CN111663297B - Washing machine and control method thereof - Google Patents

Abstract

The invention provides a washing machine and a control method thereof. The washing machine comprises a shell; an inner tube is arranged in the shell, and holds washing water when washing clothes; It also includes: a sealing door pushing device, which is arranged on the shell and is used for pushing and closing the sealing door. The sealing door pushing device includes: a power component; a linkage component connected to the power output end of the power component; the power component drives the movement of the linkage component to act on the sealing door, and pushes the sealing door to close. The washing machine controls the push-close device to automatically assist the push-fit of the sealed door in place, preventing the problem that the sealed door is not closed in place due to user negligence, and avoids the risk of the high-speed rotating sealed door falling off, with higher automation.

Description

A washing machine and its control method

technical field

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

Background technique

With the increasing of people's living standards, the demand for automation and intelligent products is increasing. In the washing machine in the prior art, the outer cylinder holds water and the inner cylinder rotates for washing. There will be dirt and bacteria breeding between the interlayers of the inner and outer cylinders. , the filling of water between the interlayers causes useless water waste. Therefore, people have designed a non-porous inner drum washing machine. The non-porous inner drum washing machine needs to be sealed with a hermetic door, and the hermetic door in the prior art is manually pushed and closed. of.

Application No. 201610395035.9 discloses a washing machine, which includes a housing with an opening on one side, a dodge door for opening or closing the opening, an outer tub arranged in the housing, an inner tub assembly, a water inlet structure, and a water outlet structure; The inner tub assembly includes an inner tub that is rotatably installed in the outer tub, and a sealing door that can be opened and closed and sealed and installed at one end of the inner tub near the opening; the washing machine also includes a The dynamic sealing structure between the inner barrel and the inner barrel; the inner barrel water inlet structure and the inner barrel water outlet structure are provided on the inner barrel; when the water enters, the water inlet structure communicates with the inner barrel water inlet structure; It communicates with the sealing space of the dynamic sealing structure. In the above scheme, it can be seen that due to the negligence of the user, the sealing door cannot be closed properly, resulting in the risk of the high-speed revolving door falling off, causing great damage. Therefore, setting a kind of washing machine that can automatically push and close the sealing door is a problem that those skilled in the art urgently need to solve.

In view of this, the present invention is proposed.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a washing machine and a control method thereof, in which the automatic push-fit of the airtight door can be realized through the provided push-close device.

In order to solve the problems of the technologies described above, the present invention adopts the basic idea of technical solution to be:

A washing machine, comprising: a shell; an inner tube arranged in the shell to hold washing water when washing clothes; a sealed door that can be opened and closed on the mouth of the inner tube; On the housing, for push-fit airtight door closure.

Further, the sealing door pushing device includes: a power component; a linkage component connected to the power output end of the power component; the power component drives the movement of the linkage component to act on the sealing door, and pushes the sealing door to close.

Further, the power component is a motor arranged in the housing, and the linkage component is a cam mechanism/cam linkage;

Alternatively, the power component is an oil pump arranged in the casing, and the linkage component is an oil cylinder;

Alternatively, the power component is an air pump arranged in the casing, and the linkage component is an air cylinder.

Further, an opening is opened on the housing corresponding to the mouth of the inner cylinder, and an openable door body is installed on the opening, and the pushing device is arranged on the door body or on the side of the housing close to the sealed door;

Preferably, an electromagnetic lock is provided on the door to detect whether the door is closed.

Further, the airtight door includes a rotating part rotatably connected to the inner cylinder and a pushing part provided on the opposite side of the rotating part, and the airtight door pushing device is arranged on the door body or the housing at a position corresponding to the pushing part.

Further, it includes an outer cylinder located in the casing, the inner cylinder is rotatably arranged in the outer cylinder, and a position detection device is arranged in the outer cylinder for detecting whether the airtight door is closed in place; the position detection device includes a Detection terminals and position sensors;

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

Further, a washing machine control method, the washing machine controls the sealing door pushing device to start pushing the sealing door to close.

Further, the control system of the washing machine judges whether the door body is closed, if it is judged to be yes, then control the sealing door pushing device to start, and push the sealing door to close; if it judges to be no, then control the sealing door pushing device to keep closed.

Further, after the washing machine detects that the door body is closed and locked, the position detection device detects whether the airtight door of the washing machine is closed, and if the detection is yes, then controls the airtight door pushing device to keep the closed state; if the detection is no, the control system of the washing machine Then the control airtight door pushing device is started, and the push-in airtight door is closed.

Further, after the washing machine detects that the door body is closed and locked, when the position detection device detects that the airtight door is not closed, it controls the action of the airtight door push-close device, and pushes the airtight door to close. After each action of the airtight door push-close device, the position detection The device detects that the airtight door is still not closed in place, then controls the airtight door push-close device to act again, and executes the cycle N times. When N is greater than N0 (N0 is the set value), the washing machine pauses and alarms;

Preferably, said N0=3.

After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

1. A washing machine disclosed in the present invention can automatically push and close the sealed door through the provided push-and-close device to prevent the problem that the sealed door is not closed due to user negligence, avoid the risk of falling off the high-speed rotating sealed door, and automate more high.

2. A washing machine disclosed by the present invention monitors whether the airtight door is closed properly through the position sensor provided on the outer tub, and if it is not closed in place, an alarm can be given to prompt the user to close the airtight door in time.

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 schematic diagram of the principle of a washing machine according to Embodiment 1 of the present invention;

Fig. 2 is a schematic diagram of the principle of the washing machine of Embodiment 2 of the present invention (implementation mode 1);

Fig. 3 is a schematic diagram of the principles of the washing machine in Embodiment 2 of the present invention (implementation mode 2);

Fig. 4 is a schematic diagram of the principle of the washing machine of Embodiment 2 of the present invention (implementation mode 3);

Fig. 5 is a schematic diagram of the principle of a washing machine according to Embodiment 3 of the present invention;

Fig. 6 is a partially enlarged view (pressure relief state) of Fig. 5 of the third washing machine according to the embodiment of the present invention;

Fig. 7 is a partially enlarged view (pressurized state) in Fig. 5 of the third washing machine of the embodiment of the present invention;

Fig. 8 is a schematic diagram of the principle of a washing machine according to Embodiment 4 of the present invention;

Fig. 9 is a partially enlarged view in Fig. 8 of the washing machine of Embodiment 4 of the present invention (the pressure relief state of Embodiment 1);

Fig. 10 is a partially enlarged view in Fig. 8 of the washing machine of Embodiment 4 of the present invention (pressurized state of Embodiment 1);

Fig. 11 is a partially enlarged view in Fig. 8 of the washing machine of Embodiment 4 of the present invention (the pressure relief state of Embodiment 2);

Fig. 12 is a partially enlarged view in Fig. 8 of the washing machine of Embodiment 4 of the present invention (pressurized state of Embodiment 2);

Fig. 13 is a schematic diagram of the principles of the washing machine according to Embodiment 5 of the present invention;

Figure 14 is the bottom view of the washing machine according to Embodiment 5 of the present invention;

Fig. 15 is a schematic three-dimensional structure diagram of a washing machine according to Embodiment 5 of the present invention;

Fig. 16 is a partially enlarged view in Fig. 15 of the washing machine according to Embodiment 5 of the present invention;

Fig. 17 is a schematic diagram of the principle of the washing machine according to Embodiment 6 of the present invention (implementation mode 1);

Fig. 18 is a schematic diagram of the principle of the washing machine in Example 6 of the present invention (implementation mode 2);

Fig. 19 is a block flow diagram of an implementation manner of a control method of a washing machine according to Embodiment 7 of the present invention;

Fig. 20 is a schematic diagram of the principle of a washing machine according to Embodiment 8 of the present invention;

Fig. 21 is a schematic structural diagram of a washing machine according to Embodiment 9 of the present invention;

Fig. 22 is a partially enlarged view in Fig. 21 of a washing machine according to Embodiment 9 of the present invention;

Fig. 23 is a flow chart of an implementation manner of the control method of the washing machine according to Embodiment 10 of the present invention;

In the figure: 1. Flow sensor; 2. Top panel; 3. Detergent box; 4. Main controller; 5. Door body; 6. Sealed door; 61 Rotating part; 8. Drainage pipeline; 9. Foot; 10. Ejector mechanism; 11. One-way valve plug; 12. Bearing; 13. Shaft; 14. Hollow channel; 15. First dynamic sealing structure; 16. Driving motor; 17. Inner cylinder; 18. Outer cylinder; 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. Boosting 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 Detected terminal; 39. Locking groove; 40. Locking lever; 41. Locking motor; 42. Rear wall of outer cylinder; 43. Lifting rib; device.

It should be noted that these drawings and text descriptions are not intended to limit the concept scope of the present invention in any way, but illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention , but not to limit the scope of the present invention.

In the description of the present invention, 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 present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

As shown in FIGS. 1-23 , the washing machine in the present invention may be a drum washing machine or a top-wheel washing machine. Preferably, various embodiments of the present invention are described using a drum washing machine as an example.

The invention provides a washing machine with a front-opening structure of a non-porous inner cylinder, which has a simple structure and can greatly reduce the washing water consumption of the washing machine without filling the washing/rinsing water between the inner cylinder and the outer cylinder. The possibility of dirt adhesion between the inner cylinder and the outer cylinder is avoided. It greatly improves user health and user experience, and greatly saves water resources.

The washing machine provided by the present invention has a casing 19, and the casing 19 includes: a top panel 2, a front panel, a back panel and a bottom panel. Footings 9 are installed and fixed on the bottom plate for supporting the whole drum washing machine. The casing 19 has an outer cylinder 18 inside, and an inner cylinder 17 is arranged coaxially inside the outer cylinder 18 . The main purpose of the outer cylinder 18 is to collect the drainage of the inner cylinder 17 and the drainage of the inner cylinder 17 for high-speed centrifugal dehydration. The inner tube 17 rotates, preferably a lifting rib 43 is provided to continuously lift, drop and beat the clothes, so that the clothes can be cleaned. The inner cylinder 17 is non-porous. The outer cylinder 18 has a center mounting hole, and the bearing 12 is installed and fixed. An inner cylinder shaft 13 fastened to an inner cylinder 17 passes through the bearing 12 shown and is connected to a drive 16 . An openable/closable airtight door 6 is installed on the mouth of the front part of the inner cylinder 17, so that the inner cylinder 17 is a sealed cabin structure.

An openable/closeable door body 5 is installed on the casing 19 of this embodiment.

Embodiment one

This embodiment mainly solves the problem of how to accurately determine the water intake of a non-porous inner drum washing machine. The specific solution is as follows:

A drum washing machine, comprising an inner cylinder 17 and a water inlet pipeline connected to the inner cylinder 17, the inner cylinder 17 is a non-porous inner cylinder, which holds washing water when washing clothes, and the water inlet pipeline is arranged for A flow sensor 1 that detects the flow of incoming water.

In this embodiment, a flow sensor 1 is installed on the water inlet pipeline to monitor the flow rate of water intake. When the set water intake volume is reached, the water intake valve 20 is closed to complete the water intake. 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.

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

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

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

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 installed at any position on the water inlet pipeline described in this embodiment, preferably at the rear of the water inlet valve 20, to accurately measure the water flow entering the sealed inner cylinder 17, and the flow sensor 1 is connected to the main controller 4 , the main controller 4 can collect the water intake of the inner cylinder 17 in real time, and close the water intake valve 20 when the set water intake is reached.

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

Specifically, the inner cylinder shaft 13 is connected to the drive motor 16, and 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 pipeline passes through The through hole of the rotor communicates with the hollow channel 14 of the inner cylinder shaft 13 .

Further, a first dynamic sealing structure 15 is provided between the water inlet pipeline and the through hole of the rotor, and a second sealing structure is provided 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 non-porous inner cylinder, the washing machine of this embodiment includes an outer cylinder 18, an inner cylinder drainage hole is provided on the side wall of the inner cylinder 17, and a normally closed check valve plug 11 is installed on the inner cylinder drainage hole. The ejector mechanism 10 for pushing the check valve plug 11 back to discharge water is installed on the outer cylinder 18 described above.

Preferably, the outer cylinder 18 is further provided with a locking mechanism for locking the rotation of the inner cylinder 17. After the locking mechanism locks the inner cylinder, the ejector mechanism 10 pushes the one-way valve plug 11 open to drain water.

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

This embodiment also provides a control method for the drum washing machine. The washing machine executes the washing/rinsing program. During the water intake process, the flow sensor detects the water intake flow value in real time, and the washing machine calculates the water intake volume according to the water intake flow value and the water intake time. , when the water intake reaches the set water intake of the washing machine, the water intake will stop.

The washing machine is provided with a plurality of water inlet flow values that can be selected by the user, and the washing machine enters water according to the water inlet flow value selected by the user.

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

Embodiment two

As shown in Figures 2-4, a drum washing machine in this embodiment includes an inner cylinder 17 and a water inlet pipeline. A water measuring device for measuring the water intake, the water inlet pipeline communicates with the water measuring device, and the water measuring device communicates with the inner cylinder.

The drum washing machine of this embodiment is provided with a water measuring device, and before entering the water into the inner tube 1, it enters the water measuring device for quantitative measurement, and determines the number of times the water measuring device measures water according to the set water level, thereby solving the problem of The non-porous inner drum washing machine ensures the washing effect according to the water inflow problem of the set water level, has a simple structure and is easy to operate.

Further, the water measuring device described 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 to the water inlet pipeline, and the water outlet is connected to the inner cylinder 17; A water outlet control device that controls 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 Figure 2, the water measuring tank 21 is arranged at the bottom of the inner tube 17, and the water measuring device includes a water level detection 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 water tank 21 reaches a set value to drain the water in the water measuring tank 21. Water is pumped into the inner cylinder 17.

As an implementation of this embodiment, as shown in Figure 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 detection device 22 for detecting the water measuring tank, so The water outlet control device described above is a water tank drain valve 25, and the water tank drain valve 25 is opened when the water level detection device 22 detects that the water level in the water measuring water tank 21 reaches a set value to discharge the water in the water measuring water tank 21 into the inner cylinder .

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

As an implementation of this embodiment, the water measuring water 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 water tank 21, and the water outlet control device is to keep the water outlet normally closed. When the water volume in the water tank reaches a certain value, the one-way valve of the water tank is opened under the water pressure and gravity, and the water in the water tank 21 is discharged into the inner cylinder 17, and the one-way valve of the water tank is reset to keep the water outlet closed .

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

Preferably, the washing machine includes a drain pipeline 8 , and the overflow pipeline communicates with the drain pipeline 8 .

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

This embodiment also provides a control method for the washing machine. The washing machine executes the washing/rinsing program, and the washing machine controls the washing water to enter the water measuring tank. All the water in the water tank is discharged into the inner cylinder, and the water intake is started again to enter the water measuring tank, and the cycle is repeated until the water level in the inner cylinder reaches the set value, and the water intake is terminated.

Further, the washing machine controls the washing water to enter into the water measuring tank. When the water volume in the measuring water tank reaches the set value, the water intake is stopped, and the heating device is controlled to operate to heat the washing water. When the water temperature detecting device detects that the water temperature in the measuring water tank reaches When setting the value, all the water in the water measuring tank is discharged into the inner cylinder.

Embodiment Three

This embodiment mainly solves the problem of how to ensure the unbalanced air pressure in the airtight compartment of the non-porous inner drum washing machine. Specifically, the sudden water cutoff of the solenoid valve, especially the water cutoff of the tap water pipe network, forms a negative pressure and backwashes the washing water in the airtight chamber. to the pipe network; or there is gas inside and it is difficult to enter the water.

As shown in Figures 5 to 7, a drum washing machine in this embodiment includes an inner cylinder 17, which is a non-porous inner cylinder for holding washing water when washing clothes, and also includes an inner cylinder 17 for connecting the inner cylinder 17 with the outside world. The environment is an air pressure balance mechanism to balance the air pressure inside the inner cylinder.

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

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

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

As an implementation of this embodiment, the air pressure balance mechanism includes a pressure equalization hole 27 arranged on the inner cylinder 17, and one end of the pressure equalization hole 27 communicating with the inside of the inner cylinder 17 is arranged on the inner cylinder 17 to rotate Central axis position and always higher than the highest water level position in the inner cylinder 17.

The washing machine of this embodiment includes a drive motor 16 and an inner cylinder shaft 13, the drive motor 16 drives the inner cylinder 17 to rotate through the transmission connection between the inner cylinder shaft 13 and the inner cylinder 17, and the pressure equalizing channel 27 is opened on the inner cylinder shaft 13 communicates with the interior of the inner cylinder 17 and the external environment, and the highest water level in the inner cylinder 17 is lower than the inner cylinder axis 13. This can prevent the water in the inner cylinder from flowing out from the pressure equalizing hole.

The washing machine of this embodiment includes an outer cylinder 18, the inner cylinder 17 is arranged inside the outer cylinder 18, the water discharged in the inner cylinder 17 is discharged through the outer cylinder 18, and the mouth of the inner cylinder 17 is installed with a sealing door for closing the inner cylinder 6. The mouth of the outer cylinder 18 is open, one end of the pressure equalizing hole 27 communicates with the interior of the inner cylinder 17 , and the other end is arranged inside the outer cylinder 18 and communicates with it. Like this, prevent extreme situation, this hole effluent also can be collected in the outer cylinder 18.

Further, the side wall of the inner cylinder 17 described in this embodiment is provided with an inner cylinder drain hole, and a normally closed check valve plug 11 is installed on the inner cylinder drain hole, and the outer cylinder 18 is installed on the outer cylinder 18 for turning the check valve The plug 11 pushes away the ejector rod mechanism 10 for draining.

Preferably, the outer cylinder 18 is further provided with a locking mechanism for locking the rotation of the inner cylinder. After the locking mechanism locks the inner cylinder, the ejector mechanism pushes the one-way valve plug to drain water.

Further, the washing machine in this embodiment includes a water inlet pipeline, the inner cylinder shaft 13 has a hollow passage 14 communicating with the inner cylinder 17, and the water inlet pipeline communicates with the hollow passage 14 of the inner cylinder shaft 13; The pressure equalizing hole 27 and the hollow passage 14 communicate with the interior of the inner cylinder 17 and are isolated from each other. Like this, can guarantee that the gas in the airtight chamber of inner cylinder can discharge smoothly and keep the air pressure balance inside inner cylinder, prevent water inflow from being discharged directly by pressure equalizing hole 27 simultaneously and leak.

Specifically, the hollow channel 27 extends from one end to the other end along the central axis of the inner cylinder shaft, and the pressure equalizing channel includes a first channel segment and a second channel segment, and the first channel segment is arranged parallel to the hollow channel , one end of which communicates with the interior of the inner cylinder, one end of the second channel section communicates with the first channel section, and the other end extends to the outer peripheral wall of the inner cylinder shaft to communicate with the interior of the outer cylinder.

Preferably, the second channel section is arranged perpendicularly to the first channel section to form an L-shaped pressure equalizing channel.

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

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

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

Embodiment Four

This embodiment mainly solves the problem of how to ensure the unbalanced air pressure in the airtight compartment of the non-porous inner drum washing machine. Specifically, the sudden water cutoff of the solenoid valve, especially the water cutoff of the tap water pipe network, forms a negative pressure and backwashes the washing water in the airtight chamber. to the pipe network; or there is gas inside and it is difficult to enter the water.

As shown in Figures 8 to 12, a drum washing machine in this embodiment includes an inner cylinder 17, which is a non-porous inner cylinder, which holds washing water when washing clothes, and also includes an inner cylinder for communicating with the external environment. A pressurization mechanism and/or a pressure relief mechanism to balance the air pressure inside the inner cylinder 17.

The pressurization mechanism described in this embodiment includes a pressurization channel 28 and a negative pressure safety valve 29. The negative pressure safety valve 29 is arranged on the pressurization channel 28, and is used for single-use when the internal pressure of the inner cylinder 17 is lower than the atmospheric pressure of the external environment. The guide guides the pressurized hole 28, and the external environment gas enters the interior of the inner cylinder 17 through the pressurized hole 28 to be pressurized until the internal air pressure of the inner cylinder 17 is balanced with the external environment air pressure, and the negative pressure safety valve 29 is closed.

The pressure relief mechanism described in this embodiment includes a pressure relief hole 30 and a positive pressure safety valve 31. The pressure relief hole 30 is set on the inner cylinder 17 near the central axis of rotation and is always higher than the highest point in the inner cylinder 17. Water level position, the positive pressure safety valve 31 is arranged on the pressure relief hole 30, and is used for the one-way conduction pressure relief hole 30 to perform pressure relief when the internal pressure of the inner cylinder 17 is greater than the atmospheric pressure of the external environment, until the internal pressure of the inner cylinder 17 is in line with the external environment. The ambient air pressure is balanced, 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 under pressure, once it exceeds the set value of the positive pressure safety valve, the positive pressure safety valve opens and can overflow through the pressure relief hole to ensure air pressure balance .

As shown in Figure 10, when the water is suddenly cut off, the gas in the airtight compartment of the inner cylinder 17 is under pressure, and once it is less than the set value of the positive pressure safety valve, the external atmosphere can quickly enter the airtight compartment, and the back suction is destroyed to ensure the air pressure balance. Avoid washing water being sucked into the water pipe network.

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

The washing machine of this embodiment includes a drive motor 16 and an inner tube shaft 13, the drive motor 16 drives the inner tube 17 to rotate through the transmission connection between the inner tube shaft 13 and the inner tube 17, and the described booster channel 28 and/or pressure relief The channel 30 is opened on the inner cylinder shaft 13 to communicate the interior of the inner cylinder 17 with the external environment, and the highest water level in the inner cylinder 17 is lower than the inner cylinder shaft 13 .

The washing machine of this embodiment includes an outer cylinder 18, the inner cylinder 17 is arranged inside the outer cylinder 18, the water discharged in the inner cylinder 17 is discharged through the outer cylinder 18, and the mouth of the inner cylinder 17 is installed with a sealing door 6 for closing the inner cylinder. , the mouth of the outer cylinder 18 is open, one end of the pressurization hole 28 and/or pressure relief hole 30 communicates with the interior of the inner cylinder 17 , and the other end is arranged inside the outer cylinder 18 and communicates with it.

The drum washing machine of this embodiment includes a water inlet pipeline, the inner cylinder shaft 13 has a hollow channel 14 communicating with the inside of the inner cylinder 17, and the water inlet pipeline communicates with the hollow channel 14 of the inner cylinder shaft 13; The above-mentioned pressure relief hole 30 and the hollow channel 14 communicate with the interior of the inner cylinder 17 and are isolated from each other.

As shown in Figures 9 and 10, the hollow channel 14 extends from one end to the other end along the central axis of the inner cylinder shaft 13, and the pressure relief channel 30 includes a first channel section and a second channel section, the first The tunnel section is arranged parallel to the hollow channel, one end of which communicates with the interior of the inner cylinder, one end of the second tunnel section communicates with the first tunnel section, and the other end extends to the outer peripheral wall of the shaft of the inner cylinder to communicate with the interior of the outer cylinder;

Preferably, the second tunnel section is arranged perpendicularly to the first tunnel section to form an L-shaped pressure relief tunnel.

The washing machine of this embodiment includes a water inlet pipeline. The inner cylinder shaft 13 has a hollow passage 14 communicating with the inside of the inner cylinder 17, and the water inlet pipeline communicates with the hollow passage 14 of the inner cylinder shaft 13; The booster hole 28 communicates with the hollow channel 14 .

Further, the hollow passage 14 extends from one end to the other end along the central axis of the inner cylinder shaft 13 , one end of the pressurized hole 28 communicates with the hollow passage 14 , and the other end extends to the outer circumference of the inner cylinder shaft 13 The wall communicates with the inside of the outer cylinder 18 .

Preferably, the pressurization hole 28 and the hollow channel 14 are arranged perpendicular to each other.

The inner cylinder shaft described in this embodiment is connected to the driving motor, the driving motor includes a stator and a rotor, and the rotor is fixedly connected to the inner cylinder shaft; a through hole is set at the center of the rotor, and the water inlet pipeline passes through the through hole of the rotor It communicates with the hollow channel of the inner cylinder shaft.

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

As shown in Figure 11 and Figure 12, the pressurization channel 28 and the pressure relief channel 30 are all arranged on the inner cylinder shaft 13, and the openings for communicating with the atmosphere are all inside the outer cylinder 18; the openings for the sealed cabin of the Unicom inner cylinder 17 are all in the inner cylinder The inner side of the water inlet channel 14 of the shaft 13.

It is conceivable that the preferred pressurization channels 28 and pressure relief channels 30 are all arranged on the inner cylinder shaft 13, and the openings communicating with the atmosphere are all inside the outer cylinder 18;

Embodiment five

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

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, and the position detection device includes a position sensor 33 and 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 cylinder 18, the position sensor 33 is arranged on the side of the outer cylinder 18 close to the drive motor 16, and the position sensor 33 is arranged correspondingly to the detected terminal 38 at intervals.

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

The washing machine in this embodiment includes a locking mechanism 35 for locking the rotation of the inner cylinder, and the position detection device is used for detecting whether the inner cylinder 17 is locked in place after the locking mechanism 35 locks it, and/or, When the position detection device detects that the inner cylinder 17 has rotated to a set position, the locking mechanism 35 closes the inner cylinder 17 .

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

In the washing machine of this embodiment, an inner cylinder drain hole is provided on the side wall of the inner cylinder 17, a normally closed check valve plug 11 is installed on the inner cylinder drain hole, and a check valve plug 11 is installed on the outer cylinder to Push open the ejector mechanism 10 for draining; after the locking mechanism 35 locks the inner cylinder 17, the ejector mechanism 10 pushes the one-way valve plug 11 for draining.

Further, the ejector rod mechanism is installed on the outer cylinder, and the ejector rod mechanism includes a telescopically movable ejector rod and a ejector rod motor that drives the telescopic movement of the ejector rod, and the ejector rod passes through the wall of the outer cylinder and is inserted into the inner cylinder. Open the one-way valve plug in the drain hole to drain water.

The drum washing machine in this embodiment includes a main controller, and the position detection sensor, locking motor and ejector motor are all electrically connected to the main controller.

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

The drum washing machine in this embodiment has a position sensor 33, which is arranged on the outer cylinder 18 and the drive motor 16, specifically on the rear of the outer cylinder 18 and on 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, and converts it into a signal, which is fed back to the main controller 4 of the washing machine through the line 43 .

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

The drum washing machine of this embodiment has a mounting bracket 32, after the fixed knot 34 is fixed on the outer cylinder, a locking motor, a locking lever and a position sensor are installed on the mounting bracket 32; the rotor skeleton of the driving motor has a locking groove and a detected terminal 38.

Embodiment six

As shown in Figures 17-18, a drum washing machine of this embodiment includes an inner cylinder 17 and an outer cylinder 18, the inner cylinder 17 is a non-porous inner cylinder, and holds washing water when washing clothes, and the outer cylinder 18 is coaxially arranged The outside of the inner cylinder 17 is used to collect the water discharged from the inner cylinder 17 and discharge it through the drainage pipeline, and also includes a position detection device arranged on the outer cylinder 18 for detecting the position of the inner cylinder.

Further, 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, the position sensor 33 is arranged on the inner wall of the outer cylinder 18 and is connected with the detected terminal 38 on the inner cylinder 17. The detection terminal 38 is set correspondingly.

Preferably, the detected terminal 38 is arranged on the side wall of the inner cylinder 17, the position sensor 33 is arranged on the inner side wall of the outer cylinder 18, and the circumference of the inner cylinder 17 where the detected terminal 38 is located is the same as The circumference of the outer cylinder 18 where the position sensor 33 is located is concentrically arranged.

Preferably, the position sensor 33 is disposed on the inner sidewall of the upper part of the outer cylinder 18 .

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

The washing machine in this embodiment includes a locking mechanism 35 for locking the rotation of the inner cylinder, and the position detection device is used for detecting whether the inner cylinder 17 is locked in place after the locking mechanism 35 locks it, and/or, When the position detection device detects that the inner cylinder 17 has rotated to the set position, the locking mechanism 35 closes the inner cylinder.

Further, the locking mechanism 35 is installed on the outer cylinder 18. The locking mechanism 35 includes a locking lever for telescopic movement and a locking motor for driving the telescopic movement of the locking lever. The corresponding locking lever is set on the inner cylinder 17. The locking groove 39 matched with it, when the locking rod protrudes and inserts into the locking groove 39 driven by the locking motor, the inner cylinder 17 is locked.

As shown in FIG. 8 , 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. Further, the detected terminal 38 may be installed in the lifting rib 43 .

As an implementation of this embodiment, an inner cylinder drainage hole is provided on the side wall of the inner cylinder 17, and a normally closed check valve plug 11 is installed on the inner cylinder drainage hole, and the outer cylinder 18 is installed for The ejector mechanism 10 that pushes away the one-way valve plug 11 to drain water; after the locking mechanism 35 locks the inner cylinder 17, the ejector rod mechanism 10 pushes back the one-way valve plug 11 to drain water.

Further, the ejector rod mechanism 10 is installed on the outer cylinder 18, the ejector rod mechanism 10 includes a telescopically movable ejector rod and a ejector rod motor that drives the telescopic movement of the ejector rod, and the ejector rod is inserted through the wall of the outer cylinder In the drainage hole of the inner cylinder, the one-way valve plug is pushed back to drain water.

The drum washing machine in this embodiment includes a main controller 4, and the position detection sensor, locking motor and ejector motor are all electrically connected to the main controller.

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

Embodiment seven

A control method for a drum washing machine. The washing machine includes an inner tub, a position detection device for detecting the position of the inner tub, and a locking mechanism for locking the rotation of the inner tub. water, the control methods include:

When the position detection device detects that the inner cylinder has rotated to the set position, it controls the locking mechanism to close the inner cylinder, and/or, after the locking mechanism locks the inner cylinder, the position detection device detects whether it is locked in place.

As shown in Figure 19, the washing machine includes a drive motor that drives the inner drum to rotate. During the washing or rinsing process, the washing machine controls the drive motor to decelerate and execute the inner drum stop rotation program. When the inner drum speed drops below the set safe speed, if the position When the detection device detects that the inner cylinder rotates to the set position, it controls the driving motor to stop rotating and keeps the inner cylinder in a fixed position, and controls the locking mechanism to close the inner cylinder for drainage.

The washing machine includes a drive motor that drives the inner drum to rotate. During the washing or rinsing program, the washing machine controls the drive motor to decelerate and execute the inner drum stop rotation program. When the inner drum speed drops below the set safe speed, the locking mechanism is controlled to close the inner drum. , if the position detection device detects that the inner cylinder has rotated to the set position, the water will be drained, otherwise the water will not be started.

The side wall of the inner cylinder described in this embodiment is provided with an inner cylinder drainage hole, a normally closed one-way valve plug is installed on the inner cylinder drainage hole, and a valve for pushing the one-way valve plug to drain is installed on the outer cylinder. Ejector mechanism; the drainage program includes: after the locking mechanism locks the inner cylinder, control the ejector mechanism to push the one-way valve plug to drain water.

The washing machine in this embodiment includes a drive motor that drives the inner drum to rotate. During the dehydration program, the washing machine controls the drive motor to decelerate and execute the inner drum stop rotation program. When the inner drum speed drops below the set safe speed, if the position detection device detects When the cylinder rotates to the set position, the drive motor is controlled to stop rotating and the inner cylinder is kept at a fixed position, the locking mechanism is controlled to close the inner cylinder, the dehydration program ends, and the door lock is released.

The washing machine in this embodiment includes a drive motor that drives the inner drum to rotate. During the dehydration program, the washing machine controls the drive motor to decelerate and executes the inner drum stop rotation program. Closed, the dehydration program is over, the door lock is released, and if the position detection device does not detect that the inner cylinder has rotated to the set position, an alarm will be issued.

The washing machine in this embodiment includes a drive motor and an inner cylinder shaft. The drive motor includes a stator and a rotor. The rotor is fixedly connected to the inner cylinder shaft to drive the inner cylinder to rotate. The position detection device includes a position sensor and a detected terminal. The terminals are arranged on the rotor, and the position sensor is fixed at a position corresponding to the detected terminals;

When the rotor rotates to the position where the detected end is relative to the position sensor, the inner cylinder rotates to the set position, and/or, after the locking mechanism locks the inner cylinder, when the rotor rotates to the position where the detected end is relative to the position sensor, then The inner cylinder locks into place.

The locking mechanism described in this embodiment is installed on the side wall of the outer cylinder close to the driving motor. The locking mechanism includes a locking rod for telescopic movement and a locking motor for driving the telescopic movement of the locking rod. A corresponding locking groove is provided for the locking rod, and when the locking rod is driven by the locking motor and inserted into the locking groove, the inner cylinder is locked.

The washing machine of this embodiment includes an outer cylinder, which is coaxially arranged outside the inner cylinder, and is used to collect the water discharged from the inner cylinder and discharge it through the drainage pipeline. The position detection device includes a position sensor and a detected terminal , the detected terminal is arranged on the inner cylinder, and the position sensor is arranged on the inner wall of the outer cylinder and corresponding to the detected terminal on the inner cylinder;

When the rotor rotates to the position where the detected end is relative to the position sensor, the inner cylinder rotates to the set position, and/or, after the locking mechanism locks the inner cylinder, when the rotor rotates to the position where the detected end is relative to the position sensor, then The inner cylinder locks into place.

The locking mechanism described in this embodiment is installed on the outer cylinder. The locking mechanism includes a locking rod for telescopic movement and a locking motor for driving the telescopic movement of the locking rod. The locking groove, when the locking rod stretches out and is inserted into the locking groove driven by the locking motor, the inner cylinder is locked.

Embodiment Eight

This embodiment mainly solves the problem of how to automatically push and close the sealing door provided at the mouth of the inner cylinder. The specific scheme is as follows:

As shown in Figure 20, the drum washing machine provided by this embodiment includes: a housing 19; an inner cylinder 17, which is arranged in the housing 19, and holds washing water when washing clothes; a sealed door 6, which can be opened and closed and installed inside On the barrel mouth of the cylinder 17; also includes: a sealing door pushing device 46, which is arranged on the housing 19, and is used for pushing and closing the sealing door 6.

In this embodiment, through the sealing door pushing device 46 provided on the housing 19, the sealing door 6 can be automatically pushed and closed without manual closing, and the automation is higher, which can effectively prevent the sealing door 6 from being closed due to user negligence. The problem of avoiding the risk of the high-speed rotary airtight door 6 coming off.

Further, the sealing door pushing device 46 includes: a power component; a linkage component connected to the power output end of the power component; the power component drives the movement of the linkage component to act on the sealing door 6, and pushes the sealing door 6 to close .

Further, an opening is opened on the housing 19 corresponding to the mouth of the inner cylinder 17, and an openable door body 5 is installed on the opening, and the sealing door pushing device 46 is arranged on the door body 5 or the housing 19 is close to One side of the sealed door 6, more preferably, the door body 5 is provided with an electromagnetic lock for detecting whether the door body 5 is closed.

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, and the door body 5 Drive the mechanical linkage mechanism to act on the airtight door 6, close the airtight door 6, and close the airtight door while closing the door body 5 to save time and effort. The mechanical linkage mechanism can be a link mechanism or a linkage folding mechanism.

More preferably, the airtight door pushing device 46 is an electric pushing mechanism, specifically, the power component is a motor arranged in the housing, and the linkage component is a cam mechanism connected to the power output end of the motor or The cam linkage mechanism, the drum washing machine in this embodiment also includes a main controller 4, through which the main controller 4 is electrically connected to the electric push-fit device to realize the motorization of the push-fit device 46 .

As an alternative to the above solution, the power component is an oil pump arranged on the casing 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 casing , the linkage component is an air cylinder connected to the power output end of the air pump.

In this embodiment, the airtight door 6 includes a rotating part 61 connected to the inner cylinder 17 through a hinge, and a pushing part 62 provided on the opposite side of the rotating part 61, and the sealing door pushing device 46 corresponds to the pushing part 62 The position is set on the door body 5 or the housing 19. According to the principle of leverage, the airtight door pushing device 46 is correspondingly arranged on the opposite side away from the rotating part 61, which is more labor-saving and easier to close the airtight door 6.

In this embodiment, the airtight door push-close device 46 adopts an electric push-close device, which not only can be automatically pushed and closed, but also can realize the airtight door push-close device 46 by electrically connecting the main controller 4 with a motor or an oil pump or an air pump through a circuit. Electric control, more automatic and intelligent.

In this embodiment, the described airtight door pushing device 46 is not limited to the electric pushing device, other mechanical pushing devices etc. all belong to the protection scope of this embodiment, and are not limited to contact pushing, other Non-contact promotion, such as electromagnetic non-contact promotion, etc., all belong to the protection scope of this embodiment.

Embodiment nine

During the use of the drum washing machine, there may be a situation where the airtight door is not fully closed. Compared with the eighth embodiment, this embodiment solves the problem of how to detect whether the airtight door is closed in place. The specific solution is as follows:

As shown in Figures 21 and 22, the drum washing machine provided in this embodiment includes an outer cylinder 18 located in a casing 19, and the inner cylinder 17 is rotatably arranged in the outer cylinder 18. Compared with the eighth embodiment, the outer A position detection device is arranged in the cylinder 18 for detecting whether the airtight door 6 is closed in place.

A drum washing machine in this embodiment includes an inner cylinder 17 and a sealing door 6, the inner cylinder 17 has an inner cylinder opening, and the sealing door 6 is installed on the inner cylinder opening of the inner cylinder which can be opened and closed, and also includes a position detection device for detecting Whether the sealed door body is closed in place, to avoid unclosed situations, causing water leakage during washing or rinsing and dehydration, or to prevent problems such as damage caused by the door body not being closed in place due to user negligence and high-speed rotation.

The position detection device comprises a position sensor 33 and a detected terminal 38, wherein the detected terminal 38 is arranged on the airtight door 6, the position sensor 33 is arranged at a position corresponding to the detected terminal 38, the position sensor 33 is fixed, and is detected. During the opening/closing process of the airtight door 6, the detection terminal 38 rotates with the airtight door 6, the position between the two changes with the rotation of the airtight door 6, and the generated signal value changes, and the washing machine judges according to the received signal value Whether the airtight door 6 is closed in place.

A closing structure for fastening with the inner cylinder 17 is arranged on the airtight door 6 , and the detected terminal 38 is arranged on the closing structure.

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

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

The position detection device is an electromagnetic position sensor, comprising a permanent magnet rotor and an electromagnetic sensor, the permanent magnet rotor being the detected terminal 38, and the electromagnetic sensor being a position sensor 33; or a photoelectric position sensor comprising a light shield and a photoelectric sensor, and the light shield For 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 a detected terminal 38, and the differential voltage sensor is a position sensor 33; An eddy current sensor includes a metal plate and an eddy current sensor, the metal plate is a detected terminal 38, and the eddy current sensor is a position sensor 33; or a capacitive sensor includes a moving pole, a fixed pole and a capacitance sensor, and the moving pole Extremely detected terminal 38, the fixed pole and capacitance sensor are position sensor 33; or dry reed switch type sensor, comprise magnet and dry reed switch sensor, described magnet is detected terminal 38, and described dry reed switch sensor is position sensor The 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 .

In this embodiment, a main controller 4 is also included, and the main controller 4 is electrically connected to the position sensor 33 .

More preferably, the housing 19 is provided with an audible alarm connected to the position sensor 33 , and when the position sensor 33 detects that the airtight door 6 is not fully closed, it will alarm in time to remind the user of failure or close the airtight door 6 .

Embodiment ten

As shown in Figure 23, a kind of control method of washing machine, washing machine comprises: casing 19; When washing clothes, hold the inner tube 17 of washing water; Can open and close the sealing door 6 that is installed on the mouth of inner tube 17, and A sealing door pushing device 46 for closing the sealing door 6 is provided in the casing 19 , and the control method includes: the washing machine controls the sealing door pushing device 46 to start pushing the sealing door 6 to close.

In this embodiment, an opening is provided on the shell 19 of the washing machine corresponding to the mouth of the inner cylinder 17, and an openable door body 5 is installed on the opening. The control system of the washing machine judges whether the door body 5 is closed, and if it is judged to be yes, then Control the airtight door pushing device 46 to start, and push the airtight door 6 to close; if judged as no, then control the airtight door pushing device 46 to keep closing.

In one solution, a control program that can control the start of the airtight door push-and-close device 46 can be set in the control system of the washing machine, and the user can start the air-tight door push-and-close device 46 at any time through the control program as required, and can press buttons/keys or Other modes select to start the airtight door pushing device 46 .

In this embodiment, the door body 5 of the washing machine is provided with an electromagnetic lock, which is used to detect whether the door body 5 of the washing machine is closed. If the detection is yes, the control system of the washing machine controls the sealing door pushing device 46 to start, and pushes the sealing door 6 close; if the detection is no, then the control airtight door pushing device 46 remains closed and does not start.

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

The main controller 4 of the washing machine judges whether the sealing door 6 is closed in place according to the signal detected by the position detection device, so as to avoid the unclosed situation, causing water leakage during washing or rinsing and dehydration, or preventing the sealing door 6 from failing due to user negligence. Closed in place high-speed rotation causing damage and other issues.

After the washing machine detects that the door body 5 is closed and locked, the position detection device detects whether the airtight door 6 of the washing machine is closed, and if it is detected as yes, then the control airtight door pushing device 46 remains closed; if it is detected as no, the control of the washing machine The system controls the sealing door pushing device 46 to start, and the pushing sealing 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 airtight door 6 is not closed, it controls the action of the airtight door pushing device 46, and pushes the airtight door 6 to close. After each action of the airtight door pushing device 46, The position detection device detects that the airtight door 6 has not yet been closed in place, and then controls the airtight door pushing device 46 to act again, and the cycle is performed N times. When N is greater than N0 (N0 is a set value), the washing machine pauses and gives an alarm;

Preferably, said N0=3.

The position detection device detects that the specific detection method is that the signal value generated between the detected terminal 38 and the position sensor 33 is input into the main controller 4 of the washing machine when the airtight door 6 is closed in place, as a criterion for judging whether the airtight door 6 is closed in place. Reference signal value.

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 was equal to the reference signal value, the main controller 4 of the washing machine judged that the airtight door 6 was closed in place, and the washing machine was controlled to wash; When there is a difference between the signal value generated between the detected terminal 38 and the position sensor 33 and the reference signal value received by the main controller 4 of the washing machine, the main controller 4 of the washing machine determines that the airtight door 6 is far away from the closed position, and controls the washing machine to send an alarm. Signal reminds the user to close the airtight door 6, avoiding the unclosed situation, causing water leakage during washing or rinsing and dehydration, or preventing problems such as damage caused by the door not being closed in place due to user negligence.

The above descriptions are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the technology of this patent Without departing from the scope of the technical solution of the present invention, personnel can use the technical content of the above prompts to make some changes or modify them into equivalent embodiments with equivalent changes. In essence, any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the solutions of the present invention.

Claims (10)

1. A washing machine, comprising: case; The inner cylinder is arranged in the casing, and holds washing water when washing clothes; The airtight door can be opened and closed on the mouth of the inner cylinder; It is characterized in that it also includes: The sealing door pushing device is arranged on the shell and is used for pushing and closing the sealing door; The described airtight door push and close device includes: Power components; The linkage component is connected to the power output end of the power component; The power part drives the movement of the linkage part to act on the airtight door, and pushes the airtight door to close; An opening is opened on the housing corresponding to the mouth of the inner cylinder, and an openable door body is installed on the opening, and the sealing door pushing device is arranged on the door body or on the side of the housing close to the sealing door; The washing machine also includes a booster mechanism and a pressure relief mechanism, which are used to communicate the inner cylinder with the external environment to balance the air pressure inside the inner cylinder; The booster mechanism includes a booster channel and a negative pressure safety valve, and the negative pressure safety valve is arranged on the booster channel, and is used for one-way leading the booster channel to perform boosting when the internal pressure of the inner cylinder is lower than the atmospheric pressure of the external environment. ; The pressure relief mechanism includes a pressure relief hole and a positive pressure safety valve. The pressure relief hole is placed on the inner cylinder close to the central axis of rotation and is always higher than the highest water level in the inner cylinder. The positive pressure The safety valve is set on the pressure relief hole, which is used for pressure relief through the one-way pressure relief hole when the internal pressure of the inner cylinder is greater than the atmospheric pressure of the external environment; The washing machine also includes a drive motor and an inner tube shaft, the drive motor drives the inner tube to rotate through the transmission connection between the inner tube shaft and the inner tube, and the pressurization channel and the pressure relief channel are provided on the inner tube shaft to communicate with the inside of the inner tube with the external environment; The washing machine also includes an outer cylinder, and the inner cylinder is arranged inside the outer cylinder; the inner cylinder shaft has a hollow passage communicating with the interior of the inner cylinder, and the pressure relief hole and the hollow passage communicate with the interior of the inner cylinder and communicate with each other. Separate arrangement; the hollow channel extends from one end to the other end along the central axis of the inner cylinder shaft, the pressure relief channel includes a first channel segment and a second channel segment, the first channel segment is arranged parallel to the hollow channel, and One end communicates with the interior of the inner cylinder, one end of the second tunnel section communicates with the first tunnel section, and the other end extends to the outer peripheral wall of the inner cylinder shaft to communicate with the interior of the outer cylinder; The washing machine controls the sealing door push device to start pushing the sealing door to close; The control system of the washing machine judges whether the door body is locked, and if it is judged to be yes, then the control airtight door pushing device is started, and the pushing airtight door is closed; 2. The washing machine according to claim 1, characterized in that, the power component is a motor arranged in the housing, The linkage component is a cam mechanism/cam linkage mechanism. 3 . The washing machine according to claim 1 , wherein the power component is an oil pump disposed in the casing, and the linkage component is an oil cylinder. 4 . 4. The washing machine according to claim 1, characterized in that, the power component is an air pump disposed in the casing, and the linkage component is an air cylinder. 5. The washing machine according to claim 1, wherein the airtight door comprises a rotating part rotatably connected to the inner cylinder and a pushing part provided on the opposite side of the rotating part, and the pushing device of the airtight door is correspondingly pushed The position of the part is set on the door body or the casing. 6. The washing machine according to claim 1, characterized in that it comprises an outer cylinder located in the casing, the inner cylinder is rotatably arranged in the outer cylinder, and a position detection device is arranged in the outer cylinder for detecting the seal Whether the door is fully closed; the position detection device includes a detected terminal and a position sensor. 7. The washing machine according to claim 6, wherein the position sensor is a reed switch sensor, or a Hall sensor, or a photoelectric sensor, or a differential voltage sensor, or an eddy current sensor, or capacitive sensor. 8. A control method for a washing machine according to any one of claims 1-7, characterized in that, after the washing machine detects that the door body is closed and locked, the position detection device detects whether the airtight door of the washing machine is closed, and if the detection is yes, Then control the sealing door pushing device to keep the closed state; if the detection is negative, the control system of the washing machine controls the sealing door pushing device to start, and the pushing sealing door is closed. 9. The control method of the washing machine according to claim 8, characterized in that, after the washing machine detects that the door body is closed and locked, when the position detection device detects that the airtight door is not closed, it controls the action of the airtight door push-close device to push and seal When the door is closed and the airtight door push-and-close device moves each time, the position detection device detects that the airtight door has not been closed in place, then the airtight door push-to-close device is controlled to act again, and the cycle is executed N times. When N is greater than N0 (N0 is the set value ), the washing machine pauses and alarms. 10. The control method of the washing machine according to claim 9, characterized in that said N0=3.

Images