CN2240703Y - Petal-shaped straight longitudinal slot pipe - Google Patents
Petal-shaped straight longitudinal slot pipe Download PDFInfo
- Publication number
- CN2240703Y CN2240703Y CN 95234567 CN95234567U CN2240703Y CN 2240703 Y CN2240703 Y CN 2240703Y CN 95234567 CN95234567 CN 95234567 CN 95234567 U CN95234567 U CN 95234567U CN 2240703 Y CN2240703 Y CN 2240703Y
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- CN
- China
- Prior art keywords
- pipe
- wall
- petal
- utility
- longitudinal slot
- 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 - Fee Related
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model relates to a petal-shaped straight longitudinal slot pipe which belongs to a heat transfer pipe in the technical field of heat exchange. The utility model is composed of a pipe body. The utility model is characterized in that the inner and the outer walls of the pipe are provided with straight longitudinal slot veins, the curvature radii of the peaks and the valleys of the straight longitudinal slot veins are the same and are tangential, and the cross section thicknesses of the pipe walls are uniform. The utility model has the advantages of high heat transfer coefficient, thinness of the pipe wall, light weight and pipe material saving, and is an ideal pipe for heat transfer.
Description
The utility model relates to a kind of petal straight pod pipe, belongs to a kind of of heat-transfer pipe, both heat transfers of suitable general refrigeration system, the heat transfer of lithium-bromide absorption-type refrigerating machine preferably.
Existing heat-transfer pipe mainly contains light pipe and finned tube (claiming efficient heat conducting tube again), exists wall thickness, heat transfer efficiency low, the problem of tubing waste.
The purpose of this utility model is to provide a kind of heat transfer coefficient height, and tube wall is thin, lightweight petal straight pod pipe.
Technical solution of the present utility model is, it is made of body, and its special character is, is provided with straight cannelure line on the inside and outside wall of pipe, and the peak of groove line is identical with paddy curvature, and tangent.Wall cross-section thickness uniformity that is to say, the peak of not only managing groove line on the outer wall is identical with paddy curvature and tangent, and the peak of groove line is identical with paddy curvature and tangent on the inside pipe wall, and manage groove line on the inside and outside wall move towards identical.
The radius of curvature R of straight cannelure line peak and paddy is preferably 1-3mm on the described pipe outer wall, and pipe thickness t is preferably 0.6-0.8mm, the tube wall outer diameter D
oBe preferably 16-25mm, the tube wall inside diameter D
iJust can be according to formula D
i=D
oThe relational expression of-2t obtains concrete numerical value.And in case manage radius of curvature R, the pipe thickness t at groove line peak and paddy on the outer wall, inside and outside footpath of tube wall and groove line number determine, just can be by obtain the curvature at straight cannelure line peak and paddy on the inside pipe wall as geometric figure.And produce Fig. 1, product shown in Figure 2 thus.
Because the utility model be provided with petal straight cannelure line, and the curvature of peak and paddy is identical on the pipe inside and outside wall, make the surface tension of peak and paddy help hot transmission, improved the distribution of liquid stream, heat transfer coefficient is obviously improved.Because of managing the effect of the straight cannelure line of inside and outside wall, guarantee the withstand voltage and resistance to bending of tube wall again, alleviated the thickness of tube wall, reduced the weight of pipe.It is compared with light pipe, and heat transfer coefficient can improve 18-20%, pipe thickness attenuate 20-30%, the sub-weight saving 25-40% of every mitron.
Provide embodiment of the present utility model below in conjunction with accompanying drawing, be used for further specifying the utility model.
Fig. 1-front view of the present utility model.
The A of Fig. 2-Fig. 1 is to view.
Embodiment 1, with reference to figure 1, Fig. 2.Body 1 is the bronzing pipe, within it, establish 15 straight cannelures 2 on the outer wall, the peak and the paddy radius of curvature R=2mm of pipe outer wall groove line, wall thickness t-0.6mm, outer diameter D
o=19mm, inside diameter D
i=D
o-2t=19-2 * 0.6=17.8 (mm).Pipe cross section wall thickness uniformity.When should be effective on absorber the time, if velocity in pipes is 1.36m/s, when sprinkle density was 196kg/mh, recording its heat transfer coefficient be 700-850kcal/m
2H ℃, improved 18-20%, the weight ratio same specification light pipe of every mitron alleviates 40%.
Embodiment 3, still with reference to figure 1, Fig. 2.With the difference of embodiment 1 be, the radius of curvature R of pipe outer wall helicla flute line peak and paddy is 1.5mm, and wall thickness t is 0.8mm, the tube wall outer diameter D
oBe 16mm, the tube wall inside diameter D
i=D
o-2t=16-2 * 0.8=14.4 (mm).Straight cannelure line number is 12.Other parts are identical with embodiment 1, and effect heavily alleviates 32% except that every mitron, and other effect is similar.
Claims (2)
1, a kind of petal straight pod pipe, it is made of body, it is characterized in that, is provided with straight cannelure line on the pipe inside and outside wall, and the peak of groove line is identical with paddy curvature, and tangent, wall cross-section thickness uniformity.
By the described petal straight pod pipe of claim 1, it is characterized in that 2, the radius of curvature R of straight cannelure line peak and paddy is 1-3mm on the described pipe outer wall, pipe thickness t is 0.6-0.8mm, the tube wall outer diameter D
oBe 16-25mm, inside diameter D
iBe D
o-2t.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95234567 CN2240703Y (en) | 1995-08-30 | 1995-08-30 | Petal-shaped straight longitudinal slot pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95234567 CN2240703Y (en) | 1995-08-30 | 1995-08-30 | Petal-shaped straight longitudinal slot pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2240703Y true CN2240703Y (en) | 1996-11-20 |
Family
ID=33878466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95234567 Expired - Fee Related CN2240703Y (en) | 1995-08-30 | 1995-08-30 | Petal-shaped straight longitudinal slot pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2240703Y (en) |
-
1995
- 1995-08-30 CN CN 95234567 patent/CN2240703Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |