WO2020177769A1

WO2020177769A1 - Washing machine and control method therefor

Info

Publication number: WO2020177769A1
Application number: PCT/CN2020/078365
Authority: WO
Inventors: 赵志强; 许升; 吕佩师
Original assignee: 青岛海尔滚筒洗衣机有限公司; 海尔智家股份有限公司
Priority date: 2019-03-07
Filing date: 2020-03-09
Publication date: 2020-09-10
Also published as: CN111663296A; CN111663296B

Abstract

Disclosed are a washing machine and a control method therefor. The washing machine comprises: an inner tub (17) provided with an inner tub port; an inner tub door (6) mounted at the inner tub port of the inner tub (17) in an openable and closable manner; and a position detection device configured to detect whether the inner tub door (6) is closed at an exact position, wherein the position detection device comprises a position sensor (33) and a detected terminal (38); the detected terminal (38) is arranged on the inner tub door (6); and the position sensor (33) is arranged at the position corresponding to the detected terminal (38).

Description

Washing machine and its control method

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office with application number 201910171136.1 on March 7, 2019. The entire content of the application is incorporated into this application by reference.

Technical field

This application relates to the field of washing machines, for example, to a washing machine and a control method thereof.

Background technique

As the most widely used household appliance in people's daily life, washing machine helps people get rid of the trouble of laundry and brings great convenience to people. However, washing machines also have certain shortcomings, such as longer time-consuming and larger water consumption. With the development of society, water resources are becoming more and more important as an important natural resource, and people’s awareness of water saving also changes. In order to improve the water-saving function of the washing machine, the non-porous inner tube structure is adopted, but the biggest problem of the non-porous inner tube structure is the sealing and closing of the inner tube door. If the inner tube door is not closed in place, it is easy to be unlocked Circumstances, cause water leakage during washing or rinsing and dehydration, or prevent the door from being locked in place due to user negligence, causing damage due to high-speed rotation.

Summary of the invention

The application provides a washing machine and a control method thereof.

A washing machine including:

Inner cylinder with inner cylinder mouth;

The inner cylinder door can be opened and closed on the inner cylinder mouth of the inner cylinder;

The position detection device is configured to detect whether the inner cylinder door is closed in place.

A control method of a washing machine, a main controller of the washing machine judges whether the inner drum door is closed in place according to a signal detected by a position detection device.

After adopting the above technical solution, the washing machine of the present application is provided with a position detection device on the inner drum door, which can accurately determine whether the inner drum door is closed in place.

Description of the drawings

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

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

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

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

FIG. 5 is a schematic diagram of the principle of a drum washing machine in Embodiment 3 of the present application;

Fig. 6 is a partial enlarged view of the drum washing machine in Fig. 5 of the present application in a pressure relief state;

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

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

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

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

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

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

13 is a schematic diagram of the principle of a drum washing machine in Embodiment 5 of the present application;

14 is a bottom view of the drum washing machine in the fifth embodiment of the present application;

15 is a schematic diagram of a three-dimensional structure of a drum washing machine in Embodiment 5 of the present application;

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

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

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

19 is a flowchart of an implementation manner of a method for controlling a drum washing machine in Embodiment 7 of the present application;

20 is a schematic structural diagram of an eight drum washing machine in the embodiment of the present application;

FIG. 21 is a partial enlarged view of FIG. 20 of the eight drum washing machine in the embodiment of the present application;

Figure 22 is a schematic structural diagram of a washing machine in Example 9 of the present application;

Fig. 23 is a control method of a washing machine in the tenth embodiment of the present application.

In the figure: 1. Flow sensor; 2. Upper panel; 3. Detergent box; 4. Main controller; 5. Door body; 6. Inner tube door; 61, Rotating part; 62, Pushing part; 7. Drainage 8. Drainage pipeline; 9. Bottom foot; 10. Ejector mechanism; 11. One-way valve plug; 12. Bearing; 13. Inner cylinder shaft; 14. Hollow channel; 15. First dynamic seal structure; , Drive motor; 17, inner tube; 18, outer tube; 19, shell; 20, water inlet valve; 21, water measuring tank; 22, water level detection device; 23, water tank drain pump; 24, overflow hole; 25 , Water tank drain valve; 26, heating device; 27, pressure equalizing channel; 28, booster channel; 29, negative pressure safety valve; 30, pressure relief channel; 31, positive pressure safety valve; 32, mounting bracket; 33, position Sensor; 34. Fixed knot; 35. Locking mechanism; 38. Terminal to be detected; 39. Locking groove; 40. Locking lever; 41. Locking motor; 42. Rear wall of outer cylinder; 43. Lifting rib; 44. , Door body push and close device.

detailed description

In order to make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments will be described clearly and completely in conjunction with the drawings in the embodiments of the present application.

In the description of this application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be understood as a limitation of this application.

In the description of this application, it should be noted that the terms "installation", "connection", and "connection" should be interpreted broadly unless otherwise clearly specified and limited. For example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be mechanically or electrically connected; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this application can be understood under specific circumstances.

As shown in Figures 1 to 18, this embodiment provides a front-opening drum washing machine with a non-porous inner tub. The structure is simple and can eliminate the need to fill washing/rinsing water between the inner tub and the outer tub, thereby greatly increasing The washing water consumption of the washing machine is reduced. The possibility of dirt adhesion between the inner cylinder and the outer cylinder is avoided. Greatly improve user health and user experience, and greatly save water resources.

The drum washing machine of this embodiment has a housing 19, which includes: an upper panel 2, a front panel, a back panel, and a bottom plate. A foot 9 is fixed on the bottom plate and configured to support the entire washing machine. The housing 19 has an outer cylinder 18 inside. The outer cylinder 18 includes an outer cylinder rear wall 42, and an inner cylinder 17 is coaxially arranged in the outer cylinder 18. The outer cylinder 18 collects the drainage of the inner cylinder 17 and the drainage of the inner cylinder 17 for high-speed centrifugal dehydration. The inner wall of the inner tube 17 is provided with lifting ribs 43. When the inner tube 17 rotates, the lifting ribs 43 are continuously lifted and dropped to hit the clothes so as to wash the clothes. The inner cylinder 17 has a non-porous structure. The outer cylinder 18 has a central mounting hole, and the central mounting hole is configured to install the fixed bearing 12. The inner cylinder shaft 13 tightly connected to the inner cylinder 17 passes through the bearing 12 and is connected to the drive motor 16. The inner cylinder door 6 that can be opened or closed is installed on the front cylinder mouth of the inner cylinder 17, thereby realizing the inner cylinder 17 as a sealed cabin structure.

