EP1042616A1 - Distributeur 4/2 pneumatique controle par impulsions - Google Patents

Distributeur 4/2 pneumatique controle par impulsions

Info

Publication number
EP1042616A1
EP1042616A1 EP99952432A EP99952432A EP1042616A1 EP 1042616 A1 EP1042616 A1 EP 1042616A1 EP 99952432 A EP99952432 A EP 99952432A EP 99952432 A EP99952432 A EP 99952432A EP 1042616 A1 EP1042616 A1 EP 1042616A1
Authority
EP
European Patent Office
Prior art keywords
valve
switching
pulse
controlled
pneumatic
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
Application number
EP99952432A
Other languages
German (de)
English (en)
Other versions
EP1042616B1 (fr
Inventor
Klaus Bergmann
Rainer Jungeilges
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 EP1042616A1 publication Critical patent/EP1042616A1/fr
Application granted granted Critical
Publication of EP1042616B1 publication Critical patent/EP1042616B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0832—Modular valves
    • F15B13/0839—Stacked plate type 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0405—Valve members; Fluid interconnections therefor for seat valves, i.e. poppet 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0821—Attachment or sealing of modular units to each other
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0878—Assembly of modular units
    • F15B13/0896—Assembly of modular units using different types or sizes of valves

Definitions

  • the invention is based on a pulse-controlled, pneumatic 4/2 way valve according to the preamble of claim 1.
  • Such directional valves which are used in particular for controlling double-acting consumers, are switched by their one switching position and their other switching position by control pulses. Between two control pulses, i.e. Without an effective control signal on the directional control valve, the existing switch position remains.
  • An impulse-controlled, pneumatic directional control valve is already known, for example, from the Bosch Pneumatics Information, Fundamentals and Device Functional Description catalog no. 1 829 929 077, page 33, edition 9/77.
  • the switching function is implemented by means of a single valve spool that is movably guided in the housing bore.
  • the valve slide controls pressure medium connections between adjacent pressure chambers and is relatively long.
  • the directional control valve therefore has a relatively large construction volume.
  • the housing bore for pressure-tight and low-friction guidance of the valve spool must be made cost-effectively with small tolerances.
  • the system-related friction of a valve spool has a negative effect on the short switching times of a directional valve.
  • a hydraulic directional control valve is known from DE 31 07 012 C2, in which two 3/2-way valves interact with one another. Both switching valves are as monostable flat seat valves.
  • this directional valve is a 4/3 directional valve with a third neutral position, in which both consumer connections for the return are relieved of pressure and the inlet connections are blocked.
  • a bistable 4/2 switching function is not feasible with this design of a directional valve.
  • an inventive pulse-controlled pneumatic 4/2 way valve m t the characterizing features of claim 1 has the advantage that it enables two bistable switching positions with an extremely compact design and short switching times. This is achieved by means of two interacting switching valves with a 3/2-way design.
  • the first switching valve is designed as a bistable slide valve, while the second switching valve is a monostable poppet valve.
  • seat valves enable particularly low-friction operation because they do not need any circumferential, friction-generating sealing elements.
  • Such a directional control valve is particularly easy to accommodate in a disk-shaped housing and is therefore particularly suitable for blocking with other directional control valves.
  • the design according to the invention can also be implemented inexpensively. Further advantages or advantageous
  • FIG. 1 shows a directional valve according to the invention in
  • Figure 2 Longitudinal section, in Figure 2, to describe the functions of the directional control valve, the switching symbols of the Emzel components are shown;
  • Figure 3 shows a circuit symbol that illustrates the operation of the directional control valve according to the invention as a structural unit.
  • the directional control valve 10 has a disk-shaped housing 11 with two switching valves 12, 13 arranged one above the other. These switching valves 12, 13 are provided with valve slides 14, 16 which are movably guided in recesses 18, 20.
  • the first recess 18 assigned to the first valve slide 14 is designed as a through-hole, the inside diameter of which is stepped down several times, the two outer end regions 18a of the through-hole each having the largest inside diameter.
  • the section of the recess 18 lying between the two end regions 18a is subdivided into a relatively long slide region 18b and a shorter guide region 18c, the inner diameter of which is smaller.
  • a plurality of support rings 22 are pressed into the slide region 18b at an axial distance from one another.
  • the slide area 18b can be reduced in diameter in order to form stop edges for these support rings 22.
  • the inner surfaces of the support rings 22 act as sealing surfaces for sealing rings 24, which are arranged on the circumference of the first valve slide 14.
  • This valve slide 14 thus, together with the support rings 22 and the wall of the through hole 18, delimits three adjacent pressure chambers 26a-c, pressure medium connections between two adjacent pressure chambers 26 being released or closed by the valve slide 14 depending on its switching position.
  • valve slide 14 is divided into two piston sections 14a and 14b and a constriction 14c, which connects the two piston sections 14a, b to one another.
  • the middle pressure chamber 26b is connected to a first working connection 34 of the directional control valve 10 via a pressure medium channel 32 which leads to the outside and of which only the orifice cross section can be seen in FIG.
  • the return 28 and the inlet 30 run perpendicular to the recess 18 and end on the two side surfaces of the disk-shaped housing 11. This can be connected to appropriately designed, adjacent housings (not shown) to form valve blocks which are connected by means of a common inlet and outlet 30 , 28 can be supplied or disposed of with pressure medium.
  • the two working connections 34, 35 of the directional control valve 10 are provided on a common end face of the housing 11. They are designed, for example, as plug connections for plastic tubes and are placed on the front side of the housing 11 facing the second switching valve 13.
  • the valve spool 14 can be moved in two switching positions, in which the first working connection 34 is coupled to either the inlet 30 or the return 28.
  • the switching process is effected, for example, by pistons 36, 37, which are guided in the end regions 18a of the recess 18 and which act on the two end faces of the valve slide 14.
  • the end regions 18a, together with the pistons 36, 37 therefore form two cylinder units acting in the opposite direction from which external pressure medium can be applied.
  • valve slide 14 can of course also be applied mechanically or electromechanically. Reset devices for the valve slide 14 are not provided, so that the respective switching position of the switching valve 12 remains even after no pressure has been applied to one of the pistons 36, 37. Accordingly, the switching valve 12 described is a bistable 3/2-way switching valve which is conventionally known per se.
  • the switching valve 12 described is pneumatically coupled to the second switching valve 13, which is designed as a monostable flat seat valve m 3/2-way construction
  • the latter is housed in the recess 20 running parallel to the recess 18, which is designed as a blind hole.
  • the blind hole is closed in a pressure-tight manner from the surroundings by means of a pressed-in plug 38.
  • Two axially spaced belt bodies 40 are pressed into the recess 20 and divide their interior, as in the case of the switching valve 12, into three adjacent pressure chambers 42a-c. Interactions between these pressure chambers 42a-c are controlled by the valve slide 16, the first end of which faces the plug 38 forms an actuating piston 43, which is delimited on the circumference by a lip sealing element 44.
  • the second end of the valve slide 16 opposite the actuating piston 43 has a support collar 46, against which a return spring 48 rests. This is supported on the base of the recess 20 and returns the second switching valve 13 m to its basic position in its pressure-relieved state.
  • a seat body 50 which is fixed on the valve slide 16, acts as the valve member of this second switching valve 13.
  • the seat body 50 forms, together with the side surfaces of one of the two body members 40, two flat seat valves 51a, b lying opposite one another.
  • Flat seat valves 51a, b of this type are distinguished by their low-friction operation and their good tightness.
  • the second switching valve 13 is pneumatically connected to the first switching valve 12 by pressure medium channels 52, 54, 56 on the housing side.
  • the first pressure medium channel 52 connects the return-side pressure chamber 26a of the first switching valve 12 with the pressure chamber 42a of the second switching valve 13, which is delimited laterally by the actuating piston 43, while the second pressure medium channel 54 from the
  • the pressure chamber 26c on the inlet side of the first switching valve 12 leads to the pressure chamber 42c of the second switching valve 13 facing away from the actuating piston 43.
  • the return spring 48 is also located in this pressure chamber 42c.
  • the middle pressure chamber 42b is connected to the second working port 35 of the directional control valve 10 and the cylinder chamber of the actuating piston 43 is connected via the third pressure channel 56 to the middle pressure chamber 26b of the first one, which acts on the first working port 34 Switching valve 12 connected in parallel.
  • the switching symbol drawn on the left in FIG. 2 represents the first switching valve 12, which is connected to the first working connection 34 and is designed as a slide valve, and the right switching symbol represents the spring-loaded second switching valve 13 controlling the second working connection 35
  • the two switching valves 12 and 13 can assume two switching positions and each have three connections, namely the inlet 30, the return 28 and the working connection 34 or 35.
  • the first switching valve 12 is external for its actuation, in particular by the pistons 36 and 37, controllable, while the second switching valve 13 is actuated by the actuating piston 43 from the pressure level at the first working connection 34 and is returned to its basic position by the return spring 48.
  • the first switching valve 12 In the drawn basic position of the directional control valve 10, which is also shown in FIG. 1, the first switching valve 12 is in a position in which the first working connection 34 is relieved to the return 28 and the inlet 30 is shut off. At the same time, the second switching valve 13 releases a pressure medium connection between the inlet 30 and the second working connection 35 and separates this second working connection 35 from the return 28.
  • the directional control valve 10 is switched over by a
  • the actuating piston 43 of the second switching valve 13 is also supplied with high pressure via the pressure medium channel 56 when the first piston 36 of the switching valve 12 has no control signal at all.
  • a changeover of the directional valve 10 in order to connect the first working connection 34 again to the return 28 and the second working connection 35 to the inlet 30 again is possible by means of a pressure pulse on the second actuating piston 37 of the first switching valve 12.
  • the switching valve 10 accordingly has two bistable switching positions.
  • the circuit symbol for the directional control valve 10 described as a structural unit is drawn in FIG. 3. Accordingly, the directional control valve 10 provides a valve with four connections - two working connections 34, 35, an inlet 30 and one
  • Return 28 - represents that can be moved by the externally controlled pistons 36 and 37 in two switching positions. In these two switching positions, the working connections 34, 35 are alternately coupled to the inlet 30 or the return 28.
  • the directional control valve 10 is reversed from the outside, for example by pressure pulses on the two actuating pistons 36, 37; Reset devices are not available, so that there are two bistable switching positions, which are retained even after the control pulses are omitted.
  • This consists in creating a directional valve 10 which is simple in construction with the most compact possible external dimensions, is inexpensive to manufacture, can be blocked and has short switching times.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Multiple-Way Valves (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

L'invention concerne un distributeur 4/2 (10) pneumatique contrôlé par impulsions, dont la configuration de soupape est composée de deux distributeurs de commande (3/2) (12, 13). Selon l'invention, le premier distributeur de commande (12) est un tiroir d'arrêt bistabile tandis que le deuxième distributeur de commande (13) un clapet à siège plat monostabile. Les faibles forces de frottement du deuxième distributeur de commande (13) permettent d'obtenir des temps de commutation particulièrement courts. Les deux distributeurs de commande (12, 13) sont juxtaposés dans un carter commun (11) qui est extrêmement compact et qui se fixe à des blocs de distribution.
EP99952432A 1998-09-09 1999-08-17 Distributeur 4/2 pneumatique controle par impulsions Expired - Lifetime EP1042616B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19841056A DE19841056A1 (de) 1998-09-09 1998-09-09 Impulsgesteuertes pneumatisches 4/2-Wegeventil
DE19841056 1998-09-09
PCT/DE1999/002580 WO2000014414A1 (fr) 1998-09-09 1999-08-17 Distributeur 4/2 pneumatique controle par impulsions

Publications (2)

Publication Number Publication Date
EP1042616A1 true EP1042616A1 (fr) 2000-10-11
EP1042616B1 EP1042616B1 (fr) 2002-11-06

Family

ID=7880268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99952432A Expired - Lifetime EP1042616B1 (fr) 1998-09-09 1999-08-17 Distributeur 4/2 pneumatique controle par impulsions

Country Status (5)

Country Link
EP (1) EP1042616B1 (fr)
JP (1) JP2002524697A (fr)
DE (2) DE19841056A1 (fr)
HU (1) HU224252B1 (fr)
WO (1) WO2000014414A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110522982A (zh) * 2019-09-26 2019-12-03 泰州市久信医疗科技有限公司 一种单输入双输出气体流量调节装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10301119C5 (de) 2003-01-14 2018-04-05 Wabco Gmbh Luftfederungssystem
CN101915183A (zh) * 2010-07-01 2010-12-15 北京航空航天大学 双工况阶跃式流量控制阀及控制结构设计方法
CN108488125B (zh) * 2018-03-21 2019-12-17 洛阳世英机械制造有限公司 一种多功能手电一体旋转式控制阀

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1012961A (en) * 1963-10-28 1965-12-15 Hamilton Controllers Ltd Improvements in pneumatic control valves
DE2510151A1 (de) * 1975-03-08 1976-09-09 Knorr Bremse Gmbh 4/2-wege-steuerventil
FR2328147A1 (fr) * 1975-10-17 1977-05-13 Reolon Noe Distributeur a trois voies pour fluide de commande
DE3107012A1 (de) * 1981-02-25 1982-11-04 Bochumer Eisenhütte Heintzmann GmbH & Co, 4630 Bochum Schieberventil fuer oel-in-wasser-emulsionen
DE3216809A1 (de) * 1982-05-05 1983-11-10 Robert Bosch Gmbh, 7000 Stuttgart Wegeventil, das fuer unterschiedliche betriebsarten vorgesehen ist
DE4400760C2 (de) * 1994-01-13 1997-03-27 Festo Kg Mehrwegeventil
DE19649833A1 (de) * 1996-12-02 1998-06-04 Bosch Gmbh Robert Elektrohydraulische Steuervorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0014414A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110522982A (zh) * 2019-09-26 2019-12-03 泰州市久信医疗科技有限公司 一种单输入双输出气体流量调节装置
CN110522982B (zh) * 2019-09-26 2024-02-20 泰州市久信医疗科技有限公司 一种单输入双输出气体流量调节装置

Also Published As

Publication number Publication date
EP1042616B1 (fr) 2002-11-06
HUP0100339A3 (en) 2001-11-28
HU224252B1 (hu) 2005-07-28
JP2002524697A (ja) 2002-08-06
DE19841056A1 (de) 2000-03-23
HUP0100339A2 (hu) 2001-06-28
WO2000014414A1 (fr) 2000-03-16
DE59903313D1 (de) 2002-12-12

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