1. An immersed surface-cleaning device comprising:
a filtration chamber with:
a stiff lower wall extending facing the surface to be cleaned and between two axles bearing rolling components intended for rolling on the surface to be cleaned,
at least one liquid inlet into filtration chamber, each liquid inlet provided through said lower wall and given a non-return device, and
at least one filter extending a distance from each liquid inlet so that holding zone for solid impurities is defined between liquid inlet(s) and filter(s),
a hydraulic circuit suitable for forming a circulation of liquid through liquid inlet(s) and into filtration chamber under the effect of pumping means,
wherein at least one non-return device of liquid inlet consists of a conduit, a so-called non-return conduit, suitable for extending into holding zone from liquid inlet and said lower wall, having free end opening into holding zone, and for preventing passage at least of impurities in the opposite direction from holding zone through liquid inlet at least when pumping means are inactive.
2. A device according to claim 1, wherein liquid inlet situated in the lower part of filtration chamber, and filter(s) extending above this liquid inlet non-return conduit extends upward into holding zone at least when pumping means are active and when the device is facing a horizontal surface portion.
3. A device according to claim 1, wherein non-return conduit has end opening at the upper part of holding zone under the filter(s) and a distance from the filter(s).
4. A device according to claim 1, wherein-non-return conduit is stiff.
5. A device according to claim 1, wherein-non-return conduit has at least one distal part formed by flexible sleeve capable of flattening on itself and closing spontaneously when pumping means are inactive.
6. A device according to claim 5, wherein flexible sleeve is suited so that it is not capable of spontaneously turning inside-out in the opposite direction.
7. A device according to claim 5, wherein flexible sleeve is made of a material based on synthetic fibers.
8. A device according to claim 5, wherein non-return conduit has stiff base extending into holding zone from liquid inlet and suitable for receiving flexible sleeve.
9. A device according to claim 8, wherein flexible sleeve is suited so that it can be mounted on base in a removable manner in order to allow changing of this flexible sleeve.
10. A device according to claim 1, wherein free end of non-return conduit opens horizontally or downward.
11. A device according to claim 5, wherein free end of non-return conduit opens upward.
12. A device according to claim 1, wherein non-return conduit is suitable for forming at least one baffle starting from liquid inlet.
13. A device according to claim 1, wherein each non-return device consists of non-return conduit.
14. A device according to claim 1, wherein with holding zone having at least one concave holding volume, generally elongated horizontally between two end portions, at least one liquid inlet is arranged at the lower part and offset on the side of an end portion of concave holding volume.
15. A device according to claim 14, wherein for each concave holding volume, it has a single liquid inlet.
16. A device according to claim 14, wherein it has two concave holding volumes on both sides of transverse motor casing, the two liquid inlets being on opposite sides from one another.
17. A device according to claim 1, wherein it has at least two liquid inlets arranged on both sides of a median transverse zone of lower wall.
18. A device according to claim 17, wherein each liquid inlet is flared towards the axle to which it is closest.
19. A device according to claim 1, wherein it has at least one pumping component situated in the upper part of the device, and at least one electric motor device for driving this pumping component.
20. A device according to claim 1, wherein said stiff lower wall is mounted so as to be removable with respect to stiff casing wall that defines a lower opening closed by lower wall, and by the fact that it has filter mounted on stiff lower wall so as to cover each liquid inlet.
21. A device according to claim 20, wherein filter is mounted on said lower wall in such a way as to extend at least roughly on the periphery of the lower opening when said lower wall is in place.
22. A device according to claim 21, wherein filter is mounted on the periphery of said lower wall, which is contiguous with the periphery of the lower opening of stiff casing wall.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An internal bracing for ductwork having a flow passage therethrough, said internal bracing comprising:
an elongated member having a first end and a second end, said first end being configured to be attached to a first side of the ductwork and said second end being configured to be attached to a second side of the ductwork opposite to the first side of the ductwork, said elongated member being configured to extend across the flow passage.
2. The internal bracing according to claim 1, wherein said first end of said elongated member is configured to attach to a baffle plate provided within the ductwork.
3. The internal bracing according to claim 2, wherein said baffle plate is configured to receive therethrough an array of tubes of a heat exchanger provided within the flow passage.
4. The internal bracing according to claim 1, further comprising one or more additional elongated members each having a first end and a second end, said first end being configured to be attached to the first side of the ductwork and said second end being configured to be attached to the second side of the ductwork opposite to the first side of the ductwork, said one or more additional elongated members being configured to extend across the flow passage.
5. The internal bracing according to claim 4, wherein said elongated member and said one or more additional elongated members are integrally formed in a panel having a first base portion integrally connected to said first ends of said elongated member and said one or more additional elongated members, said first base portion being configured to be attached to the first side of the ductwork.
6. The internal bracing according to claim 5, wherein said first base portion includes a plurality of mounting holes.
7. The internal bracing according to claim 5, wherein said panel has a second base portion integrally connected to said second ends of said elongated member and said one or more additional elongated members, said second base portion being configured to be attached to the second side of the ductwork.
8. The internal bracing according to claim 7, wherein said first base portion and said second base portion include a plurality of mounting holes.
9. The internal bracing according to claim 7, wherein said panel includes a mounting portion that extends about an entire perimeter thereof and is configured to be attached to the ductwork, said mounting portion includes said first base portion and said second base portion.
10. The internal bracing according to claim 9, wherein said mounting portion includes a plurality of mounting holes.
11. The internal bracing according to claim 7, wherein said panel is a planar sheet having elongated fluid flow openings extending therethrough, and wherein portions of said planar sheet in between adjacent elongated fluid flow openings being said elongated member and said one or more additional elongated members.
12. The internal bracing according to claim 1, further comprising a transverse elongated member having a first end and a second end, said first end being configured to be attached to a third side of the ductwork and said second end being configured to be attached to a fourth side of the ductwork opposite to the third side of the ductwork, said transverse elongated member being configured to extend across the flow passage in a direction different from said elongated member.
13. The internal bracing according to claim 12, wherein said transverse elongated member extends in a direction substantially perpendicular to said elongated member.
14. The internal bracing according to claim 12, further comprising one or more additional transverse elongated members each having a first end and a second end, said first end being configured to be attached to the third side of the ductwork and said second end being configured to be attached to the fourth side of the ductwork opposite to the third side of the ductwork, said one or more additional transverse elongated members being configured to extend across the flow passage.
15. The internal bracing according to claim 14, wherein said elongated member, said one or more additional elongated members, said transverse elongated member, and said one or more additional transverse elongated members are integrally formed in a planar panel.
16. The internal bracing according to claim 15, wherein said planar panel includes a mounting portion that extends about an entire perimeter thereof and is configured to be attached to the ductwork.
17. The internal bracing according to claim 16, wherein said mounting portion includes a plurality of mounting holes.
18. A ductwork system comprising:
a duct having a plurality of ducting panels joined together to define a flow passage extending through said duct; and
an elongated member having a first end and a second end, said first end being attached to a first ducting panel of said plurality of ducting panels and said second end being attached to a second ducting panel of said plurality of ducting panels, said elongated member extending across said flow passage.
19. The ductwork system according to claim 18, further comprising:
a baffle having a first end attached to said first ducting panel and a second end extending within said flow passage,
wherein said first end of said elongated member is attached to said second end of said baffle, thereby providing attachment of said first end of said elongated member to said first ducting panel via said baffle.
20. The ductwork system according to claim 19, wherein said baffle is configured to receive therethrough an array of tubes of a heat exchanger provided within said flow passage.
21. A ductwork system comprising:
a duct having a plurality of ducting panels joined together to define a flow passage extending through said duct,
wherein said duct includes means for resisting damage thereto caused by a detonation within said duct.
22. The ductwork system according to claim 21, wherein said means for resisting damage includes providing said duct with an outer profile having a zig-zag shape.
23. The ductwork system according to claim 21, wherein said means for resisting damage includes providing said duct with an outer profile having an accordion shape.
24. The ductwork system according to claim 21, wherein said means for resisting damage includes providing said duct with at least one curved side along an axial length of said duct.
25. The ductwork system according to claim 21, wherein said means for resisting damage includes providing said duct with at least one faceted side along an axial length of said duct.
26. The ductwork system according to claim 25, wherein said at least one faceted side is formed by providing a first ducting panel of said plurality of ducting panels having a first section and a second section, and wherein said first section is at a non-zero angle to said second section.
27. The ductwork system according to claim 26, wherein said first ducting panel further includes a third section, and wherein said third section forms a baffle within said flow passage.
28. The ductwork system according to claim 27, wherein said baffle is configured to receive therethrough an array of tubes of a heat exchanger provided within said flow passage.
29. The ductwork system according to claim 27, wherein said means for resisting damage further includes an elongated member having a first end and a second end, said first end being attached to said baffle and said second end being attached to a second ducting panel of said plurality of ducting panels, said elongated member extending across said flow passage.
30. The ductwork system according to claim 25, wherein said at least one faceted side is formed by joining a first ducting panel of said plurality of ducting panels to a second ducting panel of said plurality of ducting panels, and wherein said first ducting panel is joined to said second ducting panel at a non-zero angle.
31. The ductwork system according to claim 30, wherein said first ducting panel is a planar sheet of metal having a folded end portion and said second ducting panel is a planar sheet of metal having a folded end portion, and wherein said folded end portions of said first and second ducting panels are joined together in a parallel orientation such that main portions of said first and second ducting panels are provided at said non-zero angle.
32. The ductwork system according to claim 31, wherein said end portions of said first and second ducting panels are joined together by bolt and nut fasteners.
33. The ductwork system according to claim 32, wherein terminal ends of said end portions of said first and second ducting panels are joined together by a weld.
34. The ductwork system according to claim 31, wherein terminal ends of said end portions of said first and second ducting panels are joined together by a weld.
35. The ductwork system according to claim 30, wherein said first ducting panel includes a baffle section, and wherein said baffle section extends within said flow passage.
36. The ductwork system according to claim 35, wherein said baffle section is configured to receive therethrough an array of tubes of a heat exchanger provided within said flow passage.
37. The ductwork system according to claim 35, wherein said means for resisting damage further includes an elongated member having a first end and a second end, said first end being attached to said baffle section and said second end being attached to a third ducting panel of said plurality of ducting panels, said elongated member extending across said flow passage.
38. The ductwork system according to claim 25, wherein said means for resisting damage further includes an elongated member having a first end and a second end, said first end being attached to a first ducting panel of said plurality of ducting panels and said second end being attached to a second ducting panel of said plurality of ducting panels, said elongated member extending across said flow passage.
39. The ductwork system according to claim 38, further comprising:
a baffle having a first end attached to said first ducting panel and a second end extending within said flow passage,
wherein said first end of said elongated member is attached to said second end of said baffle, thereby providing attachment of said first end of said elongated member to said first ducting panel via said baffle.
40. The ductwork system according to claim 21, wherein said means for resisting damage includes an elongated member having a first end and a second end, said first end being attached to a first ducting panel of said plurality of ducting panels and said second end being attached to a second ducting panel of said plurality of ducting panels, said elongated member extending across said flow passage.
41. The ductwork system according to claim 40, further comprising:
a baffle having a first end attached to said first ducting panel and a second end extending within said flow passage,
wherein said first end of said elongated member is attached to said second end of said baffle, thereby providing attachment of said first end of said elongated member to said first ducting panel via said baffle.
42. The ductwork system according to claim 41, wherein said baffle is configured to receive therethrough an array of tubes of a heat exchanger provided within said flow passage.
43. A method for providing detonation damage resistance to a duct having a plurality of ducting panels joined together to define a flow passage extending through the duct, said method comprising:
providing the duct with at least one curved side or at least one faceted side along an axial length of the duct.
44. The method according to claim 43, wherein the at least one curved side or the at least one faceted side is attached to or integral to a baffle provided within the flow passage of the duct.
45. The method according to claim 44, wherein the baffle is configured to receive an array of tubes of a heat exchanger provided within the flow passage.
46. A method for providing detonation damage resistance to a duct having a plurality of ducting panels joined together to define a flow passage extending through the duct, said method comprising:
providing an internal bracing within the duct to tie at least two sides of the duct together, the internal bracing extending across the flow passage.