US6384558B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Driving device for motor-driven compressor
Assignee: Panasonic Holdings Corp
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Filing: 2000-12-12
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Granted: 2002-05-07
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Expires: 2020-12-12
Abstract
Abstract A driving device for a motor-driven compressor including: (a) a motor-driven compressor for compressing a refrigerant; (b) a DC power supply serving as a power source of the compressor; (c) a capacitor connected in parallel with the DC power supply; (d) a switch provided between the DC power supply and the capacitor, and closed when the compressor is operated and opened when the compressor is stopped; (e) a driver for converting electric power supplied from the DC power supply via the switch and capacitor into driving power for the compressor, and for outputting the driving power thereto; (f) a controller for instructing the driver to operate or stop the compressor; and (g) a discharge control unit provided in the driver and controlling the driver so that the capacitor is discharged using the compressor as a medium, after the instruction to stop the compressor has been given.
Inventors
- 👤 Makoto Yoshida
- 👤 Nobuyuki Nishii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:55
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02H; H02H7/00; H02H7/08; H02H7/0833; H02M1/00; H02M1/32; H02M1/322
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
166 words
A driving device for a motor-driven compressor including: (a) a motor-driven compressor for compressing a refrigerant; (b) a DC power supply serving as a power source of said motor-driven compressor; (c) a capacitor connected in parallel with said DC power supply; (d) a switch provided between said DC power supply and said capacitor, and closed when said motor-driven compressor is operated and opened when said compressor is stopped; (e) a driver for converting electric power supplied from said DC power supply via said switch and said capacitor into driving power for said motor-driven compressor, and for outputting the driving power to said motor-driven compressor; (f) a controller for giving said driver one of an instruction to operate and an instruction to stop said motor-driven compressor; and (g) a discharge control unit provided in said driver and controlling said driver so that electric charge of said capacitor is discharged using said motor-driven compressor as a medium, after the instruction to stop said motor-driven compressor has been given.
Claim 2
Dependent Claim
166 words
A driving device for a motor-driven compressor including: (a) a motor-driven compressor for compressing a refrigerant; (b) a DC power supply serving as a power source of said motor-driven compressor; (c) a capacitor connected in parallel with said DC power supply; (d) a switch provided between said DC power supply and said capacitor, and closed when said motor-driven compressor is operated and opened when said compressor is stopped; (e) a driver for converting electric power supplied from said DC power supply via said switch and said capacitor into driving power for said motor-driven compressor, and for outputting the driving power to said motor-driven compressor; (f) a controller for giving said driver one of an instruction to operate and an instruction to stop said motor-driven compressor; and (g) a discharge control unit provided in said driver and controlling said driver so that electric charge of said capacitor is discharged using said motor-driven compressor as a medium, after the instruction to stop said motor-driven compressor has been given.
Claim 3
Dependent Claim
58 words
The driving device for a motor-driven compressor as described in claim 1 wherein said discharge control unit controls said driver so that the electric charge of said capacitor is discharged while energization from said driver to said motor-driven compressor is continued for a predetermined period of time, after the instruction to stop said motor-driven compressor has been given.
Claim 4
Dependent Claim
95 words
The driving device for a motor-driven compressor as described in claim 1 further including: a voltage detector unit for detecting any one of a voltage of said capacitor and voltages that vary with the voltage of said capacitor; and said discharge control unit for controlling said driver so that the electric charge of said capacitor is discharged while energization to said motor-driven compressor is continued until the voltage detected by said voltage detector unit decreases to a value not greater than a predetermined value, after the instruction to stop said motor-driven compressor has been given.
Claim 5
Dependent Claim
60 words
The driving device for a motor-driven compressor as described in claim 1 including: said discharge control unit for controlling the driver so that the electric charge of said capacitor is discharged while said motor-driven compressor is de-energized once and then re-energized after a predetermined period of time is elapsed, after the instruction to stop said motor-driven compressor has been given.
Claim 6
Dependent Claim
109 words
The driving device for a motor-driven compressor as described in claim 1 further including: a voltage detector unit for detecting any one of a voltage of said capacitor and voltages that vary with the voltage of said capacitor; and said discharge control unit for controlling said driver so that the electric charge of said capacitor is discharged while energization to said motor-driven compressor is stopped once and started again after a predetermined period of time, and is further continued until the voltage detected by said voltage detector unit decreases to a value not greater than a predetermined value, after the instruction to stop said motor-driven compressor has been given.
Claim 7
Dependent Claim
30 words
The driving device for a motor-driven compressor as described in claim 1 wherein said switch is composed of a charging circuit with a switching function for slowly charging said capacitor.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-05-06 | 2005-11-05 | 2006-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-05-06 | 2009-11-05 | 2010-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-05-06 | 2013-11-05 | 2014-05-07 | $7700.00 | Window Closed / Lapsed |