EP1515041A1 - Hydraulikaggregat mit einem Vorratsbehälter für Hydraulik-Flüssigkeit und mit einer Motor-Pumpe-Einheit - Google Patents
Hydraulikaggregat mit einem Vorratsbehälter für Hydraulik-Flüssigkeit und mit einer Motor-Pumpe-Einheit Download PDFInfo
- Publication number
- EP1515041A1 EP1515041A1 EP04020525A EP04020525A EP1515041A1 EP 1515041 A1 EP1515041 A1 EP 1515041A1 EP 04020525 A EP04020525 A EP 04020525A EP 04020525 A EP04020525 A EP 04020525A EP 1515041 A1 EP1515041 A1 EP 1515041A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic unit
- unit according
- interior
- frame
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title 1
- 230000001681 protective effect Effects 0.000 claims description 15
- 101100083446 Danio rerio plekhh1 gene Proteins 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims 1
- 238000004880 explosion Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000002360 explosive Substances 0.000 description 12
- 239000003570 air Substances 0.000 description 9
- 238000005538 encapsulation Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Images
Classifications
-
- 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
- F04B23/00—Pumping installations or systems
- F04B23/02—Pumping installations or systems having reservoirs
- F04B23/025—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir
-
- 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
Definitions
- the invention relates to a hydraulic unit with a reservoir for hydraulic fluid and with one out a motor and a pump driven by this Motor-pump unit.
- hydraulic units are used for various purposes produced in various embodiments.
- the hydraulic units can in addition to the Reservoir and the engine-pump unit with more Components, such. Valves, filters, coolers or monitors, be equipped.
- hydraulic units in which a series of measures to dampen the provided by the engine-pump unit outgoing sound are.
- the invention is based on the object, a hydraulic unit to create the type mentioned, according to the requirements of the Atex Directive 94/9 / EC in potentially explosive atmospheres Fields is used. This is in particular be sure that by a bearing damage heated surface of the pump does not ignite an explosive Atmosphere triggers.
- the invention makes of the type of protection overpressure encapsulation "p" use.
- the invention makes it possible, in addition to the hydraulic unit further components in the Interior of the frame closed on all sides. There these components are also surrounded by protective gas, they do not need the requirements of the Atex Directive meet, so that inexpensive series versions of this Components can be used.
- the invention trained hydraulic unit are from the outside electrical Energy and the protective gas supplied. Are they too Hydraulic pressure control valves in the interior of the Frame only need the leading to consumers Hydraulic lines led out of the frame to become.
- the features of the subclaims 2 to 4 relate to the limitation of the pressure of the protective gas in the interior of the frame to an upper value. Through this Measures become those acting on the walls of the frame Limited forces, so that the design effort for Holding the walls of the frame within reasonable limits.
- the claims 5 to 8 relate to the monitoring of the pressure in Interior of the frame to a lower value. This monitoring ensures that at a pressure drop of the protective gas in the interior of the frame under the for the type of protection Pressurized enclosure "p" required at least Value appropriate measures can be taken that z. B. in such a case, the energy supply to all Modules of the hydraulic unit immediately suppressed becomes.
- the features of claims 9 to 16 relate to constructive design of the frame and the supply as well the leadership of Zündschutzgases in the interior of the frame.
- FIG. 1 shows a schematic representation of a building 10, in which there is an explosive atmosphere.
- FIG. 1 shows a building 10 set up in the building 10. also shown only schematically hydraulic unit 11 according to the invention.
- the hydraulic unit 11 is of a enclosed on all sides closed frame 12.
- a motor-pump unit 15 is arranged in the interior 13 of the frame 12.
- the motor-pump unit 15 consists of an air-cooled Electric motor 16 and one of the electric motor 16th driven pump 17.
- the pump 17 delivers hydraulic Pressure fluid from a reservoir 20 via hydraulic Lines 21, 22, 23 to a not shown in the figure 1 hydraulic consumer who is outside the Frame 12 is located.
- the consumer may be z. B. to act a hydraulic cylinder or a hydraulic motor. From the consumer flows through the pressure medium via another line 25 back to the reservoir 20.
- a in the interior 13th arranged valve 27 controls the consumer supplied Amount of pressure medium.
- An outside of the building 10 arranged fan 30 leads to the interior 13 of the frame 12 serving as protective gas ambient air.
- the protective gas is supplied to the inner space 13 via a supply channel 31.
- the frame 12 is provided with a connecting piece 32 for the supply channel 31. In the region of the connecting piece 32 of the supply channel 31 is in a arranged in the interior 13 intake passage 33 via.
