CN106643259A - Composite tooth-shaped internal thread copper pipe structure - Google Patents
Composite tooth-shaped internal thread copper pipe structure Download PDFInfo
- Publication number
- CN106643259A CN106643259A CN201611010010.9A CN201611010010A CN106643259A CN 106643259 A CN106643259 A CN 106643259A CN 201611010010 A CN201611010010 A CN 201611010010A CN 106643259 A CN106643259 A CN 106643259A
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- China
- Prior art keywords
- rib
- copper pipe
- tooth
- deformation
- deformation guiding
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- Legal status (The legal status 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 status listed.)
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Classifications
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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
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
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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 relates to the technical field of heat exchanging tubes and discloses a composite tooth-shaped internal thread copper pipe structure. The structure comprises a copper pipe body, the inner wall of the copper pipe body is uniformly provided with base tooth ribs distributed in a helical mode, and the cross section of each base tooth rib is in a trapezoidal shape. The tops of the base tooth ribs extend to one side to form deformation guide ribs, the tops of the deformation guide ribs are located on the same side of the normal lines of the base tooth ribs, and all the deformation guide ribs are divided into a plurality of groups, arc angles corresponding to all groups of deformation guide ribs are equal, and the heights of the deformation guide ribs in the same group of deformation guide ribs are sequentially decreased from one end to the other end in the circumferential direction. After the copper pipe is inserted into a connection hole of a cooling fin, the deformation guide ribs can be subjected to oriented bending deformation when a core rod is inserted into an inner hole of the copper pipe for pipe expanding extrusion, crumbling is prevented, a heat exchange nep cannot be decreased, and meanwhile, the turbulent flow effect of a refrigerant on the inner wall of the copper pipe is enhanced.
Description
Technical field
The present invention relates to heat transmission copper pipe technical field, more particularly to a kind of composite tooth form inner screw thread copper pipe structure.
Background technology
Air-conditioning condenser common at present（Heat exchanger）For tube-fin condenser, if tube-fin condenser include condenser pipe and
Dry fin, condenser pipe is made up of heat transmission copper pipe, and condenser pipe is penetrated and is connected with fin in the connecting hole of fin, in order to improve
The heat exchange efficiency of refrigerant, usual condenser pipe all adopts inner screw thread copper pipe.But lead between heat transmission copper pipe and the connecting hole of fin
Small gap is commonly present, this is unfavorable for the heat exchange between copper pipe and fin, therefore copper pipe inserts the connecting hole of fin
After need with core bar insertion copper pipe endoporus carry out tube expansion operation, the external diameter of copper pipe is swollen, so that copper pipe outer and radiating
The connecting hole of piece is brought into close contact.For copper pipe common at present, the shape of the thread cross-section in copper pipe is various, there is triangle
It is shape, trapezoidal, rectangle, M shapes, Y shape, semicircular, but the whatsoever screw thread of cross sectional shape（Also tooth bar or tooth rib are）, in core
A same problem can be all run into during bar tube expansion operation, tooth rib top is subject to core bar tube expansion that crumple can occur when extruding, and this is just
Cause the high reduction of tooth of tooth rib, reduce refrigerant turbulent flow effect；The surface area of tooth rib reduces, and finally reduces the table of whole copper pipe inwall
Area, this can reduce the heat exchanger effectiveness of refrigerant and copper pipe.
For example：Chinese patent Authorization Notice No. CN202393281U, authorized announcement date August in 2012 22 days, discloses one
Plant inner screw thread copper pipe；And for example Chinese patent Authorization Notice No. CN204535508U, authorized announcement date August in 2015 5 days, discloses
A kind of inner screw thread copper pipe for adapting to high viscosity refrigerant.At present all of female screw heat-transfer pipe exists and burst after internal thread is squeezed
The problem of contracting, has a strong impact on the heat transference efficiency of copper pipe, improves media flow resistance.
The content of the invention
Problem in order to overcome the copper pipe of the prior art crumple of internal thread extruding in actual use of the invention, carries
A kind of high efficient heat exchanging type copper pipe structure is supplied, energy directional deformation, will not reduce when the internal thread of this kind of copper pipe is extruded by core bar
Heat exchange area, while the turbulent flow of refrigerant, flow-disturbing in copper pipe can also be improved, strengthens the heat exchange between refrigerant and copper pipe.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of composite tooth form inner screw thread copper pipe structure, including copper pipe body, the inwall of the copper pipe body is uniformly provided with helically
The base tooth rib of distribution, the cross section of the base tooth rib is trapezoidal, and the top of the base tooth rib extends to form deformation guiding to side
Rib, the top of the deformation guiding rib is located at the same side of the normal of base tooth rib, and all of deformation guiding rib is divided into some groups, often
The corresponding arc chord angle of group deformation guiding rib is equal, and the height of the deformation guiding rib in same group of deformation guiding rib is circumferentially from one
The other end is held to reduce successively.In the connecting hole of copper pipe insertion fin, copper pipe inwall is extruded by core bar, deformation guiding rib is received
Directional curvature deformation can occur to pressure effect, so as to prevent crumple, directional curvature deformation from will not change copper pipe body inwall
Surface area, so that it is guaranteed that the heat exchange area between refrigerant and copper pipe；Each deformation guiding rib in every group of deformation guiding rib
Height changes successively, and when this results in the extruding of core bar tube expansion, the angle of bend of each deformation guiding rib is different, so that adjacent
The cross sectional shape in the space surrounded between two base tooth ribs is different, and refrigerant turbulent flow, flow-disturbing effect in copper Bottomhole pressure strengthen, cold
Heat exchange between matchmaker and copper pipe strengthens.
Preferably, being provided with Auxiliary support rib between two neighboring base tooth rib, the height of the Auxiliary support rib is more than base
The height of tooth rib, the height of the Auxiliary support rib is less than maximum height of the deformation guiding rib apart from copper pipe body inwall, described
The top side of Auxiliary support rib is provided with secondary deformation and is oriented to breach.When core bar tube expansion is extruded, in secondary deformation breach is oriented to
Under effect, directional deformation can also occur, so that the inwall of copper pipe body can build when the top of Auxiliary support rib is pressurized
More complicated space structure（Internal thread, tooth bar, tooth rib in seamless copper pipe etc. in the fabrication process Tensile extrusion process with
And the restriction of core rod, the space developed completely can only be manufactured, tooth rib can be de- with core rod when so just can ensure that stretching extruding
From）, turbulent flow, the flow-disturbing intensity of refrigerant are further improved, improve heat exchanger effectiveness.
Preferably, the height of the Auxiliary support rib is equal to the maximum height and minimum constructive height sum of deformation guiding rib
Mean value.When core bar tube expansion is extruded, deform higher than the deformation guiding rib of Auxiliary support rib, then the deformation of Auxiliary support rib, finally
Deform less than the deformation guiding rib of Auxiliary support rib；It is higher than Auxiliary support to be used to limit less than the deformation guiding rib of Auxiliary support rib
The deformation guiding rib of rib, the largest deformation amount of Auxiliary support rib, so as to prevent excessive deformation.
Preferably, the direction that the secondary deformation on two neighboring Auxiliary support rib is oriented to breach is contrary.
Preferably, highest deformation guiding rib is 1.8-2 with the ratio of the tooth height of base tooth rib apart from the distance of copper pipe inwall,
Minimum deformation guiding rib is 1.2-1.3 with the ratio of the tooth height of base tooth rib apart from the distance of copper pipe inwall.
Preferably, the cross section of the Auxiliary support rib is triangular in shape, addendum angle a of Auxiliary support rib is 15 ° -25 °.
Therefore, the present invention has the advantages that：（1）Deformation guiding rib in copper pipe body is extruded by core bar tube expansion
When can directional deformation, the heat exchange area of copper pipe body inwall will not be reduced；（2）The orientation of deformation guiding rib, Auxiliary support rib
Deformation causes the construction of copper pipe inwall more complicated, can significantly promote refrigerant that turbulent flow, flow-disturbing are formed at copper pipe inwall, improves
Heat exchange；（3）This kind overcomes by way of core bar tube expansion controls tooth rib directional deformation so as to change copper pipe inner wall space structure
The restriction of seamless copper pipe internal thread machining process Tensile extrusion process and core rod.
Description of the drawings
Fig. 1 is the structural representation for applying example 1.
Fig. 2 is the close-up schematic view of embodiment 1.
Fig. 3 is the structural representation of embodiment 2.
Fig. 4 is the close-up schematic view of embodiment 2.
In figure：Copper pipe body 1, base tooth rib 2, deformation guiding rib 3, normal 4, Auxiliary support rib 5, secondary deformation are oriented to breach
50。
Specific embodiment
With reference to the accompanying drawings and detailed description the invention will be further described：
Embodiment 1：A kind of composite tooth form inner screw thread copper pipe structure as depicted in figs. 1 and 2, including copper pipe body 1, copper pipe body
Inwall be uniformly provided with base tooth rib 2 in spiral distribution, the cross section of base tooth rib is trapezoidal, and the top of base tooth rib to side extends
Deformation guiding rib 3 is formed, the top of deformation guiding rib 3 is located at the same side of the normal 4 of base tooth rib, and deformation guiding rib is divided into eight
Group, the corresponding arc chord angle of every group of deformation guiding rib is equal, and the height of the deformation guiding rib in same group of deformation guiding rib is along week
Reduce successively to passing through.
In the present embodiment, in the connecting hole of copper pipe insertion fin, copper pipe inwall is extruded by core bar, deformation guiding rib is received
Directional curvature deformation can occur to pressure effect, so as to prevent crumple, directional curvature deformation from will not change copper pipe body inwall
Surface area, so that it is guaranteed that the heat exchange area between refrigerant and copper pipe；Each deformation guiding rib in every group of deformation guiding rib
Height changes successively, and when this results in the extruding of core bar tube expansion, the angle of bend of each deformation guiding rib is different, so that adjacent
The cross sectional shape in the space surrounded between two base tooth ribs is different, and refrigerant turbulent flow, flow-disturbing effect in copper Bottomhole pressure strengthen, cold
Heat exchange between matchmaker and copper pipe strengthens.
Embodiment 2：A kind of composite tooth form inner screw thread copper pipe structure as shown in Figure 3 and Figure 4, including copper pipe body 1, copper pipe
The inwall of body is uniformly provided with base tooth rib 2 in spiral distribution, and the cross section of base tooth rib is trapezoidal, and the top of base tooth rib is to side
Extension forms deformation guiding rib 3, and the top of deformation guiding rib 3 is located at the same side of the normal 4 of base tooth rib, and deformation guiding rib is divided into
Eight groups, the corresponding arc chord angle of every group of deformation guiding rib is equal, the height of the deformation guiding rib in same group of deformation guiding rib along
Circumferentially pass through and reduce successively；
Auxiliary support rib 5 is provided between two neighboring base tooth rib, the height of Auxiliary support rib 5 is aided in more than the height of base tooth rib
The height of ribs 5 is less than maximum height of the deformation guiding rib apart from copper pipe body inwall, and the top side of Auxiliary support rib sets
There is secondary deformation to be oriented to breach 50, the height of Auxiliary support rib is equal to the maximum height and minimum constructive height sum of deformation guiding rib
Mean value；
The cross section of Auxiliary support rib is triangular in shape, and addendum angle a of Auxiliary support rib is 15 ° -25 °, two neighboring Auxiliary support
The direction that secondary deformation on rib is oriented to breach is contrary；Distance and base tooth rib of the highest deformation guiding rib apart from copper pipe inwall
The ratio of tooth height is 1.8-2, and minimum deformation guiding rib is 1.2- with the ratio of the tooth height of base tooth rib apart from the distance of copper pipe inwall
1.3。
In the present embodiment, when core bar tube expansion is extruded, deform higher than the deformation guiding rib of Auxiliary support rib, then Auxiliary support
Rib deforms, and finally deforms less than the deformation guiding rib of Auxiliary support rib；It is used to limit less than the deformation guiding rib of Auxiliary support rib
The largest deformation amount of deformation guiding rib, Auxiliary support rib higher than Auxiliary support rib, so as to prevent excessive deformation.
Claims (6)
1. a kind of composite tooth form inner screw thread copper pipe structure, including copper pipe body, is characterized in that, the inwall of the copper pipe body is uniform
Base tooth rib in spiral distribution is provided with, the cross section of the base tooth rib is trapezoidal, the top of the base tooth rib extends shape to side
Into deformation guiding rib, the top of the deformation guiding rib is located at the same side of the normal of base tooth rib, all of deformation guiding rib point
For some groups, the corresponding arc chord angle of every group of deformation guiding rib is equal, the height of the deformation guiding rib in same group of deformation guiding rib
Circumferentially passing through reduces successively.
2. a kind of composite tooth form inner screw thread copper pipe structure according to claim 1, is characterized in that, two neighboring base tooth rib it
Between be provided with Auxiliary support rib, the height of the Auxiliary support rib more than base tooth rib height, the Auxiliary support rib it is highly little
In deformation guiding rib apart from copper pipe body inwall maximum height, the top side of the Auxiliary support rib is provided with secondary deformation and leads
To breach.
3. a kind of composite tooth form inner screw thread copper pipe structure according to claim 2, is characterized in that, the Auxiliary support rib
Highly equal to the maximum height and the mean value of minimum constructive height sum of deformation guiding rib.
4. a kind of composite tooth form inner screw thread copper pipe structure according to Claims 2 or 3, is characterized in that, two neighboring auxiliary
The direction that secondary deformation in ribs is oriented to breach is contrary.
5. a kind of composite tooth form inner screw thread copper pipe structure according to claim 1, is characterized in that, highest deformation guiding rib
Be 1.8-2 apart from the ratio of tooth height of distance and the base tooth rib of copper pipe inwall, minimum deformation guiding rib apart from copper pipe inwall away from
It is 1.2-1.3 from the ratio with the tooth height of base tooth rib.
6. a kind of composite tooth form inner screw thread copper pipe structure according to Claims 2 or 3, is characterized in that, the Auxiliary support
The cross section of rib is triangular in shape, and addendum angle a of Auxiliary support rib is 15 ° -25 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611010010.9A CN106643259A (en) | 2016-11-17 | 2016-11-17 | Composite tooth-shaped internal thread copper pipe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611010010.9A CN106643259A (en) | 2016-11-17 | 2016-11-17 | Composite tooth-shaped internal thread copper pipe structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106643259A true CN106643259A (en) | 2017-05-10 |
Family
ID=58808172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611010010.9A Pending CN106643259A (en) | 2016-11-17 | 2016-11-17 | Composite tooth-shaped internal thread copper pipe structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106643259A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114460702A (en) * | 2022-02-18 | 2022-05-10 | 浙江富春江光电科技有限公司 | Novel asymmetric optical fiber directional bending type optical cable |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS603916A (en) * | 1983-06-21 | 1985-01-10 | Kobe Steel Ltd | Manufacture of heat transmitting tube provided with grooved inner surface |
| JPS60216190A (en) * | 1984-04-10 | 1985-10-29 | Matsushita Seiko Co Ltd | Heat transfer pipe and manufacture thereof |
| JPH08168817A (en) * | 1994-12-19 | 1996-07-02 | Sumitomo Light Metal Ind Ltd | Production of heat exchanger having inner groove |
| WO2001038812A2 (en) * | 1999-11-19 | 2001-05-31 | Mitsubishi Shindoh Co., Ltd. | Heat exchanger tube with grooved inner surface, tube expansion method therefor, and device for manufacture thereof |
| JP2010243132A (en) * | 2009-04-10 | 2010-10-28 | Hitachi Cable Ltd | Heat transfer tube and heat exchanger |
| CN102713487A (en) * | 2010-01-13 | 2012-10-03 | 三菱电机株式会社 | Heat transfer tube for heat exchanger, heat exchanger, refrigeration cycle device, and air conditioning device |
| CN104654886A (en) * | 2014-12-30 | 2015-05-27 | 浙江耐乐铜业有限公司 | Internal threaded heat-transfer copper pipe |
| CN204666014U (en) * | 2015-05-15 | 2015-09-23 | 河南机电高等专科学校 | Bidentate air-conditioning refrigerating heat exchange riffled tube |
-
2016
- 2016-11-17 CN CN201611010010.9A patent/CN106643259A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS603916A (en) * | 1983-06-21 | 1985-01-10 | Kobe Steel Ltd | Manufacture of heat transmitting tube provided with grooved inner surface |
| JPS60216190A (en) * | 1984-04-10 | 1985-10-29 | Matsushita Seiko Co Ltd | Heat transfer pipe and manufacture thereof |
| JPH08168817A (en) * | 1994-12-19 | 1996-07-02 | Sumitomo Light Metal Ind Ltd | Production of heat exchanger having inner groove |
| WO2001038812A2 (en) * | 1999-11-19 | 2001-05-31 | Mitsubishi Shindoh Co., Ltd. | Heat exchanger tube with grooved inner surface, tube expansion method therefor, and device for manufacture thereof |
| JP2010243132A (en) * | 2009-04-10 | 2010-10-28 | Hitachi Cable Ltd | Heat transfer tube and heat exchanger |
| CN102713487A (en) * | 2010-01-13 | 2012-10-03 | 三菱电机株式会社 | Heat transfer tube for heat exchanger, heat exchanger, refrigeration cycle device, and air conditioning device |
| CN104654886A (en) * | 2014-12-30 | 2015-05-27 | 浙江耐乐铜业有限公司 | Internal threaded heat-transfer copper pipe |
| CN204666014U (en) * | 2015-05-15 | 2015-09-23 | 河南机电高等专科学校 | Bidentate air-conditioning refrigerating heat exchange riffled tube |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114460702A (en) * | 2022-02-18 | 2022-05-10 | 浙江富春江光电科技有限公司 | Novel asymmetric optical fiber directional bending type optical cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Dong Daowei Inventor after: Liu Jinlong Inventor before: Liu Jinlong |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170922 Address after: 335200 Jiangxi city of Yingtan province Yujiang County Development Zone, Wuhu Applicant after: Jiangxi Naile Copper Co., Ltd. Applicant after: Zhejiang Nai Letong industry Co., Ltd Address before: 312300 people's West Road, Shangyu Economic Development Zone, Shaoxing, Zhejiang Applicant before: Zhejiang Nai Letong industry Co., Ltd Applicant before: Jiangxi Naile Copper Co., Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |