阅读说明：本技术 一种洗衣机及控制方法 (Washing machine and control method ) 是由 李福军 徐杰 方大丰 高秋英 于 2020-05-29 设计创作，主要内容包括：本发明公开了一种洗衣机,其包括,内桶；内桶设有排水口,内桶上安装有受内桶旋转离心力作用而产生相对摆动的摆杆,摆杆上套接有可相对滑动的排水阀塞。通过上述设置,利用受内桶高速旋转所产生离心力而驱动摆杆上下摆动、使摆杆带动套接的排水阀塞上下移动而对应开闭排水口,达到利用离心力对无孔内桶的排水口可控开闭操控的效果。本发明还提供了一种洗衣机的控制方法,洗衣机执行进水或洗涤、漂洗程序时,内桶以低于设定值的转速旋转,摆杆在自身重力作用下拉拽排水阀塞堵塞排水口；洗衣机执行排水或脱水程序时,内桶以高于设定值的转速旋转,摆杆受旋转离心力作用向上摆动,推动排水阀塞上移打开排水口。(The invention discloses a washing machine, which comprises an inner barrel; the inner barrel is provided with a water outlet, the inner barrel is provided with a swing rod which is relatively swung under the action of the rotating centrifugal force of the inner barrel, and the swing rod is sleeved with a drainage valve plug which can relatively slide. Through the arrangement, the oscillating bar is driven to swing up and down by utilizing the centrifugal force generated by the high-speed rotation of the inner barrel, so that the oscillating bar drives the sleeved drainage valve plug to move up and down to correspondingly open and close the drainage outlet, and the effect of controlling the controllable opening and closing of the drainage outlet of the non-porous inner barrel by utilizing the centrifugal force is achieved. The invention also provides a control method of the washing machine, when the washing machine executes the water inlet or washing and rinsing procedures, the inner barrel rotates at the rotating speed lower than the set value, and the swing rod pulls the drain valve plug to block the drain port under the action of the self gravity; when the washing machine executes the drainage or dehydration program, the inner barrel rotates at a rotating speed higher than a set value, and the swing rod swings upwards under the action of the rotating centrifugal force to push the drainage valve plug to move upwards to open the drainage outlet.)

1. A washing machine includes an inner tub; the method is characterized in that: the inner barrel is provided with a water outlet, the inner barrel is provided with a swing rod which is relatively swung under the action of the rotating centrifugal force of the inner barrel, the swing rod is sleeved with a drainage valve plug which can relatively slide, and the drainage valve plug is limited by the water outlet and is driven by the swing rod to move up and down to open and close the water outlet.

2. The washing machine as claimed in claim 1, wherein the drain port is formed at the bottom of the inner tub, and the swing lever is installed at the bottom of the inner tub to be swingable up and down; the water discharge valve plug is sleeved on the swing rod and is driven by the swing rod to move up and down to correspondingly open and close the water discharge port.

3. The washing machine as claimed in claim 2, wherein one end of the swing lever is hinged to the bottom of the inner tub, and the axis of the hinge shaft is disposed in a horizontal direction; the other end of the swing rod is freely arranged; the swing rod is gradually inclined downwards from the hinged end to the free end.

4. The washing machine as claimed in claim 2, wherein the drain valve plug includes a valve plug disposed inside the inner tub above the drain opening to close or open the drain opening correspondingly; the lower end of the valve plug is connected with a connecting rod, the connecting rod is vertically arranged, the lower end of the connecting rod penetrates through the water outlet, and the lower end of the connecting rod is sleeved with the swing rod;

preferably, the lower end of the swing rod is connected with an insertion sleeve capable of rotating relatively, and the swing rod is connected with the insertion sleeve in an insertion manner capable of sliding relatively.

5. A washing machine as claimed in any one of claims 1 to 4, wherein the swing link extends radially of the inner tub and is inclined gradually downwardly towards the outer peripheral side of the inner tub; one end of the swing rod close to the axis of the inner barrel is rotatably connected with the bottom of the inner barrel, and the other end of the swing rod close to the periphery of the bottom of the inner barrel is freely arranged; the water outlet is arranged at the periphery of the bottom of the inner barrel.

6. A washing machine as claimed in any one of claims 1 to 4 wherein a counterweight is provided at the free end of the swing lever;

preferably, the water discharge valve plug is provided with an inserting hole for inserting the swing rod, and the radial size of the balancing weight is larger than the aperture of the inserting hole.

7. A washing machine as claimed in any one of claims 1 to 4 wherein the inner tub is provided with a self-locking means at its bottom for locking and unlocking the drain valve plug.

8. A washing machine as claimed in any one of claims 1 to 4 wherein a plurality of drainage ports are provided in the inner tub bottom of the inner tub, each drainage port having a drainage valve plug mounted therein in one-to-one correspondence, each drainage valve plug being connected to the inner tub via a swing link;

preferably, the water outlets are symmetrically arranged relative to the axis of the inner barrel.

9. A control method of a washing machine according to any one of claims 1 to 8, characterized in that: when the washing machine executes water inlet or washing and rinsing procedures, the inner barrel rotates at a rotating speed lower than a set value, and the swing rod pulls the drain valve plug downwards to block the drain port under the action of the gravity of the swing rod; when the washing machine executes a drainage or dehydration procedure, the inner barrel rotates at a rotating speed higher than a set value, the swing rod and the inner barrel rotate together, and the swing rod swings upwards under the action of rotating centrifugal force to push the drainage valve plug to move upwards and open the drainage outlet.

10. The control method of a washing machine as claimed in claim 9, wherein when the washing machine performs the water inlet or washing and rinsing processes, the swing link is lowered to the lowest position by its own weight, and after the drain port is blocked by the drain valve plug, the self-locking device provided on the inner tub locks the drain valve plug, and the drain valve plug is fixed relatively to the inner tub;

when the washing machine executes a drainage or dehydration procedure, the self-locking device arranged on the inner barrel unlocks the drainage valve plug, the drainage valve plug is in a free unlocking state, the inner barrel rotates at a rotating speed larger than a set value, the swing rod is driven by centrifugal force to move upwards, and the drainage valve plug is pushed to move upwards to open the drainage outlet.

Technical Field

The invention belongs to the field of washing machines, particularly relates to a washing-free washing machine with washing water not flowing between an inner barrel and an outer barrel in a cross mode, and particularly relates to a control method of the washing machine.

Background

The washing machine in the prior art generally comprises an inner tub and an outer tub, wherein the inner tub is arranged in the outer tub, the outer tub is used for containing washing water, and clothes are placed in the inner tub; the inner tub is internally provided with a washing structure such as a pulsator, and the inner tub and/or the pulsator are/is rotated by the driving of a motor to generate washing water current to wash the laundry. In the washing process, the inner barrel is connected with the outer barrel through the dewatering holes arranged on the inner barrel, so that the inner barrel and the outer barrel are filled with water, and therefore, the conventional washing machine in the prior art has the following three problems:

firstly, water is wasted, and only water in the inner barrel is needed in actual work;

secondly, bacteria are bred, water at the joint of the inner barrel and the outer barrel cannot be completely discharged and cannot be cleaned, and the bacteria breeding of the outer barrel and the pollution to clothes can be caused after the outer barrel is used for a long time;

thirdly, the capacity of the washing machine is greatly reduced due to the existence of the outer barrel, and for the conventional washing machine, the whole structure of the washing machine can only be enlarged due to the expansion, so that the living space of a user is excessively occupied, and the washing machine is extremely unfriendly for small-sized users.

In order to overcome the above problems, the applicant proposed a washing machine with a non-porous inner tub, in which the inner tub is provided with a water container having at least a middle lower portion without dewatering holes, so that washing water is contained in the inner tub, and the inner tub has dual functions of water containing and rotary washing at the same time, thereby preventing the problem that the washing water flows between the inner and outer tubs and causes uncleanness and pollution to the cavity between the inner and outer tubs.

However, because the inner barrel without holes is the inner barrel for containing water, the washing water contained in the inner barrel needs to be discharged outside after washing is finished; therefore, how to arrange a control structure convenient for the controllable drainage of the non-porous inner barrel becomes a technical problem which needs to be solved urgently.

The present invention has been made in view of this situation.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a washing machine to realize the purpose of controlling the opening and closing of the water outlet of the non-porous inner barrel, in particular to provide a centrifugal valve body structure for opening the valve plug at the water outlet by utilizing the rotating centrifugal force of the non-porous inner barrel so as to solve the problem of controllable switching between water storage and water discharge of the non-porous inner barrel.

In order to solve the technical problems, the invention adopts the technical scheme that:

a washing machine includes an inner tub; the inner barrel is provided with a water outlet, the inner barrel is provided with a swing rod which is relatively swung under the action of the rotating centrifugal force of the inner barrel, the swing rod is sleeved with a drainage valve plug which can relatively slide, and the drainage valve plug is limited by the water outlet and is driven by the swing rod to move up and down to open and close the water outlet.

Furthermore, the water outlet is positioned at the bottom of the inner barrel, and the swing rod can be arranged below the bottom of the inner barrel in an up-and-down swinging manner; the water discharge valve plug is sleeved on the swing rod and is driven by the swing rod to move up and down to correspondingly open and close the water discharge port.

Furthermore, one end of the swing rod is hinged with the bottom of the inner barrel, and the axis of the hinged shaft is arranged along the horizontal direction; the other end of the swing rod is freely arranged; the swing rod is gradually inclined downwards from the hinged end to the free end.

Furthermore, the drain valve plug comprises a valve plug which is arranged in the inner barrel and above the drain opening and correspondingly closes or opens the drain opening; the lower end of the valve plug is connected with a connecting rod, the connecting rod is vertically arranged, the lower end of the connecting rod penetrates through the water outlet, and the lower end of the connecting rod is sleeved with the swing rod; preferably, the lower end of the swing rod is connected with an insertion sleeve capable of rotating relatively, and the swing rod is connected with the insertion sleeve in an insertion manner capable of sliding relatively.

Further, the swing rod extends along the radial direction of the inner barrel, and the swing rod gradually inclines downwards towards the outer peripheral side of the inner barrel; one end of the swing rod close to the axis of the inner barrel is rotatably connected with the bottom of the inner barrel, and the other end of the swing rod close to the periphery of the bottom of the inner barrel is freely arranged; the water outlet is arranged at the periphery of the bottom of the inner barrel.

Furthermore, the free end of the swing rod is provided with a balancing weight which increases the centrifugal force borne by the swing rod when the inner barrel rotates; preferably, the drain valve plug is provided with an inserting hole for inserting the swing rod, and the radial size of the balancing weight is larger than that of the inserting hole so as to limit the drain valve plug and prevent the drain valve plug from being separated from the swing rod.

Further, the bottom of the inner barrel is provided with a self-locking device for locking and unlocking the drainage valve plug.

Furthermore, a plurality of water discharge ports are arranged on the inner barrel bottom of the inner barrel, water discharge valve plugs are respectively arranged at the water discharge ports in a one-to-one correspondence mode, and the water discharge valve plugs are respectively connected with the inner barrel through swing rods; preferably, the water outlets are symmetrically arranged relative to the axis of the inner barrel.

The invention also provides a control method of the washing machine, when the washing machine executes water inlet or washing and rinsing procedures, the inner barrel rotates at a rotating speed lower than a set value, and the swing rod pulls the drain valve plug downwards under the action of the self gravity to block the drain outlet; when the washing machine executes a drainage or dehydration procedure, the inner barrel rotates at a rotating speed higher than a set value, the swing rod and the inner barrel rotate together, and the swing rod swings upwards under the action of rotating centrifugal force to push the drainage valve plug to move upwards and open the drainage outlet.

Further, when the washing machine executes water inlet or washing and rinsing procedures, the swing rod descends to the lowest position under the self weight, and after the water discharge valve plug blocks the water discharge opening, the self-locking device arranged on the inner barrel locks the water discharge valve plug which is relatively fixed with the inner barrel;

when the washing machine executes a drainage or dehydration procedure, the self-locking device arranged on the inner barrel unlocks the drainage valve plug, the drainage valve plug is in a free unlocking state, the inner barrel rotates at a rotating speed larger than a set value, the swing rod is driven by centrifugal force to move upwards, and the drainage valve plug is pushed to move upwards to open the drainage outlet.

