# US 11,910,515 B2 · X-ray source with an electromagnetic pump > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,515 B2 - Document ID: US11910515B2 - Status: Granted - Kind: B2 - Application number: 17/595,064 - Filed: 2020-05-07 - Published: 2022-07-14 - Granted: 2024-02-20 - Earliest claimed: 2019-05-09 - Assignees: Excillum AB - Applicants: Excillum AB - Inventors: Ulf Lundström; Björn Hansson; Per Takman; Tomi Tuohimaa - Web page: https://patentgrep.com/patent/US11910515B2 ## CPC - F04B 35/045: {using solenoids} - H05G 2/0023: {Constructional details of the ejection system} - F04B 15/02: the fluids being viscous or non-homogeneous - F04B 17/03: driven by electric motors - F04B 17/04: using solenoids - F04B 17/042: {the solenoid motor being separated from the fluid flow} - F04B 17/044: {using solenoids directly actuating the piston} - H01J 35/112: {Non-rotating anodes (H01J35/12 takes precedence)} - H01J 2235/082: Fluids, e.g. liquids, gases - H01J 2235/1026: Means (motors) for driving the target (anode) - F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F) - H05G: X-RAY TECHNIQUE (investigating or analysing materials by the use of X-rays G01N23/00; apparatus for X-ray photography G03B42/02; X-ray tubes H01J35/00; TV systems having X-ray input H04N5/321) - H01J: ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS (spark-gaps H01T; electric arc lamps H05B31/00; particle accelerators H05H) ## Abstract An electromagnetic pump for pumping an electrically conductive liquid, including a first conduit section and a second conduit section. The electromagnetic pump further includes a current generator arranged to provide an electric current through the liquid in the first conduit section and the liquid in the second conduit section such that a direction of the electric current is intersecting the flow of the liquid in the first conduit section and in the second conduit section, and a magnetic field generating arrangement arranged to provide a magnetic field passing through the liquid in the first conduit section and the second conduit section such that a direction of the magnetic field is intersecting the flow of the liquid and the direction of the electric current. ## Claims ### Claim 1 An electromagnetic pump for pumping an electrically conductive liquid, comprising: a first conduit section having an inlet and an outlet; a second conduit section having an inlet and an outlet; wherein each one of the conduit sections is arranged to provide a flow of the liquid from its inlet to its outlet; and wherein the outlet of the first conduit section is fluidly connected to the inlet of the second conduit section; the electromagnetic pump further comprising: a current generator arranged to provide an electric current through the liquid in the first conduit section and the liquid in the second conduit section such that a direction of the electric current is intersecting the flow of the liquid in the first conduit section and in the second conduit section; and a magnetic field generating arrangement arranged to provide a magnetic field passing through the liquid in the first conduit section and the second conduit section such that a direction of the magnetic field is intersecting the flow of the liquid and the direction of the electric current; wherein the first conduit section and the second conduit section are configured to provide an orientation of the flow of the liquid in the first conduit section that is opposite to an orientation of the flow of the liquid in the second conduit section. ### Claim 2 (depends on 1) The electromagnetic pump according to claim 1, further comprising a yoke encasing the first conduit section and the second conduit section, wherein the yoke comprises a ferromagnetic material. ### Claim 3 (depends on 1) The electromagnetic pump according to claim 1, further comprising a core of a ferromagnetic material. ### Claim 4 (depends on 1) The electromagnetic pump according to claim 1, wherein the outlet of the first conduit section is fluidly connected to the inlet of the second conduit section by means of an intermediate reservoir formed by an inner wall and an outer wall of the electromagnetic pump. ### Claim 5 (depends on 1) The electromagnetic pump according to claim 1, wherein the outlet of the first conduit section is fluidly connected to the inlet of the second conduit section by means of an intermediate conduit. ### Claim 6 (depends on 1) The electromagnetic pump according to claim 1, further being configured to allow the electric current to pass from the first conduit section to the second conduit section. ### Claim 7 (depends on 1) The electromagnetic pump according to claim 1, wherein the magnetic field generating arrangement comprises a permanent magnet or an electromagnet. ### Claim 8 (depends on 1) The electromagnetic pump according to claim 1, further comprising an electrically conducting cuff arranged between the first conduit section and the second conduit section for allowing the electric current to travel from the first conduit section to the second conduit section. ### Claim 9 (depends on 1) The electromagnetic pump according to claim 1, wherein the first conduit section and the second conduit section are consecutively arranged along a main axis. ### Claim 10 (depends on 9) The electromagnetic pump according to claim 9, wherein the first conduit section comprises a first coil wound in a first direction around the main axis, and wherein the second conduit section comprises a second coil wound in a second direction around the main axis, the second direction being opposite the first direction. ### Claim 11 (depends on 10) The electromagnetic pump according to claim 10, wherein each one of the conduit sections comprises an interconnecting arrangement configured to allow the electric current to travel between adjacent windings of the respective coils. ### Claim 12 (depends on 10) The electromagnetic pump according to claim 10, wherein the magnetic field generating arrangement comprises a first magnetic field generator arranged to at least partially enclose the first conduit section, and a second magnetic field generator arranged to at least partially enclose the second conduit section, wherein the first magnetic field generator is arranged with a type one magnetic pole facing radially towards the first conduit section and a type two magnetic pole facing radially away from the first conduit section, and wherein the second magnetic field generator is arranged with the type one magnetic pole facing radially away from the second conduit section and the type two magnetic pole facing radially towards the second conduit section, the type one and type two magnetic poles being opposite magnetic poles. ### Claim 13 (depends on 10) The electromagnetic pump according to claim 10, wherein the magnetic field generating arrangement comprises a first magnetic field generator arranged on an inlet side of the first conduit section, wherein the first magnetic field generator is arranged with a type one magnetic pole facing axially towards the first conduit section and a type two magnetic pole facing axially away from the first conduit section, and a second magnetic field generator arranged on an outlet side of the first conduit section and an inlet side of the second conduit section, wherein the second magnetic field generator is arranged with the type one magnetic pole facing axially towards the first conduit section and the type two magnetic pole facing axially towards the second conduit section, the type one and type two magnetic poles being opposite magnetic poles. ### Claim 14 (depends on 10) The electromagnetic pump according to claim 10, wherein the first conduit section comprises a first spiral shape arranged substantially transverse to the main axis, and wherein the second conduit section comprises a second spiral shape arranged substantially transverse to the main axis; and wherein the magnetic field generating arrangement comprises a first magnetic field generator arranged on an inlet side of the first conduit section, wherein the first magnetic field generator is arranged with a type one magnetic pole facing axially towards the first conduit section and a type two magnetic pole facing axially away from the first conduit section, and a second magnetic field generator arranged on an outlet side of the first conduit section and an inlet side of the second conduit section, wherein the second magnetic field generator is arranged with the type one magnetic pole facing axially towards the second conduit section and the type two magnetic pole facing axially towards the first conduit section, the type one and type two magnetic poles being opposite magnetic poles. ### Claim 15 (depends on 1) An X-ray source comprising: a liquid target generator configured to form a liquid target of an electrically conductive liquid; an electron source configured to provide an electron beam interacting with the liquid target to generate X-ray radiation; and an electromagnetic pump according to claim 1.