Valve, pump system and method for operation of a pump system

Patent metadata

Field	Value
Publication number	US-10088062-B2
Application number	US-201113877234-A
Country	US
Kind code	B2
Filing date	Sep 30, 2011
Priority date	Oct 1, 2010
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A valve for the control of a fluid flow may be provided, the valve including a connection block having a cylinder-symmetrical recess, where at least one first and a second entry channel as well as a first and a second exit channel run out in the peripheral surface of the recess. A control pin, which is fitted into the recess, is rotatable about a rotation axis, having at least two through-channels and connecting different ones of the entry and exit channels of the connection block to one another depending on its angular position. A first through-channel in the pin, with respect to the rotation axis, may exclusively connect channels running out at a first axial height, to one another, and a second through-channel exclusively connecting channels running out at a second axial height, to one another.

First claim

The invention claimed is:

1. A valve to control a fluid flow, the valve comprising:
a connection block comprising a cylinder-symmetrical recess, wherein at least a first and a second entry channel as well as at least a first and a second exit channel run out in a peripheral surface of the recess; and
a control pin, which is fitted into the recess, is rotatable about a rotation axis, comprises at least two through-channels and connects different ones of the entry and exit channels of the connection block to one another depending on an angular position of the control pin about the rotation axis, wherein a first through-channel of the at least two through-channels in the control pin exclusively connects channels of the connection block running out at a first axial height with respect to the rotation axis to one another, and a second through-channel of the at least two through-channels in the control pin exclusively connects channels of the connection block running out at a second axial height with respect to the rotation axis to one another,
wherein the connection block further comprises at least one first switch-over channel running out at the first axial height in the peripheral surface of the recess, the at least one first switch-over channel exclusively connects to one of the entry or exit channels of the connection block running out at the second axial height, and the first switchover channel exclusively extends within the connection block between the peripheral surface of the recess and an outer peripheral surface of the connection block from the first axial height to the one of the entry or exit channels of the connection block running out at the second axial height into the control pin or into one of the at least two through-channels of the control pin.

2. The valve according to claim 1 , wherein the first and the second through-channels run transversely through the pin between, in each case, a first and a second pin opening lying diametrically opposite one another, and each of the first and second through-channels comprises a branch-off channel which ends at a third pin opening.

3. The valve according to claim 1 , wherein in the connection block, at least one second switch-over channel running out at the second axial height in the peripheral surface of the recess is provided, which connects to one of the entry or exit channels running out at the first axial height.

4. The valve according to claim 1 , wherein the pin comprises a third through-channel.

5. The valve according to claim 4 , wherein the at least one switch-over channel comprises a switch-over channel, the third through-channel connects two sections of the switch-over channel to one another, depending on the angular position of the pin.

6. The valve according to claim 4 wherein the third through-channel runs at an axial height between the first and the second axial height.

7. The valve according to claim 1 wherein the connection block comprises a valve hollow cylinder which forms the cylinder-symmetrical recess, receives the pin and comprises seals for sealing the channels between the pin and the connection block.

8. The valve according to claim 1 wherein the control pin is connected at one of its ends to a magnet which forms a part of a rotary drive.

9. The valve according to claim 1 wherein mechanical abutments are provided between the pin and the connection block, which define two end angle positions of the pin.

10. A pump system with two drive pumps which are connectable by way of fluid conduits in each case to a working pump for delivering a fluid, wherein both fluid conduits run through a common valve according to one of the claims 1 to 9 , and the valve is designed as a 2×2-way cross-over valve.

11. A valve to control a fluid flow, the valve comprising:
a connection block comprising a cylinder-symmetrical recess, wherein at least a first and a second entry channel as well as at least a first and a second exit channel run out in a peripheral surface of the recess; and
a control pin fitted into the recess is rotatable about a rotation axis and comprises at least two through-channels and connects different ones of the entry and exit channels of the connection block to one another depending on an angular position of the control pin about the rotation axis, wherein a first through-channel of the at least two through-channels in the control pin exclusively connects channels of the connection block running out at a first axial height with respect to the rotation axis to one another, and a second through-channel of the at least two through-channels in the control pin exclusively connects channels of the connection block running out at a second axial height with respect to the rotation axis to one another,
wherein the connection block further comprises at least one first switch-over channel running out at the first axial height in the peripheral surface of the recess, the at least one first switch-over channel exclusively connects to one of the entry or exit channels of the connection block running out at the second axial height into the control pin or into one of the at least two through-channels of the control pin, the at least one first switch-over channel exclusively extending between the peripheral surface of the recess and an outer peripheral surface of the connection block from the first axial height to the second axial height, and
wherein the first and the second through-channels run transversely through the pin between, in each case, a first and a second pin opening lying diametrically opposite one another, and each of the first and the second through-channels comprises a branch-off channel which ends at a third pin opening.

12. A valve to control a fluid flow, the valve comprising:
a connection block comprising a cylinder-symmetrical recess, wherein at least a first and a second entry channel as well as at least a first and a second exit channel run out in a peripheral surface of the recess; and
a control pin fitted into the recess is rotatable about a rotation axis and comprises at least two through-channels and connects different ones of the entry and exit channels of the connection block to one another depending on an angular position of the control pin about the rotation axis, wherein a first through-channel of the at least two through-channels in the control pin exclusively connects channels of the connection block running out at a first axial height with respect to the rotation axis to one another, and a second through-channel of the at least two through-channels in the control pin exclusively connects channels of the connection block running out at a second axial height to one another,
wherein the connection block further comprises a switch-over channel running out at the first axial height in the peripheral surface of the recess, the switch-over channel exclusively connects to one of the entry or exit channels of the connection block running out at the second axial height with respect to the rotation axis and into the control pin or into one of the at least two through-channels of the control pin, the switch-over channel exclusively extending between the peripheral surface of the recess of the connection block and an outer peripheral surface of the connection block from the first axial height to the second axial height,
wherein the control pin comprises a third through-channel that connects two sections of the switch-over channel to one another depending on the angular position of the pin.

Assignees

• Hering Joerg
• Schwiertz Norbert
• Berlin Heart Gmbh

Inventors

• Hering Joerg
• Schwiertz Norbert

Classifications

• A61M1/1037

  Human Necessities · mapped topic

• F16K11/0856 Primary

  having all the connecting conduits situated in more than one plane perpendicular to the axis of the plug · CPC title

• A61M1/1087

  Human Necessities · mapped topic

• A61M1/12

  Human Necessities · mapped topic

• F16K11/085

  with cylindrical plug · CPC title