JP2004222762A - Operation controlling method for washing-drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation controlling method for a washing-drying machine which can accurately perform a completion detection even when a plurality of drying action patterns are set when the drying completion is judged with an exhaust air temperature as data, and by which there is no fear for performing a wrong judgement depending on states of apparels. <P>SOLUTION: The washing-drying machine is equipped with a hot air feeding means which feeds hot air into a washing-dehydrating tub from the upper surface side of the washing-dehydrating tub at the time of a drying process. A plurality of action patterns by combinations of a fan blowing, the rotation of the washing-dehydrating tub and the rotation of rotating blades are set for the washing-drying machine at the time of the drying process. In the washing-drying machine, a temperature sensor for detecting the drying completion is provided. The exhaust air temperature is detected by the temperature sensor when the process is switched to the drying process of the last pattern from among a plurality of the action patterns, and the exhaust air temperature is set as a reference temperature. Then, the drying completion is detected when an exhaust air temperature detected after that has risen by a specified value from the reference temperature. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for controlling the operation of a washing / drying machine that can dry laundry after spin-drying in a washing / dewatering tub.
[0002]
[Prior art]
In the drying process after the dehydration process, warm air generated by a heating device and a blower is sent into the washing and dewatering tub, and the washing and dewatering tub and the rotating blades are rotated during the drying process to loosen the laundry. There is a washing dryer to dry.
[0003]
This is, for example, an outer box, an outer tub supported in the outer box, a washing dewatering tub rotatably disposed in the outer tub, having an open upper surface and having a dewatering hole formed in a peripheral wall surface, A rotating blade disposed at an inner bottom of the washing and dewatering tub; and hot air supply means for supplying hot air into the washing and dewatering tub during a drying process. The water is supplied directly from the upper opening of the water tank or from the upper part of the outer tank through the dehydration hole.
[0004]
In the washing / drying machine having such a configuration, the washing operation, the rinsing operation, the dehydration operation, and the washing operation automatically proceed, and after the dehydration operation is completed, the operation proceeds to the drying operation. Wind is generated, and the warm air flows into the washing and dewatering tank. Then, moisture is vaporized by contact with the laundry containing moisture placed on the upper surface of the rotary wing on the inner bottom surface of the washing dehydration tub. The warm air, which contains the laundry and contains moisture, has a high humidity and is guided to the upper part of the washing and dewatering tub, and is exhausted to the outside of the outer case through an exhaust hole from the upper opening.
[0005]
The above operation is performed for a predetermined time to perform a drying process of drying the laundry (for example, see Patent Document 1).
[0006]
[Patent Document 1]
JP 10-216396 A
[Problems to be solved by the invention]
When the timing of the end of the drying process is set to a time when a preset time is up as in the conventional example, it is difficult to cope with a different degree of drying depending on the type of laundry, and the There is a risk of drying out. Therefore, it is conceivable to determine the end of drying by using the exhaust gas temperature from the washing and dewatering tub as data. In this case, in the drying process, for example, an operation pattern such as rotating the washing and dewatering tub or rotating only the rotating blades is used. When a plurality of operation patterns are set, different types of operation patterns have different patterns of changes in the exhaust gas temperature, so that it is difficult to determine the end detection and the accuracy is not good. In addition, since the measured exhaust temperature also varies depending on the state of clothing, etc., it is easy to make an erroneous determination.
[0008]
An object of the present invention is to solve the disadvantages of the conventional example, and to determine the end of drying using exhaust temperature as data. An object of the present invention is to provide a method for controlling the operation of a washing and drying machine that does not have a risk of being erroneously determined depending on a state.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides an outer box, a water tank disposed in the outer box, a washing and dewatering tank rotatably disposed in the water tank, and having a plurality of dewatering holes. Hot air supply means for supplying hot air to the washing and dewatering tub during the drying process from the upper surface side of the washing and dewatering tub, and fan blowing, rotation of the washing and dewatering tub, and rotation of the rotating blades during the drying process. In a washing and drying machine in which a plurality of operation patterns in combination with rotation are set, a temperature sensor for detecting the end of drying is provided, and when a drying process is switched to a last one of the plurality of operation patterns, The exhaust gas temperature is detected by a temperature sensor, and the exhaust gas temperature is set as a reference temperature. When the exhaust gas temperature detected thereafter rises by a certain value from the reference temperature, it is determined that the drying is completed.
[0010]
As a result, the exhaust temperature detected in the drying process of the last pattern is set as the reference temperature at which the drying is determined to be completed. The reference temperature is set as the end determination data, and the end of drying can be accurately determined.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an operation process diagram showing an embodiment of the operation control method of the present invention. FIG. 2 is an overall explanatory view of a washing and drying machine in which the present invention is implemented. A water tank 2 is swingably disposed, and a rotating blade 3 is disposed at the bottom in the water tank 2 and a washing and dewatering tank 4 having a large number of dewatering holes 5 formed in a peripheral wall is provided.
[0012]
In the figure, reference numeral 6 denotes a balancer mounted on the upper part of the washing and dewatering tub 4, and reference numeral 7 denotes a motor for rotating the washing and dewatering tub 4 and the rotary blade 3. Further, a top panel 9 provided with a lid 8 is attached to an upper opening of the outer box 1.
[0013]
In addition to this configuration, a means for drying the clothes in the washing and dewatering tub 4 is provided. As a means for supplying hot air, an intake port 11 provided with a filter 10 is provided on a side portion of the outer box 1, and a duct 14 is provided between the outer box 1 and the water tank 2 in a position downstream of the intake port 11. And a blower fan 12 and a heater 13 as a heating means are sequentially arranged in the duct 14. In the figure, reference numeral 15 denotes a mist nozzle for supplying mist-like water into the washing and dewatering tub 4.
[0014]
As a means for discharging hot air, an inner lid 16 is provided at an upper opening of the water tank 2, and an outlet 18 provided with a filter 17 is formed in the inner lid 16. An exhaust port 19 is provided in the top panel 9 at a position above the discharge port 18.
[0015]
Then, an intake air temperature sensor 20 is provided between the filter 10 and the blower fan 12, and an exhaust air temperature sensor 21 is mounted on the lower surface of the water tank cover 2 a mounted on the upper part of the water tank 2.
[0016]
In such a washer / dryer, a drying step performed after the washing step is divided into a first step and a third step according to different types of drying operation patterns, for example, as shown in the step diagram of FIG. In the case of 4, 5 kg, the first step is an air-blow eco-drying step in which unheated air is blown, and the heater 13 is not energized while rotating the washing and dewatering tub 4, and only the blower fan 12 is operated. Then, air is blown into the washing / dewatering tub 4 to further dehydrate. Next, similarly, with the heater 13 turned off, only the rotor 3 is rotated to scrape off the clothes stuck to the wall surface of the washing and dewatering tub 4.
[0017]
In the second step, while rotating the washing and dewatering tub 4, the heater 13 is energized and warmed air is blown into the washing and dewatering tub 4 by the blower fan 12, and the tub is rotated and dried against the clothing. Do. In this case, the rotation speed of the washing and dewatering tub 4 is initially rotated at a high speed of, for example, 300 rpm for one minute, and the clothes stored in the washing and dewatering tub 4 are spread out. Drill holes in The reason why the high-speed rotation at 300 rpm is set to a short time of 1 minute is that if the time is longer than that, the clothes are squashed outward in the washing and dewatering tub 4.
[0018]
In the next step, the clothes are dried by flat rotation at a low speed of 150 rpm for 14 minutes. Finally, only the rotary wing 3 is rotated seven reciprocations to change the clothes in the washing and dewatering tub 4. This operation is repeated twice.
[0019]
In the subsequent third step, the rotary blade 3 is rotated to perform stirring and drying. The drying operation is performed for a certain period of time while rotating the rotor 3 reciprocally while supplying hot air. After that, the clothes are moved little by little, loosened and the imbalance is adjusted. Finally, the washing and spin-drying tub 4 is rotated at a high speed of 300 rpm for 1 minute to spread the clothes from the center of the washing and spin-drying tub 4 so that the clothes are not entangled. To do. This is repeated until the drying is completed.
[0020]
Finally, the revolving blade 3 is rotated five reciprocations as a finish to loosen and dry the clothes.
[0021]
The present invention detects the temperature of the warm air discharged from the washing and spin-drying tub 4 with the exhaust temperature sensor 21 at the stage when the drying operation pattern shifts from the second step to the third step, and terminates the drying temperature. Is set as a reference temperature for judging. Then, when the exhaust temperature detected thereafter rises by a certain value from the reference temperature, it is determined that the drying is completed.
[0022]
The mode of change in the exhaust gas temperature detected by the exhaust gas temperature sensor 21 at the stage when the process shifts from the second process to the drying process in the third process, which is the last process, differs depending on the operation pattern. That is, when the agitation is performed at the end of the second stroke as in the present embodiment, the clothes are turned upside down, and the wet surface is turned up, the wet surface is evaporated at the beginning of the third stroke. Since the temperature in this state is detected, the first temperature in the third stroke is lower than that in the second stroke.
[0023]
Therefore, the reference temperature for determining the end of drying is not set uniformly high, but is set according to the drying operation pattern, and the exhaust temperature at the time of shifting to the last operation pattern is set as the reference temperature. It is determined that the drying is completed when the exhaust gas temperature of the sample rises by a certain value from the reference temperature.
[0024]
As described above, when the exhaust gas temperature rises by a certain value from the reference temperature set at the beginning of the third stroke, it is determined that the drying has been completed. 3 rotates to stir the clothes. Thereby, clothing can be sufficiently loosened.
[0025]
Further, the reference temperature set based on the exhaust temperature is a reference temperature when the initial measurement value is smaller than a predetermined value for a certain period of time from the start of the third step, which is the drying step of the last operation pattern. Is replaced with a smaller value. Thereby, it is possible to prevent drying with high-temperature warm air, thereby preventing wrinkles and overdrying.
[0026]
Furthermore, by setting the exhaust temperature, which is the data for determining the end of drying, to be data calculated by a moving average, the clothes in the washing and dewatering tub 4 are replaced by the stirring operation, and thus the detected exhaust temperature varies. In this case, all of the temperatures having variations are detected, and the averaged temperature is used as the drying end determination data.
[0027]
Thereby, even if the exhaust gas temperature detected by the condition of the clothes varies, it is possible to accurately determine the end of the drying, and to prevent erroneous determination.
[0028]
【The invention's effect】
As described above, the operation control method for a washer / dryer according to the present invention includes an outer box, a water tank disposed in the outer box, and a number of dewatering holes rotatably disposed in the water tank. A washing and spin-drying tub, and hot air supply means for supplying warm air to the washing and spin-drying tub from the upper surface side of the washing and spin-drying tub during a drying process; In a washing and drying machine in which a plurality of operation patterns are set by a combination of rotation of a water tub and rotation of a rotary wing, a temperature sensor for detecting the end of drying is provided, and drying of a last pattern of the plurality of operation patterns is performed. When the exhaust gas temperature is detected by the temperature sensor when the process is switched to the process, the exhaust gas temperature is set as a reference temperature, and when the exhaust gas temperature detected thereafter rises by a certain value from the reference temperature, it is determined that the drying is completed. , Exhaust temperature Is used as data to determine the end of drying, a plurality of drying operation patterns are set, and even when the manner of temperature change differs depending on the drying operation pattern, the end detection determination can be accurately performed, and there is a risk of erroneous determination depending on the state of clothing. There is no one.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing an operation pattern of a drying process by a washing and drying machine in which an operation control method of the present invention is performed.
FIG. 2 is an explanatory diagram of a washing / drying machine in which the operation control method of the present invention is implemented.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Outer box 2 ... Water tank 2a ... Water tank cover 3 ... Rotor blade 4 ... Washing and dewatering tank 5 ... Dewatering hole 6 ... Balancer 7 ... Motor 8 ... Lid 9 ... Top panel 10 ... Filter 11 ... Intake port 12 ... Ventilation fan 13 ... Heater 14 ... Duct 15 ... Mist nozzle 16 ... Inner lid 17 ... Filter 18 ... Exhaust port 19 ... Exhaust port 20 ... Intake temperature sensor 21 ... Exhaust temperature sensor

Claims (4)

An outer box, a water tank disposed in the outer box, a washing and dewatering tank rotatably disposed in the water tank, and having a plurality of dewatering holes; and A hot air supply means for supplying hot air in the drying step in the drying step, and a plurality of operation patterns by a combination of fan blowing, rotation of the washing and dewatering tank, and rotation of the rotating blades in the drying step. In the set washing / drying machine, a temperature sensor for detecting the end of drying is provided, and when the operation mode is switched to the drying process of the last pattern of the plurality of operation patterns, the exhaust temperature is detected by the temperature sensor. An operation control method for a washing and drying machine, comprising setting an exhaust temperature as a reference temperature, and determining that the drying is completed when the exhaust temperature detected thereafter rises by a certain value from the reference temperature. 2. The operation control method for a washer / dryer according to claim 1, wherein the operation is continued for a specified time after the determination of the end of the drying. The reference temperature to be set, for a certain period of time from the start of the drying process of the last pattern, when the initial measurement value is smaller than a predetermined value, the reference predetermined value is replaced with a smaller value. The washing and drying machine according to claim 2. The washing / drying machine according to any one of claims 1 to 3, wherein the exhaust temperature, which is the data for determining the end of drying, is data calculated by a moving average.

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