14results about How to "Increase the effective cooling area" patented technology

The invention relates to a method for preparing a heterostructure magnesium alloy based on low-temperature friction stir additive in the field of metal processing, and designs a high-quality and high-efficiency cooling tool, which mainly comprises the following steps: firstly, cooling alcohol to low temperature by using liquid nitrogen; then the magnesium alloy plate to be machined is fixed to a cooling tool in a lap joint mode, and the tool mainly comprises a device body (1), a cooling liquid inflow hole (2), a cooling liquid outflow hole (3), a workpiece containing groove (4), a liquid storage chamber (5), a pressing plate (6) and fastening screws (7); then low-temperature alcohol is introduced, an advancing path and technological parameters are set, first-layer stirring friction additive manufacturing is conducted, and in the machining process, a stirring head and a workpiece are always kept to be submerged in cooling liquid; then, the surface obtained after material adding is milled to be flat, a layer of plate is overlaid on the other unmachined surface again, and the plate is fixed into the workpiece containing groove; and finally, second-layer friction stir additive manufacturing is conducted on the other face of the plate according to the same parameters and the same path. The method can be suitable for additive manufacturing of low-melting-point metal such as magnesium alloy and aluminum alloy at the same time, the multi-scale gradient heterostructure magnesium alloy can be prepared at the same time, the preparation efficiency is improved, and high-quality and low-cost preparation of heterostructure materials is achieved.

This invention provides a cooling circulation device for a wind turbine nacelle, comprising a nacelle, with a cooling circulation mechanism installed on the upper part of the nacelle. The cooling circulation mechanism includes an upper cover and a lower cover; the upper and lower covers are fixedly connected to each other, and the bottom opening of the lower cover communicates with the upper part of the nacelle; a circulation pump is fixedly installed inside the upper cover, with the output end of the circulation pump connected to a first circulation pipe and the input end connected to a second circulation pipe. This invention constructs a closed cooling circuit on the top of the nacelle, consisting of a circulation pump, circulation pipes, and upper and lower double-layered serpentine coils, enabling the coolant to circulate continuously within the nacelle and perform large-area heat exchange, achieving uniform absorption and rapid conduction of heat from the nacelle; the upper and lower serpentine coils are stacked, expanding the effective heat dissipation area, allowing the device to maintain stable heat dissipation efficiency even during high-load power generation, thereby ensuring the long-term reliable operation of the power generation system.

The utility model relates to computer heat dissipation technical field especially is publicize a kind of vertical straight contact type heat tower radiator of evaporation end, including fixed base, fixed buckle, heat pipe, the evaporation end of multiple heat pipe is vertically fixed in fixed base, and the fixed base is fixed on the heat dissipation surface by fixed buckle.Affinity effect lies in: the evaporation end of heat pipe directly contacts CPU surface with vertical mode, and adopts honeycomb matrix type arrangement, breaks the restriction of traditional horizontal layout to heat pipe quantity, and the number of heat pipe that can be accommodated under same area is realized substantial increase, forms a "three-dimensional heat equalizing bucket", effectively reduces thermal resistance, significantly improves heat conduction performance.

This utility model relates to the field of automotive parts technology, specifically an automotive brake disc, including an outer disc body and an inner disc body disposed on the back of the outer disc body. A connecting member is disposed between the outer disc body and the inner disc body. The outer disc body has several first heat dissipation holes, which are connected to the interior of a heat dissipation cavity. This automotive brake disc, through the coordinated use of the outer disc body, inner disc body, heat dissipation cavity, connecting member, first heat dissipation holes, mounting part, mounting hole, and second heat dissipation holes, allows for rapid heat generation due to friction between the brake disc and brake pads during braking. The heat dissipation grooves, first heat dissipation holes, and second heat dissipation holes on the surfaces of the outer and inner disc bodies, with their unique structure and layout, guide air to form a complex airflow when the brake disc rotates, increasing the contact time and area between the air and the brake disc surface, significantly improving heat exchange efficiency and enhancing heat dissipation performance. Furthermore, the heat dissipation grooves increase the effective heat dissipation area of ​​the brake disc.

The present invention relates to a core-moving autofocus camera module, which solves the problems of the existing core-moving autofocus camera's flexible circuit board being easily offset when moving, occupying a large space, and having poor heat dissipation. The module comprises a housing, a lens arranged on the housing, a circuit board arranged in the housing, an image sensor, a position sensor, and a driving mechanism. When in use, the position sensor is used to detect the displacement of the image sensor to achieve automatic focusing; when the circuit board body moves upward, the deformation support part restores to provide a downward restoring force to the support connection part; when the circuit board body moves downward, the deformation support part restores to provide an upward restoring force to the support connection part at the same time. When the camera module is not working, the restoring force will reset the movable seat to reduce the impact of the movable seat on other parts and abnormal noise caused by external vibration; in addition, the circuit board body is not easy to tilt when moving up and down, the positioning is accurate, and the space occupied is small. Furthermore, the heat dissipation efficiency of the image sensor is improved.

The utility model belongs to the technical field of automobile parts, and provides an element heat dissipation structure which comprises a heat conduction substrate installed on an element, the top of the heat conduction substrate is provided with a plurality of grooves arranged in parallel, each groove is internally provided with a phase change heat conduction layer, the back face of the heat conduction substrate is provided with a plurality of first-level fins distributed in parallel at intervals, and the first-level fins are arranged in parallel at intervals. Secondary fins are arranged between the opposite surfaces of every two adjacent primary fins, the secondary fins are obliquely arranged, a flow guide channel is formed between every two secondary fins, and an airflow guide cover is arranged at the top of the heat conduction substrate; according to the utility model, by arranging the heat dissipation device, heat dissipation can be carried out on elements with insufficient heat dissipation, so that the situation that the temperature of the elements is too high is effectively avoided, and the safety is improved.

The utility model discloses a heat dissipation structure at the bottom of a crankshaft box body, which comprises the crankshaft box body, a crankshaft box cooling air duct is arranged at the bottom of the crankshaft box body, and the crankshaft box cooling air duct penetrates from the input end side of the crankshaft box body to the output end side of the crankshaft box body; the side, close to the input end, of the crankcase cooling air duct is provided with an air supply outlet. The crankcase has the beneficial effects that the non-straight cooling air duct at the bottom of the crankcase body prolongs the residence time of cooling air in the air duct, increases the effective cooling area and improves the cooling efficiency of the cooling air flowing through the bottom of the crankcase body, so that the running oil temperature of an engine is effectively reduced, the running stability of the engine is improved, and the service life of the engine is prolonged. The service life of the engine is prolonged.

This invention discloses a MEMS synthetic jet heat sink and array heat sink based on an asymmetric dual-diaphragm and a top-surface through-flow channel, comprising a PCB substrate, a silicon substrate, a first piezoelectric diaphragm, a second piezoelectric diaphragm, and a top frame. The lower surface of the PCB substrate is used for mounting to a heat source and is a complete plane; the silicon substrate is disposed on the PCB substrate, and a vibration cavity is formed within the silicon substrate; the first and second piezoelectric diaphragms are sealed and connected to the silicon substrate, and together enclose the vibration cavity; the two piezoelectric diaphragms are arranged asymmetrically relative to the PCB substrate; the top frame is disposed above the first and second piezoelectric diaphragms and connected to the PCB substrate; the top frame has an opening; the opening communicates with the vibration cavity, together forming a top-surface through-flow bidirectional channel, so that the air intake and exhaust processes of the heat sink are completed through the top-surface through-flow bidirectional channel.

The utility model provides a kind of grain air conditioner arc-shaped radiator structure, including shell, condenser, air inlet, air outlet and vent are set up on shell, evaporator and fan are connected in shell, evaporator corresponds with air inlet, fan corresponds with air outlet, condenser corresponds with vent, compressor is connected in shell, compressor is connected with condenser, evaporator, condenser is connected with evaporator by expansion valve, auxiliary port is set up on shell, auxiliary port and vent are located on the two side walls adjacent of shell, vent, air inlet and air outlet are located on the same side of shell, condenser includes L-shaped fin, bracket and copper pipe, copper pipe is connected on bracket, multiple L-shaped fins are connected on copper pipe and along the height direction of bracket arrangement, one side of L-shaped fin corresponds with vent, another side of L-shaped fin corresponds with auxiliary port, reach the purpose of improving heat dissipation performance.

The utility model relates to the technical field of photovoltaic power devices, and discloses a photovoltaic-based reverse connection prevention device, which comprises a device box, a device element is fixedly arranged in the device box, the right side of the device element is fixedly connected with a plurality of element pins, the plurality of element pins penetrate through the side wall of the device box, and the device box is fixedly connected with the device element. Heat absorption nets are arranged on the upper side and the lower side of the device box, a positioning box is connected to the outer side of the device box in a sleeving mode, inserting grooves are formed in the upper side and the lower side of the positioning box, and positioning grooves are formed in the two side walls of the two inserting grooves. According to the photovoltaic-based reverse connection prevention device, through the positioning box and the heat dissipation box which are arranged on the outer side of the device box, the positioning box and the device box can be fixedly connected by screwing fixing bolts, and limiting blocks enter limiting grooves under the action of positioning springs, so that the heat dissipation box is fixedly connected with the positioning box and the device box; and therefore, the cooling fins start to carry out heat dissipation work under the action of the telescopic springs.

The invention discloses a cutting blade and a cutting tool, and relates to the field of cutters, the cutting blade comprises a top surface, a bottom surface and side surfaces, the top surface and the bottom surface are oppositely arranged along the thickness direction of the cutting blade, the side surfaces are respectively connected with the top surface and the bottom surface, and the top surface and the bottom surface are oppositely arranged along the thickness direction of the cutting blade. A cutting edge is formed at the joint of the side surface and the top surface; wherein the top surface comprises a margin surface, a front cutter surface and a groove part which are connected in sequence, the margin surface extends in the extending direction of the cutting edge, a plurality of notch parts which are distributed at intervals in the extending direction of the cutting edge are formed in the surface of the margin surface, the front cutter surface obliquely extends from the margin surface to the groove part, and the notch parts are distributed at intervals in the extending direction of the cutting edge. And a plurality of convex parts which are arranged in sequence are formed on the surface of the groove part. According to the cutting blade provided by the embodiment of the invention, local high temperature and thermal stress concentration can be reduced, the heat dissipation efficiency is improved, and the service life of a cutting tool is effectively prolonged.

The utility model provides a pipeline annular weld detection device's imaging board, including imaging panel, communication box and connecting frame, wherein, the imaging panel includes casing and a plurality of heat dissipation blocks, the heat dissipation block is integrally formed on the casing, and a plurality of heat dissipation blocks are arranged in the matrix spacing mode, the communication box is fixed with bolt setting on the casing, and is in close contact with the heat dissipation block and is away from the one side of casing, the connecting frame is fixed setting on the casing, is used for with walking frame fixed connection. The utility model discloses a plurality of heat dissipation blocks are set up on the casing, can increase the effective heat dissipation area of imaging board, intensifies the convection heat transfer effect of imaging board position to improve the heat dissipation effect of imaging board, guarantees the normal operation of imaging board.

The invention discloses a casting die head for film production and casting film production equipment. A die head body of the casting die head is provided with a material injection opening, a transverse seam-shaped outlet and a plurality of heat dissipation grooves which are transversely arranged side by side, and notches of the heat dissipation grooves are exposed for heat dissipation. According to the cast film production equipment, raw materials are heated and melted into molten materials through an extruder, the molten materials are injected into an inner runner of a die head from a material injection opening of the cast die head, and a transverse seam-shaped outlet of the cast die head is aligned with a cooling roller so that sheet-shaped material bodies formed by extruding the molten materials outwards can flow onto the cooling roller; and the cooling roller is used for quenching and shaping the sheet-shaped material body to prepare a thin film. According to the casting die head, the heat dissipation groove is formed in the die head body, and the groove opening of the heat dissipation groove is exposed, so that the effective heat dissipation area of the die head is remarkably increased, and the die head is not prone to overheating in the production process. The multiple heat dissipation grooves are arranged in parallel in the transverse direction and are consistent with the transverse seam-shaped outlet in direction, so that the temperature of the die head body can be uniformly distributed, and local overheating is effectively avoided.

The utility model discloses an LED court lamp capable of being spliced. The LED court lamp comprises a power source assembly, a plurality of lighting assemblies, a mounting assembly, a first lampshade shell, a second lampshade shell and a splicing assembly arranged between the top of the first lampshade shell and the top of the second lampshade shell. The first lampshade shell is provided with a power supply bin with a bottom opening and at least one lighting bin, and the second lampshade shell is provided with at least one lighting bin with a bottom opening; a plurality of radiating fins which are arranged in parallel are arranged at the tops of the first lampshade shell and the second lampshade shell corresponding to the lighting bin; the radiating fins on the first lampshade shell and the radiating fins on the second lampshade shell are connected in a one-to-one correspondence mode, so that a radiating channel is formed between every two adjacent radiating fins. The two ends of each heat dissipation channel are each provided with a flow guide hole, the flow guide hole in one end is formed in the first lampshade shell, and the flow guide hole in the other end is formed in the second lampshade shell. Heat interference is reduced, the effective heat dissipation area is increased, the lighting power of the lamp can be adjusted according to actual requirements, and water and dust can be effectively prevented from being accumulated on the top of the first lampshade shell and the top of the second lampshade shell.