Diameter-adjustable wedge atomization water-cooling electric fan

Abstract

The invention belongs to the technical field of electric fans, and discloses a diameter-adjustable wedge atomization water-cooling electric fan which comprises a front cover, a middle cover and a rear cover which are used for gas diversion and protection. The supporting base is used for supporting the rack; the blade comprises a hollow fan blade, a conveying pipe, a hollow hub cavity, a hub rotating shaft, an atomization nozzle and a sliding block circular ring, and serves as a power element and an atomization generation piece; the invention provides an electric fan device integrating variable-diameter airflow adjustment, double-atomization humidification and motor water-cooling heat dissipation, and the electric fan device is characterized in that continuous and accurate adjustment of an airflow mode and the air speed is achieved through a variable-diameter flow guide structure, and the atomization uniformity is improved by combining the double atomization technology of centrifugal natural atomization and wedge forced atomization; motor heat dissipation and atomization liquid supply are synchronously achieved through a water cooling circulation system, the structure is simplified, and meanwhile the use experience is optimized.

Description

Technical Field

[0001] This invention belongs to the field of electric fan technology, and particularly relates to an adjustable diameter and wedge-shaped atomizing water-cooled electric fan. Background Technology

[0002] In the current electric fan industry, wind speed adjustment mostly relies on motor speed control and lacks flow pattern variation capabilities, resulting in limited adjustment precision and insufficient airflow stability. Fans with atomization functions typically require an additional independent atomization device, which not only increases energy consumption and structural complexity but also easily leads to uneven atomization particles. Furthermore, there is a lack of efficient solutions to the temperature rise caused by prolonged high-speed motor operation, which can easily lead to motor performance degradation and shortened lifespan. In addition, the structural design of traditional fans often struggles to achieve synergistic optimization of wind speed adjustment, flow pattern variation, atomization effect, and heat dissipation performance, limiting the overall user experience.

[0003] In existing technologies, the wind speed control of mainstream electric fans relies heavily on adjusting the motor speed as a single variable, lacking collaborative optimization methods for the airflow channel. Their speed adjustment is mostly set as discrete speed settings, making it difficult to achieve continuous and precise wind speed switching, and the wind speed difference between adjacent speed settings is large, easily resulting in "wind speed too high or too low". The pain points of using traditional electric fans are that simply changing the motor speed can easily disrupt the stability of airflow. Sudden increases or decreases in speed can lead to turbulent and shearing airflow, affecting the uniformity of air delivery and potentially causing additional noise from airflow impacting the casing. Frequent speed changes can also exacerbate motor load fluctuations, indirectly increasing energy consumption and mechanical losses. Traditional electric fans with atomization functions generally require an additional independent atomization module, which needs to be configured with a separate power supply and control unit. This increases structural complexity, occupies installation space, and increases energy consumption. Furthermore, the coordination between atomization and fan airflow is poor, with water mist easily spreading locally, settling quickly, and covering a narrow range. Insufficient particle uniformity can also easily lead to mold growth, and the module's liquid pipelines are prone to blockage, requiring regular disassembly and cleaning, making maintenance cumbersome. In addition, existing motor cooling mostly relies on passive natural cooling or simple active air cooling. Passive cooling is extremely inefficient, and prolonged high-speed operation of the motor can easily cause heat accumulation exceeding the safety threshold, affecting performance and shortening lifespan. While active air cooling improves the cooling effect, it increases additional energy consumption and noise, and is also prone to cooling failure due to dust clogging the channels or cooling fan malfunction, posing safety hazards.

[0004] A similar prior art patent is US6216961B1 (Fan propelled misting apparatus). This patent discloses a blower fan with a water atomizing device, which blows out airflow and introduces water mist into the airflow through nozzles to achieve cooling through evaporative cooling.

[0005] Existing technical problems:

[0006] First, this existing technology does not employ a variable-diameter structure design for the airflow guidance path; its fan channel diameter is fixed, making it impossible to flexibly switch between concentrated and diffused airflow states according to usage requirements, thus limiting its ability to adjust the airflow. Second, this atomization structure mainly relies on nozzles to introduce liquid into the airflow, but it does not employ enhanced droplet separation and atomization methods such as hollow blade delivery structures, hub atomizing nozzles, or wedge-shaped guide structures, resulting in relatively weak atomization efficiency and humidification / cooling effects. Summary of the Invention

[0007] To address the problems existing in the prior art, the present invention provides a water-cooled electric fan with adjustable diameter and wedge-shaped atomization.

[0008] This invention is implemented as follows: a diameter-adjustable, wedge-shaped atomizing water-cooled electric fan, comprising:

[0009] The front cover, middle cover, and rear cover are used for gas flow guidance and protection.

[0010] Support base, used to support the frame;

[0011] Blades: Include hollow fan blades, delivery pipes, hollow hub cavity, hub shaft, atomizing nozzles, and slider rings, serving as power components and atomizing generators;

[0012] Variable diameter airflow structure: including front disc, slider, rear disc, connector and shift lever. When the shift lever slides, the diameter of the middle cover is adjusted to change the airflow pattern.

[0013] Motor housing: includes a motor housing shell with a liquid inlet, a liquid chamber and a motor chamber containing a drive motor.

[0014] Furthermore, the variable diameter guide structure is equipped with a slider. When the gear lever slides, the slider extends to adjust the diameter of the inner cover and change the airflow pattern.

[0015] Furthermore, the blade has a hollow structure in which liquid can flow. The sliding ring is slidably connected to the rotating shaft. When rotating, the sliding ring remains stationary. The liquid is naturally atomized from the atomizing nozzle according to Bernoulli's principle and inertial centrifugal force, and then collides with the slider wedge.

[0016] Furthermore, the motor contains liquid that enters the water-cooling chamber through an opening on the motor housing, then flows into the blade cavity according to Bernoulli's principle, and continues to atomize. As the liquid passes through the water-cooling chamber, it carries away heat and naturally flows out as atomized liquid.

[0017] In combination with the above technical solutions and the technical problems solved, the advantages and beneficial effects of the technical solution to be protected by this invention are as follows:

[0018] (1) An intelligent electric fan with a variable diameter airflow guide structure, blade self-atomization function, and external circulation active heat dissipation system, comprising a variable diameter airflow guide, wedge-shaped and hollow blades, and an external water-cooling system for motor control. This invention primarily improves airflow efficiency by setting a variable diameter airflow guide. It improves atomization efficiency and reduces energy consumption by setting hollow blades and a retractable wedge. It reduces motor temperature rise and extends service life by setting an external water-cooling system for the motor.

[0019] (2) The intelligent electric fan provided by the present invention has a variable diameter flow guiding structure, blade self-atomization function and external circulation active heat dissipation system. The device realizes the change of airflow state through the variable diameter flow guiding structure, blade self-atomization function and external circulation active heat dissipation system, and the linkage of atomization and humidification, thereby improving the efficiency of heat dissipation and atomization humidification.

[0020] (3) The electric fan device provided by the present invention integrates variable diameter airflow regulation, dual atomization humidification and motor water cooling. The core innovation is that the airflow mode and wind speed are continuously and accurately adjusted through the variable diameter guide structure, and the atomization uniformity is improved by combining the dual atomization technology of "centrifugal natural atomization + wedge forced atomization". The motor heat dissipation and atomization liquid supply are realized simultaneously by the water cooling circulation system, which simplifies the structure and optimizes the user experience.

[0021] (4) Adjustable diameter of the inner cover: By replacing the single speed adjustment with a variable diameter guide structure, the airflow mode and wind speed can be continuously and smoothly switched, and the smooth transition between gentle wind and vortex wind can be achieved, avoiding the discomfort caused by excessive gear difference.

[0022] (5) Energy consumption optimization: The combination of "natural centrifugal atomization + wedge forced atomization" greatly improves the fineness of droplets and the diffusion range, avoids local water mist sedimentation, and the integrated design eliminates the need for an independent atomization module, simplifying the structure and reducing energy consumption and maintenance costs.

