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EP 2 406 573 B1 |
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EUROPEAN PATENT SPECIFICATION |
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Mention of the grant of the patent: |
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01.05.2013 Bulletin 2013/18 |
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Date of filing: 23.02.2010 |
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International Patent Classification (IPC):
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International application number: |
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PCT/SE2010/050206 |
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International publication number: |
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WO 2010/104449 (16.09.2010 Gazette 2010/37) |
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PLATE HEAT EXCHANGER
PLATTENWÄRMETAUSCHER
ÉCHANGEUR DE CHALEUR À PLAQUES
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Designated Contracting States: |
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AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO
PL PT RO SE SI SK SM TR |
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Priority: |
13.03.2009 SE 0950151
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Date of publication of application: |
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18.01.2012 Bulletin 2012/03 |
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Proprietor: Alfa Laval Corporate AB |
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221 00 Lund (SE) |
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Inventors: |
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- GIDNER, Johan
S-227 63 Lund (SE)
- FORSTENIUS, Christopher
S-21240 Malmö (SE)
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(74) |
Representative: von Friesendorff, Filip |
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Alfa Laval Corporate AB
P.O. Box 73 221 00 Lund 221 00 Lund (SE) |
(56) |
References cited: :
GB-A- 674 032 GB-A- 2 312 042
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GB-A- 2 107 845 JP-A- 10 103 889
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Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
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AREA OF INVENTION
[0001] The present invention refers generally to plate heat exchangers allowing a heat transfer
between two fluids at different temperature for various purposes. Specifically, the
invention relates to a plate heat exchanger comprising a first end plate, a second
end plate and a package of heat exchanger plates placed between the frame plate and
the pressure plate. A plurality of threaded tightening bolts extend between the first
end plate and the second end plate and are arranged to hold with the aid of nuts or
the like these plates at a desired distance from each other in order to hold the package
of heat exchanger plates together. A plate heat exchanger according to the preamble
of claim 1 is known from documents
GB 2 312 042 A.
BACKGROUND OF INVENTION
[0002] Plate heat exchangers are normally provided with a frame plate, a pressure plate,
also called end plates, and a package of heat exchanger plates disposed adjacent to
one another and placed between the frame plate and the pressure plate. Gaskets are
disposed between the heat exchanger plates. The gaskets are accommodated in gasket
grooves on the heat exchanger plate, which are formed during the form-pressing of
the heat exchanger plates. Plate heat exchangers further comprise inlet and outlet
ports, which extend through the plate package, for handling two or more media in the
plate heat exchanger. A plurality of threaded tightening bolts extend between the
frame plate and the pressure plate and are arranged to hold with the aid of nuts or
the like these plates at a desired distance from each other in order to hold the package
of heat exchanger plates together and to ensure that the plate heat exchanger does
not leak.
[0003] Heat exchanger plates are normally made by form-pressing of sheet metal and are disposed
in the plate package in such a way as to form first plate intermediate spaces, which
communicate with the first inlet port and the first outlet port, and second plate
intermediate spaces which communicate with the second inlet port and the second outlet
port. The first and second plate intermediate spaces are disposed alternately in the
plate package.
[0004] The design of heat exchanger plate for plate heat exchangers aims to use as much
as possible of heat transfer or heat exchange area for the heat exchange between two
or more media, but it also needs take in account how the gaskets can be applied on
the heat exchanger plate to be securely fastened and to fulfil its seal functionality.
The location of the threaded tightening bolts are preferably selected to achieve a
plate heat exchanger not exposed too much stresses.
[0005] SE-C-171 499 shows a plate heat exchanger with a frame plate, a pressure plate, a package of heat
exchanger plates, two tie bars as well as a special supporting device. The frame plate
and the supporting device are both provided with feet. Through influence from among
other things the yokes a pressure is created on the pressure plate and the package
of plates is kept together. The construction shows the disadvantage that both the
supporting device and the pressure plate with necessity are created in the form of
a very strong construction. Further on the auxiliary carrying bar to support plates
in connection with mounting and demounting of the heat exchanger constitutes an unnecessary
complication.
[0006] In
EP-B1-1 027 571 is shown another plate heat exchanger, where tightening bolts have been integrated
into the carrying bar and the guide bar, and creates a guiding element for the pressure
plate and the heat exchanger plates. The localization of the tightening bolts is thereby
more optimal to resist the forces laid onto the plate heat exchanger during operation.
The guiding element is surrounded by a protecting sleeve extending from the frame
plate to the pressure plate and protecting the threads of the guiding element from
engagement with the heat exchanger plates. The guiding element is also arranged to
be connected to a supporting device situated at a substantial distance from the pressure
plate.
[0007] The drawbacks with the above solutions are that the stresses are and forces are too
great if the solutions are applied on larger plate heat exchangers.
DISCLOSURE OF INVENTION
[0008] The object of the present invention is to create a construction which is gives an
optimal load distribution over the plate heat exchanger still being cheaper and less
complicated to manufacture than the one described above.
[0009] The object is achieved by a plate heat exchanger having the features of claim 1 The
advantages are attained by using at least one guiding element for guiding the first
end plate and the heat exchanger plates relatively the second end plate, and where
the guiding element is releasably arranged on at least one of the threaded tightening
bolts. The guiding element extends through an aperture and the at least one guiding
element is provided with a through-hole to receive the at least one of the threaded
tightening bolts and an external geometry corresponding to a cut-out of the heat exchanger
plates and the first end plate.
[0010] According to another aspect of the invention the plate heat exchanger is provided
with two guiding elements, a first guiding element arranged in an upper portion of
the plate heat exchanger and a second guiding element arranged in a lower portion
of the plate heat exchanger. The first and second guiding element can have an identical
cross section profile.
[0011] According to yet another aspect of the invention the second guiding element further
is arranged to engage with a guiding rail for movably receiving the second guiding
element.
[0012] According to still another aspect of the invention the guiding rail for movably receiving
the second guiding element is fully or partially supported by the ground.
[0013] According to a further another aspect of the invention the at least one guiding element
includes two separate parts, and the at least one guiding element and the guiding
rail is made of an extrudable material.
[0014] According to a further another aspect of the invention a supporting device is releasably
arranged at a considerable distance from the first end plate at the end of the upper
and lower tightening bolts, and extending between the upper and lower tightening bolts.
[0015] According to still another aspect of the invention the at least one guiding element
is movable along the tightening bolts and where one part of the guiding element can
be removed as the heat exchanger plates are pressed together by the first end plate
to form the operating plate heat exchanger, where after the removed one part of the
guiding element can be arranged on a free portion of the tightening bolt outside the
plate heat exchanger.
[0016] According to another aspect of the invention the heat exchanger plates rest on the
at least one guiding element and wherein the first end plate rests on a guiding rail,
upon which guiding rail the at least one guiding element is movably received.
[0017] Further aspects of the invention are defined in the dependent claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The present invention is now to be explained more closely by means of a description
of various embodiments and with reference to the drawings attached hereto.
Fig. 1 discloses a perspective view of a plate heat exchanger according to an embodiment
of the invention;
Fig. 2 shows a side view of a plate heat exchanger according to an embodiment of the
invention;
Fig. 3 discloses a partial view of a plate heat exchanger according to an embodiment
of the invention;
Fig. 4 discloses a cross section view A-A of a plate heat exchanger according to an
embodiment of the invention;
Fig. 5 discloses a first partial detailed view B of the plate heat exchanger of Fig.
4 according to an embodiment of the invention;
Fig. 6 discloses a second partial detailed view C of the plate heat exchanger of Fig.
4 according to an embodiment of the invention;
Figs. 7a-b show different views of a guiding element according to the invention; and
Figs. 8a-b show different views of a guiding rail according to the invention.
DETAILED DESCRIPTION OF EMBODIMENTS
[0019] Heat exchangers are used for transferring heat between two fluids separated by a
solid body. Heat exchangers can be of several types, the most common are spiral heat
exchangers, tubular heat exchangers and plate heat exchangers. Plate heat exchangers
are used for transferring heat between a hot and a cold fluid that are flowing in
alternate flow passages formed between a set of heat exchanger plates. The arrangement
of heat exchanger plates defined above is enclosed between end plates that are relatively
thicker than the heat exchanger plates. The inner surface of each end plate faces
the heat transfer plates.
[0020] Figs. 1-2 disclose a schematic view of a plate heat exchanger 1 comprising a number
of compression-molded heat exchanger plates 4, which heat exchanger plates 4 are provided
in parallel to each other and successively in such a way that they form a plate package.
The plate package is provided between a first end plate 2, also called pressure plate,
and a second end plate 3, also called frame plate. Between the heat exchanger plates
4, first plate interspaces and second plate interspaces are formed. The end plates
2 and 3 are pressed against the plate package and against one another by tightening
bolts or tie bars 5a-c, which extend through the end plates 2 and 3, and which tightening
bolts 5a-c are kept in place by nuts 6, 20.
[0021] The plate heat exchanger 1 comprises a first inlet port and a first outlet port for
a first medium, and a second inlet port and a second outlet port for a second medium.
The inlet and outlet ports extend through the second end plate 3 and the plate package.
It is of course also possible for the inlet and outlet ports to be disposed on both
sides of the plate heat exchanger 1, i.e. on both end plates 2 and 3. The two medium
may be led in the same or in opposite directions relative to one another.
[0022] The heat exchanger plates 4 in the shown embodiment are disposed in such a way in
the plate package as to form first plate intermediate spaces which communicate with
the first inlet port and the first outlet port, and second plate intermediate spaces,
which communicate with the second inlet port and the second outlet port. The first
and second plate intermediate spaces are disposed alternately in the plate package.
The separation of the plate intermediate spaces may be by gaskets extending in gasket
grooves formed during the form-pressing of the heat exchanger plates. The gaskets
are usually made of a rubber or polymer material. The heat exchanger plates 4 are
provided with a corrugated pattern to improve the heat exchange between the two fluids.
[0023] To guide the heat exchanger plates 4, to protect the threaded tightening bolts 5a,
5b from wear of the heat exchanger plates 4, to simplify the construction and to make
the construction cheaper, there has been provided guiding elements 7, 7a, 7b on the
uppermost and lowermost of the tightening bolts 5a, 5b.
[0024] Compared with state of the art plate heat exchanger the uppermost and lowermost of
the tightening bolts 5a, 5b replace the traditional carrying and guiding bar, which
otherwise serve to enable the opening/closing of the plate heat exchanger by enabling
the first end plate 2 and the heat exchanger plates 4 to be moved along the carrying
bar and the guiding bar while the plate heat exchanger is standing. By providing upper
and lower guiding elements 7a, 7b that arranged on the tightening bolts 5a-5b, respectively,
and where the guiding elements 7a, 7b has an outer cross section geometry (see Figs.
7a-b) similar to the traditional carrying bar the heat exchanger plates 4, having
a cut-out profile 11 corresponding to an lower portion of the guiding element 7a,
7b having an external geometry 10, can be guided along the upper guiding element 7a.
The tightening bolts 5a, 5b are received in an aperture or through hole 9 of the guiding
element 7a, 7b, which through hole 9 extends along the entire longitudinal length
of the guiding element 7a, 7b. The guiding element 7a, 7b is made of an extrudable
material to make cheaper to manufacture and to lighten the construction. The extrudable
material can be plastic, aluminum or any other suitable construction material.
[0025] Further tightening bolts 5c are present in a usual way between the second end plate
3 and the first end plate 2, and are placed in notches or recesses at the edges of
the second end plate 3 and the first end plate 2.
[0026] Since the guiding element 7a, 7b is made of an extrudable material it cannot withstand
the same load as a corresponding metal construction. Therefore the load of the heat
exchanger plates 4 and the first end plate 2 will be transferred to the ground via
a second or lower guiding element 7b and a guiding rail 12. The upper guiding element
7a and the lower guiding element 7b are preferably identical to reduce manufacturing
costs, but different shapes are also possible. In the shown embodiment, see e.g. Fig.
