US4322952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerating apparatus
Assignee: Toshiba Corp
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Filing: 1980-05-27
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Granted: 1982-04-06
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Expires: 2000-05-27
Abstract
Abstract A refrigerating apparatus with at least two evaporators which are controlled at different temperatures by a refrigerant, a vapor bubble pump for pumping the refrigerant, a vapor bubble pump for pumping the refrigerant and a delayer located in the conduit path in which the refrigerant flows when said vapor bubble pump is not in operation for delaying the refrigerant flow therethrough.
Inventors
- 👤 Noboru Nakagawa
- 👤 Toshiyuki Oonishi
- 👤 Masato Tsutsumi
- 👤 Akira Kawamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:34
CPC Classifications
F; F25; F25B; F25B5/00; F25B5/04; F25B41/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
105 words
Refrigerating apparatus comprising: a compressor for compressing a refrigerant, at least two evaporators which are controlled to a different temperature by evaporation of said refrigerant, a tank for storing said refrigerant, a plurality of conduits for conducting said refrigerant to said compressor, said evaporators and said tank, a vapor bubble pump for pumping said refrigerant and for controlling the flow of said refrigerant to one of said evaporators, and an accumulator which is located on the substantially same liquid level with said tank for delaying the flow of said refrigerant to the other of said evaporators when said vapor bubble pump begins pumping action thereof.
Claim 2
Dependent Claim
105 words
Refrigerating apparatus comprising: a compressor for compressing a refrigerant, at least two evaporators which are controlled to a different temperature by evaporation of said refrigerant, a tank for storing said refrigerant, a plurality of conduits for conducting said refrigerant to said compressor, said evaporators and said tank, a vapor bubble pump for pumping said refrigerant and for controlling the flow of said refrigerant to one of said evaporators, and an accumulator which is located on the substantially same liquid level with said tank for delaying the flow of said refrigerant to the other of said evaporators when said vapor bubble pump begins pumping action thereof.
Claim 3
Dependent Claim
17 words
Apparatus as in claim 1, wherein said accumulator has a 5 cc to 20 cc in capacity.
Claim 4
Dependent Claim
21 words
Apparatus as in claim 1 or 2, further includes a conduit for equalizing the pressure of said tank and said accumulator.
Claim 5
Dependent Claim
24 words
Apparatus as in claim 1, wherein said one evaporator is for a freezer compartment and said the other evaporator is for a refrigerator compartment.
Claim 6
Dependent Claim
125 words
Refrigerating apparatus comprising: a compressor for compressing a refrigerant, at least two evaporators which are controlled to a different temperature by evaporation of said refrigerant, a tank for storing said refrigerant, a plurality of conduits for conducting said refrigerant to said compressor, said evaporators and said tank, a vapor bubble pump for pumping said refrigerant and for controlling the flow of said refrigerant to one of said evaporator, and a conduit connecting said tank to the other of said evaporators having a larger resistance to flow than that of the conduit which conducts said refrigerant to said vapor bubble pump from said tank for delaying the flow of said refrigerant to the other of said evaporators when said vapor bubble pump begins pumping action thereof.
Claim 7
Dependent Claim
125 words
Refrigerating apparatus comprising: a compressor for compressing a refrigerant, at least two evaporators which are controlled to a different temperature by evaporation of said refrigerant, a tank for storing said refrigerant, a plurality of conduits for conducting said refrigerant to said compressor, said evaporators and said tank, a vapor bubble pump for pumping said refrigerant and for controlling the flow of said refrigerant to one of said evaporator, and a conduit connecting said tank to the other of said evaporators having a larger resistance to flow than that of the conduit which conducts said refrigerant to said vapor bubble pump from said tank for delaying the flow of said refrigerant to the other of said evaporators when said vapor bubble pump begins pumping action thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-05 | 1985-10-05 | 1986-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-05 | 1989-10-05 | 1990-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-05 | 1993-10-05 | 1994-04-06 | $7700.00 | Window Closed / Lapsed |