Patent US3608625A successfully refreshed from Google Patents.
US3608625A
Expired / Lapsed
US
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Closed loop heat pump systems
Assignee: MERCANTILE TEXAS CREDIT Corp
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Filing: 1969-10-28
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Granted: 1971-09-28
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Expires: 1989-10-28
Abstract
Abstract This disclosure relates to a closed loop heat pump system for use in multizone buildings in which the closed loop is connected through a plurality of individual zone units. The zone units are heat pumps of the type which include reversible refrigerating apparatus. The closed loop circulates a heat exchange media through the individual zone units wherein heat may be absorbed or rejected and maintains a predetermined temperature level by adding or removing heat from the heat exchange media at a temperature control center or storage vessel equipped to heat or cool the heat exchange media of the closed loop.
Inventors
- 👤 Garland L Kendrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:35
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/16; F24; F24D; F24D11/00; F24D11/02; F24D11/0214; F24F; F24F3/00; F24F3/001; F24F5/00; F24F5/0003; F25; F25B; F25B13/00; F25B2400/00; F25B2400/06; Y; Y02; Y02B; Y02B30/00; Y02B30/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
279 words
In a heat pump system having a plurality of heat pumps positioned in various zones to be selectively heated or cooled, the combination of: a. a heat pump closed loop having a heat exchange media continuously circulating therein and passing through each of the heat pumps, b. a storage vessel connected in the heat pump closed loop, c. the storage vessel having an upper portion therein to receive the heat exchange media from the heat pump closed loop and a lower portion therein, defining a reservoir from which the heat exchange media is returned to the heat pump closed loop, d. a cooling vessel of the tube and shell type formed integrally within the upper portion of the storage vessel, e. a cooling water loop for circulating cooling water is formed in the heat pump system separate from the heat pump closed loop, f. the cooling water loop includes the cooling vessel, a cooling tower, a circulating pump and connecting conduit means therebetween, g. the tubes of the cooling vessel having the cooling water pass therethrough, h. the shell of the cooling vessel having the heat exchange media pass therethrough in noncontacting heat exchange relationship with the cooling water in said tubes, i. heating means including a plurality of immersed electric heating elements connected within the lower reservoir portion of the storage vessel remote from the cooling vessel, and j. control means mounted upon the storage vessel operatively to control the cooling means and the heating means to maintain the temperature of the heat exchange media within a predetermined range by selectively circulating the cooling water through the cooling vessel, or actuating one or more of the heating elements.
Claim 2
Dependent Claim
279 words
In a heat pump system having a plurality of heat pumps positioned in various zones to be selectively heated or cooled, the combination of: a. a heat pump closed loop having a heat exchange media continuously circulating therein and passing through each of the heat pumps, b. a storage vessel connected in the heat pump closed loop, c. the storage vessel having an upper portion therein to receive the heat exchange media from the heat pump closed loop and a lower portion therein, defining a reservoir from which the heat exchange media is returned to the heat pump closed loop, d. a cooling vessel of the tube and shell type formed integrally within the upper portion of the storage vessel, e. a cooling water loop for circulating cooling water is formed in the heat pump system separate from the heat pump closed loop, f. the cooling water loop includes the cooling vessel, a cooling tower, a circulating pump and connecting conduit means therebetween, g. the tubes of the cooling vessel having the cooling water pass therethrough, h. the shell of the cooling vessel having the heat exchange media pass therethrough in noncontacting heat exchange relationship with the cooling water in said tubes, i. heating means including a plurality of immersed electric heating elements connected within the lower reservoir portion of the storage vessel remote from the cooling vessel, and j. control means mounted upon the storage vessel operatively to control the cooling means and the heating means to maintain the temperature of the heat exchange media within a predetermined range by selectively circulating the cooling water through the cooling vessel, or actuating one or more of the heating elements.
Claim 3
Dependent Claim
125 words
The combination claimed in claim 1 wherein: a. the cooling vessel has a casing with a header at each end thereof disposed externally of the storage vessel and each of the headers connect into the cooling water loop, b. the tubes of the cooling vessel connecting one header with the other header, c. the casing has a shell through which passes the heat exchange media, d. the shell has an external connection with the heat pump closed loop to receive heat exchange media in counterflow relationship with the cooling water passing within the tubes, and e. the shell has an aperture formed at the other end thereof within the upper portion of the storage vessel to discharge the heat exchange media into said upper portion.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |