EP0503080A1 - Laminated heat exchanger - Google Patents
Laminated heat exchanger Download PDFInfo
- Publication number
- EP0503080A1 EP0503080A1 EP19910916786 EP91916786A EP0503080A1 EP 0503080 A1 EP0503080 A1 EP 0503080A1 EP 19910916786 EP19910916786 EP 19910916786 EP 91916786 A EP91916786 A EP 91916786A EP 0503080 A1 EP0503080 A1 EP 0503080A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- side plate
- hole
- plate
- channels
- plates
- 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.)
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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
- F28D9/0062—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 spaced plates with inserted elements
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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
- F28D9/0062—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 spaced plates with inserted elements
- F28D9/0075—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 spaced plates with inserted elements the plates having openings therein for circulation of the heat-exchange medium from one conduit to another
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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
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/10—Particular pattern of flow of the heat exchange media
- F28F2250/102—Particular pattern of flow of the heat exchange media with change of flow direction
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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
- F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
- F28F2280/04—Means for preventing wrong assembling of parts
Definitions
- the present invention relates to a layer-built heat exchanger for exchanging heat between a first coolant and a second coolant, and is used in a radiator for coolant oil in machine tools or in an air conditioner.
- a conventional layer-built heat exchanger is described below with reference to Figs. 1 - 5 (Japanese Patent Laid-Open No. S61-243297).
- the conventional layer-built heat exchanger 1 combines plural first-side plates 2, seal plates 3, and second-side plates 4 between end plates 5a and 5b.
- the inlet and outlet pipes 6-7 and 8-9 for the first and second coolants, respectively, are connected to the one end plate 5b.
- the first-side plate 2 has a rectangular shape with a pair of round holes 10, provided offset from the center at each end of the plate, for the first coolant flow.
- a series of parallel and winding channels 11 are formed by dividers 12 for conducting the coolant from a position near the round hole 10 at one end of the first-side plate 2 to a position near the round hole 10 at the other end.
- Holes 13 for the flow of the second coolant are also formed on a diagonal line on the first-side plate 2 on the sides different from those on which the round holes 10 are formed.
- Each hole 13 has a rectangular shaped area 14 and a semi-circular shaped area 15 at the middle of the long side of the rectangular shaped area 14.
- the second-side plate 4 has a similar rectangular shape with a series of parallel and winding channels 16 formed by dividers 17 to conduct the coolant between the two round holes 18.
- These round holes 18 are formed correspondingly to the holes 13 in the first-side plate 2 with part of each hole 18 tracing the same arc as the semi-circular shaped area 15 of the corresponding hole 13 in the first-side plate 2.
- Holes 19 are also provided correspondingly to the round holes 10 in the first-side plate 2.
- Each hole 19 also consists of a rectangular shaped area 20 and a semi-circular shaped area 21 at the middle of the long side of the rectangular shaped area 20 such that part of each semi-circular shaped area 21 traces the same arc as the corresponding round hole 10 in the first-side plate 2.
- the seal plate 3 has holes 22 and 23 similarly shaped to the corresponding holes 13 and 19 in the first- and second-side plates 2 and 4, respectively.
- the length of the rectangular shaped area 6 and 13 of the holes 13 and 19 is made long enough to cover the ends of each of the channels 11 and 16, respectively.
- first-side plate 2 seal plate 3
- second-side plate 4 seal plate 13
- first-side plate 2 seal plate 3
- seal plate 3 ⁇ as shown in the figure, and are sealed between the seal end plate 5a on one end and the end plate 5b provided with the first and second coolant inlet/outlet pipes 6-7 and 8-9.
- the second coolant flows in through the inlet pipe 8 is diffused to the channels 16 of the second-side plate 4 in the rectangular shaped area of the hole 19 in the seal plate 3, and flows out through the hole 19 on the opposite side to the outlet pipe 8.
- Heat is exchanged between the first and second coolants through the seal plate 3, which is made from a material with good thermal conductivity for greater heat exchange efficiency.
- the distance from the ends of the channels 11 or 16 to the center of the hole 10 or 18 is long because the channels 11 or 16 of the first-side plate 2 or second-side plate 4 are the same length and the ends of the channels form a line with respect to the hole 10 or 18.
- the first or second coolant must therefore travel a greater distance before it enters the channels, and coolant flow is impeded by this increased distance.
- the seal plate 3 tends to become deformed where the channels 11 of the first-side plate 2 and the channels 16 of second-side plate 4 are positioned one over the other through the seal plate 3 because the seal plate 3 is the only member separating the channels 11 and 16 of the first- and second-side plates 2 and 4. This deformation also interferes with the coolant flow. It is therefore necessary to increase the thickness H of the seal plate 3 to prevent this deformation. The overall size and cost of the heat exchanger therefore increase.
- the holes in the end plate 5b must be countersunk so that the inlet/outlet pipes 6, 7, 8 and 9 can be positioned.
- an object of the present invention is to provide a layer-built heat exchanger for shortening the distance between the inlet/outlet holes and channel ends in the first-side plate and the second-side plate, and thus reducing the flow resistance.
- a further object is to provide a layer-built heat exchanger wherein there is minimal parallel overlap between the channels of the first-side plate and the second-side plate through the seal plate.
- a further object is to provide a layer-built heat exchanger wherein there is no error in the assembly order of the first-side plate, seal plate, and the second-side plate.
- a further object is to provide a layer-built heat exchanger whereby positioning of the inlet/outlet pipes to the end plate is simplified.
- a layer-built heat exchanger comprises channels in the first- and second-side plates of different lengths such that the ends of the channels form a V-shape with an approximately equal distance between the end of each channel and the hole. Furthermore, the channels of the second-side plate are positioned over the dividers forming the channels of the first-side plate, and the channels of the first-side plate are positioned over the dividers forming the channels of the second-side plate. This prevents deformation of the seal plate between the first-side plate and the second-side plate.
- a convex member that has a height less than the plate thickness is formed on two different sides of the first-side plate and the second-side plate, and concave portions are formed in the seal plate at a position to mate with the convex members of the first- and second-side plates. Omission of the seal plate during assembly is thus less likely to be forgotten.
- the diameter of the holes in the first-side plate or the second-side plate is smaller than the diameter of the holes to which the inlet/outlet pipes are inserted in the end plates, thus controlling the depth to which the inlet/outlet pipes can be inserted.
- inlet/outlet pipes are inserted from one end plate to the other, and a hole is provided at the position of the round holes in the first-side plate, second-side plate, and seal plate to control the depth of inlet/outlet pipe insertion.
- the layer-built heat exchanger 31 is an assembly of plural first-side plates 32, seal plates 3, and second-side plates 33 assembled in alternating layers and sealed between a first end plate 5a and a second end plate 5b, which comprises inlet/outlet pipes 6 and 8, so that the fluid can flow through the first-side plate 32 and the second-side plate 33 without leaking.
- the first coolant flowing in from the inlet pipe 6 flows into the plural channels 11, divided by the dividers 34, in the first-side plate 32, and flows out from the outlet pipe 7.
- the second coolant flowing in from the inlet pipe flows into the plural channels 17, divided by the dividers 35, in the second-side plate 33, and flows out from the outlet pipe (not shown). Heat is exchanged through the seal plate 3 between the two different fluids flowing through the upper and lower plates.
- the channels 17 of the second-side plate 33 are formed over the dividers 34 of the first-side plate 32, and the channels 11 of the first-side plate 32 are formed over the dividers 35 of the second-side plate 33, two seal plates 3 and the divider 34 of one second-side plate 33 or the divider 35 of one first-side plate 32 are positioned between any two channels 11 or channels 17.
- the thickness of the solid material located between the channels 11 or 17 becomes great, so as to prevent deformation of the seal plate 3 even when there is a high differential pressure between the first and second coolants. Thus, the coolant flow can be maintained.
- 41 is the end plate comprising plural inlet/outlet members 42
- 41a is another end plate to seal the coolant
- 43 is the first-side plate comprising channels 43a formed with dividers 43b
- 44 is the second-side plate comprising channels 44a formed with dividers 44b
- 45 is a seal plate 45.
- Plural convex members 46 that are shallower than the plate thickness h are formed on two different sides of the first-side plate 43 and the second-side plate 44, and concave portions 47 are formed in the seal plate 45 at a position to mate with the convex members 46 of the first- and second-side plates.
- first-side plate 43 and the second-side plate 44 mate with the seal plate 45 during assembly, and if the seal plate 45 is forgotten and not inserted during manufacture, a gap is formed between the first-side plate 43 and the second-side plate 44 by the convex members 46, having a height less than the plate thickness h, formed on two different sides of the first- and second-side plates 43 and 44.
- the mistake can be easily discovered by visual inspection.
- the holes 48 overlap one another when assembled and positioning during assembly is made easier.
- the ribbed edges prevent the plates from slipping out of position.
- the layer-built heat exchanger 51 is an assembly of plural first-side plates 2, seal plates 3, and second-side plates 4 alternately placed one over the other in said order, and the assembled layers are sealed between a first end plate (not shown) and a second end plate 5b, which end plate 5b comprises an inlet pipe 6 and an outlet pipe (not shown).
- the layers are bonded together by adhesive material or wax so that the fluid can flow through the first-side plate 2 and the second-side plate 4 without leaking.
- the first coolant flows in through the inlet pipe 6, guided along the holes 10, 22, and 19 and flows through the channels 11 of the first-side plate 2 to the holes 10, 22, and 19 on the opposite side to flow out from the outlet pipe (not shown).
- the second coolant flows in through the inlet pipe (not shown), guided along the holes 13, 23, and 18 and flows through the channels 16 of the second-side plate 4, and flows out through the holes 13, 23, and 18 on the opposite side to the outlet pipe (not shown).
- Heat is exchanged between the first and second coolants through the seal plate 3 as the coolants flow through the respective plates.
- the diameter D of the holes 10 in the plates following the end plate 5b in the assembly i.e., the first-side plate 2 or the second-side plate 4 is made smaller than the outside diameter E of the inlet/outlet pipes 6 and 7, and at the same time, the diameter of the semi-circular member 15 of the first-side plate 2 opposite the inlet/outlet pipes 8 and 9 is made smaller than the diameter of the of the inlet/outlet pipes 8 and 9.
- the type of plate can be determined by visual inspection after plate assembly to easily determine whether or not the plates are assembled in the correct order.
- the inlet pipe 61 for the first coolant passes through the end plate 5b, the round holes 10 in the first-side plates 2, the holes 22 in the seal plates 3, and the holes 19 in the second-side plates 4 to the other end plate 5a.
- a slit hole 62 is formed in the inlet pipe 61 at the position corresponding to the holes 10, 22, and 19.
- the outlet pipe for the first coolant and the inlet/outlet pipes for the second coolant are similarly formed through each of the plates to the end plate 5a.
- plural parallel channels 36 extending in a winding manner from a position adjacent one round hole 10 in the first-side plate 32 to a position adjacent the other round hole 10 are formed by plural dividers 36.
- the length of each channel 36 increases as the distance of the channel 36 from the center of the hole 10 increases, so that the ends of the channels 36 form an approximate V-shape around the center of the round hole 10 with the end of each channel 36 as close as possible to the center of the round hole 10.
- plural parallel channels 37 winding from a position adjacent one round hole 18 in the second-side plate 33 to a position adjacent the other round hole 18 are formed by plural dividers 35.
- each channel 37 increases as the distance of the channel 37 from the center of the hole 18 increases, so that the ends of the channels 37 form an approximate V-shape around the center of the round hole 18 with the end of each channel 37 as close as possible to the center of the round hole 18.
- the average distance between the end of the channels 36 and 37 and the holes 10 and 18 is therefore shortened, improving the flow and distribution of coolant into the channels 36 and 37.
- the channels 37 of the second-side plate 33 are formed over the dividers 34 of the first-side plate 32, and the channels 36 of the first-side plate 32 are formed over the dividers 35 of the second-side plate 33, two seal plates 3 and one second-side plate 33 divider 34 or first-side plate 32 divider 35 are positioned between any two channels 37 or channels 36.
- the greater total seal plate 3 thickness between the channels 37 or 36 therefore prevents deformation of the seal plate 3 even when there is a high differential pressure between the first and second coolants, and the coolant flow can thus be maintained.
- a layer-built heat exchanger is suited to exchanging heat between the first and second coolants of an air conditioner. It is also suited for exchanging heat from a working oil in machine tools and other machinery by circulation with another coolant such as water.
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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)
Abstract
Description
- The present invention relates to a layer-built heat exchanger for exchanging heat between a first coolant and a second coolant, and is used in a radiator for coolant oil in machine tools or in an air conditioner.
- Demand has risen for layer-built heat exchangers capable of using chlorofluorocarbons (CFC) and water and oil coolants in combination as first and second coolants for exchanging heat between CFC and CFC, CFC and water, water and water, or oil and water. A conventional layer-built heat exchanger is described below with reference to Figs. 1 - 5 (Japanese Patent Laid-Open No. S61-243297).
