Valve with electrodynamic actuator

Patent metadata

Field	Value
Publication number	US-11326710-B2
Application number	US-202017021155-A
Country	US
Kind code	B2
Filing date	Sep 15, 2020
Priority date	Dec 22, 2017
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

A valve with an electrodynamic actuator includes a magnet device that generates a magnetic field and a drive element that is movable relative to the magnet device. The drive element is pivotally mounted and comprises a current-carrying air coil that is arranged in the magnetic field and is fixedly coupled to a coil carrier made of a non-magnetic material. Sealing surfaces for sealing valve seats are arranged on two opposite sides of the drive element, such that the sealing surfaces face in opposite directions. A housing is comprised of a plurality of plastic housing parts and a metallic encasement. The metallic encasement surrounds an upper area of the housing in which the electrodynamic actuator is arranged and at least partially surrounds a lower area of the housing in which fluid channels are arranged.

First claim

The invention claimed is:

1. A valve with an electrodynamic actuator comprising:
a magnet device that generates a magnetic field;
a drive element being movable relative to the magnet device, the drive element being pivotally mounted;
a current-carrying air coil that is arranged in the magnetic field and is fixedly coupled to a coil carrier made of a non-magnetic material, wherein sealing surfaces for sealing valve seats are arranged on two opposite sides of the drive element, such that the sealing surfaces face in opposite directions; and
a housing comprised of a plurality of plastic housing parts and a metallic encasement, wherein the metallic encasement surrounds an upper area of the housing in which the electrodynamic actuator is arranged and at least partially surrounds a lower area of the housing in which fluid channels are arranged.

2. The valve according to claim 1 , wherein the metallic encasement comprises two sheathing parts which are inserted into each other and which are at least partially inserted over the plurality of plastic housing parts.

3. The valve according to claim 1 , wherein the metallic encasement has extensions extending into the lower area of the housing.

4. The valve according to claim 1 , wherein the plurality of plastic housing parts have mounting areas with which the plurality of plastic housing parts engage in the metallic encasement.

5. The valve according to claim 4 , wherein the mounting areas engage with extensions of the metallic encasement.

6. The valve according to claim 4 , wherein elevations are provided in the mounting areas.

7. The valve according to claim 6 , wherein a height of the elevations is selected such that a sufficient clamping force is achieved between the plurality of plastic housing parts and the metallic encasement.

8. The valve according to claim 6 , wherein indentations are located directly adjacent to the elevations.

9. The valve according to claim 1 , wherein a fluid plate is molded to the plurality of plastic housing parts.

10. The valve according to claim 9 , wherein the fluid channels are formed in the fluid plate.

11. The valve according to claim 2 , wherein the two sheathing parts each have flaps widening in a direction away from a respective sheathing part.

12. The valve according to claim 11 , wherein the flaps engage in corresponding recesses of the respective other sheathing part in order to fasten the two sheathing parts together.

13. The valve according to claim 1 , wherein a further plastic housing part forms a cover which closes the housing.

14. The valve according to claim 1 , wherein, when assembled, all housing parts of the plurality of housing parts form a uniform surface.

15. The valve according to claim 1 , wherein the metallic encasement extends from an upper portion that surrounds the current-carrying air coil to a lower portion that is associated with the lower area in which the fluid channels are arranged.

16. The valve according to claim 15 , wherein the metallic encasement comprises two sheathing parts which are coupled to each other at the upper portion and extensions which extend from the upper portion to engage with mounting areas of the plurality of plastic housing parts.

17. The valve according to claim 16 , wherein the plurality of plastic housing parts comprises at least a first plastic housing part and a second plastic housing part that are coupled together.

18. The valve according to claim 17 , including a fluid plate formed as part of the first and second housing parts, the fluid plate including the fluid channels.

Assignees

• Buerkert Werke Gmbh & Co Kg

Inventors

• Scheibe Ralf
• Hettinger Sebastian
• Ripsam Christina
• Schwab Holger
• Knauss Simone
• Baumann Johannes
• Hartmann Christian
• Kuenzler Rainer

Classifications

• Y10T137/86622

  Motor-operated · CPC title

• F16K27/029

  Electromagnetically actuated valves · CPC title

• F16K31/0682

  with an articulated or pivot armature · CPC title

• F16K31/0675 Primary

  Electromagnet aspects, e.g. electric supply therefor · CPC title

• F16K31/0668

  Sliding valves · CPC title