38results about How to "Improve convection cooling effect" patented technology

The invention provides a fixed-wing unmanned aerial vehicle air cooling type fuel cell double-stack integrated power system, and belongs to the field of fuel cells. The system comprises a fuselage, a power motor, a high-pressure hydrogen storage tank, wings, two air cooling type fuel cell stacks symmetrically arranged in the middle of the fuselage or on the wings, and two heat dissipation systems corresponding to the air cooling type fuel cell stacks; an air flow channel of the electric pile is a parallel wave-shaped flow channel; when the galvanic pile is arranged in the middle of the machine body, the cooling system further comprises a cooling fan; when the galvanic pile is arranged on the wings, the power system is suitable for the unmanned aerial vehicle with auxiliary propellers on the wings, and the heat dissipation system further comprises a wing front air guide cover; when the unmanned aerial vehicle is started or flies at a low speed, a medium speed and a high speed, the reaction temperature of the galvanic pile is controlled to be in an ideal temperature interval through different heat dissipation modes. The invention further provides a consistency guarantee control scheme during operation of the double-stack system, and the performance consistency of the stack is improved while the total electric power requirement is guaranteed.

The invention discloses a storage type heat dissipation assembly. The storage type heat dissipation assembly comprises a bearing base, an installing table and a heat dissipation unfolded assembly; the two ends of the installing table are provided with a small-diameter end and a large-diameter end respectively, and multiple storage grooves are formed in the edge of the large-diameter end; the heat dissipation unfolded assembly comprises multiple heat dissipation unfolded parts, and the heat dissipation unfolded parts are arranged in the storage grooves in a one-to-one correspondence mode; each heat dissipation unfolded part comprises a heat dissipation unfolded sheet and a rotating shaft, wherein the rotating shaft is fixed to the inner side wall of the corresponding storage groove, the heat dissipation unfolded sheet is provided with a rotating hole, and the rotating shaft is rotatably arranged in the rotating hole in a penetrating mode. In the packaging and transporting process, the heat dissipation unfolded sheets are contained in the storage grooves, therefore, the surface of the overall structure is smoother, fewer protrusive structure exists, and limitation for packaging operation is lower; when the storage type heat dissipation assembly needs to be used, the heat dissipation unfolded sheets are exposed out of the storage grooves, therefore, the heat dissipation area is increased, the heat radiation and heat convection heat dissipation effect can be improved, and the heat dissipation performance is better.

The invention discloses a light emitting diode (LED) handrail lighting system, which is used for ladder lighting at public places. The LED handrail lighting system comprises a hollow handrail casing pipe with lamp holes, and LED lighting components which are arranged in cavities at the lamp holes of the handrail casing pipe, wherein each LED lighting component comprises an optical lens which is wedged in a lamp hole; a substrate provided with an LED bead is fixedly connected below the optical lens; a radiating fin is closely connected below the substrate; and the lighting component is fixedly connected with the handrail casing pipe. The LED lighting component is detachably connected with a handrail, so the LED lighting component can be individually replaced without the replacement of the entire handrail to save replacement time and cost when failing to realize normal lighting due to malfunction. In addition, because the LED bead is covered by the optical lens, light uniformly irradiates on the ground through optical processing of the optical lens, the adverse condition of light divergence is eliminated, glare is effectively controlled, discomfort of pedestrians is greatly reduced, and the lighting effect that the light can be seen but the lamp cannot be seen is achieved.

The invention discloses a radiator and a manufacturing method thereof. The method reserves longitudinal grooves between transversely arranged radiating fins or transverse grooves between longitudinally arranged radiating fins to arrange the transversely arranged radiating fin groups or the longitudinally arranged radiating fin groups at intervals and to disconnect the radiating fin groups, thereby increasing convection radiation space between the radiating fin groups and improving convection radiation effect. By arranging convection grooves between two adjacent groups of radiating fins, the method increases convection radiation space between the radiating fins, prevents heat residue caused by small radiation space between the radiating fins, improves the convection radiation effect of the radiating fins, ensures the extremely ideal overall radiation effect of an radiator, saves materials of the radiating fins and reduces enterprise production cost.

The invention relates to a semi-open pre-assembled substation. The semi-open pre-assembled substation comprises a bottom support, a wall, a vertical post, a top cover, a high-voltage chamber, a low-voltage chamber and a transformer, wherein the transformer is arranged at a left side of an upper surface of the bottom support to form a semi-open installation structure, the wall is arranged at a right side of the upper surface of the bottom support, the interior of the wall is partitioned into a front part and a rear part, the front part is the high-voltage chamber, the rear part is the low-voltage chamber, and the transformer, the high-voltage chamber and the low-voltage chamber are placed in a T shape. The semi-open pre-assembled substation is ingenious in concept and novel and scientific and reasonable in structure and is easy to manufacture and to achieve, the transformer of the substation is placed in a semi-open manner, the high-voltage chamber and the low-voltage chamber employ novel ventilation cooling structure, so that air convection and ventilation cooling effect are improved, the temperature rising is reduced, and the service lifetime of electrical equipment is prolonged.

The invention discloses a prism beam concentration type LED lamp which comprises a first lamp shell, a first tetragonal prism and a plurality of second lamp shells, wherein the second lamp shells and the tetragonal prism are installed in the first lamp shell, the second lamp shells are distributed around the first tetragonal prism, first convex lenses and second convex lenses are arranged between the second lamp shells and the first tetragonal prism, a second tetragonal prism is installed in each second lamp shell, a plurality of lamp panels are installed around each second tetragonal prism, and third convex lenses and fourth convex lenses are arranged between the lamp panels and corresponding second tetragonal prisms. According to the prism beam concentration type LED lamp, the brightness of the LED lamp is improved greatly and can be as high as 50000-100000lm; a light source is environmentally friendly; cooling copper sheets are installed on the periphery of an LED lamp bead, round holes and fin structures are arranged on the cooling copper sheets to improve convection heat dissipation and radiation heat dissipation effects of the cooling copper sheets, and therefore the service life of a lamb base can be as long as 50000-100000h.

A concentrating solar power generation device based on dual-circuit cooling, which mainly includes a concentrating mechanism, a power generating mechanism, a heat dissipation mechanism and a control mechanism, wherein the heat dissipation mechanism includes a cooling channel, a first water tank and a second water tank, and the cooling channel is used to utilize flow The internal cooling water absorbs the heat energy from the solar cell heat conduction to the inside of the cooling channel. The first water tank is located higher than the cooling channel and is connected in series with the cooling channel to form a first cooling circuit. The second water tank is connected in series with the cooling channel to form a The second cooling circuit; wherein the control mechanism includes a controller and a plurality of electric valves arranged on the first cooling circuit and the second cooling circuit, and is used to control the plurality of electric valves to switch the first cooling circuit and the second cooling circuit. The heat dissipation mechanism is used to evacuate the heat energy generated by the power generation mechanism, so that the cooling water can quickly absorb the heat energy transferred from the solar cell to the inside of the cooling channel, so as to achieve the purpose of water cooling and heat dissipation.

The invention discloses a variable frequency motor and frequency converter combined device, and belongs to the technical field of variable frequency motors. The invention mainly comprises a motor, a shell, an air guide cover, a refrigeration assembly, an air supply assembly and a frequency converter; the shell comprises a barrel and a frame, the air guide cover is similar to an air multiplier in structure and comprises an inner ring body, an outer ring body, an air cavity and a crack, and the refrigeration assembly comprises a placement frame, a semiconductor chilling plate and a heat dissipation piece abutting against the hot end of the semiconductor chilling plate and placed in the frame body. The frequency converter comprises a bottom plate, a box body, a top cover, a driving plate anda capacitor plate, the driving plate and the capacitor plate are installed below the box body and abut against the bottom plate, the bottom plate is provided with fins and a contact plate, and the contact plate abuts against the cold end face of the semiconductor chilling plate. The air supply assembly comprises a side plate arranged on the outer side of the fin, a necking fan cover and an air compressor, and the air compressor is communicated with the necking fan cover and the air cavity. According to the variable frequency motor and frequency converter combined device, the heat dissipation effect is effectively improved.

Heat radiation problem of a light emitting diode (LED) chip is a key point of the technology, and bad heat radiation can directly influence the service life and light efficiency of an LED, so that a large aluminum alloy die-casting heat radiating sheet is generally arranged on the upper part of an LED lamp, the LED is cooled down by utilizing the air convection, the size of the heat radiating sheet is larger when the power of the LED is greater, the cost by adopting a heat radiating pipe is high, for example, a streetlamp adopting the heat radiation way, dust and bird shit are accumulated in the heat radiating sheet as time goes by, the heat radiating effect is greatly reduced, and on the other hand a heat radiating substrate and a bonding material are critical for the heat radiation of the LED. The invention provides a light emitting diode (LED) heat radiating device and a streetlamp. The streetlamp consists of a lamp holder frame, an upper housing, a supporting plate and an LED bulb. By adequately utilizing different physical phenomena, combining the principles of calorifics and hydromechanics, the heat produced by the chip is brought away in time, a transient temperature field on the upper part of a heat guide plate is improved by utilizing the reverse thinking of the heat radiation, so that the airflow is accelerated, a rapid heat radiation effect can be realized, an energy-saving effect can be realized by utilizing a simple scientific principle, and the product can really realize a low-carbon, energy-saving, environment-friendly, high-quality and inexpensive effect.

A convection heat dissipating lamp comprises a heat dissipating installing frame, a supporting heat dissipating lamp panel, a convection heat dissipating assembly, a heat dissipating installing lamp base, an LED light emitting body and an enhanced heat dissipating assembly; the supporting heat dissipating lamp panel is arranged on the heat dissipating installing frame, the convection heat dissipating assembly comprises a first heat dissipating arc plate and a second heat dissipating arc plate; and the first heat dissipating arc plate and the second heat dissipating arc plate are correspondingly arranged on the supporting heat dissipating lamp panel. The heat dissipating installing lamp base is arranged on the supporting heat dissipating lamp panel. The LED light emitting body is arranged on the heat dissipating installing lamp base. The enhanced heat dissipating assembly comprises a plurality of first enhanced heat dissipating pipe bodies and a plurality of second enhanced heat dissipating pipe bodies; the two ends of each first enhanced heat dissipating pipe body are correspondingly connected with the first heat dissipating arc plate and the heat dissipating installing lamp base;the first enhanced heat dissipating pipe bodies are each provided with a first convection hole; and the two ends of each second enhanced heat dissipating pipe body are connected with the second heat dissipating arc plate and the heat dissipating installing lamp base. Thus, the heat dissipating performance of the overall structure can be improved.

A drawing and pulling type cooling complete part comprises a heat amount treatment base, a mounting base table and a drawing and pulling assembly; the mounting base table is arranged on the heat amount treatment base, and is of a cylindrical structure, multiple mounting grooves are formed in the mounting base table in the radial direction, and multiple drawing and pulling holes are formed in the bottom of each mounting groove; the drawing and pulling assembly comprises multiple drawing and pulling parts, each drawing and pulling part is correspondingly mounted on a mounting groove, and each drawing and pulling part comprises a cooling arc piece and multiple cooling drawing and pulling rods; the first ends of the drawing and pulling rods penetrate in the drawing and pulling holes in a one-to-one correspondence sliding manner, and the second ends of the drawing and pulling rods are connected with the cooling arc pieces; in the transport process, the cooling arc pieces and the drawing and pulling rods are contained in the mounting grooves and the drawing and pulling holes correspondingly, in the unit package space, more drawing and pulling type cooling complete parts can be contained, when the complete part needs to be used, the cooling arc pieces and the drawing and pulling rods are pulled out, the cooling area of the whole structure can be improved, and the cooling property is better.

A convection heat dissipating lamp comprises a heat dissipating installing frame, a supporting heat dissipating lamp panel, a convection heat dissipating assembly, a heat dissipating installing lamp base, an LED light emitting body and an enhanced heat dissipating assembly; the supporting heat dissipating lamp panel is arranged on the heat dissipating installing frame, the convection heat dissipating assembly comprises a first heat dissipating arc plate and a second heat dissipating arc plate; and the first heat dissipating arc plate and the second heat dissipating arc plate are correspondingly arranged on the supporting heat dissipating lamp panel. The heat dissipating installing lamp base is arranged on the supporting heat dissipating lamp panel. The LED light emitting body is arranged on the heat dissipating installing lamp base. The enhanced heat dissipating assembly comprises a plurality of first enhanced heat dissipating pipe bodies and a plurality of second enhanced heat dissipating pipe bodies; the two ends of each first enhanced heat dissipating pipe body are correspondingly connected with the first heat dissipating arc plate and the heat dissipating installing lamp base;the first enhanced heat dissipating pipe bodies are each provided with a first convection hole; and the two ends of each second enhanced heat dissipating pipe body are connected with the second heat dissipating arc plate and the heat dissipating installing lamp base. Thus, the heat dissipating performance of the overall structure can be improved.

The invention discloses a storage type heat dissipation assembly. The storage type heat dissipation assembly comprises a bearing base, an installing table and a heat dissipation unfolded assembly; the two ends of the installing table are provided with a small-diameter end and a large-diameter end respectively, and multiple storage grooves are formed in the edge of the large-diameter end; the heat dissipation unfolded assembly comprises multiple heat dissipation unfolded parts, and the heat dissipation unfolded parts are arranged in the storage grooves in a one-to-one correspondence mode; each heat dissipation unfolded part comprises a heat dissipation unfolded sheet and a rotating shaft, wherein the rotating shaft is fixed to the inner side wall of the corresponding storage groove, the heat dissipation unfolded sheet is provided with a rotating hole, and the rotating shaft is rotatably arranged in the rotating hole in a penetrating mode. In the packaging and transporting process, the heat dissipation unfolded sheets are contained in the storage grooves, therefore, the surface of the overall structure is smoother, fewer protrusive structure exists, and limitation for packaging operation is lower; when the storage type heat dissipation assembly needs to be used, the heat dissipation unfolded sheets are exposed out of the storage grooves, therefore, the heat dissipation area is increased, the heat radiation and heat convection heat dissipation effect can be improved, and the heat dissipation performance is better.

The invention provides a fixed-wing unmanned aerial vehicle air-cooled fuel cell dual-stack integrated power system, belonging to the field of fuel cells, comprising a fuselage, a power motor, a high-pressure hydrogen storage tank, a wing, two symmetrically arranged in the middle of the fuselage or The air-cooled fuel cell stack on the wing, and two heat dissipation systems corresponding to the air-cooled fuel cell stack; the air flow channel of the stack is a parallel wave-shaped flow channel; when the stack is arranged in the middle of the fuselage, the heat dissipation system It also includes a cooling fan; when the stack is set on the wing, the power system is suitable for the drone with auxiliary propellers on the wing, and the cooling system also includes the front wing shroud; when the drone starts or flies at a low speed, During medium-speed flight and high-speed flight, the reactor temperature is controlled to be within the ideal temperature range through different heat dissipation methods. The invention also proposes a consistency guarantee control scheme during the operation of the dual-stack system, which improves the stack performance consistency while ensuring the overall electric power demand.

The invention relates to the technical field of electric tools and discloses an electric circular saw. The electric circular saw includes a saw blade, a fixed guard, a motor, a radiator and a power board. The fixed guard encloses the upper part of the saw blade. The output end of the motor is connected with the saw blade to drive the saw blade to rotate. The heat sink is arranged on the fixed shield, and the casing includes a first housing part and a second housing part arranged at both ends of the cabinet, the motor is arranged in the first housing part, and the heat sink is arranged in the second housing part; On the component, it is used to control the output power of the motor. The electric circular saw provided by the present invention uses the fixed shield to indirectly increase the heat dissipation area of ​​the heat sink, and because the fixed shield is directly in contact with the outside air, the heat dissipation efficiency of the power board can be further improved, and there is no need to install a special cooling air The power board is dissipated through the circuit, so that the cooling air circuit can be simplified.

The invention discloses an air-cooling soft waistcoat for mining. The air-cooling soft waistcoat comprises a soft waistcoat body, the inner side of the soft waistcoat body is provided with an air supply main pipe and a plurality of air supply branch pipes, the air supply main pipe is arranged on the lower edge of the inner side of the soft waistcoat body in an annular mode, the air supply branch pipes are vertically arranged on the inner side of the soft waistcoat body in parallel and communicated with the air supply main pipe, each air supply branch pipe is provided with a plurality of air supply holes, compressed air flowing and heat dissipating channels are formed between the human body surface and the soft waistcoat body, and the air supply main pipe is connected with a compressed air supply system through a compressed air supply connecting pipe. According to the air-cooling soft waistcoat for mining, a support type structure is adopted, the mode that the air supply branch pipes are arranged all over the inner surface of the air-cooling soft waistcoat at a certain interval and provided with the air supply holes at certain density is adopted, compressed air is blown to a human body and flows in the compressed air flowing and heat dissipating channels formed in the body surface to cool the human body, therefore, evaporation heat absorption and convection heat dissipation of sweat on the human body skin surface are enhanced, the compressed air utilization efficiency and the body surface heat dissipation efficiency are improved, and the heat dissipation effect of the air-cooling soft waistcoat is improved.

An efficient heat dissipating lamp comprises a heat dissipating base, a supporting table body, a heat dissipating rotary wing plate assembly and LED illuminating bodies. The supporting table body is arranged on the heat dissipating base. A heat dissipating containing groove is formed in the side edge of the supporting table body. The heat dissipating rotary wing plate assembly comprises a rotary shaft and a plurality of rotary wing plates. The rotary shaft and all the rotary wing plates are all contained in the heat dissipating containing groove. The two ends of the rotary shaft are fixed to the two opposite inner side walls of the heat dissipating containing groove correspondingly. The rotary shaft rotates in sequence and penetrates through one ends of the rotary wing plates, and the rotary wing plates are arranged at intervals. When the efficient heat dissipating lamp is in the transportation process, all the rotary wing plates are contained in the heat dissipating containing groove, thus, the surface of the overall structure is more flat, the number of protruding structures is smaller, the efficient heat dissipating lamp is easy to store and package in a concentrated mode, limitation to packaging operation is smaller, when the efficient heat dissipating lamp needs to be used, the ends, away from the rotary shaft, of the rotary wing plates are made to stretch out of the heat dissipating containing groove, the thermal radiation effect and the thermal convection heat dissipation effect can be improved, and the heat dissipating performance is better.