JP2014057767A - Drum type washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately detect a dryness degree of clothes and precisely set a drying correction time.SOLUTION: The drum type washing and drying machine includes: an outside air introduction amount adjusting part 8; an electrode 9; a detector 104 for detecting a degree of dryness of clothes; a determination part 103 for determining a degree of dryness of clothes from conductive characteristics between a rotary tub 2 and an electrode 9; a dryness factor recording part 102 retaining dryness factors for respective amounts of clothes; a first tilt recording part 106 for retaining a degree of drying progress for each amount of clothes in the case where a heating part 5 is operated; a second tilt recording part 108 for retaining a degree of drying process which varies in accordance with an introduction amount of outside air per unit time in the case where the heating part 5 is stopped; a clothes amount determination part 105; and a correction time calculation part 107 for calculating a drying correction operation time after a determination of dryness. The correction time calculation part 107 determines a correction time in a drying process after the detection and determination of dryness in accordance with the amount of clothes and the degree of dryness detected by the determination part 103 in the case where the heating part 5 is operated or stopped during a drying operation.

Description

  The present invention relates to a drum-type washing and drying machine that detects the degree of drying of clothes during drying and automatically determines the end of drying.

  Conventionally, this type of drum type washing and drying machine is provided with electrodes in a washing tub, and the degree of drying is determined based on the resistance value and the contact frequency of clothing contacting between the electrodes. In general, the drying operation is controlled so as to be super high.

  In addition, in order to determine whether or not the clothes in the washing tub is dry, by stopping the rotating tub every certain period and measuring the amount of clothes at that time, how much lighter from the initial state, that is, It has been considered that the degree of drying is determined from the reduced amount of water and the drying time is determined (see, for example, Patent Document 1).

  FIG. 7 is a control block diagram of the conventional washing and drying machine described in Patent Document 1, and FIG. 8 is a time change diagram of the amount of cloth in the drying process. A motor 201 for driving the rotating tub of the washing and drying machine is driven by the control means 202, and a position detecting means 203 for detecting the position of the rotor of the motor 201 necessary for the driving is provided, and the motor 201 is provided at regular intervals during the drying operation. Each time, the cloth amount detecting means 204 detects the cloth amount of the clothes in the rotating tub based on the signal from the position detecting means 203. In this case, the clothing is detecting the apparent amount of cloth in the wet state.

  In the drying process, when the rotation tank is stopped at regular intervals and the change in the amount of cloth is detected by a signal from the rotor position detection means 203 of the motor 201, as shown in FIG. The apparent cloth amount changes with the drying operation time by the heater.

  The change amount of the cloth amount for each fixed period indicates the change amount for each 10 minutes. Change amount of fabric amount ΔT10 before start of drying and 10 minutes after start, change amount of fabric amount ΔT30 after start 20 minutes after start 30 minutes, change amount of fabric amount 60 minutes after start 50 minutes after start ΔT60, the change amount ΔT80 of the cloth amount 70 minutes after the start and 80 minutes after the start, and the change amount ΔT100 of the cloth amount 100 minutes after the start 90 minutes after the start.

  By measuring the amount of change in the amount of cloth at regular intervals, the degree of drying can be grasped by decreasing the amount of change in the amount of cloth with respect to the elapsed time. For example, the amount of change ΔT10 10 minutes after the start of the drying process is small because the amount of heat required for the clothes to be warmed by the heater is small and the decrease in moisture is small. The amount of change ΔT30 from 20 minutes to 30 minutes after the next start is large because the amount of water is greatly reduced.

  However, since the amount of water that evaporates decreases when the clothes are near the end of drying, the amounts of change ΔT80 and ΔT100 are smaller than the amount of change ΔT60. As a result, it can be determined whether or not it is dry.

JP 2004-148053 A

  However, in the conventional configuration, the rotation tank is stopped every fixed period of the drying process, and the cloth amount is measured every time. Therefore, it is necessary to extend the drying time, and the stop and start during the drying time. Therefore, there is a problem that the amount of power consumption increases. In addition, since the amount of water contained in the clothes varies depending on the number of spins to be dehydrated and the time for dehydration before the drying process, the number of stops per fixed time may increase, which increases power consumption and extends the drying time. .

  Further, by stopping the rotating tank in the middle of the drying process, the drying air heated by the heater partially strikes the clothes, and thus uneven drying of the clothes occurs. For example, if the heater or drying air blowing is stopped when the rotating tub is stopped, the temperature in the rotating tub decreases during the stop, so that the evaporated water adheres to the clothing again and the drying time is further extended. It becomes.

  The present invention solves the above-mentioned conventional problems, and is a drum type washing and drying machine capable of accurately detecting the degree of drying of clothes and accurately setting the drying correction time without stopping the rotating tub during the drying process. The purpose is to provide.

  In order to solve the above-mentioned conventional problems, a drum-type washing / drying machine according to the present invention includes a rotating tub having conductivity, a motor for driving the rotating tub, and a rotatable rotating tub. A washing tub, a heating unit that heats the drying air, an induction motor that drives a compressor of the heating unit, a blowing unit that blows the drying air heated by the heating unit into the washing tub, and outside air The outside air introduction amount adjusting unit for taking in, the electrode provided at the front of the washing tub, the detection unit for detecting the degree of drying of the clothing, and the degree of drying of the clothing from the conductive characteristics between the rotating tub and the electrode A determination unit that determines the drying rate, a drying rate recording unit that holds in advance a drying rate for each clothing volume when the determination unit determines to dry, and a clothing before washing when the heating unit is in operation. Maintains the degree of progress of drying per unit time for each volume A first inclination recording section and a second inclination recording that retains the degree of drying progress that changes in accordance with the outside air introduction amount per unit time for each clothing volume before washing when the heating section is stopped. A correction amount calculating unit that calculates a drying correction operation time after the determination unit determines that the clothes are dry, and a control unit that controls the airframe, and the correction time. When the heating unit is activated and stopped during the drying operation, the calculation unit calculates the drying after the dryness detection determination of the determination unit based on the clothing amount detected by the clothing amount determination unit and the dryness level detected by the determination unit. The correction time for the process is determined.

  Thereby, the drying rate at the time of detecting the drying and the operation time after the detection of the drying can be easily determined according to the detected amount of clothes. It is also possible to take in outside air at the outside air introduction amount adjustment unit and dry it to suppress the temperature rise of the heating unit, and in that case, grasp the degree of progress of drying when introducing outside air and drying only by air blowing Thus, even when the heating unit is activated and stopped, the dry correction time after the dry detection can be easily estimated. In addition, since the drying operation time can be determined by the detection of drying by the electrode regardless of the dehydration rate before the drying process, which affects the dehydration speed and the dehydration time in the dehydration process, it is included in the cloth quality and clothing. It is not necessary to detect a change in the amount of moisture, and the drying operation time depending on the clothing capacity can be determined. as a result. It is not necessary to stop the operation during the drying process and check the degree of drying.

  The drum type washing and drying machine of the present invention accurately detects the degree of drying of clothes without stopping the rotating tank in the middle of the drying process, sets the drying correction time accurately, shortens the operation time and saves energy. Can do.

The block diagram which showed the principal part of the drum type washing-drying machine in Embodiment 1 of this invention in the cross section An exploded perspective view of the main part of the drum type washing and drying machine Enlarged view of part A in Fig. 2 of the drum type washing and drying machine Control block diagram of the drum type washer / dryer Change rate of drying rate for each clothing capacity of the drum type washing and drying machine Figure of change in drying rate over time when the outside air introduction amount adjustment unit is used Control block diagram of a conventional washer / dryer Time variation diagram of the amount of cloth in the drying process of the washing dryer

  1st invention is the rotation tank which has the electroconductivity which accommodates clothing, the motor which drives the rotation tank, the washing tub which included the rotation tank rotatably, and the heating part which heats the air for drying , An induction motor that drives the compressor of the heating unit, a blowing unit that blows the drying air heated by the heating unit into the washing tub, an outside air introduction amount adjustment unit that takes in outside air, and the washing tub The electrode provided in the front part, the detection part which detects the dryness of clothes, the judgment part which judges the dryness of clothes from the conductive characteristic between the rotation tank and the electrode, and the judgment part judged dryness A drying rate recording unit that holds the drying rate for each clothing volume in advance, and when the heating unit is operated, a drying progress degree per unit time is previously held for each clothing volume before washing. When the inclined recording unit and the heating unit are stopped In addition, a second inclination recording unit that retains the degree of drying progress that changes in accordance with the amount of outside air introduced per unit time for each clothing volume before washing, a clothing amount determination unit that detects the amount of clothing, and the determination unit A correction time calculation unit that calculates a dry correction operation time after it is determined to be dry, and a control unit that controls the airframe, and the correction time calculation unit is configured to operate and stop the heating unit during a drying operation. In addition, the temperature of the heating unit is determined by determining the correction time of the drying process after the drying detection determination of the determination unit from the amount of clothes detected by the clothing amount determination unit and the degree of drying detected by the determination unit. Drying when the heating unit is stopped and the operation is repeated and the operation is repeated, and even when outside air is taken in by the outside air introduction amount adjustment unit, the outside air is introduced and drying is performed only by blowing. By knowing the degree of line in advance, by detecting the clothing capacity by the amount of cloth, the rotation rate can be detected stably for each clothing volume by the rotating tank and the paired annular electrodes at the time of drying detection. The subsequent drying time can be easily determined from the adjustment amount of the outside air introduction amount adjustment unit from the time of detection, and the drying rate can be stably exceeded by 100%. As a result, the correction time after detection of drying can be easily determined only by detecting the clothing volume before washing, and it is not necessary to stop during drying. Even when the heating unit repeats operation and stoppage, the combined inclination value of the first inclination recording unit and the second inclination recording unit is predicted during the operation of the heating unit, and the second inclination recording is performed while the heating unit is stopped. By predicting with the inclination value of the part, it is possible to calculate the correction time up to 100% of the drying rate, and to perform highly accurate drying detection.

  In the second aspect of the invention, in particular, the second inclination recording unit of the first aspect of the present invention maintains the degree of progress of drying that changes according to the amount of outside air introduced by the outside air introduction amount adjusting unit. When the introduction amount adjusting unit adjusts the amount of outside air taken into the drying air passage, the drying time can be easily determined by grasping the degree of drying progress for each adjustment amount. Therefore, it is possible to easily calculate the correction time after drying detection according to the outside air intake amount of the outside air introduction amount adjusting unit regardless of the operation until the drying detecting means detects the drying.

  In the third invention, in particular, the heating unit of the first or second invention is constituted by a constant speed heat pump device that drives the compressor with an induction motor, so that the induction motor is highly economical, Since the drive device can also be easily configured, it is possible to realize a configuration with simple controllability and high economic efficiency.

  According to a fourth aspect of the present invention, in particular, the electrode of any one of the first to third aspects has a certain distance in front of the one of the electrodes grounded via the bearing of the rotating shaft of the rotating tub and the rotating tub. It is arranged in parallel with the other electrode provided annularly around the opening provided in the front part of the washing tub, so that the clothes in the rotating tub rotate, such as the upper and lower parts when rotating Even if it moves to any position, the contact frequency of drying detection can be increased by arranging the clothing on the front surface portion by blowing air from the back surface portion of the rotating tub. Therefore, the clothes can be stably contacted with the electrodes, and the dryness detection accuracy can be improved.

  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 block diagram showing a cross section of a main part of a drum-type washing / drying machine according to a first embodiment of the present invention, FIG. 2 is an exploded perspective view of the main part, and FIG. 3 is a part A of FIG. FIG. 4 is a control block diagram of the drum type washing and drying machine, and FIG. 5 is a time change of the drying rate for each clothing capacity of the drum type washing and drying machine, and the heating unit is stopped and only the blowing unit is operated. Fig. 6 shows the change in the drying rate and the performance of the heat pump device at a fixed capacity (for example, 3 kg of clothes) of the drum-type washing and drying machine when the outside air introduction amount is sometimes adjusted to be small. It is a drying rate time change figure according to drying performance which shows a drying rate change at the time of changing a drying rate change and the amount of outside air introduction.

  1 to 3, a main body 1 of a drum-type washing and drying machine has an opening 2a on the front side to store clothes i and has conductivity, for example, a metal rotating tub 2 and the rotating tub 2 For example, and has a washing tub 3 made of synthetic resin that does not have electrical conductivity. A heat pump device (heating unit) 5 connected in communication with the washing tub 3 in front of the pipe line 4 and a blower unit 7 connected to the washing tub 3 in communication with the heat pump device 5 through the pipe line 6 are provided. Have.

  An outside air introduction amount adjusting unit 8 that introduces outside air from the outside of the main body 1 is provided in the middle of the duct 4 between the washing tub 3 and the heat pump device 5. The rotating tub 2 is rotationally driven by the motor 11 as instructed by the control unit 10.

  The pipe front 4 is an air passage that sends air from the washing tub 3 to the heat pump device 5, and the pipe rear 6 is an air passage that sends air from the heat pump device 5 to the washing tub 3. The blower unit 7 is configured by a fan unit including a blower fan and a fan motor that drives the blower fan.

  The clothes a in the rotary tub 2 are lifted in the rotation direction by a baffle (not shown) provided in the rotary tub 2 and receive wind by the flow of the blower from the blower 7 that blows out from the rear part of the rotary tub 2. And a lid that constitutes one electrode (electrode A) and the other electrode (electrode B) that is annularly provided at the front of the washing tub 3 and is pushed in the forward direction of the rotator 2 By making contact with the back plate 9, the conductive property of the wet clothing i is detected.

  That is, one of the electrodes (electrode A) is composed of a conductive metal rotating tank 2 grounded via a bearing (not shown) of the rotating shaft 2b of the rotating tank 2, and the rotating tank 2 Is provided in front of the washing tub 3 with a space d of a certain distance in front of the tub 2 and arranged in parallel with the front surface of the rotating tub 2 so as to face the opening 2a for putting clothes in the front surface of the rotating tub 2. For example, the other electrode (electrode B) is constituted by a lid back plate 9 formed in a ring shape with a circular metal plate, for example.

