JP3840748B2 - Clothes dryer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a clothes dryer that supplies hot air to clothes in a rotating drum and dries them.
[0002]
[Prior art]
Conventionally, this type of clothes dryer is configured as shown in FIG. Hereinafter, the configuration will be described.
[0003]
As shown in the figure, the dryer main body 1 has a rotary drum 2 rotatably disposed therein, and is provided with hollow resin-made clothes stirring projections 3 at three locations on the inner surface of the rotary drum 2. Reference numeral 4 denotes clothes that are put into the rotary drum 2 by an operator and dried. A charging port 5 is provided on the front surface of the dryer body 1, and the rotary drum 2 and the heat exchange fan 7 (air blowing means) are driven to rotate by the motor 6. Reference numeral 8 denotes a PTC heater (heating means).
[0004]
An exhaust port 9 for exhausting dry air from the rotary drum 2 is provided at the center of the rear surface of the rotary drum 2, and a thermistor (temperature detection means) 10 for detecting the exhaust temperature is provided in the vicinity thereof. Three inlets 11 for introducing dry air into the three clothes stirring projections 3 are provided on the outer periphery of the rear surface of the rotary drum 2. The dry air heat-exchanged by the heat exchange fan 7 is heated again by the PTC heater 8 and sent out into a donut-shaped dry air path surrounding the three inlets 11 on the rear surface of the rotary drum 2, It passes through the inside and is blown out into the rotary drum 2 from the hot air outlet 3a.
[0005]
In the above configuration, the operation will be described. When the user puts the clothes 4 to be dried into the rotary drum 2 and starts drying, the motor 6 rotates and the rotary drum 2 and the heat exchange fan 7 rotate via the belt. To do. The high-humidity air deprived of moisture from the clothes 4 in the rotary drum 2 is heat-exchanged by the heat exchange fan 7 and dehumidified, and then heated by the PTC heater 8 and passes through the clothes stirring projections 3 to blow hot air. It enters into the rotary drum 2 as dry high-temperature air from the outlet 3a, and deprives moisture of the clothes 4 again. As a result of repeating the above continuously, the clothes 4 are dried.
[0006]
FIG. 6 shows the relationship between the operation time and the exhaust temperature from the rotary drum 2. As shown in FIG. 6, the exhaust temperature starts to rise from the stable state during the drying operation to before the end of drying because the moisture contained in the clothing 4 has decreased. The control means 12 controls the speed of the motor 6 and the energization to the PTC heater 8 from the detection temperature of the thermistor 10 that detects the exhaust temperature from the rotary drum 2 for the purpose of preventing thermal damage to the clothing 4. In the vicinity of a preset temperature. Generally, the set temperature is set to around 70 ° C.
[0007]
Moreover, after the drying end is detected by the control means 12 (A minutes from the start of operation), the PTC heater 8 is turned off to perform the air blowing operation, and after the temperature of the garment 4 is lowered, the operation is ended (B minutes from the start of operation). And Generally, the temperature is lowered to about 50 ° C. This is because when the clothes after the drying operation are left at a high temperature, the cooking oil that cannot be removed by washing and adheres to the clothes may be oxidized to cause spontaneous ignition.
[0008]
In addition, when the clothes 4 wrinkled by dehydration in the washing process are put into the rotary drum 2 after the washing is finished and are operated for several minutes, the clothes 4 will not dry, but the wrinkles may be removed by dehydration of the washing machine. it can. This is because the high-temperature and high-humidity fiber is more slippery than the normal-temperature and normal-humidity state, and the wrinkles formed by the displacement between the fibers are caused by the mechanical force from the clothes stirring protrusion 3 of the rotating drum 2. By returning to a stable state.
[0009]
[Problems to be solved by the invention]
However, in the conventional configuration, the set temperature for adjusting the exhaust temperature discharged from the rotary drum 2 is the same even though the purpose of the course for removing the wrinkles of the clothes is different from that of the normal clothes drying course. Even in the course of removing wrinkles, after the hot air operation in which the PTC heater 8 is energized for operation, the air blowing operation for cooling the clothing is performed, and there is a problem that unnecessary energy and time are required.
[0010]
SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and aims to shorten the operation time by omitting the air blowing operation before the end of the operation in the course for removing wrinkles of clothes.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present invention rotates a rotating drum for drying clothing by a motor, blows warm air heated by a heating means into the rotating drum, and detects the exhaust temperature of the rotating drum by a temperature detecting means. The timer measures the time, and the control means controls the heating means and the motor to control the temperature in the rotating drum, and has a normal clothes drying course and a course for wrinkling the clothes. In the course to take, the heating means is controlled to control the temperature inside the rotating drum to be lower than the temperature inside the rotating drum in the normal clothing drying course, and the motor is driven to rotate by the motor. after, if the garment with wrinkle by dehydration with enough wash濯行ends the first operating after a predetermined time has elapsed which is previously set to not reach so the drying together , Notified by the notification means, then, as to turn off the power supply to the heating means, which is constituted of the second predetermined time only intermittently rotating drum which is set in advance so as to rotate.
[0012]
As a result, even if edible oil that may cause spontaneous ignition adheres to the clothing, it is possible to remove wrinkles of the clothing at a low temperature that does not cause spontaneous ignition. The operation time can be shortened.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, there is provided a rotating drum that dries clothing, a heating unit that heats warm air blown into the rotating drum, a motor that rotationally drives the rotating drum, and the rotating drum. A temperature detection means for detecting the exhaust temperature, a timer for measuring time, a notification means for performing a notification operation such as a buzzer, and a control means for controlling the temperature in the rotating drum by controlling the heating means and the motor, The control means includes a normal clothing drying course and a garment wrinkle removal course. In the garment wrinkle removal course, the heating means is controlled to control the temperature in the rotating drum. with controlled to be lower than said rotary drum temperature temperature in clothes drying course, the rotary drum is rotated by the motor, after the start of the operation, leaving at about washing濯行Together garment with wrinkle finishes the operation after the first predetermined time that is set in advance does not reach so the dried, notified by the notification means, then, while turning off the power supply to the heating means The rotary drum is configured to intermittently rotate for a preset second predetermined time , and the temperature of the clothing during operation can be wrinkled in a low temperature range without the risk of spontaneous ignition. Therefore, it is possible to omit the blowing operation before the end of the operation, shorten the operation time, and the user can easily estimate the operation end time. It is possible to prevent the clothes from being misplaced and new wrinkles from occurring in the clothes. In addition, after the wrinkle removal course, it is possible to drive the notification means such as a buzzer to prompt the user to take out the clothes, and even if the operation is finished, the clothes are left in the rotating drum and new wrinkles are generated in the clothes. Can be prevented. Furthermore, even if the user forgets to put the clothes in the rotating drum even after the driving is finished, the clothes are applied by applying mechanical force to the clothes by intermittent rotation of the rotating drum and changing the clothing leaving form. In addition, it is possible to suppress the occurrence of new wrinkles and to save energy.
[0014]
【Example】
Embodiments of the present invention will be described below with reference to the drawings. In addition, the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description. The configuration of the clothes dryer is the same as the conventional example.
[0015]
Example 1
As shown in FIG. 1, the control means 13 includes relay contacts 15a, 15b for controlling energization to a control circuit 14 having a microcomputer as a main control means and heaters 8a, 8b constituting a PTC heater (heating means) 8. The relay 15 includes a semiconductor switching unit 16 that controls the motor 6, an operation setting display unit 17 that sets an operation program and displays setting contents or an operation state, and a notification unit 18 such as a buzzer. .
[0016]
The rotation detection unit 19 includes magnets 19 a and 19 a ′ attached to the rotary drum 2 and a proximity sensor (reed switch) 19 b, and inputs a rotation detection signal to the control unit 138. The number of rotations can be detected from the pulse period of the rotation detection signal. An AC voltage is applied from the AC power source 20 to the PTC heater 8 and the motor 6 through a power switch 21 that can be controlled to be shut off.
[0017]
The control means 8 detects the drying control function for controlling the operation time by detecting the drying degree of the clothes in the rotary drum 2 from the temperature and temperature change detected by the thermistor (temperature detection means) 10 and the temperature detection means 10. The temperature control function for adjusting the temperature by controlling the PTC heater 8 on and off by the relay 15 so that the exhaust gas temperature is lower than the set value, the semiconductor switching means 16 for controlling the rotation of the motor 6, and the rotation detecting means 19 A rotation control function for controlling the number of rotations of the rotary drum 2 based on the rotation signal, both of which are executed by a microcomputer program.
[0018]
The operation setting display means 17 is configured as shown in FIG. 2, and can set either a normal clothes drying course or a wrinkle removing course for removing wrinkles of clothes. In addition, normal clothing drying courses such as thick clothing courses and shirt courses can be set, and the wrinkle setting course 23 can be set using the wrinkle setting key 23. Reference numerals 24a, 24b, and 24c are indicator lamps for standard course driving, heavy clothing course driving, and shirt course driving, and 25 is a wrinkle driving indicator lamp. Reference numeral 26 denotes a start / pause key.
[0019]
When the wrinkle removal setting key 23 is used to set the wrinkle removal course, the control means 13 sets the temperature inside the rotary drum 2 to a temperature (eg, 50 ° C.) lower than the temperature inside the rotary drum 2 (eg, 70 ° C.) in the normal clothing drying course. ), And after the start of operation, a timer (not shown) is configured to end the operation after a preset time (for example, 10 minutes), and the notification means 18 notifies the end of the operation. ing.
[0020]
The operation when the wrinkle course is set in the above configuration will be described. When the user puts clothes to remove wrinkles into the rotary drum 2 and sets a wrinkle removal course with the wrinkle removal setting key 23, when the start / pause key 26 is pressed to start the operation, the motor 6 rotates and passes through the belt. As the rotary drum 2 and the heat exchange fan 7 rotate, the PTC heater 8 is energized, the temperature of the circulating air and clothing rises, and the rotary drum exhaust temperature rises accordingly, as shown in FIG.
[0021]
When the temperature in the rotary drum 2 reaches a preset temperature, the control means 13 turns off the power to the PTC heater 8 and then turns on and off the power to the PTC heater 8 to repeat the rotation of the rotary drum 2. The temperature inside is controlled to the set temperature. When a preset time (10 minutes) elapses, the control means 13 turns off all energization, notifies the notifying means 18 and ends the operation.
[0022]
The set temperature is set to 50 ° C., which is set lower than 70 ° C., which is the set temperature for a normal clothing drying course, and the clothing is kept at around 50 ° C., so there is no risk of spontaneous ignition in the clothing. You can The set temperature in the normal clothes drying course is set as a temperature suitable for shortening the drying time without causing thermal damage to the clothes.
[0023]
In general, in the wrinkle removal course for removing wrinkles of clothes, the clothes put into the rotary drum 2 are wet after washing and dehydration, and there is little risk of spontaneous ignition. Since there is a possibility of drying during the wrinkle removal operation, it is necessary to take measures against spontaneous ignition.
[0024]
Further, since the control means 13 finishes the operation within 10 minutes from the start of the operation, the user can easily predict the operation end time, and further, the notification means 18 informs at the end of the operation. It is possible to prevent the clothes from being misplaced in the rotary drum 2 in spite of the completion and the form to be fixed, thereby causing a new wrinkle in the clothes.
[0025]
The time required to remove wrinkles of clothing varies depending on the ambient temperature, the amount of clothing, etc., but the factors that greatly affect the time are the material of the clothing and the strength of the wrinkles. Since it is difficult to determine the strength of all clothing materials and wrinkles, considering the workability of the worker, the end time can be easily predicted (10 minutes) to improve usability. be able to. In addition, if the amount of clothes to be put in is appropriate with respect to the internal volume of the rotary drum 2, it is possible to remove an approximate wrinkle in an operation time of 10 minutes.
[0026]
In this embodiment, when a wrinkle setting course 23 is set by the wrinkle setting key 23, the operation is terminated after a time (10 minutes) preset by a timer has elapsed. The user may be able to select the time.
[0027]
(Example 2)
The control means 13 in FIG. 1 is configured to rotate the rotating drum 2 intermittently for a preset time after the operation is finished in the course for taking wrinkles of clothes, and finishes the operation of the course for taking wrinkles of clothes. When the rotary drum 2 is intermittently rotated and stopped, the notification means 18 notifies the user. Here, the intermittent operation of the rotating drum 2 is stopped for 1 minute 50 seconds and operated for 10 seconds. Other configurations are the same as those of the first embodiment.
[0028]
The operation when the wrinkle course is set in the above configuration will be described. When the user puts clothes to wrinkle into the rotary drum 2, sets a wrinkle removal course with the wrinkle removal setting key 23, and starts operation by pressing the start / pause key 26, as shown in FIG. And the rotating drum 2 and the heat exchanging fan 7 are rotated via the belt, and the PTC heater 8 is energized to increase the temperature of the circulating air and clothing, and accordingly the exhaust temperature of the rotating drum also increases. In FIG. 4, the shaded portion indicates the energized state.
[0029]
When the temperature in the rotary drum 2 reaches a preset temperature, the control means 13 turns off the power to the PTC heater 8 and then turns on and off the power to the PTC heater 8 to repeat the rotation of the rotary drum 2. The temperature inside is controlled to the set temperature. When a preset time (10 minutes) elapses, the control means 13 turns off all energization, notifies the notifying means 18 and ends the operation.
[0030]
Even after the operation is completed, the motor 6 is energized intermittently, the heat exchange fan 7 and the rotating drum 2 are rotated, and the user forgets to put the clothes in the rotating drum 2 even though the operation is completed. By applying mechanical force to the garment with the intermittent rotation of the rotating drum 2 and changing the leaving form of the garment, it is possible to suppress the occurrence of new wrinkles on the garment, and the rotating drum 2 is intermittently rotated and stopped. Sometimes, notification by the notification means 18 can prompt the user to take out the clothes.
[0031]
In addition, during the intermittent operation, the display by the wrinkle operation indicator lamp 25 is changed from that during the operation so that the user can know that the operation is completed. Furthermore, from the viewpoint of energy saving, the PTC heater 8 is not energized during intermittent operation.
[0032]
【The invention's effect】
As described above, according to the first aspect of the present invention, the rotating drum that dries clothing, the heating means that heats the warm air blown into the rotating drum, and the motor that rotationally drives the rotating drum. A temperature detecting means for detecting the exhaust temperature of the rotating drum; a timer for measuring time ; a notifying means for performing a notifying operation such as a buzzer; and the heating means and the motor to control the temperature in the rotating drum. Control means, and the control means has a normal clothes drying course and a course for removing wrinkles of the clothes, and the rotating drum is controlled by controlling the heating means in the course of removing wrinkles of the clothes. The inside temperature is controlled to be lower than the inside temperature of the rotating drum in the normal clothes drying course, and the rotating drum is rotationally driven by the motor to start operation. , With ends the operation to the first after the predetermined period of time in which the garment with wrinkle by dehydration at about wash濯行set in advance does not reach so drying, notified by the notification unit, then to the heating means Since the rotary drum is rotated intermittently for a preset second predetermined time , the clothing temperature during operation is reduced in a low temperature range where there is no risk of spontaneous ignition. Therefore, it is possible to omit the air blowing operation before the end of operation, shorten the operation time, and the user can easily estimate the operation end time. Regardless, it is possible to prevent the clothes from being misplaced in the rotating drum and causing new wrinkles in the clothes. In addition, after the wrinkle removal course, it is possible to drive the notification means such as a buzzer to prompt the user to take out the clothes, and even if the operation is finished, the clothes are left in the rotating drum and new wrinkles are generated in the clothes. Can be prevented. Furthermore, even if the user forgets to put the clothes in the rotating drum even after the driving is finished, the clothes are applied by applying mechanical force to the clothes by intermittent rotation of the rotating drum and changing the clothing leaving form. In addition, it is possible to suppress the occurrence of new wrinkles and to save energy.
[Brief description of the drawings]
FIG. 1 is a block circuit diagram of a clothes dryer according to a first embodiment of the present invention. FIG. 2 is a front view of an operation display unit of the clothes dryer. FIG. 4 is an operation pattern diagram of a clothes dryer according to a second embodiment of the present invention. FIG. 5 is a sectional view of a conventional clothes dryer. FIG. 6 is a rotating drum of a conventional clothes dryer. Time chart showing the relationship between exhaust temperature and time 【Explanation of symbols】
2 Rotating drum 6 Motor 8 PTC heater (heating means)
10 Thermistor (temperature detection means)
13 Control means

Claims (1)

A rotating drum that dries clothing; a heating unit that heats warm air blown into the rotating drum; a motor that rotates the rotating drum; a temperature detecting unit that detects an exhaust temperature of the rotating drum; A timer for timing , a notification means for performing a notification operation such as a buzzer, and a control means for controlling the temperature in the rotating drum by controlling the heating means and the motor, and the control means includes a normal clothing drying course, A course for removing wrinkles of clothes, and in the course of removing wrinkles of clothes, the temperature in the rotating drum is controlled to be lower than the temperature in the rotating drum in the normal clothes drying course by controlling the heating means. controls so as to, the rotary drum is rotated by the motor, after the start of operation, the clothes drying marked with wrinkles by dehydration at about washing濯行First with ends the operation after a predetermined period of time which is set in advance so as not al, notified by the notification means, then, while turning off the power supply to the heating means, a second predetermined set in advance A clothes dryer configured to rotate the rotating drum intermittently for a period of time .

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