CN205300355U - Combined copper pipe - Google Patents
Combined copper pipe Download PDFInfo
- Publication number
- CN205300355U CN205300355U CN201521137070.8U CN201521137070U CN205300355U CN 205300355 U CN205300355 U CN 205300355U CN 201521137070 U CN201521137070 U CN 201521137070U CN 205300355 U CN205300355 U CN 205300355U
- Authority
- CN
- China
- Prior art keywords
- raised line
- copper pipe
- section
- copper
- sand grip
- 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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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 121
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 121
- 239000010949 copper Substances 0.000 title claims abstract description 121
- 238000000034 method Methods 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 239000004576 sand Substances 0.000 abstract 8
- 230000004323 axial length Effects 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 55
- 238000012546 transfer Methods 0.000 description 14
- 238000005057 refrigeration Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a combined copper pipe, include a plurality of first copper pipeline sections of section and locate a plurality of sections second copper pipeline sections between the adjacent first copper pipeline section respectively, first copper pipeline section transversal is personally submitted circularly, the inner wall of first copper pipeline section is equipped with sand grip A, sand grip B and the sand grip C that three groups are helical extension along the circumferencial direction in proper order, and the cambered surface and 120 central angles at every group sand grip place are corresponding, and the tooth depth of every group sand grip all is normal distribution, and sand grip A, sand grip B and sand grip C and copper pipe cross section radius's contained angle beta is all in interval [ 15, 15 ], the inner wall of second copper pipeline section is smooth, first copper pipeline section compares for 8 along the axial length of copper pipe with adjacent second copper pipeline section: 1 to 10: 1. The utility model has the characteristics of effectively reduce the circulation resistance of refrigerant, improved the heat exchange speed between the intraductal different positions condensing agent of copper to the intraductal outer heat exchange speed of copper has been improved.
Description
Technical field
This utility model relates to heat transmission copper pipe technical field, particularly relates to one and can effectively reduce coolant circulating resistance, improves the combined copper pipe of copper pipe internal-external heat exchange speed.
Background technology
Development along with science and technology, the raising of people's living standard, air-conditioning more and more becomes the necessary in people's daily life, the power consumption proportion of air-conditioning is also increasing, and the radiating efficiency of the power consumption of air-conditioning and condenser has close ties, existing air-conditioning is generally all adopt smooth inner wall copper pipe or riffled tube, and the heat transfer area of light pipe is smaller, the heat transfer efficiency causing smooth inner wall copper pipe is low, inner screw thread copper pipe is owing to being have spiral helicine internal tooth or straight-tooth, increase the heat transfer area of copper pipe, but internal tooth or straight-tooth likely can increase the flow resistance of medium, counter productive can be brought.
Owing to existing internal tooth generally has angular structures, in copper pipe tube expansion process, these corner angle are easily deformed, and in bend pipe process, these structures are also easily deformed, once deformation, the heat transfer efficiency of female thread or straight-tooth is substantially reduced, be also possible to increase heat transfer resistance, and when operation of air conditioner, due in cold-producing medium dissolved with refrigeration oil, and angular tooth block easily punctures liquid film and oil film, cause refrigeration oil to accumulate in angular groove, not easily taken out of by the refrigeration oil at top or cold-producing medium, considerably increase heat transfer resistance.
Chinese patent Authorization Notice No.: CN100365370C, authorized announcement date on January 30th, 2008, disclose a kind of female screw heat-transfer pipe, having helical tooth on its inner surface, the cross section of helical tooth is Y-shaped, has an open cavity between two adjacent teeth, the height of the two side of tooth is equal or unequal, the Breadth Maximum of adjacent two between cog cavitys is more than the width of cavity, and heat-transfer pipe is suitable for room, an air-conditioner, is particularly suited for cold dim type room air conditioner. Its weak point is that Y shape tooth can increase coolant circulating resistance in copper pipe, the transmission that is unfavorable in copper pipe exterior-heat, coolant is more uniform at copper Bottomhole pressure, flow-disturbing intensity is little, between the coolant in copper pipe inwall place and copper pipe centre, heat exchange is relatively slow, thus causing the internal coolant of copper pipe and heat exchange with outside hydraulic performance decline.
Summary of the invention
Goal of the invention of the present utility model is to overcome the screw thread of copper pipe inwall of the prior art to cause that coolant flow resistance increases, the deficiency that in heat-transfer pipe, different parts coolant exchange rate is low, provide one and can effectively reduce coolant circulating resistance, improve the combined copper pipe of copper pipe internal-external heat exchange speed.
To achieve these goals, this utility model adopts the following technical scheme that
A kind of combined copper pipe, including some sections of the first copper pipe sections and some sections of the second copper pipe sections being respectively arranged between adjacent first copper pipe section; The circular in cross-section of described first copper pipe section, the inwall of described first copper pipe section is along the circumferential direction sequentially provided with three groups of the raised line A extended in the shape of a spiral, raised line B and raised line C, the cambered surface often organizing raised line place is corresponding with 120 �� of central angles, often organize the tooth depth of raised line all in normal distribution, the angle �� of raised line A, raised line B and raised line C and copper pipe cross sectional radius is all in interval [-15 ��, 15 ��]; The inwall of described second copper pipe section is smooth; Described first copper pipe section is 8:1 to 10:1 with the second adjacent copper pipe section along the length ratio that copper pipe is axial.
Coolant steam is when copper Bottomhole pressure, raised line increases heat transfer surface area on the one hand, steam is had guiding function by raised line simultaneously, steam is flowed along the hand of spiral, first copper pipe section inwall is distributed three groups of raised lines, on arbitrary cross section of copper pipe, the cambered surface often organizing raised line place accounts for 120 �� of central angles, the tooth depth often organizing raised line is normal distribution, raised line A simultaneously, raised line B, raised line C-shape difference causes that the resistance that in corresponding region, coolant steam is subject to is different, thus forming multiply coolant steam, the resistance that two strands of coolant steam of arbitrary neighborhood are subject to raised line is different, adjacent coolant steam flow rate is different, multiply coolant steam stream intersects and interferes and strengthen the flow-disturbing effect that coolant is circumferential, and the coolant steam at copper pipe inwall place is different by raised line influence degree from the coolant steam of copper pipe middle part, namely one coolant steam in copper pipe centre is affected only small by raised line, flow velocity is more stable, and multiply coolant steam flow rate difference about, thus cause that multiply coolant steam is to producing turbulent flow between one middle coolant steam, promote quickly to realize between different parts steam heat balance, exchange rate between different parts coolant in raising copper pipe, ensure that the coolant at copper pipe inwall place is quick, abundant and the external world carries out heat exchange.
Second copper pipe section inner wall smooth, it is ensured that after bending, does not have tooth block and punctures liquid film and oil film, causes refrigeration oil to accumulate in angular groove, is not easily taken out of by the refrigeration oil at top or cold-producing medium, the problem considerably increasing heat transfer resistance; Simultaneously, it is possible to make coolant steam enter the second copper pipe section from the first copper pipe section, and produce different twice changes when being again introduced into next section the first copper pipe section, there is flow-disturbing effect, advantageously in heat exchange.
As preferably, described raised line A, raised line B, the cross section respectively rectangle of raised line C, M shape and triangle, the addendum angle of raised line C is ��, described raised line A, raised line B, raised line C addendum angle be fillet. Raised line A, raised line B, raised line C shape different, the resistance that in corresponding region, coolant steam is subject to is different, thus forming multiply coolant steam; And raised line addendum angle is fillet, does not have tooth block and puncture liquid film and oil film, cause refrigeration oil to accumulate in angular groove, not easily taken out of by the refrigeration oil at top or cold-producing medium, the problem considerably increasing heat transfer resistance
As preferably, described raised line A, raised line B, raised line C the facewidth identical, the ratio of the space width of raised line and the facewidth is 0.8:1 to 1.2:1.
Coolant is when copper Bottomhole pressure, centrifugal force is produced under the effect of raised line, raised line A, raised line B, raised line C tooth depth different, the facewidth is identical, space width is different, can form the steam stream that multiply speed is different, interfere formation flow-disturbing between air-flow in whole copper pipe, enhance the heat exchange between copper pipe internal different spaces place coolant steam greatly, thus the coolant steam-energy ensured in copper pipe and the external world carry out heat exchange to greatest extent.
As preferably, the angle �� value of adjacent raised line is a positive negative opposite number angle.
As preferably, the inwall of described first copper pipe section is additionally provided with the raised line D oppositely oriented with raised line A, raised line B and raised line C.
As preferably, the cross section of described raised line D is trapezoidal, described raised line D respectively intersect with raised line A, raised line B, raised line C place the cross section respectively raised line A of raised line, raised line B, raised line C shape, the tooth depth of raised line D is equal to the half of the meansigma methods of all tooth depths in raised line A, raised line B, raised line C, the facewidth of raised line D is equal to the half of the meansigma methods of all facewidth in raised line A, raised line B, raised line C, and the ratio of the space width of raised line D and the facewidth is 1:1 to 2:1.
Oppositely oriented raised line D makes the change multiformity more of coolant steam stream, be conducive to being formed in whole copper pipe the coolant steam stream that multiply speed is different, formation flow-disturbing is interfered between air-flow, enhance the heat exchange between copper pipe internal different spaces place coolant steam greatly, thus the coolant steam-energy ensured in copper pipe and the external world carry out heat exchange to greatest extent.
Therefore, this utility model has the advantages that the circulating resistance effectively reducing coolant, improves the exchange rate between different parts condensing agent in copper pipe, thus improve the exchange rate inside and outside copper pipe.
Accompanying drawing explanation
Fig. 1 is a kind of cross-sectional structure schematic diagram of the first copper pipe section of the present utility model.
Fig. 2 is a kind of sectional view of the present utility model.
In figure: first copper pipe section the 1, second copper pipe section 2, raised line A3, raised line B4, raised line C5, raised line D6.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is further described:
The combined copper pipe of one as shown in Figure 1 and Figure 2, including some sections of the first copper pipe sections 1 and some sections of the second copper pipe sections 2 being respectively arranged between adjacent first copper pipe section; The circular in cross-section of described first copper pipe section, the inwall of described first copper pipe section is along the circumferential direction sequentially provided with three groups of the raised line A3 extended in the shape of a spiral, raised line B4 and raised line C5, the cambered surface often organizing raised line place is corresponding with 120 �� of central angles, often organize the tooth depth of raised line all in normal distribution, the angle �� of raised line A, raised line B and raised line C and copper pipe cross sectional radius is all in interval [-15 ��, 15 ��]; The inwall of described second copper pipe section is smooth; Described first copper pipe section is 8:1 to 10:1 with the second adjacent copper pipe section along the length ratio that copper pipe is axial; Described raised line A, raised line B, the cross section respectively rectangle of raised line C, M shape and triangle, the addendum angle of raised line C is ��, described raised line A, raised line B, raised line C addendum angle be fillet; Described raised line A, raised line B, raised line C the facewidth identical, the ratio of the space width of raised line and the facewidth is 0.8:1 to 1.2:1; The angle �� value of adjacent raised line is a positive negative opposite number angle; The inwall of described first copper pipe section is additionally provided with the raised line D6 oppositely oriented with raised line A, raised line B and raised line C; The cross section of described raised line D is trapezoidal, described raised line D respectively intersect with raised line A, raised line B, raised line C place the cross section respectively raised line A of raised line, raised line B, raised line C shape, the tooth depth of raised line D is equal to the half of the meansigma methods of all tooth depths in raised line A, raised line B, raised line C, the facewidth of raised line D is equal to the half of the meansigma methods of all facewidth in raised line A, raised line B, raised line C, and the ratio of the space width of raised line D and the facewidth is 1:1 to 2:1.
The external diameter of copper pipe is 7mm, and the tolerance of its external diameter is �� 0.06mm;
The internal diameter of copper pipe is 6.26mm, and the tolerance of its internal diameter is �� 0.04mm;
The diapire thickness of copper pipe is 0.23mm, and the tolerance that its diapire is thick is �� 0.04mm;
The number of teeth on the inner tubal wall circumference of copper pipe is 60;
The weight of the unit length of copper pipe is 48g/m, and the tolerance of the weight of its unit length is �� 5g/m.
The inwall of described first copper pipe section is additionally provided with the helicla flute identical with raised line D rotation direction; Described helicla flute and raised line D are spaced; Described helicla flute rises place periphery for datum level with maximum tooth in tooth rib A, tooth rib B, is equal to the meansigma methods of tooth rib A, all tooth depths of tooth rib B bottom helicla flute to the distance of copper pipe body inwall.
Coolant steam is when copper Bottomhole pressure, raised line increases heat transfer surface area on the one hand, steam is had guiding function by raised line simultaneously, steam is flowed along the hand of spiral, first copper pipe section inwall is distributed three groups of raised lines, on arbitrary cross section of copper pipe, the cambered surface often organizing raised line place accounts for 120 �� of central angles, the tooth depth often organizing raised line is normal distribution, raised line A simultaneously, raised line B, raised line C-shape difference causes that the resistance that in corresponding region, coolant steam is subject to is different, thus forming multiply coolant steam, the resistance that two strands of coolant steam of arbitrary neighborhood are subject to raised line is different, adjacent coolant steam flow rate is different, multiply coolant steam stream intersects and interferes and strengthen the flow-disturbing effect that coolant is circumferential, and the coolant steam at copper pipe inwall place is different by raised line influence degree from the coolant steam of copper pipe middle part, namely one coolant steam in copper pipe centre is affected only small by raised line, flow velocity is more stable, and multiply coolant steam flow rate difference about, thus cause that multiply coolant steam is to producing turbulent flow between one middle coolant steam, promote quickly to realize between different parts steam heat balance, exchange rate between different parts coolant in raising copper pipe, ensure that the coolant at copper pipe inwall place is quick, abundant and the external world carries out heat exchange.
Second copper pipe section inner wall smooth, it is ensured that after bending, does not have tooth block and punctures liquid film and oil film, causes refrigeration oil to accumulate in angular groove, is not easily taken out of by the refrigeration oil at top or cold-producing medium, the problem considerably increasing heat transfer resistance; Simultaneously, it is possible to make coolant steam enter the second copper pipe section from the first copper pipe section, and produce different twice changes when being again introduced into next section the first copper pipe section, there is flow-disturbing effect, advantageously in heat exchange.
Oppositely oriented raised line D makes the change multiformity more of coolant steam stream, be conducive to being formed in whole copper pipe the coolant steam stream that multiply speed is different, formation flow-disturbing is interfered between air-flow, enhance the heat exchange between copper pipe internal different spaces place coolant steam greatly, thus the coolant steam-energy ensured in copper pipe and the external world carry out heat exchange to greatest extent.
Therefore, this utility model has the circulating resistance effectively reducing coolant, improves the exchange rate between different parts condensing agent in copper pipe, thus improve the beneficial effect of exchange rate inside and outside copper pipe.
Should be understood that the present embodiment is merely to illustrate this utility model rather than limits scope of the present utility model. In addition, it is to be understood that after having read the content that this utility model is lectured, this utility model can be made various changes or modifications by those skilled in the art, and these equivalent form of values fall within the application appended claims limited range equally.
Claims (6)
1. a combined copper pipe, is characterized in that, including some sections of the first copper pipe sections and some sections of the second copper pipe sections being respectively arranged between adjacent first copper pipe section; The circular in cross-section of described first copper pipe section, the inwall of described first copper pipe section is along the circumferential direction sequentially provided with three groups of the raised line A extended in the shape of a spiral, raised line B and raised line C, the cambered surface often organizing raised line place is corresponding with 120 �� of central angles, often organize the tooth depth of raised line all in normal distribution, the angle �� of raised line A, raised line B and raised line C and copper pipe cross sectional radius is all in interval [-15 ��, 15 ��]; The inwall of described second copper pipe section is smooth; Described first copper pipe section is 8:1 to 10:1 with the second adjacent copper pipe section along the length ratio that copper pipe is axial.
2. combined copper pipe according to claim 1, is characterized in that, described raised line A, raised line B, the cross section respectively rectangle of raised line C, M shape and triangle, and the addendum angle of raised line C is ��, described raised line A, raised line B, raised line C addendum angle be fillet.
3. combined copper pipe according to claim 1, is characterized in that, described raised line A, raised line B, raised line C the facewidth identical, the ratio of the space width of raised line and the facewidth is 0.8:1 to 1.2:1.
4. combined copper pipe according to claim 1, is characterized in that, the angle �� value of adjacent raised line is a positive negative opposite number angle.
5. combined copper pipe according to claim 1, is characterized in that, the inwall of described first copper pipe section is additionally provided with the raised line D oppositely oriented with raised line A, raised line B and raised line C.
6. combined copper pipe according to claim 5, it is characterized in that, the cross section of described raised line D is trapezoidal, described raised line D respectively intersect with raised line A, raised line B, raised line C place the cross section respectively raised line A of raised line, raised line B, raised line C shape, the tooth depth of raised line D is equal to the half of the meansigma methods of all tooth depths in raised line A, raised line B, raised line C, the facewidth of raised line D is equal to the half of the meansigma methods of all facewidth in raised line A, raised line B, raised line C, and the ratio of the space width of raised line D and the facewidth is 1:1 to 2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521137070.8U CN205300355U (en) | 2015-12-31 | 2015-12-31 | Combined copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521137070.8U CN205300355U (en) | 2015-12-31 | 2015-12-31 | Combined copper pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205300355U true CN205300355U (en) | 2016-06-08 |
Family
ID=56470175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521137070.8U Expired - Fee Related CN205300355U (en) | 2015-12-31 | 2015-12-31 | Combined copper pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205300355U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944990A (en) * | 2019-12-10 | 2021-06-11 | 珠海格力电器股份有限公司 | Heat exchange tube, heat exchanger and air conditioner |
-
2015
- 2015-12-31 CN CN201521137070.8U patent/CN205300355U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944990A (en) * | 2019-12-10 | 2021-06-11 | 珠海格力电器股份有限公司 | Heat exchange tube, heat exchanger and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 |