JP6268365B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a drum-type washing machine that performs hot water washing of clothes and the like.

  Conventionally, a washing machine provided with a function of heating washing water can obtain an effective detergency by maximizing the effectiveness of the enzyme contained in the detergent by heating the washing water to a desired temperature. It is very useful because it can remove hard-to-drop dirt that has adhered to objects. On the other hand, in order to avoid the occurrence of problems in each part of the equipment due to the steam generated by the heating of the washing water, various anti-condensation measures are provided separately, such as a special sealing material ( For example, see Patent Document 1).

JP 2007-68801 A

  However, in the conventional configuration, a configuration for preventing dew condensation is additionally required in addition to the original function for washing, and unnecessary parts / costs are added to the user. Moreover, about the part which cannot be sealed by connecting with a water tank, the subject that a sealing material cannot be comprised and generation | occurrence | production of condensation cannot be avoided occurred.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a drum type washing machine that can avoid the occurrence of malfunctions of equipment due to the occurrence of condensation without separately providing a special configuration.

In order to solve the above-described conventional problems, a drum-type washing machine according to the present invention includes a water tank for storing washing water, a rotary tank that is rotatably disposed in the water tank and has an opening on the front side, A motor for driving the rotating tub; a protrusion provided inside the rotating tub; a drain opening provided at a lower portion of the water tub; a heater for heating washing water provided at a lower portion of the water tub; A drying means for drying the product, a drying fan forming one of the drying means, and a control means for controlling a washing and drying operation in a series of steps of washing, rinsing, dehydrating, and drying. The air flow from the upper part of the rear surface of the water tank to the front or from the upper part of the peripheral edge of the opening to the rear is performed by the control means in the washing step and / or the rinsing step. When washing water is heated by a heater , Along with rotating the rotary tub at a rotational speed that does not lifted up above the half of the rotating tub laundry by the protrusion after the dehydration step, it is obtained so as to drive at least the drying fan.

  With such a configuration, it is possible to avoid the occurrence of a malfunction of the device due to the occurrence of condensation without providing a special configuration separately.

  The drum type washing machine of the present invention can avoid the occurrence of malfunctions of equipment due to the occurrence of condensation without separately providing a special configuration.

Sectional drawing which shows schematic structure of the drum type washing machine in Embodiment 1 of this invention Time chart showing operation of the drum type washing machine in Embodiment 1 of the present invention Time chart showing operation of washing machine of comparative example The schematic diagram showing the state of the laundry of the drum type washing machine in Embodiment 1 of this invention The schematic diagram showing the state of the laundry of the drum type washing machine of a comparative example The schematic diagram showing the state of the laundry of the drum type washing machine in Embodiment 2 of this invention

A first aspect of the present invention is a water tank for storing washing water, a rotary tank that is rotatably disposed in the water tank and has an opening on the front side, a motor that drives the rotary tank, and an inner side of the rotary tank A protrusion provided in the water tank, a drain port provided in the lower part of the water tank, a heater for heating the washing water provided in the lower part of the water tank, a drying means for drying the laundry, and the drying means And a control means for controlling a washing and drying operation in a series of steps of washing, rinsing, dewatering and drying, and air blown from the drying means into the rotating tub is supplied to the water tank. When the washing water is heated by the heater in the washing process and / or the rinsing process, the control means is performed after the dehydration process. the laundry by the protrusion With rotating the rotary tub than at a rotation speed not lifted up above half of the rolling chamber, in which a drum type washing machine, characterized in that for driving at least the drying fan.

  With such a configuration, it is possible to avoid the occurrence of a malfunction of the device due to the occurrence of condensation without providing a special configuration separately.

A second invention includes a water tank for storing washing water, a rotary tank that is rotatably disposed in the water tank and has an opening on the front surface side, a motor that drives the rotary tank, and an inner side of the rotary tank A protrusion provided in the water tank, a drain port provided in the lower part of the water tank, a heater for heating the washing water provided in the lower part of the water tank, a drying means for drying the laundry, and the drying means And a control means for controlling a washing and drying operation in a series of steps of washing, rinsing, dewatering and drying, and air blown from the drying means into the rotating tub is supplied to the water tank. When the washing water is heated by the heater in the washing process and / or the rinsing process, the control means is performed after the dehydration process. the laundry by the protrusion With rotating the rotary tub at a rotation time is not lifted than half of the rolling chamber to above, in which the drum washing machine, characterized in that for driving at least the drying fan.

  With such a configuration, it is possible to avoid the occurrence of a malfunction of the device due to the occurrence of condensation without providing a special configuration separately.

According to a third aspect of the present invention, there is provided a water tank for storing washing water, a rotary tank rotatably disposed in the water tank and provided with an opening on the front side, a motor for driving the rotary tank, and an inner side of the rotary tank. and projections provided, a water discharge port provided at the bottom of the tub, a heater for washing water heating provided in the lower part of the tub, a drying means for drying the laundry, the drying means A drying fan that forms one unit, and a control unit that controls a washing and drying operation in a series of steps of washing, rinsing, dehydrating, and drying, and air blown from the drying unit into the rotating tub is performed on a rear surface of the water tub. The control means heats the washing water by the heater in the washing step and / or the rinsing step, either forward from any one of the upper halves or backward from any one of the upper halves of the opening. If the laundry is before the dehydration process With rotating the rotary tub at a rotational speed sticking to the rotating tub, in which a drum type washing machine, characterized in that for driving at least the drying fan.

  With such a configuration, it is possible to avoid the occurrence of a malfunction of the device due to the occurrence of condensation without providing a special configuration separately.

Hereinafter, a washing machine according to an embodiment of the present invention will be described with reference to the drawings. The following embodiments are examples embodying the present invention, and do not limit the technical scope of the present invention.

(Embodiment 1)
Embodiment 1 of the present invention will be described below with reference to the drawings. 1 is a cross-sectional view showing a schematic structure of a drum-type washing machine according to Embodiment 1 of the present invention. FIG. 2 is a time chart showing the operation of the drum type washing machine in the first embodiment of the present invention. FIG. 3 is a time chart showing the operation of the conventional drum type washing machine. FIG. 4 is a schematic diagram showing the state of the laundry of the drum type washing machine in the first embodiment of the present invention. FIG. 5 is a schematic diagram showing the state of the laundry of the drum type washing machine of the comparative example.

  1 to 5, a water tank 2 formed in a bottomed cylindrical shape is elastically supported in a housing 1. A rotating tank 4 formed in a bottomed cylindrical shape is disposed in the water tank 2 so as to be rotatable. The rotation axis 10 of the rotating tub 4 substantially coincides with the cylindrical center line of the rotating tub 4, and this substantially coincides with the cylindrical center line of the water tub 2.

  The water tank 2 and the rotating tank 4 are each provided with openings 5 and 6 on the front side. With the opening 5 side of the water tank 2 being the front side of the housing 1, the rotation axis 10 of the rotating tank 4 is supported by being inclined upward (for example, 10 to 20 degrees) from the horizontal direction. Since the rotation axis 10 is inclined forwardly, a deep water storage state is obtained on the bottom 11 side of the rotary tank 4 with a small amount of water, and water saving can be improved. However, the rotation axis 10 may be horizontal if water saving is not taken into consideration.

  Opposite to the opening 5 of the water tank 2 and the opening 6 of the rotating tank 4, a door body 7 that can be opened and closed is provided on the front surface of the housing 1. The user can put the laundry in and out of the rotating tub 4 by opening the door body 7. A flexible bellows 8 formed of an elastic body such as rubber is disposed around the opening 5 of the water tank 2. When the door body 7 is closed, one end of the bellows 8 is in pressure contact with the inner surface thereof, and the opening 5 and the door body 7 are sealed.

  A motor 9 that rotationally drives the rotating tub 4 is attached to the end surface of the water tub 2 opposite to the opening 5. The rotor of the motor 9 is connected to the rotating tub 4 by the rotating shaft center 10 of the rotating tub 4, and the rotation of the motor 9 is transmitted to the rotating tub 4 by the rotating shaft 10. A plurality of protrusions 12 are provided on the peripheral wall of the rotating tub 4 so as to protrude toward the rotation axis 10. As the rotating tub 4 rotates, the laundry is hooked by the protrusion 12 and lifted upward, and a stirring operation is performed in which the laundry is dropped from a certain height.

  A plurality of small holes 13 are provided in the peripheral wall of the rotating tub 4 over the entire circumference. When the washing water in the water tub 2 accumulates at a predetermined water level, the washing water enters the rotating tub 4 from the small holes 13. It is configured as follows.

  Above the water tank 2, a detergent container 14 for storing detergent is provided. The detergent container 14 is connected to a water supply valve 15 connected to a water tap, and the supply and stop of tap water to the detergent container 14 is performed by opening and closing the water supply valve 15.

  A concave drainage groove 3 is provided at the bottom of the inner bottom of the water tank 2. A drain port 17 for discharging the washing water in the water tank 2 is provided at the bottom of the drain groove 3 and in the vicinity of the lowest point of the water tank 2, and the washing water discharged from the drain port 17 is discharged to the outside of the housing 1. A leading drainage path 18 is provided. A drain valve 19 that opens and closes the drain path 18 is provided in the middle of the drain path 18.

  The drain groove 3 is provided with a heater 3a for heating the washing water, and can heat the washing water to a desired temperature.

  The water tank 2 communicates with a drying means for drying laundry, and the drying means includes a drying fan 20, a dehumidifying means 21a, and a heating means 21b. In the drying process, warm air that has been dehumidified by the dehumidifying means 21 a and heated by the heating means 21 b by the action of the drying fan 20 is dried from the air outlet 23 provided at the upper position on the back of the water tank 2. And it spouts toward the inner side of the rotating tub 4 as shown by an arrow a in FIG. Thereafter, the dried warm air exchanges heat with the laundry in the rotating tub 4 to dry the laundry, and then becomes a moist and low-temperature state. As shown by the arrow b, the dehumidifying means 21a returns to the heating means 21b, dehumidified, and then heated again. Repeat this cycle. In addition, the lint generated from the laundry in the drying process is collected by the removable drying filter 22 and discarded by the user.

  In addition, although the ventilation port 23 is formed in the upper part of the back surface of the water tank 2, it should just be formed in the position of the upper half of the back surface of the water tank 2. Further, the air blowing port 23 may be formed at the upper part of the peripheral edge of the opening 6 of the rotating tub 4 or may be formed at any position on the upper half of the peripheral edge of the opening 6.

  In the housing 1, the heater 3a, the motor 9, the water supply valve 15, the drain valve 19, the drying fan 20, and the like are controlled, and the operations of each process of washing, rinsing, dehydration, and drying are controlled based on a set program. Control means 25 is provided.

  Hereinafter, the operation and action of the drum type washing machine configured as described above will be described. FIG. 2 is a time chart showing the operation of the drum type washing machine in the first embodiment of the present invention.

  When the user opens the door body 7 and puts the laundry into the rotary tub 4 and starts operation, the control means 25 starts the washing process and detects the amount of the loaded laundry. Thereafter, the water supply valve 15 is opened, the washing water dissolves the laundry detergent stored in the detergent container 14, and the washing water is supplied into the water tank 2.

  Washing water stored in the water tank 2 is detected by a water level detection means 16 communicating with the lower part of the water tank 2. When the amount of water set according to the amount of laundry is stored, the control means 25 stops water supply. The rotating tub 4 is driven to rotate in the forward and reverse directions by the motor 9, and the laundry stored in the rotating tub 4 is lifted by the protrusion 12 in the rotational direction and then dropped. Washed.

  When a predetermined washing time has elapsed, the drain valve 19 is opened, and the washing water in the water tank 2 is drained through the drain path 18. After draining is completed, the washing water for rinsing is newly supplied and the rinsing process is started. The operation of the rotating tank 4 in the rinsing process is the same as that in the washing process.

  When the predetermined number of rinsing steps are completed, the dehydrating step is started, the drain valve 19 is opened, and the rinsing water in the water tank 2 is drained. The rotating tub 4 rotates at a high speed, and the washing water for rinsing contained in the laundry is dehydrated. The dehydration step is executed for a predetermined time and the operation is terminated. In addition, when the “washing to drying” operation is selected, the drying process is executed following the dehydration process.

  In addition, when a course for washing with warm water is selected by the user, the washing water is heated to a predetermined temperature by the heater 3a, and the washing process is performed. When the washing water is heated by the heater 3a, steam is generated in the water tank 2 and the rotating tank 4, and the steam rises from the upper part of the water tank 2 and the rotating tank 4 as shown by the arrow b, and is removable. Condensation occurs around the filter 22.

This will be described in detail. FIG. 3 is a time chart showing an operation at the time of washing of the drum type washing machine of the comparative example, which was tested in the process leading to the present invention. As shown in FIG. 3A, when the “washing to drying” operation is selected, even if condensation occurs on the drying filter 22 in the washing process, it does not cause a problem because it is dried during the subsequent drying process.

  However, as shown in FIG. 3B, when the “washing only” operation is selected, the condensation that has occurred during the washing process ends while remaining attached to the drying filter 22, so the user removes the drying filter. When it is removed, the attached dew drops on the floor surface outside the washing machine, and the floor surface is soiled. If the floor surface is made of wood, the floor surface may be spoiled.

  In general, when the drying filter 22 is condensed, this problem is dealt with by the user separately performing the “drying only” operation.

  However, this correspondence is not only troublesome for the user but also very inefficient content. FIG. 5 is a schematic diagram illustrating a state of the laundry of the washing machine of the comparative example. In the drying operation of the comparative example, the laundry is lifted by the protrusions 12 so that the warm air that is dehumidified and heated by the dehumidifying means 21a and the heating means 21b efficiently exchanges heat with the laundry in the rotating tub 4. The rotating tub 4 is driven so as to move all over the rotating tub 4. As a result, after the laundry is dried, the warm air returns to the dehumidifying means 21a and the heating means 21b and circulates in a moist and low temperature state as indicated by an arrow b in FIG. Therefore, the wind passing through the drying filter 22 is in a moist and low temperature state, and is not suitable for drying the attached condensation, and it takes a very long time to remove the condensation. As a result, there is a problem that a great deal of wasted energy is wasted.

  Therefore, in the present invention, as shown in FIG. 2 (b), when the "washing only" operation is selected, the rotating tub 4 is rotated at a rotation speed or rotation time at which the laundry is not lifted by the protrusions 12 after final dehydration. And a finishing step for driving the drying means.

  That is, as shown in FIG. 4, when the rotating tub 4 is rotated at a low speed (for example, about 15 r / min), the laundry is not lifted up by the protrusions 12 and is gathered in the lower portion of the rotating tub 4. Therefore, heat exchange does not occur in contact with the dry warm air indicated by the arrow a in FIG. 4 coming out of the air outlet 23, and as a result, the dry warm air remains in the dry warm air state in FIG. Flowing as shown by the arrow b, the effect of removing the condensation around the drying filter 22 is obtained.

  In the state where the rotating tub 4 is rotated at a low speed, the laundry is not lifted up by the protrusion 12, but is caught by the protrusion 12 and rolls in the rotating tub 4 as the rotating tub 4 rotates. It is in a state.

  When the drying means is driven without rotating the rotating tub 4, only the upper surface of the laundry gathered at the lower part of the rotating tub 4 is dried and left in the state after the final dehydration, so-called dewatering wrinkles There is a problem attached.

  According to the present invention, by rotating the rotating tub 4 at a low speed, the laundry is hooked on the protrusion 12 and rolls in the rotating tub 4 as the rotating tub 4 rotates. The problem can be solved.

  The rotating tub 4 does not need to be rotated at all times, and may be rotated intermittently so that the laundry can be rotated to such an extent that dewatering wrinkles do not occur.

In the present embodiment, the rotational speed of the rotating tub 4 depends on the amount of laundry, but the rotational speed is less than the rotational speed at which the laundry is lifted to a position slightly above the half of the rotating tub 4 on the rotating direction side of the rotating tub 4. Is set. The rotation speed of the rotating tub 4 is preferably a rotation speed at which the laundry lifted with the rotation of the rotating tub 4 falls from above and does not greatly block the flow of dry warm air.

  Moreover, you may rotate the rotation tank 4 for a short time (for example, about 2 second in this Embodiment). In the rotation of the rotating tub 4 for a short time, the laundry is not lifted up by the protrusions 12, so that the effect of removing condensation around the drying filter 22 can be obtained. The time for rotating the rotating tub 4 is a time for which the laundry is not lifted by the protrusions 12 even when the rotating tub 4 is rotated, and is not limited to about 2 seconds in the present embodiment.

  In a state where the rotating tub 4 is rotated for a short time, the laundry is not lifted upward by the protrusion 12, but is caught by the protrusion 12 and rolls in the rotating tub 4 as the rotating tub 4 rotates. It is in a state. Since the laundry rolls in the rotating tub 4 as the rotating tub 4 rotates, the problem of dewatering wrinkles can be solved.

  In addition, you may rotate the rotation tank 4 intermittently at the time interval which can rotate the laundry to such an extent that a dehydration wrinkle does not arise.

  Although the rotation time of the rotating tub 4 depends on the amount of laundry, it is set to be equal to or less than the rotating time that the laundry is lifted to a position slightly above the half of the rotating tub 4 on the rotation direction side of the rotating tub 4. The rotation time of the rotating tub 4 is preferably a rotation time in which the laundry lifted with the rotation of the rotating tub 4 falls from above and does not greatly block the flow of dry warm air.

  As described above, the drum-type washing machine of the present invention can avoid the occurrence of malfunctions of equipment due to the occurrence of condensation and the occurrence of malfunctions due to dripping of condensed water outside the washing machine without providing a special configuration separately. .

(Embodiment 2)
FIG. 6 is a schematic diagram showing the state of the laundry of the drum type washing machine in the second embodiment of the present invention. Only differences from the first embodiment will be described below.

  In the second embodiment of the present invention, the rotating tub 4 is rotated at a higher speed (for example, about 80 r / min) than normal drying. When the rotating tub 4 is rotated at a high speed, the laundry does not stick to the inside of the rotating tub 4 and fall as shown in FIG. Therefore, as shown by the arrow a in FIG. 6, the dry warm air coming out of the air outlet 23 does not exchange heat with the dry warm air. As a result, the dry warm air is not In the state of dry warm air, it flows as indicated by the arrow b shown in FIG. 6, and the effect of removing condensation around the dry filter 22 is obtained.

  In addition, the high speed rotation of the rotary tank 4 is performed intermittently. When the rotation of the rotating tub 4 is stopped, the laundry falls to the lower portion of the rotating tub 4, and the portion that is not in contact with the warm air when the rotating tub 4 rotates becomes the surface. When the rotation of the rotating tank 4 starts again, the rotating tank 4 sticks to the inside of the rotating tank 4 and a new part comes into contact with the warm air. Thereby, the dehydration wrinkle by which only a part of laundry is dried can be suppressed.

  As described above, the drum-type washing machine of the present invention can avoid the occurrence of malfunctions of equipment due to the occurrence of condensation and the occurrence of malfunctions due to dripping of condensed water outside the washing machine without providing a special configuration separately. .

  In each embodiment of the present invention, the drying fan 20 and both the dehumidifying means 21a and the heating means 21b are driven as the drying means, but only the drying fan 20 may be driven.

  In addition, each embodiment of the present invention can be implemented in combination with other embodiments. Therefore, the combination of another embodiment or a part of another embodiment is also disclosed.

  As described above, the drum-type washing machine according to the present invention can avoid the occurrence of malfunction of equipment due to the occurrence of condensation and the occurrence of malfunction due to dripping of condensed water outside the washing machine without providing a special configuration separately. It is very useful.

DESCRIPTION OF SYMBOLS 1 Case 2 Water tank 3 Drainage groove 3a Heater 4 Rotating tank 5, 6 Opening part 7 Door body 8 Bellows 9 Motor 10 Rotation center 11 Bottom part 12 Projection body 13 Small hole 14 Detergent container 15 Water supply valve 16 Water level detection means 17 Drainage port DESCRIPTION OF SYMBOLS 18 Drain path 19 Drain valve 20 Drying fan 21a Dehumidifying means 21b Heating means 22 Drying filter 23 Blower outlet 24 Exhaust outlet 25 Control means

Claims (3)

A water tank for storing washing water, a rotary tank that is rotatably disposed in the water tank and has an opening on the front surface side, a motor that drives the rotary tank, and a protrusion provided inside the rotary tank A drain outlet provided in the lower part of the water tank, a heater for heating the washing water provided in the lower part of the water tank, a drying means for drying the laundry, and drying that forms one of the drying means A fan and control means for controlling the washing and drying operation of a series of steps of washing, rinsing, dewatering and drying,
The air blowing from the drying means into the rotating tub is performed from the upper part of the rear surface of the water tank to the front or from the upper part of the peripheral edge of the opening to the rear,
When the washing water is heated by the heater in the washing step and / or the rinsing step, the control means is configured so that the laundry does not lift up above half of the rotation vessel by the protrusion after the dehydration step. And a drum-type washing machine that drives at least the drying fan . A water tank for storing washing water, a rotary tank that is rotatably disposed in the water tank and has an opening on the front surface side, a motor that drives the rotary tank, and a protrusion provided inside the rotary tank A drain outlet provided in the lower part of the water tank, a heater for heating the washing water provided in the lower part of the water tank, a drying means for drying the laundry, and drying that forms one of the drying means A fan and control means for controlling the washing and drying operation of a series of steps of washing, rinsing, dewatering and drying,
The air blowing from the drying means into the rotating tub is performed from the upper part of the rear surface of the water tank to the front or from the upper part of the peripheral edge of the opening to the rear,
When the washing water is heated by the heater in the washing step and / or the rinsing step, the control means has a rotation time during which the laundry does not lift above the half of the rotation vessel by the protrusion after the dehydration step. And a drum-type washing machine that drives at least the drying fan . A water tank for storing washing water, a rotating tank that is rotatably disposed in the water tank and has an opening on the front surface side, a motor that drives the rotating tank, and a protrusion provided inside the rotating tank, A drain outlet provided in the lower part of the water tank, a heater for heating the washing water provided in the lower part of the water tank, a drying means for drying the laundry, and a drying fan constituting one of the drying means And control means for controlling the washing and drying operation in a series of steps of washing, rinsing, dehydration and drying,
The air blowing from the drying means into the rotating tub is performed forward from any one of the upper half of the rear surface of the water tub, or backward from any one of the upper half of the opening,
In the case where the washing water is heated by the heater in the washing step and / or the rinsing step, the control means rotates the rotating tub at a rotation speed at which the laundry sticks to the rotating tub after the dehydrating step, and at least the drying fan A drum-type washing machine characterized by driving the machine.

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