WO2007145575A1 - Chopping device - Google Patents
Chopping device Download PDFInfo
- Publication number
- WO2007145575A1 WO2007145575A1 PCT/SE2007/000580 SE2007000580W WO2007145575A1 WO 2007145575 A1 WO2007145575 A1 WO 2007145575A1 SE 2007000580 W SE2007000580 W SE 2007000580W WO 2007145575 A1 WO2007145575 A1 WO 2007145575A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- waste disposal
- disposal unit
- shredder
- chopping device
- fixed
- Prior art date
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/26—Object-catching inserts or similar devices for waste pipes or outlets
- E03C1/266—Arrangement of disintegrating apparatus in waste pipes or outlets; Disintegrating apparatus specially adapted for installation in waste pipes or outlets
Definitions
- the present invention relates to a chopping device for a waste disposal unit.
- waste disposal units for example under an outlet from a sink or similar in an industrial kitchen, for example in a restaurant or onboard a ship, or in a normal household kitchen for the purpose of finely shredding organic material such as discarded vegetables etc.
- the organic material follows the water from the sink down into the disposal unit where it is finely shredded so that it does not block pumps or other devices situated further away in the waste system.
- the finely- shredded material improves the efficiency of the degrading processes at purifying plants, i.e. that the release of undesirable material from purifying plants into lakes and seas is reduced.
- a waste disposal unit is usually constructed with a waste disposal unit housing and a inside the waste disposal unit housing arranged rotating shredder in the form of a rotating disk.
- the material is ground or shredded between protruding ridges on the inside of a fixed shredder arranged in the waste disposal unit housing and protruding ridges arranged on the rotating shredder.
- the organic material has been sufficiently finely shredded it passes together with the water through openings in the rotating shredder and through spaces between the rotating shredder and the fixed shredder further into the waste disposal unit and from there into the waste system.
- a problem with earlier waste disposal units of the type mentioned above is that they cannot finely shred thin, tough parts of material such as threads, fibres or wetted toothpicks, but these tough parts continue further into the waste disposal unit through the small openings that are intended for the by the waste disposal unit finely shredded material and accumulates around shafts thereby causing the waste disposal unit to stop.
- US 2004/0173697 Al shows a waste disposal unit where knives are arranged to chop fibres that pass between a fixed shredder and a rotating shredder. Further is shown a on the rotating shredder arranged rotating chopping device that chops fibres which pass through holes in the rotating shredder.
- a problem with waste disposal units with chopping devices of the type shown in US 2004/0173697 Al is that the rotating chopping device and thereby also the rotating shredder is technically complex and expensive to manufacture and maintain e.g. in the event of a functional breakdown in the rotating chopping device since the rotating chopping device arranged on the rotating shredder has a number of moving parts. Furthermore, a number of rotating chopping devices have to be arranged on the rotating shredder in order to chop off fibres that pass through all the holes that are arranged in the rotating shredder since a rotating chopping device reaches only some of all these holes.
- the chopping device comprises the features in claim 1, the advantage of providing a chopping device and a rotating shredder that are simple in design is achieved which enables lower costs during manufacture and maintenance. Furthermore the advantage of that moving parts in addition to the moving shredder are avoided is achieved which reduces the risk of functional breakdown.
- Figure 1 shows schematically an exploded view of a waste disposal unit with a chopping device according to a first embodiment of the invention
- Figure 2 shows schematically a cross section of a waste disposal unit according to figure 1
- Figure 3 shows schematically an exploded view of an embodiment of a chopping device according to the invention
- Figure 4 shows schematically an exploded view of a waste disposal unit with a spring- loaded rotating shredder.
- FIG 1 shows schematically an exploded view of a, preferably by a motor 1 driven, waste disposal unit 2, with a chopping device 4 according to a first embodiment of the invention, where the waste disposal unit 2 preferably comprises a fixed shredder 6, i.e. in this case the upper part 8 of the waste disposal unit housing 10.
- the waste disposal unit 2 comprises a rotating shredder 12 in the form of a disk.
- the rotating shredder 12 is arranged inside the waste disposal unit housing 10 adjacent to the fixed shredder 6.
- the relative to the waste disposal unit housing fixed chopping device 4 closes openings 20, 22, 24 in the rotating shredder 12 each time said openings 20, 22, 24 in the rotating shredder 12 pass the relative to the waste disposal unit housing 10 fixed chopping device 4 and thereby chops off all the thin parts such as fibres or similar which, in said moment of passage, protrude downwards from the relevant opening 20, 22, 24.
- the thin, tough parts are finely shredded by that they are chopped off as they pass through said openings 20, 22, 24.
- the rotating shredder 12 is provided with one or several protruding lips 34, 36 that move in a plane under the one or several protruding ridges 14, 15 on the inside of the fixed shredder 6 and "closes" the space 26 between the rotating shredder 12 and the fixed shredder 6 by that they lie close to the wall of the fixed shredder 6.
- the relative to the waste disposal unit housing 10 fixed chopping device 4 can e.g. be removably, and even possibly resiliently fixed relative to the waste disposal unit housing 10 with the help of e.g. a screw joint, a rivet joint or a bayonet mount.
- the relative to the disposal unit housing 10 fixed chopping device 4 can alternatively be non-removably fixed relative to the disposal unit housing 10 with the help of e.g. a weld joint, a glue joint or a mechanical joint.
- the relative to the waste disposal unit housing 10 fixed chopping device 4 can be fixed in one of the above ways directly in the waste disposal unit housing 10 or to another relative to the disposal unit housing 10 fixed unit.
- the relative to the disposal unit housing 10 fixed chopping device 4 can e.g. comprise a knife or another special chopping device, preferably with a sharp edge to facilitate chopping of thin, tough items such as e.g. fibres or toothpicks.
- the relative to the waste disposal unit housing 10 fixed chopping device 4 is attached to a ridge 38 arranged in the lower part 32 of the waste disposal unit housing 10 where the purpose of the ridge 38 is to guide the flow of water and organic material in the direction of the outlet 40.
- the bottom of the inside of the waste disposal unit housing 10 can also be arranged inclined in the direction of the outlet 40.
- Figure 2 shows schematically sectional view of a preferably by a motor 1 driven waste disposal unit according to figure 1 where the waste disposal unit 2 comprises a chopping device 4, a fixed shredder 6, and a rotating shredder 12 in the form of a disk.
- the rotating shredder 12 is arranged inside the waste disposal unit housing 10 in connection with the fixed shredder 6.
- Protruding ridges 14, 15 are arranged on the inside of the fixed shredder 6 and further protruding ridges 16, 18 are arranged on the rotating shredder 12.
- Openings 20, 22, 24 are arranged in the rotating shredder 12 and spaces 26 are arranged between the rotating shredder 12 and the fixed shredder 6 so that the organic material, when it is sufficiently finely shredded, can pass together with the water there through and further on into the waste disposal unit 2 and from there into the waste system 28.
- the relative to the waste disposal unit housing 10 fixed chopping device 4 closes the openings 20, 22, 24 in the rotating shredder 12 each time said openings 20, 22, 24 in the rotating shredder 12 pass the relative to the waste disposal unit housing 10 fixed chopping device 4 and thereby chops off all the thin parts such as fibres or similar which, at the said moment of passage, protrude downwards from the relevant opening 20, 22, 24.
- thin, tough parts are finely shredded by that they are chopped off as they pass through said openings 20, 22,24.
- FIG. 3 shows schematically an exploded view of an embodiment of a chopping device 4 according to the invention.
- the chopping device comprises according to this embodiment a support member 42 preferably in the form of a first hard metal disc that is resiliently mounted to said ridge arranged in the lower part of the waste disposal unit housing with the help of fastening members 44, 46 in the form of pins.
- resilient members 48, 50 are arranged in the form of spring elements.
- a chopping member 52 preferably in the form of a further disk 52, for example a carbide disk or a disk of hard metal, is attached to said hard metal disk 42 with the help of e.g.
- This second disk 52 is arranged to lie resiliently against the underside of the rotating shredder and thereby, when the rotating shredder rotates, to close the openings in the rotating shredder each time said openings in the rotating shredder pass the relative to the waste disposal unit housing fixed chopping device.
- all the thin parts such as fibres or similar which at the said moment of passing are situated below and next to the relevant opening are chopped off by the second disk 52 in cooperation with the edges of the relevant opening.
- the thin tough parts are finely shredded by that they are chopped off when they pass through said openings.
- the disk 42 which is attached to the ridge in the waste disposal unit housing is provided with a notch 54.
- this disk 42 breaks in two when overloaded, for example if a body such as a nail or rigid steel wire which body, because of its toughness or strength cannot be chopped into pieces by the chopping device, passes an opening in the rotating shredder.
- the disk 42 which is relatively cheap and easy to replace, is broken in two, other parts of the waste disposal unit 2 such as e.g. the motor and shafts of the waste disposal unit and the rotating shredder are protected from being damaged.
- FIG 4 shows schematically an exploded view of a waste disposal unit 2 with a spring- loaded rotating shredder 12.
- the waste disposal unit shown in figure 4 differsfrom the one shown in figure 1 only in that the rotating shredder 12 according to the figure 4 embodiment is spring loaded by that a spring 56 is arranged to press the rotating shredder 12 against the fixed shredder 6, i.e. in this case against the upper part 8 of the waste disposal unit housing 10.
- a spring 56 is arranged to press the rotating shredder 12 against the fixed shredder 6, i.e. in this case against the upper part 8 of the waste disposal unit housing 10.
- This is achieved by that the rotating shredder 12 is fixed in the rotary direction but movably arranged in the axial direction A on a driving shaft 58 which preferably is driven by a motor 1.
- the fixing in the rotary direction can be done in a known manner for example with a sp lined joint between shaft 58 and attachment 60 for the rotating shredder 12.
- the spring 56 is preferably arranged between the drive shaft 58 and the attachment 60 for the rotating shredder 12.
- the rotating shredder 12 is movably mounted in the axial direction of the waste disposal unit housing 10 and that the spring 56 is arranged to press the rotating shredder 12 against the fixed shredder 6, said chopping function between said protruding lip 34, 36 on the rotating shredder 12 and said protruding ridge 14, 15 on the fixed shredder 6 is maintained despite wear of said protruding lip 34, 36 and/or protruding ridge 14, 15 as the distance between the rotating shredder 12 and the fixed shredder 6 does not increase when they become worn during use.
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention relates to a chopping device for waste disposal unit (2), where the waste disposal unit (2) comprises a inside a waste disposal unit housing (10) arranged rotating shredder (12) provided with at least one opening (20, 22, 24) which opening (20, 22, 24) is intended for passage of at least water, and where the chopping device (4) is fixed relative to the waste disposal unit housing (10) and arranged when the rotating shredder (12) rotates to close said opening (20, 22, 24) in the rotating shredder (12) each time said opening (20, 22, 24) in the rotating shredder (12) passes the relative to the waste disposal unit housing (10) fixed chopping device (4) whereby also thin tough parts are finely shredded by that they are chopped off when they pass through said opening (20, 22, 24).
Description
CHOPPING DEVICE
Technical area
The present invention relates to a chopping device for a waste disposal unit.
Background
It is known to arrange waste disposal units for example under an outlet from a sink or similar in an industrial kitchen, for example in a restaurant or onboard a ship, or in a normal household kitchen for the purpose of finely shredding organic material such as discarded vegetables etc. The organic material follows the water from the sink down into the disposal unit where it is finely shredded so that it does not block pumps or other devices situated further away in the waste system. The finely- shredded material improves the efficiency of the degrading processes at purifying plants, i.e. that the release of undesirable material from purifying plants into lakes and seas is reduced.
