US3864938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant flow control device
Assignee: Carrier Corp
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Filing: 1973-09-25
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Granted: 1975-02-11
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Expires: 1993-09-25
Abstract
Abstract A device for controlling the flow of refrigerant to the circuits of a multi-circuit evaporator in a refrigeration system, comprising an orifice plate having a refrigerant expansion orifice and a distributor plate having passages into which interchangeable metering jets are inserted. Refrigerant flows first through the expansion orifice and experiences a first pressure drop, and then through the metering jets which complete the expansion of the refrigerant. Refrigerant feedlines lead from the distributor plate passages to each of the evaporator circuits.
Inventors
- 👤 Jr Richmond S Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:31
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/026; F28F9/0282; F25; F25B; F25B41/00; F25B41/30; F25B41/40; F25B41/42; F25B41/45; F25B39/00; F25B39/02; F25B39/028; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0396; Y10T137/8593; Y10T137/85938
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
108 words
A refrigerant flow control device for controlling the flow of reFrigerant to a multi-circuit evaporator in a refrigeration system, said device comprising: a distributor plate including refrigerant passages for passing refrigerant to feedlines leading to each of the circuits in the evaporators; metering jets having tubular means extending into said refrigerant passages, said tubular means being dimensioned to expand refrigerant flowing therethrough according to the load on the particular circuit receiving refrigerant from the respective metering jets; a casing; and an orifice plate having orifice means dimensioned to expand refrigerant flowing therethrough; said orifice plate and said distributor plate being mounted in spaced parallel relation in said casing.
Claim 2
Dependent Claim
108 words
A refrigerant flow control device for controlling the flow of reFrigerant to a multi-circuit evaporator in a refrigeration system, said device comprising: a distributor plate including refrigerant passages for passing refrigerant to feedlines leading to each of the circuits in the evaporators; metering jets having tubular means extending into said refrigerant passages, said tubular means being dimensioned to expand refrigerant flowing therethrough according to the load on the particular circuit receiving refrigerant from the respective metering jets; a casing; and an orifice plate having orifice means dimensioned to expand refrigerant flowing therethrough; said orifice plate and said distributor plate being mounted in spaced parallel relation in said casing.
Claim 3
Dependent Claim
20 words
A refrigerant flow control device according to claim 1 wherein said metering jets are removably inserted in said refrigerant passages.
Claim 4
Dependent Claim
41 words
A refrigerant flow control device according to claim 1 wherein said refrigerant passages in said distributor plate are configured to receive said metering jets and feedlines leading to each of the evaporator circuits, in a telescoping relationship to the tubular means.
Claim 5
Dependent Claim
44 words
A refrigerant flow control device according to claim 1 wherein said metering jets each further include a cap for abutting against said distributor plate when the tubular means is inserted into a passage in said distributor for locating said metering jet in the passage.
Claim 6
Dependent Claim
31 words
The invention according to claim 1 wherein the tubular means of at least one of said metering jets is dimensioned differently from the tubular means of others of said metering jets.
References Cited (Backward Citations)
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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) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |