CN101561210B - Wavelike finned type cold accumulation heat exchanger - Google Patents
Wavelike finned type cold accumulation heat exchanger Download PDFInfo
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- CN101561210B CN101561210B CN200910037952A CN200910037952A CN101561210B CN 101561210 B CN101561210 B CN 101561210B CN 200910037952 A CN200910037952 A CN 200910037952A CN 200910037952 A CN200910037952 A CN 200910037952A CN 101561210 B CN101561210 B CN 101561210B
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Abstract
The invention discloses a wavelike finned type cold accumulation heat exchanger, which is mainly used for a cold accumulation container. The heat exchanger comprises an outer tube, wherein a front seal sheet of the outer tube and a rear seal sheet of the outer tube which are arranged on the end surface of the outer tube; the rear seal sheet of the outer tube bulges outwards to form a fill orifice;the fill orifice is provided with a rear seal cap; two inner tubes communicated through an elbow bend pipe are fixed in the inner cavity of the outer tube; the end surface of the inner tube is provid ed with a front seal sheet of the inner tube and a rear seal sheet of the inner tube; the front seal sheet of the inner tube and the front seal sheet of the outer tube are fixed together by welding the joints; the tail end of the joint is provided with a front seal cap; the upper side and lower side of the outer tube body are formed by wavelike tube walls; the wavelike tube wall forms a bulgy inner fin and a bulgy outer fin on the inner surface and the outer surface respectively; the inner tube body forms a bulgy outer fin on the outer surface. The wavelike finned type cold accumulation heat exchanger has simple structure, low manufacturing cost and high efficient heat exchange, contributes to high efficient heat exchange between a cold accumulation material in the outer tube and the outside, can avoid damage on the heat exchanger caused by the effect of expansion on heating and contraction on cooling, has cold accumulation material and has double functions of, cold charge and discharge.
Description
Technical field
The present invention relates to a kind of heat exchanger, be specifically related to a kind of heat exchanger of finned waveform tube wall.
Background technology
Heat exchanger of many uses for example can be used in all kinds of refrigerating plants.The heat exchanger that is used in traditional refrigerating plant is that the parts with pipeline and system couple together; Form loop; The cold-producing medium inner at heat exchanger circulates; Bore passages does not generally need very big, and for example the heat-exchanger pipeline internal diameter of air-conditioning refrigeration system generally gets final product about 12-15mm.If have only heat exchanger about 12-15mm to be used in the main equipments such as cold-storage counter that size reaches 20 chis (about 6 meters) this internal diameter of the pipeline, its structure and size all can not satisfy specification requirement.The cold-storage counter is in transportation, and the cool storage material in the heat exchanger absorbs the extraneous conduction of counter through the heat exchanger wall and alternate manner penetrates into the heat in the case; The low temperature cooling medium liquid of filling in the device for cooling is filled cold through heat exchanger to cool storage material.How further to improve the efficient and the shortening of heat exchange and fill cool time, reduce cost, be cold-storage heat exchanger technology colleague problem demanding prompt solution always.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned technology, provide a kind of simple in structure, low cost of manufacture, what heat-transfer effect was good has the cool storage material of storage, fills cold and puts cold bifunctional heat exchanger.
For realizing above-mentioned purpose; The technical scheme that the present invention adopts is: a kind of heat exchanger, comprise outer tube, and be located at before the outer tube of outer tube end face mounting after the mounting and outer tube; Mounting outwards protrudes the formation fill orifice behind the said outer tube; Fill orifice is provided with rear seal-cover, and the inner chamber of said outer tube is fixed with two interior pipes that are communicated with through bend pipe, before managing in said inner tube face is provided with
More excellent, said interior tube body outwards protrudes the formation protuberance in both sides up and down, and inboard, said outer tube body middle part is provided with at least one inner fin.
More excellent, the terminal difference of two pairs of inner fins bending formation T shape guide groove is in the same way arranged on the said outer tube.
More excellent, the outer fin in said and T shape guide groove position is corresponding on the pipe is at its T shape guide rail that end forms and T shape guide groove is complementary.
More excellent, said interior pipe back mounting is provided with through hole, is communicated with on the mounting and with interior pipe behind the pipe in said bend pipe two ends are welded on.
More excellent, all offer through hole on the mounting before mounting and the outer tube before the pipe in said, in said joint is welded on before the pipe on the mounting and pass the through hole on the mounting before the outer tube, and the through-hole inner surface welded seal on the outer surface of joint and the preceding mounting of outer tube.
More excellent, before the waveform tube wall on the said outer tube, the outer tube behind mounting and the outer tube before mounting and rear seal-cover, joint, the outer surface of interior pipe, the interior pipe behind mounting and the interior pipe mounting and bend pipe form the outer tube cavity of a sealing.
More excellent, mounting and bend pipe are formed the interior pipe cavity of a sealing behind the inner surface of said joint and preceding capping, interior pipe, the preceding mounting of interior pipe and the interior pipe.
More excellent, outer fin and inner fin on the said outer tube vertically are distributed on the outer tube body, and the end of outer fin and inner fin is align respectively.
Reach, mounting is welded on the outer tube body behind the preceding mounting of said outer tube, the outer tube, and mounting is welded on the interior tube body behind the preceding mounting of said interior pipe, the interior pipe.
Beneficial effect of the present invention: the present invention is simple in structure, and heat exchanger effectiveness is high, installation, easy to use.The inner fin that is provided with on the outer tube wall and outer fin have increased heat transfer area, and the phase-change material for cold storage and the external world that help being placed in the use outer tube bore carry out exchange heat efficiently, can make phase-change material for cold storage efficiently emit cold; Tube wall is arranged to waveform and is helped heat exchanger in the high and low temperature alternative change procedure, the outer tube wall can be in the certain amplitude scope transversal stretching, the effect of avoiding expanding with heat and contract with cold damages heat exchanger; Designing T guide groove and T shape guide rail then are the effects of fixing interior pipe in order to play, and jolting when preventing because of running car causes the impact of welding position (seam of the through hole on the preceding mounting of joint and outer tube); The end of inner fin and outer fin is align respectively, can make heat transfer more even; Joint makes outer tube cavity and interior pipe cavity separate and forms two independently cavitys; In pipe cavity low temperature (below 40 ℃) the refrigerant liquid that is used for circulating, refrigerant liquid is forced into the cool storage material that cycles through inner pipe wall and the outer fin outer tube cavity of interior pipe and fills cold fast; The refrigerant liquid in outer fin on the interior tube body and protuberance make in the pipe cavity and the heat transfer area of the phase-change material for cold storage in the outer tube cavity increase, and have further improved heat exchange effect, fill cool time thereby shorten.
Description of drawings
Fig. 1 is a front view of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view;
Fig. 3 is the B-B profile of Fig. 1;
Fig. 4 is a vertical view of the present invention.
Among the figure: 1, outer tube; 11, mounting before the outer tube; 12, mounting behind the outer tube; 13, fill orifice; 14, rear seal-cover; 15, T shape guide groove; 16, outer tube cavity; 2, interior pipe; 21, mounting before the interior pipe; 22, mounting behind the interior pipe; 23, protuberance; 24, preceding capping; 25, T shape guide rail; 26, interior pipe cavity; 3, bend pipe; 4, joint; 5, waveform tube wall; 6, inner fin; 7, outer fin; 8, through hole.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Like Fig. 1, shown in 2, the invention discloses a kind of heat exchanger, wherein Fig. 2 be the A-A of Fig. 1 to cutaway view, include outer tube 1, interior pipe 2, bend pipe 3, joint 4.Its middle external tube 1 front end face be welded with mounting 11 before the outer tube, rear end face be welded with behind mounting 12 behind the outer tube, the outer tube offer fill orifice 13 on the mounting 12, fill orifice 13 is provided with rear seal-cover 14.Interior pipe 2 is positioned in the inner chamber of outer tube 1 side by side; In pipe 2 mounting 21 before the interior pipe that is welded on front end face is arranged, is welded on mounting 22 behind the interior pipe of rear end face; Interior pipe 2 has two; Also can have three or four and above can, in the both ends open of bend pipe 3 is welded on the mounting 22 of pipe back, through the through hole on the mounting 22 behind the interior pipe 8 be communicated with the through hole of bend pipes 3 so that make a plurality of in pipe 2 be communicated with.Before interior pipe, also offer through hole 8 on the mounting 11 before mounting 21 and the outer tube; And before interior pipe, be welded with joint 4 on the mounting 21; Joint 4 passes preceding mounting 11 of outer tube and the preceding mounting 21 of interior pipe, and the inner chamber of pipe 2 is in communication with the outside in making, and capping 24 before the end of joint 4 is provided with.In addition, before the waveform tube wall 5 on the outer tube 1, outer tube behind mounting 11 and the outer tube before mounting 12 and rear seal-cover 14, joint 4, the outer surface of interior pipe 2, the interior pipe behind mounting 21 and the interior pipe mounting 22 and bend pipe 3 form the outer tube cavity 16 of a sealing; Mounting 22 and bend pipe 3 are formed the interior pipe cavity 26 of a sealing behind the inner surface of joint 4 and preceding capping 24, interior pipe 2, the preceding mounting 21 of interior pipe and the interior pipe; Joint 4 makes outer tube cavity 16 and interior pipe cavity 26 separate and forms two independently cavitys.
Like Fig. 3, shown in Figure 4, Fig. 3 is the B-B profile of Fig. 1, and Fig. 4 is the vertical view of Fig. 1.The main body of outer tube 1 is made up of waveform tube wall 5 both sides up and down; Waveform tube wall 5 inner fin 6 that surfaces externally and internally forms protrusion respectively with outside fin 7; Pipe 2 main bodys form the outer fin 7 of protrusion in said at outer surface; The phase-change material for cold storage and the external world that fin structure helps being placed in the use in the outer tube 1 carry out exchange heat efficiently, make phase-change material for cold storage efficiently emit cold, and tube wall is designed to waveform and helps heat exchanger in the high and low temperature alternative change procedure; Outer tube 1 wall can be in the certain amplitude scope transversal stretching, the effect of avoiding expanding with heat and contract with cold damages heat exchanger.The main body of interior pipe 2 both sides is up and down outwards protruded formation protuberance 23, has increased the heat transfer area of tube wall and phase-change material for cold storage, has further strengthened heat-transfer effect.For interior pipe 2 stably is fixed in the cavity of outer tube 1; Jolting when preventing because of running car causes the impact of welding position (seam of the through hole before joint and the outer tube on the mounting); With the two pairs of inner fins on the outer tube 1 terminal respectively in the same way bending form T shape guide groove 15, with T shape guide groove 15 positions corresponding in outer fin 7 on the pipe 2 then at its terminal T shape guide rail 25 that is complementary with T shape guide groove 15 that forms.
Use step of the present invention is: at first open rear seal-cover, inject phase-change material for cold storage through the fill orifice on the mounting behind the outer tube 12 13 toward the outer tube cavity 16 of outer tubes 1, put rear seal-cover 14 after installing and screw; Heat exchanger is fixed in the point counter compartment; Open the preceding capping 24 of two joints 4 then, the turnover of refrigerant liquid perfusion equipment is taken on muzzle to two joint 4, starting device makes refrigerant liquid flow for 26 li at the interior pipe cavity of interior pipe 2; Cool storage material until making outer tube cavity 16 freezes; Closing device is back in the refrigerant liquid perfusion equipment refrigerant liquid of interior pipe cavity 26 at last, extracts turnover then and takes over mouth; Preceding capping 24 is inserted in joint 4 and is screwed, and heat exchanger just can use like this.
Housing of the present invention and inner fin all adopt aluminum alloy material to make with outer fin, and common heat exchange hold-over plate (box) is done with plastics, and its material, shape and structure are very poor to heat-transfer effect.
This heat exchanger mainly is used in the cold-storage counter; With the heat exchanger difference that is used in traditional refrigerating plant except having more efficiently heat transfer efficiency; Its cavity volume of placing phase-change material for cold storage 9 can also be done very greatly; Cold-storage heat exchanger size range of the present invention is: long, and 2000～3000mm; Wide, 150～500mm; Height, 65～120mm.
Basic functional principle of the present invention is: 16 li of outer tube cavitys that are placed into phase-change material for cold storage heat exchanger; Be installed to then in the casing of insulated container, the heat exchanger of having placed phase-change material for cold storage is cold through overcharging, and undergoes phase transition to store a large amount of colds; Heat exchanger fill cold can the realization through the refrigeration plant in the freezing station; In the freight transportation process, the phase-change material for cold storage in the heat exchanger absorbs the extraneous conduction of counter and other mode and penetrates into the heat in the case through outer tube 1 and the inner fin 6 and outer fin 7 of the band waveform tube wall 5 of heat exchanger; The solid-state cool storage material that has absorbed heat melts gradually; When all becoming liquid state, stop heat absorption, when enough cold-storage liquid measure, the temperature the compartment in fluctuates up and down near maintaining phase transition temperature within a certain period of time; Make goods remain on low temperature environment in transit, reach the refrigeration purpose.
The present invention has increased heat transfer area through inner fin 6 is set with outer fin 7; Helping phase-change material for cold storage is putting when cold and extraneous heat exchange; Especially during the in-built solid state cool storage material; Inner fin 6 inserts the cool storage materials middle part, and the cold energy in centre is evenly conducted to the external world through fin easily, and having avoided slowly influences heat-transfer effect near the cool storage material liquefaction rear center position of the inwall of heat exchanger because of the heat conduction; Internal fixation has fills colod-application outer finned interior pipe 2, forces to get into circulation with low temperature (below 40 ℃) refrigerant liquid and fills cold fast to cool storage material; In the outer fin 7 of pipe on 2 main bodys make with protuberance 23 in the heat transfer area of phase-change material for cold storage of 16 li of outer outer tube cavitys of refrigerant liquid and the interior pipe 2 of pipe cavity 26 increase, further strengthened heat exchange effect, cool time is filled in shortening; The end of inner fin 6 and outer fin 7 is align respectively, can make heat transfer more even; Tube wall is arranged to waveform and is helped heat exchanger in the high and low temperature alternative change procedure, outer tube 1 wall can be in the certain amplitude scope transversal stretching, the effect of avoiding expanding with heat and contract with cold damages heat exchanger; Designing T guide groove 15 then is the effect of fixing interior pipe 2 in order to play with T shape guide rail 25, and jolting when preventing because of running car causes the impact of welding position (seam of the through hole on the preceding mounting of joint and outer tube).
Above-described only is preferred implementation of the present invention, should be pointed out that for the person of ordinary skill of the art; Under the prerequisite that does not break away from the invention design, can also make some distortion and improvement, for example; Interior pipe can be designed as three, and is four, perhaps more; Its corrugated shape of the tube wall of inner and outer pipes can be different etc., and these size ranges and interior shape all belong to protection scope of the present invention.
Claims (6)
1. heat exchanger; Comprise outer tube, be located at before the outer tube of outer tube end face mounting after the mounting and outer tube, mounting outwards protrudes the formation fill orifice behind the said outer tube; Fill orifice is provided with rear seal-cover; The inner chamber of said outer tube is fixed with two and passes through the interior pipes that bend pipe is communicated with, and mounting behind preceding mounting of pipe and the interior pipe in said inner tube face is provided with is welded together mutually by joint between the mounting before mounting and the outer tube before the said interior pipe; Said connector end is provided with preceding capping; It is characterized in that: said outer tube body up and down both sides is made up of the waveform tube wall, and said waveform tube wall forms the inner fin and outer fin of protrusion respectively at surfaces externally and internally, said in tube body form the outer fin that protrudes at outer surface; Have on the said outer tube the two pairs of inner fins terminal respectively in the same way bending form T shape guide groove, said with T shape guide groove position corresponding in outer fin on the pipe at its terminal T shape guide rail that is complementary with T shape guide groove that forms;
Before the waveform tube wall on the said outer tube, outer tube behind mounting and the outer tube before mounting and rear seal-cover, joint, the outer surface of interior pipe, the interior pipe behind mounting and the interior pipe mounting and bend pipe form the outer tube cavity of a sealing, be used to store phase-change material for cold storage;
Mounting and bend pipe are formed the interior pipe cavity of a sealing behind the inner surface of said joint and preceding capping, interior pipe, the preceding mounting of interior pipe and the interior pipe, and low temperature refrigerant liquid is used to circulate.
2. heat exchanger as claimed in claim 1 is characterized in that: tube body outwards protrudes the formation protuberance in both sides up and down in said, and inboard, said outer tube body middle part is provided with at least one inner fin.
3. heat exchanger as claimed in claim 1 is characterized in that: pipe back mounting is provided with through hole in said, is communicated with on the mounting of pipe back and with interior pipe in said bend pipe two ends are welded on.
4. heat exchanger as claimed in claim 1; It is characterized in that: all offer through hole on the mounting before preceding mounting of pipe and the outer tube in said; Said joint is welded on the preceding mounting of interior pipe and passes the through hole on the preceding mounting of outer tube, and the through-hole inner surface welded seal on the mounting before the outer surface of joint and the outer tube.
5. heat exchanger as claimed in claim 1 is characterized in that: outer fin and inner fin on the said outer tube vertically are distributed on the outer tube body, and the end of outer fin and inner fin is align respectively.
6. heat exchanger as claimed in claim 1 is characterized in that: mounting is welded on the outer tube body behind the preceding mounting of said outer tube, the outer tube, and mounting is welded on the interior tube body behind the preceding mounting of said interior pipe, the interior pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910037952A CN101561210B (en) | 2009-03-16 | 2009-03-16 | Wavelike finned type cold accumulation heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910037952A CN101561210B (en) | 2009-03-16 | 2009-03-16 | Wavelike finned type cold accumulation heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101561210A CN101561210A (en) | 2009-10-21 |
| CN101561210B true CN101561210B (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910037952A Expired - Fee Related CN101561210B (en) | 2009-03-16 | 2009-03-16 | Wavelike finned type cold accumulation heat exchanger |
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| CN102419043B (en) * | 2011-12-05 | 2013-08-28 | 合肥美的荣事达电冰箱有限公司 | Cold accumulation component, drawer component and refrigerator |
| JP5862507B2 (en) * | 2012-08-07 | 2016-02-16 | 株式会社デンソー | Cold storage heat exchanger |
| CN103174911B (en) * | 2013-03-26 | 2015-09-23 | 曹煦澄 | A kind of membrane wall structure and application thereof |
| CN104019686A (en) * | 2014-06-05 | 2014-09-03 | 上海交通大学 | Efficient phase change cold storage heat exchange tube |
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| CN108759536A (en) * | 2018-06-29 | 2018-11-06 | 丁玉龙 | energy storage device |
| CN108917439B (en) * | 2018-08-30 | 2024-04-19 | 无锡格林沃科技有限公司 | Phase change radiator |
| CN109870060A (en) * | 2019-01-30 | 2019-06-11 | 深装总建设集团股份有限公司 | Phase-change accumulation energy packaging cartridge and its application |
| DE102019207830A1 (en) * | 2019-05-28 | 2020-12-03 | Mahle International Gmbh | Manufacturing method for manufacturing a heat exchanger arrangement and heat exchanger arrangement for cooling and / or heating a heat exchanger fluid |
| CN110530188B (en) * | 2019-06-24 | 2021-07-23 | 浙江久立特材科技股份有限公司 | Pipe fitting of heat exchanger |
| CN112762601A (en) * | 2019-10-21 | 2021-05-07 | 青岛海尔智能技术研发有限公司 | Cold transfer column condenser and direct current air conditioner |
| CN115183617B (en) * | 2022-06-17 | 2024-04-16 | 浙江理工大学 | Shell-and-tube phase change heat storage heat exchanger utilizing inner and outer fractal ribs to enhance heat exchange |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2445277Y (en) * | 2000-09-28 | 2001-08-29 | 张志刚 | Pipe-type heat exchanger |
| WO2006014032A1 (en) * | 2004-08-06 | 2006-02-09 | Showa Denko K.K. | Heat exchanger, intermediate heat exchanger, and regrigeration cycle |
| CN2876678Y (en) * | 2006-02-22 | 2007-03-07 | 苏权兴 | Heat exchanger for heat pump water heater |
| CN201110682Y (en) * | 2007-10-18 | 2008-09-03 | 重庆大学 | Fin tube ice cold accumulator |
| CN201449096U (en) * | 2009-03-16 | 2010-05-05 | 黄洪滔 | Wavy fin type cold-accumulation heat exchanger |
-
2009
- 2009-03-16 CN CN200910037952A patent/CN101561210B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2445277Y (en) * | 2000-09-28 | 2001-08-29 | 张志刚 | Pipe-type heat exchanger |
| WO2006014032A1 (en) * | 2004-08-06 | 2006-02-09 | Showa Denko K.K. | Heat exchanger, intermediate heat exchanger, and regrigeration cycle |
| CN2876678Y (en) * | 2006-02-22 | 2007-03-07 | 苏权兴 | Heat exchanger for heat pump water heater |
| CN201110682Y (en) * | 2007-10-18 | 2008-09-03 | 重庆大学 | Fin tube ice cold accumulator |
| CN201449096U (en) * | 2009-03-16 | 2010-05-05 | 黄洪滔 | Wavy fin type cold-accumulation heat exchanger |
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| Publication number | Publication date |
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| CN101561210A (en) | 2009-10-21 |
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Denomination of invention: Wavelike finned type cold accumulation heat exchanger Effective date of registration: 20140123 Granted publication date: 20121003 Pledgee: Bank of China, Limited by Share Ltd, Guangzhou, Panyu branch Pledgor: Huang Hongtao Registration number: 2014990000069 |
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Granted publication date: 20121003 Termination date: 20150316 |
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