Control method for hair removal of clothes dryer

Abstract

The invention relates to the technical field of clothes processing equipment, and particularly provides a control method for hair removal of a clothes dryer. The clothes dryer aims at solving the problem that a clothes dryer in the prior art cannot guarantee the hair removal effect. Therefore, the invention provides the control method for hair removal of the clothes dryer, which comprises the following steps of: firstly, determining a first positive and negative rotation switching frequency of a drying cylinder in a drying program according to an initial hair content of clothes so as to realize primary hair removal of the clothes, and when the humidity in the drying cylinder is smaller than a humidity threshold value, controlling the first positive and negative rotation switching frequency; when the clothes are dried, it is considered that the clothes reach the good drying effect at the moment, the hair removal program is started at the moment, the residual hair content of the clothes is detected, finally, the second forward and reverse rotation switching frequency of the drying cylinder in the hair removal program is determined according to the drying time, the residual hair content of the clothes and the running duration of the hair removal program, and the good hair removal effect can be achieved. According to the method, the positive and negative rotation switching frequency of the motor can be automatically adjusted according to the difference of the initial hair content of each piece of clothes, so that the clothes have a good hair removal effect.

Description

Technical Field

[0001] This invention relates to the field of clothing processing equipment technology, specifically providing a control method for removing lint from a dryer. Background Technology

[0002] With the development of society and the economy, clothing processing equipment with drying functions has become widely used, especially in areas with high humidity. This function meets people's urgent need for dry clothes. Drying devices typically utilize a heat pump to compress and heat refrigerant. The refrigerant is then sent to the condenser to release heat. The condenser is connected to the airflow inside the dryer, releasing dry air. The refrigerant then enters the capillary tube from the condenser, where its pressure and temperature rapidly decrease before entering the evaporator. The evaporator is also connected to the drying airflow, transforming the humid, hot air into dry, cool air. This refrigerant operation, combined with the tumbling of the drums and the blowing of the drying fan, achieves the drying effect.

[0003] In existing technologies, the main method for removing lint from clothes dryers is to accelerate the forward and reverse rotation of the motor during the drying process. This method cannot automatically adjust to different programs or the initial lint content of each garment, and it also cannot guarantee the lint removal effect.

[0004] Accordingly, there is a need in the art for a control method for removing lint from clothes dryers to solve the above-mentioned technical problems. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problems, namely, that the lint removal method of the existing dryer cannot be automatically adjusted according to different programs and different initial lint content of each garment, and cannot guarantee the lint removal effect.

[0006] This invention provides a control method for lint removal in a clothes dryer. The clothes dryer includes a drying drum, a humidity detection device, a lint detection and collection device, and a motor. The lint detection and collection device is configured to acquire the lint content of the clothing. The motor is configured to adjust the forward and reverse rotation frequency of the drying drum according to a motor timing sequence. The control method includes...

[0007] The system acquires the current drying program for the clothes and controls the drying drum to operate at an initial forward / reverse switching frequency, wherein the drying program includes an automatic program.

[0008] Within the first preset time after the drying program is started, the lint detection and collection device is controlled to obtain the initial lint content of the clothing.

[0009] Based on the initial lint content of the garments, the initial forward / reverse rotation frequency of the drying drum in the drying program is adjusted to a first forward / reverse rotation frequency. The initial lint content of the garments and the first forward / reverse rotation frequency have a positive correlation. When the drying program is automatic, the humidity inside the drying drum is measured.

[0010] The drying process ends when the humidity inside the drying drum falls below the specified humidity threshold.

[0011] The duration of the hair removal process is determined based on the duration of the drying process, and there is a positive correlation between the durations of the drying and hair removal processes.

[0012] The drying drum is controlled to run the lint removal program at an initial forward / reverse switching frequency, and after a second preset time, the lint detection and collection device is controlled to obtain the remaining lint content of the garment.

[0013] Based on the drying cycle duration, the remaining lint content of the garments, and the lint removal cycle duration, the initial forward / reverse rotation frequency of the dryer drum during the lint removal cycle is adjusted to a second forward / reverse rotation frequency.

[0014] Keep the drying drum in its current state and run the hair removal program until the running time ends.

[0015] In a specific embodiment of the control method for removing lint from a dryer described above, the step of "determining the runtime of the lint removal program based on the runtime of the drying program" further includes,

[0016] Obtain the material information of the current garment, wherein the material information corresponds to the drying coefficient.

[0017] The duration of the hair removal process is determined based on the running time of the drying process and the drying coefficient.

[0018] In a specific embodiment of the above-described control method for removing lint from a dryer, the step of "determining the runtime of the lint removal program based on the runtime of the drying program and the drying coefficient" further includes,

[0019] In the formula: y is the running time of the hair removal program, x is the running time of the drying program, and k is the drying coefficient.

[0020] In a specific embodiment of the control method for lint removal in a clothes dryer described above, the step of "adjusting the initial forward / reverse rotation switching frequency of the drying drum in the lint removal program to a second forward / reverse rotation switching frequency based on the running time of the drying program, the remaining lint content of the clothes, and the running time of the lint removal program" further includes,

[0021] When the drying time is greater than or equal to the time threshold, the remaining wool content of the clothing is determined.

[0022] If the remaining wool content of the garment is less than the wool content threshold, the second forward / reverse rotation frequency of the dryer drum in the lint removal process is determined to be equal to the initial forward / reverse rotation frequency.

[0023] In the specific implementation of the control method for lint removal in a clothes dryer described above, the step of "adjusting the initial forward / reverse rotation switching frequency of the drying drum in the lint removal program to a second forward / reverse rotation switching frequency based on the running time of the drying program, the remaining lint content of the clothes, and the running time of the lint removal program" further includes...

[0024] When the drying time is greater than or equal to the time threshold, the remaining wool content of the clothing is determined.

[0025] If the remaining wool content of the garment is greater than or equal to the wool content threshold, the value of the second forward and reverse switching frequency is determined based on the remaining wool content and the runtime of the wool removal program. The determination method is to obtain it by looking up an empirical table or by calculating it using an empirical formula.

[0026] In a specific embodiment of the control method for lint removal in a clothes dryer described above, the step of "adjusting the initial forward / reverse rotation switching frequency of the drying drum in the lint removal program to a second forward / reverse rotation switching frequency based on the running time of the drying program, the remaining lint content of the clothes, and the running time of the lint removal program" further includes,

[0027] When the drying time is less than the time threshold, the remaining wool content of the clothing is determined.

[0028] If the remaining lint content of the garments is greater than or equal to the lint content threshold, the second forward / reverse switching frequency of the dryer drum in the lint removal process is determined to be the rated switching frequency of the motor.

[0029] If the remaining hair content of the garment is less than the hair content threshold, the hair removal process ends.

[0030] In a specific embodiment of the above-described control method for lint removal in a clothes dryer, the clothes dryer further includes a weight detection device and a fan, wherein the fan is configured to adjust the airflow of the drying drum. Before the step "starting the drying program when the humidity inside the drying drum is greater than or equal to a humidity threshold", the control method further includes...

[0031] Obtain the weight information of the clothes in the dryer.

[0032] Based on the weight information, determine the initial airflow force of the drying drum and turn on the fan.

[0033] The weight information is negatively correlated with the initial airflow of the drying drum.

[0034] In a specific embodiment of the control method for removing lint from a clothes dryer described above, after the step of "determining the initial airflow of the drying drum based on the weight information and turning on the fan", the control method further includes,

[0035] After the fan has been turned on for a third preset time, the number of times the clothes come into contact with the lint detection and collection device and the number of times the drying drum rotates are recorded.

[0036] The clothing contact rate is obtained based on the number of times the clothing comes into contact with the lint detection and collection device and the number of times the drying drum rotates.

[0037] Based on the clothing contact rate, the initial airflow of the drying drum is adjusted to the final airflow, wherein the clothing contact rate and the final airflow have a negative correlation.

[0038] In a specific embodiment of the above-described control method for removing lint from a clothes dryer, the step of "adjusting the airflow of the drying drum according to the contact rate of the clothing" further includes...

[0039] When the contact rate of the clothing is greater than or equal to the contact rate threshold, the drying drum maintains the current airflow.

[0040] When the clothing contact rate is less than the contact rate threshold, increase the current airflow of the drying drum until the clothing contact rate is greater than or equal to the contact rate threshold.

[0041] In a specific embodiment of the control method for removing lint from a clothes dryer described above, the drying program further includes a timing program, and the control method further includes...

[0042] When the drying program is a timed program, the preset drying time of the drying program is obtained.

[0043] When the drying program reaches a preset ratio of the preset drying time, the remaining wool content of the garment is obtained.

[0044] If the remaining lint content of the garments is less than the lint content threshold, maintain the forward and reverse rotation switching frequency of the dryer at the initial forward and reverse rotation switching frequency.

[0045] If the remaining wool content of the garments is greater than or equal to the wool content threshold, the initial forward / reverse rotation switching frequency of the drying drum is adjusted to the third forward / reverse rotation switching frequency based on the remaining wool content of the garments. The remaining wool content of the garments and the third forward / reverse rotation switching frequency have a positive correlation.

[0046] Maintain the current state of the drying drum until the preset drying time ends.

[0047] By employing the above technical solution, this invention, in its automatic drying program, first determines the first forward / reverse rotation frequency of the drying drum based on the initial lint content of the garments to achieve initial lint removal. When the humidity inside the drying drum is below a certain threshold, the garments are considered to have achieved a good drying effect, at which point the lint removal program is initiated, and the remaining lint content of the garments is detected. Finally, based on the drying time, the remaining lint content of the garments, and the duration of the lint removal program, a second forward / reverse rotation frequency of the drying drum is determined to achieve a better lint removal effect. This method can automatically adjust the forward / reverse rotation frequency of the drying drum according to different programs and the different initial lint content of each garment to ensure a good lint removal effect. Attached Figure Description

[0048] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0049] Figure 1 This is a flowchart of the control method for removing lint from a clothes dryer provided by the present invention;

[0050] Figure 2 A flowchart illustrating a second embodiment of the control method for removing lint from a clothes dryer provided by the present invention;

[0051] Figure 3 This is a flowchart of a third embodiment of the control method for removing lint from a clothes dryer provided by the present invention. Detailed Implementation

[0052] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the invention and are not intended to limit the scope of protection of the invention. Those skilled in the art can make adjustments as needed to adapt to specific applications. For example, although this specific embodiment is described in conjunction with the application of the control method for lint removal in a clothes dryer, the control method for lint removal in a clothes dryer of the present invention can obviously also be used in other devices. Such changes in application scenarios do not depart from the basic principles of the present invention and fall within the scope of protection of the present invention.

[0053] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0054] With the development of society and the economy, clothing processing equipment with drying functions has become widely used, especially in areas with high humidity, where the drying function of these equipment meets people's urgent need for dry clothes. Drying devices typically utilize a heat pump to compress and heat refrigerant. The refrigerant is then sent to a condenser to release heat. The condenser is connected to the airflow inside the dryer, releasing dry air. The refrigerant then enters a capillary tube from the condenser, where its pressure and temperature rapidly decrease before entering the evaporator. The evaporator is also connected to the drying airflow, transforming the humid, hot air into dry, cool air. This refrigerant operation, combined with the tumbling of the drums and the blowing of the drying fan, achieves the drying effect. Current technology primarily relies on accelerating the forward and reverse rotation of the motor during the drying process to remove lint from clothes. This method cannot automatically adjust to different programs or the initial lint content of each garment, and therefore cannot guarantee effective lint removal.

[0055] See Figure 1 , Figure 1 This is a flowchart of a control method for lint removal in a clothes dryer provided by the present invention. Specifically, the flowchart describes a control method for when the drying program is an automatic program. Figure 1 As shown, to address the problem that existing lint removal methods in dryers cannot guarantee effective lint removal, the present invention provides a control method for lint removal in dryers, comprising:

[0056] S1: Obtain the current drying program for the clothes and control the drying drum to operate at an initial forward / reverse switching frequency, wherein the drying program includes an automatic program.

[0057] S2: Within the first preset time after the drying program is started, control the lint detection and collection device to obtain the initial lint content of the garment.

[0058] S3: Based on the initial lint content of the garments, adjust the initial forward / reverse rotation frequency of the drying drum in the drying program to a first forward / reverse rotation frequency. The initial lint content of the garments and the first forward / reverse rotation frequency have a positive correlation.

[0059] S4: When the drying program is automatic, obtain the humidity inside the drying drum.

[0060] S5: When the humidity inside the drying drum is lower than the humidity threshold, the drying program ends.

[0061] S6: Determine the duration of the hair removal program based on the duration of the drying program. There is a positive correlation between the duration of the drying program and the duration of the hair removal program.

[0062] S7: Control the drying drum to run the lint removal program at an initial forward / reverse switching frequency, and after running for a second preset time, control the lint detection and collection device to obtain the remaining lint content of the clothing.

[0063] S8: Based on the drying program's runtime, the remaining lint content of the garments, and the lint removal program's runtime, adjust the initial forward / reverse rotation frequency of the drying drum during the lint removal program to the second forward / reverse rotation frequency.

[0064] S9: Maintain the current state of the drying drum and run the hair removal program until the running time ends.

[0065] By employing the above technical solution, this invention, in its automatic drying program, first determines the first forward / reverse rotation frequency of the drying drum based on the initial lint content of the garments to achieve initial lint removal. When the humidity inside the drying drum is below a certain threshold, the garments are considered to have achieved a good drying effect, at which point the lint removal program is initiated, and the remaining lint content of the garments is detected. Finally, based on the drying time, the remaining lint content of the garments, and the duration of the lint removal program, a second forward / reverse rotation frequency of the drying drum is determined to achieve a better lint removal effect. This method can automatically adjust the forward / reverse rotation frequency of the drying drum according to different programs and the different initial lint content of each garment to ensure a good lint removal effect.

[0066] In this preferred embodiment, the dryer of the present invention includes a fan configured to adjust the airflow of the drying drum. In the control method for lint removal in a dryer provided by the present invention, the dryer uses the fan to blow hot air to dry the clothes, and simultaneously controls the forward and reverse rotation of the drying drum to remove lint from the clothes. It should be noted that in the drying and lint removal programs defined in the embodiments of the present invention, the drying drum undergoes both a hot air drying process and a forward and reverse lint removal process. That is, in both the drying and lint removal programs, the clothes experience both drying and lint removal effects simultaneously. The difference between the drying and lint removal programs is that the drying program determines its running time by detecting the humidity inside the drying drum to ensure better drying results, while the lint removal program determines the forward and reverse rotation frequency of the drying drum by detecting the remaining lint content of the clothes to ensure better lint removal results.

[0067] It should be noted that the present invention does not impose any restrictions on the specific location of the lint detection and collection device. Technicians can set it according to actual usage needs. For example, the lint detection and collection device can be set on the inner wall of the drying drum near the dryer door so that the lint detection and collection device can more accurately obtain the lint content of the clothes during the rotation of the drying drum.

[0068] In this preferred embodiment, in step S1 above, the drying program includes an automatic program and a timed program. The automatic program determines the drying time based on the humidity inside the drum, while the timed program allows the user to set the drying time as needed.

[0069] In this preferred embodiment, the forward and reverse rotation switching frequency of the drying drum includes low-frequency switching, medium-frequency switching, and high-frequency switching. It should be noted that this invention does not impose any limitations on the specific values ​​of low-frequency, medium-frequency, and high-frequency switching; those skilled in the art can set these values ​​according to actual usage needs. In the dryer provided by this invention, the motor is mechanically connected to the drying drum. By adjusting the forward and reverse rotation sequence of the motor, the forward and reverse rotation switching frequency of the drying drum can be adjusted. It is understood that the higher the forward and reverse rotation switching frequency of the drying drum, the better the lint removal effect on the clothes. It should also be noted that this invention does not impose any limitations on the initial forward and reverse rotation switching frequency of the drying drum; those skilled in the art can set this value according to actual usage needs. For example, the initial forward and reverse rotation switching frequency of the drying drum can be achieved by alternating between clockwise rotation for 4 minutes and counterclockwise rotation for 4 minutes at a low speed.

[0070] In this preferred embodiment, in step S2 above, the present invention does not impose any restrictions on the specific duration of the first preset time. Those skilled in the art can set it according to actual usage needs. For example, the first preset time can be 1 minute, 2 minutes, 3 minutes, etc.

[0071] In this preferred embodiment, in step S3 above, the first forward / reverse rotation switching frequency of the drying drum is determined by the initial wool content of the clothing. It can be understood that the higher the initial wool content of the clothing, the higher the first forward / reverse rotation switching frequency. Specifically, the initial wool content of the clothing can be divided into three levels: high wool content, medium wool content, and low wool content. It should be noted that this invention does not impose any limitations on the specific wool content values ​​for high wool content, medium wool content, and low wool content; those skilled in the art can set these values ​​according to actual usage requirements.

[0072] When the initial wool content of the garment is less than the low wool content level, the first forward / reverse rotation frequency remains the same as the initial forward / reverse rotation frequency of the drying drum, which is to alternate between clockwise and counterclockwise rotation for 4 minutes at a low speed. When the initial wool content of the garment is between the low and medium wool content levels, the first forward / reverse rotation frequency is adjusted to alternate between clockwise and counterclockwise rotation for 3 minutes at a low speed. When the initial wool content of the garment is between the medium and high wool content levels, the first forward / reverse rotation frequency is adjusted to alternate between clockwise and counterclockwise rotation for 2 minutes at a medium speed. When the initial wool content of the garment is higher than the high wool content level, the first forward / reverse rotation frequency is adjusted to alternate between clockwise and counterclockwise rotation for 1 minute at a high speed.

[0073] In this preferred embodiment, step S4 is a repetitive acquisition action, that is, the humidity detection device acquires the humidity value in the cylinder every fourth preset time. Optionally, the present invention does not impose any restrictions on the specific duration of the fourth preset time. Technicians can set it according to actual usage needs, thereby meeting the personalized needs of different customer groups and improving the user experience. For example, the fourth preset time can be 1 second, 3 seconds, 10 seconds, etc.

[0074] In this preferred embodiment, step S5 is used to determine the running time of the drying program. When the humidity inside the drying drum is less than the humidity threshold, it can be considered that the clothes have reached the preset drying level, and the drying program ends at this time. That is, the running time of the drying program is from the start of the drying program to this point. Optionally, the present invention does not impose any restrictions on the humidity threshold, and technicians can set it according to actual usage needs.

[0075] In this preferred embodiment, step S6 further includes: obtaining the material information of the current garment, wherein the material information corresponds to the drying coefficient, and the runtime of the lint removal program is determined based on the running time of the drying program and the drying coefficient. Specifically, before the user starts the drying program, the user selects the material information of the garment to be dried. The material information may include cotton, silk, polyester, leather, etc., and each type of garment material information corresponds to different lint removal data, including the drying coefficient, maximum drying time, minimum drying time, etc. In other words, when the user starts the drying program, the dryer can determine the drying coefficient of the current garment based on the material information of the garment selected by the user, and then determine the runtime of the lint removal program based on the running time of the drying program and the drying coefficient.

[0076] Specifically, the formula for determining the runtime of the hair removal program is as follows:

[0077] In the formula: y is the running time of the hair removal program, x is the running time of the drying program, and k is the drying coefficient.

[0078] In this preferred embodiment, in step S7 above, the initial forward / reverse rotation switching frequency in the drying drum during the hair removal process is the same as the initial forward / reverse rotation switching frequency in the drying drum during the drying process, which is still low-frequency switching, medium-frequency switching, and high-frequency switching, and will not be repeated here. Meanwhile, this invention does not impose any limitations on the specific duration of the second preset time; those skilled in the art can set it according to actual usage needs. For example, the second preset time can be 1 minute, 2 minutes, 3 minutes, etc.

[0079] In this preferred embodiment, in step S8 above, the second forward / reverse rotation switching frequency of the drying drum is determined by the remaining lint content of the clothing during the lint removal process. It is understood that the higher the remaining lint content of the clothing, the higher the second forward / reverse rotation switching frequency. Optionally, this invention does not impose any restrictions on the lint content threshold; those skilled in the art can set it according to actual usage requirements.

[0080] In a first possible implementation, step S8 specifically includes:

[0081] S81: When the drying time is greater than or equal to the time threshold, determine the remaining wool content of the garment.

[0082] S82: If the remaining wool content of the garment is less than the wool content threshold, determine that the second forward / reverse switching frequency of the dryer drum in the wool removal process is equal to the initial forward / reverse switching frequency.

[0083] In this embodiment, since the drying time is greater than or equal to the time threshold, it means that the clothes have undergone a drying process before the lint removal program. If the remaining lint content of the clothes is less than the lint content threshold, it means that the lint of the clothes has been almost cleaned up in the drying process. At this time, there is no need to increase the frequency of switching between forward and reverse rotation of the drying drum. That is, it is sufficient to maintain a low speed and rotate clockwise for 4 minutes and counterclockwise for 4 minutes alternately.

[0084] In a second possible implementation, step S8 further includes:

[0085] S81: When the drying time is greater than or equal to the time threshold, determine the remaining wool content of the garment.

[0086] S83: If the remaining wool content of the garment is greater than or equal to the wool content threshold, the value of the second forward and reverse switching frequency is determined based on the remaining wool content and the runtime of the wool removal program. The determination method is to obtain it by looking up an empirical table or by calculating it using an empirical formula.

[0087] The experience table is shown in Table 1. Table 1

[0088] In this embodiment, when the drying time is greater than or equal to the time threshold, it indicates that the clothes have undergone a drying process before the lint removal process. If the remaining lint content of the clothes is greater than or equal to the lint content threshold, it means that the lint of the clothes was not cleaned up during the drying process. In this case, it is necessary to increase the frequency of the forward and reverse rotation of the drying drum.

[0089] As shown in Table 1, the second forward / reverse switching frequency can be determined based on the remaining wool content and the duration of the wool removal program. The remaining wool content is graded the same as the initial wool content, namely, high wool content, medium wool content, and low wool content. The second forward / reverse switching frequency is graded the same as the first forward / reverse switching frequency, namely, low frequency switching, medium frequency switching, and high frequency switching. Specifically, low frequency switching means alternating between clockwise and counterclockwise rotation for 3 minutes at a low speed; medium frequency switching means alternating between clockwise and counterclockwise rotation for 2 minutes at a medium speed; and high frequency switching means alternating between clockwise and counterclockwise rotation for 1 minute at a high speed.

[0090] Specifically, the duration of the lint removal program is divided into three levels based on the different lint removal data for different fabric materials, including the drying coefficient, maximum drying time, and minimum drying time. For example, when the fabric is cotton, the minimum drying time is 20 minutes and the maximum drying time is 65 minutes. Therefore, the duration of the lint removal program is divided into three levels: 20-35 minutes for the first level, 35-50 minutes for the second level, and 50-65 minutes for the third level. If the calculated duration of the lint removal program is 30 minutes, then the current duration of the lint removal program is the first level. If the remaining lint content is high, according to Table 1, the second forward / reverse switching frequency is adjusted to a high-frequency switching, that is, alternating between clockwise rotation for 1 minute and counterclockwise rotation for 1 minute at high speed.

[0091] In a third possible implementation, step S8 further includes:

[0092] S84: When the drying time is less than the time threshold, determine the remaining wool content of the garment.

[0093] S85: If the remaining lint content of the garments is greater than or equal to the lint content threshold, determine that the second forward / reverse switching frequency of the dryer drum in the lint removal process is the rated switching frequency of the motor.

[0094] S86: If the remaining hair content of the garment is less than the hair content threshold, end the hair removal process.

[0095] In this embodiment, if the drying time is less than the time threshold, it indicates that the clothes have not undergone a drying process before the lint removal procedure, meaning that lint removal is performed directly on the dry clothes. If the remaining lint content of the clothes is greater than or equal to the lint content threshold, there is no need to consider the drying effect of the clothes at this time, and the second forward / reverse switching frequency is directly set to the rated switching frequency of the motor. Those skilled in the art will understand that the rated switching frequency of the motor is the fastest forward / reverse switching frequency under normal operating conditions. For example, at this time, the second forward / reverse switching frequency is adjusted to alternate between clockwise rotation for 30 seconds and counterclockwise rotation for 30 seconds at a high speed. If the remaining lint content of the clothes is less than the lint content threshold, it means that the clothes do not need to be dried or linted, and the lint removal procedure can be ended directly to save energy.

[0096] The following reference Figure 2 The second embodiment of the control method for removing lint from a clothes dryer according to the present invention will be described. Figure 2 This is a flowchart illustrating a second embodiment of the control method for lint removal in a clothes dryer according to the present invention. In this second embodiment, the prompting method of the control method for lint removal in a clothes dryer includes:

[0097] S201: Obtain the weight information of clothes worn in the dryer.

[0098] S202: Based on the weight information, determine the initial airflow force of the drying drum and turn on the fan.

[0099] S203: After the third preset time since the fan was turned on, obtain the number of times the clothes came into contact with the lint detection and collection device and the number of times the drying drum rotated.

[0100] S204: The clothing contact rate is obtained based on the number of times the clothing comes into contact with the lint detection and collection device and the number of times the drying drum rotates.

[0101] S205: Adjust the initial airflow of the dryer drum to the final airflow based on the clothing contact rate. The clothing contact rate and the final airflow have a negative correlation.

[0102] S206: Obtain the current drying program for the clothes and control the drying drum to operate at the initial forward / reverse switching frequency, wherein the drying program includes an automatic program.

[0103] S207: Within the first preset time after the drying program is started, the lint detection and collection device is controlled to obtain the initial lint content of the garment.

[0104] S208: Based on the initial lint content of the garments, adjust the initial forward / reverse rotation switching frequency of the drying drum in the drying program to a first forward / reverse rotation switching frequency, wherein the initial lint content of the garments and the first forward / reverse rotation switching frequency have a positive correlation.

[0105] S209: When the drying program is automatic, obtain the humidity inside the drying drum.

[0106] S210: When the humidity inside the drying drum is lower than the humidity threshold, the drying program ends.

[0107] S211: Determine the runtime of the hair removal program based on the runtime of the drying program, wherein the runtime of the drying program and the runtime of the hair removal program have a positive correlation.

[0108] S212: Control the drying drum to run the lint removal program at an initial forward / reverse switching frequency, and after running for a second preset time, control the lint detection and collection device to obtain the remaining lint content of the garment.

[0109] S213: Based on the drying program's runtime, the remaining lint content of the garments, and the lint removal program's runtime, adjust the initial forward / reverse rotation frequency of the drying drum during the lint removal program to the second forward / reverse rotation frequency.

[0110] S214: Maintain the current state of the drying drum and run the hair removal program until the running time ends.

[0111] In employing the above technical solution, before the automatic drying program, the present invention adjusts the airflow of the drying drum according to the weight of the garments to ensure sufficient contact between the garments and the lint detection and collection device, thereby facilitating more accurate acquisition of the lint content of the garments. Then, based on the initial lint content of the garments, the first forward / reverse rotation frequency of the drying drum in the drying program is determined to achieve initial lint removal. When the humidity inside the drying drum is below a humidity threshold, the garments are considered to have achieved a good drying effect, at which point the lint removal program is initiated, and the remaining lint content of the garments is detected. Finally, based on the drying time, the remaining lint content of the garments, and the runtime of the lint removal program, the second forward / reverse rotation frequency of the drying drum in the lint removal program is determined, thus achieving a better lint removal effect. This method can automatically adjust the forward / reverse rotation frequency of the motor according to different programs and the different initial lint content of each garment to ensure a good lint removal effect.

[0112] In this preferred embodiment, in step S202 above, since the drying process has not yet begun, the airflow inside the drying drum is cold air before the drying process. The airflow of the drying drum includes low, medium, and high speeds. Since the airflow of the drying drum is provided by a fan, the airflow level of the drying drum can be adjusted by adjusting the output power of the fan. It can be understood that the heavier the clothing, i.e., the larger the volume of the clothing, the easier it is for the clothing to come into contact with the lint detection and collection device. For lightly loaded clothing, the initial airflow of the drying drum can be increased to enhance the contact between the clothing and the lint detection and collection device. Therefore, the initial airflow of the drying drum can be determined based on the weight of the clothing. Specifically, when the weight information of the clothing is light clothing, the initial airflow of the drying drum can be high speed; when the weight information of the clothing is medium clothing, the initial airflow of the drying drum can be medium speed; and when the weight information of the clothing is heavy clothing, the initial airflow of the drying drum can be low speed. It should be noted that this invention does not impose any restrictions on the specific wind speeds of low, medium, and high wind speeds; technicians can set them according to actual usage requirements.

[0113] In this preferred embodiment, in step S203 above, the present invention does not impose any restrictions on the specific duration of the third preset time. Those skilled in the art can set it according to actual usage needs. For example, the third preset time can be 1 minute, 2 minutes, 3 minutes, etc.

[0114] In this preferred embodiment, in step S204 above, the contact rate of the clothes in the drying drum can be obtained by the ratio of the number of times the clothes come into contact with the lint detection and collection device to the number of times the drying drum rotates.

[0115] In this preferred embodiment, step S205 specifically includes:

[0116] S2051: When the clothing contact rate is greater than or equal to the contact rate threshold, maintain the current airflow output of the dryer drum.

[0117] S2052: When the clothing contact rate is less than the contact rate threshold, increase the current airflow of the dryer until the clothing contact rate is greater than or equal to the contact rate threshold.

[0118] In this embodiment, if the clothing contact rate is greater than or equal to the contact rate threshold, it indicates that the clothing is in good contact with the lint detection and collection device, and no adjustment of the airflow speed is needed. If the clothing contact rate is less than the contact rate threshold, it indicates that the clothing is not in good contact with the lint detection and collection device, and the initial airflow of the drying drum needs to be increased to the final airflow to improve the current clothing contact rate. It is understood that if the clothing contact rate is less than the contact rate threshold, the final airflow level will be higher than the initial airflow level.

[0119] The following reference Figure 3 A third embodiment of the control method for removing lint from a clothes dryer according to the present invention will be described. Figure 3 This is a flowchart of a third embodiment of the control method for lint removal in a dryer according to the present invention. The flowchart describes a control method for when the drying program is a timed program. In this third embodiment, the prompting method for the control method of lint removal in a dryer includes:

[0120] S301: Obtain the weight information of clothes inside the drying drum.

[0121] S302: Based on the weight information, determine the initial airflow force of the drying drum and turn on the fan.

[0122] S303: After the third preset time since the fan was turned on, obtain the number of times the clothes came into contact with the lint detection and collection device and the number of times the drying drum rotated.

[0123] S304: The clothing contact rate is obtained based on the number of times the clothing comes into contact with the lint detection and collection device and the number of times the drying drum rotates.

[0124] S305: Adjust the initial airflow of the dryer drum to the final airflow based on the clothing contact rate. The clothing contact rate and the final airflow have a negative correlation.

[0125] S306: Obtain the current drying program for the clothes and control the drying drum to operate at the initial forward / reverse switching frequency. The drying program includes an automatic program and a regular drying program.

[0126] S307: Within the first preset time after the drying program is started, the lint detection and collection device is controlled to obtain the initial lint content of the garment.

[0127] S308: Based on the initial lint content of the garments, the initial forward / reverse rotation switching frequency of the drying drum in the drying program is adjusted to a first forward / reverse rotation switching frequency, wherein the initial lint content of the garments and the first forward / reverse rotation switching frequency have a positive correlation.

[0128] S309: When the drying program is a timed program, obtain the preset drying time of the drying program.

[0129] S310: When the drying program reaches a preset ratio of the preset drying time, obtain the remaining wool content of the garment.

[0130] S311: If the remaining wool content of the garments is less than the wool content threshold, maintain the forward and reverse rotation switching frequency of the dryer drum at the initial forward and reverse rotation switching frequency.

[0131] S312: If the remaining wool content of the garments is greater than or equal to the wool content threshold, the initial forward / reverse rotation switching frequency of the drying drum is adjusted to the third forward / reverse rotation switching frequency based on the remaining wool content of the garments. The remaining wool content of the garments and the third forward / reverse rotation switching frequency have a positive correlation.

[0132] S313: Maintain the current state of the drying drum until the preset drying time ends.

[0133] By employing the above technical solution, this invention adjusts the airflow of the drying drum according to the weight of the garments before the automatic drying process to ensure sufficient contact between the garments and the lint detection and collection device, thereby facilitating more accurate acquisition of the lint content of the garments. Then, based on the initial lint content of the garments, a first forward / reverse rotation frequency of the drying drum is determined in the drying process to achieve initial lint removal. Furthermore, when the drying process reaches a preset ratio of the preset drying time, the remaining lint content of the garments is detected. Finally, based on the remaining lint content, a third forward / reverse rotation frequency of the drying drum is determined in the lint removal process, thus achieving a better lint removal effect. This method can automatically adjust the forward / reverse rotation frequency of the motor according to different programs and the different initial lint content of each garment to ensure a good lint removal effect.

[0134] In this preferred embodiment, in step S310 above, the present invention does not impose any restrictions on the specific value of the preset ratio. Technicians can set it themselves according to actual usage needs. For example, the preset ratio can be 50%, that is, when the drying program runs to half of the preset drying time, the remaining wool content of the clothes is obtained.

[0135] In this implementation, if the remaining lint content of the garment is less than the lint content threshold, it means that the lint has been almost completely removed during the drying process. In this case, there is no need to increase the frequency of the dryer's forward and reverse rotation; simply maintain a low rotation speed, alternating between clockwise and counterclockwise rotation for 4 minutes each. If the remaining lint content of the garment is greater than or equal to the lint content threshold, it means that the lint has not been completely removed during the drying process. In this case, it is necessary to increase the frequency of the dryer's forward and reverse rotation. The specific method for increasing the frequency of the dryer's forward and reverse rotation is to directly increase the frequency setting.

[0136] It should be noted that the above embodiments are merely used to illustrate the principles of the present invention and are not intended to limit the scope of protection of the present invention. Without departing from the principles of the present invention, those skilled in the art can adjust the above structure so that the present invention can be applied to more specific application scenarios.

[0137] Those skilled in the art will understand that the above-described control method for removing lint from a clothes dryer also includes other known structures, such as processors, controllers, and memories. These memories include, but are not limited to, random access memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory (PROM), volatile memory, non-volatile memory, serial memory, parallel memory, or registers. Processors include, but are not limited to, CPLD / FPGA, DSP, ARM processors, and MIPS processors. To avoid unnecessarily obscuring the embodiments of this disclosure, these known structures are not shown in the accompanying drawings.

[0138] Although the steps in the above embodiments are described in the above order, those skilled in the art will understand that in order to achieve the effect of this embodiment, different steps do not need to be executed in such an order. They can be executed simultaneously (in parallel) or in a reverse order. These simple variations are all within the protection scope of this invention.

[0139] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A control method for lint removal in a clothes dryer, the clothes dryer comprising a drying drum, a humidity detection device, a lint detection and collection device, and a motor, wherein, The lint detection and collection device is configured to acquire the lint content of the garments, and the motor is configured to adjust the forward and reverse rotation switching frequency of the drying drum according to the motor timing sequence. The control method includes... The system acquires the current drying program for the clothes and controls the drying drum to operate at an initial forward / reverse switching frequency, wherein the drying program includes an automatic program. Within the first preset time after the drying program is started, the lint detection and collection device is controlled to obtain the initial lint content of the clothing. Based on the initial lint content of the garments, the initial forward / reverse rotation frequency of the drying drum in the drying program is adjusted to a first forward / reverse rotation frequency. The initial lint content of the garments and the first forward / reverse rotation frequency have a positive correlation. When the drying program is an automatic program, the humidity inside the drying drum is obtained. The drying process ends when the humidity inside the drying drum falls below the specified humidity threshold. The duration of the hair removal process is determined based on the duration of the drying process, and there is a positive correlation between the durations of the drying and hair removal processes. The drying drum is controlled to run the lint removal program at an initial forward / reverse switching frequency, and after a second preset time, the lint detection and collection device is controlled to obtain the remaining lint content of the garment. Based on the drying cycle duration, the remaining lint content of the garments, and the lint removal cycle duration, the initial forward / reverse rotation frequency of the dryer drum during the lint removal cycle is adjusted to a second forward / reverse rotation frequency. Keep the drying drum in its current state and run the hair removal program until the running time ends.

2. The control method according to claim 1, characterized in that, The step of "determining the runtime of the hair removal program based on the runtime of the drying program" further includes, Obtain the material information of the current garment, wherein the material information corresponds to the drying coefficient. The duration of the hair removal process is determined based on the running time of the drying process and the drying coefficient.

3. The control method according to claim 2, characterized in that, The step of "determining the runtime of the hair removal process based on the runtime of the drying process and the additional drying coefficient" further includes, In the formula: y is the running time of the hair removal program, x is the running time of the drying program, and k is the drying coefficient.

4. The control method according to claim 2, characterized in that, The step of "adjusting the initial forward / reverse rotation switching frequency of the drying drum to a second forward / reverse rotation switching frequency in the lint removal program based on the running time of the drying program, the remaining lint content of the clothes, and the running time of the lint removal program" further includes, When the drying time is greater than or equal to the time threshold, the remaining wool content of the clothing is determined. If the remaining wool content of the garment is less than the wool content threshold, the second forward / reverse rotation frequency of the dryer drum in the lint removal process is determined to be equal to the initial forward / reverse rotation frequency.

5. The control method according to claim 2, characterized in that, The step of "adjusting the initial forward / reverse rotation switching frequency of the drying drum to a second forward / reverse rotation switching frequency in the lint removal program based on the running time of the drying program, the remaining lint content of the clothes, and the running time of the lint removal program" further includes, When the drying time is greater than or equal to the time threshold, the remaining wool content of the clothing is determined. If the remaining wool content of the garment is greater than or equal to the wool content threshold, the value of the second forward and reverse switching frequency is determined based on the remaining wool content and the runtime of the wool removal program. The determination method is to obtain it by looking up an empirical table or by calculating it using an empirical formula.

6. The control method according to claim 2, characterized in that, The step of "adjusting the initial forward / reverse rotation switching frequency of the drying drum to a second forward / reverse rotation switching frequency in the lint removal program based on the running time of the drying program, the remaining lint content of the clothes, and the running time of the lint removal program" further includes, When the drying time is less than the time threshold, the remaining wool content of the clothing is determined. If the remaining lint content of the garments is greater than or equal to the lint content threshold, the second forward / reverse switching frequency of the dryer drum in the lint removal process is determined to be the rated switching frequency of the motor. If the remaining hair content of the garment is less than the hair content threshold, the hair removal process ends.

7. The control method according to claim 1, characterized in that, The dryer also includes a weight detection device and a fan, wherein the fan is configured to adjust the airflow of the drying drum. Prior to the step "starting the drying program when the humidity inside the drying drum is greater than or equal to a humidity threshold," the control method further includes... Obtain the weight information of the clothes in the dryer. Based on the weight information, determine the initial airflow force of the drying drum and turn on the fan. The weight information is negatively correlated with the initial wind force of the drying drum.

8. The control method according to claim 7, characterized in that, After the step of "determining the initial airflow of the drying drum based on the weight information and turning on the fan", the control method further includes, After the fan has been turned on for a third preset time, the number of times the clothes come into contact with the lint detection and collection device and the number of times the drying drum rotates are recorded. The clothing contact rate is obtained based on the number of times the clothing comes into contact with the lint detection and collection device and the number of times the drying drum rotates. Based on the clothing contact rate, the initial airflow of the drying drum is adjusted to the final airflow, wherein the clothing contact rate and the final airflow have a negative correlation.

9. The control method according to claim 8, characterized in that, The step of "adjusting the airflow of the dryer drum according to the clothing contact rate" further includes, When the contact rate of the clothing is greater than or equal to the contact rate threshold, the drying drum maintains the current airflow. When the clothing contact rate is less than the contact rate threshold, increase the current airflow of the drying drum until the clothing contact rate is greater than or equal to the contact rate threshold.

10. The control method according to claim 1, characterized in that, The drying process further includes a timing program, and the control method further includes... When the drying program is a timed program, the preset drying time of the drying program is obtained. When the drying program reaches a preset ratio of the preset drying time, the remaining wool content of the garment is obtained. If the remaining lint content of the garments is less than the lint content threshold, maintain the forward and reverse rotation switching frequency of the dryer at the initial forward and reverse rotation switching frequency. If the remaining wool content of the garments is greater than or equal to the wool content threshold, the initial forward / reverse rotation switching frequency of the drying drum is adjusted to the third forward / reverse rotation switching frequency based on the remaining wool content of the garments. The remaining wool content of the garments and the third forward / reverse rotation switching frequency have a positive correlation. Maintain the current state of the drying drum until the preset drying time ends.

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