EP2977706A1 - Collecteur et échangeur de chaleur présentant celui-ci - Google Patents

Collecteur et échangeur de chaleur présentant celui-ci Download PDF

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Publication number
EP2977706A1
EP2977706A1 EP14767307.3A EP14767307A EP2977706A1 EP 2977706 A1 EP2977706 A1 EP 2977706A1 EP 14767307 A EP14767307 A EP 14767307A EP 2977706 A1 EP2977706 A1 EP 2977706A1
Authority
EP
European Patent Office
Prior art keywords
collecting pipe
component
wall part
refrigerant
shaped wall
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.)
Granted
Application number
EP14767307.3A
Other languages
German (de)
English (en)
Other versions
EP2977706A4 (fr
EP2977706B1 (fr
Inventor
Jianlong Jiang
Liuhua YANG
Xiangxun LU
Yandong TANG
Jeffrey Lee Tucker
Kaiquan LI
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.)
Danfoss Micro Channel Heat Exchanger Jiaxing Co Ltd
Original Assignee
Danfoss Micro Channel Heat Exchanger Jiaxing 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 Danfoss Micro Channel Heat Exchanger Jiaxing Co Ltd filed Critical Danfoss Micro Channel Heat Exchanger Jiaxing Co Ltd
Publication of EP2977706A1 publication Critical patent/EP2977706A1/fr
Publication of EP2977706A4 publication Critical patent/EP2977706A4/fr
Application granted granted Critical
Publication of EP2977706B1 publication Critical patent/EP2977706B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F28D1/053—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
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
    • F28F9/0273—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes with multiple holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding
    • F28F2275/064—Fastening; Joining by welding by induction welding or by using microwaves

Definitions

  • the present invention relates to a collecting pipe and a heat exchanger having the collecting pipe.
  • a heat exchanger is disclosed in US patent application US 2011/0315363 A1 , which comprises a first collecting pipe and a second collecting pipe.
  • a distribution plate is disposed within the first collecting pipe in a length direction to divide the first collecting pipe into a refrigeration medium inlet section and a refrigeration medium distribution section, and flat multichannel tubes extend into the first collecting pipe to form a plurality of refrigerant distribution chambers in the refrigeration medium distribution section.
  • Each flat multichannel tube has a first end in contact with the distribution plate in the first collecting pipe and a second end disposed in the second collecting pipe, and a plurality of generally parallel flow paths are formed between the first and second collecting pipes and are at least partially blocked by the distribution plate.
  • An outer wall at one end of the flat multichannel tube is removed to allow a refrigeration medium to enter the interior of the flat tubes from the distribution chambers.
  • High frequency welded collecting pipes are still used in the heat exchanger disclosed in US patent application US 2011/0315363 A1 , so that the problem of the high cost of high frequency welded tubes is not solved.
  • the distribution plate is inserted into the inlet collecting pipe such that the complexity of the manufacturing process is increased, and the product quality is difficult to control.
  • the end of the flat tubes being in contact with the distribution plate tends to result in the flat tubes being blocked by welding.
  • the present invention provides a collecting pipe and a heat exchanger having the collecting pipe, thereby making it possible to solve the problem of the high cost of high frequency welded tubes and improve the heat exchange performance.
  • a collecting pipe comprising: an axially extending inner chamber, comprising a refrigerant inlet chamber and a refrigerant distribution chamber which are separated from each other and in fluid communication with each other, a refrigerant entering said refrigerant inlet chamber and being distributed to heat exchange tubes at said refrigerant distribution chamber; and a plurality of axially extending individual components, wherein at least one of said refrigerant inlet chamber and refrigerant distribution chamber or said collecting pipe is formed by successively placing and connecting the plurality of axially extending individual components in an assembling direction perpendicular to the axial direction.
  • said plurality of axially extending individual components comprises individual first and second components
  • the first component comprises one of said refrigerant inlet chamber and refrigerant distribution chamber
  • at least a portion of a wall of said first component and the second component form the other of said refrigerant inlet chamber and refrigerant distribution chamber by placing and connecting the first and second components in said assembling direction.
  • said first component when viewed in cross section, comprises: a first U-shaped wall part, step parts extending outwardly from two ends of the first U-shaped wall part, and second wall parts extending from outer ends of said step parts towards the side remote from the first U-shaped wall part.
  • said first component when viewed in cross section, comprises: a first U-shaped wall part, step parts extending outwardly from two ends of the first U-shaped wall part, second wall parts extending from outer ends of said step parts towards the side remote from the first U-shaped wall part, and a partition wall part extending between inner ends of said step parts.
  • said first component further comprises protrusions which are formed on the partition wall part and are spaced apart from said second wall parts by a predetermined distance.
  • said first component when viewed in cross section, comprises: a first arc-shaped wall part, step parts extending outwardly from two ends of the first arc-shaped wall part, and second arc-shaped wall parts extending from outer ends of said step parts towards the side remote from the first arc-shaped wall part.
  • said first component when viewed in cross section, comprises: a first arc-shaped wall part, step parts extending outwardly from two ends of the first arc-shaped wall part, second arc-shaped wall parts extending from outer ends of said step parts towards the side remote from the first arc-shaped wall part, and a partition wall part extending between inner ends of said step parts.
  • said first component comprises protrusions which are formed on the partition wall part and are spaced apart from said second arc-shaped wall parts by a predetermined distance.
  • said plurality of axially extending individual components comprise individual first, second and third components, and by means of successively placing and connecting the first component, third component and second component in said assembling direction, the refrigerant inlet chamber is formed between said first component and third component, and the refrigerant distribution chamber is formed between the third component and second component.
  • said first component when viewed in cross section, comprises: a first U-shaped wall part, step parts extending outwardly from two ends of the first U-shaped wall part, and second wall parts extending from outer ends of said step parts towards the side remote from the first U-shaped wall part.
  • said second component when viewed in cross section, has an inverted U-shaped wall part, and two ends of the inverted U-shaped wall part of said second component are arranged on the inner sides of the second wall parts of said first component.
  • the first U-shaped wall part when viewed in cross section, is approximately arc-shaped.
  • said second wall parts when viewed in cross section, are approximately arc-shaped.
  • the inverted U-shaped wall part of said second component when viewed in cross section, is approximately arc-shaped.
  • said first component when viewed in cross section, comprises: a first arc-shaped wall part, step parts extending outwardly from two ends of the first arc-shaped wall part, and second arc-shaped wall parts extending from outer ends of said step parts towards the side remote from the first arc-shaped wall part.
  • said third component when viewed in cross section, has a first end and a second end, and the first and second ends of said third component are respectively placed on and connected to said step parts.
  • said second component when viewed in cross section, has an arc-shaped wall part, and two ends of the arc-shaped wall part of said second component are arranged on the inner sides of the second arc-shaped wall parts of said first component.
  • a central angle corresponding to each component, which constitutes an outer wall of the collecting pipe, of said plurality of axially extending individual components is less than 360 degrees, or when viewed in cross section, a central angle corresponding to the portion forming an outer surface of the collecting pipe of each component, which constitutes an outer wall of the collecting pipe, of said plurality of axially extending individual components is less than 360 degrees.
  • the width of a portion of the inverted U-shaped wall part of said second component overlapping the second wall parts of said first component is greater than or equal to 3 mm.
  • a central angle corresponding to said first component when viewed in cross section, is approximately equal to or less than 180 degrees.
  • said partition wall part protrudes towards said refrigerant distribution chamber.
  • a surface of said partition wall part on the side remote from said refrigerant distribution chamber is integrally formed with a refrigerant pipeline, and the refrigerant pipeline is spaced apart from said first U-shaped wall part.
  • the inner side of said collecting pipe is approximately circular.
  • a heat exchanger comprising heat exchange tubes and a collecting pipe as mentioned above, end portions of said heat exchange tubes being in fluid communication with the refrigerant distribution chamber of the collecting pipe.
  • said collecting pipe has a plurality of openings which are formed in a tube wall of said collecting pipe and arranged in the axial direction, the end portion of said heat exchange tube has a step and is inserted into said opening, and at least a portion of the step of said heat exchange tube abuts a periphery of said opening.
  • said refrigerant inlet chamber and refrigerant distribution chamber are separated by the partition wall part and are in fluid communication with each other through holes in the partition wall part, and at least one of said holes is provided between two adjacent heat exchange tubes.
  • an inlet collecting pipe of the heat exchanger is formed by welding a plurality of components or connecting them in another way, some of the components divide the collecting pipe into two or more separated chambers, the chamber in communication with the flat tubes is the refrigerant distribution chamber, one of the remaining chambers is the refrigerant inlet chamber, and the refrigerant inlet chamber is in communication with the refrigerant distribution chamber through a round hole or another form of opening.
  • the refrigeration medium enters the collecting pipe from the inlet chamber, and then enters the refrigerant distribution chamber through the opening between the two chambers, a plurality of openings are distributed in the length direction of the collecting pipe, each flat tube or multiple flat tubes generally correspond to at least one opening, and the refrigeration medium then enters the flat tubes from the refrigerant distribution chamber, so as to achieve the purpose of uniformly distributing the refrigeration medium.
  • the collecting pipe of the heat exchanger of the present invention is formed by welding two or more individual components or connecting them in another way, such that the cross section of the collecting pipe is divided into at least two individual chambers. Moreover, the inner side of the cross section of the collecting pipe formed by assembling several individual components is circular. As the collecting pipe is formed by connecting multiple components, the problem of the high cost of high frequency welded tubes can be solved. Since the inner side of the cross section of the collecting pipe is circular, a circular end cover can be used, so that the processing is convenient and the reliability is high. The process of inserting a distribution plate into the inside of the collecting pipe is omitted, such that the process complexity is greatly reduced.
  • a heat exchanger 100 such as a micro-channel heat exchanger, according to the embodiment of the present invention, comprises: collecting pipes 1, 7 (for example, an inlet collecting pipe 1 and an outlet collecting pipe 7); heat exchange tubes 2 such as flat tubes; fins 5 arranged between the heat exchange tubes 2; and side plates 3.
  • the heat exchanger can be used in the fields of heating ventilation air conditioning, vehicles, refrigeration and transportation, and can be used as a heat exchanger such as an evaporator, a condenser and a water tank. End portions of the heat exchange tubes 2 are in fluid communication with the refrigerant distribution chamber 19 of the collecting pipe.
  • the collecting pipe 1 has a plurality of openings which are formed in a tube wall of said collecting pipe and arranged in the axial direction
  • the end portion of the heat exchange tube 2 has a step, such as a step positioned at a predetermined distance from an end face of the end portion of the heat exchange tube 1 in an axial direction of the heat exchange tube 1, the cross section of the heat exchange tube 1 between the end face of the end portion and the step being smaller than that of the remaining portion of the heat exchange tube 1.
  • the end portion of the heat exchange tube 2 is inserted into said opening, and at least a portion of the step of the heat exchange tube 2 abuts a periphery of said opening.
  • the length by which the heat exchange tubes 1 are inserted into the collecting pipes 1, 7 can be controlled, the means for positioning the heat exchange tubes 1 are reduced, and the uniformity of the length by which the heat exchange tubes 1 are inserted into the collecting pipes 1, 7 can also be guaranteed.
  • the collecting pipe 1 comprises: an axially extending inner chamber 20, the inner chamber 20 comprising a refrigerant inlet chamber 18 and a refrigerant distribution chamber 19 which are separated from each other and in fluid communication with each other, a refrigerant entering said refrigerant inlet chamber 18 and being distributed to heat exchange tubes 2 at the refrigerant distribution chamber 19; and a plurality of axially extending individual components 11 and 12, wherein at least one of the refrigerant inlet chamber 18 and the refrigerant distribution chamber 19 or the collecting pipe 1 is formed by successively placing and connecting the plurality of axially extending individual components 11 and 12 in an assembling direction A perpendicular to the axial direction.
  • the components 11 and 12 can be connected together by welding or other connecting methods.
  • the inner chamber 20 may have an approximately circular cross section; in addition, as an option, the cross section of the inner chamber 20 may be approximately elliptical or other shapes.
  • the plurality of axially extending individual components 11 and 12 comprises an individual first component 11 and second component 12.
  • the first component 11 comprises one of the refrigerant inlet chamber 18 and the refrigerant distribution chamber 19.
  • the first component 11 comprises the refrigerant inlet chamber 18.
  • At least a portion of a wall of the first component 11 and the second component 12 form the other of the refrigerant inlet chamber 18 and the refrigerant distribution chamber 19 by placing and connecting the first component 11 and second component 12 in the assembling direction A, and in the example shown in Fig. 2 , at least a portion of the wall of the first component 11 and the second component 12 form the refrigerant distribution chamber 19.
  • the first component 11 when viewed in cross section, for example in the view of the cross section shown in Fig. 2 , the first component 11 comprises: a first arc-shaped wall part 111 (an example of a first U-shaped wall part), step parts 112 extending outwardly from two ends of the first arc-shaped wall part 111, second arc-shaped wall parts 113 (an example of second wall parts) extending from outer ends of said step parts 112 towards the side remote from the first arc-shaped wall part 111, and a partition wall part 114 extending between inner ends of said step parts 112.
  • the second component 12 when viewed in cross section, has an arc-shaped wall part (an example of an inverted U-shaped wall part), and two ends of the arc-shaped wall part of the second component 12 are arranged on the inner sides of the second arc-shaped wall parts 113 of the first component 11.
  • the two ends of the arc-shaped wall part of the second component 12 and the second arc-shaped wall parts 113 of the first component 11 can be connected together by means of welding or the like.
  • a surface of said partition wall part 114 on the side remote from the refrigerant distribution chamber 19 is integrally formed with a refrigerant pipeline 115, and the refrigerant pipeline 115 is spaced apart from the first arc-shaped wall part 111.
  • the refrigerant inlet chamber 18 is defined by the refrigerant pipeline 115.
  • a chamber 17 is formed between the partition wall part 114, the refrigerant pipeline 115 and the first arc-shaped wall part 111.
  • each heat exchange tube 2 at least corresponds to one hole 14, that is to say, the number of holes 14 is at least equal to the number of heat exchange tubes 2.
  • the position 4 of each hole 14 is between two adjacent heat exchange tubes 2 in the length or axial direction of the collecting pipe 1. At least one hole such as a round hole or an opening is provided between two adjacent heat exchange tubes 1 in the length or axial direction of the collecting pipe 1.
  • the uniformity of entry of the refrigeration medium into the heat exchange tubes 1 can be ensured, the refrigeration medium flows from the refrigerant inlet chamber 18 to the refrigerant distribution chamber 19, then after a collision with an upper wall of the refrigerant distribution chamber 19, vapor and liquid are mixed uniformly, and then enter the heat exchange tubes 1 again, so that it is possible to ensure the uniformity of the refrigeration medium in the heat exchange tubes 1 and improve the heat exchange performance.
  • each heat exchange tube 1 at least corresponds to one hole 14 in the length or axial direction of the collecting pipe 1, and the number of holes 14 at each position in the length or axial direction of the collecting pipe 1 is less than 3.
  • a central angle corresponding to each component, which constitutes an outer wall of the collecting pipe 1, of the plurality of axially extending individual components 11, 12 is less than 360 or 270 degrees, or when viewed in cross section, a central angle corresponding to the portion forming an outer surface of the collecting pipe 1 of each component, which constitutes an outer wall of the collecting pipe 1, of the plurality of axially extending individual components 11, 12 is less than 360 or 270 degrees.
  • a central angle corresponding to the first component 11 is approximately equal to or less than 180 degrees, thereby facilitating the installation of the second component 12.
  • the collecting pipe 1 of the heat exchanger 100 is formed by welding two or more individual components or connecting them in another way, such that the cross section of the collecting pipe 1 is divided into at least two individual chambers. Moreover, the inner side of the cross section of the collecting pipe formed by assembling several individual components is circular. As the collecting pipe is formed by connecting multiple components, the problem of the high cost of high frequency welded tubes can be solved. Since the inner side of the cross section of the collecting pipe is circular, a circular end cover can be used, so that the processing is convenient and the reliability is high. Furthermore, the process of inserting a distribution plate into the inside of the collecting pipe is omitted, such that the process complexity is greatly reduced. Since the inner side of the collecting pipe 1 is approximately circular, it is possible to ensure that the in-built end cover is designed as circular, so that the collecting pipe 1 has a simple structure and a good sealing performance.
  • a line 119 connecting the end portions of the second arc-shaped wall portions 113 does not exceed a central line of the inner circle of the cross section. In this way, the installation is convenient in the production process, the process complexity is reduced, and the reliability is ensured.
  • the width of a portion of each second arc-shaped wall part 113 overlapping the arc-shaped wall part of the second component 12 is greater than or equal to 3 mm.
  • the collecting pipe 1 of the present invention comprises a refrigerant inlet chamber and a refrigerant distribution chamber which are in communication with each other through holes 14, such as round holes or other forms of openings. In this way, the amount of refrigerant entering the refrigerant distribution chamber can be determined according to requirements, thereby improving the distribution of the refrigerant.
  • the first component 11 further comprises protrusions 116, and the protrusions 116 are formed on the partition wall part 114, such as a surface of the partition wall part 114 facing the refrigerant distribution chamber 19, and are spaced apart from the second arc-shaped wall parts 113 by a predetermined distance.
  • the distance may be approximately equal to the thickness of the two ends of the arc-shaped wall part of the second component 12, such that the two ends of the arc-shaped wall part of the second component 12 are inserted between the protrusions 116 and the second arc-shaped wall parts 113.
  • the plurality of axially extending individual components 11, 12, 13 comprise an individual first component 11, second component 12 and third component 13; the first component 11, the third component 13 and the second component 12 are successively placed in the assembling direction A and are connected together, for example, the first component 11, the third component 13 and the second component 12 are connected together by welding.
  • the refrigerant inlet chamber 18 is formed between the first component 11 and the third component 13, and the refrigerant distribution chamber 19 is formed between the third component 13 and the second component 12.
  • the first component 11 when viewed in cross section, for example in the view of the cross section shown in Fig. 4 , the first component 11 comprises: a first arc-shaped wall part 111, step parts 112 extending outwardly from two ends of the first arc-shaped wall part 111, and second arc-shaped wall parts 113 extending from outer ends of said step parts 112 towards the side remote from the first arc-shaped wall part 111.
  • the third component 13 has a first end and a second end, and the first and second ends of the third component 13 are respectively placed on and connected to the step parts 112.
  • the refrigerant inlet chamber 18 and the refrigerant distribution chamber 19 are in fluid communication with each other through holes 14 in the third component 13.
  • the third component 13 protrudes towards the refrigerant distribution chamber 19.
  • these individual components 11, 12, 13 constituting the collecting pipe 1 are in contact with one another, and in the contacted portion, one component 11 contains the other two components 12, 13.
  • the end portions of the heat exchange tubes 2, such as flat tubes adopt a reduced opening configuration, the end portions are inserted into the openings of the collecting pipe, and the reduced openings are used for positioning relative to the collecting pipe 1; as shown in Fig. 4 , it is possible to avoid welding blockage caused by contact between the heat exchange tubes 2, such as flat tubes, and the third component 13 of the collecting pipe 1.
  • Embodiment 4 according to the present invention is further improved on the basis of embodiment 1. Specifically, as shown in Fig. 5 , the collecting pipe 1 does not have the refrigerant pipeline 115 shown in Fig. 2 , and the refrigerant inlet chamber 18 is defined by the first arc-shaped wall part 111 and the partition wall part 114.
  • the embodiments shown in Figs. 2 and 3 with respect to the embodiments shown in Figs. 4 and 5 , have the advantages of further reducing the refrigerant inlet chamber 18 while ensuring that the other components and the process are the same, so that it is possible to mitigate the problem of two-phase refrigeration medium separation after the refrigeration medium enters the collecting pipe 1, improve the distribution of the refrigeration medium, and improve the heat exchange performance of the heat exchanger.
  • the collecting pipe 1 is used as an inlet collecting pipe, but clearly, the collecting pipe 1 can also be used as an outlet collecting pipe.
  • the present invention provides a collecting pipe and a heat exchanger, in which a plurality of individual components are connected together, so that the problem of two-phase flow distribution in a heat exchanger such as a micro-channel heat exchanger is mitigated, and the heat exchange performance is improved.
  • a heat exchanger such as a micro-channel heat exchanger
  • the problem of unstable product quality can be mitigated in the present invention.
  • the currently existing problem of the high cost of high frequency welded tubes is solved by the present invention.
  • the above-mentioned embodiments are also suitable for collecting pipes with other cross-sectional shapes, such as an oval collecting pipe and a rectangular collecting pipe etc.
  • the first arc-shaped wall part in the above-mentioned embodiments is a first U-shaped wall part
  • the second arc-shaped wall part is a second wall part.
  • the arc-shaped wall part of the second component is an inverted U-shaped wall part of the second component.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Geometry (AREA)
EP14767307.3A 2013-03-19 2014-03-06 Collecteur et échangeur de chaleur présentant celui-ci Active EP2977706B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310089314.9A CN103148729B (zh) 2013-03-19 2013-03-19 集流管以及具有集流管的换热器
PCT/CN2014/072985 WO2014146544A1 (fr) 2013-03-19 2014-03-06 Collecteur et échangeur de chaleur présentant celui-ci

Publications (3)

Publication Number Publication Date
EP2977706A1 true EP2977706A1 (fr) 2016-01-27
EP2977706A4 EP2977706A4 (fr) 2017-01-18
EP2977706B1 EP2977706B1 (fr) 2019-04-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP14767307.3A Active EP2977706B1 (fr) 2013-03-19 2014-03-06 Collecteur et échangeur de chaleur présentant celui-ci

Country Status (6)

Country Link
US (1) US20160138872A1 (fr)
EP (1) EP2977706B1 (fr)
JP (1) JP6371372B2 (fr)
KR (1) KR20150136086A (fr)
CN (1) CN103148729B (fr)
WO (1) WO2014146544A1 (fr)

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WO2014146544A1 (fr) 2014-09-25
US20160138872A1 (en) 2016-05-19
CN103148729B (zh) 2015-01-21
EP2977706A4 (fr) 2017-01-18
JP2016514822A (ja) 2016-05-23
CN103148729A (zh) 2013-06-12
KR20150136086A (ko) 2015-12-04
JP6371372B2 (ja) 2018-08-08
EP2977706B1 (fr) 2019-04-24

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