JPH11216294A - Drum type drying and washing machine and equipment provided with drying means - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drum type drying and washing machine capable of accurately and quickly performing abnormal temperature detection and abnormality reporting after a drying operation is ended without raising a cost by simple constitution, automatically starting and stopping water supply and performing fire extinguishing work further. SOLUTION: This machine is provided with a water tank 2, a drum 3 rotatably disposed inside the water tank 2, a heater 5 for drying for drying laundry housed in the drum 3 and an abnormal temperature sensor 41 for detecting an abnormal temperature inside the water tank 2. In the case of detecting the abnormal temperature during the drying operation or after the drying operation is ended by the abnormal temperature sensor 41, abnormality is reported.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus provided with a drying means, and more particularly to a drum-type drying and washing machine capable of processing all steps from washing to drying while storing laundry in a drum. In particular, the present invention relates to a drum-type washing machine capable of detecting a temperature abnormality in a water tank during or after a drying operation and automatically performing an abnormality notification and a fire extinguishing operation when the temperature is abnormal.

[0002]

2. Description of the Related Art Conventionally, a drum-type drying and washing machine has a structure in which a drum rotates around a horizontal axis in a water tub, so that washing and drying can be performed by the same drum. It is a typical drum-type drying washing machine that has functions from washing, dehydration to drying. A schematic configuration of the conventional drum type washing machine will be described below.

FIG. 9 is a side longitudinal sectional view showing an example of a conventional drum type washing machine, and FIG. 10 is a front longitudinal sectional view thereof. As shown in these figures, the drum-type drying and washing machine is mainly provided with a water tub 2 suspended by a spring inside an outer box 1 and a rotation inside the water tub 2 about a horizontal axis. It has a double structure with the drum 3 formed. The water tank 2 is suspended by a spring in order to absorb vibration during operation, and has a function of storing and discharging a washing liquid and a dehydrating liquid.

[0004] Water supply during washing,
In order to pass the drainage during dehydration and the warm air during drying,
Many small holes 4 are provided. A drying heater 5 is attached to the upper part of the water tank 2, and a blower 6 and a circulation duct 7 for circulating warm air during drying are provided.

A door 8 for taking in and out the laundry is provided in front of the drying and washing machine. By closing the door 8 and sandwiching the door packing 9 between the washing tub and the tub 2, the tub 2 is closed. It has a structure that seals the laundry input port. 10 is a drive motor for rotating the drum 3, 11 is a drain valve for discharging washing liquid and the like outside the machine,
Reference numeral 13 denotes a lint filter provided in a piping path between the water tank 2 and the drain valve 11. An operation / display section 20 is provided at the upper front of the washing machine, and a control circuit 21 is mounted inside the operation / display section.

In the drum type washing and washing machine having the above-described configuration, the washing operation is usually performed while the laundry is stored in the drum 3 by the control operation of the control circuit 21.
All the steps can be continuously executed in the order of rinsing → dehydration → drying, and each step can be executed independently. Hereinafter, the flow of operation in each step will be described.

First, in the washing step, the laundry is put into the drum 3, the water supply valve 18 is opened, and the washing liquid in which the detergent is dissolved is poured from above into the laundry, and the drum 3 is rotated at a low speed. Will be The laundry in the drum 3 is lifted to near the top in the drum 3 by centrifugal force due to the rotation of the drum 3 and baffles 17 provided at several places on the inner peripheral surface of the drum 3, and then falls by its own weight. This is called tumbling. By repeating this tumbling, the laundry is washed by the impact force at the time of falling.

Incidentally, the water level of the washing liquid is detected as a pressure change in an air trap 39 provided above the lint filter 13, and the pressure change is transmitted to the water level sensor 12 via a pressure guiding pipe 40. Detect as water level. The rinsing step is performed in the same manner as the washing step without using a detergent. Reference numeral 14 denotes a circulating water supply port for re-supplying the washing liquid at the time of washing or rinsing water to the inside of the drum as circulating water. The circulating water is supplied from the circulating water supply port 14 into the drum 3.

When washing with hot water, the water in the water tank 2 is heated by a hot water heater 19 fixed to the bottom of the water tank 2, and the water temperature is measured by a water temperature sensor 15 provided at the rear portion, for example, a thermistor. The water temperature is detected and fed back to the hot water heater 19 to control the water temperature. The dehydration step is performed in a state where the drum 3 is rotated at a high speed and the laundry is pressed against the inner surface of the peripheral wall of the drum 3 by using the centrifugal force. At this time, the water contained in the laundry
Of the water tank 2, is guided to the lower part along the inner wall of the water tank 2, and is discharged to the outside through the drain valve 11.

The drying step is performed by rotating the drum 3 at a low speed while blowing the air heated by the drying heater 5 to a high temperature into the water tank 2 through the circulation duct 7 by the blower 6. The air in the water tub 2 heated by the drying heater 5 and heated to a high temperature is stirred by the rotation of the drum 3 to raise the temperature of the entire inside of the water tub 2 and evaporate the moisture contained in the laundry in the drum 3. Let it.
The air in the high-temperature and high-humidity state enters the circulation duct 7 from the outlet at the upper part of the water tank 2, and is brought into direct contact with the cooling water before reaching the drying heater 5 to condense the water. It is dehumidified by discharging.

The dehumidified air is heated again by the drying heater 5 and is repeatedly blown into the water tub 2, whereby the laundry is dried. When the drying process is completed, the operation is terminated after performing a short-time blowing operation. As described above, a drum-type drying washing machine that can consistently perform washing to drying of laundry has been realized.

However, the above-mentioned conventional drum-type drying washing machine or the clothes dryer exclusively for drying is provided with a heating device such as a heater for the drying operation as described above, and supplies hot air to the inside of the machine. So there is always a risk of fire. In addition, after the drying operation is completed, a short-time air blowing operation is performed, but the clothing does not cool down enough. It generates abnormal heat and reacts with edible oils and chemicals attached to clothing, causing spontaneous ignition, which may cause a fire. Further, since there is no means for informing the user of the abnormality, there is a possibility that the damage is increased.

Various countermeasures have conventionally been taken in order to deal with such a problem. For example, Japanese Patent Laid-Open No. 2-7
As described in Japanese Patent No. 4300, in a clothes dryer, the temperature of clothes after the drying operation is detected, and when an abnormal temperature is detected, the drum is rotated to tumbl the clothes. Further, as described in Japanese Patent Application Laid-Open No. 7-8691, the clothes dryer is configured to perform the intermittent operation of the drum performed after the drying operation as necessary according to the temperature condition.

Alternatively, as described in Japanese Patent Application Laid-Open No. 5-137897, in a clothes dryer, when an abnormal temperature is detected, an automatic fire extinguisher is operated by remote control. Further, as described in JP-A-61-122898, when an abnormal temperature is detected,
The water supply valve is operated to supply water and extinguish the fire.

[0015]

However, the configurations described in the above-mentioned JP-A-2-74300 or JP-A-7-8691 do not have sufficient control means. In the unlikely event of a fire, there is nothing you can do. Further, in the configuration described in the above-mentioned Japanese Patent Application Laid-Open No. 5-137897, equipment is expensive, and an installation space for a fire extinguisher is required.
The problem remains for general household use. In addition, Japanese Unexamined Patent Application Publication No.
In the configuration as described in JP-A-122898, there is no function to stop water supply, and when an abnormality occurs at night or the like and the user cannot recognize it, there is a possibility that a secondary disaster such as flooding will be induced. There are still problems to implement.

According to the present invention, it is possible to accurately and promptly detect abnormal temperature and notify abnormal temperature after the end of the drying operation with a simple configuration without increasing the cost by solving the above problems.
It is another object of the present invention to provide a drum type washing machine or a device equipped with a drying means, which can automatically start and stop water supply to extinguish a fire.

[0017]

In order to achieve the above object, the present invention provides a water tank, a drum rotatably disposed in the water tank, and a method for drying laundry stored in the drum. And a temperature detecting means for detecting an abnormal temperature in the water tank, and when the abnormal temperature is detected during the drying operation or after the drying operation is completed, the abnormality is notified.

Further, a door for taking the laundry in and out of the drum and an open / close detecting means for detecting the open / closed state of the door are provided, and during the temperature detection in the water tub after the drying operation, the door is opened. When the opening is detected by the opening / closing detecting means, the temperature detection is terminated.

Alternatively, there is provided a door for taking the laundry in and out of the drum, and open / close detecting means for detecting the open / closed state of the door, wherein the door is opened during the temperature detection in the water tub after the drying operation. The temperature detection is terminated when the opening / closing detection means detects that the door has been opened and then closed again.

The temperature detecting means is mounted on the peripheral wall above the center of the water tank. Further, a water temperature detecting means for detecting a water temperature in the water tank is provided, and the temperature in the water tank is detected during the drying operation or after the drying operation is completed by the water temperature detecting means also serving as the temperature detecting means. .

Further, when an abnormal temperature is detected in the water tank during or after the drying operation, water is supplied into the water tank, and the water supply is stopped after a predetermined time has elapsed. Alternatively, a water level detecting means for detecting a water level in the water tank is provided, and the water supply is stopped when a predetermined water level is detected by the water level detecting means. Further, the drum is rotated during the water supply. Also,
A circulation pump for re-supplying water discharged from the water tank to the water tank is provided, and the circulation pump is operated during the water supply.

Further, the power supply is automatically cut off after the temperature detection in the water tank after the drying operation is completed.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the appearance of a drum type washing machine according to the present invention. In the figure, reference numeral 1 denotes an outer box, 8 provided on the front is a door for taking in and out laundry, and 2 provided on the upper front.
0 is an operation / display unit.

FIG. 2 is a side vertical sectional view showing an embodiment of the drum type washing and washing machine of the present invention, and FIG. 3 is a front vertical sectional view of the same. As is apparent from these figures, the basic structure of the drum type washer of the present invention is similar to that of the conventional drum type washer. The configuration of the main part will be described again. As shown in these figures, this drum-type washing machine mainly includes a water tank 2 suspended by a spring inside an outer box 1 and a horizontal tank inside the water tank 2. It has a double structure with the drum 3 arranged to rotate about an axis.

The water tank 2 is suspended by a spring to absorb vibrations during the washing, rinsing, dehydrating and drying operations, and stores and discharges washing liquid and dehydrating liquid. Has a function. On the entire peripheral wall of the drum 3,
A large number of small holes 4 are provided for passing water for washing, draining for dehydration, and hot air for drying. Also,
A drying heater 5 is attached to the upper part of the water tank 2 and a blower 6 for circulating hot air during drying.
And a circulation duct 7.

A door 8 for taking in and out laundry is provided at the front of the drying and washing machine. By closing the door 8 and sandwiching a door packing 9 between the washing tub and the tub 2, the tub 2 is closed. The laundry input port is sealed to prevent washing water and hot air during drying from leaking out of the machine. The outer box 1 facing the door 8 has a door switch 16 (not shown) having a detecting means for detecting opening and closing of the door.
Is attached.

Reference numeral 10 denotes a drive motor for rotating the drum 3, reference numeral 11 denotes a drain valve for discharging the washing liquid and the like out of the machine, and reference numeral 13 denotes a pipe route between the water tub 2 and the drain valve 11. It is a waste thread filter. The lint filter 13 is configured to be removable from the lower front surface of the outer box 1.
Note that baffles 17 are provided at several places on the inner peripheral surface of the drum 3. An operation / display unit 20 is provided at the upper front of the drying and washing machine.
1 is attached.

Incidentally, the water level of the washing liquid is detected as a pressure change in an air trap 39 provided above the lint filter 13, and the pressure change is transmitted to the water level sensor 12 via a pressure guiding pipe 40. Detect as water level. Also, 14
Is a circulating water supply port for re-supplying washing water and rinsing water during washing as circulating water into the drum, and circulating the circulating water once passed through the lint filter 13 by a circulating pump 38. Circulating water is supplied from the circulating water supply port 14 into the drum 3.

FIG. 4 is a block diagram showing the configuration of a control system of the drum type washing machine according to the present embodiment. As shown in the figure, a main part of the control circuit 21 surrounded by a broken line is a microcomputer 22 further surrounded by a dashed line, which is a CPU 23, a RAM 24, a ROM 2
5, a timer 26, a system bus 27, and a plurality of I / Os.
An O port 28 is provided. The microcomputer 22 operates by being supplied with a constant voltage from the power supply circuit 31 in the control circuit 21 to the power supply terminals VDD and VSS, so that a signal can be input from the reset circuit 32 to the RESET terminal. Has become.

The CPU 23 comprises a control unit 29 and a calculation unit 30. The control unit 29 includes a ROM 2
5 retrieves and executes the instruction stored in the control unit 2 while executing the instruction.
Based on the control signal given from the control unit 9, operations such as binary addition, logical operation, increase / decrease, comparison and the like are performed on data input from various input devices and the RAM 24. Therefore, ROM
25 stores in advance means for operating various devices, conditions set for various determinations, rules for processing various information, and the like.

The microcomputer 22 has an input key circuit 3 connected to various operation switches (not shown).
3, and signals are input from the water level sensor 12, the water temperature sensor 15, the door switch 16, and a state detection circuit 34 connected to the abnormal temperature sensor 41 described later via a plurality of I / O ports 28, and based on this, Display device drive circuit 35, buzzer drive circuit 36, load drive circuit 37
Output control.

Here, the display device drive circuit 35 drives the display device provided in the operation / display section 20 described above, and the buzzer drive circuit 36 operates when the key input is completed, when the operation is completed, and when the operation is abnormal. At times, a buzzer (not shown) is sounded to inform the user to that effect. The load drive circuit 37 includes a drain valve 11, a blower 6, a drive motor 1
0, a water supply valve 18, a drying heater 5, a hot water heater 19, and a circulation pump 38 are connected. These arrangements and functions are as described in the above-described conventional technique or embodiment.

Hereinafter, main control operations according to the present embodiment will be described with reference to flowcharts. FIG.
5 is a flowchart showing the first embodiment. As shown in the figure, first, when the operation is completed, step #
At 5, the microcomputer 22 determines whether or not the drying operation has been completed. If the drying operation has been completed, the process proceeds to step # 10, where the timer 26 of the microcomputer 22 is set. Subsequently, the process proceeds to step # 15, where a timer count is performed, and it is determined in step # 20 whether a timer has been counted for a predetermined time (for example, one hour).

If the timer has not been counted for the predetermined time, the flow shifts to step # 25, where the water tank 2 shown in FIGS.
In, the temperature inside the water tank 2 is detected by an abnormal temperature sensor 41 such as a thermistor, which is a temperature detecting means attached to a peripheral wall above the center, or the water temperature sensor 15. Subsequently, the process proceeds to step # 30, in which it is determined whether or not a detected abnormal temperature (for example, 100 ° C.) or more is detected. If not, the process returns to step # 15.

If it is determined in step # 5 that the drying operation has not been completed, it is determined that the operation in the course not including the drying operation has been completed, and the flow proceeds to step # 35 to perform power-off automatic off control. At 40, the power is turned off. This power supply auto-off control is not directly related to the present invention. Also, when the timer is counted for a predetermined time in step # 20, the process proceeds to step # 35, and the same control is performed.

If it is determined in step # 30 that the temperature is higher than the set abnormal temperature due to an abnormality such as ignition of clothing in the water tank 2 during temperature detection, the process proceeds to step # 45, and an abnormality is notified. In the present embodiment, whether or not the temperature is equal to or higher than a set abnormal temperature is used as a criterion.
It is also possible to use the temperature change rate indicated when a temperature rise of 0 ° C. or more is detected as a criterion. Further, as means of the abnormality notification, for example, there is a notification by a buzzer sound and a display as shown in FIG.

Subsequently, the process proceeds to step # 50, in which the water supply valve 18 as a water supply means is operated to supply water into the water tank 2, and the fired clothing is extinguished. Then step #
55, and the timer 2 of the microcomputer 22
6 is set, and a timer count is performed in step # 60. Then, in step # 65, the water level in the water tank 2 is detected by the water level sensor 12.

Further, in step # 70,
The drum 3 is rotated. This makes it possible to make the clothes absorb water efficiently and extinguish the fire. Step #
At 75, after a predetermined time from the start of water supply, the circulation pump 38 is operated to spray water from above on the clothes. This makes it possible to extinguish the clothing more effectively and to extinguish the fire in a shorter time.

Subsequently, the flow shifts to step # 80, where it is determined whether or not the timer has been counted for a predetermined time (for example, 10 minutes).
Move to 85. In step # 85, it is determined whether or not the water level sensor 12 has detected a predetermined water level. If not, the process returns to step # 60.

If the timer has been counted for the predetermined time in step # 80, or if the predetermined water level has been detected in step # 85, the process proceeds to step # 90, and the water supply means is stopped. Further, the process proceeds to step # 95, in which the rotation of the drum 3 and the operation of the circulation pump 38 are stopped, and the process proceeds to step # 100, where the power supply is automatically turned off, and then the power supply is cut off in step # 105.

FIG. 7 is a flowchart showing the second embodiment. As shown in the figure, first, at the time when the operation is completed, in step S5, the microcomputer 22 determines whether or not the drying operation is completed, and if the drying operation is completed, the process proceeds to step S10. Step S10
, A signal for detecting the open / closed state of the door from the door switch 16 is input to the microcomputer 22;
It is determined whether the door opening is detected. If the door opening has not been detected, the process proceeds to step S15, and the temperature inside the water tank 2 is detected by the abnormal temperature sensor 41 or the water temperature sensor 15. Subsequently, the process proceeds to step S20, in which it is determined whether a temperature equal to or higher than the set abnormal temperature is detected. If not, the process returns to step S10.

If the drying operation has not been completed in step S5, it is determined that the operation has been completed on a course not including the drying operation, as in the first embodiment. The control is performed, and then the power is turned off in step S30. In addition, the above step S
When the door opening is detected in step S10, the process proceeds to step S25, and the same control is performed.

In step S20, if the temperature of the set abnormal temperature is detected due to an abnormality such as ignition of the clothes in the water tank 2 during the temperature detection, the process proceeds to step S35, and the abnormality is notified by a buzzer or a display. . Subsequently, the flow shifts to step S40, where the water supply valve 1 serving as a water supply means is used.
8 is operated to supply water into the water tank 2 and extinguish the fired clothing. Subsequently, the process shifts to step S45, the timer 26 of the microcomputer 22 is set, and the timer count is performed in step S50. Then, in step S55, the water level in the water tank 2 is detected by the water level sensor 12.

Further, in step S60,
The drum 3 is rotated. This makes it possible to make the clothes absorb water efficiently and extinguish the fire. Step S
At 65, after a predetermined time from the start of water supply, the circulation pump 38 is operated to spray water from above on the clothes. This makes it possible to extinguish the clothing more effectively and to extinguish the fire in a shorter time.

Subsequently, the flow shifts to step S70, in which it is determined whether or not a timer has been counted for a predetermined time (for example, 10 minutes).
It moves to 75. In step S75, it is determined whether or not the water level sensor 12 has detected a predetermined water level. If not, the process returns to step S50.

If the timer has been counted for the predetermined time in step S70, or if the predetermined water level has been detected in step S75, the process proceeds to step S80, and the water supply means is stopped. Further, the flow shifts to step S85, in which the rotation of the drum 3 and the operation of the circulation pump 38 are stopped, and the flow shifts to step S90, where the power supply is automatically turned off, and then the power supply is cut off in step S95.

FIG. 8 is a flowchart showing the third embodiment. As shown in the figure, first, at the time when the operation is completed, in step P5, the microcomputer 22 determines whether or not the drying operation is completed, and if the drying operation is completed, the process proceeds to step P10. Step P10
, A signal for detecting the open / closed state of the door from the door switch 16 is input to the microcomputer 22;
It is determined whether the door opening is detected. If the door opening has not been detected, the process proceeds to step P15, and the temperature inside the water tank 2 is detected by the abnormal temperature sensor 41 or the water temperature sensor 15. Subsequently, the flow shifts to step P20, where it is determined whether or not a temperature higher than the set abnormal temperature is detected. If not, the flow returns to step P10.

If the drying operation has not been completed in step P5, it is determined that the operation has been completed on a course not including the drying operation, as in the first embodiment. The control is performed, and then the power is turned off in step P35. In addition, step P
If it is determined in step 10 that the door is opened, the process proceeds to step P25, and it is determined whether the door is closed. If the door is detected, the process proceeds to step S30 to perform the same control. If not, the process returns to Step P10.

If it is determined in step P20 that the temperature is higher than the set abnormal temperature due to an abnormality such as ignition of clothing in the water tank 2 during temperature detection, the process proceeds to step P40, and an abnormality is notified by a buzzer or a display. . Subsequently, the flow shifts to Step P45, where the water supply valve 1 serving as a water supply means is used.
8 is operated to supply water into the water tank 2 and extinguish the fired clothing. Subsequently, the flow shifts to step P50, where the timer 26 of the microcomputer 22 is set, and the timer is counted in step P55. Then, in Step P60, the water level in the water tank 2 is detected by the water level sensor 12.

Further, in step P65,
The drum 3 is rotated. This makes it possible to make the clothes absorb water efficiently and extinguish the fire. Step P
At 70, the circulation pump 38 is operated a predetermined time after the start of water supply, and water is sprayed on the clothing from above. This makes it possible to extinguish the clothing more effectively and to extinguish the fire in a shorter time.

Subsequently, the flow shifts to step P75, where it is determined whether or not a timer has been counted for a predetermined time (for example, 10 minutes).
Move to 80. In Step P80, it is determined whether or not the water level sensor 12 has detected a predetermined water level. If not, the process returns to Step P55.

If the timer has been counted for the predetermined time in step P75, or if the predetermined water level has been detected in step P80, the flow shifts to step P85 to stop the water supply means. Then, the flow shifts to Step P90, where the rotation of the drum 3 and the operation of the circulation pump 38 are stopped, and the flow shifts to Step P95 to perform power auto-off control. Then, the power is turned off at Step P100.

It should be noted that, without being limited to the above-mentioned flowchart,
When an abnormal temperature is detected during the drying operation, an abnormality notification or fire extinguishing operation may be performed. Further, the configuration described so far is not limited to a drying washing machine, but can be applied to all appliances having a drying unit.

[0054]

As described above, according to the present invention,
With a simple configuration, it is possible to accurately and promptly detect abnormal temperatures after the drying operation and notify abnormalities without increasing the cost, and to automatically start and stop water supply to extinguish fires. It is possible to provide a drum-type drying washing machine capable of doing things. In particular, according to the first aspect, when an abnormal temperature is detected during the drying operation or after the drying operation is completed, the abnormality is notified, so that the user can be quickly notified of the abnormality and the damage of the fire can be minimized. Can be.

Further, according to the second or third aspect, the temperature can be detected at an indefinite time until the user takes out the clothes, so that the abnormality can be reliably detected. According to the fourth aspect, the rising hot air generated when the clothing is ignited can be accurately and promptly detected, so that the abnormality can be notified more quickly.
Fire damage can be minimized. According to the fifth aspect, since the existing water temperature detecting means also serves as the temperature detecting means, abnormal temperature detection can be performed without increasing the cost of the product.

According to the present invention, the water supply is stopped after a lapse of a predetermined time from the start of water supply, so that water leakage due to overflow can be prevented, and a secondary disaster can be prevented. According to the seventh aspect, since the water supply is stopped by detecting the set water level, it is possible to supply a fixed amount of water into the water tank regardless of the amount of water supply, thereby preventing leakage due to overflow and preventing secondary disaster. Can be prevented.

According to the eighth aspect of the present invention, since the drum is rotated during the water supply, it is possible to uniformly contact the ignited clothing with water in a short time, and an effective fire extinguishing operation can be performed. In addition, according to the ninth aspect, the circulating pump is operated during the water supply, so that the fired clothing can be discharged from the upper portion of the garment, and an effective fire extinguishing operation can be performed.

According to the tenth aspect, the abnormal temperature detection control after the end of the drying operation can be performed by the drum type washing and washing machine having the power supply auto-off function, and safety can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a drum type washing machine according to the present invention.

FIG. 2 is a side longitudinal sectional view showing one embodiment of the drum type washing and washing machine of the present invention.

FIG. 3 is a front vertical sectional view showing one embodiment of a drum type washing and washing machine of the present invention.

FIG. 4 is a block diagram showing a configuration of a control system of the drum-type drying washing machine according to the embodiment.

FIG. 5 is a diagram showing a display example of abnormality notification by a display / operation unit.

FIG. 6 is a flowchart showing a first embodiment.

FIG. 7 is a flowchart showing a second embodiment.

FIG. 8 is a flowchart showing a third embodiment.

FIG. 9 is a side longitudinal sectional view showing an example of a conventional drum type washing machine.

FIG. 10 is a front vertical sectional view showing an example of a conventional drum-type drying and washing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer box 2 Water tank 3 Drum 4 Small hole 5 Drying heater 6 Blower 7 Circulation duct 8 Door 9 Door packing 10 Drive motor 11 Drain valve 12 Water level sensor 13 Lint filter 14 Circulating water supply port 15 Water temperature sensor 16 Door switch 17 Baffle 18 Water supply valve 19 Hot water heater 20 Operation / display unit 21 Control circuit 22 Microcomputer 23 CPU 24 RAM 25 ROM 26 Timer 27 System bus 28 I / O port 29 Control unit 30 Operation unit 31 Power supply circuit 32 Reset circuit 33 Input key circuit 34 state detection circuit 35 display device drive circuit 36 buzzer drive circuit 37 load drive circuit 38 circulation pump 39 air trap 40 pressure guide pipe 41 abnormal temperature sensor

Claims (11)

[Claims] 1. A water tank, a drum rotatably disposed in the water tank, a heater for drying laundry stored in the drum, and temperature detecting means for detecting an abnormal temperature in the water tank. A drum-type drying washing machine characterized in that when the temperature detecting means detects an abnormal temperature during the drying operation or after the drying operation is completed, the abnormality is notified. 2. A door for taking laundry in and out of the drum, and open / close detection means for detecting an open / closed state of the door, wherein during the temperature detection in the water tub after the drying operation,
2. The drum type washing machine according to claim 1, wherein the temperature detection is terminated when the opening / closing detecting means detects that the door is opened. 3. A door for taking laundry in and out of the drum, and open / close detection means for detecting the open / closed state of the door, wherein during the temperature detection in the water tub after the drying operation,
2. The drum type washing machine according to claim 1, wherein the temperature detection is ended when the opening / closing detecting means detects that the door has been opened and then closed again. 4. The drum type washing machine according to claim 1, wherein said temperature detecting means is mounted on a peripheral wall above said water tank above a center of said water tank. 5. A water temperature detecting means for detecting a water temperature in the water tank, wherein the temperature in the water tank is detected during the drying operation or after the drying operation is completed by the water temperature detecting means also serving as the temperature detecting means. The drum type washing machine according to any one of claims 1 to 3, wherein: 6. The method according to claim 1, wherein when an abnormal temperature is detected in the water tank during or after the drying operation, water is supplied into the water tank, and the water supply is stopped after a predetermined time has elapsed. Item 6. A drum-type washing machine according to any one of Items 5. 7. The drum according to claim 6, further comprising a water level detecting means for detecting a water level in the water tank, wherein the water supply is stopped when a predetermined water level is detected by the water level detecting means. Drying washing machine. 8. The drum type washing machine according to claim 6, wherein the drum is rotated during the water supply. 9. A circulating pump for re-supplying water discharged from the water tank to the water tank, wherein the circulating pump is operated during the water supply. The drum-type drying washing machine according to the above. 10. The drum type washing machine according to claim 1, wherein the power supply is automatically shut down after the temperature detection in the water tank after the drying operation is completed. . 11. An apparatus provided with a drying means having the features according to claim 1.