WO2020063972A1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

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Publication number
WO2020063972A1
WO2020063972A1 PCT/CN2019/109087 CN2019109087W WO2020063972A1 WO 2020063972 A1 WO2020063972 A1 WO 2020063972A1 CN 2019109087 W CN2019109087 W CN 2019109087W WO 2020063972 A1 WO2020063972 A1 WO 2020063972A1
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WO
WIPO (PCT)
Prior art keywords
header
tube
inner cavity
heat exchange
support
Prior art date
Application number
PCT/CN2019/109087
Other languages
English (en)
Chinese (zh)
Inventor
祁照岗
黄宁杰
高强
蒋建龙
牛玉娇
邵春宇
Original Assignee
浙江三花智能控制股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江三花智能控制股份有限公司 filed Critical 浙江三花智能控制股份有限公司
Publication of WO2020063972A1 publication Critical patent/WO2020063972A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • 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

Definitions

  • the present application relates to the technical field of heat exchangers, and in particular, to a heat exchanger.
  • the present application proposes a heat exchanger, which can improve the uniformity of refrigerant distribution in the heat exchanger.
  • the heat exchanger includes: a collecting tube having a tube wall and an inner cavity; the tube wall of the collecting tube includes an arc-shaped wall and a bottom wall; A side edge and a second side edge, the bottom wall has a first side edge and a second side edge, and the first side edge of the curved wall is connected to the first side edge of the bottom wall, and the arc shape
  • the second side edge of the wall is connected to the second side edge of the bottom wall;
  • the heat exchange tube has a plurality of heat exchange tubes, and the plurality of heat exchange tubes are spaced apart from each other along the length of the header,
  • the heat exchange tube has a first end and an inner cavity, and the first end of the heat exchange tube is inserted into the inner cavity of the header through the bottom wall, and the inner cavity of the heat exchange tube and the header
  • the inner cavity of the tube communicates, and the distance between the first end of the heat exchange tube and the bottom wall is 0-5 mm.
  • the tube wall of the header includes an arc-shaped wall and a bottom wall.
  • the depth of the end of the tube extending into the header is 0-5 mm.
  • the depth of the inner cavity of the tube is small, and the refrigerant that enters the inner cavity of the header from the fluid inlet can be evenly distributed to a plurality of heat exchange tubes, thereby relatively improving the uniformity of the refrigerant distribution in the heat exchanger.
  • the distance between the first end of the heat exchange tube and the bottom wall is 0-2 mm.
  • the cross-section of the header is generally D-shaped.
  • the arc-shaped wall has a semi-circular cross-section.
  • the heat exchanger further includes a distribution tube having a first end, a second end, a tube wall, and an inner cavity
  • the header has a first end and a second end.
  • the first end of the distribution tube is a fluid inlet
  • the second end of the distribution tube is closed and extends from the first end of the header into the inner cavity of the header
  • the wall of the distributor tube has A through hole communicating the inner cavity of the header and the inner cavity of the distribution tube
  • a plurality of the through holes are provided, and the plurality of the through holes are arranged along a length direction of the distribution pipe.
  • the through hole may be opened at any position of the distribution pipe along a circumferential direction of the distribution pipe.
  • the heat exchanger further includes a support assembly including a first support, the first support having a first end and a second end, the distribution pipe having an outer peripheral surface, and A first end of the first support is connected to the header, and a second end of the first support is located below the distribution pipe and is in contact with an outer peripheral surface of the distribution pipe.
  • a first end of the first support is connected to the bottom wall, and a second end of the first support extends from the bottom wall into the inner cavity of the header, and A second end of the first support member is in contact with an outer peripheral surface of the distribution pipe.
  • the support assembly further includes a second support member that extends from the second end of the header into the inner cavity of the header, the second support It is located below the distribution pipe and is in contact with the outer peripheral surface of the distribution pipe.
