A venturi driven, fin protected, roof ventilator device with high discharge rate and noiseless operation

Abstract

The invention discloses a Venturi driven, fin protected roof ventilator device with high discharge rate and noiseless operation. The device (100) comprises an outer shell (101) comprising a funnel unit (102), a bottom ring (103), and a drain hole (104). The device (100) incorporates a fin cylinder (105) featuring a circumferential fin set (106) comprising fin support (109), fin arm (110), and a fin cover (107) within the outer shell (101) to form a fluid path inducing negative pressure for air extraction. The device (100) achieves multifold discharge rate than traditional roof ventilators under varying wind conditions, creating effective ventilation through the venturi effect. The compact design of the device (100) ensures efficient functionality.

Description

Internal Ref: OR25C090PCT03 TITLE OF THE INVENTION A venturi driven, fin protected, roof ventilator device with high discharge rate and noiseless operation PREAMBLE TO THE DESCRIPTION:

[0001] The following specification particularly describes the invention, and the manner in which it has to be performed: DESCRIPTION OF THE INVENTION Technical field of the invention

[0002] The present invention pertains to roof ventilator devices. More specifically, the invention relates to a novel configuration of roof ventilator devices aimed at optimizing aerodynamic and kinematic performance, achieving a multifold discharge rate than conventional roof ventilators, ensuring noiseless operation during air circulation and maintenance free protection against external elements. Background of the invention

[0003] Ventilation is essential in maintaining a healthy and comfortable indoor environment by regulating air quality, temperature, and humidity. Roof ventilation, in particular, is critical in extending the longevity of buildings, including homes, industries, and warehouses, by circulating fresh air and mitigating heat accumulation. There are two types of roof ventilation: passive and active. Passive ventilation utilizes natural force, such as wind and buoyancy to regulate air circulation. Active ventilation also known as the mechanical ventilation that circulate fresh air using mechanical devices, rather than relyingInternal Ref: OR25C090PCT03 on airflow through small holes or cracks in a home’s walls, roof, or windows. Passive ventilation devices, such as ridge vents or static vents, rely on natural airflow dynamics but often fall short in efficiency, particularly in regions with low wind speeds and in buildings with specific architectural constraints. The limitations primarily revolve around discharge rates, protection mechanisms against external elements, particularly rainwater and solid particles and involves higher operational cost and maintenance requirements.

[0004] Traditional roof ventilators encounter hurdles in achieving optimal discharge rates, particularly in variable wind conditions. Efficient air extraction is paramount for sustaining effective ventilation within enclosed spaces, and inconsistent discharge rates can result in inadequate air circulation. The deficiency compromises the system's ability to regulate indoor temperature and maintain air quality at optimal levels. The operational noise emanating from conventional roof ventilators poses a significant concern. Elevated noise levels disrupt the ambient environment and can adversely impact the comfort of individuals within the space. The reduction of noise generation is not only vital for fostering a tranquil indoor atmosphere but also a critical factor in ensuring compliance with noise regulations and standards.

[0005] Existing roof ventilator designs often lack robust protective measures against external elements, such as rainwater, hail and solid particles. Adverse weather conditions, like rainfall, can lead to water ingress into the ventilator, potentially causing interior damage and compromising the purity of the extracted air. Intrusion by solid particles, including dust and debris, poses a threat to the system's longevity and overall functionality.

[0006] Conventional ventilation designs often encounter difficulties to maintain consistent performance, especially when faced with varying wind conditions. Changes in wind speed and direction can significantly affect the ability of these ventilators to create the necessary negative pressure for efficient air extraction. It is crucial for a ventilation system to performInternal Ref: OR25C090PCT03 reliably under a wide range of environmental conditions to ensure continuous and effective air circulation, thereby maintaining a consistently comfortable indoor environment.

[0007] Moreover, the demand for energy-efficient and eco-friendly ventilation solutions has risen in recent years, driven by increasing energy costs and environmental awareness. There is a growing need for ventilation systems that are not only efficient in air exchange but also operate quietly, require minimal to no maintenance, and perform effectively regardless of external wind conditions.

[0008] In order to overcome the drawbacks of the existing systems, several technologies were developed over the decades to significantly improve aerodynamic efficiency and maintain noiseless operation.

[0009] The Patent Application No. US9222691B2 entitled “Static roof ventilator” discloses a roof ventilator comprising: a first module with a passageway defined along a longitudinal axis. This module includes a louver support, parallel to the passageway axis, and a louver designed to create a draft within the passageway when wind impacts it. The louver, extending from the support, is positioned peripherally to the passageway. A second module, attached to the first, defines another passageway in fluid communication with the first and aligned along a separate longitudinal axis. This second module also includes a louver support, parallel to its passageway axis, and a louver that generates a draft within the second passageway as wind blows onto it. Like in the first module, the louver extends from the support and is located peripherally to the passageway. A fastening mechanism functionally connects the first and second modules, ensuring the louver supports of both modules are biased towards each other.

[0010] The Patent Application No. US11067097B2 entitled “Ventilator and method for mounting a ventilator” discloses a ventilator equipped with an electrical drive and at least one functional unit, which can either rotate or remain stationary. This functional unit isInternal Ref: OR25C090PCT03 associated with the drive or a structural component of the drive for generating and / or influencing an air current. The arrangement of the functional unit is either coaxial to the drive, or placed before or after it. The association between the functional unit and the drive is achieved either directly or indirectly, through interlocking and mutual bracing of connection means, allowing for both positive and non-positive connections.

[0011] The Patent Application No. US9599358B2 entitled “Hybrid ventilator” discloses a ventilator that includes a stator for mounting onto a structure and a rotor designed to mount and rotate relative to the stator. The ventilator is equipped with one or more elements that can be driven by wind, mounted to it. Additionally, a motor is incorporated, situated between the ventilator rotor and stator, which allows for the selective motor-driven rotation of the ventilator rotor.

[0012] In light of these challenges, as energy efficiency and environmental considerations become more critical, there is a demand for innovative roof ventilator solutions that overcome the limitations and provide a comprehensive solution to the challenges faced by conventional systems. Summary of the Invention

[0013] The present invention introduces a roof ventilator device, addressing inherent limitations associated with conventional systems. Through the inventive features and advanced technological integration, the present disclosure propels the field of roof ventilation forward, specifically targeting challenges pertaining to discharge rates, noise generation, protective and maintenance free functionalities against external elements.

[0014] The present invention incorporates a novel aerodynamic and kinematic configuration, showcasing a fin cylinder positioned centrally over a bottom ring equipped with a circumferential fin set and capped by a fin cover. The configuration optimizesInternal Ref: OR25C090PCT03 aerodynamic and kinematic efficiency, promoting effective air extraction and consistent airflow, irrespective of varying wind conditions. A distinctive feature of the invention lies in its capacity to achieve a multifold higher discharge rate than conventional roof ventilator under both low and high wind conditions. The versatility ensures optimal functionality across diverse environmental scenarios, providing a reliable solution for efficient air circulation. The present invention places a significant emphasis on creating a serene indoor environment through a noiseless operation.

[0015] Moreover, the present invention incorporates a protective feature to prevent the ingress of rainwater, hail and solid particles indoors. A fin cover, positioned over the top sections of the fin cylinder, acts as an effective barrier. The cover prevents the entry of solid particles into the inner circumferential opening of the fin cylinder and also aids in breaking down rainwater into fine droplets.

[0016] Further, the top opening of the funnel unit is covered by a mesh cover to protect the entry of large-sized solid particles into the funnel unit. Additionally, the mesh cover breaks the rainwater particles into fine droplets, thereby reducing the velocity.

[0017] Furthermore, the present invention introduces a ventilation effect that enhances overall performance. As wind flows over the funnel unit, negative pressure is created, inducing air extraction from indoors. The ventilation effect, coupled with the sudden expansion of air, creates an efficient and dynamic system that contributes to the superior functionality of the roof ventilator device. Brief description of the drawings

[0018] The foregoing and other features of embodiments will become more apparent from the following detailed description of embodiments when read in conjunction with the accompanying drawings. In the drawings, like reference numerals refer to like elements.Internal Ref: OR25C090PCT03

[0019] Figure 1a illustrates an isometric view of a roof ventilator device, in accordance with an embodiment of the invention.

[0020] Figure 1b illustrates a sectional view of the roof ventilator device, in accordance with an embodiment of the invention.

[0021] Figure 2a illustrates a sectional view of the fin cylinder, in accordance with an embodiment of the invention.

[0022] Figure 2b illustrates an isometric view of the fin cylinder, in accordance with an embodiment of the invention.

[0023] Figure 3a illustrates the direction of airflow through a series of circumferential fin sets, in accordance with an embodiment of the invention.

[0024] Figure 3b illustrates the functionality of circumferential fin sets in trapping and redirecting solid and water particles away from the clean air stream, in accordance with an embodiment of the invention.

[0025] Figure 4a illustrates a line diagram of the top view of the fin cylinder explaining the movement of air within the device, in accordance with an embodiment of the invention.

[0026] Figure 4b illustrates a line diagram of the top view of the fin cylinder, explaining the particle filtration mechanism within the fin cylinder of the device, in accordance with an embodiment of the invention.

[0027] Figure 5 an isometric view of a fin column, in accordance with an embodiment of the invention.Internal Ref: OR25C090PCT03

[0028] Figures 6a-6f illustrate exemplary line diagrams of various configurations of circumferential fin sets for a fin cylinder, in accordance with an embodiment of the invention.

[0029] Figures 7a-7j illustrate exemplary line diagrams showcasing various design adaptations of the bottom rings, the funnel unit and the fin cylinder for a roof ventilator device, in accordance with an embodiment of the invention.

[0030] Figures 8a-8d illustrate exemplary line diagrams of various sectional configurations of circumferential fin sets for a fin cylinder based on axial orientation, in accordance with an embodiment of the invention.

[0031] Figure 9 illustrates an exemplary design modification for a roof ventilator device aimed at preventing birds from perching on exposed components, in accordance with an embodiment of the invention.

[0032] Table 1 illustrates a comparative analysis of discharge rates for different roof ventilator types at a wind velocity of 3 m / sec, in accordance with an embodiment of the invention. Detailed description of the invention

[0033] In order to more clearly and concisely describe and point out the subject matter of the claimed invention, the following definitions are provided for specific terms, which are used in the following written description.

[0034] The term “Venturi Effect” refers to the reduction in fluid pressure that results when a fluid flows through a constricted section of a pipe or parallel to the tip of the pipe. In theInternal Ref: OR25C090PCT03 context of the present invention, the principle is applied to create a negative pressure zone that aids in drawing air out from a ventilated space.

[0035] The term “Bernoulli's Principle” states that the total mechanical energy of the moving fluid comprising the gravitational potential energy of elevation, the energy associated with the fluid pressure and the kinetic energy of the fluid motion, remains constant. For the present invention, the principle is relevant to understand how airflow speed affects pressure within the ventilation system, thereby facilitating efficient air circulation.

[0036] The term “Roof Ventilation” refers to the process of exchanging air between the inside of a building and the outside atmosphere through the roof area. Roof ventilation is crucial for controlling indoor temperature, removing moisture, and reducing the accumulation of indoor pollutants.

[0037] The term “Airflow Rate” is a measure of the volume of air moved by the ventilation system per unit of time, typically expressed in cubic feet per minute (CFM). It is a key performance metric for the present invention, indicating the efficiency of air exchange within the ventilated space.

[0038] The term “Wind Speed Sensitivity” refers to the ability of a ventilation device to adapt its performance based on the external wind speed. The present invention is designed to be effective even at low wind speeds, maintaining proportionate airflow rate with the varying external wind conditions.

[0039] The term “Multifold Discharge Rate” refers to the capability of present invention to expel air at multiple times the rate of conventional roof ventilators. This term quantifies the increased efficiency of the present invention in terms of air volume expelled over a given period of time.Internal Ref: OR25C090PCT03

[0040] The term “Maintenance-Free or Zero Maintenance” in the context of the present invention indicates that the device does not require regular repairs, or replacement of parts to maintain its functionality and efficiency over time, contrasting with traditional ventilation systems that often require such maintenance.

[0041] The term “Noiseless Operation” in the context of the present invention refers to the system's ability to function without generating audible noise, a significant advantage over traditional ventilators that often produce noticeable operational sounds. This is particularly relevant in environments where noise pollution is a concern.

[0042] The term “Leakage Protection” in the context of the present invention refers to the design features that prevent the ingress of water, debris, or other external elements into the ventilated space, ensuring the integrity and cleanliness of the indoor environment.

[0043] The term “Solid particles” in the context of the present invention indicates any non-liquid materials that enters the roof ventilator device from the external environment including dust, pollen, leaves, and other airborne particles that are commonly found in outdoor air.

[0044] Reference will now be made in detail to the description of the present subject matter, which are shown in the figures. Various changes and modifications obvious to one skilled in the art to which the invention pertains are deemed to be within the spirit, scope and contemplation of the invention.

[0045] The present invention discloses a roof ventilator device designed to overcome the shortcomings of existing devices. By integrating an outer shell and a fin cylinder comprising circumferential fin sets, the device aims to significantly improve air drawing efficiency, achieve a multifold discharge rate than conventional roof ventilators, andInternal Ref: OR25C090PCT03 maintain noiseless operation. The arrangement of circumferential fin sets prevents the entry of rainwater and solid particles, ensuring the purity of the indoor air. Additionally, the unique funnel shaped configuration of the outer shell creates a ventilation through the Venturi (and Bernoulli) effect and sudden expansion of air, contributing to enhanced performance under varying wind conditions. A drain hole situated directly under the funnel unit enables effective expulsion of rainwater and solid particles accumulated during the operational process, ensuring smooth and efficient operation of the device.

[0046] Figure 1a illustrates an isometric view of a roof ventilator device, in accordance with an embodiment of the invention. The device (100) comprises an outer shell (101), incorporating a funnel unit (102), a bottom ring (103) and a drain hole (104). The structural integrity of the device (100) is bolstered by the supporting bottom ring (103), which is designed for a roof installation and is affixed to the roof through multiple fastening components and joints. The strategically positioned drain hole (104) underneath the funnel unit (102) facilitates the efficient drainage of rainwater and solid particles.

[0047] Further, the device (100) comprises a fin cylinder (105) centrally positioned over the bottom ring (103) and within the funnel unit (102), with the height less than or equal to the level of the funnel unit (102). The fin cylinder (105) incorporates a plurality of specifically designed circumferential fin sets (106) spanning the circumference of the fin cylinder (105) and shielded by a fin cover (107) at the apex. The top opening of the funnel unit (102) is protected by a mesh cover (111) to protect the entry of large-sized solid particles into the funnel unit (102). The mesh cover breaks the rainwater particles into fine droplets. The design of the circumferential fin set (106) is tailored to allow only the outward flow of air from inside the building to the atmosphere, effectively preventing the ingress of rainwater and solid particles from the atmosphere back into the interior.

