WO2020181986A1

WO2020181986A1 - Drainage sealing device, and front-loading washing machine and control method therefor

Info

Publication number: WO2020181986A1
Application number: PCT/CN2020/076541
Authority: WO
Inventors: 吕佩师; 许升; 赵志强
Original assignee: 青岛海尔滚筒洗衣机有限公司; 海尔智家股份有限公司
Priority date: 2019-03-13
Filing date: 2020-02-25
Publication date: 2020-09-17
Also published as: CN111764115A; JP2022525171A; CN111764115B

Abstract

Provided is a drainage sealing device, and a front-loading washing machine and a control method therefor. The front-loading washing machine comprises an inner drum configured to independently contain washing water during laundry washing, wherein a drainage port is provided in the inner drum. The drainage sealing device comprises: a centrifugal component configured to move under the action of a centrifugal force of rotation of the inner drum; and a blocking component configured to block the drainage port, wherein the centrifugal component is connected to the blocking component, and the centrifugal component creates a centrifugal motion to drive the blocking component to open the drainage port.

Description

Drainage sealing device, drum washing machine and control method

This disclosure claims the priority of the Chinese patent application filed with the Chinese Patent Office with application number 201910190613.9 on March 13, 2019. The entire content of the above application is incorporated into this disclosure by reference.

Technical field

This application relates to the technical field of laundry equipment, for example, to a drainage sealing device of a drum washing machine, a drum washing machine and a control method.

Background technique

As the most widely used household appliance in people's daily life, washing machine helps people get rid of the trouble of laundry and brings great convenience to people. However, washing machines also have certain shortcomings, such as longer time-consuming and larger water consumption. With the development of society, water resources are becoming more and more important as an important natural resource, and people’s awareness of water saving also changes. Therefore, how to realize the water-saving function of the washing machine becomes particularly important.

In order to solve the water-saving problem of washing machines, some patents have been proposed in related technologies. For example, the patent number is 201410215346.3, which is a Chinese invention patent of a drum washing machine. The invention relates to a drum washing machine, including a cabinet with a cabinet. The inner tube and the outer tube are provided with a door seal between the outer tube and the box body, and the inner tube is connected with the driving device. The inner tube is a non-porous inner tube, and the inner tube has a small diameter at the bottom of the tube and a tube mouth. The mouth of the inner cylinder is curved inwardly. The door seal is provided with a water inlet pipe. One end of the water inlet pipe is connected with the washing water rapid heating device, and the other of the water inlet pipe One end penetrates the door seal and extends into the inner cylinder, and the outer cylinder is provided with a drainage port and a water pressure detection device. It can be seen from the above technical solution that the inner cylinder of the present invention is a non-porous inner cylinder. Water can be fed into the inner cylinder through the water inlet pipe provided on the door seal, and water can be discharged during the dehydration process through the shape of the inner cylinder, which can avoid Water is stored between the inner and outer cylinders, which greatly saves washing water consumption.

The above invention provides a drum washing machine with a non-porous inner tub, but the above invention only designs the drum washing machine in the related art into a non-porous structure, which has little practical significance. Because laundry must be soaked in a certain amount of washing water, if the soaking effect is to be achieved, a certain amount of water needs to be stored in the non-porous inner cylinder, which will increase the burden on the motor and cause problems such as power consumption. In addition, the drum washing machine disclosed in the patent uses a door seal. Since the main function of the door seal is to seal the opening of the outer drum of the washing machine, setting a water inlet duct on the door seal easily affects the sealing effect of the door seal. It is realized, and the patent cannot realize the detection of the water inlet level in the inner cylinder.

In addition, for drum washing machines with a non-porous inner tub, keeping the drain port on the inner tub sealed is the key to achieving no water between the inner tub and the outer tub. The related technology has a seal on the drain port, and the The sealing element is a solution to seal the contact with the drain outlet, but since the wall of the inner cylinder is generally arc-shaped, it is more complicated to install the seal on the arc-shaped inner cylinder wall, and it is not easy to maintain a stable, easy to fall off, and cause movement The parts cannot block the drain outlet, resulting in dripping and leakage.

Summary of the invention

The first aspect of this application provides a sealed drainage device, which adopts the following technical solutions:

A sealed drainage device is suitable for a drum washing machine. The drum washing machine includes an inner tub configured to independently contain washing water when washing clothes, the inner tub is provided with a drainage port, and the sealed drainage device includes:

The centrifugal component is configured to move under the centrifugal force of the rotation of the inner cylinder;

The blocking component is configured to block the drain;

The centrifugal component is connected with the blocking component, and the centrifugal movement of the centrifugal component drives the blocking component to open the drain.

The second aspect of the application provides a drum washing machine, which adopts the following technical solutions:

A drum washing machine, including:

The inner tube is configured to hold washing water independently when washing clothes;

A drainage port is opened on the inner cylinder and used for draining washing water;

The sealed drainage device is the sealed drainage device provided in the first aspect of the application, the sealed drainage device is installed on the inner wall of the inner cylinder, and the centrifugal component moves centrifugal under the action of the centrifugal force of the inner cylinder rotating Drive the blocking component to open the drain.

The third aspect of the application provides a control method of a drum washing machine, which adopts the following technical solutions:

A control method of the drum washing machine includes:

In the process of at least one of the drainage and dehydration of the drum washing machine, the rotation speed V of the inner drum is controlled to satisfy V≥V0, and the centrifugal component moves under the centrifugal force of the rotation of the inner drum to drive the blocking component to open the Drain

Wherein, the V0 is a set value.

Description of the drawings

Fig. 1 is a schematic diagram of the principle of a drum washing machine in an embodiment of the present application;

Figure 2 is a schematic diagram of the principle of a drum washing machine in the second embodiment of the present application (Embodiment 1);

Figure 3 is a schematic diagram of the principle of a drum washing machine in the second embodiment of the present application (second embodiment);

Fig. 4 is a schematic diagram of the principle of the drum washing machine in the second embodiment of the present application (the third embodiment);

FIG. 5 is a schematic diagram of the principle of a drum washing machine in Embodiment 3 of the present application;

Figure 6 is a partial enlarged view of Figure 5 (pressure relief state) of the drum washing machine in the third embodiment of the application;

Fig. 7 is a partial enlarged view of Fig. 5 (pressurized state) of the drum washing machine in the third embodiment of the present application;

Fig. 8 is a schematic diagram of the principle of a drum washing machine in the fourth embodiment of the present application;

Fig. 9 is a partial enlarged view in Fig. 8 of the fourth drum washing machine in the embodiment of the present application (pressure relief state in the first embodiment);

Fig. 10 is a partial enlarged view of Fig. 8 of the fourth drum washing machine in the embodiment of the present application (pressurization state in the first embodiment);

Fig. 11 is a partial enlarged view in Fig. 8 of the fourth drum washing machine of the embodiment of the present application (pressure relief state in the second embodiment);

Fig. 12 is a partial enlarged view in Fig. 8 of the fourth drum washing machine of the embodiment of the present application (pressurization state in the second embodiment);

FIG. 13 is a schematic diagram of the principle of the five to nine drum washing machines of the present application;

Fig. 14 is a schematic diagram of the working principle of the sealed drainage device installed on the drum washing machine in the fifth and sixth embodiments of the present application;

Fig. 15 is a partial enlarged view of Fig. 14 of the fifth and sixth sealed drainage devices of the present application;

Fig. 16 is a partial enlarged view of another embodiment of Fig. 14 of the fifth and sixth sealed drainage devices of the present application;

Figure 17 is an exploded view of the sealed drainage device of the fifth and sixth embodiments of this application;

18 is a schematic diagram of the working principle of the sealing drainage device installed on the drum washing machine in the seventh embodiment of the present application;

FIG. 19 is a partial enlarged view of FIG. 18 of the sealed drainage device of the seventh embodiment of the present application;

Fig. 20 is a partial enlarged view of another embodiment of Fig. 18 of the seventh embodiment of the present application;

Figure 21 is an assembly diagram of the sealing drainage device and the lifting rib of the drum washing machine in the seventh embodiment of the present application;

Figure 22 is a schematic diagram of the structure of the inner cylinder of the drum washing machine, the sealing drainage device, and the washing machine lifting ribs in the seventh embodiment of the application;

Figure 23 is a schematic diagram of the working principle of the eighth embodiment of the present application where the sealed drainage device is installed on the drum washing machine;

FIG. 24 is a schematic diagram of the working principle of another embodiment in which the sealed drainage device of the eighth embodiment of the present application is installed on the drum washing machine;

Figure 25 is a partial enlarged view of Figures 23 and 24 of the eighth sealed drainage device of the present application;

FIG. 26 is a schematic diagram of the working principle of the sealing drainage device installed on the drum washing machine in the ninth embodiment of the present application;

Fig. 27 is a partial enlarged view of Fig. 26 of the ninth embodiment of the present application.

detailed description

The drainage sealing device, the drum washing machine and the control method of the drum washing machine of the present application will be described below with reference to the accompanying drawings:

As shown in Figures 1 to 27, this embodiment provides a front-opening drum washing machine with a non-porous inner tub. The structure is simple and can greatly reduce the need for filling washing/rinsing water between the inner tub and the outer tub. The washing water consumption of the washing machine. The possibility of dirt adhesion between the inner cylinder and the outer cylinder is avoided. Greatly improve user health and user experience, and greatly save water resources.

The drum washing machine of this embodiment has a housing 19, which includes: an upper panel 2, a front panel, a back panel and a bottom plate. A foot 9 is fixed on the bottom plate to support the entire washing machine. The housing 19 has an outer cylinder 18 inside, and an inner cylinder 17 is coaxially arranged in the outer cylinder 18. The outer cylinder 18 can collect the drainage from the inner cylinder 17 and the drainage from the high-speed centrifugal dehydration of the inner cylinder 17. The inner cylinder 17 rotates, and optionally, a lifting rib 43 is provided to continuously lift and drop the clothes to wash the clothes. The inner cylinder 17 has a non-porous structure. The outer cylinder 18 has a central mounting hole, and the bearing 12 is installed and fixed. The inner cylinder shaft 13 tightly connected to the inner cylinder 17 passes through the bearing 12 shown and is connected to the drive motor 16. An openable/closable inner cylinder door 6 is installed on the front mouth of the inner cylinder 17, thereby realizing the inner cylinder 17 as a sealed cabin structure.

A door 5 that can be opened/closed is installed on the housing 19 of this embodiment.

Example one:

This embodiment can solve the problem of how to accurately determine the amount of water in the non-porous inner drum drum washing machine. The solution is as follows:

A drum washing machine, comprising an inner tub 17 and a water inlet pipe connected to the inner tub 17. The inner tub 17 is a non-porous inner tub for containing washing water when washing clothes, and the water inlet pipe is provided with Flow sensor 1 for detecting the inflow water flow.

In this embodiment, a flow sensor 1 is installed on the water inlet pipe to monitor the flow rate when the water enters. When the set water inlet amount is reached, the water inlet valve 20 is closed to complete the water inlet. In this embodiment, the flow sensor is used to solve the water inflow problem of the non-porous inner drum washing machine according to the set water level, ensuring the washing effect, simple structure, and convenient operation.

The drum washing machine of this embodiment includes a water inlet valve 20 and a detergent box 3. The water inlet pipe includes a first water inlet pipe and a second water inlet pipe. The outlet end of the water inlet valve 20 is connected to the detergent through the first water inlet pipe. In the box 3, the outlet end of the detergent box 3 is connected to the inner cylinder 17 through a second water inlet pipe, and the flow sensor 1 is arranged on the first water inlet pipe or the second water inlet pipe.

Optionally, the flow sensor 1 is arranged on the first water inlet pipe, so that the detergent in the detergent box can be placed into the flow sensor 1.

The drum washing machine of this embodiment includes a main controller 4, and the flow sensor 1 and the main controller 4 are electrically connected through a line. The main controller 4 can collect the water inflow of the inner cylinder 17 in real time to reach the set water inflow, and close the water inlet valve 20.

As an implementation of this embodiment, the flow sensor 1 is a rotor flow sensor, or a turbine flow sensor, or an ultrasonic flow sensor, or an electromagnetic flow sensor, or an orifice flow sensor.

The flow sensor 1 can be installed at any position on the water inlet pipeline of this embodiment, and optionally it is installed at the back of the water inlet valve 20 to accurately measure the water flow into the sealed inner cylinder 17. The flow sensor 1 is connected to the main controller. 4. The main controller 4 can collect the water inflow of the inner cylinder 17 in real time to reach the set water inflow and close the water inlet valve 20.

In order to realize the inflow of water into the non-porous inner drum of this embodiment, the drum washing machine of this embodiment includes a drive motor 16 and an inner drum shaft 13. The drive motor 16 drives the inner drum through a transmission connection between the inner drum shaft 13 and the inner drum 17. The barrel 17 rotates, the inner barrel shaft 13 has a hollow channel 14 communicating with the inside of the inner barrel 17, and the water inlet pipe communicates with the hollow channel of the inner barrel shaft 13.

In some embodiments, the inner cylinder shaft 13 is connected to a driving motor 16. The driving motor 16 includes a stator and a rotor, and the rotor is fixedly connected to the inner cylinder shaft 13; a through hole is provided at the center of the rotor, and the water inlet pipe The passage through the through hole of the rotor communicates with the hollow passage 14 of the inner cylinder shaft 13.

In some embodiments, a first dynamic sealing structure 15 is provided between the water inlet pipe and the through hole of the rotor, and a second sealing structure is provided between the through hole of the rotor and the hollow passage 14 of the inner cylinder shaft 13.

In order to achieve drainage of the non-porous inner tub, the drum washing machine of this embodiment includes an outer tub 18, an inner tub drain hole is provided on the side wall of the inner tub 17, and a normally closed one-way valve plug 11 is installed on the inner tub drain hole. The said outer cylinder 18 is provided with a jack mechanism 10 for pushing the one-way valve plug 11 to drain water.

Optionally, the outer cylinder 18 is also provided with a locking mechanism for locking the inner cylinder 17 from rotating. After the inner cylinder is locked by the locking mechanism, the jack mechanism 10 pushes the one-way valve plug 11 open for drainage.

In order to achieve dehydration of the non-porous inner cylinder, a plurality of dehydration holes are opened on the side wall of the inner cylinder 17 in this embodiment, and centrifugal valves are installed on the dehydration holes. The centrifugal valves are opened under the action of the centrifugal force of the dehydration to perform dehydration. drain.

This embodiment also provides a method for controlling the drum washing machine. The washing machine executes the washing/rinsing procedure. During the water intake process, the flow sensor detects the water intake flow value in real time. The washing machine calculates the water intake according to the water intake flow value and the water intake time. , When the water inflow reaches the set water inflow of the washing machine, stop the water inflow.

The drum washing machine is provided with multiple inlet water flow values that can be selected by the user, and the washing machine performs water inlet according to the inlet water flow value selected by the user.

The drum washing machine has a laundry weighing function, which can determine the flow value of the inlet water according to the weight of the laundry.

Embodiment two:

As shown in Figures 2 to 4, a drum washing machine of this embodiment includes an inner tube 17 and a water inlet pipe. The inner tube is a non-porous inner tube, which holds washing water when washing clothes, and also includes For a water measuring device that measures the amount of water inflow, the water inlet pipeline is connected to the water measuring device, and the water measuring device is connected to the inner cylinder.

The drum washing machine of this embodiment is provided with a water measuring device, which enters the water measuring device for quantitative measurement before water is poured into the inner tub 1, and determines the number of times the water measuring device measures water according to the set water level, thereby solving The non-porous inner drum drum washing machine ensures the washing effect according to the water inlet problem of the set water level, and has a simple structure and convenient operation.

The water measuring device in this embodiment includes a water measuring tank 21. The water measuring tank 21 has a water inlet and a water outlet. The water inlet is connected to the water inlet pipe, and the water outlet is connected to the inner cylinder 17; the water outlet is provided with equivalent water When the water volume in the water tank 21 reaches a set value, a water outlet control device that controls the opening of the water outlet.

As an implementation of this embodiment, as shown in FIG. 2, the water measuring tank 21 is provided at the bottom of the inner cylinder 17, and the water measuring device includes a water level detecting device 22 for detecting the water measuring tank 21, The water outlet control device is a water tank drain pump 23, and the water tank drain pump 23 starts the water tank drain pump 23 when the water level detection device 22 detects that the water level in the water measuring tank 21 reaches a set value. The water is pumped into the inner cylinder 17.

As an implementation of this embodiment, as shown in FIG. 3, the water measuring tank 21 is arranged on the upper part of the inner cylinder 17, and the water measuring device includes a water level detecting device 22 for detecting the water measuring tank. The water outlet control device is a water tank drain valve 25. The water tank drain valve 25 opens when the water level detection device 22 detects that the water level in the water measuring tank 21 reaches a set value, and discharges the water in the water measuring tank 21 into the inner cylinder. .

The water level detection device 22 in this embodiment is a liquid level sensor. The liquid level sensor includes an air chamber and a sensor unit, and the air chamber is connected to a water measuring tank. Alternatively, the water level detection device 22 includes a plurality of water level detection probes arranged in the water measuring tank and arranged along the depth direction thereof.

As an implementation of this embodiment, the water measuring tank 21 is arranged on the upper part of the inner cylinder 17, the water outlet is arranged on the bottom wall of the water measuring tank 21, and the water outlet control device is to keep the water outlet normally closed. The water tank check valve, when the water volume in the water tank reaches a certain value, the water tank check valve opens under water pressure gravity, and the water in the water measuring tank 21 is discharged into the inner cylinder 17, and the water tank check valve resets to keep the water outlet closed .

The water measuring tank 21 described in this embodiment is provided with an overflow hole 24, and the overflow hole 24 is connected to an overflow pipe for leading out the overflowing water in the water measuring tank.

Optionally, the drum washing machine includes a drain pipe 8, and the overflow pipe is connected to the drain pipe 8.

As an implementation of this embodiment, as shown in FIG. 4, the water measuring device includes a heating device 26 arranged in the water measuring tank 21 and a water temperature detecting device for detecting the water temperature in the water measuring tank.

This embodiment also provides a method for controlling the drum washing machine. The washing machine executes the washing/rinsing process, and the washing machine controls the washing water to enter the water metering tank. When the water volume in the equivalent water tank reaches the set value, the water supply is stopped and the metering All the water in the water tank is discharged into the inner cylinder, and the water is started again to enter the water measuring tank, and the cycle is repeated until the water level in the inner cylinder reaches the set value, and the water inflow is ended.

In some embodiments, the washing machine controls the washing water to enter the water metering tank. When the water volume in the water metering tank reaches the set value, it stops the water intake and controls the heating device to run to heat the washing water. When the water temperature detection device detects the water metering tank When the water temperature reaches the set value, all the water in the water measuring tank is discharged into the inner cylinder.

Example three:

This embodiment can solve the problem of how the non-porous inner drum drum washing machine can ensure the unbalanced air pressure in the sealed compartment. For example, it can solve the sudden water cut of the solenoid valve, especially the water cut of the tap water pipe network, forming a negative pressure and sealing the washing water in the compartment. Backwash to the pipe network; or there is gas inside, and it is difficult to enter water.

As shown in Figures 5-7, a drum washing machine of this embodiment includes an inner tube 17, which is a non-porous inner tube, which contains washing water when washing clothes, and also includes an inner tube 17 for connecting the inner tube 17 with the outside world. The air pressure balance mechanism that balances the air pressure inside the inner cylinder.

When water enters, the gas in the sealed compartment of the inner cylinder can overflow through the equalizing mechanism under pressure to ensure air pressure balance.

When the water is suddenly cut off, the outside atmosphere can quickly enter the airtight compartment of the inner cylinder, and destroy the back suction, ensure the air pressure balance, and prevent the washing water from being sucked into the tap water pipe network.

In other cases, such as dehydration, the air pressure balance mechanism can also ensure the air pressure balance of the inner cylinder.

As an implementation of this embodiment, the air pressure balancing mechanism includes a pressure equalizing channel 27 provided on the inner cylinder 17, and one end of the pressure equalizing channel 27 connected to the inner cylinder 17 is provided on the inner cylinder 17 close to rotating The position of the central axis is always higher than the highest water level in the inner cylinder 17.

The drum washing machine of this embodiment includes a driving motor 16 and an inner drum shaft 13. The driving motor 16 drives the inner drum 17 to rotate through a transmission connection between the inner drum shaft 13 and the inner drum 17, and the pressure equalizing channel 27 is opened in the inner drum. The shaft 13 communicates the inside of the inner cylinder 17 with the external environment, and the highest water level in the inner cylinder 17 is lower than the inner cylinder shaft 13. In this way, the water in the inner cylinder can be prevented from flowing out of the pressure equalizing channel.

The drum washing machine of this embodiment includes an outer tub 18. The inner tub 17 is arranged inside the outer tub 18. The water discharged from the inner tub 17 is discharged through the outer tub 18. The mouth of the inner tub 17 is installed to close the inner tub. In the cylinder door 6, the cylinder mouth of the outer cylinder 18 is open, one end of the pressure equalization channel 27 is connected to the inside of the inner cylinder 17, and the other end is arranged inside the outer cylinder 18 to communicate with it. In this way, to prevent extreme situations, the water from the hole can also be collected in the outer cylinder 18.

In this embodiment, the inner cylinder 17 has an inner cylinder drain hole, a normally closed one-way valve plug 11 is installed on the inner cylinder drain hole, and the outer cylinder 18 is installed to top the one-way valve plug 11 Open the ejector mechanism 10 for draining water.

Optionally, the outer cylinder 18 is also provided with a locking mechanism for locking the rotation of the inner cylinder. After the locking mechanism locks the inner cylinder, the ejector mechanism pushes the one-way valve plug to drain water.

The drum washing machine of this embodiment includes a water inlet pipe, the inner drum shaft 13 has a hollow channel 14 communicating with the inside of the inner drum 17, and the water inlet pipe communicates with the hollow passage 14 of the inner drum shaft 13; The pressure equalizing channel 27 and the hollow channel 14 respectively communicate with the interior of the inner cylinder 17 and are separated from each other. In this way, it can be ensured that the gas in the sealed compartment of the inner cylinder can be smoothly discharged to maintain the pressure balance inside the inner cylinder, and at the same time, it is prevented that the influent water is directly discharged through the pressure equalizing channel 27 and leaks.

In some embodiments, the hollow passage 27 extends from one end to the other end along the central axis of the inner cylinder shaft, and the pressure equalization passage includes a first passage section and a second passage section. The first passage section and the hollow passage They are arranged in parallel, one end of which is connected to the inside of the inner cylinder, one end of the second channel section is connected to the first channel section, and the other end extends to the outer circumference of the inner cylinder shaft and communicates with the inside of the outer cylinder.

Optionally, the second channel section is perpendicular to the first channel section to form an L-shaped pressure equalizing channel.

In some embodiments, the inner cylinder shaft 13 is connected to a driving motor 16. The driving motor 16 includes a stator and a rotor, and the rotor is fixedly connected to the inner cylinder shaft; a through hole is provided at the center of the rotor, and the water inlet pipe The through hole passing through the rotor is communicated with the hollow passage of the inner cylinder shaft.

Optionally, a first dynamic sealing structure is provided between the water inlet pipe and the through hole of the rotor, and a second sealing structure is provided between the through hole of the rotor and the hollow passage of the inner cylinder shaft.

In the drum washing machine in this embodiment, a plurality of dehydration holes are opened on the side wall of the inner tub 17, and centrifugal valves are installed on the dehydration holes, and the centrifugal valves are opened under the action of the dehydration centrifugal force to perform dehydration and drainage.

Embodiment four:

This embodiment solves the problem of how the non-porous inner drum drum washing machine can ensure the unbalanced air pressure in the sealed compartment. For example, it can solve the sudden water cut of the solenoid valve, especially the water pipe network cut off, forming a negative pressure, and returning the washing water in the sealed compartment Wash to the pipe network; or there is gas inside and difficult to enter water.

As shown in Figures 8-12, the drum washing machine of this embodiment includes an inner tube 17, which is a non-porous inner tube, which contains washing water when washing clothes, and also includes a tube for connecting the inner tube with the external environment. A pressure-increasing mechanism and/or a pressure-releasing mechanism to balance the air pressure inside the inner cylinder 17.

The pressurizing mechanism described in this embodiment includes a pressurizing port 28 and a negative pressure safety valve 29. The negative pressure safety valve 29 is provided on the pressurizing port 28 and is used when the internal pressure of the inner cylinder 17 is lower than the atmospheric pressure of the external environment. Guided through the pressurizing channel 28, the ambient air enters the inner cylinder 17 through the pressurizing channel 28 to be pressurized until the internal air pressure of the inner cylinder 17 is balanced with the ambient air pressure, and the negative pressure safety valve 29 is closed.

The pressure relief mechanism described in this embodiment includes a pressure relief port 30 and a positive pressure safety valve 31. The pressure relief port 30 is arranged on the inner cylinder 17 at a position close to the central axis of rotation and is always higher than the highest in the inner cylinder 17. For the water level position, the positive pressure safety valve 31 is set on the pressure relief port 30, and is used to release the pressure through the one-way pressure relief port 30 when the internal pressure of the inner cylinder 17 is greater than the atmospheric pressure of the outside environment, until the internal pressure of the inner cylinder 17 and the outside The ambient air pressure is balanced, and the positive pressure safety valve 31 is closed.

As shown in Figure 9, when water enters, the gas in the sealed compartment of the inner cylinder 17 is pressurized. Once it is greater than the set value of the positive pressure safety valve, the positive pressure safety valve opens, which can overflow through the pressure relief port to ensure air pressure balance .

As shown in Figure 10, when the water is suddenly cut off, the gas in the sealed compartment of the inner cylinder 17 is pressurized. Once it is less than the setting value of the positive pressure safety valve, the external atmosphere can quickly enter the sealed compartment and destroy the back suction to ensure air pressure balance. Avoid washing water being sucked into the tap water pipe network.

The drum washing machine of this embodiment includes a driving motor 16 and an inner drum shaft 13. The driving motor 16 drives the inner drum 17 to rotate through a transmission connection between the inner drum shaft 13 and the inner drum 17, and the pressurization channel 28 and/or drain The pressure channel 30 is opened on the inner cylinder shaft 13 to communicate the inside of the inner cylinder 17 with the external environment, and the highest water level in the inner cylinder 17 is lower than the inner cylinder shaft 13.

The drum washing machine of this embodiment includes an outer tub 18, the inner tub 17 is arranged inside the outer tub 18, the water discharged from the inner tub 17 is discharged through the outer tub 18, and an inner tub that closes the inner tub is installed at the mouth of the inner tub 17 Door 6, the cylinder mouth of the outer cylinder 18 is open, one end of the pressure-increasing channel 28 and/or the pressure-relief channel 30 communicates with the inner cylinder 17, and the other end is arranged inside the outer cylinder 18 to communicate with it.

The drum washing machine of this embodiment includes a water inlet pipe, the inner barrel shaft 13 has a hollow channel 14 communicating with the inner barrel 17, and the water inlet pipe communicates with the hollow channel 14 of the inner barrel shaft 13; The pressure relief channel 30 and the hollow channel 14 are respectively communicated with the inner cylinder 17 and are separated from each other.

As shown in Figures 9 and 10, the hollow passage 14 extends from one end to the other along the central axis direction of the inner cylinder shaft 13. The pressure relief port 30 includes a first port section and a second port section. The channel section is arranged in parallel with the hollow channel, one end of which is connected to the inner cylinder, one end of the second channel section is connected to the first channel section, and the other end extends to the outer circumference of the inner cylinder shaft and communicates with the inside of the outer cylinder;

Optionally, the second tunnel section is perpendicular to the first tunnel section to form an L-shaped pressure relief tunnel.

The drum washing machine of this embodiment includes a water inlet pipe, the inner barrel shaft 13 has a hollow channel 14 communicating with the inner barrel 17, and the water inlet pipe communicates with the hollow channel 14 of the inner barrel shaft 13; The pressurizing port 28 is communicated with the hollow passage 14.

In some embodiments, the hollow passage 14 extends from one end to the other along the central axis of the inner cylinder shaft 13, one end of the pressurizing channel 28 is connected to the hollow passage 14, and the other end extends to the inner cylinder shaft. The inner cylinder wall of the outer circumference of 13 communicates with the inside of the outer cylinder 18.

Optionally, the pressurizing channel 28 and the hollow channel 14 are arranged perpendicular to each other.

In this embodiment, the inner cylinder shaft is connected to a drive motor, the drive motor includes a stator and a rotor, and the rotor is fixedly connected to the inner cylinder shaft; a through hole is provided at the center of the rotor, and the water inlet pipe passes through the through hole of the rotor It communicates with the hollow channel of the inner cylinder shaft.

As shown in Figures 11 and 12, the pressure-increasing channel 28 and the pressure-relief channel 30 are both arranged on the inner cylinder shaft 13, and the openings that communicate with the atmosphere are all inside the outer cylinder 18; the openings of the sealed compartments that communicate with the inner cylinder 17 are all in the inner cylinder The shaft 13 is inside the water inlet channel 14.

It can be imagined that the optional pressurization channel 28 and the pressure relief channel 30 are both arranged on the inner cylinder shaft 13, and the openings for communicating with the atmosphere are all inside the outer cylinder 18; the openings of the sealed cabins of the communicating inner cylinder 17 are all inside the sealed cabins .

Embodiment five:

As shown in Figures 13-27, the drum washing machine of this embodiment includes an inner tube 17 that independently holds washing water when washing clothes. The inner tube 17 adopts a non-porous inner tube design, and the inside is a closed chamber with vents during washing. , The washing machine can hold the washing water independently during washing and rinsing. There is no water between the inner tube and the outer tube, so as to achieve the purpose of saving water, while avoiding the formation of dirt between the inner tube and the outer tube, keeping the tube wall clean and improving User experience; the inner tub 17 of the washing machine is provided with a drainage port 39, which drains water during the drainage and/or dehydration process. This embodiment discloses a sealed drainage device suitable for the above-mentioned drum washing machine, including:

The centrifugal component moves under the centrifugal force of the rotation of the inner cylinder 17;

A plugging component for plugging the drain;

The sealed drainage device provided in this embodiment uses the centrifugal force of the inner cylinder 17 to drive the centrifugal component to perform centrifugal movement, and the centrifugal component drives the blocking component to move to open the drainage port, thereby realizing drainage: in principle, using the working characteristics of the drum washing machine, through the design Drainage can be realized by fixing the rotating speed of the inner cylinder, which is easy to realize; in terms of structure, the blocking part is opened by the centrifugal movement of the centrifugal part to realize drainage, and the structure is simple. Therefore, the sealed drainage device of the present application aims at keeping the drain port closed during washing and rinsing of a drum washing machine with a non-porous inner tub to realize independent water storage in the non-porous inner tub, and realizes centrifugation by controlling the rotation speed of the inner tub during drainage and/or dehydration. Drainage realizes the sealing and drainage problems of drum washing machines with non-porous inner tubs.

As an implementation of this embodiment, the centrifugal component and the plugging component described in this embodiment can both reciprocate along the radial direction of the inner cylinder 17, and the plugging component is driven by the centrifugal component and interacts with the centrifugal component. The direction of centrifugal movement is the same or opposite.

Considering that the blocking component and the centrifugal component need more installation controls to move in the same direction, optionally, the centrifugal component moves along the radial direction of the inner cylinder and away from the central axis of the inner cylinder under the action of the centrifugal force of the inner cylinder rotation, so The plugging component is driven by the centrifugal component to move in the radial direction of the inner cylinder and close to the central axis of the inner cylinder, so that the movement of the plugging component and the centrifugal component in the radial direction of the inner cylinder coincide with each other, reducing the two The total movement stroke along the radial direction of the inner cylinder reduces the installation space.

The blocking component in this embodiment includes a blocking member and an elastic member 43. The elastic member 43 acts on the blocking member to maintain the blocking member to seal and block the drain port 39. The centrifugal member is connected to the blocking member, The centrifugal movement of the centrifugal component drives the movement of the blocking member to open the drain.

The elastic member 43 of this embodiment generates an elastic pre-tightening force on the blocking member to keep the blocking member blocking the drainage port and keeping the inner cylinder closed to contain the washing water.

In order to achieve the sealing between the plugging component and the drain, this embodiment can be implemented in the following manner:

In the first way, the plugging component and the drain port 39 are in direct sealing contact to block the drain port 39, for example, the plugging component and the drain port 39 are directly electromagnetically sealed or rigidly sealed.

In the second mode, the sealing member 40 makes a sealing contact with the drain port 39 to block the drain port 39, and the drain port 39 is sealed by the seal member 40, which is low in cost, simple and effective.

In some embodiments, the plugging component has a sealing protrusion for circumferential contact sealing, and the sealing protrusion maintains sealing contact with the outer peripheral inner cylinder wall or the inner wall of the drain port to seal the drain port. The sealing protrusion of this embodiment can be directly arranged on the plugging component, so that the plugging component directly seals the drain port 39.

And/or, the inner wall of the drain port 39 and/or the outer peripheral inner cylinder wall has a sealing protrusion for circumferential contact and sealing, and the sealing ribs maintain sealing contact with the blocking member to block the drain port.

And/or, the sealing member 40 has a sealing protrusion 41 for circumferential contact sealing, and the sealing protrusion 41 is in sealing contact with the blocking member and/or the drain port 39 to seal the drain port.

The sealing protrusion of this embodiment may be formed by a sealing rib formed by the sealing member and/or the inner wall of the drain port 39 and/or the outer circumference of the drain port 39 and/or the sealing member 40 partially protruding, or the sealing protrusion of this embodiment The part may be a protruding part formed by the blocking member and/or the inner wall of the drain port 39 and/or the inner cylinder wall of the outer circumference of the drain port 39 and/or the sealing member 40.

The sealed drainage device of this embodiment includes a housing 44 with a guide channel inside. The blocking member includes a reciprocating guide part 35 arranged in the guide channel, and a guide part 35 arranged at one end of the guide part 35 for blocking drainage. The plugging portion 36 of the mouth and the connecting portion 34 provided at the other end of the guide portion for connecting the centrifugal component; the elastic member 43 is installed in the housing 44, one end is stopped on the housing 44, and the other end is stopped On the blocking piece.

The elastic member of this embodiment is a compression spring, and the compression spring is sleeved on the guide portion 35. Optionally, the housing 44 also has an accommodation groove for accommodating the compression spring. The accommodation groove is sleeved on the periphery of the guide channel to compress One end of the spring is stopped in the accommodating groove, and the other end is stopped in the blocking part.

The guiding portion 35 in this embodiment is a guiding cylinder, the blocking portion 36 is a blocking plug formed by circumferentially extending one end of the guiding cylinder, and the connecting portion 34 is a connecting shaft provided at the other end of the guiding cylinder.

The centrifugal component described in this embodiment includes a counterweight 38 and a connecting piece 37. One end of the connecting piece 37 is connected to the counterweight 38, and the other end is connected to the blocking component. The middle of the connecting piece 37 has a rotatably mounted on the shaft. Rotating shaft hole 42.

Optionally, the counterweight 36 and the connecting member 37 are integrally formed.

The other end of the connecting member 37 in this embodiment has a connecting shaft hole 46 for a connecting shaft of the blocking member, and the connecting shaft is rotatably installed in the connecting shaft hole 46.

This embodiment also provides a drum washing machine with the sealed drainage device, including:

Inner tube 17, which holds washing water independently when washing clothes;

The drain 39 is opened on the inner tube 17 for draining washing water;

The sealing drainage device is installed on the inner wall of the inner cylinder, and the centrifugal movement of the centrifugal component drives the blocking component to open the drainage port under the action of the centrifugal force of the rotation of the inner cylinder.

In the drum washing machine of this embodiment, in order to satisfy the centrifugal drainage, the overall weight M of the centrifugal component, the rotation speed V of the inner cylinder, the elastic pre-tightening force F0 of the elastic member, and the overall mass m of the blocking member during the structural design Matches between:

When the rotational speed V of the inner cylinder reaches the set value V0, the centrifugal part starts centrifugal movement under the action of the centrifugal force of the inner cylinder, and the centrifugal force generated by the centrifugal part overcomes the elastic pre-tightening force F0 and the centrifugal force of the blocking member to drive the blocking member along The inner cylinder moves radially and close to the central axis of the inner cylinder to open the drain.

In some embodiments, a clothes lifting device is installed on the inner wall of the inner tube, and the clothes lifting device has an inner chamber and a communication hole connecting the inner chamber and the inner tube, and the drainage port is opened in the inner cavity. On the wall of the inner tube in the room, the sealed drainage device is arranged in the inner cavity.

In this embodiment, the sealed drainage device is arranged in the internal cavity, which realizes the hidden installation of the sealed drainage device, avoids the sealed drainage device from interfering with the clothes in the inner cylinder, saves a separate protective shield, reduces the manufacturing cost, and simplifies The assembly process.

The clothing lifting device of this embodiment is a lifting rib 32, the lifting rib 32 is installed on the inner wall of the inner cylinder 17 by a fastening screw 45, and the lifting rib is provided with a screw column 55 for assembling the fastening screw 45, The wall of the inner cylinder is provided with a through hole 56 for the fastening screw 45 to pass through.

This embodiment also provides a method for controlling the drum washing machine, including:

During the drainage and/or dehydration process of the washing machine, the inner drum speed V is controlled to satisfy V≥V0, and the centrifugal component moves under the centrifugal force of the inner drum rotation to drive the blocking component to open the drain;

Wherein, the V0 is the set value.

Therefore, the drum washing machine of this embodiment can achieve drainage and dehydration by controlling the rotation speed of the inner tub. In the drainage phase, the inner tub is controlled to rotate at a speed of at least V0 to achieve drainage. In the dehydration phase, the inner tub is controlled to increase its speed to no less than V0. Dewatered drainage.

Embodiment 6:

As shown in Figures 13-17, a sealed drainage device for a drum washing machine of this embodiment. The drum washing machine includes an inner tub 17 for independently holding washing water when washing clothes. The inner tub 17 is provided with a drainage port 39. The sealed drainage device includes :

The blocking component is in sealing contact with the drain port 39 and is used to block the drain port 39.

In the sealed drainage device of the present application, the drainage port 39 is blocked by the blocking member, so that the drum washing machine with the non-porous inner tub keeps the drainage port 39 closed during washing and rinsing, and realizes the independent water storage in the non-porous inner tub.

In some embodiments, the plugging component is in direct sealing contact with the drain port 39 to block the drain port 39;

Alternatively, the plugging component includes a plugging portion 36 and a sealing element 40 provided on the plugging portion 36, and the sealing element 40 of the plugging component is in sealing contact with the drain port 39 to block the drain port 39.

In some embodiments, the blocking member has a sealing protrusion 41 for circumferential contact sealing, and the sealing protrusion 41 maintains sealing contact with the outer peripheral inner cylinder wall or the inner wall of the drain port 39 to seal the drain port.

And/or, the sealing member 40 has a sealing protrusion 41 for circumferential contact sealing, and the sealing protrusion 41 is in sealing contact with the outer peripheral inner cylinder wall or the inner wall of the drain port 39 to block the drain port 39.

In order to achieve a good circumferential seal between the sealing protrusion 41 and the outer peripheral inner cylinder wall of the drain port 39, the inner cylinder 17 described in this embodiment has a flat portion 57 with a flat inner wall surface, and the drain port 39 is opened on the flat surface. On the portion 57, the sealing convex portion 41 and the flat portion 57 on the outer periphery of the drain port 39 maintain circumferential sealing contact to block the drain port.

As another implementation of this embodiment, the drain port 39 described in this embodiment is opened on the arc-shaped wall of the inner cylinder, and the sealing protrusion 41 is connected to the inner surface of the arc-shaped wall of the outer circumference of the drain port 39 Keep the circumferential sealing contact to block the drain.

The sealing protrusion 41 described in this embodiment includes at least one ring of sealing ribs arranged on the blocking member/seal, and each sealing rib maintains circumferential sealing contact with the inner surface of the arc-shaped wall.

Optionally, the sealing protrusion includes at least two rings of sealing ribs arranged on the blocking member/seal.

The heights of the sealing ribs are equal and not less than the distance between the innermost ring sealing rib and the inner surface of the arc-shaped wall opposite to the innermost ring sealing rib;

Alternatively, the height of the sealing ribs of each ring is gradually increased from the outer ring to the arrangement direction of the inner ring, so that the inner surface of the arc-shaped wall opposite to the sealing ribs of each ring maintains circumferential sealing contact.

As an implementation of this embodiment, the sealing rib has a sealing rib base, a sealing rib end for maintaining sealing contact with the peripheral wall of the drain outlet, and a transitional connection between the sealing rib base and the sealing rib end. The transition part of the sealing rib.

Optionally, the transition portion of the sealing rib is a rounded structure R between the end of the sealing rib and the body of the sealing rib.

The sealing member 40 in this embodiment is a sealing plug body made of elastic material. The sealing plug body has an open installation chamber for assembling the plugging parts; the sealing plug body has an inner cylinder connected to the outer periphery of the drain port. The sealing end surface where the flat part cooperates for sealing;

Optionally, at least one ring of sealing ribs is provided on the sealing end surface.

The sealed drainage device of this embodiment further includes a centrifugal component that moves under the action of the centrifugal force of the rotation of the inner cylinder; the centrifugal component is connected with the blocking component, and the centrifugal movement of the centrifugal component drives the blocking component to open the drain;

The plugging component includes a reciprocating guide portion 35 provided in the guide channel, a plugging portion 36 provided at one end of the guide portion 35 for sealing the drain 39, and a plugging portion 36 provided at the other end of the guide portion 35. The connecting part 34 connecting the centrifugal component; the sealing member 40 is arranged on the blocking part.

Inner tube 17, which holds washing water independently when washing clothes;

The drain 39 is opened on the inner tube 17 for draining washing water;

The sealing drainage device is installed on the inner wall of the inner cylinder, and when the rotation speed of the inner cylinder reaches the set value V0, the blocking component opens the drainage port.

In some embodiments, there is an extension wall between the drain port 39 and the inner wall of the inner cylinder 17 so that the drain port protrudes inside or outside the inner cylinder wall, and the plugging member extends into the extension wall and The inner wall maintains circumferential sealing contact to block the drain port, increasing the sealing effect between the plugging component and the drain port 39.

Alternatively, the drain port 39 is flush with the inner wall of the inner cylinder 17, and the blocking member is in circumferential sealing contact with the outer circumference of the drain port or the inner wall of the drain port to seal the drain port.

Embodiment Seven:

As shown in Figure 13, Figures 18-22, a sealed drainage device for a drum washing machine of this embodiment. The drum washing machine includes an inner tube 17 for independently holding washing water when washing clothes. The inner tube 17 is provided with a drain 39 to seal Drainage devices include:

The plugging component is in sealing contact with the drain port and is used to seal the drain port.

The plugging component is provided with a first sealing component 47 with unequal cross-sectional areas along the central axis, and at least one outer peripheral wall of the cross-section is used to seal the drainage port in circumferential sealing contact with the drainage port.

The sealing component of the sealing drainage device of this embodiment has a first sealing component with a variable cross-section, so that the first sealing component can better circumferentially seal the drainage port and ensure the sealing effect of the drainage port.

As an implementation of this embodiment, the first sealing member includes a proximal portion disposed close to the drain port and a distal portion disposed away from the drain port. The first sealing member 47 extends from the proximal portion along the central axis. The cross-sectional area of each cross section gradually increases toward the distal end.

Optionally, the first sealing member 47 is a tapered or truncated cone-shaped sealing plug with a gradually increasing cross-sectional area from the proximal end to the distal end.

As an implementation of this embodiment, the inner cylinder 17 has a flat part with a flat inner wall surface, the drain port 39 is opened on the flat part, and at least one cross-section of the first sealing member 47 is The peripheral wall is in circumferential sealing contact with the drain port 39 to block the drain port;

Alternatively, the drainage port is provided on the arc-shaped wall of the inner cylinder, and the outer circumferential inner cylinder wall of at least one cross section of the first sealing member 47 is in circumferential sealing contact with the drainage port to block the drainage port.

The blocking component in this embodiment is also provided with a second sealing component located on the outer periphery of the first sealing component 47, and the second sealing component is in circumferential sealing contact with the outer circumference and inner cylinder wall of the drain port 39. In this embodiment, the first sealing component and the second sealing component achieve multiple seals between the blocking component and the drain port 39 to ensure the sealing effect of the drain port 39 and prevent water leakage.

The second sealing component of this embodiment realizes the first re-seal of the outer periphery of the drain port, and the sealing contact between the first sealing component and the drain port ensures the second re-seal.

As an implementation of this embodiment, the second sealing member includes a sealing protrusion 41 provided on the outer periphery of the first sealing member 47 for contact sealing, the sealing protrusion 41 and the outer peripheral inner cylinder wall of the drain 39 Keep sealed contact to block the drain.

In some embodiments, the first sealing component 47 and the second sealing component are respectively made of elastic material and are respectively assembled on the blocking component;

Alternatively, the first sealing component and the second sealing component are respectively made of elastic materials, and the first sealing component and the second sealing component are connected as one body and then assembled on the blocking component;

Alternatively, the first sealing component and the second sealing component are a sealing plug body integrally made of elastic material, and the sealing plug body is assembled on the blocking component.

The plugging component includes a reciprocating guide portion provided in the guide channel, a plugging portion provided at one end of the guide portion for blocking the drainage port, and a plugging portion provided at the other end of the guide portion for connecting the centrifugal component Connecting part; the first sealing part/second sealing part is arranged on the blocking part.

This embodiment also discloses a drum washing machine with the sealed drainage device, including:

Inner tube, independently holding washing water when washing clothes;

The drainage port is opened on the inner cylinder for draining washing water;

In some embodiments, the drainage port 39 has an extension wall 48 extending from the inner wall of the inner cylinder 17 so that the drainage port protrudes from the inner cylinder wall or the inner cylinder wall, and the first sealing member 47 extends into In the extension wall 48, at least one cross-sectional outer peripheral wall and the inner peripheral wall of the extension wall 48 maintain circumferential sealing contact to block the drain.

In order to improve the sealing effect of the first sealing member 47, in some embodiments, the first sealing member 47 is in surface contact or line contact with the inner peripheral wall of the extension wall 48 of the drain port and seals the drain port.

In some embodiments, the inner peripheral wall of the extension wall matches the shape of the outer peripheral wall of the first sealing member.

In some embodiments, the first sealing member is a tapered or truncated sealing plug whose cross-sectional area gradually increases from the proximal end to the distal end relative to the drainage port, and the extension wall of the drainage port It is a truncated cone-shaped peripheral wall whose internal cross-sectional area gradually decreases from the inner cylinder wall to the direction away from the central axis of the inner cylinder.

Embodiment 8:

As shown in Figures 1 and 23-25, a drum washing machine in this embodiment includes:

Inner tube 17, which holds washing water independently when washing clothes;

The inner cylinder drain 39 is opened on the inner cylinder 17 for draining washing water;

The installation piece 50 is installed at the drain port 39 on the inner wall of the inner cylinder 17;

The drainage port 51 of the installation piece is opened on the installation piece and communicates with the drainage port 39 of the inner cylinder;

The sealing drainage device includes a plugging component for plugging the drainage port 51 of the mounting member.

The mounting member 50 of this embodiment is in a sealed connection with the inner cylinder wall.

Optionally, the drain port of the inner cylinder is provided on the inner wall of the inner cylinder, and the mounting member includes a connecting portion, and the connecting portion is in a sealed connection with the inner cylinder wall on the outer periphery of the drain port of the inner cylinder.

The mounting member 50 of this embodiment further includes an end cover part. Two opposite side walls of the flat part are in a sealed connection with the inner wall of the inner cylinder. The other two opposite side walls of the flat part are connected to the end cover parts. The cover is kept in a sealed connection with the inner wall of the inner cylinder.

Optionally, the flat part and the end cover part are integrally formed.

In this embodiment, a mounting member 50 is installed on the inner wall of the inner cylinder. The mounting member 50 has a mounting member drainage port 51 communicating with the inner cylinder drainage port 39. The drainage port of the mounting member can be realized by blocking the mounting member drainage port 51 by a sealing drainage device. The sealing of 39 does not change the arc-shaped wall structure of the inner cylinder in the related art, and at the same time, the sealing assembly of the sealing drainage device is realized through the mounting member 50. The mounting structure is simple, and because the mounting member has a sealing fit with the blocking component The flat part has better sealing effect.

In some embodiments, the drainage port of the inner cylinder is opened on the arc-shaped wall of the inner cylinder, the mounting member includes a connecting portion, and the connection portion is sealed with the outer circumference of the inner cylinder wall of the drainage port of the inner cylinder. connection.

In some embodiments, the flat part is a flat plate, and the end cover part further includes an end cover plate. Two opposite side walls of the flat plate are kept in a sealed connection with the arc-shaped inner wall of the inner cylinder. The other two opposite side walls of the flat plate are respectively connected to the end cover plate, and the end cover plate is kept in a sealed connection with the arc-shaped inner wall of the inner cylinder.

Optionally, the straight plate and the end cover plate are integrally formed.

As shown in Figures 23 and 24, as an implementation of this embodiment, a sealing ring 52 is provided between the mounting member 50 and the inner wall of the inner cylinder to achieve a sealed connection, or the mounting member 50 and the inner cylinder The inner wall is welded.

In this embodiment, the cross-sectional area of the inner cylinder drain 39 is greater than or equal to the cross-sectional area of the mounting member drain 51; in this way, when draining, the water discharged from the mounting member drain 51 can be discharged from the inner cylinder drain 39 in time to ensure Smooth drainage.

Optionally, the inner cylinder drain opening and the mounting member drain opening are both circular holes, and the aperture of the inner cylinder drain opening is greater than or equal to the aperture diameter of the mounting member drain opening.

In some embodiments, the central axis of the drainage port of the inner cylinder and the central axis of the drainage port of the mounting member are arranged collinearly, so that the diameter of the water discharged from the drainage port 51 of the mounting member can be discharged directly to the drain port 39 of the inner cylinder. Avoid baffling of the outflow path from the drain outlet 51 of the mounting member to the drain outlet 39 of the inner cylinder, which affects the drainage effect.

In order to increase the sealing effect between the sealing drainage device and the drainage port 51 of the mounting member, a sealing mating portion 54 which is sealed to the plugging member is provided on the outer periphery of the drainage port 51 of the mounting member on the flat portion.

Optionally, the sealing mating portion 54 is at least one ring of sealing ribs arranged on the outer periphery of the drainage port, and the sealing ribs are in sealing contact with the sealing portion of the blocking component.

In some embodiments, the mounting member extension wall 53 is provided between the mounting member drain opening 51 and the flat portion so that the mounting member drain opening 51 protrudes inside or outside the flat portion, and the blocking member is provided with a second A sealing member 47, the first sealing member 47 extends into the extension wall 53 of the mounting member, and the outer peripheral wall of at least one cross section is kept in sealing contact with the inner peripheral wall of the extension wall 53 of the mounting member.

In some embodiments, the first sealing member 47 is in surface contact or line contact with the inner peripheral wall of the extension wall 53 of the mounting member and seals the drainage port of the mounting member;

Optionally, the inner peripheral wall of the extension wall 53 of the mounting member matches the shape of the outer peripheral wall of the first sealing member 47.

In some embodiments, the first sealing member 47 is a tapered or truncated cone-shaped sealing plug whose cross-sectional area gradually increases from the proximal end to the distal end relative to the drainage port of the mounting member. The piece extension wall 53 is a truncated cone-shaped peripheral wall whose internal cross-sectional area gradually decreases along the flat portion away from the central axis of the inner cylinder.

In some embodiments, a clothes lifting device is provided on the inner wall of the inner tube, and the clothes lifting device has an inner chamber and a communication hole 33 connecting the inner chamber and the inner tube, and the drainage port is opened in the interior. On the wall of the inner cylinder in the chamber, the mounting member 50 and the sealing drainage device are all arranged in the inner chamber.

The lifting device described in this embodiment is a lifting rib 32. The lifting rib 32 has a lifting rib base 58 mounted on the inner wall of the inner cylinder and a lifting rib protrusion 49 protruding into the inner cylinder. The communicating hole 33 is provided On the raised portion 49 of the lifting rib, the mounting member 50 and the base 58 of the lifting rib are sealed in a circumferential direction.

The sealed drainage device of this embodiment also includes a centrifugal component that moves under the action of the centrifugal force of the rotation of the inner cylinder; the centrifugal component is connected with the blocking component, and the centrifugal movement of the centrifugal component drives the blocking component to open the drainage port of the installation component.

Example 9:

As shown in FIGS. 13 and 26-27, a drum washing machine in this embodiment includes:

Inner tube 17, which holds washing water independently when washing clothes;

The assembly port is opened on the inner cylinder 17;

The mounting part 50 is sealed and installed in the assembly port;

The installation part drainage port 51 is opened on the installation part;

The sealing drainage device includes a plugging component for plugging the drainage port of the mounting member.

In this embodiment, a mounting member 50 is installed on the assembly opening of the inner cylinder, and the mounting member 50 has a mounting member drainage port 51. The drainage port 51 of the mounting member can be blocked by a sealing drainage device to realize the sealing of the drainage of the inner cylinder without changing the relevant In addition to the arc-shaped wall structure of the inner cylinder in the technology, the sealing assembly of the sealing drainage device is realized by the mounting member 50. The mounting structure is simple, and since the mounting member has a flat part that is sealed and matched with the blocking member, the sealing effect is better.

In some embodiments, the assembly through opening is opened on the cylinder wall of the inner cylinder, and the mounting member 50 includes a connecting part, and the connecting part is in a sealed connection with the inner peripheral wall of the assembly through opening.

The mounting part in this embodiment includes a flat part, and the drainage port of the mounting part is provided on the flat part.

In order to realize the sealing of the plugging component to the drainage port 51 of the mounting piece, as an implementation of this embodiment, the flat part is provided on the outer wall of the outer periphery of the drainage port 51 of the mounting piece with a sealing fit for sealingly fitting with the plugging component部54.

Optionally, the sealing mating portion 54 is at least one ring of sealing ribs arranged on the outer periphery of the drainage port of the mounting member, and the sealing ribs are in sealing contact with the blocking component.

As another implementation of this embodiment, the blocking component has at least one ring of sealing ribs, and the sealing ribs maintain sealing contact with the flat part of the outer periphery of the drainage port 51 of the mounting member;

And/or, a sealing element is arranged on the blocking component, the sealing element has at least one ring of sealing ribs, and the sealing ribs are kept in sealing contact with the outer wall surface of the flat part on the outer periphery of the drainage port of the mounting member.

As another implementation of this embodiment, at least one ring of first sealing ribs is provided on the outer wall of the drainage port of the mounting member on the flat portion; the sealing member is provided on the sealing member, and the sealing member has at least A circle of second sealing ribs; the first sealing ribs and the second sealing ribs are arranged in a staggered manner, the first sealing ribs are in sealing contact with the flat end surface of the sealing member, and the second sealing ribs are flat with the outer periphery of the drainage port of the mounting member The flat part maintains hermetic contact.

In order to increase the sealing effect of the plugging component on the drainage port of the mounting member, in some embodiments, the mounting member extension wall 53 is provided between the mounting member drainage port 51 and the flat portion so that the mounting member drainage port 51 protrudes inside or outside. Protruding from the flat portion, the blocking member is provided with a first sealing member 47, the first sealing member 47 extends into the mounting member extension wall 53, and at least one cross-sectional outer peripheral wall and the inner peripheral wall of the mounting member extension wall Maintain circumferential sealing contact.

In some embodiments, the inner peripheral wall of the extension wall 53 of the mounting member matches the shape of the outer peripheral wall of the first sealing member 47;

In some embodiments, the first sealing member 47 is a tapered sealing plug whose cross-sectional area gradually increases from the proximal end to the distal end relative to the drainage port of the mounting member, and the mounting member extends wall 53 is the peripheral wall of the truncated cone whose internal cross-sectional area gradually decreases from the flat part to the direction away from the central axis of the inner cylinder.

In this embodiment, a clothes lifting device is provided on the inner wall of the inner cylinder 17, the clothing lifting device has an internal chamber and a communication hole connecting the internal chamber and the inner cylinder, and the assembly opening is opened in the inner chamber On the wall of the inner cylinder, the sealed drainage device is arranged in the inner cavity.

The drainage sealing device of this embodiment also includes a centrifugal component that moves under the action of the centrifugal force of the rotation of the inner cylinder; the centrifugal component is connected with the blocking component, and the centrifugal movement of the centrifugal component drives the blocking component to open the drainage port of the installation component.

In some embodiments, the centrifugal component includes a counterweight and a connector. One end of the connector is connected with the counterweight, and the other end is connected with the blocking component. The middle of the connector has a shaft hole rotatably installed on the shaft. ；

Optionally, the counterweight part and the connecting part are integrally formed.

It should be noted that those skilled in the art can implement the implementation separately or in combination with each other according to the description of the foregoing embodiments.

The drum washing machine of the present application includes an inner tube for independently holding washing water when washing clothes. The inner tube adopts a non-porous inner tube design. During washing, the inside is a closed chamber with vents. The washing machine can be independently held during washing and rinsing. For washing water, there is no water between the inner tube and the outer tube, so as to save water, while avoiding the formation of dirt between the inner tube and the outer tube, keeping the tube wall clean, and improving the user experience; drainage is provided on the inner tube of the washing machine Mouth, from which it drains during drainage and/or dehydration.

The sealed drainage device disclosed in the present application uses the centrifugal force of the inner cylinder to drive the centrifugal component to perform centrifugal movement, and the centrifugal component drives the blocking component to move to open the drain, thereby realizing drainage: in principle, using the working characteristics of the drum washing machine, through setting the internal Drainage can be achieved by drum rotation speed, which is easy to achieve; in terms of structure, the blocking component is opened by the centrifugal movement of the centrifugal component to achieve drainage, and the structure is simple.

Therefore, the sealed drainage device of the present application aims at keeping the drain port closed during washing and rinsing of a drum washing machine with a non-porous inner tub to realize independent water storage in the non-porous inner tub, and realizes centrifugation by controlling the rotation speed of the inner tub during drainage and/or dehydration. Drainage realizes the sealing and drainage problems of drum washing machines with non-porous inner tubs.

Claims

A sealed drainage device is suitable for a drum washing machine. The drum washing machine includes an inner tub configured to independently contain washing water when washing clothes, the inner tub is provided with a drainage port, and the sealed drainage device includes:

The centrifugal component is configured to move under the centrifugal force of the rotation of the inner cylinder;

The blocking component is configured to block the drain;

The centrifugal component is connected with the blocking component, and the centrifugal movement of the centrifugal component drives the blocking component to open the drain.
The sealed drainage device according to claim 1, wherein the centrifugal component and the blocking component can both reciprocate along the radial direction of the inner cylinder, and the blocking component is driven by the centrifugal component , And the direction of the centrifugal movement of the centrifugal component is the same or opposite.
The sealed drainage device according to claim 1, wherein the centrifugal component moves away from the central axis of the inner cylinder in the radial direction of the inner cylinder under the action of the centrifugal force of the rotation of the inner cylinder, and the blocking The component moves along the radial direction of the inner cylinder under the drive of the centrifugal component, close to the central axis of the inner cylinder.
The sealed drainage device according to claim 1, wherein the blocking member includes a blocking member and an elastic member, and the elastic member is configured to act on the blocking member to keep the blocking member sealed and blocked For the drainage port, the centrifugal component is connected with the blocking component, and the centrifugal movement of the centrifugal component drives the blocking component to move to open the drainage port.
The sealed drainage device according to claim 4, wherein the sealing member is in direct sealing contact with the drainage port to block the drainage port;

Alternatively, the sealing member makes a sealing contact with the drain port to block the drain port.
The sealed drainage device according to claim 5, wherein the blocking member has a sealing protrusion for circumferential contact sealing, and the sealing protrusion maintains a sealing contact with the outer peripheral inner cylinder wall or the inner wall of the drain port To block the drain;

And/or, at least one of the inner wall of the drain port and the outer peripheral inner cylinder wall has a sealing protrusion for circumferential contact and sealing, and the sealing protrusion maintains sealing contact with the blocking member to block the Drain

And/or, the sealing member has a sealing protrusion for circumferential contact sealing, and at least one of the sealing member and the drain port is in sealing contact with the sealing protrusion to block the drain mouth.
The sealed drainage device according to claim 4, comprising a housing with a guide channel inside, and the blocking member includes a reciprocating guide part arranged in the guide channel, and a guide part arranged in the guide part. The plugging portion at the first end for plugging the drain and the connecting portion provided at the second end of the guide portion for connecting the centrifugal component; the elastic member is installed in the housing, so The first end of the elastic member abuts against the housing, and the second end of the elastic member abuts against the blocking member.
The sealed drainage device according to any one of claims 1-7, wherein the centrifugal component includes a counterweight and a connecting piece, the first end of the connecting piece is connected with the counterweight, and the connecting piece The second end is connected with the blocking component, and the middle part of the connecting piece is provided with a shaft hole which is rotatably installed on the shaft.
The sealed drainage device according to claim 8, wherein the counterweight and the connecting member are integrally formed.
A drum washing machine, including:

The inner tube is configured to hold washing water independently when washing clothes;

A drainage port is opened on the inner cylinder and used for draining washing water;

Sealed drainage device, the sealed drainage device is the sealed drainage device according to any one of claims 1-9, the sealed drainage device is installed on the inner wall of the inner cylinder, and the centrifugal member rotates in the inner cylinder The centrifugal movement under the action of centrifugal force drives the blocking component to open the drain.
The drum washing machine according to claim 10, wherein the overall weight M of the centrifugal component, the rotation speed V of the inner tub, the elastic pre-tightening force F0 of the elastic member, and the overall mass m of the blocking member conform to:

When the rotational speed V of the inner cylinder reaches the set value V0, the centrifugal part starts to move centrifugal under the action of the centrifugal force of the inner cylinder, and the centrifugal force generated by the centrifugal part overcomes the elastic pre-tightening force F0 and the centrifugal force of the blocking member The blocking member is driven to move along the radial direction of the inner cylinder and close to the central axis of the inner cylinder to open the drain.
The drum washing machine according to claim 10 or 11, wherein a laundry lifting device is provided on the inner wall of the inner tub, the laundry lifting device has an inner chamber and a communication between the inner chamber and the inside of the inner tub A hole, the drainage port is opened on the wall of the inner cylinder in the internal cavity, and the sealed drainage device is arranged in the internal cavity.
A method for controlling a drum washing machine according to any one of claims 10-12, comprising:

In the process of at least one of the drainage and dehydration of the drum washing machine, the rotation speed V of the inner drum is controlled to satisfy V≥V0, and the centrifugal component moves under the centrifugal force of the rotation of the inner drum to drive the blocking component to open the Drain

Wherein, the V0 is a set value.