JP4866810B2 - Dryer and washing dryer - Google Patents

Description

  The present invention relates to a dryer or a washing dryer 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 heat source, blows it into the washing tub, raises the temperature of the clothes, and moisture from the clothes By evaporating and evaporating the evaporated water. 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, for home use, a dehumidification system that does not allow moisture to enter the room where the washing and drying machine is installed is often used.

  The laundry dryer has (1) short drying time, (2) low power consumption, (3) good drying finish (low wrinkle of clothing), and (4) little damage to clothing. That is required. Among these, regarding (1) and (2), there is a washing and drying machine that efficiently performs drying by appropriately controlling the flow rate and temperature of air according to the progress of drying. In addition, there is a washing and drying machine that improves the movement of clothes in the washing tub and efficiently evaporates moisture from the clothes. Furthermore, there is a washing / drying machine that uses a water cooling system as a dehumidifying system to increase the efficiency of heat exchange with hot and humid hot air by allowing cooling water to flow uniformly over the wall surface of the air passage. Regarding (4), there is a washing and drying machine provided with a low temperature drying course in which the temperature of the warm air is limited so that the temperature of the clothes does not rise too much (the heater input is suppressed). Regarding (3), since wrinkles are generated when clothes are entangled or twisted during drying, there are washing dryers that are less likely to cause tangling or twisting of clothes.

JP 62-44299 A JP-A-9-774 JP-A-2005-080946 JP 2002-346272 A

  Even if there is no entanglement or twisting, if the amount of clothing increases with respect to the volume of the dryer, the clothing cannot spread sufficiently, so that the clothing is dried while being folded and wrinkles are generated. As an example, FIG. 13 shows a photograph of clothing (cotton pajamas trousers) when 2 kg of clothing is dried by a commercially available clothing dryer (three types of drum volumes 62L, 77L, and 99L). It can be seen that the wrinkle decreases as the drum volume increases. In this way, it has been known that wrinkles can be reduced as the volume increases. However, in home-use washer / dryers, washing / drying is limited due to the size of the installation location and restrictions on the delivery path (corridor and door) to the installation location. There was a limit to the size of the machine, and it was difficult to ensure a sufficient volume. For this reason, clothing that cares about the finish of drying is separated from other general clothing, and there is only a method of drying by reducing the amount of clothing. However, it is not realistic to perform time-consuming drying several times, and many people do not use a dryer because such clothes are dried by hanging.

  An object of the present invention is to provide a dryer or a washing dryer having improved drying finish without increasing the volume of the drum.

In order to achieve the above object, the present invention is characterized by:
A drier having a rotating drum in which clothing is accommodated, a motor for driving the rotating drum, and a casing for supporting the rotating drum, and being accommodated in the rotating drum during the drying operation. There is provided means for directly blowing wind on the clothing, and the wind blown by this means is configured to have a predetermined air volume and wind speed set so as to stretch the wrinkles of the housed clothing.

  Further, the operation unit is provided with a button for setting whether or not the means for blowing the direct wind is necessary.

  Further, when the operation of the means for blowing the direct wind is set, a display lamp is provided to clearly indicate the selection.

  The dryer configured as described above blows high-speed wind directly on the clothes during the drying operation, so that the clothes are spread by the wind and the wrinkles of the clothes are stretched, so that a dry finish with less wrinkles can be realized.

  Furthermore, since the operation unit is provided with a button for setting whether or not the direct air blowing means is required to operate, the user can arbitrarily select whether or not to add the effect of stretching the wrinkles of the clothes in each driving course. can do. For example, in the case of clothing that tends to wrinkle, such as shirts, it has the effect of stretching wrinkles (wiping high-speed wind). It can be used properly.

  In addition, by providing a display lamp that clearly indicates that the button has been selected in the operation unit, it is possible to confirm whether or not the user has set the effect of stretching the wrinkles of the clothing in each driving course.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is an external view of a drum type washing / drying machine according to an embodiment of the present invention. FIG. 2 is a perspective view showing a part of the casing cut off to show the internal structure, FIG. 3 is a rear view with the back cover removed to show the internal structure, and FIG. 4 shows the internal structure. FIG. 5 is a side view, and FIG. 5 is a plan view showing a part of the housing cut away to show the internal structure.

  Reference numeral 1 denotes a housing constituting the outer shell. The housing 1 is mounted on a base 1h, and includes left and right side plates 1a and 1b, a front cover 1c, a back cover 1d, a top cover 1e, and a lower front cover 1f. The left and right side plates 1a and 1b are joined by a U-shaped upper reinforcing material (not shown), a front reinforcing material (not shown), and a rear reinforcing material (not shown). A box-shaped housing 1 is formed and has sufficient strength as a housing.

  9 is a door which closes the insertion port for putting in and taking out the clothes provided in the approximate center of the front cover 1c, and is supported by the hinge provided in the front reinforcement material so that opening and closing is possible. When the door opening button 9d is pressed, the lock mechanism (not shown) is released to open the door, and when the door is pressed against the front cover 1c, the door is locked and closed. The front reinforcing member has a circular opening for putting clothes in and out concentrically with an opening of the outer tub described later.

  Reference numeral 6 denotes an operation panel provided at the upper center of the housing 1 and includes a power switch 39, operation switches 12, 13, 15 a, and a display 14. The operation panel 6 is electrically connected to a control device 38 provided at the lower part of the housing 1.

  3 is a cylindrical washing and dewatering tub (rotary drum) supported rotatably, having a large number of through holes for water flow and ventilation on its outer peripheral wall and bottom wall, and clothing on the front end face An opening 3a for taking in and out is provided. A fluid balancer 3c integrated with the washing and dewatering tub 3 is provided outside the opening 3a. A plurality of lifters 3b extending in the axial direction are provided inside the outer peripheral wall. When the washing and dewatering tub 3 is rotated during washing and drying, the clothes are lifted along the outer peripheral wall by the lifter 3b and centrifugal force, and dropped by gravity. Repeat the movements. The rotation center axis of the washing and dewatering tub 3 is inclined so that the horizontal or opening 3a side becomes higher.

  Reference numeral 2 denotes a cylindrical outer tub, which coaxially encloses the washing / dehydrating tub 3, opens on the front surface, and attaches the motor 4 to the outer center of the rear end surface. The rotating shaft of the motor 4 passes through the outer tub 2 and is connected to the washing and dewatering tub 3. An outer tub cover 2d is provided at the opening on the front surface, and water can be stored in the outer tub. In the center of the front side of the outer tub cover 2d, there is an opening 2c for taking in and out clothing. The opening provided in the main opening 2c and the front reinforcing member 37 is connected by a rubber bellows 10, and the outer tub 2 is sealed with water by closing the door 9. A drain port 2b is provided at the bottom bottom of the outer tub 2 and a drain hose 26 is connected thereto. A drain valve (not shown) is provided in the middle of the drain hose 26. Water is stored in the outer tank 2 by closing the drain valve and supplying water, and the drain valve is opened to drain the water in the outer tank 2 outside the machine. To discharge.

  The outer tub 2 is supported in a vibration-proof manner by a suspension 5 (consisting of a coil spring and a damper) whose lower side is fixed to the base 1h. The upper side of the outer tub 2 is supported by an auxiliary spring (not shown) attached to the upper reinforcing member, and prevents the outer tub 2 from falling in the front-rear direction.

  Reference numeral 19 denotes a detergent container provided on the upper left side in the housing 1, and a drawer-type detergent tray 7 is mounted from the front opening. When putting detergents, the detergent tray 7 is pulled out as shown by a two-dot chain line in FIG. The detergent container 19 is fixed to the upper reinforcing material of the housing 1.

  On the rear side of the detergent container 19, components related to water supply such as a water supply electromagnetic valve 16, a bath water supply pump 17, a water level sensor (not shown) are provided. The top cover 1e is provided with a water supply hose connection port 16a from a water tap and a water absorption hose connection port 17a for remaining hot water in the bath. The detergent container 19 is connected to the outer tub 2 and supplies washing water to the outer tub 2 by opening the water supply electromagnetic valve 16 or operating the bath water supply pump 17.

  Reference numeral 29 denotes a drying duct installed vertically inside the back surface of the housing 1, and a lower portion of the duct is connected to an intake port 2 a provided below the back surface of the outer tub 2 by a rubber bellows tube B 29 a. A water-cooled dehumidifying mechanism (not shown) is built in the drying duct 29, and cooling water is supplied from the water supply electromagnetic valve 16 to the water-cooled dehumidifying mechanism. The cooling water flows down along the wall surface of the drying duct 29, enters the outer tub 2 through the intake port 2a, and is discharged from the drain port 2b.

  The upper part of the drying duct 29 is connected to a filter duct 27 installed in the front-rear direction on the upper right side in the housing 1. The filter duct 27 has an opening on the front surface, and a drawer-type drying filter 8 is inserted into the opening. The air that has entered the filter duct 27 from the drying duct 29 flows into the mesh filter 8a of the drying filter 8, and lint is removed. Cleaning of the dry filter 8 is performed by pulling out the dry filter 8 and taking out the mesh filter 8a. In addition, an opening is provided on the lower surface of the insertion portion of the filter 9 in the filter duct 27, and the opening is connected to the intake duct 33, and the other end of the intake duct 33 is connected to the intake port of the blower unit 28. is doing.

  The blower unit 28 includes a drive motor 28a, a fan impeller (not shown), and a fan case 28b. The fan case 28b incorporates a heater 31 and heats air sent from the fan impeller. The discharge port of the blower unit 28 is connected to the hot air duct 30. The hot air duct 30 is connected to a hot air outlet 32 provided in the outer tank cover 2d through a rubber bellows tube A30a and a bellows tube joint 30b. In the present embodiment, since the blower unit 28 is provided on the upper right side in the housing 1, the hot air outlet 32 is provided at a position diagonally above and to the right of the outer tank cover 2d, and the distance to the hot air outlet 32 is set. I try to keep it as short as possible.

  Temperature sensors (not shown) are provided at the outlet 2b and the inlet and outlet of the blower unit 28.

  A feature of the present invention is to apply a high-speed wind directly to the garment and to stretch wrinkles generated in the garment by the force of the wind. For this purpose, a blower unit 28 that generates high-speed wind and a hot air outlet 32 that directly applies the wind to clothing are required. The performance required for the blower unit will be described later. Details of the hot air outlet 32 will be described with reference to FIGS. FIG. 7 is a front view of the outer tub cover 2d of the hot air outlet 28 installation portion, and FIG. 8 is a cross-sectional view of the hot air outlet 32 cut along a two-dot chain line AA in FIG.

  The hot air outlet 32 is provided along the opening 2c from the front side of the outer tub cover 2d, and flow paths 32b and 32c are formed therein. A bellows pipe joint 30b is attached to the inlet of the hot air outlet 32, and a nozzle 32d is formed at the outlet of the flow path 32c. The inner diameter of the opening 2c of the outer tub cover 2d and the inner diameter of the opening 3a of the washing / dehydration tub 3 are set to be substantially the same so that clothing does not enter between the gap between the washing / dehydration tub 3 and the outer tub cover 2d. Yes. For this reason, the outlet 32a of the hot air outlet 32 is formed so as to protrude inward from the inner peripheral surface of the opening 2c, and the nozzle 32d is opened toward the washing and dewatering tub 3. By doing in this way, the warm air which came out of the nozzle 32d can be directly applied to the clothing in the washing and dewatering tank 3.

  If the amount of protrusion of the outlet portion 32a is too large, the movement of clothing is hindered during washing or drying. Therefore, as shown in FIG. 7, the amount of protrusion is reduced by using a flat slit shape, and the opening 2c and the outlet The surface shape of the portion 32a is changed smoothly. Further, the flow path 32b and the flow path 32c are configured so that there is no useless protrusion or a sudden change in the flow direction, and the flow path area gradually decreases toward the nozzle 32d. By doing so, it is possible to reduce the pressure loss and fluid sound that occur when high-speed wind flows through the flow paths 32b and 32c.

  The flow of wind during the drying operation is as follows. When the blower unit 28 is operated and the heater 31 is energized, high-speed warm air blows into the washing and dewatering tub 3 from the nozzle 32d (arrow 41), hits the wet clothing, warms the clothing, and moisture evaporates from the clothing. The air that has become hot and humid flows from the through-hole provided in the washing and dewatering tub 3 to the outer tub 2 and is sucked into the drying duct 29 from the air inlet 2a and flows from the bottom to the top (arrow 42). Cooling water from the water cooling and dehumidifying mechanism flows down on the wall surface of the drying duct 29, and the hot and humid air is cooled and dehumidified by contacting with the cooling water, and becomes dry low temperature air and enters the filter duct 27 (arrow 43). . The lint is removed through the mesh filter 8a provided in the filter duct 27, enters the intake duct 33, and is sucked into the blower unit 28 (arrow 44). Then, it is heated again by the heater 31 and circulates so as to blow into the washing and dewatering tub 3.

  FIG. 9 is an example of the results of examining the wind speed ejected from the nozzle 32d and the finish of the clothes after drying when the drying operation as described above is performed. The wind speed and the air volume were adjusted by changing the rotation speed of the motor 28a and the area of the nozzle 32d. The wind speed is a value calculated from the result of measuring the flow pressure characteristic of the blower unit 28. The flow pressure characteristics were measured with the apparatus shown in FIG. An orifice is attached to the suction port of the pressure equalizing box and the discharge port of the blower unit 28, and the flow rate and the pressure of the intake port and the discharge port of the blower unit 28 are measured while varying the diameter of the orifice and the rotation speed of the motor 28a. The characteristics were determined. Then, the pressure of the air inlet and outlet of the air blowing unit 28 when the air blowing unit 28 is mounted on the washing / drying machine is measured, the flow rate is obtained from the above flow rate pressure characteristics, and the value obtained by dividing the flow rate by the nozzle area is the wind speed. It was.

  The experimental conditions are as shown in the figure, and the testing machine is a drum-type washing and drying machine having a washing and dewatering tank having a diameter of 600 mm and a volume of 75 L, and the amount of cloth is 2 kg. Finished evaluation was performed on various garments, but the results for thin cotton pajamas trousers with the most wrinkles were shown. Although the evaluation is a five-step sensory evaluation by visual observation, an example of the finished condition with respect to the sensory evaluation value is shown in FIG. The upper nozzle is a case where the nozzle 32d is provided at the above-described position (a position obliquely above and to the right of the outer tub cover 2d), and the lower nozzle is a case where it is provided below the outer tub cover 2d. The blowing direction of the wind from the nozzle 32d was made to face substantially the center of the bottom wall of the washing and dewatering tank 3. The result is an average value of three evaluators.

From the figure,
(A) The finish improves as the wind speed increases. However, if the wind speed is too high, the finish is worsened (from the data of the upper nozzle 1.5 m ³ / min).
(B) If the wind speed is the same, the higher the flow rate, the better the finish, but the difference between the flow rate of 1.5 m ³ / min and 1.7 m ³ / min is small.
(C) When compared at the same wind speed and flow rate, the lower nozzle has a better finish than the upper nozzle.
I understand that. Thus, the higher the wind speed, the better the finish, but the higher the flow rate, the better. Therefore, it is desirable not to increase either one but to set the balance in consideration of the balance between the two. Specifically, not only the finish but also the current value (in the case of a commercial power supply for home use, the total of the blower unit 28, the heater 31, the motor 4, and the control device 38 is 15 A or less), the drying performance, and the duct through which the wind circulates. It is necessary to determine the wind speed and flow rate in consideration of the flow path area and the mounting on the washer / dryer.

If the sensory evaluation value is 4 or more, there is little dissatisfaction even if the clothes after drying are worn as they are. In order to obtain a sensory evaluation value of 4 or more in this experimental machine, the upper nozzle requires a flow rate of 1.5 m ³ / min and a wind speed of 90 m / s or more. However, since the finish tends to deteriorate if the wind speed is too high, it is better to suppress the wind speed to about 130 m / s at the maximum. Further, the finish is best at a wind speed of 100 to 120 m / s. In the case of the lower nozzle, a flow rate of 1.5 m ³ / min and a wind speed of 60 m / s or more are necessary. However, since the finished condition hardly changes at a wind speed of 80 m / s or more, it may be about 80 m / s at the maximum. The nozzle area for generating the wind speed is 190 to 280 mm ² in the case of the upper nozzle and 310 to 415 mm ² or less in the case of the lower nozzle. Accordingly, the blower unit 28 needs to have a performance that allows the flow rate to flow from the nozzle having the area. In this embodiment, the nozzle position is the upper nozzle, the nozzle area is 250 mm ² (on the slit of width 50 × height 5 mm), the blower unit 28 has a fan impeller diameter of 140 mm, a blade thickness of 7 mm, and the rotational speed per minute. Driving at 16000 rpm. As a result, the fan discharge pressure is about 7500 Pa (at an air temperature of 30 ° C.), and a wind speed of about 100 m / s is obtained at a flow rate of about 1.5 m ³ / min.

  In the case of clothing that is difficult to wrinkle, a finish with a sensory evaluation value of 4 or more can be obtained even at a value lower than the above wind speed. However, it is common to dry various clothing at the same time. It is better to determine the wind speed.

  The reason why the wrinkle of clothing is reduced by applying high-speed wind to the clothing will be described with reference to FIG. FIG. 12A is a schematic diagram when the high-speed wind 41 from the nozzle 32d hits the clothing. Here, the case where there is other clothing on the back of the clothing is shown. When the wind hits the garment, the garment is forced to spread by the wind (arrow (1)), and after being struck by the garment, the direction of flow is changed and the wind flowing along the garment surface is pulled to the left and right (arrow (2)) ) Acts. The wrinkles of clothes are stretched by the force of (1) and (2). When the amount of clothes in the washing / dehydrating tub 3 is large, wrinkles are stretched mainly by the force of (1) because there are many other clothes that are difficult to move freely around the clothes directly hit by the wind. When the amount of clothing is small, the clothing moves freely, and the clothing hit by the wind looks like a windsock while being pushed in the direction of the wind. Stretched. When the amount of clothing is small, the clothing spreads during drying and wrinkles are unlikely to occur, so the force (1) is considered here.

  As shown in FIG. 12B, the force F of (1) is proportional to the product of Q and V, where Q is the flow rate of the wind blown from the nozzle 32d and V is the wind speed. If the distance between the nozzle 32d and the clothing is X, the force F is proportional to V and inversely proportional to X. However, when the distance between the nozzle 32d and the clothing is very close (from the core region of the jet, from the nozzle to a position about 6 times the nozzle diameter in the case of a circular nozzle), F is proportional to V regardless of X. Therefore, in order to increase F, the flow rate Q is increased, the wind speed V is increased, or X is decreased (clothes are brought closer to the nozzle). The finishing result shown in FIG. 8 can be explained with this.

  In order to increase the flow rate Q, it is necessary to increase the rotational speed of the fan of the blower unit 28 or to increase the outer diameter or blade height of the fan. Also, it is better to reduce the pressure loss by increasing the area of the duct through which the hot air passes. In particular, in the case of the water cooling method using water for dehumidification, if the flow velocity of the air flowing through the drying duct 29 is too high, a phenomenon that the cooling water is blown off by the wind occurs. When the cooling water reaches the filter 8a or the heater 31, it leads to a significant decrease in the drying efficiency. Therefore, it is essential to increase the flow path area of the drying duct 29. For this reason, if the flow rate is significantly increased, the size of the duct and the blower unit is increased, which leads to an increase in the size of the housing 1 and makes it difficult to install the washing / drying machine at home.

  On the other hand, in order to increase the wind speed V, the air blowing unit 28 may be a pressure type to reduce the nozzle area. When a general turbofan is used as the blower unit 28, there are a method of increasing the diameter of the fan impeller at a low rotational speed and a method of increasing the rotational speed while keeping the diameter of the fan impeller small. High-speed rotation has the advantage that it can be mounted in the same housing as the conventional one.

  In the finishing test results shown in FIG. 8, when the wind speed was too high, a phenomenon in which the finishing deteriorated was observed. This cannot be explained above. Observing the movement of the clothing during the experiment, it was found that if the wind speed was too high, there was a phenomenon in which the clothing was twisted by the wind. Therefore, this is the cause of deterioration of the finish.

  In order to reduce the distance X between the nozzle 32d and the garment, the nozzle 32d may be provided near the place where the garment always passes during drying. Accordingly, the position of the nozzle 32d may be provided at the position where the lifter 3b lifts the clothes, that is, the lower side of the washing and dewatering tub 3 (the lower side of the outer tub cover 2d). By providing the nozzle below, the finish can be improved even when the wind speed is about 60 m / s as shown in FIG. 8, so the pressure and flow rate of the blower unit 28 can be reduced compared to when the nozzle is above. There is an advantage that the rotational speed of the fan impeller can be reduced. Also, if the nozzle is at the bottom, the wind blowing direction and the direction of gravity are reversed. When the wind hits the garment, the garment is difficult to escape due to its own weight, and the force F acting on the garment is not attenuated, so that the finish can be further improved.

  When the nozzle 32d is provided on the lower side, the installation of the drying duct 29 and the air blowing unit 28 on the lower side of the outer tub 2 can be made compact in terms of mounting. However, since the washing water at the time of washing enters from the nozzle 32d and flows into the blower unit 28, it is necessary to take measures such as providing a water entry prevention mechanism or a waterproof blower unit.

  In the present embodiment, the nozzle 32d is provided at a position obliquely above and to the right of the outer tub cover 2d, so there is no fear that the washing water will enter. In this case, it is necessary to appropriately control the number of rotations of the washing and dewatering tank 3 so that the clothes are lifted up to the vicinity of the nozzle 32d so that the wind as fast as possible hits the clothes. The clothes are lifted upward by the centrifugal force generated by the rotation of the washing and dewatering tank 3 and the lifter 3b. For this reason, the number of rotations has an optimum value according to the diameter of the washing and dewatering tub 3, and the number of rotations decreases as the diameter increases. However, there are clothes that fall quickly due to gravity, and the average nozzle-to-clothing distance is inevitably longer than when the nozzles are provided on the lower side. Therefore, as shown in FIG. Need to increase.

  FIG. 6 is a block diagram of the control device 38 of the washing / drying machine. A microcomputer 50 is connected to the operation button input circuit 51, the water level sensor 34, and the temperature sensor 52 connected to the switches 12, 13a, 13b, 13c, and 15a. Receive various information signals. An output from the microcomputer 50 is connected to a drive circuit 54 and connected to a water supply electromagnetic valve 16, a drain valve 25, a motor 4, a blower fan 28, a heater 31, and the like, and controls opening / closing, rotation, and energization thereof. Further, it is connected to a 7-segment light emitting diode display 14a, a light emitting diode 56, and a buzzer 57 for informing the user of the operating state of the washing machine.

  The microcomputer 50 is activated when the power switch 39 is pressed and the power is turned on, and executes a basic control processing program for washing and drying as shown in FIG.

  Based on the content of the built-in high finish setting presence / absence memory 59, the microcomputer 50 turns on the high finish lamp 58 when there is a setting, and turns off the high finish lamp 58 when there is no setting. The high-finish setting presence / absence memory 59 is a type of memory in which the memory contents are not lost even when the main body is turned off.

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

Step S102
The indicator 14 of the operation panel 6 is turned on, and a washing / drying course is set in accordance with an instruction input from the operation button switches 13a, 13b, 13c.

Step S103
The input support of the high finish setting button 15a is monitored, and when the button is pressed, the content of the high finish setting presence / absence memory 59 is switched (changed to “not set when set” or “set when not set”). Change), the high finish lamp 58 is turned on when the high finish setting is set, and the high finish lamp is turned off when the high finish setting is not set.

Step S104
The process branches after monitoring the instruction input from the start switch 12 of the operation panel 6.

Step S105
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 S106
The process branches after confirming whether the washing / drying course is set. When only the washing course is set, the driving is ended.

Step S107
When a washing / drying course is set, hot air dehydration is performed. In the hot air dehydration, the blower unit 28 is operated at a low speed, and the heater 31 is energized (strong mode) to blow warm air into the washing and dewatering tub 3 to increase the temperature of the clothes. At the same time, the washing and dewatering tub 3 is rotated at a high speed to effectively dehydrate moisture from the warmed clothes (the viscosity of the water decreases as the temperature rises, so that the water can be efficiently dehydrated). In the present embodiment, the rotation speed of the blower unit 28 is set to 11000 rotations per minute. This is to prevent the allowable current value (15 A) from being exceeded.

Step S108
Dry operation 1 is executed. The blower unit 28 operates at a low speed, the heater 31 operates in a strong mode, repeats forward / reverse rotation of the washing / dehydrating tub 3, and blows hot hot air onto the garment while changing the position of the clothing in the washing / dehydrating tub 3. . The temperature of the entire clothing rises and moisture evaporates from the clothing.

Step S109
When the content of the memory with or without the high finish setting is “set”, the process proceeds to step S110. If “not set”, step S108 is performed until the drying is completed.

Step S110
The process branches after confirming whether the elapsed time from the start of drying has reached a predetermined time. The specified time is set before the dryness of the clothes (= the mass of the dry cloth / the mass of the compress) reaches 0.9.

Step S111
Dry operation 2 is executed. While the forward / reverse rotation of the washing / dehydrating tub 3 is continued, the blower unit 28 is rotated at a high speed, the heater 31 is set in a weak mode, high-speed air is blown to the clothes in the washing / dehydrating tub 3, and drying is performed while stretching wrinkles. Do. The reason why the heater 31 is set to the weak mode when the blower unit 28 is rotated at high speed is to prevent the allowable current value from being exceeded. In the present embodiment, the rotation speed of the blower unit 28 is set to 16000 rotations per minute. The input current of the blower unit 28 at 16000 revolutions per minute is about 7 A, the heater 31 is about 6 A, and the motor 4 and the control device 38 are about 1 A.

  In this step, since the heater 31 is in the weak mode, the hot air temperature is lower than that in step S108. Especially when the dryness exceeds 0.9, the temperature of the clothing rises and approaches the warm air temperature. However, since the warm air temperature is low, the clothing temperature can be kept low and damage to the clothing can be reduced. There are also benefits.

  Drying is performed while monitoring the temperature of the warm air or the cooling water drainage using a temperature sensor, and is finished when the rate of temperature change reaches a predetermined value.

  FIG. 15 shows an example of an operation panel according to an embodiment of the present invention. Buttons 13a, 13b, and 13c are used to switch the driving course. By pressing each button, the courses “washing”, “washing”, and “drying” can be switched. By pressing each button, a course name display lamp is displayed. 11 lights up sequentially. For example, every time the “washing” button 13b is pressed once, “standard” → “careful” → “handmade” is switched. After each course is set, the high finish lamp 58 is turned on by pressing the high finish setting button 15a (wind iron button), and the high finish operation can be set in the washed course. By pressing the high finish setting button 15a again, the high finish lamp 58 is turned off, and the high finish setting can be disabled. The presence / absence of the high finishing setting is stored in the high finishing setting presence / absence memory 59 of the microcomputer 50, and the previous setting content is reflected as the initial setting at the next operation. However, when a course that cannot be set to high finishing is set, high finishing operation cannot be set even if the high finishing button 15a is pressed. Next, the operation is started by pressing the start switch 12. When the power is turned on again after the operation is finished, the high finish lamp 58 is turned on or off according to the contents of the setting presence / absence memory 59.

It is an external view which shows the drum type washing-drying machine of this invention. It is a perspective view which cut | disconnects a part of housing | casing of the drum type washing machine of this invention, and shows an internal structure. It is a rear view which removes the back cover of the drum type washing machine of the present invention, and shows an internal structure. It is a side view which shows the internal structure of the drum type washing machine of this invention. It is a top view which cut | disconnects the upper part of the housing | casing of the drum type washing machine of this invention, and shows an internal structure. It is a block diagram of the control system of the washing and drying machine shown in FIG. It is a front view of the outer tank cover which provided the warm air blowing outlet. It is AA sectional drawing of the warm air blower outlet in FIG. It is an experimental result of the sensory evaluation value of the finish of the clothing after a wind speed and drying. It is an apparatus for measuring the flow pressure characteristic of the blower unit. It is a photograph which shows a sensory evaluation value and the finishing condition of clothing. It is a schematic diagram when the high-speed wind blown from the nozzle hits clothing. It is a photograph which shows an example of the drum volume of a clothes dryer, and the clothing finishing state after drying. It is a flowchart which shows a part of control process which the microcomputer in the controller of the control system shown in FIG. 6 performs. It is explanatory drawing of the operation panel shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 2 Outer tub 2a Intake port 2d Outer tub cover 3 Washing / dehydration tub 4, 28a Motor 6 Operation panel 8 Drying filter 9 Door 16 Water supply solenoid valve 27 Filter duct 28 Blower unit 28b Fan case 29 Drying duct 31 Heater 32 Temperature Air outlet 32d Nozzle 33 Intake duct 38 Control device

Claims (2)

In a washing / drying machine having a drying operation, which includes a rotating drum in which clothing is stored, a motor that drives the rotating drum, a casing that supports the rotating drum, and an operation unit for selecting an operation course.
During the drying operation, there is provided means for directly blowing air on the clothes accommodated in the rotating drum, and the wind blown by this means is a predetermined air volume set to stretch the wrinkles of the accommodated clothes and The wind speed,
The operation unit includes a button for selecting a driving course, a display lamp for clearly indicating the driving course, a button for setting necessity of operation of the means for blowing the wind, and a storage means for storing the setting. A washing and drying machine comprising: means for determining whether or not the means for blowing air during the drying operation is necessary based on the contents of the storage means. 2. The washing / drying machine according to claim 1, wherein the operation unit includes a display lamp that clearly indicates that the operation of the air blowing means is selected based on the contents of the storage means .

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