497 results about "Forced-air" patented technology

According to the thin forced air cooling piezoelectric pump for chip heat dissipation, the air inlet channel and the air outlet channel are separated from each other, the heat dissipation effect is good, meanwhile, noise is smaller, the size is small, and the thin forced air cooling piezoelectric pump can be flexibly integrated into various chip heat dissipation scenes with limited space. The piezoelectric pump structurally comprises a shell assembly and a piezoelectric ceramic assembly, a piezoelectric pump working cavity is formed in the shell assembly, the pressure in the piezoelectric pump working cavity can be changed through deformation of the piezoelectric ceramic assembly, and the piezoelectric pump working cavity communicates with an air inlet and an air outlet through an air inlet flow channel and an air outlet flow channel correspondingly; the air inlet and the air outlet are not located in the same end of the shell assembly, an air inlet piece assembly is installed at the joint of the air inlet flow channel and the piezoelectric pump working cavity, and an air outlet piece assembly is installed at the joint of the air outlet flow channel and the piezoelectric pump working cavity.

The invention belongs to the field of electric propulsion system motor driving, and particularly relates to a motor and controller integrated device for eVTOL. Comprising an integrated heat dissipation fan assembly, a motor assembly and a controller assembly, a motor and controller integrated heat dissipation scheme is adopted, forced air cooling heat dissipation is conducted on the controller through a motor integrated fan, the design of a cooling system is simplified, and the power-to-weight ratio is effectively increased. And meanwhile, the motor controller and the motor adopt coaxial equal-outer-diameter design, and the characteristics of high power density and high volume density are very suitable for being applied to an eVTOL aircraft electric propulsion system.

The invention relates to a long-pressure short-pumping dust removal system for a fully-mechanized excavation face of a coal mine with self-adaptive matching parameters, and belongs to the technical field of coal mine dust prevention. In order to solve the problems of parameter matching lag, air duct positioning misalignment and emergency response delay of an existing dust removal system, a dust concentration sensor, a gas sensor, a laser distance measuring sensor and an area controller cooperate to construct a dynamic matching model of the press-in air volume, the dust suction air volume and the wall-attached air duct distance; + / -0.2 m high-precision positioning is realized by adopting a servo traction mechanism, and air distribution is adjusted in real time in combination with a nonlinear control algorithm. According to the system, the dust removal efficiency is improved to 85% or above, the gas standard exceeding response time is shortened to be within 90 seconds, the positioning error is reduced by 80%, the fan energy consumption is reduced by 18%-22%, and efficient and safe production of a coal mine is effectively guaranteed.

The invention relates to a high-power-density marine split-type permanent magnet shaft generator, which comprises a split-type stator, a split-type rotor and a cooling chamber, and is characterized in that a circulating water channel is arranged on the outer wall of a base of the split-type stator and is connected through a cooling water pipe; an air inlet and an air outlet are formed in two ends of the base; the cooling chamber is integrated at the top of the generator; the split-half rotor comprises a permanent magnet, a rotor core, a rotor support and an expansion sleeve. The rotor core is provided with a plurality of ventilation holes in the axial direction. The generator adopts a stator surface water cooling and forced air cooling mixed cooling system, and a water cooling channel and an air cooling channel operate independently and dissipate heat cooperatively. Through the structural design of the generator, the stator and the rotor of the generator are fully cooled, the heat dissipation efficiency of the generator is improved, and the power density of the generator is improved. A generator rotor permanent magnet is of a tangential structure, and the power density of the generator is further improved. And the ventilation holes are axially added to the rotor iron core, so that the weight of the rotor is reduced, and the influence on the original shafting of the ship is reduced.

The new energy charging pile temperature control device comprises a charging pile body, a temperature control opening is formed in the bottom of the side end face of the charging pile body, a temperature control assembly is clamped in the temperature control opening, and an air cooling assembly is connected to the position, corresponding to the temperature control assembly, in the charging pile body. The temperature control assembly is used for driving air to enter the charging pile body through the temperature control assembly for forced air cooling; according to the charging pile, the air cooling fan drives air to penetrate through the temperature control assembly to enter the charging pile body for forced air cooling in the rapid rotation process, the air filter plate can effectively filter dust in the air in the process that the air penetrates through the air filter plate, and in the process, liquid water in the temperature control frame absorbs heat in the air, so that the heat in the air is dissipated; due to the fact that hot air has the characteristic of flowing upwards, the cooled air enters the charging pile body and then flows from bottom to top for forced air cooling, and therefore dissipation of heat of power equipment arranged in the charging pile body is accelerated, and the heat carried in the air is taken away through liquid water single circulation.

The present invention discloses a gas infrared radiation and hot air dual-mode drying furnace for drying printing inks, which comprises a furnace body housing. Inside the furnace body housing, there are a heating chamber and two machine position chambers. The two machine position chambers are symmetrically distributed at the top and bottom of the heating chamber. An inlet and an outlet penetrating through the furnace body housing are respectively arranged on both sides of the middle of the heating chamber. The present invention heats printing paper through two modes of gas infrared radiation and hot air. Due to the physical properties that infrared rays can penetrate and objects can actively absorb the heat of infrared rays, the ink and the interior of the paper can be quickly heated. In the later stage, the high-temperature flue gas waste gas generated by the front-end gas infrared radiation burner is used, and is guided to the air knife for drying through the hot air circulation mode by a blower and a forced air blower. The gas consumption of the burner is lower, and the heating speed is faster, further reducing the gas energy consumption. Under the condition of the same gas consumption, the speed of the printing press is significantly increased, meeting the requirement of lower gas energy consumption of existing conventional gas burners.

The invention relates to the technical field of server heat dissipation, in particular to a combined heat dissipation device of a server, which comprises a cabinet body with a mounting space, and a circulating air duct, a first air inlet of the circulating air duct and a first air outlet of the circulating air duct are arranged on one side in the mounting space; the circulating fan is lower than the first air inlet; the supporting layers are arranged in the mounting space in the height direction, each supporting layer is provided with a supporting face, the supporting faces are provided with air passing holes, auxiliary fans are arranged below the supporting layers, radiators are arranged on the upper sides of the auxiliary fans, and electronic refrigeration pieces are arranged on the radiators; and a plurality of first temperature sensors are arranged on each supporting layer. The heat dissipation device has the advantages that a new heat dissipation means is applied to heat dissipation of server equipment, and the defects that traditional server heat dissipation mainly depends on a forced air cooling technology or cold air is forcibly manufactured for cooling by matching the forced air cooling technology with an air conditioning refrigeration technology are overcome.

The invention relates to the technical field of transformers, in particular to a dry-type transformer for double-split photovoltaic power generation, which comprises a basic assembly, and the basic assembly comprises a three-phase column-type iron core and a coil winding arranged on each phase column in a sleeving manner; the forced air cooling assembly comprises a main air pipe arranged on one side of the lower clamping piece, air blowers are arranged on the two sides of one side of the main air pipe, and the air outlet ends of the air blowers communicate with the interior of the main air pipe. The forced air cooling assembly further comprises a lower sealing air guide structure, a middle sealing air guide structure and an upper sealing air guide structure. Rapid airflow is effectively formed in the annular space through the forced air cooling assembly, hot air gathered in the sound insulation housing is exhausted according to the Bernoulli principle in cooperation with the Laval nozzle and the variable-diameter horn pipe, the heat dissipation efficiency is improved, and therefore it is ensured that the environment temperature is appropriate when the transformer works, the annular space is exposed through the high-temperature linkage assembly, and the heat dissipation efficiency is improved. Time is gained for first-aid repair of workers, and safety is improved.

The invention relates to the technical field of transformers, and discloses an intelligent large box transformer which comprises a box transformer body, a fixing frame is fixedly mounted at the upper end of the box transformer body, and a top plate capable of moving up and down is arranged in the fixing frame. According to the device, the temperature is monitored in real time through the temperature sensor fixed to the top of the shell, when the temperature exceeds a threshold value, the controller drives servo motors of the two lifting assemblies to operate synchronously, movable bases move oppositely, inclined supporting rods are pushed to jack a top plate, the top plate can be lifted to the upper edge of a supporting frame to the maximum extent, and after the top plate is lifted, the effective ventilation area of heat dissipation holes is multiplied; and meanwhile, the top plate is lifted to link the protection assembly to be unfolded, the first mounting frame is obliquely erected along with the top plate, and a first protection net arranged in the first mounting frame immediately covers the heat dissipation opening, so that heat dissipation is guaranteed, impurities are prevented from entering the shell, and the heat dissipation efficiency is improved. And dynamic balance between heat dissipation and protection is realized.

The invention discloses a dustproof box transformer with a ventilation function, and relates to the technical field of box transformers, the dustproof box transformer comprises a frame, ventilation box doors with air inlets are movably connected to two ends of a transformer chamber and one side of a high-voltage chamber and one side of a low-voltage chamber, and flow guide mechanisms corresponding to the air inlets are mounted below the inner sides of the ventilation box doors. The flow guide mechanism on the inner side of the ventilation box door abuts against the bottom of the equipment shell through the elastic telescopic plate, external cold air is forcibly guided to the bottom of the equipment, heat dissipation airflow penetrating through the whole equipment from bottom to top is formed, and the problems that in a traditional heat dissipation scheme, airflow is diffused, and key heating areas cannot be effectively cooled are solved; an independent heat dissipation mode and a linkage heat dissipation mode are intelligently switched according to the temperature threshold value of the high-voltage chamber and the low-voltage chamber, only forced air draft is conducted on the transformer chamber in the non-high-temperature period, a communication hole is opened at the high temperature to achieve global heat dissipation, the heat dissipation effect is guaranteed, meanwhile, energy consumption is reduced, and the energy-saving and intelligent requirements are met.

The invention relates to the field of immersed cooling liquid of transformers, and discloses a heat dissipation mechanism and an efficient immersed cooling liquid cooling device.The heat dissipation mechanism comprises an ionic wind heat dissipation piece, and the ionic wind heat dissipation piece comprises a flow guide pipe, a net electrode located at the top end of the flow guide pipe and a needle electrode located at the top end of the flow guide pipe; the flow guide pipe is arranged to be in an inverted cone shape. The mounting frame comprises an insulating frame and a connecting piece arranged on the outer side of the insulating frame; the number of the mounting racks is two, and the two mounting racks are respectively used for mounting the flow guide pipe and the needle electrode; according to switching of multiple cooling modes under low, medium and high load operation of the transformer body, the adaptive capacity of the transformer body to load changes is improved, meanwhile, forced air cooling convection can be achieved without starting a draught fan, the heat dissipation effect of immersed cooling liquid is guaranteed, and noise is avoided.

The utility model provides a sealed case, which is characterized in that an upper top plate and a lower bottom plate of the case are provided with air ducts, and the whole frame of the case and the air ducts are formed by welding connection; the fan is arranged at the top of the case, a plurality of pairs of slots are formed in an upper top plate and a lower bottom plate in the case, a connector is arranged on each pair of slots, the connectors are fixed in the slots through wedge-shaped locking devices, and heat of the connectors is transmitted to the air duct plate through the heat dissipation plate and then is taken away in a forced air cooling convection mode; the air flow only circulates in the air channel and is not directly contacted with electronic components on the connector, so that the inside of the case is completely isolated from the outside; sealing rings are arranged at the matching positions of the front panel and the rear panel and the welding box body, so that a totally-closed case form is formed. Under the conditions that the external environment is severe and the space size and the weight are limited, the high-power-consumption electronic equipment case can be designed through the configuration.

The utility model discloses an overvoltage protection assembly and system formed by voltage-sensitive nonlinear elements. The assembly comprises an insulating core tube, a plurality of nonlinear elements, a first electrode, a second electrode, an insulating cylinder, a cooling fan and a temperature sensor. The assembly can perform forced air cooling on the nonlinear element, and is timely in response, good in cooling effect, simple and compact in structure and easy to integrate.

According to the furnace top heat supply type annular roasting system, the annular working face is adopted, the cooling section is divided into four sections, hot air from the furnace hoods flows to the four process sections, hot air generated by the furnace hoods of the first cooling section and the second cooling section is used for pellet roasting after being heated in a pipeline, hot air generated by the furnace hoods of the third cooling section and the fourth cooling section is used for preheating and forced air drying of pellets, and therefore the pellet roasting efficiency is improved. By means of the arrangement, hot air utilization is more sufficient and reasonable, energy is saved, heat distribution is even, and pellet underfiring and overfiring are prevented. The preheating section and the roasting section adopt a furnace cover top air supply technology, so that bias flow of hot air in a furnace cover is reduced, and the technology is a guarantee for uniform roasting of pellets. Drying, preheating, roasting and cooling processes of the pellets are all completed on one device, and operation is easy. And compared with a belt type roasting machine, trolleys are reduced by half, and the investment is relatively low. The system has the characteristics of small occupied area, uniformity in pellet roasting and low investment cost, and is suitable for medium and small-scale production. The invention further provides a process method of the furnace top heat supply type annular roasting system.

The utility model relates to an air duct structure of a forced air cooling brake resistor. The air duct structure is arranged on a resistor box body, the resistor box body comprises a box body air duct and a resistor element arranged in the box body air duct, and the air duct structure comprises a conical air guide device, a fan, an air inlet mesh enclosure and an air outlet shell arranged at the outlet end of the box body air duct which are sequentially connected with the inlet end of the box body air duct; the air inlet mesh enclosure is a cuboid mesh enclosure, a fan receding hole is formed in one side of the air inlet mesh enclosure, and fan blades of the fan are rotationally arranged at the fan receding hole. Compared with the prior art, the air duct structure enables air flow to be evenly distributed in the air duct of the box body, prevents the air flow from generating a blind area in the air duct and causing local over-temperature of a brake resistor, can effectively reduce the adverse effect of walking wind generated when a train travels on heat dissipation of the resistor, and improves heat dissipation efficiency.

The utility model relates to a water turbine top cover pressure reducing, water draining and air supplementing shared system which is used for water turbine top cover pressure reducing, water draining and air supplementing and comprises a top cover, a water draining and air supplementing branch pipe, a water draining and air supplementing annular pipe, a water draining pipe, an air supplementing pipe and a reserved forced air supplementing pipe. The drainage pipe is led out from the pressure reduction drainage air supply ring pipe and drains water to a water turbine draft tube, the air supply pipe is led out from a power plant to the drainage air supply ring pipe, a reserved forced air supply pipe is arranged on the air supply pipe, and forced air supply can be conducted on the water turbine when necessary. According to the water turbine top cover pressure reduction drainage and air supply shared system, the functions of a top cover pressure reduction drainage pipe, a vacuum breaking valve and a reserved forced air supply pipe are integrated, and top cover equipment arrangement can be optimized.

The utility model discloses a drying device for quartz crystal material production, which comprises a drying box, the bottom end of the drying box is provided with an air blowing assembly, shifting mechanisms are arranged in the drying box at equal intervals, placing mechanisms are arranged in the drying box at equal intervals through mounting assemblies, and the placing mechanisms are matched with the shifting mechanisms. Exhaust pipes matched with the air blowing assembly are symmetrically arranged at the top end of the drying box. According to the forced air drying device, the stirring mechanism works during forced air drying, then quartz crystal materials on the containing disc can be stirred and turned over, the quartz crystal materials are in a dynamic state instead of a static state during drying, the forced air drying effect can be ensured, the time needed by drying is shortened, and meanwhile the situation that drying is not thorough is avoided.

Portable body cooling apparatus, particularly wearable on subjects, the apparatus comprises a channeled assembly including a coupled pair of channels longitudinally extending adjacent to each other, and wearable along outer contour of a subject's body part. The apparatus also comprises a forced air flow assembly connected to channeled assembly, for generating and driving forced flow of air into and through channeled assembly and facilitate indirect evaporation of liquid inside the channeled assembly, so as to produce forced flow of cool air exiting from channeled assembly and directed onto the subject, thereby cooling the subject. Also disclosed is a corresponding method of cooling a subject.

The invention provides a vacuum hot-pressing forming machine for silicone rubber production and a forming method, and relates to the technical field of silicone rubber production. The vacuum hot-pressing forming machine for silicone rubber production comprises a machine body, a hydraulic driving device, a rubber injection device, a vacuum adsorption device and an upper pressing head. By means of an innovative four-station circulation operation mode, synchronous operation of mold preheating, material forming, product cooling and finished product taking is achieved, the productivity in unit time is greatly improved, accurate temperature control is conducted on the forming mold through the directional forced air cooling technology, the cooling waiting time is greatly shortened, and meanwhile the production efficiency is improved. The cooling uniformity of all parts of a product is remarkably improved, waste heat generated in the cooling process is converted into mold preheating energy through an original heat energy recovery system, an energy closed loop in the production process is constructed, the problem that traditional equipment is high in preheating energy consumption is solved, and structural complexity caused by an additional heating device is avoided.

The invention provides a cooling device for a wind generating set, and mainly relates to the technical field of wind power generation cooling. A cooling device for a wind generating set comprises an integrated cooling platform, an intelligent control module and an external cooling heat dissipation module, and the integrated cooling platform is composed of a single cooling pump station, an external cooling heat dissipation device and a parallel type cooling branch. The parallel cooling branch is connected with the gear box, the generator and an independent heat exchange assembly of the converter through an intelligent diverter valve, and a cooling pump communicated with the parallel cooling branch is arranged in the cooling pump station. The device has the beneficial effects that the device adopts a one-pump multi-load integrated design, and the pipeline connecting length is greatly reduced, so that the layout complexity and the leakage risk in a cabin are reduced; and the external cooling heat dissipation module adopts a natural air cooling and forced air cooling self-adaptive composite structure, so that the heat dissipation efficiency of the device is effectively improved.

The utility model provides a hot air circulation system for raising the temperature of a hearth of a roasting machine, which comprises a forced air drying section, an air draft drying section, a preheating section, a roasting section, a soaking section, a first cooling section, a second cooling section and a third cooling section which are sequentially arranged, the second cooling section comprises a front second cooling section and a rear second cooling section which are independently arranged, and a partition wall is arranged between the front second cooling section and the rear second cooling section. Outlets of the front secondary cooling section and the primary cooling section are communicated with flue gas inlets of the soaking section and the roasting section through pipelines, and an outlet of the rear secondary cooling section is communicated with a flue gas inlet of the preheating section through a pipeline. According to the hot air circulating system, the secondary cooling section is divided into two parts, flue gas recovered by the rear part with lower temperature enters the preheating section and does not enter the roasting section, but flue gas with higher temperature in the front section is recovered and introduced into the roasting section, so that the hot air temperature of the roasting section is increased, the temperature of a hearth is increased, and the energy consumption is reduced under the same condition. And the pellet quality requirement can also be met by using the low-calorific-value fuel, so that the production cost is reduced.

An unmanned aerial vehicle for vertical take-off and landing is disclosed. Cylinders installed along its perimeter are rotatable. The body has inlets leading to the gas intake and supply area, where centrifugal impellers are installed at the top and bottom to create a forced gas flow. At the outlet from the gas intake and supply area, and along the perimeter, independent flow channels extend into a tunnel, which narrows at the outlet. The forced air created by rotation of the impellers passes through cells of the flow channels, which allows one continuous flow to split into several smaller ones and evenly distributes the air supply along the cylinders' length. The flows pass through the tunnel and reaches the cylinders. The forced air that flows to the rotating cylinders produces the Magnus effect on each cylinder. The torque of the upper impeller is compensated by the torque of the lower impeller.

The invention relates to the technical field of vehicle auxiliary lighting, in particular to a high-heat-conduction vehicle lamp heat dissipation fin structure and a connecting method.The high-heat-conduction vehicle lamp heat dissipation fin structure comprises a protective shell, a light transmitting assembly, a vehicle lamp body, an air guiding unit and a cooling assembly.The light transmitting assembly is fixedly installed on the upper portion of the protective shell to form a sealed cavity; the automobile lamp body is installed on the inner side of the protective shell, the air guide unit comprises a first air guide pipe and a second air guide pipe to form an airflow channel, the cooling assembly comprises an electric motor and a heat dissipation unit, and the heat dissipation unit is in transmission connection with the electric motor, surrounds the automobile lamp body and keeps a non-contact matching state. The heat dissipation unit is driven by the electric motor to rotate to generate forced airflow and is matched with the air guide unit to form a circulating heat dissipation path. The parking lamp has the advantage that the internal temperature of the lamp sealing cavity can be adjusted, and the problem of heat accumulation caused by long-time working of a traditional parking lamp in a static state is effectively solved.

The present invention relates to the technical field of transformers, and specifically relates to a dry-type transformer for dual-split photovoltaic power generation, including a basic component, the basic component includes a three-phase column-type iron core, and coil windings sleeved on each phase column; the forced air-cooling component includes a main air duct provided on one side of the lower clamp, both sides on one side of the main air duct are provided with blowers, and the air outlet ends of the blowers are communicated with the inside of the main air duct; the forced air-cooling component further includes three sealing air guiding structures at the lower, middle, and upper positions. By the forced air-cooling component, a fast air flow is effectively formed in the annular gap. According to Bernoulli's principle, in cooperation with a Laffal nozzle and a variable-diameter bellows, the hot air accumulated in the sound insulation cover is discharged, improving the heat dissipation efficiency, thereby ensuring the suitability of the ambient temperature when the transformer is working. The annular gap is exposed through the high-temperature linkage component, winning time for the emergency repair by the staff and improving safety.

The invention relates to the field of nuclear turbine operation, in particular to a nuclear turbine forced air cooling system and method. The system comprises a steam turbine steam loop, an air generation and control module and a shaft seal air extraction module, and the air generation and control module is connected to a high-pressure drain tank, a medium-pressure water conveying pipe and a medium-pressure extraction steam through compressed air inlet hoses; and the shaft seal air exhaust module is connected with the middle air seal. The method comprises the steps that after the steam turbine breaks vacuum, it is confirmed that the state of the steam turbine meets the input condition of the nuclear steam turbine forced air cooling system; an exhaust fan is started, an air generation and control module is put into operation, the air flow is controlled to reach a preset value, and the temperature and pressure values of air are controlled to be preset values; air is controlled to enter the steam turbine according to the preset flow, the air running flow path comprises a high-pressure flow path, a first medium-pressure flow path and a second medium-pressure flow path, and the shaft seal air exhaust module exhausts air in the steam turbine; through air circulation, rapid cooling of the steam turbine is achieved. According to the invention, safe, reliable and efficient rapid cooling is realized, the shutdown maintenance time of the nuclear turbine is saved, and the availability of a unit is improved.

The utility model discloses a silicon dioxide forced air drying and conveying device which comprises a drying tank and is characterized by further comprising a linkage mechanism, a feeding port is formed in the drying tank, a fixing seat is fixedly arranged on the outer wall of the top of the drying tank, a hot air pipe groove is formed in the fixing seat, and a stirring shaft groove is formed in the bottom of the hot air pipe groove in a communicated mode. A hot air pipe is connected into the hot air pipe groove, a stirring shaft is rotationally arranged in the stirring shaft groove, the stirring shaft is a hollow shaft and communicates with the hot air pipe, a motor is fixedly arranged on the portion, located on one side of the fixing base, of the drying tank, and the output end of the motor penetrates through the inner wall of the top of the drying tank and is in linkage with the stirring shaft through a linkage mechanism. A plurality of stirring rods are fixedly, uniformly and annularly arranged on the outer wall of the stirring shaft, a plurality of groups of stirring rods are uniformly arranged in the axial direction of the stirring shaft, the stirring rods are hollow and are communicated with the interior of the stirring shaft, a plurality of air holes are uniformly formed in the stirring rods, a discharging pipe is arranged at the bottom of the drying tank, and a discharging valve is arranged in the discharging pipe. The drying effect is good and the efficiency is high.

The utility model discloses an outdoor energy storage cabinet, and particularly relates to the technical field of energy storage cabinets, a partition plate extending longitudinally is mounted in the middle of an inner cavity of a cabinet body, the partition plate divides the inner cavity of the cabinet body into a first chamber and a second chamber, a gap is reserved between the bottom end of the partition plate and the bottom of the inner cavity of the cabinet body to form a channel, and an airflow replacement chamber is mounted at the top of the cabinet body. A cooling mechanism is installed in an inner cavity of the airflow replacement chamber, a first open groove communicating with the interior of the airflow replacement chamber is formed in the top of the first chamber, and a second open groove communicating with the interior of the airflow replacement chamber is formed in the top of the second chamber. According to the utility model, forced air cooling and semiconductor refrigeration are combined, a dual heat dissipation mechanism significantly improves the cooling efficiency and adapts to an outdoor high-temperature environment, in the heat dissipation process, closed-loop air circulation is adopted to reduce external dust entering, the service life of equipment is prolonged, energy storage equipment and a heat dissipation system are managed in a partitioned manner, the layout is reasonable, and the space is saved.

The invention discloses a composite winding structure of a multi-layer stacked 5S inductor, and relates to the technical field of winding structures, the composite winding structure comprises an inductor, through composite winding integration of a mixed winding, a high-frequency winding and a low-frequency winding, the component complexity is simplified, and meanwhile low-frequency and high-frequency electromagnetic characteristics are compatible; a thermal-force coupling intelligent regulation and control system is constructed by utilizing the heat conduction characteristic of an aluminum nitride ceramic chip and the deformation response of piezoelectric ceramics and memory alloy, the interlayer spacing of a magnetic wave-absorbing material is dynamically adjusted to optimize the sensing quantity and accelerate heat dissipation, and insulation protection of key components is realized through an insulating material film; based on a sliding column contact switching mechanism driven by a magnetic field, the effective number of turns of the mixed winding is adjusted in real time, and inductance parameters are dynamically adjustable; furthermore, magnetic-elastic interaction of a permanent magnet and a porous rubber body is combined, airflow is generated through intermittent extrusion, and circulating type forced air cooling heat dissipation is achieved in cooperation with a heat gathering plate.

The application provides a forced air cooling horizontal refrigerator, comprising a cabinet and a refrigeration system arranged in the cabinet, the cabinet is provided with a refrigeration chamber with a top opening, an evaporator chamber arranged close to the bottom of the refrigeration chamber and communicated with the refrigeration chamber, the refrigeration system comprises an evaporator for refrigerating the refrigeration chamber, the evaporator comprises a refrigeration evaporator and an auxiliary evaporator arranged in parallel, the refrigeration evaporator is arranged in the evaporator chamber, and the auxiliary evaporator is at least partially arranged at a position close to the top opening of the cabinet. Cold quantity is provided for the refrigeration chamber by the auxiliary evaporator when the heating wire defrosts.

A hydroponic system for optimizing a growing environment is disclosed. The system includes a growth chamber, with one or more growing racks disposed in therein. An air unit is configured to force air into a first end wall and a second end wall on opposite sides of the growth chamber. An exhaust fan is disposed on a top wall and generally centered with respect to the growth chamber. The exhaust fan is configured to draw the forced air out of the growth chamber. A controller controls the make-up air unit and the exhaust fan to achieve a desired vapor pressure deficit.