ZA723142B - Air flow control device - Google Patents
Air flow control deviceInfo
- Publication number
- ZA723142B ZA723142B ZA723142A ZA723142A ZA723142B ZA 723142 B ZA723142 B ZA 723142B ZA 723142 A ZA723142 A ZA 723142A ZA 723142 A ZA723142 A ZA 723142A ZA 723142 B ZA723142 B ZA 723142B
- Authority
- ZA
- South Africa
- Prior art keywords
- control device
- air flow
- flow control
- air
- flow
- Prior art date
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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/76—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by means responsive to temperature, e.g. bimetal springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/30—Velocity
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7759—Responsive to change in rate of fluid flow
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Air-Flow Control Members (AREA)
- Fluid-Driven Valves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14516771A | 1971-05-20 | 1971-05-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA723142B true ZA723142B (en) | 1973-02-28 |
Family
ID=22511890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA723142A ZA723142B (en) | 1971-05-20 | 1972-05-09 | Air flow control device |
Country Status (8)
Country | Link |
---|---|
US (1) | US3719321A (xx) |
AU (1) | AU455701B2 (xx) |
CA (2) | CA957553A (xx) |
DE (1) | DE2225402A1 (xx) |
FR (1) | FR2138820B3 (xx) |
GB (1) | GB1387005A (xx) |
IT (1) | IT957975B (xx) |
ZA (1) | ZA723142B (xx) |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3809314A (en) * | 1971-10-20 | 1974-05-07 | Barber Colman Co | Self-powered variable volume air damper control |
NL7305789A (xx) * | 1972-05-05 | 1973-11-07 | ||
US3917161A (en) * | 1972-05-05 | 1975-11-04 | Danfoss As | Air inlet means for air conditioning installations or the like |
US3837571A (en) * | 1972-11-15 | 1974-09-24 | Dynamics Corp America | Self-controlled air distribution system |
US3806027A (en) * | 1973-06-05 | 1974-04-23 | Universal Pneumatic Controls | Multi port flow controller |
US4017025A (en) * | 1974-01-28 | 1977-04-12 | Wehr Corporation | Variable volume control box and system incorporating same |
US3941310A (en) * | 1974-01-28 | 1976-03-02 | Wehr Corporation | Thermostatic control for use in variable air distribution systems |
US3912223A (en) * | 1974-03-15 | 1975-10-14 | Nittan Co Ltd | Fireproof smoke damper |
US3961748A (en) * | 1974-08-19 | 1976-06-08 | The Trane Company | Air distribution regulator apparatus |
CA1045883A (en) * | 1975-06-27 | 1979-01-09 | Honeywell Inc. | Fluidic flow sensing and control apparatus |
US4182486A (en) * | 1975-06-27 | 1980-01-08 | Honeywell Inc. | Fluidic flow sensing and control apparatus |
USRE31973E (en) * | 1975-06-27 | 1985-08-20 | Honeywell Inc. | Fluidic flow sensing and control apparatus |
US4042173A (en) * | 1975-09-04 | 1977-08-16 | Barber-Colman Company | Method and apparatus for controlling volume air flow |
US4007780A (en) * | 1975-10-24 | 1977-02-15 | Robertshaw Controls Company | Heat exchange system and method and control device therefor |
US4040564A (en) * | 1976-02-25 | 1977-08-09 | Dynamics Corporation Of America | System powered damper and control unit |
US4108371A (en) * | 1976-12-09 | 1978-08-22 | Leemhuis Louis J | Damper control device |
US4120453A (en) * | 1977-04-29 | 1978-10-17 | Carrier Corporation | Air distribution unit |
US4196849A (en) * | 1977-11-07 | 1980-04-08 | Environmental Elements Corporation | Variable volume control assembly |
US4186876A (en) * | 1977-12-07 | 1980-02-05 | Carrier Corporation | System powered damper blade assembly for use in an air conditioning system |
US4244517A (en) * | 1979-03-22 | 1981-01-13 | The Trane Company | Temperature control for variable volume air conditioning system |
US4324358A (en) * | 1980-07-02 | 1982-04-13 | Carrier Corporation | Minimum airflow control |
US4332269A (en) * | 1980-09-29 | 1982-06-01 | Honeywell Inc. | Sloped nozzle pneumatic device |
US4331291A (en) * | 1980-10-14 | 1982-05-25 | Tempmaster Corporation | Pneumatic control circuit for air distribution systems |
US4375224A (en) * | 1981-01-21 | 1983-03-01 | Acutherm, Inc. | Air conditioning control equipment |
US4607789A (en) * | 1981-05-22 | 1986-08-26 | Hoffman Controls Corporation | Proportional motor drive control |
US4467956A (en) * | 1982-11-10 | 1984-08-28 | Kreuter Kenneth G | System for supplying conditioned air, thermostat therefor and methods of making the same |
US4634047A (en) * | 1985-09-13 | 1987-01-06 | Tempmaster Corporation | Thermostatically adjustable pressure regulator |
US4838484A (en) * | 1987-07-31 | 1989-06-13 | Kreuter Manufacturing Co., Inc. | Variable volume air conditioning system with velocity readout at the thermostat |
US4756474A (en) * | 1987-10-30 | 1988-07-12 | Carrier Corporation | Duct pressure powered air volume controller |
US4796651A (en) * | 1988-03-30 | 1989-01-10 | LeRoy D. Ginn | Variable gas volume flow measuring and control methods and apparatus |
US4957238A (en) * | 1989-10-30 | 1990-09-18 | Kreuter Mfg. Co., Inc. | Pneumatic variable air volume controller |
NO178839C (no) * | 1991-11-25 | 1996-06-12 | Ottestad Nils T | Strömningsregulator for opprettholdelse av en stabil strömningsmengde av et fluidum |
US9759442B2 (en) | 2005-12-27 | 2017-09-12 | American Aldes Ventilation Corporation | Method and apparatus for passively controlling airflow |
US7766734B2 (en) * | 2005-12-27 | 2010-08-03 | American Aldes Ventilation Corporation | Method and apparatus for passively controlling airflow |
FR2925660B1 (fr) * | 2007-12-20 | 2010-02-05 | Atlantic Climatisation & Venti | Systeme de climatisation en boucle |
US7940188B2 (en) * | 2008-02-07 | 2011-05-10 | Veltek Associates, Inc. | Air sampling system having a plurality of air sampling devices with their own flow switches |
EP2537148B1 (en) * | 2010-02-18 | 2021-06-23 | Veltek Associates, INC. | Improved air sampling system |
US9939416B2 (en) | 2014-08-28 | 2018-04-10 | Veltek Assoicates, Inc. | Programmable logic controller-based system and user interface for air sampling in controlled environments |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2778372A (en) * | 1953-02-18 | 1957-01-22 | Taylor Instrument Co | Pneumatic pressure responsive devices |
US2790372A (en) * | 1953-03-30 | 1957-04-30 | Eugene R Cooper | Damper assembly |
US2922580A (en) * | 1958-03-05 | 1960-01-26 | Anemostat Corp America | Electric constant volume control |
US3037702A (en) * | 1960-02-08 | 1962-06-05 | Honeywell Regulator Co | Air conditioning apparatus having temperature and pressure control |
US3602427A (en) * | 1970-05-06 | 1971-08-31 | Honeywell Inc | Pressure discriminator |
-
1971
- 1971-05-20 US US3719321D patent/US3719321A/en not_active Expired - Lifetime
-
1972
- 1972-05-08 CA CA141,521A patent/CA957553A/en not_active Expired
- 1972-05-09 ZA ZA723142A patent/ZA723142B/xx unknown
- 1972-05-18 AU AU42422/72A patent/AU455701B2/en not_active Expired
- 1972-05-18 GB GB2347872A patent/GB1387005A/en not_active Expired
- 1972-05-19 IT IT5038172A patent/IT957975B/it active
- 1972-05-19 DE DE19722225402 patent/DE2225402A1/de active Pending
- 1972-05-19 FR FR7218109A patent/FR2138820B3/fr not_active Expired
-
1978
- 1978-10-04 CA CA 312676 patent/CA1053062B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT957975B (it) | 1973-10-20 |
FR2138820A1 (xx) | 1973-01-05 |
FR2138820B3 (xx) | 1975-08-08 |
DE2225402A1 (de) | 1972-11-30 |
GB1387005A (en) | 1975-03-12 |
US3719321A (en) | 1973-03-06 |
AU4242272A (en) | 1973-11-22 |
CA957553A (en) | 1974-11-12 |
AU455701B2 (en) | 1974-11-21 |
CA1053062B (en) | 1979-04-24 |
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