WO1999035402A1 - Dispositif de refroidissement - Google Patents
Dispositif de refroidissement Download PDFInfo
- Publication number
- WO1999035402A1 WO1999035402A1 PCT/CH1998/000547 CH9800547W WO9935402A1 WO 1999035402 A1 WO1999035402 A1 WO 1999035402A1 CH 9800547 W CH9800547 W CH 9800547W WO 9935402 A1 WO9935402 A1 WO 9935402A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling
- fluid
- condenser
- fan
- chambers
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
Definitions
- the present invention relates to a closed circuit cooling device for a vacuum pump with moving elements housed in a pump body, the closed circuit comprising cooling chambers traversed by a fluid, formed in the walls of the pump body, a heat exchanger supplied on one side by the cooling fluid from said chambers and on the other by an air flow, and a fluid return between one exchanger and the cooling chambers.
- the device is intended in particular for a vacuum pump with two twin screws housed in the same cylinder, meshing one inside the other, and comprising a motor connected to one of the screws
- Vacuum pumps designed for high performance require cooling and it is known to produce cooling devices as defined above.
- the coolant is water.
- closed circuit devices are distinguished from waste water systems, which are currently no longer acceptable for ecological and economic reasons. They are also different from direct air systems which are inadequate given the requirements of vacuum pumps in terms of the quantities of heat to be evacuated
- the object of the present invention is therefore to create a cooling device which avoids the above-mentioned defects.
- the device according to the invention is characterized in that the heat exchanger is a condenser, in that the flow of cooling air is generated by a fan driven by the pump motor, and in that the cooling chambers are dimensioned so that the fluid has reached its boiling point at the outlet thereof.
- the fan is mounted directly on the shaft of one of the screws and can be placed between the driven screw and the motor.
- the condenser can be cross-circulating and include an enclosure containing a network of tubes at least part of which are in an inclined position so as to be traversed from top to bottom by the vaporized cooling fluid, said enclosure being able to have a lateral opening with its upper part for the air flow inlet and, at its lower part, a connection to the fan inlet duct.
- the invention also relates to a vacuum pump with two twin screws housed in the same cylinder, meshing one inside the other, and comprising a motor connected to one of the screws, and comprising a cooling device according to the invention .
- FIG. 1 is a schematic view of the device
- FIG. 2 is a perspective view of the entire pump with its cooling circuit
- FIG. 3 is a sectional view through a horizontal plane at the level of the axes of the screws, of the pump of FIG. 2.
- the cooling device for vacuum pump shown in the drawing operates in a closed circuit according to the principle of evaporation or boiling.
- the means used for this are shown schematically in Figure 1.
- the main elements simply consist of a condenser 1 disposed at the top of the device and a set of cooling chambers 2, an expansion tank being disposed between the cooling chambers and the condenser.
- the cooling chambers are arranged in the walls of the cylindrical pump body and in its cover. They are dimensioned so that the heat released by the vacuum pump in normal operation brings the cooling fluid, which is water, to the boiling temperature, ie 100 ° C. if the pressure is close to atmospheric pressure. There is therefore formed in the chambers 2 a flow of water vapor 7 which is led by pipes 4 to the inlet, that is to say to the upper part, of the condenser 1.
- the assembly can be arranged so that the air flow passes through the condenser in the opposite direction to that represented by the arrows in FIG. 2.
- Figure 2 shows the constructive arrangement of the elements described above.
- the pump cylinder 8 is horizontally available with a discharge pipe 9 and a suction pipe 10.
- a motor 11 directly drives the shaft of one of the screws.
- Water chambers 2 are formed in the form of channels in the thickness of the walls of the cylinder 8 and the steam produced is supplied by the pipe 4, external to the cylinder, to the condenser 1.
- the latter comprises an enclosure 13, the lower part 14 rests on the cylinder 8, in transverse arrangement and whose upper part 15 arranged obliquely is connected by its upper end to the steam pipe 4.
- In the inclined part 15 and in the transverse part 14 of the enclosure 13 are arranged in networks of tubes which terminate in the return duct 6.
- the inclined upper wall of the enclosure 13 is pierced with an opening 16 through which the air flow 5 enters, the outlet of which is shown under the pump unit by the arrows 5a.
- FIG. 3 shows the cylinder 8 cut by a horizontal plane at the level of the axis of the screws 18 and 19, supported by the four bearings 20 and connected to each other by the pinions 21.
- the shaft of the screw 18 is extended in the direction of the motor 11 to which it is directly coupled and this extension carries the wheel 22 of the fan 3, the outlet volute 24 of which opens downwards, under the pump.
- the water chambers 2 which surround the turns and the bearings of the screws 18 and 19 adjacent to the discharge, where the maximum heat develops.
- the turns of the screws adjacent to the suction turn in a cylinder part which is provided with ambient air cooling fins 25.
- the wall of the cylinder 8 is crossed in the vicinity of the chambers 2 by a safety valve device 26 allowing, if necessary, to break the vacuum in the space to evacuate, possibly by entering nitrogen therein.
- the temperature sensor 17 is placed immediately above this security. In the event that excessive heating occurs in the pump, which could cause the level of the water-vapor limit surface to drop in chambers 2, this probe can either trigger an alarm, or stop the engine or intervene in another way.
- the device described has the combined advantage of very high cooling efficiency in a small volume and great simplicity.
- the high efficiency results from the fact that the heat is captured in the cooling fluid by the change of state of the latter.
- the heat of vaporization is 2250 KJ / Kg and that if the pressure remains close to atmospheric pressure the temperature will remain constantly at 100 ° C until all the water is evaporated .
- Pm power that the motor must provide.
- the release of heat comes on the one hand from losses in the motor and friction in the pump, and on the other hand from the compression of the exhaust gas.
- the heat Pc (Watt) to evacuate there must be a value of:
- a mixture of coolant can be used 25% ethylene / glycol or propylene / glycol and 75% water or any other mixture of water and adequate antifreeze liquid.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU14791/99A AU1479199A (en) | 1997-12-30 | 1998-12-22 | Cooling device |
| US09/582,335 US6371742B1 (en) | 1997-12-30 | 1998-12-22 | Cooling device |
| KR1020007007142A KR20010033628A (ko) | 1997-12-30 | 1998-12-22 | 냉각 장치 |
| EP98958770A EP1044334A1 (fr) | 1997-12-30 | 1998-12-22 | Dispositif de refroidissement |
| CA002316822A CA2316822A1 (fr) | 1997-12-30 | 1998-12-22 | Dispositif de refroidissement |
| JP2000527760A JP2002500319A (ja) | 1997-12-30 | 1998-12-22 | 冷却装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH297997 | 1997-12-30 | ||
| CH2979/97 | 1997-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999035402A1 true WO1999035402A1 (fr) | 1999-07-15 |
Family
ID=4245939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CH1998/000547 Ceased WO1999035402A1 (fr) | 1997-12-30 | 1998-12-22 | Dispositif de refroidissement |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6371742B1 (fr) |
| EP (1) | EP1044334A1 (fr) |
| JP (1) | JP2002500319A (fr) |
| KR (1) | KR20010033628A (fr) |
| CN (1) | CN1283254A (fr) |
| AU (1) | AU1479199A (fr) |
| CA (1) | CA2316822A1 (fr) |
| WO (1) | WO1999035402A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597848A (zh) * | 2014-11-18 | 2016-05-25 | 潍坊医学院 | 一种真空旋转蒸发装置 |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1013944A3 (nl) * | 2001-03-06 | 2003-01-14 | Atlas Copco Airpower Nv | Watergeinjecteerde schroefcompressor. |
| DE10156180B4 (de) * | 2001-11-15 | 2015-10-15 | Oerlikon Leybold Vacuum Gmbh | Gekühlte Schraubenvakuumpumpe |
| GB0510892D0 (en) * | 2005-05-27 | 2005-07-06 | Boc Group Plc | Vacuum pump |
| CN103245202A (zh) * | 2013-04-28 | 2013-08-14 | 陈银轩 | 一种用于清水回收装置的降温装置 |
| JP5973019B1 (ja) | 2015-03-05 | 2016-08-17 | 本田技研工業株式会社 | 沸騰冷却装置 |
| CN105003419B (zh) * | 2015-08-04 | 2018-10-02 | 合肥华凌股份有限公司 | 压缩机散热装置和冰箱 |
| CN105508254A (zh) * | 2016-01-04 | 2016-04-20 | 广东美芝制冷设备有限公司 | 压缩机组件和具有其的制冷循环装置 |
| DE102016011503A1 (de) * | 2016-09-21 | 2018-03-22 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | System für ein Nutzfahrzeug umfassend einen Schraubenkompressor sowie einen Elektromotor |
| DE102016011442A1 (de) * | 2016-09-21 | 2018-03-22 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | System für ein Nutzfahrzeug umfassend einen Schraubenkompressor sowie einen Elektromotor |
| USD865818S1 (en) * | 2017-09-20 | 2019-11-05 | Ateliers Francois, Societe Anonyme | Compressor part |
| GB2570349B (en) * | 2018-01-23 | 2021-01-27 | Edwards Ltd | Vacuum apparatus casings and methods of manufacturing vacuum apparatus casings |
| CN108487944A (zh) * | 2018-02-24 | 2018-09-04 | 安徽全科技有限公司 | 车辆节能发电系统 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2083611A (en) * | 1931-12-05 | 1937-06-15 | Carrier Corp | Cooling system |
| US2449110A (en) * | 1946-11-04 | 1948-09-14 | Le Roi Company | Cooling system for internal-combustion engines |
| US2667046A (en) * | 1951-03-07 | 1954-01-26 | Wade Engineering Ltd | Cooler for gas leaving roots blowers |
| JPS57384A (en) * | 1980-06-04 | 1982-01-05 | Hitachi Ltd | Cooler in compressor |
| US4722304A (en) * | 1986-01-10 | 1988-02-02 | Nissan Motor Co., Ltd. | Cooling system for automotive engine or the like |
| JPS63162980A (ja) * | 1986-12-26 | 1988-07-06 | Matsushita Refrig Co | 圧縮機 |
| JPS63201396A (ja) * | 1987-02-18 | 1988-08-19 | Matsushita Refrig Co | 回転式圧縮機 |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2017216B (en) * | 1978-03-13 | 1982-10-27 | Imi Fluidair Ltd | Rotary positive-displacement fluid-machines |
| US4222436A (en) * | 1978-12-21 | 1980-09-16 | Dynatherm Corporation | Heat exchange apparatus |
| JPS566091A (en) * | 1979-06-26 | 1981-01-22 | Hitachi Koki Co Ltd | Cooling device of closed type air compressor |
| JPS6060005B2 (ja) * | 1980-07-03 | 1985-12-27 | 日産自動車株式会社 | エンジンの冷却装置 |
| JPS6060293A (ja) * | 1983-09-12 | 1985-04-06 | Hitachi Ltd | 無給油式回転形圧縮機装置 |
| JPS60256589A (ja) * | 1984-06-04 | 1985-12-18 | Hitachi Ltd | 給油式スクリユ−圧縮機の空冷冷却装置 |
| US4680001A (en) * | 1984-11-28 | 1987-07-14 | Application Engineering Corporation | Passive mold cooling and heating system |
| US4737087A (en) * | 1984-12-10 | 1988-04-12 | Barmag Ag | Drive shaft seal for gear pump and method |
| JPH0228681B2 (ja) * | 1985-07-05 | 1990-06-26 | Maekawa Seisakusho Kk | Sukuryuushikikaitensochi |
| CA1279856C (fr) * | 1985-10-09 | 1991-02-05 | Akira Suzuki | Compresseur tournant non-huile |
| US4929161A (en) * | 1987-10-28 | 1990-05-29 | Hitachi, Ltd. | Air-cooled oil-free rotary-type compressor |
| JPH01300073A (ja) * | 1988-05-27 | 1989-12-04 | Hitachi Ltd | 空冷給油式庄縮機 |
| FR2637655B1 (fr) * | 1988-10-07 | 1994-01-28 | Alcatel Cit | Machine rotative du type pompe a vis |
| US5028220A (en) * | 1990-08-13 | 1991-07-02 | Sullair Corpoation | Cooling and lubrication system for a vacuum pump |
| FR2669962B1 (fr) * | 1990-11-30 | 1994-09-16 | Renault | Procede de refroidissement par evaporation pour moteur a combustion interne et dispositif de mise en óoeuvre. |
| JPH04232395A (ja) * | 1990-12-28 | 1992-08-20 | Honda Motor Co Ltd | ロータクリアランスの調整方法及び装置 |
| DE4122889C1 (fr) * | 1991-07-11 | 1992-12-17 | Bitzer Kuehlmaschinenbau Gmbh & Co Kg, 7032 Sindelfingen, De | |
| AT408969B (de) * | 1996-02-13 | 2002-04-25 | Greiner & Soehne C A | Verfahren sowie vorrichtung zum kühlen und gegebenenfalls kalibrieren von gegenständen aus kunststoff |
-
1998
- 1998-12-22 CA CA002316822A patent/CA2316822A1/fr not_active Abandoned
- 1998-12-22 JP JP2000527760A patent/JP2002500319A/ja active Pending
- 1998-12-22 CN CN98812799A patent/CN1283254A/zh active Pending
- 1998-12-22 AU AU14791/99A patent/AU1479199A/en not_active Abandoned
- 1998-12-22 WO PCT/CH1998/000547 patent/WO1999035402A1/fr not_active Ceased
- 1998-12-22 EP EP98958770A patent/EP1044334A1/fr not_active Withdrawn
- 1998-12-22 US US09/582,335 patent/US6371742B1/en not_active Expired - Fee Related
- 1998-12-22 KR KR1020007007142A patent/KR20010033628A/ko not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2083611A (en) * | 1931-12-05 | 1937-06-15 | Carrier Corp | Cooling system |
| US2449110A (en) * | 1946-11-04 | 1948-09-14 | Le Roi Company | Cooling system for internal-combustion engines |
| US2667046A (en) * | 1951-03-07 | 1954-01-26 | Wade Engineering Ltd | Cooler for gas leaving roots blowers |
| JPS57384A (en) * | 1980-06-04 | 1982-01-05 | Hitachi Ltd | Cooler in compressor |
| US4722304A (en) * | 1986-01-10 | 1988-02-02 | Nissan Motor Co., Ltd. | Cooling system for automotive engine or the like |
| JPS63162980A (ja) * | 1986-12-26 | 1988-07-06 | Matsushita Refrig Co | 圧縮機 |
| JPS63201396A (ja) * | 1987-02-18 | 1988-08-19 | Matsushita Refrig Co | 回転式圧縮機 |
Non-Patent Citations (3)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 006, no. 058 (M - 122) 15 April 1982 (1982-04-15) * |
| PATENT ABSTRACTS OF JAPAN vol. 012, no. 428 (M - 762) 11 November 1988 (1988-11-11) * |
| PATENT ABSTRACTS OF JAPAN vol. 012, no. 484 (M - 776) 16 December 1988 (1988-12-16) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597848A (zh) * | 2014-11-18 | 2016-05-25 | 潍坊医学院 | 一种真空旋转蒸发装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| AU1479199A (en) | 1999-07-26 |
| CN1283254A (zh) | 2001-02-07 |
| JP2002500319A (ja) | 2002-01-08 |
| EP1044334A1 (fr) | 2000-10-18 |
| US6371742B1 (en) | 2002-04-16 |
| KR20010033628A (ko) | 2001-04-25 |
| CA2316822A1 (fr) | 1999-07-15 |
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