GB1165211A - Ventilating Appliance including a Centrifugal Fan - Google Patents
Ventilating Appliance including a Centrifugal FanInfo
- Publication number
- GB1165211A GB1165211A GB1784366A GB1784366A GB1165211A GB 1165211 A GB1165211 A GB 1165211A GB 1784366 A GB1784366 A GB 1784366A GB 1784366 A GB1784366 A GB 1784366A GB 1165211 A GB1165211 A GB 1165211A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fan
- sound
- wall
- expanded
- ventilator
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
1,165,211. Ventilating. SOUND ATTENUATORS Ltd. 24 July, 1967 [22 April, 1966], No. 17843/66. Heading F4V. [Also in Division F1] In a ventilator the scroll chamber of a centrifugal fan is defined by the interior surface of a hollow slab of expanded plastics material, e.g. expanded polyurethane, to reduce the noise made by the fan or carried by air reaching the fan. The slab comprises a central portion 11, Fig. 1, and two side walls (12, 13), Fig. 2 (not shown). One or more sound-damping baffles 39 are also provided, each baffle comprising a sheet metal core covered with expanded plastic material. The ventilator is secured to the wall of a room, with its inlet communicating with a passage through the wall. Air is blown by the fan through passage 15, pipe bend 35, washable fabric filter bag 36 and an outlet grid in the top or front wall of a plastics sheet-metal outer casing 38. An electric heater may be arranged in the pipe bend. The compartment containing the filter bag may be lined with sound-damping material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1784366A GB1165211A (en) | 1966-04-22 | 1966-04-22 | Ventilating Appliance including a Centrifugal Fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1784366A GB1165211A (en) | 1966-04-22 | 1966-04-22 | Ventilating Appliance including a Centrifugal Fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1165211A true GB1165211A (en) | 1969-09-24 |
Family
ID=10102199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1784366A Expired GB1165211A (en) | 1966-04-22 | 1966-04-22 | Ventilating Appliance including a Centrifugal Fan |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1165211A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2001135A (en) * | 1977-07-13 | 1979-01-24 | Carrier Corp | Pressure variation absorber |
| GB2119438A (en) * | 1981-11-09 | 1983-11-16 | Air Domestique Limited | Acoustic ventilation device |
-
1966
- 1966-04-22 GB GB1784366A patent/GB1165211A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2001135A (en) * | 1977-07-13 | 1979-01-24 | Carrier Corp | Pressure variation absorber |
| GB2001135B (en) * | 1977-07-13 | 1982-01-27 | Carrier Corp | Pressure variation absorber |
| GB2119438A (en) * | 1981-11-09 | 1983-11-16 | Air Domestique Limited | Acoustic ventilation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 49R | Reference inserted (sect. 9/1949) | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |