CN111379116A

CN111379116A - Drum washing machine and control method thereof

Info

Publication number: CN111379116A
Application number: CN201811637113.7A
Authority: CN
Inventors: 赵志强; 许升; 吕佩师
Original assignee: Qingdao Haier Drum Washing Machine Co Ltd
Current assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-07-07
Anticipated expiration: 2038-12-29
Also published as: WO2020135314A1; CN111379116B

Abstract

The invention provides a drum washing machine and a control method thereof, wherein the drum washing machine comprises an inner drum, washing water is contained in the inner drum when clothes are washed, and the inner drum is provided with a plurality of annular water collecting grooves along the circumferential direction of the inner wall of the inner drum and axial water collecting grooves which penetrate and are communicated with the annular water collecting grooves along the axial direction of the inner drum; and a drainage device is arranged in the annular water collecting tank. The inner wall of the inner barrel of the drum washing machine is provided with the annular water collecting grooves, and N wave crest and trough structures are formed on the wall surface of the inner barrel, so that centrifugally discharged water is collected in each annular water collecting groove; the inner tube inner wall is provided with an axial groove structure, the axial grooves are communicated with the annular water collecting grooves, water in each annular water collecting groove is collected faster and easier and then discharged through the drainage device, and efficient drainage and dehydration drainage are achieved.

Description

Drum washing machine and control method thereof

Technical Field

The invention relates to the technical field of laundry equipment, in particular to a drum washing machine and a control method thereof.

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 proposed at present, for example, patent No. 201410215346.3, which is 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 guide pipe is arranged on the door seal, one end of the water inlet guide pipe is connected with a washing water rapid heating device, the other end of the water inlet guide pipe penetrates through the door seal. 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, how to realize drainage and dehydration for the drum washing machine adopting the non-porous inner drum is also a technical problem to be solved.

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 drum washing machine, specifically, the following technical solutions are adopted:

a drum washing machine comprises an inner drum, wherein washing water is contained in the inner drum when clothes are washed, and the inner drum is provided with a plurality of annular water collecting grooves along the circumferential direction of the inner wall of the inner drum and axial water collecting grooves which penetrate and are communicated with the annular water collecting grooves along the axial direction of the inner drum; and a drainage device is arranged in the annular water collecting tank.

Furthermore, the annular water collecting grooves comprise a plurality of first annular water collecting grooves and at least one second annular water collecting groove, the first annular water collecting grooves and the second annular water collecting grooves are communicated with each other through the axial water collecting grooves, the groove width in the second annular water collecting grooves is larger than that in the first annular water collecting grooves, and the drainage device is arranged in the second water collecting grooves.

Furthermore, the inner cylinder is of a cylindrical structure with a constant inner diameter, and is provided with an inner cylinder opening, an inner cylinder bottom opposite to the inner cylinder opening and an inner cylinder wall which is connected with the inner cylinder bottom in an enclosing manner to form an inner accommodating cavity; a second annular water collecting tank is arranged in the middle of the inner barrel wall, and a plurality of first annular water collecting tanks are sequentially arranged in the inner barrel wall between the inner barrel opening and the second annular water collecting tank and between the inner barrel bottom and the second annular water collecting tank along the axial direction of the inner barrel;

preferably, the axial water collecting grooves are uniformly arranged along the circumferential direction of the inner cylinder wall and respectively penetrate and communicate with the second annular water collecting groove and the first annular water collecting groove.

Further, the axial length between the second annular water collecting groove and the opening of the inner cylinder is L1, the axial length between the second annular water collecting groove and the bottom of the inner cylinder is L2, and the L1 and the L2 satisfy the following conditions: l1 is more than or equal to L2.

Furthermore, the inner cylinder wall is provided with an inner diameter expansion section/an inner diameter reduction section, the inner diameter of the inner diameter expansion section/the inner diameter reduction section is gradually increased/decreased along the direction from the opening of the inner cylinder to the bottom of the inner cylinder, a plurality of first annular water collecting grooves and a second annular water collecting groove arranged at the end with the largest inner diameter are sequentially arranged on the inner wall of the inner diameter expansion section/the inner diameter reduction section along the axial direction of the inner wall, the axial water collecting groove sequentially penetrates and is communicated with the first annular water collecting grooves and the second annular water collecting groove, and the groove width in the second annular water collecting groove is larger than that in the first annular water collecting groove; the drainage device is arranged in the second annular water collecting tank.

Furthermore, the inner cylinder wall is provided with an inner diameter straight section, and the inner diameter of the inner diameter straight section is more than or equal to the inner diameter of the largest end of the inner diameter expanding section/the inner diameter reducing section; the inner diameter straight section is connected with the end with the largest inner diameter of the inner diameter expanding section/the inner diameter reducing section; the inner wall of the inner diameter expanding section/the inner diameter reducing section is sequentially provided with a plurality of first annular water collecting grooves along the axial direction, the inner wall of the inner diameter straight section is provided with at least one second annular water collecting groove, the groove width in the second annular water collecting groove is larger than that in the first annular water collecting groove, and the axial water collecting grooves sequentially penetrate and communicate the first annular water collecting grooves and the second annular water collecting grooves.

Furthermore, the inner cylinder wall is provided with an inner diameter expansion section and an inner diameter reduction section, the end with the minimum inner diameter of the inner diameter expansion section is close to the inner cylinder opening, and the end with the maximum inner diameter of the inner diameter expansion section extends towards the middle part of the inner cylinder wall; the inner diameter minimum end of the inner diameter reduced section is close to the inner barrel bottom, and the inner diameter maximum end of the inner diameter reduced section extends towards the middle of the inner barrel wall to form an inner barrel with small inner diameters at two ends and large inner diameter in the middle; the inner walls of the inner diameter expanding section and the inner diameter reducing section are sequentially provided with a plurality of first annular water collecting grooves along the axial direction, and the second annular water collecting grooves are arranged on the cylinder wall between the inner diameter maximum end of the inner diameter expanding section and the inner diameter maximum end of the inner diameter reducing section.

