Drum washing machine and control method thereof

Abstract

The present invention discloses a drum washing machine, comprising a housing and an outer drum arranged in the housing, a window gasket is arranged between the housing and the front flange of the outer drum, and a detection device is arranged on the window gasket, the detection device emits and receives feedback gratings, and uses the received feedback gratings to determine whether it is blocked. In the present invention, the detection device uses the received feedback gratings to determine whether it is blocked, and further determines whether the clothes are clamped by the window gasket, blocking the detection device, affecting the occurrence of the feedback grating phenomenon received by the detection device, thereby reminding the user to handle it in time to avoid friction between the clothes and the window gasket, causing damage to the clothes and the window gasket, or generating loud noise, or even the washing machine cannot operate normally. The present invention also discloses a control method applied to the above-mentioned drum washing machine.

Description

Technical Field

[0001] The present invention belongs to the technical field of household appliances, and in particular, relates to a drum washing machine and a control method thereof. Background Art

[0002] A washing machine is a household appliance that removes various pollutants attached to clothes by the friction of the water flow generated by stirring and rotating water, detergent and clothes and the impact exerted on the laundry. According to their different washing principles, they are generally divided into pulsator washing machines and drum washing machines. Pulsator washing machines wash clothes by operating the water flow generated by the pulsator in the washing tub, while drum washing machines wash clothes by the vertical fall of clothes caused by the rotation of the drum.

[0003] At present, the door of the drum washing machine is sealed in the observation window of the washing machine, and a rubber window gasket (or door seal) is used to connect the washing machine shell and the outer drum of the washing machine to prevent the washing water from overflowing. The cooperation between the window gasket and the outer drum can effectively eliminate the impact damage caused by the vibration of the outer drum to the washing machine. In order to prevent the friction between the inner drum and the window gasket installed on the outer drum from affecting the normal rotation of the inner drum, the window gasket has a gap. During the operation of the drum washing machine, there may be clothes caught in the gap of the window gasket. Once the clothes are caught and rotate with the inner drum, the clothes and the window gasket will rub against each other, which will not only damage the clothes and the window gasket, but also generate loud noise, and even cause the washing machine to fail to operate normally.

[0004] A Chinese patent application with application number 201810241908.X discloses a door seal assembly and a drum washing machine, wherein the door seal assembly includes an inner door seal and an outer door seal respectively connected to the outer drum of the washing machine, the inner door seal is located between the outer door seal and the outer drum, and a set gap is provided between the inner door seal and the inner drum of the washing machine, the inner door seal includes an elastic buffer ring and a support ring, the elastic buffer ring is coated on the outer side of the support ring, because the support ring is provided in the door seal assembly, the support ring plays a supporting role for the elastic buffer ring, so the deformation range of the elastic buffer ring can be reduced, so that the change in the gap between the inner drum and the door seal assembly is reduced, thereby avoiding clothes from being caught in the gap between the inner drum and the door seal assembly, but for small pieces of clothing, such as handkerchiefs or socks or baby clothes, it is still impossible to avoid being caught in the window pad during the operation of the drum washing machine.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a drum washing machine and a control method thereof, so as to achieve the purpose of effectively detecting whether clothes are clamped by a window pad.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] A drum washing machine comprises a box body and an outer drum arranged in the box body, a window pad is arranged between the box body and the front flange of the outer drum, and also comprises a detection device arranged on the window pad, the detection device emits and receives feedback gratings, and uses the received feedback gratings to determine whether it is blocked.

[0009] Furthermore, an opening for dropping clothes is provided on the front flange of the outer tube, the window pad is a tubular structure, one end of the window pad is connected to the opening of the outer tube; a pleated portion is provided on the window pad, the pleated portion forms a groove with an open opening, the open opening of the groove is connected to the opening of the outer tube, and the detection device is arranged on the pleated portion and emits a grating toward the inside of the groove.

[0010] Furthermore, the fold portion extends along the window gasket of the cylindrical structure and is arranged in a ring shape, and at least one detection device is arranged at the lower part of the ring-shaped fold portion; preferably, a plurality of detection devices are arranged at intervals along the circumference of the ring-shaped fold portion.

[0011] Furthermore, the pleated portion includes a first wall and a second wall which are stacked at intervals, one end of the first wall and the second wall corresponds to and is connected, and the gap between the first wall and the second wall constitutes a groove; the other ends of the first wall and the second wall are spaced apart to form an opening of the groove; the detection device is arranged at the open end of the first wall, and the detection device emits a grating toward the open end of the second wall.

[0012] Furthermore, the detection device is an infrared detection device, which includes an infrared transmitter and an infrared receiver, and the infrared receiver receives infrared rays reflected after being emitted by the infrared transmitter.

[0013] A drum washing machine control method is applied to any of the drum washing machines described above. During the washing process, it is determined in real time whether a detection device is blocked. If a detection device is blocked for a time ≥ T1, it is determined that a window pad is clamped by clothing and the detection device is blocked.

[0014] Furthermore, during the washing process, it is detected in real time whether the light emitted by the detection device is received by the detection device within a specified time after being emitted. If not, it is determined that the detection device is blocked, and the blocked detection device starts timing.

[0015] Furthermore, if any detection device is blocked for a time ≥ T1, it is determined that the degree of clothing trapped in the window mat is slight, and the detection device issues an alarm prompt to remind the user to cancel the alarm prompt or remove the clothing trapped in the window mat.

[0016] Furthermore, if multiple detection devices are blocked for a time ≥ T1 at the same time, it is determined that the degree of clothing trapped in the window mat is serious, the detection device issues an alarm, and the washing machine program automatically stops running to remind the user to remove the clothing trapped in the window mat.

[0017] Further, the method specifically includes the following steps:

[0018] S1: Start the washing program and the detection device, and determine in real time whether the detection device is blocked;

[0019] S2: If it is detected that one or more detection devices are blocked, the detection devices start timing respectively;

[0020] S3: If any detection device is blocked for a time ≥ T1, the detection device issues an alarm and executes step S4 or S5; if multiple detection devices are blocked for a time ≥ T1 at the same time, the detection device issues an alarm and executes step S6; if all detection devices are blocked for a time < T1, continue to execute the washing program;

[0021] S4: Pause the washing process and take out the clothes stuck in the window mat;

[0022] S5: cancel the alarm prompt and continue the washing process;

[0023] S6: The washing machine program automatically stops running, reminding the user to take out the clothes caught in the window mat.

[0024] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0025] 1. A detection device is set on the window mat. The detection device uses the received feedback grating to determine whether it is blocked, and further determines whether the clothes are clamped by the window mat and block the detection device, affecting the detection device to receive the feedback grating phenomenon. It can remind the user to deal with it in time to avoid damage caused by friction between the clothes and the window mat, and even cause the washing machine to fail to operate normally.

[0026] 2. When the time when multiple detection devices are blocked is less than T1, the detection device will not send an alarm prompt to the user, which can more accurately and efficiently determine whether the window mat is blocked by clothing and avoid misjudgment due to temporary blocking of the detection device by water flow or clothing.

[0027] 3. When any detection device is blocked for a period of time ≥ T1, the detection device sends an alarm to the user, especially when multiple infrared detection devices send alarms simultaneously or successively, which can not only remind the user whether to pause the washing process in time, but also allow the user to judge the severity of the clothes being clamped by the window pad.

[0028] 4. By setting a variety of modes for removing stuck clothes, users can choose whether to pause the current program to take out clothes or continue washing according to their habits. On the premise of ensuring the normal operation of the drum washing machine, it can achieve more humane control of the drum washing machine operation program, thereby improving the user experience.

[0029] 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

[0030] 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:

[0031] Figure 1 is a schematic structural diagram of a drum washing machine in an open state of the door body according to an embodiment of the present invention;

[0032] Figure 2 is a schematic diagram of the side structure of a drum washing machine according to an embodiment of the present invention;

[0033] Figure 3 is a schematic diagram of a window gasket structure in an embodiment of the present invention;

[0034] Figure 4 is a partial cross-sectional view of a window gasket structure according to an embodiment of the present invention;

[0035] Figure 5 is a schematic structural diagram of an infrared detection device in an embodiment of the present invention;

[0036] Figure 6 It is a flow chart of a drum washing machine control method in an embodiment of the present invention.

[0037] In the figure: 1, window pad; 11, pleated part; 111, first wall; 112, second wall; 12, smooth part; 13, groove; 2, box body; 3, outer cylinder; 31, front flange; 4, inner cylinder; 5, clothing loading port; 6, door body; 61, sealing part; 62, first boss; 63, second boss; 7, infrared detection device; 71, infrared transmitter; 72, infrared receiver; 73, timer; 74, alarm controller; 75, protective cover.

[0038] 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

[0039] 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.

[0040] 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.

[0041] 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.

[0042] Embodiment 1

[0043] like Figure 1 and Figure 2 As shown, a double-drum washing machine is provided in an embodiment of the present invention, including a housing 2, an outer drum 3 and an inner drum 4 arranged in sequence from outside to inside, a window pad 1 is arranged between the housing 2 and the front flange 31 of the outer drum 3, and a detection device is also provided on the window pad 1, the detection device emits and receives feedback gratings, and uses the received feedback gratings to determine whether it is blocked. The detection device can not only emit gratings to illuminate the window pad 1 or the surrounding environment of the window pad 1, but also receive feedback gratings. The detection device uses the received feedback gratings to determine whether it is blocked, so as to determine whether there is an object on the window pad 1 blocking the detection device, affecting the detection device to receive the feedback grating, especially when the window pad 1 is clamped by clothes to block the detection device.

[0044] like Figure 2 As shown, in this embodiment, the front flange 31 of the outer drum 3 has an opening for putting clothes, the box body 2 includes a front side plate provided with a clothes putting opening 5, and the front side plate is provided with a door body 6 for opening or closing the clothes putting opening 5. The window pad 1 is a tubular structure, and one end of the window pad 1 is connected to the opening of the outer drum 3; the window pad 1 is provided with a pleated portion 11 sealed with the front flange 31 of the outer drum 3 and a smooth portion 13 sealed with the front side plate of the box body 2, the pleated portion 11 surrounds a groove 13 with an opening, and the opening of the groove 13 is connected to the opening of the outer drum 3, and the detection device is arranged on the pleated portion 11 and emits a grating toward the inside of the groove 13. The open end of the groove 13 forms a gap, and during the washing process, the clothes are easily brought into the groove 13 through the gap to block the detection device, especially small clothes, such as handkerchiefs, socks or baby clothes, are clamped in the window pad 1, and even when the inner drum 4 rotates at a high speed, the small clothes cannot be thrown out from the window pad 1.

[0045] like Figure 3 and Figure 4 As shown, in this embodiment, the pleated portion 11 extends along the tubular window gasket 1 in a circle and is arranged in an annular shape, and at least one detection device is arranged at the lower part of the annular pleated portion 11; preferably, a plurality of detection devices are arranged at intervals along the circumference of the annular pleated portion 11. Due to the vibration of the washing machine and the gravity of the clothes themselves, during the washing process, the clothes are easy to fall into the lower part of the annular pleated portion 11 of the window gasket 1. By arranging a plurality of detection devices at intervals along the circumference of the annular pleated portion 11, it is possible to more comprehensively monitor the inside of the groove 13 in real time, and determine whether there is any clothes entering the groove 13 through the gap formed by the open end of the groove 13, avoiding the occurrence of monitoring blind spots, resulting in noise generated by friction between the clothes and the window gasket 1, or wear and tear of the clothes and the window gasket 1, and even affecting the normal progress of the entire washing process.

[0046] like Figure 3 and Figure 4 As shown, in this embodiment, the folded portion 11 includes a first wall 111 and a second wall 112 which are stacked at intervals, one end of the first wall 111 and the second wall 112 correspond to and are connected, and a gap between the first wall 111 and the second wall 112 constitutes a groove 13; the other ends of the first wall 111 and the second wall 112 are spaced apart to form an opening of the groove 13; a detection device is arranged at the open end of the first wall 111, and the detection device emits a grating toward the open end of the second wall 112; preferably, the open ends of the first wall 111 and the second wall 112 are connected to the main body of the annular window gasket 1; further preferably, the first wall 111 and the second wall 112 are an integral part with the main body of the window gasket 1; further preferably, the first wall 111 and the second wall 112 which are stacked at intervals extend protrudingly toward the outer peripheral side of the cylindrical window gasket 1. The detection device is arranged at the open end of the first wall 111 to emit a grating toward the open end of the second wall 112. The detection device uses the received feedback grating to determine whether it is blocked, and thus can determine in real time whether there is any clothing blocking the open end of the groove 13 or entering the groove 13 through the gap formed by the open end of the groove 13 to block the detection device. In particular, small pieces of clothing can easily enter the groove 13 through the gap during the washing process and block the detection device.

[0047] like Figure 1 and Figure 2 As shown, in this embodiment, the window gasket 1 is arranged between the box body 2 and the outer drum 3, the window gasket 1 is a tubular structure, the front flange 31 of the outer drum 3 is provided with an opening for putting clothes, the front side plate of the box body 2 is provided with a clothing putting port 5, one end of the window gasket 1 is sealed and connected to the outer periphery of the opening of the outer drum 3, and the other end of the window gasket 1 is sealed and connected to the outer periphery of the clothing putting port 5. The window gasket 1 connects the opening of the outer drum 3 with the clothing putting port 5 on the front side plate of the box body 2 to form a closed passage, and the window gasket 1 seals the drum washing machine after the door body 6 of the drum washing machine is closed.

[0048] like Figure 1 As shown, in this embodiment, the door body 6 includes a cover portion 61 vertically arranged to cover the clothing delivery port 5, a first axially protruding boss 62 is arranged along one side of the cover portion 61, and a second axially protruding boss 63 is arranged on the protruding end surface of the first boss 62, the first boss 62 is arranged opposite to the clothing delivery port 5, and the second boss 63 is arranged opposite to the annular window pad 1. When the door body 6 closes the clothing delivery port 5, the first boss 62 extends into the clothing delivery port 5, the second boss 63 is in the annular window pad 1, and there is a gap between the open end of the groove 13 surrounded by the pleated portion 11 and the outer contour of the second boss 63. During the washing process, since the inner drum 4 rotates at a high speed and drives the clothes to rotate at a high speed, small pieces of clothing are easily thrown out of the inner drum 4 and fall on the window pad 1, and enter the groove 13 through the gap formed by the open end of the groove 13. Even when the inner drum 4 rotates at a high speed, the small pieces of clothing cannot be thrown out of the groove 13.

[0049] like Figure 5 As shown, in this embodiment, the detection device is an infrared detection device 7, which includes an infrared transmitter 71 and an infrared receiver 72. The infrared transmitter 71 can actively emit infrared rays to illuminate the window pad 1 or the environment around the window pad 1, and the infrared receiver 72 can receive infrared rays reflected by the window pad 1 or the environment around the window pad 1, so as to determine whether there is clothing blocking the infrared detection device 7 by whether the infrared rays reflected by the window pad 1 are received within a specified time.

[0050] like Figure 5 As shown, in this embodiment, the infrared detection device 7 also includes a protective cover 75, a timer 73 and an alarm controller 74. The infrared transmitter 71, the infrared receiver 72, the timer 73 and the alarm controller 74 are fully surrounded by a protective cover 75 of transparent resin, and the protective cover 75 fits tightly with the annular groove 13 to achieve waterproof protection.

[0051] Specifically, after the washing machine starts running, the infrared transmitter 71 actively transmits infrared rays, and the infrared rays reflected by the window mat 1 or the surrounding environment of the window mat 1 are received by the infrared receiver. If the infrared detection device 7 is not blocked by an object, the infrared transmitter 71 continuously transmits infrared rays, and continuously receives them by the infrared receiver 72 after being reflected by the window mat 1 or the surrounding environment of the window mat 1, and the alarm controller 74 will not issue an alarm prompt. If an object blocks the infrared rays emitted by the infrared transmitter 71, the infrared receiver 72 detects that an abnormality has occurred, and the timer 73 starts timing. If the abnormality is not eliminated within the set time, the alarm controller 74 issues an alarm prompt. The alarm prompt is issued through a buzzer, a display screen, or an APP to remind the user that small pieces of clothing have entered the window mat 1, making the washing process more intelligent and improving user favorability and stickiness.

[0052] With the drum washing machine, a detection device for irradiating the window mat 1 or the surrounding environment of the window mat 1 and receiving reflected light, in particular, an infrared detection device 7 is provided on the window mat 1 to detect in real time whether the infrared detection device 7 is blocked by an object, and then determine whether clothes are clamped by the window mat 1, in particular, clothes are clamped in the groove 13 formed by the pleated portion 11, according to the time when the infrared detection device 7 is blocked. This can realize efficient and accurate detection of whether clothes are clamped in the window mat 1, thereby avoiding wear of clothes and the window mat 1 due to friction, and even affecting the normal operation of the washing machine.

[0053] Embodiment 2

[0054] A drum washing machine control method in an embodiment of the present invention is applied to any of the above-mentioned drum washing machines. During the washing process, it is determined in real time whether the detection device is blocked. If a detection device is blocked for a time ≥ T1, it is determined that a window pad is clamped by clothes and the detection device is blocked. This method can more accurately and efficiently eliminate the situation where clothes or water flow temporarily block the detection device during the washing process, thereby determining that a window pad is clamped by clothes and the detection device is blocked.

[0055] In this embodiment, if the detection device fails to detect the light emitted by the detection device and reflected by the window mat or the environment around the window mat within the specified time, it is determined that the detection device is blocked, and the blocked one or more detection devices start timing. The time when the detection device is blocked is used to determine whether the window mat is clamped with clothes or the clothes or water flow block the detection device, thereby avoiding misjudgment that affects the normal washing process.

[0056] In this embodiment, if any detection device is blocked for a time ≥ T1, it is determined that the degree of clothes caught in the window mat is slight, and the detection device issues an alarm prompt to remind the user to cancel the alarm prompt or take out the clothes caught in the window mat. Under the premise of ensuring the normal operation of the drum washing machine, the user can humanely control the operation program of the drum washing machine according to his habits.

[0057] In this embodiment, if the time when multiple detection devices are blocked is simultaneously ≥ T1, it is determined that the degree of clothing clamped by the window pad is serious, which may cause wear of the clothing or the window pad, or affect the normal operation of the washing machine, or even cause damage to the washing machine. The detection device issues an alarm, the washing machine program automatically stops running, and reminds the user to remove the clothing clamped in the window pad.

[0058] In this embodiment, if all detection devices are blocked for a period of time less than T1, it means that the detection devices are covered by something other than clothing, especially small pieces of clothing. It may be that water flow or clothing temporarily blocks the detection devices. The abnormality of the detection devices is eliminated and the washing program continues.

[0059] Through the above-mentioned drum washing machine control method, a variety of modes for removing stuck clothes are set, and users can choose whether to pause the current program to take out clothes or continue washing according to their habits. On the premise of ensuring the normal operation of the drum washing machine, more humane control of the drum washing machine operation program can be achieved, thereby improving the user experience.

[0060] Embodiment 3

[0061] like Figure 6 As shown, a drum washing machine control method in an embodiment of the present invention comprises the following specific steps:

[0062] S1: Start the washing program and the detection device, and determine in real time whether the detection device is blocked;

[0063] S2: If it is detected that one or more detection devices are blocked, the detection devices start timing respectively;

[0064] S3: If any detection device is blocked for a time ≥ T1, the detection device issues an alarm and executes step S4 or S5; if multiple detection devices are blocked for a time ≥ T1 at the same time, the detection device issues an alarm and executes step S6; if all detection devices are blocked for a time < T1, continue to execute the washing program;

[0065] S4: Pause the washing process and take out the clothes stuck in the window mat;

[0066] S5: cancel the alarm prompt and continue the washing process;

[0067] S6: The washing machine program automatically stops running, reminding the user to take out the clothes caught in the window mat.

[0068] like Figure 6 As shown, in this embodiment, step S2 determines in real time whether any detection device is blocked. If one or more detection devices are blocked, timing starts separately to detect the blocking time. The blocking time is used to determine whether the window pad is clamped with clothes, or the clothes or water flow are blocking the detection device, so as to avoid misjudgment and affect the normal washing process.

[0069] like Figure 6As shown, in this embodiment, in step S3, when the time when any detection device is blocked is ≥ T1, it means that the degree of clothing clamped by the window pad is slight, and the user can humanely control the operation program of the drum washing machine according to habit, execute the pause washing program, take out the clothing clamped in the window pad, or cancel the alarm prompt and continue the washing program; if the time when multiple detection devices are blocked is ≥ T1 at the same time, it means that the degree of clothing clamped by the window pad is serious, which may affect the normal operation of the washing machine and even cause damage to the washing machine, so the washing machine is forced to stop running and remind the user to deal with it in time; if the time when all detection devices are blocked is less than the set time T1, it means that the detection devices are temporarily blocked by clothing or water flow, and the blocking has been released, and the washing program continues.

[0070] Through the above-mentioned drum washing machine control method, during the washing process, it is determined in real time whether the detection device is blocked. If it is detected that the detection device is blocked, the detection device starts timing. First, it is ruled out whether the detection device is temporarily blocked by clothes or water flow, and then it is further determined whether the degree of clothes clamped by the window pad is slight or serious. Therefore, under the premise of ensuring the normal operation of the drum washing machine, the operation program of the drum washing machine can be humanizedly controlled according to user habits.

[0071] 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, 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 a housing and an outer drum arranged in the housing, a window gasket is arranged between the housing and the front flange of the outer drum, characterized in that: It also includes a detection device arranged on the window pad, the detection device transmits and receives a feedback grating, and uses the received feedback grating to determine whether it is blocked; A pleated portion is provided on the window pad, and the pleated portion includes a first wall and a second wall which are stacked and spaced apart from each other, one end of the first wall and the second wall corresponds to and is connected to each other, and a gap between the first wall and the second wall forms a groove; the other ends of the first wall and the second wall are spaced apart to form an opening of the groove; a detection device is arranged at the open end of the first wall, and emits a grating toward the open end of the second wall.

2. A drum washing machine according to claim 1, characterized in that: The front flange of the outer drum is provided with an opening for putting clothes in. The window pad is a tubular structure, one end of which is connected to the opening of the outer drum. The opening of the groove is connected to the opening of the outer drum. The detection device is arranged on the folded part and emits a grating toward the inside of the groove.

3. A drum washing machine according to claim 2, characterized in that: The folded portion extends along the window gasket of the cylindrical structure and is arranged in a ring shape. At least one detection device is arranged at the lower part of the ring-shaped folded portion.

4. A drum washing machine according to claim 3, characterized in that: A plurality of detection devices are arranged at intervals along the circumference of the annular fold portion.

5. A drum washing machine according to any one of claims 1 to 4, characterized in that: The detection device is an infrared detection device, which includes an infrared transmitter and an infrared receiver. The infrared receiver receives infrared rays that are reflected after being emitted by the infrared transmitter.

6. A drum washing machine control method, applied to the drum washing machine according to any one of claims 1 to 5, characterized in that: During the laundry process, it is determined in real time whether the detection device is blocked. If the detection device is blocked for a time ≥ T1, it is determined that the window pad is clamped by clothing and blocks the detection device.

7. A drum washing machine control method according to claim 6, characterized in that: During the washing process, it is detected in real time whether the light emitted by the detection device is received by the detection device within a specified time after being emitted. If not, it is determined that the detection device is blocked, and the blocked detection device starts timing.

8. A drum washing machine control method according to claim 7, characterized in that: If any detection device is blocked for a period of time ≥ T1, it is determined that the degree of clothing trapped in the window mat is slight, and the detection device issues an alarm prompt to remind the user to cancel the alarm prompt or take out the clothing trapped in the window mat.

9. A drum washing machine control method according to claim 7, characterized in that: If multiple detection devices are blocked for a period of time ≥ T1 at the same time, it is determined that the degree of clothing trapped in the window mat is serious, and the detection device sends out an alarm prompt, and the washing machine program automatically stops running to remind the user to remove the clothing trapped in the window mat.

10. A drum washing machine control method according to any one of claims 6 to 9, characterized in that: Specifically include the following steps: S1: Start the washing program and the detection device, and determine in real time whether the detection device is blocked; S2: If it is detected that one or more detection devices are blocked, the detection devices start timing respectively; S3: If any detection device is blocked for a time ≥ T1, the detection device issues an alarm and executes step S4 or S5; if multiple detection devices are blocked for a time ≥ T1 at the same time, the detection device issues an alarm and executes step S6; if all detection devices are blocked for a time < T1, continue to execute the washing program; S4: Pause the washing process and take out the clothes stuck in the window mat; S5: cancel the alarm prompt and continue the washing process; S6: The washing machine program automatically stops running, reminding the user to take out the clothes caught in the window mat.

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