CN2449841Y - Stage helical internal thread core - Google Patents
Stage helical internal thread core Download PDFInfo
- Publication number
- CN2449841Y CN2449841Y CN 00218793 CN00218793U CN2449841Y CN 2449841 Y CN2449841 Y CN 2449841Y CN 00218793 CN00218793 CN 00218793 CN 00218793 U CN00218793 U CN 00218793U CN 2449841 Y CN2449841 Y CN 2449841Y
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- CN
- China
- Prior art keywords
- utility
- slots
- model
- internal thread
- core print
- Prior art date
- 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
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Abstract
The utility model relates to an internal thread core print with high and low cogs. The utility model comprises a cylindrical core print body 1 and spiral slots which are uniformly distributed and are formed on the surface of the core print body. The utility model is characterized in that the spiral slots are composed of high cog slots 3 and low cog slots 4, wherein the high cog slots and the low cog slots can be arranged at intervals in a staggered way. Compared with a traditional internal thread core print, the utility model having the advantage of reasonable structural design can be used for producing internal thread copper tubes with obvious turbulent current effect and thus the heat exchange effect is enhanced obviously.
Description
The utility model relates to a kind of stage teeth core head, belongs to the inner screw thread copper pipe technical field of mold.
Existing core head is to be processed into equally distributed tens of spiral grooves at its periphery, its gash depth unanimity.Come the machining screw copper pipe with such core print, its copper pipe inner surface has tens of helical tooths highly uniformly, and this internal thread bobbin is compared the heat transfer inner surface area and increased with traditional bare copper tube, certain rate stream effect is arranged, so its heat exchange effect is significantly improved.But along with the continuous progress of science and technology and improving constantly of energy-conserving and environment-protective requirement, refrigeration industry also double thread copper pipe is had higher requirement.
The purpose of this utility model provides a kind of reasonable in design, and its spiral grooves degree of depth is inconsistent, can further improve the stage teeth core head of inner screw thread copper pipe heat exchange effect.
The utility model is the stage teeth core head, comprises cylindrical core print body, offers equally distributed spiral grooves at the core print body surface, it is characterized in that described spiral grooves is made of high teeth groove and low teeth groove.The depth difference of described high teeth groove and low teeth groove is not more than 0.05mm.Described high teeth groove and low teeth groove can be staggered being spaced.Described spiral grooves bottom can be arc transition.
The utility model reasonable in design, its helicla flute is staggered with two kinds of different degree of depth on its periphery, compare with traditional core head, the inner screw thread copper pipe internal surface area of being produced does not change, manufacturing cost does not change, but be staggered because of the tooth depth of inner screw thread copper pipe is divided into stage teeth, so its turbulence effect obviously increases, thereby its heat exchange effect is significantly improved.
Accompanying drawing has been given structural representation of the present utility model.
Fig. 1 is a structure cutaway view of the present utility model;
Fig. 2 is a cross-sectional configuration schematic diagram of the present utility model;
Fig. 3 is an A shown in Figure 2 place structure enlarged drawing.
Below in conjunction with embodiment the utility model is further described.
The utility model mainly comprises cylindrical core print body 1, offer equally distributed spiral grooves 2 on core print body 1 surface, its spiral grooves is made of high teeth groove 3 and low teeth groove 4 respectively, depth difference between the degree of depth h of the depth H of its high teeth groove 3 and low teeth groove 4 is general≤0.05mm, and adding the man-hour channel bottom has transition arc R.The utility model is through overtesting and theoretical validation, and the inner screw thread copper pipe heat exchanger effectiveness of being produced obviously improves.
Claims (4)
1, a kind of stage teeth core head comprises cylindrical core print body (1), offers equally distributed spiral grooves (2) at the core print body surface, it is characterized in that described spiral grooves is made of high teeth groove (3) and low teeth groove (4).
2, by the described stage teeth core head of claim 1, it is characterized in that the depth difference of described high teeth groove (3) and low teeth groove (4) is not more than 0.05mm.
3,, it is characterized in that described high teeth groove and low teeth groove can be staggered being spaced by claim 1 or 2 described stage teeth core heads.
4,, it is characterized in that described spiral grooves bottom can be arc transition by claim 1 or 2 described stage teeth core heads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00218793 CN2449841Y (en) | 2000-08-11 | 2000-08-11 | Stage helical internal thread core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00218793 CN2449841Y (en) | 2000-08-11 | 2000-08-11 | Stage helical internal thread core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2449841Y true CN2449841Y (en) | 2001-09-26 |
Family
ID=33584101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00218793 Expired - Lifetime CN2449841Y (en) | 2000-08-11 | 2000-08-11 | Stage helical internal thread core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2449841Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439902C (en) * | 2005-09-28 | 2008-12-03 | 中国科学院金属研究所 | Non-loss inspecting device and method for precisive pipe internal-threaded core |
| CN101559466B (en) * | 2008-04-17 | 2011-11-16 | 中国电子科技集团公司第二十三研究所 | Design method of corrugating mould of copper pipe with fine pitch and deep helical corrugation |
| CN106141337A (en) * | 2016-08-25 | 2016-11-23 | 广东龙丰精密铜管有限公司 | Core head tooth top circular arc processing method and the equipment realizing the method |
-
2000
- 2000-08-11 CN CN 00218793 patent/CN2449841Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439902C (en) * | 2005-09-28 | 2008-12-03 | 中国科学院金属研究所 | Non-loss inspecting device and method for precisive pipe internal-threaded core |
| CN101559466B (en) * | 2008-04-17 | 2011-11-16 | 中国电子科技集团公司第二十三研究所 | Design method of corrugating mould of copper pipe with fine pitch and deep helical corrugation |
| CN106141337A (en) * | 2016-08-25 | 2016-11-23 | 广东龙丰精密铜管有限公司 | Core head tooth top circular arc processing method and the equipment realizing the method |
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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 |
Owner name: ZHEJIANG HAILIANG CO., LTD. Free format text: FORMER OWNER: HAILIANG COPPER INDUSTRY GROUP CO., LTD., ZHEJIANG Effective date: 20050715 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050715 Address after: 311814, Zhejiang City, Zhuji province shop Town Industrial Zone Patentee after: Zhejiang Hailiang Co., Ltd. Address before: 311814, Meizhou Town, Zhuji, Zhejiang Patentee before: Hailiang Copper Industry Group Co., Ltd., Zhejiang |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010926 |