- the intake passage 33 divides the air flow Q i supplied from the blower 30 into two partial flows Q 1 and Q 2 .
- the partial flow Q 1 is fed to a frontal cooling air inlet 36 of the electric motor 16, while the partial flow Q 2 flows through the inner space 13.
- the frame 12 is provided with a valve assembly 38 through which the protective gas exits the interior.
- the valve assembly 38 is arranged in the frame 12, that the entire inner space 13 is flowed through by the protective gas. Details of the valve assembly 38 are described below with reference to FIG 2.
- the air flow exiting the interior 13 via the valve arrangement 38 is designated by Q o . It is practically equal to the supplied air flow Q i , apart from any leakage.
- two pressure sensors 40, 41 are arranged, which detect the pressure of the protective gas, which is also referred to as the barrier pressure p sp .
- the output signals of the pressure sensors 40, 41 are supplied to an electrical circuit 43, which evaluates the output signals of the pressure sensors 40, 41 and forms a first switching signal when the pressure p sp falls below a minimum value p min , which for a proper function of the type of protection overpressure enclosure "p " is required.
- This pressure is on the order of 1 mbar.
- the pressure p sp is detected redundantly for security reasons.
- the circuit arrangement 43 shuts off the supply of electrical energy to the assemblies arranged in the interior 13, in particular the motor 16.
- the circuit arrangement 43 forms a second switching signal when the pressure p sp exceeds a maximum value p max1 .
- the monitoring of the maximum value p max1 is nevertheless necessary in order not to mechanically overstress the frame 12 by the forces acting on its inner surfaces. So z. B. at a pressure p sp of 10 mbar on an area of 1 m 2, a force of 1000 N on this area.
- the maximum value p max1 therefore results from the structural design of the frame 12, with a usual safety margin being taken into account. For reasons of mechanical safety must be provided for an effective limitation of the maximum value of the pressure p sp in the interior 13.
- the valve arrangement 38 and the circuit arrangement 43 which evaluates the output signals of the pressure sensors 40, 41, are provided.
- the valve arrangement 38 is dimensioned such that even under unfavorable operating conditions it limits the pressure p sp to a value p max0 which is smaller than the maximum value p max1 determined by the construction of the frame 12. If, in the event of a fault, the valve arrangement is no longer able to limit the pressure p sp to the value p max0 and the pressure p sp has increased so much that it exceeds the permissible maximum value p max1 , the circuit arrangement 43 forms a corresponding switching signal which either signals only a fault or z. B. via an electrical line 45 and a control device 46, the blower 30 is influenced in terms of a safe operating condition.
- FIGS 2 and 3 show a second formed according to the invention hydraulic unit 50 with a rectangular frame 51. Components that match those of the hydraulic unit 11 shown in Figure 1, are provided with the same reference numerals.
- FIG. 2 shows a side view corresponding to the illustration in FIG. 1, while FIG. 3 shows a plan view of the hydraulic unit 50.
- To a bottom plate 52 eight perpendicular plates 54 to 61 are welded, which form a three areas 63 to 65 existing reservoir 66 with U-shaped cross-section.
- the reservoir 66 is closed at its top by further, horizontally arranged sheets which are welded to the vertical sheets 54 to 61.
- the areas 63 to 65 form three fixed side walls of the cuboid frame 51, wherein the plates 58, 59 and 60 together with the bottom plate 52 define the interior 13 of the frame 51.
- the fourth side wall of the frame 51 forms a removable wall 68 inserted between the areas 63 and 65.
- the frame 51 is closed by another removable wall 69.
- the leakage losses arising in this way may only be so great that the minimum value p min required in the interior 13 for the type of protection overpressure "p" can still be set.
- the walls 68 and 69 can, if necessary, for.
- the valve assembly 38 is disposed in an outlet opening 71 in the wall 69.
- the valve arrangement 38 is designed as a flutter valve.
- a rotatably mounted about a horizontal axis 72 plate 73, which serves as a valve blade of the flutter valve closes in its rest position due to their weight, the outlet port 71.
- Increases the pressure p sp in the interior 13 the plate 73 rotates according to the force acting on it about the axis 72 and releases the outlet port 71 until the pressure p sp is equal to the weight of the plate 73 divided by the pressure applied by the pressure p sp surface of the plate 73.
- the opening angle of the plate 73 determines the size of the outlet cross section of the outlet opening 71.
- the outlet opening 71 and the plate 73 are dimensioned so that adjusts the balance of power for the value p max0 .
