Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
  • F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
  • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
  • F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
  • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
  • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
  • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
  • F28F2250/10—Particular pattern of flow of the heat exchange media
  • F28F2250/102—Particular pattern of flow of the heat exchange media with change of flow direction

Definitions

• the present invention concerns a heater and/or cooler comprising at least one tank with at least one inner space and at least one plate heat exchanger for at least two heat exchanging fluids, which plate heat exchanger is permanently joined and comprises at least one core of plates with a plurality of heat exchanging plates and at least two end plates, the heat exchanging plates creating plate interspaces between each other.
• EP.A2 0 905 453 shows a water heater which in addition to a primary heat exchanger heated by a heat source also comprises a secondary heat exchanger and a hot water storage.
• the hot water storage is in close thermal contact with heat exchanging plates in the secondary heat exchanger and is built together with this.
• the described modes of execution of the hot water storage is, however, not at optimum concerning heat transfer, strength, material consumption etc.
• the purpose of the invention is to provide a heater for heating of water of such a kind that hot water may be provided directly at tapping even after a longer period of standstill without any need for hot water.
• the purpose of the invention is also, as a consequence of the just said, to create a heater or cooler for heating or cooling of any convenient fluid at all so that such a heated or cooled fluid may be provided directly even after a longer period without any need for in such a way heated or cooled fluid.
• the heat transfer between the working fluids in the heater and/or cooler shall be good under all service conditions, the strength characteristics be good for both the tank of the heater and/or cooler and for single plates in the core of plates and the material consumption be small.
• the invention thus comprises a heater and/or cooler comprising at least one tank with at least one inner space and at least one plate heat exchanger for at least two heat exchanging fluids, which plate heat exchanger is permanently joined and comprises at least one core of plates with a plurality of heat exchanging plates and at least two end plates, the heat exchanging plates creating plate interspaces between each other.
• Each one of the heat exchanging plates is provided with one or several corrugations vertically extending within an area delimited by two at a distance from each other situated parallel first and second planes, respectively, and which both are mainly in parallel with all the heat exchanging plates as well as the end plates of the plate heat exchanger.
• Each one of the heat exchanging plates is provided with at least two port holes being parts of at least one inlet channel and at least one outlet channel, respectively, through the core of plates for at least one of the fluids, a first inlet channel and a first outlet channel being aimed for a first fluid.
• the end plates together have at least two port holes communicating with the said at least one inlet channel and the said at least one outlet channel, respectively.
• the said first inlet channel and the said first outlet channel are in fluid communication with a first set of plate interspaces.
• the said at least one plate heat exchanger is housed in the said at least one tank, a second set of plate interspaces being in fluid communication with the said at least one inner space in the said at least one tank.
• Figure 1 shows, in a perspective view and partly in cross section, a heater and/or cooler according to the invention.
• Figure 2 shows in a front view an alternative mode of execution of a heater and/or cooler according to the invention.
• Figure 3 shows a cross section through the heater and/or cooler along the line A-A in figure 2.
• Figure 4 shows a cross section through the heater and/or cooler along the line B-B in figure 2.
• Figure 5 shows a cross section through the heater and/or cooler along the line C-C in figure 2.
• Figure 6 shows a cross section through the heater and/or cooler along the line D-D in figure 2.
• Figure 7 shows a cross section through the heater and/or cooler along the line E-E in figure 2.
• Figure 8 shows in a view from above the heater and/or cooler in figure 2.
• the heater and/or cooler 1 in figure 1 aims for heating of tap hot water, consists of a tank 2 with an inner space 3 housing two plate heat exchangers 4a, 4b.
• the plate heat exchanger 4a comprises a core of plates with a plurality of heat exchanging plates 5a and two end plates 6a, 7a.
• the plate heat exchanger 4b comprises a core of plates with a plurality of heat exchanging plates 5b and two end plates 6b, 7b.
• Each one of the two front (the two nearer ones in the figure) end plates 6a, 6b shows two connections 8a, 9a and 8b, 9b, respectively, of which at least two connections 8a, 9b extend fluidum tightly through the front wall of the tank 2 while the other two connections 8b, 9a are fluidum tightly connected to one another through an outward pressing (not shown) in the tank 2, which outward pressing has the same function as a U-formed piece of pipe and fluidum tightly connects the connections 8b and 9a in that the plate heat exchangers 4a, 4b seal against the partition wall 14 within the area for the said outward pressing and seals against the tank 2 around the said outward pressing.
• a construction without the outward pressing is thinkable, whereby a U-formed piece of pipe instead extends fluidum tightly through the front (the nearer one in the figure) wall of the tank 2 or through the partition wall 14.
• the plate heat exchangers 4a, 4b then do not need to seal completely against the partition wall 14 or against the tank 2.
• fluidum tightly in this connection is meant that the fluid, in this case hot water or hot steam, which is led through the described connections do not mix with the fluid, in this case water to be heated, which is present within the tank.
• connection 8a leads to an inlet channel 10a and the connection 9a leads from an outlet channel 11 a in the plate heat exchanger 4a.
• connection 8b leads to an inlet channel 10b and the connection 9b from an outlet channel 1 1 b in the plate heat exchanger 4b.
• the inlet channel 10a and the outlet channel 1 1 a are in fluid communication with a first set of plate interspaces in the plate heat exchanger 4a.
• the inlet channel 10b and the outlet channel 11 b are in fluid communication with a first set of plate interspaces in the plate heat exchanger 4b.
• the mentioned first sets of plate interspaces are constituted by every other plate interspace between the heat exchanging plates 5a, 5b in the plate heat exchangers 4a, 4b respectively.
• connection 12, 13 extend through the front wall of the tank 2 in order to make delivery to and removal from the tank, respectively, possible of the fluid which is present there.
• the inner space 3 in the tank 2 is in fluid communication with a second set of plate interspaces in each one of the two plate heat exchangers 4a, 4b.
• all the plate inter- spaces which are not part of the described first sets of plate interspaces according to above are parts of the described second sets of plate interspaces, i.e. also the present interspaces between each one of the end plates 6a, 6b, 7a, 7b and the closest situated heat exchanging plate 5a, 5b, respectively.
• a partition wall 14 divides the inner space 3 into two part spaces which, however, are in fluid communication with each other in the upper part of the tank 2.
• the tank 2 is rectangular and its height is larger than its width or depth.
• the tank 2 is executed of steel panel but any other known suitable material at all may be used.
• the tank 2 is here constituted by four, in using the heater and/or cooler mainly vertical, hollow cylinders 18 which in the upper part of the heater and/or cooler are in fluid communication with a, in using the heater and/or cooler mainly horizontal, hollow cylinder 19 and in the lower part of the heater and/or cooler are in fluid communication with a, in using the heater and/or cooler mainly horizontally extending hollow space 20 housing two plate heat exchangers 4a, 4b.
• the tank 2 basically is constructed by two pressed panels, a front one creating the front side of the heater and/or cooler, see figure 2, and a back one with the corresponding appearance but without connections, the panels must be fluidum tightly joined around the outer edges and mainly fluidum tightly joined between the described hollow cylinders 18, see figure 3. Even if it is more important that the panels are fluidum tightly joined between the two middle hollow cylinders 18 than between the rest of the hollow cylinders 18 still a certain minor leakage may be generally allowed between the cylinders 18.
• the partition wall 14 needs not to be higher than what corresponds to the height of the hollow space 20, see figure 5.
• An outward pressing 21 has the same function as a U- formed piece of pipe and fluidum tightly connects the connections 8b and 9a in that the plate heat exchangers 4a, 4b seal against the partition wall 14 in the area for the said outward pressing 21 and seal against the tank 2 around the said outward pressing 21.
• a construction without any outward pressing 21 is thinkable whereby a U-formed piece of pipe instead extends fluidum tightly through the front (the one nearer in figure 2) wall on the tank 2.
• the plate heat exchangers 4a, 4b then do not have to seal completely against the partition wall 14 or against the tank 2.
• a temperature sensor 22 an aeration nipple 23 and four suspension holes 24.
• Hot water or hot steam enters the heater and/or cooler through the connection 8a, continues into the inlet channel 10a in the plate heat exchanger 4a and is divided within the first set of plate interspaces in this plate heat exchanger, passes through the plate interspaces (the line 15 marks for the sake of clearness one plate interspace only), continues out through the outlet channel 11 a and the connection 9a, continues to and through the connection 8b, continues into the inlet channel 10b in the plate heat exchanger 4b and is divided within the first set of plate interspaces in this plate heat exchanger, passes through the plate interspaces (the line 15 marks for the sake of clearness one plate interspace only), continues out through the outlet channel 11b and exits through the connection 9b, after which the water or the steam returns to the heat source for a new heating.
• the tap water enters the heater and/or cooler through the connection 12 and exits through the connection 13.
• the tap water may freely move within the second sets of plate interspaces. Due to the presence of the partition wall 14 the tap water will preferably move upwards in the right part of the inner space 3 and down- wards in the left part of the same space. Over this main direction for the flow of tap water those water movements which are caused by the heating of the tap water within the plate interspaces are added.
• a suitable control (not shown) a suitable temperature of the tap water which leaves the heater for use as water for showering or the like is held.
• the construction shows the considerate advantage that the previously heated water volume discussed in the previous section is large enough. If the thickness of the plate in the tank is held down the manufacturing costs will become small, which is possible with the mode of execution according to the figures 2-8 since the strength of the construction is sufficiently good in spite of the use of a thin panel. Since every heat exchanging plate in the plate heat exchangers only has two port holes a larger part of the areas of the plates may be used for heat exchange than had otherwise been the case.
• the present corrugation pattern on the plates may also be of a simple kind.
• the plates are often made of steel plate with a thickness of 0,20-0,35 mm, but also other materials may be used such as for example titanium.
• the heat exchanging plates are often thin and the end plates thick, but also other modes of execution may exist. For example it is possible to think of the end plates not being thick but instead being of an appearance totally or partly in accordance with the present heat exchanging plates, however with the difference that port holes only are present where the mounting of connections are desired.
• the present core of plates may be permanently joined in any convenient known way, for instance by brazing, welding or gluing.
• brazing the core of plates together copper braze, nickel braze or any other known braze may be used.
• the heater and/or cooler one or several of the fluids may be something else than water. For example it is possible to think of heat exchange between oil and water. Further on one or several of the fluids may move in another direction through the heater and/or cooler than has been described above. Thus, the flow direction may be reversed for the said first fluid or for the said second fluid or for the said first and second fluids at the same time.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
• Secondary Cells (AREA)
• Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Applications Claiming Priority (3)

Publications (2)

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Family Applications (1)

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• 2000
  • 2000-02-01 SE SE0000336A patent/SE518190C2/sv not_active IP Right Cessation
• 2001
  • 2001-01-30 EP EP01902931A patent/EP1252470B1/de not_active Expired - Lifetime
  • 2001-01-30 AT AT01902931T patent/ATE291204T1/de not_active IP Right Cessation
  • 2001-01-30 AU AU2001230694A patent/AU2001230694A1/en not_active Abandoned
  • 2001-01-30 WO PCT/SE2001/000172 patent/WO2001057452A1/en active IP Right Grant
  • 2001-01-30 DE DE60109418T patent/DE60109418D1/de not_active Expired - Lifetime

Non-Patent Citations (1)

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