Generator air intake system

Abstract

The invention relates to an air intake system used in industrial generators and comprising an air intake pocket (20) located in a generator enclosure (10). The invention is characterized in that; it comprises a quarter-wave resonator (50) located in the air intake pocket (20), which directs, within the generator system, the flow of fresh air drawn into the system and / or hot air leaving the system, creating acoustic resonance at a certain frequency so as to ensure suppressing unwanted frequencies and reducing low-frequency noise, and a side air duct (60) forming the air passage in the air intake pocket (20) in the space between the air intake pocket (20) and the quarter-wave resonator (50).

Description

[0001] DESCRIPTION

[0002] GENERATOR AIR INTAKE SYSTEM

[0003] Technical Field

[0004] The invention relates to an air intake system used in industrial generators.

[0005] The invention particularly relates to an air intake system which reduces the effect of low frequency noise generated in the generator by means of a quarter-wave resonator and at the same time improves the overall acoustic performance.

[0006] State of the Art

[0007] Generators are machines that convert mechanical energy into electrical energy, usually consisting of an alternator and a motor, and are one of the most common and efficient ways of generating electrical energy. These machines are of critical importance especially in places where there is a power outage and are widely used in construction sites, hospitals, shopping malls, hotels, schools and sites. Generators are produced with or without an enclosure, depending on the area of use. Enclosed generators provide extra protection against external environmental factors, allowing the generator to be protected from harmful factors such as dust, mud, stones and rain.

[0008] Traditional noise reduction methods are generally effective at high frequencies and are insufficient in reducing noise at low frequencies. Environmental noise regulations require limiting such noise, creating serious compliance requirements for generator manufacturers and users.

[0009] In current applications, air intake pockets used in generators have the capacity to absorb sound at high frequencies, but are not effective at low frequencies. In addition, these systems are generally large and space-consuming structures, creating difficulties in applicability in limited areas. The large dimensions of the air intake pockets used in existing techniques cause limitations in the installation area of the generators and do not provide a compact layout. The methods used in existing systems offer limited performance in absorbing low frequency noise. This makes it difficult for users to comply with environmental noise regulations and increases operational costs. Therefore, in the state of the art, there is a need for a structure that provides an effective reduction of low-frequency noise in generators. Document number TR2010 / 09355 can be shown as an example of the known state of the art in the research conducted in the literature. This document is related to a generator enclosure and chassis group with a body shock absorber. The enclosure and chassis group basically comprise a fixed cover, a radiator cover positioned on the side where the radiator of the generator engine is located, connected to the fixed cover or subframe by means of fasteners, with a louver on the front surface that allows the heated air to be discharged, an alternator cover positioned on the side of the generator engine where the alternator is located, connected to the fixed cover or subframe by means of a connecting element, with air intake ducts positioned on the side surfaces, the inner surfaces of which being suitable for sound insulation. It is stated that in said enclosure and chassis group, the inner surfaces of the air intake channels are designed to be suitable for sound insulation in order to isolate the noise within these air intake channels. However, it is not possible to effectively reduce low-frequency noise, especially in generators, with air intake ducts.

[0010] As a result, the above said drawbacks and the inadequacy of the prior art solutions about the subject have necessitated an improvement in the related technical field.

[0011] Purpose of the Invention

[0012] The present invention relates to a generator air intake system that eliminates the above-mentioned disadvantages and brings new advantages to the relevant technical field.

[0013] The main purpose of the invention is to present an air intake system that, based on the principle of acoustic resonance, resonates at a certain frequency and absorbs acoustic energy during this resonance, allowing low-frequency noise to be effectively damped, thus reducing the effect of low-frequency noise in the generator, thanks to the quarter-wave resonator.

[0014] The purpose of the invention is to provide an air intake system that significantly reduces the environmental noise level without adversely affecting the flow performance of the generator. Another purpose of the invention is to present an air intake system that enables effective placement of the quarter-wave resonator within the limited space of the generator thanks to its compact structure and enables noise reduction at low frequencies without making major changes to the current design of the generator.

[0015] Another purpose of the invention is to present an air intake system that not only reduces noise in the generator but also facilitates compliance with environmental regulations. Another purpose of the invention is to provide an air intake system in the generator with improved overall acoustic performance.

[0016] Another purpose of the invention is to provide an air intake system that saves space in the generator intake pockets and provides effective damping performance.

[0017] Another purpose of the invention is to present an air intake system that is not limited to large and industrial generators, but can also be used in generators of different sizes and offers an ideal solution for noise reduction, especially in mobile generators, with the compactness and efficiency provided by quarter wave resonators.

[0018] In order to fulfill all the above-mentioned purposes and all the purposes that may arise from the detailed description, the invention is an air intake system used in industrial generators and comprising an air intake pocket located in the generator enclosure, comprising a quarter-wave resonator located in the air intake pocket, which directs the flow of fresh air drawn into the system and / or hot air leaving the system in the generator system, creating acoustic resonance at a certain frequency, suppressing unwanted frequencies and reducing low-frequency noise, and a side air duct forming an air passage in the air intake pocket in the space between the air intake pocket and the quarter-wave resonator.

[0019] The structural and characteristic features of the invention and all of its advantages shall be understood better with the figures and the detailed description given below in reference to the figures. Therefore, the assessment should be made by taking into account said figures and detailed explanations.

[0020] Figures for Better Understanding of the Invention

[0021] Figure 1 : An overview of the air intake system according to the invention.

[0022] Figure 2: Top view of the air intake pocket section of the air intake system according to the invention.

[0023] Figure 3: Perspective view of the air intake pocket of the air intake system of the invention.

[0024] Explanation of Part References

[0025] 10. Generator enclosure

[0026] 20. Air intake pocket 30. Sand and water-trapping air intake louver

[0027] 40. Sound insulation material

[0028] 50. Quarter-wave resonator

[0029] 51 . Rear edge

[0030] 52. Rear side edge

[0031] 53. Front edge

[0032] 54. Front angled edge

[0033] 55. Front side edge

[0034] 56. Resonator air inlet

[0035] 57. Middle plate

[0036] 60. Side air duct

[0037] 70. Side insulation 80. Rear insulation

[0038] Detailed Description of the Invention

[0039] In this detailed description, the preferred alternatives of the air intake system which is the subject of the invention are explained only for the purpose of better understanding the subject and in a way that does not create any limiting effect.

[0040] Figure 1 shows the general view of the disassembled state of the air intake system which is the subject of the invention. Accordingly, the air intake system in its most basic form, comprises an air intake pocket (20) located inside the generator enclosure (10), a sand and water-trapping air intake louver (30), which is covered onto the front surface of the air intake pocket (20), a sound insulation material (40) located on the sand and water-trapping air intake louver (30), a quarter-wave resonator (50) located in the air intake pocket (20), a side air duct (60) forming an air passage in the air intake pocket (20) in the space between the air intake pocket (20) and the quarter-wave resonator (50), a side insulation (70) located on the opposite inner side surfaces within the air intake pocket (20), and a rear insulation (80) located on the rear surface of the air intake pocket (20).

[0041] In the air intake system according to the present invention, an air intake pocket (20) is found inside the generator enclosure (10) which forms the main structure of the generator. Said air intake pocket (20) is the section that allows fresh air to enter the generator system. Fresh air entering through the air intake pocket (20) is drawn into the generator enclosure (10) and this air provides cooling of the generator.

[0042] The sand and water-trapping air intake louver (30) is covered onto the front surface of the air intake pocket (20). Said sand and water-trapping air intake louver (30) prevents external factors such as dust and rain from entering the generator system.

[0043] On the sand and water-trapping air intake louver (30), a sound insulation material (40) is found for the isolation of high-frequency noise.

[0044] A quarter-wave resonator (50) is placed inside the air intake pocket (20) to reduce low frequency noise in the generator. The quarter-wave resonator (50), as shown in figure 2, consists of a straight-formed rear edge (51 ) forming the rear side of the quarter-wave resonator (50), a rear side edge (52) extending perpendicularly from both sides of the rear edge (51 ) and optimizing the amount of air entering, a front edge (53) forming the front side of the quarter-wave resonator (50) and optimizing airflow, an anterior angled edge (54) extending laterally at an angle from both sides of the front edge (53) and directing the sound waves, a front side edge (55) extending perpendicularly from the front angled edges (54) and determining the operating frequency, a resonator air inlet (56) forming the gap between the rear side edge (52) and the front side edge (55) and providing air intake into the quarter-wave resonator (50), and a middle plate (57) located perpendicularly between the rear edge (51 ) and the front edge (53), optimizing the operating frequency of the quarter-wave resonator (50).

[0045] Fresh air, which is drawn into the air intake pocket (20) from the sand and water-trapping air intake louver (30) and enters the air intake pocket (20) through the side air duct (60) that forms the air passage in the space between the air intake pocket (20) and the quarter-wave resonator (50), enters the quarter-wave resonator (50) from the resonator air inlet (56). The quarter-wave resonator (50) directs the air flow through its structural form and creates acoustic resonance at a certain frequency, thus suppressing unwanted frequencies and effectively reducing noise. The quarter-wave resonator (50) reduces low frequency noise by causing acoustic waves to resonate at a specific wavelength.

[0046] The quarter-wave resonator (50) reduces the effect of low frequency noise in generator systems and improves the overall acoustic performance of the fresh air intake system.

[0047] By making dimensional changes to the elements that make up the quarter-wave resonator (50), the generator enclosure (10) can be optimized according to the operating regime at the desired frequencies. When the length of the quarter-wave resonator (50) is increased, it becomes possible to operate at lower frequencies. This is because the total length of the quarter-wave resonator (50) is directly related to one quarter of the wavelength of the sound wave. Accordingly, extending the length of the quarter-wave resonator (50) ensures that resonance occurs at lower frequencies. Optimization studies to improve low frequency performance in a limited space are performed by changing the size of each part of the quarter-wave resonator (50) and optimizing it according to the engine ignition drive, alternator and radiator frequencies in the generator enclosure (10) to provide high performance.

[0048] The side air channels (60) and the resonator air inlets (56) that form the air passage in the space between the air intake pocket (20) and the quarter-wave resonator (50) are important in directing the sound waves and air flow. The width and length of the side air ducts (60) and the resonator air inlets (56) are critical elements in both optimizing frequency and balancing pressure loss. For example, when the side air ducts (60) are enlarged, air flow occurs more freely, which supports operation at lower air flow rates. In this way, the vacuuming effect is reduced and water ingress into the generator enclosure (10) is controlled.

[0049] While the dimensional changes made to the quarter-wave resonator (50) ensure that the quarter-wave resonator (50) operates efficiently within a certain frequency range, each change made to the dimensions of the quarter-wave resonator (50) can be optimized in line with the low frequency operating targets and frequency control can be achieved precisely.

[0050] While air is drawn into the generator enclosure (10) from the sand and water-trapping air intake louver (30) on the front surface of the air intake pocket (20), unwanted substances are retained by the sand and water-trapping air intake louver (30) and the generator enclosure (10) is protected against pollutants that may come from the outside environment, thus increasing the long-term efficiency of the system.

[0051] The side insulation (70) located on the opposite inner side surfaces within the air intake pocket (20) and the rear insulation (80) located on the rear surface of the air intake pocket (20) provide the reduction of high frequency noise.

[0052] In the air intake system according to the invention, fresh air is drawn into the generator enclosure (10) through the air intake pocket (20) and this air provides cooling of the generator. After the fresh air enters the generator enclosure (10), the low frequency sound waves emitted from the generator are reduced by the quarter-wave resonator (50) and thus the dominant frequencies are kept under control in a limited area. High frequency sound waves are absorbed and controlled by the sound insulation material (40) located on the sand and water-trapping air intake louver (30). In the final stage, the air trying to escape from the system is regulated via the air intake shutter with sand and water-trapping air intake louver (30). The sand and water-trapping air intake louver (30) not only directs the air outlet to the generator system, but also regulates the air flow rate, allows for the optimization of pressure loss and prevents environmental factors such as dust and rain from entering the generator system.

[0053] The quarter-wave resonator (50) used in the fresh air intake system in the generator enclosure (10) can also be used in the hot air discharge system in the generator enclosure (10) in an alternative embodiment of the invention. Thus, the low frequency noise can be reduced by directing the flow of fresh air drawn into the system in the fresh air intake system of the generator and / or the hot air coming out of the system in the hot air discharge system of the generator using a quarter-wave resonator (50).

Claims

CLAIMS1. An air intake system used in industrial generators, comprising an air intake pocket (20) located in the generator enclosure (10), characterized in that; it comprises a quarter-wave resonator (50) located in the air intake pocket (20), which directs, within the generator system, the flow of fresh air drawn into the system and / or hot air leaving the system, creating acoustic resonance at a certain frequency so as to ensure suppressing unwanted frequencies and reducing low-frequency noise, and a side air duct (60) forming the air passage in the air intake pocket (20) in the space between the air intake pocket (20) and the quarter-wave resonator (50).

2. An air intake system according to Claim 1 , characterized in that; it comprises a straight-formed rear edge (51 ) forming the rear side of said quarter-wave resonator(50), a rear side edge (52) extending perpendicularly from both sides of the rear edge(51 ) and optimizing the amount of air entering, a front edge (53) forming the front side of the quarter-wave resonator (50) and optimizing airflow, an anterior angled edge (54) extending laterally at an angle from both sides of the front edge (53) and directing the sound waves, a front side edge (55) extending perpendicularly from the front angled edges (54) and determining the operating frequency, a resonator air inlet (56) forming the gap between the rear side edge (52) and the front side edge (55) and providing air intake into the quarter-wave resonator (50), and a middle plate (57) located perpendicularly between the rear edge (51 ) and the front edge (53), optimizing the operating frequency of the quarter-wave resonator (50).

3. An air intake system according to Claim 1 , characterized in that; said air intake pocket (20) comprises a side insulation (70) located on opposite inner side surfaces within the air intake pocket, which reduces high-frequency noise.

4. An air intake system according to Claim 1 , characterized in that; said air intake pocket (20) comprises a rear insulation (80) located on the rear surface thereof, which ensures the reduction of high-frequency noise.

5. An air intake system according to Claim 1 , characterized in that; said air intake pocket (20) comprises a sand and water-trapping air intake louver (30), which is covered onto the front surface thereof and prevents external factors from entering the generator system.

6. An air intake system according to Claim 5, characterized in that; it comprises a sound insulation material (40) located on said sand and water-trapping air intake louver (30), which ensures insulation of high-frequency noises in the generator system.

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