TH35140A - A washing machine with a direct drive mechanism for the rotating drum and blender. - Google Patents

Abstract

DC60 (29/09/40) A fully automatic washing machine will have an outer water tank, a rotating drum installed for rotation in the outer water tank, a spinner installed for rotation in the rotating drum, a brushless motor to directly drive the spinner or the rotating drum, and a spinner and Hall IC to detect the rotation position of the brushless motor rotor, which generates a position signal. A sine wave power signal is generated based on the position signal generated by the Hall IC. The brushless motor is powered based on the power signal generated. A fully automatic washing machine will have an outer water tank, a rotating drum installed for rotation in the outer water tank, a spinner installed for rotation in the rotating drum, a brushless motor to directly drive the spinner or the rotating drum, and a spinner and Hall IC to detect the rotation position of the brushless motor rotor, which generates a position signal. A sine wave power signal is generated based on the position signal generated by the Hall IC. The brushless motor is powered based on the power signal generated.

Claims (24)

1. A washing machine consists of the following components: an outer water tank, a rotating drum mounted inside the outer water tank, a spinner mounted inside the rotating drum, and a brushless motor for directly driving the rotating drum or at least one spinner. The brushless motor, including the rotor and windings with induced voltage, produces a sine wave waveform. A rotor position sensing mechanism detects the rotational position of the brushless motor's rotor, generating a position signal. A power signal generation mechanism generates a true sine wave power signal based on the position signal generated by the rotor position sensing mechanism. Finally, a motor power generation mechanism powers the brushless motor based on the power signal generated by the power signal generation mechanism. 2. The washing machine, as per claim 1, further comprises: an electrical angle sensing mechanism for detecting the electrical angle of the rotor based on a position signal generated by the rotor position sensing mechanism; a storage mechanism for storing the power waveform data based on the rotor electrical angle; a phase command generation mechanism for generating phase commands; and a voltage command generation mechanism for generating voltage commands. There, the power signal generation mechanism reads the power waveform corresponding to the electrical angle of the rotor detected by the storage mechanism, which in turn generates a power signal. There, the power signal generation mechanism determines the electrical angle of the power waveform based on the electrical angle detected by the electrical angle sensing mechanism and the phase command generated by the phase command generation mechanism. In this regard, the power signal generation mechanism generates a power signal corresponding to the determined electrical angle based on the power waveform data read from the storage mechanism and the voltage command generated by the voltage command generation mechanism. 3. The washing machine, as per claim 1, further comprises: an electrical angle sensing mechanism for detecting the electrical angle of the rotor, depending on the position signal generated by the rotor position sensing mechanism; a storage mechanism for storing the power waveform data based on the rotor electrical angle; a phase command generation mechanism for generating phase commands; a voltage command generation mechanism for generating voltage commands; and a voltage sensing mechanism for detecting the DC power supply voltage. The power signal generation mechanism reads the power waveform corresponding to the rotor electrical angle detected by the electrical angle sensing mechanism from the storage mechanism, which in turn generates a power signal. The power signal generation mechanism then determines the electrical angle of the power waveform, depending on the electrical angle detected by the electrical angle sensing mechanism and the phase command generated by the phase command generation mechanism. This in turn generates a power signal corresponding to the determined electrical angle based on the power waveform data read from the storage mechanism and the voltage command generated by the voltage command generation mechanism, and the DC power supply voltage generated by the voltage sensing mechanism. 4. The washing machine according to claim 1, which further comprises an electrical angle sensing mechanism for detecting the electrical angle of the rotor, depending on the position signal generated by the rotor position sensing mechanism, and a storage mechanism for storing data of the power waveform, a sine wave corresponding to the electrical angle of the rotor, and where the power signal generation mechanism reads the power waveform corresponding to the electrical angle of the rotor detected by the storage mechanism, which in turn generates a power signal. 5. Washing machine, according to claim 2 or 3, where the energy waveform containing stored information is a true sine wave stored by a mechanism. 6. The washing machine under claim 1, which further comprises an electrical angle sensing mechanism for detecting the electrical angle of the rotor, depending on the position signal generated by the rotor position sensing mechanism, and a storage mechanism for storing data of the power waveform, a sine wave corresponding to the electrical angle of the rotor, where the brushless motor has a number of phases, and the power signal generation mechanism reads the power waveform data corresponding to the electrical angle of the rotor detected by the electrical angle sensing mechanism from the storage mechanism, which in turn generates a power signal. The power signal generation mechanism generates a power signal for the washing operation, so that the brushless motor is powered, and the current flowing in each phase winding of the brushless motor is in phase with the voltage induced in each phase winding of the brushless motor. 