# US 2026/0089883 A1 · Coolant distribution unit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0089883 A1 - Document ID: US20260089883A1 - Status: Published application - Kind: A1 - Application number: 19/335,660 - Filed: 2025-09-22 - Published: 2026-03-26 - Earliest claimed: 2024-09-25 - Assignees: Nidec Corporation - Applicants: Nidec Corporation - Inventors: Toshihiko TOKESHI; Taku MURAKAMI - Web page: https://patentgrep.com/patent/US20260089883A1 ## CPC - H05K 7/20272: {Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds} - G06F 1/20: Cooling means - H05K 7/20818: {within cabinets for removing heat from server blades} - G06F 2200/201: Cooling arrangements using cooling fluid - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A coolant distribution unit includes a housing, a primary flow path, a secondary flow path, a heat exchanger, and an emission path. The primary flow path is housed in the housing and connects a primary inlet and a primary outlet provided in the housing. The secondary flow path is housed in the housing and connects a secondary inlet and a secondary outlet provided in the housing. The heat exchanger is housed in the housing and connected to the primary flow path and the secondary flow path. The emission path is housed in the housing and connects an emission port provided in the housing and the primary flow path or the secondary flow path. ## Claims ### Claim 1 A coolant distribution unit, comprising: a housing; a primary flow path being housed in the housing and connecting a primary inlet and a primary outlet, the primary inlet and the primary outlet being provided in the housing; a secondary flow path being housed in the housing and connecting a secondary inlet and a secondary outlet, the secondary inlet and the secondary outlet being provided in the housing; a heat exchanger housed in the housing and connected to the primary flow path and the secondary flow path; and at least one emission path being housed in the housing and connecting at least one emission port provided in the housing and the primary flow path or the secondary flow path. ### Claim 2 (depends on 1) The coolant distribution unit according to claim 1, wherein the at least one emission path connects the at least one emission port and the primary flow path; and the primary inlet, the primary outlet, and the at least one emission port are provided on a same surface of the housing. ### Claim 3 (depends on 1) The coolant distribution unit according to claim 1, wherein the at least one emission port includes a first emission port and a second emission port; and the at least one emission path includes: a first emission path branching off at a position between the primary inlet and the heat exchanger in the primary flow path and communicating with the first emission port; and a second emission path branching off at a position between the heat exchanger and the primary outlet in the primary flow path and communicating with the second emission port. ### Claim 4 (depends on 2) The coolant distribution unit according to claim 2, wherein the housing includes a first surface located vertically below the heat exchanger, a second surface located opposite to the first surface, and a plurality of third surfaces connecting the first surface and the second surface; the primary inlet, the primary outlet, and the at least one emission port are located in the plurality of third surfaces; and a distance between the at least one emission port and the first surface is shorter than a distance between the primary inlet and the first surface and a distance between the primary outlet and the first surface. ### Claim 5 (depends on 2) The coolant distribution unit according to claim 2, wherein the housing includes a first surface located vertically below the heat exchanger, a second surface located opposite to the first surface, and a plurality of third surfaces connecting the first surface and the second surface; the primary inlet, the primary outlet, and the at least one emission port are located in the plurality of third surfaces; and the at least one emission port is provided at a position offset from the primary inlet and the primary outlet in a direction orthogonal or substantially orthogonal to a direction of arrangement of the first surface and the second surface. ### Claim 6 (depends on 2) The coolant distribution unit according to claim 2, wherein the housing includes a first surface located vertically below the heat exchanger, a second surface located opposite to the first surface, and a plurality of third surfaces connecting the first surface and the second surface; the primary inlet, the primary outlet, and the at least one emission port are provided on the plurality of third surfaces; and the at least one emission port is provided between the primary inlet and the primary outlet in a direction of arrangement of two third surfaces opposing each other of the plurality of third surfaces. ### Claim 7 (depends on 1) The coolant distribution unit according to claim 1, wherein the at least one emission port includes a third emission port and a fourth emission port; and the at least one emission path includes at least one of: a third emission path branching off at a position between the secondary inlet and the heat exchanger in the secondary flow path and communicating with the third emission port; or a fourth emission path branching off at a position between the heat exchanger and the secondary outlet in the secondary flow path and communicating with the fourth emission port. ### Claim 8 (depends on 1) The coolant distribution unit according to claim 1, wherein the at least one emission path includes two emission paths and the at least one emission port includes two emission ports; and one of the two emission paths connects one of the two emission ports and the primary flow path, and another of the two emission paths connects the other of the two emission ports and the secondary flow path. ### Claim 9 (depends on 1) The coolant distribution unit according to claim 1, further comprising a pressure sensor or a flow rate sensor located adjacent to the at least one emission port.