WO2015113468A1 - 热交换板和具有该热交换板的板式热交换器 - Google Patents

热交换板和具有该热交换板的板式热交换器 Download PDF

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Publication number
WO2015113468A1
WO2015113468A1 PCT/CN2015/070667 CN2015070667W WO2015113468A1 WO 2015113468 A1 WO2015113468 A1 WO 2015113468A1 CN 2015070667 W CN2015070667 W CN 2015070667W WO 2015113468 A1 WO2015113468 A1 WO 2015113468A1
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Prior art keywords
heat exchange
exchange plate
plate according
board
plate
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PCT/CN2015/070667
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English (en)
French (fr)
Inventor
魏文建
张志锋
伊兹托克·格洛比克
Original Assignee
丹佛斯微通道换热器（嘉兴）有限公司
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Application filed by 丹佛斯微通道换热器（嘉兴）有限公司 filed Critical 丹佛斯微通道换热器（嘉兴）有限公司
Priority to RU2016134310A priority Critical patent/RU2643999C1/ru
Priority to KR1020167022652A priority patent/KR102291431B1/ko
Priority to BR112016017461-5A priority patent/BR112016017461B1/pt
Priority to ES15743601T priority patent/ES2743528T3/es
Priority to JP2016548725A priority patent/JP6660882B2/ja
Priority to US15/114,883 priority patent/US10274261B2/en
Priority to EP15743601.5A priority patent/EP3101376B1/en
Priority to MX2016009930A priority patent/MX371193B/es
Publication of WO2015113468A1 publication Critical patent/WO2015113468A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/044—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being pontual, e.g. dimples
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning

Definitions

  • the invention relates to the field of heat exchangers.
  • the present invention relates to a heat exchange plate and a plate heat exchanger having the heat exchange plate.
  • the plate heat exchanger In recent years, plate heat exchangers have been widely used in equipment such as air conditioners, refrigerators, chillers, heat pumps, and the like.
  • the plate heat exchanger includes a plurality of heat exchange plates which are joined together by means such as brazing, all welding, semi-welding or the like, or detachably joined together, and a space between them is formed for heat exchange.
  • FIG. 1 (a) shows a common heat exchange plate having a herringbone pattern.
  • the heat exchange plate has a plate main body having a chevron pattern of irregularities on the entire surface of the plate main body.
  • Such a heat exchange plate can provide a good fluid distribution over the entire surface of the plate body, thereby enabling high heat exchange efficiency.
  • the herringbone pattern of the heat exchange plates adjacent to each other is installed in the opposite direction, for example, by brazing, all welding or semi-welding, or in a detachable manner. That is, a corresponding set of chevron patterns on two adjacent heat exchange plates have only two mounting contact points when installed, which makes the strength of the entire plate heat exchanger low.
  • the thickness of such a heat exchange plate should not be too thin, otherwise there would be a problem that the strength is not satisfactory, so that the reliability of the entire plate heat exchanger is lowered.
  • Figure 1 (b) shows another common heat exchange plate having a "dimple" pattern.
  • the heat exchange plate has a plate main body having a plurality of convex portions and concave portions on the entire surface of the plate main body, and the plurality of convex portions and concave portions are spaced apart.
  • a plurality of heat exchange plates are mounted, a plurality of convex portions of the heat exchange plates adjacent to each other are in contact with each other. Therefore, compared with the heat exchange plate having the chevron pattern, the transition curved surface between the concave portion and the convex portion is more reasonable, and the distribution of the installation contact points is more reasonable, so that the entire plate heat exchanger has better strength.
  • the thickness of the heat exchange plate can be reduced accordingly, thereby achieving the purpose of cost saving.
  • the heat exchange plate has a poor fluid distribution, thereby affecting heat exchange efficiency. rate.
  • the present invention provides a heat exchange plate capable of having good heat exchange efficiency while providing a more reasonable distribution of mounting contact points, thereby enabling assembly of a plurality of heat exchange plates A plate heat exchanger of reliable strength is realized, and the heat exchange plate can be made thinner, so that the manufacturing cost of the heat exchange plate can be reduced.
