JP3524688B2 - Drum type washing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum type dry washing machine having a function of effectively using a detergent with a large amount of foam.

[0002]

2. Description of the Related Art Conventionally, a large number of horizontal drum type washing machines which rotate about a horizontal axis have been proposed, and most of the washing machines used in Europe are of this type. . In this type of washing machine, the rotating drum is generally continuously rotated at a low speed to perform the washing work, but the rotating drum can be used to easily perform dehydration and drying.

A conventional drum type washing machine is shown in FIGS. 9 and 1.
An outline of the configuration and operation will be described with reference to FIG. FIG. 9 is a schematic vertical sectional front view showing an embodiment of a conventional drum type drying and washing machine, and FIG. 10 is a schematic vertical side view showing an embodiment of a conventional drum type drying and washing machine.

In FIGS. 9 and 10, 1 is a washing machine main body, 2 is a rotating drum, 3 is a stirring baffle, 4 is a water tank, 5
Is a hose, 6 is a water supply valve for washing, 7 is a water supply valve for drying, 8 is a cooling duct, 9 is a drain duct, 10 is a filter case, 11 is a circulation pump, 12 is a drainage pump, 13 is a drainage hose, and 14 is dry. A unit, 15 is a rotating shaft, 16 is a drum pulley, 17 is a motor, 18 is a belt, 19 is an exhaust port, 20 is a blower fan, 21 is an operation panel, 22 is a control device, 23 is a detergent case, 24 is a door, and 25 is a A water level sensor, 26 is a door packing, 27 is a filter, 28 is an anti-vibration mechanism, 29 is a heater for drying, 30 is a ventilation duct, 3
1 is an air valve.

This conventional drum type dry washing machine is arranged such that a water tub 4 is suspended from the inside upper end of the washing machine main body 1 by an anti-vibration mechanism 28, and rotates inside the water tub 4 about a horizontal axis. It has a double structure with the drum 2. Figure 10
Reference numeral 21 is an operation / display portion, and the control device 22 is attached to the back side thereof. The water tank 4 has a function of storing and discharging a washing liquid and a dehydrating liquid. Further, an exhaust duct 19 for guiding hot air during drying to the cooling duct 8
Has an exhaust port 32 for connecting to.

The drum 2 is provided with water on its entire peripheral wall during washing,
A large number of small holes are provided to allow drainage during dehydration and warm air during drying to pass through. A blower fan 20, a heater 29, and a heater 2 for circulating air are provided above the water tank 4.
A drying unit 14 is attached which is composed of a drying duct 30 which houses 9 and serves as an air circulation path.

A door 24 for loading and unloading laundry is provided on the front of the main body 1 of the washing machine, and the door 24 has a structure which is sealed by a door packing 26 between the water tub 4. Reference numeral 17 is a drive motor for rotating the drum 2, and 12 is a drainage pump for discharging washing liquid and the like out of the machine. Reference numeral 27 is a thread waste filter provided in a pipe path between the water tank 4 and the drainage pump 12.

During the drying process, the air is warmed by the heater 29 and blown into the drum 2 by the blower fan 20 to remove moisture from the laundry. From there, the exhaust port 32 of the aquarium 4
Through the exhaust duct 19 and through heat exchange when coming into contact with cold water in the cooling duct 8 located on the side surface of the water tank 4, moisture is condensed. The cooled dry air is again blower fan 2
0, reheated by the heater 29, and recirculated to the drum 2. An air valve 31 for preventing backflow is provided above the cooling duct 8.

In the above-mentioned drum type dry washing machine, washing water having an appropriate detergent concentration is put in a water tank and a lower portion of the drum, and the drum is rotated by a motor. The clothes contained in the drum absorb the washing water, are scraped up and fall, and are washed by being knocked down when falling.

[0010]

However, the conventional drum type dry washing machine as described above is not used for the hard water and low foaming detergent which is the normal use state in Europe in the main type drum type washing machine in Europe. Since it is a combination, there is almost no problem with foaming, but in the state of use in Japan, water is soft water, and detergents with high foaming property are still the mainstream.

Therefore, when the drum type dry washing machine is used, the use of a low foaming detergent is encouraged, but when a high foaming detergent is used, it remarkably foams during the washing process, and the foams rotate according to the rotation of the drum. While rising in the water tank and the drum, even in the drying path, especially in the heat exchanger, there is a case where it overflows to the outside of the machine from the connection point of the air valve and the drying unit and wets the floor surface. In addition, even if the connection point is sealed to prevent the detergent from leaking, detergent foam may enter the drying path and cause corrosion of the drying heater, or the detergent foam may act as a cushion for washing by washing. Remains and the cleaning performance deteriorates.

As a means for solving such a problem, the drum type washing machine disclosed in Japanese Utility Model Publication No. 2-17581 proposes a foam detecting means and a water sprinkling device, which prevents foam around the drum. Although it is possible, it is not sufficient to prevent harmful effects due to invasion of bubbles into the drying system and deterioration of cleaning performance and rinsing performance, and special structure changes such as newly installing a sprinkler are required. In addition, in the drum type washing machine described in Japanese Patent Publication No. 3-23198,
When bubbles are detected, the operation is stopped, and although the leakage of bubbles can be prevented, the drawback that a detergent with a large amount of foam cannot be used has not been solved.

The present invention is intended to solve the problems of the above-described conventional structure, and does not cause foam leakage, deterioration of cleaning performance and rinsing performance even when a detergent with a large amount of foam is used. Another object of the present invention is to provide a drum type dry washing machine which is not limited by the detergent used without drastic structural changes.

[0014]

DISCLOSURE OF THE INVENTION The drum type dry and washing machine of the present invention solves the above problems. The invention according to claim 1 provides a horizontal shaft in a water tank provided in an outer box. It is equipped with a rotating drum that rotates freely around the center and that houses laundry inside, and a water level sensor that detects the water level in the aquarium, and a series of washing and rinsing operations such as washing, rinsing, dehydration, and drying. In a drum type dry washing machine for performing the above in one drum, a means for opening a water supply valve for drying and supplying water from a cooling duct during a washing process is provided.

The invention according to claim 2 is free to rotate about a horizontal axis in a water tank arranged in the outer box, and
Equipped with a rotating drum that stores laundry inside and a water level sensor that detects the water level in the aquarium, a drum-type drying that performs a series of washing and drying operations such as washing, rinsing, dehydration, and drying in one drum In the washing machine, during the water supply operation before the washing process, water is supplied from the water supply valve for washing up to a predetermined water level, tumbling is started, then the water supply valve for drying is opened, and makeup water is supplied from the cooling duct. It is equipped with means.

The invention according to claim 3 is the same as claim 2
In the configuration of the invention described above, supplementary water is supplied intermittently. Further, according to the invention of claim 4, in the configuration of the invention of claim 2, the makeup water is supplied only when the drum rotates in one direction.

Further, according to a fifth aspect of the present invention, in a water tank arranged in the outer box, a rotating drum which freely rotates about a horizontal axis and accommodates laundry therein, and the inside of the drum. Alternatively, in the drum type dry washing machine, which is provided with a bubble detection means for detecting bubbles generated in the drying path and performs a series of washing and drying operations such as washing, rinsing, dehydration, and drying in one drum. When the foam detection means detects a foam, it is provided with means for opening the water supply valve for drying and supplying water from the cooling duct.

Furthermore, the invention according to claim 6 is the structure of the invention according to claim 5, wherein the bubble detection means is provided in the cooling duct and the drying duct. Further, the invention according to claim 7 is the configuration of the invention according to claim 5 or 6, wherein when the bubble detecting means detects a bubble,
It is provided with means for opening the water supply valve for drying, supplying water from the cooling duct, and stopping the water supply when the foam detecting means stops detecting foam.

The invention according to claim 8 is a rotating drum which freely rotates about a horizontal axis in a water tub arranged in an outer box and which stores laundry therein, and the inside of the water tub. Equipped with a water level sensor to detect the water level of, wash, rinse,
In a drum type washing machine that performs a series of washing and drying operations such as dehydration and drying in one drum, a selection key is provided when using a detergent with a large amount of foam, and when the key is pressed, the washing key is pressed. A means for supplying water from the cooling duct by opening the water supply valve for drying during the process is provided.

The invention according to claim 9 is such that, in the structure of the invention according to claim 8, when the selection key is pressed, the washing time is also extended. Furthermore, in the invention of claim 10, in the configuration of the invention of claim 8 or claim 9, when the rotation speed of the intermediate dehydration after washing is less than or equal to a predetermined value, the water level in the rinsing step is higher than the predetermined value. It controls to become.

Furthermore, in the invention of claim 11, in the structure of the invention of claim 8 or 9, the number of rinses is increased when the number of rotations of the intermediate dehydration after washing is below a predetermined value. To control. Further, the invention according to claim 12 is a display indicating that control using a detergent with a large amount of foam is performed when the selection key is pressed in the configuration according to any one of claims 8 to 11. It is equipped with means.

According to a thirteenth aspect of the present invention, in the configuration of the twelfth aspect of the present invention, the display means is provided with means for displaying the extension of the washing time by correcting the remaining time display. It is a thing.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION The first means (the invention according to claim 1) of the drum type dry washing machine of the present invention is located above the cooling duct when the washing tumbling is started and the foam of the detergent increases. It is a means for sprinkling more water to eliminate bubbles entering the cooling duct, and a second means (the invention according to claim 2).
In order to prevent the amount of water in the washing process from increasing above a specified value, water is supplied using a water-absorbing valve for washing in order to pour detergent into the aquarium, and a means for supplying makeup water that causes a lot of foaming of the detergent from the cooling duct. is there.

The third means (the invention according to claim 3) and the fourth means (the invention according to claim 4) prevent the amount of makeup water from becoming excessive, so that the bubbles can be effectively eliminated. Means for intermittently opening and closing the water supply valve for drying so as to sprinkle water, and fifth means (the invention according to claim 5) and sixth means (the invention according to claim 6) ),
The seventh means (the invention according to claim 7) is a means for providing foam detection means and performing water spray for defoaming when there are many foams in the detergent. It is configured to be installed in the parts for use.

Furthermore, eighth means (the invention according to claim 8), ninth means (the invention according to claim 9), tenth means (the invention according to claim 10), and eleventh means The means (the invention according to claim 11) is to allow a user to select a washing course suitable for a detergent with a large amount of foam when the detergent with a large amount of foam is used.
The means (the invention according to claim 12) and the thirteenth means (the invention according to claim 13) confirm that the user has made the selection when the course using the detergent with a large amount of foaming is selected. In addition, it provides a means to inform the user that the driving time changes depending on the selection.

In the first means of the drum type washing machine of the present invention, the foaming of the detergent is suppressed by opening the water supply valve for drying and supplying water from the cooling duct, and the foam from the connecting portion of the cooling duct or the like is suppressed. Leakage can be prevented. Further, as compared with the case of supplying water from the water supply valve for washing, it is possible to reduce the foaming in the water tank, so that the foam of the detergent acts as a cushion and the degree to which the cleaning performance is deteriorated can be reduced.

Further, in the second means, the water for pouring the detergent is supplied from the water supply valve for washing and the makeup water after the tumbling is started from the cooling duct. There is no need to use water, and it is effective in preventing water loss, which is a feature of drum type washing machines.

The third and fourth means can further reduce the amount of water used for defoaming, and the fifth, sixth and seventh means can reduce the amount of foam in the detergent. Only the water valve for drying is opened and water is sprayed, so when using a detergent with less foaming, water can be supplied from the water valve for washing and the water supply time can be shortened. Furthermore, since the operating time of the water supply valve for drying can be reduced, deterioration of the water supply valve for drying can be prevented.

Further, in the eighth, ninth, tenth, and eleventh means, the user washes the course using the detergent with a large amount of foam, so that the control chart can be easily adapted to the detergent with a large amount of foam based on the information. In addition, the twelfth means allows the user to check the contents set by the user, so that the use of detergent with a large amount of foam can extend the operating time and increase the amount of water used. Etc. can be easily understood.

An embodiment of the drum type drying and washing machine of the present invention will be described below with reference to FIGS. 1 to 8. The same parts as those in the conventional example will be described with the same reference numerals. 1 is a schematic vertical sectional front view showing an embodiment of the drum type drying and washing machine of the present invention, and FIG. 2 is a schematic vertical side view showing an embodiment of the drum type drying and washing machine of the present invention.

In FIGS. 1 and 2, reference numeral 1 denotes a washing machine main body,
2 is a rotating drum, 3 is a stirring baffle, 4 is a water tank, 5 is a hose, 6 is a water supply valve for washing, 7 is a water supply valve for drying, 8 is a cooling duct, 9 is a drain duct, 10 is a filter case, 1
1 is a circulation pump, 12 is a drain pump, 13 is a drain hose, 14 is a drying unit, 15 is a rotating shaft, 16 is a drum pulley, 17 is a motor, 18 is a belt, 19 is an exhaust port,
20 is a blower fan, 21 is an operation panel, 22 is a control device, 23 is a detergent case, 24 is a door, 25 is a water level sensor, 26 is a door packing, 27 is a filter, 28 is a vibration isolation mechanism, 29 is a heater for drying, 30 is a ventilation duct, 31
Is an air valve.

In the above-mentioned drum type dry washing machine, a rotating drum 2 and a water tank 4 each having a short axial direction and having a substantially cylindrical shape are provided in a washing machine main body 1. The rotary drum 2 has a rotary shaft 15 disposed substantially along the horizontal direction, and one end in the direction along the rotary shaft 15 (the end opposite to the rotary shaft) is opened for loading laundry. A door 24 is provided.

Reference numeral 26 is a door packing, which is internally fitted as a seal member made of an elastic body such as rubber. Therefore,
When the door 24 is closed, the sealing material is squeezed between the peripheral edge of the door and the peripheral edge of the inlet, so that the watertightness of the washing machine body 1 and the water tub 4 is maintained. In addition,
In order to absorb the vibration, the water tub 4 is suspended from the upper part of the washing machine main body 1 by the vibration isolation mechanism 28, whereby the vibration of the water tub 4 is damped.

The rotary drum 2 accommodates laundry and rotates, and inside the rotary drum 2, a stirring baffle 3 is formed in a mountain range projecting toward the central axis. Aquarium 4
Is provided around the rotary drum 2 and stores washing water (including detergent-containing water and rinsing water). This washing water is supplied into the water tank 4 through the water pipe 61 (see FIG. 2) by opening and closing the water from the washing water supply valve 6 through the high-pressure hose 5 connected to the water. Is supplied into the water tank 4 through the water pipe 61 after entering the detergent case 23).

Further, the structure is such that tap water is sent via the water supply valve 7 for drying so as to spray the cooling / drying / dehumidifying cooling water into the cooling duct 8 in a shower shape. At the bottom of the water tank 4, a drainage duct 9 for discharging the washing water in the water tank 4 is provided. The drainage duct 9 removes foreign matters such as lint and dust contained in the drained washing water. The filter 27 removes thread waste, dust, and the like.

The filter case 10 is connected to a circulation pump 11 for circulating the washing water in the water tub 4 and a drain pump 12 for discharging the washing water in the water tub 4 to the outside of the washing machine. When circulating the washing water stored in the water tub 4, the washing water in the water tub 4 passes through the filter 27 in the filter case 10 from the drainage duct 9, and after the contaminants are removed, the circulation pump 11 causes the water in the water tub 4 to circulate. Returned to. From the circulation pump 11, the door packing 2 near the inlet of the water tank 4
The washing water is returned to the water tub 4 by the circulation pipe 111 opening at 6.

When the washing water in the water tank 4 is drained, the drainage pump 12 branched from the filter case 10 is used.
Therefore, the washing water is drained from the washing machine main body 1 through the drain hose 13. A drying unit 14 and a cooling duct 8 are provided in the main body 1 of the washing machine to dry the laundry. One end of the cooling duct 8 is connected to a side surface of the water tank 4 or an exhaust duct 19 communicating with the end, and the other end is connected to a blower fan 20 in the drying unit 14 above the water tank 4.

Above the cooling duct 8 is an air valve 31 for preventing backflow. This is to ensure an air break between the water supply connection and the waterway system in the washing machine in case the water supply pressure becomes lower than atmospheric pressure. This is to prevent the non-drinking water from flowing back from the washing machine side even if a suction state occurs.
It is provided in accordance with IEC standard appendix AA. Cooling water for dehumidification enters from the water supply valve 7 for drying. The drying unit 14 is provided at the end of the cooling duct 8 and in the middle of the air flow path, and the blower fan 2 is provided.
0, the drying heater 29, and the blower duct 3 serving as a blower passage
It consists of zero.

During the drying process, the air warmed by the drying heater 29 is sent into the drum 2 by the blower fan 20, and the hot and humid air containing the moisture evaporated from the wet laundry in the drum 2 is exhausted from the water tank 4. It enters the cooling duct 8 through the exhaust duct 19 from the mouth 32. Moisture is condensed by heat exchange when the jet of cold water supplied through the water supply valve for drying 7 comes into contact with humidity. The cooled dry air is sent again to the blower fan 20, reheated by the heater 29, and recirculated to the drum 2.

A horizontal rotary shaft 15 is fixedly provided at the end of the drum 2 which is the center of rotation of the drum 2 through the center of the water tank 4 and which is opposite to the input port. Is fixed. A drum driving motor 17 is provided at the lower end of the water tank 4, and a rotation shaft of the motor 17 and the drum pulley 16 are connected by a belt 18. Parts such as the water tank 4, the rotating shaft 15, the drum pulley 16, and the drum driving motor 17 are housed in the washing machine body 1.

On the front upper part of the washing machine main body 1, there is arranged an operation panel 21 provided with a panel input section such as a start / stop switch and various operation switches, and a display section such as an indicator lamp. . A control device 22 for electrically controlling the washing machine is disposed inside the operation panel 21, and a signal line from the operation panel 21 is connected to the control device 22. The control device 22 includes a door switch that detects opening / closing of the door 24,
A pressure switch 25 for detecting the water level in the water tank 4 by water pressure and an output signal line of a tachometer for detecting rotation of the motor 17 are connected.

FIG. 3 is a circuit block diagram of the control device 22 of the drum type drying and washing machine. As shown in FIG. 3, the control device 22 mainly includes a power supply unit 33, a display unit 212, a panel input unit 211, a signal input unit 34 such as a door switch, a control unit 35, an output unit 36, and a load unit 37. .

The power supply section 33 receives commercial power from the outlet plug 38 through the power switch 39, transforms the AC power supply, rectifies it, and outputs a DC power supply for control, or oscillates a clock pulse. To do. Display 212
Includes a buzzer in addition to the above-mentioned display lamp.

The control section 35 is mainly composed of a microcomputer (hereinafter referred to as a microcomputer) to make judgments / commands regarding the operation of the washing machine, and has a calculation / storage section. The output unit 36 has a semiconductor element including a triac that outputs a drive signal according to a command from the control unit 35. The load section 37 is operated by the drive signal from the output section, and has a drying unit 14, a water supply valve 6 for washing, a drainage pump 12, a door lock mechanism, and an operation relay for the drum driving motor 17.

The foam detecting means of the drum type drying and washing machine of the present invention are denoted by reference numerals 40 and 41 in FIG. 1 and are attached to the cooling duct 8 and the drying duct 30, respectively. Also,
Reference numeral 42 of the operation unit / display unit of FIG. 4 is a selection key when a detergent with a large amount of foam is used, 43 is a display that lights up when the key is pressed, and 44 is a segment portion that indicates the remaining time. is there.

Next, the operation of the drum type drying and washing machine having the above structure will be described. The operation from basic washing to drying is almost the same as the conventional drum type washing machine,
The outline is as follows.

