CN110735278A

CN110735278A - Vertical washing and drying machine

Info

Publication number: CN110735278A
Application number: CN201910584174.XA
Authority: CN
Inventors: 川村圭三; 曾我丈; 菅原道太; 高中健太; 渡边光; 小池裕之; 林祐太朗; 本多武史
Original assignee: Hitachi Global Life Solutions Inc
Current assignee: Hitachi Global Life Solutions Inc
Priority date: 2018-07-19
Filing date: 2019-07-01
Publication date: 2020-01-31
Anticipated expiration: 2039-07-01
Also published as: TWI726358B; TW202007809A; JP2020010863A; CN110735278B

Abstract

The invention provides a vertical washing and drying machine which can restrain the generation of wrinkles and obtain good drying finishing effect. The vertical washing and drying machine comprises a washing tank for storing clothes, a rotating blade arranged at the bottom of the washing tank, an outer tank for storing washing water and internally containing the washing tank, a driving mechanism for driving the washing tank and the rotating blade to rotate, and a drying mechanism for blowing warm air into the washing tank, wherein an outlet for blowing the warm air from the drying mechanism is arranged on the upper surface of the washing tank, and the fold of the clothes is unfolded by blowing the warm air with a high speed with the product of the air volume and the air speed of the clothes in the washing tank being more than 1.6 (N).

Description

Vertical washing and drying machine

Technical Field

The invention relates to a vertical washing and drying machine with the following functions: the laundry is washed and rinsed by rotating the rotary blades, and the laundry is dehydrated by rotating the washing tub (inner tub), and then the laundry is dried by blowing warm air or dry air into the washing tub.

Background

A vertical washing and drying machine comprises a rotary blade provided at the bottom of a washing tub for storing clothes, and an outer tub for rotatably supporting the rotary blade, wherein the rotary blade is rotated forward and backward to wash the clothes, and a blower fan blows warm air heated by a heater to the clothes in a drying process after the washing tub is rotated at a high speed to perform dehydration.

For example, in order to dry clothes with less wrinkles and damage, in patent document 1, blows high-pressure warm air from a blow-out nozzle protruding from the center of the top surface of the upper part of the dewatering tub to the center part of the vibration exciter while stirring by the vibration exciter, and in patent document 2, in order to spread wrinkles of clothes, when the clothes are lifted upward while rotating the rotary drum and fall down by gravity, high-speed warm air having a product of the air volume and the air speed of 0.8(N) or more is blown.

Documents of the prior art

Patent document 1: japanese laid-open patent publication No. H09-774

Patent document 2: japanese patent laid-open publication No. 2011-

Disclosure of Invention

Problems to be solved by the invention

In such a vertical washing and drying machine, the relationship between the air volume and the air speed of the high-pressure warm air blown from the nozzle and wrinkles is not defined. Further, in a state where the laundry is located at the bottom of the washing tub as in the vertical washing and drying machine, the movement of the laundry is largely different from that of the drum-type washing and drying machine, and thus the relationship between the amount of warm air blown, the wind speed, and the wrinkles obtained in the drum-type washing and drying machine cannot be applied.

The invention aims to provide vertical washing and drying machines which can reduce the wrinkles of clothes and obtain good drying effect.

In order to achieve the above object, a vertical washer-dryer according to the present invention includes a washing tub for storing laundry, a rotary blade provided at a bottom of the washing tub, an outer tub for storing washing water and having the washing tub built therein, a driving mechanism for rotationally driving the washing tub and the rotary blade, and a drying mechanism for blowing warm air into the washing tub,

an outlet port for blowing out the warm air from the drying means is provided on the upper surface of the washing tub, and the wrinkles of the laundry are developed by blowing the warm air at a high speed, in which the product of the air volume and the air speed of the warm air is 1.6(N) or more toward the laundry in the washing tub.

And blowing high-speed warm air with the product of the air volume and the air speed of 1.6(N) to 7.0(N) to the clothes in the washing tank to spread wrinkles of the clothes.

And, the air quantity of the air blown to the clothes in the washing tank is about 0.9 cubic meter per minute and the high-speed warm air with the wind speed of more than 90 meters per second, thereby spreading the wrinkles of the clothes.

And, the air volume of the air blown to the clothes in the washing tank is about 0.9 cubic meter per minute and the air speed is 90 meters per second or more, and the air volume of the air is about 2.3 cubic meters per minute and the air speed is 150 meters per second or less, thereby spreading the wrinkles of the clothes.

The effects of the invention are as follows.

The vertical washing and drying machine thus constructed spreads the laundry by the wind to unfold the wrinkles of the laundry, thereby achieving a drying finish effect with less wrinkles.

Drawings

Fig. 1 is an external perspective view showing a washing and drying machine according to an embodiment of the present invention.

Fig. 2 is a longitudinal sectional view of the washing and drying machine shown in fig. 1.

Fig. 3 is a cross-sectional view showing a section a-a of the washing and drying machine shown in fig. 2.

Fig. 4 is an external perspective view showing a structure of a rotary blade in a washing and drying machine according to example of the present invention.

Fig. 5 is a block diagram showing a configuration of a control device in a washing and drying machine according to th embodiment of the present invention.

Fig. 6 is a flowchart illustrating a portion of a control process performed by a microcomputer used in a control device in a washing and drying machine according to embodiment of the present invention.

Fig. 7 is a flowchart illustrating a portion of a control process performed by a microcomputer used in a control device in a washing and drying machine according to embodiment of the present invention.

Fig. 8 is a vertical sectional view showing a structure for blowing warm air from an upper portion of a washing tub in a washing and drying machine according to example of the present invention.

Fig. 9 is a flowchart showing details of a drying process of a control process executed by a microcomputer used in a control device of a washing and drying machine according to embodiment of the present invention.

Fig. 10 is a schematic view of a case where high-speed wind blown out from the warm air outlet blows to clothes.

Fig. 11 is an experimental result of the finish effect sensory evaluation values of the blowing force and the finish effect of the laundry after drying in terms of the amount of cloth.

Fig. 12 is a photograph showing the sensory evaluation value and the completion of the clothing.

In the figure:

1-an outer frame, 2-a top cover, 2 a-a clothes inlet, 3-an outer cover, 3 a-a handle, 4-a water supply solenoid valve, 5-a power switch, 6-switches, 7, 25-a display, 8-an operation panel, 9-a washing tank, 9a, 9 b-a through hole, 9 c-a fluid balancer, 10-an outer tank, 10 b-a water vent, 11-a rotary blade, 11 a-a bump, 11 c-a through hole, 11 h-an inclined surface, 12-a clutch mechanism, 13-a washing dehydration drive motor, 14-a control device, 15-a drain valve, 16-a circulation pump, 17-a circulation pipe, 18-a foreign matter trap, 19-an air blowing fan, 20-a heater, 21-a water level sensor, 21 a-an air trap, 21 b-a pipe, 22-a drying passage, 22 a-a dehumidifying mechanism, 23-a handle, 23-a drain hose, 26-a temperature sensor, 27-vibration sensor, 28-detergent, softener container, 28 a-detergent, softener inlet, 29a, 29b, 29c, 29d, 29 f-corrugated pipe, 30-circulating water cover, 31-tank cover, 31 a-clothes inlet, 31 b-rear surface, 33-circulating water inlet, 34-nozzle, 40-microcomputer, 41-operation button input circuit, 42-driving circuit, 43-buzzer, 51-warm air, 54-warm air outlet, 56-clothes.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, but the present invention is not limited to the embodiments below, and various modifications and applications are included in the technical concept of the present invention.

Fig. 1 is an external perspective view of a washing and drying machine 100, and fig. 2 is a longitudinal sectional view of the washing and drying machine 100. Fig. 3 is a cross-sectional view showing a section a-a of the washing and drying machine shown in fig. 2. Fig. 4 is an external perspective view showing the structure of the rotary blade. The washing and drying machine 100 includes a cabinet 1 constituting an outer contour, a power switch 5, a detergent/softener container 28 are built in a front side of a top cover 2 positioned at an upper portion of the cabinet 1, and components related to water supply and drying such as a water supply solenoid valve 4, a heater 20, and an air blowing fan 19 are built in a rear portion. An outer cover 3 is provided to the cabinet 1 so as to cover the laundry inlet 2 a. A handle 3a and an operation panel 8 including an operation switch 6 and a display 7 are provided on the front side of the outer cover 3, and when the handle 3a is pulled upward, it is folded at the center and opened as shown by the two-dot chain line in fig. 2. The operation panel 8 is electrically connected to a control device 14 provided at the bottom of the case 1.

The washing tub 9 for storing the laundry 56 has a plurality of small through holes 9a for water passage and ventilation in the outer peripheral wall, a plurality of through holes 9b for water passage and ventilation in the bottom wall, a fluid balancer 9c in the upper edge part, and a rotary blade 11 for stirring the laundry 56 rotatably provided in the bottom part, the rotary blade 11 has a gentle inclined surface 11h and a raised part 11a which repeat upward component force on the laundry 56 put on the rotary blade 11 by rotation, and a plurality of small through holes 11c for water passage and ventilation in the inclined surface 11h, and the washing tub 9 and the rotary blade 11 are driven to rotate independently or by bodies by a driving mechanism composed of a clutch mechanism 12 and a washing/dehydrating drive motor 13.

An outer tub 10 having a built-in washing tub 9 is suspended substantially at the center of an outer frame 1 by engaging four directions of the outer tub 10 with four support rods (not shown) via a buffer device (not shown) and supporting the outer tub 10 in a balanced manner, wherein the four support rods are engaged with corner plates (not shown) provided at four corners of an upper end portion of the outer frame 1 and suspended therefrom, a driving mechanism is installed at a lower portion of the outer tub 10, the driving mechanism incorporates a washing/dewatering driving motor 13 using an inverter driving motor or a reversible capacitor-split-phase single-phase induction motor, a clutch mechanism 12, and a planetary gear reduction mechanism, and has a driving function of controlling the washing/dewatering driving motor 13 and the clutch mechanism 12 to release the washing tub 9 so that the washing tub 9 is stationary or freely rotatable, executing a washing driving mode of repeatedly rotating the rotary blade 11 in the forward and reverse directions, and a dewatering driving mode of rotating the washing tub 9 and the rotary blade 11 in the same direction, and a water level sensor 27 for detecting vibration of the outer tub 10 at the side outer tub 10 and a pipe 21 for detecting water level and a pressure of the outer tub 10 and storing water therein, 21a for detecting water accumulation.

A laundry inlet 31a is provided in a portion separated by about 2/3 from the front side of the tub cover 31 provided on the upper surface of the outer tub 10, and a water supply inlet (not shown) and a circulating water inlet 33 are provided on the rear surface 31 b. In addition, a detergent/softener inlet 28a is provided in front of the tank cover 31. An inner lid 23 is openably and closably attached to the laundry inlet 31a by a hinge 23 b. The handle 23a is lifted upward to unlock the inner lid 23 (not shown), and the inner lid is opened as shown by the chain line in the figure, and the handle 23a is pushed downward to lock the inner lid. The rear surface 31b is provided with a warm air outlet 54 and is connected to the heater 20 via a bellows 29 b. The warm air outlet 54 is an outlet whose flow path area gradually decreases toward the bottom surface of the washing tub 9, and the front end thereof is provided to protrude from a fixed surface with the rear surface 31 b. A space is provided around the protruding warm air outlet 54, the space guiding the air in the washing tub 9 along the front end of the warm air outlet 54 by the outer periphery of the warm air outlet 54. In order to smoothly carry out the taking out and putting in of the laundry 56, the laundry inlet 31a needs to be enlarged. Therefore, the warm air outlet 54 is provided on the outer peripheral side of the washing tub 9.

The drying mechanism for drying the laundry 56 is constituted by the blower fan 19, the heater 20, the drying passage 22, and the dehumidifying mechanism 22 a. The drying duct 22 is connected between the water/air passage opening 10b and the warm air blow-out opening 54. A dehumidifying mechanism 22a, a lint filter (not shown), an air blowing fan 19, a heater 20, and a temperature sensor 26 are provided in the middle of the drying duct 22. When the blower fan 19 is operated and the heater 20 is energized, warm air is blown from the warm air outlet 54 into the washing tub 9 through the bellows 29b, and the clothes 56 are heated to evaporate water. The air that becomes hot and humid is circulated in the following manner: flows out to the outer tub 10 through the through

holes

9a and 9b, is sucked into the drying duct 22 through the water passage vent 10b, is cooled and dehumidified by the cooling water flowing down along the dehumidifying mechanism 22a to become dry low-temperature air, is heated again by the heater 20, and is blown into the washing tub 9.

The

rubber bellows

29a, 29b, 29c, 29d, 29e, and 29f are used to connect the outer tank 10 of the vibration displacement, the tank cover 31, the drying duct 22 provided on the fixed side (the outer frame 1, the top cover 2, and the like), the water supply solenoid valve 4, the circulation pump 16, and the like.

The water supply solenoid valve 4 uses four connecting valves in this embodiment to supply water in four directions, is a washing water supply solenoid valve connected to the water supply inlet and supplying water into the washing tub 9, the second is a detergent water supply solenoid valve connected to the detergent input chamber of the detergent/softener container 28, the third is a softener water supply solenoid valve connected to the softener input chamber of the detergent/softener container 28, the detergent/softener container 28 is connected to the detergent/softener inlet 28a and supplies detergent/softener to the outer tub 10, and the fourth is connected to the dehumidifying mechanism 22a described below.

The circulation pipe 17 for the washing water is connected between a water vent 10b provided in the bottom of the outer tub and a circulating water inlet 33. A circulation pump 16 and a foreign matter trap 18 provided at the bottom of the body are provided in the middle of the circulation pipe 17, and a drain hose 24 is connected to the foreign matter trap 18 via a drain valve 15. When the circulation pump 16 is operated, the washing water in the outer tub 10 is transported from the water vent 10b provided in the bottom of the outer tub to the upper part of the outer tub 10 through the circulation pipe 17, flows into the circulation water cover 30 provided on the washing tub 9 side of the rear surface 31b from the circulation water inlet 33 of the rear surface 31b of the tub cover 31, and is then sprayed into the washing tub 9 from the spray nozzle 34.

