30results about How to "Effective convection" patented technology

The invention relates to a preparation method for a solid-phase micro-extraction fiber bundle, and relates to preparation of the fiber bundle. The preparation method comprises the steps of (1) preparation of single SPME (solid-phase micro-extraction) fibers based on an integral material: mixing a monomer, a crosslinking agent, a pore-forming agent and an initiator to prepare a uniform solution, then injecting the uniform solution into a capillary which is 5-20cm long and of which the inner diameter is 0.2-0.8mm and the wall thickness is 0.05-0.2mm, sealing two ends of the capillary, performing polymerization, removing a section, which is 1-3cm long, of the capillary, putting the integral material fiber into a soxhlet extractor, performing extraction through a solvent, or putting the fiber into the solvent, and soaking the fiber until no impurity is detected from the liquid so as to obtain the single SPME fibers based on the integral material; (2) preparation of the solid-phase micro-extraction fiber bundle: combining 2-6 of the single SPME fibers based on the integral material on the capillary to obtain the solid-phase micro-extraction fiber bundle. The preparation method is simple, high in extraction capacity, high in extraction speed, low in cost and easy to operate.

The invention discloses an LED lamp based on compound heat dissipation technology, which comprises three parts: a shell unit, a lamp group unit and a power supply unit; the shell unit uses a plastic lamp cap as a connecting body, and its upper part is connected with a metal lamp cap, and its lower part is connected with a metal lamp cap. The plastic or aluminum lamp housing is connected, and there are convection groove lamps engraved around the housing, and the outside is coated with black nano-radiation paint; the ceramic substrate of the lamp group unit and the aluminum plate are tightly welded through the silver foil of the ceramic substrate and the tin-plated layer of the aluminum plate, and the porous copper It is welded on the other side of the aluminum plate, and the LED tube is welded on the other side of the ceramic substrate. Due to the use of composite technologies such as ceramic substrates, porous copper and nano-coatings for heat dissipation, the heat dissipation methods of conduction, convection and radiation are fully utilized for effective heat dissipation, so that the power of LED lights can be made larger.

The invention discloses a fire-curing box which comprises a first box body (1), a second box body (2) and a third box body (3). The fire-curing box is characterized in that the first box body (1) comprises a smoke ventilator module (1-1) and a water tank module (1-2), the smoke ventilator module (1-1) comprises a smoke suction pipeline (1-1-1), a three-way valve (1-1-2), a smoke return pipeline (1-1-3) and a smoke exhaust pipeline (1-1-4), the water tank module (1-2) comprises a water tank body (1-2-1) and a smoke gas pipeline (1-2-2), the second box body (2) comprises a storage rack (2-1) and a first heat source (2-2), the third box body (3) comprises a smoke generation module (3-1), and the smoke generation module comprises a smoke material box (3-1-1), a second heat source (3-1-2) and a smoke pipeline (3-1-3).

An air cleaning device using water as a filter comprises a water tank, a water pump, a pressure equalizer and air-inhale tubes. The water tank includes an accommodation space for containing water, air inlets and air outlets. A cover hoods the water tank and has a water storage tank and air inlets. The water pump is disposed inside the water tank and connected with the pressure equalizer. Jet pipes of the pressure equalizer respectively interconnect with the air inlets through the air-inhale tubes. The water pump sucks the water in the accommodation space. Through the air-inhale tubes, the jet pipes inhale air in a jet fashion from exterior of the air inlets disposed in multiple directions. The air cleaning device can filter out the impurities in the air and fast clean the air of a large space. The present invention uses water as the filter and favors environmental protection.

The invention provides a sesame cooling and impurity removing device, and aims to solve the problems that impurities cannot be completely removed and the structure of sesame is easily broken in the cooling and impurity removing process of roasted sesame in the prior art. The sesame cooling and impurity removing device comprises a cylindrical rotating screen, a first air pipe, an impurity removing screen and a sesame collecting tank, the rotating screen is horizontally and rotatably arranged, a sesame inlet is formed in one end of the rotating screen, a sesame outlet is formed in the other end of the rotating screen, the sesame inlet is higher than the sesame outlet, impurity removing holes are formed in the side wall of the rotating screen, the size of each impurity removing hole is smaller than the particle size of the sesame, the first air pipe is arranged at the sesame inlet and used for blowing air into the rotating screen, so that the sesame is cooled, the impurity removing screen is obliquely arranged at the sesame outlet, impurity removing holes are formed in the impurity removing screen, the size of each impurity removing hole is larger than the particle size of the sesame, a vibrating motor is arranged on the impurity removing screen, and the sesame collecting tank is obliquely formed below the impurity removing screen. The sesame cooling and impurity removing device is simple in structure, convenient to use and excellent in practicability, the sesame can be effectively cooled, and impurities in the sesame are removed.

The invention discloses a clamp insulating structure of a dry-type transformer. The structure comprises clamp insulating parts, an upper clamp and a lower clamp, wherein the clamp insulating parts are arranged on the upper clamp and the lower clamp. Each clamp insulating part comprises a web plate, a support plate and buffer pads, wherein the buffer pads and the support plate are of parallelogram structures which are matched, the buffer pads adhere to the support plate, the set of buffer pads and the support plate adhere to the web plate in a spaced mode, and the web plate is fixed to the upper clamp and the lower clamp. Due to the fact that a heat radiation air channel is formed between the upper clamp and an iron core, heat in an original heat accumulation area is effectively released, and temperature rise of the transformer is reduced. A convection air channel between the lower clamp and the iron core enables air to enter the low portion of a coil smoothly, so that air convection is formed effectively and heat dissipation of the coil is guaranteed. The buffer pads and the support plates are small, and therefore sufficient utilization of materials is facilitated and raw materials are saved greatly.

The invention discloses a novel box-type transformer substation, relates to the technical field of transformer substations. The novel box-type transformer substation comprises a box and a base. The box is composed of wallboards on the periphery and a slope-shaped cover board at the top end. The novel box-type transformer substation is characterized in that each wallboard is composed of an outer wallboard, a vacuum board and an inner wallboard, and the vacuum boards are bonded between the inner wallboards and the outer wallboards; the slope-shaped cover board is composed of an upper cover board, a vacuum board and a lower cover board, and the vacuum board is bonded between the upper cover board and the lower cover board. The novel box-type transformer substation has high ventilation efficiency, is ventilated completely naturally without other apparatuses, and can effectively isolate external heat from the inside thereof and isolate substantial noises generated by instruments therein from the outside.

This invention relates to an air processor in simple structure without secondary air pollution including a shell and a blower fan characterizing that the front part of the inlet scoop of the fan is fixed with light catalysis with at least an edge fixed with an ultraviolet radiation lamp.

The invention provides a graphene electric heater. The graphene electric heater comprises a graphene carbon crystal heating plate and a housing; the back part of the graphene carbon crystal heating plate is provided with the housing; the upper part of the graphene carbon crystal heating plate is provided with an air discharging hole; the lower part of the graphene carbon crystal heating plate is provided with an air charging hole; and the air discharging hole and the air charging hole penetrate through a passage which is arranged between the graphene carbon crystal heating plate and the housing and communicate with each other to form air convection. The graphene electric heater has the advantages of being convenient and quick to assemble and beautiful in appearance, can prevent damages caused by cutting because the appearance is free of a cutting edge, can effectively form convection, and improves the heating effect.

The invention discloses a novel box-type transformer substation, and relates to the technical field of transformer substations. The novel box-type transformer substation comprises a box and a base. The box comprises peripheral upright columns, wall plates, a door and top slope-shaped cover plates. The novel box-type transformer substation is characterized in that at least one upright column ventilation opening is formed in the top of each slope-shaped cover plate. The novel box-type transformer substation has the advantages that the novel box-type transformer substation is high in ventilation efficiency, and a natural ventilation effect can be completely realized without the aid of other instruments; external heat can be effectively stopped from being transmitted into the box-type transformer substation, and a large quantity of noise generated by instruments in the box-type transformer substation can be effectively stopped from being transmitted to the outside of the box-type transformer substation; illuminating warning equipment is provided at night on the basis that an occupied space of the original box-type transformer substation is not enlarged, and the novel box-type transformer substation is attractive in appearance and simple in structure.

The invention discloses an LED surface light source spotlight easy to cool, and belongs to the technical field of LED lights. The LED surface light source spotlight is characterized by comprising an aluminum substrate, several LED lamp beads are distributed on the aluminum substrate, and a mounting frame is connected to the aluminum substrate through a connecting part; the mounting frame is composed of a mounting plate and at least two connecting plates arranged on the mounting plate in the length direction in a spaced mode, and the connecting plates are hinged to the connecting part. The invention aims at providing the LED surface light source spotlight which is compact and novel in structure, good in cooling effect, long in service life and easy to cool, and the LED surface light source spotlight is used for outdoor illumination and advertisement illumination.

The invention provides a method for manufacturing an edible fungus four-pipe baking oven. A fuel inlet is formed in the lower portion of the four-pipe baking oven, a smoke exhaust port is formed in the upper portion of the four-pipe baking oven, a first arc-shaped top plate, a first side plate, a second side plate, a first bottom plate, a grate bridge and a hearth are sequentially arranged in a burning region in the four-pipe baking oven, a second arc-shaped top plate, a first bearing plate, a third side plate, a fourth side plate, a first back plate, a first pipeline type heating pipe, a second pipeline type heating pipe, a third pipeline type heating pipe and a fourth pipeline type heating pipe are sequentially arranged on a heat conducting channel in the four-pipe baking oven, a second bearing plate, a fifth side plate, a sixth side plate, a second bottom plate, a second back plate, a first sealing cover, a second sealing cover, a third sealing cover and a fourth sealing cover are sequentially arranged on a dust remover in the middle of the four-pipe baking oven, and a mask plate, a seventh side plate, an eighth side plate, a third back plate, a third bottom plate, a first supporting column, a second supporting column and a connecting screw are sequentially arranged on a smoke guide outlet in the four-pipe baking oven. The edible fungus four-pipe baking oven is economical and applicable.

The invention relates to the field of indoor ventilation and discloses an active fresh air window and a method for achieving indoor ventilation, aiming to solve the problems that an existing central pipeline type fresh air system requires pipeline arrangement to cause space occupation and adopts a negative pressure mode to enable unclean air to enter rooms while a window-type ventilation system affects lighting. A bay window is mounted on the outer side of a wall and provided with an air inlet, a fresh air handling unit which is a positive-pressure unidirectional-flow fresh air handling unit is mounted on the bay window, an air inlet of the fresh air handling unit is communicated with outdoor air, and an air outlet of the fresh air handling unit is communicated with the air inlet of the bay window. The fresh air handling unit is used for blowing the outdoor air to the indoor, and indoor air is exhausted to the outdoor via an exhaust blower to form air convection. The active fresh air window and the method for achieving indoor ventilation have the advantages that ventilation pipeline laying is unneeded and is irrelevant to whether rooms are decorated or not; the indoor air pressure is positive pressure, and accordingly entering of the unclean air can be avoided; efficient air convection can be achieved; indoor noise is reduced and filter material replacement is facilitated; the active fresh air window is applicable to various constructions.

The invention discloses a box type transformer substation with a natural ventilation effect, and relates to the technical field of transformer substations. The box type transformer substation comprises a box, a base, a door and a plurality of vents. The box consists of wallboards on the four sides and a slopped cover plate at the top end; at least one columnar vent is arranged at the top end of the sloped cover plate and protrudes out of the sloped cover plate; a screen layer and rainproof plates are arranged on each vent, and stainless steel wire nets are mounted between the rainproof plates and fixed to two sides of the rainproof plates through screws. The box type transformer substation has efficient ventilation efficiency, is simple in structure, easy to maintain, and low in manufacturing cost; the vents thereof cannot be blocked after long-term use.

The invention particularly relates to a computer host chassis which comprises a main chassis housing and is characterized in that the front surface of the housing is a front door which can be opened;a supporting device is arranged at a position where the bottom surface of the housing is in contact with the horizontal plane; a through hole structure is arranged on the bottom surface of the housing; a fan is fixed above the through hole structure; wind generated by the fan is blown to the inside of the chassis; a filtering device is arranged above the fan; the filtering device is formed by twolayers of square filtering screens, and the periphery of the filtering device is fixed by a square frame; both ends of the square frame for the filtering device are clamped into chutes on both left and right inner surfaces of the housing; the wind generated by the fan is blown into the chassis through the filtering device; an air exhauster is arranged at the top of the housing and inside the chassis; through holes are formed at the top of the chassis and above the air exhauster; and the air exhauster exhausts air in the chassis out of the chassis. The method can effectively solve a problem ofinsufficient heat dissipation of the computer host chassis.