JP4737245B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a drum-type washing machine having a filter device that captures foreign matter such as lint contained in waste water.

  Conventionally, this type of washing machine is discharged in a state where foreign matter such as lint from clothes and foreign matters are mixed in the drainage, and the drainage pump, drainage valve, drainage path of the washing machine body, and the house where the washing machine is installed In order to prevent the clogging of the drain pipe leading to sewage or the like, a filter device that captures the above-described yarn waste has been proposed (for example, see Patent Document 1).

  FIG. 4 shows a cross section of a conventional drum-type washing machine described in Patent Document 1.

  In FIG. 4, a water tank 204 supported in the washing machine housing 201, a rotating drum 205 rotatably disposed in the water tank 204, and a lower part of the water tank 205 for draining the washing water accumulated in the water tank 205. Disposed between the drainage path 211, the drainage drain pump 210 provided downstream of the drainage path 211, the drainage hose 227 that drains out of the product from the drainage pump 210, and the drainage path 211 and the drainage pump 210. A filter body 220 having a plurality of arm portions 221 that capture foreign matter such as lint provided is configured.

  In the above-described configuration, the washing water is always filled from the water tank 204 to the drainage pump 210 and the drainage hose 227 during the washing operation. However, by washing the drainage hose 227 from the lower part of the product to the upper side, washing is performed during washing. Since the structure prevents the water from being discharged out of the apparatus, the foreign substance cannot be removed from the filter body 220 during the washing process.

On the other hand, with regard to the configuration for processing lint and foreign matter such as dust captured by the filter device, the lid is opened from the front of the washing machine housing and removed, and the original state is kept so that there is no water leak again. There has been proposed a structure for returning the lid (for example, see Patent Document 2).

  FIG. 5 is an external view of the conventional washing machine described in Patent Document 2, and FIG. 6 is a perspective view of the periphery of the filter device of the washing machine, showing a state in which the lid is opened. 7 is a front view of the lid portion of the filter device of the washing machine.

  As shown in FIG. 5, a lid body 101 is arranged on the lower right front side of the washing machine housing 112 of the washing machine, and a filter device is formed inside the lid body 101.

  As shown in FIG. 6, the lid 101 is configured to be openable and closable. FIG. 6 shows an open state. The lid 101 is usually manufactured as a plastic molding member, and the structure can be rotated at the lower end. It is pivotally supported, and the upper end side closes in the direction of arrow F around the lower end. On the back surface of the lid body 101, a single rib 102 extending in an inclined manner and a hook 103 whose tip is processed into a hook shape project. In addition, a cap 106 is disposed on the inside of the lid 101 in order to take out the filter device from the washing machine housing 112, and to perform operations such as mounting, and a gripping portion 106b for rotating the cap 106 integrally projects. It is installed.

In the filter device having such a configuration, the cap 106 is rotated and loosened, the filter body (not shown) that captures the foreign matter inside is taken out, cleaned and removed, and then the cap 106 is normally tightened to the original position again. By wearing it, water leakage from this part must be prevented. Therefore, in this conventional example, water leakage is prevented by the following configuration.

  The front view of the lid body 101 in FIG. 7 shows a state in which the lid body 101 is correctly closed. That is, when the lid 101 is closed in the direction of arrow F in FIG. 6 when the center angle θ of the gripping portion 106b is approximately 90 degrees, as shown by the broken line in FIG. Since the lid body 101 can be completely closed without the gripping portion 106b of the cap 106 coming into contact with it, water leakage can be prevented, and at the same time, the tip hook-like portion of the hook 103 is locked in the locking hole 104. Body 101 does not open easily.

When the center angle θ of the gripping portion 106b is other than 90 degrees with respect to the normal mounting state described above, the rib 102 comes into contact with the gripping portion 106b even when the lid 101 is closed, and the lid 101 is closed. Can not do. Therefore, since it is detected that the cap 106 is incompletely installed because the lid 101 does not close normally, the user operates the grip portion 106b again to rotate the cap 106 and tighten it to an appropriate position. And it can return to the state without water leakage. That is, this is a configuration in which the user determines whether the lid body 101 is normally attached to the washing machine housing 112 or not, and tries to prevent water leakage.
JP 2001-104690 A JP 2002-282616 A

  However, since the drum-type washing machine realized by the conventional technique as disclosed in Patent Document 1 is always in a state where the washing water is filled from the drainage path 211 to the drainage hose 227, the filter is not used during the washing process. When the body 220 is opened, there is a problem in that all of the washing water leaks from the portion where the filter body 220 is disposed, which may cause expansion damage.

  Also, in the conventional filter device configuration as shown in Patent Document 2, is the cap 106 correctly attached and can water leakage be prevented? Can you do it? Is the lid 101 correctly attached to the washing machine housing 112? Or is it not installed? It is a major premise that the user confirms the closed state of the lid 101.

  However, if the user concentrates on cleaning such as removing foreign substances from the filter part and forgets to close the lid 101, it will not be possible to confirm the prevention of water leakage.

  Alternatively, the structure of the lid 101 is a necessary configuration, and this configuration cannot be realized with a structure without the lid 101 in terms of design or reduction in the number of parts.

  In addition, the lid 101 is generally made of a plastic molding material or the like, and the arrangement location is usually formed in the lower part of the washing machine, so that the user or a householder who passes near the washing machine hits the foot. In such a case, there is also a concern that the user may forcibly push the lid 101 without recognizing that the cap 106 is tightened poorly, and the lid may be damaged or detached from the main body. When it reaches the state, it will not be possible to check for leakage.

  Since the operation of such a washing machine is not performed by a specialist but is generally operated by a housewife or the like at home, water leakage must be prevented in an easy-to-understand manner.

  The present invention solves the above-described problems, and provides a drum type washing machine that suppresses washing water leakage and performs washing safely even if the filter body is opened during all the steps of washing, rinsing, and dewatering. The purpose is that.

In order to solve the above-described conventional problems, a drum type washing machine of the present invention includes a washing machine housing that houses a water tub provided with a rotating drum, a drain valve that drains or stops the washing water in the water tub. , A drain pump configured downstream of the drain valve, a filter body that captures foreign matters such as lint disposed between the drain valve and the drain pump, a detachable rotation cap for the filter body, Reed switch attached to the filter body and the filter case containing the cap, a magnetic body attached to the cap at a position corresponding to the reed switch, and a filter device configured to seal with water between the filter body and the filter case And a display means for displaying the operation state and a control device for controlling a series of strokes, and the cap is mounted so that it can be attached and detached from the outside of the washing machine casing. When the filter body is water-sealed by the operation of the cap, the magnetic body attached to the cap is turned on corresponding to the reed switch, and the control device starts the process. when a signal is input, the previous water supply step of supplying water to the washing water in the water tank, in washing operation, when the oN signal from the previous SL reed switch is not inputted, stops the progression of stroke abnormality before Symbol display means a configuration in which a notification, in step with the operation of opening the drain valve after rinsing cycle, when the oN signal from the reed switch is not input, as well as abnormality notification before Symbol display means stops the progression of stroke , closing the discharge valve, it is obtained by the you effluent constituting the water between the drain pump and the drain valve by driving the drain pump.

This makes it possible to suppress water leakage even in the case where the filter part is filled with washing water, such as a rinsing process or a draining process, even if the filter part cap is not properly installed. This process can be carried out without water leakage, and treatment is possible even if foreign matter accumulates in the filter during the drainage process or the like and a drainage abnormality occurs.

When the drum type washing machine of the present invention detects that the filter device is incompletely attached during the process (especially during drainage), while notifying the display means that the cap has been retightened by displaying the abnormality of the user treatment, Since the drain valve is closed and the drain pump is driven, the wash water accumulated between the drain valve and the drain pump is immediately discharged by the drain pump, and the leakage of the wash water from the filter portion can be suppressed.

The first invention includes a water tub for rotatably accommodating the rotary drum for introducing washing clothes, a washing machine housing accommodating the water tank freely swing, a water supply means for supplying water to the water tank, the water tank A drain valve for draining or stopping the washing water, a drain pump configured on the downstream side of the drain valve, and a filter body for capturing foreign matter such as lint disposed between the drain valve and the drain pump; A cap having a knob capable of operating the filter body in a rotational direction and an axial direction, a filter case containing the filter body and the cap, a reed switch attached to the filter case, and a position corresponding to the reed switch a magnetic body attached to said cap, and a filter device for water sealing between the filter body and the filter case, the drain valve and the filter device A hose to be connected, a drain hose for discharging washing water from the drain pump to the outside of the machine, a display means for displaying a course and time of washing, and a series of processes such as washing, rinsing and dehydration are controlled. and a control device, wherein the cap is mounted so as to be the detachable operation from the washing machine housing outer side, in a state where the water sealing of the filter body in operation of the cap, attached to the cap the The magnetic body is configured to be turned on in response to the reed switch, and when the start signal of the process is input, the control device is configured to supply the wash water into the water tank before the water supply process, and the laundry process. in the case where the oN signal from the previous SL reed switch is not inputted, a configuration in which the abnormality notification before Symbol display means to halt the progression of stroke, opens the drain valve after rinsing cycle operation In step with, when said ON signal from the reed switch is not input, as well as abnormality notification before Symbol display means to halt the progression of stroke, closing the drain valve, the drain valve by driving the drain pump wherein by you effluent constituting the water between the drain pump, if the mounting of the filter device in stroke progress (in particular in waste water) detects that it is incomplete, abnormal display of user actions on the display means and In order to close the drain valve and drive the drain pump while notifying the retightening of the cap, the washing water accumulated between the drain valve and the drain pump is immediately drained by the drain pump , and the washing water from the filter section is discharged . Leakage can be suppressed.

  In addition, if it is detected that the filter tank is not fully installed in a state where water is not supplied to the aquarium, or in a washing process in which the filter unit or drainage pump unit is not filled with washing water, Since the notification is made before starting the operation of the stroke without operating the pump, the user can respond quickly.

  In the second invention, in particular, the control device of the first invention is set to return to the original stroke operation when the ON signal from the reed switch is not input during the stroke and the ON signal is input again thereafter. As a result, even if the user opens the filter device by mistake, the washing time will not increase if the filter device is closed again.

(Embodiment 1)
The drum type washing machine in the 1st Embodiment of this invention is demonstrated using FIGS. FIG. 1 is a sectional view of the drum type washing machine in the present embodiment, FIG. 2 is a partial sectional view when the filter device is mounted, and FIG. 3 is a control flowchart of the washing machine.

  In FIG. 1, a rotating drum 5 having a circular clothing insertion port 25 in the front and a water tank 1 that rotatably stores the rotating drum 5 are disposed in a washing machine casing 2. A drum-type drum-type washing machine for putting clothes in and out of the rotary drum 5 from the door body 8 provided on the front side is configured.

  The rotary drum 5 is disposed in the water tank 1 with the bottomed cylindrical opening side on the front side of the washing machine casing 2 and the bottom side on the back side of the washing machine casing 2, and the rotation shaft 15 is It is pivotally supported by a bearing 16 provided on the back surface of the water tank 1.

  A belt drive structure in which a drive belt 19 is installed between a drive pulley 17a mounted on a rotary drive shaft of a drum drive motor 4 attached to the lower surface of the water tank 1 and a driven pulley 17b on the rotary shaft 15 side, thereby The rotary drum 5 is rotationally driven by the drive motor 4.