Fig. 5 is a block diagram of a control unit of the washing and drying machine. The microcomputer 40 is connected to an operation button input circuit 41, the water level sensor 21, the temperature sensor 26, and the vibration sensor 27, the operation button input circuit 41 is connected to the

switches

6 and 6a, and the microcomputer 40 receives various information signals in the button operation, the washing process, and the drying process of the user. The output from the microcomputer 40 is connected to the drive circuit 42, and is connected to the water supply solenoid valve 4, the clutch 12, the drain valve 15, the circulation pump 16, the motor 13, the blower fan 19, the heater 20, and the like, to control opening and closing, rotation, and energization thereof. Further, a seven-stage light emitting diode display 25, a light emitting diode 7, and a buzzer 43 for notifying the user of the operating state of the washing machine are connected.

The microcomputer 40 is activated when the power switch 5 is pressed and the power is turned on, and executes a basic control processing routine of washing and drying shown in fig. 6 and 7. The control flow thereof is explained below.

Step S101

The state of the washing and drying machine is checked and initially set.

Step S102

The display 7 of the operation panel 8 is lighted up and displayed, and a washing/drying program is set in accordance with an instruction input from the operation button switch 6. In a state where no instruction input is made, a standard washing/drying course or a washing/drying course carried out last time is automatically set. For example, when the operation button switch 6b is instructed to be input, the high-effect-of-completion program for drying is set.

Step S103

The process is branched by monitoring an instruction input from the start switch 6a of the operation button switches 6 of the operation panel 8.

Step S104

The detergent amount detection process is performed by rotating the rotary blade 11 in directions while the washing tub 9 is stationary in a dry state before the supply of the washing water, and controlling the washing/dehydrating drive motor 13 and the clutch mechanism 12 in the drive mechanism so as to detect the amount of the laundry 56 based on the amount of the rotary load acting on the rotary blade 11 and to determine the appropriate amount of the detergent (detergent amount) based on the detected amount of the laundry.

The amount of the detergent is determined by referring to a preset comparison table of the amount of the cloth and the amount of the detergent. Specifically, in the configuration using the inverter drive motor as the washing/dewatering drive motor 13, the cloth amount is detected by detecting the arrival rotation speed at the time of supplying power for a predetermined time so as to rotate the washing/dewatering drive motor 13. In the configuration using the capacitor split phase single phase induction motor as the washing and dehydrating drive motor 13, the cloth amount is detected by detecting the inertia rotation deceleration characteristic after the power off in a state where the power is supplied so as to raise the washing and dehydrating drive motor 13 to the saturation rotation speed. Then, a preferable amount of the detergent is determined by referring to a preset comparison table of the amount of the cloth and the amount of the detergent.

The amount of the washing water is set so that the washing water is accumulated in the bottom of the outer tub 10 without exceeding the water level of the rotary blade 11 when the cloth amount is within the range of the predetermined cloth amount (proper amount). Then, the washing time is determined and set based on the detection result (cloth amount). When the cloth amount is not detected, a standard washing time is set.

Step S105

The determined amount of the detergent is displayed on the display 25 of the operation panel 8.

Step S106

The user puts the powder detergent and the liquid detergent of the displayed amount into the detergent putting-in chamber of the detergent and softener container 28, and then operates to close the outer cover 3, and the water of the powder detergent, the liquid detergent and the detergent water fed into the detergent putting-in chamber flowing with the detergent water falls down to the bottom of the outer tub 10 through the detergent and softener inlet 28 a.

Step S107

And stopping supplying water after the water supply reaches the detergent dissolving water level. The detergent dissolution water level is an amount of water sufficient to stir the supplied water and the detergent at the bottom of the washing tub 9 when the washing tub 9 is rotated in the subsequent detergent dissolution process (step S108), and the water level is set lower than the height of the lower surface of the rotary blade 11 (the laundry 56 is not wetted before the detergent is dissolved).

Step S108

The detergent dissolving process is performed by slowly rotating the washing tank 9 and the rotary blade 11 in directions, and the detergent dissolving process is performed by stirring the detergent-dissolved water fed to the bottom of the outer tank 10, the powder detergent, and the liquid detergent, at the bottom of the washing tank 9, thereby generating washing water having a high detergent concentration.

Step S109

The pre-washing is performed by intermittently stirring the rotary blade 11 in the forward and reverse rotation while the washing tub 9 is stationary, and by operating the circulation pump 16 in the forward and reverse rotation of the rotary blade 11, the detergent water in the bottom of the outer tub 10 is poured from the nozzle 34 onto the laundry 56, and at this time, since the high-concentration detergent water is scattered toward the laundry 56, the laundry 56 is uniformly impregnated by the permeation of the detergent, the oil of the high-concentration detergent water permeated into the laundry 56 has a high dissolving capacity, and the grease dirt such as sebum dirt is dissolved, and the effect of floating the dirt from the laundry 56 is very large, and a high cleaning force is obtained, and then, during the stop period of the rotary blade 11 and the circulation pump 16, supplies water so that the water level does not exceed the set water level by opening the detergent water supply solenoid valve and the washing water supply solenoid valve while referring to the detection signal of the water level sensor 21, and by repeating this operation a plurality of times, the laundry 56 is sufficiently immersed in the washing water and dispersed onto the rotary blade 11.

Step S110

In the main washing, firstly, the cloth amount is detected by the same method as described above, and the set washing time is corrected and set, and then, the circulation pump 16 is operated while the rotary blade 11 is rotated in the forward and reverse directions in a state where the washing tank 9 is kept still , and the washing water circulating for pouring the washing water accumulated in the bottom of the outer tank 10 from the nozzle 34 to the laundry 56 is agitated, and the laundry in the forward and reverse rotation of the rotary blade 11 is agitated in a state where the circulation pump 16 is stopped and the circulation of the washing water is stopped, and finally, the uniform agitation for rotating the rotary blade 11 in the forward and reverse directions is performed in a state where the circulation pump 16 is stopped and the circulation of the washing water is stopped, and then the main washing time is finished.

Step S111

In the rinsing with water stored times, the drain valve 15 is opened to drain the washing water stored in the bottom of the outer tub 10, and then the washing tub 9 and the rotary blade 11 are rotated in directions integrally to spin the washing water contained in the laundry 56, and the spin speed of the washing tub 9 and the rotary blade 11 during the spin-drying of the washing water is set to be the same as the spin speed (about 1000r/min) of the final spin-drying described below, and the spin-drying operation is performed to achieve a high spin-drying rate.

Thereafter, slowly rotates washing tub 9 in directions together with rotary vane 11 while closing drain solenoid valve 15, and supplies water by opening the washing water supply solenoid valve so that tap water is poured from the water spray nozzle to laundry 56 on rotary vane 11.

Next, while the rotation of the washing tub 9 and the rotary blades 11 is stopped, the rinsing water is supplied so that the water level at the bottom of the outer tub 10 does not exceed the set water level.

Next, similarly to the press washing agitation in main washing, the rinsing water circulation agitation rinsing is performed in such a manner that rotates rotary blade 11 forward and backward while washing tub 9 is stationary, and operates circulating pump 16 to pour the rinsing water accumulated in the bottom of outer tub 10 from nozzle 34 to clothes 56 on rotary blade 11.

Next, while the rotation of the rotary vane 11 and the operation of the circulation pump 16 are stopped, detects the level of the rinse water stored in the bottom of the outer tub 10, and supplies water so that the level does not exceed the set level.

Then, , rotating the rotary blade 11 in the forward and reverse directions while the washing tub 9 is stationary, operates the circulating pump 16 to pour the rinse water accumulated in the bottom of the outer tub 10 from the nozzle 34 to the laundry 56 on the rotary blade 11. like in the case of washing, the laundry 56 in the washing tub 9 is lined in the circumferential direction and the radial direction, and the rinse water is applied to the laundry 56 without fail, and the amount of the detergent is diluted.

Thereafter, in a state where circulation of the rinse water is stopped by stopping the circulation pump 16, uniform stirring is performed by continuing the forward and reverse rotations of the rotary blade 11.

Step S112

The second water storage rinsing is performed in addition to the control of introducing the softener introduced into the chamber into the bottom of the outer tub 10 by opening the softener water supply solenoid valve to supply water to the softener introduction chamber in the detergent/softener introduction container 28, and the other operations are performed in the same manner as the th water storage rinsing.

Step S113

In the final dewatering, the driving mechanism is operated to rotate the washing tub 9 and the rotary blade 11 in directions at a high speed of about 1000r/min with the drain solenoid valve 15 opened, thereby centrifugally dewatering the laundry 56 in the washing tub 9.

Step S114

It is checked whether or not the washing/drying program is set, and the processing is branched.

Step S115

When the washing and drying program is set, the drying is performed by circulating the air blowing fan 19, the warm air is blown into the washing tub 9 from the warm air blowing port 54 to heat the clothes 56 to evaporate the moisture, the air having a high temperature and a high humidity is sucked into the drying duct 22, the low temperature air having a high temperature and a high humidity is cooled and dehumidified by the cooling water flowing down through the dehumidifying mechanism 22a and is heated again by the heater 20 and then is blown into the washing tub 9, the air having a low temperature and a high humidity having a high humidity is cooled and dehumidified by the cooling water flowing down through the dehumidifying mechanism 22a, the air having a high temperature and a high humidity is cooled and dehumidified by the dehumidifying mechanism 22, the lint is captured by a lint filter (not shown), the drain solenoid valve 15 is opened during the drying, the cooling water flowing down through the drain hose 24 and the dehumidified cooling water flowing down through the dehumidifying mechanism 22a, is performed while the temperature of the warm air is monitored by the temperature sensor 26, and the drying is completed when the.

Fig. 8 is a vertical sectional view showing a structure for blowing the warm air 51 from the upper part of the washing tub 9, and fig. 9 is a flowchart showing control flows of examples of control processing executed by the microcomputer in the embodiment shown in fig. 8.

The detailed control flow of the drying step will be described below. Steps S101 to S114 in fig. 9 are the same as the control flows shown in fig. 6 and 7, and the description thereof is omitted.

In fig. 9, when the washing and drying process is not selected in step S114, the control flow is completed after the washing is completed, and in addition , the following steps are executed when the washing and drying process is not selected.

Step S200

In the drying step, the washing tub 9 is rotated at a high speed to dehydrate the laundry 56 in steps, and this step can be omitted when sufficient dehydration is performed in the previous washing step.

Step S201

This step is a process of step S200 for performing a predetermined time, and the dehydration step is executed until a predetermined time elapses. Similarly, when sufficient dehydration is performed in the previous washing step, this step can be omitted.

Step S202

The drying operation 1 is performed. The blower fan 19 rotates at a low speed, the heater 20 operates in the strong mode, and the warm air 51 heated by the heater 20 is blown toward the laundry 56 from the warm air outlet 54.

Step S203

Washing tub 9 and rotary blade 11 are rotated slowly, or rotary blade 11 is rotated forward and backward while washing tub 9 is stationary, heats and dries laundry 56 while stirring the whole amount.

Step S204

It is determined whether or not a program with a high completion effect is set, and the process is branched. In the case of a program other than the high-effect program, step S203 is performed before the end of drying.

Step S205

It is checked whether or not the elapsed time from the start of drying reaches a predetermined time, and the process is branched. The predetermined time is set to be before the dryness of the laundry (i.e., the mass of the dry cloth/the mass of the wet cloth) reaches 0.9.

Drying was performed as follows. In the early stage of drying, it is important to apply an extremely large amount of heat to the laundry in order to rapidly increase the temperature of the laundry during the warm-up period in which the temperature of the laundry is increased. During the preheating period, less moisture is evaporated from the laundry.

As the temperature of the laundry rises, much moisture evaporates from the laundry, so that the temperature rise of the laundry is slowed down by the heat of vaporization, and finally the heat of heating and the heat of vaporization are balanced, and the temperature of the laundry becomes substantially constant (constant drying). When the moisture amount of the laundry is reduced, the heat of vaporization is reduced, the temperature of the laundry starts to rise again, and when the moisture of the laundry disappears, the temperature becomes substantially the same as the temperature of the warm air, and the drying is completed (reduced rate drying). The time when the temperature of the laundry starts to rise is about 0.9 in dryness.

Even when the laundry contains a large amount of moisture, wrinkles can be easily removed even if the laundry is wrinkled (it is known that wrinkles can be removed if moisture is applied to wrinkled laundry by spraying or steaming), however, in a wrinkled state, if drying is performed until the dryness becomes 0.9 or more, wrinkles are fixed, and wrinkles fixed at d cannot be removed in a subsequent step.

In actual drying, clothes of different materials and thicknesses are dried at the same time, and the time for which the dryness becomes 0.9 varies depending on the clothes. Therefore, in the present embodiment, the time is set such that the dryness of the cotton clothes most likely to wrinkle is about 0.8 to 0.85. The time for the dryness to become 0.9 differs depending on the amount of cloth, and it is needless to say that the time needs to be set depending on the amount of cloth.

Step S206

The drying operation 2 is performed by rotating the blower fan 19 at a high speed, setting the heater 20 to the weak mode to blow a high-speed wind to the laundry in the washing tub 9, and dries the laundry while spreading the wrinkles , and setting the heater 20 to the weak mode when the blower fan 19 is rotated at a high speed is performed so as not to exceed an allowable current value.

In this step, the heater 20 is in the weak mode, and the temperature of the warm air 51 is lowered as compared with step S202. Particularly, if the dryness is more than 0.9, the temperature of the clothes rises and gradually approaches the warm air temperature, but the warm air temperature is low, so that the temperature of the clothes can be kept low, and there is an advantage that damage to the clothes can be reduced.

Step S207

Step S208

is executed while the temperature of the warm air is monitored by the temperature sensor 26, and when the rate of temperature change becomes a predetermined value, it is judged that drying is completed, and when the laundry 56 is not dried, the washing tub 9 or the rotary blade 11 of step S207 is rotated to perform the judgment of step S208 again.

Step S209

After the heater 20 is turned off, the fan 19 is also turned off to stop the rotation of the washing tub 9 and the rotary blade 11, thereby ending the drying process.

Here, a relation between the wind speed of the warm air 51 blown to the clothes 56 in the drying operation 2 of step S206 and the finishing effect is described, the finishing effect is proportional to the product of the wind speed and the wind volume, i.e., the force blown to the clothes, (a) of fig. 10 is a schematic view showing a case where the high-speed warm air 51 blown out from the warm air blow-out port 54 blows to the clothes, here, a case where there is another clothes on the back surface of the clothes is shown, if the wind blows to the clothes, a force spreading out by the wind (arrow (1)) acts on the clothes, and a force (arrow (2)) pulled left and right by the wind direction flowing along the surface of the clothes by changing the flow direction after blowing to the clothes is exerted to the clothes, the wrinkles of the clothes are spread out by the force of (arrows (1) and (2)), in a case where the amount of the clothes in the washing tub 9 is large, since there is a large amount of another clothes around the clothes blown directly, the clothes, the wrinkles move freely, and thus the wrinkles are spread out mainly by the force of (1) when the wind blowing out from the clothes around the clothes, the hot air blowing out to the vicinity of the hot wind is considered, the wind blowing-out force (V) is a relatively small amount of the clothes, the clothes becomes a relatively large air blowing-off force (arrow) and a relatively constant, a blowing-out force of the clothes-out air blowing-out force (arrow) is a relatively constant-off force when the clothes-spreading-out air blowing-out force of the clothes-out air blowing-out nozzle 35, a blowing-out force is considered, a viscous air blowing-out force of the clothes-out force (arrow V-out force is reduced, a relatively-out force-out air blowing-out force-out air-out force-out air-out force-out air is a relatively-out force-.

Fig. 11 shows examples of results of examining the blowing force F discharged from the warm air outlet and the effect of the clothes after drying when the above-described drying operation is performed, the air speed and the air volume for calculating the blowing force F are adjusted by changing the rotation speed of the blower fan 19 and the area of the warm air outlet 54, the air speed is a value calculated from the result of measuring the air volume pressure characteristic of the blower fan 19, the air volume pressure characteristic is measured using a wind tunnel, the air volume is obtained from the pressure difference between the inlet and the outlet of the blower fan 19 after the blower fan 19 is attached to the washing and drying machine and the above-described air volume pressure characteristic, the air volume is divided by the area of the warm air outlet to obtain the air speed, and the air volume is multiplied by the air density to convert the air density to a mass flow rate, and then the mass flow rate is multiplied by the air speed to calculate the blowing force F.

The experimental conditions were a vertical washing and drying machine having a washing tub 9 with a diameter of about 500mm and a height of about 360mm and a distance of about 360mm from the warm air blow-out port 54 to the bottom surface of the washing tub 9, and the cloth amounts were 1kg and 2 kg. The evaluation of the finish was performed in various clothes, showing the results of a thin cotton casual shirt with significant wrinkling. The evaluation is a 10-stage sensory evaluation by visual observation, and fig. 12 shows an example of the finish of the sensory evaluation values with respect to the sleeves and the body parts. Sensory evaluation values at two sleeves and two body parts were obtained for each casual shirt, and fig. 11 shows the average value of the four positions in total.

In the case of the cloth amount of 1kg, the effect sensory evaluation value increases as the blowing force F increases, but the effect sensory evaluation value is approximately 7 although the effect sensory evaluation value is slightly different, and the effect sensory evaluation value is approximately saturated when the blowing force F reaches 6N or more. Even in the case of the cloth amount of 2kg, the effect sensory evaluation value increases as the blowing force F increases, but the effect sensory evaluation value is approximately 5 although the blowing force F becomes approximately saturated and slightly deviated when it becomes 7N or more. It is understood that the more the amount of cloth is, the larger the blowing force F is required in order to obtain the same sensory evaluation value. This is because the larger the amount of cloth, the more the amount of laundry with respect to the volume of the washing tub 9, the more difficult the laundry is to be scattered, and the larger force is required to spread the wrinkles. Further, since the sensory evaluation value is saturated at a certain level or more, the optimal finishing effect can be obtained without flowing unnecessary air by controlling the air volume and the air speed so that the optimal force acts according to the cloth amount, and the power consumption can be reduced. As a method of controlling the air volume and the air speed, a method of controlling the rotation speed of the blower fan 19 (the rotation speed is increased as the amount of the cloth increases) is easiest, and a method of controlling the area by changing the area of the warm air outlet 54 may be used.

When the sensory evaluation value is 5 or more, there is a remarkable effect as compared with the case where the conventional sensory evaluation value is about 3 or less, and the operation can be easily completed even when the iron is used after drying, and when the sensory evaluation value is 7 or more, the feeling of dissatisfaction is small even if the clothes after drying are worn as they are. In the case of a cloth amount of 1kg, the blowing force F is required to be 1.6N or more in order to make the sensory evaluation value 5 or more. In the present embodiment, the area of the warm air outlet 54 is 167mm²Becomes the air volume in the case ofIs 0.9m³A/min and a wind speed of about 90m/s or more. To make the sensory evaluation value 7, the blowing force F was 6N. In the present embodiment, the area of the warm air outlet 54 is 255mm²In the case of (2), the air volume becomes 2.1m³A/min and a wind speed of about 140m/s or more.

