JP2010082346A - Drying machine, and washing drying machine - Google Patents

Abstract

【Task】
Provided is a washing / drying machine capable of reducing power consumption without exhausting high-humidity air into a room and further capable of saving water and capable of drying operation.
[Solution]
In the drying operation process, warm air heated by a heater was blown to the rotating drum or inner tank to evaporate moisture from the object to be dried, and wall condensation was performed while warming the outer tank and circulation duct with high-humidity air from the inner tank. A heater heating and drying step for dehumidification, and an air intake unit that sucks air in a space with the housing from the upper surface of the outer tub into the air passage, air outside the air passage is sucked into the air passage, and the same amount of air is supplied to the drain hose. It is set as the driving | operation which divided | segmented and divided the ventilation exhaust process exhausted via time. In addition, after the end or end of the drying operation, water is supplied through the drain hose while ensuring the pressure of the drain hose.
【effect】
Since it is possible to perform a dry operation without exhausting humid air into the room, power consumption can be reduced without deteriorating the indoor environment, and water can be saved because cooling water is not used when the heater is heated.
[Selection] Figure 3

Description

  The present invention relates to a dryer or a washing dryer provided with means for drying clothes.

  Drying clothes using a dryer or a washing and drying machine that can perform washing to drying continuously creates high-temperature and low-humidity air with a blower fan and heat source, and blows it into the washing tub to raise the temperature of the clothes. This is done by evaporating moisture from the clothing and discharging the evaporated moisture out of the machine. There are patent documents 1-3 as a prior art regarding this.

  There are two methods for removing the evaporated water: an exhaust system that discharges it directly to the outside of the washing and drying machine (always supplying fresh air) and a dehumidification system that cools the evaporated water to condense and removes the water (circulates the same air). . Air-cooling or water-cooling dehumidification is performed in the first half of the drying process in order to shorten time and reduce the amount of water used and power consumption. In the second half, the surrounding dry outside air is supplied, and the warm air after being blown onto the laundry is exhausted as it is. There is a method to do.

JP 2008-104715 A JP 2008-110135 A Japanese Utility Model Publication No. 3-128094

  However, with the conventional technology that exhausts the warm air after being blown onto the laundry as it is, it is possible to reduce the time and reduce the amount of water used and power consumption. The air is exhausted as it is, and the indoor environment is deteriorated.

  Accordingly, an object of the present invention is to provide a washing / drying machine or a drying machine capable of reducing power consumption without exhausting the high-humidity air into a room and further capable of saving water and performing a drying operation.

  In order to achieve the above object, the present invention includes an outer tub whose inside becomes a drying chamber at the time of drying, a rotating drum or an inner tub which is rotatably arranged in the outer tub and stores laundry, and the rotating drum or A motor for driving the inner tub, a casing for supporting the rotating drum or the inner tub, an air passage for blowing warm air to the rotating drum or the inner tub, a heating device, a drying device having an air blasting device, and the air blowing Intake air to the air flow path upstream of the means, a drain hose for discharging water discharged from the outer tank, and exhausting all or part of the air discharged from the rotating drum or the inner tank via the drain hose It is set as the structure provided with the means to do. In the drying operation process, hot air is blown to the rotating drum or inner tub to evaporate moisture from the clothing that is the object to be dried, and the high temperature and high humidity air exits the rotating drum or inner tub and returns to the fan suction. Heating and drying the heater and drying duct which cools and cools the tank and the circulation duct and dehumidifies it from the circulating air, and the air inside the casing outside the ventilation path is sucked into the ventilation path from the intake means, and the same amount of air It is set as the driving | operation which combined the ventilation exhaust process which exhausts through the said drainage hose for every time.

  According to the present invention, in the heater heating / drying step, the heater input can be effectively used for moisture evaporation heat from clothing, clothing heating, and heating of the outer tub and the circulation air passage system. Since all or part of the air discharged from the tank is discarded from the drain hose to the drain outlet, drying operation can be performed without exhausting the humid air into the room. For this reason, power consumption can be reduced without deteriorating the indoor environment. Further, during the heater heating and drying process, cooling water for water cooling and dehumidification is not required, so that water can be saved.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view of a washing / drying machine according to a first embodiment of the present invention. On the upper part of the base 1, an outer frame 2 composed of a steel plate and a resin molded product is placed. The front side of the outer frame 2 is provided with a door 3 for loading and unloading the laundry 30, a front cover 22 and a back cover 23 on the back.

  FIG. 2 relates to a first embodiment of the present invention. FIG. 2 is a sectional view of a washing and drying machine at the time of a heater heating drying process in which warm air is blown to a rotating drum to evaporate moisture from clothes that are drying objects. Show.

  FIG. 3 relates to the first embodiment of the present invention, in which air outside the air passage is sucked into the air passage from the air intake means, and the same amount of air is exhausted through the drain hose. Sectional drawing of the washing-drying machine at the time of a process is shown.

  First, the schematic structure of the washing / drying machine and the washing / dehydrating process common to FIGS. 2 and 3 will be briefly described. An outer tub 20 is provided inside the outer frame 2. The outer tub 20 is supported by a plurality of lower suspensions 21. The rotating drum 29 inside the outer tub 20 has the laundry 30 put in with the door 3 opened, and the outer periphery of the opening of the rotating drum 29 reduces vibration due to unbalance of the laundry 30 during dehydration. A fluid balancer 31 is provided. A plurality of lifters 33 for lifting the laundry 30 are provided inside the rotary drum 29. The rotating drum 29 is directly connected to a drum driving motor 36 via a main shaft 35 connected to a rotating drum metal flange 34. A rubber packing 38 made of an elastic body is attached to the opening of the outer tub 20. The packing 38 serves to maintain the watertightness between the outer tub 20 and the door 3. This prevents water leakage during washing, rinsing and dehydration. The rotating drum 29 has a large number of small holes (not shown) for centrifugal dehydration and ventilation on the side wall. A drain port 37 opened in the bottom wall of the outer tub 20 is connected to the drain hose 9 via the drain valve 8.

  The drying device 6 including the circulation duct 5 that guides air flow to the laundry 30 in the rotating drum 29, the fan 61 that is the air blowing means, and the heater 62 that is the heating means is fixed to the outer frame 2 away from the outer tub 20 (not shown). Has been. The circulation duct 5 and the ventilation port 32 are connected substantially horizontally by the bellows 4 having a flexible structure, and the outlet of the heater 62 and the blowout nozzle 11 are located between the uppermost surface and the center of the outer tub 20 and from the center of the outer tub 20 to the front. A flexible bellows 7 is connected to the outer tank 20 at a position so as to absorb vibration of the outer tank 20. Temperature sensors (not shown) are provided at the drain port 37 and the intake and discharge ports of the fan 61.

  In the drum type washing and drying machine configured as described above, in the washing process, the laundry is put into the rotating drum 29, the water is supplied with the drain valve 8 closed, and the washing water is stored in the outer tub 20, and the rotating drum 29 is rotated to wash the laundry 30. Further, in the dehydration step, the drain valve 8 is opened to drain the washing water in the outer tub 20, and the rotary drum 29 is rotated to perform centrifugal dehydration. In the heater drying process, the rotary drum 29 is rotated with the drain valve 8 open, and the fan 61 is operated to suck out the air in the outer tub 20 from the air vent 32 and pass it through the circulation duct 5. After that, the heated air is heated by the heater 62 to generate the circulating air 12 that is blown from the blowing nozzle 11 toward the laundry 30 in the rotary drum 29. The dehumidification of the circulating air 12 that has been moistened by removing moisture from the laundry 30 in the rotating drum 29 is dehumidified by condensing on the inner wall while applying heat to the outer tub and the circulation duct while heating them.

  On the other hand, in the air exhaust process, the heater 62 is turned off. The external air 16 sucked from the gap at the bottom of the base 1 by opening the intake valve 13 is heated while receiving the exhaust heat of the outer tub 20, the motor 36 and the fan 61 while flowing through the side surface of the outer tub 20. The air is sucked into the fan 61 together with the high-temperature housing internal air 15 accumulated in the space between the upper surface of the tank 20 and the outer frame 2. The sucked interior air 14 is blown to the laundry 30 to take moisture from the laundry 30, gets wet, passes through the drain hose 9 from the drain port 37, breaks the water seal of the drain trap 10, and enters the drain port 39. Discharged. In the case of a general drain trap, since the water seal height is about 50 to 80 mm, the pressure on the drain hose 9 side is required to be about 1000 Pa or more to break the water seal. Moreover, in order to suppress the odor from the drain port 39, it is necessary to ensure a high pressure (a pressure higher than a predetermined pressure) even after the water seal is broken. The fan 61 is controlled.

  Here, as shown in FIG. 4A, the connecting portion between the drainage hose 9 and the drainage port 39 is hermetically sealed with a sealing material 39a or the like so that the exhaust from the drainage hose 9 does not leak into the room. Moreover, the connection method of the other kind of drain trap is shown in FIG.4 (b), (c). FIG. 4B shows a method of connecting via the adapter 39 b when the inner diameter of the drain port 39 is smaller than the outer diameter of the drain hose 9. FIG. 4C shows a general drain trap 10 structure attached to a waterproof pan. In the case of this drain trap 10, since a hole 10a through which water from the waterproof pan flows is opened, a lid 39c is attached to keep the drain hose 9 and the drain trap 10 sealed.

  After the completion of drying, as shown in FIG. 5, the cooling water 52 is flowed by reducing the rotational speed of the fan 61 to a pressure level that does not break the water seal while keeping the pressure on the drain hose 9 side higher than the pressure on the drain port 39 side. The water sealing of the drain trap 10 is restored and the drying process is completed.

  In this way, after the drying is completed, water is supplied to the drainage port 39 via the drainage hose while maintaining the pressure on the drainage hose 9 side at a predetermined level or more, so that the odor from the drainage port 39 is suppressed and the drain trap 10 The water seal can be restored.

  The drain trap can be recovered at the end of the drying operation (for exhaust of the drain hose) or after the drying operation is completed as long as the pressure on the drain hose 9 side is kept high.

  FIG. 6 schematically shows an operation pattern of the drying process in the present example. In the present embodiment, as described above, the heater heating and drying operation is performed in the initial stage of drying, and then the air is exhausted. In the heater heating and drying step, the circulating air is heated by the heater and the warm air is sent to the inner tank. The warm air warms the clothing, and a portion of the heat is consumed from the clothing to evaporate the water. For this reason, the humidity of the circulating air at the inner tank outlet is almost close to the saturation humidity. Furthermore, the circulating air returns to the suction of the blower fan while partially applying heat to the outer tank and the circulation duct. Since the circulating air reaches the saturation humidity at the inner tank outlet as described above, when it is cooled on the inner surface of the outer tank and the circulation duct, the water is condensed on the inner wall as the temperature decreases. However, unlike the case where the circulating air is forcibly cooled and dehumidified as in water-cooled dehumidification, it is possible to condense while warming the outer tub and the circulation duct. For this reason, in the heater heating and drying process, the hot air temperature and the clothing temperature are not constant, and the temperature continues to rise. In association with this, since the heat is continuously applied to the inner and outer tubs and the circulation duct, these temperatures also continue to rise. That is, condensation and dehumidification can be performed while storing heat in the clothes and the inner and outer tubs. In the ventilation / exhaust process, the air in the space with the housing is sucked from the upper surface of the outer tank through the intake valve, and the same amount of circulating air is exhausted through the drainage hose. It drops rapidly. For this reason, evaporation from clothing occurs using heat transferred from the air and heat stored in the clothing and the inner tub during the heater heating and drying step. After the temperature of the clothes and the inner tub approaches equilibrium, the evaporation from the clothes is continued mainly by the heat transferred from the air.

  FIG. 7 shows the relationship between the amount of power consumed and the degree of dryness of the heater input in these drying processes, with 6 kg of clothing, the fan rotation speed A during heater heating and drying, and the rotation speed B during ventilation exhaust are both 13500 rotations per minute. This is schematically shown based on the results obtained. Here, when the heater heating capacity is maximum, “large” is set, and when half the heating capacity is set, “small” is set. The accompanying table shows the ratio of the warm air temperature, the clothing average temperature, and the outer tub temperature just before the air exhaust process when the heater input is “large”, with the heater input being “small” as a reference.

  As can be seen from this figure, the rate of increase in dryness with respect to the amount of power consumed does not depend much on the size of the heater input during heater heating and drying. That is, the change in the drying speed in the heater heating drying process is caused by the amount of consumed power regardless of the magnitude of the heater input. On the other hand, the initial dryness change in the blower exhaust process after the heater heating drying process can be increased as the hot air temperature, the clothing temperature, and the outer tub temperature immediately before the blower exhaust are higher. From the above, at this dry load level, it is possible to further reduce the power consumption by heating the clothing as quickly as possible to increase the clothing temperature immediately before the blow-off process. However, if the drum shape, the clothing load, the heat capacity of the outer tub, and the like change, the above relationship does not always hold. FIG. 8 schematically shows a heating input pattern of the heater. For example, when the load on clothes is small and the heating time is strongly dependent on the drying degree change in the heater heating process, the heater configuration can be divided into at least two parts with respect to the maximum input, and (b) to (d) in the figure. As shown in FIG. 5, when the maximum input time is “strong”, it is desirable to adjust the time by applying “weak” with a lower input than that to a part or all of the intervals. In particular, when there is a large heat dissipation loss from the outer tank or circulation duct, the heater input is initially set to “weak” as shown in FIG. It is desirable to raise the wind temperature. If the heat dissipation loss is small, as shown in FIG. 8 (d), the heater input is initially "strong" to increase the warm air temperature and promote heat transfer to the clothing, outer tub and circulation duct. It is desirable to maintain the warm air temperature at “weak” or raise it gently. Regarding the fan rotation speed, the A rotation per minute in the heater heating process and the B rotation per minute in the air blowing / exhausting process shown in FIG. 6 are not necessarily the same and constant. It is necessary to maintain a high pressure in the B rotation per minute at the time of blowing and exhausting because the water sealing is blown off as described above. On the other hand, the A rotation per minute, for example, when the clothing load is small and the drying amount from the entire clothing is small, as described above, the amount of air-cooled condensation at a relatively low temperature in the circulation air passage, It is desirable from the aspect of reducing power consumption to reduce the rotation speed so that the amount of dryness from the entire clothes can be balanced. Of course, the opposite is true when the clothing load is high.

  FIG. 9 is a block diagram of the control device 138 of the washing / drying machine. A microcomputer 150 is connected to the operation button input circuit 151, the water level sensor 134, and the temperature sensor 152 connected to each switch 112, 113, 113a, and various information signals in the user's button operation, washing process, and drying process. Receive. The output from the microcomputer 150 is connected to a drive circuit 154 and connected to a water supply electromagnetic valve 116, a drain valve 8, a motor 36, a fan 61, a heater 62, an intake valve 13, a water supply valve 19, and the like, and these are opened, closed, and rotated. Control energization. Further, it is connected to a 7-segment light emitting diode display 114, a light emitting diode 156, and a buzzer 157 for notifying the user of the operating state of the washing machine.

  The microcomputer 150 is activated when the power switch 139 is pressed and the power is turned on, and executes a basic control processing program for washing and drying as shown in FIG.

Step S101
Check the status of the washer / dryer and make initial settings.

Step S102
The display 114 of the operation panel 106 is turned on, and a washing / drying course is set according to an instruction input from the operation button switch 113. When no instruction is input, the standard washing / drying course or the previous washing / drying course is automatically set. For example, when an instruction is input to the operation button switch 113a, a high finishing course for drying is set.

Step S103
The process branches after monitoring the instruction input from the start switch 112 of the operation panel 106.

Step S104
Perform the laundry. Laundry is performed in the order of washing, intermediate dehydration, rinsing, and final dehydration. Since this is the same as a normal drum-type washing and drying machine, a detailed description thereof is omitted.

Step S105
The process branches after confirming whether the washing / drying course is set. When only the washing course is set, the driving is ended.

Step S106
The initial temperatures of the drain port 37 and the fan intake port at the lower part of the outer tub 20 are measured.

Step S107
When a washing / drying course is set, high-speed dewatering is performed. In the high-speed dewatering, the rotating drum 29 is rotated at a high speed to effectively dehydrate moisture from the clothes (centrifugal dehydration at a high speed). In this embodiment, the rotational speed of the rotary drum is set to about 1700 revolutions per minute.

Step S108
After starting high-speed dewatering, check whether the specified time has come and branch the process.

Step S109
Measure the initial temperature of the hot air temperature.

Step S110
A heater heating drying process is performed. The fan 61 is rotated at a high speed, the heater 62 is energized, the forward and reverse rotation of the rotary drum 29 is repeated, and hot warm air is blown on the clothes while changing the position of the clothes in the rotary drum 29. The temperature of the entire clothing rises and moisture evaporates from the clothing.

Step S111
An intermediate temperature of the drainage port 37 and the fan intake port at the lower part of the outer tub 20 and the hot air is measured.

Step S112
The process branches after confirming whether the elapsed time from the start of drying has reached the specified time.

Step S113
The process branches after confirming whether the difference between the intermediate temperature and the initial temperature has reached the specified temperature.

Step S114
When the specified time has elapsed from the start of drying, or when the difference between the intermediate temperature and the initial temperature is greater than the specified temperature, the dryness of the laundry (= the weight of the dry cloth / the weight of the compress) is 0.90 to It is determined as 0.95, and the air exhaust process is executed. The heater 62 is turned off, the intake valve 13 is opened, the fan 61 is rotated at high speed, and the moisture of the laundry 30 is discharged from the drain hose 9 to the drain port 39.

Step S115
The end temperatures of the drain port 37 and the fan intake port at the lower part of the outer tub 20 are measured.

Step S116
The process branches after confirming whether the elapsed time from the start of exhausting has reached the specified time.

Step S117
The process branches after confirming whether the difference between the intermediate temperature and the end temperature has reached the specified temperature.

Step S118
When the specified time has elapsed since the start of exhausting, or when the difference between the intermediate temperature and the end temperature is greater than the specified temperature, the dryness of the laundry (= dry cloth mass / compress weight) is 1.0 or more. It is determined that the drying is completed, and the pressure on the drain hose 9 side is kept higher than the pressure on the drain port 39 side, and the rotation speed of the fan 61 is lowered to a pressure level that does not break the water seal, and the water supply valve 19 is opened to supply water. The water trap of the drain trap 10 is restored.

Step S119
The process branches after confirming whether the elapsed time after opening the water supply valve 19 has reached a specified time.

Step S120
The process branches after confirming whether or not the pressure of the water level sensor 134 has reached a specified pressure.

Step S121
When the specified time has elapsed since the cooling water valve 19 was opened, or when the pressure of the water level sensor 134 has become larger than the specified pressure, it is determined that the water sealing of the drain trap 10 has been recovered, and the fan 61 is stopped. The motor 36 is stopped, the intake valve 13 is closed, the water supply valve 19 is closed, and the drying process is completed.

  The washing and drying machine configured as described above stores the laundry 30, the rotating drum 29, the outer tub 20, the air inside the housing 15 stored in the space of the outer frame 2, and the like in the heater heating and drying process. By the air exhaust process using the heat and dry external air 16, the power consumption of the heater 62 in the latter half of the drying process can be reduced.

Here, under the conditions of 6 kg of clothing, heater input of about 1200 W, and air volume of about 1.6 m ³ / min, the operation pattern of the heater heating and drying process is about 20 minutes and the air exhaust and exhaust process is about 80 minutes compared with the normal water-cooled dehumidification drying. Power consumption can be halved.

  Furthermore, when the housing internal air 14 sucked into the fan 61 is warmed by exhaust heat from the outer tub 20, the motor 36, the fan 61, etc., the power consumption of the drying process is compared with the case where the external air 16 is directly sucked About 5% of the total amount can be reduced.

  Further, even if the external air 16 is sucked, the water content of the laundry 30 is discharged from the drain hose 9 to the drain port 39, so that the power consumption can be reduced without deteriorating the indoor environment. Furthermore, since the water sealing of the drain trap 10 is recovered while maintaining the internal pressure on the drain hose 9 side at the end of drying, the odor from the drain port 39 does not leak into the room and deteriorate the environment.

  FIG. 11 schematically shows an operation pattern of the drying process in another embodiment. The drying process in the present embodiment performs the air exhaust process in the initial stage of drying, and then performs the heater heat drying process and the air exhaust process again. In the initial air exhaust process, moisture is evaporated from the clothing by heat transfer to the clothing by blowing without raising the air temperature. After evaporation from the clothing has progressed to some extent, the heater heating and drying process and the air blowing and exhausting process are performed again as in the embodiment shown in FIG. The present embodiment is effective when the ambient outside humidity taken in as intake air is low, or when the clothing is relatively thin and the material easily evaporates moisture. Moreover, since the heater heating process is performed after increasing the dryness of the clothes in the air exhaust process in the initial stage of the drying process, the clothes can be efficiently heated. Moreover, since the proper selection point regarding a heater heating pattern and fan rotation speed control is the same as that of the Example shown in FIG. 6, description is abbreviate | omitted.

  FIG. 12 schematically shows an operation pattern of the drying process in another embodiment. The drying process in the present embodiment includes a heater heating drying process and an air blowing / exhausting process. After a part of the heat of the clothes is consumed for moisture evaporation and the surface temperature of the clothes has settled to some extent, the heater heating drying process is performed again. The subsequent air exhaust process is performed. This embodiment is an effective operation pattern when the ambient ambient air is relatively high and the amount of air heating can be reduced, or when the clothes are relatively thick and the depth is difficult to cool once warmed to the depth. Moreover, since the proper selection point regarding a heater heating pattern and fan rotation speed control is the same as that of the Example shown in FIG. 6, description is abbreviate | omitted.

  FIG. 13 shows a modification of the embodiment shown in FIG. 2 and shows a cross-sectional view of the washing / drying machine in the blow-off process. A duplicate description of the configuration common to the first embodiment is omitted.

  The difference from the embodiment shown in FIG. 2 is that an overflow pipe 17 for discharging abnormal water is provided on the door 3 side of the outer tub 20, the drainage hose 9 is thickened, and the moisture from the laundry 30 is drained from the outlet 37. At the same time, it is also discharged from the overflow pipe 17. As a result, the ventilation resistance on the discharge side is reduced and the discharge air volume is increased, whereby the discharge time is shortened and the power consumption of the drying process can be further reduced.

1 is a perspective view of a washing / drying machine according to a first embodiment of the present invention. Sectional drawing of the washing-drying machine which concerns on 1st Example of this invention and is a heater heating drying process is shown. Sectional drawing of the washing-drying machine which concerns on 1st Example of this invention and is a ventilation exhaust process is shown. The drain hose and the drain trap according to the first embodiment of the present invention also show a sectional view of the connection structure. Sectional drawing of the washing-drying machine which concerns on 1st Example of this invention after completion | finish of drying is shown. The operation pattern of the heater input, the intake valve, and the fan speed in the drying process according to the first embodiment of the present invention is shown. This relates to the first embodiment of the present invention, and shows the relationship between the power consumption and the dryness when the heater input is large or small. The heater input pattern at the time of heater overheating according to the first embodiment of the present invention is shown. The block diagram of the control apparatus of a washing / drying machine according to the first embodiment of the present invention is shown. The flowchart of the control processing program of a washing-drying machine which concerns on 1st Example of this invention is shown. The operation pattern of the heater input, the intake valve, and the fan rotation speed in the drying process according to the second embodiment of the present invention is shown. The operation pattern of the heater input, the intake valve, and the fan speed in the drying process according to the third embodiment of the present invention is shown. Sectional drawing of the washing-drying machine which concerns on the modification of 1st Example of this invention and is a drying process latter half is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Outer frame 3 Door 4, 7 Bellows 5 Circulation duct 6 Drying device 8 Drain valve 9 Drain hose 10 Drain trap 10a Hole 11 Blowing nozzle 12, 53 Circulating air 13 Intake valve 14, 15 Housing internal air 16 External air 17 Overflow pipe 18 Exhaust hose 20 Outer tank 21 Suspension 22 Front cover 23 Back cover 27 Filter duct 29 Rotating drum 30 Laundry 31 Fluid balancer 32 Ventilation port 33 Lifter 34 Flange 35 Main shaft 36 Drum drive motor 37, 39 Drain port 38 Packing 39a Seal material 39b Adapter 39c Lid 40 Air duct 40a Air outlet 42 Air inlet 51 Cooling water supply pipe 59 Filter 61 Fan 62 Heater 67 Blower 68, 116 Water supply solenoid valve 69 Water supply hose

Claims (5)

An outer tub whose inside becomes a drying chamber at the time of drying, a rotating drum or an inner tub that is rotatably arranged in the outer tub, stores laundry, a motor that drives the rotating drum or the inner tub, and the rotating drum Or a housing that supports the inner tub, a blowing passage for blowing warm air to the rotating drum or the inner tub, a drying device having a heating means and a blowing means, an intake means in the blowing passage upstream of the blowing means, In the drainage hose that drains the water discharged from the outer tub, when drying, the air circulates in the order of the blowing means, the heating means, the outer tub, the blowing means,
Means for exhausting all or part of the air discharged from the rotating drum or inner tank via the drain hose;
In the drying operation process, hot air is blown to the rotating drum or the inner tub to evaporate moisture from the clothing to be dried, and further, the outer tub and the circulation duct are warmed and air-cooled and condensed on the inner wall to dehumidify the circulating air. The heater heating and drying step, and the air exhausting step for sucking air inside the housing outside the air passage from the air intake means into the air passage and exhausting the same amount of air through the drain hose are separated by time. Washing and drying machine characterized by combined operation.   The washing / drying machine according to claim 1, wherein the drying operation process is performed in the order of a heater heating drying process and a blower exhaust process.   2. The washing / drying machine according to claim 1, wherein the drying operation step is performed in the order of a blower exhausting step, a heater heating drying step, and a blower exhausting step again.   2. The washing / drying machine according to claim 1, wherein the drying operation step is performed once or a plurality of times in the middle of the heater heating drying step and the air exhausting step. An outer tub whose inside becomes a drying chamber at the time of drying, a rotating drum or an inner tub that is rotatably arranged in the outer tub, stores laundry, a motor that drives the rotating drum or the inner tub, and the rotating drum Or a housing that supports the inner tub, a blowing passage for blowing warm air to the rotating drum or the inner tub, a drying device having a heating means and a blowing means, an intake means in the blowing passage upstream of the blowing means, In a drier for draining water discharged from the outer tub, when drying, air circulates in the order of the blowing means, the heating means, the outer tub, the blowing means,
Means for exhausting all or part of the air discharged from the rotating drum or inner tank via the drain hose;
In the drying operation process, hot air is blown to the rotating drum or the inner tub to evaporate moisture from the clothing to be dried, and further, the outer tub and the circulation duct are warmed and air-cooled and condensed on the inner wall to dehumidify the circulating air. The heater heating and drying step, and the air exhausting step for sucking air inside the housing outside the air passage from the air intake means into the air passage and exhausting the same amount of air through the drain hose are separated by time. A dryer characterized by combined operation.

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