GB2280010A - Fluid flow control valve arrangement - Google Patents
Fluid flow control valve arrangement Download PDFInfo
- Publication number
- GB2280010A GB2280010A GB9314732A GB9314732A GB2280010A GB 2280010 A GB2280010 A GB 2280010A GB 9314732 A GB9314732 A GB 9314732A GB 9314732 A GB9314732 A GB 9314732A GB 2280010 A GB2280010 A GB 2280010A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- arrangement
- control valve
- diaphragm
- control
- 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
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 claims description 12
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/38—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
- F16K31/385—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a diaphragm
- F16K31/3855—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a diaphragm the discharge being effected through the diaphragm and being blockable by a mechanically-actuated member making contact with the diaphragm
-
- 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
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/524—Mechanical actuating means with crank, eccentric, or cam with a cam
- F16K31/52408—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a lift valve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
Abstract
A fluid flow control valve arrangement comprises a control valve 6 for varying fluid flow and a diaphragm operated on/off valve 4 upstream of the valve 6. The diaphragm operated valve 4 is controlled by a pilot valve 27. The control valve 6 is actuated by rotation of a control knob 18, while the pilot valve 27 is linked to the knob 18 by a pivoted lever 30 so as to be actuated by axial movement of the knob 18. <IMAGE>
Description
Fluid Flow Control Valve Arrangements
This invention relates to fluid flow control valve arrangements and more particularly to such control valve arrangements having separate on/off and variable fluid flow control. The invention is especially applicable to such fluid flow control valve arrangements for use in showers.
At the present time, fluid flow control valves for showers having both an on/off control and a variable flow control are often constructed as two separate valves and are often provided with separate controls for effecting the on/off and variable flow control.
It is an object of the present invention to provide an improved form of fluid flow control valve having on/off and variable flow controls.
According to the present invention there is provided a fluid flow control valve arrangement comprising a rotary control valve for varying fluid flow through said valve, and a diaphragm operated control valve for controlling on/off fluid flow through said arrangement.
In a preferred arrangement according to the invention, said diaphragm operated control valve is mechanically operated.
Advantageously, an operating control will be provided which is rotatably operated for controlling said rotary control valve and is axially operated for controlling said diaphragm operated control valve, and also said rotary control valve and said diaphragm operated control valve are preferably contained within a common housing.
In one arrangement, it may be arranged that said rotary control valve comprises a frusto-conical valve member which is axially movable relative to a valve seat in response to rotary movement of an actuating member thereof for varying fluid flow between said valve member and said valve seat.
In carrying out said one arrangement, said valve seat may be constituted by a resilient "O" ring seal member through which said valve member is moved, said valve member having a plurality of surface grooves by means of which fluid flows through said valve.
It may be arranged that said valve member comprises an axially threaded bore which is in threaded engagement with a threaded shaft of said actuating member, and preferably an operating control will be provided which is common to said rotary control valve and said diaphragm operated valve, rotary movement of said operating control effecting rotary movement of said actuating member.
In another arrangement, it may be arranged that said diaphragm operated control valve comprises a valve seat, a flexible diaphragm arrangement which is movable into and out of contact with said valve seat for controlling on/off fluid flow through said valve, a pilot hole in said flexible diaphragm arrangement which extends from one side of said arrangement which constitutes at least part of a pilot chamber to the outlet side of said valve, a bleed hole in said flexible diaphragm arrangement which extends from said pilot chamber to an inlet side of said valve, and a valve operating member which is movable into and out of sealing contact with said pilot hole for causing said flexible diaphragm arrangement to be operated in response to fluid pressures in said valve.
Advantageously, said valve operating member is spring loaded into sealing contact with said pilot hole, an operating linkage being provided for moving said valve operating member out of sealing contact with said pilot hole, and preferably an operating control is provided which is common to said rotary control valve and said diaphragm valve, axial movement of said operating control effecting operational movement of said linkage.
An exemplary embodiment of the invention will now be described, reference being made to accompanying drawings, in which:
Fig. 1 is a cross-sectional view of a fluid flow control valve in accordance with the present invention, depicted in its OFF and minimum flow state;
Fig. 2 is a cross-sectional view of the control valve of Fig. 1, depicted in its ON and minimum flow state; and
Fig. 3 is a cross-sectional view of the control valve of Fig. 1, depicted in its ON and maximum flow state.
The fluid flow control valve depicted in the drawings is designed for use in shower applications requiring separate on/off and flow controls using a common knob. The control valve may have much wider application, however.
The fluid flow control valve comprises a multi-part housing 1 having a water inlet 2 which supplies water to an inlet chamber 3. Within the inlet chamber 3 is contained an on/off control valve in the form of a diaphragm operated valve 4, which controls water flow from the inlet chamber 3 to an intermediate chamber 5. Within the intermediate chamber 5 is mounted a variable flow control valve 6 which controls water flow from the intermediate chamber 5 to an outlet chamber 7, and thence to a water outlet 8.
The variable flow control valve 6 comprises a flow control member 9 which has an external surface which is frusto-conical and which is grooved or splined along its length bore. The member 9 has an axial bore through it by means of which it is mounted on a carrier member 10, and is retained thereon by a split ring 11. The carrier member 10 is provided with a central axially threaded bore 12 which engages a threaded shaft 13 of a control spindle 14 which is rotatably mounted in the housing 1. The upper part 15 of the carrier member 10 is provided with outward extending, diametrically opposed lugs 16 which engage in respective slots in the housing 1 and which prevent the carrier member 10 from rotating.When the control spindle 14 is rotated, the carrier member 10 and thus the flow control member 9 is caused to be moved axially upwards, as viewed in the drawings, relative to a resilient "0" ring seal member 17 which is fixedly mounted in the housing 1. Due to the frusto-conical shape of the flow control member 9, as it is moved upwards, the gap between it and the "0" ring seal member 17 increases, thereby increasing the fluid flow through the flow control valve 6, from the minimum flow position shown in Fig. 1 to the maximum flow position shown in Fig. 3.Because of the resilience of the "0" ring seal member 17, its shape relative to the splines on the flow control member 9 varies dependent upon the pressure of the water flowing through the valve 6, such that when the water pressure increases, the "0" ring seal member 17 is deformed to reduce the water flow through the valve 6, thereby providing a pressure compensating facility.
The control spindle 14, rotation of which controls the setting of the variable flow control valve 6, is provided with an actuator control 18 which is slidably mounted on it, which is rotatable for causing the control spindle 14 to be rotated, and which is axially displaceable for effecting mechanical operation of the diaphragm operated on/off valve 4 as will now be described.
The diaphragm operated on/off valve 4 shown in the drawings, comprises a disc shaped flexible diaphragm 20, the periphery of which is secured in the housing 1. The diaphragm 20 is movable into and out of sealing engagement with an annular valve seat 21 which is contained within the housing 1 and which is interposed between the inlet chamber 3 and the intermediate chamber 5. The diaphragm 20 is provided with a central insert 22 which is secured to it and which is provided with an extension 23 which extends into the centre of the valve seat 21, the extension 23 having a cross-shaped cross-section (see Fig. 2) to allow water to flow through it when the valve 4 is open.The insert 22, and the extension 23 thereof, is provided with a pilot hole 24 which effectively extends from one side of the diaphragm 20, which constitutes part of a pilot chamber 25, to the other side of the diaphragm 20 and into the intermediate chamber 5. The diaphragm 20 is also provided with a bleed hole 26 which extends through it between the inlet chamber 3 and the pilot chamber 25. The bleed hole 26 is arranged to be of smaller cross-section than that of the pilot hole 24 as will hereinafter be explained.
The diaphragm operated on/off valve 4, shown in the drawings, also comprises a resilient seal 27 which is mounted on a spring loaded member 28 which enables it to be moved into and out of sealing contact with the pilot hole 24 in the diaphragm insert 22. The spring loaded member 28 is mechanically coupled to one end 29 of a pivoted actuating lever 30, the other end 31 of which is provided with an enlarged portion 32 which engages an internal cam surface 33 of the actuator control 18. With the actuator control 18 in its "off" e.g.
axially lowest position, as viewed in Fig. 1, the end 29 of the actuating lever is caused to be moved to the right as viewed in the drawing, under the influence of the spring loaded member 28, to allow the resilient seal 27 to make sealing engagement with the pilot hole 24. With the actuator control in its "on" position, as viewed in Figs. 2 and 3, the end 29 of the actuating lever 30 is caused to be moved to the left as viewed in the drawings, against the influence of the spring loaded member 28, to cause the spring loaded member 28 also to be moved to the left, to move the resilient seal 27 out of sealing engagement with the pilot hole 24. The housing 1 is provided with an internal annular boss 34 which restricts the left-side movement of the diaphragm 20.
The diaphragm operated on/off control valve 4 operates as follows:
With the actuator control 18 in its axially lowest, i.e. "off" position, shown in Fig. 1, the resilient seal 27 is in sealing engagement with the pilot hole 24, and the diaphragm 20 is in contact with the valve seat 21 thereby preventing water flow from the inlet chamber 3 to the intermediate chamber 5. With the diaphragm 20 in this position, water flows through the bleed hole 26 from the inlet chamber 3 to the pilot chamber 25 so that the water pressures in the two chambers are equal.
When the actuator control 18 is moved axially to its highest, i.e. "on" position, shown in Figs. 2 and 3, the resilient seal is moved out of sealing engagement with the pilot hole 24, although the diaphragm 20 initially remains on the valve seat 21. Therefore, water is permitted to flow from the pilot chamber 25 through the pilot hole 24 to the intermediate chamber 5. Since the cross-sectional area of the pilot hole 24 is greater than that of the bleed hole 26, water flows out of the pilot chamber 25 via the pilot hole 24 faster than it can flow into it via the bleed hole 26 and thereby causes the water pressure in the pilot chamber 25 to be reduced. The pressure differential across the diaphragm 20 is therefore increased until a point is reached where it is caused to move off the valve seat 23 to allow water flow from the inlet chamber 3 to the intermediate chamber 5.The flow of water from the intermediate chamber 5 is then independently controlled by the variable flow control valve 6, as has already been described, and in response to rotary movement of the actuator control 18, to control water flow to the outlet chamber 7 and thence to the water outlet 8.
It should be appreciated that the fluid flow control valve which has been described has been given by way of example only, and although being applicable to a valve for controlling water flow to a shower, may have much wider application, i.e. to fluids other than water, and to applications other than showers. It should also be appreciated that the variable flow control valve which has been described may take any convenient form and any other mechanically operable diaphragm valve may be used. Also, although the fluid flow control valve which has been described lends itself to operation by a single control, it is envisaged that in some applications separate on/off and variable flow controls may be provided.
Claims (12)
1. A fluid flow control valve arrangement comprising a rotary control valve for varying fluid flow through said valve, and a diaphragm operated control valve for controlling on/off fluid flow through said arrangement.
2. A valve arrangement as claimed in claim 1, in which said diaphragm operated control valve is mechanically operated.
3. A valve arrangement as claimed in claim 2, comprising an operating control which is rotatably operated for controlling said rotary control valve, and is axially operated for controlling said diaphragm operated control valve.
4. A valve arrangement as claimed in any preceding claim, in which said rotary control valve and said diaphragm operated control valve are contained within a common housing.
5. A valve arrangement as claimed in any preceding claim, in which said rotary control valve comprises a frusto-conical valve member which is axially movable relative to a valve seat in response to rotary movement of an actuating member thereof for varying fluid flow between said valve member and said valve seat.
6. A valve arrangement as claimed in claim 5, in which said valve seat is constituted by a resilient "0" ring seal member through which said valve member is moved, said valve member having a plurality of surface grooves by means of which fluid flows through said valve.
7. A valve arrangement as claimed in claim 5 or claim 6, in which said valve member comprises an axially threaded bore which is in threaded engagement with a threaded shaft of said actuating member.
8. A valve arrangement as claimed in claim 7, comprising an operating control which is common to said rotary control valve and said diaphragm operated valve, rotary movement of said operating control effecting rotary movement of said actuating member.
9. A valve arrangement as claimed in any preceding claim, in which said diaphragm operated control valve comprises a valve seat, a flexible diaphragm arrangement which is movable into and out of contact with said valve seat for controlling on/off fluid flow through said valve, a pilot hole in said flexible diaphragm arrangement which extends from one side of said arrangement which constitutes at least part of a pilot chamber to the outlet side of said valve, a bleed hole in said flexible diaphragm arrangement which extends from said pilot chamber to an inlet side of said valve, and a valve operating member which is movable into and out of sealing contact with said pilot hole for causing said flexible diaphragm arrangement to be operated in response to fluid pressures in said valve.
10. A valve arrangement as claimed in claim 9, in which said valve operating member is spring loaded into sealing contact with said pilot hole, an operating linkage being provided for moving said valve operating member out of sealing contact with said pilot hole.
11. A valve arrangement as claimed in claim 10, comprising an operating control which is common to said rotary control valve and said diaphragm valve, axial movement of said operating control effecting operational movement of said linkage.
12. A fluid flow control valve arrangement substantially as hereinbefore described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9314732A GB2280010B (en) | 1993-07-16 | 1993-07-16 | Fluid flow control valve arrangements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9314732A GB2280010B (en) | 1993-07-16 | 1993-07-16 | Fluid flow control valve arrangements |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9314732D0 GB9314732D0 (en) | 1993-08-25 |
| GB2280010A true GB2280010A (en) | 1995-01-18 |
| GB2280010B GB2280010B (en) | 1997-05-28 |
Family
ID=10738923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9314732A Expired - Lifetime GB2280010B (en) | 1993-07-16 | 1993-07-16 | Fluid flow control valve arrangements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2280010B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6104935A (en) * | 1997-05-05 | 2000-08-15 | Nortel Networks Corporation | Down link beam forming architecture for heavily overlapped beam configuration |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB751546A (en) * | 1953-06-09 | 1956-06-27 | Pieter Eriks | "improvements in and relating to valves" |
| GB2257234A (en) * | 1991-07-01 | 1993-01-06 | Alumasc Ltd | Beer sparklers |
-
1993
- 1993-07-16 GB GB9314732A patent/GB2280010B/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB751546A (en) * | 1953-06-09 | 1956-06-27 | Pieter Eriks | "improvements in and relating to valves" |
| GB2257234A (en) * | 1991-07-01 | 1993-01-06 | Alumasc Ltd | Beer sparklers |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6104935A (en) * | 1997-05-05 | 2000-08-15 | Nortel Networks Corporation | Down link beam forming architecture for heavily overlapped beam configuration |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9314732D0 (en) | 1993-08-25 |
| GB2280010B (en) | 1997-05-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PE20 | Patent expired after termination of 20 years |
Expiry date: 20130715 |