IT1123040B - Valvola a farfalla di sovrapressione per un ventilatore - Google Patents
Valvola a farfalla di sovrapressione per un ventilatoreInfo
- Publication number
- IT1123040B IT1123040B IT5231776A IT5231776A IT1123040B IT 1123040 B IT1123040 B IT 1123040B IT 5231776 A IT5231776 A IT 5231776A IT 5231776 A IT5231776 A IT 5231776A IT 1123040 B IT1123040 B IT 1123040B
- Authority
- IT
- Italy
- Prior art keywords
- overpressure
- fan
- butterfly valve
- butterfly
- valve
- Prior art date
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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/12—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures
- F04D25/14—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures and having shutters, e.g. automatically closed when not in use
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Flow Control Members (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752557582 DE2557582C3 (de) | 1975-12-20 | 1975-12-20 | Überdruckklappe für Ventilator |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1123040B true IT1123040B (it) | 1986-04-30 |
Family
ID=5965006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT5231776A IT1123040B (it) | 1975-12-20 | 1976-11-24 | Valvola a farfalla di sovrapressione per un ventilatore |
Country Status (8)
Country | Link |
---|---|
AT (1) | AT344857B (de) |
BE (1) | BE849425A (de) |
CH (1) | CH600162A5 (de) |
DE (1) | DE2557582C3 (de) |
FR (1) | FR2335713A1 (de) |
GB (1) | GB1549944A (de) |
IT (1) | IT1123040B (de) |
SE (1) | SE429376B (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2204660B (en) * | 1987-04-11 | 1991-04-17 | Pentec Engineering Services Li | Valve arrangement |
DE8810027U1 (de) * | 1988-08-05 | 1988-09-22 | Haver & Boecker, 4740 Oelde | Vorrichtung zum Füllen von offenen Behältern |
DE4333663C1 (de) * | 1993-10-02 | 1995-05-11 | Patent Und Innovationsagentur | Klappenventil |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2279425A (en) * | 1939-11-16 | 1942-04-14 | Westinghouse Electric & Mfg Co | Discharge shutter for blowers |
GB1197023A (en) * | 1968-04-04 | 1970-07-01 | Royair Ltd | Improvements in and relating to Dampers for Ventilating Systems |
US3826179A (en) * | 1972-10-20 | 1974-07-30 | American Warming Ventilation | Differential pressure responsive damper |
DE2431065A1 (de) * | 1974-06-28 | 1976-01-15 | Maico Elektroapparate | Verschlusseinrichtung |
-
1975
- 1975-12-20 DE DE19752557582 patent/DE2557582C3/de not_active Expired
-
1976
- 1976-10-30 CH CH1367576A patent/CH600162A5/xx not_active IP Right Cessation
- 1976-11-24 IT IT5231776A patent/IT1123040B/it active
- 1976-11-29 AT AT880676A patent/AT344857B/de not_active IP Right Cessation
- 1976-12-01 SE SE7613450A patent/SE429376B/xx not_active IP Right Cessation
- 1976-12-13 FR FR7637509A patent/FR2335713A1/fr active Granted
- 1976-12-15 BE BE173275A patent/BE849425A/xx not_active IP Right Cessation
- 1976-12-20 GB GB5305376A patent/GB1549944A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
SE7613450L (sv) | 1977-06-21 |
ATA880676A (de) | 1977-12-15 |
CH600162A5 (de) | 1978-06-15 |
BE849425A (fr) | 1977-04-01 |
DE2557582A1 (de) | 1977-06-30 |
DE2557582C3 (de) | 1979-10-18 |
FR2335713B1 (de) | 1982-07-02 |
GB1549944A (en) | 1979-08-08 |
AT344857B (de) | 1978-08-10 |
SE429376B (sv) | 1983-08-29 |
DE2557582B2 (de) | 1979-03-01 |
FR2335713A1 (fr) | 1977-07-15 |
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