TWI425130B - Drum washing machine - Google Patents

Description

Drum washing machine

The present invention relates to a drum type washing machine having a drum groove in which a rotating shaft is horizontal or inclined.

Regarding the drum type washing machine, a drum type washing machine that sprays washing water or washing water to the laundry in the rotating drum tank is disclosed in order to improve the washing power or the washing ability.

In the patent document 1 (JP-A-2008-113982), it is disclosed that the washing water at the bottom of the outer tank is sucked from the first flow path to the circulation pump, and then from the third flow path toward the upper portion of the outer groove. Push the washing machine into the washing tank.

In the patent document 2 (JP-A-2008-73128), a drum type washing machine which changes the direction in which the washing water or the washing water is sprinkled in response to the reverse rotation of the washing drum tank is disclosed.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] JP-A-2008-113982

[Patent Document 2] JP-A-2008-73128

The drum type washing machine seeks to improve the washing power and the cleaning ability, and also shortens the washing time from the viewpoint of user convenience.

In addition, because of the improvement of users' ecological awareness, they also seek to save water or save energy.

Here, an object of the present invention is to provide a drum type washing machine which can improve washing power, water saving, shortening washing time, and energy saving by utilizing a variety of water sprinkling used in a washing operation.

In order to solve the above problems, the drum type washing machine of the first aspect of the invention includes a drum that is rotatably disposed to accommodate laundry, a drum motor that rotationally drives the drum, and an outer drum a groove; an outer groove cover provided at an opening of the outer groove; a circulation pump for drawing water from the outer groove; and a circulating sprinkling nozzle for circulating the circulating water sucked by the circulation pump toward the drum; And a control device for controlling the drum motor and the circulating pump to perform at least a washing step and a washing step, wherein the outer tank cover is provided with the circulating sprinkling nozzle on the left and right sides, and the control device rotates in the washing step The drum motor is driven to rotationally drive the drum, and the circulating pump is rotationally driven to discharge circulating water from the left and right circulating sprinkling nozzles provided in the outer tank cover to both of the clothes in the drum.

According to the present invention, it is possible to provide a drum type washing machine which can improve the washing power, save water, shorten the washing time, and save energy by diversifying the water spray used in the washing operation.

Hereinafter, the form for carrying out the invention (hereinafter referred to as "embodiment") will be described in detail with reference to the drawings. Furthermore, the same symbols in the figures are the same or equivalent.

Drum washing machine

First, the drum type washing machine 1 of the present embodiment will be described with reference to Figs. 1 and 2 .

Fig. 1 is a perspective view showing a part of the casing in order to show the internal structure of the drum type washing machine of the embodiment. Fig. 2 is a right side view showing a part of the casing and an outer groove in order to show the internal structure of the drum type washing machine of the embodiment.

The door 2 is closed to the center of the front cover 1c, and is used to take out the input port of the laundry, and is hinged to be placed in front of the drum type washing machine 1 (not shown). Supported by the illustration).

The lotion container 5 is provided on the upper left side of the drum type washing machine 1, and is provided with a detergent tray 15 that is pulled out from the front opening.

The water supply valve 201, 202, 203 (refer to Fig. 6) or the bath water suction pump (not shown), the water level sensor 62 (refer to Fig. 7), etc. are provided behind the lotion container 5, and the like. Water related parts.

A water supply pipe connection port 16 from the faucet is provided on the upper cover 1e. Further, the upper cover 1e is provided with a suction pipe connection port 17 for remaining bath water.

The drum 8 of the drum type washing machine 1 is rotatably supported in the outer tub 10, and has a plurality of through holes for water passage or ventilation on the outer peripheral wall thereof, and is provided at the front end surface for taking out the laundry. Opening portion 8a. A fluid balancer 8c integrated with the drum 8 is provided outside the opening 8a. A plurality of lifting rods 8b extending in the axial direction extending in the circumferential direction are provided on the inner side of the outer peripheral wall. When the drum 8 is rotated during washing and drying, the clothes are repeated because the lifting rod 8b and the centrifugal force are along The outer peripheral wall is taken up, and then rolled by gravity. The rotation center axis of the drum 8 is inclined at a level of 0 to 30 degrees with respect to the horizontal in a horizontal manner or a side of the opening portion 8a.

The cylindrical outer tank 10 is surrounded by a drum 8 coaxially, and has an opening at the front, and has a drum motor 9 at the outer center of the rear end surface. The rotary shaft 9a of the drum motor 9 penetrates the outer tub 10 and is coupled to the drum 8.

An outer tank cover 100 is provided at an opening in front of the outer tank 10 to store water in the outer tank 10. An opening portion 101 for taking out the laundry is provided at the center of the front side of the outer tank cover 100. The opening portion 101 and the opening portion of the reinforcing material (not shown) provided before the casing of the drum type washing machine 1 are connected by a rubber bellows 11, and the outer tank 10 is water-sealed by closing the door 2.

The outer tub 10 is shock-shielded by a suspension device 13 (consisting of a coil spring or a damper) that is fixed to the susceptor 1h on the lower side. Further, the upper side of the outer tub 10 is supported by a supplement spring (not shown) provided in the upper reinforcing member, and the outer tub 10 can be prevented from falling in the front-rear direction.

The drying duct 18 is disposed on the inner side of the back surface of the drum type washing machine 1 in the longitudinal direction, and the lower portion of the duct is connected to the air inlet 10e provided below the back surface of the outer tub 10 by a rubber bellows 18a. The water-cooling/dehumidifying mechanism 230 (see FIG. 6) is housed in the drying duct 18, and the cooling water is supplied to the water-cooling/dehumidifying mechanism 230 from the water supply valve 203 (refer to FIG. 6).

The upper portion of the drying duct 18 is connected to a filter duct 19 provided on the right side of the upper portion of the drum type washing machine 1 in the front-rear direction. An opening is formed in the front surface of the filter duct 19, and the pull-out type drying filter 20 is inserted into the opening. The air that has entered the filter duct 19 from the drying duct 18 flows into the mesh filter portion of the desiccant filter 20 to remove the cotton dust.

Further, the cleaning and drying filter 20 is performed by pulling out the drying filter 20 and taking out the mesh filtering unit.

Further, an opening is formed in the lower surface of the insertion portion of the drying filter 20 of the filter duct 19, and the opening is connected to the intake port of the air blowing unit 21 via the filter duct 19 and an intake duct (not shown).

The blower unit 21 is composed of a drive fan motor 22, an impeller (not shown), and a fan case (not shown). Further, the fan heater 23 is housed in a fan case to heat the air from the impeller.

The discharge port of the blower unit 22 is connected to the air supply duct 24. The air supply duct 24 is connected to the air outlet 25 provided in the outer tank cover 100 via a rubber bellows 24a. In the present embodiment, the air blowing unit 22 is provided on the upper right side of the casing of the drum type washing machine 1, so that the air outlet 25 is provided at a position obliquely upward from the front side of the outer tank cover 100. The distance from the blower unit 22 to the blower outlet 25 is shortened as much as possible.

As a result, the air in the drum 8 forms a circulation air passage, which first passes through the outer groove 10 from the through hole of the wall surface of the drum 8, and is sucked into the expansion and contraction from the suction port 10c provided below the back surface of the outer tank 10. The tube 18a, the drying duct 18, the filter duct 19, the intake duct 21, and the air inlet of the air blowing unit 22 are blown from the discharge port of the air blowing unit 22 through the bellows 24a, and are blown from the air outlet 25 into the drum 8.

Further, a control device 60 that controls the drum motor 9, the fan motor 22, the fan heater 23, and the like is provided in the lower portion of the drum type washing machine 1.

Outer cover

The outer tank cover 100 provided in the drum type washing machine 1 of the present embodiment will be described.

Fig. 3 is a rear view showing the outer tank cover of the drum type washing machine of the embodiment.

The outer tank cover 100 includes a front side opening 101 in which the user of the drum type washing machine 1 takes out the laundry in the drum 8 and a back side opening 102 connected to the outer tank 10.

The left and right sides of the front side opening portion 101 of the outer tank cover 100 are provided with circulating water sprinkling nozzles 140a and 140b that spray the circulating water discharged from the circulation pump 210, which will be described later, into the drum 8.

Further, the upper portion of the front side opening portion 101 of the outer tank cover 100 is provided with a fresh water sprinkling nozzle 150 that sprays clean water.

Further, on the upper right side (the upper left side viewed from the back side in Fig. 3) viewed from the front side, a mounting portion 25a for blowing the air outlet 25 from the air blowing unit 24 is provided.

Further, the overflow drain port 103 is formed in the outer tank cover 100, and when the outer tank 10 and the outer tank cover 100 are continuously filled with water, the water can be prevented from overflowing from the front side opening portion 101.

<Circulating sprinkler nozzle>

Next, the circulation sprinkling nozzles 140a and 140b provided in the outer tank cover 100 will be described.

Hereinafter, the circulation sprinkling nozzle 140a will be described using FIG. 4, and the circulating sprinkling nozzle 140b is bilaterally symmetrical with the circulating sprinkling nozzle 140a, and thus the description thereof will be omitted.

Fig. 4 is a cross-sectional view taken along the line A-A in Fig. 3 for the circulating sprinkling nozzle provided in the outer tank cover.

The circulation sprinkling nozzle 140a is formed by fitting the water injection cap 143a to the outer tank cover 100, and the water injection joint 142a is connected to the front side of the outer tank cover 100.

As a result, the circulating water discharged from the circulation pump 210, which will be described later, flows through the connecting pipe (not shown) toward the manifold joint 141 (see FIG. 3), from one end of the manifold joint 141 via the connecting pipe. The water injection joint 142a flows. Then, circulating water is sprayed toward the inside of the drum 8 from the circulating water sprinkling nozzle 140a formed by the water injection cap 143a and the outer tank cover 100. Similarly, the other end of the manifold joint 141 also flows toward the water injection joint 142b via the connection pipe. Then, circulating water is sprayed toward the inside of the drum 8 from the circulating sprinkling nozzle 140b formed by the water injection cap 143b and the outer tank cover 100.

<Clean water sprinkler nozzle>

Next, the fresh water sprinkling nozzle 150 provided in the outer tank cover 100 is demonstrated using FIG.

Fig. 5 is a cross-sectional view taken along the line B-B in Fig. 3 for the fresh water sprinkling nozzle provided in the outer tank cover.

The fresh water sprinkling nozzle 150 is formed in the sprinkler cover 152 and is connected to the sprinkler pipe 151 that penetrates the outer tank cover 100.

The fresh water sprinkling nozzle 150 is opened so as to widen toward the rotation axis direction of the drum 8, and is a small opening in the rotation direction of the drum 8.

Flow path of drum type washing machine

The flow path of the drum type washing machine 1 of the present embodiment will be described using Fig. 6 .

Fig. 6 is a schematic view showing the flow path of the drum type washing machine. In addition, in the following description, the overflow drain port 103 is omitted (refer to FIG. 3).

The drum type washing machine 1 supplies water from the water supply pipe connection port 16 (see FIG. 1) toward the inside of the machine, and is diverged toward the three water supply valves 201, 202, and 203.

<First water supply valve>

The first water supply valve 201 is a solenoid valve that is opened in a washing step 302 (see Fig. 8) and a water storage washing step 310 (see Fig. 8), which will be described later, via the detergent cartridge 5, by means of a connecting pipe and a device. The water supply port 10a of the outer tank 10 is connected.

As a result, by opening the water supply valve 201, the tap water from the water supply pipe connection port 16 and the lotion which is put into the detergent box 5 together with the water supply port 10a provided in the outer tank 10, along the outer tank 10 The wall flows.

<Second water supply valve>

The second water supply valve 202 is a solenoid valve that is opened in the water sprinkling washing steps 305, 307 (see Fig. 8), which will be described later, and is connected to the sprinkler pipe 151 (see Fig. 5) via a connecting pipe.

Moreover, the flow path from the water supply valve 202 to the sprinkling water pipe 151 is branched, and is connected to the water-cooling/dehumidifying mechanism 230 in the drying duct 18 (refer to FIG. 1).

As a result, by opening the water supply valve 202, the tap water from the water supply pipe connection port 16 supplies water to the fresh water sprinkling nozzle 150, and sprays tap water into the drum 8. Further, a part of the tap water is used as washing water for washing the drying duct 18.

In addition, since the flow path toward the water-cooling/dehumidifying mechanism 230 is narrowed, the flow rate to the fresh water sprinkling nozzle 150 can be ensured, and the water can be ejected from the fresh water sprinkling nozzle 150 by the water pressure.

