WO2015027783A1 - Échangeur thermique à micro-canal et son procédé de fabrication - Google Patents

Échangeur thermique à micro-canal et son procédé de fabrication Download PDF

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Publication number
WO2015027783A1
WO2015027783A1 PCT/CN2014/083129 CN2014083129W WO2015027783A1 WO 2015027783 A1 WO2015027783 A1 WO 2015027783A1 CN 2014083129 W CN2014083129 W CN 2014083129W WO 2015027783 A1 WO2015027783 A1 WO 2015027783A1
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WO
WIPO (PCT)
Prior art keywords
header
partition
flow
cavity
hole
Prior art date
Application number
PCT/CN2014/083129
Other languages
English (en)
Chinese (zh)
Inventor
崔凯
Original Assignee
杭州三花研究院有限公司
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
Priority claimed from CN201310389432.1A external-priority patent/CN104422199A/zh
Priority claimed from CN201310391034.3A external-priority patent/CN104422200A/zh
Application filed by 杭州三花研究院有限公司 filed Critical 杭州三花研究院有限公司
Priority to DE112014003913.6T priority Critical patent/DE112014003913T5/de
Publication of WO2015027783A1 publication Critical patent/WO2015027783A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • 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
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/028—Evaporators having distributing means
    • 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
    • F28D1/053—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 straight
    • F28D1/0535—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 straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • 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
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
    • F28F9/0212—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions the partitions being separate elements attached to header boxes
    • 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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • 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
    • F28F9/0278—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of stacked distribution plates or perforated plates arranged over end plates
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines

Definitions

  • Microchannel heat exchanger and manufacturing method thereof The present application claims to be Chinese patent filed on August 30, 2013, the application number is 201310391034.3, and the invention name is "microchannel heat exchanger and microchannel heat exchanger manufacturing method"
  • the present invention relates to a heat exchange device, and more particularly to a microchannel heat exchanger, and to a method of manufacturing a microchannel heat exchanger. Background technique
  • the microchannel heat exchanger comprises a header at both ends, a flat tube connecting the headers, and fins disposed between the adjacent flat tubes, the flat tubes being provided with microchannels through which the refrigerant passes.
  • the working principle is: the refrigerant enters the corresponding collecting pipe through the inlet end of the collecting pipe, and then enters into the flat pipe through the collecting pipe, and exchanges heat with the external medium in the process of flowing in the flat pipe, thereby realizing Cooling or heating.
  • the refrigerant should be evenly distributed into the microchannels of each flat tube to ensure optimum heat transfer efficiency of the heat exchanger.
  • the inventor believes that the collector of the heat exchanger is generally elongated, and the refrigerant is affected by the resistance in the header, so that the flow rate of the refrigerant at the inlet end and the distal end of the header is relatively large, the refrigerant Uneven flow in the header will increase the uneven distribution of the refrigerant in the flat tube, which in turn affects the heat transfer efficiency of the microchannel heat exchanger. Summary of the invention
  • the invention provides a microchannel heat exchanger, which has a single structure, and the refrigerant can be more evenly distributed in the longitudinal direction of the collecting pipe, so that the refrigerant distribution in the flat pipe is more uniform to improve the heat exchange efficiency.
  • the present invention uses the following technical solution: a microchannel heat exchanger comprising a first header, a second header, a flat tube connecting the first header and the second header, and a fin between adjacent flat tubes;
  • the first header includes a header tube body, a flow hole for allowing refrigerant to enter and exit the first header tube, and the header tube body is provided with a plurality of a flat tube hole
  • the first header is provided with a partition member extending longitudinally along the tube body, the partition member includes a main partition and a sub-separator, and the main partition will collect the current
  • the tube body is divided into a first cavity and a second cavity, and the main partition is provided with at least one component flow hole; the first cavity is disposed near a side of the flat
  • the invention also discloses a method for manufacturing a microchannel heat exchanger, the microchannel heat exchanger comprising a first header and a second header, connecting the first header and the second set a flat tube of the flow tube, and a fin between the adjacent flat tubes;
  • the first header tube includes a header tube body, a flow hole for the refrigerant to enter and exit the header tube body, the first a partition member extending longitudinally of the manifold body, the partition member including a main partition and a sub-separator, wherein the main partition is provided with a diversion hole;
  • the collector tube body In combination, the header body includes a first tube body and a second tube body, the first tube body is provided with a flat tube hole, and the first tube body and the second tube body pass through the crucible
  • the phase separation member is fixedly disposed with the second tube body and forms at least two flow passages;
  • the processing of the microchannel heat exchanger comprises the following steps:
  • parts processing processing various parts of the microchannel heat exchanger, and then assembling to form a heat exchanger assembly
  • the heat exchanger assembly is integrally welded by welding in a furnace, the heat exchanger assembly includes at least a first pipe body, a partition member, a second pipe body, a flat pipe, a fin, and a second header;
  • the SI step includes the following sub-steps:
  • the first pipe body forming: the blanking of the sheet material is completed at the same time to form a flat tube hole; or the first tube body is formed at the same time to complete the punching to form a flat tube hole; or the profile processing is performed, and the length is processed and processed according to the length The two ends and the flat tube hole form a flat tube hole or the material is cut at the same time;
  • the second pipe body forming: the material is cut and processed; or the profile is processed, and the two ends are formed according to the length and processed;
  • processing of partition parts ⁇ processing of profiles, including cutting and processing the two ends according to the length and processing the split holes; or completing the split hole processing while cutting;
  • FIG. 1 is a schematic structural view of a microchannel heat exchanger of the present invention
  • FIG. 2 is a schematic structural view of a first header of the present invention
  • FIG. 3 is a schematic exploded view showing the structure of the first header in the first embodiment of the present invention.
