US20040247447A1 - Accumulator device for a hydraulic installation and electric pump including the device - Google Patents
Accumulator device for a hydraulic installation and electric pump including the device Download PDFInfo
- Publication number
- US20040247447A1 US20040247447A1 US10/860,738 US86073804A US2004247447A1 US 20040247447 A1 US20040247447 A1 US 20040247447A1 US 86073804 A US86073804 A US 86073804A US 2004247447 A1 US2004247447 A1 US 2004247447A1
- Authority
- US
- United States
- 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.)
- Abandoned
Links
- 238000009434 installation Methods 0.000 title claims abstract description 17
- 239000012528 membrane Substances 0.000 claims abstract description 47
- 238000009825 accumulation Methods 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 230000000694 effects Effects 0.000 description 3
- 230000005355 Hall effect Effects 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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 .
- FIG. 1 shows a longitudinal section of the accumulator device of this invention when there are consumer points open and the pump of the hydraulic installation is running.
- FIG. 2 shows a longitudinal section of the accumulator device of this invention when the pump is stopped and the membrane is totally unfurled.
- FIG. 3 shows a longitudinal section of the accumulator device of this invention which includes a magnet integral to the moving support element.
- FIG. 4 shows a longitudinal section of the device of this invention integrated into an electrically-driven pump.
- FIG. 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 2 a that defines two sections.
- the fold zone 2 a 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 membrane 2 is unfurlable, 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.
- FIG. 1 shows an accumulator device that can be installed in any part of the hydraulic installation.
- the position of the membrane 2 of FIG. 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 FIG. 2.
- the electronic controller, or appliance which controls the stopping and starting of the hydraulic pump, will then proceed to stop the pump.
- FIG. 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.
- FIG. 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)
Abstract
Accumulator device for a hydraulic installation which includes an interior membrane, the membrane forming a fluid-accumulation cavity. It is characterised in that the membrane includes a fold which forms two sections, a first section from the wall of the cylindrical body to the fold and a second section from the fold to the moving support element, with the fold zone moving as the moving support element moves. It allows sufficient volumes of water accumulation to space apart the starting and stopping of the electrically-driven pump, but with small diameters of the membrane's moving support element.
Description
- This invention relates to an accumulator device for a hydraulic installation and to an electrically-driven pump which includes said accumulator device.
- Known in the art are 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.
- Also known are 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. Thus, 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.
- Also known are 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. Such 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. When the hydraulic pressure applied on the membrane overcomes the action of the spring the moving support element is displaced and the membrane is deformed elastically, increasing the volume of the 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.
- No electrically-driven pumps are known with accumulator devices such as those described.
- 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.
- In accordance with this objective, 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.
- Thanks to these characteristics, 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. Moreover, 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.
- Preferably, 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. In such cases, 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.
- In accordance with the same objective, the electrically-driven pump of this invention is characterised in that it includes an accumulator device such as that described in
claim 1. - For a better understanding of all that has been set out some drawings are attached which show, schematically and solely by way of non-restrictive example, a practical case of embodiment.
- In said drawings,
- FIG. 1 shows a longitudinal section of the accumulator device of this invention when there are consumer points open and the pump of the hydraulic installation is running.
- FIG. 2 shows a longitudinal section of the accumulator device of this invention when the pump is stopped and the membrane is totally unfurled.
- FIG. 3 shows a longitudinal section of the accumulator device of this invention which includes a magnet integral to the moving support element.
- FIG. 4 shows a longitudinal section of the device of this invention integrated into an electrically-driven pump.
- FIG. 1 shows an accumulator device of this invention that includes a
cylindrical body 1 and whose main components consist in aninterior membrane 2 attached between amoving support element 3 and a guidingelement 4 for saidmembrane 2, and aspring 5 mounted between thecylindrical body 1 and said guidingelement 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. Themembrane 2 includes afold 2 a that defines two sections. Thefold zone 2 a moves as themoving support element 3 moves under the action of the water pressure in the hydraulic circuit. Said movingelement 3 provides a secure anchorage for the guidingelement 4 to themembrane 2, and a good base basis for preventing undesired unfurling movements of themembrane 2. Theelement 4 serves as a guide for the membrane during its travel and prevents it expanding laterally. In its turn, thespring 5 is compressed under the effect of pressurisation by the water, storing the energy necessary to move themembrane 2 in the opposite direction and evacuate the accumulated volume of water to the hydraulic installation. - Thanks to the fact that the
membrane 2 is unfurlable, the travel-run it makes is greater than that which can be made by a flat membrane submitted to elastic deformation. Thus, the device of this invention accumulates a greater volume of water than the devices known in the state of the art. - FIG. 1 shows an accumulator device that can be installed in any part of the hydraulic installation. The position of the
membrane 2 of FIG. 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. Thespring 5 of the accumulator is compressed by the effect of pressure and themembrane 2 passes into the position shown in FIG. 2. The electronic controller, or appliance which controls the stopping and starting of the hydraulic pump, will then proceed to stop the pump. - When any valve in the installation is opened again the pressure falls and the
spring 5 will tend to return to its initial position along with themembrane 2 so that a certain volume of water will be evacuated. The internal pressure of the installation will gradually fall in accordance with release of the volume of water accumulated until it reaches a pressure at which the controller or corresponding appliance sets the pump running again. - FIG. 3 shows an accumulator device that forms part of an electronic controller or appliance for stopping or starting a hydraulic pump. In this case the
moving support element 3 has a built-inmagnet 6 and, likewise, when any valve in the installation is opened and the pressure falls thespring 5 tends to return to its original position. Themoving support element 3, together with themembrane 2, likewise regains its initial position, while the pressure of the installation falls steadily until it reaches a pressure at which themagnet 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. - FIG. 4 shows an accumulator device of this invention integrated into an electrically-driven pump. In this case the moving
element 3 does not include amagnet 6 and thus acts as a simple water-accumulation device. It is nevertheless possible for the accumulator device integrated into the electrically-driven pump to include amagnet 6 located on themoving support element 3, while saidmagnet 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.