[0048] In an embodiment of the present invention, the wind flowing above the roof, influence the device (100). The flow of the wind above the device (100) generates negativeInternal Ref: OR25C090PCT03 pressure at the top opening of the funnel unit (102). Capitalizing on the pressure differential between the top and bottom sections of the funnel unit (102), air is compelled to traverse from the bottom ring (103) to the top opening through the fin cylinder (105). The continual process facilitates the extraction of air from the enclosed space on roof on which the device (100) is fixed, permitting fresh air to infiltrate the interior through windows or openings. The strategically positioned circumferential fin sets (106) encircling the fin cylinder (105) effectively intercept rainwater and solid particles to enter indoors, allowing only air to traverse the roof ventilator.

[0049] Figure 1b illustrates a sectional view of the roof ventilator device, in accordance with an embodiment of the invention. In an embodiment, the bottom ring (103) preferably of linear cylindrical shape is affixed to both the fin cylinder (105) and the funnel unit (102). The distinctive configuration of the funnel unit (102) incorporates the drain hole (104) positioned at the base, strategically designed to ensure the drainage of rainwater and solid particles. A significant operational consideration arises from the sudden expansion in the cross-sectional area between the bottom ring (103) and the funnel unit (102). The abrupt increase in area results in the diversion of airflow away from the boundary of the funnel unit (102), leading to a consequential airflow from the indoors through the bottom ring (103). The arrows disclose the path of air flow through the device (100).

[0050] Figure 2a illustrates a sectional view of the fin cylinder, in accordance with an embodiment of the invention. The arrangement of the series of circumferential fin sets (106) is designed to create multiple fin columns (108) in a cylindrical form factor that allows air from the indoors effortlessly through the circumferential fin sets (106). Further, the arrows indicate the direction of airflow, with the indoor air entering laterally at the circumferential fin sets (106) and moving upward through the fin cylinder (105).

[0051] In an embodiment, the fin cylinder (105) with a plurality of circumferential fin sets (106) extending radially inward, are designed to direct airflow in a specific pattern. Further,Internal Ref: OR25C090PCT03 the circumferential fin sets (106) are uniformly spaced to create channels that guide the air upwards, contributing to the efficiency of the ventilation process.

[0052] Figure 2b illustrates an isometric view of the fin cylinder, in accordance with an embodiment of the invention. The isometric view provides a three-dimensional representation of the geometry of the fin cylinder (105) and configuration of the circumferential fin sets (106). The curvature of the fin cylinder (105) and the spiral orientation of the circumferential fin sets (106) showcase the design considerations for optimizing airflow dynamics.

[0053] Figure 3a illustrates the direction of airflow through a series of circumferential fin sets, in accordance with an embodiment of the invention. The circumferential fin sets (106) are arranged in a staggered pattern to facilitate smooth airflow from the inside of the fin cylinder (105) to the outside. The negative pressure around the fin cylinder (105) created by the venturi effect sucks the air from the bottom ring (103) and flows through the fins provided across the periphery of the fin cylinder (105). A plurality of directional arrows indicates the airflow pattern as the air navigates through the circumferential fin sets (106) from indoors. Each circumferential fin set (106) comprises a plurality of fin supports (109) and fin arms (110) structured to channel the air effectively from the indoor space to the atmosphere while maintaining the aerodynamic flow.

[0054] Figure 3b illustrates the functionality of circumferential fin sets in trapping and redirecting solid and water particles away from the clean air stream, in accordance with an embodiment of the invention. The scattered dots in the Figure 3b represent the solid and water particles that are intercepted by the circumferential fin sets (106) from the external environment. The solid and water particles are subjected to a multi-stage filtration process, depicted by three perpendicular straight lines across Figure 3b from left to right. At each filtration stage, the design of the circumferential fin sets (106) effectively captures and haltsInternal Ref: OR25C090PCT03 the progression of the particles, preventing them from advancing further into the device (100) thereby preserving the quality of air within the internal environment.

