377 results about "Coolant channel" patented technology

The utility model discloses a heat management integrated module mounting structure which comprises an agent side runner plate and a water side runner plate, a plurality of refrigerant channels are formed in the agent side runner plate, the outer surface of the agent side runner plate comprises a first mounting surface and a first connecting surface which are opposite in direction, the first mounting surface is provided with a plurality of agent side runner connectors, and the agent side runner connectors are connected with the first connecting surface. The plurality of refrigerant side runner interfaces are communicated with the plurality of refrigerant channels; a plurality of cooling liquid channels are formed in the water side flow channel plate, the outer surface of the water side flow channel plate comprises a second mounting surface and a second connecting surface which are opposite in direction, the second mounting surface is provided with a plurality of first water side flow channel connectors, and the first water side flow channel connectors communicate with the cooling liquid channels; and the second connecting surface is opposite to the first connecting surface and is fixedly connected with the first connecting surface. The utility model further discloses a vehicle with the same. The space utilization rate of the heat management system can be optimized, the flow resistance and heat loss of the system can be reduced, and the assembly convenience of the heat management component and the heat management object can be effectively improved.

The invention discloses a flow field peeping type PIV measuring system and method in a backflow combustion chamber, and belongs to the technical field of flow field measurement in the backflow combustion chamber of an aero-engine, the flow field peeping type PIV measuring system in the backflow combustion chamber comprises a cooling purging device and a laser endoscope and / or a camera endoscope arranged in the cooling purging device; a cooling liquid channel, a purging gas channel and an endoscope channel which are not communicated with one another are arranged in the cooling purging device; the cooling liquid channel comprises a cooling liquid inlet channel from the connecting end to the detection end and a cooling liquid outlet channel from the detection end to the connecting end; the purging gas channel comprises a gas inlet located at the connecting end and a gas outlet located at the detecting end. The detection end is provided with the airflow guide structure, so that the purging gas flows to the end face of the endoscope channel along the end face of the detection end in a wall-attached mode, a stable wall-attached airflow barrier is formed, high-temperature fuel gas and soot are prevented from making direct contact with the mirror face of the endoscope, and mirror face pollution is effectively prevented.

To mechanically relieve a drive device of an elastocaloric heat pump from the preload forces necessary to generate the elastocaloric effect by the elastocaloric elements, an elastocaloric heat pump (100) is proposed, comprising a housing (10), at least one first coolant channel (11) and a second coolant channel (12), at least two elastocaloric elements (15, 16), and at least one force transmission element (17), wherein each elastocaloric element (15, 16) has a first end (18) and a second end (19), wherein each elastocaloric element (15, 16) is connected to the housing (10) at its respective first end (18), and wherein each elastocaloric element (15, 16) is connected to the force transmission element (17) at its respective second end (19), and wherein the force transmission element (17) is provided to be a rocker arm. (20) with at least two lever arms (21, 22, 27) is,that the rocker arm (20) is rotatably mounted on the housing (10) about an axis of rotation, that a first elastocaloric element (15) of the at least two elastocaloric elements (15, 16) is connected at its second end (19) to a first lever arm (21) of the rocker arm (20), and that a second elastocaloric element (16) of the at least two elastocaloric elements (15, 16) is connected at its second end (19) to a second lever arm (22) of the rocker arm (20).

An electronic device includes an arithmetic unit layer and a power supply. The arithmetic unit layer comprises at least one arithmetic unit. Each arithmetic unit comprises a first housing in a shape of cuboid. A first side direction of the first housing extends in a first direction. The first housing is provided with first and second openings at both ends in the first side direction thereof to form a coolant passage extending in the first direction. The power supply is stacked with arithmetic unit layer in a second or a third direction. A first side direction of the power supply is aligned with the first side direction of each arithmetic unit. The power supply is provided with third and fourth openings at both ends in the first side direction thereof to form a coolant passage extending in the first side direction of the power supply.

The utility model provides a driving module cooling structure of an external rotor motor, which comprises a driver cooling seat and a plurality of driving modules, and the plurality of driving modules are circumferentially fixed on the peripheral wall of the driver cooling seat at intervals. Cooling cavities in one-to-one correspondence with the driving modules are formed in the outer wall of the driver cooling seat, an opening is formed in the outer end of each cooling cavity, and a power tube in each driving module is attached to the opening of the cooling cavity in the corresponding position and peripherally sealed with the driver cooling seat at the outer edge of the cooling cavity; a cooling liquid inlet and a cooling liquid outlet are formed in the driver cooling seat, the first cooling cavity is communicated with the cooling liquid inlet, the tail cooling cavity is communicated with the cooling liquid outlet, and every two adjacent cooling cavities are communicated through at least one cooling liquid channel; according to the utility model, the cooling effect and efficiency of the driving module in the external rotor motor can be improved, so that the driving module is prevented from being damaged due to overheating.

Disclosed in the present application are an inverter and a heat dissipation structure thereof. The heat dissipation structure of an inverter comprises: a first cabinet, a second cabinet, a liquid-cooling radiator and a first liquid-cooling heat exchanger, wherein the first cabinet comprises an electronic cavity; the liquid-cooling radiator is configured to perform heat dissipation on a power module of an inverter power module part, and a cooling liquid channel of the liquid-cooling radiator is in communication with a cooling liquid channel of the first liquid-cooling heat exchanger; the heat dissipation structure of an inverter is provided with a heat dissipation cavity, which is configured to allow air to flow through, so as to cool a cooling liquid in the first liquid-cooling heat exchanger; and the second cabinet comprises a direct-current power distribution cavity, an alternating-current power distribution cavity and a filtering reactance cavity, at least one of the direct-current power distribution cavity, the alternating-current power distribution cavity and the filtering reactance cavity forming a circulation air duct together with the electronic cavity. The heat dissipation structure of an inverter improves the heat dissipation efficiency, reduces heat dissipation costs, and further improves the protection performance of the entire inverter.

The invention discloses a device and a method for measuring the ice adhesion strength of an elastic coating under the action of periodic external force. The device comprises a refrigeration module, an ice adhesion strength measuring module and a control system, in the refrigeration module, a cooling liquid channel is arranged in the test base, the cooling liquid channel is connected with a refrigerating unit, and temperature equalizing table temperature measuring points are arranged in the temperature equalizing table at equal intervals in the vertical direction; the ice adhesion strength measuring module comprises an elastic coating arranged on the surface of the temperature equalizing table and a mold placed on the surface of the elastic coating, the two sides of the mold are connected with teletransmission tension meters through pull wires respectively, and each teletransmission tension meter is arranged on the motion platform; the control system controls all the modules to work coordinately, adjusts the refrigerating capacity to control the surface temperature of the low-temperature test, controls the size and frequency of the periodic acting force, collects and records data and calculates the ice adhesion strength. According to the invention, measurement and influence mechanism research on the ice adhesion strength of the elastic coating surface under different temperature conditions under the action of periodic external force can be realized.

A hybrid cooling tray for a battery pack, the tray having: a base defining a first end and a second end that are lengthwise spaced apart from each other and a first side and a second side that are widthwise spaced apart from each other, and wherein the base defines an inner surface and an outer surface; wherein the inner surface defines a coolant channel having an upstream end configured to receive a coolant flow and a downstream end configured to discharge the coolant flow, wherein the coolant channel defines a first transverse side and a second transverse side that extend between the upstream and downstream ends, and turbulators are disposed within the coolant channel between the upstream and downstream ends and define one or more of projections out of the base and impressions into the base, and wherein: at least two of the turbulators have a differing size, shape, pitch, yaw or roll orientation relative to each other; or a turbulator density per square unit area of the coolant channel differs from the upstream end to the downstream end of the coolant channel.

A stackable battery module for a battery system of a battery electric vehicle includes a plurality of battery cells and a battery module housing arranged to frame the plurality of battery cells. A plurality of battery modules interlock to form a battery module stack and laterally encase the battery module stack when several battery modules are stacked. The battery module includes centering elements arranged on the outside surfaces of the battery module housing to secure and center the stacked battery module inside a housing of the battery system. The battery module housing has a laterally framing tongue element and a laterally framing groove element corresponding to the tongue element. The tongue element of one battery module interlocks with the groove element of further battery module when the battery modules are stacked with an additional battery module to form a battery module stack and a coolant channel between the battery modules.

A particle beam system comprises: an object mount for mounting an object to be examined; a particle beam source; a lens for focusing the particle beam; a detector; and a cooling system for cooling the object mount. The cooling system comprises: a coolant passage through the object mount; a supply port; an outlet; a heat exchanger having two passages; a first connecting line connected to the inlet of the coolant passage and the first passage through the heat exchanger; a second connecting line connected to the outlet of the coolant passage and the second passage through the heat exchanger; a third connecting line connected to the first passage through the heat exchanger and the supply port; a fourth connecting line connected to the second passage through the heat exchanger and the outlet; and a cooling mechanism for cooling a portion of the first connecting line.

The invention relates to the technical field of machining equipment, in particular to drilling equipment for precise metal parts. The precise metal part punching device comprises a base, a clamp assembly for clamping a precise metal part, a punching assembly for punching the metal part, an adjusting assembly for adjusting the punching position and a cooling assembly for cooling the punching position. The punching assembly comprises a drill bit, a main shaft connected with the drill bit and a servo motor driving the main shaft to rotate. A liquid inlet through hole is formed in the handle portion of the drill bit, a liquid outlet through hole is formed in the cutting portion of the drill bit, and a cooling liquid channel communicated with the liquid inlet through hole and the liquid outlet through hole is formed in the drill bit. The cooling assembly cools the interior of the drill bit, cools the external punching area at the same time, and synchronously cleans and shields the inner wall of the extrusion part.

The invention relates to a doorsill beam assembly integrated with a heat exchange runner and a vehicle, and belongs to the technical field of vehicle cooling systems.The doorsill beam assembly comprises a doorsill beam body, and an exhaust channel and a cooling liquid channel are arranged in the doorsill beam body; the cooling liquid channel comprises a first cooling liquid channel adjacent to the exhaust channel and a second cooling liquid channel far away from the exhaust channel; the flow path switching device is arranged at the end part of the doorsill beam body, and the flow path switching device is configured to connect the first cooling liquid channel or the second cooling liquid channel into the cooling liquid loop in a switchable manner or isolate the first cooling liquid channel or the second cooling liquid channel from the cooling liquid loop; and the heat exchange efficiency between gas and liquid in the doorsill beam body is adjusted by selecting the position of the channel through which the cooling liquid flows. According to the heat requirement of the load, liquid is selected to flow through the cooling liquid channel adjacent to the exhaust channel or the cooling liquid channel away from the exhaust channel, the heat exchange efficiency can be adjusted, and the heat using requirements of different working conditions are met.

The invention relates to the technical field of electronic equipment cooling, in particular to a liquid cooling cabinet with heat dissipation and airtight protection functions, which comprises a cabinet body, and the cabinet body is of a rectangular hollow box body structure with an open front end; a partition plate is arranged in the cabinet body; the top plate, the bottom plate, the left side plate, the right side plate and the partition plate of the cabinet body are internally provided with flow channels, the flow channels in the top plate, the bottom plate, the left side plate and the right side plate of the cabinet body and the flow channels in the partition plate jointly form a cooling liquid channel, and the outer wall of the right side plate of the cabinet body is provided with a first pipe connector and a second pipe connector. The first pipe joint is communicated with a water inlet of the cooling liquid channel; the second pipe joint is communicated with a water outlet of the cooling liquid channel; the front end face of the cabinet body is provided with a door plate. And a plurality of fans are arranged on a rear panel of the cabinet body. As the cooling liquid channel is located in the top plate, the bottom plate, the left side plate and the right side plate of the cabinet body and in the partition plate, the internal space of the cabinet body is not occupied.

A traction battery (1) for a motor vehicle (100) is proposed, comprising a plurality of battery cells (2) and a plurality of cooling surfaces (3) arranged between the battery cells (2). The cooling surfaces (3) are fluidically connected to a coolant channel (4) for the flow of a coolant through them. The coolant channel (4) has plug-in elements (5), each associated with a cooling surface (3) and plugged together at plug-in areas (6) for fluidic connection. A leakage line (7) is provided for collecting and removing coolant escaping from the coolant channel (4) and / or from the cooling surfaces (3). A motor vehicle (100) is also proposed.

Provided in the embodiments of the present application are a heat dissipation system and a charging pile. The heat dissipation system comprises a heat dissipation device and a charging device. The heat dissipation device comprises a heat exchanger, and the heat exchanger has a cooling liquid channel and a heat-exchange liquid channel. Each of a cooling liquid inlet and a cooling liquid outlet of the cooling liquid channel is in communication with a charging main body, such that cooling liquid in the charging main body circulates through the cooling liquid channel. Each of a heat-exchange liquid inlet and a heat-exchange liquid outlet of the heat-exchange liquid channel is used for communication with an external cooling device, such that heat-exchange liquid in the external cooling device circulates through the heat-exchange liquid channel. The heat-exchange liquid flowing through the heat-exchange liquid channel is used for cooling the cooling liquid flowing through the cooling liquid channel. The technical solution provided in the embodiments of the present application can improve the heat dissipation effect of the charging device, helping to meet growing heat dissipation demands of the charging device.

A liquid-cooled integrated cable for an 800A charging gun is characterized in that a DC + liquid-cooled charging wire, a DC-liquid-cooled charging wire, a grounding wire and a plurality of auxiliary wires are wrapped in an insulating jacket of the liquid-cooled integrated cable, cooling liquid channels and wires are arranged in the DC + liquid-cooled charging wire and the DC-liquid-cooled charging wire, and the cooling liquid channels and the wires are connected between liquid-cooled terminals and liquid-cooled electrodes. The number of the DC + liquid cooling charging wires is two, the number of the DC-liquid cooling charging wires is two, and the two cooling liquid channels in the two DC + liquid cooling charging wires or the two DC-liquid cooling charging wires are communicated through a liquid cooling terminal to form a cooling loop. Under the condition that the liquid cooling integrated cable safely bears 800A current, the wire diameter is greatly reduced, the wire diameter is only 26mm, and the bending radius is within 200mm. According to the liquid cooling integrated cable, the layout structure of each wire is optimized, gaps are reduced, the roundness of the cable is increased, and anisotropy of the cable in the bending direction is eliminated. The liquid-cooled integrated cable has the advantages of being thin, light and flexible, and the flexibility and experience feeling of charging operation are greatly improved.

An electrical machine assembly includes a shaft rotatable about an axis of an electric machine and first and second endcaps mounted to the shaft. The first endcap includes a first endcap coolant channel. The second endcap includes a second endcap coolant channel. A rotor is mounted to the shaft axially between the first and second endcaps. The rotor includes first rotor coolant channels and second rotor coolant channels. The first rotor coolant channels are configured to communicate liquid coolant that is received from the first endcap coolant channel axially through the rotor in a first direction. The second rotor coolant channels are configured to communicate liquid coolant that is received from the second endcap coolant channel axially through the rotor in a second direction that is opposite the first direction.

The invention relates to an integrated plate heat exchanger with a liquid storage function, which comprises a water-cooling condensation module and a heat regeneration module which are connected through a middle connecting plate. The water-cooling condensation module is provided with a cooling liquid channel and a refrigerant channel which are formed by alternately stacked laminations, and the water-cooling condensation module is used for cooling a refrigerant; the heat return module is provided with a refrigerant high-pressure channel and a refrigerant low-pressure channel which are formed by a plurality of layers of laminations, and heat exchange between high-pressure refrigerants and low-pressure refrigerants is achieved. The heat regeneration module further comprises a liquid storage cavity and a drying bottle which are used for storing the supercooled liquid refrigerant and absorbing water correspondingly. And the refrigerant flows out from the refrigerant high-pressure outlet after being dried and filtered. The structure integrates multiple functions of the water-cooling condenser, the liquid storage tank and the heat regenerator, the number of system pipelines and the number of parts are reduced, and the risk of system refrigerant leakage is reduced. And the drying bottle adopts a detachable design and is convenient to maintain and replace. In addition, the size and the weight of the heat exchanger are reduced through modular design, the integration and the production efficiency of the heat management system are improved, and the heat management system is suitable for the electric vehicle heat management system needing compact space layout.

The utility model relates to the technical field of new energy batteries, and discloses an integrated battery module of a new energy automobile. The module shell is formed by sequentially connecting and enclosing a first frame, a second frame and a side frame end to end; the first insulating layers are respectively arranged among the first frame, the second frame, the side frame, the separation frame and the battery core, the second insulating layers are arranged between the side frame and the battery core, and the first insulating layers and the second insulating layers are insulating blocks with hollow middle parts; and the cooling liquid channel is arranged in the inner cavity of the first frame, and cooling liquid circulates in the cooling liquid channel. According to the battery module disclosed by the utility model, rapid heat conduction and heat dissipation can be conveniently carried out on electrical property in the battery module, and meanwhile, the insulation cost is effectively reduced by arranging the insulating layer which is partially designed to be hollow between the battery cell and the frame.

A cooling floor member (100A) cools a battery cell and includes a metal floor base material (101), a flat sheet-like metal floor sheet (102), and a partition member (105) that is a thermoplastic resin composition (106), and a region surrounded by the metal floor base material (101), the flat sheet-like metal floor sheet (102), and the partition member (105) is a cooling liquid channel (104) through which a cooling liquid flows. The metal floor base material (101) or the flat sheet-like metal floor sheet (102) or a combination thereof has a polypropylene layer (160) or a polycarbonate unit-containing polyurethane layer (161). The metal floor base material (101) or the flat sheet-like metal floor sheet (102) or a combination thereof is joined to the partition member (105) via a compatible layer (140) between the polypropylene layer (160) or the polycarbonate unit-containing polyurethane layer (161) and the thermoplastic resin composition (106).

The invention provides a fire-fighting liquid cooling device for a battery charging and replacing cabinet. Comprising a plurality of liquid cooling plates, a plurality of water receiving trays, a water collecting tank, a water tank, a booster pump, a water chilling unit, a main liquid inlet pipe, a plurality of cooling liquid inlet branch pipes, a plurality of cooling liquid return branch pipes, a cooling liquid return main pipe, a liquid cooling valve, a fire fighting liquid inlet main pipe, a fire fighting valve, a plurality of fire fighting liquid inlet branch pipes, a plurality of fire fighting liquid return branch pipes, a fire fighting liquid return main pipe, a circulating pump and a controller, wherein a cooling liquid channel and a fire-fighting liquid channel which are separated from each other are formed in the liquid cooling plate, and a plurality of spraying openings which are respectively communicated with the fire-fighting liquid channel are formed in the lower surface of the liquid cooling plate. When the battery temperature exceeds a first preset threshold value, the controller controls the fire valve to be closed and the liquid cooling valve to be opened, so that the liquid cooling plate heats or cools the battery pack; and when the battery temperature exceeds a second preset threshold value, the controller controls the fire valve to be opened and the liquid cooling valve to be closed, so that the liquid cooling plate cools and sprays water to the battery pack at the same time.

The invention relates to the technical field of cables, in particular to a medium-voltage fire-resistant cable structure. The double-layer cooling liquid channel is arranged and comprises the inner-layer cooling liquid channel and the outer-layer cooling liquid channel, the outer-layer cooling liquid channel is a water inlet channel, the inner-layer cooling liquid channel is a water outlet channel, temperature monitoring is carried out in combination with the built-in temperature measuring optical fiber, and then the water flow is controlled and adjusted. The temperature of the cable can be effectively controlled, and stable operation can be ensured under a full-load condition.

The utility model discloses a novel permanent magnet synchronous double-shaft type grinding motorized spindle, which relates to the technical field of machining and comprises a driving shaft and a driven shaft, the driving shaft is provided with a rear machine body, a stator assembly, a rotor assembly, an upper bearing assembly, an aluminum water jacket and a lower bearing gland, and the driven shaft is integrally arranged at the lower end of the driving shaft. The driven shaft comprises a front machine body, a coupler, a driven bearing assembly, a dustproof cover, a dustproof cap assembly and a grinding wheel assembly. According to the double-shaft type grinding electric spindle, the rigidity is improved by optimizing the bearing span, the double shafts are connected through the plum blossom type elastic coupler buffer pad, the deep hole grinding integrated forming technology is achieved, deep holes within 300 mm can be machined at a time, meanwhile, the efficiency and the power density are improved through the permanent magnet synchronous motor, the spindle is designed to be provided with a cooling liquid channel, and a cutter is cooled in real time; machining precision is improved, space and cost are saved, and the performance and the service life of the motorized spindle are comprehensively improved.

A hybrid photovoltaic thermal (PVT) system including flexible integration of spectral splitting optical filtration and thermal management utilities is described. An optical filtration (OF) channel is provided above a PV panel of the hybrid PVT system, wherein an OF fluid in the OF channel transmits a first light that is within a predefined spectral range and absorbs a second light that is outside the predefined spectral range. A cooling fluid (CF) channel is provided below the PV panel, wherein the CF channel contains a cooling fluid. A phase change material (PCM) layer is provided between the PV panel and the CF channel, wherein at least one of the OF fluid in the OF channel, the cooling fluid in the CF channel, or the PCM layer contains nanoparticles.

The utility model provides a double-water-outlet system for cooling a battery pack and an energy storage converter in parallel, and relates to the technical field of electrochemistry. An outlet of a cooling liquid channel of a plate heat exchanger is communicated with a liquid supply port of a cooling liquid channel of the battery pack through an electric heater; a liquid return opening of the battery pack cooling liquid channel is communicated with a cooling liquid channel inlet of the plate heat exchanger through a first water pump; an exhaust port of the compressor communicates with a refrigerant channel inlet of the plate heat exchanger through the first heat exchanger, and a refrigerant channel outlet of the plate heat exchanger communicates with an air inlet of the compressor. An outlet of the second heat exchanger communicates with a liquid supply opening of the cooling liquid channel of the energy storage converter, and a liquid return opening of the cooling liquid channel of the energy storage converter communicates with an inlet of the second heat exchanger through a second water pump. The lithium battery pack and the energy storage converter are subjected to temperature control in two modes, the energy consumption of the temperature control system is saved by using a natural cold source, and the total energy consumption and the wasted energy consumption are reduced.

The invention provides a stator core with cooling channels. A cooling liquid channel (L) for cooling liquid to pass through is formed in the stator core, two axial ends of the stator core are respectively provided with a plurality of end oil injection channels (L0), the end oil injection channels (L0) are communicated with the cooling liquid channel (L), the cooling liquid channel (L) forms a cylindrical enveloping range in the stator core, and the end oil injection channels (L0) are communicated with the end oil injection channels (L0). Under the condition that the stator iron core is installed in place, the end oil injection channel (L0) is only located on the upper semicircular part of a cross section circle on the cross section circle perpendicular to the axial direction of the stator iron core. According to the invention, the end oil injection channel is only located at the upper semicircular part of the stator cross section circle, so that the amount of the cooling liquid injected to the winding coil is larger under the same cooling liquid flow, and the part of the cooling liquid can be distributed to the whole winding coil by virtue of gravity after being injected, so that the cooling liquid is more fully utilized.

The invention discloses a coarse precision adjustable facing cutter with a fine tuning unit, and relates to the technical field of facing cutters, the coarse precision adjustable facing cutter comprises a facing cutter assembly, the facing cutter assembly comprises a cutter body, a cutter body is fixed on the cutter body, a mounting sleeve is fixed on the top of the cutter body, and a ring frame is fixed between the mounting sleeve and the surface of the cutter body; a first screw groove and a second screw groove are formed in the disc body, a first screw and a second screw are movably connected into the cutter body, one end of the first screw is in threaded connection with the first screw groove, and one end of the second screw is in threaded connection with the second screw groove. Fine adjustment and coarse precision adjustment can be carried out through the adjusting mechanism under the cooperation of the milling cutter assembly, adjustment is convenient after installation, the influence on the workpiece machining precision is reduced, a cooling liquid channel on the milling cutter can be actively closed through the liquid discharging mechanism under the cooperation of the adjusting mechanism during adjustment, and the machining precision is improved. And residual cooling liquid in the milling cutter continuously flows out in the adjusting process, so that the efficiency and the positioning precision are improved.

A device for cooling or temperature control for at least one storage module of a rechargeable battery includes multiple coolant channels, through which a coolant flows in the same direction, and at least one of the coolant channels includes a cross-sectional constriction element with a passage cross-section for the coolant.

The present invention discloses a cooling sharing device for a direct-drive outer rotor steel sleeve wire drawing machine motor, which relates to the field of motors and includes a main shaft, a coolant channel is arranged through the main shaft; a steel sleeve outer shell is sleeved on the outer periphery of a rotor casing, a gap is arranged between the steel sleeve outer shell and the rotor casing, the bottom of the steel sleeve outer shell is supported on an auxiliary support ring, the auxiliary support ring is sleeved on the outer periphery of the rotor casing, so that a closed cooling cavity is formed between the steel sleeve outer shell, the rotor casing and the auxiliary support ring for accommodating coolant, one end of the water inlet pipe is connected to the outer shell coolant pipeline, and the other end of the water inlet pipe penetrates into the cooling cavity from the top of the steel sleeve outer shell; a plurality of drainage holes are provided on the auxiliary support ring, and the water outlet pipe penetrates into the cooling cavity from the drainage holes. The beneficial effects of the present invention are: compact structure, using an outer rotor motor without a reduction mechanism; cooling sharing, a constant water level cooling system ensures reliable cooling, and at the same time solves the heat dissipation problem of the heat generated by the motor rotor and the wire drawing steel sleeve.

A particle beam system is disclosed, comprising a fixture for holding an object under investigation, a particle beam source, a lens for focusing the particle beam, a detector, and a cooling system for cooling the fixture. The cooling system includes a coolant passage in the fixture, a supply port, an outlet, a two-position changeover valve, a first connecting line linked to the coolant passage and the changeover valve, a second connecting line linked to the coolant passage and the changeover valve, and a cooler for cooling a portion of the first connecting line. In its first position, the changeover valve connects the supply port to the first connecting line and the outlet to the second connecting line; in its second position, it connects the supply port to the second connecting line and the outlet to the first connecting line.