JP5081781B2 - Washing and drying machine - Google Patents

Description

  The present invention relates to a washing and drying machine provided with means for drying clothes.

  Drying clothes with a washing and drying machine that can perform washing to drying continuously creates high-temperature and low-humidity air with a blower fan and a heat source, and blows it into the washing tub to increase the temperature of the clothes. This is done by evaporating the moisture and discharging the evaporated moisture to the outside 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 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). . 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.

  In addition, as other means for shortening time and reducing power consumption, in order to reduce the amount of water to be evaporated as much as possible, a method of removing water at a higher dehydration speed or dehydrating while blowing hot air There is a way to increase the temperature of clothing.

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

  However, these methods have limitations in reducing power consumption or time reduction.

  Therefore, the present invention performs washing with water at a temperature higher than normal temperature, improves the dehydration rate by lowering the viscosity of the water, and raises the initial temperature of the clothes, thereby reducing the power consumption required for the drying. An object of the present invention is to provide a washing / drying machine that can be operated.

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 tank, said a rotary drum or the inner tub housing for supporting the blowing passage of the water supply means for supplying water, for blowing warm air before Symbol rotary drum or the inner tub to the rotating the drum, A washing / drying machine comprising a drying device having a heating means and a blowing means, a drainage hose for draining water discharged from the outer tub, and a temperature sensing means at the drainage port of the drainage hose. The input of the blowing means is changed according to the temperature of the previous waste water.

  Further, as another means for achieving the above object, the input to the heating means is changed depending on the water temperature of the waste water during washing or before the drying operation.

  Further, as another means for achieving the above object, the energizing time of the heating means is changed depending on the temperature of the waste water during washing or before the drying operation.

Further, an outer tub whose inside becomes a drying chamber at the time of drying, a rotary drum or an inner tub that is rotatably disposed in the outer tub, and stores laundry, a motor that drives the rotary drum or the inner tub, A casing for supporting the rotating drum or the inner tub, a water supply means for supplying water into the rotating drum, a bath water supplying means for pumping up remaining hot water of the bath during washing and drying operations, and hot air in the rotating drum or the inner tub An air passage for blowing air, a heating device and a drying device having air blowing means, a drainage hose for draining water discharged from the outer tub, a temperature detection means at the drainage port of the drainage hose, and at the time of drying In the washing and drying machine in which air circulates in the order of the air blowing means, the heating means, the outer tub, the dehumidifying unit, and the air blowing means,
When water used for washing is pumped by the bath water supply means, the input to the blowing means and the heating means during the drying operation and the drying operation time are changed.

  According to the present invention, when the water temperature of the waste water during washing or before the drying operation is detected and the water temperature is higher than the normal temperature, or when the bath water pump is driven, the input or energization to the blowing means or the heating means in the drying operation is performed. By suppressing the time (because the control mode is changed according to the water temperature), the power consumption during the drying operation can be reduced.

  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 an 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 an embodiment of the present invention, and shows a left sectional view of a washing / drying machine. FIG. 3 relates to an embodiment of the present invention, and shows a right sectional view of the washing / drying machine. FIG. 4 is related to the Example of this invention, The top view which removes the upper surface cover of a washing-drying machine and shows an internal structure is shown. FIG. 5 is a rear view showing the internal structure of the washing / drying machine according to the embodiment of the present invention with the rear cover removed.

  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.

  A drying device 6 including a dehumidifying duct 5 for drying the laundry 30 in the rotating drum 29, a fan 61 as a blowing means, and a heater 62 as a heating means is fixed to the outer frame 2 apart from the outer tub 20 (not shown). ing. The dehumidifying duct 5 and the ventilation port 32 are connected substantially horizontally by a flexible bellows 4, 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.

  Water supply can be selected from a normal washing / drying (or washing) course using tap water and a hot water removal course using remaining hot water in the bath, and is selected by the user from the operation panel 106. When performing hot water removal, the washing machine main body side connection part of the hot water removal hose is connected in advance to the bath water pump port 16a, and the hot water removal hose tip is put into the bathtub. When washing is started, first, the bath water pump water supply valve of the water supply electromagnetic valve 16 is opened, and tap water is supplied to the bath water pump 17. Thereafter, the bath water pump 17 is driven, and the tap water becomes priming water to pump up the hot water in the bathtub. When pumping is started, the tap water supply valve is closed, and the remaining hot water in the bath is supplied into the drum 29 through the water supply pipe.

  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.

  FIG. 7 is a block diagram of the control device 138 of the washer / dryer. 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 the drive circuit 154, and is connected to the water supply electromagnetic valve 16, the bath water pump 17, the drain valve 8, the motor 36, the fan 61, the heater 62, the intake valve 13, the cooling water valve 19, and the like. Controls the opening / closing, rotation, and energization of these. 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
The user turns on the washing machine.

Step S102
Check the status of the washer / dryer and make initial settings.

Steps S103 to S104
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.

  Here, the case where the hot water removal of this invention is set is described. The operation button switch 113a is used to input hot water removal, and a washing course is set.

Step S105
The process branches after monitoring the instruction input from the start switch 112 of the operation panel 106.

Step S106
The process branches after confirming whether or not the washing / drying course is set (if only the washing course is set, washing, intermediate dehydration, rinsing, and final dehydration are sequentially executed to finish the operation).

Step S107
For washing, wash, intermediate dehydration, rinse, and final dehydration are sequentially performed. In this embodiment, since hot water removal is set, the bath water pump 17 is driven, and bath water is supplied into the drum 29 at the time of washing and rinsing. Others are the same as those of a normal drum-type washer / dryer, and thus detailed description thereof will be omitted.

Step S108
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 S109
Determine the initial temperature (water temperature) of the drain. If the initial temperature is 25 ° C. or more, the process proceeds to step S110a. If the initial temperature is 25 ° C. or less, the process proceeds to step S110d. In the present embodiment, the case where the process proceeds to step 110a will be described in detail.

Step 110a
The fan rotation speed setting during the drying operation is changed (if it is 25 ° C. or lower, the process proceeds to step S110d and a normal drying operation is performed).

  In this embodiment, the initial setting value is changed so as to be lower than the normal fan rotation speed if it is 25 ° C. or higher. As a result, the power consumption can be reduced by reducing the fan rotation speed without extending the drying time.

Step S110b
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 a high speed to effectively dehydrate moisture from the warm clothing. At this time, since the temperature rises due to the blowing of warm air and the remaining hot water of the bath (approximately 30 ° C.), the viscosity of the water is lowered and the water 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 S110c
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 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
The process branches after confirming whether the elapsed time from the start of drying has reached the specified time.

Step S112
The cooling water valve 19 is opened and the cooling water 52 is poured to perform water cooling and dehumidification.

Step S113
An intermediate temperature between the drain port 37 and the fan intake port at the lower part of the outer tub 20 is measured.

Step S114
The process branches after confirming whether the elapsed time from the start of drying has reached the specified time.

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

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

Step S114
When the specified time has elapsed since the start of drying, or when the difference between the final temperature and the intermediate temperature is greater than the specified temperature, (= dry cloth mass / massage weight) becomes 1.0 or more and the drying is completed. to decide.

  The washing / drying machine configured in this manner has a higher clothing temperature than normal temperature (20 ° C. water) because the clothing temperature at the initial drying stage is increased by the hot water used for washing (residual hot water in the bath). It is possible to reduce the difference from the clothing temperature in the clothes and the power consumption required for the temperature rise.

Here, drying using warm water (residual hot water of about 30 ° C.) under conditions of 6 kg of clothing, heater input of about 600 W, air volume of about 1.5 m ³ / min, cooling water volume of 0.3 to 0.5 L / min, Compared to drying with room temperature water (about 20 ° C.), the clothing temperature differs by about 5 ° C. at the end of washing. In order to raise the clothing temperature to 5 ° C., 50-60 Wh is required at a heater input of about 600 W, so that about 5% of the total power consumption of the drying process can be reduced.

  As another embodiment of the present invention, as shown in step S110a of FIG. 9, the means for setting the energization time of the heater 62 to be shorter than usual or the input of the heater 62 is lowered to reduce the power consumption (heater OFF). Even means (such as providing time) can reduce power consumption.

  Further, the rotation of the hot air dehydrating fan 61 and the input of the heater 62 shown in step S110b of FIGS. 8 and 9 can be stopped to reduce power consumption.

