WO2020182212A1 - Drain sealing device for drum washing machine, and drum washing machine - Google Patents

Abstract

A drain sealing device for a drum washing machine, and a drum washing machine. The drum washing machine comprises an inner drum (17) used to independently hold wash water while washing laundry. A drain opening (39) is formed at the inner drum (17). The drain sealing device comprises a blocking component in contact with and sealing the drain opening (39). The blocking component is used to block the drain opening (39).

Description

Sealed drainage device of drum washing machine and drum washing machine

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office with application number 201910190606.9 on March 13, 2019. The entire content of this application is incorporated into this application by reference.

Technical field

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

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, the Chinese patent application with the application number 201410215346.3 and the name "a drum washing machine" relates to a drum washing machine, which includes a cabinet with an inner tube and an outer tube. A door seal is provided between the cylinder and the box body, and the inner cylinder is connected with the driving device. The inner cylinder is a non-porous inner cylinder, and the inner cylinder is a tapered cylinder with a small diameter at the bottom of the cylinder and a large diameter at the mouth of the cylinder. , The mouth of the inner cylinder is curved inward, and 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 end of the water inlet pipe extends through the door seal into the inner Inside the cylinder, 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 this application is a non-porous inner cylinder. The water inlet pipe is provided on the door seal to realize the water intake of the inner cylinder, and the shape of the inner cylinder itself realizes drainage during the dehydration process, which can avoid Water is stored between the inner and outer cylinders, saving washing water consumption.

However, the above-mentioned application provides a drum washing machine with a non-porous inner tub, because laundry needs to 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 tub, which will increase the motor The burden of power consumption, power consumption and other issues also follow. In addition, the drum washing machine disclosed in this patent uses a door seal to enter the water. Since the door seal is used to seal the opening of the outer tub of the washing machine, setting a water inlet duct on the door seal easily affects the sealing effect of the door seal and is not easy to achieve , And the application 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 It is a solution to seal the contact and block the drain, 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 stability, and the seal is easy to fall off. As a result, the drain can't be blocked, resulting in dripping and leakage.

Summary of the invention

The present application provides a sealed drainage device for a drum washing machine. The drum washing machine includes an inner tub that independently holds washing water when washing clothes. A drainage port is provided on the inner tub. The sealed drainage device includes:

The blocking component is in sealing contact with the drain port, and the blocking component is configured to block the drain port.

The application also provides a drum washing machine, including:

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

The drainage port is opened on the inner cylinder and configured to discharge washing water;

In the above-mentioned sealed drainage device, the sealed drainage device is installed on the inner wall of the inner cylinder, and is configured to open the drainage port when the rotation speed of the inner cylinder reaches the set value V0.

Description of the drawings

FIG. 1 is a schematic diagram of the principle of a drum washing machine according to an embodiment of the present application;

2 is a schematic diagram of the principle of the first embodiment of the drum washing machine in the second embodiment of the present application;

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

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

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 the drum washing machine in Figure 5 in a pressure relief state;

Fig. 7 is a partial enlarged view of the drum washing machine in Fig. 5 in a pressurized state;

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

9 is a partial enlarged view of the first embodiment of the drum washing machine in FIG. 8 in a pressure relief state;

Fig. 10 is a partial enlarged view of the first embodiment of the drum washing machine in Fig. 8 in a pressurized state;

11 is a partial enlarged view of the second embodiment of the drum washing machine in FIG. 8 in a pressure relief state;

Fig. 12 is a partial enlarged view of the second embodiment of the drum washing machine in Fig. 8 in a pressurized state;

13 is a schematic diagram of the principle of the fifth to ninth drum washing machine of the present application;

14 is a schematic diagram of the working principle of the sealing drainage device installed on the drum washing machine in Embodiment 5 and Embodiment 6 of the present application;

Figure 15 is a partial enlarged view of the sealed drainage device in Figure 14;

Figure 16 is a partial enlarged view of another embodiment of the sealed drainage device in Figure 14;

FIG. 17 is an exploded view of the sealed drainage device of Embodiment 5 and Embodiment 6 of the present application;

18 is a schematic diagram of the working principle of the sealed drainage device installed on the drum washing machine in Embodiment 7 of the present application;

Figure 19 is a partial enlarged view of the sealed drainage device in Figure 18;

20 is a partial enlarged view of another embodiment of the sealed drainage device in FIG. 18;

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;

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

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

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 the sealed drainage device in Figure 23 and Figure 24;

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

Figure 27 is a partial enlarged view of the sealed drainage device in Figure 26.

detailed description

The sealed drainage device of the drum washing machine and the drum washing machine of the present application will be described in detail 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 there is no need to fill washing water or rinsing water between the inner tub and the outer tub, thereby reducing the size of the washing machine. The washing water consumption is high, and water resources are saved; the possibility of dirt adhesion between the inner tube and the outer tube is avoided, and the washing machine used by the user is clean and hygienic; and the user experience is improved.

The drum washing machine of this embodiment includes a housing 19, which includes: an upper panel 2, a front panel, a back panel and a bottom plate. A foot 9 is installed and fixed on the bottom of the bottom plate, which is configured 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 is configured to collect the drainage from the inner cylinder 17 and the drainage from the high-speed centrifugal dehydration of the inner cylinder 17. The inner wall of the inner tube 17 is provided with lifting ribs 32. When the inner tube 17 rotates, the lifting ribs 32 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 a bearing 12 is installed and fixed in the central mounting hole. The inner cylinder shaft 13 tightly connected to the inner cylinder 17 passes through the bearing 12 and is connected to the drive motor 16. The inner cylinder door 6 that can be opened or closed is installed on the front inner cylinder mouth of the inner cylinder 17, thereby realizing the inner cylinder 17 as a sealed cabin structure.

A door 5 that can be opened or 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 specific solution is as follows:

As shown in Figure 1, a drum washing machine includes 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 and contains washing water when washing clothes. A flow sensor 1 for detecting the flow rate of the inlet water is provided on the inlet pipe.

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.

The flow sensor 1 is arranged on the first water inlet pipe, so that the detergent in the detergent box can enter 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 intake of the inner cylinder 17 in real time to reach the set water intake, and the main controller 4 controls to close the water intake 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 arranged at any position on the water inlet pipe in this embodiment. The flow sensor 1 can be arranged at the rear 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 through a line, and the main controller 4 can collect the inlet of the inner cylinder 17 in real time. When the water volume reaches the set water inlet volume, the main controller 4 controls to 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 is connected to the inner drum 17 through the inner drum shaft 13 in a transmission manner to drive The inner cylinder 17 rotates, the inner cylinder shaft 13 has a hollow channel 14 communicating with the inner cylinder 17, and the water inlet pipe is connected to the hollow channel of the inner cylinder shaft 13.

The inner cylinder shaft 13 is connected to a drive motor 16. The drive 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 passes through the rotor. The hole communicates with the hollow channel 14 of the inner cylinder shaft 13.

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.

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 ejector mechanism 10 pushes the one-way valve plug 11 to drain.

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 a washing or rinsing process. 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.

Example two

As shown in Figures 2 to 4, a drum washing machine of this embodiment includes an inner tub 17 and a water inlet pipe. The inner tub 17 is a non-porous inner tub configured to contain washing water when washing clothes, and It includes a water measuring device for measuring the amount of water inflow. The water inlet pipe is connected to the water measuring device, and the water measuring device is connected to the inner cylinder 17.

The drum washing machine of this embodiment is equipped with a water measuring device, enters the water measuring device for quantitative measurement before water is poured into the inner tub 17, 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, which 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.

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 a washing or rinsing process. The washing machine controls the washing water to enter the water metering tank 21. When the water volume in the water metering tank 21 reaches the set value, the water supply is stopped. All the water in the water measuring tank 21 is discharged into the inner cylinder 17, and the water is started again to enter the water measuring tank 21, and the cycle is repeated until the water level in the inner cylinder reaches the set value, and the water inflow is ended.

The washing machine controls the washing water to enter the measuring water tank 21. When the water volume in the measuring water tank 21 reaches the set value, the water is stopped, and the heating device 26 is controlled to operate to heat the washing water. When the water temperature detection device detects that the water temperature in the measuring water tank reaches When the value is set, all the water in the water measuring tank 21 is discharged into the inner cylinder 17.

Example three

This embodiment can solve the problem of how to ensure the unbalanced air pressure in the sealed compartment of the non-porous inner drum washing machine. Specifically, 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 FIGS. 5-7, a drum washing machine of this embodiment includes an inner tube 17, which is a non-porous inner tube, configured to hold washing water when washing clothes, and also includes an inner tube 17 for communicating with The air pressure balance mechanism with the external environment is configured to balance the air pressure inside the inner cylinder 17.

When water enters, the air in the sealed compartment of the inner cylinder 17 can overflow through the air pressure balance mechanism under pressure to ensure air pressure balance.

When the water is suddenly cut off, the external atmosphere can quickly enter the sealed compartment of the inner cylinder 17 and break the 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 17.

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. On the shaft 13, the inside of the inner cylinder 17 is communicated 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 17 can be prevented from flowing out through the pressure equalizing channel 27.

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 the inner tub opening of the inner tub 17 is installed for sealing the inner tub. The inner cylinder door 6 of the cylinder, the cylinder mouth of the outer cylinder 18 is open, one end of the pressure equalization channel 27 is connected to the inner cylinder 17, and the other end is arranged inside the outer cylinder 18 and communicates with the inner cylinder 18. In this way, to prevent extreme situations, even if the pressure equalizing channel 27 exits the water, it can 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.

The outer cylinder 18 is also provided with a locking mechanism for locking the inner cylinder from rotating. 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 17 can be smoothly discharged, the pressure balance inside the inner cylinder 17 is maintained, and at the same time, the influent water is prevented from being directly discharged through the pressure equalizing channel 27 and leaking.

The hollow channel 14 extends from one end to the other along the central axis direction of the inner cylinder shaft 13, the pressure equalization channel 27 includes a first channel section and a second channel section, and the first channel section is arranged parallel to the hollow channel 14 One end of the first channel section is connected to the inside of the inner cylinder 17, one end of the second channel section is connected to the other end of the first channel section, and the other end of the second channel section extends to the inner cylinder wall of the inner cylinder shaft 13 and The inside of the outer cylinder 18 communicates.

The second channel section is perpendicular to the first channel section to form an L-shaped pressure equalizing channel 27.

The inner cylinder shaft 13 is connected to a drive motor 16. The drive 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 passes through the rotor. The hole communicates with the hollow channel 14 of the inner cylinder shaft 13.

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 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.

Example four

This embodiment can solve the problem of how to ensure the unbalanced air pressure in the sealed compartment of the non-porous inner drum washing machine. For example, it can solve the problem of sudden water cut-off of the solenoid valve, especially the water cut-off of the water pipe network, 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, a drum washing machine of this embodiment includes an inner tube 17, which is a non-porous inner tube, configured to contain washing water when washing clothes, and also includes an inner tube 17 for communicating with An air pressure balancing mechanism that balances the air pressure inside the inner cylinder 17 with the external environment. The air pressure balancing mechanism includes at least one of the following: a pressure increasing mechanism and a pressure relief mechanism.

The pressurizing mechanism described in this embodiment includes a pressurizing port 28 and a negative pressure safety valve 29. The pressure-increasing channel 28 is arranged on the inner cylinder 17 close to the position of the central axis of rotation, and the negative pressure safety valve 29 is arranged on the pressure-increasing channel 28. The negative pressure safety valve 29 is configured to unidirectionally pass through the pressurizing port 28 when the internal pressure of the inner cylinder 17 is lower than the atmospheric pressure of the external environment. The ambient air enters the inner cylinder 17 through the pressurizing channel 28 to be pressurized until the internal pressure of the inner cylinder 17 is balanced with the ambient 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 provided on the inner cylinder 17 at a position close to the central axis of rotation and is always higher than the highest water level in the inner cylinder 17, and the positive pressure safety valve 31 is provided on the pressure relief port 30. The positive pressure safety valve 31 is configured to release the pressure through the unidirectional pressure relief port 30 when the internal pressure of the inner cylinder 17 is greater than the atmospheric pressure of the external environment, until the internal pressure of the inner cylinder 17 is balanced with the external environment pressure, 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 setting value of the positive pressure safety valve 31, the positive pressure safety valve 31 opens and can overflow through the pressure relief port 30. Ensure that the air pressure is balanced.

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 set value of the negative pressure safety valve 29, the external atmosphere can quickly enter the sealed compartment and destroy the back suction to ensure the air pressure balance. , To avoid washing water 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 17.

The drum washing machine of this embodiment includes a drive motor 16 and an inner drum shaft 13. The drive motor 16 is in a transmission connection with the inner drum 17 through the inner drum shaft 13 and drives the inner drum 17 to rotate. At least one of the holes 30 is opened on the inner cylinder shaft 13 to make the inside of the inner cylinder 17 communicate with the external environment. 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 the inner tub opening of the inner tub 17 is installed to seal the inner tub The inner cylinder door 6 of the outer cylinder 18 is open. One end of at least one of the pressure-increasing channel 28 and the pressure-relief channel 30 communicates with the inner cylinder 17, and the other end is arranged inside the outer cylinder 18 and the outer cylinder 18 intercommunicating.

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 tunnel section is arranged in parallel with the hollow passage. One end of the first tunnel section is connected to the inner cylinder 17, one end of the second tunnel section is connected with the other end of the first tunnel section, and the other end of the second tunnel section 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;

The second tunnel section is perpendicular to the first tunnel section to form an L-shaped pressure relief tunnel 30.

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.

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

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

In this embodiment, 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 passes through The through hole of the rotor communicates with the hollow channel 14 of the inner cylinder shaft 13.

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 of the inner cylinder shaft.

As shown in Figures 11 and 12, the pressurizing port 28 and the pressure relief port 30 are both provided on the inner cylinder shaft 13, and the openings of the pressurizing port 28 and the pressure relief port 30 to communicate with the atmosphere are both provided inside the outer cylinder 18; The openings of the pressure port 28 and the pressure relief port 30 communicating with the sealed compartment of the inner cylinder 17 are both arranged inside the hollow channel 14 of the inner cylinder shaft 13.

The pressure-increasing channel 28 and the pressure-relief channel 30 can both be arranged on the inner cylinder shaft 13, and the openings of the pressure-increasing channel 28 and the pressure-relief channel 30 that communicate with the atmosphere are both arranged inside the outer cylinder 18; the pressure-increasing channel 28 and the pressure relief channel The openings of the airtight compartment connected with the inner cylinder 17 of 30 are all arranged inside the airtight compartment.

Example five

As shown in Figures 13-17, 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 17 and the outer tube 18, so as to achieve the purpose of saving water, while avoiding the formation of dirt between the inner tube 17 and the outer tube 18. Wall cleaning improves user experience.

The inner tub 17 of the drum washing machine is provided with a drainage port 39, which drains water during the drainage and dehydration process.

This embodiment discloses a sealed drainage device suitable for the above-mentioned drum washing machine, including:

The centrifugal component is configured to move under the action of the centrifugal force of the rotation of the inner cylinder 17;

The blocking component is configured to block the drain port 39;

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 port 39.

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 39, thereby realizing drainage: in principle, using the working characteristics of the drum washing machine, through Drainage can be achieved by setting the rotation speed of the inner cylinder, 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 centrifugal drainage by controlling the rotation speed of the inner tub during drainage and dehydration. Therefore, the sealing and drainage problems of the drum washing machine with the non-porous inner tub are realized.

As an implementation of this embodiment, both the centrifugal component and the plugging component can reciprocate along the radial direction of the inner cylinder 17, and the plugging component is driven by the centrifugal component in the same direction as the centrifugal movement of the centrifugal component. Or vice versa.

Considering that the blocking component and the centrifugal component need more installation controls to move in the same direction, the centrifugal component can move away from the central axis of the inner cylinder along the radial direction of the inner cylinder 17 under the action of the centrifugal force of the inner cylinder 17 rotating. The plugging component is driven by the centrifugal component to move along the inner cylinder 17 radially close to the central axis of the inner cylinder 17, so that the plugging component and the centrifugal component move toward each other in the radial direction of the inner cylinder 17, reducing the difference between the two. The total movement stroke of the cylinder in the radial direction reduces the installation space.

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

The elastic member 43 of this embodiment generates an elastic pre-tightening force on the blocking member to keep the blocking member to block the drain port 39 and to keep the inner cylinder 17 closed to contain the washing water.

As shown in Figures 14 to 16, 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 manner, the sealing member and the drain port 39 are in direct sealing contact to seal the drain port 39. For example, the sealing member and the drain port 39 are in direct sealing contact with an electromagnetic seal or a rigid seal.

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 one embodiment, the blocking member has a sealing protrusion for circumferential contact and sealing, and the sealing protrusion on the blocking member maintains a seal with the outer peripheral inner cylinder wall of the drain port 39 or with the inner wall of the drain port 39 Touch to block the drain. By directly disposing the sealing protrusion on the plugging component, the plugging component directly seals the drain port 39.

In one embodiment, at least one of the inner wall of the drain port 39 and the outer peripheral inner cylinder wall has a sealing convex portion for circumferential contact and sealing, and the sealing convex portion at the drain port maintains sealing contact with the plugging member. Block the drain;

In one embodiment, the sealing member 40 has a sealing protrusion 41 for circumferential contact sealing, and the sealing protrusion 41 on the sealing member 40 is in sealing contact with at least one of the following components to block the drain 39 : Blocking parts and drain 39.

The sealing protrusion of this embodiment may be a sealing rib formed by partially protruding at least one of the following components: a blocking component, an inner wall of the drain port 39, an outer peripheral inner wall of the drain port 39, and a sealing member 40. Optionally, the sealing convex part of this embodiment may also be a convex part formed by a partial depression of at least one of the following components: a blocking component, an inner wall of the drain port 39, an outer peripheral inner cylinder wall of the drain port 39, and a seal 40.

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

The elastic member of this embodiment is a compression spring. The compression spring is sleeved on the guide portion 35. The housing 44 may also have an accommodation groove for accommodating the compression spring. The accommodation groove is sleeved on the periphery of the guide channel and one end of the compression spring The other end of the compression spring is stopped in the accommodating groove and abutted on the blocking portion 36.

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

The centrifugal component in this embodiment includes a counterweight 38 and a connecting piece 37. One end of the connecting piece 37 is connected with the counterweight 38, the other end of the connecting piece 37 is connected with a blocking component, and the middle of the connecting piece 37 has a rotatable installation. The shaft hole 42 on the shaft.

The counterweight 38 and the connecting member 37 may be 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:

The inner tube 17 is configured to hold washing water independently when washing clothes;

The drain 39 is opened on the inner tube 17 and is configured to discharge washing water;

The sealing drainage device is installed on the inner wall of the inner cylinder 17. The centrifugal movement of the centrifugal component is driven by the centrifugal force of the rotation of the inner cylinder 17 to drive the blocking component to open the drainage port 39.

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 17, the elastic pre-tightening force F0 of the elastic member 43 and the The overall quality m accords with:

When the rotation speed V of the inner cylinder 17 reaches the set value V0, the centrifugal component starts to move centrifugal under the action of the centrifugal force of the inner cylinder 17, and the centrifugal force generated by the centrifugal component overcomes the elastic pre-tightening force F0 and the centrifugal force of the blocking member to drive the blocking The member moves in the radial direction of the inner cylinder 17 and close to the central axis of the inner cylinder to open the drain 39.

A clothes lifting device is installed on the inner wall of the inner tube 17. The clothes lifting device has an inner chamber and a communication hole connecting the inner chamber and the inner tube. The drain 39 is opened in the inner tube inside the inner chamber. On the cylinder wall, the sealed drainage device is arranged in the internal 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.

As shown in FIG. 17, 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 32 is provided for assembly and fastening. The screw column 55 of the screw 45 is provided with a through hole 56 for fastening the screw 45 to pass through on the wall of the inner cylinder.

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

During the drainage or dehydration process of the washing machine, the rotation speed V of the inner tub 17 is controlled to satisfy V≥V0, and the centrifugal component moves under the centrifugal force of the rotation of the inner tub 17 to drive the blocking component to open the drain 39;

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.

Example Six

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 member is in sealing contact with the drain port 39 and is configured to block the drain port 39.

In the sealed drainage device of the present application, the drainage port 39 is blocked by the plugging member, so that the drum washing machine with the non-porous inner tub keeps the drainage port 39 closed during washing and rinsing, and the non-porous inner tub can independently contain water.

The blocking 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 member 40 provided on the plugging portion 36, and the sealing member 40 of the plugging member is in sealing contact with the drain port 39 to block the drain port 39.

The blocking component may also include at least one of the following:

The sealing member has a sealing protrusion 41 for circumferential contact and sealing, and the sealing protrusion 41 on the sealing member maintains sealing contact with the outer circumferential inner cylinder wall or the inner wall of the drainage port 39 to block the drainage port;

And, the sealing member 40 has a sealing protrusion 41 for circumferential contact sealing, and the sealing protrusion 41 on the sealing member 40 is in sealing contact with the outer circumferential 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 on the sealing member or the sealing member 40 and the outer peripheral inner cylinder wall of the drain 39, the inner cylinder 17 described in this embodiment has a flat portion 57 with a flat inner wall surface. The drainage port 39 is opened on the flat portion 57, and the sealing convex portion 41 on the blocking member or the sealing member 40 and the flat portion 57 on the outer periphery of the drainage port 39 maintain circumferential sealing contact to block the drainage port.

As another implementation of this embodiment, the drainage port 39 is opened on the arc-shaped wall of the inner cylinder, and the sealing protrusion 41 on the blocking member or the sealing member 40 and the circular arc on the outer periphery of the drainage port 39 The inner surface of the shaped wall maintains circumferential sealing contact to block the drain.

The sealing protrusion 41 on the sealing member or the sealing member 40 of this embodiment includes at least one ring of sealing ribs arranged on the sealing member or the sealing member 40, and each sealing rib is kept around the inner surface of the arc-shaped wall. To seal contact.

The sealing protrusion 41 on the sealing member or sealing member 40 includes at least two sealing ribs arranged on the sealing member or sealing member 40.

The height of each ring of sealing ribs is 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 is gradually increased from the outer ring to the inner ring, so that each ring of sealing ribs and the inner surface of the arc-shaped wall opposite to each ring of sealing ribs maintain 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.

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 described in this embodiment is a sealing plug body made of an elastic material. The sealing plug body has an opening installation chamber for assembling the plugging component; the sealing plug body has a connection with a drain port 39 The inner cylinder flat part 57 on the outer circumference cooperates with the sealing end face for sealing;

At least one ring of sealing ribs is arranged on the sealing end surface.

The sealed drainage device described in this embodiment also includes a centrifugal component, which 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 port 39.

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

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

The inner tube 17 is configured to hold washing water independently when washing clothes;

The drain 39 is opened on the inner tube 17 and is configured to discharge washing water;

The sealing drainage device is installed on the inner wall of the inner cylinder 17. When the rotation speed of the inner cylinder 17 reaches the set value V0, the blocking member opens the drainage port 39.

In one embodiment, there is an extension wall 48 between the drain port 39 and the inner wall of the inner cylinder 17, so that the drain port protrudes from the inner wall of the inner cylinder 17, and the plugging member extends into The inner wall of the extension wall 48 maintains circumferential sealing contact with the inner wall of the extension wall 48 to block the drain port, which further increases the sealing effect between the plugging member and the drain port 39.

In one embodiment, 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 39 or the inner wall of the drain port. To block the drain.

Example 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 blocking member is in sealing contact with the drain port 39 and is configured to block the drain port 39.

The plugging component is provided with a plurality of first sealing components 47 with unequal cross-sectional areas along the central axis, and the outer peripheral wall of at least one cross-section is configured to be in circumferential sealing contact with the drain port 39 to block the drain port. 39.

In this embodiment, the sealing member of the drainage device has a first sealing member 47 with a variable cross-section, so that the first sealing member 47 can better circumferentially seal the drainage port 39 and ensure the sealing effect of the drainage port.

As an implementation of this embodiment, the first sealing member 47 includes a proximal end portion disposed close to the drain port 39 and a distal end portion disposed away from the drain port 39. The cross-sectional area of the central axis of the sealing member 47 gradually increases from the proximal end to the distal end.

The first sealing member 47 may be a conical or truncated cone-shaped sealing plug whose cross-sectional area gradually increases from the proximal end to the distal end.

As an implementation of this embodiment, the inner cylinder 17 has a flat portion 57 with a flat inner wall surface, the drain 39 is opened on the flat portion 57, and at least one horizontal portion of the first sealing member 47 The outer peripheral wall of the section 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 17, and the outer peripheral inner cylinder wall of at least one cross section of the first sealing member 47 is in circumferential sealing contact with the drainage port 39 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 first sealing component is in sealed contact with the drain port to ensure the second re-seal.

As an implementation of this embodiment, the second sealing member includes a sealing protrusion 41 arranged on the outer periphery of the first sealing member 47 and configured to contact and seal, and the sealing protrusion 41 on the second sealing member and the drain port The inner cylinder wall of the outer circumference of 39 maintains sealing contact to block the drain port 39.

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 member 47 and the second sealing member are respectively made of elastic materials, and the first sealing member and the second sealing member are connected as one body and then assembled on the blocking member;

Alternatively, the first sealing component 47 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 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 17; the centrifugal component is connected to the blocking component, and the centrifugal movement of the centrifugal component drives the blocking component to open the drain 39 .

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 port 39, and a plugging portion 36 provided at the other end of the guide portion 35. The connecting portion 34 connecting the centrifugal component; the first sealing component or the second sealing component is arranged on the blocking portion.

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

The inner tube 17 is configured to hold washing water independently when washing clothes;

The drain 39 is opened on the inner tube 17 and is configured to discharge washing water;

The sealing drainage device is installed on the inner wall of the inner cylinder 17, and when the rotation speed of the inner cylinder 17 reaches the set value V0, the blocking member opens the drainage port 39.

The drain port 39 has an extension wall 48 extending from the inner wall of the inner cylinder 17 so that the drain port protrudes inside or outside the cylinder wall of the inner cylinder 17, and the first sealing member 47 extends into the extension wall 48 Inside, the outer peripheral wall of at least one cross section of the first sealing member 47 maintains circumferential sealing contact with the inner peripheral wall of the extension wall 48 to block the drain port 39.

In order to further improve the sealing effect of the first sealing member 47, the first sealing member 47 is in contact with or in line contact with the inner peripheral wall surface of the extension wall 48 of the drain port 39 and seals the drain port 39.

The shape of the inner peripheral wall of the extension wall 48 and the outer peripheral wall of the first sealing member 47 can be matched.

The first sealing member 47 is a conical or truncated cone-shaped sealing plug whose cross-sectional area gradually increases from the proximal end to the distal end of the drainage port, and the extension wall 48 of the drainage port is the internal cross-sectional area along the A truncated cone-shaped peripheral wall gradually decreases from the inner cylinder wall to the direction away from the central axis of the inner cylinder.

Example eight

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

The inner tube 17 is configured to hold washing water independently when washing clothes;

The drain 39 is opened on the inner tube 17 and is configured to discharge washing water;

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

The installation member drainage port 51 is opened on the installation member 50, and the installation member drainage port 51 communicates with the drainage port 39;

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

The mounting member 50 described in this embodiment is sealed to the inner cylinder wall.

The drainage port 39 is opened on the inner wall of the inner cylinder 17, and the mounting member 50 includes a mounting member connecting portion, and the mounting member connecting portion is sealed to the inner cylinder wall on the outer periphery of the drain port 39.

The mounting member 50 of this embodiment further includes an end cover part, two opposite side walls of the flat part are kept in a sealed connection with the inner wall of the inner cylinder 17, and the other two opposite side walls of the flat part are respectively connected to the end cover parts, The end cap is kept in a sealed connection with the inner wall 17 of the inner cylinder.

The flat part and the end cover part can be integrally formed.

In this embodiment, the mounting member 50 is installed on the inner wall of the inner cylinder, and the mounting member 50 has a mounting member drain port 51 communicating with the drain port 39. The drain port 39 can be sealed by blocking the mounting member drain port 51 by a sealing drain device. Without changing the arc-shaped wall structure of the relevant inner cylinder, the sealing assembly of the sealing drainage device is realized by the mounting member 50. The mounting structure is simple, and because the mounting member 50 has a flat part that is sealed and matched with the blocking component, the sealing effect is better.

The drainage port 39 of the inner cylinder 17 is opened on the arc-shaped wall of the inner cylinder 17, and the mounting member 50 includes a connecting portion, and the connecting portion is connected to the inner cylinder wall of the outer periphery of the drainage port 39 in a sealed manner.

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 and the arc-shaped inner wall of the inner cylinder are kept in a sealed connection. The other two of the flat plate are opposite to each other. The side walls are respectively connected with end cover plates, and the end cover plates are kept in a sealed connection with the arc-shaped inner wall of the inner cylinder.

The straight plate and the end cover plate can be 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 17 to achieve a sealed connection, or the mounting member 50 and The inner wall of the inner cylinder is welded.

The cross-sectional area of the water outlet 39 in this embodiment is greater than or equal to the cross-sectional area of the water outlet 51 of the mounting member; in this way, the water discharged from the water outlet 51 of the mounting member can be discharged from the water outlet 39 in time to ensure smooth drainage.

The water outlet 39 and the installation member outlet 51 are both circular holes, and the diameter of the outlet 39 is greater than or equal to the diameter of the installation member outlet 51.

The central axis of the drain 39 and the central axis of the drain 51 of the mounting member are arranged collinearly. In this way, the water discharged from the drain 51 of the mounting member can be discharged directly to the drain 39 to avoid the drain 51 from the mounting member. The outflow path of the drainage port 39 is deflected, 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.

The sealing mating portion 54 is at least one ring of sealing ribs arranged on the outer periphery of the drainage port 51 of the mounting member, and the sealing ribs are in sealing contact with the sealing surface of the blocking component.

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 from the inside or outside of the flat portion, and the blocking member is provided with a first sealing member 47. A sealing member 47 extends into the extension wall 53 of the mounting member, and at least one outer peripheral wall of the cross section is kept in sealing contact with the inner peripheral wall of the extension wall 53 of the mounting member.

The first sealing member 47 is in contact with or in line contact with the inner peripheral wall surface of the extension wall 53 of the mounting member to seal the drainage port 51 of the mounting member.

The shape of the inner peripheral wall of the extension wall 53 of the mounting member and the outer peripheral wall of the first sealing member 47 may match.

The first sealing member 47 is a conical or truncated cone-shaped sealing plug whose cross-sectional area gradually increases from the proximal end to the distal end of the drainage port 51 of the mounting member, and the extension wall 53 of the mounting member is the inner A truncated cone-shaped peripheral wall whose cross-sectional area gradually decreases along the flat part away from the central axis of the inner cylinder.

The inner wall of the inner tube 17 is provided with a clothes lifting device. The clothes lifting device has an inner chamber and a communication hole 33 connecting the inner chamber and the inner tube. The drain 39 is opened in the inner chamber. On the wall of the barrel, the mounting member 50 and the sealing drainage device are all arranged in the internal cavity.

The lifting device described in this embodiment is a lifting rib 32. The lifting rib 32 has a lifting rib base 58 installed on the inner wall of the inner cylinder and a lifting rib convex portion 49 protruding into the inner cylinder 17. The communicating hole 33 The mounting member 50 is arranged on the raised portion 49 of the lifting rib, and the mounting member 50 is connected to the lifting rib base 58 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 17; 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 51.

Example 9

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

The inner tube 17 is configured to hold 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 member drainage port 51 is opened on the installation member 50;

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

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

The assembly through opening is opened on the cylinder wall of the inner cylinder 17, and the mounting member 50 includes a connecting part, and the connecting part is sealed to the inner peripheral wall of the assembly through opening.

The mounting member 50 in this embodiment includes a flat portion, and the mounting member drainage port 51 is opened on the flat portion.

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.

The sealing mating portion 54 is at least one ring of sealing ribs arranged on the outer circumference of the drainage port 51 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 includes at least one of the following structures:

The plugging component has at least one ring of sealing ribs, and at least one ring of sealing ribs maintains sealing contact with the flat part of the outer periphery of the drainage port 51 of the mounting member;

And, the sealing member is provided with a sealing member, the sealing member has at least one ring of sealing ribs, and at least one ring of sealing ribs maintains sealing contact with the outer wall surface of the flat part of the outer periphery of the drainage port 51 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 flat part located on the outer periphery of the drainage port 51 of the mounting member; the sealing member is provided with a sealing member, and the sealing member has At least one circle of second sealing ribs; the first sealing ribs and the second sealing ribs are arranged staggeredly, the first sealing ribs are in sealing contact with the flat end surface of the sealing element, and the second sealing ribs are flat with the outer periphery of the drainage port of the mounting member The flat part keeps sealed contact.

In order to further increase the sealing effect of the plugging component on the drainage port of the mounting member, there is a mounting member extension wall 53 between the mounting member drainage port 51 and the flat portion, so that the mounting member drainage port 51 protrudes from the inside or from outside. Part, the plugging 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-section of the outer peripheral wall of the first sealing member 47 and the mounting member extension wall 53 The inner peripheral wall maintains circumferential sealing contact.

In one embodiment, the first sealing member 47 is in contact with or in line contact with the inner peripheral wall surface of the extension wall 53 of the mounting member to seal the drainage port of the mounting member;

In an embodiment, the shape of the inner peripheral wall of the extension wall 53 of the mounting member and the outer peripheral wall of the first sealing member 47 may match;

In one embodiment, the first sealing member 47 is a tapered sealing plug whose cross-sectional area gradually increases from the proximal end to the distal end of the drainage port 51 of the mounting member, and the mounting member extends The wall 53 is a circular truncated cone peripheral wall 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 that communicates the internal chamber with the inner cylinder, and the assembly port 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.

The centrifugal component includes a weight 38 and a connecting piece 37. One end of the connecting piece 37 is connected to the weight 38, the other end of the connecting piece 37 is connected to the blocking component, and the middle of the connecting piece 37 is rotatably mounted on the rotating shaft.的轴孔42。 The shaft hole 42.

The counterweight 38 and the connecting member 37 may be 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 present application provides a front-opening drum washing machine with a non-porous inner tub, which has a simple structure and can eliminate the need to fill washing/rinsing water between the inner tub and the outer tub, thereby greatly reducing 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.

In this application, a flow sensor 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 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 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口, from which drainage is performed during drainage or dehydration.

The sealed drainage device of the present application blocks the drainage port through the plugging component, so that the drum washing machine with the non-porous inner tub keeps the drainage port closed during washing and rinsing, and realizes the independent water storage of the non-porous inner tub.

Claims (15)

1. A sealed drainage device of a drum washing machine, the drum washing machine includes an inner tub that independently holds washing water when washing clothes, a drainage port is provided on the inner tub, and the sealed drainage device includes:

   The blocking member is in sealing contact with the drain port, and the blocking member is configured to block the drain port.
2. The sealed drainage device according to claim 1, wherein the blocking member is in direct sealing contact with the drain to block the drain; or the blocking member includes a blocking part and The seal on the plugging part, and the seal of the plugging component is in sealing contact with the drain port to block the drain port.
3. The sealing drainage device according to claim 2, wherein the sealing member has a sealing protrusion for circumferential contact and sealing, and the sealing protrusion on the sealing member and the outer peripheral inner cylinder wall of the drainage port Or maintain sealing contact with the inner wall of the drain port to block the drain port.
4. The sealing drainage device according to claim 2, wherein the sealing member has a sealing convex portion for circumferential contact sealing, and the sealing convex portion on the sealing member is connected with the outer circumferential inner cylinder wall of the drainage port or with The inner wall of the drain port is in sealing contact to block the drain port.
5. The sealed drainage device according to claim 3 or 4, wherein the inner cylinder has a flat part with a flat inner wall surface, the drain opening is provided on the flat part, and the blocking member or the sealing member The sealing convex portion of the drain port is kept in circumferential sealing contact with the flat portion of the outer periphery of the drain port to block the drain port.
6. The sealed drainage device according to claim 3 or 4, wherein the drainage port is opened on the arc-shaped wall of the inner cylinder, and the sealing protrusion on the sealing member or the sealing member is in contact with the The inner surface of the arc-shaped wall on the outer periphery of the drain port maintains circumferential sealing contact to block the drain port.
7. The sealed drainage device according to claim 6, wherein the sealing protrusion on the sealing member or the sealing member includes at least one ring of sealing ribs provided on the sealing member or the sealing member, so The at least one ring of sealing ribs is kept in circumferential sealing contact with the inner surface of the arc-shaped wall.
8. The sealed drainage device according to claim 7, wherein the sealing protrusion on the sealing member or the sealing member comprises at least two sealing ribs arranged on the sealing member or the sealing member;

   The heights of the at least two rings of sealing ribs are equal, and both are 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 at least two rings of sealing ribs is gradually increased from the outer ring to the inner ring, so that each ring of sealing ribs and the inner surface of the arc-shaped wall opposite to each ring of sealing ribs maintain circumferential sealing contact .
9. The sealed drainage device according to any one of claims 3 to 8, wherein the sealing protrusion on the sealing member or the sealing member is a sealing rib, and the sealing rib includes the sealing rib main part, which is used to maintain and The sealing rib end part that the peripheral wall of the outer periphery of the drainage port is in sealing contact with and the sealing rib transition part that transitionally connects the sealing rib main part and the sealing rib end part.
10. 8. The sealing drainage device according to claim 9, wherein the transition portion of the sealing rib is a rounded structure between the end of the sealing rib and the body of the sealing rib.
11. The sealed drainage device according to claim 5, wherein the sealing member is a sealing plug body made of elastic material, the sealing plug body has an opening installation chamber, and the installation chamber is configured to be assembled The sealing plug body of the blocking portion has a sealing end surface, and the sealing end surface cooperates with the flat portion of the inner cylinder on the outer periphery of the drain port for sealing.
12. The sealing drainage device according to claim 11, wherein at least one ring of sealing ribs is provided on the sealing end surface.
13. The sealed drainage device according to any one of claims 1-12, further comprising a centrifugal component configured to move 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 component The centrifugal movement drives the blocking component to open the drain;

    The sealed drainage device further includes a housing with a guide channel inside; the blocking member includes a guide part arranged in the guide channel reciprocatingly, and one end of the guide part is arranged to block the A plugging part of the drainage port and a connecting part provided at the other end of the guide part for connecting the centrifugal component.
14. A drum washing machine, including:

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

    The drain is opened on the inner cylinder and is configured to discharge washing water;

    The sealed drainage device according to any one of claims 1 to 13, wherein the sealed drainage device is installed on the inner wall of the inner cylinder and is configured to open the blocking member when the rotation speed of the inner cylinder reaches the set value V0 The drain.
15. The drum washing machine according to claim 14, wherein there is an extension wall between the drain port and the inner wall of the inner tub, so that the drain port protrudes from the inner tub wall, and the blocking The component extends into the extension wall to maintain circumferential sealing contact with the inner wall of the extension wall to block the drain;

    Alternatively, the drainage port is flush with the inner wall of the inner cylinder, and the blocking member is in circumferential sealing contact with the inner cylinder wall of the outer periphery of the drainage port or in sealing contact with the inner peripheral wall of the drainage port to Block the drain.

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