CN106906619A - A kind of drainage control mechanism and washing machine - Google Patents

Abstract

The invention relates to a drainage control mechanism, comprising: a valve plug capable of blocking a drain outlet, and a piston rod for driving the valve plug to move; The device includes a fixedly arranged energized coil, an iron core that moves with the change of the water level, and a signal detection structure of the energized coil, or the water level detection device includes a fixedly arranged iron core, an energized coil that moves with the change of the water level, and an energized coil The signal detection structure, the iron core is located within the induction range of the coil. This kind of water level detection device has a simple structure and low failure rate. It is integrated with the drainage control mechanism to reduce the cost. The drainage control mechanism directly detects the water level of the inner bucket with high accuracy. There are no pipelines, air chambers and other structures for detection. It truly realizes the isolation of the inner and outer barrels of the non-porous inner barrel technology, avoiding cross-infection caused by bacteria growing in the outer barrel.

Description

A 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 technique

In the existing pulsator type washing machine, there is a permeable hole in the inner barrel, and the inner and outer barrels are connected. The water that participates in washing is only the part in the inner tub, which leads to greater waste of water resources. In addition, too much water between the inner and outer tubs will also reduce the concentration of detergent/washing powder in the washing liquid. At the same time, due to the frequent flow of water in and out between the inner barrel and the outer barrel, after continuous use, the area between the side walls of the inner barrel and the outer barrel has also become a space for dirt. The cellulose of clothes, the organic matter of the human body and the dust and bacteria brought in by the clothes are very likely to stay between the side walls of the inner tub and the outer tub. These molds are caused by a large amount of dirt accumulated inside the washing machine that has been used for a long time and cannot be effectively removed to breed and reproduce. If the dirt that is invisible to the user is not removed, the bacteria will adhere to the clothes again after the next wash. Bring to the human body, causing the problem of cross-infection.

The 200420107890.8 patent relates to a fully automatic washing machine, which mainly includes a box body, a washing and dehydrating bucket, a bucket and a driving device. There is a sealing device between the bottom surfaces, and a sealed cavity is formed in the sealing device; the outer wall of the washing and dehydrating bucket has no through hole, and the bottom is provided with a drain port connected with the sealed cavity; the water tank has a drain port connected with the drain pipe , The drain pipe is provided with a drain valve.

In the existing research, there is also a washing machine without water between the inner tub and the outer tub when washing. The upper part of the inner tub is provided with a plurality of water throwing holes near the edge, and the bottom of the inner tub is provided with at least one inner tub drain outlet. The drainage control mechanism for blocking the drainage hole, the drainage control mechanism at least includes a retractable valve plug, the valve plug moves upward to close the drainage hole, and the valve plug moves downward to open the drainage hole.

In the above-mentioned washing machine without water between the inner and outer tubs, the water tub is the inner tub, and the inner tub needs to be rotated during dehydration, so there is no way to use the existing series of structures such as water passage/air chamber/pressure guiding tube/pipe clamp/water level sensor and so on. The water level detection structure formed by the combination of components leads to the detection water level from the outer barrel, and if the detection water level needs to lead to the corresponding detection pipeline from the inner barrel, it is impossible to realize the isolation of the inner and outer barrels in the true sense, and the existing water level detection structure is relatively complicated , The assembly process is relatively cumbersome, and it is prone to air leakage between the detection pipeline and the gas chamber, as well as between the detection pipeline and the sensor, thereby affecting the accuracy of the detection and causing the failure of the whole machine. The complex structure leads to relatively high costs.

In view of this, the present invention is proposed.

Contents of the invention

The object of the present invention is to overcome the deficiencies of the prior art, and provide a drainage control mechanism and a washing machine, which can realize water level detection while controlling drainage.

In order to achieve this goal, the present invention adopts the following technical solutions: a drainage control mechanism, including: a valve plug capable of blocking the drain outlet, a piston rod that drives the valve plug to move, the end of the valve plug is facing the position of the drain outlet Set the water level detection device.

The water level detection device includes a fixed energized coil, an iron core that moves with the change of the water level, and a signal detection structure of the energized coil, or the water level detection device includes a fixedly installed iron core, an energized coil that moves with the change of the water level. The signal detection structure of the coil and the energized coil, the iron core is located within the induction range of the coil.

The water level detection device includes a fixed energized coil, an iron core that moves with changes in the water level, and a signal detection structure for the energized coil. The iron core is fixed on a movable piece, and one side of the movable piece is facing the drain. The other side is connected with an elastic piece, and the other end of the elastic piece is fixedly arranged.

The valve plug is provided with an accommodation cavity, and the side of the accommodation cavity facing the drain port is provided with an opening, and an elastic diaphragm is arranged at the opening, and the water level detection structure is arranged in the accommodation chamber, and the elastic diaphragm covers the valve plug and faces toward the drain. Part or all of one end of the port, preferably the elastic membrane covers the end of the valve plug.

The fixed end of the elastic member is fixed on the bottom of the valve plug accommodating chamber, or the fixed end of the elastic member protrudes from the bottom of the valve plug accommodating chamber and is fixed on the top of the piston rod. On the top of the accommodation cavity, the side of the movable piece facing the water outlet is attached or fixed to the elastic diaphragm.

Adjusting screws are provided at the bottom of the accommodation cavity or at the top of the piston rod where the elastic member is fixed.

The piston rod is a hollow structure, and the inside of the piston rod is provided with a power supply line of the energized coil and/or a signal connection line of the energized coil.

The top of the valve plug is provided with at least one ring of sealing part. When the drainage control mechanism blocks the drain outlet, the sealing part on the top of the valve plug is closely attached to the bottom of the outer barrel around the drain outlet. Preferably, the sealing part is an elastic structure Or the elastic membrane at least covers the sealing portion at the top of the valve plug.

The drain port is a trumpet structure with a large top and a small bottom. When the drain control mechanism blocks the drain port, the valve plug extends into the drain port, and the intersection of the top and the side of the valve plug is closely attached to the inner wall of the drain port. Preferably, the intersection of the top and the side of the valve plug is an elastic structure or the elastic diaphragm covers the entire top of the valve plug and is bent down to cover part of the side of the valve plug.

A washing machine with the above-mentioned drainage control mechanism.

After adopting the technical solution of the present invention, the following beneficial effects are brought: after the valve plug of the drainage control mechanism of the present invention blocks the drain, the position of the valve plug facing the drain contacts with the water in the inner tub, The water level detection device installed at the top can detect the height of the water level in the inner barrel, and after the drainage control mechanism opens the drain, the water level detection device will retract to the bottom of the outer barrel with the valve plug, and the inner barrel will not be affected in any way when it rotates. This kind of water level detection device has a simple structure and low failure rate. It is integrated with the drainage control mechanism to reduce the cost, and the drainage control mechanism directly detects the water level of the inner bucket with high accuracy. There are no pipelines, air chambers and other structures for detection. It truly realizes the isolation of the inner and outer barrels of the non-porous inner barrel technology, avoiding cross-infection caused by bacteria growing in the outer barrel.

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1: Structural diagram of the washing machine of the present invention

Figure 2: Structural diagram of the drainage control mechanism of the present invention

Figure 3: Structural diagram of the valve plug of the present invention

Among them: 100, inner barrel, 101, drain port, 102, drain hole, 103, inner barrel bottom, 200, outer barrel, 300, drainage control mechanism, 301, valve plug, 302, piston rod, 303, bellows, 305, iron Core, 306, energized coil, 307, movable piece, 308, elastic member, 309, elastic diaphragm, 310, accommodation chamber, 311, adjusting screw, 312, power supply line, 313, first spring, 314, second spring, 315 , valve seat, 316, driving motor.

detailed description

As shown in Figure 1, the washing machine according to the present invention comprises an inner tub 100 and an outer tub 200, the inner tub body has no leaking holes communicating with the outer tub, the inner tub bottom 103 is provided with a drainage port 101, and the upper part of the inner tub body is provided with a circle of drainage holes 102 , when washing, the drain control mechanism controls the drain port 101 to close, the water level is lower than the height of the drain hole 102, only the inner tub 100 has water, and there is no water between the inner tub 100 and the outer tub 200, after the washing is finished, the drain control mechanism controls The drain port 101 is opened, and most of the water is drained from the drain port 101. During dehydration, the inner tub 100 rotates, and the water detached from the clothes rises along the tub wall under the action of centrifugal force, and is discharged from the inner tub through the drainage hole 106 on the upper part of the inner tub to between the inner and outer tubs. and then discharged through the drain port of the outer tub 200, so that the washing water is only stored in the inner tub 100 during washing, and there is no washing water between the inner and outer tubs, saving water. At the same time, the area between the inner tub 100 and the side wall of the outer tub 200 Dirt will accumulate, so that the inner and outer barrels are cleaned to avoid breeding bacteria; during the drainage and/or dehydration process, the drain port 101 is opened, and most of the water, silt, particles and other sediments are discharged from the lower drain port 101 to the outer barrel In the washing machine, the water in the clothes is discharged into the outer tub through the drain hole 102 on the upper part of the inner tub when the inner tub is spin-dried at high speed, and is directly discharged out of the washing machine from the drain port and the drain pipe at the bottom of the outer tub, realizing the effect of fast drainage, drainage and sewage discharge it is good.

In the present invention, a drainage control mechanism 300 for controlling the opening/closing of the drainage outlet 101 is provided at the bottom of the drainage outlet 101. The drainage control mechanism 300 is installed on the outer bucket, and the drainage outlet 101 is on the inner bucket. When the drainage outlet 101 needs to be blocked, the inner bucket is controlled to rotate to drain. The outlet 101 is facing the position of the drainage control mechanism 300. Control the action of the drainage control mechanism 300 to block the drainage outlet 101. When it is necessary to open the drainage outlet 101, control the action of the drainage control mechanism 300 to open the drainage outlet 101, and the inner tub can rotate. During the washing process , the drain control mechanism 300 blocks the drain outlet 101 during water intake and washing, controls the drain outlet 101 to close, and the drain control mechanism 300 controls the drain outlet 101 to open during draining and dehydration.

The water level detection structure of the existing washing machine includes a waterway, an air chamber, a pressure guiding pipe, a pipe clamp, and a water level sensor. It is an outer tub, and the outer tub is fixed, so it is easy to draw water from the outer tub to the air chamber, but there is no water between the inner and outer tubs of the washing machine described in this application, and the water tub is the inner tub, so it is already necessary to guide the water flow from the outer tub to the air chamber. Can not realize the detection of water level, and inner bucket rotates when dehydrating, is difficult to draw water flow to air chamber from unfixed inner bucket and carries out water level detection.

In the present application, the control mechanism for controlling the drainage of the inner bucket must block the drain outlet 101 when there is water in the inner bucket for washing and rinsing, and the valve plug can be in contact with the water in the inner bucket, as shown in Figure 2 and Figure 3. This application proposes a drainage control mechanism 300, which can control the opening/closing of the drainage port 101, and can also detect the water level in the inner tub after closing the drainage port 101. The drainage control mechanism includes: a device capable of sealing the drainage port The valve plug 301 and the piston rod 302 driving the valve plug 301 to move, the end of the valve plug 301 facing the water outlet 101 is provided with a water level detection device. After the valve plug 301 blocks the drain port 101, the position where the valve plug 301 faces the drain port 101 is in contact with the water in the inner tub 100, and a water level detection device is installed there to detect the water level in the inner tub, and the drainage control mechanism After the 300 opens the drain, the water level detection device will retract to the bottom of the outer bucket along with the valve plug 301, and the inner bucket 100 will not be affected in any way when it rotates.

The water level detection device includes a energized coil 306, an iron core 305 and a signal detection structure. The signal detection structure is connected to the energized coil 306 to detect changes in electrical signals in the energized coil 306, and the electrical signal is a current signal or a voltage signal. Preferably, the signal detection structure is a detection circuit, as long as the detection circuit can detect the current signal or voltage signal of the energized coil, the energized coil 306 transmits the current signal or voltage signal to the detection circuit through the information signal connection line , the detection circuit transmits the detected electrical signal to the controller of the washing machine.

The water level detection device includes a fixedly installed energized coil 306 and an iron core 305 that moves with the change of the water level. The change of the water level affects the movement of the iron core 305, and the iron core 305 affects the variation of the current in the energized coil 306 at different positions. The height of the water level in the inner barrel can be obtained by detecting the magnitude of the current in the energized coil 306. Different water levels correspond to different current values, thereby realizing accurate detection of water levels.

Or the water level detection device includes a fixed iron core 305 and an energized coil 306 that moves as the water level changes. The change of the water level affects the movement of the energized coil 306. The distance between the energized coil 306 and the iron core 305 is different at different positions. The influence of the core 305 on the energized coil 306 is different, and the height of the water level in the inner tub can be obtained by detecting the magnitude of the current in the energized coil 306 . Different water levels correspond to different current values, thereby realizing accurate detection of water levels.

In the above two cases, the iron core 305 is located within the induction range of the energized coil 306 , ensuring that changes 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 has a simple structure and low failure rate. It is integrated with the drainage control mechanism to reduce the cost, and the drainage control mechanism directly detects the water level of the inner bucket with high accuracy. There are no pipelines, air chambers and other structures for detection. It truly realizes the isolation of the inner and outer barrels of the non-porous inner barrel technology, avoiding cross-infection caused by bacteria growing in the outer barrel.

A preferred water level detection device includes a fixedly arranged energized coil 306 and an iron core 305 that moves with changes in the water level. Because the energized coil 306 needs to be energized and its electrical signal needs to be detected, the energized coil 306 is set to be fixed. Easy to install, the iron core 305 is fixed on a movable piece 307, one side of the movable piece 307 faces the water outlet 101, and the other side is connected with an elastic piece 308, and the other end of the elastic piece 308 is fixedly arranged. The water in the inner bucket will directly or indirectly act on the movable piece 307, and the movable piece 307 will move, driving the position of the iron core 305 to move, affecting the current in the energized coil 306, detecting the current in the energized coil 306, different current Values correspond to different water levels, thereby realizing accurate detection of water levels.

Preferably, the upper end of the iron core 305 is provided with a concave portion, and the bottom of the movable piece 307 is provided with a convex portion, and the convex portion of the movable piece extends into the concave portion of the iron core, and the convex portion of the movable piece and the shape of the concave portion of the iron core , the size matches, the lower end of the iron core is provided with another recess, the end of the elastic member extends into the recess at the lower end of the iron core to realize the connection, and the recess at the lower end of the iron core is provided with a positioning column, elastic The end of the piece is provided with a positioning hole, and the positioning column in the concave portion at the lower end of the iron core matches the positioning hole at the end of the elastic piece. Preferably, the elastic member is a spring, and the end of the spring extends into the recess at the lower end of the iron core, and the positioning post in the recess at the lower end of the iron core extends into the interior of the spring to achieve positioning. This connection method is easy to install and stable.

The valve plug 301 is provided with an accommodating chamber 310, and the accommodating chamber 310 is provided with an opening on the side facing the drain port 101, and an elastic diaphragm 309 is arranged at the opening, and the water level detection structure is arranged in the accommodating chamber 310, and the elastic diaphragm 309 covers part or all of one end of the valve plug 301 facing the water outlet, preferably the elastic diaphragm 309 covers the end of the valve plug 301 . The water level detection structure is arranged in the accommodating cavity 310 inside the valve plug 301 without affecting the control of the valve plug to the drain port, and can realize the detection of the water level of the inner bucket by the water level detection device.

The fixed end of the elastic member 308 is fixed on the bottom of the accommodation chamber 310 of the valve plug 301, or the fixed end of the elastic member 308 protrudes from the bottom of the accommodation chamber 310 of the valve plug 301 and is fixed on the top of the piston rod 302, The movable piece 307 is located on the top of the accommodating cavity 310 , and the side of the movable piece 307 facing the water outlet is attached or fixed to the elastic diaphragm 309 . The rise of the water level in the inner barrel will compress the elastic diaphragm 309, the movable piece 307 and the elastic member 308 downward, and drive the iron core 305 to move downward, which will affect the current in the energized coil. water level.

An adjustment screw 311 is provided at the bottom of the accommodation chamber 310 or the top of the piston rod 302 where the elastic member is fixed. The adjusting screw can fine-tune the position of the elastic member to detect the water level more accurately.

The piston rod 302 is a hollow structure, and the inside of the piston rod 302 is provided with a power supply line of the energization coil and/or a signal connection line of the power supply coil.

The top of the valve plug 301 is provided with at least one ring of sealing portion. When the drainage control mechanism blocks the drain outlet, the sealing portion on the top of the valve plug is in close contact with the outer barrel bottom of the outer periphery of the drain outlet. Preferably, the sealing portion is of an elastic structure or The elastic membrane 309 at least covers the sealing portion on the top of the valve plug. The structure of the water outlet with this structure is not restricted by too many structures, and the processing is simple. The elastic diaphragm 309 not only plays the role of sealing the water level detection device, but also plays the role of sealing the valve plug and the drain.

In yet another embodiment of the present invention, the drain port 101 is a trumpet structure with a large top and a small bottom. When the drain control mechanism blocks the drain port, the valve plug 301 extends into the drain port, and the top and side of the valve plug intersect It fits closely with the inner wall of the drain port. Preferably, the intersection of the top and side of the valve plug 301 is an elastic structure or the elastic diaphragm 309 covers the entire top of the valve plug and bends down to cover part of the side of the valve plug. The elastic diaphragm 309 not only plays the role of sealing the water level detection device, but also plays the role of sealing the valve plug and the drain.

The piston rod 302 is connected with a driving motor 316 , and the driving motor 316 drives the reciprocating motion of the piston rod 302 . Or the piston rod 302 is a hollow structure, and the end facing the valve plug 301 is a closed end, and a first spring 313 is arranged inside the piston rod 302, and one end of the first spring 313 is connected to the closed end, and the other end is connected to the drive motor 313, The driving motor 313 drives the first spring 313 , and the first spring 313 drives the piston rod 302 to reciprocate, so as to prevent the driving motor 316 from being directly connected with the rigid piston rod 302 to generate impact on the driving motor 316 .

The drainage control mechanism 300 is installed at the bottom of the outer tub of the washing machine, the valve plug 301 is connected to a bellows 303, one end of the bellows 303 is connected to the valve plug 301, and the other end is connected to the bottom of the outer tub, preferably the valve plug 301 and the corrugated pipe The tube 303 is integrally formed, and the bellows 303 has a certain degree of flexibility, so that the piston rod 302 can always keep the outer barrel sealed when the piston rod 302 has a certain reciprocating range.

The piston rod 302 is provided with a second spring 314. One end of the second spring 314 is against the valve plug 301, and the other end is fixed. The second spring 314 can provide a certain driving force when the valve plug 301 moves upward. The control mechanism 300 also includes a valve seat 315, the valve seat 315 is the installation seat of the drainage control structure 300, and is installed on the outside of the bottom of the outer barrel 200. There is a second spring 314, one end of the second spring 314 is against the valve plug 301, and the other end is against the valve seat 312, when the valve plug 301 moves downward, the second spring 314 is compressed, and when the valve plug 301 moves upward The spring 314 recovers, and the second spring 314 can provide a certain driving force when the valve plug 301 moves upward.

The above description is only a preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, various modifications and improvements can be made, which should also be regarded as the present invention. protection scope of the invention.

Claims (10)

1. a kind of drainage control mechanism, including：Can block discharge outlet valve plug, drive plug movement piston rod, its It is characterised by：The end of the valve plug just sets condensate tank of dehumidifier to the position of discharge outlet.

2. a kind of drainage control mechanism according to claim 1, it is characterised in that：The condensate tank of dehumidifier bag The hot-wire coil being fixedly installed, the iron core moved with the change of water level height and the signal detection structure of hot-wire coil are included, or Condensate tank of dehumidifier described in person includes the iron core, mobile hot-wire coil and the live wire with the change of water level height that are fixedly installed The signal detection structure of circle, the iron core is located in the induction range of the coil.

3. a kind of drainage control mechanism according to claim 2, it is characterised in that：The condensate tank of dehumidifier bag Include the hot-wire coil being fixedly installed, the iron core moved with the change of water level height and the signal detection structure of hot-wire coil, institute State iron core to be fixed on an activity template, just to discharge outlet, opposite side connects an elastic component, the bullet for the activity template side The other end of property part is fixedly installed.

4. according to a kind of any described drainage control mechanisms of claim 1-3, it is characterised in that：The valve plug is provided with One accommodating chamber, accommodating chamber is provided with opening towards the side of discharge outlet, and elastic diaphragm, the water level detecting knot are set at opening Structure is arranged in the accommodating chamber, and the elastic diaphragm covers valve plug towards the part or all of of one end of discharge outlet, excellent The elastic diaphragm is selected to cover the end of valve plug.

5. a kind of drainage control mechanism according to claim 4, it is characterised in that：The fixing end of the elastic component It is fixed on the bottom of the valve plug accommodating chamber, or the fixing end of the elastic component is stretched out the bottom of valve plug accommodating chamber and is fixed on The top of the piston rod, the activity template is located at the top of the accommodating chamber, side and bullet of the activity template just to discharge outlet Property barrier film laminating or fixed.

6. a kind of drainage control mechanism according to claim 5, it is characterised in that：The bottom of the accommodating chamber or The top of piston rod described in person is fixed at the elastic component and is provided with adjusting screw.

7. according to a kind of any described drainage control mechanisms of claim 2-6, it is characterised in that：The piston rod is Hollow structure, the inside of the piston rod sets the supply lines of hot-wire coil and/or the signal connecting line of hot-wire coil.

8. according to a kind of any described drainage control mechanisms of claim 1-6, it is characterised in that：The valve plug top At least one circle sealing is provided with, during drainage control mechanism closure discharge outlet, outside the sealing and discharge outlet at the top of the valve plug The outer barrel bottom in week is brought into close contact, and preferably described sealing is that elastic construction or the elastic diaphragm at least cover valve plug top The sealing in portion.

9. according to a kind of any described drainage control mechanisms of claim 1-6, it is characterised in that：The discharge outlet is Up big and down small bell-mouth structure of air, during drainage control mechanism closure discharge outlet, the valve plug stretches into discharge outlet, the top of valve plug Portion is brought into close contact with the inwall of sidepiece intersection and discharge outlet, preferably the top of valve plug and sidepiece intersection be elastic construction or Elastic diaphragm described in person covers valve plug top all and is bent to the sidepiece for covering part valve plug downwards.

10. a kind of washing machine with any drainage control mechanisms of claim 1-9.