JPH11104390A - Washing and drying machine and its drying method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an energy saving washing and drying machine with high finishing quality by putting hot air evenly in contact with whole washing in a washing and spindrying basket to improve drying efficiency and drying the washing without causing wrinkling and drying irregularity. SOLUTION: A washing and drying machine has a heater 4 to supply hot air, a temperature detector 25 to detect an exhaust temperature, a rotating number detector 26 to detect the rotating number of a spindle pulley 10 to drive a washing and dewatering spindrying basket 15 and a rotary blade 19, a rib 28 provided on the rotary blade 19 to stir washing 18 and hot air, a vane 30 to send the hot air in a fixed direction and a vent hole 29 to exhaust the hot air, and a controller 20 to drive and control the washing and spindrying basket 15 and the rotary blade 19 and control the heater 4 in accordance with the output of the rotating number detector 26 and the output of the temperature detector 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing / drying machine which sends warm air into a washing and dewatering tub and alternately rotates a rotor and a washing and dewatering tub to dry laundry, and a method for drying the same.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open No. 1-268593 discloses a washing / drying machine having a drying process in which warm air generated from a heating device and a blower is fed into a washing / dewatering tub to rotate the washing / dewatering tub to dry the laundry. No. 6,086,045. FIG.
1 is a structural diagram of a washing / drying machine disclosed in Japanese Patent Application Laid-Open No. 1-268593. In FIG. 5, 1 is an outer box, 2 is an outer tub disposed in the outer box 1, and 3 is a washing and dewatering tub for heating air generated by a heating device 4 and a blower 5 disposed on the inner bottom of the outer box 1. Flexible tube guiding to the upper opening of the
Reference numeral 8 denotes a blowing nozzle that is mounted on the distal end of the flexible tube 3 and blows out hot air, 6 denotes a waterproof plate provided on the upper peripheral edge of the outer tub 2, 7 denotes a motor disposed on the outer bottom of the outer tub 2, 8 denotes A belt for transmitting the rotational drive of the motor 7 from the motor pulley 9 to the main shaft pulley 10, a clutch 11 for switching between transmitting the rotation from the speed reducer 12 to the washing and dewatering tub or transmitting the rotation to the rotating blades, and an outer clutch 13 A drain valve for controlling the drainage of the washing liquid to the outside from a drain hose 14 attached to the lower end of the tub 2; 15, a rotatable washing / dewatering tub provided in the outer tub 2;
, A dehydration hole formed in the wall surface of the washing and dewatering tub 15, and 18 a dehydration hole formed in the washing and dewatering tub 1.
The laundry contained in 5 and 19 are rotating blades disposed on the inner bottom of the washing and dewatering tub 15.

In such a configuration, in the drying step after the washing step and the dehydrating step, the washing and dewatering tub 15 is rotated at a high speed, and the warm air generated from the heating device 4 and the blower 5 is supplied through the flexible tube 3 to the washing and dehydrating step. It is guided to the upper opening of the dewatering tank 15. Then, the warm air flows downward of the washing and dewatering tub 15 and comes into contact with the laundry 18 so that the laundry 1
8 is dried. As a result, the warm air becomes a humid air flow, passes through the dewatering hole 17, and is exhausted out of the outer case 1 through the drainage hose 14 through the space between the outer tub 2 and the washing and dewatering tub 15.

[0004]

The conventional washing and drying machines are:
The laundry comes into contact with warm air while being stuck to the inner wall surface of the washing and dewatering tub by centrifugal force generated by rotation of the washing and dewatering tub. In such a drying method, the surface of the laundry directly contacted by the warm air has a very large amount of water evaporation. However, in the laundry in a stacked state, it is difficult for warm air to flow in the vicinity of the central portion of the laundry and the wall of the washing and dewatering tub. For this reason, there is a problem that the drying time becomes long because the amount of water evaporating from the laundry is small, and the drying efficiency is very poor. In addition, when the laundry is dried while being stuck to the inner wall surface of the washing and dewatering tub, there is a problem that the finished quality of the laundry is poor, such as wrinkles and uneven drying. In addition, since the rotational driving force of the washing and dewatering tub has a large moment of inertia,
Operating the washing and spin-drying tub for a long time has a problem that the power consumption increases and the electricity cost increases, and operating the washing and spin-drying tub for a long time has a problem in terms of noise.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the drying efficiency can be remarkably improved by uniformly contacting warm air with the entire laundry in the washing and dewatering tub.
Another object of the present invention is to provide a high-quality, energy-saving and low-noise washing / drying machine that dries laundry without causing wrinkles and uneven drying, and a method for drying the washing / drying machine.

[0006]

A washing and drying machine according to the present invention comprises: an outer tub fixed to an outer box; a washing and dewatering tub rotatably supported in the outer tub and having a dewatering / venting hole; A rotating blade provided in the washing and dewatering tub for stirring the laundry, a heating and blowing means for supplying warm air to the washing and dewatering tub, and an exhaust passage for discharging the warm air from the dehydration and vent hole; In the washer-dryer provided with, provided on the rotor,
Agitating means for agitating the warm air sent into the washing and dewatering tub and sending it out in a predetermined direction; controlling a driving means for driving the washing and dewatering tub and the rotating blades; and controlling the heating and blowing means. And a controller that performs the control.

The stirring means protrudes from the upper surface of the impeller, a plurality of ribs extending radially from the center of the impeller toward the outer edge, and the stirring means protrudes from the lower surface of the impeller. A plurality of blades extending radially from the center to the outer edge, and a plurality of ventilation holes penetrating the rotor.

The control section includes a wing control section for rotating the rotary wing clockwise / leftward, a tub control section for controlling the rotation of the washing / washing / drying tub in one direction, a heating / blowing means, the wing control section, and A central control unit for controlling the tank control unit.

Also, an outer tub fixed to the outer box, a washing and dewatering tub rotatably supported in the outer tub and having a dewatering / venting hole, and a laundry provided in the washing and dewatering tub for stirring the laundry. Rotating wings and heating /
In a method for drying a washing / drying machine provided with an air blowing means and an exhaust path for discharging the warm air from the dehydrating / venting hole, the washing blade and the rotating blade are alternately rotated clockwise and counterclockwise. An unwinding and drying step in which the laundry stuck to the inner wall surface is scraped and dried by a rib provided on the rotor, and the washing and dewatering tub and the rotor are rotated synchronously,
A tub rotation drying process for drying laundry while rotating it,
A rotating blade rotating / drying step of stopping rotation of the washing and dewatering tub, rotating the rotating blade in one direction, diffusing warm air generated by ribs and blades of the rotating blade, and drying the laundry.

[0010]

FIG. 1 is a structural diagram showing an embodiment of a washing / drying machine according to the present invention, and FIG. 2 is a block diagram showing a configuration of a control section of FIG. In the figure, the same reference numerals as those in the conventional example indicate the same or corresponding parts, and the description will be omitted. In FIG. 1, reference numeral 20 denotes a control unit for controlling the number of rotations and the rotation time of the motor 7 accommodated in a top cover 21 disposed on the upper part of the outer case 1; 22, an intake hole formed at the bottom of the outer case 1; Is an exhaust hole formed in the upper wall surface of the outer box 1, 24 is a flexible exhaust duct communicating with the uppermost part of the space between the outer tub 2 and the washing and dewatering tub 15, and 25 is between the outer tub 2 and the washing and dewatering tub 15. A temperature detector 26 disposed at the upper part of the space is a rotation speed detector for detecting the rotation speed of the main shaft pulley 10. The agitating means protrudes from the upper surface of the rotor 19 and has a plurality of ribs 28 extending radially from the center of the rotor toward the outer edge.
And a plurality of blades 30 protruding from the lower surface of the rotating blade 19 and radially extending from the center of the rotating blade toward the outer edge, and a plurality of ventilation holes 29 penetrating the rotating blade 19.
The clutch 11 is the same as that of the conventional example. When the clutch 11 operates, the rotation of the main shaft pulley 10 is directly transmitted to the washing and dewatering tub 15. When the clutch 11 does not operate, the rotation of the main shaft pulley 10 is reduced. And transmitted to the rotary wing 19 via the The driving means is a motor 7, a main shaft pulley 10,
It comprises a speed reducer 12 and the like.

FIG. 2 is a block diagram showing the configuration of the control unit 20. In the figure, reference numeral 31 denotes a motor right / left rotation means 32 for executing right / left rotation of the rotary wing 19, and a timer 33.
Is a wing control unit that performs control based on the set time. 26 is a rotation speed detector for detecting the rotation speed of the main shaft pulley 10, 34
Is a clutch operating means for transmitting the rotational drive of the motor 7 to the washing and spin-drying tub 15; 35 is a motor right rotating means for rotating the motor 7 clockwise; 36 is a clutch operating means 34; Output and timer 33
Is a tank control unit that controls the driving of the motor right rotation means 35 at a predetermined number of revolutions based on the set time. Reference numeral 37 denotes a central control unit that controls the heating device 4, the blower 5, the blade control unit 31, and the tank control unit 36 based on the output of the temperature detector 25.

Next, the drying operation of the washing and drying machine in the embodiment will be described. First, the distribution route of hot air is shown in Fig. 1.
As shown in FIG. 3, the external air sucked through the air inlet 22 formed in the bottom of the outer box 1 is supplied to the heating device 4 and the blower 5.
As a result, warm air is generated, and the warm air is blown from the flexible tube 3 to the upper opening of the washing and dewatering tub 15 through the blowing nozzle 28. Next, the warm air becomes an air flow directed downward to the washing and dewatering tub 15 by a fan action due to the rotation of the lip 28 formed on the rotary wing 19 and the blade 30, and the warm air causes the washing and dewatering by the air flow. The water diffuses into the water tub 15 and contacts the laundry 18 to evaporate the water. The fan action caused by the rotation of the lip 28 and the blades 30 causes the hot humid air to escape from the rotary blade ventilation hole 29 to the outer bottom of the washing and dewatering tub 15 or to escape through the dewatering hole 17 to be removed from the outer tub. The space between the space 2 and the washing / dewatering tub 15 goes upward from below. Then, the hot air having a high humidity is discharged from the flexible exhaust duct 24 to the outside through the exhaust holes 23. The waterproof plate 6 and the balancer 16
The space between the upper surface of the dewatering tub 15 and the balancer 16 is set as a minimum gap so that the waterproof plate 6 and the balancer 16 do not come into contact with each other so that the pressure loss is maximized.

FIG. 3 is a diagram showing an example of a change in the temperature of the hot air, which is obtained by a temperature detector 25 provided in a hot air flow path above the space between the outer tub 2 and the washing and dewatering tub 15. It was done. In FIG. 3, the preheating period (line A in FIG. 3) in which the temperature of the warm air gradually rises after the start of drying, and then a stable period in which the temperature is stabilized (line B in FIG. 3), and further drying proceeds. It consists of a rising period (line C in FIG. 3) in which the moisture contained in the laundry 17 decreases and the temperature rises. In the course of the rising period, for example, either the absolute value of the temperature or the amount of change from the initial temperature is selected and used as a criterion for determining the degree of drying of the laundry 18 described later.

Next, the operation of the washing and drying machine will be described with reference to a flowchart showing the flow of the drying process of the control unit 20 shown in FIG. 5 and FIGS. First, after the washing and rinsing steps of the washing / drying machine have been completed, the process proceeds to the dehydration step (step S100). Then, the dehydration process (Step S1)
00), that is, after the laundry 18 is stuck to the inner wall surface of the washing and dewatering tub 15, warm air is blown from the flexible tube 3 to the blowing nozzle 28 by entering the drying process (step S200). Washing and dewatering tub 1
5 is blown out to the upper opening.

Next, the process proceeds to unpacking and drying (step S200), in which the rotating blade 19 is alternately rotated clockwise and counterclockwise at a rotation speed of 130 rpm at ON / OFF cycles of 0.5 seconds each. Reciprocate for a minute. The laundry 18 (A in FIG. 1) stuck on the inner wall surface of the washing and dewatering tub 15 is scraped off by touching the lip 28 by this small rotation of the rotary wings 19 and The left and right sides are randomly exchanged and unraveled, and the hot air uniformly contacts the unraveled laundry 18 (B in FIG. 1).

Next, the operation proceeds to tank rotation drying (step S201). After the clutch operation means 34 is operated, the operation of the motor right rotation means 35 is controlled based on the output of the rotation speed detector 26 and the set time of the timer 33. You. Thus, the washing and dewatering tub 15 rotates at a rotation speed of, for example, 300 rpm for one minute. At this time, the laundry 18 is lightly stuck to the inner wall surface of the washing and dewatering tub 15 by centrifugal force (FIG. 1).
The warm air comes into contact with the laundry 18 by the diffusion effect of the rotating action of the rotating wings 19, which are synchronized with the washing / dewatering tub 15 and rotate integrally with the washing / dewatering tub 15.

Next, rotary blade rotary drying (step S202)
The clutch operation means 34, the motor right rotation means 35
Operation is stopped. The laundry 18 is the washing and dewatering tub 15
It is in a state of sticking to the inner wall surface. In this state, rotor 1
9 rotates at 130 rpm in one direction to the right for 5 minutes. Since the rotor 19 rotates in one direction, the washing and dewatering tub 1
The laundry 18 lightly stuck to the inner wall surface of 5 is not scraped off, and the cavity is kept on the surface of the rotary wing 19 without the laundry 18 being accumulated. A lip 28 formed on the rotor 19;
And a downward airflow is generated in the washing and dewatering tub 15 by a fan action caused by the rotation of the blades 30,
The hot air is diffused by this air flow, and comes into contact with the laundry 18 stuck to the inner wall surface of the washing and dewatering tub 15 to evaporate moisture. The fan action caused by the rotation of the lip 28 and the blades 30 causes the hot humid air to escape from the rotary blade ventilation hole 29 to the outer bottom of the washing and dewatering tub 15 or to escape through the dewatering hole 17 to be removed from the outer tub. The space between the space 2 and the washing / dewatering tub 15 goes upward from below. Then, the hot air having a high humidity is discharged from the flexible exhaust duct 24 to the outside through the exhaust holes 23.

Next, the procedure proceeds to the determination of the degree of drying (step S203), and the degree of drying of the laundry 18 is determined based on the output of the temperature detector 25 for detecting the exhaust gas temperature. When the absolute value of the output of the temperature detector 25 or the amount of change from the initial value is equal to or smaller than a predetermined value, it is determined that the drying is not completed, that is, NO. Then, unpack and dry (step S2
Returning to (00), the same operation as described above is performed. Also,
Absolute value of output of temperature detector 25 or unit time (minute)
When the amount of change in the output per hit is equal to or greater than a predetermined value, drying is determined to be completed, that is, YES is determined. Thus, the operations of the heating device 4, the blower 5, and the motor 7 are stopped, and a series of drying steps is completed (Step S300).

The number of rotations of the washing and dewatering tub 15 and the number of rotations of the rotary blade 19 are not limited to the right / left rotation, but may be appropriately designed. Further, in the embodiment, the hot air containing moisture is exhausted, but the present invention is not limited to this.
A configuration in which warm air containing water is cooled to condense and recover the water may be used. Further, a configuration may be adopted in which an air flow generated by rotation of the washing and dewatering tub or the rotating blade is passed through a heater to obtain warm air without using a blower.

