JP2008116138A - Heat exchange plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchange plate capable of improving efficiency of heat exchange through plates by adapting an irregular pattern which can easily adjust the ratio of size of each clearance caused between plates in a state where a heat exchanger is constituted to match each clearance to a difference in properties of each heat exchange fluid distributed thereto. <P>SOLUTION: In the irregular pattern in which a number of elevated parts 11 and recessed part 13 are regularly arranged, and an intermediate elevated part 12 and an intermediate recessed part 14 are disposed around each elevated part 11 and around each recessed part 13, respectively, the elevated heights and recessed depths are appropriately adjusted and set. Accordingly, the state of both sides of each plate can be easily set to a symmetric shape state in which the height of each elevated part is coincident on both sides of the plate or an asymmetric shape state in which it is varied between both the sides, and the size of each clearance between plates can be freely set in a state where a plurality of plates are superposed without changing the basic layout of the irregular pattern. Consequently, design of heat exchanger and plate manufacturing associated therewith can be flexibly and easily performed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a heat exchange plate obtained by molding a thin metal plate and integrated into a heat exchanger by combining a plurality of stacked plates, and in particular, due to the difference in properties of each heat exchange fluid flowing on each surface of the plate. Correspondingly, the present invention relates to a heat exchanging plate that has an uneven pattern shape that facilitates optimizing the flow path shape and can improve heat exchange efficiency.

  When using a heat exchanger that transfers heat between a high-temperature fluid and a low-temperature fluid (heat exchange), if you want to increase the heat transfer rate and improve the heat exchange performance, then plate-type heat exchange has been used. Many vessels were used. In this plate heat exchanger, a plurality of substantially plate-like plates are stacked in parallel at a predetermined interval, each plate is used as a flow channel, and each channel is supplied with a high-temperature fluid and a low-temperature fluid every other plate. It is a structure which makes it flow alternately and heat-exchanges through each plate.

  As the heat transfer surface shape of such a conventional plate type heat exchanger, a so-called herringbone type concave / convex pattern shape was often used, but it was difficult to reduce pressure loss and ensure pressure resistance strength with this shape. In recent years, various other concavo-convex pattern shapes have been proposed, for example, as disclosed in JP-A-2002-257488.

The plate in this conventional heat exchanger is formed in a square shape in the inner part of the seal part (gasket) so that it has a mountain shape in the thickness direction of the plate and the upper end part is flat, and when viewed from above. A plurality of heat transfer surface elements are provided, and a plurality of these plates are stacked to form one heat exchanger.
JP 2002-257488 A

  The conventional heat exchanger has a configuration shown in the above-mentioned patent document, and the plates in this conventional heat exchanger are stacked by alternately exchanging the upper and lower sides when configuring the heat exchanger. The front end part of the surface element in the projecting direction and the flow path crossing part (bottom part in the projecting direction) of the adjacent plate are in contact with each other, and the projecting direction of the heat transfer surface element is aligned in the same direction. As a result, the shape of each flow path sandwiching the plates is the same.

  In general, the two fluids that exchange heat with a heat exchanger are different substances, and their conditions such as pressure and flow rate during heat exchange are completely different. It is desirable to consider the heat transfer according to each fluid. However, if the flow path shapes on the front and back of the plate are the same, the heat transfer conditions for the plate will be almost the same, and two heat exchange fluids flowing through each flow path Therefore, it is necessary to provide the optimum heat transfer conditions corresponding to differences in temperature and properties of the two heat exchange fluids that exchange heat with the plate in between. The problem was that it was difficult to perform efficient heat exchange.

  The present invention has been made in order to solve the above-described problems, and adopts an uneven pattern that makes it easy to adjust the ratio of the sizes of the gaps generated between the plates in the state where the heat exchanger is configured. A heat exchange plate capable of optimizing the heat transfer performance between each fluid and the plate as a response to the difference in the properties of each heat exchange fluid flowing through the plate and improving the efficiency of heat exchange via the plate There is.

  The heat exchange plate according to the present invention is formed of a substantially metal plate-like body having a predetermined concavo-convex pattern, and a plurality of pieces are overlapped and integrated in a state where the convex portions are in contact with each other to constitute a heat exchanger, In the heat exchange plate for exchanging heat between one heat exchange fluid in contact with one surface side and another heat exchange fluid in contact with the other surface side, as the uneven pattern, A predetermined raised shape formed in a grid array arranged in a straight line at a predetermined pitch in a predetermined direction, and in a linear direction at the same pitch as or different from the pitch in another direction orthogonal to the one direction. A large number of raised portions are formed as recessed shapes recessed in the opposite direction to the raised direction of the raised portion at intermediate positions shifted by a half pitch respectively in the one direction and the other direction with respect to the arrangement of the raised portions on the one surface side. Provided with a recess. An intermediate raised portion having a raised shape lower than the raised portion and higher than the recessed portion is formed in a predetermined range around each raised portion, and the intermediate raised portion is formed in a predetermined range around each recessed portion. An intermediate recess that is a recess having a predetermined depth that is lower and shallower than the recess is formed, and a step serving as a boundary between the intermediate ridge and the intermediate recess is formed at an intermediate position between each adjacent ridge and the recess. The raised portion on the other surface side, which appears as the inverted shape of the recessed portion just on the back side of the intermediate recessed portion on the surface side, has the same shape as the intermediate raised portion, and the intermediate raised portion just on the back side of the intermediate raised portion on the one surface side The recessed portion on the other surface side that appears as the inverted shape of the portion has the same shape as the intermediate recess, and at least the portion excluding the raised portion and the recess has the same pattern shape on the front and back surfaces .

  As described above, according to the present invention, a large number of raised portions and recessed portions are regularly arranged, an intermediate raised portion is arranged around each raised portion, and an intermediate pattern among the uneven patterns in which an intermediate recessed portion is arranged around each recessed portion. The shape portion related to the raised portion and the intermediate recess is left unchanged, and the total height of the raised height of the raised portion relative to the intermediate raised portion and the depth of the recessed portion relative to the intermediate recessed portion is always constant, By adjusting and setting the dent depth appropriately, the plate front and back direction dimensions of the uneven pattern part are not changed, and the height of each raised shape part on each side of the plate front and back is the symmetrical shape And asymmetrical shapes with different heights can be easily set according to the purpose of use, and multiple plates can be stacked without changing the basic layout of the uneven pattern. Plates between the size of the gap in the state can be freely set, plates prepared with the design and this heat exchanger is flexibly and easily.

  In the heat exchange plate according to the present invention, the height at which the raised portion protrudes from the intermediate raised portion and the depth at which the recessed portion is recessed from the intermediate recessed portion have different values as necessary.

  As described above, according to the present invention, the protrusion height of each raised shape portion of the concavo-convex pattern which is the back side raised portion of the raised portion or the recessed portion is formed differently on the front and back of the plate, and a heat exchanger configuration in which a plurality of plates are overlapped In this state, depending on the protruding amount of the raised portion and the recessed amount of the concave portion, the gap on either side of the plate is different in shape and size from the gap on the other side, and the gap between the plates is generated. The flow rate and passage speed of each heat exchange fluid passing through each gap can be greatly different, and the two types of gaps can form different flow paths and exhibit different heat transfer performance, If each gap is appropriately matched to the properties of each heat exchange fluid and the inflow / outflow amount to the heat exchanger, the heat transfer between the plate and each fluid can proceed extremely efficiently, and the efficiency between the heat exchange fluids Ku heat exchange can be performed.

  Further, in the heat exchange plate according to the present invention, if necessary, the height at which the raised portion protrudes from the intermediate raised portion and the depth at which the recessed portion is recessed from the intermediate recessed portion have the same value, and the recessed portion on the one surface side The other surface that appears as the inverted shape of the raised portion on the other side is the same as the raised portion on the other surface side, and the raised portion on the other surface side that appears as the inverted shape of the recessed portion just on the back side of The concave portion on the side has the same shape as the concave portion, and has the same pattern shape on the front and back surfaces.

  As described above, according to the present invention, the protruding heights of the raised and recessed portions of the concavo-convex pattern which is the back side raised portion of the raised portion or the recessed portion are matched on the front and back sides of the plate, the concavo-convex pattern is molded as a symmetrical shape, and a plurality of plates are formed. When the heat exchanger is in a superposed state, any gaps on the front and back sides of the plate have the same shape and size and are generated between the plates, so that the heat transfer conditions for the plates are almost the same in the gaps on the front and back sides and flow through each gap. The two heat exchanging fluids can be handled under the same thermal condition, and depending on the temperature and nature of the two heat exchanging fluids that exchange heat with the plate in between, the shape of each gap on the front and back sides is different. Heat transfer conditions more appropriate than the case are given, and the heat exchange efficiency can be improved. In addition, if the plate center is set appropriately, the positional relationship of the unevenness can be reversed only by replacing the side position, and it is also possible to make a plurality of overlapping states in which each raised shape part is in contact with each other without inversion It is possible to realize the formation of a heat exchanger with one type of plate corresponding to the case where a plate end shape is used in which the front and back directions are overlapped in the same direction, and the manufacturing cost can be reduced.

  Further, in the heat exchange plate according to the present invention, if necessary, the raised portions are arranged in a straight line without interposing a concave portion therebetween, and the concave portions are arranged in a straight line without interposing a raised portion therebetween. With respect to the direction, a predetermined range of a portion surrounded by the intermediate raised portion and the intermediate recessed portion is located at an exactly middle position between adjacent raised portions, and a protruding portion protruding at the same height as the raised portion, and the predetermined direction In addition, a predetermined range of a portion surrounded by the intermediate raised portion and the intermediate concave portion at an exactly middle position between adjacent concave portions is a depressed portion that is depressed to the same depth as the concave portion.

  As described above, according to the present invention, the protrusion is formed at the intermediate position between the ridges, the depression is formed at the intermediate position between the recesses, and adjacent to each other in a heat exchanger configuration state in which a plurality of plates are stacked. In addition to being able to abut the ridges of the plates and the backside bulges of the recesses, the protrusions in the middle between the ridges and the backside protrusions in the middle of the recesses between the recesses abut each other. It is possible to greatly increase the number of contact points between matching plates, and each part of the concavo-convex pattern portion of the plate is supported at a number of locations from different plates on both sides of the front and back, greatly improving the strength in the joined state. Even if the pressure of the heat exchange fluid introduced between the plates increases, the gap shape is reliably maintained and heat exchange can be performed appropriately.

  Further, in the heat exchange plate according to the present invention, if necessary, the raised portion has a flat surface of a predetermined size as a top portion, and the concave portion has a flat surface of a predetermined size as a bottom portion. It is.

  As described above, according to the present invention, the ridges and the tops of the back side bulges of the recesses are flat, and the ridges of adjacent plates and the back side of the recesses in a heat exchanger configuration in which a plurality of plates are stacked. When the raised portions abut each other between the flat surfaces, it has a sufficient contact surface to ensure the strength, and when joining the plates by diffusion bonding, a sufficient bonding area is ensured and reliable bonding is obtained, Extremely high strength can be obtained at a large number of joints arranged in each part of the concave / convex pattern.

(First embodiment of the present invention)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 is a front view of a heat exchange plate according to the present embodiment, FIG. 2 is an enlarged view of a portion AB in FIG. 1, FIG. 3 is a sectional view taken along lines CC and DD in FIG. 2 is a cross-sectional view taken along the line EE, a cross-sectional view taken along the line FF, and a cross-sectional view taken along the line GG. FIG. 5 is a cross-sectional view taken along the line H-H in FIG. It is the one sectional view and other sectional views in the state of superposition of the plate for heat exchange.

  In each of the drawings, the heat exchange plate 10 according to the present embodiment is formed of a rectangular metal substantially plate-like body, is formed as a concavo-convex pattern to be press-molded, and is raised as one surface side, and is orthogonal Ridges 11 formed in a large number in a grid-like array state arranged at different predetermined pitches in two directions, and ridges at intermediate positions shifted by half a pitch in each of the two directions with respect to the arrangement of the ridge portions 11. A recessed portion 13 formed as a concave shape opposite to the portion 11, an intermediate raised portion 12 formed in a raised shape having a predetermined height lower than the raised portion 11 in a predetermined range around the raised portion 11, and a predetermined range around the recessed portion 13. It is a structure provided with the intermediate | middle recessed part 14 formed in the recessed shape of the predetermined depth shallower than the recessed part 13. FIG.

  The raised portions 11 are substantially frustoconical raised shapes on the plate surface side, arranged in a straight line in a plurality of rows at a predetermined pitch in a direction parallel to the plate long side direction, and parallel to the plate short side direction. In this configuration, a large number are molded in a grid-like arrangement in a plurality of rows in a straight line at a different pitch longer than the predetermined pitch. The raised portion 11 has a configuration in which the top portion 11a is formed as a substantially circular flat portion, and the outer peripheral surface end portion on the conical bottom side is formed into a curved surface shape that is smoothly continuous with the surrounding intermediate raised portion 12. .

