US3734174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger for compressed air
Assignee: Kellogg American Inc
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Filing: 1970-09-16
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Granted: 1973-05-22
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Expires: 1990-09-16
Abstract
Abstract A heat exchanging structure for an evaporator and the like comprises a plurality of sheath tubes and a plurality of inner tubes inserted respectively and spacedly within the sheath tubes. A flow arrangement connects one group of the group of sheath tubes and the group of inner tubes in series and at least some of the other group of tubes in parallel. In another such structure, inner and outer tubes are mounted in tube-in-tube relation, and at least one of the tubes include heat transfer spines.
Inventors
- 👤 A Bloxham
- 👤 H Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:36
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/16; F28; F28D; F28D7/00; F28D7/10; F28D7/106; F28F; F28F13/00; F28F13/06; F28F9/00; F28F9/26
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
279 words
A heat exchanger comprising a plurality of sheath tubes, a plurality of inner tubes inserted respectively and spacedly within said sheath tubes, means for supporting said tubes within an elongated tank therefor, plenum chamber means adjacent each end of said tank and communicating with the ends of said sheath tubes, conduit means disposed within at least one of said plenum chamber means and coupled to adjacent ends of said inner tubes for connecting at least some of said inner tubes in series, first flow circulating means coupled to said plenum chamber means for circulating a first heat exchanging fluid through said sheath tubes exteriorly of said inner tubes, second flow circulating means extending throUgh at least one of said plenum chamber means for sealed connection to the adjacent ends of said inner tubes for circulating a second heat exchanging fluid through said inner tubes, said plenum chamber means including a pair of baffles spacedly mounted adjacent the ends of said tank so as to form a plenum chamber at each end of said tank, some of said sheath tubes being joined adjacent their ends to said flow baffles respectively so as to communicate with said plenum chambers respectively, means for mounting said sheath tubes in generally parallel spaced relation within said tank, and the remainder of said sheath tubes being joined adjacent their ends to one of said baffles so as to communicate with the associated plenum chamber and with some of said sheath tubes, the opposite ends of said remainder sheath tubes terminating short of the other of said baffles so as to communicate with flow spaces extending between and around said sheath tubes and between said baffles.
Claim 2
Dependent Claim
279 words
A heat exchanger comprising a plurality of sheath tubes, a plurality of inner tubes inserted respectively and spacedly within said sheath tubes, means for supporting said tubes within an elongated tank therefor, plenum chamber means adjacent each end of said tank and communicating with the ends of said sheath tubes, conduit means disposed within at least one of said plenum chamber means and coupled to adjacent ends of said inner tubes for connecting at least some of said inner tubes in series, first flow circulating means coupled to said plenum chamber means for circulating a first heat exchanging fluid through said sheath tubes exteriorly of said inner tubes, second flow circulating means extending throUgh at least one of said plenum chamber means for sealed connection to the adjacent ends of said inner tubes for circulating a second heat exchanging fluid through said inner tubes, said plenum chamber means including a pair of baffles spacedly mounted adjacent the ends of said tank so as to form a plenum chamber at each end of said tank, some of said sheath tubes being joined adjacent their ends to said flow baffles respectively so as to communicate with said plenum chambers respectively, means for mounting said sheath tubes in generally parallel spaced relation within said tank, and the remainder of said sheath tubes being joined adjacent their ends to one of said baffles so as to communicate with the associated plenum chamber and with some of said sheath tubes, the opposite ends of said remainder sheath tubes terminating short of the other of said baffles so as to communicate with flow spaces extending between and around said sheath tubes and between said baffles.
Claim 3
Dependent Claim
258 words
A heat exchanger comprising a plurality of sheath tubes, a plurality of inner tubes inserted respectively and spacedly within said sheath tubes, means for supporting said tubes within an elongated tank therefor, plenum chamber means adjacent each end of said tank and communicating with the ends of said sheath tubes, conduit means disposed within at least one of said plenum chamber means and coupled to adjacent ends of said inner tubes for connecting at least some of said inner tubes in series, first flow circulating means coupled to said plenum chamber means for circulating a first heat exchanging fluid through said sheath tubes exteriorly of said inner tubes, second flow circulating means extending through at least one of said plenum chamber means for sealed connection to the adjacent ends of said inner tubes for circulating a second heat exchanging fluid through said inner tubes, and an intermediate plenum chamber spaced along the length of said tank and separated from said end plenum chamber means by a pair of flow baffles spaced from the ends of said tank respectively, said sheath tubes being divided into groups of longer and shorter sheath tubes, said longer sheath tubes having their ends joined to said baffles respectively in communication with said end plenum chamber means respectively, said shorter sheath tubes having their one ends joined to one of said baffles in communication with the adjacent one of said end plenum chamber means and having their other ends terminating short of the other of said baffles in communication with said intermediate plenum chamber.
Claim 4
Dependent Claim
258 words
A heat exchanger comprising a plurality of sheath tubes, a plurality of inner tubes inserted respectively and spacedly within said sheath tubes, means for supporting said tubes within an elongated tank therefor, plenum chamber means adjacent each end of said tank and communicating with the ends of said sheath tubes, conduit means disposed within at least one of said plenum chamber means and coupled to adjacent ends of said inner tubes for connecting at least some of said inner tubes in series, first flow circulating means coupled to said plenum chamber means for circulating a first heat exchanging fluid through said sheath tubes exteriorly of said inner tubes, second flow circulating means extending through at least one of said plenum chamber means for sealed connection to the adjacent ends of said inner tubes for circulating a second heat exchanging fluid through said inner tubes, and an intermediate plenum chamber spaced along the length of said tank and separated from said end plenum chamber means by a pair of flow baffles spaced from the ends of said tank respectively, said sheath tubes being divided into groups of longer and shorter sheath tubes, said longer sheath tubes having their ends joined to said baffles respectively in communication with said end plenum chamber means respectively, said shorter sheath tubes having their one ends joined to one of said baffles in communication with the adjacent one of said end plenum chamber means and having their other ends terminating short of the other of said baffles in communication with said intermediate plenum chamber.
Claim 5
Dependent Claim
42 words
The combination according to claim 2 wherein bracket means are joined to said shorter tubes adjacent said other ends thereof and to an adjacent wall surface of at least one of said longer sheath tubes for supporting the said shorter sheath tubes.
Claim 6
Dependent Claim
66 words
The combination according to claim 3 wherein said intermediate plenum chamber is further defined by the adjacent wall portions of said tank and by the outer wall surfaces of said longer and said shorter sheath tubes, and inlet and outlet means for said sheath tubes are coupled to said tank in communication with the other of said end plena and with said intermediate plenum chamber respectively.
Claim 7
Dependent Claim
228 words
The combination according to claim 2 wherein said first circulating means are extended into said tank to an opening in one of said baffles in communication with said intermediate plena and with said shorter sheath tube other end. 6. A heat exchanger comprising a plurality of sheath tubes, a plurality of inner tubes inserted respectively and spacedly within said sheath tubes, means for supporting said tubes within an elongated tank therefor, plenum chamber means adjacent each end of said tank and communicating with the ends of said sheath tubes, conduit means disposed entirely within at least one of said plenum chamber means and coupled to adjacent ends of said inner tubes for connecting some of said inner tubes in series with the remainder thereof, first flow circulating meAns coupled to said plenum chamber means for circulating a first heat exchanging fluid through said plenum chamber means and through said sheath tubes exteriorly of said inner tubes and of said conduit means along the entire length thereof, at least said one chamber means being shaped to provide a flow of said first fluid substantially transversely of said conduit means, and second flow circulating means extending through the other of said plenum chamber means for sealed connection to the adjacent ends of said inner tubes for circulating a second heat exchanging fluid through said inner tubes and said conduit means.
Claim 8
Dependent Claim
159 words
Heat exchanger structure including an elongated tank having first and second groups of heat exchanging tubes mounted therein, one of said groups of tubes being sheathed respectively within the other, said plenum chamber means including end plena and an intermediate plenum spaced along the length of said tank, said first tubes including a number of longer tubes disposed with their ends communicating respectively with said end plena and a number of shorter tubes disposed with their one ends in communication with one of said end plena and their other ends in communication with said intermediate plenum, first flow circulating means coupled to said plenum chamber means for circulating a first heat exchanging fluid through said sheath tubes exteriorly of said inner tubes, and second flow circulating means extending through at least one of said plenum chamber means for sealed connection to the adjacent ends of said inner tubes for circulating a second heat exchanging fluid through said inner tubes.
Claim 9
Dependent Claim
159 words
Heat exchanger structure including an elongated tank having first and second groups of heat exchanging tubes mounted therein, one of said groups of tubes being sheathed respectively within the other, said plenum chamber means including end plena and an intermediate plenum spaced along the length of said tank, said first tubes including a number of longer tubes disposed with their ends communicating respectively with said end plena and a number of shorter tubes disposed with their one ends in communication with one of said end plena and their other ends in communication with said intermediate plenum, first flow circulating means coupled to said plenum chamber means for circulating a first heat exchanging fluid through said sheath tubes exteriorly of said inner tubes, and second flow circulating means extending through at least one of said plenum chamber means for sealed connection to the adjacent ends of said inner tubes for circulating a second heat exchanging fluid through said inner tubes.
Claim 10
Dependent Claim
217 words
A heat exchanger comprising a first group of heat exchanging tubes, a second group of heat exchanging tubes positioned respectively within said first tubes, a first plenum structure coupled to the adjacent ends of said first tubes in communication therewith, a second plenum structure coupled to the opposite ends of said first tubes in communication therewith, conduit means supported in at least one of said plenum structures and connected respectively to the adjacent ends of said second tubes in communication therewith for coupling at least some of said second tubes in series, first circulating means coupled to said plenum structures for circulating a first heat exchanging fluid therethrough and through said first tubes, and second circulating means coupled to said second tubes for circulating a second heat exchanging fluid therethrough, said heat exchanger including a tank having said tubes mounted therein, said conduit means and said plenum structures being mounted within said tank, and an intermediate plenum within said tank and disposed generally between said first and said second plenum structures, said sheath tubes including at least one longer tube disposed with its ends communicating respectively with said plenum structures and a shorter tube disposed with its one end in communication with one of said plenum structures and its other end in communication with said intermediate plenum.
Claim 11
Dependent Claim
217 words
A heat exchanger comprising a first group of heat exchanging tubes, a second group of heat exchanging tubes positioned respectively within said first tubes, a first plenum structure coupled to the adjacent ends of said first tubes in communication therewith, a second plenum structure coupled to the opposite ends of said first tubes in communication therewith, conduit means supported in at least one of said plenum structures and connected respectively to the adjacent ends of said second tubes in communication therewith for coupling at least some of said second tubes in series, first circulating means coupled to said plenum structures for circulating a first heat exchanging fluid therethrough and through said first tubes, and second circulating means coupled to said second tubes for circulating a second heat exchanging fluid therethrough, said heat exchanger including a tank having said tubes mounted therein, said conduit means and said plenum structures being mounted within said tank, and an intermediate plenum within said tank and disposed generally between said first and said second plenum structures, said sheath tubes including at least one longer tube disposed with its ends communicating respectively with said plenum structures and a shorter tube disposed with its one end in communication with one of said plenum structures and its other end in communication with said intermediate plenum.
Claim 12
Dependent Claim
60 words
The combination according to claim 8 wherein said end plena and said intermediate plenum are separated by baffle plates disposed adjacent the end portions of said tank, and conduit means are extended through one of said end portions to an opening in the adjacent baffle plate in communication with said intermediate pleana and with said shorter sheath tube other end.
Claim 13
Dependent Claim
185 words
A heat exchanger comprising a first group of heat exchanging tubes, a second group of heat exchanging tubes positioned respectively within said first tubes, a first plenum structure coupled to the adjacent ends of said first tubes in communication therewith, a second plenum structure coupled to the opposite ends of said first tubes in communication therewith, conduit means disposed entirely within at least one of said plenum structures and connected respectively to the adjacent ends of said second tubes in communication therewith for coupling some of said second tubes in series with the remainder Thereof respectively, first circulating means coupled to said plenum structures for circulating a first heat exchanging fluid therethrough and through said first tubes but exteriorly of said second tubes and of said conduit means along the entire length thereof, said one plenum chamber structure being shaped to provide a flow of said first fluid substantially transversely of said conduit means, and second circulating means extending through the other of said plenum structures and coupled to said second tubes for circulating a second heat exchanging fluid therethrough and through said conduit means.
Claim 14
Dependent Claim
185 words
A heat exchanger comprising a first group of heat exchanging tubes, a second group of heat exchanging tubes positioned respectively within said first tubes, a first plenum structure coupled to the adjacent ends of said first tubes in communication therewith, a second plenum structure coupled to the opposite ends of said first tubes in communication therewith, conduit means disposed entirely within at least one of said plenum structures and connected respectively to the adjacent ends of said second tubes in communication therewith for coupling some of said second tubes in series with the remainder Thereof respectively, first circulating means coupled to said plenum structures for circulating a first heat exchanging fluid therethrough and through said first tubes but exteriorly of said second tubes and of said conduit means along the entire length thereof, said one plenum chamber structure being shaped to provide a flow of said first fluid substantially transversely of said conduit means, and second circulating means extending through the other of said plenum structures and coupled to said second tubes for circulating a second heat exchanging fluid therethrough and through said conduit means.
Claim 15
Dependent Claim
54 words
The combination according to claim 10 wherein said plenum structures and said conduit means are further disposed for the direction of concurrent flows through at least one of said sheath tubes and associated inner tube and for the direction of countercurrent flows through the remainder of said sheath tubes and associated inner tubes respectively.
Claim 16
Dependent Claim
30 words
The combination according to claim 10 wherein at least some of said tubes have a plurality of heat transfer spines secured thereto, said spines extending transversely toward respectively associated tubes.
Claim 17
Dependent Claim
134 words
A heat exchanger comprising a group of heat exchanging tubes, a pair of end plenum structures, at least one of said exchanging tubes having its ends coupled respectively to said end plenum structures in communication therewith, an intermediate plenum structure disposed generally between said end plenum structures, a remainder of said tubes having the ends thereof coupled respectively to one of said end plenum structures and to said intermediate plenum structure in communication therewith, first circulating means coupled to the other of said end plenum structures and to said intermediate plenum structure for circulating a first heat exchanging fluid therethrough and through said heat exchanging tubes, and second circulating means including conduit means disposed in heat transfer relationship with said heat exchanging tubes for circulating a second heat exchanging fluid through said conduit means.
Claim 18
Dependent Claim
134 words
A heat exchanger comprising a group of heat exchanging tubes, a pair of end plenum structures, at least one of said exchanging tubes having its ends coupled respectively to said end plenum structures in communication therewith, an intermediate plenum structure disposed generally between said end plenum structures, a remainder of said tubes having the ends thereof coupled respectively to one of said end plenum structures and to said intermediate plenum structure in communication therewith, first circulating means coupled to the other of said end plenum structures and to said intermediate plenum structure for circulating a first heat exchanging fluid therethrough and through said heat exchanging tubes, and second circulating means including conduit means disposed in heat transfer relationship with said heat exchanging tubes for circulating a second heat exchanging fluid through said conduit means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |