CN111826881B - Control method of drum washing machine and drum washing machine - Google Patents
Control method of drum washing machine and drum washing machine Download PDFInfo
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- CN111826881B CN111826881B CN201910311729.3A CN201910311729A CN111826881B CN 111826881 B CN111826881 B CN 111826881B CN 201910311729 A CN201910311729 A CN 201910311729A CN 111826881 B CN111826881 B CN 111826881B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry
- D06F23/02—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and rotating or oscillating about a horizontal axis
- D06F23/025—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and rotating or oscillating about a horizontal axis with a rotatable imperforate tub
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/40—Driving arrangements for driving the receptacle and an agitator or impeller, e.g. alternatively
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The application provides a control method of a drum washing machine and the drum washing machine, the drum washing machine comprises a first inner barrel and a second inner barrel arranged in the first inner barrel, the second inner barrel is provided with a closeable independent washing chamber, and washing water is independently contained when clothes are washed. The control method of the drum washing machine realizes the working conditions of water inlet, washing, dewatering, water discharge and the like when the first inner cylinder and/or the second inner cylinder work independently or the first inner cylinder and the second inner cylinder work together by controlling the first inner cylinder and/or the second inner cylinder to operate, so as to achieve the aim of independently washing clothes in the first inner cylinder or the second inner cylinder in a partitioning way.
Description
Technical Field
The application 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, with the improvement of the living standard of people, the washing requirements for the washing machine are increasing, and in particular, the washing of different types of clothes cannot be mixed in the same washing drum, or the clothes of each family member cannot be mixed in the same washing drum, so that the requirement for separate washing becomes a requirement.
In order to solve the aim of independent washing of the subareas, the prior application number is 201410806293.2, and the name is: the application provides a Chinese patent application of a double-drum washing machine, which comprises a shell, a control panel, a first containing cavity and a second containing cavity, wherein the first containing cavity and the second containing cavity are concentric, the radius of the second containing cavity is smaller than that of the first containing cavity, and the control panel can control the first containing cavity and the second containing cavity to work simultaneously or can control the first containing cavity and the second containing cavity to work independently. The application has the beneficial effects that the space occupied by the washing machine is reduced by the ingenious design of the structure, underwear and outerwear are realized, light-colored clothes and dark-colored clothes can be washed in one washing process, the energy consumption is saved, the washing requirements of different clothes are met, and a good washing effect is achieved.
The drum washing machine of said application has the first and second cavities to meet the washing requirements of different clothes, but when the first and second cavities are working at the same time, the two cavities are communicated due to the dewatering holes on the inner drum, and the independent partition washing of two cavities can not be realized.
In addition, demands for water saving and self-cleaning properties of the washing machine are increasing.
In view of this, the present application has been made.
Disclosure of Invention
In order to solve the above problems, a first aspect of the present application provides a control method of a drum washing machine, specifically, the following technical solution is adopted:
the control method of the drum washing machine comprises a first inner barrel and a second inner barrel arranged in the first inner barrel, wherein the second inner barrel is provided with a closeable independent washing chamber, washing water is independently contained in the second inner barrel when clothes are washed, the washing machine controls the first inner barrel and/or the second inner barrel to operate, and clothes in the first inner barrel or the second inner barrel are independently washed in a partitioning mode.
Further, the second inner cylinder is a non-porous cylinder, a second inner cylinder door capable of being opened/closed is arranged on a cylinder opening of the second inner cylinder, the second inner cylinder door is closed to form a closeable independent washing chamber with the non-porous cylinder, and the drum washing machine further comprises a water inlet system communicated with the inside of the second inner cylinder;
the control method comprises an independent working mode of the second inner cylinder, wherein in the water inlet process, the second inner cylinder is controlled to be kept static, and water in the water inlet system only enters the second inner cylinder.
Further, a second water outlet is formed in the side wall of the second inner cylinder, and a second centrifugal valve for keeping the water outlet normally closed is arranged on the second water outlet;
the control method comprises the following steps: the washing machine controls the rotating speed of the second inner cylinder to exceed a second set value N2, the second centrifugal valve opens the second water outlet, and water in the second inner cylinder is discharged into the first inner cylinder.
Further, the water inlet device comprises a first inner cylinder and a second inner cylinder working together, wherein in the water inlet process, the rotating speed of the second inner cylinder is controlled to exceed a second set value N2, a second water outlet is opened by the second centrifugal valve, and water entering the second inner cylinder from a water inlet system is discharged into the first inner cylinder;
when the water level in the first inner cylinder reaches a set value, the rotating speed of the second inner cylinder is controlled to be lower than a second set value N2 or kept still until the water level in the second inner cylinder reaches the set value, and the water inlet system stops water inlet.
Further, in the drainage process or the dehydration process, the rotating speed of the second inner cylinder is controlled to exceed a second set value N2, the second centrifugal valve opens the second water outlet, and water in the second inner cylinder is discharged into the first inner cylinder and is discharged through the first inner cylinder.
Further, the first inner cylinder is a non-porous cylinder, a first inner cylinder door capable of being opened/closed is arranged on a cylinder opening of the first inner cylinder, a closed independent washing chamber is formed by closing the first inner cylinder door and the non-porous cylinder, a first water outlet is formed in the side wall of the first inner cylinder, and a first centrifugal valve for keeping the water outlet normally closed is arranged on the first water outlet;
the control method comprises the following steps: in the water inlet process, the rotating speed of the second inner cylinder is controlled to be larger than or equal to a second set value N2 and smaller than a first set value N1, the second centrifugal valve opens the second water outlet, the first centrifugal valve keeps the first water outlet closed, and water entering the second inner cylinder from the water inlet system is discharged into the first inner cylinder, wherein the second set value N2 is smaller than the first set value N1.
Further, in the drainage process or the dehydration process, the first inner cylinder and the second inner cylinder are controlled to synchronously rotate at a rotating speed larger than a first set value N1, the second centrifugal valve opens the second water outlet, the first centrifugal valve opens the first water outlet, water in the second inner cylinder is discharged into the first inner cylinder through the second water outlet, and is discharged through the first water outlet of the first inner cylinder.
Further, in the washing or rinsing process, the first inner cylinder and the second inner cylinder are controlled to synchronously rotate at a rotating speed smaller than a second set value N2, the first centrifugal valve keeps the first water outlet closed, and the second centrifugal valve keeps the second water outlet closed.
Further, the control method comprises a second inner cylinder independent working mode, the washing machine controls the second inner cylinder and the first inner cylinder to jointly rotate at a rotating speed smaller than a second set value N2 to execute a washing working condition, and controls the second inner cylinder and the first inner cylinder to jointly rotate at a rotating speed larger than the first set value N1 to execute a water draining or dewatering working condition.
The second object of the present application is to provide a drum washing machine, specifically, the following technical scheme is adopted:
a drum washing machine employing the control method.
The first inner cylinder of the drum washing machine can be used as an independent washing cylinder to wash clothes independently, the second inner cylinder is provided with the independent washing chamber which can be closed, the second inner cylinder can also be used as an independent washing cylinder to wash clothes independently, and the second inner cylinder is provided with the independent washing chamber which can be closed, so that washing water is independently contained in washing clothes, and when the first inner cylinder and the second inner cylinder are used for washing simultaneously, water in the two cylinders cannot be mixed with each other, and the two cylinders can be washed independently and in a partitioned mode simultaneously.
Therefore, the drum washing machine can drive the inner drums with various specifications by one driving motor, realize that one inner drum runs for washing or a plurality of inner drums are washed simultaneously, and the appearance is just one washing machine, so that the functions of washing the baby in the special washing area, the underwear washing area, the clothes washing area for the old and the socks washing area are realized, the washing effect is improved, and the user experience is improved.
The application 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 control method of the drum washing machine realizes the working conditions of water inlet, washing, dewatering, water discharge and the like when the first inner cylinder and/or the second inner cylinder work independently or the first inner cylinder and the second inner cylinder work together by controlling the first inner cylinder and/or the second inner cylinder to operate, so as to achieve the aim of independently washing clothes in the first inner cylinder or the second inner cylinder in a partitioning way.
Drawings
FIG. 1 is a schematic view of a drum washing machine according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a drum washing machine according to a second embodiment of the present application (first embodiment);
FIG. 3 is a schematic diagram of a drum washing machine according to a second embodiment of the present application (second embodiment);
fig. 4 is a schematic diagram of a drum washing machine according to the second embodiment of the present application (third embodiment);
FIG. 5 is a schematic diagram of a three-drum washing machine according to an embodiment of the present application;
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 application; 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 application;
FIG. 8 is a schematic diagram of a fourth drum washing machine according to an embodiment of the present application;
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 application;
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 application;
fig. 11 is a partial enlarged view of fig. 8 of a drum washing machine according to an embodiment four of the present application (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 application;
fig. 13 is a schematic diagram of a fifth drum washing machine according to an embodiment of the present application.
Detailed Description
The drum washing machine and the control method thereof according to the present application will be described in detail with reference to the accompanying drawings:
as shown in fig. 1 to 13, 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.
As an embodiment of the present embodiment, the outer cylinder 18 is further provided with a locking mechanism for locking the rotation of the inner cylinder 17, and the locking mechanism locks the inner cylinder and then the ejector mechanism 10 pushes the one-way valve plug 11 open to drain water.
As another implementation manner of this embodiment, a plurality of dewatering holes are formed on the side wall of the inner cylinder 17, and centrifugal valves are installed on the dewatering holes, and the inner cylinder is controlled to reach a certain rotation speed, and the centrifugal valves are opened to wash and drain water or dewater and drain water under the action of dewatering 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
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. 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 air pressure balance mechanism can ensure the air pressure balance of the inner cylinder when other materials are dehydrated.
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.
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.
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, a drum washing machine according to the present embodiment includes a first inner tub 1701 and a second inner tub 1702 disposed inside the first inner tub 1701, wherein the second inner tub 1702 has a closable independent washing chamber, and independently holds washing water when washing laundry.
The first inner tub 1701 of the drum washing machine according to this embodiment can be used as an independent washing tub to perform washing of clothes alone, the second inner tub 1702 has an independent washing chamber that can be closed, and can also be used as an independent washing tub to perform washing of clothes alone, and since the second inner tub 1702 has an independent washing chamber that can be closed, washing water is independently contained when washing clothes, so that when the first inner tub 1701 and the second inner tub 1702 wash simultaneously, the water in the two tub will not mix with each other, thereby realizing simultaneous independent partition washing of the two tub.
Therefore, the drum washing machine can drive the inner drums with various specifications by one driving motor, realize that one inner drum runs for washing or a plurality of inner drums are washed simultaneously, and the appearance is just one washing machine, so that the functions of washing the baby in the special washing area, the underwear washing area, the clothes washing area for the old and the socks washing area are realized, the washing effect is improved, and the user experience is improved.
In order to realize that the second inner cylinder has a closable independent washing chamber, the second inner cylinder 1702 is a non-porous cylinder, an openable/closable second inner cylinder door 602 is mounted on the opening of the second inner cylinder 1702, and the second inner cylinder door 602 is closed to form the closable independent washing chamber with the non-porous cylinder.
Because the second inner cylinder 1702 adopts a hole-free cylinder structure, in order to realize the drainage of the second inner cylinder 1702, a second drainage outlet is formed in the side wall of the second inner cylinder 1702, a second centrifugal valve 33 for keeping the drainage outlet normally closed is arranged on the second drainage outlet, and the second centrifugal valve 33 opens the second drainage outlet to drain when the rotation speed of the second inner cylinder 1702 exceeds a set value. By adopting the structural design of the centrifugal valve for draining, the second inner cylinder 1702 can not reach the opening rotation speed of the centrifugal valve in the washing process, so that the clothes in the second inner cylinder 1702 can be independently washed, and the centrifugal valve is opened by controlling the rotation speed of the inner cylinder 1702 to exceed a set value during draining or dewatering, so that draining is realized.
Because the second inner cylinder 1702 adopts the non-porous cylinder design, the second inner cylinder 1702 is both a washing cylinder and a water containing cylinder, and in order to realize water inlet of the second inner cylinder 1702, the drum washing machine of the embodiment comprises a water inlet system, and the first inner cylinder and the second inner cylinder are respectively communicated with the water inlet system.
Preferably, the washing machine comprises an inner cylinder shaft 13 connected with the bottom of the first inner cylinder 1701, the inner cylinder shaft 13 is a hollow shaft, the water inlet system comprises a water inlet pipeline, the water inlet pipeline is communicated with the hollow shaft, and the first inner cylinder 1701 and the second inner cylinder 1702 are both communicated with the hollow shaft.
Further, in this embodiment, the second inner cylinder 1702 is detachably mounted inside the first inner cylinder, and the second inner cylinder has a communication port for communicating with the hollow shaft. In this way, the user can choose whether to use the second inner barrel 1702 according to the specific washing condition, so as to promote the washing experience of the user.
Preferably, the bottom of the second inner cylinder 1702 is clamped on the bottom of the first inner cylinder 1701 through a clamping structure, and a communication port is formed in the center position of the bottom of the second inner cylinder 1702.
