JP2021164551A - Washing machine - Google Patents

Abstract

To provide a washing machine which suppresses an agitation blade idling without coming into contact with laundry, which suppresses entanglement of laundry after the final dewatering finishes, and in which wrinkles and damage hardly occur in laundry.SOLUTION: A washing machine includes: a housing 1; an outer tub 10 supported in the housing 1 in a vibration-proof manner, and for storing washing water inside; a washing and dewatering tub 9 which is supported in the outer tub 10 so as to rotate, and in which laundry is stored; a drive part for rotationally driving the washing and dewatering tub 9; a blower part for blowing air into the washing and dewatering tub 9; a blowout port 54 for blowing out the air from the blower part from the lower side of the washing and dewatering tub to the upper side; and a control part for controlling the drive part and the blower part, and for controlling each step of a washing step, a rinsing step, and a dewatering step. After the dewatering step, the control part performs a peeling step of rotationally driving the washing and dewatering tub 9 in a single direction, and blowing the air from the blowout port 54 to the washing and dewatering tub 9.SELECTED DRAWING: Figure 2

Description

The present invention relates to a washing machine for washing laundry.

Generally, a washer / dryer is provided with processes such as washing, rinsing, dehydration, and drying as an automatic operation course. Here, in dehydration, clothes are dehydrated by centrifugal force by rotationally driving the washing / dehydrating tub, but there is a problem that the clothes stick to the tub wall in the washing / dehydrating tub due to the centrifugal force and it is difficult to take out the clothes. .. Further, if the clothes are dried in a state of being stuck to the tub wall of the washing / dehydrating tank after the final dehydration, there is a problem that the clothes are entangled at the start of drying and the clothes are wrinkled or damaged.

In order to facilitate the removal of clothes after the final dehydration, Patent Document 1 describes that the stirring blade is driven to loosen the cloth after the final dehydration to prevent the clothes from being entangled.

Japanese Unexamined Patent Publication No. 2003-31107

However, according to the technique disclosed in Patent Document 1, even if the stirring blade is rotationally driven after the final dehydration, depending on the degree of sticking of the clothes, when the clothes in the washing / dehydrating tank stick above the stirring blade, It is not considered that the stirring blade slips without contacting the clothes. Further, since the attached clothes are peeled off by applying a mechanical force, there is a problem that the clothes are entangled and wrinkles or damages occur in the clothes.

An object of the present invention is to provide a washing machine that prevents the stirring blades from slipping without coming into contact with the laundry, suppresses entanglement of the laundry after the final dehydration, and is less likely to cause wrinkles or pain in the laundry. Is what you do.

In order to achieve the above object, the washing machine of the present invention has a housing, an outer tub that is vibration-proof supported inside the housing and stores washing water inside, and an outer tub that is rotatably supported and accommodates laundry. A washing / dehydrating tub, a driving unit that rotationally drives the washing / dehydrating tub, a blower that blows air into the washing / dehydrating tub, and a blowout that blows air from the blower from above to below the washing / dehydrating tub. It has a control unit that controls the mouth, the drive unit, and the blower unit, and controls each process of the washing process, the rinsing process, and the dehydration process. The structure is such that the washing and dehydration tub is driven by rotation and the air is blown out from the outlet to the washing and dehydration tub.

According to the present invention, there is provided a washing machine that prevents the stirring blades from slipping without contacting the laundry, suppresses entanglement of the laundry after the final dehydration, and is less likely to cause wrinkles or pain in the laundry. can.

It is a schematic diagram which shows the whole structure of the washer-dryer of this invention. It is a schematic diagram which shows the whole structure of the washer-dryer of this invention, and the clothes after the final dehydration. It is a perspective view of the stirring blade in the washer-dryer shown in FIG. It is a vertical sectional side view which shows the internal structure of the drive device in the washer-dryer shown in FIG. It is a figure which showed the air volume of the wind which changes step by step in the peeling process of this invention. It is a figure which showed the wind speed of the wind which changes step by step in the peeling process of this invention. It is a figure which showed the air volume of the wind which changes gently in the peeling process of this invention. It is a figure which showed the wind speed of the wind which changes gently in the peeling process of this invention.

Hereinafter, examples of embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall configuration diagram of the washer / dryer, and FIG. 2 is a schematic diagram showing the overall configuration diagram of the washer / dryer and the state of the attached clothes 56a after the final dehydration.

The washing / drying machine can perform washing, rinsing, dehydration, and drying, and includes a housing 1, an outer tub 10 that is vibration-proof supported inside the housing 1 and stores washing water inside, and an outer tub. A washing / dehydrating tub 9 having an opening in the upper part and accommodating laundry such as clothes 56 rotatably supported around a vertical axis, and a fluid balancer 9b arranged above the washing / dehydrating tub 9. A stirring blade 11 provided with a speed reduction mechanism 63 and rotatably arranged at the bottom of the washing / dehydrating tank 9, a driving device 13 which is a driving unit for rotating the washing / dehydrating tank 9 and the stirring blade 11, and an outer tank. A water supply device 4 for pouring water into the outer tank 10 from above, a drainage device 17 arranged at the lower part of the outer tank 10 for discharging water from the outer tank 10, and a drainage device 17 arranged at the lower part of the outer tank 10 and connected to the outer tank 10 A drain hose 18 for draining water from the outer tub 10, a drying mechanism 19 which is a drying part which is arranged above the outer tub 10 and blows wind 51 into the washing / dehydrating tub 9, and a water level signal according to the water level in the outer tub 10. The generated water level sensor 21 and the outlet 54 which is arranged above the washing / dehydrating tub 9 and blows the air 51 from the drying mechanism 19 which is a blower from above to the bottom of the washing / dehydrating tub 9 into the washing / dehydrating tub 9. A water passage hole 9a through which water and wind 51 pass from inside the washing / dehydrating tub 9, a drying duct 10a connecting the outer tub 10 and a blower fan 19a, and a dehumidifying mechanism (not shown) inside the drying duct 10a. A temperature sensor 26 provided on the upstream side of the drying duct 10a, and a control device 8 for controlling the driving device 13 and the drying mechanism 19 and controlling each process of washing, rinsing, dehydration, and drying. ing.

Since the washer / dryer dries, the drying mechanism 19 sucks air into the drying mechanism 19 to generate an air 51, a blower fan 19a, a heater 19b that generates heat when energized, an outlet 54, and a blower fan. It is composed of a bellows tube 19c connecting 19a.

FIG. 3 is an external perspective view showing the configuration of the stirring blade 11. The rotary wing 11 is provided with a gently sloping surface 11c and a raised portion 11a that repeatedly apply an upward component force to the clothing 56 thrown onto the rotary wing 11 by rotating, and water flows through the sloping surface 11c. And a number of small water holes 11b for ventilation are arranged.

FIG. 4 is a cross-sectional view of the drive device 13 in the washer / dryer. The drive device 13 includes a reduction mechanism 63, a switching clutch mechanism 62, a clutch operating electric motor 62a, and a motor 61. The speed reduction mechanism 63 is composed of a planetary gear mechanism 63a, decelerates the rotation of the motor 61, and rotates the stirring blade 11 via the washing shaft 64 to perform washing and rinsing. Further, the rotation of the motor 61 is directly rotated via the dehydration shaft 65 to integrally rotate the washing / dehydrating tank 9 and the stirring blade 11 to perform dehydration. The switching mechanism 62 switches the shaft that transmits the rotation of the motor.

Here, the operation of the washing course for washing, rinsing, and dehydrating the washer / dryer will be described with reference to the configurations of FIGS. 1 and 2.

When the start switch is pressed, if automatic washing is set, the stirring blade 11 is rotationally driven to detect the amount of clothes 56 loaded in the washing / dehydrating tub 9 (detergent amount sensing) and wash. (Washing and rinsing) Set the amount of water, and set and display the amount of detergent according to this set amount of water.

Next, water is supplied from the upper part of the outer tub 10 by the water supply device 4 while the washing / dehydrating tub 9 or the stirring blade 11 is rotationally driven, and water is poured onto the clothes 56 to moisten them to reduce the bulk of the clothes 56.

In this water supply process, the stirring blade 11 is rotationally driven to detect the amount of clothing 56 (cloth quantity sensing and cloth quality sensing), and the quantity and quality of clothing 56 are estimated based on the detection results. The amount of washing water set according to the estimated amount and quality of clothes is corrected, the on-off time of reversing drive is set, and the washing time is set.

When the water supply to the set amount of water is completed, the stirring blade 11 is reversely driven to perform washing and stirring control for applying mechanical force to the clothes 56. This is performed according to the on-off time and washing time of the reversing drive set according to the quantity and quality of the clothes 56.

Here, the reverse drive is an operation of repeating the forward rotation drive → pause → reverse rotation drive → pause → forward rotation drive of the stirring blade 11. The on time period is the time for rotationally driving in the forward or reverse direction (power supply time to the drive device 13), and the off time period is the pause time.

When the washing is completed, the washing water is drained from the drain device 17 via the drain hose 18, and the stirring blade 11 and the washing / dehydrating tank 9 are driven to rotate at high speed in one direction to wash the clothes contained in the clothes 56. Centrifugal dehydration of water.

Next, water is supplied to the set amount of rinse water, and rinse stirring control is performed to reduce the detergent component from the clothes 56. The reversing drive for rinsing agitation is performed according to the on-off time and rinsing time of the reversing drive set according to the quantity and quality of the clothes 56 as in the case of washing.

When the rinsing is completed, the rinsing water is drained from the drain device 17 via the drain hose 18, and the stirring blade 11 and the washing / dehydrating tub 9 are driven to rotate at high speed in one direction, thereby rinsing the clothes 56. Centrifugal dehydration of water.

This rinsing, drainage and dehydration is repeated multiple times as needed. The final dehydration (final dehydration) is carried out until the dehydration rate (= weight of dry cloth / weight of compress x 100) becomes 55% or more.

As shown in FIG. 2, the clothes 56 after the final dehydration are in a state of being attached to the tub wall 9c in the washing / dehydrating tub 9. In order to make it easier to take out the stuck clothes 56a, the washing / dehydrating tub 9 is rotationally driven in a single direction, the wind 51 is blown into the washing / dehydrating tub 9 from the outlet 54, and the clothes 56a with the wind 51 stuck are blown into the washing / dehydrating tub 9. The clothes 56 are moved by applying a downward force to the clothes 56, and a peeling step of peeling from the tank wall 9c in the washing / dehydrating tank 9 is performed. That is, after the dehydration step, the control device 8 which is a control unit rotates and drives the washing / dehydrating tub 9 in a single direction, and blows out the wind 51 from the outlet 54 to the tank wall 9c side in the washing / dehydrating tub 9. Perform the process.

Then, by blowing the wind 51 toward the tank wall 9c in the washing / dehydrating tank 9, more wind 51 hits the clothes 56a attached to the tank wall 9c in the washing / dehydrating tank 9, so that the effect of peeling off is more effective. growing. That is, when the blown wind 51 hits the laundry such as clothes stuck to the tank wall 9c or the like, the stirring blade 11 is prevented from idling without contacting the laundry, whereby the final dehydration is completed. It is possible to prevent wrinkles and pain from occurring in the laundry while suppressing the entanglement of the laundry afterwards.

Therefore, in order to check the degree of peeling of the clothes 56a attached to the tank wall 9c in the washing / dehydrating tub 9 due to the wind 51 blown into the washing / dehydrating tub 9, a blowout arranged at the upper part of the washing / dehydrating tub 9 after dehydration. An experiment was conducted in which the wind 51 was blown from the mouth 54 into the washing / dehydrating tub 9 and the air volume and speed of the wind 51 were changed to remove the clothes 56a attached to the tub wall 9c in the washing / dehydrating tub 9. Here, the air volume and the wind speed are numerical values at the outlet 54.

In the experiment, the distance between the outlet 54 and the attached clothing 56a (H in FIG. 2) was 0 mm (in contact), 300 mm, and 450 mm, and the weight of the clothing 56 was 1.0 kg in the dry cloth state. It was carried out at 1.5 kg, 2.0 kg and 6.0 kg.

From the experimental results, when the distance between the outlet 54 and the attached clothes 56a (H in FIG. 2) becomes short, the wind 51 required to remove the attached clothes 56a from the tank wall 9c in the washing / dehydrating tank 9 It was found that the force became smaller and the air volume and speed of the wind 51 required for peeling from the tank wall 9c in the washing / dehydrating tank 9 became smaller. Then, it was found that the influence of the weight of the clothes 56 was extremely small as compared with the influence of the distance between the outlet 54 and the clothes 56a stuck to the outlet 54.

Further, the distance between the outlet 54 under the condition that the air volume or the wind speed is the smallest and the clothes 56a attached to the clothes 56a (H in FIG. 2) is the shortest, 0 mm (in contact), and the tub wall in the washing / dehydrating tub 9 The wind 51 required to remove from 9c was a wind volume of 0.8 cubic meters per minute or a wind speed of 21 meters per second. Therefore, considering the case where the distance between the outlet 54 and the attached clothing 56a (H in FIG. 2) is long, the wind 51 for peeling off the attached clothing 56a has an air volume of 0.8 cubic meters or more per minute or A wind speed of 21 meters or more per second is required.

However, if the strong wind 51 is continuously applied for a long time, the clothes 56 are twisted, which causes wrinkles during drying. Here, the strong wind 51 is a wind 51 having an air volume of 0.8 cubic meters or more per minute or a wind speed of 21 meters or more per second. The cause of the twisting of the clothes 56 is that, depending on the type, material, fiber state and arrangement of the clothes 56, a plurality of clothes 56 are solidified into one in the washing / dehydrating tub 9 due to the centrifugal force of dehydration in the washing / dehydrating tub 9. There are some parts that are hard to peel off from the tank wall 9c and some parts that are easy to peel off without solidifying, and the parts that are hard to peel off remain solidified. This is because it is twisted by the movement.

Therefore, when the clothes start to peel off from the tub wall 9c in the washing / dehydrating tub 9, the air volume or the wind speed of the wind 51 that hits the clothes is lowered with the passage of time, and the movement of the clothes 56 is suppressed to suppress the twist of the clothes 56. be able to.

Here, the air volume and the wind speed of the wind 51 may be gradually decreased as shown in FIGS. 5 and 6. In this embodiment, it is reduced in three stages, but the stage may be one stage or the number of other stages.

Further, the air volume and the wind speed of the wind 51 may gradually decrease as shown in FIGS. 7 and 8. The method of gently lowering may be a fixed amount or a different amount instead of a fixed amount.

Then, after the peeling step is completed, the stirring blade 11 is rotationally driven by the drive device 13 to stir the clothes 56 peeled from the washing / dehydrating tank 9, so that the clothes 56 are agitated while being stuck in the washing / dehydrating tank 9. The applied mechanical force is reduced, the clothes 56 can be loosened without being damaged, and the clothes 56 can be easily taken out after the final dehydration.

In addition to the washing course, the washer / dryer has a washing / drying course that continues from washing to drying. For drying, the air blower 19a is operated while the stirring blade 11 or the washing / dehydrating tank 9 is rotationally driven by the driving device 13, and the heated air passes through the bellows tube 19c and is sent from the outlet 54 by energizing the heater 19b. A warm air 51 is blown into the washing / dehydrating tub 9. The wind 51, which warms the clothes 56 and evaporates the water to become hot and humid, goes out to the outer tank 10 through the water passage hole 9a, is sucked into the drying duct 10a, and is cooled and dehumidified by the cooling water flowing down in the dehumidifying mechanism. It becomes dry and cold air. The low-temperature air is sucked into the drying mechanism by the blower fan 19a, reheated by the heater 19b, and circulated so as to be blown into the washing / dehydrating tub 9.

However, even in the dehydration before drying, the clothes 56 are centrifugally dehydrated by the centrifugal force by rotating the washing and dehydrating tub 9 in the same manner as the dehydration of the washing course. Therefore, the clothes 56 are washed and dehydrated by the centrifugal force. It is attached to the tank wall 9c in 9. At the start of drying, the stirring blade 11 is rotationally driven while being stuck in the washing / dehydrating tub 9, so that mechanical force is applied to the stuck clothes 56a to peel them off from the tub wall 9c in the washing / dehydrating tub 9. The clothes 56 are entangled, and the clothes 56 are wrinkled or damaged.

Therefore, in order to suppress the entanglement of the clothes 56, the washing / dehydrating tub 9 is rotationally driven in a single direction, the wind 51 is blown into the washing / dehydrating tub 9 from the outlet 54, and the clothes 56a to which the wind 51 is attached. The clothes 56 are moved by applying a downward force to the clothes 56, and a peeling step of peeling from the tank wall 9c in the washing / dehydrating tank 9 is performed. That is, before the drying step, the washing / dehydrating tub 9 is rotationally driven in a single direction, and a peeling step is performed in which the wind 51 is blown from the outlet 54 to the tub wall 9c side in the washing / dehydrating tub 9. As a result, as in the washing course, the blown wind 51 hits the laundry such as clothes stuck to the tub wall 9c and the like, thereby suppressing the stirring blade 11 from idling without contacting the laundry. As a result, it is possible to prevent the laundry from being wrinkled or painful while suppressing the entanglement of the laundry after the final dehydration is completed.

Here, the wind 51 that blows the wind 51 into the washing / dehydrating tub 9 requires an air volume of 0.8 cubic meters or more per minute or a wind speed of 21 meters or more per second, as in the washing course.

However, if the strong wind 51 is continuously applied for a long time, the clothes 56 are twisted, which causes wrinkles during drying. Here, the strong wind 51 is a wind 51 having an air volume of 0.8 cubic meters or more per minute or a wind speed of 21 meters or more per second. The cause of the twisting of the clothes 56 is that, depending on the type, material, fiber state and arrangement of the clothes 56, a plurality of clothes 56 are solidified into one in the washing / dehydrating tub 9 due to the centrifugal force of dehydration in the washing / dehydrating tub 9. There are some parts that are hard to peel off from the tank wall 9c and some parts that are easy to peel off without solidifying, and the parts that are hard to peel off remain solidified. This is because it is twisted by the movement.

Therefore, when the clothes start to peel off from the tub wall 9c in the washing / dehydrating tub 9 as in the washing course, the twist of the clothes 56 is suppressed by reducing the air volume or the wind speed of the wind 51 and suppressing the movement of the clothes 56. Can be done.

Here, the air volume and the wind speed of the wind 51 may be gradually decreased as shown in FIGS. 5 and 6. The stage may be one stage or the number of other stages.

Further, the air volume and the wind speed of the wind 51 may gradually decrease as shown in FIGS. 7 and 8. The method of gently lowering may be a fixed amount or a different amount instead of a fixed amount.

By performing such a peeling step, the clothes 56 are in a loosened state without being twisted at the start of drying. Therefore, the entanglement of the clothes 56 caused by rotationally driving the stirring blade 11 at the time of drying is suppressed, and the clothes 56 Wrinkles and tears can be suppressed.

1 Housing 4 Water supply device 8 Control device 9 Washing and dehydration tank 9c Tank wall 10 Outer tank 11 Stirring blade 13 Drive device 17 Drainage device 18 Drainage hose 19 Drying mechanism 51 Wind 54 Outlet 56 Clothing

Claims (5)

With the housing
An outer tub that is vibration-proof supported inside the housing and stores washing water inside,
A washing and dehydrating tub that is rotatably supported in the outer tub and accommodates laundry,
A drive unit that rotationally drives the washing and dehydration tub,
A blower that blows air into the washing and dehydrating tub,
An outlet that blows air from the blower from above to below the washing / dehydrating tub,
It has a control unit that controls the drive unit and the blower unit, and controls each process of the washing process, the rinsing process, and the dehydration process.
The washing machine is characterized in that, after the dehydration step, the control unit rotationally drives the washing / dehydrating tub in a single direction and blows the wind into the washing / dehydrating tub from the outlet. The washing machine according to claim 1.
The control unit controls the drying process and
The washing machine is characterized in that the control unit rotationally drives the washing / dehydrating tub in a single direction before the drying step, and performs a peeling step of blowing the wind into the washing / dehydrating tub from the outlet. .. The washing machine according to claim 1 or 2.
The peeling step is a washing machine characterized in that the air from the outlet is blown to the tub wall side in the washing / dehydrating tub. The washing machine according to any one of claims 1 to 3.
A washing machine characterized in that the air volume or the wind speed of the wind blown out from the outlet in the peeling step decreases with the passage of time. The washing machine according to any one of claims 1 to 3.
A washing machine characterized in that the air volume or the wind speed of the wind blown out from the outlet in the peeling step is gradually or gently decreased with the passage of time.

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