Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
  • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
  • F01C21/007—General arrangements of parts; Frames and supporting elements
• • 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
  • 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
  • F04B39/16—Filtration; Moisture separation
• • 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
  • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
  • F04B41/06—Combinations of two or more pumps
• • 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
  • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
  • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
• • 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
  • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
  • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D19/00—Axial-flow pumps
  • F04D19/02—Multi-stage pumps
  • F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
  • F04D19/046—Combinations of two or more different types of pumps
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D29/00—Details, component parts, or accessories
  • F04D29/60—Mounting; Assembling; Disassembling
  • F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D29/00—Details, component parts, or accessories
  • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
  • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
• • 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
• • 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
  • F04C2240/806—Pipes for fluids; Fittings therefor

Definitions

• the invention relates to a vacuum pump system.
• Vacuum pump systems have in particular in the flow direction one behind the other connected vacuum pumps.
• the vacuum pumps can be arranged in a steel framework, wherein the pumps are fixed in the steel framework and connected to one another, for example, via flexible hoses.
• An arrangement of several vacuum pumps in a steel framework takes place, for example, together with control devices and the like.
• the use of steel frameworks is advantageous when, for example, particle or dust filters in the connecting lines, i. E. must be arranged in the flow channels between the vacuum pumps. This is particularly necessary in the evacuation of rooms when the medium to be delivered has a high particle content.
• the vacuum pump system has dust or particle sensitive vacuum pumps, the provision of particulate filters is required.
• Such vacuum pumps are, in particular, oil-sealed pumps, such as rotary vane pumps. Even dry-running screw pumps are sensitive to particles due to the narrow sealing gaps.
• the arrangement of at least two vacuum pumps in a framework together with filter elements connected via hoses is complicated. Also, such steel scaffolding on a large space requirement and also the filter elements are often difficult to access, so that a cleaning or replacement of the filter elements is expensive.
• the object of the invention is to provide a vacuum pump system which has at least two vacuum pumps and at least one filter element and has a simple and compact construction.
• the vacuum pump system has a first pratikelunene vacuum pump and a second, the first vacuum pump downstream in the flow direction of the vacuum pump.
• the second vacuum pump is particle-sensitive, so that a filter element is arranged between the two vacuum pumps.
• the first vacuum pump is, for example, a dry-running Roots pump, which is insensitive at least to a certain particle density and size in the medium to be conveyed.
• a second vacuum pump which is, however, sensitive to particles.
• This vacuum pump is, for example, an oil-sealed vacuum pump such as a rotary vane pump, a dry-density screw pump or the like.
• the two vacuum pumps of the vacuum pump system are connected to each other via a connecting element which forms a flow channel through which the medium to be conveyed is conveyed by the first vacuum pump in the direction of the second vacuum pump.
• the filter element is arranged in the flow channel.
• the vacuum pump system may also have more than two vacuum pumps.
• the connecting element which is arranged between the two vacuum pumps, is designed in such a way that, on the one hand, it carries the first or second vacuum pump, so that it is not necessary to provide a steel framework or another mounting.
• the connecting element according to the invention is designed such that it is connected to at least one filter element.
• the connecting element has inventive
• the filter element is preferably integrated into the connecting element. Due to an inventive provision of such a rigid connecting element with an integrated filter element, a steel framework can be omitted.
• the connecting element on a first approach which is rigidly connected to the outlet of the first vacuum pump.
• the approach of the connecting element is formed in a flange, so that it can be rigidly connected to the flange-like outlet of the first vacuum pump optionally providing an intermediate element, in particular by a screw connection.
• the connecting element has a second rigid connectable with the second vacuum pump approach.
• This preferably also flange-shaped approach is in particular connected to the inlet of the second vacuum pump, in turn, a particular rigid tubular intermediate member may be provided.
• the connecting element is thus connected via a flange also with the provision of rigid intermediate elements on the one hand to the outlet of the first vacuum pump and on the other hand to the inlet of the second vacuum pump, in particular by screwing.
• two filter elements are connected to the connecting element, so that the filter element has a coarse filter and a fine filter or two different filter types. It is preferred that in the flow direction, the medium to be conveyed first flows through the coarse filter and then through the fine filter. It is preferred in that at least one of the two filters is arranged laterally on the connecting element.
• the connection of the filter elements may in this case also preferably via flange-like elements but also by screw connections.
• the connecting element has a curved inlet channel connected to the outlet of the first vacuum pump and the filter element, in particular the coarse filter. This makes it possible to introduce the weight of the first vacuum pump and the forces and moments occurring during operation well into the connecting element and then support it via the connecting element in the second vacuum pump. It is therefore further preferred that the connecting element between the coarse filter and the fine filter in an assembled state in particular has a substantially horizontally extending connecting channel. In this case, it is preferred that the connecting channel is connected to an annular channel surrounding the coarse filter, so that the medium in the coarse filter flows inward from the outer annular cylindrical area through the filter element.
• the connecting element has a curved outlet channel. This extends in particular from the outlet of the at least one filter element, in particular of the fine filter, to the inlet of the second vacuum pump.
• the preferably inner outlet channel of the fine filter, which is connected to the inlet of the second vacuum pump, of the annular channel which connects the connecting channel connected to the outlet of the fine filter with the outer region of the coarse filter This annular channel is surrounded in particular in the transition region.
• the walls of the individual channels form the rigid connecting element, so that in this way the entire weight of the first vacuum pump as well as the occurring forces and moments can be absorbed and transmitted during operation.
• this has no supporting function.
• FIG. 1 is a schematic representation of an embodiment of a vacuum pump system
• Fig. 2 is a schematic longitudinal section of the connecting element
• Fig. 3 is a schematic perspective view shown horizontal section of the connecting element.
• the vacuum pump system has a first, in particular particle-insensitive, vacuum pump 10, such as a root pump. Furthermore, the vacuum pump system has a second, in particular particle-sensitive vacuum pump 12, which is, for example, an oil-sealed rotary vane pump, a dry-running screw pump and the like. is. Between the two vacuum pumps, a connecting element 14 is arranged. The connecting element 14 is connected to the second vacuum pump via a tubular intermediate element 16 and in the illustrated embodiment directly connected to an outlet of the first vacuum pump 10, so that the connecting element 14 carries the first vacuum pump 10. The connecting element forms flow channels (see FIGS. 2 and 3). These direct the medium to be conveyed through a filter element, wherein in the illustrated embodiment with the connecting element 14, a coarse filter 18 and a fine filter 20 or two different filter types is connected.
• the connecting element 14 designed according to the invention has a first flange-like projection 22 (FIG. 2) which, for example, is connected directly to an outlet 24 of the first vacuum pump 10 via screw connections. If appropriate, this can also take place via a particularly rigid, tubular intermediate element. Due to the provision of such flange connections a rigid connection between the flange 22 and the first vacuum pump 10 is realized.
• the connecting element has a second flange-shaped projection 26, which is connected either directly or, as in the illustrated embodiment, via a raw intermediate element 16 indirectly to an inlet 28 of the second vacuum pump 12.
• the connection is preferably carried out by screws.
• the connecting element has rigid wall elements, in particular the central, internal, rigid wall element 30.
• the flow channels forming wall elements 32, 34 can be carried out a transmission of the weight of the first vacuum pump 10 and also occurring during operation forces and moments.
• the connecting element 14 has a curved inlet channel 36 which is connected to the outlet 24 of the first vacuum pump and to the filter element, which in the example shown is the coarse filter 18 is.
• Medium to be delivered is thus pumped by the first vacuum pump 10 through its outlet 24 into the curved inlet channel 36 and from there into an outer region 38 of the coarse filter. From the outer annular cylindrical portion 38 of the coarse filter, the medium is conveyed radially inwardly into an inner cylindrical portion 40 of the coarse filter, wherein the medium in this case flows through the filter material 42 for coarse filtering.
• the medium flows into a connecting channel 44.
• the connecting channel 44 expands in the flow direction in the illustrated embodiment to an annular channel 46, which is then connected to an annular cylindrical portion 48 of the fine filter 20.
• the medium flows from the outer annular cylindrical portion 48 radially inwardly through the filter material 50 in the cylindrical portion 52.
• the cylindrical inner region 52 of the fine filter 20 is connected to the inlet 18 of the second vacuum pump 12 via a curved outlet channel 54 and, in the illustrated exemplary embodiment, via the tubular intermediate element 16.
• the curved outlet channel is in this case arranged such that it is surrounded by the annular channel 46 (FIG. 2) in the transition region, so that a compact design is realized.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
• Compressor (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=50513901

Family Applications (1)

Country Status (5)

Citations (4)

Family Cites Families (12)

• 2013
  • 2013-04-24 DE DE202013003819.5U patent/DE202013003819U1/de not_active Expired - Lifetime
• 2014
  • 2014-04-10 WO PCT/EP2014/057292 patent/WO2014173692A1/de active Application Filing
  • 2014-04-10 EP EP14718365.1A patent/EP2989295B1/de active Active
  • 2014-04-10 CN CN201480023355.0A patent/CN105164375B/zh active Active
  • 2014-04-21 TW TW103114377A patent/TWI615550B/zh active

Patent Citations (4)

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