EP0074333A1 - Moteur hydraulique pour le piston de travail d'une machine à café - Google Patents

Moteur hydraulique pour le piston de travail d'une machine à café Download PDF

Info

Publication number
EP0074333A1
EP0074333A1 EP82810350A EP82810350A EP0074333A1 EP 0074333 A1 EP0074333 A1 EP 0074333A1 EP 82810350 A EP82810350 A EP 82810350A EP 82810350 A EP82810350 A EP 82810350A EP 0074333 A1 EP0074333 A1 EP 0074333A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
network
working piston
water
coffee machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP82810350A
Other languages
German (de)
English (en)
Inventor
Arnold Rais
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.)
Schaerer AG
Original Assignee
Schaerer AG
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 Schaerer AG filed Critical Schaerer AG
Publication of EP0074333A1 publication Critical patent/EP0074333A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/27—Directional control by means of the pressure source
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/77—Control of direction of movement of the output member

Definitions

  • the present invention relates to a hydraulic drive for the drive piston of a coffee machine which is axially movable within a cylinder, the cylinder of which is intended for connection to a water distribution network, with a control head which divides the cylinder into two cylinder spaces.
  • the common hydraulic drives of this type have the disadvantage that the water used to move the working cylinder from the water distribution network after being used to displace the working piston during its counter-movement was expelled from the cylinder and fed to an outlet. In other words, the control water was lost after control of the working piston, which led to excessive water consumption by such equipped coffee machines.
  • the invention had for its object to provide a drive of the type mentioned, the water consumption of which is extremely small, in that the control water is fed back to the distribution network after each control process.
  • one cylinder space is connected to the pressure side of a pump connecting the suction side to the network, and the other cylinder space is provided with means for connection to the network.
  • 1 denotes the control part of the cylinder for the working piston 2 of a coffee machine, not shown.
  • the piston 2 has a collar projecting outwards and designed as a control head 3, the outside diameter of which is a little smaller than the inside diameter of the control part 1.
  • sealing means are also arranged on the outside of the control head, so that the two cylinder spaces 4 and 4 formed by the control head 3 5 to be sealed off from each other.
  • the cylinder space 4 is delimited by the end plate 6 of the control part 1, the projections 7 arranged on this plate ensuring that the working piston 2, which is moved completely to the right in the drawing, does not immediately face the end of its control head 3 bar abuts the inside of the end plate 6.
  • This last is further broken through by the bore 8, which serves on its outside to connect to the line 9, which connects to the drinking water network 11 via the valve 10 and the connection to the pressure part of the pump 13 via the branch 12.
  • the suction part of the pump is in turn connected to the network 11.
  • the line 9 would connect the cylinder chamber 4 to a liquid source of any kind.
  • the cylinder chamber 5 has on its left-hand side in FIG. 1 an annular shoulder 14 and projections 15, which last serve to prevent the control head 3 in its extreme position on the left in the drawing from resting directly on the shoulder 14.
  • the bore 16 is provided which connects the cylinder chamber 5 on the one hand via the further valve 17 to the pressure side of the pump 13 and on the other hand via the line 18 and the valve 19 to the network.
  • the mode of operation of the exemplary embodiment of the hydraulic drive described is as follows: If the piston 2 is to be moved from the center position shown in the drawing to the left in the drawing, it is sufficient to open the valves 10 and 19 when the pump 13 is at a standstill. The consequence of this is that water from the drinking water network 11 which is under network pressure (approx.
  • the working piston 2 located in its left extreme position is to be moved to the right in the drawing, then it is sufficient to open the valve 17 and to close the valve 19, and finally to start the pump 13, which water from the network 11 through the valve 17 and the bore 16 in the cylinder chamber 5, wherein the pressure generated by the pump 13 must be greater than the network pressure.
  • the delivery pressure of the pump 13 must of course be selected such that the working piston 2 is moved to the right in the drawing by the pressurized water contained in the cylinder chamber 5, although the surface area of the water in the cylinder chamber 5 is considerably smaller than in the cylinder chamber 4. Also in this cylinder Movement in which the valve is open, the squeezed water is returned to the network from the cylinder space 4, so that it is not lost but can be used for further use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
EP82810350A 1981-08-25 1982-08-24 Moteur hydraulique pour le piston de travail d'une machine à café Withdrawn EP0074333A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5479/81 1981-08-25
CH547981 1981-08-25

Publications (1)

Publication Number Publication Date
EP0074333A1 true EP0074333A1 (fr) 1983-03-16

Family

ID=4294278

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82810350A Withdrawn EP0074333A1 (fr) 1981-08-25 1982-08-24 Moteur hydraulique pour le piston de travail d'une machine à café

Country Status (2)

Country Link
EP (1) EP0074333A1 (fr)
JP (1) JPS5846205A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101145176B1 (ko) * 2011-06-16 2012-05-14 아주대학교산학협력단 일산화탄소/올레핀 공중합 촉매 및 이를 이용한 현탁 중합

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06818B2 (ja) * 1984-06-14 1994-01-05 三菱化成株式会社 オレフイン共重合体の製造方法
CN111779719A (zh) * 2019-04-04 2020-10-16 广东美的生活电器制造有限公司 液压锁紧系统和饮品机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT509257A (fr) *
US2392471A (en) * 1942-02-11 1946-01-08 Vickers Inc Power transmission
FR1270599A (fr) * 1960-07-19 1961-09-01 Perfectionnements aux dispositifs hydrauliques à effets multiples
FR2397815A1 (fr) * 1977-07-18 1979-02-16 Levi Mario Ensemble operatoire entierement automatique pour l'infusion de doses de cafes express ou autres boissons similaires

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT509257A (fr) *
US2392471A (en) * 1942-02-11 1946-01-08 Vickers Inc Power transmission
FR1270599A (fr) * 1960-07-19 1961-09-01 Perfectionnements aux dispositifs hydrauliques à effets multiples
FR2397815A1 (fr) * 1977-07-18 1979-02-16 Levi Mario Ensemble operatoire entierement automatique pour l'infusion de doses de cafes express ou autres boissons similaires

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101145176B1 (ko) * 2011-06-16 2012-05-14 아주대학교산학협력단 일산화탄소/올레핀 공중합 촉매 및 이를 이용한 현탁 중합

Also Published As

Publication number Publication date
JPS5846205A (ja) 1983-03-17

Similar Documents

Publication Publication Date Title
DE10249523A1 (de) Druckverstärker
DE2129322A1 (de) Einrichtung zum Synchronisieren einer Mehrzahl von hydraulischen Kolbenkrafttrieben
DE3048776A1 (de) Druckwandlergeraet
DE2436942A1 (de) Steuervorrichtung fuer eine hydraulische spannvorrichtung
DE2338267B2 (de) Zweistufiger pneumatisch-hydraulischer Druckwandler
DE1484641C3 (de) Hydraulisches Steuersystem für ein Schürfkübelfahrzeug
DE3115076A1 (de) Pneumatisch-hydraulische anordnung fuer hydraulisches stellglied
EP0074333A1 (fr) Moteur hydraulique pour le piston de travail d'une machine à café
DE1295383B (de) Sicherheitseinrichtung fuer das Steuersystem eines hydraulischen Motors mit zwei synchron zu betaetigenden Hauptventilen und einem Fuehlerventil
DE1453500A1 (de) Hydraulisch betaetigte Kolbenpumpe
DE2943642A1 (de) Vorrichtung zum steuern eines einfach wirkenden arbeitszylinders, insbesondere eines pressenarbeitszylinders
DE2038661B2 (de) Hydraulische Ausbausteuerung
DE1500429C3 (de) Nachfulleinnchtung zum Ausgleich von Leckolverlusten in einem pneuma tisch hydraulischen Druckübersetzer fur Pressen oder dgl
DE909295C (de) Steuerung fuer Arbeitskolben von hydraulischen Pressen, Fahrzeughebern od. dgl.
DE60114347T2 (de) Holzspaltgerät mit einer Differentialschaltung eines einfach-wirkenden hydraulischen Zylinder
DE1917026C3 (de) Steuereinrichtung für einen druckluftbeaufschlagten Antriebskolben
DE1752745A1 (de) Vorrichtung zum Tiefziehen von nahtlosen,einendig geschlossenen Behaeltern
DE880837C (de) Hydraulische Beistellung des Werkzeuges von Werkzeugmaschinen, insbesondere Fraesmaschinen
DE549789C (de) Steuerung fuer Unterdruckpressen mit getrennten Vorschub- und Arbeitszylindern und direktem Pumpenantrieb
DE2142698C3 (de) Sicherheitsschaltung, insbesondere für hydraulische Pressen
DE1054328B (de) Membranpumpe mit selbsttaetiger Vorlagesteuerung
DE6807631U (de) Vorrichtung zum zufuehren von druckfluessigkeit zu einem umlaufenden, doppeltwirkenden hydraulikzylinder
DE648621C (de) Durch Druckluft angetriebene, in zwei Druckstufen fuer Leer- und Arbeitshub und mit einem fluessigkeitsgesteuerten Presszylinder arbeitende hydraulische Presse mit selbsttaetiger Umsteuerung von Niederdruck auf Hochdruck
DE3235954A1 (de) Vorrichtung zum steuern eines werkzeugmaschinenschlittens
DE825951C (de) Zweistufiges Pumpenaggregat, insbesondere fuer hydraulische Pressen

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

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840222

RIN1 Information on inventor provided before grant (corrected)

Inventor name: RAIS, ARNOLD