TWI523990B - Drum washing machine - Google Patents

Description

Drum washing machine

The present invention relates to a drum type washing machine.

The drum type washing and drying machine performs washing or drying while repeatedly lifting the clothes accommodated in the drum and dropping it by gravity by the centrifugal force caused by the rotation of the lifter and the drum provided on the inner circumferential surface of the drum. The washing system causes the clothes to fall down to a small amount of washing water accumulated in the drum, that is, by so-called tapping washing. Therefore, the larger the diameter of the drum, the higher the falling height of the clothes and the higher the washing power. In the drum type washing and drying machine described in Patent Document 1, the diameter D of the drum and the deep length Ld of the drum are (D/2) / Ld = 0.9 to 1.1.

[prior technical literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2007-282962

In the above-mentioned drum type washing and drying machine, the drum diameter D is a drum The depth dimension L is approximately 2 times. Specifically, in the case of a washing capacity of 8 kg, the drum diameter D is preferably 600 mm, and the drum has a deep length Ld of 280 to 310 mm. The washing and drying machine has a high detergency due to the large diameter of the drum. Further, if the diameter of the drum is large, the clothes are easily opened when the clothes are dropped, and the warm wind during drying is spread throughout the clothes, which also contributes to energy saving and drying when drying. However, in order to accommodate a roller having a large diameter, the width of the drum type washing and drying machine body must be increased. In the case of the roller of the above size, the body has a lateral width of about 670 to 700 mm and a depth of about 600 to 620 mm.

On the other hand, in consideration of the carry-in property and the installability of the drum type washing and drying machine to a general household, the size of the main body is preferably small. Since the front side of the washing machine has a working space of the user, there is a problem that the depth of the main body is limited, but the horizontal direction of the washing machine is mostly a wall or a wash table, and the like. Cannot be set when the horizontal width is too large. According to our survey, when the horizontal width of the main body is 670~700mm, about 20% of the households cannot be set. When the horizontal width of the main body is 610 mm or less, the ratio that cannot be set is about 2%.

As described above, the lateral width of the main body is preferably 610 mm or less because of the mountability, but in the case where the main body is horizontally wide, the diameter of the drum is 500 to 530 mm. Therefore, the falling height of the clothes becomes low, and high detergency cannot be obtained. The method of improving the detergency has methods such as prolonging the washing time and increasing the water temperature, but there are problems in terms of energy saving and ease of use. Therefore, a method of improving the detergency without such a method is sought.

The object of the present invention is to make the drum which can be set in a limited space small A drum type washing machine provides high detergency.

In order to achieve the above object, the present invention is a drum type washing machine having: a drum for accommodating clothes and inclined to have a horizontal center of rotation or a side of the opening, a motor for rotationally driving the drum, and a drum for supporting the drum In the frame, the inner peripheral surface of the drum is provided with a lifter, the frame has a lateral width of 610 mm or less, and the frame has a depth of 730 mm or less, and is repeatedly performed by the rotation of the drum and the lifter. The washing machine is lifted and lifted by gravity, and the drum type washing machine is set such that the diameter D (mm) of the drum and the depth dimension Ld (mm) of the drum are 0.54 ≦ (D/2). /Ld≦0.76, the volume of the aforementioned drum is 71 (liter) or more.

According to the present invention, there is provided a drum type washing machine capable of having a high washing power even with a small drum diameter.

1‧‧‧ frame

2‧‧‧ outer trough

2a‧‧‧ suction port

2d‧‧‧ outer cover

3‧‧‧Roller

3b‧‧‧lifter

3c‧‧‧ fluid balancer

3d‧‧‧Roller bottom plate

3e‧‧‧Roller raft

4‧‧‧Motor

6‧‧‧Operator panel

8‧‧‧Dry filter

9‧‧‧

16‧‧‧Water supply solenoid valve

22‧‧‧Circulating pump

28‧‧‧Air supply unit

28a‧‧‧Fan motor

28b‧‧‧Fan box

29‧‧‧Drying catheter

31‧‧‧heater

32‧‧‧Wind air blown out

33‧‧‧ Inspiratory catheter

38‧‧‧Control device

Fig. 1 is an external view showing the drum type washing and drying machine of the first embodiment.

Fig. 2 is a perspective view showing a part of the frame of the drum type washing and drying machine to show the internal structure.

Fig. 3 is a side view showing the internal structure of the drum type washing and drying machine.

Fig. 4 is a rear view showing the back cover of the drum type washing and drying machine to show the internal structure.

Figure 5 is a cross-sectional view showing the dimensions of the drum.

Figure 6 is an experimental result showing the relationship between the washing volume ratio and the detergency index.

Fig. 7 is an experimental result showing the relationship between the depth dimension Ld of the drum and the detergency index.

Fig. 8 is a schematic view showing a state in which the laundry in the drum is dropped.

Figure 9 is the drum diameter D and the depth dimension Ld of the drum.

Figure 10 is a block diagram of the control system of the washing and drying machine shown in Figure 2.

Figure 11 is a flow chart showing a part of the control processing executed by the microcomputer in the controller of the control system shown in Figure 10.

Hereinafter, embodiments will be described using the drawings.

[Example 1]

This embodiment is an example of a drum type washing and drying machine.

Fig. 1 is an external view of a drum type washing and drying machine 100 in the first embodiment. 2 is a perspective view showing a part of the frame cut in order to show the internal structure, FIG. 3 is a side view showing the internal structure, and FIG. 4 is for displaying the inside. Construct and remove the rear cover back view.

The drum type washing and drying machine 100 of the present embodiment includes a drum 3 for accommodating clothes, washing, dehydrating, and drying, a motor 4 for rotating the drum 3, and a casing 1 for supporting the drum 3. The frame 1 constituting the outer contour is attached to the base 1h, and is composed of left and right side plates 1a and 1b, a front cover 1c, a back cover 1d, an upper cover 1e, and a lower front cover 1f. The left and right side panels 1a, 1b are The upper reinforcing material (not shown), the front reinforcing material 37, and the rear reinforcing material (not shown) are combined to form a box-shaped frame 1 including the base 1h, and the frame has sufficient strength. The size of the casing 1 is represented by a horizontal width Wb, a depth dimension Db, and a height dimension Hb.

Further, the door 9 is provided substantially at the center of the front cover 1c for closing the insertion opening for allowing the clothes to enter and exit, and is supported by the hinge 9c provided on the front reinforcing member so as to be openable and closable. The door opening lever 9b is pulled to unlock the locking mechanism (not shown) to open the door, and the door is locked and closed by pushing the door against the front cover 1c. The front reinforcing material 37 is concentric with an opening of an outer groove to be described later, and has a circular opening for allowing clothes to enter and exit. The portion for closing the opening of the outer groove of the door 9 is composed of a concave glass 9a and can withstand heat during drying.

Further, an operation panel 6 is provided on the upper right side of the casing 1, and includes a power switch 11, operation switches 12 and 13, and a display 14. The operation panel 6 is electrically connected to the control device 38 provided on the upper portion of the casing 1.

As shown in Fig. 5, the drum 3 is cylindrically supported and rotatably supported, and the outer peripheral surface of the seesaw 3e and the rear bottom plate 3d have a plurality of through holes 3f for passing water and ventilation, and the front end faces. Set useful to get clothes into The opening 3a is formed. The front end portion of the seesaw 3e is provided with a fluid balancer 3c which is concentric with the seesaw 3e and integrated with the drum 3. The inside of the seesaw 3e is provided with a plurality of lifters 3b extending in the axial direction. When the drum 3 is rotated during washing and drying, the clothes are repeatedly lifted along the seesaw 3e by the lifter 3b and the centrifugal force, and then the gravity is dropped. The action. The central axis of rotation of the drum 3 is inclined to be horizontal or the side of the opening portion 3a is raised. The diameter of the jaw 3e of the drum 3 is indicated by D, and the depth dimension is indicated by Ld. The depth dimension Ld is the length from the front end face of the seesaw 3e to the bottom plate 3d.

Further, the cylindrical outer groove 2 for storing the washing water is supported by the casing 1, and the drum 3 is covered coaxially, and the front surface thereof is opened, and the motor 4 is attached to the outer center of the back surface. The rotating shaft 4a of the motor 4 penetrates the outer tub 2 and is coupled to the central portion of the bottom plate 3d of the drum 3. The front opening portion of the outer tub 2 is provided with an outer tank cover 2d, and water storage in the outer tank is possible. The center of the front side of the outer tank cover 2d has an opening portion 2c for allowing clothes to enter and exit. The opening 2c and the opening provided in the front reinforcing member 37 are connected by a rubber expandable body 10, and the glass 9a of the door 9 is brought into contact with the lip of the expandable body 10 by closing the door 9, and the outer groove is provided. 2 water seals. When the door 9 is closed, the front end of the concave glass 9a blocks the opening 2c of the outer tank cover 2d and the opening 3a of the drum 3. At this time, it is considered that the tip end of the glass 9a and the tip end of the drum 3 (the tip end portion of the fluid balancer 3c) are substantially aligned in the axial direction so as not to allow the washing material to enter the gap between the outer peripheral portion of the glass 9a and the outer tank cover 2d.

A drain port 2b is provided at a lowermost portion of the bottom surface of the outer tub 2, and is connected to the drain pipe 26. A circulation pump 22, a wire chip filter 23, and a drain valve 21 are provided in the middle of the drain pipe 26, and the water supply method by closing the drain valve 21 will be provided. Water accumulates in the outer tank 2, and the drain valve 21 is opened to discharge the water in the outer tank 2 to the outside of the machine.

A lotion container 7 is disposed on the upper left side of the casing 1, and the open lid type lid 7a is opened and put into the lotion as shown by the two-dot chain line in Fig. 1 . The inside of the lotion container 7 is partitioned into a plurality of tank chambers, and a powder lotion, a liquid lotion, a soft lotion or the like can be separately introduced.

A water supply solenoid valve 16, a wind water supply pump 17, and a water level sensor 18 are provided in the upper rear portion of the casing 1 to supply water. The upper cover 1e is provided with a water supply pipe connection port 17a from the water supply pipe connection port 16a of the water channel plug and the remaining hot water of the wind. The water supply solenoid valve 16, the Fenglu water supply pump 17, and the lotion container 7 are connected by a water supply pipe. The lotion container 7 is connected to the outer tank 2, and the tap water or the wind water is supplied to the outer tank 2 via the lotion container 7 by opening the water supply solenoid valve 16 or operating the air water supply pump 17. The lotion which the user puts into the lotion container 7 is supplied to the bottom of the outer tank 2 together with water to prevent the undissolved powder lotion or the high-concentration liquid lotion, soft lotion, etc. from directly contacting the drum 3. The clothes are colored or stained.

The circulation pump 22 has two discharge ports, and the discharge port can be switched by switching the rotation direction of the circulation pump 22. Thereby, the lotion can be dissolved and the washing water can be dispersed to the washing. When the lotion is dissolved, the circulation pump 22 is reversely rotated. A small amount of water supplied to the bottom of the outer tank 2 containing the undissolved powder lotion is circulated in such a manner that it enters the circulation pump 22 from the drain port 2b through the thread chip filter 23, and passes through the circulating water pipe from the discharge port 22b. 25b returns to the bottom of the outer tank 2 (outer tank cover 2d). At this time, the undissolved lotion and water are vigorously stirred in the circulation pump 22, and the lotion can be dissolved with good efficiency to generate a high Concentration lotion solution. On the other hand, the water circulation pump 22 is rotated in the washing. The circulation is carried out in such a manner that the washing water accumulated in the bottom of the outer tank 2 enters the circulation pump 22 from the drain port 2b through the thread chip filter 23, and passes through the circulation water pipe 25a from the discharge port 22a, and is sprinkled from the upper portion of the outer tank cover 2d. The nozzle sprinkles water into the drum 3 and returns to the bottom of the outer tank 2. Thereby, since the washing water can be dropped and spread over the washing material, high washing power or washing performance can be obtained, and a small amount of washing water can be repeatedly circulated by the circulation pump 22 to save water.

The swarf filter 23 can be easily attached and detached by opening the 扉1g provided on the lower front cover 1f.

The lowermost portion of the rear portion of the outer tank 9 is provided with an air trap 24 which is connected to the water level sensor 18 by a short tube 18a for detecting the water level in the outer tank 2.

The outer tub 2 is shock-proof supported by a shock absorber unit 5 (constructed by a coil spring and a damper) that is fixed to the base 1h on the lower side. Further, the upper side of the outer tub 2 is supported by an auxiliary spring (not shown) attached to the upper reinforcing member to prevent the outer tub 2 from falling in the front-rear direction.

The drying duct 29 is attached to the inner side of the back surface of the casing 1, and is provided in the longitudinal direction, and the lower portion of the duct is connected to the air inlet 2a provided below the back surface of the outer tank 2 by a rubber bellows tube 29a. A water-cooling dehumidifying mechanism (not shown) is built in the drying duct 29, and the cooling water is supplied from the water supply solenoid valve 16 to the water-cooling/dehumidifying mechanism. The cooling water flows down along the wall surface of the drying duct 29, enters the outer tank 2 from the intake port 2a, and is discharged from the drain port 2b.

The upper portion of the drying duct 29 is connected to the upper right side of the casing 1 The rear drying filter 8 is connected. The air entering the drying filter 8 from the drying duct 29 is removed by the filter of the filter of the filter 8. The cleaning of the drying filter 8 is carried out by pulling the drying filter 8 upward as shown by the one-dot chain line of FIG. Further, the drying filter 8 is connected to the intake duct 33, and the other end of the intake duct 33 is connected to the intake port of the air blowing unit 28.

In the present embodiment, the means for blowing the air in the drum 3 is in the casing 1 and viewed from the side of the door 9, and the rotation axis of the drum 3 is disposed on the upper right side, and the drum 3 is repeatedly turned to the right by the motor 4. When rotating or rotating to the left, the wind is blown to the clothes lifted by the rotation of the drum 3, and dried. The device for blowing the air is provided by the air blowing unit 28, a heater 31 for heating the air provided on the discharge side of the air blowing unit 28, a warm air outlet 32 provided downstream of the heater 31, and the like. It is composed of wind roads.

The blower unit 28 is composed of a fan motor 28a for driving, a fan (not shown), and a fan case 28b. The fan case 28b houses a heater 31 for heating the air sent by the fan. The discharge port of the blower unit 28 is connected to the warm air duct 30. The warm air duct 30 is connected to the warm air outlet 32 provided in the outer tank cover 2d through the rubber bellows pipe 30a and the bellows pipe joint 30b.

In the present embodiment, the area of the warm air blowing port 32 is made smaller than the air path area of the drying duct 29, the warm air duct 30, the drying filter 8, and the like, and the fan motor 28a is rotated at a high speed to generate high-pressure air. Thereby, the high-speed wind is blown out from the warm air outlet 32 into the drum, and the high speed is allowed. The wind is attached to the clothes, and the creases that the clothes produce can be stretched by the wind. Among them, the high-speed wind is, for example, 45 m/s or more. Further, since the air blowing unit 28 is provided on the upper right side in the casing 1, the warm air blowing port 32 is provided at a position obliquely upward to the right of the outer tank cover 2d, and the distance to the warm air blowing port 32 is made to be shortened as much as possible. Therefore, it is possible to prevent an increase in pressure loss and to blow high-speed wind to the clothes with good efficiency.

A temperature sensor (not shown) is provided in the drain port 2b, the air inlet of the air blowing unit 28, and the front of the warm air blowing port 32.

The wind flow during the drying operation is as follows. When the blower unit 28 is operated and energized to the heater 31, high-speed warm air is blown into the drum 3 from the warm air outlet 32 (arrow 41), wet clothes are touched, and the clothes are heated to evaporate water from the clothes. In the drying operation, when the drum 3 is rotated in the reverse direction, the clothes are lifted up to the vicinity of the warm air blowing port 32 by the lifter 3b, and the high-speed wind hits the clothes. At this time, the distance between the warm air outlet 32 and the clothes is the shortest, so that the wrinkles of the clothes can be stretched by the high speed wind. The high-temperature and high-humidity air circulates in the following manner, flows from the through hole 3f provided in the drum 3 to the outer tub 2, is sucked into the drying duct 29 from the air inlet 2a, and flows downward from the top in the drying duct 29 (arrow 42 The cooling water from the water-cooling dehumidification mechanism flows down the wall of the drying duct 29, and the hot and humid air is cooled and dehumidified by contact with the cooling water to become dry low-temperature air and enter the drying filter 8; the dry low-temperature air passes through The screen filter of the drying filter 8 is removed to remove the chippings, enters the suction duct 33, and is sucked into the air blowing unit 28 (arrow 43); and, after being pressurized by the air blowing unit 28, it flows to the heater 31 ( Arrow 44) is heated again and blown into the drum 3 Inside. Further, a heat pump may be used instead of the heater 31 of the air heating means and the water-cooling dehumidifying means of the air dehumidifying means.

The relationship between the cleaning power of the drum type washing and drying machine 100 configured as described above and the volume of the drum, the diameter of the drum, and the depth of the drum will be described. Further, the drum volume has a calculation volume obtained from the diameter of the drum and the depth dimension of the drum, and the actual volume of the fluid balancer 3c, the lifter 3b, and the projection of the bottom plate 3d installed in the drum 3 is subtracted from the calculated volume. Volume. Since the actual volume can be stored and the actual volume is affected, the actual volume is used in the following description. For the drum volume 65 to 86 L (liter), the drum diameter D = 500 to 600 mm, and the drum depth dimension Ld = 275 to 394 mm, the results of the experiment after the mass of the laundry of 9 kg are described.

Fig. 6 is a graph showing the relationship between the drum volume divided by the mass of the laundry (hereinafter referred to as the washing ratio volume) and the detergency index. The higher the detergency index, the higher the detergency, and the washing power of the standard washing machine specified by the JIS standard household electric washing machine performance measuring method (JIS C 9811) is 1 value. As a washing machine, the detergency index must be 0.8 or more, and if the detergency index is 0.9 or more, the satisfactory detergency can be achieved. In the scope of this review, it is understood that the larger the washing ratio, the higher the detergency index, but the larger the washing ratio is about 8.3 L/kg, the rate of increase in the detergency index will decrease, even in order to improve washing. The force is increased and the drum volume is increased more than necessary, and the effect is still small. It is understood from the figure that in order to obtain a detergency index of 0.8 or more, the washing volume ratio must be about 7.88 L/kg or more. In order to obtain a detergency index of 0.9 or more, the washing volume ratio must be about 8.22 L/kg. on. In the case where the mass of the laundry is 9 kg, the drum volume is about 71 L or more in order to obtain a detergency index of 0.8 or more, and the drum volume is about 74 L or more in order to obtain a detergency index of 0.9 or more. Further, when the washing quality is 8 kg, the drum volume can be set to about 63 L or more when the washing power index is 0.8 or more, and the drum volume can be set to about 66 L or more when the washing power index is 0.9 or more, and the washing mass is 7 kg. When the detergency index is 0.8 or more, the drum volume can be set to about 55 L or more, and when the detergency index is 0.9 or more, the drum volume can be set to about 58 L or more.

Fig. 7 is a graph summarizing the relationship between the drum diameter D, the depth dimension Ld of the drum, and the detergency index. The larger the diameter of the drum, the higher the washing power. This is because the washing machine of the drum type washing machine beats the washing person when the washing is dropped, and it is known that the higher the falling height, the higher the washing power. Further, it is understood that the larger the depth dimension Ld of the drum, the higher the washing power. The reason is as follows.

Fig. 8 is a schematic view showing the state of the laundry in the drum at the time of washing which is obtained by the difference in the depth dimension of the drum. Fig. 8(A) shows a case where the depth dimension Ld of the drum is small, and Fig. 8(B) shows a case where Ld is large. The amount of washings is the same, and the drum rotates in the direction indicated by the arrow in the direction of rotation in the figure. Moreover, for the sake of simplification, the laundry is uniformly distributed in the drum 3 for explanation. The arrow inside the drum indicates that the clothes are lifted up to the top of the drum and then dropped. When the depth dimension Ld of the drum is small, the thickness t of the washing layer becomes thick, and therefore the falling height h of the washing material becomes low. On the other hand, when Ld is large, since the washing material is dispersed in the depth direction, the thickness t of the washing layer becomes thin, and as a result, the falling height h becomes high. Therefore, if you increase the depth size Ld, even if it is the same drum diameter, the falling height becomes high, and the washing power is improved. Moreover, when the depth dimension Ld is large, the washing power is further improved by the fact that the falling area of the clothes is increased (in the figure, the number of arrows indicating the falling of the clothes).

Therefore, even if the diameter D of the drum is small, if the depth dimension Ld of the drum is appropriately set, the same cleaning power as that of the drum having a larger diameter of the drum can be obtained. For example, based on the result of FIG. 7, the cleaning force of the drum (the point x in the figure) with respect to the drum diameter D of 600 mm and the depth dimension Ld of 293 mm is understood, and if the drum diameter D is reduced to 525 mm, the depth dimension is An increase in Ld of 394 mm (y point in the figure) still yields roughly equivalent detergency. Further, when the diameter D of the drum is 525 mm, since the washing layer is thin and the clothes are dispersed in the depth direction, there is little advantage in that the washing is uneven. The experiment reduced the unevenness of washing by about 20%.

Next, the drum-type washing and drying machine has good mountability to a place of use in a general household, and the size of the drum 3 having a high washing power will be described. In order to increase the detergency, it is preferable to increase the drum diameter D and the depth dimension Ld of the drum, but in view of the suitability and ease of use, D and Ld have upper limit values.

As described in the subject, the effect of the lateral width Wb on the mountability is larger than the depth dimension Db of the casing 1. When Wb is 600 mm or less, the ratio that cannot be set is about 2%. Therefore, the maximum drum diameter that can be accommodated by the width is described below.

The drum 3 is rotated in the outer tub 2, so that it is necessary to provide a gap in the radial direction. In order to make the radial direction gap small, the drum 3 and the outer tank 2 are required. There is a high degree of dimensional accuracy, which is related to the cost of the product. Moreover, if the gap is too small, the power consumption increases due to an increase in wind loss during dehydration. Further, the outer tub 2 is generally made of plastic and is manufactured by injection molding, but the inner diameter of the joint portion with the outer tank cover 2d due to the draft angle of the mold becomes the maximum inner diameter. Based on these circumstances, the radius gap between the drum 3 and the outer tub 2 must be about 25 mm, that is, the difference in diameter must be about 50 mm.

During the dehydration, the drum 3 and the outer tub 2 are vibrated due to uneven washing. The outer tub 2 is shock-supported to the housing 1 by the suspension unit 5, suppresses vibration of the outer tub 2, and prevents vibration from being transmitted to the floor via the housing 1. When the drum 3 is gradually increased in number of revolutions from the stopped state, the resonance is passed at a degree of rotation of 150 to 400 per minute. At this time, when the vibration of the outer tank 2 in the left-right direction is large, the outer tank 2 collides with the left and right side plates 1a and 1b of the casing 1 to generate a strange sound. Therefore, it is necessary to cover the outer peripheral surfaces of the left and right side plates 1a and 1b and the outer groove 2. Set the gap between them. In order to reduce the left and right vibrations at the time of resonance, the washings are uniformly attached to the jaws 3e of the drum 3 at the time of dehydration start, and the height of the drum rotation speed is controlled to minimize the unevenness of the laundry. Moreover, the anti-vibration support is made appropriate and the left and right vibrations are reduced. However, there are many types of washing materials, and even if they are attached to the seesaw 3e uniformly, there are cases where the materials are uneven due to the difference in materials, and it is difficult to eliminate the vibration. Therefore, the gap between the horizontal width Wb of the frame 1 and the outer groove 2 must be about 20 mm on one side.

When such a gap is considered, when the horizontal width Wb of the casing 1 is 610 mm, the drum diameter D is 530 mm at the maximum.

Further, regarding the depth direction dimension Db of the casing 1, the effect of the lateral width Wb on the installability is small, and in the already set state, as long as it can be in the frame The front side of the body 1 ensures the working space of the user and opens the door 9. However, when it is set to the waterproof disk, it must be below the depth dimension of the waterproof disk, but as long as the depth dimension of the base 1h of the frame 1 is set to be put into the waterproof disk as shown in FIG. 3, the depth dimension ratio of the upper portion is The waterproof disk is also great. According to our survey, when the depth dimension Db is 730mm, the proportion of households that cannot be set is about 10%. If it is larger than this, the number of households that cannot be set will increase significantly. It is preferable to suppress the depth dimension Db to 730 mm or less.

The front side of the outer tank 2 has a door 9, and the rear side of the outer tank 2 is provided with a motor 4 as a driving portion, and a drying duct 29, so that the depth dimensions are subtracted from the depth dimension Db of the casing 1, and then reduced. The amplitude of the vibration in the front-rear direction of the outer groove 2 is obtained, and the obtained value is the depth dimension of the outer groove 2. Further, the gap between the outer groove 2 and the drum 3 in the depth direction must be the same as the gap in the radial direction. Therefore, the depth dimension Ld of the drum 3 is a value obtained by subtracting about 50 mm from the depth dimension of the outer groove 2. Further, in order to allow the washing material to be easily taken out of the drum 3, the drum-type washing and drying machine which tilts the rotation center axis of the drum 3 and raises the front side of the drum 3 must be used in a tilted space, and this portion must also be reduced. The depth dimension of the outer groove 2.

Therefore, in order to increase the cleaning power, it is preferable to increase the depth dimension Ld of the drum 3 by flattening the components located in front of and behind the outer tub 2, and reducing the vibration amplitude in the front-rear direction of the outer tub 2. However, if the depth dimension Ld of the drum is too large, the hand cannot be attached to the laundry located on the deep side of the drum, and the usability is greatly deteriorated. In consideration of ease of use, the depth dimension Ld of the drum must be at most 440 mm, preferably 400 mm or less.

Figure 9 shows the detergency index of 0.8 obtained from the results of Figure 7 and The relationship between the drum diameter D of 0.9 and the depth dimension Ld of the drum. As described above, in consideration of the stipability and ease of use, the drum diameter D is set to 530 mm or less, and the depth dimension Ld of the drum is set to 440 mm or less.

First, in order to obtain the minimum necessary detergency index 0.8 of the washing machine, it is preferable to set the drum diameter D and the depth dimension Ld of the drum to a range surrounded by abc in the drawing. Specifically, when D is 530 mm, Ld is 350 mm, and when Ld is 440 mm, D is 477 mm. If the value is expressed by (D/2)/Ld, it is in the range of 0.54 to 0.76. Further, when the desired depth dimension Ld is 400 mm, D is 498 mm, and (D/2)/Ld is in the range of 0.62 to 0.76. Further, as shown in Fig. 6, the drum volume must be 71 L or more at a washing mass of 9 kg, 63 L or more at 8 kg, and 55 L or more at 7 kg.

Further, in order to obtain a drum diameter D of a substantially satisfactory detergency index of 0.9 and a depth dimension Ld of the drum, it is within the range surrounded by abc in the drawing. When D is 530 mm, Ld is 379 mm, and when Ld is 440 mm, D is 515 mm. The value of (D/2)/Ld is in the range of 0.56 to 0.70. When Ld is 400 mm, D is 515 mm, and (D/2)/L is in the range of 0.64 to 0.70. In this case, the drum volume is 74 L or more at a washing mass of 9 kg, 66 L or more at 8 kg, and 58 L or more at 7 kg.

By setting the drum size and the drum volume in the range of (D/2)/Ld described above, a high-cleaning power can be obtained even in a drum-type washing and drying machine which is installed in a limited space.

Figure 10 is a block diagram of a control device 38 of the drum type washing and drying machine of the present embodiment. The 50-series microcomputer is connected to the operation button input circuit 51, the water level sensor 18 and the temperature sensor 52 connected to the switches 12 and 13, and receives various button operations, washing steps, and various information signals in the drying step. . The output from the microcomputer 50 is connected to the drive circuit 54 and is connected to the water supply solenoid valve 16, the drain valve 21, the circulation pump 22, the motor 4, the air supply unit 28, the heater 31, etc., for controlling the opening and closing and rotation. And power on. Further, it is connected to a seven-segment light-emitting diode or liquid crystal display 14 for notifying the user of the operation state of the washing machine, and the light-emitting diode 56 and the buzzer 57.

When the power switch 11 is pressed and the power is turned on, the microcomputer 50 is started, and the basic control processing program for washing and drying as shown in Fig. 11 is executed.

Step S101

The state of the washing and drying machine and the initial setting are performed.

Step S102

The display 14 of the operation panel 6 is turned on, and the washing/drying stroke is set in accordance with an instruction input from the operation button switch 13. The standard washing/drying stroke, or the previously performed washing/drying stroke, is automatically set when there is no indication of the input.

Step S103

Monitoring the indication input from the start switch 12 of the operation panel 6 and giving Treat separately.

Step S104

If the start switch 12 is pressed, the cloth amount sensor is driven. The cloth amount sensor rotates the drum 3 at a low speed, for example, or accelerates it to a predetermined number of rotations, and is measured based on the current value of the motor 4 at this time. Further, the display 14 displays the washing amount, the washing time, the number of washings, the dehydration time, and the time until the end of the washing and drying. Referring to the washing dose display, the user opens the lid 7a and puts an appropriate amount of the lotion into the lotion input chamber of the lotion container 7. Place the soft lotion into the soft lotion into the chamber as necessary.

Step S105

The water supply solenoid valve 16 is opened, tap water is supplied to the lotion container 7, and the powder lotion is allowed to flow to the bottom of the outer tank 2. Once the water level sensor 18 detects that the water has been supplied to the lotion level, the water supply is stopped. The water level is set to a maximum of 10 times the concentration of the washing water generated in the next lotion melting step (step S106). The concentration of the lotion is defined as 1 time by the specified standard concentration of the lotion manufacturer (in a general powder synthetic lotion, the concentration at which 20 grams of the lotion is dissolved in 30 liters of water). When the concentration of the lotion is set to 10 times, when the concentration of the lotion is too high, there is a problem that the fluorescent whitening agent contained in the lotion causes stains in the clothes (extraordinarily remarkable when irradiated with ultraviolet rays). In order to make the stain unobtrusive, it is necessary to suppress the concentration of the lotion to 10 times or less.

Step S106

The circulation pump 22 is reversely rotated to perform the dissolution of the lotion. The lotion is gradually agitated by the circulation pump 22 to form a washing water having a high lotion concentration. The lotion is dissolved for 1 minute to 2 minutes.

Step S107

Perform pre-laundry. While the drum 3 is rotated forward at a low speed, the circulation pump 22 is rotated, and the high-concentration washing water generated at the bottom of the outer tub 2 is spread from the sprinkler provided in the upper portion of the outer tank cover 2d to the washings in the drum 3. The high concentration of the washing water passes through the washing by the soaking action of the lotion without unevenness. Moreover, since the dissolving power to the oil stain is strong, the effect of lifting the dirt from the washing material is very large, and the dirt can be easily peeled off in the real laundry in the next step. The water level in the outer tank 2 reduces the amount of washing water contained in the washings, so that the electromagnetic water supply valve 16 is opened, and the water supply is continued into the outer tank 2, and the pre-washing is continued until the predetermined water level.

Step S108

Perform real laundry. While the drum 3 is rotated forward and backward at a low speed, the circulation pump 22 is rotated, and the washing water accumulated in the bottom of the outer tank 3 is sprinkled from the sprinkler on the laundry, and circulated as described above. In the present embodiment, since the depth dimension Ld of the drum is large, the shape of the sprinkler is set such that the washing water is sprinkled from the front side of the drum 3 to the deep side, so that the washing water passes through the washing and does not become uneven.

Step S109

Perform the first wash. First, after the drain valve 21 is opened to discharge the water in the outer tub 3, the drum 3 is rotated at a high speed in one direction to centrifugally dewater the washing water contained in the washing.

Then, the water supply solenoid valve 16 is opened to supply water to the bottom of the outer tank 3 until the set water level is reached. Then, in the same manner as the real laundry, while the drum 3 is rotating in the reverse direction, the circulation pump 22 is rotated, and the washing water accumulated in the bottom of the outer tank 3 is sprinkled from the sprinkling water on the washing object, and the washing is performed as described above, and the washing is performed. .

Step S110

The number of washings is performed according to the number of times set in step S102, but the case where the number of washings is twice is described here. Perform the second (final) wash. When the soft lotion is put into the softener into the chamber, the soft lotion is supplied into the outer tub 3 at the time of final water supply. The other operations are the same as those of the first washing, and thus the description thereof will be omitted.

Step S111

Check if the washing and drying stroke has been set and dispose of separately. Step S112 is executed only when the washing stroke is set, and step S113 is executed when the washing and drying stroke is set.