In the case of a cloth amount of 2kg, the blowing force F is 7N or more so that the sensory evaluation value is 5 or more. In the present embodiment, the area of the warm air outlet 54 is 255mm²In the case of (2), the air volume becomes 2.3m³A/min and a wind speed of about 150m/s or more.

As described above, in order to achieve a satisfactory finish effect, the blowing force F may be increased (the air volume Q or the air velocity V is increased), and the distance X between the warm air outlet and the laundry may be reduced (the laundry is brought close to the warm air outlet).

In order to increase the air volume Q, it is necessary to increase the rotation speed of the fan of the blower fan 19 or increase the outer diameter and the blade height of the fan. Further, it is preferable to reduce the pressure loss by increasing the area of the passage through which the warm air passes. In particular, in the case of the water cooling system using water for dehumidification, if the flow velocity of the air flowing along the drying duct 22 is too high, the cooling water is blown off by the wind. When the cooling water reaches the lint filter (not shown) and the heater 20, the drying efficiency is greatly reduced due to an increase in pressure loss caused by wetting of the lint filter, a decrease in temperature of the warm air caused by evaporation of the cooling water by the heater 20, and the like, and thus the flow path area of the drying duct 22 must be increased. However, if the air volume is greatly increased, the size of the duct and the air blowing means becomes large, which leads to an increase in the size of the outer frame 1, and it is difficult to install the washing and drying machine at home, and the maximum air volume is 2.3m³Less than min. Further, the air flow largely affects the drying performance, but if the air flow is too small, the drying time is prolonged, and the air flow needs to be 0.8m from the viewpoint of the drying performance³More than min. Therefore, the air volume is expected to be 0.8-2.3 m³/min。

On the other hand, , in order to increase the wind speed V, the blower fan 19 may be of a pressure type to reduce the area of the warm air outlet port, and when a turbofan such as is used as the blower fan 19, there are a method of increasing the rotation speed of the fan impeller at a low rotation speed and a method of increasing the rotation speed in a state where the diameter of the fan impeller is small, but high-speed rotation has an advantage that it can be mounted on the same case as that of the conventional case.

In order to reduce the distance X between the warm air outlet 54 and the laundry, there is a method of reducing the depth (Y in fig. 8) of the washing tub 9 or bringing the position of the warm air outlet 54 close to the bottom surface of the washing tub 9, but when the washing capacity is 8 to 12kg and the drying capacity is 4 to 6kg as in , the diameter of the washing tub 9 is about 500mm and the depth is about 360mm in consideration of the installation area and the like, and when the contact between the front end of the warm air outlet 54 and the laundry is considered, the distance between the warm air outlet 54 and the laundry is about 360mm equal to the depth of the washing tub 9.

Here, if there is no restriction on the volume, the distance X between the warm air blow-out port 54 and the laundry can be made small by setting the depth of the washing tub 9 to 300mm or less, and the finishing effect can be made good, and if the depth of the washing tub 9 is set to 200mm or less, the finishing effect is further improved by step , and not only is it easy to take out the laundry.

In the present embodiment, the heater 20 is used as the heat source, but the same effect can be obtained even if the heat source is a device based on a heat pump.

Claims

A vertical washing and drying machine of kinds, comprising a washing tank for storing clothes, a rotary blade provided at the bottom of the washing tank, an outer tank for storing washing water and having the washing tank built therein, a drive mechanism for rotationally driving the washing tank and the rotary blade, and a drying mechanism for blowing warm air into the washing tank,

the above-mentioned vertical washing and drying machine is characterized in that,

an outlet port for blowing out the warm air from the drying means is provided on the upper surface of the washing tub, and the wrinkles of the laundry are developed by blowing the warm air at a high speed, in which the product of the air volume and the air speed of the warm air is 1.6(N) or more toward the laundry in the washing tub.
2. The vertical washer-dryer as recited in claim 1,

the product of the air volume and the air speed is 1.6(N) to 7.0 (N).
3. The vertical washer-dryer as recited in claim 1,

the wind rate is about 0.9 cubic meter per minute and the wind speed is more than 90 meters per second.
4. The vertical washer-dryer as recited in claim 1,

the air volume of the air is about 0.9 cubic meter per minute, the air speed is more than 90 meters per second, the air volume of the air is about 2.3 cubic meters per minute, and the air speed is less than 150 meters per second.
5. The vertical washer-dryer as recited in claim 1,

the depth of the washing tank is 300mm or less.