JP5559112B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a drum type washing machine having a function of cleaning a tub.

  In some drum-type washing machines, dirt is attached to the inner tub and the outer tub. Therefore, there is a drum washing machine that can set a course for tub cleaning separately from the washing operation. However, in the course for the purpose of cleaning the tank, cleaning chemicals are necessary, and the operation of selecting the tank cleaning course by the user is complicated, and the cleaning work is complicated.

  Therefore, as another method for cleaning the tank of the drum type washing machine, by providing a bubble injection device for injecting bubbles at the bottom of the outer tub, and injecting bubbles into the dirt in a state where water is stored in the outer tub, A technique for removing dirt has been proposed (see Patent Document 1).

JP 2008-43651 A

  However, the technique described in Patent Document 1 has a problem that only a part of the lower side in the tank can be cleaned. Moreover, when it is going to remove dirt to the upper side in a tank, it is necessary to accumulate water to the upper side of a tank, and it becomes difficult to save water.

  This invention solves the said conventional problem, and makes it a subject to provide the drum type washing machine excellent in the tank washing | cleaning.

The present invention includes an outer tub that is supported in an anti-vibration manner and stores washing water therein, an inner tub that is contained in the outer tub and that stores laundry, and a driving device that rotationally drives the inner tub. A drum-type washing machine in which the center of rotation of the inner tub is inclined so that the opening side is higher , and the outer tub is formed at the opening of the outer tub main body and the front surface thereof. An outer tank cover is provided, and the cleaning water supplied from the water supply means is supplied to the water channel member provided in the upper part of the outer tank cover via the cleaning water supply pipe, and the bottom surface of the water channel member is The water tank has a water spout for spraying water on the outer peripheral surface of the inner tank.

  According to the present invention, the cleaning water is sprayed from the water spout of the water channel member provided in the upper part of the outer tub to the outer tub side and the inner tub side, so that the inner peripheral surface of the outer tub and the outer peripheral surface of the inner tub are contaminated. In addition, it is possible to provide a drum-type washing machine that can suppress adhesion of dust and trash and is excellent in washing the tank.

It is a perspective view which shows the external appearance of the drum type washing machine which concerns on 1st Embodiment. It is a side view which shows the internal structure of the drum type washing machine which concerns on 1st Embodiment. It is a perspective view which shows the internal structure of the drum type washing machine which concerns on 1st Embodiment. It is a rear view which shows the internal structure of the drum type washing machine which concerns on 1st Embodiment. It is a perspective view which shows the connection state of a water supply solenoid valve, a washing water supply hose, and a drainage hose. It is a longitudinal cross-sectional view of an outer tank water supply joint. It is a side view which shows the positional relationship of a washing water supply hose and a drainage hose. It is a top view which shows arrangement | positioning of the outer tub cover side nozzle of the drum type washing machine which concerns on 1st Embodiment. It is the sectional view on the AA line of FIG. The single unit of an outer tank cover side nozzle is shown, (a) is a front view, (b) is a side view, (c) is a top view, and (d) is a bottom view. It is an expanded sectional view which shows the flow of the water by an outer tank cover side nozzle. It is a top view which shows typically the washing | cleaning range by the outer tank cover side nozzle. It is a block diagram which shows the drum type washing machine which concerns on 1st Embodiment. It is a flowchart which shows the main control at the time of the driving | operation of the drum type washing machine which concerns on 1st Embodiment. It is a flowchart which shows the control in a tank cleaning process. It is a flowchart which shows the control in a spin-drying | dehydration process. It is a whole process table | surface which shows the opening / closing operation | movement of various water supply solenoid valves. It is a flowchart which shows another control in a tank cleaning process. It is a whole process table | surface which shows the opening / closing operation | movement of various water supply solenoid valves in another control. It is a flowchart which shows another control in a tank cleaning process. It is a partially omitted perspective view showing an outer tub and an inner tub inside a drum type washing machine according to a second embodiment. It is a top view which shows arrangement | positioning of the 1st nozzle and 2nd nozzle of the drum type washing machine which concerns on 2nd Embodiment. The single unit of a 1st nozzle is shown, (a) is a front view, (b) is a side view, (c) is a top view, (d) is a rear view. The 2nd nozzle is shown alone, (a) is a rear view, (b) is a right side view, (c) is a top view, and (d) is a front view. It is sectional drawing which shows the flow of the water from a 1st nozzle. It is a top view which shows the flow of the water from a 2nd nozzle. It is the BB sectional drawing of FIG. 27 which shows the flow of the water from a 2nd nozzle. It is CC sectional view taken on the line of FIG. 27 which shows the flow of the water from a 2nd nozzle. It is a top view which shows arrangement | positioning of an outer tank side nozzle. The single unit of an outer tank side nozzle is shown, (a) is a front view, (b) is a rear view. It is sectional drawing which shows the flow of the water from an outer tank side nozzle.

  Hereinafter, modes for carrying out the present invention (hereinafter referred to as “embodiments”) will be described in detail with reference to the drawings as appropriate. In the following description, a drum type washing machine (hereinafter referred to as a washing machine) capable of performing steps from washing to drying will be described as an example. Moreover, below, it demonstrates on the basis of the direction when the washing machine S1 is seen from the front.

(First embodiment)
As shown in FIG. 1, the washing machine S1 of the first embodiment has a casing 1 whose outer shell is configured by combining a steel plate and a resin molded product, and the casing 1 is mounted on a base 1h. It is configured. The housing 1 includes left and right side plates 1a and 1b (see FIG. 4 for 1b), 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 plates 1a and 1b are joined by a U-shaped upper reinforcing material (not shown), a front reinforcing material (not shown), and a rear reinforcing material (not shown), and include a base 1h. A box-shaped housing 1 is formed and has sufficient strength as a housing.

  A door 2 that closes an insertion port for putting in and out clothes (laundry, objects to be dried) is supported at a substantially center of the front cover 1c so as to be openable and closable by a hinge provided in the front reinforcing material. . A front cover 1 c in the vicinity of the door 2 is provided with a door release button 3 for releasing a lock mechanism (not shown) of the door 2. When the door release button 3 is pressed, the lock mechanism (not shown) is released and the door 2 is opened. When the door 2 is pressed against the front cover 1c, the door 2 is locked and closed. A front reinforcing material (not shown) has a circular opening for putting clothes in and out concentrically with an opening 20b (see FIG. 3) of an outer tub 20 (see FIG. 2) to be described later.

  An operation panel 4 including a power switch 4a, operation switches 4b and 4c, a display 4d, and the like is provided at the upper center of the housing 1. The operation panel 4 is electrically connected to a control device 60 (see FIGS. 2 and 3) provided at the lower part of the housing 1. Further, on the left side of the operation panel 4, a drawer-type tray 5 into which a detergent, a softening agent, or the like is charged is provided.

  In addition, on the right side of the operation panel 4, a pull-out drying filter 6 is provided. The dry filter 6 includes a mesh type filter 6a (see FIG. 3) so that lint and the like are removed. Cleaning of the dry filter 6 is performed by pulling out the dry filter 6 and taking out the mesh filter 6a (see FIG. 3). Further, the upper surface cover 1e is provided with a water supply hose connection port 7a from the water tap and a water absorption hose connection port 7b for remaining hot water in the bath.

  As shown in FIG. 2, the washing machine S <b> 1 is provided with an inner tub (rotary drum) 10 as a cylindrical washing and dewatering tub that is rotatably supported in the housing 1. The inner tub 10 has an opening 10a for putting clothes into and out of the front side (front side) end face, and has a large number of through holes 10h (see FIG. 11) for water flow and ventilation on its peripheral wall. Yes.

  A balance ring (also referred to as a fluid balancer) 10b integrated with the inner tank 10 is provided at the edge of the opening 10a. The balance ring 10b is configured by enclosing a fluid having a large specific gravity therein, and when the eccentricity occurs due to the bias of the laundry when the inner tub 10 rotates, the balance ring 10b is eccentric due to the movement of the fluid in the balance ring 10b. Has the function of canceling and maintaining the balance of rotation.

  A plurality of lifters 10 c extending in the depth direction (axial direction) are provided on the inner peripheral wall of the inner tank 10. When the inner tub 10 rotates during washing and drying, clothes and the like are lifted along the peripheral wall by the lifter 10c and centrifugal force, and are repeatedly moved by gravity. The rotation center O1 of the inner tub 10 is inclined so that the opening 10a side becomes higher.

  The washing machine S1 includes an inner tub 10 coaxially, and includes a cylindrical outer tub 20 having an open front surface. The outer tub 20 includes an outer tub body 21 and an outer tub cover 22. An opening 21s (see FIG. 11) on the front surface of the outer tub body 21 is provided with an outer tub cover 22 made of synthetic resin, which enables water to be stored in the outer tub 20. An opening 22a (see FIG. 8) for taking in and out clothes is formed at the center of the front side (front side) of the outer tub cover 22. The opening 22a and the opening provided in the front reinforcing member are connected by a rubber packing 23 (see FIG. 9). The packing 23 plays a role of maintaining the water tightness between the outer tub 20 and the door 2. This prevents water leakage during washing, rinsing and dehydration. A drain port 20 c is provided at the bottom bottom of the outer tub 20, and a drain hose 8 is connected thereto.

  The front end of the drain hose 8 is connected to a drain hole 101 provided in the floor G. In addition, a drain valve V is provided in the middle of the drain hose 8. Water is stored in the outer tub 20 by closing the drain valve V and supplying water, and opening the drain valve V in the outer tub 20. Water is discharged outside the aircraft.

  In the washing machine S1, a motor M for rotationally driving the inner tub 10 is attached to the center of the back surface (bottom surface center) of the outer tub 20. The rotating shaft m1 of the motor M passes through the outer tub 20 and is coupled to a metal flange 10e provided on the back surface of the inner tub 10. Further, the lower part of the outer tub 20 is supported by a plurality of suspensions 9 (consisting of coil springs and dampers) whose lower side is fixed to the base 1h. The upper portion of the outer tub 20 is supported by an auxiliary spring (not shown) attached to the upper reinforcing member, and is configured to prevent the outer tub 20 from falling in the front-rear direction.

  In addition, the washing machine S <b> 1 includes a blower duct (blower passage) 30 that passes through the back inner side and the upper inner surface of the housing 1. The blower duct 30 includes a duct 32 extending in the vertical direction on the back side of the outer tub 20 and a duct 33 extending on the upper surface side of the outer tub 20 from the rear to the front.

  An overflow hose 15 connected to join the drain hose 8 downstream of the drain valve V is connected to the lower portion of the duct 32. The upstream end of the hose 15 is connected so as to be positioned above the bellows 31 described later.

  A blower fan unit 40 including a fan 41 (blower unit) and a heater 42 (heater unit) is provided on the downstream side of the duct 33.

  Although not shown in the figure, a stainless steel plate (heat exchange plate) on which a large number of protrusions are formed is disposed in the duct 32 as, for example, a water-cooled dehumidifying mechanism. A water supply pipe (not shown) for flowing cooling water along is connected. Water cooling dehumidification functions by opening a cooling water supply electromagnetic valve 12d described later.

  The lower part of the air duct 30 (duct 32) is connected to the outlet 20d provided in the lower back part of the outer tub 20 by a bellows 31 having a flexible structure substantially horizontally.

  As shown in FIG. 3, the fan 41 is a so-called turbo fan or the like, and an impeller (not shown) composed of a plurality of blades is accommodated in a fan case 41a. A scroll-like (spiral) flow path (not shown) is formed around the periphery. Further, on the outer surface of the fan case 41a, an intake hole (not shown) for sucking air is formed on one surface side of the rotation center of the impeller, and an electric motor M1 for rotating the impeller at high speed is attached on the other surface side. ing.

  The heater 42 (see FIG. 2) is composed of a PTC (Positive Temperature Coefficient) heater or the like, and is provided on the downstream side of the scroll-like flow path in the fan case 41a. The fan case 41a on the downstream side of the heater 42 is formed with a discharge port (not shown) through which hot air (drying air) generated by the heater 42 is discharged.

  The duct 33 (see FIG. 2) includes a filter duct 33a. The front surface of the filter duct 33a has an opening, and the drawer-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 fan unit 40, and a hot air duct 35, a bellows 36, and a hot air blowing nozzle 37 are connected to an outlet (not shown) of the blower fan unit 40. Connected in order.

  The washing machine S1 includes a circulation pump P and circulation hoses H1 and H2, and has a function of circulating the stored water in the outer tub 20. The circulation pump P is disposed below the outer tub 20, its introduction port is connected to the bottom of the outer tub 20 via the circulation hose H1, and the outlet port is connected to the side of the outer tub cover 22 via the circulation hose H2. It is connected. Thereby, the water stored in the outer tub 20 is pumped up by the circulation pump P, and water is sprinkled on the upper part of the laundry in the outer tub 20.

  As shown in FIG. 4, at the rear of the tray 5 (see FIG. 1), a water supply unit 12 (water supply means) having five water supply electromagnetic valves T, a bath water supply pump U, a water supply path unit (not shown), and the like. ) Is provided. The five water supply electromagnetic valves T are a detergent water supply electromagnetic valve 12a, a finishing agent water supply electromagnetic valve 12b, an outer tank water supply electromagnetic valve 12c, a cooling water supply electromagnetic valve 12d, and a tank cleaning water supply electromagnetic valve 12e (water supply means). And.

  The detergent water supply solenoid valve 12a supplies tap water from the water supply hose connection port 7a to a detergent charging chamber (not shown) of the tray 5 (see FIG. 3) through a water supply path (not shown). The tap water poured into the detergent charging chamber is poured into the outer tub 20 through a charging hose (not shown) together with the charged detergent.

  The finishing agent water supply electromagnetic valve 12b supplies tap water from the water supply hose connection port 7a to a finishing agent charging chamber (not shown) of the tray 5 (see FIG. 3) through a water supply path (not shown). The tap water poured into the finishing agent charging chamber is poured into the outer tub 20 through a charging hose (not shown) together with the charged finishing agent.

  The outer tank water supply electromagnetic valve 12c supplies tap water from the water supply hose connection port 7a into the outer tank 20 through a water supply path (not shown) from a water injection hose (not shown).

  The cooling water supply electromagnetic valve 12d supplies tap water from the water supply hose connection port 7a to a water cooling / dehumidification mechanism (not shown) of the air duct 30 (see FIG. 2) through a water supply path (not shown).

  The tank cleaning water supply electromagnetic valve 12e passes the tap water from the water supply hose connection port 7a through a water supply path (not shown) and the outer tank cover side nozzle 50A (described later) through the cleaning water supply hose 55 (cleaning water supply piping). Water is supplied to the water channel member.

  In addition, the bath water from the water absorption hose connection port 7b pumped up by the bath water feed pump U is supplied into the outer tub 20 from a water injection hose (not shown) through a water supply path (not shown).

  As shown in FIG. 5, the five water supply solenoid valves T are arranged on the upper left side of the outer tub 20. FIG. 5 shows a state where only five water supply electromagnetic valves T are extracted from the water supply unit 12 (see FIG. 4).

  A branch joint 54 is connected to a discharge port (not shown) of the tank cleaning water supply electromagnetic valve 12e via a seal member (such as an O-ring) (not shown), and one end of a cleaning water supply hose 55 is connected to the tip of the branch joint 54. A drainage hose 56 (drainage pipe) is connected to the side surface (circumferential surface) of the branch joint 54.

  The cleaning water supply hose 55 extends forward along the outer tub main body 21, extends so as to be bent in the center in the left-right direction at the position of the outer tub cover 22, and is provided at the apex (center) of the outer tub cover 22. Further, it is connected to a water supply port 51f1 (see FIG. 8) described later via a seal member (not shown).

  The drain hose 56 extends downward from the branch joint 54 and extends while bending backward, and is connected to the outer tank water supply joint 24 provided at the rear portion of the outer surface of the outer tank 20 (outer tank main body 21). The outer tank water supply joint 24 is connected to a case communicating with a detergent charging chamber (not shown) and a finishing agent charging chamber (not shown) of the tray 5 via a bellows hose (not shown).

  As shown in FIG. 6, the outer tank water supply joint 24 is configured by assembling a joint 24 a connected to the outer tank body 21 and a joint 24 b connected to the bellows hose in an L shape in a side sectional view. Yes. A rubber check valve 24c is provided at the boundary between the flow path constituted by the joint 24a and the flow path constituted by the joint 24b. The check valve 24c only allows fluid to flow from the joint 24b-side flow path to the joint 24a-side flow path, and steam generated in the outer tub 20 during a drying process described later is generated in the joint. The flow from 24a to the joint 24b is blocked.

  The drain hose 56 is connected to the upper part of the joint 24a. The joint 24a is formed with a cylindrical hose connection portion 24a1 to which the drainage hose 56 is connected. A drain hole 24a2 communicating with the flow path inside the joint 24a is formed at the bottom of the hose connection portion 24a1. The drain hole 24a2 corresponds to an outlet to which a drain hose 56 (drain pipe) is connected. The size of the drain hole 24a2 will be described later.

  As shown in FIG. 7, the cleaning water supply hose 55 and the drainage hose 56 are located above the drainage hose 56 in the vertical direction (vertical direction). As a result, the residual water in the cleaning water supply hose 55 is discharged into the outer tub 20 through the drainage hose 56, thereby preventing the cleaning water supply hose 55 from being blocked by freezing of the residual water.

  That is, if the drain hose 56 is not provided, and the tank cleaning water supply electromagnetic valve 12e and the outer tank cover side nozzle 50A described later are directly connected via the cleaning water supply hose 55, the outer tank cover side When cleaning water is supplied from the nozzle 50A and the tank cleaning water supply solenoid valve 12e is closed, the flow of cleaning water in the outer tank cover side nozzle 50A and the cleaning water supply hose 55 stops, and the outer tank cover side nozzle 50A is scattered. Wash water is not discharged from the water port 50b2. Therefore, in the present embodiment, the drainage hose 56 is branched from the cleaning water supply hose 55, and the cleaning water supply hose 55 is disposed above the drainage hose 56 in the vertical direction. It is possible to prevent the cleaning water from remaining in the supply hose 55.

  As shown in FIG. 8, the outer tank cover 22 is provided with an outer tank cover side nozzle 50A for spraying tap water (cleaning water) for tank cleaning. The outer tank cover side nozzle 50 </ b> A is formed of a synthetic resin or the like, has a substantially arcuate shape (arc shape), and is provided in the upper part of the outer tank cover 22. The outer tank cover side nozzle 50A is formed with a length of about one quarter of the circumference, and extends from the center to the left and right with the same length. In addition, a water supply port 50f1 to which a cleaning water supply hose 55 (see FIG. 7) is connected is formed in the central portion of the outer tank cover side nozzle 50A in the circumferential direction, and penetrates the outer tank cover 22 so as to penetrate the outer tank cover. 22 protrudes outside. A seal member (not shown) such as an O-ring is provided at the boundary between the outer tub cover 22 and the water supply port 50f1 so that water does not leak.

  As shown in FIG. 9, the shape of the outer tank cover 22 to which the outer tank cover side nozzle 50 </ b> A is attached includes a large-diameter portion 22 b connected to the opening 21 s (FIG. 11) of the outer tank main body 21 (see 11), It has the inclination part 22c diameter-reduced toward this side (front) with respect to the large diameter part 22b, and the front-surface part 22d extended in a substantially perpendicular direction with respect to this inclination part 22c. Further, a convex portion 22e to which the packing 23 is attached is formed on the front surface portion 22d so as to protrude forward. The outer tank cover side nozzle 50 </ b> A is disposed at the front end of the large diameter portion 22 b of the outer tank cover 22.

  As shown in FIG. 10 (a), a plurality (15 in this embodiment) of water spray ports 50b2 are formed on the front surface 50d of the outer tank cover side nozzle 50A at intervals in the circumferential direction. Moreover, the hole diameter (diameter) of the water spout 50b2 is formed to be 1.2 mm, for example. Note that the number, position, and hole diameter of the water spout 50b2 are not limited to the present embodiment, and can be changed as appropriate.

  As shown in FIG. 10B and FIG. 10C, on the upper surface 50e of the outer tub cover-side nozzle 50A, a plurality of mounting portions 51A protrude rearward from the upper surface 50e at intervals in the circumferential direction. Is formed. The mounting portion 51A has a rectangular piece 51a, and is configured by forming a screw insertion hole 51b in the piece 51a. Each attachment portion 51A is formed so as to be flush with the upper surface 50e, and a screw (not shown) is inserted into the insertion hole 51b and is screwed to the inner wall surface 22b1 of the outer tank cover 22.

  As shown in FIG. 10D, a water spray port 50a2 is formed on the bottom surface 50f of the outer tank cover side nozzle 50A at a position corresponding to the water supply port 50f1. In the present embodiment, only one water spout 50a2 is provided, but it may be provided at a plurality of locations.

  In addition, the cross-sectional area (flow-path cross-sectional area) of the drain hole 24a2 is 1 with respect to the total cross-sectional area (total flow-path cross-sectional area) of 15 sprinkling ports 50a2 of the outer tank cover side nozzle 50A and one 50b2. It is preferable to set to 10%. By setting to such a ratio, the water draining function can be sufficiently exhibited. In addition, for the purpose of suppressing the flow rate on the outer tank cover side nozzle 50A side, the number and the hole diameter of the water spray ports 50a2 and 50b2 may be set to be larger than 10%.

  As shown in FIG. 11, the outer tank cover side nozzle 50 </ b> A is disposed between the outer tank cover 22 (outer tank 20) and the side surface (circumferential surface) of the inner tank 10. More specifically, the inner tank 10 has a throttle portion 10d having a reduced diameter at the front end, and the outer tank cover side nozzle 50A is positioned between the large diameter portion 22b of the outer tank cover 22 and the throttle portion 10d. doing. A balance ring 10b is attached to the inner peripheral edge of the throttle portion 10d.

  In the washing machine S1 provided with the outer tub cover side nozzle 50A in this manner, as shown by the solid line arrow R1 in FIG. 11, the washing water is discharged forward from the water spray port 50b2, and the inclined portion 22c of the outer tub cover 22 is It hits the inner wall surface 22c1 and flows downward along the inner wall surface 22c1.

  More specifically, the cleaning water discharged from the water spray port 50b2 is discharged linearly, hits the inner wall surface 22c1, and after hitting, spreads radially around the position. The washing water sprayed on the inner wall surface 22c1 flows down the inner wall surface 22c1 of the inclined portion 22c of the outer tub cover 22 and the inner wall surface 22d1 of the front surface portion 22d by the action of gravity.

  Moreover, the washing water discharged from the water spray port 50a2 hits the throttle portion 10d of the inner tank 10 as indicated by the solid line arrow R2. The washing water sprayed on the throttle part 10d is scattered on the inner wall surface 22b1 of the large diameter part 22b of the outer tank cover 22 (outer tank 20) by the centrifugal force when the inner tank 10 rotates, and is behind the throttle part 10d. The outer tank cover 22 and the outer tank 10 s are scattered on the outer peripheral surface 10 s of the inner tank 10. In addition, although there is one sprinkling port 50b2 sprayed to the inner tank 10 side, it is possible to spray the entire peripheral surface of the throttle portion 10d of the inner tank 10 by sprinkling water while rotating the inner tank 10. Become. In this way, the amount of water used can be reduced by blowing away tap water by centrifugal force and washing the inside of the outer tub cover 22 as compared with the case where the tap water is blown and washed.

  As shown in FIG. 12, when the cleaning water discharged from the respective water spouts 50b2 (see FIG. 10) of the outer tank cover side nozzle 50A to the front (inner wall surface 22b1) of the outer tank cover 22 is scattered radially, In the horizontal direction perpendicular to the vertical direction (gravity direction), the washing water from the adjacent water spouts 50b1 overlap each other. Thereby, when washing water flows down, the area where the washing water does not flow can be eliminated on the inner wall surfaces 22c1 and 22d1 of the outer tub cover 22, and dirt can be prevented from remaining in the form of vertical stripes. .

  In addition, the number, the hole diameter, and the position of the water spout 50b1 of the outer tank cover side nozzle 50A described above may be set so that the cleaning water flows over the entire inner surface of the outer tank cover 22, as described with reference to FIG. For example, the number, hole diameter, and position can be changed as appropriate.

  Next, operation | movement of washing machine S1 of this embodiment is demonstrated. First, the overall configuration of the washing machine S1 of the present embodiment will be briefly described. As shown in FIG. 13, the control device (microcomputer) 60 includes a CPU (Central Processing Unit), a ROM (Read Only Memory) storing a program, a RAM (Random Access Memory), an input / output circuit, and the like. The operation button input circuit 62 connected to the switches 4b and 4c, the water level sensor 63, the temperature sensor 64, and the vibration sensor 65 are connected to acquire various information signals in the user's button operation, washing process, and drying process. The temperature sensor 64 includes an outside temperature sensor that detects the outside temperature, a temperature sensor that detects the temperature of the drain port 20c, and the like.

  In addition, the control device 60 controls the water supply solenoid valves 12 a to 12 e, the bath water supply pump U, the drain valve V, the rotation speed of the motor M (the rotation speed of the inner tub 10), and the fan 41 through the drive circuits 66. The rotation speed and the energization (ON / OFF) of the heater 42 are controlled. 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 when the power switch 4a is pressed and the power is turned on, and executes, for example, a basic control processing program for washing and drying shown in FIGS. In the following, a case where a series of operations from washing to drying is performed will be described with reference to FIGS.

  As shown in FIG. 14, the control device 60 performs a washing process (step S100), a rinsing process (step S200), a tank washing process (step S300), a dehydration process (step S400), and a drying process (step S500) in this order. Is done.

  As shown in FIG. 17, in the cloth amount sensing step (S100-1) of the washing step (S100), the control device 60 rotates the inner tub 10 and calculates the amount of cloth for the clothes before water injection. Note that the weight of the clothes in the inner tub 10 can be calculated based on the rotation speed of the motor M and the current value. Since the load for rotating the inner tub 10 increases due to the increase in the weight of the clothing and a large amount of motor current is required to flow through the motor M, the weight of the clothing is calculated from the motor current and the rotation speed of the motor M. be able to. In addition, 25-45 rpm of the tank rotational speed shown in the table | surface of FIG. 17 is a rotational speed at the time of inner tank rotation (except the time of spin-drying | dehydration).

  In the detergent dissolving water supply step (S100-2), the control device 60 opens the detergent water supply electromagnetic valve 12a and supplies tap water to the detergent charging chamber (not shown) of the tray 5. The tap water poured into the tray 5 is poured into the outer tub 20 through the bellows hose (not shown) and the outer tub water supply joint 24 while dissolving the detergent. The controller 60 closes after a predetermined time has elapsed since the detergent water supply solenoid valve 12a was opened.

  In the rotary water supply step (S100-3), the control device 60 drives the circulation pump P while rotating the inner tub 10 while maintaining the opening of the detergent water supply electromagnetic valve 12a, thereby washing water (high concentration). The detergent solution is circulated and water is supplied to the clothes while spraying the washing water. Here, the inner tub 10 is rotated at a predetermined rotational speed. Moreover, the control apparatus 60 closes the detergent water supply solenoid valve 12a after completion | finish of rotation water supply.

  In the pre-washing step (S100-4), the control device 60 washes the clothes with a high concentration detergent solution.

  In the cloth quality sensing step (S100-5), the control device 60 calculates the weight of the clothing containing water. Then, the control device 60 determines the cloth quality (water absorption) of the clothes from the weight of the clothes calculated in the cloth amount sensing step (1) and the weight of the clothes including water calculated in the cloth quality sensing step (5). Determine. The following steps are executed according to the determined cloth quality of the clothing.

  In the replenishing water step (S100-6), the control device 60 adjusts the weight of the clothing calculated in the cloth amount sensing step (1) and the clothing quality of the clothing determined in the fabric quality sensing step (5). The water supply electromagnetic valve 12 c and the tank cleaning water supply electromagnetic valve 12 e are opened to supply water into the outer tank 20. For example, if it is a thing with high water absorption, such as towel cloth, wash water is replenished in a replenishment water process. In addition, after the end of water supply, the control device 60 closes the outer tank water supply electromagnetic valve 12c and the tank cleaning water supply electromagnetic valve 12e. In this replenishing water process, by opening the tank cleaning water supply electromagnetic valve 12e, the cleaning water is sprinkled from the outer tank cover side nozzle 50A, and the upper part of the outer tank cover 22 and the inner tank 10 of the inner tank 10 are washed in the previous washing process. The detergent component adhering to the front end side surface can be poured.

  In the main washing step (S100-7), the control device 60 washes the clothes while rotating the inner tub 10 in both forward and reverse directions. When the main washing is completed, the unbalanced state of the clothing is monitored to determine whether or not to shift to dehydration.

  In the rinsing process in step S200, one rinsing process and two rinsing processes are executed. That is, in the draining process (S200-1) of the rinse 1, the control device 60 opens the drain valve V and drains the washing water in the outer tub 20. The end of drainage is determined based on the detection value of the water level sensor.

  In the dehydration step (S200-2), after the drainage is completed, the control device 60 rotates the inner tub 10 at a high speed to dehydrate the wash water contained in the clothes. In addition, the rotational speed of the inner tank 10 at the time of dehydration is set to 1000 rpm, for example.

  In the rotary shower step (S200-3), the control device 60 closes the drain valve V, opens the outer tank water supply electromagnetic valve 12c, and supplies rinse water to the outer tank 20. Further, while the inner tub 10 is rotated, the circulation pump P is driven to spray the rinse water on the clothes in the inner tub 10.

  In the dehydration step (S200-4), the control device 60 stops the circulation pump P while rotating the inner tub 10 at a high speed to dehydrate the rinse water from the clothes.

  In the rotary shower step (S200-5), the control device 60 drives the circulation pump P again while rotating the inner tub 10, and sprays rinse water on the clothes in the inner tub 10.

  In the draining step of rinsing 2 (S200-6), the control device 60 stops the inner tank 10 and the circulation pump P, opens the drain valve V, and drains the rinsing water in the outer tank 20.

  In the dehydration step (S200-7), the control device 60 dehydrates water (rinse water) contained in the clothing by rotating the inner tub 10 at a high speed after the drainage is completed.

  In the water supply step (S200-8), the control device 60 closes the drain valve V, opens the tank cleaning water supply electromagnetic valve 12e, and supplies rinse water to the outer tank 20. The control device 60 closes the tank cleaning water supply electromagnetic valve 12e after the end of water supply. In the water supply process, the tank cleaning water supply electromagnetic valve 12e is opened to supply water, so that dirt attached to the upper part of the outer tank cover 22 and the like can be poured during the rinsing process.

  In the finishing agent water supply step (S200-9), the control device 60 opens the finishing agent water supply electromagnetic valve 12b and supplies the outer tub 20 with rinse water containing the finishing agent. The control device 60 closes the finishing agent water supply electromagnetic valve 12b after finishing the finishing agent water supply.

  In the rotary water supply / replenishment water process (S200-10), the control device 60 opens the outer tank water supply electromagnetic valve 12c and the tank cleaning water supply electromagnetic valve 12e to supply rinse water into the outer tank 20. In addition, when clothes with high water absorption are thrown in and water supply amount is insufficient, rinse water is replenished. In addition, the control device 60 rotates the inner tub 10 while rinsing water is accumulated in the outer tub 20 to rinse the clothes. In addition, the rotational speed of the inner tank 10 at this time is set to 35-45 rpm.

  Then, it progresses to a tank washing process (S300). That is, as shown in FIG. 15, in step S301, the control device 60 opens the detergent water supply electromagnetic valve 12a, the outer tank water supply electromagnetic valve 12c, and the tank cleaning water supply electromagnetic valve 12e, and cleans the cleaning water in the outer tank 20. (Tap water) is supplied.

  In step S302, the control device 60 determines whether or not the water supply amount has reached a predetermined amount. The predetermined amount is preferably an amount of 25% or more of the bottom surface height of the inner tank 10 or an amount of 7 liters or more, but here, the maximum water level that can be set during the rinsing process (for example, 11.5 Liter). Further, whether or not the water supply amount has reached a predetermined amount is determined based on the detection value of the water level sensor 63. In step S302, when it is determined that the water supply amount has not reached the predetermined amount (No), the control device 60 returns to step S301, continues water supply, and determines that the water supply amount has reached the predetermined amount. (Yes), the process proceeds to step S303.

  In step S303, the control device 60 rotates the inner tub 10 at a rotational speed higher than the rotational speed (for example, 25 rpm) during the washing process and lower than the rotational speed (for example, 1000 rpm) during the dehydration process. The rotation speed is set to 80 to 300 rpm, for example. However, the rotational speed is not particularly limited to the above range, and is not limited to the above range as long as the inside of the washing tub (the inner tub 10 and the outer tub 20) can be sufficiently cleaned. For example, the upper limit can be appropriately changed according to the maximum possible output (maximum load) of the motor M. Further, the lower limit can be appropriately changed according to the shape of the inner tub 10 (whether or not it is a shape in which water is easily rolled up). That is, when it is a shape which can easily wind up water, water can be sufficiently wound up even at a lower rotational speed.

  In step S303, the control device 60 rotates right at 100 rpm. The inner tub 10 rotates, and the wash water (tap water) stored at the bottom of the outer tub 20 is rolled up, so that the inner left tub region or the inner tub 10 of the outer tub 20 on the side where water is rolled up. The left half of the area is mainly cleaned. Washing water is sprayed from the through holes 10h formed on the side surface of the inner tub 10 to the side surface (circumferential surface) inside the outer tub 20 for cleaning.

  In step S303, the control device 60 drives the circulation pump P. Accordingly, the circulation hoses H1 and H2 are also cleaned with the cleaning water.

  Moreover, in step S303, the control apparatus 60 opens the tank washing water supply electromagnetic valve 12e. Thereby, the tap water supplied from the water supply hose connection port 7a is supplied to the outer tank cover side nozzle 50A via the tank cleaning water supply electromagnetic valve 12e and the cleaning water supply hose 55. Therefore, as described in FIG. 11, the cleaning water is discharged from the water spray port 50b2 of the outer tank cover side nozzle 50A toward the inner surface of the outer tank cover 22, and the outer surface (outer peripheral surface) of the inner tank 10 from the water spray port 50a2. The cleaning water is discharged toward the tip of). Thereby, the region located in the place which is the highest in the vertical direction in the washing tub (the inner tub 10 and the outer tub 20) and is difficult to wash by the water roll-up is sprayed by the water from the outer tub cover side nozzle 50A. It becomes possible to wash.

  Proceeding to step S304, the control device 60 determines whether or not a predetermined time has elapsed since the inner tank 10 was rotated to the right by a timer (not shown). The predetermined time is not particularly limited, and is set to 60 seconds, for example. In step S304, when it is determined that the predetermined time has not elapsed, the control device 60 returns to step S303, and when it is determined that the predetermined time has elapsed, the control device 60 proceeds to step S305.

  In step S305, the control device 60 rotates the inner tub 10 counterclockwise at 100 rpm. As a result, the cleaning water stored in the outer tub 20 is rolled up as in the case of the right rotation, and the right half area inside the outer tub 20 and the right half area of the inner tub 10 are mainly washed. . In this way, by rotating the inner tub 10 clockwise and counterclockwise, it is possible to prevent occurrence of bias in the area to be cleaned.

  In step S306, the control device 60 determines whether or not a predetermined time has elapsed since the inner tank 10 is rotated counterclockwise by a timer (not shown). The predetermined time is not particularly limited, and is set to 60 seconds, for example, as described above. In step S306, when it is determined that the predetermined time has not elapsed, the control device 60 returns to step S305, and when it is determined that the predetermined time has elapsed, the control device 60 proceeds to step S307.

  In step S307, the control device 60 stops the circulation pump P. The rotation of the inner tank 10 (left rotation, 100 rpm) is maintained as it is. And it progresses to the spin-drying | dehydration process shown in FIG.

  By executing the tank cleaning step in this manner, the entire dirt and dust in the washing tub (inner tub 10 and outer tub 20) are removed, and the adhesion of dirt and trash is suppressed during the next operation. Can do.

  As shown in FIG. 16, in step S <b> 401, the control device 60 opens the discharge valve V while maintaining the rotation of the inner tank 10. Thereby, the used washing water in the outer tank 20 used in the tank washing process is discharged out of the machine through the drainage hose 8.

  In step S402, the control device 60 determines whether or not the drainage is completed. Whether or not the drainage is completed can be determined based on the detection value of the water level sensor 63. In step S402, when it is determined that drainage is not completed (No), the control device 60 repeats step S402, and when it is determined that drainage is completed (Yes), the process proceeds to step S403.

  In step S403, the control device 60 proceeds to the final dehydration step. That is, the control device 60 raises the inner tank 10 rotating at the rotation speed for tank cleaning to a rotation speed (for example, 1000 rpm) corresponding to dehydration. After performing the final dehydration process for a predetermined time, the drain valve V is closed and the process proceeds to the drying process (S500).

  Thus, when shifting from the tank cleaning process (S300) to the dehydration process (S400), the operation time can be shortened by shifting to the dehydration process while maintaining the rotation of the inner tank 10. That is, if the rotation of the inner tub 10 is stopped before the dehydration step, it is necessary to increase the rotation speed while balancing the inner tub 10 when starting the dehydration step. It will take some time to increase in speed. By preventing the rotation of the inner tank 10 from being stopped in the tank cleaning step as in the present embodiment, the above-described balancing time can be omitted, and the operation time can be shortened.

  In the drying step (S500), the control device 60 opens the cooling water supply electromagnetic valve 12d, energizes the heater 42, and drives the fan 41. Thereby, the steam generated from the clothing is removed (dehumidified) by a water-cooled dehumidifying member (not shown), heated by the heater 42, and then returned to the inner tub 10 as dry air.

  In the drying step, the tank may be washed to remove dust adhering in the drying operation. In addition, the process which confirms that there is no clothing remaining in the inner tank 10 is performed. For example, the user can open the door 2, take out clothes, close the door 2, and press a predetermined button (for example, a start button) to start the tank cleaning process. Incidentally, since no clothes are put in, the inner tub 10 can be rotated at a high speed, can be rotated with a small amount of water, and water saving performance can be enhanced.

  Also, as shown in FIGS. 18 and 19, in the tank cleaning step (S300), after the rinsing step 2 is completed, the rinsing water containing the finishing agent is once drained, dehydrated, and supplied to the tank. A cleaning shower (cleaning by the outer tank cover side nozzle 50A and cleaning by rotation of the inner tank 10) may be executed.

  That is, after the rotation water supply / replenishment water process (S200-10) of the rinse 2 is completed, the control device 60 opens the drain valve V to drain the rinse water in step S311. In step S312, the control device 60 rotates the inner tub 10 at a rotation speed corresponding to dehydration (or a rotation speed lower than the dehydration rotation speed). After completion of the dehydration, in step S313, the control device 60 opens the detergent water supply electromagnetic valve 12a, the outer tank water supply electromagnetic valve 12c, and the tank cleaning water supply electromagnetic valve 12e, and stores the cleaning water in the outer tank 20. Thereby, in the outer tank 20, it becomes possible to perform tank washing | cleaning with water cleaner than the rinse water used by the rinse 2. FIG. And when the amount of water supply reaches a predetermined amount (S314, Yes), the inner tank 10 is rotated clockwise or counterclockwise, and the tank is washed by water hoisting (S315 to S319).

  Further, in the control described with reference to the flow of FIG. 15 and FIG. 18, the configuration in which the inner tub 10 is rotated after water supply is completed has been described as an example, but is not limited to this order. As shown in FIG. 20, the structure which supplies water after rotating the inner tank 10 previously may be sufficient.

  That is, in step S321 shown in FIG. 20, the control device 60 opens the drain valve V. Thereby, the rinse water in the process of the rinse 2 is discharged | emitted via the drainage hose 8. FIG.

  In step S322, the control device 60 starts the rotation of the inner tank 10 and determines whether or not the rotation speed of the inner tank 10 is equal to or higher than a predetermined value while balancing. The predetermined value is set to a rotational speed higher than the rotational speed during the washing step and lower than the rotational speed during the dehydration step, for example, 200 to 900 rpm, preferably 200 to 300 rpm. Note that this rotational speed can be appropriately changed as described above.

  In step S323, the control device 60 closes the drain valve V, and in step S324, while maintaining the rotational speed of the inner tank 10, the detergent water supply electromagnetic valve 12a, the outer tank water supply electromagnetic valve 12c, and the tank cleaning water supply electromagnetic valve 12e is opened and water supply is started. Thereby, the washing water stored in the outer tub 20 is increased, and the washing is performed while the washing water is rolled up by the rotation of the inner tub 10.

  Moreover, in step S324, the control apparatus 60 opens the tank washing water supply electromagnetic valve 12e, and performs tank washing by the outer tank cover side nozzle 50A. Alternatively, the circulation pump P may be driven to clean the inside of the circulation hoses H1 and H2. As a result, the circulation hoses H1 and H2 can also be cleaned.

  In step S325, the control device 60 determines whether a predetermined time has elapsed by using a timer (not shown). The predetermined time is not particularly limited, but is set to 30 seconds to 1 minute, for example. When it is determined that the predetermined time has not elapsed (S325, No), the control device 60 repeats Step S325, and when it is determined that the predetermined time has elapsed (S325, Yes), the control device 60 proceeds to Step S326. Then, the tank cleaning water supply electromagnetic valve 12e is closed.

  In this way, in the tank cleaning step (S300), the inner tank 10 stops the water from splashing on the laundry in the inner tank 10 by supplying the cleaning water while rotating the inner tank 10. It becomes possible to suppress rather than supplying water in a state. In addition, the inner tub 10 can be easily rotated at a higher speed than when the inner tub 10 is rotated after water is accumulated, and the water can be rolled up with a small amount of water. In addition, since the inner tank 10 can be rotated at a high speed, as described above, it is not necessary to rotate the inner tank 10 to the left after the inner tank 10 is rotated in order to prevent the bias of the cleaning region, and only to rotate in one direction. It is possible to prevent the bias of the cleaning region only by performing the cleaning.

  As explained above, in the washing machine S1 of the first embodiment, the outer tub cover 22 (outer tub 20) and the squeezed portion 10d of the inner tub 10 (inner tub) in the upper part of the outer tub cover 22 (outer tub 20). Since the cleaning water supplied from the tank cleaning water supply electromagnetic valve 12e (water supply means) is provided with the outer tank cover side nozzle 50A (water channel member) via the cleaning water supply hose 55. The dirt and dust attached to the inner surface of the outer tub cover 22 and the front surface of the inner tub 10 can be removed, and the washing tub (the inner tub 10 and the outer tub 20) can be removed by washing before the dirt and trash are accumulated. It becomes possible to keep it clean. By suppressing the adhesion of dirt and dust in this way, it is possible to suppress the growth of mold and the generation of off-flavors. Furthermore, it is possible to prevent or suppress dust from adhering to the laundry being washed.

  Further, in the first embodiment, the drainage hose 56 is branched and connected to the cleaning water supply hose 55, and the cleaning water supply hose 55 is arranged so as to be positioned above the drainage hose 56 in the vertical direction. It is possible to prevent the cleaning water from remaining in the cleaning water supply hose 55. Thereby, it is possible to prevent the washing water supply hose 55 from being blocked by freezing of the residual water, and it is possible to prevent the malfunction of the washing machine S1 caused by the blocking.

  Moreover, in 1st Embodiment, the drainage hose is because the cross-sectional area of the drainage hole 24a2 of the exit to which the drainage hose 56 is connected is set to 10% or more of the total cross-sectional area of the water spray ports 50a2 and 50b2. The drainage function can be sufficiently exerted while preventing the washing water from flowing unnecessarily to the 56 side.

  In the first embodiment, since the branch portion between the cleaning water supply hose 55 and the drainage hose 56 is located in the vicinity of the tank cleaning water supply electromagnetic valve 12e, the cleaning water remaining in the cleaning water supply hose 55 is provided. Can be reduced as much as possible.

  In the first embodiment, since the dedicated tank cleaning water supply electromagnetic valve 12e is provided, the function during tank cleaning is not impaired. The cleaning water supply hose 55 is not limited to the configuration connected to the dedicated tank cleaning water supply electromagnetic valve 12e, but may be configured to branch by providing a switching valve downstream of another water supply electromagnetic valve. .

  Moreover, in 1st Embodiment, the control apparatus 60 which controls the motor M and the tank cleaning water supply electromagnetic valve 12e is provided, and the control apparatus 60 is the tank cleaning water supply electromagnetic valve 12e so that a predetermined amount of tap water may accumulate in the outer tank 20. Since the motor M is controlled so as to rotate the inner tub 10 at a rotational speed higher than the rotational speed at the time of the washing process, the outer tub 20 is not only washed by the outer tub cover side nozzle 50A. It becomes possible to perform washing of the tank by winding up the washing water stored in the washing tank, and it is possible to wash the entire inside of the washing tub (the inner tub 10 and the outer tub 20).

(Second Embodiment)
As shown in FIG. 21, the washing machine (drum-type washing machine) S2 according to the second embodiment has an inner tub 10A having a smaller diameter (outer diameter) than that of the first embodiment, and is not illustrated. The width of the shell (corresponding to the casing 1 in the first embodiment) is configured to be compact. The basic configuration and operation control of the washing machine S2 are the same as those in the first embodiment, and the configuration of the tank cleaning nozzle is different.

  The washing machine S2 includes an inner tub 10A and an outer tub 20A, and the rotation center of the inner tub 10A is higher on the near side, and the inner tub 10A and the outer tub 20A are inclined. The outer tub 20A is configured by combining an outer tub body 21A and an outer tub cover 22A. The outer tub cover 22A is configured integrally with the outer tub cover 22A so that a wide warm air blowing nozzle 22f for blowing warm air to the laundry in the inner tub 10A at the time of the drying process is positioned obliquely on the right side. ing.

  Further, on the outer peripheral side of the outer tub 20, a cleaning water supply hose 57 is arranged extending from the upper part to the right side part. One end of the washing water supply hose 57 is connected to a substantially T-shaped branch joint 25 provided at the upper part of the outer tub 20A. The other end of the cleaning water supply hose 57 is connected to a substantially L-shaped joint 26 provided on the side of the outer tub 20A.

  One of the branch joints 25 is connected to a first nozzle 50C (see FIG. 22) described later, and the other is connected to the tank cleaning water supply electromagnetic valve 12e and the cleaning water supply hose 58 (cleaning water) of the water supply unit 12 (water supply means) described above. Connected via a supply pipe). The other end of the joint 26 is connected to a second nozzle 50D (see FIG. 22) described later.

  As shown in FIG. 22, a first nozzle 50C (first water channel member) and a second nozzle 50D (second water channel member) are provided on the inner surface of the outer tub cover 22A. The first nozzle 50C is provided in the upper part of the outer tank cover 22A, and the second nozzle 50D is provided in a side portion of the outer tank cover 22A that is lower in the vertical direction than the first nozzle 50C. Further, the first nozzle 50C and the second nozzle 50D are disposed in a groove 22g formed on the inner surface of the outer tank cover 22A. The groove 22g extends in the circumferential direction across the hot air blowing nozzle 22f, and is formed in a substantially C shape in a plan view of FIG.

  The first nozzle 50C is disposed in the groove 22g1 located on the upper side in the vertical direction (vertical direction) than the hot air blowing nozzle 22f. The second nozzle 50D is disposed in the groove 22g2 located on the lower side in the vertical direction than the hot air blowing nozzle 22f.

  As shown in FIG. 23 (a), the first nozzle 50C is made of synthetic resin or the like so as to have a hollow portion therein and extend in an arc shape. The first nozzle 50C has five sprinkling ports 50b5 formed at substantially equal intervals on an arcuate back surface (surface facing the inner tank 10A) 50i. Further, the first nozzle 50C has a plurality of attachment portions 51C formed at the lower edge portion of the back surface 50i at intervals in the longitudinal direction downward. The mounting portion 51C is formed with a U-shaped notch for screw insertion.

  As shown in FIGS. 23B and 23C, the first nozzle 50C has a water supply port 50k1 that is an inlet to which cleaning water (tap water) is supplied. The first nozzle 50C has a flat shape in the front-rear direction, and is configured such that a cylindrical water supply port 50k1 slightly protrudes forward and partly upward with respect to the front surface 51j.

  As shown in FIG. 23 (d), five sprinkling ports 50b6 are formed at substantially equal intervals on the front surface 51j of the first nozzle 50C. In addition, the water spray port 50b6 located in the center of the longitudinal direction is formed in the cylindrical part of the water supply port 50k1.

  As shown in FIG. 24A, the second nozzle 50D is made of synthetic resin or the like and has a hollow portion inside, and is configured to be elongated in a substantially straight line in the vertical direction (vertical direction). Further, a sprinkling port 50b7 is formed on the back surface 50m of the second nozzle 50D, and a substantially cylindrical water supply port 50p is formed on the right side surface 50n. Further, a mounting portion 51D is formed to protrude sideways on the side edge of the back surface 50m of the second nozzle 50D, and a mounting portion 51D is formed to protrude downward on the lower edge.

  As shown in FIG. 24B, the second nozzle 50D has a water spout 50b8 formed at the lower end of the right side surface 50n. Further, the water supply port 50p of the second nozzle 50D is formed so that a half of the cylindrical portion protrudes from the front surface 50o. Further, on the right side surface 50n, protrusions 50n1 and 50n1 are formed on the upper and lower sides of the water supply port 50p. When the second nozzle 50D is mounted in the groove 22g2, the protrusion 50n1 forms a gap through which cleaning water flows between the side wall 22g3 (see FIG. 26) of the groove 22g2 and the right side surface 50n of the second nozzle 50D. It has come to be.

  As shown in FIG. 24C, the second nozzle 50D has a water spout 50b9 formed on the upper surface 50r.

  As shown in FIG. 24 (d), the second nozzle 50D is formed with water spray ports 50b10 and 50b10 vertically on the front surface 50o with the water supply port 50p interposed therebetween.

  As shown in FIG. 25, the first nozzle 50C is fixed to a screw boss B1 formed on the outer tub cover 22A using a screw N via a mounting portion 51C. Wash water (tap water) supplied from the branch joint 25 is introduced into the first nozzle 50C and discharged from the water spout 50b2 as indicated by an arrow R3. The discharged cleaning water hits the bottom surface 22i of the groove 22g1 of the outer tub cover 22A, flows downward along the bottom surface 22i by the action of gravity, and is further formed from the bottom surface 22i toward the opening 20b of the outer tub 20A. It flows down along the surface 22j.

  Further, as indicated by an arrow R4, the cleaning water discharged from the water spray port 50b6 of the first nozzle 50C hits the front surface 10f1 of the balance ring 10f, and a part of the cleaning water flows downward along the front surface 10f1 and is cleaned. Another part of the water is blown off toward the inner surface 22h1 of the large-diameter portion 22h of the outer tank cover 22A by the centrifugal force generated by the rotation of the inner tank 10A. In this case, it is scattered in the right direction by the right rotation of the inner tank 10A, and is scattered in the left direction by the left rotation of the inner tank 10A. Thereby, the inner surface above the first nozzle 50C of the outer tub cover 22A is cleaned. Thus, the amount of water used can be reduced by utilizing the centrifugal force as in the first embodiment.

  As shown in FIG. 26, the second nozzle 50D is fixed to a screw boss B2 formed on the outer tub cover 22A using a screw N via a mounting portion 51D. The washing water supplied to the second nozzle 50D is discharged upward from a water spout 50b9 (see FIG. 24C) formed in the upper surface 50r, as indicated by an arrow R5, and is connected to the hot air blowing nozzle 22f and the second nozzle 50f. It scatters in the groove 22g2 between the nozzle 50D. Incidentally, the region of the boundary between the groove 22g2 and the hot air blowing nozzle 22f is formed with the hot air blowing nozzle 22f that is one step higher than the installation surface of the second nozzle 50D, and thus the washing water that flows down from the first nozzle 50C. Then, the washing water does not flow into this region. Therefore, in the present embodiment, not only the first nozzle 50C but also the second nozzle 50D can be provided to cover an area that cannot be cleaned by the first nozzle 50C.

  Further, the washing water supplied to the second nozzle 50D is discharged to the right side from a water spray port 50b8 (see FIG. 24B) formed on the right side surface 50n of the second nozzle 50D, as indicated by an arrow R6. , It flows down along the side wall 22g3 of the groove 22g2.

  As shown in FIG. 27, the wash water supplied to the second nozzle 50D is discharged forward from the sprinkling ports 50b10 and 50b10 formed on the front surface 50o of the second nozzle 50D as indicated by an arrow R7, and the groove 22g2. The front surface 22g4 of the groove portion 22g2 is washed by hitting the front surface (bottom surface) 22g4 and flowing down along the front surface 22g4 by the action of gravity.

  Further, as shown by an arrow R8, the cleaning water supplied to the second nozzle 50D is discharged rearward from a water spout 50b7 formed in the upper part of the back surface 50m, and hits the front surface 10f1 of the balance ring 10f. Since the balance ring 10f is rotating, the cleaning water discharged from the water spout 50b7 is sprinkled on the entire front surface 10f1 of the balance ring 10f.

  As shown in FIG. 28, the wash water discharged from the water spout 50b7 to the balance ring 10f is scattered on the inner surface 22h2 of the outer tub cover 22A by the centrifugal force when the balance ring 10f is rotated, as indicated by an arrow R9. .

  In addition, in washing machine S2 which concerns on 2nd Embodiment, a tank washing | cleaning process can be implemented by the control (FIGS. 14 thru | or 20) similar to 1st Embodiment.

  As described above, in the washing machine S2 according to the second embodiment, in the upper part of the outer tub cover 22A (outer tub 20A), the outer tub cover 22A (outer tub 20A) and the front surface 10f1 (inner tub 10A) of the balance ring 10f. Since the first nozzle 50C is provided between the outer tank cover 22A and the front of the outer tank cover 22A (the outer tank 20A side) and the front surface 10f1 of the balance ring 10f (the inner tank 10A side). Even if it is not possible to secure a space for disposing the nozzle (water channel member) between the outer tank cover 22A (outer tank 20A) and the front end side surface (circumferential surface) of the inner tank 10A, the tank is washed. Is possible. Thereby, dirt and dust adhering to the inner surface of the outer tank cover 22A and the front surface of the inner tank 10A can be removed, and adhesion of dirt and dust can be suppressed. By suppressing the adhesion of dirt and dust in this way, it is possible to suppress the growth of mold and the generation of off-flavors. Furthermore, it is possible to prevent or suppress dust from adhering to the laundry being washed.

  In the second embodiment, since the second nozzle 50D is disposed between the outer tank cover 22A (outer tank 20A) and the front surface 10f1 of the balance ring 10f (front surface of the inner tank 10A), water is sprayed from the first nozzle 50C. Another member such as the hot air blowing nozzle 22f is provided at a position where the flow of the washing water to be hindered, and it is possible to perform cleaning including a step portion located below the hot air blowing nozzle 22f. Become.

  Further, according to the second embodiment, the first nozzle 50C and the second nozzle 50D are branched and connected on the downstream side of the tank cleaning water supply electromagnetic valve 12e, but the cleaning water supply hose 58 is connected to the tank cleaning water supply electromagnetic valve. Since the valve 12e is arranged above the valve 12e in the vertical direction, a drain hose (not shown) is branched from the washing water supply hose 58 in the same manner as in the first embodiment, and the washing water supply hose 58 is watered. By disposing the drain hose (not shown) in the vertical direction, it is possible to prevent the cleaning water from remaining in the cleaning water supply hose 58.

  Further, similarly to the first embodiment, the water supply unit 12 (water supply means) includes a dedicated tank cleaning water supply electromagnetic valve 12e connected to the cleaning water supply hose 55, so that the pressure and flow rate of cleaning water during tank cleaning can be adjusted. It can be secured sufficiently.

  Moreover, in 2nd Embodiment, the control apparatus 60 which controls the motor M and the water supply unit 12 is provided similarly to 1st Embodiment, and predetermined amount of tap water accumulates in the outer tub 20A by control of the control apparatus 60. The water supply unit 12 (the tank cleaning water supply electromagnetic valve 12e) is controlled, and the motor M is controlled so that the inner tank 10A rotates at a higher rotational speed (80 to 500) than the rotational speed (30 to 60 rpm) during the washing process. To do. Accordingly, the cleaning can be performed not only by the cleaning by the first nozzle 50C and the second nozzle 50D but also by the raising of the cleaning water accumulated in the outer tank 20A, so that the inside of the outer tank 20A can be cleaned over a wider range. It becomes possible.

  In the above-described embodiment, the first nozzle 50C is configured in an arc shape. However, the first nozzle 50C is not limited to an arc shape, and may be configured in a linear shape. Moreover, about the arrangement | positioning of the sprinkling port 50b5 of the 1st nozzle 50C, and the arrangement | positioning of the sprinkling port 50b6, the case where it arrange | positions left-right symmetrically is mentioned as an example, description is not limited to left-right symmetry, Also good.

  29 thru | or 31 shows the modification of washing machine S1 of 1st Embodiment, and provides the outer tub main body side nozzle 50B in the outer tub 20. FIG. This configuration can be applied, for example, when the tank cleaning cannot be performed sufficiently by the tank cleaning by the outer tank cover side nozzle 50A and the tank cleaning by water hoisting.

  FIG. 29 is a plan view showing the arrangement of the outer tank side nozzles. FIG. 30 shows a single unit of the outer tank side nozzle, where (a) is a front view and (b) is a rear view. FIG. 31 is a cross-sectional view showing the flow of water from the outer tank side nozzle. FIG. 29 shows a state where the outer tub cover 22 is removed and the inside of the outer tub main body 21 is viewed from the front side (front side).

  As shown in FIG. 29, the outer tank main body side nozzle 50B which sprinkles tap water for tank washing | cleaning is provided in the bottom face (surface on the back side) 21a of the outer tank main body 21 (outer tank 20). The outer tub main body side nozzle 50B has a substantially arcuate shape (arc shape), and in the circumferential direction above the bottom surface 21a (back surface) of the outer tub main body 21, in other words, the inner tub 10 (see FIG. 31). ) Are arranged along the circumferential direction. Moreover, the outer tank main body side nozzle 50B is formed in the length of about 1/4 of the circumference, and is arrange | positioned so that it may extend by the same length from the center to right and left. In addition, the shape of the outer tank main body side nozzle 50B is not limited to what is comprised by planar view arch form, You may be comprised by linear form.

  As shown to Fig.30 (a), the water sprinkles 50b3 and 50b3 are formed in the front (side) 50g of the outer tank main body side nozzle 50B. Further, the outer tub main body side nozzle 50B has mounting portions 51B formed on its upper and lower surfaces alternately spaced in the circumferential direction. The mounting portion 51B has a rectangular piece 51a, and is configured by forming a screw insertion hole 51b in the piece 51a.

  As shown in FIG. 30 (b), a plurality (nine in this embodiment) of water spray ports 50b4 are formed at intervals in the circumferential direction on the back surface (side surface) 50h of the outer tank main body side nozzle 50B. . Further, the mounting portion 51B of the outer tank main body side nozzle 50B is formed flush with the back surface 50h. Moreover, the rib 50h2 which protrudes in the back side (back) is formed in the back surface 50h between the adjacent sprinkling ports 50b4. When the rib 50h2 is installed on the bottom surface 21a of the outer tub main body 21, the cleaning water discharged from the water spout 50b4 is removed from the outer tub main body side nozzle 50B and the bottom surface 21a of the outer tub main body 21. The distance is set such that it can be scattered above and below the tank body side nozzle 50B.

  As shown in FIG. 31, washing water is discharged from the water spray port 50b4 of the outer tub main body side nozzle 50B toward the bottom surface 21a in the outer tub 20 (outer tub main body 21) as indicated by the solid line arrow. The washing water that hits the bottom surface 21a flows down along the bottom surface 21a due to the action of gravity. Although not shown, in this case as well, as described with reference to FIG. 12, each water spout 50 b 4 has its spray water sprayed from the adjacent water spout 50 b 4 so that the splash areas overlap each other in the horizontal direction. It is assumed that the number and arrangement of the water spouts 50b4 are set.

  Further, water is sprayed from the sprinkling ports 50b3, 50b3 (see FIG. 30) of the outer tank body side nozzle 50B toward the bottom plate 10g made of synthetic resin provided in the inner tank 10, as indicated by broken line arrows. The washing water sprayed on the bottom plate 10 g is sprayed on the entire outer peripheral surface of the bottom plate 10 g by the centrifugal force generated by the rotation of the inner tank 10.

  In addition, this invention is not limited to above-described embodiment, The shape of the outer tank cover side nozzle 50A, the 1st nozzle 50C, and the outer tank main body side nozzle 50B is not limited to circular arc shape, It is linear. It may be a shape. Moreover, each arrangement | positioning of the water spray ports 50a2 and 50b2 of the outer tank cover side nozzle 50A, the water spray ports 50b5 and 50b6 of the 1st nozzle 50C, and the water spray port 50b4 of the outer tank main body side nozzle 50B is not limited to left-right symmetry. . The number of water spray ports 50a2 and 50b2 of the outer tank cover side nozzle 50A, the water spray ports 50b5 and 50b6 of the first nozzle 50C, and the water spray ports 50b4 of the outer tank main body side nozzle 50B can be changed as appropriate.

1 Housing 10, 10A Inner tank 10d Restriction part (front end side surface)
12 Water supply unit (water supply means)
12e Tank cleaning water supply solenoid valve (water supply means)
20, 20A Outer tank 21, 21A Outer tank body 22, 22A Outer tank cover 24a2 Drain hole (outlet)
50A outer tank cover side nozzle (water channel member)
50B outer tank main body side nozzle 50C first nozzle (first water channel member)
50D second nozzle (second waterway member)
50a1, 50b2, 50b5 to 50b10 Water spout 54 Branch joint (branch part)
55,58 Wash water supply hose (wash water supply pipe)
56 Drain hose (drain pipe)
60 Control device M Motor (drive device)
S1, S2 Drum-type washing machine

Claims (1)

Anti-vibration support in the housing, and an outer tub that stores washing water inside,
An inner tub enclosed in the outer tub and containing laundry;
A driving device for rotationally driving the inner tank;
Water supply means for supplying water to the outer tub ,
In the drum-type washing machine in which the rotation center of the inner tub is inclined so that the opening side is higher ,
The outer tub has an outer tub cover at the opening of the outer tub main body and its front surface,
Supplying the cleaning water supplied from the water supply means to the water channel member provided in the upper part of the outer tank cover through the cleaning water supply pipe,
A drum-type washing machine having a water spout for sprinkling water on the outer peripheral surface of the inner tub on the bottom surface of the water channel member.

Images