Flow plate for a humidifier

Patent metadata

Field	Value
Publication number	US-11069908-B2
Application number	US-201716335882-A
Country	US
Kind code	B2
Filing date	Sep 22, 2017
Priority date	Sep 23, 2016
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

A flow plate for a humidifier, and to such a humidifier having a plurality of flow plates and water exchange membranes are described. The flow plate has a flow field with a plurality of free-standing support elements, wherein the support elements extend, at least in sections, perpendicular to the flat surface plane of the flow plate. Gas to be humidified or gas giving off moisture flows on the flow field. In the humidifier, the flow plates are arranged in a stack, wherein a membrane composite having at least one water exchange membrane is arranged between each pair of adjacent flow plates in the stack. The support elements improve the performance of the humidifier and therefore the number of flow plates can be reduced, making a lower-weight and space-saving design possible.

First claim

The invention claimed is:

1. A flow plate for a humidifier comprising:
a flow field with a plurality of freestanding support elements,
wherein the support elements extend, at least in sections, perpendicularly to a flat surface plane of the flow plate, and the support elements are comprised of metal,
wherein the support elements are elastic and deform in a direction perpendicular to the flat surface plane of the flow plate when contacted by another layer of the humidifier.

2. The flow plate according to claim 1 , wherein the support elements are resilient perpendicular to the flat surface plane.

3. The flow plate according to claim 1 , wherein the support elements each have a specific width B parallel to the flat surface plane of the flow plate and a specific length L parallel to the flat surface plane of the flow plate, wherein: L≤10 B, and wherein the width B and the length L are each determined at the end of the support elements facing the flow plate.

4. The flow plate according to claim 3 , wherein the support elements each have a specific height H perpendicular to the flat surface plane of the flow plate, wherein: H≤6 L.

5. The flow plate according to claim 1 , wherein the support elements each have a specific height H perpendicular to the flat surface plane of the flow plate, wherein: H≤3.0 mm.

6. The flow plate according to claim 3 , wherein: L≤5.0 mm.

7. The flow plate according to claim 3 , wherein, for a specific maximum distance d max of adjacent support elements parallel to the flat surface plane of the flow plate, the following is true: d max ≤6 L, and the specific maximum distance d max of adjacent support breaks up laminar flow.

8. The flow plate according to claim 1 , wherein the support elements are formed in a rod-shaped manner, at least in sections.

9. The flow plate according to claim 1 , wherein an end of the support elements remote from the flow plate is hook-like.

10. The flow plate according to claim 9 , wherein the hook-like end of the support elements is bent towards the flow plate by more than 90 degrees, relative to a plumb line direction oriented perpendicularly to the flat surface plane.

11. The flow plate according to claim 1 , wherein the support elements are arranged at periodic distances from one another.

12. The flow plate according to claim 11 , wherein the support elements are arranged at periodic distances from one another parallel to the flat surface plane of the flow plate along a first direction and along a second direction.

13. The flow plate according to claim 12 , wherein a first distance between adjacent support elements determined along the first direction is different from a second distance between adjacent support elements determined along the second direction.

14. The flow plate according to claim 13 , wherein the first direction and the second direction are perpendicular to one another.

15. The flow plate according to claim 1 , wherein the flow field has a plurality of freestanding support elements, wherein the support elements extend on both surfaces of the flow plate.

16. The flow plate according to claim 1 , wherein the number of support elements per unit of area in at least one flow field of a flow plate is at least 20 cm −2 .

17. The flow plate according to claim 1 , wherein the support elements are arranged on a mat which is arranged parallel to the flat surface plane of the flow plate.

18. The flow plate according to claim 17 , wherein the support elements and the mat are fabricated from the same material.

19. The flow plate according to claim 18 , wherein the support elements and the mat are formed in one part.

20. The flow plate according to claim 1 , further comprising through-openings for conducting a gas through the flow plate, wherein the flow field is fluidically connected to the through-openings.

21. The flow plate according to claim 1 , wherein the flow plate is formed in one piece, and the support elements are formed by cutting the flow plate and bending the cut support elements away from the flow plate.

22. A flow plate for a humidifier comprising:
a flow field with a plurality of freestanding support elements, and
the support elements extending, at least in sections, perpendicularly to a flat surface plane of the flow plate, the support elements being elastic and deforming in a direction perpendicular to the flat surface plane of the flow plate when contacted by another layer of the humidifier,
wherein the flow plate consists at least of two elements connected to one another, a first element comprised of metal terminates the flow plate outwardly in a frame-shaped manner, and a second element comprised of plastic is inserted into the first element.

23. The flow plate according to claim 22 , wherein the support elements extend from the second element and the support elements are comprised of plastic.

24. The flow plate according to claim 22 , wherein the support elements comprise a thermoplastic and one or more of the following materials: polyamide, polypropylene, polyethylene, vinyl, polyester, polyether ether ketone, polyether sulfone, polyvinyl sulfone, polyamide imide, polyoxyethylene, polyphthalamide.

Assignees

• Reinz Dichtungs Gmbh

Inventors

• Buntz Werner
• Glueck Rainer
• Speidel Andre
• Stoehr Thomas

Classifications

• B01D63/0822

  Plate-and-frame devices · CPC title

• H01M8/04149 Primary

  by diffusion, e.g. making use of membranes · CPC title

• B01D2313/14

  Specific spacers · CPC title

• B01D65/08 Primary

  Prevention of membrane fouling or of concentration polarisation · CPC title

• Y02E60/50

  Fuel cells · CPC title