A middle air inlet type household convenient drying machine

Abstract

The application relates to a middle air inlet type household convenient drying machine, air inlets are arranged in the middle part of the machine body, and other non-core pneumatic components such as control panels are arranged outside the fluid channel, the path from air suction to air exhaust forms a more short and straight, smooth and efficient airflow air duct, airflow loss is maximally reduced, air speed and air volume are obviously improved, the pneumatic performance and drying efficiency of the drying machine are improved, and working time is shortened. Meanwhile, due to the smooth air duct design, airflow can pass in a more smooth laminar flow state, noise generated due to impact and turbulence is reduced, a more quiet use experience is provided for users, due to the reduced air duct resistance, the running load of the motor is smaller, energy is saved, the service life of the drying agent is prolonged, meanwhile, the compact structure of the household drying machine is maintained, and a more comfortable use experience is brought to users.

Description

Technical Field

[0001] This application relates to the field of dryers, and more particularly to a centrally located, portable household dryer with air intake. Background Technology

[0002] Currently, traditional portable household dryers (such as hair dryers) on the market generally adopt a "coaxial series" air duct structure. The design concept of this structure is to allow airflow to flow in a straight line along the main axis of the device, in order to simplify assembly and reduce costs. Specifically, air is drawn in from the air inlet at the rear of the device and passes through the various key functional components inside in sequence along a straight air duct, and is finally blown out from the air outlet at the front of the device.

[0003] Depending on the arrangement of the internal components, this traditional design mainly manifests in two forms: such as Figure 1 The first type shown involves airflow entering from the rear, passing sequentially through the motor, PCBA mainboard, and heating element, before exiting from the front; as... Figure 2 The second form shown is where the airflow enters from the rear, passes through the PCBA motherboard, motor, and heating element in sequence, and then exits from the front.

[0004] While the aforementioned coaxial series structure offers advantages in manufacturing such as simplicity and ease of assembly, it suffers from an inherent and fundamental physical defect: the functional components within the air duct (especially the PCBA motherboard) are not designed for aerodynamic performance; their irregular shapes and numerous components, when placed directly in the main air duct, severely obstruct airflow. This fundamental defect leads to a series of insurmountable performance problems and a poor user experience, specifically manifested in the following three aspects: First, aerodynamic performance deteriorates, resulting in low drying efficiency. Due to obstacles such as PCBA motherboards in the air intake path, high-speed airflow is severely impeded and disturbed, generating a large amount of turbulence and eddies, causing significant pressure loss (i.e., "airflow loss"). This energy loss directly leads to a significant decrease in the wind speed and air volume at the final air outlet, reducing the overall drying efficiency of the equipment and requiring users to spend more time completing the drying process.

[0005] Secondly, operating noise increases significantly. When high-speed airflow impacts electronic components, connectors, and other irregular obstacles on the PCBA motherboard, it generates high-frequency eddies and shear flows, resulting in unpleasant aerodynamic noise (wind noise). This turbulent noise caused by poor airflow is one of the main sources of noise during equipment operation, greatly affecting user comfort and experience.

[0006] Third, increased motor load affects product lifespan and energy efficiency. To overcome the resistance inside the air duct and "squeeze" air through these obstacles, the motor must operate at a higher load power. Prolonged high load not only increases the overall energy consumption of the machine but also leads to accelerated motor temperature rise and wear, thus speeding up aging and shortening the overall lifespan and reliability of the machine.

[0007] Therefore, there is an urgent need for an innovative air duct design to fundamentally solve the above problems, while maintaining structural compactness and significantly improving the aerodynamic performance, noise reduction level and energy efficiency life of the equipment. Utility Model Content

[0008] The technical problem this application aims to solve is that existing household dryers suffer from reduced aerodynamic performance and low drying efficiency; simultaneously, they experience significantly increased noise during operation, placing a heavy load on the motor and affecting product lifespan and energy efficiency. To address these shortcomings of the prior art, this application provides a centrally located, convenient household dryer with air intake.

[0009] To solve the above-mentioned technical problems, the technical solution adopted in this application is: A centrally located air-inlet type household portable dryer is constructed, including a handle. A through hole is provided in the middle of the handle, which divides the interior of the handle into a first part and a second part. A control board and a power cord connected to the main control board are provided in the first part. A motor and a heating element are provided in the second part. An air outlet is formed at the end of the second part away from the first part. The heating element is placed between the motor and the air outlet. A fluid channel is formed between the through hole and the air outlet. Fluid enters the fluid channel through the through hole under the action of the motor, is heated by the heating element, and is discharged from the air outlet. The fluid does not pass through the first part during movement.

[0010] Preferably, an air inlet assembly is provided at the through hole, and the air inlet assembly is provided with an air inlet hole. The air inlet assembly includes two sets of opposing inner air inlet assemblies and two sets of opposing outer air inlet assemblies. The inner air inlet assemblies are located near one side of the handle, and the outer air inlet assemblies are located outside the inner air inlet assemblies.

[0011] Preferably, the internal air intake assembly includes an internal air intake mesh and internal supports placed at both ends of the internal air intake mesh. The internal supports are fixedly connected to the internal air intake mesh, and the two sets of internal air intake assemblies are connected by screws. The internal air intake mesh is provided with air intake holes.

[0012] Preferably, the external air intake assembly includes an external air intake screen disposed opposite to each other, with external supports provided at both ends of the external air intake screen. The external air intake screen is fixed by the external supports, and the external supports and the external air intake screen are connected by screws. The external air intake assembly is detachable.

[0013] Preferably, a magnet is provided on the outer bracket, and a magnetic ring is provided on the outside of the handle corresponding to the magnet. The external air intake assembly is detachably connected to the magnetic ring by magnetic attraction.

[0014] Preferably, the heating component includes a PTC and heating aluminum frames placed on both sides of the PTC. After the PTC is heated, it transfers heat to the heating aluminum frames, which then contact the fluid and heat the fluid. The heating aluminum frames are wrapped by a mica tube, and the mica tube is covered with a heat insulation tube.

[0015] Preferably, the heating aluminum frame is provided with multiple sets of fins, with gaps between the fins. The gaps are parallel to the fluid channel, and the fluid enters the fluid channel and contacts the side of the fins, thus heating the fluid.

[0016] Preferably, the heating aluminum frame is provided with fixing feet on both sides, and the fixing feet of the upper and lower sets of heating aluminum frames are connected by aluminum frame fasteners. The aluminum frame fasteners provide a pulling force towards the PTC for the two sets of heating aluminum frames. A fuse and a thermostat are provided in the fluid channel.

[0017] Preferably, the second part is connected to an air outlet screen at the end furthest from the first part, the air outlet screen is provided with air outlet holes, and the control board is also connected to an ozone module.

[0018] Preferably, both the first and second parts are covered with mica paper, the mica paper is covered with an outer cylinder, the handle includes a detachably connected left handle and a right handle, and the control panel is provided with a switch button and an adjustment button.

[0019] The beneficial effects of this application are as follows: By placing the air inlet in the middle of the unit and placing non-core pneumatic components such as the control board outside the fluid channel, the fluid's path from intake to exhaust forms a shorter, straighter, and more efficient airflow duct, minimizing airflow loss, significantly improving wind speed and volume, enhancing the dryer's aerodynamic performance and drying efficiency, and shortening operating time. Simultaneously, the streamlined airflow design allows for smoother laminar flow, reducing noise caused by impacts and turbulence, providing a quieter user experience. Furthermore, the reduced airflow resistance lowers the motor's operating load, saving energy, extending the desiccant's lifespan, and maintaining the compact structure of a household dryer, resulting in a more comfortable user experience. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the present application will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1A schematic diagram of the first design in the prior art; Figure 2 A schematic diagram of the structure of the second design in the prior art; Figure 3 A three-dimensional structural diagram of a household portable dryer according to a preferred embodiment of this application; Figure 4 This is a cross-sectional structural diagram of a preferred embodiment of the household portable dryer of this application; Figure 5 This is an exploded structural diagram of a preferred embodiment of the household portable dryer of this application; Figure 6 This is a three-dimensional structural diagram of the air intake assembly according to a preferred embodiment of this application; Figure 7 This is an exploded structural diagram of the air intake assembly according to a preferred embodiment of this application; Figure 8 This is a three-dimensional structural diagram of the heating assembly according to a preferred embodiment of this application; Figure 9 This is an exploded structural diagram of the heating assembly according to a preferred embodiment of this application. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this application. Obviously, the described embodiments are some embodiments of this application, but not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.

[0022] A preferred embodiment of this application provides a centrally air-inlet type household portable dryer; such as... Figures 3-5As shown, the device includes a handle 19, which can be formed by detachably connected left and right handles. A through hole 190 is provided in the middle of the handle, dividing it into two parts. The first part is for hand gripping and houses a control board 12 and a power cord 122 connected to the control board. The power cord supplies power to the control board to enable the dryer's operation. The control board also has a switch button 120 and an adjustment button 121. The switch button turns the dryer on or off, and the adjustment button adjusts the dryer's operating mode, including adjusting the fan speed and heating temperature. An ozone module 123 is also connected to the control board, allowing the ozone module to release sample, thus sterilizing the desiccant during drying. The second part forms a fluid channel 18. An air inlet assembly 30 is connected to the through hole, and the air inlet assembly has an air inlet hole 17. An air outlet hole 16 is located on the side of the handle away from the through hole. Fluid enters the fluid channel 18 through the air inlet hole and exits through the air outlet hole 16. An air outlet screen 15 can be installed at the air outlet to filter impurities from entering the fluid channel. The second part of the handle also houses a motor 14 and a heating element 20. The heating element is positioned between the motor and the air outlet. The motor draws fluid into the fluid channel through the air inlet component and directs the fluid towards the heating element. The fluid is then heated by the heating element and discharged through the air outlet for drying. An air outlet screen can be installed at the air outlet for filtration. To prevent the heated handle from affecting grip, both the first and second parts of the handle are covered with mica paper 13 for heat insulation. A front outer cylinder 10 and a rear outer cylinder 11 are installed outside the mica paper. The air inlet 17 has been moved from the traditional rear of the equipment to the side of the dryer, preventing fluid from entering the fluid channel and contacting components such as the main board. This allows the motor position to directly correspond to the air inlet position, enabling unobstructed intake of external air, improving pneumatic performance and increasing drying efficiency. Furthermore, the closer proximity of the air inlet to the motor reduces interference within the fluid channel, lowering the motor load and extending product lifespan. After being heated by the heating components, the fluid is discharged. At the same time, the control board and other components are completely separated from the fluid channel, reducing the noise during operation. While maintaining the compact structure of the dryer, the aerodynamic performance, noise reduction level and energy efficiency life of the dryer are significantly improved.

[0023] Specifically, such as Figures 6-7As shown, the air intake assembly 30 includes a magnetic ring 303 placed outside the handle. Two sets of magnetic rings are provided, respectively placed between the first and second parts of the handle. An inner air intake mesh 302 is provided outside the magnetic ring. The inner air intake mesh is fixed by an inner bracket 304. An outer air intake mesh 301 is provided outside the inner bracket. The outer air intake mesh is fixed by an outer bracket 300. Since the air intake assembly is located in the middle of the handle, in order to facilitate the disassembly of the air intake assembly 30, two sets of both the inner and outer air intake meshes 302 are provided. The two sets surround the outside of the handle 19. At the same time, two sets of inner brackets 304 are provided at both ends of each set of inner air intake meshes 302. The inner air intake mesh 302 can be fixedly connected to the two sets of inner brackets 304. The two sets of inner brackets 304 can be fixed with screws so that the inner air intake mesh 302 surrounds the outer surface of the handle 19. Small air intake holes 17 are provided on the inner air intake mesh 302. The air intake holes on the inner air intake mesh are not specifically shown in the figure. The outer bracket 300 is also fixedly connected to the outer air inlet mesh 301. At the same time, each set of outer brackets 300 is equipped with a magnet 305. The attraction between the magnet 305 and the magnetic ring 303 can realize the installation of the outer air inlet mesh 300 on the outside of the inner air inlet mesh 302. It also facilitates the disassembly of the outer air inlet mesh. Multiple sets of air inlet holes are also provided on the outer air inlet mesh. Therefore, the air intake assembly 30 includes two sets of external air intake assemblies and two sets of internal air intake assemblies. The two sets of internal air intake assemblies surround the outside of the handle, and the two sets of external air intake assemblies surround the outside of the internal air intake assemblies. Since both the internal air intake mesh 302 and the external air intake mesh 301 are provided with air intake holes, the fluid can pass through the air intake holes and then through the through holes into the fluid channel. This reduces the distance between the motor and the air intake holes, making the path of air from intake to exhaust extremely short and straight. Moreover, there are no other components obstructing the path between the motor and the air intake holes, almost eliminating all unnecessary obstacles. The path is smoother, minimizing airflow loss and significantly improving wind speed and air volume, thereby improving drying efficiency, shortening working time, and greatly improving pneumatic efficiency. At the same time, the smooth air duct design allows the airflow to pass through the dryer in a smoother laminar flow state, reducing noise caused by impact and turbulence at the source. The noise is lower, providing users with a quieter user experience. Furthermore, due to the drastically reduced airflow resistance, the motor can achieve or even exceed its original performance specifications without operating under high load, resulting in better aerodynamic performance, energy savings, and a more comfortable working environment for the motor, effectively extending the overall lifespan of the product. The external air intake assembly is also easy to disassemble and clean via magnetic attachment, and reassembly is even more convenient after disassembly.

[0024] Furthermore, such as Figures 8-9As shown, the heating assembly 20 includes a heating source, which can be a PTC 203. Heating aluminum frames 202 are provided on both the upper and lower sides of the heating source. Multiple sets of fins 208 are provided on the heating aluminum frames, forming fluid channels 18 between them. This increases the contact area between the fluid entering the fluid channels and the fins, resulting in faster heating and more uniform heating. A mica tube 201 is fitted over the heating aluminum frame to insulate against heat. A heat insulation tube 200 is also provided outside the mica tube, through which the heating assembly is installed inside the handle. Fixing feet 207 are provided at both ends of the heating aluminum frame. The upper and lower sets of heating aluminum frames 202 are connected and fixed by aluminum frame clips 204, ensuring tighter contact with the PTC and improving heat transfer from the PTC to the heating aluminum frame. A temperature controller 206 can be installed in the fluid channel to detect the fluid temperature, and a fuse 205 is used to enhance the safety of the heating assembly. This heating component ensures more uniform heating of the fluid as it passes through it. The gaps between the fluid fins are parallel to the fluid channel, preventing the fins from obstructing the fluid flow. This allows for smoother fluid movement, and the fluid is heated by contacting the sides of the fins during movement, resulting in higher heating efficiency, more uniform fluid heating, and better performance of the blown hot fluid.

[0025] When the dryer of this application is in use, after being connected to the mains power via the power cord 122, the pneumatic desiccant is activated by pressing the switch button 120. At this time, the motor 14 works to draw air into the fluid channel through the air inlet hole 17 on the air inlet assembly 30. Under the action of the motor, the drawn-in fluid is blown towards the heating assembly. After the PTC 203 of the heating assembly heats up, it transfers the heat to the heating aluminum frame 202, which heats the fins 208. During the movement, the fluid passing between the fins is heated by contact with the fins. Under the action of the motor, it is discharged through the air outlet 16 for drying. The fluid can be discharged through only the motor and the heating assembly, with fewer contacting parts, better pneumatic performance, and higher drying efficiency.

[0026] It should be understood that this application has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this application. Furthermore, based on the teachings of this application, these features and embodiments can be modified to suit specific circumstances and materials without departing from the spirit and scope of this application. Therefore, this application is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this application.

Claims

1. A centrally located, portable household dryer with air intake, comprising a handle, wherein a through hole is provided in the center of the handle, the through hole dividing the interior of the handle into a first part and a second part, wherein a control board and a power cord connected to the main control board are disposed in the first part, characterized in that: The second part is equipped with a motor and a heating component. An air outlet is formed at the end of the second part away from the first part. The heating component is placed between the motor and the air outlet. A fluid channel is formed between the through hole and the air outlet. The fluid enters the fluid channel through the through hole under the action of the motor, is heated by the heating component, and is discharged from the air outlet. The fluid does not pass through the first part when it moves.

2. The household portable dryer according to claim 1, characterized in that: An air intake assembly is provided at the through hole, and an air intake hole is provided on the air intake assembly. The air intake assembly includes two sets of opposing inner air intake assemblies and two sets of opposing outer air intake assemblies. The inner air intake assembly is located near one side of the handle, and the outer air intake assembly is located outside the inner air intake assembly.

3. The household portable dryer according to claim 2, characterized in that: The internal air intake assembly includes an internal air intake mesh and internal brackets placed at both ends of the internal air intake mesh. The internal brackets are fixedly connected to the internal air intake mesh. The internal brackets of the two sets of internal air intake assemblies are connected by screws. The internal air intake mesh is provided with air intake holes.

4. The household portable dryer according to claim 2, characterized in that: The external air intake assembly includes an external air intake screen arranged opposite to each other. Both ends of the external air intake screen are provided with external brackets, which fix the external air intake screen. The external brackets and the external air intake screen are connected by screws, and the external air intake assembly is detachable.

5. The household portable dryer according to claim 4, characterized in that: The outer bracket is equipped with a magnet, and a magnetic ring is provided on the outside of the handle corresponding to the magnet. The external air intake assembly is detachably connected to the magnetic ring by magnetic attraction.

6. The household portable dryer according to any one of claims 1-5, characterized in that: The heating component includes a PTC and heating aluminum frames placed on both sides of the PTC. After the PTC is heated, it transfers heat to the heating aluminum frames, which then come into contact with the fluid and heat the fluid. The heating aluminum frames are wrapped by a mica tube, and the mica tube is covered with a heat insulation tube.

7. The household portable dryer according to claim 6, characterized in that: The heating aluminum frame is provided with multiple sets of fins, with gaps between the fins. The gaps are parallel to the fluid channel, and the fluid enters the fluid channel and contacts the side of the fin, thus heating the fluid.

8. The household portable dryer according to claim 6, characterized in that: The heating aluminum frame is provided with fixed feet on both sides. The fixed feet of the upper and lower sets of heating aluminum frames are connected by aluminum frame fasteners. The aluminum frame fasteners provide a pulling force towards the PTC for the two sets of heating aluminum frames. A fuse and a thermostat are provided in the fluid channel.

9. The household portable dryer according to claim 1, characterized in that: The second part is connected to an air outlet screen at the end furthest from the first part. The air outlet screen is provided with air outlet holes. The control board is also connected to an ozone module.

10. The household portable dryer according to claim 9, characterized in that: Both the first and second parts are covered with mica paper, and the mica paper is covered with an outer cylinder. The handle includes a detachable left handle and a right handle. The control panel is equipped with a switch button and an adjustment button.

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