CN104654888A - Seamless internal thread heat transfer copper pipe - Google Patents
Seamless internal thread heat transfer copper pipe Download PDFInfo
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- CN104654888A CN104654888A CN201410839094.1A CN201410839094A CN104654888A CN 104654888 A CN104654888 A CN 104654888A CN 201410839094 A CN201410839094 A CN 201410839094A CN 104654888 A CN104654888 A CN 104654888A
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- tooth rib
- copper pipe
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Abstract
The invention relates to the technical field of a heat transfer pipe, and discloses a seamless internal thread heat transfer copper pipe. The seamless internal thread heat transfer copper pipe comprises a copper pipe body, wherein the internal wall of the copper pipe body is provided with three sets of tooth ribs distributed in a spiraling manner, which are the tooth ribs A, the tooth ribs B and the tooth ribs C, wherein sections of the tooth ribs A, the tooth ribs B and the tooth ribs C are triangle; any section of the copper pipe body, each cambered surface where the tooth rib A, the tooth rib B and the tooth rib C are respectively is a 120-degree central angle, the ratio of addendum angles of the tooth ribs A, the tooth ribs B and the tooth ribs C is 1:1.5:2. Therefore, the seamless internal thread heat transfer copper pipe has the beneficial effects that the refrigerant flow resistance is effectively reduced, and the heat exchange rate between refrigerants of different parts in the copper pipe body is improved.
Description
Technical field
The present invention relates to heat-transfer pipe technical field, particularly relate to a kind of seamless internal thread heat transmission copper pipe.
Background technology
Condenser in air-conditioning and evaporimeter are all formed by inner screw thread copper pipe dish system, inner screw thread copper pipe is upgraded to from light pipe in heat-transfer pipe technical field, it is a large technological innovation, greatly improve air conditioner refrigerating, the performance heated, current inner screw thread copper pipe is all generally single helicla flute or helical tooth, also there are many documents or patent discloses the helical tooth of different cross section shape, such as there is M shape, Y shape, trapezoidal, semi-circular teeth, the profile of tooth of various shape is exactly nothing but to increase heat transfer surface area, but for inner screw thread copper pipe, only that the cross sectional shape changing tooth does not fundamentally increase heat transfer performance, and the tooth Profile Machining had is very difficult, some profiles of tooth can increase media flow resistance, counter productive can be brought, even reduce the heat transfer performance of screwed pipe itself.
Chinese patent Authorization Notice No.: CN100365370C, authorized announcement date on January 30th, 2008, disclose a kind of female screw heat-transfer pipe, its inner surface has helical tooth, and 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 greater than the width of cavity, and heat-transfer pipe is suitable for room, an air-conditioner, is particularly useful for cold dim type room air conditioner.Its weak point is that Y shape tooth can increase the circulating resistance of refrigerant in copper pipe, be unfavorable for heat trnasfer inside and outside copper pipe, refrigerant is more even at copper Bottomhole pressure, flow-disturbing intensity is little, between copper pipe inwall place and the refrigerant in copper pipe centre, heat exchange is slower, heat is formed with the refrigerant of copper pipe center poor after copper pipe inwall place's refrigerant and heat exchange with outside, because flow-disturbing intensity is little, between copper pipe inwall place's refrigerant and copper pipe centre refrigerant, heat transmission is slow, thus cause the inner refrigerant of copper pipe and the hot heat exchange performance in the external world to decline, reduce the heat exchange performance of heat-transfer pipe.
Summary of the invention
The present invention causes refrigerant flow resistance to increase to solve the internal thread of heat transmission copper pipe in prior art, the deficiency that in heat-transfer pipe, different parts refrigerant exchange rate is low, provide one and can effectively reduce refrigerant circulating resistance, strengthen copper pipe body inner flow-disturbing, action of turbulent flow, improve the seamless internal thread heat transmission copper pipe of copper pipe body internal-external heat exchange speed.
To achieve these goals, the present invention adopts following technical scheme:
A kind of seamless internal thread heat transmission copper pipe, comprise copper pipe body, described copper pipe body inwall is provided with three groups of tooth ribs in spiral distribution, be respectively tooth rib A, tooth rib B, tooth rib C, the cross section of tooth rib A, tooth rib B, tooth rib C is triangular in shape, on the arbitrary cross section of copper pipe body, tooth rib A, tooth rib B, tooth rib C place cambered surface respectively account for 120 ° of central angles, and the ratio of the addendum angle of described tooth rib A, tooth rib B, tooth rib C is 1:1.5:2.When refrigerant steam flows in copper pipe body, tooth rib increases heat transfer surface area on the one hand, tooth rib has guiding function to steam simultaneously, steam is flowed along the hand of spiral, due to the tooth rib that the three kinds of addendum angles that distribute in copper pipe body are different, so just cause at copper pipe body arbitrary section place, tooth rib A, tooth rib B, the resistance that steam in tooth rib C corresponding region is subject to is different, thus form the different refrigerant steam of three plume speed, because the flow velocity of three strands of vapor streams is different, three strands of refrigerant vapor streams mutually knock into the back and strengthen the flow-disturbing effect of refrigerant circumference, and then strengthen again the action of turbulent flow of copper pipe body inwall and middle part steam, impel between different parts steam and realize heat balance fast, exchange rate between different parts refrigerant in raising copper pipe body, ensure that the refrigerant at copper pipe body inwall 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 C and copper pipe body axis is 10 °-45 °.Angle β then causes too greatly steam resistance large, and angle β too little then flow-disturbing poor effect, 10 °-45 ° can reach effective flow-disturbing effect, can ensure that again the resistance of vapor stream is moderate.
As preferably, the height of teeth top of described tooth rib A, tooth rib B, tooth rib C reduces successively respectively along identical circumference from Article 1 to the last item, the maximum tooth of tooth rib A, tooth rib B, tooth rib C is risen identical, and the minimum tooth of tooth rib A, tooth rib B, tooth rib C is risen also identical.When refrigerant flows in copper pipe body, centrifugal force is produced under the effect of tooth rib, tooth rib A, tooth rib B, the height of teeth top of tooth rib C reduces successively, the line of corresponding tooth top be three sections with the circular arc of copper pipe body decentraction, the guiding function that three sections of circular arcs have refrigerant, when refrigerant flows along copper pipe body inwall, it is not identical that it is positioned at arbitrarily angled suffered resistance, the different vapor stream of multiply speed can be formed in whole copper pipe body, mutually interfere between air-flow and form flow-disturbing, enhance the heat exchange between copper pipe body inner different spaces place refrigerant steam greatly, thus refrigerant steam-energy in guarantee copper pipe body and the external world carry out heat exchange to greatest extent.
As preferably, described copper pipe body inwall is also provided with and tooth rib A, tooth rib B, helicla flute that tooth rib C rotation direction is contrary.Helicla flute effectively can reduce the circulating resistance of refrigerant on the one hand, can reduce the thickness of copper pipe body inner boundary layer (refrigerant of gas-liquid mixed state, liquid refrigerants can be fitted with copper pipe body inwall under the influence of centrifugal force and be formed boundary layer) on the other hand.
As preferably, described helicla flute rises place periphery for datum level with maximum tooth in tooth rib A, tooth rib B, tooth rib C, equals the mean value of all tooth depths in tooth rib A, tooth rib B, tooth rib C bottom helicla flute to the distance of copper pipe body inwall.Due to tooth rib A, tooth rib B, the height of teeth top of tooth rib C is different, the tooth rib top only having height of teeth top to be greater than mean value is just understood crossing with helicla flute and is cut off by helicla flute, the tooth rib that height of teeth top is greater than mean value is large to refrigerant flow resistance, helicla flute can reduce this resistance targetedly, part refrigerant can carry out flowing across tooth rib from helicla flute, thus form some shallow bid adverse currents, interfere between adverse current and the following current higher than the tooth rib place of mean value and form turbulent flow, simultaneously shallow bid adverse current also impact teeth can rise the following current at the tooth rib place being less than mean value under the effect of inertia, thus diverse location place forms different azimuth in pipe, the flow-disturbing of angle, turbulent flow, between great raising refrigerant, refrigerant and extraneous heat exchanger effectiveness.
As preferably, in described copper pipe body, be also provided with expansion tube, between described expansion tube and copper pipe body, form annular chamber, in described expansion tube, be provided with some independently expansion chambers vertically.Refrigerant due to copper pipe body centre needs to carry out heat exchange by the refrigerant at inwall place and the external world, although this heat exchanger effectiveness is high, but the refrigerant being still less than inwall place is direct and the efficiency of heat exchange with outside, therefore center arranges expansion tube, refrigerant is flowed in annular chamber, increases refrigerant and the direct heat-exchange capacity in the external world; 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 all thicker, and in this structure, expansion tube has the effect of releasing the pressure, when annular cavity pressure is excessive, expansion chamber can be squeezed, thus plays the effect alleviating super pressure, and the copper pipe body tube wall therefore in this structure is thin compared with normal heat transfer tubes, the thin path that can reduce heat trnasfer of tube wall, strengthens the heat exchange inside and outside copper pipe body.
As preferably, the outer position cover between adjacent two expansion chambers of expansion tube has adapter sleeve, is provided with some resiliency supported pin outside adapter sleeve.Expansion tube is outer all arranges adapter sleeve, resiliency supported pin every a segment distance, thus can keep the concentricity of expansion tube and copper pipe body to greatest extent, prevents expansion tube outer wall and copper pipe body contact internal walls.
As preferably, the external diameter of described expansion tube is the 2/5-3/5 of copper pipe body external diameter.
As preferably, described expansion tube is silicone tube, and described adapter sleeve, resiliency supported pin are made up of silica gel.Silicone tube has high temperature resistant, low temperature resistant, aging-resistant performance, long service life.
Therefore, the present invention has can effectively reduce refrigerant circulating resistance, improves the beneficial effect of exchange rate between different parts refrigerant in copper pipe body.
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.
Fig. 6 is expansion tube expansion structure schematic diagram in embodiment 3.
Fig. 7 is B place close-up schematic view in Fig. 5.
In figure: copper pipe body 1 tooth rib A2 tooth rib B3 tooth rib C4 helicla flute 5 expansion tube 6 annular chamber 7 expansion chamber 8 adapter sleeve 9 resiliency supported pin 10 annular spacing groove 11 annular boss 12.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Embodiment 1: one is as shown in Figure 1 seamless internal thread heat transmission copper pipe, comprise copper pipe body 1, copper pipe body 1 inwall is provided with three groups of tooth ribs in spiral distribution, tooth rib A2, tooth rib B3, tooth rib C4, tooth rib A, tooth rib B, the cross section of tooth rib C is triangular in shape, tooth rib A, tooth rib B, the addendum angle of tooth rib C is fillet, thus reduces refrigerant resistance, on the arbitrary cross section of copper pipe body, and tooth rib A, tooth rib B, tooth rib C place cambered surface respectively accounts for 120 ° of central angles, tooth rib A, tooth rib B, the ratio of the addendum angle of tooth rib C is 1:1.5:2, tooth rib A, tooth rib B, the angle β of tooth rib C and copper pipe body axis is 30 °, tooth rib A, tooth rib B, the resistance that steam in tooth rib C corresponding region is subject to is different, thus form the different refrigerant steam of three plume speed, because the flow velocity of three strands of vapor streams is different, three strands of refrigerant vapor streams mutually knock into the back and strengthen the flow-disturbing effect of refrigerant circumference, and then strengthen again the action of turbulent flow of copper pipe body inwall and middle part steam, impel between different parts steam and realize heat balance fast, in raising copper pipe body, exchange rate between different parts refrigerant, ensures that the refrigerant at copper pipe body inwall place is quick, abundant and the external world carries out heat exchange.
Embodiment 2: one is as shown in Figure 2 seamless internal thread heat transmission copper pipe, comprise copper pipe body 1, copper pipe body 1 inwall is provided with three groups of tooth ribs in spiral distribution, tooth rib A2, tooth rib B3, tooth rib C4, tooth rib A, tooth rib B, the cross section of tooth rib C is triangular in shape, tooth rib A, tooth rib B, the addendum angle of tooth rib C is fillet, thus reduce refrigerant resistance, on the arbitrary cross section of copper pipe body, tooth rib A, tooth rib B, tooth rib C place cambered surface respectively accounts for 120 ° of central angles, tooth rib A, tooth rib B, the ratio of the addendum angle of tooth rib C is 1:1.5:2, tooth rib A, tooth rib B, the height of teeth top of tooth rib C reduces successively respectively along identical circumference from Article 1 to the last item, tooth rib A, tooth rib B, the maximum tooth of tooth rib C is risen identical, tooth rib A, tooth rib B, the minimum tooth of tooth rib C is risen also identical, as shown in Figure 3, the angle β of tooth rib A, tooth rib B, tooth rib C and copper pipe body axis is 30 °, and copper pipe body inwall is also provided with and tooth rib A, tooth rib B, helicla flute 5 that tooth rib C rotation direction is contrary, in tooth rib A, tooth rib B, tooth rib C, maximum tooth rises place periphery is datum level, equals the mean value of all tooth depths in tooth rib A, tooth rib B, tooth rib C bottom helicla flute 5 to the distance of copper pipe body inwall.
Embodiment 3: one is as shown in Figure 4 seamless internal thread heat transmission copper pipe, comprise copper pipe body 1, copper pipe body 1 inwall is provided with three groups of tooth ribs in spiral distribution, tooth rib A2, tooth rib B3, tooth rib C4, tooth rib A, tooth rib B, the cross section of tooth rib C is triangular in shape, tooth rib A, tooth rib B, the addendum angle of tooth rib C is fillet, thus reduce refrigerant resistance, on the arbitrary cross section of copper pipe body, tooth rib A, tooth rib B, tooth rib C place cambered surface respectively accounts for 120 ° of central angles, tooth rib A, tooth rib B, the number of tooth rib C is equal, tooth rib A, tooth rib B, the ratio of the addendum angle of tooth rib C is 1:1.5:2, tooth rib A, tooth rib B, the height of teeth top of tooth rib C reduces successively respectively along identical circumference from Article 1 to the last item, tooth rib A, tooth rib B, the maximum tooth of tooth rib C is risen identical, tooth rib A, tooth rib B, the minimum tooth of tooth rib C is risen also identical, copper pipe body inwall is also provided with and tooth rib A, tooth rib B, helicla flute 5 that tooth rib C rotation direction is contrary, also be provided with expansion tube 6 in copper pipe body, the external diameter of expansion tube is 1/2 of copper pipe body external diameter, forms annular chamber 7 between expansion tube and copper pipe body, is provided with some independently expansion chambers 8 in expansion tube vertically.
As shown in Figure 5, the outer position cover between adjacent two expansion chambers of expansion tube 5 has adapter sleeve 9, some resiliency supported pin 10 are provided with outside adapter sleeve, resiliency supported pin outer end and copper pipe body contact internal walls support, thus the concentricity of basic guarantee expansion tube and copper pipe body, prevent expansion tube outer wall and copper pipe body contact internal walls, expansion tube is silicone tube, and adapter sleeve, resiliency supported pin are made up of silica gel; As shown in Figure 7, the junction that expansion tube outer wall is positioned at adjacent two expansion chambers is also provided with annular spacing groove 11, is provided with the annular boss 12 with annular stop slot fit, thus prevents adapter sleeve from sliding on expansion tube outer wall in adapter sleeve.As shown in Figure 6, when passing through vapours in copper pipe body, expansion chamber expanded by heating; the air pressure in annular chamber can be increased, strengthen the heat exchange inside and outside copper pipe body, when the air pressure in annular chamber is too large; expansion chamber can compress, thus reduces air pressure to the pressure of copper pipe body inwall, plays a protective role.Therefore, the present invention has can effectively reduce refrigerant circulating resistance, improves the beneficial effect of exchange rate between different parts refrigerant in copper pipe body.
Claims (9)
1. a seamless internal thread heat transmission copper pipe, comprise copper pipe body, it is characterized in that, described copper pipe body inwall is provided with three groups of tooth ribs in spiral distribution, be respectively tooth rib A, tooth rib B, tooth rib C, the cross section of tooth rib A, tooth rib B, tooth rib C is triangular in shape, on the arbitrary cross section of copper pipe body, tooth rib A, tooth rib B, tooth rib C place cambered surface respectively account for 120 ° of central angles, and the ratio of the addendum angle of described tooth rib A, tooth rib B, tooth rib C is 1:1.5:2.
2. the seamless internal thread heat transmission copper pipe of one according to claim 1, is characterized in that, the angle β of described tooth rib A, tooth rib B, tooth rib C and copper pipe body axis is 10 °-45 °.
3. the seamless internal thread heat transmission copper pipe of one according to claim 1, it is characterized in that, the height of teeth top of described tooth rib A, tooth rib B, tooth rib C reduces successively respectively along identical circumference from Article 1 to the last item, the maximum tooth of tooth rib A, tooth rib B, tooth rib C is risen identical, and the minimum tooth of tooth rib A, tooth rib B, tooth rib C is risen also identical.
4. the seamless internal thread heat transmission copper pipe of one according to claim 3, is characterized in that, described copper pipe body inwall is also provided with and tooth rib A, tooth rib B, helicla flute that tooth rib C rotation direction is contrary.
5. the seamless internal thread heat transmission copper pipe of one according to claim 4, it is characterized in that, described helicla flute rises place periphery for datum level with maximum tooth in tooth rib A, tooth rib B, tooth rib C, equals the mean value of all tooth depths in tooth rib A, tooth rib B, tooth rib C bottom helicla flute to the distance of copper pipe body inwall.
6. the seamless internal thread heat transmission copper pipe of one according to claim 1 or 3 or 4 or 5, it is characterized in that, also be provided with expansion tube in described copper pipe body, between described expansion tube and copper pipe body, form annular chamber, in described expansion tube, be provided with some independently expansion chambers vertically.
7. the seamless internal thread heat transmission copper pipe of one according to claim 6, is characterized in that, the outer position cover between adjacent two expansion chambers of expansion tube has adapter sleeve, is provided with some resiliency supported pin outside adapter sleeve.
8. the seamless internal thread heat transmission copper pipe of one according to claim 7, is characterized in that, the external diameter of described expansion tube is the 2/5-3/5 of copper pipe body external diameter.
9. the seamless internal thread heat transmission copper pipe of one according to claim 7, is characterized in that, described expansion tube is silicone tube, and described adapter sleeve, resiliency supported pin are made up of silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839094.1A CN104654888B (en) | 2014-12-30 | 2014-12-30 | A kind of seamless female thread heat transmission copper pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839094.1A CN104654888B (en) | 2014-12-30 | 2014-12-30 | A kind of seamless female thread heat transmission copper pipe |
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| Publication Number | Publication Date |
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| CN104654888A true CN104654888A (en) | 2015-05-27 |
| CN104654888B CN104654888B (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410839094.1A Active CN104654888B (en) | 2014-12-30 | 2014-12-30 | A kind of seamless female thread heat transmission copper pipe |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2742369Y (en) * | 2004-04-25 | 2005-11-23 | 吴家伟 | Inner ribbed tube for condenser or evaporator |
| JP4294183B2 (en) * | 1999-11-08 | 2009-07-08 | 住友軽金属工業株式会社 | Internal grooved heat transfer tube |
| CN204388682U (en) * | 2014-12-30 | 2015-06-10 | 浙江耐乐铜业有限公司 | Seamless internal thread heat transmission copper pipe |
-
2014
- 2014-12-30 CN CN201410839094.1A patent/CN104654888B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN204388682U (en) * | 2014-12-30 | 2015-06-10 | 浙江耐乐铜业有限公司 | Seamless internal thread heat transmission copper pipe |
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| Publication number | Publication date |
|---|---|
| CN104654888B (en) | 2016-11-30 |
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Effective date of registration: 20170510 Address after: 335211 Jiangxi city of Yingtan province Yujiang County Development Zone, Wuhu Patentee after: Jiangxi Naile Copper Co., Ltd. Address before: 312300 people's West Road, Shangyu Economic Development Zone, Zhejiang, Shaoxing Patentee before: Zhejiang Nai Letong industry Co., Ltd |
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