Regarding the general operation of the operation from the washing process to the dehydration process, in the washing process, the laundry is put in the drum 2, the detergent is put in the detergent case 23, the power is turned on, and the panel input section 211 is operated. If you press the start key in
The washing operation is started. First, after the door 24 is locked, the water supply valve 6 for washing is opened to supply water to a predetermined water level, and the washing liquid in which the detergent is dissolved is poured from above to be included in the laundry. Next, the drum 2 is rotated at a low speed to perform washing.

The laundry in the drum 2 is lifted to near the top of the drum 2 by the centrifugal force generated by the rotation of the drum 2 and the baffle 3, and then falls by its own weight (called tumbling). By repeating this tumbling, the laundry is knocked and washed by the impact force when it falls.

The washing water is absorbed by the clothes by the tumbling and the water level is lowered, so that makeup water is supplied. This make-up water is used in the form of spraying water from above the cooling duct 8 by opening the water supply valve 7 for drying in order to suppress foaming of the detergent and prevent the detergent foam from entering the cooling duct 8.

Since the exhaust port 32 for the drying air avoids the drum driving motor 17 and is opened toward the cooling duct 8 so that it can be easily connected to the cooling duct 8, the embodiment shown in FIG. In the above-mentioned form, when the rotary drum 2 rotates counterclockwise, a large amount of foam of the detergent enters the cooling duct 8. In order to prevent this, when the rotary drum rotates counterclockwise, the cooling water is sprayed to effectively suppress bubbles and save water. Intermittent watering can also save water.

Further, when a detergent with less foaming is used, it is not necessary to control the defoaming as described above, so that the water supply time can be shortened by supplying water from the water supply valve 6 for washing (washing). Water supply amount of water supply valve is 10 liters /
Minutes, the water supply rate of the water supply valve for drying is generally about 0.3 liter / minute). Provided with a foam detection means and means for selecting a suitable course when using a detergent with a large amount of foam, washing, rinsing and defoaming operations suitable for each type of detergent (amount of foam) are performed, and all detergents are used. Are ready to use.

The basic operation after rinsing is the same as the conventional example. Rinsing is performed by rotating the rotary drum 2 at a low speed. When the washing is completed, the rotation of the rotary drum 2 is stopped, the drainage pump 12 is turned on, and the washing liquid is discharged to the outside of the machine. After the washing and rinsing steps are completed and the drainage is completed, the process moves to the dehydration step and the unbalance correction process of the low speed reversal operation for the purpose of correcting the unbalance of the clothes is performed.

After the unbalance correction process is completed, a low-speed rotation unbalance detection process is carried out for the purpose of detecting unbalance of clothes.
The rotation speed of the drum is increased, and the centrifugal force generated by the rotation of the drum at that time is used to press the laundry against the inner surface of the peripheral wall of the drum 2 for dehydration.

The drying is performed by sending the air warmed by the drying heater 29 into the drum 2 by the blowing fan 20 as in the conventional example. The hot and humid air containing the moisture evaporated from the wet laundry in the drum 2 passes from the exhaust port 32 of the water tank 4 through the exhaust duct 19 to the cooling duct 8.
Enter Moisture is condensed by heat exchange when the jet of cold water supplied through the water supply valve for drying 7 comes into contact with humidity. The cooled dry air is sent again to the blower fan 20, reheated by the heater 29, and recirculated to the drum 2.

Next, the essential operation of the drum type drying and washing machine of the present invention will be described with reference to the flow charts shown in FIGS. The first means is to supply water from the water supply valve 6 for washing as shown in the flowchart of FIG. 5, and when the tumbling is started, the water supply valve 7 for drying is also opened and water is sprinkled from the cooling duct 8 to complete the washing process. The operation to continue watering is performed.

In the second, third, and fourth means, as shown in the flow chart of FIG. 6, water is supplied from the washing water supply valve up to a predetermined water level, and when the predetermined water level is reached, the washing water supply valve 6 is turned on. After closing and starting tumbling, at the same time, the water supply valve 7 for drying is opened to sprinkle water from the cooling duct 8 to replenish the insufficient water and defoam the detergent.

In the fifth, sixth and seventh means, as shown in the flow chart of FIG. 7, when the foam detecting means detects the foam of the detergent, the water supply valve 7 for drying is opened and water is sprinkled from the cooling duct 8. , Perform the defoaming operation. When the amount of bubbles decreases and the bubbles of the detergent are no longer detected by the bubble detection means, the water supply is stopped. This operation is continued until the washing process is completed.

In the eighth, ninth, tenth, eleventh, and twelfth means, as shown in the flowchart of FIG. 8, when a course using a detergent with a large amount of foam is selected, the course is set. Is displayed, the washing time is automatically extended, and the remaining time display is also corrected.

Water is first supplied from the water supply valve 6 for washing, and when tumbling is started, the water supply valve 7 for drying is also opened and water is sprayed from the cooling duct 8, and the operation of continuing water spraying is performed until the washing process is completed. When the rotation speed of the intermediate dehydration is lower than the predetermined value due to the resistance of the foam of the detergent, the amount of rinsing water is automatically increased or the rinsing frequency is increased.

[0060]

Since the drum type dry washing machine of the present invention has the above-mentioned structure, the foaming of the detergent can be prevented by only supplying water from the cooling duct without adding new parts or changing the structure. You can expand the number of detergents that can be used easily without increasing the amount of water. Also, water can be saved while maintaining the defoaming effect by supplying water only in the rotating drum rotation direction where intermittent water supply and detergent foaming increase. .

Since the foam detection means is provided and the above control is performed only when a large amount of foam is generated, when a detergent with a small amount of foam is used, more water can be saved and the water supply time can be shortened. In addition, by making it possible to select a course in which a detergent with a large amount of foam is used, it is possible to prevent a decrease in cleaning performance, which is a problem when a detergent with a large amount of foam is used.

Further, when the number of rotations of the intermediate dehydration after the washing step is detected and the reduction of the number of rotations of dehydration due to the resistance of the foam of the detergent, that is, the remaining of the foam is detected, the amount of rinse water is increased or the rinse water is rinsed. Since the number of times is increased, it is possible to prevent deterioration of the rinse performance. Furthermore, it is displayed that a course using a detergent with a lot of foaming is selected, and the remaining time is corrected when the washing time etc. is extended. By indicating by this, it is possible to indicate to the user that the operating time is extended when a detergent with a large amount of foam is used.

As described above, the limitation of the detergent that can be used, which has been one of the drawbacks of the drum type dry washing machine, is reduced, and the usability and the commercial property can be improved.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional front view showing an embodiment of a drum type drying and washing machine of the present invention.

FIG. 2 is a schematic vertical sectional side view showing an embodiment of a drum type drying and washing machine of the present invention.

FIG. 3 is a block diagram showing an embodiment of a circuit configuration of a control device for a drum type drying and washing machine of the present invention.

FIG. 4 is an explanatory view showing an embodiment of a display / operation unit of the drum type drying and washing machine of the present invention.

FIG. 5 is a first control of the drum type drying and washing machine according to the present invention.
3 is a control flowchart showing the embodiment of FIG.

FIG. 6 is a second control of the drum type drying and washing machine according to the present invention.
3 is a control flowchart showing the embodiment of FIG.

FIG. 7 is a third control diagram of the drum type drying and washing machine according to the present invention.
3 is a control flowchart showing the embodiment of FIG.

FIG. 8 is a fourth control of the drum type drying and washing machine according to the present invention.
3 is a control flowchart showing the embodiment of FIG.

FIG. 9 is a schematic vertical sectional front view showing an embodiment of a conventional drum type drying and washing machine.

FIG. 10 is a schematic vertical cross-sectional side view showing an embodiment of a conventional drum type drying and washing machine.

[Explanation of symbols]

1 washing machine body 2 drums 3 stirring baffles 4 aquarium 5 hoses 6 Water valve for washing 7 Water valve for drying 8 cooling ducts 9 drainage duct 10 filter cases 11 Circulation pump 12 drainage pump 13 drainage hose 14 Drying unit 15 rotation axis 16 drum pulley 17 Drive motor 18 belts 19 Exhaust duct 20 Blower fan 21 Operation panel 22 Control device 23 Detergent Case 24 doors 25 Water level sensor 26 Door packing 27 filters 28 Anti-vibration mechanism 29 heater 30 heater duct 31 air valve 32 exhaust port 33 power supply 34 Signal input section 35 control unit 36 Output section 37 load section 38 outlet plug 39 Power switch 40 Bubble detection means 41 Bubble detection means 42 Selection key when using a foamy detergent 43 Display when using a detergent with a lot of foam 44 Remaining time display 61 Water pipeline (for washing) 111 circulation pipe 211 panel display 212 Panel input section

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ identification code FI D06F 58/00 D06F 58/00 A 58/02 58/02 Q (58) Fields investigated (Int.Cl. ⁷ , DB name) D06F 25/00 D06F 33/02 D06F 39/08 301

Claims (13)

(57) [Claims] 1. A rotating drum that freely rotates about a horizontal axis in a water tank arranged in an outer box and that stores laundry therein, and a water level sensor that detects the water level in the water tank. Preparation, washing, rinsing, dehydration, and a series of laundry including drying,
What is claimed is: 1. A drum type dry washing machine in which a drying operation is performed in one drum, which is provided with means for opening a water supply valve for drying during a washing process and supplying water from a cooling duct. 2. A rotating drum which freely rotates about a horizontal axis in a water tank arranged in an outer box and accommodates laundry therein, and a water level sensor for detecting a water level in the water tank. Preparation, washing, rinsing, dehydration, and a series of laundry including drying,
In a drum type dry washing machine in which a drying operation is performed in one drum, during the water supply operation before the washing process, water is supplied from a water supply valve for washing up to a predetermined water level, and a water supply valve for drying is started after starting tumbling. A drum-type dry washing machine comprising means for opening and supplying makeup water from a cooling duct. 3. The drum type drying and washing machine according to claim 2, wherein the makeup water is supplied intermittently. 4. The drum type washing machine according to claim 2, wherein the makeup water is supplied only when the drum rotates in one direction. 5. A rotary drum that freely rotates around a horizontal axis in a water tank arranged in an outer box and stores laundry therein, and a drum inside the drum or inside a drying path. In the drum type dry washing machine which is provided with a foam detecting means for detecting the formed foam and performs a series of washing and drying operations such as washing, rinsing, dehydration and drying in one drum, the foam detecting means detects the foam. In this case, a drum-type dry washing machine is provided with means for opening a water supply valve for drying and supplying water from a cooling duct. 6. The drum-type dry washing machine according to claim 5, wherein the foam detection means is provided in a cooling duct and a drying duct. 7. When the bubble detecting means detects a bubble,
7. The drum type apparatus according to claim 5, further comprising means for opening the water supply valve for drying, supplying water from the cooling duct, and stopping the water supply when the foam detecting means stops detecting foam. Drying washing machine. 8. A rotating drum which freely rotates around a horizontal axis in a water tank arranged in an outer box and accommodates laundry therein, and a water level sensor for detecting a water level in the water tank. Preparation, washing, rinsing, dehydration, and a series of laundry including drying,
In a drum type washing machine that performs the drying operation in one drum, a selection key is provided when using a detergent with a large amount of foam, and when the key is pressed, the water supply valve for drying is opened during the washing process to cool it. A drum-type dry washing machine comprising means for supplying water from a duct. 9. The control according to claim 8, wherein when the selection key is pressed, the washing time is also extended.
Drum type washing machine described. 10. The water level in the rinsing step is controlled to be higher than a predetermined value when the rotation speed of the intermediate dehydration after the washing is less than a predetermined value. Drum type washing machine. 11. The drum type dry washing machine according to claim 8 or 9, wherein when the number of rotations of the intermediate dehydration after the washing is less than a predetermined value, the number of rinses is controlled to increase. . 12. The display device according to claim 8, further comprising a display unit that indicates that when the selection key is pressed, control for using a detergent with a large amount of foam is performed.
Any one of the listed drum type washing machines. 13. The drum type dry washing machine according to claim 12, further comprising means for displaying on the display means that the washing time or the like has been extended by correcting the remaining time display.