# US 2017/0288512 A1 · Fluid machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0288512 A1 - Document ID: US20170288512A1 - Status: Published application - Kind: A1 - Application number: 15/473,096 - Filed: 2017-03-29 - Published: 2017-10-05 - Earliest claimed: 2016-03-31 - Assignees: Kabushiki Kaisha Toyota Jidoshokki - Applicants: Kabushiki Kaisha Toyota Jidoshokki - Inventors: Fumihiro KAGAWA; Atsushi NAITO; Yusuke KINOSHITA - Web page: https://patentgrep.com/patent/US20170288512A1 ## CPC - H02K 11/33: Drive circuits, e.g. power electronics (H02K11/38 takes precedence) - B60H 1/3222: {characterised by the compressor driving arrangements, e.g. clutches, transmissions or multiple drives (B60H1/3208, B60H1/3226 take precedence)} - H02K 5/20: with channels or ducts for flow of cooling medium - H02K 11/0141: {Shields associated with casings, enclosures or brackets} - B60H 2001/3292: {Compressor drive is electric only} - H02K 2211/03: Machines characterised by circuit boards, e.g. pcb - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES ## Abstract A fluid machine includes a housing including a suction port through which fluid is drawn, an electric motor accommodated in the housing, and a drive device configured to drive the electric motor. The drive device includes a circuit board, a heat-generating component, and a metal member. The circuit board includes a pattern wire. The circuit board is opposed to an outer surface of the housing. The heat-generating component is located between the circuit board and the outer surface of the housing and spaced apart from the circuit board. The heat-generating component generates electromagnetic noise. The metal member is at least partially located between the circuit board and the heat-generating component. The metal member is configured to transmit heat from the heat-generating component to the housing and absorb or block the electromagnetic noise. ## Claims ### Claim 1 A fluid machine comprising: a housing including a suction port through which fluid is drawn; an electric motor accommodated in the housing; and a drive device configured to drive the electric motor, wherein the drive device includes: a circuit board including a pattern wire, wherein the circuit board is opposed to an outer surface of the housing; a heat-generating component located between the circuit board and the outer surface of the housing and spaced apart from the circuit board, wherein the heat-generating component generates electromagnetic noise; and a metal member that is at least partially located between the circuit board and the heat-generating component, wherein the metal member is configured to transmit heat from the heat-generating component to the housing and absorb or block the electromagnetic noise. ### Claim 2 (depends on 1) The fluid machine according to claim 1, further comprising an insulator located between the metal member and the heat-generating component, wherein the insulator is in contact with both of the metal member and the heat-generating component. ### Claim 3 (depends on 1) The fluid machine according to claim 1, wherein the heat-generating component includes a terminal, the metal member includes a through hole through which the terminal is inserted, and the terminal connects the heat-generating component to the pattern wire in a state insulated from the metal member and inserted through the through hole. ### Claim 4 (depends on 3) The fluid machine according to claim 3, wherein the heat-generating component is located closer to the outer surface of the housing than the circuit board. ### Claim 5 (depends on 1) The fluid machine according to claim 1, wherein the drive circuit includes a filter circuit configured to reduce inflow noise included in direct current power that is received by the drive device, and an inverter circuit that receives direct current power of which inflow noise has been reduced by the filter circuit, wherein the inverter circuit is configured to convert the direct current power into alternating current power, and the heat-generating component is at least one of a coil and a capacitor that forms the filter circuit. ### Claim 6 (depends on 5) The fluid machine according to claim 5, wherein the inverter circuit includes a semiconductor module that includes switching elements, the semiconductor module is located between the circuit board and the outer surface of the housing, and the metal member includes a first metal portion located between the heat-generating component and the circuit board, and a second metal portion located between the semiconductor module and the outer surface of the housing and configured to transmit heat from the semiconductor module to the housing. ### Claim 7 (depends on 6) The fluid machine according to claim 6, wherein the metal member includes a connection portion that connects the first metal portion to the second metal portion. ### Claim 8 (depends on 7) The fluid machine according to claim 7, wherein the connection portion is located between the heat-generating component and the semiconductor module. ### Claim 9 (depends on 1) The fluid machine according to claim 1, wherein the fluid machine is a motor-driven compressor including a compression unit configured to compress fluid that is drawn from the suction port when the electric motor is driven.