Lateral air inlet duct structure and ventilation device applying same

Abstract

The invention discloses a lateral air inlet air duct structure and a ventilation device applying the same, and relates to the technical field of ventilation electrical appliances, the lateral air inlet air duct structure comprises a machine shell, a volute is arranged in the machine shell, the volute is provided with an air inlet and an air outlet, the air inlet is formed in the bottom of the machine shell, the air outlet is formed in one side of the machine shell, and a flow collecting space is formed in the volute; the air inlet and the air outlet are both communicated with the flow collecting space, an impeller assembly is arranged in the flow collecting space, a motor is installed on the volute, a rotating shaft of the impeller assembly is connected with the output end of the motor, and the impeller assembly corresponds to the air inlet; a lamp cover is connected below the machine shell, and an air inlet channel is formed between the lamp cover and the machine shell. And a lateral air inlet duct is formed between the lamp cover below the shell and the shell, so that the air volume loss is reduced. The impeller assembly is arranged corresponding to the air inlet and guides air into the flow collecting space during rotation, and the lateral air inlet amount is increased. When passing through the air inlet duct, airflow can dissipate heat for electrical elements on the lamp cover, and the working state of the elements is prevented from being affected by too high temperature.

Description

A side-intake air duct structure and a ventilation device using the same structure. Technical Field

[0001] This invention relates to the field of ventilation electrical technology, and in particular to a side-intake air duct structure and a ventilation device using the same structure. Background Technology

[0002] Currently, ventilation equipment mainly uses two methods: direct air intake and side air intake. Direct air intake is widely used due to its short airflow path, low resistance, and large air volume, but it is difficult to install in confined spaces due to space limitations. Side air intake, while suitable for confined spaces, suffers from insufficient air volume and low ventilation efficiency. Increasing the air inlet area leads to increased equipment size, and increasing fan speed results in increased noise and energy consumption. Symmetrical duct designs cannot solve the problems of severe airflow turbulence and high local pressure loss. In summary, existing side air intake technology has drawbacks such as insufficient air volume, poor airflow stability, and difficulty in integrating with lighting functions, severely limiting the overall performance of the equipment. Summary of the Invention

[0003] To improve the ventilation effect of an integrated indoor ventilation and lighting unit, this application provides a side-intake air duct structure.

[0004] This application provides a side-intake air duct structure with the following technical solution: A side-intake air duct structure includes: a housing, a volute housed inside the housing, the volute house having an air inlet and an air outlet, the air inlet housed at the bottom of the volute house, the air outlet housed on one side of the volute house, a flow-collecting space inside the volute house, the air inlet and the air outlet both communicating with the flow-collecting space, an impeller assembly housed within the flow-collecting space, a motor mounted on the volute house, the shaft of the impeller assembly connected to the output end of the motor, and the impeller assembly corresponding to the air inlet; a lamp cover connected below the housing, a certain gap between the lamp cover and the housing, forming an air intake air duct between the lamp cover and the housing.

[0005] By adopting the above technical solution, a gap is left between the lamp cover and the housing below, forming a side-intake air duct. The airflow directly enters the volute air inlet from the side, without additional detours, reducing airflow loss caused by the unreasonable side-intake path of traditional methods. The impeller assembly is positioned corresponding to the air inlet. When the motor drives the impeller assembly to rotate, it guides air into the collection space, captures side air, and forms an airflow that transports it along the collection space to the air outlet. This increases the side-intake volume without increasing the air inlet area or the fan speed, narrowing the efficiency gap with direct airflow. The lamp cover also accommodates the installation requirements of the lighting components, achieving a fusion of ventilation and lighting functions without occupying additional space, making the overall structure more compact and suitable for installation in narrow spaces. When the airflow passes through the intake duct, it can directly dissipate heat from the electrical components on the lamp cover, preventing components from affecting their working condition due to overheating and ensuring functional stability.

[0006] Optionally, the volute includes a front cover plate and a rear cover plate arranged in parallel, and a bottom shell disposed between the front cover plate and the rear cover plate. The air collection space is formed between the front cover plate, the rear cover plate and the bottom shell. The air inlet is disposed on the rear cover plate, the air outlet is disposed on the bottom shell, the motor is disposed on the front cover plate, and the impeller assembly is located on the side of the air collection space near the air inlet.

[0007] By adopting the above technical solution, the volute is formed by the parallel combination of the front cover plate, the rear cover plate, and the bottom shell, creating a sealed and regular airflow collection space. This adapts to the airflow path of lateral air intake, reducing leakage and diffusion during airflow and ensuring airflow delivery efficiency. After entering through the air inlet, the airflow can immediately contact the impeller assembly, reducing airflow path loss and improving energy transfer efficiency.

[0008] Optionally, the air outlet can be opened and closed, an exhaust port is provided on the front cover, and the motor is located at the center of the exhaust port.

[0009] By adopting the above technical solution, the air outlet is designed to open and close, actively blocking the airflow between the external environment and the inside of the volute when the equipment stops operating. This prevents outdoor air, odors, or foreign objects from entering the equipment through the air outlet, ensuring the cleanliness of the side air intake channel and not affecting the ventilation effect during the next startup. An exhaust vent is located on the front cover, with the motor at the center of the vent. A ring-shaped exhaust channel naturally forms around the motor, directly connected to the collection space. Driven by the impeller assembly, the airflow is transported outwards through the exhaust vent along the periphery of the motor, preventing the motor from obstructing the airflow and optimizing the exhaust path for smoother airflow. The motor can utilize the airflow to dissipate heat, maintaining a stable operating state and further adapting to the overall design requirements of side air intake. When the air outlet is open, the airflow, driven by the rotation of the impeller assembly, flows along the bottom of the volute and preferentially exits through the air outlet, with only a small portion exiting through the exhaust vent. When the air outlet is closed, the motor is turned on, and airflow will flow out from the exhaust vent, generating strong airflow vibration and aerodynamic noise, thus reminding the user that the motor is starting when the air outlet is closed.

[0010] Optionally, a check valve disc is provided at the air outlet, and the check valve disc is rotatably disposed at the air outlet.

[0011] By adopting the above technical solution, when the equipment starts up, the airflow is converted into outward airflow pressure by the rotation of the impeller assembly. This pressure acts on the check valve disc, pushing it to rotate around the shaft and open, providing an unobstructed channel for the airflow to exit and ensuring that the airflow can be discharged quickly and smoothly. When the equipment stops operating, the airflow pressure disappears, and the check valve disc rotates in the opposite direction under the action of the reset structure, tightly fitting against the edge of the air outlet, sealing the air outlet, preventing external airflow, fumes, and dust from entering the volute, preventing the impeller assembly from becoming contaminated and affecting the driving efficiency of the airflow, and at the same time blocking the backflow of odors and maintaining clean indoor air.

[0012] Optionally, an air outlet pipe is provided at the air outlet, and the check valve disc is disposed inside the air outlet pipe, with the rotating shaft of the check valve disc rotatably connected to the inner wall of the air outlet pipe.

[0013] By adopting the above technical solution, the air outlet duct provides a directional guiding channel for airflow discharge, facilitating connection to external pipelines or direct guidance to a designated area. The check valve disc is installed inside the air outlet duct, and its rotating shaft is rotatably connected to the inner wall of the air outlet duct, thus restricting the rotation trajectory of the check valve disc within the air outlet duct channel.

[0014] Optionally, the air outlet duct is connected to the front cover plate, the rear cover plate, and the bottom shell. The cross-section of the air outlet duct near the bottom shell is rectangular, and the cross-section of the air outlet duct away from the bottom shell is circular. The side wall cross-section of the air outlet duct transitions from rectangular to circular.

[0015] By adopting the above technical solution, the end of the air outlet duct near the bottom shell has a rectangular cross-section, and the end away from the bottom shell has a circular cross-section. The cross-section of the side wall of the air outlet duct smoothly transitions from rectangular to circular, avoiding airflow vortices caused by abrupt changes in cross-section. This allows the airflow to flow more smoothly when it is discharged from the air outlet, reduces local pressure loss, and further ensures the overall efficiency of air outlet and exhaust.

[0016] Optionally, the front cover plate is provided with a plurality of connecting ears extending inward from the inner wall of the exhaust port. The connecting ears are connected to the periphery of the motor, and an exhaust channel is formed between the motor and the inner wall of the exhaust port.

[0017] By adopting the above technical solution, the front cover plate extends inward around the exhaust vent, with multiple connecting ears evenly distributed along the circumference of the exhaust vent. These ears form a stable connection with the motor from multiple directions, ensuring the motor is fixed in the center of the exhaust vent. The extended design of the connecting ears does not occupy the main ventilation area of ​​the exhaust vent. A ring-shaped exhaust channel is formed between the motor and the exhaust vent, allowing airflow to be evenly distributed around the motor after passing through the collection space, and then smoothly discharged through the exhaust vent without obstruction by the motor installation. During the airflow process, heat is carried away from the motor surface, achieving passive heat dissipation, maintaining a stable operating temperature, and ensuring continuous airflow drive.

[0018] Optionally, the impeller assembly includes an impeller chassis, the output end of the motor is connected to the center of the impeller chassis, and multiple blades are arranged around the center of the impeller chassis. The upper ends of the multiple blades are connected to a reinforcing ring, and the reinforcing ring is arranged parallel to the impeller chassis.

[0019] By adopting the above technical solution, multiple blades are evenly arranged around the center of the impeller chassis. During rotation, they generate a continuous airflow driving force, capturing the airflow entering from the side and propelling it along the blade surface to achieve airflow acceleration and transport. A reinforcing ring is connected to the upper end of each blade, positioned parallel to the impeller chassis, connecting multiple independent blades into a whole. This enhances the structural correlation between the blades, improves the overall rigidity of the impeller assembly, effectively resists the pressure and vibration generated by the airflow during high-speed rotation, reduces blade deformation, and makes the airflow field more stable, further improving lateral air intake efficiency.

[0020] Optionally, the blade has a hook-shaped bend on the side near the center of the impeller chassis. The bend is located at the connection between the blade and the impeller chassis, and the tip of the bend is connected to the impeller chassis.

[0021] By adopting the above technical solution, the hook-shaped bend on the side of the blade near the center of the impeller chassis is set at the connection between the blade and the impeller chassis. The tip is fixed to the chassis, increasing the contact area between the blade and the impeller chassis, making the connection more secure, dispersing the stress transmitted to the impeller chassis when the blade rotates, improving the structural strength of the blade during high-speed operation, and preventing the blade from breaking or deforming due to airflow impact or vibration. The arc-shaped surface of the hook-shaped bend can guide the airflow entering the blade area, allowing the airflow to flow smoothly along the curved surface of the bend and conform to the blade's motion trajectory, reducing the impact and separation between the airflow and the blade, reducing the energy loss caused by airflow disturbance, improving the impeller's driving efficiency and aerodynamic performance, and further optimizing the lateral air intake effect.

