EP1346267B1 - Dispositif de production de surpression - Google Patents

Dispositif de production de surpression Download PDF

Info

Publication number
EP1346267B1
EP1346267B1 EP01271566A EP01271566A EP1346267B1 EP 1346267 B1 EP1346267 B1 EP 1346267B1 EP 01271566 A EP01271566 A EP 01271566A EP 01271566 A EP01271566 A EP 01271566A EP 1346267 B1 EP1346267 B1 EP 1346267B1
Authority
EP
European Patent Office
Prior art keywords
valve
pressure
additional
overpressure
line
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
Application number
EP01271566A
Other languages
German (de)
English (en)
Other versions
EP1346267A1 (fr
Inventor
Bertram Bauer
Harald Merz
Wolfgang Paessler
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1346267A1 publication Critical patent/EP1346267A1/fr
Application granted granted Critical
Publication of EP1346267B1 publication Critical patent/EP1346267B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/85986—Pumped fluid control
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87217—Motor

Definitions

  • the present invention relates to a device according to the preamble of claim 1 and the use of an additional valve according to the preamble of claim 7 for a device according to the invention.
  • a pump having a pressure side and a suction side, wherein when generating an overpressure the pressure side with the system and the suction side via at least a first valve, in particular
  • a solenoid valve that communicates with the ambient pressure, and wherein the first valve throttles the intake flow due to its cross section
  • devices that are provided with a system, the pressure side or the suction side of a compressor or a pump via two solenoid valves connect, that in the system optionally an overpressure or a negative pressure can be generated.
  • suitable devices are shown in Figures 1 and 2.
  • FIG. 1 shows a device which has a compressor or a pump P with a suction side 10 and a pressure side 20.
  • the pressure side 20 of the pump P is associated with a check valve R, which is connected via a power L2 to the pressure side 20 of the pump P.
  • the device shown is intended to generate in a system S an overpressure or a negative pressure.
  • a first solenoid valve MV1 and a second solenoid valve MV2 are provided, via which the pump P can be connected to the system S in a suitable manner.
  • the first solenoid valve MV1 and the second solenoid valve MV2 are shown in their respective rest position. In this rest position, the system S is connected via a line L7, the second solenoid valve MV2, a line L4, a line L5, the first solenoid valve MV1 and a line L8 to the ambient pressure.
  • the second solenoid valve MV2 is switched over.
  • the system S is connected to the pressure side 20 of the pump P via the second solenoid valve MV2, the line L3, the check valve R and the line L2.
  • the line L4 is closed by the second solenoid valve MV2.
  • the line L6 is closed by the first solenoid valve located in its rest position MV1.
  • the suction side 10 of the pump P is in overpressure operation via a line L1, a line L5, the first solenoid valve MV1 and a line L8 with the ambient pressure U in combination.
  • the first solenoid valve MV1 is switched over, based on the representation of FIG. 1, while the second solenoid valve MV2 remains in the rest position shown in FIG. In this position of the first solenoid valve MV1, the line L5 is closed by the first solenoid valve MV1, while the line L6 is connected by the first solenoid valve MV1 to the line L8 and thus to the ambient pressure.
  • the pressure side 20 of the pump P is connected via the line L8, the first solenoid valve 'MV1, the line L6, the line L3, the check valve R and the line L2 to the ambient pressure in combination.
  • the system S is connected via the line L7, the second solenoid valve MV2, the line L4 and the line L1 to the suction side 10 of the pump P in combination.
  • the system S is in communication with the ambient pressure U when the first solenoid valve MV1 and the second solenoid valve MV2 are in their rest position.
  • the device according to FIG. 2 likewise has a pump P with a suction side 10 and a pressure side 20.
  • the pump P is again associated with a check valve R, which via a line L12 to the pressure side 20th the pump P is connected.
  • the system in which the overpressure or the negative pressure is to be generated is again marked S, the ambient pressure being indicated by U.
  • the device has a first solenoid valve MV1 and a second solenoid valve MV2, whose respective rest positions are shown in FIG.
  • the line L17 is closed by the second solenoid valve MV2, while the line L15 is closed by the first solenoid valve MV1.
  • the system S is sealed in the rest position of the first solenoid valve MV1 and the second solenoid valve MV2.
  • the second solenoid valve MV2 is switched in the apparatus of Figure 2, while the first solenoid valve MV1 remains in the rest position shown in Figure 2.
  • the system S is connected to the pressure side 20 of the pump P via the line L17, the second solenoid valve MV2, the line L13, the check valve R and the line L12.
  • the line L15 is closed by the first solenoid valve MV1, as well as the line L14 is closed by the second solenoid valve MV2.
  • the suction side 10 of the pump P is in overpressure operation via the line L11, the first solenoid valve MV1 and the line L16 with the ambient pressure U in combination.
  • the first solenoid valve MV1 is switched relative to the illustration of FIG. 2, while the second solenoid valve MV2 remains in its rest position. This will cause the system S to go through a section the line L17 closed by the second solenoid valve MV2, the line L15, the first solenoid valve MV1 and the line L11 are connected to the suction side 10 of the pump P.
  • the pressure side 20 of the pump P is in the vacuum operation via the line L12, the check valve R, the line L13, the second solenoid valve MV2, the line L14 and a portion of the closed by the first solenoid valve MV1 line L16 with the ambient pressure U in combination.
  • a disadvantage of the known devices shown in Figures 1 and 2 is that the Ansaugvolumenstrom is throttled by the respective suction-side first solenoid valve MV1, whereby the compressor or the pump P reaches a lower pneumatic power.
  • Such a valve with sufficiently large cross-section requires large dimensions, is heavy and therefore expensive.
  • a device according to the preamble of claim 1 is already known.
  • the additional valve is used to provide the necessary intake cross-section at the start of a screw compressor until the first valve throttling during operation, the intake valve by a U-pressure is opened in the system.
  • the known additional valve is permanently open, which causes problems when the compressor according to the prior art described above in connection with Fig. 2 also for generating a negative pressure in the system to be used because an open additional valve there generating a negative pressure in the system would prevent.
  • US-A-4 526 155, US-A-4 325 677 and US-A-4 214 506 disclose valves having a control pressure inlet communicating with a control space and a valve inlet and a valve outlet of the valves with each other connects when in the control room a predetermined pressure is exceeded.
  • none of the known valves is arranged on the suction side of a pump in order to increase the intake cross section of a throttle valve in the intake flow of the pump.
  • the present invention seeks to improve a device of the type mentioned in that it is suitable for generating a negative pressure in the system without much control effort.
  • the device according to the invention provides means which provide an additional cross-section for the Ansaugvolumenstrom when generating an overpressure, a higher pneumatic power can be achieved with the pump. Furthermore, the dimensions and weight of the first valve need not be increased and, if a second valve is provided, the same or similar first and second valves may be used.
  • the first valve is a solenoid valve
  • the additional valve according to the invention is opened by a pressure generated in the system
  • the device according to the invention further provides that the additional valve is closed with decreasing pressure in the system, preferably automatically, for example by the decreasing pressure itself.
  • a second valve in particular a solenoid valve is provided, wherein the pressure side of the pump is in communication with the system when generating the overpressure via the second valve.
  • the device according to the invention may further be adapted to generate a negative pressure in the system relative to the ambient pressure. It can be provided that in the generation of the negative pressure, the pressure side of the pump via the first valve is in communication with the ambient pressure while the suction side of the pump via the second valve is in communication with the system.
  • the additional valve in the generation of an overpressure additionally has the function of a pressure relief valve.
  • This embodiment is particularly suitable when the additional valve is connected via a line to the system and thereby prevail in at least a portion of the additional valve approximately the same pressure conditions as in the system.
  • the present invention further relates to a valve, in particular an additional valve for the device according to the invention, as already mentioned above.
  • the valve has a control pressure inlet, which is in communication with a control chamber, and that the valve inlet is brought into connection with the valve outlet when in the control chamber, a predetermined pressure is exceeded.
  • a control pressure inlet which is in communication with a control chamber
  • the valve inlet is brought into connection with the valve outlet when in the control chamber, a predetermined pressure is exceeded.
  • such a valve may be actuated by the pressure prevailing in the system, thereby providing an additional cross section for the intake flow rate when generating an overpressure, without the need for additional energy sources to actuate the valve.
  • valve inlet is connected to the valve outlet by a spatial extent of the control chamber.
  • control room can be limited for example by a membrane that allows the spatial extent of the control room.
  • the control chamber can be formed for example by a housing open on one side, wherein the open side of the control chamber is then limited by the membrane.
  • the housing may, of course, have suitable connections to allow, for example, a connection of the control chamber to a system in which an overpressure is to be generated.
  • valve according to the invention can further be provided that on the side facing away from the control chamber side of the diaphragm, a valve chamber is provided which communicates with a valve outlet, and that the valve chamber is sealed against the valve inlet in the resting state of the membrane.
  • valve chamber has a valve seat with a valve disc interacts.
  • the valve seat and the valve disc make a mutual seal in the closed state of the valve.
  • the membrane acts on the valve disk in such a spatial extent of the control chamber, that the valve chamber is connected to the valve inlet.
  • the valve disk is usually moved away from the valve seat.
  • the membrane can act in this context, for example via a rod-shaped element on the valve disk.
  • the membrane and / or the rod-shaped element and / or the valve disk may be formed in one piece.
  • the membrane and / or the rod-shaped element and / or the valve disk can be formed from a rubber-elastic material.
  • the rod-shaped element must be made stiff enough to be able to transfer the required force from the membrane to the valve disk.
  • valve connects the control pressure inlet to the valve inlet and / or the valve outlet when a maximum pressure in the control chamber is exceeded.
  • valve according to the invention can additionally fulfill the function of a pressure relief valve.
  • a support plate acts on the membrane to seal the control chamber through the membrane opposite the valve chamber, as long as the maximum pressure in the control chamber is not exceeded.
  • the support plate can be biased by a spring element, such as a coil spring, to act in a suitable manner on the membrane. If the valve according to the invention also realizes the function of a pressure relief valve, the maximum pressure at which the pressure relief valve opens can be influenced by the spring force of such a spring element.
  • a spring element such as a coil spring
  • valve disk is biased by a spring element in the direction of the valve seat.
  • FIG. 3 shows an embodiment of the device according to the invention, which is obtained when applying the principles of the present invention to the device shown in Figure 1 according to the prior art.
  • the embodiment according to FIG. 3 therefore shows (again) a device which has a compressor or a pump P with a suction side 10 and a pressure side 20.
  • the pressure side 20 of the pump P is associated with a check valve R, which has a power L2 with the pressure side 20 of the pump P is connected.
  • the device shown is intended to generate in a system S an overpressure or a negative pressure.
  • a first solenoid valve MV1 and a second solenoid valve MV2 are provided, via which the pump P can be connected to the system S in a suitable manner.
  • the first solenoid valve MV1 and the second solenoid valve MV2 are shown in their respective rest position. In this rest position, the system S is connected via a line L7, the second solenoid valve MV2, a line L4, a line L5, the first solenoid valve MV1 and a line L8 to the ambient pressure.
  • an additional valve ZV is additionally provided in the embodiment shown in FIG. 3, which is connected in parallel to the first solenoid valve MV1 via two lines L9, L10.
  • the additional valve may be formed by a valve according to the invention, in which case the line L9 is connected to the valve outlet of the additional valve, while the line L10 is connected to the valve inlet of the additional valve ZV.
  • the control chamber of the additional valve ZV is in this case via a control line SL to the system S or a leading to this line L7 in combination. In the rest position of the additional valve ZV shown in FIG. 3, both the line L9 and the line L10 are closed by the additional valve ZV.
  • the generation of an overpressure in the device shown in FIG. 3 begins by the switching over of the second magnetic valve MV2 Solenoid valve MV1 in its illustrated Rest position remains.
  • the additional valve ZV is initially closed.
  • the pressure side 20 of the pump P is connected to the system S in the switched-over second valve MV2 via the line L2, the check valve R, the line L3, the second solenoid valve MV2 and the line L7.
  • the suction side 10 of the pump P is at this time via the line L1, the first solenoid valve MV1 and the line L8 with the ambient pressure in communication, as already explained.
  • the auxiliary valve ZV opens by connecting its valve inlet with its valve outlet and thus the lines L9 and L10.
  • an additional cross section namely the cross section of the additional valve ZV, is provided for the intake volume flow, so that the throttling of the intake volume flow through the first magnetic valve MV1 no longer has a negative effect.
  • the additional valve ZV returns to its rest position, in which the lines L9 and L10 are closed.
  • the additional valve ZV On the generation of a negative pressure in the system S, the additional valve ZV has no effect, since it remains in the generation of a negative pressure in its illustrated rest position 'in which the lines L9 and L10 are closed by the additional valve ZV.
  • the first solenoid valve MV1 switched, while the second solenoid valve MV2 and the additional valve ZV remain in the rest position shown in Figure 1.
  • the line L5 In this position of the first solenoid valve MV1, the line L5 is closed by the first solenoid valve MV1, while the line L6 is connected by the first solenoid valve MV1 to the line L8 and thus to the ambient pressure.
  • the pressure side 20 of the pump P is connected via the line L8, the first solenoid valve MV1, the line L6, the line L3, the check valve R and the line L2 with dem.Um worksstik in combination.
  • the system S is connected via the line L7, the second solenoid valve MV2, the line L4 and the line L1 to the suction side 10 of the pump P in combination.
  • Figure 4 shows an apparatus which is obtained by applying the principles of the present invention to the known apparatus of Figure 2 according to which the system S is sealed when the solenoid valves are in their rest position.
  • the device according to FIG. 4 therefore also has a pump P with a suction side 10 and a pressure side 20.
  • the pump P is again associated with a check valve R, which is connected via a line L12 to the pressure side of the pump P.
  • the system in which the overpressure or the negative pressure is to be generated is again marked S, the ambient pressure being indicated by U.
  • the device has a first solenoid valve MV1 and a second solenoid valve MV2, whose respective rest position is shown in FIG.
  • the means which provide an additional cross-section for the intake volumetric flow when an overpressure is generated are formed by an additional valve ZV, which, like the embodiment according to FIG. 3, can be formed by a valve according to the invention.
  • the generation of an overpressure in the system S begins with the switching of the second solenoid valve MV2 , whereby, the system S is connected via the line L17, the second solenoid valve MV2, the line L13, the check valve R and the line L12 to the pressure side 20 of the pump P, while the suction side 10 of the pump P via the line L11, the first solenoid valve MV1 and line L16 communicates with the ambient pressure.
  • the additional valve ZV is closed as mentioned, that is, it discharges the lines L18 and L19, via which it is connected in parallel with the first solenoid valve MV1.
  • At least one area of the additional valve ZV for example a control room, is connected via a control line SL to the system S or to a line L17 leading to it.
  • the additional valve opens ZV and connects the lines L18 and L19, whereby the additional cross-section for the intake volume flow is provided, so that the throttling of the intake flow through the first solenoid valve MV1 no longer has a negative effect.
  • the additional valve ZV returns to its rest position, in which it. Lines L18 and L19 closes, as shown in Figure 4.
  • the additional valve ZV no effect on the generation of a negative pressure in the system S, since it remains in the illustrated rest position in which it closes the lines L18 and L19.
  • the first solenoid valve MV1 is switched with reference to the illustration of FIG. 4, while the second solenoid valve MV2 and the additional valve ZV remain in the rest position.
  • the system S is connected to the suction side 10 of the pump P via a portion of the line L17 closed by the second solenoid valve MV2, the line L15, the first solenoid valve MV1, and the line L11.
  • the pressure side 20 of the pump P is in the vacuum operation via the line L12, the check valve R, the line L13, the second solenoid valve MV2, the line L14 and a portion of the closed by the first solenoid valve MV1 line L16 with the ambient pressure U in combination.
  • FIG. 5 shows a schematic representation of a valve according to the invention, which can be used for example as an additional valve in the apparatus of Figure 3 and the apparatus of Figure 4.
  • the valve is in the rest position, in which it is closed. In this closed position, the valve inlet 100 and the valve outlet 101 are not connected to each other.
  • a generally designated 110 valve housing forms, inter alia, the lower portion of a control chamber 103, in which a control pressure inlet 102 opens.
  • the control chamber 103 is bounded above by a membrane 104, the periphery of which is sealed to the housing 110. Above the membrane 104 is a valve chamber 105 into which the valve outlet 101 opens.
  • valve chamber 105 which is closed as shown in Figure 5, forms by its upper end portion a valve seat 108.
  • a valve plate 107 cooperates, which is connected by a rod-shaped element 106 with the membrane 104.
  • the valve disk 107 is biased towards the valve seat by a spring element 109, so that a good seal between valve disk 107 and valve seat 108 results.
  • a valve inlet chamber 111 is provided, into which the valve inlet 100 opens.
  • a valve inlet chamber 111 may, for example, be dispensed with if the valve inlet is to be formed by the valve environment.
  • a spring 109 biases the valve plate 107 in the direction of the valve seat 108, both the valve inlet 100 and the valve outlet 101 is sealed in the rest position of the valve.
  • FIG. 6 shows the valve of FIG. 5 in a working position in which the valve inlet 100 is in communication with the valve outlet 101. Due to an overpressure in the control chamber 103, the diaphragm 104 has deformed in such a way that it acts on the valve plate 107 via the rod-shaped element 106 in such a way that it lifts off the valve seat 108 against the bias by the spring 109. Thereby, the valve inlet 100 is connected via the valve inlet chamber 111 and the valve chamber 105 to the valve outlet 101, so that the open state of the valve results. As soon as the overpressure in the control chamber 103 decreases again, the membrane 104 returns to its rest position, as a result of which the valve disk 107 lowers and rests on the valve seat 108 under sealing.
  • FIG. 7 shows a sectional view of a possible practical embodiment of the valve according to the invention.
  • the valve again has a housing generally designated 110.
  • a valve outlet 101 opens into a valve chamber 105.
  • the valve inlet 100 is formed by an unillustrated distance between the valve plate 107 and the valve seat 108 which arises when the valve opens.
  • a control pressure inlet 102 opens into a control chamber 103, which is bounded above by a membrane 104.
  • the valve additionally works as a pressure relief valve.
  • a support plate 112 is provided, which acts under the action of a spring 113 on the outer region of the membrane 104 such that they face the control chamber 103 during normal operation the valve chamber 105 seals.
  • the mode of operation for connecting the valve inlet 100 to the valve outlet 101 of the valve shown in FIG. 7 corresponds to the mode of operation as explained with reference to FIGS. 5 and 6.
  • the diaphragm 104 deforms such that the rod-shaped element 106 and the valve disk 107 formed integrally therewith are moved upward, so that the mentioned distance between the valve disk 107 and the valve seat 108 results.
  • the peripheral portion of the diaphragm 104 moves upward against the bias exerted by the spring 113, and therefore connects the control pressure inlet 102 to the valve outlet 101, so that the function of a relief valve is achieved.
  • valve disk 107 is formed in one piece with the rod-shaped element 106, for example made of a solid plastic material, while the membrane 104 is formed from an elastic material.
  • the membrane 104, the rod-shaped element 106 and the valve disk 107 are integrally formed from a material which is sufficiently elastic at least with a thin cross-section to take over the function of the membrane 104.
  • first valve and the second valve have been described in terms of respective solenoid valves.
  • the invention is not limited to the use of such solenoid valves, but can be realized with any other valves, such as pneumatic valves.
  • the medium flowing through the conduits of the apparatus according to the invention and the medium contained in the system S whose pressure is to be increased or decreased may be the same or different.
  • suitable separation means for example in the form of a membrane or the like may be provided.
  • Suitable flow medium are all suitable liquid gaseous substances in question.
  • the ambient pressure U does not necessarily have to be an atmospheric ambient pressure, but as ambient pressure, any pressure prevailing in another system may also be considered.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Driven Valves (AREA)
  • Safety Valves (AREA)
  • Check Valves (AREA)
  • Servomotors (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Fluid Pressure (AREA)
  • Magnetically Actuated Valves (AREA)
  • Details Of Valves (AREA)

Claims (19)

  1. Dispositif pour produire au moins momentanément une surpression dans un système (S) par rapport à une pression environnante (U), comprenant une pompe (P) qui possède un côté pression (20) et un côté aspiration (10), dans lequel, lors de la production de surpression, le coté pression (20) est relié au système (S) et le côté aspiration (10) est relié à la pression environnante (U) par au moins une première soupape (MV1), en particulier une soupape magnétique, qui possède une section transversale d'étranglement du débit volumétrique d'aspiration, et avec une soupape auxiliaire (ZV) munie d'une section transversale supplémentaire pour le débit volumétrique d'aspiration,
    caractérisé par
    des moyens (SL) pour l'ouverture de la soupape auxiliaire (ZV) par une surpression produite dans le système (S).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    la soupape auxiliaire (ZV) est connectée parallèlement à la première soupape (MV1) lors de la production de surpression.
  3. Dispositif selon la revendication 1 ou 2,
    caractérisé par
    des moyens pour fermer la soupape auxiliaire (ZV) lorsque la pression baisse dans le système (S).
  4. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce qu'
    une deuxième soupape (MV2), en particulier une soupape magnétique, relie le côté pression de la pompe (P) au système lors de la production de surpression.
  5. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce qu'
    il est en outre approprié pour produire une dépression dans le système (S) par rapport à la pression environnante (U), et lors de la production de dépression, le côté pression (20) dé la pompe (P) est relié à la pression environnante (U) par la première soupape (MV1), tandis que le côté aspiration de la pompe (P) est relié au système (S) par une deuxième soupape (MV2).
  6. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que
    lors de la production de surpression, la soupape auxiliaire (ZV) exerce en outre la fonction de soupape de surpression.
  7. Utilisation d'une soupape auxiliaire (ZV) munie d'une admission de soupape (100) et d'un échappement de soupape (101) qui peuvent être reliés entre eux, d'une admission de pression de commande (102) reliée à une chambre de commande (103), et de moyens (104, 106, 107, 108) pour relier l'admission de soupape (100) à l'échappement de soupape (101) lorsque la pression dans la chambre de commande (103) dépasse une pression prédéfinie, pour un dispositif selon l'une des revendications précédentes, la soupape auxiliaire (ZV) offrant une section transversale supplémentaire pour le débit volumétrique d'aspiration lors de la production de surpression,
    caractérisée en ce que
    la soupape auxiliaire (ZV) est ouverte par une surpression produite dans le système (S).
  8. Utilisation selon la revendication 7,
    caractérisée en ce que
    l'admission de soupape peut être reliée à l'échappement de soupape (101) par la dilatation de la chambre de commande (103).
  9. Utilisation selon la revendication 7 ou 8,
    caractérisée en ce que
    la chambre de commande (103) est délimitée par une membrane (104) qui permet une dilatation de l'espace de commande (103).
  10. Utilisation selon la revendication 9,
    caractérisée en ce que
    du côté de la membrane (104) opposé à la chambre de commande (103) est prévue une chambre de soupape reliée à l'échappement de soupape (101), et la chambre de soupape (105) est isolée de manière étanche par rapport à l'admission de soupape lorsque la membrane (104) est au repos.
  11. Utilisation selon la revendication 10,
    caractérisée en ce que
    la chambre de soupape (105) possède un siège de soupape (108) collaborant avec une tête de soupape (107).
  12. Utilisation selon la revendication 11,
    caractérisée en ce que
    lors de la dilatation de la chambre de commande (103), la membrane (104) agit sur la tête de soupape (107) pour relier la chambre de soupape (105) à l'admission de soupape (100).
  13. Utilisation selon la revendication 11 ou 12,
    caractérisée par
    un élément en forme de tige (106) agencé entre la membrane (104) et la tête de soupape (107).
  14. Utilisation selon la revendication 13,
    caractérisée en ce que
    la membrane (104) et/ou l'élément en forme de tige (106) et/ou la tête de soupape (107) sont formés d'une seule pièce.
  15. Utilisation selon la revendication 13 ou 14,
    caractérisée en ce que
    la membrane (104) et/ou l'élément en forme de tige (106) et/ou la tête de soupape (107) sont constitués d'un matériau élastique caoutchouteux.
  16. Utilisation selon l'une des revendications 7 à 15,
    caractérisée par
    des moyens pour relier l'admission de pression de commande (102) à l'admission de soupape (100) et/ou à l'échappement de soupape (101) en cas de dépassement d'une pression maximale dans la chambre de commande (103).
  17. Utilisation selon l'une des revendications 10 à 16,
    caractérisée en ce qu'
    une plaque d'appui (112) agit sur la membrane (104) pour isoler de manière étanche la chambre de commande (103) par rapport à la chambre de soupape (105) avec la membrane (104) tant que la pression maximale n'est pas dépassée dans la chambre de commande (103).
  18. Utilisation selon la revendication 17,
    caractérisée en ce que
    la plaque d'appui (112) est précontrainte par un élément de ressort (113) pour agir sur la membrane (104).
  19. Utilisation selon l'une des revendications 11 à 18,
    caractérisée en ce que
    la tête de soupape (107) est précontrainte par un élément de ressort (109) en direction du siège de soupape (108).
EP01271566A 2000-12-19 2001-11-30 Dispositif de production de surpression Expired - Lifetime EP1346267B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10063273A DE10063273A1 (de) 2000-12-19 2000-12-19 Überdruckerzeugungsvorrichtung und Ventil
DE10063273 2000-12-19
PCT/DE2001/004504 WO2002050622A1 (fr) 2000-12-19 2001-11-30 Dispositif de production de surpression et vanne

Publications (2)

Publication Number Publication Date
EP1346267A1 EP1346267A1 (fr) 2003-09-24
EP1346267B1 true EP1346267B1 (fr) 2006-02-08

Family

ID=7667773

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01271566A Expired - Lifetime EP1346267B1 (fr) 2000-12-19 2001-11-30 Dispositif de production de surpression

Country Status (6)

Country Link
US (2) US6799601B2 (fr)
EP (1) EP1346267B1 (fr)
JP (1) JP2004516568A (fr)
KR (1) KR20020079841A (fr)
DE (2) DE10063273A1 (fr)
WO (1) WO2002050622A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2868830B1 (fr) * 2004-04-09 2012-11-30 Valeo Climatisation Dispositif de detente ameliore pour circuit de climatisation
US11413408B2 (en) 2014-07-29 2022-08-16 Peter Edenhoffer Positive pressure inspiration device for delivery of medicaments
KR102027787B1 (ko) 2018-02-28 2019-10-02 조선대학교산학협력단 브랜드 퍼스낼리티 맵을 이용한 브랜드 퍼스낼리티 진단 장치

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2757660A1 (de) 1977-12-23 1979-06-28 Bosch Gmbh Robert Hydraulische steuereinrichtung mit wenigstens einem wegeventil
DE2840687A1 (de) 1978-09-19 1980-04-03 Bosch Gmbh Robert Einrichtung zur regelung des foerderstroms und zur begrenzung des foerderdrucks einer verstellbaren pumpe.
AT378041B (de) * 1983-01-13 1985-06-10 Hoerbiger Ventilwerke Ag Einrichtung zum steuern von schraubenverdichtern
NL8300438A (nl) 1983-02-04 1984-09-03 Vialle Bv Drukregelsysteem.
DE3710261A1 (de) * 1987-03-28 1988-10-13 Mahle Gmbh Verfahren zum betreiben eines kompressors
US5199853A (en) * 1991-02-26 1993-04-06 Padden Harvey F Pneumatic flow control system
US5738138A (en) * 1997-03-10 1998-04-14 The Horton Company Reduced water hammer control valve
US6105929A (en) * 1997-11-14 2000-08-22 Salter Labs Control valve for gas supply to a nebulizer
DE19852127B4 (de) * 1998-11-12 2008-09-11 Behr Gmbh & Co. Kg Expansionsorgan und hierfür verwendbare Ventileinheit

Also Published As

Publication number Publication date
US7073769B2 (en) 2006-07-11
KR20020079841A (ko) 2002-10-19
US20030010388A1 (en) 2003-01-16
US6799601B2 (en) 2004-10-05
DE10063273A1 (de) 2002-07-04
DE50108900D1 (de) 2006-04-20
JP2004516568A (ja) 2004-06-03
WO2002050622A1 (fr) 2002-06-27
EP1346267A1 (fr) 2003-09-24
US20040217309A1 (en) 2004-11-04

Similar Documents

Publication Publication Date Title
EP1072556B1 (fr) Système de soutirage pour pompe à essence
EP1851098B9 (fr) Cylindre de frein a accumulateur a ressort et de service combine avec dispositif de respiration
EP3562769B1 (fr) Dispositif d'aspiration
DE3443265A1 (de) Regelventil fuer eine verstellpumpe
EP0888796B1 (fr) Soupape
DE3248622A1 (de) Hochdruckreinigungsgeraet
DE2748079A1 (de) Wasserdruck-verstaerkungssystem und steuerventil sowie steuerverfahren
EP2531734A1 (fr) Servomoteur actionné par un fluide dans une robinetterie
DE102013107826A1 (de) Luftfeder für ein Kraftfahrzeug
EP1519866B1 (fr) Dispositif de ventilation d'un cylindre de freinage
EP1346267B1 (fr) Dispositif de production de surpression
EP0289712B1 (fr) Régulateur de pression
EP1382909B1 (fr) Dispositif de régulation pour brûleur à gaz
DE9002675U1 (de) Steuerventil
DE19949234A1 (de) Ventil, insbesondere Druckregelventil
DE102011052132A1 (de) Schubumluftventil
DE1751928A1 (de) Auf einem Ventilsystem aufgebaute Fluidio-Schaltung
EP0047790A1 (fr) Electrovanne à commande pilote
DE69200205T2 (de) Sicherheitsventil für den Entlüftungskreislauf eines Kfz-Kraftstoffbehälters.
CH511386A (de) Gasventil
DE10222903A1 (de) Druckbegrenzungseinrichtung und Verfahren zum Entlasten einer Druckbegrenzungseinrichtung
DE4228277A1 (de) Bremskraftverstärker
DE3345599A1 (de) Rueckschlagventil
DE851392C (de) Stroemungsmittel-Druckregler
DE2719523A1 (de) Gasventil

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20030721

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MERZ, HARALD

Inventor name: PAESSLER, WOLFGANG

Inventor name: BAUER, BERTRAM

RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT

17Q First examination report despatched

Effective date: 20040805

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RTI1 Title (correction)

Free format text: POSITIVE PRESSURE GENERATION DEVICE

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20060208

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060208

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 50108900

Country of ref document: DE

Date of ref document: 20060420

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060519

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20060208

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20061117

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20061130

Year of fee payment: 6

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20061109

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070601

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20080930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071130