JP2003111999A - Clothes dryer - Google Patents

Abstract

(57) [Summary] [PROBLEMS] In a clothes dryer for drying clothes by supplying hot air into a rotating drum, it is determined that the rotating drum has stopped due to a failure, and the clothes at the end of operation are appropriately removed. Cool to temperature. SOLUTION: Hot air heated by a heater 12 is supplied by a blower fan into a rotating drum for storing and drying clothes, and an exhaust temperature from the rotating drum is measured by a temperature sensor 13.
The rotation number of the rotating drum is detected by the drum rotation detecting means 20, and the temperature sensor 1 is detected by the control means 24.
3 and the motor 8 based on the information of the drum rotation detecting means 20.
And the operation of the heater 12 is controlled. The control means 24 performs a cooling stroke immediately before the end of the operation until the temperature detected by the temperature sensor 13 becomes equal to or lower than a predetermined value, and when the rotation speed detected by the drum rotation detection means 20 is lower than the predetermined value, It is configured to set a longer cooling stroke time regardless of the information of the sensor 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clothes dryer for supplying hot air into a rotary drum to dry clothes.

[0002]

2. Description of the Related Art Conventionally, in a clothes dryer, in order to lower the surface temperature of clothes at the end of operation, the heat source is stopped immediately before the end of operation and only the drive source is operated until the exhaust temperature falls below a predetermined value. It was configured to have a process.

[0003]

In such a conventional clothes dryer, assuming that the rotary drum or the blower fan is stopped due to a failure, the clothes dryer will be operated when the exhaust temperature becomes lower than a predetermined value. There was a problem that the surface temperature was not lowered sufficiently.

The present invention is intended to solve the above-mentioned conventional problems, and it is an object of the present invention to identify that the rotating drum or the blower fan is stopped due to a failure and cool the clothes to a proper temperature at the end of the operation. There is.

A second object of the present invention is to identify and inform that one of the rotating drum, the blower fan and the motor is out of order.

[0006]

In order to achieve the above first object, the present invention supplies hot air heated by a heat source by a blower fan into a rotary drum for storing and drying clothes, and the rotary drum supplies the hot air. The exhaust temperature of the fan is detected by the temperature detecting means, the rotation speed of the rotating drum is detected by the drum rotation detecting means, the rotation speed of the blower fan is detected by the fan rotation detecting means, and the temperature detecting means and the drum rotation detecting means by the control means. It is configured to control the operation of the motor and the heat source based on the information of the above, and the control means performs the cooling process immediately before the end of operation until the temperature detected by the temperature detection means falls below a predetermined value, and the drum rotation detection means or the fan rotation. When the rotation speed detected by the detection means is lower than the predetermined value,
It is configured to set a longer cooling stroke time regardless of the information of the temperature detecting means.

This makes it possible to identify that the rotary drum or the blower fan has stopped due to a failure, and cool the temperature of the clothes at the end of the operation to an appropriate temperature.

Further, in order to achieve the second object, hot air heated by a heat source is supplied by a blower fan into the rotary drum for storing and drying clothes, and the rotation speed of the rotary drum is detected by the drum rotation detecting means. The rotation number of the blower fan is detected by the fan rotation detecting means, the control means controls the operation of the motor and the heat source by the information of the drum rotation detecting means and the fan rotation detecting means, and the operating state is notified by the notifying means. According to the information from the drum rotation detecting means and the fan rotation detecting means, the control means is configured to identify the stop of the rotating drum, the stop of the blower fan, and the stop of the motor, and to notify by the notifying means. is there.

This makes it possible to specify and inform which of the rotary drum, the blower fan, and the motor is out of order.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention includes a motor as a drive source, a rotary drum for storing and drying clothes, and hot air heated by a heat source in the rotary drum. Blower fan, temperature detecting means for detecting exhaust temperature from the rotating drum, drum rotation detecting means for detecting the number of rotations of the rotating drum, and the motor based on the information of the temperature detecting means and the drum rotation detecting means. And a control means for controlling the operation of the heat source, wherein the control means performs a cooling process immediately before the end of the operation until the temperature detected by the temperature detection means becomes a predetermined value or less,
When the number of rotations detected by the drum rotation detecting means is lower than a predetermined value, a long cooling stroke time is set regardless of the information of the temperature detecting means, and the rotating drum fails. The clothing can be cooled to an appropriate temperature at the end of the operation by identifying that it is stopped.

According to a second aspect of the present invention, a motor as a drive source, a rotary drum for storing and drying clothes, a blower fan for supplying hot air heated by a heat source into the rotary drum, and the rotary drum. Temperature detection means for detecting the exhaust gas temperature from the fan, fan rotation detection means for detecting the rotation speed of the blower fan, and the operation of the motor and the heat source by the information of the temperature detection means and the fan rotation detection means. The control means performs a cooling process immediately before the end of the operation until the temperature detected by the temperature detection means becomes a predetermined value or less, and the rotation speed detected by the fan rotation detection means has a predetermined value. Is lower than
It is configured to set a longer cooling stroke time without depending on the information of the temperature detection means, and identifies that the blower fan is stopped due to a failure, and the clothing at an appropriate temperature at the end of operation. Can be cooled down.

According to a third aspect of the present invention, in the above-mentioned first or second aspect of the invention, control means for controlling the operation of the motor and the heat source by the information of the temperature detecting means, the drum rotation detecting means and the fan rotation detecting means. The control means performs a cooling process immediately before the end of the operation until the temperature detected by the temperature detection means becomes equal to or lower than a predetermined value, and the rotation speed detected by the drum rotation detection means is lower than a predetermined value. When the rotation speed detected by the fan rotation detection means is lower than a predetermined value, a longer cooling stroke time is set regardless of the information of the temperature detection means. It is possible to identify that the clothes are stopped due to a failure and cool the clothes at the end of the operation to an appropriate temperature.

According to a fourth aspect of the present invention, in the above-mentioned first or second aspect of the present invention, control means for controlling the operation of the motor and the heat source by the information of the temperature detecting means, the drum rotation detecting means and the fan rotation detecting means. The control means performs a cooling process immediately before the end of the operation until the temperature detected by the temperature detection means becomes equal to or lower than a predetermined value, and the rotation speed detected by the drum rotation detection means is lower than a predetermined value. Further, when the rotation speed detected by the fan rotation detection means is lower than a predetermined value, the operation is terminated without performing the cooling stroke regardless of the information of the temperature detection means. The operation can be terminated by identifying that the motor is stopped due to a failure.

According to a fifth aspect of the present invention, a motor as a drive source, a rotary drum for storing and drying clothes, a blower fan for supplying hot air heated by a heat source into the rotary drum, and the rotary drum. Drum rotation detection means for detecting the rotation speed of the blower fan, fan rotation detection means for detecting the rotation speed of the blower fan, and the operation of the motor and the heat source by the information of the drum rotation detection means and the fan rotation detection means. Control means for controlling, and an informing means for informing the operating state, the control means, by the information from the drum rotation detection means and the fan rotation detection means, stop of the rotating drum, stop of the blower fan, It is configured such that the stop of the motor is identified and notified by a notification means, and any one of the rotating drum, the blower fan, and the motor is out of order. It is possible to notify either the specific to the.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) As shown in FIG.
The rotary drum 2 is supported by a drum support plate 3 provided in the front opening, and the rear part of the rotary drum 2 is rotatably supported by a fan case 5 via a shaft 4. A filter 6 and a filter cover 7 are attached to the inner wall of the rotary drum 2 so that lint coming out of clothes is not discharged to the outside of the machine. The motor 8 is connected by a fan belt 9 to a blower fan 10 provided in the fan case 5, and blows hot air into the rotary drum 2 to dry the clothes.

Further, in order to stir the clothes in the rotary drum 2, the rotary drum 2 is rotated via the drum belt 11 connected to the motor 8. The heater (heat source) 12 heats the hot air supplied into the rotary drum 2. Arrow A indicates the flow of wind. The temperature sensor (temperature detection means) 13 has an exhaust temperature T
It detects H.