Furthermore, the inner cylinder wall is provided with an inner diameter expanding section and an inner diameter reducing section, the largest end of the inner diameter reducing section is close to the opening of the inner cylinder, and the smallest end of the inner diameter reducing section extends towards the middle of the inner cylinder wall; the end with the largest inner diameter of the inner diameter expansion section is close to the bottom of the inner barrel, and the end with the smallest inner diameter of the inner diameter expansion section extends towards the middle part of the inner barrel wall to form an inner barrel with two large inner diameters and a small inner diameter in the middle; the inner walls of the inner diameter expanding section and the inner diameter reducing section are sequentially provided with a plurality of first annular water collecting grooves along the axial direction, and the number of the second annular water collecting grooves is two, and the two first annular water collecting grooves are respectively arranged at the inner diameter maximum end of the inner diameter expanding section and the inner diameter maximum end of the inner diameter reducing section.

The inner diameter straight section is connected with the end with the largest inner diameter of the inner diameter expanding section and the end with the largest inner diameter of the inner diameter reducing section, and the second annular water collecting tank is arranged on the inner diameter straight section.

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

a control method of a drum washing machine comprises an inner drum, washing water is contained in the inner drum when clothes are washed, a drain hole is formed in the side wall of the inner drum, a drainage device for controlling the conduction/closing of the drainage device is installed on the drain hole, the drainage device is a centrifugal valve, and the control method comprises the following steps: in the washing process of the washing machine, the rotating speed of the inner barrel is controlled to reach or exceed the set rotating speed N0, and the centrifugal valve is subjected to centrifugal force to open the drain hole for draining water in the inner barrel.

The invention provides a drum washing machine with a non-porous inner barrel front opening structure, which has a simple structure, and can greatly reduce the washing water consumption of the washing machine without filling washing/rinsing water between an inner barrel and an outer barrel. 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 inner wall of the inner barrel of the drum washing machine is provided with the annular water collecting grooves, and N wave crest and trough structures are formed on the wall surface of the inner barrel, so that centrifugally discharged water is collected in each annular water collecting groove; the inner tube inner wall is provided with an axial groove structure, the axial grooves are communicated with the annular water collecting grooves, water in each annular water collecting groove is collected faster and easier and then discharged through the drainage device, and efficient drainage and dehydration drainage are achieved.

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 (first embodiment);

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 five drum washing machine according to an embodiment of the present invention;

FIG. 14 is a bottom view of a five drum washing machine according to an embodiment of the present invention;

FIG. 15 is a schematic perspective view of a five-drum washing machine according to an embodiment of the present invention;

FIG. 16 is an enlarged partial view of FIG. 15 of the five drum washing machine according to the embodiment of the present invention;

FIG. 17 is a schematic view of a six-drum washing machine according to an embodiment of the present invention (first embodiment);

FIG. 18 is a schematic view of a six-drum washing machine according to an embodiment of the present invention (second embodiment);

FIG. 19 is a block flow diagram of one embodiment of a control method for a seven drum washing machine in accordance with an embodiment of the present invention;

FIG. 20 is a schematic view of an eight drum washing machine according to an embodiment of the present invention;

FIG. 21 is an enlarged partial view of FIG. 20 of the eight drum washing machine in accordance with the embodiment of the present invention;

FIG. 22 is a schematic view of a drum type washing machine according to an eighth embodiment of the present invention;

FIG. 23 is a schematic view of a nine-drum washing machine according to an embodiment of the present invention;

FIG. 24 is an enlarged partial view of FIG. 23 of the nine drum washing machine according to the embodiment of the present invention;

FIG. 25 is a schematic view of a drum washing machine according to a ninth embodiment of the present invention;

FIG. 26 is an enlarged partial view of FIG. 25 of the nine drum washing machine according to the embodiment of the present invention;

FIG. 27 is a schematic view of a drum washing machine according to a ninth embodiment of the present invention;

FIG. 28 is an enlarged partial view of FIG. 27 of the nine drum washing machine according to the embodiment of the present invention;

FIG. 29 is a schematic view of a ten-drum washing machine according to an embodiment of the present invention;

fig. 30 is a partially enlarged view of fig. 29 of the ten-drum washing machine according to the embodiment of the present invention;

FIG. 31 is a schematic view of the inner drum structure of a ten-drum washing machine according to an embodiment of the present invention;

fig. 32 is a partially enlarged view of fig. 31 of the ten-drum washing machine according to the embodiment of the present invention;

fig. 33 is a schematic view of an eleventh drum washing machine according to an embodiment of the present invention.

Detailed Description

A drum washing machine and a control method thereof according to the present invention will be described in detail with reference to the accompanying drawings:

as shown in fig. 1 to 18, 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 cylinder 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 arranged on the outer cylinder 18, and the locking mechanism pushes the push rod mechanism 10 to push open the unidirectional valve plug 11 to discharge water after the inner cylinder is locked.

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 for users to select, and the washing machine carries out water inlet according to the water inlet flow values selected by the users.

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. 2-4, 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 the water inlet quantity, 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 water measuring tank 21 is disposed at the bottom of the inner tub 17, 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 draining pump 23, and the water tank draining pump 23 starts the water tank draining pump 23 to pump the water in the water measuring tank 21 into the inner tub 17 when the water level detecting device 22 detects that the water level in the water measuring 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 atmosphere 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.

Other air pressure balancing mechanisms can also ensure the air pressure balance of the inner cylinder 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, the water in the inner cylinder 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 passage 27 and the hollow channel 14 are respectively communicated with the inside of the inner cylinder 17 and are arranged in a mutually 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 peripheral wall 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

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 close to the rotation center axis on the inner cylinder 17 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 conducting the pressure relief hole 30 in one way 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, and 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.

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/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 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.

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 channel 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 channel, 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 peripheral 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 passage 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 passage 14, and the other end extends to the outer peripheral wall of the inner cylinder shaft 13 and is 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 to 16, 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 laundry, and further includes a position detecting device for detecting a position of the inner drum.

