WO2019161657A1 - Distributeur de fluide à bloc et son procédé de fabrication - Google Patents

Distributeur de fluide à bloc et son procédé de fabrication Download PDF

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Publication number
WO2019161657A1
WO2019161657A1 PCT/CN2018/104764 CN2018104764W WO2019161657A1 WO 2019161657 A1 WO2019161657 A1 WO 2019161657A1 CN 2018104764 W CN2018104764 W CN 2018104764W WO 2019161657 A1 WO2019161657 A1 WO 2019161657A1
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WO
WIPO (PCT)
Prior art keywords
heat exchange
fluid
annular groove
sheet
distribution block
Prior art date
Application number
PCT/CN2018/104764
Other languages
English (en)
Chinese (zh)
Inventor
奚龙
张举飞
王健
荣彬彬
吴娜
Original Assignee
江苏宝得换热设备股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 江苏宝得换热设备股份有限公司 filed Critical 江苏宝得换热设备股份有限公司
Publication of WO2019161657A1 publication Critical patent/WO2019161657A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
    • 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
    • F28F3/046—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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0265—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/028—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using inserts for modifying the pattern of flow inside the header box, e.g. by using flow restrictors or permeable bodies or blocks with 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0282—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by varying the geometry of conduit ends, e.g. by using inserts or attachments for modifying the pattern of flow at the conduit inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means
    • F28F2225/04—Reinforcing means for conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2240/00—Spacing means

Definitions

  • This invention relates to plate heat exchangers, and more particularly to fluid dispensers in plate heat exchangers and methods of making same.
  • the plate heat exchanger is an ideal equipment for heat exchange between liquid-liquid and liquid-vapor. It has a series of advantages such as high heat exchange efficiency, small heat loss, compact structure and light weight, small floor space and long service life. Widely used in metallurgy, mining, petroleum, chemical, electric power, medicine, food, chemical fiber, paper, textile, shipbuilding, heating and other departments. Moreover, it can be used for various situations such as heating, cooling, evaporation, condensation, sterilization, and waste heat recovery. Plate heat exchangers are mainly detachable and welded. In contrast, welded heat exchangers have the advantages of temperature bearing, strong pressure bearing capacity and good corrosion resistance, so the range of welding heat exchangers is used. More extensive.
  • the welded heat exchanger can be further divided into a semi-welded heat exchanger, a full welded heat exchanger, a plate passenger heat exchanger, and a brazed plate heat exchanger.
  • Brazed plate heat exchangers can be used as condensers and evaporators in the refrigeration industry due to their low heating temperature, smooth joints, small changes in microstructure and mechanical properties, and accurate workpiece dimensions. They can be used as alcohol in the chemical industry. Cooler for fermentation, etc.
  • the brazed heat exchanger has an operating temperature range of -160 ° C to +225 ° C and a working pressure range of 0.01 MPa to 3.2 MPa.
  • the fluid distributor can reasonably separate the hot and cold fluids, so that they flow in the flow channels on both sides of each plate, and exchange heat through the plates.
  • the fluid distributors commonly used in brazed plate heat exchangers mainly include gasket type distributors and pressure groove type distributors.
  • the gasket type distributor is connected as a separate part to the heat exchange plate by welding.
  • the advantage is that the distribution hole size is accurate and not easy to block.
  • the disadvantage is that the part size is relatively large, the manufacturing assembly process is complicated, and the cost is high.
  • the pressure groove type distributor and the heat exchanger plate base material are integrally molded, which has the advantages of simple process and low batch cost, and the disadvantage is that the distribution hole size is low in accuracy and the distribution hole is easy to be blocked.
  • the technical problem to be solved by the present invention is to propose a novel fluid dispenser, a block fluid dispenser, and a production process thereof for the disadvantages of inaccurate distribution pore size, easy clogging, complicated manufacturing process and high cost of the common fluid dispenser.
  • a bulk fluid dispenser which is a lower pressing piece, a fluid distributing block and an upper pressing piece from bottom to top, as shown in FIG.
  • the fluid distributor lower pressing sheet and the lower heat exchange sheet adopt an integrated stamping forming process
  • the fluid distributor upper pressing sheet and the upper heat exchange sheet also adopt an integrated stamping forming process, as shown in FIG. 2 .
  • the fluid distribution block in the fluid distributor is connected to the lower pressing piece, the lower heat exchange piece, the upper pressing piece and the upper heat exchange piece by brazing.
  • the lower heat exchange sheet is made of stainless steel.
  • the lower heat exchange sheet has a thickness ranging from 0.3 to 0.4 mm, and its surface is a herringbone corrugation.
  • the herringbone corrugation angle ranges from 120° to 140°, and the herringbone corrugation thickness ranges from 1.5 to 2.5 mm.
  • the upper heat exchange sheet is made of stainless steel.
  • the upper heat exchange sheet has a thickness ranging from 0.3 to 0.4 mm, and the surface thereof is a herringbone corrugation.
  • the chevron ripple on the surface of the upper and lower heat exchange fins is a conjugate corrugation, that is, the upper and lower heat exchange fins have the same angle of the chevron ripple and the same thickness, but the chevron shape is opposite.
  • the lower pressing piece has the same thickness as the lower heat exchange piece, and the lower pressing piece surface has an upwardly convex annular groove.
  • the angle between the two end faces of the upper convex annular groove and the plane of the lower pressing piece is 40° to 50°;
  • the angle of the lower end line of the upper convex annular groove is in the range of 40° to 60°;
  • the angle between the two sides of the upper convex annular groove ranges from 80° to 100°;
  • the upper convex annular groove has a height dimension ranging from 1.5 to 2.5 mm, which is the same height as the lower heat exchange fin herringbone corrugation;
  • the upper surface of the upper convex annular groove has a length ranging from 2.2 to 2.8 mm.
  • the upper pressing piece and the upper heat exchange piece have the same thickness, and the upper pressing piece surface has an annular groove which is recessed downward.
  • the angle between the two end faces of the concave annular groove and the plane of the upper pressing piece is 40° to 50°;
  • the angle of the lower end line of the concave annular groove is in the range of 40° to 60°;
  • the angle between the two sides of the concave annular groove is in the range of 80° to 100°;
  • the recessed annular groove has a height dimension ranging from 1.5 to 2.5 mm, which is the same height as the upper heat exchange fin herringbone corrugation;
  • the upper surface of the concave annular groove has a length ranging from 2.2 to 2.8 mm.
  • the concave annular groove is symmetric with the upper convex annular groove, so the corresponding sizes of the two are the same.
  • the fluid distribution block is made of carbon steel which is easy to process and has a shape similar to a fan shape.
  • the fluid distribution block has a thickness ranging from 3.5 to 4.3 mm;
  • the angle of the two side end lines of the fluid distribution block ranges from 40° to 60°;
  • the angle between the left and right sides of the fluid distribution block ranges from 80° to 100°;
  • the fluid distribution block has a width dimension ranging from 5 to 7 mm;
  • the fluid distribution block uniformly distributes three identical tapered through holes, and the diameter of the outlet opening of the tapered through hole is related to the type of the refrigerant and the heat dissipation area, and the diameter of the outlet of the tapered through hole can be set according to a specific case.
  • the diameter of the outlet opening of the tapered through hole ranges from 0.8 to 2 mm;
  • the fluid distribution block has a tapered through-hole taper ranging from 1:12 to 1:10;
  • the fluid distribution block has a conical through hole with an angle ranging from 12° to 18°;
  • the fluid distribution block has a chamfer size ranging from 0.3 to 0.8 mm;
  • the sum of the angles between the two end faces of the upper convex and concave annular grooves and the sharp angles of the lower and upper pressing plates is equal to the angle between the left and right sides of the fluid distribution block.
  • the invention also provides a method for manufacturing the above-mentioned bulk fluid dispenser, the steps of which are as follows:
  • the carbon steel block is processed into the shape of the above-mentioned distribution block by using a numerical control machine tool;
  • Copper plating a copper film is plated on the surface of the above distribution block by electroplating technology, and the thickness of the copper film ranges from 0.04 to 0.07 mm;
  • pre-assembly pre-assembling the above lower heat exchange sheet, the lower press of the distributor, the distribution block, the copper foil, the upper press on the distributor, and the upper heat exchange sheet in the manner of FIG. 5;
  • Preloading pre-pressing the above pre-assembled fluid distributor by a press, the pre-pressure is set to 0.5 to 4.5 MPa;
  • Quality inspection Quality inspection of the above-mentioned bulk fluid dispenser is carried out according to national standards or industry standards or enterprise standards. The quality inspection link is interspersed in every manufacturing process.
  • the upper and lower pressing sheets and the upper and lower heat exchange sheets adopt an integrated stamping technique, and the process is simple, and thus the manufacturing cost is low.
  • the tapered through-hole of the distribution block is processed by a numerical control machine, and the dimensional error is small, so that the flow control accuracy of the distributor is high.
  • the diameter of the outlet opening of the conical through hole of the distribution block is small, so that the flow rate of the refrigerant at the liquid outlet of the distribution block is increased, and turbulent flow is more easily formed in the cavity of the heat exchange sheet, and the heat exchange efficiency is increased.
  • the inlet block of the distribution block has a large diameter, the diameter of the outlet port is small, impurities in the refrigerant are not easily deposited in the tapered through hole, and the single distribution block has a plurality of tapered holes, thereby greatly reducing The probability that the dispenser is blocked.
  • the surface of the distribution block is plated with a copper film, and the copper material has the advantages of low melting point and good ductility, and is brazed after pre-assembly and pre-pressing steps, thereby greatly improving the distributor and the upper and lower pressures. Sealing properties between sheets.
  • FIG. 1 is a schematic view showing the structure of the present invention, wherein 1 is a lower pressing piece, 2 is a fluid distributing block, and 3 is an upper pressing piece.
  • FIG. 2 is a schematic view showing the connection relationship between the upper and lower heat exchange sheets and the upper and lower pressing sheets in the present invention, wherein 4 is a lower heat exchange sheet and 5 is an upper heat exchange sheet.
  • Fig. 3 is a schematic view showing the herringbone shape of the lower heat exchange sheet of the present invention.
  • Fig. 4 is a schematic view showing the chevron of the upper heat exchange sheet of the present invention.
  • Fig. 5 is a schematic view showing the connection of the distribution block to the upper and lower pressing sheets and the upper and lower heat exchange sheets in the present invention.
  • Figure 6 is a front elevational view of the lower tablet in the present invention.
  • Figure 7 is a plan view of a depressed portion of the present invention.
  • Figure 8 is a front elevational view of the upper tablet in the present invention.
  • Figure 9 is a top plan view of the upper press in the present invention.
  • Figure 10 is a front elevational view of the dispensing block of the present invention.
  • Figure 11 is a half cross-sectional view of the distribution block of the present invention.
  • the specific technical solution adopted by the present invention is a block fluid dispenser.
  • the lower tablet 1, the fluid distribution block 2 and the upper tablet 3 are shown in Fig. 1.
  • the lower pressing piece 1 and the lower heat exchange piece 4 adopt an integrated stamping forming process
  • the upper pressing piece 3 and the upper heat exchange piece 5 also adopt an integral stamping forming process, as shown in FIG. 2 .
  • the upper and lower heat exchange fins are conjugated herringbone corrugations, and the herringbone angle is 130°, as shown in FIGS. 3 and 4.
  • the fluid distribution block 2 in the fluid distributor is respectively connected to the lower pressing piece 1, the lower heat exchange piece 4, the upper pressing piece 3, and the upper heat exchange piece 5 by brazing, as shown in FIG. 5, wherein the A hole is a liquid inlet.
  • the liquid enters the open space formed by the upper and lower heat exchange sheets through the fluid distributor;
  • the D hole is a liquid outlet hole through which the liquid flows out of the heat exchange piece cavity;
  • the B hole and the C hole are sealed holes, the liquid It is impossible to enter the heat exchange sheet through these two holes.
  • the fluid dispenser has a thickness of 0.36 mm and a surface having an upwardly convex annular groove as shown in Figs. 6 and 7.
  • the pressure on the fluid distributor is 0.36 mm.
  • the surface has an annular groove recessed downward, as shown in FIGS. 8 and 9.
  • the distribution block of the fluid distributor is as shown in FIG. 8 and FIG.
  • the block chamfer size is 0.5 mm.
  • the invention also proposes a manufacturing process of the above fluid dispenser, which comprises the following specific steps:
  • Copper plating a copper film is plated on the surface of the above distribution block by electroplating technology, and the thickness of the copper film is 0.05 mm;
  • pre-assembly pre-assembling the above lower heat exchange sheet, the lower press of the distributor, the distribution block, the copper foil, the upper press on the distributor, and the upper heat exchange sheet in the manner of FIG. 5;
  • Preloading pre-pressing the above pre-assembled fluid distributor with a press, the pre-pressure is set to 2 MPa;
  • Quality inspection Quality inspection of the above-mentioned bulk fluid dispenser is carried out according to national standards or industry standards or enterprise standards. The quality inspection link is interspersed in each manufacturing process;

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

L'invention concerne un distributeur de fluide à bloc qui comprend une feuille estampée inférieure (1), un bloc de distribution de fluide (2) et une feuille estampée supérieure (3). Le procédé de fabrication du distributeur de fluide à bloc comprend les techniques suivantes : la préparation des matériaux, l'estampage d'une feuille d'échange de chaleur inférieure (4), l'estampage d'une feuille d'échange de chaleur supérieure (5), l'estampage de la feuille estampée inférieure (1), l'estampage de la feuille estampée supérieure (3), l'usinage, le cuivrage, le pré-assemblage, le pré-serrage, le brasage et le contrôle de la qualité. La présente invention présente les avantages suivants : la précision en termes des dimensions d'un trou de distribution, la non tendance à bloquer le trou de distribution, de faibles coûts de fabrication, etc.
PCT/CN2018/104764 2018-02-23 2018-09-10 Distributeur de fluide à bloc et son procédé de fabrication WO2019161657A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810155266.1 2018-02-23
CN201810155266.1A CN108088300B (zh) 2018-02-23 2018-02-23 一种块状流体分配器及其制造方法

Publications (1)

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WO2019161657A1 true WO2019161657A1 (fr) 2019-08-29

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WO (1) WO2019161657A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022101140A1 (fr) * 2020-11-13 2022-05-19 CTS Clima Temperatur Systeme GmbH Échangeur thermique et circuit de refroidissement
EP4012323A1 (fr) * 2020-12-10 2022-06-15 Danfoss A/S Distributeur pour échangeur de chaleur à plaques et échangeur de chaleur à plaques

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108088300B (zh) * 2018-02-23 2021-06-11 江苏宝得换热设备股份有限公司 一种块状流体分配器及其制造方法

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CN207946010U (zh) * 2018-02-23 2018-10-09 江苏宝得换热设备股份有限公司 一种块状流体分配器

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CN103776284A (zh) * 2014-02-12 2014-05-07 丹佛斯微通道换热器（嘉兴）有限公司 板式换热器
CN204404864U (zh) * 2014-12-30 2015-06-17 浙江峰煌热交换器有限公司 一种板式换热器
CN205482528U (zh) * 2016-01-29 2016-08-17 浙江鸿远制冷设备有限公司 一种钎焊换热器的加强垫片
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CN207946010U (zh) * 2018-02-23 2018-10-09 江苏宝得换热设备股份有限公司 一种块状流体分配器

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022101140A1 (fr) * 2020-11-13 2022-05-19 CTS Clima Temperatur Systeme GmbH Échangeur thermique et circuit de refroidissement
EP4012323A1 (fr) * 2020-12-10 2022-06-15 Danfoss A/S Distributeur pour échangeur de chaleur à plaques et échangeur de chaleur à plaques
US11920876B2 (en) 2020-12-10 2024-03-05 Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd. Distributor for plate heat exchanger and plate heat exchanger

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CN108088300A (zh) 2018-05-29

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