JP2014210007A - Washing machine - Google Patents

Abstract

An object of the present invention is to provide a washing machine that prevents the formation of a detergent film in a filter of a filtration device provided in a circulation path of washing water. A washing machine (washing and drying machine 1) according to the present invention includes a housing 2, an outer tub 9 that is supported in a vibration-proof manner in the housing 2, and stores washing water therein. The inner tub (washing / dehydration tub 8) in which the laundry is accommodated, the drive device 10 for rotationally driving the inner tub, and the washing water in the outer tub 9 are extracted once and then again A first circulation path (lower communication pipe 13, washing water circulation water path 18) returning into the outer tub 9, a circulation pump 17 provided on the first circulation path, and the first circulation path upstream of the circulation pump 17. And a second circulation path (pipe 37) for returning washing water from the circulation pump 17 to the filtration device 16. [Selection] Figure 2

Description

  The present invention relates to a washing machine having a filtration device in a circulation path of washing water.

2. Description of the Related Art Conventionally, there is known a drum type laundry dryer having a circulation path for returning washing water once extracted from a water tank to the water tank (see, for example, Patent Document 1). This circulation path includes a first path for spraying the wash water extracted from the bottom of the water tank from the top of the water tank toward the inside of the water tank, and a second path for returning the wash water extracted from the bottom of the water tank to the bottom of the water tank again. And is mainly composed. In addition, the circulation path further includes a circulation pump that switches the flow of the washing water to one of the first and second paths. When the washing water is sprinkled from the upper part of the water tank through such a first path, the foaming of the detergent is promoted and the washing performance is improved by applying the washing water to the laundry. In addition, when the washing water is returned to the bottom of the water tank via the second path, the washing performance of the laundry is improved by promoting the dissolution of the detergent that easily collects at the bottom of the water tank.
By the way, in many conventional washing machines, a filtration device including a filter that collects dust such as lint is disposed in the circulation path of the washing water. In such a washing machine, lint and the like contained in the washing water returned to the water tub are removed by the filtration device.

JP 2008-113982 A

  However, in the conventional washing machine, when washing water is circulated as described above, a detergent film may be formed on the filter of the filtration device. This detergent film is formed by adhering a powdered detergent or a liquid detergent having a high concentration to the filter. In particular, this detergent film is easily formed on the mesh filter, and the mesh filter on which this detergent film is formed has a problem of being easily clogged. In addition, the detergent film formed on the filter also has a problem that it is difficult to remove only with the water flow of the washing water circulating through the water tank.

  Then, the subject of this invention is providing the washing machine which prevents formation of a detergent film | membrane of the filter of the filtration apparatus provided in the circulation path of washing water.

  The washing machine of the present invention includes a housing, an anti-vibration support in the housing, an internal tub that stores washing water therein, and an inner tub that is rotatably supported in the outer tub and stores laundry. A drive device that rotationally drives the inner tub, a first circulation path that once drains the washing water in the outer tub and returns it to the outer tub, and a circulation pump provided on the first circulation path; A filtration device provided on the first circulation path on the upstream side of the circulation pump, and a second circulation path for returning the washing water from the circulation pump to the filtration device.

ADVANTAGE OF THE INVENTION According to this invention, the washing machine which prevents formation of a detergent film | membrane of the filter of the filtration apparatus provided in the circulation path of washing water can be provided.

1 is an external perspective view of a washing machine (washing / drying machine) according to an embodiment of the present invention. It is the schematic which shows the inside of the housing | casing of the washing machine (washing / drying machine) which concerns on embodiment of this invention. It is a disassembled perspective view which shows the housing | casing inside of the washing machine (washing / drying machine) which concerns on embodiment of this invention. It is an expansion perspective view which shows the water supply unit of the washing machine (washing / drying machine) which concerns on embodiment of this invention. It is an expansion perspective view which shows the circulation pump unit of the washing machine (washing / drying machine) which concerns on embodiment of this invention. It is a top view of the circulation pump unit seen from the VI direction of FIG. It is an expansion disassembled perspective view which shows a mode that the circulation pump motor was removed from the circulation pump unit shown in FIG. It is an expansion disassembled perspective view which shows a mode that the filter part was removed from the circulation pump unit shown in FIG. FIG. 6 is a partially cutaway enlarged perspective view showing a state in which the filter case of the circulation pump unit shown in FIG. 5 is partially cut away. It is process drawing explaining the driving | operation process of the washing machine (washing / drying machine) which concerns on embodiment of this invention. It is a flowchart of the detergent melt | dissolution process of the washing machine (washing dryer) which concerns on embodiment of this invention.

Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
The washing machine of the present embodiment is provided on the first circulation path provided on the first circulation path provided on the first circulation path for once withdrawing the washing water in the outer tank and returning it to the outer tank again. And a second circulation path for returning the washing water to the filtration device. Below, after explaining the whole structure of the washing machine which can perform the process from washing to drying (henceforth a drying dryer), the circulation with which the circulation pump, the filtration apparatus, and the 2nd circulation path were united. An operation process including a “detergent dissolving process” in the pump unit and the filtration device executed by the washing / drying machine will be described. In the following description, the front-rear, left-right, upper-lower directions are based on the front-rear, left-right, upper-lower directions shown in FIG.

<Washing dryer>
FIG. 1 is an external perspective view of a washing machine (washing / drying machine) according to an embodiment of the present invention.
As shown in FIG. 1, the washing / drying machine 1 is a vertical washing / drying machine in which the rotation axis of the washing and dewatering tub 8 (inner tub, see FIG. 2) is substantially vertical. An upper surface cover 2a is provided on the upper portion of the casing 2 of the washing / drying machine 1, and an outer lid 3 is provided on the upper surface cover 2a. The outer lid 3 is bent in a mountain shape and opened to the rear side to open the opening 2b (see FIG. 2) so that clothes and the like (laundry) can be taken in and out of the washing and dewatering tub 8 (see FIG. 2). It has become.

  A water supply hose connection port 4 from the water tap and a water absorption hose connection port 5 for remaining hot water in the bath are provided on the rear side of the top cover 2a. A power switch 6 is provided on the front side of the top cover 2a, and an operation panel 7 including an operation switch 7a and a display 7b is provided on the front side of the outer lid 3.

  As shown in FIG. 2, the washing / drying machine 1 includes a washing / dehydrating tub 8, an outer tub 9, a driving device 10, a detergent / finishing agent charging device 11, a water supply unit 12A, a drying duct 20 and the like in a housing 2. It has.

  The washing and dewatering tub 8 has a bottomed cylindrical shape and includes a body plate 8a formed of a stainless steel plate or the like. A large number of through-holes (see FIG. 2, only a part of which is shown) 8 a 1 are formed in the body plate 8 a for water flow and ventilation. The washing and dewatering tub 8 includes a rotary blade 8b on the inner bottom surface.

  The outer tub 9 has a bottomed cylindrical shape, includes a washing and dewatering tub 8 coaxially, and includes an outer tub cover 9a on the upper portion thereof. The user of the washing / drying machine 1 can put the laundry in and out of the washing and dewatering tub 8 through the opening 2b by opening the outer lid 3 and the lid member 9c of the outer tub cover 9a.

  The driving device 10 is disposed at the center outside the bottom surface of the outer tub 9. The driving device 10 includes a motor 10a and a clutch mechanism 10b, and a rotating shaft 10c of the driving device 10 is configured to pass through the outer tub 9 and to be coupled to the washing / dehydrating tub 8 and the rotary blade 8b. . The clutch mechanism 10b has a function of transmitting the rotational power of the motor 10a to the washing and dewatering tub 8 and / or the rotary blade 8b. The motor 10a includes a rotation detection device 28 configured by a Hall element or a photo interrupter that detects the rotation, and a motor current detection device 29 that detects a current flowing through the motor 10a.

  The charging device 11 is provided on the front side of the top cover 2a. The detergent and the finishing agent are charged between the outer tub 9 and the washing / dehydrating tub 8 by the charging hose 11a.

  The water supply unit 12A is provided on the rear side of the top cover 2a. This water supply unit 12A supplies tap water from the water supply hose connection port 4 to the charging device 11 and a water-cooled dehumidification mechanism (not shown) described later. In addition, the water supply unit 12A supplies the tap water from the water supply hose connection port 4 and the bath water from the water absorption hose connection port 5 (see FIG. 1) to the outer tub 9 and the washing / dehydration tub 8 via the water injection hose 11b. Water can be poured into the outer tub 9 from between. Further, the water supply unit 12A can inject tap water from the water supply hose connection port 4 into the upper portion of the washing and dewatering tub 8 through the cleaning hose 11c. The detailed description of the water supply unit 12A will be described later with reference to FIG.

A drop portion 9 m provided on the bottom surface of the outer tub 9 communicates with the lower communication pipe 13. The lower communication pipe 13 is connected so as to communicate with the washing water drainage path 15 via the drain valve 14. By closing the drain valve 14, it is possible to store washing water and rinsing water in the outer tub 9 (hereinafter, collectively referred to as washing water unless they are particularly distinguished). Further, by opening the drain valve 14, the water in the outer tub 9 can be drained outside the washing / drying machine 1 through the washing water drainage channel 15.
Further, the lower communication pipe 13 is connected so as to communicate with a washing water circulation channel 18 (partially omitted) through a filtration device 16 and a circulation pump 17 installed at the lower part of the housing 2.

When the circulation pump 17 is driven, the washing water in the outer tub 9 flows into the filtration device 16 through the drop portion 9m and the lower communication pipe 13, and dust such as lint contained in the washing water is removed and circulated. It flows into the suction port of the pump 17.
In FIG. 2, the circulation pump 17 and the filtration device 16 are depicted as separate bodies, but the circulation pump 17 and the filtration device 16 in the present embodiment are integrally formed with each other. A circulation pump unit 26 (see FIG. 5), which will be described in detail later, is configured.

The washing water sent from the circulation pump 17 is poured through the washing water circulation channel 18 so as to be sprayed into the washing and dewatering tank 8 from above.
That is, the lower communication pipe 13 and the washing water circulation channel 18 that flow when the washing water extracted from the drop portion 9m of the outer tub 9 is sprayed from the upper part into the washing and dehydrating tub 8 are within the scope of the claims. This corresponds to the “first circulation path for once withdrawing the washing water in the outer tub and returning it to the outer tub again”.

  The drying duct 20 is installed vertically inside the back surface of the housing 2, and the lower part of the duct is connected to the drop portion 9m of the outer tub 9 by a rubber bellows tube 20a. A water cooling / dehumidifying mechanism (not shown) is built in the drying duct 20 to supply cooling water from the water supply unit 12A to the water cooling / dehumidifying mechanism. The cooling water flows down the wall surface of the drying duct 20 (a metal plate made of stainless steel or the like), enters the drop portion 9m, passes through the lower communication pipe 13 and the washing water drainage path 15, and is discharged outside the apparatus.

  The outlet of the drying duct 20 is connected to the inlet of the fan 21, and the outlet of the fan 21 is connected to the heater 22. The outlet of the heater 22 is connected to the blowout nozzle 24 via a blower duct 23 and a rubber bellows tube 23a.

  As described above, in the drying process, the air in the outer tub 9 is water-cooled and dehumidified by the drying duct 20 and sucked from the suction port of the fan 21, and the air discharged from the fan 21 is heated by the heater 22, so Can be blown out from the blowing nozzle 24 into the washing and dewatering tub 8.

  Although not shown, the air duct 23 has a temperature sensor for detecting the temperature of the air blown toward the washing and dehydrating tub 8 during the drying operation, and the drop portion 9m of the outer tub 9 has a washing A temperature sensor for detecting the temperature of the water and the temperature of the air sucked into the drying duct 20 during the drying operation, between the lower communication pipe 13 and the drain valve 14, the temperature of the washing water and the washing water drainage during the drying operation A temperature sensor that detects the temperature of the air discharged from the passage 15 to the outside of the machine, and an acceleration sensor that detects vibration acceleration due to vibration of the outer tub 9 are provided on the upper side of the outer tub 9. Further, a water level sensor (not shown) for detecting the level of the washing water stored in the outer tub 9 is provided on the upper side of the outer tub 9.

The control device 100 includes a microcomputer, a drive circuit, and the like, and also includes an on / off signal such as the operation switch 7a illustrated in FIG. 2 and an input circuit for an output signal from various sensors.
The microcomputer receives various information signals in the operation of the user, the washing process, and the drying process. The microcomputer is connected to a motor 10a, water supply solenoid valves 12a, 12b, 12c, 12d (see FIG. 4), a drain valve 14, a blower fan (not shown), and the like through a drive circuit. Control energization. Further, in order to inform the user of information related to the washing and drying machine 1, the display 7b, a buzzer (not shown), and the like are also controlled.
Further, as will be described later, the control device 100 according to the present embodiment starts and stops the circulation pump 17 at a predetermined timing, and also controls the rotation direction and the rotation speed of the circulation pump 17.

  As shown in FIG. 3, the washing and dewatering tub 8 includes a balance ring (also referred to as a fluid balancer) 8c formed of a synthetic resin or the like at the upper edge of the body plate 8a. The balance ring 8c is configured by enclosing a fluid having a large specific gravity therein, and when an eccentricity occurs due to the bias of the laundry when the washing and dewatering tub 8 rotates, the fluid moves in the balance ring 8c. This cancels the eccentricity and maintains the balance of rotation.

  The outer tank cover 9 a has a substantially semicircular inlet 9 b and is attached to the upper edge of the outer tank 9. The insertion port 9b is provided with a lid member 9c (see FIG. 2) attached so as to be openable and closable. Further, on the rear side of the outer tub cover 9a, a connection port 9d to which the end of the washing water circulation channel 18 (see FIG. 2) is connected, and a connection port 9e to which the bellows tube 23a (see FIG. 2) is connected will be described later. A connection port 9f to which a washing hose 11c for washing the tank is connected is provided. In addition, about the part which overlaps with FIG. 2, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 4, the water supply unit 12A includes a detergent water supply electromagnetic valve 12a, a finishing agent / tank cleaning water supply electromagnetic valve 12b, a cooling water supply electromagnetic valve 12c, an outer tank water supply electromagnetic valve 12d, and a switching electromagnetic valve 12e. A bath water pump 12f, and a water supply path unit 30.

  The detergent water supply solenoid valve 12a passes the tap water from the water supply hose connection port 4 through the water supply path unit 30 from the water inlet (not shown) and through the hose 12i connected to the water outlet 32 (not shown). Water is supplied to a detergent box (not shown) in FIG. The tap water poured into the detergent box is poured into the outer tub 9 through the charging hose 11a (see FIG. 2) together with the charged detergent.

  The finishing agent / tank washing water supply electromagnetic valve 12b is a water channel which will be described later via a washing hose 11c connected to the water outlet 34 through the water supply passage unit 30 from the water inlet 33 through the water supply hose connection port 4. Water is supplied to the member 25 (see FIG. 2).

  Further, the finishing agent / bath cleaning water supply electromagnetic valve 12b connects the tap water from the water supply hose connection port 4 through the water supply path unit 30 through the water supply path unit 30 to the water outlet 35 when the switching electromagnetic valve 12e is opened. Then, water is supplied to the finishing agent charging chamber (not shown) of the charging device 11 (see FIG. 2) through the hose 12j. The tap water poured into the finishing agent charging chamber is poured into the outer tub 9 through the charging hose 11a (see FIG. 2) together with the finished finishing agent.

The cooling water supply electromagnetic valve 12c supplies tap water from the water supply hose connection port 4 to a water cooling / dehumidification mechanism (not shown) of the drying duct 20 (see FIG. 2) via a hose (not shown).
The outer tank water supply electromagnetic valve 12d supplies tap water from the water supply hose connection port 4 into the outer tank 9 from a water injection hose 11b (see FIG. 2) connected to the flow path 12h.
The switching solenoid valve 12e switches whether to supply the finishing agent water.
In addition, the bath water from the water absorption hose connection port 5 pumped up by the bath water pump 12f is supplied into the outer tub 9 from a water injection hose 11b (see FIG. 2) joined and connected to the flow path 12h.

<Circulating pump unit>
Next, the circulation pump unit 26 (see FIG. 2) will be described.
FIG. 5 is an enlarged perspective view showing a circulation pump unit of the washing machine (washing / drying machine) according to the embodiment of the present invention. FIG. 6 is a plan view of the circulation pump unit viewed from the VI direction of FIG. FIG. 7 is an enlarged exploded perspective view showing a state where the circulation pump motor is removed from the circulation pump unit shown in FIG. FIG. 8 is an enlarged exploded perspective view showing a state where the filter unit is removed from the circulation pump unit shown in FIG. FIG. 9 is a partially cutaway enlarged perspective view showing a state in which the filter case of the circulation pump unit shown in FIG. 5 is partially cut away.

As shown in FIGS. 5 and 6, the circulation pump unit 26 is one in which the circulation pump 17 and the filtration device 16 are integrated.
That is, the motor case 41 of the circulation pump 17 and the filter case 51 of the filtration device 16 are integrally formed. More specifically, the motor case 41 and the filter case 51 are each formed of a substantially cylindrical member, and one end in the axial direction of the motor case 41 and the peripheral surface of the filter case 51 are coupled via a coupling portion 36. ing. The hollow portions of the motor case 41 and the filter case 51 are in communication with each other through the coupling portion 36.
As will be described later, a runner 43 (see FIG. 7) of the circulation pump motor 42 is disposed inside the motor case 41, and a filter main body 55 (see FIG. 8) of the filtration device 16 is arranged inside the filter case 51. Will be placed.

A first port 44 extends from the peripheral surface of the motor case 41, and the first port 44 communicates with a hollow portion of the motor case 41.
A second port 54 extends from one end of the filter case 51 in the axial direction, and the second port 54 communicates with a hollow portion of the filter case 51.
Incidentally, the wash water circulation channel 18 (see FIG. 2) is connected to the first port 44. The lower communication pipe 13 (see FIG. 2) is connected to the second port 54, and the proximal end of the washing water drainage channel 15 (see FIG. 2) is connected.
Note that the lower communication pipe 13 (see FIG. 2) and the washing water circulation channel 18 (see FIG. 2) are, as described above, referred to in the claims as “withdrawing the washing water in the outer tub once and again in the outer tub. This corresponds to the “first circulation path to return to”.

And the pipe | tube shown by the code | symbol 37 returns washing water from the circulation pump 17 to the filtration apparatus 16, and is equivalent to the "2nd circulation path" said to a claim.
The pipe 37 extends from the peripheral surface of the motor case 41 in parallel with the first port 44 and communicates with the hollow portion of the motor case 41.

  Then, as shown in FIG. 6, the pipe 37 is folded in a U shape in the middle of extending from the motor case 41, extends to the peripheral surface of the filter case 51, and introduces washing water formed on the peripheral surface of the filter case 51. The circulation pump 17 and the filtration device 16 are connected via the port 56. By this pipe 37, the hollow portion of the motor case 41 and the hollow portion of the filter case 51 communicate with each other.

The washing water inlet 56 in the present embodiment is formed as a long hole that is long in the axial direction of the filter case 51. The length D of the washing water inlet 56 is desirably about one third to four fifths of the length of the hollow portion of the filter case 51, and the more desirable length D is the length of the hollow portion of the filter case 51. 1/3 to 2/3.
The branch pipe 45 branched from the middle of the extension of the first port 44 is connected to a cleaning pipe (not shown) extending from the drop portion 9m (see FIG. 2) of the outer tub 9 (see FIG. 2). . The washing water extracted from the drop-in part 9m through the cleaning pipe (not shown) is passed through the lower communication pipe 13 (see FIG. 2) through the circulation pump 17 (see FIG. 2) and the lower communication pipe. 13 is washed.

  As shown in FIG. 7, the circulation pump motor 42 includes a motor main body 46 and a runner portion 43. The motor body 46 includes a rotary motor (not shown) in a bottomed cylindrical case 46a. This rotary motor can be rotated in both forward and reverse directions in accordance with a command from the control device 100 (see FIG. 2).

  The runner portion 43 has a runner 43a composed of wings combined in a cross shape. The runner 43a is attached to a rotary shaft of the rotary motor (not shown), and can be rotated around the rotary shaft by a driving rotary motor.

  Such a runner portion 43 is accommodated in the hollow portion of the motor case 41 through the opening of the motor case 41. The flange portion 46b of the case 46a of the motor body 46 has a support portion (not shown) for supporting the motor body 46 on the motor case 41 side, and the opening of the motor case 41 is watertight through a gasket or the like (not shown). To seal.

A communication opening 41 a to the first port 44 and a communication opening 41 b to the pipe 37 are formed on the inner peripheral surface of the motor case 41 so as to be aligned in the circumferential direction. Further, a communication opening 41c to the coupling portion 36 (see FIG. 6) is formed at the bottom of the motor case 41.
A pair of protrusions 41d and 41e are formed on the inner peripheral surface of the motor case 41 between the communication openings 41a and 41b. Incidentally, the protrusion heights of the protrusions 41d and 41e are set so as to be close to the rotation locus within a range that does not interfere with the rotation locus of the runner 43a that rotates in the motor case 41.

  In such a circulation pump 17, when the runner 43a rotates clockwise (hereinafter sometimes referred to as forward rotation), the washing water flowing from the communication opening 41c is counterclockwise as viewed from the front of the opening of the motor case 41 in FIG. A water stream is generated. Then, this water flow changes its flow by the protrusion 41d and travels toward the first port 44 through the communication opening 41a. That is, the wash water travels from the lower communication pipe 13 (see FIG. 2) to the wash water circulation channel 18 (see FIG. 2). Washing water will flow through the first circulation path.

  Further, when the runner 43a rotates counterclockwise (hereinafter sometimes referred to as reverse rotation), the washing water flowing from the communication opening 41c generates a clockwise water flow in the front view of the opening of the motor case 41 in FIG. And this water flow changes a flow with the processus | protrusion 41e, and goes to the piping 37 through the communication opening 41b. That is, the washing water flows through the second circulation path.

By the way, by increasing the distance between the diameter of the runner 43a and the inner peripheral surface of the motor case 41, in addition to the flow of washing water in the main first circulation path, even when the runner 43a is rotating forward, Washing water can also be supplied to the two circulation paths (pipe 37). As a result, 80% of the wash water can flow from the motor case 41 toward the wash water circulation channel 18 (see FIG. 2) from the first port 44, and the remaining 20% of the wash water can flow toward the pipe 37. .
That is, watering into the washing and dewatering tub 8 and flowing of washing water to the filtration device 16 described below can be performed in parallel.

As shown in FIG. 8, the filtration device 16 includes a filter case 51 and a filter body 55.
As described above, the filter case 51 has a hollow portion that communicates with the second port 54 and the hollow portion of the motor case 41.

The filter main body 55 includes a filter portion 57 and a handle portion 58.
The filter portion 57 includes a tubular portion 57a, a plurality of window portions 57b formed around the tubular portion 57a, and a mesh-like filter material 57c provided to close each window portion 57b in each window portion 57b. And.
The cylindrical portion 57a in the present embodiment has a substantially D shape in a cross-sectional view, and the handle portion 58 is formed on one end side of the cylindrical shape, and an opening 57d is formed on the other end side. Yes.

The handle portion 58 includes a ring portion 58a provided at the end of the cylindrical portion 57a so as to be rotatable around the axis of the cylindrical portion 57a, and a knob 58b attached integrally to the ring portion 58a.
The ring portion 58a includes an engagement piece 58c protruding outward in the radial direction.

  The filtration device 16 is configured such that the cylindrical portion 57 a is accommodated in the hollow portion through the opening of the filter case 51. Incidentally, the opening of the filter case 51 is formed with an engaging groove 51a for receiving the engaging piece 58c of the handle portion 58 so that the engaging piece 58c is inserted into the engaging groove 51a from a notch (not shown). The filter body 55 is supported by the filter case 51 by rotating the knob 58b. At this time, the communication opening 51b of the second port 54 faces the opening 57d of the cylindrical portion 57a.

  As shown in FIG. 9, in the filtration device 16, when the runner 43 a (see FIG. 7) rotates forward, the washing water flows from the lower communication pipe 13 (see FIG. 2) to the second port 54 and the communication opening 51 b (see FIG. 8). ), The opening 57d (see FIG. 8) of the cylindrical portion 57a, the filter material 57c, the coupling portion 36, the communication opening 41c (see FIG. 7), the hollow portion of the motor case 41, the communication opening 41a (see FIG. 7), the first It flows to the port 44 and the washing water circulation channel 18 (see FIG. 2). That is, as described above, the washing water flows through the lower communication pipe 13 and the washing water circulation channel 18 as the first circulation route.

  When the runner 43a (see FIG. 7) rotates in the reverse direction, the washing water first removes the filter material 57c from the lower communication pipe 13 (see FIG. 2) in the same manner as when the runner 43a (see FIG. 7) rotates forward. Through the hollow portion of the motor case 41. Thereafter, the washing water flows through the piping 37 (second circulation path) from the communication opening 41b and returns to the filtration device 16 again.

  At this time, as shown in FIG. 6, the washing water flows into the filter case 51 from the peripheral surface of the filter case 51, and forms a rotating water flow W toward the circumferential direction of the inner peripheral surface of the filter case 51. In addition, since the washing water flows into the filter case 51 via the washing water inlet 56 that is long in the axial direction of the filter case 51, a wide rotating water flow W is generated in the length direction of the filter case 51 (tubular portion 57a). It is formed.

<Operation process of washing dryer>
Next, an operation process executed based on a command from the control device 100 of the washing / drying machine 1 will be described. FIG. 10 is a process diagram illustrating an operation process of the washing / drying machine.

  As shown in FIG. 10, the control device 100 (see FIG. 2) performs an operation process mainly consisting of S <b> 1 to S <b> 23, as will be described next, the detergent water supply electromagnetic valve 12 a (see FIG. 4), finish agent / Tank cleaning water supply solenoid valve 12b (see FIG. 4), cooling water supply solenoid valve 12c (see FIG. 4), outer tank water supply solenoid valve 12d (see FIG. 4), switching solenoid valve 12e (see FIG. 4), drive device 10 (see FIG. 4) This is executed by controlling the circulation pump 17 (see FIG. 2).

  First, in the cloth amount sensing step S1, the controller 100 drives the motor 10a while increasing the speed from the specified first rotation speed to the specified second rotation speed in the dry cloth state before supplying the washing water. Based on the integrated current value, the mass of the laundry in the washing and dewatering tub 8 is detected.

  In the water supply / detergent input step S2, after the user inputs a predetermined amount of detergent into the detergent box (not shown), the control device 100 opens the detergent water supply electromagnetic valve 12a and supplies tap water to the detergent of the input device 11. Water is supplied to a box (not shown). The tap water poured into the detergent box is poured into the outer tub 9 together with the introduced detergent. In addition, the detergent water supply electromagnetic valve 12a is closed after a predetermined time has elapsed.

  In the detergent dissolving step S <b> 3, the circulation pump 17 is reversely rotated while the washing / dehydrating tub 8 is rotated. The detergent and combing step S3 will be described in more detail later.

In the rotation water supply step S4, the finishing agent / tank washing water supply electromagnetic valve 12b and the outer tank water supply electromagnetic valve 12d are opened to supply a predetermined amount of water to the outer tank 9, and the washing / dehydration tank 8 and / or the rotary blade 8b are installed. While rotating, the circulation pump 17 is rotated forward to spray a high-concentration detergent solution on the clothes in the washing and dewatering tub 8.
The rotational speed of the washing and dewatering tub 8 is preferably set to about 35 [r / min].
The rotational speed of the circulation pump 17 is preferably set to about 1700 to 2400 [r / min].
Under this condition, the pre-washing step S5 is performed, and the clothes are pre-washed with a high-concentration detergent solution.

In the cloth quality sensing step S6, first, the mass of the clothes including water is calculated. At this time, the mass of the laundry in the washing and dewatering tub 8 is detected based on the integrated drive current value of the motor 10a while the speed is increased from the specified first rotation speed to the specified second rotation speed.
Then, the cloth quality (water absorption) of the clothes is determined from the weight of the clothes calculated in the cloth amount sensing step S1 and the weight of the clothes including water calculated in the cloth quality sensing step S6. The following steps are controlled according to the determined cloth quality of the garment.

  In the washing water supply step S7, the outer tank water supply electromagnetic valve 12d is opened, and the inside of the outer tub 9 is matched to the clothing mass calculated in the cloth amount sensing step S1 and the clothing cloth quality determined in the cloth quality sensing step S6. Supply water.

  In the main washing step S8, the rotary wing 8b is rotated to wash the clothes. Although not shown, in the main washing step S8, the rotating blades 8b are alternately rotated in the forward and reverse directions to perform an operation of loosening clothes. Moreover, this main washing process and the loosening process are repeated several times. 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 drainage step S9, the control device 100 opens the drain valve 14 and drains the washing water in the outer tub 9.

  In the dehydration step S10, after the drainage is completed, the washing and dewatering tank 8 is rotated to dehydrate the water contained in the clothes.

In the rotary shower step S11, the drain valve 14 is closed, the outer tank water supply electromagnetic valve 12d is opened, and rinse water is supplied to the outer tank 9. Then, while rotating the washing / dehydrating tub 8, the circulation pump 17 is rotated forward to spray the rinse water on the clothes in the washing / dehydrating tub 8.
The rotational speed of the washing and dewatering tub 8 is preferably set to about 35 [r / min].
The rotational speed of the circulation pump 17 is preferably set to about 1700 to 2400 [r / min].

  In the dehydration step S12, the circulation pump 17 is stopped while rotating the washing and dewatering tank 8, and the rinse water is dehydrated from the clothes.

In the rotary shower step S <b> 13, the circulation pump 17 is rotated forward again while rotating the washing / dehydrating tub 8, and the rinse water is sprayed on the clothes in the washing / dehydrating tub 8.
The rotational speed of the washing and dewatering tub 8 is preferably set to about 35 [r / min].
The rotational speed of the circulation pump 17 is preferably set to about 1700 to 2400 [r / min].

  In the drainage step S14, the washing and dewatering tank 8 and the circulation pump 17 are stopped, the drain valve 14 is opened, and the rinse water in the outer tank 9 is drained.

  In the dehydration step S15, after the drainage is completed, the washing and dewatering tank 8 is rotated to dehydrate water (rinse water) contained in the clothes.

  In the rinsing water supply step S16, the drain valve 14 is closed, the finishing agent / tank washing water supply electromagnetic valve 12b and the switching electromagnetic valve 12e are opened for a predetermined time, respectively, and the rinsing water containing the finishing agent is supplied to the outer tank 9. . In the rinse water supply step S <b> 16, the outer tank water supply electromagnetic valve 12 d is opened to supply rinse water to the outer tank 9.

  In the loosening step S <b> 17, an operation of loosening clothes by rotating the rotary blades 8 b alternately in the forward and reverse directions is performed.

  In the stirring step S18, the washing and dewatering tub 8 is rotated while rinsing water is accumulated in the outer tub 9, and the clothes are agitated.

In the tank cleaning step S19, the finishing agent / tank cleaning water supply electromagnetic valve 12b is opened to supply cleaning water (tap water) to the water channel member 25. Then, the circulation pump 17 is reversely rotated while the washing and dewatering tub 8 is rotated.
At this time, the washing / dehydrating tub 8 is rotated at a speed (80 to 130 [80 [130 [ r / min]) for a predetermined time (for example, 90 seconds). The pattern for rotating the washing / dehydrating tub 8 is not limited to means for always rotating in the forward direction, and may be rotated by taking in the reverse direction and can be changed as appropriate.
Moreover, the rotational speed of the circulation pump 17 is performed at the same rotational speed as in the detergent dissolving step S3. This rotational speed will be described in detail later.

In this tank washing process S19, since the tap water supplied in the rinse water supply process S16 is stored at the bottom of the outer tank 9, the washing and dehydrating tank 8 is rotated at a high speed. Dirt and dust adhering to the bottom surface can be removed, and adhesion of dirt and dust can be suppressed.
Further, when a detergent film is formed on the filter material 57c of the filtration device 16 due to the reverse rotation of the circulation pump 17, this is removed.

  Moreover, in this tank washing | cleaning process S19, if tank washing | cleaning process S19 is complete | finished, the imbalance state of clothing will be monitored and it will be judged whether it transfers to final dehydration.

  In the draining step S20, the drain valve 14 is opened, and the rinsing water in the outer tub 9 is drained.

  In the dewatering / tank washing shower step S21, after the drainage is completed, the washing and dewatering tank 8 is rotated at a high speed to remove moisture contained in the clothes. At this time, it is desirable that the rotation speed of the washing and dewatering tub 8 is set to about 400 to 600 [r / min].

  In addition, when the mode which performs a series of operation | movement from washing to drying is set, drying process S22 is performed after spin-drying | dehydration and tank washing shower process S21. In the drying step S22, the cooling water supply electromagnetic valve 12c is opened, the heater 22 is energized, and the fan 21 is driven. After completion of the drying step S22, the user opens the outer lid 3 and the lid member 9c, takes out the clothing, closes the lid member 9c and the outer lid 3, and presses a predetermined button (for example, a start button), thereby Cleaning shower process S23 is started.

  In the tank cleaning shower step S23, tap water is sprinkled from the water channel member 25 on the outer peripheral surface of the washing and dewatering tank 8 and the inner peripheral surface of the outer tub 9 in the same manner as the tank cleaning step S19.

In addition, tank washing | cleaning process S19 and tank washing shower process S23 can set ON / OFF by the switch provided in the washing-drying machine 1. FIG.
The control device 100 completes a series of washing / drying steps for the laundry by executing the driving steps including S1 to S23.

Next, the detergent dissolving step of S3 will be described in more detail.
FIG. 11 is a flowchart of the detergent-dissolving process of the washing / drying machine.
As shown in FIG. 11, after the water supply / detergent charging step S2 (see FIG. 10) is performed, water is supplied into the outer tub 9 through a detergent box (not shown) in which a predetermined amount of detergent is charged. (Step S100), the process proceeds to the next step S101.

  In the next step S101, the control device 100 determines whether or not to perform the detergent dissolving operation depending on whether or not a predetermined amount of water has been supplied into the outer tub 9, that is, the rotation of the washing and dewatering tub 8 described below. And whether or not to start the circulation pump (reverse rotation start) is determined (step S101). If the water supply into the outer tub 9 is less than a predetermined amount, it is determined that the detergent-dissolving operation is not performed (No in step S101), and the determination of whether or not this detergent-dissolving operation is performed is repeated. If the water supply into the outer tub 9 reaches a predetermined amount, it is determined that the detergent melting operation is performed (Yes in step S101), and the process proceeds to the next step S102.

In step S102, the control device 100 performs a detergent melting step S3 shown in FIG. 10, which is a detergent melting operation.
In this step S102, the washing / dehydrating tub 8 is rotated and the circulation pump is activated (reverse rotation is activated).

Specifically, the control device 100 controls the motor 10a and the clutch mechanism 10b (see FIG. 2) to rotate the washing and dewatering tub 8 at a rotation speed of, for example, about 35 [r / min].
Further, the control device 100 rotates the circulation pump motor 42 of the circulation pump 17 at a predetermined rotation speed. The reverse rotation speed is preferably set to 1000 to 1700 [r / min]. In addition, by setting the rotation speed in this reverse rotation to 1700 [r / min] or less, the washing water circulating between the circulation pump 17 and the filtration device 16 is passed through the lower communication pipe 13 (see FIG. 2). Therefore, it is possible to prevent the reverse flow into the outer tub 9 more reliably and prevent the detergent with high concentration from coming into contact with the laundry.

  Thereby, the washing water in the motor case 41 shown in FIG. 6 flows into the filter case 51 through the piping 37 as the second circulation path, and forms the rotating water flow. And when the detergent film is formed in the filter material 57c of the filter main body 55 shown in FIG. 8, this rotating water flow of the washing water dissolves and removes the detergent film.

  Next, the control device 100 integrates the time during which the detergent melting operation is performed, and determines whether or not the predetermined time t that has been set in advance has elapsed (step S103). If it is determined that the predetermined time t has not elapsed (No in step S103), the control device 100 repeats step S103. If it is determined that the predetermined time t has elapsed (Yes in step S103), the control device 100 proceeds to the next step S104.

  The predetermined time t can be set to about 1 minute, for example. This is a time during which the detergent film formed on the filter material 57c can be sufficiently dissolved and removed when the reverse rotation speed of the circulation pump 17 is set to 1000 to 1700 [r / min]. Needless to say, the predetermined time t may be set to 1 minute or more.

  By the way, in the filtration apparatus assuming that there is no pipe 37, the circulation pump 17 is rotated forward at a rotational speed of 1700 to 2400 [r / min], so that the washing water is passed through the second port 54 shown in FIG. If the flow time is set to 2 minutes, the detergent film formed on the filter material 57c may not be removed even if the flow time is set to 2 minutes.

  In the next step S104, the control device 100 stops the rotation of the washing and dewatering tub 8 and stops the reverse rotation of the circulation pump 17, thereby completing the detergent dissolving step S3 shown in FIG.

According to the washing / drying machine 1 as described above, the following operational effects can be obtained.
In the washing / drying machine 1 of the present embodiment, the washing water stored in the outer tub 9 is circulated through the lower communication pipe 13 (see FIG. 2) and the washing water circulation channel 18 (see FIG. 2) as the first circulation path. When circulated at 17, the filter material 57c of the filtration device 16 collects lint and the like contained in the washing water. In the washing / drying machine 1, when washing water is circulated in this manner, a detergent film may be formed by adhering powdered detergent or liquid detergent having a high concentration to the filter material 57 c.

And the filter material 57c in which such a detergent film | membrane was formed tends to produce clogging, and cannot collect lint etc. efficiently. Moreover, the filter cleaning display part (illustration omitted) which requests | requires a user the cleaning of the lint etc. in the filtration apparatus 16 may malfunction.
On the other hand, the washing / drying machine 1 according to the present embodiment can return the washing water from the circulation pump 17 to the filtration device 16 via the pipe 37 of the circulation pump unit 26 as the second circulation path. The returned washing water prevents the formation of the detergent film on the filter material 57c, and the detergent film formed on the filter material 57c is dissolved and removed by the returned washing water.
Therefore, according to this washing / drying machine 1, the filtration performance of the lint etc. of the filtration apparatus 16 can be maintained favorably.

  Further, for example, the present embodiment is different from that in which the washing water stored in the outer tub 9 is passed through the filtration device 16 through the lower communication pipe 13 (see FIG. 2) to dissolve the detergent film of the filter material 57c. In the laundry dryer 1 of the form, the detergent film of the filter material 57c is melted with the washing water returned from the circulation pump 17 adjacent to the filtration device 16. Therefore, in this washing / drying machine 1, since the washing water is passed through the short path (second circulation path) and the detergent film of the filter material 57c is dissolved, the time for removing the detergent film can be shortened.

  Incidentally, the removal time of the detergent film in the washing / drying machine 1 can be about 1 minute as the predetermined time t. On the other hand, in the case where the detergent film of the filter material 57c is melted with washing water that flows through the lower communication pipe 13 (see FIG. 2) and the washing water circulation channel 18 (see FIG. 2) as the first circulation path, 2 The removal time more than double is required.

  Further, according to the washer / dryer 1, the circulation pump 17, the filtration device 16, and the pipe 37 as the second circulation path are integrated to form the circulation pump unit 26. Can be achieved.

  Moreover, according to the washing / drying machine 1, the direction of rotation of the circulation pump motor 42 is switched between forward and reverse directions so that the flow of the washing water flows through the lower communication pipe 13, the washing water circulation water path 18 (first circulation path), and the pipe 37 (second Therefore, the flow path switching control by the control device 100 is simplified.

  Further, according to the washing and drying machine 1, the filtration device 16 and the pipe 37 as the second circulation path are connected via the washing water inlet 56 formed on the peripheral surface of the filter case 51. In the filter case 51, a rotating water flow W directed in the circumferential direction of the inner peripheral surface of the filter case 51 can be formed. Therefore, according to this washing / drying machine 1, the detergent film of the filter material 57c is efficiently dissolved and removed by the rotating water flow W of this washing water.

  Further, according to the washing / drying machine 1, the washing water inlet 56 is formed by a long hole extending in the axial direction on the peripheral surface of the filter case 51, so that the filter case 51 rotates wide in the length direction. A water flow W can be formed. Therefore, according to the washing / drying machine 1, the detergent film of the filter material 57c is dissolved and removed more efficiently by the rotating water flow W of the washing water.

As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, It can implement with a various form.
In the present embodiment, the circulation pump unit 26 in which the circulation pump 17, the filtering device 16, and the pipe 37 (second circulation path) are integrated into the first circulation path (the lower communication pipe 13 and the washing water circulation water path 18). Although what was arrange | positioned above was demonstrated, this invention isolate | separates the circulation pump 17 and the filtration apparatus 16, and these circulation pump 17 and the filtration apparatus 16 are connected by the piping 37 (2nd circulation path). It can also be configured.

  In the above embodiment, it is assumed that the rotation operation of the washing and dewatering tub 8 and the reverse rotation operation of the circulation pump 17 are performed in parallel with each other in the detergent dissolving step S3. It is also possible to perform a reverse rotation operation of the circulation pump 17 after the rotation operation of the cum dewatering tank 8 is performed.

1 Washer / Dryer 8 Washing / dehydrating tank (inner tank)
DESCRIPTION OF SYMBOLS 9 Outer tank 10 Drive apparatus 10a Motor 10b Clutch mechanism 10c Rotating shaft 13 Lower communication pipe (1st circulation path)
14 Drainage valve 15 Washing water drainage channel 16 Filtration device 17 Circulation pump 18 Washing water circulation channel (first circulation channel)
26 Circulation pump unit 36 Coupling part 37 Piping (second circulation path)
41 motor case 41a communication opening 41b communication opening 41c communication opening 41d protrusion 41e protrusion 42 circulating pump motor 43 runner part 43a runner 44 first port 45 branch pipe 46 motor body 51 filter case 54 second port 55 filter body 56 washing water inlet 57 Filter part 57a Tubular part 57b Window part 57c Filter material 57d Opening 58 Handle part 100 Control device W Rotating water flow

Claims (5)

A housing,
Anti-vibration support in the housing, and an outer tub for storing washing water inside,
An inner tub that is rotatably supported in the outer tub and accommodates laundry;
A driving device for rotationally driving the inner tank;
A first circulation path for extracting the washing water in the outer tub and returning it to the outer tub again;
A circulation pump provided on the first circulation path;
A filtration device provided on the first circulation path upstream of the circulation pump;
A second circulation path for returning washing water from the circulation pump to the filtration device;
A washing machine comprising: The washing machine according to claim 1,
The circulation pump and the filtration device are integrated with each other to constitute a circulation pump unit disposed on the first circulation path, and the second circulation path is formed by piping provided in the circulation pump unit. Washing machine characterized by being made. The washing machine according to claim 2,
The circulation pump unit has a circulation pump motor that can rotate in both forward and reverse directions, and the direction of rotation changes in either the forward or reverse direction, so that the flow of the washing water flows in the first circulation path and the second circulation path. A washing machine characterized by switching from one to the other. The washing machine according to claim 1,
The filtration device includes a cylindrical filter case containing a filter,
The washing machine, wherein the filtration device and the second circulation path are connected via a washing water inlet formed on a peripheral surface of the filter case. The washing machine according to claim 4,
The washing machine is characterized in that the washing water inlet is formed by a long hole extending in the axial direction on the circumferential surface of the cylindrical filter case.

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