Lint removal device and control method for a washer-dryer

Abstract

The present application discloses a lint removal device and control method for a washing and drying integrated washing machine, and relates to the technical field of washing machines.The present application comprises a box body, an outer drum, a drying module and a filter assembly;the drying module comprises a drying air duct, and the drying air duct is connected with the outer drum;the filter assembly comprises a filter screen and a frame arranged on the circumferential side of the filter screen;the side wall of the drying air duct is provided with a notch matched with the frame, and the filter assembly can slide along the notch to be pulled out of or inserted into the drying air duct.The present application is simple and easy to use by setting the filter assembly, the filter assembly can be pulled out of or inserted into the drying air duct, the installation and disassembly for cleaning are facilitated, and the drying air fan can be protected from being blocked by lint.Meanwhile, the control method of the lint removal device is set, the system is reminded to check whether the lint is blocked when the system detects that the drying effect cannot be achieved for a long time, the maintenance efficiency is improved, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of washing machines, in particular to a lint removal device and control method of a washing-drying integrated washing machine. BACKGROUND

[0002] With the development of the times and the progress of science and technology, people's demand for household appliances gradually changes from function to high quality. The clothes processing equipment is one of the commonly used household appliances in daily life, and the clothes processing equipment usually includes a pulsator washing machine and a drum washing machine.

[0003] At present, the drum washing machine with drying function on the market is prone to mix the lint on the clothes in the airflow during drying, causing the lint to enter the drying duct and other difficult-to-clean parts. Due to the lack of lint removal structure, on the one hand, it is easy to produce odor. On the other hand, a large amount of lint will accumulate in the drying fan and cannot be removed, resulting in a decrease in drying wind speed and a decrease in drying efficiency, affecting the drying effect, thereby causing the drying time to be too long, the clothes to be not dried, and even the drying heating fuse to be disconnected. In serious cases, fire accidents and other safety accidents may occur.

[0004] In addition, when the drying duct fan clogging problem occurs, the only solution is to replace the drying duct assembly, which has high after-sales cost and user maintenance cost. SUMMARY

[0005] One object of the present application is to provide a lint removal device for a washing-drying integrated washing machine. The filter assembly includes a filter screen and a frame arranged on the side of the filter screen. The side wall of the drying air duct is provided with a notch matched with the frame. The filter assembly can be pulled out or inserted into the drying air duct along the notch. The filter assembly is simple to use, easy to install and clean, and can protect the drying fan from lint clogging. The problem of lint easily entering the drying duct, producing odor, and a large amount of lint accumulating in the drying fan and being difficult to remove, resulting in a decrease in drying wind speed and a decrease in drying efficiency, is solved.

[0006] Another object of the present application is to provide a control method for a lint removal device of a washing-drying integrated washing machine. By continuously detecting several times that the drying end condition is the longest drying time end, it is judged whether the clothes are dried. If the drying effect is affected, an abnormal alarm is sent in time, which is convenient for users and after-sales service personnel to troubleshoot the problem of lint clogging causing abnormal drying function. The degree of intelligence is high, the maintenance efficiency is improved, and the maintenance cost is reduced. The problem of high after-sales cost and user maintenance cost caused by lint clogging the drying duct is solved.

[0007] To solve the above technical problems, the present application is realized by the following technical scheme:

[0008] The application discloses a lint removing device and a control method of a washing and drying integrated washing machine. The device comprises a box body, an outer barrel, a drying module and a filtering assembly. The outer barrel is installed in the box body. The drying module comprises a drying air duct connected with the outer barrel. The filtering assembly comprises a filter screen and a frame arranged on the periphery of the filter screen. The filter screen is fixedly connected with the frame. The side wall of the drying air duct is provided with a notch matched with the frame. The filtering assembly can be pulled out of or inserted into the drying air duct along the notch.

[0009] According to a preferred technical scheme of the application, the drying air duct is provided with a guide structure for facilitating the pulling out and insertion of the filtering assembly.

[0010] According to a preferred technical scheme of the application, the drying air duct is provided with a guide lug fixed on the inner wall of the two sides of the notch. The frame is provided with a guide groove on the two sides. The guide lug and the guide groove are in sliding fit.

[0011] According to a preferred technical scheme of the application, the frame is fixedly connected with a handle on the side of the notch. The handle is pulled to facilitate the pushing and pulling of the filtering assembly.

[0012] According to a preferred technical scheme of the application, the drying air duct is provided with a magnetic component fixed on the inner wall of the side away from the notch. The magnetic component is magnetically connected with the frame to prevent the filtering assembly from sliding out of the drying air duct due to vibration during the operation of the washing machine.

[0013] According to a preferred technical scheme of the application, the back of the box body is provided with a window for facilitating the dismounting or mounting of the filtering assembly from the drying air duct.

[0014] The application discloses a control method of a lint removing device of a washing and drying integrated washing machine. The method comprises the following steps: S1, starting a drying program; S2, judging whether the cumulative number of a drying abnormality flag is greater than a specified number; S3, if the cumulative number of the drying abnormality flag is greater than the specified number, issuing a drying function abnormality alarm to remind a user to clean the filtering assembly and stopping the drying program; if the cumulative number of the drying abnormality flag is not greater than the specified number, controlling the drying module to start and begin drying; S4, when the drying is completed, judging whether the drying time reaches a set maximum drying time; S5, if the drying time does not reach the set maximum drying time, resetting the cumulative number of the drying abnormality flag to zero; if the drying time reaches the set maximum drying time, continuously detecting whether clothes are dried; S6, if the clothes are dried, resetting the cumulative number of the drying abnormality flag to zero; if the clothes are not dried, increasing the cumulative number of the drying abnormality flag by one and storing the number; and S7, ending the drying program.

[0015] As a preferred technical scheme of the present application, the condensate water temperature detection module is installed in the box. In S5, whether the clothes are dried is judged by detecting whether the condensate water temperature after drying is reduced to the set value. In S6, if the condensate water temperature after drying is reduced to the set value, the cumulative number of drying abnormality flags is reset to zero; if the condensate water temperature after drying is not reduced to the set value, the cumulative number of drying abnormality flags is increased by one and stored.

[0016] As a preferred technical scheme of the present application, in S2, whether the cumulative number of drying abnormality flags is greater than 3 times is judged.

[0017] The present application has the following beneficial effects:

[0018] 1. The filter assembly is simple to use, convenient to install and disassemble and clean, and can protect the drying fan from fluff blockage.

[0019] 2. The control method of the lint removal device judges whether the clothes are dried when the drying end condition is continuously detected for several times to reach the longest drying time, and issues an abnormal alarm in a timely manner if the drying effect is affected, so that the system reminds whether there is lint blockage when the system detects that the drying effect cannot be achieved for a long time, which facilitates users and after-sales service personnel to troubleshoot the problem of abnormal drying function caused by lint blockage, has high intelligent degree, improves maintenance efficiency and reduces maintenance cost.

[0020] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 It is a structure schematic diagram of the outer barrel in embodiment one and a local enlarged schematic diagram;

[0023] Figure 2 It is a structure schematic diagram of the outer barrel in embodiment one and a local enlarged schematic diagram;

[0024] Figure 3 It is a structure schematic diagram of the outer barrel in embodiment one and a local enlarged schematic diagram;

[0025] Figure 4 is a structural schematic diagram of a cabinet;

[0026] Figure 5 is a flowchart of a control method of the lint removal device in Example Two;

[0027] In the drawings, the components represented by each reference numeral are listed as follows:

[0028] 1 - cabinet, 101 - window, 2 - outer tub, 3 - drying air duct, 301 - notch, 302 - guide ridge, 4 - filter assembly, 401 - filter screen, 402 - frame, 4021 - guide groove, 403 - handle, 5 - magnetic attraction. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0030] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the indicated component or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0031] Example One

[0032] Referring to Figure 1 The present embodiment provides a lint removal device of a washing and drying integrated washing machine, which includes a drying module for delivering hot air to an outer tub 2, and the drying module includes a drying air duct 3, which is in communication with the outer tub 2. A filter assembly 4 is arranged in the drying air duct, which is used to prevent lint of clothes from being sucked into a drying fan, thereby affecting the drying effect.

[0033] Referring to Figure 2 and Figure 3As shown, the filter assembly 4 includes a filter screen 401 and a frame 402 arranged around the filter screen 401, and the filter screen 401 is welded to the frame 402. The sidewall of the drying air duct 3 is provided with a notch 301 matched with the frame 402. When the filter assembly 4 is inserted into the drying air duct 3 from the notch 301, the frame 402 located at the notch 301 can block the notch 301. The inner wall of the drying air duct 3 near the two sides of the notch 301 is fixed with a guide rib 302, and the two sides of the frame 402 are provided with a guide groove 4021, and the guide rib 302 and the guide groove 4021 are in sliding fit, so that the filter assembly 4 can be smoothly inserted or pulled out of the drying air duct. The side of the frame 402 out of the notch 301 is fixedly connected with a handle 403 for facilitating the pushing and pulling of the filter assembly.

[0034] In addition, referring to Figure 3 As shown, the inner wall of the drying air duct 3 away from the side of the notch 301 is fixed with a magnetic attraction 5, and the frame 402 is made of a magnetic metal material, such as iron and iron alloy. After the filter assembly 4 is inserted into the drying air duct 3, the magnetic attraction 5 tightly attracts the frame 402, so as to prevent the filter assembly 4 from sliding out of the drying air duct 3 from the notch 301 due to vibration during the operation of the washing machine.

[0035] Referring to Figure 4 As shown, the outer tub 2 and the drying module are both installed in the cabinet 1, and the back of the cabinet 1 is provided with a window 101, and the window is detachably provided with a baffle. The baffle is opened to facilitate the disassembly or installation of the filter assembly 4 from the drying air duct 3 through the window 101.

[0036] Embodiment Two

[0037] Based on Embodiment One, Embodiment Two provides a control method of lint removal device of a washing-drying integrated washing machine. Referring to Figure 5 As shown, the method comprises the following steps:

[0038] S1: starting a drying program;

[0039] S2: judging whether the cumulative number of drying abnormality flags is greater than 3 times;

[0040] S3: if the cumulative number of drying abnormality flags is greater than 3 times, issuing a drying function abnormality alarm to remind personnel to clean the filter assembly, and stopping the drying program; if the cumulative number of drying abnormality flags is not greater than 3 times, controlling the drying module to start and begin drying;

[0041] S4: when the drying is completed, judging whether the drying time reaches a set longest drying time;

[0042] S5: if the drying time does not reach the set longest drying time, resetting the cumulative number of drying abnormality flags to zero; if the drying time reaches the set longest drying time, continuing to detect whether the laundry is dried;

[0043] S6: If the clothes are dried, the cumulative number of drying abnormality flags is reset to zero; if the clothes are not dried, the cumulative number of drying abnormality flags is increased by one and stored;

[0044] S7: End the drying program.

[0045] In the S5, whether the clothes are dried or not is determined by detecting whether the condensate water temperature drops to the set value after drying. In the S6, if the condensate water temperature drops to the set value after drying, the cumulative number of drying abnormality flags is reset to zero; if the condensate water temperature does not drop to the set value after drying, the cumulative number of drying abnormality flags is increased by one and stored.

[0046] In addition, the cumulative number of drying abnormality flags is stored when the drying program ends and is called when the next drying program starts.

[0047] In this embodiment, for the 10 kg platform automatic drying machine type, the application of the condensate water temperature detection module to determine whether the clothes are dried is as follows:

[0048] 1. The weighing result of the clothes corresponds to the drying display time and the drying stop parameter, as shown in the following table:

[0049]

[0050] 2. Stop condition

[0051] L1: After weighing, the load interval is L1, and after drying for 30 minutes, the maximum value Tmax of waterntc is detected. After the maximum value appears, the temperature value Tmax is recorded. After Tmax appears, the real-time temperature of waterntc is monitored, and when the actual temperature drops to Tmax-12 (i.e. Tmax drops by 12) or the actual temperature reaches 51℃, the drying is stopped, and it is determined that the drying is completed.

[0052] The above stop condition is first-in-first-out. The same applies below

[0053] L2: After weighing, the load interval is L2, and after drying for 30 minutes, the maximum value Tmax of waterntc is detected. After the maximum value appears, the temperature value Tmax is recorded. After Tmax appears, the real-time temperature of waterntc is monitored, and when the actual temperature drops to Tmax-13 (i.e. Tmax drops by 13) or the actual temperature reaches 51℃, the drying is stopped, and it is determined that the drying is completed.

[0054] L3: After weighing, the load interval is L3, and after drying for 30 minutes, the maximum value Tmax of waterntc is detected. After the maximum value appears, the temperature value is recorded as Tmax. After Tmax appears, the real-time temperature of waterntc is monitored, and when the actual temperature drops to Tmax-16 (i.e., 16 degrees below Tmax); after the drying is started for 60 min, it is detected whether the actual temperature of waterntc reaches 51℃, and if so, the drying is stopped, and it is determined that the drying is completed.

[0055] L4: After weighing, the load interval is L4, and after drying for 30 minutes, the maximum value Tmax of waterntc is detected. After the maximum value appears, the temperature value is recorded as Tmax. After Tmax appears, the real-time temperature of waterntc is monitored, and when the actual temperature drops to Tmax-20 (i.e., 20 degrees below Tmax); after the drying is started for 60 min, it is detected whether the actual temperature of waterntc reaches 50℃, and if so, the drying is stopped, and it is determined that the drying is completed.

[0056] In addition, other parallel stop conditions are:

[0057] After Tmax appears, it is detected whether AT is greater than 10℃, and if so, the waterntc is started to be timed, and whether the change amount is ≤1℃ within 10 min, or ≤2℃ within 15 min, or ≤3℃ within 20 min, and if one of them is true, it is determined that the drying is completed.

[0058] In the description of the present specification, the description referring to the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present specification. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited only by the claims and their full scope and equivalents.

Claims

1. A control method for a lint removal device in a washer-dryer combo, characterized in that: Includes the following steps: S1: Start the drying program; S2: Determine if the cumulative number of drying abnormality flags exceeds the specified number; S3: If the cumulative number of drying abnormality flags exceeds the specified number, a drying function abnormality alarm will be issued to remind personnel to clean the filter components and stop the drying program; if the cumulative number of drying abnormality flags does not exceed the specified number, the drying module will be started to begin drying. S4: Drying is complete. Check if the drying time has reached the set maximum drying time. S5: If the drying time does not reach the set maximum drying time, the cumulative count of the drying abnormality flag will be reset to zero; if the drying time reaches the set maximum drying time, the system will continue to check whether the clothes are dry. S6: If the clothes are dry, the cumulative count of the drying error flag will be reset to zero; if the clothes are not dry, the cumulative count of the drying error flag will be incremented and stored. S7: End the drying process.

2. The control method according to claim 1, characterized in that, The enclosure is equipped with a condensate temperature detection module; In step S5, whether the clothes are dried is determined by detecting whether the temperature of the condensate water drops to a set value after drying. In step S6, if the condensate temperature drops to the set value after drying, the cumulative count of the drying abnormality flag is reset to zero; if the condensate temperature does not drop to the set value after drying, the cumulative count of the drying abnormality flag is incremented and stored.

3. The control method according to claim 1, characterized in that, In step S2, it is determined whether the cumulative number of drying abnormality indicators is greater than 3.

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