KR102557398B1 - washing machine - Google Patents

Abstract

A vertical washing machine that is excellent in water saving and functionally is provided. The washing machine 1 rotates around a housing 10 with a drain path installed therein, a drip tray 20 supported inside the housing 10, and an axis extending vertically from the inside of the drip tray 20. A rotary tub 30 is provided. The rotating tank 30 has an outlet 36 opened to the bottom of the body member 31 capable of independently storing water from the water receiving tank 20. The gutter tank 20 has a first drain port 26 facing the inside and a second drain port 27 communicating with the outlet port 36 . The drainage path has a first path 92 connected to the first drain port 26 and a second path 93 connected to the second drain port 27 .

Description

washing machine

The disclosed technology relates to a vertical washing machine, and in particular, to a washing machine equipped with a holeless rotating tub (washing and spin-drying tub) capable of independently storing water.

[0002] Currently, the majority of washing machines are fully automatic washing machines that automatically perform a series of washing processes including washing, rinsing, spin-drying, and drying in some cases. [0003] Among such washing machines, so-called drum-type washing machines in which a drum for loading laundry extends horizontally or in an inclined direction and rotates around an axis are increasing in recent years because of their ability to save water. However, a vertical washing machine rotating around an axis, in which a washing and spin-drying tank for loading laundry is extended in a vertical direction, is still popular.

In a vertical washing machine, a washing and dewatering tank in the shape of a cylindrical container is accommodated in a water storage tank installed in a housing, and most of the washing and dewatering tank is provided with a large number of dewatering holes in a wide range of its peripheral wall so that drainage and spin-drying can be easily performed. has been In this type of washing machine, water used in each washing or rinsing process accumulates not only in the washing and spin-drying tank but also in the space between the wash-and-spinning tank and the water storage tank.

In contrast, there is also a washing machine equipped with a holeless washing and dewatering tank (corresponding to a rotary tub) without such a spin-drying hole.

For example, conventionally, there is disclosed a washing machine having a non-hole-shaped spin-drying/washing tub in which a draining hole is formed only at the uppermost part of the drip tray. In the above-mentioned washing machine, the number of rotations of the holeless spin-drying and washing tub is increased, and water overflows through the spin-drying hole to drain the water into the drip tray and drain the tub. Water accumulating on the bottom of the drip tray is drained to the outside of the washing machine by opening the solenoid valve and returned to the holeless dewatering/washing tub by driving the circulation pump.

Further, there is also a washing machine disclosed in which an opening is formed at the uppermost part and water overflows therefrom by high rotation. However, in this washing machine, a drain hole is formed in the center of the bottom of the washing and dewatering tank, and the water in the washing and dewatering tank can be drained through the drain hole by opening the drain valve.

In the case of such a washing machine, water used in each cycle of washing or rinsing accumulates only in the washing/drying tank. Therefore, it is excellent in water saving, and it becomes possible to reduce the amount of water used by 20 to 30%, depending on the specifications of the washing machine and the amount of stored water.

Specifically, a circulation path branching off from a portion on the upstream side of the drain valve in the drain path and extending upward along the outside of the water tank accommodating the washing and dewatering tank is provided. A hot water storage tank for temporarily storing waste water, a circulation pump for circulating washing water, and the like are installed in the circulation path. A heater is incorporated in the hot water tank to heat water. A discharge pipe of a circulation path for returning washing water to the washing and dewatering tank is disposed in the washing machine body (housing).

At the time of washing, washing water is circulated while heating until it reaches a predetermined water temperature in the hot water tank. It is disclosed that since the amount of washing water is small and hot water can be made in a short time while suppressing power consumption, effects of saving water and improving washing power can be obtained.

In addition, a washing machine in which the washing and dewatering tank is not a holeless and does not have a path for circulating water, but an annular water channel is provided near the upper edge of the washing and dewatering tank has been disclosed in the related art. In the water passage, a large number of irrigation holes are formed over the entire circumference.

In the washing machine, when rinsing is performed while spin-drying, water is supplied to the water passage to spray the laundry collected on the inner circumferential surface of the washing and dewatering tank in the form of a shower from the spout hole, so that even a small amount of water is applied evenly to the laundry. is letting it soak in.

Further, as one of the embodiments, it is disclosed that a water channel is formed on the upper portion of a balancer installed on the upper edge of the washing and dewatering tank, and a water pouring hole is formed by vertically penetrating the balancer.

A washing machine having a holeless washing tub (rotating tub) and a rotating blade (pulsator) having rear blades has been conventionally disclosed. A swirling flow is generated in the washing tub in combination with the vortex generated by the washing machine.

Therefore, an upwardly inclined peripheral wall 34 is provided on the outer circumferential portion of the pulsator, and a plurality of water flow holes arranged in a grid form horizontally penetrate the peripheral wall so that water flows out smoothly by centrifugal force. formed in one state. Further, in order to allow water to flow into the rear surface side of the rotary blade, a large number of water passage holes are formed in the center side region.

In addition, conventionally, in order to remove dirt or mold adhering between an inner washing tub and an outer washing tub, a washing machine is disclosed in which a supply pipe for spraying water in a shower shape is installed on top of these, and a brush is installed between each layer. there is. At the time of washing, washing water is sprayed from the supply pipe, and the inner washing tub is slowly rotated to perform brushing. In this way, dirt, mold, etc. are washed off with washing water, and dirt, mold, etc. are removed with a brush.

Further, a conventional washing machine is disclosed in which an inner tub has a plurality of spin-drying holes and cannot store water without an outer tub, but it is possible to select immersion washing of the inner tub and the outer tub as one of the driving courses.

As described above, in the conventional washing machine equipped with a holeless rotary tub, even if water saving is excellent, problems to be improved in terms of function, such as the structure of the drain path and the structure for circulating water, are recognized.

(First task)

In the conventional washing machine (Conventional 1), since water cannot be drained to the outside by overflowing the water through the drain hole at the top of the no-hole type dewatering/washing tub, it is necessary to rotate the no-hole type dehydration/washing tub, making drainage difficult. there is Since the water simply overflows while the water is in, the amplitude of the drip tray becomes large, which is a problem. In contrast, another conventional washing machine (Conventional 2) has no such problem, since it can drain through the drain hole.

However, another conventional washing machine (conventional 2) has a complicated drainage structure, so there is a problem that it is easy to cause drainage failure and the like. That is, at the junction of the first drain connected to the drain hole and the second drain connected to the bottom of the water tank (corresponding to the water receiving tank), a drain switching means for closing either is provided, but lint etc. are mixed in the drain, It is likely that lint or the like is bitten into the drainage switching means that switches the water channel, and it does not operate properly. Further, in the conventional washing machines (Conventional 1 and Conventional 2), if a large amount of water is stored in the drip tray, it may leak to the outside of the drip tray, causing trouble such as failure of the electrical system.

(Second task)

There is also a model (washing machine equipped with a drain pump) in which the drain water from the washing machine is forcibly drained by a drain pump instead of natural drain by flowing water. A washing machine equipped with a drain pump is widely used in the United States and Europe.

In such a washing machine, in order to discharge water to a sink or the like, the head of the drain path downstream of the drain pump is set higher than the upper limit of the water storage amount of the washing machine. For this reason, in a washing machine equipped with a drain pump, water can be stored by the water level difference without stopping draining. Therefore, it is common for a washing machine having a drain pump not to have a water stop valve installed in the drain path.

When a drain pump is installed in a washing machine equipped with such a rotary tub capable of storing water, the drain pump is usually installed instead of the electromagnetic valve or the drain valve. It is also conceivable to install a drain pump in series on the downstream side of the electromagnetic valve or drain valve, but in that case, the function of the electromagnetic valve or drain valve becomes useless. Also, if the drain pump operates in a state where the solenoid valve or the drain valve is closed, the drain pump may malfunction.

(Third task)

In the conventional washer (Conventional 2), a large-capacity hot water tank is installed in a circulation path diverged from a drainage path, and water accumulated there is heated by a heater. As a result, the amount of washing water increases by the amount of the hot water tank, and there is a problem in terms of saving water. Heating also takes time.

Since the hot water tank is disposed at the lower part of the washing machine body, the installation space is required, and the capacity of the washing and dewatering tank 23 needs to be reduced or the size of the washing machine main body needs to be enlarged, so the size is compact. There is also a problem in terms of anger.

There are cases in which foreign substances such as buttons are mixed in the wash water. The drain path or the circulation path including the diverting piece of the conventional washing machine (2) has a complicated structure and the wash water is drained or circulated in a state in which foreign substances are mixed. Therefore, it is easy to break down the switching piece, clog the flow path, or break down the circulation pump. As a result, problems such as poor drainage or insufficient temperature detection may occur, and the hot water tank may be heated unnecessarily.

In addition, the discharge pipe of the circulation path is disposed in the washing machine body. In addition, since the water tank accommodating the washing and spin-drying tank is supported by the washing machine body in an oscillating state, the outflow position of wash water from the discharge pipe is out of the opening of the washing and spin-drying tank, so that the wash water does not return to the washing and spin-drying tank. and may flow into the water tank.

(4th task)

When water in the rotating tub is circulated in a washing cycle or the like, the circulating water is normally returned therein through an upper opening of the rotating tub. Since the rotating tub and the drip tray accommodating the rotating tub vibrate during spin-drying, etc., the water inlet is disposed at a position spaced apart from the opening of the rotating tub. Therefore, by using the discharge force of the circulation pump, water is sprayed from the water inlet toward the center of the rotating tub, or by installing a tubular member on the lower side of the water inlet and letting it flow down through the opening of the rotating tub, the water is discharged into the inside of the rotating tub. have it sent

However, there are cases where a part of the water discharged from the water inlet overflows to the outside of the rotating tub due to variations in discharge power due to on/off operation of the circulation pump or difference in lift, or fluctuations in the opening of the rotating tub due to rotational driving of the rotating tub. .

In the case of a holeless rotary tank, water once overflowing to the outside of the rotary tank does not return to the inside of the rotary tank unless it is returned to the circulation pump. As a result, when the amount of water overflowing the outside of the rotating tub increases, the amount of water used for washing decreases correspondingly. Therefore, the amount of water is not appropriate, resulting in deterioration in washing performance, or an increase in power consumption due to a burden on driving. there is a risk of

Further, in another conventional washing machine (conventional 3), since water is supplied to the washing and dewatering tank through the water channel, water can only be supplied in small amounts. Water can be supplied by increasing the depth of the irrigation hole or waterway, but this is not realistic. Since the circulating water is mixed with lint, there is a possibility that the irrigation hole is clogged. Therefore, it cannot be used for water circulation such as washing cycles that require efficient circulation of a large amount of water. Since a water outlet corresponding to the water inlet is fixed to the frame of the washing machine, when the washing and spin-drying tub and the outer tub are vibrated, water may leak to the outside of the outer tub.

(Fifth task)

When the rotating tub is holeless, since the amount of water for the laundry is small, the content of fine lint generated from the laundry and floating in the water is relatively likely to increase. For this reason, there is a problem that the lint is reattached to the laundry and becomes fluff.

Reattachment can be prevented by installing a lint filter in the circulation path to collect lint during circulation, but stable and strong circulation ability is required to efficiently collect lint with the lint filter while circulating water smoothly.

As in another conventional washing machine (Conventional 4), it is conceivable to obtain hydraulic power by discharging water into a circulation path with the rear wing of a rotating pulsator, but it is difficult to obtain strong hydraulic power sufficient to collect lint.

That is, when a large-diameter pulsator is installed at the bottom of the holeless rotating tub, the lower space of the pulsator is closed. Therefore, even if a hind wing is installed on the back side of the pulsator and the water is blown outward in the radial direction when the pulsator rotates, water flowing into the back side of the pulsator is insufficient against negative pressure. As a result, sufficient discharge cannot be obtained.

In another conventional washing machine (Conventional 4), a plurality of water passage holes are formed in the range of the center side of the rotor blade, and water is introduced to the lower side of the pulsator using negative pressure, but the present inventors have studied and improved It turned out that there is room for

That is, it was found that when water is discharged with the hind wing of the pulsator in the holeless rotary tank, even if the total opening area of the water passage hole is excessively small or excessively large, stable strong circulation ability cannot be obtained.

(The 6th task)

When the rotating tub is holeless, the overflowing water is drained as it is in the space outside the rotating tub (between the rotating tub and the drip tray), so water hardly accumulates. For this reason, it is easy to become an unsanitary state because dirt accumulates there or mold is generated.

It is also conceivable to store water in both the rotary tank and the drip tray to perform immersion washing, but in that case, a large amount of water is required, which is difficult in terms of saving water. It is also conceivable to store water only on the outside of the rotating tub to perform immersion cleaning, but the user manually drains the water so that it does not drain, then inserts a detergent or the like from the gap between the rotating tub and the drip tray, and inserts a hose to supply water. It has no choice but to be cumbersome, so it is not realistic.

As for mold and the like, disinfection by chemicals has a large effect on the effectiveness of the medicine, and since sufficient rinsing is required so that the medicine does not remain, a large amount of water is required. In addition, since chemicals are required for each cleaning, maintenance costs are also incurred. In contrast, disinfection by hot water has a high disinfection effect, obtains a stable disinfection effect depending on the temperature, does not require rinsing, and is advantageous in saving water. Hot water is also effective for removing dirt.

However, it is impractical to turn a large amount of water into hot water using a heating device such as a heater. For example, assuming a general washing machine, if 100L of water (20°C) is heated to 70°C, which enables mold and mildew to be eliminated in 1 hour, about 5800 W for water heating and about 200 W for heating the rotary tub, heat dissipation The consumption by this is about 1000 W, and the total power consumption of about 7000 W is required.

Household power supply has an upper limit of 1500 W in relation to the breaker, and even if 1200 W is used for the heating, it takes nearly 6 hours to heat. Therefore, it is impractical to remove bacteria by heating a large amount of water.

It is conceivable to heat water at normal temperature while supplying it and supply it as hot water, but the amount of water required for washing cannot be made into hot water due to power shortage at 1200W.

Therefore, the purpose of the disclosed technology is to improve these problems, and to provide a vertical washing machine that is excellent in water saving and functionally.

All of the disclosed technologies relate to vertical washing machines equipped with holeless rotary tubs. Hereinafter, the disclosed technology will be specifically described corresponding to the first to sixth problems described above.

(First description for the first task)

A washing machine according to a first technique includes a housing provided with a drain path at a lower portion, a drip tray supported inside the housing, and a rotating tub into which laundry is put and rotating around an axis extending vertically from the inside of the drip tray. provide The rotating tank has a body member capable of storing water independently from the water receiving tank, and an outlet opening at the bottom of the body member.

The water gutter tank has a first drain opening at the bottom of the gutter tank and facing the inside of the gutter tank, and a second drain opening at the bottom of the gutter tank and communicating with the outlet through a partitioned water conduction path. I have it.

And, the drain path has a first path connected to the first drain port and a second path connected to the second drain port.

That is, according to this washing machine, since the rotating tub and the drip tray each have an individual drainage path, water storage and drainage in the rotating tub and water storage and drainage in the drip tray can be efficiently performed.

It is preferable that the water gutter tank further has a third drain port opened to the upper side of the water gutter tank, and the drain path further has a third path connected to the third drain port.

If so, since the water can be drained from the third drain opening on the upper side of the drip tray through the third path, even if there is an abnormal water supply, there is no overflow of water from the drip tray into the housing. Therefore, troubles, such as failure of an electrical system, can be prevented.

In particular, the drain path further has a fourth path connected to the first path, the second path, and the third path to drain water to the outside of the housing, and the float displaces the flow path in the first path. It is preferable to provide a water stop valve for water shut off and to provide a drain valve on the downstream side of each confluence of the first path and the second path in the fourth path.

By doing so, water storage and drainage of the rotary tank and water storage and drainage of the drip tray can be efficiently performed with a simple configuration. Since electrical control can also be simplified, there is also an advantage that member cost and running cost can be reduced.

The water stop valve may have two upper and lower regulating portions that regulate displacement of the float, and at least either one of the float and the regulating portion may be made of a soft member having elasticity.

By doing so, even if the gutter tank vibrates, the float and the upper and lower regulating portions are in elastic contact, so that it is possible to prevent abnormal noise from occurring due to the water stop valve.

A state in which the upper regulating portion is formed in a flange shape protruding into the flow path, closes the flow path by being in close contact with the floating float, and the lower regulating portion is formed in a convex shape protruding into the flow path and the flow path is opened. In, it is good to support the float that has descended.

By doing so, a functional water stop valve can be realized with a simple configuration.

It is preferable that a part of the first path is composed of a flexible hose, and the hose and the upper regulating part are integrally formed.

In doing so, close contact between the float and the upper regulating portion is increased, and stable indexing can be performed. Since it can be connected in a detachable state, it can be easily replaced even when trouble occurs. Even if the foreign matter is clogged, the clogging can be eliminated by pressing the hose as it is.

The drainage path further has a fourth path connected to the first path, the second path, and the third path to drain water to the outside of the housing, and each of the first path and the second path An on-off valve may be provided.

Even in such a case, trouble can be prevented and functional drainage can be performed.

(Second description for the second task)

A washing machine according to the second technique includes a housing provided with a drain path at the bottom, a water tray supported inside the housing, and a rotating tub into which laundry is put and rotating around an axis extending vertically from the inside of the water tray. provide The rotary tank has a body member capable of storing water independently from the water gutter tank, and an outlet opening at the bottom of the body member.

The water gutter tank has a first drain opening at the bottom of the gutter tank and facing the inside of the gutter tank, and a second drain port that is open at the bottom of the water gutter tank and communicates with the outlet through a partitioned water supply path.

In addition, the drain path is a first path connected to the first drain port and a second path connected to the second drain port, and the first path and the second path are connected to drain water to the outside of the housing. It has a third path to A drainage pump is installed on the downstream side of each confluence of the first path and the second path in the third path.

That is, according to this washing machine, since the rotating tub and the drip tray have separate first and second paths, respectively, water storage and drainage in the rotating tub and water storage and drainage in the drip tray can be efficiently performed. And, a third path provided with a drainage pump is connected to the downstream side of the part where these individual paths join, and the water is forcibly discharged to the outside of the housing through the third path. Therefore, since the drainage pump and each drainage passage are not in series, even if an on-off valve or the like is provided in these passages, functional drainage can be performed without wasting their functions. As long as both paths are not closed, there is no excessive load on the drain pump, so that the drain pump can properly function.

In particular, it is preferable to provide a water stop valve for water stop with a float that displaces the flow path in the first passage.

By doing so, water storage and drainage of the rotary tank and water storage and drainage of the drip tray can be efficiently performed with a simple configuration. Since electrical control can also be simplified, there is also an advantage that member cost and running cost can be reduced.

The known water stop valve may have two upper and lower regulating portions that regulate displacement of the float, and at least either one of the float and the regulating portion may be made of a soft member having elasticity.

By doing so, even if the gutter tank vibrates, the float and the upper and lower regulating portions are in elastic contact, so that abnormal noise due to the water stop valve can be prevented from occurring.

It is preferable that the lower regulating portion is formed in a convex shape protruding into the passage, and supports the lowered float in a state in which the passage is open.

By doing so, a functional water stop valve can be realized with a simple configuration.

It is preferable that a part of the first path is composed of a flexible hose, and the hose and the regulating part are integrally composed.

By doing so, the adhesion between the float and the regulating portion increases, and stable indexing can be performed. Since it can be connected in a detachable state, it can be easily replaced even when trouble occurs. Even if the foreign matter is clogged, the clogging can be eliminated by pressing the hose as it is.

Further, the first switching position and the second route are connected to the third route via a switching valve, and the switching valve has a first switching position at which the first route and the third route communicate with each other; Switching control may be performed to a second switching position at which a route and the third route communicate with each other and a third switching position at which the first route and the second route communicate with each other.

Furthermore, a first on-off valve may be installed in the first path and a second on-off valve may be installed in the second path, and the first on-off valve and the second on-off valve may be controlled to open and close in conjunction with the drain pump. .

Even in this case, functional water storage and drainage can be performed while preventing occurrence of trouble in the drainage pump.

(Third technology for the third task)

A washing machine according to a third technique includes: a housing provided with a drain path at a lower portion, a drip tray supported inside the housing, and an axis extending vertically inside the drip tray into which laundry is loaded and driven by a driving device. A rotating tub that rotates in the rotating tub, a circulation path for circulating water pooling in the rotating tub, a heater for heating the water pooling in the rotating tub, and a control device for controlling rotation of the rotating tub and heating of the heater.

The rotating tank has a body member having an open top and capable of storing water independently from the water gutter tank, and an outlet opening at the bottom of the body member. The water gutter tank is partitioned at the bottom of the water gutter tank and has a water conduction path communicating with the outlet and communicating with both the drainage path and the circulation path. And, the water supply path is formed so that the cross section of the passage spreads along the bottom surface of the water gutter tank, and the heater is installed so as to spread inside the water supply path.

That is, since this washing machine is equipped with a holeless rotary tub, it is excellent in water saving. Since a circulation path for heating and circulating the water accumulated in the rotary tub is also provided, and the washing water or rinsing water can be warmed, washing performance and rinsing performance are also excellent. At the bottom of the water gutter tank, there is a water conduction path communicating with both the drainage path and the circulation path, and the water conduction path is formed thinly so that the cross section of the passage spreads along the bottom surface of the water gutter tank. By forming the water conduction path using the wide bottom surface of the water receiving tank, it is possible to obtain a thin but large passage cross-section. Since unnecessary space is eliminated, the capacity of the water receiving tank and the rotating tub can be increased with respect to the housing, and the size can be compacted.

And, since the heater is installed so as to spread inside the water supply passage, the circulating water can be efficiently heated in a small space. A small amount of water can be heated to a high temperature in a short time.

Specifically, the water conduction path may be partitioned at the bottom of the water gutter tank by a wide concave portion formed concavely at the bottom of the water gutter tank and a partition plate blocking the upper portion of the wide concave portion.

In this way, it is possible to form a water supply passage that does not leak with a simple structure.

A water conduction surface that slopes downward from the outer circumferential side toward the center side is formed on the inner surface of the bottom of the body member, and the outlet is opened at the lowermost part of the water conduction surface with an opening area equal to or larger than the flow passage cross-sectional area of the water conduction path. It is desirable to do

Then, the water accumulated in the rotary tub is guided to these water dilution surfaces and flows out from the outlet without stagnation. Therefore, it is difficult to generate residual water and has excellent drainage properties.

In particular, a heat shield plate may be arranged on at least one of the upper and lower sides of the heater.

In this way, even if the cross section of the passage is thin, excessive heating of the member defining the water conduction path by the heat shield plate can be prevented, and deformation or the like can be prevented even if the member is made of synthetic resin.

Further, it is preferable that the circulation path has a discharge port for returning water into the body member through the opening of the body member, and the discharge port is provided above the water receiving tank.

Then, even if the drip tray swings, the positional relationship between the discharge port and the opening of the body member does not change. Therefore, it is possible to stably return the circulating water into the body member.

In addition, the water supply passage has a circulation drainage port opened on a lower surface thereof, and an end portion of the circulation passage is connected to the circulation drainage port through a connecting member, and the connecting member extends its upper end from the lower surface of the water drainage passage. In a protruding state, a gap between the circulation drainage port and the end portion of the circulation path may be closed.

By doing so, it is possible to prevent foreign substances such as buttons from entering the circulation drain while securing the sealability of the connecting portion with one connecting member, so that both reducing the number of parts and preventing troubles can be achieved.

The driving of the driving device and the heating of the heater may be controlled by the control device simultaneously or alternately.

If performed simultaneously, since the circulating water can be heated, the heating efficiency can be increased, and the water temperature can be raised in a well-balanced manner. Stable operation can be performed by alternating the power supply when the amount of power supply is not sufficient.

A water level sensor for detecting a water level in the rotating tub and outputting the water level to the control device may be further included, and the control device may heat the heater only when the water level is equal to or greater than a predetermined lower limit value.

By doing so, co-heating of the heater can be prevented.

A circulation pump controlled by the control device is installed in the circulation path, the control device has an interlocking control circuit for controlling driving of the circulation pump and heating of the heater, and heating of the heater and driving of the circulation pump. The interlocking control circuit may be configured so as to interlock.

In that case, since the empty heating of the heater can be prevented regardless of control, safety is further improved.

In this case, a pump operation check mechanism for detecting the operation state of the circulation pump and outputting it to the control device may be further provided.

In this way, since it is possible to prevent air heating of the heater due to a failure of the circulation pump, safety is further improved.

Further, a water temperature sensor for detecting the water temperature of the water pooling in the rotary tub and outputting it to the control device may be provided, and the control device may drive the circulation pump only when the water temperature is equal to or higher than a predetermined set value.

In this case, since the circulation pump is driven intermittently, power consumption can be suppressed and excessive heating can also be suppressed.

(Fourth technology for the fourth task)

A washing machine according to a fourth technique includes a water tray elastically supported inside a housing, a rotating tub into which laundry is put, and rotating around an axis extending vertically from the inside of the water tray, water accumulated in the rotating tub, It is provided with a circulation path that returns to the rotating tub by ejecting from the discharge port.

The rotating tank has an upper portion open and communicates with a body member capable of independently storing water from the water receiving tank, a ring-shaped balancer installed along the inside of the opening of the body member, and an upper outer side of the body member from below the balancer It has an overflow path. In addition, a cylindrical water stop rib protruding upward from the balancer is installed on the upper part of the balancer, and the discharge port is installed on the upper part of the water receiving tank, and protrudes radially inward than the water stop rib to face the inside of the rotating tank are doing

In other words, since this washing machine is equipped with a holeless rotary tub, it is excellent in saving water. Since it is provided with a circulation path for ejecting and circulating the water accumulated in the rotary tub from the discharge port, and can circulate a large amount of washing water or rinsing water, washing performance and rinsing performance are also excellent.

In addition, since the balancer installed along the inside of the opening of the rotating tub is provided with an overflow path that communicates from the lower side to the upper outer side of the rotating tub, the water that has risen along the inside of the rotating tub can overflow without leaving any residue during spin-drying. Excellent dehydration performance.

Further, since the discharge port is provided above the drip tray tank, even if the drip tray elastically supported by the housing vibrates, the positional relationship between the discharge port and the opening of the body member does not change. Therefore, there is no displacement of the discharge destination, and water can be stably returned to the rotating tub. In addition, a water stop rib is provided on the upper part of the balancer, and since the discharge port protrudes radially inward from the water stop rib and faces the inside of the rotating tank, even if the force of water ejected from the discharge port is weakened and spillage or the like occurs, it is prevented from flowing into the drip tray. Therefore, it is possible to prevent a decrease in the amount of water used for washing.

Therefore, according to this washing machine, even if the rotating tub is holeless, water can be stably circulated while maintaining an appropriate flow rate.

The drip tray tank has a tank cover installed thereon, and the tank cover protrudes inward in a radial direction and has a flange portion covering between openings of the body member, and the discharge port is integrally formed in the flange portion. You can do it.

In this way, a functional washing machine with a small gap can be realized using an existing relatively simple structure.

In that case, a cylindrical cover rib protruding upward from the inside of the water stop rib at the top of the balancer in the radial direction to close the gap between the flange parts is further provided, and in the balancer, between the water stop rib and the cover rib It is only necessary to provide a flow path for returning water that has entered the formed annular groove into the body member.

In this way, it is possible to prevent laundry from being chewed by the cover rib, and water entering the back side of the cover rib can be returned to the rotary tub through the flow path.

In that case, it is preferable that the balancer has an attachment portion installed on the body member and a balance adjusting portion integrated inside the attachment portion, and the flow path is provided between the attachment portion and the balance adjustment portion.

By doing so, assembling of the balancer to the fuselage member becomes easy, and the flow path can also be easily formed without impairing the function of the balancer.

In addition, when the balancer has an annular liquid chamber for accommodating fluid therein, and a plurality of flow restraints protruding radially from the liquid chamber, the flow path is installed by vertically penetrating the flow restraint It may be possible to make it

Even in this case, a flow path can be formed without impairing the function of the balancer.

(5th skill for the 5th task)

A washing machine according to a fifth technique includes a water tray supported inside a housing, and a rotating tub into which laundry is put and rotationally driven around an axis extending vertically from the inside of the water tray.

The rotary tank includes a body member capable of storing water independently from the water tank, a pulsator installed on the bottom of the body member and driven to rotate around the axis, and a side portion of the body member, bounding the pulsator It communicates with the upper laundry space partitioned by and the lower pump space, and has a circulation path for circulating water through the pulsator.

The pulsator includes a disk-shaped base, a plurality of water passage holes penetrating the base and communicating the washing space and the pump space, installed on the back surface of the base, and discharging water in the pump space in a radial direction. It has hind wings that transmit.

And, the water passing holes are arranged unevenly in the center side area of the base, and the ratio of the total opening area of the water passing holes to the total area when the surface of the base is viewed from the vertical direction is from 1.5 to 1.5. It is set within the range of 4.0%.

That is, since this washing machine is equipped with a holeless rotary tub, it is excellent in water saving. And, the inside of the rotating tub is divided into a washing space and a pump space with the pulsator as a boundary, and these are communicated through a circulation path. Further, since the pulsator has a plurality of water passage holes that communicate the washing space and the pump space and rear blades that send water radially from the pump space, when the pulsator rotates with water stored in the rotary tub, the pump Water in the space is extruded into the circulation path by the hind wing, and water in the washing space is introduced into the pump space through the water passage hole, so that the water in the rotary tub circulates.

At this time, the smaller the gap in the space with the hind wing of the pump space, the stronger discharge is obtained, but it is difficult to introduce an amount of water that can follow the discharge into the pump space. Therefore, even if a sufficient negative pressure is obtained, the water in the pump space is insufficient and sufficient discharge cannot be obtained.

On the other hand, by disposing the water passing holes unevenly in the area on the center side of the base and setting the ratio of the total opening area of the water passing holes to the total area (projection area) of the base within the range of 1.5 to 4.0%, as will be described later. Likewise, it is possible to obtain a strong discharge, and it is possible to circulate the water vigorously and smoothly.

Specifically, in the surface of the base, the water passing holes of 92% or more of the total opening area may be arranged in a circular region concentric with the base and having a size of 80% of the outer diameter.

By doing so, the pump function in the pump space can be exhibited effectively, and smooth and powerful water circulation can be realized.

In particular, it is preferable that the rotary tub further has a lint filter installed on a side of the body member and facing the laundry space, and the circulation path communicates with the laundry space through the lint filter.

As described above, when the rotating tub is holeless, there is a problem that the amount of lint floating in the water tends to be high because the amount of water per laundry is small, but in this washing machine, the amount of water is small and strong circulation ability is obtained. Therefore, efficient collection of lint can be realized.

More specifically, on the surface of the base, a boss portion located at the center, a plurality of stirring blades radially extending from the boss portion, and a substantially flat outer circumferential side spread between the adjacent stirring blades. It is good to have a flat part, and to make the said water passage hole intensively arrange in the said flat part.

By doing so, it is possible to uniformly form a large number of water passing holes through which water can be introduced into the pump space with little resistance. It is also advantageous in terms of easy molding. Even if there is laundry in the rotary tub, it can be accommodated in the agitation blades, so that the water passage hole is less likely to be clogged. Therefore, water can be stably introduced into the pump space without fluctuating the amount of water.

The outer circumferential portion of the pulsator may be brought into close proximity to the bottom portion of the body member through a gap.

In this way, since the free entry and exit of water from the periphery of the pump space can be suppressed, stable strong discharge can be obtained.

(Sixth technology for the sixth task)

A washing machine according to a sixth technique includes a water tray supported inside a housing, a rotating tub into which laundry is put and which rotates around an axis extending in a vertical direction from the inside of the water tray and stores water independently from the water tray; A driving device for rotating the rotating tub, a rotation sensor for detecting the rotational speed of the rotating tub, a water level sensor for detecting the water level in the rotating tub, and based on signals input from the rotation sensor and the water level sensor, A control device for controlling the driving device is provided.

Then, the control device, together with a washing execution unit for washing the laundry put into the rotary tub, causes washing water stored in the rotary tub to overflow to a predetermined washing level by rotating the rotary tub while controlling the rotational speed. and a tank cleaning execution unit that cleans a space (also referred to as an outer space) between the rotary tank and the water receiving tank.

That is, the target is a vertical washing machine equipped with a so-called Holeless rotary tub, which is advantageous for saving water. The control device has a washing execution unit that performs washing processing such as washing and spin-drying, as well as a bath washing execution unit that cleans the outer space. The bath washing execution unit stores washing water in the rotary tub up to a preset washing water level. The washing water level is set low, and the washing water to be used is relatively small. The washing water overflows by rotating the rotary tub while controlling the rotational speed. Even if there is little washing water, water can be sprayed evenly in a shower shape from the top of the rotating tank to the outside thereof by the centrifugal force caused by the rotation (shower washing). As a result, the entire area of the outer space outside the rotating tub, which is difficult to clean, can be efficiently cleaned with a small amount of washing water.

When the water gutter tank is supported by the housing in a oscillating state, a vibration sensor for detecting vibration of the water gutter tank is further provided, and the tank cleaning execution unit performs the rotation based on a signal input from the vibration sensor. What is necessary is just to increase the rotational speed of the said rotating tub step by step or continuously, and to overflow, adjusting the rotational acceleration of a tub|tub.

In this case, when the drip tray in which the washing water is stored vibrates greatly as the rotating tub rotates, there is a possibility that noise, vibration, and even abnormal vibration such as the washing machine toppling over may occur. On the other hand, if the bath cleaning execution unit adjusts the rotational acceleration of the rotating tub based on the vibration signal input from the vibration sensor and increases the rotational speed of the rotating tub step by step or continuously so as to overflow the tub, such troubles can be solved during tub washing. occurrence can be prevented.

In addition, a heating device for heating the washing water pooling in the rotary tank, a sensor for detecting the temperature of the washing water pooling in the rotary tank and the ambient temperature of the water tray tank are provided, and the control unit is provided with a predetermined value serving as a standard for disinfection. A sterilization temperature may be set in advance, and the bath washing execution unit corrects the sterilization temperature upward based on a signal input from the sensor and heats the washing water at the corrected temperature.

In this way, since the outer space can be heat-sterilized, mold and bacteria can be killed, and the outer space can be washed in a clean state even microbiologically. In the case of shower washing, the temperature of the washing water tends to drop, but the bath washing execution unit corrects the sterilization temperature upward and heats the washing water so that appropriate sterilization can be performed, so that it is not affected by external factors such as environmental temperature. , a stable disinfection effect can be obtained.

The sixth technique also relates to a bath cleaning method. This tub cleaning method is a tub cleaning method for a vertical washing machine in which a rotary tub into which laundry is put is housed inside a water tray tank in a state where water can be stored independently from the drip tray tank and can rotate around an axis extending in a vertical direction. It's about how. and a preparation step of storing washing water in the rotary tub up to a preset washing water level, and a washing step of washing the inside of the water receiving tank by allowing the washing water to overflow while increasing the rotational speed of the rotary tub.

According to this bath cleaning method, the same effect as that of the washing machine described above is obtained.

Specifically, the first washing step in which the washing step increases the rotational speed of the rotating tub step by step or continuously up to a predetermined first rotational speed so as to overflow, and the rotational speed of the rotating tub at the first rotational speed It is preferable to include an intermediate stand-by step of maintaining the rotating tub for a predetermined period of time, and a second cleaning step of overflowing by increasing the rotational speed of the rotary tub stepwise or continuously from the first rotational speed to the predetermined second rotational speed.

In the first washing step, the rotational speed is increased from a non-rotating state to the first rotational speed, and overflow is performed. Since the rotational speed is low, the overflowing washing water is mainly sprayed downward in the outer space. That is, cleaning of the lower side of the outer space can be effectively performed. In the intermediate stand-by step, the overflow state, the rotation state of the rotary tank, and the rocking state of the drip tray are stable because the rotational speed is maintained.

In this way, in the second washing step, shower washing is performed in which the rotational speed is increased to a higher second rotational speed and overflow is performed, so the overflowing washing water is mainly sprayed upward toward the outer space. That is, cleaning of the upper side of the outer space can be effectively performed. Accordingly, the entirety of the outer space in the vertical direction can be effectively cleaned.

In particular, in the washing step, when the amplitude of the water gutter tank exceeds a predetermined allowable value, an acceleration control process of stopping the rotational acceleration of the rotary tub is performed until the amplitude of the water gutter tank becomes below the allowable value. It is desirable to do

By doing so, the shaking is suppressed before the water gutter tank vibrates greatly, so that the generation of noise, vibration, and abnormal vibration, such as the washing machine toppling over, can be prevented.

In the preparation step, a hydrothermal treatment for heating the washing water to a predetermined temperature may be performed.

In this way, since the outer space can be heated and disinfected, the outer space can also be cleaned microbiologically in a clean state.

In that case, in the hydrothermal treatment, a process of correcting the temperature upward based on the outside air temperature around the water gutter tank may be performed.

In the case of shower washing, the temperature of the washing water tends to decrease, but by correcting the sterilization temperature upward based on the ambient air temperature around the drip tray, appropriate sterilization can be performed and a stable sterilization effect can be obtained.

According to the disclosed technology, it is possible to realize a vertical washing machine that is not only excellent in water saving but also functionally excellent.

For example, according to the first or second technique, functional drainage can be performed. According to the third technique, it is possible to efficiently and safely heat and circulate the washing water. According to the fourth technique, water can be stably circulated while maintaining an appropriate amount of water. According to the fifth technique, water can be effectively discharged by the hind wings of the pulsator. Therefore, efficient collection of lint can be realized. According to the sixth technique, it is possible to effectively clean the outside of the Holeless rotary tub without impairing the water-saving advantage.

Fig. 1 (first embodiment) is a schematic diagram showing a washing machine. In particular, the main structure inside the housing is shown.
2 is a block diagram of a control device and its main input/output device.
Fig. 3 is a schematic diagram showing the lower structure of the washing machine, particularly the drainage path.
4A is a schematic sectional view showing the structure of a water stop valve.
4B is a schematic perspective view showing a regulating portion of the water stop valve.
5 is a schematic diagram showing the structure of a drain valve.
Fig. 6 is a schematic diagram showing a state in a washing cycle;
7 is a schematic diagram showing a state in a rinsing cycle.
Fig. 8 is a schematic diagram showing a state in a dewatering step;
Fig. 9 is a schematic diagram showing a state at the time of bath washing.
10 is a schematic diagram showing another type of washing machine.
Fig. 11 (second embodiment) is a schematic diagram showing a washing machine. In particular, the main structure inside the housing is shown.
Fig. 12 is a schematic diagram showing the lower structure of the washing machine, particularly the drainage path.
Fig. 13 is a block diagram of a control device and its main input/output device.
Fig. 14 is a schematic diagram showing a state in a washing cycle;
15 is a schematic diagram showing a state in a rinsing cycle.
Fig. 16 is a schematic diagram showing a state in a dewatering step;
Fig. 17 is a schematic diagram showing a state at the time of bath washing.
Fig. 18 is a schematic diagram showing a washing machine of a first modified example.
Fig. 19 is a schematic sectional view showing the structure of the water stop valve in the first modified example.
Fig. 20 is a schematic diagram showing a washing machine of a second modified example.
21A is a schematic front view showing a switching valve in a second modified example.
Fig. 21B is a schematic side view showing the switching valve in the second modified example.
Fig. 22 is a schematic front view showing a switching valve in a third modified example.
23 is a schematic front view showing an on-off valve in a third modified example.
Fig. 24 (third embodiment) is a schematic cross-sectional view schematically showing the overall structure of the washing machine.
Fig. 25 is a schematic sectional view showing the overall structure of the washing machine in detail.
26 is a schematic diagram showing an enlarged lower structure of the washing machine.
27 is a schematic diagram showing a further enlarged lower structure of the washing machine.
Fig. 28 is a block diagram of a control device and its main input/output device.
Fig. 29 is a schematic perspective view of the gutter tank seen from below.
30 is a schematic perspective view showing the upper part of the drip tray.
Fig. 31 is a schematic view of the bottom of the rotating tub viewed from above.
Fig. 32 is a schematic view of the bottom of the gutter tank viewed from above.
Fig. 33 is a schematic view of the bottom of the gutter tank viewed from above in a state where the partition plate is removed.
Fig. 34 is a schematic perspective view of the partition plate seen from the inner surface side.
Fig. 35 is a schematic cross-sectional view seen along the line of arrow II in Fig. 33;
Fig. 36 is a schematic sectional view showing the structure of a drain for circulation.
Fig. 37 is a block diagram showing an interlocking control circuit.
Fig. 38 is a block diagram showing another interlocking control circuit.
Fig. 39 is a schematic cross-sectional view showing a discharge port during water circulation.
40 is a schematic sectional view showing a modified example of a discharge port.
41 is a schematic diagram showing an application example of a washing machine.
Fig. 42 (fourth embodiment) is a schematic cross-sectional view schematically showing the entire structure of a washing machine.
Fig. 43 is a block diagram of a control device and its main input/output device.
44 is an exploded perspective view showing the assembly of the drip tray and the rotary tub.
Fig. 45 is a schematic perspective view of the jaw cover viewed from above.
Fig. 46 is a schematic perspective view of the jaw cover viewed from below.
47 is a schematic top view of a balancer. In order to show the internal structure, a part is cut and shown.
Fig. 48A is a schematic cross-sectional view taken along the line of arrow XX in Fig. 47;
Fig. 48B is a schematic sectional view taken along the arrow YY line in Fig. 47;
Fig. 49 is a schematic diagram showing the state of the discharge port during water circulation.
50A is a schematic cross-sectional view showing a modified example of a balancer.
50B is a schematic cross-sectional view showing a modified example of a balancer.
50C is a schematic cross-sectional view showing a modified example of a balancer.
Fig. 51 (fifth embodiment) is a schematic sectional view schematically showing the overall structure of a washing machine.
Fig. 52 is a schematic perspective view of the pulsator as seen from obliquely upward.
Fig. 53 is a schematic perspective view of the pulsator viewed from below obliquely.
Fig. 54 is a schematic view seen from the direction of arrow V in Fig. 51;
Fig. 55 is a schematic cross-sectional view taken along the arrow VI-VI in Fig. 54;
56 is a schematic view of the pulsator viewed from above in the axial direction.
Fig. 57 is a graph showing the relationship between the aperture ratio (%) of the water passage and the change amount (mm) of the circulation water level.
58 is a graph showing the results of the lint collection test.
Fig. 59 (sixth embodiment) is a block diagram of a control device and its main input/output device.
60 is a schematic diagram showing the lower structure of the washing machine, particularly the drainage path.
61 is a flowchart showing the flow of the main processing of bath washing.
62 is a flowchart showing the flow of processing in shower washing.
63 is a schematic diagram showing a state in a certain process of bath cleaning.
64 is a schematic diagram showing a state in a certain process of bath cleaning.
65 is a schematic diagram showing a state in a certain process of bath cleaning.
66 is a flowchart showing the flow of acceleration control processing.

<First Embodiment>

1 shows a washing machine 1A to which the first technique is applied. This washing machine 1A is a type without a drainage pump that drains water by natural drainage by flowing water, and includes a housing 10, a drip tray 20, a rotary tub 30, a pulsator 40, and a driving device. (50) and so on.

The housing 10 is shaped like a vertically long rectangular box, and is formed by combining panels, resin members, and the like. A top cover 11 is attached to the upper surface of the housing 10, and an inlet 12 for loading and unloading laundry is formed in a large area on the front side of the top cover 11. A lid 13 is swingably attached to a rear edge portion of the input port 12 in the top cover 11, and the lid 12 is opened and closed by the lid 13. A locking device 14 for locking the closed cover 13 when the washing machine 1A is operating is provided on the front edge of the inlet 12 in the top cover 11 .

In a portion of the top cover 11 on the rear side of the input port 12, a swollen portion 11a bulging upward is provided. On the front surface of the bulging portion 11a, an operating unit 15 is provided in which switches, touch panels, monitors, etc. operated by the user are disposed, and inside the bulging portion 11a, via the operating unit 15, A control device 60 for controlling the operation of each device of the washing machine 1A according to the user's instructions is provided.

The control device 60 is composed of hardware such as a processor, memory, and input/output device, and software such as a control program installed therein. The control device 60 controls driving of each device installed in the washing machine 1A based on input signals from various sensors or the like attached to the washing machine 1A. 2 shows the relationship between the control device 60 and its main input device and output device.

In the control device 60, a plurality of washing courses for washing are set, mainly including a washing process, a rinsing process, and a spin-drying process. By manipulating the operation unit 15, the user can arbitrarily select a washing course and perform a desired washing process. In particular, in this washing machine 1A, a tank washing course for cleaning the inside of the drip tray 20 and the outside of the rotary tub 30 is also set.

Above the rear part inside the housing 10, a water supply device 70 is installed. The water supply device 70 is constituted by a water supply connection pipe 71, a water supply valve 72, a water injection case 73, and the like. An upstream end of the water supply connection pipe 71 protrudes to the outside of the housing 10, and a water faucet or the like serving as a water supply source is connected thereto via a hose or the like. The water supply connection pipe 71 is provided with a water supply valve 72 opened and closed by a control device 60 . The downstream end of the water supply connection pipe 71 is connected to the water injection case 73 . In the watering case 73, a tray-shaped detergent input container 73a is detachably accommodated.

The drip tray 20 is a large container capable of storing water having a cylindrical shape with a bottom. Above the interior of the housing 10, elastically deformable suspensions 16 are provided at a plurality of locations. The drip tray 20 is supported inside the housing 10 in a rocking state by being suspended by these suspensions 16 . At the upper end of the water receiving tank 20, a tank cover 21 protruding inward in a flange shape is installed. The water injection case 73 is arranged so as to protrude above the opening of the rotary tank 30 across the top of the tank cover 21 so that water can be supplied to the inside of the rotary tank 30 .

The rotating tub 30 is accommodated inside the drip tray 20 . The rotating tub 30 is arranged concentrically with the drip tray 20 and is configured to be rotatable around a longitudinal axis J extending in the vertical direction. Therefore, this washing machine 1A is a vertical washing machine.

The rotary tub 30 has a cylindrical body member 31 provided with a bottom capable of storing water independently from the drip tray 20 . That is, no hole is formed in the lower part or the middle part of the peripheral wall of the body member 31 to communicate with the inside and outside, and only in the upper end of the body member 31, a plurality of A dewatering hole 32 is formed over the entire circumference (holeless). In addition, since it only needs to overflow from the top of the trunk member 31, the plurality of dewatering holes 32 are not essential. The fuselage member 31 is made of a stainless steel plate or the like.

Laundry is put into the rotary tub 30 through the inlet 12, and each washing process consisting of a series of steps such as washing, rinsing, and spin-drying is performed while the laundry is stored in the rotary tub 30. It is done. An upper edge portion of the fuselage member 31 is provided with a ring-shaped balancer 33 along the edge.

As shown in FIG. 3 , a through shaft hole 34 is formed in the center of the bottom of the body member 31 . A first shaft 81 extending along the longitudinal axis J protrudes into the inside of the body member 31 through the shaft hole 34 . Between the shaft hole 34 and the first shaft 81 is sealed watertightly by the seal structure 34a. A pulsator 40 is fixed to the protruding end of the first shaft 81. The pulsator 40 is a disk-shaped member having an agitating function, and on its upper surface, a plurality of wings protruding from the center toward the outer periphery are radially provided.

The bottom of the fuselage member 31 is fixed to the projecting end of the second shaft 82 provided coaxially with the first shaft 81 . The first shaft 81 and the second shaft 82 are integrated as the shaft unit 80 and are configured to be rotatable independently of each other.

A flange shaft 35 is provided on the back surface (outer side) of the bottom of the torso member 31 . The strength of the bottom of the rotating tub 30 is reinforced by the flange shaft 35 . An outlet 36 is formed in the flange shaft 35, and the outlet 36 is opened around the shaft hole 34 in the bottom of the fuselage member 31.

A seal ring 37 is provided below the flange shaft 35, and an axial hole 37a is formed through the center thereof. The shaft unit 80 is arranged so as to penetrate vertically through the shaft hole 37a, and the flange shaft 35 and the seal ring 37 are fixed to the fuselage member 31 to secure the second shaft 82. is penetrating Around the shaft hole 37a in the flange shaft 35 and the seal ring 37, a water passage port 38 is opened.

A seal holder 22 is provided on the surface (inner side) of the bottom of the water gutter tank 20 so as to cover and attach to the surface. The inner space of the bottom of the drip tray 20 is partitioned by the seal holder 22, and the water conduction path 91 is formed therein. The water conduction path 91 communicates with the water passage 38 . At the upper center of the seal holder 22, a seal opening 23 for rotatably receiving the seal ring 37 is formed. Between the seal ring 37 and the seal opening 23, an oil seal 23a seals watertightly.

At the center of the bottom of the drip tray 20, a penetrating shaft hole 24 is formed. The shaft unit 80 protrudes in a rotatable state to the outside of the drip tray 20 via the water guide path 91 and this shaft hole 24 . Between the shaft hole 24 and the shaft unit 80 is sealed watertightly by an oil seal 24a.

A driving device 50 is installed on the back surface of the bottom of the drip tray 20 . Further, on the back surface of the bottom of the drip tray tank 20, an acceleration sensor 25 that detects the amount of shaking of the drip tray tank 20 and outputs it to the controller 60 is also provided. The driving device 50 is composed of a motor 51, a switching mechanism 52, and the like, and its operation is controlled by a control device 60. The drive device 50 is also provided with a rotation sensor 53 (usually built into the motor 51) that detects the rotation speed of the motor 51 and outputs it to the control device 60.

The shaft unit 80 protruding from the bottom of the drip tray 20 is connected to the output shaft 51a of the motor 51 via a switching mechanism 52 . The switching mechanism 52 has a built-in clutch 52a, and the control device 60 controls the clutch 52a so that the first shaft 81 and the second shaft 82 are connected to the output shaft 51a. It is possible to switch between a connected first connected state and a second connected state where only the first shaft 81 is connected to the output shaft 51a.

Accordingly, among the cycles performed during washing, for example, in the spin-drying cycle, the rotating tub 30 and the pulsator 40 rotate integrally by entering the first connected state. In the washing cycle or the rinsing cycle, by entering the second connected state, the rotating tub 30 does not rotate, and the pulsator 40 rotates while being reversed.

(drainage path)

A first drain port 26 facing the inner space of the drip tray tank 20 and a second drain port 27 facing the water conduction path 91 are opened at the bottom of the drip tray tank 20 . In addition, a third drain port 28 is opened on the upper side of the drip tray 20. The second drain port 27 communicates with the outlet port 36 via the water conduction path 91 and the water passage port 38.

And, the first drain port 26 is connected to the upper end of the conduit (first path 92) extending downward from the bottom of the drip tray 20. The second drain port 27 is connected to the upper end of a conduit (second path 93) extending downward from the bottom of the drip tray 20 in parallel with the first path 92. A water level sensor 29 is installed in the second passage 93 via a ventilation pipe 29a.

The ventilation pipe 29a may be connected not to the second path 93 but to the water supply path 91 or the like. The water level sensor 29 detects the water level of the water accumulated in the rotary tub 30 based on the air pressure change in the ventilation pipe 29a and outputs it to the controller 60 . In this embodiment, an example in which water is introduced into the lower part of the vent pipe 29a has been shown, but an air trap may be provided at the lower part of the vent pipe 29a to prevent water from entering the vent pipe 29a. The third drain port 28 is connected to the upper end of a conduit (third passage 94) extending downward along the side surface of the gutter tank 20.

In the lower part of the housing 10, a conduit (fourth path 95) extending along the bottom of the inside of the housing 10 and having an end (hose connector 95a) protruding from the rear surface of the housing 10 to the outside is installed. has been A drain hose is connected to the hose connection port 95a, and drains naturally (drainage by flow) through the drain hose. And, to the upstream side of this fourth path 95, the lower ends of the first to third paths 92, 93 and 94 are connected. Specifically, the second path 93, the first path 92, and the third path 94 are connected sequentially from the upstream side.

Accordingly, water accumulating in the rotating tub 30 can be drained from the outlet 36 through the water supply path 91 , the second path 93 , and the fourth path 95 . Then, water accumulating in the gutter tank 20 can be drained from the first drain port 26 through the first path 92 and the fourth path 95. In addition, water exceeding the upper limit of the water storage capacity of the drip tray 20 may be drained from the third drain port 28 through the third path 94 and the fourth path 95.

Therefore, water accumulating in the rotary tank 30 or the drip tray 20 can be drained stably without overflowing from the drip tray 20 .

(exponential structure)

In this washing machine 1A, a water stop structure composed of a water stop valve 100 and a water drain valve 110 is provided in a drain path in order to stably accumulate water in the rotary tub 30 with a simple structure. The water stop valve 100 is installed in the middle of the first path 92, and the drain valve 110 is each of the first path 92 and the second path 93 in the fourth path 95. It is installed on the downstream side of the confluence. The water stop valve 100 is a float-type on-off valve that operates non-electrically depending on the drainage condition, and the drain valve 110 is a bellows-type on-off valve that is controlled by the control device 60 and operates electrically. am.

4A and 4B, the water stop valve 100 is shown. The first passage 92 is composed of a hard upper joint 92a, a flexible water stop hose 92b (an example of a soft member), and a hard lower joint 92c.

The upper joint 92a is integrally formed in a cylindrical shape with the bottom of the drip tray 20, and the lower joint 92c is integrally formed in a cylindrical shape with the fourth path 95. The upper joint 92a and the lower joint 92c are disposed at positions facing each other vertically. By inserting each of these upper joints 92a and lower joints 92c into the upper and lower openings of the water stop hose 92b, the water stop hose 92b extends in the vertical direction, and the upper joint 92a and lower joints It is connected to the joint 92c.

The water stop hose 92b constitutes the water stop valve 100, and a float 101 and upper and lower control portions 102a and 102b are provided therein. The float 101 is a plastic member in the shape of a hollow sphere, and is configured so that sufficient buoyancy is obtained. In addition, the material and structure of the float 101 may be any, as long as sufficient buoyancy is obtained. The outer diameter of the float 101 is set smaller than the inner diameter of the water stop hose 92b so that the inner flow path of the water stop hose 92b can be freely displaced. As long as a space in which the float 101 can be displaced up and down can be secured, the water stop hose 92b may be properly bent and disposed according to specifications.

The upper and lower limiting portions 102a and 102b regulate the displacement of the float 101 . As shown in Fig. 4B, the upper regulating portion 102a is formed in an annular flange shape protruding into the flow path. In contrast, the lower regulating portion 102b is formed in a convex shape protruding into the passage, and is formed in a part of the circumferential direction (one may be used). The inner diameters of the upper and lower limiting portions 102a and 102b are set smaller than the outer diameter of the float 101 . The upper and lower regulating portions 102a and 102b are integrally formed with the water stop hose 92b.

The thickness of the upper regulating portion 102a is set smaller than that of the lower regulating portion 102b so as to be easily elastically deformed (a1 < a2). Accordingly, when the float 101 floats, the upper regulating portion 102a adheres to the float 101 while being elastically deformed to close the flow path. When the float 101 descends, the lower regulating portion 102b comes into contact with the float 101 stably, and supports the float 101 in a state in which a flow path is opened between the surrounding regulating portions 102b. . It is preferable that the lower regulating portion 102b has a shape in which the float 101 does not deviate from the water stop hose 92b due to external force or water pressure.

These upper and lower limiting portions 102a and 102b may also have a function of regulating the insertion amount of the upper and lower joints 92a and 92c and preventing them from coming off. In addition, the flexible water stop hose 92b is interposed between the fluctuating drip tray 20 and the fixed fourth passage 95, and also functions to suppress vibration and noise generation. In addition, although not explained in detail, for the same reason, the second path 93 and the third path 94 are also relayed by flexible hoses. Since the float 101 and the upper and lower regulating portions 102a and 102b also contact elastically, it is also possible to prevent occurrence of abnormal noise due to the water stop valve 100.

5, the drain valve 110 is shown. The drain valve 110 is composed of a valve chest 111, a bellows 112, a valve body 113, a drive motor 114, and the like. The valve/chest 111 is interposed in the fourth passage 95 and constitutes a part of the passage. The valve/chest 111 has an inlet 111a opening on the upstream side of the flow path and an outlet 111b opening on the downstream side of the flow path. A valve port 111c is formed at a portion of the valve chest 111 facing the inlet 111a.

Through this valve port 111c, a valve body 113 having a valve 113a at its tip is slidably disposed toward the inlet 111a. A bellows 112 is installed in the valve chest 111 so as to close the valve port 111c. The valve element 113, together with the bellows 112, is slid by the operation of the driving motor 114, and is displaced from a closed position that closes the inlet 111a and an open position that opens the inlet 111a. The operation of the drive motor 114 is controlled by the control device 60 .

(Operation of washing, drainage)

Prior to the washing operation, the user puts laundry into the rotary tub 30 and puts detergent into the detergent input container 73a. When the lid 13 is closed, the lid 13 is locked. In this way, when the user operates the operation unit 15 and a certain washing course is instructed, the control device 60 controls the water supply valve 72, the driving device 50, and the like, and the series of washing courses is displayed. run the processing Here, the contents of the washing process, the rinsing process, and the spin-drying process constituting each washing course, and the structure of drainage performed in these processes will be described in detail.

When the washing process starts, the control device 60 opens the water supply valve 72 while the drain valve 110 is closed. As a result, as shown in FIG. 6 , tap water (also simply referred to as water) flows into the water supply device 70 and water is supplied to the rotary tub 30 . At that time, detergent is also supplied to the rotary tub 30 together with water. Since the water supplied to the rotary tub 30 accumulates in order from the lower side of the body member 31, it flows down from the outlet 36 and passes through the water conduction path 91 and the second path 93 to the fourth path. (95).

However, since the drain valve 110 is closed, water does not flow into the fourth passage 95 . As a result, water gradually accumulates in the first path 92, the second path 93, and the ventilation pipe 29a. In this way, when the water level rises, the float 101 of the water stop valve 100 of the first passage 92 floats up and adheres to the upper regulating portion 102a, closing the flow path of the first passage 92 and do. That is, the inflow of water into the water receiving tank 20 is prevented.

In addition, by supplying water to the rotating tub 30, the water level in the second path 93 (also the water supply path 91 and the rotating tub 30) and the ventilation pipe 29a, excluding the first path 92, is increased. going up In this way, when the water levels in the rotating tub 30 and the ventilation pipe 29a reach a predetermined level, the controller 60 stops water supply based on the detection value of the water level sensor 29.

The control device 60 controls the driving device 50, switches the switching mechanism 52 to the second connected state, and drives the motor 51 based on the detection value of the rotation sensor 53 to rotate, The jaw 30 is not rotated, and the pulsator 40 is rotated forward and reverse for a predetermined time. In this way, washing processing is executed.

After the washing treatment is finished, drainage treatment is performed, and the control device 60 opens the drain valve 110 . Accordingly, water collected in the rotating tub 30 is drained. As the water level decreases, the float 101 of the water stop valve 100 also descends, and when the water level drops below the lower regulating portion 102b, the float 101 is supported by the lower regulating portion 102b. Accordingly, the passage of the first path 92 is also opened.

Next, when the rinsing process starts, the control device 60 closes the drain valve 110 and opens the water supply valve 72 similarly to the washing process. As a result, water flows into the water supply device 70 and is supplied to the rotary tub 30 so that the water is stored. As shown in FIG. 7 , when a predetermined amount of water accumulates in the rotating tub 30 , the controller 60 controls the driving device 50 to rotate the pulsator 40 forward and reverse.

The rinsing treatment is usually performed with an amount of water that does not overflow, but there are cases where the rinsing treatment is performed with an overflowing amount of water or pouring water. 7 shows that case. In that case, when the water level of the water accumulating in the body member 31 rises, the water overflows from the dewatering hole 32 . The water overflowing from the dewatering hole 32 is stored in the drip tray 20 (the first path 92 is water-stopped by the water stop valve 100).

Water supply is performed within a range that does not exceed the upper limit of the water storage in the drip tray 20 . Even if an amount of water exceeding the upper limit of the water storage tank 20 is supplied due to a failure of the water supply valve 72 or the like, it can be drained through the third drain port 28 and the third path 94. Therefore, there is no fear of water leakage to the outside of the drip tray 20 and causing trouble such as failure of the electrical system.

After the rinsing process is finished, drainage processing is performed similarly to the washing process, and the control device 60 opens the drain valve 110 . Accordingly, in a state where the water in the water receiving tank 20 is still, the water accumulated in the rotating tub 30 or the third path 94 is drained. In this way, when the head pressure of the water accumulated in the drip tray 20 becomes higher than the water pressure of the water accumulated in the rotary tank 30 and the like and the buoyancy of the float 101, the float 101 descends, and the first path 92 It is opened and drainage of the water stored in the drip tray 20 starts. Accordingly, the water accumulated on both sides of the rotary tub 30 and the drip tray 20 is sequentially drained.

Next, when the dehydration process starts, the control device 60 controls the drive device 50 with the drain valve 110 open, and the rotating tub 30 and the pulsator 40 rotate integrally. To do so, the switching mechanism 52 is switched to the first connected state. In this way, as shown in Fig. 8, the motor 51 is driven to rotate the rotating tub 30 or the like at a higher speed than the washing cycle or the rinsing cycle. Under the action of the centrifugal force, the water contained in the laundry rises along the inner surface of the trunk member 31 and overflows from the spin-drying hole 32 . The water overflowing from the dewatering hole 32 flows down to the bottom of the drip tray 20, and flows through the first drain port 26, the first path 92 (the water stop valve 100 is open), and the fourth path. Drained through (95).

When the predetermined time elapses, the control device 60 stops driving the motor 51 and ends the spin-drying process. When the spin-drying cycle is finished, the user is notified of the suspension of operation by a buzzer or the like, and at the same time, the lid 13 is unlocked, and the user can take out the laundry from the rotary tub 30.

(Jo Sejeong)

Like this washing machine 1A, when the rotary tub 30 can store water independently, the outer space (outer space) of the rotary tub 30, such as the inner wall surface of the drip tray 20 or the outer wall surface of the rotary tub 30 In (39)), water hardly accumulates. For this reason, the outer space 39 of the rotating tub 30 tends to be in an unsanitary state due to the accumulation of dirt or the occurrence of mold. For the user, it is desirable that the outer space 39 of the rotating tub 30 is also hygienic. Therefore, an operating course for washing the outer space 39 may be set for the washing machine 1A. Next, an example of the bath washing course is shown.

Prior to bath washing, the user puts detergent into the detergent input container 73a. When the lid 13 is closed, the lid 13 is locked. When the user operates the operation unit 15 and instructs a bath washing course, the control device 60 starts the bath washing process.

When the bath washing is started, the control device 60 opens the water supply valve 72 with the drain valve 110 closed, similarly to the washing process. As a result, water flows into the water supply device 70 and is supplied to the rotary tub 30 . At that time, the cleaning agent is also supplied to the rotating tub 30 together with the water, and is stored in the rotating tub 30. Then, as shown in FIG. 9 , when the rotary tub 30 is filled with water, the water overflows through the dewatering hole 32 . As a result, the overflowing water is stored in the drip tray 20 after that.

In this way, water is supplied until a sufficient amount of water also accumulates in the drip tray 20, that is, to an extent exceeding the upper limit of the water storage in the drip tray 20. The control device 60 controls the drive device 50 to forward and reverse the pulsator 40 . The pulsator 40 and the rotating tub 30 may be rotated at a low speed. As a result, the washing water can be stirred, and the outer space 39 of the rotary tub 30 can be cleaned efficiently. Even if the washing water is greatly undulated in the outer space 39 of the rotary tank 30 by the stirring action, it can be drained through the third drain port 28, so there is no fear of overflowing to the outside of the drip tray 20. Alternatively, so-called immersion washing may be performed without driving the driving device 50 .

In this way, when the predetermined time has elapsed, the control device 60 opens the drain valve 110 to drain the washing water. It is preferable to rinse the inside of the rotary tub 30 by performing a rinse cycle after draining the washing water.

<Example 1 of Modification>

10 shows another type of washing machine 1B to which the first technique is applied. The basic structure of this washing machine 1B is the same as that of washing machine 1A. Therefore, the same code|symbol is used for the same member, the description is abbreviate|omitted, and a different structure is mainly demonstrated.

This washing machine 1B has a different index structure from washing machine 1A. That is, in this washing machine 1B, each of the first path 92 and the second path 93 has a first on-off valve 121 and a second on-off valve that are opened and closed under the control of the controller 60 ( 122) is installed. The drain valve 110 is not installed in the fourth passage 95.

Both the first on-off valve 121 and the second on-off valve 122 have the same structure, and a bellows-type on-off valve similar to the drain valve 110 is used. The control device 60 controls each of these 1st on-off valve 121 and 2nd on-off valve 122 independently.

Therefore, when water is stored in the rotating tub 30, the first on-off valve 121 is closed, and when water is stored in the outer space 39, the second on-off valve 122 is closed. do. By control, drainage of each of the rotary tank 30 and the water receiving tank 20 can be made free.

<Second Embodiment>

11 and 12 show a washing machine 1C to which the second technique is applied. 13 shows the relationship between the control device 60 of the washing machine 1C and its main input device and output device.

This washing machine 1C is a type that drains water with a drain pump. The basic structure of this washing machine 1C, such as the housing 10, the drip tray 20, the rotary tub 30, the pulsator 40, and the driving device 50, is the same as that of the washing machine 1A. Therefore, the same code|symbol is used for the same member, the description is abbreviate|omitted, and a different structure is mainly demonstrated.

(drainage path)

A first drain port 26 facing the inner space of the drip tray tank 20 and a second drain port 27 facing the water conduction path 91 are opened at the bottom of the drip tray tank 20 . The second drain port 27 communicates with the outlet port 36 via the water conduction path 91 and the water passage port 38.

And, the first drain port 26 is connected to the upper end of the conduit (first path 92) extending downward from the bottom of the drip tray 20. The second drain port 27 is connected to the upper end of a conduit (second path 93) extending downward from the bottom of the drip tray 20 in parallel with the first path 92. A water level sensor 29 is installed in the second passage 93 via a ventilation pipe 29a. The water level sensor 29 detects the water level of the water accumulated in the rotary tub 30 and outputs it to the controller 60 .

In the lower part of the housing 10, a conduit (third path 94) extending along the bottom of the inside of the housing 10 and having an end (hose connection port 94a) protruding from the rear surface of the housing 10 to the outside. is installed. In the middle of the third path 94, a drain pump 150 is installed. The drain pump 150 is driven by the control of the control device 60 . The third path 94 on the downstream side of the drain pump 150 is formed integrally with the drain pump 150 . To the hose connection port 94a integrally formed with the drain pump 150, a drain hose 96 lifted up to a position higher than a predetermined water level (usually, the upper limit water level of the drip tray) of the water in the drip tray is connected. there is.

Accordingly, in this washing machine, natural drainage (drainage by flowing water) cannot be performed, and the drainage pump 150 operates to forcibly drain water. Then, the lower ends of the first and second paths 92 and 93 are connected to sites on the upstream side of the drain pump 150 in the third path 94 . In other words, the second path 93 and the first path 92 are connected in parallel to the third path 94 in order from the upstream side, and the downstream side of the junction of these paths 92 and 93 The drainage pump 150 is installed in the.

Accordingly, water accumulating in the rotating tub 30 can be drained from the outlet 36 through the water supply path 91 , the second path 93 , and the third path 94 . Then, the water accumulated in the drip tray 20 can be drained from the first drain port 26 through the first path 92 and the third path 94.

Therefore, the water accumulated in the rotary tank 30 and the drip tray 20 can be drained individually, and these two drain paths 92 and 93 exist on the upstream side of the drain pump 150. . Therefore, as long as both drain paths 92 and 93 are not blocked, an excessive load is not applied to the drain pump 150 . Accordingly, it is possible to stably drain water even in a drain path in which forced drain is performed by the drain pump 150 .

(exponential structure)

In this washing machine 1C, in order to stably accumulate water in the rotating tub 30 with a simple structure, the above-described water stop valve 100 (see FIGS. 4A and 4B) and a drain pump ( 150) is installed. The water stop valve 100 is installed in the middle of the first path 92 . The water stop valve 100 is a float-type on-off valve that operates non-electrically according to the drainage condition. Therefore, the water stop valve 100 is excellent in durability because there is no need for complicated electrical control and there is almost no failure or the like.

(Operation of washing, drainage)

In this washing machine 1C, when the washing process starts, the control device 60 opens the water supply valve 72. As a result, as shown in FIG. 14 , tap water (also simply referred to as water) flows into the water supply device 70 and water is supplied to the rotary tub 30 . At that time, detergent is also supplied to the rotary tub 30 together with water. Since the water supplied to the rotary tub 30 accumulates in order from the lower side of the body member 31, it flows down from the outlet 36 and passes through the water conduction path 91 and the second path 93 to the third path. It flows into (94).

Since the drain hose 96 is lifted up to a position higher than the water level of the drip tray, the water flowing into the third path 94 is not drained. For this reason, water gradually accumulates in the first path 92, the second path 93, and the ventilation pipe 29a. In this way, when the water level rises, the float 101 of the water stop valve 100 of the first passage 92 floats up and adheres to the upper regulating portion 102a, and the flow path of the first passage 92 is closed. is indexed That is, the inflow of water into the water receiving tank 20 is prevented.

In addition, by supplying water to the rotating tub 30, the water level in the second path 93 (also the water supply path 91 and the rotating tub 30) and the ventilation pipe 29a, excluding the first path 92, is increased. going up In this way, when the water levels in the rotating tub 30 and the ventilation pipe 29a reach a predetermined level, the controller 60 stops water supply based on the detection value of the water level sensor 29.

The control device 60 controls the driving device 50, switches the switching mechanism 52 to the second connected state, and drives the motor 51 based on the detection value of the rotation sensor 53 to rotate, The jaw 30 does not rotate, and the pulsator 40 is rotated forward and reverse for a predetermined time. In this way, washing treatment is executed.

After the washing treatment is finished, drainage treatment is performed, and the control device 60 drives the drainage pump 150 continuously or intermittently for a predetermined period of time. Accordingly, the water accumulated in the rotating tub 30 is forcibly drained. As the water level decreases, the float 101 of the water stop valve 100 also descends, and when the water level drops below the lower regulating portion 102b, the float 101 is supported by the lower regulating portion 102b. Accordingly, the passage of the first path 92 is also opened.

Next, when the rinsing process starts, the control device 60 opens the water supply valve 72 similarly to the washing process. As a result, water flows into the water supply device 70 and is supplied to the rotary tub 30 so that the water is stored. As shown in FIG. 15 , when a predetermined amount of water accumulates in the rotating tub 30 , the controller 60 controls the driving device 50 to rotate the pulsator 40 forward and backward.

The rinsing treatment is usually performed with an amount of water that does not overflow, but there are cases where the rinsing treatment is performed with an overflowing amount of water or pouring water. 15 shows that case. In that case, when the water level of the water accumulating in the body member 31 rises, the water overflows from the dewatering hole 32 . The water overflowing from the dewatering hole 32 is stored in the drip tray 20 (the first path 92 is water-stopped by the water stop valve 100). The control device 60 stops water supply and ends the rinsing process before the water accumulated in the drip tray 20 reaches the upper limit water level of the drip tray 20 .

After the rinsing process is finished, drainage process is performed similarly to the washing process, and the control device 60 drives the drainage pump 150 . Accordingly, while the water in the drip tray 20 is in a stagnant state, the water stagnant in the rotary tub 30 is drained. In this way, when the head pressure of the water accumulated in the drip tray 20 becomes higher than the water pressure of the water accumulated in the rotary tank 30 and the like and the buoyancy of the float 101, the float 101 descends, and the first path 92 It is opened, and drainage of the water stored in the drip tray 20 is started. As a result, the water stored in both the rotating tub 30 and the drip tray 20 is drained.

Next, when the dehydration process starts, the control device 60 controls the driving device 50 and first connects the switching mechanism 52 so that the rotating tub 30 and the pulsator 40 rotate integrally. switch to state In this way, as shown in Fig. 16, the motor 51 is driven to rotate the rotary tub 30 and the like at a higher speed than the washing cycle or the rinsing cycle. Under the action of the centrifugal force, the water contained in the laundry rises along the inner surface of the trunk member 31 and overflows from the spin-drying hole 32 . The water overflowing from the dewatering hole 32 flows down to the bottom of the drip tray 20, and flows through the first drain port 26, the first path 92 (with the water stop valve 100 open), and the third path. Through 94, it is forcibly drained by driving the drain pump 150.

When the predetermined time elapses, the control device 60 stops driving the motor 51 and ends the spin-drying process. When the spin-drying cycle is finished, the user is notified of the suspension of operation by a buzzer or the like, and at the same time, the lid 13 is unlocked, and the user can take out the laundry from the rotary tub 30.

(Jo Sejeong)

An example of the dish washing course in this washing machine 1C is shown. When bath washing starts, the control device 60 opens the water supply valve 72 similarly to the washing process. Accordingly, water flows into the water supply device 70 and is supplied to the rotary tub 30 . At that time, the cleaning agent is also supplied to the rotating tub 30 together with the water, and is stored in the rotating tub 30. Then, as shown in FIG. 17 , when the rotary tub 30 is filled with water, the water overflows through the dewatering hole 32 . As a result, the overflowing water is stored in the drip tray 20 after that.

In this way, water is supplied until a sufficient amount of water also accumulates in the drip tray 20, that is, to an extent exceeding the upper limit of the water storage in the drip tray 20. The control device 60 controls the drive device 50 to forward and reverse the pulsator 40 . The pulsator 40 and the rotating tub 30 may be rotated at a low speed. As a result, the washing water can be stirred, and the outer space 39 of the rotary tub 30 can be cleaned efficiently. Alternatively, so-called immersion washing may be performed without driving the driving device 50 .

<Example 1 of Modification>

18 shows a washing machine 1D to which the second technique is applied. The basic configuration of the washing machine 1D is the same as that of the washing machine 1C. Therefore, the same code|symbol is used for the same member, and the description is abbreviate|omitted, and another structure is demonstrated.

This washing machine 1D has a different index structure from washing machine 1C. That is, in this washing machine 1D, a bellows type water stop valve 110A is provided instead of the float type water stop valve 100.

19 shows the water stop valve 110A. The water stop valve 110A is composed of a valve chest 111, a bellows 112, a valve body 113, a coil spring 115, a drive motor, and the like. The valve/chest 111 is interposed in the first passage 92 and constitutes a part of the passage. The valve/chest 111 has an inlet 111a opening on the upstream side of the flow path and an outlet 111b opening on the downstream side of the flow path. A valve port 111c is formed at a portion of the valve chest 111 facing the outlet 111b.

Through this valve port 111c, a valve body 113 having a valve 113a at its tip is slidably disposed toward the outlet 111b. A bellows 112 is installed in the valve chest 111 so as to close the valve port 111c. The valve body 113, together with the bellows 112, is slid by the operation of the drive motor and displaces to a closed position blocking the outlet 111b and an open position opening the outlet 111b. The operation of the drive motor is controlled by the control device 60 .

<Example 2 of Modification>

20 shows a washing machine 1E to which the second technique is applied. The basic configuration of this washing machine 1E is also the same as that of washing machine 1C. Therefore, the same code|symbol is used for the same member, and the description is abbreviate|omitted, and another structure is demonstrated.

This washing machine 1E has a different index structure from washing machine 1C. That is, in this washing machine, the switch valve 160 is provided instead of the float type water stop valve 100.

The switching valve 160 is shown in FIG. 21A and FIG. 21B. The selector valve 160 is composed of a fixed valve body 161, a rotation valve body 162, a control motor 163, and the like. The fixed valve body 161 is made of a cylindrical member, and three flow passages 161a extending in the radial direction are formed through the member inward and outward at equal intervals (120 degree intervals) in the circumferential direction. there is. The fixed valve body 161 is installed at the junction of the first path 92, the second path 93, and the third path 94, and each of these paths 92, 93, and 94 is connected to each flow path. 161a is connected.

The rotational valve body 162 is made of a columnar member, and is accommodated inside the fixed valve body 161 so that rotation is possible. The rotational valve body 162 is formed with a V-shaped connection flow path 162a communicating with any two flow paths 161a and 161a of the fixed valve body 161 . The control motor 163 is connected to the rotation valve body 162, rotates the rotation valve body 162 according to the instructions of the control device 60, and arranges it in a predetermined position. Accordingly, the switching valve 160 has a first switching position at which the first route 92 and the third route 94 communicate with each other by the control motor 163, and the second route 93 and the third route. It is possible to switch to a second switching position for communicating 94 and a third switching position for communicating first route 92 and second route 93 .

During the washing cycle of this washing machine, the switching valve 160 is controlled to the second switching position so that the inside of the rotary tub 30 communicates with the third passage 94. Then, when the washing process is finished, the drain pump 150 is driven to perform the drain process while the selector valve 160 remains in place.

In the rinsing cycle, the switching valve 160 is controlled to the first switching position so that the inside of the drip tray 20 communicates with the third passage 94 . Then, the drainage pump 150 is driven to perform drainage processing while the switching valve 160 remains in place. Similarly to the dewatering process and the rinsing process, the drainage pump 150 is driven while the switching valve 160 is controlled to the first switching position so that the inside of the drip tray 20 communicates with the third passage 94. Drainage treatment is performed.

In the tank cleaning, the switching valve 160 is set to the third switching position (the inside of the rotary tank 30 and the inside of the drip tray 20 form a drainage path so that water flows into the rotary tub 30 and the drip tray 20). communicated through). In that way, water is stored in each of the rotating tank 30 and the water receiving tank 20 at the same water level by supplying water. Therefore, by detecting the water level with the water level sensor 29, the outer space 39 of the rotating tub 30 can be stably filled with water up to the upper limit.

When the bath washing is completed, the switching valve 160 is sequentially switched to each of the first switching position and the second switching position to discharge water. By doing so, the water accumulated on both sides of the rotary tub 30 and the drip tray 20 can be drained.

<Example 3 change>

22 shows a washing machine 1F to which the second technique is applied. The basic configuration of this washing machine is also the same as that of washing machine 1C. Therefore, the same code|symbol is used for the same member, and the description is abbreviate|omitted, and another structure is demonstrated.

This washing machine 1F also has a different index structure from washing machine 1C. That is, in this washing machine, the first on-off valve 171 and the second on-off valve 172 operated electrically are provided instead of the float-type water stop valve 100.

That is, in this washing machine, each of the first path 92 and the second path 93 is provided with a bellows-type first opening/closing valve 171 and a second opening/closing valve that are opened and closed under the control of the control device 60. A valve 172 is installed.

23 shows the first on-off valve 171 (because the first on-off valve 171 and the second on-off valve 172 have the same structure (different in the index direction), the second on-off valve 172 description omitted). The first on-off valve 171 is composed of a valve/chest 181, a bellows 182, a valve body 183, a drive motor 184, and the like.

The valve/chest 181 is interposed in the first passage 92 and constitutes a part of the passage. The valve/chest 181 has an inlet 181a opening on the upstream side of the flow path and an outlet 181b opening on the downstream side of the flow path. A valve port 181c is formed at a portion of the valve chest 181 facing the outlet 18lb.

Through this valve port 181c, a valve body 183 having a valve 183a at its tip is slidably disposed toward the outlet 181b. A bellows 182 is installed in the valve chest 181 so as to close the valve port 181c. The valve body 183, together with the bellows 182, is slid by the operation of the drive motor 184, and is displaced to a closed position that blocks the outlet 18lb and an open position that opens the outlet 18lb. The operation of the driving motor 184 is controlled by the control device 60 .

The control device 60 independently controls each of the first on-off valve 171 and the second on-off valve 172 while interlocking with the drain pump 150 . For example, when water is stored in the rotary tub 30 during a washing cycle or a rinsing cycle, the drain pump 150 does not operate, and the first on-off valve 171 and the second on-off valve 172 are closed. Closed. In the drainage treatment or the drainage process, the first on-off valve 171 and the second on-off valve 172 are opened. In this state, the drainage pump 150 is driven to perform drainage and dehydration.

When water is stored in the outer space 39 in order to perform tank cleaning or the like, the first on-off valve 171 so that the inside of the rotary tank 30 and the inside of the drip tray 20 are communicated. And the second on-off valve 172 is opened to supply water. In this way, the control device 60 interlocks with the drain pump 150 to control the opening and closing of the first opening/closing valve 171 and the second opening/closing valve 172, causing the drain pump 150 to fail. There is no water storage and drainage of the rotating tub 30 and the drip tray 20 can be freely performed.

<Third Embodiment>

24 and 25 show the overall structure of the washing machine 1G to which the third technique is applied. Fig. 24 schematically shows each constituent member of the washing machine for easy understanding, and Fig. 25 shows each constituent member of the washing machine in detail. 26 to 34 show each constituent member concretely shown. In addition, depending on the constituent member, it may be shown only in one of the drawings.

As shown in FIGS. 24 and 25, the washing machine 1G is composed of a housing 10, a drip tray 20, a rotating tub 30, a pulsator 40, a driving device 50, and the like. , Its basic configuration is the same as that of the above-described washing machine 1C (type with a drain pump). Therefore, the same code|symbol is used for the same member, the description is abbreviate|omitted, and a different structure is mainly demonstrated.

28 shows the relationship between the control device 60 of the washing machine 1G and its main input device and output device. The control device 60 is connected to each output device via a drive circuit 61 or a drive circuit 62, and for each output device, the control device 60 is connected to the drive circuit 61 or the drive circuit 62 It works by controlling

As shown in Fig. 29, the water receiving tank 20 is a large container capable of storing water having a cylindrical shape with a bottom. Above the interior of the housing 10, elastically deformable suspensions 16 are provided at a plurality of locations. The drip tray 20 is supported inside the housing 10 in a rocking state by being suspended by these suspensions 16 . At the upper end of the drip tray tank 20, a tank cover 21 protruding inward in a flange shape is provided (see also FIG. 30). The water injection case 73 is arranged so as to protrude toward the opening of the rotary tank 30 across the top of the tank cover 21 so that water can be supplied to the inside of the rotary tank 30 .

As shown enlarged in FIGS. 26 and 27, between the first shaft 81 and the second shaft 82 is sealed watertightly by an oil seal 34a. The bottom of the fuselage member 31 is fixed to the projecting end of the second shaft 82 provided coaxially with the first shaft 81 . The first shaft 81 and the second shaft 82 are integrated as the shaft unit 80 and are configured to be rotatable independently of each other.

A flange shaft 35 is attached to the rear surface (outer side) of the bottom of the trunk member 31 via a seal member 35a. Further, the strength of the bottom of the rotating tub 30 is reinforced by the flange shaft 35 . Outflow ports 36 are opened at three places around the axial hole 34 in the bottom of the body member 31 (see also Fig. 31).

As also shown in FIG. 31 , on the surface (inner side) of the bottom of the torso member 31, a water conduction surface 201 that slopes downward from the outer circumferential side toward the center side is formed. And, the outlet 36 is opened at the lowermost part of these water conduction surfaces 201. Therefore, as shown by the white arrows in Fig. 27, the water accumulated in the rotary tub 30 is guided to these water dilution surfaces 201 and flows out from the outlet 36, making it difficult for residual water to occur.

In addition, the total opening area of these outlets 36 (sum of the three opening areas) is the cross-sectional area of each passage of the rotation-side water conduction path 90 in which these outlets 36 are continuous and the stationary-side water conduction path 91 described later. (cross-sectional area in the direction orthogonal to the flow path) is formed in a size larger than the minimum value. Therefore, drainage is not impaired by these outlets 36. The water accumulating in the rotary tub 30 is stably discharged from the outlet 36 to the downstream side.

A seal ring 37 is provided below the flange shaft 35, and an axial hole 37a is formed through the center thereof. The shaft unit 80 is arranged so as to penetrate vertically through the shaft hole 37a, the flange shaft 35 and the seal ring 37 are fixed to the fuselage member 31, and the second shaft 82 ) penetrates. Around the shaft hole 37a in the flange shaft 35 and the seal ring 37, a water passage port 38 is opened.

The flange shaft 35 and the seal ring 37 form a rotation-side guide passage 90 with a defined circumference below the bottom of the fuselage member 31 . The inside of the rotary tub 30 is communicated with the rotation-side guide passage 90 through the outlet 36 .

As shown also in FIG. 32, the surface (inner side) of the bottom of the water gutter tank 20 is provided with a partition plate 22 corresponding to a seal holder so that the surface is covered and attached. The inner space of the bottom of the drip tray 20 is partitioned off by the partition plate 22, and the fixed-side water conduction path 91 is formed therein. The rotation-side conduction path 90 communicates with the stationary-side conduction path 91 via the water passage 38 . At the center of the upper part of the partition plate 22, a seal opening 23 for receiving the seal ring 37 rotatably is formed. Between the seal ring 37 and the seal opening 23, an oil seal 23a seals watertightly. Details of the fixed-side conduction path 91 will be separately described later.

A driving device 50 is installed on the back surface of the bottom of the drip tray 20 . Further, an acceleration sensor 25 that detects the amount of shaking of the drip tray 20 and outputs it to the controller 60 is also installed at the bottom of the drip tray 20 . As shown in Fig. 26, in the driving device 50 of this embodiment, an inner rotor 202a and an outer rotor 202b are independently rotatably disposed inside and outside one stator 202c. It is composed of a motor 202, and its operation is controlled by a control device 60. The drive device 50 is also provided with a rotation sensor 53 that detects the rotation speed of the motor 202 and outputs it to the control device 60 .

The shaft unit 80 protrudes from the bottom of the drip tray 20 and is connected to the motor 202 . Specifically, the first shaft 81 is connected to the outer rotor 202b, and the second shaft 82 is connected to the inner rotor 202a. The first state in which the first shaft 81 and the second shaft 82 synchronize and rotate in the same direction by controlling the complex current supplied to the stator 202c by the control device 60, and the first shaft ( 81) is capable of switching to the rotating second state or the like.

Accordingly, among the cycles performed during washing, for example, in the spin-drying cycle, the rotating tub 30 and the pulsator 40 rotate in the same direction by entering the first state. In the washing cycle or the rinsing cycle, by entering the second state, the rotating tub 30 does not rotate, and the pulsator 40 rotates while being reversed. In the washing cycle or the like, there are also various combined states, such as that the rotating tub 30 and the pulsator 40 rotate in opposite directions at the same time.

(drainage path)

As shown in FIG. 24, at the bottom of the drip tray 20, a first drain port 26 facing the inner space of the drip tray 20 and a second drain port facing the fixed side water supply path 91 ( 27) and a third drain port 211 (circulation drain port) communicating with a circulation path 210 described later is open (see also FIG. 33). The second drain port 27 and the third drain port 211 open on the inner surface of the lower side of the fixed side water conduction path 91 and face the space therein. Accordingly, the second drain port 27 and the third drain port 211 are communicated with the outlet 36 through the fixed-side water passage 91, the water passage 38, and the rotation-side water passage 90. Accordingly, the water accumulated in the rotary tub 30 is introduced into the stationary-side water-supply passage 91 through the outlet 36 and the rotation-side water-supply passage 90, as indicated by the white arrows in FIG. It flows out from either the drain 27 or the third drain 211 .

In the lower part of the housing 10, a conduit (third path 94) extending along the bottom of the inside of the housing 10 and having an end (hose connection port 94a) protruding from the rear surface of the housing 10 to the outside. is installed. In the middle of the third path 94, a drain pump 150 is installed. The drain pump 150 is driven by the control of the control device 60 . To the hose connection port 94a, a drain hose 96 raised to a position higher than a predetermined water level (usually, the upper limit water level of the water gutter tank) is connected to the water gutter tank.

Accordingly, in this washing machine 1G, natural drainage (drainage by flowing water) cannot be performed, and the drainage pump 150 operates to forcibly drain the water. Then, the lower ends of the first and second paths 92 and 93 are connected to sites on the upstream side of the drain pump 150 in the third path 94 . In other words, the second path 93 and the first path 92 are connected in parallel to the third path 94 in order from the upstream side, and the downstream side of the junction of these paths 92 and 93 The drainage pump 150 is installed in the.

Accordingly, the water accumulated in the rotating tub 30 passes from the outlet 36 through the rotation-side water supply path 90, the fixed-side water supply path 91, the second path 93, and the third path 94. Drainage can be done. Then, the water accumulated in the drip tray 20 can be drained from the first drain port 26 through the first path 92 and the third path 94.

Therefore, the water accumulated in the rotary tank 30 and the drip tray 20 can be drained individually, and these two drain paths 92 and 93 exist on the upstream side of the drain pump 150. . Accordingly, it is possible to stably drain water even in a drain path in which forced drain is performed by the drain pump 150 .

(exponential structure)

In this washing machine 1G, a water stop structure consisting of a combination of a water stop valve 100 and a drain pump 150 is installed in a drain path in order to stably accumulate water in the rotary tub 30 with a simple structure. has been The water stop valve 100 is installed in the first passage 92 and opens and closes according to the drainage condition. The water stop valve 100 may be an electric on-off valve controlled by a control device, or a float-type on-off valve that operates non-electrically depending on the drainage condition.

(circular path)

As shown in FIG. 24 , a circulation path 210 for circulating water accumulating in the rotary tub 30 is provided so as to extend upward along the outer circumferential surface of the drip tray 20 . The third drain port 211 is connected to an end (lower end) of the circulation path 210 . 29, the circulation pump 212 whose driving is controlled by the control device 60 is installed on the back surface of the bottom of the water receiving tank 20, and is circulated so as to be located in the middle of the circulation path 210. A pump 212 is located. The circulation path 210 has, at its upper end, a discharge port 213 for returning water therein through an opening in the body member 31 .

As shown in FIG. 30 , the discharge port 213 is integrally formed with the tank cover 21 provided on the upper part of the drip tray tank 20 . A hose member 214 is connected between the circulation pump 212 and the outlet 213 . In this way, since the discharge port 213 of the circulation path 210 is integrally formed with the drip tray tank 20, even if the drip tray 20 fluctuates, the position between the discharge port 213 and the opening of the body member 31 Relationships don't change. Therefore, it is possible to stably return the circulating water into the body member 31.

The lower end of the circulation path 210 is connected to the third drain port 211 via a connecting member 215 that functions as both a sealing member and a foreign matter removing member.

Specifically, as shown in FIG. 36, the connecting member 215 is press-fitted into the third drain port 211 so that the outer surface adheres to the third drain port 211, and the lower end of the circulation path 210 It has a connection portion 215a that is press-fitted and the inner surface is brought into close contact with the end thereof, and a foreign matter intrusion prevention portion 215b that protrudes into the inside of the fixed-side conduction passage 91.

The connection part 215a is brought into close contact with the lower end of the third drain port 211 and the circulation path 210, so that the gap between them is blocked and sealing performance is ensured. In addition, as the foreign matter intrusion prevention part 215b protrudes into the fixed-side water supply passage 91, a restriction wall is formed to restrict foreign substances such as buttons from flowing into the third drain port 211. Therefore, entry of foreign substances into the circulation pump 212 can be prevented. Water flows into the third drain port 211 through the slit 215c opened at the side of the foreign matter intrusion prevention part 215b.

(fixed-side dioptric path)

The fixed-side water conduction passage 91 has a compact structure and is formed so that the cross section of the passage spreads along the bottom surface of the water receiving tank 20 so that circulating water can be efficiently heated.

Specifically, as shown in FIGS. 26, 33, and 35, on the bottom surface of the drip tray 20, a predetermined range from the central portion to the peripheral portion is Y-shaped when viewed from the longitudinal axis direction, A wide concave portion 220 is formed by entering into a small concave area. When the partition plate 22 shown also in FIG. 34 is installed on the bottom face of the drip tray tank 20, as shown in FIG. The fixed-side conduction path 91 is partitioned.

As shown in FIG. 33, the second drain port 27 and the third drain port (constituting the lower inner surface of the fixed side water conduction path 91) of the wide concave portion 220 are spaced apart on both sides of the outer circumferential side ( 211) is placed. As shown in FIG. 32, there is a seal opening 23 on the center side of the inner surface of the partition plate 22 (constituting the upper inner surface of the fixed side water supply passage 91), and the inner side of this seal opening 23 Water is introduced into the fixed-side water supply path 91 through the rotation-side water supply path 90 formed in the . Therefore, in the fixed-side conduction path 91, a flow is formed in the radial direction from the center side to the outer circumferential side. The fixed-side water conduction passage 91 is formed so that the cross section of the passage spreads thinly along the bottom surface of the drip tray 20 .

By using the wide bottom surface of the water receiving tank 20, a large channel cross section can be obtained even if it is thin. Since the fixed-side water conduction path 91 is thinly formed along the bottom surface of the drip tray 20, there is no waste of space. Therefore, the capacity of the water receiving tank 20 and the rotating tub 30 can be increased with respect to the housing, and size reduction can be achieved.

Inside the fixed-side water supply path 91, a heater 221 whose operation (heat generation) is controlled by the control device 60 spreads (extends along the inner space of the fixed-side water supply path 91). It is installed. The heater 221 is formed so that it can be efficiently accommodated in a wide and narrow space by repeatedly bending and flattening a microtubule-shaped heating element. The heater 221 is disposed in the center of the passage of the fixed-side water supply passage 91 via the support member 221a so as to be spaced apart from the bottom surface of the wide concave portion 220 and the partition plate 22 .

Metal heat shielding plates 222 are provided at portions opposite to the heater 221 on both the bottom surface of the wide concave portion 220 and the inner surface of the partition plate 22 . The heat shield plate 222 may be formed of stainless steel. In this way, not only is it resistant to rust, but also it is possible to suppress heat dissipation loss and obtain an excellent thermal insulation effect. Since the partition plate 22 or the like can be prevented from being excessively heated by the heat shield plate 222, deformation or the like can be prevented even if the partition plate 22 or the like is made of synthetic resin. A water temperature sensor 223 that detects the water temperature and outputs it to the controller 60 is provided near the heater 221 .

In this way, since the heater 221 is arranged so as to spread widely inside the flow path having a thin thickness, the circulating water can be efficiently heated even though it is a small space. A small amount of water can be heated to a high temperature in a short time.

(interlocked control circuit)

In this washing machine 1G, a circuit configuration has been devised to prevent co-heating of the heater 221 . That is, the circuit for controlling the driving of the circulation pump 212 and the heating of the heater 221 is interlocked with the heating of the heater 221 and the driving of the circulation pump 212, independently of the control of the control device 60. , When the heater 221 is heated, the circulation pump 212 is always driven (linked control circuit 230).

37 shows the configuration of the interlocking control circuit 230. As shown in FIG. 28 , the control device 60 is connected to the circulation pump 212 via a drive circuit 61 and is also connected to a heater 221 via a drive circuit 62 . The control device 60 is provided with a control circuit 233 that controls the first and second drive circuits 231 and 232 among these drive circuits 61 and 62, and the control circuit 233 controls these By opening and closing the driving circuits 231 and 232, driving of the circulation pump 212 and heating of the heater 221 are controlled.

In the interlocking control circuit 230, first to third opening and closing circuits 234, 235, and 236 are also disposed. Each of the driving circuits 231 and 232 and each of the opening and closing circuits 234, 235 and 236 are configured to open circuits when no current is applied (normally open).

The control circuit 233 is electrically connected to the circulation pump 212 via the first open/close circuit 234 . The first open/close circuit 234 is closed by closing the first drive circuit 231 . When the control circuit 233 closes the first driving circuit 231 , power is supplied to the circulation pump 212 and the circulation pump 212 is driven.

The control circuit 233 is further electrically connected to the heater 221 via a second switching circuit 235 and a third switching circuit 236 disposed on respective wires on the input side and output side of the electric power. . The 2nd opening-closing circuit 235 and the 3rd opening-closing circuit 236 are closed by closing the 2nd drive circuit 232. Between the circulation pump 212 and the first switching circuit 234 and between the second switching circuit 235 and the heater 221 are electrically connected and conduction.

When the control circuit 233 closes the second driving circuit 232 and the second opening/closing circuit 235 and the third opening/closing circuit 236 are closed, electric power is supplied to the heater 221 so that the heater 221 operates. heat up By closing the second switching circuit 235, power is supplied to the circulation pump 212 even if the first switching circuit 234 is not closed (even if the driving control of the circulation pump 212 is not performed), and the circulation pump (212) is driven. That is, when heating the heater 221, the circulation pump 212 is always driven.

Further, when the circulation pump 212 is not driving, the heater 221 may not be heated.

38 shows the configuration of the interlocking control circuit 230. The interlocking control circuit 230 is composed of a fourth open/close circuit 238, a third drive circuit 239, a fifth open/close circuit 240, a fourth drive circuit 241, and the like (all normally open).

The control circuit 233 is electrically connected to the circulation pump 212 through a fourth open/close circuit 238 and a third drive circuit 239 disposed on respective wires on the power input and output sides. The control circuit 233 is further electrically connected to the heater 221 via the fifth opening/closing circuit 240 . The fifth opening/closing circuit 240 is closed by closing the third drive circuit 239 . In the third drive circuit 239, a relay that is closed when power is supplied to the circulation pump 212 is built in, and as long as power is not supplied to the circulation pump 212, the control circuit 233 operates as a third drive circuit. Even if 239 is closed, the fifth switching circuit 240 cannot be energized.

When the control circuit 233 closes the fourth drive circuit 241, the fourth open/close circuit 238 is closed and power is supplied to the circulation pump 212, and the circulation pump 212 is driven. On the other hand, even if the control circuit 233 closes the third drive circuit 239, if power is not supplied to the circulation pump 212, the fifth open/close circuit 240 is not closed and the heater 221 is not heated. don't Only when power is being supplied to the circulation pump 212, the relay built in the third driving circuit 239 is closed so that the fifth switching circuit 240 can be energized, and the fifth switching circuit 240 It is closed and the heater 221 generates heat.

<Operation of washing machine (1G)>

Main driving operations of the washing machine 1G will be described. The basic driving operation of the washing machine 1G is the same as that of the washing machine 1C (type with a drain pump) described above. Roughly speaking, laundry or detergent is put in, the cover 13 is locked, and the control device 60 executes a series of processes based on the user's instructions. Here, a water drainage structure performed in a washing step constituting each wash course and the like will be briefly described, and a mechanism for heating and circulating water in the rotary tub 30 will be described in detail.

When the washing process starts, the control device 60 opens the water supply valve 72 . Accordingly, tap water (also simply referred to as water) flows into the water supply device 70 and water is supplied to the rotary tub 30 . At that time, detergent is also supplied to the rotary tub 30 together with water. Since the drain hose 96 is lifted to a position higher than the water level of the drip tray 20, the supplied water is not drained. In this way, when the water levels in the rotating tub 30 and the ventilation pipe 29a reach a predetermined level, the controller 60 stops water supply based on the detection value of the water level sensor 29.

The control device 60 controls the drive device 50 to switch to the second state and drives the motor 202 based on the detection value of the rotation sensor 53, so that the rotating tub 30 is not rotated. , and rotates the pulsator 40 forward and backward for a predetermined time. In this way, washing processing is executed. After the washing process is finished, drainage process is performed, and the controller 60 drives the drain pump 150 continuously or intermittently for a predetermined time according to the detection result of the water level sensor 29 . Accordingly, the water accumulated in the rotating tub 30 is forcibly drained. The rinsing process is also performed under the same control as the washing process.

When the dewatering step is started, the control device 60 controls the driving device 50 and switches to the first state so that the rotating tub 30 and the pulsator 40 rotate integrally. In this way, the motor 202 is driven to rotate the rotating tub 30 or the like at a higher speed than the washing cycle or the rinsing cycle. Under the action of the centrifugal force, the water contained in the laundry rises along the inner surface of the trunk member 31 and overflows from the spin-drying hole 32 . The water overflowing from the dewatering hole 32 flows down to the bottom of the drip tray 20, and flows through the first drain port 26, the first path 92 (with the water stop valve 100 open), and the third path. Through 94, it is forcibly drained by driving the drain pump 150.

When the predetermined time elapses, the control device 60 stops driving the motor 202 and ends the spin-drying process. When the spin-drying cycle is finished, the user is notified of the suspension of operation by a buzzer or the like, and at the same time, the lid 13 is unlocked, and the user can take out the laundry from the rotary tub 30.

(water circulation and heating)

In the washing process or rinsing process described above, circulation of washing water or rinsing water is performed as necessary. At that time, a process of heating the washing water or rinsing water to warm water is also performed as necessary. A washing process will be described in detail by taking an example.

When the washing process is started and the control device 60 stops water supply and rotates the pulsator 40 forward and reverse, the control device 60 drives the circulation pump 212 . Accordingly, the water collected in the rotary tub 30 is supplied to the discharge port 213 through the rotating side water passage 90, the fixed side water passage 91, and the circulation passage 210, as shown in FIG. Similarly, it is discharged from the discharge port 213 and returned from the opening of the rotating tub 30 into it.

Since the discharge port 213 is integrally installed in the drip tray tank 20, even if the drip tray 20 fluctuates due to the rotation of the pulsator 40, the position of the discharge destination does not fluctuate. It is possible to stably return water into the rotating tub 30 .

At this time, the control device 60 heats the heater 221 to warm the circulating washing water. As described above, since the interlocking control circuit 230 is installed, it is possible to prevent the heater 221 from being air-heated. The controller 60 adjusts the temperature of the circulating washing water to a predetermined temperature (for example, set according to the type of laundry or soil component) based on the detection value of the water temperature sensor 223. Heat the heater 221 until it reaches Thus, an excellent cleaning effect is obtained.

Heating of the heater 221 is performed concurrently with driving of the driving device 50 or alternately with driving of the driving device 50 . If performed simultaneously with driving the driving device 50, the circulating water can be heated, so that the temperature of the washing water can be raised in a well-balanced manner. Heating of the heater 221 and driving of the drive unit 50 require a large amount of electric power. Therefore, when it is difficult to operate simultaneously with the driving of the drive device 50, such as when the amount of power supplied is not sufficient, stable operation can be performed by performing the operation alternately.

Also in the rinsing step, the rinsing effect can be promoted by warming the rinsing water similarly to the washing step. In addition, if the water temperature is raised to a level capable of heat sterilization, it can be used for microbial purification treatment of the rotary tank 30 or the water receiving tank 20.

<Example of change>

In the third embodiment, the interlocking control circuit 230 is provided to prevent empty heating of the heater 221. However, in order to further improve safety, control to prevent empty heating may be performed.

Specifically, a program may be set so that the control device 60 can heat the heater 221 only when the water level in the rotating tub 30 is equal to or greater than a predetermined lower limit. In this way, as long as the water level sensor 29 does not malfunction or malfunction, the heater 221 can be prevented from being air-heated.

In addition, it is preferable to provide a pump operation check mechanism that detects the operating state of the circulation pump 212 and outputs it to the controller 60 . As a specific example of the pump operation check mechanism, a current sensor for detecting the driving current of the circulation pump 212 is installed to detect the driving state of the circulation pump 212, or a flow rate sensor is installed in the circulation path 210 to circulate water. It is possible to detect the state or the like. In this way, co-heating of the heater 221 due to a failure of the circulation pump 212 can be prevented.

Without providing the interlocking control circuit 230, the driving of the circulation pump 212 and the heating of the heater 221 may be individually operated and controlled based on the water temperature.

That is, the control device 60 sets a program to drive the circulation pump 212 only when the water temperature is equal to or higher than a predetermined set value, that is, a target optimum temperature. In doing so, first, the water in the fixed-side water supply passage 91 is heated by the heater 221, and when the water reaches a predetermined set value, the circulation pump 212 is driven. In this case, water is replaced even in the fixed-side water conduction passage 91 and the water temperature drops, so that the driving of the circulation pump 212 is stopped when the water temperature falls below a predetermined water temperature. And again, when the water in the fixed-side water supply passage 91 is heated and the water reaches a predetermined set value, the circulation pump 212 is driven. Since the circulation pump 212 is driven intermittently, power consumption can be suppressed. Excessive heating can also be suppressed.

As shown in FIG. 40 , the circulation path 210 may be configured integrally with the drip tray 20 . Specifically, the duct-shaped circulation path 210 is integrally formed on the side of the drip tray 20. Also in the jaw cover 21, the discharge port 213 is integrally configured so as to be connected to the circulation path 210. The circulation path 210 and the discharge port 213 are connected to the connecting portion by attaching a packing 245 to prevent water leakage and installing the tank cover 21 to the drip tray 20.

According to this circulation path 210, unlike the connection by the hose member 214, even if the drip tray 20 fluctuates, it does not come off.

Further, in the third embodiment, a washing machine in which water is circulated using the circulation pump 212 is exemplified, but the water may be circulated using the pulsator 40 .

41 shows an example thereof. A plurality of rear wings 2120 are provided radially on the back side of the pulsator 40 . Then, when the pulsator 40 rotates, the water on the back side of the pulsator 40 is pushed outward in the radial direction by the action of the rear blade 2120 . As a result, the center side of the back side of the pulsator 40 is depressurized. As a result, water in the stationary-side water-guide path 91 or the rotation-side water guide path 90 is drawn in and flows into the rotary tub 30 through the outlet 36.

Therefore, in this way, in addition to the water circulation by the circulation pump 212, the water in the rotary tub 30 can be heated and circulated only by rotating the pulsator 40. In this case, the circulation pump 212 or the circulation path 210 may be omitted.

In the third embodiment, a washing machine equipped with a drain pump was exemplified, but the third technique is also applicable to a washing machine without a drain pump, that is, a washing machine that drains naturally (drainage by flow). needless to say

<Fourth Embodiment>

42 shows the overall structure of the washing machine 1H of the fourth embodiment. 43 shows the relationship between the control device 60 of the washing machine 1H and its main input device and output device. The basic structure of the washing machine 1H, such as the housing 10, the drip tray 20, the rotating tub 30, the pulsator 40, and the driving device 50, is the same as that of the washing machine 1G. Therefore, the same code|symbol is used for the same member, the description is abbreviate|omitted, and a different structure is mainly demonstrated.

Inside the lid 13 of the top cover 11, as indicated by a phantom line, a hand-washing cylinder member 301 is swingably installed so that a small amount of laundry can be hand-washed. Together with the lid 13, when the cylinder member 301 bounces backward, the inlet 12 is opened, and laundry can be loaded and unloaded into the rotary tub 30.

The water supply device 70 is constituted by a first water supply connection pipe 71a, a second water supply connection pipe 7lb, a first water supply valve 72a, a second water supply valve 72b, a water injection case 73, and the like. there is. The upstream ends of the first water supply connection pipe 71a and the second water supply connection pipe 71b protrude outside the housing 10, and a water tap or a hot water supply device serving as a water supply source are attached to the hose. connected through the The 1st water supply valve 72a and the 2nd water supply valve 72b opened and closed by the control apparatus 60 are provided in the 1st water supply connection pipe 71a and the 2nd water supply connection pipe 71b, respectively. The downstream end of the first water supply connection pipe 71a and the second water supply connection pipe 71b is connected to the water injection case 73 .

As shown in the above-described FIG. 29, the gutter tank 20 includes a tank main body 20a having a cylindrical shape with a bottom capable of storing water, and a tank cover 21 installed at an upper end of the tank main body 20a. (The jaw cover 21 will be described separately later). The drip tray 20 is elastically supported inside the housing 10 in a rocking state by being suspended by these suspensions 16 . At the center of the bottom of the body member 31, a first shaft 81 extending along the longitudinal axis J protrudes into the inside of the body member 31. A pulsator 40 is fixed to the protruding end of the first shaft 81.

In addition, the drainage path, water stop structure, and circulation path of the washing machine 1H are the same as those of the washing machine 1G.

(Joe Cover)

45 and 46, the jaw cover 21 is shown. The jaw cover 21 is a member in the shape of a ring frame, and is substantially composed of a cylindrical peripheral wall portion 21a and a flange portion 2lb that annularly protrudes radially inward from the upper edge of the peripheral wall portion 21a. there is. An inlet portion 21c extending in a V shape toward the inside in the radial direction is formed on a part of the flange portion 21b. The discharge port 213 is integrally formed in the flange portion 21b by providing a tray-shaped inlet component 21d extending in a V-shape to the inlet component 21c. A hose connection portion 21e communicating with the discharge port 213 is formed on the side of the inlet configuration portion 21c.

As shown in FIG. 44, with the rotating tub 30 accommodated in the tub body 20a, the peripheral wall portion 21a is fixed to the upper end of the tub body 20a, and as shown in the above-described FIG. 30, Similarly, the jaw body 20a and the jaw cover 21 are integrated. As a result, the flange portion 2lb is in a state of protruding above the opening edge of the body member 31, and the gap between the jaw main body 20a and the opening of the body member 31 (diametrical gap) is the flange. It is covered by a branch (2lb). A hose member 214 is connected between the circulation pump 212 and the hose connection portion 21e of the discharge port 213 . The discharge port 213 is directed toward the central portion of the body member 31, and when the circulation pump 212 is driven and water is ejected from the discharge port 213, water is sprayed so as to spread toward the center of the body member 31.

(balancer)

47, 48A and 48B show the balancer 33. The balancer 33 of the fourth embodiment is a fluid balancer having a fluid inside, and has a mounting portion 331 and a balance adjusting portion 332 . The mounting portion 331 and the balance adjustment portion 332 are resin molded products.

The mounting portion 331 has a ring-shaped hollow frame portion 331a and a cylindrical fitting portion 331b extending below the ring-shaped hollow frame portion 331a. The mounting portion 331 is attached to the body member 31 in a state where the fitting portion 331b is fitted inside the body member 31 . The hollow frame portion 331a is provided with a cylindrical water stop rib 333 protruding upward from its upper end.

The balance adjustment unit 332 is made of a ring-shaped member, and an annular liquid chamber 332a partitioned into two inner and outer layers is formed inside. The balance adjustment part 332 is formed by butting a pair of upper and lower members, welding them, and bonding them together. Each liquid chamber 332a is filled with a predetermined amount of a fluid composed of high specific gravity antifreeze. At a plurality of locations in the circumferential direction of each liquid chamber 332a, flow restraints 332b and regulating ribs 332c protruding radially into the liquid chamber 332a are formed in order to suppress excessive fluid flow. .

The balance adjusting portion 332 is integrated inside the mounting portion 331 provided on the body member 31 by spin welding, vibration welding, or the like. In this way, if the balancer 33 is composed of the mounting portion 331 and the balance adjusting portion 332 and welded by spin welding, the balancer 33 and the fuselage member 31 can be integrated in a short time, so productivity can be improved. can help

The balance adjustment part 332 is provided with a cylindrical cover rib 334 projecting upward from its upper end. The cover rib 334 is disposed so as to oppose the stop rib 333 with a gap inside the stop rib 333 in the radial direction.

Since the rotary tank 30 is positioned within the drip tray 20, even if the drip tray 20 swings, the positional relationship between the body member 31, the balancer 33, and the flange portion 2lb does not change. . Therefore, the protruding ends of the cover rib 334 and the water stop rib 333 protruding above the balancer 33 can be located in the vicinity of the flange portion 2lb.

In particular, the protruding end of the cover rib 334 is close to the protruding end of the flange portion 2lb, and the gap (vertical gap) between the balancer 33 and the flange portion 2lb is formed by the cover rib 334. ) is blocked. Accordingly, when the rotating tub 30 rotates, laundry is prevented from being bitten into the gap.

Also in relation to the discharge port 213 provided in the flange portion 21b, the cover rib 334 is located immediately below the opening of the discharge port 213. The discharge port 213 protrudes radially inward from the water stop rib 333 and faces the inside of the rotary tub 30 .

In a plurality of locations in the circumferential direction between the body member 31 and the mounting portion 331, overflow passages 335 communicating from the lower space of the balancer 33 to the upper outer side of the body member 31 are provided. Specifically, as described above, dewatering holes 32 are formed in a plurality of places at the upper end of the body member 31 over the entire circumference, and these dehydration holes 32 are below the balancer 33. is located Then, an overflow path 335 extending upward from these dewatering holes 32 along the inner surface of the body member 31 and overflowing beyond the upper end of the body member 31 is formed between the body member 31 and the mounting portion. (331) are installed in a plurality of places in the circumferential direction.

In addition, water entering the annular groove formed between the stop rib 333 and the cover rib 334 is returned to the body member 31 at a plurality of places in the circumferential direction between the mounting portion 331 and the balance adjusting portion 332. A flowing path 336 is provided. Specifically, slit-shaped vertical holes penetrating up and down along the water stop ribs 333 as flow paths 336 are formed at a plurality of locations in the circumferential direction on the circumferential surface outside the radial direction of the balance adjusting section 332. is formed This vertical hole 336 communicates with the space between the water stop rib 333 and the cover rib 334 above the balancer 33 and the space below the balancer 33 .

<Operation of washing machine (1H)>

Among the main driving operations of the washing machine 1H, different points from those of the washing machine 1G will be described.

When the washing cycle is started, the controller 60 rotates the pulsator 40 and estimates the weight of the loaded laundry (dry condition) based on the load acting on the motor at that time. After that, the controller 60 opens the first water supply valve 72a or the second water supply valve 71b in a state where the rotary tub 30 or the pulsator 40 is rotated appropriately. Accordingly, tap water or hot water (also simply referred to as water) flows into the water supply device 70 and water is supplied to the rotary tub 30 . At that time, detergent is also supplied to the rotary tub 30 together with water.

In this way, when the water levels in the rotary tub 30 and the ventilation pipe 29a reach a predetermined level (set based on the estimated laundry weight), based on the detection value of the water level sensor 29, the control device (60) stops water supply.

During the washing process, the circulation pump 212 is driven, and the water collected in the rotary tub 30 is supplied to the outlet 213. As shown in FIG. 49 , water supplied to the discharge port 213 is ejected from the discharge port 213 so as to spread toward the center of the rotating tub 30 and is returned to the inside of the rotating tub 30 .

Since the discharge port 213 is integrally installed with the drip tray 20, it is possible to stably return water into the rotary tub 30. However, when the force of the water ejected from the discharge port 213 becomes weak, such as when the circulation pump 150 starts driving or stops, liquid sagging occurs, and as shown by fine arrows in FIG. 48A, the discharge port 213 The water that came out may enter the back side of the cover rib 334. If the water flows out into the drip tray 20, it does not return to the rotary tub 30, so the water in the rotary tub 30 gradually decreases and the washing performance deteriorates.

On the other hand, in this washing machine 1H, since the water stop rib 333 is provided, even if water enters the back side of the cover rib 334, outflow to the drip tray 20 can be prevented. Since a vertical hole 336 is provided between the water stop rib 333 and the cover rib 334, water does not accumulate between the water stop rib 333 and the cover rib 334. As shown, it can be returned into the rotating tub 30.

Since the vertical hole 336 is formed so as to follow the inside of the water stop rib 333, the water that is collected on the outer side in the radial direction by shaking is guided to the vertical hole 336 and smoothly flows into the rotating tub 30.

Since the amount of water entering the back side of the cover rib 334 is small, the channel cross-sectional area of the vertical hole 336 can be small, and the total channel cross-sectional area can be small, so it is only necessary to install a small portion of the balancer 33 in the circumferential direction. . Therefore, in order to form the vertical hole 336, it is not necessary to reduce the liquid chamber 332a of the balancer 33, and the function of the balancer 33 is not impaired.

When the spin-drying process starts, the rotary tub 30 rotates at high speed, and the centrifugal force causes the water contained in the laundry to rise along the inner surface of the body member 31 .

Since the balancer 33 is arranged at the upper end of the inner surface of the body member 31, the water that has risen is taken in by the balancer 33. Since a large number of dewatering holes 32 are formed below the balancer 33, the water that has risen overflows from these dewatering holes 32.

Some of the water collects in the lower corner of the balancer 33 (upper side of the draining hole 32), but in this washing machine 1H, an overflow path 335 is provided, indicated by a broken line arrow in FIG. 48A. As shown, such water can also overflow through overflow path 335 . The water that has risen can be overflowed without leaving, so the dewatering performance is excellent.

The water overflowing from the dewatering hole 32 flows down to the bottom of the drip tray 20, and flows through the first drain port 26, the first path 92 (with the water stop valve 100 open), and the third path. Through 94, it is forcibly drained by driving the drain pump 150.

<Example of change>

The structure of the balancer 33 can be appropriately changed according to specifications. Some examples of such changes are shown.

50A, the balancer 33A of the 1st modified example is shown. The balancer 33 of the fourth embodiment is composed of a plurality of members including the mounting portion 331 and the balance adjusting portion 332, but in this balancer 33A, the mounting portion 331 and the balance adjusting portion 332 are a single member It consists of (all-in-one). The integrated balancer has the advantage of having a small number of parts.

Since the structure attached to the fuselage member 31 is the same as that of the mounting portion 331, the overflow path 335 is also configured similarly to the balancer 33 of the fourth embodiment. On the other hand, since the flow passage 336 is integral, it is necessary to form a hole through the balancer 33 vertically. In order to form a hole, if the liquid chamber 332a is reduced, the function of the balancer 33 is impaired. Therefore, in this balancer 33, the flow path 336 is provided by forming a vertical hole penetrating vertically in the flow restraining portion 332b.

As described above, the passage cross-sectional area of the flow path 336 may be small and the total passage cross-sectional area may be small, so small-diameter vertical holes are formed in the plurality of flow restraining portions 332b. Therefore, if it is this modified example, even if it is an integrated balancer, the function equivalent to the balancer 33 mentioned above can be obtained.

50B shows the balancer 33B of the second modified example. This balancer 33B is also of the same integrated type as the first modified example, but the structure of the flow path 336 is different. That is, horizontal holes penetrating inside and outside are formed as flow passages 336 at a plurality of locations of the base portion of the cover rib 334 .

50C shows the balancer 33C of the third modified example. 33 C of this balancer is also integral, and the part corresponding to the cover rib 334 is abbreviate|omitted in order to form the flow path 336.

In the fourth embodiment, a washing machine provided with a drain pump was exemplified, but the fourth technique can also be applied to a washing machine without a drain pump, that is, a washing machine that drains naturally (drainage by flow).

The balancer is not limited to a fluid balancer, and may be a ball balancer. That is, instead of the fluid, a plurality of balls are accommodated inside so as to be able to circulate.

The water stop rib 333 and the cover rib 334 are not limited to the shape of a thin plate, but may have a protruding shape. The important thing is to be able to stop the water. The structure of the overflow path can also be appropriately changed according to specifications, similarly to the flow path.

<Fifth Embodiment>

51 shows the overall structure of the washing machine 1J of the fifth embodiment. The basic structure of the washing machine 1J, such as the housing 10, the drip tray 20, the rotating tub 30, the pulsator 40, and the driving device 50, is the same as that of the washing machine 1H. Therefore, the same code|symbol is used for the same member, the description is abbreviate|omitted, and a different structure is mainly demonstrated.

Although illustration is omitted, in the block diagram of the control device 60 of the washing machine 1J, the water temperature sensor 223 and the circulation pump 212 are omitted from the block diagram in FIG. 43 .

The inside of the torso member 31 is separated by the rotation of the laundry space 450 (upper space) where laundry is accommodated and processing such as washing is performed, with the pulsator 40 as the boundary, and the rotation of the pulsator 40 It is divided into a pump space 451 (lower space) that exerts a pump action.

A circulation path 460 communicating with the laundry space 450 and the pump space 451 is provided on the side of the body member 31 . A plurality of circulation passages 460 (two in this washing machine) are disposed in a shape facing each other with the vertical axis J interposed therebetween. On the side of the torso member 31, a lint filter 470 is further provided corresponding to each circulation path 460 (the circulation path 460 and the lint filter 470 will be separately described later).

(drainage path)

Since the washing machine 1J does not have a circulation path 210, at the bottom of the drip tray 20, the first drain port 26 facing the inner space of the drip tray 20 and the first drain port 26 facing the water passage 91 The second drain port 27 is open. The second drain port 27 is opened on the inner surface of the lower side of the water supply passage 91 and faces the space therein. Accordingly, the second drain port 27 communicates with the outlet 36 via the water supply passage 91 . Accordingly, the water accumulated in the rotary tub 30 is introduced from the outlet 36 to the water supply passage 91 and flows out from the second drain port 27 .

(Pulsator)

52 and 53 show the pulsator 40. The pulsator 40 is an injection molded product integrally formed of resin, and has a disk-shaped base 401 . At the center of the surface of the base 401, a cone-shaped boss 401a to which the first shaft 81 is fixed is formed. Further, on the surface of the base 401, a plurality of stirring blades 40lb (six in this pulsator 40) are formed so as to radially extend from the boss portion 401a.

Each stirring blade 40 lb is bulged from the surface of the base 401, has a cross section of a substantially inverted U shape to a substantially inverted V shape, and is formed so that the horizontal width gradually widens from the center side toward the outer circumferential side. there is. Between the two agitation blade parts 40lb and 40lb adjacent to each other, a flat surface part 401c with a substantially flat outer circumferential side is formed so as to spread. That is, this pulsator 40 is not cup-shaped but dish-shaped.

In each flat portion 401c, a group of water passage holes 402 penetrating the base 401 is formed (the water passage holes 402 will be described separately later). These water passage holes 402 are formed in such a size that small objects do not pass through, that is, foreign substances such as buttons included in laundry do not pass through. And the pitch between adjacent water passing holes 402 is set within the range which can ensure the required strength.

On the back surface of the base 401, a plurality of rear wings 403 are provided. Each hind wing 403 is made of a thin plate-like member and is radially arranged from the central boss 401a toward the outer circumference.

(circular path and lint filter)

54 and 55 show the structures of the circulation path 460 and the lint filter 470.

The bottom of the torso member 31 protrudes inward from the side. Accordingly, the outer periphery of the pulsator 40 and the bottom of the body member 31 are configured to approach each other through a small gap. That is, the inside of the fuselage member 31 is divided into a washing space 450 and a pump space 451 by the pulsator 40 .

A thin duct-like space (circulation path 460) extending upward in a band shape is formed in a predetermined range from the peripheral portion of the bottom portion of the body member 31 to the lower portion of the side portion. The lower opening (inlet 460a) of the circulation path 460 faces the pump space 451, and the circulation path 460 communicates with the pump space 451 through the inlet 460a. The upper opening (water outlet 460b) of the circulation path 460 faces the laundry space 450, and the circulation path 460 communicates with the laundry space 450 through the water outlet 460b.

The water outlet 460b has a rectangular shape with a large opening area and is formed on the inner surface of the body member 31. A lint filter 470 is detachably attached to the water outlet 460b. The lint filter 470 is composed of a support 470a having grid-shaped openings and a filter medium 470b (a coarse mesh that collects lint) provided on the support 470a. The lint filter 470 faces the washing space 450, and the circulation path 460 passes through the openings of the lint filter 470, specifically the filter medium 470b and the support 470a, to the washing space ( 450) is connected.

When the pulsator 40 rotates in a state where water is stored in the rotary tub 30, as indicated by arrows in FIG. is extruded into Since the circumference of the pump space 451 is partitioned, and the inlet 460a is arranged radially outward, the water extruded outward in the radial direction moves with great force from the inlet 460a to the circulation path 460. is introduced as As a result, the water introduced into the circulation path 460 is discharged from the water outlet 460b to the washing space 450 through the filter medium 470b.

Since the pump space 451 communicates with the laundry space 450 through the water passage hole 402, the water decreasing in the pump space 451 passes through the water passage hole 402 as indicated by an arrow in FIG. supplemented through

(arrangement of water holes, aperture ratio)

In this washing machine 1J, the arrangement and opening ratio of the water passage holes 402 are devised.

That is, a group of water passage holes 402 are arranged in a lattice shape in a region unevenly distributed on the center side of each flat part 401c except for the boss part 401a and the stirring wing part 40lb in the base 401, there is. In detail, as schematically shown in FIG. 56, the surface of the base 401 is concentric with the base 401, and its outer diameter D2 is 80% of the outer diameter D1 of the base 401. Water passage holes 402 of 92% or more of the total opening area are arranged in the flat portion 401c (area indicated by oblique lines) located inside the circular area having a size of .

That is, in the outer circumferential portion of the base 401, there are no water passage holes 402 formed, or very few water passage holes 402 are formed, and the water passage holes 402 are concentrated in the center. These water passage holes 402 send water from the washing space 450 to the pump space 451, which functions like a centrifugal pump (the outer circumferential side becomes relatively positive pressure and the central side becomes relatively negative pressure).

If the water passage hole 402 is formed on the outer circumference side, water is discharged from the water passage hole 402 on the outer circumference side, the amount of circulating water decreases, and the pump function is impaired. By introducing water into the pump space 451 from the center side, water can be smoothly introduced into the pump space 451 and the water can be smoothly discharged.

In detail, since the flow of water is formed by the rotation of the pulsator 40 in the pump space 451, the centrifugal force acts strongly on the flow of water from the center toward the outer circumference. Therefore, if a plurality of water passage holes 402 are also formed on the outer circumferential side of the pulsator 40, as shown by the broken line arrow in FIG. The phenomenon of water return occurs.

Also in the laundry space 450, the agitating action of the agitation blades 40lb of the pulsator 40 forms a flow of water rising along the inner wall of the rotary tub 30 from the center side toward the outer circumferential side. there is. As a result, the water returned to the laundry space 450 through the water passage hole 402 on the outer circumference side further moves away from the pump space 451, as indicated by the arrow of the broken line in FIG. Goes.

On the other hand, since the flow of water toward the pulsator 40 is formed in the center of the laundry space 450, the center of the upper part of the pulsator 40 tends to have a relatively positive pressure. In addition, negative pressure at the center of the pump space 451 is applied, so that water can be smoothly introduced into the pump space 451 .

If there is no water passage hole 402 on the outer circumferential side of the pulsator 40, since the outer circumferential side of the pump space can be maintained at a relatively positive pressure, water can be efficiently discharged to the circulation path 460.

For that purpose, it is preferable to form most of the water passage holes 402 inside a circular area where the outer diameter D2 has a size of 80% of the outer diameter D1 of the base 401. Even if there are some through holes outside the circular area, the function is not significantly impaired, so it is set to 92% or more of the total opening area.

By installing on the flat flat portion 401c orthogonal to the direction of rotation of the pulsator 40, it is possible to uniformly form a large number of water passage holes 402 through which water can be introduced into the pump space 451 with little resistance. . It is also advantageous in terms of easy molding. Even if there is laundry, it can be taken out with the agitating blade 40lb, so the water passage hole 402 is less likely to be clogged. Therefore, water can be stably introduced into the pump space 451 without fluctuating the amount of water.

Further, the water passage hole 402 may be formed on the side surface of the agitation blade section 401b so as to face the rotational direction. If so, water can be actively introduced into the pump space 451 by using the rotation of the pulsator 40 .

Furthermore, as a result of investigation by the present inventors, it was found that when the pump space 451 is in a substantially sealed state, the discharge performance varies depending on the opening ratio of the water passage hole 402, and there is an optimal condition. That is, with respect to the total area of the surface of the base 401 (so-called projected area) when the surface of the base 401 is viewed from the vertical direction, the total opening area of the water passage hole 402 in the circular area ( It is preferable that the ratio of the sum of the opening areas of each water passage hole 402 (open area ratio of the water passage hole 402) is within a range of 1.5 to 4.0%.

57 shows a graph showing the relationship between the aperture ratio (%) of the water passage hole 402 and discharge. The vertical axis is the amount of change (mm) of the water level rising in the circulation path 460 during circulation, and corresponds to discharge. The broken line is the case where there is a hole at the bottom of the rotary tank (there are many holes or gaps through which water can enter and exit freely around the pump space 451) (comparative example), and the solid line is the case of the holeless rotary tank ( Example). In both cases, other structures are the same as those of the washing machine 1J.

In the examples, the discharge also increased with the increase in the aperture ratio (%) of the water passage 402, but there was a peak around 2.8%, and thereafter a tendency for the discharge to decrease was observed.

Therefore, by setting the aperture ratio (%) of the water passage hole 402 within the range of 1.5 to 4.0% as described above, good discharge can be obtained and stable water circulation can be performed.

In relation to the arrangement of the water passage holes 402, in the range where the aperture ratio is 2.8% or more, a large number of water passage holes 402 are also arranged on the outer circumferential portion of the base 401. Therefore, it can be confirmed from FIG. 57 that discharge is reduced by arranging a large number of water passage holes 402 on the outer circumferential portion of the base 401 as described above.

<Operation of washing machine (1J)>

Among the main driving operations of the washing machine 1J, different points from those of the washing machine 1H will be described.

As the pulsator 40 rotates during the washing process, the water in the pump space 451 is discharged to the circulation path 460, and the water in the washing space 450 passes through the water passage hole 402 to the pump space 451. introduced into As a result, the water in the rotary tub 30 circulates through the circulation path 460, and at the same time, lint is collected by the lint filter 470. Therefore, compared to the case of simply stirring with the pulsator 40, washing performance is improved.

The rinsing process is also performed under the same control as the washing process. That is, with water stored in the rotary tub 30, the pulsator 40 is driven to rotate to agitate the laundry and collect lint by circulating the water. It is preferable to perform the rinsing process a plurality of times. Since water circulation and lint collection are performed by the rotation of the pulsator 40, the rinsing performance is also improved compared to the case of simply stirring with the pulsator 40.

<Collecting effect of lint>

Using a washing machine equivalent to the washing machine 1J, washing was performed under the same conditions, and a test was conducted in which the opening ratio of the water passage hole 402 was changed to collect lint. The test results are shown in FIG. 58 .

FIG. 58 shows the relationship between the aperture ratio (%) of the water passage 402 and the lint collection rate, and a change in the lint collection rate was found to be almost the same as that of discharge shown in FIG. 57 . That is, as the opening ratio (%) of the water passage hole 402 increased, the lint collection rate also increased, but there was a peak around 2.8%, and thereafter, a tendency for the lint collection rate to decrease was recognized.

Therefore, it was confirmed that it is preferable to set the aperture ratio (%) of the water passage hole 402 within the range of 1.5 to 4.0% also in order to collect lint satisfactorily.

<Example of change>

In the washing machine 1J, the circulation of water by the rear wing 403 of the pulsator 40 is used to collect lint, but it is not limited thereto. For example, instead of the lint filter 470, a slit-shaped or perforated water jetting spout may be provided at the top of the rotating tub, and circulating water may be rinsed from the water jetting spout into the inside of the rotating tub in the form of a shower.

Alternatively, a detergent inlet through which detergent can be injected may be attached to the circulation path 460 so that the detergent can be directly mixed with circulating water. Furthermore, a drug storage chamber capable of accommodating a disinfectant such as silver ions may be provided in parallel with the circulation path 460 so as to impart a disinfection effect to the circulating water.

A heater may be installed inside the pump space 451 . By doing so, washing water or rinsing water can be warmed up, so that cleaning properties are further improved.

In the fifth embodiment, a washing machine provided with a drain pump was exemplified, but the fifth technique can also be applied to a washing machine without a drain pump, that is, a washing machine that drains naturally (drainage by flow). It can also be applied to a washing machine having a drying function.

<Sixth Embodiment>

The sixth technique will be specifically described using the washing machine 1B shown in FIG. 10 . 59 shows the configuration of the control device 60 in the case where the sixth technique is applied to the washing machine 1B. Basic configurations of the housing 10, the drip tray 20, the rotary tub 30, the pulsator 40, and the drive unit 50 are the same as those of the washing machine 1B. Therefore, the same code|symbol is used for the same member, and the description is abbreviate|omitted, and the structure which differs according to the application of the 6th technique is demonstrated.

As shown in FIG. 60 , inside the seal holder 22, a heater 200 and a water temperature sensor 201 for detecting the internal temperature (water temperature) of the water conduction passage 91 are provided. Further, on the back surface of the bottom of the drip tray 20, there is an acceleration sensor 25 (vibration sensor) that detects the amount of shaking of the drip tray 20 in a plurality of directions, such as the horizontal direction and the vertical direction, and outputs it to the controller 60. example) is also installed.

(Operation of washing, drainage)

When any one wash course is instructed by the user, the wash execution unit 60a provided in the control device 60 executes a series of processes for that wash course.

When the washing process starts, the control device 60 opens the water supply valve 72 while the drain valve 110 is closed. Accordingly, water and detergent are supplied to the rotating tub 30 . The first opening/closing valve 121 is closed, and water flowing into the fourth passage 95 is not drained. In this way, when the water levels in the rotating tub 30 and the ventilation pipe 29a reach a predetermined level, the control device 60 stops water supply.

The control device 60 controls the drive device 50 and rotates the pulsator 40 forward and reverse for a predetermined period of time. When the washing process is finished, the first open/close valve 121 is opened, and the water accumulated in the rotary tub 30 is drained. The rinsing process is also performed under the same control as the washing process.

When the dehydration process starts, the control device 60 controls the driving device 50 with the first on-off valve 121 and the second on-off valve 122 open, and the rotary tub 30 and the pulsator (40) is switched to rotate integrally. In this way, the rotating tub 30 or the like is rotated at a high speed, so that the water contained in the laundry overflows from the spin-drying hole 32 . The water overflowing from the dewatering hole 32 flows down to the bottom of the drip tray 20 and drains through the first drain port 26, the first path 92, and the fourth path 95.

(Jo Sejeong)

Like the washing machine 1A and the washing machine 1C described above, this washing machine 1B also tends to be in an unsanitary state because water hardly accumulates in the outer space 39 . As described in the first embodiment or the second embodiment, if the washing water overflows from the rotary tub 30, the washing water can also be collected in the outer space 39, but a large amount of water is required, so water saving The benefits are compromised, and it is uneconomical.

Therefore, in the washing machine 1B of the present embodiment, an operation course (dish washing course) capable of effectively washing the outside space 39 is set without impairing the advantage of saving water. For this reason, the control device 60 is provided with a bath washing execution unit 60b that executes a bath washing course.

That is, the bath washing execution unit 60b causes the washing water stored in the rotary tub 30 to overflow to a preset washing water level by rotating the rotary tub 30 while controlling the rotational speed, so that the outer space 39 of cleaning is performed. Specifically, the bath washing execution unit 60b executes a preparation step, a washing step, and a post-processing step.

The detail of tank cleaning is demonstrated referring a flowchart. 61 shows the flow of the main process of bath washing.

When the user operates the operation unit 15 and instructs a bath washing course, the control device 60 locks the cover 13 and starts the bath washing process.

(preparation staff)

When bath washing is started, the controller 60 opens the water supply valve 72 with the first on-off valve 121 closed, similarly to the washing process. As a result, as shown in FIG. 63, water flows into the water supply device 70 and water is supplied to the rotary tub 30 (step S1). At that time, if the detergent is put into the detergent input container 73a, the detergent can also be supplied to the rotary tub 30 together with the water (regardless of the presence or absence of the detergent, water for washing is also referred to as “washing water”).

At this time, the water level sensor 29 detects the water level of the washing water pooling in the rotary tub 30 based on the water level of the vent pipe 29a, and continuously outputs the signal to the controller 60 (step S2). In this way, when the water level reaches the predetermined washing level, the control device 60 closes the water supply valve 72 to stop supplying water (step S3). The "washing water level" is a water level that is small relative to the capacity of the rotating tub 30, and is set in the control device 60 in advance. The washing water level is, for example, the water level at which half of the capacity of the rotating tub 30 or less is stored, and preferably the water below the capacity obtained by dividing the capacity of the rotating tub 30 into 3 or 4 equal parts It is the water level in case of retention.

In this way, when a predetermined amount of washing water accumulates in the rotary tub 30, the controller 60 controls the driving device 50 to intermittently rotate the pulsator 40 forward and backward. In this way, the inside of the rotating tub 30 is washed with washing water (step S4). The control device 60 switches the clutch 52a of the driving device 50 from the second state to the first connected state so that the rotating tub 30 can be rotated (step S5). Note that this processing (steps S4 and S5) may be omitted.

(cleaning step)

In the washing step, the outer space 39 is cleaned by effectively using a small amount of washing water accumulated in the rotating tub 30 (step S6). Specifically, the inside of the drip tray 20, specifically, the outer space 39 is washed by overflowing the washing water while increasing the rotational speed of the rotary tub 30 (shower washing).

62 shows a specific processing flow in the shower cleaning. In the shower cleaning, processing consisting of a first shower cleaning step, an intermediate standby step, and a second shower cleaning step is executed.

Specifically, the control device 60 controls the drive device 50 to gradually accelerate and increase the rotation of the rotating tub 30 (step S61). At that time, the rotation of the rotating tub 30 may be increased stepwise or continuously. In this way, the rotating tub 30 is rotated at an acceleration lower than the acceleration in the dewatering step until the number of rotations of the rotating tub 30 reaches a predetermined first rotational number lower than the number of rotations in the dewatering step. Accelerate (step S62).

By doing so, as shown in FIG. 64, the washing water rises along the inner surface of the torso member 31 and continuously overflows from the dewatering hole 32 (first shower washing step). Since the first rotational speed is low, the washing water overflowing from the dewatering hole 32 is mainly directed downward and is scattered on the lower portion of the inner wall surface of the drip tray 20. That is, the lower part of the drip tray 20 can be cleaned.

When the first rotational speed is reached, the controller 60 maintains the rotational speed of the rotating tub 30 at the first rotational speed for a predetermined period of time (does not accelerate) and puts it in a standby state (steps S63 and S64, middle standby step).

In this way, when the rotation of the rotating tub 30 is stabilized, the controller 60 gradually rotates the rotating tub 30 from the first rotational speed to a predetermined second rotational speed higher than the first rotational speed. Accelerate and raise (steps S65, S66). At this time, it is preferable to make the acceleration higher than that of the first shower washing step.

By doing so, as shown in FIG. 65, the washing water continuously overflows from the dewatering hole 32 (second shower washing step). Since the second rotational speed is higher than the first rotational speed, the force of the washing water overflowing from the dewatering hole 32 is strong. For this reason, the washing water overflowing from the dewatering hole 32 is mainly directed upward and scattered on the upper portion of the inner wall surface of the drip tray 20. That is, the upper part of the drip tray 20 can be cleaned.

When the second rotational speed is reached, the controller 60 maintains the rotational speed of the rotating tub 30 at the second rotational speed for a predetermined period of time (steps S67 and S68). After that, it decelerates and stops rotation of the rotating tub 30 (step S7 in FIG. 61).

(Post-processing step)

When the rotation of the rotary tub 30 is stopped in this way, the controller 60 discharges the washing water with the first on-off valve 121 and the second on-off valve 122 open (step S8 ).

When the water drainage is finished, the controller 60 rotates the rotary tub 30 at a higher rotational speed than the second rotational speed, for example, to blow away the washing water adhering to the rotary tub 30 and dehydrate the water. (step S9).

According to this washing machine 1B, the outer side of the holeless rotary tub 30, that is, the outer space 39 can be effectively washed with a small amount of water without requiring complicated work. Therefore, it is possible to provide a high-quality washing machine capable of maintaining cleanliness without impairing the water-saving advantage. In addition, the washing water level, first rotational speed, second rotational speed, acceleration, and waiting time in tank washing are appropriately set according to specifications such as the size and weight of the rotating tub 30 and the drip tray 20.

<Application Example 1>

During tank washing, the washing water overflowing from the rotary tank 30 accumulates in the lower part of the drip tray 20 . When the washing water accumulated in the lower part of the drip tray 20 increases, a water stream is generated in the washing water by being stirred by the rotating rotary tank 30 or the flange shaft 35. Since the drip tray 20 is supported on the inside of the housing 10 in a rocking state, a bias may occur in the distribution of the washing water accumulated inside the drip tray 20 due to the influence of the water flow or the like. . Variations in the overflow amount may also cause bias in the distribution of the washing water.

If the distribution of the washing water collected in the lower part of the drip tray 20 is biased, it may resonate with the rotation of the rotary tub 30, causing the drip tray 20 to fluctuate greatly. When the drip tray 20 is greatly shaken, noise or vibration may occur. In this way, when the drip tray 20 contacts the housing 10, the distribution of the washing water is greatly biased at once due to the impact, and abnormal vibration such as the washing machine 1B toppling over or being damaged may occur.

Therefore, in each cleaning step in the bath cleaning, in detail, in the process of accelerating the rotation of the rotary tub 30 in step S61 or step S65, an acceleration control process for preventing the occurrence of such noise, vibration, and even abnormal vibration is performed. It is desirable to do

66 shows the flow of the acceleration control process. As shown in step S61 and the like described above, the control device 60 controls the drive device 50 to gradually accelerate the rotation of the rotating tub 30 (step S601), and the signal input from the rotation sensor 53 Based on this, the rotation of the rotating tub 30 is increased until the rotational speed reaches the target rotational speed (first set rotation speed or second set rotation speed) (step S602).

At this time, the control device 60 presets the amplitude of the drip tray 20 based on the signal input from the acceleration sensor 25 (the signal related to the amplitude, which is the horizontal direction fluctuation component of the drip tray 20). The set threshold value (for example, a set value obtained by adding a predetermined safety amount to the amplitude at which abnormal vibration occurs) is checked (step S603). And when the amplitude of the drip tray 20 exceeds the limit value, the control device 60 stops rotation of the rotary tub 30 and forcibly terminates the tank cleaning (step S604). Therefore, it is possible to prevent abnormal vibration from occurring during bath washing. In addition, abnormal vibration caused by unexpected reasons, such as when laundry is mistakenly put into the rotary tub 30, can be prevented.

Normally, the amplitude of the gutter tank 20 does not exceed the threshold value, and the gutter tank 20 swings at an amplitude sufficiently smaller than the threshold value until the rotational speed of the rotary tank 30 reaches the target rotation speed. do. In the meantime, the control device 60 further sets the amplitude of the water gutter tank 20 to a predetermined allowable value (a set value smaller than the threshold value and set according to the specifications of the water gutter tank 20 or the like). It is checked (step S605).

And when the amplitude of the drip tray 20 exceeds the permissible value, the rotational acceleration of the rotating tub 30 is stopped, and the rotation speed at that time is maintained (step S606). By doing so, the overflow from the rotary tub 30 is suppressed, and the action of the rotation of the rotary tub 30 on the washing water pooling in the drip tray 20 is reduced, so that the fluctuation of the drip tray 20 is reduced. and its amplitude is reduced.

In that way, when the amplitude of the drip tray 20 becomes below the permissible value (NO in step S605), the control device 60 restarts rotational acceleration of the rotary tub 30. In this way, by increasing the rotational speed of the rotary tub 30 step by step, overflow can be performed properly and smoothly, so that the occurrence of bias in the distribution of the washing water pooling in the drip tray 20 can be suppressed. . As a result, it is possible to suppress the generation of noise and vibration during bath cleaning, and to prevent the occurrence of abnormal vibration.

<Application Example 2>

Dirt such as dust can be removed by sprinkling washing water in the form of a shower, but it is not easy to remove mold and bacteria (microorganisms) generated in the outer space 39 . When a disinfectant is used, mold and the like can be killed, but a large amount of rinsing is required after that, so there is a difficulty in saving water. From this point of view, disinfection by heating is effective because a stable effect is obtained.

For example, E. coli is easily killed at 65°C. The mold sterilization temperature is also at the same level, and, for example, by immersing in hot water at 65° C. for several seconds (so-called moist heat sterilization), general bacteria and fungi can be killed. Therefore, it is preferable to take advantage of the advantage of a small amount of washing water and perform disinfection by heating so that mold and the like can also be removed (washed).

Specifically, in the preparation step described above, a treatment of heating the washing water to a predetermined sterilization temperature such as 65°C is performed (thermal hydration treatment). The sterilization temperature is set in the control device 60 in advance. Since the amount of washing water used for washing in the shower is small, it can be heated to the disinfection temperature in a practical time even with a household power supply. Low power consumption and economical.

In shower washing, since hot water is sprayed on the outside space 39 like a shower, the hot water can be applied to the outside space 39 without bias, and the entire outside space 39 can be in a moist heat state. Therefore, stable disinfection can be performed.

In particular, during the thermal hydration treatment, it is preferable to perform a treatment of correcting the sterilization temperature upward based on the ambient air temperature around the drip tray 20 . Specifically, the bath washing execution unit 60b corrects the sterilization temperature upward based on the signals input from the temperature sensor 202 and the water temperature sensor 201, and discharges the washing water at the corrected temperature (corrected sterilization temperature). It is better to heat it up.

In shower washing, since washing water is sprinkled, it comes into contact with the ambient air around the drip tray 20 and the temperature is lowered. In addition, since the wall surface of the drip tray 20 is at the same temperature as the outside air before shower washing, the washing water contacting the wall surface is deprived of heat and further lowers in temperature. If the amount of washing water is large, the amount of heat is also large, so it is possible to put the outer space 39 in a moist heat state at the disinfection temperature in the latter half of the shower washing, but since the amount of washing water is small, there is a possibility that disinfection will be insufficient there is.

On the other hand, the control device 60 converts the amount of heat lost by the temperature increase of the outside air and the wall surface of the drip tray 20, the amount of heat released during heating, and the like from the temperature of the outside air around the drip tray 20. Then, based on the amount of heat and the water temperature of the washing water, the sterilization temperature is upwardly corrected to the corrected sterilization temperature so that the outside space 39 can be brought into a wet heat state at the sterilization temperature quickly. As a result, even if the temperature of the outside air or the water temperature changes depending on the season or the like, heat sterilization can be performed without being affected by it, and stable sterilization performance is obtained.

<Example of change>

In the sixth embodiment, the washing machine 1B of the type that drains naturally (drainage by flowing water) is exemplified, but it can also be applied to a washing machine equipped with a drainage pump, such as the washing machine 1C shown in FIG. 11 described above. .

In addition, the temperature setting in the bath washing may be made selectable when the user operates the operation unit 15. For example, the intensity of cleaning and disinfection is displayed in relation to the temperature, and settings such as 60°C for cleaning/sterilization (weak) and 70°C for cleaning/sterilization (strong) are displayed and selectable. . In that case, convenience and economy are excellent.

In addition, when the water temperature of the water accumulating in the rotary tub is high, the locking device 14 may be operated to lock the cover 13 (a state in which the user does not open it even if he or she tries to open it). When the water temperature drops, the lock is released (a state in which the lid 13 is closed, but can be opened when the user operates to open it). Doing so improves safety.

In addition, when draining the water accumulated in the water gutter tank, you may make it drain after the water becomes below a predetermined temperature. By doing so, it is possible to prevent the drain hose or the like from becoming hotter than necessary (heat resistance is unnecessary).

Further, in the sixth embodiment, when the amplitude of the gutter tank exceeds the threshold, the tank washing is forcibly terminated. However, the rotation of the rotary tank may be stopped once and the tank washing may be started again after a predetermined period of time has elapsed. . When the amplitude of the gutter tank exceeds a threshold value, it is preferable to notify the user of the error by means of a buzzer or blinking display.

1: washing machine
10: housing
20: water tank
26: first drain
27: second drain
28: 3rd drain
30: rotating tank
31: fuselage member
32: dewatering hole
33: balancer
35: flange shaft
36: outlet
40: Pulsator
50: driving device
60: control device
70: water supply device
80: axis unit
91 frequency path
92 First path
93 second path
94 third path
95 fourth path
100: index valve
110: drain valve
J: breeder

Claims (17)

housing;
a water tank disposed inside the housing;
a rotary tub disposed inside the drip tray and having an outlet opening downward; and
A drainage path for draining the water stored in the drip tray and the rotating tub to the outside of the housing; includes,
The water tank,
A water supply path communicating with the outlet and located between the lower surface of the rotary tank and the lower surface of the water receiving tank, a first drain hole disposed outside the water supply path and formed on the lower surface of the water receiving tank, and disposed inside the water supply path And a second drain formed on the lower surface of the drip tray and a third drain opened on the upper side of the drip tray,
The drainage path is
A first path connected to the first drain, a second path separated from the first path and connected to the second drain, and downstream of the third drain, the junction of the first path and the second path. A third path connecting the sides, a fourth path connected to the first path, the second path, and the third path to drain the water stored outside the housing, and installed on the first path Including an index valve and a drain valve installed on the downstream side of each confluence of the first path and the second path on the fourth path,
The water valve includes a flow path formed inside the water flow valve, a float that opens and closes the flow path, a first regulating unit provided above the float to regulate displacement of the float, and a water flow path provided below the float. a second regulatory division;
At least one of the float and the first regulating part and the second regulating part includes a soft member having elasticity. According to claim 1,
The water guide path includes a space partitioned from the outside of the water guide path inside the drip tray,
The washing machine according to claim 1 , wherein the first path directly communicates with the inside of the drip tray through the first drain hole, and the second path communicates with the rotating tub through a space of the water supply path. delete delete delete According to claim 1,
The first regulating part protrudes into the passage and is formed in a flange shape continuous in the circumferential direction of the passage, and the second regulating part protrudes into the passage and is formed in a shape partially cut with respect to the circumferential direction of the passage washing machine. delete delete delete delete According to claim 2,
The washing machine wherein the water conduction path further includes a partition plate disposed on a lower surface of the water receiver tank, and the water guide path is provided to be partitioned from an inside of the water receiver tank by the partition plate. According to claim 1,
The drainage path is
The washing machine further comprises a circulation path communicating with the water supply path and circulating water stored in the water supply path back to the rotary tub. According to claim 12,
The washing machine further comprises a heater disposed inside the water supply path and heating water stored in the water supply path. According to claim 12,
Further comprising a ring-shaped balancer installed along the inside of the opening on the upper side of the rotating tub,
The balancer includes an overflow path disposed at the bottom of the balancer and communicating from the top of the rotating tub to the outside of the rotating tub, disposed at the top of the balancer, and protruding upward from the balancer. ,
The circulation path includes a discharge port disposed above the water receiving tank to discharge water into the rotating tub,
The washing machine is provided so that the outlet protrudes from the water stop rib toward the inner side of the rotary tub in a radial direction. According to claim 14,
The water tank has a tank cover installed on the top thereof,
The jaw cover has a flange portion protruding inward in a radial direction and covering an opening of the rotating jaw,
The washing machine wherein the outlet is integrally formed with the flange portion. According to claim 15,
The balancer has a cover rib that protrudes upward from the radially inner side of the rotating tub more than the index rib and reduces a gap between the balancer and the flange portion;
The washing machine further comprises a flow path communicating a space between the water stop rib and the cover rib with an inside of the rotary tub so as to drain water collected between the water stop rib and the cover rib to the inside of the rotary tub. According to claim 1,
A pulsator installed in the lower part of the rotating tub and driven to rotate around the rotating shaft of the rotating tub;
A circulation path installed on a side of the rotating tub, communicating with an upper washing space and a lower pump space partitioned by the pulsator, and circulating water through the pulsator,
The pulsator,
A washing machine comprising: a disk-shaped base; and a plurality of through-holes penetrating the base and communicating the laundry space and the pump space.

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