WO2022213915A1

WO2022213915A1 - Residual water draining control method for washing apparatus

Info

Publication number: WO2022213915A1
Application number: PCT/CN2022/084987
Authority: WO
Inventors: 王军立; 徐雯婷; 韩萌; 王召兵
Original assignee: 青岛海尔洗衣机有限公司; 海尔智家股份有限公司
Priority date: 2021-04-06
Filing date: 2022-04-02
Publication date: 2022-10-13
Also published as: CN113279210A

Abstract

A residual water draining control method for a washing apparatus, comprising: when a washing apparatus finishes a washing program and an external water suction pump (4) is removed from an external water tank, opening a water inlet valve (6) and turning on the external water suction pump (4) for a first preset duration; closing the water inlet valve (6) and turning off the external water suction pump (4) for a second preset duration; opening a water draining assembly for a third preset duration; and making the washing apparatus to execute a drying only program to rotate an inner tub (2) for a fourth preset duration. The washing apparatus can completely drain residual water in the external water suction pump (4), a water suction pipe (3), and a water inlet pipe (5) and on an inner wall of an outer tub (1) and inner and outer walls of the inner tub (2) after washing, thereby avoiding the occurrence of residual water deterioration and odorization, effects on next washing of a user, cross infection, and freezing of the water inlet pipe (5), the external water suction pump (4), and the water suction pipe (3) in winter, meeting use requirements of a user, and improving user experience.

Description

Control method of residual water drainage of laundry equipment

technical field

The invention belongs to the technical field of laundry, and specifically provides a method for controlling residual water drainage of laundry equipment.

Background technique

Laundry equipment is a device capable of washing, rinsing, dehydrating and draining clothes. Common laundry equipment includes a pulsator washing machine, a drum washing machine, and an all-in-one washer and dryer.

Taking the pulsator washing machine as an example, some pulsator washing machines have an external suction pump, and the water can be sucked into the outer tub through the suction pump and the suction pipe through the external suction pump. , The external suction pump and the suction pipe connected to the suction pump, the inner and outer walls of the inner barrel and the inner wall of the outer barrel will have residual water. In the high temperature summer, the residual water will deteriorate and stink. Users need to clean the washing machine in time. If the inner and outer barrel walls are moldy, it will also cause cross-infection. In the cold winter, the residual water will freeze, which can freeze the external suction pump and the suction pipe of the pump.

Therefore, there is a need in the art for a new method for controlling residual water drainage of laundry equipment to solve the above problems.

SUMMARY OF THE INVENTION

In order to solve the above problems in the prior art, that is, in order to solve the problem that the existing laundry equipment with an external suction pump has residual water after washing, the present invention provides a method for controlling the drainage of residual water in the laundry equipment. The laundry equipment includes a box, an outer tub arranged in the box, an inner tub rotatably arranged in the outer tub, a suction pipe with an outlet facing the inner tub, an external suction pump connected with the suction pipe, and an outlet. A water inlet pipe facing the inner barrel, a water inlet valve arranged on the water inlet pipe, and a drainage assembly communicated with the outer barrel, the external suction pump is selectively communicated with an external water tank; the residual water drainage control method The method includes: when the laundry device finishes the washing procedure and the external suction pump is taken out from the external water tank, opening the water inlet valve and the external suction pump for a first preset time; Close the water inlet valve and the external suction pump for a second preset time; open the drainage assembly for a third preset time; make the laundry device perform a single off procedure to rotate the inner tub and for a fourth preset time.

In a preferred technical solution of the above-mentioned control method for draining residual water, in a situation where the laundry device ends the washing procedure, the method for controlling residual water draining further includes: issuing a washing end prompt.

In a preferred technical solution of the above-mentioned residual water control method, the step of "sending the end of washing prompt" includes: sending out a sound prompt at intervals.

In a preferred technical solution of the above control method for residual water drainage, while the step of "closing the water inlet valve and the external suction pump for a second preset time", the residual water drainage control method further includes: : Make the digital display tube of the laundry equipment display the residual water discharge code.

In a preferred technical solution of the above-mentioned control method for draining residual water, the washing device is a top-draining pulsator washing machine, and the step of "turning on the drain assembly for a third preset time" specifically includes: making the top-draining pulsator The drain valve of the washing machine is opened for a third preset time; the step of “making the laundry device perform a single-off procedure to make the inner tub rotate for a fourth preset time” specifically includes: making the top-draining pulsator washing machine The drain motor and the dehydration motor are turned on for the fourth preset time.

In a preferred technical solution of the above-mentioned control method for draining residual water, the laundry device is a bottom draining pulsator washing machine, and the step of "opening the draining assembly for a third preset time" specifically includes: making the bottom draining pulsator The drain valve of the washing machine is opened for a third preset time; the step of “making the washing device perform a single-off procedure to make the inner tub rotate for a fourth preset time” specifically includes: making the lower drain pulsator washing machine The dehydration motor turns on for the fourth preset time.

In a preferred technical solution of the above control method for draining residual water, the control panel of the washing machine is provided with a residual water draining function key, and the residual water draining command of the washing machine is selected through the residual water draining function key. input to the laundry device.

In a preferred technical solution of the above control method for residual water drainage, the control panel of the washing machine is not provided with a residual water drainage function key, and the residual water drainage command of the washing machine is selected through the original function key and continues for the first time. Five preset times are input to the laundry device.

In a preferred technical solution of the above control method for residual water drainage, the control panel of the washing machine is not provided with a residual water drainage function key, and the residual water drainage instruction of the washing machine is simultaneously activated by at least two original function keys. The selection is input to the laundry device when at least two original function keys are simultaneously selected for a fifth preset time.

In a preferred technical solution of the above residual water drainage control method, the controller of the laundry device is connected to an intelligent terminal, and the residual water drainage instruction of the laundry device is input to the laundry device through the intelligent terminal.

In the preferred technical solution of the present invention, after the washing machine finishes the washing procedure and the external suction pump of the washing machine is taken out from the external water tank, the water in the water inlet pipe enters the inner tub due to the opening of the water inlet valve, and the external suction pump of the washing machine is taken out from the external water tank. The water in the suction pump itself and the suction pipe also enters the inner bucket because the external suction pump is turned on. After the first preset time, that is, after the water inlet pipe, the external suction pump itself and the residual water in the suction pipe are all drained , close the water inlet valve and the external suction pump for the second preset time, wait for the water in the inner and outer walls of the inner tub and the inner wall of the outer tub to flow to the bottom of the tub, and then open the drain assembly for the third preset time, so that the The water at the bottom of the tub is discharged. After that, the laundry device is made to perform the single-off procedure for a fourth preset time, so that the inner tub rotates to generate air flow, thereby drying the inner and outer walls of the inner tub and the inner wall of the outer tub, so as to clean up all the residual water. . Through such a control method, the laundry equipment can completely drain the residual water in its external suction pump, suction pipe, water inlet pipe, and the inner wall of the outer tub and the inner and outer walls of the inner tub, so as to avoid residual water in these parts. Deterioration and odor, affecting the user's next washing and causing cross-infection, as well as freezing of the water inlet pipe, external suction pump and suction pipe in winter, to meet the user's needs and improve the user experience.

Further, when the washing machine finishes the washing procedure, the user can be reminded to turn off the faucet and take out the external suction pump from the external water tank by issuing a washing end prompt, so as to ensure the smooth progress of the residual water drainage operation and further improve the performance of the washing machine. user experience.

Further, at the same time as the step of "closing the water inlet valve and the external suction pump for the second preset time", the digital display tube of the laundry device displays the residual water discharge code, so that the user can know when the laundry device is in standby at this time. The purpose is to wait for the water on the inner and outer walls of the inner tub and the inner wall of the outer tub to flow to the bottom of the tub, so as to avoid users who mistakenly think that the residual water drainage program has ended and stop the laundry equipment in advance, ensure the complete and smooth progress of the residual water drainage program, and further improve the user experience.

Further, through the separate function key for draining residual water, it is more convenient for the user to operate the draining of residual water, which further improves the user experience.

Further, by selecting the original function key for the fifth preset time, the original control panel can be kept unchanged, avoiding the need to redesign the control panel due to the addition of new function keys, and saving costs.

Further, by simultaneously selecting a plurality of original function keys and continuing for the fifth preset time, on the basis of ensuring that the original control panel remains unchanged, the probability of user misoperation can be further reduced, and it is suitable for some keys with fewer keys. Special models, such as elderly machines, further enhance the user experience.

Further, the controller is connected with the intelligent terminal, and the intelligent terminal can remotely operate the laundry equipment and send residual water drainage instructions to the laundry equipment, thereby further improving the convenience of use by the user.

Description of drawings

Fig. 1 is the structural representation of the laundry device of the present invention;

Fig. 2 is a flow chart of a method for controlling residual water drainage of a laundry device of the present invention.

Detailed ways

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms indicated by the terms "middle", "upper", "lower", "vertical", "inner", "outer", etc. indicate the direction or the positional relationship based on the drawings. The direction or positional relationship shown is only for the convenience of description, rather than indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In addition, it should be noted that, in the description of the present invention, unless otherwise expressly specified and limited, the terms "arrangement" and "connection" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Based on the problem of residual water after washing the existing laundry equipment with an external suction pump pointed out in the background, the present invention provides a method for controlling the residual water drainage of the laundry equipment, aiming at the ability of the laundry equipment to drain itself after washing. The residual water in the external suction pump, suction pipe, water inlet pipe, and the inner wall of the outer barrel and the inner and outer walls of the inner barrel are completely drained, so as to avoid residual water in these parts, which may cause the residual water to deteriorate and stink, which will affect the user’s next washing. Cause cross-infection and freeze the water inlet pipe, external suction pump and suction pipe in winter, meet the needs of users and improve user experience.

Specifically, as shown in FIG. 1 , the laundry device of the present invention includes a box, an outer tub 1 arranged in the box, an inner tub 2 rotatably arranged in the outer tub 1, a water suction pipe 3 with an outlet facing the inner tub 2, and a water suction pipe 3. The connected external suction pump 4, the water inlet pipe 5 with the outlet facing the inner barrel 2, the water inlet valve 6 arranged on the water inlet pipe 5, and the drainage assembly communicated with the outer barrel 1, the external suction pump 4 is selectively connected with the external suction pump 4. The tank is connected. Among them, the external water tank can be a water tank matching the laundry equipment itself, or it can be the user's own water tank at home, and the form of the water tank is not completely limited to the form of the box, as long as it can hold water and when the external suction pump 4 is placed inside it The water in the water tank can be introduced into the inner tub 2 by the action of the external suction pump 4 . It should be noted that, when the laundry device is a pulsator washing machine, the traditional pulsator washing machine is a bottom drain type pulsator washing machine, and the drainage assembly may include a drainage pipe 7 and a drainage valve 8 arranged on the drainage pipe 7. Of course, some users In the home, it may be due to the problem of layout space. For example, the pulsator washing machine is placed in the kitchen, but the floor drain is in the toilet, and the wall between the kitchen and the toilet is not provided with a hole at the bottom. In this case, the pulsator can be installed. The washing machine is transformed into a top-draining type pulsator washing machine, so that the drain pipe 7 has a rising part through the opening of the wall. At this time, a drain pump can be added to the drain assembly, and the drain pump has a drain motor. Of course, in practical applications Among them, the bottom-draining type pulsator washing machine may also have a draining motor to increase the draining speed, and the adjustment or change of the specific structure of the washing machine does not constitute a limitation to the present invention.

As shown in Figure 2, the residual water drainage control method of the present invention comprises:

S1: In the case where the washing machine finishes the washing procedure and the external suction pump 4 is taken out from the external water tank, open the water inlet valve 6 and the external suction pump 4 for the first preset time;

The purpose of step S1 is to open the water inlet valve 6 to discharge the residual water in the water inlet pipe 5 into the inner barrel 2, and the opening of the external suction pump 4 can ensure that the external suction pump 4 itself and the residual water in the suction pipe 3 are also Discharge into the inner barrel 2, and the execution actions of opening the water inlet valve 6 and opening the external suction pump 4 are preferably performed simultaneously. Of course, in other examples, the execution actions of opening the water inlet valve 6 and opening the external suction pump 4 can also be performed sequentially. The adjustment and change of this execution timing does not constitute a limitation to the present invention, and the time for opening the water inlet valve 6 and the external suction pump 4 is guaranteed to last for the first preset time to ensure that the water inlet pipe 5, the external suction pump 4 The residual water in the suction pump 4 and the suction pipe 3 can be completely drained, and the first preset time can be obtained through experiments. For example, the first preset time can be set to 1min. The adjustments and changes do not constitute limitations to the present invention.