Claims (3)
1. An accumulator device for a hydraulic installation which includes a cylindric body (1), an interior membrane (2) attached by its ends to the wall of the cylindrical body (1) and by its central zone to a moving support element (3), the membrane (2) forming a fluid-accumulation cavity, and which further includes a spring (5) to counteract a pressure of the fluid, wherein the membrane (2) includes a fold (2 a) which forms two sections, a first section from the wall of the cylindrical body (1) to the fold (2 a) and a second section from the fold (2 a) to the moving support element (3), with the fold zone (2 a) moving as the moving support element (3) moves.
2. The accumulator device for the hydraulic installation according to claim 1 , wherein it includes a magnet (6) integral to the moving support element, the magnet (6) exciting a sensor mounted in an appliance for controlling a starting and stopping of a hydraulic pump, or mounted in an electrically-driven pump.
3. An electrically-driven pump wherein it includes an accumulator device in accordance with claim 1.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200301344A ES2265198A1 (en) | 2003-06-06 | 2003-06-06 | Accumulator device for a hydraulic installation and electric pump including said device. |
ES200301344 | 2003-06-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040247447A1 true US20040247447A1 (en) | 2004-12-09 |
Family
ID=33484267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/860,738 Abandoned US20040247447A1 (en) | 2003-06-06 | 2004-06-03 | Accumulator device for a hydraulic installation and electric pump including the device |
Country Status (3)
Country | Link |
---|---|
US (1) | US20040247447A1 (en) |
EP (1) | EP1528261A1 (en) |
ES (1) | ES2265198A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2535599A1 (en) * | 2011-06-17 | 2012-12-19 | Gasparin, Giulia | Expansion tank with elastic devices |
JP2017065575A (en) * | 2015-09-30 | 2017-04-06 | マツダ株式会社 | Vehicular regeneration system |
DE102020101128A1 (en) | 2020-01-20 | 2021-07-22 | Schaeffler Technologies AG & Co. KG | Pressure storage system for hydraulic transmission control |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2299611A (en) * | 1942-06-03 | 1942-10-20 | United Aircraft Prod | Pressure accumulator |
US2345124A (en) * | 1941-12-01 | 1944-03-28 | New York Air Brake Co | 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 |
US4879439A (en) * | 1987-12-18 | 1989-11-07 | Fernando Banus Garcia | Apparatus for controlling start up and stop down of a hydraulic pump |
US5868168A (en) * | 1997-08-04 | 1999-02-09 | Hydril Company | Pulsation dampener diaphragm |
US6758657B1 (en) * | 2002-06-20 | 2004-07-06 | The Gorman-Rupp Company | Electromagnetically driven diaphragm pump |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5590631A (en) * | 1994-01-14 | 1997-01-07 | Walbro Corporation | Fuel system accumulator |
US5727529A (en) * | 1994-01-14 | 1998-03-17 | Walbro Corporation | Pressure control valve for a fuel system |
DE19709779A1 (en) * | 1997-03-10 | 1998-09-17 | Itt Mfg Enterprises Inc | Pressure medium accumulator, particularly for hydraulic or pneumatic wheel slip regulating system in road vehicle |
ES1039006Y (en) * | 1997-12-22 | 1999-03-01 | Ind Ibaiondo S A | EXPANSION VESSEL WITH FIXED MEMBRANE, PERFECTED |
-
2003
- 2003-06-06 ES ES200301344A patent/ES2265198A1/en active Pending
-
2004
- 2004-05-28 EP EP04102387A patent/EP1528261A1/en not_active Withdrawn
- 2004-06-03 US US10/860,738 patent/US20040247447A1/en not_active Abandoned
Patent Citations (8)
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 |
US4879439A (en) * | 1987-12-18 | 1989-11-07 | Fernando Banus Garcia | Apparatus for controlling start up and stop down of a hydraulic pump |
US4836409A (en) * | 1988-02-18 | 1989-06-06 | Amtrol Inc. | Integral diaphragm-liner bladder for hydropneumatic tank |
US5868168A (en) * | 1997-08-04 | 1999-02-09 | Hydril Company | Pulsation dampener diaphragm |
US6758657B1 (en) * | 2002-06-20 | 2004-07-06 | The Gorman-Rupp Company | Electromagnetically driven diaphragm pump |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2535599A1 (en) * | 2011-06-17 | 2012-12-19 | Gasparin, Giulia | Expansion tank with elastic devices |
JP2017065575A (en) * | 2015-09-30 | 2017-04-06 | マツダ株式会社 | Vehicular regeneration system |
DE102020101128A1 (en) | 2020-01-20 | 2021-07-22 | Schaeffler Technologies AG & Co. KG | Pressure storage system for hydraulic transmission control |
Also Published As
Publication number | Publication date |
---|---|
EP1528261A1 (en) | 2005-05-04 |
ES2265198A1 (en) | 2007-02-01 |
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