131results about How to "Increase thermal contact area" patented technology

A thermal interface material (TIM) includes a macromolecular material and carbon nanotubes embedded in the macromolecular material. The TIM has a first surface and an opposite second surface. Each nanotube is open at opposite ends thereof, and extends from the first surface to the second surface. Two ends of each nanotube extend out from the two surfaces of the thermal interface material and form two bent ends. A method for manufacturing the TIM includes: (a) forming an array of carbon nanotubes on a substrate; (b) submerging the nanotubes in a liquid paraffin; (c) solidifying the liquid paraffin; (d) cutting the paraffin in a direction perpendicular to long axes of the nanotubes, whereby each nanotube is open; and (e) cutting the paraffin in the same direction according to a predetermined thickness to obtain the thermal interface material, whereby each nanotube is open.

The invention discloses a recoverable flexible temperature sensing cable. A cable core is composed of three conductors and a supporting core. Each conductor comprises a wire and an insulating layer, wherein the wire is located in the middle, and the insulating layer coats the wire. The insulating layers are made of negative temperature coefficient heat sensitive material. The supporting core is composed of three metal supporting plates, and the included angle between every two adjacent metal supporting plates is 120 degrees. The three conductors are longitudinally arranged between every two adjacent metal supporting plates respectively, and the conductors adjoin to every two adjacent metal supporting plates adjacent to the corresponding conductors. A one-side metal and plastic composite belt coats the cable core, the metal layer of the one-side metal and plastic composite belt is arranged inwards, and the plastic layer of the one-side metal and plastic composite belt is arranged outwards. An inner sheath coats the one-side metal and plastic composite belt, an outer sheath coats the inner sheath, and a lubricating layer is arranged between the inner sheath and the outer sheath. The recoverable flexible temperature sensing cable is stable in structure and high in flexibility, and can be safely used in the overload or high temperature environment.

The invention relates to a silicon carbide micro-channel heat dissipation structure of a three-dimensional integrated circuit and a manufacturing method thereof, and mainly solves the problem that a micro-channel wall material is low in heat conductivity and small in contact area with the micro-channel wall in the prior art. The silicon carbide micro-channel heat dissipation structure comprises an upper chip (1) and a lower chip (2), wherein each chip comprises a circuit layer (3), a silicon substrate (4), a silicon channel wall (5), a silicon carbide channel wall (6), a micro-channel (7) and a silicon micro-channel cap (8) from top to bottom, wherein each circuit layer is positioned on the top of the front side of the corresponding chip, and each silicon substrate is adjacent to the corresponding circuit layer and is positioned below the corresponding circuit layer; each silicon channel wall is adjacent to the corresponding silicon substrate and is positioned below the corresponding silicon substrate; each silicon carbide channel wall epitaxially grows below the corresponding silicon channel wall; the cross section of each micro-channel is of an integral structure with a semi-elliptical upper part and a rectangular lower part, and each micro-channel is positioned below the corresponding silicon channel wall. The heat dissipation contact area close to the circuit layers is increased, the distances with the circuit layers are shortened, and the heat dissipation performance of the micro-channel heat dissipation structure is improved.

The invention relates to a rectangular plane magnetically controlled sputtering cathode, which is provided with a target, a cathode component and a shielding case which is arranged on the periphery of the cathode component, wherein a magnetic circuit mechanism is fixedly arranged on a target seat and is located inside a cathode body, the target is fixedly arranged on the lower portion of the target seat, and the cathode is characterized in that a magnetic conductive plate is arranged on the periphery of the cathode component and located on the inner side and the outer side of the shielding case in a whole circumference mode. The cathode of the invention can effectively increase the stability of a sputtering process and can increase the availability ratio of the target.

The invention provides a tab cooling structure of a battery pack, the battery pack and a vehicle with the battery pack. The tab cooling structure of the battery pack comprises tab connection pieces, insulating heat conduction blocks and liquid cooling plates, wherein the tab connection pieces are electrically connected with tabs of every two adjacent battery cells of the battery pack; clamping slots are formed in the insulating heat conduction blocks, and provided with first surfaces and second surfaces which are parallel to each other, and third surfaces connected with the first surfaces and the second surfaces; furthermore, connection parts, connected with the tabs of the battery cells, of the tab connection pieces are clamped in the clamping slots, so that at least the first surfaces and the second surfaces are respectively in surface contact with the two opposite side surfaces of the connection parts, and heat generated by the tabs can be exported to the insulating heat conduction blocks; the liquid cooling plate is in surface contact with the insulating heat conduction blocks; meanwhile, cooling liquid can flow through the liquid cooling plate to cool the insulating heat conduction blocks. The invention further provides the battery pack with the tab cooling structure and the vehicle with at least one battery pack.