A door 5 that can be opened or closed is installed on the housing 19 of this embodiment.

Example one

This embodiment can solve the problem of how to accurately determine the amount of water in the non-porous inner drum drum washing machine. The specific solution is as follows:

A drum washing machine, comprising an inner tub 17 and a water inlet pipe connected to the inner tub 17. The inner tub 17 is a non-porous inner tub for containing washing water when washing clothes, and the water inlet pipe is provided with Flow sensor 1 for detecting the inflow water flow.

In this embodiment, a flow sensor 1 is installed on the water inlet pipe to monitor the flow rate when the water enters. When the set water inlet amount is reached, the water inlet valve 20 is closed to complete the water inlet. In this embodiment, the flow sensor is used to solve the water inflow problem of the non-porous inner drum washing machine according to the set water level, ensuring the washing effect, simple structure and convenient operation.

The drum washing machine of this embodiment includes a water inlet valve 20 and a detergent box 3. The water inlet pipe includes a first water inlet pipe and a second water inlet pipe. The outlet end of the water inlet valve 20 is connected to the detergent through the first water inlet pipe. In the box 3, the outlet end of the detergent box 3 is connected to the inner cylinder 17 through a second water inlet pipe, and the flow sensor 1 is arranged on the first water inlet pipe or the second water inlet pipe.

The flow sensor 1 is arranged on the first water inlet pipe, so that the detergent in the detergent box 3 can enter the flow sensor 1.

The drum washing machine of this embodiment includes a main controller 4, and the flow sensor 1 and the main controller 4 are electrically connected through a line. The main controller 4 can collect the water inflow of the inner cylinder 17 in real time to reach the set water inflow, and close the water inlet valve 20.

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

The flow sensor 1 can be arranged at any position on the water inlet pipe in this embodiment. The flow sensor 1 can be arranged at the rear of the water inlet valve 20 to accurately measure the water flow into the sealed inner cylinder 17. The flow sensor 1 is connected to the main controller 4, and the main controller 4 can collect the water intake of the inner cylinder 17 in real time. , To reach the set water inlet, close the inlet valve 20.

In order to realize the inflow of water into the non-porous inner drum of this embodiment, the drum washing machine of this embodiment includes a drive motor 16 and an inner drum shaft 13. The drive motor 16 drives the inner drum through a transmission connection between the inner drum shaft 13 and the inner drum 17. The barrel 17 rotates, the inner barrel shaft 13 has a hollow channel 14 communicating with the inside of the inner barrel 17, and the water inlet pipe communicates with the hollow channel of the inner barrel shaft 13.

The inner cylinder shaft 13 is connected to a drive motor 16. The drive motor 16 includes a stator and a rotor, and the rotor is fixedly connected to the inner cylinder shaft 13; a through hole is provided at the center of the rotor, and the water inlet pipe passes through the rotor. The hole communicates with the hollow channel 14 of the inner cylinder shaft 13.

A first dynamic sealing structure 15 is provided between the water inlet pipe and the through hole of the rotor, and a second sealing structure is provided between the through hole of the rotor and the hollow passage 14 of the inner cylinder shaft 13.

In order to achieve drainage of the non-porous inner tub, the drum washing machine of this embodiment includes an outer tub 18, an inner tub drain hole is provided on the side wall of the inner tub 17, and a normally closed one-way valve plug 11 is installed on the inner tub drain hole. The said outer cylinder 18 is provided with a jack mechanism 10 for pushing the one-way valve plug 11 to drain water.

The outer cylinder 18 is also provided with a locking mechanism for locking the inner cylinder 17 from rotating. After the inner cylinder is locked by the locking mechanism, the ejector mechanism 10 pushes the one-way valve plug 11 to drain.

In order to achieve dehydration of the non-porous inner cylinder, a plurality of dehydration holes are opened on the side wall of the inner cylinder 17 in this embodiment, and centrifugal valves are installed on the dehydration holes. drain.

This embodiment also provides a method for controlling the drum washing machine. The washing machine executes a washing or rinsing process. During the water intake process, the flow sensor detects the water intake flow value in real time. The washing machine calculates the water intake according to the water intake flow value and the water intake time. , When the water inflow reaches the set water inflow of the washing machine, stop the water inflow.

The drum washing machine is provided with multiple inlet water flow values that can be selected by the user, and the washing machine performs water inlet according to the inlet water flow value selected by the user.

The drum washing machine has a laundry weighing function, which can determine the flow value of the inlet water according to the weight of the laundry.

Example two

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

The drum washing machine of this embodiment is provided with a water measuring device, which enters the water measuring device for quantitative measurement before water is poured into the inner tub 1, and determines the number of times the water measuring device measures water according to the set water level, thereby solving The non-porous inner drum drum washing machine ensures the washing effect according to the water inlet problem of the set water level, and has a simple structure and convenient operation.

As shown in Figures 2 to 4, the water measuring device of this embodiment includes a water measuring tank 21, which has a water inlet and a water outlet, the water inlet is connected to the water inlet pipe, and the water outlet is connected to the inner cylinder 17; The water outlet is provided with a water outlet control device for controlling the opening of the water outlet when the amount of water in the equivalent water tank 21 reaches a set value.

As an implementation of this embodiment, as shown in FIG. 2, the water measuring tank 21 is provided at the bottom of the inner cylinder 17, and the water measuring device includes a water level detecting device 22 for detecting the water measuring tank 21, The water outlet control device is a water tank drain pump 23, and the water tank drain pump 23 starts the water tank drain pump 23 when the water level detection device 22 detects that the water level in the water measuring tank 21 reaches a set value. The water is pumped into the inner cylinder 17.

As an implementation of this embodiment, as shown in FIG. 3, the water measuring tank 21 is arranged on the upper part of the inner cylinder 17, and the water measuring device includes a water level detecting device 22 for detecting the water measuring tank. The water outlet control device is a water tank drain valve 25. The water tank drain valve 25 opens when the water level detection device 22 detects that the water level in the water measuring tank 21 reaches a set value, and discharges the water in the water measuring tank 21 into the inner cylinder. .

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

As an implementation of this embodiment, the water measuring tank 21 is arranged on the upper part of the inner cylinder 17, the water outlet is arranged on the bottom wall of the water measuring tank 21, and the water outlet control device is to keep the water outlet normally closed. The water tank check valve, when the water volume in the water tank reaches a certain value, the water tank check valve opens under water pressure gravity, and the water in the water measuring tank 21 is discharged into the inner cylinder 17, and the water tank check valve resets to keep the water outlet closed .

The water measuring tank 21 described in this embodiment is provided with an overflow hole 24, and the overflow hole 24 is connected to an overflow pipe for leading out the overflowing water in the water measuring tank.

The drum washing machine includes a drain port 7 and a drain pipe 8. The drain pipe 8 is installed at the drain port 7, and the overflow pipe is connected to the drain pipe 8.

As an implementation of this embodiment, as shown in FIG. 4, the water measuring device includes a heating device 26 arranged in the water measuring tank 21 and a water temperature detecting device for detecting the water temperature in the water measuring tank.

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

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

Example three

This embodiment can solve the problem of how to ensure the unbalanced air pressure in the sealed compartment of the non-porous inner drum washing machine. Specifically, it can solve the sudden water cut of the solenoid valve, especially the water cut of the tap water pipe network, forming a negative pressure, and sealing the washing water in the compartment Backwash to the pipe network; or there is gas inside, and it is difficult to enter water.

As shown in FIGS. 5-7, a drum washing machine of this embodiment includes an inner tube 17, which is a non-porous inner tube, configured to hold washing water when washing clothes, and also includes an inner tube 17 for communicating with The air pressure balance mechanism with the external environment, the air pressure balance mechanism is used to balance the air pressure inside the inner cylinder.

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

When the water is suddenly cut off, the external atmosphere can quickly enter the sealed cabin of the inner cylinder 17 and break the suction, ensure the air pressure balance, and prevent the washing water from being sucked into the tap water pipe network.

In other cases, such as dehydration, the air pressure balance mechanism can also ensure the air pressure balance of the inner cylinder 17.

As an implementation of this embodiment, the air pressure balancing mechanism includes a pressure equalizing channel 27 provided on the inner cylinder 17, and one end of the pressure equalizing channel 27 connected to the inner cylinder 17 is provided on the inner cylinder 17 close to rotating The position of the central axis is always higher than the highest water level in the inner cylinder 17, as shown in Figs. 6 and 7.

The drum washing machine of this embodiment includes a driving motor 16 and an inner drum shaft 13. The driving motor 16 drives the inner drum 17 to rotate through a transmission connection between the inner drum shaft 13 and the inner drum 17, and the pressure equalizing channel 27 is opened in the inner drum. On the shaft 13, the inside of the inner cylinder 17 is communicated with the external environment, and the highest water level in the inner cylinder 17 is lower than the inner cylinder shaft 13. In this way, the water in the inner cylinder 17 can be prevented from flowing out through the pressure equalizing channel 27.

The drum washing machine of this embodiment includes an outer tub 18, the inner tub 17 is arranged inside the outer tub 18, the water discharged from the inner tub 17 is discharged through the outer tub 18, and the inner tub opening of the inner tub 17 is installed for sealing the inner tub. The inner cylinder door 6 of the cylinder, the cylinder mouth of the outer cylinder 18 is open, one end of the pressure equalization channel 27 is connected to the inner cylinder 17, and the other end is arranged inside the outer cylinder 18 and communicates with the inner cylinder 18. In this way, to prevent extreme situations, even if the pressure equalizing channel 27 exits the water, it can be collected in the outer cylinder 18.

In this embodiment, the inner cylinder 17 has an inner cylinder drain hole, a normally closed one-way valve plug 11 is installed on the inner cylinder drain hole, and the outer cylinder 18 is installed to top the one-way valve plug 11 Open the ejector mechanism 10 for draining water.

The outer cylinder 18 is also provided with a locking mechanism for locking the inner cylinder from rotating. After the locking mechanism locks the inner cylinder, the ejector mechanism pushes the one-way valve plug to drain water.

The drum washing machine of this embodiment includes a water inlet pipe, the inner drum shaft 13 has a hollow channel 14 communicating with the inside of the inner drum 17, and the water inlet pipe communicates with the hollow passage 14 of the inner drum shaft 13; The pressure equalizing channel 27 and the hollow channel 14 respectively communicate with the interior of the inner cylinder 17 and are separated from each other. In this way, it can be ensured that the gas in the sealed compartment of the inner cylinder 17 can be smoothly discharged to maintain the pressure balance inside the inner cylinder 17, and at the same time, it is prevented that the influent water is directly discharged through the pressure equalizing channel 27 and leaks.

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

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

The inner cylinder shaft 13 is connected to a drive motor 16. The drive motor 16 includes a stator and a rotor, and the rotor is fixedly connected to the inner cylinder shaft 13; a through hole is provided at the center of the rotor, and the water inlet pipe passes through the rotor. The hole communicates with the hollow passage of the inner cylinder shaft 13.

In the drum washing machine in this embodiment, a plurality of dehydration holes are opened on the side wall of the inner tub 17, and centrifugal valves are installed on the dehydration holes, and the centrifugal valves are opened under the action of the dehydration centrifugal force to perform dehydration and drainage.

Example four

As shown in Figures 8-12, a drum washing machine of this embodiment includes an inner tube 17, which is a non-porous inner tube, configured to contain washing water when washing clothes, and also includes an inner tube 17 for communicating with A mechanism for balancing the air pressure inside the inner cylinder 17 with the external environment. The mechanism includes at least one of the following: a pressure increasing mechanism and a pressure relief mechanism.

The pressurizing mechanism in this embodiment includes a pressurizing port 28 and a negative pressure safety valve 29. The negative pressure safety valve 29 is arranged on the pressurizing port 28. When the internal pressure of the inner cylinder 17 is lower than the atmospheric pressure of the external environment, the negative pressure The pressure safety valve 29 is configured as a unidirectional pressure boosting port 28, and the external ambient air enters the inner cylinder 17 through the boosting port 28 to be pressurized until the internal pressure of the inner cylinder 17 balances with the ambient pressure, and the negative pressure safety valve 29 is closed.

The pressure relief mechanism described in this embodiment includes a pressure relief port 30 and a positive pressure safety valve 31. The pressure relief port 30 is arranged on the inner cylinder 17 at a position close to the central axis of rotation and is always higher than the highest in the inner cylinder 17. Water level position, the positive pressure safety valve 31 is set on the pressure relief port 30. When the internal pressure of the inner cylinder 17 is greater than the atmospheric pressure of the outside environment, the positive pressure safety valve 31 is configured as a unidirectional pressure relief port 30 for pressure relief until The air pressure inside the inner cylinder 17 is balanced with the air pressure of the external environment, and the positive pressure safety valve 31 is closed.

As shown in Figure 9, when water enters, the gas in the sealed compartment of the inner cylinder 17 is pressurized. Once it is greater than the setting value of the positive pressure safety valve 31, the positive pressure safety valve 31 opens and can overflow through the pressure relief port 30. Ensure that the air pressure is balanced.

As shown in Figure 10, when the water is suddenly cut off, the gas in the sealed compartment of the inner cylinder 17 is pressurized. Once it is less than the set value of the negative pressure safety valve 29, the external atmosphere can quickly enter the sealed compartment and destroy the back suction to ensure the air pressure balance. , To avoid washing water being sucked into the tap water pipe network.

In other cases, such as dehydration, the air pressure balance mechanism can also ensure the air pressure balance of the inner cylinder.

The drum washing machine of this embodiment includes a driving motor 16 and an inner drum shaft 13. The driving motor 16 is in transmission connection with the inner drum 17 through the inner drum shaft 13 and drives the inner drum 17 to rotate. At least one of the holes 30 is opened on the inner cylinder shaft 13 to make the inside of the inner cylinder 17 communicate with the external environment. The highest water level in the inner cylinder 17 is lower than the inner cylinder shaft 13.

The drum washing machine of this embodiment includes an outer tub 18, the inner tub 17 is arranged inside the outer tub 18, the water discharged from the inner tub 17 is discharged through the outer tub 18, and the inner tub opening of the inner tub 17 is installed to seal the inner tub The inner cylinder door 6 of the outer cylinder 18 is open, at least one of one end of the pressure-increasing channel 28 and one end of the pressure-releasing channel 30 communicates with the inner cylinder 17, and the other end is arranged inside the outer cylinder 18 and the outer cylinder 18 intercommunicating.

The drum washing machine of this embodiment includes a water inlet pipe, the inner barrel shaft 13 has a hollow channel 14 communicating with the inner barrel 17, and the water inlet pipe communicates with the hollow channel 14 of the inner barrel shaft 13; The pressure relief channel 30 and the hollow channel 14 are respectively communicated with the inner cylinder 17 and are separated from each other.

As shown in Figures 9 and 10, the hollow passage 14 extends from one end to the other along the central axis direction of the inner cylinder shaft 13. The pressure relief port 30 includes a first port section and a second port section. The tunnel section is arranged in parallel with the hollow passage. One end of the first tunnel section is connected to the inner cylinder 17, one end of the second tunnel section is connected with the other end of the first tunnel section, and the other end of the second tunnel section extends to the inner cylinder shaft. The outer peripheral wall of 13 communicates with the inside of the outer cylinder 18.

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

The drum washing machine of this embodiment includes a water inlet pipe, the inner barrel shaft 13 has a hollow channel 14 communicating with the inner barrel 17, and the water inlet pipe communicates with the hollow channel 14 of the inner barrel shaft 13; The pressurizing port 28 is communicated with the hollow passage 14.

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

The pressure-increasing channel 28 and the hollow channel 14 can be arranged perpendicular to each other.

In this embodiment, the inner cylinder shaft 13 is connected to a driving motor 16. The driving motor 16 includes a stator and a rotor, and the rotor is fixedly connected to the inner cylinder shaft 13; a through hole is provided at the center of the rotor, and the water inlet pipe passes through The through hole of the rotor communicates with the hollow channel 14 of the inner cylinder shaft 13.

A first dynamic sealing structure 15 is provided between the water inlet pipe and the through hole of the rotor, and a second sealing structure is provided between the through hole of the rotor and the hollow passage of the inner cylinder shaft.

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

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

Example five

As shown in Figures 13-16, the drum washing machine of this embodiment includes an inner tube 17, which is a non-porous inner tube, which contains washing water when washing clothes, and also includes a position detection for detecting the position of the inner tube Device.

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

The drum washing machine of this embodiment includes an outer tub 18, the position sensor 33 is arranged on the side of the outer tub 18 close to the driving motor 16, and the position sensor 33 is arranged at intervals corresponding to the detected terminals 38.

As an implementation of this embodiment, the position sensor 33 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 Type sensor, or Hall type sensor.

In this embodiment, by installing a position detection device on the inner cylinder door, it can accurately determine whether the inner cylinder door is closed in place, avoiding errors in human subjective judgment, avoiding unlocking, causing water leakage during washing or rinsing and dehydration, or Prevent the door from being locked in place and rotating at high speed due to user negligence, causing damage.

The drum washing machine of this embodiment includes a locking mechanism 35 for locking the rotation of the inner tub 17, and the position detection device has at least one of the following functions: after the locking mechanism 35 locks the inner tub 17, the position detection The device detects whether the locking mechanism 35 is locked in place, and when the position detection device detects that the inner cylinder 17 is rotated to the set position, the locking mechanism 35 locks the inner cylinder 17.

The locking mechanism 35 is installed on the side wall of the outer cylinder 18 close to the driving motor 16. The locking mechanism 35 includes a locking rod 40 for telescopic movement and a locking motor 41 for driving the locking rod 40 to telescopically move. The rotor of the motor 16 is provided with a locking groove 39 corresponding to the locking lever 40 at a position corresponding to the locking lever 40. When the locking lever 40 is driven by the locking motor 41 to extend into the locking groove 39, The inner cylinder 17 is locked.

In the drum washing machine of this embodiment, the inner drum 17 has an inner drum drain hole, a normally closed one-way valve plug 11 is installed on the inner drum drain hole, and the outer drum 18 is installed for one-way The valve plug 11 pushes open the ejector mechanism 10 for draining water; after the locking mechanism 35 locks the inner cylinder 17, the ejector mechanism 10 pushes the one-way valve plug 11 open for drainage.

The ejector mechanism 10 is mounted on the outer cylinder 18. The ejector mechanism 10 includes a telescopic jack and a jack motor that drives the telescopic motion of the jack. The jack penetrates the wall of the outer cylinder 18 and is inserted into the inner cylinder. The one-way valve plug 11 is pushed open in the drain hole 17 to drain.

The drum washing machine of this embodiment includes a main controller 4, and the position sensor 33, the locking motor 41, and the jack motor are all electrically connected to the main controller.

In this embodiment, the main controller of the washing machine assists in determining the rotation state of the inner tub and performs a lock operation on the motor.

In the drum washing machine of this embodiment, a plurality of dehydration holes are opened on the side wall of the inner tub, and centrifugal valves are installed on the dehydration holes, and the centrifugal valves are opened under the action of the dehydration centrifugal force for dehydration and drainage.

The washing machine of this embodiment has a position sensor 33, which is arranged on the outer tub 18 and the drive motor 16, specifically on the rear of the outer tub 18 and the rotor frame that the drive motor 16 rotates.

The position sensor 33 senses the position of the detected terminal 38 on the rotating rotor frame, converts it into a signal, and feeds it back to the washing machine main controller 4 via a circuit. The position of the detected terminal 38 on the rotor frame corresponds to the position of the rotating inner cylinder 17.

The washing machine of this embodiment has a mounting bracket 32. After the fixing knot 34 is fixed to the outer tub 18, a locking motor 41, a locking rod 40 and a position sensor 33 are installed on the mounting bracket 32; the rotor frame of the driving motor 16 has a locking groove 39 and the detected terminal 38.

Example Six

As shown in Figures 17-18, a drum washing machine of this embodiment includes an inner tube 17 and an outer tube 18. The inner tube 17 is a non-porous inner tube, which contains washing water when washing clothes, and the outer tube 18 is arranged coaxially The outside of the inner cylinder 17 is used to collect the water discharged from the inner cylinder 17 and discharged through the drain pipe 8, and also includes a position detection device arranged on the outer cylinder 18 to detect the position of the inner cylinder.

The position detection device includes a position sensor 33 and a detected terminal 38. The detected terminal 38 is arranged on the inner cylinder 17, and the position sensor 33 is arranged on the inner wall of the outer cylinder 18 and is connected to the detected terminal 38 on the inner cylinder 17. Corresponding settings.

The detected terminal 38 is disposed on the side wall of the inner cylinder 17, the position sensor 33 is disposed on the inner side wall of the outer cylinder 18, and the circumference of the detected terminal 38 on the inner cylinder 17 is connected to the position sensor 33. The circumference on the outer cylinder 18 is arranged concentrically.

The position sensor 33 is arranged on the inner side wall of the upper part of the outer cylinder 18.

The position sensor 33 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 sensor, or a Hall sensor.

The drum washing machine of this embodiment includes a locking mechanism 35 for locking the rotation of the inner tub. The position detection device has at least one of the following functions: after the locking mechanism 35 locks the inner tub 17, the position detection device It is detected whether the locking mechanism 35 is locked in place, and when the position detecting device detects that the inner cylinder 17 is rotated to the set position, the locking mechanism 35 locks the inner cylinder.

The locking mechanism 35 is mounted on the outer cylinder 18. The locking mechanism 35 includes a locking rod 40 for telescopic movement and a locking motor 41 for driving the telescopic movement of the locking rod 40. The inner cylinder 17 corresponds to the locking rod 40. A locking groove 39 is provided to cooperate with it. When the locking rod 40 is extended and inserted into the locking groove 39 under the driving of the locking motor 41, the inner cylinder 17 is locked.

As shown in FIG. 18, as an implementation of this embodiment, a lifting rib 43 is installed at the locking groove 39 to realize that the locking groove 39 is hidden. Or install the detected terminal 38 in the lifting rib 43.

As an implementation of this embodiment, an inner cylinder drain hole is provided on 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 the outer cylinder 18 is installed for The one-way valve plug 11 is pushed out of the jack mechanism 10 for draining; the locking mechanism 35 locks the inner cylinder 17 and then the jack mechanism 10 pushes the one-way valve plug 11 to drain.

The drum washing machine of this embodiment includes a main controller 4, and the position sensor 33, the locking motor 41, and the jack motor are all electrically connected to the main controller 4.

In the drum washing machine of this embodiment, a plurality of dehydration holes are opened on the side wall of the inner tub 17, and centrifugal valves are installed on the dehydration holes, and the centrifugal valves are opened under the action of the dehydration centrifugal force for dehydration and drainage.

Example Seven

A control method of a drum washing machine. The drum washing machine includes an inner tub 17, a position detection device configured to detect the position of the inner tub 17, and a locking mechanism 35 configured to lock the rotation of the inner tub 17. The inner tub 17 is a non-porous inner tub, When washing clothes, containing washing water, the control method includes at least one of the following steps:

When the position detecting device detects that the inner cylinder is rotated to the set position, the locking mechanism is controlled to lock the inner cylinder. After the inner cylinder is locked by the locking mechanism, the position detection device detects whether the locking is in place.

As shown in Figure 19, the washing machine includes a driving motor 16 that drives the inner tub 17 to rotate. During a washing or rinsing process, the washing machine controls the driving motor 16 to decelerate and execute the inner tub 17 stop rotation program. When the inner tub rotates below the set safe speed After that, if the position detecting device detects that the inner cylinder 17 is rotated to the set position, the driving motor 16 is controlled to stop rotating and keep the inner cylinder 17 in place, and the locking mechanism 35 is controlled to lock the inner cylinder 17 to drain water.

The washing machine includes a driving motor 16 that drives the inner tub 17 to rotate. During a washing or rinsing process, the washing machine controls the driving motor 16 to decelerate and execute the inner tub 17 stop rotation program. When the rotation speed of the inner tub 17 drops below the set safe speed, the control locks The mechanism 35 locks the inner cylinder 17, and if the position detection device detects that the inner cylinder 17 is rotated to the set position, the water is drained, otherwise the water drain is not started.

In this embodiment, the inner cylinder 17 has an inner cylinder drain hole, a normally closed one-way valve plug 11 is installed on the inner cylinder drain hole, and the outer cylinder 18 is installed to top the one-way valve plug 11 The ejector mechanism 10 for draining water is opened; the drainage procedure includes: after the inner cylinder 17 is locked by the locking mechanism 35, the ejector mechanism 10 is controlled to open the one-way valve plug 11 for drainage.

The washing machine of this embodiment includes a drive motor 16 that drives the inner tub 17 to rotate. In the dehydration process, the washing machine controls the drive motor 16 to decelerate and execute the inner tub 17 stop rotation program. When the rotation speed of the inner tub 17 drops below the set safe speed, if the position The detection device detects that the inner cylinder 17 rotates to the set position, and controls the driving motor 16 to stop rotating and keep the inner cylinder 17 in place, and controls the locking mechanism 35 to lock the inner cylinder 17, and the dehydration process ends and the door lock is released.

The washing machine of this embodiment includes a drive motor 16 that drives the inner tub 17 to rotate. In the dehydration process, the washing machine controls the drive motor 16 to decelerate and execute the inner tub 17 stop rotation program. When the rotation speed of the inner tub 17 drops below the set safe speed, the control lock The stop mechanism 35 locks the inner cylinder 17, the dehydration process ends, and the door lock is released. If the position detection device does not detect that the inner cylinder 17 is rotated to the set position, an alarm is issued.

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

This embodiment also includes at least one of the following steps: when the rotor rotates to a position relative to the detected terminal 38 and the position sensor 33, the inner cylinder 17 is rotated to the set position; and the locking mechanism 35 locks the inner cylinder 17 Later, when the rotor rotates to the relative position of the detected terminal 38 and the position sensor 33, the inner cylinder 17 is locked in place.

The locking mechanism 35 described in this embodiment is installed on the side wall of the outer cylinder 18 close to the driving motor 16. The locking mechanism 35 includes a locking rod 40 for telescopic movement and a locking motor 41 for driving the locking rod 40 to telescopically move. The rotor of the driving motor 16 is provided with a locking groove 39 corresponding to the locking rod 40. When the locking rod 40 is driven by the locking motor 41 to extend into the locking groove 39, the inner cylinder 17 is locked only.

The drum washing machine of this embodiment includes an outer tub 18. The outer tub 18 is coaxially arranged on the outside of the inner tub 17, and is configured to collect the water discharged from the inner tub 17 and discharge it through the drain pipe 8. The position detection device includes The position sensor 33 and the detected terminal 38, the detected terminal 38 is arranged on the inner cylinder 17, and the position sensor 33 is arranged on the inner wall of the outer cylinder 18 and corresponding to the detected terminal 38 on the inner cylinder 17;

This embodiment also includes at least one of the following steps: when the rotor rotates to a position relative to the detected terminal 38 and the position sensor 33, the inner cylinder 17 is rotated to the set position; and the locking mechanism 35 locks the inner cylinder 17 After that, when the rotor rotates to the relative position of the detected terminal 38 and the position sensor 33, the inner cylinder is locked in place.

The locking mechanism 35 described in this embodiment is installed on the outer cylinder 18. The locking mechanism 35 includes a locking rod 40 for telescopic movement and a locking motor 41 for driving the telescopic movement of the locking rod 40. The inner cylinder 17 has a corresponding lock The position of the stop lever 40 is provided with a locking groove 39 that cooperates with the locking lever 40. When the locking lever 40 is driven by the locking motor 41 to extend and insert into the locking groove 39, the inner cylinder 17 is locked.

Example eight

As shown in Figures 20 and 21, a drum washing machine in this embodiment includes an inner tub 17 and an inner tub door 6. The inner tub 17 has an inner tub opening, and the inner tub door 6 is installed in the inner tub 17 so that it can be opened and closed. The cylinder mouth also includes a position detection device, configured to detect whether the inner cylinder door 6 is closed in place, to avoid unlocking, causing water leakage during washing, rinsing, and dehydration, or preventing the door from being locked in place due to user negligence High-speed rotation causes damage and other problems.

The position detection device includes a position sensor 33 and a detected terminal 38, wherein the detected terminal 38 is provided on the inner cylinder door 6, the position sensor 33 is provided at a position corresponding to the detected terminal 38, the position sensor 33 is fixed, and During the opening or closing of the inner drum door 6, the detected terminal 38 rotates with the inner drum door 6, and the position between the two changes with the rotation of the inner drum door 6, and the generated signal value changes. The received signal value judges whether the inner cylinder door 6 is closed in place.

The inner cylinder door 6 is provided with a locking structure for buckling with the inner cylinder 17, and the detected terminal 38 is provided on the locking structure.

This embodiment also includes an outer cylinder 18 sleeved outside the inner cylinder 17 coaxially with the inner cylinder 17, and the position sensor 33 is arranged on the outer cylinder 18 and corresponds to the position of the detected terminal 38; the position sensor 33 is arranged on the outer wall of the outer cylinder 18 and corresponds to the position of the detected terminal 38. The position sensor 33 is fixed, and the detected terminal 38 rotates with the inner cylinder door 6 during the opening or closing process of the inner cylinder door 6. The position between the two changes with the rotation of the inner drum door 6, and the generated signal value changes. The drum washing machine determines whether the inner drum door 6 is closed in place according to the received signal value.

This embodiment also includes a housing 19, the inner cylinder 17 is arranged in the housing 19, and the position sensor 33 is arranged on the housing 19 corresponding to the position of the detected terminal 38.

The position detection device is an electromagnetic position sensor, including a permanent magnet rotor and an electromagnetic sensor, the permanent magnet rotor is the detected terminal 38, and the electromagnetic sensor is the position sensor 33; or the photoelectric position sensor includes a light shield and a photoelectric sensor, and a light shield Is the detected terminal 38, the photoelectric sensor is a position sensor 33; or a differential voltage sensor, including an armature and a differential voltage sensor, the armature is the detected terminal 38, and the differential voltage sensor is a position sensor 33; or The eddy current sensor includes a metal plate and an eddy current sensor, the metal plate is the detected terminal 38, and the eddy current sensor is the position sensor 33; or the capacitive sensor includes a moving pole, a fixed pole, and a capacitance sensor. The pole is detected terminal 38, the fixed pole and capacitance sensor is the position sensor 33; or the reed switch sensor includes a magnet and the reed switch sensor, the magnet is the detected terminal 38, and the reed sensor is the position Sensor 33; or a Hall sensor, including a permanent magnet and a Hall sensor, the permanent magnet is the detected terminal 38, and the Hall sensor is the position sensor 33.

This embodiment also includes a main controller 4, and the main controller 4 is electrically connected to the position sensor 33.

This embodiment also includes a control method of a drum washing machine. The main controller 4 of the drum washing machine judges whether the inner drum door 6 is closed in place according to the signal detected by the position detection device, so as to avoid unlocking, causing washing or rinsing and dehydration. In case of water leakage, or to prevent the door from being locked in place and rotating at a high speed due to user negligence, problems such as damage.

The signal value generated between the detected terminal 38 and the position sensor 33 when the inner drum door 6 is closed in place is input into the main controller 4 of the drum washing machine as a reference signal value for judging whether the inner drum door is closed in place.

When the signal value generated between the detected terminal 38 and the position sensor 33 received by the main controller 4 of the drum washing machine is equal to the reference signal value, the main controller 4 of the drum washing machine determines that the inner drum door 6 is closed in place; When the signal value generated between the detected terminal 38 and the position sensor 33 received by the main controller 4 differs from the reference signal value, the main controller 4 of the drum washing machine determines that the inner drum door 6 is not closed in place and reminds the user to close it. The inner cylinder door 6 is good to avoid unlocking, causing water leakage during washing, rinsing and dehydration, or preventing the door from being locked in place and rotating at a high speed due to user negligence and causing damage.

The position detection device in this embodiment can be used as an auxiliary device to assist the main controller 4 to determine the rotation state of the inner cylinder 17 and perform a locking action on the motor.

Example 9

This embodiment mainly solves the problem of how the inner tube door provided at the inner tube mouth of the inner tube can be automatically pushed into place. The specific solution is as follows:

As shown in Figure 22, the drum washing machine provided in this embodiment includes: a casing 19; an inner tub 17 arranged in the casing 19; the inner tub 17 is configured to contain washing water when washing clothes; and the inner tub door 6, which can The opening and closing is installed on the inner cylinder mouth of the inner cylinder 17; it also includes a door body pushing and closing device 44, which is arranged on the housing 19, and the door body pushing and closing device 44 is configured to push and close the inner cylinder door 6 to close.

In this embodiment, through the door pushing and closing device 44 provided on the housing 19, the inner cylinder door 6 can be automatically pushed and closed without manual closing, and the automation is higher, which can effectively prevent the inner cylinder door 6 from being caused by user negligence. The problem of unclosed avoids the risk of the high-speed rotating inner cylinder door 6 falling off.

The door body pushing and closing device 44 includes: a power component; a linkage component connected to the power output end of the power component; the power component drives the linkage component to move and act on the inner tube door 6 to push the inner tube door 6 shut down.

The shell 19 has an opening corresponding to the inner tube opening of the inner tube 17, and a door body 5 that can be opened and closed is installed on the opening. The door body pushing device 44 is arranged on the door body 5 or the shell 19 is close to the inner tube One side of door 6.

In one solution, the power component is the door body 5, and the linkage component is a mechanical linkage mechanism connected to the door body 5. When the user closes the door body 5, a force is applied to the door body 5. Drive the mechanical linkage mechanism to act on the inner cylinder door 6, close the inner cylinder door 6, and close the inner cylinder door 6 while closing the door body 5, saving time and effort. The mechanical linkage mechanism can be a linkage mechanism or a linkage folding mechanism.

The door body pushing and closing device 44 may be an electric pushing and closing mechanism, the power component is a motor arranged in the housing 19, and the linkage component is a cam mechanism or a cam linkage mechanism connected to the power output end of the motor .

As an alternative to the above solution, the power component is an oil pump arranged on the housing 19, and the linkage component is an oil cylinder connected to the power output end of the oil pump; or, the power component is an air pump arranged on the housing , The linkage component is a cylinder connected to the power output end of the air pump.

In this embodiment, the inner cylinder door 6 includes a rotating part 61 rotatably connected with the inner cylinder 17 through a hinge, and a push-fit part 62 provided on the opposite side of the rotating part 61, and the door body push-fit device 44 is provided on the door body. 5 or the position of the corresponding push-fit portion 62 on the housing 19, according to the principle of leverage, the door body push-fit device 44 is correspondingly arranged on the opposite side away from the rotating portion 61, which saves effort and makes it easier to close the inner cylinder door 6.

In this embodiment, the door body pushing and closing device 44 adopts an electric pushing and closing mechanism, which can not only automatically push and close, but also can realize the electric connection of the door body pushing and closing device 44 through the electrical connection of the controller and the motor or the oil pump or the air pump. Control, more automation and intelligence.

Example ten

As shown in Figure 23, a washing machine control method, the washing machine includes: a housing 19; an inner tub 17 for holding washing water when washing clothes; an openable and closable inner tub door 6 installed on the inner tub opening of the inner tub 17 , And an inner cylinder door pushing and closing device 46 arranged in the housing 19 and configured to push the inner cylinder door 6 to close. The control method includes: the washing machine controls the inner cylinder door pushing device 46 to start the pushing and closing inner cylinder door 6 to close.

In this embodiment, the casing 19 of the washing machine has an opening corresponding to the inner tube opening of the inner tube 17, and a door 5 that can be opened and closed is installed on the opening. The control system of the washing machine determines whether the door 5 is closed, and if the judgment is yes, Then the inner tube door pushing and closing device 46 is controlled to start, and the pushing and closing inner tube door 6 is closed; if the judgment is no, the inner tube door pushing and closing device 46 is controlled to remain closed.

In one solution, a control program that can control the activation of the inner tube door pushing and closing device 46 can be set in the control system of the washing machine. The user can start the inner tube door pushing and closing device 46 at any time through the control program as needed, by pressing a button or Press the key or other methods to select and activate the inner cylinder door pushing and closing device 46.

In this embodiment, the door 5 of the washing machine is provided with an electromagnetic lock, which is configured to detect whether the door 5 of the washing machine is closed. If the detection is yes, the control system of the washing machine controls the inner cylinder door pushing and closing device 46 to start and push the inner door. The cylinder door 6 is closed; if the detection is negative, the inner cylinder door pushing and closing device 46 is controlled to keep the closed state and not start.

In this embodiment, the outer tub 18 of the washing machine is provided with a position detection device configured to detect whether the inner tub door 6 is closed in place. The position detection device includes a detected terminal 38 and a position sensor 33. The inner tub door 6 of the washing machine The detected terminal 38 is provided on the upper cylinder, and the inner side wall of the outer tub 18 is provided with a position sensor 33. In this embodiment, the washing machine further includes a main controller 4, and the main controller 4 is electrically connected to the position sensor 33.

The main controller 4 of the washing machine judges whether the inner drum door 6 is closed in place according to the signal detected by the position detection device, so as to avoid unclosed situations, causing water leakage during washing, rinsing and dehydration, or preventing the inner drum door from being caused by user negligence. 6 The problem of damage caused by high-speed rotation without closing in place.

When the washing machine detects that the door body 5 is closed and locked, the position detection device detects whether the inner drum door 6 of the washing machine is closed, and if the detection is yes, the inner drum door pushing and closing device 46 is controlled to remain closed; if the detection is no, the washing machine The control system controls the inner cylinder door pushing and closing device 46 to start, and the pushing and closing inner cylinder door 6 is closed.

After the washing machine detects that the door body 5 is closed and locked, when the position detection device detects that the inner tube door 6 is not closed, the inner tube door pushing device 46 is controlled to act, the pushing and closing inner tube door 6 is closed, and the inner tube door pushing device 46 is closed. After the second action, the position detection device detects that the inner tube door 6 is still not closed in place, and then controls the inner tube door push-closing device 46 to act again and executes the cycle N times. When N is greater than N0 (N0 is the set value), the washing machine Pause and call the police;

The N0 can be 3.

The specific detection method of the position detection device is to input the signal value generated between the detected terminal 38 and the position sensor 33 when the inner drum door 6 is closed in place into the main controller 4 of the washing machine to determine whether the inner drum door 6 is closed. The reference signal value in place.

When the signal value generated between the detected terminal 38 and the position sensor 33 received by the main controller 4 of the washing machine is equal to the reference signal value, the main controller 4 of the washing machine determines that the inner drum door 6 is closed in place and controls the washing machine to wash; When the signal value generated between the detected terminal 38 and the position sensor 33 received by the main controller 4 of the washing machine differs from the reference signal value, the main controller 4 of the washing machine determines that the inner drum door 6 is far away from the closed position and controls the washing machine An alarm signal is issued to remind the user to close the inner cylinder door 6, to avoid unclosed situations, causing water leakage during washing, rinsing and dehydration, or to prevent the door from being closed in place due to user negligence and causing damage due to high-speed rotation of the door.

The eighth to tenth embodiments may be drum washing machines or pulsator washing machines. The embodiments in this application are described by taking drum washing machines as an example.

Claims

A washing machine including:

Inner cylinder with inner cylinder mouth;

The inner cylinder door can be opened and closed on the inner cylinder mouth of the inner cylinder;

The position detecting device is configured to detect whether the inner cylinder door is closed in place.
The washing machine according to claim 1, wherein the position detection device includes a position sensor and a detected terminal, the detected terminal is provided on the inner drum door, and the position sensor is provided with the detected terminal. The corresponding location.
The washing machine according to claim 2, wherein the inner tub door is provided with a locking structure for engaging with the inner tub, and the detected terminal is provided on the locking structure.
The washing machine according to claim 2, further comprising an outer tube sleeved outside the inner tube and coaxial with the inner tube, and the position sensor is provided on the outer tube and is connected to the detected terminal The location corresponds.
The washing machine according to claim 4, wherein the position sensor is provided on the outer wall of the outer tub and corresponds to the position of the detected terminal.
The washing machine according to claim 2, further comprising a housing, the inner tub is provided in the housing, and the position sensor is provided on the housing and corresponds to the position of the detected terminal.
The washing machine according to claim 2, wherein the position detection device is an electromagnetic position sensor, the position sensor is an electromagnetic sensor, and the detected terminal is a permanent magnet rotor;

Or a photoelectric position sensor, the position sensor is a photoelectric sensor, and the detected terminal is a light shield;

Or a differential voltage sensor, the position sensor is a differential voltage sensor, and the detected terminal is an armature;

Or an eddy current sensor, the position sensor is an eddy current sensor, and the detected terminal is a metal plate;

Or a capacitive sensor, the position sensor is a fixed pole and a capacitive sensor, and the detected terminal is a moving pole;

Or a reed switch sensor, the position sensor is a reed switch sensor, and the detected terminal is a magnet;

Or a Hall sensor, the position sensor is a Hall sensor, and the detected terminal is a permanent magnet.
The washing machine according to any one of claims 2 to 7, further comprising a main controller, and the main controller is electrically connected to the position sensor.
The washing machine according to claim 8, further comprising a door body pushing and closing device, an opening is formed on the housing corresponding to the inner tube opening of the inner tube, and an openable door body is installed on the opening; The door body pushing and closing device is arranged on the side of the casing or the door of the washing machine close to the inner tube door, and the door body pushing and closing device is configured to push and close the inner tube door. The door body pushing device is electrically connected with the main controller.
A method for controlling a washing machine according to any one of claims 1 to 9, wherein the main controller of the washing machine determines whether the inner drum door is closed in place according to the signal detected by the position detection device.
According to the control method of the washing machine of claim 10, the main controller is electrically connected to the position detection device.
The control method of the washing machine according to claim 10 or 11, wherein the signal value generated between the detected terminal and the position sensor when the inner drum door is closed in place is set in the main controller of the washing machine , As a reference signal value for judging whether the inner cylinder door is closed in place;

When the signal value generated between the detected terminal and the position sensor received by the main controller of the washing machine is equal to the reference signal value, the main controller of the washing machine determines that the inner drum door is closed in place ；

When the signal value generated between the detected terminal and the position sensor received by the main controller of the washing machine differs from the reference signal value, the main controller of the washing machine determines that the inner drum door Not closed in place.