Air inlet waterproof and noise reduction louver and louver window for generator set

Abstract

The utility model relates to a kind of air inlet waterproof noise reduction louvers and louver for generator set, including first, second, third bending piece, first bending piece includes first flat plate and the first, second bending part of V-shaped located at the both ends of first flat plate, second bending piece includes second flat plate, one end of second flat plate has third bending part and is welded in first bending part, the other end of second flat plate is welded in second bending part;One end of third bending piece is welded in first flat plate, the other end of third bending piece is protruding in first flat plate.A kind of air inlet waterproof noise reduction louvers and louver for generator set using the utility model design, can solve the problem that the air inlet of container type generator set is directly connected to the outside, the noise formed by generator set can be coupled to far field along air passage, bring environmental pollution problem;At the same time, high flow rate suction is easy to carry raindrop under rainfall condition, leading to the problem of local waterlogging in container, insulation performance decline, corrosion risk increase.

Description

Technical Field

[0001] This utility model relates to the field of generator set technology, specifically to a waterproof and noise-reducing louver for generator sets. Background Technology

[0002] Containerized generator sets rely on a large volume of fresh air supplied from the air intake side to achieve convective cooling of the generator and heat dissipation system during operation. The air intake is usually directly connected to the outside, forming a noise "straight channel" where noise can be coupled and propagated to the far field. At the same time, the high-velocity intake can easily carry raindrops in rainy conditions, leading to local water accumulation inside the container, decreased insulation performance, and increased risk of corrosion.

[0003] Therefore, existing technologies have shortcomings and need to be improved and developed. Utility Model Content

[0004] The utility model provides a waterproof and noise-reducing louver for a generator set, which solves the problem that in the prior art, the air inlet of a containerized generator set is directly open to the outside, and the noise generated by the generator set can be coupled and propagated to the far field along the air duct, causing environmental pollution; at the same time, the high flow rate intake is prone to carrying raindrops under rain conditions, resulting in local water accumulation inside the container, reduced insulation performance, and increased corrosion risk.

[0005] In a first aspect, this utility model provides a waterproof and noise-reducing air inlet louver for a generator set, comprising a first bending member and a second bending member forming the louver. The first bending member includes a first flat plate and a first bending portion and a second bending portion located at both ends of the first flat plate and forming a V-shape. The second bending member includes a second flat plate, one end of which has a third bending portion and is welded to the first bending portion, and the other end of which is welded to the second bending portion. The louver also includes a third bending member, one end of which is welded to the first flat plate near the first bending portion, and the other end of which protrudes from the first flat plate.

[0006] Furthermore, the first bending member is a steel plate, and the second bending member is a galvanized perforated plate.

[0007] Furthermore, the space formed by the first bent piece and the second bent piece is filled with fireproof and sound-absorbing cotton.

[0008] Furthermore, the first plate is parallel to the second plate.

[0009] A second aspect of this utility model provides a waterproof and noise-reducing louver for a generator set, installed on the uprights of a container. The louver includes a window frame and a plurality of louvers, which are welded to the window frame. The lowermost point of the upper louver and the uppermost point of the lower louver are on the same horizontal line. Each louver has a first flat plate on top of a second flat plate, with the first flat plate facing outwards from the container and the second flat plate facing inwards. The angle between the end of the first flat plate near the first bend and the horizontal plane is acute, and the angle between the third bend of each louver protruding from the end of the first flat plate and the horizontal plane is right-angled.

[0010] Furthermore, the angle between the end of the first flat plate near the first bend and the horizontal plane is greater than 50 degrees.

[0011] Furthermore, a fourth bending member is welded to the outer contour of the window frame. The fourth bending member includes a fourth bending portion and a fifth bending portion that are perpendicular to each other. The fourth bending portion is welded to the outer contour of the window frame, and the fifth bending portion has a threaded hole.

[0012] Furthermore, a gasket is affixed to the side of the fifth bend facing the container.

[0013] Furthermore, the gasket is an EPDM gasket.

[0014] Beneficial effects:

[0015] As can be seen from the above technical solutions, this utility model provides a waterproof and noise-reducing louver for generator sets, which has the following beneficial effects:

[0016] 1. Noise Reduction Achieved: During generator operation, mechanical and aerodynamic noise propagates directly to the outside through the air intake channel. In this embodiment, a closed cavity is formed by the first and second bent components, filled with fire-resistant and sound-absorbing cotton. Simultaneously, the galvanized perforated plate characteristics of the second bent component allow sound waves to dissipate through friction with the fibers after entering the porous structure. The parallel arrangement of the first and second flat plates and the upright edge of the third bent component together constitute a deflection path, extending the sound wave propagation path and increasing the number of reflections. Sound wave energy is attenuated multiple times within the channel, increasing the insertion loss of noise in the mid-to-high frequency range and reducing overall external radiated noise, thereby meeting the environmental noise control requirements of the containerized generator set.

