JP2014135954A - Washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing and drying machine with reduced power consumption in drying operation by effectively heat-insulating an outer tub.SOLUTION: A washing and drying machine includes: an outer tub, whose inside becomes a drying chamber when drying; an inner tub rotatably disposed in the outer tub and for housing laundry; a motor for driving the inner tub; a housing supporting the outer tub and forming an exterior; a blowing channel for introducing warm air to the inner tub; blowing means for blowing air to clothes; and a drain hose for discharging water to the outside of the machine. 70% or more of the whole length of a water passage for supplying warm water is disposed so as to be housed in a space in the housing from the center height of the outer tub to a bottom of the washing and drying machine.

Description

  The present invention relates to a washing and drying machine 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). . In any case, drying in the washing and drying machine is basically performed by heating the clothes with warm air and using most or a part of the heat to evaporate moisture from the clothes. In order to reduce power consumption during drying, reducing heat input of warm air is one effective measure.

  JP, 2009-240547, A (patent documents 1) is background art of the technical field about dry power consumption reduction using external warm water. This publication has a waste heat recovery and drying operation that includes a compression means and a bath pump, operates the compression means and the bath pump, absorbs heat from the remaining hot water with a second heat absorber, and dissipates heat to the circulating air with a radiator. By doing so, the pressure drop on the low pressure side of the heat pump cycle is prevented, the evaporation temperature is kept at 0 ° C. or higher, and frost formation in the first heat absorber that absorbs heat from the circulating air is prevented. ”

JP 2009-240547 A

  However, as in Patent Document 1, in the exhaust heat recovery drying operation that absorbs heat from the remaining hot water in a clothes dryer equipped with a heat pump and dissipates heat to the circulating air with a radiator, it remains in heat exchange with the cooling medium of the heat pump cycle. It is assumed that hot water is used, heat exchange with the atmosphere in the housing itself is not intended, and it is difficult to effectively keep the outer tub warm.

  The objective of this invention is providing the washing-drying machine which reduced the power consumption at the time of drying operation by heat-retaining an outer tank effectively.

  An outer tub that becomes a drying chamber when drying, an inner tub that is rotatably arranged in the outer tub to store laundry, a motor that drives the inner tub, and a housing that supports the outer tub and forms an exterior In a washing / drying machine comprising a body, an air passage for guiding warm air to the inner tub, an air blowing means for blowing air on clothes, and a drain hose for discharging water to the outside of the machine, It arrange | positions so that 70% or more of full length may be settled in the space in the said housing | casing from the center height of the said outer tub to the bottom part of a washing-drying machine.

  ADVANTAGE OF THE INVENTION According to this invention, the washing-drying machine which reduced the power consumption at the time of drying operation can be provided by heat-retaining an outer tank effectively.

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 at the time of circulation of the first half of the drying process according to the first embodiment of the present invention is shown. FIG. 3 is a perspective view showing an internal structure according to the first embodiment of the present invention, partly cut from the back side of the washing / drying machine. Sectional drawing of the washing-drying machine at the time of the ventilation exhaust_gas | exhaustion of the latter half of a drying process which concerns on 1st Example of this invention is shown. The operation pattern of 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 operating rate of the circulation pump and the power consumption reduction rate. 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 according to the first embodiment of the present invention is shown. FIG. 6 is a perspective view showing an internal structure according to a second embodiment of the present invention, partly cut from the back side of the washing / drying machine. FIG. 7 is a perspective view showing an internal structure according to a third embodiment of the present invention, partly cut from the back side of the washing / drying machine. It is a perspective view which shows the internal structure by cutting partially from the back side of the washing and drying machine according to a modification of the fourth embodiment of the present invention. Sectional drawing of the washing-drying machine which concerns on the 5th Example of this invention at the time of the exhaust_gas | exhaustion of the latter half of a drying process is shown.

  Hereinafter, examples will be described 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 the first embodiment of the present invention, and air that has been pressurized by the fan 49 is blown to the rotating drum 29 to evaporate moisture from the laundry 30 that is the object to be dried. A sectional view of the washing and drying machine at the time of the circulation drying process in which heat is exchanged with the outer tub 20 and the air duct 40 while the air passes through the outer tub 20 and the air duct 40 to condense and dehumidify a part of the steam. Show. FIG. 3 is a perspective view seen from the back of the washing / drying machine, and schematically shows the inside with a part of the back panel taken as a cross section. A water flow hose 53 as a water flow means for flowing warm water from the outside such as bath remaining hot water is mainly disposed in a housing space below the outer tub 20. The washing and drying machine of the present embodiment is provided with a water supply electromagnetic valve that switches a water supply port and a water supply path (not shown) at the top of the housing in accordance with the height of the water supply faucet provided for a washing machine in a general house. Yes. A drying fan 49 and a drying filter (not shown) are also provided at the top of the housing to prevent intrusion of washing water. For this reason, the upper part of the enclosure surrounded by the outer frame 2 has relatively dense components, and the lower part has a space in the space. In this embodiment, the water hose 53 is provided in the lower part of the casing surrounded by the outer frame 2. By adopting such a configuration, the enclosure air heated by receiving heat from the water flow hose 53 is accumulated in the upper part of the enclosure by natural convection. In the latter half of the drying process, which will be described later, this air is led from the intake valve 13 into the blower duct 40, sucked into the fan 49, pressurized, blown into the rotary drum 29, and effectively used for drying. In this embodiment, in order to improve heat exchange between the air inside the housing and the water flow hose 53, the pitch of the water flow hose 53 in the height direction of the washing / drying machine is used in order to smoothly move the air to the upper part by the natural convection. The pitch P1 in the horizontal direction is set larger than P2. Further, as described above, the weight balance imbalance due to the density difference in the arrangement of the components in the height direction can be compensated by providing the water flow hose 53 at the lower portion, and vibration during operation and noise accompanying the operation can be reduced. . In this embodiment, the running length from the height of the hot water pump 54 to the lower part of the rotating drum 29 is about 1.5 to 2.0 m, and the arrangement length of the water hose 53 at the lower part of the rotating drum 29 is about 5 m. In this case, the effective heat exchange length is worth about 70% of the total length. The water flow hose 53 is connected to the bath water pump 54 at a outlet of the bath water pump 54 provided in the upper part of the washing / drying machine and branched from a path for flowing into the detergent case (not shown). That is, in this embodiment, the hot water supply to the water flow hose 53 is shared by the bath water pump 54 used in the hot water removal operation using the remaining hot water in the washing and rinsing process.

  First, the schematic structure of the washing / drying machine and the washing / dehydrating process 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 overflow hose 17 is attached to the blower duct 40 on the rear surface of the drum, and is joined with the hose from the drainage port 37 before the drainage valve 8. That is, when the drain valve 8 is opened, the drain hose 9 is communicated.

  The drying device 6 including the air duct 40 that guides air flow to the laundry 30 in the rotating drum 29, the fan 49 that is the air blowing means, and the heater 50 is fixed to the outer frame 2 apart from the outer tub 20 (not shown). . The outlet of the heater 50 and the blowout nozzle 11 are connected to the outer tub 20 approximately perpendicularly to the outer tub 20 by a flexible bellows 7 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 suction port and the discharge port of the drain hole 37 and the fan 49.

  The drum type washing and drying machine configured as described above rotates in the washing process by putting the laundry 30 into the rotary drum 29, supplying water with the drain valve 8 closed, and storing the washing water in the outer tub 20. The drum 29 is rotated to wash the laundry 30. In the case of a drum-type washing / drying machine, as the drum rotates, the laundry 30 lifts the laundry 30 to the top of the drum by the lifter 33, and then drops onto the bottom of the drum by gravity. Since the overflow hose 17 is connected to the air duct 40, the washing water may flow to the position of the overflow hose 17 in the air duct 40 in some cases. Moreover, in order to wash away the lint in the air duct 40 during the washing process, water may be poured into the air duct 40 from a water injection tool (not shown) provided on the air duct 40. Since the bellows hose 52 and the outer tub side mounting portion 53 that connect the rear surface of the outer tub 20 and the bottom of the air duct 40 are inclined downward from the air duct 40 toward the rear surface of the outer tub, At the end, the water is quickly drained from the outer tub 20 through the drain port. If the hot water removal mode in which the remaining bath water is used as washing water is selected for the process including washing and rinsing, tap water is not passed except for priming water, and the bath water pump 54 is driven. The bath water is pumped up by a hot water hose (not shown) and supplied to the outer tub 20. Further, if the power saving mode using the remaining hot water is selected, the remaining bath hot water branched at the outlet of the bath water pump 54 is led to the water hose 53. At this time, the thermistor (not shown) provided in the drain hole 37 of the outer tub 20 or the thermistor (not shown) provided in the bath water pump 54 suction port monitors the temperature in the enclosure atmosphere (see FIG. (Not shown) If the temperature is high, the branch supply to the water flow hose 53 is stopped. In addition, if the switching timing is known in advance with respect to the remaining hot water temperature range, the water flow switching by comparing the temperatures may be forcibly switched by the elapsed time of washing and drying.

  In the dehydration step, the drain valve 8 is opened to drain the washing water in the outer tub 20, and then the rotary drum 29 is rotated to perform centrifugal dehydration. Even if part of the dehydrated water is wound up to the air duct 40 side, the bellows hose 52 and the outer tank side mounting portion 53 that connect the rear surface of the outer tank 20 and the bottom of the air duct 40 are connected from the air duct 40 to the outer tank 20. Since it is inclined downward toward the back surface, it can be quickly returned to the outer tub side. When the rotational speed of the rotating drum 29 is increased by increasing the dehydration rotational speed, vibration is transmitted to the outer tub 20 and the outer tub 20 itself vibrates slightly. Since the air duct 40 is fixed to the housing, the bellows hose 52 that connects the back surface of the outer tub 20 and the bottom of the air duct 40 is interlocked to absorb part of the vibration.

  In the first half of the drying process, as shown in FIG. 2, the air that has been heated by the fan 49 is blown into the rotary drum 29 through the blowing nozzle 11 to exchange heat with the laundry 30 and to remove moisture from the laundry 30. Evaporate. The air containing the evaporated water and having become highly humid is led to the fan suction port through the blower duct 40, and after the pressure is increased again, the air is blown into the rotary drum 29. The intake valve 13 forms a part of the wall surface of the air duct 40 and is in a fully closed state in which the inside and the outside of the air duct 40 are isolated. In this embodiment, since the pressure increase by the fan 49 is about 6000 Pa, if the compression process is adiabatic compression, the temperature increase is about 5 ° C. In addition, air is also warmed by heat transfer from the fan motor 51 that drives the fan 49 during this compression through a shaft (not shown), and the temperature rises by about 9 ° C. in total. When the humid air at the outlet of the rotary drum 29 passes through the outer tub 20 and the air duct 40, the outer tub 20 and the air duct 40 also exchange heat with each other, so that moisture corresponding to a decrease in the saturated vapor pressure is removed from the outer tub. 20 and the wall surface of the air duct 40 are condensed. Moisture condensed in the air duct eventually accumulates in the bellows hose 52 from the bottom of the duct, but since it is inclined downward from the air duct 40 toward the back of the outer tank 20, the condensed water also passes through the outer tank 20. It can be transferred to the vicinity of the drain outlet.

  When hot water removal operation is selected in the washing process, the temperature of the clothes and the outer tub at the start of drying is higher than that before the operation, so that the heating input up to that temperature can be reduced. Furthermore, if the power saving mode using remaining hot water is selected, the space in the housing is kept at a higher temperature than the outside air, so that the temperature of the outer tub can be kept high and is circulated between the outer tub 20 and the fan 49. The air temperature level can be kept high. Thereby, the input to the heater 50 can be suppressed, and the saturation temperature of the circulating air can be raised, so that evaporation from the clothes can be promoted.

  In the latter half of the drying process, the intake valve 13 and the drain valve 8 are opened. FIG. 3 shows the air flow in the washing and drying machine in the latter half of the drying process. By opening the intake valve 13 on the suction side of the fan 49, the air in the housing outside the blower duct 40 is sucked and blown into the rotary drum 29. In this figure, the intake valve 13 is open so that the intake valve 13 is folded inside the air duct 40 so that the air passage in the air duct 40 is completely blocked (ignoring the leakage level). Fully open). Accordingly, all the air pushed out from the rotating drum 29 (ignoring the amount of leakage) passes through the drainage hose 9 via the drainage port 37 or the overflow hose 17, breaks the water seal of the drainage trap 10 and is discharged to the drainage hole 39. .

  In the case of a general drain trap, the water seal height is about 50 to 80 mm. Therefore, at the beginning of this process, the intake valve is fully opened, the pressure in the drum is increased, and the water seal is broken. In order to break the water seal, the pressure on the drainage hose 9 side needs to be about 1000 Pa or more. Also, as drying progresses, condensed water is generated and collected in the drain trap. For this reason, the operation | movement which breaks the said water seal is performed at fixed intervals.

  The exhaust from the rotary drum 29 is exhausted through the connection hose from the drain port 37 to the drain valve 8 and the overflow hose 17. On the other hand, since the intake air led mainly into the housing from the bottom of the housing passes through the periphery of the rotary drum driving motor 36 and the fan motor 51 between the intake port 18 at the top of the housing and becomes high temperature. Then, the air is taken into the air passage from the intake valve 13. For this reason, normally, the heater 50 provided at the outlet of the fan 49 does not need to be energized. An exhaust path for exhausting from the drain valve through the overflow hose 17 from the rotating drum 29 includes an outer tank side mounting portion 53 and a bellows hose 52 on the rear surface of the outer tank 20. Therefore, the inflow angle of the exhaust gas into the air blowing duct 40 becomes an obtuse angle larger than 90 degrees, and the air path loss in the exhaust path can be reduced. If the power saving mode by using the remaining hot water is selected, the temperature of the air taken into the air duct 40 from the intake valve 13 can be increased, and the decrease in the heat exchange amount to the clothing 30 can be suppressed. Thereby, it can dry in a time shorter than a normal washing-drying operation. In addition, when the atmospheric temperature in a housing | casing falls with progress of drying operation time, it is preferable to drive the bath water pump 54 and to let remaining hot water flow, and to heat-retain the inside of a housing | casing again.

  FIG. 5 schematically shows the change over time in the atmospheric temperature in the housing during the washing and drying operation in the power saving mode using the remaining hot water, and the state in which water flow to the water hose 53 by the bath water pump 54 is stopped. . At the start of operation, if the atmosphere in the housing is at the same temperature level as the outside air and the remaining hot water temperature is higher than that, the water is passed through the water hose 53 from the start of the washing operation. Thereafter, the ambient temperature in the housing gradually rises due to heat radiation from the water hose 53 in addition to waste heat from the drum drive motor 36 and frictional heat from intermediate dehydration. At the time of dehydration, drum driving power required for high-speed rotation of the rotating drum 29 increases, so that the heat radiation amount increases and the ambient temperature rise rate increases. When the atmospheric temperature in the housing reaches the remaining hot water temperature level, water flow to the water hose 53 is stopped. At the time of subsequent drying, the atmospheric temperature in the housing continues to rise during the heating period by the heater 50. However, in the intake / exhaust operation with the intake valve 13 opened in the latter half, the atmospheric atmosphere in the housing enters the air duct 40 from the intake valve 13. Since it is introduced, ambient outside air is introduced into the housing, and the temperature decreases. If the ambient temperature in the housing is lower than the remaining hot water temperature, the bath water pump 54 is driven again and water is passed through the water hose 53. Thereby, the atmospheric temperature in the housing can be recovered to a temperature between the remaining hot water temperature and the outside air, and the intake air temperature from the intake valve 13 into the air duct 40 can be raised. Further, as described above, when the flow timing with respect to the temperature of the remaining hot water is clear to some extent, the water flow time is simply the elapsed time of the washing and drying operation, and the bath water pump 54 for water flow to the water flow hose 53 is used. There is no problem even if the start and stop are repeated.

  FIG. 6 shows an outline result when the power saving mode operation is performed by using the remaining hot water when the load is 6 kg, the remaining hot water temperature is 30 ° C., and the outside air is 20 ° C. The water flow rate on the horizontal axis indicates the rate of water flow time out of the drying time. Water flow is 0.5 L / min, and the stop timing is the temperature difference between the surface of the water flow hose 53 and the remaining hot water. The time when the temperature reached about -1 ° C was used. That is, the operation with a large water flow time ratio is a result of water flow again when the surface temperature of the water flow hose 53 does not decrease so much, and shows a result of a short interval between operation and stop. On the other hand, a result with a small water passage time ratio indicates an operation result with a long interval. In addition, the water flow time ratio 0 indicates an operation result of removing hot water from washing to rinsing, and represents the dry power consumption at this time as a reference. As can be seen from this figure, it can be confirmed that the power saving ratio can be increased as the water flow time ratio increases.

  FIG. 7 is a block diagram of the control device 41 of the washing / drying machine. Reference numeral 26 denotes a microcontroller which is connected to the operation button input circuit 25, the water level sensor 44, and the temperature sensor 45 connected to the switches 24, 24a and 24b, and various information signals in the user's button operation, washing process and drying process. Receive. The output from the microcontroller 26 is connected to the drive circuit 5 and is connected to the water supply electromagnetic valve 28, the drain valve 8, the motor 26, the fan 49, and the heater 62 which is the heating means of this embodiment (not used in the operation of this embodiment). ), Connected to the intake valve 13 and the like, and controls the opening / closing, rotation, and energization thereof. Further, it is connected to a 7-segment light emitting diode display 7, a light emitting diode 15, and a buzzer 19 for notifying the user of the operating state of the washing machine. The microcomputer 26 is activated when the power switch 47 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 7 of the operation panel 48 is turned on, and a washing / drying course is set according to an instruction input from the operation button switch 24b. 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 24a, a high finishing course for drying is set. Here, selection is made by selecting the hot water removal operation using the remaining hot water of the bath as the washing water and whether to adopt the power saving course using the remaining hot water in the case of the washing and drying operation.

Step S103
The process branches after monitoring the instruction input from the start switch 24 of the operation panel 48.

Step S104
The process branches after determining whether hot water removal operation is set.

Step S105
Drive bath water pump.

Step S106
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 S107
The processing branches after determining whether or not the power saving cause is set.

Step S108
The hot water temperature is compared with the atmosphere monitoring temperature in the housing, and the process is branched.

Step S109
Branch off part of the hot water sent from the bath water pump to the detergent case, and pass it to the water hose.
Step S110
The process branches after confirming whether or not the specified time determined by the load and the finishing course has elapsed.

Step S111
The process branches after confirming whether the monitoring time of the hot water temperature and the ambient temperature in the housing has elapsed.

  Here, the operation from step S108 to step S111 is named routine R101 for the sake of explanation.

Step S112
The process branches after confirming whether the washing / drying course is set. When only the washing course is set, the driving is ended.

Step S113
When a washing / drying course is set, high-speed dehydration is performed. In the high-speed dehydration, the fan 49 is operated at medium and low speeds, and the air whose temperature has been increased by the pressure increase is blown into the rotary drum 29 to warm the clothes. At the same time, the rotating drum 29 is rotated stepwise to a high speed, and water is effectively dehydrated from the warmed clothes (the viscosity of the water decreases as the temperature rises so that water can be efficiently dehydrated).

Routine R102
Similarly to the routine R101, during the high-speed dewatering step, the hot water temperature is compared with the ambient temperature in the housing until the specified time elapses, and if it is determined that the water flow to the water hose is necessary, the water is passed.

Step S114
Perform the first half of the drying process. The fan 49 repeats high-speed rotation and forward / reverse rotation of the rotary drum 29, and while the position of the clothes in the rotary drum 29 is changed, the air whose temperature has been raised by adiabatic compression is further heated by the heater and then blown from the nozzle portion onto the clothes. At this time, the condensed water dehumidified from the high-humidity air in the blower duct 20 is quickly drained through the bellows hose 52 and the outer tank side mounting part 53 that are inclined downward from the bottom of the blower duct 40 toward the rear surface of the outer tank 20. Since it can remove to 37 vicinity, it can avoid that condensed water becomes a heat loss with respect to warm air.

Routine R103
Similarly to the routine R101, in the first half of the drying operation, the hot water temperature is compared with the ambient temperature in the housing until the specified time elapses, and the water flow to the water hose is determined. If it can be judged that the water to the water hose is necessary, the water is passed.

Step S115
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- It is determined as 0.95, the heater 50 is turned off, the air supply valve 13 is opened, the fan 49 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. Since it is incline-inclined from the back surface part of the outer tub 20 to the air duct 40, the air path loss of the air duct 40 inflow part can be reduced.

Step S116
The outer tank lower drain outlet temperature T1a and the outside air temperature T2a are measured (setting of the initial temperature).

Routine R104
Similarly to the routine R101, even in the latter half of the drying operation, the hot water temperature is compared with the ambient temperature in the housing until the specified time elapses, and water passage to the water hose is determined. If it can be judged that the water to the water hose is necessary, the water is passed.

Step S117
The outer tank lower drain outlet temperature T1b and the outside air temperature T2b for the end determination are measured.

Step S118
The process branches after confirming whether the elapsed time from the start of exhausting has reached the specified time.

Step S119
The difference between the intermediate temperature and the end judgment temperature of the outer tub lower drainage temperature and the outside air temperature is obtained (ΔT1 = T1a−T1b, ΔT2 = T2a−T2b), and the temperature difference (ΔT1−ΔT2) is equal to or higher than the specified temperature Check if it is, and branch the process.

Step S120
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 49 is lowered 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 hole 39 side, and the water supply solenoid valve 28 is opened to cool. Water is poured to recover the water seal of the drain trap 10.

Step S121
The process branches after confirming whether or not the elapsed time from opening the water supply electromagnetic valve 28 has reached a specified time.

Step S122
The process branches after confirming whether the pressure of the water level sensor 44 has reached the specified pressure.

Step S123
When a specified time has elapsed since opening the water supply electromagnetic valve 28, or when the pressure of the water level sensor 44 becomes higher than the specified pressure, it is determined that the water sealing of the drain trap 10 has been recovered, and the fan 49 is stopped. The motor 36 is stopped, the intake valve 13 is closed, the water supply electromagnetic valve 28 is closed, and the drying process is completed.

  In the washing and drying machine configured as described above, external air is taken into the housing in order to supplement the air inside the housing sucked into the fan 49. The air taken into the housing is eventually sucked into the air duct through the air intake hole 13, but is heated by exhaust heat from the outer tub 20, the motor 36, the fan 49, etc. in the housing until then. Furthermore, in this embodiment, heat exchange with the water flow hose 53 provided in the lower part of the housing is also added, and the heat is warmed by removing more heat before reaching the intake hole 13. Compared to the case without the water hose 53, about 4% of the total power consumption of the drying process can be reduced. Further, even if the outside air is sucked, the outlet air of the rotary drum 29 containing a large amount of water vapor from the laundry is discharged from the drain hose 9 to the drain port 39, so that the indoor environment is not deteriorated. The outer tub side mounting portion 53 of the bellows hose 52 that connects the rear surface portion of the outer tub 20 and the bottom of the air duct 40 has an upward inclination from the outer tub 20 toward the air duct 40 with respect to the washing / drying machine installation surface. . Furthermore, by making the attachment portion position at the bottom of the air duct 40 higher than the attachment portion position on the rear portion of the outer tub 20 and making the bellows hose 52 inclined, residual water from washing to dehydration is obtained. It is possible to reduce heat loss due to removal from the air flow path, and further air path loss during the exhaust process.

  In the present embodiment, the intake valve 13 is fully opened in the latter half of the drying in step S115. However, if the intake valve 13 is half opened, the humidity level of the blown air slightly increases, but the temperature level can also be increased. For example, when the cloth is thick and a temperature difference is required for heat transfer from the cloth surface to the center, it may be preferable to open the intake valve 13 half as described above. It is preferable to adjust according to load capacity and cloth quality. Even if it is half open, the basic operation and the effect of this embodiment are not affected at all. In this embodiment, the heater 50 is used as the heating means, but the main point of this embodiment is to use the remaining hot water such as bath water for the heat retention of the outer tub 20 and a part of the heating of the intake air. The gist and effects of the present embodiment are not limited to those using another type of heating means such as a heat pump or a thermoelectric element as well as the heater 50. Of course, any other heating means may be used.

  According to the present embodiment, the humid outer tank outlet air is hardly exhausted indoors with respect to the amount of air blown to the outer tank (exhaust of about 20% or less), and warm water from the outside is kept warm in the housing. And it can be used as a hot air heat source. In addition, in a part of the drying operation, the drying power consumption can be reduced by providing a drying process using hot water as a main heat source without using a heat pump or a heater.

  FIG. 9 is an overall perspective view of the second embodiment of the present invention. The water flow means of the present embodiment has a flat container shape that secures an air passage from the bottom to the top of the housing, and has an inlet at one end and an outlet at multiple ends. If necessary, a convection fan 57 that promotes convection of air from the bottom to the top of the housing is provided through the flat water flow means 56. By adopting such a configuration, even when there is relatively little remaining hot water in the bath, heat transfer with the air inside the housing can be maintained well, and the container shape is matched to the bottom shape of the washing and drying machine. Therefore, the installation can be made compact and a small occupied volume is sufficient.

FIG. 10 is an overall perspective view of the third embodiment of the present invention. In this embodiment, the lower half of the outer tub has a double bottom, and the gap formed thereby is a part of the water passing means for passing the remaining hot water. The water passing means includes a portion formed by the gap and a heat exchanging portion by convection of the air in the housing. Moreover, it is preferable to provide a threshold (not shown) for forming a water passage in the gap as necessary. By setting it as such a structure, an outer tank can be kept warm with the remaining hot water of a bath. In this embodiment, only a part of the air blown by the blower fan 49 is exhausted outside the apparatus, and the rest is circulated between the fan 49 and the rotary drum 29. Specifically, an intake port 58 that can take in outside air with a resistance lower than the suction resistance from the circulation air passage is added to the circulation air passage, and downstream of the intake port 54 with respect to the suction of the fan 49. The intake / exhaust is performed by providing an exhaust port 59 that can exhaust approximately the same amount of circulating air as the intake air in the circulating air passage. By adopting such a configuration, it is not necessary to increase the static pressure in the rotary drum 29 and the blowing pressure of the fan 49 in order to exhaust to the outside of the machine. It can be simplified. Further, in the drawing, the structure is such that the air is blown from behind the rotary drum 29, but the structure in which air is blown from the front side as shown in FIG. In this embodiment, a heat pump 64 including a compressor 60, a condenser 61, an expansion means 62, an evaporator 63, and a refrigerant pipe connecting them is used as a heat source. Since the amount of heat of air in the condenser 61 exceeds the amount of heat of dehumidifying and cooling air in the evaporator 63, in order to stabilize the drying operation, as described above, a part of the air at the outlet of the rotary drum 29 is exhausted. The same amount of air is taken into the air path upstream of the condenser 61. For this reason, in the present embodiment, as described above, the temperature of the outer tub is preferentially kept, rather than warming the atmosphere in the housing and recovering exhaust heat by intake and exhaust. However, the heating means is not necessarily the heat pump 64, and it goes without saying that the effect of the present embodiment is essentially the same in other heating means.

  FIG. 11 shows an overall perspective view of the fourth embodiment of the present invention. Similarly to the third embodiment, this embodiment also uses a heat pump 64 including a compressor 60, a condenser 61, an expansion means 62, an evaporator 63, and a refrigerant pipe connecting them as a heat source. Therefore, also in this embodiment, a part of the outlet air of the rotary drum 29 is exhausted, and the same amount of air is taken into the air path from between the evaporator 63 and the condenser 61. In this embodiment, a circulating air fan 65 is first provided in the vicinity of the evaporator 63 and the condenser 61. Further, there is provided an exhaust heat recovery duct 66 that surrounds the motor part of the circulating air fan 65 and has one end connected to the circulating air air path 42 between the evaporator 63 and the condenser 61 and the other end connected to the circulating air air path 42. ing. With such a configuration, a part of the outlet air of the rotary drum 29 is partially exhausted upstream of the evaporator 63, and the same amount of ambient air as the exhaust is absorbed by the exhaust heat of the circulating air fan 65. After raising the temperature, it can be taken into the circulating air from the evaporator 63 toward the condenser 61. Since the motor part of the circulating air fan 65 can be cooled, the circulating air fan 65 can be operated efficiently. On the other hand, the water flow hose 53 for flowing warm water such as hot water remaining in the bath is provided in the housing gap below the outer tub 20 as in the first embodiment. With the above-described configuration, fan exhaust heat having a relatively high temperature level is used to increase the temperature of the intake air, and heat from the water flow hose 53 that passes the remaining bath water is mainly used for heat retention in the housing. Therefore, exhaust heat recovery and heat retention in the housing can be performed more efficiently. An exhaust port 59 is provided for exhausting part of the circulating air from the circulating air flow path that flows into the evaporator 63 from the outlet of the rotary drum 29 to the outside of the wind path. As a result, a part of the circulating air is exhausted outside the circulating air air passage 42 on the upstream side of the evaporator 63, and the same amount of air is discharged from between the evaporator 63 and the condenser 61 to the circulating air fan 65. Take in heat after recovering. With such a configuration, a part of the outlet air of the rotary drum 29 is partially exhausted upstream of the evaporator 63, and the same amount of ambient air as the exhaust is absorbed by the exhaust heat of the circulating air fan 65. After raising the temperature, the air can be taken into the circulating air flow path 42 from the evaporator 63 toward the condenser 61. Since the absolute humidity of the inlet air of the evaporator 63 is equivalent to the absolute humidity of the outlet air of the rotary drum 29, the heating amount of the circulating air in the condenser 61 of the heat pump 64 is reduced without reducing the dehumidifying amount in the evaporator. Therefore, the heat pump 64 can be operated in an efficient state. Furthermore, since the motor part of the circulating air fan 65 can be cooled, the circulating air fan 65 can be operated efficiently.

  FIG. 12 is an overall perspective view of the fifth embodiment of the present invention. The inner tub 67 is applied to a so-called vertical washing and drying machine in which the inner tub 67 is substantially perpendicular to the floor surface. The water flow hose 53 as a water flow means is disposed in the gap from the housing base 1 around the driving motor 36 of the inner tank 67 that drives the inner tank 67 located at the bottom of the outer tank 20. In the case of the vertical type, by keeping the bottom of the outer tub 20 warm, clothes that move up and down and rotate from the bottom of the inner tub 67 can be effectively warmed. In the vertical washer / dryer of the present embodiment, the water tank hose 53 can be easily disposed because the inner tub 67 is fished from the upper part of the housing by a fishing rod (not shown). In addition, the arrangement of the water flow hose 53 in the 67 inner tanks can improve the stability by increasing the weight distribution of the lower part during operation, and can suppress vibration and accompanying noise. Even in the vertical type washer / dryer, there is no great difference between the drum type washer / dryer and the basic components, and the blower duct 40 for connecting the fan 49 for drying and the inner tub 67 is provided. The air duct 40 is formed with an air passage that takes outside air into the air duct 40 and guides it to the suction side of the fan 49, and closes the air passage on the outlet side of the inner tank 67, that is, downstream of the fan 49. The intake valve 13 that can increase the static pressure of 67 is provided. In the vertical type, the exterior can form a substantially cylindrical shape with a rectangular cross section, and therefore, convection from the bottom to the top can be easily obtained in the housing. As a result, heat exchange with the water flow hose 53 can also be performed efficiently, so that air in the housing having a higher temperature can be obtained. In the vertical type, the inner tub 67 is substantially installed with respect to the main shaft 35 of the main motor 68. Therefore, even if the pressure in the inner tub 67 is increased during ventilation and exhaust, the inner tub 67 is inclined greatly in one direction with respect to the increased pressure. There is nothing, and it can be operated more stably.

DESCRIPTION OF SYMBOLS 1 Base 2 Outer frame 3 Door 4 Bellows 5 Drive circuit 6 Drying device 7 Indicator 8 Drain valve 9 Drain hose 10 Drain trap 11 Blow nozzle 11a Blow nozzle outlet 12 Circulating air 13 Intake valve 14 Housing internal air 15 Light emitting diode 16 External air 17 Overflow hose 18 Intake hole 19 Buzzer 20 Outer tank 21 Suspension 22 Front cover 23 Back cover 24, 24a, 24b Switch 25 Operation button input circuit 26 Microcontroller 27 Filter duct 28 Water supply solenoid valve 29 Rotating drum 30 Laundry 31 Fluid Balancer 32 Motor fixture 33 Lifter 34 Metal flange 35 Main shaft 36 Drum drive motor 37 Drain hole 38 Packing 39 Drain port 40 Air duct 41 Controller 42 Circulating air air passage 43 Base 44 Water level sensor 45 Temperature sensor 4 6 Vibration sensor 47 Power switch 48 Operation panel 49 Fan
50 heater 51 fan motor 52 bellows hose 53 water hose 54 bath water pump 55 heat radiating fin 56 flat water flow means 57 convection fan 58 air inlet 59 air outlet 60 compressor 61 condenser 62 expansion means 63 evaporator 64 heat pump 65 Circulation fan 66 Waste heat recovery duct 67 Inner tank 68 Main motor

Claims (5)

  An outer tub that becomes a drying chamber when drying, an inner tub that is rotatably arranged in the outer tub to store laundry, a motor that drives the inner tub, and a housing that supports the outer tub and forms an exterior In a washing / drying machine comprising a body, an air passage for guiding warm air to the inner tub, an air blowing means for blowing air on clothes, and a drain hose for discharging water to the outside of the machine, A washing / drying machine, wherein 70% or more of the total length is disposed so as to fit within the space in the housing from the center height of the outer tub to the bottom of the washing / drying machine.   An outer tub that becomes a drying chamber when drying, an inner tub that is rotatably arranged in the outer tub to store laundry, a motor that drives the inner tub, and a housing that supports the outer tub and forms an exterior In a washer / dryer comprising a body, an air passage for guiding warm air to the inner tub, an air blowing means for blowing air on clothes, and a drainage hose for discharging water to the outside of the machine, hot water is supplied to the housing space The washing / drying machine characterized in that the water passage is intensively arranged below the upper part of the outer tub.   The washing / drying machine according to claim 1 or 2, further comprising an intake means for sucking outside air around the housing into the air passage through the space in the housing, and from the exhaust hose or the exhaust means provided in the air passage during the drying process. A washer-dryer characterized in that the whole or part of the air is exhausted and sucked from the suction means.   The washing / drying machine according to claim 1 or 2, wherein a pitch in the horizontal direction of the water passage is made wider than a pitch in the height direction.   The washing / drying machine according to claim 1 or 2, wherein a pump for pumping wash water from an external water source and a pump for supplying water to the water flow path are used as a common pump.