JP2005124767A - Drum type washing and drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum type washing and drying machine in which washing power is improved by executing a washing process using detergent bubbles. <P>SOLUTION: At the time of starting washing, by supplying water to a water level lower than a predetermined water level corresponding to the amount of laundry inside a water tub 3 and rotationally driving a rotary drum 2 at a rotation speed higher than the one at the time of washing, water in which a detergent is dissolved in high concentration is foamed, the detergent bubbles are generated and the laundry is washed with the bubbles. A blowing fan 15 and a heater 20 are controlled so that the detergent bubbles filled inside the water tub 3 do not flow into a heating pipeline 19 from a blowing port 22 opened inside the water tub 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a drum-type washing / drying machine in which laundry is accommodated in a rotating drum that is rotatably disposed in a water tub, and each step of washing, rinsing, dehydration, and drying is performed.

  A drum-type washing machine for washing laundry by sequentially executing a washing process, a rinsing process, and a dewatering process by putting the laundry in a rotating drum rotatably arranged in the water tank and rotationally driving the rotating drum. By being provided with a drying function, the drum type washing machine can be configured as a drum type washing and drying machine capable of executing a drying process for drying the laundry after the dehydration process.

In the drying function, air containing moisture in the water tank is exhausted to the outside of the tank, the moisture in the air exhausted by the dehumidifying means is dehumidified, and then heated and dried by the heating means to be blown into the water tank again. It can be constituted as follows. When such a drum-type washing and drying machine is configured, it often has an influence on the configuration of the drying function when the washing process is performed. Moreover, the problem which generate | occur | produces in the structure of a drying function can also be eliminated in a washing process or a rinse process. For example, there is a problem that lint generated from the laundry in the drying process adheres to the exhaust hose and the dehumidifying means adjacent to the rotating drum. In order to prevent the attachment of the yarn waste and the like, there is known a drum type washing and drying machine in which the yarn waste attached by the water in the rinsing process is washed away so as not to obstruct the flow of the circulating air (see Patent Document 1). ).
Japanese Patent Laid-Open No. 11-333185 (pages 3 to 5, FIG. 1)

  As described above, the drum-type washing / drying machine is the most important function as a washing machine because an air circulation path is formed to exhaust the air in the water tank and return it to the water tank again in order to configure the drying function. When constructing a drum-type washing / drying machine that performs a washing process using detergent foam in which a high-concentration detergent solution is foamed to improve detergency, the detergent foam generated in the water tank opens toward the water tank. When entering the air circulation path from the blower port, there is a problem that it adheres to the heating means, the blower means and the like disposed in the air circulation path and lowers their functions.

  An object of the present invention is to provide a drum-type washing / drying machine provided with means for solving the above-mentioned problems that occur when a drum-type washing / drying machine having a drying function is configured to perform a washing process by foam washing. It is to provide.

  In order to achieve the above object, a drum-type washing / drying machine according to the present invention includes a rotating drum that is rotationally driven by a drum driving motor in which laundry is accommodated in a cylindrical drum having a large number of through holes in a peripheral wall. A water tank provided in the water tank is provided with a water supply means for supplying water into the water tank and a drain means for draining from the water tank, and the air exhausted from the water tank is passed through an air circulation path provided with a dehumidifying means, a blowing means, and a heating means. An air circulation path for drying that blows air into the water tank from the blower opening formed on the back surface of the water is provided, and control means for controlling the operation of each part according to each process of washing, rinsing, dehydration, and drying is provided. The control means controls the water supply means at the start of the washing process to supply water to a predetermined water level lower than the standard water level at which the washing process is carried out in the water tank, and the drum drive motor to control the washing. A foam generating operation for rotating the rotating drum for a first predetermined time at a second predetermined rotational speed that is faster than the first predetermined rotational speed in the process, and air blowing that blows air from the air outlet into the water tank by controlling the air blowing means And performing a control operation.

  According to the above configuration, at the start of washing, the control means supplies water to a level lower than that required at the time of executing the washing process, and controls to rotate the rotating drum at a higher rotational speed than at the time of executing the washing process, so that there is little A detergent solution having a high concentration in which the detergent is dissolved in the amount of water is obtained, and is agitated by the water flow accompanying the rotation of the rotating drum, so that a large amount of detergent bubbles are generated. The generated detergent foam flows into the rotating drum and is applied to the laundry, so that foam washing is performed in the washing process to improve the cleaning power. The detergent bubbles generated in the water tank may flow into the air circulation path from the air outlet and adhere to the air blowing means or the heating means. However, the air circulation is achieved by controlling the air blowing means by the control means and blowing air from the air outlet. It is possible to prevent detergent bubbles from flowing into the road.

  In the above configuration, the control means controls the heating means during the air blowing control operation so as to heat the air blown from the air blowing port into the water tank, thereby suppressing the inflow of the detergent bubbles into the air circulation path. The detergent bubbles that flowed in can be defoamed with heated air.

  In addition, the control means preferably controls the amount of air blown from the air blowing port during the air blowing control operation to be less than the amount of air blown in the drying process, and is controlled to prevent the detergent bubbles from flowing in from the air blowing port. Since the air volume is sufficient, it is possible to suppress the blown air volume and prevent the detergent bubbles from disappearing due to the air flow.

  Further, after the foam generation operation, the control means performs an initial foam washing operation of rotating the rotating drum at a first predetermined number of rotations for a second predetermined time by a reversal cycle shorter than a rotation direction reversal cycle of the rotating drum in the washing process. If it controls so that it may carry out, the laundry can be stirred and the detergent foam which flowed into the rotating drum can be spread over all the laundry uniformly.

  In addition, in the water supply control operation in which additional water is supplied to the standard water level in the washing process after the foam generation operation, the control means performs a foam dilution operation in which the rotating drum is rotated at the first predetermined rotation speed by a rotation direction reversal cycle in the washing process. If it controls so that it may perform, a detergent foam can be mixed in washing water and the washability in a washing process can be improved.

  According to the present invention, when the foam washing function is applied to the washing process in the drum type washing and drying machine, the detergent foam generated in the washing process enters the air circulation path from the air opening that opens into the water tank. Thus, the drying function is not impaired by the foam cleaning function, and the drum type washing and drying machine having improved cleaning performance by the foam cleaning can be configured.

  FIG. 1 shows a configuration of a main part of a drum-type washing / drying machine 1 according to the embodiment. A water tank 3 is supported in an obliquely inclined state by a suspension structure (not shown) in a washing machine housing 6, The rotary drum 2 formed in a bottomed cylindrical shape is rotatably supported. The rotary drum 2 is rotationally driven by a drum drive motor 7 attached to the back of the water tank 3 so that the rotational speed can be varied and the rotational direction can be switched. Further, since the rotating drum 2 is inclined so that the direction of the rotation axis is inclined downward from the front side opening as shown in the drawing toward the back side as the bottom surface, the front side of the washing machine casing 6 is arranged. Opening the door body 9 that can be freely opened and closed on the inclined surface 6a formed on the rotating drum 2 reduces the amount of bending when the laundry is taken in and out of the rotary drum 2, and the drum type laundry dryer 1 Since there is no need to secure a space on the front side, the drum type washing / drying machine 1 can be installed in a narrow space such as a washroom.

  In addition to the above-described components, the washing machine housing 6 includes a water supply unit 12 for supplying water into the aquarium 3, a drainage unit 13 for draining water in the aquarium 3 to the outside, and the like. Further, as shown in FIGS. 2 and 3, the air in the water tank 3 exhausted from the exhaust port 21 is dehumidified so that a drying process of drying the laundry accommodated in the rotary drum 2 can be performed. 16, a drying air circulation path through which air is blown again from the blower opening 22 into the water tank 3 through the yarn waste collecting filter 17, the blower duct 18, and the heating duct 19 is configured.

  As shown in FIG. 2, the dehumidification pipe line 16 is formed adjacent to the side peripheral surface of the water tank 3, and communicates with the inside of the water tank 3 through an exhaust port 21 that opens to the side peripheral surface of the water tank 3. Dehumidifying means 38 having a water injection nozzle 52 and a heat exchanger 51 through which water sprinkled from the water injection nozzle 52 flows is disposed in the dehumidification pipe line 16, and the air in the water tank 3 exhausted from the exhaust port 21. Is dehumidified by being cooled by the dehumidifying means 38. The dehumidifying duct 16 is connected to the air duct 18 on the front side of the washing machine housing 6, and a lint collecting filter 17 that filters dust such as lint contained in the air is provided at the inlet of the air duct 18. It is arranged. The air duct 18 is a duct for guiding air to the heating duct 19 disposed on the back side of the water tank 3, and is disposed adjacent to the side peripheral surface of the water tank 3 together with the dehumidifying duct 16. As shown in FIG. 3, the air duct 18 is connected to a heating duct 19 formed in a substantially arc shape on the back side of the water tank 3, and the air circulation path for drying is provided by the air fan 15 disposed in the connection portion. A one-way air flow is formed.

  A heater 20 is disposed in the heating pipe 19 and heats the air flowing from the blower pipe 18 and feeds it into the water tank 3 as hot air that has been heated and dried from a blower opening 22 that leads to the water tank 3. . The heating pipe 19 is provided with a temperature sensor 55 that constitutes a temperature detector 54 that detects the temperature of the air blown from the blower opening 22, and the detected temperature of the blown air is input to the control device 40 described later. The heating temperature by the heater 20 can be adjusted. The heating pipe 19 detects an abnormal overheating state of the heater 20 and shuts off the power to the heater 20, and the overflow water level where water or bubbles flowing back from the blower port 22 flows into the blower fan 15 side. An overflow water level sensor 29 for detecting the above is disposed.

  The drum-type washing / drying machine 1 configured as described above performs a washing process, a rinsing process, and a dehydrating process by a control operation by the control device 40, and a drying process is executed as necessary. The drum-type washing / drying machine 1 is configured to perform foam washing using detergent foam obtained by foaming water in which detergent is dissolved at a high concentration in the washing process.

  FIG. 4 shows the configuration of the control device 40. A control unit 41 constituted by a microcomputer is stored in the storage unit 45 in accordance with setting inputs such as selection of a driving course input from the setting unit 43. A control command is output to the power switching unit 42 using the control program. The power switching unit 42 is configured using a switching element such as an SCR, and in response to a control command output from the control unit 41, the drum drive motor 7, the water supply valve 50, the drainage pump 49, the blower fan 15, the heater 20, and the water injection valve ON / OFF control of 53 and the like.

  Hereinafter, the control operation of the washing process by the control device 40 will be described with reference to the flowchart shown in FIG. 5, W1, W2,... Are step numbers indicating a control procedure for controlling water supply into the water tank 3, and R1, R2,... Are control procedures for controlling the rotation of the rotary drum 2 by the drum drive motor 7. F1, F2,... Are step numbers indicating the control procedure of the air blowing control by the blower fan 15 and the heater 20, and coincide with the numbers appended in the text.

  The door body 9 is opened, the laundry is put into the rotary drum 2, a required amount of detergent is put into the detergent inlet provided in the water supply unit 12, and the power switch 48 is operated to turn on the washing machine casing 6. By selecting and inputting a driving course according to the type of laundry from the setting unit 43 on the operation panel provided on the surface of the laundry, and performing an operation input for starting the operation, the control unit 41 controls the control program corresponding to the setting input. Is read from the storage unit 45, and a control operation corresponding to the control procedure is started. First, the control unit 41 detects the amount of laundry put into the rotating drum 2 by rotating the rotating drum 2. Since the cloth amount detection unit 46 detects the amount of laundry from the load change received by the drum drive motor 7 according to the amount of laundry, the detected amount of laundry is input to the control unit 41 and stored in the storage unit 45. Remembered.

  First, a washing process is started, and in the washing process, water supply control, rotation control of the rotating drum 2 and air blowing control of the blower fan 15 are executed. The control unit 41 opens the water supply valve 50 and outputs a control command for supplying water into the water tank 3 to the power switching unit 42, and at the same time, provides a control command for rotating the rotary drum 2 at the first predetermined rotation speed to the power switching unit 42. Output. With this control operation, the water supply valve 50 is opened, and tap water is supplied from the water supply pipe connected to the water supply unit 12, and water mixed with detergent is supplied into the water tank 3 (W1).

  It is desirable to perform a water-containing operation in which the laundry is wetted with water supplied during the water supply operation, and the rotary drum 2 is rotationally driven by the drum drive motor 4 at the first predetermined rotational speed in parallel with the water supply (R1). The first predetermined rotational speed is when the laundry stored in the rotating drum 2 is lifted in the rotating direction by the rotation of the rotating drum 2 and moves to a height position where the weight of the laundry is higher than the inertia and centrifugal force associated with the rotation. It is a rotational speed which shows the behavior which falls on the lower inner peripheral surface of the rotating drum 2. Further, the control unit 41 outputs to the power switching unit 42 a control command for the first reversal cycle that reverses the rotation direction of the drum drive motor 7 in the normal rotation direction and the reverse rotation direction at predetermined time intervals. Rotates at a first predetermined rotational speed and reverses the rotational direction in a first predetermined reversal cycle (R2).

  Agitating protrusions 4 (see FIG. 2) are provided at a plurality of positions on the inner peripheral surface of the rotating and rotating drum 2. When the rotating drum 2 rotates at a first predetermined rotation speed, the agitating protrusions 4 are arranged inside the rotating drum 2. Hang the laundry in contact with the peripheral surface and lift it in the direction of rotation. Since the laundry falls when its own weight is lifted up to a height that surpasses the inertia and centrifugal force associated with rotation, the laundry accumulated in the rotating drum 2 is also lifted one after another and moved and falls from above. At the same time as the accumulated state is separated, the laundry is given a washing action by the impact of dropping. When the rotational speed is lower than the first predetermined rotational speed, the action of lifting the laundry does not occur, and conversely, the centrifugal force increases at a rotational speed faster than the first predetermined rotational speed. It will stick to and will not fall.

  In parallel with the rotational driving of the rotating drum 2, the water supply is continued in the water tank 3, so that the water supplied into the water tank 3 is supplied from the through holes 8 formed in the peripheral surface of the rotating drum 2 to the rotating drum 2. It also intrudes inside. Therefore, when the laundry that is rotated at the first predetermined rotation speed and is repeatedly lifted and dropped by the rotating drum 2 whose rotation direction is reversed in the first reversal cycle is sufficiently stirred, the laundry is dropped at the same time. It becomes wet evenly in the water.

  When the water level in the supplied water tank 3 is detected by a water level detection unit 47 provided in the water tank 3, the water level becomes a second predetermined water level lower than the first predetermined water level at which the washing operation is performed (W2). ) Since the water level detection unit 47 inputs the detection output to the control unit 41, the control unit 41 outputs a control command for closing the water supply valve 50 and stopping the water supply to the power switching unit 42, so that the water supply is stopped (W3). ).

  When the water is supplied to the second predetermined water level in the water tank 3, the control unit 41 outputs a control command for rotationally driving the rotary drum 2 to the drum drive motor 7 at a second predetermined rotational speed that is faster than the first predetermined rotational speed. Therefore, the rotary drum 2 is rotationally driven at the second predetermined rotational speed (R3), and the bubble generating operation is started. The second predetermined rotation speed is a rotation speed that allows the laundry to stick to the inner peripheral surface of the rotary drum 2 due to the centrifugal force accompanying the rotation of the rotary drum 2. When the operation of rotating the rotary drum 2 at the second predetermined rotation speed is executed for the first predetermined time (R4), a high-concentration detergent liquid in which a required amount of detergent is mixed in a small amount of water supply is obtained. As the rotary drum 2 rotates, a water flow is generated and bubbles are likely to be generated.

  As shown in FIGS. 1 to 3, a drainage groove 10 is formed at the lowermost part of the water tank 3 in a direction orthogonal to the rotation direction (arrow A direction) of the rotary drum 2. Since the directions cross each other, a turbulent flow (arrow B) is generated in the water flow by the side wall, and the washing water mixed with the detergent at a high concentration becomes foamed by the turbulent flow.

  In general, detergent molecules consist of hydrophilic groups and lipophilic groups. In detergent solutions that are dissolved in water, the detergent molecules are aligned at the interface (water surface), and the detergent molecules that cannot be arranged are present individually or as micelles (groups) in the water. To do. As soon as the interfacial detergent molecules are removed, the detergent molecules in the water move to the interface and are replenished. When bubbles generated by turbulent flow are sent to the detergent liquid, the bubbles rise to reach the interface, and detergent bubbles in a form in which the detergent molecules aligned with the interface are held in the foam film as they are are generated. Since the detergent foam has as many detergent molecules as possible, the detergent concentration is also high. Since the detergent molecules in the liquid move to replenish the detergent molecules removed as detergent bubbles, detergent bubbles are created one after another when bubbles are sent one after another.

  The detergent foam generated in large quantities fills and rises between the water tank 3 and the rotating drum 2 and invades one after another into the rotating drum 2 from the open front side opening and adheres to the laundry. The laundry is stuck to the inner peripheral surface of the rotating drum 2 rotating at the second predetermined rotation speed, and detergent bubbles easily enter the space vacated in the center of the rotating drum 2, and washing is performed through the through holes 8. Since there is also a state in which the detergent foam penetrates into the laundry, the detergent foam adheres to the laundry. The laundry is in a state of being evenly wetted by the water-containing operation in the previous steps R1 and R2, and when detergent bubbles adhere to the laundry, the detergent components easily penetrate into the laundry.

  When the detergent foam penetrates the surface or the interior of the soiled laundry, the lipophilic group is bound to the oil soil and the particle soil adhered to the oil and carried away. In addition, if the detergent foam breaks when passing through the laundry, a high concentration of detergent liquid will permeate into the laundry, and the dirt will be easily removed, so that the laundry can be washed with the detergent foam. . By making the detergent liquid into a detergent foam having a large volume and adhering and penetrating into the laundry in the rotary drum 2 in this way, the detergent component is likely to act on the dirt, and the detergent liquid of high concentration is likely to permeate, resulting in uneven washing. It is suppressed and the washing time can be improved and at the same time the washing time can be shortened.

  It is desirable to perform the initial foam cleaning operation after the first required time for the detergent foam generated in a sufficient amount to enter the rotary drum 2 has passed, so that the detergent foam is uniformly applied to the laundry. Rotates the rotating drum 2 at a first predetermined rotation speed (R5), and outputs a control command to the power switching unit 42 to reverse the rotation direction in a second predetermined reversal cycle shorter than the first predetermined reversal cycle. (R6). By continuing this initial foam cleaning operation for the second predetermined time (R7), the detergent foam filled in the rotating drum 2 is uniformly applied to the laundry, and the foam washing is performed on all the laundry. A state where the effect spreads out is obtained.

  Subsequently, since the control part 41 opens the water supply valve 50 and outputs the control command which replenishes water in the water tank 3 to the power switching part 42, the water supply valve 50 is opened and supply water supply is started (W4). It is desirable to perform a foam dilution operation in which the detergent bubbles are mixed with the water supplied during the replenishment water supply, and the control unit 41 continues to rotate the rotary drum 2 at the first predetermined rotation speed in parallel with the replenishment water supply. Then, a control command for reversing the rotation direction in the first predetermined reversal cycle is output to the power switching unit 42 (R8). By this foam dilution operation, the detergent foam is mixed into the water to be supplied and supplied, and a state in which the subsequent foam washing operation is sufficiently performed is obtained.

  The water level in the supplied water tank 3 is detected by the water level detection unit 47, and when the first predetermined water level is detected (W5), the water level detection unit 47 outputs a detection output to the control unit 41. By the control command from, the water supply valve 50 is closed and the water supply is stopped (W6). The first predetermined water level is a water supply amount corresponding to the amount of laundry, and is first detected by the cloth amount detection unit 46 as described above, and the detected amount of laundry is stored in the storage unit 45. Therefore, the water supply is stopped when the first predetermined water level that is the amount of water supply corresponding to the amount of laundry is detected.

  When the replenishment water supply to supply water to the first predetermined water level is completed, the control unit 41 performs the operation for rotating the rotating drum 2 at the first predetermined rotation speed and the first predetermined reversal cycle for a third predetermined time required for foam cleaning. (R9), the washing water mixed with the detergent foam is used to lift and drop the laundry covered with the detergent foam, and the action of tapping is added. By switching the rotation direction between the normal rotation direction and the reverse rotation direction at time intervals, it is possible to remove dirt from the laundry in a short washing time. When the third predetermined time required for foam cleaning elapses, the control unit 41 outputs a control command for stopping the rotation of the rotary drum 2 (R10), so that the washing process is terminated and the rinsing process is subsequently started. .

  As shown in FIGS. 2 and 3, the air blowing port 22 that opens toward the water tank 3 is provided at the center of the water tank 3 so that the blown air is uniformly supplied to the laundry accommodated in the rotating drum 2 during the drying process. When the rotary drum 2 is inclined and arranged as in the configuration of the present embodiment, the blowing port 22 is opened obliquely upward, so that the detergent bubbles generated in the water tank 3 Becomes easy to flow into the heating pipe line 19 from the blower opening 22. Since it is not preferable that a large amount of detergent foam flows into the heating pipe line 19, the control unit 41 rotationally drives the blower fan 15 in accordance with the foam generation operation and blows air from the blower opening 22 into the water tank 3 ( F <b> 1), and executes a control for preventing the detergent foam from flowing into the heating pipe line 19.

  The blowing amount for suppressing the inflow of detergent bubbles by the blowing fan 15 may be a second rotation speed that is slower than the first rotation speed at which the necessary blowing amount is obtained in the drying process. Moreover, if it controls so that the heater 20 may energize and heat the air heated from the ventilation port 22 as needed (F2), the detergent foam which flowed into the heating pipe line 19 can be erased. Thereafter, when the bubble generating operation is finished, the energization of the heater 2 is stopped (F3), and the rotation of the blower fan 15 is stopped (F4). The heater 2 and the blower fan 15 may be stopped after the bubble cleaning operation is completed, and an equivalent effect can be obtained. The operation control of the blower fan 15 and the heater 20 may be executed corresponding to the foam generation operation. However, a foam detection sensor is provided in the vicinity of the air outlet 22 of the heating pipe 19 so that the detergent foam is heated from the air outlet 22. When the bubble detection sensor detects that the air has flowed into the duct 19, the blower fan 15 can be driven to rotate, and the heater 20 can be energized when the amount of inflow is large.

  After the washing step, the rinsing step, and the dehydrating step, the drying step can be optionally performed to dry the dehydrated laundry or dry wet clothes. When the execution of the drying process is selected and input from the setting unit 43, the control unit 41 turns on the blower fan 15 and the heater 20 and outputs a control command to open the water injection valve 53 to the power switching unit 42. Then, the air blowing fan 15 is rotationally driven to perform a drying operation for circulating the air in the water tank 3 through the drying air circulation path.

  As shown in FIG. 2, the air in the rotary drum 2 is discharged into the water tank 3 from the through holes 8 formed in the peripheral surface by the rotation of the blower fan 15 and is exhausted into the dehumidifying conduit 16 from the exhaust port 21. A heat exchanger 51 is disposed in the dehumidifying conduit 16, and dehumidifying means 38 is configured to sprinkle water injected by opening the water injection valve 53 from the water injection nozzle 52 onto the heat exchanger 51. Therefore, the air containing the moisture exhausted into the dehumidifying pipeline 16 is cooled and dehumidified. The air dehumidified in the dehumidifying pipe 16 passes through the lint collecting filter 17, passes through the blower pipe 18, is led to the rear of the water tank 3, flows into the heating pipe 19 provided on the back surface of the water tank 3, and is heated. It is heated by 20 and blown into the water tank 3 from the blower port 22. Since the air blown into the water tank 3 flows into the rotary drum 2 through the air holes 39 and the through holes 8 formed on the bottom surface of the rotary drum 2, moisture is taken away from the laundry by the dehumidified and heated air. Drying of all the laundry is promoted by stirring by the rotation of the drum 2, and the laundry is dried by repeating this air circulation for a predetermined time.

  In the embodiment described above, the configuration in which the rotary drum 2 is inclined is shown. However, the same configuration can be made when the rotary drum 2 is arranged in the horizontal direction.

  As described above, according to the present invention, the washing performance can be improved by washing the foam in the washing process, so that the laundry can be cleaned in a shorter washing time, and the generated detergent foam can be used in the drying process. Since there is no influence on the configuration for performing, it is possible to provide a drum-type washing and drying machine with excellent cleaning performance.

Sectional drawing which shows the principal part structure of the drum type washing-drying machine which concerns on embodiment. Sectional drawing which shows the structure of the drying function with which a drum type washing-drying machine same as the above is provided. The top view on the water tank back side which shows the structure in a heating pipe line. The block diagram which shows the structure of the control apparatus with which a drum type washing-drying machine same as the above is provided. The flowchart which shows the control procedure by a control apparatus same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drum type washing dryer 2 Rotating drum 3 Water tank 7 Drum drive motor 15 Blower fan (blower means)
16 Dehumidification pipeline (dehumidification means accommodation room)
17 Waste thread recovery filter (dust removal means)
18 Blower Line 19 Heating Line 20 Heater 21 Exhaust Port 22 Blower Port 37 Projecting Part 38 Dehumidifying Means
Three

Claims (5)

A rotating drum that accommodates laundry in a cylindrical drum having a large number of through holes in the peripheral wall and is driven to rotate by a drum driving motor is disposed in the water tank, and supplies water to the water tank. Air circulation for drying, which is provided with drainage means for draining from the water tank and blows air exhausted from the water tank into the water tank through the air circulation path provided with dehumidification means, air blowing means and heating means into the water tank A route is provided, and control means for controlling the operation of each part according to each process of washing, rinsing, dehydration, and drying is provided,
The control means controls the water supply means at the start of the washing process to supply water to a predetermined water level lower than the standard water level at which the washing process is carried out in the aquarium, and controls the motor to control the water supply in the washing process. A foam generating operation for rotating the rotating drum for a first predetermined time at a second predetermined rotational speed that is faster than a predetermined rotational speed of 1, and an air blowing control operation for controlling the air blowing means and blowing air into the water tank from the air outlet. A drum-type washer-dryer characterized in that The drum type washing and drying machine according to claim 1, wherein the control means controls the heating means during the air blowing control operation so as to heat the air blown into the water tank from the air blowing port. The drum-type washing and drying machine according to claim 1 or 2, wherein the control means controls the air volume from the air outlet during the air flow control operation to an air volume that is smaller than the air volume in the drying step. After the foam generation operation, the control means executes an initial foam washing operation for rotating the rotating drum at a first predetermined rotation speed for a second predetermined time by a reversal cycle shorter than the rotation direction reversal cycle of the rotating drum in the washing process. The drum type washing-drying machine as described in any one of Claims 1-3. The control means executes a foam dilution operation for rotating the rotating drum at a first predetermined rotation speed by a rotation direction reversal cycle in the washing process in the water supply control operation for supplying water to the standard water level in the washing process after the foam generating operation. The drum type washing-drying machine as described in any one of Claims 1-3.

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