[0022] Optionally, the bottom shell is provided with a connecting arm on its periphery, the connecting arm is provided with a fastening element, the fastening element is provided with a fastening tongue at one end away from the connecting arm, the fastening element is arranged parallel to the housing, the housing has a fastening part, the fastening part has a fastening hole that cooperates with the fastening tongue, the fastening tongue is located in the fastening hole, and the fastening part is provided with a pin that passes through the housing and the fastening element.

[0023] By adopting the above technical solution, the fastening component is arranged parallel to the housing, and the fastening tongue at the end precisely embeds into the fastening hole of the housing's fastening part, achieving rapid positioning and initial fixation of the volute and the housing, simplifying the assembly process and improving installation efficiency. The cooperation between the fastening tongue and the fastening hole restricts the relative displacement of the volute and the housing in the horizontal direction. The pin at the fastening part passes through the housing and the fastening component, further strengthening the connection strength and enhancing the overall connection's firmness. This fixing structure can resist the vibration and impact force generated by the impeller rotation during equipment operation, preventing loosening between the volute and the housing.

[0024] Optionally, the housing is provided with a hanging assembly, and the top of the lamp cover is provided with a hanging part, and the hanging assembly is connected to the hanging part.

[0025] By adopting the above technical solution, the hanging components inside the housing are connected to the hanging part on the top of the lamp cover, using a suspended assembly method. This eliminates the need for complex mounting holes, simplifying the installation and disassembly process of the lamp cover. Simultaneously, the hanging method allows for control of the gap between the lamp cover and the housing. This connection method reduces rigid contact between the lamp cover and the housing, minimizing vibration transmission to the lamp cover and ensuring its stability.

[0026] Optionally, the hanging assembly includes two lifting lugs disposed on the inner wall of the housing. The lifting lugs have horizontally penetrating lifting holes. A hanging rod is disposed between the two lifting lugs. Both ends of the hanging rod pass through the two hanging holes respectively. A hook is provided at one end of the hanging rod that passes through the hanging hole. The hook cooperates with the lifting lug. The hanging part has a hanging hole, and the middle part of the hanging rod passes through the hanging hole.

[0027] By adopting the above technical solution, the middle of the suspension rod passes through the hanging hole of the lamp cover hanging part, suspending the lamp cover below the machine housing. After the two ends of the suspension rod pass through the hanging holes, they are fixed by hooks and lifting lugs. The connection method is simple and reliable, and can quickly achieve the positioning and fixation of the suspension rod inside the machine housing. The symmetrically distributed lifting lugs cooperate with the suspension rod to make the lamp cover more evenly stressed, improve the suspension stability, and reduce the shaking of the lamp cover during equipment operation.

[0028] Optionally, the boom includes a torsion spring portion and a hanging rod portion connected to both ends of the torsion spring portion. The hook is disposed at the end of the hanging rod portion away from the torsion spring portion. The hanging portion includes a horizontally disposed hanging member that passes through the center of the torsion spring portion.

[0029] This application also discloses a ventilation device, including the aforementioned inclined volute structure, wherein an LED light source and an ambient light are provided on the lamp cover, and the air intake duct is provided corresponding to the LED light source and the ambient light.

[0030] By adopting the above technical solution, the ventilation device integrates the lighting component on the lamp cover, realizing the integrated design of ventilation and lighting. The equipment can simultaneously meet the indoor ventilation and lighting needs, with richer functions and saving installation space and equipment costs.

[0031] Optionally, it also includes a light groove arranged in a ring around the lamp cover, the ambient light is disposed in the light groove, and a ring light guide plate can be detachably connected in the light groove, the ring light guide plate being disposed below the ambient light.

[0032] By adopting the above technical solution, the light trough provides a dedicated installation space for the ambient light, allowing for concealed installation and avoiding glare caused by direct light, resulting in a cleaner and more aesthetically pleasing appearance of the light cover. The ring-shaped light guide plate below the ambient light is made of PMMA material, which has high light transmittance and can evenly diffuse the light from the ambient light, transforming the point light source into a soft surface light source, allowing for a wider and more even light coverage and creating a comfortable ambient lighting effect. The ring-shaped light guide plate is detachably connected to the light trough, allowing the light guide plate to be removed for cleaning or replacement without disassembling the entire light cover, facilitating later maintenance. It also allows for the replacement of light guide plates with different light transmittance effects as needed, improving the flexibility of the equipment.

[0033] In summary, this application includes at least one of the following beneficial effects: 1. A gap is reserved between the lamp cover and the housing below, forming a lateral air intake duct. Airflow can directly enter the volute air intake from the side without additional detours, reducing airflow loss caused by the unreasonable traditional lateral air intake path. Without increasing the air intake area or fan speed, the lateral air intake volume is increased, narrowing the efficiency gap with direct air intake. Simultaneously, the lamp cover accommodates the installation requirements of the lighting components, achieving a fusion of ventilation and lighting functions without requiring additional space, making the overall structure more compact and adaptable to installation requirements in narrow spaces. When the airflow passes through the air intake duct, it directly dissipates heat from the electrical components on the lamp cover, preventing components from affecting their working state due to excessive temperature and ensuring functional stability.

[0034] 2. The air outlet features an openable / closable design. When the equipment stops operating, it actively blocks the airflow between the external environment and the inside of the casing, preventing outdoor air, odors, or foreign objects from entering the equipment in reverse. This ensures the cleanliness of the lateral air intake channel and does not affect the subsequent air intake effect. The layout of the front cover exhaust vent and the central motor creates a ring-shaped exhaust channel around the motor. After being driven by the impeller, the airflow is smoothly discharged along the periphery of the motor, avoiding any obstruction of the airflow by the motor. Simultaneously, the motor uses the airflow to achieve its own heat dissipation. When the air outlet is closed, the motor starts, and the airflow from the exhaust vent generates aerodynamic noise, reminding the user that the air outlet is closed. This prevents equipment malfunctions due to airflow blockage, improving the safety and convenience of equipment use.

[0035] 3. The hook-shaped bend on the side of the blade near the center of the impeller chassis is located at the connection between the blade and the chassis, with its tip fixed to the chassis. This increases the contact area between the blade and the chassis, disperses the stress transmitted during blade rotation, improves the structural strength of the blade at high speeds, and prevents the blade from breaking or deforming due to airflow impact or vibration. The curved surface of the hook-shaped bend guides the airflow entering the blade area, allowing the airflow to flow smoothly along the curved surface and conform to the blade's trajectory, reducing the impact and separation between the airflow and the blade, reducing energy loss caused by airflow disturbance, improving the impeller's driving efficiency and aerodynamic performance, and further optimizing the lateral air intake effect. Attached Figure Description

[0036] Figure 1 is a schematic diagram of a side intake duct structure in an embodiment of this application.

[0037] Figure 2 is a side view of a side intake duct structure according to an embodiment of this application.

[0038] Figure 3 is an exploded view of the volute in an embodiment of this application.

[0039] Figure 4 is a schematic diagram of the volute structure in an embodiment of this application.

[0040] Figure 5 is a schematic diagram of the impeller assembly in an embodiment of this application.

[0041] Figure 6 is a partial view of a side intake duct structure in an embodiment of this application.

[0042] Figure 7 is a structural schematic diagram of the hanging assembly in an embodiment of this application.

[0043] Figure 8 is a schematic diagram of a side intake duct structure in an embodiment of this application.

[0044] Figure 9 is a schematic diagram of the flow guiding component in an embodiment of this application.

[0045] Figure 10 is an exploded view of the ventilation device in an embodiment of this application.

[0046] Explanation of reference numerals in the attached drawings: 1. Housing; 101. Snap-fit ​​hole; 11. Snap-fit ​​part; 12. Mounting bracket; 13. Shaped hole mounting part; 2. Volute; 201. Air inlet; 202. Air outlet; 203. Collecting space; 204. Exhaust outlet; 21. Front cover plate; 211. Connecting ear; 22. Rear cover plate; 23. Bottom shell; 231. Guide rib; 24. Connecting arm; 241. Snap-fit ​​piece; 242. Snap-fit ​​tongue; 3. Impeller assembly; 31. Impeller base; 32. Blade; 321. Bending part; 33. Reinforcing ring; 4. Motor; 5. Lamp cover; 501. Hanging hole; 51. Hanging component; 52. Ambient light; 53. Light trough; 54. Annular light guide plate; 6. Air outlet duct; 61. Check valve disc; 7. Hanging assembly; 701. Hanging hole; 71. Hanging lug; 72. Hanging rod; 721. Hook; 722. Torsion spring part; 723. Hanging rod part; 8. Airflow guide assembly; 81. Upper ring part; 8101. Clearance groove; 811. Fixing ring; 812. Rotating ring; 813. Rack; 82. Lower ring part; 8201. Guide groove; 83. Oscillating airflow guide plate; 84. Gear. Detailed Implementation

[0047] The present application will be further described in detail below with reference to Figures 1-10.

[0048] This application discloses a side-intake air duct structure. Referring to Figures 1 to 4, it includes a housing 1, within which a volute 2 is disposed. The volute 2 has an air inlet 201 located at the bottom and an air outlet 202 located on the side. The volute 2 also has a collection space 203, which communicates with the air inlet 201 and the air outlet 202. An impeller assembly 3 is disposed within the collection space 203, corresponding to the air inlet 201. A motor 4 is mounted on the volute 2, and the output end of the motor 4 is connected to the shaft of the impeller assembly 3. A lamp cover 5 is connected to the lower part of the housing 1, with a gap between the lamp cover 5 and the housing 1, forming an air intake duct. Specifically, the housing 1 is mounted on a mounting bracket 12, which is used to connect to the ceiling of the room. The housing 1 is positioned above the ceiling, and the mounting bracket 12 is mounted below the ceiling. The air intake duct is located between the mounting bracket 12 and the lamp cover 5. The volute 2 inside the housing 1, through the layout of the bottom air inlet 201 and the side air outlet 202, forms a directional airflow path in conjunction with the collection space 203. The impeller assembly 3 is set corresponding to the air inlet 201. When the motor 4 drives the impeller assembly 3 to rotate, it can directly act on the airflow entering from the air inlet duct, pushing the airflow along the collection space 203 to the side air outlet 202, reducing the path loss of the airflow. The gap between the housing 1 and the lamp cover 5 forms the air inlet duct, and the airflow directly enters the air inlet 201 of the volute 2 from the side without additional detour, reducing the air volume loss of traditional side air intake. The housing 1 is connected to the ceiling through the mounting bracket 12. The air inlet duct is located between the mounting bracket 12 and the lamp cover 5, using the assembly space to form an air intake channel, eliminating the need for additional air intake structures, making the overall structure more compact and suitable for narrow spaces for ceiling installation. The air intake duct formed by the gap between the lamp cover 5 and the housing 1 allows the airflow to dissipate heat from the electrical components on the lamp cover 5, preventing the components from affecting their working condition due to excessive temperature.

[0049] In a preferred embodiment, referring to FIG1, a shaped hole mounting part 13 is also provided on the periphery of the housing, and the shaped hole mounting part 13 has a ventilation hole, which allows air to enter the housing at a position outside the air intake duct.

[0050] In a preferred embodiment, referring to FIG3, the volute 2 includes a front cover plate 21 and a rear cover plate 22, which are arranged in parallel, with the front cover plate 21 positioned above and the rear cover plate 22 positioned below. A bottom shell 23 is arranged around the periphery of the front cover plate 21 and the rear cover plate 22. The front cover plate 21, the rear cover plate 22, and the bottom shell 23 enclose a flow-collecting space 203. The volute 2 is formed by the parallel arrangement of the front cover plate 21 and the rear cover plate 22 and the surrounding bottom shell 23, which encloses the flow-collecting space 203. The parallel arrangement of the front cover plate 21 and the rear cover plate 22 makes the upper and lower walls of the flow-collecting space 203 flat, reducing turbulence in the flow-collecting space 203, making the airflow smoother, and reducing local pressure loss.

[0051] In a preferred embodiment, referring to Figure 3, an air outlet duct 6 is provided at the air outlet 202. The air outlet duct 6 is connected to the front cover plate 21, the rear cover plate 22, and the bottom shell 23 on the side near the volute 2. The cross-section of the air outlet duct 6 at the end near the volute 2 is rectangular, and the cross-section of the air outlet duct 6 at the end away from the volute 2 is circular. The side wall cross-section of the air outlet duct 6 transitions smoothly from rectangular to circular. The rectangular cross-section at the end of the air outlet duct 6 near the bottom shell 23 and the circular cross-section at the end away from the bottom shell 23, with a smooth transition from rectangular to circular, avoids airflow vortices caused by abrupt changes in cross-section, allowing for smoother airflow at the air outlet 202, reducing local pressure loss, and further ensuring the overall efficiency of lateral air intake. The connection between the air outlet duct 6 and the front cover plate 21, the rear cover plate 22, and the bottom shell 23 enhances the connection between the air outlet duct 6 and the volute 2, preventing the air outlet duct 6 from loosening during equipment operation and ensuring the stability of airflow discharge. The rectangular cross-section of the exhaust duct 6 near the volute 2 is adapted to the structure of the exhaust port 202 of the volute 2, reducing airflow leakage at the connection. The circular cross-section of the exhaust duct 6 away from the volute 2 is adapted to conventional pipe interfaces, facilitating connection with external pipes and improving equipment versatility. The smooth transition from rectangular to circular on the sidewall of the exhaust duct 6 avoids abrupt changes in cross-section that could cause airflow turbulence, allowing for smoother airflow within the exhaust duct 6, reducing local pressure loss, and improving overall airflow efficiency.

[0052] In a preferred embodiment, referring to Figure 3, the air outlet 202 is closable, and a check valve disc 61 is provided at the air outlet 202. The check valve disc 61 is rotatably mounted inside the wall of the air outlet duct 6. Specifically, the rotating shaft of the check valve disc 61 is located in the middle and is rotatably connected to the wall of the air outlet duct 6. A torsion spring is sleeved on the rotating shaft and connected to the wall of the air outlet duct 6. The closable design of the air outlet 202, in conjunction with the check valve disc 61 inside the air outlet duct 6, allows the air outlet 202 to be closed when the equipment stops operating, preventing external air, odors, or foreign objects from entering the volute 2 through the air outlet 202 in the reverse direction, ensuring the cleanliness of the lateral air intake channel and not affecting the ventilation effect of the next operation. The rotating shaft of the check valve disc 61 is located in the middle and is rotatably connected to the wall of the air outlet duct 6, making the rotation trajectory of the check valve disc 61 stable and the opening and closing action more reliable. The torsion spring sleeved on the rotating shaft is connected to the wall of the air outlet pipe 6. When the equipment stops running, it can drive the check valve disc 61 to reset, ensuring the air outlet 202 is sealed and improving the backflow prevention effect.

[0053] In a preferred embodiment, referring to Figures 1 and 3, an exhaust port 204 is provided on the front cover plate 21, with a motor positioned at the center of the exhaust port 204. Multiple connecting ears 211 extend inward from the inner wall of the exhaust port 204, connecting to the periphery of the motor 4. An exhaust channel is formed between the motor 4 and the inner wall of the exhaust port 204. The exhaust port 204 on the front cover plate 21 provides an additional exhaust path for airflow. The motor 4 is positioned at the center of the exhaust port 204, and the connecting ears 211 extending from the inner wall of the exhaust port 204 connect to the periphery of the motor 4, which can stably fix the motor 4 at the center of the exhaust port 204, preventing the motor 4 from shifting during high-speed operation and ensuring stable drive of the airflow by the impeller assembly 3. The extended design of the connecting ears 211 does not occupy the main ventilation area of ​​the exhaust port 204. The exhaust channel formed between the motor 4 and the inner wall of the exhaust port 204 allows the airflow in the collection space 203 to be smoothly discharged along the channel, preventing the motor 4 from obstructing the airflow discharge. When the airflow passes through the exhaust duct, it can carry away the heat on the surface of the motor 4, thereby achieving passive heat dissipation of the motor 4, maintaining the stable operating temperature of the motor 4, and ensuring continuous drive of the airflow.

[0054] In a preferred embodiment, referring to FIG4, the impeller assembly 3 includes an impeller chassis 31. The output end of the motor 4 is connected to the center of the impeller chassis 31. Multiple blades 32 are arranged around the center of the impeller chassis 31. The upper ends of the multiple blades 32 are connected to a reinforcing ring 33. The reinforcing ring is arranged parallel to the impeller chassis 31. The impeller chassis 31 is connected to the output end of the motor 4. The driving force of the motor 4 is transmitted to the impeller assembly 3, driving the blades 32 to rotate synchronously, providing a stable driving force for the airflow. The multiple blades 32 arranged around the impeller chassis 31 can capture the airflow entering from the air intake channel when the impeller assembly 3 rotates, and push the airflow along the surface of the blades 32 to achieve airflow acceleration and delivery. The reinforcing ring 33 connected to the upper end of the blades 32 is parallel to the impeller chassis 31, which can connect the multiple blades 32 into a whole, enhance the structural correlation between the blades 32, improve the overall rigidity of the impeller assembly 3, reduce the deformation of the blades 32 when rotating at high speed, make the flow field formed by the airflow more stable, and improve the air intake efficiency.

[0055] In a preferred embodiment, referring to FIG4, the blade 32 has a hook-shaped bend 321 on the side near the center of the impeller chassis 31. The tip of the bend 321 extends toward the center of the impeller chassis 31. The bend 321 is located at the connection position between the blade 32 and the impeller chassis 31, and the tip of the bend 321 is connected to the impeller chassis 31. The hook-shaped bend 321 of the blade 32 near the center of the impeller chassis 31, located at the connection position between the blade 32 and the impeller chassis 31, and with its tip connected to the impeller chassis 31, can increase the connection area between the blade 32 and the impeller chassis 31, making the connection between the two more secure, dispersing the stress transmitted when the blade 32 rotates, improving the structural strength of the blade 32 when it operates at high speed, and preventing the blade 32 from breaking or deforming due to airflow impact or vibration. The curved surface of the hook-shaped bend 321 can guide the airflow entering the blade 32 area, allowing the airflow to flow smoothly along the curved surface of the bend 321 and conform to the movement trajectory of the blade 32, reducing the impact between the airflow and the blade 32, reducing the energy loss caused by airflow disturbance, improving the impeller's driving efficiency for airflow, and optimizing the air intake effect.

[0056] In a preferred embodiment, referring to FIG5, a plurality of connecting arms 24 are provided extending from the periphery of the bottom shell 23. A fastening member 241 is connected to the connecting arm 24. The fastening member 241 is arranged parallel to the corresponding side wall of the housing 1. A fastening tongue 242 is provided at the end of the fastening member 241 away from the connecting arm 24. The housing 1 has a fastening part 11 at the position corresponding to the fastening member 241. The fastening part 11 is protruding in the direction of the fastening member 241. A fastening hole 101 is opened in the fastening part 11 to cooperate with the fastening tongue 242. The fastening tongue 242 passes through the fastening hole 101. A pin is provided at the fastening part 11 to pass through the housing 1 and the fastening member 241. The engagement of the latching tongue 242 and the latching hole 101 restricts the relative displacement of the volute 2 and the housing 1 in the horizontal direction. The pin at the latching part 11 passes through the housing 1 and the latching part 241, which can further enhance the connection between the volute 2 and the housing 1, prevent the volute 2 and the housing 1 from loosening during equipment operation, ensure uniform gap between the impeller assembly 3 and the volute 2, prevent airflow leakage, and maintain air intake efficiency.

[0057] In a preferred embodiment, referring to Figures 6 and 7, a hanging assembly 7 is provided inside the housing 1, and a hanging part is provided on the top of the lamp cover 5. The hanging assembly 7 and the hanging part are connected in cooperation. Specifically, two sets of hanging assemblies 7 and hanging parts are provided. The hanging assembly 7 includes two lifting lugs 71 disposed on the inner wall of the housing 1. A lifting hole 701 is opened horizontally through the lifting lug 71. A hanging rod 72 passes through the two lifting holes 701. A hook is provided at one end of the hanging rod 72 that passes through the hanging hole 501. The hook and the lifting lug 71 are engaged for hanging. The hanging part includes a horizontally disposed hanging member 51. The hanging member 51 is connected to the top of the lamp cover 5. A hanging hole 501 is left between the hanging member 51 and the lamp cover 5. The hanging rod 72 passes through the hanging hole 501. The hanging assembly 7 inside the housing 1 is connected in cooperation with the hanging part on the top of the lamp cover 5. The hanging assembly adopts a suspended assembly method, which eliminates the need to open complex installation holes on the housing 1 and the lamp cover 5, simplifying the installation and disassembly process of the lamp cover 5. Two sets of hanging components 7 are correspondingly set with the hanging part, which can make the force on the lamp cover 5 more even and improve the suspension stability. The hanging lug 71 on the inner wall of the housing 1 cooperates with the hanging rod 72 through the hanging hole 701. After the hanging rod 72 passes through the hanging hole 701, it is hung on the hanging lug 71 through the hook, which can quickly fix the hanging rod 72 in the housing 1. The hanging rod 72 passes through the hanging hole 501 of the lamp cover 5 hanging part, which can stably suspend the lamp cover 5 below the housing 1, control the gap size between the lamp cover 5 and the housing 1, ensure the unobstructed air intake duct, and allow the airflow to smoothly enter the air intake 201 of the volute 2.

[0058] In a preferred embodiment, referring to FIG7, the suspension rod 72 includes a torsion spring portion 722 and hanging rods connected to both ends of the torsion spring portion 722. A hook 721 is located at the end of the hanging rod portion 723 away from the torsion spring portion 722. The suspension member 51 passes through the center of the torsion spring portion 722. The torsion spring portion 722 of the suspension rod 72 cooperates with the hanging rod portions 723 at both ends. The hook 721 of the hanging rod portion 723 can be stably hung with the lifting lug 71 of the housing 1, ensuring the secure installation of the suspension rod 72 within the housing 1. The suspension member 51 passes through the center of the torsion spring portion 722. The elastic deformation capability of the torsion spring portion 722 can accommodate slight positional deviations during the assembly of the suspension member 51, improving the assembly error tolerance and making the installation of the lamp cover 5 more convenient. During equipment operation, the torsion spring portion 722 can absorb the vibration generated by the motor 4 and impeller, reducing the transmission of vibration to the lamp cover 5, preventing the lamp cover 5 from shaking and causing fluctuations in the air intake duct gap, ensuring stable airflow, and maintaining the operational stability of the lamp cover 5 and the electrical components above it.

[0059] In a preferred embodiment, referring to Figure 3, a plurality of parallel guide ribs 231 are protruding from the inner sidewall of the bottom shell 23, and the guide ribs 231 are spirally upward along the sidewall of the bottom shell 23. The parallel arrangement and spiral upward spiral of the guide ribs 231 on the inner sidewall of the bottom shell 23 can guide the airflow in the collection space 203, guiding the airflow to flow along the spiral trajectory of the guide ribs 231. This can suppress the secondary flow phenomenon generated when the airflow flows in the volute 2, reduce turbulence and eddies in the collection space 203, and reduce local pressure loss. The spiral layout of the guide ribs 231 can be matched with the rotation direction of the impeller assembly 3, allowing the airflow to better conform to the structure of the collection space 203, improving the airflow delivery efficiency, and further optimizing the air intake effect.

[0060] In a preferred embodiment, referring to Figures 8 and 9, the bottom of the volute 2 is further provided with a flow guiding component 8, which is arranged in a circular shape. The hollow area in the middle of the flow guiding component 8 corresponds to the air inlet 201. The flow guiding component 8 includes an upper ring 81 and a lower ring 82. A swinging flow guiding plate 83 is provided between the upper ring 81 and the lower ring 82. The upper ring 81 includes a fixed ring 811 and a rotating ring 812. The rotating ring 812 is rotatably connected to the outside of the fixed ring 811. A rack 813 is provided on the outside of the rotating ring 812. The bottom of the volute 2 is provided with a gear 84 that meshes with the rack 813. The shaft of the gear 84 is connected to a micro motor. The upper and lower ends of the rotating shaft on the side of the oscillating guide vane 83 near the center of the guide assembly 8 are rotatably connected to the fixed ring 811 and the lower ring 82, respectively. The rotating ring 812 has a clearance groove 8101 along the radial direction of the guide assembly 8, and the lower ring 82 has a guide groove 8201 on its outer side. The guide groove 8201 is arranged in an arc around the center of the rotating shaft on the side of the oscillating guide vane 83 near the center of the guide assembly 8. Specifically, the oscillating guide vane 83 has multiple sets of spacing around the guide assembly 8. The fixed ring 811 of the upper ring 81 cooperates with the lower ring 82 to provide rotational support for the oscillating guide vane 83. The rotating ring 812 meshes with the gear 84 at the bottom of the volute 2 through the outer rack 813. When the micro motor drives the gear 84 to rotate, it can drive the rotating ring 812 to rotate. Then, through the cooperation of the clearance groove 8101 and the guide groove 8201, it drives the oscillating guide vane 83 to oscillate around its own axis, adjust the guiding angle, adapt to different air intake requirements, optimize the path of airflow into the volute 2, and reduce airflow turbulence. Multiple sets of oscillating guide vanes 83 are arranged around the guiding assembly 8, which can fully cover the air inlet 201 area, improve the uniformity of guiding, further reduce airflow pressure loss, and improve air intake efficiency.

[0061] This embodiment also provides a ventilation device, including the aforementioned lateral air intake duct structure. An LED light source and an ambient light 52 are mounted on the lamp cover 5, and the air intake duct is positioned corresponding to the LED light source and ambient light 52. A ring-shaped light guide plate 54 is positioned below the ambient light 52. The ventilation device integrates the aforementioned lateral air intake duct structure, and simultaneously mounts an LED light source and an ambient light 52 on the lamp cover 5, achieving an integrated design of ventilation and lighting functions. This eliminates the need for additional lighting equipment, saving installation space and equipment costs. Because the air intake duct is positioned corresponding to the LED light source and ambient light 52, when airflow passes through the air intake duct, it can directly carry away the heat generated by the LED light source and ambient light 52 during operation, preventing the light source from experiencing luminous efficacy decay or shortened lifespan due to excessive temperature, ensuring the stability of the lighting function, and simultaneously not interfering with the airflow distribution, thus achieving coordinated operation of ventilation and lighting functions.

[0062] In a preferred embodiment, referring to FIG10, an annular light groove 53 is provided on the bottom periphery of the lamp cover 5. The light groove 53 opens downwards, and the ambient light 52 is disposed within the light groove 53. An annular light guide plate 54 is detachably connected within the light groove 53 and is positioned below the ambient light 52. The downward-opening annular light groove 53 on the bottom periphery of the lamp cover 5 provides dedicated installation space for the ambient light 52, allowing for concealed installation of the ambient light 52, avoiding glare caused by direct light, and making the lamp cover 5 more aesthetically pleasing. The detachable annular light guide plate 54 within the light groove 53, positioned below the ambient light 52, can evenly diffuse the light from the ambient light 52, transforming the point light source into a soft surface light source, resulting in a wider and more uniform light coverage and creating a comfortable ambient lighting effect. The detachable design of the annular light guide plate 54 allows for cleaning or replacement without disassembling the entire lamp cover 5, facilitating later maintenance, while not occupying air intake duct space, ensuring smooth airflow and maintaining air intake efficiency.

[0063] The above are all preferred embodiments of this application. These embodiments are merely explanations of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A side-intake air duct structure, characterized in that, include: A housing (1) is provided inside the housing (1), and the volute (2) has an air inlet (201) and an air outlet (202). The air inlet (201) is located at the bottom of the volute (2), and the air outlet (202) is located on one side of the volute (2). The volute (2) has a flow collection space (203), and both the air inlet (201) and the air outlet (202) are connected to the flow collection space (203). An impeller assembly (3) is provided in the collection space (203), and a motor (4) is installed on the volute (2). The shaft of the impeller assembly (3) is connected to the output end of the motor (4). The impeller assembly (3) is provided corresponding to the air inlet (201). A lamp cover (5) is connected to the bottom of the housing (1). There is a gap between the lamp cover (5) and the housing (1). An air intake duct is formed between the lamp cover (5) and the housing (1).

2. The side intake duct structure according to claim 1, characterized in that: The volute (2) includes a front cover plate (21) and a rear cover plate (22) arranged in parallel, and a bottom shell (23) disposed between the front cover plate (21) and the rear cover plate (22). The flow collection space (203) is formed between the front cover plate (21), the rear cover plate (22) and the bottom shell (23). The air inlet (201) is disposed on the rear cover plate (22), the air outlet (202) is disposed on the bottom shell (23), the motor (4) is disposed on the front cover plate (21), and the impeller assembly (3) is located on the side of the flow collection space (203) near the air inlet (201).

3. The side intake duct structure according to claim 2, characterized in that: The air outlet (202) is openable and closable, and the front cover plate (21) is provided with an exhaust port (204). The motor (4) is located at the center of the exhaust port (204).

4. The side intake duct structure according to claim 3, characterized in that: A check valve disc (61) is provided at the air outlet (202), and the check valve disc (61) is rotatably disposed at the air outlet (202).

5. A side intake duct structure according to claim 4, characterized in that: An air outlet (202) is provided with an air outlet pipe (6), and a check valve disc (61) is provided inside the air outlet pipe (6). The rotating shaft of the check valve disc (61) is rotatably connected to the inner wall of the air outlet pipe (6).

6. A side intake duct structure according to claim 5, characterized in that: The air outlet pipe (6) is connected to the front cover plate (21), the rear cover plate (22) and the bottom shell (23). The cross-section of the air outlet pipe (6) near the bottom shell (23) is rectangular, and the cross-section of the air outlet pipe (6) away from the bottom shell (23) is circular. The side wall cross-section of the air outlet pipe (6) transitions from rectangular to circular.

7. A side intake duct structure according to claim 3, characterized in that: The front cover plate (21) is provided with multiple connecting ears (211) extending inward from the inner wall of the exhaust port (204). The connecting ears (211) are connected to the periphery of the motor (4), and an exhaust channel is formed between the motor (4) and the inner wall of the exhaust port (204).

8. A side intake duct structure according to claim 1, characterized in that: The impeller assembly (3) includes an impeller chassis (31), the output end of the motor (4) is connected to the center of the impeller chassis (31), and multiple blades (32) are arranged around the center of the impeller chassis (31). The upper ends of the multiple blades (32) are connected to a reinforcing ring (33), and the reinforcing ring (33) is arranged parallel to the impeller chassis (31).

9. A side intake duct structure according to claim 8, characterized in that: The blade (32) has a hook-shaped bend (321) on the side near the center of the impeller chassis (31). The bend (321) is located at the connection between the blade (32) and the impeller chassis (31), and the tip of the bend (321) is connected to the impeller chassis (31).

10. A side intake duct structure according to claim 2, characterized in that: The bottom shell (23) is provided with a connecting arm (24) on its periphery. The connecting arm (24) is provided with a fastening element (241). The fastening element (241) is provided with a fastening tongue (242) at one end away from the connecting arm (24). The fastening element (241) is arranged parallel to the housing (1). The housing (1) has a fastening part (11). The fastening part (11) is provided with a fastening hole (101) that cooperates with the fastening tongue (242). The fastening tongue (242) is located in the fastening hole (101). The fastening part (11) is provided with a pin that passes through the housing (1) and the fastening element (241).

11. A side intake duct structure according to claim 1, characterized in that: The housing (1) is provided with a hanging assembly (7), and the top of the lamp cover (5) is provided with a hanging part. The hanging assembly (7) is connected to the hanging part.

12. A lateral air intake duct structure according to claim 11, characterized in that: The hanging assembly (7) includes two lifting lugs (71) disposed on the inner wall of the housing (1). The lifting lugs (71) have horizontally penetrating lifting holes (701). A hanging rod (72) is disposed between the two lifting lugs. The two ends of the hanging rod (72) are respectively disposed through the two lifting holes (701). A hook (721) is provided at one end of the hanging rod (72) that passes through the lifting hole (701). The hook (721) cooperates with the lifting lug (71). The hanging part has a hanging hole (501). The middle part of the hanging rod (72) is disposed through the hanging hole (501).

13. A lateral air intake duct structure according to claim 12, characterized in that: The boom (72) includes a torsion spring (722) and a hanging rod (723) connected to both ends of the torsion spring (722). The hook (721) is disposed at the end of the hanging rod (723) away from the torsion spring (722). The hanging part includes a horizontally disposed hanging member (51) that passes through the center of the torsion spring (722).

14. A ventilation device comprising a lateral air intake duct structure as described in any one of claims 1-13, characterized in that: The lamp cover (5) is provided with an LED light source and an ambient light (52), and the air intake duct is provided corresponding to the LED light source and the ambient light (52).

15. A ventilation device according to claim 14, characterized in that: It also includes a light groove (53) arranged in a ring around the lamp cover (5), the ambient light (52) is arranged in the light groove (53), and a ring light guide plate (54) can be detachably connected in the light groove (53), the ring light guide plate (54) is arranged below the ambient light (52).

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