2562 results about "Air cycle" patented technology

The invention relates to the technical field of temperature regulation and control, in particular to an intelligent temperature regulation and control method and system based on an intelligent building. The method comprises the following steps: performing functional area air flow simulation on intelligent building structure design data to obtain functional area air conditioning flow simulation data; performing air circulation regulation of different functional areas on the functional area air regulation flow simulation data to obtain temperature coupling air circulation regulation data; indoor temperature circulation adjustment compensation is conducted on the temperature coupling air circulation adjustment data according to the human flow real-time monitoring data, and indoor temperature circulation adjustment compensation data are obtained; performing regulation and control logic training optimization on the indoor temperature circulation regulation and compensation data to obtain temperature regulation and control logic optimization data; and performing automatic firmware design based on the temperature regulation and control logic optimization data to obtain temperature regulation and control logic firmware. According to the invention, the temperature regulation and control technology is optimized, so that the temperature regulation and control technology is more perfect.

The invention relates to an existing cavern compressed air energy storage physical model test system, which comprises a physical model, a hydraulic loading system, an air circulation charging and discharging system and a monitoring system, and is characterized in that the physical model comprises a surrounding rock and an air storage part, the surrounding rock comprises an external rock block and an internal rock block, the internal rock block is provided with a hole, and the hole penetrates through the internal rock block along the axial direction of the internal rock block; one or more prefabricated cracks are formed in the wall of the hole, the outer rock block is arranged on the outer side of the inner rock block in a surrounding mode, at least part of the air storage part is arranged on the two sides of the inner rock block in the axial direction, and the air storage part can seal the hole; the hydraulic loading system can apply a load from an external rock block to an internal rock block to the physical model, and the air circulation inflation and deflation system can inflate and deflate the hole; the monitoring system comprises a monitoring instrument and a data acquisition system, the monitoring instrument can perform data monitoring on the physical model, and the data acquisition system is in data connection with the monitoring instrument and can perform data transmission and processing.

The invention relates to the technical field of aircraft heat dissipation, in particular to an airborne hybrid refrigeration system, an aircraft and a control method. The airborne hybrid refrigeration system comprises a power assembly, a motor assembly, an air circulation assembly and a liquid cooling circulation assembly. The motor, the gas compressor and the gas turbine are coaxially connected. The air circulation assembly includes a cooling turbine, a first heat exchanger, and a first water separator. The gas compressor, the cooling turbine and the first water segregator are sequentially communicated to form a gas supply path. An outlet of the cooling turbine communicates with an inlet of the first heat exchanger to form a refrigeration air path. In the liquid cooling circulation assembly, the liquid cooling pump, the heat load heat exchanger, the first isolation pipeline and the second isolation pipeline are communicated to form a liquid cooling loop. The evaporator and the first isolation pipeline are connected in parallel, and the first heat exchanger and the second isolation pipeline are connected in parallel. The aircraft comprises the airborne hybrid refrigeration system, and the control method is applied to the aircraft, so that the problems of design redundancy and high energy consumption of the airborne hybrid refrigeration system are solved.

The invention relates to the technical field of drying equipment, in particular to a low-consumption constant-temperature dehumidification device and a control method, and achieves an efficient and energy-saving constant-temperature dehumidification effect. The heat recovery module recovers heat in the condensation and regeneration process, the collaborative optimization module coordinates operation of all the modules, the energy utilization efficiency is remarkably improved, and energy consumption is reduced. The control system module dynamically adjusts the state of each module according to the real-time data of the temperature and humidity sensor, ensures the stability of the environment temperature and humidity, and further improves the control precision by adopting a dynamic decoupling control strategy. The regeneration module utilizes recovered heat energy to efficiently regenerate adsorbents and cooperates with novel composite adsorbents, the service life of the adsorbents is prolonged, and the dehumidification performance is improved. The air circulation module forms uniform airflow, and local temperature and humidity unevenness is avoided. A user can set parameters through the interaction unit, the system is controlled to automatically adjust the operation strategy, intelligent operation is achieved, and the system performance is optimized.

A clothes dryer using an LED light source is proposed. Instead of using a heater, a blowing fan, and a heat exchanger, the clothes dryer employs a plurality of LED light source modules provided in a body and efficiently arranged therein and an air circulation structure of an air circulation part having a blowing fan arranged in the inner rear side thereof, and is configured to sterilize air through an air sterilization part, absorb and dry moisture by a ceramic filter, and then finally discharge the air to the outside through an exhaust fan. Therefore, without requiring a separate water discharge treatment process in an existing method, the clothes dryer can achieve efficient drying of clothes and drying of clothes without damage.

A temperature-rainfall-reservoir water combined testing system for a permafrost landslide model includes a tempered glass case with a permafrost landslide model and reservoir water provided therein; a temperature control system provided on the tempered glass case and including an incubator temperature control module, a landslide mass rear edge water tank temperature control module and an air circulation temperature control module; a seepage control system configured to realize seepage of the permafrost landslide model, and form the reservoir water in front of a landslide mass; a rainfall control system including a water tube, a flow controller and a nozzle, where the nozzle is provided in the tempered glass case, and located above the permafrost landslide model; and a multi-field monitoring system including a temperature sensor, a pore water pressure gauge, a moisture meter and a grating strain gauge that are provided in the permafrost landslide model.

The utility model discloses an energy-saving differential pressure ripening warehouse for fruits. The energy-saving differential pressure ripening warehouse comprises a differential pressure circulating system, a refrigeration compression system and a ventilation system, the differential pressure circulation system comprises an air duct cavity, a vertical air guide duct and an axial flow fan, the air guide duct is communicated with the air duct cavity, an air outlet of the axial flow fan faces upwards and is located in the air duct cavity, the air outlet of the axial flow fan is correspondingly provided with a heat exchanger, and the refrigeration compression system can convey different heat exchange media to the heat exchanger according to the temperature adjusting requirement. By means of the differential pressure circulation system, air circulation in the warehouse body can be uniform and regular, gas circulation components, ethylene and temperature distribution of the ethylene are more uniform, the situation that the maturity of fruits is not uniform due to the fact that the temperature or the ethylene concentration is not uniform can be avoided, and the device is suitable for large-scale ripening of the fruits; and the medium introduced into the heat exchange coil pipe is switched according to requirements through the compression refrigeration system, and more energy conservation and consumption reduction are achieved especially for the temperature rise of the warehouse.

The invention relates to the technical field of semiconductor refrigerators, and discloses a vehicle-mounted semiconductor refrigerator which comprises a shell and a drawer box, and the shell comprises an inner shell and an outer shell; a semiconductor refrigeration assembly and a central control assembly are installed on the shell, a lower air duct and a rear air duct are arranged on the shell, the lower air duct communicates with the rear air duct, and an air outlet is formed in the upper portion of the front side of the shell and communicates with the rear air duct; a return air inlet is formed in the lower part of the rear side and communicated with the lower air duct; an inner fan is installed at the air return opening of the shell, and a plurality of air circulation holes are formed in the two sides of the storage drawer. The return air inlet is formed in the lower portion of the rear side of the refrigerator, the air outlet is formed in the upper portion of the front side of the refrigerator, and meanwhile the air circulation holes are formed in the two sides of the storage drawer, so that the problems of uneven refrigeration temperature, low temperature at the air inlet and high temperature away from the air inlet in an existing design in the market are solved, and the effects of higher cooling rate and higher cooling efficiency are achieved. And the cooling effect in the refrigerator is more uniform.

The invention provides a sulfide solid electrolyte air stability detection system, which comprises a sulfide detection module, an air circulation module, a dew point and temperature control module, a detection bin, an air brake device and a data processing module, the air circulation module, the dew point and temperature control module and the air brake device are respectively connected with the detection bin; the data processing module is arranged at the bottom of the detection bin; the sulfide detection module is arranged on the inner wall of the detection bin. The system can detect the air stability of the sulfide solid electrolyte under air circulation while ensuring that the dew point and the temperature are stable, so that the accuracy and the detection efficiency are improved.

Disclosed is a laundry treating apparatus including a cabinet, a drum, a fluid circulator, an air circulator including a humidity sensor, a driver, and a controller, wherein a drying operation includes an efficiency increasing process for increasing drying efficiency inside the drum, an efficiency maintaining process for maintaining the drying efficiency, and an efficiency decreasing process for reducing the drying efficiency, wherein the controller performs the drying operation while distinguishing the efficiency increasing process, the efficiency maintaining process, and the efficiency decreasing process from each other using a measured value of the humidity sensor.

The present invention relates to a liquid metal bearing dynamic balance correction system and method applied to the field of CT tube technology. The dynamic balance correction system comprises an air circulation system, a liquid metal bearing system, and a test sensor system. The air circulation system comprises a sealed outer cover, an exhaust fan is arranged on the outer wall of the sealed outer cover, one end of the exhaust fan is connected to a gas circulation channel, and the end of the gas circulation channel away from the exhaust fan is connected to the inside of the sealed outer cover. The dynamic balance correction system of the present invention can effectively avoid the problem that the liquid metal in the bearing reacts with oxygen in the atmosphere, causing the viscosity of the liquid metal to change, and then causing the bearing performance to decrease when performing dynamic balance correction on the liquid metal bearing. The dynamic balance correction system can not only perform dynamic balance correction on the rotor, but also perform dynamic balance correction on the final product structure of the rotor and the stator, thereby greatly improving the accuracy and effect of the dynamic balance correction.

The present invention provides a vacuum air extraction device with high practicality and reliability. The vacuum air extraction device with high practicality and reliability includes an air extraction host machine and a vacuum sucker in matching connection to a lower part of the air extraction host machine, where a control circuit board, a vacuum air pump and a decompression valve are arranged in the air extraction host machine; an annular groove body is formed in one end connected to the air extraction host machine, of the vacuum sucker; a spongy body for filtering air is arranged in the annular groove body; air extracted through the air extraction host machine passes through the air circulation channel to enter the annular groove body, is filtered at the spongy body, and then flows into the vacuum air pump.

The invention relates to the technical field of dry type transformers, in particular to a dry type transformer which comprises a transformer body, the transformer body comprises a high-voltage coil and a low-voltage coil, the high-voltage coil is connected to the outer side of the low-voltage coil in a sleeving mode, a gap is reserved between the high-voltage coil and the low-voltage coil, and a plurality of vertically-through air channels are formed in the high-voltage coil and the low-voltage coil. Air guide pieces are arranged on the upper sides and the lower sides of the high-voltage coil and the low-voltage coil, and air ports of the air guide pieces are matched with air channel openings of the high-voltage coil and the low-voltage coil and gaps between the high-voltage coil and the low-voltage coil. According to the dry-type transformer, air circulation heat dissipation and water circulation cooling are combined through the integrated air channel, the heat dissipation calandria, the circulating fan and the water pumping device, the heat dissipation efficiency of the dry-type transformer is improved, the dry-type transformer can keep good heat dissipation performance in a closed or limited space, meanwhile, through the designed transmission mechanism, the heat dissipation efficiency of the dry-type transformer is improved, and the heat dissipation efficiency of the dry-type transformer is improved. Vibration energy generated when the transformer body works is converted into driving force of the water pumping device, and recycling of the vibration energy is achieved.

The drawer type full-automatic pastry fermentation production line comprises a fermentation room and a control cabinet, a containing cavity is formed in the fermentation room, a hot air circulating system and a humidifying system are arranged in the containing cavity, an opening communicated with the containing cavity is formed in one side of the fermentation room, and the opening is communicated with the control cabinet. The fermentation room is detachably connected with a storage frame through the opening, the storage frame is connected with an installation sealing plate which is used for being matched with the opening and sealing the containing cavity, the storage frame is connected with a bracket capable of sliding in a drawing mode through a sliding channel, and the installation sealing plate is provided with a sliding groove inlet; a bracket is arranged in the fermentation room, one end of the bracket penetrates through an inlet of the sliding groove and can be opened or closed in a sliding mode along the sliding channel, a sealing piece is connected to the bracket, and a mechanical arm used for feeding, a supplied material conveying belt used for conveying pastries and a discharging conveying belt are arranged outside the fermentation room. And the process requirements of different fermentation time of various products can be met.

The utility model relates to the technical field of air conditioning, in particular to a fresh air module and an air conditioner with the fresh air module, and aims to solve the problem that in the prior art, a fresh air module of a fresh air ventilator or an air conditioner is single in function. In order to achieve the purpose, the fresh air module comprises a shell and a fan arranged in the shell, a fresh air inlet and a fresh air outlet are formed in the shell, the fresh air inlet is communicated with the outdoor space, the fresh air outlet is communicated with the indoor space, and an air return opening is further formed in the shell and communicated with the indoor space. The return air inlet and the fresh air inlet are formed in the air inlet side of the fan, and the fresh air outlet is formed in the air outlet side of the fan. Through the arrangement of the return air inlet, the fresh air module has the fresh air function and the air circulation function, the requirement of people for fresh air can be met, the comfort level can be improved, and the user experience is effectively improved.

The embodiment provides a ventilation structure of a drying machine and the drying machine. The ventilation structure of the drying machine comprises a case; the inner chamber is arranged in the case; the air supply assembly is arranged in the case, the air supply end of the air supply assembly faces the inner cavity, and the air supply assembly conveys hot air to the inner cavity; the cabinet door is arranged in the case and is used for controlling the opening or closing of the inner cavity; when the inner cavity is in a closed state, an exhaust gap exists between the inner cavity and the cabinet door, and hot air conveyed to the inner cavity by the air supply assembly is exhausted out of the drying machine from the exhaust gap. An air circulation channel formed by the ventilation structure penetrates through the whole inner cavity, the drying effect can be improved, meanwhile, the ventilation structure of the drying machine does not need to be additionally provided with ventilation holes in the inner cavity, and therefore design work of the drying machine is reduced, and production efficiency of the drying machine is improved.

The invention relates to the technical field of annealing furnaces, in particular to an annealing furnace heating system which comprises a furnace body, an air blower arranged at the top of the furnace body and used for exhausting and sucking air and a heating bin used for heating air in the furnace body. The top of the furnace body is further provided with an air compression mechanism used for making air in the furnace body circularly flow, the air compression mechanism communicates with the interior of the heating bin through a pipeline, the bottom in the heating bin is connected with an air outlet pipe, and the end, away from the heating bin, of the air outlet pipe is connected to the top end in the heating bin. And the compression pipe is connected with a plurality of air inlet pipes which are transversely arranged side by side at the bottom of the furnace body, and the other end of the compression pipe communicates with the input end of the air compression mechanism. The heating system of the annealing furnace is improved, so that hot air in the annealing furnace is uniformly distributed, a workpiece is uniformly annealed, and the physical performance of the annealed workpiece is improved.

Introduced here are pressure-mitigation systems able to mitigate the pressure applied to a human body by the surface of an object (also referred to as a “structure”). A controller device (or simply “controller”) can be fluidically coupled to a pressure-mitigation device that includes a series of selectively inflatable chambers. When a pressure-mitigation device is placed between a human body and a surface, the controller can continuously, intelligently, and autonomously circulate fluid through the chambers of the pressure-mitigation device. Normally, the controller circulates air through the chambers of the pressure-mitigation device, though the controller could circulate another fluid, such as water or gel, through the chambers of the pressure-mitigation device. The controller may cause the chambers to be selectively inflated, deflated, or any combination thereof.

The utility model relates to the technical field of medical instruments, in particular to a ventilation device for protective clothing. The utility model provides a ventilation device for protective clothing, which can realize circulation and alternate use of internal and external air, reduce the working pressure of a filter tip and prolong the service life of the filter tip. A ventilation device for protective clothing comprises a bonding plate, a dehumidifier, a switching valve, a filter tip and an internal circulation assembly, the dehumidifier is connected to the bonding plate, the switching valve is connected to the left side of the middle of the dehumidifier, the filter tip is clamped to the front side of the middle of the dehumidifier, an exhaust hole is formed in the rear side of the middle of the dehumidifier, and the internal circulation assembly is connected to the dehumidifier. According to the utility model, switching is carried out by controlling the switching valve, damp air in the protective clothing is dehumidified and cooled through the dehumidifier, and treated dry air is conveyed back into the protective clothing through the internal circulation air pipe and the connector, so that internal and external air can be circularly and alternately used, the working pressure of the filter tip is reduced, and the service life of the filter tip is prolonged.

