• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Fold plate heat exchanger and assembly procedure. It consists of a box or casing whose six walls are assembled together once a plate with longitudinal folding has been arranged within the volume of the box; existing on the side edges of the plate two tabs that are trapped, each, in the corresponding unión between a side wall and one of the top or bottom caps. The ends of the plate with its folds adhere to the caps at the ends of the boxes, using resin or silicone. Two semi-spaces are thus defined inside the box, with a large thermal contact surface between them, by the folds. For each half-space circulates a fluid of those that exchange heat. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2631955A1
    申请号:ES201600926
    申请日:2016-11-04
    公开日:2017-09-06
    发明作者:Francesc Martínez-Val Piera；Juan MARTÍNEZ-VAL PIERA；Javier CANO NOGUERAS；Julio SAN MILLÁN
    申请人:Fundacion para el Fomento de la Innovacion Industrial；
    IPC主号:
    专利说明:

    DESCRIPTION

    Folded plate heat exchanger and assembly procedure.

    Technical sector 5

    The invention falls within the field of thermal engineering, particularly that of heat exchangers, which are widely used components in various industries and in residential applications.
     10
    Technical problem to solve and background of the invention

    Within the field of heat exchangers there is a wide variety of configurations, materials, types of fluids, pressure level, and other variables. It could be said that there is also some specialization of the exchangers 15 depending on their use. In that sense, the exchanger presented here could fit into the air-to-air heat recuperators; although its use could be extended to other purposes.

    The problem is to configure a structural system with adequate mechanical resistance, which offers a large area of thermal exchange, which uses cheap materials, and which is easy to build, which leads to competitive prices.

    More specifically, the elementary plate exchanger is used as the basis for the problem, which can be defined as a closed box in which it is located, fixing it on the walls of the box, a plate that divides the volume of said box 25 in two ; that due to the use of space and material, it should be elongated and not very high, placing the intermediate plate in the virtual middle plane that is perpendicular to the shortest dimension of the box, although in reality the plate can be located in any way , provided that the internal space of the box is divided into two separate semi-spaces. By making the appropriate openings in the walls of the box, the semi-spaces are configured so that hot fluid circulates through one of them, which cools, and cold fluid flows through the other half-space, which is heated.

    Several documents that state the state of the art are briefly discussed below: 35

    US2016 / 0273842A1 describes a basic plate exchanger, useful for cooling electronic components

    KR101431395B1 describes a typical plate exchanger design 40

    CN203893728A presents a multilayer exchanger that can be considered basic or reference

    RU2585130C1 describes an exchanger with many layers of corrugated sheets, 45 so the effect is that it is a very heavy, very compact and high concentration exchanger, but nevertheless does not include description of the connection of the fluids from the outside with the parts corresponding internal.

    CN103383209A describes an interchanger with several plates with folds, in 50 stacked position, but without touching each other, so the problem is how to maintain that arrangement and how fluid currents between layers are introduced, of which this document does not describe any contribution (It is supposed to be resolved with other future patents)
    CN203823956U presents a cross flow changer, which in one of its directions has a folding that improves heat transmission (as if the folding were a set of fins)

    US2014 / 0290924A1 describes an exchanger with tubes that are not circular, but of a triangular section, so that they retain a certain analogy with the sharp edge bends

    JP2016047967A presents a variant of the plate exchanger, which contains internal structures in certain plates made for other applications that imply greater pressure differences between the faces of the plates 10

    JP2015194324A describes an alternative arrangement of multilayers, but does not address the problem of connecting external circuits with the interior

    The problem to be solved is to establish materially the separation between the two semi-spaces of the fluids that are respectively cooled, which we will call semi-hot space, and of the fluid that is heated, which we will call semi-cold space; said separation involving a physical separation surface, which is that of thermal contact between semi-spaces, which is much larger than the straight section of the box, in its larger size, which we will denote as horizontal, to refer to the semi-spaces 20 with geometric precision, as superior, above the plate, and inferior, below it.

    Explanation of the invention.

    The invention consists of:

    - a box of thermal insulating material, composed of six faces, paired two to two opposite each other and said pair of faces forming the closures of the box in one direction, each pair of faces being identified according to their position with respect to the direction of movement of the fluids that exchange heat, and calling end caps 30 to those that are perpendicular to said direction of movement; upper and lower covers to the plates that close the box above and below; and lateral closures to the vertical walls that close the box when its edges are tightly joined to the end faces and the covers;
     35
    - a plate with continuous folds being arranged inside the box, selected between folds of sharp edge, wavy folds, rectangular folds or folds of any other geometry, not necessarily regular repetitive, which maintain the physical continuity of the original plate, being separated the interior of the box in two semi-spaces, one above the folded plate 40, and another below;

    - the folded plate being topped on its sides by remaining tabs, each of them by its side, trapped between an edge of one of the side closures and a top or bottom lid of the box, securing the entrapment by the 45 action of a seal that runs along said side edge;

    - and the folded plate being secured on each end face of the box by inserting it in a layer selected from adhesive putty, setting silicone, solidifiable elastomer paste or any substance that acts as mortar, 50 thus embedding the ends of the plate folded in said solidified layer of adhesion to the end faces of the box;

    - these extreme faces and their adhesive layers being traversed by tubes which by their position unequivocally correspond to a connection with the upper or lower half-space;

    - grouping in one bundle all the connecting pipes that connect with the upper half-space, and in another bundle all the connecting pipes with the lower half-space.

    The invention can be applied again to each semi-space delimited by the first or main folded plate, above or below it, by providing a secondary plate, of similar characteristics to the main one, in an intermediate position within one of these semi-spaces, delimiting two differentiated sub-semi-spaces within the original semi-space, and the secondary plate being trapped on its sides by its flanges, which are gripped by the side joints that are tightened by the joining of the panels sides with the corresponding cover of the 15 box. This tightening can be done by screws, or by flanges, or by previous brackets. The subdivision of a previous sub-space into two independent volumes, is applied repeatedly as required, observing in each case that the penetrations of tubes by each end face are grouped together as they correspond to the fluid that cools or to which heats up. twenty

    As a variant of the invention, the assembly is described in which the tubes that cross the end faces, which are left without any gaps, are eliminated, producing the entry or exit of the fluid that moves through each semi-space, through openings in the extreme parts of each lid, upper and lower, these openings being the total gap remaining at each end of each lid, if it does not close with the extreme face of the box on that side.

    Explanation of the figures
     30
    The figures, in general, are not to scale, since the relative sizes of the elements are very different: but they are representative of the invention and its operating principles.

    Figure 1a shows a diagram, in straight section, of a plate with longitudinal folds and side flanges, and Figure 1b shows said folded plate or plate, inserted in a box that is the one that houses the heat exchanger.

    Figure 2 shows in perspective the scheme of the assembly of the invention, although the faces are not represented in the figure, but the tubes that pass through them, to conduct the inlet and outlet of each fluid.

    Figure 3a shows the inner face of an end cap, where the putty, setting silicone, or adhesive elastomer can be seen, around the end of the folded plate, and 3b shows the same, but in profile elevation. Four. Five

    Figure 4a corresponds to a longitudinal folding in right angles, and in 4b the same folding is shown including adhered stops that are placed at the ends of the fold faces, and serve to prevent the space between folds from closing. fifty

    Figure 5a corresponds to the arrangement of inlet and outlet tubes of the fluids circulating through each semi-space in a plate with rounded folds, and 5b shows the end cap with the penetrations coinciding with the tubes of the 5th.
    Figure 6 represents an assembly with several internal plates, which leave confined space between them for a fluid to pass.

    Figures 7a and 7b show the assembly in which there are no penetration tubes through the end caps, but the inlets and outlets of each fluid are produced by both ends of the top and bottom covers.

    Figure 8 completes the graphic information on the case shown in Figures 7a and b.

    To facilitate the understanding of the figures of the invention, and their modes of realization, the relevant elements of the invention are listed below:

    1. Iron or plate in which the folds are made

    2. Folds of sharp edge 15

    3. Iron side tabs

    4. Longitudinal seal with trapped flange
     twenty
    5. Top cover of the case that constitutes the exchanger

    6. Side facing of said box

    7. Bottom cover of the case that constitutes the exchanger 25

    8. Side facing of said box, opposite to 6

    9. Pipes that pass through the end caps of said box, and connect with the upper half-space. The tubes identified with 9i connect to the lower half space 30

    10. Straight angle pleated iron

    11. Iron with rounded folds
     35
    12. Drills in the end caps to connect with a given semi-space, in this case the lower one

    13. Drills in the end caps to connect with a given semi-space, in this case the upper 40

    14. One of the extreme covers

    15. The end cap opposite the previous one
     Four. Five
    16. Folded plate included in the box under plate 1

    17. Folded plate included in the box under plate 16

    18. Connecting tubes with the enclosure space confined between the plate 1 and the upper cover 50

    19. Connecting tubes with the enclosure space confined between plate 1 and plate 16

    20. Connecting tubes with the enclosure space confined between plate 16 and plate 17

    21. Connecting pipes with the enclosure space confined between the plate 17 and the bottom cover 7
     5
    22. Entry of the fluid into the upper half space in the transverse opening variant

    23. Upper half-space fluid outlet in the transverse opening variant

    24. Inlet of the fluid to the lower half space in the transverse opening variant 10

    25. Lower half-space fluid outlet in the transverse opening variant

    26. Silicone forging or bonding elastomer adhesive cords
     fifteen
    27. Either of the two end caps, on which the ends of the folded plates are fixed

    28. Adhered stops to avoid closing the space between folds.
     twenty
    Embodiment of the invention

    The invention is embodied by assembling the six walls that make up the exchanger housing. The assemblies must be made hermetically, by any procedure to use, without this being covered by the invention. What is covered by the invention are the joints between a lateral (vertical) facing and a top or bottom cover, in which a lateral flange of the folded plate is fitted, which is trapped in that joint, along of all of it, using a joint, simple or double, hermetically sealed, its material selected from rubber, silicone, plastic or any material that has an elastic deformation field that covers the maximum expected distortion in the plane of the flange .

    From the six sides of the box, plus the folded plate and with its two side tabs, plus the joints, plus the screws, brackets or flanges of conventional connection between walls of the chosen material, the assembly procedure is composed of a first phase of joining the two lateral walls to the upper and lower covers, trapping each lateral flange of the plate in its corresponding connection between a lateral wall and one of said covers; and of a second phase in which the end caps are assembled, in which silicone or resin cords or setting elastomer are previously adhered, the cords having the same geometric configuration 40 as the straight section of the plate with the folds, each cover adjusting to the rectangle formed by the previous assembly between the upper and lower covers and the side walls, each end of the plate being completely embedded in the inner adhesive cords of each end cap.
     Four. Five
    In the basic version of the invention, each cover must come with the drills made in the places provided so that they are above or below the zigzag row of the adhesive cords, or with the tube fittings inserted in said holes.

    In the version of multiple plates, and therefore multiple sub-spaces individually confined, the covers must be prepared with the corresponding multiplicity of zigzag adhesive cords, and the corresponding holes in the areas between cords.

    In the version of end caps without drills, the upper and lower covers are shorter than the side walls, but the first phase includes the assembly of said walls and covers, including the eyelashes' trapped socket in their corresponding joint; and the second phase is the same as that described in the basic procedure, only that each end cap only joins the ends of the side walls, but not the top and bottom covers; having edemas that join the free spaces left in the upper and lower covers to the external means, or conduits, that are used to carry or carry each fluid.

    When the folds leave little space between them, it is advisable that the assembly 10 includes stops attached to one of the faces that give the intermediate space, and bump with its tip or face against the opposite face, in said space. Under these conditions, when fixing the ends of the folded iron on the corresponding end plates, instead of depositing the resin or silicone cords on the inner faces of the end caps, a complete patina of adhesive material is deposited on them which 15 the edges of the folding are nailed, of that end.

    The materials to be used must be compatible with each other, which depends on the function to be performed by the exchanger. It must also be taken into account that the stiffness required of the plate, and of each of its folds, depends on the difference in pressures between both fluids, and therefore the thickness of the plate must be greater for greater pressure differences.

    As a representative example, it is possible to set out the recovery of heat in the ventilation of premises in winter. Assume a room temperature of 20ºC and outside of 25 -10ºC; and that an air mass of 0.30 kg / s with a density of 1.2 kg / m3 has to be renewed; which implies a flow of 0.25 m3 / s (which actually fluctuates slightly due to temperature variations from one part to another). If we choose 2.5 m / s as the design speed, the straight section of each circuit, the entrance and exit of the ventilation, will be 0.1 m2, which in total make 0.2 m2 of straight section of box. If 30 we take a height of 0.2 m, the width would be 1 m. If the zigzag arrangement of the folding is that the distance between vertices of successive folds is 0.01 m, there will be 100 folds, each 0.2 m, which totals 20 m in length of the zigzag. To calculate the necessary length it is necessary to specify what thermometric performance we want, and what is the coefficient of heat transmission that is through the plate. 35 The latter is dominated by air convection, and with the chosen speed it will be around 10 W / m2 · K, and we choose this amount by rounding calculation. If we now look for an 80% thermometric performance, it will mean that the flow temperature of the air that comes from outside, once heated in our recuperator, will be 0.8 (20 - (- 10)) = 14ºC. That means that the average log temperature difference 40 between the output and the input current is 6 ° C, and therefore we have that the thermal power transmitted is

    Q = 0.30 (kg / s) 1 (kJ / kgK) 24 (K) = 7.2 kW
     Four. Five
    As the air is heated from outside 24ºC (or 24 K) and its specific heat is 1 (kJ / kg · K), which leads to 7.2 kW; which leads to require an area of heat transfer A dad by

    7,200 = 10 W / m2 · K · 6 (K) · A (m2)
     fifty
    What gives A = 120 m2, which implies 6 m in length. In principle it can be considered that this length is too long, especially to make the folding very regularly. That problem is palliated by connecting several exchangers in series. For example 6 of 1 m.
    It should be noted that for this purpose plastic or wood can be used for the walls, and aluminum (paper type or somewhat thicker) for the plate, although plastic, of reduced thickness, could also be used. Even if its conductivity were bad, of 0.5 W / m · K for example, if its thickness is 0.5 mm its equivalent transmission coefficient would be 1000 W / m2 · K, that is, its thermal resistance would be negligible. compared to the one that opposes air convection.

    Once the invention is clearly described, it is noted that the particular embodiments described above are subject to modifications in detail as long as they do not alter the fundamental principle and essence of the invention. 10
    权利要求:
    Claims (6)
    [1]

    1. Folded plate heat exchanger, consisting of a box of thermal insulating material, composed of six faces, paired two to two opposite each other and said pair of faces forming the closures of the box in one direction, identifying 5 each pair of faces according to their position with respect to the direction of movement of the fluids that exchange heat, and calling end caps to those that are perpendicular to said direction of movement; upper and lower covers to the plates that close the box above and below; and lateral closures to the vertical walls that close the box when its edges are tightly joined to the extreme faces and to the covers, characterized in that
    - a plate or plate with continuous folds, selected between folds of sharp edge, wavy folds, rectangular folds or folds of any other geometry, not necessarily regular repetitive, which maintain the physical continuity of the plate is arranged inside the box original, the interior of the box being separated into two semi-spaces, one above the folded plate, and another below;
    - the folded plate being topped on its sides by remaining tabs, 20 each of them by its side, caught between an edge of one of the side closures and a top or bottom lid of the box, securing the entrapment by the action of a seal that runs along said side edge;
    - and the folded plate being secured on each end face of the box by its insertion in a layer selected between adhesive putty, setting silicone, solidifiable elastomer paste or any substance that acts as mortar, thus embedding the ends of the plate folded in said solidified layer of adhesion to the end faces of the box;
     30
    - these extreme faces and their adhesive layers being traversed by tubes which by their position unequivocally correspond to a connection with the upper or lower half-space;
    - grouping in one bundle all the connecting pipes that connect with the upper half-space, and in another bundle all the connecting pipes with the lower half-space.

    [2]
    2. Folded plate heat exchanger, according to claim one, characterized in that a secondary plate is disposed, with characteristics analogous to the main one, in an intermediate position within one of the semi-spaces between the main plate and one of the covers, upper or lower, delimiting the secondary plate two different sub-semi-spaces within the original semi-space, and the secondary plate being trapped on its sides by its tabs, which are gripped by the side joints that are tightened by the they joined the side panels with the corresponding lid 45 of the box, producing in each case that the penetrations of tubes by each end face are grouped together as they correspond to the fluid that cools or heats up.

    [3]
    3. Folded plate heat exchanger, according to claim one, characterized in that the inlet and outlet of the fluid that moves through each half-space is produced through openings in the end portions of each top and bottom lid, These openings can be the total gap left at each end of each lid, if it does not close with the extreme side of the box on that side.
    [4]
    4. Folded plate heat exchanger assembly method, according to claim one, characterized in that the assembly consists of a first phase of joining the two lateral walls to the upper and lower covers, trapping each side flange of the plate in its joint corresponding between a side facing and one of the said covers; and of a second phase in which the end caps are assembled, 5 in which silicone or resin cords or setting elastomer are previously adhered, the cords having the same geometric configuration as the straight section of the plate with the folds, each cover being adjusted to the rectangle formed by the previous assembly between the upper and lower covers and the side walls, each end of the plate being completely embedded in the inner adhesive cords 10 of each end cover; each end cap having the holes made in the places provided so that they are above or below the zigzag row of the adhesive cords.

    [5]
    5. Assembly procedure of folded plate heat exchanger, according to 15 first, third and fourth claims, characterized in that the assembly includes stops attached to one of the faces that give the intermediate space between folds, and bump said stops, with their tip or count, against the opposite face in said space.

    [6]
    6. Assembly procedure of folded plate heat exchanger, according to 20 first, third and fourth claims, characterized in that the resins or the silicone, or the adhesive is fixed on the inner faces of the end caps as a complete patina of material, in which the edges of the folding of the iron are nailed, by the corresponding end.
     25
    类似技术:
    公开号 | 公开日 | 专利标题
    FI64460C|1983-11-10|ANORDING VIDEO DEVICE FOR SENSIBEL OCH / ELLER LATENT VARMEOEVER FOERING
    ES2652499T3|2018-02-02|Plate heat exchanger plate and plate heat exchanger
    BR0202426A|2003-04-29|Fully welded plate heat exchanger
    RU2012148703A|2014-05-27|EXCHANGE HEAT EXCHANGER CONTAINING EXTERNAL HEAT EXCHANGE PLATES WITH IMPROVED ACCESSORIES TO THE SIDE PANELS
    ES2631955B1|2018-06-21|Folded plate heat exchanger and assembly procedure
    SE1251193A1|2014-04-23|Plate heat exchanger plate and plate heat exchanger
    US3633661A|1972-01-11|Crossflow plate-type heat exchanger with barrier space
    FI865043A|1986-12-10|VAERMEVAEXLARE.
    JP2005282907A|2005-10-13|Heat exchanger
    WO2015044882A1|2015-04-02|Device for stiffening and sealing a solar collector
    JP6509337B2|2019-05-08|Heat exchange ventilation system
    JP2017089937A|2017-05-25|Heat exchanger
    CN208704509U|2019-04-05|Equalizing plate structure
    CA1038369A|1978-09-12|Heat exchanger and heat recovery system
    CN105593955B|2018-01-12|Portable thermal for corrugated transformer tank exchanges panel
    JPWO2019131569A1|2020-12-10|Header plateless heat exchanger
    JPWO2019131571A1|2020-12-10|Header plateless heat exchanger
    US20200080790A1|2020-03-12|Total heat exchange element, method of manufacturing total heat exchange element, and total heat exchanger
    JP2019132549A|2019-08-08|Outdoor unit of air conditioning device
    KR200343786Y1|2004-03-06|Plate type heat exchanger
    JP6509338B2|2019-05-08|Heat exchange ventilation system
    SE521382C2|2003-10-28|Cross current type heat exchanger
    CN110530190A|2019-12-03|Header and heat exchanger
    JP2005214587A|2005-08-11|Heat exchanger
    JP2008261562A|2008-10-30|Heating element storage box cooling device
    同族专利:
    公开号 | 公开日
    ES2631955B1|2018-06-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US574157A|1896-12-29|ljtjngstrom |
    GB846994A|1958-02-28|1960-09-07|Paxman & Co Ltd Davey|Improvements in or relating to plate-type heat exchangers|
    CA1038369A|1974-05-01|1978-09-12|Des Champs Laboratories|Heat exchanger and heat recovery system|
    JP2000097589A|1998-09-24|2000-04-04|Showa Alum Corp|Tube for heat exchanger|
    JP2002333295A|2001-05-09|2002-11-22|Furukawa Electric Co Ltd:The|Heat exchanger|
    US20040035567A1|2002-06-12|2004-02-26|Quang Duong|Double sided heat exchanger core|
    法律状态:
    2018-06-21| FG2A| Definitive protection|Ref document number: 2631955 Country of ref document: ES Kind code of ref document: B1 Effective date: 20180621 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201600926A|ES2631955B1|2016-11-04|2016-11-04|Folded plate heat exchanger and assembly procedure|ES201600926A| ES2631955B1|2016-11-04|2016-11-04|Folded plate heat exchanger and assembly procedure|
    [返回顶部]