阅读说明：本技术 热交换器板 (Heat exchanger plate ) 是由 伊凡·克努森 赫尔吉·尼耳森 于 2020-09-14 设计创作，主要内容包括：描述了一种热交换器板(1),包括边缘(2)、凹槽(3)和波纹状区域(4),所述凹槽(3)沿所述边缘(2)延伸,所述波纹状区域(4)具有位于所述凹槽(3)与所述边缘(2)之间的顶部(5)和谷部(6),其中所述顶部(5)大体垂直于所述边缘(2)延伸,所述凹槽(3)包括内壁(8)和邻近于所述波纹状区域(4)的外壁(7)。通过使用这样的这样的热交换器板(1),将可能生产具有简单构造的可靠的板式热交换器。为此,所述外壁(7)呈波浪形状的形式。(A heat exchanger plate (1) is described, comprising an edge (2), a groove (3) and a corrugated region (4), the groove (3) extending along the edge (2), the corrugated region (4) having crests (5) and troughs (6) between the groove (3) and the edge (2), wherein the crests (5) extend substantially perpendicular to the edge (2), the groove (3) comprising an inner wall (8) and an outer wall (7) adjacent to the corrugated region (4). By using such a heat exchanger plate (1), it will be possible to produce a reliable plate heat exchanger with a simple construction. For this purpose, the outer wall (7) is in the form of a wave shape.)

1. A heat exchanger plate (1) comprising an edge (2), a groove (3) and a corrugated region (4), the groove (3) extending along the edge (2), the corrugated region (4) having crests (5) and troughs (6) between the groove (3) and the edge (2), wherein the crests (5) extend substantially perpendicular to the edge (2), the groove (3) comprising an outer wall (7) and an inner wall (8) adjacent to the corrugated region (4),

characterized in that the outer wall (7) is in the form of a wave shape.

2. A heat exchanger plate according to claim 1, characterised in that the wave shape comprises crests (9) and troughs (10), wherein the crests (9) are closer to the edge (2) than the troughs (10), and wherein the number of crests (9) corresponds to the number of crests (5), at least in the middle section of the edge (2).

3. A heat exchanger plate according to claim 2, characterised in that the crest portions (9) are arranged in the area of the crests (5).

4. A heat exchanger plate according to claim 3, characterised in that the crest portions (9) extend at least to the inner border (11) of the corrugated area (4).

5. A heat exchanger plate according to claim 1 or 4, wherein the groove (3) comprises a varying width.

6. A heat exchanger plate according to any one of claims 1 to 5, characterised in that the inner wall (7) is straight at least over a part of the length of the inner wall (7).

7. A heat exchanger plate according to any one of claims 1 to 6, characterised in that the inner wall (7) is not straight at least over a part of the length of the inner wall (7).

8. A heat exchanger plate according to any one of claims 1-7, characterised in that the crests (9) and troughs (10) are rounded.

9. A heat exchanger plate according to claim 8, characterised in that the crests (9) and troughs (10) are in the form of a sine wave.

10. A heat exchanger plate according to claim 8, characterised in that the crests (9) and troughs (10) are square.

Technical Field

The invention relates to a heat exchanger plate comprising a rim, a groove extending along the rim, and a corrugated region having crests and troughs between the groove and the rim, wherein the crests extend substantially perpendicular to the rim, the groove comprising an inner wall and an outer wall adjacent to the corrugated region.

Background

Such a heat exchanger plate is known, for example, from EP2361365B 1.

The invention is particularly intended for high-pressure heat exchangers having a stack of such heat exchanger plates, wherein a gasket is arranged between two adjacent plates. The corrugated region along the edge forms a contact point to the adjacent plates of the stack.

However, this configuration has the risk of gaps being formed into the cavity formed within the outer wall of the groove. At high pressures, the gasket received in the groove tends to be pushed towards this chamber, thus causing the heat exchanger to leak.

Disclosure of Invention

A basic object of the present invention is to provide a reliable plate heat exchanger with a simple construction.

This object is solved by a heat exchanger plate as initially described, wherein the outer wall is in the form of a wave shape.

The wavy shape of the outer wall changes the size of the gap or, in a preferred embodiment, makes the gap so small that the gasket cannot be pressed out of the groove. Thus, the risk of leakage of the heat exchanger formed by such heat exchanger plates is significantly reduced.

In an embodiment of the invention, the wave shape comprises wave crests and wave troughs, wherein the wave crests are closer to the edge than the wave troughs, and wherein at least in a middle section of the edge the number of wave crests corresponds to the number of crests. Thus, the size of the gap at each top can be reduced.

In an embodiment of the invention, said crest portions are arranged in the region of said top portion. Thus, the gap is accurately reduced at a desired position.

In an embodiment of the invention, the crest portions extend at least to the inner boundary of the corrugated region. In particular, the crest portions may extend beyond the inner boundary of the corrugated region. Thus, the gap can be completely closed.

In an embodiment of the invention, the groove comprises a varying width. This varying width is due to the fact that: the outer wall is in the form of a wave shape and the inner wall does not follow the same shape.

In an embodiment of the invention, the inner wall is straight over at least a part of its length. This simplifies the production of the heat exchanger plate.

In additional or alternative embodiments of the invention, the inner wall is not straight, at least over a portion of its length. However, it is possible to combine straight and non-straight portions of the inner wall. The particular form of the inner wall depends on the gasket used.

In an embodiment of the invention, the wave crests and troughs are rounded. Thus, there are no sharp edges that could damage the gasket.

In an embodiment of the invention, the wave crests and troughs are in the form of sine waves. The sine wave is in the form of a harmonic that maintains low stress on the pad.

In another embodiment of the invention, the crest and trough portions are square. This simplifies the production of the heat exchanger plate.

Drawings

Embodiments of the invention will now be described in more detail with reference to the accompanying drawings, in which:

figure 1 shows a perspective view of an edge section of a heat exchanger plate,

figure 2 shows a top view of the edge section of the heat exchanger plate according to figure 1,

figure 3 shows a perspective view of the edge sections of two heat exchanger plates during assembly,

fig. 4 schematically illustrates the relationship between the corrugated area at the edge and the wave shape of the outer wall.

FIG. 5 schematically shows a view of the second embodiment according to FIG. 4, an

Fig. 6 schematically shows the third embodiment in the view according to fig. 4.

Like elements are denoted by like reference numerals throughout the figures.

Detailed Description

Fig. 1 shows in perspective an edge section of a heat exchanger plate 1, said heat exchanger plate 1 comprising an edge 2, grooves 3, and a corrugated area 4, said grooves 3 extending parallel to said edge 2, said corrugated area 4 having crests 5 and troughs 6 between said grooves 3 and said edge 2.

The top 5 extends substantially perpendicular to the edge 2. The groove 3 comprises an outer wall 7 adjacent to the corrugated region 4 and an inner wall 8 on the opposite side of the outer wall 7.

Said outer wall 7 is in the form of a wave shape, i.e. it is wavy. The outer wall 7 comprises crest 9 and trough 10 portions. The crest portions 9 are closer to the edge 2 than the trough portions 10.

At least in the middle section of the edge 2, the number of wave crests 9 corresponds to the number of crests 5.

The crest portions 9 are arranged in the region of said top portion 5. In a preferred embodiment, the point of the crest portion 9 closest to the edge 2 corresponds to the middle of the top 5 (in a direction parallel to the edge 2).

The crest portions 9 extend as close as possible to the top 5. In the embodiment shown, there is a small spacing a between the inner boundary 11 of the corrugated region 4 and the crest 9 of the inner wall 7. However, the crest portions 9 may extend at least to the inner boundary 11 of the corrugated region 4.

Due to the wavy shape of the outer boundary 7, the width of the groove 3 varies. In other words, the spacing between the outer wall 7 and the inner wall 8 varies.

In the embodiment shown, the inner wall 8 is straight. However, it is possible to use an inner wall 8 that is straight or not straight over only a part of the length of the inner wall 8. Furthermore, it is possible to combine a straight section of the inner wall 8 and a section of the inner wall that is not straight.

The crests 9 and troughs 10 are rounded. The outer wall 7 may be designed in the form of a sine wave or as a series of squares or rectangles.

Fig. 2 additionally shows a heat exchange area 12 of said heat exchanger plate 1 with a fishbone pattern 13.

Fig. 3 schematically shows how two heat exchanger plates 1a, 1b are mounted to each other. Said valleys 6a of the upper heat exchanger plate 1a are mounted to said crests 5b of the lower heat exchanger plate 1 b.

Fig. 4 schematically shows the interrelationship of the crest and crest portions of an assembly of two heat exchanger plates 1a, 1 b. Portions of the upper heat exchanger plate 1a are shown with dashed lines and corresponding portions of the lower heat exchanger plate 1b are shown with solid lines.

It can be seen that the crest portion 9b of the outer wall 7b of the lower heat exchanger plate 1b extends to the top portion 5b of the lower heat exchanger plate 1b, while the crest portion 9a of the outer wall 7a of the upper heat exchanger plate 1a extends to the top portion 5a of the upper heat exchanger plate 1 a.

The above-mentioned distance a is chosen so small that a gasket arranged in the groove 3 cannot be pressed through the gap. The smaller the distance a, the smaller the gap and the smaller the risk of leakage.

Fig. 5a shows the correlation of the crest and crest portions of an assembly of two heat exchanger plates 1a, 1b of the second embodiment. Portions of the upper heat exchanger plate 1a are shown with dashed lines and corresponding portions of the lower heat exchanger plate 1b are shown with solid lines.

The undulating shape of the outer wall 7 is square or approximately square, rather than sinusoidal, as shown in figure 4.

Fig. 5B shows a cross-sectional view taken along lines a-a and B-B of fig. 5 a. It can be seen that in section a-a the gap has disappeared.

Fig. 6 schematically shows the interrelationship of crest portions and tops of an assembly of two heat exchanger plates 1a, 1b of a third embodiment.

Fig. 6a shows a top view and fig. 6B shows a cross-sectional view along the lines a-a and B-B of fig. 6 a.

The shape of the boundary lines 7a, 7b is illustrated as square, but may also have a sinusoidal shape or any other curved form. The shape may be displaced.

It can be seen that said gap 14 between the two plates 1a, 1b has almost disappeared and is so small that there is no risk that the gasket will be pressed through. In this embodiment the two borderlines 7a, 7b are at least almost identical. In other words, these boundary lines are displaced with respect to each other when compared to the embodiments of fig. 4 and 5.