WO2016155632A1 - Clothes dryer and control method therefor - Google Patents

Abstract

A clothes dryer and a control method therefor. The clothes dryer comprises a clothes drying drum (1). A clothes inlet of the clothes drying drum (1) is provided with a humidity sensor (2) for detecting a humidity value of clothes. The clothes drying drum (1) is further provided with a detection device (3) that is disposed on the inner side of the clothes inlet. The detection device (3) is connected to a controller and is configured to detect an impedance value of the ambient environment of the detection device (3) at a preset time interval and transfer the impedance value to the controller. The clothes dryer in the present application is provided with a detection device (3) configured to detect an ambient impedance value of the detection device (3) at a preset time interval, and a controller separately compares each impedance value with a preset impedance threshold, and determines the quantity of clothes in the clothes drying drum (1) according to the number of impedance values exceeding the preset impedance threshold, so as to adjust the rotation speed of the clothes drying drum (1) according to the quantity of the clothes. The problem that clothes dryers in the prior art easily cause wrinkles of clothes in the drying process and have a non-uniform drying effect is solved.

Description

Drying machine and control method thereof Technical field

The present application relates to the field of drying equipment, for example, to a dryer and a method of controlling the same.

Background technique

With the development and advancement of technology, people use the dryer more and more frequently. The dryer can refer to an appliance that evaporates and dries the moisture in the washed clothes by electric heating. In the related art, the dryer is prone to the following problems: on the one hand, the clothes are wrinkled, and the clothes dried by the dryer are prone to wrinkles; on the other hand, the drying is uneven, and the clothes are dried. Dry clothes are prone to uneven drying.

Therefore, there is a need in the market for a dryer that has good uniformity of drying of clothes, and that is not prone to wrinkles after drying by a dryer.

Summary of the invention

The embodiment of the invention provides a clothes dryer which has good drying uniformity and is not easy to wrinkle after drying by the clothes dryer.

The embodiment of the invention provides a clothes dryer capable of adjusting the rotation speed of the clothes drying cylinder according to the amount of the laundry in the drying cylinder to solve the problem that the dryer is unevenly dried and the laundry wrinkles are serious in the prior art.

The embodiment of the invention further provides a dryer control method, which is arranged to control the dryer, and the control method is used to control the dryer to make the drying effect better.

The embodiment of the invention adopts the following technical solutions:

A clothes dryer comprising a clothes drying drum, wherein a clothes opening of the clothes drying cylinder is provided with a humidity sensor for detecting a humidity value of the laundry, and the drying cylinder is further provided with a detecting device, wherein the detecting device is disposed on the dry Inside the garment tube;

The detecting device is connected to a controller, and the detecting device is arranged to detect the surrounding of the detecting device Environmental impedance value;

The controller is configured to acquire an impedance value every predetermined time period between predetermined times, and control the rotation speed of the drying cylinder according to the impedance value.

Optionally, the detecting device is disposed at an edge of the laundry outlet of the drying cylinder.

Optionally, the detecting device is disposed above a horizontal symmetry axis of a plane in which the laundry dispensing opening is located.

Optionally, the detecting device is disposed within a range of 60° of a vertical symmetrical axial left or right deflection of a plane in which the laundry dispensing opening is located.

Optionally, the detecting device is a pair of metal electrodes.

In addition, an embodiment of the present invention further discloses a method for controlling a dryer, comprising: after the drying cylinder is operated at an initial rotational speed, the detecting device detects an impedance value of the environment surrounding the detecting device, and the controller pre-determines each time within a predetermined time. Set the time period to obtain the impedance value;

The controller compares each of the impedance values with an impedance threshold, and determines an amount of laundry in the drying cylinder according to the number of impedance values exceeding the impedance threshold, the controller being according to the drying cylinder The amount of laundry adjusts the rotational speed of the dryer cylinder.

Optionally, the controller divides the amount of laundry in the drying cylinder into at least three levels, each level corresponding to one rotation speed.

Optionally, the amount of the laundry in the dry clothes is divided into a small capacity, a medium capacity, and a large capacity;

When the controller determines that the amount of laundry in the drying cylinder is a small capacity, adjusting the rotation speed of the drying cylinder to a low rotation speed;

When the controller determines that the amount of laundry in the drying cylinder is a medium capacity, adjusting the rotation speed of the drying cylinder to a medium rotation speed;

When the controller determines that the amount of laundry in the clothes drying drum is a large capacity, the rotation speed of the drying cylinder is adjusted to a high rotation speed.

Optionally, the low rotational speed is 40-45 rpm; the medium rotational speed is 50-55 rpm; and the high rotational speed is 60-65 rpm.

Optionally, the initial rotational speed is 40 rpm.

Optionally, the preset time period is 0.4s-0.6s.

The clothes insertion opening of the clothes dryer of the clothes dryer of the present application is provided with a detecting device which is connected to the controller and is arranged to detect the impedance value in the surrounding environment. The controller acquires the impedance value every predetermined time period at a predetermined time and compares each impedance value with the impedance threshold, and determines the amount of the laundry in the drying cylinder according to the amount of the impedance value exceeding the impedance threshold. The amount of laundry in the drum adjusts the rotation speed of the dryer cylinder. Therefore, it is possible to solve the problem that the amount of the laundry in the dryer is maintained at a single rotation speed in the prior art, which causes the laundry to easily wrinkle and the drying effect is uneven.

Using the dryer control method of the present application, the controller of the dryer can adjust the rotation speed of the drying cylinder according to the amount of the laundry in the drying cylinder, and when the laundry in the drying cylinder is large, the rotation speed of the drying cylinder is increased. When the laundry in the clothes drying cylinder is small, the rotation speed of the drying cylinder is lowered to achieve uniform drying effect and wrinkles of the laundry.

DRAWINGS

1 is a schematic structural view of a clothes dryer according to Embodiment 1 of the present invention;

[Correct according to Rule 26 20.06.2016]
2 is a flow chart of a method for controlling a dryer according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram showing the hardware structure of a device according to an embodiment of the present invention.

In the picture:

1, dry clothes tube; 2, humidity sensor; 3, detection device.

detailed description

The technical solutions of the embodiments of the present invention are further described below with reference to the accompanying drawings.

Embodiment 1

In the clothes dryer of the related art, the humidity of the laundry is detected by a humidity sensor provided at the laundry outlet. During the drying process of the laundry, as the drying cylinder continuously rotates, the laundry frequently contacts the humidity sensor, and the humidity sensor obtains the clothing by detecting the impedance value of the laundry due to the inverse relationship between the humidity of the laundry and the clothing resistance value. humidity. When the humidity of the laundry is high, the impedance value of the laundry detected by the humidity sensor is small; when the humidity of the laundry is low, the impedance value of the laundry detected by the humidity sensor is large. In addition, in the clothes dryer of the related art, since the clothes are entangled in the clothes drying cylinder, the clothes located outside are dried quickly, and the clothes wound inside are slowly dried, and the relative humidity is large, and uneven drying of the clothes may occur. The problem.

Moreover, in the dryer of the related art, the amount of the clothes in the dry clothes tube also affects the drying effect of the clothes. When the amount of the clothes to be dried placed in the clothes drying cylinder is large, the clothes after drying often have wrinkles. produce. When the amount of the laundry to be dried placed in the clothes drying cylinder is small, the laundry is easily attached to the inner wall of the drying cylinder, so that the laundry is wrinkled. For example, when the clothes dryer with a rated drying capacity of 8kg is put into clothes of more than 6kg, especially when the clothes are mostly cotton fiber materials, the wrinkles of the clothes will be obvious and not easy to stretch; When 3kg of clothes are dried, the clothes are stuck on the inner wall of the drying cylinder during the drying process, and the clothes may also wrinkle.

As shown in FIG. 1, the clothes dryer of the present embodiment includes a drying cylinder 1, and the clothes insertion opening 11 of the drying cylinder 1 is provided with a humidity sensor 2 for detecting the moisture value of the laundry, and the humidity sensor 2 is set to dry clothes. The humidity of the laundry in the canister 1 is detected and the humidity value is transmitted to the controller. Wherein, optionally, the humidity sensor is composed of a pair of metal electrodes.

The drying cylinder 1 is further provided with a detecting device 3 which is disposed inside the drying cylinder 1, and optionally, the detecting device 3 can be disposed at the edge of the laundry opening of the drying cylinder 1. As shown in Fig. 1, the detecting device 3 is disposed on the inner wall of the laundry dispensing opening toward the drying cylinder 1, and the laundry can come into contact with the detecting device 3 during the rotation of the drying cylinder 1. As an optional implementation manner, the detecting device 3 in this embodiment is a pair of metal electrodes, and may be a pair of metal strip electrodes.

In addition, the detecting device 3 is electrically connected to the controller, and the detecting device 3 is arranged to continuously detect the impedance value of the environment surrounding the detecting device during the rotation of the drying cylinder 1, and the controller acquires the preset time period every predetermined time. The detection device detects the obtained impedance value. The predetermined time and the preset time period may be appropriately adjusted according to the capacity of the drying cylinder. Optionally, the predetermined time in the embodiment is 3 minutes, and the preset time period is 0.4s-0.6s. For 0.4s, that is, the controller 3 detects the impedance value in the surrounding environment every 0.4s, and then the controller compares all the impedance values acquired within 3 minutes to the impedance threshold to determine the dry result according to the comparison result. The amount of clothing in the clothespin. When the detecting device 3 comes into contact with the laundry, the impedance value of the laundry is detected. When the detecting device 3 comes into contact with the air, the impedance value in the air is detected.

As a possible implementation, the detecting device 3 is disposed above the horizontal symmetry axis of the plane in which the laundry insertion opening 11 is located. Optionally, the detecting device is disposed above the horizontal symmetry axis of the plane of the laundry insertion opening 11 and vertically symmetrically. Deviate to the left or right by 60°. When the dryer cylinder 1 is facing clockwise When rotating, the detecting device 3 is disposed above the horizontal symmetry axis of the plane of the laundry injection opening, and within a range of 60° of the vertical symmetrical axial left deflection, that is, set in the range of 10 o'clock to 12 o'clock, and optional setting At 10 o'clock. When the dryer cylinder 1 is rotated in the counterclockwise direction, the detecting device 3 is disposed above the horizontal symmetry axis of the plane of the laundry insertion opening, and within the range of 60° of the vertical symmetrical axial right deflection, that is, set at 2 o'clock-12 Within the direction of the clock direction, it can be set at 2 o'clock.

Wherein, the reason that the detecting device 3 is respectively disposed in the range of 10 o'clock to 12 o'clock or in the range of 2 o'clock to 12 o'clock is: during the rotation of the drying cylinder 1, the laundry is subjected to centrifugal force, The detection devices set in the two ranges have the most chance of contact with the clothes. Since the number of clothes in the clothes drying drum 1 is positively distributed with the number of times of contact between the detecting device 3 and the laundry, the detecting device has a large chance of contact with the laundry, and the controller can determine the dry clothes cylinder more accurately according to the impedance value detected by the detecting device. The amount of clothing, so as to properly adjust the speed of the drying cylinder. .

In the implementation process, the humidity sensor 2 and the detecting device 3 can simultaneously select the same metal electrode (such as material and/or shape), and the metal electrode of the humidity sensor 2 is disposed in the clothes of the dry clothes barrel 1 during use. The lower part of the edge of the horizontal symmetry axis of the plane. During the operation of the dryer, the laundry will fall to the bottom of the dry cylinder 1 under the action of gravity, and the humidity sensor is disposed at the lower edge of the horizontal symmetry axis of the plane of the laundry inlet to better detect the humidity value of the laundry.

Of course, only a pair of metal electrodes can be disposed in the dryer. The pair of metal electrodes can simultaneously detect the humidity value of the laundry and the number of times the laundry collides with the metal electrode, that is, simultaneously complete the humidity sensor and the detection through a pair of metal electrodes. The task of the device. If only a pair of metal electrodes are provided in the dryer, when the pair of metal electrodes are disposed at the lower edge of the horizontal symmetry axis of the plane of the clothes insertion opening, the metal electrode is more accurate in detecting the humidity of the clothes (functioning the humidity sensor) However, the detection of the capacity of the clothes is not accurate enough. If the pair of metal electrodes are placed on the upper portion of the edge of the horizontal symmetry axis of the plane in which the clothes are placed, the accuracy of the detection of the capacity of the metal electrode (the function of the detecting device) is improved, but the accuracy of the humidity detection of the clothes is improved. It is reduced.

Embodiment 2

The embodiment proposes a dryer control method. After the drying cylinder is operated at the initial rotation speed, the detecting device detects the impedance value in the environment around the detecting device. The controller is preset every time within a predetermined time The interval acquires the impedance value detected by the detecting device. The controller compares each of the impedance values detected within the predetermined time with the impedance threshold, and determines the amount of the laundry in the drying cylinder according to the amount of the impedance value exceeding the impedance threshold, and the controller adjusts the drying according to the amount of the laundry in the drying cylinder. The speed of the barrel. As an alternative embodiment, the controller divides the amount of laundry in the dry cylinder into at least three levels, each level corresponding to one speed.

As an optional embodiment, in the embodiment, the controller divides the amount of laundry in the dry clothes into three levels, which are a small capacity level, a medium capacity level, and a large capacity level. The impedance threshold in this embodiment may be an empirical value obtained after a plurality of tests, and may also be considered as a preset setting value that satisfies the customer's demand. This impedance threshold is pre-stored in the controller during actual operation. When the controller determines that the amount of laundry in the dry clothes tub 1 is a small capacity, the rotation speed of the dry clothes can 1 is adjusted to a low rotation speed; when the controller determines that the amount of laundry in the dry clothes can 1 is a medium capacity, the drying cylinder is dried. The rotation speed of 1 is adjusted to the middle rotation speed; when the controller determines that the amount of laundry in the dry clothes can 1 is a large capacity, the rotation speed of the dry clothes can 1 is adjusted to a high rotation speed. Wherein, the low rotation speed is 40-45 rpm; the medium rotation speed is 50-55 rpm; the high rotation speed is 60-65 rpm; and the dry cylinder initial rotation speed is 40 rpm.

In the embodiment, the detection principle of using the metal electrode as the detecting device is that: during the rotation of the drying cylinder, both the laundry and the air can be in contact with the metal electrode of the detecting device. Optionally, the detecting device is composed of two metal strip electrodes. The detecting device can detect the impedance value between the clothes or the air and the electrodes by forming a detection circuit through two metal strip electrodes.

The controller acquires the impedance value of the detecting device every predetermined time period in a predetermined time. Optionally, the preset time period is 0.4 seconds, and the predetermined time is 3 minutes. The controller can actively acquire the impedance value, that is, the controller sends an acquisition impedance value instruction to the detecting device every 0.4 seconds, and the detecting device transmits the obtained impedance value to the controller after receiving the instruction.

In the same material with the same humidity, when the amount of clothes in the clothes drying cylinder is large, the area of contact between the clothes and the inner wall of the drying cylinder is relatively large, and the frequency of contact with the metal strip electrode as the detecting device is relatively high, that is, the metal strip electrode is in contact with the clothes. The number of times is large, and the number of times of contact with the air is small. Therefore, the number of times the impedance value of the contact between the metal electrode and the laundry measured by the detecting device is large in a predetermined time, the controller determines that the plurality of impedance values in the predetermined time exceeds The impedance threshold has a large number of impedance values. When the amount of the laundry is small, the area in which the laundry contacts the inner wall of the drying cylinder is relatively small, and the frequency of contact with the metal strip electrode as the detecting means The rate is low, that is, the number of times the metal strip electrode is in contact with the laundry is small, and the number of times of contact with the air is small. Therefore, the number of times the impedance value of the metal electrode and the laundry measured by the detecting device is less than the predetermined time, the controller determines The number of impedance values exceeding the impedance threshold among the plurality of impedance values within the predetermined time is small. Similarly, when the amount of the clothes is moderate, the number of times the impedance value generated by the metal electrode and the laundry measured by the detecting device is also moderate within a predetermined time, the controller determines the impedance exceeding the impedance threshold among the plurality of impedance values within the predetermined time. The number of values is moderate.

The amount of laundry mentioned above is more, less or moderate, and may be the amount of laundry relative to the capacity of the drying cylinder. For example, the laundry capacity of the drying cylinder is 8 kg, and when the amount of laundry exceeds 6 kg, the drying cylinder is The amount of laundry is large. When the amount of laundry in the drying cylinder is less than 3 kg, the amount of laundry in the drying cylinder is small. When the amount of laundry in the drying cylinder is about 4 kg, the amount of laundry in the drying cylinder is moderate.

In addition, the above-mentioned detecting device detects that the impedance value exceeds the impedance threshold by a large number, a small amount or a moderate amount, and may be the number of impedance values relative to a preset number, for example, the preset number is 300, and the detecting device is The impedance value is measured within a predetermined time (within 3 minutes) (measured once every 0.4 seconds), when the controller determines that the number of 450 impedance values in the predetermined time exceeds the impedance threshold by 380 (more than the preset number) 300), it is determined that the laundry volume of the dry clothes is a large capacity; when the controller determines that the number of 450 impedance values exceeds the impedance threshold is 280 (less than the preset number of 300), the laundry quantity of the dry clothes is determined. For the small capacity; when the controller determines that the number of 450 impedance values exceeds the impedance threshold is 300 (equal to the preset number of 300), it is determined that the laundry volume of the dry clothes is the medium capacity.

The control method of the dryer is described in detail below through an optional operation process: after the dryer is opened, the drying cylinder is rotated at an initial rotation speed of 40 rpm, and when the laundry in the dry cylinder is in contact with the metal electrode at a corresponding frequency, the detection is performed. The device continuously detects the impedance value in the surrounding environment in real time, and the controller acquires the impedance value detected by the detecting device every 0.4s (preset time period). After the start of the dryer operation for 3 minutes (predetermined time) (this preset time period and the predetermined time can be adjusted according to the actual load conditions), the controller keeps the impedance value every 0.4s interval, the controller will Each acquired impedance value is compared with an impedance threshold, and the amount of laundry in the drying cylinder is determined according to the amount of the impedance value exceeding the impedance threshold within 3 minutes, and the controller adjusts the rotation speed of the drying cylinder according to the amount of laundry in the drying cylinder . For example, the impedance value data measured by the detecting device in 3 minutes is 450 (including the number of times the detecting device contacts the laundry and the number of times the detecting device contacts the air), the amount of the impedance value exceeding the impedance threshold, and the clothes capacity of the drying cylinder. The corresponding relationship of the quantity is: when the number of impedance values exceeding the impedance threshold is 380, the controller defines the capacity of the clothes drying cylinder as a large capacity, and the controller adjusts the rotation speed of the drying cylinder to 60-65 rpm; the impedance exceeding the impedance threshold When the value is 280, the controller defines that the laundry capacity of the dry clothes is medium capacity, the controller adjusts the rotation speed of the drying cylinder to 40-45 rpm; when the impedance value exceeds the impedance threshold is 180, the controller defines the dry The laundry capacity of the garment tube is a small capacity; the number of impedance values exceeding the impedance threshold is 300, and the controller defines that the laundry capacity of the dry cylinder is the medium capacity, and the controller adjusts the rotation speed of the drying cylinder to 50-55 rpm.

When the control method in the embodiment determines that the capacity in the dry cylinder is a small capacity, the reason why the dry cylinder is operated at a low rotation speed is that the laundry is attached to the wall of the drying cylinder in order to prevent the rotation speed of the drying cylinder from being too high. Thereby, the laundry is not uniformly contacted with the drying wind, and at the same time, the rotation speed of the drying cylinder is prevented from being excessively caused, so that the laundry is pressed by the circumferential direction, and the problem that the wrinkles cannot be stretched is generated. When the amount of laundry in the clothes drying cylinder is large, the reason for selecting the high-speed operation of the drying cylinder is to increase the centrifugal force by increasing the angular velocity, so that the laundry is stretched in the drying cylinder under the action of large centrifugal force to prevent a large area. The pleats are produced while improving the uniformity of drying. When the capacity of the laundry in the clothes drying cylinder is medium capacity, the reason why the rotation speed in the drying cylinder is selected is that the drying cylinder maintains a moderate angular velocity operation, and the laundry can be relaxed by the appropriate centrifugal force to prevent the laundry from being excessively rotated. When attached to the wall of the tube, the rotation speed of the drying cylinder can be prevented from being too low, the laundry cannot obtain sufficient centrifugal force, and the clothes cannot be stretched, so that the clothes run in the tube in a lump manner and excessive wrinkles occur.

Using the control method in the embodiment, the controller can adjust the rotation speed of the drying cylinder according to the amount of the laundry in the drying cylinder. When the laundry in the drying cylinder is more, the rotation speed in the drying cylinder is increased, when the drying cylinder is in the drying cylinder. When the clothes are small, the rotation speed of the drying cylinder is low, so that the drying effect is good, and the clothes dried by the dryer are less prone to wrinkles.

Embodiment 3

The embodiment of the invention further provides a storage medium. Optionally, in this embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

After the drying cylinder (1) is operated at the initial rotation speed, the detecting device (3) detects the impedance value of the environment surrounding the detecting device, and the controller acquires the impedance value every predetermined time period within a predetermined time;

The controller compares each of the impedance values with an impedance threshold and according to the excess Determining the amount of the laundry in the drying cylinder (1) by the number of impedance values of the impedance threshold;

The controller adjusts the rotational speed of the drying cylinder (1) according to the amount of laundry in the drying cylinder (1).

Optionally, in this embodiment, the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A non-volatile storage medium that can store program code, such as a disc or an optical disc.

For example, the examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

Obviously, those skilled in the art should understand that the above modules or steps can be implemented by a general computing device, which can be concentrated on a single computing device or distributed over a network of multiple computing devices. They may be implemented in program code executable by a computing device, such that they may be stored in a storage device for execution by a computing device, and in some instances, illustrated or described in a different order than those illustrated herein. The steps are either made into integrated circuit modules, or a plurality of modules or steps are made into a single integrated circuit module. The above is only an embodiment of the present invention and is not intended to limit the present invention.

Embodiment 4

FIG. 3 is a schematic structural diagram of a hardware of a device according to an embodiment of the present invention. As shown in FIG. 3, the device includes:

One or more processors 410, one processor 410 is taken as an example in FIG. 3;

Memory 420;

The device may also include an input device 430 and an output device 440.

The processor 410, the memory 420, the input device 430, and the output device 440 in the device may be connected by a bus or other means, and the connection through the bus is taken as an example in FIG.

The memory 420 is a computer readable storage medium that can be used to store software programs, computer executable programs, and modules. The processor 410 executes various functional applications of the server and data processing by executing software programs, instructions, and modules stored in the memory 420, that is, the control method of the dryer of the above method embodiment.

The memory 420 may include a storage program area and a storage data area, wherein the storage program area is storable The operating system, an application required for at least one function; the storage data area can store data created according to the use of the terminal device, and the like. Moreover, memory 420 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, memory 420 can optionally include memory remotely located relative to processor 410, which can be connected to the terminal device over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

Input device 430 can be used to receive input digital or character information and to generate key signal inputs related to user settings and function control of the terminal. Output device 440 can include a display device such as a display screen.

The one or more modules are stored in the memory 420, and when executed by the one or more processors 410, perform the following operations:

After the drying cylinder (1) is operated at the initial rotation speed, the detecting device (3) detects the impedance value of the environment surrounding the detecting device, and the controller acquires the impedance value every predetermined time period within a predetermined time;

The controller compares each of the impedance values with an impedance threshold, and determines the amount of laundry in the drying cylinder (1) according to the number of impedance values exceeding the impedance threshold;

The controller adjusts the rotational speed of the drying cylinder (1) according to the amount of laundry in the drying cylinder (1).

Claims (11)

A clothes dryer comprising a drying cylinder (1), the clothes opening of the drying cylinder (1) is provided with a humidity sensor (2) for detecting a humidity value of the laundry, characterized in that: the drying cylinder (1) Is further provided with a detecting device (3), the detecting device (3) being disposed inside the drying cylinder (1); The detecting device (3) is connected to a controller, and the detecting device (3) is arranged to detect an impedance value of an environment surrounding the detecting device; The controller is configured to acquire an impedance value every predetermined time period between predetermined times, and control the rotation speed of the drying cylinder according to the impedance value. The clothes dryer according to claim 1, wherein the detecting means (3) is provided at an edge of the laundry dispensing opening of the drying cylinder (1). The clothes dryer according to claim 1, wherein the detecting means (3) is disposed above a horizontal symmetry axis of a plane in which the laundry dispensing opening is located. The clothes dryer according to claim 2, wherein the detecting means (3) is disposed within a range of 60° of a vertical symmetrical axial left or right deflection of a plane in which the laundry dispensing opening is located. The clothes dryer according to any one of claims 1 to 4, wherein the detecting device (3) is a pair of metal electrodes. A drying machine control method comprises: after the drying cylinder (1) is operated at an initial rotation speed, the detecting device (3) detects an impedance value of the environment surrounding the detecting device, and the controller acquires the predetermined time period at intervals of a predetermined time. Impedance value The controller compares each of the impedance values with an impedance threshold, and determines the amount of laundry in the drying cylinder (1) according to the number of impedance values exceeding the impedance threshold, the controller according to the The amount of laundry in the dry cylinder (1) adjusts the rotational speed of the dry cylinder (1). The dryer control method according to claim 6, wherein the controller divides the amount of laundry in the drying cylinder (1) into at least three levels, each of which corresponds to one rotational speed. The dryer control method according to claim 7, wherein the controller divides the amount of laundry in the drying cylinder (1) into a small capacity, a medium capacity, and a large capacity; When the controller determines that the amount of laundry in the drying cylinder (1) is a small capacity, adjusting the rotation speed of the drying cylinder (1) to a low rotation speed; When the controller determines that the amount of laundry in the drying cylinder (1) is a medium capacity, adjusting the rotation speed of the drying cylinder (1) to a medium rotation speed; When the controller determines that the amount of laundry in the drying cylinder (1) is a large capacity, the rotation speed of the drying cylinder (1) is adjusted to a high rotation speed. The dryer control method according to claim 8, wherein said low rotation speed is 40-45 rpm; The medium speed is 50-55 rpm; The high speed is 60-65 rpm. The dryer control method according to claim 6, wherein the initial rotational speed is 40 rpm. The dryer control method according to any one of claims 6 to 10, wherein the predetermined period of time is 0.4 s to 0.6 s.

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