WO2003098047A1 - Pompe a vide - Google Patents
Pompe a vide Download PDFInfo
- Publication number
- WO2003098047A1 WO2003098047A1 PCT/JP2003/006260 JP0306260W WO03098047A1 WO 2003098047 A1 WO2003098047 A1 WO 2003098047A1 JP 0306260 W JP0306260 W JP 0306260W WO 03098047 A1 WO03098047 A1 WO 03098047A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- vacuum pump
- heat
- heat insulating
- exhaust chamber
- Prior art date
Links
Classifications
-
- 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
-
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
-
- 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
- F04C2240/00—Components
- F04C2240/10—Stators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/04—PTFE [PolyTetraFluorEthylene]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2251/00—Material properties
- F05C2251/04—Thermal properties
- F05C2251/048—Heat transfer
Definitions
- the present invention relates to a structure for protecting a bearing or the like from heat generation in an exhaust chamber of a vacuum pump.
- the present invention relates to a vacuum pump for exhausting a reactive gas such as a semiconductor process while maintaining the exhaust chamber at a high temperature. This is related to a structure that prevents the shaft seal from breaking at high temperatures.
- FIG. 7 illustrates a vacuum pump having a pair of screws.
- Housing is main casing 5 and both ends It is composed of bearing cases 16 and 1'7 which are fixed to the bearing case.
- Numerals 6 and 7 are rotors rotatably fixed to the housing via bearings 1, 2, 3 and 4.
- a motor 8 for rotating the rotor 6 is attached to an end of the rotor 6. The rotor 7 rotates in synchronization with the rotor 6 via timing gears 20 and 21.
- An exhaust chamber 11 for exhausting gas is provided in a housing 5 containing the ports 6 and 7 and seals the exhaust chamber and bearings 1, 2, 3, and 4 filled with lubricating oil.
- the shaft seals 12, 13, 14 and 15 are arranged so that the exhaust chamber is not contaminated with oil.
- a housing for cooling is provided by providing a cooling water passage near the bearing to cool the bearing, thereby cooling the housing.
- the problem is that the heat inside the exhaust chamber is also taken away.
- it is necessary to keep the exhaust chamber at a high temperature. It is necessary to supply more heat energy to the housing than the amount of heat to be supplied, and there is also a problem that a vicious cycle occurs in that energy consumption increases.
- a shaft structure having a shaft seal there is a possibility that the problem that the shaft seal is broken by heat may also occur.
- an object of the present invention is to provide a vacuum pump having a drive unit such as a bearing in which the temperature of the bearing unit and the shaft seal unit becomes high even if the temperature of the exhaust chamber is raised to prevent products during the discharge of reactive gas.
- the purpose is to provide a structure that prevents destruction. Disclosure of the invention Means for Solving the Problems
- the present invention in order to solve the above problems, has a vacuum exhaust chamber, means for introducing a processing gas into the vacuum exhaust chamber, and exhausting the processing gas outside the vacuum exhaust chamber.
- a vacuum pump having an exhaust means, and a housing for partitioning the vacuum exhaust chamber from the outside, wherein a rotor is rotatably fixed via a bearing in the housing;
- a heat insulating means is provided between the two.
- the heat insulation means can be easily processed and mounted in a plate shape that matches the shape of the housing end face of the vacuum pump.However, if the heat generation is not so large, heat insulation means is installed in a part close to the bearing. You can do it.
- a material having a lower thermal conductivity than the material of the housing is used as the heat insulating means.
- the heat insulating means a material which is strong enough to prevent destruction even when sandwiched between a main casing and a metal such as a bearing case is suitable.
- the heat insulation means include resin and ceramic.
- the invention of claim 3 it is characterized in that a resin having a lower thermal conductivity than the material of the housing and a high corrosion resistance is used as the heat insulating means.
- Teflon (trademark) is used as a material for the heat insulation means that is strong enough to prevent breakage even when sandwiched between the main casing and the metal such as a bearing case and has a large heat insulation effect, and is easy to process and install. ).
- a hollow heat insulating member is used as the heat insulating means.
- the space in the hollow part is sealed by vacuum, Enclose gas, liquid or material such as low atmosphere. It is also effective for heat insulation to make the interior of the hollow space communicate with the vacuum exhaust chamber to create a vacuum.
- a support member for the step heating means is provided on a heat insulating means disposed between the housing to which the bearing is fixed and the housing on the vacuum exhaust chamber side.
- a supporting member longer than the thickness of the heat insulating means is disposed between the housing member and the bearing case, and a strong force is applied to the heat insulating means from the housing. This can be resolved by not adding them.
- a housing member, a bearing case, and a port hole for fixing the heat insulating means a supporting force larger than the thickness of the heat insulating means is provided in a hole through which the port passes through the heat insulating means. Can be solved by inserting.
- a member having high thermal conductivity is provided between the heat insulating means and the evacuation chamber.
- the high thermal conductivity here means higher than that of the heat insulating material, and it is preferable that the thermal conductivity is equal to or higher than the thermal conductivity of the main casing forming the evacuation chamber.
- the member having a high thermal conductivity may be arranged as an exhaust chamber end wall so as to directly contact the exhaust chamber.
- a second heat insulating means is provided on an outer periphery of the housing.
- the first heat insulating means provided at the end of the rotating shaft of the mouth, that is, at the end of the eight housings is formed into a plate shape that matches the shape of the end,
- the exhaust chamber can be completely covered with the heat insulating material.
- heat conduction means is provided on the outer periphery of the housing or / and the housing.
- the heat conducting means is heat conducting It can also be achieved by using a material having a high rate as the material of the housing. ⁇
- a heat pipe is used as the heat conducting means.
- the heat pipe can be arranged by drilling a hole in the housing parallel to the rotation axis to fill the working fluid, or by opening a hole (groove) in the housing to accommodate the existing heat pipe and installing the existing heat pipe. And fixing the existing heat pipe to the housing.
- a metal having a high thermal conductivity is used as the heat conducting means.
- Metals with high thermal conductivity include aluminum, gold, silver, copper, beryllium, brass, and alloys thereof.
- an evacuation chamber a means for introducing a processing gas into the evacuation chamber, an evacuation means for exhausting the processing gas out of the evacuation chamber, and an evacuation chamber.
- a housing for partitioning the outside from the outside, wherein a rotor is rotatably fixed in the housing via bearings, wherein heat conduction means is provided on the outer periphery of the housing or / and the housing.
- a metal having a higher thermal conductivity than a material of the housing is used as the heat conductive means.
- the heat conduction means there are a method using a heat pipe and a method using a metal having good heat conductivity.
- Heat The pipes can be arranged by drilling a hole parallel to the rotation axis in the housing and filling the working fluid, for example, by directly processing eight housings to form a heat pipe in the housing, or by using existing heat pipes.
- the heat pipe may have a flat shape or a cylindrical shape.
- a metal plate with good thermal conductivity is pressed to fit the shape of the housing, and a plate-shaped metal is attached to the outer periphery of the housing.
- FIG. 1 is a front sectional view of the vacuum pump of the 'first embodiment' of the present invention.
- FIG. 2 is a side sectional view of a vacuum pump according to a second embodiment of the present invention.
- FIG. 3 is a sectional view taken along line AA of FIG. 2 of the second embodiment of the present invention. '
- FIG. 4 is a cross-sectional view perpendicular to the axis of a vacuum pump according to a third embodiment of the present invention.
- FIG. 5 is a front sectional view of a port portion of a vacuum pump according to a fourth embodiment of the present invention.
- FIG. 6 is a front sectional view of an upper bearing portion of a vacuum pump according to a fifth embodiment of the present invention.
- FIG. 7 is a front sectional view of a conventional vacuum pump. BEST MODE FOR CARRYING OUT THE INVENTION
- the vacuum pump 100 includes screw rotors 101 and 102.
- the screw rotors 101 and 102 are housed in a rotor housing chamber formed inside the housing. More specifically, the screw rotor 101 is rotatably supported on the housing by bearings 104 and 105, and the screw port 102 is screwed by bearings 106 and 107. It is rotatably supported by the housing. Between the exhaust chamber 111 and bearings 104, 105, 106 and 107 filled with lubricating oil, bearings 104, 105, 106 and This prevents leakage of lubricating oil from 107 and contaminates the exhaust chamber with the lubricating oil, and also generates reactive gas from inside the housing to bearings 104, 105, 106, and 107. Shaft seals 112, 113, 114 and 115 are arranged to prevent foreign matter from entering.
- one end of the screw rotor 101 and the screw rotor 102 is attached to one end of the screw rotor 101 and one of the screw openings 102 along with the rotation of one of the screw openings 102.
- the timing gears 109 and 110 for rotating the other of the evening rotor 101 and the screw rotor 102 are fixed so as to engage with each other.
- a motor 108 is physically connected to one end of the screw rotor 102.
- the housing has an intake port 103a for sucking the compressible fluid from the outside of the housing into the housing, and the exhaust port 111 communicates with the outside of the housing through the intake port 103a.
- An exhaust port 103 e for discharging the compressible fluid from the inside of the housing to the outside of the housing communicates with the outside of the housing.
- the intake port 103a is in communication with a not-shown container to be evacuated, and the exhaust port 103e is in communication with an exhaust gas processing device (not shown) or the outside air.
- the intake side bearing case 1 2 1, heat insulation member 1 2 2, intake side end wall member 1 2 3, main casing 1 2 4, exhaust side end wall member 1 2 5, heat insulation member 1 2 6, exhaust side
- the bearing case is formed from 127.
- Bearings 104, 105, 106 and 107 for supporting the rotor are installed in the intake-side bearing case 122 and the exhaust-side bearing case 127.
- Insulation members 1 2 2 and 1 2 6 are made of a material with low thermal conductivity. And made of, for example, strong heat-resistant resin.
- the exhaust chamber 1 1 1 through which the reactive gas flows is a heat-insulating member 1 2 2 and an intake-side end wall member 1 2 3 made of a material having higher thermal conductivity than the heat-insulating member 1 2 6.
- the exhaust port 110 is formed.
- the heat generated by the compression of the exhaust gas can be transmitted to the entire intake-side end wall member 123, the main casing 122, and the exhaust-side end wall member 125. Only around 103 e becomes high temperature, and it is possible to suppress the possibility that the bearings 105 and 107 and the shaft seals 113 and 115 are destroyed by heat. In addition, the temperature of the entire housing surface in contact with the exhaust chamber can be raised, thus reducing the production of products.
- the heat insulating members 122 and 126 are made of a heat insulating material having a low thermal conductivity, the end wall member 123 for the intake side, the main casing 122 and the fifth housing member 1 are provided. Even when it is necessary to maintain 25 at a high temperature, the possibility that the bearings 105 and 107 and the shaft seals 113 and 115 are destroyed by heat can be suppressed.
- the outer periphery of the intake-side end wall member 123, the main casing 124, and the exhaust-side end wall member 125 is covered with a heat-insulating member 128 made of a heat-insulating material.
- the heat of the end wall member 1 2 3, the main casing 1 2 4 and the exhaust side end wall member 1 2 5 can be suppressed from being radiated to the outside air, and the intake side end wall member 1 2 3 and the main casing 1 2 4 and the exhaust side end wall member 1 2 5 can be kept at a high temperature.
- the intake side end wall member 1 2 3 By attaching the heating means 234 to all or part of the casing 124 and the exhaust-side end wall member 125, the intake-side end wall member 123, the main casing The thing 124 and the exhaust-side end wall member 125 can be maintained at a high temperature.
- a heating means the entire outer periphery of the main casing 124 is covered with a sheet-type heater, or an arbitrary portion of the end wall member 123 of the intake side or the main casing 124 (the intake side having a lower temperature is used). (Optimal) is to install a heater.
- the heating side is used to separate the intake side end wall member 123, the main casing 122 and the exhaust side end wall member 125.
- the exhaust chamber By heating and maintaining the exhaust chamber at such a high temperature that no products can be produced, it is possible to use a vacuum pump that produces few products.
- heat pipes are embedded in the interior of each housing to increase the thermal conductivity of the inlet side end wall member 1, 2 3, the main casing 1 2 4, and the exhaust side end wall member 1 2 5.
- the temperature of the intake-side end wall member 123, the main casing 122, and the exhaust-side end wall member 125 can be made uniform by the method of bringing the end wall members into contact.
- a groove may be formed in the housing and metal such as copper alloy with very high thermal conductivity may be embedded in the groove, or a single or a single drill may be used inside the housing.
- metal such as copper alloy with very high thermal conductivity
- a single or a single drill may be used inside the housing.
- multiple holes or grooves are opened and molten metal with good thermal conductivity is poured.
- a metal plate such as copper having a very high thermal conductivity is fixed to the surfaces of the intake side end wall member 123, the main casing 122 and the exhaust side end wall member 125 so that the intake side end wall can be formed.
- the thermal conductivity of the member 123, the main casing 124, and the exhaust-side end wall member 125 can be further improved.
- flow passages 230 and 231 which allow cooling water to flow around the bearings of the intake-side bearing case 1 21 and the exhaust-side bearing case 1 27, near the bearing ⁇ shaft seal
- the bearing can be cooled by flowing water, so that the effect of preventing breakage due to thermal expansion can be increased.
- the temperature of the cooling water becomes higher than the temperature determined in advance by the temperature information of the temperature sensors 2 3 2 and 2 3 3 attached to the bearing, it is necessary to control the flow of the cooling water and the flow rate By controlling the temperature, the temperature of the bearing can be controlled efficiently.
- the intake-side bearing case 1 2 1 and the exhaust-side bearing case 1 2 7 which are cooled by the housing heat-insulating member 1 2 2 and the heat-insulating member 1 2 6 which are the heat insulating means are used as the intake-side end wall member 1. 23, It is possible to prevent heat from being taken from the main casing 1 24 and the exhaust-side end wall member 125 to lower the temperature inside the exhaust chamber.
- FIG. Figure 2 shows the axial cross section of one screw rotor of a screw set vacuum pump with a pair of screw rotors. Is shown.
- FIG. 3 is a sectional view taken along line AA of FIG.
- the screw 25 1 is rotatably fixed in the housing 25 3 via bearings 255 and 25 7.
- Reference numeral 267 denotes an intake port
- reference numeral 269 denotes an exhaust port.
- Reference numerals 255 and 261 are heat insulating materials, which prevent heat in the exhaust chamber from being transmitted to the vicinity of the bearings 255 and 257 to destroy the bearings 255 and 257.
- projecting portions 263 and 265 are provided on the housing 253, the surface is formed flat, and the projecting portions 263 and 265 are bridged.
- Metal plates 271 and 273 made of a metal having high thermal conductivity such as pure copper or pure aluminum or an alloy thereof are fixed by a predetermined means. Further, by smoothing the flat portions of the protrusions 263 and 265, thermal contact between the metal plates 271 and 273 and the protrusions can be improved. With this configuration, heat can be transferred from the exhaust chamber side, where the temperature of the housing of the vacuum pump becomes high, to the intake side, where the temperature does not rise so much, and the housing can be evenly heated.
- FIG. 4 Another heat equalizing means will be described as a third embodiment in FIG. Since the basic structure of the vacuum pump is the same as that of the second embodiment, the cross-sectional shape corresponding to FIG. 3 will be described. 403 and 405 are cross sections of the screw mouth.
- Reference numeral 401 denotes a housing 401 in which the screw is housed.
- the housing 401 has a uniform thermal structure, and the housing 401 is made of a metal having a high thermal conductivity such as an alloy such as copper or aluminum. Covered with 7.
- the metal 407 was processed into a cylindrical housing shape, fitted, or added so that the metal divided into a plurality of pieces would have the shape of metal 40.7 when attached to the housing 401. It can be formed by using a material or by further inserting metal 407 into the completed housing 401.
- FIG. 5A shows a case where the hollow heat insulating member in this embodiment is used. Even if the hollow interior 301 is filled with air or a gas or liquid with low thermal conductivity, the heat insulation effect is large.
- the inside of the hollow 301 of the hollow heat insulating material is vacuum-tightly closed, and a hollow exhaust hole 302 communicating with the vacuum exhaust chamber is provided as shown in FIG. By doing so, the heat insulation effect can be further improved.
- a screw type rotor is taken as an example, but a roots type in which the cross section of the rotor is a cocoon type, and a cross type in which the cross section of the mouth is a curved ball type.
- the present invention is applicable to all vacuum pumps having a structure in which a rotor is instructed by a bearing and rotates, such as a set.
- Reference numeral 601 denotes a bearing case to which the bearing ⁇ shaft seal is fixed
- 603 denotes a heat insulating member made of a soft or brittle material
- 605 and 607 denote housing members that become hot.
- Reference numeral 609 denotes a cylindrical holding member made of a material such as high-strength metal or ceramic.
- the housing first member 601, heat insulating means 603, and housing members 605 and 607 are integrated. Porto 6 1 1 for fixing passes through.
- the holding member 6 0 9 It is optimal to have an axial length greater than the thickness of the heat insulating member 603, but this is not the case when the heat insulating means is a flexible material. By adopting such a configuration, it is possible to prevent the bearing case '601 and the housing member 605 from applying a strong force to the heat insulating member 603 when the port is fastened.
- a vacuum exhaust chamber means for introducing a processing gas into the vacuum exhaust chamber, and exhaust means for exhausting the processing gas outside the vacuum exhaust chamber.
- a housing for partitioning the vacuum exhaust chamber from the outside, and a rotor in which the rotor is rotationally fixed via a bearing in the housing, between the vacuum exhaust chamber and the bearing portion.
- the heat insulating means since a resin having a lower thermal conductivity and a higher corrosion resistance than the material of the housing is used as the heat insulating means, it is easy to process and install, and has a large heat insulating effect. Can get Even when the pump exhausts highly corrosive gas, it can prevent the insulation material from losing airtightness and strength due to corrosion.
- the hollow space can be filled with a gas or liquid having a low thermal conductivity, or can be a heat insulating member. Can be inserted, which is effective for heat insulation.
- the heat insulating means provided between the bearing case to which the bearing is fixed and the housing is provided with a support member for the step heat means, so that a soft material is used as the heat insulating means. Can be used, increasing the choice of insulation.
- the provision of the heat conduction means on the outer periphery of the housing or / and the housing makes it possible to easily increase the temperature near the heat insulating means in the exhaust chamber, The temperature can be made more uniform.
- the exhaust chamber can be completely covered with the heat insulating material by providing the second heat insulating means on the outer periphery of the housing, and the temperature of the exhaust chamber can be controlled by the temperature.
- the temperature can be kept high enough that no reaction product is produced even when the gas flows.
- the heat transfer means is provided on the outer periphery of the housing or / and the housing, so that heat can be transferred from a high-temperature portion to a low-temperature portion on the outer periphery of the housing.
- the temperature of the portion of the housing that is in contact with the exhaust chamber can be set to a uniform temperature at which reaction products are not easily generated even when the reactive gas flows.
- the heat conductivity of the housing can be greatly increased by using a heat pipe as the heat conduction means.
- a heat pipe as the heat conduction means.
- heat can be easily transferred by covering the housing with a metal which is easy to process. .
- a vacuum exhaust chamber there is a vacuum exhaust chamber, means for introducing a processing gas into the vacuum exhaust chamber, exhaust means for exhausting the processing gas outside the vacuum exhaust chamber, and A vacuum pump having a housing that separates the outside from the outside, wherein a port is rotatably fixed in the housing via a bearing, wherein heat conduction means is provided on the outer periphery of the housing or Z and the housing. Heat is transferred from the high temperature part of the housing to the low temperature part, and the temperature of the housing can be equalized.
- the heat conduction means can be easily processed.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Non-Positive Displacement Air Blowers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/515,221 US20050254969A1 (en) | 2002-05-20 | 2003-05-20 | Vacuum pump |
JP2004505543A JPWO2003098047A1 (ja) | 2002-05-20 | 2003-05-20 | 真空ポンプ |
AU2003234835A AU2003234835A1 (en) | 2002-05-20 | 2003-05-20 | Vacuum pump |
EP03728116A EP1533526A1 (en) | 2002-05-20 | 2003-05-20 | Vacuum pump |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002145320 | 2002-05-20 | ||
JP2002-145320 | 2002-05-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003098047A1 true WO2003098047A1 (fr) | 2003-11-27 |
Family
ID=29545082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/006260 WO2003098047A1 (fr) | 2002-05-20 | 2003-05-20 | Pompe a vide |
Country Status (7)
Country | Link |
---|---|
US (1) | US20050254969A1 (ja) |
EP (1) | EP1533526A1 (ja) |
JP (1) | JPWO2003098047A1 (ja) |
CN (1) | CN1656316A (ja) |
AU (1) | AU2003234835A1 (ja) |
TW (1) | TWI277696B (ja) |
WO (1) | WO2003098047A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021063472A (ja) * | 2019-10-15 | 2021-04-22 | 株式会社荏原製作所 | 真空ポンプ装置 |
WO2023106154A1 (ja) * | 2021-12-06 | 2023-06-15 | エドワーズ株式会社 | 真空ポンプおよび良熱伝導性部品 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008063281A1 (de) * | 2008-12-29 | 2010-07-01 | Oerlikon Leybold Vacuum Gmbh | Vakuumpumpe |
GB2487376A (en) * | 2011-01-19 | 2012-07-25 | Edwards Ltd | Two material pump stator for corrosion resistance and thermal conductivity |
JP5502040B2 (ja) * | 2011-09-09 | 2014-05-28 | 株式会社神戸製鋼所 | タイヤ加硫方法、及びタイヤ加硫機 |
TWI586893B (zh) * | 2011-11-30 | 2017-06-11 | Edwards Japan Ltd | Vacuum pump |
CN104632630B (zh) * | 2013-11-13 | 2017-01-11 | 中国科学院沈阳科学仪器股份有限公司 | 一种罗茨干泵热膨胀的控制系统及方法 |
GB2563595B (en) * | 2017-06-19 | 2020-04-15 | Edwards Ltd | Twin-shaft pumps |
WO2020082095A2 (en) | 2018-10-19 | 2020-04-23 | Hai Nguyen | Suction/compression rotating mechanism, rotary compressor and rotary engine |
EP3808983B1 (en) * | 2019-10-15 | 2024-01-03 | Ebara Corporation | Vacuum pump with heater in the side cover |
CN114542425A (zh) * | 2020-11-26 | 2022-05-27 | 中国科学院微电子研究所 | 半导体加工工艺、抽真空装置和半导体工艺设备 |
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JPH02149791A (ja) * | 1988-10-07 | 1990-06-08 | Alcatel Cit | ねじポンプタイプの回転機械 |
JPH0717978U (ja) * | 1993-08-27 | 1995-03-31 | 株式会社島津製作所 | ドライ真空ポンプ |
JPH0791387A (ja) * | 1993-09-24 | 1995-04-04 | Matsushita Electric Ind Co Ltd | 真空ポンプ |
JPH0738688U (ja) * | 1993-12-20 | 1995-07-14 | オリオン機械株式会社 | 無給油式回転ベーンポンプ |
JPH11315794A (ja) * | 1998-05-01 | 1999-11-16 | Kashiyama Kogyo Kk | 冷却機構付スクリュードライ真空ポンプ |
JP2000314386A (ja) * | 1999-04-30 | 2000-11-14 | Tochigi Fuji Ind Co Ltd | スクリュー式流体機械 |
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US1590964A (en) * | 1925-07-14 | 1926-06-29 | Edward T Street | Pump |
US3101171A (en) * | 1961-02-27 | 1963-08-20 | Ingersoll Rand Co | Axial flow compressor |
ES2041033T3 (es) * | 1988-06-16 | 1993-11-01 | Hwt Gesellschaft Fur Hydrid- Und Wasserstofftechnik Mbh | Procedimiento para la produccion de un vacio. |
US5101888A (en) * | 1990-12-03 | 1992-04-07 | Rockwell International Corporation | Heat pipe systems |
JP3275431B2 (ja) * | 1993-03-25 | 2002-04-15 | ダイキン工業株式会社 | フッ素樹脂成形体およびその製法 |
JPH10318168A (ja) * | 1997-05-22 | 1998-12-02 | T D Giken:Kk | 容積移送型ポンプ |
DE10156180B4 (de) * | 2001-11-15 | 2015-10-15 | Oerlikon Leybold Vacuum Gmbh | Gekühlte Schraubenvakuumpumpe |
JP2003269367A (ja) * | 2002-03-13 | 2003-09-25 | Boc Edwards Technologies Ltd | 真空ポンプ |
-
2003
- 2003-05-20 EP EP03728116A patent/EP1533526A1/en not_active Withdrawn
- 2003-05-20 TW TW092113601A patent/TWI277696B/zh not_active IP Right Cessation
- 2003-05-20 US US10/515,221 patent/US20050254969A1/en not_active Abandoned
- 2003-05-20 JP JP2004505543A patent/JPWO2003098047A1/ja not_active Ceased
- 2003-05-20 WO PCT/JP2003/006260 patent/WO2003098047A1/ja active Application Filing
- 2003-05-20 AU AU2003234835A patent/AU2003234835A1/en not_active Abandoned
- 2003-05-20 CN CN03811707.XA patent/CN1656316A/zh active Pending
Patent Citations (6)
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JPH02149791A (ja) * | 1988-10-07 | 1990-06-08 | Alcatel Cit | ねじポンプタイプの回転機械 |
JPH0717978U (ja) * | 1993-08-27 | 1995-03-31 | 株式会社島津製作所 | ドライ真空ポンプ |
JPH0791387A (ja) * | 1993-09-24 | 1995-04-04 | Matsushita Electric Ind Co Ltd | 真空ポンプ |
JPH0738688U (ja) * | 1993-12-20 | 1995-07-14 | オリオン機械株式会社 | 無給油式回転ベーンポンプ |
JPH11315794A (ja) * | 1998-05-01 | 1999-11-16 | Kashiyama Kogyo Kk | 冷却機構付スクリュードライ真空ポンプ |
JP2000314386A (ja) * | 1999-04-30 | 2000-11-14 | Tochigi Fuji Ind Co Ltd | スクリュー式流体機械 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021063472A (ja) * | 2019-10-15 | 2021-04-22 | 株式会社荏原製作所 | 真空ポンプ装置 |
JP7261139B2 (ja) | 2019-10-15 | 2023-04-19 | 株式会社荏原製作所 | 真空ポンプ装置 |
WO2023106154A1 (ja) * | 2021-12-06 | 2023-06-15 | エドワーズ株式会社 | 真空ポンプおよび良熱伝導性部品 |
JP2023083773A (ja) * | 2021-12-06 | 2023-06-16 | エドワーズ株式会社 | 真空ポンプおよび良熱伝導性部品 |
Also Published As
Publication number | Publication date |
---|---|
TWI277696B (en) | 2007-04-01 |
AU2003234835A1 (en) | 2003-12-02 |
CN1656316A (zh) | 2005-08-17 |
JPWO2003098047A1 (ja) | 2005-09-15 |
US20050254969A1 (en) | 2005-11-17 |
TW200403392A (en) | 2004-03-01 |
EP1533526A1 (en) | 2005-05-25 |
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