CN201715914U - Small-diameter internal-thread pipe fitting - Google Patents
Small-diameter internal-thread pipe fitting Download PDFInfo
- Publication number
- CN201715914U CN201715914U CN201020200907XU CN201020200907U CN201715914U CN 201715914 U CN201715914 U CN 201715914U CN 201020200907X U CN201020200907X U CN 201020200907XU CN 201020200907 U CN201020200907 U CN 201020200907U CN 201715914 U CN201715914 U CN 201715914U
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- pipe fitting
- thread
- thread teeth
- degrees
- pipe
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- Expired - Fee Related
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Abstract
The utility model provides a small-diameter internal-thread pipe fitting. Thread teeth (2) ranked equidistantly at a spiral angle Alpha are formed on the inner surface of the pipe fitting (1); the external diameter D of the pipe fitting (1) is 6 plus/minus 0.1 mm; the number (n) of the thread teeth (2) of the pipe fitting (1) is 60 to 80; the spiral angle Alpha of the thread teeth (2) of the pipe fitting (1) is 15 degrees to 25 degrees; the addendum angle Gamma of the thread teeth (2) of the pipe fitting (1) is 25 degrees to 35 degrees; the tooth depth (h) of the thread teeth (2) of the pipe fitting (1) is 0.10 mm to 0.18 mm; and the pipe fitting (1) adopts a copper pipe. The utility model adopts the structure that a large number of thread teeth are ranked equidistantly at a certain spiral angle on the inner surface of the pipe, wherein, the spiral angle is 15 degrees to 25 degrees, and the number of the thread teeth reaches 60 to 80. Compared with the prior art, the structure has a larger designed heat exchange coefficient, so that when serving as a heat exchanger part, the pipe fitting can reduce thread teeth damage in production links such as pipe expansion, and well ensure the heat transfer performance of a heat exchange tube during actual use.
Description
Technical field
The utility model is a kind of small caliber inner screw thread pipe fitting, belongs to the renovation technique of small caliber inner screw thread pipe fitting.
Background technology
Learn that by the heat transfer theory analysis along with the heat exchanger tube tubule is directly changed, the intraductal working medium flow velocity increases, thereby the heat exchange tube tube internal heat exchange coefficient improves.So domestic air conditioning heat exchanger heat exchange tube diameter is begun by 9.52mm, and riches all the way opens up 7.94mm, 7mm, 6.35mm and 5mm.Though produced the littler 5mm riffled tube of caliber, but no matter large-scale application is that 7mm or 5mm pipe internal thread number of teeth amount are few at present, the single tube heat exchange efficiency is not high, and the inboard refrigerant pressure loss of the Tube Sheet of Heat Exchanger of more little caliber is big more, can cause bad influence to the complete machine performance, particularly to the domestic air conditioning evaporation side heat exchange of refrigerant pressure loss sensitivity.A/C evaporator is as another big heat exchanger components, and its continuation miniaturization has significance to the global optimization of air-conditioner.Suitable tubule footpath heat exchanger technology will be achieved this optimization conception, reduces product cost and energy-conserving and environment-protective.
The utility model content
The purpose of this utility model is to consider the problems referred to above and a kind of single tube heat exchange efficiency height is provided, and the not serious small caliber inner screw thread pipe fitting of the refrigerant pressure loss in the pipe.The utility model realizes that consumptive material reduces, and economic environmental protection is reasonable in design, convenient and practical.
The technical solution of the utility model is: small caliber inner screw thread pipe fitting of the present utility model, the inner surface of its pipe fitting are provided with the equidistant thread of arranging with spiral angle α.
The outer diameter D of above-mentioned pipe fitting is 6 ± 0.1mm.
The number of teeth n of the set thread of above-mentioned pipe fitting is 60～80 teeth.
The pitch angle alpha will of the set thread of above-mentioned pipe fitting is 15～25 degree.
The addendum angle γ of the set thread of above-mentioned pipe fitting is 25～35 degree.
The tooth depth h of the set thread of above-mentioned pipe fitting is 0.10～0.18mm.
Above-mentioned pipe fitting is a copper pipe.
The utility model is owing to adopt pipe internal surface to be provided with in a large number structures with the equidistant thread of arranging of certain spiral angle,, wherein helical angle is 15～25 degree, the screw thread number of teeth reaches 60～80 teeth.The utility model compared with prior art, this kind structure has the bigger design coefficient of heat transfer, and when the heat exchanger product, the destruction of having reduced thread in production links such as expand tube can well guarantee the heat exchange property of the actual use of heat exchanger tube.The utility model is that a kind of design is ingenious, function admirable, convenient and practical small caliber inner screw thread pipe fitting.
Description of drawings
Fig. 1 is a front view of the present utility model;
Fig. 2 is a sectional view of the present utility model.
The specific embodiment
Embodiment:
Structural representation of the present utility model as shown in Figure 1, 2, small caliber inner screw thread pipe fitting of the present utility model, the inner surface of its pipe fitting 1 are provided with the equidistant thread of arranging 2 with spiral angle α.In the present embodiment, above-mentioned pipe fitting 1 is a copper pipe.
In the present embodiment, the outer diameter D of above-mentioned pipe fitting 1 is 6 ± 0.1mm.
The number of teeth n of above-mentioned pipe fitting 1 set thread 2 is 60～80 teeth.In the present embodiment, the number of teeth n of pipe fitting 1 set thread 2 is 70 teeth.
The pitch angle alpha will of above-mentioned pipe fitting 1 set thread 2 is 15～25 degree.In the present embodiment, the pitch angle alpha will of pipe fitting 1 set thread 2 is 18 degree.
The addendum angle γ of above-mentioned pipe fitting 1 set thread 2 is 25～35 degree.In the present embodiment, the addendum angle γ of pipe fitting 1 set thread 2 is 30 degree.
The tooth depth h of above-mentioned pipe fitting 1 set thread 2 is 0.10～0.18mm.In the present embodiment, the tooth depth h of pipe fitting 1 set thread 2 is 0.13mm.
In the present embodiment, thread groove bottom width W is 0.096mm, and the copper pipe inner diameter d is 5.3mm, and copper pipe wall thickness T F is 0.22mm.
Claims (7)
1. a small caliber inner screw thread pipe fitting is characterized in that the inner surface of pipe fitting (1) is provided with the equidistant thread of arranging (2) with spiral angle α.
2. small caliber inner screw thread pipe fitting according to claim 1, the outer diameter D that it is characterized in that above-mentioned pipe fitting (1) is 6 ± 0.1mm.
3. small caliber inner screw thread pipe fitting according to claim 1 and 2, the number of teeth n that it is characterized in that the set thread of above-mentioned pipe fitting (1) (2) is 60～80 teeth.
4. small caliber inner screw thread pipe fitting according to claim 3, the pitch angle alpha will that it is characterized in that the set thread of above-mentioned pipe fitting (1) (2) are 15～25 degree.
5. small caliber inner screw thread pipe fitting according to claim 4, the addendum angle γ that it is characterized in that the set thread of above-mentioned pipe fitting (1) (2) are 25～35 degree.
6. small caliber inner screw thread pipe fitting according to claim 5, the tooth depth h that it is characterized in that the set thread of above-mentioned pipe fitting (1) (2) is 0.10～0.18mm.
7. small caliber inner screw thread pipe fitting according to claim 6 is characterized in that above-mentioned pipe fitting (1) is a copper pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020200907XU CN201715914U (en) | 2010-05-18 | 2010-05-18 | Small-diameter internal-thread pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020200907XU CN201715914U (en) | 2010-05-18 | 2010-05-18 | Small-diameter internal-thread pipe fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201715914U true CN201715914U (en) | 2011-01-19 |
Family
ID=43461918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020200907XU Expired - Fee Related CN201715914U (en) | 2010-05-18 | 2010-05-18 | Small-diameter internal-thread pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201715914U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968699A (en) * | 2014-05-21 | 2014-08-06 | 合肥华凌股份有限公司 | Heat exchange tube, evaporator assembly, condenser assembly and refrigeration equipment |
| WO2021057916A1 (en) * | 2019-09-27 | 2021-04-01 | 约克（无锡）空调冷冻设备有限公司 | Heat exchange pipe, heat exchanger and air conditioning system using heat exchanger |
-
2010
- 2010-05-18 CN CN201020200907XU patent/CN201715914U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968699A (en) * | 2014-05-21 | 2014-08-06 | 合肥华凌股份有限公司 | Heat exchange tube, evaporator assembly, condenser assembly and refrigeration equipment |
| CN103968699B (en) * | 2014-05-21 | 2016-08-17 | 合肥华凌股份有限公司 | Heat exchanger tube, evaporator assemblies, condenser assembly and refrigeration plant |
| WO2021057916A1 (en) * | 2019-09-27 | 2021-04-01 | 约克（无锡）空调冷冻设备有限公司 | Heat exchange pipe, heat exchanger and air conditioning system using heat exchanger |
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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: MIDEA GROUP WUHAN REFRIGERATION EQUIPMENT CO., LTD Free format text: FORMER OWNER: MEIDI ELECTRIC APPLIANCES CO., LTD., GUANGDONG Effective date: 20110325 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 528311 PENGLAI ROAD, BEIJIAO, SHUNDE DISTRICT, FOSHAN CITY, GUANGDONG PROVINCE TO: 430056 MIDEA INDUSTRIAL PARK, FENGSHU ROAD 4, WUHAN ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110325 Address after: 430056, Hubei Wuhan economic and Technological Development Zone Maple four road, the United States Industrial Park Patentee after: Wuhan Refrigeration Equipment Co., Ltd. of Midea Group Address before: 528311 Beijiao Road, Shunde District, Guangdong, Foshan, Penglai Patentee before: Meidi Electric Appliances Co., Ltd., Guangdong |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20140518 |