WO2021023243A1

WO2021023243A1 - Washing machine and control method therefor

Info

Publication number: WO2021023243A1
Application number: PCT/CN2020/107250
Authority: WO
Inventors: 赵志强; 吕佩师; 许升; 劳春峰; 李以民
Original assignee: 青岛海尔滚筒洗衣机有限公司; 海尔智家股份有限公司
Priority date: 2019-08-06
Filing date: 2020-08-06
Publication date: 2021-02-11
Also published as: CN112342742A

Abstract

A washing machine and a control method therefor. The washing machine comprises: an inner drum (1) having a washing chamber for independently containing washing water; an inner drum door (6), which can be opened and closed and is mounted at a drum opening of the inner drum (1); an inner drum door lock for locking the inner drum door (6) to maintain a closed state; and a door lock detection device (3) for detecting whether the inner drum door lock is locked. The washing machine is provided with the door lock detection device (3) for detecting whether the inner drum door lock is locked in place, ensuring that the inner drum door (6) is locked in place, and ensuring that the accuracy of locking determination is 100%; as the rotation speed of the drum during dewatering reaches 1600 rpm / min, if the inner drum door on the inner drum cannot be locked well, a safety accident will occur, and thus the washing machine greatly improves the machine safety, the user's health and the user experience.

Description

Washing machine and control method thereof

Technical field

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

Background technique

As the most widely used household appliance in people's daily life, washing machine helps people get rid of the trouble of laundry and brings great convenience to people. However, existing washing machines generally include an inner tube and an outer tube. There are multiple dehydration holes on the wall of the inner tube. During the washing process, the washing water between the inner tube and the outer tube will not be used, causing this part of the washing machine. Water is wasted, and the dirt generated during the washing process will be accumulated as the water flows between the inner tube and the outer tube. With long-term use, the accumulation of dirt will affect the washing effect and reduce the user experience.

In order to solve the above-mentioned problems, there is a conventional drum washing machine with a non-porous inner tub. The opening of the non-porous inner tub is equipped with an inner tub door that can be opened/closed, thereby forming an internal chamber that can independently contain washing water. During the rinsing process, the washing water is contained in the inner tube, and there is no water between the inner tube and the outer tube, which solves the dirt problem between the inner tube and the outer tube and saves the amount of washing water. From the structural characteristics of the drum washing machine with a non-porous inner tub, it is known that during the washing and rinsing process, maintaining the sealing of the inner tub door is the key to forming the inner tub internal chamber that can independently contain the washing water. During the dehydration process where the drum rotates at a high speed, if the inner drum door is not locked or locked in place, it will cause serious safety accidents. Therefore, the detection of the closing position of the inner drum door is the key to the normal operation of the drum washing machine with the non-porous inner drum.

The applicant understands that a patent application in this industry provides a corresponding solution to this problem, for example, a position detection device for detecting whether the inner cylinder door is closed is provided on the outer cylinder or the shell. Specifically, a magnet is arranged on the inner cylinder door, and a reed switch is arranged on the outer cylinder. When the inner cylinder door is closed in place, the reed switch is closed by the magnet on the inner cylinder door to generate the inner cylinder door closing signal. This scheme seems feasible in principle, but in reality, there will be many problems. For example, the detection accuracy of the reed switch is low, and the displacement difference of the inner cylinder door in the two states of the inner cylinder door being locked and unlocked is small. The selection of specifications and position settings of reed pipes and electromagnets are more complicated, and there will be a closed but unlocked state of the inner cylinder door, which is difficult to be detected by the dry yellow pipe, which poses a safety hazard.

Therefore, this application aims to solve the problem of whether the inner cylinder door of the non-porous inner cylinder is locked in place.

In view of this, the present invention is proposed.

Summary of the invention

In order to solve the above-mentioned problems, the first object of the present invention is to provide a washing machine. Specifically, the following technical solutions are adopted:

A washing machine including:

The inner cylinder has an independent washing chamber for holding washing water;

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

The inner cylinder door lock is used to lock the inner cylinder door to keep it closed;

And a door lock detection device for detecting whether the inner cylinder door lock is locked.

Further, the inner cylinder door lock includes a lock tongue installed on the inner cylinder door and a lock seat installed on the cylinder mouth of the inner cylinder;

The washing machine includes an outer tube coaxially arranged outside the inner tube, and the door lock detection device is arranged on the outer tube to detect whether the lock tongue is locked in the lock seat.

Further, it also includes a door lock triggering device, which is linked with the bolt to enter the detection range of the door lock detection device during the inner cylinder door lock locking process.

Further, the door lock trigger device includes a movable part installed in the lock seat and an elastic part arranged between the movable part and the lock seat that can be moved back and forth; the movable part is provided with a door lock detection device Sensing parts detected;

The movable part is linked with the bolt during the locking process of the inner cylinder door lock, and the door lock detection device generates a detection signal after detecting the sensing part that has entered the detection range.

Further, the lock seat includes a seat body and a locking part arranged in the seat body. One end of the elastic part is fixed in the seat body, and the other end is connected to the movable part and extends to the locking part, and the lock tongue is locked in the locking part. The movement of the stop on the movable part is pushed into the detection range of the door lock detection device.

Further, an opening is opened on the locking member, and at least part of the movable member extends into the locking member from the opening under the action of the elastic member.

Further, the door lock triggering device includes a limit member arranged on the movable part to prevent the movable part from falling out of the lock seat;

Preferably, the limiting member is a limiting protrusion provided on the movable member, one end of the movable member extends into the locking member from the opening, and the other end is limited by the limiting protrusion outside the opening.

Further, the sensing element is a permanent magnet, and the door lock detection device includes a magnetic sensing element capable of sensing the permanent magnet;

Preferably, the permanent magnet is a magnet, and the magnetic induction element is a reed switch.

Further, it also includes an inner cylinder locking device for locking the inner cylinder at a certain position, and the door lock detection device is set corresponding to the position of the inner cylinder door lock when the inner cylinder is locked by the inner cylinder locking device.

The second objective of the present invention is to provide a method for controlling a washing machine. Specifically, the following technical solutions are adopted:

A control method of a washing machine. The washing machine receives a washing instruction, and a door lock detection device detects whether the inner cylinder door lock is locked, if it is, the washing instruction is executed, and if not, the washing instruction is stopped.

The invention provides a front-opening drum washing machine with an inner tub. An inner tub door is arranged on the inner tub to realize washing in the enclosed space of the inner tub, avoiding the possibility of clothes coming out of the inner tub, and the clothes being pressed and beaten to cause the clothes to flow out or splash from the inner tub The water out avoids the possibility of dirt adhesion between the inner and outer cylinders, and truly realizes that there is no water between the drums of the drum.

The washing machine of the present invention has a door lock detection device for the inner cylinder door lock to be locked in place to ensure that the inner cylinder door is locked in place, ensuring that the lock determination accuracy rate is 100%. Since the spin speed of the drum can reach 1600 rpm, the inner cylinder door on the inner cylinder If it is not locked properly, a safety accident will occur, which greatly improves the safety of the machine, user health and user experience.

Description of the drawings

Figure 1 is an assembly diagram of the outer tube, inner tube and inner tube door of the washing machine in the embodiment of the present invention;

Figure 2 is a cross-sectional view of the washing machine according to the embodiment of the present invention along the A-A plane in Figure 1;

Fig. 3 is a partial enlarged view of Fig. 2 of the washing machine of the embodiment of the present invention (the inner drum door is locked in place);

Fig. 4 is a partial enlarged view of Fig. 2 of the washing machine according to the embodiment of the present invention (the inner drum door is not locked in position/unlocked state).

detailed description

The washing machine and its control method of the present invention will be described in detail below with reference to the accompanying drawings:

As shown in Figures 1 to 4, a washing machine in this embodiment includes:

The inner cylinder 1 has an independent washing chamber for holding washing water;

The inner cylinder door 6 can be opened and closed at the mouth of the inner cylinder 1;

The inner cylinder door lock is used to lock the inner cylinder door 6 to keep it closed;

And the door lock detection device 3 is used to detect whether the inner cylinder door lock is locked.

This embodiment discloses a front-opening drum washing machine with a non-porous inner tub. The inner tub 1 has a non-porous structure. The inner tub shaft tightly connected to the inner tub 1 passes through the bearing shown and is connected to the drive motor. An openable/closable inner cylinder door 6 is installed on the front mouth of the inner cylinder 1, so as to realize that the inner cylinder 1 has an independent washing chamber for containing washing water. Therefore, the washing machine of this embodiment has a simple structure, and can greatly reduce the washing water consumption of the washing machine without filling washing/rinsing water between the inner tub and the outer tub, and avoid the possibility of dirt adhesion between the inner tub and the outer tub. , Which greatly improves user health and user experience, and greatly saves water resources.

The drum washing machine of this embodiment has an outer shell, and the outer shell includes: an upper panel, a front panel, a back panel and a bottom plate. A foot is installed and fixed on the bottom plate to support the entire washing machine. The inner cylinder inside the shell rotates, and it is preferable to set up lifting ribs to continuously lift and drop the clothes that are hit so as to wash the clothes.

From the structural characteristics of the drum washing machine with a non-porous inner tub, it is known that during the washing and rinsing process, maintaining the sealing of the inner tub door is the key to forming the inner tub internal chamber that can independently contain the washing water. During the dehydration process where the drum rotates at a high speed, if the inner drum door is not locked or locked in place, it will cause serious safety accidents. The washing machine of this embodiment uses the door lock detection device to detect the inner cylinder door lock, because the inner cylinder door lock is directly related to whether the inner cylinder door is closed in place, therefore, the door lock detection device 3 can detect more directly To the state of the inner tube door, fundamentally prevent the inner tube door from closing in place.

Further, the inner cylinder door lock described in this embodiment includes a lock tongue 17 installed on the inner cylinder door 6 and a lock seat 5 installed on the cylinder mouth of the inner cylinder 1. The washing machine includes coaxially arranged outside the inner cylinder 1 The outer cylinder 2, the door lock detection device 3 is arranged on the outer cylinder 2, and is used to detect whether the lock tongue 17 is locked in the lock seat 5.

In this embodiment, according to the specific structure of the inner cylinder door lock, the door lock detection device directly detects whether the bolt 17 of the inner cylinder door lock is locked in the lock base 5, so that it can accurately determine whether the inner cylinder door 6 is locked, which greatly improves The accuracy of the inner cylinder door locking in place can avoid potential safety hazards caused by improper locking.

Furthermore, since the displacement difference between the lock tongue 17 in the locked and unlocked states of the inner cylinder door is relatively small, if the movement of the lock tongue is to be accurately detected, the detection accuracy of the door lock detection device is required to be high, but This will definitely increase the cost of the door lock detection device. In order to reduce the cost of the door lock detection device as much as possible and ensure the detection accuracy, the washing machine of this embodiment also includes a door lock trigger device, and the door lock trigger device is an inner cylinder door lock. During the locking process, it is linked with the bolt 17 to enter the detection range of the door lock detection device 3.

In this embodiment, by setting the door lock trigger device, the inner cylinder door lock is linked with the bolt when the inner cylinder door lock is locked. The door lock trigger device can amplify the displacement of the bolt when the inner cylinder door lock is locked, making it easier to be detected by the door lock detection device 3 , To ensure the accuracy of detection.

As an implementation of this embodiment, the door lock triggering device described in this embodiment includes a movable member 13 installed in the lock base 5 that can reciprocate, and an elastic member disposed between the movable member 13 and the lock base 5. 15; The movable part 13 is provided with a sensor 16 that can be detected by the door lock detection device 3; the movable part 13 is linked with the bolt 17 during the inner cylinder door lock locking process, and the door lock detection device 3 detects The sensing element 16 in the detection range that has entered generates a detection signal.

The movable part 13 of the door lock trigger device of this embodiment is linked with the lock tongue when the inner cylinder door lock is locked, and can amplify the small displacement of the lock tongue, or extend the displacement of the lock tongue to the door lock detection device 3 Within the detection range of the inner cylinder door lock, accurate detection of the locked state of the inner cylinder door lock can be realized.

The elastic member 15 of the door lock trigger device of this embodiment is locked in the inner cylinder door lock. The movable member and the bolt are linked to compress the elastic member 15, and the elastic member 15 is elastically deformed. When the inner cylinder door lock is unlocked, the movable member does not After being resisted by the locking tongue 17, the elastic member 15 restores its deformation and pushes the movable member 13 to reset, so as to detect the next locking process.

Further, the lock seat 5 of this embodiment includes a seat body and a locking member arranged in the seat body. One end of the elastic member 15 is fixed in the seat body, and the other end is connected to the movable member 13 and extends to the locking member. The lock tongue 17 is locked in the locking member and abutted on the movable member 13 to push its movement into the detection range of the door lock detection device 3.

The locking member in this embodiment has an opening, and at least part of the movable member 13 extends into the locking member from the opening under the action of the elastic member 15.

The seat body of this embodiment includes a seat body lining plate 12 installed on the edge of the inner cylinder mouth, and the seat body lining plate 12 is provided with a seat body lining plate installation hole 11 for assembly.

The door lock triggering device of this embodiment includes a limiting member 14 arranged on the movable member to prevent the movable member 13 from falling out of the lock seat.

Preferably, the limiting member 14 is a limiting protrusion provided on the movable member 13, one end of the movable member 13 extends into the locking member from the opening, and the other end is restricted outside the opening by the limiting protrusion.

As an implementation of this embodiment, the sensing element 16 is a permanent magnet, and the door lock detection device 3 includes a magnetic induction element capable of sensing a permanent magnet; preferably, the permanent magnet is a magnet, and the The magnetic induction element is a reed tube.

The sensing distance range of the reed switch of this embodiment is L.

As shown in Figure 3, the inner cylinder door 6 of this embodiment is locked in place, and the lock tongue 17 is in place, so that the lock tongue 17 presses the movable part 13 and the magnet toward the outer cylinder wall, and the distance between the magnet and the reed tube is H. If the H≤L or the H<L, the reed switch is sucked in, and the passage is passed, it is determined that the door is locked in place.

As shown in Figure 4, the inner cylinder door 6 of this embodiment fails to be locked or opened, and the lock tongue 17 fails to be in place, so that the elastic member 15 presses the movable member 13 away from the outer cylinder wall to realize the magnet and the reed pipe The distance is H+h, and the H+h>L, the dry reed switch is not closed and disconnected, and it is judged that the door body cannot be locked in place.

The inner cylinder door 6 of this embodiment is provided with a rotatable door handle for opening the inner cylinder door lock. The door handle is installed on the inner cylinder door 6 through the door handle shaft 4.

The side of the inner cylinder door 6 opposite to the inner cylinder door lock of this embodiment is rotatably mounted on the cylinder mouth of the inner cylinder through an inner cylinder door shaft mechanism. The inner cylinder door shaft mechanism includes a shaft seat 8 and a shaft provided on the shaft. The rotating shaft 7 on the seat 8, the rotating shaft seat 8 includes a rotating shaft seat liner 9 installed on the cylinder mouth of the inner cylinder, and the rotating shaft seat liner 9 is provided with a rotating shaft seat liner mounting hole 10 for assembly.

The inner tub of the washing machine in this embodiment is used as the water container and the dehydration tub. The inner tub rotates during dehydration. Therefore, in order to ensure that the door lock detection device 3 provided on the outer tub 2 can perform lock detection relative to the inner tub door lock, this embodiment The washing machine further includes an inner tub locking device for locking the inner tub at a certain position, and the door lock detection device is set corresponding to the position of the inner tub door lock when the inner tub is locked by the inner tub locking device. In this way, the inner cylinder is locked at a certain position between the door lock detection device and the inner cylinder door lock each time by the inner cylinder locking device to ensure that the door lock detection device 3 can detect whether the inner cylinder door lock is locked.

In order to realize the inflow of water into the non-porous inner tub of this embodiment, the drive motor of the drum washing machine of this embodiment drives the inner tub to rotate through the inner tub shaft and the inner tub transmission connection, and the inner tub shaft has a communicating inner tub The said water inlet pipeline is connected with the hollow channel of the inner cylinder shaft.

The drum washing machine of this embodiment includes an inner tub 1, which is a non-porous inner tub, which contains washing water when washing clothes, and also includes air pressure for communicating the inner tub 1 with the external environment to balance the air pressure inside the tub Balance mechanism.

When water enters, the gas in the sealed 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 outside atmosphere can quickly enter the airtight compartment of the inner cylinder and destroy the back suction, ensuring the air pressure balance and avoiding the washing water being sucked into the tap water pipe network.

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

As an implementation of this embodiment, the air pressure balance mechanism includes a pressure equalization channel provided on the inner cylinder 8, and one end of the pressure equalization channel communicating with the inner cylinder 1 is provided on the inner cylinder 1 close to the central axis of rotation. Position and always higher than the highest water level in the inner cylinder 1.

Specifically, the pressure equalizing channel is opened on the inner cylinder shaft to connect the inside of the inner cylinder 1 with the external environment, and the highest water level in the inner cylinder 1 is lower than the inner cylinder shaft. In this way, the water in the inner cylinder can be prevented from flowing out of the pressure equalizing channel.

The pressure equalization channel in this embodiment includes a first channel section and a second channel section. The first channel section is arranged in parallel with the hollow channel, one end of which is connected to the inner cylinder, and one end of the second channel section is connected to the first channel section. , The other end extends to the outer peripheral wall of the inner cylinder shaft to communicate with the inside of the outer cylinder. Preferably, the second channel section is perpendicular to the first channel section to form an L-shaped pressure equalizing channel.

This embodiment provides a front-opening drum washing machine with an inner tub, and an inner tub door is provided on the inner tub to realize washing in the enclosed space of the inner tub, avoiding the possibility of clothes coming out of the inner tub, and the clothes being pressed and beaten causing the clothes to flow out of the inner tub or Splashing water avoids the possibility of dirt adhesion between the inner and outer cylinders, and truly realizes that there is no water between the drums.

The washing machine of this embodiment has a door lock detection device in which the inner cylinder door lock is locked in place to ensure that the inner cylinder door is locked in place and the accuracy of the lock determination is 100%. Since the spin speed of the drum will reach 1600 rpm, the inner cylinder on the inner cylinder If the door is not locked properly, a safety accident will occur, which greatly improves the safety of the machine, user health and user experience.

This embodiment also provides a method for controlling the washing machine. The washing machine receives a washing instruction, and the door lock detection device detects whether the inner cylinder door lock is locked, if so, the washing instruction is executed, and if not, the washing instruction is stopped.

The above are only the 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 in preferred embodiments, it is not intended to limit the present invention. Any technology familiar with this patent Without departing from the scope of the technical solution of the present invention, the personnel can use the technical content suggested above to make slight changes or modification into equivalent embodiments with equivalent changes, but any content that does not depart from the technical solution of the present invention is based on the technology of the present invention Essentially, any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the present invention.

Claims

A washing machine, characterized in that it comprises:

The inner cylinder has an independent washing chamber for holding washing water;

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

The inner cylinder door lock is used to lock the inner cylinder door to keep it closed;

And a door lock detection device for detecting whether the inner cylinder door lock is locked.
The washing machine according to claim 1, wherein the inner cylinder door lock comprises a lock tongue installed on the inner cylinder door and a lock seat installed on the mouth of the inner cylinder;

The washing machine includes an outer tube coaxially arranged outside the inner tube, and the door lock detection device is arranged on the outer tube to detect whether the lock tongue is locked in the lock seat.
The washing machine according to claim 2, further comprising a door lock triggering device, the door lock triggering device moves into the detection range of the door lock detection device when the inner cylinder door lock is locked in conjunction with the bolt.
The washing machine according to claim 3, wherein the door lock triggering device comprises a movable part installed in the lock seat and an elastic part arranged between the movable part and the lock seat that can reciprocate; The movable parts are provided with sensing parts that can be detected by the door lock detection device;

The movable part is linked with the bolt during the locking process of the inner cylinder door lock, and the door lock detection device generates a detection signal after detecting the sensing part that has entered the detection range.
The washing machine according to claim 4, wherein the lock seat comprises a seat body and a locking part arranged in the seat body, one end of the elastic part is fixed in the seat body, and the other end is connected to the movable part and extends to the locking part, The lock tongue is locked in the locking member and is urged on the movable member to push its movement into the detection range of the door lock detection device.
The washing machine according to claim 5, wherein an opening is formed on the locking member, and at least a part of the movable member extends into the locking member from the opening under the action of the elastic member.
The washing machine according to any one of claims 4-6, wherein the door lock triggering device comprises a limit member arranged on the movable part to prevent the movable part from falling out of the lock seat;

Preferably, the limiting member is a limiting protrusion provided on the movable member, one end of the movable member extends into the locking member from the opening, and the other end is limited by the limiting protrusion outside the opening.
The washing machine according to claim 4, wherein the sensing element is a permanent magnet, and the door lock detection device includes a magnetic induction element capable of sensing the permanent magnet;

Preferably, the permanent magnet is a magnet, and the magnetic induction element is a reed switch.
The washing machine according to claim 1, further comprising an inner tube locking device for locking the inner tube in a certain position, and the door lock detection device corresponds to the inner tube being locked by the inner tube locking device. The position of the cylinder door lock is set.
A method for controlling a washing machine according to any one of claims 1-9, wherein the washing machine receives a washing instruction, the door lock detection device detects whether the inner cylinder door lock is locked, if it is, the washing instruction is executed, if not, then Stop executing the laundry instructions.