TW201433670A - Drum-type washing machine - Google Patents

Abstract

To provide a drum-type washing machine with a simple structure capable of reducing power consumption while improving the cleanness of a drum and an outer tank. A drum-type washing machine comprises: an outer tank supported in a housing, for storing water inside a drum encompassed by the outer tank for containing laundry a driving device for rotationally driving the drum a control part for controlling the driving device and water supply means for supplying water to the outer tank, thereby implementing washing and rinsing processes. The rinsing process comprises the step of continuously rotating the drum with water being stored in the outer tank by the water supply means. After discharging a portion of rinsing water used in the rinsing process, the control part implements arc rotation, i.e. rotating the drum less than one rotation with a part of the drum being immersed in the remaining water. The arc rotation is a rapid arc rotation in which the drum is accelerated in an acceleration higher than that at the start of the continuous rotation or the drum is stopped in a brake time shorter than that when the continuous rotation is stopped.

Description

Drum washing machine

The present invention relates to a drum type washing machine.

In the drum type washing machine, since the inner tank and the outer tank adhere to dirt, there is a model in which a program for washing the tank other than the washing operation can be set. However, in the procedure in which the tank is washed for the purpose, the medicine for washing is required; in addition, the user must select the operation of the tank washing program, and the washing operation is complicated.

On the other hand, in the upright type washing machine, the washing liquid such as water is ejected from the supply pipe toward the inner wall surface of the outer tub, and is also ejected toward the outer side surface of the inner tank to remove the soap residue adhering to the wall surface. A technique such as a material has been proposed (see Patent Document 1).

In addition, in order to improve the washing performance of the clothes, a drum type washing machine in which the rapid arc rotation and the sudden braking of the drum are repeated is also proposed (see Patent Document 2).

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. Hei 5-253392

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2008-194255

However, in the technique described in Patent Document 1, it is necessary to separately provide a supply pipe and an injection hole for the cleaning liquid, and the structure thereof is complicated. Further, in the technique described in Patent Document 2, during the washing course, the vehicle is suddenly accelerated or braked in a state in which a large amount of water is accumulated, so that the resistance between the water and the water is large, and the rotation speed of the drum is caused. Slower, if you want to increase the rotation speed of the drum in this state, there will be a problem of overload operation or an increase in the consumption of the motor.

The present invention has been made to solve the above problems; the object of the present invention is to provide a drum type washing machine which improves the cleanliness of the drum and the outer tub with a simple configuration and reduces the power consumption.

A drum type washing machine according to the present invention includes: an outer tub supported in a casing and accumulating water therein, a drum housed in the outer tub and containing laundry, a driving device that rotationally drives the drum, and a control device a control unit for driving the device, and a water supply means for supplying water in the outer tank, and having a washing stroke and a washing stroke. The drum type washing machine is characterized in that the washing course has a water supply means in the outer tank In the state in which water is accumulated in the inside, the stroke of continuously rotating the drum is discharged After a part of the washing water used in the cleaning stroke, the control unit performs a state in which the drum is held in a state of being less than one week while the water remaining in the outer tank is held by a part of the drum. The circular arc rotates, and the arc rotation is accelerated by an acceleration faster than the start of the continuous rotation, or is a sudden arc rotation that is stopped at a shorter braking time than when the continuous rotation is stopped.

According to the present invention, it is possible to provide a drum type washing machine which can improve the cleanliness of the drum and the outer tub with a simple configuration and reduce the power consumption.

1‧‧‧ frame

10, 10A‧‧‧ slot

10b‧‧‧balanced ring

10d‧‧‧throttle (side of the front end)

12‧‧‧Water supply unit (water supply means)

12e‧‧‧Slot cleaning water supply solenoid valve (water supply means)

20, 20A‧‧‧ outer trough

21, 21A‧‧‧ outer trough body

22, 22A‧‧‧ outer trough cover

24a2‧‧‧Drainage hole (outlet)

54‧‧‧Different joints (differentiation)

55‧‧‧Washing water supply pipe (washing water supply piping)

56‧‧‧Drainage pipe (drainage pipe)

60‧‧‧Control device

70‧‧‧Water Department

72‧‧‧ trough washing water level

73‧‧‧Right rotation

74‧‧‧Rotation angle

75‧‧‧ Left rotation

M‧‧‧Motor (drive unit)

S1‧‧‧Drum type washing and drying machine

Fig. 1 is a perspective view showing the appearance of a drum type laundry dryer according to a first embodiment.

Fig. 2 is a side view showing the internal structure of the drum type laundry dryer of the first embodiment.

Fig. 3 is a perspective view showing the internal structure of the drum type laundry dryer of the first embodiment.

Fig. 4 is a rear elevational view showing the internal structure of the drum type laundry dryer of the first embodiment.

Fig. 5 is a perspective view showing a state in which the water supply solenoid valve and the washing water supply pipe and the drain pipe are connected.

Figure 6 is a longitudinal sectional view of the outer tank water supply joint.

Fig. 7 is a side view showing the positional relationship between the washing water supply pipe and the drain pipe.

Fig. 8 is a plan view showing a tank washing stroke of the drum type laundry dryer of the first embodiment.

Fig. 9 is a plan view showing a tank washing stroke of the drum type laundry dryer of the first embodiment.

Fig. 10 is a block diagram showing a drum type laundry dryer.

Fig. 11 is a flow chart showing main control at the time of operation of the drum type laundry dryer.

Fig. 12 is a flow chart showing the control in the tank washing course.

Fig. 13 is a flow chart showing the control in the dehydration process.

Fig. 14 is a total travel chart showing the opening and closing operations of various water supply solenoid valves.

Fig. 15 is a view showing a water-receiving portion attached to the back surface of the drum.

Fig. 16 is a view showing a detail of a water pumping unit;

[Formation for carrying out the invention]

Hereinafter, the form for carrying out the invention (hereinafter referred to as "the embodiment") will be described in detail with reference to the appropriate drawings. Further, a drum type washing and drying machine (hereinafter referred to as a washing machine) capable of performing a stroke from washing to drying will be described below by way of example. In addition, in the following, the direction in which the washing and drying machine S1 is viewed from the front is used as a reference.

(First embodiment)

As shown in Fig. 1, the laundry dryer S1 of the first embodiment is configured such that the outer casing is a frame 1 composed of a combination of a steel plate and a resin molded article, and the frame 1 is attached to the upper surface of the base 1h.

The casing 1 is composed of left and right side plates 1a and 1b (1b with reference to Fig. 4), a front cover 1c, a back cover 1d (see Fig. 2), an upper cover 1e, and a lower front cover 1f. The left and right side panels 1a, 1b are formed as " The upper type reinforcing material (not shown), the front reinforcing material (not shown), and the rear reinforcing material (not shown) are combined, and the base 1h is formed to form a box-shaped frame 1 as a frame. The body has sufficient strength.

At the center of the front cover member 1c, there is a door body 2 for accommodating an input port for taking out laundry (washing matter, drying object). The door body 2 is configured to be freely opened and closed by a hinge provided on the front reinforcing member. The front cover member 1c adjacent to the door body 2 is provided with a door opening button 3 for releasing a lock mechanism (not shown) of the door body 2. The door opening button 3 is pressed, the lock mechanism (not shown) is unlocked to open the door body 2, and the door body 2 is pressed against the front cover member 1c to be locked and closed. The front reinforcing member (not shown) and the opening 20b (see FIG. 3) of the outer tub 20 (see FIG. 2) to be described later have a circular opening for taking out the laundry in a concentric manner.

At the center of the upper portion of the casing 1, an operation panel 4 including a power switch 4a, operation switches 4b, 4c, a display 4d, and the like is provided. The operation panel 4 is electrically connected to a control device 60 (see FIGS. 2 and 3) provided at a lower portion of the casing 1. And, at the left side of the operation panel 4, there is provided for washing Pull-out tray 5 for agents and softeners.

Further, on the right side of the operation panel 4, a pull-out type drying filter 6 is provided. The drying filter 6 is configured to include a filter 6a (see FIG. 3) in a mesh format, and can remove the wire residue. The cleaning of the drying filter 6 is performed by pulling out the drying filter 6, and taking out the filter 6a (see FIG. 3) of the mesh format. Further, the upper cover member 1e is provided with a water supply pipe connection port 7a that is taken out from the faucet, and a suction pipe connection port 7b that sucks the remaining water of the bathtub.

As shown in FIG. 2, the washing and drying machine S1 is provided with an inner tank (rotary drum) 10 as a washing and dewatering tank which is supported in a rotatable cylindrical shape in the casing 1. The inner tank 10 has an opening 10a for taking out the laundry on the front side (operating side) end surface, and has a through hole (not shown) for a large amount of water and ventilation on the peripheral wall surface.

An edge of the opening 10a is provided with a balance ring (also referred to as a fluid balancer) 10b that is integrated with the inner groove 10. The balance ring body 10b is configured to enclose a fluid having a large specific gravity in the inside thereof, and when the inner groove 10 rotates due to the deviation of the laundry, the center of the groove 10b is offset from the center by the movement of the fluid in the balance ring body 10b. The state has the effect of maintaining the balance of rotation.

In the inner peripheral wall of the inner tank 10, a plurality of lifters 10c extending in the depth direction (axial direction) are provided. When the inner tub 10 starts to rotate during washing and drying, the clothes 10 and the like are repeatedly carried by the lifter 10c and the centrifugal force along the peripheral wall surface, and then the action is dropped by gravity. The rotation center O1 of the inner tank 10 is inclined so as to gradually increase toward the opening 10a side.

Further, the washing and drying machine S1 includes a cylindrical outer groove 20 that is opened in the front surface, and the outer groove 20 encloses the inner groove 10 in the concentric shape. The outer groove 20 is composed of an outer groove body 21 and an outer groove cover member 22. An opening (not shown) on the front surface of the outer tank main body 21 is provided with an outer tank cover member 22 made of synthetic resin, so that water can be stored in the outer tank 20. At the center of the front side (operation side) of the outer tank cover 22, an opening (not shown) for taking out the laundry is formed. The opening 22a and the opening provided in the front reinforcing material are connected by a filler (not shown) made of gum. This filler 23 serves to maintain the watertightness of the outer tank 20 and the door body 2. This prevents water leakage during washing, washing and dehydration. At the lowermost portion of the bottom surface of the outer tub 20, a drain port 20c is provided which is connected to the drain pipe 8.

The front end portion of the drain pipe 8 is connected to the drain hole 101 provided on the floor G. Further, in the drain pipe 8, a drain valve V is provided, and the drain valve V is closed and supplied with water to accumulate water in the outer tank 20; the water in the outer tank 20 is opened by opening the drain valve V Exhausted from the machine.

Further, in the washing and drying machine S1, a motor M for rotationally driving the inner tub 10 is attached to the center (bottom center of the bottom surface) of the outer tub 20. Further, the rotating shaft m1 of the motor M penetrates the outer groove 20 and is coupled to the metal flange 10e provided on the back surface of the inner groove 10. Further, the lower portion of the outer tank 20 is supported by a plurality of support members 9 (constructed by a coil spring and a damper), and the lower sides of the plurality of support members 9 are fixed to the base 1h. Further, the upper portion of the outer tub 20 is supported by an auxiliary spring (not shown) attached to the upper reinforcing member to prevent the outer tub 20 from falling in the front-rear direction.

Further, the washing and drying machine S1 is provided with a blowing duct (air blowing path) 30 that passes through the inside of the back surface and the inside of the upper side of the casing 1. The air supply duct 30 has a duct 32 extending in the vertical direction on the back side of the outer tank 20, and a duct 33 extending forward from the rear on the upper surface side of the outer tank 20.

In the lower portion of the pipe 32, a pipe fitting 15 for overflowing is connected so that the downstream of the drain valve V and the drain pipe 8 merge. The upstream end of the pipe member 15 is connected so as to be located above the stretchable member 31 to be described later.

On the downstream side of the duct 33, a blower unit 40 including a fan 41 (air blowing means) and a heater 42 (heating means) is provided.

Further, although not shown, a stainless steel plate body (heat exchange plate) in which a plurality of projections are formed is provided as a water-cooling dehumidification mechanism in the pipe line 32, and cooling water for flowing down the wall surface is connected to the plate body. Water supply pipe (not shown). When the cooling water supply solenoid valve 12d to be described later is opened, the effect of water cooling and dehumidification can be exhibited.

The lower portion of the air supply duct 30 (the duct 32) is connected substantially horizontally with the elastic member 31 of the flexible structure at the outlet 20d provided at the lower portion of the back surface of the outer tub 20.

As shown in FIG. 3, the fan 41 is called a turbo fan, and is configured such that an impeller (not shown) including a plurality of blades is housed in the fan case 41a, and a vortex is formed around the impeller. A spiral (vortex) flow path (not shown). Further, on the outer surface of the fan case 41a, an intake hole (not shown) for taking in air is formed on one side of the center of rotation of the impeller, and a motor for rotating the impeller at a high speed is attached to the other side. M1.

The heater 42 (see FIG. 2) is constituted by a PTC (Positive Temperature Coefficient) heater or the like, and is provided on the flow side of the spiral flow path in the fan case 41a. Further, a discharge port (not shown) for feeding hot air (air for drying) generated by the heater 42a is formed in the fan case 41a on the downstream side of the heater 42.

The line 33 (see FIG. 2) is provided with a filter line 33a, and an opening is provided in the front surface of the filter line 33a, and a pull-out type drying filter 6 is inserted into the opening. The downstream side of the drying filter 6 is connected to an intake hole (not shown) of the blower unit 40, and a hot air duct 35 and a telescopic joint are sequentially connected to a delivery port (not shown) of the blower unit 40. The member 36 blows the nozzle 37 by hot air.

The washing and drying machine S1 is provided with a circulation pump P and circulation pipes H1 and H2, and has a function of circulating the accumulated water in the outer tank 20. The circulation pump P is disposed below the outer tank 20, and the inlet port is connected to the bottom of the outer tank 20 via the circulation pipe H1; the outlet port is connected to the side of the outer tank cover 22 via the circulation pipe H2. Thereby, the water stored in the outer tank 20 is circulated by the circulation pump P, and is sprayed on the upper portion H3 direction of the laundry in the inner tank 10 and the H4 direction between the inner tank 10 and the outer tank 20 to constitute .

As shown in FIG. 4, a water supply unit 12 including five water supply solenoid valves T, a bath water supply pump U, a water supply path unit (not shown), and the like is provided behind the tray 5 (see FIG. 1) (see FIG. 1). Water supply means). The five water supply solenoid valves T are equipped with a detergent water supply solenoid valve 12a, the most The final treatment agent water supply solenoid valve 12b, the outer tank water supply solenoid valve 12c, the cooling water supply solenoid valve 12d, and the tank washing water supply solenoid valve 12e (water supply means).

The detergent water supply solenoid valve 12a supplies water to the detergent supply chamber (not shown) of the tray 5 (see FIG. 3) through a water supply path (not shown) through a tap water flow from the water supply pipe connection port 7a. The tap water injected into the detergent supply chamber and the detergent to be placed are injected into the outer tank 20 through a pipe (not shown).

The final treatment liquid supply solenoid valve 12b is a final treatment agent injection chamber (not shown) that injects tap water flowing from the water supply pipe connection port 7a into the tray 5 (see FIG. 3) through a water supply path (not shown). The tap water injected into the final treatment agent supply chamber and the final treatment agent to be placed are simultaneously injected into the outer tank 20 through a pipe (not shown).

The outer tank water supply solenoid valve 12c is configured to inject the tap water flowing from the water supply pipe connection port 7a through a water supply path (not shown) into the outer tank 20 from a water injection pipe (not shown).

The cooling water supply solenoid valve 12d is a water-cooling dehumidifying mechanism (not shown) that injects tap water flowing from the water supply pipe connection port 7a into the air supply pipe 30 (see FIG. 2) through a water supply path (not shown).

In the tank washing water supply solenoid valve 12e, the tap water flowing from the water supply pipe connection port 7a is injected into the outer tank through a water supply path (not shown) through the washing water supply pipe 55 (washing water supply pipe) shown in Fig. 5 . Cover member 22 side (water path member not shown).

In addition, the bath water which is pumped by the bath water supply pump U and flows from the suction pipe connection port 7b is a water supply path which is not shown. Water is supplied from the water injection pipe (not shown) in the outer tank 20.

As shown in FIG. 5, the five water supply solenoid valves T that are connected to each other are disposed on the left side of the upper portion of the outer tank 20. Further, in Fig. 5, a state in which only five water supply solenoid valves T that have been taken out from the water supply unit 12 (see Fig. 4) are drawn is shown.

The delivery port (not shown) of the tank washing water supply solenoid valve 12e is connected to the branch joint 54 via a sealing member (such as a ring or the like) (not shown), and the front end of the branch joint 54 is connected to the washing water. One end of the supply pipe 55 and the side surface (peripheral surface) of the branch joint 54 are connected to the drain pipe 56 (drain pipe).

The washing water supply pipe 55 extends forward along the outer tank main body 21, and is stretched so as to be bent at the center in the left-right direction at the position of the outer tank cover 22, and is connected to the outer tank by a sealing member (not shown). A water supply port (not shown) of the apex portion (center portion) of the cover member 22.

The drain pipe 56 extends downward from the branch joint 54 and is bent to extend rearward, and is connected to the outer tank water supply joint 24 provided at the rear of the outer side surface of the outer tank 20 (outer tank body 21). Further, the outer tank water supply joint 24 is connected to a bellows (not shown) via a detergent supply chamber (not shown) that communicates with the tray 5 and a final treatment agent supply chamber (not shown).

As shown in Fig. 6, the outer tank water supply joint 24 is composed of a joint 24a connected to the outer tank main body 21 and a joint 24b connected to the bellows, and is assembled to have an L-shape when viewed in a side cross section. And, at the boundary between the flow path formed by the joint 24a and the flow path formed by the joint 24b, A rubber check valve 24c is provided. The check valve 24c is capable of passing only the fluid from the flow path on the side of the joint 24b to the flow path on the side of the joint 24a, and the steam generated in the outer tank 20 when the drying stroke described later is blocked flows from the joint 24a to the joint. 24b.

Further, the drain pipe 56 is connected to the upper portion of the joint 24a. The joint 24a is formed with a cylindrical pipe connecting portion 24a1 to which the drain pipe 56 is connected. A drain hole 24a2 that communicates with a flow path inside the joint 24a is formed at the bottom of the pipe connecting portion 24a1. Further, the drain hole 24a2 corresponds to a discharge port to which the drain pipe 56 (drainage pipe) is connected.

As shown in FIG. 7, the washing water supply pipe 55 and the drain pipe 56 are located above the drain pipe 56 in the vertical direction (up-and-down direction). Thereby, the residual water in the washing water supply pipe 55 is discharged into the outer tank 20 via the drain pipe 56, and the inside of the washing water supply pipe 55 can be prevented from being blocked by freezing of the residual water.

Next, the operation of the laundry dryer S1 of the present embodiment will be described. First, the overall configuration of the laundry dryer S1 of the present embodiment will be briefly described. As shown in FIG. 10, the control device (microcomputer) 60 is constituted by a CPU (Central Processing Unit), a ROM (read only memory) in which a program is stored, a RAM (Random Access Memory), an input/output circuit, and the like; The operation button input circuit 62 connected to the various switches 4b and 4c, the water level sensor 63, the temperature sensor 64, and the vibration sensor 65 are connected to obtain various information of the user's button operation, the washing stroke, and the drying stroke. Signal. Further, the temperature sensor 64 is a temperature sensor including an outside air temperature sensor that detects an outside air temperature and a temperature that detects the drain port 20c.

Further, the control device 60 controls the rotation speeds of the respective water supply solenoid valves 12a to 12e, the bath water supply pump U, the drain valve V, and the motor M (the rotational speed of the inner tank 10) and the fan 41 through the respective drive circuits 66. The rotation speed and the energization (ON/OFF) of the heater 42. Further, the control device 60 controls the display 4d, the light-emitting diode 67, and the buzzer 68 for notifying the user of the operating state of the washing machine S1.

The control device 60 is activated after the power switch 4a is pressed and the power is turned on. For example, the basic control processing program for performing the washing and drying shown in Figs. 11 to 13 is executed. Further, a case in which a series of operations from washing to drying will be described below with reference to FIGS. 11 to 14 .

As shown in FIG. 11, the control device 60 is a washing stroke (step S100), a washing course (step S200), a tank washing course (step S300), a dehydrating stroke (step S400), and a drying stroke (step S500). Execute in order.

As shown in Fig. 14, in the cloth amount detecting stroke (S100-S1) of the washing stroke (S100), the control device 60 is the rotating inner tank 10, and the cloth amount is calculated for the clothes before the water injection. Further, the cloth amount is calculated based on the rotational speed and current value of the motor M, and the weight of the laundry in the inner tub 10 is calculated. If the weight of the laundry increases, the load for rotating the inner tub 10 becomes large, and more motor current flowing to the motor M is required, so that the weight of the laundry can be calculated from the motor current and the rotational speed of the motor M. . Further, the groove rotation speed shown in the table of Fig. 14 is 25 to 45 rpm, which is the rotation speed at the time of rotation of the inner groove (except for dehydration).

In the detergent dissolution water supply stroke (S100-S2), the control device At 60, the detergent water supply solenoid valve 12a is opened, and tap water is supplied to the detergent supply chamber (not shown) of the tray 5. The tap water injected into the tray 5 is filled into the outer tank 20 via a bellows (not shown) and an outer tank water supply joint 24 while dissolving the detergent. Further, the control device 60 closes the detergent water supply solenoid valve 12a after it has been opened for a predetermined period of time.

In the rotary water supply stroke (S100-S3), the control device 60 drives the circulation pump P while rotating the inner tank 10 while maintaining the valve opening state of the detergent water supply solenoid valve 12a, and the washing water (high concentration) The detergent solution) is circulated and distributed on the side of the clothes to supply water. Moreover, here, the inner tank 10 is rotated at a predetermined rotational speed. Further, the control device 60 closes the detergent water supply solenoid valve 12a after the end of the rotary water supply.

Among the pre-washing strokes (S100-S4), the control device 60 washes the laundry with a high-concentration detergent solution.

In the cloth quality detecting stroke (S100-S5), the control device 60 calculates the weight of the laundry including the state of the water. Thereafter, the control device 60 determines the clothing type by the weight of the laundry calculated by the cloth amount detecting stroke (S1) and the weight of the laundry containing the water state calculated by the cloth quality detecting stroke (S5). Cloth (water absorption). The following stroke is performed in accordance with the determined cloth quality of the laundry.

