WO2024251293A1 - Échangeur thermique - Google Patents

Échangeur thermique Download PDF

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Publication number
WO2024251293A1
WO2024251293A1 PCT/CN2024/098363 CN2024098363W WO2024251293A1 WO 2024251293 A1 WO2024251293 A1 WO 2024251293A1 CN 2024098363 W CN2024098363 W CN 2024098363W WO 2024251293 A1 WO2024251293 A1 WO 2024251293A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
channel
heat exchanger
flat tube
hole
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2024/098363
Other languages
English (en)
Chinese (zh)
Inventor
李华
焦举
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaoxing Sanhua Automotive Thermal Management Technology Co Ltd
Original Assignee
Shaoxing Sanhua Automotive Thermal Management Technology Co Ltd
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 Shaoxing Sanhua Automotive Thermal Management Technology Co Ltd filed Critical Shaoxing Sanhua Automotive Thermal Management Technology Co Ltd
Priority to EP24818819.5A priority Critical patent/EP4726312A1/fr
Publication of WO2024251293A1 publication Critical patent/WO2024251293A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • F28F3/048—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 ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
    • 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
    • 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
    • F28F9/0263—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 or cross-section of 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
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—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
    • F28F3/027—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 with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips

Definitions

  • the present application relates to the field of heat exchange technology, and in particular to a heat exchanger.
  • the heat exchanger includes a shell and a core.
  • the core includes a first header, a second header, a fin plate and a flat tube.
  • a number of horizontally placed flat tubes are evenly arranged between the first header and the second header. Fins distributed in a vertical array are inserted between adjacent flat tubes.
  • the flat tubes and the header are provided with refrigerant flow channels.
  • the fin plate has a coolant flow channel.
  • the core is placed in the accommodating cavity of the shell to realize heat energy exchange between the refrigerant and the refrigerant.
  • the core must be assembled in the accommodating cavity of the shell, so the overall structure of the heat exchanger is complicated.
  • the purpose of the present application is to provide a heat exchanger with a simple structure.
  • an implementation method of the present application adopts the following technical solution:
  • a heat exchanger includes a flat tube and a plurality of plates, wherein the plurality of plates are stacked, and along the stacking direction of the plates, the flat tube is arranged between at least one group of adjacent plates, and the flat tube has a plurality of through holes, and a first inter-plate channel is provided between at least another group of adjacent plates.
  • the heat exchanger includes a first flow channel and a second flow channel, wherein the first flow channel and the second flow channel are not connected, and the fluid in the first flow channel can exchange heat with the fluid in the second flow channel, and the through holes of the flat tube are part of the first flow channel, and the first inter-plate channel is part of the second flow channel.
  • a heat exchanger in one embodiment provided by the present application, includes a flat tube and a plurality of plates, the plurality of plates are stacked, a flat tube is arranged between at least one group of adjacent plates, the flat tube has a plurality of through holes, at least another group of adjacent plates has a first inter-plate channel, the heat exchanger includes a first flow channel and a second flow channel, the first flow channel and the second flow channel are not connected, and the fluid in the first flow channel can flow with the second The fluid in the flow channel exchanges heat, and the flat tubes are combined with the plates. This arrangement is conducive to simplifying the structure of the heat exchanger.
  • FIG1 is a schematic diagram of a three-dimensional structure of a heat exchange unit A of a first embodiment of a heat exchanger provided by the present application from one viewing angle;
  • FIG2 is a schematic diagram of an exploded structure of a heat exchange unit A of a first embodiment of a heat exchanger provided by the present application;
  • FIG3 is a structural schematic diagram of a heat exchange unit A of a first embodiment of a heat exchanger provided by the present application from one perspective;
  • FIG4 is a schematic cross-sectional view of the heat exchange unit A along line A-A in FIG3 ;
  • FIG5 is a schematic cross-sectional view of the heat exchange unit A along B-B in FIG3 ;
  • FIG6 is a schematic diagram of the three-dimensional structure of the third plate in FIG1 from one viewing angle
  • FIG7 is a schematic diagram of the three-dimensional structure of the third plate in FIG1 from another perspective
  • FIG8 is a schematic diagram of the three-dimensional structure of the second plate in FIG1 from one viewing angle
  • FIG9 is a schematic diagram of the three-dimensional structure of the second plate in FIG1 from another perspective
  • FIG10 is a schematic three-dimensional structural diagram of a combined structure of a flat tube and a third plate from one viewing angle
  • FIG11 is a schematic three-dimensional structural diagram of a combined structure of a flat tube and a third plate in another embodiment from one viewing angle;
  • FIG12 is a schematic three-dimensional structural diagram of a combined structure of a flat tube and a third plate in another embodiment from one viewing angle;
  • FIG13 is a schematic diagram of an exploded structure of a heat exchange unit A of a second embodiment of a heat exchanger provided by the present application;
  • FIG14 is a schematic diagram of the three-dimensional structure of the first plate in FIG13 from one viewing angle
  • FIG15 is a schematic diagram of the three-dimensional structure of the first plate in FIG13 from another perspective
  • FIG16 is a schematic diagram of the three-dimensional structure of the second plate in FIG13 from one viewing angle
  • FIG. 17 is a schematic diagram of the three-dimensional structure of the second plate in FIG. 13 from another viewing angle.
  • the heat exchanger includes a plurality of plates 101, and the plurality of plates 101 are stacked. There is a space for fluid circulation between adjacent plates 10.
  • the heat exchanger includes a flat tube 4. Along the stacking direction of the plates 101, a flat tube 4 is arranged between at least one group of adjacent plates 101.
  • the flat tube 4 has a plurality of through holes 41.
  • a first inter-plate channel S is provided between at least another group of adjacent plates 101.
  • the heat exchanger includes a first flow channel and a second flow channel. The first flow channel and the second flow channel are not connected. The fluid in the first flow channel can exchange heat with the fluid in the second flow channel.
  • the through holes 41 of the flat tube 4 are part of the first flow channel, and the first inter-plate channel S is part of the second flow channel.
  • a flat tube 4 is provided between a plate 101 and an adjacent plate 101, and a first inter-plate channel S is provided between a plate 101 and another adjacent plate 101.
  • the first inter-plate channel S and the flat tube 4 are alternately arranged, the first inter-plate channel S is for the circulation of a first fluid, the through hole 41 is for the circulation of a second fluid, and the through hole 41 is not connected to the first inter-plate channel S.
  • Combining the flat tube 4 and the plate 101 is conducive to simplifying the structure of the heat exchanger, and the flat tube 4 has a strong pressure bearing capacity, which is also conducive to improving the structural strength of the heat exchanger.
  • the plate 101 includes a body 1015 and a flange 1011, the flange 1011 is arranged along the circumference of the body 1015, and the flange 1011 is upwardly protruding relative to the body 1015.
  • a plurality of plates 101, a flat tube 4 and other components are assembled to form a core body, and the core body is put into a brazing furnace for brazing as a whole, and other components such as a top plate, a bottom plate, a mounting plate, etc., and the flanges 1011 of adjacent plates 101 are welded and sealed.
  • the upper and lower surfaces of the flat tube 4 are respectively welded to the adjacent plates 101, and the heat exchanger is sealed by welding.
  • the heat exchanger of such a structure has high heat exchange efficiency, and does not need to set up an additional shell to accommodate the core body, and the structure of the heat exchanger is simple; in addition, the whole is brazed and fixed, and the forming process of the heat exchanger is also simple.
  • the first fluid in this application refers to the coolant, which is mainly a coolant, such as cooling water or cooling oil.
  • the second fluid in this application refers to the refrigerant, which is mainly a refrigerant, such as a fluorocarbon refrigerant and carbon dioxide.
  • a flat tube 4 may be provided between the plate 101 and an adjacent plate, a flat tube 4 may be provided between the plate 101 and another adjacent plate 101, and a first inter-plate channel S may be provided between the lower plates 101, and refrigerant may flow through the through holes 41 of the flat tube 4, that is, two layers of refrigerant inter-plate channels may be provided continuously, for example, a flat tube 4 may be provided between the first plate and the second plate, a flat tube 4 may be provided between the second plate and the third plate, and a first inter-plate channel S may be provided between the third plate and the fourth plate, so that heat exchange may be performed between the coolant and the refrigerant, but the heat exchange efficiency between the coolant and the refrigerant is poor, and the heat exchange performance of the heat exchanger is relatively poor.
  • the fourth plate only represents four adjacent plates, and does not represent the order of the plates of the heat exchanger.
  • two or more layers of the first inter-plate channels can be continuously set, and then the flat tubes 4 are set.
  • the flat tubes 4 can also be set between one group of adjacent plates 101, and the first inter-plate channels S can be set between other adjacent plates 101.
  • the upper and lower directions are defined as the upper and lower directions of Figure 1 in the accompanying drawings of the specification, and the upper and lower directions only represent relative positions;
  • the height direction, length direction, and width direction of the heat exchanger are defined as the height direction, length direction, and width direction of Figure 1 in the accompanying drawings of the specification.
  • the plate 101 in conjunction with Fig. 6 to Fig. 10, in this embodiment, along the length direction of the heat exchanger, the plate 101 includes a first end 1013 and a second end 1014, and the body 1015 of the plate 101 also includes a first corner hole area 6 and a second corner hole area 7, the first corner hole area 6 is close to the first end 1013, the second corner hole area 7 is close to the second end 1014, and the heat exchange area 1012 is located between the first corner hole area 6 and the second corner hole area 7.
  • the first corner hole area 6 is located between the heat exchange area 1012 and the flange 1011 close to the first end 1013
  • the second corner hole area 7 is located between the heat exchange area 1012 and the flange 1011 close to the second end 1014.
  • the first corner hole area 6 includes a first corner hole 61 and a second corner hole 62
  • the second corner hole area 7 includes a third corner hole 71 and a fourth corner hole 72.
  • the first corner hole 61 and the third corner hole 71 are located on the same side of the plate 101
  • the second corner hole 62 and the fourth corner hole 72 are located on the other side of the plate 101
  • the first corner hole 61 and the fourth corner hole 72 are diagonally arranged
  • the second corner hole 62 and the third corner hole 71 are diagonally arranged.
  • the first channel 104 and the third channel 106 are located on the same side of the heat exchanger, and the second channel 105 and the fourth channel 107 are located on the other side of the heat exchanger.
  • the first channel 104 and the fourth channel 107 are arranged diagonally, and the second channel 105 and the third channel 106 are arranged diagonally.
  • the first channel 104 and the fourth channel 107 are respectively used for the refrigerant to flow into and out of the heat exchanger, and the second channel 105 and the third channel 106 are respectively used for the coolant to flow into and out of the heat exchanger.
  • the plate 101 and the adjacent plate 101 are spot welded at the periphery of their first corner holes 61, and along the direction perpendicular to the stacking direction of the plate 101, near the periphery of the first corner hole 61, there is a first channel 63 between the plate 101 and the adjacent plate 101; the plate 101 and another adjacent plate 101 are welded at the periphery of their first corner holes 61 in a full circle, and along the direction perpendicular to the stacking direction of the plate 101, near the periphery of the first corner hole 61, there is no first channel 63 connected to the first inter-plate channel S between the plate 101 and another adjacent plate 101.
  • the first channel 104 can be connected to the through hole 41 through the first hole 63, and the first channel 104 is not connected to the first inter-plate channel S.
  • the fourth channel 74 can be provided between the plate 101 and one of the adjacent plates 101, and the fourth channel 107 is connected to the through hole 41 through the fourth hole 74; near the outer periphery of the fourth corner hole 72, the plate 101 and another adjacent plate 101 are welded in a full circle, and the fourth channel 107 is not connected to the first inter-plate channel S; near the outer periphery of the second corner hole 62, the plate 101 and one of the adjacent plates 101 have the second hole 64 between them. 4.
  • the plate 101 and another adjacent plate 101 are welded in a full circle, the second channel 105 is connected to the first inter-plate channel S through the second hole 64, and the second channel 105 is not connected to the through hole 41; near the outer periphery of the third corner hole 71, there is a third hole 73 between the plate 101 and one of the adjacent plates 101, the plate 101 and another adjacent plate 101 are welded in a full circle, the third channel 106 is connected to the first inter-plate channel S through the third hole 73, and the third channel 106 is not connected to the through hole 41.
  • the first channel 104 is the inlet channel of the refrigerant
  • the fourth channel 107 is the outlet channel of the refrigerant
  • the second channel 105 is the inlet channel of the coolant
  • the third channel 106 is the outlet channel of the coolant.
  • the first channel 104 and the fourth channel 107 are arranged diagonally, and the second channel 105 and the third channel 106 are arranged diagonally. This can increase the flow path of the refrigerant and the coolant and improve the heat exchange efficiency of the heat exchanger.
  • the refrigerant flows into the first channel 104 from the inlet of the first channel 104, then flows into the through hole 41 of the flat tube 4 through the first hole 63, and then flows into the fourth channel 107 through the fourth hole 74, and flows out of the heat exchanger from the fourth channel 107.
  • the first channel 104, the fourth channel 107, the first The hole 63, the through hole 41 of the flat tube 4 and the fourth hole 74 are all part of the first flow channel.
  • the coolant flows into the second channel 105 from the inlet of the second channel 105, then flows into the first inter-plate channel S through the second hole 64, then flows into the third channel 106 through the third hole 73, and flows out of the heat exchanger from the third channel 106.
  • the first channel 101 and the second channel 102 can be respectively configured as the inlet channel and the outlet channel of the refrigerant.
  • the inlet or outflow channel of the refrigerant or the coolant can be selected as needed, as long as two of the four channels of the heat exchanger are used for the circulation of the first fluid and the other two of the four channels are used for the circulation of the second fluid.
  • a plurality of plates 101 include a first plate 1, a second plate 2, and a third plate 3, and the first plate 1, the second plate 2, and the third plate 3 are stacked in sequence along the stacking direction of the plates 101, that is, the first plate 1, the second plate 2, and the third plate 3 are stacked from top to bottom, and the second plate 2 is located between the first plate 1 and the third plate 3.
  • the heat exchanger includes a heat exchange unit A, and the heat exchange unit A includes a first plate 1, a second plate 2, and a third plate 3, and the heat exchange unit A is a local structure of the heat exchanger.
  • the first plate 1 and the third plate 3 have the same structure, so that only two structures of plates 101 need to be manufactured, which is convenient for the molding of the plates 101, and the types of the plates 101 are relatively few, which is also convenient for the assembly of the heat exchanger.
  • the flat tube 4 is located between the second plate 2 and the third plate 3 .
  • the flat tube 4 includes a plurality of through holes 41 .
  • the through holes 41 are for the circulation of the refrigerant.
  • the through holes 41 are not connected to the first inter-plate channel S.
  • the flat tube 4 includes a plurality of through holes 41, which penetrate the flat tube 4 along the length direction of the flat tube 4, and the through holes 41 form a refrigerant channel.
  • the flat tube 4 has high structural strength and strong pressure bearing capacity.
  • the flat tube 4 structure can improve the structural strength of the heat exchanger, especially when the refrigerant is carbon dioxide refrigerant, the working pressure of carbon dioxide is relatively large, and the flat tube 4 structure can withstand the working pressure of carbon dioxide.
  • part of the flat tube 4 can be located in the heat exchange area 1012, and part of the flat tube 4 can be located in the corner hole area.
  • a plurality of through holes 41 are arranged in a row along the width direction of the heat exchanger, that is, a plurality of through holes 41 are roughly in the same straight line along the width direction of the heat exchanger, and such arrangement is conducive to controlling the flow path of the refrigerant and improving the heat exchange performance.
  • a plurality of through holes 41 may also be arranged in a wave shape or randomly along the width direction of the heat exchanger, which may also realize the circulation of the refrigerant and achieve heat exchange.
  • the upper plate surface of the flat tube 4 and the second plate 2 are contacted and welded, and the lower plate surface of the flat tube 4 and the third plate 3 are contacted and welded, which can prevent the refrigerant from flowing into the gap between the plate surface of the flat tube 4 and the plate 101, affecting the refrigerant distribution and the heat exchange efficiency; in addition, the refrigerant circulates in the through holes 41 of the flat tube 4, and the working pressure of the refrigerant mainly acts on the flat tube 4, which may also improve the structural strength of the heat exchanger.
  • the flat tube 4 includes a first side wall 43 and a second side wall 44, which are respectively on both sides of the flat tube 4 along the width direction of the flat tube 4, and extend along the length direction of the flat tube 4.
  • the first side wall 43 is arranged in contact with the flange 1011
  • the second side wall 44 is arranged in contact with the flange 1011, so that the refrigerant flows in the through hole 41 of the flat tube 4, and the working pressure of the refrigerant mainly acts on the flat tube 4, and the flat tube 4 has a strong pressure bearing capacity, which is conducive to improving the structural strength of the heat exchanger; in addition, the working pressure of the refrigerant acts less on the plate 101, which is conducive to avoiding deformation of the plate 101 or cracking of the weld between adjacent plates 101 when the working pressure of the refrigerant is too high.
  • first side wall 43 and the flange 1011 may also be gap-fitted, and the second side wall 44 and the flange 1011 may also be gap-fitted.
  • the gap between the first side wall 43 and the flange 1011 may provide a flow channel for the refrigerant, and the gap between the second side wall 44 and the flange 1011 may also provide a flow channel for the refrigerant. In this way, the refrigerant can be distributed and a flow path can be provided for the refrigerant.
  • the flat tube 4 may also be provided with multiple rows of through holes 41, the through holes 41 are arranged in rows along the width direction of the heat exchanger, and the through holes 41 are arranged in columns along the height direction of the heat exchanger.
  • the arrangement of multiple rows of through holes 41 can increase the flow path of the refrigerant and improve the heat exchange efficiency.
  • the through holes 41 may also be randomly arranged along the height direction and the width direction of the heat exchanger.
  • the through hole 41 is a regular circular through hole, which facilitates the forming of the through hole 41.
  • the through hole 41 may also be a wavy or other shaped through hole 41, that is, the inner peripheral wall of the through hole 41 is wavy or other shaped.
  • the heat exchanger includes a plurality of flat tubes 4, which are stacked together along the stacking direction of the plates 101, and adjacent flat tubes 4 are welded and fixed.
  • Each flat tube 4 includes a plurality of through holes 41.
  • Such a configuration can also provide more flow paths for the refrigerant, thereby enhancing the heat exchange performance of the heat exchanger.
  • a plurality of flat tubes 4 are arranged at intervals along the length direction of the plate 101 , and the through holes 41 of the flat tubes 4 are arranged along the length direction of the plate 101 , and there is a gap between adjacent flat tubes 4 for the flow of refrigerant, so that the refrigerant can flow from the through hole 41 of one flat tube 4 through the gap to the through hole 41 of the next flat tube 4 , which is conducive to increasing the flow path of the refrigerant, increasing the heat exchange area, and improving the heat exchange efficiency of the heat exchanger.
  • the plate 101 is arranged along the length direction, and a drainage structure, such as a protrusion, can also be arranged in the gap between adjacent flat tubes 4 to drain the refrigerant in the through hole 41 of one flat tube 4 to the through hole 41 of another flat tube 4 , so as to facilitate the distribution of the refrigerant.
  • a drainage structure such as a protrusion
  • the heat exchanger includes a plurality of flat tubes 4 , which are arranged at intervals along the width direction of the plate 101 , and the gaps between adjacent flat tubes 4 can allow the refrigerant to flow, so that heat exchange between the refrigerant and the coolant can be achieved.
  • a plurality of flat tubes 4 are arranged at intervals along the length direction of the plate 101, and there are gaps between the flat tubes 4 arranged along the length direction of the plate 101.
  • another plurality of flat tubes 4 are arranged at intervals along the width direction of the plate 101, and there are gaps between the flat tubes arranged along the width direction of the plate 101. This can further increase the flow path of the refrigerant and improve the heat exchange efficiency of the heat exchanger.
  • the third plate 3 includes a plurality of drainage portions 31, and the drainage portions 31 are located in the first corner hole area 6, and the drainage portions 31 are located at the periphery of the first corner hole 61.
  • the drainage portions 31 are arranged close to the heat exchange area 1012, and a plurality of drainage portions 31 are arranged at intervals along the periphery of the first corner hole 61.
  • the drainage portion 31 has a groove, and the drainage portion 31 has an upward opening.
  • the drainage portion 31 includes a drainage groove 311, and the first channel 104 is connected to the through hole 41 on the flat tube 4 through the drainage groove 311.
  • the setting of the drainage portion 31 can distribute the refrigerant to the through hole 41 of the flat tube 4 in multiple routes, so as to meet the distribution of the refrigerant in the first corner hole area 6 and improve the heat exchange effect.
  • the drainage portion 31 Setting multiple ones is helpful to improve the distribution of refrigerant.
  • the third plate 3 also includes a plurality of first boss portions 33, the first boss portions 33 are located in the first corner hole area 6, the first boss portions 33 are located at the outer periphery of the first corner hole 61, the first boss portions 33 protrude upward relative to the upper plate surface of the third plate 3, a plurality of first boss portions 33 and a plurality of drainage portions 31 are spaced around the outer periphery of the first corner hole 61, and the first boss portions 33 protrude upward relative to the upper plate surface of the third plate 3.
  • the second plate 2 includes a plurality of third protrusions 26 that cooperate with the drainage portion 31, and the second plate 2 also includes a plurality of second bosses 21 that cooperate with the first bosses 33.
  • the plurality of third protrusions 26 and the plurality of second bosses 21 are arranged at intervals along the outer periphery of the first angular hole 61, and the third protrusions 26 have grooves.
  • the second bosses 21 protrude downward relative to the lower plate surface of the second plate 2, the second bosses 21 and the first bosses 33 are in contact and welded, the third protrusions 26 and the drainage portion 31 enclose a first channel 63, the first channel 63 is connected to the through hole 41 of the flat tube 4, and the drainage portion 31 guides the refrigerant to the through hole 41 of the flat tube 4.
  • the second corner hole area 7 of the third plate 3 includes a plurality of lead-out portions 32, and the plurality of lead-out portions 3 are located at the periphery of the fourth corner hole 72.
  • the lead-out portions 32 are arranged close to the heat exchange area 1012, and the plurality of lead-out portions 32 are arranged at intervals around the periphery of the fourth corner hole 72.
  • the lead-out portion 32 has a groove, and the lead-out portion 32 has an upward opening.
  • the lead-out portion 32 includes a lead-out groove 321, and the fourth channel 107 is connected to the through hole 41 on the flat tube 4 through the lead-out groove 321.
  • the setting of the lead-out groove 321 can guide the refrigerant in the through hole 41 of the flat tube 4 to the fourth channel 107, and the refrigerant flows out of the heat exchanger from the fourth channel 107, which is conducive to reducing the flow resistance of the refrigerant and reducing the pressure drop of the refrigerant.
  • a plurality of lead-out grooves 321 are provided, which is conducive to increasing the outflow path of the refrigerant and reducing the outflow resistance of the refrigerant.
  • the second corner hole area 7 of the third plate 3 also includes a plurality of third boss portions 34, the third boss portions 34 protrude upward relative to the upper plate surface of the third plate 3, the third boss portions 34 are located at the periphery of the fourth corner hole 72, the third boss portions 34 are arranged close to the heat exchange area 1012, and a plurality of third boss portions 34 and a plurality of lead-out portions 32 are arranged at intervals along the periphery of the fourth corner hole 72.
  • the second plate 2 includes a plurality of fourth boss portions 22 that cooperate with the third boss portions 34, the second plate 2 includes a plurality of fourth protrusions 27 that cooperate with the lead-out portions 32, and a plurality of fourth protrusions 27 and a plurality of fourth protrusions 22 are arranged at intervals along the periphery of the fourth corner hole 72.
  • the fourth protrusion 27 has a groove.
  • the fourth boss portion 22 protrudes downward relative to the lower plate surface of the second plate 2, and the third boss portion 34 and the fourth boss portion 22 are connected.
  • the fourth protrusion 27 and the lead-out portion 32 form a channel, namely the fourth channel 74 , for the refrigerant to flow from the through hole 41 of the flat tube 4 through the fourth channel 74 into the fourth channel 107 , and the lead-out portion 32 guides the second fluid in the through hole 41 to the fourth channel 107 .
  • the second plate 2 and the third plate 3 are welded in a whole circle around the outer circumference near the second corner hole 62, and the second channel 105 and the through hole 41 of the flat tube 4 are not connected.
  • the second plate 2 and the third plate 3 are welded in a whole circle around the outer circumference near the third corner hole 71, and the third channel 106 and the through hole 41 of the flat tube 4 are not connected.
  • the first plate 1 and the second plate 2 have a second hole 64 on the periphery near the second corner hole 62, the second hole 64 is connected to the first inter-plate channel S, and the second channel 105 is connected to the first inter-plate channel S through the second hole 64; the first plate 1 and the second plate 2 have a third hole 73 on the periphery near the third corner hole 71, the third hole 73 is connected to the first inter-plate channel S, and the third channel 106 is connected to the first inter-plate channel S through the third hole 73.
  • the first plate 1 and the second plate 2 are welded in a full circle around the periphery near the first corner hole 61, and the first channel 104 is not connected to the first inter-plate channel S.
  • the first plate 1 and the second plate 2 are welded in a full circle around the periphery near the fourth corner hole 72, and the fourth channel 107 is not connected to the first inter-plate channel S.
  • the drainage groove 311 is a narrow groove, and the area of the drainage groove 311 is small, so that the area of the first boss portion 33 is relatively large, and the area of the first boss portion 33 is much larger than the area of the drainage portion 31, which is conducive to increasing the welding area of the first boss portion 33 and the second boss portion 21, increasing the density of the welding points of the first corner hole 61, and ensuring the structural reliability of the second plate 2 and the third plate 3 after welding, thereby improving the structural strength of the heat exchanger and its pressure bearing capacity for the refrigerant.
  • the setting of the first boss portion 33 can also ensure the wall thickness of the first channel 104 and the strength of the structure after welding.
  • first boss portion 33 and the second boss portion 21 surround a channel, namely the first channel 63, for the refrigerant to flow from the first channel 104 through the first channel 63 into the through hole 41 of the flat tube 4.
  • only one drainage portion 31 can be set.
  • the lead-out groove 321 is a narrow groove, so that the area of the third boss portion 34 is relatively large, which is also conducive to increasing the welding area between the third plate 3 and the second plate 2, increasing the density of welding points around the fourth corner hole 72, and further improving the structural strength of the heat exchanger.
  • the arrangement of the third boss portion 34 can also ensure the wall thickness of the fourth channel 107 and the strength of the structure after welding.
  • the arrangement of the first boss portion 33, the second boss portion 21, the third boss portion 34 and the fourth boss portion 22 can also The distance between the third plate 3 and the second plate 2 is ensured to facilitate the sealing between some corner holes. In other embodiments, only one lead-out portion 32 may be provided.
  • the density of solder joints around the first corner hole 61 and the density of solder joints around the fourth corner hole 72 are relatively greater than the density of solder joints around the second corner hole 62, and the density of solder joints around the first corner hole 61 and the density of solder joints around the fourth corner hole 72 are relatively greater than the density of solder joints around the third corner hole 71.
  • This arrangement can improve the heat exchanger's ability to withstand the working pressure of the refrigerant, especially the carbon dioxide refrigerant.
  • the density of solder joints around the second corner hole 62 and the third corner hole 71 is small, which can save solder and meet the heat exchanger's ability to withstand the working pressure of the coolant.
  • the density of solder joints around the four corner holes is basically the same.
  • a drainage portion 31 and a lead-out portion 32 are also required to be provided on the side of the first corner hole area 6 and/or the second corner hole area 7 close to the flange 1011, so as to increase the contact area between the refrigerant and the flat tube 4 and increase the strength of the heat exchanger.
  • the heat exchanger further includes fins 5, the fins 5 are located in the second accommodating cavity 25, at least part of the fins 5 are located in the heat exchange zone 1012, and the wall forming the first inter-plate channel S includes the fins 5.
  • the upper end surface of the fins 5 is welded and fixed to the lower plate surface of the first plate 1, and the lower end surface of the fins 5 is welded and fixed to the upper plate surface of the second plate 2.
  • the fins 5 include a plurality of fifth protrusions 51 and first grooves 52, the fifth protrusions 51 have a downward opening, the first grooves 52 have an upward opening, and there is at least one first groove 52 between adjacent fifth protrusions 51.
  • the fifth protrusions 51 and the first grooves 52 form a coolant flow channel, and the arrangement of the fins 5 can increase the flow path of the coolant, which is conducive to improving the heat exchange between the refrigerant and the coolant.
  • This application only illustrates a structure of the fins 5.
  • the fins 5 can also be provided with only the fifth protrusions 51 or only the first grooves 52, and the forms of the fins 5 can be various.
  • the heat exchanger may not be provided with fins, there is no turbulent structure between the first plate 1 and the second plate 2 , and the coolant flows between the plate surfaces of the first plate 1 and the second plate 2 .
  • FIG. 13 to FIG. 17 illustrate a second embodiment of a heat exchanger, in which the heat exchanger is not provided with fins 5, and the plate 101 is a point wave plate.
  • the second plate 2 has a plurality of first protrusions 24, and the plurality of first protrusions 24 are arranged at intervals.
  • the first protrusions 24 protrude upward relative to the upper plate surface of the second plate 2, and the first protrusions 24 protrude toward the first plate 1.
  • the first protrusions 24 protrude toward the third plate 1.
  • One side of the plate 3 has a groove, and a groove is formed between adjacent first protrusions 24. The coolant needs to flow around the first protrusions 24.
  • the setting of the first protrusions 24 is beneficial to increasing the turbulence effect of the second plate 2 on the coolant, and can also increase the flow path of the coolant, increase the contact area between the coolant and the refrigerant, and improve the heat exchange efficiency.
  • a second protrusion 12 is provided on the first plate 1, and the second protrusion 12 protrudes downward relative to the lower plate surface of the first plate 1, and the second protrusion 12 protrudes toward the second plate 2, and the second protrusion 12 has a groove on the side away from the second plate 2, and a groove is formed between adjacent second protrusions 12, and the bottom end of at least part of the second protrusion 12 is in contact with and welded to the top end of the first protrusion 24, and a coolant channel is formed between the first protrusion 24 and the second protrusion 12, which can increase the flow space of the coolant; in addition, the coolant flow needs to bypass the protrusion of the second protrusion 12, which can further increase the flow path of the coolant and increase the turbulence effect of the plate 101 on the coolant, and the welding of the second protrusion 12 and the first protrusion 24 can also enhance the connection strength of the plate 101.
  • the second plate 2 may have a first protrusion 24, the first plate 1 may not have a second protrusion 12, and the second protrusion may contact and weld with the lower plate surface of the plate 2; or, the second plate 2 may not have a first protrusion 24, the first plate 1 may have a second protrusion 12, and the second protrusion 12 may contact and weld with the upper plate surface of the second plate 2, which may also increase the flow path of the coolant.
  • the third plate 3 and the first plate 1 have a first convex portion 37
  • the corner hole area of the third plate 3 has a first convex portion 37
  • the first convex portion 37 is the first convex portion 37 protruding toward the second plate 2
  • the first convex portion 37 has a groove on the side away from the second plate 2
  • the first convex portion 37 is arranged on the outer periphery of the first corner hole 61 of the third plate 3 and the outer periphery of the fourth corner hole 72.
  • a groove is formed between adjacent first convex portions 37 near the outer periphery of the first corner hole 61 of the third plate 3, and the refrigerant is guided from the first channel 104 to the through hole 41 of the flat tube 4, and a groove is formed between adjacent first convex portions 37 near the outer periphery of the fourth corner hole 72 of the third plate 3, and the refrigerant is guided from the through hole 41 of the flat tube 4 to the fourth channel 107.
  • the corner hole area of the second plate 2 has a second convex portion 28 that cooperates with the first convex portion 37.
  • the second convex portion 28 is arranged on the outer periphery of the first corner hole 61 of the first plate 1 and the outer periphery of the fourth corner hole 72.
  • the second convex portion 28 protrudes toward the third plate 3, and the second convex portion 28 has a groove on the side close to the first plate 1. Close to the outer periphery of the first corner hole 61, the second convex portion 28 of the plate 2 and the first convex portion 37 of the plate 3 are in contact and welded to fix, so that the third plate 3 and the second plate 3 can be increased. 2.
  • the connection strength is improved, the strength of the heat exchanger is improved, and the pressure bearing capacity of the heat exchanger is increased.
  • the third plate 3 is not provided with the first protrusion 37, and the second plate 2 is not provided with the second protrusion 28.
  • the drainage portion 31 and the first boss portion 33 are provided on the periphery of the first corner hole 61 of the third plate 3
  • the lead-out portion 32 and the third boss portion 34 are provided on the periphery of the fourth corner hole 72 of the third plate 3
  • the third protrusion 26 and the second boss portion 21 are provided on the periphery of the first corner hole 61 of the second plate 2
  • the fourth protrusion 27 and the fourth boss portion 22 are provided on the periphery of the fourth corner hole 72 of the second plate 2.
  • the second plate 2 can also be a single herringbone wave plate or a multiple herringbone wave plate (not shown in the figure), and the single herringbone wave means that the first protrusion 24 includes two extension sections (not shown in the figure) set at an angle, each extension section is inclined relative to the length direction of the plate 101, and the two extension sections can be symmetrically set along the width direction of the plate 101, or asymmetrically set.
  • Multiple herringbone waves mean that the first protrusion 24 includes a plurality of extension sections set at an angle, each extension section is inclined relative to the length direction of the plate 101, and the number of extension sections is greater than two.
  • the plate 101 can also be provided with other forms of structures to increase the flow path of the coolant.
  • the present application only illustrates the structure of two point wave plates 101, and the forms of the first protrusion 24 and the second protrusion 12 are not limited to the above description, and the first protrusion 24 and the second protrusion 12 can be diverse.
  • flat tubes 4 are provided between adjacent plates, and cooling liquid flows through the through holes 41 between the plate 101 and its adjacent plate 101, and refrigerant flows through the through holes 41 between the plate 101 and another adjacent plate 101, and the cooling liquid and the refrigerant flow in the through holes 41 of the flat tubes 4 to exchange heat.
  • a flat tube 4 is provided between the first plate 1 and the second plate 2
  • a flat tube 4 is also provided between the second plate 2 and the third plate 3
  • the flat tube 4 between the first plate 1 and the second plate 2 is for the refrigerant to flow
  • the flat tube 4 between the second plate 2 and the third plate 3 is for the refrigerant to flow, so that heat exchange between the refrigerant and the cooling liquid can also be achieved.

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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)

Abstract

Échangeur thermique selon les modes de réalisation de la présente demande comprenant un tuyau plat et une pluralité de pièces de plaque, la pluralité de pièces de plaque étant empilées et le tuyau plat étant disposé entre au moins un groupe de pièces de plaque adjacentes ; le tuyau plat est pourvu d'une pluralité de trous traversants ; un premier canal inter-plaque est disposé entre au moins un autre groupe de pièces de plaque adjacentes ; l'échangeur thermique comprend un premier canal d'écoulement et un second canal d'écoulement, le premier canal d'écoulement n'étant pas en communication avec le second canal d'écoulement ; un fluide dans le premier canal d'écoulement peut échanger de la chaleur avec un fluide dans le second canal d'écoulement. Combiner le tuyau plat avec les pièces de plaque aide à simplifier la structure de l'échangeur thermique.
PCT/CN2024/098363 2023-06-09 2024-06-11 Échangeur thermique Ceased WO2024251293A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP24818819.5A EP4726312A1 (fr) 2023-06-09 2024-06-11 Échangeur thermique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202310684625.3 2023-06-09
CN202310684625.3A CN119103897A (zh) 2023-06-09 2023-06-09 一种换热器

Publications (1)

Publication Number Publication Date
WO2024251293A1 true WO2024251293A1 (fr) 2024-12-12

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Application Number Title Priority Date Filing Date
PCT/CN2024/098363 Ceased WO2024251293A1 (fr) 2023-06-09 2024-06-11 Échangeur thermique

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EP (1) EP4726312A1 (fr)
CN (1) CN119103897A (fr)
WO (1) WO2024251293A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57127794A (en) * 1981-01-30 1982-08-09 Tsuchiya Mfg Co Ltd Manufacture of multi-plate type heat exchanger
US6360811B1 (en) * 1999-09-21 2002-03-26 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Hydrogen absorption indirect heat exchanger
US20040069475A1 (en) * 2002-06-28 2004-04-15 Modine Manufacturing Co. Heat exchanger
US20060201663A1 (en) * 2005-03-08 2006-09-14 Roland Strahle Heat exchanger and flat tubes
US20080190594A1 (en) * 2005-09-01 2008-08-14 Syntics Gmbh Heat Exchanger Device for Rapid Heating or Cooling of Fluids
US20120043063A1 (en) * 2006-02-07 2012-02-23 Harald Schatz Exhaust gas heat exchanger and method of operating the same
CN103868380A (zh) * 2012-12-11 2014-06-18 杭州三花研究院有限公司 一种板式热交换器

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57127794A (en) * 1981-01-30 1982-08-09 Tsuchiya Mfg Co Ltd Manufacture of multi-plate type heat exchanger
US6360811B1 (en) * 1999-09-21 2002-03-26 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Hydrogen absorption indirect heat exchanger
US20040069475A1 (en) * 2002-06-28 2004-04-15 Modine Manufacturing Co. Heat exchanger
US20060201663A1 (en) * 2005-03-08 2006-09-14 Roland Strahle Heat exchanger and flat tubes
US20080190594A1 (en) * 2005-09-01 2008-08-14 Syntics Gmbh Heat Exchanger Device for Rapid Heating or Cooling of Fluids
US20120043063A1 (en) * 2006-02-07 2012-02-23 Harald Schatz Exhaust gas heat exchanger and method of operating the same
CN103868380A (zh) * 2012-12-11 2014-06-18 杭州三花研究院有限公司 一种板式热交换器

Also Published As

Publication number Publication date
CN119103897A (zh) 2024-12-10
EP4726312A1 (fr) 2026-04-15

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