Patent US3721255A successfully refreshed from Google Patents.
US3721255A
Expired / Lapsed
US
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Fluidic device
Assignee: Sanyo Electric Co Ltd
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Filing: 1970-08-20
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Granted: 1973-03-20
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Expires: 1990-08-20
Abstract
Abstract A fluidic device comprising an inlet passage for receiving a heat vaporizable supply liquid, a main power nozzle connected to the inlet passage, a pair of outlet passages communicated through an interaction chamber with the outlet of the power nozzle and at least one, preferably a pair of by-pass control passages for directing the main stream of liquid through the device to one or the other of the outlet passages. The by-pass control passage communicates the inlet passage directly with the interaction chamber by-passing the power nozzle. It includes heating means for vaporizing the flow of liquid therethrough. A small portion of the main liquid stream through the inlet passage of the device is diverted to the control bypass to be used as control flow. During passage through the control by-pass, the control liquid flow may be vaporized into gas flow by heating means. The vaporization of the control liquid causes a decrease in the mass flow of the control fluid which is effective to produce a transverse pressure differential across the main liquid stream through the interaction chamber sufficient to bias it for flow through the desired one of the two outlet passages. A refrigeration system includes a pair of evaporators, means for supplying a liquid refrigerant to the evaporators and a fluidic device of the type described. The fluidic device is provided between refrigerant supplying means and a pair of evaporators with its inlet passage connected to refrigerant supplying means for receiving the refrigerant and each of its two outlet passages connected to respective one of the evaporators. Heating means on the control by-passes are adapted to be operated in response to predetermined temperature conditions within the spaces where the evaporators are disposed so as to bias the flow of refrigerant through the fluidic device to one or the other of its outlet passages for supply into corresponding one of the evaporators.
Inventors
- 👤 S Sugaya
- 👤 F Suzuki
- 👤 F Naito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:30
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/02; F15C1/04; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2082; Y10T137/218; Y10T137/2191; Y10T137/2196; Y10T137/2229; Y10T137/224
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
182 words
A fluidic device comprising an inlet passage for supplying heat vaporizable liquid; a main nozzle connected to said inlet passage; a pair of outlet passages connecting through an interaction chamber to the outlet of said main nozzle; means for biasing the flow of liquid from said main nozzle toward a first of said outlet passages; at least one by-pass control passage extending from said inlet passage to a control port which is located near the outlet of said main nozzle and open in the wall of the interaction chamber; said by-pass control passage including a heater therein to vaporize the liquid flowing through the by-pass control passage and being so constructed that the flow resistance in said by-pass control passage is larger at the downstream portion than at the upper stream portion with respect to the lOcation of said heater whereby vaporization of the liquid flowing through said by-pass control passage causes a decrease in the mass flow in said by-pass control passage which is inturn effective to divert the flow of liquid from said main nozzle to the first outlet passage.
Claim 2
Dependent Claim
182 words
A fluidic device comprising an inlet passage for supplying heat vaporizable liquid; a main nozzle connected to said inlet passage; a pair of outlet passages connecting through an interaction chamber to the outlet of said main nozzle; means for biasing the flow of liquid from said main nozzle toward a first of said outlet passages; at least one by-pass control passage extending from said inlet passage to a control port which is located near the outlet of said main nozzle and open in the wall of the interaction chamber; said by-pass control passage including a heater therein to vaporize the liquid flowing through the by-pass control passage and being so constructed that the flow resistance in said by-pass control passage is larger at the downstream portion than at the upper stream portion with respect to the lOcation of said heater whereby vaporization of the liquid flowing through said by-pass control passage causes a decrease in the mass flow in said by-pass control passage which is inturn effective to divert the flow of liquid from said main nozzle to the first outlet passage.
Claim 3
Dependent Claim
22 words
A fluidic device as defined in claim 1, in which said downstream portion of said by-pass control passage comprises an elongated tube.
Claim 4
Dependent Claim
29 words
A fluidic device as defined in claim 1, in which the length of said downstream portion of said by-pass control passage is larger than that of said upperstream portion.
Claim 5
Dependent Claim
31 words
A fluidic device as defined in claim 1, in which the flow sectional area of said downstream portion of said by-pass control passage is smaller than that of said upperstream portion.
Claim 6
Dependent Claim
25 words
A fluid device as defined in claim 1 in which a source of heat vaporizable liquid is provided in fluid communication with said main nozzle.
Claim 7
Dependent Claim
21 words
A fluidic device as defined in claim 1 in which said downstream portion of said by-pass control passage has a constriction.
Claim 8
Dependent Claim
28 words
A fluidic device as defined in claim 6, in which said constriction is provided in the form of an orifice having a narrower diameter than the other portion.
Claim 9
Dependent Claim
19 words
A fluidic device as defined in claim 6, in which said constriction is located close to the said heater.
Claim 10
Dependent Claim
187 words
A fluidic device comprising an inlet passage for supplying heat vaporizable liquid; a main nozzle connected to said inlet passage; a pair of outlet passages connecting through an interaction chamber to the outlet of said main nozzle; means for biasing the flow of liquid from said main nozzle toward a first of said outlet passages; a pair of by-pass control passages extending from said inlet passage to the respective control ports which are located near the outlet of said main nozzle and opposedly open in the walls of the interaction chamber; at least one of said by-pass control passages including a heater therein to vaporize the liquid flowing through the by-pass control passage and being so constructed that the flow resistance in said by-pass control passage is larger at the downstream portion than at the upperstream portion with respect to the location of said heater whereby vaporization of the liquid flowing said by-pass control passage causes a decrease in the mass flow in said by-pass control passage which is in turn effective to divert the flow of liquid from said main nozzle to the second outlet passage.
Claim 11
Dependent Claim
187 words
A fluidic device comprising an inlet passage for supplying heat vaporizable liquid; a main nozzle connected to said inlet passage; a pair of outlet passages connecting through an interaction chamber to the outlet of said main nozzle; means for biasing the flow of liquid from said main nozzle toward a first of said outlet passages; a pair of by-pass control passages extending from said inlet passage to the respective control ports which are located near the outlet of said main nozzle and opposedly open in the walls of the interaction chamber; at least one of said by-pass control passages including a heater therein to vaporize the liquid flowing through the by-pass control passage and being so constructed that the flow resistance in said by-pass control passage is larger at the downstream portion than at the upperstream portion with respect to the location of said heater whereby vaporization of the liquid flowing said by-pass control passage causes a decrease in the mass flow in said by-pass control passage which is in turn effective to divert the flow of liquid from said main nozzle to the second outlet passage.
Claim 12
Dependent Claim
22 words
A fluid device as defined in claim 9 including a source of heat vaporizable liquid in fluid communication with said main nozzle.
Claim 13
Dependent Claim
193 words
A fluidic device comprising an inlet passage for supplying heat vaporizable liquid; a main nozzle connected to said inlet passage; first and second outlet passages connecting through an interaction chamber to the outlet of said main nozzle; a pair of by-pass control passages extending from said inlet passage to the respective control ports which are located near the outlet of said main nozzle and opposedly open at the walls of said first and second outlet passages, respectively, each of said by-pass control passages including a heater therein to vaporize the liquid flowing through the by-pass control passage and being so constructed that the flow resistance in said by-pass control passage is larger at the downstream portion than at the upper stream portion with respect to the location of said heater; and means for alternatively operating said heaters in said by-pass control passages whereby vaporization of the liquid flowing through said by-pass control passage causes a decrease in the mass flow in said by-pass control passage which is in turn effective to divert the flow of liquid to the selected outlet passage connected to the by-pass control passage in which said heater is operating.
Claim 14
Dependent Claim
193 words
A fluidic device comprising an inlet passage for supplying heat vaporizable liquid; a main nozzle connected to said inlet passage; first and second outlet passages connecting through an interaction chamber to the outlet of said main nozzle; a pair of by-pass control passages extending from said inlet passage to the respective control ports which are located near the outlet of said main nozzle and opposedly open at the walls of said first and second outlet passages, respectively, each of said by-pass control passages including a heater therein to vaporize the liquid flowing through the by-pass control passage and being so constructed that the flow resistance in said by-pass control passage is larger at the downstream portion than at the upper stream portion with respect to the location of said heater; and means for alternatively operating said heaters in said by-pass control passages whereby vaporization of the liquid flowing through said by-pass control passage causes a decrease in the mass flow in said by-pass control passage which is in turn effective to divert the flow of liquid to the selected outlet passage connected to the by-pass control passage in which said heater is operating.
Claim 15
Dependent Claim
22 words
A fluid device as defined in claim 11 including a source of heat vaporizable liquid in fluid communication with said main nozzle.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |