119 results about "Wind circulation" patented technology

The invention discloses a rotating wheel dehumidification system operation control method and system. The dehumidification system comprises a dehumidification rotating wheel, a treatment air circulation unit arranged on the treatment side of the dehumidification rotating wheel and a regeneration air circulation unit arranged on the regeneration side of the dehumidification rotating wheel. The regenerated air circulating unit comprises an air heat exchanger, an electric heater and a heat pump heater; the heat pump heater comprises an evaporator, a condenser and a compressor; the control method comprises the steps that the temperature of regeneration air entering the dehumidification rotating wheel is detected to obtain the regeneration temperature; according to the regeneration temperature and a preset regeneration temperature threshold value, the heating power of the electric heater is dynamically adjusted, and the heating power is larger than or equal to zero and smaller than or equal to rated power. According to the scheme, regeneration exhaust heat can be recycled to the maximum extent, the energy efficiency ratio of the system is remarkably increased, dependence on a high-energy-consumption electric heater is reduced, the operation cost is saved, the regeneration temperature is dynamically controlled, and stable operation under different working conditions is ensured.

The invention discloses an additive manufacturing powder bed preheating system and method based on hot air-partition radiation synergy. The additive manufacturing powder bed preheating system comprises a preheating outer box, a powder bed, a hot air circulating system, a partition radiation heating system and a layering synergy controller. The method has the beneficial effects that an upper-layer steady-state optimization and lower-layer dynamic compensation framework is adopted, wherein the upper layer aims at energy efficiency and temperature uniformity, and the temperature and the air speed of a hot air inlet are optimized; and the lower layer is based on real-time temperature feedback, the partition radiation power is adjusted through a feedback + feedforward decoupling algorithm, local temperature disturbance is compensated, hot air rapidity and partition radiation accuracy are fused, the problems of response lag, space coupling and laser preheating cooperation deficiency are solved, rapid, uniform and dynamic regulation and control of the temperature field of the powder bed are achieved, the additive manufacturing quality is improved, and the production efficiency is improved. The method is suitable for high-precision manufacturing of various high polymer materials.

The invention provides a kiln head waste heat utilization method and relates to the technical field of cement production, a kiln head waste heat utilization system is used, the kiln head waste heat utilization system comprises a coal mill circulating air unit and a waste heat power generation air circulating unit, and the coal mill circulating air unit is connected between a coal mill system and a grate cooler air collecting box. The waste heat power generation wind circulation unit at least comprises a first waste heat power generation wind sub-circulation unit, and the kiln head waste heat utilization system cancels a coal mill waste gas discharge coal mill chimney; the kiln head waste heat utilization method comprises the following steps that smoke entering a coal mill system passes through a coal mill circulating air unit and then enters a grate cooler air collecting box to be recycled through the coal mill circulating air unit; a part of smoke entering the waste heat boiler enters an air collecting box of the grate cooler for recycling through the first waste heat power generation air sub-circulation unit by means of the first waste heat power generation air sub-circulation unit. The problems of reducing air consumption, reducing waste gas emission and recovering waste heat of waste gas are solved.

The invention discloses a thermal power plant boiler fly ash fluidized bed heat storage and release system and a heat storage and release method, and relates to the technical field of electric heat storage. The system comprises a heating fluidized bed, a fly ash heat storage tank and a fluidization heat release tank, the bottom and the top of the fly ash heat storage tank are connected with the bottoms and the tops of the heating fluidized bed and the fluidization heat release tank through hot air circulating pipes respectively, and circulating fans are arranged on the hot air circulating pipes; fluidized bed partition plates are arranged in the heating fluidized bed, the fly ash heat storage tank and the fluidization heat release tank; a water-cooled wall tube is arranged in the fluidization heat release tank, the lower end of the water-cooled wall tube is connected with a water supply and steam pocket downcomer, and the upper end of the water-cooled wall tube is connected with a steam pocket. The coal ash of the thermal power plant is directly used as a heat storage medium to construct a closed-loop heat storage and release process, the coal ash disposal problem is solved, the material cost of the system is reduced, meanwhile, the peak regulation requirement of the power grid is met, resource utilization of the coal ash of the thermal power plant is achieved, the material cost of the heat storage system is reduced, and an efficient heat storage solution is provided for peak regulation of the power grid.

The utility model belongs to hot -blast circulating device technical field discloses hot -blast circulating device. This hot -blast circulating device includes heater, circulating fan, first air pipe, second air pipe, cylinder, third air pipe, cyclone dust collector and fourth air pipe, and the air outlet of heater is communicated with the first end of first air pipe, and can output heating air, the second end of first air pipe is communicated with the air inlet of circulating fan, the first end of second air pipe is communicated with the air outlet of circulating fan, the material of waiting for heating can be placed in the cylinder, the air inlet of cylinder is communicated with the second end of second air pipe, the air outlet of cylinder is communicated with the first end of third air pipe, the second end of third air pipe is communicated with the air inlet of cyclone dust collector, and cyclone dust collector is configured as removing the sundries in the third air pipe, and the both ends of fourth air pipe are communicated with the air outlet of cyclone dust collector and the air inlet of circulating fan, this hot -blast circulating device avoids sundries to adhere to heater, and heating air circulation is unobstructed, reduces cleaning workload.

The application relates to the technical field of atmospheric turbulence simulation, and discloses a layered atmospheric turbulence simulation device, which comprises a box body, multiple detection windows are oppositely arranged on the top and the bottom of the box body, multiple transparent partitions are horizontally arranged in the box body, the multiple transparent partitions are used for dividing the box body into multiple chambers, multiple groups of rectifying baffles are obliquely arranged in the multiple chambers, the multiple detection windows are located between two adjacent rectifying baffles, a wind circulation assembly comprises a fan and a circulation pipe, the fan is arranged on the outer side wall of the chamber, an air outlet of the fan is connected with the chamber, one end of the circulation pipe is connected with an air inlet of the fan, and the other end of the circulation pipe is connected with one side of the chamber far away from the air inlet of the fan, multiple temperature adjusting assemblies are arranged in the multiple chambers respectively, a humidity adjusting assembly is connected with the multiple chambers, and the layered atmospheric turbulence simulation device can simulate different intensity turbulence fields, can realize the control and superposition of multiple different turbulence fields, and can more truly simulate atmospheric turbulence.

1. The name of the design product: fireplace fan (30). 2. The use of the design product: for heat dissipation of fireplace, for blowing circulating air flow. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The present invention discloses a powdered food conveying device, which relates to the field of food processing technology and includes a conveying cylinder assembly, a feeding assembly being provided on one side of the conveying cylinder assembly, a wind circulation mechanism being provided on one side of the feeding assembly, and a feeding mechanism being provided on the other side of the feeding assembly; the powdered food conveying device is provided with components such as a wind circulation mechanism and a feeding mechanism, and the wind circulation mechanism is able to blow gas to the outer shell of the transfer chamber through the air outlet pipe and to extract the air inside the conveying cylinder body through the return pipe through the mutual cooperation relationship between the air outlet pipe and the return pipe, thereby forming an internal air circulation. At the same time, the gear transmission assembly of the feeding mechanism drives the feeding cylinder to rotate clockwise and the second scraper to rotate counterclockwise, and the two rotate in opposite directions and cooperate with each other. Thus, the device can efficiently convey powdered food by combining wind power and mechanical transmission, and the second scraper can scrape off powder on the inner wall of the feeding cylinder to reduce material residue.

This invention discloses an intelligent collaborative control system and method for preventing blockage and corrosion at the cold end of an air preheater. The system includes a hot air circulation module, a gradient temperature control layer, a swirl purging device, and an intelligent control system. The hot air circulation module forms an adjustable heat source by mixing airflows of different temperatures. The gradient temperature control layer is used to create a bottom-up temperature gradient at the cold end. The swirl purging device is used for efficient dry cleaning of ash accumulation on the heat exchange elements. The intelligent control system coordinates temperature regulation and the purging process based on operating parameters. This invention introduces a predictive model to anticipate pressure difference trends and combines it with an acid dew point temperature control strategy to achieve linked control of mixed hot air temperature regulation and preventative purging, thereby maintaining the cold end temperature stably within a safe range and promptly suppressing ash accumulation.

This invention discloses a zero-emission synergistic waste heat utilization system and method for sintering ring cooler exhaust gas. The exhaust gas outlets of sections I and II of the ring cooler are connected to the exhaust gas inlet of a waste heat boiler; the exhaust gas outlet of the waste heat boiler is connected to the air inlet of a first circulating fan, and the air outlet of the first circulating fan is divided into two paths, respectively connected to the section I and section II air boxes of the ring cooler, forming a flue gas circulation between sections I and II of the ring cooler; the air inlet of the first cooling fan is connected to the outdoor environment; the air outlet of the first cooling fan is connected to the section V air box of the ring cooler; the exhaust gas outlet of section V of the ring cooler is sequentially connected to the second circulating fan and the section IV air box of the ring cooler; the exhaust gas outlet of section IV of the ring cooler is sequentially connected to the third circulating fan and the section III air box of the ring cooler; the exhaust gas outlet of section III of the ring cooler is connected to the hot air hood of the sintering machine. This invention achieves efficient utilization of high-grade thermal energy.

The utility model discloses metal zipper manufacturing equipment with an excessive drying prevention function, which comprises a rack, the top of the rack is fixedly connected with a supporting frame, the outer wall of the supporting frame is provided with a conveying assembly, one side of the supporting frame is provided with a spraying machine, one side of the rack is provided with a conveying belt, and the conveying belt is provided with a conveying belt. A machine shell is installed outside the conveying belt, an air cylinder is installed at the top of the machine shell, the output end of the air cylinder is fixedly connected with a smoothing scraping plate, a drying assembly is installed on one side of the machine shell, and a discharging hopper is fixedly installed on one side of the drying assembly. According to the metal zipper manufacturing equipment with the excessive drying prevention function, the drying equipment with the precise temperature and air speed control function is selected, the hot air circulation drying assembly is utilized, the temperature in the drying oven is uniform, heat dissipation holes are additionally formed under the condition that the internal temperature is high, and therefore the temperature of internal circulation air is reduced, and the service life of the metal zipper is prolonged. And the condition that the coating is excessively dried due to local overheating is reduced.

The invention relates to the technical field of kitchen equipment, in particular to visual cooking equipment which comprises a machine body, a machine head covering the machine body and a cooking container located in the machine body, an air circulation assembly is arranged in the machine head, at least the upper portion of the cooking container is made of a high-temperature-resistant transparent material, and an air guide hole is formed in the lower portion of the cooking container. The machine body comprises a base with an upward opening and a high-temperature-resistant transparent shell located above the base, the transparent shell is connected with the base in a sealed mode, an interlayer cavity is formed by the transparent shell and the cooking container, and a first heating piece is arranged in the interlayer cavity. At least the upper portion of the cooking container is transparent, the cooking container is matched with the transparent shell to form a double-layer transparent structure, the omnibearing visual effect can be achieved, a user can observe the coloring condition and the cooking progress of food from the side face without dead angles, the problem that heat is instantly lost due to the fact that a machine head is frequently opened is fundamentally solved, cooking efficiency is guaranteed, and energy is saved.

The invention discloses a lighting device with a mosquito and fly repelling function, and belongs to the technical field of mosquito and fly repelling. A lighting device with a mosquito and fly repelling function comprises a mosquito repelling assembly, a mosquito killing assembly and a lighting assembly, the mosquito repelling assembly comprises an air circulation system, the air circulation system comprises an air inlet duct, an air outlet duct and a driving part, the mosquito killing assembly is arranged in the air inlet duct, the driving part sucks mosquitoes and flies into the mosquito killing assembly, and the lighting assembly is arranged on the mosquito killing assembly. The mosquito killing assembly kills mosquitoes and flies through electric shock, the air outlet channel comprises an air outlet, air blown by the air outlet is upwards blown to the outer surface of the lighting assembly, the lighting assembly comprises a lamp holder and a lamp source, and the lamp source is arranged in the lamp holder. According to the invention, through the arrangement of the air circulation system, air can be blown to the outer surface of the lighting assembly, mosquitoes and flies are repelled by utilizing wind power, and the mosquitoes and flies are prevented from lying on the outer surface of the lighting assembly, so that the problem that a common lighting lamp in the prior art easily attracts the mosquitoes and flies to cause pollution to a lampshade is solved.

The utility model belongs to the technical field of asphalt mixture stirring equipment, and relates to a counter-flow asphalt reclaimed material heating hot air circulating system which comprises a hot blast stove, a burner is connected to the outer end of the hot blast stove, a discharging box is connected to the front end of the hot blast stove, a drying heating roller is connected to the front end of the discharging box, and the drying heating roller is connected to one side of the bottom of a feeding smoke box. A tail gas air pipe is arranged at the top of the feeding smoke box and connected to a dust remover, and a pure air pipe is arranged on one section of the dust remover and connected to the bottom of the hot blast stove through a circulating fan. According to the utility model, flame is prevented from being in direct contact with the reworked material, asphalt aging is avoided, hot air and material flow are prevented from flowing reversely, the reworked material is flexibly heated, the heat exchange efficiency is high, hot air is recycled, the waste of energy is reduced, and the production cost is saved.

The invention discloses an instant cubilose preparation device and method based on low-temperature baking. The equipment comprises a soaking assembly, an electric heating rod, baking assemblies, a sucking pump and a dryer, the soaking assembly is provided with a rectangular groove, a steamer tray, a cover, a water inlet pipe and a water outlet pipe, multiple layers of baking assemblies are arranged in the rectangular groove, the sucking pump and the dryer are arranged on the cover, the dryer is connected with a main air inlet pipe of the baking assemblies, and the rectangular groove is provided with a liquid level sensor, a temperature sensor and a water pump. And ribs are arranged on the inner walls of the rectangular grooves. The preparation method comprises the following steps: soaking the raw cubilose in a steaming tray for 6 hours, draining water, injecting water, heating to generate steam, curing for 20 minutes, inputting 75 DEG C constant-temperature hot air through a dryer, forming a 0.2-0.5 m / s wind circulation environment through a baking assembly, and baking at low temperature for 36 hours. The method realizes process integration, accurate and controllable parameters, uniform cubilose dehydration, good nutrition retention, high quality and easy carrying, hot water can be directly brewed for eating, the equipment is easy to operate and clean, and the method is suitable for batch production.

The invention relates to the technical field of drying, and provides wire rod drying equipment which comprises a frame body. A plurality of independent drying channels; a wind power circulation driving device; the wind power circulation driving device comprises a suction opening and an air outlet, and the suction opening communicates with the area sections, close to the wire inlet, of the multiple drying channels. The heating device comprises a plurality of heating channels which are independently arranged and communicate with the air outlet, and a plurality of groups of heating assemblies which are used for independently heating air flow in the heating channels; and the other ends of the plurality of heating channels are respectively communicated with the area sections, close to the wire outlet, of the plurality of drying channels. The independently-arranged heating channels are matched with the independent heating assemblies, air flow in the heating channels can be independently heated, the air flow in the heating channels is correspondingly led into the drying channels, and therefore wires with different wire diameters can penetrate into the drying channels to meet the requirement for different drying temperatures of the wires with different wire diameters.

The utility model discloses a double-circulation air duct temperature and humidity uniformity tea cabinet which comprises a cabinet body, an inner container, a first air duct, a left closed air duct and a right closed air duct. The first air channel is located on the rear portion of the inner container, an air inlet hole of the first air channel is communicated with the lower portion of the inner container, an air outlet hole of the first air channel is communicated with the upper portion of the inner container, and a circulating fan is installed in the first air channel. The left closed air duct and the right closed air duct are located in the first air duct, the left closed air duct is located on the left half portion of the cabinet body, and the right closed air duct is located on the right half portion of the cabinet body. The left closed air duct is provided with a left air blower enabling air to circulate, and the right closed air duct is provided with a right air blower enabling air to circulate. Air circulation is carried out through three main independent airflow channels, namely the first air channel, the left closed air channel and the right closed air channel, so that the problem that various temperatures and humidity in the inner container of the high and wide cabinet body are not uniform and stable is solved. The structure is compact, and the space in the cabinet is saved. And manufacturing, assembling, disassembling, assembling and maintaining are convenient.

The present invention relates to an elevator cooling system of a lateral airflow circulation structure, which measures acceleration of a moving body, forms an intake lateral airflow which is an airflow of a path through which internal air inside a car flows into a first side wall duct in a direction toward a side wall portion of the car covered by the first side wall duct and then is suctioned into an air conditioning module through the first side wall duct, and forms a discharge lateral airflow which is an airflow of a path through which discharged air of the air conditioning module flows into a second side wall duct and then is discharged from a side wall portion of the car covered by the second side wall duct through the second side wall duct, whereby inconvenience of passengers due to cold wind is minimized while the entire interior of the elevator car can be quickly cooled.

1. The name of the design product: fireplace fan (29-31-32). 2. The use of the design product: for heat dissipation of fireplace, for blowing circulating air flow. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 2 perspective view. 5. Design 2 is designated as the basic design.

The invention provides a kiln head waste heat utilization system, and relates to the technical field of cement production, the kiln head waste heat utilization system comprises a rotary kiln, a grate cooler, a coal milling system and a waste heat boiler, the rotary kiln comprises a barrel, a kiln head combustor and a decomposing furnace, and the interior of the grate cooler is divided into a high-temperature section, a medium-temperature section and a low-temperature section; the kiln head waste heat utilization system further comprises a grate cooler air collecting box, a coal mill circulating air unit and a waste heat power generation air circulating unit; the kiln head waste heat utilization system cancels a coal mill waste gas discharge coal mill chimney; an outlet of the grate cooler air collecting box is connected with an inlet of a medium-temperature section of the grate cooler; the gas entering the coal mill system passes through the coal mill circulating air consumption unit and then enters the grate cooler air collecting box for recycling; the waste heat power generation air circulation unit at least comprises a first waste heat power generation air sub-circulation unit, and part of gas entering the waste heat boiler enters the grate cooler air collecting box through the first waste heat power generation air sub-circulation unit to be recycled. The effects of reducing air consumption, reducing waste gas emission and recovering waste heat of waste gas are achieved.

The invention discloses a hot air circulation molten plastic recycling granulator and a method thereof, and belongs to the technical field of granulators, the hot air circulation molten plastic recycling granulator comprises a steel belt conveying assembly, the steel belt conveying assembly comprises an adjustable driving assembly and a cooling assembly, and the adjustable driving assembly is connected with the cooling assembly; the driving end of the adjustable driving assembly is connected with a dripping assembly used for evenly discharging granules, and the discharging end of the dripping assembly is located above the input end of the adjustable driving assembly. The dripping assembly comprises a heat preservation assembly, a feeding assembly and a rotary discharging assembly. The feeding end of the feeding assembly is connected with a hot air circulation melting assembly. The hot air circulation melting assembly comprises a pressurizing assembly, a stirring assembly and a hot air circulation assembly. The top of the stirring assembly is connected with a sealed feeding assembly used for sealed feeding. In this way, after waste plastic enters the inner cylinder through the sealed feeding assembly, the sealed feeding assembly is used for blocking, hot air in the tank body is prevented from being discharged, heat loss is avoided, and energy conservation and consumption reduction are achieved.

The invention relates to an air conditioner fresh air system with switchable heating and refrigerating double-loop modes, an air circulation system and a cold circulation system, the air circulation system comprises a fresh air system and an exhaust system, and a lower air pipeline, an air circulation four-way valve, an air return pipeline and an exhaust pipeline communicate in sequence; a fresh air inlet pipeline, a fresh air supply pipeline, an air circulation four-way valve and an upper air pipeline are sequentially communicated, and a refrigerating mode of lower suction and upper blowing is started; an upper air pipeline, an air circulation four-way valve, an air return pipeline and an exhaust pipeline are sequentially communicated, a fresh air inlet pipeline, a fresh air supply pipeline, the air circulation four-way valve and a lower air pipeline are sequentially communicated, an upper-suction and lower-blowing heating mode is started, and the phenomenon of vertical temperature stratification caused by direct sinking of cold air during traditional refrigeration is effectively broken through convection; cold air is prevented from being excessively gathered at the head of the human body, the temperature difference between the head and the foot area is remarkably reduced, meanwhile, through circulation treatment of air sucked from the bottom, cold waste is further reduced, and the refrigeration efficiency is improved.

This invention relates to the field of fluidized bed burner technology and discloses a biomass fuel energy-saving burner based on fluidized bed technology, including a wind circulation assembly. The wind circulation assembly includes a sealed outer shell, an air supply assembly fixedly connected to the inner side of the bottom of the sealed outer shell, a fuel tank fixedly sleeved on the inner side of one end of the sealed outer shell, a guide plate fixedly connected to the top of the front of the fuel tank, a fluidization assembly fixedly installed on the inner side of the bottom of the fuel tank, a combustion chamber assembly fixedly sleeved on one end of the sealed outer shell, and an ash removal assembly fixedly connected to one side of the combustion chamber assembly. The fluidization assembly fluidizes the fuel in the fuel tank, and the air supply assembly, under the action of the sealed outer shell and the guide plate, forms a wind circulation to discharge coke and promote combustion. This solves the problem that the coke produced by fuel combustion is often mixed with the fuel itself, resulting in incomplete combustion and low combustion efficiency.

The utility model relates to a loosening and moisture regaining device. The loosening and moisture regaining device comprises a barrel, a hot air circulation mechanism and a moisture removing mechanism, the barrel is provided with a containing cavity, the feeding end of the barrel is provided with a first input port and a feeding port, and the discharging end of the barrel is provided with a first output port and a discharging port. The hot air circulation mechanism comprises a heating and humidifying assembly, a hot air circulation pipeline and a first air supply assembly, one end of the hot air circulation pipeline is connected with the first input port through the heating and humidifying assembly, the other end of the hot air circulation pipeline is connected with the first output port, and the first air supply assembly is installed on the hot air circulation pipeline. The moisture removal mechanism comprises a first moisture removal pipe, a second moisture removal pipe, a second air supply assembly and an exhaust pipe. The second air supply assembly conducts moisture removal and dust removal on the feeding port and the discharging port through the first moisture removal pipe and the second moisture removal pipe. The loosening and moisture regaining device has the advantages of being good in production quality and high in efficiency.

The utility model discloses a double-host side air supply opposite blowing drying room which comprises a drying room body, two air supply chambers and two drying chambers are formed in the drying room body through a transverse partition plate and a vertical partition plate, the air supply chambers and the drying chambers are alternately arranged in a ring shape and are sequentially communicated, and heating equipment communicated with the air inlet ends of the air supply chambers is arranged in the air supply chambers. According to the drying room, the structure of the two drying chambers is adopted, hot air circulation is formed in an opposite blowing mode, particularly, a heat pump is directly installed at the air outlet end of each drying chamber, circulating air about to enter the drying chambers can be comprehensively and fully heated, heating omission is avoided, real effective inner circulation is formed, and the drying efficiency is improved. And heat energy utilization rate is high and energy consumption is low.

The utility model discloses an efficient purification air circulation structure of an air handling unit, which relates to the technical field of air purification of the air handling unit and comprises a circulation pipe, a mounting groove is arranged in the middle of the circulation pipe, a filtering mechanism is movably mounted in the mounting groove, and a covering mechanism is arranged on the outer side of the mounting groove. According to the device, the anti-blocking mechanism is arranged to be matched with the collecting mechanism, when the filter screen of the circulating pipe needs to be cleaned, a driving motor is started to drive a rotating shaft, a worm, a worm gear and a rotating disc to rotate, a brush plate is driven to be attached to the filter screen to do annular displacement, efficient brushing and cleaning are achieved, and dust and impurities fall to the collecting frame through a guide frame and are received by a collecting drawer below; and if the brush plate needs to be replaced, the mounting screw rod is twisted to remove the mounting block, and the design ensures efficient operation of the equipment, is convenient to disassemble, assemble and maintain, and is high in practicability.

According to the air circulation system of the sludge centrifugal dewatering machine workshop, the air supply pipe and the exhaust pipe on the two layers of the workshop are arranged at the two ends of the centrifugal machine respectively, good air flow is formed, the exhaust pipe is located at the end, where odor is most serious, of the centrifugal machine, and therefore the odor around the centrifugal machine is effectively taken away. Meanwhile, the gas collecting hood is additionally arranged to form a closed cavity around the centrifugal machine, and the closed cavity is connected to the exhaust pipe through the first pipeline, so that the deodorization efficiency is further improved. In addition, a sludge buffer bin on the first layer of the workshop is also designed in a sealed mode, and the positions of an exhaust pipe and an air supply pipe are reasonably arranged to form air supply circulation. According to the air circulation system, targeted odor collection is conducted on all areas which possibly generate odor, the exhaust pipes and the air supply pipes are rearranged in the open areas in the workshop, an effective circulation air duct is formed in the workshop, and the problems that the internal environment of the workshop is poor, odor gas cannot be effectively collected, and the internal safety of the workshop is low are solved.

The invention discloses an intelligent steaming and baking oven, and relates to the technical field of commercial kitchen ware equipment, the intelligent steaming and baking oven comprises a box body, a glass door, a control panel, a bottom decoration coaming, a cold air filter box, a water spraying gun, an exhaust port and an air inlet, the box body is internally provided with an inner container, a boiler, a moisture exhaust valve, a fan, an electrical element, a cooling fan, a water inlet valve assembly and a boiler drainage pump; the liner is provided with an air duct baffle, a centrifugal wind wheel and an electric heating element, and the air duct baffle is matched with the liner in shape to form a hot air circulation channel; the inner container is an area for cooking food, the boiler is used for generating steam needed by a steaming mode, the steam enters the inner container through a pipeline on the upper portion of the boiler, the moisture exhaust valve is opened to exhaust moisture in the inner container, the cooling fan conducts heat dissipation on electrical elements, and the boiler drainage pump is controlled to exhaust water in the boiler according to a program. The electric heating element generates heat.

This invention discloses an air-cooled fuel cell cabin and its opening method. The cabin includes a cabin body, a hydrogen storage module, an air-cooled fuel cell system, a cooling fan, an energy storage module, and a ventilation device. During the low-temperature startup of the air-cooled fuel cell cabin, the ventilation device is controlled to be open, so that the gas from the outlet of the cooling fan flows through the ventilation device to the energy storage module and back to the inlet of the air-cooled fuel cell system, thereby raising the temperature of the air-cooled fuel cell system to the target temperature. This invention can effectively improve the low-temperature startup efficiency of the air-cooled fuel cell by utilizing hot air circulation during the low-temperature startup process.

The utility model discloses a multilayer semiconductor device high and low temperature test air duct comprising a test assembly, the test assembly is composed of a box body, an air guide arc, a heater, a first fan, an air baffle, a second fan, an air outlet pore plate, a multilayer sample rack, a sample to be processed, an air suction pore plate and an evaporator, the box body is fixedly connected with the air guide arc, and the air guide arc is fixedly connected with the heater. Heaters are symmetrically and fixedly connected to the air guide arc, first fans are fixedly connected to the heaters, and the first fans are fixedly connected to the air partition plate; according to the utility model, by using the test assembly, a sample can be electrified for testing, the temperature uniformity is ensured, an air channel is divided into two paths of air circulation, each path of air is ensured to be uniformly distributed, and a plurality of layers of sample racks are adopted in the box, so that a large batch of samples can be tested with loads, and the working efficiency is high; by using the observation assembly, a user can observe the internal condition of the box body, the observation definition is guaranteed, and the use experience of the user is improved.