7. Washing machine. Under any one of the claims 1, 2, and 3, the brushless motor is a multiphase motor, and the power signaling mechanism generates a power signal to operate the washing cycle, so that the brushless motor is powered, that the current flowing through each phase winding of the brushless motor is in phase with the voltage induced in each phase winding of the brushless motor. 8. Washing machine, according to claim 6 or 7, which still includes another storage mechanism for storing data of all washing operation patterns, including the corresponding phase command patterns, and in which the power signaling mechanism selects the phase command pattern simultaneously with the selection of the washing operation pattern so that the brushless motor is powered, so that the current flowing in each phase winding of the brushless motor is in phase with the voltage induced in each phase winding of the brushless motor. 9. The washing machine under claim 1, which further comprises an electrical angle sensing mechanism for detecting the electrical angle of the rotor, depending on the position signal generated by the rotor position sensing mechanism, and a storage mechanism for storing data of the power waveform, a sine wave corresponding to the electrical angle of the rotor, where the brushless motor has a number of phases, and the power signal generation mechanism reads the power waveform data corresponding to the electrical angle of the rotor detected by the electrical angle sensing mechanism from the storage mechanism, which in turn generates a power signal. The power signal generation mechanism generates a power signal for the spin cycle operation, so that the brushless motor is energized, and the current flowing in each phase winding of the brushless motor leads to the induced voltage in each phase winding of the brushless motor. 10. Washing machine. Under any one of the claims 1, 2, or 3, the brushless motor is a multiphase motor, and the power-to-signal mechanism generates a power signal for the spin cycle operation, causing the brushless motor to introduce induced voltage into each phase winding of the brushless motor. 11. Washing machine, according to claim 9 or 10, which still includes another storage mechanism for storing data of the spin-off operation patterns, as well as the corresponding phase command patterns, and in which the power signaling mechanism selects the phase command pattern, simultaneously with the selection of the spin-off operation pattern, so that the brushless motor is powered, causing the current flowing in each phase winding of the brushless motor to induce a voltage in each phase winding of the brushless motor. 12. The washing machine according to claim 1, which further comprises an electrical angle sensing mechanism for detecting the electrical angle of the rotor, depending on the position signal generated by the rotor position sensing mechanism, and a storage mechanism for storing data of the power waveform, a sine wave corresponding to the electrical angle of the rotor, where the brushless motor has a number of phases, and the power signal generation mechanism reads the power waveform data corresponding to the detected electrical angle of the rotor. The electrical angle of the rotor detected by the electrical angle sensing mechanism is read from the storage mechanism, which in turn generates a power signal. The power signal generation mechanism generates a power signal for the stop operation, so that the brushless motor is energized, and the current flowing in each phase winding of the brushless motor is behind the voltage induced in each phase winding of the brushless motor. 13. Washing machine. Under any one of the claims 1, 2, or 3, the brushless motor is a multiphase motor, and the power signaling mechanism generates a power signal for the operating/stopping operation so that the brushless motor is energized, and the current flowing in each phase winding of the brushless motor is behind the voltage induced in each phase winding of the brushless motor. 14. Washing machine, according to claim 1, which further comprises an electrical angle sensing mechanism for detecting the electrical angle of the rotor, depending on the position signal generated by the rotor position sensing mechanism, the electrical angle sensing mechanism, the electrical rotor angle sensing mechanism for a time shorter than the change time of the position signal generated by the rotor position sensing mechanism, and a storage mechanism for storing data of the sine wave power waveform corresponding to the electrical angle of the rotor, and where the rotor position sensing mechanism generates a signal in the form of a position signal which has a predetermined phase relationship to the voltage induced in the winding set or each phase winding of the brushless motor, and where the power signal generation mechanism reads the power waveform corresponding to the electrical angle of the rotor detected by the electrical angle sensing mechanism from the storage mechanism, which in turn generates a power signal. 15. Washing machine. Under any one of claims 2, 3, 8 and 11, the rotor position sensing mechanism generates a position signal which has a predetermined phase relationship to the voltage induced in the winding set or each phase winding of the brushless motor, and the electrical angle sensing mechanism detects the electrical angle of the rotor for a period of time shorter than the change time of the position signal generated by the rotor position sensing mechanism. 16. Washing machine, pursuant to claim 14 or 15, whereby the electrical angle sensing mechanism shall consist of a signal generation mechanism which multiplies the position signal generated by the rotor position sensing mechanism and a counting mechanism which counts the multiplied signal generated by the signal generation mechanism, including a first counting circuit that counts a predetermined number of clock signals to measure the time interval change of that position signal, and a second counting circuit that counts clock signals which are N times greater than the predetermined number of clock signals, depending on the result of the measurement of the time interval change of the position signal. 17. Washing machine, according to claim 16, which still contains a spin time detection mechanism for detecting the spin time per rotation of the brushless motor, and in which a multiplied signal generation mechanism changes the multiplier of the multiplied signal depending on the spin time detected by the spin time detection mechanism. 18. Washing machine, pursuant to claim 16, which still includes a rotational stabilization mechanism for determining the rotational stability of the brushless motor, where the electrical angle sensing mechanism includes an electrical angle data operation mechanism to obtain rotor electrical angle data corresponding to position signal variations, operated based on the results obtained from the number of measurements performed by the first counting circuit, when the rotational stabilization mechanism determines that the motor rotation is stable, and which also includes a storage mechanism for storing data of the results of operations performed by the electrical angle data operation mechanism and a mechanism for evaluating the rotor position in a time shorter than the position signal variation time measured by the first counting circuit, based on the electrical angle data stored by the storage mechanism. 19. Washing machine, pursuant to claim 16, which continues to include a rotational stabilization mechanism for determining the rotational stability of the brushless motor, whereby an electrical angle data operating mechanism is used to obtain rotor electrical angle data corresponding to position signal variations by operation, depending on the results of the number of measurements performed by the first counting cycle, when the rotational stabilization mechanism determines that the motor rotation is stable, and which also includes a storage mechanism for storing the results of the operations performed by the electrical angle data operating mechanism and a mechanism for compensating the results of the measurements of the first counting cycle, depending on the electrical angle data stored by the storage mechanism. 20. Washing machine, pursuant to claim 18 or 19, whereby when the spin time detected by the continuous spin time detection mechanism is within a predetermined range, the spin stabilization mechanism determines that the spin is stable. 21. Washing machine, according to claim 1, which further comprises an electrical angle sensing mechanism for detecting the electrical angle of the rotor depending on the position signal generated by the rotor position sensing mechanism; a storage mechanism for storing the data of the power waveform, a sine wave corresponding to the electrical angle of the rotor; and a switching mechanism for switching the voltage applied to the brushed motor between a rectangular wave voltage generated by the logical operation of the position signal generated by the rotor position sensing mechanism, a rectangular wave voltage applied to the brushless motor to start the brushless motor, and a voltage depending on the power signal generated by the power signal generator mechanism and applied to the brushless motor for starting it, where the power signal generator mechanism reads the power waveform corresponding to the electrical angle of the rotor detected by the electrical angle sensing mechanism from the storage mechanism, which in turn generates the power signal. 22. Any washing machine under any of the claims 1, 2, 3, 8 and 11 which still contains a switching mechanism for switching the voltage supplied to the brushless motor between a rectangular waveform voltage generated by the logical operation of a position signal generated by the rotor position sensing mechanism, a rectangular waveform voltage supplied to the brushless motor to start the brushless motor, and a voltage dependent on a power signal generated by the power signal generation mechanism and supplied to the brushless motor for starting the brushless motor. 23. The washing machine according to claim 1, which further comprises an electrical angle sensing mechanism for detecting the electrical angle of the rotor, depending on the position signal generated by the rotor position sensing mechanism, and a storage mechanism for storing the energy waveform data according to the electrical angle of the rotor, and where the energy signal generation mechanism reads the energy waveform data corresponding to the electrical angle of the rotor detected by the storage mechanism, which in turn generates an energy signal, and where the electrical angle sensing mechanism, the storage mechanism, and the energy signal generation mechanism make up a single microcomputer chip. 24. Washing machine, pursuant to any one of claims 2, 3, 6 and 8, where the electrical angle detection mechanism, the energy storage mechanism and the energy signaling mechanism are incorporated into a single microcomputer chip.