A waste disposal unit according to the above is usually constructed with a waste disposal unit housing and a inside the waste disposal unit housing arranged rotating shredder in the form of a rotating disk. When water and organic material passes from above into the waste disposal unit housing, the material is ground or shredded between protruding ridges on the inside of a fixed shredder arranged in the waste disposal unit housing and protruding ridges arranged on the rotating shredder. When the organic material has been sufficiently finely shredded it passes together with the water through openings in the rotating shredder and through spaces between the rotating shredder and the fixed shredder further into the waste disposal unit and from there into the waste system.
A problem with earlier waste disposal units of the type mentioned above is that they cannot finely shred thin, tough parts of material such as threads, fibres or wetted toothpicks, but these tough parts continue further into the waste disposal unit through the small openings that are intended for the by the waste disposal unit finely shredded material and accumulates around shafts thereby causing the waste disposal unit to stop.
US 2004/0173697 Al shows a waste disposal unit where knives are arranged to chop fibres that pass between a fixed shredder and a rotating shredder. Further is shown a on
the rotating shredder arranged rotating chopping device that chops fibres which pass through holes in the rotating shredder.
A problem with waste disposal units with chopping devices of the type shown in US 2004/0173697 Al is that the rotating chopping device and thereby also the rotating shredder is technically complex and expensive to manufacture and maintain e.g. in the event of a functional breakdown in the rotating chopping device since the rotating chopping device arranged on the rotating shredder has a number of moving parts. Furthermore, a number of rotating chopping devices have to be arranged on the rotating shredder in order to chop off fibres that pass through all the holes that are arranged in the rotating shredder since a rotating chopping device reaches only some of all these holes.
Brief description of the invention
The problem with that the rotating chopping device and thereby also the rotating shredder is technically complex and expensive to manufacture and maintain is solved according to the invention by arranging a chopping device according to claim 1.
By that the chopping device comprises the features in claim 1, the advantage of providing a chopping device and a rotating shredder that are simple in design is achieved which enables lower costs during manufacture and maintenance. Furthermore the advantage of that moving parts in addition to the moving shredder are avoided is achieved which reduces the risk of functional breakdown.
Brief description of the drawings
The invention will be described in more detail in the following with reference to the attached drawings where the same reference numerals are used for similar parts and wherein:
Figure 1 shows schematically an exploded view of a waste disposal unit with a chopping device according to a first embodiment of the invention,
Figure 2 shows schematically a cross section of a waste disposal unit according to figure 1,
Figure 3 shows schematically an exploded view of an embodiment of a chopping device according to the invention, and
Figure 4 shows schematically an exploded view of a waste disposal unit with a spring- loaded rotating shredder.
Description of preferred embodiments
Figure 1 shows schematically an exploded view of a, preferably by a motor 1 driven, waste disposal unit 2, with a chopping device 4 according to a first embodiment of the invention, where the waste disposal unit 2 preferably comprises a fixed shredder 6, i.e. in this case the upper part 8 of the waste disposal unit housing 10. The waste disposal unit 2 comprises a rotating shredder 12 in the form of a disk. The rotating shredder 12 is arranged inside the waste disposal unit housing 10 adjacent to the fixed shredder 6. When water and organic material pass, in this case from above by gravity, into the waste disposal unit housing 10, the material is ground or shredded between two protruding ridges 14, 15 on the inside of the fixed shredder 6 and protruding ridges 16, 18 arranged on the rotating shredder 12. When the organic material is sufficiently finely shredded it passes together with the water through openings 20, 22, 24 in the rotating shredder 12 and through spaces 26 between the rotating shredder 12 and the fixed shredder 6, i.e. in this case the upper part 8 of the waste disposal unit housing 10, and then further into the waste disposal unit 2 and from there out into the waste system 28. Alternatively water and organic material can be made to pass into the waste disposal unit housing 10 with the help of a pump or vacuum.
Under the openings 20, 22, 24 in the above mentioned rotating shredder 12, are according to the invention arranged a relative to the waste disposal unit housing 10 fixed chopping device 4 which in this embodiment is fixed to the lower part 32 of the waste disposal unit housing 10. When the rotating shredder 12 rotates, the relative to the waste disposal unit housing fixed chopping device 4 closes openings 20, 22, 24 in the rotating shredder 12 each time said openings 20, 22, 24 in the rotating shredder 12 pass the relative to the waste disposal unit housing 10 fixed chopping device 4 and thereby chops off all the thin parts such as fibres or similar which, in said moment of passage, protrude downwards from the relevant opening 20, 22, 24. Thus also the thin, tough parts are finely shredded
by that they are chopped off as they pass through said openings 20, 22, 24.