- a grille 75 surrounds the pivoting area of the plate 73 and prevents foreign matter from entering the valve assembly 38 and affecting the function of the valve assembly 38.
- the electric motor 16 is held on the bottom plate 52 with four damping elements, of which only two damping elements 77, 78 are visible in FIG.
- the connecting piece 32 in the region of the supply channel 31 merges into the intake passage 33, is held on the wall 69.
- the intake passage 33 is in an advantageous manner - as well as the connecting piece 32 - held on the wall 69.
- the intake passage 33 is provided with a series of openings which distribute the supplied air flow Q i so that the first partial flow Q 1 is supplied to the cooling air inlet 36 of the electric motor 16 and that the second partial flow Q 2 into a plurality of partial flows Q 21 , Q 22 , Q 23 is divided, which flow through the interior 13 and then leave together with the exiting from the electric motor 16 partial flow Q 1, the interior 13 via the valve assembly 38.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Braking Systems And Boosters (AREA)
Abstract
Description
- Figur 1
- eine schematische Darstellung eines in einem Gebäude aufgestellten ersten erfindungsgemäßen Hydraulikaggregats,
- Figur 2
- eine Seitenansicht eines weiteren erfindungsgemäßen Hydraulikaggregats und
- Figur 3
- eine Draufsicht auf das in der Figur 2 dargestellte Hydraulikaggregat.
Claims (16)
- Hydraulikaggregat mit einem Vorratsbehälter für Hydraulik-Flüssigkeit und mit einer aus einem Motor und einer von diesem angetriebenen Pumpe gebildeten Motor-Pumpe-Einheit, gekennzeichnet durch die Kombination der folgenden Merkmale:die Motor-Pumpe-Einheit (15) ist im Innenraum (13) eines allseitig geschlossenen Rahmens (12; 51) angeordnet,dem Innenraum (13) ist ständig ein nicht zündfähiges Gas (Zündschutzgas) zugeführt,das Zündschutzgas ist im Innenraum (13) derart geführt, daß alle dort angeordneten Baugruppen (15, 27, 40, 41, 43) von ihm umströmt sind,die Menge (Qi) des dem Innenraum (13) zugeführten Zündschutzgases ist mindestens so groß gewählt, daß im Innenraum (13) ein leichter Überdruck gegenüber dem Atmosphärendruck außerhalb des Rahmens (12; 51) herrscht.
- Hydraulikaggregat nach Anspruch 1, dadurch gekennzeichnet, daß Mittel (38) zur Begrenzung des Drucks (psp) im Innenraum (13) auf einen vorgebbaren Wert (pmax0) vorgesehen sind.
- Hydraulikaggregat nach Anspruch 2, dadurch gekennzeichnet, daß eine Wand (69) des Rahmens (12; 51) mit einer Auslaßöffnung (71) versehen ist, daß die Auslaßöffnung (71) durch eine druckgesteuerte Ventilanordnung (38) verschließbar ist und daß die Ventilanordnung (38) so ausgebildet ist, daß sie den Auslaßquerschnitt vergrößert, wenn der Druck (psp) im Innenraum (13) den vorgebbaren Wert (pmax0) überschreitet.
- Hydraulikaggregat nach Anspruch 3, dadurch gekennzeichnet, daß die Ventilanordnung (38) als Flatterventil mit einem Ventilblatt in Form einer drehbar gelagerten Platte (73) ausgebildet ist.
- Hydraulikaggregat nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Ausgangssignal (up1) eines Drucksensors (40) einer elektrischen Schaltungsanordnung (43) zugeführt ist, die das Ausgangssignal auswertet und beim Unterschreiten eines ersten Drucks (pmin) im Innenraum (13) und/oder beim Überschreiten eines zweiten Drucks (pmax1) ein entsprechendes Signal bildet.
- Hydraulikaggregat nach Anspruch 5, dadurch gekennzeichnet, daß das Ausgangssignal eines zweiten im Innenraum (13) angeordneten Drucksensors (41) der elektrischen Schaltungsanordnung (43) zugeführt ist, daß die Schaltungsanordnung (43) das Ausgangssignal auswertet und beim Unterschreiten des ersten Drucks (pmin) ein entsprechendes Signal bildet.
- Hydraulikaggregat nach Anspruch 5 oder Anspruch 6, dadurch gekennzeichnet, daß die Schaltungsanordnung (43) im Gefahrenfall die Zufuhr elektrischer Energie zu den im Innenraum (13) angeordneten Baugruppen abschaltet.
- Hydraulikaggregat nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß die Schaltungsanordnung (43) ein die Zufuhr des Zündschutzgases steuerndes Signal bildet.
- Hydraulikaggregat nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Rahmen (51) quaderförmig ausgebildet ist, daß der Vorratsbehälter (66) an einer Bodenplatte (52) gehalten ist und daß der Vorratsbehälter (66) so ausgebildet ist, daß er mindestens zwei Seitenwände (63, 64, 65) des Rahmens (51) bildet.
- Hydraulikaggregat nach Anspruch 9, dadurch gekennzeichnet, daß die weiteren Wände (68, 69) des Rahmens (51) als in diesen einsetzbare, demontierbare Wände ausgebildet sind.
- Hydraulikaggregat nach Anspruch 10, dadurch gekennzeichnet, daß die weiteren Wände (68, 69) als Dämmwände ausgebildet sind.
- Hydraulikaggregat nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Motor (16) ein luftgekühlter Elektromotor ist und daß ein dem Kühlmittelbedarf dieses Motors (16) entsprechender Teilstrom (Q1) des Zündschutzgases dem Kühllufteintritt (36) des Motors (16) zugeführt ist.
- Hydraulikaggregat nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet, daß eine Wand (69) des Rahmens (51) mit einem Anschlußstutzen (32) für einen Zuführungskanal (31) versehen ist, über den das Zündschutzgas dem Innenraum (13') zuführbar ist.
- Hydraulikaggregat nach Anspruch 13, dadurch gekennzeichnet, daß der Zuführungskanal (31) in einen im Innenraum (13) angeordneten Ansaugkanal (33) mündet und daß der Ansaugkanal (33) so ausgebildet ist, daß ein erster Teilstrom (Q1) des Zündschutzgases dem Kühllufteintritt (36) des Motors (16) zugeführt ist und daß ein zweiter Teilstrom (Q2) den Innenraum (13) durchströmt.
- Hydraulikaggregat nach Anspruch 14, dadurch gekennzeichnet, daß der zweite Teilstrom (Q2) in mehrere Teilströme (Q21, Q22, Q23) aufgeteilt ist.
- Hydraulikaggregat nach Anspruch 14 oder Anspruch 15, dadurch gekennzeichnet, daß der Ansaugkanal (33) an einer Wand (69) des Rahmens (51) gehalten ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10341425 | 2003-09-09 | ||
| DE10341425A DE10341425A1 (de) | 2003-09-09 | 2003-09-09 | Hydraulikaggregat mit einem Vorratsbehälter für Hydraulik-Flüssigkeit und mit einer Motor-Pumpe-Einheit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1515041A1 true EP1515041A1 (de) | 2005-03-16 |
| EP1515041B1 EP1515041B1 (de) | 2009-11-25 |
Family
ID=34129701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04020525A Expired - Lifetime EP1515041B1 (de) | 2003-09-09 | 2004-08-30 | Hydraulikaggregat mit einem Vorratsbehälter für Hydraulik-Flüssigkeit und mit einer Motor-Pumpe-Einheit |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1515041B1 (de) |
| AT (1) | ATE449910T1 (de) |
| DE (2) | DE10341425A1 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004061366A1 (de) * | 2004-12-21 | 2006-07-06 | Ksb Aktiengesellschaft | Explosionsschutz für ein nichtelektrisches Gerät |
| EP2101061A1 (de) | 2008-03-15 | 2009-09-16 | Hoerbiger Automatisierungstechnik Holding GmbH | Hydromechanisches System |
| CN102639344A (zh) * | 2009-12-01 | 2012-08-15 | 罗伯特·博世有限公司 | 用于维护车辆中的冷却系统的方法和装置 |
| CN114294199A (zh) * | 2021-12-28 | 2022-04-08 | 潘世群 | 爆炸性气体环境下一体化泵站 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB153912A (en) * | 1914-11-06 | 1921-10-13 | Josef Muchka | Improvements in and relating to the storage and drawing off of highly inflammable liquids |
| US4183982A (en) * | 1977-05-09 | 1980-01-15 | Balzers Aktiengesellschaft Fur Hochvakuumtechnik Und Dunne Schichten | Fluid protective wall cover in a vapor deposition chamber |
| DE3010689A1 (de) | 1980-03-20 | 1981-09-24 | Brunn GmbH & Co KG, 5300 Bonn | Gekapseltes maschinenaggregat |
| EP0220512A1 (de) | 1985-10-08 | 1987-05-06 | Hoechst Aktiengesellschaft | Verfahren zum Betreiben von Hydraulikanlagen mit Flüssigkeiten auf der Basis von Glykolen |
| EP0424206A2 (de) | 1989-10-06 | 1991-04-24 | KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. | Explosionssicherer Druckraum |
| US5336064A (en) | 1993-12-06 | 1994-08-09 | Westinghouse Electric Corporation | Electric motor driven pump |
| DE4337131A1 (de) | 1993-02-02 | 1994-09-08 | Rexroth Mannesmann Gmbh | Hydraulikaggregat |
| US6086331A (en) | 1995-04-24 | 2000-07-11 | Svanehoj International A/S | Safety pumping system for hazardous environments using pressurized gas in a plurality of chambers |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4224659C1 (de) * | 1992-07-25 | 1993-11-11 | Knapp Mikrohydraulik Gmbh | Elektrohydraulisches Antriebssystem für Geräte zur Personen- oder Patientenlagerung |
| DE19612582A1 (de) * | 1996-03-29 | 1997-10-02 | Miag Fahrzeugbau Gmbh | Antriebseinheit für ein Fahrzeug |
-
2003
- 2003-09-09 DE DE10341425A patent/DE10341425A1/de not_active Withdrawn
-
2004
- 2004-08-30 AT AT04020525T patent/ATE449910T1/de not_active IP Right Cessation
- 2004-08-30 EP EP04020525A patent/EP1515041B1/de not_active Expired - Lifetime
- 2004-08-30 DE DE502004010413T patent/DE502004010413D1/de not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB153912A (en) * | 1914-11-06 | 1921-10-13 | Josef Muchka | Improvements in and relating to the storage and drawing off of highly inflammable liquids |
| US4183982A (en) * | 1977-05-09 | 1980-01-15 | Balzers Aktiengesellschaft Fur Hochvakuumtechnik Und Dunne Schichten | Fluid protective wall cover in a vapor deposition chamber |
| DE3010689A1 (de) | 1980-03-20 | 1981-09-24 | Brunn GmbH & Co KG, 5300 Bonn | Gekapseltes maschinenaggregat |
| EP0220512A1 (de) | 1985-10-08 | 1987-05-06 | Hoechst Aktiengesellschaft | Verfahren zum Betreiben von Hydraulikanlagen mit Flüssigkeiten auf der Basis von Glykolen |
| EP0424206A2 (de) | 1989-10-06 | 1991-04-24 | KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. | Explosionssicherer Druckraum |
| DE4337131A1 (de) | 1993-02-02 | 1994-09-08 | Rexroth Mannesmann Gmbh | Hydraulikaggregat |
| US5336064A (en) | 1993-12-06 | 1994-08-09 | Westinghouse Electric Corporation | Electric motor driven pump |
| US6086331A (en) | 1995-04-24 | 2000-07-11 | Svanehoj International A/S | Safety pumping system for hazardous environments using pressurized gas in a plurality of chambers |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004061366A1 (de) * | 2004-12-21 | 2006-07-06 | Ksb Aktiengesellschaft | Explosionsschutz für ein nichtelektrisches Gerät |
| EP1674732A3 (de) * | 2004-12-21 | 2009-05-27 | KSB Aktiengesellschaft | Explosionsschutz für ein nichtelektrisches Gerät |
| EP2101061A1 (de) | 2008-03-15 | 2009-09-16 | Hoerbiger Automatisierungstechnik Holding GmbH | Hydromechanisches System |
| DE102008014539A1 (de) | 2008-03-15 | 2009-09-17 | Hoerbiger Automatisierungstechnik Holding Gmbh | Hydromechanisches System |
| CN102639344A (zh) * | 2009-12-01 | 2012-08-15 | 罗伯特·博世有限公司 | 用于维护车辆中的冷却系统的方法和装置 |
| US8955341B2 (en) | 2009-12-01 | 2015-02-17 | Mahle Clevite Inc. | Method and equipment for servicing cooling systems in vehicles |
| CN102639344B (zh) * | 2009-12-01 | 2015-11-25 | 罗伯特·博世有限公司 | 用于维护车辆中的冷却系统的方法和装置 |
| US9863676B2 (en) | 2009-12-01 | 2018-01-09 | Mahle International Gmbh | Method and equipment for servicing cooling systems in vehicles |
| CN114294199A (zh) * | 2021-12-28 | 2022-04-08 | 潘世群 | 爆炸性气体环境下一体化泵站 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE502004010413D1 (de) | 2010-01-07 |
| EP1515041B1 (de) | 2009-11-25 |
| ATE449910T1 (de) | 2009-12-15 |
| DE10341425A1 (de) | 2005-03-31 |
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