US3828566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry adsorption refrigeration system
Assignee: Individual
•
Filing: 1973-02-05
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Granted: 1974-08-13
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Expires: 1993-02-05
Abstract
Abstract Dry adsorption refrigeration apparatus includes a plurality of compression/heating units packed with silica gel, a condenser, an expansion valve and an evaporator, which apparatus can utilize waste energy, such as internal combustion exhaust energy, to excite and operate the refrigeration cycle. The apparatus operates at temperatures and pressures approaching the critical values for the refrigerant, thereby allowing condensation to take place at ambient temperatures by natural convective currents, i.e., without fans or cooling liquids. Convective cooling can be enhanced by arranging the apparatus in a generally conical configuration wherein the condensing coils are disposed adjacent the base of the cone and the compression/heating units are situated above the condenser coils such that ambient air enters the bottom of the cone, flows upward over the coils and units and exits through a flue opening in the apex of the cone.
Inventors
- 👤 C Wetzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:24
CPC Classifications
F; F25; F25B; F25B27/00; F25B27/02; F25B17/00; F25B17/08; F25B17/083; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02A30/274; Y02B; Y02B30/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
121 words
Dry adsorption refrigeration apparatus including a liquid refrigerant therein comprising: a. a plurality of adsorber units, each unit including a charge of adsorbent material therein; b. heating means associated with each said unit for intermittent application of heat thereto; c. a condenser connected to the outlet of said units, said condenser cooled by convective ambient aIr flow thereover; d. a conical housing for said adsorber units and said condenser, said housing having openings at its base whereby ambient air enters said housing and openings adjacent its apex whereby heated air exits said housing; e. evaporator means connected to the condenser outlet to extract heat from the space to be refrigerated; and f. means for returning said refrigerant to said adsorber units.
Claim 2
Dependent Claim
121 words
Dry adsorption refrigeration apparatus including a liquid refrigerant therein comprising: a. a plurality of adsorber units, each unit including a charge of adsorbent material therein; b. heating means associated with each said unit for intermittent application of heat thereto; c. a condenser connected to the outlet of said units, said condenser cooled by convective ambient aIr flow thereover; d. a conical housing for said adsorber units and said condenser, said housing having openings at its base whereby ambient air enters said housing and openings adjacent its apex whereby heated air exits said housing; e. evaporator means connected to the condenser outlet to extract heat from the space to be refrigerated; and f. means for returning said refrigerant to said adsorber units.
Claim 3
Dependent Claim
17 words
Apparatus as claimed in claim 1 further including means on said units for sensing the temperature therein.
Claim 4
Dependent Claim
39 words
Apparatus, as claimed in claim 2, wherein said sensing means on said units are associated with said heating means and further including remote means for intermittently operating said heating means in response to a signal from said sensing means.
Claim 5
Dependent Claim
18 words
Apparatus, as claimed in claim 1, wherein said evaporator means includes an expansion valve and an evaporator coil.
Claim 6
Dependent Claim
18 words
Apparatus, as claimed in claim 1, wherein said heating means comprises pipe means through which heated material passes.
Claim 7
Dependent Claim
34 words
Apparatus, as claimed in claim 5, wherein said adsorber unit comprises a housing, said pipe means extends through said housing and said adsorbent material is dispersed within said housing and without said pipe means.
Claim 8
Dependent Claim
40 words
Apparatus, as claimed in claim 6, wherein said adsorber units comprise a generally cylindrical housing, said pipe means extends longitudinally within said housing, and said adsorbent material is dispersed in the annular space within said housing surrounding said pipe means.
Claim 9
Dependent Claim
14 words
Apparatus, as claimed in claim 7, wherein said adsorbent material is granulated silica gel.
Claim 10
Dependent Claim
31 words
Apparatus, as claimed in claim 7, wherein said pipe means includes a plurality of fins extending therefrom within said housing at spaced apart intervals along the length of said pipe means.
Claim 11
Dependent Claim
74 words
Apparatus, as claimed in claim 1, wherein said condenser is disposed adjacent the base of said conical housing and said adsorber units are disposed between said condenser and said apex, whereby the upward flow of heated air adjacent said units creates a draft flow of ambient air into said housing through the openings at said base, upward over said condenser and said units, and out of said housing through the openings adjacent said apex.
Claim 12
Dependent Claim
21 words
Apparatus, as claimed in claim 10, including supports for said housing along its base to space said housing from the ground.
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |