JP2013085790A - Cloths dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cloths dryer capable of accurately detecting the volume of laundry and setting optimal delay time in accordance with the volume of laundry.SOLUTION: A cloths dryer comprises: an opening 8 disposed at a front face of a drum 1; an inner circumferential part 10 disposed at a front part of a housing 2 opposite to the opening; a first electrode sensor 11 disposed at the inner circumferential part 10 so as to contact with laundry to be dried in the drum; resistance detecting means 21 for detecting a value of resistance of the laundry to be dried that contacts with the first electrode sensor; and controlling means 20 for controlling an operation time on the basis of the output of the resistance means. The first electrode sensor is disposed at a position higher than a rotation axis 1a and displaced in a direction opposite to the rotation direction of the drum with a prescribed angle with respect to a vertical line passing the rotation axis 1a of the drum.

Description

  The present invention relates to a clothes dryer for drying clothes and the like.

  Conventionally, in this type of clothes dryer, as shown in FIGS. 12 and 13, a rotating drum 52 is rotatably provided in a main body 51, and hot air heated through a heater 54 by rotation of a blower fan 53 is provided. It introduces into the rotating drum 52 from the outlet 55 and dries the object to be dried such as clothes, and is provided with an electrode 56 so that clothes to be stirred in the rotating drum 52 come into contact with the clothes during the drying operation. It is considered to detect a dry state by detecting a resistance value such as. The operation is terminated at a time t4 when a certain delay time T3 has elapsed from a time t2 when the resistance value r between the pair of conductive members provided on the electrode 56 continuously exceeds the set value a for a predetermined time T1. (For example, refer to Patent Document 1).

  Also, it is considered to detect the amount of an object to be dried such as clothes put in by an electrode and the dry state due to the progress of the drying operation. Capacitance detection of clothing and the like is performed by detecting the amount of clothing based on the contact frequency per unit time of the signal of the electrode. If the count number N of the clothing amount detection signal is large (the amount of clothes to be dried is large), the remaining drying operation time T is lengthened. Conversely, if the count number N is small (the amount of clothes to be dried is small), the remaining The drying operation time T is shortened (for example, refer to Patent Documents 2 and 3).

Japanese Patent Application Laid-Open No. 5-25397 JP-A-6-54996 JP 2001-793A

  However, in the conventional configuration, there is a problem that it is difficult to accurately detect the capacity of the garment that is put in, and it is difficult to optimally set the delay time according to the capacity of the garment.

  The present invention solves the above-described conventional problems, and can accurately detect the volume of an object to be dried such as clothes put in a drum, and can set an optimal delay time according to the clothes volume. The purpose is to provide a dryer.

  In order to solve the conventional problems, a clothes dryer according to the present invention includes an opening provided on the front side of a drum, an inner peripheral part provided in a front part of a housing facing the opening, An electrode sensor provided on the inner periphery so as to be in contact with an object to be dried in the drum, a resistance detecting means for detecting a resistance value of the object to be dried in contact with the electrode sensor, and an operation by an output of the resistance detecting means Control means for controlling the time, and the electrode sensor is displaced by a predetermined angle above the rotation axis and in a direction opposite to the rotation direction of the drum with respect to a normal passing through the rotation axis of the drum It is provided at the position.

Thereby, the position of the electrode sensor can be optimized, and the amount of the object to be dried can be accurately detected from the contact frequency of the object to be dried put in the drum to the electrode sensor at the initial stage of operation. The delay time after drying can be optimally set according to the amount of the object to be dried.

  The clothes dryer of the present invention can accurately detect the volume of the material to be dried put in the drum, optimally set the delay time after drying according to the amount of the material to be dried, and efficiently dry Can be done.

Sectional drawing of the principal part of the clothes dryer in Embodiment 1 of this invention. EE arrow view of the clothes dryer in FIG. Flow chart showing the operation of the clothes dryer Graph showing the relationship between the output obtained from the electrode sensor of the clothes dryer and the clothing capacity EE arrow line view of clothes dryer in Embodiment 2 of the present invention of FIG. Flow chart showing the operation of the clothes dryer Graph showing the relationship between the output obtained from the electrode sensor of the clothes dryer and the clothing capacity A graph showing the relationship between the output obtained from the electrode sensor of the clothes dryer and the capacity and quality of the clothes EE arrow line view of clothes dryer in Embodiment 3 of the present invention of FIG. HH sectional view of FIG. 9 of the clothes dryer The flowchart which shows operation | movement of the clothes dryer in Embodiment 4 of this invention. Sectional view of the main parts of a conventional clothes dryer The graph which shows the relation between the detection resistance value of the electrode of the clothes dryer and the time change

  According to a first aspect of the present invention, there is provided a drum rotatably provided in a housing, a motor for rotationally driving the drum, an opening provided on the front side of the drum, and the housing facing the opening. An inner peripheral part provided in the front part, an electrode sensor provided in the inner peripheral part so as to be in contact with the object to be dried in the drum, and resistance detection for detecting a resistance value of the object to be dried in contact with the electrode sensor Means and a control means for controlling the operation time by the output of the resistance detection means, and the electrode sensor is above the rotation axis and perpendicular to the rotation axis of the drum. By providing it at a position deviated by a predetermined angle in the direction opposite to the rotation direction, the amount of material to be dried put in the drum can be detected linearly from a small amount to a large amount by the electrode sensor. Can optimize the position. That. Accordingly, it is possible to accurately detect the amount and dry state of the object to be dried, set an optimal delay time according to the amount of the object to be dried after drying, and efficiently dry the clothes.

  In particular, the second invention is provided with a second electrode sensor on the inner peripheral portion of the first invention, and the second electrode sensor is provided in a direction diagonal to the electrode sensor around the rotation axis of the drum. By making contact with the material to be dried in the drum, it is possible to accurately detect the clothing capacity and quality from the contact frequency of the material to be dried put in the drum to the electrode sensor at the initial stage of operation, The dry state can be detected, the delay time can be optimally set according to the clothing capacity after drying, and the drying can be performed efficiently.

  In the third invention, in particular, the electrode sensor of the first or second invention and the second electrode sensor have a pair of electrode portions in the circumferential direction of the drum so that the distance from the rotation axis of the drum is substantially equal. Are arranged opposite to each other, and the height of one electrode part that comes into contact with the object to be dried that rotates in the drum is lower than the height of the other electrode part, thereby rotating in the drum. The object to be dried can be accurately brought into contact with the electrode sensor, and the clothing capacity and quality can be detected with high accuracy.

  In the fourth aspect of the invention, in particular, the control means of any one of the first to third aspects of the invention is based on the information obtained from the resistance detection means. Resistance detection means by detecting the volume of the dried material to be dried, then detecting the dry state based on the information obtained from the resistance detection means, and setting a delay time after drying It is possible to accurately detect the volume of clothing, the quality of clothing, and the dry state by recognizing and judging the output fluctuations of the clothing, setting the optimal delay time according to the clothing capacity and quality, and efficiently Can be dried.

  In the fifth invention, in particular, the control means of any one of the first to fourth inventions compares the resistance value information obtained from the resistance detection means at the initial stage of operation with two or more threshold values, and more than two. It is possible to accurately detect the capacity of the garment by recognizing and judging the output fluctuation of the resistance detection means, and to determine the optimum delay time according to the capacity of the garment. Settings can be made and clothes can be efficiently dried.

  In the sixth aspect of the invention, in particular, the control means of any one of the second to fifth aspects of the invention detects a resistance value by the electrode sensor and the second electrode sensor, and outputs the resistance value from the electrode sensor and the second electrode sensor. By determining the capacity and quality of the object to be dried from the difference and absolute value of the output, the information of the plurality of resistance detection means is taken in, and the output fluctuations are recognized and determined. The capacity and quality of clothing can be accurately detected, and an optimum delay time can be set in accordance with the capacity and quality of clothing to efficiently dry the clothing.

  In particular, the control means according to any one of the second to sixth inventions is finalized when the information obtained from the resistance detection means exceeds a predetermined threshold value and the resistance change exhibits a predetermined behavior. It is determined that the drying is performed, and the final delay time after drying is set as a function of the capacity and quality of the material to be dried based on the capacity and quality of the material to be dried, so that information on the resistance detection means is obtained. , And recognize and judge these output fluctuations, it is possible to accurately detect the capacity of clothes, the quality of clothes, and the dry state, and to accurately determine the end of drying. The optimal delay time can be set according to the quality and the clothes can be efficiently dried.

  In the eighth aspect of the invention, in particular, the control means of any one of the second to seventh aspects of the invention prevents the threshold for the information obtained from the resistance detection means from changing even when the set value of the drying level is changed. By taking in the information of the resistance detection means, and recognizing and judging these fluctuations, it is possible to accurately detect the capacity of clothes, the quality of clothes, and the dry state, according to the capacity and quality of clothes. The optimal delay time can be set and the clothes can be efficiently dried.

  According to a ninth aspect of the invention, in particular, in any one of the second to eighth aspects of the invention, there is provided temperature detecting means for detecting the temperature of the drying air, and the control means is provided until the temperature detecting means reaches a predetermined temperature. Periodically determine the clothing capacity and quality, feed back to the remaining time display based on the determination result, after the change in the resistance value detected by the electrode sensor and the second electrode sensor shows a predetermined behavior, By displaying the delay time suitable for the clothing capacity and quality, the information of the temperature detecting means and the resistance detecting means is taken into the control means, and these output fluctuations are recognized and determined. It is possible to accurately detect the quality and dryness of clothing, display the remaining time accordingly, and accurately determine the end of drying. Flip to set the optimal delay time, can be efficiently carried out the drying of the clothes, energy saving for drying clothes, accuracy, it is possible to reliably improve the reliability.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a cross-sectional view of a main part of a clothes dryer according to the first embodiment of the present invention, FIG. 2 is a view taken along the line EE of FIG. 1, and FIG. 3 is a flowchart showing the operation of the clothes dryer. FIG. 4 is a graph showing the relationship between the output obtained from the electrode sensor of the clothes dryer and the clothing capacity.

  1 to 4, a drum 1 that puts an object to be dried such as clothes b and is dried is rotatably provided in a housing 2 of the clothes dryer. A motor 3 for driving the drum 1 is provided, and the drum 1 is rotated via the drum belt 4 by driving the motor 3. The drum 1 is formed in a substantially bottomed cylindrical shape, and its rotating shaft 1a is provided in the horizontal direction. The blower fan 5 is rotated through the fan belt 6 by driving the motor 3 so as to introduce the drying air through the circulation air passage 7 into the drum 1 constituting the drying chamber in which the clothes are put.

  An opening 8 is provided on the front surface side of the drum 1 for taking in and out an object to be dried such as clothes b, and is opened and closed by a door 9 that can be freely opened and closed. An inner peripheral portion 10 is annularly arranged at the front portion in the housing 2 so as to face the circular opening portion 8 provided on the front surface side of the drum 1, and the outer periphery along the edge portion of the opening portion 8. It is formed in a donut shape. A first electrode sensor (electrode sensor) 11 is formed on the surface of the inner peripheral portion 10 on the drum 1 side, and is provided so as to come into contact with clothes agitated in the drum 1.

  When the rotation direction of the drum 1 is clockwise, i.e., clockwise in the direction of the arrow B, the first electrode sensor 11 has a drum 1 with respect to a vertical line C passing through the rotation axis 1a in the cross section of the drum 1. It is installed at a position deviated by a predetermined angle θ1 (for example, 30 to 45 degrees) in the direction opposite to the rotation direction (arrow B direction).

  The first electrode sensor 11 detects the resistance value of the clothing a and the like that is agitated by the rotation of the drum 1 and straddles between the pair of electrode portions 11a and 11b. This is for detecting the volume of the garment, and when the power supply for starting the drying operation is turned on and the drum 1 rotates, the volume of clothing put in the drum 1 is detected in the initial period of about 1 to 5 minutes. Is.

  By installing the first electrode sensor 11 at this position, the output from the first electrode sensor 11 and the clothing capacity can be detected in a substantially linear relationship. When the output from 11 is large, the clothing capacity is large. When the output is medium, the clothing capacity is medium. When the output is small, it can be determined that the clothing capacity is small.

  The drying detection electrode sensor 12 is installed at a position facing the lower portion of the opening 8 provided on the front surface side of the drum 1 so that clothes agitated by the rotation of the drum 1 are always in contact with each other. And a pair of electrode portions 12a and 12b.

  The first electrode sensor 11 and the dry detection electrode sensor 12 detect the surface resistance of the clothing when the drum 1 rotates and the clothing agitated and rotated in the drum 1 comes into contact with the clothing. When the humidity is high, the resistance is low, and when the humidity is low, the resistance is high.

  The pair of electrode portions 11a and 11b of the first electrode sensor 11 and the pair of electrode portions 12a and 12b of the dry detection electrode sensor 12 are made of conductive metal and have a length of about 2 to 10 cm. It is composed of a rod-like body, and is disposed so as to be opposed to each other at a predetermined interval as being insulated from each other by an insulating member (not shown) that is electrically insulated.

  The electrode portions 11a and 11b and the electrode portions 12a and 12b are installed so that the distance from the rotation shaft 1a of the drum 1 is different. The electrode portion 11a (L1) is closer to the rotation shaft 1a than the electrode portion 11b (L2), The electrode portion 12a is also configured to be closer to the rotation shaft 1a than the electrode portion 12b.

  The drying air blown to the circulation air passage 7 by the blower fan 5 is dehumidified and heated by the heat pump device 13 and blown into the drum 1, circulates in the drum 1 through the circulation air passage 7, and the like Drying proceeds.

  The heat pump device 13 includes a compressor 14, a radiator 15 that radiates heat of the compressed refrigerant, a throttle means 16 that includes a throttle valve, a capillary tube, and the like for reducing the pressure of the high-pressure refrigerant, and a low-pressure reduced pressure. The refrigerant is connected to the heat absorber 17 that takes heat from the surroundings by a pipe 18 so that the refrigerant circulates, and the refrigerant flows and circulates in the direction of arrow F in FIG. 1 to realize a heat pump cycle. To do.

  The drying air that has become wet due to contact with the wet clothing A in the drum 1 enters the circulation air passage 7 and is cooled and dehumidified by the heat absorber 17 to become low-temperature dry air. It is heated and supplied as hot dry air into the drum 1 from the outlet 19. An arrow G in FIG. 1 indicates the flow of drying air.

  The outlet 19 is provided in the inner peripheral portion 10 at a position below the rotating shaft 1a of the drum 1 and shifted from the drying detection electrode sensor 12 in the rotating direction of the drum 1 (arrow B direction). The clothes agitated in 1 are brought into contact with the drying air blown out from the outlet 19 after contacting the drying detection electrode sensor 12, and drying by contact with the drying detection electrode sensor 12 is performed. It is set as the structure which can make the detection and the acceleration | stimulation of drying by contact with the air for drying compatible.

  The control means 20 controls the motor 3, the heat pump device 13, etc., and controls the drying operation. The first electrode sensor 11 and the drying detection electrode sensor 12 are connected to the resistance detection means 21, and these pieces of information are input to the control means 20. It is possible to determine whether or not the resistance value is equal to or greater than the threshold by the resistance detection means 21 and to count the number of times that the resistance value is equal to or greater than the threshold.

  For example, if it is possible to count 10 times per second, the value above the threshold is 600 times per minute at maximum. The clothing capacity can be determined by counting the maximum value. Further, using the first electrode sensor 11 for capacity detection and the electrode sensor 12 for drying detection, for example, when the state where the count equal to or greater than the threshold value is 0 continues for 3 minutes, the end of drying can be detected.

  The temperature of the warm air coming out of the drum 1 is detected by the temperature detection means 22 comprising a thermistor provided in the circulation air path 7 and input to the control means 20. As the clothes in the drum 1 are dried, the temperature of the drying air flowing through the circulation air path 7 rises and can be detected by the temperature detection means 22.

  About the clothes dryer comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. First, an object to be dried, such as clothes b, is opened and closed and put into the drum 1 and when the drying operation is started, the motor 3 is driven and the drum 1 and the blower fan 5 rotate to enter the circulation air path 7. A flow of drying air (arrow G) occurs. The drying air takes moisture from the clothes agitated in the drum 1 and becomes humid, and then is guided to the heat absorber 17 of the heat pump device 13 through the circulation air passage 7.

The drying air that has been deprived of heat by the low-temperature refrigerant in the heat absorber 17 is cooled and dehumidified to become dry low-temperature air and is carried to the radiator 15. The amount of heat absorbed by the heat absorber 17 is added to the amount of heat from the compressor 14 and is heated by heat radiation from the high-temperature refrigerant, and is circulated again into the drum 1 from the outlet 19. By repeating the above, the drying of the clothes i progresses.

  Here, the flow at the start of the drying operation will be described in detail with reference to the flowchart of FIG. First, non-dried clothes to be dried are put into the drum 1 (step S0). Next, the dry level and various settings of the clothes dryer are performed, and the drying operation is started by operating the operation button (step S1). When the drying operation is started, the drum 1 starts rotating by the drive of the motor 3, and the drying air heated by the heat pump device 13 is introduced into the drum 1 by the blower fan 5, and the drying air in contact with the clothing a is Blows out from drum 1.

  For about the first 5 minutes after the start of the drying operation, the resistance of the clothing A contacting the first electrode sensor 11 is measured (step S2). The resistance detected by the first electrode sensor 11 for capacitance detection is determined by the resistance detection means 21 whether or not the reciprocal of the resistance value is equal to or greater than a threshold value, and the number of times that the resistance value is equal to or greater than the threshold value is counted. If it is possible to count 10 times per second, the value above the threshold value is a maximum of 600 times per minute. When the maximum capacity of the clothes dryer is 8 kg, the value is about 550 to 600 times.

  The clothing capacity can be determined by counting the maximum value. The maximum count is large when the capacity of the clothing is large, and is small when the capacity of the clothing is small. Due to this relationship, the first electrode sensor 11 provided above the drum 1, that is, a perpendicular line passing through the rotation shaft 1 a of the drum 1, is above the rotation shaft 1 a and opposite to the rotation direction of the drum 1. The first electrode sensor (electrode sensor) 11 provided at a position deviated by a predetermined angle θ1 in the direction detects the resistance of clothes or the like, and counts the number of the threshold value or more in the first predetermined period when the drying operation is started. Thus, it is possible to determine the capacity of the clothes put into the drum 1 (step S3).

  Next, these resistances are measured using the first electrode sensor 11 and the drying detection electrode sensor 12. It is determined whether or not the reciprocal of these resistance values is greater than or equal to a threshold value, and the number of times greater than or equal to the threshold value is counted. It is checked whether or not the count number is equal to or less than a threshold value for a certain period (step S4). For example, it is determined whether or not this count number continues to be 0 for 3 minutes, and if it continues, it can be determined that it has dried (step S5). The delay time after determining the drying based on the clothing capacity detected in the initial stage of the drying operation can be set as a function of the clothing capacity (step S6).

  Normally, the delay time after it is determined to be dry is set to about 5 minutes regardless of the clothing capacity, but the clothing capacity can be detected, and the value is fed back to the delay time, so that the delay time depends on the detected clothing capacity. The automatic setting of 1 to 5 minutes is possible, and when the clothing capacity is medium, for example, 4 kg, it is possible to drive with a delay time of 3 minutes. Thus, the optimal drying with less energy consumption can be completed by using the optimal delay time for the clothing capacity (step S7).

  Also, when 6 kg of clothes such as towels and sheets are dried on the cotton course, the resistance is measured from the frequency of contact with the first electrode sensor 11 in the first minute, and the number of times exceeding the threshold is counted from this resistance. It is possible to detect the capacity of clothing. Thereafter, if the resistance of the first electrode sensor 11 installed at the upper part of the drum 1 and the resistance of the electrode sensor 12 for detection of drying installed at the lower part of the drum 1 is equal to or more than a threshold value for 3 minutes, it is determined to be dry. The later delay time can be automatically set to about 4 minutes according to the clothing capacity of 6 kg.

In this way, the installation position of the first electrode sensor 11 is optimized, and the clothing capacity is accurately detected from the contact frequency of the object to be dried put into the drum 1 in the initial operation with the first electrode sensor 11. be able to. Note that the dry state of the clothes can be detected by the first electrode sensor 11 for detecting the capacitance.

  As described above, the detection of the clothing capacity at the initial stage of the drying operation and the detection of the end of the drying are accurately detected, so that the subsequent delay time can be optimally set according to the clothing capacity. By accurately detecting the clothing capacity and feeding back the value to the delay time, it is possible to automatically set the delay time (for example, 1 to 5 minutes). When the clothing capacity is small, for example, 1 kg, the delay time is set. It becomes possible to drive as 1 minute.

  Next, FIG. 4 shows the relationship between the output obtained from the first electrode sensor 11 installed on the top of the drum 1 and the clothing capacity in the initial stage of the drying operation. The first electrode sensor 11 is connected to the resistance detection means 21 and is input to the control means 20 for processing. The resistance detection means 21 determines whether or not the reciprocal of the resistance value is equal to or greater than the threshold value, and the control means 20 counts the number of times the resistance value is equal to or greater than the threshold value.

  For example, if it is possible to count 10 times per second, the value equal to or greater than the threshold is 600 times per minute, and approximately 550 to 600 times when the maximum capacity of the clothes dryer is 8 kg. Since the vertical axis in FIG. 4 takes the maximum count in 10 seconds within 1 minute, the maximum value is 100. The clothing capacity can be determined by detecting this maximum count.

  That is, the maximum count number is large when the clothing capacity is large, and is small when the clothing capacity is small. Based on this relationship, the first electrode sensor 11 above the drum 1 detects resistance, and the number of clothes equal to or greater than this threshold value in a certain period is counted, thereby determining the capacity of the garment thrown into the drum 1. it can. Now, if two thresholds of the maximum count number are provided, α and β, the clothing capacity can be divided into three levels of state of large, medium and small. Thereby, the delay time after the end of drying is detected can be automatically set according to the level of clothing capacity, and a clothes dryer with high energy saving can be realized.

  First, when the start button is operated, an initial file such as a setting file or a matrix table is read, and then an output from the first electrode sensor 11 is acquired. A capacity determination process is performed using this output. The first electrode sensor 11 acquires one data every 0.1 sec and continuously acquires 600 data for 60 sec. Of these data, data that is equal to or greater than the threshold is counted. In order to detect the maximum number of counts for 10 seconds, the initial minute of driving is divided into six, the maximum number of counts is detected, and the clothing capacity is determined as follows based on a threshold of two or more.

  This is repeated for 5 minutes at the beginning of operation, and determination is performed for each 1 minute. If the same determination result is obtained in each 1 minute, it is OK, but if a different determination result is obtained, the next determination is performed in the same manner, and is repeated periodically for 10 minutes, and the determination capacity value is fed back to the remaining time. Furthermore, the delay time after the drying is completed can be automatically set to a time that matches the determination capacity value.

As described above, when the number of data in which the reciprocal of the contact resistance at the initial stage of drying is higher than the threshold is larger than that of the first electrode sensor 11, it is determined that the capacity of the input clothing is large. Can be a little longer. On the contrary, if the number of data in which the reciprocal of the contact resistance from the first electrode sensor 11 is higher than the threshold is small at the initial stage of drying, it is determined that the capacity of the input clothing is small. It can be made shorter.

  That is, when a non-dried clothing is put into the drum 1 and the drying operation is started, the initial resistance value is detected, and depending on whether the number of data of the reciprocal of this resistance value is small or large, It is possible to determine the capacity of the clothes that have been put in. Moreover, it can be determined that the drying is almost completed by eliminating the number of data from the first electrode sensor 11 at all. Thereby, the delay time after drying can be set according to the capacity of the clothing.

  As described above, the information of the resistance detecting means 21 is taken into the control means 20 and the output variation is recognized and determined, whereby the capacity and dry state of the clothes can be accurately detected. Since the optimum delay time can be automatically set according to the capacity of the clothes, the clothes can be efficiently dried, and the energy saving, accuracy, and reliability with respect to the clothes drying can be surely improved.

  Particularly, in a clothes dryer, heat is applied to the clothes to dry the clothes, so that the amount of energy consumption is large, and it is necessary to reduce this energy consumption as much as possible. Also, since the temperature is high, clothing may be damaged if the time is long, so the drying time should be as short as possible. Therefore, optimizing the delay time after drying by accurately detecting the capacity of the garment is very efficient with respect to drying and can dry garments with excellent energy saving and reliability. it can.

  As described above, in the present embodiment, the first electrode sensor (electrode sensor) 11 provided on the inner peripheral portion 10 so as to come into contact with the object to be dried in the drum 1, and the first electrode sensor 11 The first electrode sensor 11 includes a rotation shaft 1a of the drum 1 and includes a resistance detection unit 21 that detects a resistance value of the object to be dried and a control unit 20 that controls an operation time based on an output of the resistance detection unit 21. Is provided above the rotary shaft 1a and at a position deviated by a predetermined angle in the direction opposite to the rotation direction of the drum 1 with respect to the vertical line C passing through Thus, the amount of the material to be dried put into the drum 1 can be detected linearly, and the installation position of the first electrode sensor 11 can be optimized. Therefore, it is possible to accurately detect the amount and dry state of the object to be dried, set an optimum delay time according to the amount of object to be dried after drying, and efficiently dry the clothes. Energy saving, accuracy and reliability for drying can be improved.

  In the present embodiment, the drying air outlet 19 is provided on the front side of the drum 1 so as to be introduced into the drum 1. However, the drying air is blown from the rear side of the drum 1 to the front side. It can be constituted as follows. In this case, clothes and the like stirred in the drum 1 can be moved to the first electrode sensor 11 provided on the inner peripheral portion 10 by the drying air blown from the rear surface side of the drum 1. The contact with the electrode sensor 11 can be improved. In particular, when the rotating shaft 1a of the drum 1 is tilted forward, the clothes being stirred in the drum 1 are likely to be biased on the rear surface side of the drum 1, so that air is blown from the rear surface side of the drum 1. Thus, the garment can be pressed to the front side, and the garment can be dispersed in the drum 1 to make good contact with the first electrode sensor 11.

  Moreover, although the heat pump apparatus 13 was used for dehumidification and heating of the drying air, it can be performed by a combination of a general air-cooled or water-cooled heat exchanger and a heater.

  In addition to a clothes dryer that only dries clothes and the like, the present invention can also be implemented as a washing and drying machine that has a washing function and can continuously dry washed clothes and the like.

(Embodiment 2)
5 is a view taken along the line EE of FIG. 1 of the clothes dryer according to the second embodiment of the present invention, FIG. 6 is a flowchart showing the operation of the clothes dryer, and FIG. 7 is the clothes dryer. FIG. 8 is a graph showing the relationship between the output obtained from the electrode sensor and the clothing capacity and quality obtained from the electrode sensor of the clothes dryer. The feature of this embodiment is that a second electrode sensor 23 for detecting capacitance is provided in the direction of the diagonal line D with respect to the first electrode sensor 11 around the rotation axis 1a of the drum 1. Other configurations are the same as those of the first embodiment, the same reference numerals are given to the same configurations, and the detailed description of the first embodiment is used.

  The first electrode sensor 11 has a predetermined angle θ1 (for example, above the rotation axis 1a and in a direction opposite to the rotation direction (arrow B direction) of the drum 1 with respect to a vertical line C passing through the rotation axis 1a of the drum 1. , 30 to 45 degrees). The second electrode sensor 23 is provided in the direction of a diagonal line D passing through the first electrode sensor 11 and the rotation shaft 1a. More specifically, the second electrode sensor 23 is near the upper side of the diagonal line, that is, the rotation direction of the drum 1 (arrow (B direction) and a position deviated by a predetermined angle θ2 (for example, 15 to 30 degrees) in the opposite direction.

  Similar to the first electrode sensor 11, the second electrode sensor 23 is composed of a pair of electrode portions 23a and 23b, and is made of a conductive metal and has a rod-like body having a length of about 2 to 10 cm. They are arranged close to each other as being electrically insulated at a predetermined interval. The electrode parts 23a and 23b are installed so that the distance from the rotating shaft 1a of the drum 1 is different, and the electrode part 23a (L3) is configured to be closer to the rotating shaft 1a than the electrode part 23b (L4). Yes.

  Further, a drying detection electrode sensor 12 is installed at a position facing the lower portion of the opening 8 provided on the front side of the drum 1. The first electrode sensor 11, the second electrode sensor 23, and the dry detection electrode sensor 12 are in contact with clothes a and the like to be dried to be agitated in the drum 1 on the surface of the inner peripheral portion 10 on the drum 1 side. It is provided to do.

  The first electrode sensor 11 and the second electrode sensor 23 start the drying operation, and the clothing capacity put into the drum 1 during the initial period of about 1 to 5 minutes after the drum 1 starts rotating. Is detected. By installing in this position, using the correlation between the output from the first electrode sensor 11 and the second electrode sensor 23 and the clothing capacity, if these outputs are large, the clothing capacity is large and the output is small. It can be determined that the clothing capacity is small.

  The first electrode sensor 11, the second electrode sensor 23, and the drying detection electrode sensor 12 are connected to the resistance detection means 21, and these pieces of information are input to the control means 20. It is possible to determine whether or not the resistance value is greater than or equal to the threshold value by the resistance detection means 21 and to count the number of times that the resistance value is equal to or greater than the threshold value. For example, if it is possible to count 100 times per second, the value above the threshold is 6000 times per minute at maximum. The clothing capacity can be determined by counting the maximum value.

  Further, when the dry detection electrode sensor 12 and the first electrode sensor 11 and the second electrode sensor 23 for capacitance detection are used, for example, when the count equal to or greater than the threshold value continues to be 0 for 5 minutes, the drying is finished. Can be detected.

  As described above, if the clothing capacity is detected at the beginning of operation and the end of drying can be accurately detected, the subsequent delay time can be optimally set according to the clothing capacity. Detecting the clothing capacity and feeding back the value to the delay time, for example, allows automatic setting from 1 minute to 10 minutes. When the clothing capacity is small, for example, 2 kg, drive with a delay time of 2 minutes. Is possible.

  Next, the flow in the present embodiment will be described with reference to the flowchart of FIG. First, non-dried clothes to be dried are put into the drum 1 (step S0). Next, the dry level and various settings of the clothes dryer are performed, and the operation button is operated to start the drying operation (step S1). When the drying operation starts, the drum 1 starts to rotate, and the drying air heated by the heat pump device 13 is introduced into the drum 1 from the blowout port 19 by the blower fan 5, and after this drying air comes into contact with the clothing, Blows out from drum 1.

  During the first about 5 minutes after the start of the drying operation, the resistance of the clothing that contacts the first electrode sensor 11 and the second electrode sensor 23 is measured (step S12). The resistance detected by the first electrode sensor 11 and the second electrode sensor 23 for capacitance detection is determined by the resistance detection means 21 to determine whether or not the reciprocal of the resistance value is equal to or greater than a threshold value. Count.

  If it is possible to count 10 times per second, the value above the threshold is 600 times per minute at maximum, and when the maximum capacity of the clothes dryer is 8 kg, it is approximately 550 to 600 times.

  The maximum value is counted, and the clothing capacity and quality can be determined from the correlation between the outputs of the first electrode sensor 11 and the second electrode sensor 23 and the clothing capacity (step S13). This maximum count is large when the clothing capacity is large, and is small when the clothing capacity is small.

  Based on this relationship, the resistance is detected using the first electrode sensor 11 and the second electrode sensor 23, and the number equal to or greater than the threshold value in a certain period is periodically counted for 10 minutes, and then the drum 1 is loaded. The capacity of clothing and the quality of clothing can be determined (step S14).

  Next, the resistance is measured using the dry detection electrode sensor 12, the capacitance detection first electrode sensor 11, and the second electrode sensor 23. It is determined whether or not the reciprocal of these resistance values is greater than or equal to a threshold value, and the number of times greater than or equal to the threshold value is counted. It is checked whether or not the count number is equal to or less than a threshold value for a certain period (step S15).

  For example, it is determined whether or not this count number continues to be 0 for 5 minutes, and if it continues, it can be determined that it has dried (step S5). Based on the volume of clothing detected in the early stage of drying, the delay time after determining that it is dry can be set as a function of the volume and quality of clothing (step S6). The subsequent steps are the same as in the first embodiment.

  For example, when 5 kg of clothes such as towels and sheets are dried on a cotton course, the resistance is measured from the frequency of contact with the first electrode sensor 11 and the second electrode sensor 23 in the first minute or so, and the threshold value is determined from this resistance. By counting the number of times described above, the capacity of clothing or the like can be detected. After that, from the resistance of the first electrode sensor 11 and the second electrode sensor 23, it is determined that it is dry if the threshold is 5 minutes or more, and the time after the delay time after drying is adjusted to the clothing capacity 5 kg, for example, It can be automatically set to about 6 minutes.

  As described above, the first electrode sensor 11 and the second electrode sensor 23 are optimized by optimizing the installation positions of the first electrode sensor 11 and the second electrode sensor 23, and the first electrode sensor 11 and the second electrode sensor in the initial operation of the object to be dried put in the drum 1. From the contact frequency to 23, the clothing capacity can be accurately detected, and the quality of the thrown-in clothing can also be determined. Note that if the first electrode sensor 11 and the second electrode sensor 23 for capacity detection are shared for dryness detection, the dry state can always be detected.

FIG. 7 shows the relationship between the output obtained from the first electrode sensor 11 and the second electrode sensor 23 and the clothing capacity in the initial stage of the drying operation. The first electrode sensor 11 and the second electrode sensor 23 are connected to the resistance detection means 21 and further input to the control means 20 for data processing.

  The resistance detection means 21 determines whether or not the reciprocal of the resistance value is equal to or greater than the threshold value, and the control means 20 counts the number of times the resistance value is equal to or greater than the threshold value. For example, if it is possible to count 10 times per second, the value equal to or greater than the threshold is 600 times per minute, and approximately 550 to 600 times when the maximum capacity of the clothes dryer is 8 kg. Since the vertical axis in FIG. 7 takes the maximum count in 10 seconds within 1 minute, the maximum value is 100. The clothing capacity can be determined by detecting this maximum count.

  That is, the maximum count number is large when the clothing capacity is large, and is small when the clothing capacity is small. In the case of the first electrode sensor 11, this relationship is such that the maximum count number increases rapidly when the clothing capacity is small to medium, and is substantially the same for the clothing capacity beyond that. In the case of 23, the maximum count number increases rapidly when the clothing capacity is medium to large, and the clothing capacity below that is almost the same.

  Based on this relationship, resistance is detected using the first electrode sensor 11 at the upper part of the drum 1 and the second electrode sensor 23 at the lateral part of the drum 1, and the number equal to or greater than the threshold value in a certain period is counted. Thus, the capacity of the garment put into the drum 1 can be determined.

  Now, by providing two thresholds for the maximum count number A and B, and further providing two thresholds for the difference between the outputs from the first electrode sensor 11 and the second electrode sensor 23, C and D. The capacity can be divided into three levels: many, medium, and few. Thereby, the delay time after the end of drying is detected can be automatically set according to the level of clothing capacity, and a clothes dryer with high energy saving can be realized.

  As a method for performing the capacity determination process using the outputs from the first electrode sensor 11 and the second electrode sensor 23, there are the following methods. The first electrode sensor 11 at the top of the drum 1 and the second electrode sensor 23 at the side of the drum 1 acquire 1 data every 0.1 sec and continuously acquire 600 data for 60 sec.

  Of these data, data that is equal to or greater than the threshold is counted. In order to detect the maximum number of counts for 10 seconds, the initial minute of driving is divided into six, the maximum number of counts is detected, and the clothing capacity is determined as follows based on a threshold of two or more.

This is repeated for 5 minutes at the beginning of operation, and determination is performed for each 1 minute. If the same determination result is obtained in each 1 minute, it is OK, but if a different determination result is obtained, the next determination is performed in the same manner, and is repeated periodically for 10 minutes, and the determination capacitance value is fed back to the remaining time. Furthermore, the delay time after the drying is completed can be automatically set to a time that matches the determination capacity value.

  As described above, by using a plurality of capacity detection sensors at the start of driving, it is possible to improve the accuracy of detecting the clothes capacity efficiently and at low cost. Further, the capacity detection sensor can be used as a drying detection sensor during the drying operation. By using it, the detection accuracy of the end of drying can be improved efficiently.

  In particular, if there are a large number of data in which the reciprocal of the initial contact resistance of the drying operation using the electrode sensors installed on the top and the side of the drum 1 is higher than a threshold value, it is determined that the capacity of the input clothing is large. The final delay time can be made slightly longer than the set value. On the contrary, in the initial stage of the drying operation, if the number of data in which the reciprocal of the contact resistance from the electrode sensor is higher than the threshold is small, it is determined that the capacity of the input clothing is small, so the final delay time after drying is set from the set value. Can be shortened.

  That is, when a non-dried clothing is put into the drum 1 and the drying operation is started, the initial resistance value is detected, and the number of data of the reciprocal of the resistance value is small or large, and the absolute value of these data It is possible to determine the capacity of the clothes a put in the drum 1 based on the difference in values. Moreover, it can be determined that the drying is almost completed when the number of data from the electrode sensor is completely lost. From these, the delay time after drying can be set according to the capacity of the clothing.

  Next, FIG. 8 shows the relationship between the output obtained from the first electrode sensor 11 and the second electrode sensor 23 and the clothing capacity and quality. The direction from the upper left to the lower right corresponds to the capacity of the clothing, and the direction from the lower left to the upper right corresponds to the quality of the clothing. The capacity of clothing increases from the upper left to the lower right, and the clothing quality corresponds to light clothing from the lower left to the upper right.

  That is, the area a represents cotton clothing, and the area b represents synthetic clothing such as a jersey. Moreover, the area | region of c has shown the lightest silk clothing. In this way, by comparing the outputs from the two sets of the first electrode sensor 11 and the second electrode sensor 23, the quality of the thrown clothes can be detected. Moreover, the delay time after drying can be set from the quality of the clothing determined in this way. For example, when it is determined that silk, it can be set shorter than the normal delay time.

  As described above, in the present embodiment, the second electrode sensor 21 is provided on the inner peripheral portion 10 so as to be in contact with the material to be dried in the drum 1, and the second electrode sensor 21 is a rotation of the drum 1. The first electrode sensor 11 is provided in a diagonal direction around the axis 1a so as to come into contact with an object to be dried in the drum 1, and by recognizing and determining output fluctuations of the plurality of electrode sensors, The clothes volume and quality can be detected with high accuracy, the dry state can be detected, the delay time can be optimally set according to the clothes capacity after drying, and the drying can be performed efficiently.

Further, in the present embodiment, the opening 8 provided on the front surface side of the drum 1, the inner peripheral portion 10 provided in the front portion of the housing 2 so as to face the opening 8, and the dry matter in the drum 1 Resistance values of the first electrode sensor 11 and the second electrode sensor 23 provided on the inner peripheral portion 10 so as to come into contact with an object, and the object to be dried that is in contact with the first electrode sensor 11 and the second electrode sensor 23 The first electrode sensor 11 is rotated with respect to a vertical line passing through the rotating shaft 1a of the drum 1. The resistance detecting means 21 for detecting the resistance and the control means 20 for controlling the operation time by the output of the resistance detecting means 21 are provided. The second electrode sensor 23 is provided at a position above the shaft 1 a and deviated by a predetermined angle in the direction opposite to the rotation direction of the drum 1, and the second electrode sensor 23 is centered on the rotation shaft 1 a of the drum 1. The control means 20 is provided with a resistance detecting hand. When the information obtained from 21 is equal to or greater than a predetermined threshold and the resistance change exhibits a predetermined behavior, it is determined that the final drying is performed, and the final delay time after drying is determined based on the volume and quality of the obtained dried material. It is set as a function of the capacity and quality of the dry matter. By taking the information of the resistance detection means and recognizing and judging these output fluctuations, the capacity of the clothing, the quality of the clothing, and the dry state are determined. It is possible to accurately detect, to accurately determine the end of drying, and to set an optimal delay time according to the capacity and quality of clothing, thereby efficiently drying the clothing.

(Embodiment 3)
9 is a view taken along the line EE of FIG. 1 of the clothes dryer according to the third embodiment of the present invention, and FIG. 10 is a cross-sectional view taken along the line HH of FIG. The feature of this embodiment is that the first electrode sensor 11 and the second electrode sensor 23 are provided with a pair of electrode portions in the circumferential direction of the drum 1 so that the distance from the rotation shaft 1a of the drum 1 is substantially equal. The height of one electrode part that is disposed so as to face and to be dried that rotates in the drum 1 is lower than the height of the other electrode part. Other configurations are the same as those in the first and second embodiments, the same reference numerals are given to the same configurations, and the detailed description uses those in the first and second embodiments.

  The electrode portions 11a and 11b of the first electrode sensor 11 and the electrode portions 23a and 23b of the second electrode sensor 23 are arranged so that the distance (L5) from the rotating shaft 1a of the drum 1 is substantially the same. The height h1 of one of the electrode portions 11a and 23a, which is oppositely disposed with a predetermined interval in the circumferential direction of one, that is, in the rotational direction, and the object to be dried that rotates in the drum 1 first comes into contact with the other The heights h2 of the electrode portions 11b and 23b are lower.

  That is, the electrode part 11a located below the first electrode sensor 11 has a height h1 protruding from the surface of the inner peripheral part 10 toward the drum 1 side lower than the height h2 of the electrode part 11b located above the electrode part 11a. doing. Moreover, the electrode part 23a located above the second electrode sensor 23 has a height h1 protruding from the surface of the inner peripheral part 10 toward the drum 1 side lower than the height h2 of the electrode part 23b located below the electrode part 23a. doing.

  When the drum 1 rotates in the direction indicated by the arrow B during the drying operation, clothes to be dried in the drum 1 also rotate in the same direction, and with respect to the first electrode sensor 11, the electrode portion positioned below The object to be dried first comes into contact with 11a, and the electrode part 11b disposed close to and opposite to the electrode part 11a is higher than the electrode part 11a, and the object to be dried is reliably brought across the electrode parts 11a and 11b. be able to.

  Similarly, with respect to the second electrode sensor 23, an object to be dried is first brought into contact with the electrode portion 23a located above, and the electrode portion 23b disposed close to and opposed to the electrode portion 23a is an electrode portion. It is higher than 23a, and to-be-dried object can be made to contact reliably across electrode part 23a, 23b.

  As described above, the first electrode sensor 11 and the second electrode sensor 23 have a pair of electrode portions 11a and 11b in the circumferential direction of the drum 1 so that the distance from the rotation shaft 1a of the drum 1 is substantially equal. And 23a and 23b are opposed to each other, and the height of one of the electrode portions 11a and 23a with which the object to be dried rotating in the drum 1 comes into contact is made lower than the height of the other electrode portions 11b and 23b. Therefore, the object to be dried rotating in the drum 1 can be accurately brought into contact with the electrode sensor, the clothes capacity and quality can be detected accurately, and the dry state can be detected.

  The dryness detection electrode sensor 12 can also detect the dry state with high accuracy by adopting the same configuration as the first electrode sensor 11 and the second electrode sensor 23.

(Embodiment 4)
FIG. 11 is a flowchart showing the operation of the clothes dryer in the fourth embodiment of the present invention. The feature of the present embodiment is that the clothing capacity and quality are periodically determined, and the remaining time display is fed back based on the determination result, which is detected by the first electrode sensor 11 and the second electrode sensor 23. After the change of the resistance value shows a predetermined behavior, a delay time suitable for the clothing capacity and quality is displayed. Other configurations are the same as those of the second embodiment, the same reference numerals are given to the same configurations, and the detailed description of the second embodiment is used.

  Next, the flow in the present embodiment will be described with reference to the flowchart of FIG. First, non-dried clothes to be dried are put into the drum 1 (step S0). Next, the dry level and various settings of the clothes dryer are performed, and the drying operation is started by operating the operation button (step S1). When the drying operation starts, the drum 1 starts to rotate, and the drying air heated by the heat pump device 13 is introduced into the drum 1 by the blower fan 5. It blows out to the circulation air path 7.

  During the first about 5 minutes after the start of the drying operation, the first electrode sensor 11 and the second electrode sensor 23 measure the resistance of the clothing in contact (step S22). The resistance detected by the first electrode sensor 11 and the second electrode sensor 23 for capacitance detection is determined by the resistance detection means 21 to determine whether or not the reciprocal of the resistance value is equal to or greater than a threshold value. Count.

  If it is possible to count 10 times per second, the value above the threshold is 600 times per minute, and in the case of a clothes dryer having a maximum capacity of 8 kg, it is approximately 550 to 600 times.

  The maximum value is counted, and the clothing capacity and quality can be determined from the correlation between the output of the first electrode sensor 11 and the second electrode sensor 23 and the clothing capacity (step S23). Based on the obtained clothing capacity, the display is fed back to the remaining drying time display, and the remaining time display is updated (step S24). Next, it is determined whether or not a predetermined time has elapsed, and if not, the capacity determination is performed again (step S25). This maximum count number is large when the clothing capacity is large, and is small when the clothing capacity is small.

  Based on this relationship, the resistance is detected using the first electrode sensor 11 and the second electrode sensor 23, and the number equal to or greater than the threshold value in a certain period is periodically counted for 10 minutes, and then the drum 1 is loaded. The capacity of clothes and the quality of clothes can be determined.

  Next, the resistance is measured using the dry detection electrode sensor 12, the first electrode sensor 11, and the second electrode sensor 23. It is determined whether or not the reciprocal of these resistance values is greater than or equal to a threshold value, and the number of times greater than or equal to the threshold value is counted. It is checked whether or not the count number is equal to or less than a threshold value for a certain period (step S26).

  For example, it is determined whether or not this count number continues to be 0 for 5 minutes, and if it continues, it can be determined that it has dried (step S5). The delay time after determining the drying based on the clothing volume detected in the early stage of drying can be set as a function of the clothing capacity and quality (step S6). The subsequent steps are the same as in the first embodiment.

  For example, when 3 kg of cotton clothes such as towels and sheets are dried on a cotton course, the resistance is measured from the frequency of contact with the first electrode sensor 11 and the second electrode sensor 23 in the first minute or so. By counting the number of times equal to or greater than the threshold value, the capacity of clothing or the like can be detected. Thereafter, if the resistance of the first electrode sensor 11 and the second electrode sensor 23 is equal to or greater than the threshold value for 5 minutes, it is determined to be dry, and the time after the delay time after drying is adjusted to 3 kg of clothing capacity is about 4 Can be automatically set to minutes.

Thus, the installation positions and directions of the first electrode sensor 11 and the second electrode sensor 23 are optimized, and the first electrode sensor 11 and the second electrode sensor 2 in the initial operation of the object to be dried put in the drum 1 are used. From the frequency of contact with the electrode sensor 23, the capacity of the clothes can be accurately detected, and the quality of the clothes put in can be determined. If the first electrode sensor 11 and the second electrode sensor 23 are commonly used for dryness detection, the dry state can always be detected.

  In addition, the clothing capacity determination is performed at the initial stage of drying, and the display is performed on the liquid crystal screen based on the result. The update of the remaining time display after the clothing capacity determination is performed may be as follows.

Note that the normal initial remaining time is about 2 h.

  The relationship between the output obtained from the first electrode sensor 11 and the second electrode sensor 23 and the clothing capacity in the initial stage of the drying operation is as shown in FIG.

  As described above, the temperature detection means 22 for detecting the temperature of the drying air is provided, and the control means 20 periodically determines the clothing capacity and quality until the temperature detection means 22 reaches a predetermined temperature. Based on the result, feedback is made to the remaining time display, and after the change of the resistance value detected by the first electrode sensor 11 and the second electrode sensor 23 shows a predetermined behavior, the delay time according to the clothing capacity and quality The information of the temperature detecting means 22 and the resistance detecting means 21 is taken into the control means 20, and the output fluctuations are recognized and determined, whereby the capacity of clothes, the quality of clothes, the drying The condition can be accurately detected, the remaining time can be displayed accordingly, and the end of drying can be accurately determined, so it is optimal for the capacity and quality of clothing. To set the delay time, it can be efficiently carried out the drying of the clothes, energy saving for drying clothes, in which accuracy, it is possible to reliably improve the reliability.

  In the operation method of the clothes dryer of the present invention, the detection step of detecting the volume of clothes and the quality of clothes, the determination step of determining the dry state after the detection step, the detection result and the determination result The present invention provides a program for causing a computer to execute at least a part of a drying process for feedback and controlling a delay time after drying of the clothes dryer.

  Since these control methods are programs, at least a part of the operation method of the clothes dryer of the present invention can be easily realized by cooperating hardware resources such as electricity, information equipment, a computer, and a server. Further, by recording on a recording medium or distributing a program using a communication line, it is possible to easily distribute, update, and install the program.

  As described above, the clothes dryer according to the present invention can accurately detect the volume of the material to be dried put in the drum, and the delay time after drying is optimized according to the amount of the material to be dried. Since it can set and dry efficiently, it is useful as a clothes dryer.

DESCRIPTION OF SYMBOLS 1 Drum 1a Rotating shaft 2 Case 3 Motor 8 Opening part 10 Inner peripheral part 11 1st electrode sensor (electrode sensor)
20 Control means 21 Resistance detection means 23 Second electrode sensor

Claims (9)

A drum provided rotatably in the housing, a motor for rotating the drum, an opening provided on the front side of the drum, and an inner portion provided in the front portion of the housing facing the opening. A peripheral portion, an electrode sensor provided on the inner peripheral portion so as to be in contact with an object to be dried in the drum, a resistance detection means for detecting a resistance value of the object to be dried which is in contact with the electrode sensor, and the resistance detection Control means for controlling the operation time by the output of the means, and the electrode sensor is above the rotation shaft and in a direction opposite to the rotation direction of the drum with respect to a perpendicular passing through the rotation shaft of the drum. A clothes dryer provided at a position deviated to a predetermined angle. A second electrode sensor is provided on the inner periphery, and the second electrode sensor is provided in a diagonal direction with respect to the rotation axis of the drum so as to be in contact with an object to be dried in the drum. Item 1. A clothes dryer according to item 1. The electrode sensor and the second electrode sensor are arranged with a pair of electrode portions facing each other in the circumferential direction of the drum so that the distances from the rotation axis of the drum are substantially equal, and rotate within the drum. The clothes dryer according to claim 1 or 2, wherein a height of one of the electrode portions with which the object to be dried comes into contact is lower than a height of the other electrode portion. Based on the information obtained from the resistance detection means, the control means detects the volume of the non-dried material to be dried put in the drum from the resistance value state in the initial operation, and then obtains the capacity from the resistance detection means. The clothes dryer according to any one of claims 1 to 3, wherein a dry state is detected based on information to be set, and a delay time after drying is set. The control means compares the information of the resistance value at the initial stage of operation obtained from the resistance detection means with two or more threshold values, and divides the information into three or more clothing capacity states. The clothes dryer as described in. The control means detects the resistance value by the electrode sensor and the second electrode sensor, and determines the capacity and quality of the object to be dried from the difference between the output from the electrode sensor and the second electrode sensor and the absolute value. The clothes dryer according to any one of claims 2 to 5. The control means determines that the information obtained from the resistance detection means is equal to or greater than a predetermined threshold value, and that the resistance change exhibits a predetermined behavior as final drying, and based on the obtained capacity and quality of the object to be dried. The clothes dryer according to any one of claims 2 to 6, wherein a final delay time after drying is set as a function of a capacity and quality of an object to be dried. The clothes dryer according to any one of claims 2 to 7, wherein the control means does not change a threshold value for information obtained from the resistance detection means even when the set value of the drying level is changed. Temperature detection means for detecting the temperature of the drying air is provided, and the control means periodically determines the clothing capacity and quality until the temperature detection means reaches a predetermined temperature, and the remaining time based on the determination result The delay time suitable for clothing capacity and quality is displayed after the change of the resistance value detected by the electrode sensor and the second electrode sensor shows a predetermined behavior after feedback on the display. The clothes dryer of any one of Claims.