CN205090836U - Double pipe heat exchanger with reinforce heat -transfer surface - Google Patents
Double pipe heat exchanger with reinforce heat -transfer surface Download PDFInfo
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- CN205090836U CN205090836U CN201520804641.2U CN201520804641U CN205090836U CN 205090836 U CN205090836 U CN 205090836U CN 201520804641 U CN201520804641 U CN 201520804641U CN 205090836 U CN205090836 U CN 205090836U
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- heat exchanger
- outer tube
- heat exchange
- pipe
- double pipe
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Abstract
The utility model discloses a double pipe heat exchanger with reinforce heat -transfer surface, it includes the inner tube and establishes the outer tube of outside of tubes in this with the axle sleeve, leave cyclic annular cavity between outer tube and the inner tube, the surface of inner tube is provided with the pyramid fin of a plurality of upper portion distortion, the internal surface of outer tube is provided with a plurality of axial interval distribution's annular bead. The utility model discloses further promote double -pipe heat exchanger's performance, reinforceed double -pipe heat exchanger's heat transfer ability.
Description
Technical field
The utility model relates to technical field of heat exchangers, is specifically related to a kind of double pipe heat exchanger with enhanced heat exchange face.
Background technology
Double pipe heat exchanger is a kind of common Mini-type heat exchanger, the condenser of Chang Zuowei small refrigeration systems.Conventional double pipe condenser is made up of inner and outer tubes, interior pipe is placed within outer tube, interior pipe and outer tube are all light pipe, interior pipe passes through cold water, annulus between two pipes passes through refrigerant vapour, the cooling water that the heat of annular channel inner refrigerant steam is passed through by inner pipe wall and interior pipe carries out heat exchange, produces phase transformation.Double pipe heat exchanger structure is simple, and easy to process, conveniently increase and decrease heat exchange area, volume is little, and the scope of application is extensive.Interior tube-surface is the main heat-transfer surface of heat exchange between cooling water and hot fluid, but heat exchange surface is light face, then heat exchange area is limited, and vapor stream by annular cross section between two pipes time, without any the means of enhanced heat exchange, the coefficient of heat transfer is low, have impact on the heat exchange efficiency of double-tube heat exchanger.For this reason, there has been proposed multiple corrective measure, Chinese patent: in 200910217315.0 double pipe heat exchangers proposed, interior tube body section is for having the multi-start helical tubes of many parallel spiral groove structures.This kind of heat exchanger improves pipe and annulus inner fluid flow regime in double-tube heat exchanger, adds heat transfer property, but the heat exchange area of inner tube outer surface increases limited; Chinese patent: CN201220096931.2, the double-tube heat exchanger feature of proposition is outer tube is light pipe, and interior pipe is double wall, and in double wall, pipe is multi-start helical tubes.
Utility model content
The utility model object is: in order to the performance of further lift lug heat exchange of heat pipe, proposes a kind of double pipe heat exchanger with enhanced heat exchange face.
The technical solution of the utility model is: a kind of double pipe heat exchanger with enhanced heat exchange face, comprise interior pipe and coaxial sleeve and be located at outer tube outside this interior pipe, ring cavity is left between described outer tube and interior pipe, the outer surface of described interior pipe is provided with the pyramid fin of several top distortions, and the inner surface of described outer tube is provided with the annular ridge of several axially spaced-aparts distribution.
The utility model, on the basis of technique scheme, also comprises following preferred version:
Described outer tube outer surface is provided with the band groove of the annular being in described annular ridge periphery.
The height of described pyramid fin is 0.8 ~ 2.2mm, the described interior pipe of each meter long is provided with altogether 7000 ~ 15000 described pyramid fins.
Described annular ridge is uniformly distributed described outer pipe internal surface is equidistant, and annular ridge is arranged perpendicular to the axial line of outer tube.
The axial width of described annular ridge is 3 ~ 7mm, and radial width is 0.4 ~ 0.7mm, and the distance between adjacent two annular ridges is 10 ~ 16mm.
The inner surface of described interior pipe is also provided with some conduits.
The utility model has the advantages that: compared to traditional double pipe heat exchanger, in the utility model double-tube heat exchanger, pipe adds heat exchange area, the annular ridge that outer tube is arranged simultaneously serves the perturbation action to annular channel inner fluid, both combinations, enhance the exchange capability of heat of double-tube heat exchanger greatly.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment middle sleeve formula heat exchanger;
Wherein: 1-tabular end socket, the import of 2-refrigerant vapour, 3-condensation of refrigerant liquid exports, 4-cooling water inlet, 5-coolant outlet, 6-conduit, 7-pyramid fin, pipe in 8-, 9-outer tube, 10-annular ridge, 11-band groove.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the utility model further, these embodiments should be understood and be only not used in restriction scope of the present utility model for illustration of the utility model, after having read the utility model, the amendment of those skilled in the art to the various equivalent form of value of the present utility model has all fallen within the application's claims limited range.
Fig. 1 shows a specific embodiment of this double pipe heat exchanger of the utility model, identical with conventional sleeve pipe heat exchanger is, it also comprises the less interior pipe 8 of diameter and the larger outer tube 9 of diameter, outer tube 9 is enclosed within that interior pipe 8 is outer and the two is coaxially arranged, leaves ring cavity between outer tube 9 and interior pipe 8.The two ends distribution of outer tube 9 is provided with refrigerant vapour import 2 and condensation of refrigerant liquid outlet 3, and the two ends distribution of interior pipe 8 is provided with cooling water inlet 4 and coolant outlet 5.Heat exchanger end is welded with outer tube by tabular end socket 1, reaches sealing purpose; Interior pipe stretches out tabular end socket 1 and welds with tabular end socket 1, and interior pipe is connected with the adapter as cooling water outlet and inlet.
The key improvements of the present embodiment is: the outer surface of described interior pipe 8 is provided with the pyramid fin 7 of many tops distortion, the inner surface of described outer tube 9 is provided with many annular ridges 10, these annular ridges 10 are along the axial uniform intervals distribution of outer tube 9, and annular ridge is arranged perpendicular to the axial line of outer tube 9.
And described outer tube 9 outer surface is provided with the band groove 11 of the annular being in described annular ridge 10 periphery, annular ridge 10 one_to_one corresponding that each band groove 11 of outer surface is corresponding to inner surface, forms the structure of outer recessed convex, as Fig. 1.Design like this is the shaping of conveniently described annular ridge 10.
The height of described pyramid fin 7 is generally 0.8 ~ 2.2mm, and this example is specially 1.3mm.The interior pipe 8 of each meter long generally arranges 7000 ~ 15000 (this example is 10000) pyramid fins 7 altogether.
In this example, each annular ridge 10 is uniformly distributed outer tube 9 inner surface is equidistant, the axial width of annular ridge 10 is generally 3 ~ 7mm (this example is specially 5mm), radial width is generally 0.4 ~ 0.7mm (this example is specially 0.4mm), and the distance between adjacent two annular ridges 10 is 10 ~ 16mm (this example is specially 15mm).
In addition, this example is also provided with many conduits 6 at the inner surface of described interior pipe 8.
Compared to traditional double pipe heat exchanger, the performance of the further lift lug heat exchange of heat pipe of the present embodiment, enhance the exchange capability of heat of double-tube heat exchanger, its operation principle is as follows:
The fin of inner tube outer surface adds the heat transfer effect outside pipe, especially when using as condenser, the heat-transfer character of general cold-producing medium is far below the heat-transfer character of water, therefore the thermal resistance of both sides, inner tubal wall face is not mated, thermal resistance mainly concentrates on cold-producing medium side, and the key improving heat exchange property reduces the heat exchange thermal resistance of cold-producing medium, and this side heat exchange surface arranges fin, increase heat exchange area, just can reduce the heat exchange thermal resistance of cold-producing medium side.In addition on the one hand, inner tube wall face arranges many conduits, can change the flow field of pipe inner cooling water, plays the effect destroying flow boundary layer, improves pipe inner cooling water heat transfer effect.Because inner tube outer surface has intensive pyramid fin, increase the fluid friction resistance of near wall, when refrigerant vapour flows through annular channel, easily flow through from the gap of fin and outer tube, have impact on the condensing heat-exchange effect of steam in annular channel.So wall arranges annular ridge within the outer tube, and vertical axial, namely vertical with fluid flow direction.According to Hydrodynamics Theory, when refrigerant vapour flows through projection, can produce longitudinal Vortex thereafter, vortex can thinning boundary layer thickness, strengthens heat exchange.Also serve simultaneously and reduce fluid from the leakage current in gap between fin and outer tube, make more fluid flow through fin.
Claims (6)
1. one kind has the double pipe heat exchanger in enhanced heat exchange face, comprise interior pipe (8) and coaxial sleeve and be located at outer tube (9) outside this interior pipe, ring cavity is left between described outer tube (9) and interior pipe (8), it is characterized in that: the outer surface of described interior pipe (8) is provided with the pyramid fin (7) of several top distortions, the inner surface of described outer tube (9) is provided with the annular ridge (10) of several axially spaced-aparts distribution.
2. the double pipe heat exchanger with enhanced heat exchange face according to claim 1, is characterized in that: described outer tube (9) outer surface is provided with the band groove (11) being in the peripheral annular of described annular ridge (10).
3. the double pipe heat exchanger with enhanced heat exchange face according to claim 1, it is characterized in that: the height of described pyramid fin (7) is 0.8 ~ 2.2mm, the described interior pipe (8) of each meter long is provided with altogether 7000 ~ 15000 described pyramid fins (7).
4. the double pipe heat exchanger with enhanced heat exchange face according to claim 1, it is characterized in that: described annular ridge (10) is uniformly distributed described outer tube (9) inner surface is equidistant, and each annular ridge is arranged perpendicular to the axial line of outer tube.
5. the double pipe heat exchanger with enhanced heat exchange face according to claim 4, it is characterized in that: the axial width of described annular ridge (10) is 3 ~ 7mm, radial width is 0.4 ~ 0.7mm, and the distance between adjacent two annular ridges (10) is 10 ~ 16mm.
6. the double pipe heat exchanger with enhanced heat exchange face according to claim 1, is characterized in that: the inner surface of described interior pipe (8) is provided with some conduits (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520804641.2U CN205090836U (en) | 2015-10-16 | 2015-10-16 | Double pipe heat exchanger with reinforce heat -transfer surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520804641.2U CN205090836U (en) | 2015-10-16 | 2015-10-16 | Double pipe heat exchanger with reinforce heat -transfer surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205090836U true CN205090836U (en) | 2016-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520804641.2U Expired - Fee Related CN205090836U (en) | 2015-10-16 | 2015-10-16 | Double pipe heat exchanger with reinforce heat -transfer surface |
Country Status (1)
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| CN (1) | CN205090836U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288908A (en) * | 2016-08-30 | 2017-01-04 | 蔡蔚珍 | Multi-purpose vehicle(MPV) radiator |
| WO2018023899A1 (en) * | 2016-08-03 | 2018-02-08 | 马明辉 | Heat exchange tube |
| WO2018023900A1 (en) * | 2016-08-03 | 2018-02-08 | 马明辉 | Heat exchanger |
| CN108225057A (en) * | 2018-02-11 | 2018-06-29 | 佛山科学技术学院 | A kind of concave surface heat exchanger tube double pipe heat exchanger |
-
2015
- 2015-10-16 CN CN201520804641.2U patent/CN205090836U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018023899A1 (en) * | 2016-08-03 | 2018-02-08 | 马明辉 | Heat exchange tube |
| WO2018023900A1 (en) * | 2016-08-03 | 2018-02-08 | 马明辉 | Heat exchanger |
| CN106288908A (en) * | 2016-08-30 | 2017-01-04 | 蔡蔚珍 | Multi-purpose vehicle(MPV) radiator |
| CN108225057A (en) * | 2018-02-11 | 2018-06-29 | 佛山科学技术学院 | A kind of concave surface heat exchanger tube double pipe heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160316 Termination date: 20201016 |
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| CF01 | Termination of patent right due to non-payment of annual fee |