CN215063985U - Adapter plate with eccentric embossments and plate heat exchanger comprising same - Google Patents

Abstract

The utility model relates to an adapter plate with eccentric relief and plate heat exchanger including it, the adapter plate is used for using in plate heat exchanger, wherein, plate heat exchanger still includes frame plate and a plurality of heat exchanger plates, a plurality of heat exchanger plates set up adjacent each other and combine with the frame plate to form the group of plates, the frame plate sets up the outside at plate heat exchanger's the outside heat exchanger plate in the outside, and the adapter plate sets up the outside at the frame plate, wherein, heat exchanger plate and frame plate have a plurality of port holes, the port hole forms the port that extends through the group of plates, wherein, the adapter plate includes protruding and the eccentric relief that sets up on protruding, protruding corresponds with the port of group of plates, and the relief is fixed a position for the port is eccentric, thereby produce more spaces in the bight region of adapter plate in order to protect around the port towards the regional bonding surface of side.

Description

Adapter plate with eccentric embossments and plate heat exchanger comprising same

Technical Field

The utility model relates to an adapter plate that is used for plate heat exchanger to have eccentric relief and plate heat exchanger including this adapter plate.

Background

A plate heat exchanger usually comprises a frame plate and a plurality of heat exchanger plates, which are arranged adjacent to each other and which, in combination with the frame plate, form a plate package. The frame plate is arranged outside the outermost heat exchanger plate of the plate heat exchanger, the heat exchanger plate and the frame plate having a plurality of port holes forming ports extending through the plate package. The heat exchanger plates in such plate heat exchangers are usually permanently joined to each other by brazing or gluing.

In many applications for permanently joined (e.g. brazed) plate heat exchangers, high strength is required in order to cope with the high working pressure of the medium being conveyed through the plate heat exchanger. To accommodate higher strength requirements, well established techniques use thicker frame panels, reinforcement panels, and/or adapter panels.

A plate heat exchanger with a partition plate and an adapter plate with projections is disclosed in US10048014B 2. A spacer plate having substantially the same outer size as the adapter plate is arranged in a sandwich structure between the frame plate and/or the pressure plate and the adapter plate. During operation, pressure rises inside the plate heat exchanger, which pressure tends to press the plate package, in particular the outer heat exchanger plates, outwards. Such outward bending is prevented by a partition provided directly outside the frame plate and/or the pressure plate. The projection on the adapter plate is an outwardly convex area substantially corresponding to the size and diameter of the port hole of the heat exchanger plate. The purpose of the projections is to better withstand the pressure exerted by the fluid in the plate interspaces.

However, the additional separator plates make the manufacture more complicated, since more components have to be fixed when producing the plate heat exchanger, for example when brazing, so that the weight of the plate heat exchanger becomes large.

In US patent 8662152B2 a plate heat exchanger is disclosed, which comprises a number of heat exchanger plates arranged side by side to each other and interconnected in a brazed connection to form a plate stack, wherein the plate heat exchanger comprises a number of port channels extending through the heat exchanger plates, and wherein the plate heat exchanger further comprises an end plate covering each end of the plate stack and having port holes for coupling the port channels, wherein at least one of the end plates has at least one port hole provided with a protruding cap, and wherein the cap comprises means for increasing the strength and means for closing at least one of the end plates against an adjacently arranged heat exchanger plate.

Typically, the adapter plate has a greater thickness than the heat exchanger plate. One disadvantage of thicker adapter plates with more material is that the thermal "hysteresis" increases for these plates. Due to this higher thermal hysteresis of the adapter plate, a reduced thermal fatigue performance of the plate heat exchanger is obtained. Since the heat exchanger plates are manufactured from thinner material, they adapt more quickly to the temperature of the medium, which leads to an undesired temperature difference between the heat exchanger plate and the adapter plate and thus to a heat-related pressure. Such pressure is particularly pronounced at the corner regions of the adapter plate, since the space around the ports there towards the sides is very limited and thus easily affects the bonding surfaces of the adapter plate.

Accordingly, a heat exchanger with improved adapter plates is desired to overcome or ameliorate at least one of the disadvantages and problems of the prior art.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to reduce or at least alleviate the above mentioned problems. In particular, it is further directed to a plate heat exchanger, which can be manufactured at low cost. In particular, it is an object of the invention to achieve a permanently connected light plate heat exchanger with improved strength at the corner regions of the adapter plate. Such a plate heat exchanger also has an advantageous load distribution in the port area compared to prior art solutions.

