JPH02128792A - Two-tub washing machine - Google Patents

Abstract

PURPOSE:To utilize effectively hot water in a dehydrating tub for sterilization of washed articles by providing a water tank and a heater for heating the water in the water tank to supply hot water produced by the heater to the dehydrating tub. CONSTITUTION:When water level in a water tank 11 reaches a predetermined one, it is detected by a water level sensor 14 to stop water supply. Water in the water tank 11 is heated by supplying current to a heater 17. When water temperature reaches a predetermined one, 65-70 deg.C in this case, it is detected by a temperature sensor 16 to stop the heating by the heater 17. Thereafter, current is supplied to a brake solenoid to release a dehydrating tub 9 from the damping and rotate said tank 9 with high speed for dehydration. Then, current is supplied to a pump motor 19 for a certain time to run a pump 18 so that hot water in the water tank 11 is supplied to the dehydrating tub 9. This hot water is applied to washing in said tub 9 to sterilize miscellaneous germs like colon bacilli on the washing.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a two-tub washing machine equipped with a thirst-generating function.

(Prior Art) Conventionally, in a two-tub type washing machine, tap water is generally used to wash clothes in a washing tub, and then the washed laundry is dehydrated in a spin-drying tub.

(Problem to be Solved by the Invention) By the way, in a two-tub washing machine, hot water may be used for washing, and in this case, hot water from the hot water supply equipment installed in the home may be introduced into the washing machine. I have to. However, it is necessary to place the washing machine near the hot water outlet of the hot water supply equipment, and there are considerable restrictions on the placement of the washing machine. It is possible to make the connection hose from the hot water outlet of the hot water supply equipment to the washing machine longer, but this poses a problem in that the hot water gets cold. Also,
If there is no hot water supply available, it is necessary to generate hot water as needed and transfer it to the washing machine, which is a hassle.

Also, when using leftover hot water from a bath, you need to wash your clothes in time for the time when the leftover hot water does not cool (H+).
Furthermore, there is also the problem that transferring the hot water requires a great deal of labor.

On the other hand, in a two-tub washing machine that receives hot water directly from the hot water supply equipment, hot water is supplied to the washing tank, but not to the spin-drying tank. Effective uses such as sterilization and wool washing have not been attempted.

That is, when laundry is washed, bacteria such as E. coli often remain attached to the laundry after it has been washed in a washing machine without being killed. In this case, if the laundry is dried in the sun, the germs will die, but if the weather is not good, the germs may not be killed because the laundry is dried indoors or under the eaves. Such sterilization is preferably performed at the end of washing.

Furthermore, when washing wool in a two-tank washing machine, lukewarm water is stored in the washing machine, and wool or laundry in general is washed in this lukewarm water. however,
When washing only wool, the capacity of the washing tank itself is large, so in order to secure the necessary water level, there is a problem that a large amount of lukewarm water is required even though the amount is small.

The present invention has been made in view of the above circumstances, and the first object is to provide a two-tub washing machine that can generate hot water by itself and that can effectively utilize the hot water in a dehydration tank. be.

A second object is to provide a two-tub washing machine that can generate hot water by itself and sterilize laundry in a dehydration tank.

The third object is to provide a two-tub washing machine that can generate hot water by itself and wash wool in a dehydration tank.

A fourth object is to provide a two-tub washing machine that can generate hot water by itself and can use hot water in either the washing tub or the spin-drying tub.

[Structure of the Invention] (Means for Solving the Problems) The first means for achieving the first object is to provide a water storage tank and a main body equipped with a washing tank and a dehydration tank with It is characterized in that a heater for heating water is provided, and hot water generated by the heater is supplied to the dehydration tank.

A second means for achieving the second purpose is to provide a main body equipped with a washing tank and a dehydration tank with a water storage tank and a heater that heats the water in the water storage tank, and to use the heater to heat hot water. It is characterized in that it generates hot water and supplies the hot water to the dehydration tank.

A third means for achieving the third purpose is to provide a water storage tank and a heater for heating the water in the water storage tank to the main body equipped with a washing tank and a dehydration tank, and use this heater to provide lukewarm water. The apparatus is configured to generate lukewarm water and supply this lukewarm water to a dehydration tank, and to store hot water in the dehydration tank, and to run the laundry in the dehydration tank by driving the dehydration tank in a washing mode. It is characterized in that it is washed in lukewarm water.