  • a heat exchange plate comprising a plate main body having a plurality of concave portions and convex portions provided on a surface thereof, wherein the plurality of concave portions and convex portions are alternately arranged along a first direction and along The second direction perpendicular to the first direction is alternately disposed, and the tops of the plurality of protrusions have an elongated shape along the first direction.
  • the convex portion when a plurality of heat exchange plates are mounted by means such as brazing, semi-welding or full welding, or in a detachable manner, the mounting contact area is increased, and the convex portion and the concave portion are enlarged The transition surface between them is more conducive to the stress distribution, so that the good strength of the heat exchanger can be ensured, and the thickness of the heat exchange plate can be correspondingly reduced, thereby achieving a reduction in cost.
  • the adjacent convex portion and the concave portion are connected by a sloped transition, and the adjacent concave portions are connected by a curved groove, and the bottom of the curved groove is higher than the bottom of the concave portion.
  • the apex angle of the triangle formed by the three recesses or protrusions adjacent in the elongate direction of the convex portion ranges between 50° and 160°.
  • the apex angle ranges between 70° and 150°.
  • each of the protrusions has a first side and a second side, and the first side and/or the second side are curved or linear.
  • each of the protrusions has a third side and a fourth side, and an angle between the third side and the fourth side ranges between 0° and 180°.
  • the top shape of the convex portion is or shape.
  • the angle of the included angle ranges between 20° and 110°.
  • first side and the second side are both curved, and the curvature of the first side is greater than the curvature of the second side.
  • the first side is a straight line and the second side is an arc.
  • the bottoms of the plurality of recesses have a circular shape or a polygonal shape.
  • the first direction is at an acute angle to the longitudinal direction, at an obtuse angle to the longitudinal direction, parallel to the longitudinal direction, or perpendicular to the longitudinal direction.
  • the heat exchange plate includes at least two heat exchange plate units, wherein the orientation of the first direction is herringbone in any two adjacent exchange plate units.
  • the present invention also provides a heat exchanger comprising a plurality of heat exchange plates as described above joined in mutually overlapping states, and a space between them forms a passage for heat exchange fluid flow.
  • the plurality of heat exchange plates are joined together by brazing, semi-welding or all-welding.
  • the plurality of heat exchange plates are detachably joined together.
  • FIGs 1 (a) and (b) show two types of plate heat exchange plates of the prior art.
  • FIGS. 2(a) and (b) are perspective views showing a portion of a heat exchange plate according to an embodiment of the present invention, wherein a plurality of convex portions and concave portions are provided on a surface of the plate main body;
  • 3-9 respectively illustrate various arrangements of recesses and projections on the surface of the panel body of the heat exchange plate in accordance with various embodiments of the present invention
  • 10a-10d illustrate an exemplary arrangement of a heat exchange plate in accordance with an embodiment of the present invention, wherein the orientation of the first direction is respectively at an acute angle to the longitudinal direction, at an obtuse angle to the longitudinal direction, in a herringbone shape, or parallel to the longitudinal direction;
  • Figure 11 is a schematic view showing the installation of a heat exchange plate according to the present invention.
  • Figure 12 is a result of a computer simulation showing a heat exchange fluid flow pattern in a passage when a heat exchange fluid flows in a passage between a plurality of heat exchange plates according to an embodiment of the present invention, wherein the heat exchange fluid is superheated along the longitudinal flow
  • the plates are exchanged and eddy currents are formed at the recesses.
  • FIGS. 2(a) and (b) show perspective views of a portion of a heat exchange plate in accordance with an exemplary embodiment of the present invention.
  • 3-9 illustrate the arrangement of the recesses and projections on the surface of the panel body of the heat exchange plate, respectively, in accordance with various embodiments of the present invention.
  • the heat exchange plate 1 includes a plate main body 11, on the surface of which a plurality of concave portions 12 and convex portions 13 are provided, wherein the plurality of concave portions 12 and convex portions 13 are along the first direction S1 are alternately disposed and alternately disposed in a second direction S2 perpendicular to the first direction, and the tops of the plurality of protrusions 13 have an elongated shape along the first direction S1.
  • the convex portion when a plurality of heat exchange plates are mounted by means such as brazing, semi-welding or full welding, or in a detachable manner, the mounting contact area is increased, and the convex portion and the concave portion are enlarged The transition surface between them is more conducive to the stress distribution, so that the good strength of the heat exchanger can be ensured, and the thickness of the heat exchange plate can be correspondingly reduced, thereby achieving a reduction in cost.
  • the present invention is not limited to the application of heat exchange fluid flowing longitudinally through the panel body.
  • the heat exchange fluid can also flow through the plate body in a lateral direction or in an oblique direction.
  • the vortex position changes, but the heat exchange efficiency can still be improved.
  • the plurality of recesses 12 and the protrusions 13 are alternately disposed along the first direction S1 and the second direction S2, the plurality of recesses 12 and the protrusions 13 do not necessarily have to be in the first direction S1. Or alternately arranged along the straight line in the second direction S2.
  • the positions of the concave portion 12 and the convex portion 13 alternately disposed along the first direction S1 in the second direction S2 may be staggered, and the positions of the concave portion 12 and the convex portion 13 alternately disposed along the second direction S2 in the first direction S1 may be Interlaced, for example, as exemplarily shown in FIG.
  • the adjacent convex portion 13 and the concave portion 12 are connected by a slope 14 , and the adjacent concave portions 12 are connected by a curved groove 15 .
  • the bottom of the curved groove 15 is higher than the bottom of the concave portion 12 .
  • the apex angle ⁇ of the triangle formed by the three recesses 12a, 12b, and 12c adjacent in the first direction S1 ranges between 50° and 160°.
  • the apex angle ⁇ ranges between 70° and 150°.
  • each of the protrusions 13 has a first side a1 and a second side a2, and the first side a1 and/or the second side a2 may be curved or linear.
  • the first side a1 and the second side a2 are both curved, and the curvature of the first side a1 is greater than the curvature of the second side a2.
  • the first side a1 is a straight line
  • the second side a2 is an arc.
  • arc as used herein includes a generally arcuate shape joined by a plurality of arc segments having different curvatures but the same direction of curvature.
  • curvature refers to a substantially average curvature.
  • top shape of the protrusions are shown non-exhaustively in Figures 3-8, for example or shape. It can be understood that a stronger eddy current can be provided when the second side a2 is curved compared to the case where the second side a2 is linear.
  • each convex portion 13 may have a third side a3 and a fourth side a3, and the angle ⁇ between the third side a3 and the fourth side a4 ranges from 0° to 180°. between.
  • a3 and a4 are connected to the first side a1 and the second side a2 by a circular arc transition to form an elongated structure of the top of the convex portion 13, wherein the third side a3 and the fourth side a4 form a
  • the angle angle ⁇ is a range of 0° to 180°. In a preferred embodiment, the angle of the included angle ⁇ ranges between 20° and 110°.
  • the bottom of the recess 12 has a circular shape or a polygonal shape.
  • Figures 10a-10d illustrate an exemplary arrangement of a heat exchange plate in accordance with an embodiment of the present invention.
  • the first direction S1 and the second direction S2 are parallel to the lateral direction T and the longitudinal direction L, respectively, however, as shown, for example, in FIGS. 10a-10d, the concave portion 12 and the convex portion 13 may be inclined. It is disposed on the board main body 11, wherein the orientation of the first direction S1 is respectively at an acute angle with the longitudinal direction L, at an obtuse angle with the longitudinal direction L, in a herringbone shape or in parallel with the longitudinal direction L.
  • a plurality of heat exchange plates according to embodiments of the present invention are first joined together by means such as brazing, full welding or semi-welding or by detachable means, and a space between them is formed for replacement The passage of hot fluid flow, thereby constituting the plate heat exchanger according to the present invention.
  • one side of the heat exchange plate 1 at the time of mounting is a convex portion 13 which is in contact with the convex portion 13' of the adjacent heat exchange plate 1', and the other side is a concave portion 12 and another A recess 12" of an adjacent heat exchange plate 1" is contact-mounted, as shown in FIG.
  • two different fluid distribution patterns are substantially formed on both sides of the same heat exchange plate, and the amount of fluid filling is relatively small on the side where the convex portions are in contact with each other.
  • Such an asymmetrical fluid distribution pattern enables a better fluid adjustment and performance adjustment mode.
  • the pressure drop is relatively low on the side where the recess is in contact with the mounting, the power consumption of the system can be reduced.
  • the simulation shows a fluid flow pattern in a passage when a heat exchange fluid flows through a plate heat exchanger according to an embodiment of the present invention, in which a heat exchange fluid flows in a longitudinal direction through a heat exchange plate. It will be appreciated that the heat exchange fluid may also flow through the heat exchange plates in a lateral or oblique direction.
  • a vortex is formed at the lower portion of the elongated convex portion 13, that is, at the concave portion 12.
  • the heat exchange plate by providing an elongated convex structure and going along the lateral direction T
  • the range of the apex angle ⁇ of the triangle formed by the adjacent three recesses 12 or the protrusions 13 is set between 50° and 160°, and a strong heat exchange fluid eddy current can be generated, thereby improving heat exchange efficiency, and at the same time
  • the elongated projection structure ensures the joint strength at the time of installation, that is, the strength of the plate heat exchanger as a whole is ensured.

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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

一种热交换板（1）和具有该热交换板（1）的板式热交换器，热交换板（1）包括板主体（11），板主体（11）的表面上设置有多个凹部（12）和凸部（13），其中多个凹部（12）和凸部（13）沿第一方向（S1）交替设置并且沿与第一方向（S1）相垂直的第二方向（S2）交替设置，多个凸部（13）的顶部具有沿第一方向（S1）的细长形状。热交换板（1）以及包含该热交换板（1）的板式热交换器，能够在保证良好的热交换效率的情况下确保热交换器的良好的强度，并且能够降低热交换板（1）的制造成本。

Description

热交换板和具有该热交换板的板式热交换器
本申请要求于2014年1月29日递交的、申请号为201410043032.X、发明名称为“热交换板和具有该热交换板的板式热交换器”的中国专利申请的优先权，其全部内容通过引用并入本申请中。
技术领域
本发明涉及热交换器领域。具体地，本发明涉及一种热交换板以及具有该热交换板的板式热交换器。
背景技术
近年来，板式热交换器广泛地应用于诸如空调、冰箱、冷水机组、热泵等设备中。通常，板式热交换器包括多个热交换板，多个热交换板通过诸如钎焊、全焊、半焊等方式或者以可拆卸的方式接合在一起，它们之间的空间形成用于换热流体流通的通道。当换热流体流过所述通道时，与热交换板接触，从而实现热交换。
图1(a)示出一种常见的具有人字形图案的热交换板。如图所示，所述热交换板具有板主体，在板主体的整个表面上具有凹凸的人字形图案。这样的热交换板能够在整个板主体表面上提供良好的流体分布，从而能够实现较高的换热效率。然而，对于这样的热交换板来说，在例如通过钎焊、全焊或半焊等方式或者以可拆卸的方式进行安装时，彼此相邻的热交换板的人字形图案以相反的方向安装，即，相邻两个热交换板上的对应的一组人字形图案在安装时仅仅有两个安装接触点，这使得整个板式热交换器的强度不高。而且，这样的热交换板的厚度不能太薄，否则也会出现强度不满足要求的问题，从而使得整个板式热交换器的可靠性下降。
图1(b)示出另一种常见的具有“点波(dimple)”形图案的热交换板。如图所示，所述热交换板具有板主体，在板主体的整个表面上具有多个凸部和凹部，所述多个凸部和凹部间隔设置。这样的多个热交换板在安装时，彼此相邻的热交换板的多个凸部相接触。由此，与具有人字形图案的热交换板相比，凹部与凸部之间的过渡曲面更为合理，安装接触点的分布也更为合理，使得整个板式热交换器具有较好的强度。并且，相应地能够减小热交换板的厚度，从而达到节约成本的目的。然而，与上述的具有人字形图案的热交换板相比，该热交换板的流体分布较差，从而影响热交换效 率。
因此，对于组装热交换板而得到的板式热交换器存在一种需求，即，希望在保证良好的热交换效率的情况下能够确保热交换器的接合强度，并且能够降低热交换板的制造成本，由此降低板式热交换器的制造成本。
发明内容
由此，本发明提供一种热交换板，所述热交换板能够具有良好的热交换效率，同时能够提供更合理的安装接触点分布，由此在对多个热交换板进行组装时，能够实现强度可靠的板式热交换器，并且所述热交换板能够被制造得更薄，从而能够降低热交换板的制造成本。
根据本发明，提供一种所述热交换板，包括板主体，所述板主体的表面上设置有多个凹部和凸部，其中所述多个凹部和凸部沿第一方向交替设置并且沿与所述第一方向相垂直的第二方向交替设置，所述多个凸部的顶部具有沿所述第一方向的细长形状。
通过这样的结构设置，当换热流体沿纵向流过板主体时，纵向旁通减小，从而横向分配加强，更利于横向流动。并且，由于凸部的细长形状，更利于涡流的产生。由此，提高了热交换效率。此外，基于凸部的细长形状，当通过诸如钎焊、半焊或全焊等方式或者以可拆卸的方式对多个热交换板进行安装时，安装接触面积增大，并且凸部与凹部之间的过渡曲面更利于应力分布，从而能够保证热交换器的良好的强度，热交换板的厚度可以相应地被减小，实现成本的减少。
在一实施例中，相邻凸部与凹部之间以斜面过渡连接，而相邻凹部之间以曲面槽过渡连接，所述曲面槽的底部高于所述凹部的底部。
在一实施例中，沿凸部的细长方向相邻的三个凹部或凸部所构成的三角形的顶角的范围在50°至160°之间。发明人发现，通过这样的设置，能够进一步改善流体分布、便于涡流的产生，从而提高热交换效率。
优选地，所述顶角的范围在70°至150°之间。
在一实施例中，每个凸部具有第一边和第二边，所述第一边和/或第二边为曲线形或直线形。
在一实施例中，每个凸部具有第三边和第四边，所述第三边与所述第四边的夹角的角度范围在0°至180°之间。
在一实施例中，所述凸部的顶部形状为
Figure PCTCN2015070667-appb-000001
或
Figure PCTCN2015070667-appb-000002
形。
优选地，所述夹角的角度范围在20°至110°之间。
在一优选实施例中，所述第一边和所述第二边均为弧形，且所述第一边的曲率大于所述第二边的曲率。
在另一优选实施例中，所述第一边为直线形，所述第二边为弧形。
在一实施例中，所述多个凹部的底部具有圆形形状或多边形形状。
在一实施例中，所述第一方向与纵向成一锐角角度、与纵向成一钝角角度、与纵向相平行或者与纵向相垂直。
在还一实施例中，所述热交换板包括至少两个热交换板单元，其中在任意两个相邻的交换板单元中所述第一方向的取向呈人字型。
本发明还提供一种热交换器，包括以相互重叠的状态相接合的如前述所述的多个热交换板，并且在它们之间的空间形成用于换热流体流动的通道。在一个实施例中，所述多个热交换板通过钎焊、半焊或全焊的方式接合在一起。在一实施例中，所述多个热交换板以可拆卸的方式接合在一起。
附图说明
以下将参考所附的附图详细地描述本发明，其中相同的附图标记表示相同的结构或部件，在图中：
图1(a)和(b)示出现有技术中的两种板式热交换板。
图2(a)和(b)示出根据本发明实施例的热交换板的一部分的立体图，其中在板主体的表面上具有多个凸部和凹部；
图3-9分别示出根据本发明各个实施例的热交换板的板主体的表面上的凹部与凸部的各个设置方式；
图10a-10d示出根据本发明实施例的热交换板的示例性设置，其中第一方向的取向分别与纵向成一锐角角度、与纵向成一钝角角度、呈人字形或者与纵向相平行；
图11示出根据本发明的热交换板的安装示意图；以及
图12是计算机模拟的结果，示出换热流体在根据本发明实施例的多个热交换板之间的通道流动时，在通道中的换热流体流动模式，其中换热流体沿纵向流过热交换板，并且在凹部处形成涡流。
具体实施方式
图2(a)和(b)示出根据本发明示例性实施例的热交换板的一部分的立体图。图3-9分别示出根据本发明各个实施例的热交换板的板主体的表面上的凹部与凸部的设置方式。如图所示，根据本发明的热交换板1包括板主体11，板主体11的表面上设置有多个凹部12和凸部13，其中所述多个凹部12和凸部13沿第一方向S1交替设置并且沿与所述第一方向相垂直的第二方向S2交替设置，所述多个凸部13的顶部具有沿所述第一方向S1的细长形状。
通过这样的结构设置，当换热流体沿纵向L流过板主体时，纵向旁通减小，从而横向分配加强，更利于横向流动。并且，由于凸部的细长形状，更利于涡流的产生。由此，提高了热交换效率。此外，基于凸部的细长形状，当通过诸如钎焊、半焊或全焊等方式或者以可拆卸的方式对多个热交换板进行安装时，安装接触面积增大，并且凸部与凹部之间的过渡曲面更利于应力分布，从而能够保证热交换器的良好的强度，热交换板的厚度可以相应地被减小，实现成本的减少。
应该理解的是，本发明不局限于换热流体沿纵向流过板主体的应用。换热流体也可以沿横向或沿斜向流过板主体。当换热流体沿横向或沿斜向流过板主体时，涡流位置虽然发生改变，但仍然能够提高热交换效率。
此外，应该指出的是，虽然所述多个凹部12和凸部13沿第一方向S1和第二方向S2交替设置，然而多个凹部12和凸部13并不需要一定是在第一方向S1或第二方向S2上沿一直线交替设置。换言之，沿第一方向S1交替设置的凹部12和凸部13在第二方向S2上的位置可以交错，沿第二方向S2交替设置的凹部12和凸部13在第一方向S1上的位置可以交错，例如如图9示例性地示出。
在一实施例中，相邻凸部13与凹部12之间以斜面14过渡连接，而相邻凹部12之间以曲面槽15过渡连接，所述曲面槽15的底部高于凹部12的底部。发明人发现，这样的结构设置能够加强上述的流体分布效果。
在一实施例中，例如如图3示例性所示，沿第一方向S1相邻的三个凹部12a、12b和12c所构成的三角形的顶角α的范围在50°至160°之间。优选地，所述顶角α的范围在70°至150°之间。发明人发现，在这样的设置下，更利于涡流的产生和分布，从而能够进一步提高换热效率。
在一实施例中，每个凸部13具有第一边a1和第二边a2，所述第一边a1和/或第二边a2可以为曲线形或直线形。例如如图3所示，所述第一边a1和所述第二边a2均为弧形，且所述第一边a1的曲率大于所述第二边a2的曲率。例如如图4所示，所述第一边a1为直线形，所述第二边a2为弧形。当然，本领域普通技术人员 可以理解，文中所指的“弧形”包括由若干曲率不同、但弯曲方向相同的弧线段连接而成的大致弧形形状，在这种情况下，“曲率”是指大致的平均曲率。
在图3-8非穷举地示出了所述凸部的顶部形状可以采用的几种形状，例如
Figure PCTCN2015070667-appb-000003
或
Figure PCTCN2015070667-appb-000004
形。可以理解，与第二边a2为直线形的情况相比，第二边a2为弧形时能够提供更强的涡流。
在一实施例中，每个凸部13可以具有第三边a3和第四边a3，所述第三边a3与所述第四边a4的夹角β的角度范围在0°至180°之间。例如，如图3所示，a3和a4通过圆弧过渡与第一边a1和第二边a2相连，形成凸部13的顶部的细长结构，其中第三边a3与第四边a4形成一夹角角度β，该夹角角度β的范围为0°至180°之间。在一优选实施例中，所述夹角β的角度范围在20°至110°之间。
在一实施例中，凹部12的底部具有圆形形状或多边形形状。
可以理解的是，凸部13的纵长长度C可以根据实际需要进行调整。
图10a-10d示出根据本发明实施例的热交换板的示例性设置。在以上图3-9所示的示例中，第一方向S1与第二方向S2分别平行于横向T和纵向L，然而例如如图10a-10d所示，所述凹部12和凸部13可以倾斜设置在板主体11上，其中第一方向S1的取向分别与纵向L成一锐角角度、与纵向L成一钝角角度、呈人字形或者与纵向L相平行。
在使用时，首先通过诸如钎焊、全焊或半焊等方式或者通过可拆卸的方式将根据本发明实施例的多个热交换板结合在一起，并且在它们之间的空间形成用于换热流体流动的通道，从而构成根据本发明的板式热交换器。基于本发明的热交换板1的结构，在安装时热交换板1的一侧是凸部13与相邻热交换板1’的凸部13’接触安装，而另一侧是凹部12与另一相邻热交换板1”的凹部12”接触安装，如图11所示。这样，在同一热交换板的两侧实质上形成两种不同的流体分布模式，在凸部相接触被安装的一侧，流体的填充量相对少。这样的非对称的流体分布模式使得能够提供更好的流体调整和性能调整模式。而且，由于在凹部相接触被安装的一侧，压降相对低，因此能够降低系统的功耗。
如图12所示，模拟示出当换热流体流过根据本发明实施例的板式热交换器时，在通道中的流体流动模式，其中换热流体沿纵向流过热交换板。可以理解，换热流体也可以沿横向或斜向流过热交换板。当换热流体沿纵向流过根据本发明实施例的多个热交换板之间的通道时，在细长凸部13的下方处，即在凹部12处形成涡流。由此可见，在根据本发明实施例的热交换板中，通过设置细长的凸部结构并且将沿横向T 相邻的三个凹部12或凸部13所构成的三角形的顶角α的范围设置在50°至160°之间，能够生成较强的换热流体涡流，从而能够提高热交换效率，同时由细长的凸部结构确保安装时的接合强度，即整体上确保板式热交换器的强度。
虽然已经结合各个实施例描述了本发明，但是，从说明书中可以理解，可以对文中的部件和结构进行各种组合、变化和改进，并且这样的组合、变化和改进落入本发明的范围内。

Claims (16)

  1. 一种热交换板，所述热交换板包括板主体，所述板主体的表面上设置有多个凹部和凸部，其中所述多个凹部和凸部沿第一方向交替设置并且沿与所述第一方向相垂直的第二方向交替设置，所述多个凸部的顶部具有沿所述第一方向的细长形状。
  2. 根据权利要求1所述的热交换板，其中，相邻凸部与凹部之间以斜面过渡连接，而相邻凹部之间以曲面槽过渡连接，所述曲面槽的底部高于所述凹部的底部。
  3. 根据权利要求1或2所述的热交换板，其中，沿凸部的细长方向相邻的三个凹部或凸部所构成的三角形的顶角的范围在50°至160°之间。
  4. 根据权利要求3所述的热交换板，其中，所述顶角的范围在70°至150°之间。
  5. 根据前述权利要求中任一项所述的热交换板，其中，每个凸部具有第一边和第二边，所述第一边和/或第二边为曲线形或直线形。
  6. 根据权利要求5所述的热交换板，其中，每个凸部具有第三边和第四边，所述第三边与所述第四边的夹角的角度范围在0°至180°之间。
  7. 根据权利要求6所述的热交换板，其中，所述凸部的顶部形状为
    Figure PCTCN2015070667-appb-100001
    Figure PCTCN2015070667-appb-100002
    形。
  8. 根据权利要求6所述的热交换板，其中，所述夹角的角度范围在20°至110°之间。
  9. 根据权利要求8所述的热交换板，其中，所述第一边和所述第二边均为弧形，且所述第一边的曲率大于所述第二边的曲率。
  10. 根据权利要求8所述的热交换板，其中，所述第一边为直线形，所述第二边为弧形。
  11. 根据权利要求7-10中任一项所述的热交换板，其中，所述多个凹部的底部具有圆形形状或多边形形状。
  12. 根据权利要求1所述的热交换板，其中，所述第一方向与纵向成一锐角角度、与纵向成一钝角角度、与纵向相平行或者与纵向相垂直。
  13. 根据权利要求1所述的热交换板，其中，所述热交换板包括至少两个热交换板单元，其中在任意两个相邻的交换板单元中所述第一方向的取向呈人字型。
  14. 一种板式热交换器，包括以相互重叠的状态相接合的如前述权利要求中任一 项所述的多个热交换板，并且在它们之间的空间形成用于换热流体流动的通道。
  15. 根据权利要求14所述的板式热交换器，其中，所述多个热交换板通过钎焊、半焊或全焊的方式接合在一起。
  16. 根据权利要求14所述的板式热交换器，其中，所述多个热交换板以可拆卸的方式接合在一起。
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CN111238266A (zh) 2020-06-05
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