WO2024009256A1

WO2024009256A1 - An air filter multi frequency resonator

Info

Publication number: WO2024009256A1
Application number: PCT/IB2023/056995
Authority: WO
Inventors: Imran Mulla; Aniket Ingole; Arvind Dhule
Original assignee: Classic Legends Pvt Ltd
Priority date: 2022-07-06
Filing date: 2023-07-06
Publication date: 2024-01-11

Abstract

The present disclosure discloses an air filter multi frequency resonator (100) of a vehicle comprising a housing (10) having an air inlet (12) and an air outlet (14) for flow of air therethrough. A filter (20) is configured to be attached proximal to the air inlet (12) for filtering intake atmospheric air. A resonator plate (30) is configured to be attached between an oppositely positioned pair of sidewalls of the housing (10). A plurality of holes (40a, 40b, 40c, 40d) is configured on the resonator plate (30) for passage of the intake air therethrough. A resonant chamber section (50) is defined by the resonator plate (30) and the oppositely positioned internal sidewalls of the housing (10). The resonant chamber (50) is located between the filter (20) and the air outlet (14), for reducing airborne noise having different frequencies.

Description

AN AIR FILTER MULTI FREQUENCY RESONATOR

FIELD

The present disclosure relates to noise reduction systems used in vehicles.

BACKGROUND

The background information herein below relates to the present disclosure but is not necessarily prior art.

Noise reduction systems used in air fdter multi frequency resonator of an automobile aim to reduce airborne noise, as the airborne noise has the potential to reduce the hearing capability of persons. Conventionally used air fdter assemblies incorporate Helmholtz resonators which are effective in reducing acoustic vibrations caused due to a particular frequency. When it is desired to reduce acoustic vibrations caused due to a range of frequencies, the conventional air fdters necessitate multiple resonators as vibrations arising from each frequency have to be reduced. This burdens the packaging constraints as well as increases cost of the air fdter multi frequency resonator.

There is, therefore, felt a need of an air fdter multi frequency resonator, that alleviates the above-mentioned drawbacks.

OBJECTS

Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:

An object of the present disclosure is to provide an air fdter multi frequency resonator that reduces airborne noise occurring due to a range of frequencies.

Another object of the present disclosure is to provide an air fdter multi frequency resonator that reduces the packaging space requirement.

Still another object of the present disclosure is to provide an air fdter multi frequency resonator that reduces harshness of the sound emitted from the air fdter. Yet another object of the present disclosure is to provide an air fdter multi frequency resonator that offers compactness and simplicity of construction.

Other objects and advantages of the present disclosure will be more apparent from the following description, which is not intended to limit the scope of the present disclosure.

SUMMARY

The present disclosure discloses an air filter multi frequency resonator comprising a housing having an air inlet and an air outlet for flow of air therethrough. A filter is configured to be attached proximal to the air inlet for filtering intake atmospheric air. A resonator plate is configured to be attached between an oppositely positioned pair of sidewalls of the housing. A plurality of holes is configured on the resonator plate for passage of the intake air therethrough. A resonant chamber section is defined by the resonator plate and the oppositely positioned internal sidewalls of the housing. The resonant chamber is located between the filter and the air outlet, for reducing airborne noise having different frequencies.

In an embodiment, the dimensions of each of the holes are different.

In another embodiment, the resonant chamber section and the air outlet are oppositely positioned to each other.

In a preferred embodiment, the air outlet is in fluid communication with the air intake manifold of an engine (not shown in figures).

In yet another embodiment, the engine is configured to drive a two-wheeled vehicle selected from the group consisting of a motorcycle, a motorscooter, a moped and bike.

In yet another embodiment, the construction of the resonator plate having the plurality of holes is varied by changing the location of the plurality of holes with respect to the dimensions of the resonator plate as per the packaging requirement.

In a preferred embodiment, a plurality of mounting bosses is provided on the resonator plate for attaching the resonator plate to the oppositely positioned internal sidewalls of the housing. In a preferred embodiment, mounting means (not shown in any figures) are provided on the internal sidewalls of the housing for attaching the resonator plate thereto.

In another embodiment, fasteners are used to connect the plurality of mounting bosses and the mounting means.

In a preferred embodiment, the interface between the resonator plate and the oppositely positioned internal sidewalls of the housing is sealed by a sealant.

LIST OF REFERENCE NUMERALS USED IN DETAILED DESCRIPTION AND DRAWING

10 - housing

12 - air inlet

14 - air outlet

20 - filter

30 - resonator plate

40a, 40b, 40c, 40d - hole

50 - resonant chamber section

60 - mounting boss

70 - sealant

80 - fastener

100 - air filter multi frequency resonator

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING

An air filter multi frequency resonator, of the present disclosure will now be described with the help of the accompanying drawing, in which:

Figure 1 shows a sectional view of the air filter multi frequency resonator, in accordance with an embodiment of the present disclosure;

Figure 2 shows a side view of the Figure 1; Figure 3 shows another sectional view of the air filter multi frequency resonator with the air flow path;

Figure 4 shows a front view of the resonator plate; and

Figure 5 shows another sectional view of the air filter multi frequency resonator with a sealant between the resonator plate and the internal sidewalls of the housing.

DETAILED DESCRIPTION OF THE PRESENT DISCLOSURE

Embodiments, of the present disclosure, will now be described with reference to the accompanying drawing.

Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present disclosure. In some embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.

The terminology used, in the present disclosure, is only for the purpose of explaining a particular embodiment and such terminology shall not be considered to limit the scope of the present disclosure. As used in the present disclosure, the forms "a,” "an," and "the" may be intended to include the plural forms as well, unless the context clearly suggests otherwise. The terms "comprises," "comprising," “including,” and “having,” are open ended transitional phrases and therefore specify the presence of stated features, integers, steps, operations, elements, modules, units and/or components, but do not forbid the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

When an element is referred to as being "mounted on", “engaged to”, “connected to”, or “coupled to” another element, it may be directly on, engaged, connected or coupled to the other element. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed elements.

Terms such as “inner,” “outer,” "beneath," "below," "lower," "above," "upper," and the like, may be used in the present disclosure to describe relationships between different elements as depicted from the figures.

Referring to the Figures 1-5, an air filter multi frequency resonator 100 of a vehicle is described. The air filter multi frequency resonator 100 comprises a housing 10 having an air inlet 12 and an air outlet 14 for flow of air therethrough. The housing 10 has internal side walls. In an embodiment, the air inlet 12 and the air outlet 14 are located opposite to each other. The air inlet 12 receives atmoshpheric air. A filter 20 is configured to be attached proximal to the air inlet 12 for filtering intake atmospheric air. The filter 20 facililitates removal of unwanted particles prior to supplying the air to the engine intake manifold not shown in any figures. A resonator plate 30 is configured to be attached between an oppositely positioned pair of sidewalls of the housing 10. A plurality of holes 40a, 40b, 40c, 40d configured on the resonator plate 30 for passage of the intake air therethrough. The air passes through the holes 40a, 40b, 40c, 40d and enters into a resonant chamber section 50 located towards an end of the housing 10. From the resonant chamber section 50, the air again passes through the plurality of holes 40a, 40b, 40c, 40d. Finally, the air leaves the air outlet 14 of the air filter multi frequency resonator 100. The frequency depends upon the diameter and the length of the plurality of holes 40a, 40b, 40c, 40d, and the volume in which the plurality of holes 40a, 40b, 40c, 40d open. So, the number of holes 40a, 40b, 40c, 40d of varying diameter will produce various frequencies and will help in cancelling out the detrimental high noise frequencies. The resonant chamber section 50 is defined by the resonator plate 30 and the oppositely positioned internal sidewalls of the housing 10. Along the passage of air flow in a direction from the air inlet 12 and the air outlet 14, the resonant chamber 50 is located between the filter 20 and the air outlet 14. The air filter multi frequency resonator 100 facilitates reducing airborne noise having different frequencies.

In another embodiment, the dimensions of each of the holes 40a, 40b, 40c, 40d are different.

In yet another embodiment, the resonant chamber section 50 and the air outlet 14 are oppositely positioned on the housing 10.

In another embodiment, the air outlet 14 is in fluid communication with the air intake manifold not shown in figures of an engine.

In an embodiment, the engine is configured to drive a two-wheeled vehicle selected from the group consisting of a motorcycle, a motorscooter, a moped and bike.

In an embodiment, the construction of the resonator plate 30 having the plurality of holes 40a, 40b, 40c, 40d is varied by changing the location of the plurality of holes 40a, 40b, 40c, 40d with respect to the dimensions of the resonator plate 30.

