CN104654882B - A kind of asymmetric many flute profiles inner screw thread copper pipe - Google Patents
A kind of asymmetric many flute profiles inner screw thread copper pipe Download PDFInfo
- Publication number
- CN104654882B CN104654882B CN201410839009.1A CN201410839009A CN104654882B CN 104654882 B CN104654882 B CN 104654882B CN 201410839009 A CN201410839009 A CN 201410839009A CN 104654882 B CN104654882 B CN 104654882B
- Authority
- CN
- China
- Prior art keywords
- tooth rib
- tooth
- rib
- copper pipe
- pipe body
- 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.)
- Active
Links
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention relates to inner screw thread copper pipe technical field, disclose a kind of asymmetric many profiles of tooth inner screw thread copper pipe, including copper pipe body, copper pipe body inwall is along the circumferential direction sequentially provided with four groups of tooth ribs in spiral distribution, tooth rib A, tooth rib B, tooth rib a, tooth rib b place cambered surface respectively accounts for 90 ° of central angles, tooth rib A, the rectangular in cross-section structure of tooth rib a, tooth rib B, the cross section of tooth rib b is triangular in shape, the facewidth of tooth rib A is 1:1.5 to 1:2 with the ratio of the facewidth of tooth rib a, tooth rib B is 1:1.5 to 1:2 with the ratio of the addendum angle of tooth rib b, the tooth crest of tooth rib a is provided with the V-shaped groove along tooth rib a distribution, tooth rib b is 1:1.2 to 1:1.5 with the ratio of the tooth pitch of tooth rib B, ratio 1:1.3 to the 1:1.8 of tooth rib A and the tooth pitch of tooth rib a.Therefore, the present invention has can effectively reduce coolant circulating resistance, the beneficial effect of exchange rate between different parts coolant in raising copper pipe body.
Description
Technical field
The present invention relates to heat transmission copper pipe technical field, particularly relate to a kind of asymmetric many flute profiles inner screw thread copper pipe.
Background technology
In air-conditioning in condenser and vaporizer be all to be formed by inner screw thread copper pipe dish system, heat-transfer pipe technical field from
Light pipe is upgraded to inner screw thread copper pipe, is a big technological innovation, and the performance greatly improve air conditioner refrigerating, heating, current is interior
Screw thread copper pipe is typically all single helicla flute or helical tooth, also has many documents or patent to disclose the spiral shell of different cross section shape
Rotation tooth, such as, have M shape, Y shape, trapezoidal, semi-circular teeth, and variously-shaped flute profile is contemplated to nothing but increase heat transfer surface area,
But for inner screw thread copper pipe, it is only that the cross sectional shape changing tooth does not fundamentally increase heat transfer performance, and
The processing of some flute profiles is extremely difficult, and some flute profiles can increase media flow resistance, can bring counter productive, even reduce corrugated tubing
The heat transfer performance of itself.
Chinese patent Authorization Notice No.: CN100365370C, authorized announcement date on January 30th, 2008, discloses in one
Screw-thread heat transfer pipe, its inner surface has helical tooth, and the cross section of helical tooth is Y-shaped, has an opening empty between two adjacent teeth
Chamber, the height of the two side of tooth is equal or unequal, and the Breadth Maximum of adjacent two between cog cavitys is more than the width of cavity, heat-transfer pipe
It is suitable for room air conditioner, is particularly suited for cold-warm type room air conditioner.Its weak point is that Y shape tooth can increase coolant in copper pipe
Circulating resistance, be unfavorable for heat transfer inside and outside copper pipe, coolant is more uniform at copper Bottomhole pressure, and flow-disturbing intensity is little, at copper pipe inwall
Between the coolant in place and copper pipe centre, heat exchange is relatively slow, at copper pipe inwall after coolant and heat exchange with outside with copper pipe center
Coolant formed heat poor, owing to flow-disturbing intensity is little, at copper pipe inwall between coolant and copper pipe centre coolant heat transmit
Slowly, thus cause the internal coolant of copper pipe to decline with the hot heat exchange performance in the external world, reduce the heat exchange performance of heat-transfer pipe.
Summary of the invention
The present invention is to solve that the screw thread of copper pipe inwall of the prior art causes coolant flow resistance to increase, in heat-transfer pipe
The deficiency that different parts coolant exchange rate is low, it is provided that one can effectively reduce coolant circulating resistance, strengthens copper pipe body
Internal flow-disturbing, action of turbulent flow, improve asymmetric many flute profiles inner screw thread copper pipe of copper pipe body internal-external heat exchange speed.
To achieve these goals, the present invention adopts the following technical scheme that
A kind of asymmetric many flute profiles inner screw thread copper pipe, including copper pipe body, described copper pipe body inwall is along the circumferential direction
It is sequentially provided with four groups of tooth ribs in spiral distribution, respectively tooth rib A, tooth rib B, tooth rib a, tooth rib b, the arbitrary cross section of copper pipe body
On, tooth rib A, tooth rib B, tooth rib a, tooth rib b place cambered surface respectively account for 90 ° of central angles, wherein the rectangular in cross-section knot of tooth rib A, tooth rib a
Structure, tooth rib B, tooth rib b cross section triangular in shape, the facewidth of described tooth rib A is 1:1.5 to 1:2 with the ratio of the facewidth of tooth rib a, institute
The ratio stating tooth rib B and the addendum angle of tooth rib b is 1:1.5 to 1:2, and the tooth crest of described tooth rib a is provided with the V along tooth rib a distribution
Shape groove, described tooth rib b is 1:1.2 to 1:1.5 with the ratio of the tooth pitch of tooth rib B, and tooth rib A arrives with the ratio 1:1.3 of the tooth pitch of tooth rib a
1:1.8。
When coolant steam flows in copper pipe body, on the one hand tooth rib increases heat transfer surface area, and tooth rib is to steam simultaneously
There is guiding function so that steam flows along the hand of spiral, four groups of tooth ribs of distribution in copper pipe body, although four groups of tooth ribbed shapes
Difference, but by regulation tooth pitch the surface area ratio at four groups of tooth rib correspondence arc surfaces is closer to, it is ensured that copper pipe inwall with
Between outer wall, heat transfer is uniformly, simultaneously tooth rib A, tooth rib B, tooth rib a, coolant steam is subject in tooth rib b shape difference causes corresponding region
The resistance arrived is different, thus forms four strands of coolant steam, and two strands of coolant steam of arbitrary neighborhood are different by the resistance of tooth rib, phase
Adjacent coolant steam flow rate is different, and four strands of coolant steam streams intersect and interfere and strengthen the flow-disturbing effect of coolant circumference, and copper pipe
Coolant steam at inner body wall is different by tooth rib influence degree from the coolant steam of copper pipe body middle part, i.e. copper pipe body
One coolant steam in centre is affected the least by tooth rib, and flow velocity is more stable, and four strands of coolant steam flow rates about are not
With, thus cause four strands of coolant steam to producing turbulent flow between one middle coolant steam, promote different parts steam it
Between quickly realize heat balance, improve in copper pipe body exchange rate between different parts coolant, it is ensured that copper pipe body inwall
The coolant at place is quick, abundant and the external world carries out heat exchange.
As preferably, the angle β of described tooth rib A, tooth rib B, tooth rib a, tooth rib b and copper pipe body axis is 15 °-45 °.
Angle β then causes too greatly steam resistance big, the least then flow-disturbing poor effect of angle β, and 15 °-45 ° can reach effective flow-disturbing effect
Really, can guarantee that again the resistance of steam stream is moderate.
As preferably, described tooth rib A, tooth rib B, tooth rib a, tooth rib b height of teeth top along identical circumference respectively from first
Bar reduces successively to the last item, and tooth rib A, tooth rib B, tooth rib a, the maximum tooth of tooth rib b are risen identical, tooth rib A, tooth rib B, tooth rib
A, the minimum tooth of tooth rib b are risen the most identical.When coolant flows in copper pipe body, under the effect of tooth rib, produce centrifugal force, tooth
Rib A, tooth rib B, tooth rib a, the height of teeth top of tooth rib b reduce successively, the line of corresponding tooth top be four sections the most concentric with copper pipe body
Circular arc, the guiding function that coolant is had by four arcs, coolant along copper pipe body inwall flow time, it is positioned at arbitrarily angled
Suffered resistance is different from, and can form the steam stream that multiply speed is different in whole copper pipe body, the most dry between air-flow
Relate to formation flow-disturbing, enhance the heat exchange between coolant steam at the internal different spaces of copper pipe body greatly, thus ensure copper
Coolant steam-energy in tube body and the external world carry out heat exchange to greatest extent.
As preferably, described copper pipe body inwall is additionally provided with tooth rib A, tooth rib B, tooth rib a, rib b is oppositely oriented for tooth
Helicla flute.On the one hand helicla flute can effectively reduce the circulating resistance of coolant, on the other hand can reduce copper pipe body inner boundary layer (gas
The coolant of liquid mixed state, liquid refrigerants can under the influence of centrifugal force with copper pipe body inwall laminating formed boundary region) thickness,
Make boundary region more uniform.
As preferably, described helicla flute rises place periphery with maximum tooth in tooth rib A, tooth rib B, tooth rib a, tooth rib b
On the basis of face, to the distance of copper pipe body inwall equal to all tooth depths in tooth rib A, tooth rib B, tooth rib a, tooth rib b bottom helicla flute
Meansigma methods.Due to tooth rib A, tooth rib B, tooth rib a, the height of teeth top difference of tooth rib b, only height of teeth top is more than the tooth rib top of meansigma methods
Portion just can intersect with helicla flute and be cut off by helicla flute, and height of teeth top is big to coolant flow resistance more than the tooth rib of meansigma methods, tooth top
Tall and big tooth rib is big to coolant resistance, and helicla flute can reduce this resistance targetedly, part coolant can carry out at helicla flute across
Tooth rib flows, thus forms some shallow bids adverse current, countercurrently and higher than interfering between the following current at the tooth rib of meansigma methods forms turbulent flow,
Shallow bid adverse current also impact teeth can rise the following current at less than the tooth rib of meansigma methods under the effect of inertia simultaneously, thus in pipe not
Form different azimuth, the flow-disturbing of angle, turbulent flow at co-located, improve greatly between coolant, coolant and extraneous heat exchange effect
Rate.
As preferably, in described copper pipe body, it is additionally provided with expansion tube, is formed between described expansion tube and copper pipe body
Annular chamber, is provided with some independent expansion chambers vertically in described expansion tube.Owing to the coolant in copper pipe body centre needs
To carry out heat exchange by the coolant at inwall and the external world, although this heat exchanger effectiveness is high, but be also less than at inwall cold
Matchmaker directly with the efficiency of heat exchange with outside, therefore center arranges expansion tube so that coolant flows in annular chamber, increase coolant
With extraneous direct heat exchange ability；When high steam flows in copper pipe body, in order to ensure the compressive property of copper pipe body,
The tube wall of common copper pipe is the thickest, and in this structure, expansion tube has the effect alleviating pressure, when annular cavity pressure is excessive,
Expansion chamber can be squeezed, thus plays the effect alleviating super pressure, and therefore the copper pipe body tube wall in this structure is more common
Heat-transfer pipe is thin, the thin path that can reduce heat transfer of tube wall, strengthens the heat exchange inside and outside copper pipe body.
As preferably, the lateral wall of described expansion tube is uniformly provided with some axially distributed raised lines, described raised line
Outward flange undulate vertically distribution.Owing in copper pipe body, coolant upstream end and outlet side exist certain temperature difference, from
And causing the expanded size of expansion chamber there are differences, expansion chamber expanded size dynamically changes, thus to copper pipe body
Interior coolant produces radial pressure, strengthens coolant radially flow-disturbing, and raised line can accelerate the gas heat absorption in expansion chamber, heat release, thus
Strengthen again expansion chamber to expand, shrink the impact on coolant radially flow-disturbing, improve coolant and extraneous heat exchanger effectiveness.
As preferably, the outer position between adjacent two expansion chambers of expansion tube is cased with adapter sleeve, sets outside adapter sleeve
There are some resilient support feet.Expansion tube is outer all arranges adapter sleeve, resilient support foot every a segment distance, it is thus possible to greatest extent
Keep the concentricity of expansion tube and copper pipe body, prevent expansion tube outer wall and copper pipe body contact internal walls.
As preferably, the length that two expansion chambers adjacent in expansion tube are axial.Even if adjacent two expansion chamber weeks
Enclosing temperature identical, but owing to expansion chamber varies in size, after expansion, maximum outside diameter is the most different, the external diameter of whole expansion tube is continuous
Dynamically change, expansion tube different parts is also different to coolant steam action effect radially and dynamically changes, and strengthens greatly
The flow-disturbing of interior coolant steam, turbulent flow effect.
As preferably, described expansion tube is silica gel tube, and described adapter sleeve, resilient support foot are made up of silica gel.Silica gel
Pipe has high temperature resistant, low temperature resistant, aging-resistant performance, and service life is long.
Therefore, the present invention has can effectively reduce coolant circulating resistance, in raising copper pipe body between different parts coolant
The beneficial effect of exchange rate.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is the structural representation of embodiment 2.
Fig. 3 is that in embodiment 2, in copper pipe body, schematic diagram is launched at A-A position.
Fig. 4 is the structural representation of embodiment 3.
Fig. 5 is the sectional side view of embodiment 3.
In figure: copper pipe body 1 tooth rib A2 tooth rib B3 tooth rib a4 tooth rib b5 helicla flute 6 expansion tube 7 annular chamber 8 is swollen
Swollen chamber 9 raised line 10 adapter sleeve 11 flexibly supports foot 12 V-shaped groove 40
Detailed description of the invention
The invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings:
Embodiment 1: one asymmetric many flute profiles inner screw thread copper pipe as shown in Figure 1, including copper pipe body 1, copper pipe body
Inwall is along the circumferential direction sequentially provided with four groups of tooth ribs in spiral distribution, respectively tooth rib A2, tooth rib B3, tooth rib a4, tooth rib b5,
On the arbitrary cross section of copper pipe body, tooth rib A, tooth rib B, tooth rib a, tooth rib b place cambered surface respectively account for 90 ° of central angles, wherein tooth rib A, tooth
The rectangular in cross-section structure of rib a, tooth rib B, tooth rib b cross section triangular in shape, the facewidth of tooth rib A with the ratio of the facewidth of tooth rib a is
1:1.5, the addendum angle of tooth rib B is 1:1.5 with the ratio of the addendum angle of tooth rib b, and tooth rib B, the addendum angle of tooth rib b are fillet, tooth rib
A, tooth rib B, tooth rib a, tooth rib b are 30 ° with the angle β of copper pipe body axis, and the tooth crest of tooth rib a4 is provided with along tooth rib a distribution
V-shaped groove 40, tooth rib b is 1:1.2 with the ratio of the tooth pitch of tooth rib B, the ratio 1:1.3 of tooth rib A and the tooth pitch of tooth rib a.
Embodiment 2: one asymmetric many flute profiles inner screw thread copper pipe as shown in Figure 2, including copper pipe body 1, copper pipe body
Inwall is along the circumferential direction sequentially provided with four groups of tooth ribs in spiral distribution, respectively tooth rib A2, tooth rib B3, tooth rib a4, tooth rib b5,
On the arbitrary cross section of copper pipe body, tooth rib A, tooth rib B, tooth rib a, tooth rib b place cambered surface respectively account for 90 ° of central angles, wherein tooth rib A, tooth
The rectangular in cross-section structure of rib a, tooth rib B, tooth rib b cross section triangular in shape, the facewidth of tooth rib A with the ratio of the facewidth of tooth rib a is
1:1.2, the addendum angle of tooth rib B is 1:2 with the ratio of the addendum angle of tooth rib b, and tooth rib B, the addendum angle of tooth rib b are fillet, tooth rib a4
Tooth crest be provided with the V-shaped groove 40 along tooth rib a distribution, tooth rib b is 1:1.5 with the ratio of the tooth pitch of tooth rib B, tooth rib A and tooth rib a's
The ratio 1:1.8 of tooth pitch；Tooth rib A, tooth rib B, tooth rib a, tooth rib b height of teeth top along identical circumference respectively from Article 1 to last
Bar reduces successively, tooth rib A, tooth rib B, tooth rib a, the maximum tooth of tooth rib b are risen identical, tooth rib A, tooth rib B, tooth rib a, tooth rib b
Minimum tooth is risen the most identical；As it is shown on figure 3, the angle β of tooth rib A, tooth rib B, tooth rib a, tooth rib b and copper pipe body axis is 25 °,
Copper pipe body inwall is additionally provided with and tooth rib A, tooth rib B, tooth rib a, helicla flute 6 oppositely oriented for tooth rib b, and helicla flute is with tooth rib A, tooth
In rib B, tooth rib a, tooth rib b, maximum tooth rises face on the basis of the periphery of place, to the distance of copper pipe body inwall bottom helicla flute
Equal to the meansigma methods of all tooth depths in tooth rib A, tooth rib B, tooth rib a, tooth rib b.
Embodiment 3: one asymmetric many flute profiles inner screw thread copper pipe as shown in Figure 4, including copper pipe body 1, copper pipe body
Inwall is along the circumferential direction sequentially provided with four groups of tooth ribs in spiral distribution, respectively tooth rib A2, tooth rib B3, tooth rib a4, tooth rib b5,
On the arbitrary cross section of copper pipe body, tooth rib A, tooth rib B, tooth rib a, tooth rib b place cambered surface respectively account for 90 ° of central angles, wherein tooth rib A, tooth
The rectangular in cross-section structure of rib a, tooth rib B, tooth rib b cross section triangular in shape, the facewidth of tooth rib A with the ratio of the facewidth of tooth rib a is
1:1.3, the addendum angle of tooth rib B is 1:1.8 with the ratio of the addendum angle of tooth rib b, and tooth rib B, the addendum angle of tooth rib b are fillet, tooth rib
A, tooth rib B, tooth rib a, tooth rib b are 15 ° with the angle β of copper pipe body axis, and the tooth crest of tooth rib a4 is provided with along tooth rib a distribution
V-shaped groove 40, tooth rib b is 1:1.3 with the ratio of the tooth pitch of tooth rib B, the ratio 1:1.5 of tooth rib A and the tooth pitch of tooth rib a；Tooth rib A, tooth rib
B, tooth rib a, the height of teeth top of tooth rib b reduce respectively along identical circumference from Article 1 to the last item successively, tooth rib A, tooth rib B,
Tooth rib a, the maximum tooth of tooth rib b are risen identical, and tooth rib A, tooth rib B, tooth rib a, the minimum tooth of tooth rib b are risen the most identical；Such as Fig. 3 institute
Showing, copper pipe body inwall is additionally provided with and tooth rib A, tooth rib B, tooth rib a, helicla flute 6 oppositely oriented for tooth rib b, and helicla flute is with tooth rib
In A, tooth rib B, tooth rib a, tooth rib b, maximum tooth rises face on the basis of the periphery of place, to copper pipe body inwall bottom helicla flute
Distance is equal to the meansigma methods of all tooth depths in tooth rib A, tooth rib B, tooth rib a, tooth rib b；Expansion tube 7 it is additionally provided with in copper pipe body, swollen
The external diameter of tube expansion is the 1/2 of copper pipe body external diameter, forms annular chamber 8, between expansion tube and copper pipe body in expansion tube vertically
It is provided with some independent expansion chambers 9.
As it is shown in figure 5, be uniformly provided with some axially distributed raised lines 10 on the lateral wall of expansion tube 7, outside raised line 10
The edge distribution of undulate vertically, the length that two expansion chambers adjacent in expansion tube are axial；It is positioned at phase outside expansion tube 6
Position between adjacent two expansion chambers is cased with adapter sleeve 11, is provided with some resilient support feet 12 outside adapter sleeve, flexibly supports foot
Outer end supports with copper pipe body contact internal walls, thus basic guarantee expansion tube and the concentricity of copper pipe body, prevent outside expansion tube
Wall and copper pipe body contact internal walls, expansion tube is silica gel tube, and adapter sleeve, resilient support foot are made up of silica gel.
When in copper pipe body by vapours, expansion chamber expanded by heating, the air pressure in annular chamber can be increased, strengthen copper pipe
The heat exchange of this inside and outside；When the air pressure in annular chamber is the biggest, expansion chamber can compress, thus reduces air pressure in copper pipe body
The pressure of wall, plays a protective role.The axial length of adjacent expansion chamber there are differences, thus after causing finally expanding, whole swollen
On tube expansion, each portion of maximum outside diameter of the position of corresponding expansion chamber is identical, and when coolant flows in copper pipe body, expansion chamber week
The temperature enclosed is constantly generation minor variations, and this expanded size resulting in expansion chamber also can exist dynamically change, expansion chamber
Dynamically change the coolant in annular chamber is radially being produced active force, thus coolant turbulent flow radially in strengthening annular chamber, disturb
Stream, strengthens coolant and extraneous heat exchange.
Therefore, the present invention has can effectively reduce coolant circulating resistance, in raising copper pipe body between different parts coolant
The beneficial effect of exchange rate.
Claims (10)
1. asymmetric many flute profiles inner screw thread copper pipe, including copper pipe body, is characterized in that, described copper pipe body inwall is along circle
Circumferential direction is sequentially provided with four groups of tooth ribs in spiral distribution, and respectively tooth rib A, tooth rib B, tooth rib a, tooth rib b, copper pipe body is arbitrary
On cross section, tooth rib A, tooth rib B, tooth rib a, tooth rib b place cambered surface respectively account for 90 ° of central angles, and wherein tooth rib A, the cross section of tooth rib a are square
Shape structure, tooth rib B, tooth rib b cross section triangular in shape, the facewidth of described tooth rib A is 1:1.5 to 1 with the ratio of the facewidth of tooth rib a:
2, described tooth rib B is 1:1.5 to 1:2 with the ratio of the addendum angle of tooth rib b, and the tooth crest of described tooth rib a is provided with and is distributed along tooth rib a
V-shaped groove, described tooth rib b is 1:1.2 to 1:1.5 with the ratio of the tooth pitch of tooth rib B, the ratio 1 of tooth rib A and the tooth pitch of tooth rib a:
1.3 arrive 1:1.8.
One the most according to claim 1 asymmetric many flute profiles inner screw thread copper pipe, is characterized in that, described tooth rib A, tooth rib
B, tooth rib a, tooth rib b are 15 °-45 ° with the angle β of copper pipe body axis.
One the most according to claim 1 asymmetric many flute profiles inner screw thread copper pipe, is characterized in that, described tooth rib A, tooth rib
B, tooth rib a, the height of teeth top of tooth rib b reduce respectively along identical circumference from Article 1 to the last item successively, tooth rib A, tooth rib B,
Tooth rib a, the maximum tooth of tooth rib b are risen identical, and tooth rib A, tooth rib B, tooth rib a, the minimum tooth of tooth rib b are risen the most identical.
One the most according to claim 3 asymmetric many flute profiles inner screw thread copper pipe, is characterized in that, in described copper pipe body
Wall is additionally provided with and tooth rib A, tooth rib B, tooth rib a, helicla flute oppositely oriented for tooth rib b.
One the most according to claim 4 asymmetric many flute profiles inner screw thread copper pipe, is characterized in that, described helicla flute is with tooth
In rib A, tooth rib B, tooth rib a, tooth rib b, maximum tooth rises face on the basis of the periphery of place, to copper pipe body inwall bottom helicla flute
Distance equal to the meansigma methods of all tooth depths in tooth rib A, tooth rib B, tooth rib a, tooth rib b.
6., according to the one asymmetric many flute profiles inner screw thread copper pipe described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that, described
Copper pipe body in be additionally provided with expansion tube, between described expansion tube and copper pipe body formed annular chamber, in described expansion tube
It is provided with some independent expansion chambers vertically.
One the most according to claim 6 asymmetric many flute profiles inner screw thread copper pipe, is characterized in that, the outside of described expansion tube
Being uniformly provided with some axially distributed raised lines on wall, the outward flange of described raised line undulate vertically is distributed.
One the most according to claim 7 asymmetric many flute profiles inner screw thread copper pipe, is characterized in that, be positioned at adjacent outside expansion tube
Position between two expansion chambers is cased with adapter sleeve, is provided with some resilient support feet outside adapter sleeve.
One the most according to claim 6 asymmetric many flute profiles inner screw thread copper pipe, is characterized in that, in expansion tube adjacent two
The length that individual expansion chamber is axial.
One the most according to claim 8 asymmetric many flute profiles inner screw thread copper pipe, is characterized in that, described expansion tube is
Silica gel tube, described adapter sleeve, resilient support foot are made up of silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839009.1A CN104654882B (en) | 2014-12-30 | 2014-12-30 | A kind of asymmetric many flute profiles inner screw thread copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839009.1A CN104654882B (en) | 2014-12-30 | 2014-12-30 | A kind of asymmetric many flute profiles inner screw thread copper pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104654882A CN104654882A (en) | 2015-05-27 |
| CN104654882B true CN104654882B (en) | 2016-10-05 |
Family
ID=53246296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410839009.1A Active CN104654882B (en) | 2014-12-30 | 2014-12-30 | A kind of asymmetric many flute profiles inner screw thread copper pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104654882B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5704424A (en) * | 1995-10-19 | 1998-01-06 | Mitsubishi Shindowh Co., Ltd. | Heat transfer tube having grooved inner surface and production method therefor |
| JP4294183B2 (en) * | 1999-11-08 | 2009-07-08 | 住友軽金属工業株式会社 | Internal grooved heat transfer tube |
| CN2742369Y (en) * | 2004-04-25 | 2005-11-23 | 吴家伟 | Inner ribbed tube for condenser or evaporator |
-
2014
- 2014-12-30 CN CN201410839009.1A patent/CN104654882B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104654882A (en) | 2015-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104654886B (en) | A kind of female thread heat transmission copper pipe | |
| CN107869847A (en) | A kind of heat converter structure | |
| CN104654881B (en) | A kind of lightweight efficient heat transfer copper pipe | |
| CN104654884B (en) | A kind of inner screw thread copper pipe structure | |
| CN204388681U (en) | Combination flute profile heat exchanging copper pipe | |
| CN204388682U (en) | Seamless internal thread heat transmission copper pipe | |
| CN104654882B (en) | A kind of asymmetric many flute profiles inner screw thread copper pipe | |
| CN204388676U (en) | Heat exchanging copper pipe structure | |
| CN204388677U (en) | Heat exchanger screw-thread heat transfer pipe | |
| CN204388678U (en) | For the inner screw thread copper pipe of heat exchange | |
| CN104654887B (en) | A kind of composite tooth-shape efficient heat transfer copper pipe | |
| CN204388679U (en) | Combination flute profile inner screw thread copper pipe | |
| CN104654880B (en) | A kind of heat exchanger screw-thread heat transfer pipe | |
| CN104654885B (en) | A kind of heat exchanging copper pipe structure | |
| CN104654879B (en) | A kind of combination flute profile heat exchanging copper pipe | |
| CN204388680U (en) | inner screw thread copper pipe structure | |
| CN104654883B (en) | A kind of combination flute profile inner screw thread copper pipe | |
| CN204388683U (en) | The multiple tooth type inner screw thread copper pipe of lightweight | |
| CN104654888B (en) | A kind of seamless female thread heat transmission copper pipe | |
| CN205300356U (en) | Heat exchange copper pipe | |
| CN204461181U (en) | Multiple tooth type High Efficency Heat Exchanging Copper Tube structure | |
| CN205373152U (en) | Combined heat exchange copper pipe | |
| CN204388675U (en) | Efficient heat transfer copper pipe | |
| CN205300350U (en) | Combined internal thread copper pipe | |
| CN207832005U (en) | Falling film heat transfer pipe and its arrangement in heat exchanger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |