JP2013000371A - Drying machine - Google Patents

Abstract

[PROBLEMS] To achieve further energy saving by efficiently using heat generated by a motor or the like in a housing for drying, and reducing flow path loss when drying air passes through an air blowing path. Provide a dryer.
An outer tub 20 whose inside becomes a drying chamber at the time of drying, a rotating drum 29 rotatably disposed in the outer tub 20 and storing laundry, and a drum driving motor for driving the rotating drum 29. 36, the housing 2 that supports the rotating drum 29, the air passage for sending warm air to the rotating drum 29, the drying filter 19 that collects lint, the rotating blades 26, and the rotating blades 26. In a dryer having a fan 61 having a fan drive motor 28 for driving, the fan 61 is arranged so that the fan drive motor 28 is located on the outer tub 20 side and the rotary blade 26 is located on the counter-outer tub 20 side. did.
[Selection] Figure 5

Description

  The present invention relates to a 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 two methods for removing the evaporated water: an exhaust system that discharges it directly outside the washing and drying machine (always supplying new air) and a dehumidification system that cools the evaporated water and condenses it to remove the water (circulates the same air). .

  However, in the exhaust system in which the warm air after being blown onto the laundry is exhausted as it is, high humidity air flows out into the room around the dryer or the laundry dryer, so the indoor environment is deteriorated. Therefore, the heating means is stopped during the drying process, the air in the space with the housing from the upper surface of the outer tub is sucked into the air passage, and all or part of the air discharged from the washing tub is exhausted through the drainage hose. The technique to do is proposed (the following patent document 1).

  Further, in Patent Document 2 below, the fan air inlet is arranged so as to be substantially opposite to the circumferential surface of the water tank, and is inclined around the drum rotation axis so that the fan drive motor unit is mounted on the fan body. On the other hand, it is described that it is arranged toward the washing machine main body side opposite to the water tank.

JP 2010-17270 A JP 2008-1113975 A

  In the configurations described in Patent Documents 1 and 2 above, the blower fan drive motor, which is a heating element, is provided close to the housing surface facing the housing side, that is, the outside with respect to the substantially disc-shaped fan body. Yes. That is, the heat from the fan drive motor heats the air between the fan body and the casing, and the temperature of the casing surface rises. Since the surface of the housing is cooled by room air, there is a problem that the heat stored in the housing is easily radiated.

  In the configuration described in Patent Document 2, the air after passing through the drying filter provided in the portion close to the housing surface is bent away from the housing surface and close to the outer tub for easy insertion and removal. After that, since it is sent to the inlet of the blower fan, pressure loss due to the bending occurs.

  The object of the present invention is to further reduce energy consumption by reducing the flow path loss when the air for drying passes through the air blowing path while efficiently using the heat generated by a motor or the like in the housing for drying. It is to provide a dryer that realizes the above.

  In order to achieve the above object, the present invention provides an outer tub whose inside becomes a drying chamber when drying, an inner tub that is rotatably arranged in the outer tub and stores laundry, and a motor that drives the inner tub. A fan that has a housing that supports the inner tub, an air passage for sending warm air to the inner tub, a filter that collects lint, a rotating blade, and a fan motor that drives the rotating blade In the drier provided, the fan is arranged so that the fan motor is located on the outer tub side and the rotary blade is located on the non-outer tub side.

  According to the present invention, the heat generated by a motor or the like in the housing is efficiently used for drying, and the flow loss when the drying air passes through the air blowing path is reduced to further save energy. Can be provided.

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 in the middle of a drying process is shown. Sectional drawing of the washing-drying machine which concerns on 1st Example of this invention and is a drying process latter half is shown. Sectional drawing of the washing-drying machine which concerns on 1st Example of this invention after completion | finish of drying is shown. It is a perspective view which shows the structure of the drying air path of the washing / drying machine which concerns on 1st Example of this invention. It is AA sectional drawing which shows the structure of the washing-drying machine which concerns on 1st Example of this invention. It is AA sectional drawing which shows the structure of the washing-drying machine which concerns on 1st Example of this invention. It is BB sectional drawing which shows the structure of the ventilation fan part of the air path of the washing / drying machine which concerns on 1st Example of this invention. 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.

  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, a casing 2 configured by combining a steel plate and a resin molded product is placed. A door 3 and a front cover 22 for taking in and out the laundry 30 are provided on the front surface of the housing 2, and a back cover 23 is provided on the back surface.

  FIG. 2 relates to the first embodiment of the present invention, and shows a cross-sectional view of the washing / drying machine in the middle of the drying process. FIG. 3 relates to the first embodiment of the present invention, and shows a cross-sectional view of the washing / drying machine in the latter half of the drying process. FIG. 4 shows a cross-sectional view of the washing / drying machine at the end of the drying process. In FIGS. 2 to 4, a portion from a fan to a heater, which will be described later, is shown as a simplified schematic diagram for explanation.

  Inside the housing 2 is provided with an outer tub 20 whose inside becomes a drying chamber during drying. The outer tub 20 is supported by a plurality of lower suspensions 21. The rotating drum 29 (inner tub) supported by the housing 2 accommodates the laundry 30 that is put in with the door 3 opened. The outer periphery of the opening of the rotating drum 29 holds the laundry 30 during dehydration. A fluid balancer 31 for reducing vibration due to unbalance is provided. The rotating drum 29 is rotatably arranged in the outer tub 20 and is directly connected to a drum driving motor 36 provided on the back surface of the outer tub 20. 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. The drainage port 37 opened in the bottom wall of the outer tub 20 is connected to the drainage hose 9 via the drainage valve 8 and is configured to exhaust all or part of the air discharged from the rotary drum 29.

  A drying means 6 including a water-cooled dehumidifying duct 5 for drying the laundry 30 in the rotary drum 29, a fan 61 as a blowing means, and a heater 62 as a heating means is fixed to the housing 2 away from the outer tub 20 (not shown). Has been. The water-cooled dehumidifying duct 5 and the air vent 32 are connected substantially horizontally by a flexible bellows 4, and a drying filter 19 for collecting lint as lint provided on the upper end of the water-cooled dehumidifying duct 5 and the front surface of the washing dryer. Are connected substantially horizontally, and the outlet of the drying filter 19 and the inlet of the fan 61 are connected and further connected to the heater 62. The outlet of the heater 62 and the blowout nozzle 11 are connected to the outer tub 20 substantially vertically with respect to the outer tub 20 by a bellows 7 having a flexible structure between the uppermost surface and the center of the outer tub 20 and in front of the center of the outer tub 20. The vibration of the tank 20 is absorbed. 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. Then, in the middle stage from the first half of the drying process, the rotary drum 29 is rotated while the drain valve 8 is opened, and the fan 61 is operated to suck out the air in the outer tub 20 from the air vent 32 and pass through the water-cooled dehumidifying duct 5. After passing and dehumidifying with water cooling, the air is heated by the heater 62 to generate circulating air 12 that is blown from the blow nozzle 11 toward the laundry 30 in the rotary drum 29. The dehumidification of the circulating air 12 that has taken moisture from the laundry 30 in the rotary drum 29 is performed by opening the cooling water valve (not shown) and flowing out from the cooling water supply pipe 51 to the wall surface in the water-cooled dehumidifying duct 5. 52 is caused to flow down and contact with the circulating air 12. The cooling water 52 that has flowed to the wall surface in the water-cooled dehumidifying duct 5 passes through the drain port 37 and is discharged by the drain hose 9.

  In the latter half of the drying process, the heater 62 is turned off to stop the cooling water 52 as shown in FIG. 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 exhaust heat from the outer tub 20, the drum driving motor 36, and the fan 61 while flowing through the side surface of the outer tub 20. In the middle of drying, the air is sucked into the fan 61 together with the high-temperature housing internal air 15 accumulated in the upper surface of the outer tub 20 and the space of the housing 2. The sucked interior air 15 is blown onto the laundry 30 to remove 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 discharges to the drain port 39. Is done. 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 outlet 39, it is necessary to ensure a high pressure (pressure higher than a predetermined pressure) even after the water seal is broken. 61 is controlled.

  After the drying, as shown in FIG. 4, the cooling water 52 is flowed by lowering 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.

  Next, the configuration of the drying means 6 and the configuration and operation of the intake valve 13 will be described with reference to FIGS.

  FIG. 5 is a perspective view more specifically showing the configuration of the drying means 6 of the washing / drying machine according to the first embodiment of the present invention. The outer tub 20 is generally directed from the back side to the front side in FIG. And the rotary drum 29 are shown through.

  6 and 7 are cross-sectional views taken along the line AA of FIG. 1. FIG. 6 shows a state in which an intake valve 13 to be described later closes the intake port 42, and FIG. 7 shows a state in which the intake valve 13 opens the intake port 42. ing. 8 is a cross-sectional view taken along the line BB in FIG.

  The configuration of the drying means 6 will be described with reference to FIGS. 5 to 8 and FIG. 1 as appropriate.

  The drying means 6 in the present invention includes a water-cooled dehumidifying duct 5, a drying filter 19, a communication path 25, a fan 61, a heater 62, a blowout nozzle 11, and a connection air path 24. Moist air containing moisture from the laundry 30 inside the rotating drum 29 is discharged in the direction of the arrow 43a from the ventilation port 32 provided at the lower back of the outer tub 20, and from substantially downward to upward along the back of the outer tub 20, for example A water-cooled dehumidifying duct 5 including a dehumidifying means such as a heat exchanger for dehumidifying the moisture in the humid air by condensing the moisture in the cooling air by cooling the humid air is provided. The outer tub 20 and the water-cooled dehumidifying duct 5 are connected by a bellows 4 that can be expanded and contracted. On the upper surface of the outer tub 20, the water-cooled dehumidification duct 5 is connected to the connection air passage 24 through the bent portion 35, and the connection air passage 24 extends toward the front surface substantially along the rotation axis of the rotary drum 29. Is blown in the direction of arrow 43b. The connection air path 24 is connected to the drying filter 19, and lint, which is fiber waste contained in the air, is collected by the drying filter 19. In this embodiment, the drying filter 19 is provided so as to be removable from the front side of the washing / drying machine body, and the user can remove the drying filter 19 and clean the collected lint. Details of the configuration of the drying filter 19 are omitted.

  The air in which the lint has been collected in the drying filter 19 is provided with a gap between the housing 2 adjacent to the drying filter 19 and connected to the fan 61 in the direction of the arrows 43c and 43d. As described above, the air is introduced into the opening 61 a at the center of rotation of the rotary blade 26 provided inside the fan 61.

  The fan 61 is a so-called centrifugal sirocco fan or turbo fan, and the rotary blades 26 are rotated by a fan drive motor 28 to accelerate air by centrifugal force. The fan drive motor 26 is disposed so as to protrude from the fan 61 toward the outer tub 20.

  The shape of the fan 61 will be described. The rotating blade 26 has a substantially disk shape, and the main body of the fan 61 has a substantially cylindrical shape in which a radius gradually increases around the rotating blade 26. The air blown out from the fan is directed toward the fan exhaust port. An opening 61a through which air flows is provided at the rotation center of the rotary blade 26 on one surface of the fan 61, and the fan drive motor 28 having a diameter smaller than the outer diameter of the fan 61 main body is provided on the opposite side of the opening 61a. However, it is concentric with the main body of the fan 61, that is, the rotary blade 26, and protrudes in the direction approaching the outer tank 20.

  The accelerated air is heated and dried as it passes through the heater 62 and is blown into the rotary drum 29 from the blow nozzle 11 through the bellows 7 in the directions indicated by the arrows 43e and 43f. The warm air blown into the rotary drum 29 heats the laundry 30 to evaporate the moisture to become humid air, and is sucked out of the outer tub 20 through the vent 32 and dehumidified again through the water-cooled dehumidifying duct 5. The

  Next, the configuration of the intake valve 13 will be described. As shown in FIGS. 5 to 8, an air inlet 42 is provided on a surface that is a part of the connection air passage 24 on the upstream side of the fan 61 and is close to the outer tub 20. The intake valve 13 is provided to open and close the intake port 42 from the inside of the connection air passage 24. A flexible rubber seal member (not shown) that is slightly larger than the intake port 42 is provided around the intake valve 13 so that the opening can be sealed. The intake valve 13 is connected to a stepping motor 58 by a crank 33 and an arm 34, and is configured to open and close by rotation of the motor.

  FIG. 6 shows a state in which the intake valve 13 closes the intake port 42 and air flows through the connection air passage 24, which is the middle stage of the drying process shown in FIG. FIG. 7 shows that the intake valve 13 opens the intake port 42 and closes the connection air passage 24 from the inside so that the outer tank 20 and the inner air 15 stored in the upper surface of the outer tank 20 and the space of the casing 2. 15 'shows the state which flows in from the inlet port 42, and is the state after the end of drying from the latter half of the drying process shown in FIGS. That is, when the air inlet 42 is closed and the air duct is opened, the same air in the washing tub is circulated, while the air inlet 42 is opened and the air duct upstream of the air inlet 42 is closed. In this case, new air is always sucked from the inside of the housing 2 through the air inlet 42, blown in the order of the fan 61, the heater 62, and the outer tub 20 and exhausted from the drain hose 9. Here, since the air inside the housing 2 is hotter than the outside air due to heat generated by the motor or the like, the high-temperature air is sucked from the air inlet 42 and blown onto the laundry, thereby efficiently promoting drying. In addition, power consumption can be reduced without exhausting humid air indoors.

  Next, the arrangement of the drying air path will be described.

  Contrary to the present invention, the opening 61 a of the fan 61 is disposed close to the outer tub 20, and the fan drive motor 28 is located on the opposite side of the fan 61 from the outer tub 20, that is, on the housing 2 side. In the case of being arranged facing (for example, Patent Document 2), the air after passing through the drying filter 19 once bends toward the outer tub 20 side, and then flows backward toward the opening 61a, so that the air is bent. Increase in pressure loss.

  In the present invention, the fan drive motor 28 is disposed close to the outer tub 20, and the opening 61 a of the fan 61 is located on the side opposite to the outer tub 20, that is, the housing 2 side with respect to the substantially disc-shaped fan body. Therefore, the air that has passed through the drying filter 19 flows backward along the housing 2 as indicated by an arrow 43d and flows into the opening 61a.

  That is, since the warm air that has passed through the drying filter 19 is introduced toward the inlet of the fan 61 without being bent toward the outer tub 20, the pressure loss can be reduced and the fan driving motor 28 has a low blowing resistance. It is possible to further save energy by reducing the electric power for driving.

  Next, a preferred positional relationship between the fan drive motor 28 and the intake valve 13 will be described.

  Here, as described above, the external air 16 passes through the inside of the housing 2 and flows while passing through the side surface of the outer tub 20, and warms while receiving the exhaust heat from the outer tub 20, the drum driving motor 36, and the fan 61. And collected in the upper part of the housing 2. In order to increase the energy saving effect by using heat without waste, it is desirable to suck the warm air accumulated in the upper part of the housing 2 from the air inlet 42 without escaping to the outside as much as possible and blow it again on the laundry 30. For this purpose, it is effective to dispose the heat source in the vicinity of the air inlet 42, the air inlet 42 is opened on the side of the lower surface of the connection air passage 24 facing the outer tub 20, and the fan drive motor 28 is connected to the fan 61. It arrange | positions in the outer tank 20 side rather than the main body of this, and arrange | positions in the vicinity of the inlet port 42. FIG. By arranging in this way, the heat radiated from the fan drive motor 28 is likely to go into the space between the fan 61 main body and the outer tub 20, and the heat generated from the outer tub 20 and the fan drive motor 28 is released to the outside. Therefore, the heat stored in the housing 2 is sucked without waste, and the thermal efficiency of the drying process is remarkably improved.

  Further, if the fan drive motor 28 and the air inlet 42 are provided at a position where the air flowing as indicated by an arrow 43g along the outer shell of the fan drive motor 28, which is a heat source, directly flows into the air inlet 42, heat can be generated. It is more effective as a configuration that does not miss.

  Next, a configuration for preventing overheating of the fan drive motor 28 will be described.

  As shown in FIG. 2, the drying operation is performed with the air inlet 42 closed until the middle of the drying process. As described above, the fan drive motor 28 is arranged toward the outer tub 20 so as to prevent heat from escaping to the outside. Therefore, the temperature of the fan drive motor 28 is likely to rise. When the outside air temperature is high or when the drying operation is continuously performed, the temperature of the fan drive motor 28 may exceed the upper limit and overheat. In order to prevent this, when the temperature of the fan drive motor 28 is detected and exceeds a predetermined measurement value, the fan 42 is opened to suck the ambient high-temperature air and introduce the external air 16. The air temperature around the drive motor 28 can be lowered to cool the surface.

  The temperature of the fan drive motor 28 is detected by, for example, a thermistor (not shown) provided in contact with the surface of the fan drive motor 28 or a thermistor (not shown) provided in the vicinity of the fan drive motor 28 to measure the air temperature. The fan motor temperature detection sensor.

  Alternatively, when the intake air temperature or the discharge temperature of the fan 61 exceeds a predetermined temperature by the temperature sensors provided at the intake port and the discharge port of the fan 61, the intake port 42 is opened and the surrounding high-temperature air is sucked to the outside. The structure which cools the surface of the fan drive motor 28 by introduce | transducing the air 16 may be sufficient.

  FIG. 9 is a block diagram of the control device 138 of the washing / drying machine. Reference numeral 150 denotes a microcomputer, which is connected to an operation button input circuit 151, a water level sensor 134, a temperature sensor 152, and a fan motor temperature detection sensor 153 connected to each switch (not shown). Receive various information signals. 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 drum drive motor 36, a fan 61, a heater 62, an intake valve 13, a cooling water valve, and the like. Controls opening and closing, rotation, and energization. Further, it is connected to a display 114 such as a 7-segment light emitting diode, a light emitting diode 156, and a buzzer 157 for informing 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 an operation button switch (not shown). When no instruction is input, the standard washing / drying course or the previous washing / drying course is automatically set.

Step S103
The process branches after monitoring an instruction input from a start switch (not shown) on 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, hot air dehydration is performed. In the hot air dehydration, the fan 61 is operated at a low speed, the heater 62 is energized, and hot air is blown into the rotary drum 29 to raise the temperature of the clothes. At the same time, the rotating drum 29 is rotated at high speed to effectively dehydrate moisture from the warmed clothes (the viscosity of the water decreases as the temperature rises, so that it can be efficiently dehydrated). In the present embodiment, the rotation speed of the fan 61 is set to about 11000 rotations per minute. This is to prevent the allowable current value (15 A) from being exceeded.

Step S108
Perform a drying operation. The fan 61 is rotated at a low speed, the heater 62 is energized, the forward and reverse rotation of the rotating drum 29 is repeated, and hot warm air is blown on the clothes while changing the position of the clothes in the rotating drum 29. The temperature of the entire clothing rises and moisture evaporates from the clothing.

Step S109
The process branches after confirming whether the elapsed time from the start of drying has reached the specified time.

Step S110
The cooling water valve is opened and the cooling water 52 is poured to perform water cooling dehumidification.

Step S111
The intermediate temperature between the drainage port 37 and the fan intake port at the lower part of the outer tub 20 and the temperature of the fan drive motor 28 are measured.

Step S122
The process branches after confirming whether the temperature of the fan drive motor 28 exceeds the specified temperature.

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- The heater 62 is turned off, the intake valve 13 is opened, the cooling water valve is closed, the fan 61 is rotated at a high speed, and the moisture of the laundry 30 is discharged from the drain hose 9 to the drain port 39.

  Alternatively, if the temperature of the fan drive motor exceeds a specified temperature, it is determined that the fan drive motor has overheated, the heater 62 is turned off, the intake valve 13 is opened, the cooling water valve is closed, and the fan 61 is operated at high speed. It rotates to drain the moisture of the laundry 30 from the drain hose 9 to the drain port 39.

  Here, in order to open the intake valve 13, a predetermined amount of operation pulses may be applied to a motor, for example, the stepping motor 58. As the predetermined amount of operation pulse, in addition to the operation amount in the range from fully closed to fully open shown in FIGS. 6 to 7, the packing provided on the outer periphery of the intake valve 13 is more surely pressed at the fully opened position. It is desirable to apply extra operating pulses.

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 judged that the drying is finished, and the rotation speed of the fan 61 is lowered to a pressure level that does not break the water seal while keeping the pressure on the drainage hose 9 side higher than the pressure on the drainage port 39 side, and the cooling water valve is opened. 52 is flowed to recover the water seal of the drain trap 10.

Step S119
The process branches after confirming whether the elapsed time after opening the cooling water valve 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 was opened, or when the pressure of the water level sensor 134 is greater than the specified pressure, it is determined that the water sealing of the drain trap 10 has been recovered, the fan 61 is stopped, and the drum The drive motor 36 is stopped, the intake valve 13 is closed, the cooling water valve is closed, and the drying process is completed.

  Here, in order to close the intake valve 13, a predetermined amount of operation pulses may be applied to the stepping motor 58. As the predetermined amount of operation pulse, in addition to the operation amount from fully open to fully closed in the range shown in FIG. 7 to FIG. 6, the operation pulse until the packing around the intake valve 13 is further pressed in the fully closed position. It is desirable to apply extra.

  The washing / drying machine configured as described above has the laundry 30, the rotary drum 29, the fan drive motor 28, the outer tub 20, the upper surface of the outer tub 20, and the interior of the housing stored in the space of the housing 2 until the middle of the drying process. By the residual heat drying using the heat stored in the air 15 and the like and the 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 600 W, air volume of about 1.5 m ³ / min, and cooling water volume of 0.3 to 0.5 L / min, the residual heat drying in which the heater is turned off and the external air is blown in the second half of drying About 10 to 20% of the entire power consumption in the drying process can be reduced as compared with the case where no residual heat drying is performed.

  Further, when the housing internal air 15 sucked into the fan 61 is heated by exhaust heat from the outer tub 20, the drum driving motor 36, the fan 61, etc., the drying process is compared with the case where the external air 16 is directly sucked. About 5% of the total power consumption 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.

  In the first embodiment of the present invention, the cooling water valve is opened in the middle of the drying process to perform water cooling and dehumidification. However, the cooling water valve is opened only in the latter half of the drying process, or the cooling water is supplied to the drying process. When not in use, the temperature of the circulating air 12 rises and the temperature of the laundry 30 rises, so that the heat capacity used at the time of residual heat drying increases and the power consumption of the drying process can be further reduced. In addition, when not using cooling water, inner wall surfaces, such as the water cooling dehumidification duct 5 and the outer tank 20, become a dehumidification part by air cooling.

  In the present invention, the intake valve 13 is provided on the lower surface of the connection air passage 24 and on the side facing the outer tub 20. However, the present invention is not limited to such an arrangement. You may provide in the wall surface of the dehumidification duct 5, or you may provide along the flow path of the circulating air 12 between the bending part 35 and the fan 61. FIG.

  According to the present invention, since the fan drive motor 28 is located on the outer tub 20 side and the rotary blade 26 is located on the non-outer tub 20 side, the blowing resistance of the air passage for blowing warm air into the rotating drum 29 is reduced. In addition, heat generated by the fan drive motor 28 is difficult to escape to the outside. Further, since the fan drive motor 28 is arranged closer to the air inlet 42 provided on the outer tub 20 side of the air passage than the rotary blade 26, the air heated during the drying operation is efficiently used. There is an effect that the power consumption can be further reduced by inhaling from the air inlet 42.

  Furthermore, according to the present invention, the warm air in the housing 2 is sucked from the air inlet 42 during the drying operation, and all or part of the air that has come out of the rotating drum 29 is discarded from the drain hose 9 to the water outlet. Since drying operation is possible without exhausting high-humidity air indoors, there is an effect that power consumption can be reduced without deteriorating the indoor environment.

  Further, according to the present invention, the temperature detection sensor detects that the fan drive motor 28 has exceeded a predetermined temperature, opens the air inlet 42 and sucks the air around the fan drive motor 28, thereby Since the surface can be cooled, the reliability of the motor can be improved by preventing overheating of the motor.

DESCRIPTION OF SYMBOLS 1 Base 2 Case 3 Door 4, 7 Bellows 5 Water cooling dehumidification duct 6 Drying means 8 Drain valve 9 Drain hose 10 Drain trap 11 Blowing nozzle 12 Circulating air 13 Intake valve 14, 15 Housing internal air 16 External air 19 Drying filter 20 Outer tub 21 Suspension 22 Front cover 23 Back cover 24 Connection air passage 28 Fan drive motor 29 Rotating drum 30 Laundry 31 Fluid balancer 32 Ventilation port 35 Bending portion 36 Drum drive motor 37 Drain port 38 Packing 42 Inlet port 51 Cooling water supply Pipe 52 Cooling water 53 Valve body 61 Fan 62 Heater

Claims (6)

An outer tank whose inside becomes a drying chamber when drying;
An inner tub that is rotatably arranged in the outer tub and accommodates laundry;
A motor that drives the inner tank;
A housing that supports the inner tank;
An air passage for blowing warm air into the inner tank;
A filter that collects lint,
In a dryer provided with a fan having a rotating blade and a fan motor for driving the rotating blade,
The dryer, wherein the fan is disposed so that the fan motor is located on the outer tub side and the rotary blade is located on the non-outer tub side. An outer tank whose inside becomes a drying chamber when drying;
An inner tub that is rotatably arranged in the outer tub and accommodates laundry;
A motor that drives the inner tank;
A housing that supports the inner tank;
An air passage for blowing warm air into the inner tank;
A filter that is detachable and collects lint;
In a dryer equipped with a fan into which hot air from this filter is introduced,
The fan has a rotating blade and a fan motor that drives the rotating blade,
The fan is arranged so that the fan motor is located on the outer tub side and the rotary blade is located on the anti-outer tub side,
A dryer characterized in that an air inlet is provided on the outer tub side of the air passage. An outer tank whose inside becomes a drying chamber when drying;
An inner tub that is rotatably arranged in the outer tub and accommodates laundry;
A motor that drives the inner tank;
A housing that supports the inner tank;
An air passage for blowing warm air into the inner tank;
A filter that collects lint,
In a dryer provided with a fan having a rotating blade and a fan motor for driving the rotating blade,
An air inlet is provided in the air passage,
The dryer, wherein the fan is disposed so that the fan motor is closer to the intake port than the rotary blade.   The fan according to any one of claims 1 to 3, wherein the fan has a shape in which a small-diameter fan motor projects concentrically with respect to the large-diameter fan body, and an air inlet is provided on a surface opposite to the fan motor. A dryer characterized in that the fan motor is disposed so as to be substantially opposed to a circumferential surface of the outer tub.   4. The dryer according to claim 2, wherein a temperature sensor is provided in the vicinity of the fan motor, and the intake port is opened when the temperature sensor exceeds a predetermined measurement value.   The first position where the air inlet is closed and the air passage is opened, and the second position where the air inlet is opened and the air passage upstream of the intake valve is closed. A dryer having an intake valve that moves between and a drainage hose that exhausts all or part of the air discharged from the inner tank during a drying operation.