JPH0228035U

JPH0228035U -

Info

Publication number: JPH0228035U
Application number: JP10485288U
Authority: JP
Priority date: 1988-08-10
Filing date: 1988-08-10
Publication date: 1990-02-23
Anticipated expiration: 2003-02-12
Also published as: JPH055386Y2

Description

[Brief explanation of drawings]

第１図は、この考案に係る換気通路用消音装置
の概略斜視図、第２図は、第１図中の矢示―
線に沿う概略断面、第３図は、通気路形成部材の
組合せ状態を示す概略斜視図、第４図は、第３図
中の矢示方向から見た通気路形成部材の側面図
、第５図は、第３図中の矢示方向から見た通気
路形成部材の側面図、第６図及び第７図は、各々
、換気通路用消音装置の使用状態を示す概略側断
面図、そして第８図〜第１２図は、各々、変形例
である通気路形成部材の概略側面図である。１……換気通路用消音装置、２……円筒枠体、
３……通気路形成部材、４……通気開口、５……
外縁、６……折返し部、７……凹部、８……凸部
、１０……通気路、１１……換気通路。 FIG. 1 is a schematic perspective view of the ventilation passage silencing device according to this invention, and FIG. 2 shows the arrows in FIG.
3 is a schematic perspective view showing the combination of the ventilation path forming members, FIG. 4 is a side view of the ventilation path forming members viewed from the direction of the arrow in FIG. 3, and FIG. The figure is a side view of the ventilation path forming member seen from the direction of the arrow in FIG. 8 to 12 are schematic side views of ventilation path forming members that are modified examples. 1... Silencer for ventilation passage, 2... Cylindrical frame,
3... Ventilation path forming member, 4... Ventilation opening, 5...
Outer edge, 6... Turned portion, 7... Concave portion, 8... Convex portion, 10... Ventilation passage, 11... Ventilation passage.

Claims

[Claims for Utility Model Registration] (1) A silencer for a ventilation passage, in which a plurality of ventilation passage forming members having ventilation openings formed with an appropriate opening ratio are arranged in parallel in the ventilation direction at appropriate intervals within a cylindrical frame. For ventilation passages, wherein each of the ventilation passage forming members has a circular outer edge inscribed in the inner surface of the cylindrical frame, and has the same size and the same shape and structure. Silencer. (2) The air passage forming members are arranged in parallel so that the respective ventilation openings are sequentially shifted by a predetermined angle to form a spiral air passage. Silencer for ventilation passages. (3) The silencer for a ventilation passage according to either claim (1) or claim (2), characterized in that the distance between the ventilation passage forming members is determined by the interposition of a ring-shaped spacer member. (4) Claim (1) characterized in that the air passage forming member has a folded portion of a predetermined width formed on the outer edge thereof, which corresponds to a ring-shaped spacer member.
) or claim (2). (5) A plurality of concave portions are formed at a predetermined interval at the distal end of the folded portion, while convex portions of the same number as the concave portions are formed at the proximal end of the folded portion and are shifted by a predetermined angle with respect to the arrangement of the concave portions. 5. The ventilation passageway silencer according to claim 4, further comprising: (6) Claims (1) to (5) characterized in that each air passage forming member is made of a sound-absorbing material.
A silencer for ventilation passages as described in any of the above. (7) Claims (1) to (5) characterized in that each air passage forming member is made of a sound-insulating material.
A silencer for ventilation passages as described in any of the above. (8) Claims (1) to 12 are characterized in that an air passage forming member made of a sound absorbing material and an air passage forming member made of a sound insulating material are arranged side by side in an appropriate combination. A silencer for a ventilation passage according to claim (5).