JP6286311B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a drum type washing machine.

  Conventional drum-type washing machines include those disclosed in Japanese Patent No. 4460557 (Patent Document 1). In this drum type washing machine, in the rinsing step, washing water and dirt remaining on the clothes are removed by centrifugal force generated by drum rotation by shower rinsing in which water is supplied while the drum is rotated.

  At that time, after performing high-speed dewatering at a drum rotation speed of 900 rpm, water supply is performed while the drum rotation speed is reduced, and drainage is stopped after a lapse of T1 time. Thus, when the set water level is reached, water supply is stopped, and when the rotational speed of the drum reaches 300 rpm, 300 rpm is maintained, and the circulating pump is driven to circulate the water in the drum and eject it from the nozzle, so that the rotational speed of the drum is 300 rpm. I'm trying to do a shower rinse.

Japanese Patent No. 4460557

  However, the conventional drum type washing machine disclosed in Patent Document 1 has the following problems.

  That is, when performing the shower rinsing, in order to improve the rinsing action by a physical force such as a centrifugal force, it is effective to perform shower water discharge from the nozzle when the drum rotates at a high speed of 900 rpm. is there. However, in the conventional drum-type washing machine, the nozzle that discharges water in the case of the shower rinsing simply has a base having a plurality of small-diameter holes, and the shower is discharged from the nozzle. Consists of large grain water.

  Therefore, when the drum collides with the clothing, the water having a large particle size is repelled by the clothing and hardly penetrates into the clothing. Therefore, when performing the shower rinsing, it is necessary to reduce the rotational speed of the drum to 300 rpm so that even water having a large particle diameter can penetrate into the clothes.

  As a result, the conventional drum-type washing machine has a problem that a waiting time is required from the start of the decrease in the drum rotation speed until the drum rotation speed reaches 300 rpm during the shower rinsing.

  Further, resonance occurs in the drum mainly due to the fact that the rotational frequency of the rotary shaft and the natural frequency of bending of the rotary shaft coincide. The main body of the washing machine has a resonance rotational speed at which resonance occurs with the resonance of the drum. Since the resonance speed of the main body is 400 rpm to 600 rpm, it is necessary to pass the resonance speed in order to reduce the drum rotation speed to 300 rpm. There is also a problem that a large vibration occurs every time.

  Further, in the washing process, it is effective to increase the rotational force of the drum to increase the centrifugal force in the case of push-washing in which dirt floating from the clothes by tapping is pushed out by centrifugal force. However, high-speed rotation of the drum when the washing water is accumulated in the drum or the laundry is not uniform causes large vibrations. Therefore, in the above-mentioned Patent Document 1, the above-described washing is performed while suppressing the number of rotations of the drum. However, there is a problem that the centrifugal force is weak on the center side of the drum and effective washing cannot be expected.

  Accordingly, a first object of the present invention is to enable high-speed rotation of the drum during the shower rinsing, eliminate the waiting time for lowering the drum rotation speed, and effectively perform rinsing with physical force such as centrifugal force. Another object of the present invention is to provide a drum-type washing machine that can eliminate generation of unpleasant vibration due to resonance of the main body.

  A second object of the present invention is to provide a drum-type washing machine capable of effectively performing the above-described washing without increasing the rotational speed of the drum more than necessary.

  A third object of the present invention is to provide a drum-type washing machine capable of enhancing the drainage efficiency of rinse water in the case of shower rinsing by high-speed rotation of the drum.

In order to solve the first problem, the drum-type washing machine of the present invention includes:
An outer box,
A water tank disposed in the outer box;
A drum that is rotatably arranged in the aquarium and contains laundry;
A shower nozzle that diffuses and sprays water in the form of a shower while swirling water into the drum;
A drive unit for rotationally driving the drum;
A speed control unit that variably controls the rotation speed of the drum;
A shower water supply unit for supplying water to the shower nozzle;
A controller that controls the drive unit, the speed control unit, and the shower water supply unit to perform a washing process, a rinsing process, and a dehydrating process;
The rinse step is
An intermediate dehydration process for dehydrating the laundry;
After the intermediate dehydration process, the sprayed water sprayed from the shower nozzle is applied to the laundry, and the laundry has a shower rinsing process,
In the shower rinsing process, the control device controls the shower water supply unit to supply water to the shower nozzle, and the rotational speed of the drum with respect to the speed control unit is determined from a resonance rotational speed at which the outer box resonates. And a shower rinsing control unit for instructing control to be performed at a high rinsing speed.

In the drum type washing machine of the present invention,
An outer box,
A water tank disposed in the outer box;
A drum that is rotatably arranged in the aquarium and contains laundry;
A shower nozzle that diffuses and sprays water in the form of a shower while swirling water into the drum;
A drive unit for rotationally driving the drum;
A speed control unit that variably controls the rotation speed of the drum;
A shower water supply unit for supplying water to the shower nozzle;
A control device that controls the drive unit, the speed control unit, and the shower water supply unit to perform a washing process, a rinsing process, and a dehydrating process;
A cloth amount detection unit that detects the amount of cloth that is the amount of laundry,
The rinse step is
An intermediate dehydration process for dehydrating the laundry;
After the intermediate dehydration process, the sprayed water sprayed from the shower nozzle is applied to the laundry, and the laundry has a shower rinsing process,
In the intermediate dehydration process, the outer casing resonates the maximum rotation speed of the drum with respect to the speed control unit when the fabric amount detected by the fabric amount detection unit is equal to or less than a reference value in the intermediate dehydration process. A rinsing process control unit for instructing the control to be performed at a rinsing rotational speed higher than the resonance rotational speed.

In the drum type washing machine of one embodiment,
A cloth amount detection unit that detects the amount of cloth that is the amount of laundry is provided,
In the intermediate dehydration process, when the cloth amount detected by the cloth amount detector is equal to or less than a reference value, the control device sets the maximum rotation speed of the drum to the rinse rotation speed with respect to the speed controller. A rinsing process control unit for instructing control is included.

In the drum type washing machine of one embodiment,
A drainage part for draining the water in the aquarium,
The shower rinse control unit is also adapted to control the drainage unit,
The rinsing step is a final process, and includes a rinsing process for rinsing the laundry by storing water and tumbling the drum.
The shower rinsing control unit controls the shower water supply unit to supply water to the shower nozzle at the time of deceleration after completion of the intermediate dehydration in the intermediate dehydration process immediately before the transition to the rinsing process. Is controlled to stop the drainage of the water tank.

In the drum type washing machine of one embodiment,
The shower nozzle
The edge of the opening in the drum, and in the shower rinsing process, is located on the side rotating in the direction opposite to the direction of gravity in the drum and further above the rotation axis of the drum In the vicinity of the edge, the injection port is located,
In the shower rinsing process, shower water is diffused and jetted obliquely downward on the side rotating in the direction of gravity in the drum and further below the rotating shaft of the drum. ing.

In order to solve the second problem, the drum-type washing machine of the present invention is
An outer box,
A water tank disposed in the outer box;
A drum that is rotatably arranged in the aquarium and contains laundry;
A shower nozzle that diffuses and sprays water in the form of a shower while swirling water into the drum;
A drive unit for rotationally driving the drum;
A speed control unit that variably controls the rotation speed of the drum;
A shower water supply unit for supplying water to the shower nozzle;
A controller that controls the drive unit, the speed control unit, and the shower water supply unit to perform a washing process, a rinsing process, and a dehydrating process;
The washing process
Tapping and washing process to lift dirt from the laundry,
A push-washing process that extrudes dirt floating from the laundry by centrifugal force with centrifugal force,
The control device controls the shower water supply unit to supply water to the shower nozzle in the push-washing process, and sets the rotational speed of the drum to the inner peripheral surface of the drum with respect to the speed control unit. It is characterized by including a washing process control unit for instructing to control the number of rotations to be stickable.

In order to solve the third problem, the drum type washing machine of the present invention is
An outer box,
A water tank disposed in the outer box;
A drum that is rotatably arranged in the aquarium and contains laundry;
A shower nozzle that diffuses and sprays water in the form of a shower while swirling water into the drum;
A drive unit for rotationally driving the drum;
A speed control unit that variably controls the rotation speed of the drum;
A shower water supply unit for supplying water to the shower nozzle;
A controller that controls the drive unit, the speed control unit, and the shower water supply unit, applies the water sprayed and sprayed from the shower nozzle to the laundry, and rinses and rinses the laundry;
The shower nozzle
The edge of the opening in the drum, the side rotating in the direction opposite to the direction of gravity in the drum during the shower rinsing, and further above the rotation axis of the drum In the vicinity of the edge, the injection port is located,
At the time of the shower rinsing, shower water is diffused and jetted obliquely downward on the side rotating in the direction of gravity in the drum and below the rotation axis of the drum. It is characterized by having.

  As is apparent from the above, the drum type washing machine of the present invention is configured to spray water in a shower shape while swirling water having a small particle diameter from the shower nozzle into the drum. Therefore, the shower water is easy to penetrate into clothes. Therefore, in the shower rinsing process, the shower water from the shower nozzle is used, so that the shower water can be set even if the rotational speed of the drum is set to a rinse rotational speed higher than the resonant rotational speed at which the outer casing resonates. The shower rinsing can be effectively performed by causing the laundry to permeate the laundry and causing a physical force such as a centrifugal force to act on the laundry by high-speed rotation of the drum.

  Further, the decrease in the rotational speed of the drum after the intermediate dehydration in the shower rinsing process is up to a rinsing rotational speed higher than the resonant rotational speed at which the outer box resonates. Therefore, when the rotational speed of the drum is lowered, it is possible to eliminate the occurrence of unpleasant vibration due to the resonance of the washing machine.

  That is, according to the present invention, the drum can be rotated at a high speed during the shower rinsing, the waiting time for decreasing the drum rotation speed is unnecessary, and the rinsing is effectively performed by physical force such as centrifugal force. The generation of unpleasant vibration due to the resonance of the.

  In the drum type washing machine of the present invention, water having a small particle diameter is swirled and sprayed in a shower shape while swirling water from the shower nozzle into the drum. Therefore, the shower water is easy to penetrate into clothes. Therefore, in the washing process of the washing step, by using shower water from the shower nozzle, the shower water having a small particle diameter can be easily obtained without increasing the rotational speed of the drum and increasing the centrifugal force. The dirt floating from the laundry can be effectively pushed out by permeating into the laundry and tapping.

  That is, according to this invention, in the washing process during the washing process, the washing can be performed effectively without increasing the rotational speed of the drum more than necessary.

  Further, the drum type washing machine of the present invention is a side rotating from the shower nozzle in the direction of gravity in the drum at the time of the shower rinsing and further below the rotating shaft of the drum. On the other hand, shower water is diffused and sprayed obliquely downward.

  Therefore, the shower water diffused and sprayed from the shower nozzle can quickly move toward the drain of the water tank. That is, the drainage efficiency of the rinse water in the case of shower rinsing by high-speed rotation of the drum can be increased.

It is a schematic perspective view in the drum type washing machine of this invention. FIG. 2 is a cross-sectional view taken along arrow A-A ′ in FIG. 1. FIG. 3 is an exploded view of the shower nozzle in FIG. 2. It is sectional drawing of the said shower nozzle. It is a control block diagram. It is a sequence diagram of a rinse process. FIG. 7 is a sequence diagram of a rinsing process different from FIG. 6. It is a sequence diagram of a washing process. It is the schematic which looked at the drum and the water tank from the opening part side. It is a sequence diagram regarding the last dehydration process.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

-1st Embodiment FIG. 1: is the schematic perspective view seen from diagonally upward in the drum type washing machine of this Embodiment.

  As shown in FIG. 1, the drum type washing machine includes an outer box 1 having an outer box opening 2 on the front surface.

  The outer box opening 2 is opened and closed by a door 3 rotatably attached to the outer box 1 by a hinge. A part of the door 3 is made of a transparent member such as glass so that the inside of the drum 4 (see FIG. 2) can be seen.

  An operation display unit 5 is provided on the front upper portion of the outer box 1. The operation display unit 5 includes a plurality of operation keys for determining the operation content, a display unit for displaying the operation content determined by the operation key, and the like. By this input to the operation display unit 5, the drum type washing machine performs a washing operation, a rinsing operation, a dehydrating operation, and the like.

  2 is a cross-sectional view taken along the line A-A 'in FIG. As shown in FIG. 2, the drum type washing machine includes a water tank 6 disposed in the outer box 1, a drum 4 that is rotatably disposed in the water tank 6 and accommodates laundry 7 such as clothes, A storage case 8 provided in the box 1 for storing the laundry treatment agent, a storage case water supply path 9, a water tank water supply path 10, and a shower water supply path 11 is provided. Here, the laundry treatment agent is for washing the laundry 7, and specifically, is a detergent, a softening agent, a bleaching agent, or the like.

  The storage case water supply path 9 is a water path for supplying water to the storage case 8 from a water supply part 12 provided at the rear portion of the top surface portion of the outer box 1, and a first water supply valve 13 that opens and closes the water path. Is installed. The water tank water supply path 10 is a water path for supplying the washing treatment agent solution from the housing case 8 into the water tank 6. The shower water supply path 11 is a water path for supplying shower water from the water supply unit 12 into the drum 4, and a second water supply valve 14 for opening and closing the water path is interposed. The second water supply valve 14 is an example of the shower water supply unit.

  A water tank opening 15 that opens to face the outer box opening 2 is provided on the front surface of the water tank 6. The water tank 6 has a bottomed cylindrical shape, and is disposed sideways so that the water tank opening 15 faces the outer box opening 2. In that case, the axis passing through the center of gravity of the water tank 6 is inclined so as to have an angle of 5 ° to 30 ° with respect to the horizontal direction. The water tank 6 is elastically supported by a suspension 16 provided below the rear part (bottom part) of the water tank 6. Further, a main motor 17 as an example of the drive unit is attached to the rear surface (bottom outer surface) of the water tank 6, and the drum 4 is rotated by the main motor 17.

  The drum 4 has a bottomed cylindrical shape, and is inclined so that a bottom portion (that is, a rear portion) is lower than a front portion. That is, the rotation axis of the drum 4 is parallel to the axis passing through the center of gravity of the water tank 6. Therefore, the rotating shaft of the drum 4 is inclined so as to have an angle of 5 ° to 30 ° with respect to the horizontal direction. In addition, a drum opening 18 that opens to face the water tank opening 15 is provided on the front surface of the drum 4. In addition, a plurality of through holes 19 (only six are illustrated in FIG. 2) are provided in the entire peripheral wall of the drum 4.

  The through hole 19 is a hole for allowing the laundry treatment solution, water, and air to flow between the space between the water tank 6 and the drum 4 and the space in the drum 4. For example, the laundry treatment agent solution supplied into the water tub 6 enters the drum 4 through the through hole 19.

  A packing 20 made of an elastic body such as rubber or soft resin is fixed to the water tank opening 15. Therefore, when the door 3 is closed, the door 3 comes into close contact with the packing 20, so that the liquid in the water tank 6 can be prevented from leaking out of the water tank 6.

  The packing 20 connects the edge of the outer box opening 2 in the outer box 1 and the edge of the water tank opening 15 in the water tank 6 so that the laundry 7 can pass through the space inside the packing 20. Yes. That is, the packing 20 forms an access path for taking in and out the laundry 7. Further, the packing 20 is provided with a bellows or the like, and can bend according to the swinging of the water tank 6 to follow the movement of the water tank 6.

  The storage case 8 is disposed so as to be located inside the front portion of the top surface portion of the outer box 1 and above the front portion of the water tank 6. And the storage case 8 has the main-body part 21 which has the opening part which opposes the top | upper surface of the outer case 1, and the cover part 22 which comprises a part of the outer case 1 and covers the said opening part of the main-body part 21 so that opening and closing is possible. And is composed of.

  The storage case water supply path 9 includes a first path 23 and a second path 24. A first water supply valve 13 that opens and closes the first path 23 and the second path 24 is interposed at a branch position of the second path 24 from the first path 23. The first water supply valve 13 can open only one of the first path 23 and the second path 24. Further, the first water supply valve 13 can open and close both the first path 23 and the second path 24 simultaneously.

  A water supply port 12 a provided at the bottom of the water supply unit 12 is connected to one end of the storage case water supply path 9 on the first water supply valve 13 side. Specifically, tap water from a tap (not shown) is supplied to the water supply unit 12. On the other hand, the other end of the storage case water supply path 9, that is, the end of the first path 23 is in the detergent storage chamber (not shown) in the main body 21 of the storage case 8, and the end of the second path 24 is stored. The case 8 communicates with a softener storage chamber (not shown) in the main body 21.

  One end of the water tank water supply path 10 communicates with the main body 21 of the housing case 8, and the other end communicates with the upper part of the water tank 6.

  One end of the shower water supply path 11 communicates with the water supply port 12a of the water supply unit 12 via the second water supply valve 14, and a shower nozzle 25 is provided at the other end. The shower nozzle 25 is attached to the upper edge of the water tank opening 15 so that the tip of the shower nozzle 25 faces the drum opening 18, and jets water in a shower-like manner obliquely downward. For example, in the rinsing process, the water sprayed in the shower shape enters the drum 4 from the drum opening 18 and falls on the laundry 7.

  A drain outlet 26 for draining the washing liquid or the like in the water tank 6 to the outside is provided at the lower part of the water tank 6, and an upper end portion of a drain duct 27 is connected to the drain outlet 26. Washing water in the drainage duct 27 passes through the filter case 28 and is then discharged out of the outer box 1 through the drainage hose 29.

  A drain valve 30 that is opened and closed by a drain motor 31 is interposed at the end of the drain hose 29 on the filter case 28 side. The drain motor 31 is controlled by a control device as will be described in detail later. That is, the opening / closing of the drain valve 30 is controlled by the control device. When the drain valve 30 is opened, the washing water in the water tub 6 passes through the filter case 28 through the drain duct 27 and then drains out of the outer box 1 through the drain hose 29. Is done. Here, the drain valve 30 and the drain motor 31 are examples of the drain section.

  A resin or metal lint filter 32 is accommodated in the filter case 28. In this way, foreign matters such as lint are removed from the washing water passing through the filter case 28.

  The filter case 28 is integrally provided with an air trap 33. Further, the space in the filter case 28 communicates with the space in the air trap 33, and a part of the water that has entered the filter case 28 enters the air trap 33. One end of a pressure guide pipe 34 is connected to the air trap 33, and a water level sensor 42 (see FIG. 5) is connected to the other end of the pressure guide pipe 34. The water level sensor 42 detects the water level in the water tank 6.

  The water level sensor 42 has a coil and a magnetic body therein, and the magnetic body moves in the coil in accordance with a change in air pressure in the air trap 33. Thus, the water level sensor 42 detects the water level in the water tank 6 based on the oscillation frequency by detecting the coil inductance generated by the position of the magnetic body in the coil as the oscillation frequency. Here, the position of the water level sensor 42 is higher than the position of the drain 26 in the water tank 6.

  The water level detection method in the water level sensor 42 is not limited to the above-described method using the air trap 33 and the pressure guiding pipe 34.

  The drum type washing machine also performs a dehydrating operation, a drying operation, and the like, but since it is not related to the gist of the present invention, description of the configuration and operation thereof will be omitted.

  Hereinafter, shower rinsing, which is a feature of the present embodiment, will be described.

  FIG. 3 is an exploded view of the shower nozzle 25. FIG. 4 is a sectional view of the shower nozzle 25. As shown in FIGS. 3 and 4, the shower nozzle 25 is mounted in the nozzle body 36, a nozzle joint 36 for connecting to the shower water supply path 11, a nozzle body 37 connected to the nozzle joint 36, and the nozzle body 37. This is generally composed of a waller (swivel) 38 and a cap 39.

  The nozzle joint 36 has a connection fitting 36 a for attaching and fixing to the upper edge of the water tank opening 15 in the water tank 6. Furthermore, the throttle part 36b (refer FIG. 4) for raising the flow velocity of a water flow is provided inside. Further, the nozzle body 37 has a connection fitting 37 a connected to the connection fitting 36 a of the nozzle joint 36, and has a function of rectifying the water flow from the nozzle joint 36. Furthermore, the tip end portion 37b of the nozzle body 37 faces the drum opening 18 side, and a warler 38 is mounted inside.

The waller (swirler) 38 has a V-shaped swirl groove 38b along an obliquely arranged elliptical plate 38a to swirl the supplied water flow to create a swirl flow, and when turbulent flow occurs. The water is cut by shearing force or the like to create granular water. The cap 39 is connected to the tip end portion 37b of the nozzle body 37, narrows the flow path by an injection port 39a having a small opening area (7.1 mm ² ), and the granulated water produced by the whirler 38 Is further cut by a shearing force or the like to produce small-diameter water having a particle diameter of 2 mm or less.

  Thus, the shower nozzle 25 swirls a shower made of granular water having a smaller particle diameter than the shower discharged from the nozzle “having a base having a plurality of small-diameter holes” as in the above-mentioned Patent Document 1. It becomes possible to carry out diffusion jetting.

  Therefore, in the present embodiment, an effective shower rinsing is performed using a shower made of such granular water having a small particle diameter.

  FIG. 5 is a control block diagram relating to a washing operation, a dehydrating operation and a rinsing operation in the drum type washing machine. The drum type washing machine includes a control device 41 including a microcomputer and an input / output circuit in an electrical component section (not shown). An operation display unit 5, a water level sensor 42, a rotation speed sensor 43, a voltage sensor 44 and a vibration sensor 45 are connected to the control device 41. Thus, the control device 41 can acquire detection signals from the operation display unit 5, the water level sensor 42, the rotation speed sensor 43, the voltage sensor 44, and the vibration sensor 45.

  The voltage sensor 44 detects the voltage of the main motor 17 for driving the drum. The vibration sensor 45 detects the vibration of the drum 4. The rotation speed sensor 43 detects the rotation speed of the drum 4.

  Furthermore, the first water supply valve 13, the second water supply valve 14, the drainage motor 31, and the inverter 47 are connected to the control device 41 via a load drive circuit 46. The main motor 17 is connected to the inverter 47. The inverter 47 is an example of the speed control unit.

  The control device 41 performs calculation and determination based on detection signals from the operation display unit 5, the water level sensor 42, the rotation speed sensor 43, the voltage sensor 44, and the vibration sensor 45, so that the operation display unit 5 and the load drive are performed. The circuit 46 is controlled. Further, the load drive circuit 46 drives the first water supply valve 13, the second water supply valve 14, the drainage motor 31 and the inverter 47. The rotation speed of the main motor 17 for driving the drum is controlled by the inverter 47. Thus, the washing operation, the dehydrating operation, and the rinsing operation are executed under the control of the control device 41.

  In this drum type washing machine, a drying operation is also performed, but since it is not related to the gist of the present invention, the configuration around the control device 41 is omitted.

  According to the drum type washing machine having the above-described configuration, the shower nozzle 25 can perform diffusive spray while swirling a shower made of granular water having a smaller particle diameter than the conventional one. Accordingly, the shower water sprayed from the shower nozzle 25 easily penetrates into the clothing and is diffused over a wide range. Therefore, in the present embodiment, the shower rinsing is performed by rotating the drum at a high speed using the shower from the shower nozzle 25.

  Here, the microcomputer of the control device 41 functions as a rinsing process control section 48 including a shower rinsing control section 49, a cloth amount detection section 50, a cloth quality detection section 51, a washing process control section 52, and a timer 53. be able to.

  Hereinafter, the shower rinsing operation executed by the shower rinsing control unit 49 in the control device 41 will be described.

  FIG. 6 shows a sequence diagram of the rinsing process executed by the rinsing process control unit 48 and the shower rinsing control unit 49. However, FIG. 6 illustrates a case where the shower rinsing is performed only once. In FIG. 6, the rotation speed of the drum 4 (that is, the rotation speed of the main motor 17) detected by the rotation speed sensor 43 from above, the on / off of the second water supply valve 14 for supplying water to the shower nozzle 25, and the drain motor 31. The on / off state of the drain valve 30 that is opened and closed by is shown.

  As shown in FIG. 6, when the rinsing operation is started by the rinsing process control unit 48, the second water supply valve 14 is turned off (closed), and the drain valve 30 is turned on (opened). At time t0, the main motor 17 is rotated to start the rotation of the drum 4, and the rotation speed of the drum 4 is increased to 1000 rpm by the inverter 47.

  Thus, when high-speed dehydration at 1000 rpm is performed for the time T1, the shower rinsing control unit 49 shifts to shower rinsing. Then, first, at time t1, the inverter 47 sets the rotational speed of the drum 4 to be higher than the resonance rotational speed (400 rpm to 600 rpm) and can sufficiently squeeze the moisture in the laundry 7. Then, a deceleration process for decelerating to 780 rpm is started. When the rotational speed of the drum 4 reaches 780 rpm at t2, the second water supply valve 14 is turned on (opened) and water is supplied to the shower nozzle 25. In that case, the drain valve 30 is kept on.

  Thus, when the shower rinsing at 780 rpm is performed for the time T2, the second water supply valve 14 is turned off (closed) at the time t3, and the water supply to the shower nozzle 25 is stopped. Then, the rotation speed of the drum 4 is increased to 1000 rpm by the inverter 47. In that case, the drain valve 30 is kept on. Thus, when high speed dewatering at 1000 rpm is performed for time T3, the rotation speed of the drum 4 is reduced to 0 rpm by the inverter 47 at time t4.

  When the shower rinsing is performed a plurality of times, the high-speed shower rinsing at 780 rpm is executed a predetermined number of times by returning from the time t4 to the time t1 and repeating from the time t1 to the time t4. After that, the rotation speed of the drum 4 is reduced to 0 rpm by the inverter 47.

  Thus, when the rotational speed of the drum 4 reaches 0 rpm and the dehydration is completed, the rinsing process control unit 48 shifts to the rinsing operation. Then, after the water is supplied, a “reverse rinse process” or the like is performed in which the drum 4 is sequentially rotated forward, stopped, and reverse.

  As described above, in the shower rinsing according to the present embodiment, the shower diffused and sprayed from the shower nozzle 25 is made of granular water having a small particle size, and easily penetrates into clothing. Therefore, even if the rotation speed of the drum 4 is a high speed rotation of 780 rpm, the granular water can permeate into the clothes bag, and the rinsing performance can be improved. Furthermore, since the drum 4 is rotated at a high speed of 780 rpm, which is higher than 300 rpm in Patent Document 1, physical force such as centrifugal force can be applied to the laundry 7 such as clothes. In addition, the drain valve 30 is opened throughout the entire rinsing process including the shower rinsing period (time T2), and new clean water is supplied to the shower nozzle 25.

  From the above, it is possible to efficiently remove more detergent residue and dirt as compared with the case of Patent Document 1 in which shower rinsing is performed with circulating water mixed with detergent water.

  Further, since the shower water from the shower nozzle 25 has a small particle size and is light, it can be diffused while swirling over a wide range. Therefore, the shower can be evenly sprinkled on the laundry stuck to the inner peripheral wall (body portion) of the drum 4, and the rinsing performance can be further improved.

  In the shower rinsing according to the present embodiment, the drum 4 is rotated at a high speed of 780 rpm. Therefore, unlike the conventional drum type washing machine, it is not necessary to reduce the drum rotation speed to 300 rpm, the waiting time until the desired rotation speed is reached, and the rinsing time can be shortened.

  Furthermore, the decrease in the rotational speed of the drum 4 during the shower rinsing is up to 780 rpm. Therefore, when the rotational speed of the drum 4 is reduced, the resonance speed of 400 rpm to 600 rpm at which resonance occurs in the washing machine does not pass, and unpleasant vibration can be prevented from being generated each time the shower is rinsed. .

  Further, in the shower rinsing according to the present embodiment, the water supplied to the drum 4 is only the shower diffused and sprayed from the shower nozzle 25. Therefore, the load on the main motor 17 can be reduced and the water splashing sound can be reduced as compared with the case of Patent Document 1 in which the shower rinsing is performed with the circulating water using the water accumulated up to the set water level.

-2nd Embodiment This Embodiment is related with the rinse operation | movement according to the cloth quality and capacity | capacitance of the laundry. The basic structure and control block of the drum type washing machine in the present embodiment are the same as the structure shown in FIGS. 1 and 2 and the control block shown in FIG. 5 in the first embodiment. Therefore, in the present embodiment, description will be made using the structure of the drum type washing machine shown in FIGS. 1 and 2 and the control block shown in FIG.

  When the amount of the laundry 7 (hereinafter referred to as the amount of cloth) is small, or when the amount of synthetic fiber (hydrophobic fiber) is large, the number of rotations of the drum 4 in the rinsing step is higher than that in the case of the first embodiment. Even in a low state (that is, the centrifugal force is small), moisture is easily removed from the laundry 7. Therefore, in that case, it is possible to further shorten the rinsing time by omitting the high-speed dewatering performed at the beginning of the rinsing process.

  FIG. 7 shows a sequence diagram of the rinsing process executed by the rinsing process control unit 48 and the shower rinsing control unit 49 of the control device 41 in the present embodiment. However, FIG. 7 illustrates a case where the shower rinsing is performed only once. In FIG. 7, the rotational speed of the main motor 17, the on / off state of the second water supply valve 14, and the on / off state of the drain valve 30 are shown from the top.

  First, when the power key, the operation course selection key, the start key, and the like of the operation display unit 5 are sequentially operated, the cloth amount detection process is performed by the cloth amount detection unit 50 of the control device 41.

  Here, the cloth amount detection method by the cloth amount detector 50 is not limited to a specific method. For example, the drum 4 loaded with the laundry 7 is rotated by the main motor 17, and the amount of cloth is detected based on the fluctuation value of the motor torque in that case.

  Further, the cloth quality detection unit 51 of the control device 41 performs a cloth quality detection process.

  Here, the cloth quality detection method by the cloth quality detection unit 51 is not limited to a specific method. For example, the first water supply valve 13 is turned on to supply water up to a preset water level set in advance on the drum 4 in which the laundry 7 is put. Then, the main motor 17 is controlled to perform tumbling for a short time so that the laundry 7 contains water, and the water level of the water tub 6 reduced in accordance with the water is detected based on the detection signal from the water level sensor 42 to be the first. Get the water level change. The tumbling is again performed for a short time, and the water level of the water tank 6 further reduced in water is detected based on the detection signal from the water level sensor 42 to obtain the second water level change amount that is the water level change amount by the second tumbling. Then, from the first water level change amount and the second water level change amount, it is determined whether the cloth quality of the laundry 7 is a hydrophobic fiber or a hydrophilic fiber according to a preset criterion.

  When the amount of cloth detected by the cloth amount detector 50 is equal to or less than a preset reference value, or when the cloth detected by the cloth detector 51 is a hydrophobic fiber, the control device 41 is performed by the rinsing process control unit 48 and the shower rinsing control unit 49 according to the sequence diagram shown in FIG.

  As shown in FIG. 7, when the rinsing operation is started by the rinsing process control unit 48, the second water supply valve 14 is turned off (closed) and the drain valve 30 is turned on (opened). At time t0, the main motor 17 is rotated to start the rotation of the drum 4, and the rotation speed of the drum 4 is increased to 780 rpm by the inverter 47. Thus, when the rotational speed of the drum 4 reaches 780 rpm, the shower rinsing control unit 49 shifts to shower rinsing.

  Then, first, the second water supply valve 14 is turned on (opened) at time t11, and the shower nozzle 25 is supplied with water. In that case, the drain valve 30 is kept on. Thus, shower rinsing at 780 rpm is started.

  That is, in the present embodiment, when the amount of cloth is small or when the cloth quality is hydrophobic fiber, moisture easily escapes from the laundry 7. Therefore, the rotational speed of the drum 4 performed before shower rinsing is 780 rpm. The super-high speed dehydration is omitted, and the process proceeds to shower rinsing at 780 rpm. Therefore, the intermediate dehydration time before the shower rinsing can be shortened by the amount that the ultra-high speed dehydration is omitted, thereby shortening the time of the rinsing process.

  Thus, when shower rinsing at 780 rpm is performed for time T4, the second water supply valve 14 is turned off (closed) at time t12, and water supply to the shower nozzle 25 is stopped. Then, the rotation speed of the drum 4 is increased to 1000 rpm by the inverter 47. The drain valve 30 is kept on.

  In that case, in the case of the hydrophobic fiber, moisture is more easily removed from the laundry 7. Therefore, the shower rinsing time T4 at 780 rpm can be made shorter than the shower rinsing time T2 at 780 rpm in the first embodiment, and the time required for the rinsing process can be further shortened.

  Thereafter, when high-speed dewatering at 1000 rpm is performed during time T3, the rotation speed of the drum 4 is reduced to 0 rpm by the inverter 47 at time t13.

Note that by when a plurality of times to rinse the shower, return to time t11 at the point t 14 when the rotational speed at the time t13 drum 4 becomes decelerated by 780Rpm, repeated from time t11 to time t14, High speed shower rinsing at 780 rpm is performed a preset number of times. After that, the rotation speed of the drum 4 is reduced to 0 rpm by the inverter 47.

  Thus, when the rotational speed of the drum 4 reaches 0 rpm and the dehydration is completed, the rinsing process control unit 48 shifts to the rinsing operation. Then, after the water is supplied, a “reverse rinse process” or the like is performed in which the drum 4 is sequentially rotated forward, stopped, and reverse.

  In the rinsing step, high-speed dehydration (so-called intermediate dehydration) performed before shower rinsing is for reducing the amount of washing water contained in clothing and enhancing the shower rinsing effect. When the amount of clothes (the amount of cloth) is small or in the case of synthetic fibers (hydrophobic fibers), the washing water contained in the clothes is easily drained even if the number of rotations of the drum 4 during the intermediate dehydration is low to some extent. .

  Therefore, as described above, in the shower rinsing of the present embodiment, the cloth amount is detected by the cloth amount detector 50 of the control device 41 in advance, and the cloth quality is detected by the cloth detector 51. And when the amount of cloth is below the reference value or when the cloth is a hydrophobic fiber, in the high-speed dewatering (intermediate dewatering) performed before shower rinsing, the rotational speed of the drum 4 exceeds 780 rpm. The dehydration is omitted and the process is shifted to a shower rinse at 780 rpm.

  Therefore, the intermediate dehydration time before the shower rinsing can be shortened by the amount that the ultra-high speed dehydration is omitted, and the rinsing process can be shortened. However, if the amount of fabric exceeds the reference value even if the fabric is a hydrophobic fiber, it is desirable to perform the ultra-high speed dewatering during the high speed dewatering.

  In addition, when the fabric is a hydrophobic fiber, moisture in the clothes is more easily removed. Therefore, the shower rinsing time T4 at 780 rpm can be made shorter than the time T2 in the case of the first embodiment, so that further time reduction of the rinsing process can be achieved.

  Furthermore, when the fabric is a hydrophobic fiber, it is difficult for water to remain in the clothes of the laundry 7, so that the remaining amount of the detergent-containing water can be further reduced by the shower rinsing. Therefore, it is possible to reduce the time for the rinsing process after the shower rinsing and further shorten the time for the rinsing process.

  In the present embodiment, as a method of detecting the cloth amount by the cloth amount detector 50, “the drum 4 loaded with the laundry 7 is rotated by the main motor 17 and the cloth amount is determined by the fluctuation value of the motor torque. However, the method for detecting the amount of cloth in the present invention is not limited to this. For example, the moment of inertia including the load between the washing tub and the cloth may be calculated using the measured angular velocity at the time of acceleration and deceleration, and the cloth amount may be obtained by referring to a table based on the calculated moment of inertia. Alternatively, “less”, “more” or the like may be selected by a selection key of the operation display unit 5. In this case, the selection key constitutes the cloth amount detection unit.

  Further, in the present embodiment, as the cloth quality detection method by the cloth quality detection unit 51, “the first after the tumbling is performed by supplying water to the drum 4 in which the laundry 7 is charged up to the set water level. It is exemplified that “the water level change amount is obtained, the second water level change amount is obtained after tumbling for a short time, and the fabric quality is determined based on both water level change amounts”. The quality detection method is not limited to this. For example, “cotton”, “synthetic fiber” or the like can be selected by a selection key of the operation display unit 5. In this case, the selection key constitutes the cloth quality detection unit.