In the replenishment water supply stroke (S100-S6), the control device 60 combines the weight of the laundry calculated by the cloth amount detecting stroke (S1) with the fabric quality of the clothing determined by the cloth quality detecting stroke (S5). The outer tank water supply solenoid valve 12c and the tank washing water supply solenoid valve 12e are opened, and the outer tank 20 is opened. Internal water supply. For example, if the water absorption of the towel fabric is high, the washing water is replenished during the water supply stroke. When the water supply is completed, the control device 60 closes the outer tank water supply solenoid valve 12c and the tank washing water supply solenoid valve 12e. In the replenishing water supply stroke, the water supply solenoid valve 12e is washed by the open tank, and the washing water is sprayed from the outer tank cover side nozzle (not shown), and the previous washing stroke can be attached to the outer tank cover member 22 The inner upper portion and the detergent component of the front end side portion of the inner tank 10 are discharged.

In the main washing course (S100-S7), the control device 60 washes the laundry while rotating the inner tub 10 in both the left and right directions. After the main washing is finished, the unbalanced state of the clothes is monitored to determine whether or not to move to dehydration.

In the washing course of step S200, the washing 1 stroke and the washing 2 stroke are performed. That is, in the draining stroke (S200-S8) of the washing 1, the control device 60 opens the drain valve V and discharges the washing water in the outer tub 20. Further, the determination of the end of the drainage is performed based on the detected value of the water level detector.

In the dehydration process (S200-S9), after the draining is completed, the control device 60 rotates the inner tub 10 at a high speed to perform dehydration of the washing water contained in the laundry. Further, the rotation speed of the inner tank 10 at the time of dehydration is set to, for example, 1000 rpm or more.

In the rotary shower stroke (S200-S10), the control device 60 closes the drain valve V and opens the outer tank water supply solenoid valve 12c to supply the washing water to the outer tank 20. And, while rotating the inner tank 10, driving the cyclone pump P, the washing water is sprayed on the laundry in the inner tank 10 The upper H3 direction and the H4 direction between the inner groove 10 and the outer groove 20. Thereby, the dirt between the inner tank 10 and the outer tank 20 is washed while the laundry is washed.

In the dehydration stroke (S200-S11), the control device 60 rotates the inner tank 10 at a high speed, stops the circulation pump P, and dehydrates the laundry water.

In the rotary shower stroke (S200-S12), the control device 60 rotates the inner tub 10 and drives the circulation pump P again to wash the water into the upper H3 direction of the laundry in the inner tank 10 and the inner tank. 10 is sprayed with the H4 direction between the outer tank 20.

In the draining stroke (S200-S13) of the washing 2, the control device 60 stops the inner tank 10 and the circulation pump P, opens the drain valve V, and drains the washing water in the outer tank 20.

In the dehydration process (S200-S14), after the draining is completed, the control device 60 rotates the inner tank 10 at a high speed to dehydrate the water (washing water) contained in the laundry.

In the water supply stroke (S200-S15), the control device 60 closes the drain valve V and opens the tank washing water supply solenoid valve 12e to supply the washing water to the outer tank 20. The control device 60 closes the tank washing water supply solenoid valve 12e after the water supply is completed. By supplying water in the open tank washing water supply solenoid valve 12e during the water supply stroke, dirt adhering to the upper portion of the outer tank cover 22 during the washing stroke can be removed.

In the final treatment water supply stroke (S200-S16), the control device 60 opens the final treatment liquid supply solenoid valve 12b to the external tank. 20 supplies the rinse water containing the final treatment agent. The control device 60 closes the final treatment liquid supply solenoid valve 12b after the final treatment liquid supply is completed.

In the rotary water supply/replenishment water supply stroke (S200-S17), the control device 60 opens the outer tank water supply solenoid valve 12c and the tank washing water supply solenoid valve 12e to supply the washing water to the outer tank 20. In addition, when the clothes having high water absorption are placed, and the amount of water supply is insufficient, the washing water is replenished. The water level at this time varies depending on the amount of the clothes, and the maximum is the water level 71 when the water supply amount is 11.5 liters (refer to Fig. 8). In addition, in the state where the washing water is accumulated in the outer tank 20, the control device 60 rotates the inner tub 10 and kneads the clothes while washing. Further, at this time, the rotation speed of the inner tank 10 is set to 35 to 45 rpm.

Among the tank washing strokes (S300-S18), the steps shown in Fig. 12 are executed. As shown in FIG. 12, in step S301, the control device 60 opens the drain valve V and discharges a part of the washing water in the outer tank 20, and in step S302, determines whether the water level is lowered to the inner tank 10. The tank washing water level 72 (see Fig. 8) having a height of about 25% in the vertical direction, if the tank washing water level 72 has been reached, closes the drain valve V in step S303. The judgment of the end of the drainage is performed based on the detected value of the water level detector.

Next, in step S304, the inner tank 10 is rotated right (73), and the rotation angle (74) is set to 45 degrees or more and 180 degrees or less to perform the rapid arc rotation which is rapidly accelerated and stopped by the sudden braking. The sharp arc rotation here is at least the rotary stroke (S200-S10) or the rotary stroke In (S200-S12), the inner groove is accelerated at an acceleration faster than when the continuous rotation starts, and is stopped at a shorter braking time (time from deceleration to stop) than when the continuous rotation is stopped. Moreover, the maximum rotation speed of the inner tank is set to 40 to 60 rpm. The rotation angle is set in accordance with the elapsed time in step S305, and the process proceeds to step S306 after a predetermined time, and the rotation of the inner tank 10 is stopped by the sudden braking.

After the rotation of the inner tank 10 is stopped, the inner tank 10 is rotated to the left in the opposite direction (75), and similarly, the rotation angle (74) is set to be 45 degrees or more and 180 degrees or less to perform the rapid acceleration rotation and the sudden braking. The sudden arc rotation of the stop is performed (steps S307 to S310). The left and right acute arc rotations, which are performed with a predetermined angular range, are alternately repeated for a predetermined number of times or for a predetermined time.

In addition, the rotation angle at the time of the rapid arc rotation is not limited to the above, and may be set to 180 degrees or more in order to increase the maximum rotation speed. Further, the maximum rotation speed of the inner tub 10 when the rapid arc is rotated is 20 rpm (the number of rotations per minute) or more, and is desirably 45 rpm or more. The time from the start of the rotation of the rapid arc rotation to the predetermined rotation speed is 0.5 to 4 seconds, preferably 2 seconds or less, and the braking time until the end of the sudden braking is 0.5 to 5 seconds, and it is expected to be 3 seconds. The following is better. Rotate left and right to repeat 30 to 240 seconds interactively.

Further, the acceleration at the time of the rapid arc rotation is set to, for example, 10 rpm/s (rotation speed per second) or more, and more preferably set to 40 rpm/s or more. The upper limit of the acceleration is preferably 70 rpm/s or less in consideration of the performance of the motor used and the vibration during operation. to In the rotary shower stroke, the inner tank 10 is accelerated by an acceleration faster than when the continuous rotation is performed, or is stopped by braking with a shorter braking time than when the continuous rotation is stopped. Further, the tank washing water level 72 is preferably set to be 5% or more and 30% or less from the bottom of the inner tank 10 when the inner tank 10 is stopped, and is preferably set to a water level of at least the water level of the inner tank 10.

Thereby, the water level is lowered and the contact area of the inner tank 10 and the water is reduced, so that the resistance of the inner tank 10 and the water is reduced, and the load of the motor M is reduced, so that the power consumption can be reduced. Further, the drive mechanism is a belt drive type that is connected to the rotary shaft m1 of the inner tank 10 via the roller and the belt by the drive shaft of the motor M unless it is connected to the direct drive type of the rotary shaft m1 of the inner tank 10. In the case of overload operation due to rapid acceleration or sudden braking, there are problems such as belt slippage, belt wear, abnormal noise, etc., but by lowering the water level in the outer tank 20, water is caused. After the resistance is reduced, the emergency braking of the inner tank 10 and the rapid acceleration are performed, so that the overload operation is not easy, and the above problem can be suppressed.

Further, by reducing the amount of water in the outer tub 20, the rotational speed of the inner tub 10 can be increased without increasing the load of the motor M. When the rotation speed of the inner tank 10 is increased, the water in the outer tank 20 is wound up, and the effect of washing the upper portion of the outer tank 20 is increased, and the relative speed of the inner tank 10 and water is also increased. The detergency of 10 will increase. Further, by increasing the rotational speed of the inner tank 10, the water between the inner tank 10 and the outer tank 20 flows due to the unevenness of the dehydration hole or the like existing on the outer side of the inner tank 10 and the viscosity of the water, and the outer tank The relative speed between 20 and water will increase and the detergency of the outer tank 20 will also be Will improve.

When the inner tank 10 is rotated, a flow of water is generated between the outer tank 20 and the inner tank 10 in response to the rotation direction, and the relative speed with the outer peripheral wall of the inner tank 10 and the water forming the water flow becomes smaller at a constant speed. . Thus, if the inner tank 10 is rapidly accelerated, the rotational speed of the inner tank 10 rises sharply with respect to the water that stays due to inertia. Further, when the inner tank 10 is suddenly braked, the flow of water that continues to flow due to inertia with respect to the inner tank 10 that is suddenly stopped flows at a high speed. That is, by rapidly accelerating or braking the inner tank 10, not only the tank washing action for lifting the water but also the relative speed of the water in the inner tank 10 and the outer tank 20 can be increased, so that the inner tank is improved. The dirt adhering to the outer peripheral wall and the front surface of the balance ring body is increased, and the groove washing power can be improved.

Further, although it is possible to rotate more than one rotation without rotating the circular arc, in order to obtain a high groove cleaning force when the inner tank 10 is suddenly braked or accelerated as described above, the inner tank 10 is not fully filled. By rotating the circular arc in one rotation mode, the number of times of sudden braking and rapid acceleration in a predetermined period of time can be increased, and the time for the tank washing stroke can be shortened and the amount of consumed electricity can be reduced.

Further, the rapid acceleration performed after the sudden braking of the inner tank 10 is repeated in a single direction, and the acceleration is accelerated in the opposite direction after the sudden braking, because the rotation of the inner groove 10 becomes the same as that generated at the bottom of the outer tank 20. Since the direction of the water flow rotates in the opposite direction, the relative speed of the water in the inner tank 10 and the outer tank 20 can be increased, and a high tank washing effect can be obtained. Therefore, the shorter the stop time of the inner tank 10 is, the better, and the inner tank 10 is made by the sudden braking. Immediately after the rotation stops, it is better to accelerate it in the opposite direction.

In addition, the water accumulated in the lower portion of the outer tank 20 is lifted by the unevenness of the dehydration hole or the like existing on the outer side of the inner tank 10, and is brought up to the bottom surface and the side surface of the outer tank 20 to be carried along. The upper flow water of the outer tank 20 is washed to remove the dirt and waste adhering to the inner surface of the outer tank cover 22 and the front surface of the inner tank 10, thereby improving the detergency of the outer tank 20.

In addition, in order to make the water between the inner tank 10 and the outer tank 20 simpler to be lifted, the machine of the water-removing portion 70 (see FIGS. 15 and 16) formed by providing projections on the back surface of the inner tank 10 is used. force. The water-removing portion 70 is formed in a shape extending in the radial direction in the vicinity of the outer peripheral side of the flange of the bottom surface of the inner groove 10. If the water is hit to the surface of the water, a water flow is generated, whereby a strong force is applied to enable the outer groove 20 The dirt is further removed.

Further, in the present embodiment, the tank washing stroke is performed after the second washing step as the last washing, but the tank washing can be performed even if the tank washing stroke is performed after the main washing stroke or the washing one stroke. Effect.

Further, in the tank washing course, since the washing effect of the laundry may be also present, it may be carried out as part of the washing course. For example, if the tank washing course or the like is performed immediately after the water supply stroke (S200-S15), the tank washing effect can be obtained even between the washing strokes. If the washing is performed several times and the tank is washed in the second and subsequent washings, the dirt contained in the washing water is reduced, and it is suitable for tank washing.

Further, in the present embodiment, in the tank washing course, A part of the washing water in the outer tank 20 is drained, and a sudden arc rotation is performed, but the washing water is further drained, or after all the water is drained, the water level 72 is washed by the supply to the tank (refer to FIG. 8). Part, or all of the clean water or antibacterial water, will further improve the effect of tank cleaning. Further, when the water is re-accumulated in the outer tank 20, by making it lower than the original water level, the water resistance can be reduced and the tank can be washed.

Further, in the present embodiment, in the tank washing course, a part of the washing water in the outer tank 20 is drained and a sudden arc rotation is performed, but the continuous rotation is performed after the rapid arc rotation, and the outer rotation is performed. The water accumulated in the lower portion of the groove 20 is continuously lifted by the unevenness of the dehydration hole or the like existing on the outer side of the inner groove 10, and is brought up to the bottom surface and the side surface of the outer groove 20 to be carried along. By washing the entire circumference of the outer tank 20, the dirt on the inner surface of the outer tank cover 22 and the front surface of the inner tank 10 can be removed, and the detergency of the outer tank 20 can be improved.

Here, under the condition that the number of rotations of the inner tank 10 is 240 rpm or more, if the amount of washing water is about 7 liters (the tank washing water level of the bottom surface height of the inner tank 10 is about 25%), the outer tank 20 and the outer tank cover can be provided. The entire inner surface of the piece 22 flows into the washing water.

Here, the number of rotations of the inner tank 10 is set to 240 rpm, and the amount of the tank washing water is set to 7 liters, but the invention is not limited thereto. That is, as long as the number of washing revolutions of the tank is further increased, even if the washing water level of the tank is low, it is sufficient; if the number of washing revolutions of the tank is further reduced, the washing water level of the tank needs to be increased.

In the rotation direction of the continuous rotation, in order to prevent the outlet 20d provided in the lower portion of the back surface of the outer tub 20 from flowing into the washing water for the overflow pipe 15, it is desirable to rotate in the right (73) direction.

Further, in the present embodiment, in the tank washing course, a part of the washing water in the outer tank 20 is drained and a sudden arc rotation is performed, but the rotation center position 76 at which the circular arc is rotated is as shown in FIG. As shown in the entire circumference, the inner groove 10 is rotated in a stationary state in a stationary state, or is rapidly braked from the inner groove 10 in an arc-rotating state, and the entire circumference of the inner groove 10 is washed and removed. The cleaning power of the inner tank 10 is further improved.

For example, the inner groove 10 is repeatedly rotated in a predetermined arc angle to the left and right, and after the groove is washed, the inner groove is reversed by 180 degrees, and the left and right rapid arc rotation is performed again, so that the entire groove can be washed and attached. The outer peripheral wall of the inner tank 10 and the dirt in front of the balance ring body 10b. Further, without inverting, the left and right sharp arcs may be rotated after deviating from the predetermined angle, or the rapid arc rotation may be performed in one direction, for example, deviating from the circle by about 120 degrees (0 degrees → 120 degrees → 240 degrees). The center of the arc is rotated to clean the groove. In other words, in the position where the rapid arc rotation or the sudden braking is moved during the tank washing stroke, the groove can be washed while changing the range of the outer peripheral wall of the inner tank 10 which has a high cleaning power.

Further, when the left and right rapid arc rotation is repeated, the angle of the circular arc rotation is changed by the left rotation and the right rotation, and the outer circumferential wall of the inner tank 10 and the front surface of the balance ring body 10b can be completely washed. For example, the rotation angle when rotating right is set to 180 degrees, and the rotation angle when rotating left. When it is set to 150 degrees, the left and right round trips will shift the position of the rapid acceleration and the sudden braking by 30 degrees. Therefore, the left and right rapid arcs can be rotated 12 times to completely clean the outer peripheral wall of the inner tank 10 and the balance ring. Front of body 10b.

Returning to the description of Fig. 12, in step S311, the control device 60 causes the drain valve to be in the open state, and then proceeds to the dehydration step shown in Fig. 13 .

As shown in FIG. 13, in step S401, the control device 60 opens the drain valve V. Thereby, the used washing water in the outer tank 20 used in the tank washing course is discharged to the outside of the machine via the drain pipe 8.

By performing the tank cleaning stroke in this manner, it is possible to remove the entire dirt and waste in the washing tank (the inner tank 10 and the outer tank 20), and to suppress the adhesion of dirt and waste during the next operation.

The dehydration step is entered, and in step S401, the control device 60 determines whether the drain is over. Whether the drainage is completed or not can be judged based on the detected value of the water level detector 63. In step S401, if it is determined that the drainage has not been completed (No), the control device 60 repeats the step S401; if it is determined that the drainage has ended (Yes), the process proceeds to the step S402, and the process proceeds to the step S402. Drying trip.

In the drying stroke (S500), the control device 60 opens the cooling water supply solenoid valve 12d, energizes the heater 42, and drives the fan 41. Thereby, a water-cooling dehumidifying member (not shown) is used to remove moisture (dehumidification) of the vapor generated from the laundry, and by the heater After being heated 42, the dry air is returned to the inner tank 10 again.

Further, even after the end of the drying stroke, the tank can be washed to remove the dust adhering to the drying operation. Further, a process of confirming whether or not the laundry is left in the inner tub 10 is performed.

For example, when the user opens the door body 2 to take out the clothes, closes the door body 2, and presses a predetermined button (for example, a start button), the groove washing stroke can be started. Further, since the laundry is not placed, the inner tank 10 can be rotated at a high speed, and the rotation can be performed with a small amount of water to further improve the water-saving performance.

As described above, the washing and drying machine S1 drains a part of the washing water in the outer tank 20 during the tank washing course, and repeats the inner tank 10 to perform the left and right rapid arc rotation and the sudden braking or continuous. Rotate. By lowering the water level, the contact area between the inner tank 10 and the water is reduced, whereby the resistance to water is reduced, and the rotational speed of the inner tank 10 can be increased without increasing the load of the motor M. By increasing the rotational speed of the inner tank 10, the relative speed of the inner tank 10 and water becomes larger and the washing power of the inner tank 10 is increased. Further, by raising the rotational speed of the inner tank 10, the water between the inner tank 10 and the outer tank 20 will flow by the unevenness of the dewatering holes or the like existing outside the inner tank 10 and the water, and the outer tank 20 will flow. The relative speed with water becomes large, and at the same time, water flows in the entire circumference of the outer tank 20, and dirt and waste adhering to the inner surface of the outer tank cover 22 and the front surface of the inner tank 10 can be removed, and dirt and waste are accumulated. It is discharged before, and the washing tank (the inner tank 10 and the outer tank 20) can be kept clean. In this way The dirt and the adhesion of waste can inhibit the growth of bacteria and the generation of odor.

Further, the tank washing stroke (S300) in the present embodiment is performed only when the washing program or the washing and drying program is started in a state where the predetermined tank washing button is set to be on; in the case of being set to be closed In the case where the washing process or the washing and drying process is started in the state, the tank washing stroke is omitted and the normal washing operation or the washing and drying operation is performed. Therefore, if the tank cleaning is set to ON, the rapid arc rotation can be automatically performed in the middle of the washing program or the washing and drying program without performing a special tank washing program other than the washing program or the washing and drying program. It is difficult to leave the dirt on the wall surface of the groove.

In the present embodiment, an example of execution of the drum type laundry dryer has been described, but a drum type washing machine not equipped with a drying function can also be applied to the present invention.

1‧‧‧ frame

10‧‧‧ Inside slot

10b‧‧‧balanced ring

20‧‧‧ outer trough

40‧‧‧Send fan unit

71‧‧‧Water level at 11.5 litres

72‧‧‧ trough washing water level

73‧‧‧Right rotation

74‧‧‧Rotation angle

75‧‧‧ Left rotation

76‧‧‧Center of rotation

Claims (6)

A drum type washing machine comprising: an outer tub supported in a casing and accumulating water therein, a drum enclosed in the outer tub and containing laundry, a driving device for rotationally driving the drum, and controlling the driving device a control unit and a water supply means for supplying water in the outer tank, and having a washing stroke and a washing stroke. The drum type washing machine is characterized in that the washing course has a product in the outer tank by the water supply means In the state where the water is left, the stroke of continuously rotating the drum is discharged after the part of the drum is partially immersed in the outer tank after the part of the washing water used for the washing stroke is discharged. In the state of the water, the circular arc is rotated such that the drum rotates less than one week, and the arc rotation is accelerated by a faster acceleration than when the continuous rotation is started, or is A short arc rotation that stops when the continuous rotation stops. The drum type washing machine according to claim 1, wherein the control unit performs a right and left rapid arc rotation when the drum is rotated in an arc, and the right and left rapid arc rotation is more than when the continuous rotation is stopped. A short braking time is used to stop it, and immediately after the stop, the arc is rotated in the opposite direction at an acceleration faster than when the aforementioned continuous rotation starts. The drum type washing machine of claim 2, wherein the control unit repeatedly executes the left and right in a predetermined angular range After the rapid arc is rotated, the left and right rapid arc rotations are repeatedly performed after the drum is rotated by a predetermined angle. The drum type washing machine according to claim 2, wherein the control unit repeatedly performs the right and left acute arc rotation, and changes the angle of the circular arc rotation by the left rotation and the right rotation. The drum type washing machine according to any one of claims 1 to 4, wherein the washing course has a plurality of washings, and the washing is performed by discharging the water in the outer tank by the water supply means The water is accumulated; and after the second and subsequent washings, a part of the water in the outer tank is discharged, the control unit performs the sudden arc rotation. A drum type washing machine comprising: an outer tub supported in a casing and accumulating water therein, a drum enclosed in the outer tub and containing laundry, a driving device for rotationally driving the drum, and controlling the driving device a control unit and a water supply means for supplying water in the outer tank, and having a washing stroke and a washing stroke. The drum type washing machine is characterized in that the washing course has a product in the outer tank by the water supply means In the state in which the water is left, the stroke for continuously rotating the drum is discharged to at least a part of the washing water used in the washing course, and then the water is supplied to the outer tank to be lower than the original water level. After the water in the outer tank is replaced by the method, the control unit performs a circular arc rotation in which the drum is immersed in water and the drum is rotated less than one week. Is faster than when the aforementioned continuous rotation starts. Acceleration accelerates, or is a sharp arc rotation that is stopped at a shorter control time than when the continuous rotation is stopped.