  • Figure 4 is a transverse cross-sectional view of the first header in the first embodiment of the present invention.
  • Figure 5 is a schematic exploded view showing the structure of the first header in the second embodiment of the present invention
  • Figure 6 is a transverse cross-sectional view of the first header in the second embodiment of the present invention
  • Figure 7 is a schematic exploded view of the first header in the third embodiment of the present invention
  • Figure 8 is a transverse cross-sectional view of the first header in the third embodiment of the present invention
  • FIG. 9 is a schematic exploded view of the first header in the fourth embodiment of the present invention.
  • FIG. 10 is a transverse cross-sectional view of the first header in the fourth embodiment of the present invention.
  • Figure 11 is a schematic view showing the structure of the flow guiding member 10 shown in Figures 9 and 10;
  • Figure 12 is a transverse cross-sectional view of the first header in the fifth embodiment of the present invention.
  • Figure 13 is a cross-sectional view showing the first header A-A of Figure 2 in the first to fifth embodiments of the present invention.
  • Figure 14 is a schematic exploded perspective view of a first header according to a sixth embodiment of the present invention.
  • Figure 15 is a cross-sectional view along line A-A of the first header shown in Figure 2 in the sixth embodiment of the present invention.
  • the present invention discloses a channel heat exchanger 100 including a first header 1 , a second header 2 disposed parallel to the first header 1 and spaced apart by a predetermined distance, and disposed at the first A manifold 1 and a second header 2 are connected between the plurality of flat tubes 3 of the first header 2 and the second header 2, and are disposed between the adjacent flat tubes 3 to be exchanged.
  • Thermally efficient fins 4 are connected between the plurality of flat tubes 3 of the first header 2 and the second header 2, and are disposed between the adjacent flat tubes 3 to be exchanged.
  • the two ends of the flat tube 3 are respectively inserted into the first header tube 1 and the second header tube 2, and the flat tube tube 3 is provided with a plurality of microchannels (not shown) through which the microchannels of the flat tube 3 are connected.
  • a header 1 and a second header 2; the header 3 and the first header 1 and the second header 2 are fixed and sealed by welding.
  • the first header 1 includes a header tube body 11 and a first end cap 12 and a second end cap 13 at both ends of the manifold tube body 11, and the first end The cover 12, the second end cover 13 or the flow tube body 11 fixedly connected to the flow tube 15, the header body 11 and the The one end cover 12 and the second end cover 13 are sealingly disposed.
  • a plurality of flat tube holes 14 are formed in the tube wall of the collecting tube body 11, and the flat tube holes 14 are arranged corresponding to the flat tubes 3 in the longitudinal direction of the collecting tube body 11 (left-right direction as shown in FIG. 2).
  • the tube hole 14 has a size and shape to cooperate with the flat tube 3 to facilitate insertion and fixing of the flat tube 3 and welding sealing;
  • the collecting tube body 11 is internally provided with a partition member 16 extending longitudinally along the header tube body 11, and the partition member 16
  • the first main partition 162 and the first sub-separator 163 extending longitudinally along the header body 11 are included.
  • the first main partition plate 162 is provided with a plurality of flow dividing holes 161 therethrough, and the flow dividing holes 161 may be divided into a plurality of groups.
  • each of the flow holes 161 is arranged in an array at equal intervals along the longitudinal direction of the header pipe body 11, and the arrangement direction of the component flow holes 161 is parallel to each other.
  • the flow dividing holes 161 are all divided into three groups, and each of the flow holes 161 are arranged at equal intervals along the longitudinal direction of the header pipe body 11.
  • One column, and the arrangement direction of the three-component orifices 161 are respectively on three parallel lines of equal spacing.
  • the flow dividing holes 161 are divided into two groups, and each of the flow holes 161 is arranged in an array at equal intervals in the longitudinal direction of the header pipe body 11.
  • the arrangement direction of the two component orifices 161 is parallel.
  • the first main partition 162 divides the header body into a first cavity 111 that communicates with the flat pipe in a direction close to the flat pipe, and a split hole that is not directly connected to the flat pipe but passes through the first main partition 162.
  • 161 or a second cavity 112 partially communicating with the first cavity through the distribution chamber the second cavity 112 is separated by the first sub-spacer 163 into at least two flow chambers 112a that are relatively independent, and each flow chamber 112a is A group of flow holes 161 are in communication and communicate with the first cavity 111 through a flow dividing hole 161 communicating therewith.
  • the number of the first sub-separators 163, the number of the flow-through chambers 112a, and the number of groupings of the diverting holes 161 can be adjusted as needed. If the length of the headers is relatively long, the number of the first sub-separators 163 can be increased. Thus, the number of the flow-through chambers 112a and the number of groupings of the split-holes 161 can be correspondingly increased; so that a part of the first main partitions corresponding to each of the flow-through chambers 112a are respectively provided with a set for communicating with the first chamber.
  • the first header 1 may further include a second partition 17 along which the partition mounting hole 171 for providing the second partition is further disposed.
  • the partition mounting hole 171 is for mounting the second partition plate 17 and limiting the second partition plate 17, and the second partition plate 17 is inserted into the mounting position through the partition mounting hole 171 and fixed to the partition member 16, thereby A cavity is divided into a plurality of relatively independent distribution chambers 111a.
  • Each of the distribution chambers 111a corresponds to a component flow hole 161 and a flow passage 112a, respectively, and communicates with the corresponding flow passage 112a through the corresponding split flow hole 161.
  • the refrigerant entering the header pipe body 11 from the flow pipe 15 is appropriately distributed before reaching the second cavity by the partition member 16 provided in the first header 1, and the corresponding refrigeration is distributed.
  • the agent is given to a plurality of relatively independent flow chambers; or at least a portion of the refrigerant is first distributed to the plurality of relatively independent flow chambers, and then the refrigerant of each of the flow chambers is led to the passage through the split holes provided in the first main partition
  • the first cavity 111 corresponding to the portion is then distributed to the flat tube 3 that cooperates with the portion of the first cavity 111, so that the refrigerant flows independently in each of the circulation chambers, so that the first header 1 can be along
  • the refrigerant is supplied in sections in the longitudinal direction, and the influence of the resistance of the collector on the flow of the refrigerant in the first header 1 can be reduced, and even the other end farthest from the inlet of the flow tube 15 can be circulated.
  • the cavity is distributed to the corresponding required refrigerant, so that the refrigerant is more evenly distributed in the longitudinal direction of the first header 1, and the efficiency of the microchannel heat exchanger is improved; at the same time, the present invention eliminates the distribution pipe and directly passes Partition member 16 to achieve diversion and distribution, simple structure, the manufacturing cost can be reduced.
  • a second partition 17 may be disposed in the first cavity 111, and the second partition 17 partitions the first cavity 111 into at least two relatively independent ones in the longitudinal direction.
  • the distribution chamber 111a is thus divided into at least two groups by the arrangement of the second partition plate 17, each of the distribution chambers 111a corresponding to a plurality of flat tubes, and the second partition plate 17 is in contact with the partition member 16 to seal or pass.
  • the second partition plate 17 further refines the first cavity 111 of the header pipe body 11 and is further disposed as a plurality of refrigerant circulation distribution regions, thereby further increasing the length of the refrigerant along the length of the collector pipe body. Uniformity increases the heat transfer efficiency of the microchannel heat exchanger.
  • the partition mounting hole 171 is an elongated hole penetrating through the side of the collector tube body 11.
  • the size of the hole is matched with the second partition plate 17, and the length thereof may be slightly larger than the length of the second partition plate 17, ensuring the first
  • the second partition plate 17 can be inserted into the header pipe body 11 from the outside of the header pipe body 11 through the partition plate mounting hole 171.
  • the first end cover 12 or the second end cover 13 is provided with a flow hole (not shown) through which the refrigerant enters and exits; the first header 1 may be provided with a flow tube 15 corresponding to the flow hole, and the flow tube 15 is The longitudinal extension direction of the one end cover 12 or the second end cover 13 is opposite to the longitudinal extension direction of the header tube body 11 from the first end cover 12 or the second end cover 13; the refrigerant flows into and out of the first current collecting pipe 15 Tube 1.
  • the first header 1 is an inflow header
  • the flow hole is an inflow hole
  • the flow tube 15 is an inflow tube; of course, the flow hole may also be disposed on the manifold tube 11, such that the flow tube 15 is also disposed on the header body 11, so that the position of the flow hole can be selected according to the matching structure.
