EP1131558B1 - Verfahren zum fördern feuchter gase mittels einer fördereinrichtung sowie fördereinrichtung zum durchführen dieses verfahrens - Google Patents
Verfahren zum fördern feuchter gase mittels einer fördereinrichtung sowie fördereinrichtung zum durchführen dieses verfahrens Download PDFInfo
- Publication number
- EP1131558B1 EP1131558B1 EP99953937A EP99953937A EP1131558B1 EP 1131558 B1 EP1131558 B1 EP 1131558B1 EP 99953937 A EP99953937 A EP 99953937A EP 99953937 A EP99953937 A EP 99953937A EP 1131558 B1 EP1131558 B1 EP 1131558B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conveyor
- pump
- feed
- feed pump
- valve
- 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
Links
- 239000007789 gas Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000009423 ventilation Methods 0.000 claims abstract description 51
- 238000001816 cooling Methods 0.000 claims description 18
- 238000009833 condensation Methods 0.000 claims description 15
- 230000005494 condensation Effects 0.000 claims description 15
- 239000004033 plastic Substances 0.000 claims description 10
- 229920003023 plastic Polymers 0.000 claims description 10
- 238000005086 pumping Methods 0.000 claims description 9
- 238000009835 boiling Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000006223 plastic coating Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 2
- 238000009834 vaporization Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 20
- 230000001954 sterilising effect Effects 0.000 description 15
- 238000004659 sterilization and disinfection Methods 0.000 description 15
- 238000001035 drying Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000001704 evaporation Methods 0.000 description 8
- 230000008020 evaporation Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002470 thermal conductor Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/062—Cooling by injecting a liquid in the gas to be compressed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/18—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids
- F04B37/20—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids for wet gases, e.g. wet air
Definitions
- the invention relates to a method for conveying moist gases by means of a delivery device, the at least one delivery pump with a displacer oscillating in a delivery chamber.
- the invention also relates to a conveyor, in particular to carry out the method mentioned at the beginning, with at least one feed pump, one in a feed chamber has oscillating displacers and their delivery space a Inlet with at least one suction valve and an outlet with has at least one exhaust valve, at least one Feed pump of the conveyor with a ventilation device has a ventilation duct that opens into the area of the delivery chamber and wherein a ventilation valve is interposed in the ventilation duct is, if necessary and independent of the Stroke position of the displacer can be actuated.
- a conveyor device is already known from DE 296 18 911 U1 of the type mentioned with a diaphragm pump, which Conveyor especially for the evacuation of the Completion of dentures or dental prostheses needed Kilns serves.
- the known conveyor has a ventilation valve for the pump work space of the diaphragm pump. This vent valve is in the flow direction behind the inlet valve connected to the pump workspace so that the suction pipe the diaphragm pump are kept clear of the ventilation valve and the ventilation valve has no influence on the passage cross-section for the pumped medium.
- the ventilation valve in the previously known from DE 296 18 911 U1 Conveyor is solely intended to be inexpensive Way also a trouble-free start of the pump arrangement existing vacuum in the intake line and at the same time to ensure high pump performance at low cost.
- the conveyor device known from DE 296 18 911 U1 however neither suitable nor intended to convey moist gases, such as during the operation of an autoclave attack.
- the sterilization chamber is more well known for evacuating Steam sterilization devices on a conveyor connected, which has a vacuum pump. Because of the So far, the vacuum pump has been exposed to water vapor only water ring pumps or diaphragm pumps are used. Because of the Size and the disadvantages of a water ring pump come in the for example, smaller ones intended for the doctor's office Steam sterilization devices mostly only apply to membrane pumps.
- Cartridge cartridges are relatively expensive because they are additional a control device for these heating cartridges Temperature sensor for regulating the evaporation temperature must be used, and because these heating cartridges mostly need at least as much electrical power as that Drive motor of the associated feed pump.
- the inventive solution to this problem consists in the Process of the type mentioned in particular in that the Delivery space of at least one feed pump during the operation of the Conveyor as required and regardless of the stroke position of the displacer oscillating in the delivery chamber once or several times is ventilated intermittently.
- a device is already known from US-A-2 812 893 as a combination of a suction pump and a compressor is trained.
- the known device works with Downstroke of the piston as a suction pump, while on the upstroke serves as a compressor.
- the piston opens during the Downward stroke on the cylinder circumference provided valve openings, so additional air into the displacement under atmospheric pressure from outside flow in and are compressed in the subsequent upward stroke can, because the air sucked in through the inlet valve to the Compression alone may not be enough.
- the device known from US-A-2 812 893 has compression spring loaded Intake and exhaust valves at a defined Open the pressure difference temporarily. Opens the exhaust valve of the previously known device, for example, at an overpressure of 10 bar, so the compressed during the upward stroke and 10 bar Excess air is expelled through the exhaust valve. in the The upper dead space then only remains below this pressure limit is the amount of air. Because this is harmful Air volume still has a gas pressure of 10 bar, it would normally push the plunger down so that the previously known device does not function as a downward stroke Suction pump can take over.
- the previously known device shows in her pump head therefore a vent valve, which means an actuating rod arranged on the piston at top dead center is opened. The actuation of the in the known device Vent valve used is therefore cyclical and in Dependence on the stroke position of the piston.
- the delivery space is at least a feed pump, on the other hand, if necessary and independent of the stroke position of the displacer once or at time intervals ventilated several times. This will be in the funding room any remaining liquid droplets from the conveyor blown out.
- the pumping room can be ventilated during the operation of the feed pump once or several times for example after certain condensation times or at different pressure levels in one by means of the conveyor chamber to be evacuated. Since in the invention Process a quick and targeted pump drying the moisture contained in the fluid handled condensed, the delivery chamber cooled and accordingly on energy-consuming heating of the pump head can be dispensed with.
- the feed pump Because in particular in a steam sterilization device in the medium contained water vapor cooled and in its liquid state is transferred, the feed pump has only a smaller one Pump out the volume of the pumped medium, resulting in the required Pump operating time significantly reduced.
- the for Cooling of the pumped medium in the area of the pumping room required Cooling the feed pump also causes at the same time a cool run of the conveyor, which is a long Lifetime of the feed pump and long service intervals favored.
- the ventilation of the delivery chamber according to the inventive method can also be done manually.
- the solution according to the invention is to facilitate handling in the conveyor of the type mentioned in particular in that the ventilation valve with a control device in Control connection is, and that the control device Has timer and / or a pressure sensor, for a one-time or repeated intermittent actuation of the ventilation valve in Depending on the condensation time and / or depending predetermined pressure levels in a by means of the conveyor chamber to be evacuated.
- the suction valve also opens when the ventilation valve is opened abruptly closes, the ventilation or Take drying gas one way only and from the pump inlet side directly through the delivery chamber to the pump outlet side stream. This measure ensures effective pump drying favored.
- the feed pump having the ventilation device is the first Pump stage of the multi-stage conveyor forms.
- the Channel cross-section is selected so that the flow force is greater as an adhesive force and in particular that is an atmospheric Volume flow of the conveyor an average flow rate greater than 10 m / sec. generated.
- This flow rate creates a frictional force at the boundary layer between ventilation gas and adhesive liquid that is larger than the adhesive force between the liquid and that in the delivery chamber provided flow surfaces. This ensures that the liquid droplets remaining in the delivery chamber detach from the flow surfaces of the delivery chamber and with the Ventilation or drying gas are entrained.
- the drying of the pumping room is additionally supported, if the conveyor device, at least in some areas, preferably at least in the area of the pump head of the feed pump (s) Low-adhesion and especially non-metallic flow surfaces which has very low adhesive binding forces to liquids exhibit. It can be particularly advantageous if the Flow surfaces of the conveyor at least in one Part of a plastic coating, preferably one Teflon coating.
- the pump head of the Feed pump (s) is forced cooled and that at the pump head Delivery pump (s) on the outside preferably cooling fins for forced air cooling are provided. Because the pump head at this is further cooled embodiment, the Head temperature also below the given evacuation pressure Existing evaporation or boiling temperature are cooled. This further development according to the invention ensures that the water vapor contained in the medium condense and cannot evaporate again. A re-evaporation of the Condensate would have an undesirable increase in volume of the medium and a corresponding extension of the necessary operating times of the conveyor result.
- a preferred embodiment according to the invention provides that between the pump head and a crankcase Feed pump (s) an intermediate cover or an intermediate plate is arranged, in which the between the delivery room and the Valves provided flow channels are provided and that the intermediate cover is designed as a plastic part. Because due of the ventilation valve provided according to the invention Heating up the pump head can be avoided and because of that subject of the present invention a condensation in Fluid contained is preferred, the can Intermediate cover, for example as an injection molded part from one Plastic are made. Such a plastic part and in particular a plastic injection molded part has a very smooth, water-repellent surface, which creates the adhesive effect even more can also be reduced. It also trains Plastic-made intermediate cover a bad one Thermal conductor that provides effective thermal insulation between the hot Pump head and the pump housing forms.
- plastic manufactured intermediate cover compared to, for example pump head made of aluminum remains relatively cool a condensation of the moisture contained in the medium and a rapid removal of the moisture droplets in the area this intermediate cover favors.
- plastic and especially as a plastic injection molded part manufactured intermediate cover can be produced very inexpensively.
- a preferred embodiment according to the invention provides that the feed pump (s) of the conveyor, in particular the the ventilation device pointing to the feed pump, as a reciprocating piston pump or is preferably designed as a diaphragm pump.
- the conveyor device has a flow guide with at least has a tubular channel section
- an optimization the flow guidance can be achieved when this channel section at the end with an adjacent section of the flow guide by means of a sealing ring made of elastic material in the is essentially seamlessly connected.
- the diaphragm pump 2 has a thin elastic and serves as a displacer Shaped membrane 3, which is fixed between its circumference Pump head 4 and a pump housing 5 is clamped.
- the Formed diaphragm 3 of the diaphragm pump 2, which uses a connecting rod 6 is moved between them and the pump head 4 a funding room 7.
- the pump head 4 of the diaphragm pump 2 is essentially in two parts formed and has an intermediate cover 8 and a End cover 9 on.
- the suction valve 11 and that Outlet valve 13 of the feed pump 2 are dependent on the pressure prevailing in the delivery chamber 7 can be actuated.
- the valves For this purpose, 11, 13 have a valve body 14, which as one of a Elastomer existing valve disc is formed.
- This Valve disks can also be tongue-shaped or round, for example be trained.
- the diaphragm pump 2 is otherwise not part of one conveyed device 1, which is used to convey moist Serves gases.
- Such funding facilities are, for example Evacuation of steam sterilization devices (so-called Autoclaves) or in the field of gas drying.
- the pump head 4 is Feed pump 2 forced-cooled.
- the pump head 4 can do this For example, have a water cooling system, the cooling channels very close and parallel to those in the pump head Gas flow channels are arranged.
- the pump head 4 in particular its end cover 9 in addition to or instead of water cooling Cooling fins not shown here for forced air cooling having.
- the feed pump 2 With the help of this forced cooling, the feed pump 2 becomes such forced-cooled so that it is below the existing evaporation or boiling temperature in the gaseous Liquid contained in the fluid is cooled, which in the evacuation pressure to be evacuated equivalent. Due to the cooling of the moist pumped medium at the same time the volume of the originally vaporous Fluid during the condensation to a fraction of the original volume reduced. Through this volume reduction a condensation pump effect occurs in the area of the conveyor, which is the conveying capacity of the conveying device 1 supported. Since the water vapor contained in the pumped medium Area of the feed pump 2 cooled and in its liquid The delivery pump has only one physical state pump out less volume of the pumped medium, resulting in the required pump operating time is significantly reduced. The for Cooling of the pumped medium in the area of the pumping room 7 necessary cooling of the feed pump 2 also causes a cool run of the conveyor 1, which is a long Lifetime of the feed pump and long service intervals favored.
- the delivery chamber 7 during the Operation of the feed pump 2 vented intermittently at time intervals.
- the time intervals can depend on those in the to be evacuated (steam sterilization) chamber Pressure levels and / or the condensation times can be controlled.
- the diaphragm pump 2 has a ventilation device 15 a ventilation duct 16 which opens into the area of the delivery chamber.
- a ventilation valve 17 is interposed in the ventilation channel 16, which is in control connection with a control device stands.
- the Control device can also be used one, for example, in the steam sterilization chamber Autoclave pressure sensor connected if that Ventilation valve 17 in dependence on predetermined pressure levels of the chamber to be evacuated.
- the ventilation of the delivery chamber 7 can staggered several times during the operation of the feed pump 2 for example after certain condensation times or Pressure levels take place. Since by means of the ventilation device 15 quick and targeted pump drying can be achieved, the moisture contained in the fluid can condense, the pumping room cooled and accordingly on an energy-consuming Heating up the pump head 4 can be dispensed with.
- the delivery chamber 7 with the suction valve 11 is over a suction channel 18 connected.
- the ventilation duct 16 opens the ventilation device 15 in the flow direction of the pump inlet 10 immediately behind the suction valve 11 in the suction channel 18th
- the suction valve 11 closes Diaphragm pump 2 suddenly.
- the actuation of the ventilation device 15 causes that in the Feed pump 2 a targeted flow with a very high Flow rate is built up, which is the in the pumping chamber 7 entrained liquid droplets.
- the one in the gaseous Liquid contained in the pumped medium is after its condensation in the pump head 4 by clocking the ventilation device one or more times 15 specifically promoted from the feed pump 2.
- the Conveyor 1 for example for evacuating the steam sterilization chamber an autoclave or a vacuum drying cabinet used, the evacuation time with the help of Ventilation device 15 significantly shortened and the final vacuum be improved.
- the ventilation valve 17, which is also a manually operated valve can be formed here is an electromagnetic valve trained and integrated directly into the intermediate cover 8.
- This Intermediate cover 8 is designed as a plastic injection molded part, which is characterized by a very smooth, liquid-repellent surface distinguished.
- the plastic intermediate cover is inexpensive 8 forms a very poor heat conductor, it can be effective Thermal insulation between pump housing 5 and end cover 9 Act.
- the moisture contained in the gaseous medium can in the cooler compared to the cooled cover 9 Condense intermediate cover 8 well.
- the end cover 9 is therefore a die-cast part preferably made of aluminum.
- this die-cast aluminum part are those provided for the medium Gas flow channels formed without blind holes. This makes bags and largely avoided other dead spaces that would otherwise occur during subsequent drilling of such channels arise and in which the liquid can accumulate.
- the pump head 4 is also non-metallic in the area of its end cover 9 Flow surfaces. These flow surfaces are designed in the area of die-cast aluminum End cover 9 by a plastic coating, in particular a Teflon coating.
- the feed pump shown in Figure 1 can 2 can also be part of a multi-stage conveyor device 100.
- the conveyor device 100 is the ventilation device 15 having diaphragm pump 2 provided as the first pump stage, the Pump outlet 12 via a tubular channel section 19 with the pump inlet 10 of the diaphragm pump 2 'is connected.
- This Channel section 19 is with its ends in connection openings 20 of the pumps 2, 2 'held, these ends of the Channel section 19 each with the adjacent portion of the Flow guidance by means of a sealing ring 21 joint and is seamlessly connected.
- the channel cross section of the Flow channel chosen so small that an atmospheric Volume flow of the equipped with the ventilation device 15 Feed pump 2 has an average flow rate greater than 10 m / Sec. generated.
- the Pump heads 4 of the feed pumps 2, 2 ' cooled in such a way that the Condensate moisture contained in the gaseous medium can.
- the condensation is carried out, for example, as air and / or Water cooling trained forced cooling of the pump heads 4 reached.
- Through flow-optimized and coated flow guides the condensate in the conveyors 1, 100 transported without liability.
- a condensation occurs drastic volume reduction, resulting in fast pumping times and achieve high pumping capacities.
- ventilation device 15 can fast and targeted drying of the conveyor systems 1, 100 can be achieved, thereby shortening the evacuation time additionally favored and the achievable final vacuum can be significantly reduced.
- Ventilation device 15 Since the ventilation duct 16 of Ventilation device 15 opens into the delivery chamber 7 of the delivery pump 2, can do this depending on the prevailing in the production area Pressure working suction valve 11 also serves as a check valve act, whereby a targeted drying of the Conveyors 1, 100 is reached.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Drying Of Solid Materials (AREA)
- Compressor (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
- Fig. 1
- eine als Membranpumpe ausgebildete Förderpumpe mit einer Belüftungseinrichtung, deren Belüftungskanal im Bereich des Förderraums der Pumpe mündet, und
- Fig. 2
- eine zweistufige Fördereinrichtung, die zwei Förderpumpen hat, von denen die erste Pumpstufe eine Belüftungseinrichtung aufweist.
Claims (15)
- Verfahren zum Fördern feuchter Gase mittels einer Fördereinrichtung (1, 100), die zumindest eine Förderpumpe (2, 2') mit einem in einem Förderraum (7) oszillierenden Verdränger (3) aufweist, dadurch gekennzeichnet, daß der Förderraum (7) wenigstens einer Förderpumpe (2) während des Betriebs der Fördereinrichtung (1, 100) bedarfsweise und unabhängig von der Hubstellung des Verdrängers einmal oder in Zeitintervallen mehrmals stoßweise belüftet wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Förderpumpe(n) (2, 2') im Bereich ihres Pumpenkopfes (4) zwangsgekühlt wird (werden).
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Förderpumpe(n) (2, 2') im Bereich ihres Pumpenkopfes (4) unter die bei gegebenem Evakuierungsdruck vorhandene Verdampfungs- oder Siedetemperatur abgekühlt wird (werden).
- Fördereinrichtung (1, 100), insbesondere zur Durchführung des Verfahrens nach eines der Ansprüche 1 bis 3, mit zumindest einer Förderpumpe (2, 2'), die einen in einem Förderraum (7) oszillierenden Verdränger (3) aufweist und deren Förderraum (7) einen Einlaß (10) mit zumindest einem Saugventil (11) und einen Auslaß (12) mit wenigstens einem Auslaßventil (13) hat, wobei mindestens eine Förderpumpe der Fördereinrichtung eine Belüftungseinrichtung (15) mit einem Belüftungskanal (16) hat, der im Bereich des Förderraums (7) mündet, und wobei in dem Belüftungskanal (16) ein Belüftungsventil (17) zwischengeschaltet ist, das bedarfsweise und unabhängig von der Hubstellung des Verdrängers betätigbar ist, dadurch gekennzeichnet, daß das Belüftungsventil (17) der zum Fördern feuchter Gase bestimmten Fördereinrichtung mit einer Steuereinrichtung in Steuerverbindung steht, und daß die Steuereinrichtung ein Zeitglied und/oder einen Drucksensor hat, zum einmaligen oder mehrmaligen stoßweisen Betätigen des Belüftungsventils in Abhängigkeit von der Kondensationszeit und/oder in Abhängigkeit vorgegebener Druckstufen in einer mittels der Fördereinrichtung (1, 100) zu evakuierenden Kammer.
- Fördereinrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Förderraum (7) mit dem Saugventil (11) über einen Saugkanal (18) verbunden ist und daß der Belüftungskanal (16) in den Saugkanal vorzugsweise unmittelbar im Bereich des Saugventils (11) mündet.
- Fördereinrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die Saug- und/oder Auslaßventile (11, 13)' zumindest der die Belüftungseinrichtung (15) aufweisenden Förderpumpe (2) in Abhängigkeit von dem im Förderraum (7) vorherrschenden Druck betätigbar sind.
- Fördereinrichtung nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß die die Belüftungseinrichtung (15) aufweisende Förderpumpe (2) die erste Pumpstufe einer mehrstufigen Fördereinrichtung (100) bildet.
- Fördereinrichtung nach einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, daß die Fördereinrichtung (1, 100) Strömungskanäle hat, deren Kanalquerschnitt so gewählt ist, daß ein atmosphärischer Volumenstrom der Fördereinrichtung (2) eine mittlere Strömungsgeschwindigkeit größer 10 m/Sec. erzeugt.
- Fördereinrichtung nach einem der Ansprüche 4 bis 8, dadurch gekennzeichnet, daß die Fördereinrichtung (1, 100) zumindest bereichsweise, vorzugsweise mindestens im Bereich des Pumpenkopfes (4) der Förderpumpe (n) (2,2') nicht-metallische Strömungsoberflächen hat.
- Fördereinrichtung nach einem der Ansprüche 4 bis 9, dadurch gekennzeichnet, daß die Strömungsoberflächen der Fördereinrichtung (1, 100) zumindest in einem Teilabschnitt eine Kunststoffbeschichtung, vorzugsweise eine Teflonbeschichtung, aufweisen.
- Fördereinrichtung nach einem der Ansprüche 4 bis 10, dadurch gekennzeichnet, daß der Pumpenkopf (4) der Förderpumpe(n) (2, 2') zumindest im Bereich eines Abschlußdeckels (9) als Druckgußteil vorzugsweise mit eingeformten sacklochfreien Strömungskanälen ausgebildet ist.
- Fördereinrichtung nach einem der Ansprüche 4 bis 11, dadurch gekennzeichnet, daß der Pumpenkopf (4) der Förderpumpe(n) (2, 2') zwangsgekühlt ist, und daß am Pumpenkopf (4) der Förderpumpe(n) (2, 2') außenseitig vorzugsweise Kühlrippen für eine Luft-Zwangskühlung vorgesehen sind.
- Fördereinrichtung nach einem der Ansprüche 4 bis 12, dadurch gekennzeichnet, daß zwischen dem Pumpenkopf (4) und einem Kurbelgehäuse (5) der Förderpumpe(n) (2, 2') ein Zwischendeckel (8) angeordnet ist, in welchem die zwischen dem Förderraum (7) und den Ventilen (11, 13) vorgesehenen Strömungskanäle angeordnet sind, und daß der Zwischendeckel (8) vorzugsweise als Kunststoffteil ausgebildet ist.
- Fördereinrichtung nach einem der Ansprüche 4 bis 13, dadurch gekennzeichnet, daß die Förderpumpe(n) (2, 2') der Fördereinrichtung (1, 100), insbesondere die die Belüftungseinrichtung (15) aufweisende Förderpumpe (2), als Hubkolbenpumpe oder vorzugsweise als Membranpumpe ausgebildet ist.
- Fördereinrichtung nach einem der Ansprüche 4 bis 14, dadurch gekennzeichnet, daß die Fördereinrichtung (100) eine Strömungsführung mit zumindest einem rohrförmigen Kanalabschnitt (19) aufweist und daß dieser Kanalabschnitt (19) stirnendseitig mit einem benachbarten Teilbereich der Strömungsführung mittels eines Dichtringes (21) aus elastischem Material im wesentlichen fugenlos verbunden ist.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19851680A DE19851680C2 (de) | 1998-11-10 | 1998-11-10 | Verfahren zum Fördern feuchter Gase mittels einer Fördereinrichtung sowie Fördereinrichtung zum Durchführen dieses Verfahrens |
| DE19851680 | 1998-11-10 | ||
| PCT/EP1999/008082 WO2000028212A1 (de) | 1998-11-10 | 1999-10-26 | Verfahren zum fördern feuchter gase mittels einer fördereinrichtung sowie fördereinrichtung zum durchführen dieses verfahrens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1131558A1 EP1131558A1 (de) | 2001-09-12 |
| EP1131558B1 true EP1131558B1 (de) | 2002-08-07 |
Family
ID=7887227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99953937A Expired - Lifetime EP1131558B1 (de) | 1998-11-10 | 1999-10-26 | Verfahren zum fördern feuchter gase mittels einer fördereinrichtung sowie fördereinrichtung zum durchführen dieses verfahrens |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6595758B1 (de) |
| EP (1) | EP1131558B1 (de) |
| JP (1) | JP2002529656A (de) |
| KR (1) | KR100613473B1 (de) |
| AT (1) | ATE221961T1 (de) |
| DE (2) | DE19851680C2 (de) |
| TW (1) | TW482870B (de) |
| WO (1) | WO2000028212A1 (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10021454C2 (de) | 2000-05-03 | 2002-03-14 | Knf Neuberger Gmbh | Vorrichtung zum Fördern feuchter Gase |
| DE10158723B4 (de) * | 2001-11-30 | 2004-09-02 | Ilmvac Gmbh | Vakuumpumpe mit Membranschutz |
| DE10255792C5 (de) * | 2002-11-28 | 2008-12-18 | Vacuubrand Gmbh + Co Kg | Verfahren zur Steuerung einer Vakuumpumpe sowie Vakuumpumpensystem |
| US20080063551A1 (en) * | 2006-09-13 | 2008-03-13 | R. Conrader Company | Head Discharging Compressor System |
| DE202009013127U1 (de) | 2009-09-29 | 2011-02-17 | Knf Neuberger Gmbh | Mehrstufige Membran-Saugpumpe |
| DE102009043644B4 (de) * | 2009-09-29 | 2011-07-07 | KNF Neuberger GmbH, 79112 | Mehrstufige Membran-Saugpumpe |
| DE102013213257B4 (de) * | 2013-07-05 | 2024-09-19 | Pfeiffer Vacuum Gmbh | Membranvakuumpumpe mit Gasballastventil und Pumpenanordnung |
| DK201570293A1 (en) | 2015-05-19 | 2016-12-12 | Nel Hydrogen As | Diaphragm compressor with an oblong shaped chamber |
| US10385836B2 (en) * | 2015-07-14 | 2019-08-20 | Panasonic Intellectual Property Management Co., Ltd. | Reciprocating compressor and hydrogen supply system |
| CN105114283B (zh) * | 2015-07-21 | 2018-05-01 | 石家庄佳信汽车制动系统有限公司 | 直线对置活塞式电动真空泵 |
| US11873802B2 (en) | 2020-05-18 | 2024-01-16 | Graco Minnesota Inc. | Pump having multi-stage gas compression |
| CN112185750A (zh) * | 2020-10-20 | 2021-01-05 | 国网甘肃省电力公司兰州供电公司 | 一种高压断路器sf6气体输送装置 |
| CN112268082B (zh) * | 2020-11-13 | 2022-05-17 | 山东交通学院 | 一种活塞往复式液力缓速器 |
| JP2023163366A (ja) * | 2022-04-28 | 2023-11-10 | マブチモーターオーケン株式会社 | ダイヤフラムポンプ |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2812893A (en) * | 1954-06-28 | 1957-11-12 | Westinghouse Air Brake Co | Combined air exhauster and compressor |
| JPS5815777A (ja) * | 1981-07-21 | 1983-01-29 | Toshiba Corp | 往復動式圧縮機のインジエクシヨン装置 |
| US5174735A (en) * | 1991-04-16 | 1992-12-29 | Tecumseh Products Company | Low reexpansion valve system |
| US5692387A (en) * | 1995-04-28 | 1997-12-02 | Altech Controls Corporation | Liquid cooling of discharge gas |
| AU6031196A (en) * | 1995-06-07 | 1996-12-30 | Altech Controls Corporation | Liquid compressor cooling |
| DE29514009U1 (de) * | 1995-08-31 | 1995-11-09 | Hyco-Vakuumtechnik GmbH, 81247 München | Vakuumpumpe |
| DE29618911U1 (de) * | 1996-10-30 | 1996-12-19 | Dekema Dental-Keramiköfen GmbH, 83395 Freilassing | Pumpenanordnung |
-
1998
- 1998-11-10 DE DE19851680A patent/DE19851680C2/de not_active Expired - Lifetime
-
1999
- 1999-10-26 DE DE59902298T patent/DE59902298D1/de not_active Expired - Lifetime
- 1999-10-26 JP JP2000581364A patent/JP2002529656A/ja active Pending
- 1999-10-26 AT AT99953937T patent/ATE221961T1/de not_active IP Right Cessation
- 1999-10-26 KR KR1020017004894A patent/KR100613473B1/ko not_active Expired - Lifetime
- 1999-10-26 EP EP99953937A patent/EP1131558B1/de not_active Expired - Lifetime
- 1999-10-26 WO PCT/EP1999/008082 patent/WO2000028212A1/de not_active Ceased
- 1999-11-03 TW TW088119104A patent/TW482870B/zh active
- 1999-11-26 US US09/831,443 patent/US6595758B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ATE221961T1 (de) | 2002-08-15 |
| DE19851680C2 (de) | 2003-04-10 |
| JP2002529656A (ja) | 2002-09-10 |
| EP1131558A1 (de) | 2001-09-12 |
| DE59902298D1 (de) | 2002-09-12 |
| TW482870B (en) | 2002-04-11 |
| WO2000028212A1 (de) | 2000-05-18 |
| DE19851680A1 (de) | 2000-05-18 |
| KR20010080240A (ko) | 2001-08-22 |
| KR100613473B1 (ko) | 2006-08-18 |
| US6595758B1 (en) | 2003-07-22 |
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