JPS58212496A - Garment dryer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention prevents the clothes from becoming too wet with water droplets when moistening the clothes after drying to make ironing easier.

Clothes dryers equipped with a humidifying function have been considered to make ironing easier, but since water droplets remain in the humidifying pipe for blowing steam, it is difficult to connect a sudden steam valve. Water droplets may gush out and adhere to clothing, creating stains.

In the present invention, the water droplets are discharged through the heater by opening the steam valve on the heater side for a short time before opening the live steam valve, so that the water droplets are not blown out through the humidifying pipe.

To explain based on the diagram below, (1) is a clothes dryer with a clothes loading door (2) on the front, and above this door there is a main switch (3) for turning on and off the power, and an automatic detection Dryness adjustment knob to adjust the degree of dryness at the end of the course (
4), a keyboard (5) for course setting, time setting, or temperature setting, a fluorescent display tube (6) for time display, a fluorescent display tube (7) for temperature display, and steam as a heat source for drying. A steam pressure needle (8) is provided to display the pressure. In addition, a drying drum (10) is rotatably installed in the drying chamber (9) formed in the center of the clothes dryer, and a heater (11) (121 (131) divided into three parts is installed above it). , and a bottomed cylindrical filter ring and exhaust blower (
Company)) has been established. The three-divided heater (11)
a2Q3), one heater α1) is connected to the first steam valve 0
6) is connected to the steam supply pipe a'r through a second steam valve, and the other two heaters are connected to the steam supply pipe a'r through a common second steam valve, and further From this steam supply pipe 07), a humidifying pipe αm is branched and its tip opens into the drying chamber (9), and a live steam valve ■ and a manual opening adjustment valve +21) are installed in the middle of this humidifying pipe. is inserted.

The drying drum 0■ is boo! The exhaust blower (1) is rotated by a motor via (22) (231) and
5) is rotated by another motor (5). As the exhaust blower rotates, empty air is sucked in through the intake port (A), heated by the heaters (11), (12), and (13), and then enters the drying drum 00 to remove moisture from the clothes. It is discharged from the exhaust port. Therefore, the heater Ql
) (12) (13) and the drying drum 00), there is an inlet temperature detector (28) such as a thermistor between the drying drum 00) and the drying drum 00).
An outlet temperature detector consisting of a thermistor on the outlet side of
are provided for each. (A) is a printed circuit board constituting a control circuit, and a block diagram of this circuit is shown in FIG.

, ,1.1゜The control circuit is mainly composed of a microcomputer, and the 0
1) Central processing unit (in the case of this embodiment, it has a built-in RAM).

(hereinafter abbreviated as CPU) and ROM that stores programs
(branches) are connected by an address bus (12 bits) for specifying program addresses and a data bus (8 bits) for transferring instructions to the CPU (11). C! The PU (31) has an IC for input/output expansion.
(to) and (to) are connected, making it possible to handle a large number of inputs and outputs. For the input of CPU01,
6 bits from the D/A converter (g) that outputs the set values of the inlet temperature, outlet temperature, and dryness adjustment child (4), as well as the 6 bits for setting the operating course, time and temperature, and starting and stopping operations. 4 bits from the keyboard switch and the course preset switch (g) for selecting and setting the driving course when the power is turned on, the 50"Z/60Hz specification changeover switch, the door switch, and the thermal switch 6 bits, 1 bit from the reset circuit (38) for starting the CPU01) when the power is turned on, and a rectangular wave voltage of the power supply frequency to generate the CPU01).
There is one bit from the external interrupt circuit (support) that is input to the external interrupt terminal of 1). In addition, the output of the CPU (311) is
to the fluorescent display tube (6) for displaying the timetable Suigo;
to a fluorescent display tube (7) for displaying temperature, etc.;
To the D/A converter can for temperature measurement and reading the set value of the dryness adjustment knob, and to drive the steam valve αe08), live steam valve ■, 7 unmotor (5), and drum motor (to). The operation of the dryer of this embodiment will be explained in sequence according to the flowchart in Fig. 4.First, when the power is turned on, the reset circuit (to) is activated. Start execution from the instruction stored in the CPU (31) and ROM (321)lr-) addresses, remove all outputs, clear the RAM area, and then open/close the 50Hz/60H2 specification selector switch. Input the status and decide whether it is 5QHz specification or 60Hz specification.

Here, the setting of the driving course will be briefly explained.

When the power is turned on, the course preset switch (36
), the driving course and program number are set, so the data of the inlet set temperature, outlet set temperature, hot air set time, and cold air set time that have been written in advance in the ROM (K) is stored in the CPU (31). It is written in a predetermined area secured in the RAMK.In addition, an area is secured in the RAM to store data such as hot air operation time and cold air operation time, and the remaining operation time or total operation time is stored. The driving course can also be set using the keyboard (5), and when the driving course and program number are set using the keyboard, the data in the ROM (:@) is written to the RAM in the same way as when the power is turned on. The settings other than the hot air setting time and temperature of the course can be changed using the keyboard (5), and a part of the drying program prepared in advance can be changed.The operation is carried out based on the data in the RAM.

When the initial setting at the time of power-on is completed, the operation routine starts from ◯ in the flowchart of FIG. 4(a). First, time is counted in units of one second using input from the external interrupt circuit (a), and during operation, the output control circuit is used as a reference for output control.
Use it for Karan F during driving time. Next, the D/A converter (
Read the set values of the inlet temperature, outlet temperature and dryness adjustment knob (4) using The input is checked, and if there is an input, the process corresponding to that input is performed, for example, when the automatic detection course is pressed, the automatic detection course is set. When the start key (included in the keyboard switch (5)) is pressed after the course has been set correctly, the state of the door switch (support) is input, and if the door is closed, it will enter the operating state. enter.

The processing of the keyboard switch (5) is shown in Figure 4 (c) ~
This is carried out according to the flowchart shown in FIG. First, it identifies which key was pressed and performs the processing corresponding to each key. The automatic detection key will not work if the vehicle is in the middle of driving on the automatic detection course, not only during operation or when an abnormality occurs, but also when the vehicle is stopped midway. This is the same for other course keys (however, the live steam input key remains active even during operation.

This is to prevent you from easily changing from the automatic detection course to another course. □ If you accidentally press another course key while driving on the automatic detection course, It prevents the driving data of the detection course from being cleared and is essential for normal driving. However, it is possible to change from the automatically detected course before the start of operation.

In addition, when the user wishes to change from the automatically detected course to another course, by pressing the stop key again from the stopped state, the CPU II) will be returned to the state before starting operation, and the change will be possible. . By performing the above processing, the keyboard and keyboard during stops during the automatic detection course, where it is important to retain driving data, can be saved.
It is possible to prevent erroneous operation of the switch (5), and even if you want to consciously change the course, you can easily change it by pressing the stop key twice, so there is no need to provide a special key for changing the course. It is very effective.

In addition to setting the live steam input course, the live steam input key can also be used to add or add live steam input after cold air operation in a course other than the live steam input course. This is set in the RAM by pressing and copying the live steam input key while running another course, and is reset by pressing the live steam key again.

Further, when the live steam input key is pressed during the live steam input course operation, the live steam input set time is displayed on the fluorescent display tube (6) only while the key is pressed.

After cold air operation is finished, if live steam is being input, press the number key within 5 seconds after pressing the live steam input key, and the number will be displayed in the area of the RAM that stores the live steam operation time in minutes or more. The operating time can be changed. Specifically, a changeable time counter is provided in the RAM of the CPU01), and changes to the driving time are allowed until this count reaches 5 seconds, and changes to the driving time are prohibited when the count reaches 5 seconds or more. There is. The changeable time counter is cleared each time a numeric key is pressed, and the numeric key is not pressed when 5 seconds have elapsed since the last numeric key was pressed.

By doing this, although the keyboard method is used, the operating time can be adjusted during operation like the analog timer of conventional dryers.Also, since the seconds part is not changed, even if the θ value is Even if you press a number key, it will not stop immediately, and you will not make mistakes in changing it. Furthermore, since changing the driving time is automatically prohibited by dividing the time, there is no chance of operational errors.

The live steam supply key operates the cold air for 5 minutes or until the outlet temperature reaches 45°C, then stops the output of the fan motor (25) while the drum is rotating, and turns on the live steam valve (4). ) while keeping it closed, open steam valve 06) and α mark for 20 seconds to drain the water in the steam pipe to heater Ql) 112.
After discharging through (13), steam valve 06) and 0
8), open the live steam valve ■ and transfer the live steam to the drum (10
Insert into 1. During this time, the exhaust blower 05) is stopped.

The reason why cold air operation is performed before introducing live steam is to lower the temperature of the clothing to some extent and increase the adhesion effect of live steam. Also, before opening the live steam valve, steam valve 06)
By opening the α mark and discharging the water in the steam pipe, the inconvenience of directly wetting clothes with water is eliminated. Furthermore, by stopping the exhaust blower α9 during drainage, it is possible to minimize the rise in the temperature of the clothes that has been lowered by cold air operation, and by stopping the blower α9 and introducing live steam, The adhesion effect becomes thicker.

The end of live steam injection is when the live steam injection course has been operated for the set live steam injection time, or when live steam injection is performed continuously after the end of another course such as an automatic detection course, 6 minutes have elapsed. or when the exit temperature set for each course is reached. Particularly in cases other than the live steam injection course, the operation ends at the exit set temperature, which has a great effect on protecting fabrics that are sensitive to heat.

If you press the stop key while the live steam valve ■ is open, or if the operation ends after satisfying the above conditions, the live steam valve will close, the drum motor will stop, and the fan will shut off. Drive the motor (5) to operate the exhaust blower (
2) is rotated for 6 seconds to exhaust the steam filling the drum aα. With this, when door (2) is opened,
This prevents steam from blowing out forward, prevents accidents such as burns, and prevents the control circuit from becoming wet and causing malfunctions.

[1] In the present invention, a humidifying pipe is branched from a steam supply pipe to a heater, a live steam valve is inserted into the humidifying pipe, and when humidifying, the steam supply valve to the heater is opened for a short time to supply steam. After the moisture remaining in the pipe is discharged through the heater, the steam valve is opened and steam is blown in to moisten the clothes, so there is no chance of water droplets hitting the clothes and causing stains. , the finish can be beautifully polished.

[Brief explanation of drawings]

Figure 1 is a front view of the clothes dryer of the present invention, Figure 2 is a vertical side view of the same, Figure 6 is a block diagram of the information transmission section, and Figures 4 (A) to (Power) are flow charts. 4=09・・・・・・
Humidifying pipe ■・・・Live steam valve Figure 4 (A)

Claims (1)

[Claims] (1) In a device in which suction air is heated by a heater connected to a steam supply pipe and the heated air is used to dry clothes in a drying drum, a humidifying pipe for supplying steam to the drying drum is connected to the steam supply pipe. A clothes dryer characterized in that a live steam valve is inserted in the humidifying pipe, and the steam valve on the heater side is opened for a short time and then opened when steam is supplied to the drying drum.