  The concave portions 13 are arranged in a grid-like arrangement similar to the raised portions at intermediate positions shifted by a half pitch in the plate long side direction and the short side direction with respect to the arrangement of the raised portions 11 on the plate surface side. It is the structure shape | molded many as a concave shape dented in the reverse direction to the protruding direction. In the recess 13, the bottom portion 13 a is formed as a substantially circular flat portion, and the end portion of the inner peripheral surface opposite to the bottom portion 13 a is formed into a curved shape that is smoothly continuous with the surrounding intermediate recess 14. It is. The back side raised portion 15 to the other surface side which is just the back side of the concave portion 13 is raised in a substantially truncated cone shape.

  The raised portions 11 and the recessed portions 13 forming the concavo-convex pattern are arranged so that both side portions sandwiching the intermediate positions in the plate lateral direction or the longitudinal direction are symmetrical with respect to the rectangular heat exchange plate 10. The

  The arrangement of the raised portions 11 and the recessed portions 13 is such that the pitch in the long side direction of the plate is different from the pitch in the short side direction, so that the raised portions 11 and the recessed portions 13 are alternately arranged one by one. The direction of the alignment is a state inclined by approximately 30 ° with respect to the plate short side direction (inclined by approximately 60 ° with respect to the long side direction), and the planar shapes of the intermediate raised portions 12 and the intermediate concave portions 14 each form a rhombus. It becomes an uneven pattern. In addition, the uneven pattern of the heat exchange plate 10 is the same in each of the arrangement of the raised portions 11 and the recessed portions 13 in a pattern in which the pitch in the plate long side direction is longer than the pitch in the short side direction, or in two orthogonal directions. It may be configured to be formed as a pattern of a square lattice array arranged in a straight line at a predetermined pitch.

  The intermediate raised portion 12 is configured to be formed as a raised shape having a predetermined height lower than the raised portion 11 and higher than the recessed portion in a predetermined range around each raised portion 11. The intermediate recess 14 is formed as a recess having a predetermined depth lower than the intermediate ridge 12 and shallower than the recess 13 in a predetermined range around each recess 13.

  The boundary portion between the intermediate raised portion 12 and the intermediate recessed portion 14 is in a state where a level difference is generated, and this step is the raised portion 11 in the intermediate raised portion 12 and the recessed portion 13 in the intermediate recessed portion 14. It is the structure arrange | positioned in the exact middle position between. And the height which protrudes from the intermediate | middle protruding part 12 of the protruding part 11 is larger than the dent depth from the intermediate | middle recessed part 14 of the recessed part 13, and the protruding height of the protruding part 11 in the plate surface side is the recessed part 13 in the back surface side. It is the structure larger than the protrusion height of the back side raised part 15 of this.

  Further, the intermediate position where the intermediate raised portions 12 are adjacent to each other and the intermediate recessed portions 14 are adjacent to each other is an intermediate position between each raised portion 11 and another adjacent adjacent raised portion, and each recessed portion 13. It is also an intermediate position between the adjacent concave portion adjacent thereto and the plate front and back direction position, and the intermediate raised portion 12 and the intermediate concave portion 14 are just in the middle.

  This heat exchange plate 10 faces the same surface as the other plate of the same shape, and is integrated in a plurality of parallel states in which the top portions 11a of the raised portions 11 or the back side raised portions 15 of the recessed portions 13 are in contact with each other. The heat exchanger having a gap through which the heat exchange fluid can flow between each plate other than the abutting portion is configured, and one heat exchange fluid in contact with the plate surface side is in contact with the back surface side. Heat exchange with the heat exchange fluid. The raised portions of the plates are in contact with each other in an integrated state, and in some cases they are joined by diffusion bonding, etc., so they are strong and difficult to deform even when high pressure is applied between the plates. It is possible to cope with a state in which the change in the interval is suppressed and the pressure difference between the heat exchange fluids is large.

  In the state where the plates are superposed, the intermediate ridges 12 having a lower bulge height than the bulges 11 and the lower intermediate cavities 14 and cavities 13 are formed in one gap 51 on the bulge side of each bulge 11. Opposes at a predetermined interval. The small gaps generated between the intermediate raised portions 12 and the recessed portions 13 are combined to form one gap, which becomes one heat exchange fluid flow path. The flow path formed by the gap 51 changes the cross-sectional area of the flow path in accordance with the difference in the plate interval, and the flow path continues from one end of the plate to the other end while repeatedly expanding and contracting. ing.

  On the other hand, in the other gap 52 on the opposite side to the raised side of each raised portion 11, the raised portion 11 back side portions, the intermediate raised portion 12 back side portions, and the intermediate recessed portion 14 back side portions face each other at a predetermined interval. The small gaps between the facing portions are combined to form one gap. Similarly to the case of the one gap 51, the flow path of the other heat exchange fluid by the other gap 52 is continuous from one end of the plate to the other end while being repeatedly enlarged and reduced.

  The shape and size of the one gap 51 and the other gap 52 are different from each other in that the protruding height of the raised portion 11 from the intermediate raised portion 12 and the depth of the recessed portion 13 from the intermediate recessed portion 14 are different. Since certain plates are overlapped with the same surface facing each other, they are different from each other, and the size of the other gap 52 is smaller than that of the one gap 51. Each of the gaps 51 and 52 has different heat transfer characteristics based on the shape and size thereof. In consideration of the properties of the two fluids that perform heat exchange in advance, the heat transfer according to the two heat transfer characteristics is performed. The shapes and sizes of the gaps 51 and 52 are set by adjusting the protruding height of the raised portion 11 from the intermediate raised portion 12 and the depth of the recessed portion 13 from the intermediate recessed portion 14 so as to be characteristic. And the structure of the whole heat exchanger is also set so that the fluid for the heat exchange which has the property suitable for the characteristic may be each introduce | transduced into these clearance gaps 51 and 52, respectively.

  Next, the use state of the heat exchanger using the heat exchange plate according to the present embodiment will be described. In the heat exchanger configuration state in which a plurality of heat exchange plates 10 are overlapped and combined together, one heat exchange fluid flows into and out of one gap 51 on the raised side of each raised portion 11, When another heat exchange fluid is circulated in the other gap 52 on the opposite side of the raised direction of the raised portions 11 located between the gap 51 and the heat exchange plate 10, the gap between the two heat exchange fluids is increased. The heat exchange can be performed.

  The gaps 51 and 52 between the plates correspond to the concavo-convex pattern, and in each direction in which the raised portions 11 or the concave portions 13 are arranged, the gap portions sandwiched between the concave portions serving as main flow paths are linearly continuous. In addition, each of the two heat exchange fluids flowing through the gaps 51 and 52 is in a state of being orthogonal to each other, and the flow is changed to the heat exchange fluid regardless of whether the flow relationship is parallel flow, counter flow, or cross flow. Given substantially the same conditions, regardless of the orientation of the two fluids, the pressure loss in the flow path can be suppressed and the gaps 51 and 52 can be circulated smoothly and heat exchange can be performed efficiently. .

  For example, when the heat exchanging fluids are circulated in a flow relationship that is countercurrent to each other, each of the concave portions 51 that are arranged in the same manner as each of the raised portions 11 from a predetermined inlet side in one raised gap 51 of each raised portion 11. A single heat exchanging fluid flows through the flow path centered between the recesses 13 and the intermediate recesses 14 along each of the 13 rows.

  On the other hand, in another gap 52 on the opposite side to the raised side of each raised portion 11, other heat exchange fluid flows through the flow path centered between the concave portions on the back side of the raised portion 11 and the back side of the intermediate raised portion 12. It is in a state of flowing in a direction almost opposite to the case of the gap 51. The heat exchange fluids naturally merge and branch while proceeding through the gaps 51 and 52, respectively, and smoothly move to the front and back portions of the heat exchange plate 10.

  In this way, the heat exchange fluid spreads widely throughout the plate, which promotes heat transfer between the plate and each fluid, and has a unique shape that repeatedly expands and contracts between the plates, and the front and back of the plate. The heat exchange fluid circulates through the gaps 51 and 52 that are set in a shape that provides heat transfer characteristics that fully consider the properties of the heat exchange fluid on both sides, so that the heat exchange plate 10 and each heat exchange are exchanged. Heat transfer efficiently proceeds between the working fluids, and the heat exchange efficiency between the fluids is greatly improved.

  Thus, in the heat exchange plate according to the present embodiment, a large number of raised portions 11 and recessed portions 13 are regularly arranged, and intermediate raised portions 12 around each raised portion 11 are arranged around each recessed portion 13. Of the concavo-convex patterns in which the intermediate concave portions 14 are respectively arranged, the height of each bulge-shaped portion of the concavo-convex pattern which is the back-side bulge portion 15 of the bulge portion 11 or the concave portion 13 is formed differently on the front and back of the plate, and a plurality of plates are stacked In the combined heat exchanger configuration state, one gap 51 on the front and back of the plate has a shape and size different from that of the other gap 52 according to the protruding amount of the raised portion 11 and the recessed amount of the recessed portion 13 and is generated between the plates. Therefore, the flow rate and the passing speed of the heat exchange fluids passing through the gaps 51 and 52 on the front and back sides can be greatly different, and the two types of gaps 51 and 52 have different properties. It is possible to exhibit different heat transfer performance by forming a path, and if the gaps 51 and 52 are appropriately matched to the properties of the heat exchange fluid and the inflow and outflow amounts to the heat exchanger, the heat of the plate and each fluid Transmission can proceed very efficiently, and heat can be exchanged efficiently between fluids for heat exchange. In addition, by appropriately adjusting the protruding height of the raised portion 11 and the depth of the recessed portion 13, a plurality of plates were stacked without changing the basic pattern layout of the uneven pattern without changing the plate front / back dimension of the uneven pattern portion. In this state, the size of the gap between the plates can be freely set, and the heat exchanger design and the accompanying plate manufacturing can be performed flexibly and easily.

(Second embodiment of the present invention)
A second embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a cross-sectional view and another cross-sectional view of the heat exchange plate according to the present embodiment, and FIG. 8 is a cross-sectional view and a cross-sectional view of the heat exchange plate according to the present embodiment in an overlapped state.

  In each of the drawings, the heat exchanging plate 20 according to the present embodiment is similar to the first embodiment in that the raised portion 21, the recessed portion 23, the intermediate raised portion 22, and the intermediate recessed portion 24 are formed as an uneven pattern to be press-molded. In the first embodiment, the protruding amount of the protruding portion 11 from the intermediate protruding portion 12 and the protruding amount of the recessed portion 13 from the intermediate recessed portion 14 are different from each other, so that the protruding portions of the plate front and back are in a protruding state. In contrast to the configuration in which the front and back asymmetric shapes are formed, as a different configuration, the protruding amount of the raised portion 21 from the intermediate raised portion 22 and the recessed amount of the recessed portion 23 from the intermediate recessed portion 24 are the same. Alternatively, the protrusion height of each raised shape portion of the concavo-convex pattern which is the back side raised portion 25 of the concave portion 23 is matched on the front and back of the plate, and the concave and convex pattern including the intermediate raised portion 22 and the intermediate concave portion 24 And it has a configuration that referred shape.

  In the heat exchanger configuration state in which a plurality of plates are stacked, the shape of the gap 53 on the raised side of each raised portion 21 is the same as the shape of the gap 54 on the opposite side, so that the heat transfer condition for the plate Are substantially the same in the gaps 53 and 54 on the front and back sides, and the two heat exchange fluids flowing through the gaps 53 and 54 can be handled under the same thermal condition, and the two heat exchange fluids sandwiching the plate Depending on the temperature, properties, etc. of the heat exchange fluid, more appropriate heat transfer conditions can be provided than when the gap shapes on the front and back sides are different, and the heat exchange efficiency can be improved.

  Further, if the center of the entire plate is appropriately set to be an intermediate position between the predetermined ridges 21 and the recesses 23 adjacent to each other at the shortest distance in the concavo-convex pattern, the ridges 21 and the recesses 23 can be simply replaced by side positions. It is possible to reverse the positional relationship, and it is also possible to have multiple overlapping states where each raised shape part abuts without inversion of the front and back, plate end shape that overlaps with the front and back directions kept in the same direction In response to the case where the heat exchanger is employed, the heat exchanger can be formed with one kind of plate, and the manufacturing cost can be reduced.

(Third embodiment of the present invention)
A third embodiment of the present invention will be described with reference to FIGS. FIG. 9 is a partially enlarged view of the heat exchange plate according to the present embodiment, FIG. 10 is a cross-sectional view taken along lines JJ and KK of FIG. 9, and a cross-sectional view of the heat exchange plate according to the present embodiment. FIG.

  In each of the drawings, the heat exchanging plate according to the present embodiment, as in the first embodiment, has a raised portion 31, a recessed portion 33, an intermediate raised portion 32, and an intermediate recessed portion 34 as an uneven pattern to be press-molded. On the other hand, in the first embodiment, each of the ridges 11 has an intermediate position with another ridge 11 that is adjacent to each other without interposing the recess 13. It is also an intermediate position between adjacent recesses without being made, and the intermediate height between the intermediate raised portion 12 and the intermediate recess 14 in the height direction is different from this intermediate position. As for the portion, the protruding portion 36 in which each protruding portion 31 protrudes to the same height as the protruding portion 31 in the same direction as the protruding portion 31 in the plate short side direction arranged linearly without interposing the concave portion 33 therebetween. One As for the recessed portion 37 recessed at the same depth as the recessed portion 33, the protruding protruding portion 36 and the back side protruding portion 38 of the recessed portion 37 are arranged for the same position as the recessed portions 33 in the plate short side direction. Each plate has a configuration in which a plurality of plates are used as a contact portion between the plates, similar to the raised portion 35 of the raised portion 31 and the recessed portion 33 in the heat exchanger configuration state in which a plurality of plates are stacked.

  The protruding portions 36 in the middle between the raised portions 31 and the back side protruding portions 38 of the depressed portion 37 in the middle between the recessed portions 33 are in contact with each other, thereby greatly increasing the number of contact points between adjacent plates. Each part of the concavo-convex pattern part of the plate is supported at a number of locations from different plates on both the front and back sides, greatly improving the strength in the joined state, and the pressure of the fluid for heat exchange introduced between the plates can be increased. Even if the height is increased, the shape of the gaps 55 and 56 can be reliably maintained and heat exchange can be appropriately performed.

  In addition, in the heat exchange plate according to each of the first to third embodiments, the plate may have any configuration except that the plate is provided with a concavo-convex pattern having a predetermined shape, and is arranged around the concavo-convex pattern portion. The purpose of use of the heat exchanger is to determine the inflow and outflow positions of each heat exchanging fluid in the plate parallel state by appropriately setting the shape of the flange at the end of the plate and the presence / absence of the opening hole serving as the fluid flow path and the arrangement location, etc. It can arrange | position by the arrangement | positioning suitable for.

  Further, in the heat exchange plate according to each of the first to third embodiments, the shape of the raised portion is a substantially truncated cone shape, and the recessed shape is such that the back side raised portion is substantially a truncated cone shape. However, the present invention is not limited to this, and the shape of the raised portion is a substantially polygonal frustum shape that is a combination of a raised shape or a flat surface with an arbitrary curved surface, and the recessed shape is the same shape as the raised portion on the back side. It can also be set as the structure formed in the predetermined dent shape which becomes. Further, the intermediate raised portion and the intermediate concave portion can be formed by a combination of arbitrary curved surfaces and flat surfaces.

  In addition, in the heat exchange plate according to each of the first to third embodiments, when configuring the heat exchanger, the same plate is reversed every other and overlapped, and one type of heat exchanger configuration is provided. However, the present invention is not limited to this, but not limited to this. When all the plates constituting the heat exchanger have the same flange shape at the plate end and are required to overlap in the same direction, for example, In the case of a flange shape in which the plates are overlapped while being in direct contact with each other in a superposed state, joined together by brazing, etc., and no flanges are formed on the side surfaces, or a flange shape in which a gasket is interposed between them, Two different types of plates are used, using different plates with the same shape but with the concavo-convex pattern reversed, and every other one is different. If it is a combination that superimposes the rate, it can be made into a heat exchanger by bringing the raised shape parts into contact with each other and integrating them in a strong overlapping state as in the case of one type of plate, and with the same shape Supports various types of heat exchangers, such as obtaining a state in which heat is exchanged between one heat exchange fluid in contact with one surface and another heat exchange fluid in contact with the other surface Can be achieved.

It is a front view of the plate for heat exchange which concerns on the 1st Embodiment of this invention. It is an AB partial enlarged view of FIG. It is CC sectional drawing and DD sectional drawing of FIG. It is EE sectional drawing of FIG. 2, FF sectional drawing, and GG sectional drawing. It is HH sectional drawing of FIG. 2, and II cut part end surface. It is the one sectional view and other sectional views in the state of superposition of the plate for heat exchange concerning a 1st embodiment of the present invention. It is the one sectional view and other sectional view of the plate for heat exchange concerning a 2nd embodiment of the present invention. It is the one sectional view and the other sectional view in the state of superposition of the plate for heat exchange concerning the 2nd embodiment of the present invention. It is a front view of the plate for heat exchange which concerns on the 3rd Embodiment of this invention. It is JJ sectional drawing of FIG. 9, KK sectional drawing, and the lamination | stacking state sectional drawing of the plate for heat exchange which concerns on the 3rd Embodiment of this invention.

Explanation of symbols

10, 20, 30 Heat exchange plate 11, 21, 31 Raised portion 11a Top portion 12, 22, 32 Intermediate raised portion 13, 23, 33 Recessed portion 13a Bottom portion 14, 24, 34 Intermediate recessed portion 15, 25, 35 Backside raised portion 36 Protruding portion 37 Depressed portion 38 Back side protruding portion 51, 53, 55 Clearance 52, 54, 56 Clearance

Claims (5)

One heat exchange that is formed of a substantially metal plate-like body having a predetermined concavo-convex pattern and is stacked and integrated with a plurality of protrusions in contact with each other to form a heat exchanger and contact on one surface side In the heat exchange plate for exchanging heat between the working fluid and the other heat exchanging fluid in contact with the other surface side,
As the concavo-convex pattern, a lattice is linearly arranged on one surface side with a predetermined pitch in a predetermined direction and linearly with the same pitch as or different from the pitch in another direction orthogonal to the one direction. A plurality of ridges of a predetermined ridge shape formed in the shape of an array, and opposite to the ridge protrusion direction at an intermediate position shifted by half a pitch in each of the one direction and the other direction with respect to the arrangement of the ridge portions on the one surface side With a plurality of recessed portions formed as recessed shapes recessed in the direction,
In the predetermined range around each raised portion, an intermediate raised portion having a raised shape with a predetermined height lower than the raised portion and higher than the recessed portion is formed,
An intermediate recess is formed in a predetermined range around each recess, the recess being a recess having a predetermined depth that is lower than the intermediate protuberance and shallower than the recess.
A step which is a boundary between the intermediate raised portion and the intermediate concave portion is formed at an intermediate position between each adjacent raised portion and the concave portion,
The raised portion on the other surface side, which appears as the inverted shape of the recessed portion just behind the intermediate recessed portion on the one surface side, has the same shape as the intermediate raised portion, and just behind the intermediate raised portion on the one surface side. The other surface-side recessed portion that appears as the inverted shape of the intermediate raised portion has the same shape as the intermediate recessed portion, and at least the portion excluding the raised portion and the recessed portion has the same pattern shape on the front and back surfaces. Replacement plate. In the heat exchange plate according to claim 1,
The heat exchanging plate, wherein the height at which the raised portion protrudes from the intermediate raised portion and the depth at which the recessed portion is recessed from the intermediate recessed portion have different values. In the heat exchange plate according to claim 1,
The height at which the raised portion protrudes from the intermediate raised portion and the depth at which the recessed portion is recessed from the intermediate recessed portion have the same value,
The raised portion on the other surface, which appears as the inverted shape of the recessed portion just on the back side of the recessed portion on the one surface side, has the same shape as the raised portion, and the raised portion on the opposite side of the raised portion on the one surface side. A heat exchanging plate, wherein a concave portion on the other surface side that appears as an inverted shape has the same shape as the concave portion, and has the same pattern shape on the front and back surfaces. In the heat exchange plate according to claim 1 or 2,
The raised portions are arranged in a straight line without interposing a concave portion, and the concave portions are arranged in a straight line without interposing a raised portion, and the intermediate protuberance is located at an intermediate position between adjacent protuberant portions in a predetermined direction. The predetermined range of the part surrounded by the part and the intermediate recess is a protruding part protruding at the same height as the raised part,
With respect to the predetermined direction, a predetermined range of a portion surrounded by the intermediate raised portion and the intermediate concave portion at an intermediate position between adjacent concave portions is a depressed portion that is depressed to the same depth as the concave portion. Replacement plate. In the heat exchange plate according to any one of claims 1 to 4,
The raised portion has a flat surface of a predetermined size as a top portion;
The concave portion has a flat surface having a predetermined size as a bottom portion.

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