies on the protrusion (53), and part on the bottom of the recess (52).

In one embodiment, the protrusion (53) is a wall section connecting two of the peaks (51) and further separating the spacer groove (40) from the recess (52) between the two peaks (51). This is the classic design of the heat exchanger plate (10), in which a ridge outer edge region (50) is formed having an inner side representing the outer surface of the gasket groove (40), and preventing the gasket from extruding due to fluid pressure. Thus, this gasket (100) can also be used in such standard heat exchanger plates (10) without any modifications of the said plates or the manufacture of specially designed structures in the outer edge region (50) to place and fasten the snap elements (101).

Also shown is a second portion (104) containing a portion (106) extending around and below the end (12) of the heat exchange plate (10). In the shown embodiment, said second section (104) comprises two parts (106) extending into the internal cavities (55) of two adjacent vertices (51) of the recess (52), said first section (103) being located in said recess (52). In one embodiment, a plurality of such latching elements (101) are arranged at regular intervals along the entire periphery of the gasket (100), thereby securing it from all sides of the heat transfer plate (10).

In the shown embodiment, a second section (104) is seen containing two parts (106) extending into the internal cavities (55) formed under two adjacent vertices (51) of the recess (52), said first section (103) being located in said recess (52).

In FIG. 4 shows essentially the same as in FIG. 3, but in a different view and with the opening of the closed ends (54) between two adjacent peaks (51), the ends (56) between adjacent recesses (52) are still open. In addition, the parts (106) of the gasket are designed so that they are not only placed in the cavities (55), but also extend to the inner wall surface of the closed end (54).

The first section (103) is also shown, on the lower surface of which there is a shape or recess (105) made with the possibility of landing on the protrusion (53) formed in the edge region (50).

In FIG. 5 is a front view of a section of three heat transfer plates (10) stacked one above the other so that the recess (52) of the upper plate (10) is connected to the top (51) of the lower plate, etc. This front view shows the first section (103) of the gasket (100) protruding from the opening of the recess (52) and the second section (104) extending along the ends (12) of the heat exchanger plates (12) and having two parts (106) extending to the rear sides of the closed ends (54) of the vertices (51), and up along their inner surfaces. In one of the embodiments not shown, the second section (104) also has parts extending upward along the outer surfaces of the closed ends (54). In both cases, parts (106) and (104) can be in contact with the surfaces of the closed end (54).

When the recess (52) of the upper plate (10) is connected to the top (51) of the lower plate, access to the internal cavities (55) is provided through the outer holes formed by the lower recess (52). Parts (106) are arranged so that they pass through these holes into the internal cavities (55) of the upper peaks (51).

In addition to the fact that the movement of the parts (106) outward relative to the inner surfaces of the closed ends (54) must be blocked, their movement inward by the outer surface of the closed end (54) of the lower peak (51) attached to the recess (52) can also be blocked ), where the first section (103) is located.

In FIG. 6A and 6B are side views of sections A-A and B-B of FIG. 5. In FIG. 6A, a wall (53) is visible in the middle of the three heat exchange plates (10), forming a barrier between the recess (52) and the gasket groove (40), and a gasket (100) is shown having a snap element (101), the first portion (103) being placed above wall (53) and passes to the bottom of the recess (52), to the second section (104), emerging from the open end (56). In the shown embodiment, the second section (104) is additionally in contact with the outer surface of the closed end (54) of the lower heat exchange plate (10), as also described above.

In the present invention, it is used that when the recesses (52) of the lower heat exchanger plate (10) are connected to the vertices (51) of the lower plate (10), then the vertices (51) of the upper heat exchanger plate (10) are aligned with the recesses (52) of the plates. This means that the protrusions (53) or wall sections always protrude into the open cavity (55) of the upper peak (51), thus leaving access for the first section (103).

In FIG. 6B is a section B-B of FIG. 5, which shows the second section (104) and part (106) extending to the cavity (55) and in contact with the inner surface of the closed end (54).

In FIG. 4 and 6B also show another feature of the embodiment, wherein the latching element (101) is located only in the upper part of said main portion (102) of the gasket (100), for example, in the upper half, in the upper third or upper quarter. Due to this, the lower part of the main section (102) can rest on the outer surfaces (41) of the spacer groove (40), while the upstream first section (103) thus extends above the surface (41), which is also part of the protrusion (53) , and above the protrusion (or wall) (53).

In one embodiment, the closed end (54) is formed by molding material forming a heat transfer plate (10).

In FIG. 7A and 7B illustrate yet another feature of the latch member (101) expressed in the upper protrusion (107) in the first portion (103), which can be applied in any of the previous embodiments. In this case, the upper protrusion (107) will extend to the protrusion formed in the upper connected heat transfer plate (10), which is not shown in the drawing. This contributes not only to fixing the gasket (100), but also to increasing the thickness of the first section (103), which makes it more durable.

Another feature is that the first section (103) does not have a shape or recess (105), but has a flat shape. In one embodiment, the first portion (103) is placed above the protrusion or wall section (53), adjusting to its shape due to its elasticity. This is essentially the same embodiment as that shown in FIG. 3, but without a notch (105).

Thus, in an alternative embodiment in which such a snap element (101) is installed, the heat transfer plate (10) does not have a protrusion or wall section (53), and the corresponding recess (52) in which it is mounted is directly connected to the gasket groove (40).

In FIG. 8 is a side cross-sectional view of three stacked heat exchanger plates with a snap element of FIG. 7A, B.

In FIG. 9 shows another embodiment in which the latching element (101) comprises two (or more) first sections (103) connected by one common second section (104). After installation in the required position, the corresponding two sections (103) shown in this drawing will be placed on each side of the vertex (51). In the shown embodiment, the first sections (103) are formed with recesses (105), but in alternative embodiments, they do not have recesses, or one of the first sections has a recess (105), and the other first section does not have a recess.

In one suitable embodiment, the gasket (100) comprises a combination of snap elements (101) in accordance with various embodiments, and the heat transfer plate (10) is configured accordingly. This, for example, includes the fact that some snap elements are formed as shown in FIG. 3, while one or more other snap elements are configured as in FIG. 7A, 7B and 8.

Claims (15)

1. A gasket (100) comprising a main portion (102) configured to fit in a gasket groove (40) formed in a heat exchange plate (10) that surrounds the heat exchange region (11), the heat exchange plate (10) further comprising a structure from the peaks (51) and recesses (52), located on the outer edge region (50) on the outer periphery of the gasket groove (40), while the gasket (100) contains a snap element (101) made with the possibility of placement in the recess (52) . 2. A gasket (100) according to claim 1, wherein said latching element (101) is located only in the upper part of said main portion (102) of the gasket (100), for example, in the upper half, in the upper third or upper quarter. 3. A gasket (100) according to claim 1 or 2, wherein said latching element (101) comprises a first portion (103) protruding from said main portion (102) and having a shape or recess (105) on its lower surface with the possibility of landing on the protrusion (53) formed in the edge region (50), and the second section (104), made with the possibility of passing outside the outer edge region (50). 4. A gasket (100) according to claim 3, wherein said protrusion (53) is a wall section connecting two of the vertices (51), said wall section (53) further separating the gasket groove (40) from the recess (52) ) between the two vertices mentioned (51). 5. A gasket (100) according to claim 1 or 2, wherein said latching element (101) comprises a first portion (103) protruding from said main portion (102) and having on its upper surface an upper protrusion (107) made with the possibility of landing in the protrusion formed in the edge region (50) of the upper connected heat exchange plate (10), and the second section (104), made with the possibility of passing outside the outer edge region (50). 6. Gasket (100) according to claims 3, 4 or 5, wherein said second portion (104) comprises a portion (106) extending around and below the end face (12) of the heat exchange plate (10). 7. The gasket (100) according to claim 6, in which the end face (12) between two adjacent peaks (51) is closed (54), and part (106) additionally reaches the inner side of the closed end (54) in the inner cavity (55), formed under the peak (51). 8. The gasket (100) according to claim 7, wherein said second section (104) comprises two parts (106) extending into the internal cavities (55) of two adjacent vertices (51) of the recess (52), said first section (103) ) is located in said recess (52). 9. A heat exchanger plate (10) formed with such a structure that between each set of adjacent heat exchanger plates (10) defining the heat exchange regions (11), flow channels are formed and having openings (20) and (21) to form inputs and outputs for fluids leading into the flow channels, and a gasket groove (40) formed by surrounding said heat transfer region (11), said heat transfer plate (10) further comprising a structure of peaks (51) and recesses (52) located on the outer edge areas (50) on the outside the periphery of the gasket groove (40), and the end face (12) between two adjacent vertices (51) is closed (54), while said heat transfer plate (10) is configured to accommodate the gasket (100) according to any one of paragraphs. 1-8. 10. A heat transfer plate (10) according to claim 9, wherein said closed end (54) is formed by molding material forming a heat transfer plate (10). 11. A heat exchanger (1) having a gasket (100) according to any one of paragraphs. 1-8 and / or formed from heat transfer plates (10) according to claim 9. 12. A method of attaching a gasket (100) to a heat transfer plate (10), said heat transfer plate (10) comprising a gasket groove (40) formed in a heat transfer plate (10) that surrounds the heat transfer region (11) and a structure of vertices ( 51) and recesses (52) located in the outer edge region (50) along the outer periphery of the gasket groove (40), the method comprising the step of placing the main portion (102) in the gasket groove (40), said gasket (100) comprising a main a portion (102) and a snap element (101), wherein said latching element (101) comprises a first portion (103) protruding from said main portion (102), and a second portion (104) configured to extend outside the outer edge region (50), said method including arranging said the main section (102) in said gasket groove (40) so that said first section (103) coincides with a recess (52), placing said first section (103) in said recess (52) and, due to the elasticity of the material of said gasket, stretching cha five (106) of said second portion (104) around the end and under (12) the heat transfer plate (10). 13. The method according to p. 12, wherein a wall section (53) is formed in said boundary region (50), connecting two of the peaks (51) and further separating the spacer groove (40) from the recess (52) between the two peaks (51) wherein said method includes the step of placing said first portion (103) above said wall section (53). 14. A method according to claim 12 or 13, wherein said end face (12) between two adjacent peaks (51) is closed (54), the method further comprising the step of pulling part (106) under said end face (12) to place said part ( 106) from the inside of the closed end (54) in the inner cavity (55) formed under the apex (51). 15. The method according to any one of paragraphs. 12-14 used with the gasket according to any one of paragraphs. 1-8 and / or heat transfer plate according to any one of paragraphs. 9, 10.

Images