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An apparatus for monitoring the health of a compressor comprising at least one sensor operatively coupled to the compressor for monitoring at least one compressor parameter, a calibration system coupled to the at least one sensor, the calibration system performing time-series analysis on the monitor

An apparatus for monitoring the health of a compressor comprising at least one sensor operatively coupled to the compressor for monitoring at least one compressor parameter, a calibration system coupled to the at least one sensor, the calibration system performing time-series analysis on the monitored parameter, a processor system for processing and computing stall precursors from the time-series analyzed data, a comparator that compares the stall precursors with predetermined baseline data, and a controller operatively coupled to the comparator which initiates corrective actions to prevent a compressor surge and stall if the stall precursors deviate from the baseline data which represents predetermined level of compressor operability. The processor system preferably includes a frequency demodulator and a system for processing the frequency demodulated signals to extract stall precursor characteristics.

대표청구항 ▼

An apparatus for monitoring the health of a compressor comprising at least one sensor operatively coupled to the compressor for monitoring at least one compressor parameter, a calibration system coupled to the at least one sensor, the calibration system performing time-series analysis on the monitor

An apparatus for monitoring the health of a compressor comprising at least one sensor operatively coupled to the compressor for monitoring at least one compressor parameter, a calibration system coupled to the at least one sensor, the calibration system performing time-series analysis on the monitored parameter, a processor system for processing and computing stall precursors from the time-series analyzed data, a comparator that compares the stall precursors with predetermined baseline data, and a controller operatively coupled to the comparator which initiates corrective actions to prevent a compressor surge and stall if the stall precursors deviate from the baseline data which represents predetermined level of compressor operability. The processor system preferably includes a frequency demodulator and a system for processing the frequency demodulated signals to extract stall precursor characteristics. gement of claim 2 wherein said catch frame cord holding portion comprises: a first hook mounted on said catch frame; and, a second hook mounted on said catch frame in spaced relation to said first hook. 4. The arrangement of claim 1 wherein said catch frame further comprises: a first end which is pivotally mounted to said housing portion; and, a second end which comprises a catch member that cooperates with said latch assembly. 5. The arrangement of claim 1 wherein said latch assembly comprises: a hinge mounted to said housing portion; a cap secured to said hinge, said cap having an upper surface and a lower surface; and, a latch member located on said cap lower surface. 6. The arrangement of claim 5 wherein said latch assembly further comprises at least one indented section on said cap upper surface for accommodating an associated vacuum cleaner tool. 7. The arrangement of claim 5 wherein said latch assembly further comprises a first spring for biasing said cap to a first end position in relation to said housing portion. 8. The arrangement of claim 7 wherein said latch assembly further comprises a second spring for biasing said latch member to a first end position in relation to said cap. 9. The arrangement of claim 5 wherein said cap overlies an upper end of said dirt cup when said dirt cup is secured on said housing portion by a cooperation of said latch hook and said catch portion. 10. A latch arrangement for a vacuum cleaner having a dirt cup selectively mounted on a housing, comprising: a latch hook pivotally mounted on a lower surface of a latch frame pivotally mounted on said housing; and, a catch member located on a catch frame pivotally mounted to said housing in a spaced manner from said latch frame, wherein said latch hook and said catch member are so mounted on said housing that they can selectively hold the dirt cup on the housing of the vacuum cleaner. 11. The arrangement of claim 10 wherein said catch frame comprises an electrical cord holding portion. 12. The arrangement of claim 11 wherein said catch frame cord holding portion comprises: a first hook mounted on said frame; and, a second hook mounted on said frame in spaced relation to said first hook. 13. The arrangement of claim 12 wherein said catch frame further comprises: a first end which is pivotally mounted to said housing; and, a second end which comprises said catch portion. 14. The arrangement of claim 11 wherein said latch frame comprises a cap having an upper surface and a lower surface. 15. The arrangement of claim 14 wherein said latch frame cap further comprises at least one indented section on said cap upper surface for accommodating an associated vacuum cleaner tool. 16. The arrangement of claim 15 further comprising: a first spring for biasing said latch frame to a first end position in relation to said housing portion; and a second spring for biasing said latch hook to a first end position in relation to said cap. 17. The arrangement of claim 16 wherein said latch assembly further comprises a handle connected to said latch hook for manually manipulating said latch hook. 18. The arrangement of claim 15 wherein said latch frame cap overlies an upper end of said dirt cup when said dirt cup is secured on said housing by a cooperation of said latch hook and said catch portion. 41) has first and second opposed end orifices that are both open to permit passage of waste, the tubular filter is held in the space in such a manner that the first end orifice allows waste to pass from the first conduit via the first end orifice into the tubular filter, and the appliance further comprises a blocking member that is movable relative to the housing between a closed position for blocking the second end orifice and an open position to permit waste to be removed from the tubular filter via the second end orifice. 2. The electrical waste recovering appliance according to claim 1, further comprising means (3, 7, 17, 43) for maintaining the tubular filter spaced from the interior wall of the housing. 3. The electrical waste recovering appliance according to claim 2, wherein the means (3, 7, 17, 43) for maintaining the tubular filter spaced from the interior wall of the housing are fixed to the housing (14, 54). 4. The electrical waste recovering appliance according to claim 2, wherein the means (3, 7, 17, 43) for maintaining the tubular filter spaced from the interior wall (14, 54) of the housing are fixed to the tubular filter (1, 41). 5. The electrical waste recovering appliance according to claim 1, wherein the tubular filter (1, 41) has at least one joint (10, 34, 35, 47, 50) providing a pneumatic seal at one of its orifices (4, 6, 44, 46). 6. The electrical waste recovering appliance according to claim 1, wherein the tubular filter (1, 41) has a rigid zone (8, 32) impermeable to air, at each orifices. 7. The electrical waste recovering appliance according to claim 1, wherein the tubular filter (1, 41) has a rigid mechanical reinforcing structure (9, 27) for mechanical reinforcement along its length. 8. The electrical waste recovering appliance according to claim 1, wherein the blocking member comprises a trap door (18, 58). 9. The electrical waste recovering appliance according to claim 8, wherein the trap door (18, 58) is fixed to the housing (14, 54) thus closing said housing, said trap door (18, 58) opening toward the outside of the housing. 10. The electrical waste recovering appliance according to claim 8, wherein the trap door (18, 58) is fixed to the tubular filter (1, 41). 11. The electrical waste recovering appliance according to claim 1, wherein the tubular filter (1, 41) has a shutter (32), situated at the first end orifice (4, 44) for initial blocking of the first end orifice (4, 44), capable of being retracted by contact with an exterior object or by the low pressure created by the rotation of the suction turbine (22, 62), and returning to its initial blocking position when the interaction with the exterior object ceases or when the turbine (22, 62) is stopped. 12. The electrical waste recovering appliance according to claim 1, further comprising a sealing joint (10, 35, 50) disposed adjacent the second orifice end of the tubular filter, said joint having a groove (12b) capable of cooperating, in view of its positioning and its maintenance, with at least one positioning bulge (36) arranged in an interior part of the housing (14, 54).