KR0141460B1 - Clothes dryer - Google Patents

Abstract

The present invention relates to a dryer which is capable of sufficiently drying all of the dried clothing having a difference in the position of the drum, the thickness of the fabric, and the quality of the drum without staining, and is determined in the detection result by the dryness detection means during the drying operation. When the dryness is detected, the drying operation is terminated after a predetermined time, and the drum is reversely or intermittently rotated during the predetermined time to detect the dryness again, and as a result, the predetermined drying is performed. When the degree is not detected, the drying operation is again performed for a predetermined time, and the detection level of the predetermined degree of dryness when the dryness is detected again is set to 95 [%] or more.

Description

Clothes dryer

1 is a flowchart for explaining the operation of the first embodiment of the present invention;

2 is a longitudinal cross-sectional view of the whole;

3 is a schematic electrical diagram,

4 is an equivalent of FIG. 1 showing a second embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

4: drum 9: motor

12: Drive 18: Heater

19: fan 25: hot air supply device

27: microcomputer (control means) 30: electrode (dryness detection means)

31: detection circuit (dryness detection means)

The present invention relates to a medical dryer for controlling operation by detecting the dryness of the dry clothing in the drum in a so-called drum type.

Recently, in the so-called drum type clothes dryer, there is provided a dryness detecting means for detecting the dryness of the clothes in the drum. When the medical dryer detects a predetermined dryness by the dryness detecting means during the drying operation, the drying operation continues to end for a predetermined time.

According to the above-described medical dryer, the drying operation can be efficiently performed without depending on the user's intuition.

However, there is a difference in the dryness between the clothing near the dryness detecting means and the clothing away from the dryness detecting means, especially in the case where the depth of the drum has been increased in recent years. In addition, there are differences in the thickness of thick and thin lamps, and there are differences in the quality of fabrics such as natural fibers and chemical fibers, and their drying speeds are different. In this regard, even a dryer provided with the dryness detecting means has a problem in that the dryness of clothes is different and so-called dry spots are generated.

The present invention has been made in view of the above-described circumstances, and therefore an object thereof is to provide a clothes dryer that can dry clothes without generating dry stains.

In order to achieve the above object, there is provided a clothes dryer of the present invention, comprising: a drum accommodating clothes to be dried, a driving device which rotates the drum in a forward and reverse direction, and a hot air supply device for supplying hot air into the drum; At the same time, there is a dryness detecting means for detecting the dryness of the dry clothing in the drum, and during the drying operation by the driving device and the hot air supply device, the drying operation is performed after the predetermined dryness is detected by the dryness detecting means. The operation is terminated by executing a predetermined time, wherein the drum is reversed during the predetermined time, and the dryness detection means is executed again by the dryness detecting means. As a result, the drying operation is performed when the predetermined dryness level is not detected. It is characterized in that for a predetermined time again.

In the clothes dryer of the present invention, there is provided a drum for accommodating dry clothing, a drive device rotatable in one direction for rotating the drum, and a hot air supply device for supplying hot air into the drum, And a dryness detecting means for detecting the dryness of the clothes, and during a drying operation by the driving device and the hot air supply device, when a predetermined dryness is detected by the dryness detecting means, the drying operation is performed for a predetermined time thereafter. In this case, the drum is intermittently rotated during the predetermined time, and the dryness detection means is again detected by the dryness detecting means. As a result, the drying operation is again performed for a predetermined time when the predetermined dryness level is not detected. It is characterized by.

In this case, in any of the above cases, the detection level of the predetermined dryness when the dryness detection is executed again may be set to 95 [%] or more.

According to the above means, the drum is operated or intermittently rotated during the drying operation for a predetermined time after the predetermined dryness is detected by the dryness detecting means, thereby causing a change in agitation of the dried clothing in the drum, thereby replacing it. . In this situation, the dryness detection is again performed by the dryness detecting means, and when the predetermined dryness is detected as a result, it may be determined that there is insufficient drying of the dried clothing. As a result, drying of the dried clothing is continued, and thus, it is possible to sufficiently dry all of the dried clothing having a difference in the position of the dryness detecting means in the drum, the thickness of the fabric, the quality of the fabric, and the like.

In this case, when the dryness detection level is set again, setting the detection level of the predetermined dryness to 95 [%] or more can make drying of the dried clothing more sufficient.

EXAMPLE

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 3. 2 shows the outer box 1 of the entire clothing dryer, and a clothes entrance 2 is formed at the center of the front part thereof, and a door 3 for opening and closing the door 2 is rotatably installed. The drum 4 is accommodated inside the outer box 1, and the drum 4 has a large opening 5 formed in the front part thereof, and a drum support provided in the front part in the outer box 1 ( 6) is rotatably supported. The shaft 7 provided at the center of the rear side of the drum 4 is supported by the support plate 8 installed at the rear part of the outer box 1, and the drum 4 is rotatably supported by this shaft 7. .

At the upper portion of the space formed between the drum 4 and the outer box 1, a biaxial motor 9 is provided, and a first pulley installed at one side end of the motor 9 and the rotary shaft. (10) is attached. The drive device 12 for rotationally driving the drum 4 by the motor 9, the first pulley 10 and the first belt 11 provided on the outer circumference of the drum 4 in the pulley 10 is provided. Formed. In this case, the drive device 12 is rotatable in both forward and reverse directions as a whole.

In the rear part of the drum 4, a plurality of small holes are drilled and installed, and an outlet 13 is formed, which is covered by a filter 14 inside the drum 4. . On the other hand, the outlet 13 is connected to the fan casing 15 in the rear of the drum 4 outside. The fan casing 15 is connected to the duct 16 from the lower side, and the mouth of the duct 16 is formed by drilling a plurality of small holes in the lower part of the drum support 6 ( 17) is connected successively. The heater 18 is provided in the duct 16 of the back part of the inlet 17.

In the fan casing 15, a fan 19 having a double-winged heat exchanger is installed so as to divide it back and forth, and the fan 19 is connected to the second poly 20 and the second belt by the motor 9. It is made to rotate through (21).

Here, when the fan 19 rotates, as shown by the arrow, the air in the drum 4 is sucked into the whole of the fan casing 15 by the air outlet 13 and discharged into the duct 16 and the air outside the dryer The outside air suction port 23 formed at the center of the box back plate 22 is sucked into the rear portion of the fan casing 15 and discharged to the outside of the dryer from the outside air-based return hole 24 formed at the bottom of the outer box back plate 22. In the fan casing 15, the air in the drum 4 and the air outside the dryer are heat-exchanged with the fan 19 interposed, and the air in the drum 4 is dehumidified. Therefore, the dehumidification air passes through the duct 16 and when the heater 18 is energized and heats, it sends heat to the corresponding heater 18 and turns into hot air, which is supplied from the inlet 17 to the drum 4. These constitute the hot air supply device 25.

FIG. 3 shows the main configuration of the control circuit of the dryer and is actually mounted on the circuit board 26 shown in FIG. 2 and installed above the outer box 1. The microcomputer 27 is designed to function as the backbone of the control means, and the DC power source is supplied from the power supply 28 via the rectifier circuit 29 to the required DC power. The microcomputer 27 is brought into contact with the drum 4 so that the dryness detection signal of the dried clothing is input through the detection circuit 31 from the electrode 30 provided below the drum support 6. Therefore, these electrodes 30 and the detection circuit 31 are designed to function as dryness detection means.

In addition, the microcomputer 27 has various switch signals at the switch input section 32 composed of various switches or the temperature detection signals at the temperature sensor 33 (see FIG. 2) provided to detect the temperature in the drum 4. In addition, the clock pulse generation circuit 34 inputs the clock pulses to the clock pulse generation circuit 34, and based on the input and the pre-stored control program, the microcomputer 27 supplies the motor 9 and the heater 18 and The drive control signal is provided to the drive circuit 36 for driving the buzzer 35. A power switch 37 is connected between the power source 28 and the circuit from the power source 28 to the motor 9, the heater 18, and the buzzer 35.

Next, the operation based on the function of the control circuit of the dryer having the above configuration will be described.

As shown in FIG. 1, when the operation is started, the microcomputer 27 energizes the heater 18 and the motor 9 for the first time (step A1). Accordingly, the drum 4 is driven to rotate in the forward driving direction and hot air is supplied therein.

Thereafter, the dryness detection signal from the electrode 30 and the detection circuit 31 results in a predetermined dryness (for example, 95 [%] or more of 95 to 99 [%]) of the dry clothing in the drum 4. Is judged (step A2), and step A2 is continued until a predetermined dryness level is detected.

When the predetermined dryness is detected in step A2, the count value of time t1 is set to 0 (step A3), and then the counting operation of the time t1 is started (step A4).

When the count value of this time t1 reaches t2 (for example, 10 [minutes]), for example, the motor 49 operation stop time is set for 10 seconds, and after the stop time has elapsed, the motor 9 Is rotated in the reverse direction for 10 seconds to reverse the drum 4, after which the motor 9 is rotated in the forward driving direction for 10 seconds after a 10 second stop time (step A5). In addition, the reverse operation and the forward operation of the drum 4 may not be performed once but may be executed plural times, or may be performed by reverse operation without performing the forward operation.

After that, the dryness detection signal from the detection circuit 31 again detects a predetermined dryness (for example, 95 [%] or more of 95 to 99 [%]) of the clothes in the drum 4 as well. It is judged whether or not (step A6). When the predetermined dryness is detected, it is judged whether or not the count value of time t1 has reached a predetermined time, for example, 15 [minutes] (step A7), and the count operation of time t1 is ended at the point where it reached (step A8). ) The energization of the heater 18 and the motor 9 is stopped (step A9) to complete the operation.

However, if the predetermined dryness is not detected in step A6, the flow returns to step A3 and operation continues.

Thus, in this structure, even after the predetermined dryness is detected by the dryness detection means provided with the electrode 30 and the detection circuit 31, the drum 4 is reversed and stirring of the clothing in the drum 4 is carried out. The condition is changed and clothing is replaced. Next, when the dryness is detected again by the electrode 30 and the detection circuit 31, and when the predetermined dryness is not detected as a result, it is determined that there is insufficient drying of the dry clothing and the operation is again determined. The drying of the garment continues to run because it is time to run. In this way, the clothes can be sufficiently dried and the dry spots can be eliminated regardless of the position of the clothes accommodated in the drum 4, the thickness of the cloth, the quality of the cloth, and the like.

In step 6, when the dryness detection level in the dryness detection is set to 95 [%] or more, the drying becomes more sufficient and the occurrence of dry stains can be further eliminated.

4 shows a second embodiment of the present invention. Instead of step A5, when the predetermined time t2 is reached in step B5, the rotation of the motor 9 is stopped, for example, for 10 seconds, and then energized for 10 seconds. The drum 4 is intermittently rotated by intermittently energizing the motor 9. Steps B1 to B4 and steps B6 to B9 are the same as A1 to A4 and steps A6 to A9 of the first embodiment.

In the second embodiment, the drive device 12 is configured to rotate only in one direction, so that the intermittent rotation of the drum 4 is also executed in only one direction.

In this way, the drum 4 is intermittently rotated, and a change in agitation of the clothes in the drum 4 occurs, and the dryness is detected again so that the same effect as in the first embodiment can be obtained. .

Also in the second embodiment, if the dryness detection level of the dryness detection is set to 95 [%] or more, it is sufficiently dried and the occurrence of dry stains can be eliminated.

The time t1 and t2 may be longer or shorter than the above 10 [minutes] and 15 [minutes]. In addition, this invention is not limited only to the above-mentioned or shown in the figure, It can change suitably and implement in the range which does not deviate from the summary.

The clothes dryer of the present invention has the following effects as described above.

Firstly, there is provided a drum for receiving the clothing to be dried, a driving device which rotates the drum in reverse and forward operation, and a hot air supply device for supplying hot air into the drum. It is provided with a dryness detecting means for detecting, and when a predetermined dryness is detected by the dryness detecting means during the dry operation by the said drive apparatus and a hot air supply apparatus, a drying operation is performed after that for a predetermined time, and it complete | finishes an operation. During the predetermined time, the drum is reversed to perform the dryness detection by the dryness detecting means again, and when the dryness is not detected as a result, the drying operation is again performed for a predetermined time so that It is possible to sufficiently dry all the dried clothing with the difference in thickness, quality, etc., and eliminate dry spots. .

Secondly, there is provided a drum accommodating the to-be-dried clothing, a driving device which can rotate only in one direction to rotate the drum, and a hot air supply device to supply hot air into the drum, and at the same time to detect the dryness of the to-be-dryed clothing in the drum. It is provided with a dryness detecting means, and when a predetermined dryness is detected by the dryness detecting means during the dry operation by the driving device and the hot air supply device, the drying operation is executed for a predetermined time thereafter to terminate the operation. The drum is intermittently rotated during time to detect the dryness by the dryness detecting means again, and as a result, when the predetermined dryness is not detected, the drying operation is again performed for a predetermined time. It is possible to dry all of the dried clothing with the difference in thickness, quality, etc. enough, and To be eliminated.

Third, by setting the detection level of the predetermined dryness when the dryness detection is executed again to 95 [%] or more, the drying of the dried clothing can be made more sufficient and the occurrence of dry stains can be further eliminated. have.

Claims (3)

A drum for holding the dry clothing, a drive device for rotating the drum in a forward and reverse direction, and a hot air supply device for supplying hot air into the drum, and at the same time, the drying of the dry clothing in the drum is detected. When a predetermined degree of dryness is detected by the dryness detecting means during the dry operation by the drive device and the hot wind supply device, the drying operation is executed for a predetermined time thereafter to finish the operation. And the drum is driven in reverse to detect dryness by the dryness detecting means again, and when the predetermined dryness is not detected, the drying operation is again performed for a predetermined time. A drum for accommodating the dry clothing, a driving device rotatable in one direction for rotating the drum, and a hot air supply device for supplying hot air into the drum, and at the same time, the dryness of the dry clothing in the drum is detected. A detection means is provided, and during a dry operation by the drive device and the hot air supply device, when a predetermined dryness level is detected by the dryness detection means, the drying operation is ended after a predetermined time, and the drum is intermittently intermitted during the predetermined time. And rotating to execute the dryness detection by the dryness detecting means again, and when the predetermined dryness is not detected, the drying operation is again performed for a predetermined time. The clothes dryer according to claim 1 or 2, wherein the detection level of the predetermined dryness when the dryness detection is executed again is set to 95 [%] or more.