<third water supply valve>

The third water supply valve 203 is a solenoid valve that is opened in a drying step 313 (see FIG. 8) to be described later, and is connected to the water-cooling/dehumidifying mechanism 230 in the drying duct 18 via a connecting pipe.

As a result, by opening the water supply valve 203, the tap water from the water supply pipe connection port 16 acts as cooling water and flows to the water-cooling dehumidification mechanism 230.

Further, the water flowing through the water-cooling dehumidifying mechanism 230 of the drying duct 18 is discharged to the outside of the machine.

<Circular water channel ‧Drainage road>

The concave crotch portion 10b is provided on the bottom surface of the outer tub 10 so as to face the rotation axis direction of the drum 8.

The bottom surface of the crotch portion 10b is an inclined surface that descends from the front side toward the rear side, and a drain port 10c is provided at the lowermost portion of the rear side of the crotch portion 10b. Further, an inflow port 10d is provided on the front side of the crotch portion 10b.

The circulation pump 210 has a circulation pump motor 211 (see Fig. 7) therein, and has a suction port 210a, a natural drain port 210b, and two discharge ports 210c and 210d.

The suction port 210a is connected to the drain port 10c of the outer tub 10 via a connecting pipe. The natural drain port 210b is connected to one end of the drain valve 204 via a connecting pipe. The discharge port 210c is connected to the manifold joint 141 via a connecting pipe. The discharge port 210d is connected to the inflow port 10d of the outer tank 10 via a connecting pipe.

Further, the other end of the drain valve 204 is connected to the drain pipe.

By opening the drain valve 204, the water in the outer tank 10 will drain from the drain port 10c of the outer tank 10, through the suction port 210a of the circulation pump 210, the natural drain port 210b, and the drain valve 204, from the drain pipe to the outside of the drain pipe. .

In the state where the drain valve 204 is closed, the circulation pump 204 can positively rotate the pump motor 211, and can suck water (circulating water) from the suction port 210a, and discharge the circulating water from the discharge port 210c. The discharge port 210c of the circulation pump 210 is connected to the manifold joint 141, and is connected to the circulation sprinkling nozzle 140a and the circulating sprinkling nozzle 140b.

When the discharge pump 204 is closed, the circulation pump 210 can inhale the water (circulating water) from the suction port 210a by inverting the pump motor 211, and discharge the circulating water from the discharge port 210d.

In addition, although the circulation pump 210 described above switches the discharge port in accordance with the rotation direction of the circulation pump motor 211, the switching pump may be switched to switch between the pump motor and the discharge port that rotate only in a certain direction. Circulating pumping of the valve.

Control device for drum type washing machine

Figure 7 is a block diagram of a control device for a drum type washing machine.

The microcomputer 60 is connected to the operation key input circuit 61, the water level sensor 62, and the temperature sensor 63 connected to the switches 4b, 4c, and receives a user's key operation or various information signals.

The output of the microcomputer 60 is connected to the drive circuit 64, and is connected to the water supply valves 201, 202, 203, the drain valve 204, the circulation pump motor 211, the drum motor 9, the fan motor 22, the fan heater 23, etc., to control the opening and closing of the microcomputer 60. Or rotate and power on.

Further, it is also connected to the display 65, the light-emitting diode 66, and the buzzer 67 for notifying the user of the operation state of the drum type washing machine 1.

Operating steps of the drum type washing machine

The operation procedure of the drum type washing machine 1 of the present embodiment will be described.

Fig. 8 is a view showing the operation procedure of the drum type washing machine of the embodiment.

The operation procedure of the drum type washing machine 1 of the present embodiment includes a water supply step 301, a washing step 302, a draining step 303, an intermediate dewatering step 304, a sprinkling washing step 305, a sprinkling water removing step 306, a sprinkling washing step 307, and a middle portion. The dehydration step 308, the water supply step 309, the water storage washing step 310, the drainage step 311, the final dehydration step 312, and the drying step 313.

The steps for each step are explained below.

<Water supply step 301>

The microcomputer 60 turns on the water supply valve 201 after closing the drain valve 204. As a result, the lotion which is put into the detergent box 5 is stored in the lower portion of the outer tub 10 together with the water from the water supply valve 201.

Further, the microcomputer 60 uses the circulation pump motor 211 that reversely drives the circulation pump 210 to suck water from the drain port 10c provided at the lowermost portion on the rear side of the crotch portion 10b of the outer tub 10, and before being disposed before the crotch portion 10b. The side inlet 10d is discharged. The lotion is dissolved in water using this cycle.

The microcomputer 60 closes the water supply valve 201 after the water supply reaches the predetermined water supply amount detected by the water level sensor 62.

<Laundry step 302>

The microcomputer 60 rotates the drum 8 by rotating the drum motor 9. As a result, the laundry is lifted and lowered by the lifting rod 8b, and washing is performed by tapping.

Further, the microcomputer 60 causes the circulation pump motor 211 of the circulation pump 210 to rotate in the forward direction. As a result, the circulating water sucked from the drain port 10c provided at the lowermost portion of the rear side of the crotch portion 10b of the outer tub 10 is opposed to the circulating sprinkling nozzles 140a, 140b provided at the left and right of the outer tub 10. The laundry falling inside the drum 8 is ejected.

Here, the water sprinkling is explained using Figs. 9 to 11.

Fig. 9 is a view showing a range of spraying of circulating water in a drum as seen from above for the drum type washing machine of the comparative example. Fig. 10 is a view showing a range in which the circulating water in the drum seen from above is sprayed with respect to the drum type washing machine of the present embodiment.

In the drum type washing machine of the comparative example of Fig. 9, a circulating sprinkling nozzle is provided at the center of the upper portion of the outer tank cover, and circulating water is sprayed from the center of the upper side of the inlet side of the drum toward the lower back side of the drum. As a result, as shown in Fig. 9, the range of water sprayed is narrow (the hatched portion).

As a result, as shown in FIG. 6, the drum type washing machine 1 of the present embodiment is provided with circulating sprinkling nozzles 140a and 140b on the right and left sides of the outer tank cover 100. In this way, as shown in Fig. 10, water can be ejected toward a larger range (hatched portion). Further, by changing the number of revolutions of the circulation pump motor 211, it is possible to perform the strong and weak injection from the left and right circulating water sprinklers.

In this way, the drum type washing machine 1 of the present embodiment can circulate water from the right and left, and change the number of revolutions of the circulation pump motor 211, so that the circulating water can be made more toward the drum type washing machine of the comparative example. A wide range is used for spraying.

Fig. 11 is a schematic view seen from the front side of the drum type washing machine toward the back side with respect to the relationship between the circulating water and the laundry in the drum.

As shown in FIG. 11, in the washing step 302, the outer concentrated side 301 and the inner concentrated side 302 among the laundry 300 occur. In the drum type washing machine 1 of the present embodiment, the circulating water sprinkling nozzles 140a and 140b can simultaneously spray the circulating water toward the outer concentrated side 301 and the inner concentrated side 302.

According to the drum type washing machine 1 of the present embodiment, the lotion liquid can be circulated to the clothes in advance, so that the washing time can be shortened and the washing power can be improved.

<Draining step 303>

Once the washing step 302 is completed, the microcomputer 60 stops the drum motor 9 and the circulation pump motor 211, and opens the drain valve 204.

<Intermediate dehydration 304>

After the draining is completed, the microcomputer 60 rotates the drum 8 at a high speed by the drum motor 9. As a result, the centrifugal dewatering of the sewage infiltrated into the outer tank 10 is performed through the through hole penetrating the drum 8.

Further, the sewage flowing toward the outer tank 10 is discharged from the drain port 10c toward the outside of the machine.

<sprinkling washing step 305>

While the microcomputer 60 maintains the rotation speed of the drum 8 at a low speed (for example, 100 rpm or less), the solenoid valve 202 is opened, and the clean water is sprayed toward the clothes from the fresh water sprinkling nozzle 150 provided on the upper portion of the outer tank cover 100.

Further, the fresh water sprayed from the fresh water sprinkling nozzle 150 is not sprayed by the water pressure by driving the circulation pump 210.

Fig. 12 is a schematic view of the water in the drum, as seen from the front side of the drum type washing machine toward the back side.

Fig. 13 is a schematic cross-sectional view of the water in the drum, as seen from the side of the drum type washing machine.