6, the lower external geometry 10 of the guiding element 7b corresponds to an internal
shape 16 of the guiding rail 12 enabling the guiding element 7b to be secured to the
guiding rail 12 and to be movable along the guiding rail 12. In some applications
the plate heat exchanger 1 is arranged on frame, which fully or partially supports
the guiding rail 12.
[0027] The upper guiding element 7a extends through an aperture 8 of uppermost portion of
the first end plate 2 so that the first end plate 2 can be movable relative to the
upper guiding element 7a. Similarly extends the lower guiding element 7b through an
aperture 17 of the lowermost portion of the first end plate 2. Both the lower guiding
element 7b and the upper guiding element 7a only guides the first end plate 2, whereas
the load of the first end plate 2 is carried by the guiding rail 12 upon which the
first end plate 2 rests. The heat exchanger plates 4 rest on the lower guiding element
7b and is guided laterally by the upper guiding element 7a.
[0028] Each guiding element 7a, 7b comprise two parts 13a, 13b; 14a, 14b (see Fig. 3) to
enable the guiding of the heat exchanger plates 4 during the opening and closing process
of the plate heat exchanger 1 and thus enabling an outer guiding element part 14a,
14b to be removed when the heat exchanger plates 4 and the first end plate 2 are tighten
together to form the operational plate heat exchanger 1, and applying nuts 6 onto
the tightening bolt 5a, 5b to keep the first end plate 2 in place and the heat exchanger
plates 4 tighten together between the first end plate 2 and the second end plate 3.
The length of the inner guiding element part 13a, 13b is preferably slightly less
than the length corresponding to the total thickness of all the heat exchanger plates
4 in the package of plates and the first end plate 2. The length of the outer guiding
element part 14a, 14b is preferably slightly less than the remaining free end of the
tightening bolt 5a, 5b when the inner guiding element part 13a, 13b has been arranged
onto the tightening bolt 5a, 5b.
[0029] The upper guiding element 7a can be provided with wear protection arrangement to
reduce the wear from the heat exchanger plates 4. The wear protection arrangement
can be of a plate or rubber material or any other suitable material, and is preferably
clamped onto the upper guiding element 7a.
[0030] The guiding element 7a, 7b has an upper portion formed as an external geometry 19
having a width corresponding to the opening width of the cut-out 11 of the heat exchanger
plates 4 and the apertures 8, 17 of the first end plate 2. Thereby both the upper
guiding element 7a and the lower guiding element 7b can guide the first end plate
2 laterally, whereas the load of the first end plate 2 is carried by the guiding rail
12. The upper guiding element 7a and the lower guiding element 7b will also guide
the heat exchanger plates 4 laterally by the external geometry 19 of the guiding elements
7a, 7b and the lower guiding element 7b will carry the load of the heat exchanger
plates 4. The load is transferred directly to the guiding rail 12 and further to the
ground. The external geometry 10 of the lower portion of the upper guiding element
7a guides the heat exchanger plates 4 and serves a tilting protection for the heat
exchanger plates 4, when the plate heat exchanger 1 is open.
[0031] It is also possible that the upper guiding element 7a fully or partially carries
the load of the heat exchanger plates 4 by the external geometry 10.
[0032] In Figs. 5-6 the guiding element 7a, 7b and the guiding rail 12 is shown in more
details, partial enlargement B and C of Fig. 4, as they are arranged in the plate
heat exchanger 1. One advantage of the suggested guiding profile 7a, 7b is that the
same component can be used both as a carrying and guiding bar in the upper section
of the plate heat exchanger 1 as well as carrying and guiding bar in the lower section
of the plate heat exchanger 1. The guiding rail 12 serves as a weight transferring
element, which also enables that the lower outer guiding element 14b can be removed
when the heat exchanger plates 4 and the first end plate 2 are tighten together so
that a nut 6 can be arranged on the lowermost tightening bolt 5b in abutment with
the first end plate 2 and to keep the plate heat exchanger 1 in the closed operational
mode.
[0033] As shown in Fig. 1-2 the plate heat exchanger 1 can also be provided with a support
device 15 to enable the plate heat exchanger 1 to be opened in an easy way, which
support device 15 is provide at the free end of the tightening bolts 5a, 5b and kept
in place by nuts 20. The support device 15 extends between the two tightening bolts
5a and 5b, and ensures that distance between the two tightening bolts 5a and 5b is
invariable and that forces affecting the upper tightening bolt 5a are transferred
to the ground. The further details of function and operation of the support device
15 will be described in connection with the description of the opening and closing
process of the plate heat exchanger 1.
[0034] Now the opening of the plate heat exchanger 1 will be described. In Fig. 1 and 2
the plate heat exchanger 1 is operational mode. For enabling maintenance such as cleaning,
repairing, replacing heat exchanger plates etc., the plate heat exchanger 1 can be
opened. The nuts 20 are screwed off and the supporting device 15 and the outer guiding
elements 14a, 14b are taken away of the tightening bolts 5a, 5b. The nuts 6 arranged
to the tightening bolts 5a, 5b are screwed off and the outer guiding elements 14a,
14b are again arranged onto the free parts of the tightening bolts 5a, 5b and pushed
abutment against the inner guiding elements 13a, 13b. The package of heat exchanger
plates 4 and the first end plate 2 is still kept together by the further tightening
bolts 5c. The supporting device 15 is once again mounted onto the free parts of the
upper and lower tightening bolts 5a, 5b. The supporting device 15 is supported to
the ground via the outer guiding element 14b and the guiding rail 12. The nuts 20
are brought upon the tightening bolts 5a, 5b and tightened. The further tightening
bolts 5c are demounted. As the tightening bolts 5c are released the first end plate
2 and the heat exchanger plates 4 may thereafter be moved along the guiding elements
7a, 7b. Hereby an open mode of service of the plate heat exchanger 1 is attained,
when the heat exchanger plates 4 are situated between the end plates 2, 3 may be separated
for cleaning and one or several heat exchanger plates 4 may be taken out and eventually
new ones put in without the need for demounting of the rest of heat exchanger plates
4. Closing or tighten together the plate heat exchanger 1 into operational mode is
executed in an analogous reversed way.
[0035] The supporting device 15 is a bar, a plate iron or the like with a sufficient length
to be able to hold the uppermost and lowermost tightening bolts 5a, 5b at a correct
distance in relation to each other and at the same time in the open mode of service
for the plate heat exchanger 1 to be able to serve as a supporting device 15 for the
whole plate heat exchanger 1 together with the second end plate 2. It further ensures
that forces affecting the upper tightening bolt 5a are transferred to the ground via
the lower tightening bolt 5a.
[0036] The guiding element 7a, 7b and the guiding rail 12 are preferably made of an extrudable
material such as a plastic or aluminum profile, but can also be made of any other
suitable manufacturing method or material.
[0037] The invention is not limited to the embodiments described above and shown on the
drawings, but can be supplemented and modified in any manner within the scope of the
invention as defined by the enclosed claims.
1. A plate heat exchanger (1) including a first and second end plate (2, 3), and a core
of heat exchanger plates (4) arranged between the first and second end plate (2, 3),
whereby a plurality of threaded tightening bolts (5a, 5b, 5c) extend between the first
and second end plate (2, 3) and are arranged, with the aid of nuts (6, 20), to hold
these plates at a desired distance from each other in order to hold the core of heat
exchanger plates (4) together, wherein at least one guiding element (7a, 7b) for guiding
the first end plate (2) and the heat exchanger plates (4) relatively the second end
plate (3) is releasably arranged on at least one of the threaded tightening bolts
(5a, 5b), which guiding element (7a) extends through an aperture (8) in the first
end plate (2), characterized in that the at least one guiding element (7, 7a, 7b) comprises a lower portion and an upper portion,
the upper portion being provided with a through-hole (9) to receive the at least one
of the threaded tightening bolts (5a, 5b) and an external geometry (10) of the lower
portion corresponding to a cut-out (11) of the heat exchanger plates (4) and the first
end plate (2).
2. A plate heat exchanger (1) according to claim 1, wherein the plate heat exchanger
(1) is provided with two guiding elements (7a, 7b), a first guiding element (7a) arranged
in an upper portion of the plate heat exchanger (1) and a second guiding element (7b)
arranged in a lower portion of the plate heat exchanger (1).
3. A plate heat exchanger (1) according to claim 2, wherein the first and second guiding
elements (7a, 7b) have an identical cross section profile.
4. A plate heat exchanger (1) according to claim 2 or 3, wherein the second guiding element
(7b) further is arranged to engage with a guiding rail (12) for movably receiving
the second guiding element (7b).
5. A plate heat exchanger (1) according to claim 4, wherein the guiding rail (12) for
movably receiving the second guiding element (7b) is fully or partially supported
by the ground.
6. A plate heat exchanger (1) according to any preceding claim, wherein the at least
one guiding element (7a, 7b) includes two separate parts (13a, 13b, 14a, 14b).
7. A plate heat exchanger (1) according to claims 4 or 5, wherein the at least one guiding
element (7a, 7b) and the guiding rail (12) is made of an extrudable material.
8. A plate heat exchanger (1) according to any preceding claim, wherein the at least
one guiding element (7, 7a, 7b) is movable along the tightening bolts (5a, 5b) and
where one part (14a, 14b) of the guiding element (7a, 7b) can be removed as the heat
exchanger plates (4) are tighten together by the first end plate (2) to form the operating
plate heat exchanger (1), where after the removed one part (14a, 14b) of the guiding
element (7a, 7b) can be arranged on a free portion of the tightening bolt (5a, 5b)
outside the first end plate (2).
9. A plate heat exchanger (1) according to any preceding claim, wherein a supporting
device (15) is releasably arranged at a considerable distance from the first end plate
(2) at the end of the tightening bolt (5a, 5b), and extending between the tightening
bolts (5a, 5b).
10. A plate heat exchanger (1) according to claim 1, wherein the heat exchanger plates
(4) rest on the at least one guiding element (7b) and wherein the first end plate
(2) rests on a guiding rail (12), upon which guiding rail (12) the at least one guiding
element (7b) is movably received.
11. A plate heat exchanger (1) according to claim 10, wherein an upper located guiding
element (7a) only guides the heat exchanger plates (4) and the first end plate (2).
1. Plattenwärmetauscher (1), aufweisend eine erste und zweite Endplatte (2, 3) und einen
Kern aus Wärmetauscherplatten (4), der zwischen der ersten und zweiten Endplatte (2,
3) angeordnet ist, wodurch eine Vielzahl von Befestigungsgewindebolzen (5a, 5b, 5c)
zwischen der ersten und zweiten Endplatte (2, 3) verläuft und angeordnet ist, mithilfe
von Muttern (6, 20), diese Platten in einem gewünschten Abstand zueinander zu halten,
um den Kern aus Wärmetauscherplatten (4) zusammenzuhalten, wobei mindestens ein Führungselement
(7a, 7b) zum Führen der ersten Endplatte (2) und der Wärmetauscherplatten (4) bezüglich
der zweiten Endplatte (3) lösbar an mindestens einem der Befestigungsgewindebolzen
(5a, 5b) angeordnet ist, wobei das Führungselement (7a) durch eine Öffnung (8) in
der ersten Endplatte (2) verläuft,
dadurch gekennzeichnet, dass das mindestens eine Führungselement (7, 7a, 7b) einen unteren Abschnitt und einen
oberen Abschnitt umfasst, wobei der obere Abschnitt mit einer durchgehenden Bohrung
(9) versehen ist, um den mindestens einen der Befestigungsgewindebolzen (5a, 5b) aufzunehmen,
und eine äußere Geometrie (10) des unteren Abschnitts einem Ausschnitt (11) der Wärmetauscherplatten
(4) und der ersten Endplatte (2) entspricht.
2. Plattenwärmetauscher (1) nach Anspruch 1, wobei der Plattenwärmetauscher (1) mit zwei
Führungselementen (7a, 7b) versehen ist, ein erstes Führungselement (7a) in einem
oberen Abschnitt des Plattenwärmetauschers (1) angeordnet ist und ein zweites Führungselement
(7b) in einem unteren Abschnitt des Plattenwärmetauschers (1) angeordnet ist.
3. Plattenwärmetauscher (1) nach Anspruch 2, wobei das erste und zweite Führungselement
(7a, 7b) ein identisches Querschnittsprofil aufweisen.
4. Plattenwärmetauscher (1) nach Anspruch 2 oder 3, wobei das zweite Führungselement
(7b) ferner angeordnet ist, in eine Führungsschiene (12) zum beweglichen Aufnehmen
des zweiten Führungselements (7b) einzugreifen.
5. Plattenwärmetauscher (1) nach Anspruch 4, wobei die Führungsschiene (12) zum beweglichen
Aufnehmen des zweiten Führungselements (7b) vollständig oder teilweise vom Boden gehalten
ist.
6. Plattenwärmetauscher (1) nach einem vorhergehenden Anspruch, wobei das mindestens
eine Führungselement (7a, 7b) zwei separate Teile (13a, 13b, 14a, 14b) aufweist.
7. Plattenwärmetauscher (1) nach Anspruch 4 oder 5, wobei das mindestens eine Führungselement
(7a, 7b) und die Führungsschiene (12) aus einem extrudierbaren Material hergestellt
sind.
8. Plattenwärmetauscher (1) nach einem vorhergehenden Anspruch, wobei das mindestens
eine Führungselement (7, 7a, 7b) entlang der Befestigungsbolzen (5a, 5b) beweglich
ist und wo ein Teil (14a, 14b) des Führungselements (7a, 7b) entfernt werden kann,
wenn die Wärmetauscherplatten (4) durch die erste Endplatte (2) zusammen befestigt
werden, um den funktionierenden Plattenwärmetauscher (1) zu bilden, woraufhin das
entfernte eine Teil (14a, 14b) des Führungselements (7a, 7b) an einem freien Abschnitt
des Befestigungsbolzens (5a, 5b) außerhalb der ersten Endplatte (2) angeordnet werden
kann.
9. Plattenwärmetauscher (1) nach einem vorhergehenden Anspruch, wobei eine Haltevorrichtung
(15) lösbar in einem beträchtlichen Abstand zu der ersten Endplatte (2) am Ende des
Befestigungsbolzens (5a, 5b) angeordnet ist und zwischen den Befestigungsbolzen (5a,
5b) verläuft.
10. Plattenwärmetauscher (1) nach Anspruch 1, wobei die Wärmetauscherplatten (4) auf dem
mindestens einen Führungselement (7b) aufliegen und wobei die erste Endplatte (2)
auf einer Führungsschiene (12) aufliegt, wobei auf dieser Führungsschiene (12) das
mindestens eine Führungselement (7b) beweglich aufgenommen ist.
11. Plattenwärmetauscher (1) nach Anspruch 10, wobei ein oben befindliches Führungselement
(7a) nur die Wärmetauscherplatten (4) und die erste Endplatte (2) führt.
1. Échangeur de chaleur à plaques (1) comportant une première et une seconde plaques
d'extrémité (2, 3), et un noyau de plaques (4) d'échangeur de chaleur disposé entre
les première et seconde plaques d'extrémité (2, 3), ce par quoi une pluralité de boulons
de serrage filetés (5a, 5b, 5c) s'étend entre les première et seconde plaques d'extrémité
(2, 3) et est disposée, à l'aide d'écrous (6, 20), pour maintenir ces plaques à une
distance souhaitée les unes des autres afin de maintenir le noyau de plaques (4) d'échangeur
de chaleur ensemble, dans lequel au moins un élément de guidage (7a, 7b) pour guider
la première plaque d'extrémité (2) et les plaques (4) d'échangeur de chaleur par rapport
à la seconde plaque d'extrémité (3) est disposé de manière détachable sur au moins
l'un des boulons de serrage filetés (5a, 5b), lequel élément de guidage (7a) s'étend
à travers une ouverture (8) dans la première plaque d'extrémité (2),
caractérisé en ce que le au moins un élément de guidage (7, 7a, 7b) comprend une partie inférieure et une
partie supérieure, la partie supérieure étant dotée d'un trou traversant (9) pour
recevoir le au moins un des boulons de serrage filetés (5a, 5b) et une géométrie extérieure
(10) de la partie inférieure correspondant à une découpe (11) des plaques (4) d'échangeur
de chaleur et de la première plaque d'extrémité (2).
2. Échangeur de chaleur à plaques (1) selon la revendication 1, dans lequel l'échangeur
de chaleur à plaques (1) est doté de deux éléments de guidage (7a, 7b), un premier
élément de guidage (7a) disposé dans une partie supérieure de l'échangeur de chaleur
à plaques (1) et un second élément de guidage (7b) disposé dans une partie inférieure
de l'échangeur de chaleur à plaques (1).
3. Échangeur de chaleur à plaques (1) selon la revendication 2, dans lequel les premier
et second éléments de guidage (7a, 7b) présentent un profil de coupe transversale
identique.
4. Échangeur de chaleur à plaques (1) selon la revendication 2 ou 3, dans lequel le second
élément de guidage (7b) est en outre disposé pour être en prise avec un rail de guidage
(12) pour recevoir de manière mobile le second élément de guidage (7b).
5. Échangeur de chaleur à plaques (1) selon la revendication 4, dans lequel le rail de
guidage (12) pour recevoir de manière mobile le second élément de guidage (7b) est
entièrement ou partiellement soutenu par le sol.
6. Échangeur de chaleur à plaques (1) selon une quelconque revendication précédente,
dans lequel le au moins un élément de guidage (7a, 7b) comporte deux composants séparés
(13a, 13b, 14a, 14b).
7. Échangeur de chaleur à plaques (1) selon les revendications 4 ou 5, dans lequel le
au moins un élément de guidage (7a, 7b) et le rail de guidage (12) sont fabriqués
en un matériau extrudable.
8. Échangeur de chaleur à plaques (1) selon une quelconque revendication précédente,
dans lequel le au moins un élément de guidage (7, 7a, 7b) est mobile le long des boulons
de serrage (5a, 5b) et où un composant (14a, 14b) de l'élément de guidage (7a, 7b)
peut être retiré lorsque les plaques (4) d'échangeur de chaleur sont serrées ensemble
par la première plaque d'extrémité (2) pour former l'échangeur de chaleur à plaques
(1) fonctionnant, après quoi le composant (14a, 14b) retiré de l'élément de guidage
(7a, 7b) peut être disposé sur une partie libre du boulon de serrage (5a, 5b) à l'extérieur
de la première plaque d'extrémité (2).
9. Échangeur de chaleur à plaques (1) selon une quelconque revendication précédente,
dans lequel un dispositif de support (15) est disposé de manière détachable à une
distance considérable de la première plaque d'extrémité (2) à l'extrémité du boulon
de serrage (5a, 5b), et s'étend entre les boulons de serrage (5a, 5b).
10. Échangeur de chaleur à plaques (1) selon la revendication 1, dans lequel les plaques
(4) d'échangeur de chaleur reposent sur le au moins un élément de guidage (7b) et
dans lequel la première plaque d'extrémité (2) repose sur un rail de guidage (12),
rail de guidage (12) sur lequel le au moins un élément de guidage (7b) est reçu de
manière mobile.
11. Échangeur de chaleur à plaques (1) selon la revendication 10, dans lequel un élément
de guidage supérieur (7a) guide uniquement les plaques (4) d'échangeur de chaleur
et la première plaque d'extrémité (2).
REFERENCES CITED IN THE DESCRIPTION
This list of references cited by the applicant is for the reader's convenience only.
It does not form part of the European patent document. Even though great care has
been taken in compiling the references, errors or omissions cannot be excluded and
the EPO disclaims all liability in this regard.
Patent documents cited in the description