Step S112

Perform the final dehydration. The drum 3 is rotated at a high speed in one direction to centrifugally dewater the washing water contained in the washing. After performing the dehydration for the specified time, make the roller 3 stop. Then, the drum 3 is rotated at a low speed and rotated in the forward and reverse directions, and the washing agent attached to the jaw 3e of the drum 3 is dropped by centrifugal force at the time of dehydration, and the operation is terminated.

Step S113

When the washing and drying stroke is set, high-speed dehydration is performed at a higher speed than that in step S112, and the amount of residual water in the clothes is reduced. At this time, the blower unit 28 may be operated to rotate at a low speed, and the heater 31 may be energized to blow the warm air into the drum 3 to raise the temperature of the clothes. The clothes become hot and can effectively dehydrate the water from the clothes (when the temperature rises, the surface tension of the water is lowered, so that the water can be dehydrated with good efficiency).

Step S114

Perform a dry run. The blower unit 28 is rotated, and is energized to the heater 31, and the drum 3 is repeatedly rotated in the forward and reverse directions according to the predetermined number of rotations and the rotation time, and the high-speed warm air is blown onto the clothes while changing the position of the clothes in the drum 3. The temperature of the entire clothes rises and the water evaporates from the clothes, and is dried while stretching the creases of the clothes.

As described above, in the present embodiment, the high-speed warm air having a blow speed of 45 m/s or more is blown, and even if the depth of the drum is large, the warm air can be blown to the clothes located on the deep side of the drum 3, and unevenness in drying can be suppressed. In particular, if the warm air flows from the opening side to the bottom plate 3d, the warm air is easily blown to the clothes located near the bottom plate 3d, so that the completion can be expected. Moreover, even if the diameter of the drum 3 is small and the space for expanding in the up and down direction is small, the clothes are still deep. The side-expanded space also has the effect of stretching the pleats of the clothes with high-speed wind.

The drying is performed while monitoring the warm air and the cooling water drainage temperature by the temperature sensor, and the temperature change ratio ends when the temperature change ratio reaches the predetermined value.

Further, the present embodiment is described with respect to the drum type washing and drying machine, but the relationship between the frame size, the drum diameter, the depth dimension of the drum, and the drum volume is also completely the same for the drum type washing machine having no drying function.

1c‧‧‧ front cover

1d‧‧‧Back cover

1e‧‧‧Top cover

1h‧‧‧Base

2‧‧‧ outer trough

2b‧‧‧Drainage

2c‧‧‧ openings

2d‧‧‧ outer cover

3‧‧‧Roller

3a‧‧‧ openings

3b‧‧‧lifter

3c‧‧‧ fluid balancer

4‧‧‧Motor

4a‧‧‧Rotary axis

5‧‧‧Shock unit

8‧‧‧Dry filter

9‧‧‧

9a‧‧‧glass

10‧‧‧Flexible body

21‧‧‧Drain valve

22‧‧‧Circulating pump

22a‧‧‧Exporting

22b‧‧‧Circulating water pipes

23‧‧‧Thread dandruff filter

25a‧‧‧Circulating water pipes

25b‧‧‧Circulating water pipes

26‧‧‧Drainage pipe

28‧‧‧Air supply unit

29‧‧‧Drying catheter

29a, 30a‧‧‧ snake tube

30‧‧‧Warm duct

31‧‧‧heater

32‧‧‧Wind air blown out

37‧‧‧Pre-reinforcing materials

41, 42, 43, 44‧‧‧ arrows

Claims (2)

A drum type washing machine is provided in a general household, and the drum type washing machine has a drum for accommodating clothes and inclined to have a horizontal center of rotation or a side of the opening, a motor for rotating the drum, and a support for supporting In the frame of the drum, the inner peripheral surface of the drum is provided with a lifter, the frame has a lateral width of 610 mm or less, and the frame has a depth of 730 mm or less, and is rotated by the drum and the lifter. The drum type washing machine is characterized in that the diameter D (mm) of the drum and the depth dimension Ld (mm) of the drum are set to 0.54 ≦ (the washing machine is lifted up and then dropped by gravity). D/2)/Ld≦0.76, the depth dimension Ld of the drum is 350 mm or more and 440 mm or less. A drum type washing and drying machine is provided in a general household, and the drum type washing and drying machine has a drum for accommodating clothes and inclined to have a horizontal center of rotation or a side of the opening, a motor for rotating the drum, And a frame for supporting the drum, wherein an inner surface of the drum is provided with a lifter, the frame has a lateral width of 610 mm or less, and the frame has a depth of 730 mm or less, and the rotation of the drum is The lifter repeatedly performs washing and drying while lifting the clothes and dropping them by gravity. The drum type washing and drying machine is characterized in that the diameter D (mm) of the drum and the depth dimension of the drum are set. Ld (mm) is 0.54 ≦ (D / 2) / Ld ≦ 0.76, The depth dimension Ld of the drum is 350 (mm) or more and 440 mm or less. During the drying operation, the clothes in the drum are blown at a speed of 45 m/s or more from the opening side.