After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.

Through the arrangement, the swinging rod is driven to swing up and down by utilizing the centrifugal force generated by the high-speed rotation of the inner barrel, the swinging rod drives the sleeved drainage valve plug to move up and down so as to realize the effect of correspondingly opening and closing the drainage outlet, and further the remarkable technical progress of controlling the controllable opening and closing of the drainage outlet of the non-porous inner barrel by utilizing the centrifugal force is realized.

Meanwhile, the invention has simple structure, simple method and obvious effect and is suitable for popularization and use.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic view of a drain opening of a washing machine according to an embodiment of the present invention;

fig. 2 is a schematic structural view illustrating the washing machine with the drain outlet opened according to the embodiment of the present invention.

Description of the main elements in the figures: 1. an inner barrel; 3. an inner barrel support; 4. a swing rod; 5. a drain valve plug; 6. a balancing weight; 7. a water outlet; 8. a self-locking device; 31. a water collection tank; 51. a valve plug; 52. a connecting rod; 81. a latch bolt; 82. a balancing weight; 83. a return spring; 84. a support; 85. a locking protrusion; 101. the barrel mouth of the inner barrel; 102. the side wall of the inner barrel; 103. the bottom of the inner barrel.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 2, the present embodiment discloses a washing machine, which includes: the inner barrel comprises a shell, wherein an inner barrel 1 is arranged in the shell, and the axis of the inner barrel 1 is vertically arranged; an opening at the top end of the inner barrel 1 is arranged to form an inner barrel opening 101, the bottom end is sealed to form an inner barrel bottom 103, and the inner barrel opening and the inner barrel bottom are connected through an inner barrel side wall 102; at least the middle and lower cylinder walls of the inner cylinder 1 are not provided with through holes, so that the inner part of the inner cylinder 1 forms a water container with an open top. Meanwhile, the upper end of the washing machine shell is provided with a door cover which can be opened outwards, so that the clothes can be thrown into the inner barrel 1 from the barrel opening 101 of the inner barrel after the door cover is opened. The lower part of the inner barrel 1 is arranged in the shell of the washing machine through an inner barrel supporting piece 3, the inner barrel supporting piece 3 and the inner barrel 1 are coaxially arranged, and the inner barrel supporting piece 3 is connected with the shell of the washing machine through a damping suspension rod or a damping support leg, so that the aim that the inner barrel supporting piece 3 can be arranged in the shell of the washing machine in a vibrating way is fulfilled; meanwhile, the center of the inner tub bottom 103 is coaxially disposed with a motor shaft of a driving motor of the washing machine to drive the inner tub 1 to rotate, and the inner tub 1 and the driving motor are fixedly installed on the inner tub supporting member 3. Preferably, the inner tub bottom 103 and the driving motor are respectively disposed at the upper and lower sides of the inner tub supporting member 3, the driving motor is fixedly connected to the inner tub supporting member 3, a motor shaft of the driving motor passes through the inner tub supporting member 3 through a bearing and is coaxially and fixedly connected to the inner tub bottom 103, and the motor shaft of the driving motor can rotate relative to the inner tub supporting member 3, so that the inner tub 1 and the driving motor are mounted on the inner tub supporting member 3, and the inner tub 1 can rotate independently under the action of the driving motor to wash the inner clothes.

In addition, the inner barrel 1 is provided with a stirring structure capable of rotating relatively, and the stirring structure can be any one of the existing devices, such as: impellers, mixing columns, and the like. Accordingly, the inner tub 1 and/or the agitation structure is driven to rotate by the driving motor, so that various water flows are formed in the inner tub, and the laundry in the inner tub is treated by the water flows. Meanwhile, in order to ensure the stability of the inner barrel during rotation, a balance ring is arranged on the inner barrel 1, and the balance ring is preferably arranged at the barrel opening 101 of the inner barrel.

Meanwhile, the inner barrel forms the water container when the washing machine is used for washing, so that clothes only contact with washing water in the water container in the washing process, the situations that the washing water between the inner barrel and the outer barrel flows in the inner barrel to pollute the clothes are avoided, the washing cleanliness of the washing machine is greatly improved, and the situation that the clothes are not thoroughly cleaned by the washing machine due to the pollution of the washing water between the inner barrel and the outer barrel is avoided.

In the embodiment of the invention, in order to discharge water flow after clothes in the inner barrel 1 of the washing machine are separated and realize normal washing of the inner barrel 1 sealed with water in the working process of the washing machine, the following settings are carried out:

the washing machine in the embodiment of the invention can be any washing machine which is provided with an inner barrel 1 to form a rotatable water container in the prior art, the bottom of the inner barrel 1 is provided with a water outlet 7, and the inner barrel 1 is provided with a centrifugal valve structure for controlling the opening and closing of the water outlet. In the normal washing and rinsing process of the inner barrel 1, the rotating speed of the inner barrel 1 is lower than a set value, the water outlet is not opened by the centrifugal valve structure, so that the inner barrel 1 directly forms a water containing barrel for containing washing and rinsing water, and the washing and rinsing water contained in the inner barrel 1 is used for washing or rinsing clothes; in the process of dewatering and dewatering the inner barrel 1, the rotating speed of the inner barrel 1 is higher than a set value, the centrifugal valve structure is driven by centrifugal force to open the water outlet 7, water contained in the inner barrel 1 is smoothly discharged out of the inner barrel 1, and therefore the purpose of normally carrying out dewatering and dewatering procedures on the non-porous inner barrel washing machine is achieved. The washing machine in the embodiment of the present invention is not limited to the structure shown in the drawings, for example: the existing common washing machine can also be adopted, and the inner tub 1 of the washing machine is only required to be arranged into the washing machine which has no dewatering holes at least at the middle lower part and forms a water container when the washing machine washes.

Meanwhile, in order to ensure the sealing performance in the inner barrel 1, an inner barrel cover capable of opening and closing the inner barrel opening may be provided on the inner barrel 1 to correspondingly open and close the inner barrel opening 101.

In the embodiment of the invention, the washing machine can be arranged as follows: the inner barrel 1 is rotatably sleeved in the outer barrel, the outer barrel forms an inner barrel supporting piece 3, and each water outlet 7 is communicated with the inner barrel 1 and the outer barrel outside the inner barrel 1, so that the washing water flowing out of the water outlets 7 of the inner barrel 1 can be collected into the outer barrel and then is discharged outside through a water discharge pipe communicated with the bottom of the outer barrel. Preferably, in order to prevent the washing water from splashing, a tub cover (not shown) for opening and closing a tub opening of the tub may be provided on the tub.

Alternatively, as shown in fig. 1 and 2, the washing machine may further be configured as follows: a water collecting tank 31 is arranged below the inner barrel 1, the water collecting tank 31 forms an inner barrel support piece 3, the radial size of an opening of the water collecting tank 31 is larger than that of the inner barrel 1, and the top end of the water collecting tank 31 is not larger than the highest water level height of the inner barrel 1; at least the lower end of the inner barrel 1 extends into the water collecting tank 31, and a gap is reserved between the outer wall of the inner barrel 1 and the inner wall of the water collecting tank 31, so that the inner barrel 1 is ensured to rotate, and the drained water can completely flow into the water collecting tank 31. Therefore, the washing water flowing out from the water outlet 7 of the inner tub 1 can be collected in the water collecting tank 31 and then discharged outside through the water discharge pipe communicated with the bottom of the water collecting tank 31.

As shown in fig. 1 to 2, a washing machine according to an embodiment of the present invention includes an inner tub 1; a water collecting tank 31 for collecting the drained water flowing out from the inner barrel is arranged below the inner barrel 1; the inner barrel 1 is provided with a water outlet 7, and a centrifugal valve structure is arranged at the water outlet 7 of the inner barrel so as to drive a valve plug 51 of the centrifugal valve to move up and down by utilizing the rotating centrifugal force of the inner barrel to open or close the water outlet 7. In an embodiment of the present invention, the centrifugal valve structure includes: the inner barrel 1 is provided with a swing rod 4 which is relatively swung under the action of the rotating centrifugal force of the inner barrel 1, the swing rod 4 is sleeved with a drainage valve plug 5 which can relatively slide, and the drainage valve plug 5 is limited by a drainage outlet 7 and is driven by the swing rod 4 to move up and down to open and close the drainage outlet 7. Through the arrangement, the swinging rod is driven to swing up and down by utilizing the centrifugal force generated by the high-speed rotation of the inner barrel, the swinging rod drives the sleeved drainage valve plug to move up and down so as to realize the effect of correspondingly opening and closing the drainage outlet, and further the remarkable technical progress of controlling the controllable opening and closing of the drainage outlet of the non-porous inner barrel by utilizing the centrifugal force is realized.

In the embodiment of the invention, the water outlet 7 is positioned on the inner barrel bottom 103, and the swing rod 4 can be vertically and rotatably arranged below the inner barrel bottom 103; the water discharge valve plug 5 is sleeved on the swing rod 4 and is driven by the swing rod 4 to move up and down to correspondingly open and close the water outlet 7.

In the embodiment of the invention, one end of a swing rod 4 is hinged with the bottom 103 of the inner barrel, and the axis of a hinged shaft is arranged along the horizontal direction; the other end of the swing rod 4 is freely arranged; the swing rod 4 is gradually inclined downwards from the hinged end to the free end. When interior bucket 1 does not rotate, cup joint 5 shutoff outlet 7 of drainage valve plug on pendulum rod 4, the periphery that drainage valve plug 5 was in the bucket bottom 103 top part is contradicted with interior bucket bottom 103 limit mutually, drainage valve plug 5 draws and draws pendulum rod 4, pendulum rod 4 keeps motionless, at this moment, pendulum rod 4 is in the setting of free end to hinged end orientation downward sloping gradually, receive centrifugal force drive outwards to remove when making interior bucket 1 high-speed rotation pendulum rod, and make the pendulum rod 4 of downward sloping upwards produce swing displacement, and then reach and promote drainage valve plug 5 and reciprocate, the purpose of switching outlet.

As shown in fig. 1 and 2, in the embodiment of the present invention, the drain valve plug 5 includes a valve plug 51, and the valve plug 51 is disposed inside the inner tub 1 above the drain opening 7 to correspondingly close or open the drain opening 7; the lower end of the valve plug 51 is connected with a connecting rod 52, the connecting rod 52 is vertically arranged, the lower end of the connecting rod 52 penetrates through the water outlet 7, and the lower end of the connecting rod 52 is sleeved with the swing rod 4.

Preferably, the lower end of the connecting rod 52 is connected with a plug sleeve capable of rotating relatively, and the connecting rod 52 is connected with the plug sleeve in a plug manner. The inserting sleeve capable of rotating relatively is arranged at the lower end of the connecting rod, so that the inserting position of the drainage valve plug and the swing rod can rotate relatively, and the conditions of rigid torque and transmission failure at the inserting position of the drainage valve plug and the swing rod in the swing process of the swing rod are avoided (not noted in the attached drawings).

In the embodiment of the invention, the swing rod 4 extends along the radial direction of the inner barrel 1, and the swing rod 4 gradually inclines downwards towards the outer peripheral side of the inner barrel 1; one end of the swing rod 4 close to the axle center of the inner barrel 1 is rotatably connected with the inner barrel bottom 103, and one end of the swing rod 4 close to the periphery of the inner barrel bottom 103 is freely arranged; the drain port 7 is provided at the outer periphery of the inner tub bottom 103. Through setting up the outlet in the outer periphery department at the bottom of interior bucket to increase the centrifugal force that the pendulum rod receives, promote the amplitude of oscillation, and then realize the promotion to the control effect of drainage valve plug.

As shown in fig. 1 and 2, in the embodiment of the present invention, a free end of the swing rod 4 is provided with a balancing weight 6 for increasing the centrifugal force applied to the inner tub 1 during rotation; preferably, the radial dimension of the balancing weight 6 is larger than the radial dimension of the joint of the drainage valve plug 51 and the swing rod 4, the drainage valve plug 51 is provided with an insertion hole for the swing rod 4 to be inserted, and the radial dimension of the balancing weight 6 is larger than the diameter of the insertion hole. Thereby, make the balancing weight restrict the drainage valve plug to reach the effect that provides spacing, prevent that it breaks away from mutually with the pendulum rod to the drainage valve plug. Preferably, in order to avoid the bending torsion generated at the splicing part of the oscillating rod 4 and the drainage valve plug 5 in the oscillating process of the oscillating rod, the aperture of the splicing hole arranged on the drainage valve plug 5 needs to be larger than the diameter of the oscillating rod 4 so as to flow out the clearance allowance and facilitate the transmission of the oscillating rod and the drainage valve plug.

Certainly, in the embodiment of the present invention, when the self weight of the swing rod 4 is large, and the swing rod 4 can be driven by the centrifugal force applied to itself to swing up and down, the counterweight block 6 is not required to be additionally installed, and the driving control of the drainage valve plug 5 can still be realized; in particular, the free end of the oscillating rod 4 can be set as a heavier part, and the hinged end can be set as a lighter part, so that the effect of centrifugally driving the oscillating rod (not shown in the figures) can be better achieved.

As shown in fig. 1 and 2, in the embodiment of the present invention, the bottom 103 of the inner tub is provided with a self-locking device 8 for locking and unlocking the drain valve plug 5. The self-locking device 8 comprises a bolt 81 which is arranged at the bottom 103 of the inner barrel and can stretch and retract along the direction of the connecting rod 52 of the drain valve plug 5, the bolt 81 is connected with a driving device, and the driving device directly or indirectly drives the bolt 81 to generate stretching displacement; the connecting rod 52 is provided with a locking protrusion 85 which horizontally protrudes towards the locking tongue 81 along the telescopic direction of the locking tongue 81, so that the locking tongue 81 is inserted between the upper side of the locking protrusion 85 and the lower side of the inner barrel bottom 103 after extending out, and the drainage valve plug 5 can not move upwards under the limitation of the locking tongue 81 to form a locking effect.

As shown in fig. 1 and 2, the control device of the self-locking device comprises a counterweight 82 and a return spring 83, a downward convex bracket 84 is arranged at the lower side of the bottom 103 of the inner barrel, a bolt 81 is arranged on the bracket 84 along the radial extension of the inner barrel, and the counterweight 82 is arranged at one end of the bolt 81 close to the periphery of the inner barrel 1; the outer circumference of the bolt 81 is sleeved with a return spring 83, and the return spring 83 is clamped between one end of the bolt 81 close to the axis of the inner barrel 1 and a bracket 84 on the inner barrel. Therefore, after the bolt 81 rotates together with the inner barrel until the rotating speed reaches a set value, the bolt 81 is driven by centrifugal force to move towards the peripheral direction of the inner barrel 1 so as to unlock the drainage valve plug 5; after the rotating speed of the inner barrel 1 is lower than the set value, the bolt 81 is reset to the initial position under the action of the reset spring 83, and the bolt 81 and the drainage valve plug 5 are locked mutually.

As shown in fig. 1 and 2, in the embodiment of the present invention, a plurality of water discharge ports 7 are arranged on the inner barrel bottom 103 of the inner barrel 1, water discharge valve plugs 5 are respectively installed at the water discharge ports 7 in a one-to-one correspondence manner, the water discharge valve plugs 5 are respectively controlled by one-to-one correspondence centrifugal valve structures, the water discharge valve plugs 5 are respectively connected with the inner barrel 1 through one-to-one correspondence swing rods 4 of the centrifugal valve structures, the centrifugal valve structures synchronously drive the water discharge valve plugs 5 to move up and down, so that the water discharge ports 7 are synchronously opened or closed; preferably, the water outlets 7 are symmetrically arranged relative to the axis of the inner barrel 1, and the centrifugal valve structures at the water outlets 7 are also symmetrically arranged relative to the axis of the inner barrel 1.

The embodiment of the invention also discloses a control method of the washing machine, when the washing machine executes water inlet or washing and rinsing programs, the inner barrel rotates at a rotating speed lower than a set value, and the swing rod pulls the drain valve plug downwards under the action of self gravity to block the drain outlet; when the washing machine executes a drainage or dehydration procedure, the inner barrel rotates at a rotating speed higher than a set value, the swing rod and the inner barrel rotate together, and the swing rod swings upwards under the action of rotating centrifugal force to push the drainage valve plug to move upwards and open the drainage outlet.

In the embodiment of the invention, when the washing machine executes water inlet or washing and rinsing procedures, the swing rod descends to the lowest position under the self weight, and the drainage valve plug blocks the drainage outlet, as shown in the state of figure 1, the self-locking device arranged on the inner barrel locks the drainage valve plug, and the drainage valve plug and the inner barrel are relatively fixed.

When the washing machine executes a drainage or dehydration procedure, after the self-locking device arranged on the inner barrel unlocks the drainage valve plug and the drainage valve plug is in a free unlocking state, as shown in a state shown in figure 2, the inner barrel rotates at a rotating speed which is greater than a set value, the swing rod is driven by centrifugal force to move upwards, and the drainage valve plug is pushed to move upwards to open the drainage outlet.

In the embodiment of the invention, when the washing machine is started and water is fed:

when the inner barrel does not rotate, the drain valve plug is pulled downwards under the action of the gravity of the swing rod to move to be close to the bottom of the inner barrel and close the water outlet, the connecting rod of the drain valve plug is locked by the spring bolt extending out of the self-locking device, and the drain valve plug is prevented from being loosened due to the influence of vibration of the inner barrel and the like. The washing machine is in a state as shown in figure 1, because the drain valve plug blocks the drain port downwards from the upper side of the inner barrel, the water pressure of the water stored in the full barrel can be withstood after the water enters the inner barrel, and the water leakage of the inner barrel caused by the overlarge pressure at the drain port of the inner barrel due to the change of the water level in the inner barrel, particularly the overhigh water level can be avoided;

in the embodiment of the invention, when the washing machine drains water:

when the washing machine carries out washing or rinsing, spin-drying and other procedures, dewatering and draining, the inner barrel rotates until the rotating speed reaches a set value, the oscillating bar and the balancing weight at the bottom of the inner barrel synchronously rotate with the inner barrel, the oscillating bar and the balancing weight move towards the direction far away from the center of the inner barrel under the action of centrifugal force generated by the rotation of the inner barrel, when the component force of the centrifugal force decomposed in the vertical direction is greater than the self gravity, the oscillating bar which is downwards inclined along the radial direction of the inner barrel is driven to upwards swing, the connecting rod which is sleeved with the oscillating bar and is spliced with the water outlet slides relative to the oscillating bar and moves upwards at the same time, and the connecting rod pushes the valve plug to upwards move;

the counterweight block of the self-locking device and the inner barrel rotate together and move outwards under the pulling of centrifugal force, the lock tongue moves towards the periphery of the inner barrel under the pulling of the counterweight block, the self-locking of the drainage valve plug is released, and the drainage valve plug can move freely in the vertical direction;

the rotating speed of the inner barrel is continuously increased, the balancing weight and the oscillating bar drive the drainage valve plug to generate vertical upward displacement, the drainage valve plug is upwards lifted along with the rotating speed of the inner barrel, the valve plug is pushed open, the inner barrel of the washing machine starts to drain water, and the washing machine is in a state shown in figure 2;

when the water level is emptied to the water level of the empty barrel, the computer board controls the inner barrel to raise the rotating speed to enter a dehydration stage, and dehydration is completed according to the program requirement.

In the embodiment of the invention, the measures of the washing machine when the abnormal condition occurs in the operation process are as follows:

when the condition that the drainage pipe of the washing machine is hung or blocked occurs in the drainage process of the washing machine, when the washing machine detects that the water level in the water collecting tank exceeds a warning value, the inner barrel is switched to a braking state from a rotating state, after the rotating speed of the inner barrel is rapidly reduced, the centrifugal force of the swing rod is rapidly reduced, so that the drainage valve plug blocks the drainage port at the bottom of the inner barrel again under the action of gravity, the drainage is stopped, and the overflow condition of the water collecting tank is prevented.

When the water is not sealed in place between the water outlet and the valve plug and the water is leaked from the water outlet, the inner barrel of the washing machine can be filled with water continuously, and when the washing machine detects that the continuous water inlet time exceeds the set time, the washing machine sends out an alarm prompt and stops filling water.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.