EP3252416B1 - Condenseur par évaporation et échange de chaleur combiné à ensemble canalisation - Google Patents

Condenseur par évaporation et échange de chaleur combiné à ensemble canalisation Download PDF

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Publication number
EP3252416B1
EP3252416B1 EP15879571.6A EP15879571A EP3252416B1 EP 3252416 B1 EP3252416 B1 EP 3252416B1 EP 15879571 A EP15879571 A EP 15879571A EP 3252416 B1 EP3252416 B1 EP 3252416B1
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Prior art keywords
tube
heat exchange
plate
combined plate
evaporative condenser
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EP15879571.6A
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German (de)
English (en)
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EP3252416A1 (fr
EP3252416A4 (fr
Inventor
Zhiming Li
Dong Tan
Yong Zhang
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Guangzhou Wide Industrial Co Ltd
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Guangzhou Wide Industrial Co Ltd
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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
    • F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
    • F28D5/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the 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
    • 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
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/20—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being attachable to 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
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/086—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning having one or more openings therein forming tubular heat-exchange passages
    • 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
    • F28F3/10—Arrangements for sealing the margins
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • F28D1/0478—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag the conduits having a non-circular cross-section
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
    • F28D2021/0066—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications with combined condensation and evaporation
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/007—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
    • F28F21/083—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys from stainless steel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
    • 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
    • F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
    • F28F2275/025—Fastening; Joining by using bonding materials; by embedding elements in particular materials by using adhesives
    • 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
    • F28F3/06—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being attachable to the element

Definitions

  • the present invention relates to technical field of heat exchange device, especially to a combined plate-and-tube heat exchange evaporative condenser.
  • Applicant disclosed a heat exchange tubular plate used in a padding-and-serpentine tube coupled evaporative condenser in CN202836298U , wherein a padding plate are mounted between two tubular plates so as to lead the spray water to form a water-retaining layer by which the problem that the cooling water disorderly flies about can be solved.
  • the padding-and-serpentine tube structure of said evaporative condenser exalts heat exchange effectiveness to a certain degree, it cannot largely improve the heat exchange effectiveness as it merely improves the utilization of the cooling water.
  • WO 2014/012286 A1 has disclosed an evaporative condenser of a water cooling machine according to the preamble of claim 1.
  • the evaporate condenser comprises a fan, a water pump, a water sprayer, a reservoir and a combined plate-and-tube heat exchanger.
  • the combined place-and-tube heat exchangers are connected by a plurality of inlet headers and a plurality of outlet headers.
  • the combined plate-and-tube heat exchange piece comprises a heat transfer plate and a serpentine tube machined by a heat exchange tube.
  • the heat transfer plate is provided with a groove, and the serpentine tube is disposed in the groove by snap-fitting, welding or employing connecting pieces.
  • EP 1 443 292 A2 has disclosed a condenser for radiating heat, which is provided with a condensing tube and a cooling plate, the condensing tube is mounted on the cooling plate via a plurality of bent pieces.
  • JP S57 155277A has disclosed a heat conducting tape used to fix cooling tubes on a supporting board, which consists of adjacent thinner sections and thicker sections. In this way, the heat conducting tape provides strong support while leaving no gaps between the tape and the cooling tubes, and between the cooling tubes and the supporting board, giving rise to better cooling effect.
  • CN 103 983 072 A has disclosed an evaporator for a refrigerator, the evaporating tube and the heat transfer plate of the evaporator are assembled together by snap fitting.
  • FR 2 732 450 A1 has disclosed a cooling panel, which comprises cooling tubes and supporting plates assembled together.
  • the present invention aims to solve those technical problems by changing the heat exchange structure of the serpentine tube, and therefore improve the heat exchange effectiveness to a much greater extent.
  • a technical solution of the present invention is a combined plate-and-tube heat exchange evaporative condenser, comprising a fan, a water pump, a water sprayer, a reservoir; and a combined plate-and-tube heat exchanger;
  • the combined plate-and-tube heat exchanger is composed of a plurality of combined plate-and-tube heat exchange pieces connected by inlet headers and outlet headers;
  • the combined plate-and-tube heat exchange piece comprises a heat transfer plate and a serpentine tube machined by the heat exchange tube;
  • the heat transfer plate is provided with a groove, and the shape of the groove is matched with that of the serpentine tube;
  • the serpentine tube is disposed in the groove, and a gap between the serpentine tube and the groove is filled with a thermally conductive adhesive layer;
  • the gap has a width smaller than 10 mm;
  • the thermally conductive adhesive layer is a metal filler layer, the metal filler layer is formed by a liquid metal filling the gap through capillary action.
  • the heat transfer plate can lead the sprayed cooling water to flow over the heat exchange tube from the top down, and increase the utilization of the cooling water; moreover, due to the fact that the gap between the serpentine tube and the heat transfer plate is filled with the thermally conductive adhesive layer making the serpentine tube fully contact with heat transfer plate, the heat transfer plate therefore becomes fins of the serpentine tube, and leads to increasing the effective heat exchange area.
  • the thermally conductive adhesive layer is a metal filler layer.
  • Such structure can be realized by recooling the immersion liquid metal, whereby makes the thermally conductive adhesive layer fully fill up the gap. And the good thermal conductivity of the metal further improves fin effect of the heat transfer plate.
  • the gap between the serpentine tube and the groove has a width smaller than 10mm.
  • the capillary action may happen to the liquid metal.
  • a layer covered with uniform thin filler is formed in the contact surface.
  • the heat transfer plate and the serpentine tube are joined together to be an integral, and the thermal contact resistance between the heat transfer plate and the serpentine tube is decreased as the filler layer is very thin.
  • a plurality of limiting grooves and/or positioning solder joints are stamped on the heat transfer plate. Such structure ensures that the gap between the heat transfer plate and the serpentine tube is small enough when immersing the liquid metal.
  • the metal filler layer can be one or more of zinc, tin, aluminium, copper. These metals are low-melting and budget-friendly, with a pretty high quality-price ratio when being used in liquid metal immersion.
  • the thermally conductive adhesive layer is a thermally conductive adhesive.
  • a direct use of the thermally conductive adhesive can make the processing easier.
  • the combined plate-and-tube heat exchange piece is longitudinally arranged, which means the cooling wind generated by the fan flows in the long direction of the serpentine tube.
  • the flow direction of the cooling wind is consistent with the long direction of the coiled tube and no leeside is existed reducing the dry points on the surface of the heat transfer coiled tube as well as the risk of fouling on the heat transfer coiled tube.
  • the heat transfer tube is bent to form a plurality of straight sections; adjacent straight sections of the heat transfer tube are parallel with each other, and a tube pitch between the adjacent straight sections is uniform, or the tube pitch between the adjacent straight sections gets smaller gradually from the top down in the fall direction of the spray water.
  • Such structure increases the heat exchange temperature difference between the cooling water and the lower coiled tube, and leads to improvement in effectiveness of the heat exchange and reduction in the consumption of the heat exchange tube.
  • Another preferable model can be: the heat exchange tube is bent to form several direct sections; the length of the straight sections get longer gradually from the top down in the fall direction of the spray water.
  • one or more of water guiding pattern, water guiding opening, and flying-water prevention structure or reinforcing rib can be arranged on the heat transfer plate.
  • the present combined plate-and-tube heat exchange evaporative condenser has the following advantages.
  • the thermally conductive adhesive layer makes the heat transfer plate fully contact with the serpentine tube, and subsequently enables the serpentine tube to have a fin effect via the heat transfer plate and lead to an enlargement of the effective heat exchange area;
  • the heat exchange plate can direct the cooling water to form a continuous water-retaining layer, and lead to an enlargement of the evaporation area of the cooling water;
  • the enlargement of the effective heat exchange area and the cooling water evaporation area increases the heat exchange effectiveness, as well as facilitates the reduction of the overall size of the condenser.
  • a combined plate-and-tube heat exchange evaporative condenser of the present invention includes a fan 4, a water pump 5, a water sprayer 6, a reservoir 7 and a combined plate-and-tube heat exchanger 8; wherein the combined plate-and-tube heat exchanger 8 is disposed between the water sprayer 6 and the reservoir 7, and the water sprayer 6 is connected with the reservoir 7 via the water pump 5; the fan 4 is disposed at one end of the combined plate-and-tube heat exchanger 8.
  • the combined plate-and-tube heat exchanger 8 is composed of a plurality of combined plate-and-tube heat exchange pieces connected by inlet headers and outlet headers. As shown in Fig. 2 and Fig.
  • the combined plate-and-tube heat exchange piece includes a serpentine tube 1 machined by a heat exchange tube (the machining can be a process bending a long heat exchange tube to form the serpentine tube, or the machining also can be a process welding bent heat exchange tubes and straight heat exchange tubes together to form the serpentine tube), and a heat transfer plate 2.
  • the serpentine tube 1 is formed by bending the heat exchange tube in a continuous S direction, wherein straight sections of the heat exchange tube are substantially parallel with each other; in another embodiment, the straight sections also could be placed in non-parallel.
  • the serpentine tube 1 also could be any shape which suits for the evaporative condenser.
  • the heat exchange tube of the serpentine tube 1 can be a copper tube, stainless steel tube or galvanized steel tube, etc., and the cross-sectional shape of an inner flow pathway of the serpentine tube 1 can be round, oval, spiral, corrugation or olive-shaped or other shapes. It could be understood by one of ordinary skill in the art that the inner and outer surface of the serpentine tube 1 can be smooth, but preferably strengthened heat transfer surfaces with inner and outer thread respectively. Simultaneously, a hydrophilic or anticorrosion coating can be disposed on the outer surface of the serpentine tube 1.
  • the serpentine tube 1 has an inlet and an outlet for the flow pathway, the inlet and the outlet respectively connecting with an inlet header and an outlet header.
  • the heat exchange tube is bent to have a plurality of straight sections; adjacent straight sections in the heat exchange tube are parallel with each other, and a tube pitch between the adjacent straight sections is uniform, or the tube pitch between the adjacent straight sections gets smaller gradually from the top down in the fall direction of spray water; it also could be one that the length of the straight section gets longer gradually from the top down in the fall direction of the spray water.
  • the material of the heat transfer plate 2 can be carbon steel plate, stainless steel plate, aluminium plate, copper plate and etc.
  • the combined plate-and-tube heat exchange piece is longitudinally arranged, whereby cooling wind generated by the fan 4 flows substantially in the long direction of the serpentine tube 1.
  • the heat transfer plate 2 is provided with a groove 21.
  • the groove 21 is formed by stamping the heat transfer plate 2, the groove 21 also could be directly formed during the molding of the heat transfer plate 2; the shape of the groove 21 is matched with that of the serpentine tube 1; the serpentine tube 1 is disposed in the groove 21, and a gap between the serpentine tube 1 and the groove 21 is filled with a thermally conductive adhesive layer 3.
  • the thermally conductive adhesive layer 3 is a metal filler layer made of zinc.
  • a detailed preparation method of the zinc layer can be as follows: the heat transfer plate 2 and the serpentine tube 1 are immersed in high-temperature liquid zinc, the liquid zinc flows into the gap between the serpentine tube 1 and the groove 21 to fill up the gap; the viscosity of the fluid metal makes the serpentine tube 1 and the groove 21 join together tightly; when the fluid metal is cooled down and solidified into solid state, it becomes the thermally conductive adhesive layer 3 which is filled between the serpentine tube 1 and the groove 21 to fix both of them.
  • other metal such as tin and aluminum, or a metal combination thereof can be used as well. All of these metals are low-melting and budget-friendly that shows high quality-price ratio.
  • the gap between the serpentine tube 1 and the groove 21 has a width smaller than 10 mm.
  • a capillary action may occur between the liquid metal and a contact surface of the heat transfer plate 2 and the serpentine tube 1 after the liquid metal has permeated into the interior of the contact surface, as a result an uniform and thin thermally conductive adhesive layer 3 is formed in the gap of the contact surface. This not only makes the heat transfer plate 2 and the serpentine tube 1 join together to be an integral, but also reduces the thermal contact resistance between the heat transfer plate 2 and the serpentine tube 1 as the thermally conductive adhesive layer 3 is very thin.
  • the gap between the serpentine tube 1 and the groove 21 is the more obvious the capillary action of the liquid metal permeation is, and the more uniform the formed thermally conductive adhesive layer 3 is, and correspondingly, the more the expense and manufacturing complexity will be; the cost-optimal choice is when the width of the gap is about 10 mm; meanwhile, the optimal quality-price ratio is when the width of the gap is about 5 mm; the optimal choice concerning the uniform effect is when the width of the gap is no more than 3 mm.
  • several limiting grooves and/or positioning solder joints can be stamped on the heat transfer plate 2. Before the immersion, the serpentine tube 1 is mounted in the limiting groove or is partly soldered on the positioning soldered joint to make it prefixed. In another embodiment, the serpentine tube 1 and the heat transfer plate 2 can be prefixed by using fixtures which needs more complicate operations.
  • the heat of the serpentine tube 1 is transmitted to the heat transfer plate 2 via the thermally conductive adhesive layer 3; the heat transfer plate 2 becomes fins of the serpentine tube 1 that greatly increases the heat exchange area and directly enhances the heat exchange effect of the serpentine tube 1; meanwhile, the heat transfer plate 2 also can direct the cooling water to form a continuous water flow, whereby the problem of disorder flying-water is avoided and the utilization of the cooling water is increased.
  • the heat transfer plate 2 is an integral, it can avoid the crossflow of the cooling water at joint positions between the heat transfer plate 2 and the serpentine tube 1, and consequently guarantee the water spray rate.
  • the thermally conductive adhesive layer 3 can be replaced by a thermally conductive adhesive; the bonding can be achieved simply by evenly applying the thermally conductive adhesive in the groove 21 of the thermally conductive plate 2, and then mounting the serpentine tube 1 into the groove 21 (for some thermally conductive adhesives that are used in combination with a matching thermally conductive adhesive, it may need to apply the matching thermally conductive adhesive on the serpentine tube 1).
  • Such structure can be easily mounted and only simple procedure is needed.
  • the currently existed thermally conductive adhesives such as organosilicon thermally conductive adhesive, epoxy resin AB adhesive, polyurethane thermally conductive adhesive, etc., are inferior in thermal conduction as compared with metals like zinc, aluminum, and etc.
  • the unevenly applying of the adhesive results in occurrence of air space between the serpentine tube 1 and the groove 21, which adversely affects the heat exchange effectiveness.
  • other structures such as opening, corrugation, bend, water guiding groove, swallowtail groove, strengthen rib, etc.
  • a plurality of through holes (not shown) with shapes like rectangular, round or others, can be opened in the groove 21.
  • the serpentine tube 1 When the serpentine tube 1 is disposed in the groove 21, a part of the serpentine tube 1 may be exposed and not covered by the groove 21, this part of the serpentine tube 1 can directly contact with the cooling water.
  • the through holes can induce turbulence of the water flow to enhance heat exchange of the copper tube, while weaken the fin effect of the heat transfer plate to a certain degree.

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

Claims (7)

  1. Condenseur à évaporation et échange de chaleur à plaque et tube combinés, comprenant un ventilateur (4), une pompe à eau (5), un pulvérisateur d'eau (6) et un réservoir (7), dans lequel le condenseur à évaporation comprend en outre un échangeur de chaleur à plaque et tube combinés (8) ; l'échangeur de chaleur à plaque et tube combinés (8) est constitué d'une pluralité de pièces d'échange de chaleur à plaque et tube combinés reliées par une pluralité de collecteurs d'entrée et une pluralité de collecteurs de sortie ; la pièce d'échange de chaleur à plaque et tube combinés comprend une plaque de transfert de chaleur (2) et un tube en serpentin (1) usiné par un tube d'échange de chaleur ; la plaque de transfert de chaleur (2) est pourvue d'une gorge (21), et la forme de la gorge (21) correspond à celle du tube en serpentin (1) ; le tube en serpentin (1) est disposé dans la gorge (21), caractérisé en ce que
    un espace entre le tube en serpentin et la gorge est rempli d'une couche d'adhésif thermo-conducteur (3) ; l'espace a une largeur inférieure à 10 mm ; la couche d'adhésif thermo-conducteur (3) est une couche de charge métallique, la couche de charge métallique est formée par un métal liquide remplissant l'espace par action capillaire.
  2. Condenseur à évaporation et échange de chaleur à plaque et tube combinés selon la revendication 1, caractérisé en ce qu'une pluralité de gorges de limitation et/ou de joints de soudure de positionnement sont estampés sur la plaque de transfert de chaleur.
  3. Condenseur à évaporation et échange de chaleur à plaque et tube combinés selon la revendication 1, caractérisé en ce que la couche de charge métallique est un ou plusieurs éléments choisis dans un groupe constitué de zinc, étain, aluminium et cuivre.
  4. Condenseur à évaporation et échange de chaleur à plaque et tube combinés selon la revendication 1, caractérisé en ce que la pièce d'échange de chaleur à plaque et tube combinés est agencée longitudinalement, ce qui signifie que l'air de refroidissement généré par le ventilateur s'écoule le long d'une direction longitudinale du tube en serpentin (1).
  5. Condenseur à évaporation et échange de chaleur à plaque et tube combinés selon la revendication 1, caractérisé en ce que le tube de transfert de chaleur est coudé pour former une pluralité de sections droites ; les sections droites adjacentes du tube de transfert de chaleur sont parallèles l'une à l'autre, et un pas de tube entre les sections droites adjacentes est uniforme, ou le pas de tube entre les sections droites adjacentes se réduit progressivement de haut en bas dans la direction de chute de l'eau de pulvérisation.
  6. Condenseur à évaporation et échange de chaleur à plaque et tube combinés selon la revendication 1, caractérisé en ce que le tube d'échange de chaleur est coudé pour former une pluralité de sections droites ; la longueur de la section droite s'allonge progressivement de haut en bas dans la direction de chute de l'eau de pulvérisation.
  7. Condenseur à évaporation et échange de chaleur à plaque et tube combinés selon la revendication 1, caractérisé en ce que la plaque de transfert de chaleur a en outre une structure choisie dans un groupe constitué d'un motif de guidage d'eau, d'un trou de guidage d'eau, d'une structure anti-projection d'eau, d'une nervure de renforcement et d'une quelconque combinaison de ceux-ci.
EP15879571.6A 2015-01-28 2015-06-12 Condenseur par évaporation et échange de chaleur combiné à ensemble canalisation Active EP3252416B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510045303.XA CN105987622B (zh) 2015-01-28 2015-01-28 板管复合换热型蒸发式冷凝器
PCT/CN2015/081392 WO2016119365A1 (fr) 2015-01-28 2015-06-12 Condenseur par évaporation et échange de chaleur combiné à ensemble canalisation

Publications (3)

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EP3252416A1 EP3252416A1 (fr) 2017-12-06
EP3252416A4 EP3252416A4 (fr) 2018-01-03
EP3252416B1 true EP3252416B1 (fr) 2021-03-31

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EP15879571.6A Active EP3252416B1 (fr) 2015-01-28 2015-06-12 Condenseur par évaporation et échange de chaleur combiné à ensemble canalisation

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US (1) US20170276437A1 (fr)
EP (1) EP3252416B1 (fr)
CN (1) CN105987622B (fr)
MY (1) MY193547A (fr)
WO (1) WO2016119365A1 (fr)

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Also Published As

Publication number Publication date
CN105987622A (zh) 2016-10-05
CN105987622B (zh) 2018-08-31
MY193547A (en) 2022-10-18
WO2016119365A1 (fr) 2016-08-04
US20170276437A1 (en) 2017-09-28
EP3252416A1 (fr) 2017-12-06
EP3252416A4 (fr) 2018-01-03

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