As shown in Fig. 12, the fresh water sprayed from the fresh water sprinkling nozzle 150 is sprayed in a narrow range in the rotation direction of the drum 8, but the water can be blown into the drum 8 in a comprehensive manner by rotating the drum 8. Clothing.

As shown in Fig. 13, the fresh water sprayed from the fresh water sprinkling nozzle 150 is sprayed in a wide range in the direction of the rotation axis of the drum 8, so that the water can be completely blown into the clothes in the drum 8, and Since part of the blown clean water is also blown to the door 2, the lotion bubbles, cotton swarf, etc. attached to the door 2 can be washed away at the same time.

The clean water sprayed toward the clothes passes through the clothes by centrifugal force. At this time, the clean water is discharged from the through hole of the drum 8 toward the outer tub 10 together with the water permeating the laundry, and is further discharged toward the outside of the machine from the drain port 10c provided at the lower end of the outer tub 10.

<sprinkling water dehydration step 306>

After the sprinkling cleaning step 305 is completed, the microcomputer 60 turns off the water supply valve 202, and the drum motor 9 rotates the drum 8 at a high speed. As a result, the centrifugally dehydration of the sewage infiltrated into the outer tank 10 is performed through the through hole of the drum 8.

Further, the sewage flowing toward the outer tank 10 is discharged from the drain port 10c toward the outside of the machine.

<sprinkling washing step 307‧ intermediate dehydration 308>

The microcomputer 60 performs a water sprinkling step 307. The control of the microcomputer 60 is the same as the sprinkling cleaning step 305, so the description is omitted.

Thereafter, the microcomputer 60 performs an intermediate dehydration step 308. The control of the microcomputer 60 is the same as the intermediate dehydration step 304, so the description is omitted.

<Water supply step 309>

After the drain valve 204 is closed, the microcomputer 60 stores the washing water in the outer tub 10 by opening the water supply valve 201. The microcomputer 60 closes the water supply valve 201 after the water supply reaches the predetermined water supply amount detected by the water level sensor 62.

<Water storage washing step 310>

Thereafter, the microcomputer 60 rotationally drives the drum motor 9 to execute the water storage washing step 310.

<Draining step 311>

Once the water storage washing step 310 is completed, the microcomputer 60 stops the drum motor 9 and opens the drain valve 204.

<Final dehydration step 312>

After the draining is completed, the microcomputer 60 uses the drum motor 9 to rotate the drum 8 at a higher speed than the intermediate dewatering, and performs high-speed centrifugal dewatering of the laundry.

<Drying step 313>

The microcomputer 60 turns on the solenoid valve 203, and controls the drum motor 9, the fan motor 22, and the fan heater 23 to dry the laundry in the drum 8.

in conclusion

In this manner, the drum type washing machine 1 of the present embodiment can circulate the circulating water from the circulating water sprinkling nozzles 140a and 140b by changing the number of revolutions of the circulation pump motor 211 in the washing step 302. The water is sprayed over a wide range in the drum 8, and the lotion liquid can be circulated early to the clothes. Thus, the drum type washing machine 1 of the present embodiment can reduce the washing time and the cleaning power.

Further, the drum type washing machine 1 of the present embodiment can reduce the number of times of water storage washing requiring a large amount of fresh water by performing the water sprinkling washing steps 305, 307. Therefore, the water saving effect of the drum type washing machine 1 of the present embodiment can be expected.

Further, the sprinkling cleaning steps 305, 307 are compared to the water storage washing step 310, and the time of the water supply step 309 at the start of the water storage washing is not required. Further, the sprinkling washing steps 305, 307 are performed in a state where the drain valve 204 is opened, and the water dewatered by centrifugation can be sequentially discharged from the outer tank 10, so that the time of the draining step 311 after the completion of the water washing is not required. Further, the sprinkling washing steps 305, 307 are performed in a state where the drum 8 is rotated at a low speed, and by increasing the rotational speed of the drum 8, it is possible to directly move to the sprinkling washing step 307 and the intermediate dehydrating step 308. As a result, the drum type washing machine 1 of the present embodiment can shorten the washing time.

The drum type washing machine having the clothes drying function is described as the drum type washing machine of the present embodiment. However, the present invention can of course be applied to a drum type washing machine which does not have a drying function. Further, although the drum type washing machine using the tap water from the water supply pipe connection port 16 is described, the remaining bath water which is absorbed by the bath water suction pump may be used.

