Fluid silencer

Abstract

The present invention relates to a fluid silencer, and more specifically, comprises: a main body portion formed to be hollow so as to correspond to a pipe and having an inner surface formed to be recessed; a hollow sound-absorbing member inserted into the inner surface of the main body portion; a flange portion formed to be connected to one end of the sound-absorbing member and one end of the main body portion and connected to the pipe; and a sound-absorbing member insert inserted into the hollow portion of the sound-absorbing member and having a flow passage to allow fluid to flow, wherein the sound-absorbing member insert is characterized by maintaining airtightness so that the sound-absorbing member does not come into contact with the fluid, thereby preventing the sound-absorbing member from being damaged by the fluid. According to the present invention, the sound-absorbing material embedded in a fluid silencer can be made lighter. In addition, the sound-absorbing material embedded in the fluid silencer according to the present invention is made of a recyclable material, thereby reducing the maintenance costs of the fluid silencer.

Description

Technology Field

[0001] The present invention relates to a fluid silencer, and more specifically, to a fluid silencer that achieves excellent lightweighting and economic efficiency by replacing the rubber sound-absorbing material applied to conventional fluid silencers with a sound-absorbing material made of polyurethane. Background Technology

[0003] Generally, various types of noise generated in industrial sites across different fields are classified into noise originating from equipment such as chillers, boilers, engines, steam, fans, and cooling towers within air conditioning systems, as well as noise generated by airflow within ducts, exhaust ports, and intake ports, and noise resulting from fluid flow within pipes. In particular, submarines generate various types of noise as numerous onboard equipment and propulsion systems operate; since noise is a critical factor determining a submarine's survivability, noise reduction measures are urgently needed. As one such noise reduction measure, fluid silencers are installed and used in the piping of various mechanical devices; however, the sound-absorbing materials within these fluid silencers are consumables that require periodic replacement. Furthermore, there is a problem in that replacing all the sound-absorbing materials in the fluid silencers installed on 1,800-ton class submarines would cost approximately 800 million won.

[0004] Looking at Korean Patent Publication No. 10-2020-0001234 as a prior art document for solving the problems of such conventional fluid silencers, sound-absorbing materials such as glass fiber, polyester, and polyethylene are filled inside the fluid silencer.

[0005] However, according to this conventional technology, the sound absorption quality is inferior to that of PCL material applied to existing fluid silencers, and there is a problem in that it is difficult to reduce weight due to the large volume caused by low hardness and durability. Prior art literature

[0007] (Prior Art 1) Korean Patent Publication No. 10-2020-0001234 (2020.01.06.) The problem to be solved

[0008] The present invention has been devised to solve the problems of the prior art described above, and aims to provide a fluid silencer to which a sound-absorbing material made of recyclable polyurethane is applied. means of solving the problem

[0010] A fluid silencer according to a preferred embodiment of the present invention comprises: a main body portion formed to be hollow so as to correspond to a pipe and having an inner surface formed to be recessed; a hollow sound-absorbing member inserted into the inner surface of the main body portion; a flange portion formed to be connected to one end of the sound-absorbing member and one end of the main body portion and connected to a pipe; and a sound-absorbing member insert inserted into the hollow portion of the sound-absorbing member and having a flow passage so as to allow fluid to flow, wherein the sound-absorbing member insert is characterized by maintaining airtightness so that the sound-absorbing member does not come into contact with the fluid, thereby preventing the sound-absorbing member from being damaged by the fluid. Effects of the invention

[0012] By means of the solution to the above problem, the present invention has the effect of enabling the sound-absorbing material embedded in a fluid silencer to be made lighter.

[0013] In addition, the sound-absorbing material embedded in the fluid silencer according to the present invention is made of a recyclable material, thereby having the effect of reducing the maintenance costs of the fluid silencer.

[0014] In addition, the end of the sound-absorbing material insert, which fixes the sound-absorbing material within the fluid silencer according to the present invention, is bent and adheres closely to the outer end of the main body, thereby improving airtightness. Brief explanation of the drawing

[0016] FIG. 1 is an exploded perspective view of a fluid silencer according to a first embodiment of the present invention. FIG. 2 is a perspective view of a fluid silencer according to a first embodiment of the present invention. FIG. 3 is a cross-sectional view of a fluid silencer according to the first embodiment of the present invention. FIG. 4 is a cross-sectional view of the main body portion according to the first embodiment of the present invention. FIG. 5 is a cross-sectional view of a sound-absorbing member according to the first embodiment of the present invention. FIG. 6 is a cross-sectional view of a flange portion according to a first embodiment of the present invention. FIG. 7 is a cross-sectional view of a sound-absorbing insert according to the first embodiment of the present invention. Specific details for implementing the invention

[0017] The terms used in this specification will be briefly explained, and the invention will be described in detail.

[0018] The terms used in this invention have been selected based on currently widely used general terms while considering their functions within the invention; however, these terms may vary depending on the intent of those skilled in the art, case law, the emergence of new technologies, etc. Therefore, the terms used in this invention should be defined not merely by their names, but based on their meanings and the overall context of the invention.

[0019] When a part of a specification is described as “comprising” a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components.

[0020] Embodiments of the present invention are described below with reference to the attached drawings so that those skilled in the art can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0021] Specific details regarding the problem to be solved by the present invention, the means for solving the problem, and the effects of the invention are included in the embodiments and drawings described below. The advantages and features of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the accompanying drawings.

[0022] Hereinafter, the fluid silencer of the present invention will be described in detail with reference to the attached drawings.

[0023] Referring to FIGS. 1 to 7, a fluid silencer according to a preferred first embodiment of the present invention comprises a main body (100) formed to be hollow so as to correspond to a pipe and having an inner surface formed to be recessed, a hollow sound-absorbing member (200) inserted into the inner surface of the main body (100), a flange portion (300) provided to be coupled and connected to one end of the sound-absorbing member (200) and one end of the main body, and capable of being connected to a pipe, and a sound-absorbing member insert (400) inserted into the hollow portion of the sound-absorbing member (200) and provided with a flow passage so that fluid can flow. Furthermore, the sound-absorbing member insert (400) maintains airtightness so that the sound-absorbing member (200) does not come into contact with the fluid, thereby preventing the sound-absorbing member (200) from being damaged by the fluid. The main body (100) and the flange (300) include a plurality of fasteners (50) arranged along the circumference, and bolting members (51) can be fastened to the fasteners (50) to be joined together. Additionally, it is obvious that the flange (300) can be connected to a pipe by means of the fasteners (50).

[0024] More specifically, the main body (100) serves to accommodate the sound-absorbing member (200) inside and to be connected to a pipe through the flange (300). For example, the main body (100) includes a first sound-absorbing member insertion port (110) provided to allow the sound-absorbing member (200) to be inserted, and a first coupling groove (120) provided along the circumference of the sound-absorbing member insert (400) at one end. First, the main body (100) is provided in the shape of a hollow cylinder, and a connecting auxiliary plate (130) is provided at one end, extending in the circumferential direction for connection with the flange (300). Then, the first sound-absorbing member insertion port (110) is provided in a shape that is recessed inward from the one end of the main body (100) where the connecting auxiliary plate (130) is provided. The first sound-absorbing member insertion opening (110) is provided in a shape corresponding to the sound-absorbing member (200) so that the sound-absorbing member (200) can be compactly inserted into the main body (100). Additionally, the first coupling groove (120) is provided at one end of the main body (100) that corresponds to the part opposite the fastening auxiliary plate (130). The first coupling groove (120) is provided as a circular groove formed in a concentric circle at a point spaced apart from the diameter of the hollow part of the main body (100).

[0025] Next, the sound-absorbing member (200) is formed from a polyurethane material having a specific gravity of 0.59 to 0.61 and is inserted into the main body (100) to absorb shock caused by fluid flow, thereby serving to reduce noise. In the case of conventional sound-absorbing materials, they are made of PCL material, which has a high specific gravity and is difficult to lighten, thus posing a problem for use in facilities such as submarines. However, the sound-absorbing member (200) according to the present invention is made of a polyurethane material with a lower specific gravity than PCL material, which has the advantage of facilitating volume and weight reduction. Furthermore, since the sound-absorbing member (200) is formed from a polyurethane material, it resolves the problems of high unit costs and difficulty in lightening existing PCL sound-absorbing products formed from PCL material. Additionally, the sound-absorbing member (200) is a consumable item that can be recycled even when collected after its lifespan is exhausted, thereby reducing production and maintenance costs. Additionally, the sound-absorbing member (200) is provided with both ends inclined so that the impact of circumferential pressure and axial pressure caused by fluid flow is evenly distributed. For example, the sound-absorbing member (200) includes inclined portions (210) that protrude at an angle from both ends. The inclined portions (210) are designed so that when the sound-absorbing member (200) comes into contact with the main body portion (100) and the flange portion (300), it comes into contact at an angle, thereby ensuring that the impact of circumferential pressure and axial pressure caused by fluid flow is evenly distributed.

[0026] Next, the flange portion (300) is coupled with the main body portion (100) and the sound-absorbing member (200) and can be fastened to a pipe. Additionally, the flange portion (300) is fastened to the main body portion (100) in a state where the sound-absorbing member (200) is pressed in the axial direction, thereby serving to firmly fix the sound-absorbing material (200). Furthermore, the flange portion (300) includes a second sound-absorbing member insertion opening (310) provided to be compactly engaged with one side of the sound-absorbing member (200), and a second coupling groove (320) that allows the sound-absorbing member insert (400) to be coupled while the flange portion (300) is fastened to the main body portion (100). The second sound-absorbing member insertion port (310) is provided such that the edge of the hollow portion of the flange portion (300) is chamfered, so as to correspond to the inclined portion (210) of the sound-absorbing member (200). That is, when the sound-absorbing member (200) is inserted into the main body portion (100), the flange portion (300) covers the end of the main body portion (100) and the sound-absorbing member (200) and is fastened together.

[0027] Additionally, the sound-absorbing insert (400) is inserted into the hollow portion of the main body (100) and the flange portion (300) when the sound-absorbing member (200) is inserted into the main body (100) and the flange portion (300) is fastened, and is provided such that both ends are coupled to the first coupling groove (120) and the second coupling groove (320). That is, the sound-absorbing insert (400) is provided in the form of a hollow cylinder and includes a bent portion (410) formed by bending both ends into the shape of the letter 'U'. Furthermore, the sound-absorbing insert (400) is fixed to the hollow portion of the main body (100) and the flange portion (300) to prevent fluid from entering the gap that occurs between the combination of the main body (100), the sound-absorbing member (200), and the flange portion (300). In addition, the above-mentioned bent portion (410) is inserted into the first coupling groove (120) and the second coupling groove (320), respectively, so that the airtightness provided by the sound-absorbing member insert (400) can be strengthened.

[0028] In addition, the gasket (500) is provided between the main body (100) and the flange (300), and prevents gaps from occurring between the connection of the main body (100) and the flange (300), thereby minimizing the exposure of the sound-absorbing member (200) to air or fluid.

[0029] According to the present invention, the sound-absorbing material embedded in a fluid silencer can be made lighter. In addition, the sound-absorbing material embedded in the fluid silencer according to the present invention is made of a recyclable material, thereby reducing the maintenance costs of the fluid silencer.

[0030] The embodiments described above should be understood as exemplary in all respects and not limiting, and the scope of the invention is defined by the claims set forth below rather than by the detailed description above, and all modifications or variations derived from the meaning and scope of the claims and equivalent concepts thereof should be interpreted as being included within the scope of the invention. Explanation of the symbols

[0032] 50 : Pipe fitting 51 : Bolting member 100 : Main body 110 : First sound-absorbing member insertion opening 120 : First coupling groove 200 : Sound-absorbing member 210 : Inclined section 300 : Flange section 310 : Second sound-absorbing member insertion opening 320 : Second coupling groove 400 : Sound-absorbing insert 410 : Bent section 500 : Gasket

Claims

Claim 1 A main body portion formed to be hollow so as to correspond to a pipe and having an inner surface formed to be recessed; a hollow sound-absorbing member inserted into the inner surface of the main body portion; a flange portion provided to be coupled and connected to one end of the sound-absorbing member and one end of the main body portion, and capable of being connected to a pipe; and a sound-absorbing member insert inserted into the hollow portion of the sound-absorbing member and provided with a flow passage to allow fluid to flow; wherein the main body portion includes a first sound-absorbing member insertion opening provided to allow the sound-absorbing member to be inserted; and a first coupling groove provided along the circumference of the sound-absorbing member insert at one end portion; and the flange portion includes a second sound-absorbing member insertion opening provided to be compactly coupled with one side of the sound-absorbing member. A fluid silencer comprising: a second coupling groove that allows the sound-absorbing member insert to be coupled while the flange portion is fastened to the main body portion; wherein the first coupling groove is formed as a circular groove that forms a concentric circle at a point spaced apart from the diameter of the hollow portion of the main body portion; and wherein the sound-absorbing member insert is inserted into the hollow portion of the main body portion and the flange portion while the sound-absorbing member is inserted into the main body portion and the flange portion is fastened, and both ends are coupled to the first coupling groove and the second coupling groove, thereby maintaining airtightness so that the sound-absorbing member does not come into contact with the fluid and is not damaged by the fluid. Claim 2 A fluid silencer according to claim 1, wherein the sound-absorbing member insert comprises a bent portion formed by bending both ends into the shape of the letter 'U', and the bent portion is inserted into the first coupling groove and the second coupling groove, respectively, so as to ensure that the airtightness provided by the sound-absorbing member insert is robust. Claim 3 A fluid silencer according to claim 1, characterized in that the sound-absorbing member is formed of a polyurethane material having a specific gravity of 0.59 to 0.

61. Claim 4 A fluid silencer according to claim 1, characterized in that the sound-absorbing member is provided with both ends inclined so that the impact of circumferential pressure and axial pressure caused by fluid flow is evenly distributed. Claim 5 delete

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