CN111691114B

CN111691114B - Sealing drainage device of drum washing machine and drum washing machine

Info

Publication number: CN111691114B
Application number: CN201910189956.3A
Authority: CN
Inventors: 吕佩师; 许升; 赵志强
Original assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-03-13
Filing date: 2019-03-13
Publication date: 2023-02-17
Anticipated expiration: 2039-03-13
Also published as: JP2022525104A; WO2020182210A1; CN111691114A

Abstract

The invention provides a sealed drainage device of a drum washing machine and the drum washing machine, the drum washing machine comprises an inner drum which independently holds washing water when washing clothes, a drainage outlet is arranged on the inner drum, the sealed drainage device comprises: the plugging component is in sealing contact with the water outlet and is used for plugging the water outlet; the blocking component is provided with first sealing components with unequal cross-sectional areas of all cross sections along the central axis, and the peripheral wall of at least one cross section is used for being in circumferential sealing contact with the water outlet to block the water outlet. The plugging part of the sealed drainage device is provided with the first sealing part with the variable cross section, so that the first sealing part can be better sealed with the drainage port in the circumferential direction, and the sealing effect of the drainage port is ensured.

Description

Sealing drainage device of drum washing machine and drum washing machine

Technical Field

The invention relates to the technical field of washing equipment, in particular to a sealing drainage device of a drum washing machine and the drum washing machine.

Background

The washing machine is used as a household appliance which is widely used in daily life of people, helps people get rid of the trouble of washing clothes, and brings great convenience to people. However, the washing machine has certain disadvantages, such as long time consumption, large water consumption, etc., and with the development of society, water resources become more and more important as an important natural resource, and the awareness of water saving of people is also improved, and how to realize the water saving function of the washing machine is very important.

In order to solve the water-saving problem of the washing machine, some patents are also provided, for example, patent number 201410215346.3, named as a Chinese invention patent of a drum washing machine, and the invention relates to a drum washing machine, which comprises a box body, wherein an inner cylinder and an outer cylinder are arranged in the box body, a door seal is arranged between the outer cylinder and the box body, the inner cylinder is connected with a driving device, the inner cylinder is a non-porous inner cylinder, the inner cylinder is a conical cylinder with a small diameter at the cylinder bottom and a large diameter at the cylinder opening, the cylinder opening of the inner cylinder is inwards folded in an arc shape, a water inlet conduit is arranged on the door seal, one end of the water inlet conduit is connected with a washing water rapid heating device, the other end of the water inlet conduit penetrates through the door seal and extends into the inner cylinder, and a water outlet and a water pressure detection device are arranged on the outer cylinder. According to the technical scheme, the inner cylinder is a non-porous inner cylinder, water is fed into the inner cylinder through the water inlet guide pipe arranged on the door seal, and water is drained in the dehydration process through the shape of the inner cylinder, so that water can be prevented from being stored between the inner cylinder and the outer cylinder, and the water consumption for washing is greatly saved.

Said invention provides a drum washing machine with holeless inner drum, but only the inner drum of existent drum washing machine is designed into the holeless structure, so that its practical significance is very small. Because the clothes need to be soaked by certain washing water, if the soaking effect is to be realized, a certain amount of water needs to be stored in the imperforate inner cylinder, so that the load of the motor is increased, and the problems of power consumption and the like are also solved. In addition, the drum washing machine disclosed in the patent adopts a water inlet mode through a door seal, the door seal mainly has the effect of sealing the opening of the outer drum of the washing machine, a water inlet guide pipe is arranged on the door seal, the sealing effect of the door seal is easily influenced, the realization is difficult, and the detection of the water level of the water inlet in the inner drum cannot be realized.

In addition, aiming at the drum washing machine with the imperforate inner drum, the key of keeping the sealing of the water outlet on the inner drum is to realize that no water exists between the inner drum and the outer drum, and the prior art has a scheme that a sealing element is arranged on the water outlet and the water outlet is sealed and sealed by a moving part and the sealing element.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

In order to solve the above problems, a first aspect of the present invention is to provide a sealing drainage device for a drum washing machine, and specifically, the following technical solutions are adopted:

a kind of drum type washing machine's sealed drainage device, the drum type washing machine includes the inner cylinder which holds the washing water independently when washing the clothes, offer the outlet on the inner cylinder, the sealed drainage device includes:

the plugging component is in sealing contact with the water outlet and is used for plugging the water outlet;

the blocking component is provided with first sealing components with unequal cross-sectional areas of all cross sections along the central axis, and the peripheral wall of at least one cross section is used for being in circumferential sealing contact with the water outlet to block the water outlet.

Further, the first sealing part comprises a proximal part and a distal part, wherein the proximal part is arranged close to the water discharge opening, the distal part is arranged far away from the water discharge opening, and the cross section area of each cross section of the first sealing part is gradually increased from the proximal part to the distal part along the central axis;

preferably, the first sealing member is a tapered or truncated cone shaped sealing plug having a cross-sectional area gradually increasing from the proximal portion to the distal portion.

Further, the inner cylinder is provided with a flat part with a flat inner wall surface, the water outlet is formed in the flat part, and the peripheral wall of at least one cross section of the first sealing part is in circumferential sealing contact with the water outlet to seal and block the water outlet;

or the water outlet is formed in the circular arc-shaped wall of the inner cylinder, and the peripheral wall of at least one cross section of the first sealing part is in circumferential sealing contact with the water outlet to seal the water outlet.

Furthermore, the blocking component is also provided with a second sealing component positioned on the periphery of the first sealing component, and the second sealing component is in circumferential sealing contact with the outer periphery inner cylinder wall of the water outlet.

Further, the second sealing component comprises a sealing convex part which is arranged on the periphery of the first sealing component and is used for contact sealing, and the sealing convex part is kept in sealing contact with the flat part of the outer periphery inner cylinder wall of the water outlet so as to seal the water outlet.

Further, the first sealing part and the second sealing part are respectively made of elastic materials and are respectively assembled on the plugging part;

or 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 into a whole and then assembled on the plugging component;

or the first sealing component and the second sealing component are sealing plug bodies integrally made of elastic materials, and the sealing plug bodies are assembled on the blocking component.

Further, the centrifugal part moves under the action of centrifugal force generated by rotation of the inner barrel; the centrifugal part is connected with the plugging part, and the centrifugal part centrifugally moves to drive the plugging part to open the water outlet;

the plugging component comprises a guide part which can reciprocate and is arranged in the guide channel, a plugging part which is arranged at one end of the guide part and is used for plugging the water outlet, and a connecting part which is arranged at the other end of the guide part and is used for connecting the centrifugal component; the first sealing component/the second sealing component are arranged on the plugging part.

The second purpose of the present invention is to provide a drum washing machine, specifically, the following technical solutions are adopted:

a drum washing machine having the sealed drain device, comprising:

an inner tub for independently containing washing water when washing clothes;

a water outlet arranged on the inner cylinder for discharging the washing water;

and the sealing drainage device is arranged on the inner wall of the inner cylinder, and the water outlet is opened by the plugging part when the rotating speed of the inner cylinder reaches a set value V0.

Furthermore, the water outlet is provided with an extension wall extending between the water outlet and the inner wall of the inner barrel, so that the water outlet protrudes out of the wall of the inner barrel, the first sealing part extends into the extension wall, and the peripheral wall of at least one cross section and the inner peripheral wall of the extension wall are in circumferential sealing contact to seal the water outlet.

Further, the first sealing part is in surface contact or line contact with the inner peripheral wall of the extension wall of the water discharge opening and seals the water discharge opening;

preferably, the first sealing member is a tapered or truncated cone shaped sealing plug having a cross-sectional area gradually increasing from a proximal end portion to a distal end portion with respect to the drain port, and the extension wall of the drain port is a truncated cone shaped peripheral wall having an inner cross-sectional area gradually decreasing from the inner cylindrical wall toward a direction away from the central axis of the inner cylindrical wall.

The sealed drainage device disclosed by the invention utilizes the centrifugal force generated by the rotation of the inner cylinder to drive the centrifugal part to carry out centrifugal motion, and the centrifugal part drives the plugging part to move to open the drainage outlet, so that drainage is realized: in principle, the water can be drained by setting the rotating speed of the inner drum by utilizing the working characteristics of the drum washing machine, and the water drainage is easy to realize; structurally, the plugging component is opened by means of centrifugal movement of the centrifugal component, so that water drainage is realized, and the structure is simple.

The plugging part of the sealed drainage device is provided with the first sealing part with the variable cross section, so that the first sealing part can be better sealed with the drainage port in the circumferential direction, and the sealing effect of the drainage port is ensured.

Drawings

FIG. 1 is a schematic view of a drum washing machine according to an embodiment of the present invention;

FIG. 2 is a schematic view of a second drum washing machine according to an embodiment of the present invention (embodiment one);

FIG. 3 is a schematic view of a drum washing machine according to a second embodiment of the present invention (second embodiment);

FIG. 4 is a schematic view of a drum washing machine according to an embodiment of the present invention (embodiment III);

FIG. 5 is a schematic view of a three-drum washing machine according to an embodiment of the present invention;

FIG. 6 is a partially enlarged view (pressure relief state) of FIG. 5 of a three-drum washing machine according to an embodiment of the present invention; (ii) a

FIG. 7 is a partially enlarged view (pressurized state) of FIG. 5 of the three-drum washing machine according to the embodiment of the present invention;

FIG. 8 is a schematic view of a four-drum washing machine according to an embodiment of the present invention;

FIG. 9 is an enlarged view of a portion of FIG. 8 of a four-drum washing machine according to an embodiment of the present invention (in a pressure-released state in the first embodiment);

FIG. 10 is an enlarged view of a portion of FIG. 8 of a four-drum washing machine according to an embodiment of the present invention (pressurized state in the first embodiment);

FIG. 11 is an enlarged view of a portion of FIG. 8 of a four-drum washing machine according to an embodiment of the present invention (in a pressure-released state in the second embodiment);

FIG. 12 is an enlarged view of a portion of FIG. 8 of a four-drum washing machine according to an embodiment of the present invention (pressurized state in the second embodiment);

FIG. 13 is a schematic diagram of a fifth to ninth drum washing machine according to an embodiment of the present invention;

FIG. 14 is a schematic view showing the operation of the fifth and sixth sealing drainage devices of the embodiment of the present invention mounted on a drum washing machine;

FIG. 15 is an enlarged partial view of FIG. 14 of a fifth and sixth seal displacement apparatus in accordance with an embodiment of the present invention;

FIG. 16 is an enlarged partial view of the alternate embodiment of the drain of FIG. 14 according to the fifth and sixth embodiments of the present invention;

FIG. 17 is an exploded view of a fifth and sixth sealing drain of an embodiment of the present invention;

FIG. 18 is a schematic view of an exemplary embodiment of a seventh sealed water discharge device of the present invention installed in a drum washing machine;

FIG. 19 is an enlarged partial view of FIG. 18 of a seventh seal displacement apparatus according to an embodiment of the present invention;

FIG. 20 is an enlarged, fragmentary view of the alternate embodiment of FIG. 18 of the example seven seal drain of the present invention;

FIG. 21 is an assembly view of a seventh embodiment of the present invention with a lifting rib of a drum washing machine;

FIG. 22 is a schematic view of an inner drum structure assembled with a sealing drainage device and lifting ribs of a seven-drum washing machine according to an embodiment of the present invention;

FIG. 23 is a schematic view of an eighth embodiment of the present invention mounted on a drum type washing machine;

FIG. 24 is a schematic view illustrating an operation of an eighth embodiment of the eight-seal drainage apparatus of the embodiment of the present invention in a drum washing machine;

FIG. 25 is an enlarged partial view of FIGS. 23 and 24 of an eight seal drain of an embodiment of the present invention;

FIG. 26 is a schematic view of the nine-seal water discharge device of the embodiment of the present invention installed in a drum washing machine;

FIG. 27 is an enlarged partial view of FIG. 26 of a nine seal drain of an embodiment of the present invention.

Detailed Description

The sealing and draining device of the drum washing machine and the drum washing machine of the present invention are described in detail below with reference to the accompanying drawings:

as shown in fig. 1 to 27, the present embodiment provides a drum washing machine with a non-porous inner drum front opening structure, which has a simple structure, and can greatly reduce the amount of washing water of the washing machine without filling washing/rinsing water between the inner drum and the outer drum. The possibility of dirt adhesion between the inner cylinder and the outer cylinder is avoided. The user health and user experience are greatly improved, and water resources are greatly saved.

The drum washing machine of the present embodiment has a housing 19, and the housing 19 includes: a top deck 2, a front panel, a back panel and a bottom panel. The bottom plate is provided with feet 9 for supporting the whole washing machine. The outer casing 19 has an outer cylinder 18 inside, and an inner cylinder 17 is coaxially disposed inside the outer cylinder 18. The outer cylinder 18 is mainly used for collecting the drainage of the inner cylinder 17 and the drainage of the inner cylinder 17 by high-speed centrifugal dehydration. The drum 17 rotates, preferably with lifting ribs 43, and is continuously lifted and dropped to beat the laundry, so as to wash the laundry. The inner barrel 17 is of non-porous construction. The outer cylinder 18 has a central mounting hole to which the bearing 12 is fixedly mounted. An inner drum shaft 13, which is fixedly connected to the inner drum 17, passes through the bearing 12 shown and is connected to a drive motor 16. An openable/closable inner cylinder door 6 is installed on a front cylinder opening of the inner cylinder 17, thereby realizing that the inner cylinder 17 is of a sealed cabin structure.

The housing 19 of this embodiment is provided with an openable/closable door 5.

Example one

The embodiment mainly solves the problem of how to accurately determine the water inflow of the drum washing machine with the non-porous inner drum, and the specific scheme is as follows:

a drum washing machine comprises an inner drum 17 and a water inlet pipeline communicated with the inner drum 17, wherein the inner drum 17 is a non-porous inner drum and is used for containing washing water when clothes are washed, and a flow sensor 1 used for detecting the flow of the inlet water is arranged on the water inlet pipeline.

In the embodiment, the flow sensor 1 is arranged on the water inlet pipeline to monitor the flow of inlet water, and when the set water inflow is reached, the water inlet valve 20 is closed to finish water inlet. The embodiment adopts the flow sensor to solve the problem of water inlet of the drum washing machine with the non-porous inner drum according to the set water level, ensures the washing effect, has simple structure and is convenient to control.

Further, the drum washing machine of the embodiment includes a water inlet valve 20 and a detergent box 3, the water inlet pipeline includes a first water inlet pipe and a second water inlet pipe, the outlet end of the water inlet valve 20 is communicated with the detergent box 3 through the first water inlet pipe, the outlet end of the detergent box 3 is communicated with the inner barrel 17 through the second water inlet pipe, and the flow sensor 1 is arranged on the first water inlet pipe or the second water inlet pipe.

Preferably, the flow sensor 1 is disposed 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 the embodiment comprises a main controller 4, and the flow sensor 1 is electrically connected with the main controller 4 through a line. The main controller 4 can collect the water inflow of the inner barrel 17 in real time to reach the set water inflow, and the water inlet valve 20 is closed.

As an implementation manner 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.

In this embodiment, the flow sensor 1 may be disposed at any position on the water inlet pipeline, preferably, at the rear portion of the water inlet valve 20, and precisely measures the water flow entering the sealed inner cylinder 17, the flow sensor 1 is connected to the main controller 4 through a line, and the main controller 4 may collect the water inflow of the inner cylinder 17 in real time to set the water inflow and close the water inlet valve 20.

In order to realize water inlet into the imperforate inner barrel, the drum washing machine of the embodiment comprises a driving motor 16 and an inner barrel shaft 13, wherein the driving motor 16 is in transmission connection with the inner barrel 17 through the inner barrel shaft 13 to drive the inner barrel 17 to rotate, a hollow channel 14 communicated with the inside of the inner barrel 17 is arranged in the inner barrel shaft 13, and a water inlet pipeline is communicated with the hollow channel of the inner barrel shaft 13.

Specifically, the inner cylinder shaft 13 is connected with a driving motor 16, the driving motor 16 comprises a stator and a rotor, and the rotor is fixedly connected with the inner cylinder shaft 13; the center of the rotor is provided with a through hole, and the water inlet pipeline penetrates through the through hole of the rotor and is communicated with the hollow channel 14 of the inner cylinder shaft 13.

Furthermore, a first dynamic sealing structure 15 is arranged between the water inlet pipeline and the through hole of the rotor, and a second sealing structure is arranged between the through hole of the rotor and the hollow channel 14 of the inner cylinder shaft 13.

In order to realize the drainage of the imperforate inner cylinder, the drum washing machine of the embodiment comprises an outer cylinder 18, wherein an inner cylinder drainage hole is formed in the side wall of the inner cylinder 17, a normally closed one-way valve plug 11 is installed on the inner cylinder drainage hole, and a push rod mechanism 10 for pushing the one-way valve plug 11 open to drain water is installed on the outer cylinder 18.

Preferably, a locking mechanism for locking the rotation of the inner cylinder 17 is further disposed on the outer cylinder 18, and the push rod mechanism 10 pushes the one-way valve plug 11 open for water drainage after the inner cylinder is locked by the locking mechanism.

In order to realize the dehydration of the non-porous inner cylinder, a plurality of dehydration holes are formed in the side wall of the inner cylinder 17, centrifugal valves are installed on the dehydration holes, and the centrifugal valves are opened under the action of dehydration centrifugal force to perform dehydration and drainage.

The present embodiment also provides a control method for the drum washing machine, in which the washing machine executes a washing/rinsing procedure, the flow sensor detects a water inlet flow value in real time during a water inlet process, the washing machine calculates a water inlet flow according to the water inlet flow value and the water inlet time, and stops water inlet when the water inlet flow reaches a set water inlet flow of the washing machine.

The drum washing machine is provided with a plurality of water inlet flow values which can be selected by a user, and the washing machine carries out water inlet according to the water inlet flow values selected by the user.

The drum washing machine has a clothes weighing function, and can determine the flow value of inlet water according to the weight of clothes to carry out water inlet.

Example two

As shown in fig. 2 to fig. 4, the drum washing machine of the embodiment includes an inner drum 17 and a water inlet pipeline, the inner drum is a non-porous inner drum and is used for containing washing water when washing clothes, and the drum washing machine further includes a water measuring device for measuring water inflow, the water inlet pipeline is communicated with the water measuring device, and the water measuring device is communicated with the inner drum.

The drum type washing machine of this embodiment carries out the ration volume through setting up water gaging device, carries out the number of times of water gaging device water gaging according to the water level determination that sets for in advance to intaking in 1 of inner tube to solved sclausura inner tube drum type washing machine according to the problem of intaking of setting for the water level, ensured washing effect, simple structure controls the convenience.

Further, the water measuring device of the embodiment comprises a water measuring tank 21, wherein the water measuring tank 21 is provided with a water inlet and a water outlet, the water inlet is communicated with the water inlet pipeline, and the water outlet is communicated with the inner barrel 17; and the water outlet is provided with a water outlet control device for controlling the opening of the water outlet when the water quantity in the equivalent water tank 21 reaches a set value.

As an embodiment of this embodiment, as shown in fig. 2, the measuring water tank 21 is disposed at the bottom of the inner cylinder 17, the measuring water device includes a water level detecting device 22 for detecting the water level of the measuring water tank 21, the water outlet control device is a water tank draining pump 23, and the water tank draining pump 23 activates the water tank draining pump 23 to pump the water in the measuring water tank 21 into the inner cylinder 17 when the water level detecting device 22 detects that the water level in the measuring water tank 21 reaches a set value.

As an embodiment of this embodiment, as shown in fig. 3, the water measuring tank 21 is disposed on the upper portion of the inner cylinder 17, 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, and the water tank drain valve 25 opens to drain the water in the water measuring tank 21 into the inner cylinder when the water level detecting device 22 detects that the water level in the water measuring tank 21 reaches a set value.

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

As an implementation manner of this embodiment, the water measuring tank 21 is disposed on the upper portion of the inner cylinder 17, the water outlet is disposed on the bottom wall of the water measuring tank 21, the water outlet control device is a tank check valve for keeping the water outlet normally closed, when the amount of water in the water measuring tank reaches a certain value, the tank check valve is opened under the action of water pressure gravity, and after the water in the water measuring tank 21 is discharged into the inner cylinder 17, the tank check valve is reset 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 guiding out water overflowing from the water measuring tank.

Preferably, the drum washing machine comprises a drain line 8, said overflow line communicating with the drain line 8.

As an embodiment of the present embodiment, as shown in fig. 4, the water measuring device includes a heating device 26 disposed in the water measuring tank 21 and a water temperature detecting device for detecting the temperature of water in the water measuring tank.

The present embodiment also provides a control method of the drum washing machine, where the washing machine executes a washing/rinsing procedure, the washing machine controls washing water to enter the water measuring tank, when the water amount in the water measuring tank reaches a set value, water inflow is stopped, water in the water measuring tank is completely discharged into the inner drum, water inflow is restarted to enter the water measuring tank, and the above-mentioned steps are repeated until the water level in the inner drum reaches the set value, and water inflow is ended.

Furthermore, the washing machine controls the washing water to enter the water measuring tank, when the water amount in the water measuring tank reaches a set value, the water stops entering, the heating device is controlled to operate to heat the washing water, and when the water temperature detection device detects that the water temperature in the water measuring tank reaches the set value, all the water in the water measuring tank is discharged into the inner barrel.

EXAMPLE III

The embodiment mainly solves the problem of how to ensure the unbalanced air pressure of the sealed cabin of the drum washing machine with the non-porous inner barrel, and particularly, the water is cut off by a sudden electromagnetic valve, particularly a tap water pipe network to form negative pressure, and washing water in the sealed cabin is backwashed to the pipe network; or the inside has gas, the problem of difficult water intake.

As shown in fig. 5-7, the drum washing machine of the present embodiment includes an inner drum 17, the inner drum 17 is a non-porous inner drum, and is used for containing washing water when washing clothes, and further includes an air pressure balancing mechanism for communicating the inner drum 17 with the external environment to balance the air pressure inside the inner drum.

When water enters, the air in the sealed cabin of the inner cylinder is pressurized and can overflow through the balancing mechanism, so that the air pressure balance is ensured.

When water is cut off suddenly, external air can enter the sealed cabin of the inner barrel rapidly, suck back is damaged, air pressure balance is guaranteed, and washing water is prevented from being sucked into a tap water pipe network.

The air pressure balancing mechanism can also ensure the air pressure balance of the inner barrel during dehydration.

As an implementation manner of this embodiment, the air pressure balancing mechanism includes a pressure equalizing hole 27 disposed on the inner barrel 17, and one end of the pressure equalizing hole 27, which is communicated with the inside of the inner barrel 17, is disposed on the inner barrel 17 at a position close to the central rotation axis and is always higher than the highest water level position in the inner barrel 17.

The drum washing machine of the embodiment comprises a driving motor 16 and an inner drum shaft 13, wherein the driving motor 16 is in transmission connection with the inner drum 17 through the inner drum shaft 13 to drive the inner drum 17 to rotate, a pressure equalizing pore passage 27 is formed in the inner drum shaft 13 to communicate the inside of the inner drum 17 with the external environment, and the highest water level in the inner drum 17 is lower than that of the inner drum shaft 13. Thus, water in the inner barrel can be prevented from flowing out of the pressure equalizing pore passage.

The drum washing machine of the embodiment comprises an outer drum 18, wherein the inner drum 17 is arranged inside the outer drum 18, water discharged from the inner drum 17 is discharged through the outer drum 18, an inner drum door 6 for sealing the inner drum is arranged at the opening of the inner drum 17, the opening of the outer drum 18 is open, one end of a pressure equalizing channel 27 is communicated with the inside of the inner drum 17, and the other end of the pressure equalizing channel is arranged inside the outer drum 18 and communicated with the inside of the outer drum 18. In this way, the bore effluent is prevented from being collected within the outer cartridge 18.

Furthermore, in this embodiment, an inner cylinder drain hole is formed in a side wall of the inner cylinder 17, a normally closed one-way valve plug 11 is installed on the inner cylinder drain hole, and a push rod mechanism 10 for pushing the one-way valve plug 11 open to drain water is installed on the outer cylinder 18.

Preferably, a locking mechanism for locking the rotation of the inner cylinder is further arranged on the outer cylinder 18, and the push rod mechanism pushes the one-way valve plug open for drainage after the locking mechanism locks the inner cylinder.

Further, the drum washing machine of the present embodiment includes a water inlet pipeline, the inner drum shaft 13 has a hollow channel 14 therein, which is communicated with the inside of the inner drum 17, and the water inlet pipeline is communicated with the hollow channel 14 of the inner drum shaft 13; the pressure equalizing pore channel 27 and the hollow channel 14 are respectively communicated with the inside of the inner cylinder 17 and are arranged in an isolated way. Thus, the gas in the sealed cabin of the inner cylinder can be smoothly discharged to keep the air pressure in the inner cylinder balanced, and simultaneously, the water leakage caused by the direct discharge of the inlet water from the pressure equalizing pore passage 27 can be prevented.

Specifically, the hollow channel 27 extends from one end to the other end along the central axis direction of the inner cylinder shaft, the pressure equalizing channel includes a first channel section and a second channel section, the first channel section is arranged in parallel with the hollow channel, one end of the first channel section is communicated with the inside of the inner cylinder, one end of the second channel section is communicated with the first channel section, and the other end of the second channel section extends to the outer circumference of the inner cylinder shaft and is communicated with the inside of the outer cylinder.

Preferably, the second pore channel section and the first pore channel section are vertically arranged to form an L-shaped pressure equalizing pore channel.

Further, the inner cylinder shaft 13 is connected with a driving motor 16, the driving motor 16 comprises a stator and a rotor, and the rotor is fixedly connected with the inner cylinder shaft; the center of the rotor is provided with a through hole, and the water inlet pipeline penetrates through the through hole of the rotor to be communicated with the hollow channel of the inner cylinder shaft.

Preferably, a first dynamic sealing structure is arranged between the water inlet pipeline and the through hole of the rotor, and a second sealing structure is arranged between the through hole of the rotor and the hollow channel of the inner cylinder shaft.

The drum type washing machine of this embodiment, set up a plurality of dehydration holes on the lateral wall of inner tube 17, all install the centrifugal valve on the dehydration hole, the centrifugal valve open under the effect of dehydration centrifugal force and dewater the drainage.

Example four

The embodiment mainly solves the problem of how to ensure the unbalanced air pressure of the sealed cabin of the drum washing machine with the inner barrel without holes, and particularly, the water is cut off by a sudden electromagnetic valve, especially a tap water pipe network, so as to form negative pressure and wash the washing water in the sealed cabin back to the pipe network; or the inside has gas, the problem of difficult water intake.

As shown in fig. 8-12, the drum washing machine of the present embodiment includes an inner drum 17, the inner drum 17 is a non-porous inner drum, and holds washing water when washing clothes, and further includes a pressurization mechanism and/or a pressure release mechanism for communicating the inner drum with the external environment to balance the air pressure inside the inner drum 17.

The pressurizing mechanism described in this embodiment includes a pressurizing duct 28 and a negative pressure safety valve 29, the negative pressure safety valve 29 is disposed on the pressurizing duct 28, and is used for conducting the pressurizing duct 28 in one way when the internal pressure of the inner cylinder 17 is smaller than the atmospheric pressure of the external environment, the external environment gas enters the inner cylinder 17 from the pressurizing duct 28 to be pressurized until the internal pressure of the inner cylinder 17 is balanced with the atmospheric pressure of the external environment, and the negative pressure safety valve 29 is closed.

The pressure relief mechanism described in this embodiment includes a pressure relief hole 30 and a positive pressure safety valve 31, the pressure relief hole 30 is disposed at a position on the inner cylinder 17 close to the rotation center axis and is always higher than the highest water level position in the inner cylinder 17, the positive pressure safety valve 31 is disposed on the pressure relief hole 30, and is used for one-way communication of the pressure relief hole 30 for pressure relief 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 atmospheric pressure of the external environment, the positive pressure safety valve 31 is closed.

As shown in fig. 9, when water enters, the air in the sealed cabin of the inner cylinder 17 is pressurized, and once the pressure is greater than the set value of the positive pressure safety valve, the positive pressure safety valve is opened, and the air can overflow through the pressure relief hole, so that the air pressure balance is ensured.

As shown in fig. 10, when water is suddenly cut off, the air in the sealed cabin of the inner cylinder 17 is pressurized, once the air is smaller than the set value of the positive pressure safety valve, the external atmosphere can rapidly enter the sealed cabin and destroy the suck-back, so that the air pressure balance is ensured, and the washing water is prevented from being sucked into a tap water pipe network.

Other air pressure balancing mechanisms can also ensure the air pressure balance of the inner cylinder during dehydration.

The drum washing machine of the embodiment comprises a driving motor 16 and an inner drum shaft 13, wherein the driving motor 16 is in transmission connection with the inner drum 17 through the inner drum shaft 13 to drive the inner drum 17 to rotate, a pressurizing pore channel 28 and/or a pressure relief pore channel 30 are formed in the inner drum shaft 13 to communicate the inside of the inner drum 17 with the external environment, and the highest water level in the inner drum 17 is lower than the inner drum shaft 13.

The drum washing machine of the embodiment comprises an outer drum 18, wherein an inner drum 17 is arranged inside the outer drum 18, water discharged from the inner drum 17 is discharged from the outer drum 18, an inner drum door 6 for sealing the inner drum is installed at a drum opening of the inner drum 17, the drum opening of the outer drum 18 is opened, one end of a pressurizing pore passage 28 and/or a pressure relief pore passage 30 is communicated with the inside of the inner drum 17, and the other end of the pressurizing pore passage and/or the pressure relief pore passage 30 is arranged inside the outer drum 18 and communicated with the inside of the outer drum 18.

The drum washing machine of the embodiment comprises a water inlet pipeline, wherein a hollow channel 14 communicated with the inside of an inner drum 17 is arranged in an inner drum shaft 13, and the water inlet pipeline is communicated with the hollow channel 14 of the inner drum shaft 13; the pressure relief duct 30 and the hollow channel 14 are respectively communicated with the interior of the inner cylinder 17 and are arranged in an isolated manner.

As shown in fig. 9 and 10, the hollow passage 14 extends from one end to the other end along the central axis direction of the inner cylinder shaft 13, the pressure relief duct 30 includes a first duct section and a second duct section, the first duct section is arranged in parallel with the hollow passage, one end of the first duct section is communicated with the inside of the inner cylinder, one end of the second duct section is communicated with the first duct section, and the other end of the second duct section extends to the outer cylinder wall of the inner cylinder shaft and is communicated with the inside of the outer cylinder;

preferably, the second duct section and the first duct section are arranged perpendicularly to form an L-shaped pressure relief duct.

The drum washing machine of the embodiment comprises a water inlet pipeline, wherein a hollow channel 14 communicated with the inside of an inner drum 17 is arranged in an inner drum shaft 13, and the water inlet pipeline is communicated with the hollow channel 14 of the inner drum shaft 13; the pressurizing port 28 communicates with the hollow passage 14.

Further, the hollow channel 14 extends from one end to the other end along the central axis direction of the inner cylinder shaft 13, one end of the pressurizing duct 28 is communicated with the hollow channel 14, and the other end extends to the outer circumference inner cylinder wall of the inner cylinder shaft 13 to be communicated with the inside of the outer cylinder 18.

Preferably, the pressurizing port 28 and the hollow passage 14 are arranged perpendicular to each other.

The inner cylinder shaft is connected with the driving motor, the driving motor comprises a stator and a rotor, and the rotor is fixedly connected with the inner cylinder shaft; the center of the rotor is provided with a through hole, and the water inlet pipeline penetrates through the through hole of the rotor to be communicated with the hollow channel of the inner cylinder shaft.

As shown in fig. 11 and 12, the pressurizing duct 28 and the pressure relief duct 30 are both disposed on the inner cylinder shaft 13, and the openings for communicating with the atmosphere are both inside the outer cylinder 18; the openings of the sealed cabins communicated with the inner cylinder 17 are all arranged at the inner side of the water inlet channel 14 of the inner cylinder shaft 13.

It is contemplated that the preferred pressurization and

depressurization passageways

28, 30 are both disposed on the inner barrel shaft 13 and the vent to atmosphere opening is both inside the outer barrel 18; the openings of the sealed cabins communicated with the inner cylinder 17 are all arranged at the inner side of the sealed cabins.

EXAMPLE five

As shown in fig. 13-27, the drum washing machine of the present embodiment includes an inner drum 17 for independently containing washing water when washing clothes, the inner drum 17 is designed to be a non-porous inner drum, and a closed chamber with air holes is formed inside the inner drum during washing, so that washing water can be independently contained during washing and rinsing of the washing machine, and no water exists between the inner drum and the outer drum, thereby achieving the purpose of saving water, and simultaneously avoiding dirt from forming between the inner drum and the outer drum, keeping the drum wall clean, and improving the user experience; the inner tub 17 of the washing machine is provided with a drain port 39 through which water is drained during drainage and/or dehydration. The embodiment discloses a sealed drainage device suitable for above-mentioned drum type washing machine, includes:

a centrifugal member which moves under the centrifugal force of the rotation of the inner cylinder 17;

the plugging component is used for plugging the water outlet;

the centrifugal part is connected with the plugging part, and the centrifugal part moves centrifugally to drive the plugging part to open the water outlet.

The sealed drainage device provided by the embodiment utilizes the centrifugal force generated by the rotation of the inner barrel 17 to drive the centrifugal part to perform centrifugal motion, and the centrifugal part drives the plugging part to move to open the drainage port, so that drainage is realized: in principle, the drainage can be realized by setting the rotating speed of the inner drum by utilizing the working characteristics of the drum washing machine, and the drainage is easy to realize; structurally, the plugging component is opened by means of centrifugal movement of the centrifugal component, so that water drainage is realized, and the structure is simple. Therefore, the sealed drainage device of the application aims at keeping the drainage outlet closed during washing and rinsing of the drum washing machine with the non-porous inner cylinder to realize independent water containing of the non-porous inner cylinder, and realizes centrifugal drainage by controlling the rotating speed of the inner cylinder during drainage and/or dehydration, so that the problems of sealing and drainage of the drum washing machine with the non-porous inner cylinder are solved.

As an implementation manner 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 to move in the same direction or in the opposite direction to the centrifugal motion direction of the centrifugal component.

Considering that the plugging part and the centrifugal part move in the same direction to require more installation controls, preferably, the centrifugal part 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 generated by the rotation of the inner cylinder, and the plugging part moves along the radial direction of the inner cylinder and close to the central axis of the inner cylinder under the driving of the centrifugal part, so that the movement of the plugging part and the movement of the centrifugal part along the radial direction of the inner cylinder are overlapped with each other, the total movement stroke of the plugging part and the centrifugal part along the radial direction of the inner cylinder is reduced, and the installation space is reduced.

Further, the plugging member of 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 sealing the water outlet 39, the centrifugal member is connected to the plugging member, and the centrifugal movement of the centrifugal member drives the plugging member to move to open the water outlet.

The elastic member 43 of this embodiment generates an elastic pre-tightening force to the plugging member to keep the plugging member plugging the water outlet and keep the inner cylinder sealed to contain the washing water.

In order to achieve sealing between the blocking member and the drain opening, the present embodiment can be achieved by:

in the first embodiment, the sealing member is in direct sealing contact with the water discharge opening 39 to seal the water discharge opening 39, for example, an electromagnetic seal, a rigid seal, or the like is directly provided between the sealing member and the water discharge opening 39.

In the second embodiment, the sealing member is in sealing contact with the drain port 39 through the sealing member 40 to seal the drain port 39, and the sealing member 40 is used to seal the drain port, so that the cost is low, and the method is simple and effective.

Further, the plugging component is provided with a sealing convex part for circumferential contact sealing, and the sealing convex part is kept in sealing contact with the outer circumference inner cylinder wall or the inner wall of the water outlet so as to plug the water outlet. The sealing projection of the present embodiment can be directly provided on the sealing member to directly seal the water discharge port 39.

And/or the inner wall and/or the outer circumferential inner cylinder wall of the water outlet 39 are/is provided with a sealing convex part for circumferential contact sealing, and the sealing rib is kept in sealing contact with the sealing part to seal the water outlet.

And/or the sealing member 40 is provided with a sealing convex part 41 for circumferential contact sealing, and the sealing convex part 41 is in sealing contact with the blocking component and/or the water outlet 39 to block the water outlet.

The sealing protrusion of the present embodiment may be a sealing rib formed by partially protruding the blocking member and/or the inner wall of the drain opening 39 and/or the outer peripheral inner cylindrical wall of the drain opening 39 and/or the sealing member 40, or the sealing protrusion of the present embodiment may be a convex portion formed by partially recessing the blocking member and/or the inner wall of the drain opening 39 and/or the outer peripheral inner cylindrical wall of the drain opening 39 and/or the sealing member 40.

Further, the sealed drainage device of the present embodiment includes a housing 44 having a guide passage therein, and the blocking member includes a guide portion 35 disposed in the guide passage in a reciprocating manner, a blocking portion 36 disposed at one end of the guide portion 35 for blocking the drainage port, and a connecting portion 34 disposed at the other end of the guide portion for connecting the centrifugal member; the resilient member 43 is mounted in the housing 44 with one end abutting the housing 44 and the other end abutting the blocking member.

The elastic member of this embodiment is a compression spring, the compression spring is sleeved on the guiding portion 35, and preferably, the housing 44 further has a receiving groove therein for receiving the compression spring, the receiving groove is sleeved on the periphery of the guiding passage, one end of the compression spring abuts against the receiving groove, and the other end of the compression spring abuts against the blocking portion.

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

The centrifugal part comprises a weight part 38 and a connecting part 37, one end of the connecting part 37 is connected with the weight part 38, the other end is connected with the plugging part, and the middle part of the connecting part 37 is provided with a rotating shaft hole 42 which is rotatably arranged on the rotating shaft.

Preferably, the weight member 36 is integrally formed with the connecting member 37.

The other end of the connecting member 37 of this embodiment has a connecting rotary shaft hole 46 for fitting the plugging member, and the connecting rotary shaft is rotatably fitted in the connecting rotary shaft hole 46.

The embodiment also provides a drum washing machine with the sealed drainage device, which comprises:

an inner tub 17 for independently containing washing water when washing laundry;

a water outlet 39 provided on the inner tub 17 for discharging the washing water;

and the sealing drainage device is arranged on the inner wall of the inner barrel, and the centrifugal part moves centrifugally under the action of the centrifugal force generated by the rotation of the inner barrel to drive the plugging part to open the drainage outlet.

In the drum washing machine of this embodiment, in order to satisfy the centrifugal drainage, when the structure is designed, the whole weight M of the centrifugal component, the inner drum rotation speed V, the elastic pre-tightening force F0 of the elastic component, and the whole mass M of the blocking component are in accordance with:

when the rotating speed V of the inner cylinder reaches a set value V0, the centrifugal part starts to move centrifugally under the action of the centrifugal force of the inner cylinder, and the centrifugal force generated by the centrifugal part overcomes the elastic pretightening force F0 and the centrifugal force of the plugging piece to drive the plugging piece to move along the radial direction of the inner cylinder and close to the central axis of the inner cylinder to open the water outlet.

Furthermore, a clothes lifting device is arranged on the inner wall of the inner barrel, the clothes lifting device is provided with an inner cavity and a communication hole for communicating the inner cavity with the inner part of the inner barrel, the water outlet is formed in the wall of the inner barrel positioned in the inner cavity, and the sealed water drainage device is arranged in the inner cavity.

In the embodiment, the sealing drainage device is arranged in the inner cavity, the hidden installation of the sealing drainage device is realized, the sealing drainage device is prevented from interfering with clothes in the inner barrel, meanwhile, an independent protective shield is saved, the manufacturing cost is reduced, and the assembly process is simplified.

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

The embodiment also provides a control method of the drum washing machine, which comprises the following steps:

in the drainage and/or dehydration process of the washing machine, the rotating speed V of the inner barrel is controlled to meet the condition that V is more than or equal to V0, and the centrifugal part moves under the action of the centrifugal force generated by the rotation of the inner barrel to drive the plugging part to open the drainage outlet;

wherein, V0 is a set value.

Therefore, the drum washing machine of the embodiment can realize drainage and dehydration by controlling the rotation speed of the inner drum, in the drainage stage, the inner drum is controlled to rotate at least at the rotation speed of V0 to realize drainage, and in the dehydration stage, the rotation speed of the inner drum is controlled to be increased to be not less than V0 to perform drainage of dehydration.

EXAMPLE six

As shown in fig. 13-17, the sealing drainage device of the drum washing machine of the present embodiment, the drum washing machine includes an inner drum 17 for independently containing washing water when washing clothes, a drainage port 39 is formed on the inner drum 17, and the sealing drainage device includes:

and a sealing member which is in sealing contact with the water discharge port 39 and seals the water discharge port 39.

The sealed water draining device provided by the application seals the water outlet 39 through the sealing part, so that the water outlet 39 is kept sealed when the drum washing machine with the non-porous inner drum is used for washing and rinsing, and the non-porous inner drum can independently contain water.

Further, the blocking component is in direct sealing contact with the water outlet 39 so as to block the water outlet 39;

alternatively, the sealing member comprises a sealing part 36 and a sealing member 40 arranged on the sealing part 36, and the sealing member 40 of the sealing member is in sealing contact with the water outlet 39 to seal the water outlet 39.

Further, the sealing member has a sealing protrusion 41 for circumferential contact sealing, and the sealing protrusion 41 is held in sealing contact with the outer peripheral inner wall or the inner wall of the drain port 39 to seal the drain port.

And/or the sealing member 40 is provided with a sealing convex part 41 for circumferential contact sealing, and the sealing convex part 41 is in sealing contact with the outer circumferential inner cylinder wall or the inner wall of the water outlet 39 to seal the water outlet 39.

In order to achieve good circumferential sealing between the sealing convex part 41 and the outer circumference inner cylinder wall of the water outlet 39, the inner cylinder 17 of the embodiment has a flat part 57 with a flat inner wall surface, the water outlet 39 is opened on the flat part 57, and the sealing convex part 41 and the flat part 57 at the outer circumference of the water outlet 39 keep circumferential sealing contact to close the water outlet.

In another embodiment of this embodiment, the drain port 39 is opened on the circular arc wall of the inner cylinder, and the sealing protrusion 41 is in circumferential sealing contact with the inner surface of the circular arc wall of the outer periphery of the drain port 39 to close the drain port.

Further, the sealing protrusion 41 of the present embodiment includes at least one circle of sealing ribs disposed on the blocking member/sealing member, and each sealing rib is in circumferential sealing contact with the inner surface of the circular arc wall.

Preferably, said sealing protrusion comprises at least two rings of sealing ribs arranged on the closure member/seal.

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

or the height of each circle of sealing ribs is gradually increased from the outer ring to the arrangement direction of the inner ring so as to keep circumferential sealing contact with the inner surface of the circular arc wall opposite to each circle of sealing ribs.

In one embodiment of this embodiment, the sealing rib has a sealing rib base, a sealing rib end for keeping sealing contact with the peripheral wall of the outer periphery of the drain opening, and a sealing rib transition portion for transitionally connecting the sealing rib base and the sealing rib end.

Preferably, the sealing rib transition part is a fillet structure R between the end part of the sealing rib and the sealing rib body.

The sealing member 40 of the present embodiment is a sealing plug body made of an elastic material, and the sealing plug body has an open installation chamber for assembling a plugging component; the sealing plug body is provided with a sealing end face which is matched with the inner cylinder flat part at the periphery of the water outlet for sealing;

preferably, at least one circle of sealing ribs are arranged on the sealing end face.

Further, the sealing drainage device of the embodiment further comprises a centrifugal part which moves under the action of centrifugal force generated by rotation of the inner cylinder; the centrifugal part is connected with the plugging part, and the centrifugal part centrifugally moves to drive the plugging part to open the water outlet;

the plugging component comprises a guide part 35 which can reciprocate and is arranged in the guide channel, a plugging part 36 which is arranged at one end of the guide part 35 and is used for plugging the water outlet 39, and a connecting part 34 which is arranged at the other end of the guide part 35 and is used for connecting the centrifugal component; the seal 40 is provided on the closure.

Furthermore, an extension wall is arranged between the water outlet 39 and the inner wall of the inner cylinder 17, so that the water outlet protrudes inwards or outwards from the wall of the inner cylinder, the plugging part extends into the extension wall and keeps circumferential sealing contact with the inner wall of the extension wall to plug the water outlet, and the sealing effect between the plugging part and the water outlet 39 is further improved.

Or, the water outlet 39 is flush with the inner wall of the inner cylinder 17, and the blocking component is in circumferential sealing contact with the outer circumferential inner cylinder wall of the water outlet or in sealing contact with the inner circumferential wall of the water outlet so as to block the water outlet.

EXAMPLE seven

As shown in fig. 13 and 18-22, the sealed drainage device of the drum washing machine of the present embodiment includes an inner drum 17 for independently containing washing water when washing clothes, the inner drum 17 is provided with a drainage port 39, and the sealed drainage device includes:

and the plugging part is in sealing contact with the water outlet and is used for plugging the water outlet.

The blocking component is provided with first sealing components 47 with unequal cross-sectional areas of all cross sections along the central axis, and the peripheral wall of at least one cross section is used for being in circumferential sealing contact with the water outlet to block the water outlet.

The plugging part of the sealed drainage device of the embodiment is provided with the first sealing part with the variable cross section, so that the first sealing part can be better circumferentially sealed with the drainage port, and the sealing effect of the drainage port is ensured.

As an embodiment of this embodiment, the first sealing member includes a proximal portion disposed close to the water discharge opening and a distal portion disposed away from the water discharge opening, and the cross-sectional area of each cross-section of the first sealing member 47 gradually increases from the proximal portion to the distal portion along the central axis.

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

As an embodiment of the present embodiment, the inner tube 17 has a flat portion with a flat inner wall surface, the water outlet 39 is opened on the flat portion, and the outer peripheral wall of at least one cross section of the first sealing member 47 is in circumferential sealing contact with the water outlet 39 to close the water outlet;

or the water outlet is arranged on the circular arc-shaped wall of the inner cylinder, and the peripheral inner cylinder wall of at least one cross section of the first sealing part 47 is in circumferential sealing contact with the water outlet to seal and close the water outlet.

Further, the plugging member of the present embodiment is further provided with a second sealing member located on the outer periphery of the first sealing member 47, and the second sealing member is in circumferential sealing contact with the outer peripheral inner cylindrical wall of the water discharge port 39. In the present embodiment, the first sealing member and the second sealing member realize multiple sealing between the sealing member and the drain opening 39, thereby ensuring the sealing effect of the drain opening 39 and preventing water leakage.

Specifically, the second sealing member of the present embodiment achieves a first resealing of the outer periphery of the drain opening, and the sealing contact between the first sealing member and the drain opening ensures a second resealing.

As an embodiment of this embodiment, the second sealing member includes a sealing protrusion 41 for contact sealing disposed on the outer periphery of the first sealing member 47, and the sealing protrusion 41 is in sealing contact with the outer peripheral inner cylindrical wall of the water outlet 39 to close the water outlet.

Further, the first sealing member 47 and the second sealing member are made of elastic materials and are respectively assembled on the plugging member;

The sealed drainage device of the embodiment also comprises a centrifugal part which moves under the action of centrifugal force generated by the rotation of the inner cylinder; the centrifugal part is connected with the plugging part, and the centrifugal part centrifugally moves to drive the plugging part to open the water outlet;

The embodiment also discloses a drum washing machine with the sealing drainage device, which comprises:

an inner tub for independently containing washing water when washing laundry;

Further, the water outlet 39 is provided with an extension wall 48 extending between the water outlet and the inner wall of the inner cylinder 17, so that the water outlet protrudes inwards or outwards from the wall of the inner cylinder, the first sealing part 47 protrudes into the extension wall 48, and the outer peripheral wall of at least one cross section is in circumferential sealing contact with the inner peripheral wall of the extension wall 48 to seal the water outlet.

In order to further enhance the sealing effect of the first sealing member 47, the first sealing member 47 is in surface contact or line contact with the inner circumferential wall of the extension wall 48 of the drain opening and seals the drain opening.

Preferably, the inner peripheral wall of the extension wall matches the shape of the outer peripheral wall of the first seal member.

Further preferably, the first seal member is a tapered or truncated cone-shaped seal plug having a cross section gradually increasing from a proximal end portion to a distal end portion with respect to the drain port, and the extension wall of the drain port is a truncated cone-shaped peripheral wall having an inner cross section gradually decreasing from the inner cylindrical wall toward a direction away from the central axis of the inner cylindrical wall.

Example eight

As shown in fig. 1 and 23 to 25, the drum washing machine of the present embodiment includes:

an inner cylinder water outlet 39 provided on the inner cylinder 17 for discharging the washing water;

a mounting member 50 mounted on the water outlet 39 on the inner wall of the inner cylinder 17;

a mounting member water outlet 51 provided in the mounting member and communicating with the inner cylinder water outlet 39;

the sealed drainage device comprises a sealing component for sealing the drainage port 51 of the mounting piece.

The mounting member 50 is sealingly connected to the inner cylindrical wall in this embodiment.

Preferably, the inner cylinder water outlet is arranged on the inner wall of the inner cylinder, the mounting part comprises a connecting part, and the connecting part is hermetically connected with the inner cylinder wall at the periphery of the inner cylinder water outlet.

The mounting member 50 of this embodiment further includes an end cover portion, two opposite sidewalls of the flat portion are connected with the inner wall of the inner cylinder in a sealing manner, the other two opposite sidewalls of the flat portion are connected with the end cover portion respectively, and the end cover portion is connected with the inner wall of the inner cylinder in a sealing manner.

Preferably, the flat portion is integrally formed with the end cap portion.

In the embodiment, the installation part 50 is installed on the inner wall of the inner barrel, the installation part 50 is provided with the installation part water outlet 51 communicated with the inner barrel water outlet 39, the inner barrel water outlet 39 can be sealed by sealing the installation part water outlet 51 through the water discharging device, the existing circular arc-shaped wall structure of the inner barrel is not changed, meanwhile, the installation part 50 is used for realizing the sealing assembly of the sealing water discharging device, the installation structure is simple, and the sealing effect is better because the installation part is provided with the flat part which is in sealing fit with the sealing part.

Furthermore, the inner cylinder water outlet is formed in the arc-shaped wall of the inner cylinder, the mounting part comprises a connecting part, and the connecting part is connected with the inner cylinder wall of the outer periphery of the inner cylinder water outlet in a sealing mode.

Specifically, the flat part is a flat plate, the end cover part further comprises an end cover plate, two opposite side walls of the flat plate are in sealing connection with the circular arc-shaped inner wall of the inner cylinder, the other two opposite side walls of the flat plate are respectively connected with the end cover plate, and the end cover plate is in sealing connection with the circular arc-shaped inner wall of the inner cylinder.

Preferably, the flat plate is integrally formed with the end cover plate.

As shown in fig. 23 and 24, as an embodiment of the present invention, a sealing ring 52 is disposed between the mounting member 50 and the inner wall of the inner tube to achieve a sealing connection, or the mounting member 50 is welded to the inner wall of the inner tube.

The sectional area of the opening of the inner cylinder drain port 39 in the present embodiment is larger than or equal to the sectional area of the fixture drain port 51; in this way, water discharged from the fixture water discharge port 51 can be discharged from the inner cylinder water discharge port 39 in time at the time of water discharge, and smooth water discharge is ensured.

Preferably, the inner cylinder water outlet and the mounting part water outlet are both circular holes, and the aperture of the inner cylinder water outlet is larger than or equal to that of the mounting part water outlet.

Further preferably, the central axis of the inner cylinder water outlet and the central axis of the mounting member water outlet are arranged in line, so that the water discharged from the mounting member water outlet 51 can directly flow to the inner cylinder water outlet 39 to be discharged, and the outflow path from the mounting member water outlet 51 to the inner cylinder water outlet 39 is prevented from deflecting, and the water discharge effect is prevented from being influenced.

In order to increase the sealing effect between the sealing drainage device and the mounting member drainage opening 51, a sealing engagement portion 54 that is in sealing engagement with the blocking member is provided on the flat portion at the periphery of the mounting member drainage opening 51.

Preferably, the sealing engagement portion 54 is at least one ring of sealing rib disposed on the periphery of the water outlet, and the sealing rib is in sealing contact with the sealing portion of the blocking member.

Further, the mounting member drain opening 51 has a mounting member extension wall 53 between the mounting member drain opening 51 and the flat portion such that the mounting member drain opening 51 protrudes inwardly or outwardly from the flat portion, the blocking member is provided with a first sealing member 47, the first sealing member 47 protrudes into the mounting member extension wall 53, and the outer peripheral wall of at least one cross section is held in sealing contact with the inner peripheral wall of the mounting member extension wall 53.

Further, the first sealing member 47 is in surface contact or line contact with the inner peripheral wall of the mount extension wall 53 and seals the mount drain opening;

preferably, the inner peripheral wall of the mount extension wall 53 matches the shape of the outer peripheral wall of the first seal member 47.

Further preferably, the first sealing member 47 is a tapered or truncated cone shaped sealing plug having a cross section area gradually increasing from a proximal end portion to a distal end portion with respect to the fitting outlet, and the fitting extension wall 53 is a truncated cone shaped peripheral wall having an inner cross section area gradually decreasing from a flat portion toward a direction away from the inner cylinder central axis.

Furthermore, a clothes lifting device is arranged on the inner wall of the inner barrel, the clothes lifting device is provided with an inner cavity and a communication hole 33 for communicating the inner cavity with the inner barrel, the water outlet is formed in the wall of the inner barrel positioned in the inner cavity, and the mounting part 50 and the sealing drainage device are arranged in the inner cavity.

Specifically, the lifting device of 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 toward the inside of the inner cylinder, the communication hole 33 is provided on the lifting rib protrusion 49, and the mounting member 50 is circumferentially and hermetically connected with the lifting rib base 58.

The sealed drainage device of the embodiment also comprises a centrifugal part which moves under the action of centrifugal force generated by the rotation of the inner cylinder; the centrifugal part is connected with the plugging part, and the centrifugal part moves centrifugally to drive the plugging part to open the water outlet of the mounting part.

Practice ofExample nine

As shown in fig. 13 and 26 to 27, the drum washing machine of the present embodiment includes:

an assembly port formed in the inner cylinder 17;

a mounting member 50 sealingly mounted in the mounting opening;

a mounting member water outlet 51 provided in the mounting member;

the sealed drainage device comprises a plugging component for plugging the drainage port of the mounting piece.

This embodiment is through installing installed part 50 on the assembly opening of inner tube, and installed part 50 has installed part outlet 51, can realize the sealed of inner tube drainage through sealed drainage device shutoff installed part outlet 51, when not changing the arc wall structure of current inner tube, has realized sealed drainage device's sealed assembly through installed part 50, and mounting structure is simple, and because the installed part has the flattening portion with the sealed complex of shutoff part mutually, sealed effect is better.

Further, the assembly opening is formed in the wall of the inner barrel, and the mounting member 50 includes a connecting portion, which is connected to the inner peripheral wall of the assembly opening in a sealing manner.

The installation part of this embodiment includes the pars planata, the installation part outlet set up on the pars planata.

In order to seal the fitting outlet 51 with the sealing member, as an embodiment of the present embodiment, a sealing engagement portion 54 that is in sealing engagement with the sealing member is provided on an outer wall of the flat portion located on the outer periphery of the fitting outlet 51.

Preferably, the sealing engagement portion 54 is at least one circle of sealing rib arranged on the periphery of the drain opening of the mounting member, and the sealing rib is in sealing contact with the blocking component.

In yet another embodiment of this embodiment, the blocking member has at least one sealing rib, and the sealing rib is in sealing contact with the flat part of the outer periphery of the mounting member water outlet 51;

and/or, a sealing piece is arranged on the plugging component, the sealing piece is provided with at least one circle of sealing rib, and the sealing rib keeps sealing contact with the outer wall surface of the flat part at the periphery of the water outlet of the installation part.

As another embodiment of this embodiment, at least one circle of the first sealing rib is disposed on the outer wall of the flat part located at the periphery of the drain opening of the mounting member; the sealing element is arranged on the plugging component and provided with at least one circle of second sealing ribs; first sealed muscle and the crisscross setting of the sealed muscle of second, the straight terminal surface of first sealed muscle and sealing member keeps sealed contact, the sealed muscle of second keeps sealed contact with the straight flattening portion of installed part outlet periphery.

In order to further increase the sealing effect of the closure member against the mounting member drain opening, the mounting member drain opening 51 has a mounting member extension wall 53 between the mounting member drain opening 51 and the flat portion such that the mounting member drain opening 51 protrudes inwardly or outwardly beyond the flat portion, the closure member is provided with a first sealing member 47, the first sealing member 47 protrudes into the mounting member extension wall 53, and the at least one cross-sectional outer circumferential wall is in circumferential sealing contact with the inner circumferential wall of the mounting member extension wall.

preferably, the inner peripheral wall of the mount extension wall 53 matches the shape of the outer peripheral wall of the first seal member 47;

more preferably, the first seal member 47 is a tapered seal plug having a cross section gradually increasing from a proximal end portion to a distal end portion with respect to the fitting drain opening, and the fitting extension wall 53 is a circular truncated cone peripheral wall having an inner cross section gradually decreasing from a flat portion toward a direction away from the inner cylinder central axis.

In this embodiment, a clothes lifting device is arranged on the inner wall of the inner barrel 17, the clothes lifting device is provided with an inner chamber and a communication hole for communicating the inner chamber with the inner barrel, the assembly port is arranged on the wall of the inner barrel positioned in the inner chamber, and the sealed drainage device is arranged in the inner chamber.

The drainage sealing device of the embodiment also comprises a centrifugal part which moves under the action of centrifugal force generated by the rotation of the inner cylinder; the centrifugal part is connected with the plugging part, and the centrifugal part moves centrifugally to drive the plugging part to open the water outlet of the mounting part.

Furthermore, the centrifugal part comprises a weight part and a connecting part, one end of the connecting part is connected with the weight part, the other end of the connecting part is connected with the plugging part, and the middle part of the connecting part is provided with a rotating shaft hole which is rotatably arranged on the rotating shaft;

preferably, the weight member and the connecting member are integrally formed.

It should be noted that those skilled in the art can implement the above embodiments alone or in combination with each other.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a drum type washing machine's sealed drainage device, drum type washing machine independently holds the inner tube of washing water when washing the clothing, offers the outlet on the inner tube, its characterized in that, sealed drainage device includes:

the blocking component is provided with first sealing components with unequal cross-sectional areas of all cross sections along the central axis, and the peripheral wall of at least one cross section is used for being in circumferential sealing contact with the water outlet to block the water outlet;

the inner cylinder is provided with a leveling part with a flat inner wall surface, the water outlet is formed in the leveling part, and the peripheral wall of at least one cross section of the first sealing part is in circumferential sealing contact with the water outlet to seal the water outlet;

or the water outlet is formed in the circular arc-shaped wall of the inner cylinder, and the peripheral wall of at least one cross section of the first sealing part is in circumferential sealing contact with the water outlet to seal the water outlet;

a sealing convex rib is formed on the inner wall of the water outlet in a protruding way;

the blocking component is also provided with a second sealing component positioned on the periphery of the first sealing component, and the second sealing component is in circumferential sealing contact with the inner cylinder wall of the periphery of the water outlet;

the second sealing component comprises a sealing convex part which is arranged at the periphery of the first sealing component and is used for contact sealing, and the sealing convex part keeps sealing contact with the flat part of the inner cylinder wall at the periphery of the water outlet so as to seal the water outlet;

the plugging component comprises a guide part which can reciprocate and is arranged in the guide channel, a plugging part which is arranged at one end of the guide part and is used for plugging the water outlet, and a connecting part which is arranged at the other end of the guide part and is used for connecting the centrifugal component;

the guide part is a guide column body, and the plugging part is a plugging plug formed by extending one end of the guide column body in the circumferential direction;

the first sealing component and the second sealing component are arranged on the blocking part.

2. The sealed drain of claim 1, wherein the first sealing member includes a proximal portion disposed proximate the drain opening and a distal portion disposed distal from the drain opening, the first sealing member having a cross-sectional area that increases from the proximal portion to the distal portion along the central axis.

3. The sealed drain of claim 2, wherein the first sealing member is a tapered or frustoconical sealing plug having a cross-sectional area that increases from the proximal portion to the distal portion.

4. The sealed drain of claim 1,

the first sealing part and the second sealing part are respectively made of elastic materials and are respectively assembled on the plugging part;

or the first sealing component and the second sealing component are sealing plug bodies integrally made of elastic materials, and the sealing plug bodies are assembled on the plugging component.

5. The sealing and drainage device according to any one of claims 1 to 3, further comprising a centrifugal member which moves under the centrifugal force of the rotation of the inner cylinder; the centrifugal part is connected with the plugging part, and the centrifugal part moves centrifugally to drive the plugging part to open the water outlet.

6. A drum washing machine having a sealed drain device according to any one of claims 1-5, comprising:

an inner tub for independently containing washing water when washing clothes;

a water outlet arranged on the inner cylinder for discharging washing water;

the sealed drainage device is arranged on the inner wall of the inner cylinder, and the water outlet is opened by the plugging part when the rotating speed of the inner cylinder reaches a set value V0;

the drum washing machine also comprises a water measuring device for measuring the water inflow, a water inlet pipeline of the drum washing machine is communicated with the water measuring device, and the water measuring device is communicated with the inner drum;

the water measuring device comprises a water measuring water tank, the water measuring water tank is provided with a water inlet and a water outlet, the water inlet is communicated with the water inlet pipeline, and the water outlet is communicated with the inner barrel;

before water enters the inner cylinder, the water enters the water measuring device to be measured quantitatively, and the water measuring frequency of the water measuring device is determined according to the set water level;

the washing machine executes a washing and/or rinsing program, the washing machine controls washing water to enter the water measuring tank, when the water amount in the water measuring tank reaches a set value, water feeding is stopped, water in the water measuring tank is completely discharged into the inner barrel, water feeding is started again to enter the water measuring tank, the process is circulated until the water level in the inner barrel reaches the set value, and water feeding is finished.

7. A drum washing machine according to claim 6, characterized in that the water outlet has an extension wall extending between the water outlet and the inner wall of the inner drum, so that the water outlet protrudes out of the inner drum wall, the first sealing part extends into the extension wall, and the outer peripheral wall of at least one cross section is in circumferential sealing contact with the inner peripheral wall of the extension wall to close the water outlet.

8. A drum washing machine according to claim 7, characterized in that the first sealing member is in surface contact or line contact with the inner peripheral wall of the extension wall of the drain opening and seals the drain opening.

9. A drum washing machine according to claim 8, characterized in that the first sealing member is a tapered or truncated cone shaped sealing plug having a cross section area gradually increasing from a proximal end portion to a distal end portion with respect to the drain opening, and the extension wall of the drain opening is a truncated cone shaped peripheral wall having an inner cross section area gradually decreasing from the inner cylindrical wall toward a direction away from the central axis of the inner cylindrical wall.