WO1992004568A1 - Systeme de commandes pneumatiques modulaires - Google Patents

Systeme de commandes pneumatiques modulaires Download PDF

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Publication number
WO1992004568A1
WO1992004568A1 PCT/US1991/006283 US9106283W WO9204568A1 WO 1992004568 A1 WO1992004568 A1 WO 1992004568A1 US 9106283 W US9106283 W US 9106283W WO 9204568 A1 WO9204568 A1 WO 9204568A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
wall
passage
control apparatus
passages
Prior art date
Application number
PCT/US1991/006283
Other languages
English (en)
Inventor
Joseph H. Schaefer
Original Assignee
Newmatic Controls Inc.
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 Newmatic Controls Inc. filed Critical Newmatic Controls Inc.
Priority to EP91916658A priority Critical patent/EP0600879A1/fr
Publication of WO1992004568A1 publication Critical patent/WO1992004568A1/fr

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
    • 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
    • F15B13/0871—Channels for fluid
    • 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
    • F15B13/0885—Assembly of modular units using valves combined with other components
    • F15B13/0892—Valves combined with fluid components
    • 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

  • This invention relates to modular pneumatic controls, and particularly, modular units which are all of the same configuration so that they can be interconnected using the same fittings thus obviating specialized modular units and fittings as presently employed in the prior art.
  • U. S. patents 4,093,329; 4,095,863 and 4,095,864 illustrate the need for a separate manifold device on which the control devices are placed.
  • the *329 and the '864 patents show that different types of control devices or manifold units are employed in a control system
  • ⁇ . S. patent 4,245,549 describes a control device with a diaphragm stack wherein the internal functions are similar to that employed in the modular unit of this invention. However, it is not capable of interconnection in the manner hereinafter described.
  • logic modules are shown which are presented in a cascade form and are employed for controlling machines by pneumatic means.
  • Each one of the modular units has different inputs associated with it as well as requiring a different unit referred to as a connecting unit. While the prior art control units afford a means of manifolding several control units into a system, they do not afford a simplified modular control unit wherein each unit is of the same configuration and can be interconnected- to a common fluid input source.
  • a module is provided by a body member having two substantially identical wall members which are arranged opposite each other. There is a cavity in each body member with a fluid regulator means in the cavity.
  • a fluid passage extends from a first wall to an opposing second wall.
  • a first fluid input passage extends between the second wall and a third wall, and a fluid output passage extends between the first wall and the third wall, with all of the fluid passages communicating with the cavity.
  • all of the fluid passages are constructed and arranged to selec ⁇ tively receive identical fluid connection means or plug means.
  • Fluid connection means interconnect the fluid passages between the first and second walls of said modules.
  • plug means for insertion into said first fluid passage and the first fluid input passage at a second wall of one of the additional fluid modules and for insertion into the fluid output passage at the first wall of said first module.
  • additional plug and fluid connection means for selective insertion into the first fluid input and the output passages at the first, second and third walls of the modules.
  • the fluid passages are pneumatic fluid passages; the fluid regulator means is provided by a diaphragm disposed in the cavity for contact with a valve member, and the cavity receives one or more diaphragms without modification of the body member.
  • the modules are formed from cubic body members with a fluid passage extending through the body member in a linear manner, and the fluid input and output passages also communicate with the exterior of the body member through an additional connecting wall surface.
  • Fig. 1 is a diagrammatic view illustrating a typical prior art pneumatic control system.
  • Fig. 2 is a diagrammatic view illustrating the fluid control apparatus of the present invention.
  • Fig. 3 is a perspective view showing two of the modules of the present invention for interconnection.
  • Fig. 4 is a sectional view taken along line 4-4 of Fig. 3 but with the two modules in an assembled condition.
  • Fig. 5 is a view in vertical section taken along line 5-5 of Fig. 4.
  • Fig. 6 is a view in vertical section illustrating one of the modules of the present invention taken along line 6-6 of Fig. 3.
  • Fig. 7 is an assembly view of the module shown in Fig. 6.
  • Fig. 8 is a view similar to Fig. 6 illustrating an additional embodiment of the module.
  • Fig. 9 is a view in horizontal section of the module shown in Fig. 6 taken along line 9-9 of Fig. 6.
  • Fig. 10 is a top plan view of the module shown in Fig. 6 with a portion shown in cross section.
  • a typical prior art pneumatic control apparatus is shown generally at 10. It includes three modular pneumatic control devices 11, 12 and 13 which in normal practice has different geometric configurations.
  • the usual main air is supplied independently to the openings 14, 14' and 14", through the main air line 17.
  • Each of the units will have fluid input passages 15, 15' and 15" as well as output passages 16, 16' and 16".
  • regulator means which is responsive to the input signal such as through line 18 to activate the regulator means in the unit so that at a predetermined pressure level an output of air will exit from the output 16 and is transferred to the conduit 22.
  • Conduit 22 in turn is interconnected to the input opening 15' of unit 12.
  • a further signal is generated from device 12 through the output opening 16' and through the line 20.
  • the device 13 is not interconnected to the devices 11 or 12.
  • Input and output signals are conveyed by the input line 19 and output line 21 when connected to the respective input opening 15" and the output opening 16".
  • the modular fluid control apparatus of this invention which is shown generally at 30 in Fig. 2.
  • the fluid control apparatus 30 includes three identical devices 31, 32 and 33 which are of a cubic construction.
  • modular device 31 has a main air conduit 34 which extends linearly from the first side 31r to a second side 311.
  • the conduit 34 terminates in openings 34a and 34b for receiving, for example, a plug 41 and a coupling 40, respectively.
  • An L-shaped inlet passage 35 also communicates with the second side 311 through the orifice 35a and to a third side 31t by the orifice 35b.
  • An L-shaped outlet passage 36 communicates with the first side 31r through the orifice 36a and to the third side 31t by the orifice 36b.
  • the main air conduits 34, 34' and 34" are interconnected by the couplings 40 and with a main air supply indicated at 29.
  • the versatility of the devices is shown in Fig. 2 where, for example, a variety of input and output conduits 37 and 38, respectively, are connected to their respective inlet and outlet passages of the devices. Those passages which are not utilized are provided with plugs 41. In this manner and, for example, in conjunction with device 33, an input signal is provided by the inlet line 37 and an outlet signal is provided by the outlet conduit 38. This provides a parallel connection.
  • inlet conduit 37 connected to the inlet passage 35
  • outlet conduit 38 is connected to the outlet passage 36' and the outlet passage 36 and inlet passage 35' being closed by the plugs 41.
  • device 33 inlet passage 35" and outlet passage 36" communicate with an internal regulator means as does main air conduit 34".
  • Each of the units has two projecting connectors 43 and 43a which extend from opposing lower and upper back sides.
  • Each of the connectors 43 and 43a has a "T"-shaped recess 48 to receive, for example, a screw for mounting the devices to a mounting plate or board.
  • the connectors and screws When mounted, the connectors and screws will be covered by insertion into an opening such as 44" in the device 33. It will be understood that not both of the connectors need be utilized for attachment as these units are made in a symmetrical manner. To make certain that the units are assembled in the proper manner, it will be noted that there are locating pegs such as 46, 46" and 46a" (See Fig. 6).
  • peg 46" is square whereas peg 46a" is round for fitting into round and square openings at the top and bottom, respectively.
  • a typical fluid regulator means is shown inside the device 33 and 133.
  • device 33 has a cavity 50 which houses a bottom plate 52 as well as a retainer plate 53, and diaphragm plates 54 and 55 for housing diaphragms 92, 93 and 94 as well as stack plates 64 and 65. These form a diaphragm stack generally 95 which will move in the cavity 50 in response to various pressures or vacuum conditions, as is well known in the art (see, for example, U. S. patent 4,245,549).
  • a combination supply and exhaust mushroom shaped valve 56 is biased by the spring 59 positioned on the post 58 for seating against supply valve seat 57. As best seen in Fig.
  • the valve has a small diameter portion 56a for sealing against a second valve seat 81a in a spring retainer 81 which serves as an exhaust valve.
  • a spring 61 is positioned between the retainer 81 and the plate 62 to urge the diaphragm stack 95 upwardly.
  • the stack 95 including the stack plates 64 and 65 are secured to the diaphragms 92, 93 and 94 by the screw 78 and washer 79 which fit into the threaded portion 81b of the retainer 81.
  • a threaded stem 70 engages the adjustment nut 69 for this purpose and is rotatably captured in the neck 77.
  • a portion of the spring 66 is accommodated in the neck 77 of the device 33 as is the adjustment nut 69 and the threaded stem 70.
  • the turning of the threaded stem 70 by means of the slotted head 70a adjusts the tension on the spring 66, and accordingly the tension on the diaphragm stack 95.
  • the dial knob 68 is secured to the stem 70 by the screw 51. Rotation of the dial knob 68 is limited by the stop 67 riding in the groove 68a which will have a stop surface (not shown).
  • An indicator dial ring 85 is positioned adjacent the knob 68.
  • Fig. 7, 9 and 10 illustrates the interconnection of the plate members 52-55 inside the device 33. This is effected by eight screws 82 which extend through the plates as well as through the screw holes 33s in the body 47. For this purpose, there are accommodating nut wells 91 in the upper surface of the body 33b to accommodate the nuts 83 attached to the screws 82. A gasket 84 is positioned between plates 53 and 52.
  • Figs. 6 and 9 further illustrate communication in the device 33 by the input and output signals as well as the main air supply. Inlet passage 35" allows pressurized signal air to enter through passages 86 and 73 to effect a-downward movement of the diaphragm stack 95.
  • valve 56 This effects an opening of the valve 56 which in turn allows air from the main air supply in main air conduit 34" to flow through passage 89 to supply valve seat 57 and flow outwardly through passages 74 and 88 to outlet passage 36" in a manner well known for this device.
  • inlet passages 39 and 42 in the body 47 connecting with passages 87 and 90, respec ⁇ tively. These extend downwardly into the body 47 for introducing secondary and tertiary inputs to the diaphragm stack 95.
  • Central cavity portion 33C accommodates the spring 66 and the associated retainer 80 as previously explained.
  • FIG. 8 An alternative embodiment is shown generally at 133 in Fig. 8. Similar components are designated with the same numbers as referred to in conjunction with unit 33 except they are indicated in the "100 series". A difference between unit 33 and 133 is the fact that there are additional diaphragms 196 and 197 as well as plates 160, 163 and stack plates 167 and 175. This provides additional control chambers as represented by the numerals 198-202. As stated earlier, the use of the movable diaphragm stack 195 to effect a control function in the modular device 133 is well known in the art. Basically, a signal in the form of pressurized signal air such as would be introduced from inlet passage 135" and passages 186 and 173. From passage 173 it enters a control chamber such as 199.
  • a signal in the form of pressurized signal air such as would be introduced from inlet passage 135" and passages 186 and 173. From passage 173 it enters a control chamber such as 199.
  • This signal air in conjunction with other signal air introduced into other chambers such as 198 can cause a pressure differential acting across the diaphram 193.
  • This can cause diaphragm stack 195 to move downwardly and valve 156 to be moved off seat 157 to thereby allow supply air from the main air conduit 34" to be released as an output through passages 174, 188 and outlet passage 136".
  • An exhaust function is effected by output air passing through passage 174 and on diaphragm 194 to effect an upward movement on the diaphragm stack 195 with movement of valve 156 away from valve exhaust seat 181a.
  • Fig. 10 it is seen that there are crescent shaped passages 35w which extend from the top surface of device 33 to the inlet passages such as 35".
  • the preferred material for composing the bodies of the devices 31-33 is rigid molded plastic. However, other suitable materials would be die cast aluminum. Inlet and outlet conduits 37 and 38, as well as couplings 40 and plugs 41 are composed of flexible molded plastic. Other materials such as rubber could be substituted.
  • a modular pneumatic control device which is composed of a basic unit that can be interconnected in various manners so as to provide a wide variety of functions. Substantial cost savings is effected in that each cell or modular unit is the same, thus eliminating the expense of interconnecting different units at a variety of locations with interconnecting external piping. Interconnections are made with plugs and connectors which are the same to effect the variety of functions. Supplying main air to each unit is eliminated. While the modular units of this invention are particularly adaptable for use in conjunction with the control of heating or cooling of air, they are adaptable to any control function wherein fluid input and output signals are employed. This will be apparent from the fact that the internal control chamber functions can be easily changed to perform a relay, a selector, a controller or a switching function.
  • the main air conduits 34, 34' and 34" need not extend in a linear manner through the body of the device but could have a curved or circuitous path.
  • the inlet and outlet passages 35 and 36 are disposed in the same plane. They also could be displaced at different locations so as to exit from the wall surfaces at other locations. While a more efficient module is provided by the connectors 43 and the pegs 46, these could be eliminated.

Abstract

Module de fluide (33) destiné à un appareil de commande de fluides (30) comportant un diaphragme interne (95) actionné par du fluide, et permettant le raccordement de plusieurs modules (31, 32 et 33) ensemble. Chacun des modules a la même configuration et il est relié à une source d'alimentation fluide principale commune (29). Les unités modulaires sont branchées ensemble à l'aide de raccords (40) à la source de fluide principale reliée par conduites à uniquement un dispositif (33) présentant un passage de fluide interne (34, 34' et 34'') acheminant le fluide à toutes les unités modulaires. Lesdites unités modulaires peuvent être reliées en une combinaison en série ou parallèle par rapport à des fluides de signalisation. Les unités modulaires suppriment le coût de l'interconnexion de différentes unités en plusieurs endroits avec différents raccords, ainsi que l'alimentation indépendante en fluide de chaque unité.
PCT/US1991/006283 1990-09-05 1991-09-03 Systeme de commandes pneumatiques modulaires WO1992004568A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP91916658A EP0600879A1 (fr) 1990-09-05 1991-09-03 Systeme de commandes pneumatiques modulaires

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US57798190A 1990-09-05 1990-09-05
US577,981 1990-09-05

Publications (1)

Publication Number Publication Date
WO1992004568A1 true WO1992004568A1 (fr) 1992-03-19

Family

ID=24310959

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/006283 WO1992004568A1 (fr) 1990-09-05 1991-09-03 Systeme de commandes pneumatiques modulaires

Country Status (4)

Country Link
EP (1) EP0600879A1 (fr)
AU (1) AU8635791A (fr)
CA (1) CA2085747C (fr)
WO (1) WO1992004568A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0655558B1 (fr) * 1993-11-30 1998-07-08 Robert Bosch Gmbh Soupape pneumatique avec au moins deux modules fixés l'un à l'autre
WO1998039644A1 (fr) * 1997-03-03 1998-09-11 Bürkert Werke GmbH & Co. Bloc de commande modulaire pour techniques d'analyse
WO2000020784A1 (fr) * 1998-10-06 2000-04-13 Uwe Verken Ab Systeme modulaire de combinaison de soupapes pour fluides tels que de l'eau
US6378911B1 (en) * 1998-12-05 2002-04-30 Hansgrohe Ag System of sanitary fittings
GB2577296A (en) * 2018-09-20 2020-03-25 Bifold Fluidpower Ltd Flow control manifold

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3244193A (en) * 1964-02-24 1966-04-05 Gen Gas Light Co Multiple valve units

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806088A (en) * 1972-05-01 1974-04-23 Hydro Syst Inc Manifold apparatus
FR2266028B1 (fr) * 1974-04-01 1976-12-17 Telemecanique Electrique
US4093329A (en) * 1977-03-22 1978-06-06 Robertshaw Controls Company Manifolding means and system for electrical and/or pneumatic control devices and methods
US4095864A (en) * 1977-03-30 1978-06-20 Robertshaw Controls Company Modular manifolding means and system for electrical and/or pneumatic control devices and parts and methods
US4095863A (en) * 1977-03-30 1978-06-20 Robertshaw Controls Company Manifold means and system for electrical and/or pneumatic control devices and method
US4245549A (en) * 1978-09-18 1981-01-20 Robertshaw Controls Company Control device diaphragm stack and method of making the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3244193A (en) * 1964-02-24 1966-04-05 Gen Gas Light Co Multiple valve units

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0600879A4 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0655558B1 (fr) * 1993-11-30 1998-07-08 Robert Bosch Gmbh Soupape pneumatique avec au moins deux modules fixés l'un à l'autre
WO1998039644A1 (fr) * 1997-03-03 1998-09-11 Bürkert Werke GmbH & Co. Bloc de commande modulaire pour techniques d'analyse
EP0864859A1 (fr) * 1997-03-03 1998-09-16 Bürkert Werke GmbH & Co. Bloc de commande modulaire pour la technique d'analyse
US6495103B2 (en) 1997-03-03 2002-12-17 Burkert Werke Gmbh + Co. Modular analysis control block
WO2000020784A1 (fr) * 1998-10-06 2000-04-13 Uwe Verken Ab Systeme modulaire de combinaison de soupapes pour fluides tels que de l'eau
US6378911B1 (en) * 1998-12-05 2002-04-30 Hansgrohe Ag System of sanitary fittings
GB2577296A (en) * 2018-09-20 2020-03-25 Bifold Fluidpower Ltd Flow control manifold

Also Published As

Publication number Publication date
EP0600879A1 (fr) 1994-06-15
CA2085747A1 (fr) 1992-03-06
CA2085747C (fr) 1999-03-16
EP0600879A4 (fr) 1994-01-26
AU8635791A (en) 1992-03-30

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