[0055] Figure 4a illustrates a line diagram of the top view of the fin cylinder, in accordance with an embodiment of the invention. The air, exiting from the interior, is channeled by the angled circumferential fin sets (106), composed of fin supports (109) and fin arms (110), situated along the inner perimeter of the fin cylinder (105). The design of the angled circumferential fin sets (106) guides the air towards the outer atmosphere. As the airflow diverges at the fin cylinder's (105) outer perimeter, the circumferential fin sets (106) ensure a smooth and outward flow, thereby optimizing the ventilation efficiency of the device (100).

[0056] Figure 4b illustrates another line diagram of the top view of the fin cylinder, in accordance with an embodiment of the invention. The array of dots dispersed around the fin cylinder (105) represents solid and water particles. The arrows illustrate the inward trajectory of the solid and water particles, demonstrating their initial approach towards the fin cylinder (105). The strategic angular junction between the fin support (109) and the fin arm (110) intercepts the progress of the particles. The design ensures that solid and water particles are deflected in a downward direction, facilitating their expulsion through drainage holes (103) located at the base of the funnel unit (102), thereby preventing the entry of solid and water particles into the roof ventilator device (100).

[0057] The efficiency, discharge rate, and safety of the roof ventilator device (100) are intricately linked to the shape and size of the funnel unit (102), the fin cylinder (105), the circumferential fin sets (106), and the bottom ring (103). The optimization of the parameters is achieved through various modifications in the component designs and arrangements, thereby enhancing the overall performance of the ventilator device (100).Internal Ref: OR25C090PCT03

[0058] Figure 5 illustrates an isometric view of a fin column, in accordance with an embodiment of the invention. These circumferential fin sets (106) are arranged in a staggered pattern to create the plurality of fin columns (108) that direct air from indoors, facilitating effective ventilation while simultaneously preventing the entry of solid and water particles.

[0059] The following example is offered to illustrate the various aspects of the invention. However, the example is not intended to limit or define the scope of the invention in any manner. Example 1: Variations of circumferential fin sets’ configurations for optimized airflow and filtration in a fin cylinder

[0060] Figures 6a-6f illustrate exemplary line diagrams of various configurations of circumferential fin sets for a fin cylinder, in accordance with an embodiment of the invention. The figures showcase different geometrical shapes of circumferential fin sets (106) that contribute to airflow modulation and particle filtration capabilities of the device (100).

[0061] Figure 6a features the circumferential fin sets (106) arranged in a 'Y' shape, connected end-to-end along the circumference of the fin cylinder (105). The specific geometry of the 'Y' shaped fins is designed to modulate the airflow and to effectively filter out foreign particles, ensuring an efficient air exchange while preventing blockages. Figure 6b features the circumferential fin sets (106) in a 'Zig-zag' pattern, which can be oriented vertically or horizontally around the fin cylinder (105). The configuration is tailored to create turbulence in the airflow, thereby enhancing the ventilation efficiency and the ability of the device (100) to trap solid and water particles. Figure 6c features the circumferential fin sets (106) arranged in an 'E' configuration, spaced evenly along the circumference of the fin cylinder (105). Figure 6d features the circumferential fin sets (106) in a curved vaneInternal Ref: OR25C090PCT03 shape, which guides the air smoothly around the fin cylinder (105) and can potentially contribute to the reduction of operational noise while maintaining effective airflow. Figure 6e features a 'V' shaped circumferential fin sets (106) arrangement, which increases the surface area for particle capture and accelerates the air flow as the air moves through the fin cylinder (105). Figure 6f illustrates circumferential fin sets (106) coated with a damping material, that reduce the velocity of water particles. The feature can help in minimizing the ingress of moisture and ensuring the dryness of the air within the ventilated space. Example 2: Variations of the bottom ring, the funnel unit and the fin cylinder configurations for optimized airflow

[0062] Figures 7a-7j illustrate exemplary line diagrams showcasing various design adaptations of the bottom ring, the funnel unit and the fin cylinder for a roof ventilator device, in accordance with an embodiment of the invention. Each configuration depicts a unique approach of integrating the fin cylinder (105) with different shapes of the bottom ring (103) and the funnel unit (102) thereby influencing airflow dynamics, ventilation efficiency, and the effective expulsion of rainwater and solid particles from the device (100).

[0063] Figure 7a depicts a configuration featuring a straight bottom ring (103) affixed to the fin cylinder (105). In Figure 7b, an alternative design showcases a divergent bottom ring (103), where the cross-sectional area progressively expands from the base upward, aligning with the inner circumferential contour of the fin cylinder (105). Variations with a cylindrical shell having a flat or inclined bottom coupled to the bottom ring (103), enveloping the fin cylinder (105), are illustrated in Figure 7c and Figure 7d. The truncated fin cylinder (105) designs presented in Figure 7e and Figure 7f are implemented over straight and divergent bottom rings (103), respectively.Internal Ref: OR25C090PCT03

[0064] Moreover, Figure 7g -7j demonstrates a combination of a funnel unit (102) in the shape of a cylindrical shell. In Figures 7g and 7h, a truncated fin cylinder (105) is depicted atop a straight bottom ring (103) and a divergent bottom ring (103), respectively. Figure 7i depicts a configuration where the cylindrical shell funnel unit (102) having openings at both the top end and the bottom ends and is supported by the bottom ring (103). Figure 7j discloses an alternative method to maintain the axis of the device (100) always vertical with the bottom opening of the funnel unit (102) parallel to the roof, while the vertical axes of the fin cylinder (105) and the bottom ring (103) coincide with each other. The areas and resulting negative pressures in distinct sections of the bottom ring (103) play a pivotal role in determining the discharge rate, ensuring that the airflow at the bottom ring equates to that at the section exposed to the negative pressure zone. Example 3: Various configurations of circumferential fin sets’ arrangements based on axial orientation

[0065] Figures 8a-8d illustrate exemplary line diagrams of various sectional configurations of circumferential fin sets for a fin cylinder based on axial orientation, in accordance with an embodiment of the invention. The configurations demonstrate the versatility of placement of the circumferential fin sets (106), adapted to suit specific aerodynamic and filtration requirements. Whether arranged vertically, horizontally, or inclined, each design of the circumferential fin sets (106) serves to optimize airflow, enhance particle separation, and ensure effective ventilation performance. The consistent inclusion of a fin cover (107) across the configurations indicates a unified approach to protecting the internal mechanisms and maintaining the efficiency of the device (100).

[0066] Figure 8a features a vertical alignment of the fin columns along the periphery of the fin cylinder. The circumferential fin sets (106) are positioned sequentially, encircling the fin cylinder (105). Figures 8b features a horizontal alignment of the fin columns (108) placed layered atop one another around the periphery of the fin cylinder (105). Figures 8cInternal Ref: OR25C090PCT03 features an inclined alignment of the fin columns (108), arranged vertically in a consecutive manner along the outer edge of the fin cylinder (105). Figures 8d features an arrangement where fin columns (108) are mounted horizontally in an ascending, inclined sequence.

[0067] Each of the configurations illustrates different methods of arranging the fin columns (108) to influence airflow and particle filtration, with the fin cover (107) serving as a protective and functional component of the device (100). Example 4: Bird deterrent feature for roof ventilator device

[0068] Figure 9 illustrates an exemplary design modification for a roof ventilator device aimed at preventing birds from perching on exposed components, in accordance with an embodiment of the invention. The design incorporates a series of protruding elements, resembling nails or sharp needles, strategically placed along the top edge of the funnel unit (102) and across the fin cover (107). The deterrent mechanism is crucial for maintaining uninterrupted operation by avoiding the obstructions that can result from birds settling on the device (100). The pointed features are designed to be added as detachable elements or integrated directly into the device (100), providing flexibility in the application and ensuring the device (100) remains free from avian interference.

[0069] Table 1 illustrates a comparative analysis of discharge rates for different roof ventilator types at a wind velocity of 3 m / sec, in accordance with an embodiment of the invention. The data reveals that static roof vents have a discharge rate ranging from 0.04 to 0.05 m³ / sec, while turbo roof vents show an improvement at 0.065 to 0.070 m³ / sec. The proposed invention outperforms both with a notable discharge rate of 0.11 to 0.155 m³ / sec, indicating a significant advancement in ventilation efficiency.

[0070] The present invention offers a multitude of advantages over conventional roof ventilator designs. The incorporation of the fin cylinder (105) centrally positioned over theInternal Ref: OR25C090PCT03 bottom ring (103), featuring a circumferential fin set (106) and a fin cover (107), optimizes aerodynamic efficiency. The configuration minimizes air resistance, ensuring a smooth and efficient flow of air. The device (100) demonstrates superior performance under both low and high wind conditions, providing a multifold discharge rate than traditional turbo vents. The adaptability ensures consistent ventilation even in fluctuating environmental scenarios. The roof ventilator device (100) includes a mesh cover (111) safeguarding the funnel unit (102) from the ingress of solid particles, preserving the longevity of the device (100) and breaks down rainwater particles into fine droplets, mitigating potential damage and ensuring sustained functionality. The roof ventilator device (100) addresses longstanding challenges associated with discharge rates, noise generation, and protection against external elements, offering a holistic solution, contributing to improved indoor air quality, zero energy consumption, and maintenance free prolonged device (100) life. Reference numbers Components Reference Numbers Device 100 Outer shell 101 Funnel unit 102 Bottom ring 103 Drain hole 104 Fin cylinder105Circumferential fin set106Fin cover107Fin column108Fin support109Fin arm110Mesh Cover 111

Claims

Internal Ref: OR25C090PCT03 Claims I Claim:

1. A Venturi driven, fin protected roof ventilator device with high discharge rate and noise free operation, the device (100) comprising: a. an outer shell (101) designed for a roof installation, incorporating a funnel unit (102), a bottom ring (103) and a drain hole (104), wherein the bottom ring (103) is equipped with one or more fastening components and joints, providing robust structural support; and b. a fin cylinder (105), located within the outer shell (101), forming a fluid path for air circulation, wherein the fluid path induces negative pressure to facilitate air extraction.

2. The device (100) as claimed in claim 1, wherein the drain hole (104) is positioned beneath the funnel unit (102) for the purpose of efficient drainage of rainwater and solid particles, ensuring optimal functionality.

3. The device (100) as claimed in claim 1, wherein the fin cylinder (105) is centrally positioned over the bottom ring (103), configured with a plurality of circumferential fin sets (106) and capped by a fin cover (107), optimizing aerodynamic performance.

4. The device (100) as claimed in claim 1, wherein the fin cylinder (105) within the fluid path separate air from dust, dirt, rainwater, and foreign particles.

5. The device (100) as claimed in claim 1, wherein the device (100) is characterized by a multifold discharge rate under both low and high wind conditions.Internal Ref: OR25C090PCT03 6. The device (100) as claimed in claim 1, wherein the blowing wind over the funnel unit (102) creates a negative pressure within said funnel unit (102) via the Venturi effect, thereby drawing air from the indoor environment through the bottom ring (103) and the fin cylinder (105) to expel the indoor air to the exterior.

7. The device (100) as claimed in claim 1, wherein the funnel unit (102) is characterized as a divergent tube, that induces a sudden expansion of air within, resulting in an acceleration of airflow that enhances ventilation efficacy of the device (100).

8. The device (100) as claimed in claim 1, wherein the height of the fin cylinder (105) is maintained to be less than or equal to the level of the funnel unit (102), ensuring a compact and efficient design.

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