WO2021197181A1

WO2021197181A1 - Washing machine, and control method therefor

Info

Publication number: WO2021197181A1
Application number: PCT/CN2021/082876
Authority: WO
Inventors: 王子真; 黄振兴; 许升
Original assignee: 青岛海尔洗衣机有限公司; 海尔智家股份有限公司
Priority date: 2020-04-01
Filing date: 2021-03-25
Publication date: 2021-10-07
Also published as: JP2023528137A

Abstract

The present invention relates to a washing machine. The washing machine comprises a housing, a tub is arranged inside the housing, and a metal detector for detecting metal parts in the tub is mounted inside the housing. The washing machine is provided with a metal detector so as to accurately detect whether metal articles are contained in the load to be washed in the tub, and the situation in which articles such as keys and coins are forgotten in a pocket of the load to be washed is thus prevented, thereby not only improving the washing experience for a user, but also avoiding the situation where the load is scratched by metal articles during the washing process. The present invention further relates to a washing machine control method, which is used for detecting clothes to be washed in the tub and detecting whether metal articles are contained in the tub. By means of the control method, the situation where the metal articles are mistakenly washed by the washing machine is effectively eradicated, and the foreign matter detection initiative and the level of intelligence of the washing machine are improved, thereby improving the washing effect and reducing the probability of damaging clothes to be washed during the washing process.

Description

Washing machine and control method

Technical field

The invention belongs to the technical field of washing machines, and in particular relates to a washing machine capable of detecting metal objects and preventing metal objects from being washed by mistake, and also relates to a washing machine control method capable of detecting metal objects and preventing metal objects from being washed by mistake .

Background technique

Nowadays, people's life is generally fast. When washing clothes in a washing machine, they often forget to check their pockets. When the clothes to be washed contain metal parts such as coins and keys, it is easy to cause the washing machine to make abnormal noises during washing. In particular, when there are electronic components such as car keys in the pockets of the clothes to be washed, the consequences are even more serious. Even if the user can remember to check the pockets of the clothes every time, it is very troublesome for the user to check the pockets one by one because the currently designed clothes have more or more alternative pockets.

Secondly, the metal parts on the clothes may scratch the clothes during the washing process. The existing hand-held metal detector requires the user to turn it on separately and actively detect the clothes, which also causes inconvenience to the user and cannot solve the damage caused by the metal parts on the clothes to the clothes during the washing process.

In view of the above technical shortcomings, this application is hereby submitted.

Summary of the invention

The purpose of the present invention is to overcome the above-mentioned defects in the prior art, and provide a washing machine to accurately detect whether metal objects are contained in the drum of the washing machine, so as to achieve the situation that the metal objects are washed by mistake. At the same time, a washing machine is provided to detect whether the clothes to be washed contains metal ornaments, so as to avoid accidental injury to the clothes to be washed.

In order to solve the technical problem and achieve the technical effect, the basic design idea of the technical solution adopted in the present invention is:

A washing machine includes a casing; a drum is arranged in the casing; and a metal detector for detecting metal parts in the drum is installed in the casing.

Further, the metal detector includes a detection coil; the detection coil is directly arranged or located outside the cylinder at any one or a combination of the side wall, the mouth side, and the bottom side of the cylinder.

Further, the detection coil is composed of a flexible cable that is coiled at least once in a loop;

Further preferably, the detection coil has a housing with a sealed annular cavity in the housing, and the flexible cable is installed in the annular cavity.

Further, the metal detector further includes a control module, which is connected to the detection coil for mutual communication; the control module is provided with a signal interface, and the signal interface is connected to the main control board of the washing machine via a communication line;

Preferably, the metal detector further has a power module, the input interface of the power module is connected to the power supply of the washing machine, and the output interface is connected to the control module.

Further, the metal detector further includes an alarm output module, the alarm output module is connected to the control module, and the alarm output module is a horn that emits an alarm prompt sound, a display device that generates an alarm prompt image, and sends an alarm to a mobile terminal. Any one or a combination of the wireless devices for prompting push; preferably, the alarm output module is arranged on the main control board of the washing machine, and the alarm output module is indirectly connected to the control module through the main control board of the washing machine.

