CN106906619B

CN106906619B - Drainage control mechanism and washing machine

Info

Publication number: CN106906619B
Application number: CN201510974341.3A
Authority: CN
Inventors: 纪虎; 刘尊安; 宋秀顺; 周瑞元; 徐凯
Original assignee: Qingdao Haier Washing Machine Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2015-12-22
Filing date: 2015-12-22
Publication date: 2020-03-20
Anticipated expiration: 2035-12-22
Also published as: JP2019505739A; JP6773789B2; CN106906619A; WO2017107925A1

Abstract

The present invention relates to a drainage control mechanism, comprising: the valve plug of ability shutoff outlet, the piston rod of drive valve plug motion, the tip of valve plug just sets up water level detection device to the position in outlet, water level detection device is including the electrical coil of fixed setting, along with the water level height change and the iron core that removes and the signal detection structure of electrical coil, perhaps water level detection device is including the iron core of fixed setting, along with the water level height change and the signal detection structure of the electrical coil that removes and electrical coil, the iron core is located the induction range of coil. This kind of water level detection device simple structure, the fault rate is low, and is in the same place with drainage control mechanism integration, the cost is reduced, and drainage control mechanism direct detection interior bucket water level height, and the accuracy is high, does not have pipeline, air chamber isotructure of measuring usefulness, has really realized the interior bucket of sclausura inner bucket technique and has kept apart, avoids the cross infection that the bacterium that outer bucket multiplied caused.

Description

Drainage control mechanism and washing machine

Technical Field

The invention relates to the field of washing machines, in particular to a drainage control mechanism and a washing machine.

Background

In the existing impeller type washing machine, the inner barrel is communicated with the inner barrel and the outer barrel through water permeable holes, the inner barrel is a washing barrel, the outer barrel is a water containing barrel, the water filled between the inner barrel and the side wall of the outer barrel does not participate in washing, the water really participating in washing is only the part in the inner barrel, so that the waste of water resources is large, and in addition, the concentration of a washing agent/washing powder in washing liquid can be reduced due to excessive water between the inner barrel and the outer barrel. Meanwhile, as water flow frequently enters and exits between the inner barrel and the outer barrel, after the continuous use, the area between the side walls of the inner barrel and the outer barrel also forms a space for storing dirt and dirt, and water scale in tap water, free substances of washing powder, cellulose of clothes, organic matters of human bodies, dust and bacteria brought by the clothes are easily remained between the side walls of the inner barrel and the outer barrel. The mold is a problem that a large amount of dirt accumulated in the long-term used washing machine is bred and propagated because the dirt can not be effectively removed, and if the dirt which can not be seen by a user is not cleaned, bacteria can be attached to clothes after next washing to bring to a human body, so that cross infection is caused.

200420107890.8 patent relates to a full-automatic washing machine, which mainly comprises a box body, a washing and dehydrating barrel, a water containing barrel and a driving device, wherein the water containing barrel is arranged outside the washing and dehydrating barrel and is fixedly connected with the box body, a sealing device is arranged between the bottom surface of the inner wall of the water containing barrel and the bottom surface of the outer wall of the washing and dehydrating barrel, and a sealing cavity is formed in the sealing device; the outer side wall of the washing dehydration barrel is not provided with a through hole, and the bottom of the washing dehydration barrel is provided with a water outlet communicated with the sealed cavity; the water holding barrel is provided with a water outlet communicated with a water drainage pipe, and the water drainage pipe is provided with a water drainage valve.

In the existing research, there is also a washing machine without water between an inner barrel and an outer barrel during washing, a plurality of water throwing holes are arranged on the upper part of the inner barrel near the edge, at least one inner barrel water outlet is arranged at the bottom of the inner barrel, a water drainage control mechanism capable of plugging the water drainage holes is arranged at the bottom of the outer barrel, the water drainage control mechanism at least comprises a telescopic valve plug, the valve plug moves upwards to close the water drainage holes, and the valve plug moves downwards to open the water drainage holes.

In the washing machine without water between the inner barrel and the outer barrel, the water containing barrel is the inner barrel, the inner barrel is required to rotate during dehydration, the existing water level detection structure formed by the combination of a series of structures and components such as a water path, an air chamber, a pressure guide pipe, a pipe clamp, a water level sensor and the like is not used for leading out the detection water level from the outer barrel, if the detection water level needs to lead out a corresponding detection pipeline from the inner barrel, the real isolation of the inner barrel and the outer barrel cannot be realized, the existing water level detection structure is complex, the assembly process is complex, air leakage between the detection pipeline and the air chamber and between the detection pipeline and the sensor is easy to occur, the detection accuracy is influenced, the whole machine fault is caused, and the complex structure causes higher.

The invention is therefore set forth in this light.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a drainage control mechanism and a washing machine, which can realize the detection of water level while controlling drainage.

In order to realize the purpose, the invention adopts the following technical scheme: a drainage control mechanism comprising: the valve plug that can the shutoff outlet, the piston rod of drive valve plug motion, the tip of valve plug just sets up water level detection device to the position in outlet.

The water level detection device is including the fixed circular telegram coil that sets up, along with the water level height change and the signal detection structure of the iron core that removes and circular telegram coil, perhaps water level detection device is including the fixed iron core that sets up, along with the water level height change and the signal detection structure of the circular telegram coil that removes and circular telegram coil, the iron core is located the induction range of coil.

The water level detection device comprises a fixed electrified coil, an iron core moving along with the change of the water level and a signal detection structure of the electrified coil, wherein the iron core is fixed on a movable sheet, one side of the movable sheet is just opposite to the water outlet, the other side of the movable sheet is connected with an elastic piece, and the other end of the elastic piece is fixedly arranged.

The valve plug is equipped with one and holds the chamber, holds the chamber and is equipped with the opening towards one side of outlet, and the opening part sets up elastic diaphragm, the water level detection structure sets up hold the intracavity, elastic diaphragm covers the valve plug towards the part or whole of the one end in outlet, prefers elastic diaphragm covers the tip of valve plug.

The stiff end of elastic component is fixed the bottom that the chamber was held to the valve plug, perhaps the bottom that the chamber was held to the valve plug was stretched out to the stiff end of elastic component is fixed the top of piston rod, the movable plate is located hold the top in chamber, the movable plate just laminates or is fixed with elastic diaphragm to one side in outlet.

And an adjusting screw is arranged at the position where the elastic part is fixed at the bottom of the accommodating cavity or the top of the piston rod.

The piston rod is hollow structure, the inside of piston rod sets up the power supply line of circular telegram coil and/or the signal connection line of circular telegram coil.

The valve plug top is equipped with at least round sealing, and during drainage control mechanism shutoff outlet, the sealing at valve plug top closely laminates at the bottom of the sealing and the outer bucket of outlet periphery, prefers the sealing be elastic construction perhaps elasticity diaphragm covers the sealing at valve plug top at least.

The outlet is big-end-up's horn mouth structure, and during drainage control mechanism shutoff outlet, the valve plug stretches into the outlet, and the top of valve plug and the crossing department of lateral part and the inner wall in outlet closely laminate, the top of preferred valve plug and the crossing department of lateral part be elastic construction perhaps resilient diaphragm covers the valve plug top and all just buckles to the lateral part that covers partial valve plug downwards.

A washing machine with the drainage control mechanism.

After the technical scheme of the invention is adopted, the following beneficial effects are brought: after the water discharge opening is opened by the water discharge control mechanism, the water level detection device retracts to the bottom of the outer barrel along with the valve plug, and the inner barrel cannot be influenced when rotating. This kind of water level detection device simple structure, the fault rate is low, and is in the same place with drainage control mechanism integration, the cost is reduced, and drainage control mechanism direct detection interior bucket water level height, and the accuracy is high, does not have pipeline, air chamber isotructure of measuring usefulness, has really realized the interior bucket of sclausura inner bucket technique and has kept apart, avoids the cross infection that the bacterium that outer bucket multiplied caused.

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

Drawings

FIG. 1: structure of washing machine of the invention

FIG. 2: the invention relates to a structure diagram of a drainage control mechanism

FIG. 3: valve plug structure diagram of the invention

Wherein: 100. the water discharge device comprises an inner barrel, 101, a water discharge opening, 102, a water discharge hole, 103, an inner barrel bottom, 200, an outer barrel, 300, a water discharge control mechanism, 301, a valve plug, 302, a piston rod, 303, a corrugated pipe, 305, an iron core, 306, an electrified coil, 307, a movable sheet, 308, an elastic piece, 309, an elastic diaphragm, 310, an accommodating cavity, 311, an adjusting screw, 312, a power supply wire, 313, a first spring, 314, a second spring, 315, a valve seat, 316 and a driving motor.

Detailed Description

As shown in FIG. 1, the washing machine of the present invention comprises an inner tub 100 and an outer tub 200, the inner tub has no water leakage hole communicating with the outer tub, the bottom 103 of the inner tub has a water drainage hole 101, the upper part of the inner tub has a circle of water drainage holes 102, the water drainage control mechanism controls the water drainage hole 101 to be closed during washing, the water level is lower than the height of the water drainage hole 102, only water exists in the inner tub 100, no water exists between the inner tub 100 and the outer tub 200, after washing, the water drainage control mechanism controls the water drainage hole 101 to be opened, most of water is drained from the water drainage hole 101, during dewatering, the inner tub 100 rotates, water extracted from clothes rises along the tub wall under the action of centrifugal force, the water is drained from the inner tub to the outer tub through the water drainage hole 106 at the upper part of the inner tub, and then drained through the water drainage hole of the outer tub 200, thus washing water is only stored in the, the inner barrel and the outer barrel are cleaned, so that bacteria are prevented from breeding; in the process of draining and/or dewatering, the water outlet 101 is opened, most of water, sediment such as silt, particles and the like are discharged into the outer barrel from the water outlet 101 at the lower part, water in clothes is discharged into the outer barrel from the water outlet 102 at the upper part of the inner barrel during high-speed rotation dewatering of the inner barrel, and is directly discharged out of the washing machine from the water outlet and the water discharge pipe at the bottom of the outer barrel, so that quick water drainage is realized, and the effects of water drainage and sewage discharge are good.

The invention sets a drainage control mechanism 300 for controlling the opening/closing of the drainage port 101 at the bottom of the drainage port 101, the drainage control mechanism 300 is installed on the outer barrel, the drainage port 101 is on the inner barrel, when the drainage port 101 needs to be sealed, the inner barrel is controlled to rotate to the position where the drainage port 101 faces the drainage control mechanism 300, the drainage control mechanism 300 is controlled to act to seal the drainage port 101, when the drainage port 101 needs to be opened, the drainage control mechanism 300 is controlled to act to open the drainage port 101, the inner barrel can rotate, in the washing process, the drainage control mechanism 300 seals the drainage port 101 during water inlet and washing, the drainage port 101 is controlled to be closed, and the drainage control mechanism 300 controls the drainage port 101.

The water level detection structure of the existing washing machine comprises a water channel, an air chamber, a pressure guide pipe, a pipe clamp and a water level sensor, wherein water flow is guided to the air chamber through the water channel, the water level is detected through the pressure change of the air chamber, the water containing barrel of the existing washing machine is an outer barrel which is fixed, and the water flow is easily led out from the outer barrel to the air chamber.