In order to further improve the water saving property and self-cleaning property of the drum washing machine of this embodiment, the first inner cylinder 1701 in this embodiment is a non-porous cylinder, and the opening of the first inner cylinder 1701 is provided with a first inner cylinder door 601 which can be opened/closed, and the first inner cylinder door 601 is closed to form a closed independent washing chamber with the non-porous cylinder.
Meanwhile, in order to drain the first inner tube, a first drain opening is formed in a side wall of the first inner tube 1701, a first centrifugal valve 32 for keeping the drain opening normally closed is disposed on the first drain opening, and the first centrifugal valve 32 opens the first drain opening to drain when the rotation speed of the first inner tube 1701 exceeds a set value.
In this embodiment, the axial height H1 of the first inner cylinder 1701 is greater than the axial height H2 of the second inner cylinder 1702, so that the washing machine of the present application has two inner cylinders with different volumes, and a user can select the corresponding inner cylinder to implement independent partition washing according to actual situations.
According to the control method of the drum washing machine, the washing machine controls the first inner cylinder and/or the second inner cylinder to operate, and clothes in the first inner cylinder or the second inner cylinder are independently washed in a partitioning mode.
Further, when the washing machine executes a first inner barrel washing program and the rotating speed of the first inner barrel is controlled to exceed a first set value N1, the first centrifugal valve opens the first water outlet to drain water;
when the washing machine executes a second inner barrel washing program, and the rotating speed of the second inner barrel is controlled to exceed a first set value N2, the second centrifugal valve opens a second water outlet to drain water;
the second set value N2 is less than or equal to the first set value N1.
Example six
The embodiment provides a control method of a drum washing machine according to the fifth embodiment, the drum washing machine includes a first inner drum and a second inner drum disposed inside the first inner drum, the second inner drum has a closable independent washing chamber, and when washing clothes, washing water is independently contained, the washing machine controls the first inner drum and/or the second inner drum to operate, and the clothes in the first inner drum or the second inner drum are independently washed in a partitioning manner.
According to the control method of the drum washing machine, the first inner cylinder and/or the second inner cylinder are/is controlled to operate, so that the first inner cylinder independently works, the second inner cylinder independently works or the working conditions of water inlet, washing, dehydration, water drainage and the like when the first inner cylinder and the second inner cylinder jointly work are achieved, and the aim of independently washing clothes in the first inner cylinder or the second inner cylinder in a partitioning mode is achieved.
Further, the second inner cylinder is a non-porous cylinder, a second inner cylinder door capable of being opened/closed is arranged on a cylinder opening of the second inner cylinder, the second inner cylinder door is closed to form a closeable independent washing chamber with the non-porous cylinder, and the drum washing machine further comprises a water inlet system communicated with the inside of the second inner cylinder.
The second inner cylinder of the drum washing machine of the embodiment adopts a non-porous cylinder design, and can independently wash clothes.
Further, a second water outlet is formed in the side wall of the second inner cylinder, and a second centrifugal valve used for keeping the water outlet normally closed is arranged on the second water outlet.
The control method comprises the following steps: the washing machine controls the rotating speed of the second inner cylinder to exceed a second set value N2, the second centrifugal valve opens the second water outlet, and water in the second inner cylinder is discharged into the first inner cylinder.
The control method of the embodiment further comprises a first inner cylinder and a second inner cylinder working together mode, wherein in the water inlet process, the rotating speed of the second inner cylinder is controlled to exceed a second set value N2, the second centrifugal valve opens a second water outlet, and water entering the second inner cylinder from a water inlet system is discharged into the first inner cylinder;
when the water level in the first inner cylinder reaches a set value, the rotating speed of the second inner cylinder is controlled to be lower than a second set value N2 or kept still until the water level in the second inner cylinder reaches the set value, and the water inlet system stops water inlet.
Further, in the drainage process or the dehydration process, the rotating speed of the second inner cylinder is controlled to exceed a second set value N2, the second centrifugal valve opens the second water outlet, and water in the second inner cylinder is discharged into the first inner cylinder and is discharged through the first inner cylinder.
As an implementation mode of the embodiment, the first inner cylinder is a non-porous cylinder, a first inner cylinder door capable of being opened/closed is arranged on a cylinder opening of the first inner cylinder, the first inner cylinder door is closed to form a closed independent washing chamber with the non-porous cylinder, a first water outlet is formed in the side wall of the first inner cylinder, and a first centrifugal valve used for keeping the water outlet normally closed is arranged on the first water outlet.
The control method of the embodiment comprises the following steps: in the water inlet process, the rotating speed of the second inner cylinder is controlled to be larger than or equal to a second set value N2 and smaller than a first set value N1, the second centrifugal valve opens the second water outlet, the first centrifugal valve keeps the first water outlet closed, and water entering the second inner cylinder from the water inlet system is discharged into the first inner cylinder, wherein the second set value N2 is smaller than the first set value N1.
Further, in the drainage process or the dehydration process, the first inner cylinder and the second inner cylinder are controlled to synchronously rotate at a rotating speed larger than a first set value N1, the second centrifugal valve opens the second water outlet, the first centrifugal valve opens the first water outlet, water in the second inner cylinder is discharged into the first inner cylinder through the second water outlet, and is discharged through the first water outlet of the first inner cylinder.
Further, in the washing or rinsing process, the first inner cylinder and the second inner cylinder are controlled to synchronously rotate at a rotating speed smaller than a second set value N2, the first centrifugal valve keeps the first water outlet closed, and the second centrifugal valve keeps the second water outlet closed.
The control method of the embodiment realizes the working conditions of water inlet, washing, water discharge, dehydration and the like when the first inner cylinder and the second inner cylinder work simultaneously by limiting the rotation speeds of the first inner cylinder and the second inner cylinder, thereby realizing the simultaneous and independent washing of the two inner cylinders.
When the first inner cylinder and the second inner cylinder are of a hole-free cylinder structure, the control method comprises an independent working mode of the second inner cylinder, the washing machine controls the second inner cylinder and the first inner cylinder to rotate together at a rotating speed smaller than a second set value N2 to execute a washing working condition, and controls the second inner cylinder and the first inner cylinder to rotate together at a rotating speed larger than the first set value N1 to execute a drainage or dehydration working condition.
The foregoing description is only illustrative of the preferred embodiment of the present application, and is not to be construed as limiting the application, but is to be construed as limiting the application to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the application, may be made by those skilled in the art without departing from the scope of the application.
Claims (7)
1. The control method of the drum washing machine, the drum washing machine includes the first inner cylinder and second inner cylinder set up in first inner cylinder, said second inner cylinder has independent washing chambers that can be closed, hold the wash water independently while washing the clothes, characterized by that, the washing machine controls the first inner cylinder and/or second inner cylinder to run, carry on the subregion and wash independently to the clothes in the first inner cylinder or second inner cylinder;
the second inner cylinder is a non-porous cylinder, a second inner cylinder door which can be opened/closed is arranged on a cylinder opening of the second inner cylinder, a closeable independent washing chamber is formed by closing the second inner cylinder door and the non-porous cylinder, and the drum washing machine further comprises a water inlet system communicated with the inside of the second inner cylinder;
the first inner cylinder is a hole-free cylinder, a first inner cylinder door capable of being opened/closed is arranged on a cylinder opening of the first inner cylinder, a closed independent washing chamber is formed by closing the first inner cylinder door and the hole-free cylinder, a first water outlet is formed in the side wall of the first inner cylinder, and a first centrifugal valve for keeping the water outlet normally closed is arranged on the first water outlet;
a second water outlet is formed in the side wall of the second inner cylinder, and a second centrifugal valve for keeping the water outlet normally closed is arranged on the second water outlet;
the control method comprises the following steps: the washing machine controls the rotating speed of the second inner cylinder to exceed a second set value N2, the second centrifugal valve opens a second water outlet, and water in the second inner cylinder is discharged into the first inner cylinder;
the water inlet system comprises a first inner cylinder and a second inner cylinder which jointly work in a mode, wherein in the water inlet process, the rotating speed of the second inner cylinder is controlled to exceed a second set value N2, a second centrifugal valve opens a second water outlet, and water entering the second inner cylinder from the water inlet system is discharged into the first inner cylinder;
when the water level in the first inner cylinder reaches a set value, controlling the rotating speed of the second inner cylinder to be lower than a second set value N2 or keeping static until the water level in the second inner cylinder reaches the set value, and stopping water inlet of the water inlet system;
in the water draining process or the dehydration process, the rotating speed of the second inner cylinder is controlled to exceed a second set value N2, the second centrifugal valve opens a second water outlet, and water in the second inner cylinder is discharged into the first inner cylinder and is discharged through the first inner cylinder;
comprises an outer cylinder, an inner cylinder, and a pressurizing mechanism and/or a pressure releasing mechanism for communicating the inner cylinder with the external environment to balance the air pressure in the inner cylinder; the inner barrel comprises the first inner barrel and the second inner barrel;
the device comprises an inner cylinder shaft, wherein a hollow channel communicated with the inside of the inner cylinder is formed in the inner cylinder shaft;
the pressurizing mechanism comprises a pressurizing pore canal and a negative pressure safety valve, and the negative pressure safety valve is arranged on the pressurizing pore canal; when the internal pressure of the inner cylinder is smaller than the external environment atmospheric pressure, the pressurizing pore canal is unidirectionally conducted, external environment gas enters the inner cylinder from the pressurizing pore canal to be pressurized until the internal air pressure of the inner cylinder is balanced with the external environment air pressure, and the negative pressure safety valve is closed;
the pressure relief mechanism comprises a pressure relief pore canal and a positive pressure safety valve, the pressure relief pore canal is arranged on the inner cylinder at a position close to the rotating central shaft and is always higher than the highest water level position in the inner cylinder, and the positive pressure safety valve is arranged on the pressure relief pore canal; when the internal pressure of the inner cylinder is greater than the external environment atmospheric pressure, the pressure relief pore canal is conducted in a one-way to relieve pressure until the internal pressure of the inner cylinder is balanced with the external environment atmospheric pressure, and the positive pressure relief valve is closed;
the pressure relief pore canal comprises a first pore canal section and a second pore canal section, the first pore canal section is arranged in parallel with the hollow channel, one end of the first pore canal section is communicated with the inside of the inner cylinder, one end of the second pore canal section is communicated with the first pore canal section, and the other end of the second pore canal section extends to the peripheral wall of the inner cylinder shaft and is communicated with the inside of the outer cylinder;
one end of the pressurizing pore canal is communicated with the hollow channel, and the other end of the pressurizing pore canal extends to the peripheral wall of the inner cylinder shaft and is communicated with the inside of the outer cylinder.
2. The control method according to claim 1, wherein the control method comprises an independent operation mode of the second inner cylinder, wherein the second inner cylinder is controlled to be kept stationary during water inflow, and water in the water inflow system only enters the second inner cylinder.
3. The control method according to claim 2, characterized in that the control method comprises: in the water inlet process, the rotating speed of the second inner cylinder is controlled to be larger than or equal to a second set value N2 and smaller than a first set value N1, the second centrifugal valve opens the second water outlet, the first centrifugal valve keeps the first water outlet closed, and water entering the second inner cylinder from the water inlet system is discharged into the first inner cylinder, wherein the second set value N2 is smaller than the first set value N1.
4. A control method according to claim 3, wherein the first inner cylinder and the second inner cylinder are controlled to synchronously rotate at a rotational speed greater than a first set value N1 during the draining process or the dewatering process, the second centrifugal valve opens the second water outlet, the first centrifugal valve opens the first water outlet, and water in the second inner cylinder is discharged into the first inner cylinder through the second water outlet and is discharged through the first water outlet of the first inner cylinder.
5. A control method according to claim 3, wherein the first inner cylinder and the second inner cylinder are controlled to rotate synchronously at a rotational speed smaller than a second set value N2 during washing or rinsing, the first centrifugal valve keeps the first drain port closed, and the second centrifugal valve keeps the second drain port closed.
6. A control method according to claim 3, wherein the control method includes a second inner tub independent operation mode, the washing machine controls the second inner tub and the first inner tub to rotate together at a rotation speed smaller than a second set value N2 to perform a washing operation, and controls the second inner tub and the first inner tub to rotate together at a rotation speed larger than the first set value N1 to perform a draining or dehydrating operation.
7. A drum washing machine employing the control method as claimed in any one of claims 1 to 6.
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| CN101935938A (en) * | 2010-09-09 | 2011-01-05 | 南京乐金熊猫电器有限公司 | Washing machine inner cylinder and washing machine using same |
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Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant after: QINGDAO HAIER DRUM WASHING MACHINE Co.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER DRUM WASHING MACHINE Co.,Ltd. Applicant before: QINGDAO HAIER JOINT STOCK Co.,Ltd. |
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Effective date of registration: 20230802 Address after: Room 221, Sino German Ecological Park Management Committee, No. 2877, Tuanjie Road, Huangdao District, Qingdao, Shandong 266500 Applicant after: QINGDAO HAIER WASHING ELECTRIC APPLIANCES Co.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER DRUM WASHING MACHINE Co.,Ltd. Applicant before: Haier Zhijia Co.,Ltd. |
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