Further, a water holding tank is arranged in the housing, the cylinder is rotatably installed on the water holding tank, and the metal detector is arranged on the water holding tank.

Further, the detection coil of the metal detector is arranged along a circle concentric with the cylinder axis, and the radial dimension of the detection coil is greater than the radial dimension of the cylinder; preferably, the angle between the detection coil and the axis of the cylinder is less than or equal to 90 degrees; preferably Yes, the detection coil is in the middle of the barrel.

Further, the detection coil of the metal detector is arranged in a parallel plane in any tangential direction of the barrel; preferably, the detection coil is located in a horizontal plane above and/or below the barrel; preferably, the detection coil is located below the middle of the barrel.

Further, the casing is provided with a clothing insertion opening opposite to the opening of the barrel, and the casing is provided with a door capable of opening and closing the clothing insertion opening, and the metal detector is provided on the door.

Further, the detection coil of the metal detector is arranged along a circle concentric with the cylinder axis, and the radial dimension of the detection coil is smaller than the radial dimension of the cylinder and larger than the radial dimension of the cylinder mouth.

Further, the detection coil of the metal detector is arranged on the barrel, and the detection coil is wirelessly connected with the control module arranged on the casing of the washing machine via a wireless module.

Compared with the prior art washing machine, the washing machine of the present invention has the following beneficial effects:

A metal detector is installed on the washing machine to accurately detect whether there are metal items in the load to be washed in the drum, thereby preventing the occurrence of keys, coins and other items being forgotten in the load pocket to be washed, which not only improves the user’s The washing experience also eliminates the occurrence of metal objects scratching the load during the washing process.

At the same time, the invention has a simple structure and significant effects, and is suitable for popularization and use.

Another object of the present invention is to overcome the above-mentioned defects in the prior art and provide a washing machine control method to accurately detect whether metal objects are contained in the drum of the washing machine, so as to cause the metal objects to be washed by mistake. At the same time, a washing machine control method is also provided, which detects whether the clothes to be washed contains metal ornaments, so as to avoid accidental injury to the clothes to be washed.

A washing machine control method detects the clothes to be washed in the tub, and sends out a prompt signal when it detects that the tub contains metal materials.

Further, after detecting the metal material in the barrel, the washing machine stops working and sends a prompt signal to the user; preferably, the prompt signal includes any one or a combination of a prompt sound, a prompt image, and a prompt push of a mobile device.

Further, after detecting that the barrel contains metal materials, the washing machine stops working and automatically opens the door of the washing machine;

Preferably, after opening the door, at intervals of a certain period of time, check whether the barrel contains metal materials. After detecting the metal material, continue to keep the door open; when it is detected that it does not contain metal material After removing the items, control the door to close.

Furthermore, after the door is closed, it detects whether the barrel contains metal materials. After detecting the metal material, it sends a reminder signal to the user; when the metal material is not detected, the user is prompted to choose Set the washing program and start working according to the washing program selected by the user.

Further, after detecting that the canister contains metal materials, it sends a prompt signal to the user whether to continue washing; after the user chooses to continue washing, the washing machine executes the washing mode containing metal objects, and the canister contains metal The clothes to be washed of material items are washed.

Further, after detecting the metal material in the barrel, it is determined whether the door is opened within the set time;

If not, execute the washing mode containing metal objects;

If it is, then check again whether the canister contains metal materials; if it is determined that the canister contains metal materials during the re-detection, the washing mode containing metal objects will be executed; if it is determined that the canister does not contain metal materials during the re-detection, Then the normal washing mode is executed.

Further, when the washing machine detects that the tub contains metal items and executes the washing mode containing metal items, the user selects the tub rotation speed of the washing program to decrease the set value, and/or the washing time to extend the set time as a modified washing program , The washing machine starts to work with the revised washing program.

Further, it specifically includes the following steps:

Step S1: Open the door of the machine, and the user puts the laundry to be washed into the tub;

Step S2: Detect whether the barrel contains metal objects; after detecting that the barrel contains metal objects, perform step S3; after detecting that the barrel does not contain metal objects, perform step S9;

Step S3: The washing machine stops working and sends a prompt message to the user;

Step S4: Determine whether the door of the washing machine is opened within the set time t; if yes, go to step S5; if not, go to step S6;

Step S5: Check again whether the barrel contains metal materials; if so, go to step S6; if not, go to step S9;

Step S6, the user selects a washing program;

Step S7: The washing machine reduces the drum speed of the selected washing program by the set value, and the washing duration extends the set time to generate a revised washing program;

Step S8, the washing machine starts to work by revising the washing program;

Step S9, the user selects a washing program;

Step S10: The washing machine starts to work with the selected washing program.

Further, if the washing machine detects that the tub contains articles containing metal materials and executes a washing mode containing metal articles, the washing machine can only execute washing procedures whose drum rotation speed is in a set interval and washing time is within a set time period; preferably, the washing machine It is detected that the tub contains metal items and the washing mode containing metal items is executed, the washing machine can only call and select the washing program with the tub rotation speed in the set interval and the washing time within the set time period for the user to select.

Further, the material of the clothes to be washed in the tub is detected, and the corresponding pre-stored washing program is called according to the detected clothes material, and the washing machine runs according to the called washing program, and the clothes to be washed are washed.

Compared with the prior art, the washing machine control method of the present invention has the following beneficial effects:

At the same time, through the above control method, the occurrence of metal items being washed by the washing machine by mistake is effectively prevented, and the foreign body detection initiative and intelligent level of the washing machine are also improved, thereby improving the washing effect and reducing the damage of the laundry to be washed during the washing process. The odds. In addition, the control method in the present application can remind the load to be washed decorated with metal materials, and control the washing machine to run in the corresponding program, so as to reduce the drum speed as much as possible, extend the washing time, and ensure the washing treatment effect on the washing load. Reduce clothing wear.

In order to make the design concept of the technical solution of the present invention clearer and facilitate further understanding of the beneficial effects brought about by it, some specific implementations of the present invention will be described in detail below with reference to the accompanying drawings.

Description of the drawings

The accompanying drawings are used as a part of the present invention to provide a further understanding of the present invention. The exemplary embodiments of the present invention and the description thereof 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 be obtained from these drawings without creative work. In the attached picture:

Figures 1 to 5 are schematic views of the structure of a washing machine in different embodiments of the present invention;

Fig. 6 is a structural connection block diagram of a metal detector in an embodiment of the present invention;

Figures 7 to 11 are schematic flow diagrams of washing machine control methods in different embodiments of the present invention.

Indicated in the picture: 1, barrel, 2, shell, 3, water tank, 4, door cover, 5, drive motor, 6, metal detector, 61, detection coil, 21 barrel shaft, 101, barrel mouth, 102, barrel Bottom, 103, the side wall of the cylinder.

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

Detailed ways

In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention. , But not used to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be understood as a limitation of the present 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 clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connected; it can be mechanically or electrically connected; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood in specific situations.

In the embodiment of the present invention, a washing machine is introduced. The washing machine may be a washing machine of any existing washing method, such as a pulsator washing machine, a drum washing machine, and so on. For ease of description in the embodiments of the present invention, a drum type washing machine is taken as an example for description, but the present invention is also applicable to a pulsator type washing machine.

As shown in Figures 1 to 6, an embodiment of the present invention introduces a washing machine. The washing machine includes a casing 2 in which a tub 1 is arranged. The axis of the tub 1 extends horizontally or is gradually inclined downward from front to back. The front end of the cylinder 1 is a cylinder mouth 101 provided with an opening, and the rear end is a cylinder bottom 102 provided with a seal. The cylinder side wall 103 connects the cylinder mouth 101 and the cylinder bottom 102 to form the cylinder 1. At the same time, a door cover 4 that can be opened outward is installed at the front end of the washing machine housing 2 for the purpose of closing the barrel opening 101 after the door cover 4 is closed, and putting clothes into the barrel 1 from the barrel opening 101 after opening the door cover 4. A water holding tank is provided on the outside of the barrel 1, and the water holding tank has a coaxial barrel-shaped structure with the barrel sleeved inside. The rear end of the tub 1 is installed in the washing machine housing 2 through a water tank 3, and the water tank 3 is arranged coaxially with the rear end of the tub 1. The upper and lower ends of the water tank 3 are respectively bent toward the front end of the tub 1 The upper and lower bent portions are respectively connected to the washing machine housing 2 via shock-absorbing suspension springs and shock-absorbing support rods, so as to realize the purpose of vibrating the water tank 3 to be installed in the washing machine housing 2; , The center of the drum bottom 102 is coaxially arranged with the motor shaft of the washing machine driving motor 5 to drive the drum 1 to rotate, and the drum 1 and the driving motor are fixedly installed on the water tank 3. Preferably, the cylinder bottom 102 and the drive motor are respectively arranged on both sides of the water tank 3, the drive motor is fixedly connected to the water tank 3, and the motor shaft of the drive motor passes through the water tank 3 through a bearing and is coaxially fixedly connected with the tank bottom 102 , And the motor shaft of the driving motor can rotate relative to the water tank 3, so that the drum 1 and the driving motor are installed on the water tank 3, and the drum 1 can be rotated independently by the driving motor to wash the inner clothes. Preferably, the motor shaft of the driving motor directly constitutes a cylindrical shaft, and the cylindrical shaft is coaxially and fixedly connected with the cylindrical bottom 102 of the cylindrical tube 1.

In the embodiment of the present invention, a metal detector 6 is installed in the housing 2 of the washing machine, and the metal detector 6 detects whether there are metal parts in the tub. A metal detector is installed on the washing machine to accurately detect whether there are metal items in the load to be washed in the drum, thereby preventing the occurrence of keys, coins and other items being forgotten in the load pocket to be washed, which not only improves the user’s The washing experience also eliminates the occurrence of metal objects scratching the load during the washing process.

At the same time, the embodiment of the present invention also provides a washing machine control method to detect the clothes to be washed in the drum when the washing machine is about to work or is working, and to send out a reminder when an item containing metal material in the drum is detected Signal. Thereby, it effectively prevents the occurrence of metal objects being washed by the washing machine by mistake, and also improves the foreign body detection initiative and intelligence level of the washing machine, thereby achieving improved washing effect and reducing the probability of damage to the clothes to be washed during the washing process. In addition, the control method in this application can remind the load to be washed decorated with metal materials, and control the washing machine to run in the corresponding program to reduce the drum speed as much as possible, extend the washing time, and ensure the washing treatment effect on the washing load. Reduce clothing wear.

Example one

As shown in Figures 1 to 6, this embodiment introduces a washing machine. The washing machine includes a housing 2; a metal detector 6 is installed in the housing 2, and the metal detector 6 detects whether there are metal parts in the tub 1 .

In this embodiment, the metal detector 6 includes a detection coil 61; the detection coil 61 is directly arranged on, or located outside the cylinder, on any one of the cylinder side wall 103, the cylinder mouth 101 side, and the cylinder bottom 102 side. Or combination office.

In this embodiment, the detection coil 61 is composed of a flexible cable that is coiled at least once in a ring; preferably, the detection coil 61 is composed of a flexible cable that is coiled into a ring with multiple turns. In this embodiment, the detection coil 61 has a housing with a sealed annular cavity in the housing, and the flexible cable is installed in the annular cavity. The housing of the detection coil 61 is made of a material that can penetrate electromagnetically and does not shield electromagnetic waves; for example, a plastic material. The housing of the detection coil 61 mainly supports the flexible cable assembled in the inner annular cavity to ensure that it is arranged in a ring-shaped coil.

As shown in FIG. 6, in this embodiment, the metal detector 6 further includes a control module, which is communicably connected with the detection coil 61; The board is connected; preferably, the control module is respectively connected to the detection coil 61 via the signal sending unit and the signal receiving unit to send or receive signal instructions to the detection coil 61 respectively.

In this embodiment, the metal detector 6 also has a power module, the input interface of the power module is connected to the power supply of the washing machine, and the output interface is connected to the control module. The power supply module is connected to the control module. The power supply supplies controllable power to the detection coil 61 through the power supply module. After the detection coil 61 receives a single power supply, its magnetic flux is detected, and the changed magnetic flux detection signal is sent to the control module. The control signal The detection value is compared with the set value and a signal for determining whether there is a metal object in the barrel is generated.

In this embodiment, the metal detector 6 further includes an alarm output module, the alarm output module is connected to the control module, and the alarm output module is a horn that emits an alarm prompt sound, a display device that generates an alarm prompt image, and a Any one or a combination of the wireless devices that the mobile terminal sends out an alarm to prompt the push. Preferably, the alarm output module is arranged on the main control board of the washing machine, and the alarm output module is indirectly connected to the control module via the main control board of the washing machine, so that the components on the washing machine directly constitute the alarm output module on the metal detector 6, so that the metal detector 6Integrated on the washing machine, reducing the number of parts and saving costs.

Example two

As shown in Figures 1 to 3, this embodiment based on the first embodiment above also has the following technical features:

In this embodiment, the housing 2 is provided with a water tank, the cylinder 1 is rotatably installed on the water tank 3, and the metal detector 6 is provided on the water tank 3. By setting the detection coil on the water tank that is not selectable relative to the cylinder, when detecting whether there are metal objects in the cylinder, the cylinder can be controlled to rotate relative to each other, and the stationary detection coil is used to detect the moving items in the cylinder, and then Improved detection accuracy.

As shown in FIG. 1, in this embodiment, the detection coil 61 of the metal detector 6 is arranged along a circle concentric with the axis of the cylinder 1, and the radial dimension of the detection coil 61 is larger than the radial dimension of the cylinder 1. Preferably, the detection coil 61 is provided in the middle of the side wall 103 of the cylinder, so that the detection coil 61 detects the middle of the cylinder 1 whose axis extends horizontally, which effectively improves the detection accuracy. At the same time, in order to further improve the detection accuracy, metal detectors 6 can be respectively arranged in multiple radial directions of the barrel 1 to further expand the detection coverage.

In addition, in this embodiment, in order to increase the detection coverage, the detection coil 61 can be arranged obliquely with any radial cross section of the cylinder 1, so that there is a clamp of less than 90 degrees between the detection coil 61 and the axis of the cylinder 1. The angle, in turn, enables the detection coil 61 to have a certain coverage in the direction of the cylinder axis, so that the detection coil 61 can perform metal detection on the load to be washed in the range, so that the detection range of the metal detector 6 is significantly expanded.

As shown in Fig. 2, in this embodiment, the detection coil 61 of the metal detector 6 can also be arranged on the water tank 3 on the side of the bottom 102 of the cylinder; or, as shown in Fig. 3, the detection coil 61 of the metal detector 6 The coil 61 can also be arranged on the water tank 3 on the side of the barrel mouth 101 of the barrel 1, which can also achieve the purpose of metal detection of the articles in the barrel. At the same time, especially when the washing machine is a pulsator washing machine, since the drum 1 generally extends in the vertical direction, the load to be washed is accumulated on the drum bottom 102. A metal detector 6 is provided on the water tank 3 on the side of the drum bottom 102. The detection coil 61 can effectively improve the detection accuracy.

Example three

As shown in Figure 4, this embodiment also has the following technical features based on the first embodiment described above:

In this embodiment, a water tank 3 is provided in the housing 2, the cylinder 1 is rotatably installed on the water tank 3, and the metal detector 6 is provided on the water tank 3. By setting the detection coil on the water tank that is not selectable relative to the cylinder, when detecting whether there are metal objects in the cylinder, the cylinder can be controlled to rotate relative to each other, and the stationary detection coil is used to detect the moving items in the cylinder, and then Improved detection accuracy.

As shown in Fig. 4, in this embodiment, the detection coil 61 of the metal detector 6 is set in the parallel surface of the drum 1 in any tangential direction, so as to carry out the washing of the load in the rotating drum 1 that moves close to the detection coil 61. Metal detection. Since the metal detector 6 extends in the cut surface of the cylinder 1, the coverage detection range of the metal detector 6 is not limited to a single cross-section, and the detection range is increased.

Preferably, in this embodiment, the detection coil 61 of the metal detector 6 is in a horizontal plane above and/or below the barrel; further preferably, in order to improve the detection accuracy, the detection coil 61 is located below the middle of the barrel 1. Detect the places where clothes are easy to accumulate to further improve the accuracy of detection. At the same time, in order to further improve the detection accuracy, metal detectors 6 can be respectively arranged in multiple radial directions of the barrel 1 to further expand the detection coverage.

Example four

As shown in Figure 5, this embodiment also has the following technical features based on the first embodiment described above:

In this embodiment, the housing 2 is provided with a clothing insertion opening opposite to the barrel opening 101 of the tube 1, and the housing 2 is provided with a door 4 that can open and close the clothing insertion opening, and the metal detector 6 is provided in the machine. On door 4.

In this embodiment, the detection coil 61 of the metal detector 6 is arranged along a circle concentric with the axis of the cylinder 1, and the radial dimension of the detection coil 61 is smaller than the radial dimension of the cylinder side wall 103 of the cylinder 1, and greater than the radial dimension of the cylinder mouth 102 of the cylinder 1. size.

Example four

Based on the above-mentioned first embodiment, this embodiment also has the following distinguishing technical features:

In this embodiment, the detection coil of the metal detector is directly arranged on the barrel, and the detection coil is wirelessly connected to the control module provided on the washing machine housing via a wireless module. Through the above arrangement, the detection coil can be directly installed on the rotating drum, metal detection of the load to be washed in the drum, and wireless power supply and signal transmission can be realized (not specified in the drawings).

Example five

As shown in Figures 7 to 11, this embodiment introduces a washing machine control method, which detects the laundry in the tub to be washed, and sends a prompt signal when it detects that the tub contains metal materials.

In this embodiment, the washing machine stops working and sends a reminder signal to the user after detecting that the barrel contains metal materials. Preferably, the prompt signal includes any one or a combination of a prompt sound, a prompt image, and a prompt push of a mobile device; the prompt signal may be issued by a component on the washing machine, or may be set on a metal detector separately provided in the washing machine The unit is issued.

As shown in Figure 7, in this embodiment, after detecting that the barrel contains metal material, the washing machine stops working and automatically opens the door of the washing machine; preferably, after opening the door, every certain period of time t , Detect whether there are metal materials in the barrel, keep the door open after detecting the metal material, and control the door to close when the metal material is not detected.

In this embodiment, after the door is closed, it is detected whether there are metal materials in the barrel. After the metal materials are detected, the user is prompted; after the metal materials are not detected, Prompt the user to select a washing program, and start working according to the washing program selected by the user.

In this embodiment, after detecting items containing metal materials in the drum, the user is sent a pending selection prompt signal whether to continue washing; after the user chooses to continue washing, the washing machine executes the washing mode containing metal items and continues The follow-up work is to wash the clothes to be washed that contains metal items in the drum.

In this embodiment, when the washing machine detects that the drum contains metal items and executes the washing mode containing metal items, the drum speed of the washing program selected by the user is reduced by the set value, and/or the washing time is extended by the set time. To correct the washing program, the washing machine starts to work with the correct washing program.

As shown in Figure 8, this embodiment specifically includes the following steps:

Step S4, the washing machine executes step S2 again every set time period t; and synchronously continues to execute the following step S5;

Step S5: After the user confirms to the washing machine that the laundry contains metal items according to the prompt information, skip to step S4 and execute step S6;

Step S6, the user selects a washing program;

Step S8, the washing machine starts to work by revising the washing program;

Step S9, the user selects a washing program;

Step S10: The washing machine starts to work with the selected washing program.

Example Six

The difference between this embodiment and the fifth embodiment above is:

In this embodiment, after detecting the metal material in the barrel, it is determined whether the door is opened within the set time;

If not, execute the washing mode containing metal objects;

If yes, check again whether the canister contains metal materials; if it is determined that the canister still contains metal materials during the re-test, the washing mode containing metal objects will be executed; if it is determined again that the canister does not contain metal materials , The normal washing mode is executed.

As shown in Figure 9, this embodiment specifically includes the following steps:

Step S5: Check again whether there are metal materials in the barrel; if yes, go to step S6; if not, go to step S9;

Step S6, the user selects a washing program;

Step S8, the washing machine starts to work by revising the washing program;

Step S9, the user selects a washing program;

Step S10: The washing machine starts to work with the selected washing program.

Example Seven

The difference between this embodiment and the above-mentioned Embodiments 5 and 6 lies in:

In this embodiment, if the washing machine detects that the drum contains items containing metal materials and executes the washing mode containing metal items, the washing machine can only execute the washing program with the drum rotation speed in the set interval and the washing time within the set time period; preferably If the washing machine detects that the tub contains metal items and executes the washing mode that contains metal items, the washing machine can only call and select the washing program with the tub rotation speed in the set interval and the washing time within the set time period for the user to choose .

As shown in Figure 10, this embodiment specifically includes the following steps:

Step S2: Detect whether the barrel contains metal objects; after detecting that the barrel contains metal objects, perform step S3; after detecting that the barrel does not contain metal objects, perform step S8;

Step S6: The washing program whose washing machine is in the set interval and the washing time is within the set time period is called, and the user selects one of the washing programs called from the washing machine;

Step S7, the washing program selected by the washing machine starts to work;

Step S8, the user selects a washing program;

Step S9: The washing machine starts to work with the selected washing program.

Example 9

This embodiment is based on the above embodiments 5 to 8, and also has the following technical features:

In this embodiment, the washing machine detects the material of the clothes to be washed in the tub, calls the corresponding pre-stored washing program according to the detected clothes material, and the washing machine runs with the called washing program to perform washing treatment on the clothes to be washed. At the same time, in order to ensure the completion of the above control method, a clothing material detector needs to be installed on the washing machine to automatically detect the material of the underwear. The clothing material detector in this embodiment may have any existing structure.

As shown in Figure 11, this embodiment specifically includes the following steps:

Step S6, detecting the load material in the drum to be washed, and selecting the corresponding washing program according to the detected material;

Step S8, the washing machine starts to work by revising the washing program;

Step S9, the user selects a washing program;

Step S10: The washing machine starts to work with the selected washing program.

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. However, any content that does not deviate 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 solution of the present invention.

Claims

A washing machine includes a casing; a tub is arranged in the casing; and is characterized in that a metal detector for detecting metal parts in the tub is installed in the casing.
The washing machine according to claim 1, wherein the metal detector comprises a detection coil; the detection coil is directly arranged on, or located outside the drum, on the side wall, the mouth side, and the bottom side of the drum. Any or a combination of.
The washing machine according to claim 2, wherein the detection coil is composed of a flexible cable that is coiled at least once in a loop;

Further preferably, the detection coil has a housing with a sealed annular cavity in the housing, and the flexible cable is installed in the annular cavity.
The washing machine according to claim 2, wherein the metal detector further comprises a control module, the control module and the detection coil are mutually communicatively connected; the control module is provided with a signal interface, the signal interface is connected to the washing machine via a communication line The main control board is connected;

Preferably, the metal detector further has a power module, the input interface of the power module is connected to the power supply of the washing machine, and the output interface is connected to the control module.
The washing machine according to claim 4, wherein the metal detector further comprises an alarm output module, the alarm output module is connected to the control module, and the alarm output module is a horn that emits an alarm tone, Any one or a combination of a display device that generates an alarm prompt image, and a wireless device that sends an alarm prompt push to the mobile terminal;

Preferably, the alarm output module is arranged on the main control board of the washing machine, and the alarm output module is indirectly connected to the control module via the main control board of the washing machine.
A washing machine according to any one of claims 1 to 5, wherein a water tank is provided in the housing, the drum is rotatably mounted on the water tank, and the metal detector is provided on the water tank.
The washing machine according to claim 6, wherein the detection coil of the metal detector is arranged along a circle concentric with the axis of the drum, and the radial size of the detection coil is larger than the radial size of the drum;

Preferably, the angle between the detection coil and the axis of the barrel is less than or equal to 90 degrees;

Preferably, the detection coil is located in the middle of the barrel.
The washing machine according to claim 6, wherein the detection coil of the metal detector is arranged in a parallel plane in any tangential direction of the drum;

Preferably, the detection coil is in a horizontal plane above and/or below the barrel;

Preferably, the detection coil is located below the middle of the barrel.
A washing machine according to any one of claims 1 to 4, characterized in that the casing is provided with a clothes inserting opening opposite to the opening of the tub, and the casing is provided with a door capable of opening and closing the clothes inserting opening, The metal detector is arranged on the door;

Preferably, the detection coil of the metal detector is arranged along a circle concentric with the cylinder axis, and the radial dimension of the detection coil is smaller than the radial dimension of the cylinder and larger than the radial dimension of the cylinder mouth.
The washing machine according to any one of claims 1 to 4, wherein the detection coil of the metal detector is provided on the drum, and the detection coil is wirelessly connected to the control module provided on the casing of the washing machine via a wireless module.
A method for controlling a washing machine is characterized in that: detecting the clothes to be washed in the tub, and detecting whether the tub contains articles of metal material.
The washing machine control method according to claim 11, characterized in that, after detecting that the barrel contains metal materials, the washing machine stops working and sends a prompt signal to the user;

Preferably, the prompt signal includes any one or a combination of a prompt sound, a prompt image, and a prompt push of a mobile device.
The washing machine control method according to claim 12, characterized in that, after detecting that the barrel contains metal materials, the washing machine stops working and automatically opens the door of the washing machine;

Preferably, after opening the door, at intervals of a certain period of time, check whether the barrel contains metal materials. After detecting the metal material, continue to keep the door open; when it is detected that it does not contain metal material After removing the items, control the door to close.
The method for controlling a washing machine according to any one of claims 11 to 13, wherein after the door is closed, it is detected whether the barrel contains metal materials, and after the metal materials are detected, the The user sends out a reminder signal; after no metal-containing items are detected, it starts to work according to the washing program selected by the user.
A washing machine control method according to any one of claims 11 to 14, characterized in that, after detecting that the barrel contains metal materials, a prompt signal to be selected is sent to the user whether to continue washing;

After the user chooses to continue washing, the washing machine executes a washing mode containing metal items, and washes the laundry containing metal items in the tub.
A washing machine control method according to any one of claims 11 to 14, characterized in that, after detecting that the barrel contains metal materials, it is determined whether the door is open within a set time;

If not, execute the washing mode containing metal objects;

If it is, then check again whether the canister contains metal materials; if it is determined that the canister contains metal materials during the re-detection, the washing mode containing metal objects will be executed; if it is determined that the canister does not contain metal materials during the re-detection, Then the normal washing mode is executed.
A washing machine control method according to claim 15 or 16, characterized in that, when the washing machine detects that the tub contains metal items and executes the washing mode containing metal items, the user selects the drum speed reduction setting of the washing program Value, and/or the extended washing time set time as a modified washing program, the washing machine starts to work with the modified washing program;

Preferably, it specifically includes the following steps:

Step S1: Open the door of the machine, and the user puts the laundry to be washed into the tub;

Step S2: Detect whether the barrel contains metal objects; after detecting that the barrel contains metal objects, perform step S3; after detecting that the barrel does not contain metal objects, perform step S9;

Step S3: The washing machine stops working and sends a prompt message to the user;

Step S4: Determine whether the door of the washing machine is opened within the set time t; if yes, go to step S5; if not, go to step S6;

Step S5: Check again whether there are metal materials in the barrel; if yes, go to step S6; if not, go to step S9;

Step S6, the user selects a washing program;

Step S7: The washing machine reduces the drum speed of the selected washing program by the set value, and the washing duration extends the set time to generate a revised washing program;

Step S8, the washing machine starts to work by revising the washing program;

Step S9, the user selects a washing program;

Step S10: The washing machine starts to work with the selected washing program.
A washing machine control method according to claim 15 or 16, characterized in that, if the washing machine detects that the tub contains metal items and executes the washing mode containing metal items, the washing machine can only execute the drum speed in the set interval. , The washing program with the washing time within the set time period;

Preferably, if the washing machine detects that the tub contains metal items and executes the washing mode containing metal items, the washing machine can only call and provide the user with the washing program whose drum speed is in the set interval and the washing time is within the set time period. choose.
A washing machine control method according to any one of claims 11 to 18, characterized in that the material of the clothes to be washed in the tub is detected, and the corresponding pre-stored washing program is called according to the detected clothes material, and the washing machine uses the called washing The program runs, and the laundry to be washed is washed.
A washing machine applying the control method according to any one of claims 11 to 19, characterized in that: a metal detector for detecting metal objects in the drum is installed;

Preferably, it is a washing machine as claimed in any one of claims 1 to 10.