JP2018033842A - Clothing dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the execution of a high-quality drying course for obtaining a high-quality finished state in which the formation of wrinkles in clothing is suppressed.SOLUTION: A clothing dryer according to the present embodiment comprises: a rotary drum in which clothing is accommodated; a drying mechanism which has heating means and a blower fan to generate dry air; a circulation air path for supplying the dry air into the rotary drum in a circulation manner; a damper for adjusting a discharge ratio at which the dry air flowing in the circulation air path is discharged to the outside of the circulation air path; and control means for controlling the degree of opening of the damper. The clothing dryer is configured so as to be able to execute a standard drying course for obtaining a standard clothing dry finished state and a high-quality drying course for obtaining a clothing finished state more excellent than that of the standard drying course. When the high-quality drying course is executed, at least in the initial stage of a drying process, the control means controls the damper to increase the discharge ratio at which the dry air flowing in the circulation air path is discharged to the outside of the circulation air path.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a clothes dryer.

  As a clothes dryer, for example, a drum type laundry dryer having both a washing function and a drying function and capable of a washing / drying operation in which a drying process is continuously performed after a washing process including washing, rinsing, and dehydration is known. (For example, refer to Patent Document 1). In this type of washing and drying machine, a circulation air passage is provided outside the water tank, and a blower, a heater, and a dehumidifier are provided in the circulation air passage. In the drying process, the air in the water tank (rotary drum) is circulated through the circulation air passage by the blower, and at this time, the air heated by the heater is supplied into the water tank to heat the clothes, and moisture is supplied. The clothes are dried by repeatedly dehumidifying the contained air with a dehumidifier.

JP 2008-110135 A

  In the case of the above, when the drying process proceeds as it is with respect to the garment that has become entangled in the final dehydration of the washing process, wrinkles are generated, and there is a situation in which the finished state of drying deteriorates. In particular, when a large amount of dry air is blown onto a garment at a high temperature in order to shorten the drying process time, the moisture from the garment tends to evaporate and wrinkles tend to settle.

  Therefore, a clothes dryer capable of executing a high-quality drying course in a high-quality finished state in which wrinkling of clothes is suppressed is provided.

  The clothes dryer of the present embodiment includes a rotating drum in which clothes are stored, a drying mechanism that has heating means and a blower fan to generate drying air, and a circulation for circulatingly supplying the drying air into the rotating drum. An air passage, a damper for adjusting a discharge ratio for discharging the dry air flowing through the circulation air passage to the outside of the circulation air passage, and a control means for controlling the opening degree of the damper. The standard drying course for obtaining a dry finish state and a high-quality drying course in which the clothing finish state is better than that of the standard drying course are configured to be executable. At least in the initial stage of the drying process, the damper is controlled to increase the discharge ratio for discharging the dry air flowing through the circulation air passage out of the circulation air passage.

1 is a vertical right side view schematically showing an internal configuration of a washing / drying machine according to the first embodiment. Rear view schematically showing the internal structure including the heat pump of the washing and drying machine Block diagram showing the electrical configuration of the washing and drying machine The figure which shows the state (b) of the damper control in the high quality drying course (a) between the stroke | process at the time of a washing drying operation, and opening and closing of a damper Diagram showing the relationship between compressor frequency, fan speed, and drum speed in the standard drying course and high-quality drying course The figure which shows the relationship between the cloth amount of clothing, and the predetermined time which opens an exhaust damper The 2nd Embodiment shows the relation between the compressor frequency in the standard drying course and the high-quality drying course, and the wind speed of the drying air. The figure which shows 3rd Embodiment and shows the relationship of the drum rotation period in a standard drying course and a quality drying course The 4th Embodiment shows the relationship between the dehydration rate, dehydration rotation speed, and dehydration time in the standard drying course and the high-quality drying course.

  Hereinafter, some embodiments applied to a drum-type washing / drying machine having a washing function and a drying function will be described with reference to the drawings. In addition, about the part which is common between several embodiment, the same code | symbol is attached | subjected and new illustration and repeated description are abbreviate | omitted.

(1) First Embodiment A first embodiment will be described with reference to FIGS. First, an overall configuration of a drum-type washing / drying machine 1 as a clothes dryer according to the present embodiment will be described with reference to FIGS. 1 to 3. The outer box 2 constituting the main body of the washing / drying machine 1 has a substantially rectangular box shape, and a cylindrical water tank 3 is inclined downwardly in the outer box 2 through an elastic support mechanism (not shown). It is supported. A cylindrical rotating drum 4 as a rotating tub for storing clothes (laundry) is rotatably supported in the water tub 3. The rotary drum 4 is configured to rotate around an inclined axis that extends in the front-rear direction and is inclined rearwardly downward.

  As shown in FIG. 1, a large number of holes 4 a for water passage and ventilation are formed in the peripheral wall portion and the rear wall portion of the rotating drum 4, and the laundry agitator is formed on the inner surface of the peripheral wall portion of the rotating drum 4. A plurality of baffles (not shown) are provided. Although not shown, the front surface of the rotary drum 4 is provided with an opening through which clothes are put in and out. The front surface of the water tank 3 is formed with a charging port that is continuous with the opening, and the front surface of the outer box 2 is provided with a door 5 that opens and closes the charging port. An operation panel 6 (see FIG. 3) is provided on the upper portion of the front surface of the outer box 2.

  As shown in FIGS. 1 and 2, a drum motor 8 made of, for example, an outer rotor type brushless motor is disposed at the rear of the water tank 3. The tip of the rotating shaft of the drum motor 8 penetrates the back surface of the water tank 3 and protrudes into the water tank 3, and is connected and fixed to the center of the rear part of the rotating drum 4. With such a configuration, the rotary drum 4 is directly driven to rotate by the drum motor 8. The drum motor 8 is provided with a rotation sensor 42 (shown only in FIG. 3) for detecting the rotation of the rotor of the drum motor 8. The rotation sensor 42 functions as a load detection unit that detects the amount of cloth in the rotary drum 4.

  Although not shown in detail, a water supply device for supplying water into the water tank 3 is provided at an upper portion in the outer box 2. This water supply apparatus includes a water supply valve 11 (see FIG. 3) connected to a water tap as a water supply source via a connection hose, a water injection case having a detergent charging case that can be pulled out, and the like. On the other hand, as shown in FIG. 1, a drainage pipe 12 is connected to the lower part of the water tank 3, and a drainage valve 13 is provided in the middle of the drainage pipe 12. When water is supplied from the water supply device into the water tank 3 with the drain valve 13 closed, the water is stored in the water tank 3. At this time, the water level in the water tank 3 is detected by a water level sensor 7 (see FIG. 3). As the drain valve 13 is opened, the water stored in the water tank 3 is discharged to the outside through the drain pipe 12.

  As shown in FIG. 1, the water tank 3 is provided with an air discharge port 17 at a front right side portion of the upper surface and an air supply port 18 at an upper left portion of the back surface portion. As shown in FIGS. 1 and 2, a drying mechanism 19 that circulates and supplies drying air (warm air) into the rotating drum 4 is provided inside the outer box 2. In the present embodiment, the drying mechanism 19 is located outside the water tank 3 and includes a circulation air passage 20 and a heat pump 21. The circulation air passage 20 has an inlet and an outlet, and the inlet is connected to the outlet 17 of the water tank 3 and the outlet is connected to the supply port 18. Further, the drying mechanism 19 includes a blower fan 22 that supplies air discharged from the discharge port 17 from the supply port 18 into the water tank 3 and thus into the rotating drum 4 while circulating the air in the circulation air passage 20 in the direction of arrow A. ing.

  Specifically, the circulation air passage 20 includes an exhaust duct 23, a heat pump duct 24, and an air supply duct 25. Among them, the exhaust duct 23 has a base end connected to the discharge port 17, extends rearward from the upper right side in the outer box 2, and then bends to extend downward from the rear of the water tank 3. 24 is connected to the base end (right end). A well-known lint filter 26 for capturing lint from the dry air is provided at the front end side portion of the exhaust duct 23.

  The heat pump duct 24 extends rightward and leftward at the bottom rear portion in the outer box 2, and the blower fan 22 is provided on the front end side (right end side in FIG. 2). The blower fan 22 includes, for example, a centrifugal fan 15 and a fan motor 16 that drives the centrifugal fan 15 in a fan casing 14. A proximal end portion (lower end portion) of the air supply duct 25 is connected to an outlet portion of the fan casing 14. The air supply duct 25 extends rearwardly from the left water tank 3 in the outer box 2, and its tip end (upper end) is connected to the supply port 18.

  As shown in FIG. 2, in the heat pump duct 24, an evaporator 27 and a condenser 28 constituting a heat pump (refrigeration cycle) 21 are sequentially arranged on the right and left (left and right in FIG. 2). The heat pump 21 is configured by connecting a compressor 29, the condenser 28, a throttle valve 30 as decompression means, and the evaporator 27 in a closed loop shape with a refrigerant pipe 31. A required amount of refrigerant is sealed inside the heat pump 21 and circulates through the refrigerant pipe 31. At this time, the condenser 28 functions as a heating unit that heats the drying air, and the evaporator 27 functions as a dehumidifying unit that removes moisture from the drying air.

  In the heat pump 21, the gas refrigerant discharged from the compressor 29 flows into the condenser 28 and is condensed by heat exchange in the condenser 28 when the compressor 29 is driven during the drying operation. Refrigerant. The liquid refrigerant that has flowed out of the condenser 28 is expanded by the throttle valve 30 to form a mist, and the mist refrigerant flows into the evaporator 27. In the evaporator 27, the refrigerant is vaporized by heat exchange with the outside air, and the gaseous refrigerant is returned to the compressor 29. Circulation is performed in which the refrigerant is compressed by the compressor 29 and discharged at a high temperature and high pressure.

  As the heat pump 21 is driven and the blower fan 22 is driven, the air in the water tank 3 (the rotating drum 4) is discharged from the discharge port 17 through the exhaust duct 23 as shown by an arrow A in FIGS. Through the heat pump duct 24, through the evaporator 27 and the condenser 28, and then into the air supply duct 25, and supplied to the rotary drum 4 through the supply port 18 and the hole 4 a. Circulation is performed. Due to the circulation of the air, the air containing a large amount of steam which is deprived of moisture from the clothes in the water tank 3 (the rotating drum 4) is cooled through the evaporator 27 portion in the heat pump duct 24, so that the steam is The dehumidified air is condensed (or sublimated) and dehumidified, and the dehumidified air is heated by passing through the condenser 28 portion to become dry warm air, which is supplied again into the rotating drum 4 and used for drying clothes. .

  At this time, as shown in FIG. 2, the heat pump 21 is provided with a plurality of temperature sensors that detect the temperature of the refrigerant flowing through the refrigerant flow path 37. Specifically, a compressor outlet temperature sensor 32 is provided on the discharge side of the compressor 29, a condenser temperature sensor 33 is provided on the condenser 28, and an evaporator temperature is provided at the inlet of the evaporator 27. A sensor 34 is provided, and a compressor inlet temperature sensor 35 is provided on the suction side of the compressor 29. Further, as shown in FIG. 1, the air supply duct 25 in the circulation air passage 20 is located near the supply port 18 and flows in the circulation air passage 20 to supply the dry air supplied to the rotary drum 4. A drying air temperature sensor 56 for detecting the temperature is provided.

  As shown in FIG. 1, the circulation air passage 20 is opened to the outside in the middle portion of the exhaust duct 23, that is, the upper wall portion of the rear portion of the lint filter 26, that is, the air in the circulation air passage 20 ( An exhaust port 37 is provided as an opening for discharging the air in the water tank 3 to the outside of the circulation air passage 20. The exhaust port 37 communicates with an outer exhaust port 38 provided in the outer box 2. The exhaust port 37 is provided with a damper 39 for adjusting the discharge rate (discharge amount) by controlling the opening degree. The damper 39 is operated using, for example, a damper motor 40 (shown only in FIG. 3) as a drive source. The control of the opening degree of the damper 39 includes two steps of opening and closing, and in this embodiment, the damper 39 is controlled to open and close.

  As shown in FIG. 2, an intake port 24 a is provided above the heat pump duct 24 so as to be positioned between the evaporator 27 and the condenser 28. The intake port 24a is always open and communicates the inside of the circulation air passage 18 and the outside of the circulation air passage 18. Thus, when the damper 39 is operated in the driving state of the blower fan 22 and the exhaust port 37 is opened, a part of the air passing through the circulation air passage 20 as shown by an arrow B in FIG. The air is exhausted to the outside of the outer box 2 through the exhaust port 37 and the outer exhaust port 38. At the same time, as indicated by an arrow C in FIG. 2, outside air is taken into the circulation air passage 18 from the intake port 24a.

  The operation panel 6 is provided with various operation units 10 in addition to a power-on switch, a power-off switch, and a display unit 9 for performing necessary display (all are shown only in FIG. 3). In the present embodiment, the user can operate the operation unit 10 to instruct the execution of the washing and drying operation in which the drying operation is executed continuously after the washing operation. In addition, it is possible to select and set a driving course related to a washing operation and a driving course related to a drying operation. At this time, the courses that can be set for the drying operation include a standard drying course for obtaining a finished state of a standard garment and a high-quality drying course having a better finished state of the garment than the standard drying course.

  The outer box 2 is provided with a control device 41 as a control means that mainly includes a microcomputer and controls the entire washing and drying machine 1. FIG. 3 schematically shows the electrical configuration of the washing / drying machine 1 of the present embodiment, centering on the control device 41. That is, an operation signal from the operation unit 10 of the operation panel 6 is input to the control device 41, and the control device 41 controls display on the display unit 9 of the operation panel 6.

  The control device 41 receives detection signals from the water level sensor 7, the rotation sensor 42, the temperature sensors 32 to 35 of the heat pump 21, and the drying air temperature sensor 36. The control device 41 controls the water supply valve 11, the drain valve 13, the drum motor 8, the blower fan 22 (fan motor 16), the compressor 29 and throttle valve 30 of the heat pump 21, and the damper motor 40 (damper 39). At this time, the control device 41 can control the blower fan 22 (fan motor 16) at a variable rotation speed (output), and drives the compressor (compressor) 29 at a variable frequency. It has become. Furthermore, the control device 41 can also control the rotation speed of the drum motor 8.

  With the above-described configuration, the control device 41 can control each mechanism of the washing and drying machine 1 based on an input signal from each sensor or a pre-stored control program in accordance with an operation course set by the user in the operation unit 10. The washing operation including the washing process, the rinsing process, and the dehydrating process, and the drying operation are automatically executed. In this case, the washing / drying operation in which the drying operation is performed continuously after the washing operation is also possible. Since each process of the washing operation is well known and will not be described, at the start of the washing operation, the cloth amount of the clothes is determined based on the load detection on the rotating drum 4, and the water level and the like are determined according to the determination result. Is determined.

  As described above, in the drying operation, the user can set a standard drying course and a high-quality drying course. In the present embodiment, as will be described in the following description of the operation, when the user sets a high-quality drying course, the control device 41 controls the damper 39 at least in the initial stage of the drying process to control the circulation air passage 20. It is configured to increase the amount of discharge of the flowing dry air to the outside. The initial stage of the drying process refers to any point in the first half of the drying process.

  More specifically, in this embodiment, the damper 39 in the closed state (opening degree 0) is opened from the start of the drying process. Increasing the discharge rate includes increasing the opening degree of the damper 39 under the same rotational speed condition of the blower fan 22, and opening the damper 39 from the closed position (opening degree 0). Is also included. Reducing the discharge rate includes lowering the opening degree of the damper 39 and closing (making the opening degree 0).

  At this time, in the present embodiment, the control device 41 controls the driving frequency of the compressor 29, that is, the output of the heating means in the high-quality drying course together with the control of the damper 39, compared to the case of the standard drying course. Set low. At the same time, the rotational speed of the blower fan 22 and the rotational speed (rotational speed) of the rotary drum 4 are set higher than the standard drying course, respectively, to control the operation. As the rotational speed of the blower fan 22 increases, the amount of air flowing through the circulation air passage 20 (supplied into the rotating drum 4) increases.

  In particular, in the present embodiment, the control device 41 controls the damper 39 to reduce the discharge rate of the drying air when the predetermined time t has elapsed from the start of the drying process in the high-quality drying course. 39 is closed. The predetermined time t at this time is set so as to increase as the cloth amount increases, according to the weight (cloth amount) of the clothes in the rotary drum 4. Further, in the present embodiment, the control device 41 closes the damper 39 after a predetermined time t has elapsed from the start of the drying process, and then the temperature of the drying air in the circulation air passage 20 detected by the drying air temperature sensor 36. In this case, based on the temperature in the vicinity of the inlet (supply port 18) of the water tank 3, when the temperature detected by the drying air temperature sensor 36 reaches a predetermined temperature (for example, 60 ° C.) or higher, the damper 39 is opened again to open the drying air. The rate of emission is increasing.

  Next, the operation of the washing / drying machine 1 having the above configuration will be described with reference to FIGS. Now, for example, when performing a washing / drying operation in which a drying operation is performed continuously after a washing operation, the user puts clothes into the rotating drum 4 and puts a necessary detergent into the detergent charging case, Settings are made by operating the operation unit 10 of the operation panel 6. In this case, the washing and drying operation can be set, and the course in the drying process, that is, either the standard drying course or the high-quality drying course can be selected and set. When the standard finish state is acceptable, the standard dry course is selected, and when it is desired to obtain a good finish state with less wrinkles on the clothes, the fine dry course is selected.

  FIG. 4 shows the relationship between each process of the washing and drying operation and the open / closed state of the damper 39 that opens and closes the exhaust port 37 of the circulation air passage 20. When the washing / drying operation is started, the control device 41 executes a washing operation including a washing process, a rinsing process, and a dehydrating process. During this washing operation, the damper 39 is kept closed. When the washing operation (dehydration process) is completed, the drying process (drying operation) is subsequently performed. As described above, in the drying process, the heat pump 21 and the blower fan 22 are driven, and forward and reverse rotation of the rotating drum 4 at a relatively low speed is repeated at a predetermined cycle.

  As shown by an arrow A in FIG. 2, while the clothes in the rotary drum 4 are loosened by rotation, the dry wind consisting of dry warm air passes through the circulation air passage 20 into the rotary drum 4 (water tank 3). Circulation is supplied and the clothes are dried. At this time, in this embodiment, as shown in FIG. 4, in the case of the standard drying course, the damper 39 is kept closed. On the other hand, at the time of execution of the high-quality drying course, the control device 41 opens the damper 39 and the exhaust port 37 of the circulation air passage 20 to the outside at least for a predetermined time t from the start of the drying process.

  As a result, in the high-quality drying course, as shown by the arrow B, the drying air is discharged from the exhaust duct 23 of the circulation air passage 20 through the exhaust port 37 and the external exhaust port 38, and also indicated by the arrow C. As described above, air is sucked from the air inlet 24a of the heat pump duct 24, and the temperature rise of the drying air is suppressed as compared with the case of the standard drying course. In this way, the clothes are loosened by the rotation of the rotary drum 4 without raising the temperature of the drying air, so that the clothes are wrinkled. For example, it is possible to suppress wrinkling by loosening the folds and twists of clothing caused by entanglement between clothing in the dehydration process performed immediately before, and spreading the clothing cloth (extending the wrinkles). .

  Moreover, in this embodiment, as shown in FIG. 5, the setting is different between when the standard drying course is executed and when the high-quality drying course is executed. That is, in the high-quality drying course, the drive frequency (for example, 40 Hz) of the compressor 29 is set lower than that in the case of the standard drying course (for example, 60 Hz). At the same time, the rotational speed of the blower fan 22 (for example, 5500 rpm) is set higher than that in the case of the standard drying course (for example, 3700 rpm), and the rotational speed of the rotating drum 4 (53 rpm) is set to be higher than that in the case of the standard drying course (50 rpm). Set slightly higher.

  Thus, in the high-quality drying course, the driving frequency (for example, 40 Hz) of the compressor 29 is set lower than that in the case of the standard drying course (for example, 60 Hz). Since the temperature rise of the wind is further suppressed, the suppression effect with wrinkles becomes higher. By setting the rotation speed of the blower fan 22 (the air volume of the drying air) to be higher than that of the standard drying course, the air volume of the drying air can be made larger than that of the standard drying course, and the clothes can be loosened (by spreading the cloth). Wrinkle extension) will be promoted more. Since the rotation speed of the rotating drum 4 is set to be slightly higher than that of the standard drying course, the rotational movement of the clothes is promoted, and the wrinkles can be prevented from being fixed by moving the clothes more.

  Furthermore, in this embodiment, as shown in FIG. 4B, the damper 39 is closed when a predetermined time t has elapsed from the start of the drying process in the high-quality drying course. In this case, as shown in FIG. 6, the predetermined time t is set so as to increase as the weight increases, according to the amount of clothes in the rotary drum 4. Specifically, for example, when the amount of cloth is 1 kg, it is 10 minutes, when it is 2 kg, it is 20 minutes, when it is 3 kg, it is 30 minutes, and when it is 4 kg, it is 40 minutes. As shown in FIG. 4B, in the high-quality drying course, after the predetermined time t has passed and the damper 39 is closed, the temperature detected by the drying air temperature sensor 36 becomes a predetermined temperature, for example, 60 ° C. or more. Sometimes, the damper 39 is opened again.

  By this control, when the clothes are sufficiently loosened after a predetermined time t has elapsed from the start of the drying process, the damper 39 is closed, so that drying of the clothes can be promoted by raising the temperature of the drying air. Therefore, it can suppress that the time of a drying process becomes long. At this time, when the weight of the clothes in the rotating drum 4 is relatively small, the loosening time can be shortened. Therefore, by shortening the predetermined time t by that amount, the drying of the clothes is promoted thereafter, and as a whole The drying time can be shortened.

  In addition, when the temperature detected by the drying air temperature sensor 36 reaches a predetermined temperature, for example, 60 ° C. or higher, the damper 39 is opened again. Temperature rise can be suppressed and wrinkling of clothing can be prevented. At this time, since the drying air temperature sensor 36 is provided at a position for detecting the temperature of the drying air supplied into the rotary drum 4 in the vicinity of the supply port 18, the temperature of the drying air directly acting on the clothing is measured. It can be detected accurately and control can be performed more reliably.

  Thus, according to the present embodiment, the following effects can be obtained. That is, at the time of execution of the high-quality drying course, at least in the initial stage of the drying process, the damper 39 is controlled to increase the discharge ratio for discharging the dry air flowing through the circulation air passage 20 to the outside of the circulation air passage 20. The temperature rise of the drying wind can be suppressed as compared with the case of the standard drying course, and wrinkles can be suppressed by spreading the cloth of the clothes (extending the wrinkles). As a result, there is an excellent effect that it is possible to execute a high-quality drying course in a high-quality finished state in which wrinkles of clothing are suppressed.

  In particular, in the present embodiment, since the damper 39 of the exhaust port 37 of the circulation air passage 20 is opened from the start of the drying process, the temperature rise of the drying air can be effectively suppressed. In the high-quality drying course, the rotational speed of the blower fan 22 is set higher than that of the standard drying course, so that the air volume of the drying air can be made larger than that of the standard drying course, and the clothes are loosened, that is, the cloth is expanded. The wrinkle growth due to this will be further promoted. In the fine drying course, in addition to controlling the rotational speed of the blower fan 22, the driving frequency of the compressor 29 is made smaller than that of the standard drying course so as to suppress the heating of the drying air. The rise is suppressed, and the effect of preventing wrinkles is higher. In the high-quality drying course, the rotation speed of the rotary drum 4 is made higher than that in the standard drying course, so that the clothes are moved more frequently, and the effect of suppressing wrinkle fixing can be obtained.

  In the present embodiment, the damper 39 is closed when a predetermined time has elapsed from the start of the drying process in the high-quality drying course. Therefore, when the clothes are sufficiently loosened, the temperature of the drying air is increased by increasing the temperature of the drying air. Drying can be promoted, and the drying process can be prevented from becoming unnecessarily long. At this time, when the amount of clothes is small, the time required for unraveling is short, and as the amount of clothes increases, the time required for unraveling is long. Therefore, the predetermined time is set according to the amount of clothes. Thus, when the amount of fabric is small, an efficient drying operation can be performed, for example, the entire drying time can be shortened.

  Furthermore, in this embodiment, after the damper 39 is controlled and the discharge rate of the drying air is reduced in the high-quality drying course, the damper 39 is controlled when the temperature detected by the drying air temperature sensor 36 exceeds a predetermined temperature. In order to increase the discharge rate of dry air, it is possible to suppress excessive temperature rise and prevent wrinkling of the clothing even when drying is continued after the clothing has been loosened. it can. In this case, since the drying air temperature sensor 36 is provided at a position for detecting the temperature of the drying air supplied to the rotary drum 4, it can accurately detect the temperature of the drying air that directly acts on the clothing. Thus, the control can be performed more reliably.

(2) Second to Fourth Embodiments and Other Embodiments FIG. 7 shows a second embodiment. The difference from the first embodiment is that the blower fan 22 is in a high-quality drying course. Is set to be higher than the standard drying course, instead of setting the rotational speed of the drying air higher than that of the standard drying course. That is, in the second embodiment, the speed of the drying air in the drying process is set to 32 km / hour in the high-quality drying course and 22 km / hour in the standard drying course. The opening / closing control of the damper 37 and the drive frequency control of the compressor 29 are also performed in the same manner as in the first embodiment.

  According to this, in the high-quality drying course, the wind speed of the drying air can be made larger than that of the standard drying course, and the wrinkle spreading by loosening clothes, that is, spreading the cloth, is further promoted. Therefore, also in the second embodiment, similarly to the first embodiment, it is possible to obtain an excellent effect that it is possible to execute a high-quality drying course in a high-quality finished state in which wrinkles of clothing are suppressed. it can. In addition, as a method for adjusting the wind speed of the dry air (changed compared with the normal time), not only the rotation speed control of the blower fan 22 but also the adjustment of the air passage cross-sectional area at the supply port 18 and the like (two (Including switching the air path).

  FIG. 8 shows the third embodiment. The difference from the first embodiment is that in the high-quality drying course, the forward / reverse rotation cycle of the rotating drum 4 is set to be different from that in the standard drying course. It is in the point which made it set short. Specifically, in the standard drying course, the rotating drum 4 repeats normal rotation for 30 seconds and reverse rotation for 30 seconds, whereas in the high-quality drying course, it repeats normal rotation for 7 seconds and reverse rotation for 7 lines. It is configured as follows. Note that a pause time of 1 second to several seconds may be provided when switching between forward rotation and reverse rotation.

  Here, if the time during which the rotating drum 4 is continuously rotated in one direction becomes relatively long, the twist of the clothes in the rotating drum 4 becomes relatively large, and the risk of wrinkles also increases. On the other hand, in this embodiment, since the forward / reverse rotation cycle of the rotating drum 4 in the high-quality drying course is shortened, the time during which the rotating drum 4 continuously rotates in one direction is shorter than that in the case of the standard drying course. The amount of twisting of the clothes can be reduced and the wrinkles can be suppressed. Therefore, also in the third embodiment, it is possible to obtain an excellent effect that it is possible to execute a high-quality drying course in a high-quality finished state in which wrinkles of clothing are suppressed.

  FIG. 9 shows a fourth embodiment. In the fourth embodiment, when a high-quality drying course is set in the drying process when the washing / drying operation is performed, the dehydration rate of the clothing at the end of the washing operation (dehydration process) is the standard drying course. It is controlled to be lower than in the case of. At this time, in the case of the standard drying course, the dehydration rate of the clothes at the end of the dehydration process is set to 66%, whereas in the case of the high-quality drying course, the dehydration rate of the clothes at the end of the dehydration process is 63%.

  At this time, in order to realize the above-described dewatering rate, the dewatering rotation speed of the rotating drum 4 in the dewatering process can be controlled (changed). Alternatively, the execution time of the dehydration process can be controlled (changed). Specifically, when controlling the dehydration speed of the rotary drum 4, the dehydration speed of the rotary drum 4 is 1400 rpm in the standard drying course, and 1000 rpm in the high-quality drying course. When controlling the execution time of the dehydration process, the dehydration time is 10 minutes in the standard drying course, and 5 minutes in the fine drying course.

  Also according to the fourth embodiment, as in the first embodiment, it is possible to obtain an excellent effect that it is possible to execute a high-quality drying course in a high-quality finished state that suppresses wrinkling of clothes. . At this time, particularly in the present embodiment, in the case of a high-quality drying course, the amount of moisture contained in the clothing at the start of the drying process is larger than that in the case of the standard drying course. Since the evaporation speed is suppressed, it becomes more effective by suppressing wrinkles.

  In addition, although illustration is abbreviate | omitted, as other embodiment, in the high-quality drying course, the dispersion | variation in the clothing in the rotating drum 4 during one rotation of the rotating drum 4 (variation of load) by the rotation sensor 42 during the drying operation. The damper 37 can be closed when the detected load variation is less than or equal to a predetermined value. According to this, since there is a relationship in which the variation in load increases when the degree of loosening of clothes is small, the degree of loosening of clothes can be determined from the variation in load. As a result, the time required to supply the relatively low temperature drying air to loosen the clothes can be minimized, which is more effective.

  In each of the above embodiments, the damper 39 is configured to be opened / closed. However, the damper 39 may be configured to adjust the opening degree of the damper 39 to three or more stages (including a non-stage). In short, it suffices if it can be adjusted so as to increase or decrease the discharge rate of the dry air from the circulation air passage. Further, in this type of washing / drying machine, so-called preheat dehydration, in which the heat pump 21 is driven before the start of the drying operation, that is, in the middle of the dehydration process, is performed in order to promote the rise in the temperature rise of the heat pump 21. . When such preheat dewatering is performed, the damper 37 may be opened from the start of preheat dewatering, that is, from the middle of the dewatering process. That is, it is only necessary to open the damper 37 at least before the start of the drying process.

  In each of the embodiments described above, the standard drying course and the high-quality drying course have been raised as the drying operation course. In addition to these, a careful course, a rush course, an energy saving course, etc. are provided and selected from them. A configuration that can be set is also possible. In the above embodiment, the damper 39 is provided at the exhaust port 37. However, a damper may be provided at the intake port of the circulation air passage to control the damper. Although not described in the above embodiments, it is desirable to provide a space in the rotary drum 4 in order to suppress wrinkles in the high-quality drying course. Therefore, the rated capacity, that is, the maximum amount of cloth that can be accommodated in the rotating drum 4 may be set to be smaller (for example, 4 kg) than in the case of the standard drying course (for example, 4 kg).

  Furthermore, it is also possible to implement a plurality of the embodiments described above in combination with the embodiments. In addition, the drying mechanism is not limited to one provided with a heat pump, and may be one provided with a heater as a heating means. In addition, various modifications can be made to the hardware configuration, such as being applicable not only to a washing and drying machine but also to a clothes drying machine that does not have a washing function. Furthermore, specific values such as various times, the number of rotations of the blower fan, the rotating drum, and the frequency of the compressor in each of the above embodiments are merely shown as examples, and can be appropriately changed. For example, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.

  In the drawings, 1 is a washing dryer (clothes dryer), 2 is an outer box, 3 is a water tank, 4 is a rotating drum, 6 is an operation panel, 8 is a drum motor, 16 is a fan motor, 17 is a discharge port, 18 is Supply port, 19 is a drying mechanism, 20 is a circulation air passage, 21 is a heat pump, 22 is a blower fan, 24a is an intake port, 27 is an evaporator, 28 is a condenser (heating means), 29 is a compressor, and 36 is drying A wind temperature sensor, 37 is an exhaust port (opening), 38 is an external exhaust port, 39 is a damper, 41 is a control device (control means), and 42 is a rotation sensor (load detection means).

Claims (13)

A rotating drum in which clothing is housed;
A drying mechanism having a heating means and a blower fan to generate dry air;
A circulating air passage for circulatingly supplying the dry air into the rotating drum;
A damper for adjusting a discharge ratio for discharging the dry air flowing through the circulation air passage out of the circulation air passage;
Control means for controlling the opening of the damper,
It is possible to execute a standard drying course for obtaining a dry finish state of a standard garment and a high-quality drying course having a good finish state of the garment than the standard drying course,
The control means, when executing the high-quality drying course, controls the damper to increase the discharge ratio of the dry air flowing through the circulation air passage to be discharged out of the circulation air passage at least in the initial stage of the drying process. .   2. The clothes dryer according to claim 1, wherein when the high-quality drying course is executed, the control unit controls the damper at least from the start of the drying process to increase a discharge rate of the drying air.   The clothes dryer according to claim 1 or 2, wherein in the high-quality drying course, the rotational speed of the blower fan or the amount of drying air is set higher than that of the standard drying course.   The clothes dryer according to claim 1 or 2, wherein in the high-quality drying course, the speed of the drying air supplied into the rotary drum is set higher than that of the standard drying course.   The clothes dryer according to claim 3 or 4, wherein an output of the heating means is set lower than the standard drying course in the high-quality drying course. It has a washing function and is capable of performing a washing / drying operation in which a drying process is performed after the washing process is performed,
6. In the high-quality drying course at the time of executing the washing / drying operation, the dehydration rate of the clothing at the end of the washing process is set to be lower than that in the case of the standard drying course. The clothes dryer according to one item.   The clothes dryer according to any one of claims 1 to 6, wherein a period of forward and reverse rotation of the rotating drum is set shorter than that of the standard drying course in the high-quality drying course.   The clothes dryer according to any one of claims 1 to 7, wherein in the high-quality drying course, a rotation speed of the rotary drum is set higher than that of the standard drying course.   The garment according to any one of claims 1 to 8, wherein the control device controls the damper to reduce a discharge rate of the drying air when a predetermined time has elapsed from the start of a drying process in the high-quality drying course. Dryer.   The clothes dryer according to claim 9, wherein the predetermined time is set so as to increase as the weight increases according to the weight of the clothes in the rotating drum. Load detecting means for detecting variations in clothing in the rotating drum during one rotation of the rotating drum;
The said control apparatus controls the said damper and reduces the discharge | emission ratio of a dry wind, when the dispersion | variation in the load detected by the said load detection means becomes below predetermined in the said high quality drying course. The clothes dryer as described in any one of. A temperature sensor for detecting the temperature of the drying air in the circulation air passage;
In the fine drying course, the control device controls the damper to reduce the drying air discharge rate, and then controls the damper to dry when the temperature detected by the temperature sensor exceeds a predetermined temperature. The clothes dryer as described in any one of Claim 9 to 11 which increases the discharge | emission ratio of a wind.   The clothes dryer according to claim 12, wherein the temperature sensor is provided at a position for detecting a temperature of drying air supplied to the rotating drum.

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