1. . . Drum washing machine

8. . . roller

9. . . Roller motor

10. . . Outer slot

10a. . . Water supply port

10b. . . Crotch

10c. . . Drainage port

10d. . . Inflow

twenty four. . . Air supply unit

25. . . Blowout

25a. . . Installation department

100. . . Outer cover

101. . . Front side opening

102. . . Back side opening

103. . . Overflow drain

140a. . . Circulating sprinkler nozzle

140b. . . Circulating sprinkler nozzle

141. . . Pipe joint

142a. . . Water injection joint

143a. . . Water injection cover

150. . . Water sprinkler nozzle

151. . . Sprinkler

152. . . Sprinkler cover

201. . . Water supply valve

202. . . Water supply valve

203. . . Water supply valve

204. . . Drain valve

210. . . Circulating pump

210a. . . suction point

210b. . . Natural drain

210c. . . Spit

210d. . . Spit

211. . . Circulating pump motor

230. . . Water cooling dehumidification mechanism

Fig. 1 is a perspective view showing a part of the casing in order to show the internal structure of the drum type washing machine of the embodiment.

Fig. 2 is a side sectional view showing the drum type washing machine of the embodiment.

Fig. 3 is a rear view of the outer tank cover provided in the drum type washing machine of the embodiment.

Fig. 4 is a cross-sectional view taken along the line A-A in Fig. 3 for the circulating sprinkling nozzle provided in the outer tank cover.

Fig. 5 is a cross-sectional view taken along the line B-B in Fig. 3 for the fresh water sprinkling nozzle provided in the outer tank cover.

Fig. 6 is a schematic view showing the flow path of the drum type washing machine.

Figure 7 is a block diagram of a control device for a drum type washing machine.

Fig. 8 is a view showing the operation procedure of the drum type washing machine of the embodiment.

Fig. 9 is a view showing a spray range of circulating water in the drum as seen from above for the drum type washing machine of the comparative example.

Fig. 10 is a view showing a range of circulating water sprayed in the drum as seen from above in the drum type washing machine of the present embodiment.

Fig. 11 is a schematic view showing the relationship between the circulating water in the drum and the clothes, as seen from the front side to the back side of the drum type washing machine.

Fig. 12 is a schematic view showing water splashing from the inside of the drum, as seen from the front side to the back side of the drum type washing machine.

Fig. 13 is a schematic cross-sectional view of the water in the drum as seen from the side of the drum type washing machine.

5. . . Lotion container

8. . . roller

10. . . Outer slot

10a. . . Water supply port

10b. . . Crotch

10c. . . Suction port

10d. . . Inflow

140a. . . Circulating sprinkler nozzle

140b. . . Circulating sprinkler nozzle

141. . . Pipe joint

150. . . Water sprinkler nozzle

201, 202, 203. . . Water supply valve

204. . . Drain valve

210. . . Circulating pump

210a. . . suction point

210b. . . Natural drain

210c, 210d. . . Spit

230. . . Water cooling dehumidification mechanism

Claims (2)

A drum type washing machine includes: a drum that is rotatably disposed to accommodate laundry; a drum motor that rotationally drives the drum; an outer groove that encloses the drum; and an outer groove that is provided in an opening of the outer tank a cover; a circulating pump for drawing water from the outer tank; a circulating sprinkling nozzle for injecting the circulating water sucked by the circulation pump toward the drum; and controlling the drum motor and the circulating pump, at least A control device for performing a washing step and a washing step, wherein the outer tank cover is provided with the circulating sprinkling nozzle on the left and right sides, and the control device is configured to rotate the drum motor in the washing step, and to rotationally drive the drum Simultaneously, the circulatory pump is driven to rotate, and the circulating water is rotated from the left and right circulating sprinkling nozzles provided in the outer tank cover to both of the clothes sprayers in the drum. The circulating water is sprayed from the opening side of the drum toward the deep side while changing. The drum type washing machine according to claim 1, wherein the outer tank cover includes a fresh water sprinkling nozzle that sprays clean water into the drum, and the control device is in the washing step. The drum motor is rotationally driven to rotationally drive the drum, and the fresh water is sprayed toward the laundry in the drum from the fresh water sprinkling nozzle provided in the outer tank cover.