According to an aspect of the invention, the invention relates to an adapter plate for a plate heat exchanger, wherein the plate heat exchanger further comprises a frame plate and a plurality of heat exchanger plates, the plurality of heat exchanger plates being arranged adjacent to each other and being combined with the frame plate to form a plate package, the frame plate being arranged outside the outermost heat exchanger plate of the plate heat exchanger, and the adapter plate being arranged outside the frame plate, wherein the heat exchanger plate and the frame plate have a plurality of port holes, which form ports extending through the plate package, wherein the adapter plate comprises a protrusion and an eccentric embossment arranged on the protrusion, the protrusion corresponding to a port of the plate package, and the embossment being positioned eccentrically with respect to the port, thereby creating more space in the corner area of the adapter plate to protect the bonding surface around the port towards the side area.

According to one embodiment of the invention, the eccentric embossment on the protrusion is in the form of a dome.

According to an embodiment of the invention, the eccentric embossment is located eccentrically with respect to the port towards a corner region of the adapter plate.

According to an embodiment of the invention, the adapter plate also has port holes, which are concentric with the corresponding port holes of the frame plate and the heat exchanger plate.

According to an embodiment of the invention, the inlet pipe and/or the outlet pipe connection for the first medium and the second medium can be provided on the adapter plate.

According to an embodiment of the invention, the adapter plate comprises a plurality of protrusions, each of the plurality of protrusions being provided with an eccentric relief thereon.

According to an embodiment of the present invention, the sizes of the eccentric embossments on each of the plurality of protrusions are different from each other.

According to an embodiment of the invention, the adapter plate, the frame plate and the plurality of heat exchanger plates are permanently interconnected.

According to an embodiment of the invention, the adapter plate, the frame plate and the plurality of heat exchanger plates are interconnected by brazing.

According to another aspect of the present invention, the present invention also relates to a plate heat exchanger, comprising an adapter plate according to any of the preceding embodiments.

Still other objects, features, aspects and advantages of the present invention will become apparent from the accompanying drawings and the following detailed description.

Drawings

The features, objects, and advantages of the present invention will become more apparent from the description taken in conjunction with the following drawings, in which:

fig. 1 shows a perspective view of an exemplary plate heat exchanger.

Fig. 2 shows a sectional perspective view of the plate heat exchanger according to fig. 1.

Fig. 3 shows a detail of an end plate and an adapter plate of a plate heat exchanger.

Fig. 4 shows a top view of a prior art adapter plate.

Fig. 5 shows a top view of an adapter plate according to the invention.

Fig. 6 shows a perspective view of a plate package of a plate heat exchanger according to the invention.

List of reference numerals

1, 1' frame plate/press plate

2 Heat exchanger plate

3, 3' adapter plate

4 protrusion

5, 5', 5' ' embossments

6 inlet and/or outlet pipe connection

7 plate heat exchanger

8 port holes.

Detailed Description

Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. It is also to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms "mounted," "connected," "supported," and "coupled" and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Further, "connected" and "coupled" are not restricted to physical or mechanical connections or couplings.

The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the invention will be apparent from the description and drawings, and from the claims.

Fig. 1 shows a perspective view of an exemplary plate heat exchanger. The plate heat exchanger 7 comprises at least one frame plate/pressure plate and a number of heat exchanger plates. In the plate heat exchanger, each heat exchanger plate has four port holes 8, which form port flow channels extending through the plate package and form inlets and outlets for different media. In this plate heat exchanger, at least one inlet and/or outlet pipe connection 6 is provided at the outermost plate of the plate heat exchanger 7.

Fig. 2 shows a sectional perspective view of the plate heat exchanger according to fig. 1. The plate heat exchanger comprises at least one frame plate/press plate 1 and a number of heat exchanger plates 2, which form a plate package. The frame plate 1 is arranged outside the outermost heat exchanger plate of the plate heat exchanger. The frame plate/pressure plate 1 also functions as a sealing fluid. The heat exchanger plates 2 and the frame plates 1 may have a plurality of port holes for different media, which form ports extending through the plate package. Outside the frame plate/press plate 1, adapter plates 3, 3' are arranged. The adapter plate 3, 3' may likewise have port holes which are concentric with the corresponding port holes of the heat exchanger plate 2 and the frame plate 1.

Fig. 3 shows a detail of an adapter plate 3 of a plate heat exchanger. When there is no inlet and/or outlet pipe, the adapter plate 3 is closed. In one embodiment, the adapter plate 3 may have a protrusion 4, which protrusion 4 may take the form of a bulge, i.e. having an outwardly convex area substantially corresponding to the size of the port hole of the frame plate 1. The purpose of the projections is to better withstand the pressure exerted by the fluid in the plate interspaces. The diameter of such a projection may correspond to the diameter of the port hole. In one embodiment, a further at least one relief 5 is provided in the protrusion 4 of the adapter plate 3. This relief 5 may be configured as a dome, which protrudes further outwards from the protrusion 4 of the adapter plate 3. In such embodiments, the redistribution of the load is incorporated into a convex design with relief features.

