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41. 发明授权

US12006953B2 Blower with silencer 有权
公开(公告)号：US12006953B2
公开(公告)日：2024-06-11
申请号：US17886556
申请日：2022-08-12
申请人： FUJIFILM Corporation
发明人： Shinya Hakuta , Shogo Yamazoe , Yoshihiro Sugawara , Akihiko Ohtsu
IPC分类号： F04D29/66 , F04D19/00 , F04D29/54
CPC分类号： F04D29/665 , F04D19/002 , F04D29/542
摘要： An axial fan that includes a casing having an inner space that penetrates in one direction, and a rotor blade disposed in the inner space of the casing, and a silencer that is disposed at a position connected to the inner space of the axial fan are provided, in which the axial fan has a sound pressure distribution having a position at which a sound pressure is high and a position at which the sound pressure is low in a circumferential direction in the inner space during driving, and the silencer is disposed at the position of the axial fan in the circumferential direction at which the sound pressure is high and is not disposed at the position at which the sound pressure is low.

42. 发明授权

US11682374B2 Soundproof structure body 有权
公开(公告)号：US11682374B2
公开(公告)日：2023-06-20
申请号：US16838497
申请日：2020-04-02
申请人： FUJIFILM Corporation
发明人： Akihiko Ohtsu , Shinya Hakuta , Shogo Yamazoe , Yoshihiro Sugawara
IPC分类号： G10K11/172 , F24F13/24 , G10K11/168
CPC分类号： G10K11/172 , F24F13/24 , G10K11/168 , F24F2013/245
摘要： A soundproof structure body includes a first tube structure and a second tube structure connected to the first tube structure and having a cross-sectional area different from the first tube structure, in which a structure body having a cross-sectional area smaller than a cross-sectional area of the first tube structure is installed in the first tube structure, and a transmission loss in a case where the structure body is installed in the first tube structure with respect to a case where the structure body is not installed in the first tube structure is positive at two frequencies adjacent to each other and difficult to generate an air column resonance mode in the first tube structure. This soundproof structure body generates a soundproof effect even at frequencies other than air column resonance of a tube structure such as a duct or a muffler, has a small size, and can obtain a high transmission loss in a wide-band.

43. 发明授权

US11636839B2 Soundproof structure body 有权
公开(公告)号：US11636839B2
公开(公告)日：2023-04-25
申请号：US17039072
申请日：2020-09-30
申请人： FUJIFILM Corporation
发明人： Akihiko Ohtsu , Yoshihiro Sugawara , Shinya Hakuta , Shogo Yamazoe
IPC分类号： G10K11/172 , F24F13/24 , F24F13/02
摘要： Provided is a soundproof structure body including an opening member that forms an opening tube line having a cross-sectional area S, and at least two resonance structures for sound waves that are installed inside the opening tube line, and in a case where a cross-sectional area of the resonance structure is defined as Si, a width thereof is defined as di, an interval between the two resonance structures is defined as L, an impedance of the two resonance structures is defined as Zi, and a synthetic acoustic impedance is defined as Zc, a condition of Expression (1) is satisfied at a resonance frequency f0 at which a theoretical absorption value At is a maximum value. This soundproof structure body can realize high absorption using a plurality of resonance structures. At(f0, L, S, Si, di, Zi)>0.75 (1), Here, L>0, S>0, Si (i=1, 2)>0, di (i=1, 2)>0

44. 发明授权

US11580948B2 Soundproof system 有权
公开(公告)号：US11580948B2
公开(公告)日：2023-02-14
申请号：US16718760
申请日：2019-12-18
申请人： FUJIFILM Corporation
发明人： Akihiko Ohtsu , Shinya Hakuta , Shogo Yamazoe
IPC分类号： G10K11/172 , F01N1/02 , G10K11/162 , F24F13/24
摘要： A soundproof system includes a tube structure having one or more opening ends and a soundproof structure having an opening portion or a radiation surface. The following Expression (1) is satisfied in a case in which a phase difference between sound incident on the soundproof structure and sound re-radiated from the soundproof structure is defined a phase difference as θ1; for one or more maximum values of the pressure of sound formed in the tube structure, a distance between the opening portion or the radiation surface and a position where the sound pressure has a maximum value in the tube structure is L; a wavelength of the incident sound is λ; and a phase difference θ2 is defined as 2π×2L/λ: |θ1−θ2|≤π/2 (1). The soundproof system with a small size can obtain high transmission loss in a wide band.

45. 发明授权

US10971129B2 Soundproof structure, louver, and soundproof wall 有权
公开(公告)号：US10971129B2
公开(公告)日：2021-04-06
申请号：US15848680
申请日：2017-12-20
申请人： FUJIFILM Corporation
发明人： Shogo Yamazoe , Shinya Hakuta , Masayuki Naya , Tadashi Kasamatsu
IPC分类号： G10K11/175 , E04B1/84 , G10K11/172 , E04B1/99
摘要： A soundproof structure has at least one soundproof cell including a frame having a hole portion and a film fixed to the frame so as to cover the hole portion. The soundproof cell is disposed in an opening member having an opening in a state in which a film surface of the film is inclined with respect to an opening cross section of the opening member and a region serving as a ventilation hole, through which gas passes, is provided in the opening member.

46. 发明授权

US10923094B2 Soundproof structure 有权
公开(公告)号：US10923094B2
公开(公告)日：2021-02-16
申请号：US15854087
申请日：2017-12-26
申请人： FUJIFILM Corporation
发明人： Shinya Hakuta , Shogo Yamazoe
IPC分类号： G10K11/16 , G10K11/172 , E04B1/84 , E04B1/99
摘要： There is provided a laminated soundproof structure formed by laminating a single layer soundproof structure having one or more soundproof cells which are arranged in a two-dimensional plane and each of which includes a frame, a film, and an opening portion including a hole or includes a frame and a film. The single layer soundproof structure has a shielding peak frequency, which is determined by the opening portion of each of the soundproof cells and at which a transmission loss is maximized, on a lower frequency side than a first natural vibration frequency of the film of each of the soundproof cells. The conditions of at least one of the frame, the film, or the opening portion in the laminated one and other soundproof cells are different.

47. 发明授权

US10861432B2 Soundproof structure and opening structure 有权
公开(公告)号：US10861432B2
公开(公告)日：2020-12-08
申请号：US16534429
申请日：2019-08-07
申请人： FUJIFILM Corporation
发明人： Shinya Hakuta , Shogo Yamazoe , Akihiko Ohtsu
IPC分类号： G10K11/172 , G10K11/02 , G10K11/04 , E04B1/84 , G10K11/162 , G10K11/16 , G10K11/00
摘要： Provided are a soundproof structure and an opening structure which is easy to be manufactured, has a light weight, and is capable of absorbing sound in a wide frequency bandwidth. The soundproof structure includes a tubular member and a film member arranged so as to block a hollow portion of the tubular member. Assuming that a wavelength corresponding to a resonance frequency in a single film vibration element of the film member is λa, lengths from a position at which the film member is attached to two opened end surfaces of the tubular member are L1 and L2, an opened end correction length is δ, and n is an integer of 0 or more, at least one of (λa/4−λa/8)+n×λa/2−δ≤L1≤(λa/4+λa/8)+n×λa/2−δ or (λa/4−λa/8)+n×λa/2−δ≤L2≤(λa/4+λa/8)+n×λa/2−δ is satisfied.

48. 发明授权

US10854183B2 Soundproof structure 有权
公开(公告)号：US10854183B2
公开(公告)日：2020-12-01
申请号：US15822638
申请日：2017-11-27
申请人： FUJIFILM Corporation
发明人： Shogo Yamazoe , Shinya Hakuta , Tadashi Kasamatsu , Masayuki Naya
IPC分类号： G10K11/16
摘要： There is provided a soundproof structure which is light and thin, which has air permeability so that wind and heat can pass therethrough and accordingly no heat accumulates on the inside, and which is suitable for equipment, automobiles, and household applications. The soundproof structure has one or more soundproof cells. Each soundproof cell includes a frame having a through-hole through which sound passes, a film fixed to the frame, an opening portion configured to include one or more holes drilled in the film, and a weight disposed on the film. The soundproof structure has a first shielding peak frequency, which is determined by the opening portion drilled in the film and at which a transmission loss is maximized, on a lower frequency side than a first natural vibration frequency of the film of each soundproof cell and a second shielding peak frequency, which is determined by the weight and at which a transmission loss is maximized, on a higher frequency side than the first natural vibration frequency of the film, and selectively insulates sound in a predetermined frequency band centered on the first shielding peak frequency and sound in a predetermined frequency band centered on the second shielding peak frequency.

49. 发明授权

US10789929B2 Soundproof structure and soundproof system 有权
公开(公告)号：US10789929B2
公开(公告)日：2020-09-29
申请号：US16296499
申请日：2019-03-08
申请人： FUJIFILM Corporation
发明人： Shinya Hakuta , Shogo Yamazoe
IPC分类号： G10K11/162 , F24F13/24 , F24F13/02 , G10K11/172 , G10K11/16 , E04B1/84
摘要： A soundproof structure has two or more soundproof units. Each of the soundproof units has an outer shell having a cylindrical shape, has a hollow inner space inside the outer shell, and has a first opening portion opened to outside on a surface that is one end portion of the outer shell in an axis direction of the cylindrical shape. The two soundproof units adjacent to each other are disposed in the axis direction such that the first opening portions face each other. The first opening portions facing each other are spaced apart from each other in the axis direction. An average distance in the axis direction between the first opening portions facing each other is less than 20 mm. Accordingly, there are provided a soundproof structure and a soundproof system which can insulate sounds on the low frequency side with a simple configuration, are small and lightweight, and can easily change the frequency characteristics.

50. 发明申请

US20190186126A1 SOUNDPROOF STRUCTURE 审中-公开
公开(公告)号：US20190186126A1
公开(公告)日：2019-06-20
申请号：US16284424
申请日：2019-02-25
申请人： FUJIFILM Corporation
发明人： Akihiko OHTSU , Shinya Hakuta , Shogo Yamazoe
IPC分类号： E04B1/84 , G10K11/162
CPC分类号： E04B1/84 , E01F8/00 , E04B2001/8263 , E04B2001/8452 , G10K11/16 , G10K11/162 , G10K11/172
摘要： There is provided a soundproof structure capable of obtaining a sufficient soundproofing effect by suppressing the leaking of sound due to a diffraction phenomenon in a partition member used for soundproofing. A soundproof unit, which has a frame body having an opening portion and a film that is disposed so as to cover the opening portion and vibrates according to a sound incident on the film, and a partition member, to which one or more soundproof units are attached, are provided.

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