KR20020048525A - method for drying clothe in washing machine - Google Patents

Abstract

PURPOSE: A clothing drying method of a combined drying and washing machine is provided to remove any additional heaters, air ducts, fans, condensing units and the like by carrying out the drying step by using a heater for washing water. CONSTITUTION: A clothing drying method of a combined drying and washing machine includes a semi-drying step(S100) of drying clothing by rotating a washing tub at 800rpm or higher, a heat drying step(S200) of controlling the on/off state of a heater according to the dryness of the washing tub to raise the temperature in the washing tub up to a predetermined temperature or higher, and a condensation step(S300) of condensing the humid air in the washing tub by spraying cold water into the washing tub intermittently.

Description

Method for drying cloth in washing machine

The present invention relates to a combined dry washing machine that performs both washing and drying, and more particularly, to dry laundry without having a separate blower fan, a duct, and a condenser to dry the laundry after washing is completed. It relates to a laundry drying method of a combined washing machine.

Generally, a washing machine is a device that removes dirty or dirty substances from laundry by chemical decomposition and mechanical impact.

Among them, the general purpose washing machine is equipped with a heater and a blowing fan, unlike a general washing machine, and when a series of washing operations, washing, rinsing and dehydration, are completed, the heat generated from the heater is blown into the laundry to dry the laundry inside the washing tank. It is a device to let. Therefore, the situation is widely used because it provides convenience for use, such as the advantages of drying the laundry within a short time.

Hereinafter, with reference to the accompanying drawings schematically illustrating the structure of a general dry washing machine as follows.

1 is a view showing a schematic configuration of a conventional combined dry washing machine, the washing tank is lying dry drum washing machine can further increase the washing capacity and does not cause problems such as poking.

As shown in FIG. 1, the combined-use drum washing machine includes a water storage tank (2) for storing wash water that is supported by a damper (8) and a spring (7) in the main body (1) and is supplied with water during washing and rinsing. A washing tank (3) rotatably installed in the washing machine for washing, rinsing, and dehydrating laundry, a motor (4) installed below the water storage tank (2) and supplying rotational force to the washing tank (3), and the motor and washing A pulley 5 and a belt 6 are provided between the shafts (not shown) for transmitting the rotational force of the motor to the washing shaft.

In addition, a washing water heater 9 for raising the temperature of the washing water is provided at an appropriate position between the water storage tank 2 and the washing tank 3, and an air blowing duct communicating with the washing tank is disposed at an outside position of the water storage tank 2. 10) is provided, the blowing fan 13 for forcibly circulating the air on the path of the blowing duct and the drying heater 12 for heating the air supplied to the washing tank on the front of the blowing fan.

When laundry is put into the washing tank 3, a quantity of water is sensed by a proper method, and the washing water is supplied according to the amount of washing. At this time, in order to improve the washing performance, the washing water heater 9 is heated to supply hot washing water. When the water supply of the wash water is finished, the washing tank 3 rotates to start the washing stroke, and then through the series of draining, watering, rinsing, draining, and dehydrating to complete the dehydrating stroke.

On the other hand, when the dehydration is complete, the laundry tank 3 is rotated at low speed, the laundry is evenly mixed, and in this state to drive the drying heater 12 to generate heat at a high temperature while driving the blower fan 13 to the heater The hot air by the heat of the supply is supplied into the washing tank. The hot air dries the laundry and then becomes hot and humid air, which flows into the blowing duct 10, and condenses by supply of cold water while circulating in the blowing duct. At this time, the generated condensate is drained through the appropriate duct and the dry air is continuously circulated to repeat the above-described process to dry the laundry.

The inside of the water tank 2 is provided with a temperature sensor or a humidity sensor detects the temperature or humidity in the washing tank 3, calculates the dryness using the control unit (not shown), and when the drying is complete, all operations It will stop.

However, in the case of the combined dry washing machine, a number of separate apparatuses for performing a drying stroke should be provided. That is, a heater 12 for generating hot dry air, a fan 13 for forcibly circulating the air, a duct 10 for forming a circulation path of the air, and the like.

Therefore, there are many design difficulties in accommodating the apparatuses for performing the drying administration in a narrow free space in the main body, and above all, it is a factor that weakens the price competitiveness.

The present invention has been made to solve the above problems, an object of the present invention is to improve the drying method of the laundry to dry the laundry can be efficiently dried without having a heater, fan, duct, etc. for a separate drying administration It is to provide a laundry drying method of a combined washing machine.

1 is a configuration diagram schematically showing the configuration of a conventional dry washing machine

Figure 2 is a schematic view showing the configuration of a dry-use washing machine according to the present invention

3 is a flow chart illustrating a method of drying laundry according to the present invention.

Figure 4a is a flowchart showing a semi-drying step of the method of drying laundry according to the invention

Figure 4b is a flow chart showing the heat drying step of the laundry drying method according to the invention

Figure 4c is a flow chart showing the condensation step of the laundry drying method according to the invention

Explanation of symbols on the main parts of the drawings

21: reservoir 22: washing tank

23: motor 24: washing shaft

25: water supply pipe 26: drainage pipe

27: drain pump 28: washing water heater

29 detection unit 30 control unit

S100: Semi-drying step S200: Heat-drying step

S300: condensation step

In order to achieve the above object, the laundry drying method of the combined-use washing machine according to the present invention is a semi-drying step of drying the laundry by rotating the washing tank at 800 rpm or more in the dehydration operation or drying stroke of the combined-use washing machine; A heat drying step of controlling the heater on / off according to the degree of drying in the washing tank to raise the temperature in the washing tank to a predetermined temperature or more, and a condensation step of condensing humid air in the washing tank by intermittently spraying cold water into the washing tank. .

The semi-drying step includes a low speed rotation step of rotating the washing tank at a low speed of 800 rpm or less and separating the laundry from the wall surface of the washing tank, and a high speed rotation step of rotating the washing tank at a high speed of 1000 rpm or more. Rotates the washing tank at 1400 rpm, and the low speed rotating step and the high speed rotating step rotate the washing tank in both directions.

The heat drying step may include a heater driving step of heating a washing water heater provided at an outer side of the washing tank to increase an air temperature in the washing tank, and after a predetermined time, a detector provided at an appropriate location of the washing tank detects physical properties of the washing tank and controls A drying degree determining step of determining a drying degree by comparing the physical property value with a preset value, and stopping the driving of the heater when the drying degree is greater than the preset value and controlling the washing water heater again when the drying degree is less than the preset value. Comprising a heater control step, the washing tank rotation step of rotating the washing tank so that the hot air evenly convection in the washing tank when the heater is driven.

The heater control step may include an on / off time control method for adjusting a time for applying power to the heater, or a pulse width modulation (PWM) control method for modifying a predetermined pulse width according to a signal waveform.

On the other hand, in the heat drying step may further include a separate heater for drying air on the outer side of the washing tank, the detection unit is a temperature sensor or humidity sensor is applied.

Finally, the condensation step is a cold water spraying step of spraying cold water to the rear wall surface is not formed in the dehydration hole of the washing tank through the water supply line provided on one side of the water tank, and the condensate formed on the outer wall surface and the inner wall surface of the washing tank to collect the The condensed water drainage step of discharging to the outside through a predetermined conduit, it can be performed in parallel with the washing tank rotating step of rotating the washing tank so that the humid air in the washing tank is condensed during the cold water spraying step. At this time, the condensed water in the washing tank is discharged to the reservoir through the dehydration hole.

Hereinafter, a laundry drying method according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, Figure 2 is a schematic diagram showing the configuration of a dry-use washing machine according to a preferred embodiment of the present invention.

As shown in FIG. 2, the combined washing machine is supported by a damper and a spring in a main body (not shown), and includes a reservoir 21 for storing wash water supplied when washing and rinsing, and rotatably installed in the reservoir. And a washing tank 22 for washing, rinsing, and dehydrating laundry, a motor 23 directly connected to a washing shaft 24 connected to the washing tank in the lower center of the reservoir 21, and the reservoir 21; Washing water heater 28 which is installed in place between the washing tank 22 and raises the temperature of the washing water, and a temperature sensor or humidity sensor which is installed at one side of the washing tank 22 and detects the dryness in the washing tank The detection unit 29 is applied. At this time, the motor 23 is preferably a BLDC motor that is a variable motor.

And, one side of the water tank 21 is provided with a water supply line 25 and the opening and closing valve 25a for supplying cold water to the rear wall surface of the washing tank 22, the other side of the drain pipe for discharging the wash water and condensate water 26 and an on-off valve 26a are provided, and a drain pump 27 is provided on the drain pipe.

Meanwhile, the washing water heater 28, the detection unit 29, the motor 23, the drain pump 27, and the opening / closing valves 25a and 26a are connected to the control unit 30 to operate automatically according to the signal of the control unit. do.

Referring to the laundry drying method of the combined drying machine configured as described above are as follows.

First, FIG. 3 is a flowchart illustrating a method of drying laundry according to the present invention, and FIGS. 4A to 4C are flowcharts illustrating a semi-drying step, a heat drying step, and a condensation step, respectively, of the laundry method according to the present invention.

As shown in Figure 3, the laundry drying method includes a semi-drying step (S100), a heat drying step (S200) and a condensation step (S300) in the dehydration or drying operation.

That is, the laundry drying method is semi-drying to dry by washing the laundry in the washing tank 22 after the series of washing and dehydrating stroke or after only the washing stroke is completed, by rotating the washing tank to 800 rpm or more to lower the water content of the laundry After performing the step (S100), and then driving the washing water heater 28 to increase the temperature in the washing tank 22 and sequentially detects the dryness in the washing tank to control the driving of the heater (S200) After performing the step), the cold water is intermittently sprayed on the washing tank 22 to complete the condensation step (S300) of condensing and discharging the humid air in the washing tank.

Specific steps of the above are as follows.

As shown in Figure 4a, the semi-drying step (S100) is a low-speed rotation step of rotating the washing tank at a low speed of 800 rpm or less to separate the laundry attached to the wall of the washing tank 22 after the dehydration stroke (S110) ) And a high speed rotation step (S120) of lowering the water content of the laundry by centrifugal force by rotating the washing tank after the low speed rotation step to 800 rpm or more.

In the high-speed rotation step (S120), in order to remove more moisture of the laundry, it is preferable to rotate the washing tank 22 at 1000 rpm or more, and more preferably, approximately 70% by rotating the washing tank at about 1400 rpm. A degree of dryness can be achieved.

On the other hand, in the low speed rotation step (S110) and the high speed rotation step (S120), it is advantageous to rotate the washing tank 22 in one direction instead of rotating only in one direction, in particular in the low speed rotation step to separate the laundry The effect is even better.

In the semi-drying step (S100), the step of driving the heater to increase the temperature in the washing tank may also be performed in parallel.

As shown in Figure 4b, the heat drying step (S200) is a heater driving step (S210) to increase the air temperature in the washing tank 22 by applying power to the washing water heater 28 after the completion of the semi-drying step to generate heat. After a predetermined time, the detection unit 29 detects the physical property value, that is, temperature or humidity in the washing tank (S230), and compares the physical property value with a preset value (T ₀ , H ₀ ) in the control unit 30 to dryness in the washing tank. Drying judging step (S240) to determine the, and if the dryness is greater than the preset value in the control unit stops the driving of the heater (S250), if less than the preset value to control the washing water heater on / off air temperature in the washing tank Heat control step (S260) to rise again.

At this time, the heat drying step (S200) includes a washing tank rotating step (S220) for rotating the washing tank at a constant speed when driving the heater so that hot air in the washing tank 22 is convection evenly by the heat generated by the heater 28. . The rotation speed of the washing tank may be a high speed rotation of 800 rpm or more or a low speed rotation of the washing tank.

In addition, the heater control step (S260) may apply on / off time control for adjusting the time for applying power to the heater 28 in the controller 30, or the width of the pulse according to the signal waveform applied to the heater. It is implemented by applying Pulse Width Modulation control that modulates the output to control the output.

On the other hand, in order to improve the efficiency of heat drying, in addition to the washing water heater 28 is provided with a drying heater (not shown) on the outer side of the washing tank separately, to control the drying heater to dry the air in the washing tank or Alternatively, the washing water heater and the drying heater may be combined.

And, since the physical property value that can determine the drying degree in the washing tank 22 is the temperature or humidity, the detection unit 29 is a temperature sensor or humidity sensor is applied. That is, when the temperature sensor is applied to the detection unit 29, if the temperature in the washing tank 22 is less than the preset temperature (T ₀ ), the drying degree determination while controlling the heater 28 on / off time control or pulse width modulation control Step S240 is performed so that the temperature in the washing tank is _equal to or greater than the preset temperature T ₀ . In addition, when the humidity sensor is applied to the detection unit, the above-described process may be repeated until the humidity in the washing tank becomes equal to or less than the preset humidity H ₀ .

As shown in Figure 4c, the condensation step (S300) is a dehydration hole of the washing tank by opening the water supply valve (25a) in the control unit 30 to condense the air in the washing tank 22, the temperature is increased in the heat drying step ( Cold water spraying step (S310) for spraying cold water to the rear wall surface 22a) is not formed, thereby collecting the condensed water formed in the outer wall and the inner wall surface of the washing tank in the reservoir 21 to the outside through the exhaust pipe passage (26) Condensate drainage step (S330) is discharged to.

At this time, it is preferable to perform the washing tank rotating step (S320) in parallel with the cold water spraying step (S310) to rotate the washing tank at a constant speed so that the humid air in the washing tank 22 is condensed well.

That is, in the cold water spraying step (S310), the wet air in the washing 22 tank is condensed by external cold water, and the condensed water is discharged to the water storage tank 21 through the dehydration hole 22a of the washing tank. The condensed water and the cold water flowing through the outer wall of the washing tank are collected at a predetermined position of the water storage tank, and are completely drained out of the main body by the operation of the drain valve 26a and the drain pump 27.

In the laundry drying method of the combined-use washing machine according to the present invention, the drying operation is performed by directly raising the air temperature in the washing tank using the washing water heater in the heat drying step and the condensation step and spraying cold water on the rear wall of the washing tank to perform the drying stroke. Separate heaters, ducts and fans for circulating hot air, and a separate condensing device for condensing the circulating air in the ducts, etc. can be efficiently performed without the drying stroke.

Therefore, there is no need for a separate space for accommodating the apparatuses in the main body, thereby providing the flexibility of the design and improving the price competitiveness.

In addition, in the case of thin laundry such as a shirt, it can be dried at about 70% or more in a semi-drying step that does not require a heater to be operated, so that it can be easily ironed and worn without waste of a long time for drying administration. do.

Claims (14)

In the dehydration stroke or drying stroke of the dry-use washing machine, A semi-drying step of drying the laundry by rotating the washing tank at 800 rpm or more; A heat drying step of raising a temperature in the washing tank by a predetermined temperature or more by controlling the heater on / off according to the drying degree in the washing tank; And a condensation step of condensing humid air in the washing tank by intermittently spraying cold water into the washing tank. The method of claim 1, The semi-drying step is: A low speed rotation step of rotating the washing tank at a low speed of 800 rpm or less to separate the laundry from the wall of the washing tank; The laundry drying method of the combined dry washing machine comprising a high speed rotating step of rotating the washing tank at a high speed of 1000 rpm or more. The method of claim 2, The high speed rotation step is a laundry drying method of the combined dry washing machine to rotate the washing tank at 1400 rpm. The method of claim 2, The low speed rotation step and the high speed rotation step is a laundry drying method of the combined dry washing machine to rotate the washing tank in both directions. The method of claim 1, The heat drying step is: A heater driving step of raising a temperature of air in the washing tank by heating a washing water heater provided at an outer side of the washing tank; After a predetermined time, the drying unit judging step of detecting the physical properties in the washing tank in place of the washing tank and determining the dryness by comparing the physical properties with a predetermined value in the control unit; When the drying degree is a predetermined value or more in the control unit stops the driving of the heater, if the dryness is less than the predetermined value laundry drying method of the combined washing machine comprising a heater control step of driving the washing water heater again. The method of claim 5, The heat drying step is a laundry drying method of a combined washing machine including a washing tank rotating step of rotating the washing tank so that the hot air is convection evenly in the washing tank when the heater is driven. The method of claim 5, The heater control step is a laundry drying method of a dry combined washing machine which is on / off time control for adjusting the time to apply power to the heater. The method of claim 5, The heater control step is a laundry drying method of a dry washing machine, which is a pulse width modulation (PWM) control to modify the width of a predetermined pulse according to the signal waveform. The method of claim 5, Laundry drying method of the combined dry washing machine further comprises a separate heater for dry air on the outer side of the washing tank. The method of claim 5, The detection unit is a laundry drying method of a dry washing machine that is a temperature sensor. The method of claim 5, The detection unit is a laundry drying method of a dry washing machine that is a humidity sensor. The method of claim 1, The condensation step is: Cold water spraying step of spraying cold water to the rear wall surface is not formed through the water supply pipe provided on one side of the water tank; And a condensate drainage step of collecting condensate water formed on outer and inner wall surfaces of the washing tank in a water storage tank and discharging the condensate to the outside through a predetermined pipe. The method of claim 12, The laundry drying method of the combined drying washing machine in parallel with the washing tank rotating step of rotating the washing tank so that the wet air in the washing tank is condensed during the cold water spraying step. The method of claim 12, Condensed water in the washing tank is a laundry drying method for a dry dog washing machine is discharged to the water tank through the dehydration hole.