Roller washing machine and control method

Abstract

The invention discloses a roller washing machine and a control method, and the roller washing machine comprises a housing which is provided with a clothes putting port at the front side; the machine door is installed on the front side plate of the shell corresponding to the clothes putting opening capable of being opened and closed; a circle of window pad is arranged at the clothes putting opening of the shell and is used for being in sealing contact with the closed machine door so as to correspondingly seal the clothes putting opening; the foreign matter recognition sensor is arranged between the front side plate of the shell and the machine door and / or between the machine door and the window pad and is used for detecting whether a foreign matter is clamped by the closed machine door at the clothes putting opening or not. The foreign matter recognition sensor is arranged at the clothes putting opening, so that the situation that clothes in the roller are clamped by the machine door to be damaged in the running process of the washing machine is prevented, and the remarkable technical progress of accurate foreign matter detection on the clothes putting opening of the washing machine is achieved. Meanwhile, the device is simple in structure, simple in method, remarkable in effect and suitable for application and popularization.

Description

Technical Field

[0001] The present invention relates to the field of drum washing machines, and in particular to a drum washing machine, and more particularly to a drum washing machine that can prevent a machine door from clamping foreign objects; and also to a control method for a drum washing machine that can prevent foreign objects from clamping. Background Art

[0002] Washing machines are essential household appliances in people's daily lives. With the improvement of people's living standards, washing machines are also changing in the direction of people's needs. Existing drum washing machines generally include structures such as an inner drum, an outer drum, a shell, a shock absorbing system, a window pad, and a machine door. The outer drum is supported by the shock absorbing system and installed in the washing machine shell. The inner drum is coaxially sleeved inside the outer drum. A driving device such as a motor is installed on the outer drum. The motor output shaft is connected to the inner drum to drive the inner drum to rotate around the axis to achieve the effect of beating and washing the clothes contained inside. One end of the outer drum is closed as the outer drum bottom, and the other end is provided with an opening to form the outer drum mouth. The outer drum mouth is connected to the front side plate of the shell through the window pad, so that the distance between the outer drum mouth and the front side plate of the shell can be closed by the window pad, and the telescopic deformation of the window pad can be used to achieve the outer drum vibration without interfering with the shell. In addition, an openable and closable machine door is installed on the shell, and the machine door cooperates with the window pad so that the closed machine door can correspond to the closed outer drum mouth, so that a water chamber is formed in the outer drum.

[0003] However, the existing drum washing machine has the following problems:

[0004] When users put clothes into the drum from the clothing inlet, some clothes may be left in the clothing inlet, or items that fall off the clothes may fall into the clothing inlet, resulting in foreign objects in the clothing inlet. Foreign objects left in the clothing inlet may cause the door to be unable to close completely, or be clamped between the door and the window gasket or the housing after the door is closed. The clamped foreign objects may be pulled by the rotating inner drum during the subsequent operation of the washing machine, causing the clothes to be torn.

[0005] Therefore, how to detect foreign objects at the clothing inlet of a drum washing machine and prevent the clamped clothes from affecting the operation of the washing machine have become technical problems that need to be solved urgently.

[0006] In view of this, the present invention is proposed. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a drum washing machine to achieve the purpose of accurately detecting foreign objects at the clothing inlet; another object of the present invention is to provide a control method for a drum washing machine to achieve the technical effect of clamping clothes when the door is closed to avoid damage to the clothes to be washed and the washing machine.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0009] A drum washing machine comprises: a shell body, a front side of which is provided with a clothing introduction opening; a machine door, which is installed on the front side plate of the shell body corresponding to the openable and closable clothing introduction opening; a circle of window pads are installed at the clothing introduction opening of the shell body, which is used to seal and contact with the closed machine door to close the clothing introduction opening; and a foreign object recognition sensor is also provided between the front side plate of the shell body and the machine door, and / or between the machine door and the window pad, to detect whether there is a foreign object at the clothing introduction opening that is clamped by the closed machine door.

[0010] Furthermore, the foreign body recognition sensor is arranged on the front side plate of the shell to detect any one or a combination of the gap distance, pressure, and extrusion deformation between the shell and the door;

[0011] And / or, the foreign object recognition sensor is arranged on the window gasket to detect any one or a combination of the gap distance, pressure, and extrusion deformation between the window gasket and the door.

[0012] Furthermore, a sealing area is provided at the peripheral area of ​​the lower edge of the clothing loading port of the front side plate of the housing, which is in sealing contact with the rear side wall of the closed door, and at least one foreign body recognition sensor is provided at the first sealing area;

[0013] And / or, the inner peripheral side of at least the lower half of the annular window gasket is a sealing area in relatively sealing contact with the outer peripheral wall of the closed door, and at least one foreign object recognition sensor is provided at the second sealing area.

[0014] Furthermore, the first sealing area is provided with a plurality of foreign object recognition sensors, and the foreign object recognition sensors are arranged at intervals along the circumferential direction of the clothing loading port and are installed on the front side plate of the shell;

[0015] And / or, the second sealing area is provided with a plurality of foreign object recognition sensors, and the foreign object recognition sensors are arranged at intervals along the circumferential direction of the clothing loading port and installed on the window pad;

[0016] Preferably, a foreign object recognition sensor is provided at least at the first sealing area at half the height of the clothing loading port, and at least at the first sealing area below the lowest point of the clothing loading port;

[0017] And / or, a foreign object recognition sensor is provided at least at the second sealing area at half the height of the clothing loading port, and a foreign object recognition sensor is provided at least at the second sealing area below the lowest point of the clothing loading port.

[0018] Furthermore, a locking structure is installed on the housing and / or the door, and is used to lock the door of the closed clothing loading port; the locking structure is connected to the foreign object recognition sensor through the drum washing machine control panel, and any one or a combination of the gap between the locked door and the front side plate of the housing, the distance between the locked door and the window gasket, and the pressure is detected by the foreign object recognition sensor, and it is determined whether the door is locked successfully based on the detection value;

[0019] Preferably, a drive motor is provided at the hinge where the door is connected to the shell, and the drive motor is transmission-connected to the hinge shaft for driving the door to open or close the clothing inlet; the drive motor is communication-connected with the foreign object recognition sensor via the drum washing machine control panel, and any one or a combination of the gap between the door and the front side panel of the shell, the distance between the door and the window pad, and the pressure is detected by the foreign object recognition sensor, and whether the door is closed is determined based on the detection value.

[0020] Furthermore, the foreign object recognition sensor is exposedly arranged on the front side plate of the shell and / or the window pad, and the closed door is in direct contact with the exposed foreign object recognition sensor, and any one or a combination of the gap distance, contact pressure, and contact deformation amount at the contact point is detected.

[0021] Furthermore, the foreign body recognition sensor is:

[0022] A force-sensitive resistor pressure sensor detects the squeezing force between the front side panel of the housing and the door, and / or between the door and the window pad;

[0023] A thin-film pressure sensor detects the squeezing force between the front side panel of the housing and the door, and / or between the door and the window gasket;

[0024] A magnetic field induction distance sensor uses a magnet to detect the gap distance between the front side plate of the housing and the machine door, and / or between the machine door and the window pad;

[0025] The light-sensitive distance sensor uses changes in light intensity to detect any one or a combination of the gap distances between the front side plate of the housing and the machine door, and / or between the machine door and the window pad.

[0026] Another object of the present invention is to provide a control method for any of the above-mentioned drum washing machines, comprising:

[0027] The foreign body recognition sensor detects any one or a combination of the gap distance, contact extrusion force, and extrusion deformation between the closed machine door and the front side plate of the housing, and / or between the closed machine door and the window gasket;

[0028] When the detection value reaches the set value A, it is determined that there is a foreign object at the clothing inlet being clamped by the closed door;

[0029] When the detection value does not reach the set value A, it is determined that there is no clothing clamped by the closed door at the clothing inlet.

[0030] Furthermore, after the drum washing machine is turned on, the foreign object recognition sensor performs detection, and when the detection value reaches the closing setting value A1, it is determined that the machine door is in the closed position;

[0031] After determining that the machine door is in the closed position, the foreign object recognition sensor performs detection, and the detection value does not reach the set value A, so it is determined that there is no foreign object clamped by the closed machine door at the clothing inlet.

[0032] Further, after determining that there is no foreign object clamped by the closed door at the clothing inlet, the door locking structure is controlled to perform a locking action;

[0033] After the door locking mechanism performs locking action, the foreign object recognition sensor performs detection;

[0034] When the detection value reaches the lock setting value A2, it is determined that the door is in a locked state;

[0035] Preferably, after the door locking structure performs a locking action, the foreign object recognition sensor performs detection, and when the detection value does not reach the locking setting value A2, the door locking structure is controlled to perform a locking action again until the detection value reaches the locking setting value A2;

[0036] Further preferably, after the door locking structure performs the locking action for a set number of n consecutive times, if the detection value of the clothing recognition sensor still does not reach the locking set value A2, an alarm reminder is issued to the user.

[0037] Furthermore, when the detection value of the foreign object recognition sensor arranged on the front side panel of the washing machine housing and / or the window pad exceeds the initial set value, it is determined that there is a foreign object at the clothing inlet, and an alarm signal is sent to the user, prompting the user not to close the door.

[0038] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0039] By setting a foreign object recognition sensor at the clothing inlet, it is possible to prevent the clothes in the drum from being caught and damaged by the door during the operation of the washing machine, thereby achieving a significant technical progress in accurately detecting foreign objects at the clothing inlet of the washing machine.

[0040] At the same time, the invention has a simple structure, a concise method, and a significant effect, and is suitable for popularization and use.

[0041] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. 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 described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0043] Figure 1 It is a schematic diagram of the exploded structure of the partial assembly of the drum washing machine in an embodiment of the present invention;

[0044] Figure 2 1 is a working flow chart of the drum washing machine in an embodiment of the present invention.

[0045] Description of main components:

[0046] 1. Front side panel; 101. Clothes loading port; 102. First sealing area; 2. Door; 3. Window pad; 301. Second sealing area; 4. Foreign object recognition sensor.

[0047] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0048] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0049] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] like Figure 1As shown, an embodiment of the present invention introduces a drum washing machine, comprising: a shell, the front side of the shell is composed of a front side plate 1, and a clothing loading port 101 is provided on the front side plate 1; an outer drum is installed in the shell, and an inner drum is coaxially mounted in the outer drum; the outer drum opening and the inner drum opening are both opened toward the front side and are relatively coaxially connected with the clothing loading port 102, and a circle of annular window gasket 3 is connected between the outer drum opening and the shell front side plate 1, and the two ends of the window gasket 3 are respectively sealed and connected to the outer drum opening and the shell front side plate 1 outside the clothing loading port 101, so as to form a channel connecting the inside of the inner drum with the outside for users to take and put clothes; a machine door 2 is installed on the outer side of the shell front side plate 1 and can be turned outward around a vertical hinge, and the machine door 2 rotates around the vertical hinge axis to open and close the clothing loading port 101 accordingly. The middle part of the machine door 2 has a protruding portion protruding toward the rear side, and the protruding portion is generally composed of a glass basin; after the machine door 2 is closed, the protruding portion of the machine door 2 extends into the window gasket 3 from the clothing inlet 101, and the outer peripheral wall of the protruding portion is in sealing contact with the inner peripheral side of the window gasket 3, thereby achieving the effect of sealing the outer drum mouth after the machine door 2 is closed and preventing the washing water in the outer drum from flowing out from the mouth; at the same time, in order to further improve the sealing performance of the outer drum mouth after the machine door 2 is closed, a circle of annular sealing portions can be provided on the outer peripheral portion of the rear side of the machine door 2, which is in sealing contact with the front side plate 1 around the clothing inlet, so that the annular sealing portion and the front side plate 1 are in sealing contact after the machine door is closed. In order to improve the sealing performance, at least one circle of sealing rings can be laid at the annular sealing portion.

[0052] In an embodiment of the present invention, a foreign object recognition sensor 4 is further provided on the drum washing machine. The foreign object recognition sensor 4 is arranged between the front side plate 1 of the shell and the machine door 2, and / or between the machine door 2 and the window pad 3, so as to detect whether there is a foreign object clamped by the closed machine door 2 at the clothing inlet 101, so as to prevent the clothing in the drum from being clamped by the machine door 2 and damaged during the operation of the washing machine, thereby achieving a significant technical progress in accurately detecting foreign objects at the clothing inlet 101 of the washing machine.

[0053] In an embodiment of the present invention, the foreign object recognition sensor 4 is arranged on the front side plate 1 of the shell to detect any one or a combination of the gap distance, pressure, and extrusion deformation between the shell and the machine door 2; and / or, the foreign object recognition sensor 4 is arranged on the window pad 3 to detect any one or a combination of the gap distance, pressure, and extrusion deformation between the window pad 3 and the machine door 2.

[0054] In the embodiment of the present invention, since the washing water in the outer drum is generally located at the lower part of the drum, in order to prevent the washing water from flowing out of the drum opening, the machine door 2 needs to seal at least the lower part of the clothing inlet 101 when it is closed. Therefore, the machine door 2 needs to be in sealing contact with at least the housing front side plate 1 and / or the window gasket 3 corresponding to the closed lower half of the circular clothing inlet 102; the details are as follows:

[0055] A first sealing area is provided at the peripheral area of ​​the lower edge of the clothing inlet 101 of the front side plate 1 of the shell, which is in relative sealing contact with the rear side wall of the closed door 2, and at least one foreign object recognition sensor 4 is provided at the first sealing area 102; and / or, the inner peripheral side of at least the lower half of the annular window pad 3 is a second sealing area 301 which is in relative sealing contact with the outer peripheral wall of the closed door 2, and at least one foreign object recognition sensor 4 is provided at the second sealing area 301.

[0056] In an embodiment of the present invention, the first sealing area 102 is provided with a plurality of foreign object recognition sensors 4, and each foreign object recognition sensor 4 is installed on the front side plate 1 of the shell and is arranged at intervals along the circumferential direction of the clothing inlet 101; and / or, the second sealing area 301 is provided with a plurality of foreign object recognition sensors 4, and each foreign object recognition sensor 4 is installed on the window pad 3 and is arranged at intervals along the circumferential direction of the clothing inlet 101.

[0057] Preferably, a foreign object recognition sensor 4 is provided at least in the first sealing area 102 at half the height of the clothing inlet 101, and a foreign object recognition sensor 4 is provided at least in the first sealing area 102 below the lowest point of the clothing inlet 101; and / or, a foreign object recognition sensor 4 is provided at least in the second sealing area 301 at half the height of the clothing inlet 101, and a foreign object recognition sensor 4 is provided at least in the second sealing area 301 below the lowest point of the clothing inlet 101.

[0058] Further preferably, at a first sealed area 102 with a high coverage corresponding to the lower half of the clothing inlet 101, a plurality of foreign object recognition sensors 4 are arranged at intervals along the circumferential direction of the clothing inlet 101, and each foreign object recognition sensor 4 respectively performs foreign object detection on the installed part, and then performs a comprehensive foreign object detection on the junction between the machine door 2 and the front side panel 1 of the shell, thereby improving the accuracy of foreign object detection; and / or at a second sealed area 301 with a high coverage corresponding to the lower half of the clothing inlet 101, a plurality of foreign object recognition sensors 4 are arranged at intervals along the circumferential direction of the clothing inlet 101, and each foreign object recognition sensor 4 respectively performs foreign object detection on the installed part, and then performs a comprehensive foreign object detection on the junction between the machine door 2 and the window pad 3, thereby improving the accuracy of foreign object detection.

[0059] In an embodiment of the present invention, a locking structure is installed on the shell and / or the door 2, which is used to lock the door 2 with the clothing loading port 101 closed; the locking structure is communicated with the foreign object recognition sensor 4 via the control panel of the drum washing machine, and any one or a combination of the distance, pressure, and deformation of the gap between the locked door 2 and the front side panel 1 of the shell, and the gap between the locked door 2 and the window pad 3 is detected by the foreign object recognition sensor 4, and whether the door 2 is locked successfully is determined based on the detection value. In an embodiment of the present invention, the locking structure can be a washing machine door lock structure of any existing structure, the locking structure includes a retractable lock tongue installed on the machine door 2 / shell, and a lock hook is provided at a corresponding position on the shell / machine door 2, so that when the machine door 2 rotates to a closed position to close the clothing loading port 101, the lock tongue is correspondingly inserted into the lock hook to realize the relative locking of the machine door 2 and the shell; preferably, in order to realize automatic locking and unlocking of the washing machine, a driving structure such as a driving motor and a retractable pressure rod can be installed on the machine door 2 / shell, and the driving structure installs the lock tongue on the machine door 2 / shell, and the action state of the driving structure is used to correspondingly push the lock tongue to extend to lock the machine door 2, or retract to unlock the machine door 2; the driving structure of the locking structure of the machine door 2 is connected to the foreign object recognition sensor 4 through the control panel of the drum washing machine, and any one or a combination of the distance, pressure, and deformation of the gap between the machine door 2 and the front side plate 1 of the shell and the gap between the door 2 and the window pad 3 is detected by the foreign object recognition sensor 4, and it is determined whether the locking structure locks the machine door 2 based on the detection value.

[0060] Preferably, in the embodiment of the present invention, a driving motor is provided at the hinge where the door 2 is connected to the shell, and the driving motor is transmission-connected to the hinge shaft for driving the door 2 to open or close the clothing delivery port 101; the driving motor is communication-connected with the foreign object recognition sensor 4 via the control panel of the drum washing machine, and any one or a combination of the distance, pressure, and deformation amount of the gap between the door 2 and the front side panel 1 of the shell and the gap between the door 2 and the window pad 3 is detected by the foreign object recognition sensor 4, and whether the door 2 is closed is determined based on the detection value.

[0061] In the embodiment of the present invention, the foreign body recognition sensor 4 can be any existing detection mechanism that can detect any one or a combination of the gap distance, pressure, and extrusion deformation between two different components, for example, as follows: The foreign body recognition sensor is,

[0062] A force-sensitive resistor pressure sensor detects the squeezing force between the front side plate 1 of the housing and the machine door 2, and / or between the machine door 2 and the window pad 3; it comprises: a force-sensitive resistor sheet, arranged on the front side plate 1 of the housing, and / or on the window pad 3, to detect the squeezing force when in contact with the closed machine door 2;

[0063] Alternatively, a thin film pressure sensor detects the squeezing force between the front side plate 1 of the housing and the machine door 2, and / or between the machine door 2 and the window gasket 3; it comprises: a thin film pressure detection sheet, arranged on the front side plate 1 of the housing, and / or on the window gasket 3, to detect the squeezing force when in contact with the closed machine door 2;

[0064] Alternatively, a magnetic field induction distance sensor uses a magnet to detect the gap distance between the front side plate 1 of the shell and the machine door 2, and / or between the machine door 2 and the window pad 3; it includes: a magnetic member arranged on the machine door 2, a magnetic force detection member arranged on the front side plate 1 of the shell, and / or on the window pad 3, the magnetic force detection member detects the magnetic force of the magnetic member, and then the relative position of the machine door 2 is obtained from the detection value, thereby converting the gap distance between the machine door 2 and the window pad 3, or the front side plate 1 of the shell;

[0065] Alternatively, a light-sensitive distance sensor uses changes in light intensity to detect any one or a combination of the gap distances between the front side plate 1 of the shell and the machine door 2, and / or between the machine door 2 and the window pad 3; it includes: a light-transmitting portion arranged on the machine door 2, a light detection element arranged on the front side plate 1 of the shell, and / or on the window pad 3, to detect the intensity of the transmitted light, and then derive the relative position of the machine door 2 from the detection value, thereby converting the gap distance between the machine door 2 and the window pad 3, or the front side plate 1 of the shell.

[0066] The present invention also introduces a control method applied to the above drum washing machine, which comprises:

[0067] The foreign body recognition sensor detects any one or a combination of the gap distance, contact extrusion force, and extrusion deformation between the closed machine door and the front side plate of the housing, and / or between the closed machine door and the window gasket;

[0068] When the detection value reaches the set value A, it is determined that there is a foreign object at the clothing inlet being clamped by the closed door;

[0069] When the detection value does not reach the set value A, it is determined that there is no foreign object clamped by the closed door at the clothing inlet.

[0070] In an embodiment of the present invention, after determining that a foreign object is clamped by a closed door at the clothing inlet, the washing machine issues an alarm prompt to remind the user that there is a foreign object at the clothing inlet, and controls the washing machine to stop executing subsequent work procedures; preferably, the alarm prompt includes but is not limited to the following methods: the washing machine issues an alarm prompt sound, the washing machine displays an alarm prompt information, the washing machine pushes an alarm information to the user's mobile terminal, etc.

[0071] At the same time, in an embodiment of the present invention, after determining that there is no foreign object clamped by the closed door at the clothing inlet, the washing machine starts to execute subsequent working procedures; at the same time, if the door locking structure of the washing machine is passively triggered, the locking structure can be driven to perform a locking action and lock the closed door after the washing machine determines that there is no foreign object clamped by the closed door at the clothing inlet, so as to prevent the locking action from being triggered first and damaging the clothes; preferably, the working procedures include but are not limited to the following, washing program, rinsing program, drying program, disinfection program, etc.

[0072] In the embodiment of the present invention, after the drum washing machine is turned on, the foreign object recognition sensor performs detection, and when the detection value reaches the closing setting value A1, it is determined that the machine door is in the closed position;

[0073] After determining that the machine door is in the closed position, the foreign object recognition sensor performs detection, and the detection value does not reach the set value A, so it is determined that there is no foreign object clamped by the closed machine door at the clothing inlet.

[0074] Through the above-mentioned settings, the position of the machine door is detected by utilizing the foreign object recognition sensor, thereby achieving the function of door position detection while having the function of foreign object detection, which greatly enhances the significant technical progress of the diversified functions of a single installed sensor.

[0075] In the embodiment of the present invention, after determining that there is no foreign object clamped by the closed door at the clothing inlet, the door locking structure is controlled to perform a locking action;

[0076] After the door locking mechanism performs locking action, the foreign object recognition sensor performs detection;

[0077] When the detection value reaches the lock setting value A2, it is determined that the door is in a locked state.

[0078] Through the above-mentioned setting, the foreign object recognition sensor is used to detect whether the machine door is locked, thereby achieving the function of the added foreign object recognition sensor having the function of foreign object detection as well as the function of door lock and unlock detection, further enriching the function of the added foreign object recognition sensor and improving the automation and intelligence level of the washing machine.

[0079] Preferably, in an embodiment of the present invention, after the door locking structure performs a locking action, the foreign object recognition sensor performs detection. When the detection value does not reach the locking setting value A2, the door locking structure is controlled to perform a locking action again until the detection value reaches the locking setting value A2, to ensure that the closed door is locked and then the washing machine is controlled to execute subsequent working procedures, to avoid the situation where the washing machine is started without locking the door.

[0080] The above-mentioned setting value A, closing setting value A1, and locking setting value A2 are all preset setting ranges or setting values ​​of the washing machine, and the above-mentioned setting values ​​can be specifically revised according to different models and different usage methods of the washing machine; at the same time, they can also be revised again according to different usage habits and different usage conditions of users.

[0081] Further preferably, in an embodiment of the present invention, after the door locking structure performs the locking action for a set number of n consecutive times, when the detection value of the clothing recognition sensor still does not reach the locking set value, an alarm reminder is issued to the user; preferably, the alarm reminder includes but is not limited to the following methods: the washing machine issues an alarm prompt sound, the washing machine displays an alarm prompt information, the washing machine pushes an alarm information to the user's mobile terminal, etc.

[0082] In the embodiment of the present invention, the control method of the drum washing machine can also be specifically as follows:

[0083] The following procedures can be performed at any time before, during or after the washing machine executes the working procedure;

[0084] When the detection value of the foreign object recognition sensor arranged on the front side plate of the washing machine housing and / or the window pad exceeds the initial set value, it is determined that there is a foreign object at the clothing inlet, and an alarm prompt signal is sent to the user, prompting the user not to close the door; preferably, after determining that there is a foreign object at the clothing inlet, the washing machine suspends the execution of subsequent working procedures, and stops the execution of the automatic closing action and the automatic locking action of the door.

[0085] like Figure 2 As shown, the specific working process of the drum washing machine of the present invention is as follows:

[0086] Step S1. Turn on the washing machine;

[0087] Step S2. Detect whether the washing machine door is in the closed position; if so, execute step S3; if not, execute step S21;

[0088] Step S21. Prompt the user to manually close the door; or, drive the door to automatically rotate to a closed position;

[0089] Step S3. The foreign object recognition sensor works to detect whether there is a foreign object at the clothing inlet that is clamped by the closed door; if so, execute step S31; if not, execute step S4;

[0090] Step S31. Send a foreign object clamping reminder signal to the user; and the foreign object recognition sensor continues to work until it detects that there is no foreign object clamped by the closed door at the clothing inlet, and then executes step S4;

[0091] Step S4. Control the door locking structure to perform the locking action, and after determining that the door is locked, execute step S5;

[0092] Step S5. Unlock the washing machine start command; control the washing machine to start running according to the working program selected by the user or automatically selected.

[0093] In the above step S4, the foreign object recognition sensor continues to work, and after the detection value reaches the lock setting value A2, it is determined that the door is locked and the subsequent step S5 is executed.

[0094] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A drum washing machine, comprising: The housing has a clothing loading port at the front side; The door is mounted on the front side panel of the housing corresponding to the opening and closing of the clothing loading port; A circle of window pads is installed at the clothing inlet of the shell, which is used to seal with the closed door and correspond to the clothing inlet; Features: It also includes a foreign object recognition sensor, which is arranged between the front side plate of the shell and the machine door, and / or between the machine door and the window pad, to detect whether there is a foreign object clamped by the closed machine door at the clothing inlet.

2. A drum washing machine according to claim 1, characterized in that: The foreign body recognition sensor is arranged on the front side plate of the shell, and detects any one or a combination of the gap distance, pressure, and extrusion deformation between the shell and the door; And / or, the foreign object recognition sensor is arranged on the window gasket to detect any one or a combination of the gap distance, pressure, and extrusion deformation between the window gasket and the door.

3. A drum washing machine according to claim 2, characterized in that: A sealing area is provided at the peripheral area of ​​the lower edge of the clothing loading port of the front side plate of the housing, which is in sealing contact with the rear side wall of the closed door, and at least one foreign body recognition sensor is provided at the first sealing area; And / or, the inner peripheral side of at least the lower half of the annular window gasket is a sealing area in relatively sealing contact with the outer peripheral wall of the closed door, and at least one foreign object recognition sensor is provided at the second sealing area.

4. A drum washing machine according to claim 3, characterized in that: The first sealing area is provided with a plurality of foreign object recognition sensors, each of which is arranged at intervals along the circumferential direction of the clothing loading port and is installed on the front side plate of the housing; And / or, the second sealing area is provided with a plurality of foreign object recognition sensors, and the foreign object recognition sensors are arranged at intervals along the circumferential direction of the clothing loading port and installed on the window pad; Preferably, a foreign object recognition sensor is provided at least at the first sealing area at half the height of the clothing loading port, and at least at the first sealing area below the lowest point of the clothing loading port; And / or, a foreign object recognition sensor is provided at least at the second sealing area at half the height of the clothing loading port, and a foreign object recognition sensor is provided at least at the second sealing area below the lowest point of the clothing loading port.

5. A drum washing machine according to any one of claims 1 to 4, characterized in that: A locking structure is installed on the housing and / or the door, and is used to lock the door of the closed clothing loading port; the locking structure is connected to the foreign object recognition sensor through the drum washing machine control panel, and any one or a combination of the gap between the locked door and the front side plate of the housing, the distance between the locked door and the window gasket, and the pressure is detected by the foreign object recognition sensor, and it is determined whether the door is locked successfully based on the detection value; Preferably, a drive motor is provided at the hinge where the door is connected to the shell, and the drive motor is transmission-connected to the hinge shaft for driving the door to open or close the clothing inlet; the drive motor is communication-connected with the foreign object recognition sensor via the drum washing machine control panel, and any one or a combination of the gap between the door and the front side panel of the shell, the distance between the door and the window pad, and the pressure is detected by the foreign object recognition sensor, and whether the door is closed is determined based on the detection value.

6. A drum washing machine according to any one of claims 1 to 5, characterized in that: The foreign body recognition sensor is: A force-sensitive resistor pressure sensor detects the squeezing force between the front side panel of the housing and the door, and / or between the door and the window pad; A thin-film pressure sensor detects the squeezing force between the front side panel of the housing and the door, and / or between the door and the window pad; A magnetic field induction distance sensor uses a magnet to detect the gap distance between the front side plate of the housing and the machine door, and / or between the machine door and the window pad; The light-sensitive distance sensor uses changes in light intensity to detect any one or a combination of the gap distances between the front side plate of the housing and the machine door, and / or between the machine door and the window pad.

7. A control method for a drum washing machine according to any one of claims 1 to 6, characterized in that: The foreign body recognition sensor detects any one or a combination of the gap distance, contact extrusion force, and extrusion deformation between the closed machine door and the front side plate of the housing, and / or between the closed machine door and the window gasket; When the detection value reaches the set value A, it is determined that there is a foreign object at the clothing inlet being clamped by the closed door; When the detection value does not reach the set value A, it is determined that there is no clothing clamped by the closed door at the clothing inlet.

8. A method for controlling a drum washing machine according to claim 7, characterized in that: After the drum washing machine is turned on, the foreign object recognition sensor performs detection. When the detection value reaches the closing setting value A1, it is determined that the machine door is in the closed position; After determining that the machine door is in the closed position, the foreign object recognition sensor performs detection, and the detection value does not reach the set value A, so it is determined that there is no foreign object clamped by the closed machine door at the clothing inlet.

9. A method for controlling a drum washing machine according to claim 8, characterized in that: After determining that there is no foreign object clamped by the closed door at the clothing inlet, controlling the door locking structure to perform a locking action; After the door locking mechanism performs locking action, the foreign object recognition sensor performs detection; When the detection value reaches the lock setting value A2, it is determined that the door is in a locked state; Preferably, after the door locking structure performs a locking action, the foreign object recognition sensor performs detection, and when the detection value does not reach the locking setting value A2, the door locking structure is controlled to perform a locking action again until the detection value reaches the locking setting value A2; Further preferably, after the door locking structure performs the locking action for a set number of n consecutive times, if the detection value of the clothing recognition sensor still does not reach the locking set value A2, an alarm is issued to the user.

10. A method for controlling a drum washing machine according to any one of claims 7 to 9, characterized in that: When the detection value of the foreign object recognition sensor arranged on the front side plate of the washing machine housing and / or the window pad exceeds the initial set value, it is determined that there is a foreign object at the clothing loading port, and an alarm signal is sent to the user, prompting the user not to close the machine door.

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