Sanitary change-over valve and assembly comprising a change-over valve of this type

Patent metadata

Field	Value
Publication number	US-10465805-B2
Application number	US-201615548968-A
Country	US
Kind code	B2
Filing date	Mar 9, 2016
Priority date	Mar 9, 2015
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

The invention relates to a sanitary change-over valve ( 1 ) having a valve housing ( 2 ) which has one valve inlet ( 3 ) and two selectively actuatable valve outlets ( 4, 5 ), having a valve piston ( 6 ) which is movable from a first switch-over position in which the fluid is guided by way of a flow path that is routed through a first valve outlet ( 4 ) to a second switch-over position in which the fluid is guided by way of a flow path that is routed by way of a second valve outlet ( 5 ) as soon as that portion of the second flow path that is routed beyond the change-over valve ( 1 ) has been released, wherein the valve piston ( 6 ) is configured as a hollow body through which the fluid in the course of at least one of the flow paths is routed by way of at least one piston inlet ( 9 ) that is disposed on the piston circumference. The change-over valve according to the invention is characterized in that the fluid that is routed by way of the at least one piston inlet ( 9 ) in the course of the second flow path is routed by way of a first piston outlet that is provided on that piston end side that faces away from the piston base ( 10 ), and in that a flow throttle ( 12 ), a flow regulator ( 11 ), or a return flow preventer is provided in the first piston outlet.

First claim

The invention claimed is:

1. A sanitary change-over valve ( 1 ) comprising a valve housing ( 2 ) which has one valve inlet ( 3 ) and first and second selectively actuatable valve outlets ( 4 , 5 ), a valve piston ( 6 ) which is movable from a first switch-over position in which fluid is guided by a first flow path routed through the first valve outlet ( 4 ) to a second switch-over position in which the fluid is guided by a second flow path routed to the second valve outlet ( 5 ) as soon as a portion of the second flow path that is routed beyond the change-over valve ( 1 ) has been released, the valve piston ( 6 ) is configured as a hollow body through which the fluid in the course of at least one of the flow paths is routed by at least one piston inlet ( 9 ) that is disposed on a piston circumference, the fluid that is routed by the at least one piston inlet ( 9 ) in the course of the second flow path is routed by a first piston outlet that is provided on a piston end side that faces away from a piston base ( 10 ), and a flow throttle ( 12 ), a flow regulator ( 11 ), or a return flow preventer is provided in the first piston outlet, wherein the flow throttle ( 12 ), the flow regulator ( 11 ), or the return flow preventer is configured as an insert cartridge, and a cartridge receptacle ( 13 ) is provided in an interior of the hollow-body of the valve piston ( 6 ), an insert opening of said cartridge receptacle ( 13 ) being disposed on the piston end side of the valve piston that faces away from the piston base.

2. The sanitary change-over valve as claimed in claim 1 , wherein the valve piston ( 6 ) on the piston end side thereof that faces away from the piston base ( 10 ) has an external circumference that is larger than an external circumference of the piston base ( 10 ).

3. The sanitary change-over valve as claimed in claim 1 , wherein the valve piston ( 6 ) on a front end region thereof that faces away from the piston base ( 10 ) on a side of an external circumference has at least one first annular seal which is configured as an encircling lip seal ( 14 ), said lip seal ( 14 ) having at least one sealing lip ( 15 ) which is disposed obliquely to a sliding path of the valve piston ( 6 ) in such a manner that a free lip end of the at least one sealing lip ( 15 ) points in a direction that faces away from the piston base ( 10 ).

4. The sanitary change-over valve as claimed in claim 1 , wherein the valve piston ( 6 ) on a front end region thereof that faces away from the piston base on a side of an external circumference has a first annular seal that is designed as an O-ring ( 40 ) which ( 40 ) under a pressure of a flow of incident fluid in the second switch-over position is adapted to deform in such a manner that said annular seal seals an annular gap between the external circumference of the valve piston ( 6 ) and an internal circumference of the valve housing ( 2 ).

5. The sanitary change-over valve as claimed in claim 4 , wherein the valve piston ( 6 ) on the front end region thereof that faces the piston base ( 10 ) on a side of the external circumference has at least one second annular seal ( 16 ) that projects beyond the piston circumference, said second annular seal ( 16 ) in the second switch-over position bears on an annularly encircling housing inner wall portion ( 7 ) that tapers toward the valve piston ( 6 ).

6. The sanitary change-over valve as claimed in claim 5 , wherein the valve piston ( 6 ) on the piston circumference thereof has at least one second piston outlet ( 17 ) by which the first flow path of the fluid is routed.

7. The sanitary change-over valve as claimed in claim 6 , wherein the at least one second piston outlet ( 17 ) is provided in a piston portion that is disposed between the first annular seal ( 14 , 40 ), and the second annular seal ( 16 ).

8. The sanitary change-over valve as claimed in claim 7 , wherein the housing inner wall portion ( 7 ) that tapers toward the valve piston ( 6 ) is separated from a neighboring cylindrical housing inner wall portion ( 38 ) by an edge ( 39 ), and the valve piston ( 6 ) in the second switch-over position is adapted to move under pressure of a flow of incident fluid from a first sliding position in which the valve piston ( 6 ) by way of the second annular seal ( 16 ) thereof bears in a sealing manner on the edge ( 39 ) to a second sliding position in which the second annular seal ( 16 ) bears in a radially sealing manner on the neighboring cylindrical housing inner wall portion ( 38 ).

9. The sanitary change-over valve as claimed in claim 1 , wherein the valve piston ( 6 ) that is displaceably guided in the valve housing ( 2 ) is guided in a rotationally secured manner by an anti-rotation safeguard ( 18 ).

10. The sanitary change-over valve as claimed in claim 9 , wherein the anti-rotation safeguard has at least one securing groove or securing spring ( 19 ) that is disposed on the piston circumference of the valve piston ( 6 ) and interacts with an assigned securing spring or securing groove ( 20 ) on a housing internal circumference of the valve housing ( 2 ) that borders a sliding path of the valve piston.

11. The sanitary change-over valve as claimed in claim 1 , wherein the valve piston ( 6 ) on the front end region thereof that faces away from the piston base ( 10 ) in relation to a housing internal circumference of the valve housing ( 2 ) that borders the valve piston ( 6 ) along a sliding path thereof is sealed by a rolling diaphragm ( 21 ) or a diaphragm seal which is held tightly on the piston circumference, and on the housing internal circumference.

12. A sanitary functional group having a change over valve ( 1 ), comprising a valve housing ( 2 ) which has one valve inlet ( 3 ) and first and second selectively actuatable valve outlets ( 4 , 5 ), a valve piston ( 6 ) which is movable from a first switch-over position in which fluid is adapted to be guided by a first flow path routed through the first valve outlet ( 4 ) to a second switch-over position in which the fluid is guided by a second flow path routed to the second valve outlet ( 5 ) as soon as a portion of the second flow path that is routed beyond the change-over valve ( 1 ) has been released, the valve piston ( 6 ) is configured as a hollow body through which the fluid in the course of at least one of the flow paths is adapted to be routed by at least one piston inlet ( 9 ) that is disposed on a piston circumference, the fluid that is routed by the at least one piston inlet ( 9 ) in the course of the second flow path is routed by a first piston outlet that is provided on a piston end side that faces away from a piston base ( 10 ), and a flow throttle ( 12 ), a flow regulator ( 11 ), or a return flow preventer is provided in the first piston outlet, wherein the valve housing ( 2 ) of said change-over valve being inserted into an insert housing ( 24 ), said insert housing ( 24 ) being disposed in a coupling housing, said coupling housing ( 22 ) having a sleeve-shaped housing portion ( 23 ) for receiving the insert housing ( 24 ), a line connector ( 25 ) for the second flow path being provided laterally on said sleeve-shaped housing portion ( 23 ), one front end of the sleeve-shaped housing portion ( 23 ) receives the insert housing ( 24 ) on which a line connector ( 25 ) for the second flow path is provided laterally, the one front end of the sleeve-shaped housing portion ( 23 ) forms a housing inlet of the coupling housing ( 22 ) and another front end forms a housing outlet of the coupling housing.

13. The sanitary functional group as claimed in claim 12 , wherein the insert housing ( 24 ) from the inlet-side front side of the coupling housing ( 22 )

Assignees

• Neoperl Gmbh

Inventors

• Meyer Burkhard

Classifications

• F16K11/00 Primary

  Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves · CPC title

• F16K15/02

  with guided rigid valve members · CPC title

• E03C1/0408

  Water installations especially for showers (E03C1/06 takes precedence; shower heads B05B1/18) · CPC title

• Y10T137/2683

  Plural outlets control with automatic reset · CPC title

• E03C2201/30

  Diverter valves in faucets or taps · CPC title