The electrode 14 is attached to the drum support plate 3,
The clothes put into the rotating drum 2 are brought into contact with the clothes. The electrode 14 is composed of two conductive members 15 and an insulating member 16 as shown in FIG. 3, and is input to the dryness detecting means 17 as shown in FIG. The dryness detecting means 17 is configured to detect the dryness of the clothes by detecting the resistance value R between the conductive members 15.

The magnet 18 is attached to the rotary drum 2, and the drum rotation detection switch 1 which is a magnetic proximity switch.
The open / close signal of 9 is inputted to the drum rotation detecting means 20 as shown in FIG. The drum rotation detection means 20 detects the open / close signal of the drum rotation detection switch 19 to detect the rotation of the rotary drum 2.
Is configured to detect the rotation speed Nd.

The magnet 21 is attached to the blower fan 10, and the fan rotation detection switch 2 which is a magnetic proximity switch.
The opening / closing signal of No. 2 is input to the fan rotation detection means 23 (see FIG. 6). The fan rotation detection means 23 is configured to detect the rotation speed Nf of the blower fan 10 from the open / close signal of the fan rotation detection switch 22.

The control means 24 comprises a microcomputer or the like, and as shown in FIG. 1, the dryness detection means 1
7. Based on the information from the temperature sensor 13 and the drum rotation detection means 20, the motor 8 and the heater 12 are controlled, and the cooling stroke immediately before the end of the operation is performed until the temperature detected by the temperature sensor 13 becomes a predetermined value or less, and the drum When the rotation speed detected by the rotation detection means 20 is lower than a predetermined value, a longer cooling stroke time is set regardless of the information of the temperature sensor 13.

The operation of the above structure will be described with reference to FIGS. 4 and 5. When the rotation speed Nd of the rotary drum 2 detected by the drum rotation detecting means 20 is higher than the predetermined value Nd1, as shown in FIG. 4, the resistance value R between the conductive members 15 per unit time is lower than the predetermined value RS. From the time t12 when the number of times Rk of reduction has become smaller than the set value R1 continuously for the predetermined time T11, the set predetermined time T13
At time t14 when the heater 12 has elapsed, the heater 12 is turned off to shift to the cooling process. At time t15 when the exhaust gas temperature TH detected by the temperature sensor 13 becomes lower than the predetermined temperature TH1, the motor 8 is turned off to end the operation.

Next, as shown in FIG. 5, when the drum rotation detection means 20 detects that the rotation speed Nd of the rotating drum 2 is lower than a predetermined value Nd1 at the time t16 during operation, the heater 12 is turned on. Turn off and shift to the cooling process,
At a time t18 after the elapse of a predetermined time T17, the motor 8 is turned off to end the operation. At this time, the exhaust gas temperature TH detected by the temperature sensor 13 is lower than the predetermined temperature TH1 before time t18, but is set to be ignored.

That is, when the rotation of the rotary drum 2 is normal, there is a correlation between the exhaust temperature TH and the actual clothing temperature. Therefore, the cooling process is performed until the exhaust temperature TH becomes lower than the predetermined temperature TH1. With this, the clothes can be cooled appropriately.

On the other hand, when the rotary drum 2 is stopped for some reason (for example, the drum belt 11 is cut), if the heater 12 is turned off, the exhaust temperature TH is likely to drop, but the clothes are not agitated. Clothes temperature does not easily drop. Therefore, when the exhaust temperature TH becomes lower than the predetermined temperature TH1, the clothing temperature is not yet sufficiently lowered. Therefore, the time T17 necessary for the clothing to be appropriately cooled when the rotating drum 2 is stopped is set. is doing.

As described above, according to this embodiment, it is determined that the rotary drum 2 is stopped due to a failure, and the cooling process is not performed until the exhaust temperature TH becomes lower than the predetermined temperature TH1, but the predetermined process is performed. By performing the time T17 only, the clothes at the end of the operation can be cooled to an appropriate temperature.

In this embodiment, the heater 1 is used as the heat source.
However, a gas burner or a hot water heat exchanger may be provided.

(Embodiment 2) As shown in FIG. 6, the control means 24a is constituted by a microcomputer and the like, and the motor 8 is controlled by information from the dryness detection means 17, the temperature sensor 13 and the fan rotation speed detection means 23. And the heater 12 is controlled to perform a cooling process immediately before the end of the operation until the temperature detected by the temperature sensor 13 becomes a predetermined value or less,
When the rotation speed detected by the fan rotation detection means 23 is lower than a predetermined value, a longer cooling stroke time is set regardless of the information of the temperature sensor 13. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. Similar to the first embodiment, as shown in FIG. 7, when the rotation speed Nf of the blower fan 10 detected by the fan rotation detecting means 23 is higher than a predetermined value Nf1, the resistance between the conductive members 15 per unit time. The heater 12 is turned off at the time t14 when the set predetermined time T13 has elapsed from the time t12 when the number Rk of the values R becomes smaller than the predetermined value Rs continuously becomes smaller than the set value R1 for the predetermined time T11. Then, the cooling process is started. Exhaust temperature T detected by the temperature sensor 13
At time t15 when H becomes lower than the predetermined temperature TH1, the motor 8 is turned off to end the operation.

Next, as shown in FIG. 8, when the fan rotation detecting means 23 detects that the rotation speed Nf of the blower fan 10 is lower than a predetermined value Nf1 at time t26 during operation, the heater 12 is turned on. After the predetermined time T27 has elapsed, the motor 8 is turned off at time t28 to end the operation. At this time, the exhaust gas temperature TH detected by the temperature sensor 13 is lower than the predetermined temperature TH1 before time t28, but is set to be ignored.

That is, when the rotation of the blower fan 10 is normal, there is a correlation between the exhaust temperature TH and the actual clothing temperature. Therefore, the cooling process is performed until the exhaust temperature TH becomes lower than the predetermined temperature TH1. With this, the clothes can be cooled appropriately.

On the other hand, when the blower fan 10 is stopped for some reason (for example, the fan belt 9 is cut), if the heater 12 is turned off, the exhaust temperature TH is likely to drop, but since the blower is not blown, the actual clothing temperature is not reached. Is hard to fall. Therefore, when the exhaust temperature TH becomes lower than the predetermined temperature TH1, the clothing temperature is not yet sufficiently lowered. Therefore, the time T27 necessary for the clothing to be appropriately cooled when the blower fan 10 is stopped is set. is doing.

As described above, according to this embodiment, it is determined that the blower fan 10 is stopped due to a failure, and the cooling process is not performed until the exhaust temperature TH becomes lower than the predetermined temperature TH1, but a predetermined cooling stroke is performed. By performing only the time T27, the clothes at the end of the operation can be cooled to an appropriate temperature.

(Embodiment 3) As shown in FIG. 9, the control means 24b is composed of a microcomputer or the like, and comprises a dryness detection means 17, a temperature sensor 13, a drum rotation detection means 20 and a fan rotation speed detection means 23. The motor 8 and the heater 12 are controlled by the information of the temperature sensor 1
The cooling process immediately before the end of the operation was performed until the temperature detected from No. 3 was below a predetermined value, the rotation speed detected by the drum rotation detection means 20 was lower than the predetermined value, and it was detected by the fan rotation detection means 23. When the rotation speed is lower than a predetermined value, a longer cooling stroke time is set regardless of the information from the temperature sensor 13. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. As in the first embodiment, as shown in FIG. 10, the rotation speed Nd of the rotary drum 2 detected by the drum rotation detection means 20 is higher than a predetermined value Nd1, and the rotation of the blower fan 10 detected by the fan rotation detection means 23. When the number Nf is higher than the predetermined value Nf1, the number Rk of times when the resistance value R between the conductive members 15 becomes smaller than the predetermined value RS per unit time is the predetermined time T.
Time t1 at which the value continuously becomes smaller than the set value R1 during 11
From 2, the heater 12 is turned off at time t14 when the set predetermined time T13 has elapsed, and the process proceeds to the cooling process. The exhaust gas temperature TH detected by the temperature sensor 13 is equal to the predetermined temperature TH.
At time t15 when it becomes lower than 1, the motor 8 is turned off to end the operation.

Next, as shown in FIG. 11, at the time t36 during operation, the drum rotation detecting means 20 detects that the rotation speed Nd of the rotating drum 2 is lower than a predetermined value Nd1, and the fan rotation is detected. When it is detected by the means 23 that the rotation speed Nf of the blower fan 10 is lower than the predetermined value Nf1, the heater 12 is turned off to shift to the cooling stroke,
At the time t38 after the elapse of the predetermined time T37, the motor 8 is turned off to end the operation. At this time, the exhaust gas temperature TH detected by the temperature sensor 13 is lower than the predetermined temperature TH1 before time t38, but is set to be ignored.

That is, when the rotation of the motor 8 is normal and the rotation of the rotary drum 2 and the blower fan 10 is normal, the exhaust temperature TH has a correlation with the actual clothing temperature, so the exhaust temperature TH is predetermined. By performing the cooling process until the temperature becomes lower than the temperature TH1, the clothes can be cooled appropriately.

On the other hand, when the motor 8 is stopped for some reason (for example, the operation of the overload protection device),
When the heater 12 is turned off, the exhaust temperature TH is likely to drop, but the clothes are not stirred and the air is not blown, so the actual clothes temperature is hard to drop. Therefore, when the exhaust temperature TH becomes lower than the predetermined temperature TH1, the clothing temperature is not yet sufficiently lowered, so that the clothing is appropriately cooled when the rotating drum 2 and the blower fan 10 are stopped by stopping the motor 8. The time T37 required for this is set.

As described above, according to this embodiment, it is identified that the motor 8 is stopped due to a failure, and the exhaust temperature TH
By not performing the cooling process until the temperature becomes lower than the predetermined temperature TH1, but performing the cooling process for the predetermined time T37, the clothes at the end of the operation can be cooled to an appropriate temperature.

(Embodiment 4) Control means 24b shown in FIG.
Performs the cooling process immediately before the end of the operation until the temperature detected by the temperature sensor 13 becomes equal to or lower than a predetermined value, the rotation speed detected by the drum rotation detection means 20 is lower than the predetermined value, and the fan rotation detection means. When the rotation speed detected by 23 is lower than a predetermined value, the operation is terminated without performing the cooling stroke regardless of the information of the temperature sensor 13. Other configurations are the same as those in the third embodiment.

The operation of the above configuration will be described. In addition,
The operation when the rotation speed Nd of the rotary drum 2 detected by the drum rotation detection means 20 is higher than the predetermined value Nd1 and the rotation speed Nf of the blower fan 10 detected by the fan rotation detection means 23 is higher than the predetermined value Nf1 is: Since the operation is the same as that of the third embodiment, the description thereof will be omitted.

As shown in FIG. 12, at time t46 during operation, the drum rotation detection means 20 detects that the rotation speed Nd of the rotating drum 2 is lower than a predetermined value Nd1, and the fan rotation detection means 23 detects the rotation speed Nd. When it is detected that the rotation speed Nf of the blower fan 10 is lower than the predetermined value Nf1, the heater 12 and the motor 8 are turned off to end the operation. At this time, the exhaust temperature TH detected by the temperature sensor 13 is set to be ignored regardless of whether it is higher or lower than the predetermined temperature TH1 at the time t46.

That is, when the rotation of the motor 8 is normal and the rotation of the rotary drum 2 and the blower fan 10 are normal, the exhaust temperature TH and the actual clothing temperature have a correlation, so the exhaust temperature TH is predetermined. By performing the cooling process until the temperature becomes lower than the temperature TH1, the clothes can be cooled appropriately.

On the other hand, when the motor 8 is stopped for some reason (for example, the operation of the overload protection device),
Since the clothes are not stirred and blown, the operation is finished at time t46.

As described above, according to this embodiment, it is identified that the motor 8 is stopped due to a failure, and the exhaust temperature TH
It is possible to end the operation at the time t46 during the operation, instead of performing the cooling process until the temperature becomes lower than the predetermined temperature TH1.

(Embodiment 5) As shown in FIG. 13, the control means 24c is composed of a microcomputer or the like,
Information from the dryness detecting means 17, the temperature sensor 13, the drum rotation detecting means 20, and the fan rotation speed detecting means 23 is used to control the notifying means 25, the motor 8 and the heater 12, and the drum rotation detecting means 20 and the fan rotation detecting means. Based on the information from 23, the stop of the rotary drum 2, the stop of the blower fan 10, and the stop of the motor 8 are identified and the notification means 25 is provided.
It is configured to notify by. Other configurations are the same as those in the first to fourth embodiments.

The operation of the above configuration will be described. As in the third embodiment, as shown in FIG. 10, the rotation speed Nd of the rotary drum 2 detected by the drum rotation detection means 20 is higher than a predetermined value Nd1, and the blower fan 10 detected by the fan rotation detection means 23 is detected. The rotation speed Nf is a predetermined value Nf1
If it is higher, the number of times Rk that the resistance value R between the conductive members 15 becomes smaller than the predetermined value RS per unit time continuously becomes smaller than the set value R1 for the predetermined time T11. Time t14 when the set predetermined time T13 has elapsed
At, the heater 12 is turned off and the process proceeds to the cooling process.

At time t15 when the exhaust gas temperature TH detected by the temperature sensor 13 becomes lower than the predetermined temperature TH1, the motor 8 is turned off to end the operation, and the informing means 25 informs that the operation is completed normally.

Next, as in the first embodiment, as shown in FIG. 5, at the time t16 during operation, the rotation number Nd of the rotary drum 2 is set to the predetermined value Nd by the drum rotation detection means 20.
When it is detected that the temperature is lower than d1, the heater 12 is turned off to shift to the cooling process, and after a predetermined time T17 has elapsed, time t18.
At this time, the motor 8 is turned off to end the operation, and the notification means 2
5 indicates that the rotating speed of the rotating drum 2 is low.

Further, as in the second embodiment, as shown in FIG. 8, at the time t26 during operation, the rotation number Nf of the blower fan 10 is set to the predetermined value N by the fan rotation detection means 23.
When it is detected that the temperature is lower than f1, the heater 12 is turned off to shift to the cooling process, and after a predetermined time T27 has elapsed, the time t28.
At this time, the motor 8 is turned off to end the operation, and the notification means 2
5 notifies that the rotation speed of the blower fan 10 is low.

Further, as in the third embodiment, as shown in FIG. 11, at the time t36 during operation, the drum rotation detecting means 20 detects that the rotation speed Nd of the rotating drum 2 is lower than the predetermined value Nd1. In addition, the rotation number Nf of the blower fan 10 is set to the predetermined value N by the fan rotation detection means 23.
When it is detected that the temperature is lower than f1, the heater 12 is turned off to shift to the cooling process, and after a predetermined time T37 has elapsed, time t38.
At this time, the motor 8 is turned off to end the operation, and the notification means 2
The fact that the motor 8 is stopped due to a failure is identified by means of 5, and a notification is given.

Further, as in the fourth embodiment, as shown in FIG. 12, at the time t46 during operation, the drum rotation detecting means 20 detects that the rotation speed Nd of the rotating drum 2 is lower than the predetermined value Nd1. In addition, the rotation number Nf of the blower fan 10 is set to the predetermined value N by the fan rotation detection means 23.
When it is detected that it is lower than f1, the heater 12 and the motor 8 are turned off to end the operation, and the notifying means 25 identifies and notifies that the motor 8 is stopped due to a failure.

As described above, according to this embodiment, it is possible to specify and inform which of the rotary drum 2, the blower fan 10 and the motor 8 is out of order.

[0054]

As described above, according to the invention described in claim 1 of the present invention, a motor as a drive source, a rotary drum for storing and drying clothes, and a heat source for heating the rotary drum. Blower fan for supplying hot air, temperature detecting means for detecting exhaust temperature from the rotating drum, drum rotation detecting means for detecting the number of rotations of the rotating drum, information on the temperature detecting means and the drum rotation detecting means And a control means for controlling the operation of the motor and the heat source by means of which the cooling means performs a cooling stroke immediately before the end of operation until the temperature detected by the temperature detection means falls below a predetermined value, and the drum rotation When the rotation speed detected by the detection means is lower than a predetermined value, a long cooling stroke time is set regardless of the information of the temperature detection means. To identify that the arm is stopped by a failure, it is possible to cool the clothes at the end of the operation to a moderate temperature.

According to the second aspect of the invention, a motor as a drive source, a rotary drum for storing and drying clothes, and a blower fan for supplying hot air heated by the heat source into the rotary drum. , Temperature detection means for detecting the exhaust gas temperature from the rotary drum, fan rotation detection means for detecting the number of rotations of the blower fan, and information of the temperature detection means and the fan rotation detection means for the motor and the heat source. A cooling means immediately before the end of the operation until the temperature detected by the temperature detecting means becomes a predetermined value or less, and the rotation speed detected by the fan rotation detecting means. Is lower than a predetermined value, the cooling fan is configured to set a longer cooling stroke time regardless of the information of the temperature detecting means, so that the blower fan stops due to a failure. To identify that it is, it is possible to cool the clothes at the end of the operation to a moderate temperature.

According to a third aspect of the present invention, there is provided control means for controlling the operation of the motor and the heat source based on the information of the temperature detection means, the drum rotation detection means and the fan rotation detection means. The cooling step immediately before the end of the operation is performed until the temperature detected by the temperature detecting means becomes equal to or lower than a predetermined value, the rotation speed detected by the drum rotation detecting means is lower than a predetermined value, and the fan rotation detecting means. When the number of rotations detected by is lower than a predetermined value, it is configured to set a longer cooling stroke time regardless of the information of the temperature detecting means, so that it is identified that the motor is stopped due to a failure. Then, the clothes at the end of the operation can be cooled to an appropriate temperature.

Further, according to the invention described in claim 4, there is provided control means for controlling the operation of the motor and the heat source based on the information of the temperature detection means, the drum rotation detection means and the fan rotation detection means, and the control means comprises: The cooling step immediately before the end of the operation is performed until the temperature detected by the temperature detecting means becomes equal to or lower than a predetermined value, the rotation speed detected by the drum rotation detecting means is lower than a predetermined value, and the fan rotation detecting means. When the number of rotations detected by is lower than a predetermined value, the operation is terminated without performing the cooling stroke regardless of the information of the temperature detecting means, and therefore the motor is stopped due to a failure. Can be identified and the operation can be terminated.

According to the invention of claim 5, a motor as a drive source, a rotary drum for storing and drying clothes, and a blower fan for supplying hot air heated by the heat source into the rotary drum. A drum rotation detection means for detecting the rotation speed of the rotating drum; a fan rotation detection means for detecting the rotation speed of the blower fan; and the motor and the motor based on information of the drum rotation detection means and the fan rotation detection means. The control means for controlling the operation of the heat source and the informing means for informing the operating state are provided, and the control means stops the rotating drum and blows the air by the information from the drum rotation detecting means and the fan rotation detecting means. Since the stop of the fan and the stop of the motor are identified and notified by the notification means, any of the rotating drum, the blower fan, and the motor fails. Whether to have be able to notify specific to.

[Brief description of drawings]

FIG. 1 is a block diagram of a clothes dryer according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of the clothes dryer.

FIG. 3 is a perspective view of electrodes of the clothes dryer.

FIG. 4 is an operation time chart of the clothes dryer in a normal state.

FIG. 5 is an operation time chart when the rotary drum of the clothes dryer is stopped due to a failure.

FIG. 6 is a block diagram of a clothes dryer according to a second embodiment of the present invention.

[Fig. 7] Operation time chart of the clothes dryer in a normal state

FIG. 8 is an operation time chart when the blower fan of the clothes dryer is stopped due to a failure.

FIG. 9 is a block diagram of a clothes dryer according to a third embodiment of the present invention.

FIG. 10 is an operation time chart when the clothes dryer is operating normally.

FIG. 11 is an operation time chart when the motor of the clothes dryer is stopped due to a failure.

FIG. 12 is an operation time chart when the motor of the clothes dryer according to the fourth embodiment of the present invention is stopped due to a failure.

FIG. 13 is a block diagram of a clothes dryer according to a fifth embodiment of the present invention.

[Explanation of symbols]

2 rotating drums 8 motor 10 Blower fan 12 Heater (heat source) 13 Temperature sensor (temperature detection means) 20 Drum rotation detection means 24 Control means

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoshiaki Sakita             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 4L019 EA01 EA02 EA03 EB04 EB05

Claims (5)

[Claims] 1. A motor as a drive source, a rotary drum for storing and drying clothes, a blower fan for supplying hot air heated by a heat source into the rotary drum, and an exhaust temperature from the rotary drum. A temperature detection means; a drum rotation detection means for detecting the number of rotations of the rotary drum; and a control means for controlling the operation of the motor and the heat source based on information from the temperature detection means and the drum rotation detection means, The control means performs a cooling process immediately before the end of the operation until the temperature detected by the temperature detection means becomes equal to or lower than a predetermined value, and when the rotation speed detected by the drum rotation detection means is lower than a predetermined value, A clothes dryer configured to set a longer cooling stroke time regardless of the information of the temperature detection means. 2. A motor as a drive source, a rotary drum for storing and drying clothes, a blower fan for supplying hot air heated by a heat source into the rotary drum, and an exhaust temperature from the rotary drum is detected. A temperature detection unit; a fan rotation detection unit that detects the rotation speed of the blower fan; and a control unit that controls the operation of the motor and the heat source based on information from the temperature detection unit and the fan rotation detection unit. The control means performs the cooling process immediately before the end of the operation until the temperature detected by the temperature detection means becomes equal to or lower than a predetermined value, and when the rotation speed detected by the fan rotation detection means is lower than the predetermined value, A clothes dryer configured to set a longer cooling stroke time regardless of the information of the temperature detection means. 3. A control means for controlling the operation of the motor and the heat source according to the information of the temperature detection means, the drum rotation detection means and the fan rotation detection means, wherein the control means has a predetermined temperature detected by the temperature detection means. The cooling stroke immediately before the end of the operation is performed until the value becomes less than or equal to a value, the rotation speed detected by the drum rotation detection means is lower than a predetermined value, and the rotation speed detected by the fan rotation detection means is lower than a predetermined value. When the temperature is low, a long cooling stroke time is set regardless of the information of the temperature detecting means.
Or the clothes dryer according to 2. 4. A control means for controlling the operation of the motor and the heat source according to the information of the temperature detection means, the drum rotation detection means and the fan rotation detection means is provided, and the control means has a predetermined temperature detected by the temperature detection means. The cooling stroke immediately before the end of the operation is performed until the value becomes less than or equal to a value, the rotation speed detected by the drum rotation detection means is lower than a predetermined value, and the rotation speed detected by the fan rotation detection means is lower than a predetermined value. The clothes dryer according to claim 1 or 2, wherein when the temperature is low, the operation is terminated without performing the cooling process regardless of the information of the temperature detecting means. 5. A motor as a drive source, a rotary drum for storing and drying clothes, a blower fan for supplying hot air heated by a heat source into the rotary drum, and a drum for detecting the number of rotations of the rotary drum. Rotation detection means, fan rotation detection means for detecting the rotation speed of the blower fan, control means for controlling the operation of the motor and the heat source based on information from the drum rotation detection means and the fan rotation detection means, and The control means identifies stop of the rotating drum, stop of the blower fan, stop of the motor based on information from the drum rotation detecting means and the fan rotation detecting means. A clothes dryer configured to notify by means of notification means.