CN102654372A - Pyramid-shaped finned condensing tube - Google Patents

Pyramid-shaped finned condensing tube Download PDF

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Publication number
CN102654372A
CN102654372A CN2012101679237A CN201210167923A CN102654372A CN 102654372 A CN102654372 A CN 102654372A CN 2012101679237 A CN2012101679237 A CN 2012101679237A CN 201210167923 A CN201210167923 A CN 201210167923A CN 102654372 A CN102654372 A CN 102654372A
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CN
China
Prior art keywords
fin
pyramid
fins
condenser pipe
tube
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Granted
Application number
CN2012101679237A
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Chinese (zh)
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CN102654372B (en
Inventor
王进强
陈焕焯
武震国
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SUZHOU XINTAITONG EFFICIENT TUBE CO Ltd
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SUZHOU XINTAITONG EFFICIENT TUBE CO Ltd
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Priority to CN201210167923.7A priority Critical patent/CN102654372B/en
Publication of CN102654372A publication Critical patent/CN102654372A/en
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Publication of CN102654372B publication Critical patent/CN102654372B/en
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    • 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
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F28F1/422—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element with outside means integral with the tubular element and inside means integral with the tubular element
    • 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
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/26—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being integral with the element
    • 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
    • F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention discloses a pyramid-shaped finned condensing tube, comprising a tube body with an inner cavity, wherein a plurality of independent fins are arranged on the outer surface of the tube body; and the pyramid-shaped finned condensing tube is characterized in that the fins are peripherally twisted around the central axis in a height direction to be pyramid-shaped, and the plurality of fins are regularly arrayed along the axis of the tube body. The asymmetric finned condensing tube disclosed by the invention solves the shortages of the conventional condensing tube, and can drain liquid fast from a condensing heat exchange tube and effectively enlarges a heat exchange area, thus achieving a beneficial effect of high heat exchange efficiency.

Description

A kind of pyramid fin condenser pipe
Technical field
the present invention relates to a kind of condensing heat-exchanging pipe, especially a kind of pyramid fin condenser pipe.
Background technology
condenser is the visual plant in many industrial processes, for example, and the condenser in the central air conditioner system handpiece Water Chilling Units.The quality of condenser performance depends on the exchange performance quality to a great extent.
in general, the operation principle of shell-and-tube condensing heat exchanger is: the cryogen that flows in the pipe, and the steam in the pipe outside is with after tube wall contacts; Undergo phase transition; Form coagulating liq, discharge latent heat simultaneously, carry out heat exchange with the cryogen in the pipe.Under the usual conditions, condensed fluid continuous-flow, the outer surface of covering heat exchanger tube constitutes liquid film.Owing to have liquid film between the wall of condenser pipe and the steam, so steam carries out condensation at the liquid film outer surface, the latent heat that is discharged must just can be passed to the cryogen in tube wall and the pipe through liquid film, and liquid film is thick more, and thermal resistance is big more, and the condensation heat transfer effect is poor more.A kind of approach that improves condensing heat-exchange is discharge opeing as early as possible, the reducer film thickness.In addition, through fin being set,, and then improve heat exchange efficiency with the increase heat exchange area on the heat exchanger tube surface.At present, the surface of many condensing heat-exchanging pipes has fin, though increased heat exchange area; But, because mostly fin is radial fins, when heat exchanger tube vertically uses; Promptly; When axis direction was parallel with gravity direction, fin bearing of trend and axis normal had influenced the even distribution with liquid of flowing downward of condensed fluid.For this reason; Some finned tube is provided with machining gap above that, further increases heat exchange area on the one hand, causes axial flow channel in addition; But because method for processing is on radial fins, to cut out breach; So that the axial flow of condensate liquid, but often breach can not arrive the fin root, therefore acts on limited.As, the notch depth of general processing has only about 50% of fin height.
well-known enhanced heat exchange principle is the fin that produces 3 dimensional coil geometry, to increase the perturbation action of fin convection cell, destroys the boundary layer of flowing, and reduces thermal resistance.For the thickness of liquid film on the attenuate fin; Accelerate condensate flow speed; The fin of special condensing heat-exchange tube-surface sets out local flexure plane, utilizes the meniscus between liquid and the steam to descend the capillary pressure differential liquid flow between generation and the external pressure, discharges condensate liquid faster.But the processing method of condensing fin pipe is to process continuous helical fin vertically mostly at present, forms product through cutting out breach above that then, and the fin shape that is produced is simple, the fin surface smooth.
Summary of the invention
the present invention seeks to: a kind of faster discharge opeing from the condensing heat-exchanging pipe is provided, has novel fin structure, increase heat exchange area, consequently the pyramid fin condenser pipe of better heat exchange efficiency.
technical scheme of the present invention is: a kind of pyramid fin condenser pipe; Comprise body with inner chamber; The outer surface of said body has several independently fins; It is characterized in that: said fin circumferentially twists around the central shaft of short transverse, is pyramid shaped, and a plurality of fins are regularly arranged along the body axis.
are further, and said fin outer surface is made up of 4 non-equal triangular surface, the bottom of said fin be projected as right-angled trapezium.
are further, and the fin of said pyramid is 0.5 ~ 2.5mm from the bottom surface to the height at pyramid top; Said four triangle outer surfaces are 10 ~ 70 degree around the maximum circumferentially windup-degree of central shaft.
are further, and said pyramid fin evenly distributes on the heat exchanger tube surface, and adjacent fins bottom axial distance is 0.3 ~ 1.5mm, and circumferentially distance from bottom is 0.1 ~ 0.6mm; Have 7000 ~ 150000 fins on every meter length of said body.
are further, it is characterized in that said inboard wall of tube body face is provided with the multi-head spiral conduit, and the number of said spiral channel is 30 ~ 80, and its degree of depth is 0.15 ~ 0.35mm, and width is 0.2 ~ 0.4mm.
are further, and said inboard wall of tube body face is provided with the helical form arc-shaped protrusions that forms through at the rolling single head spiral channel of outer surface of tube body, and the height of said arc-shaped protrusions is 0.2 ~ 0.4mm, and the pitch of arc-shaped protrusions is 10 ~ 30mm.
Operation principle of the present invention:
novel fin of the present invention has four triangle outer surfaces and pinnacle for distortion rectangular pyramid shape.According to mathematical principle, under the same volume conditions, the area of polygon outer surface is greater than cylindrical outer surface, and the pyramid fin has increased the contact area with steam, can improve the heat exchange effect.Four triangle outer surfaces of the pyramid fin among the present invention are not exclusively equal, and the perspective plane is a right-angled trapezium, has increased the asymmetry of fin; Simultaneously the pyramid fin is reversed, make the surface of smooth produce bending, constitute concavo-convex; Meniscus appears in the liquid of recess and steam contact interface, has strengthened capillary force, has quickened flowing of fin surface liquid; Reach the effect of reducer film thickness, and then reach the effect that increases condensing heat-exchange.Distortion pyramid fin is isolated fin, is the parent tube surface between each fin, forms unobstructed passage between the fin, makes things convenient for the circumferential and axial of condensate liquid to flow, and has accelerated the flowing velocity of liquid, also makes the liquid film on the heat exchanger tube be evenly distributed simultaneously.The pyramid top is a needle-like, has quickened the discharge of condensing heat-exchanging pipe bottom condensate liquid.Spiral channel on the heat exchanger tube internal face or the spirality arc-shaped protrusions that processes on the inside pipe wall face can be destroyed flow boundary layer in the pipe, have lowered the thermal resistance of intraductal heat exchange, and then improve the intraductal heat exchange coefficient.
Advantage of the present invention is:
The asymmetric fin condenser pipe of the present invention has solved the deficiency of conventional condenser pipe, can effectively increase heat exchange area, thereby reach the beneficial effect of better heat exchange efficiency from faster discharge opeing on the condensing heat-exchanging pipe.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Fig. 1 is the cross sectional representation of the embodiment of the invention 1;
Fig. 2 is the structural representation of the embodiment of the invention 1;
Fig. 3 is the part sectioned view of the embodiment of the invention 1;
Fig. 4 is the cross sectional representation of the embodiment of the invention 2;
Fig. 5 is the structural representation of the embodiment of the invention 2;
Fig. 6 is the part sectioned view of the embodiment of the invention 2.
wherein: 1, body, 2, fin, 3, spiral channel, 4, arc-shaped protrusions.
The specific embodiment
further specify such scheme below in conjunction with specific embodiment.Should be understood that these embodiment are used to the present invention is described and are not limited to limit scope of the present invention.The implementation condition that adopts among the embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in the normal experiment.
Embodiment 1:
are like Fig. 1 ~ a kind of condensing heat-exchanging pipe that has the pyramid fin shown in Figure 3, shown.Its two ends are the light section, and its effect is after heat exchanger tube passes the both sides end plate of shell and tube exchanger, can be closely fixing with end plate, and its length equates with end plate thickness.Heat exchanger tube light section diameter is 19mm.Pyramid fin 2 highly is 1.7mm, crosses pyramid height center, and the vertical plane that is parallel to the fin 2 bottom right angle trapezoidal right angle length of sides counterclockwise reverses 20 degree.Have 37000 fins on every mitron is long.Outer surface rolls out single head spirality conduit so that cause the arc-shaped protrusions 4 on the heat exchanger tube body internal face.The arc-shaped protrusions 4 of heat exchanger tube inner surface is that 0.35mm is high, and pitch is 18mm, equates with outer conduit pitch.
Embodiment 2:
like Fig. 4 ~ Fig. 5, shown a kind of condensing heat-exchanging pipe that has the pyramid fin.The heat exchanger tube inner surface is provided with 60 spiral channels 3, groove depth 0.15mm.The structure of pyramid fin and physical dimension on the heat exchange pipe external surface, and the fin number is with embodiment 1.
above to be shown and has described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; The present invention also has various changes and modifications under the prerequisite that does not break away from spirit and scope of the invention, and these variations and improvement all fall in the scope of the invention that requires protection.

Claims (6)

1. pyramid fin condenser pipe; Comprise the body with inner chamber, the outer surface of said body has several independently fins, it is characterized in that: said fin circumferentially twists around the central shaft of short transverse; Be pyramid shaped, a plurality of fins are regularly arranged along the body axis.
2. according to the said pyramid fin of claim 1 condenser pipe, it is characterized in that said fin outer surface is made up of 4 non-equal triangular surface, the bottom of said fin be projected as right-angled trapezium.
3. according to the said pyramid fin of claim 2 condenser pipe, it is characterized in that the fin of said pyramid is 0.5 ~ 2.5mm from the bottom surface to the height at pyramid top; Said four triangle outer surfaces are 10 ~ 70 degree around the maximum circumferentially windup-degree of central shaft.
4. according to the said pyramid fin of claim 3 condenser pipe, it is characterized in that said pyramid fin evenly distributes on the heat exchanger tube surface, adjacent fins bottom axial distance is 0.3 ~ 1.5mm, and circumferentially distance from bottom is 0.1 ~ 0.6mm; Have 7000 ~ 150000 fins on every meter length of said body.
5. pyramid fin condenser pipe according to claim 1 is characterized in that said inboard wall of tube body face is provided with the multi-head spiral conduit, and the number of said spiral channel is 30 ~ 80, and its degree of depth is 0.15 ~ 0.35mm, and width is 0.2 ~ 0.4mm.
6. pyramid fin condenser pipe according to claim 1; It is characterized in that; Said inboard wall of tube body face is provided with the helical form arc-shaped protrusions that forms through at the rolling single head spiral channel of outer surface of tube body; The height of said arc-shaped protrusions is 0.2 ~ 0.4mm, and the pitch of arc-shaped protrusions is 10 ~ 30mm.
CN201210167923.7A 2012-05-28 2012-05-28 Pyramid-shaped finned condensing tube Active CN102654372B (en)

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Application Number Priority Date Filing Date Title
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CN102654372B CN102654372B (en) 2014-01-15

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109269337A (en) * 2018-11-12 2019-01-25 烟台恒辉铜业有限公司 A kind of flooded evaporator heat exchanger tube
CN111854503A (en) * 2020-07-13 2020-10-30 珠海格力电器股份有限公司 Condenser pipe, condenser and air conditioning system
CN113363626A (en) * 2021-05-19 2021-09-07 广东省科学院半导体研究所 Battery and battery phase change heat management system and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11270980A (en) * 1998-03-23 1999-10-05 Furukawa Electric Co Ltd:The Heat transfer pipe for evaporator
WO2003104736A1 (en) * 2002-06-10 2003-12-18 Wolverine Tube, Inc. Heat transfer tube and method of and tool for manufacturing the same
CN202614060U (en) * 2012-05-28 2012-12-19 苏州新太铜高效管有限公司 Condenser pipe with pyramidal fins

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11270980A (en) * 1998-03-23 1999-10-05 Furukawa Electric Co Ltd:The Heat transfer pipe for evaporator
WO2003104736A1 (en) * 2002-06-10 2003-12-18 Wolverine Tube, Inc. Heat transfer tube and method of and tool for manufacturing the same
CN202614060U (en) * 2012-05-28 2012-12-19 苏州新太铜高效管有限公司 Condenser pipe with pyramidal fins

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109269337A (en) * 2018-11-12 2019-01-25 烟台恒辉铜业有限公司 A kind of flooded evaporator heat exchanger tube
CN109269337B (en) * 2018-11-12 2024-01-26 山东恒辉节能技术集团有限公司 Heat exchange tube for flooded evaporator
CN111854503A (en) * 2020-07-13 2020-10-30 珠海格力电器股份有限公司 Condenser pipe, condenser and air conditioning system
CN113363626A (en) * 2021-05-19 2021-09-07 广东省科学院半导体研究所 Battery and battery phase change heat management system and method
CN113363626B (en) * 2021-05-19 2023-03-10 广东省科学院半导体研究所 Battery and battery phase change heat management system and method

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