[0017] 2. Waterproofing Achieved: When the generator set operates at high airflow, the airflow velocity at the air inlet is high. If rainfall occurs, raindrops can easily enter the interior with the airflow, leading to water accumulation and equipment damage. This embodiment addresses this by arranging the first flat plate outwards at an acute angle to the horizontal plane, creating a coverage area in the windward direction; the third bent component, with a right-angle protrusion, acts as a barrier to prevent raindrops from entering the container's inertial path. Raindrops are blocked or deflected by inertia and gravity and discharged along the plate surface, making it difficult for them to enter the interior with the airflow. Even under rainfall conditions with high wind speeds at the air inlet surface, most raindrops are still intercepted or guided by the outer structure, reducing the probability of rainwater intrusion into the container and improving the operational safety of electrical equipment.

[0018] 3. Ensuring generator set stability: Generator set cooling requires a large volume of airflow. If the resistance of the louver structure is too high, it will lead to a decrease in the unit's heat dissipation efficiency or even operational failure. In this embodiment, the first and second flat plates are arranged parallel to each other. Between adjacent louvers, the bottom edge of the upper louver and the top edge of the lower louver are on the same horizontal line, and the spacing between the louvers is reasonably set to avoid excessive airflow obstruction. The second bending component uses a perforated plate with a high open area ratio, which provides a sound absorption channel and reduces wind resistance. The density of the sound-absorbing cotton is controlled within a suitable range, which can absorb sound without causing excessive airflow loss. This ensures that under stable inlet surface wind speed conditions, the inlet air pressure drop can also be maintained within a reasonable range, ensuring the unit's cooling airflow and not affecting the stable operation of the generator set.

[0019] 4. Achieving a sealed louver: The air-intake louvers must be securely installed to the container pillars, preventing air and noise leakage at the installation boundaries. A fourth and fifth bend are installed on the outer contour of the window frame, with threaded holes in the fifth bend for easy bolt fixing; an EPDM gasket is attached to the inside of the fifth bend, achieving sealing and shock absorption through elastic compression. The louvers can be quickly bolted onto the container, with a stable structure and a good seal at the joints, preventing noise and airflow leakage and ensuring the integrity of overall noise reduction and waterproof performance.

[0020] 5. Enhanced Safety: Long-term operation of generator sets requires air intake devices to be fireproof, weather-resistant, and maintainable to avoid potential safety hazards. The fireproof and sound-absorbing cotton filling the louvers meets flame-retardant standards, preventing secondary risks under high-temperature conditions or electrical faults within the unit; the galvanized perforated plate supports and protects the sound-absorbing material, preventing it from falling off; the EPDM gasket is ozone-resistant and resistant to high and low temperatures, maintaining a long-term seal; the louvers provide long-term stable fireproof and protective capabilities during operation, reducing maintenance costs and improving the overall reliability of the generator set.

[0021] It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below can be considered part of the inventive subject matter of this disclosure, provided that such concepts do not contradict each other.

[0022] The foregoing and other aspects, embodiments, and features of the teachings of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the invention, such as features and / or beneficial effects of exemplary embodiments, will become apparent from the following description or may be learned through practice of specific embodiments according to the teachings of the present invention. Attached Figure Description

[0023] The accompanying drawings are not drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0024] Figure 1 This is a cross-sectional view of the structure of a waterproof and noise-reducing air inlet louver for a generator set according to an embodiment of this application.

[0025] Figure 2 This is a structural cross-sectional view of a generator set air inlet waterproof and noise-reducing louver in an embodiment of this application.

[0026] Figure 3 This is a front view of a generator set air inlet waterproof and noise reduction louver according to an embodiment of this application.

[0027] Figure 4 As in the embodiments of this application Figure 2 Enlarged view of point A.

[0028] Explanation of icon numbers:

[0029] 1. First bending component; 2. Second bending component; 3. Fireproof and sound-absorbing cotton; 4. Third bending component; 5. Window frame; 6. Fourth bending component; 7. Gasket. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this invention pertains.

[0031] The terms "first," "second," and similar words used in the specification and claims of this patent application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "an," "a," or "the," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the features, integrals, steps, operations, elements, and / or components listed following "comprising" or "including," and do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets thereof. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0032] Containerized generator sets rely on a large volume of fresh air supplied from the air intake side to achieve convective cooling of the generator and heat dissipation system during operation. The air intake is usually directly connected to the outside, forming a noise "straight channel" where noise can be coupled and propagated to the far field. At the same time, the high-velocity intake can easily carry raindrops in rainy conditions, leading to local water accumulation inside the container, decreased insulation performance, and increased risk of corrosion.

[0033] In view of this, this utility model embodiment provides a waterproof and noise-reducing louver for generator sets, referring to... Figure 1 The device includes a first bending member 1 and a second bending member 2 that are joined together to form a louver. The first bending member 1 includes a first flat plate and a first bending portion and a second bending portion located at both ends of the first flat plate and forming a V-shape. The second bending member 2 includes a second flat plate, one end of which has a third bending portion and is welded to the first bending portion, and the other end of which is welded to the second bending portion. It also includes a third bending member 4, one end of which is welded to the first flat plate near the first bending portion, and the other end of which protrudes from the first flat plate. In some embodiments, the first bending member 1 is a steel plate, and the second bending member 2 is a galvanized perforated plate.

[0034] The first bending component 1 is integrally bent from a first flat plate and its two V-shaped first and second bending portions at both ends. The preferred material is Q235 or stainless steel plate. The second bending component 2 is a galvanized perforated plate. One end of the second flat plate has a third bending portion, which is welded and fixed to the first bending portion. The other end is welded to the second bending portion to form an enclosed cavity. The opening ratio of the galvanized perforated plate can be 25%~40%, and the aperture can be 2.0mm~5.0mm. When the airflow demand increases, the opening ratio can be appropriately increased. The third bending component 4 has a vertical protruding edge. One end is welded to the first flat plate near the first bending portion, and the other end protrudes relative to the first flat plate. When installed in the window frame 5, the protruding section is perpendicular to the horizontal plane, and the height can be set according to the actual container. The louver cavity is filled with fireproof and sound-absorbing cotton 3, which can be made of fiberglass, basalt fiber, or flame-retardant polyester fiber, with a fire resistance rating of not less than B1. By cooperating with the first bending component 1, the second bending component 2, and the third bending component 4, a louver with air intake, waterproofing, and noise reduction functions is constructed. The first flat plate faces the air intake side, blocking rainwater and allowing it to slide down naturally under gravity without affecting air intake. The second flat plate faces the inside of the container, absorbing the noise generated by the generator set inside the container. The noise undergoes a sudden change in acoustic impedance after passing through the inner cavity of the louver, is reflected multiple times, and dissipates energy through the fireproof sound-absorbing cotton 3.

[0035] In some embodiments, the space enclosed by the first bent member 1 and the second bent member 2 is filled with fireproof sound-absorbing cotton 3, which dissipates sound energy through friction and improves the sound absorption effect by matching the mesh. The outer steel plate is a reflective interface, and the inner galvanized mesh plate and the fireproof sound-absorbing cotton 3 constitute a resistive sound absorption system. Sound waves enter the pores of the fireproof sound-absorbing cotton 3 through the mesh and are dissipated by viscosity. The fireproof sound-absorbing cotton 3 forms a noise propagation path within the louvers, increasing the equivalent propagation length and the number of reflections. The direct sound energy is dispersed and attenuated, thereby improving the insertion loss in the mid-to-high frequency range.

[0036] In some embodiments, the first plate is parallel to the second plate. The first and second plates are parallel to each other, forming equally spaced parallel channels when installed in the window frame 5, which facilitates airflow rectification and sound wave reflection. The parallel channels extend the propagation path and suppress direct sound, reducing additional noise and pressure drop caused by eddies.

[0037] This utility model embodiment also provides a waterproof and noise-reducing louver for generator sets, installed on the uprights of a container. The waterproof and noise-reducing louver for generator sets is described in reference to... Figures 2-3The container includes a window frame 5 and several louvers. The louvers are welded inside the window frame 5. Among adjacent louvers, the bottom edge of the upper louver and the top edge of the lower louver are on the same horizontal line. The first plate of each louver is located on top of a second plate, with the first plate facing outwards and the second plate facing inwards. The angle between the end of the first plate near the first bend and the horizontal plane is acute. The angle between the third bend 4 of each louver protruding from the end of the first plate and the horizontal plane is right-angled. In some embodiments, the angle between the end of the first plate near the first bend and the horizontal plane is greater than 50 degrees.

[0038] The window frame 5 is a rectangular frame with an L-shaped fourth bend 6 welded to its outer contour. This bend includes a fourth bend and a fifth bend that are perpendicular to each other. The fifth bend has a universal threaded hole. An EPDM gasket is attached to the inside of the fifth bend. Several louvers are welded parallel and equidistantly inside the window frame 5. The installation direction is with the first flat plate on top and facing outwards, and the second flat plate on the bottom and facing inwards, establishing a division of labor for rain protection above and sound absorption below. The first flat plate has an acute angle with the horizontal plane near the first bend, preferably 50°~70°, forming a boundary layer and guiding airflow along the plate surface. When raindrops are drawn towards the inlet by the airflow, due to geometric shielding and flow deflection, most raindrop momentum is reduced, and they collide and separate at the third bend 4. Larger raindrops are discharged along the plate surface under gravity. The protruding end of the third bend 4 has a 90° angle with the horizontal plane, and the right-angled vertical edge forms a gravity confluence surface and a secondary baffle. Figure 1 The cross-section of the louver is shown. When facing the cross-section, the louver extends longitudinally to connect the two ends of the window frame 5. The two sides of the louver facing the window frame 5 can be sealed with steel plates, or they can be directly welded to the window frame 5 using the first plate and the second plate without steel plates.

[0039] In some embodiments, reference is made to Figure 4 A fourth bending member 6 is welded to the outer contour of the window frame 5. The fourth bending member 6 includes a fourth bending part and a fifth bending part that are perpendicular to each other. The fourth bending part is welded to the outer contour of the window frame 5, and the fifth bending part has a threaded hole.

[0040] The louvers are designed to be detachably connected to the container, facilitating future maintenance and reducing maintenance and replacement costs. In some embodiments, referring to existing technologies, the louvers can be designed to be detachably connected to the window frame 5, further improving maintenance convenience and thus reducing maintenance and replacement costs.

[0041] In some embodiments, a gasket 7 is adhered to the side of the fifth bend facing the container. In some embodiments, the gasket 7 is an EPDM gasket. EPDM gaskets have stable elastic modulus and resilience in outdoor environments, enabling them to maintain a long-term seal. The EPDM gasket is attached using self-adhesive or structural adhesive and forms a circumferential seal after the bolts are pre-tightened. During later maintenance, the EPDM gasket can be replaced at any time to maintain its elastic sealing performance.

[0042] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A waterproof and noise-reducing louver for a generator set, characterized in that, The device includes a first bending member and a second bending member that are joined together to form the louver. The first bending member includes a first flat plate and a first bending portion and a second bending portion that are V-shaped and located at both ends of the first flat plate. The second bending member includes a second flat plate, one end of which has a third bending portion and is welded to the first bending portion, and the other end of which is welded to the second bending portion. The device also includes a third bending member, one end of which is welded to the first flat plate near the first bending portion, and the other end of which protrudes from the first flat plate.

2. The air inlet waterproof and noise-reducing louver for a generator set according to claim 1, characterized in that, The first bending component is a steel plate, and the second bending component is a galvanized perforated plate.

3. The air inlet waterproof and noise-reducing louver for a generator set according to claim 2, characterized in that, The space formed by the first bent piece and the second bent piece is filled with fireproof and sound-absorbing cotton.

4. The air inlet waterproof and noise-reducing louver for a generator set according to claim 3, characterized in that, The first plate is parallel to the second plate.

5. A type of waterproof and noise-reducing louver for generator sets, installed on the uprights of a container, characterized in that... The container includes a window frame and several louvers, which are welded to the window frame. The bottom edge of the upper louver and the top edge of the lower louver are on the same horizontal line. The first plate of each louver is located on a second plate, with the first plate facing outwards and the second plate facing inwards. The angle between the end of the first plate near the first bend and the horizontal plane is acute, and the angle between the third bend of each louver protruding from the end of the first plate and the horizontal plane is right.

6. A waterproof and noise-reducing louver for a generator set according to claim 5, characterized in that, The angle between the end of the first flat plate near the first bend and the horizontal plane is greater than 50 degrees.

7. A waterproof and noise-reducing louver for a generator set according to claim 6, characterized in that, A fourth bending member is welded to the outer contour of the window frame. The fourth bending member includes a fourth bending portion and a fifth bending portion that are perpendicular to each other. The fourth bending portion is welded to the outer contour of the window frame, and the fifth bending portion has a threaded hole.

8. A waterproof and noise-reducing louver for a generator set according to claim 7, characterized in that, A gasket is affixed to the side of the fifth bend facing the container.

9. A waterproof and noise-reducing louver for a generator set according to claim 8, characterized in that, The gasket is an EPDM gasket.

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