- As shown in the figures, the conventional layer-built heat exchanger 1 combines plural first-
side plates 2,seal plates 3, and second-side plates 4 betweenend plates end plate 5b. - The first-
side plate 2 has a rectangular shape with a pair ofround holes 10, provided offset from the center at each end of the plate, for the first coolant flow. A series of parallel andwinding channels 11 are formed bydividers 12 for conducting the coolant from a position near theround hole 10 at one end of the first-side plate 2 to a position near theround hole 10 at the other end. -
Holes 13 for the flow of the second coolant are also formed on a diagonal line on the first-side plate 2 on the sides different from those on which theround holes 10 are formed. Eachhole 13 has a rectangularshaped area 14 and a semi-circularshaped area 15 at the middle of the long side of the rectangularshaped area 14. - The second-
side plate 4 has a similar rectangular shape with a series of parallel andwinding channels 16 formed bydividers 17 to conduct the coolant between the tworound holes 18. Theseround holes 18 are formed correspondingly to theholes 13 in the first-side plate 2 with part of eachhole 18 tracing the same arc as the semi-circularshaped area 15 of thecorresponding hole 13 in the first-side plate 2.Holes 19 are also provided correspondingly to theround holes 10 in the first-side plate 2. Eachhole 19 also consists of a rectangularshaped area 20 and a semi-circularshaped area 21 at the middle of the long side of the rectangularshaped area 20 such that part of each semi-circularshaped area 21 traces the same arc as the correspondinground hole 10 in the first-side plate 2. - The
seal plate 3 hasholes corresponding holes side plates shaped area holes channels - The plates are then assembled in successive layers in the order of first-
side plate 2,seal plate 3, second-side plate 4,seal plate 13, first-side plate 2,seal plate 3, ······ as shown in the figure, and are sealed between theseal end plate 5a on one end and theend plate 5b provided with the first and second coolant inlet/outlet pipes 6-7 and 8-9. - With this construction the first coolant flows in through the
inlet pipe 6, is diffused to thechannels 11 of the first-side plate 2 in the rectangular shaped area of thehole 22 in theseal plate 3, and flows through thechannels 11 to thehole 22 on the opposite side to flow out from theoutlet pipe 7. Similarly, the second coolant flows in through theinlet pipe 8, is diffused to thechannels 16 of the second-side plate 4 in the rectangular shaped area of thehole 19 in theseal plate 3, and flows out through thehole 19 on the opposite side to theoutlet pipe 8. - Heat is exchanged between the first and second coolants through the
seal plate 3, which is made from a material with good thermal conductivity for greater heat exchange efficiency. - With this construction, however, the distance from the ends of the
channels hole channels side plate 2 or second-side plate 4 are the same length and the ends of the channels form a line with respect to thehole - Also, when there is a pressure difference between the first and second coolants, the
seal plate 3 tends to become deformed where thechannels 11 of the first-side plate 2 and thechannels 16 of second-side plate 4 are positioned one over the other through theseal plate 3 because theseal plate 3 is the only member separating thechannels side plates seal plate 3 to prevent this deformation. The overall size and cost of the heat exchanger therefore increase. - In addition, if the order of the plates is mistaken during assembly and the
seal plate 3 is omitted, leakage of the first and second coolants may occur, the offset in plate position makes assembly more difficult, and both productivity and quality decline. - In addition, to assemble the inlet/
outlet pipes end plate 5b, the holes in theend plate 5b must be countersunk so that the inlet/outlet pipes - Therefore, an object of the present invention is to provide a layer-built heat exchanger for shortening the distance between the inlet/outlet holes and channel ends in the first-side plate and the second-side plate, and thus reducing the flow resistance.
- A further object is to provide a layer-built heat exchanger wherein there is minimal parallel overlap between the channels of the first-side plate and the second-side plate through the seal plate.
- A further object is to provide a layer-built heat exchanger wherein there is no error in the assembly order of the first-side plate, seal plate, and the second-side plate.
- A further object is to provide a layer-built heat exchanger whereby positioning of the inlet/outlet pipes to the end plate is simplified.
- A layer-built heat exchanger according to the present invention comprises channels in the first- and second-side plates of different lengths such that the ends of the channels form a V-shape with an approximately equal distance between the end of each channel and the hole. Furthermore, the channels of the second-side plate are positioned over the dividers forming the channels of the first-side plate, and the channels of the first-side plate are positioned over the dividers forming the channels of the second-side plate. This prevents deformation of the seal plate between the first-side plate and the second-side plate.
- Furthermore, a convex member that has a height less than the plate thickness is formed on two different sides of the first-side plate and the second-side plate, and concave portions are formed in the seal plate at a position to mate with the convex members of the first- and second-side plates. Omission of the seal plate during assembly is thus less likely to be forgotten.
- Furthermore, by shaping the corners of the first-side plate, second-side plate, and seal plate differently, a simple visual inspection can confirm whether or not the plates are assembled in the correct order.
- In addition, the diameter of the holes in the first-side plate or the second-side plate is smaller than the diameter of the holes to which the inlet/outlet pipes are inserted in the end plates, thus controlling the depth to which the inlet/outlet pipes can be inserted.
- Furthermore, the inlet/outlet pipes are inserted from one end plate to the other, and a hole is provided at the position of the round holes in the first-side plate, second-side plate, and seal plate to control the depth of inlet/outlet pipe insertion.
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- Fig. 1 is an oblique view of a conventional layer-built heat exchanger,
- Fig. 2 is a plan view of the first-side plate in Fig. 1,
- Fig. 3 is a plan view of the seal plate in Fig. 1,
- Fig. 4 is a plan view of the second-side plate in Fig. 1,
- Fig. 5 is a cross sectional view of line V-V in Fig. 1,
- Fig. 6 is a cross sectional view corresponding to Fig. 5 for a layer-built heat exchanger according to one embodiment of the present invention,
- Fig. 7 is a plan view of the first-side plate in Fig. 6,
- Fig. 8 is a plan view of the seal plate in Fig. 6,
- Fig. 9 is a plan view of the second-side plate in Fig. 6,
- Fig. 10 is an oblique exploded view of a layer-built heat exchanger according to another embodiment of the present invention,
- Fig. 11 is a side view of Fig. 10,
- Fig. 12 is a plan view of the first-side plate in Fig. 10,
- Fig. 13 is a plan view of the seal plate in Fig. 10,
- Fig. 14 is a plan view of the second-side plate in Fig. 10,
- Fig. 15 is a side view of Fig. 12,
- Fig. 16 is a side view of Fig. 13,
- Fig. 17 is a side view of Fig. 14,
- Fig. 18 is a partial cross sectional view of the major components of a layer-built heat exchanger according to yet another embodiment of the present invention,
- Fig. 19 is a plan view of the first-side plate in Fig. 18,
- Fig. 20 is a plan view of the seal plate in Fig. 18,
- Fig. 21 is a plan view of the second-side plate in Fig. 18,
- Fig. 22 is a cross sectional view of a layer-built heat exchanger according to a further embodiment of the present invention.
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- The preferred embodiments of the present invention are described below with reference to the accompanying Figs. 6 - 9. It is to be noted that like parts in the preferred embodiments and the prior art described above are referred to by like reference numbers, and further description of said like parts is omitted hereinbelow.
- As shown in the figures, the layer-built
heat exchanger 31 according to the present invention is an assembly of plural first-side plates 32,seal plates 3, and second-side plates 33 assembled in alternating layers and sealed between afirst end plate 5a and asecond end plate 5b, which comprises inlet/outlet pipes side plate 32 and the second-side plate 33 without leaking. - The first coolant flowing in from the
inlet pipe 6 flows into theplural channels 11, divided by thedividers 34, in the first-side plate 32, and flows out from theoutlet pipe 7. Similarly, the second coolant flowing in from the inlet pipe (not shown) flows into theplural channels 17, divided by thedividers 35, in the second-side plate 33, and flows out from the outlet pipe (not shown). Heat is exchanged through theseal plate 3 between the two different fluids flowing through the upper and lower plates. - Because the
channels 17 of the second-side plate 33 are formed over thedividers 34 of the first-side plate 32, and thechannels 11 of the first-side plate 32 are formed over thedividers 35 of the second-side plate 33, twoseal plates 3 and thedivider 34 of one second-side plate 33 or thedivider 35 of one first-side plate 32 are positioned between any twochannels 11 orchannels 17. The thickness of the solid material located between thechannels seal plate 3 even when there is a high differential pressure between the first and second coolants. Thus, the coolant flow can be maintained. - An alternative embodiment of the invention is described below with reference to Figs. 10 - 17. In this embodiment, 41 is the end plate comprising plural inlet/
outlet members 42, 41a is another end plate to seal the coolant, 43 is the first-side plate comprising channels 43a formed withdividers 43b, 44 is the second-side plate comprising channels 44a formed withdividers 44b, and 45 is aseal plate 45. Pluralconvex members 46 that are shallower than the plate thickness h are formed on two different sides of the first-side plate 43 and the second-side plate 44, andconcave portions 47 are formed in theseal plate 45 at a position to mate with theconvex members 46 of the first- and second-side plates. Thus, the first-side plate 43 and the second-side plate 44 mate with theseal plate 45 during assembly, and if theseal plate 45 is forgotten and not inserted during manufacture, a gap is formed between the first-side plate 43 and the second-side plate 44 by theconvex members 46, having a height less than the plate thickness h, formed on two different sides of the first- and second-side plates - Furthermore, by providing the
holes 48 with a raised rib edge, theholes 48 overlap one another when assembled and positioning during assembly is made easier. In addition, the ribbed edges prevent the plates from slipping out of position. - A yet another embodiment of the invention is described below with reference to Figs. 18 - 21. Like parts in the preferred embodiments and the prior art described above are referred to by like reference numbers, and further description of said like parts is omitted hereinbelow.
- The layer-built
heat exchanger 51 according to this embodiment is an assembly of plural first-side plates 2,seal plates 3, and second-side plates 4 alternately placed one over the other in said order, and the assembled layers are sealed between a first end plate (not shown) and asecond end plate 5b, whichend plate 5b comprises aninlet pipe 6 and an outlet pipe (not shown). The layers are bonded together by adhesive material or wax so that the fluid can flow through the first-side plate 2 and the second-side plate 4 without leaking. - With this construction the first coolant flows in through the
inlet pipe 6, guided along theholes channels 11 of the first-side plate 2 to theholes holes channels 16 of the second-side plate 4, and flows out through theholes seal plate 3 as the coolants flow through the respective plates. - In this embodiment the diameter D of the
holes 10 in the plates following theend plate 5b in the assembly, i.e., the first-side plate 2 or the second-side plate 4, is made smaller than the outside diameter E of the inlet/outlet pipes semi-circular member 15 of the first-side plate 2 opposite the inlet/outlet pipes outlet pipes inlet pipe 6 and the outlet pipe (not shown) stop where they contact the first-side plate 2, and are correctly positioned without countersinking theend plate 8. - Furthermore, because the corners of the first-
side plate 2 are rounded in anarc 52 and the corners of the second-side plate 4 are bevelled on anangle 53, the type of plate can be determined by visual inspection after plate assembly to easily determine whether or not the plates are assembled in the correct order. - A further embodiment of the invention is described below with reference to Fig. 22. Like parts in the preferred embodiments and the prior art described above are referred to by like reference numbers, and further description of said like parts is omitted hereinbelow.
- In this embodiment the inlet pipe 61 for the first coolant passes through the
end plate 5b, the round holes 10 in the first-side plates 2, theholes 22 in theseal plates 3, and theholes 19 in the second-side plates 4 to theother end plate 5a. Aslit hole 62 is formed in the inlet pipe 61 at the position corresponding to theholes end plate 5a. - It is thus possible during assembly to simply insert the inlet/outlet pipes through the holes to the opposite end plate to simply and correctly position the inlet/outlet pipes in the layer-built heat exchanger.
- In these embodiments plural
parallel channels 36 extending in a winding manner from a position adjacent oneround hole 10 in the first-side plate 32 to a position adjacent the otherround hole 10 are formed byplural dividers 36. The length of eachchannel 36 increases as the distance of thechannel 36 from the center of thehole 10 increases, so that the ends of thechannels 36 form an approximate V-shape around the center of theround hole 10 with the end of eachchannel 36 as close as possible to the center of theround hole 10. In addition, pluralparallel channels 37 winding from a position adjacent oneround hole 18 in the second-side plate 33 to a position adjacent the otherround hole 18 are formed byplural dividers 35. The length of eachchannel 37 increases as the distance of thechannel 37 from the center of thehole 18 increases, so that the ends of thechannels 37 form an approximate V-shape around the center of theround hole 18 with the end of eachchannel 37 as close as possible to the center of theround hole 18. The average distance between the end of thechannels holes channels - Because the
channels 37 of the second-side plate 33 are formed over thedividers 34 of the first-side plate 32, and thechannels 36 of the first-side plate 32 are formed over thedividers 35 of the second-side plate 33, twoseal plates 3 and one second-side plate 33divider 34 or first-side plate 32divider 35 are positioned between any twochannels 37 orchannels 36. The greatertotal seal plate 3 thickness between thechannels seal plate 3 even when there is a high differential pressure between the first and second coolants, and the coolant flow can thus be maintained. - A layer-built heat exchanger according to the present invention is suited to exchanging heat between the first and second coolants of an air conditioner. It is also suited for exchanging heat from a working oil in machine tools and other machinery by circulation with another coolant such as water.
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- 3
- seal plate
- 32
- first-side plate
- 33
- second-side plate
- 43
- first-side plate
- 44
- second-side plate
Claims (7)
- A layer-built heat exchanger comprising: a first-side plate having plural channels for coolant flow formed by dividers on a flat rectangular panel, a hole at one end of the channels, and a hole on a diagonal line to the first hole on a different side of the plate; a second-side plate having plural channels for coolant flow formed by dividers on a flat rectangular panel, a hole formed separately at one end of the channels continuously to the corresponding hole in the first-side plate, and a hole on a diagonal line to the first hole on a different side of the plate continuously to the corresponding hole in the first-side plate; and a seal plate between the first-side plate and the second-side plate, and characterized by the ends of the channels in the first-side plate and the second-side plate forming a rough V-shape centering on the hole in the respective plate such that the length of each channel increases with the increase in the distance of the channel from the center of the hole.
- A layer-built heat exchanger comprising: a first-side plate having plural channels for coolant flow formed by dividers on a flat rectangular panel, a hole at one end of the channels, and a hole on a diagonal line to the first hole on a different side of the plate; a second-side plate having plural channels for coolant flow formed by dividers on a flat rectangular panel, a hole formed separately at one end of the channels continuously to the corresponding hole in the first-side plate, and a hole on a diagonal line to the first hole on a different side of the plate continuously to the corresponding hole in the first-side plate; and a seal plate between the first-side plate and the second-side plate, and characterized by the dividers of the channels in the second-side plate being positioned opposite the channels in the first-side plate, and the dividers of the first-side plate being positioned opposite the channels in the second-side plate, with the seal plate in between.
- A layer-built heat exchanger comprising: a first-side plate having plural channels for coolant flow formed by dividers on a flat rectangular panel, a hole at one end of the channels, and a hole on a diagonal line to the first hole on a different side of the plate; a second-side plate having plural channels for coolant flow formed by dividers on a flat rectangular panel, a hole formed separately at one end of the channels continuously to the corresponding hole in the first-side plate, and a hole on a diagonal line to the first hole on a different side of the plate continuously to the corresponding hole in the first-side plate; and a seal plate between the first-side plate and the second-side plate, and characterized by the first-side plate, the second-side plate, and the seal plate each having a different and identifying shape at the outside edge thereof.
- A layer-built heat exchanger according to Claim 2 wherein each of said first-side plates and the second-side plates is formed with convex members on different sides, and wherein each of said seal plates is formed with concave portions into which said convex members are inserted.
- A layer-built heat exchanger according to Claim 2 wherein each of the first-side plates has rounded corners and wherein each of the second-side plates has beveled corners, and wherein each of the seal plates has corners formed in a shape different from that of the corners of the first-side plate and the second-side plate.
- A layer-built heat exchanger comprising: a first-side plate having plural channels for coolant flow formed by dividers on a flat rectangular panel, a hole at one end of the channels, and a hole on a diagonal line to the first hole on a different side of the plate; a second-side plate having plural channels for coolant flow formed by dividers on a flat rectangular panel, a hole formed separately at one end of the channels continuously to the corresponding hole in the first-side plate; and a hole on a diagonal line to the first hole on a different side of the plate continuously to the corresponding hole in the first-side plate; a seal plate between the first-side plate and the second-side plate; an end plate provided on both ends; and inlet/outlet pipes for the first and second coolants provided on one of the end plates continuous to said holes such that the diameter of the holes in the first-side plate is smaller than the diameter of the inlet/outlet pipes.
- A layer-built heat exchanger comprising: a first-side plate having plural channels for coolant flow formed by dividers on a flat rectangular panel, a hole at one end of the channels, and a hole on a diagonal line to the first hole on a different side of the plate; a second-side plate having plural channels for coolant flow formed by dividers on a flat rectangular panel, a hole formed separately at one end of the channels continuously to the corresponding hole in the first-side plate, and a hole on a diagonal line to the first hole on a different side of the plate continuously to the corresponding hole in the first-side plate; a seal plate between the first-side plate and the second-side plate; an end plate provided on both ends; and inlet/outlet pipes for the first and second coolants provided on one of the end plates continuous to said holes such that the inlet/outlet pipes are inserted to the end plate on the other side and a long hole is provided in the inlet/outlet pipes through the length of the first-side plate, second-side plate, and seal plate layers.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96107852A EP0730132A3 (en) | 1990-09-28 | 1991-09-27 | Layer-built heat exchanger |
EP96107859A EP0730134B1 (en) | 1990-09-28 | 1991-09-27 | Layer-built heat exchanger |
EP96107853A EP0730133A3 (en) | 1990-09-28 | 1991-09-27 | Layer-built heat exchanger |
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP260992/90 | 1990-09-28 | ||
JP26099290A JP2741949B2 (en) | 1990-09-28 | 1990-09-28 | Stacked heat exchanger |
JP288725/90 | 1990-10-26 | ||
JP28872590A JP2741950B2 (en) | 1990-10-26 | 1990-10-26 | Stacked heat exchanger |
JP7287191A JP2877237B2 (en) | 1991-04-05 | 1991-04-05 | Stacked heat exchanger |
JP72871/91 | 1991-04-05 | ||
PCT/JP1991/001292 WO1992006343A1 (en) | 1990-09-28 | 1991-09-27 | Laminated heat exchanger |
Related Child Applications (6)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96107853A Division EP0730133A3 (en) | 1990-09-28 | 1991-09-27 | Layer-built heat exchanger |
EP96107859A Division EP0730134B1 (en) | 1990-09-28 | 1991-09-27 | Layer-built heat exchanger |
EP96107852A Division EP0730132A3 (en) | 1990-09-28 | 1991-09-27 | Layer-built heat exchanger |
EP96107853.2 Division-Into | 1996-05-17 | ||
EP96107859.9 Division-Into | 1996-05-17 | ||
EP96107852.4 Division-Into | 1996-05-17 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0503080A1 true EP0503080A1 (en) | 1992-09-16 |
EP0503080A4 EP0503080A4 (en) | 1994-06-08 |
EP0503080B1 EP0503080B1 (en) | 1997-04-23 |
Family
ID=27301059
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96107859A Expired - Lifetime EP0730134B1 (en) | 1990-09-28 | 1991-09-27 | Layer-built heat exchanger |
EP96107852A Withdrawn EP0730132A3 (en) | 1990-09-28 | 1991-09-27 | Layer-built heat exchanger |
EP91916786A Expired - Lifetime EP0503080B1 (en) | 1990-09-28 | 1991-09-27 | Laminated heat exchanger |
EP96107853A Withdrawn EP0730133A3 (en) | 1990-09-28 | 1991-09-27 | Layer-built heat exchanger |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96107859A Expired - Lifetime EP0730134B1 (en) | 1990-09-28 | 1991-09-27 | Layer-built heat exchanger |
EP96107852A Withdrawn EP0730132A3 (en) | 1990-09-28 | 1991-09-27 | Layer-built heat exchanger |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96107853A Withdrawn EP0730133A3 (en) | 1990-09-28 | 1991-09-27 | Layer-built heat exchanger |
Country Status (3)
Country | Link |
---|---|
EP (4) | EP0730134B1 (en) |
DE (2) | DE69125819T2 (en) |
WO (1) | WO1992006343A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996037746A1 (en) * | 1995-05-25 | 1996-11-28 | Luca Cipriani | Plate for plate-type heat exchanger, and heat exchanger provided with such plate |
GB2303910A (en) * | 1995-08-01 | 1997-03-05 | Behr Gmbh & Co | Heat exchanger with a stacked plate structure |
FR2752927A1 (en) * | 1996-08-31 | 1998-03-06 | Behr Gmbh & Co | Heat exchanger of plate stack structure |
US5911273A (en) * | 1995-08-01 | 1999-06-15 | Behr Gmbh & Co. | Heat transfer device of a stacked plate construction |
DE19639114B4 (en) * | 1995-08-01 | 2006-01-05 | Behr Gmbh & Co. Kg | Heat exchanger with plate stack construction |
DE19635455B4 (en) * | 1995-08-01 | 2007-02-15 | Behr Gmbh & Co. Kg | Heat exchanger with plate stack construction and method for its production |
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CN102003899B (en) * | 2010-12-01 | 2012-05-02 | 杭州沈氏换热器有限公司 | Microchannel heat exchanger |
DE102010063324A1 (en) * | 2010-12-17 | 2012-06-21 | Behr Gmbh & Co. Kg | Device for cooling charge air, system for conditioning charge air and intake module for an internal combustion engine |
KR101719545B1 (en) * | 2015-04-29 | 2017-03-27 | 린나이코리아 주식회사 | Heat Exchanger with Watercourse Part Structure Using Multifid Plate and the Method of Manufacturing Thereof |
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- 1991-09-27 DE DE69125819T patent/DE69125819T2/en not_active Expired - Fee Related
- 1991-09-27 EP EP91916786A patent/EP0503080B1/en not_active Expired - Lifetime
- 1991-09-27 EP EP96107853A patent/EP0730133A3/en not_active Withdrawn
- 1991-09-27 WO PCT/JP1991/001292 patent/WO1992006343A1/en active IP Right Grant
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996037746A1 (en) * | 1995-05-25 | 1996-11-28 | Luca Cipriani | Plate for plate-type heat exchanger, and heat exchanger provided with such plate |
US6070658A (en) * | 1995-05-25 | 2000-06-06 | Cipriani; Luca | Plate for plate-type heat exchanger, and heat exchanger provided with such plate |
GB2303910A (en) * | 1995-08-01 | 1997-03-05 | Behr Gmbh & Co | Heat exchanger with a stacked plate structure |
US5718286A (en) * | 1995-08-01 | 1998-02-17 | Behr Gmbh & Co. | Heat transfer device of a plate stack construction |
GB2303910B (en) * | 1995-08-01 | 1998-04-01 | Behr Gmbh & Co | Heat exchanger with a stacked plate design |
US5911273A (en) * | 1995-08-01 | 1999-06-15 | Behr Gmbh & Co. | Heat transfer device of a stacked plate construction |
DE19528117B4 (en) * | 1995-08-01 | 2004-04-29 | Behr Gmbh & Co. | Heat exchanger with plate stack construction |
DE19639114B4 (en) * | 1995-08-01 | 2006-01-05 | Behr Gmbh & Co. Kg | Heat exchanger with plate stack construction |
DE19635455B4 (en) * | 1995-08-01 | 2007-02-15 | Behr Gmbh & Co. Kg | Heat exchanger with plate stack construction and method for its production |
FR2752927A1 (en) * | 1996-08-31 | 1998-03-06 | Behr Gmbh & Co | Heat exchanger of plate stack structure |
Also Published As
Publication number | Publication date |
---|---|
EP0730134A3 (en) | 1998-01-14 |
EP0730132A3 (en) | 1998-01-14 |
EP0503080A4 (en) | 1994-06-08 |
DE69132499D1 (en) | 2001-02-08 |
EP0503080B1 (en) | 1997-04-23 |
DE69125819D1 (en) | 1997-05-28 |
DE69132499T2 (en) | 2001-04-19 |
EP0730132A2 (en) | 1996-09-04 |
EP0730134B1 (en) | 2001-01-03 |
EP0730133A3 (en) | 1998-01-14 |
WO1992006343A1 (en) | 1992-04-16 |
EP0730133A2 (en) | 1996-09-04 |
EP0730134A2 (en) | 1996-09-04 |
DE69125819T2 (en) | 1997-12-11 |
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