EP0641980B1 - Dispositif d'échange de chaleur avec un fluide en cours de congélation partielle - Google Patents

Dispositif d'échange de chaleur avec un fluide en cours de congélation partielle Download PDF

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Publication number
EP0641980B1
EP0641980B1 EP94420241A EP94420241A EP0641980B1 EP 0641980 B1 EP0641980 B1 EP 0641980B1 EP 94420241 A EP94420241 A EP 94420241A EP 94420241 A EP94420241 A EP 94420241A EP 0641980 B1 EP0641980 B1 EP 0641980B1
Authority
EP
European Patent Office
Prior art keywords
fluid
cooled
rotor
heat exchange
circulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94420241A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0641980A1 (fr
Inventor
Adrien Laude-Bousquet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
A. LAUDE-BOUSQUET
Johnson Controls Enterprises SAS
Original Assignee
MC International SA
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Publication date
Application filed by MC International SA filed Critical MC International SA
Publication of EP0641980A1 publication Critical patent/EP0641980A1/fr
Application granted granted Critical
Publication of EP0641980B1 publication Critical patent/EP0641980B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/12—Producing ice by freezing water on cooled surfaces, e.g. to form slabs
    • F25C1/14—Producing ice by freezing water on cooled surfaces, e.g. to form slabs to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes

Definitions

  • the present invention relates generally to any indirect heat exchange between, on the one hand a refrigerant or refrigerant, for example a refrigerant (for example ammonia) during vaporization, and on the other hand a fluid with cool, namely a liquid during cooling and / or partial freezing, excluding any setting or mass of said fluid, such as glycol, alcoholic or salty water, the crystallization point of which is less than 0 ° vs.
  • a refrigerant or refrigerant for example a refrigerant (for example ammonia) during vaporization
  • a fluid with cool namely a liquid during cooling and / or partial freezing, excluding any setting or mass of said fluid, such as glycol, alcoholic or salty water, the crystallization point of which is less than 0 ° vs.
  • scraped surface heat exchangers constitute devices of complicated structure and construction, and therefore of a non-negligible cost, in particular if the scrapers are pivotally mounted on the rotor, each with its own return means. .
  • the subject of the present invention is an alternative to scraped surface heat exchangers, which is much simpler as regards its construction and operation.
  • the present invention in general, to oppose the deposition of any solid layer on the hot face of the heat exchange wall, there is created in the current of the fluid to be cooled, circulating in the aforementioned pressure circulation conduit. , and in contact with the hot face of the heat exchange wall, a turbulent boundary layer, sub-cooled in the liquid phase, and in direct heat exchange with the rest of the current of the fluid to be cooled.
  • the various antagonistic elements of the deposition of any solid layer of the fluid to be cooled, on the hot face of the heat exchange wall comprise a multiplicity of flexible filaments, one end of which is integral with the rotor , and whose other free end is adjacent, that is to say in contact or in the vicinity but at a distance from the hot face of the heat exchange wall.
  • the flexible filaments are arranged essentially to stir in the liquid phase the boundary layer of the current of the fluid to be cooled, in contact with the hot face of the heat exchange wall, and in admixture with the rest of said fluid to cool.
  • sub-cooled is meant the characteristic that the heat exchange fluid is brought into the liquid phase, that is to say without at least partial freezing, at a temperature below its crystallization point.
  • the formation of a turbulent boundary layer in contact with the hot face of the heat exchange wall has the effect that freezing takes place, not on the hot face of said wall, but within of the fluid to be cooled in circulation, immediately in the vicinity of said wall, by direct heat exchange, that is to say by mixing the turbulent and sub-cooled boundary layer, expelled from said hot face, with the rest of the fluid to cool.
  • this turbulent boundary layer is obtained, in a non-exclusive manner, by the vibratile effect, of agitation and / or homogenization of the free end of the flexible filaments, in rotation.
  • the intrinsic characteristics of these filaments including the nature (in terms of flexibility and / or rigidity, resistance to low temperatures, etc.), as well as the arrangement of these different filaments, including density per unit area, are chosen, firstly according to the nature of the fluid to be cooled, and secondly the speed of rotation of the rotor, so as to obtain the turbulent boundary layer in phase liquid, characterizing the present invention.
  • the present invention also provides the following determining advantages.
  • the freezing of the fluid to be cooled takes place by obtaining micro-crystals, that is to say solid phase crystals of dimensions much smaller than those of the crystals obtained with a scraped surface exchanger. Obtaining such micro-crystals promotes the homogeneity of the cooled fluid, that is to say of the mixture of the liquid and solid phases of said fluid.
  • micro-crystals reduce or suppress the inertia when melting the cooled fluid, obtained in two-phase form, which appears extremely favorable when said fluid is then used in heat exchange processes, in particular refrigeration, with exchange of the latent heat of fusion of the solid phase of said fluid.
  • the present invention also makes it possible to reduce or limit the expenditure of energy required, in particular mechanical energy, to prevent or counteract the formation of any solid layer on the hot face of the heat exchange wall.
  • the invention also makes it possible to increase the heat exchange coefficient of the fluid during cooling with respect to the heat exchange wall.
  • the filamentary members 15 are separated from each other, being at the same time, superimposed in groups of two, and offset angularly with respect to the axis of the rotor, for example at an angle of 90 ° or 60 °, from one group to another, and this from one end to the other of the circulation duct 3. And two filamentary members 15 of the same group are arranged opposite in a single and same diametrical plane.
  • the rotor drive means 40 consists of a motor 17 mounted outside of the circulation duct 3, and coupled to the rotor 12 by any suitable means, for example a gear motor.
  • FIG. 2 differs from that previously described, by the mode of driving the rotor 12.
  • the rotor is driven, with a means 18 acting under the driving effect of the fluid 2 to be cooled, passing through the circulation duct 3.
  • conduits 3 for circulation of the fluid to be cooled are arranged in a battery.
  • one and the same motor 17 is coupled by a transmission means 31 to the various rotors 12 of the various circulation conduits 3.
  • the embodiment shown in Figure 7 includes a battery of conduits 3, as previously described with reference to Figures 4 to 6. But in this case, and as already described with reference to Figure 2, the motor 17 has been deleted in favor of motor means 23 integrated in the rotors 12, and acting under the sole effect of the circulation of the fluid 2. To this end, the distributor 29 of the fluid to be cooled communicates only with the different axial inlets 21 of the hollow rotors 12 of the different traffic conduits 3 respectively.
  • filamentary members 15 are superimposed in pairs, possibly being angularly offset from one pair to the other, as shown more particularly in FIGS. 10 to 14.
  • the same arm 46 or 47 of radial extension carries two filamentary members 15 opposite one with respect to the other, in relation to the two hot faces 6a of two exchange partitions 42 and 43 thermal, belonging respectively to the two abovementioned capacities 41, that is to say facing one another.
  • FIG. 9 differs from that described according to FIG. 8, essentially by the presence of vanes 54 for driving the rotor 12, under the driving effect of the fluid 2 to be cooled in circulation, distributed radially in the box 51 of introduction of said fluid.
  • the pairs of radial arms 46 and 47 are angularly offset with respect to each other, at a predetermined angle, for example 60 °, and this according to the same direction of rotation, clockwise or counterclockwise.
  • the fixed tube 55 has two perforations 55a and 55b, axially elongated, and opposite.
  • the angular dimension of each perforation 55a or 55b is identical to the predetermined angle of offset from one pair to the other, for example 60 °.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Thermistors And Varistors (AREA)
EP94420241A 1993-09-08 1994-09-08 Dispositif d'échange de chaleur avec un fluide en cours de congélation partielle Expired - Lifetime EP0641980B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9310887A FR2709817B1 (fr) 1993-09-08 1993-09-08 Dispositif d'échange de chaleur intégrant des moyens d'enlèvement d'une phase solide.
FR9310887 1993-09-08

Publications (2)

Publication Number Publication Date
EP0641980A1 EP0641980A1 (fr) 1995-03-08
EP0641980B1 true EP0641980B1 (fr) 1996-07-17

Family

ID=9450814

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94420241A Expired - Lifetime EP0641980B1 (fr) 1993-09-08 1994-09-08 Dispositif d'échange de chaleur avec un fluide en cours de congélation partielle

Country Status (8)

Country Link
US (1) US5488836A (es)
EP (1) EP0641980B1 (es)
AT (1) ATE140528T1 (es)
DE (1) DE69400307T2 (es)
DK (1) DK0641980T3 (es)
ES (1) ES2091111T3 (es)
FR (1) FR2709817B1 (es)
GR (1) GR3021128T3 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113503755A (zh) * 2021-09-09 2021-10-15 北京福典工程技术有限责任公司 增强传质换热的方法以及使用其的换热构件

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5884501A (en) * 1996-04-19 1999-03-23 Goldstein; Vladimir Ice-making machine and heat exchanger therefor
DE19938044C1 (de) * 1999-08-12 2000-10-05 Fraunhofer Ges Forschung Eisgenerator zur Erzeugung einer wäßrigen Suspension aus Eiskristallen
FR2827037B1 (fr) * 2001-07-03 2003-09-12 Bousquet Adrien Laude Dispositif et procede de stockage et de regeneration d'un fluide frigo-porteur comprenant une phase solide et une phase liquide melangees
JP4330830B2 (ja) * 2001-09-28 2009-09-16 高砂熱学工業株式会社 氷製造装置
FR2833340B1 (fr) 2001-12-07 2004-07-02 Lgl France Dispositif d'echange de chaleur
FR2881820B1 (fr) * 2005-02-10 2008-05-30 Saint Gobain Vetrotex Dispositif pour l'extraction de chaleur a partir de gaz et pour la recuperation des condensats
CN100401001C (zh) * 2006-02-24 2008-07-09 哈尔滨工业大学 地表水源热泵系统凝固热利用及防污染装置
US8132424B2 (en) * 2008-09-17 2012-03-13 Integrated Marine Systems, Inc. Ice machines with extruded heat exchanger
EP2593728B1 (en) * 2010-07-12 2019-09-18 Evert Frederik Potgieter Industrial shell and tube heat exchanger
US9599404B2 (en) * 2013-08-27 2017-03-21 Black Night Enterprises, Inc. Fluid direct contact heat exchange apparatus and method
CN103697726B (zh) * 2013-12-23 2016-05-25 南京迪泽尔空调设备有限公司 一种壳管换热器
KR102201142B1 (ko) * 2019-01-28 2021-01-08 엘지전자 주식회사 전열관 및 칠러용 열교환기

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB188002706A (en) * 1880-07-02 1880-07-02 Improvements in the manufacture of snow and in apparatus to be employed therefor
US2749722A (en) * 1952-09-19 1956-06-12 Frank W Knowles Apparatus for making ice in small pieces
SE306083B (es) * 1963-11-04 1968-11-18 Mo Och Domsjoe Ab
US3473603A (en) * 1966-01-26 1969-10-21 Hitachi Ltd Heat exchanger
US3477499A (en) * 1968-06-13 1969-11-11 Edward E Goetz Rotatable thermal transfer units
US4201558A (en) * 1978-12-01 1980-05-06 Beatrice Foods Co. Method and apparatus for preparing and dispensing a semi-frozen product
JPS6141887A (ja) * 1984-08-02 1986-02-28 ストルド　バルツ　アクシエセルスカツプ 熱交換器
US4669277A (en) * 1986-08-19 1987-06-02 Sunwell Engineering Company Ltd. Corrugated plate heat exchanger
US5141328A (en) * 1990-05-23 1992-08-25 Dilley Jerry D High speed mixing apparatus
US5228503A (en) * 1991-05-17 1993-07-20 Smith Douglas W P High viscous fluid heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113503755A (zh) * 2021-09-09 2021-10-15 北京福典工程技术有限责任公司 增强传质换热的方法以及使用其的换热构件

Also Published As

Publication number Publication date
DK0641980T3 (da) 1996-12-02
ES2091111T3 (es) 1996-10-16
FR2709817A1 (fr) 1995-03-17
DE69400307D1 (de) 1996-08-22
ATE140528T1 (de) 1996-08-15
US5488836A (en) 1996-02-06
GR3021128T3 (en) 1996-12-31
EP0641980A1 (fr) 1995-03-08
DE69400307T2 (de) 1996-11-21
FR2709817B1 (fr) 1995-10-20

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