# US 11,441,851 B2 · Refrigerant fluid distribution device intended to be accommodated in a header of a heat exchanger > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,441,851 B2 - Document ID: US11441851B2 - Status: Granted - Kind: B2 - Application number: 16/955,344 - Filed: 2018-12-18 - Published: 2021-03-25 - Granted: 2022-09-13 - Earliest claimed: 2017-12-19 - Assignees: Valeo Systemes Thermiques - Applicants: Valeo Systemes Thermiques - Inventors: Julien Tissot; Kamel Azzouz; Amrid Mammeri; Jérôme Mougnier; Jérémy Blandin - Web page: https://patentgrep.com/patent/US11441851B2 ## CPC - F28F 9/0273: {with multiple holes} - F25B 39/00: Evaporators; Condensers - F25B 39/028: {having distributing means} - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS ## Abstract The invention concerns a device for distribution of a refrigerant fluid in a header of a heat exchanger comprising at least two conduits (12, 13), an external conduit (12) and an internal conduit (13), with the internal conduit accommodated in the external conduit in such a manner as to form a volume (14) for communication between the internal conduit and the external conduit, the external conduit comprising spraying orifices (120) each having an axis (120A) intersecting a principal lengthwise axis (12A) of the external conduit, the internal conduit comprising at least one communication orifice having an axis intersecting a principal lengthwise axis of the internal conduit. According to the invention, the internal conduit (13) comprises a portion (16) of reduced thickness formed by removal of material from an external face of the internal conduit (13), the external face facing toward the external conduit (12). ## Claims ### Claim 1 A device for distribution of a refrigerant fluid in a header of a heat exchanger comprising: at least two conduits, including an external conduit and an internal conduit, with the internal conduit accommodated in the external conduit so as to form a volume for communication extending in the external conduit and between the internal conduit and the external conduit, the external conduit comprising spraying orifices each having an axis intersecting a principal lengthwise axis of the external conduit, and the internal conduit comprising one or more communication orifice having an axis intersecting a principal lengthwise axis of the internal conduit, wherein the internal conduit comprises a machined portion extending from the external face of the internal conduit, the external face facing toward the external conduit, wherein the machined portion has a reduced thickness. ### Claim 2 (depends on 1) The distribution device according to claim 1, wherein the spraying orifices are all situated in a spraying zone in which they are arranged in a longitudinal series comprising a first spraying orifice and a last spraying orifice, the first spraying orifice and the last spraying orifice being disposed at opposite ends of the longitudinal series. ### Claim 3 (depends on 1) The distribution device according to claim 1, wherein the machined portion comprises a planar surface. ### Claim 4 (depends on 1) The distribution device according to claim 1, wherein the machined portion extends over a length equal to a length of the spraying zone. ### Claim 5 (depends on 1) The distribution device according to claim 1, wherein the one or more communication orifice is disposed on the machined portion. ### Claim 6 (depends on 3) The distribution device according to claim 3, wherein the planar surface does not face the spraying orifices. ### Claim 7 (depends on 6) The distribution device according to claim 6, wherein the planar surface faces directly away from the spraying orifices. ### Claim 8 (depends on 1) The device according to claim 1, wherein the one or more communication orifice is positioned to discharge in the opposite direction of the spraying orifices. ### Claim 9 (depends on 1) The device according to claim 1, wherein the one or more communication orifice has a diameter substantially equal to the inner diameter of the internal conduit. ### Claim 10 (depends on 2) The device according to claim 2, wherein the internal conduit comprises one communication orifice, wherein the one communication orifice is positioned substantially equidistant to the first spraying orifice and the last spraying orifice. ### Claim 11 (depends on 3) The device according to claim 3, wherein the planar surface extends at least half the length of the internal conduit. ### Claim 12 (depends on 3) The device according to claim 3, wherein the planar surface extends to the one or more communication orifice. ### Claim 13 (depends on 7) The header according to claim 7, wherein the machined portion comprises a planar surface. ### Claim 14 (depends on 13) The header according to claim 13, wherein the planar surface faces directly away from the spraying orifices. ### Claim 15 (depends on 13) The header according to claim 13, wherein the one or more communication orifice is positioned on the planar surface. ### Claim 16 A refrigerant fluid header for a heat exchanger comprising: a distribution chamber, wherein the distribution chamber accommodates a distribution device comprising: at least two conduits, including an external conduit and an internal conduit, with the internal conduit accommodated in the external conduit so as to form a volume for communication extending in the external conduit and between the internal conduit and the external conduit, the external conduit comprising spraying orifices each having an axis intersecting a principal lengthwise axis of the external conduit, the internal conduit comprising one or more communication orifice having an axis intersecting a principal lengthwise axis of the internal conduit, wherein the internal conduit comprises a machined portion extending from the external face of the internal conduit, the external face facing toward the external conduit, wherein the machined portion has a reduced thickness, and wherein the internal conduit of the distribution device comprises an inlet opening for admission of the refrigerant fluid and the spraying orifices are arranged in such a manner as to allow circulation of the refrigerant fluid between the distribution device and the distribution chamber. ### Claim 17 A heat exchanger comprising: a refrigerant fluid header comprising: a distribution chamber, wherein the distribution chamber accommodates a distribution device comprising: at least two conduits, including an external conduit and an internal conduit, with the internal conduit accommodated in the external conduit so as to form a volume for communication extending in the external conduit and between the internal conduit and the external conduit, the external conduit comprising spraying orifices each having an axis intersecting a principal lengthwise axis of the external conduit, the internal conduit comprising one or more communication orifice having an axis intersecting a principal lengthwise axis of the internal conduit, wherein the internal conduit comprises a machined portion extending from the external face of the internal conduit, the external face facing toward the external conduit, wherein the machined portion has a reduced thickness, and tubes forming a bundle of tubes extending from the header characterized in that the internal conduit of the distribution device is oriented in such a manner that the machined portion is perpendicular to the bundle of tubes. ### Claim 18 (depends on 17) The heat exchanger according to claim 17, wherein the machined portion of is formed over a length of the internal conduit equal to a length of the bundle of tubes. ### Claim 19 (depends on 17) The heat exchanger of claim 17, wherein the machined portion comprises a planar surface. ### Claim 20 (depends on 19) The heat exchanger of claim 19, wherein the one or more communication orifice is positioned on the planar surface.