432results about How to "Guaranteed cooling efficiency" patented technology

The invention relates to a heat dissipation control method, device and equipment of a storage server and a storage medium, and aims to optimize the heat dissipation performance of the server by monitoring working characteristic parameters and power consumption data of a chip in real time. The method comprises the following steps: firstly, acquiring working load and power consumption information of each chip in a server, calculating temperature distribution of each chip, and generating an initial temperature data set; then, heat generation characteristic analysis is carried out on the set, and a heat generation model under the current load is obtained; then, a heat transfer path model is established based on the model and a server structure, and heat transfer among the chips is analyzed. And according to the heat transfer path, optimizing configuration parameters of an air cooling system and a liquid cooling system in the server, and generating optimized cooling parameter settings. And finally, the optimized parameters are applied to a heat dissipation control system of the server, dynamic adjustment is performed according to real-time load and temperature feedback, and a self-adaptive heat dissipation strategy is formed, so that the heat dissipation efficiency is improved, and stable operation of the server is ensured.

The invention relates to the technical field of heat dissipation control, and discloses a heat dissipation fan multi-order filtering control method and device, and the method comprises the steps: collecting the operation parameters of a multi-fan heat dissipation system, and carrying out the construction of a dynamic state space model, and obtaining a system operation state equation and a temperature observation equation; inputting the system operation state equation and the temperature observation equation into an expectation maximization sliding window iteration extended Kalman filter to obtain a system state estimation value and a prediction error covariance matrix; performing three-stage series design on the cut-off frequency of the low-pass filter, the passband range of the band-pass filter and the coefficient of the adaptive filter to obtain a system multi-order filtering control model; based on a system multi-order filtering control model, an airflow coupling influence coefficient matrix among multiple fans is calculated, the total energy consumption, the noise level and the heat dissipation efficiency are subjected to optimization solution, a fan control optimization parameter set is obtained, the heat dissipation efficiency is guaranteed while the energy consumption is reduced, and dynamic balance among all control units is achieved.

The invention discloses a high-power kitchen appliance motor in the technical field of motors, which comprises a base and a motor shell arranged on the base, a rotating shaft rotatably penetrates through the motor shell, a stator is arranged on the inner wall of the motor shell, a rotor is arranged on the rotating shaft, and a heat dissipation mechanism for dissipating heat of the motor shell is arranged on the base; an air inlet channel is formed in the end, located on a rear end cover of the motor shell, of the rotating shaft, a sleeve shell rotationally arranged on the rotating shaft in a sleeving mode is arranged on a front end cover of the motor shell, a first through hole communicating with the sleeve shell is formed in the outer surface of the rotating shaft in a penetrating mode, and a second through hole communicating with the sleeve shell is formed in the front end cover of the motor shell in a penetrating mode; a rear end cover of the motor shell is communicated with an exhaust pipe; the heat dissipation mechanism comprises a water tank arranged on the base, a partition plate is arranged on the water tank and used for dividing the water tank into a filter cavity and a refrigeration cavity which are not communicated with each other, a semiconductor chilling plate is arranged in the refrigeration cavity, and the opening end of the rotating shaft rotationally extends into the refrigeration cavity.

The invention discloses a wear-resistant flame-retardant fireproof cable and a preparation method thereof, and relates to the technical field of fireproof cables, the wear-resistant flame-retardant fireproof cable comprises six wire cores, each wire core is composed of a copper stranded wire and a cross-linked polyethylene pipe, the outer surface of each wire core is fixedly connected with a special-shaped plastic pipe, and the outer surface of each special-shaped plastic pipe is fixedly connected with a cable core. The outer surface of the special-shaped plastic tube is fixedly connected with an inner sliding strip, and the outer surface of the inner sliding strip is fixedly connected with a heat shrink tube. According to the wear-resistant flame-retardant fireproof cable and the preparation method thereof, the supporting mechanism is used for guiding gas in the ventilation pipes into the gas flow channel, the number of the ventilation pipes is two, so that guiding-in and guiding-out of cooling gas in the heat shrink tube are controlled, the telescopic pipe is arranged on the outer surface of the sealing mechanism in a sleeving mode, and when the cable is dragged and laid on the ground, the cable is not prone to falling off. The telescopic pipe effectively protects the ventilation pipe and the sealing mechanism, and the problem of how to avoid cable combustion in a cooling mode so as to reduce loss is solved.

The invention belongs to the technical field of transformers, and particularly relates to a voltage transformer which comprises a protection mechanism, a main body assembly, a circulation mechanism, a heat exchange mechanism, a ventilation mechanism and a dust falling mechanism. The protection mechanism comprises a protection cabin and a protection ceiling arranged above the protection cabin; the main body assembly comprises a containing shell and a coil shell, the coil shell is fixedly installed on the inner wall of the containing shell, and the containing shell is arranged in the protection cabin; the circulating mechanism is used for controlling the insulating oil in the accommodating shell to flow circularly; the heat exchange mechanism comprises an installation shell, a heat exchange box, a control piece and a heat exchange plate, the installation shell is fixedly installed on the outer wall of the containing shell, the heat exchange box is fixedly installed in the installation shell, and the circulation mechanism controls the insulating oil to pass through an inner cavity of the heat exchange box when flowing; through cooperation of the structure, on one hand, water drops are attached to the outer wall of the heat exchange plate, the heat dissipation efficiency is improved, and meanwhile, dust attachment can be effectively prevented through flowing of the water drops, and the heat dissipation efficiency is kept.

The utility model relates to the technical field of numerical control lathes, in particular to a vertical tool turret device of a double-tool numerical control lathe. Comprising a tool turret mounting seat and a tool turret body, a servo motor, a driving main shaft, a sun gear, a planetary gear and a transmission inner gear ring are mounted in the tool turret mounting seat, a guide ring sliding groove is formed in the outer side of the tool turret mounting seat, the tool turret body is mounted at the front end of the tool turret mounting seat, and a telescopic motor is mounted on the outer side of the tool turret mounting seat; the output end of the telescopic motor is connected with a telescopic corrugated pipeline, and a cooling liquid nozzle is installed at the end, away from the telescopic motor, of the telescopic corrugated pipeline. In the machining process of a workpiece, the telescopic motor pushes the telescopic corrugated pipeline to stretch, the cooling liquid nozzle moves to the outer side of the tool, at the moment, cooling liquid cools the tool through the telescopic corrugated pipeline and the cooling liquid nozzle, and by adopting the mode, the position of the cooling liquid nozzle can be accurately adjusted according to different tools; and the cutter cooling efficiency and effect can be effectively guaranteed.

The utility model discloses an inverter, which is characterized by comprising a case, a fan and a main radiator, the fan is arranged in the case; an air outlet is formed in the first side of the fan; the main radiator is arranged in the case, the main radiator is located on the first side of the fan, the main radiator and the fan are arranged at intervals, the main radiator comprises a first part and a second part which are arranged side by side, each of the first part and the second part comprises a plurality of first fins which are arranged in sequence, and a first radiating air channel is formed between every two adjacent first fins; the air outlet faces the first part and the second part, airflow exhausted by the air outlet can flow along the first heat dissipation air channels in the first part and the second part, and the distance between the air outlet and the first part is smaller than that between the air outlet and the second part. The diffusion space for diffusing the air flow is arranged between the fan and the first part and between the fan and the second part, and the air flow blown out of the air outlet can be diffused in the diffusion space, so that the main radiator also has better radiating efficiency.

The invention discloses an automobile charging pile, and belongs to the technical field of charging piles. An automobile charging pile comprises a bottom plate and further comprises a containing groove and a mounting groove which are both formed in the upper end face of the bottom plate, a charging pile body is longitudinally and slidably mounted in the containing groove, and a flat plate is longitudinally and slidably mounted in the mounting groove; the jacking part is arranged in the containing groove, and after the flat plate is pressed downwards, the jacking part enables the charging pile body to be lifted upwards; the influence of wind and sun on the charging pile body can be reduced, the service life of the charging pile body can be indirectly prolonged, the surrounding environment can be wider after the charging pile is stored, and shielding of the view field is reduced.

The present disclosure provides an optical module, comprising: an upper housing comprising an upper cover plate; the chip generates heat, and the heat is transmitted to the upper cover plate; the heat dissipation part is arranged on the upper shell, is in contact connection with the upper cover plate and is used for diffusing heat on the upper shell; wherein the heat dissipation component comprises heat dissipation fins; a plurality of windward side surfaces are arranged on the heat dissipation fins, the windward side surfaces are used for making forward contact with air flows from multiple directions, and the size of the windward side surfaces is smaller than that of the leeward side surfaces of the heat dissipation fins; or, the heat dissipation fins are provided with arc-shaped windward side faces, and the arc-shaped windward side faces are used for making forward contact with air flow from multiple directions. According to the optical module provided by the invention, the heat generated by the chip in the optical module is quickly transmitted out through the heat dissipation component arranged on the upper shell, so that the optical module is ensured to have good heat dissipation efficiency.

The low-noise environment-friendly speed reducer comprises a speed reduction supporting shell, a driving part is fixedly installed on the outer wall of the speed reduction supporting shell, a speed reduction device is installed at the output end of the driving part, and the output end of the speed reduction device is connected with a load; a stabilizing device and a damping device are installed on the outer wall of the speed reducing mechanism, the stabilizing device comprises a stabilizing base and a first air bag, the first air bag is communicated with the air source assembly, the damping device comprises a damping base and a second air bag, the second air bag is communicated with the air source assembly, a universal joint mechanism is installed on the second air bag, and a first pressure sensor is arranged on the damping base. A deceleration intelligent controller is installed on the deceleration supporting shell, and a main control module, an instruction module, a monitoring module and a decibel meter are arranged in the deceleration intelligent controller. According to the low-noise environment-friendly speed reducer, noise generated by vibration of the speed reducing device is reduced, the heat dissipation efficiency of the speed reducing mechanism is improved, and self-adaptive adjustment of heat dissipation and noise reduction of the speed reducer is achieved.

The invention relates to the technical field of additive manufacturing, in particular to an electron beam additive manufacturing cooling method and electron beam additive manufacturing equipment. The electron beam additive manufacturing cooling method comprises the following steps that a vacuum forming chamber is filled with mixed cooling gas, the mixed cooling gas comprises helium and balance gas, and the balance gas comprises argon and / or neon; after the mixed cooling gas fully exchanges heat in the vacuum forming chamber, the temperature in the vacuum forming chamber is detected and obtained; when the obtained temperature in the vacuum forming chamber is higher than a preset temperature; and if yes, the mixed cooling gas filled in the vacuum forming chamber is pumped out, and the mixed cooling gas is filled in the vacuum forming chamber again. According to the electron beam additive manufacturing cooling method provided by the invention, the mixed cooling gas is circularly filled into the vacuum forming chamber, so that the cooling efficiency of the vacuum forming chamber is effectively improved. In addition, mixed cooling gas is filled into the vacuum forming chamber, so that the cooling cost is reduced, and the cooling efficiency is also ensured.

The present invention belongs to the technical field of explosion-proof motors, and specifically relates to a heat-dissipating explosion-proof motor, which includes a housing, a stator, a rotor, a sealed front cover, a sealed rear cover, a fan, an adjustment component, an adjustment frame, a vent pipe, a lightweight plate, a sealing rubber, and a dust screen. When the speed of the motor of the present invention increases, the speed of the fan increases accordingly, and at the same time, the working heat of the motor increases. During this process, the electromagnetic ring attracts the suction plate, causing the suction plate to slide along the rotating sleeve. When the gear on the suction plate is engaged with the rack plate, the fan drives the lightweight plate to move relatively away through the gear. As the lightweight plate moves, the lightweight plate stretches the dust screen, increasing the vertical area of ​​the dust screen, and the air intake of the dust screen increases accordingly. While the fan speed increases, the ventilation volume of the dust screen increases accordingly. Therefore, the heat dissipation efficiency of the fan is improved accordingly, so that the fan can effectively dissipate the increased working heat of the motor and avoid the accumulation of heat inside the motor affecting its circuit.

The invention discloses a sole single-mold forming mold and a forming method thereof, and relates to the related field of sole mold forming, the sole single-mold forming mold comprises a fixed block, the bottom position of the fixed block is fixed to the horizontal plane through a bolt, and a sole mold body capable of forming two at one time is installed in the fixed block and a movable block; the rapid cooling mechanism achieves rapid cooling work in the fixed block and the fixed mold block, and the rapid cooling mechanism can act on the oscillation mechanism to achieve sufficient filling of the blank in the shoe sole mold body in the groove of the shoe sole mold body. According to the sole single-mold forming mold capable of achieving one-to-two forming and the forming method of the sole single-mold forming mold, the rapid cooling mechanism is arranged, so that cooling of the conveying pipe can be accelerated, in addition, through cooperative arrangement of the oscillation mechanism, blanks filled in the fixed block and the fixed mold block can be fully mixed, and the forming efficiency is improved. Therefore, the phenomenon of gaps in sole forming is avoided.

The utility model discloses a 3D printing efficient heat dissipation mechanism and a 3D printer, the 3D printing efficient heat dissipation mechanism comprises an effector shell, the effector shell comprises an upper shell and a lower shell, the upper shell is provided with an air guide pipe, and the lower shell is provided with an air distribution device; an air inlet is formed in the upper end of the air guide pipe and connected with an external air supply device through an air supply pipeline. An air outlet is formed in the lower end of the air guide pipe; the air distribution device comprises an air duct, the air duct is connected with an air outlet of the air guide pipe, and the air duct is provided with a first exhaust structure for dissipating heat of the nozzles. According to the utility model, air is supplied to the air guide pipe through the external air supply device, and the air is conveyed to the air duct of the air distribution device by the air guide pipe and is exhausted from the air exhaust structure, so that the air quantity and the air speed of an actual acting part can be increased, the heat dissipation efficiency of the 3D printer during printing is ensured, the overall weight of the effector is reduced, and the occupied space is small.

The invention discloses a protection device for a mechatronics motor, the protection device comprises a protection shell, a driving assembly, a ventilation assembly and an auxiliary ventilation assembly, a motor is arranged at the bottom in the protection shell, a ventilation slot I is formed in the top of the protection shell, the driving assembly comprises a storage slot, and the storage slot is formed in the back surface of the protection shell. When the working plate inclines, an extrusion frame on the working plate is separated from an air bag, at the moment, the elasticity of the air bag is recovered, negative pressure generated in the air bag is guided into the auxiliary ventilation box through a connecting pipe, the elasticity of a second spring in the auxiliary ventilation box is recovered, and at the moment, a movable baffle moves and is stored in the auxiliary ventilation box; a second ventilation groove in the outer side of the protective shell is exposed, so that the number of ventilation positions on the outer side of the protective shell is increased to three, the total amount of air entering the protective shell can be increased, and meanwhile, the temperature in the protective shell can be rapidly reduced by cooperating with work of a ball fan.

The utility model relates to the technical field of circuit breakers, and discloses an anti-condensation high-voltage vacuum circuit breaker which comprises a case, a plurality of vacuum arc extinguish chambers are installed on the upper surface of the case, and a dustproof box is fixedly installed on the outer surface of the case. According to the anti-condensation high-voltage vacuum circuit breaker, by arranging the temperature sensor and the humidity sensor, the purpose of monitoring the internal humidity and temperature of the dustproof box can be achieved, when the internal temperature is too high, by arranging the axial flow fan, internal air circulation can be accelerated, the heat dissipation efficiency can be improved, and when the humidity is high, the heat dissipation efficiency can be improved. According to the invention, through cooperation of a heating wire and an axial flow fan, the purpose of heating air can be achieved, the air humidity in the dustproof box is effectively reduced, through cooperation of a moisture absorption block, the moisture resistance is further improved, through arrangement of a dustproof net, dust can be intercepted, the heat dissipation efficiency of the case and the vacuum arc-extinguishing chamber is ensured, and through a cross-shaped cleaning plate, the heat dissipation efficiency of the case and the vacuum arc-extinguishing chamber is improved. And a dustproof net can be cleaned, blockage can be avoided, and the ventilation efficiency is guaranteed.

The utility model provides a cooling device for continuous quenching of aluminum foil, which comprises a cooling pond, a water inlet pipe and a water outlet pipe are respectively arranged on two sides of the cooling pond, and a filtering and cleaning device is arranged in the cooling pond through a fixing device. An electric telescopic rod is fixed to one side of the placement plate, a fixing block is fixedly connected to the output end of the electric telescopic rod, a cleaning brush is fixed to the bottom of the fixing block, a filter screen is fixedly arranged at the position, close to the water outlet pipe, of the inner wall of the cooling pond, and the cleaning brush is matched with the filter screen and the water outlet pipe in size; the filtering and cleaning device is arranged in the cooling pond, cooling water discharged from the water outlet pipe can be filtered and cleaned, residues generated in the aluminum foil quenching process are prevented from entering the water outlet pipe, the risk of blockage of the water outlet pipe is reduced, the cooling water circulation effect in the cooling pond is guaranteed, and the cooling efficiency of the cooling device is guaranteed.

The invention relates to a rotor filling and sealing tool in the field of engine rotor manufacturing, and the rotor filling and sealing tool comprises a lower pressing ring and an upper pressing ring, a rotor structure is packaged between the lower pressing ring and the upper pressing ring, and a protection shell matched with the rotor structure is clamped between the lower pressing ring and the upper pressing ring; the protective shell comprises a main shell body, a plurality of air pipes distributed circumferentially are connected to the outer wall of the main shell body, a plurality of nozzles distributed at equal intervals are connected between the air pipes and the main shell body, a flow equalizing air plate is arranged between every two adjacent nozzles, a four-way electromagnetic valve is connected between the nozzles and the air pipes, and the output ends of the flow equalizing air plates are located on the inner side of the main shell body. The rotor structure comprises a balance end plate, the upper side of the balance end plate is provided with a plurality of uniformly distributed rotor main bodies, and the bottom ends of the rotor main bodies are clamped with auxiliary supporting plates; a plurality of groups of key holes are formed in the rotor main body, and magnetic steel is embedded in the key holes; the heat dissipation efficiency of the rotor and the magnetic steel can be easily ensured, and the rotor body or the magnetic steel can be accurately cooled.

The invention belongs to the technical field of motors, and particularly relates to a high-efficiency permanent magnet synchronous motor with an internal oil-water mixed cooling structure, which comprises a motor shell, a stator mounting shell is arranged in the motor shell, a heat exchange channel is formed between the motor shell and the stator mounting shell, and an auxiliary cooling fin mounting groove is formed in the outer side of the stator mounting shell. An auxiliary cooling fin device is installed on the outer side of the stator installation shell through an auxiliary cooling fin installation groove, the auxiliary cooling fin device comprises a base, the base is inserted into the auxiliary cooling fin installation groove, an integrally-formed cooling fin is arranged on the outer side of the base, and a top oil-water mixing heat conduction device and a bottom oil-water mixing heat conduction device are arranged on the outer side of the stator installation shell. A cooling device mounting seat is mounted at the top of the motor shell, an oil-water integrated cooling mechanism is mounted at the top of the cooling device mounting seat, the cooling efficiency can be improved, meanwhile, through the integrated design of the conduction oil cooling mechanism and the cooling water cooling mechanism, the cooling efficiency is guaranteed, and the machining difficulty, cost and occupied space are reduced.

The present invention relates to the technical field related to permanent magnet motors, and discloses a large-torque explosion-proof permanent magnet motor with a cooling and regulating function, comprising a self-regulating heat dissipation component, an active heat dissipation component, a drive component, an integrated exhaust and collection device, and a dynamic thermal management wind control unit arranged in sequence from the tail to the end, the dynamic thermal management wind control unit comprising a second wind control unit component and a first wind control unit component, the first wind control unit component is arranged above the second wind control unit component, and the first wind control unit component and the second wind control unit component are arranged alternately; the present invention uses the second wind control unit component and the first wind control unit component, the second wind control unit component and the first wind control unit component are symmetrically arranged and staggered, and work together to achieve alternating suction and discharge of airflow, and when the drive device in the first wind control unit component is started, the drive device will push the arc push plate to move outward.

The utility model discloses a cooling device for modified plastic processing, which belongs to the technical field of modified plastic processing and comprises a water tank, a convenient material taking assembly is arranged on one side of the water tank, a cooling air bellow is arranged on one side of the convenient material taking assembly, a net cage pushing assembly is arranged at the upper end of the water tank, and a porous net cage is arranged on one side of the net cage pushing assembly. A feeding hole is formed in the upper end surface of the porous net cage; according to the multi-hole net cage air-drying device, by arranging the convenient material taking assembly, the multi-hole net cage can be limited, lifted and then air-dried, the convenience of continuous work of the device is facilitated, the air-drying efficiency is improved, the using effect of the device is guaranteed, workers can conveniently take down the multi-hole net cage, manpower resources are saved, and the labor cost is reduced; the net cage containing high-temperature modified plastic can be conveniently pushed, the use safety of workers is guaranteed, meanwhile, the water flow rate can be increased, the plastic cooling efficiency is guaranteed, and the production quality is improved.

The utility model discloses a splicing type diode assembly convenient for rapid plugging and replacement, which relates to the technical field of diodes, and comprises a diode body, one side of the diode body is provided with a plugging and splicing replacement mechanism, the plugging and splicing replacement mechanism comprises a plugging block, and one side of the diode body is fixedly connected with the plugging block. According to the utility model, through the arrangement of the plugging, splicing and replacing mechanism, the effect of splicing and replacing the diode can be achieved by rapidly plugging the diode, and during the use process, the situation that the diode is damaged and needs to be welded or disassembled by using a tool when the diode cannot be rapidly plugged, spliced and replaced can be avoided; the utility model aims to solve the problems that the existing diode assembly is easy to replace, the maintenance time and difficulty are increased, the maintenance efficiency is reduced, other elements are damaged due to improper operation for some complex circuits, the debugging is inconvenient, the debugging process becomes tedious, the debugging period is prolonged, and the research and development of products are influenced, and the practicability and replacement efficiency of the diode assembly are ensured.

The utility model discloses a frequency converter cooling system for a wind turbine generator, and belongs to the technical field of wind turbine generator cooling. Comprising a frequency conversion cabinet, a mounting plate is fixedly arranged in the frequency conversion cabinet, and cooling fins are fixedly arranged at the top of the mounting plate; the cabinet door is arranged on one side of the frequency conversion cabinet, and a flow guide assembly is arranged on the inner side of the cabinet door and used for guiding gas at the top of the mounting plate to the bottom of the frequency conversion cabinet; according to the application, the frequency conversion cabinet and the cabinet door are adopted to place the radiating fins in the sealed space, and cooling gas is input into the frequency conversion cabinet through the external cooler on the outer side of the frequency conversion cabinet and is pumped out for recycling after heat exchange; the problems that the service life of a cooling part is shortened, the reliability of the cooling part is reduced and the failure rate of a wind turbine generator is high due to erosion of sand, dust, particles, catkins and salt mist in the field environment are solved, and impurities in air can be prevented from entering the frequency conversion cabinet in the air cooling heat dissipation process; and the influence on the service life and the reliability of the radiating fins is prevented.

The utility model relates to the related technical field of base stations, and discloses a base station subarea temperature control device which comprises an air conditioner arranged at the top of a base station and a plurality of temperature sensors arranged on the inner wall of the lower portion of the base station, the cross section of the air conditioner is of a square structure, an air pipe is connected to the lower portion of the air conditioner in a sleeved mode, and the upper portion and the lower portion of the air pipe are round. The lower part of the air pipe is sleeved with an air guide pipe, and the upper part of the air guide pipe is round and the lower part is round; a gear is arranged on the side wall of the air guide pipe, a motor is arranged on the side wall of the air pipe, the output end of the motor faces downwards and is connected with a rotating rod, and the lower end of the rotating rod is connected with a second gear matched with the gear. Compared with the prior art, the base station cooling system has the advantages that the base station can be cooled in a partitioned mode, and operation energy consumption and cold air loss are reduced.

The utility model discloses a kind of high-efficiency cooling fermentation tanks, relate to chemical technology field.Cooling water is better contacted with the whole outer wall of tank body by spiral channel, with the flow of cooling water along spiral channel, its coldness gradually loses, by the pitch variation of spiral channel, the flowability of cooling water gradually strengthens, the cooling effect of lower part of tank body is strengthened, so as to make up the coldness loss of cooling water, so that the cooling effect of upper and lower part of tank body is more balanced.The setting of constant pressure pipe prevents unnecessary pressure mutation when adjusting water pressure of water inlet end, and the suddenly increased water pressure of water inlet end is discharged to water outlet end, so as to balance the pressure of water inlet and outlet, further strengthen the stability of cooling work, and ensure the cooling efficiency.

