CN101776412A - Evaporation heat transfer pipe - Google Patents
Evaporation heat transfer pipe Download PDFInfo
- Publication number
- CN101776412A CN101776412A CN201010115877A CN201010115877A CN101776412A CN 101776412 A CN101776412 A CN 101776412A CN 201010115877 A CN201010115877 A CN 201010115877A CN 201010115877 A CN201010115877 A CN 201010115877A CN 101776412 A CN101776412 A CN 101776412A
- Authority
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- China
- Prior art keywords
- transfer pipe
- fin
- heat transfer
- evaporation heat
- groove
- 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.)
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- 238000001704 evaporation Methods 0.000 title claims abstract description 63
- 230000008020 evaporation Effects 0.000 title claims abstract description 63
- 241000256259 Noctuidae Species 0.000 claims description 9
- 241000826860 Trapezium Species 0.000 claims description 5
- 238000009834 vaporization Methods 0.000 abstract description 5
- 230000008016 vaporization Effects 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 3
- 238000009835 boiling Methods 0.000 description 11
- 230000005587 bubbling Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 208000002925 dental caries Diseases 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
- F28F13/185—Heat-exchange surfaces provided with microstructures or with porous coatings
- F28F13/187—Heat-exchange surfaces provided with microstructures or with porous coatings especially adapted for evaporator surfaces or condenser surfaces, e.g. with nucleation sites
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides an evaporation heat transfer pipe. A fin part of the evaporation heat transfer pipe comprises a plurality of parallel outer fins and inter-fin grooves formed between the outer fins, wherein the cross section of each outer fin is in an approximate umbrella or T shape, and each outer fin comprises a main fin and two sub fins arranged on the top of the main fin, wherein in a horizontal unfolding structure of the fin part, the top end of each sub fin forms a certain included angle with the horizontal end line, a slit flow passage is formed between two adjacent sub fins respectively positioned on two adjacent outer fins, and each inter-fin groove is divided into an upper fin groove and a lower fin groove through the slit flow passage. The evaporation heat transfer pipe provided by the invention increases the heat exchange area exponentially, enhances the turbulence degree of the flowing of fluid, has stable steam gathering capability, can form stable vaporization cores, increases the vaporization core numbers of the heat transfer pipe, and effectively improves the evaporation heat exchange performance of the heat transfer pipe.
Description
Technical field
The present invention relates to the heat-transfer pipe technical field, particularly a kind of evaporation heat transfer pipe.
Background technology
For the heat-transfer pipe manufacturing, improve the efficiency of refrigeration air-conditioner, mainly be to realize by the heat transfer efficiency of exploitation efficient heat conducting tube raising heat exchanger.
Prior art has been developed the evaporation heat transfer pipe of the outer fin of a variety of different structures, these have the evaporation heat transfer pipe of the outer fin of difformity, though have various different version, but all follow basic boiling enhanced principle, promptly mostly make the umbilicate type cavity structure, as Themoexcel-E pipe, Gewa-T pipe etc.This umbilicate type cavity structure is to different cold-producing mediums, because its wetting power difference, collection vapour ability also is different, thereby evaporation and heat-exchange efficient is also different.
Along with new working medium constantly occurs, the attribute between each working medium is also different, make present umbilicate type cavity structure that different working medium are all had stable collection vapour ability, can stably, continuously produce bubble, is difficult to accomplish.Simultaneously,, improve the evaporation and heat-exchange performance of heat-transfer pipe further, the improved place of many needs is also arranged at existing umbilicate type cavity structure.
Summary of the invention
Technical problem to be solved by this invention provides a kind of evaporation heat transfer pipe, can further improve the evaporation and heat-exchange performance of the heat-transfer pipe of equipment such as refrigeration air-conditioner.
In order to address the above problem, the invention discloses a kind of evaporation heat transfer pipe, the fin portion of this evaporation heat transfer pipe comprises many outer fins that are parallel to each other, and groove between the wing that forms between outer fin, the cross section of every described outer fin is similar umbellate form or T type, and every described outer fin comprises: main wing and be arranged at two secondary wings at this main wing top;
Wherein, in the horizontal development structure of described fin portion, the top of every described secondary wing and the horizontal end line θ that forms an angle;
Lay respectively between two adjacent pair wings on adjacent two outer fins and form slit conduit, groove between described wing is divided into upper fin groove and underwing groove.
Preferably, the scope of described angle theta is: 0 °≤θ≤90 °.
Preferably, the top of the outer fin of described similar umbellate form or T type offers groove.
Preferably, the cross section of described secondary wing is triangular form or trapezium structure.
Preferably, the width d＜3mm of described slit conduit.
Preferably, described fin portion is arranged at the outer surface or the inner surface of described evaporation heat transfer pipe.
The invention also discloses another kind of evaporation heat transfer pipe, the fin portion of this evaporation heat transfer pipe comprises many outer fins that are parallel to each other, and groove between the wing that forms between outer fin, the cross section of every described outer fin is similar umbellate form or T type, and every described outer fin comprises: main wing and be arranged at two secondary wings at this main wing top;
Wherein, in the horizontal development structure of described fin portion, the top of every described secondary wing and the horizontal end line θ that forms an angle;
The junction, bottom that lays respectively at two adjacent pair wings on adjacent two outer fins offers several apertures, and groove between described wing is divided into upper fin groove and underwing groove.
Preferably, the scope of described angle theta is: 0 °≤θ≤90 °.
Preferably, the described top that is the outer fin of similar umbellate form or T type offers groove.
Preferably, the cross section of described secondary wing is triangular form or trapezium structure.
Preferably, described fin portion is arranged at the outer surface or the inner surface of described evaporation heat transfer pipe.
Compared with prior art, the present invention has the following advantages:
Evaporation heat transfer pipe provided by the invention because set up two secondary wings on the fin outside, is multiplied heat exchange area, has strengthened the flow-disturbing degree that fluid flows; Simultaneously, the slit conduit of adjacent pair wing bottom or aperture are divided into upper fin groove and underwing groove with groove between wing, a plurality of dual umbilicate type cavitys have been constituted, according to classical coring theory, this curved cavity all has stable collection vapour ability to the cold-producing medium of different wet performances, can form the stable nucleus of boiling, and keeping of the nucleus of boiling promptly can continuously produce bubble, is the key factor that improves the evaporimeter heat transfer efficiency.Thereby outer fin structure provided by the invention has increased the vaporization nucleus calculation of heat-transfer pipe, and its volatility is strengthened greatly.Simultaneously, by means of special flow passage structure (slit) bubble is generated after, can form bubbling polymerization, can form liquid microlayer evaporation at the bottom of the large-area bubble, further strengthened boiling heat transfer.
Description of drawings
Fig. 1 is the horizontal development structural representation of first embodiment of evaporation heat transfer pipe fin portion;
Fig. 2 is the horizontal development structural representation that evaporation heat transfer pipe fin quality award from the ministry is selected embodiment;
Fig. 3 is the horizontal development structural representation of second embodiment of evaporation heat transfer pipe fin portion.
The specific embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Embodiment one
With reference to Fig. 1, show the horizontal development structural representation of first embodiment of evaporation heat transfer pipe fin portion.Suppose that in the present embodiment the fin portion of evaporation heat transfer pipe is arranged at the outer surface of evaporation heat transfer pipe.As shown in Figure 1, fin portion comprises: many outer fins 1 of parallel distribution form groove 2 between wing between adjacent two outer fins 1.Every outer fin 1 comprises: main wing 11 and two secondary wings 12.Article two, secondary wing 12 is arranged at the top of main wing 11, forms certain included angle θ between its top and the horizontal end line, the scope of θ can for: 0 °≤θ≤90 °.When θ=0 °, the cross section of above-mentioned outer fin 1 is the T type; When 0 °＜θ＜90 °, two secondary wings 12 are downward-sloping respectively, and the cross section of outer fin 1 is similar umbellate form; When θ=90 °, the cross section of above-mentioned outer fin 1 is perpendicular to the outer surface of heat-transfer pipe.
Lay respectively at and form slit conduit 20 between two adjacent pair wings 12 on adjacent two outer fins 1, this slit conduit 20 is divided into underwing groove 21 and upper fin groove 22 with groove between wing 2.Above-mentioned two different outside distance between the two adjacent pair wings 12 on the fin 1, the width d of promptly above-mentioned slit conduit 20, its number range can be d＜3mm.
In the present embodiment, the cross section of secondary wing 12 can be a triangular form, also can be structure such as trapezoidal, and the present invention need not limit the shape of secondary wing.
The evaporation heat transfer pipe that the foregoing description provides because set up two secondary wings on the fin outside, is multiplied the heat exchange area of heat-transfer pipe outer surface, has strengthened the flow-disturbing degree that fluid flows; Simultaneously, the slit conduit of adjacent pair wing bottom is divided into upper fin groove and underwing groove with groove between wing, a plurality of dual umbilicate type cavitys have been constituted, according to classical coring theory, this curved cavity all has stable collection vapour ability to the cold-producing medium of different wet performances, can form the stable nucleus of boiling, and keeping of the nucleus of boiling promptly can continuously produce bubble, is the key factor that improves the heat transfer efficiency of the evaporation heat transfer pipe in the evaporimeter.Thereby the outer fin structure that present embodiment provides has increased the vaporization nucleus calculation of heat-transfer pipe, and its volatility is strengthened greatly.Simultaneously, by means of special flow passage structure (slit) bubble is generated after, can form bubbling polymerization, can form liquid microlayer evaporation at the bottom of the large-area bubble, further strengthened boiling heat transfer.
In a preferred embodiment of the invention, groove 13 can also be offered in the top of the main wing 12 of fin 1 outside, and with the further increase nucleus of boiling, concrete structure is referring to shown in Figure 2.
Embodiment two
With reference to Fig. 3, show the horizontal development structural representation of second embodiment of evaporation heat transfer pipe fin portion.Equally, in the present embodiment, suppose that the fin portion of evaporation heat transfer pipe is arranged at the outer surface of evaporation heat transfer pipe.As shown in Figure 3, fin portion comprises: many outer fins 1 of parallel distribution form groove 2 between wing between adjacent two outer fins 1.Every outer fin 1 comprises: a main wing 31 and two secondary wings 32.Article two, secondary wing 32 is arranged at the top of above-mentioned main wing 31, and the scope of the angle theta that forms between its top and the horizontal end line is: 0 °≤θ≤90 °.When θ=0 °, the cross section of above-mentioned outer fin 1 is the T type; When 0 °＜θ＜90 °, two secondary wings 32 are downward-sloping respectively, and the cross section of outer fin 1 is similar umbellate form; When θ=90 °, the cross section of above-mentioned outer fin 1 is perpendicular to the outer surface of heat-transfer pipe.
Connect or close vicinity in the bottom that lays respectively at two adjacent pair wings 32 on the fin 1 outside adjacent two, offer several apertures 210, groove between wing 2 is divided into underwing groove 211 and upper fin groove 212.
In the present embodiment, the cross section of secondary wing 32 can be a triangular form, also can be structure such as trapezoidal, and the present invention need not limit the shape of secondary wing.
Different with embodiment one is, in the present embodiment, the bottom of two secondary wings 32 on the adjacent two outer fins 1 is the next-door neighbour's or connect, and connects or next-door neighbour's place, two secondary wing bottoms offers a series of apertures 210, replaces the slit conduit among the embodiment.
The processing technology of present embodiment aperture 210 can be: at first offer a series of semi-circular groove in the bottom of a secondary wing 32, offer another series semi groove at the correspondence position of the bottom of corresponding another secondary wing then, then two adjacent pair wings 32 that offer semi-circular groove are flattened, compress, make the two next-door neighbour and every pair of half slot constitute aperture 210.Certainly, in the embodiment of the invention, not limiting orifice be shaped as circular hole, also can be the aperture of other shape.
In the present embodiment, can form a plurality of aperture evaporations, the heat-transfer pipe performance is strengthened greatly.This kind structure also can avoid because the obstruction of slit conduit in embodiment one structure that causes of technological level instability, can stably strengthen the evaporation and heat-exchange performance of heat-transfer pipe.
In another preferred embodiment of the present invention, groove 33 can also be offered in the top of the main wing 32 of fin 1 outside, and with the further increase nucleus of boiling, concrete structure is referring to shown in Figure 3.
More than each embodiment describes all is the situation that fin portion is arranged at the evaporation heat transfer tube outer surface.In actual production and using, the fin portion structure of the evaporation heat transfer pipe that the various embodiments described above provide also is applicable to female screw heat-transfer pipe, and promptly above-mentioned fin portion structure also can be arranged at the inner surface of evaporation heat transfer pipe, can obtain higher evaporation and heat-exchange efficient equally.
In a word, evaporation heat transfer pipe provided by the invention is improved to two secondary wing type structures with the wing type of outer fin, and the wing type of secondary wing can be a triangular form, also trapezium structure.Two secondary wings are downward-sloping, and the wing top of secondary wing and the angular range between the horizontal end line are between 0 °～90 °.The spacing of adjacent two secondary wings is very little, to form the evaporation and heat-exchange in the slit conduit.In order further to increase the gasification core, groove can be offered in the top of the main wing of outer fin.
The fin portion structure of the evaporation heat transfer pipe after the improvement has increased by two secondary wings, thereby has effectively increased heat exchange area, has increased the vaporization nucleus calculation.The bottom of secondary wing is divided into upper fin groove and underwing groove with groove between wing, a plurality of cavitys have been constituted, according to classical coring theory, this cavity is dual umbilicate type cavity, cold-producing medium to different wet performances, all have stable collection vapour ability, can form the stable nucleus of boiling, thereby the evaporation and heat-exchange performance of heat-transfer pipe is strengthened greatly.
Simultaneously, the heat-transfer pipe of this kind version, by means of special runner (slit) bubble is generated after, can form bubbling polymerization, and form liquid microlayer evaporation at the bottom of the large-area bubble, strengthened boiling heat transfer greatly.
In addition, among the embodiment of another fin portion of the present invention, the evaporation heat transfer tubular construction of two secondary wing bottom perforates, form large-area aperture evaporation by means of a series of apertures, the heat-transfer pipe performance is strengthened greatly, also can avoid stably to strengthen the evaporation and heat-exchange performance of heat-transfer pipe because the slit that the technological level instability causes stops up.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
More than to a kind of evaporation heat transfer pipe provided by the present invention, be described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (11)
1. evaporation heat transfer pipe, the fin portion of this evaporation heat transfer pipe comprises many outer fins that are parallel to each other, and groove between the wing that forms between outer fin, it is characterized in that, the cross section of every described outer fin is similar umbellate form or T type, and every described outer fin comprises: main wing and be arranged at two secondary wings at this main wing top;
Wherein, in the horizontal development structure of described fin portion, the top of every described secondary wing and the horizontal end line θ that forms an angle;
Lay respectively between two adjacent pair wings on adjacent two outer fins and form slit conduit, groove between described wing is divided into upper fin groove and underwing groove.
2. evaporation heat transfer pipe according to claim 1 is characterized in that, the scope of described angle theta is: 0 °≤θ≤90 °.
3. evaporation heat transfer pipe according to claim 1 is characterized in that, the top of the outer fin of described similar umbellate form or T type offers groove.
4. evaporation heat transfer pipe according to claim 1 is characterized in that the cross section of described secondary wing is triangular form or trapezium structure.
5. evaporation heat transfer pipe according to claim 1 is characterized in that, the width d＜3mm of described slit conduit.
6. according to the arbitrary described evaporation heat transfer pipe of claim 1～5, it is characterized in that described fin portion is arranged at the outer surface or the inner surface of described evaporation heat transfer pipe.
7. evaporation heat transfer pipe, the fin portion of this evaporation heat transfer pipe comprises many outer fins that are parallel to each other, and groove between the wing that forms between outer fin, it is characterized in that, the cross section of every described outer fin is similar umbellate form or T type, and every described outer fin comprises: main wing and be arranged at two secondary wings at this main wing top;
Wherein, in the horizontal development structure of described fin portion, the top of every described secondary wing and the horizontal end line θ that forms an angle;
The junction, bottom that lays respectively at two adjacent pair wings on adjacent two outer fins offers several apertures, and groove between described wing is divided into upper fin groove and underwing groove.
8. evaporation heat transfer pipe according to claim 7 is characterized in that, the scope of described angle theta is: 0 °≤θ≤90 °.
9. evaporation heat transfer pipe according to claim 7 is characterized in that, the described top that is the outer fin of similar umbellate form or T type offers groove.
10. evaporation heat transfer pipe according to claim 7 is characterized in that the cross section of described secondary wing is triangular form or trapezium structure.
11., it is characterized in that described fin portion is arranged at the outer surface or the inner surface of described evaporation heat transfer pipe according to the arbitrary described evaporation heat transfer pipe of claim 7～10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101158777A CN101776412B (en) | 2010-03-02 | 2010-03-02 | Evaporation heat transfer pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101158777A CN101776412B (en) | 2010-03-02 | 2010-03-02 | Evaporation heat transfer pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101776412A true CN101776412A (en) | 2010-07-14 |
| CN101776412B CN101776412B (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101158777A Active CN101776412B (en) | 2010-03-02 | 2010-03-02 | Evaporation heat transfer pipe |
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| CN (1) | CN101776412B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305569A (en) * | 2011-08-16 | 2012-01-04 | 江苏萃隆精密铜管股份有限公司 | Heat exchanger tube used for evaporator |
| CN104006579A (en) * | 2014-05-20 | 2014-08-27 | 江苏萃隆精密铜管股份有限公司 | Efficient heat-exchange tube for evaporator |
| CN105043154A (en) * | 2015-09-01 | 2015-11-11 | 无锡隆达金属材料有限公司 | Efficient heat-conducting condenser pipe |
| CN109737646A (en) * | 2019-03-07 | 2019-05-10 | 常州九洲创胜特种铜业有限公司 | Evaporation tube and its application and preparation method |
| CN109944677A (en) * | 2019-03-01 | 2019-06-28 | 冀凯河北机电科技有限公司 | A kind of air engine new engine fin |
| CN112369132A (en) * | 2018-07-12 | 2021-02-12 | 法国大陆汽车公司 | Heat sink with improved thermal conductivity |
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| CN2257376Y (en) * | 1995-12-18 | 1997-07-02 | 华南理工大学 | T type finned heat-transfer tube with internal helical fin |
| JPH11316096A (en) * | 1998-03-04 | 1999-11-16 | Kobe Steel Ltd | Boiling type heat transfer pipe |
| CN1731066A (en) * | 2005-08-09 | 2006-02-08 | 江苏萃隆铜业有限公司 | Heat exchange tube of evaporator |
| CN1982827A (en) * | 2005-12-13 | 2007-06-20 | 金龙精密铜管集团股份有限公司 | Flooded copper-evaporating heat-exchanging pipe for electric refrigerator set |
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| CN201210026Y (en) * | 2008-05-09 | 2009-03-18 | 金龙精密铜管集团股份有限公司 | Heat transfer pipe of flooded evaporator |
| CN101539383A (en) * | 2008-03-17 | 2009-09-23 | 金龙精密铜管集团股份有限公司 | Heat exchange pipe and heat exchanger |
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2010
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| EP0495453A1 (en) * | 1991-01-14 | 1992-07-22 | The Furukawa Electric Co., Ltd. | Heat transmission tube |
| CN2257376Y (en) * | 1995-12-18 | 1997-07-02 | 华南理工大学 | T type finned heat-transfer tube with internal helical fin |
| JPH11316096A (en) * | 1998-03-04 | 1999-11-16 | Kobe Steel Ltd | Boiling type heat transfer pipe |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305569A (en) * | 2011-08-16 | 2012-01-04 | 江苏萃隆精密铜管股份有限公司 | Heat exchanger tube used for evaporator |
| CN104006579A (en) * | 2014-05-20 | 2014-08-27 | 江苏萃隆精密铜管股份有限公司 | Efficient heat-exchange tube for evaporator |
| CN104006579B (en) * | 2014-05-20 | 2016-03-02 | 江苏萃隆精密铜管股份有限公司 | A kind of high-efficient heat-exchanger of evaporimeter |
| CN105043154A (en) * | 2015-09-01 | 2015-11-11 | 无锡隆达金属材料有限公司 | Efficient heat-conducting condenser pipe |
| CN112369132A (en) * | 2018-07-12 | 2021-02-12 | 法国大陆汽车公司 | Heat sink with improved thermal conductivity |
| US12016155B2 (en) | 2018-07-12 | 2024-06-18 | Continental Automotive France | Heat sink with improved thermal conductivity |
| CN109944677A (en) * | 2019-03-01 | 2019-06-28 | 冀凯河北机电科技有限公司 | A kind of air engine new engine fin |
| CN109944677B (en) * | 2019-03-01 | 2024-03-01 | 冀凯河北机电科技有限公司 | Novel engine fin for air engine |
| CN109737646A (en) * | 2019-03-07 | 2019-05-10 | 常州九洲创胜特种铜业有限公司 | Evaporation tube and its application and preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101776412B (en) | 2012-11-21 |
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Denomination of invention: Evaporation heat transfer pipe Effective date of registration: 20171215 Granted publication date: 20121121 Pledgee: China Minsheng Banking Corp Zhengzhou branch Pledgor: Wuxi Golden Dragon Kawamura Precision Tube Co., Ltd.|Chongqing Longyu Precision Copper Tube Co., Ltd.|Henan Longhui Copper Industry Co., Ltd.|Xinxiang Jinxiang Precision Pipe Fittings Co., Ltd.|Xinxiang Longteng Refrigeration Technology Co.,Ltd.|Jiangsu Canghuan Copper Industry Co.,Ltd.|Jinlong Precision Copper Pipe Group Co., Ltd.|Guangdong Longfeng Precise Copper Tube Co., Ltd. Registration number: 2017990001045 |
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| CP02 | Change in the address of a patent holder |
Address after: 404000 588 Airport Road, Wanzhou District, Chongqing (Wanzhou Economic Development Zone) Patentee after: Jinlong Precision Copper Pipe Group Co., Ltd. Address before: 453000 No. 191 Renmin West Road, Henan, Xinxiang Patentee before: Jinlong Precision Copper Pipe Group Co., Ltd. |
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| CP02 | Change in the address of a patent holder | ||
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Date of cancellation: 20190814 Granted publication date: 20121121 Pledgee: China Minsheng Banking Corp Zhengzhou branch Pledgor: Jinlong Precision Copper Pipe Group Co., Ltd. Registration number: 2017990001045 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
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Denomination of invention: Evaporation heat-transfer pipe Effective date of registration: 20190830 Granted publication date: 20121121 Pledgee: China Minsheng Banking Corp Zhengzhou branch Pledgor: Jinlong Precision Copper Pipe Group Co., Ltd. Registration number: Y2019990000127 |
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