With the above configuration, only the rotor 19 having a small moment of inertia is rotated in one direction, and a diffused air flow is generated by the fan action due to this rotation. Evaporation and diffusion of water in the object 18 can be promoted. In addition, the rotating blade 19 is alternately rotated clockwise and counterclockwise to rotate the laundry 18.
To solve. Due to these, the drying efficiency of the laundry 18 is high,
In addition, wrinkles and uneven drying of the laundry 18 do not occur, that is, power consumption with high finishing quality is reduced, and drying with low noise can be performed.

[0021]

Since the present invention is configured as described above, it has the following effects.

A washing / drying machine according to the present invention comprises: an outer tub fixed to an outer box; a washing and dewatering tub rotatably supported in the outer tub and having a dewatering / venting hole; A washing / drying machine provided with a rotating blade provided in the washing machine for stirring the laundry, heating / blowing means for supplying warm air to the washing and dewatering tub, and an exhaust passage for discharging the warm air from the dewatering / vent hole. A stirring means provided on the rotating blade for stirring the hot air sent into the washing and dewatering tub and sending it in a predetermined direction; and a drive for driving the washing and dewatering tub and the rotary wing. Means and a control unit for controlling the heating / blowing means, the warm air uniformly contacts the whole of the laundry, and the evaporation and diffusion of the moisture of the laundry can be promoted, and the drying efficiency of the laundry can be improved. High and wrinkled and dry Does not occur, we tried to reduce the high finishing quality power consumption, and can be dried in low noise.

The stirring means protrudes from the upper surface of the impeller, a plurality of ribs extending radially from the center of the impeller toward the outer edge, and the stirring means protrudes from the lower surface of the impeller. A plurality of blades extending radially from the center to the outer edge and a plurality of ventilation holes penetrating the rotor, so that a diffused air flow is generated, and warm air uniformly contacts the entire laundry. Thus, the evaporation and diffusion of the water content of the laundry can be promoted.

The control section includes a wing control section for rotating the rotary wing clockwise and counterclockwise, a tub control section for rotationally controlling the washing / washing / drying tub in one direction, a heating / blowing means, the wing control section, With the central control unit that controls the tank control unit,
The laundry can be released and the drying efficiency of the laundry can be increased.

A method for drying a washing and drying machine according to the present invention includes an outer tub fixed to an outer box, a washing and dewatering tub rotatably supported in the outer tub and having a dewatering / venting hole, and a washing and dewatering tub. A rotating blade provided in the dewatering tub for stirring the laundry, a heating / blowing means for supplying warm air to the washing and dewatering tub, and an exhaust passage for discharging the warm air from the dewatering / vent hole. In the drying method of the washing and drying machine, the clockwise and counterclockwise rotations of the rotor are alternately repeated, and the laundry stuck to the inner wall surface of the washing and dewatering tub is scraped off by a rib provided on the rotor and dried. A washing and dewatering step of rotating the washing and dewatering tub and the rotating blades synchronously to rotate and dry the laundry while rotating the laundry; To the rotor blades and blades And a rotating blade rotating and drying step of drying the laundry by diffusing the generated hot air, so that the hot air can evenly contact the whole of the laundry and promote the evaporation and diffusion of the moisture of the laundry. It is possible to achieve high drying efficiency of the laundry, avoid wrinkles and uneven drying of the laundry, reduce power consumption with high finishing quality, and perform low-noise drying.

[Brief description of the drawings]

FIG. 1 is a structural diagram showing an embodiment of a washing and drying machine according to the present invention.

FIG. 2 is a block diagram showing a control unit of the embodiment of the washing and drying machine according to the present invention.

FIG. 3 is a diagram showing an example of exhaust temperature characteristics.

FIG. 4 is a flowchart of the control unit of the embodiment of the washing and drying machine according to the present invention.

FIG. 5 is a structural view showing a conventional washing and drying machine.

[Explanation of symbols]

1 outer box, 2 outer tank, 4 heating device, 5 blower, 15
Washing and dewatering tub, 20 control units, 28 ribs, 29 vents, 30 blades, 31 wing control units, 36 tub control units, 3
7 Central control unit.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI D06F 58/28 D06F 58/28 Z (72) Inventor Masaji Hisugino 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Co., Ltd. In-company (72) Inventor Shinsuke Ise 2-3-2 Marunouchi, Chiyoda-ku, Tokyo, Japan Mitsubishi Electric Corporation (72) Inventor Kazuhiko Manya 2-3-2, Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (72) Inventor Hideyo Uchida 1-1-1, Yamate, Funabashi City, Chiba Prefecture, Japan Nippon Steel Corporation (72) Inventor Katsunori Ishii 1-1-1, Yamate, Funabashi City, Chiba Prefecture, Japan Nippon Steel Corporation (72 ) Inventor Masami Yorita 1-1-1, Yamate, Funabashi-shi, Chiba Pref. Japan Incorporated Tetsuya Kitamura Tetsuya Kitamura 1-1-1, Yamate, Funabashi-shi, Chiba Pref. House (72) inventor Kunio Inose Funabashi, Chiba Prefecture Yamate, 1 Chome, Japan Tetsu Ken within Co., Ltd. (72) inventor Mamoru Katano Funabashi, Chiba Prefecture Yamate, 1 Chome, Japan Tetsu Ken Co., Ltd. in

Claims (4)

[Claims] 1. An outer tub fixed to an outer box, a washing and dewatering tub rotatably supported in the outer tub and having a dewatering / venting hole, and a laundry provided in the washing and dewatering tub for stirring the laundry. A washing / drying machine provided with a rotating wing, a heating / blowing means for supplying warm air to the washing and dewatering tub, and an exhaust passage for discharging the warm air from the dewatering / vent hole. A stirring means for stirring the hot air sent into the washing and dewatering tub and sending it in a predetermined direction; a driving means for driving the washing and dewatering tub and the rotating blades; and the heating and blowing means. A washing and drying machine comprising: 2. The stirring means is provided on the upper surface side of the rotor, and is agitated.
A plurality of ribs extending radially from the center of the rotor toward the outer edge; a plurality of blades projecting from the lower surface of the rotor and extending radially from the center of the rotor toward the outer edge; The washing and drying machine according to claim 1, further comprising a plurality of ventilation holes penetrating through the rotor. 3. A control unit includes: a wing control unit for rotating the wings right / left; a tub control unit for controlling the rotation of the washing / washing / dewatering tub in one direction; a heating / blowing unit; The washing / drying machine according to claim 1, further comprising a central control unit for controlling the tub control unit. 4. An outer tub fixed to an outer box, a washing and dewatering tub rotatably supported in the outer tub and having a dewatering / venting hole, and a laundry provided in the washing and dewatering tub for stirring the laundry. A washing / drying method, comprising: a rotating wing, a heating / blowing means for supplying warm air to the washing and dewatering tub, and an exhaust passage for discharging the warm air from the dewatering / vent hole. An unwinding and drying step of alternately repeating clockwise and counterclockwise rotation of the wings, scraping and drying the laundry stuck on the inner wall of the washing and dewatering tub with ribs provided on the rotating wings, A tub rotating and drying step in which the dehydration tub and the rotating blades are rotated synchronously and the laundry is dried while rotating, and the rotation of the washing and dewatering tub is stopped, the rotating blades are rotated in one direction, and ribs of the rotating blades are rotated. Dry the laundry by diffusing the warm air generated by the blades A method for drying a washing / drying machine, comprising: