CN106245268A - A kind of control method preventing Drain Valve of Washing Machine from leaking and washing machine thereof - Google Patents

Abstract

The invention provides a control method for preventing the water leakage of the drain valve of the washing machine. The washing machine executes the anti-drain valve leakage control program before the water enters or after the water is drained. step. The invention also provides a washing machine adopting the control method. The control method for preventing water leakage of the drain valve of the present invention can ensure that the valve plug and the valve body can be completely sealed when the valve is closed again, regardless of whether there is any debris between the valve plug and the valve body. Therefore, the control method for preventing water leakage of the drain valve of the present invention adopts the control logic of priority judgment, which is relatively simple to implement and easy to control.

Description

A control method for preventing water leakage from a drain valve of a washing machine and its washing machine

technical field

The invention relates to the technical field of treatment for preventing water leakage from a drain valve of a washing machine, in particular to a control method for preventing water leakage from a drain valve of a washing machine and a washing machine thereof.

Background technique

With the improvement of people's quality of life, the frequency of use of washing machines is getting higher and higher, and people's requirements for washing machines are also getting higher and higher. Therefore, whether the washing machine can be used normally for a long time and avoid the shutdown of the washing machine caused by a fault report for repair has attracted more and more attention and attention.

Existing washing machines mostly adopt the drainage mode of lower drainage. During the washing process of laundry, some laundry lint will inevitably be produced, and small items such as coins, toothpicks, and paper clips that have not been taken out of the laundry pockets may also fall into the washing machine. During the drainage process, these sundries remain on the stroke path of the drain valve plug, and when the drain valve is closed after the draining is completed, these sundries will be stuck between the valve plug and the valve body, causing the valve plug to not be completely sealed. The washing water in the drum flows out from the gap, causing the water level to drop during the washing process, and the washing machine alarms. Therefore, the drain valve caused by sundries cannot be closed normally, which not only wastes a lot of energy and water, but also brings inconvenience to users.

In order to solve the above problems, there are currently methods of increasing the stroke of the valve plug or increasing the diameter of the valve body, but none of them can fundamentally solve the problem of water leakage caused by sundries in the drain valve.

In addition, many patents have proposed solutions to the above problems. For example, the application number is 97240668.9, which is a Chinese utility model patent named a new drain valve. The new drain valve is composed of a valve body and a valve plug assembly. A sealing ring is provided on the end surface of the water outlet, and the end of the valve plug in the valve plug assembly is a spherical surface. When the drain valve is closed, the spherical surface presses against the sealing ring. Due to the use of ball plugs for positioning and reducing the sealing area, the sealing performance and service life are greatly improved. Widely used in washing machines, sanitary equipment, building air supply and exhaust engineering and other fields.

The above-mentioned patent uses a spherical valve plug to enhance the sealing performance and prevent water leakage by changing the structure. Sundries such as coins, paper clips, etc., even if a spherical valve is used, the valve plug and the closed ring cannot be sealed due to the existence of hard sundries, and the design of the spherical surface is therefore invalid.

In view of this, the present invention is proposed.

Contents of the invention

In order to solve the above problems, the present invention provides a control method for preventing water leakage from the drain valve of the washing machine. Specifically, the following technical solutions are adopted:

A control method for preventing water leakage of a drain valve of a washing machine. The washing machine executes a water leakage control program of the anti-drain valve before water intake or after draining.

Further, the number of opening and closing actions of the drain valve in the anti-drain valve leakage control program is X, where X is the setting value of the washing machine, X≥1, preferably X≥2; or X can be determined according to the blockage of the drain valve Case resizing.

Further, the described anti-drain valve leakage control program also includes the step of washing the washing machine with water to a certain level, and opening the drain valve again for flushing.

Further, the washing machine opens the drain valve for flushing after the water enters to a certain level; or the washing machine keeps the drain valve open for flushing while entering the water.

Further, the water leakage control program of the anti-drain valve includes:

Step 1) control the drain valve to close;

Step 2) Control the drain valve to perform opening and closing actions;

Step 3) The washing machine executes the water intake process, and stops the water intake process when the set water level h is reached;

Step 4) control the drain valve to open;

Step 5) When the washing machine judges that the water has been drained, control the drain valve to close;

Wherein, the set water level h is lower than the minimum washing water level of the washing machine.

Further, the water leakage control program of the anti-drain valve is executed before the washing process of the washing machine starts to take in water, or is executed after the washing/rinsing process is drained, or is executed before or after the dehydration process starts.

As a preferred embodiment of the present invention, a control method of the present invention for preventing water leakage from the drain valve of the washing machine includes:

Step 1) start the washing machine;

Step 2) The washing machine executes the water leakage control program of the anti-drain valve;

Step 3) Control the drain valve to open and close;

Step 4) The washing machine judges whether the number of opening and closing actions of the drain valve reaches X times;

Step 5) If the judging result is no, return to step 3), if the judging result is yes, the washing machine starts to enter water and executes the washing process.

As a preferred embodiment of the present invention, the present invention provides a control method for preventing water leakage from the drain valve of the washing machine, comprising:

Step 1) start the washing machine;

Step 2) The washing machine executes the washing/rinsing process;

Step 3) After the washing/rinsing process is finished, control the drain valve to open to discharge the washing water;

Step 4) After the washing water is drained, control the drain valve to close;

Step 5) The washing machine executes the anti-drainage valve leakage control program;

Step 6) Control the drain valve to open and close;

Step 7) The washing machine judges whether the number of opening and closing actions of the drain valve reaches X times;

Step 8) If the judgment result is no, return to step 6), if the judgment result is yes, enter the dehydration program.

As a preferred embodiment of the present invention, a control method of the present invention for preventing water leakage from the drain valve of the washing machine includes:

Step 1) start the washing machine;

Step 2) The washing machine performs a dehydration or drainage process;

Step 3) control the drain valve to open;

Step 4) The washing machine judges whether the dehydration or drainage process is over;

Step 5) If the judgment result is yes, then enter step 6), if the judgment result is no, then enter step 3);

Step 6) control the drain valve to close;

Step 7) The washing machine executes the anti-drainage valve leakage control program;

Step 8) Control the drain valve to open and close;

Step 9) The washing machine judges whether the number of opening and closing actions of the drain valve reaches X times;

Step 10) If the judgment result is no, return to step 8), if the judgment result is yes, enter the rinsing process or end.

As a preferred embodiment of the present invention, the drain valve of the present invention includes a valve body, on which a water outlet pipe is arranged to communicate with it, and the water outlet pipe is arranged vertically downward or obliquely downward.

The present invention also provides a washing machine adopting the control method for preventing water leakage of the drain valve.

The control method for preventing water leakage of the drain valve of the present invention is mainly to control the drain valve to perform at least one opening and closing action before the washing machine enters water or after draining water. The objects fall under their own gravity and are discharged from the drain port of the drain valve, which avoids the phenomenon of water leakage caused by debris stuck in the drain valve after the washing machine is filled with water.

The control method for preventing water leakage of the drain valve of the present invention, regardless of whether there is any debris between the valve plug and the valve body, the invention can remove the debris between the valve plug and the valve body, and ensure that the valve plug is closed when the valve is closed again. It can be completely sealed with the valve body.

The control method for preventing water leakage of the drain valve of the present invention adopts the control logic of priority judgment, which is relatively simple to implement and easy to control.

The control method for preventing water leakage of the drain valve of the present invention utilizes the washing time rationally, and the judgment method is accurate without misjudgment.

Description of drawings

Fig. 1 is the block flow diagram of Embodiment 1 of the present invention;

Fig. 2 is a block flow diagram of Embodiment 2 of the present invention;

Fig. 3 is a block flow diagram of Embodiment 3 of the present invention;

Fig. 4 is a structural schematic diagram of the drain valve of the present invention.

Explanation of symbols in the drawings: 1-water inlet pipe 2-valve body 3-first pump head 4-first water outlet pipe 5-stuck debris 6-second water outlet pipe 7-second pump head.

detailed description

A kind of control method that prevents the water leakage of washing machine drain valve of the present invention is described in detail below in conjunction with accompanying drawing:

A control method for preventing water leakage of the drain valve of a washing machine according to the present invention, the washing machine executes the anti-drain valve leakage control program before water intake or after draining, and the anti-drain valve leakage control program includes the step of controlling the drain valve to open and close again after it is closed .

The control method for preventing water leakage of the drain valve of the present invention is mainly to control the drain valve to perform at least one opening and closing action before the washing machine enters water or after draining water. The objects fall under their own gravity and are discharged from the drain port of the drain valve, which avoids the phenomenon of water leakage caused by debris stuck in the drain valve after the washing machine is filled with water.

The reason why the present invention executes the anti-drainage valve leakage control program before the washing machine enters the water is to avoid the debris left in the drain valve after the last laundry and cause the laundry to leak this time, and to ensure that the drain valve is always in the position before the washing machine starts washing each time. A well-sealed condition allows the washing machine to work properly. In addition, the water leakage control program of the anti-drain valve of the present invention can be executed before the first water intake when the washing machine is washing each time, and can also be executed before each water intake when washing each time.

However, the anti-drainage valve leakage control program is executed after the drainage, because during each drainage process, there may be sundries accompanying the flow into the drain valve. In order to prevent the sundries from being completely discharged, ensure that the subsequent washing process of the washing machine able to proceed smoothly. In addition, the water leakage control program of the anti-drain valve of the present invention can be executed after the last drain of the washing machine every time it is washed, or after every drain of water every time it is washed.

The water leakage control program of the anti-drainage valve of the present invention can be executed only before the washing machine enters the water, or only after the washing machine is drained, or it can be executed before each time the washing machine enters the water and after each draining, and it can be used automatically according to the actual use. choose.

Since the present invention mainly relies on the gravity of the sundries to fall when the drain valve is quickly opened and closed, therefore, in order to ensure that the sundries stuck in the valve body can fall at the instant when the drain valve is opened, it is mainly realized by the following two methods:

1. Appropriately extend the opening time of the drain valve: when the washing machine executes the anti-drain valve leakage control program, the valve is opened for a certain period of time t1 before closing; preferably, 2s≤t1≤5s.

2. Increase the number of opening and closing of the drain valve: the number of opening and closing actions of the drain valve in the anti-drain valve leakage control program is X, where X is the set value of the washing machine, X≥1, preferably X≥2; or X can be based on The blockage of the drain valve is adjusted to size.

The advantage of the first method above is that it can reduce the number of opening and closing of the drain valve. The advantage of the second method is that the continuous opening and closing action of the drain valve and the continuous movement of the valve plug continuously act on the sundries, which is more conducive to the discharge of sundries. . The above two methods can be carried out independently or in combination with each other.

In order to further improve the sundry discharge capacity of the drain valve of the anti-drainage valve leakage control program of the present invention, as a preferred embodiment of the present invention, the anti-drainage valve leakage control program also includes the washing machine entering water to a certain water level, Open the drain valve again to flush.

Specifically, the washing machine opens the drain valve for flushing after the water enters to a certain level; or the washing machine keeps the drain valve open for flushing while entering the water.

Like this, the present invention discharges by opening and closing the drain valve so that the sundries fall under the action of gravity, and uses water flow to wash away the sundries to be discharged, and the mode of opening and closing the drain valve is aimed at sundries with a certain mass or volume ( Such as coins, pins, etc.) are more effective, and the way of water washing is more effective for lighter or smaller debris (such as cloth strips, paper towels, etc.). Therefore, the present invention, through the combination of these two methods, the effect of removing sundries of the drain valve is more obvious, ensures that the seal of the drain valve is intact, and avoids water leakage.

Specifically, the water leakage control program of the anti-drainage valve of the present invention includes:

Step 1) control the drain valve to close;

Step 2) Control the drain valve to perform opening and closing actions;

Step 3) The washing machine executes the water intake process, and stops the water intake process when the set water level h is reached;

Step 4) control the drain valve to open;

Step 5) When the washing machine judges that the water has been drained, control the drain valve to close;

Wherein, the set water level h is lower than the minimum washing water level of the washing machine.

In the present invention, the set water level h of the anti-drainage valve leakage control program is set to be lower than the minimum washing water level of the washing machine, which can shorten the water inlet time and avoid affecting the normal washing process of the washing machine.

As a preferred embodiment of the present invention, the set water level h is less than or equal to 1/5 of the minimum washing water level of the washing machine.

Combined with the actual working state of the washing machine, the water leakage control program of the anti-drain valve of the present invention is executed before the washing process of the washing machine starts to take in water, or is executed after the washing/rinsing process is drained, or is executed before the dehydration process starts.

As a preferred embodiment of the present invention, the anti-drainage valve leakage control program of the present invention can be integrated in the control program of the washing machine as an independent program, and corresponding buttons are set on the control panel of the washing machine for users to select Execution to meet the needs of users. Even the values of X and h can be displayed on the control panel for the user to choose, so as to meet the user's requirements to the greatest extent.

The water leakage control program of the anti-drainage valve of the present invention can also be used as a part of the washing program of the washing machine, which has the advantage that the washing machine can completely handle itself, which greatly facilitates the use of users.

Therefore, the control method for preventing drain valve leakage of the present invention has the following technical effects:

(1) The control method for preventing water leakage of the drain valve of the present invention, regardless of whether there is any debris between the valve plug and the valve body, the invention can remove the debris between the valve plug and the valve body to ensure that the valve is closed again When the valve plug and the valve body can be completely sealed.

(2) The control method for preventing water leakage of the drain valve of the present invention adopts the control logic of priority judgment, which is relatively simple to implement and easy to control.

(3) The control method for preventing water leakage of the drain valve of the present invention utilizes the washing time rationally, and the judging method is accurate, and misjudgment does not occur.

Embodiment one

As shown in Figure 1, a control method for preventing water leakage from the drain valve of the washing machine in this embodiment includes:

Step 1) start the washing machine;

Step 2) The washing machine executes the water leakage control program of the anti-drain valve;

Step 3) Control the drain valve to open and close;

Step 4) The washing machine judges whether the number of opening and closing actions of the drain valve reaches X times;

Step 5) If the judging result is no, return to step 3), if the judging result is yes, the washing machine starts to enter water, and executes the subsequent process.

The subsequent process in step 5) of this embodiment may be a washing process, a rinsing process or a dehydration process, which is selected by the user.

In this embodiment, the anti-drainage valve leakage control program is executed before the washing machine starts for the first time to ensure that the drain valve is in a well-sealed state before the washing machine starts to work, and the washing machine can work normally.

Embodiment two

As shown in Figure 2, a control method for preventing water leakage from the drain valve of the washing machine in this embodiment includes:

Step 1) start the washing machine;

Step 2) The washing machine executes the washing process;

Step 3) The washing machine judges whether the washing process is over;

Step 4) If the judgment result is yes, then go to step 5), if the judgment result is no, then return to step 2)

Step 5) Control the drain valve to open to discharge the washing water;

Step 6) Laundry judges whether the washing water is drained;

Step 7) If the judgment result is yes, then enter step 8), if the judgment result is no, then return to step 5);

Step 8) control the drain valve to close;

Step 9) The washing machine executes the water leakage control program of the anti-drain valve;

Step 10) controlling the drain valve to open and close;

Step 11) The washing machine judges whether the number of opening and closing actions of the drain valve reaches X times;

Step 12) If the judgment result is no, return to step 10), if the judgment result is yes, enter the dehydration process.

In this embodiment, the anti-drainage valve leakage control program is executed after the washing process is drained, because in the drainage process of each washing process, there may be sundries accompanying the flow into the drain valve. In order to prevent the sundries from being completely discharged, ensure that The subsequent dehydration process of the washing machine can be carried out smoothly.

In addition, the water leakage control program of the anti-drain valve in this embodiment is also applicable to be executed after the rinsing process.

Embodiment three

As shown in Figure 3, a control method for preventing water leakage from the drain valve of the washing machine in this embodiment includes:

Step 1) start the washing machine;

Step 2) The washing machine performs a dehydration or drainage process;

Step 3) control the drain valve to open;

Step 4) The washing machine judges whether the dehydration or drainage process is over;

Step 5) If the judgment result is yes, then enter step 6), if the judgment result is no, then enter step 3);

Step 6) control the drain valve to close;

Step 7) The washing machine executes the anti-drainage valve leakage control program;

Step 8) Control the drain valve to open and close;

Step 9) The washing machine judges whether the number of opening and closing actions of the drain valve reaches X times;

Step 10) If the judgment result is no, return to step 8), if the judgment result is yes, enter the rinsing process or end.

In this embodiment, the anti-drainage valve leakage control program is executed after the dehydration process drains, because during the drainage process of each dehydration process, there may be debris accompanying the flow into the drain valve. In order to prevent the debris from being completely discharged, ensure that The subsequent rinsing process of the washing machine or the next washing process can be carried out smoothly.

Similarly, the control method of this embodiment is also applicable to be executed before the dehydration process starts.

Embodiment Four

As shown in FIG. 4 , the drain valve of this embodiment includes a valve body 2 , on which a water outlet pipe is arranged to communicate with it, and the water outlet pipe is arranged vertically downward or obliquely downward.

This is mainly because the anti-drainage valve leakage control program of the present invention mainly relies on the sundries to fall and be discharged by gravity when the drain valve is opened. Falling from the outlet pipe under action.

Specifically, the valve body 2 of the drain valve in this embodiment is provided with a water inlet pipe 1, and the water outlet pipe includes a first water outlet pipe 4 and a second water outlet pipe 6, the first water outlet pipe 4 is opened and closed by the first pump head 3, and the second water outlet pipe The opening and closing of the second water outlet pipe 6 is controlled by the second pump head 7 . Therefore, the washing machine in this embodiment realizes the opening and closing of the drain valve substantially by controlling the first pump head 3 and the second pump head 7 .

In this embodiment, the first water outlet pipe 4 and the second water outlet pipe 6 are arranged vertically downward or obliquely downward relative to the valve body 2 .

When the second water outlet pipe 6 is opened, the first water outlet pipe 4 is in a closed state, and the water in the cylinder is discharged by the second water outlet pipe 6 after passing through the water inlet pipe 1 . After the water in the cylinder is emptied, dehydration begins. During the dehydration process, the second water outlet pipe 6 is always in an open state, so that the high-speed dehydration is convenient, and the water thrown out by the load in the cylinder can be drained away in time.

After the dehydration is finished, the second outlet pipe 6 should be closed before the next rinsing begins to take in water. At this time, some sundries may not be completely flushed away from the drain valve, causing the sundries to be squeezed into the valve body when the valve is closed. The foreign matter 5 in the channel of the drain valve 2 causes the valve plug of the second outlet pipe 6 to not be completely sealed. If the valve plug can not be completely sealed, after the next water intake, the water in the cylinder will continuously flow out from the valve plug and the stuck debris, causing the water level in the cylinder to drop and causing an alarm. If by program at this moment, the control drain valve is opened once again, and the sundry that is extruded to stuck sundry place 5 by valve plug will drop through the water outlet along the second water outlet pipe 6 due to gravity. At this time, the drain valve is closed again, and the valve plug can be completely sealed, and there will be no phenomenon that the valve plug cannot be sealed due to residual debris at the jammed debris.

When the first water outlet pipe 4 is opened and the second water outlet pipe 6 is closed, the above operation is equally effective.

Embodiment five

This embodiment provides a washing machine adopting the above control method for preventing water leakage of the drain valve.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the technology of this patent Without departing from the scope of the technical solution of the present invention, personnel can use the technical content of the above prompts to make some changes or modify them into equivalent embodiments with equivalent changes. In essence, any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the solutions of the present invention.

Claims (11)

1. the control method preventing Drain Valve of Washing Machine from leaking, it is characterised in that described washing machine is before water inlet Or performing guarded drainage valve after draining to leak control program, guarded drainage valve control program of leaking includes that controlling drain valve is closing The step of either on or off action is again performed after closing.

A kind of control method preventing Drain Valve of Washing Machine from leaking the most according to claim 1, it is characterised in that The described guarded drainage valve number of times of drain valve either on or off action in control program that leaks is X, and wherein X is setting of washing machine Definite value, X >=1, preferably X >=2；Or X can be sized according to the stopping state of drain valve.

A kind of control method preventing Drain Valve of Washing Machine from leaking the most according to claim 1, it is characterised in that Described guarded drainage valve control program of leaking also includes that washing machine inflow process opens the step that drain valve carries out washing away.

A kind of control method preventing Drain Valve of Washing Machine from leaking the most according to claim 3, it is characterised in that Described washing machine is opened drain valve after water inlet to certain water level and is washed away；Or washing machine keeps while water inlet Drain valve is opened and is washed away.

A kind of control method preventing Drain Valve of Washing Machine from leaking the most according to claim 3, it is characterised in that Described guarded drainage valve control program of leaking includes:

Step 1) control drain valve closedown；

Step 2) control drain valve execution either on or off action；

Step 3) washing machine execution water inlet process, when reaching designated water level h, stop water inlet process；

Step 4) control drain valve open；

Step 5) when washing machine judges water emptying, control drain valve and close；

Wherein, designated water level h is less than the washing minimum water level of washing machine.

A kind of control method preventing Drain Valve of Washing Machine from leaking the most according to claim 1, it is characterised in that Described guarded drainage valve control program of leaking performed before the washing process of washing machine starts water inlet, or in washing/rinsing Process draining terminates to perform afterwards, or performs before or after dehydration starts.

7. according to a kind of control method preventing Drain Valve of Washing Machine from leaking described in claim 1-6 any one, its It is characterised by, including:

Step 1) open washing machine；

Step 2) washing machine performs guarded drainage valve and leaks control program；

Step 3) control drain valve carry out either on or off action；

Step 4) washing machine judges whether the number of times of drain valve either on or off action reaches X time；

Step 5) if judged result is no, then it is back to step 3), if the determination result is YES, washing machine then starts water inlet, Perform subsequent process.

8. according to a kind of control method preventing Drain Valve of Washing Machine from leaking described in claim 1-6 any one, its It is characterised by, including:

Step 1) start washing machine；

Step 2) washing machine execution washing/rinse cycle；

Step 3) after washing/rinse cycle terminates, control drain valve and open, discharge washings；

Step 4) after washings emptying, control drain valve and close；

Step 5) washing machine performs guarded drainage valve and leaks control program；

Step 6) control drain valve carry out either on or off action；

Step 7) washing machine judges whether the number of times of drain valve either on or off action reaches X time；

Step 8) if judged result is no, then it is back to step 6), if the determination result is YES, then enter dehydration.

9. according to a kind of control method preventing Drain Valve of Washing Machine from leaking described in claim 1-6 any one, its It is characterised by, including:

Step 1) start washing machine；

Step 2) washing machine perform dehydration or drainage procedure；

Step 3) control drain valve open；

Step 4) washing machine judge dehydration or drainage procedure whether terminate；

Step 5) if the determination result is YES, then enter step 6), if judged result is no, then enter step 3)；

Step 6) control drain valve closedown；

Step 7) washing machine performs guarded drainage valve and leaks control program；

Step 8) control drain valve carry out either on or off action；

Step 9) washing machine judges whether the number of times of drain valve either on or off action reaches X time；

Step 10) if judged result is no, then it is back to step 8), if the determination result is YES, then enter rinse cycle Or terminate.

A kind of control method preventing Drain Valve of Washing Machine from leaking the most according to claim 1, it is characterised in that Described drain valve includes valve body (2), and the upper setting of valve body (2) communicates therewith outlet pipe, outlet pipe straight down or Arrange diagonally downward.

11. 1 kinds use the washing machine of control method as described in claim 1-10 any one.