GB2108640A - Control apparatus - Google Patents

Control apparatus Download PDF

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Publication number
GB2108640A
GB2108640A GB08231376A GB8231376A GB2108640A GB 2108640 A GB2108640 A GB 2108640A GB 08231376 A GB08231376 A GB 08231376A GB 8231376 A GB8231376 A GB 8231376A GB 2108640 A GB2108640 A GB 2108640A
Authority
GB
United Kingdom
Prior art keywords
pressure
rotary disc
guide piece
control apparatus
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.)
Granted
Application number
GB08231376A
Other versions
GB2108640B (en
Inventor
Hans Walter Aab
Hans-Joachim Schmidt
Ulrich Zillgitt
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 GB2108640A publication Critical patent/GB2108640A/en
Application granted granted Critical
Publication of GB2108640B publication Critical patent/GB2108640B/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
    • F16K11/076—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with sealing faces shaped as surfaces of solids of revolution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/1223—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being acted upon by the circulating fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0008—Mechanical means
    • F16K37/0016—Mechanical means having a graduated scale
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
    • G05D16/107—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger with a spring-loaded piston in combination with a spring-loaded slideable obturator that move together over range of motion during normal operation

Abstract

A control apparatus consists of a pressure regulator and a distributor which has a fixed guide piece (43) and a rotary disc (44) co-operating therewith. A supply duct (15) issues into the guide piece (43) and four outlet ducts (45-48) leave the guide piece, by means of which the control pressure can be supplied to various loads. These outlets are controllable individually, in groups or altogether by a selector wheel (54) (Figure 2, not shown). Pressure in chamber 26 moves a piston 20 against the force of a spring 33 to move a valve member 23 between seats 21 and 14 to regulate the delivered pressure. An adjustment ring 30 having knurling 31 is provided to change the spring 33 pressure. <IMAGE>

Description

SPECIFICATION Control apparatus State of the Art The invention relates to a control apparatus according to the preamble to the main claim. Such a control apparatus is already known from German OS 29 08 097 in which the control pressure from the pressure exchange chamber can be delivered to a load through an outlet duct. If a plurality of loads are to be controlled, then a modulator must be associated with each load as is proposed, for example, in German OS 29 26 552.
Advantages of the Invention With the control apparatus according to the invention, a distribution function is associated with the modulator and for this purpose only a few individual parts are necessary which make a compact construction of the control apparatus possible.
Advantageous further developments of the invention are described in the sub claims. With the form of control apparatus according to claim 2 and especially according to claim 3 a simple construction of the control apparatus is produced.
With claim 5, the pressure modulation is associated with the distribution function by simple means.
An embodiment of the invention is illustrated in the drawing and is explained in detail in the following description. Figure 1 shows a control apparatus according to the section 1-1 in Figure 2 to a normal scale; Figure 2 shows a longitudinal section of the control apparatus, partly broken away, to a normal scale; and Figure 3 is a plan view of the control apparatus to a normal scale.
Description of the Embodiment The control apparatus in Figures 1 to 3 is a combination of a modulator, which varies the pressure in an over pressure source 1 7 steplessly to form a variable control pressure, and a distributor which delivers the control pressure to a plurality of loads in a predetermined manner. The modulator is similar to that described in Patent Application P 29 08 097 and the distributor consists essentially of a stationary guide piece 43 and a rotary disc 44 co-operating therewith.
A piston 20 is axially guided in the guide piece 43 and has two diametrally opposite cam tracks 32 having a slope varying in the direction of the axis 1 9 and moreover a tubular inner valve seat 21 with a duct 28, both of which are arranged coaxially with respect to the axis 1 9. An adjustment ring 30 rotatable about the axis 1 9 has a setting screw 35 and two diametrally opposite axially directed siots 25 wherein an actuating edge 31 of the adjusting ring 30 projects out of the housing 42. A leaf spring 33 is urged against both cam tracks 32 by the setting screw 35.
The guide piece 43 forms a tubular outer valve seat 1 4 which is arranged coaxially with respect to the axis 1 9 and together with the inner valve seat 21 and a valve closure member 23 forms a double seat valve. A spring 22 supported by the cover 40 urges the valve closure member 23 towards both valve seats 14, 21. A supply duct 1 5 and four outlet ducts 45 48 are arranged in the guide piece 43 wherein the ducts 45, 47, 48 issue into an arcuate sector 49 of the guide piece 43.
A rotary disc 44 arranged coaxially with respect to the axis 1 9 has an arcuate outlet opening 50 at its periphery which co-operates with the sector 49. The rotary disc has an external gear segment 52.
The supply duct 1 5 issues into an over pressure chamber 1 3 which, in a first valve position of the double seat valve 14/21/23, is connected to a pressure exchange chamber 26; this is formed essentially by the piston 20, a guide piece 43 and the rotary disc 44. In a second valve position, the pressure exchange chamber 26 is connected to atmosphere 53.
A selector wheel 54 rotatable about an axis 56 has a switching finger 57 projecting from the housing 42 and a gear segment 55 which cooperates with the gear segment 52 on the rotary disc 44. The individual switching positions of the rotary disc 44 may be established by a detent arrangement 58 formed by a spring-loaded pawl 59 and a plurality of grooves 60 in the selector wheel 54.
The selector wheel 54 together with the switching finger 57 projects from the housing 42 of the apparatus in Figure 3 wherein a plurality of markings 61 are applied to the selector wheel 54 which indicate the particular switching positions of the rotary disc 44 (Figures 1 and 2). The markings 62 are applied to the actuating edge 31 of the adjusting ring 30 which indicate the particular set pressure in the pressure exchange chamber 26 (Figure 1). Furthermore, a light window 63 is provided, which can be illuminated and which has a symbol corresponding to the seat.
A dovetail 64 extends from the housing 42 for fixing the housing 42 to a holder or the like (not shown).
1. Control apparatus comprising a modulator for converting a rotary movement into a iongitudinal movement produced by a cam track for the pressure-dependent switching of a double seat valve consisting of an outer valve seat, an inner valve seat and a valve closure member and which takes up a closed position or in a first valve position connects a pressure chamber to a pressure exchange chamber or in a second valve position connects the pressure exchange chamber to atmosphere, and comprising a piston which has one of the valve seats and which is displaceable by the intermediate switching of a leaf spring adjustable as regards its pretension by an adjusting ring, characterised in that, a distributor is associated with the modulator and has a fixed guide piece (43) and a rotary disc (44) cooperating therewith.
2. Apparatus according to claim 1,
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (11)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Control apparatus State of the Art The invention relates to a control apparatus according to the preamble to the main claim. Such a control apparatus is already known from German OS 29 08 097 in which the control pressure from the pressure exchange chamber can be delivered to a load through an outlet duct. If a plurality of loads are to be controlled, then a modulator must be associated with each load as is proposed, for example, in German OS 29 26 552. Advantages of the Invention With the control apparatus according to the invention, a distribution function is associated with the modulator and for this purpose only a few individual parts are necessary which make a compact construction of the control apparatus possible. Advantageous further developments of the invention are described in the sub claims. With the form of control apparatus according to claim 2 and especially according to claim 3 a simple construction of the control apparatus is produced. With claim 5, the pressure modulation is associated with the distribution function by simple means. An embodiment of the invention is illustrated in the drawing and is explained in detail in the following description. Figure 1 shows a control apparatus according to the section 1-1 in Figure 2 to a normal scale; Figure 2 shows a longitudinal section of the control apparatus, partly broken away, to a normal scale; and Figure 3 is a plan view of the control apparatus to a normal scale. Description of the Embodiment The control apparatus in Figures 1 to 3 is a combination of a modulator, which varies the pressure in an over pressure source 1 7 steplessly to form a variable control pressure, and a distributor which delivers the control pressure to a plurality of loads in a predetermined manner. The modulator is similar to that described in Patent Application P 29 08 097 and the distributor consists essentially of a stationary guide piece 43 and a rotary disc 44 co-operating therewith. A piston 20 is axially guided in the guide piece 43 and has two diametrally opposite cam tracks 32 having a slope varying in the direction of the axis 1 9 and moreover a tubular inner valve seat 21 with a duct 28, both of which are arranged coaxially with respect to the axis 1 9. An adjustment ring 30 rotatable about the axis 1 9 has a setting screw 35 and two diametrally opposite axially directed siots 25 wherein an actuating edge 31 of the adjusting ring 30 projects out of the housing 42. A leaf spring 33 is urged against both cam tracks 32 by the setting screw 35. The guide piece 43 forms a tubular outer valve seat 1 4 which is arranged coaxially with respect to the axis 1 9 and together with the inner valve seat 21 and a valve closure member 23 forms a double seat valve. A spring 22 supported by the cover 40 urges the valve closure member 23 towards both valve seats 14, 21. A supply duct 1 5 and four outlet ducts 45 48 are arranged in the guide piece 43 wherein the ducts 45, 47, 48 issue into an arcuate sector 49 of the guide piece 43. A rotary disc 44 arranged coaxially with respect to the axis 1 9 has an arcuate outlet opening 50 at its periphery which co-operates with the sector 49. The rotary disc has an external gear segment 52. The supply duct 1 5 issues into an over pressure chamber 1 3 which, in a first valve position of the double seat valve 14/21/23, is connected to a pressure exchange chamber 26; this is formed essentially by the piston 20, a guide piece 43 and the rotary disc 44. In a second valve position, the pressure exchange chamber 26 is connected to atmosphere 53. A selector wheel 54 rotatable about an axis 56 has a switching finger 57 projecting from the housing 42 and a gear segment 55 which cooperates with the gear segment 52 on the rotary disc 44. The individual switching positions of the rotary disc 44 may be established by a detent arrangement 58 formed by a spring-loaded pawl 59 and a plurality of grooves 60 in the selector wheel 54. The selector wheel 54 together with the switching finger 57 projects from the housing 42 of the apparatus in Figure 3 wherein a plurality of markings 61 are applied to the selector wheel 54 which indicate the particular switching positions of the rotary disc 44 (Figures 1 and 2). The markings 62 are applied to the actuating edge 31 of the adjusting ring 30 which indicate the particular set pressure in the pressure exchange chamber 26 (Figure 1). Furthermore, a light window 63 is provided, which can be illuminated and which has a symbol corresponding to the seat. A dovetail 64 extends from the housing 42 for fixing the housing 42 to a holder or the like (not shown). CLAIMS
1. Control apparatus comprising a modulator for converting a rotary movement into a iongitudinal movement produced by a cam track for the pressure-dependent switching of a double seat valve consisting of an outer valve seat, an inner valve seat and a valve closure member and which takes up a closed position or in a first valve position connects a pressure chamber to a pressure exchange chamber or in a second valve position connects the pressure exchange chamber to atmosphere, and comprising a piston which has one of the valve seats and which is displaceable by the intermediate switching of a leaf spring adjustable as regards its pretension by an adjusting ring, characterised in that, a distributor is associated with the modulator and has a fixed guide piece (43) and a rotary disc (44) cooperating therewith.
2. Apparatus according to claim 1, characterised in that, the pressure chamber is formed as an over pressure chamber (13) supplied from an over pressure source (17).
3. Apparatus according to claim 1 or 2, characterised in that, a supply duct (15) which connects the over pressure source (17) to the over pressure chamber (13) is arranged in the guide piece (43) and that the guide piece (43) has a plurality of outlet ducts (45-48) which can be connected to the pressure exchange chamber (26) by the rotary disc (44) individually, or in groups or altogether.
4. Apparatus according to one of the preceding claims, characterised in that, the guide piece (43) forms the outer valve seat (14) and receives the rotary disc (44) and that the guide piece (43) and the piston (20) and the rotary disc (44) substantially form the pressure exchange chamber (26).
5. A distributor according to claim 3 or 4, characterised in that, the rotary disc (44) is arranged coaxially with respect to the axis (19) of the modulator and has an arcuate outlet opening (50) at its periphery and that the guide piece (43) has a sector (49) co-operating with the outlet opening (50) and from which the outlet ducts (45-48) leads outwardly and into which the supply duct (15) issues.
6. Apparatus according to one of the preceding claims, characterised in that, a selector wheel (54) provided with a gear segment (55) is connected in front of the rotary disc (44) and co-operates with a gear segment (52) on the rotary disc (44) and that a switching finger (57) is formed on the selector wheel (54) by means of which the individual positions of the rotary disc (44) can be changed.
7. Apparatus according to claim 6, characterised in that, the individual switching positions of the rotary disc (44) can be established by a detent arrangement (58).
8. Apparatus according to one of the preceding claims, characterised in that, the modulator and the distributor and the selector lever are arranged in a housing (42) preferably a multi compartment housing.
9. Apparatus according to claim 8, characterised in that, a plurality of markings (61) are applied to the selector wheel (54) and which indicate the particular switching position of the rotary disc (44).
10. Apparatus according to one of the preceding claims, characterised in that, an actuating edge (31) of the adjusting ring (30) projects from the housing (42) and has a plurality of markings which correspond to the particular control pressure set in the pressure exchange chamber (26).
11. Control apparatus substantially as herein described with reference to the accompanying drawings.
GB08231376A 1981-11-07 1982-11-03 Control apparatus Expired GB2108640B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813144247 DE3144247A1 (en) 1981-11-07 1981-11-07 CONTROL DEVICE

Publications (2)

Publication Number Publication Date
GB2108640A true GB2108640A (en) 1983-05-18
GB2108640B GB2108640B (en) 1985-07-10

Family

ID=6145841

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08231376A Expired GB2108640B (en) 1981-11-07 1982-11-03 Control apparatus

Country Status (3)

Country Link
DE (1) DE3144247A1 (en)
GB (1) GB2108640B (en)
IT (1) IT1153615B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2662520A1 (en) * 1990-05-25 1991-11-29 Daimler Benz Ag REGULATOR WITH CHARACTERISTIC CURVE AFFECTED BY HYSTERESIS.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3902137A1 (en) * 1989-01-25 1990-08-02 Daimler Benz Ag Pressure-control device for regulating units, in particular in motor vehicles
DE4016805C1 (en) * 1990-05-25 1991-08-08 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB727804A (en) * 1952-03-15 1955-04-06 Electraulic Presses Ltd Improvements in and relating to hydraulic systems and control valves therefor
DE1963665A1 (en) * 1969-12-19 1971-06-24 Bosch Gmbh Robert Information sign warning of the risk of black ice
DE2908097C2 (en) * 1979-03-02 1986-05-15 Robert Bosch Gmbh, 7000 Stuttgart Modulator, in particular for headlight leveling of motor vehicle headlights
DE2926552A1 (en) * 1979-06-30 1981-01-22 Daimler Benz Ag CHANGEABLE BACK SUPPORT FOR A BACKREST OF A MOTOR VEHICLE SEAT
DE3142833C2 (en) * 1981-10-29 1986-04-24 Daimler-Benz Ag, 7000 Stuttgart Pneumatic device for applying pressure to several controllable pressure chambers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2662520A1 (en) * 1990-05-25 1991-11-29 Daimler Benz Ag REGULATOR WITH CHARACTERISTIC CURVE AFFECTED BY HYSTERESIS.

Also Published As

Publication number Publication date
GB2108640B (en) 1985-07-10
IT8224065A0 (en) 1982-11-04
DE3144247C2 (en) 1990-11-29
DE3144247A1 (en) 1983-05-19
IT1153615B (en) 1987-01-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee