JPH0623197A - Drum type clothes dryer - Google Patents

Abstract

PURPOSE:To easily grasp the rotation state of a drum in a dryer from outside by using other display function parts as they are. CONSTITUTION:The cloths dryer is provided with a display device 17 consisting of plural segments performing a prescribed number display such as the remaining time of an operation. The rotation of the drum is detected. Based on the detection result, the rotation of the drum is displayed on a display section '0' of the display device 17 while successively operating the segments. In this case, the display is performed in proportion with the actual rotation speed of the drum. Further, in the case the drum rotates in both forward and reverse directions, the change in the rotation direction is also displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum type clothes dryer adapted to indicate the rotation of a drum.

[0002]

2. Description of the Related Art Conventionally, in a drum type clothes dryer, the clothes to be dried are housed inside the drum, the drum in this state is rotated, and at the same time, hot air is supplied to the inside of the drum, so that the above-mentioned clothes to be covered are dried. It is designed to dry dry clothes.

[0003]

In the drum type clothes dryer as described above, when too much clothes to be dried are put in the drum, the load of the motor for rotating the drum is increased and the motor is started. The torque may be insufficient and the drum may not rotate.

When the clothes to be dried put in the drum are large sheets such as sheets, they are entangled with the same kind of clothes, or other general clothes to be dried are rolled up and hardened, The contact resistance with the back surface of the door, the baffle inside the drum, the filter, etc. increases, and the load on the motor also increases, and the drum may not rotate as described above.

Further, even if it is not the case due to the above-mentioned abnormality, the drum reduces its rotation speed toward the stop at the end of the operation, and then stops.

[0006] In addition, in recent years, the number of types of drying courses has increased, and there has been provided one capable of executing a course for rotating a drum in both forward and backward directions, which is suitable for drying clothes to be dried with delicate cloth quality. Has been done.

In these cases, the user wants to know the rotation status of the drum. However, in the conventional drum type clothes dryer, it is necessary to know the rotation status of the drum from the outside. It was difficult to remove. In particular, in recent years, as a measure to prevent the spread of fire in the event of a fire inside the drum, it has been practiced to attach an iron plate to the portion of the door facing the dried clothes entrance / exit, which leads to the inside of the drum. It was completely impossible to see the rotation status of the drum inside from outside the aircraft.

The present invention has been made in view of the above-mentioned circumstances, and therefore an object thereof is to easily know the rotation state of the drum inside the machine from the outside of the machine, and further to confirm it with other display function parts. An object is to provide an excellent drum type clothes dryer that can be used as it is.

[0009]

To achieve the above object, the drum type clothes dryer of the present invention is provided with a display composed of a plurality of segments for displaying a predetermined number, and the drum is rotated. Is provided, and the rotation of the drum is controlled so that the segment is sequentially operated and displayed on the "0" display portion of the display based on the detection result by the detection means. To do.

In this case, further, a calculation for calculating the rotation speed of the drum is performed based on the detection result of the detection means,
Based on the calculation result, it is preferable to control the drum rotation speed to be displayed on the "0" display portion of the display by changing the operating forward speed of the segment.

Regarding the rotational speed of the drum and the operating forward speed of the segment of the "0" display portion of the display, the relationship between them is N = αn, where N: rotational speed of the drum n: display Forward speed of the segment of the "0" display part of the vessel α: constant

In addition, in the case where the drum is rotated in both forward and reverse directions, control is performed to display the rotational direction of the drum on the "0" display portion of the display by changing the operating forward direction of the segment. Good to do.

[0013]

According to the above-mentioned means, it is possible to easily know the rotating condition of the drum inside the machine from the outside of the machine by observing the operating condition of the segment of the "0" display portion of the indicator which normally displays a predetermined number. .

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First of all, FIG. 3 shows an outer box 1 of the entire drum type clothes dryer, in which a drum 2 is arranged,
The drum 2 is rotated by a motor 3 shown in FIG. 6, and at the same time, warm air generated by a heater 4 and a fan (not shown) shown in FIG. The dried clothes (also not shown) are dried. Further, with respect to the drum 2 which is rotated in this way, a position sensor 5 which is a detecting means for detecting the rotation of the drum 2 is arranged in a portion near the drum 2 in the outer box 1 shown in FIG. .

In the outer box 1, however, the front plate 6 is made of an iron plate. The front plate 6 is made of a plastic for opening and closing the clothes inlet / outlet 7 to be dried which communicates with the inside of the drum 2. The door 8 is pivotally mounted, and a portion of the door 8 facing the doorway 7 is equipped with an iron plate spread prevention plate 9.

Further, an operation panel 10 is attached to a portion of the front plate 6 adjacent to the door 8. This operation panel 1
0 has the configuration shown in detail in FIG.
1 has a start / stop switch 12,
Heater selector switch 13 and course setting switch 14
LED 1 for displaying the switching contents of the heater 4
5, an LED 16 for displaying the setting contents of the course, and a display 17 for displaying the remaining time of driving and the set time of the timer in numbers.

The indicator 17 displays a maximum of three digits, each digit consisting of, for example, a light emitting diode of seven segments, as shown in detail in FIG. The remaining driving time and set time for each course are displayed in 10-minute increments. In this case, FIG. 5 shows “standard” as an example.
It shows a situation in which the remaining time "120 minutes" of the course is displayed, and the display time is reduced every 10 minutes from such a situation. Therefore, the rightmost digit (one's place) always displays "0".

On the other hand, FIG. 6 shows a microcomputer 18 functioning as a control means and an arithmetic means.
This includes a switch input unit 19 including various switches 12 to 14 except the power switch 11 of the operation panel 10.
Various switch signals are input, and signals regarding the rotation of the drum 2 (presence / absence of rotation, number of rotations) are input from the position sensor 5. Then, based on those inputs and the control program stored in advance, the microcomputer 18 causes the operation panel 10 to operate.
Drive circuits 22 to 2 for respectively driving the display unit 20 including the various LEDs 15 and 16 and the display device 17, the motor 3, the heater 4, and the buzzer 21 for abnormality notification.
A drive control signal is given to the signal 5.

Therefore, the control contents of the rotation display of the drum 2 mainly by the microcomputer 18 will be described below. As shown in FIG. 7, when the microcomputer 18 starts its control operation (start),
It is determined whether or not the driving course is to rotate the drum 2 in both forward and reverse directions (step S1). here,
As shown in Fig. 4, there are "ironing", "standard", "careful", "timer", and "delicate" in the course of operation of this dryer. Among these, in the "delicate" course The drum 2 is rotated in both the forward and reverse directions so that the clothes to be dried are dried with less entanglement.

If it is determined in step S1 that the course of operation is to rotate the drum 2 in both the forward and reverse directions ("delicate" course), then the motor 3 is rotated to the drum 2
Is energized so as to rotate in both forward and reverse directions, and the heater 4 is also energized (step S2). If it is determined in step S1 that the course of operation does not rotate the drum 2 in both the forward and reverse directions (courses other than "delicate"), then the motor 3 is driven in the drum 2 in only one direction. The heater 4 is energized so as to be rotated (step S3).

Then, in any of the courses, next, the rotation of the drum 2 is detected by the signal from the position sensor 5 (step S4), and then it is determined whether or not the drum 2 is rotating (step S4). Step S5). In this case, the rotation of the drum 2 in step S4 is detected for a time exceeding, for example, 2 seconds.
The reason for this is that when the motor 3 is rotated in the forward and reverse directions such as during a "delicate" course, the motor 3 is temporarily stopped when the rotation direction changes from one rotation to the other rotation. This is to prevent detection and erroneous determination in step S5.

If it is determined in step S5 that the drum 2 is rotating, then a calculation for calculating the rotation speed of the drum 2 is performed (step S6). This calculation is performed by dividing the number of rotations of the drum 2 at this time by the counted time (number of rotations / minute), and thereafter, the rotation status of the drum 2 by them is displayed on the display unit 17 ( Step S7).

As shown in FIGS. 1 (a) to 1 (f), this display sequentially operates the segments of the rightmost digit of the display unit 17 which always display "0" (in this case, one by one). , Light is emitted, and this is repeated, and when the course of operation is to rotate the drum 2 in both forward and reverse directions, and the rotation direction of the drum 2 is opposite, As shown in (a) to (f), the segments of the "0" display portion of the display unit 17 are operated one by one in the opposite direction to the above, and this is repeated.

Further, in this case, the relationship between the rotation speed of the drum 2 and the forward speed of the segment of the "0" display portion of the display unit 17 is N = αn, where N is the rotation speed of the drum and n is the display speed. The operating forward speed of the segment of the "0" display part of the container is set to α: a constant, whereby the rotational speed of the drum 2 can be known by the operation of the display segment of a speed proportional thereto. Especially, the rotation speed of the drum 2 is usually 50 [rpm]
This is displayed on the "0" display portion of the display unit 17 at the operating forward speed of the segment of 1/10 (α = 10), for example.

However, after the step S7, it is judged whether or not the operation end time has been reached (step S8). While it is judged that the operation end time has not been reached, the process returns to the step S4 and the above-mentioned matter is performed. Repeat.

Further, if it is judged that the drum 2 is not rotating at step S5 or the first step S5 after returning, the rotation of the drum 2 at the "0" display portion of the display 17 is confirmed. The user is informed of the situation in which the drum 2 is not rotating without stopping the display, or without displaying the display from the beginning (step S9). Also, in this case,
Next, the power supply to the motor 3 and the heater 4 is cut off (step S
10) Further, the abnormality is notified by operating the buzzer 21 (step S11), and the operation ends (end).

On the other hand, if it is determined that the operation has proceeded normally and the operation end time has been reached in step S8,
Next, the power supply to the motor 3 and the heater 4 is cut off (step S
12) After that, the drum 2 continues to rotate due to inertia,
Based on the signal from the position sensor 5, it is determined whether the drum 2 has stopped rotating (step S13). Until it is determined in step S13 that the drum 2 has stopped rotating, the rotation status of the drum 2 is displayed in steps S14, 15, and 16 similar to steps S4, S6, and S7, and the drum 2 rotates. When it is determined that the operation has been stopped, the display is stopped (step S17), and the operation is ended (end).

As described above, in this structure, based on the detection result of the position sensor 5 which detects the rotation of the drum 2, the rotation of the drum 2 is sequentially operated on the "0" display portion of the display unit 17 for each segment. The rotation status of the drum 2 in the machine (whether or not it is rotating normally) can be easily known from outside the machine. Moreover, the display device 17 originally displays a predetermined number such as the remaining time of driving or the set time of the timer,
Since the rotation of the drum 2 can be displayed by using it as it is, cost efficiency can be improved.

Further, in this case, in particular, a calculation for calculating the rotation speed of the drum 2 is performed based on the detection result of the position sensor 5, and the rotation speed of the drum 2 is indicated by "0" on the display 17 based on the calculation result. By changing the operating forward speed of the segment to be displayed on the display portion, changes in the rotation speed of the drum 2, particularly changes due to an abnormality, changes to a stop at the end of operation, etc. It can be easily known from outside the aircraft.

Further, the rotation speed of the drum 2 and the display 1
Regarding the operating forward speed of the segment of the "0" display part of 7, N = αn and N: the rotation speed of the drum n: the operating forward speed of the segment of the "0" display part of the display By setting α to a constant, the rotational speed of the drum 2 can be known by the operation of the display segment at a speed proportional to that, and the user can know it more practically.

In addition, in the course in which the drum 2 is rotated in both forward and reverse directions, the rotation direction of the drum 2 is displayed on the "0" display portion of the display 17 by changing the operating forward direction of the segment. By doing so, the change in the rotation direction can be easily known from outside the machine.

The detection means for detecting the rotation of the drum 2 may be, for example, an optical sensor or a limit switch other than the position sensor 5. Also, the display is especially "0".
The number of segments in the display portion may be 6, 4 or the like other than 7, and each of the segments may be a liquid crystal device or the like instead of the light emitting diode.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and can be implemented with appropriate modifications within the scope not departing from the gist.

[0034]

The drum type clothes dryer of the present invention is as described above and has the following effects.

In the drum type clothes dryer according to the first aspect of the present invention, there is provided a display comprising a plurality of segments for displaying predetermined numbers, and a detection means for detecting rotation of the drum is provided, and the detection means is provided. By controlling the rotation of the drum on the "0" display portion of the display by sequentially activating the segment based on the detection result by the, the rotation status of the drum inside the machine can be easily controlled from outside the machine. It can be known and can be achieved by using other display function components as they are.

In the drum type clothes dryer according to the second aspect of the present invention, further, a calculation for calculating the rotation speed of the drum is performed based on the detection result by the detection means, and the rotation speed of the drum is displayed based on the calculation result. By controlling so that the operating forward speed of the segment is changed and displayed on the "0" display part of, the change in the rotational speed of the drum can be easily known from outside the machine.

In the drum type clothes dryer of claim 3, the relationship between the rotational speed of the drum and the operating forward speed of the segment of the "0" display portion of the display is expressed as N = αn. , N: Drum rotation speed n: Forward motion speed of the segment of "0" display part of the display α: Knowing the rotation speed of the drum 2 by the operation of the display segment of the speed proportional to it by setting to the constant It is possible to make it more realistic.

In the drum type clothes dryer according to a fourth aspect of the present invention, the drum is rotated in both forward and reverse directions, and the direction of rotation of the drum is displayed in the "0" display portion of the display unit in the forward operating direction of the segment. By performing the control of changing and displaying, the change in the rotation direction of the drum 2 can be easily known from outside the machine.

[Brief description of drawings]

FIG. 1 is a front view of an indicator portion showing an embodiment of the present invention in a rotation display order of a drum.

FIG. 2 is a front view of an indicator portion in the reverse rotation display order of the drum.

FIG. 3 is an overall perspective view

FIG. 4 is a front view of an operation panel portion.

FIG. 5 is an enlarged front view of only the display portion.

FIG. 6 is a schematic electrical configuration diagram.

FIG. 7 is a flowchart for explaining the operation.

[Explanation of symbols]

2 is a drum, 5 is a position sensor (detection means), 17 is a display, and 18 is a microcomputer (control means, calculation means).

Claims (4)

[Claims] 1. A detection means for detecting the rotation of the drum, comprising a drum which contains clothes to be dried and which is rotated, and an indicator which is composed of a plurality of segments for displaying predetermined numbers. And a control means for controlling the rotation of the drum based on the detection result of the detection means so that the segment is sequentially operated and displayed on the "0" display portion of the display. Type clothes dryer. 2. A calculation means for calculating the rotation speed of the drum based on the detection result of the detection means, and based on the calculation result, the control means displays the rotation speed of the drum on the "0" display portion of the display. The drum type clothes dryer according to claim 1, wherein the operation forward speed of the segment is changed and displayed. 3. The relationship between the rotational speed of the drum and the operating forward speed of the segment of the "0" display portion of the display is N = αn, where N: rotational speed of the drum n: "0" of the display. 3. The drum type clothes dryer according to claim 2, wherein the operating forward speed α of the segment of the display portion is set to a constant. 4. A control in which a drum is rotated in both forward and reverse directions, and the control means displays the rotational direction of the drum on the "0" display portion of the display by changing the operating forward direction of the segment. The drum type clothes dryer according to any one of claims 1 to 3, wherein