The present invention provides a refrigerator with a cooling chamber located at the lower inner part of a freezing tank, comprising a box body, the box body comprising a storage tank, the storage tank comprising a freezing tank located at the lower part, the lower inner part of the freezing tank defining a cooling chamber, an evaporator arranged in the cooling chamber, the cooling chamber occupying the lower space inside the freezing tank, which can effectively raise the position of the freezing chamber located above the cooling chamber in the freezing tank, reduce the degree of bending when the user takes out and puts items in the freezing chamber, and improve the user's experience. The air supply fan is arranged in the cooling chamber and is located at the rear side of the evaporator, and a recessed portion recessed backward and downward is formed at the rear inner side of the bottom wall of the freezing tank for avoiding the air supply fan, so that the air supply fan is arranged lower, reducing the upper space of the freezing tank occupied by the air supply fan, increasing the upper space of the freezing tank, and ensuring the storage volume of the freezing chamber located above the cooling chamber.

The utility model discloses a low-cost heat dissipation vehicle-mounted camera which comprises a metal front shell, a plastic rear cover, a circuit board, a lens and a heat conduction assembly. The plastic rear cover is installed on the metal front shell, so that an installation cavity is formed in the metal front shell, and the installation cavity is used for installation of the heat conduction assembly and the circuit board. The plastic rear cover is provided with an inclined inlet wire connector, and the inlet wire connector is in butt joint with the circuit board in the installation cavity. The lens corresponds to the circuit board; the heat conduction assembly acts on the circuit board; the manufacturing cost is reduced through the plastic rear cover made of the plastic which is easier to produce, the required rear cover can be produced more simply based on the excellent moldability of the plastic, and the manufacturing requirement is reduced. And the heat dissipation efficiency is ensured through the heat conduction assembly, so that the camera is still adaptive to the camera with high pixel, multiple functions and high power consumption.

The utility model relates to the technical field of wet curtain cooling, and discloses a wet curtain cooling structure for greenhouse, which comprises a frame, and also comprises: a cooling mechanism and a protection mechanism. The cooling mechanism includes a water tank, a wet curtain main body, a recovery tank, an adjustment device, a first control switch and a second control switch. In the utility model, when the water supply of the adjustment device is too fast, a large amount of water accumulates inside the recovery tank until the water level rises to the position of the second control switch. The second control switch controls the adjustment device to reduce the water flow rate, avoiding water overflowing from the recovery tank and causing waste. When the water supply of the adjustment device is too slow, the water in the recovery tank decreases until the first control switch is exposed. The first control switch controls the adjustment device to increase the water flow rate, so that the water level of the reflux in the recovery tank always remains between the first control switch and the second control switch, ensuring sufficient water flowing through the wet curtain main body while avoiding waste, which is beneficial to avoiding resource waste and ensuring the heat dissipation efficiency.

The utility model provides a heat dissipation device and a nuclear power excitation simulation machine, and relates to the technical field of heat dissipation equipment, the heat dissipation device comprises an air guide pipe and an airflow guide piece, the air guide pipe is vertically arranged, and the air guide pipe is provided with a top end and a bottom end; the airflow guiding piece is arranged at the top end of the air guiding pipe and provided with a first air inlet, a first air outlet and a cavity, a partition plate is arranged in the cavity, the cavity is divided into an air inlet cavity and an air outlet cavity through the partition plate, the first air inlet is communicated with the air inlet cavity, the air inlet cavity is communicated with the air guiding pipe, and the first air outlet is communicated with the air outlet cavity. A second air inlet communicated with the bottom end is formed in the bottom of the air outlet cavity. According to the device, cold air enters from the top end, and hot air subjected to heat exchange is discharged from the top end, so that dust and other impurities in the air at the bottom can be effectively prevented from entering the equipment, the heat dissipation effect can be guaranteed, and the performance of the equipment can be guaranteed.

The utility model belongs to the technical field of valve production equipment, and particularly relates to a valve heat treatment cooling device which comprises a machine body, a cooling chamber and a circulating water chamber, the supporting frame is arranged between the cooling chamber and the circulating water chamber; the water storage tank is arranged at the top of the machine body; the conveying mechanism is used for conveying a valve to be cooled; the water pipe is arranged at the top of the cooling chamber; the multiple nozzles are arranged at the bottom of the water pipe and communicated with the water pipe, and the multiple nozzles are evenly distributed in the length direction of the water pipe at intervals; the air inlet is formed in the back face of the machine body and communicates with the cooling chamber, and a draught fan is arranged at the air inlet; the air outlet is formed in the back face of the machine body, communicates with the cooling chamber and is located on the right side of the air inlet; compared with the prior art, the finished product quality of the valve is improved, and the working efficiency is improved.