JP4423788B2 - Washing and drying machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a washing and drying machine having a process of blowing warm air into an inner tub to dry laundry, and being able to carry out consistently from washing to drying.
[0002]
[Prior art]
As a new washing and drying machine, the inventors have proposed a washing and drying machine having a configuration shown in FIG. Hereinafter, the configuration will be described.
[0003]
As shown in FIG. 7, the casing 1 supports the outer tub 2 by a suspension mechanism 3 in a suspended vibration-proof manner. A motor 4 is provided below the outer tub 2 through a hollow washing / dehydrating shaft 5 having a biaxial structure, and a clutch 6 that switches transmission of rotational force to the washing / dehydrating shaft 5 during washing or dehydration. The outer tub 2 is connected to an inner tub 7 rotatably provided.
[0004]
A fluid balancer 8 is provided above the inner tank 7, and a rotary blade 9 is rotatably provided on the inner bottom of the inner tank 7. The drain valve 10 drains the water in the outer tub 2. The hot air blower 11 blows hot air into the inner tub 7 for drying, and is provided substantially above the housing 1. The heater 12 heats the air blown by the hot air blower 11. The cooling fan 13 is provided on the side wall of the housing 1 and introduces cold air into the housing 1 from the outside.
[0005]
The upper surface of the outer tub 2 is covered with an outer tub cover 14, and an openable / closable inner lid 15 is provided at a substantially central portion of the outer tub cover 14. The discharge port 16 is provided in the outer tank cover 14 and discharges hot air blown by the hot air blower 11. The discharge port 16 and the end of the hot air circulation path 17 connected to the heater 12 are connected by an extendable upper bellows hose 18. A hot air outlet 19 is provided in the lower part of the outer tub 2, and the hot air outlet 19 and the hot air circulation path 17 are connected via a switching valve 20 with a retractable lower bellows hose 21. 22 is a drain outlet for draining dehumidified water. In the inner tub 7, the thrown-in clothes 23 are contained.
[0006]
Circulating air from the hot air blower 11 passes through the heater 12, the upper bellows hose 18, the discharge port 16, the inside of the inner tank 7, a small hole (not shown) around the inner tank 7, and a small hole (also shown). 1), the lower bellows hose 21 provided in the lower part of the outer tub 2, the lower part of the outer tub 2, the switching valve 20, and the hot air circulation path 17 are circulated through the passage circulating to the hot air blower 11 again.
[0007]
The operation in the above configuration will be described. In the washing / rinsing process, with the drain valve 10 and the switching valve 22 closed, clothes 23 and detergent are put into the inner tub 7, water or hot water is supplied, and the clutch 6 of the transmission mechanism is set to the washing side. Thus, the power of the motor 4 is transmitted to the rotary blade 9 through the washing / dehydrating shaft 5, and the rotary blade 9 rotates, whereby the clothes 23 are stirred in water and washed and rinsed.
[0008]
In the dehydration process, the washing process or the rinsing process is completed, and the water in the inner tub 7 is drained by opening the drain valve 10. Then, the clutch 6 of the transmission mechanism is switched to the dehydration side, and the motor 4 is powered. The water is transmitted to the inner tub 7 through the dehydrating shaft 5 and rotated, and centrifugal force is applied to the garment 23 to separate the moisture from the garment 23 and drain the water through the drain valve 10.
[0009]
In the drying process, first, after opening the switching valve 20 and slowly rotating the rotor blade 9 forward and backward, the clothes 23 attached to the inner wall of the inner tub 7 are peeled off by centrifugal force during dehydration. The rotor blades 9 are instantaneously and strongly rotated in the forward and reverse directions to stir the clothes 23 so as to be lifted upward in the inner tub 7 or the inner tub 7 is rotated.
[0010]
At the same time, the warm air blown through the heater 12 is sent into the inner tub 7 through the upper bellows hose 18 and the discharge port 16 by the warm air blower 11. This warm air warms the clothes 23 in the inner tub 7 and removes its moisture, and when it passes through the outer tub 2, the lower bellows hose 21, and the warm air circulation path 17, it is blown from the outside by the cooling fan 13. In this case, the water is condensed and dehumidified, drained from the drain port 22, and the drying proceeds without moistening the room. Thereafter, the circulating air returns to the hot air blower 11 again, and this process is repeated.
[0011]
[Problems to be solved by the invention]
In such a conventional configuration, in the drying process, the heater 12 is basically operated at the full heating output although the temperature is adjusted based on the set temperature by turning on and off. When clothing is moist, drying is accelerated by this total heating output, but when drying progresses, the amount of heat input is too much and the amount of heat hitting the clothing is large, so that wrinkles are fixed. had.
[0012]
The present invention solves the above-mentioned conventional problems. At the beginning of drying, the warm air heated with the heat amount of the entire heating output is used to increase the amount of heat applied to the clothing and dry quickly, and the heating output is reduced during the drying process. The purpose is to reduce the amount of heat applied to the clothing, moderate the progress of drying, eliminate wrinkle fixation, and improve the drying finish of the clothing.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the present invention rotatably supports an inner tank having a rotation center axis in a substantially vertical direction in an outer tank that is elastically suspended inside the casing, and is provided at the inner bottom of the inner tank. A rotary blade is rotatably provided, the inner tank or the rotary blade is driven by a driving means, hot air heated by the heating means is blown into the inner tank by the hot air blowing means, and the driving means and the hot air blowing means are supplied by the control means. The operation of the heating means, etc. is controlled, and a series of steps of washing, rinsing, dehydration, and drying are sequentially controlled.The heating means can switch the heating output to a plurality of stages. At the beginning of drying, the heating means is made strong and the forward / reverse reversal of the rotor blades and the rotation of the inner tank are alternately performed , and the heating means is changed to weak in the middle of drying and the forward / reverse reversal of the rotor blades is performed. which was configured to stop the rotation of the vessel That.
[0014]
Thereby, by the warm air heated at the beginning of drying with the amount of heat of the total heating output, the amount of heat hitting the garment can be increased and dried quickly, and during the course of drying, the heating output is reduced to reduce the amount of heat hitting the garment, The progress of drying can be moderated, wrinkle fixing is eliminated, and the drying finish of clothes can be improved.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention includes an outer tub elastically suspended inside the housing, an inner tub having a rotation center axis in a substantially vertical direction and rotatably supported in the outer tub, Rotating blades rotatably provided on the inner bottom of the inner tank, driving means for driving the inner tank or the rotating blades, hot air blowing means for blowing warm air into the inner tank, and the hot air blowing means Heating means for heating the air blown by, and control means for controlling the operation of the drive means, hot air blowing means, heating means, etc., and sequentially controlling a series of steps of washing, rinsing, dehydration, and drying. The heating means can switch the heating output to a plurality of stages, and the control means makes the heating means strong at the beginning of drying in the drying process, and reverses the forward and reverse rotation of the rotor blades and the rotation of the inner tank. was carried out alternately, varying from the middle drying the heating means to the weak DOO The are those configured to stop the rotation of the forward and reverse inversion was carried out the inner tub of the rotor blade, drying the beginning by the hot air heated by the heat of the total heating power, faster by increasing the amount of heat impinging on the garment It can be dried, and during the course of drying, the heating output can be reduced to reduce the amount of heat hitting the garment, the progress of drying can be moderated, wrinkle fixing can be eliminated, and the drying finish of the garment can be improved. it can.
[0016]
Invention according to claim 2, in the invention described in the claim 1, control means, in the drying step, after a predetermined time has elapsed a predetermined depending on the amount of clothes in the inner tank, strong heating means It is configured to switch from weak to weak, and the heating output is switched from strong to weak to the heating means after the optimal predetermined time has elapsed, depending on the amount of clothing put into the inner tub, so at the beginning of drying The warm air heated with a strong heat output can be dried quickly by increasing the amount of heat applied to the clothing, and the amount of heat applied to the clothing as a weak heating output can be reduced from the middle to moderate the progress of drying. This can eliminate wrinkle fixation and improve the dry finish of clothing.
[0017]
According to a third aspect of the present invention, in the first aspect of the present invention, the control means is configured to switch the heating means from strong to weak according to the dryness of the clothes in the inner tub during the drying process. Since the heating means is switched from strong to weak according to the dryness of the clothes in the inner tub, the amount of heat hitting the clothes is increased by the warm air heated with a high heat output at the beginning of drying. It can be dried quickly, and the amount of heat applied to the clothing can be reduced as a weak heating output from the middle, the progress of drying can be made gentle, wrinkle fixing can be eliminated, and the drying finish of the clothing can be improved be able to.
[0018]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0019]
Example 1
As shown in FIG. 1, the casing 24 supports the outer tub 25 by a plurality of suspension mechanisms 26 in a suspension and vibration-proof manner. A motor (drive means) 27 is provided below the outer tub 24, and includes a washing / dehydrating shaft 28 that is hollow and has a biaxial structure, and a clutch 29 that switches transmission of rotational force to the washing / dehydrating shaft 28 during washing or dehydration. Thus, the outer tub 24 has a central axis of rotation in a substantially vertical direction and is connected to an inner tub 30 that is rotatably provided.
[0020]
A fluid balancer 31 is provided above the inner tank 30, and a rotary blade 32 is rotatably provided at the inner bottom of the inner tank 30. A stirring blade 33 is provided on the upper surface of the rotary blade 32 and penetrates from the front surface to the rear surface. Many small holes 34 are provided. The hot air blower (hot air blowing means) 35 blows hot air into the inner tank 30 for drying, and is provided substantially above the housing 24.
[0021]
The heater (heating means) 36 is configured so that the heating output can be switched in four stages from strong to weak, and the air blown by the hot air blower 35 can be heated by changing the heating output. Yes. The cooling blower (cooling blower means) 37 is provided on the side wall of the housing 24 and introduces cold air into the housing 24 from the outside.
[0022]
An outer tub cover 38 is provided on the upper surface of the outer tub 25, and an openable / closable inner lid 39 is provided at a substantially central portion of the outer tub cover 38. A discharge port 40 is provided in the outer tank cover 38 to discharge hot air (circulated air) blown by the hot air blower 35. The discharge port 40 and the opening 42 of the hot air circulation path 41 that continues to the heater 36 are provided in a substantially opposite positional relationship, and the opening 42 and the discharge port 40 are connected by a bellows hose 43 that can expand and contract in a substantially vertical direction. is doing.
[0023]
An outlet 46 for warm air, washing water, dehumidified water or the like is provided in the lower part of the outer tub 25, and the outlet 46 and the warm air circulation path 41 are connected via a retractable lower bellows hose 47. In the lower part of the warm air circulation path 41, a drain port 49 is provided via a drain valve 48. In the inner tank 30, the thrown-in clothes 50 are contained.
[0024]
The water supply valve 51 supplies water into the inner tank 30, and the intake valve 52 opens during the drying process, and introduces outside air into the inner tank 30 through the intake port 53. The temperature sensor 54 detects the temperature of the inner wall of the outer tub 25.
[0025]
The hot air (circulated air) circulated by the hot air blower 35 passes through the heater 36, the bellows hose 43, the discharge port 40, the inner tank 30, small holes (not shown) around the inner tank 30, and the rotary blade 32. The small hole 34, the lower part of the outer tub 25, the lower bellows hose 47 provided at the lower part of the outer tub 25, and the hot air circulation path 41 are circulated to the hot air blower 35 again.
[0026]
The control unit (control unit) 55 includes a microcomputer, and is connected to the operation display unit 56. Based on the contents set by the operation display unit 56, the motor 27, the hot air blower 35, the heater 36, and the cooling The operation of the blower 37, the drain valve 48, the water supply valve 51, the intake valve 52, etc. is controlled, and a series of steps of washing, rinsing, dehydration, and drying are sequentially controlled. Is set to 1000 W (strong), and as shown in FIG. 2, it is configured to change up to 400 W in four stages as time elapses from the middle of drying.
[0027]
The operation in the above configuration will be described. In the washing and rinsing process, the clothes 50 and the detergent are put into the inner tub 30, and the control unit 55 closes the drain valve 48 based on the contents set by the operation display unit 56 from the water supply valve 51. Water or hot water is supplied, and the power of the motor 27 is transmitted to the inner tub 30 or the rotary blade 32 via the washing / dehydrating shaft 28 by switching the clutch 29 of the transmission mechanism. By rotating, moisture including detergent is passed through the garment 50, or the garment 50 is stirred and washed and rinsed in water containing the detergent.
[0028]
In the dehydration process, after the washing and rinsing process is completed, the control unit 55 opens the drain valve 48 to drain the water in the inner tub 30 from the drain port 49 to the outside, and then switches the clutch 29 of the transmission mechanism unit to the dehydration side. Then, the power of the motor 27 is transmitted to the inner tub 30 via the washing / dehydrating shaft 28, and the rotation is gradually increased to apply centrifugal force to the garment 50, thereby separating the moisture from the garment 50, the drain valve 48, It drains to the outside through the drain port 49.
[0029]
In the drying process, the control unit 55 first closes the drain valve 48 and slowly rotates the rotor blades 32 in the forward and reverse directions, so that the centrifugal force generated by the rotation of the inner tank 30 in the dehydration process is applied to the inner wall of the inner tank 30. After the attached clothes 50 are peeled off, hot air is sent into the inner tub 30 by the hot air blower 35 and the heater 36 while rotating the inner tub 30 or rotating the rotary blades 32 in the forward and reverse directions. Apply to clothing 50.
[0030]
The warm air traces the discharge port 40 and the surface of the garment 50 inside the inner tub 30, passes through the small holes 34 of the rotor blades 32, and is provided with small holes (not shown) provided on the inner wall of the inner tub 30. ) To the gap between the outer tank 25 and the inner tank 30, and then moves to the outlet 46 at the lower part of the outer tank 25.
[0031]
When passing through the inner tub 30, moisture contained in the clothes 50 is taken and flows into the warm air circulation path 41, where it is cooled by the external air by the cooling blower 37 and dehumidified. The dehumidified water collects in the lower part of the hot air circulation path 41 and is drained to the outside from the drain port 49 when the drain valve 48 is opened. In the drying process, the intake valve 52 provided on the intake side of the hot air blower 35 is opened, and outside air is introduced into the inner tank 30 from the intake port 53.
[0032]
Then, from the middle of the drying process, as shown in FIG. 2, the heating output of the heater 36 gradually decreases, and accordingly, the temperature of the warm air gradually decreases. The end of drying is detected by a separate drying end detection means (not shown), for example, by comparing the temperature near the hot air outlet of the heater 36 and the temperature near the lower outlet 46 of the outer tub 25.
[0033]
Here, depending on the type and amount of the garment 50, it may be dried in the middle of a decrease in the heating output of the heater 36, or may be reduced to the lowest heating output and the drying may be terminated. In this way, the drying proceeds and ends.
[0034]
As described above, according to the present embodiment, in the drying process, the heater 36 is made strong at the beginning of the drying, and is configured to change stepwise from the middle of the drying to the weakness. As the drying progresses, the rotation of the inner tub 30 and the rotary blades 32 does not fix the wrinkles on the garment 50 and the drying is promoted, and the garment 50 at the end of drying has less wrinkles and can improve the drying finish.
[0035]
(Example 2)
As shown in FIG. 3, the control unit 55 shown in FIG. 1 switches the heater 36 having a two-stage strength from 1000 W (strong) to 600 W (weak) during the drying process, It is configured to perform a stirring operation that repeats forward and reverse inversion. That is, when the heating output of the heater 36 is 1000 W, the rotation of the inner tank 30 and the forward / reverse rotation of the rotary blade 32 are alternately performed, but the heating output of the heater 36 is switched to 600 W and the rotary blade 32 is rotated. Only forward and reverse rotation operations are performed. Other configurations are the same as those of the first embodiment.
[0036]
The operation in the above configuration will be described. The operation from the washing process to the dehydration process and the basic operation of the drying process are the same as the operation of the first embodiment, and a description thereof will be omitted.
[0037]
In the drying process, at the beginning of drying, the heating output of the heater 36 is set to 1000 W, and the rotation of the inner tank 30 and the forward and reverse rotation of the rotary blade 32 are alternately performed. The heating output of 36 is reduced to 600 W, and only the forward / reverse rotation operation of the rotary blade 32 is performed.
[0038]
Thereby, at the beginning of drying, while the drying is not progressing so much, the heating output of the heater 36 is set to 1000 W, and the hot air heated with a high amount of heat can be quickly dried by increasing the amount of heat hitting the clothes. By alternately performing the rotation of the inner tub 30 and the forward / reverse rotation of the rotary blade 32, the rotation of the rotary blade 32 can be reduced so as not to be wrinkled. Although the heater 36 is lowered to 600 W, the amount of heat applied to the clothing is reduced as a weak heating output, the wrinkles are not easily fixed, and the heating output of the heater 36 is weak only by the forward / reverse rotation of the rotor blade 32. By frequently stirring, the progress of drying can be moderated, wrinkles are not fixed, and the drying finish of the garment 50 can be improved.
[0039]
(Example 3)
The controller 55 shown in FIG. 1 sets the heater 36 to 1000 W (as shown in FIG. 5) after a predetermined time T shown in FIG. 4 has elapsed in accordance with the amount of clothes in the inner tub 30 during the drying process. It is configured to switch from (strong) to 600 W (weak). Other configurations are the same as those of the second embodiment.
[0040]
The operation in the above configuration will be described. The operation from the washing process to the dehydration process and the basic operation of the drying process are the same as the operation of the second embodiment, and the description thereof is omitted.
[0041]
In the drying process, the heating output of the heater 36 initially changes at 1000 W. However, a predetermined time T (T1 in this embodiment) determined in advance according to the amount of clothes 50 put into the inner tank 30 at this time. ) After elapse, decrease to 600W.
[0042]
As a result, while the drying up to a predetermined time T determined in advance according to the amount of clothing 50 at the beginning of drying is not so advanced, the heating output of the heater 36 is set to 1000 W and the clothing is hit by the warm air heated with a high amount of heat. The amount of heat can be increased to dry quickly, and by rotating the inner tub 30 and forward / reverse rotation of the rotary blade 32 alternately, the rotation of the rotary blade 32 can be reduced to avoid wrinkling. .
[0043]
After the predetermined time T has passed and the drying has progressed to some extent, the heater 36 is lowered to 600 W so that the amount of heat applied to the clothing is reduced as a weak heating output so that wrinkles are hard to be fixed. Although the heating output of the heater 36 is weak although it is a rotation-only operation, the progress of drying can be moderated by frequently agitating, wrinkle fixing can be eliminated, and the drying finish of the garment 50 can be improved. it can.
[0044]
Example 4
In the drying process, the control unit 55 shown in FIG. 1 changes the heating output of the heater 36 from 1000 W (strong) to 600 W (weak) according to the dryness η of the clothes in the inner tub 30 as shown in FIG. It is configured to switch. Other configurations are the same as those of the second embodiment.
[0045]
The operation in the above configuration will be described. The operation from the washing process to the dehydration process and the basic operation of the drying process are the same as the operation of the second embodiment, and the description thereof is omitted.
[0046]
In the drying process, the heating output of the heater 36 initially changes at 1000 W, but when the dryness η of the garment 50 put into the inner tub 30 reaches a predetermined value, it is reduced to 600 W.
[0047]
Thereby, since the drying has not progressed so much during the beginning of drying, the heating output of the heater 36 is set to 1000 W, and the hot air heated with a high amount of heat can be quickly dried by increasing the amount of heat hitting the clothing, Further, by alternately performing the rotation of the inner tub 30 and the forward / reverse rotation of the rotary blade 32, the rotation of the rotary blade 32 can be reduced to avoid wrinkling.
[0048]
When it is detected that the dryness η of the garment 50 put into the inner tub 30 has reached a predetermined value due to changes in the temperature detectors (not shown) arranged at two upper and lower points in the inner tub 30, Although the heating output is reduced to 600 W, the amount of heat applied to the clothing is reduced as a weak heating output, the wrinkles are not easily fixed, and the heating output of the heater 36 is weak only by the forward / reverse rotation of the rotary blade 32. By frequently stirring, the progress of drying can be moderated, wrinkles are not fixed, and the drying finish of the garment 50 can be improved.
[0049]
【The invention's effect】
As described above, according to the first aspect of the present invention, the outer tub elastically suspended in the housing and the rotation center axis in the substantially vertical direction are rotatable in the outer tub. An inner tank to be supported; a rotary blade rotatably provided at an inner bottom portion of the inner tank; a driving means for driving the inner tank or the rotary blade; and a hot air blowing means for blowing warm air into the inner tank; The heating means for heating the air blown by the hot air blowing means, and the operation of the driving means, the hot air blowing means, the heating means, etc. are controlled, and a series of steps of washing, rinsing, dehydration and drying are sequentially controlled. The heating means is capable of switching the heating output to a plurality of stages, and the control means strengthens the heating means at the beginning of drying in the drying process, and performs forward and reverse reversal of the rotor blades. alternately performs the rotation of the inner tub, said heating means from the middle dried Since configured to stop the rotation of the inner tub performs forward and backward inversion of the rotating blades with varied to a dry beginning, while the drying does not much headway has Shun strong heating power of the heating means, The hot air heated with a high amount of heat increases the amount of heat hitting the clothing and removes moisture from the input clothing, allowing it to dry quickly.Alternatively , rotating the inner tub and rotating the blades alternately Wrinkles can be reduced by reducing the rotation of the wings, and after drying has progressed to some extent over time, the heating means is changed to weak to produce a weak heating output, and the amount of heat applied to the clothing is reduced to fix the wrinkles. It is difficult to do, and only the forward and reverse rotation of the rotor blades, the heating output of the heating means is weak, but by frequently stirring, the progress of drying can be moderated, wrinkle fixing is eliminated, clothing It is possible to improve the dry finish.
[0050]
Further, according to the invention described in claim 2 , the control means is configured to switch the heating means from strong to weak after a predetermined time elapses in accordance with the amount of clothes in the inner tub during the drying process. Depending on the amount of clothing put into the inner tub, the heating output is switched from strong to weak after a long time when the amount of clothing is large and after a short time when the amount of clothing is small. The warm air heated with a strong heat output can be dried quickly by increasing the amount of heat applied to the clothing, and the amount of heat applied to the clothing as a weak heating output can be reduced from the middle to moderate the progress of drying. This can eliminate wrinkle fixation and improve the dry finish of clothing.
[0051]
According to the invention described in claim 3 , since the control means is configured to switch the heating means from strong to weak according to the dryness of the clothes in the inner tank in the drying process, Depending on the dryness of the clothing, the heating means is switched from strong to weak, so at the beginning of drying, the warm air heated with the heat amount of strong heating output can be quickly dried by increasing the amount of heat hitting the clothing. When the wrinkles are easily fixed, the heating output is weakened to shift to gentle drying, and the drying finish of the clothes at the end of drying can be improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a washing / drying machine according to a first embodiment of the present invention. FIG. 2 is an operation time chart of the main part of the washing / drying machine. FIG. 4 is a diagram showing the relationship between the amount of clothes and the time required to switch the heating output of the washer / dryer according to the third embodiment of the present invention. Time chart [FIG. 6] Operation time chart of main parts of the washer / dryer according to the fourth embodiment of the present invention [FIG. 7] Cross-sectional view of the conventional washer / dryer
24 Housing 25 Outer tank 27 Motor (driving means)
30 Inner tank 32 Rotating blade 35 Hot air blower (hot air blower)
36 Heater (heating means)
55 Control part (control means)

Claims (3)

An outer tank elastically suspended inside the housing, an inner tank having a rotation center axis in a substantially vertical direction and rotatably supported in the outer tank, and an inner tank at the inner bottom of the inner tank. A rotating blade, a driving means for driving the inner tank or the rotating blade, a warm air blowing means for blowing warm air into the inner tank, and a heating means for heating the air blown by the warm air blowing means, Control means for controlling the operation of the driving means, hot air blowing means, heating means, etc., and sequentially controlling a series of steps of washing, rinsing, dehydration, and drying, and the heating means switches the heating output to a plurality of stages. In the drying process, the control means makes the heating means strong at the beginning of drying , and alternately performs forward / reverse reversal of the rotary blades and rotation of the inner tank, and the heating means is turned on during the drying process. Before turning the rotor blade forward and reverse. Configuration the washer-dryer so as to stop the rotation of the inner tub. The washing / drying machine according to claim 1 , wherein the control means is configured to switch the heating means from strong to weak after a predetermined time has elapsed in accordance with the amount of clothes in the inner tub during the drying process . Control means, in the drying process, depending on the dryness of the clothes in the inner tank, washing and drying machine of claim 1 Symbol mounting configured to switch the heating means to Tsuyokara weak.

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