  • the header is placed horizontally and has a length greater than 250 mm
  • the header is a semi-circular tube
  • the diameter of the header is larger than the width of the heat transfer tube
  • the header has a first One end and the second end
  • the tube wall of the header has a plurality of jacks
  • the jacks are arranged along the length of the header
  • the first end of the heat transfer tube passes through the insert
  • a hole is inserted into the inner cavity of the header, the distance between the first end of the heat exchange tube and the bottom wall is 0-2mm
  • the heat exchanger further includes: a fin, the fin is provided Between adjacent heat exchange tubes, at least part of the fins are connected to the heat exchange tubes; a distribution tube having a first end, a second end, a tube wall, an inner cavity, and an outer peripheral surface
  • a first end of the distribution tube is a fluid inlet
  • a second end of the distribution tube is closed and extends from the first end of the header into the inner cavity of the header, and the
  • the wall of the distribution tube has a plurality of through holes, and the plurality of through holes are along the distribution tube.
  • the through hole communicates with the inner cavity of the header and the inner cavity of the distribution pipe, and the through hole may be opened at any position of the distribution pipe in the circumferential direction of the distribution pipe;
  • a support assembly including a first support and a second support, the first support having a plurality of the plurality of first support members arranged along a length direction of the header, each The first support has a first end and a second end, the first end of the first support is connected to the bottom wall, and the second end of the first support extends from the bottom wall into the The inner cavity of the header, and the second end of the first support member is in contact with the outer peripheral surface of the distribution tube; the second support member extends from the second end of the header into the header The inner cavity of the tube, the second support is in contact with the outer peripheral surface of the distribution tube.
  • the embodiment of the present application also relates to a heat exchanger, which includes:
  • a current collecting tube having a tube wall and an inner cavity, and the tube wall of the current collecting tube includes an arc-shaped wall and a bottom wall;
  • a plurality of heat exchange tubes are arranged at intervals along the length of the header, and each of the heat exchange tubes has a first end and an inner cavity,
  • the inner cavity of the heat pipe is in communication with the inner cavity of the header, the first end of the heat exchange tube is inserted through the bottom wall into the inner cavity of the header, and the first end of the heat exchange tube
  • the depth of insertion into the inner cavity of the header is 0-5mm;
  • a fin which is disposed between the adjacent heat exchange tubes and is in contact with the adjacent heat exchange tubes.
  • the depth at which the first end of the heat exchange tube is inserted into the inner cavity of the header is 0-2 mm.
  • the header is D-shaped in cross section.
  • the heat exchanger further includes a distribution tube having a first end, a second end, a tube wall, and an inner cavity
  • the header has a first end and a second end.
  • the first end of the distribution pipe is a fluid inlet
  • the second end of the distribution pipe is closed and extends into the inner cavity of the header
  • the wall of the distribution tube has an inner cavity that communicates with the header and A through hole in the inner cavity of the distribution tube.
  • the heat exchanger further includes a support assembly including a first support, the first support having a first end and a second end, the distribution pipe having an outer peripheral surface, and A first end of the first support member is connected to the header, and a second end of the first support member is used to support an outer peripheral surface of the distribution pipe.
  • the support assembly further includes a second support member that extends from the second end of the header into the inner cavity of the header, the second support To support the distribution pipe.
  • a plurality of the through holes are provided, and the plurality of the through holes are arranged at intervals along the length direction of the distribution pipe.
  • FIG. 1 is a schematic diagram of a heat exchanger according to an embodiment of the present application.
  • Fig. 2 is a schematic cross-sectional view taken along A-A in Fig. 1 of a heat exchanger according to an embodiment of the present application.
  • Fig. 3 is a schematic cross-sectional view taken along the line B-B in Fig. 1 of a heat exchanger according to an embodiment of the present application.
  • Collecting tube 1 curved wall 11, bottom wall 12, heat exchange tube 2, first end 21 of heat exchange tube, end face 211 of first end of heat exchange tube, distribution tube 3, through hole 31, support assembly 4 , The first support member 41, the second support member 42, and the fin 5.
  • the "first" or “under” of the second feature may include the first and second features in direct contact, and may also include the first and second features. Not directly, but through another characteristic contact between them.
  • the first feature is “above”, “above”, and “above” the second feature, including that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature is higher in level than the second feature.
  • the first feature is “below”, “below”, and “below” of the second feature, including the fact that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature is less horizontal than the second feature.
  • the heat exchanger includes a header 1 and a plurality of heat exchange tubes 2.
  • the header 1 has a tube wall and an inner cavity, and the tube wall of the header 1 includes an arc.
  • Shaped wall 11 and bottom wall 12 the curved wall 11 has a first side edge and a second side edge
  • the bottom wall 12 has a first side edge and a second side edge
  • the first side edge of the curved wall 11 and the bottom wall 12 The first side edge of the arc wall 12 is connected
  • the second side edge of the arc wall 12 is connected to the second side edge of the bottom wall 12 so that the arc wall 11 and the bottom wall 12 are connected
  • the inner surface of the arc wall 11 and the bottom wall are connected.
  • the inner surface of 12 surrounds the inner cavity of the header 1.
  • the plurality of heat exchange tubes 2 are spaced apart from each other along the longitudinal direction of the header 1 (the left-right direction shown in FIG. 1).
  • the plurality of heat exchange tubes 2 are arranged at regular intervals along the length direction of the header 1, that is, the distance between adjacent heat exchange tubes 2 is equal.
  • Each heat exchange tube 2 has a first end 21 and an inner cavity.
  • the first end 21 of the heat exchange tube 2 passes through the bottom wall 12 of the header 1 and is inserted into the inner cavity of the header 1.
  • the cavity is in communication with the inner cavity of the header 1, and the distance between the first end 21 of the heat exchange tube 2 and the bottom wall 12 is 0-5 mm.
  • the distance between the first end 21 of the heat exchange tube 2 and the bottom wall 12 is 0-2 mm.
  • the distance between the first end 21 of the heat exchange tube 2 and the bottom wall 12 is the end face 211 of the first end 21 of the heat exchange tube 2 and the inner wall of the bottom wall 12 surrounding the header 1.
  • the vertical distance between the inner surfaces of the cavities that is, the depth at which the first end 21 of the heat exchange tube 2 projects into the inner cavity of the header 1 is 0-2 mm.
  • the insertion depth of the heat exchanger tube 2 into the header 1 can reduce the requirement for installation errors when the heat exchanger tube 2 is assembled on the header 1, thereby improving the yield; meanwhile, the insertion depth can improve the replacement
  • the reliability of the heat pipe 2 and the collecting pipe 1 during brazing reduces the probability of occurrence of false welding; in addition, the insertion depth does not substantially affect the flow of the fluid (such as refrigerant) in the inner cavity of the collecting pipe 1.
  • the bottom wall 12 of the header 1 has a plurality of insertion holes penetrating the bottom wall 12, and the plurality of insertion holes are spaced apart from each other along the length direction of the bottom wall 12 (left-right direction shown in FIG. 1). Insert the inner cavity of the collecting tube 1 through the insertion hole, and one heat exchange tube 2 corresponds to one insertion hole.
  • the length direction of the bottom wall 12 is the length direction of the header 1.
  • the meaning of "a plurality" is at least two, for example, two, three, etc., unless it is specifically and specifically defined otherwise.
  • the tube wall of the header 1 includes an arc-shaped wall 11 and a bottom wall 12, the arc-shaped wall 11 and the bottom wall 12 are connected to each other, and the inner surface of the arc-shaped wall 11 and the bottom wall 12
  • the inner surface of the inner tube surrounds the inner cavity of the header tube 1.
  • the depth at which the first end of the heat transfer tube 2 projects into the header tube is 0-5 mm. It is small, and the refrigerant entering the inner cavity of the header 1 from the fluid inlet can be evenly distributed to the plurality of heat exchange tubes 2, thereby improving the uniformity of the refrigerant distribution in the heat exchanger and improving the heat exchange efficiency.
  • the heat exchange tube 2 may be a flat tube, which is also called a micro-channel flat tube in the industry.
  • the flat tube is usually provided with a plurality of channels through which the refrigerant flows. Adjacent channels are isolated from each other. Multiple channels line up and affect the width of the flat tube.
  • the flat tube is flat as a whole, its length is greater than its width, and its width is greater than its thickness.
  • the length direction of the flat tube is the refrigerant flow direction determined by the channels in the flat tube.
  • the length direction of the flat tube may be a straight type, a folded line type, or a curved type.
  • the flat tube mentioned here is not limited to this type, and may be other forms. For example, adjacent channels may not be completely isolated. For another example, all the channels can be arranged in two rows as long as the width is still greater than the thickness.
  • the bottom wall 12 is substantially straight, and the arc-shaped wall 11 is curved into an arc shape so that the cross section of the header 1 is substantially D-shaped.
  • the cross-section of the arc-shaped wall 11 is semicircular, so that the header 1 is a semicircular tube.
  • the header 1 is placed horizontally and the length is greater than 250 mm, and the heat exchanger tube 2 is placed vertically.
  • the diameter of the header 1 (that is, the width of the bottom wall 12) is larger than the width of the heat exchanger tube 2 so that the heat exchanger tube 2
  • the width of the first end 21 can be completely located in the inner cavity of the header 1.
  • the left-right direction is defined as the width direction of the heat exchange tube 2.
  • the heat exchanger further includes fins 5, which are disposed between adjacent heat exchange tubes 2, thereby performing heat exchange through the fins 5 and the heat exchange tubes 2 to improve heat exchange efficiency.
  • the plurality of heat exchange tubes 2 are spaced apart from each other, the fins 5 are disposed in a gap between adjacent heat exchange tubes 2, and the fins 5 are at least partially connected to the heat exchange tubes 2.
  • the heat exchanger further includes a distribution pipe 3 having a first end (the left end of the distribution pipe 3 shown in FIG. 1) and a second end (the right end of the distribution pipe 3 shown in FIG. 1).
  • the header 1 has a first end (the left end of the header 1 shown in FIG. 1) and a second end (the right end of the header 1 shown in FIG. 1), and the first end of the distribution tube 3 is a fluid inlet
  • the second end of the distribution pipe 3 is closed and extends from the first end of the header 1 into the inner cavity of the header 1.
  • the distribution pipe 3 is located above the heat exchange pipe 2.
  • the distribution pipe 3 is spaced apart from the first end 21 of the heat exchange pipe 2 by a certain distance.
  • the distribution pipe 3 is at least partially in contact with the first end 21 of the heat exchange pipe 2.
  • the distribution pipe 3 has a pipe wall and an inner cavity, and the pipe wall of the distribution pipe 3 has a through hole 31 that communicates with the inner cavity of the header 2 and the inner cavity of the distribution pipe 3.
  • the left end of the distribution tube 3 is on the left side of the header 1
  • the right end of the distribution tube 3 extends from the left end of the header 1 into the inner cavity of the header 1, and the right end of the distribution tube 3 is closed
  • the through hole 31 penetrates the wall thickness of the tube wall of the distribution pipe 3.
  • the through hole 31 communicates with the inner cavity of the distribution pipe 3 and the inner cavity of the header 2.
  • the distribution pipe 3 is higher than the first ⁇ 21 ⁇ End 21.
  • the refrigerant flowing into the distribution pipe 3 through the first end of the distribution pipe 3 flows to the second end of the distribution pipe 3, and the refrigerant in the distribution pipe 3 flows into the header 1 through the through hole 31.
  • first and second are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
  • the length of the distribution tube 3 in the inner cavity of the header 1 is substantially the same as the length of the header 1.
  • the second end of the distribution tube 3 extends from the first end of the header 1 into the inner cavity of the header 1 and extends to the second end of the header 1 as shown in FIG. 1.
  • the right end extends from the left end of the header 1 into the inner cavity of the header 1 and extends to the right to the right end of the header 1.
  • the through hole 31 may be opened at any position of the distribution pipe 3 in the circumferential direction of the distribution pipe 3, that is, any position in the circumference of the distribution pipe 3 may be opened.
  • ⁇ ⁇ 31 ⁇ Through holes 31 on the cross section of the distribution pipe 3 having the through hole 31, a straight line defining the horizontal diameter of the distribution pipe 3 is a horizontal line, and the through hole 31 may be located above the horizontal line, and the center of the through hole 31 and The included angle ⁇ between the connection line of the center of the distribution pipe 3 and the horizontal line is 0 ° ⁇ ⁇ 180 °.
  • the through hole 31 can also be located below the horizontal line, and the connection between the center of the through hole 31 and the center of the distribution pipe 3 and the horizontal line The included angle ⁇ is 0 ° ⁇ ⁇ 180 °.
  • the plurality of through holes 31 are arranged at intervals along the length direction of the distribution pipe 3 (the left-right direction shown in FIG. 1). It can be understood that, by setting a plurality of through holes 31 on the pipe wall of the distribution pipe 3 spaced apart from each other along the length direction of the distribution pipe 3, the refrigerant in the distribution pipe 3 can flow into the inner cavity of the header 1 uniformly. .
  • the plurality of through holes 31 are first through holes in the direction from the first end of the distribution pipe 3 to the second end of the distribution pipe 3 (the direction from left to right shown in FIG. 1). Hole, second through hole, third through hole, ... n-1th through hole and nth through hole, wherein the distance between the i + 1th through hole and the ith through hole is:
  • the first through hole is a through hole 31 on the distribution pipe 3 that is closest to the fluid inlet. As shown in FIG. 1, the first through hole is the leftmost through hole 31.
  • the plurality of heat exchange tubes 2 are sequentially changed in the direction from the first end of the distribution tube 3 to the second end of the distribution tube 3 (the direction from left to right shown in FIG. 1).
  • the heat pipe, the second heat exchange pipe, the third heat exchange pipe, the fourth heat exchange pipe ..., the first through hole is located between the third heat exchange pipe and the fourth heat exchange pipe.
  • the first heat exchange tube is a heat exchange tube 2 closest to the fluid inlet.
  • the first heat exchange tube is the leftmost heat exchange tube 2, in other words, a through hole closest to the fluid inlet. 31 is opened between the third heat exchange tube and the fourth heat exchange tube.
  • the plurality of through holes 31 on the pipe wall of the distribution pipe 3 are divided into a part of the through hole and another part of the through hole, and a part of the through hole is located at the first end of the header 1 (FIG. 1 The left end of the header 1 shown) to the middle position of the header 1 in the length direction, and the part of the through holes are arranged at regular intervals along the length direction of the distribution tube 3 (left-right direction shown in FIG. 1). The other part of the through hole is located between the middle position of the header 1 in the length direction and the second end of the header 1 (the right end of the header 1 shown in FIG.
  • the distance between the +1 via and the i-th via is:
  • ⁇ 2-10.
  • ⁇ 2.5
  • the through-hole 31 is a round hole.
  • d i D 0 +2
  • D 0 is the diameter of the through-hole 31. Specifically, 1 mm ⁇ D 0 ⁇ 3 mm.
  • the middle position of the header 1 in the length direction is a half of the length of the header 1, as shown in the position B-B shown in FIG. 1.
  • the heat exchanger further includes a support assembly 4 including a first support 41 having a first end (the first shown in FIG. 3 The lower end of the support member 41) and the second end (the upper end of the first support member 41 shown in FIG. 3).
  • the distribution pipe 3 has an outer peripheral surface.
  • the first end of the first support member 41 is connected to the header 1.
  • the second end of the support 41 is located below the distribution pipe 3 and is in contact with the outer peripheral surface of the distribution pipe 3. Thereby, the distribution pipe 3 is supported by the first support 41. It can be understood that the arrangement form of the first support member 41 is not limited to this.
  • the second end of the first support member 41 may also be located below the distribution pipe 3 and connected to the distribution pipe 3 Connected.
  • the first support member 41 may be located above the distribution pipe 3, and an upper end of the first support member 41 is connected to the header 1 and a lower end of the first support member 41 is connected to the distribution pipe 1. .
  • first support members 41 there are a plurality of first support members 41, and the plurality of first support members 41 are arranged at a distance from each other along the length direction of the header 1 (the left-right direction shown in FIG. 1), thereby passing the plurality of first support members 41.
  • Common support distribution pipe 3. It can be understood that the present application is not limited to this. There may also be only one first support member 41, and one first support member 41 is located at a middle position of the header 1 in the length direction.
  • the first end of the first support member 41 (the lower end of the first support member 41 shown in FIG. 3) is connected to the bottom wall 11 of the header 1, and the second end of the first support member 41
  • the end (the upper end of the first support 41 shown in FIG. 3) extends from the bottom wall 11 of the header 1 into the inner cavity of the header 1, and the second end of the first support 41 and the outer periphery of the distribution tube 3 Face to face.
  • the first support 41 includes a first section and a second section which are sequentially arranged from top to bottom and are connected to each other, wherein the first section is within the header 1 and the outer periphery of the distribution tube 3. The surfaces are in contact with each other, and the second section is attached to the outer wall surface of the bottom wall 11 of the header 1.
  • the support assembly 4 further includes a second support 42 that extends from the second end of the header 1 (the right end of the header 1 shown in FIG. 1) into the header 1.
  • the second support 42 is located below the distribution pipe 3 and is in contact with the outer peripheral surface of the distribution pipe 3. It can be understood that the arrangement form of the second support member 42 is not limited to this.
  • the second support member 42 is located below the distribution pipe and connected to the outer peripheral surface of the distribution pipe 3.
  • the second support member 42 is located above the distribution pipe 3 and is connected to the outer peripheral surface of the distribution pipe 3. It can be understood that the present application is not limited thereto.
  • the support assembly 4 may not be provided with the second support 42.
  • the distribution pipe 3 can be better supported and positioned, so that the distribution pipe 3 is more fixed, and it is not easy to manufacture and assemble. Shift in the process.
  • the heat exchanger includes a header 1, a plurality of heat exchange tubes 2, a distribution tube 3, a support assembly 4, and a fin 5.
  • the header 1 is placed horizontally, that is, it extends in the left-right direction and has a length greater than 250 mm.
  • the tube wall of the header 1 includes an arc-shaped wall 11 and a bottom wall 12 connected to each other.
  • the bottom wall 12 is generally straight, and the arc-shaped wall 11 is curved and
  • the cross section is semicircular, so that the header 1 is a semicircular tube.
  • the bottom wall 12 of the header 1 has a plurality of insertion holes penetrating the bottom wall 12 along the thickness direction of the bottom wall 12, that is, the up-down direction, and the plurality of insertion holes are spaced apart from each other along the length direction of the bottom wall 12, and are adjacent The distances between the jacks are equal.
  • the heat exchange tube 2 is a flat tube.
  • the heat exchange tube 2 has a plurality.
  • the plurality of heat exchange tubes 2 are sequentially arranged and spaced apart from each other along the length of the header 1. The distance between adjacent heat exchange tubes 2 is equal.
  • the first end 21 (the upper end shown in FIG. 1) of each of the heat exchange tubes 2 passes from the bottom to the insertion hole of the bottom wall 12 of the header 1 into the inner cavity of the header 1 and the inner cavity of the heat exchanger 2. It is in communication with the inner cavity of the collecting tube 1.
  • One heat-exchanging tube 2 corresponds to one socket.
  • the distance between the end surface 211 of the first end 21 of the heat-exchanging tube 2 and the upper surface of the bottom wall 12 is 0-2 mm.
  • the depth of the first end 21 of the heat pipe 2 protruding into the inner cavity of the header 1 is 0-2 mm. Please refer to FIG. 2.
  • the arc-shaped wall 11 is directly opposite the first end 21 of the heat exchange tube 2 so as to better guide the fluid to the heat exchange.
  • the first end 21 of the tube 2 is beneficial to improve the uniformity of the fluid distribution in the header 1.
  • the fins 5 are disposed in a gap between adjacent heat exchange tubes 2, and the fins 5 are connected at least partially to the heat exchange tubes 2 to improve heat exchange efficiency.
  • the left end of the distribution pipe 3 is a fluid inlet, so that the refrigerant flows into the distribution pipe 3, the right end of the distribution pipe 3 extends into the header 1, the right end of the distribution pipe 3 extends to the right end of the manifold 1, and the right end of the distribution pipe 3 Closed, the pipe wall of the distribution pipe 3 has a through hole 31 penetrating the pipe wall of the distribution pipe 3, the through hole 31 is a circular hole, and the diameter of the through hole 31 is D0 is 1mm ⁇ D0 ⁇ 3mm.
  • the internal cavity of the piping 3 and the internal cavity of the header 2, that is, the refrigerant in the internal cavity of the distribution tube 3 can enter the internal cavity of the header 1 through the through hole 31 and further enter each of the heat exchange tubes 2.
  • the outer peripheral surface of the distribution tube 3 and the end surface of the first end of the heat exchange tube 2 are spaced apart in the vertical direction.
  • the through hole 31 can be opened at any position along the circumferential direction of the distribution pipe 3 of the distribution pipe 3. In other words, the through hole 31 can be opened at any position that makes one turn in the circumferential direction of the distribution pipe 3.
  • the distribution pipe 3 has a plurality of through holes 31, and the plurality of through holes 31 are evenly spaced in the left and right directions and are adjacent to each other.
  • L 0 is the distance between the adjacent heat exchange tubes 2.
  • the distribution pipe 3 has a plurality of through holes 31, and the plurality of through holes 31 are oriented from the middle position of the header 1
  • the direction of the second end of the header 1 is a first through hole, a second through hole, a third through hole, ... an n-1 through hole and an n through hole, among which the i + 1 through hole and the i through hole
  • the distance between the vias is:
  • the support assembly 4 includes a first support member 41 and a second support member 42.
  • a lower end of the first support member 41 is connected to the bottom wall 11 of the header 1, and an upper end of the first support member 41 is connected to the bottom wall 11 of the header 1. It extends into the inner cavity of the header 1 and the upper end of the first support 41 is in contact with the outer peripheral surface of the distribution tube 3.
  • the first support 41 is located at the middle position of the header 1 in the length direction so that the header 1
  • the distribution tube 3 is supported at a middle position along the length direction.
  • the second support member 42 extends from the right end of the header 1 into the header 1, and the upper surface of the second support member 42 is in contact with the outer peripheral surface of the distribution tube 3.
  • the distribution pipe 3 is supported at the right end of the distribution pipe 3.

Abstract

La présente invention concerne un échangeur de chaleur comprenant un collecteur. Le collecteur présente une paroi de tube et une cavité interne ; la paroi de tube du collecteur comprend une paroi arquée et une paroi inférieure, la paroi arquée présentant un premier bord latéral et un second bord latéral et la paroi inférieure présentant un premier bord latéral et un second bord latéral ; le premier bord latéral de la paroi arquée est raccordé au premier bord latéral de la paroi inférieure et le second bord latéral de la paroi arquée est raccordé au second bord latéral de la paroi inférieure ; une pluralité de tubes d'échange de chaleur est disposée et agencée le long de la direction de la longueur du collecteur ; chacun des tubes d'échange de chaleur présente une première extrémité et une cavité interne ; la première extrémité des tubes d'échange de chaleur pénètre dans la paroi inférieure et est insérée dans la cavité interne du collecteur ; la cavité interne des tubes d'échange de chaleur est en communication avec la cavité interne du collecteur ; et la distance entre la première extrémité des tubes d'échange de chaleur et la paroi inférieure est de 0 à 5 mm. L'échangeur de chaleur selon la présente invention peut améliorer l'uniformité de réfrigérants distribués dans l'échangeur de chaleur.
PCT/CN2019/109087 2018-09-30 2019-09-29 Échangeur de chaleur WO2020063972A1 (fr)

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