19 results about "Magneto hydrodynamic" patented technology

A pulse-type radiation-driven test platform and an operating method therefor. The test platform comprises a rail support system (10), and a driven section (4), an auxiliary film-clamping mechanism (5), a spray pipe (6) and a test section (8), which are coaxially connected in sequence and can move along a surface of the rail support system; a magnetohydrodynamic acceleration system (7) is provided in the spray pipe (6); the interior of the test section (8) is in communication with a vacuum system (9); and the interior of the driven section (4) is in communication with a gas supply system (11). In order to improve the performance of the test platform, a main film-clamping mechanism (3) and a driving section (2) are mounted upstream of the driven section (4), and a radiation source (1) can act on one side at the top of the driving section (2) or the driven section (4).

An apparatus for producing drops of liquid metal for additive manufacturing comprises a reservoir for supplying liquid metal and a pressure chamber in fluid communication with the reservoir. The pressure chamber has a channel therein where compressive forces are applied on the liquid metal therein. Upper and lower electrodes apply a current through the liquid metal in the pressure chamber. This current creates an electric field that produces radially inward directed Lorentz forces on the liquid metal. This compressive force provides pressure in the longitudinal direction for ejecting the liquid metal through the orifice to form liquid metal droplets.

Various embodiments of magneto-hydrodynamic connection pumps are discussed. In some cases, the pumps include: a body forming an inner channel, a first connection part on a first side of the tube, a second connection part on a second side of the tube; an anode electrode on an inside wall of the body, a cathode electrode located on the inside wall of the body at a location opposite the anode electrode, and one or more permanent magnets attached to or embedded into an outside wall of the body.

The utility model provides a kind of flow field pool for flux transfer, belong to chip mass transfer technical field, including flow field groove, the upper part of one end of flow field groove is provided with flow field tower, the lower part of another end of flow field groove is provided with flow field pool, slope is provided between flow field groove and flow field tower, filter screen is provided between flow field groove and flow field pool, flow field groove surface is provided with fluid, chip is provided between fluid, RGB board is provided in the middle of flow field groove, and fluid is located above RGB board.The utility model uses above-mentioned one kind of flow field pool for flux transfer, solve the chip transfer efficiency low in prior art, recovery difficult and the problems such as poor flow field uniformity.

The present invention discloses a magnetohydrodynamics power system which utilizes low temperature heat source. Variable control of the operation of the system, along with determining configurations for specific cases, are made possible by selecting the refrigerant, liquid metal circuit geometry, and by adjusting the system condensing pressure and / or temperature. Adjustable condensing pressure and / or temperature allows the system to react to changing ambient temperature and maximize power output. Adjusting condensing pressure and / or temperature of the system is made possible with a variable condenser pressure controller. The variable condenser pressure controller allows utilization of the physical properties of the refrigerant over a wide range of condensing temperatures / pressures, including pressures in the vacuum range. Meanwhile rare earth permanent magnets in paired Halbach arrays are used in the magnetohydrodynamics generator to augment the magnetic field, and a series electrode connection is made possible to achieve a high voltage output.

The invention relates to a temperature control arrangement (1) with a heat source (3) and a heat sink (5), wherein the heat source (3) absorbs heat from a magnetocaloric circuit (10) via a heat exchanger (18) and releases it to the outside, and the heat sink (5) releases heat absorbed from the outside to the magnetocaloric circuit (10) via a heat exchanger (18), wherein the magnetocaloric circuit (10) comprises a closed channel system (14) for conducting a magnetocaloric medium (12), wherein one of the heat exchangers (18) is designed as a pump heat exchanger (18A) in which a magnetic device (16) and a magnetohydrodynamic pump module (20) are at least partially integrated, which comprises an electrode device (22) which conducts an electric current at a channel section (15) of the channel (14A) through the magnetocaloric medium (12),so that by interaction with a magnetic field generated by the magnetic device (16), a Lorentz force is created which specifically accelerates the magnetocaloric medium (12) and a resulting pressure build-up causes a desired volume flow of the magnetocaloric medium (12) through the channel (14A), wherein the magnetocaloric medium (12) heats up when entering the magnetic field and cools down when leaving the magnetic field.

This invention provides a multiphysics synergistic activated water generator for preparing air catalyst-containing bottom liquid, which includes a device for generating a bottom liquid specifically for air catalyst formulation. [Solution] A closed-loop circulating water production process apparatus is formed, comprising a circulating liquid storage tank (1), a multi-stage fluid cutting unit (2), a micro-nano membrane diffuser (3), a magnetohydrodynamic power activation pipe (4), a circulating inverter pump (5), and a plate-type heat exchanger (6), which are sequentially connected in series by pipelines. The circulating liquid storage tank is the starting and ending point. The circulating liquid storage tank has a far-infrared radiation coating layer (11) on its inner wall that covers a radiation wavelength band of 4 μm to 14 μm, and an ultrasonic vibrating plate (12) with a frequency of 40 kHz is provided at the bottom of the inner tank. The multi-stage fluid cutting unit is arranged alternately in multiple layers and includes a fixed tooth plate (21) and a rotating tooth plate (22) that mesh with each other, as well as a drive motor (23) that drives each rotating tooth plate. The dynamic and stationary teeth of the fixed and rotating tooth plates have a gap between them.

An Interconnection integrated MHD pump is used in a liquid metal cooling system to provide a pump to the liquid metal by induced magnetic field and may be connected to main electrical systems of the cooling system for providing the magnetic field. The liquid metal cooling system includes an MHD pump, cooling pad, a radiator, and a fluidic channel. The MHD pump comprises a magnet on at least one side of one of the fluidic channel.

The invention relates to an electrical machine comprising a stator, a rotor (5), at least one motor winding (6) and a magnetohydrodynamic temperature-control arrangement (10) that is integrated in the stator and / or the rotor (5) and comprises a closed channel system, which has at least one channel (14A) for guiding an electrically and thermally conductive medium (16) and is thermally coupled to the stator and / or the rotor (5), and at least one magnetohydrodynamic pump module (12) that comprises an electrode device (18) and is designed to channel an electric current (IP) through the medium (16) at a channel section (14.1) using the electrode device (18) and, utilizing a magnetic field (B) generated in the electrical machine, to generate a Lorentz force (FL) that accelerates the medium (16) in the channel section (14.1) in targeted fashion, and a resulting pressure build-up brings about a desired volume flow of the medium (16) through the at least one channel (14A), wherein the at least one magnetohydrodynamic pump module (12) is designed and positioned such that the electrode device (18) channels the electric current (IP) through the medium (16) perpendicularly to the profile of field lines of the magnetic field (B) and perpendicularly to the channel section (14.1), and the channel section (14.1) is oriented perpendicularly to the profile of the magnetic field (B).

An apparatus comprises: electric circuits including a first circuit and a second circuit to operate in multiple modes including a first mode in which the first circuit dissipates more heat than the second circuit and in a second mode in which the second circuit dissipates more heat; and a coolant loop along which the first circuit and the second circuit are thermally coupled at spaced-apart locations, wherein the coolant loop includes a reversible magnetohydrodynamic (MHD) pump to pump a cold liquid metal through the coolant loop in reversible coolant-flow directions responsive to reversible current directions of a current applied to the MHD pump, such that when the first mode is active, the cold liquid metal initially encounters the first circuit and then encounters the second circuit, and when the second mode is active, the cold liquid metal initially encounters the second circuit and then encounters the first circuit.

The invention relates to an energy storage arrangement (1) with a redox energy storage device (7), which comprises at least one redox flow cell and is connected via at least two channel systems (4) to at least two electrolyte containers (3), in each of which an electrically conductive electrolyte (5) is stored, and an MHD module (10), which comprises at least two magnetohydrodynamic pump modules (20) and at least one evaluation and control unit (12), wherein the at least one evaluation and control unit (12) is configured to control the at least two magnetohydrodynamic pump modules (20), wherein the at least two magnetohydrodynamic pump modules (20) each comprise a magnet device and an electrode device, which is configured toto conduct an electric current provided by the at least one evaluation and control unit (12) through the corresponding electrically conductive electrolyte (5) in a channel section of a corresponding channel system (4), so that, in conjunction with a magnetic field generated by the magnetic device, a Lorentz force is created which selectively accelerates the electrically conductive electrolyte (5) in the corresponding channel section, so that a resulting pressure build-up causes a desired volume flow of the electrically conductive electrolyte (5) through the corresponding channel system (4) and the redox energy storage device (7).

A cooling system (100) for thermal management of a component (102), the cooling system (100) comprising: a coolant circuit (104) comprising a plurality of sections; a magnetohydrodynamic pump (114) configured to pump a coolant around the coolant circuit (104) by applying a first electric field and a first magnetic field through a first section (106) of the plurality of sections, the first magnetic field being applied by a first electromagnet (124) of the magnetohydrodynamic pump (114), the first electromagnet (124) being an alternating current electromagnet, the coolant being an electrically conducting fluid comprising ferromagnetic particles; a substrate (126) comprising a second section (108) of the plurality of sections, the second section (108) being for fluidic communication of the coolant and for positioning adjacent the component; and a magnetic refrigerator (109) configured to, after heat is absorbed by the coolant in the second section (108) of the coolant circuit (104), cool the coolant by a magnetocaloric effect.

Methods and systems for forming break-away supports during additive manufacturing of objects via magnetohydrodynamic (MHD) jetting. In MHD jetting supports may be required for certain overhang areas and / or other features. On a surface or surfaces that will contact the object and / or a build plate (or the like), a plasma discharge may be conducted to create a treated surface. The treated surface bonds weakly with the support relative to inter-layer bonds between construction layers. Thus, after printing is complete the supports can be easily separated without strong mechanical forces that may have otherwise damaged the printed object.

Devices, systems, and methods are directed to applying magnetohydrodynamic forces to liquid metal to eject liquid metal along a controlled pattern, such as a controlled three-dimensional pattern as part of additive manufacturing of an object. Electric current delivered to a meniscus of the liquid metal in a quiescent state can be directed to exert a pullback force on the liquid metal. The pullback force can be sufficient to draw the liquid metal, in the quiescent state, in a direction toward the nozzle to reduce the likelihood of unintended wetting of surfaces of the nozzle between uses of the nozzle.

The invention relates to a temperature-control assembly (1) having a heat source (3) and a heat sink (5), wherein the heat source (3) absorbs heat from a magnetocaloric circuit (10) via a heat exchanger (18) and releases same to the outside, and the heat sink (5) releases heat absorbed from the outside to the magnetocaloric circuit (10) via a heat exchanger (18). The magnetocaloric circuit (10) comprises a closed channel system (14) for conducting a magnetocaloric medium (12), one of the heat exchangers (18) is designed as a heat exchanger (18A) into which a magnet device (16) and a magnetohydrodynamic pump module (20) are at least partly integrated, said pump module comprising an electrode device (22) which conducts an electric current through the magnetocaloric medium (12) at a channel portion (15) of the channel (14A) such that a Lorentz force is produced by the interaction with a magnetic field generated by the magnet device (16), said Lorentz force controlledly accelerating the magnetocaloric medium (12), and a resulting pressure build-up brings about a desired volume flow of the magnetocaloric medium (12) through the channel (14A), said magnetocaloric medium (12) being heated upon entering the magnetic field and cooled upon exiting the magnetic field.

An apparatus comprises: a power converter to convert DC current to AC current and supply the AC current to a load; a cooling loop having a cold plate thermally coupled to the power converter, and a magnetohydrodynamic (MHD) pump to pump a liquid metal coolant to the cold plate to cool the power converter; and an in-line rectifier, coupled to the power converter, the MHD pump, and the load, configured to: transfer the AC current, unrectified, between the power converter and the load; and rectify the AC current into a unipolar current that flows in a single current direction over a cycle of the AC current, and supply the unipolar current to the MHD pump to compel the MHD pump to pump the liquid metal coolant to the cold plate in a single coolant flow direction over the cycle.

The invention relates to an energy storage arrangement with a redox energy storage device (7) comprising several redox flow cells (8) and connected via two channel systems to two electrolyte containers, each containing an electrically conductive electrolyte (5), and an MHD module comprising an evaluation and control unit and, for each of the individual redox flow cells (8), two magnetohydrodynamic pump modules (20) integrated into the individual redox flow cells (8), wherein the evaluation and control unit is configured to control the magnetohydrodynamic pump modules (20) via at least one control unit (7.2), wherein the two magnetohydrodynamic pump modules (20) each comprise at least one magnet device (24) and one electrode device (22), which is configured to receive a signal from the control unit (7.2).2) to conduct the supplied electric current within the corresponding redox flow cell (8) through the corresponding electrically conductive electrolyte (5), so that, through interaction with a magnetic field generated by the magnetic device (24), a Lorentz force is created which selectively accelerates the electrically conductive electrolyte (5) within the corresponding redox flow cell (8), so that a resulting pressure build-up causes a desired volume flow of the electrically conductive electrolyte (5) through the corresponding channel system and the redox energy storage (7).

The invention relates to a temperature control assembly (10) for a plug-in electrical connection (1), which is arranged between a plug-in device (1A) and a receiving device (1B) and carries a load current (IL), and to a plug-in electrical connection (1) having such a temperature control assembly (10), comprising: at least one closed channel system (12), the closed channel system comprises at least one channel for guiding an electrically and thermally conductive medium and is thermally coupled to a plug-in device (1A) of the plug-in electrical connection (1) or to a receiving device (1B) of the plug-in electrical connection (1); and at least one magnetohydrodynamic pump (13) which is designed to accelerate the electrically conductive and thermally conductive medium in the at least one predetermined channel section (12.1) in a targeted manner such that the resulting pressure build-up causes a desired volume flow of the electrically conductive and thermally conductive medium through at least one channel of the at least one closed channel system (12), the volume flow is used for adjusting the temperature of the plug-in device (1A) or the receiving device (1B) of the plug-in electrical connection (1) through convective heat transfer.