# US 2008/0184732 A1 · Evaporator, in Particular for an Air-Conditioning System of a Motor Vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2008/0184732 A1 - Document ID: US20080184732A1 - Status: Published application - Kind: A1 - Application number: 11/795,217 - Filed: 2006-01-16 - Published: 2008-08-07 - Earliest claimed: 2005-01-14 - Inventors: Jens Hadler; Michael Kohl; Dieter Schmadl; Wolfgang Seewald; Christoph Walter; Eberhard Zwittig - Web page: https://patentgrep.com/patent/US20080184732A1 ## CPC - F28F 3/12: Elements constructed in the shape of a hollow panel, e.g. with channels {(F28D1/02, F28D1/03 take precedence)} - B60H 1/00271: {HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit} - B60H 1/00885: {Controlling the flow of heating or cooling liquid, e.g. valves or pumps (B60H1/00899 takes precedence; constructions of valves B60H1/00485)} - F25B 39/022: {with plate-like or laminated elements} - F28D 1/0461: {Combination of different types of heat exchanger, e.g. radiator combined with tube-and-shell heat exchanger; Arrangement of conduits for heat exchange between at least two media and for heat exchange between at least one medium and the large body of fluid} - F28D 1/05391: {with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators} - F28D 7/0008: {the conduits for one medium being in heat conductive contact with the conduits for the other medium} - B60H 2001/00307: {Component temperature regulation using a liquid flow} - B60H 2001/00614: {Cooling of electronic units in air stream} - B60H 2001/00949: {comprising additional heating/cooling sources, e.g. second evaporator} - F25B 9/008: {the refrigerant being carbon dioxide} - F25B 25/005: {using primary and secondary systems} - F25B 2309/06: Compression machines, plants or systems characterised by the refrigerant being carbon dioxide - F28D 2021/0031: {Radiators for recooling a coolant of cooling systems} - F28D 2021/0085: {Evaporators} - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS - 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 The invention relates to an evaporator (1), in particular for an air-conditioning system of a motor vehicle, comprising flow channels for a coolant and ribs which can be impinged upon by air and which are arranged on the outside of the flow channels. According to the invention, at least one cooling element (5) which can be cross-flown by a coolant (5) is connected in a thermally conductive manner to the evaporator (1) and is connected to a secondary circuit (6) which acts as a cooler for the consumers, in particular electronic components (8). ## Claims ### Claim 1 An evaporator, especially for an air-conditioning system of a motor vehicle with flow channels for a refrigerant and with fins, arranged outside of the flow channels and that can be impinged upon by air, characterized in that at least one cooling element (5, 11, 21, 210, 510, 520, 710) that can carry a coolant flow is connected in a heat conductive way to the evaporator (1, 10, 20, 270, 570, 770). ### Claim 2 (depends on 1) The evaporator according to claim 1, characterized in that the evaporator is constructed as a flat tube evaporator (10, 20, 30, 270, 570, 770) with flat tubes (10a, 31, 81, 220, 230) and corrugated fins (10b, 82). ### Claim 3 (depends on 1) The evaporator according to claim 1, characterized in that the evaporator is constructed as a plate or tray evaporator. ### Claim 4 (depends on 1) The evaporator according to claim 1, characterized in that the refrigerant is R134a or R152. ### Claim 5 (depends on 1) The evaporator according to claim 1, characterized in that the refrigerant is R744 (carbon dioxide). ### Claim 6 (depends on 1) The evaporator according to claim 1, characterized in that the one or more cooling elements (5, 11, 21, 22, 35, 80) are arranged between two adjacent flat tubes (10a, 81) or trays or plates. ### Claim 7 (depends on 1) The evaporator according to claim 1, characterized in that the one or more cooling elements (5, 11, 21, 22, 35, 80, 210, 510, 520, 710, 910) are connected to at least one flow channel (10a, 31, 81, 220) with a material fit, especially through soldering, welding, adhesion, etc., or especially with a positive fit through clips, screws, etc. ### Claim 8 (depends on 1) The evaporator according to claim 1, characterized in that the cooling element (5, 11, 21, 22, 35, 60, 70, 80) is connected on the coolant side to a separate cooling circuit (secondary circuit 6). ### Claim 9 (depends on 8) The evaporator according to claim 8, characterized in that the secondary circuit (6) is used for cooling loads generating heat, especially electronic components. ### Claim 10 (depends on 1) The evaporator according to claim 1, characterized in that the coolant in the secondary circuit (6) is a mixture of water and Glysantin. ### Claim 11 (depends on 1) The evaporator according to claim 1, characterized in that the one or more cooling elements (5, 11, 21, 22, 35, 60, 70, 80, 210, 510, 520, 710, 910) are constructed as rectangular tubes (61, 71) and are arranged between adjacent flow channels (81). ### Claim 12 (depends on 1) The evaporator according to claim 1, characterized in that the one or more cooling elements (80) contact the flow channels (81) with both broad sides. ### Claim 13 (depends on 1) The evaporator according to claim 1, characterized in that the one or more cooling elements (80) are arranged between a flow channel (81) and a corrugated fin (82). ### Claim 14 (depends on 1) Evaporator according to claim 1, characterized in that the one or more cooling elements (80) are arranged between two adjacent corrugated fins (82). ### Claim 15 (depends on 1) The evaporator according to claim 1, characterized in that the one or more cooling elements (70) can carry a single flow of coolant. ### Claim 16 (depends on 1) The evaporator according to claim 1, characterized in that the cooling element (69) can carry a double flow (with reversal U). ### Claim 17 (depends on 1) The evaporator according to claim 1, characterized in that the one or more cooling elements (60, 70) have an inlet and an outlet port (60a, 60b, 70a, 70b) for the coolant. ### Claim 18 (depends on 1) The evaporator according to claim 1, characterized in that turbulence inserts (64, 72) are arranged in the interior of the cooling element (60, 70). ### Claim 19 (depends on 1) The evaporator according to claim 1, characterized in that the one or more cooling elements (210, 410, 520, 710, 910) are connected to at least one outer flat tube (220) with a material fit, especially through soldering, welding, adhesion, etc., and/or especially with a positive fit through clips, screws, etc. ### Claim 20 (depends on 1) The evaporator according to claim 1, characterized in that at least one first cooling element (510) and at least one second cooling element (520) can carry a flow in series. ### Claim 21 (depends on 1) The evaporator according to claim 1, characterized in that at least one first cooling element (710) and at least one second cooling element (710) can carry a flow in parallel. ### Claim 22 (depends on 1) The evaporator according to claim 1, characterized in that at least one cooling element (210, 510, 520, 710, 910) replaces at least one side part of the evaporator (270, 570, 770) and in particular delimits the tube block (370). ### Claim 23 (depends on 1) The evaporator according to claim 1, characterized in that a width (390) of the one or more cooling elements (210, 510, 520, 710, 910) is independent of at least one modular dimension of at least one tube, especially a flat tube, and/or at least one fin, especially a corrugated fin. ### Claim 24 (depends on 1) The evaporator according to claim 1, characterized in that a width (390) of the one or more cooling elements (210, 510, 520, 710, 910) is dependent on at least one modular dimension of at least one tube, especially a flat tube, and/or at least one fin, especially a corrugated fin. ### Claim 25 A cooling device for cooling loads generating heat, especially in a motor vehicle, characterized by the heat-conductive connection of at least one cooling element that can carry a coolant flow to an evaporator, especially of a motor vehicle air-conditioning system, and the connection of a secondary circuit that can carry a flow of coolant to the one or more cooling elements according to one of the preceding claims. ### Claim 26 Use of an evaporator, especially of a motor vehicle air-conditioning system, as a heat sink for cooling of loads generating heat.