In contrast, the present application provides a drainage control mechanism 300, which is capable of controlling the opening/closing of the drainage port 101 and detecting the water level in the inner tub after closing the drainage port 101, as shown in fig. 2 and 3, and which is capable of certainly blocking the drainage port 101 when water is present in the inner tub such as washing and rinsing, and the valve plug is capable of contacting with the water in the inner tub, the drainage control mechanism comprising: a valve plug 301 capable of plugging the water outlet and a piston rod 302 for driving the valve plug 301 to move, wherein the end part of the valve plug 301 is opposite to the position of the water outlet 101 and is provided with a water level detection device. After the valve plug 301 seals the water outlet 101, the position of the valve plug 301 facing the water outlet 101 contacts with the water in the inner barrel 100, the water level in the inner barrel can be detected after the water level detection device is arranged at the position, and after the water outlet is opened by the drainage control mechanism 300, the water level detection device retracts to the bottom of the outer barrel along with the valve plug 301, so that the inner barrel 100 cannot be influenced when rotating.

The water level detection device comprises an electrified coil 306, an iron core 305 and a signal detection structure, wherein the signal detection structure is connected with the electrified coil 306 to detect the change of an electric signal in the electrified coil 306, and the electric signal is a current signal or a voltage signal. Preferably, the signal detection structure is a detection circuit, the detection circuit only needs to detect a current signal or a voltage signal of the electrified coil, the electrified coil 306 transmits the current signal or the voltage signal to the detection circuit through the information signal connecting line, and the detection circuit transmits the detected electric signal to a controller of the washing machine.

The water level detection device comprises a fixed electrified coil 306 and an iron core 305 moving along with the change of the water level, the change of the water level affects the movement of the iron core 305, the iron core 305 affects the change of the current in the electrified coil 306 at different positions, and the current in the electrified coil 306 is detected to obtain the height of the water level in the inner barrel. Different water levels correspond to different current values, so that the accurate detection of the water level is realized.

Or the water level detection device comprises a fixed iron core 305 and an electrified coil 306 which moves along with the change of the water level, the change of the water level affects the movement of the electrified coil 306, the distance between the electrified coil 306 and the iron core 305 at different positions is different, the iron core 305 affects the electrified coil 306 differently, and the height of the water level in the inner barrel can be obtained by detecting the current in the electrified coil 306. Different water levels correspond to different current values, so that the accurate detection of the water level is realized.

In both cases, the iron core 305 is located in the induction range of the energized coil 306, which ensures that the change in the distance between the iron core and the energized coil will affect the magnitude of the current in the coil.

This kind of water level detection device simple structure, the fault rate is low, and is in the same place with drainage control mechanism integration, the cost is reduced, and drainage control mechanism direct detection interior bucket water level height, and the accuracy is high, does not have pipeline, air chamber isotructure of measuring usefulness, has really realized the interior bucket of sclausura inner bucket technique and has kept apart, avoids the cross infection that the bacterium that outer bucket multiplied caused.

The preferred water level detecting device comprises a fixed electrified coil 306 and an iron core 305 moving along with the change of the water level, because the electrified coil 306 needs to be electrified and needs to detect the electric signal, the electrified coil 306 is set to be fixed and is easier to install, the iron core 305 is fixed on a movable sheet 307, one side of the movable sheet 307 is opposite to the water outlet 101, the other side of the movable sheet 307 is connected with an elastic piece 308, and the other end of the elastic piece 308 is fixedly arranged. The water in the inner barrel can directly or indirectly act on the movable sheet 307, the movable sheet 307 moves to drive the position of the iron core 305 to move, the current in the electrified coil 306 is influenced, the current in the electrified coil 306 is detected, and different current values correspond to different water levels, so that the accurate detection of the water level is realized.

Preferably, a concave portion is arranged at the upper end of the iron core 305, a convex portion is arranged at the lower portion of the movable plate 307, the convex portion of the movable plate extends into the concave portion of the iron core, the shape and the size of the convex portion of the movable plate are matched with those of the concave portion of the iron core, another concave portion is arranged at the lower end of the iron core, the end portion of the elastic member extends into the concave portion at the lower end of the iron core to realize connection, a positioning column is arranged in the concave portion at the lower end of the iron core, a positioning hole is formed in the end portion of the elastic member, and the positioning column. Preferably, the elastic part is a spring, the end part of the spring extends into the concave part at the lower end of the iron core, and the positioning column in the concave part at the lower end of the iron core extends into the spring to realize positioning. The connection mode is simple to install and stable in connection.

Valve plug 301 is equipped with one and holds chamber 310, holds chamber 310 and is equipped with the opening towards one side of outlet 101, and the opening part sets up elastic diaphragm 309, the water level detection structure sets up hold in the chamber 310, elastic diaphragm 309 covers the part or whole of valve plug 301 towards the one end of outlet, preferably elastic diaphragm 309 covers the tip of valve plug 301. The water level detection structure is arranged in the accommodating cavity 310 inside the valve plug 301, the control of the valve plug on the water outlet is not influenced, and the detection of the water level of the inner barrel by the water level detection device can be realized.

The stiff end of elastic component 308 is fixed the bottom that holds the chamber 310 of valve plug 301, perhaps the stiff end of elastic component 308 stretches out the bottom that holds the chamber 310 of valve plug 301 and fixes the top of piston rod 302, movable plate 307 is located hold the top of chamber 310, movable plate 307 just laminates or is fixed with elasticity diaphragm 309 to one side of outlet. The water level in the inner barrel rises and can compress the elastic diaphragm 309, the movable piece 307 and the elastic piece 308 downwards, the iron core 305 is driven to move downwards, the current in the electrified coil is influenced, and the detected electric signal in the electrified coil is used for obtaining the water level in the inner barrel.

An adjusting screw 311 is arranged at the bottom of the accommodating cavity 310 or the top of the piston rod 302 where the elastic member is fixed. The adjusting screw can finely adjust the position of the elastic piece, and the water level can be detected more accurately.

The piston rod 302 is a hollow structure, and a power supply wire of the electrified coil and/or a signal connection wire of the power supply coil are/is arranged inside the piston rod 302.

The top of the valve plug 301 is provided with at least one circle of sealing part, when the drainage control mechanism plugs the drainage outlet, the sealing part at the top of the valve plug is tightly attached to the bottom of the outer barrel at the periphery of the drainage outlet, preferably, the sealing part is of an elastic structure or the elastic diaphragm 309 at least covers the sealing part at the top of the valve plug. The structure of the water outlet with the structure is not limited by excessive structures, and the water outlet with the structure is simple to process. The elastic diaphragm 309 functions both to seal the water level detecting means and to seal the valve plug and the drain opening.

In another embodiment of the present invention, the drain opening 101 is a bell-mouth structure with a large top and a small bottom, when the drain opening is sealed by the drain control mechanism, the valve plug 301 extends into the drain opening, the intersection of the top and the side of the valve plug is tightly attached to the inner wall of the drain opening, preferably, the intersection of the top and the side of the valve plug 301 is an elastic structure or the elastic membrane 309 covers the whole top of the valve plug and bends downward to cover part of the side of the valve plug. The elastic diaphragm 309 functions both to seal the water level detecting means and to seal the valve plug and the drain opening.

The piston rod 302 is connected to a drive motor 316, and the drive motor 316 drives the piston rod 302 to reciprocate. Or the piston rod 302 is of a hollow structure, one end of the piston rod 302 facing the valve plug 301 is a closed end, a first spring 313 is arranged inside the piston rod 302, one end of the first spring 313 is connected with the closed end, the other end of the first spring 313 is connected with a driving motor 313, the driving motor 313 drives the first spring 313, the first spring 313 drives the piston rod 302 to reciprocate, and the situation that the driving motor 316 is directly connected with the rigid piston rod 302 to impact the driving motor 316 is avoided.

The drain control mechanism 300 is arranged at the bottom of the outer barrel of the washing machine, the valve plug 301 is connected with a corrugated pipe 303, one end of the corrugated pipe 303 is connected with the valve plug 301, the other end of the corrugated pipe 303 is connected with the bottom of the outer barrel, preferably, the valve plug 301 and the corrugated pipe 303 are integrally formed, the corrugated pipe 303 has certain flexibility, and the piston rod 302 can be always kept sealed in the outer barrel when having a certain reciprocating motion range.

The piston rod 302 is equipped with the second spring 314 outward, and the one end and the valve plug 301 of second spring 314 offset, and the other end is fixed, the second spring 314 can provide certain impetus when valve plug 301 upward movement, drainage control mechanism 300 still includes valve seat 315, valve seat 315 is the mount pad of drainage control structure 300, installs the outside in outer bucket 200 bottom, and valve seat 315 middle part is equipped with the slide of piston rod 302, the piston rod 302 is equipped with the second spring 314 outward, and the one end and the valve plug 301 of second spring 314 offset, and the other end offsets with valve seat 312, and when valve plug 301 downstream, second spring 314 is compressed, and second spring 314 resumes during valve plug 301 upward movement, and second spring 314 can provide certain impetus during valve plug 301 upward movement.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the principle of the present invention, which should also be regarded as the protection scope of the present invention.

Claims

1. A drainage control mechanism comprising: piston rod of valve plug, the motion of drive valve plug of ability shutoff outlet, its characterized in that: a water level detection device is arranged at the position, opposite to the water outlet, of the end part of the valve plug;

the water level detection device is arranged in the accommodating cavity, and the elastic diaphragm covers part or all of one end of the valve plug, which faces the water outlet;

the water level detection device comprises a fixedly arranged electrified coil, an iron core moving along with the change of the water level and a signal detection structure of the electrified coil, wherein the iron core is fixed on a movable sheet, one side of the movable sheet is opposite to the water outlet, the other side of the movable sheet is connected with an elastic piece, and the other end of the elastic piece is fixedly arranged;

the fixed end of the elastic piece is fixed at the bottom of the valve plug accommodating cavity, or the fixed end of the elastic piece extends out of the bottom of the valve plug accommodating cavity and is fixed at the top of the piston rod, the movable piece is positioned at the top of the accommodating cavity, and one side of the movable piece, which is opposite to the water outlet, is attached to or fixed with the elastic diaphragm;

the piston rod is hollow structure, and the one end towards the valve plug is the blind end, and the inside first spring that sets up of piston rod, first spring one end is connected with the blind end, and the other end is connected with driving motor.

2. A drainage control mechanism as set forth in claim 1, wherein: the elastomeric diaphragm covers the end of the valve plug.

3. A drain control mechanism as claimed in claim 2, wherein: and an adjusting screw is arranged at the position where the elastic part is fixed at the bottom of the accommodating cavity or the top of the piston rod.

4. A drainage control mechanism as claimed in any one of claims 1 to 3, wherein: the piston rod is hollow structure, the inside of piston rod sets up the power supply line of circular telegram coil and/or the signal connection line of circular telegram coil.

5. A drainage control mechanism as claimed in any one of claims 1 to 3, wherein: the valve plug top is equipped with at least round sealing, and when drainage control mechanism shutoff outlet, the sealing at valve plug top closely laminates with the outer barrel end in outlet periphery.

6. A drain control mechanism as claimed in claim 5, wherein: the sealing part is an elastic structure or the elastic diaphragm at least covers the sealing part at the top of the valve plug.

7. A drainage control mechanism as claimed in any of claims 1 to 4, wherein: the outlet is big-end-up's horn mouth structure, and when drainage control mechanism shutoff outlet, the valve plug stretches into the outlet, and the top of valve plug closely laminates with the inner wall in lateral part crossing department and outlet.

8. A drainage control mechanism as set forth in claim 7 wherein: the top of the valve plug is in an elastic structure with the intersection of the side part or the elastic diaphragm covers the top of the valve plug and is bent downwards to cover the side part of the valve plug.

9. A washing machine having the drain control mechanism of any one of claims 1 to 8.