Third Embodiment In the present embodiment, the “rinse rinse” rinsing effect in the rinsing step is enhanced to shorten the time. The basic structure and control block of the drum type washing machine in the present embodiment are the same as the structure shown in FIGS. 1 and 2 and the control block shown in FIG. 5 in the first embodiment. Therefore, in the present embodiment, description will be made using the structure of the drum type washing machine shown in FIGS. 1 and 2 and the control block shown in FIG.

  In the rinsing process, in the intermediate dehydration (high-speed dehydration after the last shower rinsing) performed immediately before the `` rinsing process '' performed in the final stage, the water for `` rinsing '' is supplied from the time of deceleration just before the end of the intermediate dehydration. This is desirable because it can reduce the time for the “rinse process”. However, in the water supply in the drum type washing machine of the above-mentioned Patent Document 1, since the flow rate is too high, the water level in the water tank during high-speed rotation rapidly increases, and there is a problem because operation noise and vibration increase. Therefore, in the above-described Patent Document 1, water for “rinse” is supplied after the final intermediate dehydration is completed.

  Therefore, in the said patent document 1, the waiting time until the water quantity in a water tank reaches a preset water quantity is needed at the time of "a rinsing process", and the time of the said rinse process will become long. Furthermore, after the final intermediate dehydration, the clothes stick to the inner wall of the drum due to centrifugal force. Therefore, even if the tumbling operation is performed during the “rinsing process”, the washing cannot be performed, and the rinsing effect sufficient for the operation time cannot be obtained until the clothes are peeled off from the inner wall of the drum.

  In the present embodiment, the shower nozzle 25 can perform diffusive spray while swirling a shower made of granular water having a small particle diameter. Moreover, the shower nozzle 25 is attached to the upper edge part of the water tank opening part 15 so that the front-end | tip part may oppose the drum opening part 18, and it sprays water in the shower shape toward diagonally downward. Therefore, the water sprayed in the shower shape enters the drum 4 while being diffused from the drum opening 18 and falls on the laundry 7.

  Therefore, in the present embodiment, by using a shower that is diffused and jetted while swirling from the shower nozzle 25, the rinsing effect of “reserve rinsing” is enhanced and the time is shortened.

  The sequence diagram of the rinsing process executed by the rinsing process control unit 48 and the shower rinsing control unit 49 in the present embodiment is substantially the same as the sequence diagrams shown in FIGS. 6 and 7. However, in the present embodiment, in the sequence diagram shown in FIG. 6, the second water supply valve 14 is turned on (opened) as shown by the broken line (A) at the time t4 when the high speed dewatering after the last shower rinsing is completed. Thus, water is supplied to the shower nozzle 25. Furthermore, as shown by the broken line (B), the drain valve 30 is turned off (closed), and the discharge of water in the water tank 6 is stopped. Further, in the sequence diagram shown in FIG. 7, at the time t13 when the high-speed dewatering after the last shower rinsing is completed, as shown by the broken line (C), the second water supply valve 14 is turned on (opened) to the shower nozzle 25. Water is supplied. Furthermore, as shown by a broken line (D), the drain valve 30 is turned off (closed), and the discharge of water in the water tank 6 is stopped.

  Thus, at the time of deceleration after completion of the high-speed dehydration after the last shower rinsing, water for “rinse rinsing” is supplied by the shower sprayed and diffused from the shower nozzle 25. Therefore, when the rotational speed of the drum 4 reaches 0 rpm and the dehydration is completed, water is supplied into the water tank 6 to such an extent that “the rinsing process” can be performed. Therefore, there is no need to wait for the amount of water in the water tank 6 to reach the set amount of water during the “rinse treatment”, and the time for the rinsing step can be shortened.

  Furthermore, the shower sprayed and diffused while turning obliquely downward from the shower nozzle 25 enters the drum 4 while being diffused from the drum opening 18 and falls onto the laundry 7. Accordingly, water can be supplied to the clothes attached to the inner peripheral surface of the drum 4 as a whole, and the clothes that have become heavier and contain water can be easily peeled off by tumbling during the “rinsing process”. . Therefore, the tumbling by the tumbling can be effectively performed, and a sufficient rinsing effect can be obtained.

Fourth Embodiment This embodiment enhances the “push-washing” washing effect in the washing process. The basic structure and control block of the drum type washing machine in the present embodiment are the same as the structure shown in FIGS. 1 and 2 and the control block shown in FIG. 5 in the first embodiment. Therefore, in the present embodiment, description will be made using the structure of the drum type washing machine shown in FIGS. 1 and 2 and the control block shown in FIG.

  In the washing process by the drum type washing machine, after supplying water together with the detergent into the water tank, the drum is rotated to separate the dirt of the laundry by mechanical force. Specifically, after the water is supplied, the clothes are first adapted to get wet with the washing water. After that, the drum is rotated at a rotation speed that does not cause the clothes to stick to the inner peripheral surface of the drum, and the clothes that are lifted with the rotation of the drum soak up dirt from the clothes due to the impact of falling by its own weight. Wash. Next, the drum is rotated at such a rotational speed that the garment sticks to the inner peripheral surface of the drum, and so-called push washing is performed in which the dirt floating from the garment is pushed out by centrifugal force by centrifugal force.

  At the time of the above washing, it is effective to increase the rotational speed of the drum to increase the centrifugal force. However, high-speed rotation of the drum when washing water is accumulated in the drum and high-speed rotation of the drum when the laundry is not even may cause large vibrations and damage the main body. . Therefore, in the said patent document 1, the rotation speed of a drum is suppressed and the said washing is performed. In that case, the centrifugal force acts strongly on the side close to the inner peripheral surface of the drum, and the dirt floating from the clothes can be effectively pushed out. However, the centrifugal force is weak on the center side of the drum, so that effective washing cannot be expected.

  In the present embodiment, the shower nozzle 25 can perform a diffusive jet at a high pressure while swirling a shower made of granular water having a small particle size. Accordingly, the shower water sprayed from the shower nozzle 25 can easily penetrate into the clothes and can effectively push out the dirt floating from the clothes. Therefore, in the present embodiment, the above washing is performed using a shower from the shower nozzle 25.

  FIG. 8 shows a sequence diagram of the washing process executed by the washing process control unit 52 of the control device 41 in the present embodiment. In FIG. 8, the rotation speed of the main motor 17 (drum 4) (+ side rotates clockwise,-side rotates left) and the second water supply valve 14 is turned on / off from the top.

As shown in FIG. 8, when the washing operation is started by the washing process control unit 52, the second water supply valve 14 is turned off (closed ) . The drain valve 30 is always off. At time t21, the main motor 17 is rotated to the right to start the right rotation of the drum 4, and the rotation speed of the drum 4 is increased to 50 rpm by the inverter 47.

  Thus, when the drum 4 is rotated to the right at a rotational speed of 50 rpm, “tap washing” is performed in which the clothes that are lifted with the rotation of the drum 4 float dirt by the impact of dropping by its own weight.

  Then, when the “right-hand swipe” at 50 rpm is performed for a time T5, the second water supply valve 14 is turned on (opened) at time t22, and water is supplied to the shower nozzle 25. Further, the rotation speed of the drum 4 is increased to 100 rpm by the inverter 47.

  Thus, when the drum 4 is rotated to the right at a rotational speed of 100 rpm, the clothes stick to the inner peripheral surface of the drum 4 and the dirt that floats from the clothes by the “right-hand swipe” is pushed out by centrifugal force. Washing "is performed. At that time, from the shower nozzle 25, a shower made of granular water having a small particle diameter is sprayed and diffused at a high pressure while swirling. Therefore, even on the center side of the drum 4 where the centrifugal force is weak, the sprayed spray-sprayed water easily penetrates into the clothing, and the dirt floating from the clothing is effectively pushed out. As a result, the washing effect can be enhanced without increasing the rotational speed of the drum 4 more than necessary.

  In this way, when the “right rotation push washing” at 100 rpm is performed for the time T6, the second water supply valve 14 is turned off (closed) at the time t23, and the water supply to the shower nozzle 25 is stopped. Further, the rotation speed of the drum 4 is reduced to 0 rpm by the inverter 47.

  Similarly, at time t24, the drum 4 is rotated counterclockwise at 50 rpm to perform “counterclockwise swirling”. At time t25, water is supplied to the shower nozzle 25 and the drum 4 is rotated counterclockwise at 100 rpm to “left "Rotating push-washing" is performed, and at time t26, the water supply to the shower nozzle 25 is stopped and the drum 4 is reduced to 0 rpm. In this way, when the “right swirling” → “right swirling” → “left swirling” → “left swirling” is repeated a predetermined number of times, the washing process is completed and the dehydrating operation is started. Transition.

  As described above, in the present embodiment, at the time of “push-washing” in the washing process, the shower nozzle 25 is configured to perform diffusive injection at a high pressure while swirling a shower made of granular water having a small particle diameter. . Therefore, the water in the shower can easily penetrate into the garment and effectively push out the floating dirt from the garment. In this way, the washing effect can be enhanced without increasing the rotational speed of the drum 4 more than necessary.

  In the present embodiment, “tapping” is performed at 50 rpm. However, the present invention is not limited to 50 rpm, and the rotation in which the laundry 7 lifted along with the rotation of the drum 4 can fall by its own weight is possible. Any number is acceptable. Further, although “push-washing” is performed at 100 rpm, the number of rotations is not limited to 100 rpm, and may be any number of rotations that allows the laundry 7 to stick to the inner peripheral surface of the drum 4.

-5th Embodiment This Embodiment is related with the installation position of the said shower nozzle 25. FIG. The basic structure and control block of the drum type washing machine in the present embodiment are the same as the structure shown in FIGS. 1 and 2 and the control block shown in FIG. 5 in the first embodiment. Therefore, in the present embodiment, description will be made using the structure of the drum type washing machine shown in FIGS. 1 and 2 and the control block shown in FIG.

  In a drum-type washing machine, in the washing process, dirt adhered to clothes is lifted and pushed out by the action of detergent or physical force (such as rubbing between clothes or centrifugal force). Further, in the rinsing process, the dirt floating from the clothes and the pushed-out dirt in the washing process are removed together with the detergent residue with water.

  In particular, in the rinsing step, washing water and dirt remaining on the clothes are removed by shower radiating water and centrifugal force by performing shower rinsing that radiates a shower while the drum is rotated.

  At that time, shower water radiated from the nozzle can be sprinkled evenly on the laundry stuck to the inner peripheral surface of the drum, and the radiated shower water should be discharged quickly. Is desirable. In particular, when the shower rinsing is performed at a high speed of 780 rpm as in the first embodiment, the rinsing water is difficult to escape from the drain 26 provided in the lower part of the water tank 6. At the same time, the rinsing effect is reduced.

By the way, in order for the shower water sprayed into the drum 4 from the shower nozzle 25 to escape from the drain 26 provided in the lower part of the water tank 6, the water that has penetrated into the clothes moves to the outside by centrifugal force, Further, it needs to be discharged into the water tank 6 through the through-hole 19 of the drum 4 and flow in the water tank 6 toward the drain port 26, which requires a certain amount of time. Therefore, when the shower nozzle 25 is attached to the upper center of the water tank 6 so as to face downward, the shower nozzle 25 is jetted toward a region close to the drain port 26, and the jetted water reaches the drain port 26. The time can not be earned and the drum 4 rotates.

  FIG. 9 is a schematic view of the drum 4 and the water tank 6 in the present embodiment as viewed from the drum opening 18 and the water tank opening 15 side. However, FIG. 9A shows the positional relationship of the shower nozzle 25 with respect to the drum 4. FIG. 9B is a diagram showing the positional relationship between the shower nozzle 25 and the drain port 26. Here, the position of the shower nozzle 25 indicates the position of the injection port 39a (see FIG. 4) and is not the mounting position of the shower nozzle 25.

  In the shower rinsing according to the present embodiment, as in the case of the first embodiment, the drum 4 is rotated at a high speed of 780 rpm in one direction, and the shower is diffused and jetted from the shower nozzle 25. Hereinafter, it is assumed that the rotation direction of the drum 4 during the shower rinsing is clockwise (clockwise) as shown by an arrow (E) in FIG. 9B.

  In FIG. 9B, the drum 4 rotates clockwise (hereinafter simply referred to as clockwise) as indicated by an arrow (E). In that case, the right side in the drawing of the drum 4 rotates in the direction of gravity, whereas the left side in the drawing rotates in the direction opposite to the direction of gravity. Therefore, in order to efficiently drain water from the drain port 26, it is preferable that the shower is diffused and jetted toward the right side of the rotating shaft (not shown) in the drum 4. However, in consideration of the gravity acting on the shower spray water sprayed from the shower nozzle 25, the position of the spray nozzle 39a of the shower nozzle 25 (hereinafter simply referred to as “the position of the shower nozzle 25”) is shown in FIG. As shown in FIG. 9 (a), the edge of the drum opening 18 is on the side rotating in the direction opposite to the direction of gravity of the drum 4 and above the rotational axis of the drum 4. Specifically, the vicinity of a position at an angle of 45 ° counterclockwise from the apex of the drum 4 is desirable.

  As described in the first embodiment, the shower nozzle 25 diffuses and sprays a shower made of granular water having a small particle diameter. Therefore, as shown in FIG. 9 (a), from the injection port 39a of the shower nozzle 25 installed in the vicinity of the position at an angle of 45 ° counterclockwise from the apex of the drum 4, and further toward the lower right. As shown in FIG. 2, the shower is diffused and sprayed downwardly from the rear part (bottom part) of the drum 4 so as to be on the right side of the drum 4 and downward as shown in FIG. 9 (a). Diffusion spray can be performed while swirling the shower over a wide range. Thus, shower rinsing can be effectively performed with a small amount of water.

  Further, as shown by the arrow (E), the drum 4 rotating clockwise is showered obliquely downward to the right from the injection port 39a of the shower nozzle 25 arranged at the upper left position toward the drum 4. It is designed to make a diffuse jet. Therefore, the shower sprayed and diffused is on the right side in the drawing rotating in the direction of gravity in the drum 4 and sprinkled downward from the rotating shaft of the drum 4, and the shower water is drained. It can move quickly toward the mouth 26. Furthermore, the shower water is diffused and sprayed toward the lower right side of the drum 4, not toward the drain port 26, so that it is possible to gain some time until the radiated water reaches the drain port 26.

  From the above, drainage from the drainage port 26 can be performed efficiently.

  In the present embodiment, the case where the drum 4 is rotated clockwise (clockwise) during the shower rinsing has been described as an example. However, when the drum 4 is rotated counterclockwise (counterclockwise), The shower may be diffused and sprayed from the shower nozzle 25 disposed in the vicinity of an angle of 45 degrees clockwise from the apex of the drum 4 toward the lower left.

-6th Embodiment This Embodiment is related with the last dehydration process performed after the said rinse process is complete | finished. FIG. 10 shows a sequence diagram regarding the final dehydration step.

  In FIG. 10, “balance” is an operation for eliminating the unbalance of the drum 4, and the drum 4 is sequentially rotated in the forward rotation, rotation stop, reverse rotation, and rotation stop, thereby washing the laundry 7 in the drum 4. Tumbling. When it is detected by the “balance detection” that the unbalance has been eliminated, “low speed dewatering 1” at 450 rpm and “low speed dewatering 2” at 600 rpm are performed. Subsequently, after shifting to high speed dewatering, “high speed dewatering 1” at 780 rpm is performed, followed by “high speed dewatering 2” at 1000 rpm. Note that the “fan” in FIG. 10 is a circulation fan in the air circulation path.

  As described above, in the final dehydration step, the outer casing 1 is set to be higher than the resonance rotational speed (400 rpm to 600 rpm) at which the outer box 1 resonates, and the water in the laundry 7 can be sufficiently squeezed. The rotation speed of the drum 4 is 780 rpm. Finally, the rotational speed of the drum 4 is increased to 1000 rpm, and the washing water is completely squeezed out with the final squeeze.

  This concept is the same in the case of the shower rinsing described above. As shown in FIG. 6, the rotational speed of the drum 4 is higher than the resonance rotational speed, and the water in the laundry 7 is sufficiently squeezed out. Perform a shower rinse at 780 rpm set to be possible. Then, after the second water supply valve 14 is turned off (closed) and water supply to the shower nozzle 25 is stopped, the rotational speed of the drum 4 is increased to 1000 rpm, and the washing water containing the detergent is completely squeezed out with the last one stop. I am doing so.

  Note that the rotation speed of the main motor 17 mentioned in each of the above embodiments is merely an example, and is not limited to the disclosed rotation speed.

  Further, in the drum type washing machine of the present invention, it is not necessary to execute all of the above-described embodiments, and it is possible to carry out a combination of the necessary embodiments as appropriate.

Hereinafter, when this invention is summarized, the drum type washing machine of this invention is:
Outer box 1 and
A water tank 6 disposed in the outer box 1;
A drum 4 rotatably disposed in the water tub 6 for accommodating the laundry 7;
A shower nozzle 25 that diffuses and sprays water into the drum 4 while swirling water into the drum 4;
A drive unit 17 that rotationally drives the drum 4;
A speed control unit 47 that variably controls the rotation speed of the drum 4;
A shower water supply unit 14 for supplying water to the shower nozzle 25;
A controller 41 that controls the drive unit 17, the speed control unit 47, and the shower water supply unit 14 to perform a washing process, a rinsing process, and a dehydrating process;
The rinse step is
An intermediate dehydration process for dehydrating the laundry 7;
After the intermediate dehydration process, the sprayed water from the shower nozzle 25 is applied to the laundry 7 and the laundry 7 is rinsed and showered.
The control device 41 controls the shower water supply unit 14 to supply water to the shower nozzle 25 in the shower rinsing process, and the outer box 1 controls the rotation speed of the drum 4 with respect to the speed control unit 47. It is characterized by including a shower rinsing control section 49 for instructing control to be performed at a rinsing rotational speed higher than the resonant rotational speed that resonates.

  According to the above configuration, the water radiated from the shower nozzle 25 toward the inside of the drum 4 has a small particle diameter and is diffused and jetted in a shower shape while swirling. Therefore, it is easy to penetrate into clothing. Therefore, in the shower rinsing process, by using shower water from the shower nozzle 25, even if the rotational speed of the drum 4 is set to a rinse rotational speed higher than the resonant rotational speed at which the outer case 1 resonates, The shower water can easily penetrate into the clothes, and physical force such as centrifugal force can be applied to the laundry 7 by the high speed rotation of the drum 4.

  Furthermore, in the shower rinsing process, the decrease in the rotation speed of the drum 4 after the intermediate dehydration is up to a rinse rotation speed higher than the resonance rotation speed at which the outer case 1 resonates. Therefore, when the rotational speed of the drum 4 is reduced, it is possible to eliminate the occurrence of unpleasant vibration due to the resonance of the washing machine.

  That is, according to the present invention, the drum 4 can be rotated at a high speed during the shower rinsing, the waiting time for the decrease in the drum 4 rotation speed is unnecessary, and the rinsing is effectively performed by physical force such as centrifugal force. Generation of unpleasant vibration due to resonance of the main body can be eliminated.

The drum type washing machine of the present invention is
Outer box 1 and
A water tank 6 disposed in the outer box 1;
A drum 4 rotatably disposed in the water tub 6 for accommodating the laundry 7;
A shower nozzle 25 that diffuses and sprays water into the drum 4 while swirling water into the drum 4;
A drive unit 17 that rotationally drives the drum 4;
A speed control unit 47 that variably controls the rotation speed of the drum 4;
A shower water supply unit 14 for supplying water to the shower nozzle 25;
A control device 41 that controls the drive unit 17, the speed control unit 47, and the shower water supply unit 14 to perform a washing process, a rinsing process, and a dehydrating process;
A cloth amount detection unit 50 for detecting the amount of cloth that is the amount of the laundry 7;
The rinse step is
An intermediate dehydration process for dehydrating the laundry 7;
After the intermediate dehydration process, the sprayed water from the shower nozzle 25 is applied to the laundry 7 and the laundry 7 is rinsed and showered.
In the intermediate dehydration process, the control device 41 sets the maximum rotation speed of the drum 4 to the speed control unit 47 when the cloth amount detected by the cloth amount detection unit 50 is equal to or less than a reference value. It is characterized by including a rinsing process control unit 48 that instructs to control the rinsing rotational speed higher than the resonant rotational speed at which the outer case 1 resonates.

  According to the above configuration, when the amount of cloth is equal to or less than a reference value, that is, when moisture easily escapes from the laundry 7, the maximum rotational speed of the drum 4 in the intermediate dehydration process is controlled to the rinse rotational speed. Therefore, it is possible to omit the ultra-high speed dehydration at a higher rotational speed than the rinsing rotational speed and to proceed to the shower rinsing at the rinsing rotational speed as it is. Therefore, it is possible to shorten the time of the rinsing process by shortening the time of the intermediate dehydration process by the amount that the ultra-high speed dewatering is omitted.

Further, the rotational speed of the drum 4 in the case of transition to rinse the shower, Ru higher the rinsing rpm der than the resonance rotational speed of the outer casing 1 resonates. Therefore, at the time of shifting to the shower rinsing, it is possible to eliminate the occurrence of unpleasant vibration due to resonance of the washing machine.

In the drum type washing machine of one embodiment,
A cloth amount detection unit 50 for detecting the amount of cloth that is the amount of the laundry 7;
In the intermediate dewatering process, the control device 41 sets the maximum rotation speed of the drum 4 to the speed control unit 47 when the cloth amount detected by the cloth amount detection unit 50 is equal to or less than a reference value. A rinsing process control unit 48 for instructing the rotational speed to be controlled is included.

  According to this embodiment, when the amount of cloth is less than the reference value, that is, when moisture easily escapes from the laundry 7, the maximum rotational speed of the drum 4 in the intermediate dehydration process is set to the rinse rotational speed. Since it is controlled, it is possible to omit the ultra-high speed dehydration at a higher rotational speed than the rinsing rotational speed and shift to the shower rinsing at the rinsing rotational speed as it is. Therefore, it is possible to shorten the time of the rinsing process by shortening the time of the intermediate dehydration process by the amount that the ultra-high speed dewatering is omitted.

Further, the rotational speed of the drum 4 in the case of transition to rinse the shower, Ru higher the rinsing rpm der than the resonance rotational speed of the outer casing 1 resonates. Therefore, at the time of shifting to the shower rinsing, it is possible to eliminate the occurrence of unpleasant vibration due to resonance of the washing machine.

In the drum type washing machine of one embodiment,
Drain portions 30 and 31 for draining the water in the water tank 6 are provided,
The shower rinsing control section 49 is also adapted to control the drainage sections 30 and 31,
The rinsing step is a final process, and includes a rinsing process for rinsing the laundry 7 by storing water in the drum 4 and tumbling.
The shower rinsing control unit 49 controls the shower water supply unit 14 to supply water to the shower nozzle 25 at the time of deceleration after completion of the intermediate dehydration in the intermediate dehydration process immediately before the transition to the rinsing process. The drainage parts 30 and 31 are controlled to stop the drainage of the water tank 6.

  According to this embodiment, in the intermediate dehydration process immediately before the transition to the rinsing process, the shower water is diffused and jetted from the shower nozzle 25 at the time of deceleration after the completion of the intermediate dehydration, and the water in the water tank 6 is discharged. Since it stops, it is possible to supply water for “rinse” during deceleration after the end of the intermediate dehydration. Therefore, it is not necessary to wait for the water tank 6 to reach the set amount of water during the “irrigation process”, and the time for the rinsing process can be shortened.

  Further, water having a small particle diameter that is diffused and sprayed in a shower-like manner while swirling from the shower nozzle 25 is sprinkled on the laundry 7 attached to the inner peripheral surface of the drum 4 by the intermediate dehydration to supply water. Because of the above, it can be easily peeled off by tumbling in the rinsing process. Therefore, the washing by tumbling can be performed effectively.

In the drum type washing machine of one embodiment,
The shower nozzle 25 is
The edge of the opening 18 in the drum 4, the side rotating in the direction opposite to the direction of gravity in the drum 4 in the shower rinsing process, and further from the rotational axis of the drum 4 In the vicinity of the edge located on the upper side, an injection port 39a is located,
In the shower rinsing process, shower water is diffused and jetted obliquely downward on the side rotating in the direction of gravity in the drum 4 and below the rotation axis of the drum 4. It has become.

  According to this embodiment, in the shower rinsing process, it is on the side rotating in the direction of gravity in the drum 4 from the injection port 39a of the shower nozzle 25, and the rotation axis of the drum 4 The shower water is diffused and sprayed obliquely downward toward the lower side.

  Therefore, the shower water diffused and sprayed from the shower nozzle 25 can quickly move toward the drain 26 of the water tank 6. That is, the drainage efficiency of the rinsing water in the case of shower rinsing by high speed rotation of the drum 4 can be increased.

The drum type washing machine of the present invention is
Outer box 1 and
A water tank 6 disposed in the outer box 1;
A drum 4 rotatably disposed in the water tub 6 for accommodating the laundry 7;
A shower nozzle 25 that diffuses and sprays water into the drum 4 while swirling water into the drum 4;
A drive unit 17 that rotationally drives the drum 4;
A speed control unit 47 that variably controls the rotation speed of the drum 4;
A shower water supply unit 14 for supplying water to the shower nozzle 25;
A controller 41 that controls the drive unit 17, the speed control unit 47, and the shower water supply unit 14 to perform a washing process, a rinsing process, and a dehydrating process;
The washing process
Tapping and washing process to float dirt from the laundry 7;
And a washing process for extruding dirt floating from the laundry 7 with centrifugal force by centrifugal force,
The control device 41 controls the shower water supply unit 14 to supply water to the shower nozzle 25 in the push-washing process, and controls the rotation speed of the drum 4 with respect to the speed control unit 47 within the drum 4. It is characterized by including a washing process control unit 52 for instructing to control the rotational speed at which the laundry 7 can stick to the peripheral surface.

  According to the above configuration, the water radiated from the shower nozzle 25 toward the inside of the drum 4 has a small particle diameter and is diffused and jetted in a shower shape while swirling. Therefore, it is easy to penetrate into clothing. Accordingly, by using shower water from the shower nozzle 25 in the washing process of the washing process, the shower water having a small particle diameter can be easily obtained without increasing the rotational speed of the drum 4 and increasing the centrifugal force. It can penetrate into the laundry 7 and can effectively extrude dirt floating from the laundry 7 by tapping.

  That is, according to the present invention, in the washing process of the washing process, the washing can be performed effectively without increasing the rotational speed of the drum 4 more than necessary.

The drum type washing machine of the present invention is
Outer box 1 and
A water tank 6 disposed in the outer box 1;
A drum 4 rotatably disposed in the water tub 6 for accommodating the laundry 7;
A shower nozzle 25 that diffuses and sprays water into the drum 4 while swirling water into the drum 4;
A drive unit 17 that rotationally drives the drum 4;
A speed control unit 47 that variably controls the rotation speed of the drum 4;
A shower water supply unit 14 for supplying water to the shower nozzle 25;
A control device that controls the drive unit 17, the speed control unit 47, and the shower water supply unit 14 to spray water sprayed from the shower nozzle 25 onto the laundry 7 and rinse the laundry 7 in a shower. 41,
The shower nozzle 25 is
The edge of the opening 18 in the drum 4, which is the side rotating in the direction opposite to the direction of gravity in the drum 4 during the shower rinsing, and from the rotational axis of the drum 4 In the vicinity of the edge located on the upper side, an injection port 39a is located,
At the time of the shower rinsing, shower water is diffused and jetted obliquely downward on the side rotating in the direction of gravity in the drum 4 and below the rotating shaft of the drum 4. It is characterized by becoming.

  According to the above configuration, at the time of the shower rinsing, the drum 4 is on the side rotating in the direction opposite to the direction of gravity and is located above the rotation axis of the drum 4. The shower water is diffused obliquely downward from the injection port 39a of the shower nozzle 25 on the side rotating in the direction of gravity in the drum 4 and below the rotation axis of the drum 4. I try to spray.

  Therefore, the shower water diffused and sprayed from the shower nozzle 25 can quickly move toward the drain 26 of the water tank 6. That is, the drainage efficiency of the rinsing water in the case of shower rinsing by high speed rotation of the drum 4 can be increased.

DESCRIPTION OF SYMBOLS 1 ... Outer box 4 ... Drum 5 ... Operation display part 6 ... Water tank 11 ... Shower water supply path 13 ... 1st water supply valve 14 ... 2nd water supply valve 15 ... Water tank opening 17 ... Main motor 25 ... Shower nozzle 26 ... Drain 30 ... Drain valve 31 ... Drain motor 33 ... Air trap 34 ... Pressure pipe 36 ... Nozzle joint 37 ... Nozzle body 38 ... Warler (swivel)
38a ... Elliptical plate 38b ... Turning groove 39 ... Cap 39a ... Injection port 41 ... Control device 42 ... Water level sensor 43 ... Rotational speed sensor 46 ... Load drive circuit 47 ... Inverter 48 ... Rinsing process control unit 49 ... Shower rinse control unit 50 ... Cloth amount detection unit 51 ... Cloth quality detection unit 52 ... Washing process control unit 53 ... Timer

Claims (6)

An outer box,
A water tank disposed in the outer box;
A drum that is rotatably arranged in the aquarium and contains laundry;
A shower nozzle that diffuses and sprays water in the form of a shower while swirling water into the drum;
A drive unit for rotationally driving the drum;
A speed control unit that variably controls the rotation speed of the drum;
A shower water supply unit for supplying water to the shower nozzle;
A controller that controls the drive unit, the speed control unit, and the shower water supply unit to perform a washing process, a rinsing process, and a dehydrating process;
The rinse step is
An intermediate dehydration process for dehydrating the laundry;
After the intermediate dehydration process, the sprayed water sprayed from the shower nozzle is applied to the laundry, and the laundry has a shower rinsing process,
The control device, in the shower rinsing process includes a Cie showers rinse control unit to the water supply to the shower nozzle to control the shower water supply,
Furthermore, a drainage part for draining the water in the water tank is provided,
The shower rinse control unit is also adapted to control the drainage unit,
The rinsing step is a final process, and includes a rinsing process for rinsing the laundry by storing water and tumbling the drum.
The shower rinsing control unit controls the shower water supply unit to supply water to the shower nozzle at the time of deceleration after the completion of the intermediate dehydration process in the intermediate dehydration process immediately before shifting to the rinsing process. A drum-type washing machine characterized in that the drainage of the water tank is stopped by controlling the section, and water is supplied in the rinsing process by the water diffused and sprayed from the shower nozzle . An outer box,
A water tank disposed in the outer box;
A drum that is rotatably arranged in the aquarium and contains laundry;
A shower nozzle that diffuses and sprays water in the form of a shower while swirling water into the drum;
A drive unit for rotationally driving the drum;
A speed control unit that variably controls the rotation speed of the drum;
A shower water supply unit for supplying water to the shower nozzle;
A control device that controls the drive unit, the speed control unit, and the shower water supply unit to perform a washing process, a rinsing process, and a dehydrating process;
A cloth amount detection unit that detects the amount of cloth that is the amount of laundry,
The rinse step is
An intermediate dehydration process for dehydrating the laundry;
After the intermediate dehydration process, the sprayed water sprayed from the shower nozzle is applied to the laundry, and the laundry has a shower rinsing process,
In the intermediate dehydration process, the outer casing resonates the maximum rotation speed of the drum with respect to the speed control unit when the fabric amount detected by the fabric amount detection unit is equal to or less than a reference value in the intermediate dehydration process. includes a rinsing step controller for instructing to control the high rinse rotation speed than the resonance rotational speed that,
Furthermore, a drainage part for draining the water in the water tank is provided,
The shower rinse control unit is also adapted to control the drainage unit,
The rinsing step is a final process, and includes a rinsing process for rinsing the laundry by storing water and tumbling the drum.
The shower rinsing control unit controls the shower water supply unit to supply water to the shower nozzle at the time of deceleration after the completion of the intermediate dehydration process in the intermediate dehydration process immediately before shifting to the rinsing process. A drum-type washing machine characterized in that the drainage of the water tank is stopped by controlling the section, and water is supplied in the rinsing process by the water diffused and sprayed from the shower nozzle . In the drum type washing machine according to claim 1,
A cloth amount detection unit that detects the amount of cloth that is the amount of laundry is provided,
The shower rinsing control unit instructs the speed control unit to control the rotational speed of the drum to a rinsing rotational speed higher than a resonant rotational speed at which the outer box resonates,
In the intermediate dehydration process, when the cloth amount detected by the cloth amount detector is equal to or less than a reference value, the control device sets the maximum rotation speed of the drum to the rinse rotation speed with respect to the speed controller. A drum-type washing machine comprising a rinsing process control unit for instructing control. In the drum type washing machine according to any one of claims 1 to 3 ,
The shower nozzle
The edge of the opening in the drum, and in the shower rinsing process, is located on the side rotating in the direction opposite to the direction of gravity in the drum and further above the rotation axis of the drum In the vicinity of the edge, the injection port is located,
In the shower rinsing process, shower water is diffused and jetted obliquely downward on the side rotating in the direction of gravity in the drum and further below the rotating shaft of the drum. A drum-type washing machine characterized by An outer box,
A water tank disposed in the outer box;
A drum that is rotatably arranged in the aquarium and contains laundry;
A shower nozzle that diffuses and sprays water in the form of a shower while swirling water into the drum;
A drive unit for rotationally driving the drum;
A speed control unit that variably controls the rotation speed of the drum;
A shower water supply unit for supplying water to the shower nozzle;
A controller that controls the drive unit, the speed control unit, and the shower water supply unit to perform a washing process, a rinsing process, and a dehydrating process;
The washing process
Tapping and washing process to lift dirt from the laundry,
A push-washing process that extrudes dirt floating from the laundry by centrifugal force with centrifugal force,
The control device controls the shower water supply unit to supply water to the shower nozzle in the push-washing process, and sets the rotational speed of the drum to the inner peripheral surface of the drum with respect to the speed control unit. A drum-type washing machine including a washing process control unit for instructing to control the number of rotations to be stickable. An outer box,
A water tank disposed in the outer box;
A drum that is rotatably arranged in the aquarium and contains laundry;
A shower nozzle that diffuses and sprays water in the form of a shower while swirling water into the drum;
A drive unit for rotationally driving the drum;
A speed control unit that variably controls the rotation speed of the drum;
A shower water supply unit for supplying water to the shower nozzle;
The drive unit, the speed control unit and the shower water supply unit are controlled to perform a washing step, a rinsing step, and a dehydrating step, and in the rinsing step, the water sprayed and diffused from the shower nozzle is applied to the laundry, A controller for rinsing the laundry and rinsing the shower,
The shower nozzle
The edge of the opening in the drum, the side rotating in the direction opposite to the direction of gravity in the drum during the shower rinsing, and further above the rotation axis of the drum In the vicinity of the edge, the injection port is located,
At the time of the shower rinsing, shower water is diffused and jetted obliquely downward on the side rotating in the direction of gravity in the drum and below the rotation axis of the drum. and,
Furthermore, a drainage unit that is controlled by the control unit and drains the water in the water tank is provided.
The rinse step is
An intermediate dehydration process for dehydrating the laundry;
After the intermediate dehydration process, water sprayed from the shower nozzle is sprayed onto the laundry, and the laundry is rinsed and showered.
A final process comprising rinsing water in the drum and tumbling to rinse the laundry.
In the intermediate dehydration process immediately before the transition to the rinsing process, the control unit controls the shower water supply unit to supply water to the shower nozzle at the time of deceleration after the completion of the intermediate dehydration process. A drum-type washing machine that performs control to stop drainage of the water tank and to supply water in the rinsing process with water diffused and jetted from the shower nozzle .

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