37results about How to "Extended thermal path" patented technology

A thermally enhanced wiring board includes a heat sink, a stiffener and a build-up circuitry. The heat sink extends into an aperture of the stiffener and is thermally connected to the build-up circuitry. The build-up circuitry covers the heat sink and the stiffener and provides signal routing for the stiffener. The stiffener provides signal routing and mechanical support for the build-up circuitry.

The invention relates to a cooling structure for an ultraprecise linear motor and belongs to the technical field of linear motors. The cooling structure solves the problem of proneness to heat exchange with environment caused by high side temperature of two-side surface-mounted cooling structures of existing linear motors. The cooling structure comprises a winding supporting portion, a winding and a heat conductive portion, wherein the winding is fixed on the surface of the winding supporting portion, the heat conductive portion is arranged on the surface on the outer side and fixedly connected with the winding supporting portion, the heat conductive portion is a copper foil ring which fits the outer profile of the winding and is sleeved and fixed on the surface on the outer side of the winding, or the heat conductive portion is a copper foil heat conductive ring formed by arraying multiple copper foil sections in a dispersed manner, the copper coil heat conductive ring fits the outer profile of the winding, and each copper coil section is fixed on the surface on the outer side of the winding. The cooling structure for the ultraprecise linear motor is suitable for cooling of linear motors.

The invention relates to a driver casing (10). The driver casing (10) is characterized by comprising a first part (1) and a second part (2); the first part (1) is made of electrical insulating material, and the second part (2) is made of conducting material; and the first part (1) and the second part (2) are formed integrally, and the second part (2) extends out of the first part (1) and serves as the electrical connecting part of the driver casing (10). The invention also relates to a luminous device and a lamp. According to the luminous device and the lamp disclosed by the invention, the manufacturing technique is simple, the cost is low, and the heat dissipation capability is remarkably improved.

The invention discloses a vacuum isolation device for ultralow-temperature fluid transmission pipelines. The vacuum isolation device comprises a vacuum isolation flange connected with low-temperature pipelines in an ultralow-temperature area, a first low-temperature area and a second low-temperature area; each temperature area comprises a sleeve and a low-temperature pipeline extending out of the sleeve; the ultralow-temperature area is positioned at the center of the vacuum isolation flange, and the second low-temperature area is distributed on the outer periphery of the first low-temperature area which is distributed on the outer periphery of the ultralow-temperature area; the low-temperature pipeline in the ultralow-temperature area, the low-temperature pipeline in the first low-temperature area and the low-temperature pipeline in the second low-temperature area respectively penetrate the vacuum isolation flange, and one end of the sleeve of each temperature area is hermetically connected with the vacuum isolation flange; each sleeve is connected with the low-temperature pipeline in the last temperature area through a thermal stopper which is identical to the low-temperature pipeline in the last temperature area in temperature. The vacuum isolation device has the advantages that temperature gradient of vacuum isolation sleeves is optimized, and fluid consumption of the low-temperature areas is reduced.

The invention relates to a low-temperature vacuum pipe connector comprising a liquid access pipe (4), an inner casing (7), a middle casing (6), and an outer casing (1). The head of the liquid access pipe (4) is connected with the bottom of a vacuum pipeline inner pipe (11) through a liquid access pipe connecting joint (9). The head of the outer casing (1) is connected with a vacuum pipeline outer pipe (12). A fiberglass insulating hoop (2) and a retainer ring (3) are connected to the bottom of the outer casing (1). The fiberglass insulating hoop (2) and the retainer ring (3) below the same are sequentially sleeved outside the liquid access pipe (4). The low-temperature vacuum pipe connector is effective in thermal insulation, the liquid access pipe is protected from external impact and distortion, cracks at a weld are avoided, and reliable quality is ensured; in addition, a connecting ring I, the middling casing, the inner casing and a connecting ring III are assembled and welded to form a thermal bridge component, a heat conducting path is added, heat conduction is effectively reduced, and delivery of low-temperature liquid can be insusceptible to external ambient temperature.

The invention discloses a low-temperature storage device. The low-temperature storage device comprises an outer tank, shaft assemblies, an inner container and a driving assembly, wherein the inner container is arranged in the outer tank, and the driving assembly is arranged outside the outer tank. The inn container is connected and fixed with the outer tank. The center of the top of the outer tankand the center of the top of the inner container are provided with shaft holes for the shaft assemblies to penetrate. The shaft hole in the top of the outer tank is connected with the shaft hole in the top of the inner container through a corrugated pipe. First heat insulation assemblies for blocking airflow convection are arranged between the corrugated pipe and the shaft assemblies. The shaft assembly located inside the inner container is provided with an inner rotator for placing biological samples in different zones, and the shaft assembly located outside the outer tank is connected withthe driving assembly. Corresponding eccentric positions of the top of the outer tank and the top of the inner container are provided with object taking holes serving as biological sample taking and placing channels, and an openable heat preservation cover is arranged between the two object taking holes. The low-temperature storage device effectively reduces the loss of liquid nitrogen and has a better effect of storing the biological samples.

The invention relates to a heat dissipation device and method for high-power devices, belonging to the technical field of aerospace, in particular to the technical field of heat dissipation for high-power devices on aerospace vehicles. The present invention cooperates with the layout of the printed board, processes the graphite heat expansion plate, and makes a boss on the heat expansion plate corresponding to the position of the high-power device on the printed board; fixes the printed board with the welded components on the frame, and measures the high power The distance between the top surface of the device and the installation surface of the heat expansion plate is based on the measured distance, and the height of the heat dissipation boss of the graphite heat expansion plate is matched. Grease, for heat dissipation devices with pads on the abdomen, increase the heat conduction path.

The invention provides a thermal bridge blocking structure for an aircraft and a preparation method thereof. The thermal bridge blocking structure is located between the high temperature structure and the cold load bearing structure of the aircraft. The thermal bridge blocking structure includes a plurality of heat insulation units, A plurality of heat insulation units are stacked along the direction from the high temperature structure to the cold bearing structure, any heat insulation unit includes a first heat insulation part and a plurality of second heat insulation parts, and a plurality of second heat insulation parts are arranged at intervals on the first The heat insulation parts are distributed along one end face of the stacking direction and along the circumferential direction of the end face, and the projections of multiple second heat insulation parts of any two adjacent heat insulation units on the stacking direction are staggered to extend the high temperature structure and the cold load-bearing structure heat conduction path between. Applying the technical solution of the present invention can solve the technical problem in the prior art that the thermal bridge blocking structure has a poor heat insulation effect in a narrow space and thus cannot meet the heat insulation requirements of high-speed aircraft.

The invention provides a liquefied natural gas cylinder for vehicle and a heavy-duty truck using the liquefied natural gas cylinder for vehicle. A cryopump is connected to a hydraulic control system, a split type inside sleeve comprises a flange, a thin walled tube and a pedestal, and a thermal insulation layer is provided on the outer wall of the thin walled tube as well as between the flange and the pedestal; an overlay welding is carried out for an outside sleeve and the inside sleeve after positioning through a corresponding through hole and a corresponding tapped hole, grooves are respectively formed at bottom parts of the inside sleeve and the outside sleeve, an inverted V-shaped part is combined after connection, and a welding is carried out; a valve seat in a front end supporting device is provided with multifunctional holes, a liquid inlet tube, a liquid outlet tube, a blow-down tube, a liquidometer tube or a safety valve tube are installed in the holes, an over-filling preventing head and an over-filling preventing cylindrical shell are equipped, and the bottom of the over-filling preventing head is provided with a small hole; a rear end supporting device is provided with a small hole on a supporting head, so that the internal space of the supporting head is communicated with the space of the cylinder; a rear end supporting shaft sleeve is made of epoxy glass fiber reinforced plastic; front and back heads of an inner container are provided with molecular sieves; a head of a housing is provided with palladium oxide. The cryopump can be stably installed on the liquefied natural gas cylinder, and heat leakage is effectively reduced.

The present application discloses components for a service tower, a service tower body and a service tower. Components of the service tower include connection bases, connection pipes, return pipes, and cold head containers. The cold head secondary cylinder container is placed in the cold head container. The connecting seat has a through channel passing through the connecting seat, and at least one section of the connecting pipe is a flexible connecting pipe. The connecting pipe communicates with the through channel of the connecting seat and the return pipe communicates with the through channel of the connecting seat and the cold head secondary cylinder container in the cold head container, thus, the connecting seat, the The connecting pipe, the return pipe and the cold head container are integrated into one, so that the integrated service tower assembly can be connected to the cryogenic container through a connection port arranged on the top plate of the cryogenic container, thereby forming an overhead Compared with the way that the integrated service tower is often placed on the side of the superconducting magnet, the maximum liquid filling volume will be increased, the cooling effect will be improved, the structure is simple and the installation is also convenient.

The invention discloses a phase-change energy storage device. The phase-change energy storage device comprises a heat conduction piston cavity, a phase-change unit, a heat conduction piston, a limiting ring, a first spring, a heat conduction cap and a heat sink; the piston cavity and the heat sink are oppositely arranged on the front surface and the rear surface, the heat sink is arranged in front of the piston cavity, the front end of the piston cavity is open, and the rear end of the piston cavity is sealed; the piston is in sliding fit in the piston cavity, and the piston is in dynamic sealing with the inner wall of the piston cavity; the phase-change unit is filled in a cavity defined by the end part of the rear end of the piston and the piston cavity, the limiting ring is fixedly connected with the inner wall of the front end of the piston cavity, and the first spring is arranged between the limiting ring and the piston; and the two ends of the first spring are respectively abutted against the limiting ring and the piston, the heat conduction cap is connected with the front end of the piston, the front end of the heat conduction cap penetrates out of the piston cavity, and the heat sink is arranged in front of the heat conduction cap. The phase-change energy storage device can dissipate heat generated by high-power equipment on the basis of keeping a small size, the problem of thermal control of the high-power equipment on a satellite is solved, and normal operation of the equipment is guaranteed.

The present invention relates to an anti-freeze starter electromagnetic switch with a double-layer stationary contact, and the electromagnetic switch is characterized in that the central part of a movable contact piece is provided with a through hole; the lower end of a movable contact rod passes through the through hole of the movable contact piece, and a clamp spring is employed for limiting, so as to prevent the movable contact piece from being separated from the movable contact rod; the movable contact rod between an annular stopper boss and the movable contact piece is provided with a compression spring in a sleeved manner; The stationary contact consists of a screw rod and a double-layer stationary contact piece structure disposed at the top of the screw rod; the double-layer stationary contact piece structure consists of a lower stationary contact piece, an upper stationary contact piece and a spring piece between the lower stationary contact piece and the upper stationary contact piece; the spring piece is made of a bimetallic sheet which is deformed with temperature. The electromagnetic switch solves a problem of contact freezing fundamentally, is simple in structure, is low in cost, is small in size, is long in service life, is reliable for use, and is wide in application range.

The invention provides a vacuum thermal insulating plate and a refrigerator. The vacuum thermal insulating plate comprises a core material and a blocking membrane bag. A groove is formed in the side face of the core material. The core material is sealed in the blocking membrane bag. The blocking membrane bag is attached to the outer surface of the core material. The blocking membrane bag is attached to the inner wall face of the groove. By forming the groove in the side face of the vacuum thermal insulating plate, on one hand, the heat conduction route of the blocking membrane bag is lengthened, the heat conduction heat resistance of the blocking membrane bag is increased, and therefore the heat bridge effect in the vacuum thermal insulating plate is reduced, and the thermal insulating effect of the vacuum thermal insulating plate is improved; on the other hand, the contact area between the side face of the vacuum thermal insulating plate and a foamed layer is enlarged, the side face of the vacuum thermal insulating plate and the foamed layer are clamped, the adhesive force between the side face of the vacuum thermal insulating plate and the foamed layer is increased, the foamed layer and the vacuum thermal insulating plate are more firmly combined, and the disengagement phenomenon between the vacuum thermal insulating plate and the foamed layer is effectively avoided.