Patent US5036680A successfully refreshed from Google Patents.
US5036680A
Expired / Lapsed
US
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Refrigeration separator with means to meter quality of refrigerant to the evaporator
Assignee: Denso Corp
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Filing: 1990-06-14
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Granted: 1991-08-06
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Expires: 2010-06-14
Abstract
Abstract A refrigeration cycle apparatus includes a compressor, condenser, pressure-reducing device, evaporator, and gas-liquid separator between the pressure-reducing device and the evaporator. The gas-liquid separator separates a coolant from the pressure-reducing device into a liquid coolant and a gas coolant. A conduit between the gas-liquid separator and the evaporator supplies the separated liquid and gas coolant into the evaporator at a predetermined rate for controlling the quality of the coolant downstream of the gas-liquid separator, thereby attaining a super-cool condition of the coolant at the outlet portion of the condenser.
Inventors
- 👤 Kenichi Fujiwara
- 👤 Kazutoshi Nishizawa
- 👤 Akira Iwashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:23
CPC Classifications
F; F25; F25B; F25B40/00; F25B40/02; F25B43/00; F25B43/006; F25B2400/00; F25B2400/05; F25B2400/052; F25B2400/054
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
142 words
A refrigeration cycle apparatus comprising: a compressor for compressing a gas coolant to a high temperature and high pressurized condition; a condenser downstream of said compressor for changing said gas coolant to a high temperature and high pressurized liquid coolant; a pressure reducing device downstream of said condenser for reducing the pressure of said high temperature and high pressurized liquid coolant; an evaporator downstream of said pressure-reducing device for evaporating said pressure-reduced coolant; a gas-liquid separator between said pressure-reducing device and said evaporator for separating the coolant downstream of said pressure-reducing device into a liquid coolant and gas coolant; and conduit means between said gas-liquid separator and said evaporator for supplying the liquid coolant and the gas coolant separated by said gas-liquid separator to said evaporator at a predetermined rate so as to control a coolant quality downstream of said gas-liquid separator.
Claim 2
Dependent Claim
142 words
A refrigeration cycle apparatus comprising: a compressor for compressing a gas coolant to a high temperature and high pressurized condition; a condenser downstream of said compressor for changing said gas coolant to a high temperature and high pressurized liquid coolant; a pressure reducing device downstream of said condenser for reducing the pressure of said high temperature and high pressurized liquid coolant; an evaporator downstream of said pressure-reducing device for evaporating said pressure-reduced coolant; a gas-liquid separator between said pressure-reducing device and said evaporator for separating the coolant downstream of said pressure-reducing device into a liquid coolant and gas coolant; and conduit means between said gas-liquid separator and said evaporator for supplying the liquid coolant and the gas coolant separated by said gas-liquid separator to said evaporator at a predetermined rate so as to control a coolant quality downstream of said gas-liquid separator.
Claim 3
Dependent Claim
62 words
A refrigerant cycle apparatus according to claim 1, wherein said conduit means includes a first conduit for discharging the liquid coolant, a second conduit for discharging the gas coolant and means for determining said predetermined rate due to a flow rate ratio of the liquid coolant and the gas coolant in accordance with flow rate resistances in said first and second conduits.
Claim 4
Dependent Claim
22 words
A refrigerant cycle apparatus according to claim 2, wherein said second conduit is connected at a predetermined position downstream of said evaporator.
Claim 5
Dependent Claim
25 words
A refrigerant cycle apparatus according to claim 2, wherein said second conduit is connected with a coolant conduit provided between said evaporator and said compressor.
Claim 6
Dependent Claim
30 words
A refrigerant apparatus according to claim 2, wherein said first conduit includes pressure-loss means having two serial orifices for adding a pressure-loss in the liquid coolant flowing into said evaporator.
Claim 7
Dependent Claim
48 words
A refrigeration apparatus according to claim 2, wherein said first conduit includes pressure-loss means for adding a pressure-loss in the liquid coolant flowing into said evaporator and for changing said pressure-loss in response to a degree of a super-heat of the coolant at an outlet of said evaporators.
Claim 8
Dependent Claim
39 words
A refrigeration apparatus according to claim 1, wherein said pressure reducing means includes an expansion valve which controls a flow rate of the coolant flowing therethrough in response to a coolant temperature in a discharge side of said compressor.
Claim 9
Dependent Claim
126 words
A refrigeration cycle apparatus comprising: a compressor for compressing a gas coolant to a high temperature and high pressurized condition; a condenser downstream of said compressor for changing said gas coolant to a high temperature and high pressurized liquid coolant; a pressure-reducing device downstream of said condenser for reducing the pressure of said high temperature and high pressurized liquid coolant; an evaporator downstream of said pressure-reducing device for evaporating said pressure-reducing coolant; gas-liquid separating means for separating the coolant downstream of said pressure-reducing device into a liquid coolant and a gas coolant; and coolant quality control means for supplying the liquid coolant and the gas coolant separator by said gas-liquid separating means to said evaporator at a predetermined rate so as to control a coolant quality.
Claim 10
Dependent Claim
126 words
A refrigeration cycle apparatus comprising: a compressor for compressing a gas coolant to a high temperature and high pressurized condition; a condenser downstream of said compressor for changing said gas coolant to a high temperature and high pressurized liquid coolant; a pressure-reducing device downstream of said condenser for reducing the pressure of said high temperature and high pressurized liquid coolant; an evaporator downstream of said pressure-reducing device for evaporating said pressure-reducing coolant; gas-liquid separating means for separating the coolant downstream of said pressure-reducing device into a liquid coolant and a gas coolant; and coolant quality control means for supplying the liquid coolant and the gas coolant separator by said gas-liquid separating means to said evaporator at a predetermined rate so as to control a coolant quality.
Claim 11
Dependent Claim
58 words
A refrigeration cycle apparatus according to claim 8, wherein said coolant quality control means includes flow-rate determination means for determining the flow rate of the liquid coolant and the gas coolant separated by said gas-liquid separating means so that a ratio of the flow rate of the liquid coolant to that of the gas coolant is substantially 7:3.
Claim 12
Dependent Claim
27 words
A refrigeration cycle apparatus according to claim 9, wherein said flow-rate determination means includes pressure-loss means for adding a pressure-loss in the liquid and the gas coolant.
References Cited (Backward Citations)
US4179898A
Cited
US4986082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-05 | 1995-02-04 | 1995-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-05 | 1999-02-04 | 1999-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-05 | 2003-02-04 | 2003-08-06 | $7700.00 | Window Closed / Lapsed |