Plate heat exchanger in a sealed design

Abstract

The disclosure relates to a plate heat exchanger in a sealed design, with a stacked arrangement comprising a front-side and a rear-side end plate, wherein at least one end plate is constituted as a connection plate, heat exchanger plates which are arranged and stacked between the front-side and the rear-side end plate, in such a way that cavities for accommodating a plurality of heat exchanger media are formed between the heat exchanger plates, and sealing elements which are disposed to seal the cavities, and a clamping device, configured to exert an external clamping pressure on the stacked arrangement for the tensioning, wherein the clamping device is formed to encompass the stacked arrangement in a form-fit manner at least in sections, namely at least in a corner region of the stacked arrangement.

Claims

1. A plate heat exchanger in a sealed design, with: a stacked arrangement comprising: a front-side and a rear-side end plate, wherein at least one end plate is constituted as a connection plate having at least one connection, heat exchanger plates which are arranged and stacked between the front-side and the rear-side end plate, in such a way that cavities for accommodating a plurality of heat exchanger media are formed between the heat exchanger plates, and sealing elements which are disposed to seal the cavities, and a clamping device configured to exert an external clamping pressure on at least one of the front-side and the rear-side end plates of the stacked arrangement for tensioning, wherein the clamping device is formed to encompass the stacked arrangement in a form-fit manner at least in a corner region of the stacked arrangement and is formed with a plurality of one-piece closed profile elements having an inner surface that engages the stacked arrangement such that the inner surface rests continuously on an external surface of the corner region of the stacked arrangement and an outer surface that faces away from the stacked arrangement and adjustable pretensioning elements, which are disposed upon the outer surface and contact the stacked arrangement to adjust the external clamping pressure of the clamping device by adjusting the adjustable pretensioning elements; wherein at least one of the plurality of closed profile elements is arranged in contact with the at least one connection of the connection plate, wherein the plurality of closed profile elements includes at least one continuous closed profile element, which extends over a region of at least 50% of a length of a section of the stacked arrangement between connections on the connection plate thereby encompassing the stacked arrangement, and wherein wall sections of the plurality of profile elements are formed as flat profiles.

2. The plate heat exchanger according to claim 1, wherein the plurality of closed profile elements all or at least in pairs have an essentially identical width in the longitudinal direction of the stacked arrangement.

3. The plate heat exchanger according to claim 1, wherein the adjustable pretensioning elements are configured to introduce the external clamping pressure on the stacked arrangement.

4. The plate heat exchanger according to claim 1, wherein the adjustable pretensioning elements are formed on one or all the closed profile elements spaced apart from one another in the transverse direction of the stacked arrangement.

5. The plate heat exchanger according to claim 1, wherein the plurality of closed profile elements are formed leaving connection regions free, in which connections are disposed on the connection plate.

6. The plate heat exchanger according to claim 1, wherein the adjustable pretensioning elements are formed as screw elements, wherein the screw elements are screwed into associated threaded sections in the plurality of closed profile elements.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The disclosure is explained in greater detail below in reference to the figures. In the figures:

(2) FIG. 1 shows a perspective view of a plate heat exchanger in a sealed design according to the prior art,

(3) FIG. 2 shows a perspective view of a plate heat exchanger in a sealed design, wherein a clamping device is formed by a plurality of closed profile elements,

(4) FIG. 3 shows a view of the plate heat exchanger from FIG. 2 from the side,

(5) FIG. 4 shows a view of the plate heat exchanger from FIG. 2 from the front,

(6) FIG. 5 shows a view of the plate heat exchanger from FIG. 2 from the rear,

(7) FIG. 6 shows a perspective view of a closed profile element of the clamping device with the plate heat exchanger in FIGS. 2 to 5 and

(8) FIG. 7 shows a perspective view of a plate heat exchanger in a sealed design, wherein a clamping device is formed by a continuous closed profile element over the whole length of the plate heat exchanger.

DETAILED DESCRIPTION OF THE DRAWINGS

(9) FIG. 2 shows a perspective view of a plate heat exchanger 20 in a sealed design, wherein stacked heat exchanger plates 24 are disposed in a stacked arrangement 21 between a front-side end plate 22 and a rear-side end plate 23, which is constituted as a connection plate. Stacked arrangement 21 is encompassed by a plurality of closed profile elements 28 in a region 25 between connections 26, 27. The plurality of closed profile elements 28 have an essentially uniform distance from one another. In other embodiments (not shown), it is envisaged that the section between connections 26, 27 is encompassed wholly or partially by a single closed profile element. Provision can also be made such that a plurality of closed profile elements jointly encompass essentially completely the region between connections 26, 27.

(10) According to FIG. 2, there are provided on each of the plurality of closed profile elements 28 screws 29, 30 which are screwed into associated threaded sections, so that screws 29, 30 press against rear-side end plate 23, as a result of which a pretensioning is produced. In other embodiments (not shown), further screws can be provided in closed profile elements 28. In order to form the plurality of closed profile elements 28, use may be made of standardised profiles which preferably conform to the usual DIN standards.

(11) FIGS. 3 to 5 show a schematic view of plate heat exchanger 20 from FIG. 2 from the side, from the front and from the rear.

(12) Finally, FIG. 6 shows a perspective view of closed profile elements 28 used in the plate heat exchanger in FIGS. 2 to 5.

(13) FIG. 7 shows a perspective view of a plate heat exchanger 20 in a sealed design, wherein a continuous closed profile element 31 extends over the whole length of plate heat exchanger 20.

(14) The features of the disclosure disclosed in the above description, the claims and the figures can be of importance individually as well as in any combination for the realization of the disclosure in its various embodiments.