The drum washing machine of the embodiment comprises a driving motor 16 and an inner drum shaft 13, wherein the driving motor 16 comprises a stator and a rotor, the rotor is fixedly connected with the inner drum shaft 13 to drive an inner drum 17 to rotate, the position detection device comprises a position sensor 33 and a detected terminal 38, the detected terminal 38 is arranged on the rotor, and the position sensor 33 is fixed at a position corresponding to the detected terminal 38.

The drum washing machine of the embodiment comprises an outer drum 18, the position sensor 33 is arranged on one side of the outer drum 18 close to the driving motor 16, and the position sensor 33 is arranged corresponding to the detected terminal 38.

In an embodiment of this embodiment, the position sensor is an electromagnetic position sensor, a photoelectric position sensor, a differential voltage sensor, an eddy current sensor, a capacitive sensor, a reed pipe sensor, or a hall sensor.

The drum washing machine of the embodiment comprises a locking mechanism 35 for locking the rotation of the inner drum, the position detection device is used for detecting whether the inner drum 17 is locked in place after the locking mechanism 35 locks the inner drum 17, and/or when the position detection device detects that the inner drum 17 rotates to a set position, the locking mechanism 35 locks the inner drum 17.

Further, the locking mechanism 35 is installed on the side wall of the outer cylinder 18 close to the driving motor 16, the locking mechanism 35 includes a locking rod 40 moving telescopically and a locking motor 41 driving the locking rod 40 to move telescopically, a locking groove 39 matching with the locking rod 40 is arranged on the rotor of the driving motor 16 corresponding to the locking rod 40, and when the locking rod 40 is driven by the locking motor 41 to extend and insert into the locking groove 39, the inner cylinder 17 is locked.

In the drum washing machine of the embodiment, an inner cylinder drain 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 drain hole, and a push rod mechanism 10 for pushing the one-way valve plug open to drain water is installed on the outer cylinder; the locking mechanism 35 locks the inner cylinder 17, and then the push rod mechanism 10 pushes the one-way valve plug 11 open for drainage.

Furthermore, the ejector rod mechanism is arranged on the outer barrel and comprises an ejector rod which moves in a telescopic mode and an ejector rod motor which drives the ejector rod to move in a telescopic mode, and the ejector rod penetrates through the barrel wall of the outer barrel and is inserted into the water discharging hole of the inner barrel to jack the one-way valve plug open for water discharging.

The drum washing machine of the embodiment comprises a main controller, wherein the position detection sensor, the locking motor and the ejector rod motor are electrically connected with the main controller.

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

The washing machine of the present embodiment has a position sensor 33 provided on the outer tub 18 and the driving motor 16, specifically, on the rear portion of the outer tub 18 and the rotor frame that the driving motor 16 rotates.

The position sensor 33 senses the position of the detected terminal 38 on the rotating rotor frame, converts the position into a signal, and feeds the signal back to the washing machine main controller 4 through a line 43.

The position of the terminal to be detected 38 on the rotor frame corresponds to the position of the rotating inner cylinder.

The washing machine of the embodiment is provided with a mounting bracket 32, a fixed knot 34 is fixed on the outer cylinder, and a locking motor, a locking rod and a position sensor are arranged on the mounting bracket 32; the rotor frame of the driving motor has a locking groove and a detected terminal 38.

EXAMPLE six

As shown in fig. 17 to 18, the drum washing machine of the present embodiment includes an inner drum 17 and an outer drum 18, the inner drum 17 is a non-porous inner drum and holds washing water when washing clothes, the outer drum 18 is coaxially disposed outside the inner drum 17 and collects water discharged from the inner drum 17 and discharges the water through a drain line, and a position detecting device disposed on the outer drum 18 and detecting a position of the inner drum.

Further, the position detecting device includes a position sensor 37 and a detected terminal 38, the detected terminal 38 is disposed on the inner cylinder 17, and the position sensor 37 is disposed on the inner wall of the outer cylinder 18 and is corresponding to the detected terminal 38 on the inner cylinder 17.

Preferably, the detected terminal 38 is disposed on the sidewall of the inner cylinder 17, the position sensor 37 is disposed on the inner sidewall of the outer cylinder 18, and the circumference of the detected terminal 38 on the inner cylinder 17 is concentric with the circumference of the outer cylinder 18 on which the position sensor 37 is disposed.

Preferably, the position sensor 37 is provided on an inner sidewall of an upper portion of the outer tub 18.

Preferably, the position sensor is an electromagnetic position sensor, a photoelectric position sensor, a differential voltage sensor, an eddy current sensor, a capacitive sensor, a reed pipe sensor, or a hall sensor.

The drum washing machine of the embodiment comprises a locking mechanism 35 for locking the rotation of the inner drum, the position detection device is used for detecting whether the inner drum 17 is locked in place after the locking mechanism 35 locks the inner drum 17, and/or when the position detection device detects that the inner drum 17 rotates to a set position, the locking mechanism 35 locks the inner drum.

Further, the locking mechanism 35 is installed on the outer cylinder 18, the locking mechanism 35 includes a locking rod which moves telescopically and a locking motor which drives the locking rod to move telescopically, a locking groove 39 which is matched with the locking rod is arranged on the inner cylinder 17 corresponding to the locking rod, and when the locking rod is driven by the locking motor to extend and insert into the locking groove 39, the inner cylinder 17 is locked.

As shown in fig. 8, as an embodiment of the present embodiment, a lifting rib 43 is installed at the locking groove 39, so that the locking groove 39 is hidden. Further, the detected terminal 38 is mounted in the lifting rib 43.

As an embodiment of the present embodiment, an inner cylinder drain hole is formed on a side wall of the inner cylinder 17, a normally closed one-way valve plug 11 is mounted 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 mounted on the outer cylinder 18; the locking mechanism 35 locks the inner cylinder 17, and then the push rod mechanism 10 pushes the one-way valve plug 11 open for drainage.

Further, the ejector rod mechanism 10 is installed on the outer cylinder 18, the ejector rod mechanism 10 comprises an ejector rod which moves in a telescopic manner and an ejector rod motor which drives the ejector rod to move in a telescopic manner, and the ejector rod penetrates through the cylinder wall of the outer cylinder and is inserted into the water discharge hole of the inner cylinder to jack the one-way valve plug open for water discharge.

The drum washing machine of the embodiment comprises a main controller 4, and the position detection sensor, the locking motor and the ejector rod motor are electrically connected with the main controller.

EXAMPLE seven

A control method of a drum washing machine, the drum washing machine comprises an inner drum, a position detection device for detecting the position of the inner drum and a locking mechanism for locking the inner drum to rotate, the inner drum is a non-porous inner drum and is used for containing washing water when washing clothes, the control method comprises the following steps:

and when the position detection device detects that the inner cylinder rotates to a set position, the locking mechanism is controlled to lock the inner cylinder, and/or after the locking mechanism locks the inner cylinder, the position detection device detects whether the locking mechanism is in place.

As shown in fig. 19, the washing machine includes a driving motor for driving the inner cylinder to rotate, during the washing or rinsing process, the washing machine controls the driving motor to decelerate and execute the inner cylinder rotation stopping process, when the inner cylinder rotation speed is reduced below the set safe rotation speed, if the position detection device detects that the inner cylinder rotates to the set position, the driving motor is controlled to stop rotating and keep the inner cylinder position still, and the locking mechanism is controlled to lock the inner cylinder for draining.

The washing machine comprises a driving motor for driving an inner barrel to rotate, wherein in a washing or rinsing procedure, the washing machine controls the driving motor to decelerate and execute an inner barrel rotation stopping procedure, when the rotating speed of the inner barrel is reduced to be below a set safe rotating speed, a locking mechanism is controlled to lock the inner barrel, if the position detection device detects that the inner barrel rotates to a set position, water is drained, and otherwise, the water is not drained.

In the embodiment, the side wall of the inner cylinder is provided with an inner cylinder drain hole, the inner cylinder drain hole is provided with a normally closed one-way valve plug, and the outer cylinder is provided with a mandril mechanism for jacking the one-way valve plug to drain water; the drainage program comprises: and after the locking mechanism locks the inner barrel, the ejector rod mechanism is controlled to jack the unidirectional valve plug open for drainage.

The washing machine comprises a driving motor for driving an inner barrel to rotate, in a dehydration program, the washing machine controls the driving motor to decelerate and execute an inner barrel rotation stopping program, when the rotating speed of the inner barrel is reduced to be below a set safe rotating speed, if a position detection device detects that the inner barrel rotates to a set position, the driving motor is controlled to stop rotating and keep the position of the inner barrel still, a locking mechanism is controlled to lock the inner barrel, the dehydration program is finished, and a door lock is released.

The washing machine comprises a driving motor for driving an inner barrel to rotate, wherein in a dehydration program, the washing machine controls the driving motor to decelerate and execute an inner barrel rotation stopping program, when the rotating speed of the inner barrel is reduced to be below a set safe rotating speed, a locking mechanism is controlled to lock the inner barrel, the dehydration program is ended, a door lock is released, and if a position detection device does not detect that the inner barrel rotates to a set position, an alarm is given.

The drum washing machine comprises a driving motor and an inner drum shaft, wherein the driving motor comprises a stator and a rotor, the rotor is fixedly connected with the inner drum shaft to drive an inner drum to rotate, the position detection device comprises a position sensor and a detected terminal, the detected terminal is arranged on the rotor, and the position sensor is fixed at a position corresponding to the detected terminal;

when the rotor rotates to the position where the detected end is opposite to the position sensor, the inner cylinder rotates to the set position, and/or after the locking mechanism locks the inner cylinder, the rotor rotates to the position where the detected end is opposite to the position sensor, and the inner cylinder is locked in place.

This embodiment locking mechanism install on the urceolus be close to driving motor's lateral wall, locking mechanism includes telescopic motion's locking pole and driving locking pole telescopic motion's locking motor, correspond the locking pole setting rather than complex locking groove on driving motor's the rotor, when the locking pole stretches out under locking motor's drive and inserts the locking inslot, the inner tube is locked.

The roller washing machine comprises an outer barrel, wherein the outer barrel is coaxially arranged outside the inner barrel and used for collecting water discharged from the inner barrel and discharging the water through a drainage pipeline;

This embodiment locking mechanism install on the urceolus, locking mechanism includes telescopic motion's locking pole and the locking motor who drives locking pole telescopic motion, correspond the locking pole setting on the inner tube rather than complex locking groove, when the locking pole stretches out under locking motor's drive and inserts the locking inslot, the inner tube is locked.

Example eight

As shown in fig. 20-22, a drum washing machine of the present embodiment includes an inner drum 17, the inner drum 17 is used for containing washing water when washing clothes, the inner drum 17 has an inner drum opening, an inner drum bottom opposite to the inner drum opening, and an inner drum wall surrounding and connected with the inner drum bottom to form an inner containing cavity, the inner drum wall has an inner diameter expanding section 44/an inner diameter reducing section 46, an inner diameter of the inner diameter expanding section 44/the inner diameter reducing section 46 gradually increases/decreases along a direction from the inner drum opening to the inner drum bottom, and a drainage device 45 is disposed on the inner drum wall near a maximum inner diameter end of the inner diameter expanding section/the inner diameter reducing section.

The inner cylinder wall of the inner cylinder of the drum washing machine of the present embodiment has an inner diameter expansion section 44/an inner diameter reduction section 46, and when water is drained, the drainage device 45 is opened by the centrifugal force generated by the rotation of the inner cylinder, and the washing water in the inner cylinder, which is applied by the centrifugal force in the direction of the cylinder wall of the inner diameter expansion section 44/the inner diameter reduction section 46, moves along the cylinder wall of the inner diameter expansion section 44/the inner diameter reduction section 46 toward the end with the largest inner diameter, and is drained by the drainage device 45 disposed at the end with the largest inner diameter of the inner diameter expansion section/the inner diameter reduction. Therefore, the inner barrel structure of the drum washing machine can effectively realize the high-efficiency dehydration property and the centrifugal drainage property of the non-porous inner barrel aiming at the non-porous inner barrel and the centrifugal drainage mode.

As shown in fig. 20 and 21, in an embodiment of the present invention, the inner cylindrical wall has an inner diameter-enlarged section 44 and an inner diameter-flat section, and the inner diameter of the inner diameter-flat section is equal to or larger than the inner diameter of the largest end of the inner diameter-enlarged section 44; the inner diameter expanding section 44 gradually transits and increases along the direction from the inner cylinder opening to the inner cylinder bottom, the inner diameter straight section is connected with the end with the largest inner diameter of the inner diameter expanding section 44, and the drainage device 45 is arranged on the inner diameter straight section. The inner diameter expansion section 44 of the present embodiment is used to realize the convergence of the washing water toward the end with the largest inner diameter, and the end with the largest inner diameter is connected to a straight inner diameter section, so that the converged water flow is collected to the end and discharged through the drainage device 45, and the drainage device 45 is opened by a centrifugal force, and is normally opened by a centrifugal force better applied to the straight inner diameter section.

Further, the inner diameter straight section is of a cylindrical tubular structure, one end of the inner diameter straight section is connected with the end with the largest inner diameter of the inner diameter expanding section 44, and the other end of the inner diameter straight section is connected with the circumferential periphery of the inner barrel bottom; the drainage device 45 includes at least one drainage hole disposed on the circumference of the inner diameter straight section and a centrifugal valve mounted on the drainage hole to control the conduction/closing of the drainage hole.

As shown in fig. 22, as another embodiment of this embodiment, the inner cylindrical wall has a reduced inner diameter section 46 and a straight inner diameter section, and the inner diameter of the straight inner diameter section is greater than or equal to the inner diameter of the largest end of the reduced inner diameter section; the inner diameter reduced section is gradually reduced in a transitional manner along the direction from the opening of the inner cylinder to the bottom of the inner cylinder, the inner diameter straight section is connected with the end with the largest inner diameter of the inner diameter reduced section, and the drainage device is arranged on the inner diameter straight section. In this embodiment, the reduced inner diameter section 46 functions in the same manner as the enlarged inner diameter section 44, except for the inner diameter straight section and the position where the drain is disposed.

Further, the inner diameter straight section is of a cylindrical structure, one end of the inner diameter straight section is connected with the end with the largest inner diameter of the inner diameter reduced section 46, and the other end is provided with an inner cylinder sealing door which can be opened/closed; the drainage device comprises at least one drainage hole arranged on the circumference of the inner diameter straight section and a centrifugal valve which is arranged on the drainage hole and controls the conduction/closing of the drainage hole.

Whether an inner diameter expanding section or an inner diameter reducing section is adopted, the axial length of the inner diameter expanding section 44/the inner diameter reducing section 46 is H, the axial length of the inner diameter straight section is H, and H is more than or equal to H; the included angle between the side wall of the inner diameter expansion section/the inner diameter reduction section and the horizontal plane is A, and A satisfies the following conditions: a is more than or equal to 0 degree and less than or equal to 45 degrees.

In one embodiment of this embodiment, the inner diameter expanding section 44/the inner diameter reducing section 46 are integrally formed with the inner diameter straight section.

Example nine

As shown in fig. 23-28, a drum washing machine of the present embodiment includes an inner drum 17, the inner drum 17 is used for containing washing water when washing clothes, the inner drum 17 has an inner drum opening, an inner drum bottom opposite to the inner drum opening, and an inner drum wall surrounding and connected with the inner drum bottom to form an inner containing cavity, the inner drum wall has an inner diameter expanding section 44 and an inner diameter reducing section 46, the inner diameter of the inner diameter expanding section 44 gradually increases along the direction from the inner drum opening to the inner drum bottom, the inner diameter of the inner diameter reducing section 46 gradually decreases along the direction from the inner drum opening to the inner drum bottom, and the inner drum wall is provided with a drainage device 45 respectively near the ends of the inner diameters of the inner diameter expanding section 44 and the inner diameter reducing.

The inner cylinder wall of the inner cylinder of the drum washing machine of the embodiment has an inner diameter expansion section 44 and an inner diameter reduction section 46, when the water is discharged, the water discharging device 45 is opened by the centrifugal force generated by the rotation of the inner cylinder, and the washing water in the inner cylinder, which is acted by the component force of the centrifugal force in the direction of the cylinder wall of the inner diameter expansion section 44 and the inner diameter reduction section 46, moves to the end with the largest inner diameter along the cylinder wall of the inner diameter expansion section 44 and the inner diameter reduction section 46, and is discharged by the water discharging device 45 arranged at the end with the largest inner diameter of the inner diameter expansion section. Therefore, the inner barrel structure of the drum washing machine can effectively realize the high-efficiency dehydration property and the centrifugal drainage property of the non-porous inner barrel aiming at the non-porous inner barrel and the centrifugal drainage mode.

As shown in fig. 23 and 24, as an embodiment of this embodiment, the end with the smallest inner diameter of the inner diameter expansion section 44 is close to the inner cylinder opening, and the end with the largest inner diameter of the inner diameter expansion section 44 extends towards the middle of the inner cylinder wall; the end with the smallest inner diameter of the inner diameter reduced section 46 is close to the bottom of the inner barrel, and the end with the largest inner diameter of the inner diameter reduced section 46 extends towards the middle of the inner barrel wall to form an inner barrel with the smaller inner diameters at two ends and the larger inner diameter in the middle. Like this, at the drainage in-process, the rivers in the inner tube are assembled to the middle part by drainage device 45 discharge by both ends, are favorable to high-efficient dehydration nature and centrifugal drainage nature more.

Specifically, the axial length of the inner diameter expansion section 44 is H1, the axial length of the inner diameter reduction section 46 is H2, H1 is equal to or greater than H2, and preferably, H1 is H2;

the included angle between the lateral wall of the inner diameter expansion section and the horizontal plane is A, the included angle between the lateral wall of the inner diameter reduction section and the horizontal plane is B, and the A, B satisfies the following conditions: a is more than or equal to 0 degree and less than or equal to 45 degrees.

As shown in fig. 25 and 26, as an embodiment of the present embodiment, the drum washing machine includes an inner diameter straight section 47, the inner diameter straight section 47 is located at the middle portion of the inner drum, and both ends of the inner diameter straight section 47 are respectively connected to the end of the inner diameter enlarged section 44 with the largest inner diameter and the end of the inner diameter reduced section 46 with the largest inner diameter; the inner diameter straight section 47 is provided with a drainage device 45. Thus, a centrifugally opening drain is provided in the inner diameter straight section 47 to ensure that it is opened by centrifugal force as the inner barrel rotates to ensure the effectiveness of the drainage.

Specifically, the axial length of the inner diameter expanding section 44 is H1, the axial length of the inner diameter reducing section 46 is H2, and the axial length of the inner diameter straight section is H3;

h1 is more than or equal to H2 is more than or equal to H3, and preferably H1 is more than H2 and more than H3.

The contained angle between the lateral wall of internal diameter expansion section and the horizontal plane is A, and the contained angle between the lateral wall of internal diameter reduction section and the horizontal plane is B, the straight section of internal diameter be cylindrical tubular structure, the contained angle between the straight section of internal diameter and the horizontal plane is C, A, B, C satisfy: a is more than or equal to 0 degree and less than or equal to 45 degrees, and C is 0 degree.

As shown in fig. 27 and 28, as an embodiment of this embodiment, this embodiment is basically the same as the embodiment of fig. 25 and 26 except for the differences of H1 < H3 and H2 < H3.

As another embodiment of this embodiment, the end with the largest inner diameter of the reduced inner diameter section 46 is close to the inner cylinder opening, and the end with the smallest inner diameter of the reduced inner diameter section 46 extends toward the middle of the inner cylinder wall; the end with the largest inner diameter of the inner diameter expansion section 44 is close to the bottom of the inner barrel, the end with the smallest inner diameter of the inner diameter expansion section 44 extends towards the middle of the inner barrel wall to form an inner barrel with the larger inner diameters at two ends and the smaller inner diameter in the middle, a first drainage device is arranged at the end, close to the largest inner diameter of the inner diameter expansion section, of the inner barrel wall, and a second drainage device is arranged at the end, close to the largest inner diameter of the inner diameter reduction section, of the inner barrel wall. This embodiment provides an inner tube that the internal diameter is big in the middle of the internal diameter is little, when carrying out the drainage, the water in the inner tube assembles to both ends and is discharged by drainage device, has better high-efficient dehydration nature and centrifugal drainage nature equally.

Specifically, the axial length of the inner diameter reduced section 46 is H4, the axial length of the inner diameter enlarged section 44 is H5, H4 is equal to or greater than H5, and preferably, H4 is H5;

the included angle between the side wall of the reduced inner diameter section 46 and the horizontal plane is D, the included angle between the side wall of the enlarged inner diameter section 44 and the horizontal plane is E, and the D, E satisfies the following conditions: d is more than or equal to 0 degree and less than or equal to E is less than or equal to 45 degrees.

Further, the drum washing machine comprises a first inner diameter straight section and a second inner diameter straight section, wherein the first inner diameter straight section is connected with the end with the largest inner diameter of the inner diameter reduced section, and the second inner diameter straight section is connected with the end with the largest inner diameter of the inner diameter expanded section; the first drainage device is arranged on the first inner diameter straight section, and the second drainage device is arranged on the second inner diameter straight section.

Specifically, the axial length of the reduced inner diameter section is H4, the axial length of the enlarged inner diameter section is H5, the axial length of the first straight inner diameter section is H6, the axial length of the second straight inner diameter section is H7, H4 is more than or equal to H5 is more than or equal to H6 which is equal to H7, and preferably, H4 is more than or equal to H5 and more than or equal to H6 which is equal to H7;

the included angle between the lateral wall of the internal diameter reduction section and the horizontal plane is D, the included angle between the lateral wall of the internal diameter expansion section and the horizontal plane is E, the first internal diameter straight section and the second internal diameter straight section are both of cylindrical structures, the included angle between the first internal diameter straight section and the horizontal plane is F, the included angle between the second internal diameter straight section and the horizontal plane is G, and the D, E, F, G meets the following requirements: d is more than or equal to 0 degree and less than or equal to E is less than or equal to 45 degrees, and F, G is 0 degree.

Example ten

As shown in fig. 29 to 32, the drum washing machine of the present embodiment includes an inner drum 17, the inner drum 17 is used for containing washing water when washing clothes, the inner drum 17 is provided with a plurality of annular water collecting grooves along the circumferential direction of the inner wall and an axial water collecting groove 50 which is communicated with the annular water collecting grooves (48, 49) along the axial direction; and a drainage device 45 is arranged in the annular water collecting grooves (48, 49).

The inner wall of the inner barrel of the drum washing machine of the embodiment is provided with annular water collecting grooves (48, 49), and N wave crest and trough structures are formed on the wall surface of the inner barrel, so that centrifugally discharged water is collected in the annular water collecting grooves (48, 49); the inner wall of the inner barrel is provided with an axial groove structure, the axial grooves are communicated with the annular water collecting grooves (48 and 49), water in each annular water collecting groove (48 and 49) is collected faster and easier and then discharged through the drainage device, and efficient drainage and dehydration drainage are achieved.

As an embodiment of this embodiment, the annular water collection grooves comprise a plurality of first annular water collection grooves 48 and at least one second annular water collection groove 49, the first annular water collection grooves 48 and the second annular water collection groove 49 are communicated with each other through an axial water collection groove 50, the groove width in the second annular water collection groove 49 is larger than the groove width in the first annular water collection groove 48, and the drainage device 45 is arranged in the second water collection groove.

The inner wall of the inner cylinder of the embodiment is provided with first annular water collecting grooves 48, N wave crest and trough structures are formed on the wall surface of the inner cylinder, and centrifugal discharge water is collected in each first annular water collecting groove 48.

The inner wall of the inner barrel has a second annular water collection groove 49, which is convenient for collecting all the centrifugal collected water, and has a hole structure which is provided with a centrifugal valve seal and can be opened only under the condition of centrifugal force with a certain rotating speed.

The inner wall of the inner barrel is provided with an axial water collecting groove 50, the axial water collecting groove 50 is communicated with the first annular water collecting groove 48 and the second annular water collecting groove 49, so that water in each first annular water collecting groove 48 is collected in the second annular water collecting groove 49 more quickly and easily and is discharged through a hole structure on the second annular water collecting groove 49, and efficient dehydration performance and drainage performance are realized.

As an implementation manner of this embodiment, the inner cylinder 17 is a cylindrical structure with a constant inner diameter, and the inner cylinder 17 has an inner cylinder opening, an inner cylinder bottom opposite to the inner cylinder opening, and an inner cylinder wall that forms an inner accommodating cavity by being surrounded and connected with the inner cylinder bottom; a second annular water collecting tank 49 is arranged in the middle of the inner barrel wall, and a plurality of first annular water collecting tanks 48 are sequentially arranged in the inner barrel wall between the inner barrel opening and the second annular water collecting tank 49 and between the inner barrel bottom and the second annular water collecting tank 49 along the axial direction of the inner barrel.

Preferably, a plurality of axial water collecting grooves 50 are uniformly arranged along the circumferential direction of the inner cylinder wall and respectively penetrate through and communicate the second annular water collecting groove 49 and the first annular water collecting groove 48.

Further, the axial length between the second annular water collecting groove 49 and the inner cylinder opening is L1, the axial length between the second annular water collecting groove 49 and the inner cylinder bottom is L2, and the L1 and the L2 satisfy: l1 is more than or equal to L2.

EXAMPLE eleven

The tenth embodiment can be combined with the eighth and ninth embodiments, respectively, to form a new technical solution:

in the drum washing machine of the present embodiment, the inner diameter expanding section/the inner diameter reducing section and/or the inner diameter straight section of the inner drum are/is provided with an annular water collecting groove along the circumferential direction of the inner wall thereof and an axial water collecting groove which penetrates and communicates with the annular water collecting groove along the axial direction thereof.

Furthermore, a plurality of first annular water collecting grooves and a second annular water collecting groove arranged at the end with the largest inner diameter are sequentially arranged on the inner wall of the inner diameter expanding section/the inner diameter reducing section along the axial direction of the inner wall, the axial water collecting groove sequentially penetrates and is communicated with the first annular water collecting grooves and the second annular water collecting grooves, and the drainage device is arranged in the second annular water collecting groove;

preferably, the width of the grooves in the second annular water collection groove is larger than the width of the grooves in the first annular water collection groove.

Furthermore, a plurality of first annular water collecting grooves are sequentially arranged on the inner wall of the inner diameter expanding section/the inner diameter reducing section along the axial direction of the inner diameter expanding section/the inner diameter reducing section, at least one third annular water collecting groove is arranged on the inner wall of the inner diameter straight section, and the axial water collecting grooves sequentially penetrate through and communicate the first annular water collecting grooves and the third annular water collecting grooves;

preferably, the groove width in the third annular water collection groove is larger than the groove width in the first annular water collection groove.

Example twelve

A control method of a drum washing machine comprises an inner drum, washing water is contained in the inner drum when clothes are washed, a drain hole is formed in the side wall of the inner drum, a centrifugal valve for controlling the conduction/closing of the drain hole is installed on the drain hole, and the control method comprises the following steps: in the washing process of the washing machine, the rotating speed of the inner barrel is controlled to reach or exceed the set rotating speed N0, and the centrifugal valve is subjected to centrifugal force to open the drain hole for draining water in the inner barrel.

The drainage device of the embodiment adopts the centrifugal valve, the control method opens the centrifugal valve to realize drainage by controlling the rotation of the inner cylinder to generate centrifugal force, and drainage and dehydration of the drum washing machine with the non-porous inner cylinder are realized by a centrifugal valve and program control mode.

As an implementation manner of this embodiment, after the washing machine executes a washing procedure or a rinsing procedure, the rotation speed of the inner drum is controlled to reach a first rotation speed N1 and is maintained for a set time t1, where N1 is greater than or equal to N0, and N0 is greater than the rotation speed of the inner drum in the washing procedure or the rinsing procedure; when the rotation time of the inner cylinder keeping rotating speed N1 reaches t1, controlling the inner cylinder to stop rotating and entering the next procedure;

preferably, N1 is 110-400 rpm, more preferably 170 + -50 rpm, and still more preferably 150 + -20 rpm;

preferably, t1 ranges between 0.1 and 5 minutes, more preferably between 1 and 2 minutes.

Further, the washing machine includes a weighing device for weighing the weight in the inner tub, the weighing device detects a weight W0 in the inner tub before the inner tub starts to rotate at N1, the weighing device detects a weight W1 in the inner tub after the rotation time reaches t1, and the control system judges whether the water is normally drained according to comparison between W1 and W0.

Further, the control system judges whether the drainage is abnormal or not by comparing the value k of W1/W0, if the k is more than or equal to 0.7, the control system judges that the drainage is abnormal and gives an alarm, and if not, the drainage is normal.

As another implementation manner of this embodiment, after the washing machine performs a washing procedure or a rinsing procedure, the rotation speed of the inner drum is controlled to reach a first rotation speed N1, where N1 is greater than or equal to N0, and N0 is greater than the rotation speed of the inner drum in the washing procedure or the rinsing procedure; and after the water in the inner cylinder is drained, controlling the inner cylinder to stop rotating and entering the next procedure.

Further, the washing machine comprises a weighing device for weighing the weight in the inner barrel, and in the process that the inner barrel is controlled by the washing machine to keep rotating by N1, the control system judges whether the water drainage is finished according to the weight value in the inner barrel detected by the weighing device in real time.

Further, the control system judges whether the drainage is finished according to the weight value in the inner cylinder detected by the weighing device in real time and comprises:

the weighing device detects the weight values W0, W1, W2, … … and W in the inner cylinder in real time_t；

Making the weighted values of adjacent time difference, and recording n 1-W1-W0, n 2-W2-W1 and … …, and nt-W (Wt) - (Wt-1);

when nt remains unchanged for a certain time and approaches 0, the drainage is completed.

Furthermore, the control system judges whether the drainage is normal or not by comparing the change conditions of n1, n2, … … and nt, and if n 1-n 2-nt … … -nt-0, the control system judges that the drainage is abnormal and gives an alarm.

Further, the washing machine performs a spinning course in which the minimum spinning speed N2 is equal to or greater than N0.

As shown in fig. 33, a drum washing machine adopting the control method of the present embodiment.

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. A drum washing machine comprises an inner drum, wherein washing water is contained in the inner drum when clothes are washed, and the drum washing machine is characterized in that the inner drum is provided with a plurality of annular water collecting grooves along the circumferential direction of the inner wall of the inner drum and axial water collecting grooves which penetrate and are communicated with the annular water collecting grooves along the axial direction of the inner drum; and a drainage device is arranged in the annular water collecting tank.

2. A drum washing machine according to claim 1, characterized in that the annular water collection grooves comprise a plurality of first annular water collection grooves and at least one second annular water collection groove, the first annular water collection grooves and the second annular water collection grooves are communicated with each other through axial water collection grooves, the groove width in the second annular water collection grooves is larger than that in the first annular water collection grooves, and the drainage device is arranged in the second water collection grooves.

3. A drum washing machine according to claim 2, characterized in that the inner drum is a cylindrical structure with a constant inner diameter, the inner drum is provided with an inner drum opening, an inner drum bottom opposite to the inner drum opening and an inner drum wall which is connected with the inner drum bottom in an enclosing way to form an inner accommodating cavity; a second annular water collecting tank is arranged in the middle of the inner barrel wall, and a plurality of first annular water collecting tanks are sequentially arranged in the inner barrel wall between the inner barrel opening and the second annular water collecting tank and between the inner barrel bottom and the second annular water collecting tank along the axial direction of the inner barrel;

4. A drum washing machine according to claim 2, characterized in that the axial length between the second annular water collecting groove and the inner drum opening is L1, the axial length between the second annular water collecting groove and the inner drum bottom is L2, and the L1 and the L2 satisfy: l1 is more than or equal to L2.

5. A drum washing machine according to claim 1, characterized in that the inner drum wall has an inner diameter expansion section/an inner diameter reduction section, the inner diameter of the inner diameter expansion section/the inner diameter reduction section gradually increases/decreases along the direction from the opening of the inner drum to the bottom of the inner drum, a plurality of first annular water collecting grooves and a second annular water collecting groove arranged at the end with the largest inner diameter are sequentially arranged on the inner wall of the inner diameter expansion section/the inner diameter reduction section along the axial direction, the axial water collecting groove sequentially penetrates and is communicated with the first annular water collecting grooves and the second annular water collecting groove, and the groove width in the second annular water collecting groove is larger than that in the first annular water collecting groove; the drainage device is arranged in the second annular water collecting tank.

6. A drum washing machine according to claim 5, characterized in that the inner drum wall has an inner diameter straight section, the inner diameter of the inner diameter straight section is equal to or larger than the inner diameter of the largest end of the inner diameter enlarged section/the inner diameter reduced section; the inner diameter straight section is connected with the end with the largest inner diameter of the inner diameter expanding section/the inner diameter reducing section; the inner wall of the inner diameter expanding section/the inner diameter reducing section is sequentially provided with a plurality of first annular water collecting grooves along the axial direction, the inner wall of the inner diameter straight section is provided with at least one second annular water collecting groove, the groove width in the second annular water collecting groove is larger than that in the first annular water collecting groove, and the axial water collecting grooves sequentially penetrate and communicate the first annular water collecting grooves and the second annular water collecting grooves.

7. A drum washing machine according to claim 5, characterized in that the inner drum wall is provided with an inner diameter expanding section and an inner diameter reducing section, the inner diameter minimum end of the inner diameter expanding section is close to the inner drum opening, and the inner diameter maximum end of the inner diameter expanding section extends towards the middle part of the inner drum wall; the inner diameter minimum end of the inner diameter reduced section is close to the inner barrel bottom, and the inner diameter maximum end of the inner diameter reduced section extends towards the middle of the inner barrel wall to form an inner barrel with small inner diameters at two ends and large inner diameter in the middle; the inner walls of the inner diameter expanding section and the inner diameter reducing section are sequentially provided with a plurality of first annular water collecting grooves along the axial direction, and the second annular water collecting grooves are arranged on the cylinder wall between the inner diameter maximum end of the inner diameter expanding section and the inner diameter maximum end of the inner diameter reducing section.

8. A drum washing machine according to claim 5, characterized in that the inner drum wall is provided with an inner diameter expanding section and an inner diameter reducing section, the inner diameter end of the inner diameter reducing section with the largest inner diameter is close to the inner drum opening, and the end with the smallest inner diameter of the inner diameter reducing section extends towards the middle part of the inner drum wall; the end with the largest inner diameter of the inner diameter expansion section is close to the bottom of the inner barrel, and the end with the smallest inner diameter of the inner diameter expansion section extends towards the middle part of the inner barrel wall to form an inner barrel with two large inner diameters and a small inner diameter in the middle; the inner walls of the inner diameter expanding section and the inner diameter reducing section are sequentially provided with a plurality of first annular water collecting grooves along the axial direction, and the number of the second annular water collecting grooves is two, and the two first annular water collecting grooves are respectively arranged at the inner diameter maximum end of the inner diameter expanding section and the inner diameter maximum end of the inner diameter reducing section.

9. A drum washing machine according to claim 7 or 8, characterized by further comprising an inner diameter straight section connected to the end of the inner diameter enlarged section having the largest inner diameter and the end of the inner diameter reduced section having the largest inner diameter, wherein the second annular water collection tank is disposed on the inner diameter straight section.

10. A control method of a drum washing machine comprises an inner drum, washing water is contained in the inner drum when clothes are washed, a drain hole is formed in the side wall of the inner drum, a drainage device for controlling the conduction/closing of the drainage device is installed on the drain hole, the drainage device is a centrifugal valve, and the control method is characterized by comprising the following steps: in the washing process of the washing machine, the rotating speed of the inner barrel is controlled to reach or exceed the set rotating speed N0, and the centrifugal valve is subjected to centrifugal force to open the drain hole for draining water in the inner barrel.