According to a further embodiment of the invention, the rotating shredder 12 is provided with one or several protruding lips 34, 36 that move in a plane under the one or several protruding ridges 14, 15 on the inside of the fixed shredder 6 and "closes" the space 26 between the rotating shredder 12 and the fixed shredder 6 by that they lie close to the wall of the fixed shredder 6. As the rotating shredder 12 moves in relation to the fixed shredder 6, said protruding lips 34, 36, 1 cooperation with the protruding ridges 14, 15 on the fixed shredder 6, chop off all the thin parts that are situated in said space 26 and between two protruding ridges 14, 15 on the inside of the fixed shredder 6 when said protruding lips 34, 36 pass said protruding ridges 14, 15.
The relative to the waste disposal unit housing 10 fixed chopping device 4 can e.g. be removably, and even possibly resiliently fixed relative to the waste disposal unit housing 10 with the help of e.g. a screw joint, a rivet joint or a bayonet mount. The relative to the disposal unit housing 10 fixed chopping device 4 can alternatively be non-removably fixed relative to the disposal unit housing 10 with the help of e.g. a weld joint, a glue joint or a mechanical joint. The relative to the waste disposal unit housing 10 fixed chopping device 4 can be fixed in one of the above ways directly in the waste disposal unit housing 10 or to another relative to the disposal unit housing 10 fixed unit.
The relative to the disposal unit housing 10 fixed chopping device 4 can e.g. comprise a knife or another special chopping device, preferably with a sharp edge to facilitate chopping of thin, tough items such as e.g. fibres or toothpicks.
According to the embodiment shown in figure 1, the relative to the waste disposal unit housing 10 fixed chopping device 4 is attached to a ridge 38 arranged in the lower part 32 of the waste disposal unit housing 10 where the purpose of the ridge 38 is to guide the flow of water and organic material in the direction of the outlet 40. To facilitate the outward flow, the bottom of the inside of the waste disposal unit housing 10 can also be arranged inclined in the direction of the outlet 40.
Figure 2 shows schematically sectional view of a preferably by a motor 1 driven waste disposal unit according to figure 1 where the waste disposal unit 2 comprises a chopping device 4, a fixed shredder 6, and a rotating shredder 12 in the form of a disk. The rotating
shredder 12 is arranged inside the waste disposal unit housing 10 in connection with the fixed shredder 6. Protruding ridges 14, 15 are arranged on the inside of the fixed shredder 6 and further protruding ridges 16, 18 are arranged on the rotating shredder 12. Openings 20, 22, 24 are arranged in the rotating shredder 12 and spaces 26 are arranged between the rotating shredder 12 and the fixed shredder 6 so that the organic material, when it is sufficiently finely shredded, can pass together with the water there through and further on into the waste disposal unit 2 and from there into the waste system 28. Under the openings 20, 22, 24 in the above mentioned rotating shredder 12 there is arranged a relative to the waste disposal unit housing 10 fixed chopping device 4. When the rotating shredder 12 rotates, the relative to the waste disposal unit housing 10 fixed chopping device 4 closes the openings 20, 22, 24 in the rotating shredder 12 each time said openings 20, 22, 24 in the rotating shredder 12 pass the relative to the waste disposal unit housing 10 fixed chopping device 4 and thereby chops off all the thin parts such as fibres or similar which, at the said moment of passage, protrude downwards from the relevant opening 20, 22, 24. Thus, also thin, tough parts are finely shredded by that they are chopped off as they pass through said openings 20, 22,24.
Figure 3 shows schematically an exploded view of an embodiment of a chopping device 4 according to the invention. The chopping device comprises according to this embodiment a support member 42 preferably in the form of a first hard metal disc that is resiliently mounted to said ridge arranged in the lower part of the waste disposal unit housing with the help of fastening members 44, 46 in the form of pins. Around the fastening members 44, 46 and between the ridge and the hard metal disk 42, resilient members 48, 50 are arranged in the form of spring elements. Furthermore, a chopping member 52, preferably in the form of a further disk 52, for example a carbide disk or a disk of hard metal, is attached to said hard metal disk 42 with the help of e.g. a weld joint, solder joint, screw joint, riveted joint or similar. This second disk 52 is arranged to lie resiliently against the underside of the rotating shredder and thereby, when the rotating shredder rotates, to close the openings in the rotating shredder each time said openings in the rotating shredder pass the relative to the waste disposal unit housing fixed chopping device. Thereby all the thin parts such as fibres or similar which at the said moment of passing are situated below and next to the relevant opening are chopped off by the second disk 52 in cooperation with the edges of the relevant opening. Thus, also the thin tough parts are finely shredded by that they are chopped off when they pass through said openings. As further can be seen from figure 3, the disk 42, which is attached to the ridge in the waste disposal unit housing is
provided with a notch 54. Thereby this disk 42 breaks in two when overloaded, for example if a body such as a nail or rigid steel wire which body, because of its toughness or strength cannot be chopped into pieces by the chopping device, passes an opening in the rotating shredder. By that the disk 42, which is relatively cheap and easy to replace, is broken in two, other parts of the waste disposal unit 2 such as e.g. the motor and shafts of the waste disposal unit and the rotating shredder are protected from being damaged.
Figure 4 shows schematically an exploded view of a waste disposal unit 2 with a spring- loaded rotating shredder 12. The waste disposal unit shown in figure 4 differsfrom the one shown in figure 1 only in that the rotating shredder 12 according to the figure 4 embodiment is spring loaded by that a spring 56 is arranged to press the rotating shredder 12 against the fixed shredder 6, i.e. in this case against the upper part 8 of the waste disposal unit housing 10. This is achieved by that the rotating shredder 12 is fixed in the rotary direction but movably arranged in the axial direction A on a driving shaft 58 which preferably is driven by a motor 1. The fixing in the rotary direction can be done in a known manner for example with a sp lined joint between shaft 58 and attachment 60 for the rotating shredder 12. The spring 56 is preferably arranged between the drive shaft 58 and the attachment 60 for the rotating shredder 12. By that the rotating shredder 12 is movably mounted in the axial direction of the waste disposal unit housing 10 and that the spring 56 is arranged to press the rotating shredder 12 against the fixed shredder 6, said chopping function between said protruding lip 34, 36 on the rotating shredder 12 and said protruding ridge 14, 15 on the fixed shredder 6 is maintained despite wear of said protruding lip 34, 36 and/or protruding ridge 14, 15 as the distance between the rotating shredder 12 and the fixed shredder 6 does not increase when they become worn during use.
Claims
1. Chopping device for a waste disposal unit (2), where the waste disposal unit (2) comprises a inside a waste disposal unit housing (10) arranged rotating shredder (12) provided with at least one opening (20, 22, 24) which opening (20, 22, 24) is intended for passage of at least water, characterized in that, the chopping device (4) is fixed relative to the waste disposal unit housing (10) and arranged to when the rotating shredder (12) rotates to close said opening (20, 22, 24) in the rotating shredder (12) each time said opening (20, 22, 24) in the rotating shredder (12) passes the relative to the waste disposal unit housing (10) fixed chopping device (4) whereby the parts that pass through said opening (20, 22, 24) in the rotating shredder (12) are chopped off.
2. Chopping device for a waste disposal unit (2) according to claim 1, characterized in that, the chopping device comprises a chopping member (52) which is arranged to lie against the underside of the rotating shredder (12).
3. Chopping device for a waste disposal unit (2) according to claim 2, characterized in that, the chopping member is a disk (52).
4. Chopping device for a waste disposal unit (2) according to claim 3, characterized in that, the chopping member (52) is a carbide disk or a disk of hard metal.
5. Chopping device for a waste disposal unit (2) according to one of claims 2 to 4, characterized in that, the chopping member (52) arranged to lie against the underside of the rotating shredder (12) is fixed in its position by a support member (42).
6. Chopping device for a waste disposal unit (2) according to claim 5, characterized in that, the support member (42) is a hard metal disk.
7. Chopping device for a waste disposal unit (2) according to one of the claims 5 or 6, characterized in that, the support member (42) is provided with a notch (54) so that the support member (42) is broken in two in the event of overloading whereby other parts of the waste disposal unit (2) are protected against damage.
8. Chopping device for a waste disposal unit (2) according to one of claims 5 to 7, characterized in that, the support member (42) is fixed relative to the waste disposal unit housing (10) with the help of fastening members (44, 46) where around the fastening members (44, 46) are arranged resilient members (48, 50).
9. Chopping device for a waste disposal unit (2) according to one of the patent claims 1 to 8, characterized in that, the chopping device (4) is removably fixed relative to the waste disposal unit housing (10).
10. Chopping device for a waste disposal unit (2) according to one of claims 1 to 7, characterized in that, the chopping device (4) is resiliently fixed relative to the waste disposal unit housing (10).
11. Chopping device for a waste disposal unit (2) according to one of the claims 1 to 8, characterized in that, the chopping device (4) is non-removably fixed relative to the waste disposal unit housing (10).
12. Chopping device for a waste disposal unit (2) according to one of the claims 1 to 11, characterized in that, the chopping device (4) is fixed to a ridge (38) arranged in the lower part (32) of the waste disposal unit housing (10).
13. Waste disposal unit, characterized in that, it comprises a chopping device (4) according to any of the above claims.
14. Waste disposal unit according to claim 13, characterized in that, the waste disposal unit (2) includes a fixed shredder (6) and a rotating shredder (12) where the rotating shredder (12) is provided with at least one protruding lip (34, 36) which is arranged to move in a plane under at least one protruding ridge (14, 15) on the inside of the fixed shredder (6) and where furthermore said protruding lip (34, 36) of the rotating shredder (12) is arranged in cooperation with said protruding ridge (14, 15) of the fixed shredder (6) to chop off the parts that are situated in a space (38) between said fixed shredder (6) and rotating shredder (12) when said protruding lip (34, 36) on the rotating shredder passes said protruding ridge (14, 15) of the fixed shredder (6).
15. Waste disposal unit according to claim 14, characterized in that, the rotating shredder (12) is movably mounted in the axial direction (A) of the waste disposal unit housing (10) and that a spring (56) is arranged to press the rotating shredder (12) against the fixed shredder (6) whereby said chopping function between said protruding lip (34, 36) of the rotating shredder (12) and said protruding ridge (14, 15) of the fixed shredder (6) is maintained despite wear of said protruding lip (34, 36), and/or said protruding ridge (14, 15).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0601306-4 | 2006-06-14 | ||
| SE0601306A SE0601306L (en) | 2006-06-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2007145575A1 true WO2007145575A1 (en) | 2007-12-21 |
| WO2007145575A8 WO2007145575A8 (en) | 2008-07-31 |
Family
ID=38831998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/SE2007/000580 WO2007145575A1 (en) | 2006-06-14 | 2007-06-13 | Chopping device |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2007145575A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB746659A (en) * | 1953-11-27 | 1956-03-14 | Gen Electric | Improvements in and relating to waste disposal apparatus |
| US20040173697A1 (en) * | 2003-03-07 | 2004-09-09 | Emerson Electric Co. | Food waste reduction mechanism for disposer |
-
2007
- 2007-06-13 WO PCT/SE2007/000580 patent/WO2007145575A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB746659A (en) * | 1953-11-27 | 1956-03-14 | Gen Electric | Improvements in and relating to waste disposal apparatus |
| US20040173697A1 (en) * | 2003-03-07 | 2004-09-09 | Emerson Electric Co. | Food waste reduction mechanism for disposer |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007145575A8 (en) | 2008-07-31 |
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