EP3982074A1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

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Publication number
EP3982074A1
EP3982074A1 EP20875183.4A EP20875183A EP3982074A1 EP 3982074 A1 EP3982074 A1 EP 3982074A1 EP 20875183 A EP20875183 A EP 20875183A EP 3982074 A1 EP3982074 A1 EP 3982074A1
Authority
EP
European Patent Office
Prior art keywords
heat exchange
collecting pipe
assembly
fin plate
tubes
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.)
Pending
Application number
EP20875183.4A
Other languages
German (de)
English (en)
Other versions
EP3982074A4 (fr
Inventor
Haobo Jiang
Lizhi Wang
Keke Xu
Jianlong Jiang
Feng Wang
Qiang Gao
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.)
Hangzhou Sanhua Research Institute Co Ltd
Original Assignee
Hangzhou Sanhua Research Institute 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
Priority claimed from CN201910948229.0A external-priority patent/CN111829362A/zh
Priority claimed from CN201910948701.0A external-priority patent/CN111829364A/zh
Priority claimed from CN201910947913.7A external-priority patent/CN111829363B/zh
Application filed by Hangzhou Sanhua Research Institute Co Ltd filed Critical Hangzhou Sanhua Research Institute Co Ltd
Publication of EP3982074A1 publication Critical patent/EP3982074A1/fr
Publication of EP3982074A4 publication Critical patent/EP3982074A4/fr
Pending 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • 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
    • F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05333—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
    • 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
    • F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05341—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
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/006—Tubular elements; Assemblies of tubular elements with variable shape, e.g. with modified tube ends, with different geometrical features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/04—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/22—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means having portions engaging further tubular elements
    • 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
    • F28F9/0243—Header boxes having a circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded

Definitions

  • the present disclosure relates to a field of heat exchange, and specifically to a heat exchanger.
  • Heat exchange devices are required in automobile, household or commercial air conditioning systems.
  • a heat exchanger includes integrated heat exchange tubes and fin plates. As shown in FIG. 1 , the fin plates 10 and heat exchange tubes 20 of the same structure and integrated with each other are arranged in multiple rows.
  • the heat exchange tubes 20 of the multiple heat exchange assemblies correspondingly form several rows, and the heat exchange tubes 20 protrude to an air-side circulation passage relative to the fin plates 10. This channel structure causes a large pressure drop in the air-side circulation passage, which makes the heat exchanger poorer in heat exchange performance, high in energy consumption and easy to frost.
  • the present disclosure is beneficial to improve the performance of the heat exchanger.
  • the present disclosure provides a heat exchanger, comprising two collecting pipes and a plurality of heat exchange assemblies
  • two adjacent heat exchange tubes are arranged in a staggered manner along the array direction of the heat exchange assemblies, which is beneficial to avoid the heat exchange tubes corresponding to the two adjacent heat exchange assemblies being concentratedly arranged at a path of the air-side flow passage, to the uniformity of the flow section of the air-side flow passage, to reduce the influence of the sudden expansion and contraction of the flow channel structure on the fluid pressure drop, and to improve the heat exchange performance of the heat exchanger.
  • the present disclosure further provides a heat exchanger, comprising a plurality of collecting pipes and a plurality of heat exchange assemblies;
  • the flow directions of the refrigerant in the two groups of heat exchange tubes are opposite, which is beneficial to extend the flow path of the refrigerant, thereby improving the heat exchange performance of the heat exchanger.
  • the present disclosure further provides a heat exchanger, comprising two collecting pipes and a plurality of heat exchange assemblies;
  • the dimension of at least one connection area of the heat exchange assembly in the width direction of the heat exchange assembly is smaller than the dimension of the main heat exchange area in the width direction of the heat exchange assembly.
  • the present disclosure provides a heat exchanger 10 which includes a group of collecting pipes and a plurality of heat exchange assemblies 101.
  • the group of collecting pipes include two collecting pipes 100 respectively located at both sides in a length direction of the heat exchange assembly 101.
  • Each collecting pipe 100 includes a longitudinal pipe body 201 and an inner cavity 202 located in the pipe body 201.
  • the length direction of the heat exchange assembly 101 is illustrated by a solid line segment L with arrows at both sides in FIG. 2 .
  • a width direction of the heat exchange assembly 101 is illustrated by a solid line segment W with arrows at both sides in FIG. 2 .
  • the heat exchange assembly 101 is connected to the collecting pipes 100.
  • the plurality of heat exchange assemblies 101 are arranged at intervals along a length direction D of the collecting pipes 100.
  • the length direction D of the collecting pipes 100 can refer to a direction indicated by a dashed line in FIG. 2 .
  • the length direction of the heat exchange assembly 101 is perpendicular to the width direction of the heat exchange assembly 101.
  • the length direction D of the collecting pipes is perpendicular to the length direction of the heat exchange assembly 101 and the width direction of the heat exchange assembly 101.
  • a gap between two adjacent heat exchange assemblies 101 forms an air-side flow passage.
  • each heat exchange assembly 101 includes a fin plate 203 and at least one heat exchange tube 204.
  • the heat exchange assemblies 101 are arranged at intervals.
  • the gap between adjacent heat exchange assemblies 101 is adapted to circulate heat exchange airflow. Referring to the direction indicated by the arrows in FIG. 4 , that is, two opposite surfaces of the two adjacent fin plates 203 both allow the heat exchange airflow to pass therethrough.
  • the heat exchange assembly 101 includes a main heat exchange area 301.
  • the fin plate 203 and the heat exchange tubes 204 are combined as a whole, wherein the heat exchange tubes 204 are fixedly connected to the surface of the fin plate 203, or the fin plate 203 includes a plurality of sub-plates 2031 and the heat exchange tubes 204 are connected between two adjacent sub-plates 2031.
  • the heat exchange tubes 204 are connected between the two collecting pipes 100 in the length direction.
  • the heat exchange tube 204 includes an inner flow channel 2041 which communicates with the inner cavities 202 of the two collecting pipes 100.
  • the inner flow channel 2041 of the heat exchange tube 204 and the inner cavities 202 of the collecting pipes 100 form part of a refrigerant flow passage.
  • the heat exchange assembly 101 also includes two connection areas 302 located at both sides of the main heat exchange area 301 in the length direction thereof. Refer to FIGS. 10 and 12 , an end of the connection area 302 is mainly used to be connected and fixed to the collecting pipe 100.
  • the heat exchange assembly 101 may not be provided with the fin plate 203 in the connection area 302. That is, the heat exchange tube 204 may extend beyond the fin plate 203 in the length direction, and an exceeded end of the heat exchange tube 204 is connected to the collecting pipe 100. It should be understood that the end includes a small section of physical structures of the heat exchange assembly, which is located at an outer side of the heat exchange assembly along the length direction, rather than just a "point".
  • the collecting pipe 100 is used for conveying the refrigerant, and the refrigerant is conveyed to the heat exchange tube 204 through the collecting pipe 100.
  • the heat exchange tube 204 can exchange heat with the airflow through the tube wall 2042 and the fin plate 203.
  • the fin plate 203 with a relatively large area can exchange heat with the air around the fin plate 203, thereby increasing or reducing the temperature of the air around the fin plate 203.
  • the heat exchange tube 204 is connected to the fin plate 203.
  • the heat exchange tube 204 is formed on the surface of the fin plate 203 or the heat exchange tube 204 is connected between two adjacent sub-plates 2031. Most portion of the heat exchange tube 204 in the length direction is in contact with the fin plate 203, so that the heat exchange area between the heat exchange tube 204 and the fin plate 203 is maximized. This also maximizes the heat exchange and heat exchange efficiency between the heat exchange tube 204 and the fin plate 203.
  • At least part of the heat exchange tube 204 protrudes from at least one side of the fin plate 203 in an array direction of the heat exchange assembly 101.
  • the height of the heat exchange tube 204 in the array direction of the heat exchange assembly 101 is greater than the thickness of the fin plate 203.
  • the fin plate 203 may be a relatively thin strip-shaped structure, and the fin plate 203 may include two opposite surfaces.
  • the height or diameter of the heat exchange tube 204 in the array direction of the heat exchange assembly 101 is greater than the thickness of the fin plate 203. Therefore, whether the heat exchange tube 204 is connected between two adjacent sub-parts 2031, or the heat exchange tube 204 is formed on the surface of the fin plate 203, the heat exchange tube 204 protrudes from at least one surface of the fin plate 203.
  • the main heat exchange area corresponding to two adjacent heat exchange assemblies 101 at least one pair of adjacent heat exchange tubes 204 are arranged in a staggered manner.
  • the two adjacent heat exchange tubes 204 belong to the two adjacent heat exchange assemblies 101, respectively.
  • the other of the heat exchange tubes 204 is the heat exchange tube closest to the one of the heat exchange tubes 204 in the heat exchange assembly 101 to which the other heat exchange tube 204 belongs.
  • two heat exchange assemblies 101 are denoted as a heat exchange assembly A and a heat exchange assembly B, respectively.
  • One heat exchange tube in the heat exchange assembly A is marked as a heat exchange tube A, and there are several heat exchange tubes in heat exchange assembly B.
  • the heat exchange tube closest to the heat exchange tube A is marked as a heat exchange tube B, so that the heat exchange tube A and the heat exchange tube B are a group of heat exchange tubes which have an adjacent relationship.
  • the heat exchange tube 204 of the heat exchange assembly 101 and the heat exchange tube 204 of another adjacent heat exchange assembly 101 are arranged in a staggered manner.
  • the tube diameter of the heat exchange tube 204 is larger than the thickness of the fin plate 203.
  • the staggered arrangement is beneficial to avoid the concentrated arrangement of the heat exchange tubes 204 in the air-side flow passage. From the perspective of the overall flow path at the air side, the position with a larger flow cross section and the position with a smaller flow cross section are homogenized, which reduces the influence of sudden expansion and contraction of the flow path structure on the fluid pressure drop.
  • the present disclosure is beneficial to reduce heat exchange energy consumption, and the same flow of air can provide more heat exchange, thereby improving the heat exchange performance of the heat exchanger 10. At the same time, it helps the heat exchanger 10 to delay frosting.
  • the thickness of the fin plate 203 is 0.05mm to 0.5mm
  • the inner diameter of the heat exchange tube 204 is 0.4mm to 3.0mm
  • the outer diameter of the heat exchange tube 204 is 0.6mm to 5mm.
  • the distance between adjacent heat exchange tubes 204 is 3mm to 20mm.
  • the distance between the fin plates 203 corresponding to two adjacent heat exchange assemblies 101 is 1.4mm to 6mm.
  • the thickness of the fin plate 203 is 0.2mm
  • the inner diameter of the heat exchange tube 204 is 1.1mm
  • the outer diameter of the heat exchange tube 204 is 1.6mm
  • the distance between adjacent heat exchange tubes 204 is 12mm
  • the distance between the fin plates 203 corresponding to two adjacent heat exchange assemblies 101 is 1.8mm.
  • the length direction of the heat exchange assembly 101 is substantially perpendicular to the length direction of the collecting pipe 100.
  • the heat exchange tube 204 is welded to the surface of the fin plate 203.
  • the surface of the fin plate 203 forms a concave-convex structure.
  • the concave-convex structure can disturb the heat exchange airflow, thereby improving the quantity of heat exchange and heat exchange efficiency between the fin plate 203 and the heat exchange airflow.
  • the heat exchange tube 204 is welded to the surface of the fin plate 203, which can also increase the heat exchange area of the air-side flow passage.
  • At least one heat exchange tube 204 protrudes at the same side surface of the fin plate 203.
  • the heat exchange tube 204 may be arranged on a single surface of the fin plate 203, or the fin plate 203 may include several areas, such as a first area and a second area. In the first area, the heat exchange tube 204 is provided on one surface of the fin plate 203. In the second area, the heat exchange tube 204 is arranged on an opposite surface of the fin plate 203.
  • all the fin plates 203 can be divided into areas, and the heat exchange tubes 204 can be arranged on different surfaces of the fin plates 203 in different areas.
  • the heat exchange tube 204 is provided on a surface corresponding to the fin plate 203.
  • the heat exchange tube 204 is provided on the other surface of the corresponding fin plate 203.
  • the heat exchange tubes 204 of one heat exchange assembly 101 and the heat exchange tubes 204 of the other heat exchange assembly 101 are located at different sides of the corresponding fin plate 203.
  • the advantage of this arrangement is that the heat exchange tubes of the two heat exchange assemblies 101 can be simultaneously arranged in the airflow passage formed by the gap between the two heat exchange assemblies 101. Since the heat exchange tubes of the two heat exchange assemblies 101 are arranged in the staggered manner, it is helpful to form a continuous tortuous flow path in the airflow passage, increase the heat transfer coefficient of the airflow passage, and improve the heat exchange effect in the flow channel.
  • the airflow passage formed by the gap between the two heat exchange assemblies 101 has a relatively uniform circulation section.
  • the heat exchange tubes of the two heat exchange assemblies 101 may be simultaneously away from the airflow passage formed by the gap between the two heat exchange assemblies 101.
  • Wall surfaces at both sides of the airflow passage are not provided with heat exchange tubes, and the circulation cross section is relatively uniform. Therefore, it is beneficial to improve the uniformity of the air-side flow passage, thereby improving the heat exchange performance of the heat exchanger.
  • the plurality of fin plates 203 are arranged at intervals.
  • a plurality of fin plates 203 are arranged in parallel at equal intervals, so that the heat exchange airflow passes uniformly, and at the same time, the wind resistance of the heat exchange airflow passing through the plurality of fin plates 203 is reduced.
  • the adjacent fin plates 203 may also be arranged at unequal intervals, which is not limited in the present disclosure.
  • a cross section of the fin plate 203 is a continuous polyline shape, and a cross section of the heat exchange tube 204 is a rhombus shape.
  • the fin plate 203 has an angle adapted to the rhombus shape at wave crests and/or wave troughs of its polyline shape.
  • the heat exchange tube 204 combines two adjacent side walls 2043 with the fin plate 203 based on its rhombus shape, so that the fin plate 203 forms a semi-enclosed arrangement for the heat exchange tube 204.
  • the fin plate 203 is designed as a continuous polyline shape, and the area of the fin plate 203 in the width direction is larger, thereby increasing the heat exchange area between the fin plate 203 and the heat exchange airflow.
  • An airflow vortex can be formed between the wave crests and the wave troughs of the fin plate 203, so that the heat exchange airflow stays between the fin plates 203 for a longer time, thereby improving heat exchange efficiency.
  • the cross section of the fin plate 203 has a wave shape.
  • the cross section of the heat exchange tube 204 is circular or elliptical.
  • FIG. 6 illustrates circular heat exchange tubes 204.
  • the fin plate 203 includes a plurality of straight portions 2033 and a plurality of curved portions 2032.
  • the arc portion 2032 is located between two adjacent straight portions 2033.
  • the arc portions 2032 form wave crests and wave troughs.
  • Part of the outer surface of the heat exchange tube 204 is combined and fixed with the arc portions 2032 of the fin plate 203.
  • the curvature of a connection portion of the heat exchange tube 204 and the arc portion 2032 is the same in size and direction as the curvature of the arc portion 2032.
  • the heat exchange tube 204 includes a tube body 2042 located at a periphery of the inner flow channel 2041 thereof.
  • the plurality of sub-plates 2031 of the fin plate 203 and the tube body 2042 are integrally formed by a die casting process or by an extrusion process.
  • the tube body 2042 of the heat exchange tube 204 and the plurality of sub-plates 2032 of the fin plate 203 can be integrally formed by a pouring process or an extrusion process.
  • the inner channel 2041 of the heat exchange tube 204 is formed in a processing plate, a part of the processing plate forms the tube body 2042 of the heat exchange tube 204, and parts of the processing plate located at both sides of the heat exchange tube 204 form the sub-plates 2032.
  • it is realized by a first mold and a second mold which are matched with each other.
  • the first mold is used to form the inner channel 2041 of the heat exchange tube 204
  • the second mold has a cavity to form the rest of the heat exchange assembly 101.
  • the two molds are used in combination, so that the heat exchange assembly 101 is extruded from an opening of the cavity of the second mold.
  • the ratio of an area of the outer surface of the heat exchange assembly 101 to an area of the sum of the inner surfaces of all the heat exchange tubes 204 is 5 to 45.
  • the area of the heat exchange tube 204 is positively correlated with its inner diameter or equivalent inner diameter.
  • the inner diameter of the heat exchange tube affects the speed at which the same volume of refrigerant flows through the heat exchange tube 204.
  • the ratio of an area of the outer surface of the heat exchange assembly 101 to an area of the sum of the inner surfaces of all the heat exchange tubes 204 is 5 to 45.
  • the purpose of defining this range is that when the external surface area of the heat exchange assembly 101 is constant, the internal surface area of the heat exchange tube cannot be too large. That is, the tube diameter of the heat exchange tube should be as small as possible. As a result, it is trying to ensure that the refrigerant at the center of the flow section of the heat exchange tube 204 can also fully exchange heat with the tube body 2042 of the heat exchange tube 204, so as to increase the tube body of the heat exchange tube 204, thereby improving the quantity of heat exchange and heat exchange efficiency between the tube body 2042 of the heat exchange tube 204 and the refrigerant. At the same time, the wind resistance of the heat exchange tube 204 is reduced.
  • the tube diameter of the heat exchange tube 204 shall be at least larger than the thickness of the fin plate 203, and the heat exchange performance of the heat exchanger 10 is improved on the premise of ensuring a small refrigerant charge. Further, the ratio of the area of the outer surface of the heat exchange assembly 101 to the area of the sum of the inner surfaces of all the heat exchange tubes 204 is 20 to 30.
  • the plurality of heat exchange assemblies 101 have the same structure and shape. One heat exchange assembly 101 of the two adjacent heat exchange assemblies 101 is turned 180° relative to the other heat exchange assembly 101.
  • two adjacent heat exchange assemblies 101 constitute a basic unit.
  • the second heat exchange assembly 101 is turned 180° relative to the first heat exchange assembly 101 and then arranged opposite to the first heat exchange assembly 101. After that, a plurality of heat exchange assemblies 101 are arrayed with the basic unit.
  • This arrangement form realizes the staggered arrangement of the heat exchange tubes 204, helps to reduce the pressure drop at the air side and also helps delay frost formation.
  • the number of heat exchange tubes 204 is greater than or equal to two, and can be three, four, five, and so on.
  • the plurality of heat exchange tubes 204 are arranged at intervals in the width direction of the heat exchange assembly 101.
  • the fin plate 203 includes a body 400 and a plurality of bridges 401 protruding from a surface of the body 400.
  • a projection of the bridge 401 on the surface of the body 400 has an elongated shape which extends along the length direction of the heat exchange assembly 101.
  • a bridge hole 402 is formed between each bridge 401 and the body 400. The bridge holes 402 are adapted for the heat exchange airflow to pass therethrough.
  • Shapes of the bridge holes 402 of the bridges 401 may be arch, semicircle, square, isosceles trapezoid, and the like.
  • the heat exchange airflow passes through the fin plate 203, it can blow through the bridge holes 402.
  • a top of the bridge 401 may abut against the fin plate 203 of another heat exchange assembly 101 or may be spaced a certain distance apart from the fin plate 203 of another heat exchange assembly 101.
  • the heat exchange assembly 101 includes two connection areas 302 located at both sides of the main heat exchange area 301 in its length direction.
  • the dimension of an end of at least one of the two connection areas 302 in the width direction of the heat exchange assembly 101 is smaller than the dimension of the main heat exchange area 301 in the width direction of the heat exchange assembly 101.
  • the pipe body 201 of the collecting pipe 100 is provided with an insertion portion which is matched with the end of the connection area 302. At the insertion portion the pipe body 201 of the collecting pipe 100 is hermetically connected to the end of the connection area 302 of the heat exchange assembly 101.
  • the inner flow channel 2041 of the heat exchange tube 204 communicates with the inner cavities 202 of the two collecting pipes 100.
  • the inner flow channel 2041 of the heat exchange tube 204 and the inner cavities 202 of the collecting pipes 100 form part of the refrigerant flow passage.
  • the fin plate and the heat exchange tube 204 can be necked. For example, a part of the fin plate 203 is removed, and the heat exchange tubes 204 are bent and converged.
  • a length of the heat exchange tube 204 is greater than a length of the fin plate 203.
  • the heat exchange tube 204 extends beyond the fin plate 203 at both sides in the length direction of the heat exchange assembly 101.
  • the part of the heat exchange tube 204 located in the main heat exchange area 301 forms a main body section 501.
  • the heat exchange tube 204 includes a mounting section 503 and a matching section 502.
  • the end of the connection area 302 forms the mounting section 503 for mating with the collecting pipe 100.
  • the mounting section 503 is located at a side of the outer surface of the collecting pipe 100 close to the inner cavity 202 thereof.
  • the matching section 502 is connected between the mounting section 503 and the main body section 501.
  • the heat exchange tube 204 includes the main body section 501, two mounting sections 503 and two matching sections 502.
  • the two ends of the heat exchange tube 204 in the length direction respectively form two mounting sections 503.
  • the two matching sections 502 are respectively located at both sides of the length of the main body section 501.
  • the matching section 502 is connected between the mounting section 503 and the main body section 501.
  • the plurality of heat exchange tubes 204 of the heat exchange assembly 101 include at least one first heat exchange tube 204'.
  • the matching section 502 of the first heat exchange tube 204' is bent relative to the main body section 501 thereof.
  • the mounting section 503 and the main body section 501 of the heat exchange tube 204 may have substantially the same extending direction.
  • the mounting sections 503 of the plurality of heat exchange tubes 204 are converged in the width direction of the heat exchange assembly 101 compared to the main body section 501.
  • the present disclosure provides an alternative embodiment for making this kind of heat exchange assembly.
  • the length of the heat exchange tube 204 and the fin plate 203 of the preliminary processed heat exchange assembly may be the same.
  • a part of the fin plate 203 can be cut off at a position near the end of the heat exchange assembly 101 while remaining the heat exchange tube 204.
  • the plurality of remained heat exchange tubes 204 are bent, so that the mounting sections 503 of the plurality of heat exchange tubes 204 are converged in the width direction of the heat exchange assembly 101 compared to the main body section 501.
  • the heat exchange assembly 101 can also be obtained without cutting the fin plate 203.
  • an integrated processing of the heat exchange assembly 101 is performed.
  • the mounting sections 503 of the plurality of heat exchange tubes 204 may be converged into one or more rows in the width direction of the heat exchange assembly 101. In the case of multiple rows, that is, the mounting sections 503 of several heat exchange tubes 204 can spread in the length direction of the heat exchange assembly 101 compared to before being converged.
  • the length of the main body section 501 is greater than or equal to the length of the fin plate 203. Both the matching section 502 and the mounting section 503 extend beyond the fin plate 203 in the length direction of the heat exchange assembly 101.
  • the collecting pipe 100 is a cylindrical tube of which a cross section is approximately a perfect circle.
  • An outer diameter of the collecting pipe 100 is less than or equal to a distance between the main body sections 501 of the two heat exchange tubes 204 which are farthest apart in the heat exchange assembly 101.
  • the pipe body 201 of the collecting pipe 100 is provided with an insertion portion. At the insertion portion, the pipe body 201 of the collecting pipe 100 and the mounting section 503 of the heat exchange tube 204 are connected in a sealed manner.
  • the collecting pipe 100 and the fin plate 203 are arranged at intervals or in abutting arrangement, or the pipe body 201 of the collecting pipe 100 and the fin plate 203 are fixedly connected.
  • the insertion portion includes a plurality of insertion holes 205 which extend through the pipe body 201 of the collecting pipe 100.
  • the dimension of the insertion hole 205 is adapted to the end of the heat exchange tube 204.
  • the plurality of insertion holes 205 are distributed at intervals on the pipe body 201 of the collecting pipe 100.
  • the mounting sections 503 of the heat exchange tubes 204 are correspondingly arranged at intervals.
  • the mounting sections 503 of the heat exchange tubes 204 are inserted into the collecting pipe 100 through the insertion holes 205.
  • the pipe body 201 of the collecting pipe 100 and the tube body 2042 of the heat exchange tube 204 are connected in a sealed manner.
  • the number of the insertion holes 205 matches the number of the heat exchange tubes 204, in a one-to-one relationship.
  • the plurality of insertion holes 205 are distributed in multiple rows along the length direction of the collecting pipe 100.
  • the rows of insertion holes 205 of the collecting pipe 100 are alternately staggered.
  • the plurality of heat exchange tubes 204 of one heat exchange assembly 101 are arranged corresponding to at least one row of the insertion holes 205.
  • the number of heat exchange tubes 204 of the heat exchange assembly 101 matches the number of at least one row of the insertion holes 205 corresponding thereto.
  • axes of the mounting sections 503 of the plurality of heat exchange tubes 204 are all located on the same plane, the mounting sections 503 of the heat exchange tubes 204 are arranged in parallel, and the plurality of heat exchange tubes 204 are arranged corresponding to the row of insertion holes 205.
  • the plurality of heat exchange tubes 204 include a first heat exchange tube 204' and a second heat exchange tube 204".
  • the main body section 501, the matching section 502 and the mounting section 503 of the second heat exchange tube 204" are axially coincident.
  • a length direction of the second heat exchange tube 204" is approximately parallel to the length direction of the heat exchange assembly 101.
  • the main body section 501, the matching section 502 and the mounting section 503 of the first heat exchange tube 204' are substantially straight tubes.
  • the length direction of the main body section 501 and the mounting section 503 of the first heat exchange tube 204' is substantially parallel to the length direction of the heat exchange assembly 101.
  • the matching section 502 of the first heat exchange tube 204' is inclined from an end of the main body section 501 close to the collecting pipe 100, and is inclined toward the second heat exchange tube 204'.
  • the number of the first heat exchange tubes 204' is greater than or equal to two.
  • the number of the second heat exchange tubes 204" is greater than or equal to one.
  • the first heat exchange tube 204' is closer to an edge in the width direction of the heat exchange assembly 101 than the second heat exchange tube 204".
  • the plurality of first heat exchange tubes 204' are distributed at both sides of the second heat exchange tubes 204' in the width direction of the heat exchange assembly 101.
  • the number of the first heat exchange tube 204' is four
  • the number of the second heat exchange tube 204" is one
  • the second heat exchange tube 204" has one first heat exchange tube 204' at one side and three first heat exchange tubes 204' at the other side.
  • the number of first heat exchange tubes 204' is four
  • the number of second heat exchange tubes 204" is two
  • the two second heat exchange tubes 204" are located in the middle of the heat exchange assembly 101 in the width direction.
  • the two second heat exchange tubes 204" serve as a unit.
  • the four first heat exchange tubes 204' are distributed at both sides of the unit.
  • the respective numbers of the first heat exchange tubes 204' at both sides may not be too limited.
  • the heat exchange assembly 101 includes three heat exchange tubes 204 as an example.
  • the three heat exchange tubes 204 include one second heat exchange tube 204" and two first heat exchange tubes 204' which bend the matching sections 502 of the first heat exchange tubes 204' at both sides in the width direction of the heat exchange assembly 101 toward the second heat exchange tubes 204" so as to be converged.
  • the heat exchange assembly 101 is connected to the collecting pipe 100, only the heat exchange tubes 204 are inserted into the collecting pipes 100.
  • a certain gap may be left between the converged heat exchange tubes 204.
  • a single heat exchange tube 204 is respectively inserted into the insertion hole 205 of the collecting pipe 100.
  • the mounting sections 503 of the converged heat exchange tubes 204 have no gaps or the gaps are small.
  • the mounting sections 503 of the plurality of heat exchange tubes 204 are sequentially in contact with each other, and the mounting sections 503 of the plurality of heat exchange tubes 204 may be welded in sequence to form an integrated structure, which is inserted into the collecting pipe 100 as a whole.
  • the insertion portion includes a plurality of mounting slots 207 which are adapted to the converged mounting sections 503 of the plurality of heat exchange tubes 204.
  • the mounting sections 503 of the plurality of heat exchange tubes 204 are integrally inserted into the collecting pipe 100 through the mounting slots 207.
  • the pipe body 201 of the collecting pipe 100 and the tube body 2042 of the heat exchange tube 204 are connected in a sealed manner.
  • the mounting slots 207 are also distributed in multiple rows along the length of the collecting pipe 100. Two adjacent mounting slots 207 are arranged in a staggered manner. At the same time, the mounting slot 207 may have an elongated shape in a direction perpendicular to the length of the collecting pipe 100, such as a rectangle shape, an oblong shape, and the like. The shape of the mounting slot 207 can be adapted to an outer contour of the mounting section 503 of the plurality of heat exchange tubes 204 which are converged into an integrated structure.
  • the mounting sections 503 of the plurality of heat exchange tubes 204 are converged in the width direction of the heat exchange assembly 101 compared to the main body section 501. In this way, when the mounting section 503 of the heat exchange tube 204 is connected and combined with the collecting pipe 100, it is beneficial to reduce the size of the collecting pipe 100 in the width direction of the heat exchange assembly 101, thereby helping to reduce the size of the collecting pipe 100 as a whole, reducing the thermal resistance effect caused by the wall thickness of the collecting pipe 100, and improving the heat exchange performance of the heat exchanger. At the same time, the relatively small welding dimension can also reduce the difficulty of welding, which further reduces the risk of leakage, and improves the stability of the heat exchanger.
  • the present disclosure also provides a heat exchanger 10 which includes a plurality of collecting pipes 100 and a plurality of heat exchange assemblies 101.
  • the collecting pipe 100 includes a longitudinal pipe body 201 and a collecting pipe inner cavity 202.
  • the length directions of the collecting pipes 100 are substantially parallel.
  • a plurality of heat exchange assemblies 101 are arranged at intervals.
  • a gap between adjacent heat exchange assemblies 101 forms an air-side flow passage.
  • the heat exchange assembly 101 includes a fin plate 203 and a plurality of heat exchange tubes 204.
  • the heat exchange assembly 101 includes a main heat exchange area 301 in which the plurality of heat exchange tubes 204 are distributed at intervals in the width direction of the heat exchange assembly 101.
  • the heat exchange tube 204 is fixedly connected to the surface of the fin plate 203, or the fin plate 203 includes a plurality of sub-plates 2031 and the heat exchange tube 204 is connected between two adjacent sub-plates 2031.
  • the length of the heat exchange tube 204 is greater than the length of the fin plate 203.
  • the two ends of the heat exchange tube 204 in the length direction extend beyond the fin plate 203.
  • the heat exchange tubes 204 of the heat exchange assembly 101 are divided into at least two groups along the width direction of the heat exchange assembly 101.
  • the number of heat exchange tubes 204 in each group is at least one.
  • Each group of heat exchange tubes 204 are connected between two collecting pipes 100.
  • the inner flow channels 2041 of the heat exchange tubes 204 of the two groups communicate with the inner cavities 202 of two different collecting pipes at one side.
  • the inner flow channels 2041 of the heat exchange tubes 204 of the two groups communicate with the inner cavity 202 of the same collecting pipe 100 at the other side; or the inner flow channels of the heat exchange tubes 204 of the two groups respectively communicate with the inner cavities 202 of two different collecting pipes 100 at the other side, and the inner cavities 202 of the two collecting pipes 100 at the other side communicate with each other, thereby the refrigerant is capable of flowing in opposite directions in the inner flow channels 2041 of the heat exchange tubes 204 of the two groups.
  • the heat exchanger 10 has at least two refrigerant flow processes formed by the plurality of heat exchange assemblies 101 and a plurality of collecting pipes 100.
  • the heat exchange tubes 204 of the plurality of heat exchange assemblies 101 are alternately staggered in the length direction of the collecting pipe 100 with the heat exchange assembly 101 as a unit.
  • the pipe body 201 of each collecting pipe 100 is provided with a plurality of insertion holes 205.
  • the plurality of insertion holes 205 are arranged at intervals.
  • the plurality of insertion holes 205 have multiple rows in the length direction of the collecting pipe 100.
  • the number of insertion holes 205 in each row matches the number of heat exchange tubes 204 connected to the collecting pipe 100 in a single heat exchange assembly 101.
  • Multiple rows of insertion holes 205 are alternately staggered along the length direction of the collecting pipe 100.
  • the dimension of the insertion hole 205 is adapted to the dimension of the heat exchange tube 204.
  • the pipe body 201 of the collecting pipe 100 and the tube body 2042 of the heat exchange tube 204 are connected in a sealed manner.
  • the plurality of heat exchange tubes 204 are all straight tubes extending in the length direction of the heat exchange assembly 101.
  • the plurality of collecting pipes 100 include a first collecting pipe 1001, a second collecting pipe 1002, a third collecting pipe 1003 and a fourth collecting pipe 1004.
  • the first collecting pipe 1001 and the third collecting pipe 1003 are arranged side by side.
  • the second collecting pipe 1002 and the fourth collecting pipe 1004 are arranged side by side.
  • the first collecting pipe 1001 and the second collecting pipe 1002 are oppositely arranged in the length direction of the heat exchange assembly 101.
  • the third collecting pipe 1003 and the fourth collecting pipe 1004 are arranged oppositely in the length direction of the heat exchange assembly 101.
  • the heat exchanger 10 has two refrigerant flow processes in the width direction of the heat exchange assembly 101, and each refrigerant flow process includes at least one heat exchange tube 204 of each heat exchange assembly 101.
  • Two of the plurality of collecting pipes 100 form a group, and each refrigerant flow process includes a group of collecting pipes 100.
  • the two collecting pipes 100 of the group are respectively located at both sides along the length direction of the heat exchange tube 204 corresponding to the refrigerant flow process to which they belong.
  • the second collecting pipe 1002 and the fourth collecting pipe 1004 abut against each other.
  • the tube bodies 201 of the second collecting pipe 1002 and the fourth collecting pipe 1004 are both provided with a first communication hole 208.
  • the first communication hole 208 of the second collecting pipe 1002 is aligned with the first communication hole 208 of the fourth collecting pipe 1004, so that the inner cavity 202 of the second collecting pipe 1002 and the inner cavity of the fourth collecting pipe 1004 are communicated with each other through a mated first communication hole 208 at a position where the two pipe bodies 201 are abutted with each other.
  • the heat exchanger 10 includes a first connection body 209 which is at least partially located between the second collecting pipe 1002 and the fourth collecting pipe 1004.
  • the shape of the first connection body 209 is roughly a triangular prism of which two of its three side surfaces are recessed to form arc-shaped concave surfaces.
  • the shapes of the two arc-shaped concave surfaces respectively correspond to the shapes of partial surfaces of the second collecting pipe 1002 and the fourth collecting pipe 1004.
  • Part of the surfaces of the second collecting pipe 1002 and the fourth collecting pipe 1004 is welded to at least part of the arc-shaped concave surfaces.
  • the welding method may be brazing.
  • the first connection body 209 is provided with a second communication hole 210 extending through the two concave surfaces.
  • the pipe body 201 of the second collecting pipe 1002 and the pipe body 201 of the fourth collecting pipe 1004 are both provided with a third communication hole 211.
  • Two sides of the second communication hole 210 are aligned with the third communication hole 211 of the second collecting pipe 1002 and the third communication hole 211 of the fourth collecting pipe 1004, respectively.
  • the pipe body 201 of the second collecting pipe 1002 is separated from the pipe body 201 of the fourth collecting pipe 1004 at a position where the third communication hole 211 is opened.
  • the third communication hole 211 of the second collecting pipe 1002 is communicated with the third communication hole 211 of the fourth collecting pipe 1004 through the second communication hole 210, so that the inner cavity 202 of the second collecting pipe 1002 is communicated with the inner cavity 202 of the fourth collecting pipe 1004.
  • the heat exchanger 10 includes a second connection body 212 which is provided with a fourth communication hole 213.
  • the second collecting pipe 1002 and the fourth collecting pipe 1004 are provided with a fifth communication hole 214 corresponding to the fourth communication hole 213.
  • the second connection body 212 is welded between the second collecting pipe 1002 and the fourth collecting pipe 1004.
  • the second connection body 212 may have a long plate shape.
  • a side surface of the second connection body 212 facing the second collecting pipe 1002 is an arc-shaped inner concave surface which matches with the pipe body of the second collecting pipe 1002.
  • a side surface of the second connection body 212 facing the second collecting pipe 1002 is an arc-shaped inner concave surface which matches with the pipe body of the fourth collecting pipe 1004.
  • Two sides of the fourth communication hole 213 are aligned with the fifth communication hole 214 of the second collecting pipe 1002 and the fifth communication hole 214 of the fourth collecting pipe 1004, respectively.
  • the inner cavity 202 of the second collecting pipe 1002 and the inner cavity 202 of the fourth collecting pipe 1004 are communicated with each other through the respective fifth communication hole 214 and the fourth communication hole 213.
  • the present disclosure also provides a heat exchanger 10 without the first connection body 209 or the second connection body 212.
  • the plurality of collecting pipes 100 include a first collecting pipe 1001, a second collecting pipe 1002 and a third collecting pipe 1003.
  • the first collecting pipe 1001 and the third collecting pipe 1003 are arranged side by side.
  • the first collecting pipe 1001 and the third collecting pipe 1003 are located at one side in the length direction of the heat exchange assembly 101, and the second collecting pipe 1002 is located at the other side in the length direction of the heat exchange assembly 101.
  • a plurality of groups of heat exchange tubes 204 include a first group of heat exchange tubes S1 and a second group of heat exchange tubes S2 which are adjacent to the first group of heat exchange tubes S1 in the width direction of the heat exchange assembly 101.
  • the first group of heat exchange tubes S1 are connected between the first collecting pipe 1001 and the second collecting pipe 1002.
  • the second group of heat exchange tubes S2 are connected between the third collecting pipe 1003 and the second collecting pipe 1002.
  • the number of heat exchange tubes S1 in the first group and the number of heat exchange tubes S2 in the second group are both greater than or equal to one.
  • the number of heat exchange tubes S1 in the first group and the number of heat exchange tubes S2 in the second group may be the same or different. In the embodiment provided in the present disclosure, the number of the first group of heat exchange tubes S1 is two, and the number of the second group of heat exchange tube S2 is one.
  • Each heat exchange tube 204 of the first group of heat exchange tubes S1 has a first end 11 connected to the first collecting pipe 1001 and a second end 12 connected to the second collecting pipe 1002.
  • Each heat exchange tube 204 of the second group of heat exchange tubes S2 has a third end 13 connected to the third collecting pipe 1003 and a fourth end 14 connected to the second collecting pipe 1002. The second end 12 and the fourth end 14 are converged in the width direction of the heat exchange assembly 101 compared to the first end 11 and the third end 13.
  • the second end portion 12 and the fourth end portion 14 which are converged together can be inserted into the second collecting pipe 1002 as a whole, or welded into an integral structure and then inserted into the second collecting pipe 1002 as a whole. Of course, they can also be inserted into the second collecting pipe 1002 separately, which is not too limited in the present disclosure.
  • refrigerant flow passage may also include more flow channel processes, such as four processes, five processes, etc., which are not too limited in the present disclosure.
  • Three or more refrigerant flow processes are superimposed on the basis of two refrigerant flow processes.
  • FIG. 19 for example, in the case of three processes, compared with the two processes in which a fifth collecting pipe 1005 and a sixth collecting pipe 1006 are added, the first collecting pipe 1001, the third collecting pipe 1003 and the fifth collecting pipe 1005 are arranged side by side, the second collecting pipe 1002, the fourth collecting pipe 1004 and the sixth collecting pipe 1006 are arranged side by side, and the inner cavity 202 of the third collecting pipe 1003 is in communication with the inner cavity 202 of the fifth collecting pipe 1005.
  • the three refrigerant flow processes have flow directions similar to a serpentine twist.
  • first connection body 209 or a second connection body 212 may also be provided between the third collecting pipe 1003 and the fifth collecting pipe 1005.
  • the function of the first connection body 209 or the second connection body 212 has been described in detail above, which will not be repeated here.
  • the plurality of collecting pipes 100 may all be cylindrical tubes with a perfect circular cross section, and tube diameters of the plurality of collecting pipes 100 are all the same.
  • a cross section of the fin plate 203 is a continuous polyline shape or a wave shape.
  • the cross-sectional shape of the heat exchange tube 204 is adapted to the wave crests or the wave troughs of the polyline shape or the wave shape.
  • Part of the outer surface of the heat exchange tube 204 is welded and fixed to the wave crests or the wave troughs of the polyline shape or the wave shape, so that the fin plate 203 partially surrounds the heat exchange tube 204 at the wave crests or the wave troughs of the polyline shape or the wave shape.

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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)
EP20875183.4A 2019-10-08 2020-09-25 Échangeur de chaleur Pending EP3982074A4 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201910948229.0A CN111829362A (zh) 2019-10-08 2019-10-08 换热器
CN201910948701.0A CN111829364A (zh) 2019-10-08 2019-10-08 换热器
CN201910947913.7A CN111829363B (zh) 2019-10-08 2019-10-08 换热器
PCT/CN2020/117710 WO2021068760A1 (fr) 2019-10-08 2020-09-25 Échangeur de chaleur

Publications (2)

Publication Number Publication Date
EP3982074A1 true EP3982074A1 (fr) 2022-04-13
EP3982074A4 EP3982074A4 (fr) 2022-08-10

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EP20875183.4A Pending EP3982074A4 (fr) 2019-10-08 2020-09-25 Échangeur de chaleur

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US (1) US20220325956A1 (fr)
EP (1) EP3982074A4 (fr)
WO (1) WO2021068760A1 (fr)

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EP3982074A4 (fr) 2022-08-10
US20220325956A1 (en) 2022-10-13

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