CN202614060U - Condenser pipe with pyramidal fins - Google Patents
Condenser pipe with pyramidal fins Download PDFInfo
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- CN202614060U CN202614060U CN 201220242310 CN201220242310U CN202614060U CN 202614060 U CN202614060 U CN 202614060U CN 201220242310 CN201220242310 CN 201220242310 CN 201220242310 U CN201220242310 U CN 201220242310U CN 202614060 U CN202614060 U CN 202614060U
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- fin
- pyramid
- fins
- condenser pipe
- pipe
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Abstract
A condenser pipe with pyramidal fins includes a pipe body with an inner chamber, wherein the independent fins are arranged on the outer surface of the pipe body. The condenser pipe with the pyramidal fins is characterized in that each fin is twisted circumferentially around the central axis in the height direction, so as to form a pyramidal structure; and the fins are regularly arranged along the axis of the pipe body. The condenser pipe with the asymmetric fins overcomes the defects of ordinary condenser pipes; and liquid can be discharged from the condenser heat exchange pipe more quickly, and the head exchange area is effectively increased, so that the benefit of higher heat exchange efficiency is achieved.
Description
Technical field
the utility model 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.
The utility model content
the utility model purpose is: 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.
The technical scheme of
the utility model 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.
The operation principle of the utility model:
The novel fin of
the utility model 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 in the utility model 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.
The utility model has the advantages that:
The asymmetric fin condenser pipe of
the utility model 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 utility model is further described:
Fig. 1 is the cross sectional representation of the utility model embodiment 1;
Fig. 2 is the structural representation of the utility model embodiment 1;
Fig. 3 is the part sectioned view of the utility model embodiment 1;
Fig. 4 is the cross sectional representation of the utility model embodiment 2;
Fig. 5 is the structural representation of the utility model embodiment 2;
Fig. 6 is the part sectioned view of the utility model embodiment 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 utility model is described and the scope that is not limited to limit the utility model.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 advantage that shows and described basic principle, principal character and the utility model of the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; The utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these variations and improvement all fall in the utility model scope 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220242310 CN202614060U (en) | 2012-05-28 | 2012-05-28 | Condenser pipe with pyramidal fins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220242310 CN202614060U (en) | 2012-05-28 | 2012-05-28 | Condenser pipe with pyramidal fins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202614060U true CN202614060U (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220242310 Withdrawn - After Issue CN202614060U (en) | 2012-05-28 | 2012-05-28 | Condenser pipe with pyramidal fins |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202614060U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654372A (en) * | 2012-05-28 | 2012-09-05 | 苏州新太铜高效管有限公司 | Pyramid-shaped finned condensing tube |
| CN103440886A (en) * | 2013-08-20 | 2013-12-11 | 上海核工程研究设计院 | Device for increasing critical heat flux density of outer wall surface of pressure vessel |
| CN104457371A (en) * | 2014-11-24 | 2015-03-25 | 无锡鸿声铝业有限公司 | Aluminium finned tube |
| CN105387758A (en) * | 2015-12-24 | 2016-03-09 | 东南大学 | Vertical condenser pipe provided with spiral thin fins |
| CN107149789A (en) * | 2017-06-16 | 2017-09-12 | 镇江市长江机电设备厂有限公司 | A kind of vacuum oil purifier condenser |
| CN108253834A (en) * | 2016-12-28 | 2018-07-06 | 丹佛斯微通道换热器（嘉兴）有限公司 | Flat tube for heat exchanger and the heat exchanger with the flat tube |
-
2012
- 2012-05-28 CN CN 201220242310 patent/CN202614060U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654372A (en) * | 2012-05-28 | 2012-09-05 | 苏州新太铜高效管有限公司 | Pyramid-shaped finned condensing tube |
| CN102654372B (en) * | 2012-05-28 | 2014-01-15 | 苏州新太铜高效管有限公司 | Pyramid-shaped finned condensing tube |
| CN103440886A (en) * | 2013-08-20 | 2013-12-11 | 上海核工程研究设计院 | Device for increasing critical heat flux density of outer wall surface of pressure vessel |
| CN103440886B (en) * | 2013-08-20 | 2016-06-22 | 上海核工程研究设计院 | Improve the device of pressure vessel outside wall surface critical heat flux density |
| CN104457371A (en) * | 2014-11-24 | 2015-03-25 | 无锡鸿声铝业有限公司 | Aluminium finned tube |
| CN105387758A (en) * | 2015-12-24 | 2016-03-09 | 东南大学 | Vertical condenser pipe provided with spiral thin fins |
| CN108253834A (en) * | 2016-12-28 | 2018-07-06 | 丹佛斯微通道换热器（嘉兴）有限公司 | Flat tube for heat exchanger and the heat exchanger with the flat tube |
| CN107149789A (en) * | 2017-06-16 | 2017-09-12 | 镇江市长江机电设备厂有限公司 | A kind of vacuum oil purifier condenser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121219 Effective date of abandoning: 20140115 |
|
| RGAV | Abandon patent right to avoid regrant |