JPH02220696A - Dryer - Google Patents

Abstract

PURPOSE:To prevent a dryer from being brought into operation with a drum cover open by a method wherein a shield member is mounted so as to shield a to-be-detected element when the drum cover is in such a state that it closes an opening of a drum, and the open or clos state of the drum cover is judged according to the detected signal of a detection means. CONSTITUTION:After start-up of operation, the open or close state of a drum cover 21 is judged according to detected signal of a drum cover position detection means 31, and a buzzer, for example, is sounded and the operation is stopped when the drum cover 21 is in open state, so that a dryer is prevented from being brought in operation with the drum cover 21 open. Especially in this case, as a lead switch 29 is arranged on a main body 20 so that it is a little apart toward the rotating direction side from the position of the to-be- detected element when the drum cover 21 is in full open state at the drum stop position, the open state of the drum cover 21 is judged immediately after operation starts in case the drum cover 21 is in full open state. On the other hand, the open state of the drum cover is judged when the drum 16 is turned a little after operation starts in case the opening degree of the drum cover 21 is a little.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a dryer having an inlet/outlet for drying material on the upper surface of the main body.

(Prior Art) Dryers are generally provided with a box-shaped main body, and an entrance/exit for clothes to be dried is provided in the front part of the main body.

If such a structure was installed directly on the floor, the position of the entrance for clothing would be low, making it difficult to put in and take out clothing, making it inconvenient to use. On the other hand, the dryer with the above structure is installed in a relatively high position, such as above the washing machine, by using a special stand. I don't like the position to be too high, but the usability is good enough (
There wasn't.

Therefore, a so-called top-loading type dryer has been considered as a dryer that can provide good usability even when installed on the floor, and has an opening for entering and exiting clothes on the upper surface of the main body.

(Problems to be Solved by the Invention) In the top-loading type dryer having the conventional structure described above, a drum is rotatably provided inside the main body, an opening corresponding to the entrance and exit for clothes is provided in the body of the drum, and ,
The drum is provided with a drum lid that opens and closes the opening of the drum and is slidable in the circumferential direction. In this case, if you forget to close the drum lid or close it insufficiently and start the drying operation and rotate the drum, the clothes inside the drum will fall into the opening when the opening of the drum is at the bottom. There was a problem that it could fall through the body and into the inside of the main body.

In this case, in order to retrieve the fallen clothing, it was necessary to partially disassemble the main body, etc., which required troublesome work.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a dryer that can prevent drying operation from being performed with the drum lid open.

[Structure of the Invention] (Means for Solving the Problems) The dryer of the present invention includes an inlet/outlet for drying material on the upper surface of the main body, and a rotatably provided inside of the main body and the inlet/outlet and the inlet/outlet in the body. A drum having a corresponding opening is provided, a drum lid is provided on the drum so as to be movable in a circumferential direction and opens and closes the opening, and the drum is stopped so that the opening faces the entrance/exit of the main body. The drum cover is opened in the same direction as the rotating direction of the drum during normal operation, and when the detected element is located between the detected element, the detection element, and the pixel element, the detected element is a detecting means made of a shielding member that shields the drum to an undetectable state, the detected element is provided on the drum lid, and the detected element is mounted on the main body when the drum lid is fully open at the drum stop position. , the shielding member is provided on the drum so as to shield the detected element with the drum lid closing the opening, and the detecting means The present invention is characterized in that the open/closed state of the drum lid is determined based on the detection output of the drum lid.

(Function) According to the above means, after the start of operation, it is possible to determine the open/closed state of the drum lid based on the detection output of the detection means. Therefore, it is possible to prevent the drying operation from being performed with the drum lid open. Particularly in this case, the detection element is disposed on the main body so as to be slightly disposed in the rotational direction by a distance MIllll relative to the detected element when the drum lid is fully open at the drum stop position, so the drum lid is fully open. When the drum lid is opened, the open state of the drum lid can be determined immediately after the start of operation.On the other hand, when the amount of opening of the drum lid is small, the open state of the drum lid can be determined after the drum has rotated a little after the start of operation. The open state can be determined when the opening is almost upward. Therefore, if the drum is stopped after determining the open state of the drum lid, the drum will stop with the opening facing upward, regardless of the amount of opening of the drum lid, and the material to be dried inside the drum will pass through the opening. This prevents it from falling into the main body.

(Example) An example of the present invention will be described below with reference to the drawings.

First, in FIG. 2, reference numeral 1 denotes an outer box, which is composed of an outer box main part 2 and a cover 3 that closes a rear opening of the outer box main part 2. The main part 2 of the outer box is the upper cover part 4.
and a body portion 5 having a substantially U-shaped cross section. As shown in FIG. 3, the upper cover portion 4 has an opening 4a for storing items to be dried, such as clothing.

Further, the upper cover portion 4 is provided with a lid 6 for opening and closing the entrance/exit 4a, and is also provided with an operation panel 7 shown in FIG. 4. Now, A shown in Fig. 1 is a unit covered by the above-mentioned outer box 1, and hereinafter this unit A is
Let's talk about.

In FIG. 1, 8 is a plywood made of plastic, for example, and 9 is a motor fixed to the base plate 8 via a motor support 10. One support plate 11 is erected at the rear end of the base plate 8 by screws. Further, at the front end of the base plate 8, the other support plate 12 is erected by screws so as to face the support plate 11. 13 is a casing, which has its front and rear lower ends supported by support plates 11.1;
The support arms 11a and 12a protrude from the support arms 11a and 12a, respectively, and are supported by screws. A fan 14 having, for example, a double-blade shape is rotatably disposed in the casing 13 . Reference numeral 15 denotes a drum support member, whose front and rear lower ends are respectively screwed and supported by support arms 11b (only one of which is shown) projecting from the support plate 11, 12.

Reference numeral 16 denotes a drum for storing the material to be dried, which has a shaft portion 17 provided at the center of the right side surface in FIG. is rotatably provided between the drum support member 15 and the casing 13 by being supported by the drum support member 15 via a bearing 19 . In this case, the outer box 11 base plate 8. Support plates 11, 12. A main body 20 is composed of a casing 13, a drum support member 15, etc.
The drum 16 is rotatably provided inside the main body 20. Further, the main body 20 is provided with the entrance/exit 4a on the upper surface thereof. Now, an opening 16a (see FIG. 3) that corresponds to and has the same size as the entrance 4a is formed in the body of the drum 16.
The drum lid 21 is movable, for example slidable, in the circumferential direction so as to open and close the drum lid 6a (see Fig. 1).
. Here, the opening direction of the drum lid 21 is set to be the same direction as the normal rotation direction of the drum 16 (indicated by left end B in FIG. 1). Reference numeral 22 denotes a presser member that slidably presses the drum 1A21, and this is attached to the body of the drum 16.

Further, as shown in FIG. 1, a mounting member 23 is protruded from the upper end of the drum support member 15 so as to face the body of the drum 16. Reference numeral 24 indicates, for example, a reed switch disposed on the back surface of the mounting portion 23 so as to face the holding member 22 of the drum 16, and 25 indicates this reed switch 24.
It is a magnet attached to the holding member 22 so as to form a pair with the reed switch 24 and the magnet 2.
5 constitutes a stop position detection means 26.

This stop position detection means 26 outputs an on signal as a detection output when the entrance/exit 4a and opening 16a match, and outputs an off signal at other times.

Reference numeral 27 denotes an element to be detected, such as a magnet, which is attached to the upper left corner of the drum lid 21 in FIG. Further, a mounting member 28 is provided protruding from the left end portion of the drum support member 15 in FIG. 1 so as to face the body portion of the drum 16.

29 is a detection element, for example a reed switch, which is attached to the back side of the mounting member 28, and is attached to the drum 1.
6 rotates and the above drum! ! The magnets 27 of 21 are arranged to face each other when they come close to each other. here,
The two reed switches operate when the drum lid 21 is fully open when the entrance/exit port 4a and the opening 16a of the drum 16 meet, that is, when the drum 16 is at the stop position, as shown in FIG. 8(a). The magnet 27 is disposed at a slight distance away from the magnet 27 in the direction of rotation of the drum 16 as indicated by arrow B in the figure. Reference numeral 30 denotes a shielding member, for example, a shielding plate made of stainless steel that shields magnetism, which is attached to the pressing member 22 of the drum 16, and is provided so as to cover the magnet 27 with the drum M21 closing the opening 16a. When located between the magnet 27 and the reed switch 29, the magnet 27 is shielded from detection. And these magnets 27. The reed switch 29 and the shielding plate 30 constitute a detecting means, for example, a drum lid opening/closing detecting means 31. Therefore, this drum lid opening/closing detection means 3
1 outputs an on signal as a detection output when the drum lid 21 is open and the drum 16 rotates and the magnet 27 approaches the reed switch 29, and otherwise outputs an off signal. It looks like this.

Further, in the casing 13, when the fan 14 rotates, as shown in FIG. 3, the warm air inside the drum 16 is sucked into the left side portion of the fan 14 in the figure through the filter set 32 and the intake port (not shown). After being guided to the casing cover 33 shown in FIG. brought back inside. At the same time, air outside the outer box 1 is sucked into the right side portion of the fan 14 in FIG. 3 from the outside air intake port 3a of the cover 3 (see FIG. 2) through the intake cover 38, and the air is drawn into the right side of the fan 14 in FIG. 1
After exchanging heat with the air from the drum 16 flowing on the left side of FIG. The air from the drum 16 is dehumidified by the heat exchange, and the water generated by the dehumidification is discharged to the outside from the drain hole 34a provided at the bottom of the connecting duct 34 and the drain hole 8b of the base plate 8. There is. A belt 41 for driving the drum is passed between a boo 939 attached to the rotating shaft of the motor 9, two tension pulleys 40, 40, and the drum 16, and the motor 9 drives the drum 16. is designed to be driven in forward and reverse rotation. A belt 44 for driving the fan is passed between a pulley 42 attached to the rotating shaft of the motor 9 and a pulley 43 of the fan 14.
is designed to be rotationally driven. Furthermore, in FIG. 3, 45 is the drum support member 1 facing inside the drum 16.
5, which outputs an electrical signal according to the resistance of the cloth.

On the other hand, in FIG. 4 showing the operation panel 7, 46 is a start switch that also serves as a temporary stop switch, 47 is a heater changeover switch, 48 is a power switch, and 49 to 51 are indicator lamps made of light emitting diodes and the like.

Further, in FIG. 5 showing the electrical configuration, 52 is an operation control circuit for controlling the drying operation, and this is configured to include a microcomputer.

The operation control circuit 52 receives switch signals from the start switch 46 and changeover switch 47, as well as detection signals from the stop position detection means 26 and the drum lid opening/closing detection means 31. 53 is a clock pulse generation circuit which provides a clock pulse to the operation control circuit 52; 54 is a dryness detection circuit which detects the dryness of the object to be dried based on the electric signal given from the electrode 45; When the dryness detection value reaches a predetermined value, a dryness determination signal is given to the operation control circuit 52. 55 is a drive circuit for driving the motor 9 and heater 37;
56 is a rectifier circuit that applies a DC power supply voltage to the operation control circuit 52, 57 is a lid open/close detection switch that detects the open/closed state of M6, and 58 is a buzzer for notifying abnormal characters.

Next, the operation of the above structure will be explained with reference also to FIGS. 6 to 8.

FIG. 6 shows the contents of a portion of the control program stored in the operation control circuit 52 that determines whether the drum lid 21 is opened or closed. In FIG. 6, when the drying operation start switch 46 is operated (proceeds to rYEsJ in step S1), the drying operation is started and the motor 9 and heater 37 are driven (step S2). As a result, the drum 16 begins to rotate in the normal operating direction B (see FIG. 1). Here, the open/close state of the drum lid 2 is determined based on the detection signal from the drum lid opening/closing detection means 31 (
Step S3). In this case, the drum lid 21 is attached to the drum 16.
When the opening 16a is closed, the shielding plate 30 shields the magnet 27, so even if the drum 16 rotates and the magnet 27 approaches the reed switch 29, the shielding plate 30 will close the magnet 27 and the reed switch. 29, the magnet 27 becomes undetectable, and no on signal is output from the drum lid opening/closing detection means 31.

Therefore, the drying operation is continued (proceed to "NO" in step S3). On the other hand, Fig. 7(a) and Fig. 8(a)
), when the drum 'jji 21 is insufficiently closed or when the drum lid 21 is open, the shielding plate 30 does not shield the magnet 27, so the drum 1
6 rotates in the direction of arrow B and the magnet 27 approaches the reed switch 29 (Fig. 7(b) and Fig. 8(b)).
), the reed switch 29 detects the magnet 27, and the drum lid opening/closing detection means 31 outputs an on signal. Therefore, the open state of the drum lid 21 is determined (proceeds to "YESJ" in step S3), and the motor 9 is electromagnetically braked for, for example, 1.5 seconds to stop the drum 16 (step S4). After this, the motor 9 is reversed. In this case, the motor 9 is turned on for, for example, Oo 06 seconds, and 0.
The drum 16 is reversed at a minute speed (a speed at which the drum 16 immediately stops when the motor 9 is electromagnetically braked) by repeating the power-off control in which the power is turned off for one second (step S5). and,
When the drum 16 is reversed to a position where the inlet/outlet 4a of the material to be dried and the opening 16a of the drum 16 meet, that is, the rotation stop position, and the stop position detection means 26 outputs an ON signal,
It is determined that the rotation stop position has been reached (step S
6, proceed to YESJ), and set the motor 9 to, for example, 0.
Electromagnetic braking is applied for 5 seconds to stop the drum 16 at a substantially rotational stop position (step 37). Subsequently, in abnormality notification example 4, the buzzer 58 is sounded to notify that there is an abnormality, and the drying operation is stopped (step S8).

Furthermore, at the end of the drying operation, the opening 16 of the drum 16 is opened based on the detection signal from the stop upper position detection means 26.
The rotation of the drum 16 is controlled to be stopped when the position of the drying material opening 4a is aligned with the drying material opening 4a.

According to this embodiment having such a configuration, after the start of operation, the drum lid 2 is
Since it is possible to judge the open/closed state of drum lid 2,
If No. 1 is in the open state, the buzzer 58 is sounded to alert the user and the operation is stopped, thereby preventing the drum lid 21 from being operated in an open state. .

Particularly in this case, as shown in FIG. 8(a), the reed switch 29 is mounted on the main body 20 so as to be slightly forward in the rotational direction with respect to the detected element when the drum lid 21 is fully open at the drum stop position. Because it is arranged, the drum M21
When the drum lid 21 is fully open as shown in the figure, the open state of the drum lid 21 can be determined immediately after the start of operation.
As shown in Figure (a), when the opening amount of the drum lid 21 is small, the drum M
The open state of 21 can be determined. Therefore, in any case, the open state of the drum lid 21 can be determined with the opening 16a of the drum 16 facing upward. Therefore, if the drum 16 is stopped after determining the open state of the drum lid 21, even if the drum 16 rotates by inertia to some extent (approximately 0°1 to (about 32 rotations)), the drum 16 will be opened regardless of the amount of opening of the drum lid 21. Since the portion 16a stops with the portion 16a facing upward, the drum 1
6. The material to be dried inside the main body 20 passes through the opening 16a.
You can definitely prevent it from falling inside. Furthermore, in this example, during drying operation, the drum suddenly crashed! ! Even if an accident occurs in which the drum lid 21 opens, the opening can be determined based on the detection signal from the drum lid detection means 31.

In the above embodiment, two door switches are used as the detection elements of the drum lid opening/closing determination means 31, but for example, a Hall element may also be used. Also, the stop position detection means 26
Although the reed switch 24 and the magnet 25 are used as the structure, the structure is not limited to this, and for example, it may be formed using a Hall element and a magnet.

[Effects of the Invention] As is clear from the above description, the present invention provides a detection means consisting of a shielding member that shields the detected element so that it cannot be detected when it is located between the detected element, the detection element, and the pixel element. the detection element is provided on the drum lid, the detection element is disposed on the main body so as to be slightly away from the detection element in the rotational direction by a distance # when the drum lid is fully open at the drum stop position; The shielding member is provided on the drum so as to shield the detected element with the drum lid closing the opening, and the open/closed state of the drum lid is determined based on the detection output of the detection means. Therefore, it is possible to prevent the drying operation from being performed with the drum lid open, and to judge whether the drum lid is open with the opening of the drum facing upward, it is possible to prevent the drying material inside the drum from drying. This has the excellent effect of preventing the liquid from falling into the main body through the opening.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a perspective view with the outer box removed, Fig. 2 is a perspective view of the whole, Fig. 3 is a vertical rear view of the whole, and Fig. 4 A front view of the operation panel, FIG. 5 is an electrical configuration diagram, FIG. 6 is a flowchart, and FIGS. 7(a) and (b) are schematic longitudinal sections showing different rotational states of the drum when the amount of opening of the drum lid is small. Front view, No. 8
Figures (a) and (b) are views corresponding to FIG. 7(a) and FIG. 7(b), respectively, when the drum lid is fully open. In the drawing, 4a is an entrance, 16 is a drum, 16a is an opening, 20 is a main body, 21 is a drum lid, 27 is a magnet (detected element), 29 is a reed switch (detection element), 30
Reference numeral 31 indicates a shielding plate, and 31 indicates a drum lid detection means (detection means).

Claims (1)

[Claims] 1. An inlet/outlet for the material to be dried is provided on the upper surface of the main body, and a drum is rotatably provided inside the main body and has an opening corresponding to the inlet/outlet in the body, and is movable in the circumferential direction of the drum. a drum lid for opening and closing the opening; controlling the drum so that the opening faces the entrance/exit of the main body; The detecting means is arranged in the same direction as the rotating direction, and includes a detection means made of a shielding member that shields the detected element so that it cannot be detected when it is located between the detected element, the detection element, and the pixel element, and the detected element is an element is provided on the drum lid, the detection element is arranged on the main body at a distance slightly away from the detected element in the rotational direction when the drum lid is fully open at the drum stop position, and the shielding member is provided on the drum so that the drum cover shields the detected element with the opening closed, and the open/closed state of the drum cover is determined based on the detection output of the detection means. Features a dryer.