EP0104556A1 - Dispositif de commutation pour un réfrigérant pour fluides hydrauliques - Google Patents

Dispositif de commutation pour un réfrigérant pour fluides hydrauliques Download PDF

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Publication number
EP0104556A1
EP0104556A1 EP83109168A EP83109168A EP0104556A1 EP 0104556 A1 EP0104556 A1 EP 0104556A1 EP 83109168 A EP83109168 A EP 83109168A EP 83109168 A EP83109168 A EP 83109168A EP 0104556 A1 EP0104556 A1 EP 0104556A1
Authority
EP
European Patent Office
Prior art keywords
line
cooler
temperature
consumer
valve
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Withdrawn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
EP83109168A
Other languages
German (de)
English (en)
Inventor
Curtis Dale Leaf
Joseph Clyde Spencer
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.)
Deere and Co
Original Assignee
Deere and Co
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 Deere and Co filed Critical Deere and Co
Publication of EP0104556A1 publication Critical patent/EP0104556A1/fr
Withdrawn legal-status Critical Current

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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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F15B21/0427—Heating
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F15B21/0423—Cooling
    • 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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40523—Flow control characterised by the type of flow control means or valve with flow dividers
    • F15B2211/4053—Flow control characterised by the type of flow control means or valve with flow dividers using valves
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/61—Secondary circuits
    • F15B2211/611—Diverting circuits, e.g. for cooling or filtering
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/615—Filtering means
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/62—Cooling or heating means

Definitions

  • the invention relates to a circuit arrangement for a cooler for hydraulic liquids with an inlet and an outlet for the cooler and a bypass line bypassing the cooler, the outlet and bypass line with the suction side of a pump, the pressure side of the pump with a consumer and the consumer, on the other hand, is connected to the supply and bypass lines via one line each.
  • an outlet opening is provided in the bypass line, through which most of the liquid exits during a cold start, while at operating temperature most of the liquid is passed through the cooler via the supply line.
  • the object to be achieved with the invention is seen in improving the circuit arrangement, in particular in better adapting the cooling ability to the temperature parameters.
  • a temperature-dependent controlled valve is provided with respect to the direction of flow of the liquid upstream of the cooler and the bypass line, to which the line coming from the consumer is connected at one end and the supply and bypass line are connected at the other end, and that depending on the temperature of the liquid can assume at least two positions in which the line coming from the consumer is either connected to the bypass line or to the supply line.
  • the liquid is supplied to or past the cooler as a function of the temperature, and in fact the temperature-controlled valve assumes a position in cold start conditions in which all liquid is guided past the cooler, whereas at operating temperature all liquid is passed through the cooler Cooler is directed.
  • the temperature-controlled valve can assume a third position in which the line coming from the consumer is connected to the bypass line and to the supply line.
  • the valve assumes such a position if the operating temperature has not yet been reached after the start, so that part of the liquid can flow through the cooler and the remaining part of the liquid can flow through the bypass line.
  • a bypass valve for the temperature-dependent controlled valve is provided according to the invention, which is connected to the line coming from the consumer and to the bypass line.
  • the bypass valve is expediently only effective if the temperature-controlled valve connects the line coming from the consumer to the supply line.
  • a closed hydraulic circuit 11 As can be used in brakes or power steering systems in work vehicles.
  • liquid sucked in by a pump 13 is conveyed to a control valve 15 designed as a consumer. From there the liquid reaches a filter 17 and subsequently to a temperature-controlled valve 19. This can take on different operating positions, each of which depends on the degree of heat of the liquid. If the liquid is still cold, the valve 19 assumes a position in which all liquid reaches the pump 13 via a bypass line A. If the liquid is heated, the bypass valve 19 leads a part of the liquid into the bypass line A and the remaining part into a supply line B and further into a cooler 21, after which both parts return to the pump 13.
  • the valve 19 In the hot state of the liquid, the valve 19 assumes a third position in which all liquid is passed through the cooler 21 via the feed line B and then reaches the pump 13. In order to be able to assume these three operating positions, the valve 19 is provided with a heat-dependent element 30 which responds as a function of the temperature on the inlet side and, as the temperature rises, a valve slide 31 of the valve 19 against the action of a spring from the one shown in the drawing Position can move to its other two operating positions. In addition, the Valve 19 also has a bypass valve 33, via which, in the event of malfunctions, for example if the pressure in the system exceeds the capacity of the cooler 21, the liquid is passed directly into the bypass line A while partially bypassing the operating positions of the valve slide 31.
  • valve 33 is connected to the line area in front of the control slide 31 and to the bypass line via lines.
  • Valve 19 is commercially available and is, for example, from Gould Corp. or Gould Fluid Components Div. in Baldwin, Mo. 63011 in the United States with part number 7910-063.
  • the valve 19 enables a cooler with a lower flow rate but increased cooling capacity to be used, the overall dimensions being small.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Power Steering Mechanism (AREA)
EP83109168A 1982-09-28 1983-09-16 Dispositif de commutation pour un réfrigérant pour fluides hydrauliques Withdrawn EP0104556A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42558482A 1982-09-28 1982-09-28
US425584 1982-09-28

Publications (1)

Publication Number Publication Date
EP0104556A1 true EP0104556A1 (fr) 1984-04-04

Family

ID=23687178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83109168A Withdrawn EP0104556A1 (fr) 1982-09-28 1983-09-16 Dispositif de commutation pour un réfrigérant pour fluides hydrauliques

Country Status (3)

Country Link
EP (1) EP0104556A1 (fr)
JP (1) JPS5958207A (fr)
ES (1) ES8504349A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4116192A1 (de) * 1991-05-17 1992-11-19 Opel Adam Ag Servopumpe fuer eine hydraulisch wirkende servoeinrichtung eines kraftfahrzeuges
EP1080619A3 (fr) * 1999-09-02 2004-03-17 CLAAS Selbstfahrende Erntemaschinen GmbH Véhicule automobile pour travail agricole
DE20221943U1 (de) 1977-11-15 2009-09-24 OCé PRINTING SYSTEMS GMBH Gerätesystem zur Verarbeitung von Dokumentendaten

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3401605A (en) * 1966-09-13 1968-09-17 Abex Corp Temperature responsive hydraulic system and valve means therefor
GB1396778A (en) * 1972-03-28 1975-06-04 Af Hydraulics Fluid supply systems
JPS5590708A (en) * 1978-12-26 1980-07-09 Kubota Ltd Working-oil circuit of working vehicle
FR2468485A1 (fr) * 1979-10-27 1981-05-08 Kloeckner Humboldt Deutz Ag Dispositif pour echauffer le liquide sous pression destine a l'equipement hydraulique d'un vehicule automobile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3401605A (en) * 1966-09-13 1968-09-17 Abex Corp Temperature responsive hydraulic system and valve means therefor
GB1396778A (en) * 1972-03-28 1975-06-04 Af Hydraulics Fluid supply systems
JPS5590708A (en) * 1978-12-26 1980-07-09 Kubota Ltd Working-oil circuit of working vehicle
FR2468485A1 (fr) * 1979-10-27 1981-05-08 Kloeckner Humboldt Deutz Ag Dispositif pour echauffer le liquide sous pression destine a l'equipement hydraulique d'un vehicule automobile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Patent Abstracts of Japan Band 4, Nr. 136, 24. September 1980 Seite 5 M 33 & JP-A-55 090708 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20221943U1 (de) 1977-11-15 2009-09-24 OCé PRINTING SYSTEMS GMBH Gerätesystem zur Verarbeitung von Dokumentendaten
DE4116192A1 (de) * 1991-05-17 1992-11-19 Opel Adam Ag Servopumpe fuer eine hydraulisch wirkende servoeinrichtung eines kraftfahrzeuges
DE4116192C2 (de) * 1991-05-17 1998-04-09 Opel Adam Ag Servopumpe für eine hydraulisch wirkende Servoeinrichtung eines Kraftfahrzeuges
EP1080619A3 (fr) * 1999-09-02 2004-03-17 CLAAS Selbstfahrende Erntemaschinen GmbH Véhicule automobile pour travail agricole

Also Published As

Publication number Publication date
JPS5958207A (ja) 1984-04-03
ES525967A0 (es) 1984-07-16
ES8504349A1 (es) 1984-07-16

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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): DE FR GB 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: 19841205

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SPENCER, JOSEPH CLYDE

Inventor name: LEAF, CURTIS DALE