EP1553372A2 - Plaque d'échangeur de chaleur et unité d'échange de chaleur - Google Patents

Plaque d'échangeur de chaleur et unité d'échange de chaleur Download PDF

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Publication number
EP1553372A2
EP1553372A2 EP04029481A EP04029481A EP1553372A2 EP 1553372 A2 EP1553372 A2 EP 1553372A2 EP 04029481 A EP04029481 A EP 04029481A EP 04029481 A EP04029481 A EP 04029481A EP 1553372 A2 EP1553372 A2 EP 1553372A2
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EP
European Patent Office
Prior art keywords
heat exchange
protrusions
plate member
plates
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04029481A
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German (de)
English (en)
Inventor
Toyoaki Matsuzaki
Taro Watanabe
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Xenesys Inc
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Xenesys Inc
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Filing date
Publication date
Application filed by Xenesys Inc filed Critical Xenesys Inc
Publication of EP1553372A2 publication Critical patent/EP1553372A2/fr
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • 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

Definitions

  • the present invention relates to a plate for heat exchange, which is formed from a metallic thin plate and combined with the other plates in an aligned state into a heat exchanger, and especially to the heat exchange plate, which enables, in use in combination with the other plates, heat exchange fluids to slow smoothly along the opposite surfaces of the heat exchange plate to make an effective heat exchange, irrespective of a flowing system such as a parallel flowing system in which the heat exchange fluids flow in parallel with each other, a counter-flowing system in which the heat exchange fluids flow in the opposite directions to each other, and a cross flowing system in which the heat exchange fluids flow in perpendicular directions to each other, and relates to a heat exchange unit in which such a heat exchange plate and the other plates are combined.
  • a flowing system such as a parallel flowing system in which the heat exchange fluids flow in parallel with each other, a counter-flowing system in which the heat exchange fluids flow in the opposite directions to each other, and a cross flowing system in which the heat exchange fluids flow in perpendicular directions
  • the plate-type heat exchanger has a structure in which a plurality of plates, i.e., heat transfer members having a plate-shape are placed parallelly one upon another at prescribed intervals so as to form passages, which are separated by means of the respective plates.
  • a high temperature fluid and a low temperature fluid flow alternately in the above-mentioned passages to make heat exchange through the respective plates.
  • Japanese Patent Provisional Publication No. S53-56748 describes an example of such a conventional plate-type heat exchanger.
  • the conventional plate-type heat exchanger gasket members formed of elastic material are placed between the adjacent two plates to make the distance between them constant and define passages for fluid.
  • a high pressure of the heat exchange fluid flowing between the plates may cause deformation of the gasket member, thus disabling an appropriate separation of the fluids from being ensured or leading to an unfavorable variation in distance between the plates.
  • an effective heat exchange may not be carried out, thus causing a problem.
  • the conventional heat exchanger involves a problem that the heat exchange fluids can be utilized only in a pressure range in which the gasket member withstands.
  • the above-described conventional heat exchanger (i.e., the heat exchange unit) has a structure, as described in the above-mentioned publication, that each of the plates has a pattern of irregularity with a shape and arrangement, by which the most preferable heat transfer performance in the flowing direction of the respective heat exchange fluids.
  • fluids for heat exchange used in the heat exchanger utilizing the plates have a relationship based on a parallel flowing system, a counter-flowing system or a cross flowing system.
  • the plate of the conventional heat exchanger has an optimized pattern of irregularity exclusively for any one of the parallel flowing system, the counter-flowing system and the cross flowing system.
  • the heat exchange fluid enters the heat exchanger from a narrow inlet, divergently extends over the wide plane of the plate to flow and then converges into a narrow outlet.
  • Each of the plates has three kinds of patterns of irregularity, i.e., an inflow divergent area, a main heat transfer area and an outflow condensation area, in order to introduce the fluid over every area of the plate.
  • the inflow divergent area and the outflow condensation area having patterns of irregularity in which importance is placed generally on the guiding performance for the fluids, do not provide a sufficient heat transfer performance.
  • the excellent heat transfer performance cannot be provided by these areas, with the result that an effective area utilized for heat transfer is relatively small to the total area of the plate, thus causing waste in space of occupancy and cost.
  • An object of the present invention which was made to solve the above-mentioned problems, is therefore to provide a heat exchange plate, which is provided on it surface with a pattern of irregularity properly formed, has flexibility in use in the flowing system, and permits to ensure a sufficient heat transfer performance relative to fluids, thus providing an excellent heat transfer property, as well as a heat exchange unit in which such a heat exchange plate and the other plates are combined to provide a determined heat transfer property.
  • a plate for heat exchange of the first aspect of the present invention comprises a metallic plate member having a predetermined pattern of irregularity, said plate member being combined with at least one other plate member so as to be in parallel with each other to constitute a heat exchanger, which makes a heat exchange between a heat exchange fluid coming into contact with a surface of said metallic plate member and another heat exchange fluid coming into contact with another surface thereof, said metallic plate member comprising:
  • the heat exchange plate is formed of the metallic plate member having the pattern of irregularity that includes the main protrusions and the intermediate protrusions provided on the plate member.
  • the above-mentioned gap has a dimension corresponding to the pattern of irregularity of the plates, in which a unit of the similar pattern of irregularity is repeated in two directions that are perpendicular to each other, thus providing linear passages extending in the above-mentioned two directions so as to cross each other at right angles. More specifically, each of the linear passages extending in the direction includes expanded areas and throat areas that are placed alternately in the same direction, on the one hand, and the linear passage extending in the perpendicular direction to the above-mentioned direction includes expanded areas and throat areas that are placed alternately in the same perpendicular direction, in the similar manner.
  • the heat exchange fluid ca flow freely in the above-mentioned two directions along the plate, and the constant heat transfer property can be obtained, irrespective of the flowing direction of the heat exchange fluid. It is therefore possible to cause the heat exchange fluid to spread over the entire area of the plate so that such an entire area can serve as an effective heat transfer section, thus increasing remarkably an amount of heat transfer per area and achieving a high performance. Further, the strength of the assembled plates can be improved remarkably by bringing the protrusions of the plate into contact with the corresponding protrusions of the other plate, and it is therefore possible to keep the distance between the adjacent two plates constant, even when there exists a large difference in pressure between the heat exchange fluids, thus enhancing a pressure-resistant property.
  • the plate member may have a shape of any one of a rectangle and a square with side edges, along which said ridgelines of said main protrusions extend in parallel with or perpendicular to said side edges of said plate member.
  • the plate member has the pattern of irregularity in which the ridgelines of the main protrusions extend in parallel with or perpendicular to the side edges of the plate member. Placing the plates having such a pattern of irregularity so that the side edge of the plate coincides with a horizontal direction or vertical direction provides areas between the intermediate protrusions and the foot portions, each of which areas extends obliquely relative to the horizontal or vertical direction. As a result, the heat exchange fluids introduced into the combined plates flows in the oblique direction, and repeats divergence and confluence to spread over every area of the plate. It is therefore possible to cause the heat exchange fluid to spread over the entire area of the plate to facilitate the heat transfer between the heat exchange fluids and improving the heat exchange rate.
  • a plate for heat exchange of the third aspect of the present invention comprises a metallic plate member having a predetermined pattern of irregularity, said plate member being combined with at least one other plate member so as to be in parallel with each other to constitute a heat exchanger, which makes a heat exchange between a heat exchange fluid coming into contact with a surface of said metallic plate member and another heat exchange fluid coming into contact with another surface thereof, said metallic plate member comprising:
  • the heat exchange plate is formed of the metallic plate member having the pattern of irregularity that includes the protrusions and the recess portions provided on the plate member. Combining such a heat exchange plate with the other heat exchange plates so that these plates face each other at the same side and the tops of the protrusions of the plate come into contact with the corresponding tops of the protrusions of the other plate.
  • the above-mentioned gap has a dimension corresponding to the pattern of irregularity of the plates, in which a unit of the similar pattern of irregularity is repeated in two directions that are perpendicular to each other, thus providing linear passages extending in the above-mentioned two directions so as to cross each other at right angles.
  • each of the linear passages extending in the direction includes expanded areas and throat areas that are placed alternately in the same direction, on the one hand, and the linear passage extending in the perpendicular direction to the above-mentioned direction includes expanded areas and throat areas that are placed alternately in the same perpendicular direction, in the similar manner.
  • the heat exchange fluid ca flow freely in the above-mentioned two directions along the plate, and the constant heat transfer property can be obtained, irrespective of the flowing direction of the heat exchange fluid. It is therefore possible to cause the heat exchange fluid to spread over the entire area of the plate so that such an entire area can serve as an effective heat transfer section, thus increasing remarkably an amount of heat transfer per area and achieving a high performance.
  • the strength of the assembled plates can be improved remarkably by bringing the protrusions of the plate into contact with the corresponding protrusions of the other plate, and it is therefore possible to keep the distance between the adjacent two plates constant, even when there exists a large difference in pressure between the heat exchange fluids, thus enhancing a pressure-resistant property.
  • a heat exchange unit of the fourth aspect of the present invention comprises a first set of plates for heat exchange according to any one of the above-mentioned first to third aspects of the present invention, the plate member of each of said plates having a shape of any one of a rectangle and a square with side edges, along which the ridgelines of the main protrusions or the protrusions extend in parallel with or perpendicular to the side edges of the plate member, thus providing the predetermined pattern of irregularity; and a second set of plates having a different predetermined pattern of irregularity, said different predetermined pattern of irregularity being substantially same as said predetermined pattern of irregularity of said first set of plates, but turning at an angle of about 45 degrees relative thereto, said first set of plates and said second set of plates being assembled in variation in combination into a unit.
  • two kinds of plates i.e., the first set of plates and the second set of plates having the ridgelines extending in the different direction from the extending direction of the ridgelines of the first set of plates are assembled in an appropriate combination into a unit, so as to provide combined properties of the different heat exchange properties of the two kinds of plates, for a general structure of the unit. It is therefore possible to adjust the heat exchange properties for the general structure of the unit by combining the two kinds of plates in a different manner, thus providing relatively easily the desired heat exchange properties. Consequently, there can be provided a heat exchanger, which has optimum properties and an excellent heat exchange efficiency in accordance with a kind, state and amount of the heat exchange fluid, as well as an actual use of the heat exchanger.
  • FIG. 1 is a schematic structural view of a heat exchange plate according to the first embodiment of the present invention.
  • FIG. 2 is an enlarged plan view of an essential structure of the heat exchange plate according to the first embodiment of the present invention.
  • FIG. 3(A) is a cross-sectional view cut along the line A-A in FIG. 2
  • FIG. 3(B) is a cross-sectional view cut along the line B-B in FIG. 2
  • FIG. 3(C) is a cross-sectional view cut along the line C-C in FIG. 2.
  • FIG. 4(A) is a cross-sectional view cut along the line D-D in FIG. 2 and FIG.
  • FIGS. 5(A) and 5(B) are descriptive views illustrating gaps formed between a pair of combined heat exchange plates according to the first embodiment of the present invention and the other gaps formed between the other pair of combined heat exchange plates according to the first embodiment of the present invention.
  • the heat exchange plate 1 includes a metallic plate member having a rectangular shape.
  • the plate member which has a pattern of irregularity formed through a press forming, includes a plurality of main protrusions 2 formed on one surface of the plate member and a plurality of intermediate protrusions 3 formed between adjacent two main protrusions 2 on the plate member.
  • Each of the main protrusions 2 has a shape of a quadrangular pyramid with a top, the first pair of opposite side surfaces and the second pair of opposite side surfaces.
  • the first pair of opposite side surfaces faces each other in the first direction.
  • the second pair of opposite side surfaces faces each other in the second direction perpendicular to the first direction.
  • the main protrusions are aligned in the first direction and the second direction by a predetermined distance so that the first pair of opposite surfaces and the second pair of opposite surfaces of one of the main protrusions face corresponding opposite surfaces of adjacent protrusions.
  • Each of the intermediate protrusions 3 has opposite foot portions 3a and a head ridge 3b placed between the foot portions 3a.
  • Each of the foot portions 3a is placed in a lowermost position at which ridgelines 2b of the adjacent two main protrusions 2b intersect each other.
  • the head ridge 3b is placed in a level that is higher than the foot portions 3a and lower than the top 2a of each main protrusion 2, so as to provide a bent roof shape.
  • the main protrusions 2 and the intermediate protrusions 3 form the predetermined pattern of irregularity.
  • the above-mentioned heat exchange plate 1 has a structure in which the direction along which any one of the ridgelines 2b of the main protrusion 2 having the quadrangular pyramid extends, intersects any one of the sides of the plate having the rectangular shape at an angle of 45 degrees.
  • the present invention is not limited only to such a structure, but the direction along which the ridgeline 2b of the main protrusion 2 may intersect the side of the plate at a desired angle to provide a desired pattern of irregularity.
  • the above-mentioned heat exchange plate 1 is combined with the other plate having the same structure so that these plates face each other at the same side and the tops 2a of the main protrusions 2 of the plate 1 come into contact with the corresponding tops 2a of the main protrusions 2 of the other plate, or so that these plates face each other at the same other side and projections between the adjacent two intermediate protrusions 3 of the plate come into contact with corresponding projections of the other plate.
  • Such a combination forms a gap 4, in which a heat exchange fluid can flow, between the adjacent two plates 1, excepting contacting portions thereof, thus providing a heat exchanger in which a heat exchange can be made between the heat exchange fluid coming into contact with the upper surface of the plate 1 and the other heat exchange fluid coming into contact with the lower surface of the plate 1.
  • the intermediate protrusions 3 of the plate 1 which have the lower height than the main protrusions 2, face the corresponding intermediate protrusions 3 of the other plate 1 so as to apart from each other by a predetermined distance
  • the foot portions 3a of the plate 1 which are placed the lowest level, face the corresponding foot portions 3a of the other plate 1 so as to apart from each other by a predetermined larger distance.
  • Areas formed between the intermediate protrusions 3 and areas formed between the foot portions 3a alternately communicate with each other to form linear passages in a reticulation shape.
  • the areas between the foot portions 3a provide orifices, which are larger than orifices provided by the areas between the intermediate protrusions 3, with the result that the respective passage includes expansion zones and reduction zones, which are repeated alternately, to extend linearly, and intersects the other passages so as to communicate therewith (see FIG. 5(A)).
  • the areas between the main protrusions 3 provide orifices, which are larger than orifices provided by the areas between the intermediate protrusions 3, with the result that the respective passage includes expansion zones and reduction zones, which are repeated alternately, to extend linearly in the alignment direction of the main protrusions 2, and intersects the other passages so as to communicate therewith (see FIG. 5(B)).
  • the gaps 4, 5, which are formed between the plates, extend linearly in the aligning directions of the protrusions 2, 3 in correspondence with the respective shapes of the protrusions 2, 3. Even when the two kinds of heat exchange fluids are introduced into the gaps 4, 5, respectively, in accordance with any one of the flowing systems of the parallel flowing system, the counter-flowing system and the cross flowing system, the heat exchange fluids can be subjected to substantially the same conditions. Accordingly, it is possible to cause the heat exchange fluids to pass smoothly through the gaps 4, 5, respectively, to make an effective heat exchange.
  • the heat exchange fluids pass through the passages having the specific shape in which expanded areas and throat areas are placed alternately to make an effective heat exchange relative to the plates, thus improving the heat exchange efficiency between the fluids and eliminating pressure loss in the passages.
  • the strength of the assembled plates can be improved remarkably by bringing the protrusions of the plate into contact with the corresponding protrusions of the other plate, and it is therefore possible to keep the distance between the adjacent two plates constant, thus coping with a case where there exists a large difference in pressure between the heat exchange fluids.
  • the heat exchange plate 1 is formed of the metallic rectangular plate member having the pattern of irregularity that includes the main protrusions 2 and the intermediate protrusions 3 provided on the plate member. Combining such a heat exchange plate 1 with the other heat exchange plates so that these plates face each other at the same side and the tops 2a of the main protrusions 2 of the plate come into contact with the corresponding tops of the main protrusions of the other plate, or so that these plates face each other at the same other side and projections between the adjacent two intermediate protrusions of the plate come into contact with corresponding projections of the other plate, provides a gap 4 between the adjacent two plates.
  • each of the above-mentioned gaps 4, 5 has a dimension corresponding to the pattern of irregularity of the plates, in which a unit of the similar pattern of irregularity is repeated in two directions that are perpendicular to each other, thus providing linear passages extending in the above-mentioned two directions so as to cross each other at right angles. More specifically, each of the linear passages extending in the direction includes expanded areas and throat areas that are placed alternately in the same direction, on the one hand, and the linear passage extending in the perpendicular direction to the above-mentioned direction includes expanded areas and throat areas that are placed alternately in the same perpendicular direction, in the similar manner.
  • the present invention is not limited only to the above-described first embodiment of the present invention in which the heat exchange plates are connected directly to each other by welding, to constitute the heat exchanger.
  • the present invention may be applied to the conventional plate-type heat exchanger in which the plates are assembled into a unit in a state that gasket members formed of elastic material are placed between the plates.
  • FIG. 6 is a schematic structural view of a heat exchange plate according to the second embodiment of the present invention.
  • FIG. 7 is a descriptive view illustrating a flow of a heat exchange fluid in the combined heat exchange plates according to the second embodiment of the present invention.
  • the heat exchange plate 10 according to the second embodiment of the present invention has the pattern of irregularities with the main protrusions 11 and the intermediate protrusions 12 in the same manner as the above-described first embodiment of the present invention.
  • the heat exchange plate 10 according to the second embodiment differs from the first embodiment in that the ridgelines 14 of the main protrusions 11 extend in parallel with or perpendicular to the side edges of the heat exchange plate 10.
  • the main protrusions 11 and the intermediate protrusions 12 project in the gap
  • the intermediate protrusions 12 of the plate which have the lower height than the main protrusions 11
  • the foot portions 15 of the plate which are placed the lowest level, face the corresponding foot portions 15 of the other plate so as to apart from each other by a predetermined larger distance, in the same manner as the above-described first embodiment of the present invention.
  • the intermediate protrusions 12 having the intermediate height and the foot portions 15 having the lowest level are repeated alternately.
  • the heat exchange fluid flows downward in the above-mentioned fluid passages (as shown in FIG. 7 by hollow arrows in solid lines).
  • other fluid passages extending obliquely are provided by recess portions, which are formed directly below the main protrusions 11, and other recess portions, which are formed directly below the intermediate protrusions 12, in combination.
  • the other heat exchange fluid flows upward in these fluid passages (as shown in FIG. 7 by hollow arrows in dotted lines.
  • Each of the heat exchange fluids flows obliquely, while repeating divergence and confluence, to spread smoothly over every area of the heat exchange plate 10. As a result, an effective heat transfer can be made between the different kinds of heat exchange fluids through the heat exchange plates 10.
  • the plate member has the pattern of irregularity in which the ridgelines of the main protrusions 11 extend in parallel with or perpendicular to the side edges of the plate 10. Placing the plates 10 having such a pattern of irregularity so that the side edge of the plate coincides with the horizontal direction or vertical direction provides areas between the intermediate protrusions 12 and the foot portions 15, each of which areas extends obliquely relative to the horizontal or vertical direction. As a result, the heat exchange fluids introduced into the combined plates flows in the oblique direction, and repeats divergence and confluence to spread over every area of the plate 10. It is therefore possible to cause the heat exchange fluid to spread over the entire area of the heat exchange plate 10 to facilitate the heat transfer between the heat exchange fluids and improving the heat exchange rate.
  • the heat exchange plate according to the first and second embodiments of the present invention has a structure in which there is used the pattern of irregularities having the combination of the main protrusions 2, 11, which have the quadrangular pyramid, and the intermediate protrusions 3, 12, which have the bent roof shape having the lower height than the main protrusions 2, 11.
  • the present invention is not limited only to such a structure, but there may be adopted a structure as shown in FIGS. 8 to 10(C), in which the pattern of irregularities is formed by a plurality of protrusions 6 and a plurality of recess portions 7.
  • the protrusions 6, each of which projects in the form of a quadrangular pyramid or a quadrangular truncated pyramid having four ridgelines, are aligned in the two directions, which are perpendicular to each other, so that the protrusions 6 are apart from each other by a predetermined distance and the ridgelines of the protrusions 6 are placed on straight lines corresponding to the above-mentioned two directions.
  • Each of the recess portions 7 is formed, in the form of a quadrangular pyramid or a quadrangular truncated pyramid, between four protrusions so as to be surrounded by the four protrusions 6.
  • the plate is provided on the opposite surfaces with the patterns of irregularities having the inverse projection relationship, in which the plate is provided, on respective areas of its upper surface, with the protrusions 6, and on the corresponding areas of its lower surface, with the recess portions 7.
  • the ridgelines 6a of the protrusions of the plate face those of the corresponding protrusions of the other plate by a predetermined distance
  • the recess portions 7 of the plate face the corresponding portions of the other plate by a predetermined distance within the gap 8.
  • each of the linear passages extending in the direction includes expanded areas and throat areas that are placed alternately in the same direction, on the one hand, and the linear passage extending in the perpendicular direction to the above-mentioned direction includes expanded areas and throat areas that are placed alternately in the same perpendicular direction, in the similar manner (see FIG. 10(c)).
  • the heat exchange fluids can be subjected to substantially the same conditions in the same manner as the first embodiment of the present invention. Accordingly, it is possible to cause the heat exchange fluids to pass smoothly through the gaps 8, respectively, to make an effective heat exchange.
  • the heat exchange plate according to the first and second embodiments of the present invention there is no limitations in the introducing and discharging directions of the two kinds of heat exchange fluids, which flow on the opposite surfaces of the heat exchange plate, respectively, to make heat exchange between these fluids, and in the flowing system for them. These limitations may be given in accordance with the use of the heat exchanger. More specifically, there may be adopted a structure in which inlet and outlet for the first fluid are provided on the opposite edges of the heat exchange plate in its longitudinal direction, respectively, inlet and outlet for the second fluid are provided on the opposite edges of the heat exchange plate in its transverse direction, respectively, and the first fluid flows in the longitudinal direction and the second fluid flows in the transverse direction in accordance with the cross flowing system.
  • inlet and outlet for the first fluid are provided on the opposite edges of the longitudinal side of the heat exchange plate, respectively, inlet and outlet for the second fluid are provided on the opposite edges of the remaining longitudinal side of the heat exchange plate, respectively, and the first fluid flows in the longitudinal direction and the second fluid flows in the longitudinal direction in accordance with the parallel flowing system or the counter-flowing system.
  • inlet and outlet for the first fluid are provided on the opposite edges of the longitudinal side of the heat exchange plate, respectively, inlet and outlet for the second fluid are provided on the same opposite edges, respectively, and the first fluid flows in the longitudinal direction and the second fluid flows in the opposite longitudinal direction in accordance with the counter-flowing system.
  • FIG. 11 is a schematic structural view of the heat exchange unit according to the third embodiment of the present invention.
  • the heat exchange unit 50 has a structure in which a predetermined number of the first heat exchange plates according to the first embodiment and a predetermined number of the second heat exchange plates according to the second embodiment are combined with each other. More specifically, the first heat exchange plates each having the pattern of irregularities in which the ridgelines 2b of the main protrusions 2 intersects any one of the sides of the plate having the rectangular shape at an angle of 45 degrees, and the second heat exchange plates each having the pattern of irregularities in which the ridgelines 14 of the main protrusions 11 are in parallel with or perpendicular to any one of the sides of the plate having the rectangular shape are assembled in the unit in an appropriate combination.