  Washing water is supplied into the water tank 1 from water supply means 21 disposed above the inside of the washing machine casing 2, and a large number of through holes 20 are formed in the peripheral surface of the rotating drum 5, so It is comprised so that it can distribute | circulate, and it is comprised so that the effect | action of the beating washing which lifts clothing up and may fall from upper direction by rotation of the rotating drum 5 is made | formed.

  A drainage valve 10 for opening or stopping drainage of the washing water in the aquarium 1 is installed at the lower part of the aquarium 1, and is a drainage path connecting the drainage valve 10 and the drainage pump 11 for forcibly discharging the washing water. A filter device 12 is disposed on the way.

  A hose 13 made of an elastic material such as rubber is connected between the drain valve 10 and the filter device 12, and a drain hose 6 for draining the washing water is connected to the tip of the drain pump 11.

The reason for constituting the drainage pump 11 is that when draining the washing water out of the washing machine, if the drainage place is higher than the washing machine installation surface, the lift when the tip 6a of the drainage hose 6 is lifted as shown in the figure It is because it is demanded. In addition, even when draining to a drainage groove or the like below the floor where no lifting head is required, time can be shortened by forced drainage by the drainage pump 11.

  In the concave portion 7 formed below the front surface of the washing machine housing 2, a cap 31 having a substantially circular plane shape for performing the operation of the filter device 12 for removing foreign matter such as lint in the drainage is disposed. The configuration is movable in the rotational direction for attaching and detaching the filter device 12 described later, and in the axial direction for removing the filter device 12.

  By using the drainage path in this manner, waste such as yarn waste can be collected in the front structure of the pipe to the drainage pump 11, so that it is possible to prevent the drainage pump 11 from being clogged and clogged in the drainage pipe at the washing machine installation location. .

  During the washing process, the drain valve 10 is in a closed state, and the hose 13 is not filled with washing water so that it is hollow. At this time, even if the cap 31 is operated to remove the filter body described later, the filter There is no problem of water leaking from the device 12.

  Inside the upper part of the washing machine casing 2 is a control device 3 that controls a series of processes such as washing, rinsing, dehydration, etc., and has a built-in microcomputer for controlling the drum drive motor 4, drain valve 10 and drain pump 11. In the upper front of the washing machine housing, there are provided input means such as a start switch for washing machine operation, and display means 22 for displaying the washing course, remaining time, and the like.

  As shown in the partial cross-sectional view of FIG. 2, the cap 31 is housed in a recess 7 formed in the washing machine housing 2 so as not to protrude outwardly from the outline 9 of the washing machine housing 2. The cap 31 is integrally formed with a character-shaped knob 32 on the front side of the washing machine housing 2 (left side in FIG. 2) for a user to pinch and rotate the finger, and on the back surface, that is, the inside of the washing machine housing 2. The concave engagement portion 33 formed on the filter body 34 is pivotably engaged with the convex engagement portion 38 formed on the cap 31 and connected to the convex engagement portion 38, and the knob 32 is picked with a finger or the like in the axial direction of the cap 31. The filter body 34 can be pulled out and taken out of the machine.

  The cap 31 and the filter body 34 are accommodated in a filter case 39 having an inlet 36 and an outlet 37, and an outer peripheral cylindrical portion 35 of the connecting portion on the cap 31 side of the filter body 34 is made of an elastic body such as rubber. The O-ring 40 configured as described above is attached, and the filter case 39 is brought into close contact with the front surface 41 of the filter case to be water-sealed.

  Laundry drainage containing foreign matter such as yarn waste is engaged with the filter body 34 when passing through the filter body 34 from the inlet 36, and is sent out from the outlet 37 by the drainage pump 11 with the foreign matter removed. Further, it is discharged out of the machine through the drainage hose 6 of FIG.

  The filter case 39 has an integrally formed large-diameter cylindrical portion 42 on the recess 7 side of the washing machine housing 2. The cap 31 is rotatably housed inside the cylindrical portion 42, and the inner periphery of the cylindrical portion 42. A plurality of protrusions 43 are formed on the portion, and the protrusion 45 formed on the outer peripheral portion 44 of the cap 31 is pressed to the filter body 34 side, whereby the O-ring 40 is connected to the filter case front surface 41 via the outer peripheral cylindrical portion 35. Is pressed against the washing water inside the filter case 39 and the outside.

  A magnetic body 46 is housed in a part of the outer peripheral portion 44 of the cap 31, and an attachment plate 47 is integrally formed on the outer periphery of the cylindrical portion 42 of the filter case 39, and a reed switch 48 is attached to the attachment plate 47. Corresponding to the position of the magnetic body 46, the magnetic corresponding operation part 49 in the reed switch 48 is made to be able to approach.

  That is, the reed switch 48 is turned on only when both the rotation direction and the axial direction of the cap 31 match between the magnetic body 46 and the magnetic corresponding operation unit 49, and the control device 3 is normally connected to the control device 3 from the signal line 52. It is the structure which inputs that mounting | wearing is made.

  Hereinafter, according to the control flowchart of FIG. 3, a configuration for preventing water leakage and overflow will be described according to a signal from the reed switch 48 when the user tries to perform a washing operation.

  The user puts clothes and detergent into the washing machine in a predetermined manner, turns on the power switch (S100), then sets the course for which driving is desired (S101), and then inputs a start switch (S102).

  Here, the control device 3 determines whether or not the reed switch 48 of the filter unit is input before the operation is started (S103).

  When it is detected that the filter is on, that is, the filter is completely attached, the washing machine starts operation (S104), starts water supply to the water tank, and starts the washing process (S105).

  In step S103, if the reed switch 48 is in the OFF state, that is, if it is not input, the operation of the stroke is stopped (S110), and the process immediately proceeds to abnormality notification. An indication indicating “filter section retightening” of “abnormality information that can be repaired by operation” is performed (S111), the filter cap is correctly attached (S112), and it is determined whether or not the reed switch 48 is input again. (S103).

  That is, if the filter is normally mounted (S112), the operation is automatically returned to the reed switch detection of S103, which is the original work step, without performing a new operation.

  In the washing process (S105), the reed switch detection is continued (S106), and if it is detected that the filter is on, that is, the filter is completely attached, the process proceeds to the rinsing process of the next process (S107).

  In step S106, if the reed switch 48 is turned off for some reason (for example, the cap 31 is operated during the washing process), the process is immediately stopped (S110), an abnormality is notified (S111), and the filter is performed. Is displayed on the display means.

  Since the drain valve 10 is closed during washing, the filter part and drain pump part are not filled with washing water, so there is no washing water outflow or leakage from the filter part. There is no water leak.

  Reed switch detection continues even after the transition to the rinsing process (S107) (S108), and is OFF for some reason (for example, the cap 31 is operated during the rinsing process or the filter body 34 is removed during drainage). If this is the case, the progress of the process is immediately stopped (S114), an abnormality is notified (S115), the drain valve 10 is closed (S116), the drainage from the water tank 1 is stopped, and the drainage pump 11 is driven. By performing (S117), the washing water inside the hose 13 and the filter device 12 is discharged.

  In steps S114 to S118, if there is an abnormality in the filter device 12, the drainage from the water tank 1 is stopped, and the drainage pump 11 is driven to eliminate water leakage during the re-installation of the filter. There is.

  When the cap 31 is completely attached (S118) and it is confirmed that the reed switch 48 has been returned to the ON state again (S108), the stroke is started and advanced to the end without performing a new operation (S108). S109).

  About the drum type washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the door 8 is opened and the washing machine is started by putting the detergent into the rotary drum 5 and starting the washing machine, a predetermined amount of water is poured into the washing machine casing 2 from the water supply means 21. The rotating drum 5 is driven to rotate and the washing process is started.

