CN111394935B

CN111394935B - Control method of drum washing machine and drum washing machine

Info

Publication number: CN111394935B
Application number: CN201811638088.4A
Authority: CN
Inventors: 赵志强; 李以民; 许升; 吕佩师; 劳春峰
Original assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2023-09-15
Anticipated expiration: 2038-12-29
Also published as: WO2020135377A1; CN111394935A

Abstract

The invention provides a control method of a drum washing machine and the washing machine, the control method of the drum washing machine comprises an inner drum, washing water is contained in the inner drum when clothes are washed, a drain hole is arranged on the side wall of the inner drum, and a centrifugal valve for controlling the connection/disconnection of the drain hole is arranged on the drain hole, and the control method is characterized in that the control method comprises the following steps: in the washing process of the washing machine, the rotation speed of the inner cylinder is controlled to reach or exceed the set rotation speed N0, and the centrifugal valve is subjected to centrifugal force to open the water drain hole to drain the inner cylinder. The water draining device adopts the centrifugal valve, the centrifugal valve is opened by controlling the rotation of the inner cylinder to generate centrifugal force to drain water, and the water draining and the dehydration of the drum washing machine with the pore-free inner cylinder are realized by the centrifugal valve and a program control mode.

Description

Control method of drum washing machine and drum washing machine

Technical Field

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

Background

The washing machine is used as a household appliance which is most 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 also has certain drawbacks, such as long time consumption and large water consumption, and along with the development of society, water resources become more and more important as an important natural resource, so that the water saving awareness of people is improved, and how to realize the water saving function of the washing machine is particularly important.

In order to solve the water saving problem of the washing machine, some patents are also provided, such as patent number 201410215346.3, and Chinese patent invention patent of a drum washing machine is named, the invention relates to a drum washing machine, which comprises a box body, an inner drum and an outer drum are arranged in the box body, a door seal is arranged between the outer drum and the box body, the inner drum is connected with a driving device, the inner drum is a pore-free inner drum, the inner drum is a conical drum with small diameter at the bottom of the drum and large diameter at the opening of the drum, the opening of the inner drum is folded inwards 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 rapid washing water heating device, the other end of the water inlet guide pipe penetrates through the door seal and stretches into the inner drum, and a water outlet and a water pressure detection device are arranged on the outer drum. According to the technical scheme, the inner cylinder is a non-porous inner cylinder, water inlet of the inner cylinder is realized through the water inlet guide pipe arranged on the door seal, and water is discharged 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 non-porous inner drum, but only designs the inner drum of existent drum washing machine into non-porous structure, so that its practical significance is very small. Because the clothes are washed by a certain amount of washing water, if the soaking effect is to be realized, a certain amount of water is required to be stored in the nonporous inner cylinder, so that the burden of a motor is increased, and the problems of power consumption and the like are also caused. In addition, the mode of intaking of the drum washing machine disclosed by the patent is through the door seal, because the main effect of the door seal is to realize the sealing of the nozzle of the outer drum of the washing machine, the sealing effect of the door seal is easily influenced by arranging the intake conduit on the door seal, and the water level of intaking in the inner drum cannot be detected by the patent.

In addition, how to realize water 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 this, the present invention has been made.

Disclosure of Invention

In order to solve the above problems, a first aspect of the present invention provides a control method of a drum washing machine, specifically, the following technical solution is adopted:

the control method of a drum washing machine, the washing machine includes the inner cylinder, hold the wash water in the inner cylinder while washing the clothes, offer the drain hole on the sidewall of the inner cylinder, install the centrifugal valve controlling its on/off on the drain hole, characterized by that, the control method includes: in the washing process of the washing machine, the rotation speed of the inner cylinder is controlled to reach or exceed the set rotation speed N0, and the centrifugal valve is subjected to centrifugal force to open the water drain hole to drain the inner cylinder.

Further, after the washing machine executes a washing program or a rinsing program, controlling the rotating speed of the inner cylinder to reach a first rotating speed N1 and maintaining a set time t1, wherein N1 is more than or equal to N0, and N0 is greater than the rotating speed of the inner cylinder in the washing program or the rinsing program; when the rotation time of the inner cylinder maintaining the rotation speed N1 reaches t1, controlling the inner cylinder to stop rotating to enter the next program;

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

preferably, t1 ranges from 0.1 to 5 minutes, more preferably from 1 to 2 minutes.

Further, the washing machine comprises a weighing device for weighing the weight in the inner cylinder, the weighing device detects the weight W0 in the inner cylinder before the inner cylinder starts to rotate by N1, the weighing device detects the weight W1 in the inner cylinder after the rotation time reaches t1, and the control system judges whether the water drainage is normal according to the comparison of the W1 and the W0.

Further, the control system judges whether the drainage is abnormal by comparing the value k of W1/W0, if k is more than or equal to 0.7, the control system judges that the drainage is abnormal and alarms, otherwise, the drainage is normal.

Further, after the washing machine executes a washing program or a rinsing program, controlling the rotating speed of the inner cylinder to reach a first rotating speed N1, wherein N1 is more than or equal to N0, and N0 is larger than the rotating speed of the inner cylinder in the washing program or the rinsing program; when the water in the inner cylinder is discharged, the inner cylinder is controlled to stop rotating to enter the next procedure.

Further, the washing machine comprises a weighing device for weighing the weight in the inner cylinder, and in the process that the inner cylinder 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 cylinder detected by the weighing device in real time.

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

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

taking the difference between the weighing values of adjacent times, and recording n1=w1-w0, n2=w2-w1, … …, nt= (Wt) - (Wt-1);

when nt remains unchanged for a certain period of time and tends to 0, the drainage is completed.

Further, the control system determines whether the drainage is normal by comparing the change conditions of n1, n2, … …, and nt, and if n1=n2= … … =nt=0, the control system determines that the drainage is abnormal and gives an alarm.

Further, the washing machine performs a dehydration process in which the lowest dehydration rotation speed N2 is equal to or greater than N0.

A second object of the present invention is to provide a drum washing machine employing the control method.

The invention provides a drum washing machine with a pore-free inner drum front open 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 drum and an outer drum. Avoiding the possibility of dirt adhesion between the inner cylinder and the outer cylinder. The health and the user experience of the user are greatly improved, and the water resource is greatly saved.

The water draining device adopts the centrifugal valve, the centrifugal valve is opened by controlling the rotation of the inner cylinder to generate centrifugal force to drain water, and the water draining and the dehydration of the drum washing machine with the pore-free inner cylinder are realized by the centrifugal valve and a program control mode.

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 diagram of a drum washing machine according to a second embodiment of the present invention (first embodiment);

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

fig. 4 is a schematic diagram of a drum washing machine according to the second embodiment of the present invention (third embodiment);

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

FIG. 6 is a partial enlarged view (pressure release state) of FIG. 5 of the triple drum washing machine according to the embodiment of the present invention; the method comprises the steps of carrying out a first treatment on the surface of the

Fig. 7 is a partial enlarged view (pressurized state) of fig. 5 of the triple drum washing machine according to the embodiment of the present invention;

FIG. 8 is a schematic diagram of a fourth drum washing machine according to an embodiment of the present invention;

fig. 9 is a partial enlarged view (pressure release state of first embodiment) of fig. 8 of a drum washing machine according to an embodiment four of the present invention;

fig. 10 is a partial enlarged view (pressurized state of embodiment one) of fig. 8 of a four-drum washing machine according to an embodiment of the present invention;

Fig. 11 is a partial enlarged view of fig. 8 of a drum washing machine according to an embodiment four of the present invention (a pressure release state of the second embodiment);

fig. 12 is a partial enlarged view (a supercharging state of the second embodiment) of fig. 8 of a drum washing machine according to the fourth embodiment of the present invention;

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

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

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

FIG. 16 is a partial enlarged view of FIG. 15 of the fifth drum washing machine in accordance with the embodiment of the present invention;

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

fig. 18 is a schematic diagram 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 implementation of a control method of a seventh drum washing machine according to the 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 a partial enlarged view of FIG. 20 of the eighth drum washing machine in accordance with the embodiment of the present invention;

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

FIG. 23 is a schematic diagram of a ninth drum washing machine according to an embodiment of the present invention;

FIG. 24 is a partial enlarged view of FIG. 23 of a ninth drum washing machine in accordance with the embodiment of the present invention;

Fig. 25 is a schematic view of a drum washing machine according to still another embodiment of the present invention;

FIG. 26 is a partially enlarged view of FIG. 25 of a ninth drum washing machine in accordance with the embodiment of the present invention;

fig. 27 is a schematic view of a drum washing machine according to still another embodiment of the present invention;

FIG. 28 is a partial enlarged view of FIG. 27 of a ninth drum washing machine in accordance with 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 a ten-drum washing machine in accordance with an embodiment of the present invention;

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

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

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

Detailed Description

The following describes a control method of a drum washing machine and the drum washing machine in detail with reference to the accompanying drawings:

as shown in fig. 1 to 18, the present embodiment provides a drum washing machine of a front open type structure of a non-porous inner tub, which has a simple structure and can greatly reduce the amount of washing water used for the washing machine without filling washing/rinsing water between the inner tub and the outer tub. Avoiding the possibility of dirt adhesion between the inner cylinder and the outer cylinder. The health and the user experience of the user are greatly improved, and the water resource is greatly saved.

The drum washing machine of the present embodiment has a housing 19, and the housing 19 includes: top deck 2, front deck, back deck and bottom deck. A foot 9 is fixed on the bottom plate for supporting the whole washing machine. The housing 19 has an outer tube 18 inside, and an inner tube 17 is coaxially provided in the outer tube 18. The outer tube 18 is mainly for collecting the drain water of the inner tube 17 and the drain water of the inner tube 17 by high-speed centrifugal dehydration. The inner drum 17 rotates, preferably with lifting ribs 43, to continuously lift, drop and beat the laundry to wash the laundry. The inner barrel 17 is of non-porous construction. The outer tube 18 has a central mounting hole to which the bearing 12 is mounted and secured. An inner cylinder shaft 13, which is fixedly connected to an inner cylinder 17, passes through the bearing 12 shown and is connected to a drive motor 16. An openable/closable inner cylinder door 6 is arranged on the front cylinder opening of the inner cylinder 17, so that the inner cylinder 17 is of a sealed cabin structure.

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

Example 1

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

the 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, washing water is contained during washing clothes, and a flow sensor 1 for detecting the flow of the water inlet is arranged on the water inlet pipeline.

In this embodiment, the flow sensor 1 is disposed on the water inlet pipe to monitor the flow rate of the water when the water inlet reaches the set water inlet amount, and the water inlet valve 20 is closed to complete water inlet. The flow sensor is adopted in the embodiment, so that the problem of water inflow of the pore-free inner barrel drum washing machine according to the set water level is solved, the washing effect is ensured, the structure is simple, and the control is convenient.

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

Preferably, the flow sensor 1 is arranged on the first 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, wherein the flow sensor 1 is electrically connected with the main controller 4 through a circuit. The main controller 4 can collect the water inflow of the inner cylinder 17 in real time, the water inflow reaches the set water inflow, and the water inlet valve 20 is closed.

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

The flow sensor 1 can be arranged at any position on the water inlet pipe, preferably at the rear part of the water inlet valve 20, and can accurately measure the water flow entering the sealed inner cylinder 17, the flow sensor 1 is connected with the main controller 4, the main controller 4 can collect the water inflow of the inner cylinder 17 in real time, the set water inflow is achieved, and the water inlet valve 20 is closed.

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

Further, 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 pore-free inner cylinder, the drum washing machine of the embodiment comprises an outer cylinder 18, 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 arranged on the inner cylinder drainage hole, and a push rod mechanism 10 for pushing the one-way valve plug 11 open for drainage is arranged 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 one-way valve plug 11 open for drainage after the inner cylinder is locked by the locking mechanism.

In order to realize the dehydration of the inner barrel without holes, a plurality of dehydration holes are formed in the side wall of the inner barrel 17, centrifugal valves are arranged on the dehydration holes, and the centrifugal valves are opened to carry out dehydration and drainage under the action of dehydration centrifugal force.

The embodiment also provides a control method of the drum washing machine, wherein the washing machine executes a washing/rinsing program, in the water inlet process, a flow sensor detects the water inlet flow value in real time, the washing machine calculates the water inlet amount according to the water inlet flow value and the water inlet time, and when the water inlet amount reaches the set water inlet amount of the washing machine, the water inlet is stopped.

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

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

Example two

As shown in fig. 2-4, the drum washing machine of this embodiment includes an inner drum 17 and a water inlet pipeline, the inner drum is a non-porous inner drum, and holds washing water during washing clothes, and further includes a water metering device for metering water inflow, the water inlet pipeline is communicated with the water metering device, and the water metering device is communicated with the inner drum.

The drum washing machine of this embodiment is through setting up water measuring device, enters into the water measuring device before the water intaking in inwards 1 and carries out quantitative measuring in earlier, confirms the number of times of water measuring device water measuring according to the water level that sets for to solved the problem of intaking of aporate inner tube drum washing machine according to the water level that sets for, ensured the washing effect, simple structure, it is convenient to control.

Further, the water measuring device in this embodiment includes a water measuring tank 21, the water measuring tank 21 has a water inlet and a water outlet, the water inlet is connected with the water inlet pipeline, and the water outlet is connected with the inner cylinder 17; 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 water tank 21 reaches a set value.

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

As an implementation manner of this embodiment, as shown in fig. 3, the water tank 21 is disposed at an upper portion of the inner cylinder 17, the water tank includes a water level detecting device 22 for detecting the water tank, the water outlet control device is a water tank drain valve 25, and the water tank drain valve 25 is opened to drain water in the water tank 21 into the inner cylinder when the water level detecting device 22 detects that the water level in the water tank 21 reaches a set value.

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

As an implementation manner of this embodiment, the water tank 21 is disposed at the upper portion of the inner cylinder 17, the water outlet is disposed on the bottom wall of the water tank 21, the water outlet control device is a water tank check valve that keeps the water outlet normally closed, and when the water amount in the equivalent water tank reaches a certain value, the water tank check valve is opened under the gravity of water pressure, and after the water in the water tank 21 is discharged into the inner cylinder 17, the water tank check valve resets to keep the water outlet closed.

The overflow hole 24 is arranged on the water tank 21 in the embodiment, and the overflow hole 24 is connected with an overflow pipeline for guiding out the overflowed water in the water tank.

Preferably, the drum washing machine comprises a drain pipe 8, and the overflow pipe is communicated with the drain pipe 8.

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

The embodiment also provides a control method of the drum washing machine, the washing machine executes a washing/rinsing program, the washing machine controls washing water to enter the water tank, when the water quantity in the water tank reaches a set value, water inflow is stopped, water in the water tank is completely discharged into the inner drum, water inflow is started again to enter the water tank, and circulation is performed until the water level in the inner drum reaches the set value, and water inflow is ended.

Further, the washing machine controls the washing water to enter the water measuring tank, when the water quantity in the water measuring tank reaches a set value, water inflow is stopped, 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, the water in the water measuring tank is completely 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 non-porous inner cylinder drum washing machine, and particularly, the sudden water interruption of the electromagnetic valve, especially the water interruption of a tap water pipe network, forms negative pressure and backflushes the washing water in the sealed cabin to the pipe network; or the gas exists in the water tank, and the water is difficult to enter.

As shown in fig. 5-7, the drum washing machine of the present embodiment includes an inner drum 17, wherein the inner drum 17 is a non-porous inner drum, and is used for containing washing water during 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 is fed, the air in the sealed cabin of the inner cylinder is pressurized and overflows through the balance mechanism, so that air pressure balance is ensured.

When water is suddenly cut off, the external atmosphere can rapidly enter the sealed cabin of the inner cylinder, reverse suction is destroyed, air pressure balance is ensured, and washing water is prevented from being sucked into a tap water pipe network.

The air pressure balance mechanism can ensure the air pressure balance of the inner cylinder when other materials are dehydrated.

As an implementation manner of this embodiment, the air pressure balancing mechanism includes a pressure equalizing hole 27 disposed on the inner cylinder 17, where one end of the pressure equalizing hole 27, which is connected to the inner cylinder 17, is disposed on the inner cylinder 17 near the rotation center axis and is always higher than the highest water level in the inner cylinder 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 canal 27 is formed in the inner drum shaft 13 to communicate 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 from the pressure equalizing pore canal.

The drum washing machine of this embodiment includes urceolus 18, inner tube 17 set up in urceolus 18 inside, the water that discharges in the inner tube 17 is discharged through urceolus 18, the inner tube door 6 of sealed inner tube is installed to the nozzle of inner tube 17, the nozzle of urceolus 18 is opened, the one end intercommunication inner tube 17 inside of pressure equalizing duct 27, the other end sets up in urceolus 18 inside and communicates with each other. In this way, the extreme case is prevented, and the hole water can also be collected in the outer tub 18.

Further, in this 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 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 locking mechanism pushes the one-way valve plug open for draining after the inner cylinder is locked by the locking mechanism.

Further, the drum washing machine of the embodiment includes a water inlet pipeline, the inner drum shaft 13 is provided with a hollow channel 14 communicating with 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 canal 27 and the hollow channel 14 are respectively communicated with the inner part of the inner cylinder 17 and are mutually isolated. Thus, the gas in the sealed cabin of the inner cylinder can be smoothly discharged to keep the air pressure balance in the inner cylinder, and meanwhile, the water inflow is prevented from being directly discharged from the pressure equalizing pore canal 27 to leak water.

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 comprises 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 to be communicated with the inside of the outer cylinder.

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

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 and is 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.

In the drum washing machine of this embodiment, a plurality of dewatering holes are formed in the side wall of the inner drum 17, and centrifugal valves are installed in the dewatering holes, and are opened to dewater and drain under the action of dewatering centrifugal force.

Example IV

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

The pressurizing mechanism in this embodiment includes a pressurizing channel 28 and a negative pressure relief valve 29, the negative pressure relief valve 29 is disposed on the pressurizing channel 28, and is used for conducting the pressurizing channel 28 in a unidirectional manner when the internal pressure of the inner cylinder 17 is smaller than the external atmospheric pressure, and the external atmospheric gas enters the inner cylinder 17 from the pressurizing channel 28 to be pressurized until the internal air pressure of the inner cylinder 17 is balanced with the external atmospheric pressure, and the negative pressure relief valve 29 is closed.

The pressure release mechanism in this embodiment includes pressure release pore canal 30 and positive pressure relief valve 31, pressure release pore canal 30 set up on inner tube 17 be close to rotation center axis position department and be higher than the highest water level position in the inner tube 17 all the time, positive pressure relief valve 31 set up on pressure release pore canal 30 for the pressure release is carried out to the unidirectional conduction pressure release pore canal 30 when inner tube 17 internal pressure is greater than external environment atmospheric pressure, until inner tube 17 internal air pressure and external environment atmospheric pressure balance, positive pressure relief valve 31 is closed.

As shown in fig. 9, when water is fed, the gas in the sealed cabin of the inner cylinder 17 is pressurized, and once the pressure is larger than the set value of the positive pressure safety valve, the positive pressure safety valve is opened and overflows through the pressure relief pore canal, 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, reverse suction is destroyed, air pressure balance is ensured, and washing water is prevented from being sucked into a tap water pipe network.

The drum washing machine of this embodiment includes driving motor 16 and inner tube axle 13, driving motor 16 drive inner tube 17 rotation through interior tube axle 13 and inner tube 17 transmission connection, pressure boost pore 28 and/or pressure release pore 30 set up on inner tube axle 13 intercommunication inner tube 17 inside and external environment, the highest water level in inner tube 17 is less than inner tube axle 13.

The drum washing machine of this embodiment includes the urceolus 18, the inner tube 17 set up in urceolus 18 inside, the water that discharges in the inner tube 17 is discharged through urceolus 18, the drum mouth installation of inner tube 17 seals the inner tube door 6 of inner tube, the drum mouth of urceolus 18 is opened, the one end intercommunication inner tube 17 inside of pressure boost pore canal 28 and/or pressure release pore canal 30, the other end sets up in urceolus 18 inside and communicates with each other.

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 the 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 pore canal 30 and the hollow channel 14 are respectively communicated with the inner part of the inner cylinder 17 and are mutually isolated.

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 channel 30 includes a first channel section and a second channel section, the first channel section is parallel to the hollow channel, one end of the first channel section is communicated with the inner cylinder, one end of the second channel section is communicated with the first channel section, and the other end extends to the outer peripheral wall of the inner cylinder shaft to be communicated with the inner part of the outer cylinder;

preferably, the second duct section is perpendicular to the first duct section 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 the inner drum shaft 13, and the water inlet pipeline is communicated with the hollow channel 14 of the inner drum shaft 13; the plenum duct 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 passage 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 plenum 28 is disposed perpendicular to the hollow passage 14.

The inner cylinder shaft is connected with a 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 and is communicated with the hollow channel of the inner cylinder shaft.

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

It may be mentioned that the preferred pressurizing duct 28 and the pressure releasing duct 30 are both provided on the inner cylinder shaft 13, and the communicating atmosphere openings are both inside the outer cylinder 18; the openings of the capsule communicating with the inner tube 17 are all inside the capsule.

Example five

As shown in fig. 13 to 16, a drum washing machine of the present embodiment includes an inner tub 17, the inner tub 17 being a non-porous inner tub, and a position detecting device for detecting a position of the inner tub when washing laundry.

The drum washing machine of this embodiment includes driving motor 16 and inner drum shaft 13, and driving motor 16 includes stator and rotor, and rotor and inner drum shaft 13 fixed connection drive inner drum 17 rotation, position detection device include position sensor 33 and by the detection terminal 38, by the detection terminal 38 set up on the rotor, position sensor 33 fix with by the position that detects terminal 38 corresponds.

The drum washing machine of the present embodiment includes an outer tub 18, and the position sensor 33 is disposed on one side of the outer tub 18 near the driving motor 16, and the position sensor 33 is disposed corresponding to the detected terminal 38 at a distance.

As an implementation manner of this embodiment, the position sensor is an electromagnetic position sensor, or a photoelectric position sensor, or a differential voltage sensor, or an eddy current sensor, or a capacitive sensor, or a reed switch sensor, or a hall sensor.

The drum washing machine of this embodiment includes a locking mechanism 35 for locking the rotation of the inner drum, and the position detecting 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 locking the inner drum 17 after the position detecting device detects that the inner drum 17 rotates to a set position.

Further, the locking mechanism 35 is mounted on the side wall of the outer cylinder 18 close to the driving motor 16, the locking mechanism 35 comprises a locking rod 40 moving telescopically and a locking motor 41 driving the locking rod 40 to move telescopically, a locking groove 39 matched with the locking rod 40 is arranged on the rotor of the driving motor 16, and when the locking rod 40 is driven by the locking motor 41 to extend out and be inserted into the locking groove 39, the inner cylinder 17 is locked.

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

Further, the ejector rod mechanism is arranged on the outer cylinder and comprises an ejector rod in telescopic motion and an ejector rod motor for driving the ejector rod to perform telescopic motion, and the ejector rod penetrates through the wall of the outer cylinder and is inserted into a drain hole of the inner cylinder to jack up the one-way valve plug for draining.

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 all electrically connected with the main controller.

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

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 of the outer tub 18 and the rotor frame rotated by the driving motor 16.

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 main controller 4 of the washing machine via a line 43.

The position of the detected terminal 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 fixing knot 34 is fixed behind 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 drive motor has a lock groove and a detected terminal 38.

Example six

As shown in fig. 17 to 18, a drum washing machine of this embodiment includes an inner tub 17 and an outer tub 18, the inner tub 17 is a non-porous inner tub, and holds washing water when washing laundry, the outer tub 18 is coaxially disposed outside the inner tub 17, for collecting water discharged from the inner tub 17 and discharging the water through a water discharge pipe, and a position detecting device disposed on the outer tub 18 for detecting a position of the inner tub.

Further, the position detecting device comprises a position sensor 37 and a detected terminal 38, wherein the detected terminal 38 is arranged on the inner cylinder 17, and the position sensor 37 is arranged on the inner wall of the outer cylinder 18 and corresponds to the detected terminal 38 on the inner cylinder 17.

Preferably, the detected terminal 38 is disposed on a side wall of the inner cylinder 17, the position sensor 37 is disposed on an inner side wall of the outer cylinder 18, and a circumference of the inner cylinder 17 where the detected terminal 38 is disposed and a circumference of the outer cylinder 18 where the position sensor 37 is disposed are concentric.

Preferably, the position sensor 37 is provided on an inner side wall located at an upper portion of the outer tub 18.

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

The drum washing machine of this embodiment includes a locking mechanism 35 for locking the rotation of the inner drum, and the position detecting 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 locking the inner drum by the locking mechanism 35 when the position detecting device detects that the inner drum 17 rotates to a set position.

Further, the locking mechanism 35 is mounted on the outer cylinder 18, the locking mechanism 35 comprises a locking rod which moves telescopically and a locking motor which drives the locking rod to move telescopically, the inner cylinder 17 is provided with a locking groove 39 which is matched with the corresponding locking rod, and when the locking rod stretches out and is inserted into the locking groove 39 under the driving of the locking motor, the inner cylinder 17 is locked.

As shown in fig. 8, as an implementation 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 lifter bar 43.

As an implementation manner of this 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 installed on the inner cylinder drain hole, and a push rod mechanism 10 for pushing the one-way valve plug 11 open to drain is installed on the outer cylinder 18; the locking mechanism 35 locks the inner cylinder 17 and then the ejector rod mechanism 10 pushes the one-way valve plug 11 open for drainage.

Further, the ejector rod mechanism 10 is mounted on the outer cylinder 18, the ejector rod mechanism 10 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 wall of the outer cylinder and is inserted into a drain hole of the inner cylinder to jack up the one-way valve plug for draining.

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

Example seven

The control method of a drum washing machine, the drum washing machine includes the inner cylinder, position detection device used for detecting the position of inner cylinder and locking mechanism used for locking inner cylinder pivoted, the inner cylinder is the aporate inner cylinder, hold the wash water while washing the clothes, the said control method includes:

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 is in place.

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

The washing machine comprises a driving motor for driving the inner cylinder to rotate, and in the washing or rinsing program, the washing machine controls the driving motor to reduce the speed to execute the inner cylinder to stop the rotating program, when the rotating speed of the inner cylinder is reduced below a set safe rotating speed, the locking mechanism is controlled to lock the inner cylinder, if the position detection device detects that the inner cylinder rotates to a set position, water is drained, and otherwise, the water is not drained.

In the embodiment, an inner cylinder drain hole is formed in the side wall of the inner cylinder, a normally closed one-way valve plug is arranged on the inner cylinder drain hole, and a push rod mechanism for pushing the one-way valve plug open to drain is arranged on the outer cylinder; the drainage program comprises the following steps: after the locking mechanism locks the inner cylinder, the push rod mechanism is controlled to push the one-way valve plug open for draining.

The washing machine comprises a driving motor for driving the inner cylinder to rotate, wherein in a dehydration procedure, the washing machine controls the driving motor to reduce the speed to execute the inner cylinder to stop the rotation procedure, when the rotation speed of the inner cylinder is reduced below a set safe rotation speed, if the position detection device detects that the inner cylinder rotates to a set position, the driving motor is controlled to stop rotating and keep the position of the inner cylinder unchanged, a locking mechanism is controlled to lock the inner cylinder, the dehydration procedure is ended, and the door lock is released.

The washing machine comprises a driving motor for driving the inner cylinder to rotate, wherein in a dehydration procedure, the washing machine controls the driving motor to reduce the speed to execute the inner cylinder to stop the rotation procedure, when the rotation speed of the inner cylinder is reduced below a set safe rotation speed, a locking mechanism is controlled to lock the inner cylinder, the dehydration procedure is finished, a door lock is released, and if the position detection device does not detect that the inner cylinder 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 the 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 relative position of the detected end and the position sensor, the inner cylinder rotates to the set position, and/or after the inner cylinder is locked by the locking mechanism, the rotor rotates to the relative position of the detected end and the position sensor, and the inner cylinder is locked in place.

The locking mechanism of this embodiment install on the urceolus be close to driving motor's lateral wall, locking mechanism includes telescopic movement's locking lever and the locking motor of drive locking lever telescopic movement, correspond the locking lever on driving motor's the rotor set up rather than complex locking groove, when the locking lever stretches out under locking motor's drive and inserts in the locking groove, the inner tube is locked.

The drum washing machine comprises an outer drum, wherein the outer drum is coaxially arranged outside the inner drum and used for collecting water discharged from the inner drum and discharging the water through a drainage pipeline, the position detection device comprises a position sensor and a detected terminal, the detected terminal is arranged on the inner drum, and the position sensor is arranged on the inner wall of the outer drum and corresponds to the detected terminal on the inner drum;

The locking mechanism of this embodiment install on the urceolus, locking mechanism includes telescopic movement's locking pole and drive locking pole telescopic movement's locking motor, correspond the locking pole on the inner tube set up rather than complex locking groove, when the locking pole stretches out under locking motor's drive and inserts in the locking groove, the inner tube is locked.

Example eight

As shown in fig. 20-22, a drum washing machine of this embodiment includes an inner drum 17, in which washing water is contained in the inner drum 17 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 connecting with the inner drum bottom to form an inner accommodating chamber, the inner drum wall has an inner diameter enlarging section 44/an inner diameter reducing section 46, the inner diameter of the inner diameter enlarging section 44/the inner diameter reducing section 46 gradually increases/decreases along the direction from the inner drum opening to the inner drum bottom, and a drain 45 is provided at the inner diameter maximum end of the inner drum wall near the inner diameter enlarging 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 enlarging section 44/an inner diameter reducing section 46, and when draining, the draining device 45 is opened by the inner cylinder rotational centrifugal force, and the washing water in the inner cylinder is moved to the inner diameter maximum end along the cylinder wall of the inner diameter enlarging section 44/the inner diameter reducing section 46 by the component force of the centrifugal force in the cylinder wall direction of the inner diameter enlarging section 44/the inner diameter reducing section 46, and is drained by the draining device 45 arranged at the inner diameter maximum end of the inner diameter enlarging section/the inner diameter reducing section. Therefore, the inner cylinder structure of the drum washing machine aims at the non-porous inner cylinder and the centrifugal drainage mode, and can effectively realize high-efficiency dewatering and centrifugal drainage of the non-porous inner cylinder.