Fig. 4 shows a top view of an adapter plate 3 according to the prior art. The corner region of the adapter plate 3 may be provided with a protrusion 4. In the adapter plate 3 shown in fig. 4, the protrusions 4 of each adapter plate 3 are provided with an embossment 5, which embossments 5 are arranged concentrically with the corresponding protrusions 4. As mentioned above, there is a certain temperature difference between the heat exchanger plate and the adapter plate and thus a heat-related pressure is caused. Since the space around the ports at the corner regions of the adapter plate 3 towards the sides is very limited, the above-mentioned heat-related pressure is relatively liable to influence the bonding surfaces there.

Fig. 5 shows a top view of an adapter plate 3 according to the invention. Unlike the adapter plate 3 shown in fig. 4, the reliefs 5', 5 ″ on the protrusions 4 of the adapter plate 3 in the embodiment shown in fig. 5 are arranged eccentrically with respect to the corresponding protrusions 4. In particular, the eccentric reliefs 5', 5 ″ are positioned eccentrically with respect to the ports of the plate pack towards the corner regions of the adapter plate 3. In the adapter plate 3 shown in fig. 5, the dimensions S1, S4 of the eccentric reliefs 5', 5 ″ of the two protrusions 4 differ from one another.

Fig. 6 shows a perspective view of a plate package of a plate heat exchanger according to the invention. According to one embodiment, the frame plate/pressure plate 1, the heat exchanger plate 2 and the adapter plate 3 are permanently connected to each other, preferably by melting of a metal material, such as brazing, gluing, welding or a combination thereof. And the inlet and outlet tubes may be brazed to the plates and more precisely to the adapter plate 3. The plates may also be permanently joined by an adhesive. During operation, a pressure rises inside the plate heat exchanger, which pressure tends to press the plate package, in particular the outer heat exchanger plates, outwards. Such outward bending is prevented by providing the adapter plate 3 directly outside the frame plate/pressure plate 1. At the same time, the bosses 5', 5 ″ located eccentrically towards the corner regions of the adapter plate 3 may create more space at the corner regions of the adapter plate to protect the bonding surfaces around the ports towards the side regions. Furthermore, the design of the eccentric embossments 5', 5 ″ can produce an advantageous load distribution in the port area as desired.

The plate heat exchanger according to the present invention has been described in detail with reference to the accompanying drawings. It will be understood by those skilled in the art, however, that the foregoing is illustrative and descriptive of some specific embodiments only, and not as limiting the scope of the invention, especially the scope of the claims.

The invention is not limited to the embodiments disclosed and discussed, but may be varied and modified within the scope of the claims.

Claims (10)

1. An adapter plate with an eccentric embossment for use in a plate heat exchanger, wherein the plate heat exchanger further comprises a frame plate and a plurality of heat exchanger plates arranged adjacent to each other and in combination with the frame plate forming a plate pack, the frame plate being arranged outside the outermost heat exchanger plate of the plate heat exchanger and the adapter plate being arranged outside the frame plate, wherein the heat exchanger plate and the frame plate have a plurality of port holes, which port holes form ports extending through the plate pack,

characterized in that the adapter plate comprises a protrusion and an eccentric relief provided on the protrusion, wherein the protrusion corresponds to the port and the relief is positioned eccentrically with respect to the port, thereby creating more space in the corner regions of the adapter plate to protect the bonding surface around the port towards the side regions.

2. Adapter plate with eccentric relief according to claim 1, characterized in that the eccentric relief on the protrusions is in the form of a dome.

3. The adapter plate with eccentric relief of claim 2, wherein the eccentric relief is eccentrically positioned relative to the port toward a corner region of the adapter plate.

4. The adapter plate with eccentric embossment as in claim 1, wherein the adapter plate also has port holes that are concentric with the respective port holes of the frame and heat exchanger plates.

5. Adapter plate with eccentric relief according to claim 4, characterized in that inlet and/or outlet pipe connections for the first and second media can be provided on the adapter plate.

6. The adapter plate with eccentric embossment of claim 1, wherein the adapter plate includes a plurality of protrusions, each of the plurality of protrusions having eccentric embossment disposed thereon.

7. The adapter plate with eccentric relief according to claim 6, wherein the size of the eccentric relief on each of the plurality of protrusions is different from each other.

8. The adapter plate with eccentric embossment of any one of claims 1-7, wherein the adapter plate, the frame plate and the plurality of heat exchanger plates are permanently connected to each other.

9. The adapter plate with eccentric relief according to claim 8, characterized in that the adapter plate, the frame plate and the plurality of heat exchanger plates are connected to each other by brazing.

10. A plate heat exchanger, characterized in that it comprises an adapter plate with an eccentric embossment according to any of claims 1-9.

Images