CN2548108Y - Small-diameter internal thread copper pipe for heat exchanger - Google Patents
Small-diameter internal thread copper pipe for heat exchanger Download PDFInfo
- Publication number
- CN2548108Y CN2548108Y CN 02237271 CN02237271U CN2548108Y CN 2548108 Y CN2548108 Y CN 2548108Y CN 02237271 CN02237271 CN 02237271 CN 02237271 U CN02237271 U CN 02237271U CN 2548108 Y CN2548108 Y CN 2548108Y
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- CN
- China
- Prior art keywords
- tooth
- copper pipe
- screw thread
- thin
- angle
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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.)
- Expired - Lifetime
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 26
- 239000010949 copper Substances 0.000 title claims abstract description 26
- 238000002156 mixing Methods 0.000 claims description 10
- 230000007704 transition Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
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Abstract
The utility model provides a thin-diameter internal thread copper pipe for a heat exchanger, which is characterized in that a plurality of internal threads are manufactured on the inner surface of a pipe fitting with the outer diameter phi of 4-phi 6.35mm, the tooth form of the cross section of the internal threads is slightly triangular, and the tooth space is formed by connecting the tooth form of the slightly inverted trapezoidal tooth groove bottom; the tooth top is in the form of a circular arc R1The curved surface is formed by transition, and the transition position of the tooth bottom is an arc R2And (4) forming curved surface transition. The structure is used as an air conditioner and a refrigerating piece, reduces the destructiveness caused by stress concentration of the original technical product at the position, has larger heat exchange coefficient, prolongs the service life, improves the pressure bearing capacity of the thin tube, adapts to the requirement of high pressure resistance, and saves materials.
Description
Technical field
The utility model relates to a kind of inner at pipe, as to adopt increase heat-transfer area structure pipe fitting, specifically a kind of thin caliber inner screw thread copper pipe that is used for heat exchanger.
Background technology
At present, be according to the technology that has earlier, to external diameter φ 7～φ 10mm pipe fitting commonly used, make pipe internal thread, multiple version product, make it in being disposed at refrigeration and air-conditioning equipment, significantly improved its overall performance.Occurred requiring riffled tube to have the trend of high tooth, thin-walled, and the inner screw thread copper pipe of crooked big external diameter, its bending radius is limited thereupon, causes the copper pipe arrangement space size can not be too little, thereby has limited refrigeration, air-condition heat exchanger can not be done very for a short time.Moreover larger-diameter attenuate inner screw thread copper pipe on original bending radius, very easily produces manufacturing deficiencies such as wrinkling, flat tube, dead pleat, cracking.In addition, in the bloated expander process in evaporimeter, condenser production process, attenuate than the large diameter and inner thread copper pipe, longitudinal crack and enlarging also can occur and defective such as split, cause the processing percent defective to raise, increased the processing and manufacturing cost.
Summary of the invention
The utility model is in order to overcome above-mentioned technical deficiency part, and provides a kind of at present domestic that do not produce as yet and use, external diameter less than the following inner screw thread copper pipe of φ 7mm.The thin caliber inner screw thread copper pipe that is used for heat exchanger, be shaped on the internal thread that multi-ribbon has helical angle at the thin diameter tube inner surface, the external diameter φ 4～φ 6.35mm that it is characterized in that thin footpath copper pipe, the profile of tooth of its internal thread cross section is slightly triangular in shape and slightly be down trapezoidal gullet base Colaesce and constitute tooth pitch; At tooth top is with circular arc R
1Surface blending is shaped, and switching place is with circular arc R at the bottom of the tooth
2Surface blending constitutes; Screw thread bar number is n=30～40; Lead angle β=4～20 ° be dextrorotation to or left-handed to, tooth depth H
f=0.10～0.18mm, addendum angle α=35～55 °, the addendum angle place is with arc radius R
1=0.03～0.05mm surface blending, switching place is with arc radius R at the bottom of the tooth
2=0.03～0.06mm surface blending; The thick T of bottom land width place copper pipe diapire
w=0.18～0.28mm.
The utility model is in the edged surface junction, tooth top and position, tooth bottom are made into circular arc camber transition structure form, reduced the stress at this place and concentrated, also just reduced, prolonged effect the service life that obtains this kind inner screw thread copper pipe because stress is concentrated the destruction that is caused.Thin diameter tube can improve its bearing capacity, is suitable for the novel environment-friendly refrigerant requirement high to the pipeline resistance to pressure; Making radius bend degree is diminished, under the situation that does not change the heat exchange amount, can reduce the heat exchanger size effectively; And the inner screw thread copper pipe in thin footpath, having the bigger coefficient of heat transfer, when making it to be used as the evaporimeter of air-conditioning, refrigeration, its advantage is particularly showing.Because the inner screw thread copper pipe in thin footpath has higher bearing capacity, like this, adopt thin wall thickness, just can satisfy original instructions for use, promptly more save materials than the above copper pipe of conventional φ 7mm.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the utility model straight tube section enlarged diagram.
Fig. 2 is a riffled tube profile of tooth cross section partial enlarged drawing of the present utility model.
Among the figure: H
fOn behalf of the screw thread tooth bar, the lead angle n of tooth count R to represent tooth depth α to represent addendum angle β to represent vertically
1Represent tooth top arc radius surface blending R
2Represent corner arc radius surface blending T at the bottom of the tooth
wRepresent bottom land width place copper pipe diapire thick
The specific embodiment
Referring to Fig. 1,2, be used for the thin caliber inner screw thread copper pipe of heat exchanger, its cross section profile of tooth is slightly triangular in shape and slightly be down trapezoidal teeth groove basal commissure formation tooth pitch, and tooth top is with R
1The circular arc camber transition, switching is with R at the bottom of the tooth
2The circular arc camber transition.
Embodiment 1, when when selected external diameter is φ 5mm, adopt the screw thread bar to count the n=40 bar, lead angle β=18 °, tooth depth H
f=0.16mm, addendum angle α=40 °, R
1=0.05mm, R
2=0.04mm; The thick T of diapire
w=0.20mm
Embodiment 2, when when selected external diameter is φ 6.35mm, adopt the screw thread bar to count the n=55 bar, lead angle β=10 °, tooth depth H
f=0.18mm, addendum angle α=40 °, R
1=0.04mm, R
2=0.04mm; The thick T of diapire
w=0.25mm.
Draw out the inner screw thread copper pipe of thin-walled, thin footpath, high tooth by spinning,, improved the heat exchange effect, dwindled heat exchanger volume having increased the adaptability of evaporimeter, condenser manufacturing process greatly.Thin caliber inner screw thread copper pipe, its every meter weight has only 33 grams, and is lighter about half than conventional φ 7mm inner screw thread copper pipe, therefore uses the utility model can more save material.It is littler that the size of bending radius can become, and is being that 1.5～2 times of external diameter values are calculated by bending radius, and its bulk can reduce 10～30%.Implement its feature of test, occupied justifiable advantage.
Claims (4)
1, a kind of thin caliber inner screw thread copper pipe that is used for heat exchanger, be shaped on the internal thread that multi-ribbon has helical angle at the thin diameter tube inner surface, the external diameter φ 4～φ 6.35mm that it is characterized in that thin footpath copper pipe, the profile of tooth of its internal thread cross section is slightly triangular in shape and slightly be down trapezoidal gullet base Colaesce and constitute tooth pitch; At tooth top is with circular arc R
1Surface blending is shaped, and switching place is with circular arc R at the bottom of the tooth
2Surface blending constitutes;
2, thin caliber inner screw thread copper pipe according to claim 1 is characterized in that screw thread bar number is n=30～40, lead angle β=4～20 ° be dextrorotation to or left-handed to, tooth depth H
f=0.10～0.18mm, addendum angle α=35～55 °, the addendum angle place is with arc radius R
1=0.03～0.05mm surface blending, switching place is with arc radius R at the bottom of the tooth
2=0.03～0.06mm surface blending;
3, thin caliber inner screw thread copper pipe according to claim 1 is characterized in that when when selected external diameter is φ 5mm, adopts the screw thread bar to count the n=40 bar, lead angle β=18 °, tooth depth H
f=0.16mm, addendum angle α=40 °, R
1=0.05mm, R
2=0.04mm, the thick T of diapire
w=0.20mm,
4, thin caliber inner screw thread copper pipe according to claim 1 is characterized in that when when selected external diameter is φ 6.35mm, adopts the screw thread bar to count the n=55 bar, lead angle β=10 °, tooth depth H
f=0.18mm, addendum angle α=40 °, R
1=0.04mm, R
2=0.04mm; The thick T of diapire
w=0.25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02237271 CN2548108Y (en) | 2002-06-06 | 2002-06-06 | Small-diameter internal thread copper pipe for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02237271 CN2548108Y (en) | 2002-06-06 | 2002-06-06 | Small-diameter internal thread copper pipe for heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2548108Y true CN2548108Y (en) | 2003-04-30 |
Family
ID=33711301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02237271 Expired - Lifetime CN2548108Y (en) | 2002-06-06 | 2002-06-06 | Small-diameter internal thread copper pipe for heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2548108Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453272C (en) * | 2006-07-21 | 2009-01-21 | 浙江海亮股份有限公司 | Curved addendum polishing process with gullet mold |
| CN102716936A (en) * | 2012-05-03 | 2012-10-10 | 张起成 | Method for producing internal screw thread aluminum pipe for heat exchanging |
| CN103471442A (en) * | 2013-09-29 | 2013-12-25 | 江苏创兰太阳能空调有限公司 | Copper coil pipe for solar air conditioner |
-
2002
- 2002-06-06 CN CN 02237271 patent/CN2548108Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453272C (en) * | 2006-07-21 | 2009-01-21 | 浙江海亮股份有限公司 | Curved addendum polishing process with gullet mold |
| CN102716936A (en) * | 2012-05-03 | 2012-10-10 | 张起成 | Method for producing internal screw thread aluminum pipe for heat exchanging |
| CN103471442A (en) * | 2013-09-29 | 2013-12-25 | 江苏创兰太阳能空调有限公司 | Copper coil pipe for solar air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: RESEARCH CENTER OF PRECISE COPPER PIPE ENGINEERING, CHINESE ACADEMY OF SCIENCES |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: JINLONG PRECISION COPPER TUBE GROUP CO., LTD. Free format text: FORMER NAME: HENAN JINLONG PRECISE COPPER PIPE CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 453000 No. 191 Renmin West Road, Henan, Xinxiang Co-patentee after: Precise Copper Pipe Engineering Research Center, Chinese Academy of Sciences Patentee after: GOLDEN DRAGON PRECISE COPPER TUBE Group Inc. Address before: 453000 No. 2 Xin Lu, Xinxiang, Henan Co-patentee before: Precise Copper Pipe Engineering Research Center, Chinese Academy of Sciences Patentee before: JINLONG PREC COPPER PIPE Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101102 Address after: 453000 No. 191 Renmin West Road, Henan, Xinxiang Patentee after: GOLDEN DRAGON PRECISE COPPER TUBE Group Inc. Address before: 453000 No. 191 Renmin West Road, Henan, Xinxiang Co-patentee before: Precise Copper Pipe Engineering Research Center, Chinese Academy of Sciences Patentee before: GOLDEN DRAGON PRECISE COPPER TUBE Group Inc. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120606 Granted publication date: 20030430 |