US3937276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aftercooler for air compressor
Assignee: GORDON SMITH AND CO Inc
•
Filing: 1974-05-21
•
Granted: 1976-02-10
•
Expires: 1994-05-21
Abstract
Abstract A tubular heat exchanger designed for easy and compact mounting within a receiver tank. Within the rigid casing of the heat exchanger are mounted a plurality of spaced, parallel tubes. Coolant fluid entering one end of the heat exchanger, flows through a group of the tubes, and returns to the same end of the heat exchanger through the remaining tubes, whereupon it exits the exchanger. Hot fluid such as compressed air enters one end of the exchanger, passes along the length of the exchanger while intermingling with the tubes so as to be cooled, and then exits into a receiver tank through a plurality of holes located in the opposite end of the heat exchanger.
Inventors
- 👤 Richard Ostwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:13
CPC Classifications
F; F28; F28F; F28F9/00; F28D; F28D7/00; F28D7/16; F28D7/163; F28D7/1638
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
240 words
An aftercooler for cooling compressed gas such as compressed air, the aftercooler including a tubular casing having a plurality of internal ducts for conveying coolant fluid therethrough with spaces between the ducts, said casing having a first inlet port for introducing coolant fluid into the casing to pass through certain of said cooling ducts, an outlet port for discharging spent cooling fluid from the casing, said casing having a second inlet port for introducing a compressed gas to be cooled such as compressed air into the casing to pass in the spaces between the cooling ducts, said casing having outlet means adjacent one end thereof for exiting the cooled compressed gas from the casing and into a receiving tank, and said casing having means for fixing a portion of said casing to a wall of a receiving tank with said outlet means for the compressed gas located within a receiving tank, and with said inlet and outlet ports for the cooling fluid located externally of a receiving tank, and wherein said inlet and outlet ports for the coolant fluid are situated adjacent the end of the casing opposite said one end where said outlet means for the compressed gas is located, and wherein the outlet means for exiting the compressed gas includes a first set of a plurality of small apertures angularly spaced around the periphery of the casing for reducing noise associated with the discharge of the compressed gas.
Claim 2
Dependent Claim
240 words
An aftercooler for cooling compressed gas such as compressed air, the aftercooler including a tubular casing having a plurality of internal ducts for conveying coolant fluid therethrough with spaces between the ducts, said casing having a first inlet port for introducing coolant fluid into the casing to pass through certain of said cooling ducts, an outlet port for discharging spent cooling fluid from the casing, said casing having a second inlet port for introducing a compressed gas to be cooled such as compressed air into the casing to pass in the spaces between the cooling ducts, said casing having outlet means adjacent one end thereof for exiting the cooled compressed gas from the casing and into a receiving tank, and said casing having means for fixing a portion of said casing to a wall of a receiving tank with said outlet means for the compressed gas located within a receiving tank, and with said inlet and outlet ports for the cooling fluid located externally of a receiving tank, and wherein said inlet and outlet ports for the coolant fluid are situated adjacent the end of the casing opposite said one end where said outlet means for the compressed gas is located, and wherein the outlet means for exiting the compressed gas includes a first set of a plurality of small apertures angularly spaced around the periphery of the casing for reducing noise associated with the discharge of the compressed gas.
Claim 3
Dependent Claim
59 words
The aftercooler defined in claim 1 including an apertured wall member adjacent said one end of the casing having apertures communicating with the cooling ducts, and wherein said casing contains a chamber adjacent said one end thereof for receiving coolant fluid from a first group of tubes and for directing the coolant fluid to a second group of tubes.
Claim 4
Dependent Claim
21 words
The aftercooler defined in claim 1 wherein said apertures are spaced 30° from each other around the periphery of the casing.
Claim 5
Dependent Claim
40 words
The aftercooler defined in claim 1 wherein the outlet means for exiting the compressed gas includes a second set of a plurality of small apertures angularly spaced around the periphery of the casing closely adjacent the first set of apertures.
Claim 6
Dependent Claim
42 words
The aftercooler defined in claim 1 wherein said means for fixing the casing to a wall of a receiving tank includes a plurality of threads extending circumferentially around the casing for receipt in mating threads in a wall of a receiver tank.
Claim 7
Dependent Claim
32 words
The aftercooler defined in claim 5 wherein said last defined means further includes a flange radially projecting from the casing adjacent said threads for engagement against a wall of a receiving tank.
Claim 8
Dependent Claim
32 words
The aftercooler defined in claim 6 wherein said last defined means further includes a seal extending about the casing against said flange for engagement against the wall of a associated receiving tank.
Claim 9
Dependent Claim
153 words
The aftercooler defined in claim 6 further including a pair of wall members respectively situated transversely in said opposite ends of the casing and having apertures respectively receiving said internal ducts for conveying coolant fluid through the ducts, and wherein there is further included a first cowl at said one end of the casing containing a chamber in said one end of the casing for receiving cooling fluid from a first group of ducts and for directing the cooling fluid to a second group of ducts, and wherein there is further included a second cowl at the end of the casing opposite said first end, said second cowl including a baffle dividing the space enclosed by the cowl into two compartments, one compartment communicating with said first inlet port for introducing coolant fluid into the casing and the other compartment communicating with the outlet port for discharging spent cooling fluid from the casing.
Claim 10
Dependent Claim
182 words
In combination with a receiving tank for a compressed gas such as a receiving tank in an air compressor system for receiving compressed air to be subsequently discharged at a point of use and wherein the receiving tank includes a chamber for receiving the compressed gas; an aftercooler for cooling the compressed gas prior to receipt in the receiving tank, the aftercooler including an elongated body having heat exchange means therein, said body being mounted to the receiving tank with a first portion of said body being received in said chamber and with a second portion of said body being located externally of the receiving tank, said body having an inlet port located in said second portion thereof for directing the compressed gas into said body to be cooled, and said body having in said second portion thereof an outlet means for discharging the compressed gas after cooling into said chamber, and wherein said outlet means includes a plurality of small angularly spaced apertures communicating with said chamber for exiting the cooled compressed gas directly into said chamber of the receiving tank.
Claim 11
Dependent Claim
182 words
In combination with a receiving tank for a compressed gas such as a receiving tank in an air compressor system for receiving compressed air to be subsequently discharged at a point of use and wherein the receiving tank includes a chamber for receiving the compressed gas; an aftercooler for cooling the compressed gas prior to receipt in the receiving tank, the aftercooler including an elongated body having heat exchange means therein, said body being mounted to the receiving tank with a first portion of said body being received in said chamber and with a second portion of said body being located externally of the receiving tank, said body having an inlet port located in said second portion thereof for directing the compressed gas into said body to be cooled, and said body having in said second portion thereof an outlet means for discharging the compressed gas after cooling into said chamber, and wherein said outlet means includes a plurality of small angularly spaced apertures communicating with said chamber for exiting the cooled compressed gas directly into said chamber of the receiving tank.
Claim 12
Dependent Claim
59 words
The combination defined in claim 9 wherein said body has a plurality of external screw threads and wherein said receiving tank has a wall enclosing said chamber, said wall having an aperture receiving said body, and said wall having screw threads surrounding said aperture and receiving said threads of said body to secure the body in the receiving tank.
References Cited (Backward Citations)
US2046569A
Cited
US2774575A
Cited
BE549599A
Cited
US3133590A
Cited
US3237684A
Cited
US3398789A
Cited
US3315732A
Cited
US3814178A
Cited
US3776303A
Cited
US3856078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |