WO2014058181A1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

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Publication number
WO2014058181A1
WO2014058181A1 PCT/KR2013/008858 KR2013008858W WO2014058181A1 WO 2014058181 A1 WO2014058181 A1 WO 2014058181A1 KR 2013008858 W KR2013008858 W KR 2013008858W WO 2014058181 A1 WO2014058181 A1 WO 2014058181A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
heat exchanger
distribution
refrigerant
header
Prior art date
Application number
PCT/KR2013/008858
Other languages
English (en)
Inventor
Kang Tae Seo
Yong Ki Baek
Seung Hee Ha
Gaku Hayase
Original Assignee
Samsung Electronics 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 KR1020130042780A external-priority patent/KR101473873B1/ko
Application filed by Samsung Electronics Co., Ltd. filed Critical Samsung Electronics Co., Ltd.
Publication of WO2014058181A1 publication Critical patent/WO2014058181A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0251—Massive connectors, e.g. blocks; Plate-like connectors
    • F28F9/0253—Massive connectors, e.g. blocks; Plate-like connectors with multiple channels, e.g. with combined inflow and outflow 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
    • 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
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing

Definitions

  • the following description relates to a heat exchanger, and more particularly, to a heat exchanger having an improved refrigerant distribution structure.
  • a heat exchanger is a device that exchanges heat from a refrigerant with air outside the heat exchanger by using a tube in which the refrigerant flows and is heat-exchanged with air outside the heat exchanger, heat-exchanging fins that contact the tube to increase a heat dissipation area, and a header in which both ends of the tube communicate with each other.
  • the heat exchanger may include an evaporator or a condenser and may constitute a refrigerating cycle device together with a compressor for compressing the refrigerant and an expansion valve for expanding the refrigerant.
  • a heat exchanger includes an inlet pipe through which a refrigerant flows in the heat exchanger, an outlet pipe through which the refrigerant flows out of the heat exchanger, tubes into which the refrigerant flows and is heat-exchanged with air outside the heat exchanger and which are disposed in a plurality of rows including a first row and a second row, a first header having a first chamber in which the refrigerant flows into the heat exchanger through the inlet pipe and the first-row tubes communicate with one another and a second chamber in which the refrigerant flows out of the heat exchanger through the outlet pipe and the second-row tubes communicate with one another, a second header having a third chamber in which the first-row tubes communicate with one another and a fourth chamber in which the refrigerant in the third chamber flows and the second-row tubes communicate with one another, a first partitioning baffle that partitions the first chamber into a first sub-chamber in which the refrigerant flows through the inlet pipe and
  • the refrigerant that flows in the first sub-chamber through the inlet pipe may be mixed in the first sub-chamber and then may flow into the second sub-chamber through the distribution pipe.
  • An end of the distribution pipe may pass through and may be combined with the first partitioning baffle, and the other end of the distribution pipe may pass through and may be combined with a cover baffle combined with the first header to cover one open side of the second sub-chamber.
  • the distribution pipe may have two distribution holes.
  • the first header may include a central barrier rib that partitions the first header into the first chamber and the second chamber, and the distribution hole may be formed to be directed toward the central barrier rib.
  • the heat exchanger may further include a cap that is combined with an outlet of the distribution pipe and seals the outlet of the distribution pipe.
  • the outer wall may be spaced apart from the inner side of the first header by a gap of 1 mm or more.
  • the distribution pipe may include an internal space, an outer wall that constitutes the internal space, and a stopper rib that protrudes from an upper side of the outer wall to limit insertion depths of the first-row tubes.
  • the third chamber may not be partitioned by an additional baffle so that the refrigerant that flows into the third chamber from the first chamber through the front-row tubes is mixed in the third chamber and then flows into the fourth chamber, and the fourth chamber may be partitioned by at least one second partitioning baffle.
  • the second header may include a central barrier rib that partitions the second header into the third chamber and the fourth chamber, and at least one through hole through which the third chamber and the fourth chamber are connected to each other, may be formed in the central barrier rib, the at least one through hole not being formed in a predetermined section of both ends of the central barrier rib.
  • the heat exchanger may further include an inlet connection pipe combined with the inlet pipe, an outlet connection pipe combined with the outlet pipe, and a flange that causes the inlet connection pipe and the outlet connection pipe to be combined with the first header, wherein the flange is combined with the first header by brazing and riveting.
  • the inlet connection pipe and the outlet connection pipe may be combined with an outer side of the flange by brazing using solder rings.
  • the first header may include a body having a central barrier rib and a cover combined with the body, the cover may include a through hole through which a part of the central barrier rib passes, and the flange may include an insertion groove in which at least a part of the central barrier rib that passes through the through hole is inserted.
  • a heat exchanger includes tubes in which a refrigerant flows and is heat-exchanged with air outside the heat exchanger, a header having a chamber formed in the header, a first cover baffle and a second cover baffle that are combined with both ends of the header to cover both open sides of the chamber, a partitioning baffle combined with the header to partition the chamber, a first sub-chamber, which is formed between the first cover baffle and the partitioning baffle and in which the refrigerant flows, a second sub-chamber, which is formed between the partitioning baffle and the second cover baffle and in which the tubes communicate with one another, and a distribution pipe that passes through and is combined with the partitioning baffle and the second cover baffle and is disposed in a lengthwise direction of the header.
  • Distribution pipe through holes through which the distribution pipe passes, may be formed in the partitioning baffle and the second cover baffle.
  • the distribution pipe may include an internal space, an outer wall that constitutes the internal space, and ribs that protrude from the outer wall to reinforce a combination force between the partitioning baffle and the second cover baffle, and the distribution pipe through holes may have shapes corresponding to a cross-section of the distribution pipe.
  • An inlet of the distribution pipe may be disposed in the first sub-chamber so that a refrigerant in the first sub-chamber is able to flow in the distribution pipe through the inlet of the distribution pipe, an outlet of the distribution pipe may be exposed to an outside of the header, an additional cap may be combined with the outlet of the distribution pipe, and the outlet of the distribution pipe may be sealed, and at least one distribution hole through which the refrigerant in the first sub-chamber flows into the second sub-chamber may be formed in the outer wall of the distribution pipe.
  • the cap may be formed of aluminum and may be combined with the distribution pipe by brazing.
  • a heat exchanger includes tubes in which a refrigerant flows and is heat-exchanged with air outside the heat exchanger, a first header and a second header, which are spaced apart from each other in lengthwise directions of the first header and the second header and in which the tubes communicate with one another, one inlet pipe through which the refrigerant flows into the heat exchanger, and a distribution pipe disposed in the first and second headers in the lengthwise directions of the first and second headers to distribute the refrigerant that flows in the heat exchanger through the one inlet pipe to the tubes, wherein the first header includes a first sub-chamber that causes the refrigerant flowing through the one inlet pipe is mixed before being distributed to the tubes and a second sub-chamber, which is partitioned from the first sub-chamber and in which the tubes communicate with each other, the distribution pipe is separately provided from the one inlet pipe not to contact the one inlet pipe, and the refrigerant flowing through the one inlet pipe successively passes through the
  • a heat exchanger including: an inlet pipe through which a refrigerant flows in the heat exchanger, an outlet pipe through which the refrigerant flows out of the heat exchanger, tubes in which the refrigerant flows and is heat-exchanged with air outside the heat exchanger and which are disposed in a plurality of rows including a first row and a second row, a first header having a first chamber in which the refrigerant flows through the inlet pipe and the first-row tubes communicate with each other and a second chamber in which the refrigerant flows out of the heat exchanger through the outlet pipe and the second-row tubes communicate with each other, and a second header having a third chamber in which the first-row tubes communicate with each other and a fourth chamber in which the refrigerant in the third chamber flows and the second-row tubes communicate with each other, wherein the third chamber is not partitioned by a baffle so that the refrigerant flowing through the front-row tubes is mixed in the third chamber and
  • the second header may include a central barrier rib that partitions the second header into the third chamber and the fourth chamber, and at least one through hole through which the third chamber and the fourth chamber are connected to each other, may be formed in the central barrier rib, the at least one through hole not being formed in a predetermined section of both ends of the central barrier rib.
  • a heat exchanger includes tubes into which the refrigerant flows and is heat-exchanged with air outside the heat exchanger and which are disposed in a plurality of rows including a first row and a second row, a first header having a first chamber that communicates with ends of the first-row tubes and a second chamber that communicates with ends of the second-row tubes, a second header having a third chamber that communicates with the other ends of the first-row tubes and a fourth chamber that communicates with the other ends of the second-row tubes and the third chamber, an inlet pipe that communicates with the first chamber so that the refrigerant is able to flow in the heat exchanger when a cooling cycle is circulated and the refrigerant is able to flow out of the heat exchanger when a heating cycle is circulated, an outlet pipe that communicates with the second chamber so that the refrigerant is able to flow out of the heat exchanger when the cooling cycle is circulated and the refrigerant is able to flow in the
  • the distribution baffle may be disposed to correspond to a position of an outlet hole formed in the first header so that the refrigerant flows through the outlet pipe.
  • the first distribution chamber may communicate with the outlet pipe and does not communicate with the tubes, and the second distribution chamber may not communicate with the outlet pipe and the second-row tubes.
  • a part of the refrigerant that flows in the second chamber through the outlet pipe may flow into the first distribution chamber, and the other part of the refrigerant may flow into the second distribution chamber.
  • the refrigerant that flows in the second chamber through the outlet pipe may be guided to the first distribution chamber and the second distribution chamber that are partitioned by the distribution baffle.
  • the refrigerant that flows in the first distribution chamber may pass through the heating distribution pipe and the second distribution chamber and may be guided to the second-row tubes, and the refrigerant flowing in the second distribution chamber may be directly guided to the second-row tubes.
  • the heating distribution pipe may have at least one distribution hole through which the refrigerant in the first distribution chamber is distributed to the second-row tubes.
  • the second-row tubes may include first zone tubes that are positioned in a zone close to the outlet pipe and a second zone tubes that are positioned in a zone distant from the outlet pipe by setting a middle part of a tube that is the closest to the outlet pipe and a tube that is farthest from the outlet pipe to a reference point, and the at least one distribution hole may be formed in a position corresponding to the second zone tubes.
  • the second-row tubes may include first zone tubes that are positioned in a zone close to the outlet pipe and a second zone tubes that are positioned in a zone distant from the outlet pipe by setting a middle part of a tube that is the closest to the outlet pipe and a tube that is farthest from the outlet pipe to a reference point, and a greater part of the refrigerant flowing in the first distribution chamber may be distributed to the second zone tubes via the heating distribution pipe, and a greater part of the refrigerant flowing in the second distribution chamber may be distributed to the first zone tubes.
  • a heat exchanger includes tubes into which the refrigerant flows and is heat-exchanged with air outside the heat exchanger and which are disposed in a plurality of rows including a first row and a second row, a first header having a first chamber that communicates with ends of the first-row tubes and a second chamber that communicates with ends of the second-row tubes, a second header having a third chamber that communicates with the other ends of the first-row tubes and a fourth chamber that communicates with the other ends of the second-row tubes and the third chamber, an inlet pipe that communicates with the first chamber so that the refrigerant is able to flow into the heat exchanger when a cooling cycle is circulated and the refrigerant is able to flow out of the heat exchanger when a heating cycle is circulated, an outlet pipe that communicates with the second chamber so that the refrigerant is able to flow out of the heat exchanger when the cooling cycle is circulated and the refrigerant is able to flow in the
  • a heat exchanger includes one inlet pipe and one outlet pipe, a first header includes a first sub-chamber in which a refrigerant flows and a second sub-chamber in which tubes communicate with one another, and the refrigerant that flows in the first sub-chamber is first mixed and stabilized in the first sub-chamber, then flows into the second sub-chamber through a distribution pipe, and thus can be equally distributed to the tubes.
  • inlet pipe and the outlet pipe are connected to a flange formed of aluminum through an inlet connection pipe and an outlet connection pipe formed of stainless steel, abrasion caused by dissimilar metal joining can be prevented, and the inlet pipe and the outlet pipe are combined with each other by brazing at an outer side of the flange using solder rings and are supported on an inner side of the flange due to enlarged pipe parts of ends of the inlet connection pipe and the outlet connection pipe so that a combination force can be obtained.
  • the heating distribution pipe has a structure in which a flow resistance of the refrigerant is minimized when a cooling cycle is circulated, due to addition of the heating distribution pipe, heat exchange efficiency when the cooling cycle is circulated is not lowered.
  • FIG. 1 is a perspective view illustrating the exterior of a heat exchanger according to an embodiment of the present disclosure
  • FIG. 2 is a perspective view illustrating the exterior of a first header of the heat exchanger illustrated in FIG. 1;
  • FIG. 4 is a side cross-sectional view of the first header of the heat exchanger of FIG. 1;
  • FIG. 5 is a plan cross-sectional view of the first header of the heat exchanger of FIG. 1;
  • FIG. 6 is a plan cross-sectional view of the first header of the heat exchanger of FIG. 1;
  • FIG. 7 is a perspective view illustrating the exterior of a distribution pipe of the heat exchanger of FIG. 1;
  • FIG. 9 is a front view illustrating the exterior of the distribution pipe of the heat exchanger of FIG. 1;
  • FIG. 13 is an exploded perspective view illustrating the configuration of the second header of the heat exchanger of FIG. 1;
  • FIG. 22 is a cross-sectional view illustrating the periphery of the distribution baffle of the heat exchanger of FIG. 17;
  • FIG. 23 is a view illustrating the flow of the refrigerant of the heat exchanger of FIG. 17 when a cooling cycle is circulated.
  • FIG. 24 is a view illustrating the flow of the refrigerant of the heat exchanger of FIG. 17 when a heating cycle is circulated
  • FIG. 1 is a perspective view illustrating the exterior of a heat exchanger according to an embodiment of the present disclosure.
  • a heat exchanger 1 includes a plurality of tubes 10 in which a refrigerant flows and is heat-exchanged with air outside the heat exchanger, heat-exchanging fins 20 that contact the plurality of tubes 10 to increase a heat transfer area with air outside the heat exchanger 1, a first header 100 and a second header 200 in which the plurality of tubes 10 communicate with one another, an inlet pipe 300 through which a refrigerant outside the heat exchanger 1 flows into the heat exchanger 1, an outlet pipe 400 through which the refrigerant flows out of the heat exchanger 1, a flange 500 that fixes the inlet pipe 300 and the outlet pipe 400 to the first header 100, an inlet connection pipe 310 that connects the inlet pipe 300 and the flange 500, and an outlet connection pipe 410 that connects the outlet pipe 400 and the flange 500.
  • the tubes 10 may have a plurality of microchannels formed in the tubes 10 so that the refrigerant can flow into the heat exchanger 1 through the plurality of microchannels.
  • the tubes 10 may be formed to be flat.
  • the tubes 10 may be disposed in two rows including a front row 11 and a rear row 12.
  • the tubes 10 may be disposed in a vertical direction.
  • the tubes 10 may be extrusion-molded using aluminum.
  • the first header 100 and the second header 200 may be disposed spaced apart from each other by a predetermined gap, and the tubes 10 may be disposed between the first header 100 and the second header 200.
  • the first header 100 may be disposed below the tubes 10, and the second header 200 may be disposed above the tubes 10.
  • One inlet pipe 300 and one outlet pipe 400 may be provided. Thus, a sufficient design space for an air conditioner in which the heat exchanger 1 is disposed, can be obtained.
  • the refrigerant may flow in a first chamber (see 140 of FIG. 3) of the first header 100 through the inlet pipe 300.
  • the refrigerant in a second chamber (see 150 of FIG. 4) of the first header 100 may flow out of the heat exchanger 1 through the outlet pipe 400.
  • a diameter of the inlet pipe 300 may be smaller than a diameter of the outlet pipe 400.
  • a refrigerant in a liquid or gaseous state at a low temperature under a low pressure that passes through an expansion valve (not shown) may flow in the inlet pipe 300.
  • the refrigerant that flows through the inlet pipe 300 may pass through the tubes 10, may be evaporated by absorbing external heat and may flow out of the heat exchanger 1 through the outlet pipe 400.
  • the heat exchanger 1 serves as an evaporator.
  • the condensed refrigerant may flow out of the heat exchanger 1 through the inlet pipe 300.
  • the heat exchanger 1 may serve as a condenser.
  • the heat exchanger 1 of FIG. 1 is used as an evaporator.
  • the heat exchanger 1 of FIG. 1 may be used as a condenser when the refrigerant is circulated in a reverse cycle, as described above.
  • FIG. 2 is a perspective view illustrating the exterior of a first header of the heat exchanger illustrated in FIG. 1
  • FIG. 3 is an exploded perspective view illustrating the configuration of the first header of the heat exchanger of FIG. 1
  • FIG. 4 is a side cross-sectional view of the first header of the heat exchanger of FIG. 1
  • FIG. 5 is a plan cross-sectional view of the first header of the heat exchanger of FIG. 1
  • FIG. 6 is a lengthwise cross-sectional view of the first header of the heat exchanger of FIG. 1
  • FIG. 7 is a perspective view illustrating the exterior of a distribution pipe of the heat exchanger of FIG. 1
  • FIG. 8 is a plan view illustrating the exterior of the distribution pipe of the heat exchanger of FIG. 1
  • FIG. 9 is a front view illustrating the exterior of the distribution pipe of the heat exchanger of FIG. 1.
  • the first header 100 of the heat exchanger 1 of FIG. 1 includes a body 110, a cover 120 combined with the body 110, and chambers 140 and 150, which are disposed in the body 110 and the cover 120 and in which the refrigerant flows.
  • the body 110 includes a bottom part 112 and a central barrier rib 111 that protrudes from a center of the bottom part 112, and the cover 120 includes an upper wall 121 and sidewalls 122 that extend from both sides of the upper wall 121.
  • Combination grooves 113 may be formed in the bottom part 112, and ends of the sidewalls 122 of the cover 120 are inserted in the combination grooves 113 so that the body 110 and the cover 120 can be securely combined with each other.
  • the body 110 and the cover 120 may be formed of aluminum and may be combined with each other by brazing.
  • the chambers 140 and 150 may be partitioned into a first chamber 140 and a second chamber 150 by the central barrier rib 111.
  • the front-row tubes 11 may be connected to the first chamber 140, and the rear-row tubes 12 may be connected to the second chamber 150.
  • the refrigerant may flow into the first chamber 140 through the inlet pipe 300, and the refrigerant in the second chamber 150 may flow out of the second chamber 150 through the outlet pipe 400.
  • a through hole 123 may be formed in the center of the upper wall 121, a through protrusion 111a is formed on a top end of the central barrier rib 111 to pass through the through hole 123 so that the first chamber 140 and the second chamber 150 can be fundamentally separated from each other.
  • Both sides of the first chamber 140 and the second chamber 150 may be opened, and cover baffles 130, 131, and 132 may be combined with both ends of the first header 100 to cover both open sides of the first chamber 140 and the second chamber 150.
  • the cover baffles 130, 131, and 132 may be inserted into cover baffle holes 114 and 127 formed in the body 110 and the cover 120, and thus may be combined with the first header 100.
  • the cover baffles 130, 131, and 132 may be combined with the first header 100 by brazing.
  • Tube holes 124 in which the tubes 10 may be inserted may be formed in the cover 120.
  • An inlet hole 125 through which the refrigerant flowing through the inlet pipe 300 may pass, and an outlet hole 126 in which the refrigerant flows out of the heat exchanger 1 through the outlet pipe 400, may be formed in the cover 120.
  • the first chamber 140 is partitioned into a first sub-chamber 141 and a second sub-chamber 142.
  • the first chamber 140 may be partitioned into the first sub-chamber 141 and the second sub-chamber 142 by a partitioning baffle 143 combined with the first header 100.
  • the partitioning baffle 143 may be inserted in partitioning baffle holes 115 and 128 formed in the body 110 and the cover 120, and may be combined with the first header 100.
  • the partitioning baffle 143 may be combined with the first header 110 by brazing.
  • the first sub-chamber 141 may be constituted by the partitioning baffle 143, the first cover baffle 131, the body 110, and the cover 120
  • the second sub-chamber 142 may be constituted by the partitioning baffle 143, the second cover baffle 132, the body 110, and the cover 120.
  • the refrigerant may flow into the first sub-chamber 141 through the inlet pipe 300, and the front-row tubes 11 may be connected to the second sub-chamber 142.
  • the refrigerant that flows in the first sub-chamber 141 may flow into the second sub-chamber 142 through a distribution pipe 600 that will be described later. That is, the first chamber 140 is partitioned by the partitioning baffle 143 into the first sub-chamber 141 in which the refrigerant flows, and the second sub-chamber 142 in which the refrigerant in the first sub-chamber 141 flows and which is connected to the front-row tubes 11.
  • the distribution pipe 600 is installed at the first header 100 and passes through the partitioning baffle 143 and is disposed in a lengthwise direction of the first chamber 140 so that the refrigerant flowing in the first sub-chamber 141 can flow into the second sub-chamber 142.
  • the distribution pipe 600 may equally distribute the refrigerant in the first sub-chamber 141 to the front-row tubes 11.
  • the distribution pipe 600 has a shape of a pipe having both open sides, an end of the distribution pipe 600 may pass through and may be combined with the partitioning baffle 143, and the other end of the distribution pipe 600 may pass through and may be combined with the second cover baffle 132.
  • Distribution pipe through holes 132a and 143a, through which the distribution pipe 600 passes, may be formed in the partitioning baffle 143 and the second cover baffle 132.
  • the distribution pipe through holes 132a and 143a may have shapes corresponding to a cross-sectional shape of the distribution pipe 600 so that a space between the distribution pipe 600 and the distribution pipe through holes 132a and 143a may be sealed.
  • two distribution holes 680 may be formed so that they can be spaced apart from each other by a predetermined gap. Also, preferably, the positions of the distribution holes 680 may be directed toward the central barrier rib 111.
  • the cross-sectional area of the distribution pipe 680 may be approximately 15% to approximately 30% of the cross-sectional area of the first chamber 140.
  • the refrigerant that flows in the first chamber 140 through the inlet pipe 300 may be uniformly dispersed and may be distributed to the front-row tubes 11.
  • the distribution pipe 600 may include an internal space 620, an outer wall 610 that constitutes the internal space 620, and a plurality of ribs 640, 650, 660, and 670 that protrude from the outer wall 610.
  • the plurality of ribs 640, 650, 660, and 670 may include support ribs 640, 650, and 660 that protrude from the outer wall 610 and are supported on an inner side of the first header 100, to cause the outer wall 610 to be spaced apart from the inner side of the first header 100 by a predetermined gap, and a stopper rib 670 that may limit an insertion depth of the tubes 10.
  • the support ribs 640, 650, and 660 may include lower support ribs 640 that protrude from a lower side of the outer wall 610, left support ribs 650 that protrude from a left side of the outer wall 610, and right support ribs 660 that protrude from a right side of the outer wall 610, based on directions from which the support ribs 640, 650, and 660 protrude.
  • the outer wall 610 of the distribution pipe 600 and the inner side of the first header 100 may be spaced apart from each other by a gap of approximately 1 mm or more to be most suitable for the flow of the refrigerant.
  • Respective left support ribs 650a, 650b, and 650c and respective right support ribs 660a, 660b, and 660c may also be formed spaced apart from one another by a predetermined gap, and flow spaces in which the refrigerant may flow, may be formed between the respective left support ribs 650a, 650b, and 650c and the respective right support ribs 660a, 660b, and 660c.
  • the refrigerant that flows in the second sub-chamber 142 through the distribution hole 680 of the distribution pipe 600 may easily flow in the second sub-chamber 142 and may be distributed to the front-row tubes 11.
  • the stopper rib 670 may protrude from an upper portion of the outer wall 610 and may prevent the tubes 10 from being excessively inserted into the first chamber 140.
  • An increase in resistance of the refrigerant caused by installation of the distribution pipe 600 can be minimized by the shape and the assembling structure of the distribution pipe 600.
  • a differential pressure between a refrigerant that flows in a general heat exchanger through an inlet pipe and a refrigerant that flows out of the general heat exchanger through an outlet pipe is approximately 0.2 kgf/cm 2 to approximately 0.5 kgf/cm 2
  • a differential pressure between a refrigerant that flows in the heat exchanger 1 through the inlet pipe 300 and a refrigerant that flows out of the heat exchanger 1 through the outlet pipe 400, as illustrated in FIG. 1 may be maintained at approximately 0.5 kgf/cm 2 to approximately 2.0 kgf/cm 2 , even though the distribution pipe 600 is installed at the heat exchanger 1 of FIG. 1.
  • FIG. 10 is a side cross-sectional view of the first header illustrating a combined structure of an inlet pipe and an outlet pipe of the heat exchanger of FIG. 1
  • FIG. 11 is a plan view of the first header illustrating the periphery of the inlet pipe and the outlet pipe of the heat exchanger of FIG. 1.
  • the inlet pipe 300 of the heat exchanger 1 of FIG. 1 may be securely combined with the first header 100 via the inlet connection pipe 310 and the flange 500.
  • the outlet pipe 400 may be securely combined with the first header 100 via the outlet connection pipe 410 and the flange 500.
  • the inlet connection pipe 310 and the outlet connection pipe 410 may be formed of stainless steel and thus may prevent abrasion caused by dissimilar material joining of the inlet pipe 300 and the outlet pipe 400 formed of copper and the first header 100 and the flange 500 formed of aluminum.
  • the inlet pipe 300 and the outlet pipe 400 may be inserted in and combined with an upper enlarged pipe part 311 of the inlet connection pipe 310 and an upper enlarged pipe part 411 of the outlet connection pipe 410 by brazing.
  • the inlet connection pipe 310 and the outlet connection pipe 410 may be combined with the flange 500 by brazing.
  • a solder ring combination groove 510 may be formed in an outer side of the flange 500, and solder rings 320 and 420 may be inserted in the solder ring combination groove 510 so that the inlet connection pipe 310 and the outlet connection pipe 410 can be easily combined with the flange 500 by brazing.
  • enlarged pipe parts may be formed below the inlet connection pipe 310 and the outer connection pipe 410 and thus may be supported on the inner side of the flange 500.
  • the flange 500 may be combined with an outer side of the first header 100 by brazing. Also, the flange 500 may be combined with the first header 100 using rivets to reinforce a combination force. To this end, rivet holes 520 and 129 may be formed in the flange 500 and the first header 100.
  • an insertion groove 530 in which the through protrusions 111a of the center barrier rib 111 of the first header 100 are inserted may be formed in a lower portion of the flange 500.
  • the through protrusions 111a may be used to fundamentally separate the first chamber 140 and the second chamber 150 of the first header 100 from each other, as described above.
  • the refrigerant outside the heat exchanger 1 may successively pass through the inlet pipe 300, the inlet connection pipe 310, the flange 500, and the inlet hole 125 and may flow into the first chamber 140, and the refrigerant in the second chamber 150 may successively pass through the outlet hole 126, the flange 500, the outlet connection pipe 410, and the outlet pipe 400 and may flow out of the heat exchanger 1.
  • FIG. 12 is a perspective view illustrating the exterior of a second header of the heat exchanger of FIG. 1
  • FIG. 13 is an exploded perspective view illustrating the configuration of the second header of the heat exchanger of FIG. 1
  • FIG. 14 is a side cross-sectional view of the second header of the heat exchanger of FIG. 1
  • FIG. 15 is a plan cross-sectional view of the second header of the heat exchanger of FIG. 1
  • FIG. 16 is a lengthwise cross-sectional view of the second header of the heat exchanger of FIG. 1.
  • the second header 200 of the heat exchanger 1 of FIG. 1 includes a body 210, a cover 220 combined with the body 210, and chambers 240 and 250, which are formed in the body 210 and the cover 220, and in which the refrigerant flows.
  • the body 210 includes a bottom part 212, a central barrier rib 211 that protrudes from a center of the bottom part 212, and the cover 220 includes a lower wall 221 and sidewalls 222 that extend from both sides of the lower wall 221.
  • a combination groove may be formed in the bottom part 212, and ends of the sidewalls 222 may be inserted in the combination groove so that the body 210 and the cover 220 can be securely combined with each other.
  • the body 210 and the cover 220 may be formed of aluminum and may be combined with each other by brazing.
  • At least one through hole 214 through which the refrigerant in the third chamber 240 may flow into the fourth chamber 250, may be formed in the central barrier rib 211.
  • the through hole 214 may not be formed in a predetermined section (see 215 of FIG. 16) of both ends of the central barrier rib 211.
  • a through hole 223 may be formed in the center of the lower wall 221, a through protrusion 211a may be formed in a lower end of the central barrier rib 211 to pass through the through hole 223 so that the through protrusion 211a may pass through and may be combined with the through hole 223.
  • Both sides of the third chamber 240 and the fourth chamber 250 may be opened, and cover baffles 230 may be combined with both ends of the second header 200 to cover both open sides of the third chamber 240 and the fourth chamber 250.
  • the cover baffles 230 may be inserted in cover baffle holes 216 and 224 formed in the body 210 and the cover 220 and thus may be combined with the second header 200.
  • the cover baffles 230 may be combined with the second header 200 by brazing.
  • Tube holes 225 in which the tubes 10 may be inserted, may be formed in the cover 220.
  • partitioning baffles 260 that partition the fourth chamber 250 into a plurality of sub-chambers 251, 252, and 253, may be combined with the second header 200.
  • Partitioning baffle holes 217, in which the partitioning baffles 260 are inserted, may be formed in the body 210, and partitioning baffle holes, in which the partitioning baffles 260 are inserted, may also be formed in the cover 220.
  • the third chamber 240 may not be partitioned by an additional partitioning baffle.
  • the refrigerant that flows in the third chamber 240 through the front-row tubes 11 may flow into the fourth chamber 250 after it is mixed and stabilized in the third chamber 240.
  • the heat exchanger 1 of FIG. 1 includes the first header 100 having the first chamber 140 and the second chamber 150, the second header 200 having the third chamber 240 and the fourth chamber 250, the tubes 10 that are disposed in two rows including the front row 11 and the rear row 12, and the heat-exchanging fins 20 disposed between the tubes 10. Also, only one inlet pipe 300 and only one outlet pipe 400 are provided and are connected to the first chamber 140 of the first header 100.
  • the refrigerant that flows in the first chamber 140 of the first header 100 through the inlet pipe 300 is first mixed and stabilized in the first sub-chamber 141 of the first chamber 140 and flows into the second sub-chamber 142 of the first chamber 140 through the distribution pipe 600.
  • the refrigerant that flows into the second sub-chamber 142 may be equally distributed to the front-row tubes 11.
  • the refrigerant in the third chamber 240 flows into the fourth chamber 250 through the through hole 214 formed in the central barrier rib 211 that partitions the second header 200 into the third chamber 240 and the fourth chamber 250, and the refrigerant in the fourth chamber 250 passes through the rear-row tubes 12, is heat-exchanged with air outside the heat exchanger 1, and flows into the second chamber 150 of the first header 100.
  • the refrigerant in the second chamber 150 flows out of the heat exchanger 1 through the outlet pipe 400.
  • FIG. 17 is an exploded perspective view illustrating the configuration of a first header of a heat exchanger, according to an embodiment of the present disclosure
  • FIG. 18 is a side cross-sectional view of the first header of the heat exchanger illustrated in FIG. 17,
  • FIG. 19 is a perspective view illustrating a heating distribution pipe of the heat exchanger of FIG. 17,
  • FIG. 20 is a view illustrating the flow of a refrigerant in a second chamber of the heat exchanger of FIG. 17 when a heating cycle is circulated
  • FIG. 21 is an enlarged cross-sectional view illustrating the flow of the refrigerant on the periphery of a distribution baffle of the heat exchanger of FIG. 17 when the heating cycle is circulated
  • FIG. 22 is a cross-sectional view illustrating the periphery of the distribution baffle of the heat exchanger of FIG. 17.
  • a first header 710 of the heat exchanger further includes heating distributors 800 and 900 that are disposed in a second chamber 150 of the first header 710 to equally distribute a refrigerant in a gaseous state at a high temperature under a high pressure that flows in the second chamber 150 of the first header 710 through an outlet pipe 400 to second-row tubes 12 when a heating cycle is circulated, i.e., when the heat exchanger is used as a condenser, unlike in FIG. 1.
  • the heat exchanger illustrated in FIG. 17 is configured by adding the heating distributors 800 and 900 to the heat exchanger of FIG. 1 and improves distribution of the refrigerant when the heating cycle is circulated, thereby improving heat exchange efficiency.
  • the heating distributors 800 and 900 include a distribution baffle 900 and a heating distribution pipe 800.
  • the distribution baffle 900 partitions the second chamber 150 into a first distribution chamber (see 151 of FIG. 20) and a second distribution chamber (see 152 of FIG. 20).
  • the distribution baffle 900 may pass through and may be combined with the body 110, like in other baffles.
  • the distribution baffle 900 may be disposed under an outlet hole 126 of a cover 120.
  • the first distribution chamber 151 communicates with the outlet pipe 400 and an outlet connection pipe 410 and does not communicate with the tubes 10, 11, and 12.
  • the second distribution chamber 152 communicates with the outlet pipe 400 and the outlet connection pipe 410 and communicates with the second-row tubes 12.
  • the refrigerant that flows through the outlet pipe 400 when the heating cycle is circulated is divided by the distribution baffle 900, and a part of the divided refrigerant may flow into the first distribution chamber 151, and the other part of the divided refrigerant may flow into the second distribution chamber 152.
  • a distribution pipe 700 that is disposed in the first chamber 140 and causes a first sub-chamber 141 and a second sub-chamber 142 to communicate is referred to as a cooling distribution pipe 700, to differentiate the cooling distribution pipe 700 from the heating distribution pipe 800.
  • the heating distribution pipe 800 causes the first distribution chamber 151 and the second distribution chamber 152 to communicate and passes through and is combined with the distribution baffle 900.
  • the heating distribution pipe 800 has a shape of a pipe having both open sides and an internal space 820, an end of the heating distribution pipe 800 may pass through and may be combined with the distribution baffle 900, and the other end thereof may pass through and may be combined with a cover baffle 720.
  • One side that constitutes an outlet, between both open sides of the heating distribution pipe 800 may be exposed to an outside of the first header 710, and a cap 890 may be combined with the exposed side of the heating distribution pipe 800 to prevent the refrigerant from flowing out of the heat exchanger.
  • the heating distribution pipe 800 may have at least one distribution hole 880 that is formed spaced apart from each other by a predetermined gap from the distribution baffle 900 to the second distribution chamber 152 so that the refrigerant flowing in the first distribution chamber 151 can flow into the second distribution chamber 152.
  • the distribution hole 880 may be formed to be directed toward a central barrier rib 111.
  • the refrigerant in the first distribution chamber 151 may pass through the internal space 820 and the distribution hole 880 of the heating distribution pipe 800 and may flow into the second distribution chamber 152.
  • the heating distribution pipe 800 may include an outer wall 810 that constitutes the internal space 820 and a plurality of ribs 840, 850, 860, and 870 that protrude from the outer wall 810.
  • the plurality of ribs 840, 850, 860, and 870 may include support ribs 840, 850, and 860 that protrude from the outer wall 810 to separate the outer wall 810 from an inner side of the first header 710 and are supported on the inner side of the first header 710, and a stopper rib 870 that limits insertion depths of the tubes 10.
  • the support ribs 840, 850, and 860 may include lower support ribs 840 that protrude from a lower side of the outer wall 810, left support ribs 850 that protrude from a left side of the outer wall 810, and right support ribs 860 that protrude from a right side of the outer wall 810, based on directions from which the support ribs 840, 850, and 860 protrude.
  • the stopper rib 870 may protrude from an upper portion of the outer wall 810 and may prevent the tubes 10 from being excessively inserted into the second chamber 150.
  • the heating distribution pipe 800 may have the same structure as that of the cooling distribution pipe 700 except that the length of the heating distribution pipe 800 is slightly greater than that of the cooling distribution pipe 700 and the position of the distribution hole 880 is different from that of the distribution hole 680.
  • the greater part of the refrigerant that flows in the first distribution chamber 151 may be distributed to the tubes in the second zone Y, and the greater part of the refrigerant that flows in the second distribution chamber 152 may be distributed to the tubes in the first zone X.
  • the size of resistance exerted on the refrigerant when the cooling cycle is circulated can be minimized. That is, a part of the refrigerant that flows in the second chamber 150 of the first header 710 through the rear-row tubes 12 when the cooling cycle is circulated may flow out of the outlet pipe 400 through the heating distribution pipe 800 and the first distribution chamber 151, and the other part of the refrigerant may flow out of the outlet pipe 400 through the second distribution chamber 152 without passing the heating distribution pipe 800.
  • FIG. 23 is a view illustrating the flow of the refrigerant of the heat exchanger of FIG. 17 when a cooling cycle is circulated
  • FIG. 24 is a view illustrating the flow of the refrigerant of the heat exchanger of FIG. 17 when a heating cycle is circulated.
  • the refrigerant flows in the first chamber 140 of the first header 710 through the inlet pipe 300.
  • the refrigerant passes through the front-row tubes 11, is heat-exchanged with air outside the heat exchanger, flows into the third chamber 240 of the second header 200 and the fourth chamber 250 of the second header 200, and then passes through the rear-row tubes 12 and is heat-exchanged with air outside the heat exchanger. Subsequently, the refrigerant flows out of the heat exchanger through the second chamber 150 of the first header 710 and the outlet pipe 400.
  • the refrigerant that flows in the first chamber 140 of the first header 710 through the inlet pipe 300 may be a refrigerant in a liquid or gaseous state at a low temperature under a low pressure and may be mixed and distributed through the cooling distributor including the partitioning baffle 143 and the distribution pipe 600 disposed in the first chamber 140.
  • the refrigerant flows in the second chamber 150 of the first header 710 through the outlet pipe 400.
  • the refrigerant passes through the rear-row tubes 12, is heat-exchanged with air outside the heat exchanger, flows into the fourth chamber 250 of the second header 200 and the third chamber 240 of the second header 200, and then passes through the front-row tubes 11 and is heat-exchanged with air outside the heat exchanger. Subsequently, the refrigerant flows out of the heat exchanger through the first chamber 140 of the first header 710 and the inlet pipe 300.
  • the refrigerant that flows in the second chamber 150 of the first header 710 through the outlet pipe 400 may be a refrigerant in a gaseous state at a high temperature under a high pressure and may be mixed and distributed through the heating distributor including the distribution baffle 900 and the heating distribution pipe 800 disposed in the second chamber 150.

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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)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Abstract

La présente invention concerne un échangeur de chaleur possédant une structure de distribution perfectionnée dans laquelle un tuyau d'entrée est raccordé à un collecteur qui est séparé en une première sous-chambre, dans laquelle un fluide frigorigène s'écoule par le tuyau d'entrée, et en une seconde sous-chambre, dans laquelle des tubes communiquent les uns avec les autres, et un tuyau de distribution est installé au niveau du collecteur et amène la première sous-chambre et la seconde sous-chambre à communiquer de sorte que le fluide frigorigène contenu dans la première sous-chambre puisse être distribué aux tubes. Le tuyau de distribution peut traverser un déflecteur de séparation et être combiné à celui-ci, ledit déflecteur de séparation étant combiné au collecteur afin de séparer une chambre du collecteur en première sous-chambre et en seconde sous-chambre.
PCT/KR2013/008858 2012-10-09 2013-10-04 Échangeur de chaleur WO2014058181A1 (fr)

Applications Claiming Priority (4)

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KR20120111721 2012-10-09
KR10-2012-0111721 2012-10-09
KR10-2013-0042780 2013-04-18
KR1020130042780A KR101473873B1 (ko) 2012-10-09 2013-04-18 열교환기

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CN110645821A (zh) * 2018-06-26 2020-01-03 三花控股集团有限公司 集管箱及换热器
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KR102600972B1 (ko) 2018-12-28 2023-11-13 삼성전자주식회사 열교환기
EP3855059B1 (fr) * 2020-01-24 2023-11-15 Aptiv Technologies Limited Diviseur d'écoulement passif et système de refroidissement de liquide le comprenant
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US20140096944A1 (en) 2014-04-10
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