Drying device and wind resistance detection method thereof

Abstract

The invention relates to the technical field of clothes processing equipment, and particularly provides a drying device and a wind resistance detection method thereof. The drying device aims at solving the problems that in the prior art, airflow turbulence is likely to happen to an air supply part of a drying device, and noise is likely to happen. Therefore, the drying device comprises a volute and a centrifugal fan, the volute comprises an upper cover and a lower cover, an air inlet is formed in the upper cover, an air collection chamber is formed between the upper cover and the lower cover, the centrifugal fan is arranged in the air collection chamber, an air outlet is formed in the spiral air supply direction of the air collection chamber, and a volute tongue is arranged on the inner side of the air outlet. And an inclined ramp is arranged on the side wall of the volute tongue. Based on the structural arrangement, the inclined ramp is arranged on the side wall of the volute tongue, so that airflow rotational flow output by the centrifugal fan is less, the airflow rotational flow cannot directly impact on the volute tongue, and noise of airflow output of the drying device is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of clothing processing equipment, and specifically provides a drying device and a wind resistance detection method thereof. Background Art

[0002] With the development of social economy, clothes processing equipment with drying function has been widely used, especially in areas with high humidity. The drying function of clothes processing equipment with drying function meets people's urgent need to dry clothes. The drying device usually uses heat pump compression to pressurize and heat the refrigerant. The refrigerant is sent to the condenser to release heat. The condenser is connected to the air path in the dryer to release dry air. The refrigerant enters the capillary pressure and temperature from the condenser and then enters the evaporator. The evaporator is also connected to the drying air path to turn the humid hot air into dry cold air. The operation of the above refrigerant, combined with the tumbling of the drum in the clothes drying equipment and the air supply of the drying fan, achieves the effect of drying clothes.

[0003] In the prior art, the drying device is connected to the air duct to supply air to the dryer. Since the diameter of the air supply part from the rear cover of the air duct to the drying drum is larger than that of the volute part, the wind delivered by the fan blows forward along the volute, which can easily cause airflow turbulence at the air supply part, forming turbulence, affecting the air volume entering the drum, and also easily generating noise, affecting the user experience.

[0004] The art requires a drying device and a wind resistance detection method thereof to solve the above technical problems. Summary of the invention

[0005] The present invention aims to solve the above technical problem, that is, in the prior art, the drying device is prone to air flow turbulence at the air supply position and noise.

[0006] In a first aspect, the present invention provides a drying device, the drying device comprising a volute and a centrifugal fan, the volute comprising an upper cover and a lower cover,

[0007] The upper cover is provided with an air inlet, an air collecting chamber is formed between the upper cover and the lower cover, and the centrifugal fan is arranged in the air collecting chamber.

[0008] An air outlet is provided along the spiral air supply direction of the air collecting chamber.

[0009] A volute tongue is arranged inside the air outlet, and an inclined ramp is arranged on the side wall of the volute tongue.

[0010] In a specific implementation of the above drying device, the inclined ramp includes a first splicing portion and a second splicing portion, the first splicing portion is arranged on the upper cover, and correspondingly the second splicing portion is arranged on the lower cover.

[0011] In a specific implementation of the above drying device, a step is provided on the second splicing portion, and the first splicing portion abuts against the step.

[0012] In a specific implementation of the above drying device, a baffle is provided on the side wall of the step.

[0013] In a specific implementation of the above drying device, the inclination angle of the baffle is set to 10-45 degrees.

[0014] In a specific implementation of the above drying device, a screw avoidance hole is provided on the second splicing portion.

[0015] In a specific embodiment of the above drying device, the drying device includes a guide plate,

[0016] The guide plate is connected to the air outlet.

[0017] The guide plate is provided with a guide device.

[0018] In a specific embodiment of the drying device, the guide device includes a first guide rib and a second guide rib that are arranged opposite to each other.

[0019] The first guide rib is arranged along the airflow direction.

[0020] The second guide rib is bent, and the distance between the second guide rib and the first guide rib decreases first and then increases.

[0021] In a specific embodiment of the drying device, the guide device further includes a third guide rib.

[0022] The third guide rib is arranged on one side of the first guide rib and the second guide rib.

[0023] In the case of adopting the above technical solution, the drying device provided by the present invention includes a volute and a centrifugal fan, the volute includes an upper cover and a lower cover, the upper cover is provided with an air inlet, an air collecting chamber is formed between the upper cover and the lower cover, the centrifugal fan is arranged in the air collecting chamber, an air outlet is arranged along the spiral air supply direction of the air collecting chamber, a volute tongue is arranged on the inner side of the air outlet, and an inclined ramp is arranged on the side wall of the volute tongue. Based on the above structural setting, by arranging the inclined ramp on the side wall of the volute tongue, the airflow output by the centrifugal fan has less swirl, so it will not directly hit the volute tongue, thereby reducing the noise of the airflow output of the drying device.

[0024] Furthermore, the drying device provided by the present invention defines a first splicing portion and a second splicing portion, wherein the first splicing portion and the second splicing portion cooperate with each other so that the upper cover and the lower cover are buckled together.

[0025] Furthermore, the drying device provided by the present invention stipulates that the second splicing part is provided with a step to affect the impact force of the airflow hitting the volute tongue, avoid the airflow directly hitting the surface of the volute tongue and produce impact sound, and achieve the effect of reducing noise.

[0026] Furthermore, the drying device provided by the present invention defines a baffle on the side wall of the step to enhance the connection strength between the step and the inclined ramp.

[0027] Furthermore, the drying device provided by the present invention limits the inclination angle of the inclined ramp to be set to 10-45 degrees to achieve the best noise reduction effect.

[0028] Furthermore, the drying device provided by the present invention is provided with a guide plate, so that the gas flows from the air outlet to the air duct along the direction of the guide plate.

[0029] Furthermore, the drying device provided by the present invention is provided with a first guide rib and a second guide rib, so that the air inlet area of ​​the airflow entering the guide plate is smaller and the air outlet area is larger, thereby reducing the noise when the airflow flows out.

[0030] Furthermore, the drying device provided by the present invention is also provided with a third guide rib for further limiting the flow direction of the gas to achieve the effect of reducing noise.

[0031] In a second aspect, the present invention further provides a method for detecting wind resistance of a drying device, wherein the drying device further comprises an air duct and a drying box, wherein the air duct is connected to the turbine fan and the drying box respectively, a filter is provided between the air duct and the drying box, and a wind resistance detection device and a pneumatic cleaning device are further provided on the air duct, wherein the detection method comprises:

[0032] Start the drying module;

[0033] Get wind resistance value;

[0034] If the wind resistance value is greater than a threshold value, controlling the pneumatic cleaning device to start;

[0035] If the wind resistance value is less than or equal to a threshold value, the pneumatic cleaning device is controlled to be closed.

[0036] Based on the above control method, when the drying device starts the drying module, the wind resistance detection device automatically detects the wind resistance value of the current filter. It can be understood that when the wind resistance value is small, it means that the ventilation state of the current filter is good; when the wind resistance value is large, it means that the ventilation state of the current filter is poor. Therefore, when the wind resistance value is greater than the threshold, the pneumatic cleaning device is controlled to start to clean the filter to maintain the cleanliness of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0038] Figure 1 It is a structural schematic diagram of the upper cover of the drying device provided by the present invention;

[0039] Figure 2 It is a structural schematic diagram of the lower cover of the drying device provided by the present invention;

[0040] Figure 3 It is a structural schematic diagram of a guide plate in a drying device provided by the present invention;

[0041] Figure 4 It is a flow chart of the steps of the wind resistance detection method of the drying device of the present invention. Reference numerals:

[0042] 11. Upper cover; 111. Air inlet; 12. Lower cover; 13. Air collecting chamber; 131. Air outlet; 14. Volute tongue; 151. First joint; 152. Second joint; 153. Step; 154. Support surface; 155. Baffle; 156. Screw avoidance hole; 157. First abutting surface; 158. Second abutting surface; 2. Guide plate; 21. Guide device; 211. First guide rib; 212. Second guide rib; 213. Third guide rib. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios. For example, although this specific embodiment is described in conjunction with the situation where the drying device is applied to a clothing care machine, the drying device of the present invention can obviously also be used in other devices. Such changes in the application scenarios do not deviate from the basic principles of the present invention and fall within the scope of protection of the present invention.

[0044] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0045] It should be noted that, in the description of the preferred embodiment, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be directly connected, it can also be indirectly connected through an intermediate medium, it can also be connected inside two elements, and these cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0046] With the development of social economy, clothes processing equipment with drying function has been widely used, especially in areas with high humidity. The drying function of clothes processing equipment with drying function meets people's needs for drying clothes in a hurry. At present, the clothes drying equipment on the market usually includes heat pump type and condensation type. The heat pump drying uses the heat pump to compress the refrigerant to pressurize and heat it. The refrigerant is sent to the condenser to release heat. The condenser is connected to the air path in the dryer to release dry air. The refrigerant enters the capillary from the condenser and the pressure and temperature drop rapidly, and then enters the evaporator. The evaporator is also connected to the drying air path to turn the humid hot air into dry cold air. The operation of the above refrigerant, combined with the tumbling of the drum in the clothes drying equipment and the air supply of the drying fan, achieves the effect of drying clothes. The drying effect of this equipment is good, but the equipment cost is relatively high; the condensation drying uses the heater to heat the air to turn it into dry hot air and send it into the drum in the clothes drying equipment. After passing through the clothes, it becomes humid hot air. After the humid hot air is introduced into the condenser, it becomes dry cold air. Then, through the action of the fan, the dry cold air is sent to the heater for heating and sent into the drum. This cycle continuously removes moisture from the clothes to achieve the purpose of drying clothes.

[0047] In the prior art, the drying device is connected to the air duct to supply air to the dryer. Since the diameter of the air supply part from the rear cover of the air duct to the drying drum is larger than that of the volute part, the wind delivered by the fan blows forward along the volute, which can easily cause airflow turbulence at the air supply part, forming turbulence, affecting the air volume entering the drum, and also easily generating noise, affecting the user experience.

[0048] First, see Figure 1 and Figure 2 ,in, Figure 1 It is a schematic diagram of the structure of the upper cover of the drying device provided by the present invention. Figure 2 Schematic diagram of the structure of the lower cover of the drying device provided by the present invention. Figure 1-Figure 2As shown, the drying device includes a volute and a centrifugal fan (not shown in the figure), the volute includes an upper cover 11 and a lower cover 12, the upper cover 11 is provided with an air inlet 111, an air collecting chamber 13 is formed between the upper cover 11 and the lower cover 12, the centrifugal fan is arranged in the air collecting chamber 13, an air outlet 131 is arranged along the spiral air supply direction of the air collecting chamber 13, a volute tongue 14 is arranged on the inner side of the air outlet 131, and an inclined ramp is arranged on the side wall of the volute tongue 14. Based on the above structural arrangement, air enters through the air inlet, and a high-pressure area is formed in the air collecting chamber 13 by the centrifugal fan. When the airflow flows through the volute tongue 14, it can flow outward along the volute tongue 14, reducing the axial rotating vortex formed in the volute tongue 14 area, reducing the phenomenon of impacting the volute tongue 14, and achieving the effect of smooth air outlet and reduced fan noise. By providing an inclined ramp on the side wall of the volute tongue 14, the airflow output by the centrifugal fan has less swirl and will not directly hit the volute tongue 14, thereby reducing the noise of the airflow output of the drying device.

[0049] The design of the drying device has the following effects: efficient drying: the device introduces air into the air collecting chamber 13 through a centrifugal fan, and forms a spiral air supply in the air collecting chamber 13, and uses centrifugal force to efficiently send out the air. This design can provide strong wind force, promote air flow during the drying process, and speed up the drying speed of the items; uniform drying: the volute tongue 14 is set on the inner side of the air outlet 131, and can guide the outflowing hot air to be evenly distributed in the drying space through the form of an inclined ramp. This can ensure that each area on the surface of the item is dried by the same hot air, avoiding local drying or unevenness; efficient energy utilization: the design of the volute structure and the existence of the air collecting chamber 13 enable the outflowing hot air to be fully utilized and redirected into the drying space. This can reduce the waste of heat energy and improve energy utilization efficiency; stable wind flow: the structure inside the volute and the setting of the volute tongue 14 and the inclined ramp can effectively control the flow direction and speed of the hot air, avoiding wind flow turbulence or crossover in the drying space. This can maintain the stability of the hot air and increase the stability and reliability of the drying effect.

[0050] Specifically, as a preferred embodiment, the inclined ramp includes a first splicing portion 151 and a second splicing portion 152, wherein the first splicing portion 151 is arranged on the upper cover 11, and the second splicing portion 152 is arranged on the lower cover 12 accordingly. The design of the inclined ramp adopts a splicing method. By installing the first splicing portion 151 and the second splicing portion 152, the upper cover 11 and the lower cover 12 of the volute can be conveniently connected. This splicing structure makes the assembly and disassembly of the device more convenient, which is helpful for daily maintenance and cleaning. At the same time, the structure also makes the inclined ramp and the overall structure of the volute tightly connected, stable and reliable, so as to effectively keep the position of the inclined ramp fixed and reduce the deviation or looseness caused by vibration or movement during use. It should be noted that the present invention does not impose any restrictions on the specific structure and setting size of the first splicing portion 151 and the second splicing portion 152. It only needs to meet the first splicing portion 151 and the second splicing portion 152 can be buckled. Those skilled in the art can set it according to actual use requirements.

[0051] In this preferred embodiment, a step 153 is provided on the second splicing part 152, and the first splicing part 151 abuts against the step 153. The step 153 is provided on the second splicing part 152, which makes the structure of the inclined ramp more stable. The step 153 provides a flat support surface 154 for supporting the connection and abutment of the second splicing part 152. Through the setting of the step 153, the vertical alignment between the first splicing part 151 and the second splicing part 152 can be maintained, and the connection stability between them is enhanced. This connection method ensures the stability of the overall structure of the inclined ramp and the volute, prevents it from loosening or shifting during use, and ensures the reliability and safety of the drying device. It should be noted that the present invention does not impose any restrictions on the specific structure and setting size of the step 153, and those skilled in the art can set it according to actual use requirements.

[0052] In this preferred embodiment, a baffle 155 is provided on the side wall of the step. The baffle 155 can also optimize the drying effect, guide and concentrate the hot air, limit the range of hot air loss, and thus increase the efficiency of heat energy transfer, improve the drying speed and uniformity, and save energy. Preferably, the inclination angle of the baffle 155 is set to 10-45 degrees.

[0053] Correspondingly, the first joint portion 151 is provided with a first abutting surface 157 and a second abutting surface 158 , wherein the first abutting surface 157 is in contact with the baffle 155 of the second joint portion 152 , and the second abutting surface 158 is in contact with the supporting surface 154 of the second joint portion 152 .

[0054] In this preferred embodiment, a screw avoidance hole 156 is provided on the second splicing part 152. The setting of the screw avoidance hole 156 can accommodate the screw head or other protruding parts to avoid obstructing or interfering with the normal operation of the device. The screw avoidance hole 156 provides additional space for the screw or other protruding parts to avoid interference between them and other parts of the second splicing part 152. At the same time, by providing the screw avoidance hole 156, unnecessary vibration, friction or interference caused by the screw or other protruding parts can be avoided, thereby reducing the impact on the normal operation of the device. This helps to maintain the stability of the device and the consistency of performance. It should be noted that the present invention does not impose any restrictions on the specific structure and setting size of the screw avoidance hole 156. It is only necessary to meet the requirement that the screw avoidance hole 156 accommodates the screw head or other protruding parts. Those skilled in the art can set it according to actual use requirements. For example, the screw avoidance hole 156 can be set to a circular shape.

[0055] In this preferred embodiment, see Figure 3 , Figure 3 Schematic diagram of the structure of the guide plate in the drying device provided by the present invention. Figure 3 As shown, the drying device provided by the present invention also includes a guide plate 2, which is connected to the air outlet 131, and a guide device 21 is provided on the guide plate 2. By providing the guide plate 2, the gas flows from the air outlet 131 to the air duct along the direction of the guide plate 2. When the air duct rear cover is fixedly connected to the guide plate 2, the air outlet and the guide device 21 form a corresponding air supply channel, so that the wind derived from the centrifugal fan enters the inner barrel of the clothing processing device through the guide device 21. The guide device 21 can prevent the wind from forming turbulence or turbulence in the wider air duct rear cover, reduce noise, and obtain a larger air supply volume. It should be noted that the present invention does not impose any restrictions on the specific structure and setting size of the guide plate 2, and those skilled in the art can set it according to actual use requirements.

[0056] In this preferred embodiment, the guide device 21 includes a first guide rib 211 and a second guide rib 212 that are arranged opposite to each other. The first guide rib 211 is arranged along the airflow direction, the second guide rib 212 is arranged in a curved manner, and the distance between the second guide rib 212 and the first guide rib 211 decreases first and then increases. This arrangement makes the air inlet area of ​​the airflow entering the guide plate 2 smaller and the air outlet area larger, thereby making the noise lower when the airflow flows out.

[0057] In this preferred embodiment, the first guide rib 211 is a thin plate-like structure, which is prone to vibration under the blowing of wind, resulting in noise, and is also easily damaged after long-term use. Therefore, the second guide rib 212 is arranged on the opposite side of the first guide rib 211, which can also effectively increase the connection strength between the first guide rib 211 and the guide plate 2, avoid vibration during operation, reduce the working noise of the clothing processing equipment, and increase the service life of the guide plate 2. It should be noted that the present invention does not impose any restrictions on the specific structure and setting size of the first guide rib 211 and the second guide rib 212, and those skilled in the art can set them according to actual use requirements.

[0058] In this preferred embodiment, the flow guide device 21 also includes a third flow guide rib 213, which is arranged on one side of the first flow guide rib 211 and the second flow guide rib 212, further limiting the flow direction of the gas to achieve the effect of reducing noise. Among them, the first flow guide rib 211 and the second flow guide rib 212 are arranged along the direction of the flow of the airflow, and the third flow guide rib 213 is arranged along the direction of blocking the flow of the airflow, so as to reduce the airflow intensity in the flow guide device 21, thereby achieving noise reduction. Similarly, the present invention does not impose any restrictions on the specific structure and setting size of the third flow guide rib 213, and those skilled in the art can set it according to actual use requirements.

[0059] Based on the above structural arrangement, the first guide rib 211 and the second guide rib 212 are arranged along the direction of the airflow, which can guide and control the airflow. These guide ribs guide the gas flow and reduce the turbulence and vortex phenomenon of the flow by limiting the shape and position. In this way, the dynamic pressure of the airflow can be reduced and the generation of noise can be reduced. The third guide rib 213 is arranged along the flow direction of the blocked airflow to further limit and affect the flow of the airflow and reduce the intensity of the airflow in the guide device 21. By reducing the energy and speed of the airflow, the generation of noise will also be reduced accordingly, thus achieving the effect of reducing noise. At the same time, through the arrangement mode and direction of different guide ribs, the guide device 21 can comprehensively control the flow of the airflow and the generation of noise. The arrangement of the first guide rib 211 and the second guide rib 212 guides the airflow, reduces turbulence and vortex, and reduces the initial generation of noise, while the arrangement of the third guide rib 213 limits the intensity of the airflow in the flow direction of the blocked airflow, further reducing the noise, and through the synergistic effect of multiple guide ribs, the optimization control of the airflow and noise in the guide device is achieved.

[0060] In summary, the flow guide device 21 limits the flow direction of the gas and reduces the chance of noise generation through the design and arrangement of the first flow guide rib 211, the second flow guide rib 212 and the third flow guide rib 213. This arrangement makes the airflow more stable, reduces the formation of turbulence and vortex, and reduces the airflow intensity in the flow guide device 21, thereby effectively achieving the effect of noise reduction.

[0061] In addition, the present invention also provides a method for detecting wind resistance of a drying device. Figure 4 , Figure 4 The figure is a flow chart of the steps of the wind resistance detection method of the drying device of the present invention, wherein the drying device further comprises an air duct and a drying box, the air duct is connected to the centrifugal fan and the drying box respectively, a filter is arranged between the air duct and the drying box, and a wind resistance detection device and a pneumatic cleaning device are also arranged on the air duct. Figure 4 As shown, based on the drying device in the above embodiment, the wind resistance detection method of the present invention mainly includes the following steps:

[0062] S1: Start the drying module;

[0063] S2: Obtain wind resistance value;

[0064] S3: If the wind resistance value is greater than the threshold, the pneumatic cleaning device is controlled to start;

[0065] S4: If the wind resistance value is less than or equal to the threshold, the pneumatic cleaning device is controlled to be closed.

[0066] Based on the above control method, when the drying device starts the drying module, the wind resistance detection device automatically detects the wind resistance value of the current filter. It can be understood that when the wind resistance value is small, it means that the ventilation state of the current filter is good; when the wind resistance value is large, it means that the ventilation state of the current filter is poor. Therefore, when the wind resistance value is greater than the threshold, the pneumatic cleaning device is controlled to start to clean the filter to maintain the cleanliness of the filter.

[0067] It should be noted that the above-mentioned implementation mode is only used to illustrate the principle of the present invention and is not intended to limit the scope of protection of the present invention. Without departing from the principle of the present invention, those skilled in the art can adjust the above-mentioned structure so that the present invention can be applied to more specific application scenarios.

[0068] In summary, the present invention has been made into actual samples and tested for multiple times as described in the specification and the drawings. From the results of the test, it can be proved that the present invention can achieve its intended purpose, and its practical value is beyond doubt. The above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention in any form. Any person with ordinary knowledge in the technical field, if it does not depart from the scope of the technical features of the present invention, uses the equivalent embodiments of the technical content disclosed by the present invention to make partial changes or modifications, and does not depart from the technical features of the present invention, all still fall within the scope of the technical features of the present invention.

[0069] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle 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 these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A drying device, characterized in that: The drying device comprises a volute and a centrifugal fan, wherein the volute comprises an upper cover and a lower cover. The upper cover is provided with an air inlet, an air collecting chamber is formed between the upper cover and the lower cover, and the centrifugal fan is arranged in the air collecting chamber. An air outlet is provided along the spiral air supply direction of the air collecting chamber. A volute tongue is arranged inside the air outlet, and an inclined ramp is arranged on the side wall of the volute tongue.

2. The drying device according to claim 1, characterized in that: The inclined ramp includes a first splicing portion and a second splicing portion, wherein the first splicing portion is arranged on the upper cover, and correspondingly, the second splicing portion is arranged on the lower cover.

3. The drying device according to claim 2, characterized in that: The second splicing portion is provided with a step, and the first splicing portion abuts against the step.

4. The drying device according to claim 3, characterized in that: A baffle is arranged on the side wall of the step.

5. The drying device according to claim 4, characterized in that: The inclination angle of the baffle is set to 10-45 degrees.

6. The drying device according to claim 3, characterized in that: A screw avoidance hole is arranged on the second splicing portion.

7. The drying device according to claim 1, characterized in that: The drying device comprises a guide plate, The guide plate is connected to the air outlet. The guide plate is provided with a guide device.

8. The drying device according to claim 7, characterized in that: The flow guiding device comprises a first flow guiding rib and a second flow guiding rib which are arranged opposite to each other. The first guide rib is arranged along the airflow direction. The second guide rib is bent, and the distance between the second guide rib and the first guide rib decreases first and then increases.

9. The drying device according to claim 8, characterized in that: The flow guiding device further comprises a third flow guiding rib, The third guide rib is arranged on one side of the first guide rib and the second guide rib.

10. A method for detecting wind resistance of a drying device according to any one of claims 1 to 9, wherein the drying device further comprises an air duct and a drying box, wherein the air duct is connected to the centrifugal fan and the drying box respectively, a filter is provided between the air duct and the drying box, and a wind resistance detection device and a pneumatic cleaning device are also provided on the air duct, characterized in that: The detection method comprises: Start the drying module; Get wind resistance value; If the wind resistance value is greater than a threshold value, controlling the pneumatic cleaning device to start; If the wind resistance value is less than or equal to a threshold value, the pneumatic cleaning device is controlled to be closed.

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