As shown in fig. 20 and 21, as an embodiment of the present application, the inner cylinder wall has an inner diameter enlarged section 44 and an inner diameter flat section, the inner diameter of the inner diameter flat section being equal to or larger than the inner diameter of the largest end of the inner diameter enlarged section 44; the inner diameter expansion section 44 gradually transitionally increases along the direction from the inner cylinder mouth to the inner cylinder bottom, the inner diameter flat section is connected with the inner diameter maximum end of the inner diameter expansion section 44, and the drainage device 45 is arranged on the inner diameter flat section. The enlarged inner diameter section 44 of this embodiment is used for realizing the convergence of the washing water toward the largest inner diameter end, and the largest inner diameter end is connected to the straight inner diameter section, the converged water flow is collected there and discharged through the drainage device 45, the drainage device 45 is opened by centrifugal force, and the inner diameter section is opened normally under the effect of centrifugal force.

Further, the inner diameter straight section is of a cylindrical structure, one end of the inner diameter straight section is connected with the largest inner diameter end of the inner diameter expansion section 44, and the other end of the inner diameter straight section is connected with the circumferential periphery of the bottom of the inner barrel; the drain 45 includes at least one drain hole arranged in the circumference of the inner diameter straight section and a centrifugal valve mounted on the drain hole to control the on/off of the drain hole.

As shown in fig. 22, as another implementation manner of the present embodiment, the inner cylinder wall has an inner diameter reduced section 46 and an inner diameter flat section, and the inner diameter of the inner diameter flat section is equal to or greater than the inner diameter of the largest end of the inner diameter reduced section; the inner diameter reducing section gradually transits and reduces along the direction from the inner barrel opening to the inner barrel bottom, the inner diameter flat section is connected with the inner diameter maximum end of the inner diameter reducing section, and the drainage device is arranged on the inner diameter flat section. In this embodiment, the function of the reduced diameter section 46 is the same as that of the enlarged diameter section 44, with the only difference being the location of the straight diameter section and the drain.

Further, the inner diameter flat section is of a cylindrical structure, one end of the inner diameter flat section is connected with the largest inner diameter end of the inner diameter reduced section 46, and the other end of the inner diameter flat section is provided with an inner cylinder sealing door capable of being opened/closed; the drainage device comprises at least one drainage hole arranged upwards of the inner diameter straight Duan Zhou and a centrifugal valve arranged on the drainage hole and used for controlling the connection/disconnection of the drainage hole.

The axial length of the inner diameter expansion section 44/the inner diameter reduction section 46 is H, the axial length of the inner diameter flat 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 the A satisfies the following conditions: a is more than or equal to 0 degree and less than or equal to 45 degrees.

As an implementation of this embodiment, the inner diameter enlarged section 44/inner diameter reduced section 46 is integrally formed with the inner diameter flat section.

Example nine

As shown in fig. 23 to 28, a drum washing machine of this embodiment includes an inner drum 17, in which washing water is contained in the inner drum 17 when washing clothes, the inner drum 17 has an inner drum mouth, an inner drum bottom opposite to the inner drum mouth, and an inner drum wall surrounding and connecting with the inner drum bottom to form an inner accommodation chamber, the inner drum wall has an inner diameter enlarging section 44 and an inner diameter reducing section 46, the inner diameter of the inner diameter enlarging section 44 is gradually increased along the direction from the inner drum mouth to the inner drum bottom, the inner diameter of the inner diameter reducing section 46 is gradually decreased along the direction from the inner drum mouth to the inner drum bottom, and drainage devices 45 are respectively provided on the inner drum wall near the inner diameter maximum ends of the inner diameter enlarging section 44 and the inner diameter reducing section 46.

The inner cylinder wall of the inner cylinder of the drum washing machine of this embodiment has an inner diameter enlarging section 44 and an inner diameter reducing section 46, and when draining, the draining device 45 is opened by the inner cylinder rotational centrifugal force, and the washing water in the inner cylinder is moved to the inner diameter maximum end along the cylinder walls of the inner diameter enlarging section 44 and the inner diameter reducing section 46 by the component force of the centrifugal force in the cylinder wall direction of the inner diameter enlarging section 44 and the inner diameter reducing section 46, and is drained by the draining device 45 provided at the inner diameter maximum end of the inner diameter enlarging section and the inner diameter reducing section. Therefore, the inner cylinder structure of the drum washing machine aims at the non-porous inner cylinder and the centrifugal drainage mode, and can effectively realize high-efficiency dewatering and centrifugal drainage of the non-porous inner cylinder.

As shown in fig. 23 and 24, as an implementation manner 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 toward the middle part of the inner cylinder wall; the smallest inner diameter end of the inner diameter reduced section 46 is close to the bottom of the inner barrel, and the largest inner diameter end of the inner diameter reduced section 46 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. In this way, in the drainage process, the water flow in the inner cylinder is converged from the two ends to the middle part and is discharged by the drainage device 45, which is more beneficial to efficient dewatering and centrifugal drainage.

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, where H1 is greater than or equal to H2, and preferably, h1=h2;

the included angle between the side wall of the inner diameter expansion section and the horizontal plane is A, the included angle between the side wall of the inner diameter reduction section and the horizontal plane is B, and A, B meets the following conditions: a is more than or equal to 0 DEG and B is more than or equal to 45 deg.

As shown in fig. 25 and 26, as an implementation manner of this embodiment, the drum washing machine includes an inner diameter flat section 47, where the inner diameter flat section 47 is located in the middle of the inner drum, and two ends of the inner diameter flat section are respectively connected to one end of the inner diameter maximum of the inner diameter expansion section 44 and one end of the inner diameter maximum of the inner diameter reduction section 46; the inner diameter flat section 47 is provided with a drainage device 45. Thus, the centrifugally opened drain is provided in the inner diameter flat section 47 to ensure that it is opened by centrifugal force when the inner barrel is rotated to ensure the effectiveness of the drain.

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, and the axial length of the inner diameter flat section is H3;

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

The contained angle between the lateral wall of the internal diameter expansion section and the horizontal plane is A, the contained angle between the lateral wall of the internal diameter reduction section and the horizontal plane is B, the internal diameter flat section is of a cylindrical tubular structure, the contained angle between the internal diameter flat section and the horizontal plane is C, A, B, C meets the following conditions: a is more than or equal to 0 DEG and less than or equal to B is more than or equal to 45 DEG, and C=0 deg.

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

As a further implementation manner of this embodiment, the largest end of the inner diameter-reduced section 46 is close to the inner cylinder opening, and the smallest end of the inner diameter-reduced section 46 extends toward the middle of the inner cylinder wall; the largest internal diameter end of the internal diameter expansion section 44 is close to the bottom of the inner barrel, the smallest internal diameter end of the internal diameter expansion section 44 extends towards the middle of the inner barrel wall to form an inner barrel with large internal diameter at two ends and small internal diameter in the middle, a first drainage device is arranged on the wall of the inner barrel, and a second drainage device is arranged on the wall of the inner barrel, close to the largest internal diameter end of the internal diameter expansion section. The embodiment provides an inner tube with large inner diameter and small middle inner diameter, when draining, water in the inner tube is gathered towards two ends and drained by a drainage device, and the inner tube also has better efficient dewatering performance and centrifugal drainage performance.

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, and the H4 is greater than or equal to H5, preferably, the h4=h5;

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

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 one end with the largest inner diameter of the inner diameter reduced section, and the second inner diameter straight section is connected with one end with the largest inner diameter of the inner diameter expanded section; the first water draining device is arranged on the first inner diameter straight section, and the second water draining device is arranged on the second inner diameter straight section.

Specifically, the axial length of the inner diameter reducing section is H4, the axial length of the inner diameter expanding section is H5, the axial length of the first inner diameter straight section is H6, the axial length of the second inner diameter straight section is H7, the H4 is greater than or equal to h5 and greater than or equal to h6=h7, preferably, the h4=h5 is greater than h6=h7;

the contained angle between the lateral wall of the internal diameter section of shrinking and the horizontal plane is D, and the contained angle between the lateral wall of the internal diameter section of expanding and the horizontal plane is E, the straight section of first internal diameter, the straight section of second internal diameter are cylindric structure, and the contained angle between the straight section of first internal diameter and the horizontal plane is F, and the contained angle between the straight section of second internal diameter and the horizontal plane is G, D, E, F, G satisfy: d is more than or equal to 0 and less than or equal to E is more than or equal to 45 degrees, and F, G =0°.

Examples ten

29-32, a drum washing machine of the present embodiment includes an inner tub 17, in which washing water is contained in the inner tub 17 when washing laundry, the inner tub 17 being provided with a plurality of annular water collecting grooves along the circumference of the inner wall thereof and an axial water collecting 50 penetrating through the annular water collecting grooves (48, 49) along the axial direction thereof; a drainage device 45 is arranged in the annular water collecting grooves (48, 49).

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

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

The inner wall of the inner cylinder of the embodiment is provided with first annular water collecting grooves 48, N wave crest and wave 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 sump 49 for collecting all of the centrifugal collected water, and has a bore structure with a centrifugal valve seal that can be opened only under certain rotational speed centrifugal force conditions.

The inner wall of the inner barrel is provided with an axial water collecting tank 50, the axial water collecting tank 50 is communicated with the first annular water collecting tank 48 and the second annular water collecting tank 49, water in each first annular water collecting tank 48 is collected on the second annular water collecting tank 49 faster and easier, and the water is discharged through a hole structure on the water collecting tank to realize efficient dewatering and drainage.

As an implementation manner of this embodiment, the inner cylinder 17 has 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 surrounding and connected with the inner cylinder bottom to form an inner accommodating cavity; the middle part of the inner barrel wall is provided with a second annular water collecting tank 49, and a plurality of first annular water collecting tanks 48 are sequentially arranged in the inner barrel wall along the axial direction 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.

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 with 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 tank 49 and the inner barrel port is L1, the axial length between the second annular water collecting tank 49 and the inner barrel bottom is L2, and the L1 and 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 scheme:

the drum washing machine according to the embodiment is characterized in that the inner diameter enlarging section/inner diameter reducing section and/or the inner diameter straightening section of the inner drum are provided with an annular water collecting tank along the circumferential direction of the inner wall of the inner drum and an axial water collecting tank which penetrates through the annular water collecting tank along the axial direction of the inner drum.

Further, a plurality of first annular water collecting grooves and second annular water collecting grooves 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 of the inner diameter expansion section/the inner diameter reduction section, the axial water collecting grooves sequentially penetrate through and are communicated with the first annular water collecting grooves and the second annular water collecting grooves, and the water draining device is arranged in the second annular water collecting grooves;

preferably, the second annular water collection trough has a greater trough width than the first annular water collection trough.

Further, a plurality of first annular water collecting grooves 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 of the inner diameter expansion section/the inner diameter reduction 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 are communicated with the first annular water collecting grooves and the third annular water collecting grooves;

preferably, the third annular water collection sump has a greater sump width than the first annular water collection sump.

Further, the inner cylinder wall is provided with an inner diameter expanding section/an inner diameter shrinking section, the inner diameter of the inner diameter expanding section/the inner diameter shrinking section gradually increases/decreases along the direction from the inner cylinder mouth to the inner cylinder bottom, a plurality of first annular water collecting grooves and second annular water collecting grooves are sequentially arranged on the inner wall of the inner diameter expanding section/the inner diameter shrinking section along the axial direction of the inner wall, the axial water collecting grooves sequentially penetrate through and are communicated with the first annular water collecting grooves and the second annular water collecting grooves, and the groove width in the second annular water collecting grooves is larger than that in the first annular water collecting grooves; the drainage device is arranged in the second annular water collecting tank.

Further, the inner cylinder wall is provided with an inner diameter flat section, and the inner diameter of the inner diameter flat section is larger than or equal to the inner diameter of the largest end of the inner diameter expanding section/the inner diameter shrinking section; the inner diameter flat section is connected with the largest inner diameter end of the inner diameter expansion section/the inner diameter reduction section; the inner wall of the inner diameter expansion section/the inner diameter reduction section is provided with a plurality of first annular water collecting grooves along the axial direction of the inner wall, 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 through and are communicated with the first annular water collecting groove and the second annular water collecting groove.

Further, the inner cylinder wall is provided with an inner diameter expansion section and an inner diameter reduction section, the end with the smallest inner diameter of the inner diameter expansion section is close to the inner cylinder opening, and the end with the largest inner diameter of the inner diameter expansion section extends towards the middle part of the inner cylinder wall; the inner barrel is characterized in that the smallest inner diameter end of the inner diameter reducing section is close to the bottom of the inner barrel, and the largest inner diameter end of the inner diameter reducing 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 expansion section and the inner diameter reduction section are sequentially provided with a plurality of first annular water collecting grooves along the axial direction of the inner walls, and the second annular water collecting grooves are arranged on the cylinder wall between the inner diameter maximum end of the inner diameter expansion section and the inner diameter maximum end of the inner diameter reduction section.

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

Further, the water collecting device also comprises an inner diameter flat section, wherein the inner diameter flat section is connected with the inner diameter maximum end of the inner diameter expanding section and the inner diameter maximum end of the inner diameter shrinking section, and the second annular water collecting tank is arranged on the inner diameter flat section.

Example twelve

A control method of a drum washing machine, the washing machine includes an inner drum, the inner drum holds washing water when washing clothes, a drain hole is set on the side wall of the inner drum, a centrifugal valve for controlling the on/off of the drain hole is installed on the drain hole, the control method includes: in the washing process of the washing machine, the rotation speed of the inner cylinder is controlled to reach or exceed the set rotation speed N0, and the centrifugal valve is subjected to centrifugal force to open the water drain hole to drain the inner cylinder.

The water draining device of the embodiment adopts a centrifugal valve, the centrifugal valve is opened to drain water by controlling the rotation of the inner cylinder to generate centrifugal force, and the water draining and the dehydration of the drum washing machine with the hole-free inner cylinder are realized by the centrifugal valve and a program control mode.

As an implementation manner of this embodiment, after the washing machine performs the washing procedure or the rinsing procedure, the rotational speed of the inner cylinder is controlled to reach the first rotational speed N1 and maintain a set time t1, where N1 is greater than or equal to N0, and N0 is greater than the rotational speed of the inner cylinder in the washing procedure or the rinsing procedure; when the rotation time of the inner cylinder maintaining the rotation speed N1 reaches t1, controlling the inner cylinder to stop rotating to enter the next program;

As another implementation manner of this embodiment, after the washing machine performs the washing procedure or the rinsing procedure, the rotational speed of the inner cylinder is controlled to reach the first rotational speed N1, where N1 is greater than or equal to N0, and N0 is greater than the rotational speed of the inner cylinder in the washing procedure or the rinsing procedure; when the water in the inner cylinder is discharged, the inner cylinder is controlled to stop rotating to enter the next procedure.

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

The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.

Claims

1. The control method of a drum washing machine, the washing machine includes the inner cylinder, hold the wash water in the inner cylinder while washing the clothes, characterized by that, offer the drain hole on the sidewall of the inner cylinder, install the centrifugal valve controlling its on/off on the drain hole, still include the air pressure balancing mechanism used for communicating the external environment of the inner cylinder in order to balance the inner cylinder internal air pressure, the control method includes: in the washing process of the washing machine, the centrifugal valve is controlled to enable the water discharge hole to be opened by centrifugal force to drain water in the inner cylinder by controlling the rotation speed of the inner cylinder to reach or exceed a set rotation speed N0;

the washing machine comprises a weighing device for weighing the weight in the inner cylinder, wherein the weighing device detects the weight W0 in the inner cylinder before the inner cylinder starts to rotate by N1, the weighing device detects the weight W1 in the inner cylinder after the rotation time reaches t1, and the control system judges whether the water drainage is normal according to the comparison of the W1 and the W0; n1 is more than or equal to N0,

in the process that the inner cylinder is controlled to rotate by N1, the control system judges whether the water drainage is finished according to the weight value in the inner cylinder detected by the weighing device in real time,

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 the control system comprises the following steps:

when nt remains unchanged and tends to 0 for a certain period of time, the drainage is completed,

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

2. The control method of a drum washing machine according to claim 1, wherein after the washing machine performs a washing process or a rinsing process, the rotational speed of the inner tub is controlled to reach a first rotational speed N1 and maintained for a set time t1, N0 being greater than the rotational speed of the inner tub in the washing process or the rinsing process; when the rotation time of the inner cylinder maintaining rotating speed N1 reaches t1, the inner cylinder is controlled to stop rotating to enter the next program.

3. The control method of a drum washing machine as claimed in claim 2, wherein N1 is 110 to 400 rpm.

4. The control method of a drum washing machine as claimed in claim 2, wherein N1 is 170±50 rpm.

5. The control method of a drum washing machine as claimed in claim 2, wherein N1 is 150±20 rpm.

6. The control method of a drum washing machine as claimed in claim 2, wherein t1 ranges from 0.1 to 5 minutes.

7. The control method of a drum washing machine as claimed in claim 2, wherein t1 ranges from 1 to 2 minutes.

8. A control method of a drum washing machine according to claim 3, wherein the control system judges whether the drainage is abnormal by comparing the value k of W1/W0, if k is not less than 0.7, the control system judges that the drainage is abnormal and alarms, otherwise, the drainage is normal.

9. The control method of a drum washing machine according to claim 1, wherein after the washing machine performs a washing process or a rinsing process, the rotational speed of the inner tub is controlled to reach a first rotational speed N1, N0 greater than the rotational speed of the inner tub in the washing process or the rinsing process; when the water in the inner cylinder is discharged, the inner cylinder is controlled to stop rotating to enter the next procedure.

10. The control method of a drum washing machine as claimed in claim 1, wherein the washing machine performs a dehydration process in which a minimum dehydration rotation speed N2 is equal to or greater than N0.

11. A drum washing machine employing the control method as claimed in any one of claims 1 to 10.