The present invention relates to a heat sink having juxtaposed heat pipes and a method for manufacturing the same. The heat sink includes a base, a plurality of heat pipes and a pair of side strips. The base has a surface on which an open trough and an insertion trough on both sides of the open trough are provided. Each heat pipe has an evaporating section. The evaporating sections are juxtaposed in the open trough and adhered to each other. Each evaporating section has a planar surface. The side strips are fixed into the insertion troughs and protrude from the surface of the base. The planar surface of each evaporating section and the outer surface of each side strip are coplanar. By this structure, the thermal contact surface between the heat pipes and electronic heat-generating sources is increased, so that the heat-dissipating efficiency of the heat sink is improved.

An electronics assembly for a photovoltaic panel includes a substrate of a thermally conductive material, wherein the substrate defines a thermal contact area for thermally contacting the electronics assembly to a photovoltaic panel; and at least one electronic component provided on the substrate and in thermal contact with the substrate, so that when the electronics assembly is in thermal contact with the photovoltaic panel. The thermal contact provides a heat conductive channel between the at least one electronic component and the photovoltaic panel, wherein the heat conductive channel enables the electronics assembly to use the photovoltaic panel as a heat sink for heat produced by the at least one electronic component.

The invention discloses a preparation method of a ginkgo leaf extract, characterized by comprising the following steps of: (1) extracting pulverized ginkgo leaves by a C1-C2 alcohol or C1-C4 ketone solvent and an adverse gradient continuous extraction device, and filtering, wherein 200kg-260kg of ginkgo leaves are fed per hour, and 1.8m<3>-2.0m<3> of solvent is fed into the device per hour; (2) concentrating the filtrate by a film evaporator; (3) centrifuging the concentrated liquid by a centrifugal device; (4) extracting the centrifuged concentrated liquid by one or more ketone solvents; (5)enabling the extract liquid to pass through macroporous resin, taking the effluent liquid part; (6) concentrating the effluent liquid by a film evaporator; and (7) enabling the concentrated liquid topass through a sterilizing filter and performing spray drying. The quality index of the ginkgo leaf extract obtained by the method disclosed by the invention meets the standard of European bulk drugs, the quality and grade of the product are better improved, and the method is easier to implement.

A stick free frying pan with a highly antifriction highly thermo efficiency and manufacturing technique thereof is disclosed, which belongs to the household cooking utensil field. It comprises a pot body and a stick free layer installed inside the inner surface of the pot body. It is characterized in that the pot are designed to be a bi-part type structure of the pot wall(1) and pot bottom(3), and being rivet welded, melt welded and braze welded into a hybrid type pot body through dead joint member. Conduct supersonic speed electric arc spay coating uneven fine micro particle layer after the surface coarsening of the pot body and before the spray coating of the stick free layer. Compared with the prior arts, it has advantages of high efficiency, firm combination between the pot bottom and pot wall, high antifriction and long service life of the anti stick life and can fry the dish directly by stainless metal turner.

An LED lamp comprises a light-permeable lamp cover, a radiating base, LED light emitting units, a layout circuit conductive layer and a fixing mechanism, wherein the layout circuit conductive layer is connected with the LED light emitting units electrically, and the fixing mechanism is used for fixing the LED lamp at a set position. The LED light emitting units are fixed on the radiating base. The light-permeable lamp cover and the radiating base are mounted together to form a containing cavity for containing the LED light emitting units. The fixing mechanism is fixed on the radiating base directly, integrated to the radiating base, fixed on the light-permeable lamp cover directly, or integrated to the light-permeable lamp cover. Radiating through holes, which match with the LED light emitting units in arrangement, are further arranged among the LED light emitting units. Each LED light emitting unit is adjacent to the corresponding radiating through hole which penetrates through the light-permeable lamp cover and the radiating base. Both ends of each radiating through hole are communicated with air to form an air convection radiating passage. The LED lamp has the advantages that the LED lamp is simple in structure and effective in radiating, and the service life of the LED light emitting unit is long.

The invention relates to a portable central processing unit (CPU) controlled high-power electric welding machine. The electric welding machine comprises a CPU control circuit board, a radiator, an air fan and a shielding layer which are arranged in a shell; and a high-frequency resonant soft switch circuit which consists of four insulated gate bipolar transistor (IGBT) power transistors Q1, Q2, Q3 and Q4, two resonant inductors L1 and L2, a high-frequency transformer T1, two fast recovery diodes D1 and D2, an input filter capacitor C1, a resonant capacitor C2, an output filter capacitor C3 and a ferrite reactor L3 is also arranged in the shell. The CPU control circuit is adopted to realize digital button operation, a pulse width modulation (PWM) wave form is output by CPU given control current to control a driving transformer, the on/off of the IGBT power transistors is regulated to control the high-frequency transformer to do work, rectification is performed by the fast recovery diodes, the resonant inductors and the resonant capacitors play a role in realizing resonant frequency and feeding back energy, and the resonant frequency and the energy are finally output by the ferrite reactor. The CPU centralized control is realized; moreover, the high-power electric welding machine has low fault rate, high insulativity, a good dust blocking effect and long service life, is convenient to operate, saves energy, reduces consumption, prevents interference, and is low in production cost and use cost.

The invention relates to the technical field of FLIR (Forward Looking Infra-Red) thermal imagers, especially a shielding protection cover for an FLIR thermal imager. The cover comprises a protection housing, wherein side of the protection housing is provided with an air incoming channel, and the other side of the protection housing is provided with an air outgoing channel. The top of the protection housing is provided with an air exhaust channel. Air can move along the inner wall of a diffusion tube, and is exhausted from one end with the bigger diameter of the diffusion tube shaped like a circular truncated cone. Meanwhile, the end with the bigger diameter of the diffusion tube shaped like the circular truncated cone is greater than the height of the FLIR thermal imager, can achieve the heat dissipation of the whole FLIR thermal imager, and facilitates the increase of the heat dissipation contact area. When an air blowing disc makes contact with air, grids rotate with a rotating shaft, and air is exhausted from a gap between the two grids, thereby facilitating the dividing of air, and preventing the excessive temperature change of the FLIR thermal imager from causing the damages to the housing. A wind ball rotates to exhaust the hot air flow from the inside of the protection housing, thereby preventing the circulation of the hot air in the protection housing from causing impact on the heat dissipation efficiency.

A heat dissipation module used for an electronic device is provided. The electronic device has a heat source. The heat dissipation module includes an evaporator, a pipe, and a working fluid. The evaporator has a recess at an exterior surface of the evaporator, and the heat source is thermally contacted with the recess to transfer a heat generated from the heat source to the recess of the evaporator. The pipe is connected to an inner space of the evaporator and forms a loop. The working fluid is filled in the loop, wherein the working fluid in liquid passing through a portion of the inner space of the evaporator corresponding to the recess absorbs the heat and is transformed into vapor.

The invention discloses a 3D printing system suitable for a micro-gravity space environment. The 3D printing system comprises a housing (1) and a control unit (2) as well as a workbench (12) arrangedinside the housing (1), a base plate (11) arranged on the workbench (12), a feeding unit, and a processing head part, wherein the feeding unit comprises a storage device (4), a feeding mechanism (6) arranged at one end of the storage device (4) and an ejecting-out mechanism (3) arranged at the other end of the storage device (4); and the processing head part comprises a small laser unit (7). The invention further discloses a 3D printing method suitable for the micro-gravity space environment. The system avoids the crystallization risk that an amorphous alloy is connected and formed in a thermoplastic mode under a long-time high-temperature condition, can achieve coaxial feeding, is high in forming efficiency, guarantees uniform and continuous discharge, can form a part of any shape, can obtain a large-dimension amorphous alloy part with high forming quality, can keep good equipment work stability, and is especially suitable for on-track manufacturing in the space environment.

The invention relates to the field of drying equipment, in particular to a medium and energy internal recycle drying machine. The medium and energy internal recycle drying machine is characterized by comprising a drying machine body (1), a drying room (2) and a circle system; and the circle system comprises a draught fan (5), an evaporator (6), a compressor (7), an expansion valve (8), a condenser (9), a hot air internal flow passage (10), a hot air external flow passage (11), a water outlet pipe (12), a vertical hot air passage (13) and a cold air passage (14). According to the provided drying machine, in the drying process, a drying medium and heat energy of a process system recycle in the drying machine and are not discharged outside, the heat loss of exhausted gas does not exist, the material overheating phenomenon cannot occur, the drying process is gentle and stable, the drying quality is good, and the drying energy consumption is greatly saved; and meanwhile, the heat exchanging efficiency of a condensation room is greatly improved, the dehumidifying effect is intensified, and the ventilation power consumption is lowered.