KR101366561B1 - Washing machine and dry control method thereof - Google Patents

Abstract

The present invention relates to a washing machine equipped with a drying apparatus and a drying control method thereof, and an object thereof is to obtain an optimum drying performance and drying efficiency by adjusting a drying time according to a condensate temperature used in a drying administration.

To this end, the present invention provides a control method of a washing machine for drying a laundry equipped with a drying apparatus, the method comprising: detecting a dry weight according to a weight of laundry; Retrieving a drying time corresponding to the sensed dry weight; Sensing the temperature of condensate supplied when the laundry is dried; Setting and changing the found drying time according to the detected temperature of the condensate; And operating the drying apparatus according to the set drying time to proceed with the drying administration.

Description

Washing machine and dry control method

1 is a sectional view showing the construction of a washing machine equipped with a drying device according to the present invention,

2 is a control block diagram of a washing machine equipped with a drying device according to the present invention,

3 is a flow chart showing a drying control operation procedure in the washing machine with a drying apparatus of the present invention;

4 is a table set by classifying the drying time according to the weight of the raisins of the present invention,

5 is a table set by classifying the acceleration and decrease drying time according to the condensate temperature of the present invention,

Figure 6 is an experimental data showing the drying time and drying time according to the condensate temperature of the present invention.

Description of the Related Art [0002]

11: water tank 12: rotary drum

20: water supply device 30: drainage device

40: drying device 41: drying fan

44: Dry heater 47: Spray nozzle

48: Condensate supply line 49: Condensate valve

50: temperature sensor 100: signal input

120: dryness detection unit 130: control unit

The present invention relates to a washing machine equipped with a drying apparatus, and more particularly, to a washing machine for controlling the drying time by sensing the condensate temperature used in the drying administration and a drying control method thereof.

BACKGROUND ART Generally, a drying apparatus is a device for drying clothes by supplying heated air heated by a heater to a drum while rotating a drum containing wet clothes (laundry) at a low speed. Recently, a drying and washing machine Usually a drum washing machine) is released, so that only the drying stroke is performed alone, or the drying stroke is performed after completion of dewatering in connection with the washing stroke.

Washing machine equipped with such a drying device is Korea Patent Publication No. 10-0435241.

In the washing machine disclosed in the publication, in order to dry the laundry after the dehydration operation is completed, the hot dry air (hot air) generated by the heater and the fan flows into the drum to take out the moisture contained in the laundry, and then turns into high temperature and high humidity air. Conveyed by condensing duct). In this process, condensation is performed to remove moisture taken from the laundry. To this end, cold water (condensed water) is brought into contact with hot and humid air to condense the hot and humid air into condensed air. The laundry is dried again by repeating the process of heating by the heater and flowing into the drum.

The condensate used in this condensation process is tap water (cold water) used in ordinary households, and its temperature changes according to the season and various environmental factors. For example, it has a temperature distribution of up to 30 ° C in summer and a minimum of 5 ° C in winter, and in some Middle East countries, the temperature of general tap water often exceeds 45 ° C. In this case, when the temperature of the condensate is low, the condensation is good, and the drying performance is good.

However, since the algorithm (specifically, drying time) used for drying in a conventional washing machine equipped with a drying apparatus is applied in the same way regardless of the temperature difference of the condensate, the drying performance and drying efficiency are deteriorated according to the condensate temperature. There was a problem causing.

That is, if the temperature of the condensate is low, even though it is sufficiently dried due to the low temperature of condensate, if it continues to dry for the remaining drying time, it is not good for the system due to overdrying and damage to the clothing as well as overheating inside the set. On the contrary, if the temperature of the condensate is high, on the contrary, even if the drying time is insufficient due to the high temperature of the condensate, if the drying is completed after a predetermined drying time, the user may be dissatisfied due to undrying.

Accordingly, the present invention is to solve the conventional problems as described above, an object of the present invention is to provide a drying apparatus that can obtain the optimum drying performance and drying efficiency by adjusting the drying time according to the condensate temperature used during the drying stroke To provide a washing machine and its drying control method provided.

In order to achieve the above object, the present invention provides a control method of a washing machine for drying a laundry equipped with a drying apparatus, the method comprising: detecting a dry weight according to a weight of the laundry; Searching for a drying time corresponding to the sensed dry weight; Sensing the temperature of condensate supplied when the laundry is dried; Changing and setting the searched drying time according to the sensed temperature of the condensed water; And operating the drying apparatus according to the set drying time to proceed with a drying administration.

In addition, the step of detecting the temperature of the condensed water, characterized in that for detecting the temperature of the cold water supplied to remove the moisture contained in the laundry.

The setting of the drying time may include setting the drying time shorter as the sensed temperature of the condensate is lower, and setting the drying time longer as the temperature of the condensate is higher.

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In addition, changing the drying time is characterized by reducing the drying time when the condensate temperature is lower than the reference temperature range, and increasing the drying time when the condensate temperature is higher than the reference temperature.

In addition, the reference temperature range is characterized in that the range of 15.1 ~ 25 ℃.

And, the present invention is a rotating drum for receiving the laundry to be dried; A drying device for drying the laundry by supplying hot air into the rotating drum; A duct for guiding an air flow path of hot air supplied into the rotating drum; A valve controlling a supply of condensed water when the laundry is dried; A temperature sensor for sensing the temperature of the condensate being supplied; And controlling the valve to supply condensed water to the duct and to set a drying time based on the temperature of the condensed water detected by the temperature sensor; And a controller configured to perform a drying stroke by operating the drying apparatus according to a set drying time, wherein the controller detects a dry weight according to a weight of laundry to be dried, and detects a dry time found according to the detected dry weight. It is characterized by resetting by changing according to the condensate temperature.

In addition, the drying apparatus includes a heater and a fan for generating hot air supplied into the rotating drum.

In addition, the duct is characterized in that the hot air supplied into the rotating drum guides the air, which has been changed to high temperature and high humidity by the moisture contained in the laundry toward the drying apparatus.

In addition, the temperature sensor is characterized in that for detecting the temperature of the cold water supplied to the duct to remove the moisture contained in the laundry.

The control unit may set the drying time shorter as the detected temperature of the condensate is lower, and set the drying time longer as the temperature of the condensate is higher.

The control unit may reduce the drying time when the condensate temperature is lower than the reference temperature range by comparing the condensate temperature with a predetermined reference temperature range, and increase the drying time when the condensate temperature is higher than the reference temperature.

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

1 is a sectional view showing the construction of a washing machine equipped with a drying device according to the present invention.

In FIG. 1, a washing machine equipped with a drying apparatus of the present invention includes a drum-shaped water tank 11 installed inside the main body 10 for fresh water of washing water (washing water and rinsing water), and the inside of the water tank 11. It is rotatably installed on and includes a rotating drum 12 formed with a plurality of dehydration holes.

A motor 13 for rotating the rotary drum 12 in a forward or reverse direction is installed in the lower part of the water tub 11 and a water temperature selection A washing heater 16 for heating water (specifically, washing water) supplied into the water bath 11 is installed.

An opening 14 is formed in front of the water tub 11 and the rotary drum 12 to allow the user to pull out the clothes from the front of the body 10. The opening 14 is formed in front of the body 10, A door 15 is provided.

The upper part of the water tank 11 is provided with a detergent supply device 18 for supplying a detergent, and a water supply device 20 for supplying water (washing water and rinsing water).

The detergent supply device 18 is partitioned into a plurality of spaces and is installed on the front side of the main body 10 so that the user can easily insert detergent and rinsing agent into the respective spaces.

The water supply device 20 includes a water supply pipe 22 for supplying water and a water supply valve 24 installed in the water supply pipe 22 to control water supply to the water supply pipe 22. The water supply pipe 22 is supplied from the outside Is connected to the detergent supply device 18 so that water can be supplied to the detergent supply device 18 side. A separate connection pipe 26 is provided between the detergent supply device 18 and the water tub 11 so that the water passing through the detergent supply device 18 can be supplied to the water tub 11 together with the detergent. And a water supply nozzle 28 is provided at an outlet of the water supply nozzle 26. This allows the detergent in the detergent supply device 18 to be supplied to the water tub 11 in a state in which the detergent is dissolved in the water.

The present invention also includes a drainage device (30) for draining water inside the water tub (11). The drainage device 30 includes a drainage pipe 31 connected to a lower portion of the water tub 11 so as to guide the water in the water storage tank 11 to the outside and a drainage pump 32 installed in the drainage pipe 31.

In addition, the present invention includes a drying device 40 for drying the laundry (clothing). The drying apparatus 40 includes a drying fan 41 installed on the top of the water tank 11, an air inlet 45 formed above the discharge port 41b of the drying fan 41 and the opening 14 of the water tank 11. Condensation mounted on the rear of the water tank 11 to connect between the drying duct 42, the air outlet 46 formed in the rear lower portion of the water tank 11 and the inlet 41a of the drying fan 41 to connect between A duct 43 and a drying heater 44 installed inside the drying duct 42 to generate hot air supplied into the rotary drum 12.

In addition, the condensate duct (43) inside the condensation duct (43) to condense and remove moisture in the process of passing the hot and humid air generated through the drying of the laundry through the condensation duct (43). A spray nozzle 47 for spraying cold water) is provided.

The spray nozzle 47 is connected to the water supply device 20 through a condensate supply line 48 and a condensate valve 49 to supply condensate.

Therefore, the condensed water sprayed from the upper spray nozzle 47 flows down to the lower side along the inner surface of the condensed duct 43, so that the contact between the hot and humid air rising from the lower part and the condensed water is increased, .

In addition, a discharge port 43a for discharging the condensed water is formed at the lower side of the condensation duct 43 so that the condensed water discharged through the discharge port 43a flows into the drain hose 31 of the drainage device 30. And, inside the lower side of the condensation duct 43 adjacent to the outlet 43a, a temperature sensor 50 for detecting the temperature of the condensed water injected into the condensation duct 43 is installed.

The temperature sensor 50 controls the drying time differently according to the condensate temperature in order to obtain the optimum drying performance and drying efficiency irrespective of the temperature difference of the condensate sprayed in the condensation process. For example, when the temperature of the condensate is low, the condensation is well condensed, and the drying performance is shortened, and when the temperature of the condensate is low, the drying time is shortened. In consideration of this, increase the drying time if the temperature of the condensate is high.

The operation of the washing machine equipped with the drying device is as follows.

When the laundry is put in the rotary drum 12 and the washing machine is operated, the water supply valve 24 of the water supply device 20 opens and water (washing water) passes through the water supply pipe 22 and then the detergent supply device 18. 11) is supplied.

When the water supply operation is completed, the washing heater 16 is operated and the washing water filled in the water tub 11 is heated to a necessary temperature for washing, and then the rotary drum 12 is rotated in the forward or reverse direction by the driving of the motor 13 Washing is performed by the frictional force with the rotary drum 12 and the decomposition force of the detergent.

After the washing is completed, a dehydration stroke is performed by a high speed rotation of the rinsing stroke and the rotating drum 12 which repeats dehydration and water supply.

Subsequently, when the drying heater 44 and the drying fan 41 are operated while the rotating drum 12 is slowly rotated by the operation of the motor 13 when performing the drying stroke, the air inside the rotating drum 12 is operated. After being sucked toward the drying fan 41 through the condensation duct 43, the circulation which is discharged back into the rotating drum 12 through the drying duct 42 is repeated.

At this time, the air of the drying duct 42 is heated by the drying heater 44 and introduced into the rotating drum 12 in a high temperature dry state, and the laundry inside the rotating drum 12 is heated by hot dry air (hot air). The water contained in the laundry evaporates to dryness while being heated.

During the drying operation, the hot dry air absorbs moisture from the wet laundry and is converted into hot and humid air, and is transferred to the condensation duct 43, and the hot and humid air transferred to the condensation duct 43 is injected through the injection nozzle 47. The condensed water (cold water) is injected into the condensation is changed to dry air, and the dry air is heated again in the drying heater 44 to be introduced into the rotating drum 12 to dry the laundry.

2 is a control configuration diagram of a washing machine having a drying apparatus according to the present invention, in addition to the apparatus shown in FIG. 1, the signal input unit 100, the water level sensing unit 110, the drying sensing unit 120, the control unit 130, and the driving unit are shown. And 140.

The signal input unit 100 inputs driving information such as washing course, washing temperature, dehydration RPM, rinsing, etc. selected by the user to the controller 130, and a sole drying course for performing only a drying stroke and a washing stroke. After the completion of dehydration, select and enter the drying course after performing the drying administration.

The water level detection unit 110 detects the water level of the water supplied to the water tank 11, and the dryness detection unit 120 detects the temperature and humidity of the laundry to detect the dry state of the laundry.

The control unit 130 is a microcomputer that controls the washing machine according to the driving information input from the signal input unit 100, and controls the operation of the drying apparatus 40 to dry the laundry when the single drying course or the drying course after the stroke is selected. The drying time is controlled differently according to the condensate temperature sprayed during the drying stroke.

The driving unit 140 according to the drive control signal of the control unit 130, the motor 13, the washing heater 16, the water supply valve 24, the drainage pump 32, the drying fan 41, the drying heater 44 The condensate valve 49 and the like are driven.

Hereinafter, the operation process and the effect of the washing machine and the drying control method configured as described above will be described.

Figure 3 is a flow chart showing a drying control operation procedure in a washing machine equipped with a drying apparatus of the present invention, the drying control method of the present invention is a single drying course that performs only the drying stroke, and drying operation after completion of dehydration in connection with the washing stroke It can be applied to any course that performs a drying administration, such as a continuous drying course after the administration.

When the user selects the sole drying course or the continuous drying course after the stroke to dry the wet laundry (clothing) accommodated in the rotating drum 12, the driving information selected by the user is input to the controller 130 through the signal input unit 100. do.

Therefore, the control unit 130 determines whether the drying operation according to the operation information input from the signal input unit 100 (S200).

If the drying stroke, the control unit 130 operates the condensate valve 49 to inject condensate (cold water) for drying the laundry, the general tap water (cold water) to the injection nozzle 47 through the condensate supply pipe 48 Supplied to start the injection of condensed water into the condensation duct 43 through the injection nozzle 47 (S202).

At this time, the temperature of the condensate water injected into the condensation duct 43 is sensed by the temperature sensor 50 installed in the condensation duct 43 and input to the control unit 130 (S204).

The condensed water injected into the condensation duct 43 is tap water (cold water) used in a general home, and its temperature is changed according to seasons and various environmental factors. For example, it has a temperature distribution of up to 30 ° C in summer and a minimum of 5 ° C in winter, and in some Middle East countries, the temperature of general tap water often exceeds 45 ° C.

In addition, the controller 130 detects the weight of the laundry (clothing) to be dried, that is, the weight of the raisins (S206), and the drying time table for each dry weight shown in FIG. 4 showing the drying time corresponding to the detected dry weight. Search using (S208).

4 is a table set by classifying the required drying time according to the weight of the raisins, for example, when the dry weight is 2 ~ 3kg, the drying time is set to 90 minutes, drying time when the dry weight is 3 ~ 5kg Is set to 120 minutes.

Thereafter, the controller 130 changes the drying time corresponding to the detected condensate temperature by adding or subtracting the drying time retrieved from FIG. 4 by using the acclimation drying time table for each condensate temperature shown in FIG. 5 (S210).

Changing by adding or subtracting the drying time reduces the drying time when the condensate temperature is lower than the reference temperature range (about 15.1-25 ° C.), and drying time when the condensate temperature is higher than the reference temperature range (about 15.1-25 ° C.). To increase the drying time.

5 is a table set by classifying the drying time according to the condensate temperature when the dry weight is 3kg, for example, when the condensate temperature is 0 ~ 15 ℃ the drying time is reduced by -5 minutes, the condensate temperature is 25.1 In the case of ˜35 ° C., the drying time is added to +5 minutes.

This is to change the required drying time according to the condensate temperature in consideration of this point because the condensed water is well condensed to dry well, if the temperature of the condensed water is relatively poor to dry.

Therefore, the control unit 130 operates the motor 13 to perform the drying operation of the laundry with the drying time changed according to the condensate temperature so that the rotating drum 12 rotates slowly, and the drying heater 44 in this state. And by operating the drying fan 41, the air inside the rotating drum 12 is sucked toward the drying fan 41 through the condensation duct 43, and then again inside the rotating drum 12 through the drying duct 42. Repeat the cycle discharged to.

At this time, the air of the drying duct 42 is heated by the drying heater 44 and introduced into the rotating drum 12 in a high temperature dry state, and the laundry inside the rotating drum 12 is heated by hot dry air (hot air). The water contained in the laundry evaporates to dryness while being heated.

When the laundry is dried, the hot dry air absorbs moisture from the wet laundry and is transformed into hot and humid air, and is transferred to the condensation duct 43. The hot and humid air transferred to the condensation duct 43 causes the injection nozzle 47 to flow. As the condensed water (cold water) is injected through the condensation is converted to dry air and again circulated toward the drying heater 44 is heated to repeat the process flowing into the rotating drum 12 to proceed with the drying of the laundry (S212) ).

6 is an experimental data showing the drying time and drying time varying depending on the condensate temperature when the dry weight is 2957.6g (about 3㎏). As the condensate temperature rises, the drying rate decreases and the drying time becomes longer. .

Then, the control unit 130 determines whether the set drying time has elapsed by counting the drying time according to the drying operation of the laundry (S214), and if the drying time has not elapsed, it is fed back to the S212 to continue the drying administration of the laundry. Perform.

As a result of the determination in S214, when the drying time has elapsed, the controller 130 stops the drying operation while stopping the operation of the drying heater 44, the drying fan 41, and the motor 13 (S216).

As described above, according to the washing machine equipped with the drying apparatus and the drying control method according to the present invention, since the optimum drying performance and drying efficiency can be obtained by adjusting the drying time according to the condensate temperature used during the drying stroke. There is an effect that can increase the user's satisfaction.

Claims (14)

In the control method of the washing machine equipped with a drying device to dry the laundry, Detecting the weight of the raisins according to the weight of the laundry; Searching for a drying time corresponding to the sensed dry weight; Sensing the temperature of condensate supplied when the laundry is dried; Changing and setting the searched drying time according to the sensed temperature of the condensed water; And Operating the drying apparatus according to the set drying time to proceed with a drying administration; Drying control method of the washing machine comprising. The method according to claim 1, Detecting the temperature of the condensate, Drying control method of the washing machine, characterized in that for sensing the temperature of the cold water supplied to remove the moisture contained in the laundry. The method according to claim 1, Setting the drying time, The drying time is set shorter as the detected temperature of the condensate is lower, and the drying time is set longer as the temperature of the condensate is higher. delete The method according to claim 1, Changing the drying time is a drying control method of the washing machine, characterized in that to reduce the drying time when the condensate temperature is lower than the reference temperature range, and to increase the drying time when the condensate temperature is higher than the reference temperature. 6. The method of claim 5, Drying control method of the washing machine, characterized in that the reference temperature range is 15.1 ~ 25 ℃. A rotating drum containing laundry to be dried; A drying device for drying the laundry by supplying hot air into the rotating drum; A duct for guiding an air flow path of hot air supplied into the rotating drum; A valve controlling a supply of condensed water when the laundry is dried; A temperature sensor for sensing the temperature of the condensate being supplied; And Controlling the valve to supply condensate to the duct and to set a drying time based on the temperature of the condensate detected by the temperature sensor; A controller for operating a drying apparatus according to a set drying time to perform a drying stroke; Including, The control unit detects the dry weight according to the weight of the laundry to be dried, washing machine, characterized in that for resetting by changing the drying time retrieved according to the detected dry weight according to the condensate temperature. 8. The method of claim 7, The drying apparatus comprises a heater and a fan for generating hot air supplied into the rotary drum. 8. The method of claim 7, The duct is a washing machine, characterized in that the hot air supplied into the rotating drum guides the air, which has been changed at high temperature and humidity by the moisture contained in the laundry toward the drying device. 8. The method of claim 7, The temperature sensor is washing machine, characterized in that for detecting the temperature of the cold water supplied to the duct to remove the moisture contained in the laundry. 8. The method of claim 7, The control unit sets the drying time shorter as the detected temperature of the condensate is lower, and sets the drying time as the temperature of the condensate is higher. delete 8. The method of claim 7, The control unit compares the condensate temperature with a predetermined reference temperature range and reduces the drying time when the condensate temperature is lower than the reference temperature range, and increases the drying time when the condensate temperature is higher than the reference temperature. 14. The method of claim 13, Washing machine, characterized in that the reference temperature range is 15.1 ~ 25 ℃ range.

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