In the heat pump device 5, the blower air blown into the washing tub 3 through the post-pipe 6 by the blower 7 passes through the rotary tub 2 and comes into contact with the clothes a and includes humidity before the pipe 4. The air that has returned via the air is dehumidified and heated by the heat exchanger 53 and is blown again from the blower unit 7.

  At that time, in order to take in low-temperature air from the outside of the main body 1, an outside air introduction amount adjustment unit 8 is provided in the middle of the pipe front 4, and when the air containing humidity returns from the rotary tank 2, the outside air In addition, the heat pump apparatus 5 is configured to be taken in a cooled state. At this time, the outside air introduction amount adjustment unit 8 is configured to adjust the amount of outside air taken in by a command from the control unit 10.

  Here, the drive motor in the compressor 51 of the heat pump device 5 is the constant-speed induction motor 52, but the same configuration can be realized as a variable-speed motor driven by an inverter.

  The control unit 10 includes a drive unit 101 that drives the induction motor 52 of the compressor 51 of the heat pump device 5, a clothing amount determination unit 105 that determines the amount of clothing stored in the rotating tub 2, and one electrode (electrode) A detection unit 104 that detects the degree of dryness of the clothing from the conductive characteristics between the rotating tub 2 that constitutes A) and the lid back plate 9 that constitutes the other electrode (electrode B), and the clothing from the detection result of the detection unit 104 A determination unit 103 that determines the degree of dryness of a, and a drying rate recording unit 102 that records in advance the drying rate for each clothing capacity that the determination unit 103 determines to be dry.

  In addition, the control unit 10 includes a first inclination recording unit 106 that stores in advance the degree of drying progress per unit time as data, a determination value of the clothing amount determination unit 105, a degree of drying progress of the first inclination recording unit 106, and a determination unit. There is a correction time calculation unit 107 that calculates the remaining time until the drying rate exceeds 100% from the drying rate of the drying rate recording unit 102 for each clothing capacity when 103 is determined to be dry.

  Furthermore, the second inclination recording unit 108 changes the time rate of each drying rate according to the adjustment amount of the outside air introduction amount adjustment unit 8 when the heat pump device 5 is stopped and only the blower unit 7 operates ( (Slope) is recorded, and when the correction time is calculated by the correction time calculation unit 107, the operation state of the outside air introduction amount adjustment unit 8 is grasped and calculated.

  The motor 11 is configured to rotate the rotating tub 2 according to a command from the control unit 10. The heat pump device 5 is composed of a compressor 51 having a built-in induction motor 52 and a heat exchanger 53, and dehumidifies the humid air in the rotating tub 2 with an evaporator (not shown), and a condenser (not shown). In this case, the air is blown to the rotary tank 2 through the blower unit 7.

  FIG. 5 shows a change in drying rate time A when the clothing capacity is 1 kg and a drying rate time when the clothing capacity is 2 kg when operating at a dehydration rate of 70% (drying rate 70%) at the start of the drying process without introducing the outside air. A situation where the change B and the drying rate time change C when the clothing capacity is 3 kg is shown. As shown in FIG. 5, this time-dependent change in the drying rate has a different time change (slope) of the drying rate for each clothing volume, and can be determined for each volume.

  Further, even when the type of clothing changes (for example, synthetic clothing only, cotton clothing only, mixed clothing, etc.), it is known from experiments that the inclination is almost the same for each clothing capacity, and the clothing amount determination unit 105 operates. By determining the clothing capacity at the start, it is possible to determine a change in the drying rate over time.

  Furthermore, when the detection unit 104 detects from the conductivity between the electrodes of the clothes and the determination unit 103 determines that the clothes are dry, the drying rate is a dry rate A1 (for example, 92%) when the clothing capacity is 1 kg, and when the clothing capacity is 2 kg. Is the drying rate B1 (for example, 94%), and when the clothing capacity is 3 kg, the drying rate is C1 (for example, 95%).

The drying rate when determining that the determination unit 103 is dried by the lid back plate 9 (electrode B) and the rotating tub 2 (electrode A) of the detection unit 104 depends on the clothing capacity, and the type of clothing (only synthetic clothing) Regardless of whether they are different or only cotton clothing or mixed clothing).

  Furthermore, when each clothing capacity exceeds 100%, the drying rate A2 when the clothing capacity is 1 kg, the drying rate B2 when the clothing capacity is 2 kg, and the drying rate C2 when the clothing capacity is 3 kg, T1, T2, and T3. In addition, it is indicated that the time from when the determination unit 103 determines that the drying is performed until the drying rate exceeds 100% is Ta, Tb, and Tc for each capacity.

  In addition, when the heat pump device 5 is stopped and only the air blowing unit 7 is operating, when the outside air introduction amount of the outside air introduction amount adjusting unit 8 is small, the clothing capacity is 1 kg, 2 kg, and 3 kg. The drying rate time change is shown, and the drying rate time changes X, Y, and Z at that time are shown.

  FIG. 6 shows the change over time in the drying rate during the ON / OFF operation in which the compressor 51 of the heat pump device 5 is repeatedly operated and stopped. When the drying condition is a clothing capacity of 3 kg, the compressor 51 is stopped when the temperature upper limit value that is the operation condition of the compressor 51 or the overcurrent value of the induction motor 52 in the compressor 51 is detected. The slope when the outside air introduction amount adjusting unit 8 is driven with the adjustment amount large from the beginning of the drying process is defined as the drying rate time change E.

  This drying rate change E is a combination of the drying rate time change D1 and the drying rate time change C when the compressor 51 is in an operating state when the compressor 51 is stopped and only the blower unit 7 is operating. When the compressor 51 is in operation, the combined value of the drying rate time change C and the drying rate time change D1 (for example, the CC portion), and when the compressor 51 is stopped, only the drying rate D1 is operated (for example, the DD portion). Show.

  Further, when the adjustment amount of the outside air introduction amount adjustment unit 8 is medium, the drying rate time change D2 is obtained, and when the adjustment amount is small, the drying rate D3 is obtained, which is combined with these drying rates. Accordingly, the change in the slope is determined by the combination of the change in the drying rate with respect to each clothing volume and the change in the drying rate with the adjustment amount of the outside air introduction amount.

  The time when the drying rate reaches 100% indicates the drying rate E2, the elapsed time is time T4, the time when the determination unit 103 determines the detection of drying indicates the drying rate E1, and the time from the drying rate E1 to the drying rate E2 The correction time indicates that the correction time calculation unit 107 performs the correction time Te.

  FIGS. 2 and 3 are perspective views of a metal rotating tub 2 having conductivity and a main portion of a washing tub 3 made of, for example, synthetic resin that houses the rotating tub 2 and does not have conductivity. ing. That is, a space d of a certain distance is provided between the rotating tub 2 (electrode A) housed in the washing tub 3 and the lid back plate 9 (electrode B) provided at the front of the washing tub 3, An annular electrode is formed, and the lid back plate 9 forms the entire circumference of the front part of the washing tub 3 as an annular electrode. In the meantime, when wet clothes come into contact, the dryness of the clothes is detected by the resistance value between them.

  The metal rotating tub 2 having conductivity is one electrode connected to the grounding portion of the casing of the main body 1 through a conductive bearing on the rotating shaft 2b, and the washing tub 3 having no conductivity is used. The lid back plate 9 provided in the front part of the main body 1 shows a case where the other electrode is insulated from the grounding part of the housing of the main body 1.

The operation and action of the drum type washing and drying machine configured as described above will be described below. First, the drum-type washing / drying machine has washing, rinsing, dehydrating and drying processes. In order to detect the amount of clothes stored in the rotating tub 2 before washing, the motor 11 is driven to rotate the rotating tub. By rotating 2, the clothing amount determination unit 105 determines the clothing amount.

  When performing from the drying process, the clothes amount is stored in the rotating tank 2 after dehydration, and the motor 11 is driven in the same manner before the drying process to rotate the rotating tank 2, thereby determining the clothing amount determination unit 105. The amount of clothing is determined from the wet state after dehydration. Therefore, the clothes amount determination unit 105 detects the amount of clothes in the rotating tub 2 regardless of whether the washing process is performed or the drying process is performed.

  Thereafter, in the drying process, the controller 10 drives the motor 11 to rotate the rotating tub 2 at a specific control operation, for example, at about 45 rpm to 60 rpm, and the clothes in the rotating tub 2 are lifted in the rotating direction. 2 is dropped from the upper part in 2 and the blower blown by the blower 7 from the rear part of the rotating tank 2 is blown into the rotating tank 2 through the rear pipe 6 and hits the clothes i. The drying of clothes i is started within.

  Next, after the blower blown into the rotary tank 2 comes into contact with the clothing A, it passes through the front 4 of the pipe line, and the outside air introduction amount adjusting unit 8 provided in the middle of the front 4 of the pipe 1 The outside air introduction amount introduced from outside is adjusted, and the outside air introduction amount adjusting unit 8 is adjusted from fully closed to fully open, so that fresh air is newly added to the blower air and sent to the heat pump device 5.

  Further, the refrigerant compressed by the compressor 51 in the heat pump device 5 is dehumidified by the heat exchanger 53 and heats and air is dried, and is again blown into the washing tub 3 from the blower 7 as hot air. . By repeating this dehumidifying and drying cycle, the clothes are gradually dried. As a result, the drying rate varies with time as shown in FIG.

  FIG. 5 shows, for example, a drum-type washing / drying machine having a drying capacity of 3 kg, and the capacity when drying is performed with a clothing capacity of 1 kg, 2 kg, and 3 kg when the outside air introduction amount adjustment unit 8 is fully closed without taking in outside air. The change with time of each drying rate (inclination A, B, C) is shown, and the drying degree of this inclination is recorded in the first inclination recording unit 106.

  Further, FIG. 5 shows only the operation of the air blowing unit 7 when the heat pump device 5 is stopped, and the drying rate time when the clothing capacity is 1 kg, 2 kg, and 3 kg when the adjustment amount of the outside air introduction amount adjustment unit 8 is small. A change (inclination X, Y, Z) is shown, and the degree of drying of this inclination is recorded in the second inclination recording unit 108.

  The induction motor 52 that operates the compressor 51 in the heat pump device 5 operates by applying a commercial power supply, and thus rotates at a constant speed. Therefore, since the temperature rises during operation and the temperature rise of the heat pump device 5 is also added, the temperature rise of the compressor 51 may exceed the rated value. Temperature rise is suppressed by taking in outside air.

  As a result, the dehumidifying and drying performance includes a drying rate gradient X when the outside air is introduced (for example, when the outside air introduction amount is small and the clothing capacity is 1 kg), and a drying rate A when the heat pump device 5 is operated. Dehumidification drying is performed with the combined inclination (when the clothing capacity is 1 kg).

  Therefore, from the configuration shown in FIG. 4, for example, when the motor 11 drives the rotating tub 2 with a clothing capacity of 1 kg, the clothing amount determination unit 105 detects it before the washing process, and the first inclination recording unit 106 performs drying in the drying process. The time change (gradient A) of the rate and the time change (slope X) of the drying rate due to the introduction of outside air are input from the second gradient recording unit 108 to the determination unit 103 as conditions.

  Next, in the drying process, the drive unit 101 of the control unit 10 drives the induction motor 52 that rotates the compressor 51 in the heat pump device 5 at a constant speed, performs dehumidification and heat drying by the heat exchanger 53, and blower unit 7, the clothes a in the rotary tub 2 are dried. Here, the induction motor 52 is an induction motor rotating at a constant speed, and the drying performance of the heat pump device 5 is substantially constant. A slight difference in performance occurs when the frequency of the power supply is 50 Hz or 60 Hz, but this can be realized by holding three types of conditions as the drying rate recording unit 102, the first inclination recording unit 106, and the second inclination recording unit 108. .

  Furthermore, when the state of the outside air introduction amount adjusting unit 8 is fully closed, the drying process proceeds. In the drying process, the detection unit 104 includes the annular electrode B that is the lid back plate 9 and the electrode A that is the rotary tank 2. By applying a DC voltage in between, the degree of dryness of the clothes is detected from the resistance value or conductivity of the clothes A, and continues until the determination unit 103 determines that it is dry (more than a certain resistance value or less than a constant value with good conductivity) When it is determined that the clothes are dried (dryness detection), the drying degree of the clothes is the drying rate A1 (92% here).

  Next, after the determination unit 103 detects dryness, the correction time calculation unit 107 corrects the dryness rate time change A of the first inclination recording unit 106 and the dry rate A1 when dryness is detected until the dry rate reaches 100%. The time Ta is calculated, and the determination unit 103 extends the drying process by the correction time Ta. Similarly, Tb time is extended when the clothing capacity is 2 kg, and Tc time is extended when the clothing capacity is 3 kg.

  The change in the drying rate over time shown in FIG. 5 indicates that the drying rate is 70% at the start. However, depending on the type of clothing, the dehydration rate may be increased even when the dehydration operation is performed at the same rotational speed in the dehydration process. Because of the difference, the drying rate at the start of the drying process is different even with the same clothing capacity. However, the drying rate at the initial stage of the drying process is not particularly related, and the drying rate at the time of detecting that the determining unit 103 determines that the drying is performed due to the conductivity between the electrodes A and B is the drying rate recording unit for each clothing capacity. Since it can be determined by recording in 102 (drying rates A1, B1, and C1 that do not depend on the type of clothing, and the drying rate depends on the clothing capacity), the correction time calculation unit 107 can easily correct the correction time after detecting dryness. Can be calculated.

  For example, when the slope A of the drying rate time change when the clothing capacity is 1 kg is 0.32% / min and the drying rate at the time of detecting dryness is 92%, the correction time calculation unit 107 calculates (100% −92%) / 0. 32% = 25 minutes, and after the drying is detected, the drying operation is performed for 25 minutes.

  Similarly, when the slope B of the drying rate time change when the clothing capacity is 2 kg is 0.20% / min and the drying rate at the time of detecting dryness is 94%, the correction time calculation unit 107 is (100% −94%) / 0.20% = 30 minutes, and after the drying is detected, the drying operation is performed for 30 minutes.

  Similarly, when the slope B of the change in drying rate time when the clothing capacity is 3 kg is 0.16% / min and the drying rate at the time of detecting dryness is 95%, the correction time calculation unit 107 is (100% −95%) / 0.16% = 31 minutes, and the drying operation is performed for 31 minutes after the drying is detected.

  Therefore, the drying rate is determined by experiment in advance when the drying rate changes for each clothing volume from the drying performance of the heat pump device 5 and when the drying is detected, and is stored in the first inclination recording unit 106 and the drying rate recording unit 102 as data. Since the correction time calculation unit 107 can easily calculate the correction time after detection, it is possible to accurately perform a drying operation up to a drying rate of 100%, and energy saving is also improved.

In addition, when the operation of the heat pump device 5 is stopped, only the air blowing unit 7 is operating, and when the adjustment amount of the outside air introduction amount adjustment unit 8 is large, medium, and small, the time change of the drying rate is second respectively. The inclination recording unit 108 holds the drying rate time variations X, Y, and Z, respectively. As a result, the drying rate time change is calculated from the first inclination recording unit 106 and the second inclination recording unit 108 according to the adjustment amount of the outside air introduction amount adjustment unit 8 and the operation state of the heat pump device 5, and after the drying is detected. Correction time can be calculated.

  As shown in FIGS. 2 and 3, the electrode A that is the rotating tub 2 and the annular electrode B that is the lid back plate 9 are arranged in parallel to the front surface of the rotating tub 2 with a space d of a certain distance. Since the annular electrode is formed over the entire circumference on the front side of the rotary tub 2, the frequency of contact between the clothing A and the electrode B increases, and the degree of drying can be detected stably. At the same time, the drying rate can be determined for each clothing volume.

  In addition, the clothes B is pushed out to the front part of the rotating tank 2 by the wind blown from the rear part of the rotating tank 2 by the air blowing unit 7, thereby increasing the contact frequency between the electrodes A and B, and any part of the annular electrode Therefore, it is possible to improve the detection accuracy of the degree of dryness, and the determination unit 103 can perform dryness detection determination depending on the clothing capacity regardless of the clothing type. As a result, the correction time of the correction time calculation unit 107 after the drying detection in the drying process can be accurately calculated.

  Further, the outside air introduction amount adjusting unit 8 adjusts the introduction amount (for example, when the amount is increased in three stages of large, medium, and small), takes the outside air flow into the heat pump device 5 and cools the compressor 51. Is. However, in order to dry the clothes i in the rotating tub 2, the heat pump device 5 dehumidifies and heats the air to raise the temperature, so taking in the outside air deteriorates the drying performance.

  However, since the compressor 51 rotates at a constant speed, for example, in the case of the induction motor 52, the operation is limited so as not to exceed the temperature rating of the induction motor 52 due to a rise in ambient temperature and a temperature rise due to operation. There is a need to. Therefore, in order to suppress the temperature rise, the operation is stopped by the temperature rise or discharge pressure of the compressor 51 or the fluctuation value of the current of the induction motor 52 or its value.

  At that time, the compressor 51 needs to be stopped for a certain period after being stopped as a restarting condition, and the operation and stop time are performed at substantially the same time interval. However, even if the compressor 51 is in a stopped state, in order to cool the compressor 51, the blower unit 7 continues to operate.

  At that time, since the outside air is introduced and discharged to the outside air, the moisture-containing air is discharged from the washing tub 3 to the outside, and drying is performed with a small inclination. The time change of the drying rate when the heat pump device 5 is stopped is recorded in advance in the second inclination recording unit 108, and the determination unit 103 calculates the correction time using the value when necessary.

  As a result, as shown in FIG. 6, when the heat pump device 5 operates (without introduction of outside air), the time change of the drying rate becomes the inclination C held in the first inclination recording unit 106, and the heat pump The time change of the drying rate when the outside air introduction amount when the apparatus 5 is stopped becomes a slope D1 held in the second slope recording unit 108. (Inclination D2 when the adjustment amount of the outside air introduction amount adjustment unit 8 is medium, and inclination D3 when the adjustment amount is small).

  Therefore, when the heat pump device 5 is operated by repeatedly operating and stopping, the drying rate time change during operation becomes a slope CC that is a composite value of the slope C and the slope D1, and the drying rate time change during stop is Since it becomes DD which is inclination D1, and the state is repeated, the progress of drying is in the state of inclination E.

As a result, in the operation operation in which the operation and stop of the heat pump device 5 are repeated, the operation from the drying detection E1 for detecting the drying by the electrode A and the electrode B to the drying rate of 100% (time T4) The correction time calculation unit 107 calculates the correction time Te as the inclination CC when the operation is ON, and as the inclination DD when the operation is stopped (OFF).

  Therefore, even when the outside air introduction amount adjusting unit 8 is operated in the drying process to introduce outside air, the cooling operation of the compressor 51 is performed and the drying is measured, the adjustment amount of the outside air introduction amount adjusting unit 8 is set in advance. Accordingly, by keeping the time change of the drying rate in the second inclination recording unit 108, it is possible to predict and calculate the degree of progress of drying according to the amount of outside air introduced, and the correction time after detection of drying also depends on the operating conditions. The drying rate can be accurately set to 100%.

  Further, the outside air introduction amount adjusting unit 8 can be operated under optimum conditions for improving the cooling efficiency of the compressor 51 and the drying efficiency of the clothes by performing the adjustment amount according to the temperature of the outside air. Can be adjusted. When the outside air introduction amount is always large, the cooling performance is improved, but since a large amount of outside air is taken in, the efficiency of drying and dehumidification is lowered, and the drying time is lengthened.

  In consideration of the state, the outside air temperature and the temperature inside the drum-type washing / drying machine main body 1 are measured, the outside air introduction amount is adjusted under optimum conditions, and the operation (ON) and the stop (OFF) operation are repeated. The amount of outside air introduced can be varied during the operation.

  In this way, the determination unit 103 determines dryness detection, and the subsequent dry correction time is performed by the correction time calculation unit 107, so that the process is temporarily stopped during the drying process, and the amount of clothes is measured each time. It is not necessary to calculate the remaining drying time while confirming that the clothing is lightened during the operation process, preventing wasted time and power consumption such as stopping during the drying time and measuring the amount of clothing can do.

  Furthermore, even when the heat pump device 5 serving as a heating unit is stopped, the drying rate time change can be accurately grasped, and the correction time after the drying detection can be calculated accurately.

  Furthermore, by improving the contact frequency of clothing A by the annular electrode, the detection of the drying rate can be stabilized, and the drying rate at the time of detecting the drying of the determination unit 103 can be made almost the same condition for each clothing volume. Calculation of the correction time after detection can be facilitated, stable drying performance can be realized, and erroneous detection such as non-drying can be prevented.

  As described above, the drum type washing and drying machine according to the present invention accurately detects the degree of drying of clothes without stopping the rotating tank in the middle of the drying process, sets the drying correction time accurately, and operates. It is useful as a drum-type washing and drying machine because it can save time and save energy.

2 Rotating tank (electrode A)
3 Washing tank 5 Heat pump device (heating unit)
7 Air blowing part 8 Outside air introduction amount adjustment part 9 Cover back plate (electrode B)
DESCRIPTION OF SYMBOLS 10 Control part 11 Motor 51 Compressor 52 Induction motor 102 Drying rate recording part 103 Determination part 104 Detection part 105 Clothing amount determination part 106 First inclination recording part 107 Correction time calculation part 108 Second inclination recording part

Claims (4)

A rotating tub with conductivity to accommodate clothing;
A motor for driving the rotating tank;
A washing tub enclosing the rotating tub rotatably;
A heating unit for heating the drying air;
An induction motor that drives the compressor of the heating unit;
A blower for blowing the drying air heated by the heating unit into the washing tub;
An outside air introduction amount adjusting section for taking in outside air;
An electrode provided at the front of the washing tub;
A detection unit for detecting the dryness of clothes;
A determination unit for determining the degree of drying of clothes from the conductive characteristics between the rotating tub and the electrode;
A drying rate recording unit holding in advance a drying rate for each clothing capacity when the determination unit determines to dry;
When operating the heating unit, a first inclination recording unit that retains the degree of progress of drying per unit time for each clothing volume before washing,
When the heating unit is stopped, a second inclination recording unit that retains the degree of progress of drying that changes in accordance with the amount of outside air introduced per unit time for each clothing volume before washing,
A clothing amount determination unit for detecting the amount of clothing;
A correction time calculation unit that calculates a dry correction operation time after the determination unit determines to be dry;
A control unit for controlling the aircraft,
When the heating unit is activated and stopped during the drying operation, the correction time calculation unit determines the dryness detection determination of the determination unit based on the amount of clothing detected by the clothing amount determination unit and the degree of drying detected by the determination unit. A drum-type laundry dryer that determines the correction time for the subsequent drying process. The drum-type washing and drying machine according to claim 1, wherein the second inclination recording unit holds the degree of progress of drying that changes in accordance with the outside air introduction amount adjusted by the outside air introduction amount adjusting unit. The drum-type washing and drying machine according to claim 1 or 2, wherein the heating unit is configured by a constant-speed heat pump device that drives the compressor with an induction motor. One electrode is grounded via a bearing of the rotating shaft of the rotating tank, and
Any one of Claims 1-3 arrange | positioned in parallel with a fixed distance ahead of the said rotation tub, and comprised with the other electrode cyclically provided around the opening part provided in the front part of the washing tub. The drum-type washer-dryer according to item.