  Before the start of the stroke or during the washing stroke, the drain valve 10 is in a closed state, so that even if the filter body 34 is taken out, no water leaks. However, if the cap 31 is not attached at a normal position, the next stroke is performed. It is possible to notify in advance that there is a possibility of causing a large amount of water leakage in the drainage process.

  Further, even if the cap 31 of the filter device 12 is not properly attached during the process of rinsing or draining, the drain valve 10 is closed and the drain pump 11 is driven. After the leak is prevented and the filter is properly installed, the subsequent steps can be safely promoted.

  In addition, if the foreign matter accumulates too much on the filter body 34 of the filter device 12 during the stroke, and the drainage time becomes abnormally long and the drainage abnormality occurs, the conventional example may cause water leakage, so the filter device part 12 is cleaned. However, in this application, foreign matter can be removed.

  As described above, in the present embodiment, when the washing water is filled by changing the control when the filter is abnormal depending on whether or not the filter device is filled with the washing water. Since the drainage pump is driven, water leakage from the filter unit can be suppressed and washing can be performed safely.

  As described above, the drum-type washing machine according to the present invention reliably notifies water leakage due to incomplete installation when the filter device is manually attached or detached to periodically remove foreign matters in the drainage. Therefore, it can be applied and applied to washing machines in general and equipment with waste water mixed with foreign matter.

Sectional drawing of the drum-type washing machine in this Embodiment Partial sectional view when the filter device of the washing machine is installed Control flow chart of the washing machine Sectional view of a conventional drum-type washing machine External view of another conventional drum-type washing machine Perspective view around the filter device of the conventional washing machine Front view of the lid part of the filter device of the conventional washing machine

DESCRIPTION OF SYMBOLS 1 Water tank 2 Washing machine housing | casing 3 Control apparatus 5 Rotating drum 6 Drain hose 21 Water supply means 10 Drain valve 11 Drain pump 12 Filter apparatus part 13 Hose 22 Display means 31 Cap 32 Knob 34 Filter body 39 Filter case 40 O-ring 46 Magnetic body

Claims (2)

A water tub for rotatably accommodating the rotary drum for introducing washing clothes, a washing machine housing accommodating the water tank freely swing, a water supply means for supplying water to the water tank, draining the wash water in the water tank or A drain valve for stopping water, a drain pump configured on the downstream side of the drain valve, a filter body for capturing foreign matter such as lint disposed between the drain valve and the drain pump, and rotating the filter body A cap having a knob operable in a direction and an axial direction, a filter case containing the filter body and the cap, a reed switch attached to the filter case, and a cap attached to the cap at a position corresponding to the reed switch hose connecting the magnetic body, and a filter device for water sealing between the filter body and the filter case, the filter device and the drain valve A drainage hose for discharging washing water from the drainage pump to the outside of the machine, a display means for displaying the course and time of washing, and a control device for controlling a series of processes such as washing, rinsing and dehydration. wherein the cap is fitted to allow the washing machine detachable operation from the outside of the housing side, in a state where the water sealing of the filter body in operation of the cap, the magnetic body attached to said cap The control device is configured to be turned on in response to the reed switch, and when the start signal of the stroke is input, the control device is configured to perform the operation before the water supply stroke in which the washing water is supplied into the water tank and in the washing stroke . If the serial oN signal from the reed switch is not inputted, a configuration in which the abnormality notification before Symbol display means to halt the progression of stroke in stroke with operation of opening the drain valve after rinse step Wherein when the ON signal from the reed switch is not input, as well as abnormality notification before Symbol display means to halt the progression of stroke, closing the drain valve, the drainage pump and the drain valve by driving the drain pump drum-type washing machine, which was to be that configuration drainage of water between. 2. The drum type washing machine according to claim 1, wherein the control device is set to return to the original stroke operation when the ON signal from the reed switch is not input during the stroke and the ON signal is input again thereafter.