Patent US3864442A successfully refreshed from Google Patents.
US3864442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system
Assignee: Hall Thermotank International Ltd
•
Filing: 1973-06-11
•
Granted: 1975-02-04
•
Expires: 1993-06-11
Abstract
Abstract A cooler includes a casing in the form of a tower located over a liquid reservoir. A conduit in an upper part of the tower has discharge nozzles to provide a downward spray of cooling water which precipitates into the reservoir, and a contra air flow produced by means of an induced or forced straight fan mixes with the cooling water in an atmospheric section of the tower, heat exchange contact elements (fill) preferably being provided in this atmospheric section to encourage heat exchange between the water and the air. The cooler is of closed-circuit form, the cooling water being recycled from the reservoir to the discharge nozzles by a return conduit including a pump; and conduits for process liquid extend into the reservoir. A process liquid inlet and a discharge are provided to and from the conduits, and baffle plates are located in the reservoir to direct cooling water over the conduits for heat exchange between the water and the process liquid.
Inventors
- 👤 Andrew Wilson Percy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:49
CPC Classifications
F; F28; F28C; F28C1/00; F28C1/14; Y; Y02; Y02B; Y02B30/00; Y02B30/70; Y10; Y10S; Y10S261/00; Y10S261/11
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
215 words
Cooling apparatus for cooling a fluid flow, comprising in combination; a vertical casing; a discharge outlet for primary liquid arranged at an upper part of the vertical casing so as to discharge a downward flow of primary liquid within the casing; means for creating an induced or forced draft of gas to mix with the primary liquid within the casing for heat exchange between the gas and the primary liquid; a reservoir for primary liquid at the foot of the vertical casing including vertical baffle means defIning a series of parallel culverts within the reservoir; the culverts being arranged for sinuous flow of primary liquid therethrough; an end channel located at one end of the reservoir; an inlet to the reservoir for flow of primary liquid from the end channel into the reservoir for flow therethrough; duct means in the casing for directing primary liquid to said end channel; an outlet for primary liquid from the reservoir; recycling conduit means for recycling primary liquid from the reservoir outlet to the primary liquid discharge outlet; heat exchange conduit means for secondary liquid extending into the culverts so that heat exchange occurs between the primary and secondary liquids in the reservoir; and an inlet to and an outlet from the heat exchange conduit means for secondary liquid.
Claim 2
Dependent Claim
215 words
Cooling apparatus for cooling a fluid flow, comprising in combination; a vertical casing; a discharge outlet for primary liquid arranged at an upper part of the vertical casing so as to discharge a downward flow of primary liquid within the casing; means for creating an induced or forced draft of gas to mix with the primary liquid within the casing for heat exchange between the gas and the primary liquid; a reservoir for primary liquid at the foot of the vertical casing including vertical baffle means defIning a series of parallel culverts within the reservoir; the culverts being arranged for sinuous flow of primary liquid therethrough; an end channel located at one end of the reservoir; an inlet to the reservoir for flow of primary liquid from the end channel into the reservoir for flow therethrough; duct means in the casing for directing primary liquid to said end channel; an outlet for primary liquid from the reservoir; recycling conduit means for recycling primary liquid from the reservoir outlet to the primary liquid discharge outlet; heat exchange conduit means for secondary liquid extending into the culverts so that heat exchange occurs between the primary and secondary liquids in the reservoir; and an inlet to and an outlet from the heat exchange conduit means for secondary liquid.
Claim 3
Dependent Claim
219 words
Cooling apparatus for cooling a fluid flow, comprising in combination; a vertical casing; a discharge outlet for primary liquid arranged at an upper part of the vertical casing so as to discharge a downward flow of primary liquid within the casing; means for creating an induced or forced draft of gas to mix with the primary liquid within the casing for heat exchange between the gas and the primary liquid; a reservoir for primary liquid at the foot of the vertical casing including vertical baffle means defining a series of parallel culverts within the reservoir; the culverts being arranged for sinuous flow of primary liquid therethrough; an end channel located at one end of the reservoir; an inlet to the reservoir for flow of primary liquid from the end channel into the reservoir for flow therethrough; a roof for the culverts receiving the downward flow of primary liquid and directing the primary liquid to said end channel; an outlet for primary liquid from the reservoir; recycling conduit means for recycling primary liquid from the reservoir outlet to the primary liquid discharge outlet; heat exchange tubes for secondary liquid extending into the culverts so that heat exchange occurs between the primary and secondary liquids in the reservoir; and an inlet to and an outlet from the tubes for secondary liquid.
Claim 4
Dependent Claim
219 words
Cooling apparatus for cooling a fluid flow, comprising in combination; a vertical casing; a discharge outlet for primary liquid arranged at an upper part of the vertical casing so as to discharge a downward flow of primary liquid within the casing; means for creating an induced or forced draft of gas to mix with the primary liquid within the casing for heat exchange between the gas and the primary liquid; a reservoir for primary liquid at the foot of the vertical casing including vertical baffle means defining a series of parallel culverts within the reservoir; the culverts being arranged for sinuous flow of primary liquid therethrough; an end channel located at one end of the reservoir; an inlet to the reservoir for flow of primary liquid from the end channel into the reservoir for flow therethrough; a roof for the culverts receiving the downward flow of primary liquid and directing the primary liquid to said end channel; an outlet for primary liquid from the reservoir; recycling conduit means for recycling primary liquid from the reservoir outlet to the primary liquid discharge outlet; heat exchange tubes for secondary liquid extending into the culverts so that heat exchange occurs between the primary and secondary liquids in the reservoir; and an inlet to and an outlet from the tubes for secondary liquid.
Claim 5
Dependent Claim
41 words
Cooling apparatus as claimed in claim 2, wherein the tubes are in the form of tube banks each bank extending through a respective culvert of the reservoir so that the primary liquid is directed along a tube bank in a culvert.
Claim 6
Dependent Claim
27 words
Cooling apparatus as claimed in claim 3, wherein the culverts are arranged to direct the primary liquid in counterflow to the secondary liquid in the tube banks.
Claim 7
Dependent Claim
50 words
Cooling apparatus as claimed in claim 4, wherein a parallel series of tube bundles extend between headers at opposed sides of the reservoir, with the arrangement such that secondary liquid flows in counterflow in alternate tube bundles, and the inlet and outlet for secondary liquid are provided on the headers.
Claim 8
Dependent Claim
39 words
Cooling apparatus as claimed in claim 5, wherein an outlet passage for primary liquid is provided at an end of the reservoir opposite to said end channel, the outlet passage and said end channel extending parallel to the culverts.
References Cited (Backward Citations)
US877520A
Cited
US1808619A
Cited
US1919197A
Cited
US1975945A
Cited
US2084324A
Cited
US3183969A
Cited
US3137145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |