VALVE WITH POSITION SENSOR

• US 20130206258A1
• Filed: 05/18/2011
• Published: 08/15/2013
• Est. Priority Date: 06/09/2010
• Status: Active Grant

• Current Assignee: Ksb Sas (KSB SE & Co. KGaA)
• Original Assignee: Ksb Sas (KSB SE & Co. KGaA)
• Inventors: Duboy, Dominique, Amagat, Christophe
• Granted Patent: US 8,919,375 B2
• Time in Patent Office: Days
• US Class Current: 137/553
• CPC Class Codes: E03B 7/07 Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
• CPC Class Codes: F16K 37/0033 using a permanent magnet, e.g. in combination with a reed relays
• CPC Class Codes: F16K 37/0041 for measuring valve parameters F16K37/0033 takes precedence
• CPC Class Codes: G01D 11/245 Housings for sensors
• CPC Class Codes: Y10T 137/8225 Position or extent of motion indicator
• CPC Class Codes: Y10T 137/8242 Electrical

Abstract

Valve comprising a shutter (2) rotating as one (A) with a shaft (3) and a sensor sensing the rotational position of the shaft (3), which comprises a target holder (4a) push-fitted onto the shaft (3), a plate (6) slipped onto the shaft (3), the target holder (4a) and the annular part (6a) being in one and the same plane.

Claims

1. (canceled)

2. (canceled)

3. (canceled)

4. (canceled)

5. (canceled)

6. (canceled)

7. (canceled)

8. (canceled)

9. (canceled)

10. (canceled)

11. Valves and fittings apparatus comprising:

a valve with a closure member (2) rotating in unison with a shaft (3),

an actuator (A) driving the shaft (3) in rotation, and

an annular sensor of the rotational position of the shaft (3) fitted on the shaft (3),

characterised in that

the sensor is interposed, in the longitudinal direction of the shaft (3), between the valve and the actuator (A) and has a thickness, that is, the dimension in the longitudinal direction of the shaft (3), between 1.5 and 4 mm.

12. Apparatus according to claim 11, characterised in that:

the sensor comprises;

an annular target-holder (4a) carrying a target (4) sensitive to an action at a distance and fitted on the shaft (3) in such a way as to rotate in unison therewith and to be able to be displaced in translation along the shaft (3),

a plate-holder (5) which forms the body of the sensor and the thickness of which is higher than the thickness of all the other components of the sensor,

a small plate (6) fitted on the shaft (3) by way of an annular portion (6a) without being rotationally unified therewith, this portion (6a) containing two detectors (7, 8) of the target (4), at 90°

one with respect to the other, and

the target-holder (4a) and the annular portion (6a) are in the same plane.

13. Apparatus according to claim 12, characterised in that the plate-holder (5) is gripped between the fixed plate (1a) of the valve and the actuator (A) so that the three parts are unified.

14. Apparatus according to claim 12, characterised in that the upper face of the small plate (6) is coated with a resin until it is flush with the upper face of the plate-holder (5).

15. Apparatus according to claim 14, characterised in that the small plate (6) contains a hole (16) opening into a casing (9) filled with resin arranged underneath the lower face of the small plate.

16. Apparatus according to claim 15, characterised in that the casing (9) has an opening (11a) for connection of an element for transmission of an electrical signal emitted by the printed circuits of the small plate (6).

17. Apparatus according to claim 12, characterised in that the target (4) is fixed in the target-holder (4a) by moulding resin thereon.

18. Apparatus according to claim 16, characterised in that, after introducing and polymerising of the resin in the casing (9) and until the resin is flush with the upper face of the plate-holder (5), all the components comprising the plate-holder (5) the small plate (6), the detectors (7, 8), the casing (9), a battery (12), a connector (10) and an antenna (11), are bound in a sensor assembly (CP) without any possibility to separate them.

19. Sensor comprising:

an annular target-holder (4a) carrying a target (4) sensitive to an action at a distance and fitted on the shaft (3) in such a way as to rotate in unison therewith and to be able to be displaced in translation along the shaft (3),

a plate-holder (5) which forms the body of the sensor and the thickness of which is higher than the thickness of all the other components of the sensor,

a small plate (6) fitted on the shaft (3) by way of an annular portion (6a) without being rotationally unified therewith, this portion (6a) containing two detectors (7, 8) of the target (4), at 90°

one with respect to the other, and

the target-holder (4a) and the annular portion (6a) are in the same plane.

characterised in that;

the small plate (6) contains a hole (16) opening into a casing (9) filled with resin arranged underneath the lower face of the small plate, and

the plate-holder (5) the small plate (6), the detectors (7, 8), the casing (9), a battery (12), a connector (10) and an antenna (11), are bound in a sensor assembly (CP) without any possibility to separate them.