GB1380261A - Fluid flow control apparatus - Google Patents
Fluid flow control apparatusInfo
- Publication number
- GB1380261A GB1380261A GB602271A GB602271A GB1380261A GB 1380261 A GB1380261 A GB 1380261A GB 602271 A GB602271 A GB 602271A GB 602271 A GB602271 A GB 602271A GB 1380261 A GB1380261 A GB 1380261A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- chamber
- inlet
- conduits
- outlet
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/201—Controlled valves
- A61M16/202—Controlled valves electrically actuated
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/201—Controlled valves
- A61M16/206—Capsule valves, e.g. mushroom, membrane valves
Landscapes
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Accessories For Mixers (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
1380261 Respiratory appliances BRITISH OXYGEN CO Ltd 1 March 1972 [4 March 1971] 6022/71 Heading AST Apparatus (Fig. 1) for selectively providing constant, increasing or decreasing flow rates for each of two fluids, e.g. gases in a lung ventilator, which are subsequently to be mixed (Fig. 4) comprises a conduit 2, 4 for each fluid; a fluid-flow regulator 6 located in each conduit 2, 4; a chamber 14 communicating with both regulators 6; a first valve 20 for placing the chamber 14 selectively in communication with either the atmosphere or a source of pressurised fluid; a second valve 22 for venting the chamber to atmosphere through an adjustable impedance 24; and a pair of linked valves 26 for venting the conduits 2, 4 downstream of the regulators 6 to atmosphere. The source of pressurised fluid may be the source of one of the fluids to be mixed, in which case the chamber 14 is connected as shown to one of the conduits 2, 4 upstream of the regulator 6, via a regulator 16 and an adjustable throttle valve 18. The valves 20, 22, 26 are operated by solenoids S20, S22 and S26 respectively. Regulators 6 are designed to maintain a pressure in conduits 2, 4 substantially equal to that in the chamber 14. A constant flow rate of both fluids is thus obtained when all solenoids are deenergised, as shown, and the pressure in chamber 14 is at a constant high value. A reducing flow rate is obtained by energising solenoid S22 to vent chamber 14 to atmosphere. An increasing flow rate is obtained by initially energising solenoids S20 to S26, and then deenergising them. The above apparatus is connected in series with apparatus (Fig. 4) for mixing the two fluids in a preset ratio selected from a set of at least two possible preset ratios, and comprising at least one inlet conduit 40 for each fluid, and at least two outlet conduits 42 each connected to both or all inlet conduits 40 through separate preset flow impedances 52, and in which each outlet conduit 42 is connected through a separate outlet valve 56, 58, 60 to a common outlet manifold 48. When a plurality of inlet conduits 40 are provided for each fluid, each inlet conduit of each plurality is connected through a separate inlet valve 50, 51, 53 to a common inlet manifold 44. The apparatus shown supplies, through outlet valves 56, 58, 60, the two gases A, B mixed in three preset ratios, as well as supplying pure A or pure B through additional outlet valves 54 or 62 respectively. The flow rate is selected by operating a selected inlet valve. The inlet valves are solenoid operated. The ratio is selected by operating a selected outlet valve. Each flow impedance includes a non-return valve (64), Fig. 5 (not shown) in series with an adjustable throttle valve (66).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB602271A GB1380261A (en) | 1971-03-04 | 1971-03-04 | Fluid flow control apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB602271A GB1380261A (en) | 1971-03-04 | 1971-03-04 | Fluid flow control apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1380261A true GB1380261A (en) | 1975-01-08 |
Family
ID=9806998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB602271A Expired GB1380261A (en) | 1971-03-04 | 1971-03-04 | Fluid flow control apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1380261A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3756714A1 (en) * | 2013-03-15 | 2020-12-30 | Mallinckrodt Hospital Products IP Limited | Therapeutic gas delivery device with pulsed and continuous flow control |
-
1971
- 1971-03-04 GB GB602271A patent/GB1380261A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3756714A1 (en) * | 2013-03-15 | 2020-12-30 | Mallinckrodt Hospital Products IP Limited | Therapeutic gas delivery device with pulsed and continuous flow control |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1250395A (en) | ||
US3830256A (en) | Fluid mixing | |
GB1344712A (en) | Method and apparatus for mixing gases | |
US3809109A (en) | Method and apparatus for mixing gases under pressure particularly for respirators and medical devices | |
GB1480010A (en) | Fluid handling assembly | |
GB1490553A (en) | Fluid flow apparatus | |
GB1450539A (en) | Control system for exhaust gas recirculating valve | |
AU4946685A (en) | Transfusion multi-flow rate pinch valve | |
US2378468A (en) | Pressure regulator | |
GB1122817A (en) | Method and apparatus for mixing gases in proportion | |
GB1380261A (en) | Fluid flow control apparatus | |
GB1149183A (en) | Improvements in or relating to fluid control valves | |
GB1361575A (en) | Gas valves | |
GB1097922A (en) | Improvements in fluid supply regulators | |
GB1507020A (en) | Apparatus for the control of gas/air flow ratio in a burner system | |
US3762427A (en) | Method and apparatus for mixing pressure gases particularly for respirators and medical apparatus | |
GB907085A (en) | Fluid flow control valves | |
GB1100996A (en) | A high-pressure gas inlet valve device for a respiratory apparatus | |
GB1284811A (en) | Flow control valve | |
US3598134A (en) | Ratio controller for gases | |
GB1362540A (en) | Producing gas mixtures | |
GB799024A (en) | Improvements in apparatus through which a fluid medium passes | |
GB1130692A (en) | Gas mixer | |
SU1090392A1 (en) | Apparatus for artificial ventialtion of the lungs | |
GB931968A (en) | Improvements in or relating to control devices for controlling the flow of inhalation gas in respiratory apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |