CA2376070A1 - Sealing means for electrically driven water purification units and method of manufacturing thereof - Google Patents
Sealing means for electrically driven water purification units and method of manufacturing thereof Download PDFInfo
- Publication number
- CA2376070A1 CA2376070A1 CA002376070A CA2376070A CA2376070A1 CA 2376070 A1 CA2376070 A1 CA 2376070A1 CA 002376070 A CA002376070 A CA 002376070A CA 2376070 A CA2376070 A CA 2376070A CA 2376070 A1 CA2376070 A1 CA 2376070A1
- Authority
- CA
- Canada
- Prior art keywords
- spacer
- perimeter
- electrically driven
- inner peripheral
- process apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
An electrically driven membrane process apparatus is provided comprising a first spacer having a perimeter having a surface with an inner peripheral ed ge defining an opening, and a recess formed on the inner peripheral edge, and a n ion exchange membrane having an outer edge fitted within the recess. The spacer can further comprise a plurality of bosses and an ion exchange membra ne having a corresponding plurality of apertures for receiving the bosses. The spacer can include a plastic mesh consisting essentially of polypropylene or polyethylene, and a perimeter surrounding the plastic mesh, the perimeter comprising material selected from the group consisting of thermoplastic vulcanizates and thermoplastic elastomeric olefins. The spacer can have an upstanding seal member depending therefrom, received by groove within a corresponding frame member. A second spacer is also provided having a continuous flange depending from its surface and surrounding a throughbore, for pinching a portion of the first spacer. A method of injection molding a thin plastic part comprising a perimeter having an inner peripheral edge and a mesh joined to the inner peripheral edge is also provided including the step s of (a) providing first and second mold halves, each of the mold halves havin g an interior surface anda continuous ridge depending therefrom; and (b) pinching opposite side of the mesh between the ridges to form a flow barrier .
Claims (45)
1. An electrically driven membrane process apparatus comprising:
a first spacer having a perimeter having a surface with an inner peripheral edge defining an opening, and a recess formed on said inner peripheral edge; and an ion exchange membrane having an outer edge fitted within said recess.
a first spacer having a perimeter having a surface with an inner peripheral edge defining an opening, and a recess formed on said inner peripheral edge; and an ion exchange membrane having an outer edge fitted within said recess.
2. The electrically driven membrane process apparatus as claimed in claim 1 wherein said recess is continuous along said inner peripheral edge.
3. The electrically driven membrane process apparatus as claimed in claim 2 wherein said ion exchange membrane has a top surface and said top surface is vertically disposed no lower than said surface of said perimeter when said ion exchange membrane is fitted in said recess.
4. The electrically driven membrane process apparatus as claimed in claim 3 wherein said first spacer further comprises a plurality of bosses extending from said recess substantially perpendicular thereto, and wherein said ion exchange membrane further comprises corresponding apertures formed therein for receiving said bosses.
5. The electrically driven membrane process apparatus as claimed in claim 4 further comprising a second spacer separated from said first spacer by said ion exchange membrane, wherein said first spacer has an upstanding seal member depending therefrom and said second spacer has a groove for receiving said seal member.
6. The electrically driven membrane process apparatus as claimed in claim 5 wherein said upstanding seal member is a sealing bead.
7. The electrically driven membrane process apparatus as claimed in claim 6 wherein said sealing bead is an O-ring.
8. The electrically driven membrane process apparatus as claimed in claim 7 wherein said perimeter of said first spacer is comprised of material selected from the group consisting of thermoplastic vulcanizates, thermoplastic elastomeric olefins and fluoropolymers
9. The electrically driven membrane process apparatus as claimed in claim 7 wherein said perimeter of said first spacer is comprised of a thermoplastic vulcanizate.
10. The electrically driven membrane process apparatus as claimed in claim 9 wherein said second spacer is made of a harder material than said first spacer.
11. The electrically driven membrane process apparatus as claimed in claim 10 wherein said first spacer is a C-spacer.
12. An electrically driven membrane process apparatus comprising a spacer with a plurality of bosses and an ion exchange membrane having a corresponding plurality of apertures for receiving said bosses.
13. The electrically driven membrane process apparatus as claimed in claim 12 wherein said spacer further comprises a perimeter having a surface with an inner peripheral edge defining an opening, and a recess formed on said inner peripheral edge for fitting said ion exchange membrane, wherein said bosses extend from said recess substantially perpendicular thereto.
14. The electrically driven membrane process apparatus as claimed in claim 13 wherein said perimeter is comprised of material selected from the group consisting of thermoplastic vulcanizates, thermoplastic elastomeric olefins, and fluoropolymers.
15. The electrically driven membrane process apparatus as claimed in claim 13 wherein said perimeter is comprised of a thermoplastic vulcanizate.
16. The electrically driven membrane process apparatus as claimed in claim 13 wherein said spacer is a C-spacer.
17. The electrically driven membrane process apparatus as claimed in claim 13 wherein said spacer is a D-spacer.
18. A spacer of an electrically driven membrane process apparatus comprising:
a plastic mesh consisting essentially of polypropylene or polyethylene; and a perimeter surrounding said plastic mesh, said perimeter comprising material selected from the group consisting of thermoplastic vulcanizates and thermoplastic elastomeric olefins.
a plastic mesh consisting essentially of polypropylene or polyethylene; and a perimeter surrounding said plastic mesh, said perimeter comprising material selected from the group consisting of thermoplastic vulcanizates and thermoplastic elastomeric olefins.
19. The spacer as claimed in claim 18 wherein said perimeter is comprised of thermoplastic vulcanizates.
20. The electrically driven membrane process apparatus comprising the spacer as claimed in claim 19.
21. An electrically driven membrane process apparatus having a first spacer and a frame member separated by an ion exchange membrane, said first spacer having an upstanding seal member depending therefrom and said frame member having a groove for receiving said seal member.
22. The apparatus as claimed in claim 21 wherein said frame member is a second spacer.
23. The apparatus as claimed in claim 21 wherein said frame member is selected from the group consisting of anode end plates and cathode end plates.
24. The apparatus as claimed in claim 21 wherein said seal member is an o-ring.
25. The apparatus as claimed in claim 21 wherein said seal member is a sealing bead.
26. The apparatus as claimed in claim 21 wherein said first spacer is a C-spacer.
27. The apparatus as claimed in claim 21 wherein said first spacer is a D-spacer.
28. The apparatus as claimed in claim 21 wherein said first spacer is comprised of a material selected from the group consisting of thermoplastic vulcanizates, thermoplastic elastomeric olefins, and fluoropolymers.
29. The apparatus as claimed in claim 21 wherein said frame member is made of a harder material than said first spacer.
30. An electrically driven membrane process apparatus having a first spacer and a frame member separated by an ion exchange membrane, said first spacer comprising a first surface having a first throughbore for flowing an aqueous liquid, said second spacer comprising:
a second surface;
a second throughbore extending through said second surface and communicating with said first throughbore; and a continuous flange depending from said second surface and surrounding said second throughbore, said flange pinching a portion of said first surface surrounding said first throughbore.
a second surface;
a second throughbore extending through said second surface and communicating with said first throughbore; and a continuous flange depending from said second surface and surrounding said second throughbore, said flange pinching a portion of said first surface surrounding said first throughbore.
31. The apparatus as claimed in claim 30 wherein said frame member is a second spacer.
32. The apparatus as claimed in claim 30 wherein said frame member is selected from the group consisting of anode end plates and cathode end plates.
33. The apparatus as claimed in claim 30 wherein said second throughbore facilitates D-flow.
34. An electrically driven membrane process apparatus comprising:
a first spacer having a first perimeter having a surface with a first inner peripheral edge defining a first opening, a recess formed on said first inner peripheral edge, and a mesh extending across said first opening and joined to said first inner peripheral edge;
a second spacer having a second perimeter having a surface with a second inner peripheral edge defining a second opening;
an ion exchange membrane fitted within said recess and extending across said first opening and having a surface portion engaged to said second perimeter inwardly of said first inner peripheral edge; and a ridge depending from said second perimeter of said second spacer and pinching said surface portion of said ion exchange membrane against said mesh, thereby preventing or reducing likelihood of buckling of said mesh.
a first spacer having a first perimeter having a surface with a first inner peripheral edge defining a first opening, a recess formed on said first inner peripheral edge, and a mesh extending across said first opening and joined to said first inner peripheral edge;
a second spacer having a second perimeter having a surface with a second inner peripheral edge defining a second opening;
an ion exchange membrane fitted within said recess and extending across said first opening and having a surface portion engaged to said second perimeter inwardly of said first inner peripheral edge; and a ridge depending from said second perimeter of said second spacer and pinching said surface portion of said ion exchange membrane against said mesh, thereby preventing or reducing likelihood of buckling of said mesh.
35. The apparatus as claimed in claim 34 wherein said ion exchange membrane has first and second side surfaces, said second side surface having a second side surface portion engaging said second perimeter wherein a first side surface portion opposite to that of said second side surface portion is disposed inwardly of said first inner peripheral edge, and said ridge compresses said second side surface portion.
36. The apparatus as claimed in claim 35 wherein said second spacer has a throughgoing bore and said second side surface portion is disposed between said throughgoing bore and said second inner peripheral edge.
37. The apparatus as claimed in claim 36 wherein said ridge traverses said second side surface portion.
38. A method of injection molding a thin plastic part comprising a perimeter having an inner peripheral edge and a mesh joined to said inner peripheral edge, including the steps of (a) providing a mold having a cavity and a core, the cavity having a first interior surface and a first continuous ridge depending from the first interior surface, the core having a second interior surface and a second continuous ridge depending from the second interior surface conterminous with the first continuous ridge; (b) disposing a mesh having opposite sides between the cavity and the core; and (c) pinching opposite side of the mesh between the ridges to form a flow barrier.
39. The method as claimed in claim 38 wherein the perimeter and the mesh are comprised of different materials.
40. The method as claimed in claim 39 wherein the perimeter is comprised of materials selected from the group consisting of thermoplastic vulcanizates, thermoplastic olefins, and fluoropolymers.
41. The method as claimed in claim 39 wherein the perimeter is comprised of a thermoplastic vulcanizate.
42. The method as claimed in claim 40 wherein the mesh is comprised of materials selected from the group consisting of polypropylene and polyethylene.
43. The method as claimed in claim 41 wherein the mesh is comprised of materials selected from the group consisting of polypropylene and polyethylene.
44. The method as claimed in claim 43 wherein the mesh is not slack.
45. The method as claimed in claim 38 wherein the cavity further includes hanging pins depending from the first interior surface, and additionally comprising, in step (b), suspending the mesh from the hanging pins.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2376070A CA2376070C (en) | 1999-06-08 | 2000-06-08 | Sealing means for electrically driven water purification units and method of manufacturing thereof |
| CA2684757A CA2684757C (en) | 1999-06-08 | 2000-06-08 | Sealing means for electrically driven water purification units and method of manufacturing thereof |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/327,598 | 1999-06-08 | ||
| US09/327,598 US6235166B1 (en) | 1999-06-08 | 1999-06-08 | Sealing means for electrically driven water purification units |
| CA2,279,201 | 1999-07-30 | ||
| CA002279201A CA2279201A1 (en) | 1999-06-08 | 1999-07-30 | Sealing means for electrically driven water purification units and method of manufacturing thereof |
| CA2376070A CA2376070C (en) | 1999-06-08 | 2000-06-08 | Sealing means for electrically driven water purification units and method of manufacturing thereof |
| PCT/CA2000/000687 WO2000075082A1 (en) | 1999-06-08 | 2000-06-08 | Sealing means for electrically driven water purification units and method of manufacturing thereof |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2684757A Division CA2684757C (en) | 1999-06-08 | 2000-06-08 | Sealing means for electrically driven water purification units and method of manufacturing thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2376070A1 true CA2376070A1 (en) | 2000-12-14 |
| CA2376070C CA2376070C (en) | 2010-01-26 |
Family
ID=27171000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2376070A Expired - Fee Related CA2376070C (en) | 1999-06-08 | 2000-06-08 | Sealing means for electrically driven water purification units and method of manufacturing thereof |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2376070C (en) |
-
2000
- 2000-06-08 CA CA2376070A patent/CA2376070C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2376070C (en) | 2010-01-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20180608 |