1261 results about "Air convection" patented technology

The invention discloses a ventilation device, which aims to solve the problem that the conventional ventilation device does not have an air adjusting function. The device comprises a pedestal, a high-speed air blower and an annular ejector, wherein the high-speed air blower is arranged at the bottom of the pedestal; the annular ejector is arranged at an air outlet of the high-speed air blower and is fixed on the pedestal; and the air inlet or the air outlet of the high-speed air blower is provided with a vapor generator which is fixed on the pedestal for producing water vapor. In the ventilation device, the water vapor is produced through the vapor generator and is ejected through an atomization nozzle at a high speed to produce fog of smaller granularity, so that a hot air flow can more easily absorb the latent heat of vaporization, and the ventilation device has a humidification effect and a heat absorption and temperature reduction effect on a large amount of hot air sucked by the annular nozzle, and brings comfortable cool air similar to air on the shore of a lake or a sea to the surrounding environment. In the ventilation device, an external circulating device is not required to be mounted, so the cost is low; the space is not required to be closed, so that air convection is guaranteed; and the ventilation device is more energy-saving in the same temperature reduction range compared with a fan and an air conditioner, and can be used conveniently and safely.

A flat radiator with flat type heat pipe and its application for portable computers is provided. The heat pipe in a radiator use tubular type and plate type structures. An air convective extended heat exchange surface surrounds and is over against the fan impeller, such that the radiator is extremely compacted, and the heat transport distance in heat pipe is shortened. Further introducing enhanced convective heat transfer structure and setting the fins according to the aerodynamics improve the heat dissipating capacity. The restrictions to a radiator when installing are reduced, which helps to implement the standardization of the radiator series. Also portable computers using the radiator are provided.

The invention provides a keeping warm flocculus which is prepared from raw material by weight including 56%-85% fine denier fibre and/or super fine denier fibre, 0-30% hollow fibre, 5-30% felt fibre. The preparing method includes steps as follows: loosing and mixing various fibre raw material; then combing, lapping for forming fibre net; then processing disorder drafting to the felt net for forming solid net shape crossing struture; then heating and baking the felt net, at least melting surface of the felt fibre for felting surrounding fibre. The fine denier fibre can increase content of still air in the keeping warm flocculus, reduce heat quantity conduction, and can divide space in the keeping warm flocculus into smaller space for avoiding or reducing air convection, accordingly increase warm keeping property of the keeping warm flocculus; the hollow fibre can increase filling power and compress rebound property of the warm keeping flocculus; filling power and compress rebound property of the warm keeping flocculus are increased after being disorder draft.

A three-dimensional heating multifunctional wok comprises a wok cover hinged on a wok body. A cooking cavity with a container inside is arranged in the wok body, an overturning device is arranged in the container, and an upper auxiliary heating component is disposed on the wok cover and corresponds to the top of the container, generates heat flow and thermal radiation to heat the top and the side of food; a lower main heating component is disposed on the wok body and corresponds to the bottom of the container and is used for heating the bottom of the food in a conduction manner; and a heating air flue which circulates internally surrounding the container is disposed in the wok cover or the wok body. The relatively hermetic cooking cavity is formed by the wok body and the wok cover in a surrounding way, a transparent cover which can cover on the upper auxiliary heating component is disposed on the wok cover, and the edge of the transparent cover and the cooking cavity are closed oppositely; and the heating air flue surrounds the top of the wok cover or surrounds the outside of the cooking cavity of the wok body. By the aid of the internal circulating heating air flue, air convection is generated in the container, three-dimensional heating of the food is realized, heating area of the food is maximized, heating is more uniform, and the problem that the food is heated unevenly is thoroughly resolved.

The invention relates to a wavelength conversion device with a cooling structure baseplate. The wavelength conversion device comprises the baseplate, and a fluorescence pink wheel sheet layer and an airflow disturbance structure which are arranged on the same side of the baseplate or on the different sides of the baseplate. By using the airflow disturbance structure, a driving device drives a light emitting device to rotate at high speed, and cross-ventilation above the surface of the baseplate is greatly improved, so that the heat dissipation capacity of the baseplate is enhanced; a heat dissipation baseplate is provided, and a double-layer heat dissipation mode is realized by heat conduction and air convection, so that the heat dissipation capacity is further improved, and the efficiency of a wavelength conversion material is ensured; and the airflow disturbance structure is in a fan blade mode, the shape and the processing mode of the airflow disturbance structure can be flexibly selected according to specific conditions, the structure is simple and the heat dissipation capacity is excellent.

The invention discloses a method for preparing potassium hexatitanate whisker composite SiO2 aerogel thermal insulation material, which comprises the steps of adopting a potassium hexatitanate whisker as a reinforcing phase, utilizing a coupling agent for the surface modification of the potassium hexatitanate whisker, preparing a SiO2 gel precursor at the same time, mixing and stirring the modified potassium hexatitanate whisker and the SiO2 gel precursor, keeping stand to gelatinate, aging to obtain SiO2 gel containing the potassium hexatitanate whisker, then performing supercritical drying and heat treatment through a high pressure kettle, and obtaining the potassium hexatitanate whisker composite SiO2 aerogel thermal insulation material. The composite thermal insulation material has good barrier function on solid heat transfer and air convection heat transfer, can effectively block infrared radiation heat transfer at the same time, has heat conductivity coefficient of between 0.01 and 0.015w/m.k at normal temperature, and improves 3 to 5 times of strength than SiO2 aerogel. The method has wide application range, and can meet operating requirements of more harsh thermal protection conditions of aviation, spaceflight, military affairs and civil use.

A solar energy power generator comprises a solar energy heating device for absorbing solar energy for heating medium flowing therethrough; a secondary heating device for further heating medium flowing through the solar energy heating device so as to generate air convection; and a power generator for generating electric power by air convection for driving a load. The solar energy heating device and the secondary heating device heat air so that air convection generates in the hot air convection space so as to drive the power generator to generate electric power for driving a load.

An exciter for directly vibrating a board treated for dustproofing and heat dissipation, provided with a vibrator comprised of an outer yoke, a permanent magnet, and inner yoke, having a coil fixed inserted between the outer yoke and inner yoke, and having a coupler member for coupling the exciter to the surface of the board. The coupler member and vibrator are connected by an elastic member. A closed space is formed in the exciter by providing a sealing member between the outer yoke and coupler member. A through hole is formed in the outer yoke. Due to the vibration-of the vibrator at the time of coil excitation, air convection is caused through the through hole between the closed space and the outside space.

Two-phase, boiling heat transfer in confined channels close to a source of heat, such as an electrical component or device, carries the latent heat of vapors away to remote locations where “real estate” demands of air convection are tolerable operationally, economically, and technologically. Liquid-to-vapor, phase-change, heat transfer in a narrow channel (e.g., typically less than 0.200 inches total thickness, and often less than 0.150 in the channel itself) improves by several hundred percent the heat extraction from modest temperature (e.g., about 120 degree F.) devices, when compared to heat fluxes in pool boiling. Saturated working fluids provide nearly isothermal conditions in the working fluid. Minimal conduction paths provide minimal temperature gradients, and capillary action may maintain nearly constant temperature conditions about a surface of a heat source, while carrying heat of vaporization away to a condensation location.

The invention relates to composite pavement temperature measurement of an underground road. The purposes of the invention are to make a research on a method for predicating the temperature of a pavement at any time and in any position and preferably instruct pavement structural and material design of the underground road. In order to achieve the purposes, a technical scheme adopted in the invention is as follows: a method for establishing a composite pavement temperature field model of the underground road is characterized by comprising the following steps: actually measuring a composite pavement temperature field of the underground road; carrying out heat transfer theoretical analysis, air convection heat exchange and air radiation heat exchange on the composite pavement temperature field of the underground road; from basic principles of climatology and heat transfer theory, analyzing the temperature field and temperature stress of the underground road pavement by using a two-dimensional elastic layer theory system according to actual situations of a pavement structure; and making the following basic assumptions. The method is mainly applied to the temperature measurement of the composite pavement of the underground road.

A high efficiency thermoelectric cooling system and method is described. The cooling system comprises a thermoelectric module having a semi-conductor body sandwiched in contact between a pair of thermally conductive plates. A power supply having converter circuit means provides a smooth continuous variable output direct current supply to the semi-conductor body to attenuate thermal stress in the conductive plates due to temperature differential fluctuation across the plates. One of the plates is a cold plate and the other a hot plate caused by current flow in the semi-conductor body transferring heat from the cold plate to the hot plate. A cold heat sink is associated with the cold plate to absorb heat from the insulted enclosure to cool the enclosure. A heat convection assembly including a hot heat sink evacuates heat from the hot plate to effectively manage the temperature differential across the plates. A mounting assembly is adapted to secure the thermoelectric cooling device to a wall of the insulated enclosure with the heat convection means disposed exteriorly of the insulated enclosure. An air convection housing may be provided to evacuate heat from the hot heat sink using an outside air supply or ambient air supply and using fans and gates to displace and channel the air flow.

The invention relates to the technical field of dish washing machines, and provides a drying machine and a dish washing machine. The drying machine comprises an inner container, the side wall of the inner container is connected with an air inlet mechanism and an exhaust mechanism, the air inlet mechanism comprises an air inlet pipe, the side wall of the inner container is provided with an air inlet hole and an exhaust hole, the air inlet hole and the exhaust hole are distributed at different heights, and the air inlet pipe is connected with the air inlet hole; the exhaust mechanism comprises an exhaust motor and an exhaust pipe, and the two ends of the exhaust pipe are connected with the exhaust motor and the exhaust hole respectively. After tableware in the dish washing machine is rinsed, outside air enters the inner container through the air inlet hole, the exhaust motor pumps the air in the inner container through the exhaust hole, and the air is exhausted outside through the exhaust pipe; the air inlet hole and the exhaust hole are distributed at different heights, so that air convection is formed in the inner container, the drying effect is greatly improved, energy consumption is lowered, air convection is smooth, noise is low, the structure is simple, and potential safety hazards are avoided.

The invention discloses a heat insulation flocculus which is made from the following fiber: 10-64wt/% of fine denier fiber and/or superfine denier fiber, 31-80wt/% of hollow fiber and 5-30wt/% of tacky fiber. The heat insulation flocculus is manufactured by the following method: shredding and mixing various fiber raw materials; carding and spreading webs to form a fiber web; then performing random drafting on the fiber web to cause the fiber web to form a 3D network crossed structure; heating and baking the fiber web to cause at least the surface layer of the tacky fiber to be melted, and binding the surrounding fiber of the fiber web. The use of the fine denier fiber greatly increases the content of still air in the heat insulation flocculus, reduces heat conduction, can divide the space in the heat insulation flocculus into smaller spaces, and prevents or reduces air convection, thus improving the heat insulation performance of the insulation flocculus; the hollow fiber can improve bulkiness and compression resilience of the heat insulation flocculus; and the random drafting causes the bulkiness and the compression resilience of the heat insulation flocculus to be higher.

A food cooking and heating cabinet having a closed air convection system consisting of a variable speed blower in a air heating chamber for circulating air past a variable heating element, through a food holding oven, and back to the air heating chamber, a control for selecting a desired temperature to be maintained in the food holding oven, and means for comparing the temperature at the outlet and the inlet of the heating chamber to the selected temperature causing the air variable heating element to operate and the speed of the blower to increase when more heat is required and reduces both heat and blower speed as the need for the higher heat and air flow is no longer required, and when preset parameters are reached automatically sets the temperature to a preset temperature and holds the heated product to the predetermined temperature.

The invention relates to a steam sterilization system used in the fields of microbial fermentation production, the food production and pharmacy, etc and a sterilization and cooling method thereof, wherein, the system comprises a steam sterilization tank in which high temperature steam can be pumped, and the steam sterilization tank is provided with a conventional steam inlet and a steam exhaust port, as well as an air inlet and an air outlet; an air pump is connected to the air inlet through an air filter; the air outlet communicates with a sterilized space through a segment of air transmission pipe. The steam sterilization system and the sterilization and cooling method thereof can speed up the sterilized cooling process in the mode of air convection and meanwhile reuse the sterilized air which participates in the cooling, with good sterilization effect.

The invention discloses a baking oven with a uniform large-air-volume hot air convection barbecuing function. The baking oven comprises a centrifugal fan which is arranged between a baking oven shell and a baking oven chamber and is positioned on the top of the baking oven chamber, a plurality of baking tubes which run through the baking oven chamber, and a grill arranged in the baking oven chamber, wherein air outlets and an air return outlet are formed on the top wall of the chamber; flow deflection fans which can circulate the heat on both sides in the chamber are arranged on left and right sides of the baking oven chamber between the baking oven shell and the baking oven chamber respectively; lateral air outlets and lateral air return outlets which correspond to the flow deflection fans are formed on the wall on left and right sides of the baking oven chamber. In the baking oven, the centrifugal fan blows air from the upper part, and cross flow fans blow air from both sides, so that the uniform large-air-volume hot air convection circulation is formed, the temperature is uniformly distributed, the heat exchange area for food is large, the utilization rate of the heat is high, and the baking oven is favorable for the baking of flaky and large food. The upper and lower parts of the baking oven chamber can ensure the uniform flow of hot air after a baking tray is placed. A setting mode of the cross flow fans can also be used for microwave ovens.

The present invention relates to a wind collecting type cylindrical horizontal-shaft generating system, which is provided with a high tower; wherein, the top end of the high tower is provided with a gyrator (2); a hollow shell (11) and a wind-collecting cover (12) are fixed on the gyrator (2); tail fins (13) are arranged on the rear end of the shell (11); an aerogenerator (14) provided with wind wheels (141) is mounted in the shell (11); the high tower is a hollow wind duct (3); a plurality of air inlets (31) are arranged on the sidewall of the lower end of the wind duct (3); the gyrator (2) is hollow; a wind-guiding cover (4) which is communicated with the wind duct (3) is arranged on the gyrator (2); the air outlet end of the wind-guiding cover (4) guides the air flow in the wind duct (3) to a neighboring wind wheel (141). While utilizing the outside wind energy, the generating system also ingeniously guides the upward air flow generated by the air convection caused by geothermal energy to the wind wheels of the aerogenerator through the wind duct, so that the wind wheels are blown to rotate, so the generating system can simultaneously effectively utilize geothermal energy and wind energy to generate electricity.

The U-shaped afterheat utilizing annealing furnace below roller includes a material stage, a furnace below roller, an elevating mechanism, a transmission system and a vacuum changing chamber. Heat insulating layer is set inside the furnace below roller to separate the furnace into independent upper part and lower part for simultaneous heat treatment of metal workpiece in high treating amount. The present invention utilizes afterheat to raise the energy utilization rate and has no air convection to reduce oxidation and decarbonization of metal workpiece.

The invention relates to a novel ventilating pipeline wind power generation system and a generator. With the help of air convection and upward draft of wind in a ventilating pipeline, fresh air naturally flows into a fresh air collecting channel chamber from a fresh air inlet of a second floor equipment room on the ground, enters into an air-supplying stand pipe 3 in a basement by virtue of an air-supplying pipeline 2 in an empty space of the basement, and then enters rooms on each floor by virtue of a main vertical air-supplying pipeline 41 on an outdoor south warming wall and lateral air-supplying branched pipelines 42 and 42' on each floor. An electric wind driven generator is used for solving the problem that the natural wind power in an air flue can not achieve the wind power level for delivering and exhausting air and starting the wind driven generator to generate, thereby providing a system which is free from wind field influence and completely utilizes a novel ventilating pipeline system for construction and a wind generating set system arranged in a pipeline of the novel ventilating pipeline system and composed of multiple minitype wind generating sets to generate electricity while performing ventilating air conditioning, so as to greatly lower the costs of ventilating air conditioning and wind power generation.

The invention relates to the technical field of surface cleaning, in particular to a composite cleaning method and device. The device mainly comprises a laser generator, an ultrasonic wave generationdevice and a unified moving platform. The laser generator and the ultrasonic wave generation device are fixed to the unified moving platform. The upper end of the ultrasonic wave generation device isprovided with an opening. During cleaning, a workpiece is put into the ultrasonic wave generation device, cleaning liquid is added, and after the positions of the laser generator and the workpiece areadjusted, cleaning is started. According to the composite cleaning method and device, through the composite ultrasonic and laser cleaning method, high-frequency ultrasonic vibration perpendicular tothe surface of the workpiece is applied to the workpiece in the laser cleaning process, the air convection coefficient of an action zone is increased, the dirt peeling and disengaging speed is increased, the cleaning quality is improved, and the cleaning speed is increased, so that the problems that existing cleaning methods and cleaning devices are low in cleaning efficiency and unthorough in cleaning are solved.

An LED lamp includes an illumination apparatus and a heat-dissipating waterproof cover. The illumination apparatus includes LED modules; and the heat-dissipating waterproof cover is configured to cover the LED modules. The heat-dissipating waterproof cover includes a plurality of drain members, and a gap is formed between every two drain members so as to increase the air convection, thereby increasing heat dissipation efficiency of the LED modules. Every two adjacent drain members are partially overlapping in vertical to prevent the intrusion of water.

The invention relates to an inner and outer heat insulation hollow casement window structure. A framework structure comprises a left side frame, a right side frame and a central column positioned between the left side frame and a right side frame; a fixed glass window is arranged in a left groove and a right groove formed by the left side frame and the central column, a window sash is arranged between the central column and the right side frame and mounted on the right side frame; a first outer heat insulation part, a second outer heat insulation part and a third outer heat insulation part are respectively arranged on the outdoor sides of the left side frame, the central column and the right side frame, a first inner heat insulation part, a second inner heat insulation part, a third innerheat insulation part, a fourth inner heat insulation part and a fifth inner heat insulation part are respectively arranged on the indoor sides of the left side frame, the central column and the rightside frame, the fixed glass window and the window sash are in hollow structures formed by a plurality of layers of glass, and the multiple layers of the glass are hermetically connected through heat insulation sealing parts. The inner and outer heat insulation hollow casement window structure is simple in structure, convenient to manufacture and assembly; the contact area between an aluminum profile and atmosphere tends to be zero, the heat exchange of an aluminum alloy framework caused by air convection can be prevented, thereby improving the heat insulation performance and achieving the purpose of saving energy.

The invention relates to an LED light source module which has a heat conductivity system and a radiation system. The invention is used in a direct illumination-type BLU, comprising a circuit board, and a plurality of LEDs which are electrically connected, wherein the lights that are sent out by the LED is irradiated on an LCD trough a light diffusion component, a light reflection component which can reflect backwards the leaking light of the LED is arranged on the other side of the circuit board, and the above components are evenly arranged in a casing, wherein a layer of heat conductivity translucent material is coated on the LED, a heat insulation translucent component is arranged between the heat conductivity translucent material and the light diffusion component, a radiation space is formed between the heat insulation translucent component and the heat conductivity translucent material, and the casing forms at least two air convection hole relatively to the radiation space, thereby flowing out and radiating heat sent out by the LED as soon as possible, reducing temperature in the LED light source module, steadying the color balance of the module, and prolonging the service life of the module.

The present invention relates to a radiating method of a LED lamp of an air convection bin. The present invention is characterized in that an air convection bin and an air convection channel are arranged around a circuit board, a power source and a constant current source in a LED lamp casing body; the air convection bin is composed of radiating plates and the air convection channel is composed of the radiating plate and the casing body, a ventilation hole is arranged on the radiating plate, a matched air input hole and an air output hole are arranged on the casing body, the radiating structure which is formed by the radiating plate and the radiating slice is arranged in the air convection bin and at the periphery of the air convection bin, cold air current can enter into the casing body, the heat produced by the circuit board, the power and the constant current source during working is brought out of the casing body by the cold air current which passes through the air convection bin and the air current channel and passes through the cold-hot exchange of the cooling plate and the cooling slice, achieving the purpose of cooling; the air convection bin can carry away 25 percent heat in the casing body, thereby removing the accumulate effect of the heat during the LED lamp luminescence, and effectively solving the problems that the cooling of the high-power LED lamp is difficult, the cast is expensive and the LED lamp can not be commonly used.