CN100533045C - Heat transfer pipe - Google Patents
Heat transfer pipe Download PDFInfo
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- CN100533045C CN100533045C CNB2006100090906A CN200610009090A CN100533045C CN 100533045 C CN100533045 C CN 100533045C CN B2006100090906 A CNB2006100090906 A CN B2006100090906A CN 200610009090 A CN200610009090 A CN 200610009090A CN 100533045 C CN100533045 C CN 100533045C
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- heat
- transfer pipe
- pipe
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Abstract
The present invention provides one kind of heat transfer pipe for heat exchanger, and aims at raising heat transfer performance. Inside the heat transfer pipe, structure for expanding heat transfer area is set while maintaining the outer diameter of the heat transfer pipe unchanged in 6.0-15.0 mm. The present invention can obtain high heat transfer performance essentially the same as that of heat transfer pipe with inner diameter reduced to 12-5.0 mm, or the heat transfer effect over 3 times that of smooth pipe.
Description
Technical field
The present invention relates to the heat-transfer pipe used in the heat exchangers such as room air conditioner, air-conditioning box, air conditioner for automobile, refrigerator, household freezer.
Background technology
In the past, as the heat-transfer pipe that this heat exchanger is used, extensively adopted patent documentation 1 (Japan's patent disclosure clear 60-142195) and patent documentation 2 (Japan's patent disclosure flat 8-49992) cross section of record to form the pipe of the grooved inner surface of trapezoid spiral groove.Fig. 4 is the partial sectional view of heat-transfer pipe of the existing grooved inner surface of patent documentation 1 and patent documentation 2 records.Fig. 5 is along the partial enlarged drawing in the cross section of A-A among Fig. 4.
Existing grooved inner surface heat-transfer pipe 101 is trapezoidal continuous helical groove 103 (pitch angle alpha will) in the inner surface formation cross section of metal tubes such as copper pipe 102, but in order to improve the intraductal heat transfer rate of pipe heat-transfer pipe 101, as described in patent documentation 1, be good with the height (H) of increasing the triangular hill portion (lug) 104 that forms between groove, the drift angle (γ) that reduces lug, expansion heat transfer area.
Again, in the patent documentation 2, consider heat transfer property and processability, the drift angle (γ) of lug 104 is taken as 10 degree～30 degree, groove depth (H) is taken as H/Di=0.04～0.05 etc. with the ratio of bore (Di), seeks to optimize each size.
Yet, in the above-mentioned existing formation, the inner surface heat transfer area of grooved inner surface heat-transfer pipe is compared with the heat transfer area that does not have the spiral fluted smooth tubes, for about its 1.5～2.5 times, so its fluid diameter D (D=4 * flow area/infiltration edge length) is too big, for example the fluid diameter of the smooth tubes of outer diameter D o=7mm, wall thickness T f=0.25mm is 4 * { π * (7-2 * 0.25)
2/ 4}/{ π * (7-0.25) }=6.50mm, corresponding, this inner surface is processed in the heat-transfer pipe of trough of belt, even if when inner surface heat transfer area (promptly soaking into edge length) is taken as 2.5 times of smooth tubes, its fluid diameter also is 4 * { π * (7-2 * 0.25)
2/ 4}/{ 2.5 * π * (7-0.25) }=2.60mm.Yet, knownly make fluid diameter further reduce to obtain good performance, and heat exchanger high performance, miniaturization aspect need further to reduce significantly the technology of fluid diameter by the heat-transfer pipe diameter is run business into particular one.
The present invention solves above-mentioned problem, and its purpose is to provide a kind of heat-transfer pipe of high heat-transfer performance, and the heat-transfer pipe outside dimension former state of this high heat-transfer performance is constant, it is identical but to obtain in fact when significantly the heat-transfer pipe diameter being run business into particular one.
Summary of the invention
In order to solve above-mentioned existing problem, a kind of heat-transfer pipe is provided, the structure that enlarges when making heat transfer area than smooth tubes is set in that heat-transfer pipe is inner, be at least 3 times of smooth tubes thereby make heat transfer area.Utilize this structure, heat-transfer pipe outside dimension former state is constant but to obtain high heat-transfer performance identical when in fact significantly the heat-transfer pipe diameter being run business into particular one.
According to the 1st preferred mode of heat-transfer pipe of the present invention, use to be connected with the inner surface of heat-transfer pipe and the cross section is circular a plurality of pipe-like bodies, constitute the structure that enlarges heat transfer area.
According to the 2nd preferred mode of heat-transfer pipe of the present invention, use with respect to heat-transfer pipe be the cross section of concentric circles be circular pipe-like body and the outer surface that makes circular pipe shape body with the inner surface of heat-transfer pipe between a plurality of ribs of linking to each other, constitute the structure of expansion heat transfer area.
According to heat-transfer pipe of the present invention, the external diameter of heat-transfer pipe is 6.0mm～15.0mm, but inner flow area with vertical cross-section reduces not quite, but heat transfer area is expanded as 3～5 times form of smooth tubes, and fluid diameter made 1.2mm～5.0mm, thereby do not change the heat-transfer pipe external diameter, but can obtain high heat-transfer performance identical when in fact significantly the heat-transfer pipe diameter being run business into particular one.
Description of drawings
Fig. 1 is the cutaway view of the heat exchanger of embodiment of the present invention 1 with heat-transfer pipe.
Fig. 2 is the stereogram of the heat exchanger of biopsy cavity marker devices embodiment of the present invention 1 with heat-transfer pipe.
Fig. 3 is the cutaway view of the heat exchanger of embodiment of the present invention 2 with heat-transfer pipe.
Fig. 4 is the partial, longitudinal cross-sectional of existing grooved inner surface heat-transfer pipe.
Fig. 5 is along the local amplification view of A-A among Fig. 4.
The specific embodiment
Below, with reference to the description of drawings embodiments of the present invention.
Fig. 1 is the cutaway view of the heat exchanger of embodiment of the present invention 1 with heat-transfer pipe, and Fig. 2 is the stereogram of the heat exchanger of biopsy cavity marker devices embodiment of the present invention 1 with heat-transfer pipe.
Among Fig. 1, Fig. 2, the heat exchanger of embodiment of the present invention 1 is 6.0mm～15.0mm with the outer diameter D o1 of heat-transfer pipe 1, and specifically, for example 8.0mm, wall thickness T f1 is 0.26mm.The inside of heat-transfer pipe 1 has that a plurality of inner surfaces with heat-transfer pipe 1 link to each other and the cross section is the pipe-like body of circular.Specifically, forming 4 outer diameter D o2 is that the cross sectional shape of 0.1mm is the runner 2 of circular for about 3.1mm, wall thickness T f2, and is that the periphery of the runner 2 of circular connects into the interior week of heat-transfer pipe 1 tangent with cross sectional shape.As shown in Figure 1, when the circle of the inboard of the circle of radius R and 4 radius r was tangent, the relation of R=(1+ √ 2) r was set up.As shown in Figure 2, with cross sectional shape be circular 4 runners 2 heat-transfer pipe 1 axially, twist into helical form.
At this moment, compare when not having cross sectional shape to be the runner 2 of circular, the heat transfer area of described heat-transfer pipe 1 (=soak into edge length * heat-transfer pipe length) is the former 4.3 times of [2 * 4 * π * 3.1+ π * (8-2 * 0.26)]/[π * (8-2 * 0.26)] ≈, promptly be in the former 3～5 times scope, and flow diameter D is that D=4 * cross section of fluid channel amasss/soak into edge length ≈ π * (8-2 * 0.26)
2/ [2 * 4 * π * 3.1+ π * (8-2 * 0.26)] ≈ 1.73mm is set the scope into 1.2mm～5.0mm.
The heat exchanger that below constitutes like that is with in the heat-transfer pipe, outer diameter D o1 is 6.0mm～15.0mm, wall thickness T f1 is the heat-transfer pipe 1 of 0.26mm, forming 4 outer diameter D o2 in inside is about 3.1mm, wall thickness T f2 is that the cross sectional shape of 0.1mm is the runner 2 of circular, and be that the periphery of the runner 2 of circular connects into the interior week of heat-transfer pipe 1 tangent with cross sectional shape, thereby compare when not having cross sectional shape to be the runner 2 of circular, the heat transfer area of described heat-transfer pipe 1 is the former 4.3 times, be in 3～5 times scope, and flow diameter D ≈ 1.73mm, be set scope at 1.2mm～5.0mm, thereby the external diameter former state of heat-transfer pipe 1 keeps 8.0mm, but can obtain high heat-transfer performance identical when in fact significantly the heat-transfer pipe diameter being run business into particular one.
Owing to the axial twisting cross sectional shape at heat-transfer pipe 1 is 4 runners 2 of circular, the rotation of the refrigerant of internal circulation can improve heat transfer property during energy again.
Fig. 3 is the cutaway view of the heat exchanger of embodiment of the present invention 2 with heat-transfer pipe.
Among Fig. 3, the heat exchanger of embodiment of the present invention 2 is 6.0mm～15.0mm (being specially 7.0mm) with the outer diameter D o1 of heat-transfer pipe 11, and wall thickness T f1 is 0.25mm.It is that circular and outer diameter D o2 are that 4.0mm, wall thickness T f2 are the pipe-like body 12 of 0.15mm with respect to heat-transfer pipe 11 for the cross section of concentric circles that the inside of heat-transfer pipe 11 has at least one (being specially 1 in embodiment of the present invention 2), and makes with a plurality of ribs 13 (being specially 8 ribs 13 in the present embodiment 2) between interior week of periphery and heat-transfer pipe 11 of pipe-like body 12 of circular and link to each other.Also on the pipe-like body 12 of circular, form notch part 14, make the inside of heat-transfer pipe 11 become the state that does not obtain being communicated with producing independent runner.
At this moment, the infiltration edge length of heat-transfer pipe 11 inboards is π * (7-2 * 0.25), the infiltration edge length of rib 13 both sides is 2 * 8 * (7-2 * 0.25-4)/2, the infiltration edge length of pipe-like body 12 both sides is 2 * π * 4, thereby compare when not having cross sectional shape to be the runner 12 of circular, the heat transfer area of described heat-transfer pipe 11 (=soak into edge length * heat-transfer pipe length) is the former 4.2 times of [π * (7-2 * 0.25)+2 * 8 * (7-2 * 0.25-4)/2+2 * π * 4]/[π * (7-2 * 0.25)] ≈, be in the former 3～5 times scope, and flow diameter D is that D=4 * cross section of fluid channel amasss/soak into edge length ≈ π * (7-2 * 0.25)
2/ [π * (7-2 * 0.25)+2 * 8 * (7-2 * 0.25-4)/2+2 * π * 4] ≈ 1.55mm is set the scope into 1.2mm～5.0mm.
The heat exchanger that below constitutes like that is with in the heat-transfer pipe, outer diameter D o1 is 7.0mm, wall thickness T f1 is that the heat-transfer pipe 11 of 0.25mm is 4.0mm in inside with outer diameter D o2, wall thickness T f2 is that the cross sectional shape of 0.15mm is that the runner 12 of circular forms with heat-transfer pipe 11 and is concentrically ringed shape, and make with 8 ribs 13 between interior week of periphery and heat-transfer pipe 11 of pipe-like body 12 of circular and link to each other, thereby compare when not having cross sectional shape to be the runner 12 of circular, the heat transfer area of described heat-transfer pipe 11 is the former 4.2 times, be in the former 3～5 times scope, and fluid diameter D ≈ 1.55mm, be set scope at 1.2mm～5.0mm, thereby the external diameter former state of heat-transfer pipe 11 keeps 7.0mm, but can obtain high heat-transfer performance identical when significantly the heat-transfer pipe diameter being run business into particular one 1.55mm in fact.
Have again, owing on the pipe-like body 12 of circular, form notch part 14, the inside of heat-transfer pipe 11 forms the state that does not obtain being communicated with not producing independent runner, so the cooling medium liquid of internal circulation is mixed stirring, can seek to promote to conduct heat, also discharge the cooling medium liquid of the thermal resistance that becomes heat exchange simultaneously, thereby heat transfer property is improved.
Identical with embodiment 2, also can on the cross section is the pipe-like body 2 of circular, notch part be set in the embodiment 1, inside at heat-transfer pipe 1 forms the state that does not obtain being communicated with not producing independent runner, so the cooling medium liquid of internal circulation is mixed stirring, can seek to promote to conduct heat, also discharge the cooling medium liquid of the thermal resistance that becomes heat exchange simultaneously, thereby heat transfer property is improved.
Identical with embodiment 1, also can be formed in the pipe-like body 12 of the axial screw shape twisting circular of heat-transfer pipe 11 in the present embodiment 2, thereby can make the refrigerant rotation of internal circulation, can improve heat transfer property.
As the heat exchanger of embodiment of the present invention 1 and embodiment of the present invention 2 refrigerant, use hfc refrigerant or HC refrigerant or CO2 refrigerant or their mixing refrigerant, thereby can make the commodity of looking after environment with the internal circulation of heat-transfer pipe 1,11.
Industrial practicality
Heat transfer tube of heat exchanger of the present invention, although the external diameter of heat-transfer pipe is 6.0mm～15.0mm, But inner flow area with axle vertical cross-section reduces not quite, when but heat transfer area being expanded as smooth tubes 3～5 times form, and fluid diameter made 1.2mm～5.0mm, utilize this formation, pass Heat pipe outside dimension former state is constant, but can obtain when in fact significantly the heat-transfer pipe diameter being run business into particular one identical High heat-transfer performance, thereby as being used for room air conditioner, air-conditioning box, air conditioner for automobile, refrigerator, cold The heat-transfer pipe that freezes the heat exchanger of case etc. is useful.
Claims (8)
1, a kind of heat-transfer pipe, outer shape are circular, are used for heat exchanger, it is characterized in that,
Inner face contacting structure with heat-transfer pipe is set in the inside of heat-transfer pipe, and the inner face that forms the structure of utilizing the inside that is arranged at heat-transfer pipe and heat-transfer pipe makes the stream of fluid of the internal circulation of heat-transfer pipe,
The heat transfer area of being determined by the infiltration edge length of the inner face of the infiltration edge length of the structure of the inside that is arranged at heat-transfer pipe and heat-transfer pipe is at least 3 times of heat transfer area of smooth tubes,
The inside and outside stream of structure that comprises the inside that is arranged at heat-transfer pipe is interior, and whole identical fluids of circulation in the inside of heat-transfer pipe carry out heat exchange between the fluid outside the fluid of the inside that circulates in heat-transfer pipe and the heat-transfer pipe,
With being connected with the inner surface of described heat-transfer pipe and the cross section is circular a plurality of pipe-like bodies, constitute the described structure that enlarges heat transfer area.
2, the heat-transfer pipe described in claim 1 is characterized in that,
Constitute described circular pipe shape body in tangent mode.
3, the heat-transfer pipe described in claim 1 is characterized in that,
On the pipe-like body of described circle, notch part is set, makes the mobile non-one that forms independently of the fluid in the described heat-transfer pipe.
4, a kind of heat-transfer pipe, outer shape are circular, are used for heat exchanger, it is characterized in that,
Inner face contacting structure with heat-transfer pipe is set in the inside of heat-transfer pipe, and the inner face that forms the structure of utilizing the inside that is arranged at heat-transfer pipe and heat-transfer pipe makes the stream of fluid of the internal circulation of heat-transfer pipe,
The heat transfer area of being determined by the infiltration edge length of the inner face of the infiltration edge length of the structure of the inside that is arranged at heat-transfer pipe and heat-transfer pipe is at least 3 times of heat transfer area of smooth tubes,
The inside and outside stream of structure that comprises the inside that is arranged at heat-transfer pipe is interior, and whole identical fluids of circulation in the inside of heat-transfer pipe carry out heat exchange between the fluid outside the fluid of the inside that circulates in heat-transfer pipe and the heat-transfer pipe,
Use with respect to described heat-transfer pipe be the cross section of concentric circles be circular pipe-like body and the outer surface that makes described circular pipe shape body with the inner surface of described heat-transfer pipe between a plurality of ribs of linking to each other, constitute the described structure that enlarges heat transfer area, on the pipe-like body of described circle, notch part is set, makes the mobile non-one that forms independently of the fluid in the described heat-transfer pipe.
5, the heat-transfer pipe described in claim 4 is characterized in that,
Also being provided with in the inside of described pipe-like body with respect to described heat-transfer pipe is that the cross section of concentric circles is another circular pipe-like body, and links to each other between the inner surface of the outer surface that makes described another pipe-like body with a plurality of ribs and described pipe-like body.
6, as claim 1 or 4 described heat-transfer pipes, it is characterized in that,
In mode, constitute the described structure that enlarges heat transfer area in the axial screw shape twisting of described heat-transfer pipe.
7, as claim 1 or 4 described heat-transfer pipes, it is characterized in that,
The external diameter of described heat-transfer pipe is 6.0mm～15.0mm.
8, as claim 1 or 4 described heat-transfer pipes, it is characterized in that,
Fluid at internal circulation is hfc refrigerant or HC refrigerant or CO2 refrigerant or their mixing refrigerant.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005061977 | 2005-03-07 | ||
| JP2005061977A JP2006242529A (en) | 2005-03-07 | 2005-03-07 | Heat transfer pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1831462A CN1831462A (en) | 2006-09-13 |
| CN100533045C true CN100533045C (en) | 2009-08-26 |
Family
ID=36993888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100090906A Expired - Fee Related CN100533045C (en) | 2005-03-07 | 2006-02-17 | Heat transfer pipe |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006242529A (en) |
| CN (1) | CN100533045C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318552A (en) * | 2014-07-31 | 2016-02-10 | 株式会社久保田 | Fluid heating device for an engine |
Families Citing this family (16)
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| CN102032827A (en) * | 2010-11-30 | 2011-04-27 | 上海科米钢管有限公司 | Process for processing heating jacket of heat exchange pipe |
| JP2015135210A (en) * | 2014-01-17 | 2015-07-27 | シーアイ化成株式会社 | Heat transfer tube for heat exchanger and heat exchanger |
| JP6289326B2 (en) * | 2014-09-22 | 2018-03-07 | 株式会社クボタ | Engine fluid heating structure |
| CN104654885B (en) * | 2014-12-30 | 2016-08-24 | 浙江耐乐铜业有限公司 | A kind of heat exchanging copper pipe structure |
| CN104654884B (en) * | 2014-12-30 | 2016-08-24 | 浙江耐乐铜业有限公司 | A kind of inner screw thread copper pipe structure |
| CN105953458A (en) * | 2016-05-18 | 2016-09-21 | 山东阿尔普尔节能装备有限公司 | Air source absorption type heat pump device combining fuel gas |
| JP6300970B2 (en) | 2016-09-08 | 2018-03-28 | 株式会社中温 | Multi-tube cooling and cold storage |
| CN107062960B (en) * | 2017-04-28 | 2018-11-16 | 山东大学 | A kind of loop circuit heat pipe of annular and separation device short transverse variation |
| CN106979709B (en) * | 2017-05-09 | 2019-03-19 | 山东大学 | A kind of condensable annular and separation device heat exchanger of spacing variation |
| CN108981428B (en) * | 2017-05-09 | 2019-09-17 | 山东大学 | A kind of method of the biphase gas and liquid flow heat exchanger of length planning and designing |
| CN106969652B (en) * | 2017-05-09 | 2019-03-19 | 山东大学 | A kind of condensable annular and separation device heat exchanger of length variation |
| CN109084603B (en) * | 2017-05-09 | 2019-12-31 | 山东大学 | Design method of annular separation device in gas-liquid two-phase flow heat exchange tube |
| CN107044788B (en) * | 2017-05-09 | 2019-02-26 | 山东大学 | A kind of condensable annular and separation device heat exchanger |
| CN108692594B (en) * | 2017-05-09 | 2019-05-17 | 山东大学 | It is a kind of setting intercommunicating pore can not condensing body annular and separation device heat exchanger |
| CN111256496A (en) * | 2018-11-30 | 2020-06-09 | 比亚迪股份有限公司 | Heat exchanger, thermal management system of vehicle and vehicle |
| CN112815762B (en) * | 2021-01-19 | 2022-12-09 | 珠海格力电器股份有限公司 | Heat exchange tube structure, heat exchange tube assembly and heat exchanger |
-
2005
- 2005-03-07 JP JP2005061977A patent/JP2006242529A/en not_active Withdrawn
-
2006
- 2006-02-17 CN CNB2006100090906A patent/CN100533045C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318552A (en) * | 2014-07-31 | 2016-02-10 | 株式会社久保田 | Fluid heating device for an engine |
| CN105318552B (en) * | 2014-07-31 | 2020-02-11 | 株式会社久保田 | Fluid heating device of engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1831462A (en) | 2006-09-13 |
| JP2006242529A (en) | 2006-09-14 |
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Granted publication date: 20090826 Termination date: 20130217 |