JPH0367952U

JPH0367952U -

Info

Publication number: JPH0367952U
Application number: JP12958189U
Authority: JP
Priority date: 1989-11-06
Filing date: 1989-11-06
Publication date: 1991-07-03
Anticipated expiration: 2004-11-06
Also published as: JPH0754753Y2

Description

[Brief explanation of drawings]

第１図はこの考案による消音型換気グリルを含
む換気装置の正面図、第２図は消音チヤンバの分
解斜視図、第３図は接続口の分解斜視図、第４図
は接続口の断面図、第５図は消音チヤンバの他の
実施例を示す断面図、第６図は従来例としての消
音型換気グリルを含む換気装置の正面図、第７図
は従来の消音チヤンバの断面図である。図におい
て、１は送風機、２は換気ダクト、３は消音型換
気グリル、４は接続口、５はグリル装着開口部、
６は消音チヤンバ、７はグリル、８は風向板、９
は穴、１０は背面空気層、１１は吸音材、１２は
クロス、１３は吸音筒、１５はカバー部材、１６
は接続フランジ、１７は接続パイプ、１８，２０
はバーリング形状部である。なお、図中同一符号
は、同一又は相当部分を示す。 Figure 1 is a front view of a ventilation system including a noise-reducing ventilation grill according to this invention, Figure 2 is an exploded perspective view of the noise-reducing chamber, Figure 3 is an exploded perspective view of the connection port, and Figure 4 is a sectional view of the connection port. , FIG. 5 is a sectional view showing another embodiment of the silencing chamber, FIG. 6 is a front view of a ventilation system including a conventional silencing type ventilation grille, and FIG. 7 is a sectional view of a conventional silencing chamber. . In the figure, 1 is a blower, 2 is a ventilation duct, 3 is a noise-reducing ventilation grill, 4 is a connection port, 5 is a grill attachment opening,
6 is a sound deadening chamber, 7 is a grill, 8 is a wind direction plate, 9
10 is a hole, 10 is a back air layer, 11 is a sound absorbing material, 12 is a cloth, 13 is a sound absorbing tube, 15 is a cover member, 16
is a connection flange, 17 is a connection pipe, 18, 20
is a burring shaped part. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims

[Scope of Claim for Utility Model Registration] (1) A sound deadening chamber having a connection port for connecting to a ventilation duct on one side and a grill mounting opening on the bottom side, and a sound damping chamber installed in the grill mounting opening of the sound damping chamber, The silencing chamber has a rim that forms a ventilation opening in the room, and the silencing chamber has a ventilation flow flowing between the opening of the connection port and the grille mounting opening on the side of the connection port opening or the grille mounting opening. A wind direction plate with holes for guiding toward the opening side is provided obliquely or in an arc shape so as to form an air layer between the outer shell of the sound deadening chamber, and is formed by the wind direction board and the inner surface of the sound deadening chamber. This noise-absorbing ventilation grill features a sound-absorbing material attached to the inner surface of the ventilation duct. (2) The connection port is made of a sound-absorbing tube made of glass wool with a cross-covered inner surface on the side of the ventilation path through which the ventilation flow passes;
Consisting of a cover member that covers the outer periphery of this sound-absorbing tube, a connecting member that connects one end of the cover member to the sound-deadening chamber, and a connecting pipe that connects the other end of the cover member to the ventilation duct. The noise-reducing ventilation grille according to claim 1, characterized in that: (3) The end face of the sound-absorbing tube on the sound-deadening chamber side is covered by the inner fitting of a bar-ring-like part formed in the opening of the sound-deadening chamber, and the end face of the sound-absorbing pipe on the side connected to the ventilation duct is covered with a bar-ring-shape part formed at the end of the connecting pipe. 3. The noise-reducing ventilation grille according to claim 2, characterized in that it is coated with.