JPH0747079B2 - Clothes dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention provides a dry wind in which a door provided with a see-through window is arranged at the clothes entrance of a rotating drum, and the rotating rotating drum is heated by a heater. The present invention relates to a clothes dryer that performs a drying operation of supplying the clothes in a state in which the clothes in the drum are visible.

(B) Conventional technology This type of clothes dryer allows you to see clothes that are being picked up in a rotating drum from a see-through window, but when the drum is stopped and the door is opened, it is located at the bottom of the drum. Depending on the position of the eyes, it is difficult to find the clothes to be worn, and in the end, it may be forgotten to take them out after drying.

Therefore, in order to prevent forgetting to take it out, for example,
The structure shown in Japanese Patent No. 19386 has been proposed. This is to provide a mirror on the rear surface of the inside of the drum, which mirrors the lower part of the inside of the drum, and use this mirror to find clothes that have not been taken out from the outside.

However, this product cannot reliably show the clothes in the drum due to the area of the mirror, the mounting angle, etc. Therefore, if the area of the mirror is increased, it will be expensive and the flow of dry air will be impaired. .

(C) Problems to be Solved by the Invention The present invention is to make it possible to easily confirm the remaining clothes after taking out the dried clothes from the rotary drum.

(D) Means for Solving the Problems In the present invention, a door provided with a see-through window is arranged at a clothes entrance of a rotating drum, and a rotating drum rotating in a state in which the clothes therein are visible is heated by a heater. In the clothes dryer which performs the dry operation by supplying the dried air, the door open / close detection means for detecting the open / closed state of the door and outputting the open / close signal, and the start for starting the dry operation Start switch means for outputting a signal, end detection means for outputting an end detection signal for ending the drying operation by detecting the drying operation time or the drying air temperature, and confirmation for confirming the clothes in the rotary drum Confirmation switch means for outputting a signal,
By the arrival of both the door closing signal from the door opening / closing detection means and the start signal from the start switch means, the rotating drum and the heater are controlled to execute the drying operation, and during the drying operation, The operation control means for ending the drying operation upon the arrival of the drying end signal to stop the rotating drum and the heater, the informing means for informing the end of the drying operation when the rotating drum and the heater are stopped, and the informing means After the door opening signal from the door opening and closing detection means after notification, until the start signal from the start switch means again arrives, the confirmation signal from the confirmation switch means arrives, Second operation control means for rotating the rotary drum for a predetermined time while the heater is stopped is provided.

(E) Action When the drying operation is completed and the clothes can be taken out, the notification means notifies. After this, when the confirmation switch means operates and the confirmation signal arrives between the arrival of the door open signal notifying that the door has been opened and the start switch means operating for the next drying operation, 2 The operation control means rotates only the rotary drum for about 0.5 to 2 seconds to obtain about 1
Rotate.

As a result, if the clothes remain in the rotating drum, the clothes are scraped up and viewed by the user. Even if the door is closed, it is visible through the transparent window.

(F) Example The structure will be described with reference to FIG. 2. (1) is a machine frame of a clothes dryer, and a front plate (2) made of resin and a rear plate (3) made of metal are provided at the front and rear opening edges. It is fastened. (4) is a clothing doorway formed on the front plate (2) on which various manual operation keys are arranged, and (5) is a door for opening and closing the doorway,
(6) is a metal-made annular drum supporting board located at the front part of the machine frame (1) and fixed to the machine frame (1) and the front plate (2), and (7) is the machine frame (1 ) Is a partition plate made of metal arranged in the rear part. Here, the partition plate (7) is installed and fixed on both sides of the machine frame (1), and has a plurality of ventilation holes (8) ...

(9) is a long support shaft which is inserted through the central portion of the partition plate (7) from the front-rear direction and fixed, and the rear end of which is the rear plate (3).
It is fixed to the boss (10) at the center of the.

(11) is a horizontal shaft type drum which is a resin-molded drying chamber, and the front opening edge is rotatably fitted to the outer peripheral edge of the drum supporting plate (6) via a felt. Reference numeral (12) is a see-through window provided on the door (5) so that the inside of the drum (11) can be viewed. This drum (11) has a bearing (1
3) is fixed, and this is rotatably inserted and fixed to the front end of the support shaft (9) to prevent it from coming off. Furthermore, this drum (11)
The rear surface has a hot air outlet (14) consisting of a large number of through holes or radial slits.

Reference numeral (15) is a sealing member fixed to the rear surface of the drum, and is in sliding contact with the front surface of the partition plate (7).

(16) is a circulation passage that connects the hot air inlet (17) formed on the lower left side of the drum support board (6) to the ventilation port (8) of the partition plate (7) from the rear side of the plate. Honeycomb-shaped heater (18) consisting of a positive temperature coefficient thermistor facing the 17)
(18) is provided, and an L-shaped duct (19) fixed to the drum support plate (6) and a cylindrical circulation casing (airtightly covered and fixed to the rear surface of the partition plate (7) ( 20) and. The circulation casing (20) is a resin molded product, and the circulation pipe (21) facing downward is integrally formed, and the circulation casing (20) is connected to the duct (1).
9) Connected and communicated with the inner bottom of the machine casing (1) and the duct (1
The bottom of the 9) has a drain hole (22) protruding outside the machine.

(23) is a resin-made cooling casing of substantially the same shape, which is fixed to the rear side of the circulation casing (20) so as to be continuous with it. The circulation pipe (21) and a downward exhaust pipe (24) are formed integrally with the cooling casing. However, it communicates with the exhaust port (25) on the bottom of the machine casing (1). The rear part of the cooling casing (23) and the exhaust pipe (24) is covered by the rear plate (3).

(26) is a circulation casing (20) and a cooling casing (2
3) A heat exchange type double-sided fan which is arranged so as to straddle inside, and is rotatably supported by a metal behind the support shaft (9). Reference numeral (27) is a rotation transmission pulley connected to the fan (26).

(28) is a motor arranged on the inner bottom of the machine frame (1), which rotates the drum (11) by a pulley and a belt including an idler pulley, and at the same time, the pulley and the fan (26).
To rotate through the belt.

Reference numerals (29) ... Intake ports radially formed in the rear face plate (3), and (30) a cover bulgingly formed on the rear face plate (3) to cover a portion where the belt is stretched.

Reference numeral (31) is a filter device mounted from the inside so as to cover the hot air outlet (14) on the rear surface of the drum (11).

(32) is a first temperature center which is located on the back surface of the partition plate (7) and which consists of a thermistor for detecting the temperature of the dry air after drying from the drum, and (33) is located in the duct (29). The second temperature center is a thermistor that detects the temperature of the dry air after heat exchange and dehumidification.

Next, the circuit configuration will be described with reference to FIG. 1. (34) is a microcomputer (hereinafter referred to as a microcomputer) as operation control means and second operation control means, (35) is a power switch, and (36) is direct current. (37) is a waveform shaping circuit for applying a pulse for time counting to the microcomputer (34),
(39) is a clock for advancing a program in the microcomputer (34), and (39) is a reset circuit for resetting the microcomputer (34) when the power is turned on. (40) is a door open / close detection means including a switch or the like for outputting either one of a door open signal and a door close signal to the microcomputer (34) in response to the open / closed state of the door (5), and (41) is a microcomputer ( Start switch means consisting of a manual operation key for outputting a start signal for starting the drying operation to (34), (42) a confirmation signal for confirming the residual clothes in the rotating drum (11) by the microcomputer (34) Confirmation switch means consisting of a manual operation key to output to
Reference numeral (43) is a buzzer which notifies it by the output from the microcomputer (34) at the end of all the operations. (14) is another key input unit such as a stop key for stopping or stopping the operation.

The heaters (18) (18) and the motor (28) are connected to the power source through the triacs (45) (46) (47), and the triacs (45) (46) (47) are connected to the microcomputer (34). ON-OFF by the gate signal from. In particular,
By controlling the gate signal of the microcomputer (34) to the triac (46) by the switching signal from the manual switching key (48), the heating capacity of the heaters (18) (18) can be switched between strong and weak. .

Thus, during the drying operation, power is supplied to the motor (28) and the heaters (18) (18), the fan (26) and the drum (11).
To rotate. The dry air heated by the heaters (18) (18) is heated by the hot air inlet (17) -drum (11) -filter device (31) -hot air outlet (14) -vent (8) -fan (26).
-Circulation casing (20) -Circulation pipe (21) -Duct (19)
-The clothes in the drum (11) are dried by circulating the heater (18) (18) in that order. On the other hand, the outside air flows in the order of intake port (29) -cooling casing (23) -fan (26) -cooling pipe (24) -exhaust port (25). If the changeover key (48) is operated, only one heater is turned off to perform weak drying. And
Heat is exchanged between the front and rear of the fan (26), and the dry air discharges the moisture from the clothes in the duct (19) and discharges it from the drain hole (22) as a drain to reduce the humidity. Circulate.

The control by the microcomputer (34) at the time of such an operation and the whole operation will be explained based on FIG. 3 (a). First, after the power switch (35) is turned on, the arrival of the start signal and the arrival of the closing signal. Determine. When the arrival is determined, the microcomputer (34) turns on the heaters (18) (18) and the triacs (45) (46) (47) of the motor (28) by a gate signal. Of course, if the switch key (48) is operated, the heater (1
One of 8) is turned off. Each temperature sensor (32) (33)
Output voltage is compared with the ladder output of the ladder circuit (49) by the comparators (50) (51), and the microcomputer (34) reads the temperature signal by itself by this comparison output. Each temperature sensor (32) (33) is an end detection means that outputs an end detection signal of the drying operation to the microcomputer (34), and the temperature difference after a predetermined time from the start of operation is used as a basic value to the microcomputer (34). Remember. The microcomputer (34) starts counting a predetermined time when each sensor (32) (33) outputs a temperature difference higher than this value as a termination detection signal, and turns off the heaters (18) (18) when the time elapses. Then, the drying operation is ended.

When the dry operation is completed, the operation continues to the cold air operation for about 5 minutes, and after the elapse of this cold air operation time, the microcomputer (34)
Or watch the door (5) open and the door open signal arrives in the process. And in each case the motor (28)
Is turned off and the buzzer (43) is activated to notify the end.
The microcomputer (34) sees that the confirmation signal comes next from the confirmation switch means (42) due to the arrival of the door open signal after the arrival of the end detection signal.

The user takes out the dried clothes from the rotating drum (11), and confirms the switch (4) regardless of whether the door (5) is opened or closed.
When you operate 2) to output a confirmation signal, the microcomputer (3
4) energizes the motor (28) for 0.5 to 2 seconds to rotate the rotating drum (11) about one revolution. Then, if clothes are left in the drum (11), the clothes can be scraped up by the baffle of the drum (11) so that the user can visually check it. When the door is closed, it can be visually confirmed through the transparent window (12). After the completion of one drying operation, the remaining clothes can be confirmed until the start signal is output by the operation of the start switch means (41) for the next operation.

FIG. 3B is a flow chart for explaining the operation of another embodiment, in which the manual key of the confirmation switch means (42) is omitted and the confirmation signal is also used as the closing signal. That is,
When the removal of the clothes is completed and the door (5) is closed after arrival of the end detection signal and the door open signal, the rotating drum (11) automatically makes about one revolution by the door closing signal to confirm the remaining clothes. .

The flow chart of Fig. 3 (c) shows the operation of performing the confirmation work under the condition that the door (5) is opened for taking out the clothes and the manual key of the confirmation switch means (42) is omitted. There is. Here, when one of the manual key of the start switch means (41) and the changeover key (48) is operated after the end detection signal and the door opening signal are sequentially discriminated, the start signal and the changeover signal are confirmed. Is also used for. Further, in the embodiment shown in FIG. 3C, if it is considered dangerous to rotate the drum (11) with the door (5) opened,
In this open state, a confirmation signal is output when a plurality of various manual keys are operated sequentially or simultaneously. For example, when the manual key and the changeover key (48) of the start switch means (41) are simultaneously operated, the rotary drum (11) is rotated about once.

Although this embodiment is a circulation type clothes dryer using a dehumidifier, there is no difficulty in applying it to a normal open type clothes dryer.

(G) Effect of the Invention According to the configuration of the present invention, from the time when the user finishes drying and the clothes can be taken out and the user opens the door to take out the clothes until the next drying operation is started. When the confirmation signal comes in, the rotating drum is rotated for a predetermined time. Therefore, when the clothes are taken out after drying and the clothes are taken out, use the mirror etc. for the clothes left in the rotating drum. It is easy to check, and you can take out all the dried clothes without leaving behind.

Moreover, since the start switch means provided separately from the start switch means for starting the drying operation rotates only the rotary drum without starting the drying operation, useless electric power of the heater is not used. .

[Brief description of drawings]

FIG. 1 is a control circuit diagram of a clothes dryer according to the present invention, FIG. 2 is a side sectional view, and FIGS. 3 (a), (b), and (c) are flow charts for explaining each operation of the three embodiments. Is. (4) ... Clothes doorway, (5) ... door, (11) ... rotating drum, (12) ... transparent window, (18) ... heater, (28) ... motor, (32) (33) ... temperature sensor, ( 34)… Microcomputer,
(40) ... Door opening / closing detection means, (41) ... Start switch means,
(42) ... Confirmation switch means, (48) ... Selection key.

Claims (2)

[Claims] 1. A drying operation in which a door provided with a see-through window is provided at a clothes entrance of a rotary drum, and dry air heated by a heater is supplied to the rotary drum that rotates while the clothes inside are visible. In the clothes dryer for carrying out the above, a door opening / closing detecting means for detecting an open / closed state of the door and outputting a door opening signal or a closing signal, start switch means for outputting a start signal for starting the drying operation, and drying An end detection means for outputting an end detection signal for ending the drying operation by detecting the operating time or the drying air temperature, a confirmation switch means for outputting a confirmation signal for confirming the clothes in the rotating drum, Upon arrival of both the door closing signal from the door opening / closing detection means and the start signal from the start switch means, the rotary drum and the heater are controlled to execute the drying operation, An operation control means for ending the drying operation and stopping the rotating drum and the heater upon arrival of the drying end signal during the drying operation, and an informing means for informing the end of the drying operation when the rotating drum and the heater are stopped. ,
The confirmation signal from the confirmation switch means from the arrival of the door opening signal from the door opening / closing detection means after the notification by the notification means to the arrival of the start signal from the start switch means again. And a second operation control means for rotating the rotary drum for a predetermined time when the heater is stopped, the clothes dryer. 2. The clothes dryer according to claim 1, wherein the predetermined time is a time for rotating the rotary drum about one rotation.