GB895566A - Sound absorbent casing for apparatus, such as an extractor fan, which in operation generates sound - Google Patents

Sound absorbent casing for apparatus, such as an extractor fan, which in operation generates sound

Info

Publication number
GB895566A
GB895566A GB4348060A GB4348060A GB895566A GB 895566 A GB895566 A GB 895566A GB 4348060 A GB4348060 A GB 4348060A GB 4348060 A GB4348060 A GB 4348060A GB 895566 A GB895566 A GB 895566A
Authority
GB
United Kingdom
Prior art keywords
fan
cover
hoods
shaft
inlet
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
Application number
GB4348060A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB4348060A priority Critical patent/GB895566A/en
Publication of GB895566A publication Critical patent/GB895566A/en
Expired legal-status Critical Current

Links

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
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/02—Roof ventilation
    • F24F7/025—Roof ventilation with forced air circulation by means of a built-in ventilator

Abstract

895,566. Ventilators. SOLZMAN, I. I. Dec. 16, 1960, No. 43480/60. Class 137 [Also in Groups XIII and XXVI] A sound insulating casing for an extractor fan' is formed of synthetic plastic material which may be reinforced with glass fibre and comprises a rectangular base 18, a Venturi inlet 17, upper and lower spaced hoods 14, 13 defining an air outlet passage 29 and fan chamber 24, and a surmounting cover 11 for an electric motor 37, the said cover having a rough porous inner surface 11<SP>1</SP>. A fan 25, e.g. a squirrel cage blower wheel or turbine fan, is mounted in lower chamber 24 and is driven by means of a shaft 36 extending through an aperture 27 in the flat annular portion 26 of hood 14 to motor 37. The confronting inner surfaces of hoods 13 and 14 are smooth and spaced apart by means of screws 23. An upwardly projecting cylindrical sleeve 32 attached to flat portion 26 defines an inlet 31 for the admission of outside air to the cover 11. Drainage holes 8 for condensed liquid are provided in lower hood 13 at its junction with inlet 17, the said junction being below the upper extremity of the latter. In the modification of Fig. 7, the fan 52 is mounted in lower compartment 46, air being expelled under the edge 46a thereof. The motor 65 is located in a hinged cover 47 having outside air inlets 70 with cowls 72, and drives fan 52 indirectly through shaft 64, belt 62 and shaft 51 which is supported by bearings 58 attached to bracket 53. In a further modification (Fig. 5, not shown) the casing is of similar construction to that shown in Fig. 2, but is formed from metal sheeting coated on each side with synthetic plastic material, the inner coating of cover 11 being rough and porous. The construction also includes bolts which extend through base member 18 and hoods 13, 14 and support concentric spacing sleeves. U.S.A. Specifications 2,526,290 and 2,777,382 are referred to.
GB4348060A 1960-12-16 1960-12-16 Sound absorbent casing for apparatus, such as an extractor fan, which in operation generates sound Expired GB895566A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4348060A GB895566A (en) 1960-12-16 1960-12-16 Sound absorbent casing for apparatus, such as an extractor fan, which in operation generates sound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4348060A GB895566A (en) 1960-12-16 1960-12-16 Sound absorbent casing for apparatus, such as an extractor fan, which in operation generates sound

Publications (1)

Publication Number Publication Date
GB895566A true GB895566A (en) 1962-05-02

Family

ID=10428928

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4348060A Expired GB895566A (en) 1960-12-16 1960-12-16 Sound absorbent casing for apparatus, such as an extractor fan, which in operation generates sound

Country Status (1)

Country Link
GB (1) GB895566A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140134A (en) * 1983-05-16 1984-11-21 Marvel Specialty Acoustical shield assembly for a sewing machine
EP1914718A1 (en) * 2006-10-20 2008-04-23 Siemens Aktiengesellschaft Use of fibre composite materials for enclosures for reducing sound emitted into the surroundings
GB2568131A (en) * 2017-11-01 2019-05-08 Fantech Pty Ltd Exhaust assemblies

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140134A (en) * 1983-05-16 1984-11-21 Marvel Specialty Acoustical shield assembly for a sewing machine
EP1914718A1 (en) * 2006-10-20 2008-04-23 Siemens Aktiengesellschaft Use of fibre composite materials for enclosures for reducing sound emitted into the surroundings
GB2568131A (en) * 2017-11-01 2019-05-08 Fantech Pty Ltd Exhaust assemblies
GB2568131B (en) * 2017-11-01 2021-09-01 Fantech Pty Ltd Exhaust assemblies

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