A plurality of mounting bosses 60 is provided on the resonator plate 30 for attaching the resonator plate 30 to the oppositely positioned internal sidewalls of the housing 50. Mounting means not shown in any figures are provided on the internal sidewalls of the housing 50 for attaching the resonator plate 30 thereto. The mounting means and the mounting bosses 60 are configured to be fastened together by fastening means 80. A sealant 70 is applied between the interface of the resonator plate 30 and the oppositely positioned internal side walls of the housing 10. The sealant facilitates preventing the air from leaking past the clearances between the resonator plate 30 and the oppositely positioned internal side walls of the housing 10. Frequency depends upon the diameter and the length of the plurality of holes 40a, 40b, 40c, 40d, and the volume in which the plurality of holes 40a, 40b, 40c, 40d open. So, the number of holes of varying diameter will produce various frequencies and will help in cancelling out high noise frequencies.

In an embodiment, the air fdter multi frequency resonator facilitates acoustic noise reduction of 2dBA.

In an embodiment, the air fdter multi frequency resonator facilitates acoustic noise reduction at frequencies as low as 50Hz.

In an embodiment, the air fdter multi frequency resonator facilitates acoustic noise reduction at higher frequencies in the range of 800Hz to 1000Hz.

The foregoing description of the embodiments has been provided for purposes of illustration and not intended to limit the scope of the present disclosure. Individual components of a particular embodiment are generally not limited to that particular embodiment, but, are interchangeable. Such variations are not to be regarded as a departure from the present disclosure, and all such modifications are considered to be within the scope of the present disclosure.

TECHNICAL ADVANCES AND ECONOMICAL SIGNIFICANCE

The present disclosure described herein above has several technical advantages including, but not limited to, the realization of an air filter multi frequency resonator, that:

• reduces airborne noise occurring due to a range of frequencies;

• offers simplicity of construction; and • ease of packaging of the air filter multi frequency resonator.

The foregoing description of the specific embodiments so fully reveals the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.

Throughout this specification the word “comprise”, or variations such as “comprises” or “comprising”, will be understood to imply the inclusion of a stated element, or step, or group of elements, or steps, but not the exclusion of any other element, or step, or group of elements, or steps.

The use of the expression “at least” or “at least one” suggests the use of one or more elements or ingredients or quantities, as the use may be in the embodiment of the disclosure to achieve one or more of the desired objects or results.

While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation.

Claims

CLAIMS:

1. An air filter multi frequency resonator (100) of a vehicle comprising:

• a housing (10) having an air inlet (12) and an air outlet (14) for flow of air therethrough;

• a filter (20) configured to be attached proximal to the air inlet (12) for filtering intake atmospheric air;

• a resonator plate (30) configured to be attached between an oppositely positioned pair of side walls of said housing (10);

• a plurality of holes (40a, 40b, 40c, 40d) configured on said resonator plate (30) for passage of the intake air therethrough;

• a resonant chamber section (50) defined by said resonator plate (30) and the oppositely positioned internal sidewalls of said housing (10), said resonant chamber (50) located between said filter (20) and the air outlet (14), for reducing airborne noise having different frequencies.

2. The air filter multi frequency resonator (100) as claimed in claim 1, wherein the dimensions of each of said holes (40a, 40b, 40c, 40d) are different.

3. The air filter multi frequency resonator (100) as claimed in claim 1, wherein said resonant chamber section (50) and the air outlet (14) are oppositely positioned.

4. The air filter multi frequency resonator (100) as claimed in claim 1, wherein the air outlet (14) is in fluid communication with the air intake manifold (not shown in figures) of an engine.

5. The air filter multi frequency resonator (100) as claimed in claim 4, wherein the engine is configured to drive a two-wheeled vehicle selected from the group consisting of a motorcycle, a motorscooter, a moped and bike.

6. The air filter multi frequency resonator (100) as claimed in claim 1, wherein the construction of said resonator plate (30) having said plurality of holes (40a, 40b, 40c, 40d) is varied by changing the location of said plurality of holes (40a, 40b, 40c, 40d) with respect to the dimensions of said resonator plate (30). The air filter multi frequency resonator (100) as claimed in claim 1, wherein a plurality of mounting bosses (60) is provided on said resonator plate (30) for attaching said resonator plate (30) to the oppositely positioned internal sidewalls of the housing (50). The air filter multi frequency resonator (100) as claimed in claim 1, wherein mounting means (not shown in any figures) are provided on the internal sidewalls of the housing (50) for attaching said resonator plate (30) thereto. The air filter multi frequency resonator (100) as claimed in claim 1, wherein fasteners (80) are used to connect said plurality of mounting bosses (60) and said mounting means. The air filter multi frequency resonator (100) as claimed in claim 1, wherein the interface between said resonator plate (30) and the oppositely positioned internal sidewalls of said housing (10) is sealed by a sealant (70).