Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
  • F15B1/02—Installations or systems with accumulators
  • F15B1/04—Accumulators
  • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
  • F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
  • F15B1/12—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means attached at their periphery
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
  • F15B1/02—Installations or systems with accumulators
  • F15B1/04—Accumulators
  • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2201/00—Accumulators
  • F15B2201/20—Accumulator cushioning means
  • F15B2201/205—Accumulator cushioning means using gas
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2201/00—Accumulators
  • F15B2201/30—Accumulator separating means
  • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2201/00—Accumulators
  • F15B2201/30—Accumulator separating means
  • F15B2201/315—Accumulator separating means having flexible separating means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2201/00—Accumulators
  • F15B2201/40—Constructional details of accumulators not otherwise provided for
  • F15B2201/405—Housings
  • F15B2201/4053—Housings characterised by the material
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2201/00—Accumulators
  • F15B2201/40—Constructional details of accumulators not otherwise provided for
  • F15B2201/405—Housings
  • F15B2201/4056—Housings characterised by the attachment of housing components

Definitions

• the invention relates to a hydropneumatic accumulator with a storage housing whose interior consists of a displaceable piston or a flexible membrane in a liquid space filled with a liquid and a filled with a gas under pressure gas space.
• pressure prevails both in the liquid space and in the gas space.
• the object of the invention is therefore to provide a hydropneumatic accumulator of the type mentioned, which avoids such Schallabstrahlungen or at least substantially reduced.
• the outer wall of the storage housing is completely or partially enveloped by a layer-sound-absorbing and / or air-sound insulating layer or a structure-sound damping and / or airborne sound insulating layer system or a structure-sound attenuating and / or airborne sound insulating layer and / or a structure-sound damping and / or or airborne sound insulating layer system contains.
• the airborne sound emitted by the hydropneumatic accumulator is retained by the airborne sound insulating layers and attenuated by the structure-borne noise-damping layers, so that the radiated sound power is reduced.
• the structure-borne sound-absorbing layer can be positively or materially or non-positively connected to the outer wall of the storage housing.
• the airborne sound insulating layer may be applied by means of a soft elastic layer on the outer wall of the storage enclosure, wherein in dual function, the soft elastic layer may be the structure-borne sound-absorbing layer.
• the airborne sound insulating layer may surround the storage enclosure at a distance and be self-supporting.
• the decoupling layer may be a soft elastic decoupling layer, the material fit with the airborne sound insulating layer and / or Outside wall of the storage enclosure is connected.
• the decoupling layer is a soft-elastic decoupling layer, which is materially connected to the airborne sound insulating layer and form-fitting with the outer wall of the storage enclosure or that the decoupling layer is a soft-elastic decoupling, the cohesively with the airborne sound insulating layer and frictionally engaged with the outer wall of the Storage housing is connected or that the decoupling layer is a soft-elastic decoupling layer, the form-fitting envelopes the outer wall of the storage enclosure and is enveloped form-fitting manner by the airborne sound insulating layer.
• connection between the soft-elastic decoupling layer and the airborne sound insulating layer on the other hand, all combinations of material connection, positive connection, frictional connection and frictional connection are possible with regard to the connection between the soft elastic decoupling layer and the accumulator housing, ie materially bonded / materially bonded, integral / positive , positive / cohesive, cohesive / frictionally engaged, frictional / cohesive, positive / frictional and so on. Preferred combinations are given above and in the claims.
• the outer wall of the storage housing consists of several layers, of which a middle layer is a structure-sound damping and / or airborne sound insulating layer and / or layer system, so the outer layer simultaneously forms a protection against mechanical see loading such as against stone chipping in vehicles and against environmental influences.
• the structure-borne sound-absorbing layer or the structure-borne sound damping layer system may comprise a bitumen cardboard layer or a plastic heavy-duty foil or a butyl damping compound layer or a polyurethane layer or a bituminous heavy foil.
• the air-sound insulating layer or the airborne sound insulating layer system advantageously has a polyurethane flexible foam layer and / or a plastic heavy foil.
• FIG. 1 shows a first embodiment of a hydropneumatic accumulator in
• Figure 2 shows a second embodiment of a hydropneumatic accumulator in
• Figure 3 shows a third embodiment of a hydropneumatic accumulator in
• the hydropneumatic accumulators shown in the figures have a storage housing 1, 1 ', 1 ", which has a tubular storage body 2 and a first closure part 3 and a second closure part 4, wherein the storage body 2 its one end of the first closure part 3 and at its other end of the second closure part 4 is closed.
• the closure parts 3 and 4 have pipe end pieces 5 and 6 whose inner wall has a step 7 and 8 with an inner diameter which corresponds to the outer diameter of the storage body 2 and into which one end of the storage body 2 is firmly inserted. The closure parts 3 and 4 thus partially overlap the tubular storage body 2.
• a gas connection 9 is arranged on the closure part 4, and a hydraulic connection 10 is arranged coaxially to the storage housing 1, 1 ', 1" on the closure part 3.
• a pot-like piston 1 1 is slidably disposed with its radially circumferential surface on the inner wall of the storage body 2 in tight contact and the interior of the storage enclosure 1, 1 ', 1 "in a liquid filled with a liquid space 12 and one filled with a pressurized gas
• the pot opening 14 of the piston 1 1 is directed to the gas space 13.
• the storage body 2 is enclosed in the region between the pipe end pieces 5 and 6 by a structure-sound damping layer 15, which is thereby connected in a form-fitting manner to the outer wall 16 of the storage housing 1 in the region of the storage body 2.
• the positive connection exists in the axial direction of the storage housing in that layer 15 abuts against the closure parts 3 and 4 and perpendicular to the axial direction in that the layer surrounds the storage housing.
• the storage body 2 is enclosed in the region between the tube end pieces 5 and 6 by a soft-elastic decoupling layer 17 which forms a spacer layer for an air-sound insulating layer 18 which encloses the soft-elastic decoupling layer 17.
• a soft-elastic decoupling layer 17 which forms a spacer layer for an air-sound insulating layer 18 which encloses the soft-elastic decoupling layer 17.
• the storage body is enclosed in the region between the pipe end pieces 5 and 6 by a structure-borne sound-absorbing layer 15, which is enclosed by a soft-elastic decoupling layer 17 forming a spacer layer.
• the soft-elastic decoupling layer is in turn enclosed by an air-sound insulating layer 18.
• the structure-borne sound damping layers 15 may be plastic damping films and the airborne sound insulating layers 18 heavy foils.
• the sound-absorbing layers may be located in the region of the storage body 2 and in the region of the closure parts 3 and 4 on the outer wall of the storage housing.
• the invention can also be used in particular in so-called hybrid vehicles, for example in a passenger car, with an internal combustion engine and a hydraulic drive train including a hydraulic pump, a hydropneumatic accumulator and at least one hydraulic motor between the internal combustion engine and an axle.

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Fluid-Damping Devices (AREA)
• Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
• Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=50345988

Family Applications (1)

Country Status (4)

Families Citing this family (2)

Family Cites Families (8)

• 2013
  • 2013-03-26 DE DE102013205264.2A patent/DE102013205264A1/de not_active Withdrawn
• 2014
  • 2014-03-05 EP EP14711934.1A patent/EP2978978A1/de not_active Withdrawn
  • 2014-03-05 WO PCT/EP2014/054247 patent/WO2014154455A1/de active Application Filing
  • 2014-03-05 CN CN201480018128.9A patent/CN105051377B/zh not_active Expired - Fee Related

Non-Patent Citations (2)

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