Double heat exchanger radiator assembly
First Claim
1. A heat exchanger apparatus comprising:
- (a) a first heat exchanger for performing heat exchange between a fluid and a gas, the first heat exchanger comprising;
(i) a plurality of first tubes through which the fluid can flow,(ii) a plurality of first fins disposed between adjacent first tubes,(iii) a first inlet header in fluid communication with the first tubes at first longitudinal ends of the first tubes, and(iv) a first outlet header in fluid communication with the first tubes at second longitudinal ends of the first tubes;
(b) a second heat exchanger for performing heat exchange between the fluid and the gas, the second heat exchanger being mounted adjacent to the first heat exchanger and comprising;
(i) a plurality of second tubes through which the fluid can flow,(ii) a plurality of second fins disposed between adjacent second tubes,(iii) a second inlet header in fluid communication with (A) the second tubes at first longitudinal ends of the second tubes and optionally (B) the first inlet header, and(iv) a second outlet header in fluid communication with (A) the second tubes at second longitudinal ends of the second tubes and optionally (B) the first outlet header;
wherein;
(i) the second heat exchanger is disposed on an upstream gas side of the first heat exchanger;
(ii) the first heat exchanger and the second heat exchanger are configured to permit a gas flow in a direction from (A) the second heat exchanger and over the second tubes and the second fins thereof to (B) the first heat exchanger and over the first tubes and the first fins thereof in use to provide heat exchange between the fluid and the gas; and
(iii) the first heat exchanger and the second heat exchanger are arranged in a parallel configuration to allow a stream of fluid to be separated into two discrete streams of fluid, each of which passes through only one of the first heat exchanger and the second heat exchanger before recombining with the other discrete stream of fluid and exiting the apparatus.
1 Assignment
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Accused Products
Abstract
The disclosure generally relates to a heat exchanger apparatus having first and second heat exchangers arranged in a parallel configuration to receive a first fluid (e.g., a hot fluid) to be subjected to a heat exchange operation (e.g., cooling of the hot fluid). The first and second heat exchangers are further configured in a series configuration with respect to the flow of a second fluid to be used as a heat exchange medium (e.g., a cold fluid to be heated by the first, hot fluid). The heat exchanger apparatus can be used as a radiator (e.g., engine coolant heat exchanger) for a motorized vehicle, in particular a heavy vehicle intended for use in relatively hot ambient environments (e.g., an armored fighting vehicle adapted for desert use at ambient temperatures above about 100° F.). The disclosure also relates to methods of using the heat exchanger apparatus, for example in the motorized vehicle setting.
37 Citations
25 Claims
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1. A heat exchanger apparatus comprising:
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(a) a first heat exchanger for performing heat exchange between a fluid and a gas, the first heat exchanger comprising; (i) a plurality of first tubes through which the fluid can flow, (ii) a plurality of first fins disposed between adjacent first tubes, (iii) a first inlet header in fluid communication with the first tubes at first longitudinal ends of the first tubes, and (iv) a first outlet header in fluid communication with the first tubes at second longitudinal ends of the first tubes; (b) a second heat exchanger for performing heat exchange between the fluid and the gas, the second heat exchanger being mounted adjacent to the first heat exchanger and comprising; (i) a plurality of second tubes through which the fluid can flow, (ii) a plurality of second fins disposed between adjacent second tubes, (iii) a second inlet header in fluid communication with (A) the second tubes at first longitudinal ends of the second tubes and optionally (B) the first inlet header, and (iv) a second outlet header in fluid communication with (A) the second tubes at second longitudinal ends of the second tubes and optionally (B) the first outlet header; wherein; (i) the second heat exchanger is disposed on an upstream gas side of the first heat exchanger; (ii) the first heat exchanger and the second heat exchanger are configured to permit a gas flow in a direction from (A) the second heat exchanger and over the second tubes and the second fins thereof to (B) the first heat exchanger and over the first tubes and the first fins thereof in use to provide heat exchange between the fluid and the gas; and (iii) the first heat exchanger and the second heat exchanger are arranged in a parallel configuration to allow a stream of fluid to be separated into two discrete streams of fluid, each of which passes through only one of the first heat exchanger and the second heat exchanger before recombining with the other discrete stream of fluid and exiting the apparatus. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A heat exchanger apparatus comprising:
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(a) a first heat exchanger for performing heat exchange between a fluid and a gas, the first heat exchanger comprising; (i) a plurality of first tubes through which the fluid can flow, (ii) a plurality of first fins disposed between adjacent first tubes, (iii) a first inlet header in fluid communication with the first tubes at first longitudinal ends of the first tubes, and (iv) a first outlet header in fluid communication with the first tubes at second longitudinal ends of the first tubes; (b) a second heat exchanger for performing heat exchange between the fluid and the gas, the second heat exchanger being mounted adjacent to the first heat exchanger and comprising; (i) a plurality of second tubes through which the fluid can flow, (ii) a plurality of second fins disposed between adjacent second tubes, (iii) a second inlet header in fluid communication with (A) the second tubes at first longitudinal ends of the second tubes and optionally (B) the first inlet header, and (iv) a second outlet header in fluid communication with (A) the second tubes at second longitudinal ends of the second tubes and optionally (B) the first outlet header; wherein; (i) the second heat exchanger is disposed on an upstream gas side of the first heat exchanger; and (ii) the first heat exchanger and the second heat exchanger are configured to permit a gas flow in a direction from (A) the second heat exchanger and over the second tubes and the second fins thereof to (B) the first heat exchanger and over the first tubes and the first fins thereof in use to provide heat exchange between the fluid and the gas; wherein at least one of the first or second inlet or outlet headers comprises at least one internal baffle, the baffle partitioning the header into two or more portions that are internally isolated from each other but which remain in fluid communication via the opposing header and the intervening tubes, thereby creating a multi-pass fluid flow path through the tubes of the first or second heat exchanger; wherein; (i) the first inlet header comprises a first inlet internal baffle that partitions the first inlet header into two portions that are internally isolated from each other but which remain in fluid communication via the first outlet header and the first tubes; (ii) the first outlet header comprises a first outlet internal baffle that partitions the first outlet header into two portions that are internally isolated from each other but which remain in fluid communication via the first inlet header and the first tubes; and (iii) the first inlet internal baffle and the first outlet internal baffle form a multi-pass flowpath for the fluid flowing through the first tubes of the first heat exchanger; and wherein the second heat exchanger has a single-pass flow path for the fluid flowing through the second tubes of the second heat exchanger. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification