EP1528261A1 - Dispositif d'accumulateur pour un système hydraulique et pompe électrique avec un tel dispositif - Google Patents

Dispositif d'accumulateur pour un système hydraulique et pompe électrique avec un tel dispositif Download PDF

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Publication number
EP1528261A1
EP1528261A1 EP04102387A EP04102387A EP1528261A1 EP 1528261 A1 EP1528261 A1 EP 1528261A1 EP 04102387 A EP04102387 A EP 04102387A EP 04102387 A EP04102387 A EP 04102387A EP 1528261 A1 EP1528261 A1 EP 1528261A1
Authority
EP
European Patent Office
Prior art keywords
membrane
support element
fold
moving support
pressure
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.)
Withdrawn
Application number
EP04102387A
Other languages
German (de)
English (en)
Inventor
Fernando Banus Garcia
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1528261A1 publication Critical patent/EP1528261A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
    • F24D3/1016—Tanks having a bladder
    • 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
    • F15B1/16—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means in the form of a tube
    • 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
    • F15B1/24—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with rigid separating means, e.g. pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
    • 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
    • F15B2201/21—Accumulator cushioning means using springs
    • 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
    • F15B2201/3151—Accumulator separating means having flexible separating means the flexible separating means being diaphragms or membranes
    • 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
    • F15B2201/3158—Guides for the flexible separating means, e.g. for a collapsed bladder
    • 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
    • F15B2201/50—Monitoring, detection and testing means for accumulators
    • F15B2201/51—Pressure detection

Definitions

  • This invention relates to an accumulator device for a hydraulic installation and to an electrically-driven pump which includes said accumulator device.
  • appliances or devices that switch a hydraulic pump on and off within certain maximum and minimum pressure limits.
  • Such appliances are provided with a hydrosphere inside which there is a moving membrane which encloses a certain volume of air under pressure, whose volume and pressure vary depending on the pressure in the hydraulic circuit, with said hydrosphere accumulating a certain volume of water in order to space apart the pump's starting and stopping sequences and in order to dampen the water-hammer effect.
  • Such appliances have the disadvantage of the hydrosphere being very voluminous and of the air pressure inside them not being easily adjustable, while over time a certain loss of pressure always occurs and calls for replacement of the air at intervals.
  • appliances for controlling the starting and stopping of a pump which include a pressure detector and a spring to push the pressure detector.
  • the pressure detector includes a practically flat membrane on whose surface the hydrostatic pressure acts and which moves in response to the output pressure of the water from the controller, being able to accumulate a certain volume of water in order to facilitate spacing apart of the pump's stopping and starting sequences.
  • That membrane is linked with a position detector that acts on an electronic circuit which in turn controls the electrically-driven pump, causing it to stop or start in accordance with the position of the membrane or, which is equivalent, depending on the pressure in the pipes upstream of the controller.
  • the controlling appliances outlined in the preceding paragraph have the disadvantage that the volume of water accumulation produced by the pressure detector's membrane is limited, due to the inherent limitation of the membrane's elasticity that does not permit significant displacements.
  • the membrane of the controlling appliances described is flat or practically flat, so that the water accumulation produced is proportional to the diameter of the membrane.
  • larger membrane diameters accumulate greater volumes of water.
  • Such larger diameters nevertheless have the disadvantage that they condition equipment design, both in terms of size and of technical characteristics.
  • pressure regulators that include an accumulator device with an interior membrane on which the hydrostatic pressure acts, and a spring that counteracts the fluid pressure.
  • membranes are attached by their ends to the wall of the regulator and by their central zone to a moving support element, forming a fluid-accumulation cavity.
  • the disadvantage of the accumulator device described is that the membrane works by using its elastic properties, so that stretching occurs at the points of said membrane by which it is attached to the wall of the regulator and that stretching gives rise to continuous wear due to the travel of the moving support element to which the membrane is attached.
  • the objective of this invention is to resolve the disadvantages mentioned by developing an accumulator device for a hydraulic installation which includes an unfurlable membrane, and an electrically-driven pump which includes said accumulator device.
  • the accumulator device of this invention is characterised in that the membrane includes a fold which forms two sections, a first section from the wall of the cylindrical body to said fold and a second section from said fold to the moving support element, with the fold zone moving as the moving support element moves.
  • the device of this invention includes a membrane which moves as the moving support element moves, without being subjected to any kind of elastic deformation. Moreover, its folded-membrane design permits membrane travel-runs very much greater than those found in the flat membranes of the state of the art. This shows itself in greater volumes of water accumulation for a given diameter of the membrane's moving support element.
  • the accumulator device of this invention has the advantage that it can be installed in any part of the hydraulic installation. It further allows sufficient volumes of water accumulation to be achieved suitably to space apart the starting and stopping sequences of the hydraulic installation's electrically-driven pump, but with small diameters of the membrane's moving support element.
  • the use of moving support elements of small diameter extends the design possibilities of the accumulator devices and makes it easier to integrate them either into electrically-driven pump controllers or inside the electrically-driven pump itself.
  • the small diameter also means a reduction of the resulting load borne by the supporting element, owing to the specific pressure acting upon a smaller surface area, which shows itself in a more compact design and a saving of materials.
  • said accumulator device includes a magnet integral to the moving support element, the magnet exciting a sensor mounted in an appliance for controlling the starting and stopping of a hydraulic pump, or mounted in an electrically-driven pump.
  • the accumulator device is integrated into an electrically-driven pump controller or into an electrically-driven pump, in such a way that the membrane is linked with a position detector that acts on the electronic circuit which sets the pump running at a certain pressure.
  • the electrically-driven pump of this invention is characterised in that it includes an accumulator device such as that described in Claim 1.
  • Figure 1 shows an accumulator device of this invention that includes a cylindrical body 1 and whose main components consist in an interior membrane 2 attached between a moving support element 3 and a guiding element 4 for said membrane 2, and a spring 5 mounted between the cylindrical body 1 and said guiding element 4.
  • the interior membrane 2 forms a cavity for accumulating a certain volume of water which depends on the pressure received by the hydraulic circuit.
  • the membrane 2 includes a fold 2a that defines two sections.
  • the fold zone 2a moves as the moving support element 3 moves under the action of the water pressure in the hydraulic circuit.
  • Said moving element 3 provides a secure anchorage for the guiding element 4 to the membrane 2, and a good base basis for preventing undesired unfurling movements of the membrane 2.
  • the element 4 serves as a guide for the membrane during its travel and prevents it expanding laterally.
  • the spring 5 is compressed under the effect of pressurisation by the water, storing the energy necessary to move the membrane 2 in the opposite direction and evacuate the accumulated volume of water to the hydraulic installation.
  • the travel-run it makes is greater than that which can be made by a flat membrane submitted to elastic deformation.
  • the device of this invention accumulates a greater volume of water than the devices known in the state of the art.
  • Figure 1 shows an accumulator device that can be installed in any part of the hydraulic installation.
  • the position of the membrane 2 of Figure 1 shows the case in which consumption points are open and the pump of the hydraulic installation is running. When these consumption points are closed the pressure of the installation rises until it reaches the maximum pressure provided by the electrically-driven pump.
  • the spring 5 of the accumulator is compressed by the effect of pressure and the membrane 2 passes into the position shown in Figure 2.
  • the electronic controller, or appliance which controls the stopping and starting of the hydraulic pump, will then proceed to stop the pump.
  • Figure 3 shows an accumulator device that forms part of an electronic controller or appliance for stopping or starting a hydraulic pump.
  • the moving support element 3 has a built-in magnet 6 and, likewise, when any valve in the installation is opened and the pressure falls the spring 5 tends to return to its original position.
  • the moving support element 3, together with the membrane 2, likewise regains its initial position, while the pressure of the installation falls steadily until it reaches a pressure at which the magnet 6 gives a magnetic signal to a reed relay or Hall effect sensor or the like attached to the controller body, which at the same time acts on the power-supply circuit of the electrically-driven pump and causes it to start.
  • Figure 4 shows an accumulator device of this invention integrated into an electrically-driven pump.
  • the moving element 3 does not include a magnet 6 and thus acts as a simple water-accumulation device.
  • the accumulator device integrated into the electrically-driven pump to include a magnet 6 located on the moving support element 3, while said magnet 6 can likewise adopt the function of starting up the pump at a particular pressure by acting on a reed relay or Hall effect sensor or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating Pumps (AREA)
EP04102387A 2003-06-06 2004-05-28 Dispositif d'accumulateur pour un système hydraulique et pompe électrique avec un tel dispositif Withdrawn EP1528261A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200301344A ES2265198A1 (es) 2003-06-06 2003-06-06 Dispositivo acumulador para una instalacion hidraulica y electrobomba que comprende dicho dispositivo.
ES200301344 2003-06-06

Publications (1)

Publication Number Publication Date
EP1528261A1 true EP1528261A1 (fr) 2005-05-04

Family

ID=33484267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04102387A Withdrawn EP1528261A1 (fr) 2003-06-06 2004-05-28 Dispositif d'accumulateur pour un système hydraulique et pompe électrique avec un tel dispositif

Country Status (3)

Country Link
US (1) US20040247447A1 (fr)
EP (1) EP1528261A1 (fr)
ES (1) ES2265198A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2535599A1 (fr) * 2011-06-17 2012-12-19 Gasparin, Giulia Vase d'expansion avec dispositif résilient
JP2017065575A (ja) * 2015-09-30 2017-04-06 マツダ株式会社 車両の回生システム
DE102020101128A1 (de) 2020-01-20 2021-07-22 Schaeffler Technologies AG & Co. KG Druckspeichersystem zur hydraulischen Getriebesteuerung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0321376A2 (fr) * 1987-12-18 1989-06-21 Fernando Banus Garcia Appareil pour contrôler la mise en marche et l'arrêt d'une pompe hydraulique
US5727529A (en) * 1994-01-14 1998-03-17 Walbro Corporation Pressure control valve for a fuel system
DE19709779A1 (de) * 1997-03-10 1998-09-17 Itt Mfg Enterprises Inc Druckmittelspeicher

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2345124A (en) * 1941-12-01 1944-03-28 New York Air Brake Co Accumulator
US2299611A (en) * 1942-06-03 1942-10-20 United Aircraft Prod Pressure accumulator
US3559727A (en) * 1968-12-20 1971-02-02 United Aircraft Prod Accumulator-reservoir in a cooling system
US4723577A (en) * 1986-10-22 1988-02-09 Sundstrand Corporation Thermal expansion reservoir
US4836409A (en) * 1988-02-18 1989-06-06 Amtrol Inc. Integral diaphragm-liner bladder for hydropneumatic tank
US5590631A (en) * 1994-01-14 1997-01-07 Walbro Corporation Fuel system accumulator
US5868168A (en) * 1997-08-04 1999-02-09 Hydril Company Pulsation dampener diaphragm
ES1039006Y (es) * 1997-12-22 1999-03-01 Ind Ibaiondo S A Vaso de expansion con membrana fija, perfeccionado
US6758657B1 (en) * 2002-06-20 2004-07-06 The Gorman-Rupp Company Electromagnetically driven diaphragm pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0321376A2 (fr) * 1987-12-18 1989-06-21 Fernando Banus Garcia Appareil pour contrôler la mise en marche et l'arrêt d'une pompe hydraulique
US5727529A (en) * 1994-01-14 1998-03-17 Walbro Corporation Pressure control valve for a fuel system
DE19709779A1 (de) * 1997-03-10 1998-09-17 Itt Mfg Enterprises Inc Druckmittelspeicher

Also Published As

Publication number Publication date
ES2265198A1 (es) 2007-02-01
US20040247447A1 (en) 2004-12-09

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