[0023] (6) External water cooling system for motor: The external circulating water cooling system realizes heat dissipation and atomized liquid supply at the same time. The heat dissipation efficiency is better than traditional passive heat dissipation and active air cooling. There is no additional heat dissipation noise and dust blockage risk, effectively controlling the temperature rise of the motor and extending its service life.

[0024] (7) Convenient operation and maintenance: The gear lever adjustment design and integrated structure eliminate the need for complicated operation, reducing maintenance costs and cumbersome steps. Attached Figure Description

[0025] Figure 1 This is a structural diagram of an adjustable diameter and wedge-shaped atomizing water-cooled electric fan provided in an embodiment of the present invention;

[0026] Figure 2 This is a front view of the adjustable diameter and wedge-shaped atomizing water-cooled electric fan of the present invention;

[0027] Figure 3 This is a top sectional view of the adjustable diameter and wedge-shaped atomizing water-cooled electric fan of the present invention;

[0028] Figure 4 This is a side sectional view of the adjustable diameter and wedge-shaped atomizing water-cooled electric fan of the present invention;

[0029] Figure 5 This is a structural diagram of the hollow blade of the present invention;

[0030] Figure 6 This is a structural diagram of the variable diameter guide structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the working conditions of the present invention, including both gentle wind and vortex wind.

[0032] Figure 8 This is a schematic diagram of airflow under the conditions of gentle wind and vortex wind according to the present invention;

[0033] Figure 9 yes Figure 4 A magnified view of a portion of point A in the middle;

[0034] Figure 10 yes Figure 5 A magnified view of a portion of point B in the middle;

[0035] In the diagram: 1. Front cover; 2. Middle cover; 3. Variable diameter guide structure; 4. Blade; 5. Motor housing; 6. Rear cover; 7. Support base; 301. Front plate; 302. Slider; 303. Rear plate; 304. Gear lever; 305. Connector; 401. Hollow fan blade; 402. Delivery pipe; 403. Hollow hub cavity; 404. Rotating shaft; 405. Atomizing nozzle; 406. Sliding ring; 501. Motor housing shell; 502. Liquid cavity; 503. Motor cavity. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0037] In existing technologies, traditional electric fans primarily achieve airflow output through the rotation of a single blade, lacking precise control over airflow patterns and droplet atomization processes. Their fixed duct structure prevents adjustment of the outlet diameter as needed, leading to uneven wind speed distribution, localized airflow turbulence, and insufficient cooling efficiency. Furthermore, the atomization structure of ordinary humidifying fans often relies on independent nozzles or ultrasonic transducers, resulting in excessively large or unevenly distributed droplets, making it difficult to achieve continuous and uniform air humidification. Additionally, the shared cavity arrangement of the motor and liquid channel can easily lead to heat accumulation and leakage risks, affecting equipment lifespan and safety performance.

[0038] like Figure 1 , Figure 2 As shown, an embodiment of the present invention provides a diameter-adjustable and wedge-shaped atomizing water-cooled electric fan, comprising:

[0039] The front cover 1, middle cover 2, and rear cover 6 are used for gas guidance and protection; the support base 7 is used to support the frame; the blades 4 include hollow fan blades 401, delivery pipes 402, hollow hub cavities 403, hub shafts 404, atomizing nozzles 405, and slider rings 406, serving as power components and atomizing generators; the variable diameter guiding structure 3 includes a front disc 301, slider 302, rear disc 303, connector 305, and shift lever 304. When the shift lever slides, the diameter of the middle cover can be adjusted to change the airflow pattern, and its wedge design can greatly improve the degree of droplet separation and atomization; the motor cover 5 includes a motor cover shell 501 with a liquid inlet, a liquid cavity 502, and a motor cavity 503 containing a drive motor, used to isolate external liquids.

[0040] like Figure 4 , Figure 7 As shown, the front cover 1, the middle cover 2, and the rear cover 6 form an airflow guiding channel and also serve a protective function; the support base 7 provides stable support for the entire machine; the blade 4 adopts a hollow structure design, serving as both a power output element and a core component for atomization; the variable diameter guiding structure 3 extends and retracts via a sliding lever, adjusting the diameter of the middle cover and changing the airflow pattern, and its wedge design significantly improves the degree of droplet separation and atomization; the motor cover 5 includes a motor cover shell 501, a liquid chamber 502, and a motor chamber 503. The motor cover shell 501 has a liquid inlet, the motor chamber 503 houses the drive motor, and the liquid chamber 502 forms a water-cooling channel, achieving liquid delivery and motor isolation and protection.

[0041] like Figure 3 , Figure 6 As shown, the core advantage of the variable diameter guide structure 3 lies in the retractable design of the slider 302. By sliding the lever 304, the diameter of the middle cover can be quickly adjusted, and the airflow mode can be flexibly switched to meet the user's needs for different wind speeds and wind feel. In addition, the wedge structure can enhance the droplet impact atomization effect and improve the humidification and cooling efficiency.

[0042] like Figure 5 , Figure 9 , Figure 10 As shown, the hollow structure of blade 4 provides a channel for liquid flow. The sliding ring 406 and the rotating shaft 404 are slidably connected. When the rotating shaft rotates, the sliding ring remains fixed. Under the action of Bernoulli's principle and inertial centrifugal force, the liquid is naturally atomized and sprayed out from the atomizing nozzle 405. Then it collides with the wedge structure of slider 302 to complete forced atomization. The dual atomization design greatly improves the uniformity and atomization degree of droplets.

[0043] The liquid cavity 502 of the motor housing 5 forms a water-cooled circulation channel. The cooling liquid enters the water-cooled cavity through the opening of the motor housing, carries away the heat generated by the motor operation during the flow, and then flows into the blade cavity through the delivery pipe 402, and finally participates in the atomization process. The external circulation water-cooling design not only reduces the temperature rise of the motor and extends its service life, but also achieves efficient utilization of the liquid, without the need for additional heat dissipation or atomization drive modules.

[0044] The adjustable-diameter, wedge-shaped atomizing water-cooled electric fan in this embodiment of the invention has an overall structure consisting of a front cover 1, a middle cover 2, and a rear cover 6 forming a continuous airflow guiding channel. The front cover 1 is located at the front end of the unit, the middle cover 2 is located behind the front cover 1, and the rear cover 6 is installed on the back side of the middle cover 2. They are interconnected by snap-fit ​​or screw connection. The three together define the air inlet and outlet path and provide forward protection and airflow guidance for the fan. The support base 7 is located at the bottom of the unit and is connected to the intermediate frame through a support rod, providing stable mechanical support for the entire unit and ensuring the fan maintains a stable posture during operation.

[0045] Blade 4 is located inside the enclosure structure of front cover 1 and rear cover 6, and is the core component for power output and atomization in this invention. Blade 4 consists of a hollow fan blade 401, a delivery pipe 402, a hollow hub cavity 403, a hub shaft 404, an atomizing nozzle 405, and a slider ring 406. The hollow hub cavity 403 is connected to the output shaft of the drive motor inside the motor housing 5 via the hub shaft 404, enabling the hub to rotate around its central axis. Multiple atomizing nozzles 405 are provided at the front end of the hollow fan blade 401, and the nozzles are directly connected to the delivery pipe 402, which in turn passes through the interior of the blade and eventually flows into the hollow hub cavity 403. Liquid enters each delivery pipe through the hub cavity, is thrown towards the nozzle through the hollow fan blade, and achieves rotational atomization. The slider ring 406 is fitted on the outside of the blade to limit the deformation of the fan blade during high-speed rotation and ensure the stability of the atomizing nozzle position.

[0046] The motor housing 5 is located inside the rear housing 6 and consists of a motor housing shell 501, a liquid chamber 502, and a motor cavity 503. The motor cavity 503 houses the drive motor. A liquid inlet is provided on the motor housing shell 501, through which liquid enters the liquid chamber 502 and is guided to the hollow hub cavity 403 via internal guide channels. The liquid chamber 502 and the motor cavity 503 are isolated to ensure that the motor does not come into contact with the liquid, thus achieving the dual functions of water cooling and electrical safety protection.

[0047] The variable-diameter airflow guiding structure 3 is located on the inner wall of the middle cover 2, and includes a front plate 301, a slider 302, a rear plate 303, a connector 305, and a shift lever 304. The front plate 301 and the rear plate 303 are fixed to both sides of the middle cover 2, and the slider 302 can slide between them. Multiple sliders are linked to the shift lever 304 through the connector 305. When the user pushes the shift lever 304, the connector 305 will drive all sliders 302 to extend and retract radially in sync, thereby changing the inner diameter of the middle cover 2. When the inner diameter of the middle cover decreases, the airflow channel narrows, the airflow becomes more concentrated, and the wind speed increases; when the inner diameter of the middle cover increases, the airflow diffusion angle becomes larger, forming a gentler breeze. The front end of the slider adopts a wedge structure, which creates an additional turbulence effect when the airflow passes through, causing the droplets to be subjected to stronger shear impact at the moment of ejection from the blades, improving the secondary crushing efficiency, thereby enhancing the overall atomization quality.

[0048] The drive motor inside the motor cavity 503 starts, driving the hub shaft 404 to rotate, which in turn drives the hollow fan blades 401 to rotate at high speed. Simultaneously, an external water source enters the liquid cavity 502 through the liquid inlet and flows along the liquid guide path into the hollow hub cavity 403. As the hub rotates, the liquid is rapidly propelled to the delivery pipe 402 under centrifugal force, and then ejected at high speed from the atomizing nozzle 405. The ejected liquid is further split into extremely fine water mist under the combined action of the airflow and the wedge-shaped slider structure, and finally ejected from the front cover outlet with the airflow, achieving a combined effect of air cooling and water mist humidification.

[0049] Through the combination of front cover 1, middle cover 2, and rear cover 6, the adjustment effect of variable diameter guide structure 3, and the water-cooled isolation design of the rotating atomizing structure of blade 4 and motor cover 5, this invention achieves the comprehensive functions of controllable air volume, sufficient atomization, independent liquid delivery, and motor safety protection. It has a compact structure and reliable operation.

[0050] like Figure 8 As shown, the specific working method is as follows:

[0051] 1. When it is necessary to enhance the atomization and heat dissipation of the airflow, rotate the gear lever 304 counterclockwise to drive the slider 302 to slide inward, the diameter of the middle cover 2 decreases, the slider wedge extends synchronously, the airflow channel structure changes, and enters the vortex wind deflector, which enhances the airflow speed and turbulence.

[0052] 2. Under the action of Bernoulli's principle, the cooling liquid flows from the liquid cavity 502 into the hollow hub cavity 403 through the delivery pipe 402, and then is distributed to the cavities of each hollow fan blade 401. After the drive motor starts, it drives the hub shaft 404 and the hollow fan blades 401 to rotate at high speed. Under the action of inertial centrifugal force, the liquid is thrown out from the atomizing nozzle 405 to form preliminary naturally atomized droplets.

[0053] 3. The initially atomized droplets collide at high speed with the extended slider wedge 302, completing forced atomization and forming a fine and uniform water mist, which diffuses with the airflow to achieve efficient humidification and cooling;

[0054] 4. When the cooling liquid flows through the liquid cavity 502, it exchanges heat with the drive motor in the motor cavity 503, efficiently removing the heat generated by the motor operation and reducing the motor temperature rise. Then the liquid flows naturally into the blade cavity to participate in atomization, realizing the cyclical synergy of water cooling and atomization.

[0055] 5. When a gentle breeze is needed, rotate the gear lever 304 clockwise, slide the slider 302 outward, the diameter of the middle cover 2 expands, the slider wedge retracts, the airflow channel becomes gentler, the airflow is stable, and the gentle breeze setting is entered to meet the need for mild air delivery.

[0056] The adjustable-diameter, wedge-shaped atomizing water-cooled electric fan provided by this invention achieves gas-liquid coupling control through a multi-module collaborative structure. The front cover 1, middle cover 2, and rear cover 6 form a closed airflow channel, with a support base 7 providing stable support. The variable-diameter airflow structure 3 consists of a front plate 301, a slider 302, a rear plate 303, a lever 304, and a connector 305. The slider 302 is radially extended or retracted by the sliding lever 304, thereby changing the diameter of the middle cover 2 and adjusting the airflow convergence angle and outlet area. When the middle cover 2 contracts, a high-pressure concentrated flow is formed; when it expands, a wide-area gentle breeze mode is formed, allowing the airflow characteristics to be continuously adjusted according to the usage scenario.

[0057] The blade 4 adopts a hollow structure design, including a hollow fan blade 401, a delivery pipe 402, a hollow hub cavity 403, a rotating shaft 404, an atomizing nozzle 405, and a sliding ring 406. Driven by an external liquid supply system, the liquid enters the delivery pipe 402 through the liquid cavity 502 of the motor housing 5, and flows along the hollow hub cavity 403 to the internal channel of the blade 401. When the rotating shaft 404 drives the hub to rotate, the liquid flows towards the blade tip under centrifugal force and is sprayed out through the atomizing nozzle 405 to form primary droplets. The sprayed droplets collide at high speed with the wedge-shaped structure on the inner wall of the variable diameter guide structure 3, producing secondary fragmentation and achieving a highly efficient atomization effect with uniform particle size. The sliding ring 406 is slidably connected to the rotating shaft 404 to ensure stable liquid flow and a constant spray direction during rotation.

[0058] The motor housing 5 is internally divided into a motor cavity 503 and a liquid cavity 502, with a liquid inlet on the outer casing 501. Cooling liquid enters the liquid cavity 502 and flows over the outer wall of the motor, absorbing operating heat to achieve water cooling. It then enters the blade channel via the delivery pipe 402 to participate in the atomization process. This closed-loop design achieves dynamic heat transfer from the motor and reuse of liquid energy, effectively reducing temperature rise and improving overall stability and energy efficiency.

[0059] In terms of aerodynamic performance, the Reynolds number and dynamic pressure distribution at the fan outlet are precisely controlled by adjusting the expansion and contraction states of the variable-diameter guide structure 3. In the contracted state, a high-speed jet is formed, enhancing airflow penetration; in the expanded state, a uniform diffusion air field is formed, improving indoor air circulation efficiency. The wedge structure creates boundary layer shear at the flow field boundary, stabilizing droplet trajectories and ensuring thorough mixing with the airflow, thereby improving the balance between air cooling and humidity regulation.

[0060] During overall operation, the cooling liquid forms an external circulation loop between the motor cavity and the blade channel; the airflow forms an internal guide channel in the front cover 1, middle cover 2, and rear cover 6; and the gas-liquid interaction completes atomization and remixing at the guide port. This system integrates pneumatic control, water cooling, and two-stage atomization, overcoming problems such as non-adjustable wind speed, low atomization efficiency, and insufficient motor heat dissipation in existing technologies. It has broad industrial application value in household, industrial, and environmental control fields.

[0061] Example 1: Annular Telescopic Shield Structure

[0062] The fan airflow system in this embodiment consists of a front cover, a middle cover, and a rear cover assembled sequentially to form an annular channel. The outer ring of the middle cover is equipped with a telescopic mechanism consisting of a slider, a front plate, a rear plate, and a lever. The lever is driven radially by manual operation or a servo motor, causing the slider to extend and retract synchronously, thus allowing the outlet diameter of the middle cover to vary within a continuous range. When the middle cover retracts, the airflow in the annular channel accelerates and concentrates to form a jet, increasing wind pressure; when the middle cover expands, the airflow diffuses to form a gentle breeze, improving comfort.

[0063] A wedge-shaped airflow guide, made of high-strength aluminum alloy, is fixedly installed on the outer edge of the central cover. The leading edge thickness is less than 2 mm, and the trailing edge angle is 45 degrees. When the airflow passes through, a stable shear vortex layer is formed on the wedge surface. When atomized droplets flow through this area, they are subjected to secondary breakage by the dual action of impact and shear, resulting in a more concentrated droplet size distribution and a reduced atomization layer thickness, thus achieving a synergistic effect of air delivery and humidification.

[0064] Example 2: Multi-linkage flow guiding and adjustment structure

[0065] In this embodiment, three sets of slider linkage modules are set on the outer periphery of the inner cover. The sliders are installed on the inner wall of the guide shroud via an annular groove, and a linkage structure is used to make the sliders move synchronously. The control system outputs a signal to the stepper motor, which drives the linkage to slide, thereby controlling the automatic adjustment of the outlet diameter of the inner cover. This structure can adjust the outlet air duct area in real time according to the ambient temperature, realizing intelligent variable diameter air control.

[0066] The wedge-shaped airflow guide is made of composite resin and carbon fiber, with a hydrophilic coating on the surface. Upon impact, droplets can form a thin film and then disperse into fine mist droplets. Tests show that under wind speeds of 10 meters per second, the average droplet diameter is approximately 40 micrometers, and the air humidity is increased by 12%, demonstrating significant cooling and humidifying effects.

[0067] Example 3: Centrifugal Jet Blade Structure

[0068] In this embodiment, a through-flow liquid channel is provided inside the blade, and the hub cavity is connected to the delivery pipe. Liquid enters the hub under external pump pressure and, with the rotation of the shaft, generates centrifugal force, flowing along the blade's interior towards the blade tip. The liquid is then ejected at high speed through an atomizing nozzle, with an outlet velocity exceeding 25 meters per second, forming primary droplets under the cutting action of the airflow.

[0069] The ejected droplets pass through the guide outlet and collide with the wedge-shaped structure at the edge of the central cover. The droplets break apart again under the impact of kinetic energy, forming a micro-mist cluster with a narrower particle size distribution. The entire atomization process requires no additional energy consumption, relying entirely on the mechanical energy and air shear energy generated by the rotation of the blades. It has a compact structure, high efficiency, and is suitable for energy-saving air cooling systems.

[0070] Example 4: Sliding Stabilized Ring Atomization Control Structure

[0071] In this embodiment, a sliding ring assembly is installed between the rotating shaft and the blade root. The sliding ring is made of wear-resistant fluoroplastic material, which can maintain a constant liquid flow rate at high speeds, preventing turbulence or cavitation in the blade cavity. After being stably output through the sliding ring, the liquid flows along the channel to the atomizing nozzle, forming a continuous liquid film spray with uniform atomization layer density.

[0072] When the blade rotation speed reaches 120 radians per second, the nozzle outlet velocity is 30 meters per second, and the spray angle is 20 degrees. After the droplets are subjected to the combined action of air and the guide surface, the average particle size is reduced to 30 micrometers, and the spatial distribution radius is increased by 25%. This structure can achieve a room temperature reduction of more than 5 degrees Celsius in laboratory humid and hot environments, verifying the significant cooling performance of the two-stage atomization system.

[0073] Example 5: Dual-cavity layered water-cooled motor structure

[0074] In this embodiment, an integrated housing is assembled on the outside of the motor. The housing is internally divided into a liquid chamber and a motor chamber, with a ceramic sealing layer between the two chambers. The liquid chamber is connected to an external liquid storage system through an inlet. The coolant flows in a ring along the outer wall of the motor, absorbing operating heat and then flowing to the blade delivery pipe through the outlet, thus achieving cooling and atomized liquid circulation.

[0075] After two hours of continuous operation, the system maintains a motor temperature rise below 15 degrees Celsius, significantly lower than traditional air-cooled structures. Optimal heat dissipation is achieved when the liquid circulation rate is controlled at 1.5 meters per second. The coolant, after being sprayed from the blades, continues to participate in air atomization, enabling secondary utilization of cooling energy. This solution effectively extends motor life and improves energy efficiency.

[0076] Example 6: Energy Recovery Water Cooling Circulation System

[0077] This embodiment uses an external micro-pump to drive liquid circulation. After heat exchange in the motor cavity, the liquid flows into the internal channel of the blades. When the liquid is sprayed out at the atomizing nozzle, part of it evaporates and absorbs heat. The cooled air then enters the area around the motor cavity through the return channel, creating a secondary air-cooling effect. The system achieves gas-liquid two-phase energy coupling, forming a closed-loop heat dissipation cycle.

[0078] Experimental results show that, under an input power of 200 watts, this structure can reduce the motor housing temperature by 20% while increasing the atomization volume by 15%. The energy recovery cycle not only improves heat dissipation performance but also avoids the structural complexity caused by an independent cooling module, reducing the overall size by 10%, making it suitable for household and industrial humidification and ventilation scenarios.

[0079] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention, and within the spirit and principles of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A variable-diameter airflow guiding and wedge-shaped atomization integrated air duct structure, comprising a front cover, a middle cover, a rear cover, and an airflow adjustment assembly. The front cover, middle cover, and rear cover are connected in sequence to form a ring-shaped airflow channel; The airflow adjustment assembly is located on the outside of the inner cover and includes a sliding mechanism and a wedge-shaped airflow guide. The sliding mechanism drives the inner cover to extend and retract radially to change the outlet diameter of the annular channel; When the shield contracts, the airflow forms a concentrated jet; when the shield expands, the airflow forms a diffused flow field. The wedge-shaped guide is fixed at the edge of the outlet of the middle cover to enhance airflow shear and promote secondary atomization of droplets.

2. According to the structure described in claim 1, the sliding mechanism consists of a front plate, a slider, a rear plate, and a shift lever. The shift lever slides radially, causing multiple sliders to extend and retract synchronously, thereby achieving continuous adjustment of the outlet of the middle cover.

3. According to the structure described in claim 1, the leading edge thickness of the wedge guide is no more than 2 mm, and the trailing edge extension angle is 30 to 60 degrees, forming a stable shear layer to enhance gas-liquid mixing.

4. A hollow blade two-stage atomization system, comprising a blade body, a conveying channel, a hub cavity, a rotating shaft, a sliding ring, and an atomizing nozzle. The liquid enters the blade through the conveying channel from the hub cavity, and is sprayed out through the atomizing nozzle under the action of centrifugal force driven by the rotating shaft to form the first atomized layer. The ejected droplets collide at high speed with the wedge surface located at the flow outlet to form a second atomization layer, thereby generating a cold mist flow with uniform particle size.

5. In the system according to claim 4, the conveying channel and the hub cavity are axially connected, and the liquid can be stably ejected when the blade rotational angular velocity is greater than 100 radians per second.

6. In the system according to claim 4, the sliding ring is installed on the outer wall of the rotating shaft and slides in cooperation with the root of the blade to stabilize the liquid flow rate and prevent liquid flow disturbance.

7. In the system according to claim 4, the outlet velocity of the atomizing nozzle is 20 m / s to 35 m / s, and the spray angle is 10 degrees to 25 degrees, so as to ensure that the droplet size is less than 50 micrometers.

8. A water-cooled isolation and circulating liquid cooling system for an electric motor, comprising a motor housing, a liquid housing, and a casing. The liquid chamber is isolated from the motor chamber and separated by a sealing layer. The liquid chamber is connected to an external liquid supply channel through an inlet. When the cooling liquid flows in the liquid cavity, it exchanges heat with the outer wall of the motor, carrying away the heat generated by the motor, and then flows into the blade through the delivery pipe to participate in atomization.

9. In the system according to claim 8, when the flow rate of the liquid in the liquid cavity is controlled between 1 m / s and 2 m / s, the temperature rise of the motor is controlled within 15 degrees Celsius.

10. In the system according to claim 8, the liquid cavity outlet is connected to the blade conveying channel to realize the energy recycling of the motor heat dissipation and liquid atomization process.

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