CN111663296A - A washing machine and its control method - Google Patents

Abstract

The invention discloses a washing machine, comprising: an inner cylinder having an inner cylinder opening; the inner cylinder door is arranged on the inner cylinder opening of the inner cylinder in an opening and closing way; it is characterized by also comprising: the invention also discloses a control method of the washing machine, wherein a control unit of the washing machine judges whether the inner cylinder door is closed in place according to a signal detected by the position detection device. The position detection device is arranged on the inner cylinder door, so that whether the inner cylinder door is closed in place or not can be accurately judged, errors caused by artificial subjective judgment are avoided, water leakage caused by unlocking in washing or rinsing and dewatering conditions is avoided, or the problems that the door body is unlocked in place and rotates at a high speed to cause damage and the like due to user negligence are avoided.

Description

A washing machine and its control method

technical field

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

Background technique

As one of the most widely used household appliances in people's daily life, washing machines help people get rid of the trouble of laundry and bring great convenience to people. However, the washing machine also has certain shortcomings, such as time-consuming and large water consumption. In order to improve the water-saving function of the washing machine, the non-porous inner cylinder structure is adopted, but the biggest problem of the non-porous inner cylinder structure is the sealing and closing of the inner cylinder door. It can cause water leakage during washing or rinsing and dehydration, or prevent the door from being locked in place due to the negligence of the user, resulting in damage caused by high-speed rotation of the door.

The present invention has been made in view of this.

SUMMARY 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 order to solve the above-mentioned technical problems, the basic conception of the technical scheme adopted in the present invention is:

A washing machine comprising:

Inner cylinder, with inner cylinder mouth;

The inner cylinder door, which can be opened and closed, is installed on the inner cylinder mouth of the inner cylinder;

It is characterized in that it also includes:

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

Further, the position detection device includes a position sensor and a detected terminal, the detected terminal is provided on the inner cylinder door, and the position sensor is provided at a position corresponding to the detected terminal.

Further, the inner cylinder door is provided with a locking structure for engaging with the inner cylinder, and the detected terminal is provided on the locking structure.

Further, it includes an outer cylinder sleeved on the outside of the inner cylinder and coaxial with the inner cylinder, and the position sensor is arranged on the outer cylinder and corresponds to the position of the detected terminal;

Preferably, the position sensor is arranged on the outer wall of the outer cylinder and corresponds to the position of the detected terminal.

Further, it includes a housing, the inner cylinder is arranged in the housing, and the position sensor is arranged on the housing, corresponding to the position of the detected terminal.

Further, the position detection device is an electromagnetic position sensor, including a permanent magnet rotor and an electromagnetic sensor, the permanent magnet rotor is a detected terminal, and the electromagnetic sensor is a position sensor; or a photoelectric position sensor, including a shading plate and a photoelectric sensor, the shading plate is a detected terminal, the photoelectric sensor is a position sensor; or a differential voltage sensor, including an armature and a differential voltage sensor, the armature is the detected terminal, and the differential voltage sensor is a position sensor; or an eddy current sensor, Including a metal plate and an eddy current sensor, the metal plate is the detected terminal, the eddy current sensor is a position sensor; or a capacitive sensor, including a moving pole, a fixed pole and a capacitance sensor, the moving pole is the detected terminal, so The pole-fixing and capacitive sensor is a position sensor; or a reed switch sensor, including a magnet and a reed switch sensor, the magnet is the detected terminal, and the reed switch sensor is a position sensor; or a Hall-type sensor, including A permanent magnet and a hall sensor, the permanent magnet is a detected terminal, and the hall sensor is a position sensor.

Further, a control unit is included, and the control unit is electrically connected with the position sensor.

Further, it includes a door body pushing and closing device, the door body pushing and closing device is arranged on the side of the casing or the machine door of the washing machine close to the inner cylinder door, and is used for pushing and closing the inner cylinder door to close, the door body pushing and closing device Electrical connection with the control unit.

A control method for a washing machine, characterized in that a control unit of the washing machine judges whether the inner tub door is closed properly according to a signal detected by a position detection device.

Further, 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 control unit of the washing machine as a reference signal value for judging whether the inner drum door is closed in place; when the control unit of the washing machine receives When the signal value generated between the detected terminal and the position sensor is equal to the reference signal value, the control unit of the washing machine determines that the inner tub door is closed in place; when the control unit of the washing machine receives the signal value generated between the detected terminal and the position sensor When there is a difference from the reference signal value, the control unit of the washing machine determines that the inner tub door is not closed properly.

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

1) A position detection device is set on the inner cylinder door, which can accurately judge whether the inner cylinder door is closed in place, avoid errors in human subjective judgment, avoid unlocking, and cause water leakage during washing, rinsing and dehydration, or prevent the occurrence of Due to the negligence of the user, the door body is not locked in place and rotates at high speed, causing damage and other problems.

2) The main controller of the auxiliary washing machine judges the rotation state of the inner drum and locks the motor.

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Description of drawings

The accompanying drawings, as a part of the present invention, are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings in the following description are only some embodiments, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort. In the attached image:

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

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

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

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

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

6 is a partial enlarged view (pressure relief state) in FIG. 5 of a three-drum washing machine according to an embodiment of the present invention;

7 is a partial enlarged view (pressurized state) in FIG. 5 of a three-drum washing machine according to an embodiment of the present invention;

8 is a schematic diagram of the principle of a four-drum washing machine according to an embodiment of the present invention;

Fig. 9 is a partial enlarged view in Fig. 8 of the fourth drum washing machine according to the embodiment of the present invention (pressure relief state of the first embodiment);

Fig. 10 is a partial enlarged view in Fig. 8 of the fourth drum washing machine according to the embodiment of the present invention (pressurized state of the first embodiment);

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

Fig. 12 is a partial enlarged view in Fig. 8 of a four-drum washing machine according to an embodiment of the present invention (pressurized state of the second embodiment);

Fig. 13 is a schematic diagram of the principle of the fifth drum washing machine of the present invention;

Figure 14 is a bottom view of the fifth drum washing machine of the present invention;

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

Fig. 16 is a partial enlarged view of Fig. 15 of the fifth drum washing machine of the present invention;

Fig. 17 is a schematic diagram of the principle of the drum washing machine according to the sixth embodiment of the present invention (the first embodiment);

FIG. 18 is a schematic diagram of the principle of the drum washing machine according to the sixth embodiment of the present invention (Embodiment 2);

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

Figure 20 is a schematic structural diagram of the eighth drum washing machine according to the embodiment of the present invention;

Fig. 21 is a partial enlarged view in Fig. 20 of the eighth drum washing machine of the embodiment of the present invention;

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

FIG. 23 is a control method for a washing machine in Embodiment 10 of the present invention.

In the figure: 1. Flow sensor; 2. Upper panel; 3. Detergent box; 4. Main controller; 5. Machine door; 6. Inner cylinder door; 61. Rotating part; 62. Push-fit part; ;8. Drainage pipeline; 9. Foot; 10. Ejector mechanism; 11. One-way valve plug; 12. Bearing; 13. Shaft; 14. Hollow channel; 15. First dynamic seal structure; 16. Drive motor ; 17, inner cylinder; 18, outer cylinder; 19, shell; 20, water inlet valve; 21, water 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 port; 28, pressurizing port; 29, negative pressure safety valve; 30, pressure relief port; 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 rod; 41, locking motor; 42, rear wall of outer cylinder; 43, lifting rib; 44, door pusher combination device.

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

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention , but are not intended 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 accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection or electrical connection; 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 terms in the present invention can be understood in specific situations.

As shown in FIG. 1-FIG. 18, this embodiment provides a front-loading drum washing machine with a non-porous inner drum, which has a simple structure and can greatly reduce the need to fill washing/rinsing water between the inner drum and the outer drum. water consumption in the washing machine. Avoid the possibility of dirt adhesion between the inner cylinder and the outer cylinder. It greatly improves user health and user experience, and greatly saves water resources.

The front-loading washing machine of this embodiment has a casing 19, and the casing 19 includes: a top panel 2, a front panel, a back panel and a bottom panel. Bottom feet 9 are installed and fixed on the bottom plate for supporting the entire washing machine. The outer casing 19 has an outer cylinder 18 inside, and an inner cylinder 17 is provided coaxially inside the outer cylinder 18 . The main purpose of the outer cylinder 18 is to collect the drainage from the inner cylinder 17 and the drainage from the high-speed centrifugal dehydration of the inner cylinder 17 . The inner cylinder 17 rotates, and preferably a lifting rib 43 is provided to continuously lift and drop the clothes, so as to wash the clothes. The inner cylinder 17 is of a non-porous structure. The outer cylinder 18 has a central mounting hole, and the bearing 12 is mounted and fixed. The inner cylinder shaft 13 , which is fastened to the inner cylinder 17 , passes through the illustrated bearing 12 and connects the drive 16 . An openable/closable inner cylinder door 6 is installed on the front cylinder opening of the inner cylinder 17, thereby realizing that the inner cylinder 17 is a sealed cabin structure.

An openable/closable door 5 is mounted on the housing 19 of this embodiment.

Example 1

This embodiment mainly solves the problem of how to accurately determine the water intake of the non-porous inner drum drum washing machine, and the specific scheme is as follows:

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

In this embodiment, the flow sensor 1 is installed on the water inlet pipeline to monitor the flow rate of the water inlet. When the set water inlet amount is reached, the water inlet valve 20 is closed to complete the water inlet. This embodiment adopts the flow sensor to solve the problem of water inflow according to the set water level of the non-porous inner drum washing machine, ensures the washing effect, has a simple structure and is convenient to operate.

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. The detergent box 3 is connected, and the outlet end of the detergent box 3 is communicated with the inner cylinder 17 through the second water inlet pipe. 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 be placed into the flow sensor 1 .

The front-loading 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 volume of the inner cylinder 17 in real time to reach the set water inflow volume, 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 installed at any position on the water inlet pipeline in this embodiment, and it is preferably arranged at the rear of the water inlet valve 20 to accurately measure the water flow rate 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 inflow of the inner cylinder 17 in real time to reach the set water inflow and close the water 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, and the drive motor 16 drives the inner drum through the transmission connection between the inner drum shaft 13 and the inner drum 17. When the cylinder 17 rotates, the inner cylinder shaft 13 has a hollow passage 14 which communicates with the inner cylinder 17 , and the water inlet pipeline communicates with the hollow passage of the inner cylinder shaft 13 .

Specifically, the inner cylindrical shaft 13 is connected to the driving motor 16, the driving motor 16 includes a stator and a rotor, and the rotor is fixedly connected to the inner cylindrical 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 cylindrical shaft 13 .

Further, a first dynamic sealing structure 15 is arranged between the water inlet pipeline and the through hole of the rotor, and a second sealing structure is arranged between the through hole of the rotor and the hollow channel 14 of the inner cylindrical shaft 13 .

In order to realize the 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 outer cylinder 18 is provided with a push rod mechanism 10 for pushing up the check valve plug 11 to drain water.

Preferably, the outer cylinder 18 is also provided with a locking mechanism for locking the rotation of the inner cylinder 17 .

In order to realize the 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, and the centrifugal valves are opened under the action of dehydration centrifugal force for dehydration. drain.

This embodiment also provides a method for controlling the front-loading washing machine. The washing machine executes a washing/rinsing procedure. During the water inflow process, a flow sensor detects the inflow water flow value in real time, and the washing machine calculates the water inflow amount according to the water inflow flow value and water inflow time , when the water intake reaches the set water intake of the washing machine, stop the water intake.

The drum 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 front-loading washing machine has the function of weighing clothes, which can determine the flow value of the incoming water according to the weight of the clothes.

Embodiment 2

As shown in FIGS. 2-4 , a drum washing machine of this embodiment includes an inner tub 17 and a water inlet pipeline. The inner tub is a non-porous inner tub, which holds washing water when washing clothes, and also includes an inner tub for washing clothes. The water measuring device is used for measuring the water intake. The water intake pipeline is connected with the water measuring device, and the water measuring device is communicated with the inner cylinder.

The drum washing machine of this embodiment is provided with a water measuring device, and before the water is fed into the inner tub 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 solving the problem. The non-porous inner drum washing machine ensures the washing effect according to the water inflow problem of the set water level, and has a simple structure and convenient operation.

Further, the water measuring device in this embodiment includes a water measuring tank 21, the water measuring tank 21 has a water inlet and a water outlet, the water inlet is connected 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 water volume 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 arranged 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 the 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 volume water tank 21 reaches the 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, so The water outlet control device 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 volume water tank 21 reaches the set value, and the water in the water volume water tank 21 is discharged 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 communicated with the water volume tank. Alternatively, the water level detection device 22 includes a plurality of water level detection probes arranged in the water measuring tank and arranged in 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 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, 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. .

An overflow hole 24 is provided on the water measuring tank 21 described in this embodiment, and the overflow hole 24 is connected to an overflow pipeline for leading out the overflowed water in the measuring water tank.

Preferably, the drum washing machine includes a drainage pipeline 8 , and the overflow pipeline communicates with the drainage 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 measuring water tank 21 and a water temperature detecting device for detecting the water temperature in the measuring water tank.

This embodiment also provides a control method for the drum washing machine. The washing machine executes the washing/rinsing procedure, and the washing machine controls the washing water to enter the volume water tank. All the water in the water tank is drained into the inner cylinder, and the water inflow is started again to enter the volume water tank, and this cycle is repeated until the water level in the inner cylinder reaches the set value, and the water inflow is ended.

Further, the washing machine controls the washing water to enter the water volume tank. When the amount of water in the volume 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 detection device detects that the water temperature in the volume water tank reaches When setting the value, all the water in the measuring water tank is drained into the inner cylinder.

Embodiment 3

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

As shown in FIG. 5-FIG. 7, a drum washing machine of this embodiment includes an inner tub 17, the inner tub 17 is a non-porous inner tub, holds washing water when washing clothes, and also includes a device for connecting the inner tub 17 with the outside world. The air pressure balance mechanism that balances the air pressure inside the inner cylinder.

When water enters, the gas in the sealed chamber of the inner cylinder can be overflowed through the equalizing mechanism under pressure to ensure the air pressure balance.

When the water is suddenly cut off, the external atmosphere can quickly enter the sealed chamber of the inner cylinder, and destroy the back 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.

As an implementation of this embodiment, the air pressure balancing mechanism includes a pressure equalizing channel 27 provided on the inner cylinder 17 , and the end of the pressure equalizing channel 27 communicating with the interior of the inner cylinder 17 is arranged on the inner cylinder 17 to rotate close to the The position of the central axis is always higher than the position of the highest water level in the inner cylinder 17 .

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 the transmission connection between the inner drum shaft 13 and the inner drum 17, and the pressure equalizing hole 27 is opened in the inner drum The shaft 13 communicates 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 . This can prevent the water in the inner cylinder from flowing out of the pressure equalizing hole.

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 tub opening of the inner tub 17 is installed to seal the inner tub of the inner tub. In the cylinder door 6, the cylinder opening 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. In this way, to prevent extreme situations, the water from this hole can also 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, 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. The plug 11 pushes up the ejector mechanism 10 for draining water.

Preferably, the outer cylinder 18 is also provided with a locking mechanism for locking the rotation of the inner cylinder.

Further, the drum washing machine of this embodiment includes a water inlet pipeline, the inner cylindrical shaft 13 has a hollow channel 14 that communicates with the inner cylinder 17 , and the water inlet pipeline communicates with the hollow channel 14 of the inner cylindrical shaft 13 ; The pressure equalizing channel 27 and the hollow channel 14 communicate with the interior of the inner cylinder 17 and are isolated from each other. In this way, it can be ensured that the gas in the sealed chamber of the inner cylinder can be discharged smoothly to maintain the air pressure balance inside the inner cylinder, and at the same time, water leakage can be prevented from being directly discharged from the pressure equalizing hole 27 .

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

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

Further, the inner cylindrical 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 cylindrical shaft; a through hole is provided in the center of the rotor, and the water inlet pipeline passes through the rotor The through hole is communicated with the hollow channel of the inner cylinder shaft.

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

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

Embodiment 4

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

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

The pressurizing mechanism described in this embodiment includes a pressurizing hole 28 and a negative pressure safety valve 29. The negative pressure safety valve 29 is arranged on the pressurizing hole 28, and is used for single operation when the internal pressure of the inner cylinder 17 is lower than the atmospheric pressure of the external environment. Leading to the pressurizing channel 28, the ambient air enters the inner cylinder 17 through the pressurizing channel 28 for pressurization until the air pressure inside the inner cylinder 17 is balanced with the external ambient 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 provided on the inner cylinder 17 near the central axis of rotation and is always higher than the highest pressure inside the inner cylinder 17 . At the water level position, the positive pressure safety valve 31 is arranged on the pressure relief hole 30, which is used for the one-way guide pressure relief hole 30 to release pressure when the internal pressure of the inner cylinder 17 is greater than the atmospheric pressure of the external environment, until the pressure inside the inner cylinder 17 is the same as that of the outside world. The ambient air pressure is balanced, and the positive pressure safety valve 31 is closed.

As shown in Fig. 9, when water enters, the gas in the airtight chamber of the inner cylinder 17 is pressurized. Once it is greater than the set value of the positive pressure safety valve, the positive pressure safety valve is opened, and it can overflow through the pressure relief hole to ensure the air pressure balance. .

As shown in Figure 10, when the water is suddenly cut off, the gas in the sealed cabin of the inner cylinder 17 is pressurized. Once it is less than the set value of the positive pressure safety valve, the external atmosphere can quickly enter the sealed cabin and destroy the back suction to ensure the air pressure balance. Avoid washing water being drawn into the mains network.

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

The front-loading washing machine of this embodiment includes a drive motor 16 and an inner drum shaft 13. The drive motor 16 drives the inner drum 17 to rotate through the transmission connection between the inner drum shaft 13 and the inner drum 17. The pressure hole 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 front-loading 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 tub opening of the inner tub 17 is installed with an inner tub that closes the inner tub Door 6, the cylinder opening of the outer cylinder 18 is open, one end of the pressurization hole 28 and/or the pressure relief hole 30 communicates with 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 cylindrical shaft 13 has a hollow channel 14 that communicates with the inner cylinder 17, and the water inlet pipeline is communicated with the hollow channel 14 of the inner cylindrical shaft 13; The pressure relief hole 30 and the hollow channel 14 are communicated with the inner cylinder 17 and are separated from each other.

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

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

The drum washing machine of this embodiment includes a water inlet pipeline, the inner cylindrical shaft 13 has a hollow channel 14 that communicates with the inner cylinder 17, and the water inlet pipeline is communicated with the hollow channel 14 of the inner cylindrical shaft 13; Said pressurizing hole 28 communicates with the hollow channel 14 .

Further, the hollow passage 14 extends from one end to the other end along the direction of the central axis of the inner cylindrical shaft 13 , one end of the pressurizing hole 28 is communicated with the hollow passage 14 , and the other end extends to the outer circumference of the inner cylindrical shaft 13 . The wall communicates with the interior of the outer cylinder 18 .

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

In this embodiment, the inner cylindrical shaft is connected to a driving motor, and the driving motor includes a stator and a rotor, and the rotor is fixedly connected to the inner cylindrical shaft; a through hole is provided at the center of the rotor, and the water inlet pipeline passes through the through hole of the rotor. It is communicated with the hollow channel of the inner cylindrical shaft.

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

As shown in FIGS. 11 and 12 , the pressurization passage 28 and the pressure relief passage 30 are both arranged on the inner cylinder shaft 13, and the openings communicating with the atmosphere are all inside the outer cylinder 18; the openings of the airtight chambers communicating with the inner cylinder 17 are all in the inner cylinder The inner side of the water inlet channel 14 of the shaft 13 .

It can be imagined that the preferred pressurization channel 28 and the pressure relief channel 30 are both provided on the inner cylinder shaft 13, and the openings communicating with the atmosphere are all inside the outer cylinder 18; the openings of the sealed cabin communicating with the inner cylinder 17 are all inside the sealing cabin.

Embodiment 5

As shown in Figures 13-16, a drum washing machine of this embodiment includes an inner tub 17, the inner tub 17 is a non-porous inner tub, which holds washing water when washing clothes, and also includes a position detector for detecting the position of the inner tub 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. The position detection device includes a position sensor 33 and a rotor. The detected terminal 38 is provided on the rotor, and the position sensor 33 is fixed at a position corresponding to the detected terminal 38 .

The front-loading washing machine of this embodiment includes an outer tub 18 , the position sensor 33 is disposed on the side of the outer tub 18 close to the driving motor 16 , and the position sensor 33 is disposed correspondingly to the detected terminal 38 .

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 type. sensor, or Hall-type sensor.

The front-loading washing machine of this embodiment includes a locking mechanism 35 for locking the rotation of the inner tub, and the position detection device is used to detect whether the inner tub 17 is locked in place after the locking mechanism 35 locks the inner tub 17, and/or , 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 .

Further, the locking mechanism 35 is installed on the side wall of the outer cylinder 18 close to the driving motor 16, the locking mechanism 35 includes a locking rod 40 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 inserted into the locking groove 39 under the driving of the locking motor 41 , the inner cylinder 17 is locked. end.

In the front-loading washing machine of this embodiment, the inner tub drain hole is provided on the side wall of the inner tub 17, the normally closed one-way valve plug 11 is installed on the inner tub drain hole, and the outer tub is installed for the one-way valve The ejector rod mechanism 10 for draining the water is pushed up by the plug; after the locking mechanism 35 locks the inner cylinder 17, the ejector rod mechanism 10 pushes up the check valve plug 11 for drainage.

Further, the ejector rod mechanism is installed on the outer cylinder, the ejector rod mechanism includes a retractable ejector rod and a ejector rod motor that drives the ejector rod telescopic motion, and the ejector rod is inserted into the inner cylinder through the wall of the outer cylinder. Open the one-way valve plug in the drain hole for drainage.

The drum washing machine of this embodiment includes a main controller, and the position detection sensor, the locking motor and the 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. The centrifugal valves are opened under the action of 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 driving motor 16 , and is specifically arranged on the rear of the outer tub 18 and the rotor frame on which the driving 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 via the circuit 43 .

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

The washing machine of this embodiment has a mounting bracket 32. After the fixing 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 frame of the driving motor has a locking groove and a detected terminal 38. .

Embodiment 6

As shown in Figures 17-18, a drum washing machine of this embodiment includes an inner tub 17 and an outer tub 18. The inner tub 17 is a non-porous inner tub, which holds washing water when washing clothes, and the outer tub 18 is arranged coaxially. Outside the inner cylinder 17, it 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 37 and a detected terminal 38 , the detected terminal 38 is arranged on the inner cylinder 17 , and the position sensor 37 is arranged on the inner wall of the outer cylinder 18 and is connected with the detected terminal 38 on the inner cylinder 17 . The detection terminals 38 are provided correspondingly.

Preferably, the detected terminal 38 is arranged on the side wall of the inner cylinder 17 , the position sensor 37 is arranged on the inner side wall of the outer cylinder 18 , and the circumference of the detected terminal 38 on the inner cylinder 17 is the same as that of the inner cylinder 17 . The circumference of the outer cylinder 18 where the position sensor 37 is located is concentrically arranged.

Preferably, the position sensor 37 is arranged on the inner side wall 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 front-loading washing machine of this embodiment includes a locking mechanism 35 for locking the rotation of the inner tub, and the position detection device is used to detect whether the inner tub 17 is locked in place after the locking mechanism 35 locks the inner tub 17, and/or , 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.

Further, the locking mechanism 35 is installed on the outer cylinder 18, the locking mechanism 35 includes a locking rod for telescopic movement and a locking motor for driving the telescopic movement of the locking rod, and the inner cylinder 17 is provided corresponding to the locking rod With the locking groove 39 matched with it, when the locking rod is extended and inserted into the locking groove 39 under the driving of the locking motor, the inner cylinder 17 is locked.

As shown in FIG. 8 , as an implementation of this embodiment, a lifting rib 43 is installed at the locking groove 39, so that the locking groove 39 is hidden. Further, alternatively, the terminals 38 to be detected are installed in the lifting rib 43 .

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

Further, the ejector rod mechanism 10 is installed on the outer cylinder 18, the ejector rod mechanism 10 includes a ejector rod for telescopic movement and a ejector rod motor for driving the ejector rod telescopic movement, and the ejector rod is inserted through the wall of the outer cylinder. Open the one-way valve plug in the drainage hole of the inner cylinder for drainage.

The drum washing machine of this embodiment includes a main controller 4, and the position detection sensor, the locking motor and the 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. The centrifugal valves are opened under the action of dehydration centrifugal force for dehydration and drainage.

Embodiment 7

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

After the position detection device detects that the inner cylinder is rotated to the set position, the locking mechanism is controlled to lock the inner cylinder, and/or after the locking mechanism locks the inner cylinder, the position detection device detects whether the inner cylinder is locked or not. in place.

As shown in Figure 19, the washing machine includes a drive motor that drives the inner tub to rotate. During the washing or rinsing process, the washing machine controls the drive motor to decelerate and execute the inner tub stop rotation procedure. 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 position of the inner cylinder still, and controls the locking mechanism to lock the inner cylinder for drainage.

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 procedure. When the inner drum speed is reduced to below the set safe speed, the locking mechanism is controlled to lock the inner drum. , if the position detection device detects that the inner cylinder rotates to the set position, the drainage will be carried out, otherwise, the drainage will not be started.

In this embodiment, the side wall of the inner cylinder is provided with an inner cylinder drain hole, a normally closed one-way valve plug is installed on the inner cylinder drain hole, and the outer cylinder is installed with a valve for pushing the one-way valve plug to drain water. The ejector rod mechanism; the drainage procedure includes: after the locking mechanism locks the inner cylinder, the ejector rod mechanism is controlled to push the check valve plug open for drainage.

The washing machine of this embodiment includes a drive motor that drives the rotation of the inner tub. During the dehydration process, the washing machine controls the drive motor to decelerate and execute the procedure of stopping the rotation of the inner tub. When the cylinder rotates to the set position, the drive motor is controlled to stop rotating and the position of the inner cylinder is kept unchanged, the locking mechanism is controlled to lock the inner cylinder, the dehydration procedure is over, and the door lock is released.

The washing machine of this embodiment includes a drive motor that drives the rotation of the inner tub. During the dehydration process, the washing machine controls the drive motor to decelerate and execute the procedure of stopping the rotation of the inner tub. Locked, the dehydration program is over, the door lock is released, and if the position detection device does not detect that the inner cylinder rotates to the set position, it will alarm.

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

When the rotor rotates to the relative position between the detected end and the position sensor, the inner cylinder rotates to the set position, and/or, after the locking mechanism locks the inner cylinder, the rotor rotates to the relative position between the detected end and the position sensor. The inner barrel locks in 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. The rotor of the driving motor is on the Corresponding locking rods are provided with locking grooves matched with them. When the locking rods are extended and inserted into the locking grooves under the driving of the locking motor, the inner cylinder is locked.

The front-loading washing machine of this embodiment includes an outer tub, and the outer tub is coaxially disposed outside the inner tub for collecting the water discharged from the inner tub and discharging it through a drainage pipeline. The position detection device includes a position sensor and a detected a terminal, the detected terminal is arranged on the inner cylinder, the position sensor is arranged on the inner wall of the outer cylinder and is correspondingly arranged with the detected terminal on the inner cylinder;

When the rotor rotates to the relative position between the detected end and the position sensor, the inner cylinder rotates to the set position, and/or, after the locking mechanism locks the inner cylinder, the rotor rotates to the relative position between the detected end and the position sensor. The inner barrel locks in 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 inner cylinder is provided with a lock corresponding to the locking rod. When the locking rod is inserted into the locking groove under the driving of the locking motor, the inner cylinder is locked.

Embodiment 8

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 can be opened and closed and installed on the inner tub opening of the inner tub It also includes a position detection device, which is used to detect whether the inner cylinder door 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. Rotation causes problems such as damage.

The position detection device includes a position sensor 33 and a detected terminal 38, wherein the detected terminal 38 is arranged on the inner cylinder door 6, the position sensor 33 is arranged at a position corresponding to the detected terminal 38, the position sensor 33 is fixed, and During the opening/closing process of the inner cylinder door 6, the detected terminal 38 rotates with the inner cylinder door 6, and the position between the two changes with the rotation of the inner cylinder 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 engaging 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 and coaxially disposed with the inner cylinder 17, and the position sensor 33 is disposed on the outer cylinder 18 and corresponds to the position of the detected terminal 38; preferably: all 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 is moved along with the inner cylinder door during the opening/closing process of the inner cylinder door 6. 6 rotates, the position between the two changes with the rotation of the inner drum door 6, and the generated signal value changes, and the drum washing machine judges whether the inner drum door 6 is closed in place according to the received signal value.

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

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 a position sensor 33; or a photoelectric position sensor, including a shading plate and a photoelectric sensor, the shading plate For the detected terminal 38, the photoelectric sensor is the 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 the position sensor 33; Eddy current sensor, including metal plate and eddy current sensor, said metal plate is detected terminal 38, said eddy current sensor is position sensor 33; or capacitive sensor, including moving pole, fixed pole and capacitive sensor, said moving pole The pole is detected terminal 38, the fixed pole and capacitance sensor are the position sensor 33; or the reed switch sensor includes a magnet and a reed switch sensor, the magnet is the detected terminal 38, and the reed switch sensor is the position 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 .

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

This embodiment also includes a control method for 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 the situation of unlocking, causing washing or rinsing and dehydration. In case of water leakage, or to prevent the failure of the door due to the negligence of the user, the door body is not locked in place and rotates at high speed and causes damage.

The signal value generated between the detected terminal 38 and the position sensor 33 when the inner tub 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 tub door is closed properly.

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 is different from the reference signal value, the main controller 4 of the drum washing machine determines the position where 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 body from being locked in place and causing damage due to high-speed rotation due to user negligence.

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 to lock the motor.

Embodiment 9

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

As shown in Figure 22, the drum washing machine provided by this embodiment includes: a casing 19; an inner tub 17, which is arranged in the casing 19 and holds washing water when washing clothes; an inner tub door 6, which can be opened and closed in the On the cylinder mouth of the inner cylinder 17 ; it also includes: a door body pushing and closing device 44 , which is arranged on the casing 19 and is used for pushing and closing the sealing door 6 .

In this embodiment, the door body push-closing device 44 provided on the housing 19 can automatically push and close the sealing door 6 without manual manual closing. The automation is higher, and it can effectively prevent the inner cylinder door 6 from not being closed due to the negligence of the user. The problem of closing avoids the risk of falling off the inner cylinder door 6 rotating at high speed.

Further, the door body pushing and closing device 44 includes: a power part; a linkage part, which is connected to the power output end of the power part; the power part drives the linkage part to move and act on the inner cylinder door 6 to push and close the inner cylinder door 6 closes.

Further, an opening is provided on the casing 19 corresponding to the cylinder opening of the inner cylinder 17, and an openable and closable door 5 is installed on the opening. The door pushing device 44 is arranged on the door 5 or the casing 19 is close to One side of the inner cylinder 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, and 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 while closing the door body 5 to save time and effort, and the mechanical linkage mechanism can be a linkage mechanism or a linkage folding mechanism. .

More preferably, the door body push-fit device 44 is an electric push-fit 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 Cam linkage.

As an alternative to the above solution, the power component is an oil pump provided 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 provided on the housing , the linkage component is a cylinder connected with the power output end of the air pump.

In this embodiment, the inner cylinder door 6 includes a rotating portion 61 that is rotatably connected to the inner cylinder 17 through a hinge and a push-fit portion 62 provided on the opposite side of the rotation portion 61 , and the door body push-fit device 44 corresponds to the push-fit portion The position of 62 is set on the door body 5 or the housing 19. According to the lever principle, the door body push-fit device 44 is correspondingly set on the opposite side away from the rotating part 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 push and close automatically, but also can realize the electric connection of the door body pushing and closing device 44 through the electrical connection between the controller and the motor or the oil pump or the air pump through the line. Control, more automatic and intelligent.

Embodiment ten

As shown in Figure 23, a control method of a washing machine, the washing machine comprises: a casing 19; an inner cylinder 17 for holding washing water when washing clothes; and the inner tub door push-closing device 46 disposed in the housing 19 for pushing and closing the inner tub door 6 to close. The control method includes: the washing machine controls the inner tub door pushing device 46 to start pushing and closing the inner tub door 6 to close.

In this embodiment, an opening is opened on the shell 19 of the washing machine corresponding to the cylinder opening of the inner cylinder 17, and an openable door 5 is installed on the opening. The control system of the washing machine determines whether the door 5 is closed. The inner cylinder door pushing and closing device 46 is controlled to be activated, and the inner cylinder door 6 is pushed and closed; if the judgment is negative, the inner cylinder 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 tub door push-closing device 46 can be set in the control system of the washing machine, and the user can start the inner tub door pushing and closing device 46 at any time through the control program as needed, and can press the button \ Press the button or other methods to select and activate the inner cylinder door push-closing 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. The cylinder door 6 is closed; if the detection is negative, the inner cylinder door push-closing device 46 is controlled to remain closed and not activated.

In this embodiment, a position detection device is provided in the outer tub 18 of the washing machine to detect whether the inner tub door 6 is closed in place. The position detection device includes a detected terminal 44 and a position sensor 45. The inner tub door 6 of the washing machine A detected terminal 44 is provided on the top, and a position sensor 45 is provided on the inner wall of the outer tub 18 . In this embodiment, the washing machine further includes a main controller 4 , which is electrically connected to the position sensor 45 .

The main controller 4 of the washing machine judges whether the inner drum door 6 is closed properly according to the signal detected by the position detection device, so as to avoid the situation that the inner drum door 6 is not closed, causing water leakage during washing, rinsing and dehydration, or preventing the inner drum door from being caused by the negligence of the user. 6 It is not closed in place and high-speed rotation causes damage and other problems.

When the washing machine detects that the door body 5 is closed and locked, the position detection device detects whether the inner tub door 6 of the washing machine is closed. If the detection is yes, the inner tub door push-closing device 46 is controlled to remain closed; The control system controls the inner cylinder door push-closing device 46 to start, and the push-close inner cylinder door 6 closes.

After the washing machine detects that the door body 5 is closed and locked, when the position detection device detects that the inner tub door 6 is not closed, it controls the action of the inner tub door pushing and closing device 46 to push and close the inner tub door 6 to close, and the inner tub door pushing and closing device 46 closes each time. After the first action, the position detection device detects that the inner drum door 6 has not been closed in place, then controls the inner drum door pushing and 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;

Preferably, the N0=3.

The specific detection method of the position detection device is to input the signal value generated between the detected terminal 44 and the position sensor 45 when the inner drum door 6 is closed in place, and input it into the main controller 4 of the washing machine, as the judgment of whether the inner drum door 6 is closed. The reference signal value in place.

When the signal value generated between the detected terminal 44 and the position sensor 45 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 tub door 6 is closed in place, and controls the washing machine to wash; when When the signal value generated between the detected terminal 44 and the position sensor 45 received by the main controller 4 of the washing machine is different from the reference signal value, the main controller 4 of the washing machine determines that the inner tub 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 the situation that it is not closed, causing water leakage during washing, rinsing and dehydration, or preventing the door body from being closed in place due to the user's negligence, causing damage caused by high-speed rotation.

Embodiments 8 to 10 may be a drum washing machine or a pulsator washing machine. Preferably, a drum washing machine is used as an example for description.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Within the scope of the technical solution of the present invention, personnel can make some changes or modifications to equivalent examples of equivalent changes by using the above-mentioned technical content, but any content that does not depart from the technical solution of the present invention is based on the technical solution of the present invention. Substantially 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: Inner cylinder, with inner cylinder mouth; The inner cylinder door, which can be opened and closed, is installed on the inner cylinder mouth of the inner cylinder; It is characterized in that it also includes: The position detection device is used to detect whether the inner cylinder door is closed in place. 2 . The washing machine according to claim 1 , wherein the position detection device comprises a position sensor and a detected terminal, the detected terminal is arranged on the inner drum door, and the position sensor is arranged at the same position as the detected terminal. 3 . Detect the corresponding position of the terminal. 3 . 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 disposed on the locking structure. 4 . 4. A washing machine according to claim 2, characterized in that it comprises an outer cylinder sleeved outside the inner cylinder and coaxial with the inner cylinder, and the position sensor is arranged on the outer cylinder and corresponds to the position of the detected terminal ; Preferably, the position sensor is provided on the outer wall of the outer cylinder and corresponds to the position of the detected terminal. 5 . The washing machine according to claim 2 , characterized in that it comprises a casing, the inner cylinder is arranged in the casing, and the position sensor is arranged on the casing and corresponds to the position of the detected terminal. 6 . 6. A washing machine according to claim 2, characterized in that: the 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 shading plate; 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 capacitance 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-type sensor, the position sensor is a Hall sensor, and the detected terminal is a permanent magnet. 7. A washing machine according to claim 6, characterized by comprising a control unit, and the control unit is electrically connected with the position sensor. 8. A washing machine according to claim 7, characterized in that it comprises a door body push-fit device, and the door body push-fit device is arranged on the casing or on the side of the machine door of the washing machine close to the inner tub door, and uses When the push-close inner cylinder door is closed, the door body push-close device is electrically connected with the control unit. 9 . The method for controlling a washing machine according to claim 1 , wherein the control unit of the washing machine judges whether the inner tub door is properly closed according to the signal detected by the position detection device. 10 . 10. The control method of a washing machine according to claim 9, 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 control unit of the washing machine, as a judgment The reference signal value of whether the cylinder door is closed or not; When the signal value generated between the detected terminal and the position sensor received by the control unit of the washing machine is equal to the reference signal value, the control unit of the washing machine determines that the inner tub door is closed in place; When the signal value generated between the detected terminal and the position sensor received by the control unit of the washing machine is different from the reference signal value, the control unit of the washing machine determines that the inner tub door is not closed in place.

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