US20110017436A1 - Plate type heat exchanger - Google Patents
Plate type heat exchanger Download PDFInfo
- Publication number
- US20110017436A1 US20110017436A1 US12/506,540 US50654009A US2011017436A1 US 20110017436 A1 US20110017436 A1 US 20110017436A1 US 50654009 A US50654009 A US 50654009A US 2011017436 A1 US2011017436 A1 US 2011017436A1
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- US
- United States
- Prior art keywords
- heat transfer
- flanges
- plates
- heat exchanger
- heat
- 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.)
- Abandoned
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Classifications
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- 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
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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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
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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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing means
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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
- F28F2240/00—Spacing means
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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
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between elements
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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
- F28F2275/00—Fastening; Joining
- F28F2275/06—Fastening; Joining by welding
Definitions
- the present invention relates to a plate type heat exchanger, and more particularly, to a plate type heat exchanger, capable of simply and rapidly fabricating a heat transfer assembly to improve workability by bending a pair of heat transfer plates, by welding a pair of heat transfer plates into a heat transfer cell, and by stacking and welding the heat transfer cells in multiple layers, preventing the flaw of welding caused by downward sagging of the heat transfer plate when the welding is performed, reducing the total number of constituent parts and thus production costs, and improving assemblability.
- heat exchangers are fluid-to-fluid heat recovery apparatuses that recover heat included in gases discharged to the outside in industrial facilities such as air-conditioning facilities and then supply the recovered heat to productive facilities or interiors of buildings.
- heat exchangers are classified into a plate type heat exchanger, heat pipe type heat exchanger, disc type heat exchanger, etc. according to the type of a heat exchange module that is an internal core part.
- the plate type heat exchanger is designed to perform heat transfer (heat exchange) between a high-temperature fluid and a low-temperature fluid without a physical contact.
- the plate type heat exchanger recovers heat by arranging a plurality of heat transfer plates in parallel to each other at predetermined intervals, adopting a gap between every two neighboring heat transfer plates as a channel through which a fluid flows in one direction, and alternately supplying a high-temperature fluid and a low-temperature fluid to the respective channels so as to perform heat transfer (heat exchange) through the respective heat transfer plates.
- a rigid parallelepiped shaped core is installed in a frame, and the core is formed of a plurality of thin parallel plates that define alternating passages for two different fluid flows.
- Each of the thin parallel plates is connected to its adjacent plate by parallel bars along side edges thereof, wherein each bar is of stronger construction than each plate.
- the frame includes a pair of spaced parallel plates and transverse structural connectors. Seal means are provided both between vertical corners and transverse corners of the core and the adjacent surfaces of the frame defined by the pair of plates and by the structural connectors.
- the plurality of thin parallel plates constituting the core are welded so as to define the fluid passages, i.e. gas flow passages, crossing each other by the horizontal bars. For this reason, when a worker individually welds the parallel plates, a high precision of welding is required, which increases a working burden of the worker. Further, when the parallel plates are disposed and welded in a horizontal direction, the parallel plates sagging downwards due to their weights cause the flaw of welding.
- Embodiments of the present invention provide a plate type heat exchanger capable of simply and rapidly fabricating a heat transfer assembly to improve workability by bending a pair of heat transfer plates, by welding the pair of heat transfer plates into a heat transfer cell, and by stacking and welding the heat transfer cells in multiple layers, of preventing the flaw of welding caused by downward sagging of the heat transfer plate when the welding is performed, minimizing turbulence at an inlet into which a fluid flows to improve heat exchange efficiency, reducing the total number of constituent parts and thus production costs, and improving assemblability.
- the heat exchanger includes a heat transfer assembly including a plurality of heat transfer cells stacked in multiple layers, each of the heat transfer cells including a pair of heat transfer plates, wherein each of the heat transfer plates has a pair of first flanges bent from a heat transfer area shaped of a quadrilateral panel in one direction and a pair of second flanges bent from the heat transfer area in a direction opposite the bending direction of the first flanges; wherein each of the heat transfer cells has weld lines formed along one of the first and second flanges of the heat transfer plates disposed so as to be opposite to each other in a minor image, an internal passage between the weld lines, and external recesses outside the heat transfer areas so as to intersect with the internal passage at a right angle; wherein the heat transfer assembly has first fluid passages, each of which is formed by the internal passage, and second fluid passages between the heat transfer cells to intersect with the first fluid passage at a right angle so as to exchange heat with the first fluid passages
- each of the heat transfer cells may have the weld lines along the first flanges of the heat transfer plates that are opposite to and in contact with each other in the minor image, and the internal passage formed between the heat transfer plates that are opposite to each other so as to be parallel to the weld lines and having an inlet and an outlet defined by the second flanges that are opposite to and spaced apart from each other.
- each of the heat transfer cells may have first slopes that are inclined toward the weld lines among the first flanges, the first or second heat transfer area, and the second flanges at a predetermined angle, and second slopes that are inclined toward the inlet and the outlet of the internal passage between the second flanges and the first or second heat transfer area at a predetermined angle so as to define the external recesses.
- the heat transfer assembly may be configured so that the second flanges of the neighboring heat transfer cells which intersect with the internal passages at the right angle are in surface contact with each other, and that the first flanges of the neighboring heat transfer cells are spaced apart from each other, and includes end plates contacting the second flanges and the weld lines at opposite left-hand and right-hand ends of the first flanges.
- each of the heat transfer cells may have the weld lines along the second flanges of the heat transfer plates that are opposite to and in contact with each other in the mirror image, and the internal passage formed between the heat transfer plates that are opposite to each other so as to be parallel to the weld lines and having an inlet and an outlet defined by the first flanges that are opposite to and spaced apart from each other.
- each of the heat transfer cells may have first slopes that are inclined toward the inlet and the outlet of the internal passage among the first flanges, the first or second heat transfer area, and the second flanges at a predetermined angle at a predetermined angle so as to define the external recesses, second slopes that are inclined toward the weld lines between the second flanges and the heat transfer area at a predetermined angle, and end plates contacting the second flanges and the weld lines at opposite left-hand and right-hand ends of the first flanges.
- the heat transfer assembly may be configured so that the second flanges of the neighboring heat transfer cells which intersect with the internal passages at the right angle are in surface contact with each other, and that the first flanges of the neighboring heat transfer cells are spaced apart from each other, and is sealed at opposite left-hand and right-hand ends of the second flanges by the end plates.
- one of the heat transfer plates may include a spacer set, a height of which is equal to or less than an interval between the neighboring heat transfer areas.
- the spacer set may include a plurality of stud spacers, a lower end of each of which is welded to one of the heat transfer areas so as to intersect with one of the heat transfer areas at a right angle.
- the spacer set may include a plurality of strip spacers, a lower end of each of which is welded to one of the heat transfer areas so as to intersect with one of the heat transfer areas at a right angle, and each of which extends in a flow direction of the fluid at a predetermined length.
- the spacer set may include a plurality of stud spacers, a lower end of each of which is welded to one of the heat transfer area so as to intersect with one of the heat transfer areas at a right angle, and a plurality of strip spacers, a lower end of each of which is welded to one of the heat transfer areas so as to intersect with one of the heat transfer areas at a right angle and each of which extends in a flow direction of the fluid at a predetermined length.
- the sealing panels may include sealing plates facing the outer faces of the heat transfer assembly, reinforcing plates installed on outer surfaces of the sealing plates in a lattice shape, and fastening holes formed in corners of the sealing plates and fastened to ends of the support beams by fastening members.
- each of the sealing plates may include a glass coating layer on an inner surface thereof.
- the sealing panels and the support beams may be coupled with a plurality of joint quadrilateral frames so as to be disposed at inlets and outlets of the first and second fluid passages.
- the first elastic members may include plates having a predetermined length, bonded and fixed to inner surfaces of the sealing panels in contact with leading ends thereof and to the outer face of the heat transfer assembly in contact with trailing ends thereof, and having a contractile section having a curved cross section between the leading and trailing ends thereof.
- each of the second elastic members may be an elastic plate, which has a predetermined length, which is bonded and fixed to a first lateral face of each of the support beams in contact with a leading end thereof and to the outer face of the heat transfer assembly in contact with a trailing end thereof, and which has a corrugated section between the leading and trailing ends thereof.
- the elastic support may further include stoppers, each of which has a predetermined length, is fixed to a second lateral face of each of the support beams, which is perpendicular to the first lateral face of each of the support beams on which the second elastic members are installed, and is opposite to an outer edge of the heat transfer assembly.
- the heat transfer assembly may include planar cover members spaced apart from and parallel to the heat transfer plates at a predetermined interval, so as to define another fluid passage between the heat transfer plates, through which, of the first and second fluids having different temperatures, one having a relatively low temperature flows.
- the cover members may be installed on corners of the heat transfer plate where the inlet of the fluid passage through which the fluid having the relatively low temperature flows encounters with the outlet of the fluid passage through which the fluid having a relatively high temperature flows in a triangular shape.
- the heat transfer cell is fabricated by welding a pair of heat transfer plates disposed so as to be opposite to each other in a mirror image to thereby form weld lines along one of first and second flanges of the heat transfer plates disposed so as to be opposite to each other in a mirror image, an internal passage between the weld lines, and external recesses outside the heat transfer areas so as to intersect with the internal passage at a right angle.
- the heat transfer assembly is fabricated by stacking a plurality of heat transfer cells in multiple layers to thereby form first fluid passages, each of which serves as the internal passage, and second fluid passages between the heat transfer cells so as to intersect with the first fluid passages at a right angle and to exchange heat with the first fluid passages.
- the elastic support is installed between the sealing panels facing opposite outer faces of the heat transfer assembly and the heat transfer assembly and between the support beams provided between the sealing panels and the heat transfer assembly, thereby absorbing thermal expansion of the heat transfer assembly and preventing fluids from leaking out.
- the heat exchanger can simply and rapidly fabricated, prevent the flaw of welding when welding is performed, reducing a burden of the welding to improve workability, reducing the total number of constituent parts and thus production costs, and improving assemblability.
- the heat exchanger can minimize turbulence and resistance of the fluid occurring at the inlets of the fluid passages of the heat transfer assembly, and thereby stably maintain contact between the fluid and the heat transfer plate as the heat transfer member to improve heat exchange efficiency.
- FIG. 1 is a perspective view illustrating a heat exchanger according to an embodiment of the present invention
- FIG. 2 is an exploded perspective view illustrating a heat exchanger according to an embodiment of the present invention
- FIGS. 3A through 3C illustrate a heat transfer cell that is applied to a heat exchanger according to a first embodiment of the present invention, wherein FIG. 3A is an entire perspective view, FIG. 3B is a cross-sectional view taken along line 3 b - 3 b′ of FIG. 3A , and FIG. 3C is a cross-sectional view taken along line 3 c - 3 c′ of FIG. 3A ;
- FIGS. 4A through 4D illustrate a process of fabricating a heat transfer cell for a heat exchanger according to an embodiment of the present invention
- FIGS. 5A through 5C illustrate another example of a heat transfer cell for a heat exchanger according to a second embodiment of the present invention, wherein FIG. 5A is an entire perspective view, FIG. 5B is a cross-sectional view taken along line 5 b - 5 b′ of FIG. 5A , and FIG. 5B is a cross-sectional view taken along line 5 c - 5 c′ of FIG. 5A ;
- FIGS. 6A through 6D illustrate a process of fabricating another example of a heat transfer cell for a heat exchanger according to an embodiment of the present invention
- FIG. 7 is a perspective view illustrating a heat transfer assembly for a heat exchanger according to an embodiment of the present invention.
- FIG. 8 is a perspective view illustrating another example of a heat transfer assembly for a heat exchanger according to an embodiment of the present invention.
- FIGS. 9A through 9E are perspective views illustrating a set of spacers installed on a heat transfer plate of a heat transfer cell for a heat exchanger according to an embodiment of the present invention, wherein FIGS. 9A and 9B are for a stud type, FIGS. 9C and 9D are for a strip type, and FIGS. 9E and 9F are for a mixed type;
- FIGS. 10A and 10B illustrate a framework installed on a heat exchanger according to an embodiment of the present invention, wherein FIG. 10A is a perspective view illustrating sealing panels, and FIG. 10B is a perspective view illustrating a support beam;
- FIG. 11 is a cross-sectional view illustrating a heat exchanger according to first and second embodiments of the present invention, wherein the heat exchanger is cut in a direction of a first fluid passage;
- FIG. 12 illustrates an elastic support for a heat exchanger according to an embodiment of the present invention, wherein FIG. 12A is for a first elastic member of the elastic support, and FIG. 12B is for a second elastic member of the elastic support.
- FIG. 1 is a perspective view illustrating a heat exchanger according to an embodiment of the present invention
- FIG. 2 is an exploded perspective view illustrating a heat exchanger according to an embodiment of the present invention.
- the heat exchanger 200 includes a hexahedral heat transfer assembly 100 made up of a plurality of heat transfer cells 130 , each of which includes a pair of heat transfer plates 110 and 120 , a framework 140 , and an elastic support 150 .
- a first fluid passage f 1 refers to a passage through which a first fluid flows from an upper side to a lower side of the heat exchanger, particularly, vertically flows through an internal passage of each heat transfer cell 130 of the hexahedral heat transfer assembly 100 .
- a second fluid passage f 2 refers to a passage through which a second fluid flows from a left-hand side to a right-hand side of the heat exchanger, particularly, horizontally flows through an internal passage between every two neighboring heat transfer cells 130 of the hexahedral heat transfer assembly 100 .
- the flows of the first and second fluid are not limited to this configuration. Thus, the flows of the first and second fluids may be opposite to each other.
- one of the first and second fluid includes air having an atmospheric temperature
- the other fluid includes waste gas, exhaust gas, or the like that is discharged from any industrial field and has a relatively higher temperature
- FIGS. 3A through 3C illustrate a heat transfer cell that is applied to a heat exchanger according to a first embodiment of the present invention, wherein FIG. 3A is an entire perspective view, FIG. 3B is a cross-sectional view taken along line 3 b - 3 b′ of FIG. 3A , and FIG. 3C is a cross-sectional view taken along line 3 c - 3 c′ of FIG. 3A .
- the heat transfer cell 130 is formed by welding a pair of heat transfer plates 110 and 120 , and thus has an internal passage, through which a fluid flows in one direction, defined by the welded heat transfer plates 110 and 120 , which face each other in a mirror image.
- the heat transfer plate 110 or 120 of the heat transfer cell 130 includes a heat transfer area 111 or 121 shaped of a substantially quadrilateral panel, a pair of first flanges 112 and 113 , or 122 and 123 bent from opposite upper and lower edges of the heat transfer area 111 or 121 in one direction when viewed from FIG. 1 , and a pair of second flanges 114 and 115 , or 124 and 125 bent from opposite left-hand and right-hand edges of the heat transfer area 111 or 121 in the direction opposite the bending direction of the first flanges 112 and 113 , or 122 and 123 .
- the heat transfer cell 130 includes weld lines S 1 along the first flanges 112 and 122 , and 113 and 123 that are opposite to and in contact with each other on the upper and lower sides when viewed from FIG. 1 , the internal passage P 1 defined between the heat transfer areas 111 and 121 parallel to the weld lines S 1 .
- An inlet and an outlet of the internal passage P 1 are formed by the second flanges 114 and 124 , and 115 and 125 that are opposite to and spaced apart from each other on opposite left-hand and right-hand sides when viewed from FIG. 1 .
- first flanges 112 and 113 , and 122 and 123 and the second flanges 114 and 115 , and 124 and 125 are bent from the heat transfer areas 111 and 121 perpendicular to each other.
- First slopes 116 and 117 , or 126 and 127 are inclined toward the weld lines S 1 among the first flanges 112 and 113 , or 122 and 123 , the heat transfer area 111 or 121 , and the second flanges 114 and 115 , or 124 and 125 at a predetermined angle, and thus smoothly converts a flow of the fluid so as to inhibit the fluid, which flows in a direction perpendicular to the weld lines S 1 , from generating vortex at an inlet of each external passage.
- second slopes 118 and 119 , or 128 and 129 are inclined toward the inlet 131 and the outlet 132 of the internal passage P 1 between the second flanges 114 and 115 , or 124 and 125 and the heat transfer area 111 or 121 at a predetermined angle so as to define the external recesses 101 and 102 between the second flanges 114 and 115 , or 124 and 125 with a predetermined width.
- the weld lines Si are formed by seam welding faying surfaces of the first flanges 112 and 122 , and 133 and 123 of the heat transfer plates 110 and 120 facing each other in a mirror image, and the inlet 131 and the outlet 132 of the internal passage P 1 are formed by the second flanges 114 and 124 , and 115 and 125 which are opposite to and spaced apart from each other.
- FIGS. 4A through 4D illustrate a process of fabricating a heat transfer cell for a heat exchanger according to an embodiment of the present invention.
- FIG. 4A there is prepared a plate T, which is shaped of a quadrilateral panel.
- the plate T is placed on a press (not shown), and then is subjected to external force through a die. Thereby, as illustrated in FIG. 4A .
- the plate T is formed into a heat transfer plate 110 or 120 , which has a heat transfer area 111 or 121 shaped of a quadrilateral panel, a pair of first flanges 112 and 113 , or 122 and 123 bent from opposite upper and lower edges of the heat transfer area 111 or 121 in one direction, and a pair of second flanges 114 and 115 , or 124 and 125 bent from opposite left-hand and right-hand edges of the heat transfer area 111 or 121 in the direction that is perpendicular and opposite to the bending direction of the first flanges 112 and 113 , or 122 and 123 .
- the heat transfer plates 110 and 120 are disposed in a mirror image such that a distance between the first flanges 112 and 113 , or 122 and 123 is relatively shorter than that between the second flanges 114 and 115 , or 124 and 125 .
- the first flanges 112 and 122 , and 133 and 123 come into surface contact with each other, and then are welded along the outer ends thereof.
- the outer ends of the first flanges 112 and 122 , and 133 and 123 have weld lines S 1 that run parallel to the internal passage P 1 when viewed from FIG. 4D .
- the heat transfer cell 130 is fabricated.
- FIGS. 5A through 5C illustrates another example of a heat transfer cell for a heat exchanger according to a second embodiment of the present invention, wherein FIG. 5A is an entire perspective view, FIG. 5B is a cross-sectional view taken along line 5 b - 5 b′ of FIG. 5A , and FIG. 5C is a cross-sectional view taken along line 5 c - 5 c′ of FIG. 5A .
- the heat transfer cell 130 a made up of a pair of heat transfer plates 110 a and 120 a has an internal passage P 2 , through which a fluid flows in one direction, defined by welding the heat transfer plates 110 a and 120 a , which are opposite to each other in a mirror image.
- the heat transfer plate 110 a or 120 a of the heat transfer cell 130 a includes a heat transfer area 111 a or 121 a shaped of a quadrilateral panel, a pair of first flanges 112 a and 113 a , or 122 a and 123 a bent from opposite upper and lower edges of the heat transfer area 111 a or 121 a in one direction, and a pair of second flanges 114 a and 115 a , or 124 a and 125 a bent from opposite left-hand and right-hand edges of the heat transfer area 111 a or 121 a in the direction that is perpendicular and opposite to the bending direction of the first flanges 112 a and 113 a , or 122 a and 123 a .
- the heat transfer cell 130 a includes weld lines S 1 along the first flanges 112 a and 122 a , and 113 a and 123 a that are opposite to and in contact with each other on the left-hand and right-hand sides of FIG. 5A , the internal passage P 2 defined between the heat transfer areas 111 a and 121 a parallel to the weld lines S 1 .
- An inlet and an outlet of the internal passage P 2 are formed by the first flanges 112 a and 122 a , and 113 a and 123 a that are opposite to and spaced apart from each other on upper and lower sides of FIG. 5A .
- first flanges 112 a and 113 a , and 122 a and 123 a and the second flanges 114 a and 115 a , and 124 a and 125 a are bent from the heat transfer areas 111 a and 121 a in the direction that is perpendicular and opposite to each other.
- First slopes 116 a and 117 a , or 126 a and 127 a are inclined toward an inlet and an outlet of the internal passage P 2 among the first flanges 112 a and 113 a , or 122 a and 123 a , the heat transfer area 111 a or 121 a , and the second flanges 114 a and 115 a , or 124 a and 125 a at a predetermined angle so as to form external recesses 101 a and 102 a between the first flanges 112 a and 113 a , and 122 a and 123 a with a predetermined width.
- second slopes 118 a and 119 a , or 128 a and 129 a are inclined toward the weld lines S 2 between the second flanges 114 a and 115 a , or 124 a and 125 a and the heat transfer area 111 a or 121 a at a predetermined angle.
- the weld lines S 2 are formed by seam welding faying surfaces of the first flanges 114 a and 124 a , and 115 a and 125 a of the heat transfer plates 110 a and 120 a facing each other in a mirror image, and the inlet and the outlet of the internal passage P 2 are formed by the first flanges 112 a and 122 a , or 113 a and 123 a which are opposite to and spaced apart from each other.
- FIGS. 6A through 6D illustrate a process of fabricating another example of a heat transfer cell for a heat exchanger according to an embodiment of the present invention.
- a plate T shaped of a quadrilateral panel is prepared.
- the plate T is placed on a press (not shown), and then is subjected to external force through a die.
- the plate T is formed into a heat transfer plate 110 a or 120 a , which has a heat transfer area 111 a or 121 a shaped of a quadrilateral panel, a pair of first flanges 112 a and 113 a , or 122 a and 123 a bent from opposite upper and lower edges of the heat transfer area 111 a or 121 a in one direction, and a pair of second flanges 114 a and 115 a , or 124 a and 125 a bent from opposite left-hand and right-hand edges of the heat transfer area 111 a or 121 a in the direction that is perpendicular and opposite to the bending direction of the first flanges 112 a and 113
- the heat transfer plates 110 a and 120 a are disposed in a mirror image such that a distance between the first flanges 112 a and 113 a , or 122 a and 123 a is relatively longer than that between the second flanges 114 a and 115 a , or 124 a and 125 a.
- the second flanges 114 a and 124 a , and 115 a and 125 a come into surface contact with each other, and then are welded along the outer ends thereof.
- the outer ends of the second flanges 114 a and 124 a , and 115 a and 125 a form the weld lines S 2 that run perpendicular to an internal passage P 2 when viewed from FIG. 6 .
- the heat transfer cell 130 a is fabricated.
- FIG. 7 is a perspective view illustrating a heat transfer assembly for a heat exchanger according to an embodiment of the present invention.
- the heat transfer assembly 100 is a hexahedral rigid structure in which a plurality of heat transfer cells 130 , each of which is a unit member fabricated by welding a pair of heat transfer plates 110 and 120 disposed in a minor image, are stacked.
- This heat transfer assembly 100 is designed to form a passage having a predetermined size such that a fluid can freely flow between two neighboring ones of the heat transfer cells 130 , thereby forming a first fluid passage F 1 through which a first fluid flows one side to the other side.
- a second fluid passage F 2 intersects with the first fluid passage F 1 , which is formed as an internal passage P 1 in each heat transfer cell 130 , at a right angle.
- a second fluid flowing through the second fluid passage F 2 flows through the heat transfer assembly 100 without being mixed with the first fluid, so that the first and second fluids having different temperatures can exchange heat with each other.
- the second flanges 114 and 124 , and 115 and 125 intersecting with the internal passage P 1 of each heat transfer cell 130 at a right angle are in surface contact with and are welded to the second flanges 114 and 124 , and 115 and 125 of the neighboring heat transfer cell 130 , whereas the first flanges 112 and 122 , and 113 and 123 are spaced apart from the first flanges 112 and 122 , and 113 and 123 of the neighboring heat transfer cell 130 .
- first flanges 112 and 122 , and 113 and 123 are provided with end plates 103 and 104 at left-hand and right-hand ends thereof which connect the first flanges 112 and 122 , and 113 and 123 of the neighboring heat transfer cell 130 and are in contact with the weld lines S 1 .
- an inlet and an outlet of the second fluid passage F 2 are defined between the heat transfer cell 130 and its neighboring heat transfer cell 130 .
- FIG. 8 is a perspective view illustrating another example of a heat transfer assembly for a heat exchanger according to an embodiment of the present invention.
- the heat transfer assembly 100 a is a hexahedral rigid structure in which a plurality of heat transfer cells 130 a , each of which is a unit member fabricated by welding a pair of heat transfer plates 110 a and 120 a disposed in a mirror image, are stacked.
- This heat transfer assembly 100 a is designed to form a passage having a predetermined size such that a fluid can freely flow between two neighboring ones of the heat transfer cells 130 a , thereby forming a first fluid passage F 1 through which a first fluid flows one side to the other side.
- the first fluid passage F 1 intersects with a second fluid passage F 2 , which is formed as an internal passage P 2 in each heat transfer cell 130 a , at a right angle.
- the first fluid flowing through the first fluid passage F 1 flows through the heat transfer assembly 100 a without being mixed with a second fluid, so that the first and second fluids having different temperatures can exchange heat with each other.
- the first flanges 112 a and 122 a , and 113 a and 123 a intersecting with the internal passage P 1 of each heat transfer cell 130 a at a right angle are in surface contact with and are welded to the first flanges 112 a and 122 a , and 113 a and 123 a of the neighboring heat transfer cell 130 a , whereas the second flanges 114 a and 124 a , and 115 a and 125 a are spaced apart from the second flanges 114 a and 124 a , and 115 a and 125 a of the neighboring heat transfer cell 100 a .
- the second flanges 114 a and 124 a , and 115 a and 125 a are sealed by end plates 103 a and 104 a contacting the weld lines S 2 at left-hand and right-hand ends thereof.
- FIGS. 9A through 9F are perspective views illustrating a set of spacers installed on a heat transfer plate of a heat transfer cell for a heat exchanger according to an embodiment of the present invention, wherein FIGS. 9A and 9B are for a stud type, FIGS. 9C and 9D are for a strip type, and FIGS. 9E and 9F are for a mixed type.
- the heat transfer plate 110 or 120 , or 110 a or 120 a includes a spacer set 160 , which has a height equal to or less than an interval between the two neighboring heat transfer areas 111 and 121 , or 111 a and 121 a so as to be able to constantly maintain an interval from the heat transfer area 121 or 111 , or 121 a or 111 a of the neighboring heat transfer plates 120 or 110 , or 120 a or 110 a.
- the heat transfer plates 110 and 120 , or 110 a and 120 a disposed in a horizontal direction are subjected to sagging at the central regions thereof due to their own weights in the process of fabricating the heat transfer assembly 100 or 100 a by stacking the heat transfer cells 130 or 130 a in a vertical direction and by welding the flanges of the heat transfer cells 130 or 130 a which are in contact with each other.
- the spacer set 160 is contacted with and supported on heat transfer area 121 or 111 , or 121 a or 111 a of the neighboring heat transfer plates 120 or 110 , or 120 a or 110 a at an upper end thereof, thereby preventing excessive sagging of the heat transfer plate and maintaining the interval between the heat transfer areas of the heat transfer plates 110 and 120 , or 110 a and 120 a as a design value.
- the spacer set 160 increases an internal surface area of the heat transfer area, so that it can increase heat exchange efficiency between first and second fluids.
- the process of welding the flanges of the heat transfer cells 130 or 130 a staked in a vertical direction in order to assemble the heat transfer assembly 100 or 100 a can be more precisely performed without a flaw.
- the spacer set 160 a includes a plurality of stud spacers 163 , a lower end of each of which is welded to the heat transfer area 111 or 111 a , or 121 or 121 a so as to intersect with the heat transfer area 111 or 111 a , or 121 or 121 a at a right angle.
- Each stud spacer 163 includes a weld strap 161 fixed to the heat transfer area 111 or 111 a , or 121 or 121 a by spot welding, and a support stud 162 vertically extending from the top of the weld strap 161 .
- the support stud 162 is shown to have, but not limited to, a cylindrical shape.
- the support stud 162 may have an oval cross section or an angled cross section.
- the spacer set 160 b includes a plurality of strip spacers 164 , a lower end of each of which is welded to the heat transfer area 111 or 111 a , or 121 or 121 a so as to intersect with the heat transfer area 111 or 111 a , or 121 or 121 a at a right angle, and each of which extends in a flow direction of the fluid at a predetermined length.
- the spacer set 160 c includes a plurality of stud spacers 163 , a lower end of each of which is welded to the heat transfer area 111 or 111 a , or 121 or 121 a so as to intersect with the heat transfer area 111 or 111 a , or 121 or 121 a at a right angle, and a plurality of strip spacers 164 , a lower end of each of which is welded to the heat transfer area 111 or 111 a , or 121 or 121 a so as to intersect with the heat transfer area 111 or 111 a , or 121 or 121 a at a right angle, and each of which extends in a flow direction of the fluid at a predetermined length, wherein the stud spacers 163 are mixed with the strip spacers 164 .
- the stud spacers 163 which are selectively installed on either an upper surface, i.e. a front surface, or a lower surface, i.e. a rear surface, of the heat transfer area 111 or 111 a , or 121 or 121 a when viewed from the figure, are arranged to have, but not limited to, a matrix array in order to constantly maintain spacing between the neighboring stud spacers.
- the heat transfer cells 130 made up of the heat transfer plates 110 and 120 , or 110 a and 120 a are horizontally disposed and welded to each other.
- the interval between the neighboring stud spacers 163 on the central region of each heat transfer area may be set to be narrower than that on an edge region of each heat transfer area.
- interval between the neighboring strip spacers 164 is, in one embodiment, set in such a manner that the central region of each heat transfer area is narrower than the edge region of each heat transfer area.
- the framework 140 includes a pair of sealing panels 141 and 142 disposed so as to face opposite outer faces of the heat transfer assembly 100 or 100 a , and a plurality of support beams 143 , 144 , 145 and 146 connected between the sealing panels 141 and 142 .
- the sealing panels 141 and 142 include quadrilateral sealing plates 141 a and 142 a facing the opposite outer faces of the heat transfer assembly 100 or 100 a , reinforcing plates 141 b and 142 b installed on outer surfaces of the sealing plates 141 a and 142 a in a lattice shape, and fastening holes 141 c and 142 c through which ends of the support beams 143 , 144 , 145 and 146 disposed between corners of the sealing plates 141 a and 142 a are fastened to the sealing plates 141 a and 142 a using fastening members 141 e and 142 e.
- the sealing plates 141 a and 142 a facing the heat transfer assembly 100 or 100 a are provided with glass coating layers 141 d and 142 d on inner surfaces thereof which have a predetermined thickness so as to inhibit thermal deformation and corrosion to the maximum extent.
- the support beams 143 , 144 , 145 and 146 are support members that connect and support the sealing panels 141 and 142 disposed so as to face the heat transfer assembly 100 or 100 a with the heat transfer assembly 100 or 100 a in between and that have a predetermined length.
- each of the support beams 143 , 144 , 145 and 146 is provided with fastening holes 147 a and 147 b in opposite ends thereof through which the fastening members 141 e and 142 e are fastened corresponding to the fastening holes 141 c and 142 c formed in corners of the sealing panels 141 and 142 .
- Each of the support beams 143 , 144 , 145 and 146 is provided with reinforcing ribs 148 at regular intervals in a lengthwise direction.
- sealing panels 141 and 142 and the support beams 143 , 144 , 145 and 146 are coupled with joint quadrilateral frames 149 having a plurality of fastening holes 149 a so as to be disposed at the inlets and outlets of the first and second fluid passages F 1 and F 2 .
- a plurality of heat exchangers 200 can be continuously connected to each other in a direction of the first or second fluid passage by the joint quadrilateral frames 149 .
- the elastic support 150 includes first elastic members 151 and second elastic members 154 .
- the first elastic members 151 are installed between inner surfaces of the sealing panels 141 and 142 and the outermost fluid passages of the heat transfer assembly 100 or 100 a , absorb a change in volume caused by thermal expansion when the heat transfer assembly 100 or 100 a performs heat exchange, and prevent the first fluid and the second fluid, which flow through the first fluid passage F 1 from above to below and through the second fluid passage from left to right when viewed from FIG. 11 , from being mixed with each other and leaking to the outside.
- the first elastic members 151 are elastic plates, which have a predetermined length, which are bonded and fixed to the inner surfaces of the sealing plates 141 a and 142 a of the sealing panels 141 and 142 in contact with leading ends 151 a thereof and to the outer face of the heat transfer assembly 100 or 100 a in contact with trailing ends 151 c thereof, and which have a contractile section 151 b having a curved cross section between the leading and trailing ends 151 a and 151 c thereof so as to absorb an amount of deformation when the heat transfer assembly 100 or 100 a is subjected to thermal deformation.
- trailing ends 151 c of the first elastic members 151 are contacted with and welded to the flanges of the outermost heat transfer cells 130 or 130 a of the heat transfer assembly 100 or 100 a.
- each of the second elastic members 154 is an elastic plate, which has a predetermined length, which is bonded and fixed to a first lateral face of each of the support beams 143 , 144 , 145 and 146 in contact with a leading end 154 a thereof and to the outer face of the heat transfer assembly 100 or 100 a in contact with a trailing end 154 c thereof, and which has a corrugated section 154 b between the leading and trailing ends 154 a and 154 c thereof so as to absorb an amount of deformation when the heat transfer assembly 100 or 100 a is subjected to thermal deformation.
- the elastic support 150 further includes stoppers 155 , each of which has a predetermined length, is fixed to a second lateral face of each of the support beams 143 , 144 , 145 and 146 , which is perpendicular to the first lateral face of each of the support beams 143 , 144 , 145 and 146 on which each second elastic member 154 is installed, and is opposite to the outer edge of the heat transfer assembly 100 or 100 a.
- the heat transfer assembly 100 or 100 a may be provided with planar cover members 131 , each of which forms a separate fluid passage between the neighboring heat transfer plates so as to prevent moisture from being generated by a temperature difference between the heat transfer plates 110 and 120 , or 110 a and 120 a when the first and second fluids having different temperatures exchange heat with each other.
- Each cover member 131 is installed parallel to the heat transfer plates, which define the passage through which the fluid having a relatively low temperature flows, by means of a plurality of spacing pins 131 a thereof.
- cover members 131 are installed on the corners of the heat transfer plates at which the inlet of the fluid passage F 1 through which a room-temperature fluid such as air in the atmosphere flows encounters with the outlet of the fluid passage F 2 through which the fluid having a relatively high temperature flows.
Abstract
A plate type heat exchanger includes a heat transfer assembly having a plurality of heat transfer cells stacked in multiple layers, first fluid passages, and second fluid passages between the heat transfer cells so as to intersect with the first fluid passage at a right angle and to exchange heat with the first fluid passages, a framework having a plurality of support beams connected between a pair of sealing panels facing opposite outer faces of the heat transfer assembly, and an elastic support having first elastic members installed between the sealing panels and the heat transfer assembly and second elastic members installed between the support beams and the heat transfer assembly, absorbing thermal expansion of the heat transfer assembly, and preventing fluids from leaking out.
Description
- 1. Field of the Invention
- The present invention relates to a plate type heat exchanger, and more particularly, to a plate type heat exchanger, capable of simply and rapidly fabricating a heat transfer assembly to improve workability by bending a pair of heat transfer plates, by welding a pair of heat transfer plates into a heat transfer cell, and by stacking and welding the heat transfer cells in multiple layers, preventing the flaw of welding caused by downward sagging of the heat transfer plate when the welding is performed, reducing the total number of constituent parts and thus production costs, and improving assemblability.
- 2. Description of the Related Art
- In general, heat exchangers are fluid-to-fluid heat recovery apparatuses that recover heat included in gases discharged to the outside in industrial facilities such as air-conditioning facilities and then supply the recovered heat to productive facilities or interiors of buildings.
- These heat exchangers are classified into a plate type heat exchanger, heat pipe type heat exchanger, disc type heat exchanger, etc. according to the type of a heat exchange module that is an internal core part.
- In other words, the plate type heat exchanger is designed to perform heat transfer (heat exchange) between a high-temperature fluid and a low-temperature fluid without a physical contact.
- Among these heat exchangers, the plate type heat exchanger recovers heat by arranging a plurality of heat transfer plates in parallel to each other at predetermined intervals, adopting a gap between every two neighboring heat transfer plates as a channel through which a fluid flows in one direction, and alternately supplying a high-temperature fluid and a low-temperature fluid to the respective channels so as to perform heat transfer (heat exchange) through the respective heat transfer plates.
- One example of the plate type heat exchanger is disclosed in Korean Patent Publication No. 1993-7002655 (Sep. 9, 1993). According to the plate type heat exchanger of this document, a rigid parallelepiped shaped core is installed in a frame, and the core is formed of a plurality of thin parallel plates that define alternating passages for two different fluid flows. Each of the thin parallel plates is connected to its adjacent plate by parallel bars along side edges thereof, wherein each bar is of stronger construction than each plate. The frame includes a pair of spaced parallel plates and transverse structural connectors. Seal means are provided both between vertical corners and transverse corners of the core and the adjacent surfaces of the frame defined by the pair of plates and by the structural connectors.
- However, in this related art, the plurality of thin parallel plates constituting the core are welded so as to define the fluid passages, i.e. gas flow passages, crossing each other by the horizontal bars. For this reason, when a worker individually welds the parallel plates, a high precision of welding is required, which increases a working burden of the worker. Further, when the parallel plates are disposed and welded in a horizontal direction, the parallel plates sagging downwards due to their weights cause the flaw of welding.
- Further, the fluids flowing to the different passages of the core collide with the horizontal bar installed at the inlet of the passage, so that vortex and resistance of the fluid take place outside the inlet of the passage. For this reason, a contact area between the plate as the heat transfer member and the fluid is relatively reduced, and thus heat exchange efficiency is reduced.
- Further, the total number of parts constituting the conventional plate type heat exchanger is much, and thus processes of welding or joining these parts are very complicated, which increases production costs and reduces workability.
- Embodiments of the present invention provide a plate type heat exchanger capable of simply and rapidly fabricating a heat transfer assembly to improve workability by bending a pair of heat transfer plates, by welding the pair of heat transfer plates into a heat transfer cell, and by stacking and welding the heat transfer cells in multiple layers, of preventing the flaw of welding caused by downward sagging of the heat transfer plate when the welding is performed, minimizing turbulence at an inlet into which a fluid flows to improve heat exchange efficiency, reducing the total number of constituent parts and thus production costs, and improving assemblability.
- According to an aspect of the present invention, the heat exchanger includes a heat transfer assembly including a plurality of heat transfer cells stacked in multiple layers, each of the heat transfer cells including a pair of heat transfer plates, wherein each of the heat transfer plates has a pair of first flanges bent from a heat transfer area shaped of a quadrilateral panel in one direction and a pair of second flanges bent from the heat transfer area in a direction opposite the bending direction of the first flanges; wherein each of the heat transfer cells has weld lines formed along one of the first and second flanges of the heat transfer plates disposed so as to be opposite to each other in a minor image, an internal passage between the weld lines, and external recesses outside the heat transfer areas so as to intersect with the internal passage at a right angle; wherein the heat transfer assembly has first fluid passages, each of which is formed by the internal passage, and second fluid passages between the heat transfer cells to intersect with the first fluid passage at a right angle so as to exchange heat with the first fluid passages; a framework having a plurality of support beams connected between a pair of sealing panels facing opposite outer faces of the heat transfer assembly; and an elastic support having first elastic members installed between the sealing panels and the heat transfer assembly and second elastic members installed between the support beams and the heat transfer assembly, absorbing thermal expansion of the heat transfer assembly, and preventing fluids from leaking out.
- In an exemplary embodiment of the present invention, each of the heat transfer cells may have the weld lines along the first flanges of the heat transfer plates that are opposite to and in contact with each other in the minor image, and the internal passage formed between the heat transfer plates that are opposite to each other so as to be parallel to the weld lines and having an inlet and an outlet defined by the second flanges that are opposite to and spaced apart from each other.
- In another exemplary embodiment of the present invention, each of the heat transfer cells may have first slopes that are inclined toward the weld lines among the first flanges, the first or second heat transfer area, and the second flanges at a predetermined angle, and second slopes that are inclined toward the inlet and the outlet of the internal passage between the second flanges and the first or second heat transfer area at a predetermined angle so as to define the external recesses.
- In another exemplary embodiment of the present invention, the heat transfer assembly may be configured so that the second flanges of the neighboring heat transfer cells which intersect with the internal passages at the right angle are in surface contact with each other, and that the first flanges of the neighboring heat transfer cells are spaced apart from each other, and includes end plates contacting the second flanges and the weld lines at opposite left-hand and right-hand ends of the first flanges.
- In another exemplary embodiment of the present invention, each of the heat transfer cells may have the weld lines along the second flanges of the heat transfer plates that are opposite to and in contact with each other in the mirror image, and the internal passage formed between the heat transfer plates that are opposite to each other so as to be parallel to the weld lines and having an inlet and an outlet defined by the first flanges that are opposite to and spaced apart from each other.
- In another exemplary embodiment of the present invention, each of the heat transfer cells may have first slopes that are inclined toward the inlet and the outlet of the internal passage among the first flanges, the first or second heat transfer area, and the second flanges at a predetermined angle at a predetermined angle so as to define the external recesses, second slopes that are inclined toward the weld lines between the second flanges and the heat transfer area at a predetermined angle, and end plates contacting the second flanges and the weld lines at opposite left-hand and right-hand ends of the first flanges.
- In another exemplary embodiment of the present invention, the heat transfer assembly may be configured so that the second flanges of the neighboring heat transfer cells which intersect with the internal passages at the right angle are in surface contact with each other, and that the first flanges of the neighboring heat transfer cells are spaced apart from each other, and is sealed at opposite left-hand and right-hand ends of the second flanges by the end plates.
- In another exemplary embodiment of the present invention, one of the heat transfer plates may include a spacer set, a height of which is equal to or less than an interval between the neighboring heat transfer areas.
- In another exemplary embodiment of the present invention, the spacer set may include a plurality of stud spacers, a lower end of each of which is welded to one of the heat transfer areas so as to intersect with one of the heat transfer areas at a right angle.
- In another exemplary embodiment of the present invention, the spacer set may include a plurality of strip spacers, a lower end of each of which is welded to one of the heat transfer areas so as to intersect with one of the heat transfer areas at a right angle, and each of which extends in a flow direction of the fluid at a predetermined length.
- In another exemplary embodiment of the present invention, the spacer set may include a plurality of stud spacers, a lower end of each of which is welded to one of the heat transfer area so as to intersect with one of the heat transfer areas at a right angle, and a plurality of strip spacers, a lower end of each of which is welded to one of the heat transfer areas so as to intersect with one of the heat transfer areas at a right angle and each of which extends in a flow direction of the fluid at a predetermined length.
- In another exemplary embodiment of the present invention, the sealing panels may include sealing plates facing the outer faces of the heat transfer assembly, reinforcing plates installed on outer surfaces of the sealing plates in a lattice shape, and fastening holes formed in corners of the sealing plates and fastened to ends of the support beams by fastening members.
- In another exemplary embodiment of the present invention, each of the sealing plates may include a glass coating layer on an inner surface thereof.
- In another exemplary embodiment of the present invention, the sealing panels and the support beams may be coupled with a plurality of joint quadrilateral frames so as to be disposed at inlets and outlets of the first and second fluid passages.
- In another exemplary embodiment of the present invention, the first elastic members may include plates having a predetermined length, bonded and fixed to inner surfaces of the sealing panels in contact with leading ends thereof and to the outer face of the heat transfer assembly in contact with trailing ends thereof, and having a contractile section having a curved cross section between the leading and trailing ends thereof.
- In another exemplary embodiment of the present invention, each of the second elastic members may be an elastic plate, which has a predetermined length, which is bonded and fixed to a first lateral face of each of the support beams in contact with a leading end thereof and to the outer face of the heat transfer assembly in contact with a trailing end thereof, and which has a corrugated section between the leading and trailing ends thereof.
- In another exemplary embodiment of the present invention, the elastic support may further include stoppers, each of which has a predetermined length, is fixed to a second lateral face of each of the support beams, which is perpendicular to the first lateral face of each of the support beams on which the second elastic members are installed, and is opposite to an outer edge of the heat transfer assembly.
- In another exemplary embodiment of the present invention, the heat transfer assembly may include planar cover members spaced apart from and parallel to the heat transfer plates at a predetermined interval, so as to define another fluid passage between the heat transfer plates, through which, of the first and second fluids having different temperatures, one having a relatively low temperature flows.
- In another exemplary embodiment of the present invention, the cover members may be installed on corners of the heat transfer plate where the inlet of the fluid passage through which the fluid having the relatively low temperature flows encounters with the outlet of the fluid passage through which the fluid having a relatively high temperature flows in a triangular shape.
- According to the exemplary embodiments of the present invention, the heat transfer cell is fabricated by welding a pair of heat transfer plates disposed so as to be opposite to each other in a mirror image to thereby form weld lines along one of first and second flanges of the heat transfer plates disposed so as to be opposite to each other in a mirror image, an internal passage between the weld lines, and external recesses outside the heat transfer areas so as to intersect with the internal passage at a right angle. The heat transfer assembly is fabricated by stacking a plurality of heat transfer cells in multiple layers to thereby form first fluid passages, each of which serves as the internal passage, and second fluid passages between the heat transfer cells so as to intersect with the first fluid passages at a right angle and to exchange heat with the first fluid passages. The elastic support is installed between the sealing panels facing opposite outer faces of the heat transfer assembly and the heat transfer assembly and between the support beams provided between the sealing panels and the heat transfer assembly, thereby absorbing thermal expansion of the heat transfer assembly and preventing fluids from leaking out. Thereby, the heat exchanger can simply and rapidly fabricated, prevent the flaw of welding when welding is performed, reducing a burden of the welding to improve workability, reducing the total number of constituent parts and thus production costs, and improving assemblability.
- Further, the heat exchanger can minimize turbulence and resistance of the fluid occurring at the inlets of the fluid passages of the heat transfer assembly, and thereby stably maintain contact between the fluid and the heat transfer plate as the heat transfer member to improve heat exchange efficiency.
- The above and other aspects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
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FIG. 1 is a perspective view illustrating a heat exchanger according to an embodiment of the present invention; -
FIG. 2 is an exploded perspective view illustrating a heat exchanger according to an embodiment of the present invention; -
FIGS. 3A through 3C illustrate a heat transfer cell that is applied to a heat exchanger according to a first embodiment of the present invention, whereinFIG. 3A is an entire perspective view,FIG. 3B is a cross-sectional view taken alongline 3 b-3 b′ ofFIG. 3A , andFIG. 3C is a cross-sectional view taken alongline 3 c-3 c′ ofFIG. 3A ; -
FIGS. 4A through 4D illustrate a process of fabricating a heat transfer cell for a heat exchanger according to an embodiment of the present invention; -
FIGS. 5A through 5C illustrate another example of a heat transfer cell for a heat exchanger according to a second embodiment of the present invention, whereinFIG. 5A is an entire perspective view,FIG. 5B is a cross-sectional view taken alongline 5 b-5 b′ ofFIG. 5A , andFIG. 5B is a cross-sectional view taken alongline 5 c-5 c′ ofFIG. 5A ; -
FIGS. 6A through 6D illustrate a process of fabricating another example of a heat transfer cell for a heat exchanger according to an embodiment of the present invention; -
FIG. 7 is a perspective view illustrating a heat transfer assembly for a heat exchanger according to an embodiment of the present invention; -
FIG. 8 is a perspective view illustrating another example of a heat transfer assembly for a heat exchanger according to an embodiment of the present invention; -
FIGS. 9A through 9E are perspective views illustrating a set of spacers installed on a heat transfer plate of a heat transfer cell for a heat exchanger according to an embodiment of the present invention, whereinFIGS. 9A and 9B are for a stud type,FIGS. 9C and 9D are for a strip type, andFIGS. 9E and 9F are for a mixed type; -
FIGS. 10A and 10B illustrate a framework installed on a heat exchanger according to an embodiment of the present invention, whereinFIG. 10A is a perspective view illustrating sealing panels, andFIG. 10B is a perspective view illustrating a support beam; -
FIG. 11 is a cross-sectional view illustrating a heat exchanger according to first and second embodiments of the present invention, wherein the heat exchanger is cut in a direction of a first fluid passage; and -
FIG. 12 illustrates an elastic support for a heat exchanger according to an embodiment of the present invention, whereinFIG. 12A is for a first elastic member of the elastic support, andFIG. 12B is for a second elastic member of the elastic support. - Exemplary embodiments of the present invention will now be described in greater detail with reference to the accompanying drawings.
-
FIG. 1 is a perspective view illustrating a heat exchanger according to an embodiment of the present invention, andFIG. 2 is an exploded perspective view illustrating a heat exchanger according to an embodiment of the present invention. - As illustrated in
FIGS. 1 and 2 , according to an embodiment of the present invention, theheat exchanger 200 includes a hexahedralheat transfer assembly 100 made up of a plurality ofheat transfer cells 130, each of which includes a pair ofheat transfer plates framework 140, and an elastic support 150. - In
FIG. 1 , a first fluid passage f1 refers to a passage through which a first fluid flows from an upper side to a lower side of the heat exchanger, particularly, vertically flows through an internal passage of eachheat transfer cell 130 of the hexahedralheat transfer assembly 100. A second fluid passage f2 refers to a passage through which a second fluid flows from a left-hand side to a right-hand side of the heat exchanger, particularly, horizontally flows through an internal passage between every two neighboringheat transfer cells 130 of the hexahedralheat transfer assembly 100. The flows of the first and second fluid are not limited to this configuration. Thus, the flows of the first and second fluids may be opposite to each other. - Here, one of the first and second fluid includes air having an atmospheric temperature, and the other fluid includes waste gas, exhaust gas, or the like that is discharged from any industrial field and has a relatively higher temperature.
-
FIGS. 3A through 3C illustrate a heat transfer cell that is applied to a heat exchanger according to a first embodiment of the present invention, whereinFIG. 3A is an entire perspective view,FIG. 3B is a cross-sectional view taken alongline 3 b-3 b′ ofFIG. 3A , andFIG. 3C is a cross-sectional view taken alongline 3 c-3 c′ ofFIG. 3A . - As illustrated in
FIGS. 3A , 3B and 3C, theheat transfer cell 130 is formed by welding a pair ofheat transfer plates heat transfer plates - In detail, the
heat transfer plate heat transfer cell 130 includes aheat transfer area 111 or 121 shaped of a substantially quadrilateral panel, a pair offirst flanges heat transfer area 111 or 121 in one direction when viewed fromFIG. 1 , and a pair ofsecond flanges heat transfer area 111 or 121 in the direction opposite the bending direction of thefirst flanges heat transfer cell 130 includes weld lines S1 along thefirst flanges FIG. 1 , the internal passage P1 defined between theheat transfer areas 111 and 121 parallel to the weld lines S1. An inlet and an outlet of the internal passage P1 are formed by thesecond flanges FIG. 1 . - Here, the
first flanges second flanges heat transfer areas 111 and 121 perpendicular to each other. -
First slopes first flanges heat transfer area 111 or 121, and thesecond flanges - Further,
second slopes inlet 131 and the outlet 132 of the internal passage P1 between thesecond flanges heat transfer area 111 or 121 at a predetermined angle so as to define theexternal recesses second flanges - At this time, the weld lines Si are formed by seam welding faying surfaces of the
first flanges heat transfer plates inlet 131 and the outlet 132 of the internal passage P1 are formed by thesecond flanges -
FIGS. 4A through 4D illustrate a process of fabricating a heat transfer cell for a heat exchanger according to an embodiment of the present invention. - First, as illustrated in
FIG. 4A , there is prepared a plate T, which is shaped of a quadrilateral panel. The plate T is placed on a press (not shown), and then is subjected to external force through a die. Thereby, as illustrated inFIG. 4B , the plate T is formed into aheat transfer plate heat transfer area 111 or 121 shaped of a quadrilateral panel, a pair offirst flanges heat transfer area 111 or 121 in one direction, and a pair ofsecond flanges heat transfer area 111 or 121 in the direction that is perpendicular and opposite to the bending direction of thefirst flanges - Subsequently, as illustrated in
FIG. 4C , theheat transfer plates first flanges second flanges - In this state, the
first flanges FIG. 4D , the outer ends of thefirst flanges FIG. 4D . Thereby, theheat transfer cell 130 is fabricated. -
FIGS. 5A through 5C illustrates another example of a heat transfer cell for a heat exchanger according to a second embodiment of the present invention, whereinFIG. 5A is an entire perspective view,FIG. 5B is a cross-sectional view taken alongline 5 b-5 b′ ofFIG. 5A , andFIG. 5C is a cross-sectional view taken alongline 5 c-5 c′ ofFIG. 5A . - As illustrated in
FIGS. 5A , 5B and 5C, theheat transfer cell 130 a made up of a pair ofheat transfer plates heat transfer plates - In detail, the
heat transfer plate heat transfer cell 130 a includes aheat transfer area 111 a or 121 a shaped of a quadrilateral panel, a pair offirst flanges heat transfer area 111 a or 121 a in one direction, and a pair ofsecond flanges heat transfer area 111 a or 121 a in the direction that is perpendicular and opposite to the bending direction of thefirst flanges heat transfer cell 130 a includes weld lines S1 along thefirst flanges FIG. 5A , the internal passage P2 defined between theheat transfer areas 111 a and 121 a parallel to the weld lines S1. An inlet and an outlet of the internal passage P2 are formed by thefirst flanges FIG. 5A . - Here, the
first flanges second flanges heat transfer areas 111 a and 121 a in the direction that is perpendicular and opposite to each other. -
First slopes first flanges heat transfer area 111 a or 121 a, and thesecond flanges external recesses 101 a and 102 a between thefirst flanges - Further,
second slopes second flanges heat transfer area 111 a or 121 a at a predetermined angle. - At this time, the weld lines S2 are formed by seam welding faying surfaces of the
first flanges heat transfer plates first flanges -
FIGS. 6A through 6D illustrate a process of fabricating another example of a heat transfer cell for a heat exchanger according to an embodiment of the present invention. - First, as illustrated in
FIG. 6A , a plate T shaped of a quadrilateral panel is prepared. The plate T is placed on a press (not shown), and then is subjected to external force through a die. Thereby, as illustrated inFIG. 6B , the plate T is formed into aheat transfer plate heat transfer area 111 a or 121 a shaped of a quadrilateral panel, a pair offirst flanges heat transfer area 111 a or 121 a in one direction, and a pair ofsecond flanges heat transfer area 111 a or 121 a in the direction that is perpendicular and opposite to the bending direction of thefirst flanges - Subsequently, as illustrated in
FIG. 6C , theheat transfer plates first flanges second flanges - In this state, the
second flanges FIG. 6D , the outer ends of thesecond flanges FIG. 6 . Thereby, theheat transfer cell 130 a is fabricated. -
FIG. 7 is a perspective view illustrating a heat transfer assembly for a heat exchanger according to an embodiment of the present invention. - As illustrated in
FIG. 7 , theheat transfer assembly 100 is a hexahedral rigid structure in which a plurality ofheat transfer cells 130, each of which is a unit member fabricated by welding a pair ofheat transfer plates - This
heat transfer assembly 100 is designed to form a passage having a predetermined size such that a fluid can freely flow between two neighboring ones of theheat transfer cells 130, thereby forming a first fluid passage F1 through which a first fluid flows one side to the other side. - Here, a second fluid passage F2 intersects with the first fluid passage F1, which is formed as an internal passage P1 in each
heat transfer cell 130, at a right angle. Thus, a second fluid flowing through the second fluid passage F2 flows through theheat transfer assembly 100 without being mixed with the first fluid, so that the first and second fluids having different temperatures can exchange heat with each other. - In detail, when the
heat transfer cells 130, each of which has the weld lines Si of thefirst flanges FIG. 7 , thesecond flanges heat transfer cell 130 at a right angle are in surface contact with and are welded to thesecond flanges heat transfer cell 130, whereas thefirst flanges first flanges heat transfer cell 130. - Thus, the
first flanges end plates first flanges heat transfer cell 130 and are in contact with the weld lines S1. Thereby, an inlet and an outlet of the second fluid passage F2 are defined between theheat transfer cell 130 and its neighboringheat transfer cell 130. -
FIG. 8 is a perspective view illustrating another example of a heat transfer assembly for a heat exchanger according to an embodiment of the present invention. - As illustrated in
FIG. 8 , the heat transfer assembly 100 a is a hexahedral rigid structure in which a plurality ofheat transfer cells 130 a, each of which is a unit member fabricated by welding a pair ofheat transfer plates - This heat transfer assembly 100 a is designed to form a passage having a predetermined size such that a fluid can freely flow between two neighboring ones of the
heat transfer cells 130 a, thereby forming a first fluid passage F1 through which a first fluid flows one side to the other side. - Here, the first fluid passage F1 intersects with a second fluid passage F2, which is formed as an internal passage P2 in each
heat transfer cell 130 a, at a right angle. Thus, the first fluid flowing through the first fluid passage F1 flows through the heat transfer assembly 100 a without being mixed with a second fluid, so that the first and second fluids having different temperatures can exchange heat with each other. - In detail, when the
heat transfer cells 130 a, each of which has the weld lines S2 of thesecond flanges FIG. 8 , thefirst flanges heat transfer cell 130 a at a right angle are in surface contact with and are welded to thefirst flanges heat transfer cell 130 a, whereas thesecond flanges second flanges second flanges end plates -
FIGS. 9A through 9F are perspective views illustrating a set of spacers installed on a heat transfer plate of a heat transfer cell for a heat exchanger according to an embodiment of the present invention, whereinFIGS. 9A and 9B are for a stud type,FIGS. 9C and 9D are for a strip type, andFIGS. 9E and 9F are for a mixed type. - As illustrated in
FIGS. 9A through 9F , theheat transfer plate heat transfer areas heat transfer area heat transfer plates - The
heat transfer plates heat transfer assembly 100 or 100 a by stacking theheat transfer cells heat transfer cells heat transfer area heat transfer plates heat transfer plates - In addition, the spacer set 160 increases an internal surface area of the heat transfer area, so that it can increase heat exchange efficiency between first and second fluids.
- Accordingly, the process of welding the flanges of the
heat transfer cells heat transfer assembly 100 or 100 a can be more precisely performed without a flaw. - As illustrated in
FIGS. 9A and 9B , the spacer set 160 a includes a plurality ofstud spacers 163, a lower end of each of which is welded to theheat transfer area heat transfer area stud spacer 163 includes aweld strap 161 fixed to theheat transfer area support stud 162 vertically extending from the top of theweld strap 161. - Here, the
support stud 162 is shown to have, but not limited to, a cylindrical shape. Thus, thesupport stud 162 may have an oval cross section or an angled cross section. - As illustrated in
FIGS. 9C and 9D , the spacer set 160 b includes a plurality ofstrip spacers 164, a lower end of each of which is welded to theheat transfer area heat transfer area - Finally, as illustrated in
FIGS. 9E and 9F , the spacer set 160 c includes a plurality ofstud spacers 163, a lower end of each of which is welded to theheat transfer area heat transfer area strip spacers 164, a lower end of each of which is welded to theheat transfer area heat transfer area stud spacers 163 are mixed with thestrip spacers 164. - Here, the
stud spacers 163, which are selectively installed on either an upper surface, i.e. a front surface, or a lower surface, i.e. a rear surface, of theheat transfer area - Specifically, in the process of fabricating the
heat transfer assembly 100 or 100 a, theheat transfer cells 130 made up of theheat transfer plates stud spacers 163 on the central region of each heat transfer area may be set to be narrower than that on an edge region of each heat transfer area. - Further, the interval between the neighboring
strip spacers 164 is, in one embodiment, set in such a manner that the central region of each heat transfer area is narrower than the edge region of each heat transfer area. - As illustrated in
FIGS. 1 and 2 , theframework 140 includes a pair of sealingpanels heat transfer assembly 100 or 100 a, and a plurality of support beams 143, 144, 145 and 146 connected between the sealingpanels - As illustrated in
FIG. 10A , the sealingpanels quadrilateral sealing plates heat transfer assembly 100 or 100 a, reinforcingplates 141 b and 142 b installed on outer surfaces of the sealingplates fastening holes plates plates fastening members 141 e and 142 e. - In one embodiment, the sealing
plates heat transfer assembly 100 or 100 a are provided with glass coating layers 141 d and 142 d on inner surfaces thereof which have a predetermined thickness so as to inhibit thermal deformation and corrosion to the maximum extent. - The support beams 143, 144, 145 and 146 are support members that connect and support the sealing
panels heat transfer assembly 100 or 100 a with theheat transfer assembly 100 or 100 a in between and that have a predetermined length. - As illustrated in
FIG. 10B , each of the support beams 143, 144, 145 and 146 is provided withfastening holes fastening members 141 e and 142 e are fastened corresponding to the fastening holes 141 c and 142 c formed in corners of the sealingpanels - Each of the support beams 143, 144, 145 and 146 is provided with reinforcing
ribs 148 at regular intervals in a lengthwise direction. - Meanwhile, the sealing
panels quadrilateral frames 149 having a plurality offastening holes 149 a so as to be disposed at the inlets and outlets of the first and second fluid passages F1 and F2. - A plurality of
heat exchangers 200 can be continuously connected to each other in a direction of the first or second fluid passage by the joint quadrilateral frames 149. - As illustrated in
FIGS. 2 and 11 , the elastic support 150 includes firstelastic members 151 and secondelastic members 154. The firstelastic members 151 are installed between inner surfaces of the sealingpanels heat transfer assembly 100 or 100 a, absorb a change in volume caused by thermal expansion when theheat transfer assembly 100 or 100 a performs heat exchange, and prevent the first fluid and the second fluid, which flow through the first fluid passage F1 from above to below and through the second fluid passage from left to right when viewed fromFIG. 11 , from being mixed with each other and leaking to the outside. - As illustrated in
FIGS. 11 and 12A , the firstelastic members 151 are elastic plates, which have a predetermined length, which are bonded and fixed to the inner surfaces of the sealingplates panels heat transfer assembly 100 or 100 a in contact with trailing ends 151 c thereof, and which have a contractile section 151 b having a curved cross section between the leading and trailing ends 151 a and 151 c thereof so as to absorb an amount of deformation when theheat transfer assembly 100 or 100 a is subjected to thermal deformation. - Here, the trailing ends 151 c of the first
elastic members 151 are contacted with and welded to the flanges of the outermostheat transfer cells heat transfer assembly 100 or 100 a. - As illustrated in
FIGS. 11 and 12B , each of the secondelastic members 154 is an elastic plate, which has a predetermined length, which is bonded and fixed to a first lateral face of each of the support beams 143, 144, 145 and 146 in contact with aleading end 154 a thereof and to the outer face of theheat transfer assembly 100 or 100 a in contact with a trailingend 154 c thereof, and which has acorrugated section 154 b between the leading and trailing ends 154 a and 154 c thereof so as to absorb an amount of deformation when theheat transfer assembly 100 or 100 a is subjected to thermal deformation. The elastic support 150 further includesstoppers 155, each of which has a predetermined length, is fixed to a second lateral face of each of the support beams 143, 144, 145 and 146, which is perpendicular to the first lateral face of each of the support beams 143, 144, 145 and 146 on which each secondelastic member 154 is installed, and is opposite to the outer edge of theheat transfer assembly 100 or 100 a. - Meanwhile, the
heat transfer assembly 100 or 100 a may be provided withplanar cover members 131, each of which forms a separate fluid passage between the neighboring heat transfer plates so as to prevent moisture from being generated by a temperature difference between theheat transfer plates - Each
cover member 131 is installed parallel to the heat transfer plates, which define the passage through which the fluid having a relatively low temperature flows, by means of a plurality of spacing pins 131 a thereof. - Further, the
cover members 131 are installed on the corners of the heat transfer plates at which the inlet of the fluid passage F1 through which a room-temperature fluid such as air in the atmosphere flows encounters with the outlet of the fluid passage F2 through which the fluid having a relatively high temperature flows. - While the present invention has been shown and described in connection with the exemplary embodiments, it will be apparent to those skilled in the art that modifications and variations can be made without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (19)
1. A heat exchanger comprising:
a heat transfer assembly including a plurality of heat transfer cells stacked in multiple layers, each of the heat transfer cells including a pair of heat transfer plates, wherein each of the heat transfer plates has a pair of first flanges bent from a heat transfer area shaped of a quadrilateral panel in one direction and a pair of second flanges bent from the heat transfer area in a direction opposite the bending direction of the first flanges;
wherein each of the heat transfer cells has weld lines formed along one of the first and second flanges of the heat transfer plates disposed so as to be opposite to each other in a mirror image, an internal passage between the weld lines, and external recesses outside the heat transfer areas so as to intersect with the internal passage at a right angle;
wherein the heat transfer assembly has first fluid passages, each of which is formed by the internal passage, and second fluid passages between the heat transfer cells to intersect with the first fluid passage at a right angle so as to exchange heat with the first fluid passages;
a framework having a plurality of support beams connected between a pair of sealing panels facing opposite outer faces of the heat transfer assembly; and,
an elastic support having first elastic members installed between the sealing panels and the heat transfer assembly and second elastic members installed between the support beams and the heat transfer assembly, absorbing thermal expansion of the heat transfer assembly, and preventing fluids from leaking out.
2. The heat exchanger of claim 1 , wherein each of the heat transfer cells has the weld lines along the first flanges of the heat transfer plates that are opposite to and in contact with each other in the mirror image, and the internal passage formed between the heat transfer plates that are opposite to each other so as to be parallel to the weld lines and having an inlet and an outlet defined by the second flanges that are opposite to and spaced apart from each other.
3. The heat exchanger of claim 2 , wherein each of the heat transfer cells has first slopes that are inclined toward the weld lines among the first flanges, the first or second heat transfer area, and the second flanges at a predetermined angle, and second slopes that are inclined toward the inlet and the outlet of the internal passage between the second flanges and the first or second heat transfer area at a predetermined angle so as to define the external recesses.
4. The heat exchanger of claim 3 , wherein the heat transfer assembly is configured so that the second flanges of the neighboring heat transfer cells which intersect with the internal passages at the right angle are in surface contact with each other, and that the first flanges of the neighboring heat transfer cells are spaced apart from each other, and includes end plates contacting the second flanges and the weld lines at opposite left-hand and right-hand ends of the first flanges.
5. The heat exchanger of claim 1 , wherein each of the heat transfer cells has the weld lines along the second flanges of the heat transfer plates that are opposite to and in contact with each other in the mirror image, and the internal passage formed between the heat transfer plates that are opposite to each other so as to be parallel to the weld lines and having an inlet and an outlet defined by the first flanges that are opposite to and spaced apart from each other.
6. The heat exchanger of claim 5 , wherein each of the heat transfer cells has first slopes that are inclined toward the inlet and the outlet of the internal passage among the first flanges, the first or second heat transfer area, and the second flanges at a predetermined angle at a predetermined angle so as to define the external recesses, second slopes that are inclined toward the weld lines between the second flanges and the heat transfer area at a predetermined angle, and end plates contacting the second flanges and the weld lines at opposite left-hand and right-hand ends of the first flanges.
7. The heat exchanger of claim 6 , wherein the heat transfer assembly is configured so that the second flanges of the neighboring heat transfer cells which intersect with the internal passages at the right angle are in surface contact with each other, and that the first flanges of the neighboring heat transfer cells are spaced apart from each other, and is sealed at opposite left-hand and right-hand ends of the second flanges by the end plates.
8. The heat exchanger of claim 1 , wherein one of the heat transfer plates includes a spacer set, a height of which is equal to or less than an interval between the neighboring heat transfer areas.
9. The heat exchanger of claim 8 , wherein the spacer set includes a plurality of stud spacers, a lower end of each of which is welded to one of the heat transfer areas so as to intersect with one of the heat transfer areas at a right angle.
10. The heat exchanger of claim 8 , wherein the spacer set includes a plurality of strip spacers, a lower end of each of which is welded to one of the heat transfer areas so as to intersect with one of the heat transfer areas at a right angle, and each of which extends in a flow direction of the fluid at a predetermined length.
11. The heat exchanger of claim 8 , wherein the spacer set includes a plurality of stud spacers, a lower end of each of which is welded to one of the heat transfer area so as to intersect with one of the heat transfer areas at a right angle, and a plurality of strip spacers, a lower end of each of which is welded to one of the heat transfer areas so as to intersect with one of the heat transfer areas at a right angle and each of which extends in a flow direction of the fluid at a predetermined length.
12. The heat exchanger of claim 8 , wherein the sealing panels include sealing plates facing the outer faces of the heat transfer assembly, reinforcing plates installed on outer surfaces of the sealing plates in a lattice shape, and fastening holes formed in corners of the sealing plates and fastened to ends of the support beams by fastening members.
13. The heat exchanger of claim 12 , wherein each of the sealing plates includes a glass coating layer on an inner surface thereof.
14. The heat exchanger of claim 12 , wherein the sealing panels and the support beams are coupled with a plurality of joint quadrilateral frames so as to be disposed at inlets and outlets of the first and second fluid passages.
15. The heat exchanger of claim 1 , wherein the first elastic members include plates having a predetermined length, bonded and fixed to inner surfaces of the sealing panels in contact with leading ends thereof and to the outer face of the heat transfer assembly in contact with trailing ends thereof, and having a contractile section having a curved cross section between the leading and trailing ends thereof.
16. The heat exchanger of claim 1 , wherein each of the second elastic members comprises an elastic plate, which has a predetermined length, which is bonded and fixed to a first lateral face of each of the support beams in contact with a leading end thereof and to the outer face of the heat transfer assembly in contact with a trailing end thereof, and which has a corrugated section between the leading and trailing ends thereof.
17. The heat exchanger of claim 16 , wherein the elastic support further includes stoppers, each of which has a predetermined length, is fixed to a second lateral face of each of the support beams, which is perpendicular to the first lateral face of each of the support beams on which the second elastic members are installed, and is opposite to an outer edge of the heat transfer assembly.
18. The heat exchanger of claim 1 , wherein the heat transfer assembly includes planar cover members spaced apart from and parallel to the heat transfer plates at a predetermined interval, so as to define another fluid passage between the heat transfer plates, through which, of the first and second fluids having different temperatures, one having a relatively low temperature flows.
19. The heat exchanger of claim 18 , wherein the cover members are installed on corners of the heat transfer plate where the inlet of the fluid passage through which the fluid having the relatively low temperature flows encounters with the outlet of the fluid passage through which the fluid having a relatively high temperature flows in a triangular shape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US12/506,540 US20110017436A1 (en) | 2009-07-21 | 2009-07-21 | Plate type heat exchanger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/506,540 US20110017436A1 (en) | 2009-07-21 | 2009-07-21 | Plate type heat exchanger |
Publications (1)
Publication Number | Publication Date |
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US20110017436A1 true US20110017436A1 (en) | 2011-01-27 |
Family
ID=43496273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/506,540 Abandoned US20110017436A1 (en) | 2009-07-21 | 2009-07-21 | Plate type heat exchanger |
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US (1) | US20110017436A1 (en) |
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US20130062042A1 (en) * | 2010-04-16 | 2013-03-14 | Mircea Dinulescu | Plate type heat exchanger having outer heat exchanger plates with improved connections to end panels |
US20140190664A1 (en) * | 2011-03-24 | 2014-07-10 | Innova S.R.L. | Heat exchanger |
ITUB20160428A1 (en) * | 2016-01-20 | 2017-07-20 | Stefano Bandini | Device for heat transfer between fluids with interlocking assembly. |
US20180033899A1 (en) * | 2013-11-08 | 2018-02-01 | Lg Electronics Inc. | Solar cell |
WO2018077481A1 (en) | 2016-10-27 | 2018-05-03 | Linde Aktiengesellschaft | Plate heat exchanger |
US10047663B2 (en) | 2014-04-29 | 2018-08-14 | Dana Canada Corporation | Charge air cooler with multi-piece plastic housing |
US10113767B1 (en) * | 2018-02-01 | 2018-10-30 | Berg Companies, Inc. | Air handling unit |
US20190390869A1 (en) * | 2016-02-19 | 2019-12-26 | Mitsubishi Electric Corporation | Heat exchanger and heat exchange ventilator |
FR3086742A1 (en) * | 2018-10-01 | 2020-04-03 | Heurtey Petrochem S.A. | PLATE FOR A PLATE HEAT EXCHANGER |
US20220003165A1 (en) * | 2020-06-25 | 2022-01-06 | Turbine Aeronautics IP Pty Ltd | Heat exchanger |
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