Washing machine and method of controlling the same
First Claim
Patent Images
1. A washing machine, comprising:
- a disinfecting liquid dispenser supplying a disinfecting liquid to disinfect laundry;
a drive unit outputting first and second voltages to determine a concentration of the disinfecting liquid; and
a control unit detecting the concentration of the disinfecting liquid and controlling the drive unit so that the disinfecting liquid has a concentration within a preset range,wherein the drive unit receives first and second switching signals having opposite phases from the control unit, the drive unit comprising;
a first switching unit turned on in response to the pulse width modulation signal and outputting the first control voltage proportional to a duty ratio of the pulse width modulation signal when the first switching signal is at a preset voltage level, anda second switching unit turned on in response to the pulse width modulation signal and outputting the second control voltage proportional to the duty ratio of the pulse width modulation signal when the second switching signal is at the preset voltage level.
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Abstract
A disinfecting washing machine includes a disinfecting liquid dispenser, a drive unit and a control unit. The disinfecting liquid dispenser supplies a disinfecting liquid to disinfect laundry. The drive unit outputs first and second voltages to determine a concentration of the disinfecting liquid. The control unit detects the concentration of the disinfecting liquid and controlling the drive unit so that the disinfecting liquid has a concentration within a preset range.
37 Citations
25 Claims
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1. A washing machine, comprising:
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a disinfecting liquid dispenser supplying a disinfecting liquid to disinfect laundry; a drive unit outputting first and second voltages to determine a concentration of the disinfecting liquid; and a control unit detecting the concentration of the disinfecting liquid and controlling the drive unit so that the disinfecting liquid has a concentration within a preset range, wherein the drive unit receives first and second switching signals having opposite phases from the control unit, the drive unit comprising; a first switching unit turned on in response to the pulse width modulation signal and outputting the first control voltage proportional to a duty ratio of the pulse width modulation signal when the first switching signal is at a preset voltage level, and a second switching unit turned on in response to the pulse width modulation signal and outputting the second control voltage proportional to the duty ratio of the pulse width modulation signal when the second switching signal is at the preset voltage level. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A washing machine with a disinfecting liquid dispenser supplying a disinfecting liquid to disinfect laundry, and a drive unit generating the disinfecting liquid, comprising:
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a control unit detecting a concentration of the disinfecting liquid and controlling the drive unit so that the disinfecting liquid has a concentration of ions within a preset range, wherein the control unit controls the drive unit using a pulse width modulation signal, a first switching signal, and a second switching signal having an opposite phase from the first switching signal, so that the drive unit outputs a first control signal proportional to the pulse width modulation signal when the first switching signal is at a preset voltage level and a second control signal proportional to the pulse width modulation signal when the second switching signal is at the preset voltage level. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A disinfecting unit for a washing machine, comprising:
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a disinfecting liquid dispenser supplying a disinfecting liquid to laundry; a drive outputting voltages to determine a concentration of the disinfecting liquid; and a controller controlling the drive unit so that the disinfecting liquid has a concentration within a preset range; the disinfecting unit, further comprising; water contained in the disinfecting liquid dispenser; first and second silver plates provided in the water contained in the disinfecting liquid dispenser; and a drive circuit applying first and second voltages to the first and second silver plates, respectively, to carry out electrolysis, wherein the drive circuit comprises; a first switching unit turned on in response to a pulse width modulation signal and outputting a first control signal proportional to a duty ratio of the pulse width modulation signal when a first switching signal is at a preset voltage level, a second switching unit turned on in response to the pulse width modulation signal and outputting a second control signal proportional to the duty ratio of the pulse width modulation signal when the second switching signal is at the preset voltage level, and the first and second switching units, respectively, receive the first and second switching signals having opposite phases from the controller. - View Dependent Claims (16, 17)
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18. A method of disinfecting laundry for a washing machine, comprising:
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generating a disinfecting liquid by electrolysis; supplying the generated disinfecting liquid; detecting a concentration of ions in the disinfecting liquid; and controlling the concentration of the ions within a preset range, wherein the controlling comprises; outputting first and second control voltages in response to a pulse width modulation signal to change the concentration of the ions in the disinfecting liquid, the first and second control voltages being proportional to a duty ratio of the pulse width modulation signal, changing a pulse width of the pulse width modulation signal to change the concentration of the ions in the disinfecting liquid, repeatedly alternating phases of the first and second control voltages. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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Specification