JP2020517349A - Washing machine - Google Patents

Abstract

A washing machine including a housing (1), a washing tub (2), and a mounting plate (4) provided below the washing tub (2). The mounting plate (4) is connected to the housing (1) via a damper, and the washing tank (2) is rotatable as a water storage tank with respect to the mounting plate. A sinking type water collecting structure (18) is provided between the outer edge of the mounting plate (4) and the housing (1). One side of the water collecting structure (18) is hermetically connected to the inner wall of the housing (1) in order to collect the wash water flowing down along the inner wall of the housing (1). A sub-drainage port (17) is provided at the bottom of the water collection structure (18). The sub drain port (17) communicates with the outside of the washing machine. The above washing machine has achieved the purpose of expanding the capacity of the washing machine by omitting the outer tub structure. Further, since the problem that the washing water is scattered to the outside and the washing machine is short-circuited is avoided, the service life of the washing machine is effectively extended. [Selection diagram] Figure 1

Description

The present invention relates to a washing machine, and more particularly to a washing machine.

In general, a conventional pulsator washing machine includes a washing tub, an outer tub, a damper and a power system. During washing and dehydration, the washing tub rotates with respect to the outer tub to cause an action between the clothes and washing water, thereby achieving the purpose of washing or dehydrating the clothes. Of these, the outer tub is a water storage tub and does not come into contact with clothes during the washing process. The outer tank is mounted outside the cleaning tank to support the cleaning tank. Since the outer tub of the conventional washing machine has a larger volume than the washing tub, a large amount of washing water remains between the inner tub and the outer tub and cannot be fully utilized. Not only is this arrangement disadvantageous in saving water, but it also significantly increases the overall volume of the washing machine.

Patent Document 1 discloses a one-tub water-saving washing machine. In the washing machine, a water collecting device is provided at a tank opening of a washing tank, and the water collecting opening of the water collecting device surrounds the tank opening along the washing tank. The water collection chamber located at the tank mouth of the water collection device is connected to a plurality of drain pipes that are symmetrically arranged from top to bottom along the outer wall of the cleaning tank. At the time of dewatering, the water collecting device collects the centrifugally separated water stream by high-speed rotation, guides it downward, and discharges it. Although the outer tub is omitted in the patent, the drain pipe is located outside the tub. For this reason, when the washing machine is dehydrated, it easily collides with the inner wall of the housing, and the drainage pipe is worn and water leaks. In addition, the leaked wash water enters the equipment such as the motor as it is, and the washing machine is short-circuited and malfunctions.

In view of the above, the present invention is proposed.

Chinese Patent Application No. 99230455.5

The present invention provides a washing machine capable of eliminating defects in the prior art, expanding the volume of the cleaning tank, improving the water saving effect, and preventing short-circuiting of electric equipment due to scattering of cleaning water to the outside. The purpose is to do.

In order to achieve the above object, the present invention uses the following technical solutions.

A washing machine, which includes a housing, a cleaning tub, and a mounting plate provided at a lower portion of the cleaning tub, the mounting plate being connected to the housing through a damper, and the cleaning tub serving as a water tank in the cleaning stage. In the dehydration stage, it can be rotated with respect to the mounting plate. A sinking type water collecting structure is provided between the outer edge of the mounting plate and the housing, and the outer peripheral side of the water collecting structure is hermetically connected to the inner wall of the housing.

Further, a sub drain is provided at the bottom of the water collecting structure, and the sub drain communicates with the outside of the washing machine.

Further, the horizontal height of the connection point between the outer peripheral side of the water collecting structure and the inner wall of the housing is lower than the horizontal height of the connection point between the inner peripheral side and the mounting plate.

Furthermore, the inner peripheral side of the water collecting structure is elastically connected to the outer edge of the mounting plate.

Further, the water collecting structure includes a water receiving ring provided between the mounting plate and the housing, the water receiving ring having an inner peripheral side connected to the outer edge of the mounting plate through a plurality of elastic suspension members, and an outer peripheral surface of the water receiving ring. The side is hermetically connected to the mounting structure provided on the inner wall of the housing, the upper part of the water receiving ring is an opening, and the sub-drain is provided on the bottom.

Further, the elastic suspension member is a tension spring suspended vertically, and the tension spring has an upper end connected to a side edge of the mounting plate and a lower end connected to a side wall of the water receiving ring.

Further, the mounting structure includes a horizontal portion that horizontally extends from the inner wall of the housing, and an annular flange that is connected to the horizontal portion and extends downward, and one side wall of the water receiving ring has one of the annular flanges attached to it. It is fixed on the side facing away from the plate and is fixed to the annular flange by a pressing method by a fastening ring.

Further, a drainage path is provided on the peripheral wall of the cleaning tank, and the drainage path drains from the top to the bottom.

Further, a water collecting ring is provided at the upper end of the washing tank, a dehydration port is provided inside the water collecting ring, and the drainage path has an upper end communicating with the water collecting ring and a lower end of the washing tank. It communicates with the drain provided at the bottom.

Furthermore, a valve plug that controls the opening and closing of the drain port is attached to the drain port at the bottom of the cleaning tank, the valve plug is controlled to close during the cleaning stage, and the valve plug is opened during the drainage and dehydration stages. Controlled to do so.

Further, a protruding water blocking ring is provided on the upper surface of the mounting plate, and the water blocking ring has a recessed groove structure for accommodating wash water by extending a certain height upward from the upper surface of the mounting plate. The water outlet of the drainage path is formed inside the groove structure, and the water collecting structure is located outside the water stop ring.

Furthermore, a main drain is provided on the mounting plate and inside the water stop ring, and the main drain communicates with the outside of the washing machine through the drain pipe of the washing machine, and at the bottom of the water collecting structure. A sub drain is provided, and the sub drain is connected to the drain of the washing machine through a branch pipe.

Further, the drainage path includes a water channel housing and a part of the washing tank wall, and a groove penetrating vertically is provided on a side of the water channel housing facing the washing tank wall, and the water channel housing is engaged with the washing tank wall. Then, the water flow path is surrounded with the wall of the cleaning tank.

Further, a water stop plate for guiding the wash water to the drainage path is provided in the water collection ring, and the water stop plate is located above the water supply port in the drainage path and is inclined so as to form a constant angle with the horizontal plane. Will be installed.

Furthermore, the side of the water collection ring facing the axial center of the cleaning tank is an arcuate surface, and the arcuate surface gradually extends from the bottom to the top of the cleaning tank along the axial direction of the cleaning tank. The drainage port of the water collection ring is curved toward the center and is provided at the bottom base end of the arcuate surface.

Further, the mounting plate is provided with a lock mechanism, the lock mechanism is located at the bottom of the cleaning tank, and the locking mechanism engages with the cleaning tank so as to restrict the rotation of the cleaning tank during the cleaning step.

The following beneficial effects can be obtained by using the above technical solution in the present invention.

Since the washing machine of the present invention omits the outer tub structure and the washing tub is designed as a water storage tub structure, the utilization rate of the washing water can be improved and the amount of the washing water used can be reduced. Further, by omitting the outer tub, the washing tub can be provided with a larger volume, so that the amount of clothes to be washed can be increased accordingly, and the purpose of expanding the capacity of the washing machine can be achieved. On the other hand, between the mounting plate of the present invention and the housing, there is provided a water collecting structure for collecting the wash water flowing down along the inner wall of the housing. Therefore, the problem that the washing water is scattered to the outside and the washing machine is short-circuited is avoided, and the service life of the washing machine is effectively extended.

FIG. 1 is a cross-sectional view of the structure of the present invention. FIG. 2 is a structural diagram of a part of the drainage path of the present invention. FIG. 3 is an enlarged view of the Y portion of FIG. FIG. 4 is an enlarged view of the portion K in FIG.

Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the drawings.

As shown in FIG. 1, the washing machine includes a casing 1, a washing tub 2 for containing clothes to be washed, a power unit 3 for rotating the washing tub 2, a mounting plate 4 mounted below the washing tub 2, It also includes a damper that connects the mounting plate 4 and the housing 1. The cleaning tank 2 is rotatably provided in the housing 1. The cleaning tank 2 is placed on the mounting plate 4 and rotatable with respect to the mounting plate 4. The cleaning tank 2 is used as a water storage tank for storing cleaning water. The mounting plate 4 is used to support the cleaning tank 2, and is movably connected to the housing 1 via a damper. During cleaning or dehydration, vibration occurs in the cleaning tank 2 and the mounting plate 4, and the vibration is transmitted to the damper and absorbed.

Combining FIG. 4, a drain port is provided at the bottom of the cleaning tank 2. Further, a protruding water blocking ring 12 is provided on the upper surface of the mounting plate 4. The water stop ring 12 protrudes from the upper surface of the mounting plate 4 toward the cleaning tank 2 and extends a certain height to form a recessed groove structure for containing cleaning water. A main drain port 16 is provided on the mounting plate 4 and inside the water stop ring 12, and communicates with a drain port at the bottom of the cleaning tank 2. Further, a water collecting structure 18 is provided between the outer edge of the mounting plate 4 and the housing 1. At least one side of the water collecting structure 18 is connected to the inner wall of the housing 1 in order to collect the wash water flowing down along the inner wall of the housing 1. Further, a sub drain port 17 is provided at the bottom of the water collecting structure 18. The main drain 16 and the sub drain 17 communicate with the outside of the washing machine.

Specifically, the main drain port 16 communicates with the outside of the washing machine through the drain pipe 6 of the washing machine, and the sub drain port 17 is connected to the drain pipe 6 of the washing machine through a branch pipe 19.

A balance ring 7 is provided on the upper end of the cleaning tank 2, and a water collecting ring 8 is provided below the balance ring 7. Further, a drainage path 5 is provided inside the peripheral wall of the cleaning tank 2, and the water collection ring 8 communicates with the drainage path 5. A dehydration port is provided inside the water collection ring 8 or on the side facing the cleaning tank 2. The drainage path 5 is provided vertically and has an upper end communicating with the water collecting ring 8 and a lower end communicating with a drainage port at the bottom of the cleaning tank. The cleaning tank 2 has a constant taper. When the cleaning tank 2 rotates at a high speed, the cleaning water in the cleaning tank 2 rises upward along the cleaning tank wall by the action of centrifugal force, and after rising to a certain height, from the dewatering port of the water collecting ring 8 to the water collecting ring 8 Enter inside. The wash water flows annularly in the water collecting ring 8, but when the rotation speed of the wash tank 2 decreases, the wash water flows downward along the drainage path 5 and is discharged from the drain port at the bottom of the wash tank.

Referring to FIGS. 2 and 3, preferably, a water stop plate 13 for guiding the wash water to the drainage path 5 is provided in the water collection ring 8. The water stop plate 13 is located above the water supply port in the drainage path 5, and is installed so as to be inclined at a certain angle with the horizontal plane. The wash water collides with the water stop plate 13 when flowing in an annular shape in the water collection ring 8. Since the side of the water stop plate 13 facing the water flow direction is inclined downward, the flow direction of the water flow changes when it collides with the water stop plate 13, and the flow direction along the circumferential direction of the tank moves downward along the tank wall. It changes to flow and enters the drainage path 5. Since the flow direction of the water flow in the water collection ring 8 is changed by the water stop plate 13, the water flow in the water collection ring 8 can be made to flow into the drainage path 5 during high-speed dehydration. This avoids a situation in which the amount of water in the water collection ring 8 becomes excessive.

A valve plug 15 is attached to the drain port at the bottom of the cleaning tank 2. The valve plug 15 is located inside the water stop ring 12. In the washing stage, the valve plug 15 is in the closed state, while in the dehydration stage, the valve plug 15 is in the open state. When the valve plug 15 is opened, the cleaning water in the cleaning tank 2 flows into the groove structure and is discharged from the drain pipe 6 of the washing machine to the outside of the washing machine.

Specifically, the water collecting structure 18 is elastically connected to the outer edge of the mounting plate 4. The water collecting structure 18 includes a water receiving ring 21 provided between the mounting plate 4 and the housing 1. The upper part of the water receiving ring 21 is an open port, and the sub drain port 17 is provided on the bottom part. The water receiving ring 21 has an annular structure, one side of which is connected to the outer edge of the mounting plate 4 via a plurality of elastic suspension members 20, and the other side of which is sealed to a mounting structure which extends from the inner wall of the housing 1. Connected. As the mounting plate 4 moves up and down, the elastic suspension member 20 deforms accordingly to adapt to the movement of the mounting plate 4.

Preferably, the elastic suspension member 20 is a tension spring. The tension spring has an upper end connected to the edge of the mounting plate 4 and a lower end connected to the side wall of the water receiving ring 21. The tension springs are plural in number and are evenly arranged on the inner peripheral side of the water receiving ring 21.

The mounting structure includes a horizontal portion 23 extending horizontally from the inner wall of the housing 1, and an annular flange 24 connected to the horizontal portion 23 and extending downward. One side wall of the water receiving ring 21 is fixed to the side of the annular flange 24 facing the mounting plate 4, and is fixed to the annular flange 24 by the fastening ring 22 by a pressing method.

The mounting structure may be integrally molded with the housing 1, or may be manufactured separately and then mounted on the inner wall of the housing 1 to seal the connection point.

Preferably, the water stop ring 12 is substantially higher than the bottom surface of the cleaning tank 2, and a large gap is maintained between the water blocking ring 12 and the outer peripheral wall of the cleaning tank 2 so as not to collide when the cleaning tank 2 rotates. Has been done.

The lower end of the drainage path 5 is connected to the drainage port at the bottom of the cleaning tank 2. The drainage port is located below the pulsator of the washing machine, and the drainage path 5 extends to the drainage port location. The drainage path 5 includes a water channel housing 11 and a part of the washing tank wall. A groove that penetrates vertically is provided on the side of the water channel housing 11 that faces the cleaning tank wall. The water channel housing 11 engages with the cleaning tank wall and surrounds the water flow path together with the cleaning tank wall. The water channel housing 11 is similar to the water channel structure in the inner tub of the conventional washing machine, but the upper end of the water channel housing 11 is extended to the water collecting ring 8 and connected, and the axis line of the washing tank 2 of the water channel housing 11 is connected. It is different in that the side facing to has no spout.

A plurality of grooves may be provided in parallel with the water channel housing 11 to form a plurality of water flow paths.

Preferably, the water channel housing 11 is detachably attached to the cleaning tank 2. A hook is provided at the bottom of the water channel housing 11, and an engaging port that engages with the hook is provided on the tank wall of the cleaning tank 2. Further, the water channel housing 11 is provided with a screw hole in the upper portion, and is fixedly connected to the cleaning tank 2 with a screw. When mounting the water channel housing 11, the water channel housing 11 is positioned and supported by engaging the hook with the engagement port, and then the water channel housing 11 is fixed to the cleaning tank 2 with screws.

Preferably, on the side of the water channel housing 11 that faces the axis of the cleaning tank, a protrusion or a streak that contacts and rubs against clothes is provided. In the washing process, the surface of the water channel housing 11 that faces the axis of the washing tub may have a function of rubbing against clothes.

In order to prevent the washing water from overflowing from the washing tank 2 during dewatering, the side of the water collecting ring 8 facing the axial center of the washing tank has an arcuate surface. The arcuate surface gradually curves from the bottom toward the center of the cleaning tank 2 along the axial direction of the cleaning tank 2 to gradually reduce the opening at the upper end of the cleaning tank 2. The dehydration port of the water collecting ring 8 is provided at the bottom base end of the arcuate surface. When the wash water rises along the tank wall, the arcuate surface of the water collection ring 8 acts to prevent the water flow from continuing to rise, and collects the water flow to flow into the dewatering port of the water collection ring 8.

The power unit is mounted on the bottom of the mounting plate 4 and includes a motor and a reduction clutch. The rotation shaft of the motor is connected to the bottom of the cleaning tank via a deceleration clutch, and drives the cleaning tank 2 to rotate. The output shaft of the deceleration clutch penetrates the mounting plate 4 and is connected to the cleaning tank 2. At least one dynamic seal is provided between the output shaft and the mounting plate 4. Preferably, the bottom of the mounting plate 4 is provided with a plurality of reinforcing ribs protruding downward.

Further, a lock mechanism 14 is provided on the upper surface of the mounting plate 4. The lock mechanism 14 is located at the bottom of the cleaning tank 2 and engages with the cleaning tank 2 to restrict the rotation of the cleaning tank 2. The lock mechanism 14 can lock the cleaning tank 2 and prevent the cleaning tank 2 from rotating. In the cleaning stage, the lock mechanism 14 locks the cleaning tank 2 so that the cleaning tank 2 cannot rotate. On the other hand, in the dehydration stage, the lock mechanism 14 unlocks the cleaning tank 2 so that it can rotate.

The damper includes a suspension rod 9 and a suspension rod base 10. The suspension rod 9 has an upper end connected to the housing 1 and a lower end connected to the suspension rod base 10. An engagement opening that engages with the suspension rod base 10 is provided at the edge of the mounting plate 4. The suspension rod base 10 is engaged in the engagement opening and is located below the mounting plate 4. A spring is mounted in the suspension rod base 10. The spring in the suspension rod base 10 is compressed under the action of gravity between the mounting plate 4 and the cleaning tank 2, and exhibits a vibration control function when the cleaning tank 2 vibrates. Since the mounting plate 4 is located below the cleaning tank 2, the suspension rod base 10 is located below the cleaning tank 2 and does not occupy the space between the cleaning tank 2 and the housing 1. Therefore, it is advantageous for expanding the volume of the cleaning tank 2.

In the dehydration process of the present invention, the water in the cleaning tank 2 is discharged from the drain port at the bottom of the cleaning tank 2 before the dehydration, and then the cleaning tank 2 is rotationally driven at high speed by the motor. Then, the water remaining in the cleaning tank 2 rises along the cleaning tank wall by the action of the centrifugal force and enters the water collecting ring 8. In the water collection ring 8, the flow direction of the water flow changes due to the action of the water blocking plate 13, and flows into the drainage path 5 downward. Then, when it flows out from the washing tank 2 along the drainage path 5, it falls into a concave groove structure surrounded by the water stop ring 12 and is discharged to the outside of the washing machine through the main drainage port 16 and the drainage pipe 6 of the washing machine. .. When a part of the cleaning water scattered from the cleaning tank 2 flows into the water collecting structure 18 along the inner wall of the housing 1, the cleaning water is discharged from the sub drainage port 17.

Further, the mounting plate 4 and the water blocking ring 12 are integrally designed to form a tank-like structure.

The above is a preferred embodiment of the present invention. Various modifications and improvements can be made by those skilled in the art without departing from the principle of the present invention, and these are also regarded as the scope of protection of the present invention. For example, the drainage path may be provided on the outer peripheral wall of the cleaning tank, and the change of the position does not affect the understanding of the technical solution of the present invention by those skilled in the art.

1 Case 2 Cleaning Tank 3 Power Device 4 Mounting Plate 5 Drainage Path 6 Drain Pipe 7 Balance Ring 8 Water Collection Ring 9 Suspension Rod 10 Suspension Rod Base 11 Water Channel Housing 12 Water Stop Ring 13 Water Stop Plate 14 Lock Mechanism 15 Valve Plug 16 Main drainage port 17 Sub drainage port 18 Water collecting structure 19 Branch pipe 20 Elastic suspension member 21 Water receiving ring 22 Fastening ring 23 Horizontal part 24 Annular flange

Claims (16)

A housing, a cleaning tank, and a mounting plate provided below the cleaning tank, wherein the mounting plate is connected to the housing through a damper, and the cleaning tank serves as a water storage tank during the cleaning step and a dehydration step. Then, a washing machine that can rotate with respect to the mounting plate,
A sinking type water collecting structure is provided between an outer edge of the mounting plate and the housing, and an outer peripheral side of the water collecting structure is hermetically connected to an inner wall of the housing. The washing machine according to claim 1, wherein a sub drainage port is provided at a bottom portion of the water collecting structure, and the sub drainage port communicates with an outside of the washing machine. The horizontal height of a connection point between the outer peripheral side of the water collecting structure and the inner wall of the housing is lower than the horizontal height of a connection point between the inner peripheral side and the mounting plate. The washing machine described in. The washing machine according to claim 1, wherein an inner peripheral side of the water collecting structure is elastically connected to an outer edge of the mounting plate. The water collecting structure includes a water receiving ring provided between the mounting plate and the housing, and the water receiving ring has an inner peripheral side connected to an outer edge of the mounting plate via a plurality of elastic suspension members, The outer peripheral side is hermetically connected to a mounting structure provided on the inner wall of the housing, the upper part of the water receiving ring is an open port, and the sub-drain port is provided on the bottom part. The washing machine according to any one of 1. The elastic suspension member is a tension spring suspended vertically, and the tension spring has an upper end connected to a side edge of the mounting plate and a lower end connected to a side wall of the water receiving ring. The washing machine according to Item 5. The mounting structure includes a horizontal portion that horizontally extends from the inner wall of the housing, and an annular flange that is connected to the horizontal portion and extends downward, and one side wall of the water receiving ring is one of the annular flanges. The washing machine according to claim 5, wherein the washing machine is fixed to the mounting plate on its back side and is fixed to the annular flange by a pressing method by a fastening ring. The washing machine according to claim 1, wherein a drainage path is provided on a peripheral wall of the cleaning tank, and the drainage path drains from the top to the bottom. A water collecting ring is provided at an upper end of the cleaning tank, a dehydration port is provided inside the water collecting ring, and the drainage path has an upper end communicating with the water collecting ring and a lower end of the cleaning tank. The washing machine according to claim 8, wherein the washing machine communicates with a drain port provided at the bottom. A valve plug that controls the opening and closing of the drain port is attached to the drain port at the bottom of the cleaning tank, the valve plug is controlled to close during the cleaning stage, and the valve plug is opened during the drainage and dehydration stages. The washing machine according to claim 9, wherein the washing machine is controlled to operate. A protruding water blocking ring is provided on the upper surface of the mounting plate, and the water blocking ring has a groove structure for containing cleaning water by extending a certain height upward from the upper surface of the mounting plate. 9. The washing machine according to claim 8, wherein the water discharge port of the drainage path is formed inside the groove structure, and the water collecting structure is located outside the water stop ring. A main drain is provided on the mounting plate and inside the water stop ring, the main drain communicates with the outside of the washing machine through the drain pipe of the washing machine, and at the bottom of the water collecting structure. The washing machine according to claim 11, wherein a sub-drainage port is provided, and the sub-drainage port is connected to a drain pipe of the washing machine through a branch pipe. The drainage path includes a water channel housing and a part of the cleaning tank wall, and a groove that vertically penetrates is provided on a side of the water channel housing facing the cleaning tank wall, and the water channel housing is provided on the cleaning tank wall. The washing machine according to claim 8, wherein the washing machine wall is engaged with the water tank to surround the water flow path. A water stop plate for guiding the wash water to the drainage path is provided in the water collection ring, and the water stop plate is located above the water supply port in the drainage path and is inclined so as to form a constant angle with the horizontal plane. The washing machine according to claim 9, wherein the washing machine is installed. The side of the water collection ring facing the axial center of the cleaning tank is an arcuate surface, and the arcuate surface gradually extends from the bottom to the top along the axial direction of the cleaning tank. 10. The washing machine according to claim 9, wherein the washing port is curved toward the center of the water collecting ring, and the dewatering port of the water collecting ring is provided at the bottom base end of the arcuate surface. Further, the mounting plate is provided with a lock mechanism, the lock mechanism is located at a bottom portion of the cleaning tank, and the locking mechanism is engaged with the cleaning tank so as to restrict rotation of the cleaning tank during a cleaning step. The washing machine according to claim 1, wherein: