WO2006059544A1 - 高圧冷媒用内面溝付伝熱管 - Google Patents
高圧冷媒用内面溝付伝熱管 Download PDFInfo
- Publication number
- WO2006059544A1 WO2006059544A1 PCT/JP2005/021672 JP2005021672W WO2006059544A1 WO 2006059544 A1 WO2006059544 A1 WO 2006059544A1 JP 2005021672 W JP2005021672 W JP 2005021672W WO 2006059544 A1 WO2006059544 A1 WO 2006059544A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tube
- heat transfer
- groove
- transfer tube
- grooves
- Prior art date
Links
- 238000012546 transfer Methods 0.000 title claims abstract description 141
- 239000003507 refrigerant Substances 0.000 title claims abstract description 69
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 14
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000004378 air conditioning Methods 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 6
- 238000005057 refrigeration Methods 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000008014 freezing Effects 0.000 abstract 1
- 238000007710 freezing Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 11
- 230000014509 gene expression Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 7
- 230000005494 condensation Effects 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
- F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
Definitions
- the present invention relates to an internally grooved heat transfer tube constituting a heat exchanger used in various refrigeration air-conditioning hot water supply devices, and in particular, a cross-fin tube heat exchanger using a high-pressure refrigerant typified by carbon dioxide gas.
- the present invention relates to an internally grooved heat transfer tube.
- heat exchangers that operate as evaporators or condensers have been used in air conditioners such as home air conditioners, automobile air conditioners, and knocker air conditioners, and refrigerators.
- air conditioners such as home air conditioners, automobile air conditioners, and knocker air conditioners, and refrigerators.
- cross fin tubes are usually constructed by integrally assembling air-side aluminum plate fins and refrigerant-side heat transfer tubes (copper tubes).
- a heat exchanger is most commonly used.
- a heat transfer tube constituting such a cross fin tube type heat exchanger a large number of spiral grooves are formed on the inner surface of the tube so as to extend with a predetermined lead angle with respect to the tube axis.
- a so-called internally grooved heat transfer tube in which an internal fin having a predetermined height is formed between them is well known.
- HFC refrigerants such as R-407C and R-410A, which have a relatively high global warming potential, and R-32, which has a low global warming potential
- R-407C and R-410A which have a relatively high global warming potential
- R-32 which has a low global warming potential
- Synchronization to natural refrigerants such as carbon dioxide, propane, and isobutane
- carbon dioxide refrigerant unlike natural refrigerants such as propane, has no harmful toxicity to the human body.
- it is nonflammable, so there is less risk of fire due to refrigerant leakage.
- Air conditioning and refrigeration It has been attracting attention as a refrigerant used in air-conditioning refrigeration and hot water supply systems that also have functions.
- a supercritical cycle using a pressure region above the critical point on the high pressure side is applied.
- This high-pressure side pressure varies depending on the application (refrigeration, air conditioning, hot water supply), and the reliability evaluation condition of the hot water supply system compressor can be used as a reference for considering the maximum operating pressure. For example, in a long-term reliability test for reliability evaluation of a compressor for a hot water supply system, a test condition of about 15 MPa is applied, and the system COP (performance factor) of such a hot water supply equipment is around 12 MPa.
- the pressure resistance design considering the maximum working pressure of about 15 MPa is preferable in consideration of sudden changes in operating conditions.
- the heat exchanger is operated at a pressure of about! ⁇ 4MPa.
- a carbon dioxide refrigerant it is 5 ⁇ : 15MPa. Therefore, it will be used at about 5 times higher pressure than conventional ones.
- Patent Document 1 discloses an example using a thin copper tube or stainless steel tube
- Patent Document 2 JP 2001-153571
- Patent Document 2 discloses an example in which a heat exchanger is constructed using a flat oblong and multi-hole tube made of aluminum.
- the material of the heat transfer tube is copper or copper.
- An alloy is desirable.
- the diameter is reduced.
- the heat transfer performance of the copper heat transfer tube has been clarified, but the heat transfer performance is not sufficient compared to the heat transfer tube with an internal groove because the inner surface is a smooth heat transfer tube. From the viewpoint of improvement, an internally grooved heat transfer tube made of copper or copper alloy having high pressure resistance is desired.
- the outer diameter of the tube is reduced, or the bottom of the tube wall thickness at the groove forming portion formed on the inner surface of the tube.
- methods such as increasing the wall thickness will be adopted, with regard to reducing the diameter, the diameter of about 7mm ⁇ , which has been generally used in the past, should be reduced to about 4mm ⁇ .
- the heat transfer tube is expanded by inserting a tube expansion plug into the heat transfer tube. In many cases, this is done by mechanical expansion, which is a method of tightly adhering to and fixing to the mounting hole provided in the mounting hole. It is very difficult.
- the groove depth tends to decrease as the bottom wall thickness increases. It is difficult to improve the heat transfer performance of an internally grooved heat transfer tube by applying high performance technology such as downsizing and thin fins. If the bottom wall thickness is increased, a large force is applied during machine expansion, so the height of the fin formed between the grooves on the inner surface of the pipe can be increased or the fin thickness can be increased. If the thickness is reduced, the problem that the fins are crushed by the pressure at the time of mechanical expansion will also be caused.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-31488
- Patent Document 2 Japanese Patent Laid-Open No. 2001-153571
- the present invention has been made in the background of vigorous circumstances, and the problem to be solved is a cross fin of a refrigerating and air-conditioning hot water supply apparatus using a high-pressure refrigerant typified by carbon dioxide gas. It is an object of the present invention to provide an internally grooved heat transfer tube with an improved heat transfer coefficient in the tube while maintaining sufficient pressure resistance in the internally grooved heat transfer tube constituting the tube heat exchanger.
- the present inventors have made various studies in order to solve such a problem, and as a result, a large number of grooves on the inner surface of the tube constituting the cross fin tube heat exchanger are provided in the tube circumferential direction. Or a copper or copper alloy internally grooved heat transfer tube formed with an internal fin having a predetermined height between the grooves.
- the relationship between the groove depth and the groove cross-sectional area is regulated, and between the number of grooves and the maximum pipe inner diameter, By maintaining the predetermined relationship, the inventors have found that sufficient heat transfer performance can be obtained while ensuring the pressure strength that allows the use of a high-pressure carbon dioxide refrigerant.
- the present invention has been completed on the basis of powerful knowledge, and the gist of the present invention is a heat transfer tube constituting a cross-fin tube type heat exchanger using a high-pressure refrigerant.
- a large number of grooves on the surface in the pipe circumferential direction or with a predetermined lead angle with respect to the pipe axis In an internally grooved heat transfer tube made of copper or copper alloy in which inner fins of a predetermined height are formed between the grooves, the outer diameter of the tube is D [mm],
- the bottom wall thickness that is the tube wall thickness at the groove formation site is t [mm], the groove depth of the groove is d [mm], and the cross-sectional area per groove in the cross section perpendicular to the tube axis is A [ mm 2 ], t / D is not less than 0.041 and not more than 0.146, and d 2 ZA is not less than 0.75 and not more than 1.5, and N is the number of grooves in the groove, Di Is configured so that N
- the IJ has a pressure of 5 to 15 MPa. It will be adopted.
- the inner fin is advantageously configured to have a trapezoidal shape with a flat or arc-shaped head or a triangular cross-sectional shape.
- the outer diameter (D) of the tube is set to:!
- the bottom wall thickness (t) is 0.29-1.02mm. Is adopted
- the groove depth (d) is 0.08-0.17 mm.
- the groove cross-sectional area (A) is, those 0. 004-0. 038mm 2, preferably Adopted.
- the number of grooves (N) is 30 to: 150 / tube circumference. Adopted advantageously.
- the groove The lead angle with respect to the tube axis is 10 ° to 50 °.
- the one having an apex angle force of 0 ° to 50 ° of the inner fin is employed.
- the gist of the present invention is also a refrigerating and air-conditioning hot water supply apparatus including a cross fin tube type heat exchanger configured using the above-described internally grooved heat transfer tube.
- FIG. 1 is an explanatory cross-sectional view showing an example of an internally grooved heat transfer tube used in a cross fin tube heat exchanger according to the present invention.
- FIG. 2 is an enlarged sectional view illustrating a part of the internally grooved heat transfer tube shown in FIG.
- FIG. 3 In the test apparatus used to measure the single tube performance of the internally grooved heat transfer tube in the example, (a) is the evaporation test and (b) is the flow of the refrigerant when the condensation test is performed. It is explanatory drawing which shows a communication state.
- FIG. 1 shows an example of an internal grooved heat transfer tube for high-pressure refrigerant according to the present invention in a cross-sectional view cut along a plane perpendicular to the tube axis direction. That is, it is clear from Figure As described above, the heat transfer tube 10 is a predetermined one selected appropriately from copper or copper alloy according to the required heat transfer performance and the type of heat transfer medium circulated in the heat transfer tube.
- a large number of inner surface fins 14 are formed so as to be positioned between the inner surface grooves 12 and 12.
- the inner surface groove 12 formed on the inner surface of the tube has a groove depth.
- S It is formed in d, and has a substantially trapezoidal shape that gradually narrows according to the direction of force at the bottom of the groove.
- the thickness of the tube wall between the bottom bottom of the inner surface groove 12 and the outer peripheral surface of the tube is the bottom wall thickness: t.
- the inner fin 14 is formed so as to be positioned between the inner groove 12 and the adjacent inner groove 12.
- the inner fin 14 has a substantially trapezoidal shape with a head having an arc shape, but may have a substantially trapezoidal shape with a flat head or a triangular shape. There is no problem.
- such a heat transfer tube 10 must be manufactured using a known rolling method, rolling method, or the like as disclosed in, for example, Japanese Patent Application Laid-Open No. 2002-5588. It becomes.
- the rolling carriage device as shown in FIG. 4 of the powerful publication, when a single continuous pipe is passed through the rolling processing device, By pressing the raw tube between the grooved plug inserted into the inner hole of the tube and the circular die arranged on the outer peripheral portion, the diameter is reduced, and at the same time, a predetermined groove is formed on the inner peripheral surface of the tube. Are formed continuously.
- a continuous strip-like strip material is used by using a processing device having a structure as shown in FIG.
- the desired inner-grooved heat transfer tube (10) is manufactured by subjecting the strip-shaped material to grooving or tube-forming by a predetermined rolling process while moving is there.
- tZD is configured to be not less than 0.041 and not more than 0.146, and d 2 / A is not less than 0.75 and not more than 1.5.
- the lead angle of the inner surface groove 12 with respect to the tube axis 10 ° to 50 °
- the apex angle of the inner surface fin within the range of 0 ° to 50 °
- the number (N) of the inner surface groove 12 formed on the inner surface of the pipe is selected in the range of 30 to about 150 / tube circumference, preferably 50 to 110 Z.
- the maximum inner diameter corresponding to the inner diameter of the pipe formed by connecting the groove bottoms of the grooves in other words, the pipe outer diameter (D) is doubled the bottom wall thickness (t).
- N / Di is configured to be 8 or more and 24 or less.
- the bottom of the internally grooved heat transfer tube is obtained by setting the specifications of the heat transfer tube to values satisfying the relational expression as described above. Even when the thickness was increased to improve the pressure resistance, the heat transfer coefficient in the tube could be improved. In other words, it is clear that it is possible to improve the pressure resistance of the internally grooved heat transfer tube by increasing the bottom wall thickness than before, and the bottom wall thickness necessary to obtain a certain pressure strength is Since the pipe outer diameter increases as the pipe outer diameter increases, mm] and tZD is set to be 0.041 or more and 0.146 or less when the bottom wall thickness is t [mm].
- NZDi the number of grooves is too small with respect to the inner diameter. Cannot be obtained. Also, if N / Di is larger than 24, the number of grooves will be too large for the inner diameter, and it will be very difficult to process grooves when forming such internally grooved heat transfer tubes. When mass production falls, it will cause problems.
- the specifications such as the tube outer diameter and groove depth of the heat transfer tube 10 are set to values satisfying the relational expression as described above, so that the bottom wall thickness is increased more than the conventional one. Therefore, even when the pressure resistance of the internally grooved heat transfer tube was improved, the heat transfer coefficient in the tube could be improved.
- a cross fin tube heat exchanger generally used for a refrigeration air-conditioning hot-water supply device formed using such a heat transfer tube 10 is manufactured as follows, for example. . First, using a predetermined metal material such as aluminum or an alloy thereof, a plate fin in which a plurality of predetermined assembly holes are formed on the surface of a plate material having a predetermined shape is formed by pressing or the like. After laminating a plurality of the obtained plate fins so that the assembly holes are aligned, separately prepared heat transfer tubes 10 are respectively inserted into the assembly holes, and then the heat transfer tubes are inserted.
- a cross fin tube is formed by physically assembling the plate fin on the air side and the heat transfer tube on the refrigerant side.
- various parts such as U-bend pipe and header that connect the heat transfer pipes are attached and assembled in the same structure as before. As a result, it can be assembled as a cross-fin tube heat exchanger.
- the operating pressure of the heat exchanger that has been conventionally operated at a relatively low pressure of about 1 to 4 MPa.
- a high pressure of 5 to 15 MPa among the refrigerants used in conventional power heat exchangers.
- Various high-pressure refrigerants such as HFC-type refrigerants such as R-32 used at relatively high pressures and carbon dioxide refrigerants used at particularly high pressures can be suitably used.
- a large number of inner surface grooves are formed on the inner surface of the tube as spiral grooves extending at a predetermined groove inclination angle (lead angle) with respect to the tube axis, and the outer diameter of the tube.
- Example 1 with different specifications as shown in Table 1 below, in which the bottom wall thickness, groove depth, groove cross-sectional area, and number of grooves satisfy the relational expression shown in the present invention.
- Table 1 Table 1 below, in which the bottom wall thickness, groove depth, groove cross-sectional area, and number of grooves satisfy the relational expression shown in the present invention.
- the relationship between the outer diameter of the pipe and the bottom wall thickness is shown in the relational expression according to the present invention as compared with the comparative example 1 which is a general specification of a high performance inner surface grooved pipe that is currently in practical use. If the relationship between the outer diameter of the pipe and the cross-sectional area of the groove, or the relationship between the number of grooves and the maximum inner diameter does not satisfy the above-mentioned relational expression, prepare as Comparative Examples 2 to 5, respectively. The specifications are shown in Table 1 below. In these examples:! To 6 and comparative examples:! To 5, the fin apex angle and the groove inclination angle (lead angle) of the inner surface groove are the fin apex angle: 40 ° and the groove in all the test tubes. Inclination angle: 18 °.
- Table 1 Prepare 5 samples of each sample heat transfer tube cut to 300mm length, and close one opening and close the other opening against the water sealed inside the tube. Then, gradually increase the pressure with a water pressure generator and measure the pressure at the time when the test heat transfer tube breaks. Each pressure was measured, and the average value is shown in Table 2 below as a measurement result.
- the outer diameter of the pipe, the bottom wall thickness, the groove cross-sectional area, and the groove depth satisfy the relational expressions shown in the present invention.
- both the heat transfer coefficient in the tubes of evaporation and condensation are improved.
- the heat transfer coefficient in the tube for both evaporation and condensation was increased by increasing the number of grooves by 5 even though the groove depth was reduced by 0. Olmm compared to Comparative Example 1.
- the pressure strength is improved by about 15% by increasing the bottom wall thickness by 0.04 mm.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Metal Extraction Processes (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05809632A EP1818641A4 (en) | 2004-12-02 | 2005-11-25 | HEAT TRANSFER TUBE WITH GROOVED INTERNAL SURFACE, USED FOR A HIGH-PRESSURE REFRIGERANT PRODUCT |
US11/736,311 US7490658B2 (en) | 2004-12-02 | 2007-04-17 | Internally grooved heat transfer tube for high-pressure refrigerant |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004350357A JP4651366B2 (ja) | 2004-12-02 | 2004-12-02 | 高圧冷媒用内面溝付伝熱管 |
JP2004-350357 | 2004-12-02 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/736,311 Continuation US7490658B2 (en) | 2004-12-02 | 2007-04-17 | Internally grooved heat transfer tube for high-pressure refrigerant |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006059544A1 true WO2006059544A1 (ja) | 2006-06-08 |
Family
ID=36564978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/021672 WO2006059544A1 (ja) | 2004-12-02 | 2005-11-25 | 高圧冷媒用内面溝付伝熱管 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7490658B2 (ja) |
EP (1) | EP1818641A4 (ja) |
JP (1) | JP4651366B2 (ja) |
KR (1) | KR100918216B1 (ja) |
CN (1) | CN100523703C (ja) |
WO (1) | WO2006059544A1 (ja) |
Families Citing this family (16)
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JP5566001B2 (ja) * | 2007-03-30 | 2014-08-06 | 株式会社コベルコ マテリアル銅管 | 二酸化炭素冷媒を使用したガスクーラー用内面溝付伝熱管 |
KR20090022841A (ko) * | 2007-08-31 | 2009-03-04 | 엘지전자 주식회사 | 냉동 장치의 열교환기 및 그 냉매 튜브와 그 제조 방법 |
JP4738401B2 (ja) | 2007-11-28 | 2011-08-03 | 三菱電機株式会社 | 空気調和機 |
JP2009162395A (ja) * | 2007-12-28 | 2009-07-23 | Showa Denko Kk | 二重管式熱交換器 |
JP2009228929A (ja) * | 2008-03-19 | 2009-10-08 | Kobelco & Materials Copper Tube Inc | 蒸発器用内面溝付伝熱管 |
US20090294112A1 (en) * | 2008-06-03 | 2009-12-03 | Nordyne, Inc. | Internally finned tube having enhanced nucleation centers, heat exchangers, and methods of manufacture |
JP2010038502A (ja) * | 2008-08-08 | 2010-02-18 | Mitsubishi Electric Corp | 熱交換器用の伝熱管、熱交換器、冷凍サイクル装置及び空気調和装置 |
JP2010139233A (ja) * | 2008-11-13 | 2010-06-24 | Sumitomo Light Metal Ind Ltd | 蒸発器用のクロスフィンチューブ型熱交換器 |
JP4638951B2 (ja) * | 2009-06-08 | 2011-02-23 | 株式会社神戸製鋼所 | 熱交換用の金属プレート及び熱交換用の金属プレートの製造方法 |
US20140367076A1 (en) * | 2012-01-18 | 2014-12-18 | Mitsubishi Electric Corporation | Heat exchanger for vehicle air-conditioner and vehicle air-conditioner |
CN105026869B (zh) * | 2013-02-21 | 2017-09-12 | 开利公司 | 用于热交换器的管道结构 |
ITMI20131684A1 (it) * | 2013-10-11 | 2015-04-12 | Frimont Spa | Condensatore per macchina di fabbricazione del ghiaccio, metodo per la sua realizzazione, e macchina di fabbricazione del ghiaccio che incorpora tale condensatore |
US10514210B2 (en) | 2014-12-31 | 2019-12-24 | Ingersoll-Rand Company | Fin-tube heat exchanger |
CN106610242A (zh) * | 2015-10-22 | 2017-05-03 | 青岛海尔新能源电器有限公司 | 内螺纹铜管及具有该内螺纹铜管的换热设备 |
US10584923B2 (en) | 2017-12-07 | 2020-03-10 | General Electric Company | Systems and methods for heat exchanger tubes having internal flow features |
CN112908121B (zh) * | 2021-02-07 | 2022-03-01 | 中国科学技术大学 | 一种用于反应堆热工实验教学的超临界二氧化碳装置 |
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- 2004-12-02 JP JP2004350357A patent/JP4651366B2/ja active Active
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2005
- 2005-11-25 CN CNB200580039981XA patent/CN100523703C/zh not_active Expired - Fee Related
- 2005-11-25 KR KR1020077015016A patent/KR100918216B1/ko active IP Right Grant
- 2005-11-25 WO PCT/JP2005/021672 patent/WO2006059544A1/ja active Application Filing
- 2005-11-25 EP EP05809632A patent/EP1818641A4/en not_active Withdrawn
-
2007
- 2007-04-17 US US11/736,311 patent/US7490658B2/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
US20070199684A1 (en) | 2007-08-30 |
KR100918216B1 (ko) | 2009-09-21 |
JP2006162100A (ja) | 2006-06-22 |
CN100523703C (zh) | 2009-08-05 |
EP1818641A4 (en) | 2010-08-04 |
US7490658B2 (en) | 2009-02-17 |
JP4651366B2 (ja) | 2011-03-16 |
CN101061361A (zh) | 2007-10-24 |
EP1818641A1 (en) | 2007-08-15 |
KR20070086837A (ko) | 2007-08-27 |
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