WO2017005203A1 - 滚筒式洗衣机 - Google Patents

滚筒式洗衣机 Download PDF

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Publication number
WO2017005203A1
WO2017005203A1 PCT/CN2016/089069 CN2016089069W WO2017005203A1 WO 2017005203 A1 WO2017005203 A1 WO 2017005203A1 CN 2016089069 W CN2016089069 W CN 2016089069W WO 2017005203 A1 WO2017005203 A1 WO 2017005203A1
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WO
WIPO (PCT)
Prior art keywords
washing
mode
heater
drum
temperature
Prior art date
Application number
PCT/CN2016/089069
Other languages
English (en)
French (fr)
Inventor
中本重阳
广田弘美
竹内晴美
辻贵裕
广濑聡司
米田昌令
Original Assignee
海尔亚洲株式会社
青岛海尔洗衣机有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 海尔亚洲株式会社, 青岛海尔洗衣机有限公司 filed Critical 海尔亚洲株式会社
Priority to KR1020177033521A priority Critical patent/KR101964058B1/ko
Priority to EP16820854.4A priority patent/EP3257999B1/en
Priority to CN201680017467.4A priority patent/CN107709651B/zh
Priority to US15/557,127 priority patent/US10480114B2/en
Publication of WO2017005203A1 publication Critical patent/WO2017005203A1/zh

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry 
    • D06F23/02—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry  and rotating or oscillating about a horizontal axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry 
    • D06F23/06—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry  and rotating or oscillating about an inclined axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/46—Control of the energy or water consumption
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/18—Condition of the laundry, e.g. nature or weight
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/22—Condition of the washing liquid, e.g. turbidity
    • D06F34/24—Liquid temperature
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/40—Driving arrangements  for driving the receptacle and an agitator or impeller, e.g. alternatively
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/16—Washing liquid temperature
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/28—Electric heating
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/54—Changing between normal operation mode and special operation modes, e.g. service mode, component cleaning mode or stand-by mode
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/36—Driving arrangements  for rotating the receptacle at more than one speed
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/04—Heating arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the present invention relates to a drum type washing machine.
  • the drum type washing machine can be continuously carried out from laundry to dry clothes, or can be laundry but not dry.
  • a drum type washing machine rotates a horizontal axis type drum in an outer cylinder in which water is stored at the bottom, and lifts the laundry up and down by a baffle provided in the drum to drop the laundry into the drum.
  • the laundry is washed on the circumference (refer to Patent Document 1).
  • the drum type washing machine is less likely to have a smaller mechanical force acting on the laundry than the fully automatic washing machine that rotates the pulsator in the washing and dewatering tub to wash the laundry, and the washing performance is easily lowered.
  • the drum type washing machine can employ a structure in which a heater is disposed in the outer cylinder and the water stored in the outer cylinder is heated by the heater.
  • Patent Document 1 Japanese Laid-Open Patent Publication No. 2013-240577
  • the present invention has been made in view of the above problems, and an object thereof is to provide a drum type washing machine capable of improving washing performance while suppressing an increase in power consumption.
  • a drum type washing machine includes: an outer cylinder disposed in the casing; and a drum disposed in the outer cylinder and rotatable about a horizontal axis or an inclined axis inclined with respect to a horizontal direction; Disposed in the drum, the surface has a protruding portion in contact with the laundry; the driving portion can operate in a first driving form and a second driving form, wherein the first driving form is to make the drum and The rotating body rotates integrally at the same rotational speed or rotates the drum and drives the rotating body in a freely rotating state, and the second driving mode is such that the drum and the rotating body have mutually different rotational speeds a driving form of rotation; a heater that heats water for washing in the outer cylinder; and a control unit that performs at least a washing operation of the first washing mode and the second washing mode.
  • control unit operates the driving unit in the first driving mode and operates the heater in the washing process in the first washing mode. Further, the control unit operates the driving unit in the second driving mode during the washing process in the second washing mode, and reduces the amount of heat given to the water in comparison with the first washing mode. The manner is such that the heater operates or does not operate the heater.
  • the laundry in the first washing mode, since the mechanical force generated by the rotating body is not imparted, the laundry can be prevented from being damaged even if the laundry cannot withstand a strong mechanical force, and the water temperature in the outer cylinder rises. Thus, the ability of the detergent can be improved, whereby the laundry is well cleaned.
  • the mechanical force generated by the rotation of the rotating body in addition to the mechanical force generated by the rotation of the drum, so that the laundry can be reliably washed, and
  • the power supply to the heater is suppressed or the heater is not supplied with power, so that the power consumption required for the washing operation can be suppressed.
  • the drum type washing machine of the present embodiment may be configured to further include a temperature sensor that detects the temperature of the water stored in the outer cylinder heated by the heater.
  • the control unit operates the heater in a manner of causing the detected temperature of the temperature sensor to reach a first target temperature during the washing process of the first washing mode, in the second In the washing mode of the washing mode, the heater is operated in such a manner that the detected temperature of the temperature sensor reaches a second target temperature lower than the first target temperature.
  • the heater in the second washing mode, by setting the target temperature to be lower than the first washing mode, the heater can be made smaller in heat than the first washing mode. jobs.
  • the drum type washing machine of the present embodiment may further include a temperature sensor for detecting the temperature of the water stored in the outer cylinder by the heater.
  • the control unit operates the heater in a manner of causing the detected temperature of the temperature sensor to reach a target temperature during the washing of the first washing mode, and reaches the target temperature Thereafter, the heater is controlled in such a manner that the detected temperature of the temperature sensor maintains the target temperature, in the washing process of the second washing mode, so that the detected temperature of the temperature sensor reaches the target temperature The way the heater is operated and the heater is stopped after the target temperature is reached.
  • the heater is controlled in such a manner that the target temperature is maintained after reaching the target temperature in the first washing mode, and the heater is stopped after reaching the target temperature in the second washing mode, thereby enabling the second washing In the mode, the heater is operated in such a manner that the amount of heat imparted to the water is smaller than in the first washing mode.
  • the water temperature in the outer cylinder is temporarily raised to the same target temperature as the first washing mode, the effect of the warm water of the target temperature can be obtained for a certain period of time.
  • the drum type washing machine of the present embodiment can be configured to further include a dirt sensor for detecting the degree of soiling of the laundry.
  • the control unit operates the heater when the degree of contamination detected by the contamination sensor is equal to or greater than a predetermined threshold value during the washing process in the second washing mode. The heater is not operated if the degree of contamination detected by the dirt sensor is less than the threshold.
  • a drum type washing machine which can improve washing performance while suppressing an increase in power consumption.
  • FIG. 1 is a side cross-sectional view showing a configuration of a drum type washing machine according to an embodiment.
  • FIG. 2 is a cross-sectional view showing a configuration of a drive unit according to the embodiment.
  • FIG 3 is a cross-sectional view showing a configuration of a drive unit according to the embodiment.
  • FIG. 4 is a front view of a rotor showing a configuration of a rotor of a drive motor according to an embodiment.
  • Fig. 5 is an enlarged perspective view of a rear portion of a bearing unit in which a spline is formed according to an embodiment.
  • FIG. 6 is a view showing a configuration of a clutch body of a clutch mechanism portion according to the embodiment.
  • FIG. 7 is a block diagram showing a configuration of a drum type washing machine according to an embodiment.
  • FIG. 8 is a flowchart showing a control process of the washing operation in the first washing mode according to the embodiment, and a flowchart showing a control process of the washing process included in the washing operation.
  • FIG. 9 is a flowchart showing a control process of the washing operation in the second washing mode according to the embodiment, and a flowchart showing a control process of the washing process included in the washing operation.
  • FIG. 10 is a flowchart showing a control process of the washing process in the first washing mode according to Modification 1 and a flowchart showing a control process of the washing process in the second washing mode.
  • FIG. 11 is a flowchart showing a control process of the washing process in the second washing mode according to the second modification.
  • FIG. 12 is a side cross-sectional view showing a configuration of a drum type washing machine according to a third modification.
  • FIG. 13 is a flowchart showing a control process of the washing process in the second washing mode according to the third modification.
  • FIG. 14 is a cross-sectional view showing a configuration of a drive unit according to Modification 4.
  • 15 is a cross-sectional view showing the configuration of a drive unit according to Modification 4.
  • FIG. 16 is a cross-sectional view showing a configuration of a drive unit according to Modification 5.
  • 17 is a cross-sectional view of a main part of a drive unit showing a configuration of a clutch mechanism unit according to a sixth modification.
  • 10 casing; 20: outer cylinder; 22: drum; 24: rotating body; 24a: protruding portion; 30: driving portion; 60: heater; 61: temperature sensor; 70: dirty sensor; .
  • drum type washing machine which does not have a drying function, which is an embodiment of the drum type washing machine of the present invention, will be described with reference to the drawings.
  • FIG. 1 is a side cross-sectional view showing the structure of a drum type washing machine 1.
  • the drum type washing machine 1 is provided with a casing 10 that constitutes an appearance.
  • the front surface 10a of the casing 10 is inclined from the center portion to the upper portion, and the laundry inlet 11 is formed on the inclined surface.
  • the inlet 11 is covered by a door 12 that is freely opened and closed.
  • the outer cylinder 20 is elastically supported by a plurality of dampers 21.
  • a drum 22 is rotatably disposed in the outer cylinder 20.
  • the outer cylinder 20 and the rear surface side of the drum 22 are inclined so as to be lower than the horizontal direction. Thereby, the drum 22 rotates centering on the inclination axis inclined with respect to the horizontal direction.
  • the inclination angle of the outer cylinder 20 and the drum 22 can be set to about 10 to 20 degrees.
  • the opening 20a of the front surface of the outer cylinder 20 and the opening 22a of the front surface of the drum 22 face the input port 11, and are closed by the door 12 together with the input port 11.
  • a plurality of dewatering holes 22b are formed on the peripheral wall of the drum 22, a plurality of dewatering holes 22b are formed.
  • three lifting ribs 23 are provided at substantially equal intervals in the circumferential direction.
  • a rotating body 24 is rotatably disposed at a rear portion of the drum 22.
  • the rotating body 24 has a substantially disk shape.
  • a plurality of projecting portions 24a radially extending from the center portion are formed on the surface of the rotating body 24.
  • the rotating body 24 rotates coaxially with the drum 22.
  • a drive unit 30 that generates torque for driving the drum 22 and the rotating body 24 is disposed behind the outer cylinder 20.
  • the driving portion 30 rotates the drum 22 and the rotating body 24 in the same direction at different rotational speeds during the washing process and the rinsing process.
  • the drive unit 30 rotates the drum 22 at a rotational speed at which the centrifugal force applied to the laundry in the drum 22 is less than the gravity, and rotates the rotary body 24 at a rotational speed faster than the rotational speed of the drum 22.
  • the driving unit 30 may rotate the drum 22 and the rotating body 24 in the same direction in the washing process and the rinsing process in such a manner that the centrifugal force applied to the laundry in the drum 22 is less than the rotational speed of gravity.
  • the driving unit 30 integrally rotates the drum 22 and the rotating body 24 with a centrifugal force that is applied to the laundry in the drum 22 much larger than the rotational speed of gravity.
  • the detailed structure of the drive unit 30 will be described later.
  • a drain port portion 20b is formed at the bottom of the outer cylinder 20.
  • the drain port portion 20b is provided with a drain valve 40.
  • the drain valve 40 is connected to the drain hose 41. When the drain valve 40 is opened, the water stored in the outer cylinder 20 is passed through. The over-drainage hose 41 is discharged to the outside of the machine.
  • a detergent box 50 is disposed in the front upper portion of the casing 10.
  • the detergent container 50a containing the detergent is accommodated in the detergent box 50 so as to be freely extracted from the front.
  • the detergent box 50 is connected to the water supply valve 51 disposed at the rear upper portion in the casing 10 through the water supply hose 52. Further, the detergent box 50 is connected to the upper portion of the outer cylinder 20 through a water injection pipe 53.
  • the water supply valve 51 is opened, tap water from the faucet is supplied into the outer cylinder 20 through the water supply hose 52, the detergent box 50, and the water injection pipe 53. At this time, the detergent contained in the detergent container 50a is supplied into the outer cylinder 20 along the water flow.
  • a heater 60 is disposed in order to heat the water supplied into the outer cylinder 20. Further, in the vicinity of the heater 60, a temperature sensor 61 is disposed to detect the temperature of the heated water.
  • FIG. 2 and 3 are cross-sectional views showing the configuration of the drive unit 30.
  • FIG. 2 shows a state in which the driving form of the driving unit 30 is switched to the two-axis driving mode
  • FIG. 3 shows a state in which the driving form of the driving unit 30 is switched to the single-axis driving mode.
  • FIG. 4 is a front view showing the rotor 110 of the structure of the rotor 110 of the drive motor 100.
  • FIG. 5 is an enlarged perspective view of the rear portion of the bearing unit 500 in which the splines 503 are formed.
  • 6(a) to 6(c) are views showing a configuration of a clutch body 610 of the clutch mechanism portion 600, which are respectively a front view, a right side view, and a rear view of the clutch body 610.
  • the drive unit 30 includes a drive motor 100, a first rotating shaft 200, a second rotating shaft 300, a planetary gear mechanism 400, a bearing unit 500, and a clutch mechanism unit 600.
  • the drive motor 100 is an outer rotor type DC brushless motor that generates torque for driving the rotating body 24 and the drum 22.
  • the drive motor 100 includes a rotor 110 and a stator 120.
  • the rotor 110 is formed in a bottomed cylindrical shape, and permanent magnets 111 are arranged on the inner circumferential surface thereof over the entire circumference.
  • a circular protrusion 112 fixed to the second rotating shaft 300 is formed at a central portion of the rotor 110.
  • An annular engaged concave portion 113 is formed in the protruding portion 112. As shown in FIG. 4, the outer peripheral surface of the inside of the engagement recessed part 113 has the uneven part 113a over the whole circumference.
  • the stator 120 has a coil 121 at the outer peripheral portion.
  • the rotor 110 rotates.
  • the first rotating shaft 200 has a hollow shape, and includes a second rotating shaft 300 and a planetary gear mechanism 400.
  • the central portion of the first rotating shaft 200 bulges outward, and the bulging portion constitutes the planetary gear mechanism 400 Containment department.
  • the planetary gear mechanism 400 decelerates and transmits the rotation of the second rotating shaft 300, that is, the rotation of the rotor 110 of the drive motor 100, to the first rotating shaft 200.
  • the planetary gear mechanism 400 includes a sun gear 410, an annular internal gear 420 surrounding the sun gear 410, a plurality of sets of planetary gears 430 interposed between the sun gear 410 and the internal gear 420, and a planet that rotatably holds the planetary gears 430 Rack 440.
  • the sun gear 410 is fixed to the second rotating shaft 300, and the internal gear 420 is fixed to the first rotating shaft 200.
  • a set of planet gears 430 includes a first gear and a second gear that mesh with each other in a counter-rotation.
  • the planet carrier 440 includes a planet carrier shaft 441 that extends rearward.
  • the carrier shaft 441 is coaxial with the first rotating shaft 200, and is internally hollow to be inserted for the second rotating shaft 300.
  • the rear end portion of the second rotating shaft 300 protrudes rearward from the carrier shaft 441 and is fixed to the protruding portion 112 of the rotor 110.
  • the bearing unit 500 rotatably supports the first rotating shaft 200 through two bearings 501, 502 provided inside. As shown in FIG. 5, at the rear end portion of the bearing unit 500, a spline 503 is formed on the inner surface over the entire circumference.
  • the bearing unit 500 is fixed to the rear surface of the outer cylinder 20, and in this state, the first rotating shaft 200 and the second rotating shaft 300 enter the inside of the outer cylinder 20.
  • the drum 22 is fixed to the first rotating shaft 200, and the rotating body 24 is fixed to the second rotating shaft 300.
  • the clutch mechanism unit 600 switches the driving form of the driving unit 30 between the two-axis driving mode in which the rotating body 24 is rotated at a rotation speed faster than the drum 22, and the one-axis driving mode in which the drum is rotated.
  • the driving mode in which the rotating body 24 and the rotating body 24 rotate independently is a driving form in which the drum 22 and the rotating body 24 are integrally rotated to rotate the drum 22 and the rotating body 24 at the same rotational speed.
  • the uniaxial drive mode corresponds to the first drive mode of the present invention
  • the biaxial drive mode corresponds to the second drive mode of the present invention.
  • the clutch mechanism portion 600 includes a clutch body 610, a clutch spring 620, a clutch lever 630, a lever support portion 640, a clutch driving device 650, and a relay bar 660.
  • the clutch body 610 has a substantially disk shape.
  • an annular spline 611 is formed on the outer peripheral surface.
  • the spline 611 is formed to engage with the spline 503 of the bearing unit 500.
  • a flange portion 612 is formed on the outer circumferential surface of the clutch body 610 behind the spline 611.
  • an annular engagement flange portion 613 is formed at the rear end portion.
  • the engagement flange portion 613 has the same shape as the engaged concave portion 113 of the rotor 110, and has an uneven portion 613a over the entire circumference of the outer peripheral portion. When the engagement flange portion 613 is inserted into the engaged recessed portion 113, the uneven portions 613a and 113a are engaged with each other.
  • the planet carrier shaft 441 is inserted into the shaft hole 614 of the clutch body 610.
  • the spline 614a formed on the inner circumferential surface of the shaft hole 614 is engaged with the spline 441a formed on the outer circumferential surface of the carrier shaft 441.
  • the clutch body 610 is movable in the front-rear direction with respect to the carrier shaft 441, but cannot be rotated in the circumferential direction.
  • an annular receiving groove 615 is formed outside the shaft hole 614, and the receiving groove 615 houses a clutch spring 620.
  • One end of the clutch spring 620 is in contact with the rear end portion of the bearing unit 500, and the other end is in contact with the bottom surface of the receiving groove 615.
  • a pressing portion 631 that comes into contact with the rear surface of the flange portion 612 of the clutch body 610 and pushes the flange portion 612 forward is formed.
  • the clutch lever 630 is rotatably supported by a support shaft 641 provided on the lever support portion 640.
  • a mounting shaft 632 is formed at a lower end portion of the clutch lever 630.
  • the clutch driving device 650 is disposed below the clutch lever 630.
  • the clutch driving device 650 includes a torque motor 651 and a disk-shaped cam 652 that is rotated about a horizontal axis by the torque of the torque motor 651.
  • a cam shaft 653 is provided on the outer peripheral portion. The center of rotation of the cam 652 and the center of the mounting shaft 632 of the clutch lever 630 are aligned in the front-rear direction.
  • the relay bar 660 extends in the up-down direction and connects the clutch lever 630 and the cam 652.
  • the upper end portion of the relay bar 660 is attached to the mounting shaft 632 of the clutch lever 630, and the lower end portion is attached to the cam shaft 653 of the cam 652.
  • a spring 661 is integrally formed at an intermediate position of the relay bar 660.
  • the lever support portion 640 and the clutch drive device 650 are fixed to the bearing unit 500 via, for example, a mounting plate (not shown).
  • the cam 652 When the driving form of the driving unit 30 is switched from the single-axis driving mode to the two-axis driving mode, as shown in FIG. 2, the cam 652 is rotated by the torque motor 651 so that the cam shaft 653 is positioned at the lowest position. As the cam 652 rotates, the lower end portion of the clutch lever 630 is pulled downward by the relay bar 660. The clutch lever 630 rotates forward about the support shaft 641, and the pressing portion 631 pushes the clutch body 610 forward. The clutch body 610 moves forward against the elastic force of the clutch spring 620, and the splines 611 of the clutch body 610 are engaged with the splines 503 of the bearing unit 500.
  • the clutch body 610 When the cam shaft 653 moves to a predetermined position in the middle, the clutch body 610 reaches the spline 611 and the flower The position where the key 503 is engaged. At this time, the spring 661 of the relay bar 660 is in a state of natural length. Since the clutch body 610 does not move to a position forward of the engagement position, when the cam shaft 653 is moved from the predetermined position to the lowest position, as shown in FIG. 2, the spring 661 is extended downward. As described above, since the clutch lever 630 is pulled by the spring 661 to rotate forward, the clutch body 610 at the engagement position is biased by the pressing portion 631. Thereby, the spline 611 and the spline 503 can be tightly engaged.
  • the carrier shaft 441 of the planetary gear mechanism 400 that is, the carrier 440 is fixed so as not to be rotatable. status.
  • the second rotating shaft 300 rotates at a rotational speed equal to the rotational speed of the rotor 110, and the rotating body 24 coupled to the second rotating shaft 300 also functions with the rotor 110.
  • the rotation speed is equal to the rotation speed.
  • the sun gear 410 rotates in the planetary gear mechanism 400.
  • the carrier 440 since the carrier 440 is in a fixed state, the first gear and the second gear of the planetary gear 430 are respectively rotated in the opposite direction and the same direction as the sun gear 410, and the internal gear 420 is rotated in the same direction as the sun gear 410.
  • the first rotating shaft 200 fixed to the internal gear 420 rotates in the same direction as the second rotating shaft 300 at a rotational speed slower than the second rotating shaft 300, and the drum 22 fixed to the first rotating shaft 200 is rotated by the rotating body 24
  • the slow rotation speed rotates in the same direction as the rotating body 24.
  • the rotating body 24 rotates in the same direction as the drum 22 at a rotational speed faster than the drum 22.
  • the cam 652 passes through the torque motor 651 so that the cam shaft 653 is positioned at the top. Rotate.
  • the spring 661 is contracted.
  • the relay bar 660 moves upward, and the lower end portion of the clutch lever 630 is pushed by the relay bar 660 to move upward.
  • the clutch lever 630 rotates rearward about the support shaft 641, and the pressing portion 631 is separated from the flange portion 612 of the clutch body 610.
  • the clutch body 610 is moved rearward by the elastic force of the clutch spring 620, and the engagement flange portion 613 of the clutch body 610 is engaged with the engaged concave portion 113 of the rotor 110.
  • the clutch body 610 When the engagement flange portion 613 and the engaged recess portion 113 are engaged, since the clutch body 610 cannot rotate in the circumferential direction with respect to the rotor 110, the clutch body 610 is in a state of being rotatable together with the rotor 110. In such a state, when the rotor 110 rotates, the second rotating shaft 300 and the clutch body 610 The rotational speed of the rotor 110 is rotated at an equal rotational speed. At this time, in the planetary gear mechanism 400, the sun gear 410 and the carrier 440 rotate at a rotation speed equal to that of the rotor 110.
  • the internal gear 420 rotates at a rotation speed equal to that of the sun gear 410 and the carrier 440, and the first rotation shaft 200 fixed to the internal gear 420 rotates at a rotation speed equal to that of the rotor 110. That is, in the drive unit 30, the second rotating shaft 300, the planetary gear mechanism 400, and the first rotating shaft 200 rotate integrally. Thereby, the drum 22 and the rotating body 24 rotate integrally.
  • FIG. 7 is a block diagram showing the configuration of the drum type washing machine 1.
  • the drum type washing machine 1 further includes a control unit 701, a storage unit 702, an operation unit 703, a water level sensor 704, a motor drive unit 705, a water supply drive unit 706, a drain drive unit 707, and a clutch drive unit 708 in addition to the above configuration.
  • the operation unit 703 includes a power button 703a, a start button 703b, and a mode selection button 703c.
  • the power button 703a is a button for turning on and off the power of the drum type washing machine 1.
  • the start button 703b is a button for starting the operation.
  • the mode selection button 703c is a button for selecting an arbitrary washing mode from among a plurality of washing modes of the washing operation.
  • the operation unit 703 outputs an input signal corresponding to the button operated by the user to the control unit 701.
  • the water level sensor 704 detects the water level in the outer cylinder 20, and outputs a water level detection signal corresponding to the detected water level to the control unit 701.
  • the temperature sensor 61 detects the temperature of the water stored in the outer cylinder 20, and outputs a temperature detection signal corresponding to the detected temperature to the control unit 701.
  • the motor drive unit 705 drives the drive motor 100 based on a control signal from the control unit 701.
  • the motor drive unit 705 has a speed sensor that detects the rotational speed of the drive motor 100, a frequency converter circuit, and the like, and adjusts the drive current so that the drive motor 100 rotates at the rotational speed set by the control unit 701.
  • the water supply driving unit 706 drives the water supply valve 51 based on a control signal from the control unit 701.
  • the drain drive unit 707 drives the drain valve 40 based on a control signal from the control unit 701.
  • the clutch drive 650 includes a first detection sensor 654 and a second detection sensor 655.
  • the first detecting sensor 654 detects that the driving form of the driving unit 30 is switched to the two-axis driving mode, and outputs a detection signal to the control unit 701.
  • the second detecting sensor 655 detects that the driving form of the driving unit 30 is switched to the single-axis driving mode, and outputs a detection signal to the control unit 701.
  • the clutch drive unit 708 is based on The torque motor 651 is driven from the detection signals of the first detection sensor 654 and the second detection sensor 655 in accordance with a control signal output from the control unit 701.
  • the heater drive unit 709 drives the heater 60 based on a control signal output from the control unit 701.
  • the door lock device 710 performs locking and unlocking of the door 12 in accordance with a control signal from the control unit 701.
  • the storage unit 702 includes an EEPROM, a RAM, and the like.
  • the storage unit 702 stores a program for executing a washing operation of various washing operation modes. Further, the storage unit 702 stores various parameters and various control flags for executing these programs.
  • the control unit 701 controls the motor drive unit 705, the water supply drive unit 706, the drain drive unit 707, and the clutch drive unit 708 based on the signals from the operation unit 703, the water level sensor 704, the temperature sensor 61, and the like based on the program stored in the storage unit 702.
  • the washing mode performed by the drum type washing machine 1 of the present embodiment includes at least a first washing mode and a second washing mode.
  • the first washing mode may employ a washing mode for washing the laundry which is less able to withstand the mechanical force obtained by the action of the drum 22 and the rotating body 24.
  • a soft washing mode for washing clothes that are easily damaged such as a sweater, a sweater, or underwear is sometimes set to the first washing mode.
  • the second washing mode may employ a washing mode for washing laundry that is more resistant to mechanical force.
  • the standard mode for normal washing is sometimes set to the second washing mode.
  • the driving portion 30 operates in a uniaxial driving mode during the washing process and the rinsing process, and in the second washing mode, the driving portion 30 is driven in a biaxial driving mode during the washing process and the rinsing process. jobs. Further, in the washing mode of both, the detergent-containing water stored in the outer cylinder 20 is heated by the heater 60 during the washing process. However, in the second washing mode, the heater 60 operates in such a manner that the amount of heat imparted to the water is smaller than in the first washing mode.
  • Fig. 8(a) is a flowchart showing a control process of the washing operation in the first washing mode
  • Fig. 8(b) is a flowchart showing a control process of the washing process included in the washing operation.
  • the driving form of the drive unit 30 before the start of the washing operation is set to the uniaxial drive mode.
  • the control unit 701 maintains the driving form in the uniaxial driving mode and directly enters the washing process (S11).
  • the control unit 701 opens the water supply valve 51, and supplies water to the outer cylinder 20 to store the water containing the detergent in the outer cylinder 20 to a predetermined water level (S101).
  • the control unit 701 rotates the drive motor 100 (S102).
  • the drum 22 and the rotating body 24 integrally rotate rightward and leftward by a centrifugal force that acts on the laundry in the drum 22 at a rotational speed smaller than gravity.
  • control unit 701 operates the heater 60 (S103).
  • the water in the outer cylinder 20 is heated by the heat generated by the heater 60.
  • the time at which the heater 60 is operated may be set to be the same as the start of the water supply and the water supply.
  • the control unit 701 detects the temperature of the water in the outer cylinder 20 by the temperature sensor 61, and determines whether or not the water temperature in the outer cylinder 20 has reached the first target temperature (S104).
  • the first target temperature can be set to, for example, a temperature of about 40 ° C which is activated by the enzyme contained in the detergent.
  • the control unit 701 controls the opening and closing of the heater 60 so that the water temperature in the outer cylinder 20 is maintained at the first target temperature (S105). For example, the control unit 701 energizes the heater 60 when the water temperature in the outer cylinder 20 is lower than the first target temperature, and de-energizes the heater 60 when the water temperature in the outer cylinder 20 exceeds the first target temperature.
  • the laundry in the drum 22 is washed by being lifted by the lifting rib 23 and falling onto the inner circumferential surface of the drum 22.
  • the rotating body 24 since the rotating body 24 does not rotate with respect to the drum 22, the laundry is not rubbed or stirred by the protruding portion 24a of the rotating rotating body 24. Therefore, even if the laundry is a fragile laundry, the mechanical force can be excessively applied to the laundry, and the damage of the laundry can be prevented.
  • the temperature of the detergent-containing water in the outer cylinder 20 rises, the sebum is easily dissolved and removed from the laundry.
  • the ability of the detergent to be enhanced by the activation of the enzyme results in a better stain removal effect of the laundry. Thereby, good cleaning performance can be obtained without imparting a large mechanical force to the laundry.
  • the control unit 701 determines whether or not a predetermined washing time has elapsed (S106). When the washing time has elapsed (S106: YES), the control unit 701 stops the drive motor 100 (S107), and stops the heater 60 (S108). The control unit 701 opens the drain valve 40 to drain water from the inside of the outer cylinder 20 (S109). When the drainage is over, the washing process ends.
  • the control unit 701 performs an intermediate dehydration process (S12).
  • the drive form of the drive unit 30 is maintained in a single-axis drive mode.
  • the control unit 701 causes the drive motor 100 to rotate in one direction at a high speed.
  • the drum 22 and the rotating body 24 are integrally rotated such that the centrifugal force acting on the laundry in the drum 22 is much larger than the rotational speed of gravity.
  • the laundry is dehydrated by pressing on the inner peripheral surface of the drum 22 by the action of the centrifugal force.
  • the control unit 701 stops the drive motor 100. Thereby, the intermediate dehydration process ends.
  • the control section 701 performs a rinsing process (S13).
  • the drive form of the drive unit 30 is maintained in a single-axis drive mode.
  • the control unit 701 rotates the drive motor 100 after supplying water to the predetermined water level in the outer cylinder 20.
  • the drum 22 and the rotating body 24 perform right rotation and left rotation integrally by the centrifugal force which acts on the laundry in the drum 22, and the rotation speed which is smaller than gravity.
  • the laundry is rinsed in such a manner that it is turned over by the lifting rib 23 in the drum 22 and falls to the inner circumferential surface of the drum 22.
  • the control unit 701 stops the drive motor 100. Thereby, the rinsing process ends.
  • water in the outer cylinder 20 is not heated by the heater 60 during the rinsing process.
  • the water in the outer cylinder 20 may be heated during the rinsing process.
  • the control section 701 performs a final dehydration process (S14).
  • the final dehydration process is the same as the intermediate dehydration process, the dehydration time is set longer than the intermediate dehydration process. It should be noted that it is also possible to perform two or more intermediate dehydration processes (S12) and a rinsing process (S13) before the final dehydration process.
  • Fig. 9 (a) is a flowchart showing a control process of the washing operation in the second washing mode
  • Fig. 9 (b) is a flowchart showing a control process of the washing process included in the washing operation.
  • the control unit 701 when the washing operation is started, the control unit 701 operates the clutch mechanism unit 600 to switch the driving form of the driving unit 30 from the uniaxial driving mode to the biaxial driving mode (S21). Then, the control section 701 performs a washing process (S22).
  • the control unit 701 supplies water to the outer cylinder 20 so that the water containing the detergent accumulates to a predetermined water level (S201), and the drive motor 100 is rotated (S202). Since the drum 22 is switched to the two-shaft drive mode, the drum 22 has a rotation speed that acts on the laundry in the drum 22 at a rotation speed smaller than the gravity, and the rotary body 24 performs right rotation and left rotation at a rotation speed faster than the drum 22.
  • the control unit 701 determines whether or not the water temperature in the outer cylinder 20 has reached the second target temperature (S204).
  • the second target temperature is a temperature lower than the first target temperature, and can be set to a temperature of, for example, about 30 ° C where sebum is easily peeled off.
  • the control unit 701 controls the opening and closing of the heater 60 so that the water temperature in the outer cylinder 20 is maintained at the second target temperature (S205).
  • the laundry in the drum 22 is washed by being lifted by the lifting rib 23 and falling onto the inner circumferential surface of the drum 22.
  • the laundry comes into contact with the projecting portion 24a of the rotating body 24 that rotates with respect to the drum 22, and is rubbed or stirred by the projecting portion 24a.
  • the mechanical force generated by the rotating body 24 is also imparted to the laundry, so that the laundry is reliably washed.
  • control unit 701 When the control unit 701 has passed the preset washing time (S206: YES), the drive motor 100 is stopped (S207), and the heater 60 is stopped (S208). The control unit 701 opens the drain valve 40 to drain water from the inside of the outer cylinder 20 (S209). When the drainage is over, the washing process ends.
  • the intermediate dehydrating process is executed (S24).
  • the intermediate dehydration process is the same as the intermediate dehydration process of the first wash mode.
  • the control unit 701 switches the driving form of the drive unit 30 from the uniaxial drive mode to the biaxial drive mode (S25), and executes the rinsing process (S26).
  • the control unit 701 rotates the drive motor 100 after supplying water to the predetermined water level in the outer cylinder 20.
  • the drum 22 rotates the rotating body 24 faster than the drum 22 so that the centrifugal force acting on the laundry in the drum 22 is smaller than the gravity. Turn speed, right and left, respectively.
  • the laundry is rinsed in the drum 22 by being turned over by the lifting rib 23 and agitated by the rotating body 24.
  • the control unit 701 stops the drive motor 100. Thereby, the rinsing process ends.
  • the water in the outer cylinder 20 is not heated by the heater 60 during the rinsing process.
  • the water in the outer cylinder 20 may be heated in the second washing mode.
  • the target temperature in the second washing mode is set to be lower than the target temperature in the first washing mode.
  • the control unit 701 switches the driving form of the driving unit 30 from the biaxial driving mode to the uniaxial driving mode (S27), and executes the final dehydration process (S28).
  • the final dewatering process is the same as the final dewatering process of the first wash mode. It should be noted that it is also possible to perform two or more intermediate dehydration processes (S24) and a rinsing process (S26) before the final dehydration process.
  • the drive unit 30 is provided, and the drive mode can be switched between the two-axis drive mode in which the rotary body 24 rotates faster than the drum 22, and the single-shaft drive mode.
  • the driving mode in which the speed is rotated, and the drum 22 and the rotating body 24 are respectively rotated.
  • the uniaxial driving mode is such that the drum 22 and the rotating body 24 are rotated at the same rotational speed, and the drum 22 and the rotating body are rotated.
  • the driving mode in which the body 24 rotates integrally. Further, the washing operation of the first washing mode and the washing operation of the second washing mode are performed, wherein the washing operation of the first washing mode is to heat the detergent-containing water in the outer cylinder 20 by the heater 60 during the washing process.
  • the washing operation in the second washing mode is to heat the detergent-containing water in the outer cylinder 20 by the heater 60 during the washing process.
  • the second target temperature is lower than the first target temperature, and the drum 22 and the rotating body 24 are rotated in a biaxial driving manner.
  • the mechanical force generated by the rotating body 24 can be imparted to the laundry in addition to the mechanical force generated by the rotation of the drum 22, so that the laundry can be reliably washed, and even if the outer cylinder 20 is The water inside is heated, and the amount of heating is also suppressed as compared with the first washing mode, so that the power consumption required for the washing operation can be suppressed.
  • both of the first washing mode and the second washing mode control the heater 60 such that the water temperature in the outer cylinder 20 is maintained at the target temperature after reaching the target temperature.
  • the effect of warm water can be maintained for a long time during the washing process.
  • FIG. 10 is a flowchart showing a control process of the washing process in the first washing mode according to the first modification
  • (b) of FIG. 10 is a control process of the washing process in the second washing mode according to the first modification.
  • step S105 is replaced with the processing of step S111, and the processing of step S108 is deleted.
  • step S205 is replaced with the processing of step S211, and the processing of step S208 is deleted.
  • the heater 60 is controlled to be turned on and off in such a manner that the water temperature is maintained at the first target temperature.
  • the control unit 701 stops the heater 60 (S111).
  • the washing time has elapsed (S106: YES)
  • the control unit 701 stops only the drive motor 100 in step S107.
  • the heater 60 is controlled to be turned on and off in such a manner that the water temperature is maintained at the second target temperature.
  • the control unit 701 stops the heater 60 (S211).
  • the washing time has elapsed (S206: YES)
  • the control unit 701 Only the drive motor 100 is stopped in step S207.
  • the heater 60 is stopped after the water temperature in the outer cylinder 20 reaches the first target temperature and the second target temperature in the first washing mode and the second washing mode, respectively, and the target temperature is maintained. Compared with the structure, it can suppress power consumption.
  • FIG. 11 is a flowchart showing a control process of the washing process in the second washing mode according to the second modification.
  • the processing of steps S204 and S205 is replaced with the processing of steps S221 and S222, and the processing of step S208 is deleted.
  • the heater 60 is controlled to be turned on and off in such a manner that the water temperature is maintained at the second target temperature.
  • the target temperature is set to the same first target temperature as the first washing mode.
  • the washing process of the first washing mode of the present modification is the same as that of the above embodiment. That is, after the water temperature in the outer cylinder 20 reaches the first target temperature, the on/off of the heater 60 is controlled such that the water temperature is maintained at the first target temperature. As described above, in the second washing mode, the heater 60 is stopped after the water temperature in the outer cylinder 20 reaches the first target temperature. Therefore, since the amount of heating generated by the heater 60 is smaller than that of the first washing mode, power consumption can be suppressed.
  • the first target temperature can be obtained for a certain period of time. The effect of warm water.
  • FIG. 12 is a side cross-sectional view showing a configuration of a drum type washing machine 1 according to a third modification.
  • FIG. 13 is a flowchart showing a control process of the washing process in the second washing mode according to the third modification.
  • the dirt sensor 70 is disposed in the drain port portion 20b of the outer cylinder 20.
  • a pair of electrodes may be provided, and based on these electrodes a sensor of the type that detects the degree of soiling of water between the conductivity of water; a sensor of the type having a light-emitting element and a light-receiving element, and detecting the degree of contamination of water based on the transmittance of water between the elements; or A pair of electrodes, and a sensor of the type of both the light-emitting element and the light-receiving element.
  • the processing of steps S231 to S233 is added with respect to the flowchart of Fig. 9(b).
  • the control unit 701 determines the degree of contamination of the laundry based on the detection signal output from the contamination sensor 70 (S231). When the degree of contamination is equal to or greater than a predetermined threshold (S231: YES), the control unit 701 operates the heater 60 (S203). Then, the processing from steps S204 to S208 is performed.
  • step S231: NO when the degree of contamination is less than the threshold (S231: NO), the control unit 701 does not operate the heater 60. Then, when the washing time has elapsed (S232: YES), the control unit 701 stops the drive motor 100 (S233), and proceeds to step S209 to perform drainage.
  • first washing mode of the present modification is the same as the first washing mode of the above embodiment.
  • FIG. 14 and FIG. 15 are cross-sectional views showing a configuration of a drive unit 30A according to Modification 4.
  • FIG. 14 shows a state in which the driving form of the driving unit 30A is switched to the two-axis driving mode
  • FIG. 15 shows a state in which the driving form of the driving unit 30A is switched to the single-axis driving mode.
  • the configuration in which the speed difference between the drum 22 and the rotating body 24 is made is realized with respect to the use of the planetary gear mechanism 400.
  • the speed reducing mechanism constituted by the belt and the pulley is used to realize the roller.
  • the configuration of the drive unit 30A of the present modification will be described in detail.
  • the drive unit 30A includes a drive motor 100A, a first rotating shaft 200A, a second rotating shaft 300A, a bearing unit 400A, a drum reduction mechanism unit 500A, a wing reduction mechanism unit 600A, and a clutch mechanism unit 700A.
  • the drive motor 100A is, for example, an inner rotor type DC brushless motor that generates torque for driving the drum 22 and the rotating body 24.
  • the motor shaft 110A of the drive motor 100A extends rearward.
  • the first rotating shaft 200A has a hollow shape, and rotatably encloses the second rotating shaft 300A.
  • the front portion of the second rotating shaft 300A protrudes forward from the first rotating shaft 200A, and the rear portion of the second rotating shaft 300A protrudes rearward from the first rotating shaft 200A.
  • a drum 22 is fixed to the first rotating shaft 200A, and a rotating body 24 is fixed to the second rotating shaft 300A.
  • the bearing unit 400A is fixed to the rear surface of the outer cylinder 20, and rotatably supports the first rotating shaft 200A via the two bearings 401A and 402A provided inside.
  • the drum speed reduction mechanism portion 500A includes a first pulley 510A, a first motor pulley 520A, and a first transmission belt 530A, and decelerates the rotation of the drive motor 100A and transmits it to the first rotation shaft 200A.
  • the first pulley 510A is fixed to the rear end portion of the first rotating shaft 200A.
  • An annular engaged concave portion 511A is formed on the rear surface of the first pulley 510A.
  • a spline 512A is formed over the entire circumference on the outer circumferential surface of the engaged concave portion 511A.
  • the first motor pulley 520A is mounted at the root of the motor shaft 110A of the drive motor 100A.
  • the first belt 530A is disposed between the first pulley 510A and the first motor pulley 520A.
  • the wing reduction mechanism portion 600A includes a second pulley 610A, a second motor pulley 620A, and a second transmission belt 630A, and decelerates the rotation of the drive motor 100A and transmits it to the second rotation shaft 300A.
  • the second pulley 610A is coupled to the second rotating shaft 300A via the two bearings 611A and 612A, and is rotatably supported by the second rotating shaft 300A.
  • An annular engaged concave portion 613A is formed on the front surface of the second pulley 610A.
  • a spline 614A is formed over the entire circumference on the outer circumferential surface of the engaged recess 613A.
  • the second motor pulley 620A is attached to the tip end portion of the motor shaft 110A of the drive motor 100A.
  • the second transmission belt 630A is disposed between the second pulley 610A and the second motor pulley 620A.
  • the outer diameter of the first motor pulley 520A is equal to the outer diameter of the second motor pulley 620A, the outer diameter of the second pulley 610A is smaller than the outer diameter of the first pulley 510A, and thus the reduction ratio of the wing reduction mechanism portion 600A is The reduction ratio of the drum reduction mechanism unit 500A is small.
  • the clutch mechanism unit 700A switches the drive unit 30A between the two-axis drive mode and the single-axis drive mode.
  • the two-axis driving mode is to rotate the body 24 by connecting the second rotating shaft 300A and the second pulley 610A so that the rotational energy of the second pulley 610A is transmitted to the second rotating shaft 300A.
  • the uniaxial driving mode is configured to connect the second rotating shaft 300A and the first by transmitting the rotational energy of the first pulley 510A to the second rotating shaft 300A.
  • the pulley 510A rotates the drum 22 and the rotating body 24 at the same rotational speed.
  • the clutch mechanism portion 700A includes a clutch guide 710A, a clutch body 720A, a clutch lever 730A, a lever support portion 740A, and a clutch drive device 750A.
  • the clutch guide 710A and the clutch body 720A are disposed between the first pulley 510A and the second pulley 610A.
  • the clutch guide 710A has a cylindrical shape in which the front surface is opened, and is fixed to the second rotating shaft 300A in a non-movable manner in the axial direction and the circumferential direction of the second rotating shaft 300A.
  • the clutch body 720A includes a clutch portion 721A, an enclosure portion 722A, and a bearing 723A.
  • the clutch portion 721A has a cylindrical shape in which the front surface and the rear surface are opened.
  • a front spline 724A and a rear spline 725A are formed over the entire circumference in the front portion and the rear portion, respectively.
  • the clutch guide 710A is inserted into the inside of the clutch portion 721A.
  • the inner circumferential surface of the clutch portion 721A and the outer circumferential surface of the clutch guide 710A are spline-coupled, and the clutch portion 721A is fixed to the second rotation shaft 300A of the clutch guide 710A with respect to the clutch guide 710A, and is movable to the second rotation shaft 300A.
  • the axis moves but does not rotate.
  • the surrounding portion 722A is formed in an annular shape, and surrounds the central portion of the clutch portion 721A so that the clutch portion 721A is freely rotatable. Between the clutch portion 721A and the surrounding portion 722A, a bearing 723A is provided to smoothly rotate the clutch portion 721A with respect to the surrounding portion 722A.
  • the upper end portion of the clutch lever 730A is coupled to the surrounding portion 722A so as to be rotatable relative to the surrounding portion 722A. Further, the clutch lever 730A is rotatably supported by a support shaft 741A provided on the lever support portion 740A.
  • the clutch drive 750A includes an actuator 751A and an operating lever 752A.
  • the actuator 751A moves the operating lever 752A forward and backward.
  • the operating lever 752A is coupled to the lower end portion of the clutch lever 730A.
  • the lower end portion of the clutch lever 730A is rotatable relative to the operating lever 752A.
  • the rotation of the drive motor 100A is transmitted to the first rotating shaft 200A via the drum reduction mechanism portion 500A, and the drum 22 fixed to the first rotating shaft 200A is rotated.
  • the drum 22 is rotated at a rotation speed at which the reduction ratio of the drum speed reduction mechanism portion 500A is lowered at the rotation speed of the drive motor 100A.
  • the rotary body 24 rotates in the same direction as the drum 22 at a rotation speed faster than the drum 22.
  • the clutch lever 730A is coupled to the surrounding portion 722A to which the clutch portion 721A is coupled in a freely rotatable state, even if the clutch portion 721A rotates, the torque generated by the rotation is hardly transmitted to the clutch lever 730A.
  • the operating lever 752A is pulled into the inside of the actuator 751A. That is, the operating lever 752A moves rearward.
  • the lower end portion of the clutch lever 730A is pulled rearward by the operating lever 752A, and the clutch lever 730A is rotated forward about the spindle 741A.
  • the upper end portion of the clutch lever 730A moves forward, and the clutch body 720A is pushed forward by the upper end portion of the clutch lever 730A.
  • the front spline 724A of the clutch portion 721A and the spline 512A of the first pulley 510A are engaged.
  • the second pulley 610A when the drive motor 100A rotates, the second pulley 610A also rotates in accordance with the rotation. However, the second pulley 610A is only idling with respect to the second rotation shaft 300A, and the rotation of the second pulley 610A is not transmitted to the second rotation shaft 300A.
  • FIG. 16 is a cross-sectional view showing a configuration of a drive unit 30A according to Modification 5.
  • the first pulley 510A of the drum speed reduction mechanism unit 500A is changed to the first pulley 510B
  • the clutch portion 721A of the clutch mechanism unit 700A is changed to the clutch portion 721B.
  • the drive unit 30A switches the drive mode between the two-shaft drive mode and the drum single drive mode by the clutch mechanism unit 700A.
  • the drum unit driving mode the rotation of the drive motor 100A is transmitted to the drum 22 but is not transmitted to the rotating body 24, and the drum 22 is rotated, but the rotating body 24 is freely rotatable relative to the drum 22.
  • the drum unit driving form corresponds to the first driving form of the present invention.
  • the first pulley 510B is not provided with the engaged recessed portion 511A and the spline 512A provided in the first pulley 510A.
  • the clutch portion 721B is provided with the rear spline 725B, but the front spline 724A provided to the clutch portion 721A is not provided.
  • the clutch body 720A moves forward, the engagement of the rear spline 725B and the spline 614A is released, and the second rotating shaft 300A is disconnected from the first pulley 510B and the second pulley 610A. status.
  • the driving portion 30A in the first washing mode, is in the drum single during the washing process and the rinsing process.
  • the body drive pattern is driven.
  • the drive form of the drive unit 30 before the start of the washing operation is set to the drum single drive mode, and the drive form of the drive unit 30A is maintained in the drum unit drive mode from the start of the washing operation in the first washing mode.
  • the processes of steps S21 and S22 of Fig. 9(a) are changed to the single unit from the drum.
  • the drive mode is switched to the process of the two-axis drive mode, and the processes of steps S23 and S24 are changed to the process of switching from the two-axis drive mode to the drum single drive mode.
  • the driving form of the driving portion 30A is switched between the two-axis driving mode and the drum unit driving mode, and in the washing process and the rinsing process of the first washing mode, the driving portion 30A is a single roller.
  • the driving form is driven, similarly, in the drum unit driving mode, since the rotating body 24 is not rotated by the driving motor 100A, the laundry is not actively rubbed by the protruding portion 24a of the rotating rotating body 24. Or stirring, thus preventing damage to the laundry. Therefore, the washing operation of the first washing mode and the second washing mode can be performed by the configuration of the present modification, and the same operational effects as those of the above embodiment can be obtained.
  • the clutch mechanism 700A may be used instead of the clutch mechanism 700A.
  • the mechanism portion 800A is provided on the side of the drive motor 100A.
  • the bearings 611A, 612A are not provided in the second pulley 610A, and the second pulley 610A is fixed to the second rotating shaft 300A so as not to be rotatable.
  • FIG. 17 is a cross-sectional view of a main part of a drive unit 30A showing a configuration of a clutch mechanism unit 800A according to a sixth modification.
  • Fig. 17 (a) shows a state in which the driving form of the driving unit 30A is switched to the two-axis driving mode
  • Fig. 17 (b) shows a state in which the driving form of the driving unit 30A is switched to the drum single driving form.
  • the second motor pulley 620A is rotatably supported by the motor shaft 110A of the drive motor 100A. That is, the second motor pulley 620A is attached to a substantially central portion of the motor shaft 110A via the front and rear bearings 621A and 622A. The second motor pulley 620A smoothly rotates with respect to the motor shaft 110A through the bearings 621A, 622A.
  • a spline 623A is formed on the outer peripheral surface of the rear end portion over the entire circumference.
  • the clutch mechanism portion 800A includes a clutch body 810A, a clutch lever 820A, a lever support portion 830A, and a clutch drive device 840A.
  • the clutch body 810A is disposed behind the second motor pulley 620A of the motor shaft 110A, and includes a clutch portion 811A, an enclosure portion 812A, and a bearing 813A.
  • the clutch portion 811A is configured to have a rough
  • the outer shape of the front end portion 814A is larger than the outer diameter of the main body portion 815A behind the front end portion 814A.
  • the front end portion 814A is formed with an engagement recess portion 816A having an inner diameter substantially equal to the outer diameter of the rear end portion of the second motor pulley 620A.
  • the first spline 817A is formed on the inner circumferential surface of the engagement recess 816A over the entire circumference.
  • a second spline 818A is formed on the inner circumferential surface of the main body portion 815A over the entire circumference.
  • a spline 111A is formed on the outer peripheral surface of the distal end portion of the motor shaft 110A over the entire circumference.
  • the front and rear dimensions of the splines 111A are set to be larger than the front and rear dimensions of the second splines 818A.
  • the second spline 818A of the clutch portion 811A is engaged with the spline 111A of the motor shaft 110A. By this engagement, the clutch portion 811A is movable in the axial direction of the motor shaft 110A with respect to the motor shaft 110A and can be combined with the motor shaft 110A. The state of rotation.
  • the surrounding portion 812A is formed in an annular shape, and surrounds the center portion of the clutch portion 811A so that the clutch portion 811A is freely rotatable.
  • a bearing 813A is interposed between the clutch portion 811A and the surrounding portion 812A, and the clutch portion 811A is smoothly rotated with respect to the surrounding portion 812A by the bearing 813A.
  • the clutch lever 820A has a substantially Y shape, and its upper end portion is rotatably coupled to a shaft portion 819A that protrudes to the left and right of the surrounding portion 812A. Further, the clutch lever 820A is rotatably supported by a support shaft 831A provided on the lever support portion 830A.
  • the clutch drive 840A includes an actuator 841A and an operating lever 842A.
  • the actuator 841A moves the operating lever 842A forward and backward.
  • the operating lever 842A is coupled to the lower end portion of the clutch lever 820A.
  • the lower end portion of the clutch lever 820A is rotatable relative to the operating lever 842A.
  • the operating lever 842A When the driving form of the driving unit 30A is switched from the drum unit driving mode to the two-shaft driving mode, as shown in FIG. 17(a), the operating lever 842A is pulled into the inside of the actuator 841A. That is, the operating lever 842A moves rearward. The lower end portion of the clutch lever 820A is pulled rearward by the operating lever 842A, and the clutch lever 820A is rotated forward about the spindle 831A. The upper end portion of the clutch lever 820A moves forward, and the clutch body 810A is pushed forward by the upper end portion of the clutch lever 820A.
  • the driving form of the driving unit 30A is switched from the biaxial driving mode to the drum unit driving.
  • the operation lever 842A is pushed out from the inside of the actuator 841A.
  • the lower end portion of the clutch lever 820A is urged to move forward by the operating lever 842A, and the clutch lever 820A is rotated rearward about the spindle 831A.
  • the upper end portion of the clutch lever 820A moves rearward, and the clutch body 810A is pushed rearward by the upper end portion of the clutch lever 820A.
  • the heater 60 in the washing process in the second washing mode, the heater 60 is operated to heat the water in the outer cylinder 20.
  • the heater 60 may not be operated, and The water in the outer cylinder 20 is heated.
  • FIG. 9(b) the processing of steps S203 to S205 is deleted, and in FIG. 10(b), the processing of steps S203, S204, and S211 is deleted.
  • the heater 60 is disposed in the outer cylinder 20.
  • the heater 60 may be disposed outside the outer cylinder 20 as long as it can heat the water stored in the outer cylinder 20 for washing.
  • the heater 60 may be provided on the water supply route from the water supply valve 51 to the outer cylinder 20, or a circulation route for circulating water may be provided between the outer cylinder 20 and the heater 60 may be provided on the circulation route.
  • the drum 22 is rotated about the tilt axis that is inclined with respect to the horizontal direction.
  • the drum type washing machine 1 may be configured such that the drum 22 rotates around the horizontal axis.
  • drum type washing machine 1 of the above embodiment does not have a drying function
  • the present invention can also be applied to a drum type washing and drying machine which is a drum type washing machine having a drying function.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

本发明提供一种滚筒式洗衣机，其能在抑制耗电量增加的同时提高清洗性能。滚筒式洗衣机(1)具备：驱动部(30)，能以单轴驱动形态和双轴驱动形态进行工作，其中，单轴驱动形态是使滚筒(22)和旋转体(24)以同一旋转速度一体旋转的驱动形态，双轴驱动形态是使滚筒(22)和旋转体(24)以相互不同的旋转速度旋转的驱动形态；加热器(60)，将蓄于外筒(20)内用于洗涤的水加热；以及控制部，至少执行第一洗涤模式和第二洗涤模式的洗涤运转。控制部在第一洗涤模式的洗涤过程中，以单轴驱动形态使驱动部(30)工作，并且使加热器(60)工作。进而，控制部在第二洗涤模式的洗涤过程中，以双轴驱动形态使驱动部(30)工作，并且以与第一洗涤模式相比使赋予水的热量变小的方式使加热器(60)工作。

Description

滚筒式洗衣机 技术领域
本发明涉及一种滚筒式洗衣机。该滚筒式洗衣机既可以从洗衣到干衣连续地进行，也可以进行洗衣但不进行干衣。
背景技术
以往，滚筒式洗衣机使横轴型的滚筒在底部蓄有水的外筒内旋转，并通过由设置在滚筒内的提升筋(baffle)将洗涤物举起落下，将洗涤物摔到滚筒的内周面来洗涤洗涤物(参照专利文献1)。
这样，对于通过提升筋搅拌洗涤物的结构而言，洗涤物彼此之间很难互相缠绕或互相摩擦。因此，滚筒式洗衣机与在洗涤脱水桶内使波轮(pulsator)旋转来洗涤洗涤物的全自动洗衣机相比，作用于洗涤物的机械力容易变小，清洗性能容易降低。
因此，滚筒式洗衣机为了提高清洗性能，能采用在外筒内配置加热器，并通过加热器将蓄于外筒内的水加热的结构。
在采用如上所述通过加热器将外筒内的水加热的结构的情况下，洗涤运转所需的耗电量容易增大。
现有技术文献
专利文献
专利文献1：日本特开2013-240577号公报
发明内容
发明所要解决的问题
本发明是鉴于该问题而完成的技术方案，其目的在于，提供一种滚筒式洗衣机，其能在抑制耗电量的增加的同时提高清洗性能。
用于解决问题的方案
本发明的主要方式的滚筒式洗衣机具备：外筒，配置在机壳内；滚筒，配置在所述外筒内，能以水平轴或相对于水平方向倾斜的倾斜轴为中心进行旋转；旋转体，配置在所述滚筒内，表面具有与洗涤物接触的突状部；驱动部，能以第一驱动形态和第二驱动形态进行工作，其中，所述第一驱动形态是使所述滚筒和所述旋转体以同一旋转速度一体旋转或使所述滚筒旋转并且使所述旋转体呈自由旋转状态的驱动形态，第二驱动形态是使所述滚筒和所述旋转体以相互不同的旋转速度旋转的驱动形态；加热器，将蓄于所述外筒内用于洗涤的水加热；以及控制部，至少执行第一洗涤模式和第二洗涤模式的洗涤运转。此处，所述控制部在所述第一洗涤模式的洗涤过程中，以所述第一驱动形态使所述驱动部工作，并且使所述加热器工作。进而，所述控制部在所述第二洗涤模式的洗涤过程中，以所述第二驱动形态使所述驱动部工作，并且以与所述第一洗涤模式相比赋予水的热量变小的方式使所述加热器工作或不使所述加热器工作。
通过上述的结构，在第一洗涤模式下，由于不被赋予旋转体所产生的机械力，因而即使洗涤物不能承受较强的机械力也能防止布料损伤，并且由于外筒内的水温升高，因而能提高洗涤剂的能力，由此良好地清洗洗涤物。进而，在第二洗涤模式下，由于除了滚筒的旋转所产生的机械力之外，还能对洗涤物赋予旋转体的旋转所产生的机械力，因而能可靠地清洗洗涤物，并且由于与第一洗涤模式相比对加热器的供电受到抑制或不对加热器进行供电，因而能抑制洗涤运转所需的耗电量。
本方式的滚筒式洗衣机可以采用还具备温度传感器的结构，该温度传感器检测蓄于所述外筒内由所述加热器加热后的水的温度。在这种情况下，所述控制部在所述第一洗涤模式的洗涤过程中，以使所述温度传感器的检测温度达到第一目标温度的方式使所述加热器工作，在所述第二洗涤模式的洗涤过程中，以使所述温度传感器的检测温度达到低于所述第一目标温度的第二目标温度的方式使所述加热器工作。
通过上述的结构，在第二洗涤模式下，通过将目标温度设定为比第一洗涤模式低，能以与所述第一洗涤模式相比赋予水的热量变小的方式使所述加热器工作。
本方式的滚筒式洗衣机可以采用还具备用于检测蓄于所述外筒内由所述加热器加热后的水的温度的温度传感器的结构。在这种情况下，所述控制部在所述第一洗涤模式的洗涤过程中，以使所述温度传感器的检测温度达到目标温度的方式使所述加热器工作，并且在达到所述目标温度之后，以使所述温度传感器的检测温度维持所述目标温度的方式控制所述加热器，在所述第二洗涤模式的洗涤过程中，以使所述温度传感器的检测温度达到所述目标温度的方式使所述加热器工作，并且在达到所述目标温度之后，使所述加热器停止。
通过上述的结构，通过在第一洗涤模式下在达到目标温度之后以维持该目标温度的方式控制加热器，在第二洗涤模式下在达到目标温度之后使加热器停止，从而能在第二洗涤模式下，以与所述第一洗涤模式相比赋予水的热量变小的方式使所述加热器工作。
并且，由于外筒内的水温会短暂升高到与第一洗涤模式相同的目标温度，因此一段时间内，能获得目标温度的温水的效果。
本方式的滚筒式洗衣机可以采用还具备用于检测洗涤物的脏污程度的脏污传感器的结构。在这种情况下，所述控制部在所述第二洗涤模式的洗涤过程中，在通过所述脏污传感器检测到的脏污程度为规定的阈值以上的情况下使所述加热器工作，在通过所述脏污传感器检测到的脏污程度小于所述阈值的情况下不使所述加热器工作。
通过上述结构，能实现一种滚筒式洗衣机，由于在第二洗涤模式的洗涤过程中，在洗涤物的脏污程度小的情况下加热器不工作，因此能进一步减少耗电量。
发明效果
通过本发明，提供一种滚筒式洗衣机，其能在抑制耗电量的增加的同时提高清洗性能。
本发明的效果以及意义通过如下所示的实施方式的说明进一步明确。但是，以下的实施方式只是实施本发明时的一个例示，本发明不受以下的实施方式所述内容的任何限制。
附图说明
图1是表示实施方式所涉及的滚筒式洗衣机的结构的侧剖图。
图2是表示实施方式所涉及的驱动部的结构的剖视图。
图3是表示实施方式所涉及的驱动部的结构的剖视图。
图4是表示实施方式所涉及的驱动电机的转子的结构的转子主视图。
图5是实施方式所涉及的形成有花键的轴承单元的后部的放大立体图。
图6是表示实施方式所涉及的离合器机构部的离合器体的结构的图。
图7是表示实施方式所涉及的滚筒式洗衣机的结构的框图。
图8是表示实施方式所涉及的第一洗涤模式的洗涤运转的控制处理的流程图，以及表示洗涤运转所包括的洗涤过程的控制处理的流程图。
图9是表示实施方式所涉及的第二洗涤模式的洗涤运转的控制处理的流程图，以及表示洗涤运转所包括的洗涤过程的控制处理的流程图。
图10是表示变更例1所涉及的第一洗涤模式的洗涤过程的控制处理的流程图，以及表示第二洗涤模式的洗涤过程的控制处理的流程图。
图11是表示变更例2所涉及的第二洗涤模式的洗涤过程的控制处理的流程图。
图12是表示变更例3所涉及的滚筒式洗衣机的结构的侧剖图。
图13是表示变更例3所涉及的第二洗涤模式的洗涤过程的控制处理的流程图。
图14是表示变更例4所涉及的驱动部的结构的剖视图。
图15是表示变更例4所涉及的驱动部的结构的剖视图。
图16是表示变更例5所涉及的驱动部的结构的剖视图。
图17是表示变更例6所涉及的离合器机构部的结构的驱动部主要部分剖视图。
附图标记说明
10：机壳；20：外筒；22：滚筒；24：旋转体；24a：突状部；30：驱动部；60：加热器；61：温度传感器；70：脏污传感器；701：控制部。
具体实施方式
以下，参照附图，对本发明的滚筒式洗衣机的一实施方式即不具有干衣功能的滚筒式洗衣机进行说明。
图1是表示滚筒式洗衣机1的结构的侧剖图。
滚筒式洗衣机1具备构成外观的机壳10。机壳10的前表面10a从中央部倾斜到上部，在倾斜的面上形成有洗涤物的投入口11。投入口11由自由开闭的门12遮盖。
在机壳10内，由多个减振器21弹性地支承有外筒20。在外筒20内自由旋转地配置有滚筒22。外筒20以及滚筒22以后表面侧相对于水平方向变低的方式倾斜。由此，滚筒22以相对于水平方向倾斜的倾斜轴为中心进行旋转。外筒20以及滚筒22的倾斜角度可以设定为10～20度左右。外筒20的前表面的开口部20a以及滚筒22的前表面的开口部22a与投入口11对置，并与投入口11一起由门12来关闭。在滚筒22的周壁，形成有许多个脱水孔22b。进而，在滚筒22的内周面，在周向上以大致相等的间隔设有三个提升筋23。
在滚筒22的后部，自由旋转地配置有旋转体24。旋转体24具有大致圆盘形状。在旋转体24的表面，形成有从中央部放射状延伸的多个突状部24a。旋转体24与滚筒22同轴旋转。
在外筒20的后方，配置有产生驱动滚筒22以及旋转体24的转矩的驱动部30。驱动部30在洗涤过程以及漂洗过程时，使滚筒22以及旋转体24在以不同的旋转速度同向旋转。具体地说，驱动部30使滚筒22以施加给滚筒22内的洗涤物的离心力小于重力的旋转速度进行旋转，并使旋转体24以比滚筒22的旋转速度快的旋转速度进行旋转。需要说明的是，驱动部30有时会根据洗涤模式，在洗涤过程以及漂洗过程时，使滚筒22以及旋转体24以施加给滚筒22内的洗涤物的离心力小于重力的旋转速度同向一体旋转。
另一方面，驱动部30在脱水过程时，使滚筒22以及旋转体24以施加给滚筒22内的洗涤物的离心力远远大于重力的旋转速度一体旋转。驱动部30的详细结构随后进行说明。
在外筒20的底部形成有排水口部20b。排水口部20b设置有排水阀40。排水阀40与排水软管41连接。当排水阀40打开时，蓄于外筒20内的水就会通 过排水软管41向机外排出。
在机壳10内的前方上部配置有洗涤剂盒50。收容有洗涤剂的洗涤剂容器50a从前方自由抽出地收容于洗涤剂盒50。洗涤剂盒50通过给水软管52与配置在机壳10内的后方上部的给水阀51连接。此外，洗涤剂盒50通过注水管53与外筒20的上部连接。当给水阀51打开时，来自水龙头的自来水通过给水软管52、洗涤剂盒50以及注水管53被供给至外筒20内。此时，收容在洗涤剂容器50a中的洗涤剂顺着水流被供给至外筒20内。
在外筒20的底部，为了将供给至外筒20内的水加热，配置有加热器60。进而，在加热器60的附近，为了检测加热过的水的温度，配置有温度传感器61。
接着，对驱动部30的结构进行详细说明。
图2以及图3是表示驱动部30的结构的剖视图。图2表示驱动部30的驱动形态被切换到双轴驱动形态的状态，图3表示驱动部30的驱动形态被切换到单轴驱动形态的状态。图4是表示驱动电机100的转子110的结构的转子110的主视图。图5是形成有花键503的轴承单元500的后部的放大立体图。图6(a)至(c)是表示离合器机构部600的离合器体610的结构的图，分别为离合器体610的主视图、右视图以及后视图。
驱动部30包括：驱动电机100、第一旋转轴200、第二旋转轴300、行星齿轮机构400、轴承单元500以及离合器机构部600。
驱动电机100是外转子型的DC无刷电机，产生用于驱动旋转体24以及滚筒22的转矩。驱动电机100包括转子110和定子120。转子110形成为有底的圆筒状，在其内周面遍及整周地排列有永磁铁111。在转子110的中央部形成有固定于第二旋转轴300的圆形的突起部112。在突起部112，形成有环状的被卡合凹部113。如图4所示，被卡合凹部113内的外侧的周面遍及整周地具有凹凸部113a。
定子120在外周部具有线圈121。当从后述的电机驱动部供电至定子120的线圈121时，转子110旋转。
第一旋转轴200具有中空形状，内包第二旋转轴300和行星齿轮机构400。第一旋转轴200的中央部向外侧膨出，该膨出的部位构成行星齿轮机构400的 收容部。
行星齿轮机构400将第二旋转轴300的旋转即驱动电机100的转子110的旋转减速并传递给第一旋转轴200。行星齿轮机构400包括：太阳轮410、包围太阳轮410的环状的内齿轮420、介于太阳轮410和内齿轮420之间的多组行星齿轮430以及自由旋转地保持这些行星齿轮430的行星架440。
太阳轮410固定在第二旋转轴300，内齿轮420固定在第一旋转轴200。一组行星齿轮430包括相互啮合反向旋转的第一齿轮和第二齿轮。行星架440包括向后方延伸的行星架轴441。行星架轴441与第一旋转轴200同轴，并且内部形成为中空以供第二旋转轴300插入。
第二旋转轴300的后端部从行星架轴441向后方突出，并固定在转子110的突起部112。
轴承单元500通过设置于内部的两个轴承501、502，可旋转地支承第一旋转轴200。如图5所示，在轴承单元500的后端部，在内表面，遍及整周地形成有花键503。轴承单元500固定在外筒20的后表面，在该状态下，第一旋转轴200以及第二旋转轴300进入外筒20的内部。滚筒22固定在第一旋转轴200，旋转体24固定在第二旋转轴300。
离合器机构部600在双轴驱动形态和单轴驱动形态之间切换驱动部30的驱动形态，其中，双轴驱动形态是以使旋转体24以比滚筒22快的旋转速度进行旋转的方式使滚筒22和旋转体24独立旋转的驱动形态，单轴驱动形态是以使滚筒22和旋转体24以同一旋转速度进行旋转的方式使滚筒22和旋转体24一体旋转的驱动形态。单轴驱动形态相当于本发明的第一驱动形态，双轴驱动形态相当于本发明的第二驱动形态。
离合器机构部600包括：离合器体610、离合器弹簧620、离合器杆630、杆支承部640、离合器驱动装置650、以及中继棒660。
如图6(a)至(c)所示，离合器体610具有大致圆盘形状。在离合器体610的前端部，在外周面，形成有环状的花键611。花键611形成为与轴承单元500的花键503卡合。此外，在离合器体610的外周面，在花键611的后方形成有凸缘部612。进而，在离合器体610，于后端部形成有环状的卡合凸缘部613。 卡合凸缘部613具有与转子110的被卡合凹部113相同的形状，在外周部遍及整周地具有凹凸部613a。当卡合凸缘部613插入被卡合凹部113时，凹凸部613a、113a彼此卡合。
行星架轴441插入离合器体610的轴孔614。形成于轴孔614的内周面的花键614a和形成于行星架轴441的外周面的花键441a卡合。由此，离合器体610呈相对于行星架轴441能向前后方向移动，但无法向周向转动的状态。
在离合器体610，在轴孔614的外侧形成有环状的收容槽615，该收容槽615收容有离合器弹簧620。离合器弹簧620的一端与轴承单元500的后端部相接，另一端与收容槽615的底面相接。
在离合器杆630的上端部，形成有与离合器体610的凸缘部612的后表面接触，并将凸缘部612向前方推的推压部631。离合器杆630由设置于杆支承部640的支轴641自由转动地支承。在离合器杆630的下端部，形成有安装轴632。
离合器驱动装置650配置于离合器杆630的下方。离合器驱动装置650包括转矩电机651和通过转矩电机651的转矩绕水平轴旋转的圆盘状的凸轮652。在凸轮652的上表面，在外周部设置有凸轮轴653。凸轮652的旋转中心和离合器杆630的安装轴632的中心在前后方向上一致。
中继棒660向上下方向延伸，连结离合器杆630和凸轮652。中继棒660的上端部安装于离合器杆630的安装轴632，下端部安装于凸轮652的凸轮轴653。在中继棒660的中间位置一体地形成有弹簧661。
杆支承部640以及离合器驱动装置650例如经由未图示的安装板固定于轴承单元500。
在驱动部30的驱动形态从单轴驱动形态切换至双轴驱动形态的情况下，如图2所示，凸轮652通过转矩电机651，以使凸轮轴653位于最下方的方式被旋转。随着凸轮652旋转，离合器杆630的下端部被中继棒660拉向下方。离合器杆630以支轴641为中心向前方旋转，推压部631向前方推动离合器体610。离合器体610抵抗离合器弹簧620的弹力向前方移动，离合器体610的花键611和轴承单元500的花键503卡合。
当凸轮轴653移动到中间的规定位置时，离合器体610到达花键611与花 键503卡合的位置。这时，中继棒660的弹簧661处于自然长度的状态。由于离合器体610不会移动至比该卡合位置更前方的位置，因此当凸轮轴653从规定位置移动至最下方的位置时，如图2所示，弹簧661伸长至下方。如此，由于离合器杆630被弹簧661以向前方转动的方式拉动，因此处于卡合位置的离合器体610被推压部631施加推压力。由此，能使花键611与花键503紧紧卡合。
当花键611和花键503卡合时，由于离合器体610呈相对于轴承单元500无法向周向转动的状态，因而行星齿轮机构400的行星架轴441即行星架440呈被固定成无法旋转的状态。在这样的状态下，当转子110旋转时，第二旋转轴300以与转子110的旋转速度相等的旋转速度进行旋转，并且与第二旋转轴300连结着的旋转体24也以与转子110的旋转速度相等的旋转速度进行旋转。随着第二旋转轴300旋转，在行星齿轮机构400中太阳轮410进行旋转。如上所述，由于行星架440处于被固定的状态，因此行星齿轮430的第一齿轮以及第二齿轮分别与太阳轮410逆向和同向旋转，内齿轮420与太阳轮410同向旋转。由此，固定于内齿轮420的第一旋转轴200以比第二旋转轴300慢的旋转速度与第二旋转轴300同向旋转，固定于第一旋转轴200的滚筒22以比旋转体24慢的旋转速度与旋转体24同向旋转。换言之，旋转体24以比滚筒22快的旋转速度与滚筒22同向旋转。
另一方面，在驱动部30的形态从双轴驱动形态切换至单轴驱动形态的情况下，如图3所示，凸轮652通过转矩电机651，以使凸轮轴653位于最上方的方式被旋转。当凸轮652进行旋转，凸轮轴653向上方移动时，首先，弹簧661收缩。当弹簧661恢复到自然长度时，之后，随着凸轮轴653移动，中继棒660向上方移动，离合器杆630的下端部被中继棒660推动，向上方移动。离合器杆630以支轴641为中心向后方旋转，推压部631离开离合器体610的凸缘部612。离合器体610通过离合器弹簧620的弹力向后方移动，离合器体610的卡合凸缘部613和转子110的被卡合凹部113卡合。
当卡合凸缘部613和被卡合凹部113卡合时，由于离合器体610相对于转子110无法向周向转动，因而离合器体610呈能与转子110一起旋转的状态。在这样的状态下，当转子110旋转时，第二旋转轴300以及离合器体610以与 转子110的旋转速度相等的旋转速度进行旋转。此时，在行星齿轮机构400中，太阳轮410和行星架440以与转子110相等的旋转速度进行旋转。由此，内齿轮420以与太阳轮410以及行星架440相等的旋转速度进行旋转，固定于内齿轮420的第一旋转轴200以与转子110相等的旋转速度进行旋转。即，在驱动部30中，第二旋转轴300、行星齿轮机构400以及第一旋转轴200一体旋转。由此，滚筒22和旋转体24一体旋转。
图7是表示滚筒式洗衣机1的结构的框图。
滚筒式洗衣机1除了上述的结构之外，还具备：控制部701、存储部702、操作部703、水位传感器704、电机驱动部705、给水驱动部706、排水驱动部707、离合器驱动部708、加热器驱动部709以及门锁装置710。
操作部703包括：电源按钮703a、开始按钮703b、以及模式选择按钮703c。电源按钮703a是用于接通和切断滚筒式洗衣机1的电源的按钮。开始按钮703b是用于使运转开始的按钮。模式选择按钮703c是用于从洗涤运转的多个洗涤模式中选择任意的洗涤模式的按钮。操作部703将与用户操作的按钮对应的输入信号输出给控制部701。
水位传感器704检测外筒20内的水位，将与检测到的水位对应的水位检测信号输出给控制部701。温度传感器61检测蓄于外筒20内的水的温度，将与检测到的温度对应的温度检测信号输出给控制部701。
电机驱动部705根据来自控制部701的控制信号，驱动驱动电机100。电机驱动部705具有检测驱动电机100的旋转速度的速度传感器、变频器电路等，以使驱动电机100以由控制部701设定的旋转速度进行旋转的方式调整驱动电流。
给水驱动部706根据来自控制部701的控制信号，驱动给水阀51。排水驱动部707根据来自控制部701的控制信号，驱动排水阀40。
离合器驱动装置650包括第一检测传感器654和第二检测传感器655。第一检测传感器654检测到驱动部30的驱动形态切换到了双轴驱动形态，并将检测信号输出给控制部701。第二检测传感器655检测到驱动部30的驱动形态切换到了单轴驱动形态，并将检测信号输出给控制部701。离合器驱动部708基于来 自第一检测传感器654和第二检测传感器655的检测信号并根据从控制部701输出的控制信号，驱动转矩电机651。
加热器驱动部709根据从控制部701输出的控制信号，驱动加热器60。
门锁装置710根据来自控制部701的控制信号进行门12的上锁以及解锁。
存储部702包括EEPROM、RAM等。存储部702存储有用于执行各种洗涤运转模式的洗涤运转的程序。此外，存储部702存储有用于执行这些程序的各种参数、各种控制标记。
控制部701基于来自操作部703、水位传感器704、温度传感器61等的各信号，根据存储于存储部702的程序，控制电机驱动部705、给水驱动部706、排水驱动部707、离合器驱动部708、加热器驱动部709、门锁装置710等。
本实施方式的滚筒式洗衣机1所执行的洗涤模式至少包括第一洗涤模式和第二洗涤模式。第一洗涤模式可以采用用于对不太能承受通过滚筒22、旋转体24的动作而得到的机械力的洗涤物进行洗涤的洗涤模式。例如，有时会将用于对毛衣、羊毛衫、贴身内衣等易损伤的衣物进行洗涤的柔洗模式设定为第一洗涤模式。第二洗涤模式可以采用用于对比较能承受机械力的洗涤物进行洗涤的洗涤模式。例如，有时会将用于普通洗涤的标准模式设定为第二洗涤模式。
在第一洗涤模式下，在洗涤过程和漂洗过程中，驱动部30以单轴驱动形态进行工作，在第二洗涤模式下，在洗涤过程和漂洗过程中，驱动部30以双轴驱动形态进行工作。此外，在双方的洗涤模式下，在洗涤过程中，蓄于外筒20内的含有洗涤剂的水通过加热器60被加热。但是，在第二洗涤模式下，加热器60以与第一洗涤模式相比赋予水的热量变小的方式进行工作。
以下，对第一洗涤模式和第二洗涤模式的洗涤运转进行说明。首先，对第一洗涤模式的洗涤运转进行说明。
图8(a)是表示第一洗涤模式的洗涤运转的控制处理的流程图，图8(b)是表示洗涤运转所包括的洗涤过程的控制处理的流程图。
当通过模式选择按钮703c选择了第一洗涤模式之后按压开始按钮703b时，第一洗涤模式的洗涤运转开始。
在本实施方式中，洗涤运转开始之前的驱动部30的驱动形态设定为单轴驱动形态。参照图8(a)，当洗涤运转开始时，控制部701将驱动形态维持在单轴驱动形态，直接进入洗涤过程(S11)。
参照图8(b)，控制部701打开给水阀51，向外筒20内给水，使外筒20内积蓄含有洗涤剂的水至规定水位(S101)。当给水结束时，控制部701使驱动电机100旋转(S102)。滚筒22以及旋转体24以作用于滚筒22内的洗涤物的离心力比重力小的旋转速度一体地进行右旋转和左旋转。
进而，控制部701使加热器60工作(S103)。外筒20内的水通过加热器60的发热被加热。需要说明的是，使加热器60工作的时间点也可以设定为与开始给水同时、给水中途。
控制部701通过温度传感器61检测外筒20内的水温，判定外筒20内的水温是否达到了第一目标温度(S104)。第一目标温度能设定为例如洗涤剂所含的酶活化的40℃左右的温度。
当外筒20内的水温达到第一目标温度时(S104：是)，控制部701以使外筒20内的水温维持在第一目标温度的方式控制加热器60的通断(S105)。例如，控制部701在外筒20内的水温低于第一目标温度时对加热器60通电，在外筒20内的水温超过第一目标温度时对加热器60断电。
滚筒22内的洗涤物以被提升筋23翻转，摔到滚筒22的内周面的方式被洗涤。另一方面，由于旋转体24相对于滚筒22不旋转，因而洗涤物不会被旋转的旋转体24的突状部24a摩擦或搅拌。因此，即使洗涤物是易损的衣物，也能使机械力不过分施加给洗涤物，能防止洗涤物的损伤。
进而，由于外筒20内的含有洗涤剂的水的温度升高，因此皮脂容易溶解出来从洗涤物中除去。此外，洗涤剂的能力因酶的活化而提高使得洗涤物的去污效果更好。由此，即使不赋予洗涤物大的机械力，也能获得良好的清洗性能。
控制部701判定是否经过了预先设定的洗涤时间(S106)。并且，当经过了洗涤时间时(S106：是)，控制部701使驱动电机100停止(S107)，并且使加热器60停止(S108)。控制部701打开排水阀40从外筒20内排水(S109)。当排水结束时，洗涤过程结束。
返回图8(a)，控制部701执行中间脱水过程(S12)。驱动部30的驱动形态被维持在单轴驱动形态。控制部701使驱动电机100以高速单向旋转。滚筒22以及旋转体24以使作用于滚筒22内的洗涤物的离心力远远大于重力的旋转速度一体旋转。通过离心力的作用，洗涤物被按在滚筒22的内周面进行脱水。当经过了预定的脱水时间时，控制部701使驱动电机100停止。由此，中间脱水过程结束。
接着，控制部701执行漂洗过程(S13)。驱动部30的驱动形态被维持在单轴驱动形态。控制部701在对外筒20内给水至规定水位之后使驱动电机100旋转。滚筒22以及旋转体24以使作用于滚筒22内的洗涤物的离心力比重力小的旋转速度一体地进行右旋转和左旋转。洗涤物以在滚筒22内被提升筋23翻转，摔到滚筒22的内周面的方式被漂洗。当经过了预定的漂洗时间时，控制部701使驱动电机100停止。由此，漂洗过程结束。
需要说明的是，为了抑制耗电量的增加，在漂洗过程中外筒20内的水不通过加热器60加热。但是，在优先考虑温水带来的漂洗性能的提高的情况下，在漂洗过程中也可以对外筒20内的水进行加热。
当漂洗过程结束时，控制部701执行最终脱水过程(S14)。虽然最终脱水过程与中间脱水过程相同，但是脱水时间设定地比中间脱水过程长。需要说明的是，也可以在最终脱水过程之前，进行两次以上的中间脱水过程(S12)和漂洗过程(S13)。
当最终脱水过程结束时，第一洗涤模式的洗涤运转结束。
接着，对第二洗涤模式的洗涤运转进行说明。图9(a)是表示第二洗涤模式的洗涤运转的控制处理的流程图，图9(b)是表示洗涤运转所包括的洗涤过程的控制处理的流程图。
当通过模式选择按钮703c选择第二洗涤模式之后按压开始按钮703b时，第二洗涤模式的洗涤运转开始。
参照图9(a)，当洗涤运转开始时，控制部701使离合器机构部600工作，使驱动部30的驱动形态从单轴驱动形态切换至双轴驱动形态(S21)。然后，控制部701执行洗涤过程(S22)。
参照图9(b)，控制部701与第一洗涤模式的情况相同，在向外筒20内给水使得含有洗涤剂的水蓄积至规定水位之后(S201)，使驱动电机100旋转(S202)。由于切换到了双轴驱动形态，因此滚筒22以作用于滚筒22内的洗涤物的离心力比重力小的旋转速度，旋转体24以比滚筒22快的旋转速度，分别进行右旋转和左旋转。
进而，控制部701在使加热器60工作之后(S203)，判定外筒20内的水温是否达到了第二目标温度(S204)。第二目标温度是比第一目标温度低的温度，能设定为例如皮脂脏污容易脱落的30℃左右的温度。当外筒20内的水温达到第二目标温度时(S204：是)，控制部701以使外筒20内的水温维持在第二目标温度的方式控制加热器60的通断(S205)。
滚筒22内的洗涤物以被提升筋23翻转，摔到滚筒22的内周面的方式被洗涤。除此之外，在滚筒22的后部，洗涤物与相对于滚筒22进行旋转的旋转体24的突状部24a接触，被突状部24a摩擦或搅拌。除了滚筒22的旋转所产生的机械力之外旋转体24所产生的机械力也被赋予洗涤物，使得洗涤物可靠地被洗涤。
这样，由于对洗涤物赋予大的机械力，因此即使外筒20内的水温不那么高，也能获得良好的清洗性能。因此，在第二洗涤模式下，将目标水温降低，将加热器60所产生的加热量抑制得较低，由此，能抑制洗涤运转所需的耗电量。
控制部701在经过预先设定的洗涤时间时(S206：是)，使驱动电机100停止(S207)，并且使加热器60停止(S208)。控制部701打开排水阀40从外筒20内排水(S209)。当排水结束时，洗涤过程结束。
返回图9(a)，控制部701在将驱动部30的驱动形态从双轴驱动形态切换至单轴驱动形态之后(S23)，执行中间脱水过程(S24)。中间脱水过程与第一洗涤模式的中间脱水过程相同。
当中间脱水过程结束时，控制部701在将驱动部30的驱动形态从单轴驱动形态切换至双轴驱动形态之后(S25)，执行漂洗过程(S26)。控制部701在对外筒20内给水至规定水位之后使驱动电机100旋转。滚筒22以使作用于滚筒22内的洗涤物的离心力比重力小的旋转速度，旋转体24以比滚筒22快的旋 转速度，分别进行右旋转和左旋转。洗涤物以在滚筒22内被提升筋23翻转和被旋转体24搅拌的方式被漂洗。当经过预定的漂洗时间时，控制部701使驱动电机100停止。由此，漂洗过程结束。
需要说明的是，与第一洗涤模式相同，在漂洗过程中外筒20内的水不通过加热器60加热。但是，在第一洗涤模式的漂洗过程中对外筒20内的水进行了加热的情况下，在第二洗涤模式下也可以将外筒20内的水加热。在这种情况下，与洗涤过程相同，优选第二洗涤模式下的目标温度设定为比第一洗涤模式下的目标温度低。
当漂洗过程结束时，控制部701在将驱动部30的驱动形态从双轴驱动形态切换至单轴驱动形态之后(S27)，执行最终脱水过程(S28)。最终脱水过程与第一洗涤模式的最终脱水过程相同。需要说明的是，也可以在最终脱水过程之前，进行两次以上的中间脱水过程(S24)和漂洗过程(S26)。
当最终脱水过程结束时，第二洗涤模式的洗涤运转结束。
<实施方式的效果>
根据本实施方式，具备驱动部30，能在双轴驱动形态和单轴驱动形态之间切换驱动形态，其中，所述双轴驱动形态是指，以使旋转体24以比滚筒22快的旋转速度进行旋转的方式，使滚筒22以及旋转体24分别旋转的驱动形态，所述单轴驱动形态是指，以使滚筒22和旋转体24以同一旋转速度进行旋转的方式，使滚筒22以及旋转体24一体旋转的驱动形态。进而，执行第一洗涤模式的洗涤运转和第二洗涤模式的洗涤运转，其中，第一洗涤模式的洗涤运转是在洗涤过程中，用加热器60将外筒20内的含有洗涤剂的水加热至第一目标温度，并且以单轴驱动形态使滚筒22以及旋转体24旋转；第二洗涤模式的洗涤运转是在洗涤过程中，用加热器60将外筒20内的含有洗涤剂的水加热至比第一目标温度低的第二目标温度，并且以双轴驱动形态使滚筒22以及旋转体24旋转。
由此，在第一洗涤模式下，由于不被赋予旋转体24所产生的机械力，因而即使洗涤物不太能承受机械力也能防止布料损伤，并且由于外筒20内的水温升高，因而能通过提高洗涤剂的能力等从而良好地对洗涤物进行洗涤。进而，在 第二洗涤模式下，由于除了滚筒22的旋转所产生的机械力之外还能将旋转体24的旋转所产生的机械力赋予洗涤物，因而能可靠地洗涤洗涤物，并且由于即使对外筒20内的水进行加热，该加热量与第一洗涤模式相比也受到了抑制，因而能抑制洗涤运转所需的耗电量。
进而，在本实施方式中，第一洗涤模式和第二洗涤模式双方都以使外筒20内的水温在达到目标温度之后还维持在目标温度的方式控制加热器60。由此，在洗涤过程中能较长地维持温水所带来的效果。
以上，虽然关于本发明的实施方式进行了说明，但是本发明不受上述实施方式等的任何限制，另外，本发明的实施方式也可以进行上述以外的各种变更。
<变更例1>
图10(a)是表示变更例1所涉及的第一洗涤模式的洗涤过程的控制处理的流程图，图10(b)是表示变更例1所涉及的第二洗涤模式的洗涤过程的控制处理的流程图。
在图10(a)的流程图中，相对于图8(b)的流程图，步骤S105的处理被置换为步骤S111的处理，步骤S108的处理被删除。此外，在图10(b)的流程图中，相对于图9(b)的流程图，步骤S205的处理被置换为步骤S211的处理，步骤S208的处理被删除。
即，在上述实施方式中，在第一洗涤模式的洗涤过程中，在外筒20内的水温达到第一目标温度之后，以使该水温维持在第一目标温度的方式控制加热器60的通断。与此相对，在本变更例中，如图10(a)所示，当外筒20内的水温达到第一目标温度时(S104：是)，控制部701使加热器60停止(S111)。在经过了洗涤时间时(S106：是)，由于加热器60已经停止，因而控制部701在步骤S107中只使驱动电机100停止。
同样，在上述实施方式中，在第二洗涤模式的洗涤过程中，在外筒20内的水温达到第二目标温度之后，以使该水温维持在第二目标温度的方式控制加热器60的通断。与此相对，在本变更例中，如图10(b)所示，当外筒20内的水温达到第二目标温度时(S204：是)，控制部701使加热器60停止(S211)。在经过了洗涤时间时(S206：是)，由于加热器60已经停止，因而控制部701 在步骤S207中只使驱动电机100停止。
通过本变更例的结构，由于在第一洗涤模式和第二洗涤模式下，分别在外筒20内的水温达到第一目标温度和第二目标温度之后使加热器60停止，因而与维持目标温度的结构相比，能抑制耗电量。
<变更例2>
图11是表示变更例2所涉及的第二洗涤模式的洗涤过程的控制处理的流程图。在图11的流程图中，相对于图9(b)的流程图，步骤S204以及S205的处理被置换为步骤S221以及S222的处理，步骤S208的处理被删除。
即，在上述实施方式中，在第二洗涤模式的洗涤过程中，在外筒20内的水温达到第二目标温度之后，以使该水温维持在第二目标温度的方式控制加热器60的通断。与此相对，在本变更例中，目标温度设定为与第一洗涤模式相同的第一目标温度。而且，如图11所示，当外筒20内的水温达到第一目标温度时(S221：是)，控制部701使加热器60停止(S222)。在经过了洗涤时间时(S206：是)，由于加热器60已经停止，因而控制部701在步骤S207中只使驱动电机100停止。
本变更例的第一洗涤模式的洗涤过程与上述实施方式相同。即，在外筒20内的水温达到第一目标温度之后，以使该水温维持在第一目标温度的方式控制加热器60的通断。如上所述，在第二洗涤模式下，在外筒20内的水温达到第一目标温度之后使加热器60停止。因此，由于与第一洗涤模式相比加热器60所产生的加热量变小，因而能抑制耗电量。
通过本变更例的结构，在第二洗涤模式下，由于外筒20内的水温会短暂升高到与第一洗涤模式相同的第一目标温度，因此一段时间内，能获得第一目标温度的温水的效果。
<变更例3>
图12是表示变更例3所涉及的滚筒式洗衣机1的结构的侧剖图。图13是表示变更例3所涉及的第二洗涤模式的洗涤过程的控制处理的流程图。
如图12所示，在本变更例中，在外筒20的排水口部20b内配置有脏污传感器70。作为脏污传感器70，例如可以例举出具备一对电极，并基于这些电极 之间的水的导电率检测水的脏污程度的类型的传感器；具备发光元件和受光元件，并基于这些元件之间的水的透光度检测水的脏污程度的类型的传感器；或者具备一对电极、以及发光元件和受光元件双方的类型的传感器。
在图13的流程图中，相对于图9(b)的流程图，追加了步骤S231至S233的处理。即，在第二洗涤模式的洗涤过程中，控制部701在步骤S202中使驱动电机100旋转之后，根据由脏污传感器70输出的检测信号，判定洗涤物的脏污程度(S231)。在脏污程度为规定的阈值以上的情况下(S231：是)，控制部701使加热器60工作(S203)。然后，进行从步骤S204到S208的处理。
另一方面，在脏污程度小于阈值的情况下(S231：否)，控制部701不使加热器60工作。然后，当经过洗涤时间时(S232：是)，控制部701使驱动电机100停止(S233)，并移至步骤S209，进行排水。
需要说明的是，本变更例的第一洗涤模式与上述实施方式的第一洗涤模式相同。
通过本变更例的结构，能实现一种滚筒式洗衣机，其在第二洗涤模式的洗涤过程中，由于在洗涤物的脏污程度小的情况下加热器60不工作，因此能进一步减少耗电量。
需要说明的是，本变更例中也能适用变更例1至3的任一例的结构。
<变更例4>
图14以及图15是表示变更例4所涉及的驱动部30A的结构的剖视图。图14表示驱动部30A的驱动形态被切换至双轴驱动形态的状态，图15表示驱动部30A的驱动形态被切换至单轴驱动形态的状态。
在上述实施方式中，相对于使用行星齿轮机构400来实现使滚筒22与旋转体24之间具有速度差的结构，在本变更例中，使用由传动带和带轮构成的减速机构来实现使滚筒22与旋转体24之间具有速度差的结构。以下，对本变更例的驱动部30A的结构进行详细说明。
驱动部30A包括：驱动电机100A、第一旋转轴200A、第二旋转轴300A、轴承单元400A、滚筒减速机构部500A、翼减速机构部600A、以及离合器机构部700A。
驱动电机100A是例如内转子型的DC无刷电机，产生用于驱动滚筒22和旋转体24的转矩。驱动电机100A的电机轴110A向后方延伸。
第一旋转轴200A具有中空形状，可旋转地内包第二旋转轴300A。第二旋转轴300A的前部从第一旋转轴200A向前方突出，第二旋转轴300A的后部从第一旋转轴200A向后方突出。在第一旋转轴200A固定有滚筒22，在第二旋转轴300A固定有旋转体24。
轴承单元400A固定于外筒20的后表面，通过设置于内部的两个轴承401A、402A，可旋转地对第一旋转轴200A进行支承。
滚筒减速机构部500A包括第一带轮510A、第一电机带轮520A、以及第一传动带530A，将驱动电机100A的旋转减速并传递给第一旋转轴200A。
第一带轮510A固定于第一旋转轴200A的后端部。在第一带轮510A的后表面，形成有环状的被卡合凹部511A。在被卡合凹部511A内的外侧的周面，遍及整周地形成有花键512A。
第一电机带轮520A安装在驱动电机100A的电机轴110A的根部。第一传动带530A架设在第一带轮510A与第一电机带轮520A之间。
翼减速机构部600A包括第二带轮610A、第二电机带轮620A、以及第二传动带630A，将驱动电机100A的旋转减速并传递给第二旋转轴300A。
第二带轮610A经由两个轴承611A、612A与第二旋转轴300A连结，自由旋转地支承在第二旋转轴300A。在第二带轮610A的前表面，形成有环状的被卡合凹部613A。在被卡合凹部613A内的外侧的周面，遍及整周地形成有花键614A。
第二电机带轮620A安装于驱动电机100A的电机轴110A的顶端部。第二传动带630A架设在第二带轮610A与第二电机带轮620A之间。
由于第一电机带轮520A的外径与第二电机带轮620A的外径相等，第二带轮610A的外径比第一带轮510A的外径小，因此翼减速机构部600A的减速比比滚筒减速机构部500A的减速比小。
离合器机构部700A在双轴驱动形态和单轴驱动形态之间切换驱动部30A 的驱动形态，其中，双轴驱动形态是指，通过以使第二带轮610A的旋转能传递给第二旋转轴300A的方式连结第二旋转轴300A和第二带轮610A，使旋转体24以比滚筒22快的旋转速度进行旋转的驱动形态，单轴驱动形态是指，通过以使第一带轮510A的旋转能传递给第二旋转轴300A的方式连结第二旋转轴300A和第一带轮510A，使滚筒22和旋转体24以同一旋转速度进行旋转。
离合器机构部700A包括：离合器导向器(clutch guide)710A、离合器体720A、离合器杆730A、杆支承部740A、以及离合器驱动装置750A。
离合器导向器710A以及离合器体720A配置在第一带轮510A与第二带轮610A之间。离合器导向器710A具有前表面打开的圆筒形状，并以在第二旋转轴300A的轴线方向以及周向上都不可动的方式固定在第二旋转轴300A。
离合器体720A包括离合器部721A、包围部722A、以及轴承723A。离合器部721A具有前表面以及后表面打开的圆筒形状。在离合器部721A的外周面，在前部以及后部分别遍及整周地形成有前花键724A以及后花键725A。
离合器导向器710A插入离合器部721A的内部。离合器部721A的内周面和离合器导向器710A的外周面通过花键结合，离合器部721A相对于离合器导向器710A即固定有离合器导向器710A的第二旋转轴300A，能向第二旋转轴300A的轴线方向移动但是不能旋转。
包围部722A形成为圆环状，以使离合器部721A自由旋转的方式包围离合器部721A的中央部。在离合器部721A与包围部722A之间，以使离合器部721A相对于包围部722A顺利地旋转的方式设置有轴承723A。
离合器杆730A的上端部以相对于包围部722A可旋转的方式与包围部722A连结。此外，离合器杆730A自由转动地支承在设置于杆支承部740A的支轴741A。
离合器驱动装置750A包括促动器751A和操作杆752A。促动器751A使操作杆752A向前后移动。操作杆752A与离合器杆730A的下端部连结。离合器杆730A的下端部相对于操作杆752A可旋转。
在驱动部30A的驱动形态从单轴驱动形态切换至双轴驱动形态的情况下，如图14所示，操作杆752A从促动器751A的内部被推向前方。离合器杆730A 的下端部被操作杆752A推动向前方移动，离合器杆730A以支轴741A为中心向后方旋转。离合器杆730A的上端部向后方移动，离合器体720A被离合器杆730A的上端部推动向后方移动。由此，离合器部721A的后花键725A和第二带轮610A的花键614A卡合。
当后花键725A和花键614A卡合时，由于离合器部721A和第二带轮610A在旋转方向上被固定，因此呈能将第二带轮610A的旋转经由离合器部721A以及离合器导向器710A传递给第二旋转轴300A的状态。在这样的状态下，当驱动电机100A旋转时，该旋转经由翼减速机构部600A传递给第二旋转轴300A，固定于第二旋转轴300A的旋转体24进行旋转。旋转体24以驱动电机100A的旋转速度按照翼减速机构部600A的减速比被降低后的旋转速度进行旋转。此外，驱动电机100A的旋转经由滚筒减速机构部500A传递给第一旋转轴200A，固定于第一旋转轴200A的滚筒22进行旋转。滚筒22以驱动电机100A的旋转速度按照滚筒减速机构部500A的减速比被降低后的旋转速度进行旋转。如上所述，由于翼减速机构部600A的减速比比滚筒减速机构部500A的减速比小，因此旋转体24以比滚筒22快的旋转速度与滚筒22同向旋转。
需要说明的是，由于离合器杆730A与以自由旋转的状态连结有离合器部721A的包围部722A连结，因而即使离合器部721A进行旋转，该旋转产生的转矩也几乎不会传给离合器杆730A。
另一方面，在驱动部30A的驱动形态从双轴驱动形态切换至单轴驱动形态的情况下，如图15所示，操作杆752A被拉入促动器751A的内部。即，操作杆752A向后方移动。离合器杆730A的下端部被操作杆752A拉动向后方移动，离合器杆730A以支轴741A为中心向前方旋转。离合器杆730A的上端部向前方移动，离合器体720A被离合器杆730A的上端部推动向前方移动。由此，离合器部721A的前花键724A和第一带轮510A的花键512A卡合。
当前花键724A和花键512A卡合时，由于离合器部721A和第一带轮510A在旋转方向上被固定，因此呈能将第一带轮510A的旋转经由离合器部721A以及离合器导向器710A传递给第二旋转轴300A的状态。在这样的状态下，当驱动电机100A进行旋转时，该旋转经由滚筒减速机构部500A传递给第一旋转轴200A以及第二旋转轴300A，滚筒22以及旋转体24进行旋转。滚筒22以及旋 转体24以驱动电机100A的旋转速度按照滚筒减速机构部500A的减速比被降低后的旋转速度向一体地同向旋转。
需要说明的是，在单轴驱动形态下，当驱动电机100A进行旋转时，第二带轮610A也随着该旋转而进行旋转。但是，第二带轮610A仅仅是相对于第二旋转轴300A进行空转，第二带轮610A的旋转不会传递给第二旋转轴300A。
<变更例5>
图16是表示变更例5所涉及的驱动部30A的结构的剖视图。在本变更例的驱动部30A中，滚筒减速机构部500A的第一带轮510A变更为第一带轮510B，离合器机构部700A的离合器部721A变更为离合器部721B。驱动部30A通过离合器机构部700A，在双轴驱动形态和滚筒单体驱动形态之间切换驱动形态。在滚筒单体驱动形态下，呈驱动电机100A的旋转传递给滚筒22但不传递给旋转体24，滚筒22进行旋转但旋转体24相对于滚筒22能自由旋转的状态。需要说明的是，滚筒单体驱动形态相当于本发明的第一驱动形态。
具体而言，如图16所示，第一带轮510B未设置设于第一带轮510A的被卡合凹部511A以及花键512A。此外，在离合器部721B，设有后花键725B，但未设置设于离合器部721A的前花键724A。在滚筒单体驱动形态下，离合器体720A向前方移动，后花键725B和花键614A的卡合解除，第二旋转轴300A呈与第一带轮510B和第二带轮610A都不连结的状态。在这样的状态下，当驱动电机100A进行旋转时，由于虽然滚筒22进行旋转，但是带轮510B、610A的旋转都不会传递给第二旋转轴300A，因此旋转体24不旋转。但是，由于第二旋转轴300A相对于第一旋转轴200A可旋转，因此旋转体24呈能自由旋转的状态。
这样，采用在双轴驱动形态和滚筒单体驱动形态之间切换驱动部30A的驱动形态的结构的情况下，在第一洗涤模式下，在洗涤过程和漂洗过程中，驱动部30A以滚筒单体驱动形态被驱动。洗涤运转开始之前的驱动部30的驱动形态设定为滚筒单体驱动形态，从第一洗涤模式的洗涤运转开始到结束，驱动部30A的驱动形态维持在滚筒单体驱动形态。
在第二洗涤模式下，图9(a)的步骤S21和S22的处理变更为从滚筒单体 驱动形态切换为双轴驱动形态的处理，步骤S23和S24的处理变更为从双轴驱动形态切换为滚筒单体驱动形态的处理。
在如本变更例那样，采用在双轴驱动形态和滚筒单体驱动形态之间切换驱动部30A的驱动形态，并且在第一洗涤模式的洗涤过程和漂洗过程中，驱动部30A以滚筒单体驱动形态被驱动的结构的情况下，同样，在滚筒单体驱动形态下，由于旋转体24不会被驱动电机100A旋转，洗涤物不会被旋转的旋转体24的突状部24a积极地摩擦或搅拌，因而能防止洗涤物的损伤。因此，通过本变更例的结构也能执行第一洗涤模式和第二洗涤模式的洗涤运转，能起到和上述实施方式相同的作用效果。
<变更例6>
在如变更例5那样，采用在双轴驱动形态和滚筒单体驱动形态之间切换驱动部30A的驱动形态的结构的情况下，也可以代替离合器机构部700A，采用如图17所示将离合器机构部800A设置于驱动电机100A侧的结构。在这种情况下，不在第二带轮610A设置轴承611A、612A，第二带轮610A以无法旋转的方式固定在第二旋转轴300A。
图17是表示变更例6所涉及的离合器机构部800A的结构的驱动部30A的主要部分的剖视图。图17(a)表示驱动部30A的驱动形态切换至双轴驱动形态的状态，图17(b)表示驱动部30A的驱动形态切换至滚筒单体驱动形态的状态。
在本变更例中，第二电机带轮620A由驱动电机100A的电机轴110A自由旋转地支承。即，第二电机带轮620A经由前后两个轴承621A、622A安装于电机轴110A的大致中央部。第二电机带轮620A通过轴承621A、622A，相对于电机轴110A顺利地进行旋转。在第二电机带轮620A，在后端部的外周面，遍及整周地形成有花键623A。
离合器机构部800A包括：离合器体810A、离合器杆820A、杆支承部830A、以及离合器驱动装置840A。
离合器体810A配置于电机轴110A的第二电机带轮620A的后方，包括离合器部811A、包围部812A、以及轴承813A。离合器部811A构成为具有大致 圆筒形状，并且其前端部814A的外径比前端部814A后方的主体部815A的外径更大。在前端部814A，形成有具有与第二电机带轮620A的后端部的外径大致相等的内径的卡合凹部816A。在卡合凹部816A的内周面，遍及整周地形成有第一花键817A。此外，在主体部815A的内周面，遍及整周地形成有第二花键818A。
在电机轴110A的顶端部，在外周面，遍及整周地形成有花键111A。花键111A的前后尺寸设为比第二花键818A的前后尺寸大。离合器部811A的第二花键818A和电机轴110A的花键111A卡合，通过该卡合，离合器部811A呈能相对于电机轴110A向电机轴110A的轴线方向移动并且能与电机轴110A一同旋转的状态。
包围部812A形成为圆环状，以使离合器部811A自由旋转的方式包围离合器部811A的中央部。在离合器部811A与包围部812A之间，夹有轴承813A，离合器部811A通过该轴承813A，相对于包围部812A顺利地进行旋转。
离合器杆820A具有大致Y字形，其上端部与向包围部812A的左右突出的轴部819A可旋转地连结。此外，离合器杆820A自由旋转地支承在设置于杆支承部830A的支轴831A。
离合器驱动装置840A包括促动器841A和操作杆842A。促动器841A使操作杆842A向前后移动。操作杆842A与离合器杆820A的下端部连结。离合器杆820A的下端部相对于操作杆842A可旋转。
在驱动部30A的驱动形态从滚筒单体驱动形态切换至双轴驱动形态的情况下，如图17(a)所示，操作杆842A被拉入促动器841A的内部。即，操作杆842A向后方移动。离合器杆820A的下端部被操作杆842A拉动向后方移动，离合器杆820A以支轴831A为中心向前方旋转。离合器杆820A的上端部向前方移动，离合器体810A被离合器杆820A的上端部推动向前方移动。由此，离合器部811A的第一花键817A和第二电机带轮620A的花键623A卡合，电机轴110A和第二电机带轮620A以使电机轴110A的旋转传递给第二电机带轮620A的方式连结。
另一方面，在驱动部30A的驱动形态从双轴驱动形态切换至滚筒单体驱动 形态的情况下，如图17(b)所示，操作杆842A被从促动器841A的内部推出。离合器杆820A的下端部被操作杆842A推动向前方移动，离合器杆820A以支轴831A为中心向后方旋转。离合器杆820A的上端部向后方移动，离合器体810A被离合器杆820A的上端部推动向后方移动。由此，离合器部811A的第一花键817A脱离第二电机带轮620A的花键623A，以使电机轴110A的旋转不传递给第二电机带轮620A的方式解除电机轴110A和第二电机带轮620A的连结。
<其它的变更例>
在上述实施方式和变更例1中，在第二洗涤模式的洗涤过程中，使加热器60工作，对外筒20内的水进行加热。但是，在与提高清洗性能相比优先考虑减少耗电量的情况下，在上述实施方式和变更例1的第二洗涤模式的洗涤过程中，也可以设定为不使加热器60工作，不对外筒20内的水进行加热。在这种情况下，在图9(b)中，删除步骤S203至S205的处理，在图10(b)中，删除步骤S203、S204以及S211的处理。
进而，在上述实施方式中，在外筒20内配置有加热器60。但是，只要能加热蓄于外筒20内用于洗涤的水，加热器60也可以设置在外筒20之外。例如，可以在从给水阀51至外筒20的给水路线上设置加热器60，也可以在与外筒20之间设置使水循环的循环路线，并在该循环路线上设置加热器60。
进而，在上述实施方式中，滚筒22以相对于水平方向倾斜的倾斜轴为中心进行旋转。但是，滚筒式洗衣机1也可以采用滚筒22以水平轴为中心进行旋转的结构。
进而，虽然上述实施方式的滚筒式洗衣机1不具备干衣功能，但是本发明也能用于具备干衣功能的滚筒式洗衣机即滚筒式洗衣干衣机。
此外，本发明的实施方式可以在权利要求范围所示出的技术思想的范围内适当地进行各种变更。

Claims (4)

  1. 一种滚筒式洗衣机，其特征在于，
    具备：外筒，配置在机壳内；
    滚筒，配置在所述外筒内，能以水平轴或相对于水平方向倾斜的倾斜轴为中心进行旋转；
    旋转体，配置在所述滚筒内，表面具有与洗涤物接触的突状部；
    驱动部，能以第一驱动形态和第二驱动形态进行工作，其中，所述第一驱动形态是使所述滚筒和所述旋转体以同一旋转速度一体旋转或使所述滚筒旋转并且使所述旋转体呈自由旋转状态的驱动形态，所述第二驱动形态是使所述滚筒和所述旋转体以相互不同的旋转速度旋转的驱动形态；
    加热器，将蓄于所述外筒内用于洗涤的水加热；以及
    控制部，至少执行第一洗涤模式和第二洗涤模式的洗涤运转，
    所述控制部以如下方式进行控制：
    在所述第一洗涤模式的洗涤过程中，以所述第一驱动形态使所述驱动部工作，并且使所述加热器工作，
    在所述第二洗涤模式的洗涤过程中，以所述第二驱动形态使所述驱动部工作，并且以与所述第一洗涤模式相比赋予水的热量变小的方式使所述加热器工作或不使所述加热器工作。
  2. 根据权利要求1所述的滚筒式洗衣机，其特征在于，
    还具备温度传感器，检测蓄于所述外筒内由所述加热器加热后的水的温度，所述控制部以如下方式进行控制：
    在所述第一洗涤模式的洗涤过程中，以使所述温度传感器的检测温度达到第一目标温度的方式使所述加热器工作，
    在所述第二洗涤模式的洗涤过程中，以使所述温度传感器的检测温度达到低于所述第一目标温度的第二目标温度的方式使所述加热器工作。
  3. 根据权利要求1所述的滚筒式洗衣机，其特征在于，
    还具备温度传感器，用于检测蓄于所述外筒内由所述加热器加热后的水的温度，
    所述控制部以如下方式进行控制：
    在所述第一洗涤模式的洗涤过程中，以使所述温度传感器的检测温度达到目标温度的方式使所述加热器工作，并且在达到所述目标温度之后，以使所述温度传感器的检测温度维持所述目标温度的方式控制所述加热器，
    在所述第二洗涤模式的洗涤过程中，以使所述温度传感器的检测温度达到所述目标温度的方式使所述加热器工作，并且在达到所述目标温度之后，使所述加热器停止。
  4. 根据权利要求1至3的任一项所述的滚筒式洗衣机，其特征在于，
    还具备脏污传感器，用于检测洗涤物的脏污程度，
    所述控制部在所述第二洗涤模式的洗涤过程中，在通过所述脏污传感器检测到的脏污程度为规定的阈值以上的情况下使所述加热器工作，在通过所述脏污传感器检测到的脏污程度小于所述阈值的情况下不使所述加热器工作。
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