CN2548109Y - Cross-teeth thread-inside seamless efficient heat-conductive tube - Google Patents
Cross-teeth thread-inside seamless efficient heat-conductive tube Download PDFInfo
- Publication number
- CN2548109Y CN2548109Y CN 02237272 CN02237272U CN2548109Y CN 2548109 Y CN2548109 Y CN 2548109Y CN 02237272 CN02237272 CN 02237272 CN 02237272 U CN02237272 U CN 02237272U CN 2548109 Y CN2548109 Y CN 2548109Y
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- Prior art keywords
- tooth
- main
- transfer pipe
- efficient heat
- seamless
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Abstract
The utility model provides a cross tooth internal thread seamless efficient heat transfer pipe. A plurality of main tooth threads are made on the inner surface of the pipe. The section of the tooth profile is triangle or trapezoid. An auxiliary tooth which is connected with the main teeth is made on the bottom of the main tooth and different from the direction of the main tooth. One of the main tooth and the auxiliary tooth is higher than the other, and the center line surfaces of the two teeth shapes intersect. As the utility model is provided with the main tooth and the auxiliary tooth to cooperate mutually, the tooth number is increased by more than one time. Moreover the heights of the main and the auxiliary teeth are different, thus the tooth tip is the best vaporization and condensation core, which is more beneficial for vaporization, and a second flow disturbing effect is provided. The auxiliary tooth effectively disperses the static stress, which is provided with the effect of a stiffener at the meanwhile, thus the processing and using performance of the efficient heat transfer pipe is improved, and the involved size of the distended die of the manufacturer is not changed.
Description
Technical field
The utility model relates to a kind of in the inner structure that increases heat-transfer area that adopts of pipe fitting, particularly a kind of intersection teeth inner thread seamless and efficient heat-transfer pipe, be applicable to air-conditioning, used evaporimeter and the condenser of refrigeration industry, and the heat conducting interchanger of various high efficiency in other field.
Background technology
Existing heat-transfer pipe internal thread is equal-depth teeth internal thread and stage teeth internal thread, and the thread surface in the pipe is long-pending less than normal, adds to the restriction that is subjected to planform, and when carrying out liquid, the conversion of vapour two-phase states of matter in pipe, the laminar flow face has influence on heat exchanger effectiveness and stability thereof.As; The work of evaporation heat transfer pipe is refrigerant liquid, owing to the heat around constantly absorbing is vaporized, thereby reaches the purpose of refrigeration.Refrigerating capacity is: Q=K ※ F ※ Δ T (Q is a heat output in the formula, and K is an overall heat-transfer coefficient, and F is a total heat conduction area, and Δ T is the heat transfer logarithm temperature difference) shows that from computing formula refrigerating capacity mainly is limited by material characteristic, pipe inner structure form and internal surface area.Certain when the material characteristic of heat-transfer pipe, when heat transfer coefficient is constant, key is the increasing of internal surface area, and meets and reduce laminar flow in the hydrodynamics, increase turbulent flow, increases the version of evaporation, the nucleus of boiling, and present heat-transfer pipe is for the requirement that needs of today, performance very not intact as yet.
Simultaneously, because the processing mode characteristic of existing seamless riffled tube is inevitable concentrated at internal thread tooth root portion formation stress, in the follow-up curved process that expands, easily discharge stress and cracking occurs, or produce distortion improperly, this problem often occurs in the user of riffled tube uses.
Summary of the invention
The utility model order is to adopt the female thread structure form that changes heat-transfer pipe, makes rational fluid conduction and profile, obtains high efficiency heat exchange.A kind of intersection teeth inner thread seamless and efficient heat-transfer pipe, on its pipe internal surface, be shaped on thread tooth, it is characterized in that being shaped on the heat-transfer pipe inner surface many main tooth 1 screw threads, is left-handed or dextrorotation, and the cross section of profile of tooth is that triangle or stepped tooth, its tooth depth are to equate or do not wait; Differ from main tooth thread direction, have in main tooth 1 bottom be processed into cross section be triangle or trapezoidal, have the secondary tooth 2 that certain altitude equates or do not wait, and be to pass through mutually with main tooth 1; The structure that it is different lead angles that main tooth 1 can be made with secondary tooth 2, the hand of spiral is identical, major and minor tooth is one high and one low, the central axis face of two flute profiles intersects.The angle of main Tooth spiral and female tube axis direction (hand of spiral is left-handed or dextrorotation) β
zIt is 0～40 °; Secondary tooth 2 equates with main tooth 1 pitch or does not wait; Secondary tooth 2 is with respect to the angle β of female tube axis direction
fBe ± 10～80 °; Main tooth 1 apex angle
zIt is 20～60 °; Secondary tooth 2 apex angle
fIt is 30～100 °; Main tooth 1 height H
zBe 0.1～0.3mm, secondary tooth 2 height H
fBe 0.03～0.1mm; Main tooth spiral bar number is 20～80.Secondary tooth spiral bar number is 20～60.
Secondary tooth 2 of the present utility model is the effects with second-disturbing flow, and general crown is best vaporization and condensation nuclei, secondary tooth 2 is more than doubled the former number of teeth, and major and minor tooth height difference, the corner angle that produce make vaporization and condensation nuclei quantity, increased by 1～2 times than former riffled tube, more help condensing and vaporizing.Simultaneously, because the different rotation direction flute profile of inner surface, formed netted reinforcement, it is the effect that secondary tooth disperses stress to do to increase pipe intensity effectively, thereby eliminated former unidirectional internal thread tooth (equal-depth teeth and stage teeth) greatly, the quality problems and the defective that occur in dilating curved process have improved tubing processing serviceability.Reduce the probability that enlarging is split in the bloated expander process of evaporimeter and condenser, and then leak the generation of phenomenon in reducing, improve the high-quality yield rate.The seamless copper pipe production technology has been eliminated quality problems such as welding pipe seam place thermal resistance is big, has guaranteed the integrality of inner surface structure form.And for the producer that makes condenser and evaporimeter, can not change expands in the original production line expands die size, just obtains the heat exchanger than the higher heat exchange effect of original heat transfer element.The utility model is unfavorable for discharge opeing and is beneficial to condensing, will be more favourable for evaporimeter under this.It is long-pending to have increased pipe internal surface from structure, makes the flow-disturbing effect more obvious, improves convection transfer rate thus.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is a local pipe internal surface structure expanded view of the present utility model.
Among the figure: H
zRepresent main tooth depth H
fRepresent secondary tooth depth β
zRepresent main tooth helical angle
β
fRepresent secondary tooth pitch angle alpha will
zRepresent main tooth addendum angle α
fRepresent secondary tooth addendum angle
The specific embodiment
Referring to Fig. 1, a kind of intersection teeth inner thread seamless and efficient heat-transfer pipe, main tooth 1 processes the helix that many sliver transvers sections flute profile is triangle (or trapezoidal) tooth, tooth depth H at pipe internal surface
zEquate (or not waiting), be processed with triangle (or trapezoidal) tooth and certain tooth depth H is arranged in main tooth 1 bottom simultaneously
fSecondary tooth 2.The hand of spiral of main Tooth spiral and female tube axis direction left-handed (or dextrorotation) angle β
z=0～40 °; With respect to female tube axis direction, secondary tooth 2 and main tooth 1 same rotation direction (or derotation to).Choose secondary tooth 2 helixangles
f=± 10～80 °, main tooth 1 height H
z=0.1～0.3mm, secondary tooth 2 height H
f=0.03～0.1mm.Main tooth 1 apex angle
z=35～50 °; 1 number n of main tooth
1Article=40～60; Secondary tooth 2 apex angle
f=30～100 °; 2 number n of secondary tooth
2Article=30～50.
Claims (10)
1, a kind of intersection teeth inner thread seamless and efficient heat-transfer pipe is shaped on thread tooth on its pipe internal surface, it is characterized in that being shaped on many screw thread master teeth (1) on the heat-transfer pipe inner surface, and be dextrorotation, the cross section of profile of tooth is that lance tooth, its tooth depth equate; Differing from main tooth (1) hand of spiral, having in main tooth (1) bottom that to be processed into cross section be the triangle profile of tooth, have the secondary tooth (2) that certain altitude equates, and be and pass through mutually with main tooth 1; Main tooth (1) and the structure that secondary tooth (2) can be different lead angles, the hand of spiral is identical; Major and minor tooth is one high and one low, and the central axis face of two flute profiles intersects, the angle β of main Tooth spiral and female tube axis direction
zIt is 0～40 °; Secondary tooth (2) equates that with main tooth (1) pitch secondary tooth (2) is with respect to the angle β of female tube axis direction
fBe ± 10～80 °; Main tooth (1) apex angle
zIt is 20～60 °; Secondary tooth (2) apex angle
fIt is 30～100 °; Main tooth (1) height H
ZBe 0.1～0.3mm, secondary tooth (2) height H
fBe 0.03～0.1mm;
2, seamless and efficient heat-transfer pipe according to claim 1 is characterized in that main tooth spiral bar number is 20～80, and secondary tooth spiral bar number is 20～60;
3, seamless and efficient heat-transfer pipe according to claim 1 is characterized in that main tooth (1) can be a left-hand screw;
4, seamless and efficient heat-transfer pipe according to claim 1 is characterized in that the cross section of main tooth (1) profile of tooth can be a stepped tooth;
5, seamless and efficient heat-transfer pipe according to claim 1, the height that it is characterized in that main tooth (1) can be unequal;
6, seamless and efficient heat-transfer pipe according to claim 1, the cross section profile of tooth that it is characterized in that secondary tooth (2) can be trapezoidal;
7, seamless and efficient heat-transfer pipe according to claim 1, the tooth depth that it is characterized in that secondary tooth (2) can be unequal;
8, seamless and efficient heat-transfer pipe according to claim 1 is characterized in that the pitch of main tooth (1) and secondary tooth (2) can be unequal;
9, seamless and efficient heat-transfer pipe according to claim 1 is characterized in that main tooth (1) and the structure that secondary tooth (2) can be different lead angles, the hand of spiral is identical;
10, seamless and efficient heat-transfer pipe according to claim 1, the teeth inner thread optimal values that it is characterized in that intersecting is: main tooth (1) apex angle
z=35～50 °; Main tooth (1) bar is counted n
1Article=40～60; Secondary tooth (2) apex angle
f=30～100 °; Secondary tooth (2) bar is counted n
2Article=30～50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02237272 CN2548109Y (en) | 2002-06-06 | 2002-06-06 | Cross-teeth thread-inside seamless efficient heat-conductive tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02237272 CN2548109Y (en) | 2002-06-06 | 2002-06-06 | Cross-teeth thread-inside seamless efficient heat-conductive tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2548109Y true CN2548109Y (en) | 2003-04-30 |
Family
ID=33711302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02237272 Expired - Lifetime CN2548109Y (en) | 2002-06-06 | 2002-06-06 | Cross-teeth thread-inside seamless efficient heat-conductive tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2548109Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458348C (en) * | 2005-12-13 | 2009-02-04 | 金龙精密铜管集团股份有限公司 | Efficient heat-exchanging pipe of evaporator for electric refrigerator set |
| CN102679791A (en) * | 2011-03-10 | 2012-09-19 | 卢瓦塔埃斯波公司 | Heat transfer pipe used for heat exchangers |
| CN105202961A (en) * | 2015-10-16 | 2015-12-30 | 苏州新太铜高效管有限公司 | Inner-thread evaporation heat exchange pipe with two sections of different spiral tooth-shaped structures |
| CN110612426A (en) * | 2017-05-12 | 2019-12-24 | 开利公司 | Internally enhanced heat exchanger tube |
| CN111256211A (en) * | 2020-01-20 | 2020-06-09 | 海信（山东）空调有限公司 | Air conditioner |
| CN114688911A (en) * | 2020-12-30 | 2022-07-01 | 广东美的制冷设备有限公司 | Heat exchange tube, heat exchanger and air conditioner |
-
2002
- 2002-06-06 CN CN 02237272 patent/CN2548109Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458348C (en) * | 2005-12-13 | 2009-02-04 | 金龙精密铜管集团股份有限公司 | Efficient heat-exchanging pipe of evaporator for electric refrigerator set |
| CN102679791A (en) * | 2011-03-10 | 2012-09-19 | 卢瓦塔埃斯波公司 | Heat transfer pipe used for heat exchangers |
| CN102679791B (en) * | 2011-03-10 | 2015-09-23 | 卢瓦塔埃斯波公司 | For the heat-transfer pipe of heat exchanger |
| CN105202961A (en) * | 2015-10-16 | 2015-12-30 | 苏州新太铜高效管有限公司 | Inner-thread evaporation heat exchange pipe with two sections of different spiral tooth-shaped structures |
| CN110612426A (en) * | 2017-05-12 | 2019-12-24 | 开利公司 | Internally enhanced heat exchanger tube |
| CN110612426B (en) * | 2017-05-12 | 2022-05-17 | 开利公司 | Heat transfer tube for heating, ventilating, air conditioning and refrigerating system |
| CN111256211A (en) * | 2020-01-20 | 2020-06-09 | 海信（山东）空调有限公司 | Air conditioner |
| CN111256211B (en) * | 2020-01-20 | 2021-11-26 | 海信（山东）空调有限公司 | Air conditioner |
| CN114688911A (en) * | 2020-12-30 | 2022-07-01 | 广东美的制冷设备有限公司 | Heat exchange tube, heat exchanger and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120606 Granted publication date: 20030430 |