# US 11,029,103 B2 · Dual seated by-pass valve for surface coolers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,029,103 B2 - Document ID: US11029103B2 - Status: Granted - Kind: B2 - Application number: 16/444,546 - Filed: 2019-06-18 - Published: 2019-10-03 - Granted: 2021-06-08 - Earliest claimed: 2013-09-22 - Assignees: Unison Industries, LLC - Applicants: Unison Industries, LLC - Inventors: Michael Ralph Storage; Dennis Alan McQueen - Web page: https://patentgrep.com/patent/US11029103B2 ## CPC - F28F 27/02: for controlling the distribution of heat-exchange media between different channels ({static flow control means in header boxes F28F9/026}; arrangements of guide plates or guide vanes F28F9/22, F28F25/12) - F16K 11/02: with all movable sealing faces moving as one unit - F16K 31/002: {actuated by temperature variation (thermo-electric F16K31/025)} - F28D 1/0233: {with air flow channels} - F28D 1/0246: {heat-exchange elements having several adjacent conduits forming a whole, e.g. blocks} - F28F 3/02: Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations (F28F3/08 takes precedence) - F28D 2021/0021: {for aircrafts or cosmonautics} - F28D 2021/0089: {Oil coolers} - F28F 1/022: {with multiple channels} - F28F 3/048: {in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels} - F28F 3/12: Elements constructed in the shape of a hollow panel, e.g. with channels {(F28D1/02, F28D1/03 take precedence)} - F28F 2250/06: Derivation channels, e.g. bypass - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} - F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general) ## Abstract A heat exchanger circuit can include a heat exchanger having a body with a plurality of cooling fins for the heat exchanger, a plurality of core cooling channels within the body, a plurality of de-congealing channels in fluid communication with the plurality of core cooling channels, and a by-pass valve in fluid communication with the plurality of core cooling channels and the plurality of de-congealing channels. ## Claims ### Claim 1 A heat exchanger circuit, comprising: a heat exchanger having a body comprising: a plurality of cooling fins for the heat exchanger; a plurality of core cooling channels within the body; a plurality of de-congealing channels in fluid communication with the plurality of core cooling channels; and a by-pass valve in fluid communication with the plurality of core cooling channels and the plurality of de-congealing channels, the by-pass valve further comprising: a valve body; a power element extending through the valve body; a de-congealing flow path passing through the valve body; a core cooling flow path passing through the valve body; a de-congealing poppet in fluid communication with the de-congealing flow path and operably connected to the power element, the de-congealing poppet being movable between a closed position and an open position that allows for fluid flow to the plurality of de-congealing channels; and a core cooling poppet in fluid communication with the core cooling flow path and operably connected to the power element, the core cooling poppet being movable between a closed position and an open position that allows for fluid flow to the plurality of core cooling channels. ### Claim 2 (depends on 1) The heat exchanger circuit of claim 1, wherein the power element is biased by a return spring. ### Claim 3 (depends on 2) The heat exchanger circuit of claim 2 further comprising an overpressure spring engaging the de-congealing poppet. ### Claim 4 (depends on 3) The heat exchanger circuit of claim 3 wherein the de-congealing poppet is spring biased toward the closed position. ### Claim 5 (depends on 3) The heat exchanger circuit of claim 3 further comprising an overpressure poppet disposed between the de-congealing flow path and the core cooling flow path. ### Claim 6 (depends on 5) The heat exchanger circuit of claim 5 wherein the overpressure spring is configured to engage the overpressure poppet. ### Claim 7 (depends on 1) The heat exchanger circuit of claim 1 wherein the power element comprises a wax capsule. ### Claim 8 (depends on 7) The heat exchanger circuit of claim 7 wherein the wax capsule is configured to change state based on a temperature of the fluid passing therethrough. ### Claim 9 (depends on 1) The heat exchanger circuit of claim 1 wherein the core cooling poppet is closed and the de-congealing poppet is open when a temperature of the fluid is at or below a predetermined threshold temperature. ### Claim 10 (depends on 9) The heat exchanger circuit of claim 9 wherein the core cooling poppet is open and the de-congealing poppet is closed when the temperature of the fluid exceeds the predetermined threshold temperature. ### Claim 11 (depends on 10) The heat exchanger circuit of claim 10 further comprising an overpressure poppet configured to open to relieve pressure when a pressure of the fluid exceeds a predetermined threshold pressure. ### Claim 12 (depends on 1) The heat exchanger circuit of claim 1, wherein the core cooling poppet is connected to the power element, and the de-congealing poppet moves relative to the power element. ### Claim 13 A heat exchanger circuit, comprising: a heat exchanger having a body comprising: a plurality of cooling fins for the heat exchanger; a plurality of core cooling channels within the body arranged closer to the plurality of cooling fins, with the plurality of core cooling channels having a cooling inlet connection and a cooling outlet connection; a plurality of de-congealing channels in fluid communication with the cooling inlet connection and the cooling outlet connection, the de-congealing channels having a de-congealing inlet and a de-congealing outlet; and a by-pass valve in fluid communication with the cooling inlet connection, the cooling outlet connection, the de-congealing inlet, and the de-congealing outlet, and configured to selectively channel fluid through the plurality of core cooling channels during a first mode of operation and through the plurality of de-congealing channels during a second mode of operation. ### Claim 14 (depends on 13) The heat exchanger circuit of claim 13 wherein the by-pass valve further comprises a movable de-congealing poppet that selectively allows for fluid flow to the plurality of de-congealing channels, and a movable core cooling poppet that selectively allows for fluid flow to the plurality of core cooling channels. ### Claim 15 (depends on 14) The heat exchanger circuit of claim 14 wherein the by-pass valve further comprises: a valve body; a power element extending through the valve body; a de-congealing flow path passing through the valve body; and a core cooling flow path passing through the valve body. ### Claim 16 (depends on 15) The heat exchanger circuit of claim 15 wherein at least one of the de-congealing poppet or the core cooling poppet are operably coupled to the power element. ### Claim 17 (depends on 15) The heat exchanger circuit of claim 15 wherein the power element comprises a wax capsule configured to change state based on a temperature of the fluid passing therethrough. ### Claim 18 (depends on 15) The heat exchanger circuit of claim 15 wherein the core cooling poppet is open and the de-congealing poppet is closed during the first mode of operation when a temperature of the fluid exceeds a predetermined threshold temperature. ### Claim 19 (depends on 15) The heat exchanger circuit of claim 15 wherein the core cooling poppet is closed and the de-congealing poppet is open during the second mode of operation when a temperature of the fluid is at or below a predetermined threshold temperature. ### Claim 20 (depends on 15) The heat exchanger circuit of claim 15 wherein the core cooling poppet is connected to the power element, and the de-congealing poppet is movable relative to the power element.