Drying apparatus

Abstract

The application discloses a drying device. The drying device comprises a cylinder body, the cylinder body has an inner wall, the inner wall surrounds a cavity, a far-infrared radiation mechanism, the far-infrared radiation mechanism comprises a graphene far-infrared emission film, the graphene far-infrared emission film is attached to the inner wall, a stirring mechanism, the stirring mechanism is arranged in the cavity, the stirring mechanism is used for stirring the material to be dried, and a sensing mechanism, the sensing mechanism is arranged on the cylinder body, the sensing device is used for emitting an electromagnetic wave signal to the material to be dried and receiving a return wave signal, and the dry-wet state of the material to be dried is determined based on the return wave signal. The cylinder body of the drying device is fixed and does not need to be provided with a complex transmission system and a motor and the like, so that the structure of the drying device is greatly simplified, noise is small, and energy is saved. The graphene far-infrared emission film directly radiates far-infrared rays to the material to be dried, there is no loss of energy penetrating through the wall of the cylinder body, and the radiation efficiency is high. The stirring mechanism can overturn the drying area, so that the material to be dried is uniformly heated.

Description

Technical Field

[0001] This invention relates to the field of drying technology, and more specifically, to a drying apparatus. Background Technology

[0002] Drying devices, such as tumble dryers, typically use a rotating drum to tumble the clothes and generate hot air that passes through the clothes to remove moisture, thus drying them. This method requires a motor to drive the drum, a transmission system, and a fan, resulting in a complex structure and high noise levels. Summary of the Invention

[0003] One object of the present invention is to provide a new technical solution for a drying apparatus.

[0004] According to a first aspect of the present invention, a drying apparatus is provided. The drying apparatus includes: A cylindrical body having an inner wall that forms a cavity; A far-infrared radiation mechanism, comprising a graphene far-infrared emitting film, wherein the graphene far-infrared emitting film is adhered to the inner wall; A stirring mechanism, disposed within the cavity, is used to stir the material to be dried; and A sensing mechanism is provided in the cylinder. The sensing device is used to emit electromagnetic wave signals to the object to be dried and receive echo signals, and determine the dry and wet state of the object to be dried based on the echo signals.

[0005] Optionally, it further includes: a control mechanism connected to the far-infrared radiation mechanism, the stirring mechanism and the sensing mechanism, the control mechanism being used to adjust the power of the far-infrared radiation mechanism and / or the operating state of the stirring mechanism according to the echo signal of the object to be dried.

[0006] Optionally, the control mechanism is configured to increase the radiation power of the far-infrared radiation mechanism to a region when the energy of the echo signal in a certain region of the object to be dried is lower than the energy of the echo signal outside that region.

[0007] Optionally, the cavity is a cuboid, and the inner wall includes four side walls, a top wall, and a bottom wall opposite to the top wall. The graphene far-infrared emitting film is attached to the four side walls and the bottom wall.

[0008] Optionally, the stirring mechanism is located on the bottom wall, the bottom wall has a hole, the stirring mechanism is located in the hole, and the graphene far-infrared emitting film is arranged around the stirring mechanism.

[0009] Optionally, the sensing mechanism is located on the top wall.

[0010] Optionally, the corners of the four sidewalls and / or the corners between the sidewalls and the bottom wall are rounded, and the radius of the rounded corners is greater than or equal to 20 cm.

[0011] Optionally, the sensing mechanism includes at least one of an ultra-wideband radar module, a star-flash radar sensing module, and a millimeter-wave radar module.

[0012] Optionally, the agitator includes a pulsator with a plurality of blades formed on its top.

[0013] Optionally, the outer surface of the impeller is coated with liquid silicone.

[0014] Optionally, the outer wall of the cylinder is provided with a heat insulation layer.

[0015] Optionally, the stirring mechanism rotates at a speed of 30-60 revolutions per minute, and the stirring mechanism can periodically rotate in both forward and reverse directions.

[0016] The drying device provided in this application embodiment has a fixed cylinder during operation, eliminating the need for complex transmission systems and motors, thus greatly simplifying the structure of the drying device and resulting in low noise and energy savings. The graphene far-infrared emitting film is directly adhered to the inner wall of the cylinder, radiating far-infrared rays directly to the object to be dried without energy loss through the cylinder wall, resulting in high radiation efficiency. The stirring mechanism agitates the drying area, ensuring uniform heating of the object. The synergistic effect of the stirring mechanism and the graphene far-infrared emitting film achieves efficient and uniform radiation drying, significantly improving the drying efficiency of the object.

[0017] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0019] Figure 1 This is a schematic diagram of the drying apparatus according to an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures: 100. Cylinder; 110. Inner wall; 111. Side wall; 112. Top wall; 113. Bottom wall; 120. Cavity; 200. Far-infrared radiation mechanism; 210. Graphene far-infrared emitting film; 300. Stirring mechanism; 310. Impeller; 311. Blade; 400. Sensing mechanism; 500. Control mechanism. Detailed Implementation

[0021] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0022] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0023] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0024] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0026] In related technologies, drying devices, such as tumble dryers, typically use a rotating drum to tumble the clothes and generate hot air that passes through the clothes to remove moisture, thus drying them. This method requires a motor to drive the drum, a transmission system, and a fan, resulting in a complex structure and high noise levels.

[0027] The drying device of this embodiment has a fixed cylinder 100, simple structure, and low noise. The graphene far-infrared emitting film 210 is directly attached to the inner wall 110 of the cylinder 100. The graphene far-infrared emitting film 210 directly radiates far-infrared rays to the object to be dried, with no energy loss due to penetration through the cylinder 100 wall, resulting in high radiation efficiency. The stirring mechanism 300 can agitate the drying area, thereby ensuring uniform heating of the object to be dried. The synergistic effect of the stirring mechanism 300 and the graphene far-infrared emitting film 210 achieves efficient and uniform radiation drying, greatly improving the drying efficiency of the object.

[0028] The drying apparatus according to embodiments of this application is described in detail below with reference to the accompanying drawings.

[0029] According to one embodiment of this application, a drying apparatus is provided. The drying apparatus includes: A cylindrical body 100 has an inner wall 110, which forms a cavity 120. The far-infrared radiation mechanism 200 includes a graphene far-infrared emitting film 210, which is attached to the inner wall 110. A stirring mechanism 300 is disposed within the cavity 120 and is used to stir the material to be dried; and A sensing mechanism 400 is disposed in the cylinder 100. The sensing mechanism 400 is used to emit electromagnetic wave signals to the object to be dried and receive echo signals, and determine the dry and wet state of the object to be dried based on the echo signals.

[0030] like Figure 1 As shown, the drying device includes a cylinder 100, a far-infrared radiation mechanism 200, a stirring mechanism 300, and a sensing mechanism 400. The cylinder 100 has an inner wall 110, which forms a cavity 120. The cylinder 100 can be rectangular, cylindrical, elliptical, or similar shapes. The cavity 120 is used to hold items to be dried, such as clothing, fabrics, sponges, and fibers.

[0031] The far-infrared radiation mechanism 200 is used to radiate far-infrared rays to dry the object to be dried. The far-infrared radiation mechanism 200 includes a graphene far-infrared emitting film 210, which is attached to the inner wall 110 of the cylinder 100. The graphene far-infrared emitting film 210 is an electrothermal film using graphene as the main conductive material. When energized, the graphene far-infrared emitting film 210 emits far-infrared rays of a set wavelength. For example, the wavelength of far-infrared rays is 8μm-14μm. Far-infrared rays in this band are easily absorbed by water molecules, causing the moisture to evaporate and thus quickly drying the object to be dried. The graphene far-infrared emitting film 210, attached to the inner wall 110, fully utilizes the area of ​​the inner wall 110, greatly increasing the far-infrared radiation area and improving the drying efficiency of the object to be dried.

[0032] A stirring mechanism 300 is located inside the cavity 120 and is used to stir the material to be dried, causing it to tumble continuously and ensuring that all parts of the material receive far-infrared radiation evenly. The stirring mechanism 300 significantly improves the drying efficiency of the material.

[0033] A sensing mechanism 400 is mounted on the cylinder 100 and is used to emit electromagnetic wave signals to the item to be dried and receive echo signals, determining the dryness / wetness state of the item based on the echo signals. Higher moisture levels indicate a higher water content in the item, requiring a longer drying time and / or higher drying power. Water molecules have a high dielectric constant and dielectric loss in the microwave frequency band, causing electromagnetic wave signals to propagate at significantly slower speeds and experience substantial energy absorption and attenuation when passing through water-containing clothing. The sensing mechanism 400 emits electromagnetic wave signals into the cylinder 100 and receives echo signals, determining the dryness / wetness state of the item by analyzing the amplitude changes of the echo signals. This is because water molecules are polar molecules, thus they absorb and scatter electromagnetic waves at a set frequency, resulting in a decrease in the amplitude and energy of the echo signals. The more moist the object to be dried, the higher its moisture content. The greater the energy reduction of the echo signal compared to the emitted electron wave signal, resulting in a lower echo signal energy. Conversely, the drier the object, the lower its moisture content. The less the energy reduction of the echo signal compared to the emitted electron wave signal, resulting in a higher echo signal energy. The wet / dry state of the object can be determined based on the echo signal. In this application, the wet / dry state can be determined based on a single acquired echo signal or multiple acquired echo signals.

[0034] In some embodiments, the sensing mechanism 400 emits a first electromagnetic wave signal toward the object to be dried and acquires a first echo signal passing through the object to be dried; After transmitting the first electromagnetic wave signal, a second electromagnetic wave signal is transmitted to the object to be dried, and a second echo signal passing through the object to be dried is obtained; The dry and wet state of the object to be dried is determined based on the first echo signal and the second echo signal.

[0035] Specifically, the first electromagnetic wave signal and the second electromagnetic wave signal are electromagnetic wave signals with identical parameters. For example, their core parameters such as transmission frequency, amplitude, transmission power, and transmission duration are kept consistent to ensure that the energy emitted by the two electromagnetic wave signals is the same, eliminate the interference caused by the parameter differences of the signals themselves on the detection results, and ensure that the echo signals detected by the two tests are comparable.

[0036] In practice, the first and second electromagnetic wave signals use electromagnetic waves with identical parameters. They are emitted sequentially under the same operating conditions and environmental conditions, ensuring that the penetration capability and energy loss of the two electromagnetic wave signals remain consistent. This method reduces the inherent differences in echo signals caused by variations in electromagnetic wave signal parameters, ensuring that the numerical differences between the two echo signals are solely due to changes in the dryness or wetness of the object being dried, thus significantly improving the accuracy and effectiveness of the sensing data.

[0037] Accordingly, the dry and wet state of the object to be dried is determined based on the first echo signal and the second echo signal.

[0038] In practice, parameters such as the amplitude of the first and second echo signals are collected. By comparing the echo signals of the two sets of electromagnetic wave signals from the same source and with the same energy, the dryness and wetness state of the object to be dried is determined. Assuming the emission energy of the first and second electromagnetic wave signals is exactly the same, the lower the moisture content of the object to be dried, the higher the degree of dryness, the weaker the absorption and attenuation of the electromagnetic wave signal by the object, and the smaller the numerical deviation between the two echo signals. Conversely, the higher the moisture content of the object to be dried, the more humid it is, the more obvious the difference in attenuation between the two echo signals, and the greater the numerical difference between the two echo signals.

[0039] This application embodiment effectively eliminates the interference of the electromagnetic wave signal parameters themselves by time-division detection of two sets of electromagnetic wave signals with the same parameters, so that the difference in the echo signal completely corresponds to the dryness and wetness state of the object to be dried, realizing accurate detection of the dryness and wetness state of the object to be dried, and providing accurate and reliable data support for subsequent judgment of the dryness and wetness level of the object to be dried based on the difference and ratio of the echo signal, as well as for adjusting the power of the graphene far-infrared radiation film.

[0040] In some embodiments, the wet / dry state of the object to be dried is determined based on the difference and / or ratio between the first echo signal and the second echo signal.

[0041] In the embodiments of this application, the difference refers to the difference in amplitude between the first echo signal and the second echo signal. The ratio refers to the ratio of the amplitude of the first echo signal to the amplitude of the second echo signal. The drying method of the embodiments of this application can use the difference alone, the ratio alone, or a combination of both the difference and the ratio to determine the dryness or wetness of the object to be dried.

[0042] For example, the standard difference range and standard ratio range of the first and second echo signals under different wet and dry conditions are pre-calibrated. During real-time detection, the difference and ratio of the measured first and second echo signals are calculated, and the measured values ​​are compared with the standard ranges. If the difference or ratio falls within the range corresponding to high moisture content, the material to be dried is determined to be in a moist state; if the value falls within the range corresponding to medium moisture content, the material to be dried is determined to be in a semi-dry state; if the value is close to the drying baseline value, the material to be dried is determined to be in a dry state.

[0043] The embodiments of this application use the difference and / or ratio between the first echo signal and the second echo signal for determination, which can effectively eliminate the detection error of a single electromagnetic wave signal caused by external factors such as ambient temperature, slight equipment vibration, and signal interference. This greatly improves the anti-interference ability and detection accuracy of the dry and wet state determination, and the determination result of the dry and wet state is more stable and reliable.

[0044] In some embodiments, the sensing mechanism 400 acquires echo signals passing through the object to be dried at multiple times; A fitting curve is determined based on the echo signals at different times, and the dry and wet state of the object to be dried is determined based on the slope of the fitting curve.

[0045] Specifically, echo signals passing through the object to be dried at multiple times are acquired.

[0046] For example, during the drying cycle of the object to be dried, electromagnetic wave signals are emitted at fixed time intervals, and echo signals corresponding to different times are collected in real time to form a multi-time-series echo signal data set. For example, an echo signal is collected every 0.5 seconds, and continuous sampling is carried out throughout the process to realize dynamic data acquisition of the drying process.

[0047] A fitting curve is determined based on the echo signals at different times, and the dry and wet state of the object to be dried is determined based on the slope of the fitting curve.

[0048] For example, by using echo signal parameters collected at multiple times as the ordinate and the acquisition time as the abscissa, a continuous signal change fitting curve can be generated through data fitting. The slope of the fitting curve represents the real-time rate of change of the echo signal. The slope can reflect the evaporation rate of moisture inside the object to be dried and the trend of changes in its dry and wet state.

[0049] Specifically, in the initial stage of drying, the moisture content of the material to be dried is high, the evaporation rate is fast, the echo signal parameters change greatly, and the absolute value of the slope of the fitting curve is large, indicating that the material to be dried is in a rapidly drying, humid state. In the middle stage of drying, the moisture of the material to be dried gradually disappears, the evaporation rate slows down, and the absolute value of the slope of the fitting curve gradually decreases, indicating that the material to be dried is in a semi-dry state. In the later stage of drying, the moisture of the material to be dried is basically evaporated, the parameters of the echo signal tend to stabilize, and the slope of the fitting curve is close to zero, indicating that the material to be dried has reached a dry state.

[0050] Optionally, a threshold for the slope of the fitting curve corresponding to different drying stages can be pre-calibrated. By comparing the slope of the real-time fitting curve with the threshold, the level of the dryness and wetness of the object to be dried can be determined, thereby realizing dynamic judgment of the dryness and wetness of the object to be dried.

[0051] In this embodiment, by analyzing the fitting curve of multi-time-series echo signals, not only can the current dry and wet state of the object to be dried be detected, but the changing trend of the dry and wet state of the object to be dried can also be predicted. This allows for pre-matching of the appropriate drying power, avoiding the problem of power adjustment lag of the graphene far-infrared radiation film, making the power control of the graphene far-infrared radiation film more accurate, and further improving the drying efficiency and drying uniformity.

[0052] Furthermore, the sensing mechanism 400 can also distinguish the differences in echo signals of different areas of the object to be dried inside the drum 100, thereby realizing the spatial distribution sensing of the local echo signals of the object to be dried inside the drum 100, such as clothing.

[0053] The drying device provided in this embodiment has a fixed cylinder 100 during operation, eliminating the need for complex transmission systems and motors, thus greatly simplifying the structure of the drying device and resulting in low noise and energy savings. The graphene far-infrared emitting film 210 is directly attached to the inner wall 110 of the cylinder 100, directly radiating far-infrared rays to the object to be dried without energy loss through the cylinder 100 wall, resulting in high radiation efficiency. The stirring mechanism 300 can agitate the drying area, ensuring uniform heating of the object. The synergistic effect of the stirring mechanism 300 and the graphene far-infrared emitting film 210 achieves efficient and uniform radiation drying, significantly improving the drying efficiency of the object. The sensing mechanism 400 can accurately sense the echo signal of the object to be dried and determine its wet / dry state based on the echo signal, providing a basis for controlling the radiation power of the far-infrared radiation mechanism 200, further improving the drying efficiency of the drying device.

[0054] In some embodiments of this application, the drying device further includes a control mechanism 500, which is connected to the far-infrared radiation mechanism 200, the stirring mechanism 300 and the sensing mechanism 400. The control mechanism 500 is used to adjust the power of the far-infrared radiation mechanism 200 and / or the operating state of the stirring mechanism 300 according to the echo signal of the object to be dried.

[0055] like Figure 1 As shown, the drying apparatus also includes a control mechanism 500, which is connected to the far-infrared radiation mechanism 200, the stirring mechanism 300, and the sensing mechanism 400. The control mechanism 500 is used to adjust the power of the far-infrared radiation mechanism 200 and / or the operating state of the stirring mechanism 300 according to the echo signal of the object to be dried.

[0056] In this embodiment, the control mechanism 500 can be a microcontroller or a digital signal processor, etc. The control mechanism 500 receives the echo signal fed back by the sensing mechanism 400 and outputs control commands according to a preset algorithm. When the amplitude of the echo signal of the object to be dried is low, for example, below a threshold, the control mechanism 500 can increase the power of the far-infrared radiation mechanism 200, for example, to 80%-100% of the rated power, and at the same time set the rotation speed of the stirring mechanism 300 to a high speed, for example, 50 rpm, so that the drying device maintains a high-efficiency drying mode; when the amplitude of the echo signal of the object to be dried increases to above the threshold, the control mechanism 500 outputs a control command to reduce the power of the far-infrared radiation mechanism 200 to 40% of the rated power and slow down the stirring speed, for example, 30 rpm, so that the drying device maintains an energy-saving drying mode (in this case, the threshold is the amplitude of the echo signal that has not reached the drying state), or directly shuts down the drying device (in this case, the threshold is the amplitude of the echo signal that has reached the drying state). The control device of this application embodiment can dynamically adjust the drying parameters according to the amplitude of the echo signal of the actual object to be dried, so as to avoid over-drying or under-drying and greatly improve the drying efficiency.

[0057] Alternatively, when the amplitude of the echo signal of the object to be dried is low, for example, below a threshold, the control mechanism 500 adjusts only the power of the far-infrared radiation mechanism 200 or the rotation speed of the stirring mechanism 300 to a higher value; when the amplitude of the echo signal of the object to be dried increases to above the threshold, the control mechanism 500 adjusts only the power of the far-infrared radiation mechanism 200 or the rotation speed of the stirring mechanism 300 to a lower value.

[0058] In some embodiments of this application, the control mechanism 500 is configured to increase the radiation power of the far-infrared radiation mechanism 200 to the area where the energy of the echo signal in a certain area of ​​the object to be dried is higher than the energy of the echo signal in areas outside that area.

[0059] In this embodiment, the higher the energy of the echo signal, the higher the amplitude of the echo signal. The sensing mechanism 400 can detect the energy distribution of the echo signal in different areas of the object to be dried within the cavity 120, for example, by obtaining the energy distribution of the echo signal in different areas of the object to be dried through multiple antenna arrays or scanning methods. The control mechanism 500 controls the power of the graphene far-infrared emitting film 210 radiating to different areas according to the energy distribution of the echo signal in different areas. For example, the graphene far-infrared emitting film 210 can be divided into multiple independent radiation areas, and higher power or extended energizing time can be applied to areas with lower echo signal energy to achieve localized enhanced drying. The drying device provided in this embodiment can accurately locate and concentrate the drying of areas with low echo signal energy of the object to be dried, avoiding energy waste caused by overall heating of the object to be dried, further improving drying efficiency and uniformity, and achieving good energy-saving effect.

[0060] In some embodiments of this application, the cavity 120 is a cuboid, the inner wall 110 includes four side walls 111, a top wall 112 and a bottom wall 113 opposite to the top wall 112, and the graphene far-infrared emitting film 210 is attached to the four side walls 111 and the bottom wall 113.

[0061] like Figure 1 As shown, the cavity 120 is a cuboid, and its inner wall 110 includes four side walls 111, a top wall 112, and a bottom wall 113 opposite to the top wall 112. A graphene far-infrared emitting film 210 is attached to the four side walls 111 and the bottom wall 113, thereby fully utilizing the installation space of the inner wall 110 of the cylinder 100 and increasing the power of the far-infrared radiation mechanism 200. The cuboid cavity 120 facilitates the placement of the object to be dried. Furthermore, the side walls 111 and bottom wall 113 of the cylinder 100 are both covered with the graphene far-infrared emitting film 210, thus forming a multi-faceted radiation field, allowing the object to be dried to receive far-infrared rays simultaneously from multiple directions, resulting in more uniform heating of the object.

[0062] In some embodiments of this application, the stirring mechanism 300 is located on the bottom wall 113, the bottom wall 113 has a hole, the stirring mechanism 300 is located in the hole, and the graphene far-infrared emitting film 210 is disposed around the stirring mechanism 300.

[0063] like Figure 1As shown, the stirring mechanism 300 is located at the bottom wall 113, and a hole is provided in the middle of the bottom wall 113. The stirring mechanism 300 is installed in the hole. The graphene far-infrared emitting film 210 is arranged around the stirring mechanism 300. In this way, the stirring mechanism 300 is installed in the central area of ​​the bottom wall 113. The graphene far-infrared emitting film 210 located on the bottom wall 113 is annular and arranged around the stirring mechanism 300, which ensures that the bottom wall 113 still has the function of radiant heating, while leaving space for the stirring mechanism 300. When the stirring mechanism 300 rotates, it can push the material to be dried in the central area of ​​the bottom wall 113 to the surrounding area. The surrounding graphene far-infrared emitting film 210 can radiate the material to be dried, forming a circular radiation, which improves the drying efficiency.

[0064] In some embodiments of this application, the sensing mechanism 400 is located on the top wall 112.

[0065] In this embodiment, the top wall 112 is positioned relatively high. The sensing mechanism 400 located at the top wall 112 emits electromagnetic waves downwards, covering the entire cavity 120 and is less likely to be blocked by the object to be dried, which is beneficial for obtaining accurate distribution data of the echo signal from the object to be dried. For example, the sensing mechanism 400 is installed at the center of the top wall 112, which allows the sensing mechanism 400 to more effectively sense the echo signals from different areas of the object to be dried.

[0066] In some embodiments of this application, the corners of the four sidewalls 111 and / or the corners between the sidewalls 111 and the bottom wall 113 are rounded, and the radius of the rounded corners is greater than or equal to 20cm.

[0067] In this embodiment, the rounded corner design eliminates sharp edges between adjacent sidewalls 111 and between adjacent sidewalls 111 and bottom wall 113, preventing the material to be dried from getting stuck at the corners and reducing dead corners, making it easier for the material to be dried to turn over during stirring. Optionally, the rounded corner radius is ≥20cm, which makes the inside of the cylinder 100 sufficiently smooth, effectively reducing the phenomenon of the material to be dried getting stuck at the corners and also reducing dead corners.

[0068] In some embodiments of this application, the sensing mechanism 400 includes at least one of an ultra-wideband radar module, a starburst radar sensing module, and a millimeter-wave radar module.

[0069] Ultra-wideband radar modules utilize nanosecond-level pulses, offering high resolution and enabling precise measurement of the echo signal distribution of the material to be dried. Starburst radar sensing modules feature low power consumption and high precision. Millimeter-wave radar modules possess strong anti-interference capabilities, making them suitable for real-time monitoring of the moisture content of the material to be dried. Of course, the sensing mechanism 400 is not limited to the above embodiments; those skilled in the art can select the appropriate mechanism based on actual needs.

[0070] In some embodiments of this application, the operating frequency of the sensing mechanism is 3GHz-100GHz.

[0071] In this application, the operating frequency of the sensing mechanism is set to 3GHz-100GHz. It should be noted that when the operating frequency of the sensing mechanism is below 3GHz, its sensitivity to water is low, and the detection of the echo signal is inaccurate. When the operating frequency of the sensing mechanism is above 100GHz, its sensitivity to water is too high, and the detection of whether a threshold has been reached is inaccurate. Setting the operating frequency of the sensing mechanism to 3GHz-100GHz ensures that its sensitivity to water is moderate, and the detection of the echo signal of the object to be dried is accurate.

[0072] In some embodiments of this application, the stirring mechanism 300 includes a pulsator 310, the top of which is formed with a plurality of blades 311.

[0073] like Figure 1 As shown, the stirring mechanism 300 includes a pulsator 310. For example, the pulsator 310 is driven by a motor. When the motor speed is low, damage to the items to be dried caused by high-speed tumbling can be effectively avoided. Multiple blades 311, such as three blades 311, are formed at the top of the pulsator 310. The pulsator 310 is similar to a washing machine pulsator, and its rotation causes the items to be dried to tumble. The blades 311 are radial or spiral. This shape enhances the tumbling effect on the items to be dried. Optionally, the edges of the blades 311 are rounded, with a radius greater than or equal to 5 mm. This arrangement effectively prevents damage to the items to be dried by the blades 311 during the rotation of the pulsator 310.

[0074] In some embodiments of this application, the outer surface of the impeller 310 is coated with liquid silicone.

[0075] In this embodiment, the liquid silicone is soft, non-toxic, and heat-resistant. When it is coated on the surface of the impeller 310, it can buffer the collision with the object to be dried, reduce the wear of the object to be dried, and prevent metal parts from directly contacting the object to be dried, which could cause scratches or abnormal noises.

[0076] In some embodiments of this application, the drying device further includes an exhaust mechanism 700, which is disposed in the cylinder and whose inlet is connected to the cavity 120.

[0077] like Figure 1 As shown, the exhaust mechanism 700 is disposed on the top wall 112. The inlet of the exhaust mechanism 700 is connected to the cavity 120. Optionally, the exhaust mechanism 700 is an axial flow exhaust mechanism, a centrifugal exhaust mechanism, a mixed flow exhaust mechanism, etc. The exhaust mechanism can remove humid air from the cavity 120, thereby significantly improving the drying speed of the object to be dried.

[0078] In some embodiments of this application, the outer wall of the cylinder 100 is provided with a heat insulation layer 130.

[0079] In this embodiment, the heat insulation layer 130 can be made of polyurethane foam or aerogel felt. The thickness of the heat insulation layer 130 is 10mm-20mm. This thickness can effectively reduce the heat loss from the inside of the cylinder 100 to the outside, improve drying efficiency, and at the same time reduce the temperature of the outer wall of the drying device to prevent burns to the user.

[0080] In some embodiments of this application, the stirring mechanism 300 rotates at a speed of 30-60 revolutions per minute, and the stirring mechanism 300 is capable of periodically rotating in both forward and reverse directions.

[0081] In this embodiment, the stirring mechanism 300 rotates at a speed of 30-60 rpm. This low speed effectively reduces the noise of the drying device and avoids damage to the material to be dried caused by the high-speed rotation of the impeller 310. Furthermore, the stirring mechanism 300 can periodically rotate forward and reverse. For example, it can rotate forward for 30 seconds, pause for 5 seconds, then reverse for 30 seconds, and repeat this cycle; alternatively, it can rotate forward without pausing, and then directly reverse, repeating this cycle. Low-speed forward and reverse rotation allows the material to be dried to be fully loosened, preventing unidirectional rotation from causing the material to clump together. Low-speed forward and reverse rotation also ensures more uniform drying of all parts of the material and reduces the noise of the drying device.

[0082] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0083] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A drying apparatus, characterized by, include: A cylindrical body having an inner wall that forms a cavity; A far-infrared radiation mechanism, comprising a graphene far-infrared emitting film, wherein the graphene far-infrared emitting film is adhered to the inner wall; A stirring mechanism is provided inside the cavity and is used to stir the material to be dried. as well as A sensing mechanism is provided in the cylinder. The sensing device is used to emit electromagnetic wave signals to the object to be dried and receive echo signals, and determine the dry and wet state of the object to be dried based on the echo signals.

2. The drying apparatus according to claim 1, characterized by Also includes: A control mechanism is connected to the far-infrared radiation mechanism, the stirring mechanism, and the sensing mechanism. The control mechanism is used to adjust the power of the far-infrared radiation mechanism and / or the operating state of the stirring mechanism according to the echo signal of the object to be dried.

3. The drying apparatus of claim 2, wherein The control mechanism is configured to increase the radiation power of the far-infrared radiation mechanism to a region when the energy of the echo signal in a certain region of the object to be dried is lower than the energy of the echo signal outside that region.

4. The drying apparatus of claim 1, wherein The cavity is a cuboid, and the inner wall includes four side walls, a top wall, and a bottom wall opposite to the top wall. The graphene far-infrared emitting film is attached to the four side walls and the bottom wall.

5. The drying apparatus of claim 4, wherein The stirring mechanism is located on the bottom wall, which has a hole, and the stirring mechanism is located inside the hole. The graphene far-infrared emitting film is arranged around the stirring mechanism.

6. The drying apparatus of claim 5, wherein The sensing mechanism is located on the top wall.

7. The drying apparatus of claim 4, wherein The corners of the four sidewalls and / or the corners between the sidewalls and the bottom wall are rounded, and the radius of the rounded corners is greater than or equal to 20 cm.

8. The drying apparatus of claim 1, wherein The sensing mechanism includes at least one of an ultra-wideband radar module, a star-flash radar sensing module, and a millimeter-wave radar module.

9. The drying apparatus of claim 1, wherein The agitator includes a pulsator with multiple blades formed on its top.

10. The drying apparatus of claim 9, wherein The outer surface of the impeller is covered with liquid silicone.

11. The drying apparatus of claim 1, wherein The outer wall of the cylinder is provided with a heat insulation layer.

12. The drying apparatus of claim 1, wherein The stirring mechanism rotates at a speed of 30-60 revolutions per minute and can periodically rotate in both forward and reverse directions.

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