JPS621494B2 - - Google Patents
Info
- Publication number
- JPS621494B2 JPS621494B2 JP56124039A JP12403981A JPS621494B2 JP S621494 B2 JPS621494 B2 JP S621494B2 JP 56124039 A JP56124039 A JP 56124039A JP 12403981 A JP12403981 A JP 12403981A JP S621494 B2 JPS621494 B2 JP S621494B2
- Authority
- JP
- Japan
- Prior art keywords
- ventilation
- cylindrical body
- passage
- ventilation hole
- meandering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000009423 ventilation Methods 0.000 claims description 38
- 238000005192 partition Methods 0.000 claims description 18
- 239000011358 absorbing material Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Ventilation (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56124039A JPS57142432A (en) | 1981-08-10 | 1981-08-10 | Sound-shielding cylinder for use in vent-port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56124039A JPS57142432A (en) | 1981-08-10 | 1981-08-10 | Sound-shielding cylinder for use in vent-port |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11728976A Division JPS5343939A (en) | 1976-10-01 | 1976-10-01 | Muffling cylinder for ventilating hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57142432A JPS57142432A (en) | 1982-09-03 |
| JPS621494B2 true JPS621494B2 (zh) | 1987-01-13 |
Family
ID=14875499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56124039A Granted JPS57142432A (en) | 1981-08-10 | 1981-08-10 | Sound-shielding cylinder for use in vent-port |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57142432A (zh) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4963976B2 (ja) * | 2007-01-26 | 2012-06-27 | ヤマハ発動機株式会社 | 樹脂ブロックベルトを有するベルト式無段変速機を備えた鞍乗型車両 |
| US20150101883A1 (en) * | 2013-10-10 | 2015-04-16 | Yonghui Xu | Sound attenuation module and oversized grill |
| JP6691521B2 (ja) * | 2017-09-21 | 2020-04-28 | 富士フイルム株式会社 | 消音システム |
| BE1030595B1 (nl) * | 2022-06-07 | 2024-01-15 | Wilms N V | Wanddoorvoer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5241723Y2 (zh) * | 1972-12-25 | 1977-09-21 | ||
| JPS5237474Y2 (zh) * | 1973-09-04 | 1977-08-26 |
-
1981
- 1981-08-10 JP JP56124039A patent/JPS57142432A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57142432A (en) | 1982-09-03 |
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