JP6779401B2 - Washing and drying machine - Google Patents

Description

The present invention relates to a washer / dryer capable of washing blankets and futons.

In order to clean blankets and duvets that often come into direct contact with human skin, it is common to wash them, dry them in the sun, or suck them up with a vacuum cleaner. Although it is possible to remove mite droppings and carcasses by washing and cleaning, it is not easy to kill mites by washing or sun-drying, and mites clinging to thick blankets and duvet fibers It is not easy to suck up.

Experimental results have been published showing that house dust mites, which are the most common indoors, are sensitive to heat and are 100% killed by holding a temperature of 50 ° C or higher for 20 minutes.

Patent Document 1 describes a washing machine having a function of killing mites by such heat. In Patent Document 1, "a washing tub for storing and washing laundry and a steam generating means or hot water supply means for supplying steam to the washing tub are provided, and the steam generating means or hot water supply means is used for washing. A washing machine with a sterilization / tick-killing function that operates after the clothes are put into the tub until water is supplied, supplies steam or hot water from above the washing tub to the clothes, and then starts the normal washing process. ".

Further, Patent Document 2 describes a washing machine having a function of washing blankets and futons. In Patent Document 2, "an outer tub supported by vibration isolation in an outer frame, a washing / dehydrating tub arranged in the outer tub, a rotary wing arranged in the washing / dehydrating tub, and the outer frame are described. In a dehydration washing machine with an operation unit and a display unit on the top, when the course for washing the futon is selected in the operation unit, the water level to be supplied is the water level higher than the high water level for washing the laundry of the rated capacity. Water is supplied to the dehydration tub, the high water level for washing the laundry of the rated capacity is displayed on the display unit, and the washing / dehydrating tub and the rotary blade are integrally rotated in one direction for washing. A dehydration washing machine characterized by. "

Japanese Patent No. 2639045 Japanese Patent No. 3232892

The purpose is to sterilize and kill mites with steam or hot water, but the effect of steam penetration can hardly be expected inside or below the folded blankets and duvets.

In addition, the conventional course for washing blankets in vertical washing machines is to wash blankets and futons by supplying water to the water level at which the blankets are immersed and rotating the washing / dehydrating tub and the rotary wings in one direction. Therefore, since the mechanical force acting on the blanket and the futon is small, it cannot be expected to sufficiently remove the dead mites.

Therefore, an object of the present invention is to provide a washer / dryer capable of heating laundry such as a blanket, which is sensitive to heat, to kill mites and efficiently removing the killed mites from the laundry. There is.

In order to achieve the above object, the washing / drying machine of the present invention has a housing, an outer tub supported inside the housing to store washing water inside, and a washing tub rotatably supported inside the outer tub to store laundry. And, the rotary wing rotatably installed at the bottom of the washing tub, the driving means for driving the washing tub and the rotary wing, the blowing means for blowing air into the washing tub, and the air sent out by the blowing means are heated. It is equipped with a heating means and a water supply means for supplying water into the washing tub. After performing a heat treatment for sending warm air into the washing tub, water is supplied and the rotary blades are moved while the washing tub is stationary. The structure is such that drainage is performed after the operation of rotating.

According to the present invention, when a laundry such as a blanket, which is sensitive to heat, is heated to kill mites, the mites are subjected to mechanical force during a washing process or a rinsing process performed after the mites are killed. It is possible to efficiently remove the carcasses of.

Longitudinal sectional view showing the structure of the washer / dryer according to the embodiment of the present invention. Functional configuration diagram of the washer / dryer according to the embodiment of the present invention Basic control flowchart of tick countermeasure course according to the embodiment of the present invention Basic control flowchart of tick countermeasure course according to another embodiment of the present invention Flow chart of control of heating and humidifying treatment according to embodiment of the present invention Blanket temperature distribution according to the embodiment of the present invention Explanatory drawing of operation and drive mode according to embodiment of this invention A vertical sectional view showing the structure of a washer / dryer according to another embodiment of the present invention.

Hereinafter, the washer / dryer according to the embodiment of the present invention will be described with reference to the drawings. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1, 2, 3, 4, 4, 5, 6, and 7.

FIG. 1 is a vertical cross-sectional view showing the structure of the washer / dryer according to the embodiment of the present invention, and FIG. 2 is a functional configuration diagram of the washer / dryer according to the embodiment of the present invention.

Inside the outer frame 1 of the washer / dryer, the outer tub 2 for storing washing water is vibration-proof supported by four hanging members (not shown) hanging from the upper four corners of the outer frame 1, and inside the outer frame 1. It is arranged vertically in the center of. The washing tub 3 arranged in the outer tub 2 is formed of a bottomed cylindrical shape long in the axial direction by using a stainless steel plate. A through hole 7 for water passage and ventilation is formed in the peripheral wall of the washing tub 3.

At the center of the inner bottom surface of the washing tub 3, a rotary blade 6 for stirring and washing the laundry, rinsing, drying, and the like is rotatably provided. The rotary blade 6 is rotationally driven by the drive device 8 and repeatedly performs forward rotation / reverse rotation to perform washing operation, rinsing operation, drying operation, and the like. During the dehydration operation, the washing tub 3 and the rotary blade 6 rotate integrally at high speed to dehydrate the water contained in the laundry.

The drive device 8 incorporates a drive motor using a reversible rotary condenser phase-dividing single-phase induction motor, an inverter drive motor, an electromagnetically operated clutch mechanism, and a planetary gear reduction mechanism, and controls the drive motor and the electromagnetically operated clutch mechanism. As a result, the stirring drive mode (first drive mode) in which the rotary wing 6 is repeatedly rotated forward and reverse (reciprocating) while the washing tub 3 is stationary, and the washing tub 3 and the rotary wing 6 are integrally rotated in the same direction. A dehydration drive mode (second drive mode) in which the washing tub 3 and the stirring blade 6 are not coupled, and a neutral drive mode (third drive) in which the washing tub 3 rotates in the opposite direction due to the reaction when the stirring blade 6 is rotated. It has a drive function that selectively executes the form).

A circulation duct 18 connected to the outer tub 2 by an exhaust connection portion 24 is installed on the rear side portion in the outer frame 1, and evaporates from the laundry in the air passage of the circulation duct 18 in the drying process. A water-cooled dehumidifying plate 20 for cooling warm air containing moisture with cooling water to dehumidify it is installed, and a lint filter (not shown) for removing lint and the like contained in circulating warm air is attached and detached. It is installed as possible. As shown by the white arrow, the flow of warm air passes from the outer tank 2 through the exhaust connection portion 24, goes upward from the bottom of the circulation duct 18, and after that, the blower 19 and the blower 19 are cooled and dehumidified. A heater 17 for heating the circulating warm air of the above is provided. The air heated by the heater 17 passes through the air duct 26 and supplies warm air to the washing tub 3. A mist mesh 28 formed by weaving fine metal wires into a net shape of a substantially hemisphere is attached to a hot air supply port supplied to the washing tub 3. Above the mist mesh 28, a mist nozzle 27 projects downward into the air duct 26. When tap water is supplied to the mist nozzle 27, the tap water jetted downward from the mist nozzle 27 collides with the mist mesh 28, and the tap water becomes finer (mist) and sprayed into the washing tub 3. Will be done.

It is desirable that the mesh of the mist mesh 28 is coarser than that of the water supply filter (not shown) provided inside the water supply hose connection port 10. This makes it possible to prevent the mist mesh 28 from being clogged by dust in tap water. Further, by arranging the mist mesh 28 below the mist nozzle 27, the water jetted from the mist nozzle 27 is accelerated by the gravitational acceleration and then collides with the mist mesh 28, which further promotes the miniaturization of water. can do.

A hot air temperature sensor 21 that detects the temperature of the heated hot air is installed in the air duct 26, and is used to control the heating of the heater 17. In addition, a humidity sensor (not shown) that is sensitive to the humidity of the circulating air is installed in the air passage.

A circulation temperature sensor 22 for detecting the temperature of hot air discharged from the washing tub 3 and circulating in the circulation duct 18 is installed in the circulation duct 18, and a drainage temperature sensor 23 is installed in the exhaust connection portion 24 at a position where cooling water flows. Install, cool and detect the temperature of the cooling water including the condensed and recovered dew water.

During the washing operation, the circulation temperature sensor 22 or the drainage temperature sensor 23 detects the temperature of the washing water or the rinsing water, and is used to change the control contents of the washing process and the rinsing process according to the detected water temperature. It is also possible to do.

The control unit 9 is mainly composed of a microcomputer 37.

The microcomputer 37 has a function of controlling the display panel 16, the water supply unit 11, and the drain valve 14. Further, the motor 32 of the drive device 8 is driven and controlled via the motor drive circuit 31, the clutch mechanism 34 is switched via the clutch drive circuit 33, and the heater switch 35 is controlled to be ON / OFF to energize the heater 17. It has a function of controlling, controlling strong / weak / off, and controlling the blower 19 via the fan drive circuit 36.

FIG. 3 is a basic control flowchart of the tick countermeasure course according to the embodiment of the present invention executed by the microcomputer 37 in the control unit 9.

FIG. 7 is an explanatory diagram of a drive mode in which the microcomputer 37 in the control unit 9 controls the clutch mechanism 34.

When the power switch (not shown) is turned on, the microcomputer 37 executes the following control process.

Step S01
When the power is turned on, the clutch mechanism 34 is controlled to the position at the start of washing after the control processing system is initialized, and the drain valve 14 is closed if it is not closed.

Step S02
Laundry, blankets and futons are put into the washing tub 3, and the course selection button (not shown) of the operation switch 30 is operated to make initial settings. When the start button switch is pressed, the operation control process is executed. To do. In the initial setting here, the mite countermeasure course according to the embodiment of the present invention is selected and set.

Step S03
The main water supply electromagnetic valve (not shown) of the water supply unit 11 is opened to start the supply of tap water. This washing water supply supplies water up to a set amount of water, but the clutch mechanism 34 is controlled to the dehydration position, and the washing tub 3 and the rotary wing 6 are integrally rotated in the same direction at a low speed to form a blanket that is laundry. Controls to absorb water quickly and the futon.

Step S04
In a washer-dryer having a washing tub 3 that rotates about a vertical axis, tap water supplied to a set amount of water dilutes the detergent to a detergent concentration preferable for washing, and the washing liquid is mixed with laundry. The blankets and duvets are in a soaked state. In this state, the drive device 8 is controlled, the clutch mechanism 34 is set to the dehydration drive mode, the washing tub 3 and the rotary wing 6 are integrally rotated, and the tub rotation washing or the clutch mechanism 34 is set to the neutral drive mode to rotate. The tub wing washing that reversely rotates the washing tub 3 by the reaction of rotating the wing 6 is selected and executed.

Rotating tank washing is suitable for washing blankets and duvets without damaging them, but the mechanical cleaning power given to blankets and duvets is small.

Tank wing washing has the advantages of both bath rotation washing and stirring washing, and can provide appropriate mechanical cleaning power without damaging the blanket or duvet.

In a so-called drum-type washer-dryer having a washing tub 3 that rotates about a horizontal axis or an inclined axis, tap water is not supplied until the blanket or duvet that is the laundry is immersed, and the washing tub 3 is rotated forward / reverse. Then, lift the blanket or duvet, which is the laundry, to the top and drop it to wash it.

Step S05
The drain valve 14 is opened to drain the washing liquid to the outside of the machine. In this washing drainage operation, the clutch mechanism 34 is controlled to the dehydration drive mode during or after the drainage.

Step S06
After the drainage is completed, the washing tub 3 and the rotary wing 6 are integrally rotated at high speed in one direction to centrifugally dehydrate the washing liquid contained in the blanket or duvet which is the laundry.

Step S07
The drain valve 14 is closed, and the main water supply solenoid valve of the water supply unit 11 is opened to supply tap water to a set amount of water.

Step S08
The drive device 8 is controlled to perform one rinse operation. In some cases, one rinse operation may be skipped in order to shorten the operation time.

Step S09
The drain valve 14 is opened to drain the rinse water to the outside of the machine. In this rinse 1 drainage operation, the clutch mechanism 34 is controlled to the dehydration drive mode during drainage.

Step S10
By integrally rotating the washing tub 3 and the rotor 6 in one direction at high speed, the rinse water contained in the blanket or futon, which is the laundry, is centrifugally dehydrated.

Step S11
The drain valve 14 is closed, and the control unit 9 controls the blower 19, the heater 17, and the drive device 8 to execute the heating and humidifying treatment.

Specifically, as shown in the flowchart of FIG. 5, the drive device 8 is controlled to rotate the washing tub 3 at a low speed (step S501). Then, the control unit 9 controls the fan drive circuit 36 and operates the blower 19 to supply air into the washing tub 3 (step S502).

After that, the control unit 9 controls the heater switch 35 to be ON to strongly operate the heater 17 (step S503). The warm air temperature sensor 21 installed in the blower duct 26 heats the blanket or duvet that is the laundry until the warm air temperature reaches 80 ° C. or higher (step S504). When the hot air temperature sensor 21 detects that the hot air temperature exceeds 80 ° C., the control unit 9 controls the water supply unit 11 to intermittently supply tap water from the mist nozzle 27 (step S505). ..

The mist water supply solenoid valve (not shown) of the water supply unit 11 can supply 0.2 to 0.5 L of tap water per minute to the mist nozzle 27, but in this embodiment, a blanket or a futon which is laundry is used. Since it is necessary to maintain the temperature at which ticks are killed while preventing the fibers themselves from being deformed by heat and the texture from becoming stiff, intermittent water supply that turns off the mist water supply solenoid valve for 10 seconds and then turns it off for 170 seconds. Do. This ON / OFF time allocation is one control plan, and by setting it according to each washing / drying machine, it is possible to prevent the temperature of the blanket or duvet, which is the laundry, from rising too high.

The circulation temperature sensor 22 installed in the circulation duct 18 heats blankets and futons, which are laundry, while intermittently spraying mist until the temperature of the warm air circulating in the circulation duct 18 exceeds 50 ° C. Humidification is continued (step S506).

When the circulation temperature sensor 22 detects that the circulation temperature exceeds 50 ° C., the control unit 9 turns off the mist water supply solenoid valve of the water supply unit 11 and stops the intermittent spraying of the mist (step S507). After that, the control unit 9 controls the heater switch 35 to weakly operate the heater 17 (step S508). At the same time as starting the weak operation of the heater 17, the weak operation timer is started (step S509), and the weak operation is continued until 30 minutes have elapsed (step S510). This is a process for holding blankets and futons, which are laundry, at a temperature of 50 ° C. or higher for 20 minutes in order to kill mites, and the laundry put into the washing tub 3 rotating about the vertical axis. This is a response to the fact that the temperature of the blanket and the lower part of the futon does not rise easily. In a washer / dryer having a washing tub 3 that rotates about a horizontal axis or an inclined axis, blankets and futons that are laundry can be changed in position by rotating the washing tub 3, so that weak operation can be skipped. It is possible. When the weak operation timer has elapsed for 30 minutes, the control unit 9 turns off the heater switch 35 to stop heating by the heater 17 (step S511). At the same time as stopping the heating by the heater 17, the blower operation timer is started (step S512). The blower 19 is operated until the blower operation has elapsed for 15 minutes (step S513), and after the blower operation has passed for 15 minutes, the control unit 9 controls the fan drive circuit 36 and stops the operation of the blower 19 (step S514). ..

After stopping the blowing operation, the control unit 9 controls the drive device 8 and stops the rotation of the washing tub 3 (step S515).

Step S12
The main water supply solenoid valve of the water supply unit 11 is opened to supply tap water up to the set amount of water.

Step S13
The drive device 8 is controlled to perform the rinse 2 operation.

In the rinse 2 operation, the clutch mechanism 34 is set to the stirring drive mode and the washing tub 3 is rotated in a stationary state in order to apply the mechanical force for removing the dead tick carcasses to the blanket or duvet which is the laundry. Stirring washing that rotates the wing 6 in the forward / reverse direction and tub wing washing that reversely rotates the washing tub 3 by the reaction of rotating the rotary wing 6 with the clutch mechanism 34 set to the neutral drive mode are selected and executed.

Step S14
The rinse water is drained to the outside of the machine in the same manner as in step S09.

Step S15
In the same manner as in step S10, the rinse water contained in the blanket or futon that is the laundry is centrifugally dehydrated. Hereinafter, steps S16, S17, and S18 are similarly executed, but these may be omitted in some cases.

Step S19
Blankets and duvets, which are laundry that has been thoroughly rinsed, are sufficiently centrifugally dehydrated by this final dehydration.

In FIG. 4, the basic control is the same as the flowchart of FIG. 3, although there is a difference that the heating / humidifying treatment (step S11) is executed before the washing water supply (step S03).

FIG. 6 is a diagram for briefly explaining the temperature distribution of the blanket, and the cooling effect of the heat / humidification treatment will be described with reference to this figure.

(A) shows the heat treatment when the fine water was not intermittently supplied into the washing tub 3, and (b) was the heat humidification treatment by intermittently supplying the fine water. Show the case.

In the section tA, the heater 17 is strongly operated, in the section tB, the heater 17 is operated weakly, and in the section tC, the heater 17 is turned off.

The blankets and duvets that are the laundry put into the washing tub 3 that rotates about the vertical axis have a temperature change similar to the temperature change T1 on the upper surface near the place where warm air is supplied, and reach 50 ° C. at point A. Exceed.
On the other hand, in the lower part of the washing tub 3, the temperature changes like the temperature change T2, and the heating time to the point B exceeding 50 ° C. becomes long. Therefore, the temperature change T1 continues to be heated further than the point A, and the temperature rises rapidly as the water content in the blanket decreases, reaches the maximum temperature at the point C, and the fibers of the blanket are thermally deformed. It ends up.

When the heating and humidifying treatment according to this embodiment is executed, tap water is intermittently supplied from the mist nozzle 27 when the warm air temperature exceeds 80 ° C. (line M). As a result, the temperature rise from the point A exceeding 50 ° C. on the upper surface near the place where the warm air is supplied becomes gentle. Further, in the lower part of the washing tub 3, the temperature change T2 exceeds 50 ° C. at the point B, and the temperature continues to rise thereafter. In the section tB in which the heater 17 is operated weakly, the temperature change T1 is almost flat or gradually rises. The heat and humidification treatment according to this example does not exceed 60 ° C. On the other hand, the temperature change T2 continues to rise even in the weak operation section tB, and further keeps a gradual temperature rise even in the blower operation section tC, and can maintain 50 ° C. or higher for 20 minutes or longer.

As described above, according to this embodiment, it is possible to prevent the temperature of the laundry from rising too much by appropriately cooling and humidifying the laundry, and to efficiently kill mites by maintaining a constant temperature. It will be possible.

Further, by using mist in the above cooling treatment, it is possible to suppress a sudden drop in temperature and control the temperature more appropriately.

FIG. 8 is a vertical sectional view showing the structure of the washer / dryer according to another embodiment of the present invention, and the heat treatment in the second embodiment is performed instead of supplying warm air into the washing tub 3 as in the first embodiment. In addition, a water supply heater 38 is installed in the pipe that supplies water from the water supply unit 11 into the washing tub 3, and by supplying heated water into the washing tub 3, blankets and futons that are laundry are 20 at 50 ° C. or higher. The difference is that it is held for a minute to effectively kill the mites.

Instead of supplying water while heating the water, a heater (not shown) for heating the water is installed between the outer tub 2 and the washing tub 3 to heat the supplied water, and the blanket or futon that is the laundry is used. It is also possible to hold the water at 50 ° C. or higher for 20 minutes.

In the case of a so-called vertical type washer-dryer, the amount of water for washing blankets and duvets, which are laundry, is large, the time for heating the water is long, or the amount of power consumption is large. It is more effective to heat the blanket or duvet, which is the laundry, in a dry state or after dehydrating the water contained in the laundry with warm air.

1 Outer frame (housing)
2 Outer tub 3 Washing tub 6 Rotating blade 8 Drive device (drive unit)
9 Control unit 17 Heater (heating means)
19 Blower (blower supply means)
20 Water-cooled dehumidifying plate (water-cooled dehumidifying means)
21 Warm air temperature sensor 22 Circulation temperature sensor 27 Mist nozzle (mist spraying means)
28 Mist mesh (miniaturization member, mist spraying means)

Claims (1)

With the housing
An outer tub that is supported inside the housing and stores washing water inside
A washing tub that is rotatably supported in the outer tub and stores laundry,
Rotor blades rotatably installed at the bottom of the washing tub,
The driving means for driving the washing tub and the rotor blades,
Blower means for sending air into the washing tub and
A heating means for heating the air sent out by the blower means and
A water supply means for supplying water into the washing tub is provided.
After executing the heat treatment for sending warm air into the washing tub, water is supplied, and the rotary blades are rotated while the washing tub is stationary, and then drainage is performed. Washing and drying machine.

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