WO2003058140A2 - Procede et dispositif de refroidissement d'une veine de fluide gazeux, et procede de refroidissement d'articles - Google Patents
Procede et dispositif de refroidissement d'une veine de fluide gazeux, et procede de refroidissement d'articles Download PDFInfo
- Publication number
- WO2003058140A2 WO2003058140A2 PCT/FR2003/000021 FR0300021W WO03058140A2 WO 2003058140 A2 WO2003058140 A2 WO 2003058140A2 FR 0300021 W FR0300021 W FR 0300021W WO 03058140 A2 WO03058140 A2 WO 03058140A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gaseous fluid
- vein
- mixing
- cooling
- duct
- Prior art date
Links
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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G7/00—Other apparatus or process specially adapted for the chocolate or confectionery industry
- A23G7/0043—Other processes specially adapted for the chocolate or confectionery industry
- A23G7/0093—Cooling or drying
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/001—Arrangement or mounting of control or safety devices for cryogenic fluid systems
Definitions
- the present invention relates to a method and a device for cooling a stream of gaseous fluid such as air. It also relates to a method of cooling articles using the aforementioned method of cooling a stream of gaseous fluid.
- This cooling surface is defined by an element which must itself be cooled.
- a cooling fluid other than the gaseous fluid to be cooled is used for this purpose, in the case of cooling by means of a heat exchanger. Consequently, this cooling method has the disadvantage of having a certain inertia. In particular, during a start-up, it does not make it possible to pass in a short time from a situation where the flow of gaseous fluid is not cooled to a stabilized and operational operating regime, in which the stream of fluid gas is cooled to the desired temperature.
- the subject of the invention is a method for cooling a vein of gaseous fluid, comprising steps in which: a) said vein is confined; b) during step a), liquid nitrogen is sprayed into the vein to cool the gaseous fluid, then c) the cooled gaseous fluid is recovered, and is characterized in that before step b), it includes a step in which: d) the gaseous fluid is slowed down by increasing the cross section of the vein.
- step c) is carried out only after the liquid nitrogen has completely vaporized in the vein;
- step d) the vein is directed on an impact surface
- step e) the vein is stirred by sucking the gaseous fluid using a turbomachine; in step e), the vein is stirred while deflecting it; - By acting on the flow of liquid nitrogen sprayed in step b), the temperature of the gaseous fluid recovered in step c) is regulated, around a predetermined temperature.
- the invention also relates to a method for cooling articles, characterized in that it includes the cooling method defined above, as well as at least one step in which the gaseous fluid recovered in step is sent. c) on articles.
- the gaseous fluid is air.
- the subject of the invention is a device for cooling a vein of gaseous fluid, comprising a mixing conduit intended to be traversed by the vein, as well as means for spraying liquid nitrogen into this mixing conduit, characterized in that it comprises a pipe for injecting the gaseous fluid into the mixing pipe, this injection pipe being directed towards at least one impact surface located inside the mixing pipe, and in that that at least on a section containing the impact surface and said spraying means, the mixing pipe has a section greater than the section of the injection pipe.
- the injection pipe is engaged in the mixing pipe by an upstream end of this mixing pipe, said impact surface being turned substantially towards this upstream end;
- the device comprises means for stirring the gaseous fluid, these stirring means being placed downstream of the spraying means;
- the device comprises an enclosure into which opens a downstream end of the mixing conduit, the enclosure and the mixing conduit defining between them a tranquilization passage for the gaseous fluid, the enclosure having an outlet for the gaseous fluid, located at level of said stilling pass;
- the stirring means are placed upstream of said tranquilization passage;
- the upstream end of the mixing duct is open and located in the enclosure;
- the device comprises suction means placed downstream of the spraying means and upstream of the discharge, and provided for driving the gaseous fluid in the direction of flow;
- a turbomachine is common to the stirring means and to the suction means;
- the turbomachine is a centrifugal fan which is arranged at the downstream end of the mixing duct, for sucking the gaseous fluid flowing in this mixing duct;
- the device comprises a regulation loop, around a predetermined temperature, the outlet temperature of the gaseous fluid leaving the cooling device, this regulation loop comprising: means for measuring said outlet temperature;
- a regulator capable of controlling said adjustment means, on the basis of a signal emitted by the measurement means.
- the cooling device shown is, for the most part, generally symmetrical with respect to a vertical axis XX '. It comprises a substantially sealed enclosure 1, which comprises two curved end walls, one upper 2 and the other lower 3, opposite and connected to each other by a side wall or cylindrical shell 4.
- a vertical pipe 5 for injecting the air to be cooled into the cooling device crosses the lower wall 3 and opens into a mixing pipe 6, mounted vertically inside the enclosure 1.
- This mixing pipe 6 is substantially rectilinear, of circular section, and it has an upstream end 7, open and directed towards the lower wall 3, and a downstream end 8, open and directed towards the upper wall 2.
- the injection pipe 5, the mixing pipe 6 and the enclosure 1 are substantially coaxial.
- This impact surface 10, concave downward and situated inside the mixing duct 6, is carried by a jet-breaking screen 11, fixed to the center of the mixing duct 6 by means of several radial arms 11A.
- the downstream end 8 of the mixing duct 6 opens directly into the axial suction 12 of a centrifugal fan 13 mounted in the upper wall 2 and provided with a drive motor 14.
- the circumferential discharge 15 of the centrifugal fan 13 s 'extends opposite the side wall 4, in the enclosure 1, and it is located upstream of an annular and lateral passage of tranquilization 16, which the mixing duct 6 and the side wall 4 delimit between them.
- the enclosure 1 is provided with an outlet formed by a tube 17, the mouth of which gives into the tranquilization passage 16.
- a nozzle 18 for spraying liquid nitrogen is mounted inside the mixing duct 6, downstream of the jet-breaking screen 11, at the end of a tube 19 for supplying liquid nitrogen. It faces the downstream end 8 of the mixing duct 6, that is to say in the direction of flow of the air to be cooled.
- the supply tube 19 is provided with a pump 20.
- a loop 21 for regulating the temperature of the air leaving the cooling device comprises a sensor 22 for measuring the temperature in the discharge pipe 17, as well as a regulator 23 connected to this sensor 22 and to the pump. 20.
- the flow of air inside the cooling device in operation is symbolized by arrows not referenced.
- the air to be cooled is compressed to a distribution pressure, before being admitted into enclosure 1 through the injection duct 5. It enters directly into the mixing duct 6, in the form of a jet which breaks on the impact surface 10. It is then attracted by the vacuum created at the inlet of the centrifugal fan 13 and goes towards the downstream end 8 of the mixing duct 6. In so doing, it flows around the nozzle 18, which sprays liquid nitrogen in the form of droplets. These droplets of liquid nitrogen penetrate all the better into the air stream as past the jet breaker screen 11, this stream having a larger section, the air flows more slowly. Nitrogen droplets sprayed vaporize in the air which is therefore cooled.
- the air sucked axially by the centrifugal fan 13 is discharged radially against the side wall 4, at the upper entrance of the annular passage 16. Also, apart from sucking the air present in the mixing duct 6, this centrifugal fan 13 performs vigorous air mixing. This mixing, all the more effective as the air is deflected in the fan 13 and against the side wall 4, homogenizes the vein and promotes the vaporization of the last nitrogen droplets.
- the centrifugal fan 13 Once the centrifugal fan 13 has passed, the cooled air enters the passage 16, where the flow settles down. After having traversed part of the length of this tranquilization passage 16, most of the air sucked in by the centrifugal fan 13 escapes through the discharge pipe 17, while a small part of this air is directed towards the upstream end 7 of the mixing duct 6, before recirculating in the latter.
- the vaporization of nitrogen droplets in the air to be cooled does not qualitatively modify the composition of this air. Also, the latter can be rejected in the atmosphere without concern of any pollution, for example by being blown on the articles 24, in order to cool these articles 24 in scrolling according to the arrow F.
- Water, present in the form of vapor in the air allowed, may form condensate on cooling.
- the vertical orientation of the enclosure 1 and of the mixing conduit 6, as well as the absence of obturation of the upstream end 7 of this conduit facilitate the evacuation of these condensates by a not shown drain, equipping the wall lower 3.
- the outlet temperature of the cooled air is regulated using the regulation loop 21, around a predetermined temperature, fixed between -196 ° C., which is the boiling point of nitrogen under pressure. atmospheric, and the ambient temperature to which the air to be cooled is admitted through the injection pipe 5.
- the regulator 23 acts on the flow of liquid nitrogen sprayed by controlling the speed of rotation of the pump 20, from the temperature measurement made by the sensor 22.
- liquid nitrogen can be sprayed by means other than by means of the nozzle 18, for example by means of spraying booms.
- the centrifugal fan 13 can be replaced by d other means of mixing, such as a set of deflectors arranged in staggered rows.
- a set of deflectors arranged in staggered rows.
- another turbomachine such as an axial fan mounted inside the mixing duct 6.
- the invention can be implemented using a cooling device having an overall configuration substantially different from that which has just been described, even if the latter has undeniable qualities in terms of compactness and efficiency.
- the invention can be implemented to cool a gaseous fluid other than air.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Confectionery (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002472034A CA2472034A1 (fr) | 2002-01-09 | 2003-01-07 | Procede et dispositif de refroidissement d'une veine de fluide gazeux, et procede de refroidissement d'articles |
AU2003214291A AU2003214291A1 (en) | 2002-01-09 | 2003-01-07 | Method and device for cooling a stream of gaseous liquid and a method of cooling articles |
US10/501,270 US7444823B2 (en) | 2002-01-09 | 2003-01-07 | Method and device for cooling a stream of gaseous liquid and a method of cooling articles |
EP03709856A EP1463913A2 (fr) | 2002-01-09 | 2003-01-07 | Procede et dispositif de refroidissement d'une veine de fluide gazeux, et procede de refroidissement d'articles |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR02/00196 | 2002-01-09 | ||
FR0200196A FR2834554B1 (fr) | 2002-01-09 | 2002-01-09 | Procede et dispositif de refroidissement d'une veine de fluide gazeux, et procede de refroidissement d'articles |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003058140A2 true WO2003058140A2 (fr) | 2003-07-17 |
WO2003058140A3 WO2003058140A3 (fr) | 2004-03-11 |
Family
ID=8871206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2003/000021 WO2003058140A2 (fr) | 2002-01-09 | 2003-01-07 | Procede et dispositif de refroidissement d'une veine de fluide gazeux, et procede de refroidissement d'articles |
Country Status (6)
Country | Link |
---|---|
US (1) | US7444823B2 (fr) |
EP (1) | EP1463913A2 (fr) |
AU (1) | AU2003214291A1 (fr) |
CA (1) | CA2472034A1 (fr) |
FR (1) | FR2834554B1 (fr) |
WO (1) | WO2003058140A2 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9933197B2 (en) * | 2013-12-31 | 2018-04-03 | Air Liquide Canada, Inc. | Vertical counter-flow immersion freezer |
CN114992505B (zh) * | 2022-05-05 | 2024-07-09 | 上海纳萨实业发展有限公司 | 一种智能液氮罐 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1349403A (fr) * | 1962-12-06 | 1964-01-17 | Carbonique | Perfectionnement au procédé et dispositifs de refroidissement d'enceintes par pulvérisation de gaz liquéfié |
US3385073A (en) * | 1966-10-06 | 1968-05-28 | Cryo Therm Inc | Refrigeration system for shipping perishable commodities |
US5261243A (en) * | 1992-09-28 | 1993-11-16 | Lockheed Corporation | Supplemental cooling system for avionic equipment |
US6070416A (en) * | 1997-08-01 | 2000-06-06 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method and device for sequentially spraying a cryogenic liquid, cooling method and installation making application thereof |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU531696B2 (en) * | 1979-02-20 | 1983-09-01 | Commonwealth Industrial Gases Limited, The | Refigeration apparatus |
US4777733A (en) * | 1987-01-09 | 1988-10-18 | Iwatani & Co. Ltd. | Method of manufacturing shoes |
DE3884653T2 (de) * | 1987-04-03 | 1994-02-03 | Fujitsu Ltd | Verfahren und Vorrichtung zur Gasphasenabscheidung von Diamant. |
FR2616774B1 (fr) * | 1987-06-19 | 1989-10-20 | Air Liquide | Procede de fabrication d'objets en verre comportant une etape de refroidissement |
US4918928A (en) * | 1987-12-17 | 1990-04-24 | Kabushiki Kaisha Kobe Seikosho | Apparatus for testing IC devices at low temperature and cooling bag for use in testing IC devices at low temperature |
GB8802142D0 (en) * | 1988-02-01 | 1988-03-02 | Air Prod & Chem | Method of freezing liquid & pasty products & freezer for carrying out said method |
TW400342B (en) * | 1994-09-06 | 2000-08-01 | Chisso Corp | A process for producing a solid catalyst component for olefin polymerization and a process for producing an olefin polymer |
JP3716003B2 (ja) * | 1995-02-13 | 2005-11-16 | 大陽日酸株式会社 | 白煙発生装置 |
JPH09273864A (ja) * | 1996-04-02 | 1997-10-21 | Shimazu Mekutemu Kk | 熱処理炉 |
GB2314147B (en) * | 1996-06-10 | 1999-08-11 | Boc Group Plc | Cooling apparatus |
TW350761B (en) * | 1996-08-30 | 1999-01-21 | Air Prod & Chem | Method and apparatus for moulding a food product |
DE19728622A1 (de) * | 1997-07-04 | 1999-01-07 | Stephan Dipl Ing Rieth | Verfahren und Vorrichtung für die Erzeugung eines Aerosols |
US6044648A (en) * | 1997-09-19 | 2000-04-04 | Forma Scientific, Inc. | Cooling device having liquid refrigerant injection ring |
US6389828B1 (en) * | 2000-03-15 | 2002-05-21 | Michael R. Thomas | Cryogenic cooling chamber apparatus and method |
-
2002
- 2002-01-09 FR FR0200196A patent/FR2834554B1/fr not_active Expired - Fee Related
-
2003
- 2003-01-07 WO PCT/FR2003/000021 patent/WO2003058140A2/fr not_active Application Discontinuation
- 2003-01-07 CA CA002472034A patent/CA2472034A1/fr not_active Abandoned
- 2003-01-07 AU AU2003214291A patent/AU2003214291A1/en not_active Abandoned
- 2003-01-07 US US10/501,270 patent/US7444823B2/en not_active Expired - Fee Related
- 2003-01-07 EP EP03709856A patent/EP1463913A2/fr not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1349403A (fr) * | 1962-12-06 | 1964-01-17 | Carbonique | Perfectionnement au procédé et dispositifs de refroidissement d'enceintes par pulvérisation de gaz liquéfié |
US3385073A (en) * | 1966-10-06 | 1968-05-28 | Cryo Therm Inc | Refrigeration system for shipping perishable commodities |
US5261243A (en) * | 1992-09-28 | 1993-11-16 | Lockheed Corporation | Supplemental cooling system for avionic equipment |
US6070416A (en) * | 1997-08-01 | 2000-06-06 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method and device for sequentially spraying a cryogenic liquid, cooling method and installation making application thereof |
Also Published As
Publication number | Publication date |
---|---|
CA2472034A1 (fr) | 2003-07-17 |
EP1463913A2 (fr) | 2004-10-06 |
FR2834554A1 (fr) | 2003-07-11 |
FR2834554B1 (fr) | 2006-06-30 |
AU2003214291A1 (en) | 2003-07-24 |
US20050120724A1 (en) | 2005-06-09 |
WO2003058140A3 (fr) | 2004-03-11 |
US7444823B2 (en) | 2008-11-04 |
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