Garage ventilation system
By installing a non-powered circulation promotion device that connects the ventilation duct to the ground in the underground garage, air flow is driven by wind, gravity and thermal convection, which solves the problem of unnatural air exchange in the underground garage and ensures air safety and health during power outages.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING YUNYI CONSTR & INSTALLATION ENG CO LTD
- Filing Date
- 2025-04-15
- Publication Date
- 2026-05-05
AI Technical Summary
Underground parking garages, due to their enclosed spaces and unnatural air exchange, are prone to accumulating toxic gases. Existing CO concentration detection and active ventilation systems are also susceptible to problems during power outages, affecting human health and causing energy waste.
A non-powered circulation promotion device is adopted, which connects the ventilation duct to the ground. It uses wind power, gravity and thermal convection to drive air flow. It includes wind power module, gravity module and thermal convection module. The wind power module, gravity module and thermal convection module drive air flow in the ventilation duct, so as to accelerate air exchange without electricity.
In the event of a power outage, the non-powered circulation facilitator accelerates air exchange, improving air safety in underground parking garages, avoiding energy waste, and ensuring the health of personnel.
Smart Images
Figure CN224201826U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of ventilation technology, and in particular to a garage ventilation system. Background Technology
[0002] Commercial spaces, residential areas, and other buildings require ample parking, but surface space is limited, so underground parking garages are often constructed. Because underground garages are relatively enclosed and often quite large, air exchange is not as natural as above ground, leading to the accumulation of harmful and toxic gases that may endanger people's health.
[0003] During the construction of building fire protection projects, relevant units will design active ventilation systems and provide supporting CO monitoring systems to automatically detect the CO concentration in each zone of the underground garage. When the CO concentration exceeds the standard, the ventilation system of each zone will be automatically activated to ensure the health of personnel. When the CO concentration is normal, the system will automatically shut down to avoid energy waste caused by useless ventilation.
[0004] While the aforementioned system can maintain the CO concentration in the underground parking garage at a safe level, it is highly dependent on CO concentration detectors and active exhaust fans, and is prone to problems when encountering power outages or regional power outages caused by construction. Therefore, this application proposes a new technical solution. Utility Model Content
[0005] To improve the atmospheric safety of underground parking garages, this application provides a parking garage ventilation system.
[0006] This application provides a garage ventilation system, which adopts the following technical solution:
[0007] A garage ventilation system includes ventilation ducts and a non-powered circulation promotion device. The ventilation ducts are vertically distributed in multiple sections, with their lower ends connected to the underground garage and their upper ends connected to the ground. The powered circulation promotion device includes a wind module, a gravity module, and a heat convection module for driving the air in the ventilation ducts to rise and fall. The height of the gravity module is no higher than the ground surface. The upper section of each ventilation duct is equipped with a wind module, a gravity module, or a heat convection module, respectively.
[0008] Optionally, the gravity module includes an impeller, a turbine, a worm gear, a momentum amplification mechanism, and a pedal. A bracket is provided in the ventilation channel. The bracket is rotatably connected to a vertical rotating shaft. The upper end of the rotating shaft is coaxially fixed to the impeller, and the lower end is coaxially fixed to the turbine. The worm gear meshes with the turbine and is rotatably connected to the bracket.
[0009] The pedal is located above the ventilation channel and is vertically slidably connected to the ventilation channel. The momentum amplification mechanism is located below the pedal, serving as a support for the pedal and is installed in the ventilation channel.
[0010] Optionally, the momentum amplifier includes a driven gear, a driving gear, a transmission gear, a gear plate, and a spring. The driven gear is fixed to the outer end of the worm and meshes with the transmission gear. The transmission gear is coaxially fixed to the driving gear, and the driving gear meshes with the gear plate. One end of the gear plate is fixed to the lower part of the pedal, and the other end faces downward. The diameter of the transmission gear is larger than that of the driven gear. The spring is installed on the lower part of the pedal and is vertical. There are multiple impellers distributed along the length of the ventilation channel. The number of turbines, worms, driven gears, transmission gears, and driving gears corresponding to the impellers is the same as the number of impellers.
[0011] Optionally, a baffle is provided around the upper port of the ventilation channel. The baffle is located below the pedal and has an inner ring plate formed on its inner wall to serve as a support spring. Multiple notches are distributed along the upper edge of the baffle. The pedal extends out of the side of the baffle and multiple ventilation holes are opened in the extended section. A guide ring is also provided on the inner side of the baffle. A guide post is sleeved in the guide ring, and the upper end of the guide post (352) is fixed to the pedal.
[0012] Optionally, a heat-conducting rod is fixed to the lower end of the pedal, and a heat exchange pipe is provided on the inner wall of the ventilation channel surrounding the pedal. The heat exchange pipe is connected to the building's main water supply pipeline, and the inner cavity of the inner ring plate covers the ventilation channel in a top view.
[0013] Optionally, the heat convection module includes a heat-conducting cover, an inner structural frame, and a second heat-conducting rod. The heat-conducting cover is located above and separate from the ventilation channel. The inner structural frame is fixed to the ventilation channel and the heat-conducting cover is fixed on its upper part. One end of the second heat-conducting rod contacts or approaches the heat-conducting cover, and the other end extends into the ventilation channel.
[0014] Optionally, the heat-conducting cover is a transparent structure with a downward-facing arc surface, and the second heat-conducting rod is located on the central axis of the arc surface of the heat-conducting cover.
[0015] Optionally, the wind power module includes a non-powered wind cap installed at the upper end of the ventilation duct.
[0016] In summary, this application includes the following beneficial technical effects: the underground parking garage can also be connected to the ground atmosphere through ventilation channels, and a non-powered circulation promotion device driven by wind, gravity, and thermal convection helps the atmosphere to flow in the ventilation channels to accelerate air exchange, thereby improving the atmospheric safety of the underground parking garage in the event of power outages. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this application. Figure 1 ;
[0018] Figure 2 This is a schematic diagram of the structure of this application. Figure 2 ;
[0019] Figure 3 This is a schematic diagram of the structure of this application. Figure 3 ;
[0020] Figure 4 This is a partial structural schematic diagram of the gravity module of this application.
[0021] Explanation of reference numerals in the attached drawings: 1. Ventilation channel; 11. Support; 12. Rotating shaft one; 13. Baffle; 131. Inner ring plate; 2. Wind power module; 3. Gravity module; 31. Impeller; 32. Turbine; 33. Worm gear; 34. Momentum amplification mechanism; 341. Driven gear; 342. Driving gear; 343. Transmission gear; 344. Gear plate; 345. Spring; 35. Pedal; 351. Guide ring; 352. Guide column; 4. Heat convection module; 41. Heat conduction cover; 42. Inner structural frame; 43. Heat conduction rod two. Detailed Implementation
[0022] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.
[0023] This application discloses a garage ventilation system.
[0024] Reference Figure 1 , Figure 2 and Figure 3 The garage ventilation system includes ventilation duct 1 and a non-powered circulation promotion device. Ventilation duct 1 can be formed by concrete pouring, or by metal or plastic pipes. There are multiple vertical ventilation ducts 1, which are deployed according to the ventilation needs of the underground garage. It should be noted that ventilation duct 1 is different from existing light wells, etc., with a relatively small cross-sectional area, and is mainly deployed in key ventilation control locations, such as locations in the underground garage away from entrances, stairs, elevators, and fire smoke exhaust outlets. The end view of ventilation duct 1 can be circular or rectangular.
[0025] The non-powered circulation promotion device includes a wind module 2, a gravity module 3 and a heat convection module 4. Each module is installed in the upper part of each ventilation channel 1 to drive the air in the ventilation channel to rise and fall, and the height of the gravity module 3 is not higher than the ground surface.
[0026] According to the above configuration, the underground parking garage can also be connected to the ground atmosphere through ventilation duct 1. Furthermore, a non-powered circulation promotion device driven by wind, gravity, and thermal convection is used to help the air flow in ventilation duct 1 to accelerate air exchange, thereby improving the atmospheric safety of the underground parking garage in the event of power outages.
[0027] Reference Figure 4The gravity module 3 includes an impeller 31, a turbine 32, a worm gear 33, a momentum amplification mechanism 34, and a pedal 35. A bracket 11 is fixed in the ventilation channel 1. The bracket 11 is horizontally and rotatably connected to a vertical shaft 12. The upper end of the shaft 12 is coaxially fixed to the impeller 31, and the lower end is coaxially fixed to the turbine 32. The worm gear 33 meshes with the turbine 32 and is rotatably connected to the bracket 11.
[0028] The momentum amplifier mechanism 34 includes a driven gear 341, a driving gear 342, a transmission gear 343, a gear plate 344, and a spring 345. The driven gear 341 is fixed to the outer end of the worm gear 33 and meshes with the transmission gear 343. The transmission gear 343 is coaxially fixed to the driving gear 342, and the shaft of the driving gear 342 is rotatably connected to the ventilation channel 1. The driving gear 342 meshes with the gear plate 344, one end of which is fixed to the lower part of the pedal 35 and the other end faces downward.
[0029] Understandably, the toothed plate 344 is relatively long, but its tooth structure does not need to be distributed along its entire length; only a section is needed to drive the drive gear 342 to rotate. At the same time, because momentum needs to be amplified—meaning that a slight movement of the toothed plate 344 can cause the impeller 31 to rotate significantly—the diameter of the transmission gear 343 is larger than that of the driven gear 341.
[0030] The aforementioned spring 345 is mounted on the lower part of the pedal 35 and is vertically positioned, and the spring 345 is supported.
[0031] According to the above settings, as long as the pedal 35 is designed to be close to the tile surface, when people walk on the ground, they will step on the pedal 35 and press down on the pedal 35 with their weight. When the pedal 35 moves downward, it drives the toothed plate 344 to move downward. The toothed plate 344 drives the meshing drive gear 342 to rotate, and through the gear and worm gear effect, it causes the impeller 31 to rotate. The rotation of the impeller 31 can generate wind power to push the air to flow in the ventilation channel 1, so as to promote ventilation in the underground garage.
[0032] It should be noted that if the ventilation duct 1 is very long, then there should be multiple impellers 31 distributed along the ventilation duct 1, and the number of turbines 32, worm gears 33, driven gears 341, transmission gears 343, and driving gears 342 corresponding to the impellers 31 should be the same as the number of impellers 31. That is, multiple impellers 31 rotate synchronously and work together to draw air, so that even when the ventilation duct 1 is long, the accelerated circulation can be achieved better.
[0033] The impeller 31 and toothed plate 344 mentioned above are preferably made of lightweight, high-strength plastic to reduce the requirements for spring 345.
[0034] Furthermore, a baffle 13 is provided around the upper port of the ventilation channel 1. The baffle 13 is fixed with screws. The baffle 13 is located below the pedal 35 and its inner wall is formed with an inner ring plate 131 to support the spring 345. That is, the lower end of the spring 345 can be fixed on the inner ring plate 131. The spring 345 can be divided into two groups and symmetrically distributed below the pedal 35.
[0035] The upper edge of the baffle 13 has multiple notches, and the pedal 35 extends beyond the side of the baffle 13 with multiple ventilation holes on its extended portion. In one embodiment, the notches and ventilation holes are staggered; for example, the notches are located at the front and rear of the baffle 13, and the ventilation holes are located at the left and right of the baffle 13. The advantage of this arrangement is that it allows for smooth communication between the ventilation channel 1 and the ground, while preventing sewage and dirt from the ground from entering the ventilation channel 1 below the pedal 35.
[0036] Understandably, the ground structure below the ventilation opening should have a drain connected to the sewer to remove any accidentally entering sewage.
[0037] To prevent the pedal 35 from tilting during lifting and lowering and to reduce the chance of damage to the toothed plate 344, a guide ring 351 is provided on the inner side of the baffle 13. A guide post 352 is sleeved in the guide ring 351, and the upper end of the guide post 352 is fixed to the pedal 35.
[0038] In another embodiment of this application, a heat-conducting rod is fixed to the lower part of the pedal 35. The heat-conducting rod is preferably replaced by a rotating shaft 12 because its position is close to the central axis of the ventilation channel 1, which is advantageous, as will be explained later.
[0039] A heat exchange tube is installed on the inner wall of the ventilation channel 1 below the tread plate 35. The heat exchange tube is made of copper alloy, but water pipes can also be used to save costs. The heat exchange tubes are connected to the building's water supply system in a connected or parallel manner.
[0040] According to this setting, if the ground temperature is relatively high, as long as the pedal 35 is a heat-conducting plate, the heat can be transferred downward along the center of the ventilation channel 1 through the heat-conducting rod, so that the center temperature of the ventilation channel 1 is slightly higher; while the side wall of the ventilation channel 1 has heat exchange pipes through which water flows, so the temperature is relatively low. Therefore, the airflow in the middle of the ventilation channel 1 is upward and the airflow around it is downward, which can make a certain compensation for the accelerated air circulation when the impeller 31 is not rotating.
[0041] In another embodiment of this application, the heat convection module 4 includes a heat-conducting cover 41, an inner structural frame 42, and a second heat-conducting rod 43. The heat-conducting cover 41 is located above the ventilation channel 1 and is separate from the ventilation channel 1. The inner structural frame 42 is fixed to the ventilation channel 1 and the heat-conducting cover 41 is fixed at its upper part. One end of the second heat-conducting rod 43 contacts or approaches the heat-conducting cover 41, and the other end extends into the ventilation channel 1.
[0042] When the heat-conducting cover 41 is a metal, transparent hemispherical structure, the heat-conducting rod 43 is preferred to contact the heat-conducting cover 41; the reason for the upward curved surface is to have a larger area exposed to sunlight, that is, the heat convection module 4 is not like the aforementioned module, and it is better to be placed outdoors in a position where it can be exposed to sunlight.
[0043] After the heat-conducting rod 243 transfers heat downwards, it can perform the same function as the heat-conducting rod 1.
[0044] In another embodiment, the heat-conducting cover 41 is a transparent structure with a downward-facing arc surface on one side, and the second heat-conducting rod 43 is located on the central axis of the arc surface of the heat-conducting cover 41. In this case, the second heat-conducting rod 43 is preferably located below the heat-conducting cover 41, and preferably its upper surface is close to the focal point.
[0045] As described above, the heat-conducting cover 41 has a convex lens structure, which can concentrate light and transfer more heat to the heat-conducting rod 43. At the same time, because the upward-facing side is also curved, dirt is less likely to accumulate on the heat-conducting cover 41, and it can even be actively washed in rainy weather.
[0046] In another embodiment of this application, the wind power module includes a non-powered wind cap installed at the upper end of the ventilation channel 1. Since the non-powered wind cap is prior art, it will not be described in detail here.
[0047] The installation of a non-powered ventilator allows for the active extraction and propulsion of air within the ventilation duct 1 when wind blows across the ground.
[0048] The above are all preferred embodiments 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 garage ventilation system, characterized in that: It includes ventilation channels (1) and a non-powered circulation promotion device. The ventilation channels (1) are vertically distributed in multiple ways and the lower end is connected to the underground garage and the upper end is connected to the ground. The power circulation promotion device includes a wind module (2), a gravity module (3) and a heat convection module (4) for driving the air in the ventilation channels (1) to rise and fall. The height of the gravity module (3) is not higher than the ground surface. The upper section of each ventilation channel (1) is equipped with a wind module (2), a gravity module (3) or a heat convection module (4).
2. The garage ventilation system according to claim 1, characterized in that: The gravity module (3) includes an impeller (31), a turbine (32), a worm (33), a momentum amplification mechanism (34), and a pedal (35). A bracket (11) is provided in the ventilation channel (1). The bracket (11) is rotatably connected to a vertical shaft (12). The upper end of the shaft (12) is coaxially fixed to the impeller (31), and the lower end is coaxially fixed to the turbine (32). The worm (33) meshes with the turbine (32) and is rotatably connected to the bracket (11). The pedal (35) is located above the ventilation channel (1) and is vertically slidably connected to the ventilation channel (1). The momentum amplification mechanism (34) is located below the pedal (35) and serves as a support for the pedal (35) and is installed in the ventilation channel (1).
3. The garage ventilation system according to claim 2, characterized in that: The momentum amplifier includes a driven gear (341), a driving gear (342), a transmission gear (343), a toothed plate (344), and a spring (345). The driven gear (341) is fixed to the outer end of the worm (33) and meshes with the transmission gear (343). The transmission gear (343) is coaxially fixed to the driving gear (342). The driving gear (342) meshes with the toothed plate (344). One end of the toothed plate (344) is fixed to the lower part of the pedal (35), and the other end faces downward. The diameter of the transmission gear (343) is larger than that of the driven gear (341). The spring (345) is installed on the lower part of the pedal (35) and is vertical. There are multiple impellers (31) and they are distributed along the length of the ventilation channel (1). The number of turbines (32), worms (33), driven gears (341), transmission gears (343), and driving gears (342) corresponding to the impellers (31) is the same as the number of impellers (31).
4. The garage ventilation system according to claim 3, characterized in that: A baffle (13) is provided around the upper port of the ventilation channel (1). The baffle (13) is located below the pedal (35) and its inner wall is formed with an inner ring plate (131) used as a support spring (345). Multiple notches are distributed along the upper edge of the baffle (13). The pedal (35) extends out of the side of the baffle (13) and multiple ventilation holes are opened in the extended section. A guide ring (351) is also provided on the inner side of the baffle (13). A guide post (352) is sleeved in the guide ring (351). The upper end of the guide post (352) is fixed to the pedal (35).
5. The garage ventilation system according to claim 4, characterized in that: A heat-conducting rod is fixed to the lower end of the pedal (35), and a heat exchange pipe is provided on the inner wall of the ventilation channel (1) below the pedal (35). The heat exchange pipe is connected to the building's water supply main pipeline, and the top view of the inner cavity of the inner ring plate (131) covers the ventilation channel (1).
6. The garage ventilation system according to claim 3, characterized in that: The heat convection module (4) includes a heat-conducting cover (41), an inner structural frame (42), and a second heat-conducting rod (43). The heat-conducting cover (41) is located above the ventilation channel (1) and is separate from the ventilation channel (1). The inner structural frame (42) is fixed to the ventilation channel (1) and the heat-conducting cover (41) is fixed on the upper part. One end of the second heat-conducting rod (43) contacts or approaches the heat-conducting cover (41), and the other end extends into the ventilation channel (1).
7. The garage ventilation system according to claim 6, characterized in that: The heat-conducting cover (41) is a transparent structure with a downward-facing arc surface on one side, and the second heat-conducting rod (43) is located on the central axis of the arc surface of the heat-conducting cover (41).
8. The garage ventilation system according to claim 6, characterized in that: The wind module (2) includes a non-powered wind cap installed at the upper end of the ventilation channel (1).