70results about How to "Improve air cooling efficiency" patented technology

A heating, ventilation, air conditioning, and refrigeration system is includes one or more variable frequency drives (VFD) controlled by one or more VFD controller, which are configured to provide three-phase power to one or more three-phase AC motors and single-phase power to one or more single-phase AC motors. The system also includes a power source controller configured to select from a plurality of power sources based on availability of one or more power sources and time so as to maximize the economic efficiency of operating the system.

The invention belongs to the technical field of nuclear power plant spent fuel pools and safe protection measure design thereof, and particularly relates to a containment built-in spent fuel pool, which comprises a spent fuel pool, a containment built-in water tank, a containment shell, a condensed water collector, valves, pipelines, a recirculation port and a containment cooling system, wherein the spent fuel pool and the containment built-in water tank are arranged inside the containment and are connected, the top of the containment built-in water tank is provided with the condensed water collector, the condensed water collector is connected with the inner wall of the containment shell, the lower end of the containment built-in water tank is connected with a reactor pressure vessel through the pipeline, the pipeline is provided with the valve, the recirculation port is connected on the outlet pipeline of the containment built-in water tank, and the containment cooling system is arranged on the outer portion of the containment shell. According to the present invention, the passive manner is adopted to cool the spent fuel without dependence on the external power supply so as to improve safety of the spent fuel pool under accidents and ensure radioactivity packaging and safe cooling of the spent fuel.

The invention discloses a solar photo-thermal vapor-liquid two-phase flow thermal expansion power generating system. The system consists of a solar thermal collector array, a booster pump, a vapor-liquid two-phase flow thermal expansion power machine, a generator and corresponding pipelines, and is characterized by being provided with a hot water-collecting well which is supplied with water by a water treatment device, wherein circulated hot water in the hot water-collecting well is pumped to a water supply main pipe through the booster pump; the water supply main pipe is used for distributing the circulated hot water to the solar thermal collector array; the circulated hot water is heated to a saturation temperature through all heat receivers of the solar thermal collector array and then is collected to a vapor-liquid two-phase flow saturation water main pipe; vapor-liquid two-phase flow saturation water in the vapor-liquid two-phase flow saturation water main pipe is matched with vapor-liquid two-phase working medium parameters through an expanded vapor-liquid matcher and then is conveyed to the vapor-liquid two-phase flow thermal expansion power machine to do work and drive the generator to operate; and vapor-liquid two-phase working media after work application flow back to the hot water-collecting well for recycling through a backflow pipeline.

The invention provides a cabinet system. The cabinet system comprises a back panel device, a functional plate and a fan, wherein the back panel device comprises (2N+1) sub back panels, each sub back panel comprises first interconnection back panels and a second interconnection back panel, the second interconnection back panel is arranged between each two first interconnection back panels at equal interval, the functional plate is horizontally arranged between the first interconnection back panels and the second interconnection back panel and is horizontally and orthogonally connected with the first interconnection back panels and the second interconnection back panels, the fan is arranged between the first interconnection back panels and the second interconnection back panel and on a plane perpendicular to a plane where the first interconnection back panels and the second interconnection back panel are located, and N is an integer more than or equal to 1. By the cabinet system, the problem of low heat dissipation efficiency caused by a heat dissipation opening hole, limited by electrical interconnection between functional modules, of a cabinet system in the relevant art is solved.

The invention discloses a heat dissipation device which comprises an independent air duct module and at least one heat pipe radiator, wherein the heat pipe radiator comprises a heat collecting fin, aheat pipe and a heat dissipation fin which are connected in turn; a cavity is formed in the independent air duct module; The invention also discloses a chassis with a heat dissipation device. The chassis can effectively dissipate heat from a heat source far from the chassis through a modular air duct design, simple structure and an integral scheme formed by combining a heat pipe radiator.

The invention provides a lithium ion battery rack with double pipelines. The device comprises a battery rack, a cooling pipe, an exhaust pipe and a battery box; the battery rack comprises four mounting columns; the same top plate is mounted at the top ends of the four mounting columns; the same bottom plate is mounted at the bottom ends of the four mounting columns; a plurality of partition platesare mounted among the four mounting columns; the cooling pipe comprises an air supply pipe and an air inflow pipe; the air supply pipe is communicated with the air inflow pipe; a plurality of air outlets are formed in the air supply pipe; a first fan is mounted at the junction of the air supply pipe and the air inflow pipe; wherein the exhaust pipe comprises a main pipe and a plurality of branchpipes; the bottom side of the exhaust pipe is an air inlet; the top side of the exhaust pipe is an air outlet; the battery box comprises a box body; an air outflow pipe is arranged on the box body; aone-way valve is arranged in the air outflow pipe; cooling fins are arranged on the bottom side of the box body; the air outlet is connected with the cooling fins; and the air outflow pipe is connected with the corresponding branch pipes. The lithium ion battery rack with the double pipelines has the advantages of good heat dissipation effect, high safety performance and simple structure.

The invention discloses a water-cooling and air-cooling combined computer mainframe box. The box comprises a box body, wherein an opening is formed in the side surface of the box body; a component mounting frame fixed on the inner side of the box body; wherein air cooling mechanisms are arranged on the two sides of the box body. The air cooling mechanism comprises a first fan, a second fan and a third fan; a water cooling mechanism is also arranged in the box body; the water-cooling mechanism comprises a water tank, a circulating pump, a three-way pipe, a control valve, a water inlet pipe, a water-cooling head and a water outlet pipe; the air cooling mechanism further comprises a temperature sensor and a control module. The signal input end of the control module is in signal connection with the temperature sensor; the signal output end of the control module is in signal connection with the fan switch, the pump switch and the control valve. By arranging the three fans, the fans work independently and cooperate with the water cooling mechanism through the control module, so that extra power loss is reduced during heat dissipation, and the heat dissipation device is economical and practical.

The invention discloses a high-voltage switch cabinet which comprises a switch cabinet body, a transformer winding is fixedly connected to the bottom of the inner wall of the switch cabinet body, boxbodies are fixedly connected to the front side and the rear side of the inner wall of the switch cabinet body, and openings in the box bodies face the transformer winding; a rotating shaft driven by apower mechanism to rotate is rotatably connected to the inner wall of the box body in a limited mode, a radial through hole is formed in the surface of the rotating shaft, a transmission rod is slidably connected to the surface of the rotating shaft in a limited mode through the through hole, a circular ring is fixedly connected to the end of the transmission rod, and a first stop block and a second stop block are fixedly connected to the surface of the transmission rod. According to the invention, through cooperative use of the mechanisms, the problems that in the actual use process, due tothe fact that a traditional high-frequency transformer switch cabinet is insufficient in heat dissipation effect, the service life is short are solved; the problems that a transformer is dampened occasionally in sunny days, the dampening condition is more easily intensified in a switch cabinet, and elements in the transformer are potentially damaged are solved.

The invention relates to a piezoelectric fan with laminating type blades. The piezoelectric fan comprises an elastic metal sheet and a piezoelectric ceramic sheet, wherein the piezoelectric ceramic sheet is bonded and fixed on the edge of one side of the elastic metal sheet, an upright support is arranged on the other side surface of the elastic metal sheet, and a thin film is arranged on one-quarter to one-half position of the upper portion of the support; the elastic metal sheet and the upright support form a L-shaped framework; and the material of the support is a PMMA organic material, andthe material of the thin film is polytetrafluoroethylene. The two sides of the piezoelectric ceramic sheet are connected to the positive electrode and the negative electrode of an alternating-currentdriving power supply, a power supply provides alternating voltage which is consistent with the system resonant frequency, and the piezoelectric ceramic sheet expands and contracts under the alternating voltage and then is subjected to displacement amplification through the L-shaped framework, so that wind sweeping and heat dissipation is realized on the thin film. According to the piezoelectric fan with the L-shaped framework laminating type blades, a grid-shaped support and the thin film are adopted to form a framework laminating type structure, so that good air impedance matching is realized, the end mass is not increased, air sweeping areas are increased, and the efficiency of air outlet and heat dissipation of the piezoelectric fan is improved.

The invention discloses a large-capacity SVG closed-type air-cooling system, which includes a SVG power cabinet group, a heat-exchanging air cabinet and a refrigeration unit. The heat-exchanging air cabinet is provided with an air supply duct and a return air duct with uniform wind resistance. The SVG power cabinet group is set between the air supply duct and the return air duct and communicates with each other. The refrigeration unit is connected to the heat exchange air cabinet. The SVG power cabinet group includes multiple power cabinets connected in parallel. Symmetrical air inlets and air outlets, each air inlet is connected with the air supply duct, and each air outlet is connected with the return air duct. The system has the advantages of high heat dissipation efficiency, strong adaptability and high reliability.

The invention provides a lamp box and a color selector. The lamp box comprises a box body, a plurality of lamps, a fan and an air duct; wherein the box body is provided with a closed accommodating space; the plurality of lamps are arranged in the accommodating space in parallel; the fan is arranged in the accommodating space and provided with an air suction opening and an air exhaust opening, andthe air suction opening is communicated with at least the part, occupied by the multiple lamps, of the accommodating space. The air duct is arranged in the accommodating space and is adjacent to the plurality of lamps; the air duct comprises an air inlet and a plurality of air outlets; the air inlet is formed in one end of the arrangement direction of the air duct; the air inlet is communicated with the air outlet, the air outlets are formed in the wall, adjacent to the lamps, of the air duct, the air outlets are adjacent and face the corresponding lamp, the cross section area of each air outlet is smaller than that of the air inlet, and the sum of the cross section areas of all the air outlets is smaller than that of the air inlet. Therefore, the heat dissipation efficiency of each lamp is improved, the temperature consistency, the working stability and consistency of all the lamps are improved, and the temperature uniformity of the box body is improved.

The invention discloses a powder synthesis solid processing technology for plastic products. The processing technology comprises the following steps of S1, mixing raw materials, specifically adding polycarbonate, polyethylene, polystyrene, wood powder, a coloring agent, an antistatic agent, an antioxidant and a flame retardant into a stirring device for stirring, wherein a second stirring mechanism in the stirring device is used for stirring the mixture; S2, crushing the mixture, wherein the mixture obtained in the step S1 is conveyed to a pulverizer through a conveying device, and the mixtureis crushed by the pulverizer, S3, heating and melting, specifically heating the mixed raw materials which are uniformly stirred in the step S2 through a high-temperature heating furnace, heating fora period of time, enabling the mixture to be in a molten state, then stopping heating; and S4, carrying out injection molding extrusion, specifically conveying the obtained molten state mixture into an injection molding machine. The powder synthesis solid processing technology for the plastic products has the beneficial effects that the raw materials of the plastic products can be sufficiently stirred, the guiding effect can be achieved during air cooling, and the air cooling efficiency is improved.

The invention discloses a motor controller air cooling heat dissipation installation structure, and belongs to the technical field of electric vehicles. Comprising a controller shell, and a row of parallel heat dissipation pipes are fixed to one side face of the controller shell; the radiating pipes are square pipes, convection gaps are reserved between the adjacent radiating pipes, and inclined convection holes which are evenly distributed are formed in the two side faces and the upper side face of each radiating pipe. The front end of the radiating pipe is connected with an air inlet pipe, and the end part of the air inlet pipe is provided with a semi-cylindrical lower spigot; the rear ends of the radiating pipes are provided with outward-extending horn mouths, and the opening edges of the horn mouths of the adjacent radiating pipes are connected. The overall structure is simple, installation is rapid, dismounting is easy, the rear end of the heat dissipation pipe is provided with the outward-extending horn mouth, the air outlet efficiency is improved, the convection effect is improved through the air outlet pressure difference, external free air enters the heat dissipation pipe through the inclined convection holes, the air volume entering the heat dissipation pipe is larger than the air volume of a draught fan, and therefore the air volume is increased, and the heat dissipation efficiency is improved. And the air-cooling heat dissipation efficiency is improved.