EP1936202B1 - Vakuumpumpe - Google Patents
Vakuumpumpe Download PDFInfo
- Publication number
- EP1936202B1 EP1936202B1 EP07022565.1A EP07022565A EP1936202B1 EP 1936202 B1 EP1936202 B1 EP 1936202B1 EP 07022565 A EP07022565 A EP 07022565A EP 1936202 B1 EP1936202 B1 EP 1936202B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- hood
- housing
- vacuum pump
- pump
- 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.)
- Not-in-force
Links
Images
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
- F04C29/047—Cooling of electronic devices installed inside the pump housing, e.g. inverters
-
- 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
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
- F04C18/3442—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the inlet and outlet opening
-
- 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
- F04C2220/00—Application
- F04C2220/10—Vacuum
-
- 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
- F04C2240/30—Casings or housings
-
- 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
- F04C2240/80—Other components
- F04C2240/808—Electronic circuits (e.g. inverters) installed inside the machine
Definitions
- the invention relates to a vacuum pump with housing, in which pumping system and motor are housed, with gas inlet and gas outlet according to the preamble of claim 1.
- a vacuum pump is for example from EP 0 459 116 known.
- Vacuum pumps generate heat in their interior due to the compression of the pumped gas. However, this is not the only heat source. In most designs, vacuum pumps have moving components that are held in motion by a drive. This drive has an efficiency, ie there is loss of power, which must be dissipated as heat in the rule. Add to that the friction in camps and a lot more. The heat is released to the environment of the vacuum pump and is a source of danger to its user. There is now a need to protect the user of the vacuum pump. In the prior art handles are proposed, where the user can move the vacuum pump shortly after operation, ie in the heated state. However, this does not protect against contact and is therefore inadequate.
- the DE 40 38 872 A1 describes a similar air-cooled rotary machine, but in which no motor is provided in an inner housing and in which between the inner and an outer housing, an intermediate member in the form of a foaming is.
- WO 03/042542 A1 and the DE 198 49 098 A1 describe a similar vacuum pump with a further housing which surrounds an inner housing, but without intermediate component between the housings.
- a hood which surrounds the housing of the vacuum pump at least partially, the contact of heat leading components can be prevented, so that the user of the vacuum pump is protected. In the area of hot parts of the housing so surfaces are created, where a touch can be done safely. This can save costs incurred by an unnecessarily large design of the hood.
- a hood is simple, and by cost-effective recesses can be ensured accessibility of all controls.
- the housing of the vacuum pump has a plurality of sections, wherein the pumping system and control electronics in different Sections are arranged and the control electronics is at least partially not covered by the hood. This improves the heat balance because the pumping system is a source of heat while the control electronics have electronic components that should be kept away from heat otherwise they will age too quickly.
- an intermediate component is arranged between the housing and the hood so that the housing and the hood are not in surface-contact contact. This reduces the heat input into the hood. At the same time a distance between the housing and hood is created by the intermediate member, which creates a gap. This space is filled with air, which acts as an insulating air cushion when forced ventilation does not force an exchange of air.
- the intermediate component contains material components which dampen mechanical vibrations introduced into the intermediate component. This prevents that the hood gets into vibration, resulting in a total quieter performance of the vacuum pump. Less noise is emitted to the environment, which is particularly advantageous for use in the laboratory environment, since operating personnel are present.
- the intermediate component contains material components which act as a thermal barrier. As a result, the heat input is further reduced in the hood.
- the hood is designed and arranged so that it causes the steering of the gas flow of a fan through at least a portion of the housing arranged cooling fins. As a result, the cooling of the housing is more efficient, at the same time an internal cooling of the hood takes place.
- the hood has at least one opening through which the fan can suck in air and then convey into the channels.
- This opening provides effective air intake while providing freedom in fan placement.
- this can be arranged so close to the cooling fins and does not necessarily have to be provided at the hood end.
- the first figure shows a vacuum pump, which is constructed of four sections and surrounded by a hood 1.
- This hood is shown in the figure part a) in the disassembled state, while it is mounted in the imaging part b) on the vacuum pump and surrounds a part of the housing of this vacuum pump.
- the vacuum pump itself rests on a foot 10.
- the sections of the vacuum pump contain different functional units.
- the control section 2 contains the control electronics, which processes the mains voltage for the energization of the coils of the drive.
- a fan 6 is arranged, which sucks in air and promotes in the space between the housing provided on the cooling ribs 8, whereby a cooling effect is achieved.
- the suction and conveying effect of the fan is illustrated by the dashed arrows.
- a peripheral section 4 has the gas connections, ie gas inlet 9 and outlet. At the periphery of the foot 10 is also arranged. This has means, such as elastomer body, with which the vibration transmission between the vacuum pump and the ground is reduced.
- those components are arranged with which the gas is compressed so far that it can be expelled against the atmosphere.
- These four sections are arranged axially one after the other with the intermediate section between the peripheral section and the control section. On the opposite side of the intermediate portion of the peripheral portion of the pump portion is provided.
- the sections of the vacuum pump are at least partially surrounded by the hood 1. It is designed in the example that it is the lower part of the vacuum pump covers. Below here refers to the direction in which the foot of the vacuum pump is mounted. While it is shaped so that the intermediate section is completely concealed, it is less high in the area of the pump section, so that it covers only the lower part. In this lower part cooling fins 8 are provided, which may also be present in the upper part.
- the hood covers at least a portion of the cooling fins, so that channels are formed, which are limited by hood, housing and cooling fins.
- the hood also hides the fan. So that this air can suck in and then convey into the channels, the hood has an opening. In the example, this is designed as a plurality of ventilation slots 7.
- the number and shape of the air vents may vary depending on the vacuum pump and the gas flow requirements of the fan.
- FIG. 2 shows in a vertical section through the vacuum pump the structure of control and intermediate section.
- the control section 2 has a closed housing which has cooling fins 11. This is cooled by free convection.
- electronic components are arranged, which form a control electronics 12 and are mounted for example on a circuit board.
- These electronic components transform a supply voltage such that voltages and currents can be applied in a suitable form to the coils of the drive in order to subsequently achieve a rotation of a drive shaft.
- the supply voltage can be a standard mains voltage such as 220 V with 50 Hz or one of the common industrial voltages such as 48 V.
- Such components of the control electronics which generate heat to a particular extent, can be arranged such that they touch the inner wall of the housing of the control section. Preferably This is realized in the area of the cooling fins 11. It is also conceivable to embed the control electronics completely or partially in a potting compound. This also increases the heat dissipation. In addition, this achieves a higher mechanical stability.
- the intermediate section 3 has several components in its housing.
- a switch 15 is used to turn on and off the vacuum pump. Other switches can be arranged there, with which, for example, a standby circuit or a speed position can be realized.
- a socket 16 to which the power supply is connected. This voltage is given on the one hand to the control electronics, on the other hand to a small power supply 17, which supplies via auxiliary electrical line connections an auxiliary electronics 18 with operating voltage. This is used to implement the switching state of the switch 15 in a control signal, which is also given via suitable electrical line connections to the control electronics.
- the auxiliary electronics also has means by which the fan motor 6a is supplied with voltage and switched on / off. Between the housing of the intermediate portion 3 and the control portion 2, a seal 14 is provided between the housing of the intermediate portion 3 and the control portion 2, a seal 14 is provided.
- this ensures a seal of the interior against moisture and dust, on the other hand, it represents a thermal barrier, so that the heat input into the control section from the direction of the intermediate section is made more difficult.
- a seal is also provided between the intermediate portion and the peripheral portion 4, so that tightness and difficult heat transfer are also provided here.
- the fan which has the fan motor and a fan blade 6b. Dashed arrows illustrate the gas flow generated by the fan: air is drawn in and conveyed between the cooling fins 8.
- the coils 26 of the drive are arranged.
- the energization of these coils is effected by the control electronics 12.
- a rotationally symmetrical separating element 23 is provided inside the coils and separates them hermetically from the interior of the separating element.
- dashed arrows illustrate the gas flow generated by the fan.
- the suction takes place through the ventilation slots 7, the gas is then conveyed in the direction of the peripheral portion.
- such ventilation slots are also arranged in the bottom of the vacuum pump. The foot of the vacuum pump then has the task of creating a distance through which air can be sucked.
- a section through the peripheral and the pumping section 5 of the vacuum pump shows Figure 4 ,
- the example shows a single-stage, lubricant-sealed rotary vane vacuum pump.
- This has a pumping system 30 in the pump section. This is connected on one end face over a large area with the peripheral section, so that there is a good heat transfer there.
- the housing of the pumping section 5 is connected in good heat-conducting manner to the peripheral section, so that the heat is transferred from the peripheral section to a body with a large surface area.
- a provided in this pumping system cylindrical bore is penetrated by the shaft 24 eccentric.
- the shaft can be made in one or more pieces. It is rotatably supported by a first sliding bearing 31 and a second sliding bearing 32.
- lubricant derived from the lubricant reservoir 35 surrounding the pumping system.
- Sliders 33 run around in the cylindrical bore, the scoop space 34 being formed between the sliders and the wall of the cylindrical bore. Gas passes through the gas inlet 9 in this pump chamber.
- permanent magnets 25 are fixed, which cooperate with the coils 26 provided in the peripheral portion, whereby the shaft is rotated. Together, permanent magnets and coils form an electric motor.
- This example is a brushless DC motor.
- the pump section is in Figure 5 shown in section along AA '. It is clarified in this illustration, the eccentric position of the shaft 24 and the position of the slide 33. Between these springs not shown are provided.
- the housing of the pump section has cooling ribs 8.
- the hood 1 covers the cooling fins, whereby flow channels 42 arise. Through these flow channels, which can be interconnected, the gas supplied by the fan flows, absorbs heat from the housing and transports them in the sequence away from the housing. This heat is generated in the pumping system 30 and is discharged via the lubricant reservoir to the housing.
- the hood is designed so that the channels are open at their end. This is easiest to accomplish, in that the hood does not cover the pump section side end face of the vacuum pump.
- an intermediate member 40 is arranged, which has, for example, high elastomer components.
- This Intermediate component is advantageously arranged at that point between the hood and housing, are connected to the hood and housing together.
- Material selection and placement provide both a thermal barrier and a reduction in vibration transfer from the pump housing to the hood.
- the vacuum pump shown in this embodiment has a favorable heat balance.
- a first strong heat source is due to the heat of compression in the pump section 5.
- Another strong heat source is the peripheral portion, since there the coils of the drive are arranged, in which power loss is converted into heat.
- heat is introduced into the peripheral section via the end face of the pumping system 30, since at this point the pumping system and the peripheral section are in contact with each other over a large area.
- These heat sources are kept away from the control section by the intermediate section. Due to the order of the sections, the distance is maximized.
- the thermal resistances of the seals which are provided between the intermediate section and its neighboring sections. These passive measures cause a very favorable heat balance. To these is added the active cooling by the fan (s).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
- Rotary Pumps (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006058840.1A DE102006058840B4 (de) | 2006-12-13 | 2006-12-13 | Vakuumpumpe |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1936202A2 EP1936202A2 (de) | 2008-06-25 |
EP1936202A3 EP1936202A3 (de) | 2014-01-29 |
EP1936202B1 true EP1936202B1 (de) | 2018-09-12 |
Family
ID=39217910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07022565.1A Not-in-force EP1936202B1 (de) | 2006-12-13 | 2007-11-21 | Vakuumpumpe |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080145243A1 (ja) |
EP (1) | EP1936202B1 (ja) |
JP (1) | JP2008151125A (ja) |
DE (1) | DE102006058840B4 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102035838B1 (ko) * | 2013-04-19 | 2019-10-23 | 아뜰리에 부쉬 에스.아. | 베인 유형 회전 진공 펌프 |
EP4043733B1 (de) * | 2022-06-17 | 2024-03-27 | Pfeiffer Vacuum Technology AG | Vakuumpumpe mit separat ansteuerbaren lüftern |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2476041A (en) * | 1946-03-15 | 1949-07-12 | Singer Mfg Co | Air blower lubrication |
US4283167A (en) * | 1979-04-26 | 1981-08-11 | Varian Associates, Inc. | Cooling structure for an oil sealed rotary vacuum pump |
DE3112591C2 (de) * | 1981-03-30 | 1983-12-29 | Nixdorf Computer Ag, 4790 Paderborn | Schallisolierendes geschlossenes Gerätegehäuse |
US4523897A (en) * | 1982-06-11 | 1985-06-18 | Robinair Division | Two stage vacuum pump |
DE3225258C2 (de) * | 1982-07-06 | 1985-11-28 | Guido Oberdorfer Wap-Maschinen, 7919 Bellenberg | Schmutzsauger |
US4631006A (en) * | 1985-02-19 | 1986-12-23 | Robinair Division | Compact vacuum pump |
US4651380A (en) * | 1985-03-01 | 1987-03-24 | Rug Doctor, Inc. | Portable vacuum cleaning machine |
DE8902932U1 (de) * | 1989-03-10 | 1989-05-24 | Uraca Pumpenfabrik GmbH & Co KG, 7432 Bad Urach | Kolben- bzw. Plungerpumpe, insbesondere für Kanalspülfahrzeuge |
DE4017193A1 (de) * | 1990-05-29 | 1991-12-05 | Leybold Ag | Geraeuscharme vakuumpumpe |
DE4038872A1 (de) * | 1990-12-03 | 1992-06-04 | Mannesmann Ag | Luftgekuehlte rotationsmaschine |
JP2837101B2 (ja) * | 1994-11-04 | 1998-12-14 | ファナック株式会社 | 空冷式電動機 |
DE19849098A1 (de) * | 1998-10-24 | 2000-04-27 | Leybold Vakuum Gmbh | Exzenterschneckenpumpe bzw. Innenspindelpumpe |
JP2000297445A (ja) * | 1999-04-13 | 2000-10-24 | San-Ei Faucet Mfg Co Ltd | 防音機能付水栓 |
DE10156179A1 (de) * | 2001-11-15 | 2003-05-28 | Leybold Vakuum Gmbh | Kühlung einer Schraubenvakuumpumpe |
JP2003247581A (ja) * | 2002-02-27 | 2003-09-05 | Gomuno Inaki Kk | 防音カバー構造 |
US7674096B2 (en) * | 2004-09-22 | 2010-03-09 | Sundheim Gregroy S | Portable, rotary vane vacuum pump with removable oil reservoir cartridge |
US7533685B2 (en) * | 2005-01-28 | 2009-05-19 | Agilent Technologies, Inc. | Lubricant collection apparatus |
-
2006
- 2006-12-13 DE DE102006058840.1A patent/DE102006058840B4/de not_active Expired - Fee Related
-
2007
- 2007-11-21 EP EP07022565.1A patent/EP1936202B1/de not_active Not-in-force
- 2007-12-12 JP JP2007320416A patent/JP2008151125A/ja active Pending
- 2007-12-12 US US12/001,908 patent/US20080145243A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
US20080145243A1 (en) | 2008-06-19 |
JP2008151125A (ja) | 2008-07-03 |
DE102006058840B4 (de) | 2021-01-14 |
EP1936202A3 (de) | 2014-01-29 |
DE102006058840A1 (de) | 2008-06-19 |
EP1936202A2 (de) | 2008-06-25 |
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