US3857253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unitary air cooled centrifugal refrigeration water chiller
Assignee: Trane US Inc
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Filing: 1974-02-11
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Granted: 1974-12-31
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Expires: 1994-02-11
Abstract
Abstract A unitary air cooled centrifugal refrigeration water chiller is disclosed. The longitudinal extent of the water chiller heat exchanger extends transversely to the longitudinal extent of the condenser and unit subframe thereof.
Inventors
- 👤 L Burgett
- 👤 C Ware
- 👤 D Sanborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:18
CPC Classifications
F; F25; F25B; F25B1/00; F25B1/04; F25B1/053; F25B39/00; F25B39/04; F28; F28B; F28B1/00; F28B1/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
399 words
A portable self-contained unitary water chiller machine comprising: an elongated air cooled heat exchanger having a generally U-shaped vertical cross section normal to the longitudinal axis thereof; each of the leg and bottom portions of said U-shaped section including a plurality of parallel spaced horizontally conducting refrigerant tubes extending longitudinally from one end to the other end thereof through a plurality of longitudinally and horizontally spaced heat exchanger fins; an elongated portable subframe disposed beneath said air cooled heat exchanger having a portion extending longitudinally beyond one end of said air cooled heat exchanger; first elongated header means at said one end of said air cooled heat exchanger extending transversely to said portable subframe for conducting refrigerant with respect to one longitudinal end of said tubes; second header means at the other end of said air cooled heat exchanger extending transversely to said portable subframe for conducting condensed refrigerant with respect to the other longitudinal end of said tubes; means for supporting said air cooled heat exchanger in spaced relation above said subframe to provide a space for passing air above said subframe below said bottom portion of said U-shaped section; a plurality of longitudinally spaced fan means disposed above said bottom portion and intermediate said leg portions of said U-shaped section for drawing air through each of said bottom and leg portions; an elongated shell-and-tube refrigerant evaporator heat exchanger disposed entirely at said one end of said air cooled heat exchanger supported transversely on said portion of said elongated portable subframe extending beyond said one end of said air cooled heat exchanger; a centrifugal refrigerant compressor at said one end of said air cooled heat exchanger supported by said portion of said portable subframe extending beyond said one end of said air cooled heat exchanger; first conduit means for conducting refrigerant from the shell of said evaporator heat exchanger to the inlet of said compressor; second conduit means for conducting refrigerant gas from said compressor longitudinally of said portable subframe to said first header means at said one end of said air cooled heat exchanger; third conduit means for conducting condensed refrigerant from said second header at the other end of said air cooled heat exchanger longitudinally of said portable subframe to said evaporator heat exchanger; and means for conducting water to be chilled transversely of said portable subframe within the tubes of said shell-and-tube evaporator heat exchanger.
Claim 2
Dependent Claim
399 words
A portable self-contained unitary water chiller machine comprising: an elongated air cooled heat exchanger having a generally U-shaped vertical cross section normal to the longitudinal axis thereof; each of the leg and bottom portions of said U-shaped section including a plurality of parallel spaced horizontally conducting refrigerant tubes extending longitudinally from one end to the other end thereof through a plurality of longitudinally and horizontally spaced heat exchanger fins; an elongated portable subframe disposed beneath said air cooled heat exchanger having a portion extending longitudinally beyond one end of said air cooled heat exchanger; first elongated header means at said one end of said air cooled heat exchanger extending transversely to said portable subframe for conducting refrigerant with respect to one longitudinal end of said tubes; second header means at the other end of said air cooled heat exchanger extending transversely to said portable subframe for conducting condensed refrigerant with respect to the other longitudinal end of said tubes; means for supporting said air cooled heat exchanger in spaced relation above said subframe to provide a space for passing air above said subframe below said bottom portion of said U-shaped section; a plurality of longitudinally spaced fan means disposed above said bottom portion and intermediate said leg portions of said U-shaped section for drawing air through each of said bottom and leg portions; an elongated shell-and-tube refrigerant evaporator heat exchanger disposed entirely at said one end of said air cooled heat exchanger supported transversely on said portion of said elongated portable subframe extending beyond said one end of said air cooled heat exchanger; a centrifugal refrigerant compressor at said one end of said air cooled heat exchanger supported by said portion of said portable subframe extending beyond said one end of said air cooled heat exchanger; first conduit means for conducting refrigerant from the shell of said evaporator heat exchanger to the inlet of said compressor; second conduit means for conducting refrigerant gas from said compressor longitudinally of said portable subframe to said first header means at said one end of said air cooled heat exchanger; third conduit means for conducting condensed refrigerant from said second header at the other end of said air cooled heat exchanger longitudinally of said portable subframe to said evaporator heat exchanger; and means for conducting water to be chilled transversely of said portable subframe within the tubes of said shell-and-tube evaporator heat exchanger.
Claim 3
Dependent Claim
27 words
The apparatus as defined by claim 1, wherein said second conduit means includes tubes of the bottom portion of said U-shaped section which function as a subcooler.
Claim 4
Dependent Claim
38 words
The apparatus as defined by claim 1 including a weather resistant shelter supported by said subframe entirely at one longitudinal end of said air cooled heat exchanger and generally extending about said compressor and said evaporator heat exchanger.
Claim 5
Dependent Claim
48 words
The apparatus as defined by claim 3 wherein said shelter has a first wall abutting said one end of said air cooled heat exchanger and a second wall opposite from said first wall, said evaporator heat exchanger being substantially closer to said second wall than said first wall.
Claim 6
Dependent Claim
26 words
The apparatus as defined by claim 4 wherein the length of said heat exchanger is greater than the spatial distance between said first and second walls.
Claim 7
Dependent Claim
38 words
The apparatus as defiNed by claim 1 including thermal insulation means for said shell and tube evaporator heat exchanger wherein the primary insulation for said shell and tube evaporator heat exchanger is at the walls of said shelter.
Claim 8
Dependent Claim
35 words
The apparatus as defined by claim 6 including a drain pan disposed below said shell-and-tube evaporator heat exchanger to collect atmospheric condensate formed within said shelter on the external surface of said shell-and-tube heat exchanger.
Claim 9
Dependent Claim
27 words
The apparatus as defined by claim 1 wherein the axis of rotation of said compressor is transverse to the longutidinal axis of said air cooled heat exchanger.
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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |