12results about How to "Reduce convection" patented technology

This invention belongs to the field of heat dissipation structure technology, specifically an LED lamp heat dissipation structure. It includes heat dissipation fins, a bottom bracket fixedly connected to the bottom of the heat dissipation fins, and a top bracket detachably mounted on the top of the heat dissipation fins. A cooling fan facing the heat dissipation fins is fixedly connected to the top of the top bracket. The heat dissipation fins include a central ring and fins, with multiple fins arranged in a ring array on the outer circumference of the central ring. An outer peripheral baffle, capable of restoring its original shape, is fixedly connected to the outer end of each fin. The free end of the outer peripheral baffle can abut against the outer end of an adjacent fin, sealing the gap between adjacent fins. In this invention, when the cooling fan is activated, the entire heat dissipation fin forms a four-sided sealed ventilation structure. This effectively improves airflow convection at the LED lamp, reduces airflow convection at gaps, and allows more airflow to directly act on the LED lamp and its surrounding heat dissipation fins, thereby significantly improving heat dissipation efficiency.

The utility model provides a sliding type pet door, and relates to the technical field of pet doors, the sliding type pet door comprises a telescopic plate assembly, a sliding door upper door and a sliding door lower door, the telescopic plate assembly is arranged at the top of the sliding door upper door, the sliding door upper door is located at the top of the sliding door lower door, and the sliding door upper door and the sliding door lower door are fixedly connected through two sets of connecting rods; the sliding door upper door comprises upper door glass, an upper door frame is formed by combining two sets of upper door side stand columns and two sets of transverse stand columns on the periphery of the upper door glass, the upper door glass is fixedly connected with the upper door frame through upper glass sealing strips, and the upper glass sealing strips surround the periphery of the outer side of the upper door glass. The sliding door lower door is a lower door frame formed by combining two sets of lower door side stand columns and a base, and lower door glass is arranged in the middle of the upper end of the lower door frame. According to the sliding type pet door, convenience is provided for installation and use of the pet door, and in addition, the sliding type pet door further has the heat preservation effect.

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 invention relates to the technical field of building thermal insulation materials, and provides a fireproof rock wool thermal insulation board for buildings and a preparation method of the fireproof rock wool thermal insulation board. A fireproof rock wool insulation board for a building comprises a tensile fireproof layer, a bonding layer and an insulation fireproof layer which are sequentially arranged from top to bottom. The tensile fireproof layer comprises the following raw material components in parts by weight: 75-85 parts of rock wool fibers, 9-12 parts of a reinforcing agent and 3-5 parts of a water repellent; the reinforcing agent comprises chopped glass fibers and hydroxyl-terminated polycaprolactone in a mass ratio of 8: (1-2); the raw material of the bonding layer comprises water-based phenolic resin; the heat-preservation fireproof layer is prepared from the following raw material components in parts by weight: 75 to 80 parts of rock wool fiber, 5 to 10 parts of aluminum hydroxide, 3 to 5 parts of magnesium hydroxide and 2 to 5 parts of diatomite. Through the technical scheme, the problem of low tensile strength of the rock wool insulation board in the related technology is solved.

The utility model relates to an anti-crack heat preservation outer wall, including wall base, primer layer, mortar outer wall layer, imitation stone paint finish layer, imitation stone paint middle coating, be equipped with anti-crack heat preservation structure between mortar outer wall layer and imitation stone paint middle coating, its anti-crack heat preservation structure includes the curved plate and middle baffle, the curved plate is divided into multiple groups and is arranged through linear array, and the middle baffle is inserted into the curved plate, the middle baffle is hollow in the middle, and the rock wool filling layer is filled in the hollow, and secondly, the anti-crack heat preservation structure between mortar outer wall layer and imitation stone paint middle coating fills the heat preservation mortar and covers the curved plate, the middle baffle, the utility model solves the problem that the existing anti-crack heat preservation outer wall has the problem that the insufficient supporting force causes the poor anti-crack effect, and the heat preservation effect cannot be improved.

The utility model discloses a kind of flow guide structure and single crystal furnace applied to single crystal furnace hot field.The flow guide structure can include: flow guide cylinder and flow guide component, wherein, flow guide component includes first flow guide part and second flow guide part, first flow guide part extends from the outer periphery of the lower end opening of flow guide cylinder in the direction of radial away from the central axis of flow guide cylinder and simultaneously downwardly inclined relative to the lower end opening outer periphery of flow guide cylinder, second flow guide part extends from the extension end of first flow guide part in the direction of radial away from the central axis of flow guide cylinder and simultaneously upwardly inclined relative to first flow guide part.The flow guide structure can accelerate the argon flow rate passing through liquid surface, to take away more oxygen impurities, reduce the oxygen content of drawn single crystal silicon rod.

This invention belongs to the field of directional solidification of high-temperature alloys, and provides an engineering-applicable anti-gravity effect single-crystal high-temperature alloy directional solidification growth device and its application, which reduces the formation of interdendritic segregation, avoids the formation of defects such as freckles, and meets the actual needs of high-temperature alloy directional solidification blade preparation. The device structure is as follows: a vacuum induction furnace is set at the bottom of the device, and a crucible is placed inside it. The crucible is located on a crucible lifting mechanism, and a graphite holding furnace is set above the crucible. A pulling mechanism is set at the top of the device, and a water-cooling plate is set below it. The top of the mold shell has a seed crystal mounting port for installing the seed crystal, and the bottom has an alloy liquid inlet. After the mold shell and the seed crystal are assembled, they are fixed on the water-cooling plate by a fixing clamp. The device also includes a heat insulation baffle and a vacuum system. The heat insulation baffle with through holes is set parallel to the crucible above the graphite holding furnace, and the inner diameter of the through holes of the heat insulation baffle is 10-20 mm larger than the maximum outer diameter of the mold shell.

This invention relates to the field of carbonaceous material reactor technology, specifically to a slag melter, comprising: a combustion aid distribution ring, which is a pipe arranged in a ring around the outer periphery of a discharger; a first pipe connected to the combustion aid distribution ring to introduce combustion aid; a gas-liquid fuel distribution ring, which is a pipe arranged in a ring around the outer periphery of the discharger; a second pipe connected to the gas-liquid fuel distribution ring to introduce gas-liquid fuel; multiple burners connected to both the combustion aid distribution ring and the gas-liquid fuel distribution ring; the multiple burners generate flames and high-temperature flue gas, which, in conjunction with the discharger, agitate, mix, oxidize, heat, and lift inorganic residues to produce molten liquid inorganic residues; this application distributes gas-liquid fuels and combustion aids as needed, fully mixes and combusts them, generates a stable high-temperature flame to agitate the inorganic residues according to operational needs, and adjusts the temperature of the inorganic residues, maintaining the slag level of the inorganic residues and ensuring smooth discharge.

The utility model belongs to the field of sauce processing provides a kind of sauce three-dimensional heating cooking equipment, including cooking jar, the side wall of cooking jar is fixedly connected with feed pipe, the lower surface of cooking jar is fixedly connected with discharge pipe, the circumferential surface of cooking jar is fixedly installed with several evenly distributed heating fins, the two side walls of cooking jar are fixedly installed with support frame, the upper surface of support frame is fixedly installed with fixed column;The utility model can be heated by the side wall to sauce material by the several evenly distributed heating fins set in the circumferential surface of jar body, so that the heating in jar body is more uniform, while the stirring effect of equipment is improved by the variable pitch helical blade set, cooperate the use of stirring fin, while the sauce material adhered to the inner side wall of jar body can be stirred in the stirring process by the gear ring and scraper etc. set, reduce the problem that sauce material adheres in jar body and causes it to appear scorched, also can clean the inside of jar body after cooking.

The utility model discloses quartz crucible melts heat -proof plate heat preservation device, it includes water passing board, heat -proof plate, the bottom end face of water passing board is connected with the heat -proof plate of vertical setting respectively near four around edges, four heat -proof plates and water passing board form heat -proof area, and the top end of mould is placed in heat -proof area, the outer wall of heat -proof plate away from water passing board one side and the lateral wall of water passing board are connected through hinged member between, and the outer wall of remaining heat -proof plate and the lateral wall of water passing board are connected through adjusting member between, the inside of heat -proof plate is equipped with hollow chamber, and the hollow chamber is filled with circulating cooling water, and the outer wall of heat -proof plate is fixed with water inlet joint and water outlet joint respectively. Advantage: through water passing board increases heat -proof plate, can promote electric energy utilization rate, makes energy concentration between heat -proof plate and mould, through the path of blocking heat radiation and convection heat dissipation, energy loss is reduced significantly.

The utility model discloses a sample storage equipment sealing mechanism, including the storage cabin, be provided with the operation area on the storage cabin, the access channel in the operation area, be provided with multiple sets of sealing components on the access channel, multiple sets of sealing components can seal the access channel, and the access channel one side is provided with the gripper mechanism, and the gripper mechanism can drive sealing component movement, and expose partial access channel, and the gripper mechanism can access the board frame in the storage cabin through partial access channel. The utility model has the beneficial effects that by setting multiple sets of sealing components in the access channel, the storage cabin can be effectively sealed and heat-insulated, the sealing performance is improved, energy consumption is reduced, and energy cost is reduced. During the access process, only one set of sealing components is opened and one set of access opening is exposed, so that the gripper mechanism can be used to access the sample in the storage cabin; the area of cold and heat exchange can be effectively reduced, air convection is reduced, and better heat insulation is achieved.

The utility model particularly relates to a detachable easy-to-read temperature control packaging container which comprises a heat preservation box and a packaging box with a closed cavity defined by a bottom plate, side plates, a rear side plate, a top plate and a front side plate, and the heat preservation box comprises a first heat preservation structure, a second heat preservation structure, a third heat preservation structure and a fourth heat preservation structure, a second insulation board is vertically arranged in the middle of the second insulation structure, second wing plates are arranged on the upper side and the lower side of the second insulation structure, and the first insulation structure and the second insulation structure are matched to define a fully-enclosed insulation box; the upper portion of the front side plate is a folding plate, the folding plate of the packaging box is folded to form a front side opening structure of the closed cavity of the packaging box, a mounting groove is formed in the position, corresponding to the opening structure, of the front side face of the first heat preservation structure, and a temperature displayer is arranged in the mounting groove. The foldable heat preservation box has the advantages that the heat preservation box and the packaging box are both of a foldable structure which can be flatly laid, unfolded and stored, and the heat preservation box structure does not need to be opened in the whole process of cold-chain logistics.