S2: close the water inlet valve 6 and the external suction pump 4 for the second preset time;

The purpose of step S2 is to make the water in the inner and outer walls of the inner tub 2 and the inner wall of the outer tub 1 flow to the bottom of the tub by gravity, and the time for closing the water inlet valve 6 and the external suction pump 4 is guaranteed to last for a second preset time to ensure that the inner tub 2 The water on the inner and outer walls and the inner wall of the outer tub 1 can fully flow to the bottom of the tub, and the second preset time can be obtained through experiments. For example, the second preset time can be set to 9 minutes. Adjustments and changes do not constitute limitations to the present invention. In the process of performing step S2, preferably the digital display tube of the laundry device displays the residual water discharge code, for example, the digital display tube displays "Ud" or other prompts for the residual water discharge code, and the laundry device is completely in a static state at this time, That is, the power-on standby state. The advantage of this setting is to prevent the user from mistakenly thinking that the residual water draining program has ended and shutting down the laundry equipment in advance, so as to ensure that the subsequent steps of the residual water draining program can continue to be executed.

S3: turn on the drainage assembly and continue for the third preset time;

The purpose of step S3 is to discharge the residual water at the bottom of the barrel. The residual water at the bottom of the barrel at least includes the residual water in the previous water inlet pipe 5, the external suction pump 4 and the suction pipe 3, and the residual water on the inner wall of the outer barrel 1 and the inner and outer walls of the inner barrel 2. Water, the time for opening the drainage component is guaranteed to last for the third preset time to ensure that the water at the bottom of the bucket is fully drained. The third preset time can be obtained through experiments. For example, the third preset time can be set to 1min. The adjustment and change of the third preset time does not constitute a limitation to the present invention. In this step, the drain valve 8 of the drain assembly may be opened for a third preset time.

S4: Make the laundry device perform a single-off procedure to rotate the inner tub 2 for a fourth preset time.

The purpose of step S4 is to rotate the inner tub 2 by making the laundry equipment perform the single-off procedure, that is, the inner tub 2 rotates relative to the outer tub 1, and air flow will be generated during the rotation of the inner tub 2, so as to facilitate the inspection of the inner and outer walls of the inner tub 2 and the outer tub 1. The inner wall is dried, so that the time for the laundry device to perform the single-off procedure is guaranteed to last for the fourth preset time, which can ensure that the inner and outer walls of the inner tub 2 and the inner wall of the outer tub 1 are fully dried. The fourth preset time can be obtained through experiments. The fourth preset time is set to 15 minutes, and this adjustment and change to the fourth preset time does not constitute a limitation to the present invention. In this step, if the drain assembly has a drain motor, the drain motor is also turned on, and the drain valve 8 is kept open. Residual water can also continue to drain.

After step S4, the inner tub 2 of the laundry device can be in an inertial deceleration state (that is, the dehydration motor is powered off), and when the rotational speed of the inner tub 2 reaches a low rotational speed, a command to close the drain valve 8 and the drain motor is sent, and the inner tub 2 brakes After the shutdown, it can be controlled by detecting the change of the rotation speed of the inner tub 2 or by time. For example, after the dehydration motor is powered off for 55s, the drain valve 8 and the drainage motor are closed, and the inner tub 2 is braked and then shut down.

Preferably, when the laundry device ends the washing procedure, the residual water drainage control method of the present invention further comprises: issuing a washing end prompt. The advantage of this setting is that the user can close the faucet to prevent the water inlet pipe 5 from continuing to inject water into the inner bucket 2 after the subsequent water inlet valve 6 is opened, and the user can also follow the prompts to remove the external suction pump 4 from the external water tank to avoid external After the suction pump 4 is turned on, the suction pipe 3 continues to inject water into the inner tub 2 . In the present invention, the way of issuing the washing end prompt can be a buzzer prompt, that is, the buzzer of the laundry device sends out an alarm prompt, for example, a sound prompt can be issued at intervals through "0.1on-0.05off-0.1on-0.05off" , that is, the prompt tone is alternately turned on for 0.1s and off for 0.05s, and the prompt time can last for 1min to notify the user to deal with it.

In practical applications, the laundry device can automatically execute the residual water draining procedure after being prompted. Of course, it is preferable that the user can choose whether to execute the residual water discharging procedure. In a possible situation, the control panel of the laundry device is provided with a residual water drain function key, and the residual water drain command of the laundry device is input to the laundry device when the residual water drain function key is selected, that is, the user can use the Select the residual water function key to make the washing machine perform the residual water discharge program. In another possible situation, the control panel of the washing machine is not provided with a residual water draining function key, and the residual water draining instruction of the washing machine is input to the washing machine when the original function key is selected and lasts for the fifth preset time. On the device, for example, you can select the residual water drain function by selecting the "Program" function key for more than 5s, and select this function when you hear the "DiDi" prompt tone. Alternatively, the control panel of the washing machine may not be provided with a residual water draining function key, and the residual water draining command of the washing machine may be selected simultaneously through at least two original function keys or through at least two original function keys. When there are function keys selected at the same time and input to the laundry equipment for the fifth preset time, for example, select the residual water drain function by long pressing the "Program" function key and the "Water Volume" function key for more than 3s, and when you hear "Drip". The beeping sound of "di" indicates that this function is selected. Of course, for laundry equipment with IoT functions, for example, the controller of the laundry equipment is connected to a smart terminal (such as a mobile phone, tablet, smart watch or wristband, etc.), and the residual water drainage instruction of the laundry equipment is input to the laundry equipment through the smart terminal. of.

So far, the technical solutions of the present invention have been described with reference to the preferred embodiments shown in the accompanying drawings, however, those skilled in the art can easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

A method for controlling residual water drainage of a laundry device, characterized in that the laundry device comprises a box, an outer tub arranged in the box, an inner tub rotatably arranged in the outer tub, and an outlet facing the inner tub A suction pipe, an external suction pump connected to the suction pipe, a water inlet pipe with an outlet facing the inner barrel, a water inlet valve arranged on the water inlet pipe, and a drainage assembly communicated with the outer barrel. The water pump is selectively communicated with the external water tank;

The method for controlling residual water discharge includes:

In the case that the washing machine finishes the washing procedure and the external suction pump is taken out from the external water tank, turn on the water inlet valve and the external suction pump for a first preset time;

closing the water inlet valve and the external suction pump for a second preset time;

turning on the drainage assembly for a third preset time;

The laundry apparatus is caused to perform a one-off procedure to rotate the inner tub for a fourth preset time.
The method for controlling residual water drainage according to claim 1, characterized in that, in the case that the washing machine ends a washing procedure, the controlling method for residual water drainage further comprises:

The end of washing prompt is issued.
The method for controlling residual water drainage according to claim 2, wherein the step of "sending a reminder of the end of washing" comprises:

Sound prompts at intervals.
The residual water drainage control method according to claim 1, characterized in that at the same time as the step of "closing the water inlet valve and the external suction pump for a second preset time", the residual water draining Control methods also include:

Make the digital display tube of the laundry equipment display the residual water discharge code.
The method for controlling residual water drainage according to claim 1, wherein the washing device is a top-draining pulsator washing machine,

The step of "opening the drainage assembly for a third preset time" specifically includes:

opening the drain valve of the upper drain pulsator washing machine for a third preset time;

The step of "making the laundry device perform a single-off procedure to rotate the inner tub for a fourth preset time" specifically includes:

The drainage motor and the dehydration motor of the top-drainage pulsator washing machine are turned on for a fourth preset time.
The method for controlling residual water drainage according to claim 1, wherein the washing device is a bottom-draining pulsator washing machine,

The step of "opening the drainage assembly for a third preset time" specifically includes:

opening the drain valve of the lower drain pulsator washing machine for a third preset time;

The step of "making the laundry device perform a single-off procedure to rotate the inner tub for a fourth preset time" specifically includes:

The dehydration motor of the lower-drainage top-load washing machine is turned on for a fourth preset time.
The residual water drainage control method according to any one of claims 1 to 6, wherein the control panel of the laundry device is provided with a residual water drainage function key, and the residual water drainage instruction of the laundry device is performed by When the residual water drain function key is selected, it is input to the laundry device.
The residual water drainage control method according to any one of claims 1 to 6, wherein the control panel of the laundry device is not provided with a residual water drainage function key, and the residual water drainage command of the laundry device is It is input to the laundry device when the original function key is selected and lasts for a fifth preset time.
The residual water drainage control method according to any one of claims 1 to 6, wherein the control panel of the laundry device is not provided with a residual water drainage function key, and the residual water drainage command of the laundry device is The input is input to the laundry device when at least two original function keys are simultaneously selected or when at least two original function keys are simultaneously selected for a fifth preset time.
The residual water drainage control method according to any one of claims 1 to 6, wherein the controller of the laundry device is connected to an intelligent terminal, and the residual water drainage instruction of the laundry device is sent through the intelligent terminal input to the laundry device.