JP2012179270A - Drum washing/drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a washing effect by increasing a temperature of laundry with a small amount of washing water used in a washing/drying machine.SOLUTION: A drum washing/drying machine comprises: a heating means 12 for supplying warm air into a rotary drum 3 disposed inside a water tub 2; a draining means 4 for draining water out of the water tub 2; a circulation pump 23 for circulating washing water from a bottom part to an upper part of the water tub 2; and a control means 11 for performing operation control. After supplying washing water of a rating amount into the water tub 2 and executing a washing operation, the control means 11 causes the draining means 4 to drain most of the washing water off the water tub 2, and performs a washing operation in the rotary drum 3 while causing the heating means 12 to supply warm air for heating the water tub and laundry 7 placed in the rotary drum 3 with the circulation pump 23 driven for soaking the laundry 7 again with the washing water 10 collected in the bottom part of the water tub 2. Thus, the washing water 10 of a high temperature may be sufficiently supplied to the laundry 7, and since the temperature is thus increased, detergency of the washing water may be activated to be improved.

Description

  The present invention relates to a drum dryer that is capable of washing operation by rotationally driving a washing tub containing laundry.

  Conventionally, in this type of drum type washing and drying machine, in order to improve the cleaning performance, it has been common to heat washing water containing detergent with a heater for hot water and drive the rotating drum to rotate. In order to save energy in order to increase the operation time and increase the electricity bill, the majority of washing water with a large heat capacity is discharged out of the machine, and the inside of the water tank is heated by hot air heating means. It has been proposed to perform the washing operation by restarting the rotational drive of the rotary drum after the temperature of the laundry and the laundry containing the laundry rise (see, for example, Patent Document 1).

  FIG. 3 is a configuration diagram of a conventional drum-type washing / drying machine, and FIG. 4 is a flowchart showing an operation of the conventional drum-type washing / drying machine described in Patent Document 1.

  In FIG. 3, a water tub 2 containing a rotating drum 3 driven by a motor 5 is supported inside a washing machine body 1 by a vibration isolating function 6 so as to be swingable. The laundry 7 is put inside the rotating drum 3 and washing, dehydration, drying, and other operations are performed by rotation.

  The water tank 2 is supplied with washing water or the like from above through a water supply pipe 16 from a water supply function 21 that also serves as a detergent container, and constitutes a drain pipe 17a connected to the drain valve 4 at the bottom of the water tank 2.

  Further, on the outside of the rear surface of the water tank 2 (right side in FIG. 3), a heat exchange path 14 for a drying function, and on the upper side, a heater, a blower blower motor, etc. connected by the heat exchange path 14 and the circulation path 13 The heating means 12, the air duct 8, and the hot air discharge port 20 which are the hot air blowing function are provided.

  The flow of the dry circulating air is sucked from the bottom of the water tank 2 and the rotary drum 3, passes through the heat exchange path 14 and the circulation path 13, and passes through the hot air blowing function 12, the air duct 8, and the hot air discharge port 20 to the upper part of the water tank 2. To discharge.

  A warm water heater 9 and a temperature detecting means 22 for heating the wash water inside the water tank 2 are arranged at the bottom near the drain pipe 17a of the water tank 2.

  Connected to the downstream side of the drain valve 4 are a discharge hose 17c piped to a foreign matter filter 17b for removing foreign matters contained in washing water such as yarn waste, and a drain hose 17d discharged from the foreign matter filter 17b to the outside of the machine.

  An operation panel 21 and a control unit 11 are arranged on the upper front portion of the washing machine body 1 and the control unit 11 receives an input operation from the operation panel 21, and receives a motor 5, a water supply function 21, a drain valve. 4. Process control such as washing, dehydration and drying is performed by controlling the hot air blowing function 12 and the like.

  In FIG. 3, the water level of the washing water 10 at the bottom of the water tank 2 and the rotating drum 3 indicates a state in which drainage after the first washing process described below is performed.

  In the flowchart of FIG. 4, when the operation is started, the washing water is supplied according to the amount of clothes of the laundry (S1) (S2), and after the washing water temperature is detected (S3), the washing operation is executed (S4). ). This is the first washing step.

  Next, after the washing operation for a predetermined time, the washing water is drained to a predetermined water level (denoted by 10 in FIG. 3) (S5), and the stationary heating time is determined (S6) according to the water temperature detected in (S3). The heater is heated and the blower motor is driven to heat the inside of the tank with hot air blowing from the hot air discharge port 20 of FIG. 3 (S7), and after the stationary heating time determined in (S6) has elapsed (S8), The drum rotation washing operation is performed while continuing the heater heating and air blowing (S9). This is the second washing step, and the temperature of the remaining small amount of washing water is raised to activate the detergent solution.

  Thereafter, processes such as intermediate dehydration (S10), rinsing process (S11), final dehydration process (S12), and drying process (S13) are performed.

  In other words, most of the washing water is discharged out of the machine, the inside of the water tank is heated by supplying hot air using a drying function, and the temperature of the laundry containing the washing water in the rotating drum is raised to increase the washing effect. It is increasing.

JP 2006-247062 A

  However, in the conventional configuration, the hot air is supplied by the drying function to increase the temperature of the laundry and the washing water contained in the laundry. When the drum 3 is rotated in the reverse direction and mechanical force is applied to the laundry 7, the washing water contained in the laundry is detached, and there is a problem that a sufficient cleaning effect cannot be exhibited.

  On the other hand, if a large amount of washing water is set in the second washing step, the level of the washing water at the bottom of the aquarium blocks the entrance to the heat exchange path connected to the aquarium, so that the drying circulation wind cannot be blown. Occurs.

  In addition, it takes a long time because the temperature of laundry and washing water having different heat capacities cannot be increased uniformly.

  In order to shorten the drying time, when a conventional heater for hot water is used, there is a problem that a lot of electric energy is required and energy is not saved.

  In order to solve the above-described conventional problems, a drum-type washing machine according to the present invention accommodates a water tub disposed inside a washing machine body and laundry disposed rotatably within the water tub. A rotating drum, a motor for rotating the rotating drum, a heating means for heating the inside of the rotating drum, a draining means for draining water from the water tank, and a circulation pump for circulating the wash water in the water tank, A water level sensor for detecting the water level in the water tank, and control means for controlling each operation of washing, rinsing, dehydration, drying and the like by controlling the operation of the motor, heating means, drainage means, circulation pump and the like. The control means performs the washing operation in a state where the washing water is stored in the water tank, and then drains the washing water in the water tank to a predetermined water level by the draining means, and rotates the rotating drum to rotate the heating drum. hand The tub to heat the performs control that after a predetermined time or washing water to drive the circulation pump After a predetermined amount stored in the water tank by.

  As a result, the laundry is driven to rotate while sufficiently containing high-temperature washing water, so that a high detergency can be exhibited.

  Since the drum type washing / drying machine of the present invention is rotationally driven in a state of sufficiently containing high-temperature washing water, stable and high washing performance can be obtained.

The block diagram of the drum type washing-drying machine in embodiment of this invention Flow chart showing the operation of the drum type laundry drying Configuration diagram of a conventional drum-type washing and drying machine Flow chart showing the operation of a conventional drum-type washer / dryer

  A first aspect of the present invention is a water tub disposed inside a washing machine body, a rotating drum for storing laundry rotatably disposed in the water tub, and a motor for rotating the rotating drum. Heating means for heating the inside of the rotating drum, drainage means for draining water from the water tank, a circulation pump for circulating wash water in the water tank, a water level sensor for detecting the water level in the water tank, Control means for controlling the operation of the motor, heating means, drainage means, circulation pump, etc., and controlling each process such as rinsing, dehydration, and drying, and the control means supplies washing water into the water tank. After performing the washing operation in the stored state, the washing water in the water tank is drained to a predetermined water level by the draining means, and the water tank is heated by the heating means while rotating the rotating drum, and after a predetermined time has elapsed. Ma Is a laundry containing a detergent that has been supplied with sufficient washing water and has increased the temperature of the laundry by performing a control to drive the circulation pump when a predetermined amount of washing water is stored in the water tank Since the cleaning power is sufficiently exerted by the activation of water, high cleaning performance can be achieved.

  According to a second aspect of the present invention, in the first aspect of the invention, a warm air circulation path for drying the laundry is configured, and the heating means is provided in the hot air circulation path and is heated during the drying process of the laundry. By using together, it becomes unnecessary to add a new structure of the heating structure, and it is possible to implement a drum-type washing / drying machine having high cleaning power by changing and adding control specifications.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the thing of the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits detailed description. Further, the present invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a drum type washing machine according to an embodiment of the present invention, and FIG. 2 is a flowchart showing an operation of the drum type washing and drying.

  In FIG. 1, a water tank 2 is disposed inside a washing machine body 1 so as to be swingable by a vibration isolating function 6, and a rotating drum 3 is rotatably disposed in the water tank 2. Is rotationally driven by a motor 5 attached to the back of the water tank 2 from the outside, and operations such as washing, rinsing, dehydration, and drying of the laundry 7 put inside are performed.

  The water tank 2 is supplied with washing water or the like from the water supply function 21 through the water supply pipe 16 from above, and constitutes a drain pipe 17a connected to a drain valve 4 as a drain means at the bottom of the water tank 2, and the drain valve 4 On the downstream side, a discharge hose 17c piped to the foreign matter filter 17b and a drain hose 17d for discharging from the foreign matter filter 17b to the outside of the machine are connected.

  In addition, a heating means having a hot air blowing function by installing a heater, a blower motor for blowing, or the like connected to the heat exchange path 14 and the circulation path 13 on the outer side and the upper side of the rear surface (right side in FIG. 1) of the water tank 2. 12, the air duct 8, and the hot air discharge port 20 constitute a hot air circulation path and have a function of drying clothes in the laundry inside the rotary drum 3.

  A temperature detecting means 22 for the washing water 10 at the bottom of the water tank 2 and the rotating drum 3 is disposed at the bottom near the drain pipe 17a at the bottom of the water tank 2.

  In addition, a suction pipe 24 that leads from the second drain pipe 27 to the circulation pump 23 is arranged at the bottom of the water tank 2, and a discharge pipe 25 of the circulation pump 23 is piped to a discharge port 26 in front of the water tank 2 and rotated. Oriented to the inside of the drum 3.

  By the operation of the circulation pump 23, the washing water 10 accumulated in the bottom of the water tub 2 is sucked and sprinkled from the discharge port 26 toward the laundry 7 inside, and the washing water 10 dripped from the laundry 7 is returned again. A circulating water flow sucked by the circulation pump 23 is formed.

  By an input operation from the operation panel 21 on the upper front portion of the washing machine body 1, the control unit 11 includes a motor 5, a water supply function 21, a drain valve 4, a heating unit 12 including a blower fan and a heater, a circulation pump 23, and the like. A so-called drum-type washing and drying machine having functions of performing a washing process, a rinsing process, a dehydrating process, and a drying process by control is configured.

  The operation of the drum type washer / dryer according to the embodiment of the present invention will be described with reference to the flowchart of FIG.

  When the operation is started and washing water or the like is supplied from the water supply function 21 via the water supply pipe 16 (S21), the temperature detection means 22 detects the temperature of the washing water (S22) and stores it. When the water level is reached, the first washing process is performed in the washing operation (S23) by the rotation of the rotating drum 3.

  When the first washing process elapses in the washing operation for a predetermined time, the process proceeds to the second washing process. In the second washing step, the controller 11 first opens the drain valve 4 to start draining from the water tank 2 (S24). As a result, the water level of the washing water in the water tank 2 is lowered, and the control means 11 indicates that the water level in the water tank 2 has been lowered to the reset water level that is the lowest water level that can be detected by a water level sensor (not shown). If detected, it waits until a certain period of time elapses, and starts supplying hot air from the heating means 12 to the inside of the rotary drum 3 through the air duct 8 and the hot air discharge port 20 (S30). At this time, as a washing operation in the second washing step, the motor 5 is driven to rotate the rotating drum 3 at a predetermined rotation speed (S25).

  At this time, the washing water contained in the laundry 7 is detached from the laundry 7 due to the impact applied to the laundry, and is discharged into the water tank 2 and stored at the bottom. Is detected (S26). After operation for a predetermined time or when it is detected that the level of the washing water discharged into the water tank 2 has become a certain level or more, the driving of the motor 5 is stopped to stop the rotation of the rotating drum 3 (S27), and the circulation pump 23 is turned on. An intermittent operation or a continuous operation is performed for a predetermined time (S28), and a process of returning the washing water from the discharge port 26 to the internal laundry 7 is performed for a predetermined time (S29). The operation is repeated (S25 to S29), and the second washing process is completed.

  In the third washing step, the rotating drum 3 is rotated in the same manner as in the second washing step (S31), and the driving of the motor 5 is stopped when the level of the washing water discharged into the water tank 2 becomes a certain level or more. (S32) until the temperature detecting means 22 detects that the temperature of the stored water has reached the set temperature (S33) in which the circulating pump 23 is operated intermittently or continuously for a certain period of time (S33). Repeated.

  At this time, the laundry 7 is maintained at a constant temperature by being monitored by the temperature detection means 22 and controlling the heating means 12 for supplying hot air (S34).

  The end of the washing process is detected by the third washing process, the time until detection of the water temperature of the stored water and the time of the entire washing process (S35), and thereafter the normal rinsing process (S36). The operation is finished through the dehydration process (S37) and the drying process (S38).

  The operation, action, and effect of the drum type washing / drying machine configured as described above will be described below.

  With the washing water being supplied into the aquarium 2, the rotary drum 3 is driven to rotate, and the laundry contained therein is washed, for example, by washing. Thereafter, the drainage valve 4 is opened to drain the water from the water tank 2, but since the dehydration has not been performed, the laundry still contains the washing water sufficiently. After the drainage, warm air is supplied into the water tank 2 and the rotating drum 3 by the heating means 12 and heated. Moreover, the temperature of the laundry accommodated in the rotating drum 3 and the detergent liquid contained in the laundry rises during the washing operation even during heating, and the detergent is activated and the washing effect is enhanced.

  However, washing water is discharged from the laundry 7 due to the impact of rotating the rotary drum 3 and stored in the bottom of the water tub 2. After rotating the rotating drum for a certain period of time, the rotation of the rotating drum is stopped, the washing water stored in the bottom of the aquarium is pumped up by the circulation pump 23 and sprinkled on the laundry 7 again. It will be in a state that contains enough water. Since the washing operation is repeated by the rotation of the rotating drum in a state where the washing water is sufficiently contained, the washing effect is enhanced.

  At this time, since the laundry 7 is sufficiently in the state of containing high-temperature washing water, the detergent is more activated, and sebum stains that are hard to fall off when the water temperature is low rise and easily fall off. In addition, proteolytic enzymes and lipolytic enzymes in the washing water are also activated, exhibiting high detergency and removing dirt adhering to the laundry.

  In addition, when the laundry 7 is dehydrated by high-speed rotation of the rotating drum 3 in a state where the temperature is high, the dewatering performance is improved, so that the washing water is more efficiently discharged from the laundry than when dehydrated at room temperature. Therefore, the rinsing performance can be improved and the drying process time can be shortened. Alternatively, it is possible to reduce the amount of water used for rinsing.

  As described above, the washing water is pumped up by the circulation pump 23 and sprinkled on the laundry 7 again, so that the detergent liquid contained in the laundry is sufficiently replenished and the washing water cleaning power is increased by raising the temperature of the laundry. Can be fully exerted, and high cleaning performance can be achieved.

  In addition, the laundry and the washing water are heated by installing a heater, a blower blower motor, and the like connected to the heat exchange path 14 and the circulation path 13 for drying clothes on the laundry in the rotary drum 3. The heating means 12 having the blowing function, the blowing duct 8 and the hot air discharge port 20 are used, and the hot air circulation path is used. Particularly in this configuration, high-temperature heated air is applied to the laundry. Therefore, the temperature of the laundry and the detergent liquid can be increased efficiently, and the drum-type washing / drying machine can be efficiently constructed, and it is not necessary to add a new heating means.

  As described above, the drum-type washing and drying machine according to the present invention achieves high cleaning performance by sufficiently demonstrating the cleaning power by activating the washing water containing the detergent by increasing the temperature of the laundry. This is useful for washing machines and the like.

1 Washing machine body 2 Water tank 3 Rotating drum 4 Drainage means (drainage valve)
DESCRIPTION OF SYMBOLS 5 Motor 6 Anti-vibration function 7 Laundry 8 Air duct 10 Washing water 11 Control means 12 Heating means 14 Heat exchange path 20 Hot air discharge port 21 Water supply function 22 Temperature detection means 23 Circulation pump

Claims (2)

A water tub disposed inside the washing machine main body, a rotating drum for storing the laundry rotatably disposed in the water tub, a motor for rotationally driving the rotating drum, and the rotating drum A heating means for heating the water tank, a draining means for draining water from the water tank, a circulation pump for circulating the wash water in the water tank, a water level sensor for detecting the water level in the water tank, the motor, the heating means, and the waste water. And a control means for controlling each operation such as rinsing, dehydration, and drying by controlling the operation of the circulation pump and the like, and the control means performs a washing operation in a state where washing water is stored in the water tank. After the washing water in the water tank is drained to a predetermined water level by the draining means, the water tank is heated by the heating means while rotating the rotating drum, and after the predetermined time has passed or the washing water is Drum type washing and drying machine that performs control for driving the circulation pump After a predetermined amount stored in the water tank. 2. A drum type laundry dryer according to claim 1, comprising a hot air circulation path for drying the laundry, wherein the heating means is provided in the hot air circulation path and is used in combination with the heating means during the drying process of the laundry. .

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