A drive structure with waterproof and dustproof functions and a ventilation device using this structure

Abstract

This invention relates to the technical field of ventilation electrical appliances, and more particularly to a drive structure and ventilation device with waterproof and dustproof functions. The drive structure includes a drive component and a protective component. The drive component consists of a power component and a pressure-generating component, used to drive airflow to achieve ventilation. The protective component has a multi-layered protective structure to prevent external moisture from entering the drive component. The ventilation device includes the aforementioned drive structure, a housing, a flow-guiding component, a control component, and a lighting component. The flow-guiding component guides airflow and enhances airflow output pressure. The lighting component has a heat dissipation component, the flow-guiding chamber has a swirling section, and a second chamber opening is equipped with a heat exchange component. This application achieves technical effects such as waterproofing and dustproofing, effective ventilation, accelerated removal of water droplets and dust, heat recovery, reduced condensation retention, and dehumidification.

Description

Technical Field

[0001] This invention application relates to the technical field of ventilation electrical appliances, and more particularly to a drive structure with waterproof and dustproof functions and an air exchange device using the structure. Background Technology

[0002] In the field of ventilation equipment technology, the demand for ventilation devices in high-humidity environments such as bathrooms, saunas, and swimming pool changing rooms is increasing. Traditional bathroom exhaust fans, as basic ventilation equipment, are widely used in various high-humidity locations. However, as users' requirements for equipment stability, energy efficiency, and service life increase, their core performance shortcomings are becoming increasingly apparent. Current market demands for ventilation devices include: enhanced waterproof and dustproof performance to adapt to long-term operation in high-humidity environments; extended lifespan of motors and LED lighting systems to reduce maintenance costs. Existing ventilation equipment still has significant room for improvement in terms of adaptability to high-humidity environments, durability of core components, and energy efficiency.

[0003] To address these needs, existing technologies have developed various solutions. For motor protection, the main approach is to use rubber seals in conjunction with waterproof bearings to prevent moisture intrusion. For LED module optimization, external independent heat sinks are commonly used to improve heat dissipation. In addition, some technologies attempt to introduce nano-coating technology to enhance surface properties or employ magnetic levitation motors to reduce mechanical wear, but these technologies have not yet become mature solutions in the bathroom exhaust fan field.

[0004] However, existing technical solutions still have insurmountable drawbacks. Regarding motor protection, the single-seal structure is prone to micro-leakage due to thermal expansion and contraction during high-speed operation, and the risk of water seepage at the shaft end cannot be completely eliminated, resulting in an average motor lifespan of only 10,000-20,000 hours. As for LED modules, external heat sinks cannot prevent moisture from corroding the circuit board, significantly shortening their lifespan. Summary of the Invention

[0005] To address the issue that traditional ventilation motors, which rely on a single sealing structure for protection at high speeds, are susceptible to water leakage at the shaft end, leading to motor damage from moisture, short service life, and inability to meet the long-term stable operation requirements in high-humidity environments, this application provides a drive structure with waterproof and dustproof functions and a ventilation device using this structure.

[0006] Firstly, this application provides a drive structure with waterproof and dustproof functions, adopting the following technical solution: A drive structure with waterproof and dustproof functions includes a drive component and a protective component. The protective component is mounted on the drive component. The drive component is used to drive airflow to achieve ventilation. The protective component has a multi-layer protective structure to prevent external moisture from entering the drive component.

[0007] By adopting the above technical solution, the drive component can drive airflow to achieve the ventilation function, and the multi-layer protective structure of the protective component can prevent external moisture from entering the drive component. This solves the problem of insufficient waterproof and dustproof performance of existing ventilation drive motors and the problem of moisture easily penetrating and causing motor damage, and improves the operational stability of the drive structure in high humidity and dusty environments.

[0008] Preferably, the drive assembly includes a power component and a pressure-generating component. The power component drives the pressure-generating component to rotate, and the pressure-generating component generates negative pressure to drive airflow. The protective component is mounted on the power component to prevent external moisture from entering the power component.

[0009] By adopting the above technical solution, the power component drives the pressure-generating component to rotate and generate negative pressure, which can drive airflow to achieve the ventilation function; the protective component is installed on the power component to block external moisture from entering the power component, avoid damage to the power component due to moisture, and improve the waterproof performance and operational stability of the drive structure.

[0010] Preferably, the protective assembly has a first protective component, a second protective component, and a third protective component. The first protective component encloses the power component and serves as the core protection for the power component. The second protective component encloses the first protective component to absorb vibrations generated during the operation of the power component and enhance sealing. The third protective component covers the second protective component to provide basic protection and structural support.

[0011] By adopting the above technical solution, the first protective component wraps around the power component, which can prevent external moisture and dust from directly contacting the core components of the motor, thus achieving core protection for the power component; the second protective component wraps around the first protective component, which can absorb the vibration generated by the power component during operation, reduce damage to the power component, and at the same time enhance the sealing performance, further preventing moisture from entering; the third protective component covers the second protective component, which can provide basic protection and structural support, build a solid outer protective barrier, and prevent moisture intrusion through the three-level protection structure, so that the motor protection level can reach the IP68 standard and extend the service life of the motor.

[0012] Preferably, the protective component has a waterproof part, which is mounted on the output end of the power component. The waterproof part is used to generate a radial air pressure gradient to form an active waterproof barrier.

[0013] By adopting the above technical solution, the drive component drives the airflow to achieve the ventilation function, the protective component has a multi-layer protective structure to block external moisture from entering the power component, and on this basis, the waterproof component is assembled at the output end of the power component to generate a radial air pressure gradient, forming an active waterproof barrier. With the multi-layer protective structure, the motor protection level reaches the IP68 standard, extending the motor service life by two times compared with the existing technology. There is no risk of water leakage and moisture in high humidity environment, which significantly improves the operational stability.

[0014] Preferably, the output end of the power component is equipped with an insulated output part, which has resistance to moisture corrosion and wear.

[0015] By adopting the above technical solutions, the insulated output part assembled at the output end of the power component has the properties of moisture and corrosion resistance and wear resistance, which can ensure the accuracy of high-speed operation, further strengthen the shaft end sealing and insulation protection, achieve all-round waterproof and dustproof protection, and improve the tolerance level to P4 level to ensure the accuracy of high-speed operation.

[0016] Preferably, the pressure generating component has a conductive part, which is assembled into the body of the pressure generating component and is used to form an electrostatic discharge channel.

[0017] By adopting the above technical solution, the conductive part inside the pressure-generating component can form a static electricity discharge channel, which can promptly discharge the static electricity generated during operation, avoid the accumulation of static electricity affecting the operation of the component, and solve the safety hazards caused by static electricity accumulation during the high-speed operation of the motor.

[0018] Secondly, this application provides a ventilation device, which adopts the following solution: A ventilation device includes, in a first aspect, a drive structure with waterproof and dustproof functions, and further includes a housing, a flow-guiding component, a control component, and a lighting component. The flow-guiding component is assembled inside the housing and is used to guide airflow and enhance the airflow output pressure of the drive structure. The flow-guiding component has a flow-guiding chamber, and the drive structure is assembled on the flow-guiding component with its output end located inside the flow-guiding chamber. The lighting component is assembled on the housing and located below the flow-guiding component. An airflow channel is provided between the lighting component and the housing for airflow to enter the flow-guiding chamber, and the airflow channel communicates with the flow-guiding chamber. The control component is assembled on the outer surface of the flow-guiding component and is used to control the operating state of the lighting component and the drive structure.

[0019] By adopting the above technical solution, the ventilation device integrates a drive structure with waterproof and dustproof functions. It guides airflow and enhances airflow output pressure with the help of the diversion component. It uses the airflow channel to allow indoor airflow to enter the diversion chamber. The control component uniformly regulates the working status of the lighting component and the drive structure, realizing integrated control of efficient ventilation, waterproof and dustproof, and lighting functions. It is suitable for indoor scenarios with high humidity, dust, and lighting that also need to be considered. Relying on the waterproof and dustproof performance of the drive structure, it achieves stable operation in all scenarios when combined with the diversion component.

[0020] Preferably, the drainage chamber has a first opening and a second opening, the first opening being used to allow indoor airflow to enter the drainage chamber, and the second opening being used to discharge indoor airflow; the first opening is connected to the airflow channel.

[0021] By adopting the above technical solution, the ventilation device allows indoor airflow to enter the drainage chamber through the airflow channel and the first cavity, and then exit from the second cavity after passing through the drainage chamber, thereby realizing the indoor ventilation function.

[0022] Preferably, the lighting component includes a lighting module and a heat dissipation component. The heat dissipation component is connected to the housing via a connector. The lighting module is installed at one end of the heat dissipation component, and a diffuser is provided on the end face of the other end near the airflow channel. The diffuser is used to increase the heat dissipation area.

[0023] By adopting the above technical solutions, the drive structure can drive airflow to achieve the ventilation function; the multi-layer protective structure of the protective component can prevent water vapor from entering the drive component; the flow guiding component guides the airflow and enhances the airflow output pressure; the heat dissipation component is connected to the shell and a lighting module is installed at one end, while the diffuser at the other end increases the heat dissipation area. The intake airflow flowing through the airflow channel can be used to assist in heat dissipation, ensuring the stable operation of the lighting module and avoiding high temperature damage.

[0024] Preferably, the inner wall of the drainage chamber is provided with a plurality of swirling sections, which are evenly distributed circumferentially along the inner wall of the drainage chamber; the swirling sections are used to guide the airflow to form a swirling flow, thereby accelerating the separation of water droplets and dust from the surface of the output end of the drive structure.

[0025] By adopting the above technical solution, the ventilation device includes a waterproof and dustproof drive structure, a housing, a drainage component, a control component, and a lighting component. The drainage component is installed inside the housing and has a drainage chamber. The drive structure is installed on the drainage component with its output end located inside the drainage chamber. The lighting component is installed on the housing and located below the drainage component. There is an airflow channel between the two to allow airflow to enter the drainage chamber. The control component is installed on the outer surface of the drainage component to control the operation of the lighting component and the drive structure. The swirling section evenly distributed around the inner wall of the drainage chamber guides the airflow to form a swirling flow, which can accelerate the removal of water droplets and dust from the surface of the drive structure's output end, preventing water vapor and dust accumulation from affecting the operation of the drive structure. The drive components can be kept clean without manual cleaning, further extending the service life of the core drive structure.

[0026] Preferably, a heat exchange component is provided on the second cavity opening, and an element chamber is provided between the outer shell and the drainage component. The control component is assembled in the element chamber. The output end of the heat exchange component is located in the element chamber, and the input end is located on the second cavity opening. The heat exchange component is used to recover heat, reduce condensate retention, and transfer heat to the element chamber for dehumidification.

[0027] By adopting the above technical solution, the ventilation device can recover exhaust heat using heat exchange components and transfer the heat to the component chamber to actively dehumidify the component chamber, reduce condensate retention in the component chamber, and solve the problems of condensate accumulation and water vapor corrosion of components.

[0028] Preferably, the heat exchange assembly has an extension channel located at the input end, the extension channel being used to extend the heat exchange path.

[0029] By adopting the above technical solutions, the heat exchange component can extend the heat exchange path by setting an extended channel, improve the sensible heat recovery rate, reduce condensate adhesion, enhance the moisture resistance of the heat exchange component, effectively solve the problem of condensate accumulation, and also actively dehumidify the component chamber to avoid water vapor corrosion of the control component.

[0030] In summary, this application has the following beneficial effects: 1. The drive structure employs a multi-layered protective structure to prevent moisture intrusion, a highly effective design. The first protective component encases the power component as core protection; the second protective component encases the first to absorb vibration and enhance sealing; the third protective component covers the second to provide basic protection and structural support; and finally, a waterproof component creates a radial pressure gradient, forming an active waterproof barrier. This comprehensive protection achieves an IP68 protection rating for the motor, significantly extending its service life by two times compared to existing technologies. Even in high-humidity environments, the motor will not leak water or become damp, ensuring stable operation over extended periods. This greatly improves the reliability and durability of the equipment in harsh environments, reducing maintenance and replacement costs due to motor failure.

[0031] 2. The conductive part of the pressure-generating component plays a crucial role. It is assembled within the component body and forms a static electricity discharge channel. During the operation of the drive structure, the pressure-generating component generates static electricity. If this static electricity cannot be discharged in time, it will gradually accumulate dust and affect the normal operation of the component. The presence of the conductive part allows for the timely discharge of generated static electricity, avoiding a series of problems caused by static electricity accumulation. This ensures the stable operation of the pressure-generating component and the entire drive structure, improves the safety and reliability of the equipment, extends the service life of the components, and reduces equipment damage and maintenance frequency caused by static electricity.

[0032] 3. The swirling section of the drainage chamber is ingeniously designed. Several swirling sections are evenly distributed circumferentially along the inner wall of the drainage chamber, effectively guiding the airflow to form a swirling flow. When the airflow flows within the drainage chamber, the swirling sections change the direction and state of the airflow, causing it to form a directional swirling flow. This swirling airflow continuously washes the surface of the drive structure's output end. Utilizing the centrifugal force and scouring force of the airflow, it can quickly accelerate the removal of water droplets and dust from the surface of the drive structure's output end. In this way, the cleanliness of the drive components can be maintained without manual cleaning, avoiding malfunctions caused by the accumulation of water droplets and dust. By reducing the damage to the drive structure caused by dirt and moisture, the service life of the core drive structure is further extended, the maintenance cost of the equipment is reduced, and the operating efficiency and stability of the equipment are improved.

[0033] 4. The heat exchange component plays a crucial role in energy saving and moisture prevention within the entire ventilation system. Installed at the second chamber inlet, it recovers heat from the exhaust gas, preventing heat waste. Simultaneously, the heat exchange component reduces condensate buildup by transferring heat to the component chamber, achieving dehumidification. In traditional ventilation systems, condensate buildup and moisture corrosion of components in the electrical control chamber are common problems, leading to increased failure rates and impacting normal equipment operation. The heat exchange component effectively solves these issues through heat recovery and dehumidification, extending the lifespan and stability of the electrical control components, reducing maintenance costs, and ensuring the reliable operation of the entire ventilation system.

[0034] 5. The heat dissipation components of the lighting assembly increase the heat dissipation area through a diffuser section. This diffuser section, with its special design such as multiple heat dissipation fins, significantly increases the heat dissipation area. Simultaneously, the design of the connectors between the heat dissipation components and the housing, as well as the airflow channels, allows the intake airflow passing through these channels to further aid in heat dissipation. This effectively dissipates the heat generated by the lighting module, ensuring stable operation within a suitable temperature environment, preventing damage from high temperatures, extending the module's lifespan, and improving lighting performance and overall equipment reliability. Attached Figure Description

[0035] Figure 1 This is an overall structural view of the driving structure disclosed in the embodiments of this application; Figure 2 This is a cross-sectional view of the power component in the drive structure disclosed in the embodiments of this application; Figure 3 This is an overall structural view of the power component in the drive structure disclosed in the embodiments of this application; Figure 4 This is an overall structural view of the ventilation device disclosed in the embodiments of this application; Figure 5 This is a cross-sectional view of the ventilation device disclosed in the embodiments of this application; Figure 6 This is a structural view of the component chamber in the ventilation device disclosed in the embodiments of this application; Figure 7 This is a structural view of the drainage chamber in the ventilation device disclosed in the embodiments of this application.

[0036] Explanation of reference numerals in the attached figures: 1. Drive assembly; 11. Power component; 110. Insulation output section; 12. Pressure generating component; 2. Protection assembly; 21. First protection component; 210. Fluororubber oil seal; 22. Second protection component; 23. Third protection component; 24. Waterproof component; 3. Housing; 31. Airflow channel; 32. Component chamber; 320. Exhaust port; 33. Connector; 4. Drainage assembly; 41. Drainage chamber; 410. First cavity opening; 411. Second cavity opening; 412. Swirl section; 5. Control assembly; 6. Lighting assembly; 61. Lighting module; 62. Heat dissipation component; 620. Diffusion section; 7. Heat exchange assembly; 71. Refrigerant drive pump; 72. Refrigerant storage tank; 73. Heat exchange fins; 74. Heat exchange tube; 75. Extension channel. Detailed Implementation

[0037] The present application will be further described in detail below with reference to the accompanying drawings.

[0038] Firstly, embodiments of this application disclose a driving structure with waterproof and dustproof functions, employing the following solution: This application discloses a drive structure with waterproof and dustproof functions. See also Figure 1 and Figure 2 It includes a drive component 1 and a protective component 2. The protective component 2 is mounted on the drive component 1. The drive component 1 is used to drive the airflow to achieve the ventilation function. The protective component 2 has a multi-layer protective structure to prevent external water vapor from entering the drive component 1.

[0039] Specifically, see Figure 1 and Figure 2 The drive assembly 1 includes a power component 11 and a pressure-generating component 12. The power component 11 drives the pressure-generating component 12 to rotate, and the pressure-generating component 12 generates negative pressure to drive airflow. The protective assembly 2 is mounted on the power component 11 to prevent external moisture from entering the power component 11.

[0040] Specifically, see Figure 1 and Figure 2 The power component 11 includes a ventilation motor, and the pressure-generating component 12 is keyed to the output end of the ventilation motor. The ventilation motor drives the pressure-generating component 12 to rotate, creating a pressure difference and achieving indoor air exchange. The pressure-generating component 12 has a conductive part, which is assembled in the body of the pressure-generating component 12 and is used to form a static electricity discharge channel.

[0041] In one embodiment, the pressure-generating component 12 includes a ventilation impeller, which is keyed to the output shaft of a ventilation motor. The ventilation motor drives the ventilation impeller to rotate, creating a pressure difference that draws indoor air out and discharges it, thus achieving ventilation. The ventilation conductive part includes a copper frame, which is embedded in the ventilation impeller. A static electricity discharge channel is formed through the embedded copper conductive network. The outer edge of the blade is uniformly sprayed with an antistatic coating to prevent the generation and accumulation of static electricity. In other embodiments, a structure or coating combination with static electricity conduction capability can also be used as the conductive part.

[0042] Specifically, see Figure 1 and Figure 2 The protective component 2 includes a first protective component 21, a second protective component 22, and a third protective component 23. The first protective component 21 encloses the power component 11 and is the core protective part of the power component 11; the second protective component 22 encloses the first protective component 21 and is used to absorb the vibration generated when the power component 11 is running and to enhance the sealing; the third protective component 23 covers the second protective component 22 and is used to provide basic protection and structural support.

[0043] In addition, see Figure 2 and Figure 3 The protective component 2 is also equipped with a waterproof component 24, which is mounted on the output end of the power component 11. Its function is to generate a radial air pressure gradient to form an active waterproof barrier.

[0044] In one embodiment, the first protective component 21 includes a sealed chamber that encloses the motor body, including the rotor, stator, and rotor bearings of the ventilation motor. The sealed chamber is made of stainless steel, providing core protection for the motor.

[0045] In one embodiment, the second protective component 22 includes silicone that encapsulates the sealed chamber to absorb vibrations during the operation of the ventilation motor and enhance the seal.

[0046] In one embodiment, the third protective component 23 includes a nylon shell that encapsulates the silicone layer, providing basic protection and installation support for the ventilation motor. By employing a three-tiered protection structure to prevent moisture intrusion, the motor achieves an IP68 protection rating, extending its service life.

[0047] In one embodiment, the waterproof component 24 includes a centrifugal waterproof ring, which is fixedly mounted on the motor shaft by an interference fit and rotates synchronously with the ventilation motor shaft. The inner hole of the centrifugal waterproof ring is interference-fitted with the motor shaft and assembled by heat fitting or cold pressing. When the ventilation motor is running, the centrifugal waterproof ring rotates synchronously with the shaft, generating a radial air pressure gradient, forming an active waterproof barrier, and actively preventing water vapor from penetrating from the shaft end. Combined with a three-level protection structure to prevent external water vapor intrusion, the motor protection level reaches the IP68 standard, extending its service life by two times compared to existing technologies. It eliminates the risk of water leakage and moisture in high-humidity environments, and significantly improves operational stability.

[0048] In one embodiment, the output end of the power component 11 is equipped with an insulating output section 110, which has the properties of being resistant to moisture and corrosion and wear.

[0049] In one embodiment, the insulated output section 110 includes a ceramic shaft core mounted within a sealed chamber. Assembling the ceramic shaft core improves the tolerance level to P4, thereby ensuring accuracy during high-speed operation. Furthermore, a fluororubber oil seal 210 is installed within the sealed chamber, further enhancing the sealing effect at the shaft end.

[0050] Implementation principle: This technical solution revolves around the coordinated implementation of power drive, negative pressure aeration, and multi-layer waterproof and dustproof protection. The core operation process is completed by the cooperation of drive component 1 and protection component 2. Drive component 1 serves as the power core. The power component 11 uses a ventilation motor to provide rotational driving force. Its output main shaft drives the ventilation impeller of the pressure-generating component 12 to rotate synchronously through a key connection. During the high-speed rotation of the impeller, negative pressure is generated, which in turn drives the external airflow to complete the basic function of equipment ventilation. The pressure-generating component 12 has a pre-embedded copper frame as a conductive part. Together with the antistatic coating sprayed on the outer edge of the blades, it forms a complete static electricity discharge channel to promptly discharge the static electricity generated during operation and avoid the accumulation of static electricity affecting the operation of the component.

[0051] The protective component 2 adopts a three-layer progressive protection design. The first protective component 21 is a stainless steel sealed chamber that completely encloses the rotor, stator, and rotor bearings of the ventilation motor, preventing external moisture and dust from directly contacting the core components of the motor. The second protective component 22 is a silicone layer that completely covers the sealed chamber, absorbing the mechanical vibration generated during motor operation and further filling gaps to improve overall sealing performance. The third protective component 23 is a nylon shell that covers the outside of the silicone layer, serving as basic structural protection and installation support, thus building a solid outer protective barrier. Simultaneously, the centrifugal waterproof ring installed at the motor output end rotates synchronously with the motor shaft through an interference fit. During operation, it utilizes centrifugal force to generate a radial air pressure gradient, forming an active waterproof barrier at the shaft end. Combined with the fluororubber oil seal 210 installed inside the sealed chamber, this double-blocks moisture penetration from the shaft end gaps. The ceramic shaft core insulated output section 110 at the motor output end, with its moisture and corrosion resistance and wear resistance, ensures high-speed operation accuracy and further strengthens the shaft end sealing and insulation protection, achieving comprehensive waterproof and dustproof protection.

[0052] This technical solution provides a power drive with waterproof and dustproof performance, while stably realizing the airflow-driven ventilation function, and has multiple advantages such as static electricity discharge, vibration reduction and noise reduction, and high-speed and precise operation.

[0053] This technology employs a dual protection mode of "passive multi-layer sealing + active air pressure waterproofing," coupled with a three-level layered protection structure, enabling the motor protection level to reach the IP68 standard. This significantly improves the operational stability in high humidity and dusty environments, extends the motor's service life by two times compared to existing technologies, and eliminates the risk of failures due to water leakage, moisture, or static electricity accumulation. The ceramic shaft core further enhances the operating tolerance level to P4, ensuring high-speed operation accuracy. The silicone layer simultaneously achieves both vibration reduction and sealing effects, balancing protection and operational stability.

[0054] This technical solution solves the problems of insufficient waterproof and dustproof performance of existing ventilation drive motors, and easy water vapor seepage from the shaft end or housing gaps leading to motor damage. It overcomes the defects of poor sealing effect and low protection level of traditional single-layer protective structure. At the same time, it solves the safety hazards caused by static electricity accumulation during high-speed motor operation, as well as the technical problems of weak shaft end seal, insufficient high-speed operation accuracy, and vibration affecting operational stability. It is suitable for long-term stable operation under harsh working conditions such as humid and dusty environments.

[0055] Secondly, this application discloses a ventilation device, which adopts the following scheme: This application discloses a ventilation device, see [link to relevant documentation]. Figures 4 to 6The system includes a drive structure, a housing 3, a flow-guiding assembly 4, a control assembly 5, and a lighting assembly 6. The flow-guiding assembly 4 is mounted inside the housing 3 and is used to guide airflow and enhance the airflow output pressure of the drive structure. The flow-guiding assembly 4 has a flow-guiding chamber 41, and the drive structure is mounted on the flow-guiding assembly 4 with its output end located inside the flow-guiding chamber 41. The lighting assembly 6 is mounted on the housing 3 and located below the flow-guiding assembly 4. An airflow channel 31 is provided between the lighting assembly 6 and the housing 3 for airflow to enter the flow-guiding chamber 41, and the airflow channel 31 communicates with the flow-guiding chamber 41. The control assembly 5 is mounted on the outer surface of the flow-guiding assembly 4 and is used to control the operating status of the lighting assembly 6 and the drive structure.

[0056] Specifically, see Figure 5 and Figure 6 The drainage assembly 4 includes a drainage chamber 41, which is assembled inside the housing 3. The drainage chamber 41 has a first opening 410 and a second opening 411. The first opening 410 is used to allow indoor airflow to enter the drainage chamber 41, and the second opening 411 is used to discharge indoor airflow. The first opening 410 is connected to the airflow channel 31.

[0057] In one embodiment, the drainage chamber 41 includes a volute, which is fixedly assembled inside the outer casing 3. The volute is hollow to form a negative pressure chamber, drawing in indoor air and expelling it outdoors. The first opening 410 is specifically an air inlet on the volute, used to allow indoor air to enter the volute through the airflow channel 31. The second opening 411 is specifically an exhaust opening on the volute, used to exhaust indoor air.

[0058] Specifically, see Figure 4 and Figure 5 The inner wall of the drainage chamber 41 is provided with several swirling sections 412, which are evenly distributed circumferentially along the inner wall of the drainage chamber 41. The swirling sections 412 are used to guide the airflow to form a swirling flow, thereby accelerating the removal of water droplets and dust from the surface of the drive structure's output end.

[0059] In one embodiment, a plurality of swirl sections 412 include a plurality of spirally rising guide grooves opened on the inner wall of the volute. The guide grooves are evenly distributed circumferentially along the inner wall of the volute and have a spirally rising structure consistent with the rotation direction of the impeller. The cross-section of the guide groove is an arc-shaped groove, and the groove extends continuously from the air inlet side to the air outlet side to guide the airflow to form a swirling flow and accelerate the removal of water droplets and dust from the blade surface.

[0060] Specifically, the lighting component 6 includes a lighting module 61 and a heat dissipation component 62. The heat dissipation component 62 is connected to the housing 3 by means of a connector 33. The lighting module 61 is mounted on one end of the heat dissipation component 62, and a diffuser 620 is disposed on the end face of the other end near the airflow channel 31. The diffuser 620 is used to increase the heat dissipation area.

[0061] In one embodiment, the lighting module 61 includes an LED module that is electrically connected to the control component 5.

[0062] In one embodiment, the heat dissipation component 62 includes a heat dissipation substrate made of anodized aluminum. The diffuser 620 includes multiple heat dissipation fins disposed on and spaced apart on the heat dissipation substrate, integrating a thermosiphon structure and an isolation airflow channel to assist in heat dissipation using airflow.

[0063] In one embodiment, the connector 33 includes a spring link, the middle of which is fixedly connected to the middle of the heat dissipation substrate, and the two ends of which are respectively inserted into the cavity wall of the drainage chamber 41.

[0064] Specifically, see Figure 5 and Figure 6 A heat exchange assembly 7 is installed at the second opening 411. An element chamber 32 is located between the outer casing 3 and the drainage assembly 4. The control assembly 5 is installed inside the element chamber 32. The element chamber 32 and the drainage chamber 41 are two independent chambers to prevent air and moisture in the drainage chamber 41 from affecting the electronic components in the element chamber 32. The output end of the heat exchange assembly 7 is located inside the element chamber 32, while the input end is located at the second opening 411. The function of the heat exchange assembly 7 is to recover heat, reduce condensate accumulation, and transfer heat to the element chamber 32 to achieve dehumidification.

[0065] In addition, the heat exchange assembly 7 is provided with an extension channel 75, which is located at the input end to extend the heat exchange path. Furthermore, the bottom of the element chamber 32 is connected to a condensate drain pipe, which communicates with the second cavity port 411, so that the condensate in the element chamber 32 is drained into the second cavity port 411 and discharged by the airflow from the exhaust port.

[0066] In one embodiment, the heat exchange assembly 7 includes a refrigerant pump 71, a refrigerant storage tank 72, heat exchange fins 73, and heat exchange tubes 74. The refrigerant storage tank 72 and the refrigerant pump 71 are respectively mounted on the housing 3, with the refrigerant pump 71 located below the refrigerant storage tank 72, and both are located within the component chamber 32.

[0067] The heat exchange tube 74 is positioned at the middle of the second cavity opening 411, with both ends located within the element chamber 32. One end of the heat exchange tube 74 is connected to the upper surface of the refrigerant storage tank 72, and the other end is connected to the refrigerant flow pump 71. The other end of the refrigerant flow pump 71 is connected to the lower surface of the refrigerant storage tank 72. The refrigerant flow pump 71 is used to drive the refrigerant within the refrigerant storage tank 72 to circulate and absorb heat from the second cavity opening 411.

[0068] In one embodiment, there are multiple sets of heat exchange fins 73, which are spaced apart on a heat exchange tube 74, and the heat exchange tube 74 passes through multiple sets of heat exchange fins 73. The multiple sets of heat exchange fins 73 are stacked to form a circle, which matches the second cavity opening 411. The multiple sets of heat exchange fins 73 are each bent into an S-shaped structure, and the gaps between the multiple sets of heat exchange fins 73 form an extension channel 75. Specifically, the extension channel 75 is an S-shaped channel.

[0069] In one embodiment, see Figure 6 and Figure 7 The upper end face of the component chamber 32 is provided with an exhaust hole 320 to release the water vapor after heating, so as to keep the component chamber 32 in a dry working environment.

[0070] As the refrigerant flows within the heat exchange tube 74, it efficiently exchanges heat with the indoor air via the heat exchange fins 73, recovering heat to dehumidify the component chamber 32 and maintain a dry working environment. This addresses the issue of electronic components being easily damaged in a high-humidity environment for extended periods. Through this design, the ventilation device effectively reduces humidity within the component chamber 32 during operation, minimizing condensation buildup. Simultaneously, the optimized layout of the heat exchange assembly 7 optimizes the refrigerant flow path, improving overall heat exchange efficiency. Furthermore, the stacked structure of multiple sets of heat exchange fins 73 not only enhances heat exchange capacity but also further strengthens the absorption of heat from the second cavity 411, ensuring stable operation of the ventilation device under various environmental conditions.

[0071] In the above solution, the heat exchange fins 73 are made of aluminum. By bending the heat exchange fins 73 into an S-shape, the heat exchange path is extended, and the sensible heat recovery rate is improved. In addition, the surface of the heat exchange fins 73 is coated with a nano-coating, which can reduce condensate adhesion, significantly enhance the moisture resistance of the heat exchange component 7, and eliminate the risk of deformation, effectively solving the problem of condensate accumulation.

[0072] The control component 5 includes an electronic control board, which is installed inside the component chamber 32. The LED module and the ventilation motor are electrically connected to the electronic control board, which controls the operation of the LED module and the ventilation motor.

[0073] Implementation principle: The ventilation device uses a waterproof and dustproof drive structure as its core power component 11, and works in conjunction with the outer shell 3, the air diversion component 4, the control component 5 and the lighting component 6 to achieve closed-loop operation of the overall airflow circulation and auxiliary functions.

[0074] The drive structure is assembled on the diversion assembly 4. The output end of its air exchange impeller is located in the hollow diversion chamber 41 of the volute of the diversion assembly 4. When the air exchange motor is started, it drives the impeller to rotate at high speed, forming a negative pressure chamber inside the volute. The airflow in the chamber flows into the diversion chamber 41 through the airflow channel 31 between the outer shell 3 and the lighting assembly 6 and through the first cavity port 410 of the volute, thus completing the air intake process.

[0075] Multiple spiral-shaped arc-shaped guide grooves are evenly distributed around the inner wall of the volute as swirl sections 412. The direction of the guide grooves is consistent with the rotation direction of the impeller and extends continuously from the air inlet side to the air outlet side. The airflow entering the chamber forms a directional swirl under the guidance of the guide grooves. The swirling airflow continuously washes the surface of the ventilation impeller of the drive structure. With the help of the centrifugal force and scouring force of the airflow, the water droplets and dust attached to the impeller surface are quickly peeled off, avoiding the accumulation of water vapor and dust that affects the operation of the drive structure. After the airflow is pressurized by swirling, it is discharged outward through the second cavity 411 of the volute to complete the ventilation operation. The heat exchange component 7 installed at the exhaust port forms an extended heat exchange channel through the S-shaped bent heat exchange fins 73 and the through heat exchange tube 74. When the airflow flows through, it recovers the heat. The heat exchange tube 74 transfers the heat to the element chamber 32 between the outer shell 3 and the flow guide component 4. The recovered heat is used to dehumidify the inside of the chamber and reduce the retention of condensate in the chamber. At the same time, the surface of the S-shaped heat exchange fins 73 is coated with a nano-coating to further reduce the adhesion of condensate and prevent water vapor corrosion of the control component 5.

[0076] The lighting component 6 is mounted below the housing 3 and located below the drainage component 4. The heat generated by the LED module is conducted through the heat dissipation substrate made of anodized aluminum. The substrate integrates a thermosiphon structure and multiple heat dissipation fins with an isolation air duct. The heat dissipation area is increased by the diffusion structure. At the same time, the airflow flowing through the airflow channel 31 is used to assist in heat dissipation, ensuring the stable operation of the lighting module 61. The control board of the control component 5 is installed in the component chamber 32, which independently isolates the airflow and water vapor, and uniformly controls the start and stop of the drive structure and the working status of the lighting module 61, realizing the integrated control of ventilation and lighting functions.

[0077] This ventilation device integrates high-efficiency ventilation, waterproofing and dustproofing, automatic cleaning, heat recovery and dehumidification, and lighting and heat dissipation. It is suitable for indoor scenarios with high humidity, dust, and lighting. Relying on the IP68 waterproof and dustproof performance of the core drive structure, it is equipped with airflow diversion, heat exchange, and heat dissipation components to achieve stable operation in all scenarios.

[0078] This technical solution has several advantages. First, the swirling airflow formed by the spiral guide groove can automatically remove water droplets and dust from the surface of the impeller of the drive structure, maintaining the cleanliness of the drive components without manual cleaning, avoiding accumulation and failure, and further extending the service life of the core drive structure. Second, the S-shaped extended channel 75 heat exchange component 7 can effectively recover exhaust heat and actively dehumidify the component chamber 32, completely solving the problems of condensate accumulation and water vapor corrosion of components in the electronic control component chamber 32. Moreover, the nano-coated heat exchange fins 73 have no risk of deformation and are extremely resistant to moisture. Third, the anodized aluminum heat dissipation structure of the lighting component 6, combined with the airflow channel 31 for auxiliary heat dissipation, has excellent heat dissipation efficiency, ensuring long-term stable light emission of the LED module and avoiding high-temperature damage. Fourth, the overall structure has a high degree of integration, with ventilation, lighting, dehumidification and cleaning functions operating in synergy, without the need for additional independent equipment, and occupying little space. This technical solution mainly solves the problems of dust and water accumulation in the drive components of conventional ventilation devices, which require frequent manual maintenance. It overcomes the defects of waste of exhaust heat and high failure rate of electronic control components due to the difficulty in handling condensate in the chamber. At the same time, it solves the problems of poor heat dissipation after the lighting module 61 is integrated with the ventilation device and the single ventilation device has limited function. While retaining the waterproof and dustproof advantages of the core drive structure, it further improves the device's automated operation capability, environmental adaptability and service life, and is suitable for long-term stable use in harsh environments with high humidity and dust, such as bathrooms and kitchens.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A drive structure with waterproof and dustproof functions, characterized in that: It includes a drive component (1) and a protective component (2). The protective component (2) is mounted on the drive component (1). The drive component (1) is used to drive the airflow to achieve the ventilation function. The protective component (2) has a multi-layer protective structure to block external water vapor from entering the drive component (1).

2. The drive structure with waterproof and dustproof function according to claim 1, characterized in that: The drive assembly (1) includes a power component (11) and a pressure-generating component (12). The power component (11) is used to drive the pressure-generating component (12) to rotate. The pressure-generating component (12) is used to generate negative pressure to drive airflow. The protective assembly (2) is mounted on the power component (11) to block external water vapor from entering the power component (11).

3. The drive structure with waterproof and dustproof function according to claim 2, characterized in that: The protective component (2) has a first protective component (21), a second protective component (22) and a third protective component (23). The first protective component (21) encloses the power component (11) and serves as the core protection of the power component (11). The second protective component (22) encloses the first protective component (21) and is used to absorb the vibration generated when the power component (11) is running and to enhance the sealing. The third protective component (23) covers the second protective component (22) and is used to provide basic protection and structural support.

4. The drive structure with waterproof and dustproof function according to claim 2, characterized in that: The protective component (2) has a waterproof component (24) which is mounted on the output end of the power component (11). The waterproof component (24) is used to generate a radial air pressure gradient to form an active waterproof barrier.

5. The drive structure with waterproof and dustproof function according to claim 2, characterized in that: The output end of the power component (11) is equipped with an insulating output part (110), which has the properties of being resistant to moisture corrosion and wear.

6. The drive structure with waterproof and dustproof function according to claim 2, characterized in that: The pressure generating component (12) has a conductive part, which is assembled in the body of the pressure generating component (12) and is used to form an electrostatic discharge channel.

7. A ventilation device, comprising the driving structure with waterproof and dustproof function as described in any one of claims 1-6, characterized in that: It also includes a housing (3), a drainage component (4), a control component (5), and a lighting component (6). The drainage component (4) is assembled inside the housing (3) and is used to guide airflow and enhance the airflow output pressure of the drive structure. The drainage component (4) has a drainage chamber (41). The drive structure is assembled on the drainage component (4) and its output end is located inside the drainage chamber (41). The lighting component (6) is assembled on the housing (3) and is located below the drainage component (4). There is an airflow channel (31) between the lighting component (6) and the housing (3) for airflow to enter the drainage chamber (41) and the airflow channel (31) is connected to the drainage chamber (41). The control component (5) is assembled on the outer surface of the drainage component (4) and is used to control the working state of the lighting component (6) and the drive structure.

8. The ventilation device according to claim 7, characterized in that: The drainage chamber (41) has a first opening (410) and a second opening (411). The first opening (410) is used to allow indoor airflow to enter the drainage chamber (41), and the second opening (411) is used to discharge indoor airflow. The first opening (410) is connected to the airflow channel (31).

9. The ventilation device according to claim 7, characterized in that: The lighting component (6) includes a lighting module (61) and a heat dissipation component (62). The heat dissipation component (62) is connected to the housing (3) via a connector (33). The lighting module (61) is installed at one end of the heat dissipation component (62), and a diffuser (620) is provided on the end face of the other end near the airflow channel (31). The diffuser (620) is used to increase the heat dissipation area.

10. The ventilation device according to claim 7, characterized in that: The inner wall of the drainage chamber (41) is provided with a plurality of swirling sections (412), which are evenly distributed circumferentially along the inner wall of the drainage chamber (41); the swirling sections (412) are used to guide the airflow to form a swirling flow, thereby accelerating the separation of water droplets and dust from the surface of the output end of the drive structure.

11. The ventilation device according to claim 8, characterized in that: A heat exchange assembly (7) is provided on the second cavity (411). An element chamber (32) is provided between the outer shell (3) and the drainage assembly (4). The control assembly (5) is assembled in the element chamber (32). The output end of the heat exchange assembly (7) is located in the element chamber (32), and the input end is located on the second cavity (411). The heat exchange assembly (7) is used to recover heat and reduce condensate retention, as well as to transfer heat to the element chamber (32) for dehumidification.

12. The ventilation device according to claim 11, characterized in that: The heat exchange assembly (7) has an extension channel (75) located at the input end, and the extension channel (75) is used to extend the heat exchange path.

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