  Even if hot water removal is not set, households that can supply hot water or when the tap water temperature is high, various settings are made during the drying operation at the water temperature of the drain outlet 37, so that power consumption can be reduced.

The perspective view of a washing-drying machine which concerns on the Example of this invention is shown. The left cross-sectional view of the washing and drying machine according to the embodiment of the present invention is shown. The right sectional view of the washing / drying machine according to the embodiment of the present invention is shown. The top view which concerns on the Example of this invention and removes the upper surface cover of a washing-drying machine and shows an internal structure is shown. The rear view which concerns on the Example of this invention and removes the back cover of a washing-drying machine and shows an internal structure is shown. The block diagram of the control apparatus of a washing dryer related to the Example of this invention is shown. The flowchart of the control processing program of a washing dryer related to the Example of this invention is shown. The flowchart of the control processing program of a washing / drying machine according to another embodiment of the present invention is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Outer frame 3 Door 4, 7 Bellows 5 Dehumidification duct 6 Drying device 8 Drain valve 9 Drain hose 11 Blowing nozzle 12 Circulating air 16 Water supply solenoid valve 17 Bath water pump 18 Exhaust hose 20 Outer tank 21 Suspension 22 Front cover 23 Back Cover 29 Rotating drum 30 Laundry 31 Fluid balancer 33 Lifter 34 Flange 35 Main shaft 36 Drum drive motor 37, 39 Drain port 38 Packing 61 Fan 62 Heater

Claims (6)

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 for supporting the inner tank, a water supply means for supplying water to the rotating the drum, before Symbol air passage for blowing hot air to the rotary drum or the inner tub, a drying apparatus having a heating means and the blower means, the In a washing and drying machine comprising a drainage hose for draining water discharged from the outer tub, and having a temperature detection means at the drainage port of the drainage hose,
A washing and drying machine characterized by controlling the air blowing means and the heating means in accordance with the water temperature of waste water during washing or before drying operation. 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 for supporting the inner tank, a water supply means for supplying water to the rotating the drum, before Symbol air passage for blowing hot air to the rotary drum or the inner tub, a drying apparatus having a heating means and the blower means, the In a washing and drying machine comprising a drainage hose for draining water discharged from the outer tub, and having a temperature detection means at the drainage port of the drainage hose,
A washing / drying machine characterized in that the control mode of the heating means is changed depending on the temperature of the waste water during washing or before drying operation. 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 for supporting the inner tank, a water supply means for supplying water to the rotating the drum, before Symbol air passage for blowing hot air to the rotary drum or the inner tub, a drying apparatus having a heating means and the blower means, the In a washing and drying machine comprising a drainage hose for draining water discharged from the outer tub, and having a temperature detection means at the drainage port of the drainage hose,
A washing / drying machine characterized in that the energization time of the heating means is changed depending on the temperature of the waste water during washing or before the drying operation. 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 for supporting the inner tank, a water supply means for supplying water to the rotating the drum, before Symbol air passage for blowing hot air to the rotary drum or the inner tub, a drying apparatus having a heating means and the blower means, the In a washing and drying machine comprising a drainage hose for draining water discharged from the outer tub, and having a temperature detection means at the drainage port of the drainage hose,
A washing / drying machine characterized in that the input to the air blowing means and the heating means or the energizing time of the heating means is changed depending on the temperature of the waste water during washing or before the drying operation. In the washing and drying machine according to claims 1 to 4,
Provide bath water supply means to pump up the remaining hot water of the bath during washing and drying operation,
When the water used for washing is pumped up by the bath water supply means, the input to the blowing means and the heating means during the drying operation or the energizing time of the heating means is changed. 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 for supporting the inner tank, a water supply means for supplying water to the rotating the drum, before Symbol air passage for blowing hot air to the rotary drum or the inner tub, a drying apparatus having a heating means and the blower means, the In a washing and drying machine comprising a drainage hose for draining water discharged from the outer tub, and having a temperature detection means at the drainage port of the drainage hose,
A washing / drying machine characterized by changing a control mode of the blowing means or the heating means in accordance with a water temperature of waste water during washing or before drying operation.

Images