  • the microchannel heat exchanger 100 includes a first header 1, and the first header includes a header body 11 and a first end cap. 12. The second end cap 13 and the flow tube 15.
  • the header pipe body 11 is of a combined type, including a first pipe body 191 and a second pipe body 192, and the first pipe body 191 and the second pipe body 192 are laterally oriented (front and rear direction as shown in FIG. 2).
  • the cross section has a substantially arc shape, and the first tube body 191 and the second tube body 192 are combined by splicing to form the header tube body 11; when the splicing combination, the first tube body 191 wraps the second tube body 192 or The second pipe body 192 wraps the first pipe body 191, and the wrap structure can increase the sealing property and the compressive strength of the header pipe.
  • the structure is relatively simple, easy to process, and at the same time, it can play a good limit function, and the first header has high pressure resistance.
  • the transverse shape of the first tube body 191 and the second tube body 192 may be other shapes, such as a rectangular shape, as long as the circulation and sealing of the refrigerant can be completed after the splicing.
  • the body can separately assemble the collector tube body to improve the assembly efficiency; of course, the collector tube body 11 can also be a unitary type, and the cross-sectional shape thereof can be circular, rectangular or elliptical.
  • the first pipe body 191 is provided with a flat pipe hole 14, and the flat pipe hole 14 is arranged longitudinally along the first pipe body 191.
  • the second pipe body 192 is provided with a partition member 16 extending longitudinally along the second pipe body 192.
  • a space between the first main partition 162 of the partition member 16 and the first tubular body 191 forms a first cavity 111, and a space between the second tubular body 192 and the first main partition 162 of the partition member 16 forms a second space.
  • the cavity 112, the second cavity 112 is further divided by the sub-separator 163 of the partition member 16 into at least two flow passages 112a that are relatively independent.
  • the second pipe body 192 and the partition member 16 may be integrally extruded or stretch-formed, and the partition member 16 includes two portions disposed substantially vertically: a main partition plate and a sub-separator, and the main partition plate is provided with a split hole, and the sub-separator
  • the plate partitions and seals the second cavity 112 to form three independent flow chambers 112a, wherein the main partition is disposed substantially in a horizontal direction, and the sub-separators are disposed substantially vertically, wherein the horizontal direction is substantially the same as the flat tube hole arrangement direction.
  • the vertical direction refers to a direction perpendicular to the horizontal direction; generally, the connection portions of the microchannel heat exchanger components are all completed by welding, but the welding is prone to flaws, and the sealing property is poor, resulting in low product qualification rate; Therefore, in the embodiment, the second pipe body 192 and the partition member 16 are integrally extruded or stretched, so that the process is simple, the sealing property is ensured, and the product qualification rate can be improved.
  • the branching holes 161 in the partitioning member 16 are divided into a plurality of groups corresponding to the flow-through chamber 112a in the longitudinal direction of the header pipe body 11, and a component flow hole 161 is provided in the main partition plate 162 of the partition member 16 which is away from the one end of the flow-through hole. .
  • the first end cover 12 and the second end cover 13 are disposed at two ends of the collecting tube body 11.
  • the first end cover 12 is provided with a circulation hole, and the circulation hole is for the refrigerant to enter and exit the collecting tube body 11, the first end cover 12 and the shape of the second end cover 13 is matched or partially matched with the shape of the inner surface of the header body 11, and is sealed by welding after assembly, and the partition member 16 is close to the side of the flow hole with respect to the manifold body.
  • 11 is retracted by a certain distance, so that after the first end cover 12 is assembled, the inner surface of the first end cover is spaced from the partition member to form a distribution chamber 113, so that the collector tube is entered.
  • the refrigerant of the tubular body enters the distribution chamber 113 and then enters the flow chamber 112a of the first chamber 111 and the second chamber 112.
  • the partition member completely separates the first cavity from the second cavity, specifically, The first cavity is separated from the second cavity by the main partition such that the flow hole communicates with the first cavity 111 through the second cavity 112 and the split hole 161 on the main partition 162 of the partition member 16.
  • the two ends of the main partition of the partitioning member 16 abut against the first end cover, the second end cover or substantially abut against the first end cover and the second end cover, and the abutting means contacting and forming a sealing portion, basically The abutment is contact but not completely sealed; the length of the sub-separator 163 is smaller than the length of the main partition 162; the space between the partition member 16, the header body 11 and the first end cover 12 forms a distribution chamber 113; After entering the header tube 11 through the flow tube 15, first entering the distribution chamber 113, the refrigerant in the distribution chamber 113 enters the relatively independent flow chamber 112a, and enters through the one-component flow hole 161 corresponding to each flow chamber 112a.
  • the distribution hole 161 is arranged longitudinally along the collector tube body, and then distributed from the first cavity to the corresponding flat tube 3; using such a structure that the refrigerant first passes through the second cavity
  • the distribution is relatively evenly distributed to each of the circulations 112a, and then the corresponding distribution holes are arranged in sections corresponding to the length direction of the header body, and even the end farthest from the flow holes can be distributed to the corresponding refrigerant, so that the refrigeration In the agent A longitudinal direction of the dispensing chamber more uniform, thereby enabling more uniform refrigerant distribution in the longitudinal direction of the flow of the first header.
  • FIGS. 7 and 8 compared with the first embodiment: two second partitions 17 are provided in the first cavity 111, and the second partition 17 will
  • the first cavity 111 is divided into three relatively independent distribution chambers 111a;
  • the second partition 17 divides the flat tubes communicating with the first chamber into three groups, and each of the distribution chambers 111a corresponds to a set of flat tubes;
  • the partition plate 17 is a combination of a circular arc and a linear line, the linear portion of which cooperates with the partition member 16, and the arc portion thereof cooperates with the outer surface of the header tube to seal the adjacent distribution chamber 111a to form at least The two refrigerant passages; that is, the refrigerant flowing from the flow pipe 15 first reaches the distribution chamber 113, and then partially distributed to the distribution chamber 111a communicating with the distribution chamber 113, and the remaining portion passes through the partition member 16 and the second tube body 192.
  • the plurality of flow passages 112a formed are circulated, and flow to the distribution chamber 111a through the branch holes 161 provided in the main partition 162 of the partition member 16, and then distributed to the corresponding flat tubes through the distribution chamber 111a;
  • the distribution of the agent is pre-distributed near the inlet, and the refrigerant entering the circulation chamber 112a flows through the distribution hole 161 to the corresponding distribution chamber 111a, so that even a portion of the flat tube farthest from the inlet of the flow tube 15 can Assign to the required refrigerant.
  • the first cavity 111 inside the header pipe body 11 is further divided by the second partition plate 17, which contributes to more uniform distribution of the gas-liquid two-phase refrigerant in the header pipe body 11, thereby ensuring
  • the uniformity of the gas-liquid two-phase refrigerant when reaching the flat tube hole 14 improves the heat exchange efficiency of the microchannel heat exchanger; the structure can especially make the gas-liquid two-phase refrigerant in the vertically disposed first header 1 more uniform
  • the distribution ensures that the refrigerant entering the flat tube hole 14 is more evenly distributed, and the heat exchange efficiency of the microchannel heat exchanger is improved.
  • the first pipe body is provided with a partition mounting hole 171, and the partition mounting hole 171 is located between the adjacent flat pipe holes 14;
  • the partition mounting hole 171 is an elongated hole penetrating the first pipe body 191, and the length thereof Slightly larger than the length of the second partition, it is ensured that the second partition 17 can be inserted into the header tube 11 from the outside of the header body through the partition mounting hole 171.
  • the cross-sectional area of the flow guiding channel can be matched correspondingly, for example, the flow cross-sectional area of each flow-through chamber becomes longer as the distance through which the refrigerant flows through the flow-through chamber becomes longer.
  • the diversion holes which flow between the circulation chamber and the first chamber are enlarged as the distance through which the refrigerant flows through the circulation chamber becomes longer, which promotes more uniform distribution of the refrigerant.
  • the flow chambers shown in the figures are three, and the actual flow can be increased or decreased as needed, that is, the length of the header can be adjusted.
  • the first header is further provided with a flow guiding element 10, and the flow guiding element 10 is nested in the set.
  • the flow guiding element 10 abuts against one end of the partition member 16 close to the flow hole Or close by and seal by welding.
  • the flow guiding element 10 includes a bottom plate 101 and a frame body 102; the outer surface of the frame body 102 abuts against the inner surface of the header pipe body 11, and the bottom plate 101 includes a flow guiding area and a circulation area, and the flow guiding The bottom surface of the area abuts against the end of the partition member 16 close to the flow hole, and prevents the refrigerant from directly entering the first cavity 111 through the flow hole; the flow area is specifically a passage provided on the bottom plate 101 corresponding to the flow chamber 112 in the embodiment. Hole 103.
  • the flow guiding region is provided with a strip-shaped convex block 104.
  • the convex direction of the strip-shaped convex block 104 is from the bottom plate 101 of the flow guiding element 10 toward the flow hole, and the strip-shaped convex block 104 divides the flow guiding of the bottom plate 101 into
  • the fluid passage corresponding to the number of the flow passages 112 introduces the refrigerant into each of the flow passages 112a; ⁇
  • the uniform distribution of the refrigerant can be further ensured, and the distribution uniformity of the refrigerant in the headers can be improved. Improve the heat exchange efficiency of the microchannel heat exchanger.
  • the flow guiding element may also have a shape corresponding to the cross section of the first cavity, so that after entering the collecting pipe, the refrigerant does not directly enter the first cavity, but first reaches the distribution cavity 113, in the distribution cavity.
  • the pre-distribution is carried out, and then enters the corresponding circulation chamber, and enters the corresponding position of the first cavity through the diversion holes provided in the respective circulation chambers, and then is distributed into the flat tube.
  • the first end cover 12 is nested in the frame body 101 of the flow guiding element 10, and the outer surface of the first end cover 12 abuts against the inner surface of the frame body 101 of the flow guiding element 10 to prevent refrigerant from flowing from the collecting tube body. Leakage outward; the area enclosed by the first end cap 12 and the flow guiding element 10 is generally trapezoidal such that the shunting zone is closer to the flow aperture.
  • the convex blocks of the flow guiding area may also have other shapes, such as circular or elliptical protrusions distributed according to a certain regularity.
  • the difference from the third embodiment is that: at both ends of the partition member 16, a second partition plate 17, a second partition plate 17 and a partition member 16 and a set are provided.
  • the flow tube body 11 abuts to prevent the refrigerant from directly entering the first cavity 111 after entering the flow hole, and the refrigerant is distributed to the relatively independent plurality of flow passages 112a, and then respectively passed through the multi-component flow holes distributed in the longitudinal direction. Entering each of the distribution chambers 111a of the first cavity, and then It is distributed to the flat tubes that communicate with the respective distribution chambers 111a.
  • the distribution chamber 113 is also constructed using the second separator 17 as a spacer member.
  • a second spacer 17 disposed in the second spacer 17 near the end of the flow aperture is used as the spacer member, and the second spacer 17 as the spacer member is adjacent to the adjacent header tube and the partition member.
  • the partition plate is abutted, and the welded seal is assembled, so that the header tube body, the second partition plate 17, and the first end cover enclose the distribution chamber 113.
  • the partition member 16 and the second tube body 192 of the header are integrally formed, and specifically may be a profile formed by stretching or extrusion, and the profile directly includes a circulation chamber and a main partition and a sub-separator, which can reduce Finally, the welding points during welding are assembled, and the processing and assembly are relatively simple.
  • the present invention is not limited thereto, and the flow tube may be directly connected to several communication nozzles and directly connected to the circulation.
  • the cavity such as the outlet of the communication pipe leading to the first header, is divided into three interfaces, and the three interfaces are respectively connected to the three flow chambers, so that the object of the invention can also be achieved, so that the distribution is more uniform, only manufacturing Relatively complicated.
  • the invention also discloses a manufacturing method of a microchannel heat exchanger, wherein the microchannel heat exchanger comprises a first collecting pipe, a second collecting pipe, and a flat pipe connecting the first collecting pipe and the second collecting pipe, And a fin between the adjacent flat tubes;
  • the first collecting tube comprises a collecting tube body, a circulation hole for the refrigerant to enter and exit the collecting tube body, and the first collecting tube is provided with a longitudinal direction along the collecting tube body
  • the extending partition member, the collecting tube body is a combined type, the collecting tube body comprises a first tube body and a second tube body, the first tube body is provided with a flat tube hole, the first tube body and the second tube body
  • the welding component is fixed by the welding phase;
  • the partitioning member is fixedly disposed with the second pipe body and forms at least two flow passages;
  • the processing process comprises the following steps: si, component processing: processing various parts of the microchannel heat exchanger, Then assembling to form a heat exchanger assembly, wherein the partition member is processed
  • Forming the first pipe body the blanking of the plate is completed at the same time, forming a flat pipe hole, and if there is a partition mounting hole, the partition mounting hole is formed at the same time; or the profile is used, the length is cut and the two ends are processed according to the length And flat tube holes, forming flat tube holes or cutting materials while completing flat tube hole processing;
  • the second pipe body molding sheet or profile cutting and processing
  • the partitioning parts are cut, the profile processing is specifically performed, the two ends are processed according to the length, and the split holes are processed; or the split hole processing is completed at the same time of cutting;
  • Fix and fix other components such as the formed first pipe body, the second pipe body, and the partition member.
  • the heat exchanger further includes a second partition plate, or at the same time or later, the second partition plate is inserted into the first pipe body.
  • the partitioning member in the manifold pipe body can be assembled relatively simply, and the first header pipe is assembled and the microchannel heat exchanger In-furnace welding together, the final assembly of the heat exchanger can be completed by only one welding, and the process is relatively small.
  • the second pipe body may be integrally formed with the partition member, that is, the second pipe body and the partition member are integrally formed.
  • S11 parts processing includes the following sub-steps:
  • the first pipe body forming the blanking of the sheet material is completed at the same time, forming a flat pipe hole, and if there is a partition mounting hole, the partition mounting hole is formed at the same time; or the profile is used, the length is cut and the two ends are processed according to the length And flat tube ⁇ L; 512.
  • Processing of the second pipe body and the partition member the material is cut, the two ends are processed and the split hole is processed; or the split hole is processed at the same time;
  • the microchannel heat exchanger formed by the above manufacturing method uses the integrally formed partition member and the second pipe body to reduce the welding point, and the joint member of the partition member and the second pipe body can be effectively insulated, thereby ensuring the refrigerant.
  • the distribution effect is achieved, and after the profile is used, the consistency is also improved, thereby ensuring the yield of the finished product.
  • the second header may be the same as or different from the first header.
  • the partition member 16 is arranged in a Y shape, that is, the partition member 16 includes two main partitions 164 and a sub-separator 165, and two main partitions 164.
  • the sub-separator 165 has an edge that is common to all three, thereby forming a Y-shaped arrangement.
  • the partitioning member 16 divides the header body 11 into a first cavity 111 and a second cavity 112, wherein each of the two main partitions 164 has an edge abutting against the inner wall of the header body 11, thereby collecting the current
  • the tube body 11 is partitioned into a first cavity 111 and a second cavity 112.
  • the first cavity 111 is in direct communication with the flat tube hole 14.
  • the first cavity 111 and the second cavity 112 are disposed through the partition member 16.
  • the multi-component flow holes 161 are connected, and the sub-separator 165 is disposed in the second cavity 112, and one edge thereof abuts against the inner wall of the second cavity 112, so that the second cavity 112 is further separated by the sub-separator 165 into relatively independent ones.
  • Two flow passages 112a wherein a group of flow holes 161 corresponding to one of the flow passages 112a are located on the partition member 16 away from one end of the flow hole.
  • the first cavity 111 and the second cavity 112 communicate with the flow holes of the first end cap 12.
  • the circulation chamber is not limited to two, and may be three or more.
  • the partition member 16 and the header pipe body 11 are combined, and the partition member 16 is an integrally formed piece processed from a profile, and the split hole is processed after the blanking, and then the partition member is assembled to the header pipe body.
  • the collecting pipe, the flat pipe, the fin, and the like are assembled and fixed into a heat exchanger, and then formed by welding in the furnace.
  • the partition member 16 and the second partition The plate 17 may be a flat plate combination or a corrugated plate, and may be selected as needed.
  • the principle of refrigerant distribution in the sixth embodiment of the present invention is: the refrigerant enters the header pipe body 11 through the flow hole of the first end cover 12, and the refrigerant is divided into three parts by the partition member 16, and one portion enters the first chamber.
  • the body 111 enters the two flow chambers 112a, and the refrigerant entering the flow chamber 112a enters the first chamber 111 through the corresponding one-component orifice 161, and then flows out through the flat tube 3 communicating with the first chamber 111.
  • a second separator may be provided, and the refrigerant in the header can be further uniformly distributed to uniformly distribute the refrigerant in the flat tube.
  • a second partition or flow guiding member may be provided at the end of the flow hole to make the distribution of the refrigerant more uniform.
  • the first end cap and the flow tube of the above various embodiments may also be an integrally formed stamping member, which can reduce the solder joint.
  • the microchannel heat exchanger 100 disclosed by the present invention comprises a first header 1, a second header 2, a flat tube 3 and a fin 4, and the first header 1 is an inflow header, wherein the first The structure of the header 1 can be referred to as described above.
  • the refrigerant entering the header body is segmented in the longitudinal direction of the header, so that the refrigerant enters the flat tube. The distribution is more uniform, so that the heat exchange efficiency of the microchannel heat exchanger 100 can be improved.
  • One end of the flat tube 3 is inserted into the first header 1 through a flat tube hole 14 disposed in the first header 1.
  • the end of one end of the flat tube 3 is located in the first chamber of the first header 1 and
  • the partition member 16 retains a certain gap; ensures that the refrigerant can smoothly flow into the flat tube 3, further ensures the uniformity of the refrigerant in the flat tube 3, and improves the heat exchange efficiency of the channel heat exchanger.

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

Abstract

L'invention concerne un échangeur thermique à micro-canal (100) et son procédé de fabrication. L'échangeur thermique (100) comprend un tuyau collecteur (1) qui comprend un élément de séparation (16) comprenant une cloison principale (162) et une cloison auxiliaire (163). La cloison principale (162) divise le corps de tuyau du tuyau de raccordement (1) on une première chambre (111) et une seconde chambre (112). La cloison auxiliaire (163) divise la seconde chambre (112) en au moins deux chambres d'écoulement (112a) qui sont relativement indépendantes et s'étendent de manière longitudinale. La première chambre (111) communique avec au moins une chambre d'écoulement (112a) par agencement d'un trou partagé (161) dans la cloison principale (162). L'échangeur thermique peut rendre la distribution du fluide frigorigène dans le tuyau de raccordement (1) plus uniforme et améliorer l'efficacité d'échange thermique.
PCT/CN2014/083129 2013-08-30 2014-07-28 Échangeur thermique à micro-canal et son procédé de fabrication WO2015027783A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112014003913.6T DE112014003913T5 (de) 2013-08-30 2014-07-28 Mikrokanal-Wärmetauscher und Verfahren zur Herstellung desselben

Applications Claiming Priority (4)

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CN201310391034.3 2013-08-30
CN201310389432.1A CN104422199A (zh) 2013-08-30 2013-08-30 微通道换热器
CN201310389432.1 2013-08-30
CN201310391034.3A CN104422200A (zh) 2013-08-30 2013-08-30 微通道换热器以及微通道换热器的制造方法

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EP3106822A1 (fr) * 2015-06-10 2016-12-21 Mahle International GmbH Procédé de fabrication d'un ensemble échangeur de chaleur présentant un tube distributeur collecteur en tôle
JP2017155992A (ja) * 2016-02-29 2017-09-07 三菱重工業株式会社 熱交換器及び空気調和機
EP3203170A3 (fr) * 2016-02-04 2017-11-29 Mahle International GmbH Évaporateur à micro-canaux ayant une distribution compartimentée
CN108895880A (zh) * 2018-08-23 2018-11-27 天津三电汽车空调有限公司 一种用于汽车换热单元集流管内的分流结构
CN108905921A (zh) * 2018-08-29 2018-11-30 山东豪迈化工技术有限公司 一种微通道反应换热装置
WO2019215825A1 (fr) * 2018-05-09 2019-11-14 日立ジョンソンコントロールズ空調株式会社 Échangeur de chaleur, procédé de fabrication de section de communication, unité intérieure, unité extérieure et climatiseur
CN110887217A (zh) * 2019-11-05 2020-03-17 珠海格力电器股份有限公司 一种具有管内外分流的微通道换热器及空调
CN112880465A (zh) * 2019-11-29 2021-06-01 杭州三花研究院有限公司 一种集流件及换热器
CN117367175A (zh) * 2023-12-07 2024-01-09 豫新汽车热管理科技有限公司 一种冷热一体式高强度板翅式换热器

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EP3106822A1 (fr) * 2015-06-10 2016-12-21 Mahle International GmbH Procédé de fabrication d'un ensemble échangeur de chaleur présentant un tube distributeur collecteur en tôle
US10465996B2 (en) 2015-06-10 2019-11-05 Mahle International Gmbh Method of manufacturing a heat exchanger assembly having a sheet metal distributor/collector tube
US10551099B2 (en) 2016-02-04 2020-02-04 Mahle International Gmbh Micro-channel evaporator having compartmentalized distribution
EP3203170A3 (fr) * 2016-02-04 2017-11-29 Mahle International GmbH Évaporateur à micro-canaux ayant une distribution compartimentée
JP2017155992A (ja) * 2016-02-29 2017-09-07 三菱重工業株式会社 熱交換器及び空気調和機
WO2017149989A1 (fr) * 2016-02-29 2017-09-08 三菱重工業株式会社 Échangeur de chaleur et climatiseur
JPWO2019215825A1 (ja) * 2018-05-09 2021-04-22 日立ジョンソンコントロールズ空調株式会社 熱交換器、連通部の製造方法、室内機、室外機及び空気調和機
WO2019215825A1 (fr) * 2018-05-09 2019-11-14 日立ジョンソンコントロールズ空調株式会社 Échangeur de chaleur, procédé de fabrication de section de communication, unité intérieure, unité extérieure et climatiseur
CN108895880A (zh) * 2018-08-23 2018-11-27 天津三电汽车空调有限公司 一种用于汽车换热单元集流管内的分流结构
CN108895880B (zh) * 2018-08-23 2023-10-13 天津三电汽车空调有限公司 一种用于汽车换热单元集流管内的分流结构
CN108905921A (zh) * 2018-08-29 2018-11-30 山东豪迈化工技术有限公司 一种微通道反应换热装置
CN108905921B (zh) * 2018-08-29 2024-03-29 山东豪迈化工技术有限公司 一种微通道反应换热装置
CN110887217A (zh) * 2019-11-05 2020-03-17 珠海格力电器股份有限公司 一种具有管内外分流的微通道换热器及空调
CN112880465A (zh) * 2019-11-29 2021-06-01 杭州三花研究院有限公司 一种集流件及换热器
CN117367175A (zh) * 2023-12-07 2024-01-09 豫新汽车热管理科技有限公司 一种冷热一体式高强度板翅式换热器
CN117367175B (zh) * 2023-12-07 2024-03-22 豫新汽车热管理科技有限公司 一种冷热一体式高强度板翅式换热器

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