JPS60100999A - Clothing 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] (a) Industrial Application Field The present invention is designed to place clothes in a rotating drum, dry them with hot air, and then cool them with cold air to a temperature i-+ that makes it easy to take out the clothes. Regarding drying clothes mK.

<01 Prior Art This type of clothes drying machine completes the entire process by performing cold air operation after hot air operation. At the end of this process, the clothes are cooled and can be taken out immediately, but in reality, the rotating drum It is often left unremoved after stopping. Therefore, clothing often becomes wrinkled while left unused, and must be treated by ironing, pressing, spraying, etc. On the other hand, in order to prevent wrinkles, it is necessary to completely submerge the clothes, so it is conceivable to continue operating the cold air, but if this continues for a long time, the clothes may be damaged by mechanical force. Become.

(c) Purpose of the Invention The great invention is to reduce wrinkles while suppressing damage to clothing.

B) Structure of the Invention The major invention is a clothes dryer that performs short-term cold air operation multiple times with a predetermined pause time between hot air operation and cold air operation. By rotating the rotary drum, wrinkles are suppressed, and by intermittent rotation, damage is suppressed.

(E) Example $ An example of the invention will be described based on the drawings. (1) is an outer box, the rear opening of which is closed by a back plate (2), and a clothes slot (4) that is opened and closed by a door (3) is provided on the front surface of the outer box. (6) is a rotating drum that serves as a drying chamber for storing clothes, and a front plate (9) is fixed to the front end of its peripheral wall (7), and the edge of this front plate (9) is fixed to the front of the outer box. It is fitted to the outer peripheral flange az of the drum support plate α11 via a sliding member such as felt 03.

A shaft body is protruded from the center of the rear wall (8) of the rotating drum (6), and this shaft body 1I41 is attached to a cylinder formed at the center of the support plate [151]. )'ik, and the tapping screw G is screwed into the tip of the shaft body [14+ through the washer.
It is designed not to go beyond 161. As shown in FIG. 2, both ends of the support plate a5i are fixed to flanges formed at the rear ends of the upper and lower surfaces of the outer box (1).

The rear wall (8) of the rotating drum (6) is provided with a plurality of air discharge holes, and the air is connected to the drum + via the discharge holes (221).
A rear duct @ communicating with the inside of the support plate [15+
is fixed. The discharge hole ■ is a filter net Ci! 41
The filter cover (c), which is easily removable, is outstanding.

The problem is the sealing member that prevents air leakage between the rear wall (8) of the drum (6) and the rear wall (8) of the drum (6).

The outlet of the rear duct ◎ is the connecting pipe (281″f
t: Through the suction duct of the circulation fan casing (30
) is not connected. Inside this fan casing (29) is a circulation fan consisting of a centrifugal fan as shown in Figure 6.
1 is provided. This fan (311 is a small pulley 3 fixed to its shaft) is rotated by a belt 1' 341VC connected to a large pulley (371) fixed between the shafts of a motor (3G). ) axis (
A small pulley is also fixed on 3Q, and this small pulley (3
By winding a belt bell 9) between the mark and the outer periphery of the drum (6), the drum (6) is also rotated at a low speed. In Figure 2, (4 (2) is a bell) and (39) is an idler pulley that adjusts the tension.

The discharge duct (Ill) of the circulation fan casing (branch) is communicated with one end side of a large number of pipes □□□ of the dehumidifier 14. The dehumidifier consists of a large number of pipes (431) and a large number of cooling fans (4) connected to these pipes.

In Fig. 6, t451 is a cooling fan, which is provided inside the cooling fan casing f4f31, and this casing (46)
The suction duct (a) η is connected to the outside air intake port 14~ opened on the top surface of the outer box (1), and is connected to the upper end surface of the discharge duct (49+ is the cooling) (n). Cooling The cooling fan θ is fixed to the shaft (c) of the circulation fan 1311. As the cooling fan (45) rotates, the filter 1 is opened as shown by the dotted arrow in FIG. The outside air is sucked in from the inlet and sent to the cooling fins, which cools the moist warm air passing through the pipe and condenses the moisture contained in it. A cooling air path is formed by exiting from a large number of exhaust holes 1).At the other end of the large number of vibrators, there is a front duct H
One end of 21 is disconnected, and the condensed water is drained out of the machine through the drain hose β3 connected to the bottom of this front duct) ([i2).

The other end of the front duct) 0521 is connected to the drum support plate 111.
) Connect this to the drum support plate (full front duct)
A large number of air intake holes (l'i4) communicating with the inside of the +521 hardness drum (6) are provided. Also, a heater f5Fil is installed inside the duct.

Then, when the heater (egg) is energized and the motor CI'il is rotated, the m circulation fan cll+ and the cooling fan (
45I and the drum (6) rotate, and the air enters the drum (6) from the intake hole (54) as shown by the solid line arrow in Figures 6 and 4.
Heated air is supplied to the drum (551) to evaporate moisture from the clothes in the drum, and this high temperature and humid air is
The filter power converter and the discharge hole (d full valve and rear duct) (completely discharged into 23+, front duct) (from 231 through the connecting pipe (28)? to the numerous pipes of the dehumidifier hz)
Here, it is cooled and the water contained therein is condensed, and then it is sent to the front duct (521'i) and sent to the heater (551) where it is heated again and is heated again through the air intake hole (521'i).
54) Repeat the cycle of feeding every drum (6). Solid arrows represent circulation air paths.

In the discharge chamber (t411) of the circulation fan casing (29), there is a first heat-sensitive element (t411) for measuring the temperature of the air before passing through the dehumidifier in the circulation air path, that is, the temperature at the drum outlet. 5.Here, a thermistor is used as a heat sensitive element. Also, below the dehumidifier (42) of the cooling air path, the temperature history after passing through the dehumidifier, that is, the dehumidification A second heat sensitive element (571), also made of a thermistor, is provided to measure the outlet temperature.

Next, the control path (b) will be explained based on Fig. 5.
) is the power on switch, 鵠9) is the first door switch, G
After turning it into a rectangular wave pulse using the 61-way analysis, this pulse is applied to a microcomputer and used for time counting. (63) is a clock oscillation circuit, and 0 is an initial reset circuit that generates pulses used to advance the program in the microcomputer (621).
When the power supply switch is pressed, this initial reset circuit is activated and the program in the microcomputer is set to its initial state. (The surface shows the thermistor as the first heat-sensitive element, and 1571 shows the thermistor as the second heat-sensitive element. Each thermistor is connected in series with a resistor (6fF), and the partial pressure value of each is connected to the normal pressure comparator. In addition, the output signal of the microcomputer (a ladder circuit (a) that generates a staircase wave by receiving the output from the ef) is input to the other input terminal of each field pressure comparator. This ladder circuit 1 circuit is connected to the microcomputer (output terminal 621 + 7) (a)... (as the signals are sequentially output from each output terminal, the ladder circuit 189 When the output voltage changes in a stepwise manner and the voltage comparator 113'n (68) conducts and there is an input to the microcomputer (62), it is output to the output terminal (
7) (A)... (The microcomputer itself determines which terminal of G the signal is output from, and knows the drum exit temperature of the circulation air path and the dehumidifier exit temperature of the cooling air path. It looks like this.

V0) is the second door switch for determining whether the clothes loading door is closed, power) is the 50/60Hz changeover switch, and (7■ is the start switch for starting the drying operation. (73I) is the first relay winding, and when the start switch ff2'e is pressed, an output signal from the microcomputer (62) causes current to flow through the first relay winding through the transistor, and the first relay contact ( 7R1'Ik is closed to energize the motor 06. Also, 41 is the second relay winding, and (a) is a light emitting diode for displaying the drying operation. The signal energizes the light emitting diode (C) through the transistor, lights it up to indicate that the drying process is in progress, and also connects the second relay winding (741) to the second relay contact 4. ) is closed, and the heater (6) is energized through the first door switch 09), etc.

Inside is a buzzer for indicating the end of operation, and η is a light emitting diode for indicating cold air operation that lights up during cold air operation after hot air operation is completed. The V-sha is a light emitting diode that lights up during intermittent cold air operation to prevent wrinkles after the cold air operation has ended. 179) is a power plug.

What is the operation in the above configuration? explain. When the power-on switch is pressed, W current is applied to the microcomputer (62) through the DC converter circuit (6), and the initial clear circuit (641) is activated to return all programs in the microcomputer to their initial state. The program is sequentially advanced by the signals from the clock oscillation 1i11++ (63), but first the thermistor (50) which is the first heat-sensitive element, the second heat-sensitive element (2-mister 50), and the ladder circuit (E), Voltage comparator (e7i (6s+) [Therefore, the drum outlet lag and dehumidifier outlet temperature are measured at 1 second intervals, and the values are stored in the RAM in the microcomputer (62).
(read/write memory) [^e, memorize 0 start switch (Press J'Af, if the door for loading clothes (3) is closed, the first and second door switches (591901 are closed, and the second The microcomputer (@f2) detects that the door switch is closed, outputs an output current to the first relay winding V3', closes the first relay capacitor V31, and switches the spacecraft to the seventh terminal (36j). At the same time as rotating the drum (6) and #g fan (311 (4),
An output current is also output to the relay winding i41, the second relay connection 4) is closed, the heater 11 is traced, and the drying operation is started. In addition, the microcomputer (1) counts the number of pulses that convert the power AC wave into a rectangular wave by the waveform shaping circuit (1) to count the total operating time. This counting is done by using a specific address in the RAM as a time counter, and the time counted and stored here is updated every minute.

By the way, the difference between the drum outlet temperature and the dehumidifier outlet temperature measured by the first and second heat sensitive elements i%+ (571) changes approximately as shown in FIG. 6 during the drying operation. That is, for a while after the start of the drying operation. During this period, the difference between the two temperatures increases, but when a certain temperature difference (A) is reached, it reaches a steady state where it hardly changes.After this steady state continues, the difference between the two temperatures increases again. However, the drying rate at this time is approximately 80%.Therefore, in the sixth factor, the difference in temperature between the two above is (A + B), (where B is an arbitrary positive number added in advance)
If the drying operation is stopped when the drying rate is reached, the operation can be completed with a drying rate of about 90%.

In addition, the time (T
1) is determined by experimenting with various loads, which vary slightly depending on the load amount and dehydration rate, and then comparing the longest time with the above time (TI) and 1.
2. At that time, the temperature difference between the two above may be referred to as the temperature difference (A+).However, since the steady state is quite long, the time (T1) may be set to be long enough.

As a result of repeated various experiments, it was found that in the case of abnormal load, a steady state is reached after 15 minutes have passed after the start of operation. So, when 15 minutes have passed after the start of operation, take out the temperature at the drum outlet and the dehumidifier outlet, which had been constantly updated and stored in the RAM, and calculate the difference between them. The value is stored as a reference value (A) in another address of the RAM.Then, the difference between the two measurements is (A+5)f
When this happens, the drying operation is completed (B is set at 5°C for the case where the tree is laid on its side) and the transition to cold air operation (heater (cut 60 degrees and blow only the air to all clothes) is started. At the beginning of operation. Even if 150 minutes have passed since the drying operation is continued, the system will switch to the cold @renten mode. This is to protect the temperature detection thermistor (561F571, etc.) from failure.

After the drying operation ends and the transition to cold air operation occurs, if the drum outlet temperature falls below 40°C or if the cold air operation continues for 10 minutes, the first relay contact (73) will be opened and the motor @ will be stopped. to end cold air operation.

When the cold air operation is finished, a complete stoppage period of 5 minutes begins, and after this pause time, the VC motor is driven for 10 seconds to perform the cold air operation for preventing wrinkles.

That is, this cold ffl operation lowers the temperature of the clothing over the entire history, and also causes the clothing to be heated, wrinkled, and wrinkled. It's suppressed. This short-time cold air operation for preventing wrinkles is performed intermittently with a 5-minute rest period in between, and this wrinkle prevention operation is performed for a maximum of 120 minutes after the end of the previous cold air operation, and then ends. During this wrinkle prevention 1-hi operation, the light emitting diode ffl! i is displayed, and if the user notices this and wants to take out the clothes, open the door (3) and take them out. If the door (3) is opened once during this operation, this operation is forcibly terminated.

In the above embodiment, when the temperature difference between the drum outlet temperature and the dehumidifier outlet temperature reaches (A-)B), the dry record compliance is stopped and the cold air operation is started. The difference is (A
+B) The drying operation may be continued for an extended period of time set by a drying rate adjustment timer VCx after the temperature reaches +B).

In the above embodiment, the temperature before entering the dehumidifier in the circulation air path, that is, the drum outlet temperature, and the temperature of the cooling air passing through the dehumidifier in the path, f
We measured the difference from the temperature after passing through the dehumidifier in the cooling air path, but instead of the temperature after passing through the dehumidifier in the cooling air path, we installed η of the second heat-sensitive element at the position of the 6th factor dashed line. It may also be used by measuring the temperature. In other words, the difference is that the difference shows a similar change. However, the temperature difference before and after the dehumidifier in the circulating air path is smaller than the temperature difference described above.

(F) Effects of the Invention The present invention can provide an extremely convenient clothes dryer that can suppress wrinkles and damage to clothes even if they are left unattended.

[Brief explanation of the drawing]

The drawings show the present invention, the first cause is a front view of the clothes dryer, the second figure shows the inside of the same back side with the back plate removed, and the third figure shows the line III-III of the first part. In the cross section based on the lines 1 and 2, the fifth part is a control circuit diagram, the sixth factor is a dynamic curve diagram of the temperature difference between the drum outlet temperature and the dehumidifier outlet temperature, and FIG. 7 is a flowchart. (61...drum (drying room), store...motor, (
55I... Heater, (561... First heat sensitive element, (
Fi7j...second thermal element, @21...microcomputer. JP-A Show GO-100999 (7) Fig. 7 ↑ Atsukigakure ON AQ Musu left inspection (degree 77 8 Mosuite input Fig. 6

Claims (1)

[Claims] (1) It consists of a rotating drum that serves as a drying chamber, a heater that produces hot air, and a fan that supplies this y/1AlitiI or cold ffl to the rotating drum. Cold air operation is performed by shutting off the air,
After this cold wind operation? A clothes drying IM characterized by comprising a plurality of cold air operations that are executed for a short period of time in between.