A fourth means for achieving the fourth purpose is to provide a water storage tank and a heater for heating water in the water storage tank to the main body equipped with a washing tank and a dehydration tank, and to generate water by this heater. It is characterized in that the heated hot water is switched and supplied to either the washing tank or the dehydration tank.

(Function) According to the first means, since the main body has a water storage tank as a water source and a heater as a hot water generating means, the washing machine can generate hot water by itself.

Since this hot water is supplied to the dehydration tank, it is possible to use this hot water to sterilize the laundry in the dehydration tank, to wash the dehydration tank itself with hot water, and to wash wool.

According to the second means, since the main body has a water storage tank as a water source and a heater as a hot water generating means, the washing machine can generate hot water by itself.

In addition, the heater generates hot water and supplies it to the dehydration tank, so if you store the laundry in the dehydration tank,
By pouring boiling water over the laundry, you can kill germs. Here, it is possible to try to kill germs on the laundry by supplying hot water to the washing tank and performing the washing inspection, but in this case, there is a concern that the user may take out the laundry containing hot water by hand. be done. In particular, in dual-tub washing machines, considering that the laundry is customarily washed in the washing tub and then transferred to the spin-drying tub for dehydration, the frequency of occurrence of such situations is high. .

However, according to the method of Section 2, since sterilization is performed using hot water in the dehydration tank, it is easy to continue the dehydration operation after that to remove the hot water and cool the laundry.
Therefore, it is possible to effectively prevent the user from coming into contact with hot water.

According to the third means, since the main body has a water storage tank as a water source and a heater as a thirst generating means, the washing machine can generate hot water by itself.

Furthermore, by supplying lukewarm water to a dehydration tank that can contain hot water and driving the dehydration tank in washing mode,
Since it can be washed with lukewarm water, it is suitable for washing woolen fabrics.Moreover, since lukewarm water is supplied to the dehydration tank, which has a smaller capacity than the washing tank, the amount of hot water required to wash woolen fabrics can be reduced. can be reduced.

According to the fourth means, since the main body has a water storage tank as a water source and a heater as a hot water generating means, the washing machine can generate hot water by itself.

In this case, if hot water is supplied to the washing tank, it is possible to improve the washing effect of general laundry, and if hot water is supplied to the dehydrating tank, the laundry in the dehydrating tank can be sterilized, and the hot water in the dehydrating tank itself can be used to sterilize the laundry. It becomes possible to wash and even wash wool.

(Embodiment) A first embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

First, in Figures 1 to 3, 1 is the main body of the two-tub washing machine, 1a is the outer box, 2 is the tank body forming the washing tank 3 and the dewatering tank 4, and 5 is the main body of the washing tank 3. A stirring body provided at the bottom, 6 a washing motor, 7 a mechanism section for transmitting the rotational force of the motor 6 to the stirring body 5, 8 a valve 8a for opening and closing a drain port (not shown) at the bottom of the washing tank 3 It is an overflow pipe with a

On the other hand, 9 is a dewatering tank disposed within the dehydrating tank 4, and 10 is a dewatering motor for rotationally driving the dehydrating tank 9. The dehydration tank 9 is formed so that its diameter gradually increases toward the upper end, and a dehydration hole 9a is formed only in the upper end portion. Therefore, when the dewatering tank 9 is rotated at high speed, it pumps up and dehydrates the water from the laundry, and when it is stationary or rotated at low speed, water or hot water can be stored inside.

Now, 11 is a water storage tank, which, as shown in FIG. 3, includes a tank body 11a and a tank l! ! flb, and is disposed at the rear of the dehydration receiving tank 4. This water storage tank 11 is formed to have approximately the same volume as the dehydration tank 9. This water tank 1
1 is formed with an air trap 12, and the pressure inside this air trap 12 is guided to a tank water level sensor 14 via a pressure tube 13. The water level in the water storage tank 11, especially the water supply level, is detected.

15 is a hose 15a for connecting tap water etc. into the water storage tank 11
An electromagnetic water supply valve 16 supplies water via the water storage tank 1.
This is a temperature sensor for detecting the temperature of water in the water. 1
Reference numeral 7 denotes a heater, which is connected to the tank Mllb so as to be located inside the water storage tank 11. 1
8 is a pump having a pump motor 19, which is disposed below the water storage tank 11. The water inlet 18a of this pump 18 is connected to the bottom of the water storage tank 11 via a connecting pipe 20, and the water outlet 18a is connected to the bottom of the water storage tank 11 through a connecting pipe 20.
One end of the hot water supply pipe 21 is connected to b, and the other end of the hot water supply pipe 21, the water outlet end 21a, faces into the dehydration tank 9 through the laundry inlet/outlet 22a of the cover 22 at the top of the dehydration receiving tank 4. There is. In addition, in Figure 2, 23
24 is an electromagnetic water supply valve for supplying water into the washing tank 3, and a drainage vibrator connected to drain ports (not shown) of the washing tank 3 and the dewatering tank 4.

Next, in FIG. 4, reference numeral 25 denotes an operation control circuit consisting of a microcomputer, which receives switch signals from various switches 26 (not shown).

Clock pulses from the clock pulse generation circuit 27 and water level detection results from the tank water level sensor 14.

The temperature detection result from the temperature sensor 16 is provided. Based on these inputs, the operation control circuit 25 controls the loads of the washing motor 6, dewatering motor 10° water supply valve 15, etc. according to the internal operation program. Heater 17
．． Pump motor 19. Water supply valve 23. The brake solenoids 27 are each driven and controlled via a drive circuit, and thereby,
Wash and dehydrate.

Control regarding sterilization and the like, which will be described later, is performed. Note that the brake solenoid 27 applies braking to the dehydration tank 9.

The operations related to the above-mentioned sterilization etc. will now be described. Now, the laundry after washing (not dehydrated) is stored in the dehydration tank 9 in advance, and when the sterilization course setting switch (not shown) is set among the various switches 26, the operation control circuit 25 is activated as shown in FIG. Control each square load using the time chart shown. First, the water supply valve 15 is opened to supply tap water into the water storage tank 11, and when the water level in the water storage tank 11 reaches a predetermined water level (this is detected based on the detection result from the water level sensor 14). ), stop this water supply. Thereafter, the water in the water storage tank 11 is heated by energizing the heater 17. When the temperature of this water reaches a predetermined temperature, in this case 65 to 70°C (this is the temperature sensor 16
), this heater 1
7. Stop heating. Thereafter, the brake solenoid 27 is energized to release the brake on the dehydration tank 9, and the dehydration tank 9 is primarily rotated at high speed to perform dehydration.

Thereafter, the pump motor 19 is energized for a certain period of time to operate the pump 18, thereby supplying the water (hot water in this case) in the water storage tank 11 to the dehydration tank 9.

The hot water splashes onto the laundry in the dehydration tank 9, and as a result, bacteria such as E. coli on the laundry are killed. Thereafter, the dehydration motor 10 is energized and driven to rotate the dehydration tank 9 at high speed for a certain period of time (in the same operating mode as the dehydration operation). This operation shakes off the hot water contained in the laundry. Such hot water supply and hot water shake-off operation are alternately performed a predetermined number of times. Thereby, laundry can be effectively sterilized.

Here, it is possible to supply hot water to the washing tank 3 to kill germs on the laundry on the washing tank 3 side, but in this case,
There is a concern that users may manually take out laundry containing hot water. In particular, in a two-tub type washing machine, the laundry is customarily washed in the washing tank 3 and then transferred to the dehydration tank 9 for removing detergent after washing with detergent or for dehydration after rinsing. The frequency with which such events occur increases when taking into account the dehydration caused by dehydration.

However, according to this embodiment, since sterilization is carried out using hot water in the dehydration tank 9, it is easy to continue the dehydration operation after that to remove the hot water and cool the laundry, so that the user can easily touch the hot water. can be effectively eliminated.

Next, control regarding wool washing will be explained with reference to FIG. 6. When the wool washing course setting switch among the various switches 26 is operated, the operation control circuit 25 first
The water supply valve 15 is opened B'i to supply tap water into the water storage tank 11, and when the water level in the water storage tank 11 reaches a predetermined water level (this is determined by the detection result from the water level sensor 14). detected), this water supply is stopped. Thereafter, the water in the water storage tank 11 is heated by energizing the heater 17. When the temperature of this water reaches a predetermined temperature, in this case 35 to 40°C (this is the temperature of the humidity sensor 1
This heater 1 (detected based on the detection result from 6)
7. Stop heating. After this, the pump motor 19 is energized for a certain period of time to operate the pump 18, thereby removing the water (in this case, lukewarm water) in the water storage tank 11.
supply within. In this case, since the dehydration tank 9 is substantially non-porous, lukewarm water is stored in the dehydration tank 9. Then, the brake solenoid 27 is energized to release the brake on the dehydration tank 9, and the dehydration tank 9 is driven in the washing mode (in this case, the intermittent drive mode). By intermittent rotation of the dehydration tank 9, the laundry inside (detergent has been added in advance) is washed with a weak cleaning action suitable for wool fabrics, and also with lukewarm water suitable for wool fabrics. After this intermittent operation, the dehydration tank 9 is rotated at high speed for a certain period of time to perform dehydration. At the time of detergent washing and dehydration, water is supplied into the water storage tank 11 and the water is heated in parallel.

Then, in order to rinse the laundry made of wool fabric, hot water is supplied to the dehydration tank 9 again and the dehydration tank 9 is driven in the washing mode. As a result, rinsing is carried out with a mild cleaning action suitable for woolen fabrics, but also with lukewarm water suitable for wool. Finally, the wool is dehydrated to complete the wool washing process. In this case, since the capacity of the dehydration tank 9 is inherently smaller than that of the washing tank 3, a sufficient water level can be obtained even with a small amount of hot water even when washing wool with a small volume, thus reducing the amount of hot water used. can be reduced.

In addition, when washing wool in such a dehydration tank 9, it is important to configure the dehydration tank 9 so that it can contain hot water, and in the above embodiment, the dehydration tank 9 is made almost non-porous. Although this was achieved by forming the dewatering tank 4, it is not necessary to have this configuration. For example, the dewatering tank may be formed in a porous shape as a whole, and the drain port of the dewatering tank 4 can be opened and closed with a drain valve. A configuration may be adopted in which hot water can be stored in the dehydration tank 9 by storing hot water in the dehydration receiving tank 4.

FIG. 7 shows a second embodiment of the present invention. In this embodiment, the control regarding sterilization is not performed in the mode of alternate execution of hot water supply (hot water supply) and boiling water shake-off operation described above, but in which hot water is continuously supplied. The mode is such that after executing the above operation, a swing-out operation is executed. The same effect as described above can also be obtained by this.

Next, a third embodiment of the present invention will be explained with reference to FIGS. 8 to 11, with respect to different parts of the first embodiment.

First, in FIGS. 8 to 10, the hot water pipe 21
The water outlet end 21a is connected to a distributor 31 provided inside the operation box 3o. It is now open to the public. That is,
When the operating lever 32 is operated to the position Pa, the pouring port 31a is opened, and when the operating lever 32 is operated to the position pb, the pouring port 31b is opened. However,
The hot water discharged from the hot water outlet 31a is supplied to the dehydration tank 9 through one passage 33a of the hot water case 33, and then is supplied to the dehydration tank 9 through the hot water outlet 31b.
The hot water discharged from the hot water flows through the other passage 33b of the hot water supply case 33.
The water is supplied to the washing tank 3 through. Furthermore, the hot water supply case 3
Tap water supplied from an electromagnetic water supply valve 23 for supplying water to the washing tank 3 is also supplied to the other passage 33b of the washing tank 3. 34 shown in FIG. 10 is a first water level sensor;
35 is a second water level sensor, and the first water level sensor 34
is for detecting a first water level that is considerably lower than the normal washing water level. Further, the second water level sensor 35 is for detecting a second water level higher than the first water level.

Reference numeral 36 shown in FIG. 11 is an operation control circuit composed of a microcomputer, and its functions will become clear in the following explanation of its operation.

In this embodiment, from hot water generation to hot water use, sterilization is performed on the dehydration tank 9 side, a course of washing using hot water in the washing tank 3, and sterilization on the washing tank 3 side are provided.

First, the case where sterilization is performed on the dehydration tank 9 side will be described.

First, operate the operation lever 32 to the position Pa side and operate the dehydration side sterilization course setting switch (not shown).
As in the embodiment, water is supplied into the water storage tank 11, the water is heated (65 to 70°C), dehydrated, and dehydrated h! The hot water supply to f9 and the shaking off are repeated.

In addition, when washing using hot water in the washing tank 3 side, by operating the operation lever 32 to the position PB side and operating the dry washing course setting switch (not shown), the water storage tank 3
1 and heat the water to a predetermined temperature.

At the same time, the water supply valve 23 is opened to supply water into the washing tank 3, and once the water has been supplied to the first water level, this is stopped. Then, the pump 18 is operated to supply hot water into the washing tank 3 up to the second water level. In this case, since water is supplied at the beginning, the temperature of the hot water becomes appropriate due to the mixture of dry water and water. After this, normal washing is performed at the second water level. As a result, it is possible to improve the washing effect of general laundry.

In addition, when sterilization is performed on the washing tank 3 side, by operating the operating lever 32 to the position pb side and operating the washing side sterilization course setting switch (not shown), water is supplied into the water storage tank 11 and the water is Heat to a specified temperature (a fairly high temperature). At the same time, the water supply valve 23 is opened to supply water into the washing tank 3, and once the water has been supplied to the first water level, this is stopped.

Then, the pump 18 is operated to supply hot water into the washing tank 3. This hot water supply sterilizes the laundry. In this case, since water is initially supplied, there is no heat exchange in the washing tank 3.

After this, if water is supplied again to lower the temperature of the water, it is safe and convenient for subsequent washing.

Note that the present invention is not limited to the above-mentioned embodiments; for example, the temperature of the hot water may be changed as appropriate and the dehydration tank may be cleaned with the hot water, without departing from the scope of the invention. This can be implemented with various modifications.

[Effects of the Invention] As is clear from the above description, the present invention can provide the following effects.

According to the two-tub washing machine of claim 1, the washing machine can generate hot water by itself, and therefore, the arrangement of the washing machine is not restricted due to the relationship with the domestic hot water supply equipment, and there are no other restrictions. There are various conveniences, and furthermore, the hot water can be effectively used in the dehydration tank.

According to the two-tank washing machine of the second aspect, sterilization can be performed in the dehydration tank, and there are effects such as being able to effectively eliminate contact with hot water.

According to the two-tank washing machine of the third aspect, wool can be washed in the dehydration tank, and in this case, there is an effect that the amount of hot water is small.

According to the two-tub washing machine according to claim 4, it is possible to sterilize in the dehydration tank and also wash wool, and furthermore, the washing tank can wash general laundry. It is possible to further increase the a-effectiveness of hot water.

[Brief explanation of drawings]

1 to 6 show a first embodiment of the present invention, in which FIG. 1 is a perspective view of the washing machine, FIG. 2 is a longitudinal sectional front view, and FIG. 3 is a longitudinal sectional view of the dehydration tank side. A side view, FIG. 4 is a block diagram showing the electrical configuration, and FIGS. 5 and 6 are time charts showing different control contents. FIG. 7 shows the second embodiment of the present invention.
FIG. 5 is a diagram corresponding to FIG. 5 showing an embodiment of the present invention. Figures 8 to 1
1 shows a third embodiment of the present invention, FIG. 8 is a vertical cross-sectional rear view of the washing machine seen from the rear side, FIG. 9 is an enlarged cross-sectional view taken along line ■-■ in FIG. FIG. 10 is a longitudinal sectional side view, and FIG. 11 is a view equivalent to FIG. 4. In the figure, 3 is a washing tank, 4 is a dewatering tank, 6 is a washing motor, and 9
is a dehydration tank, o is a dehydration motor, 11 is a water storage tank, 14
is a tank water level sensor, 15 is an electromagnetic water supply valve, 16 is a temperature sensor, 17 is a heater (heater), 18 is a pump, 19
is a pump motor, 25 is an operation control circuit, 31 is a distributor,
33 is a hot water supply case, 34 is a first water level sensor, and 35 is a second water level sensor.

Claims (1)

[Claims] 1. A main body equipped with a washing tank and a dehydration tank is provided with a water storage tank and a heater for heating the water in the water storage tank,
A two-tank washing machine characterized in that hot water generated by the heater is supplied to the dehydration tank. 2. A water storage tank and a heater for heating the water in this water storage tank are provided for the main body equipped with a washing tank and a dehydration tank,
A two-tank washing machine characterized in that hot water is generated by the heater and the hot water is supplied to the dehydration tank. 3. A water storage tank and a heater for heating the water in this water storage tank are provided for the main body equipped with a washing tank and a dehydration tank,
The heater generates lukewarm water and supplies the lukewarm water to a dehydration tank, and the dehydration tank is configured to be able to store hot water, and the dehydration tank is driven in a wash mode to remove the water from the dehydration tank. A two-tub washing machine characterized in that laundry is washed in the warm water inside the washing machine. 4. A water storage tank and a heater for heating the water in this water storage tank are provided for the main body equipped with a washing tank and a dehydration tank,
A two-tank washing machine characterized in that the hot water generated by the heater is switched and supplied to either the washing tank or the dehydration tank.