  • the heat exchange plates used in the heat exchange unit 50 are classified into the first group of the heat exchange plates 1, which have the same pattern of irregularities and are placed one upon another, and the second group of the heat exchange plates 10, which have the pattern of irregularities that are the same as each other but different from the first series of the heat exchange plates 1, and are placed one upon another in the same manner.
  • Using the two groups of the heat exchange plates having the different heat exchanging properties due to the different pattern of irregularities, so as to be placed in parallel with each other provides an intermediate property between the first property according to the unit in which only the first group of heat exchange plates is utilized and the second property according to the unit in which only the second group of heat exchange plates is utilized.
  • heat exchange can be made in an appropriate manner, thus improving the heat exchange efficiency.
  • two kinds of plates i.e., the first set of plates 1 and the second set of plates 10 having the ridgelines extending in the different direction from the extending direction of the ridgelines of the first set of plates are assembled in an appropriate combination into a unit, so as to provide combined properties of the different heat exchange properties of the two kinds of plates. It is therefore possible to provide the heat exchanger having the effective heat exchanging properties as desired, which cannot be obtained by combination of the single kind of plates.
  • the two kinds of heat exchange plates 1, 10 are assembled into the unit so that the first group of plates having the same pattern of irregularities and the second group of plates having the same pattern of irregularities are combined in parallel with each other.
  • the present invention is not limited only to such a structure.
  • a plurality of kinds of plates having the different pattern of irregularities for example, two kinds of plates, i.e., the heat exchange plates 1 having the pattern of irregularities as shown in FIG. 1 and the heat exchange plates 10 having the pattern of irregularities as shown in FIG. 6 may be placed alternately one upon another. Alternatively, there may be placed, between a plurality of groups of plate having the same pattern of irregularities, one or more plate having the different pattern of irregularities.
  • Combination of the plates can be varied strictly in number of the plates in the respective group in this manner. It is therefore possible to adjust appropriately the arrangement of the various kinds of plates having the different heat exchanging properties due to the different pattern of irregularities, to obtain a desired heat exchange properties for the general structure of the unit, thus providing a heat exchanger, which has optimum properties and an excellent heat exchange efficiency in accordance with a kind, state and amount of the heat exchange fluid, as well as an actual use of the heat exchanger.

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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)
EP04029481A 2004-01-09 2004-12-13 Plaque d'échangeur de chaleur et unité d'échange de chaleur Withdrawn EP1553372A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004003817 2004-01-09
JP2004003817 2004-01-09

Publications (1)

Publication Number Publication Date
EP1553372A2 true EP1553372A2 (fr) 2005-07-13

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US (1) US20050150645A1 (fr)
EP (1) EP1553372A2 (fr)
CN (1) CN1637376A (fr)
TW (1) TW200530553A (fr)

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SE528886C2 (sv) * 2005-08-26 2007-03-06 Swep Int Ab Ändplatta
FR2902183A1 (fr) * 2006-06-13 2007-12-14 Technologies De L Echange Ther Echangeurs thermiques a ailettes metalliques creuses
CN101995185A (zh) * 2010-11-02 2011-03-30 三花丹佛斯（杭州）微通道换热器有限公司 用于换热器的翅片以及具有该翅片的换热器
EP2719985B1 (fr) * 2012-10-09 2015-08-26 Danfoss Silicon Power GmbH Module de distribution de flux avec plaque de couverture à motifs
CN104533538A (zh) * 2014-12-15 2015-04-22 厦门大学 一种带肋结构的换热流道壁
CN110230935B (zh) * 2019-06-12 2021-05-04 南京工业大学 一种柔性结构的强热适应性板翅式换热器芯体
CN110657699A (zh) * 2019-10-09 2020-01-07 山东北辰机电设备股份有限公司 一种适用于污浊腐蚀环境下的换热器板片

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