The utility model relates to an existing cavern compressed air energy storage physical model test system, which comprises a physical model, a hydraulic loading system, an air circulation charging and discharging system and a monitoring system, and is characterized in that the physical model comprises a surrounding rock and an air storage part, the surrounding rock comprises an external rock block and an internal rock block, the internal rock block is provided with a hole, and the hole penetrates through the internal rock block along the axial direction of the internal rock block; one or more prefabricated cracks are formed in the wall of the hole, the outer rock block is arranged on the outer side of the inner rock block in a surrounding mode, at least part of the air storage part is arranged on the two sides of the inner rock block in the axial direction, and the air storage part can seal the hole; the hydraulic loading system can apply a load from an external rock block to an internal rock block to the physical model, and the air circulation inflation and deflation system can inflate and deflate the hole; the monitoring system comprises a monitoring instrument and a data acquisition system, the monitoring instrument can perform data monitoring on the physical model, and the data acquisition system is in data connection with the monitoring instrument and can perform data transmission and processing.

A system for delivering inactivated pathogens to an enclosure includes an air delivery system, the air delivery system comprising: (a) an air intake; (b) an air conditioning unit; (c) an air mover; (d) a UVC disinfection unit; (e) an enclosure; (f) an enclosure air entry vent; (g) an enclosure air discharge vent; and (h) an air circulation pathway going from the air intake through an air duct connected at one end to the air intake and at a second end to the enclosure air entry vent that opens into the enclosure, wherein the air duct provides a passageway through the air delivery system. A pathogen loading inlet is connected to the air circulation pathway. The enclosure is a room, a nursing home, an airplane, a train, a ship, or a critical care unit in a hospital. The enclosure can also be a free-standing and / or mobile unit.

The invention relates to a cold region tunnel energy-saving heat-preservation anti-freezing system and a control method, the cold region tunnel energy-saving heat-preservation anti-freezing system comprises an energy storage heating module, a temperature monitoring module, an air circulation module, a drainage anti-freezing module, a lining and an off-wall heat-preservation layer, the lining and the off-wall heat-preservation layer form an air heat-preservation cavity, and the air heat-preservation cavity communicates with the energy storage heating module; the energy storage heating module is used for generating and storing heat and providing a heat source for air in the air heat preservation cavity and the air circulation module, and the temperature monitoring module is used for collecting and analyzing the temperature of air in the air heat preservation cavity and the temperature of air in the air circulation module and the inner wall of the air heat preservation cavity. According to the embodiment of the invention, a stable heat preservation and anti-freezing effect can be provided in a negative temperature environment for a long time, the operation cost is low, safety and reliability are realized, the problems of high energy consumption, potential safety hazards and the like in the prior art are solved, the applicability is wide, and the practicability is high. And the method has good practical value and economic benefit.

The invention discloses an electronic industry clean workshop air circulation function self-adaptive adjusting system and method. The adjusting system comprises a three-dimensional grid monitoring module, a data processing module, a visualization module, a computer vision module, an intelligent decision module and an air circulation control module. The adjusting method comprises the steps of three-dimensional grid sensing arrangement and monitoring, data processing, data visualization, image feature extraction, abnormal area early warning, air circulation parameter decision making, self-adaptive adjusting execution and closed-loop feedback optimization. A continuous space distribution model is constructed through real-time monitoring data of a three-dimensional grid sensor and is converted into a dynamic visual three-dimensional heat map, correlation between environment characteristics and air circulation control quantity is further established, and air flow control parameters are output based on local pollution abnormal conditions. The adjusting accuracy of the system on complex working conditions can be remarkably improved, and self-adaptive adjustment and sustainable evolution of the air circulation function are achieved.

The invention relates to the technical field of servers, and discloses a combined server convenient for computing power distribution, which comprises a cabinet, one side of the cabinet is connected with a split door assembly, and a folding partition plate assembly is mounted in the cabinet. According to the combined server convenient for computing power distribution, an innovative structure that the partition plates for placing the server are not fixedly mounted in the cabinet is realized, the multiple groups of partition plates can perform inclined stretching action by virtue of linkage matching of the hinged frame bodies, and compared with a vertical stacking mode in the prior art, the combined server convenient for computing power distribution has the advantages of simple structure and convenience in operation. According to the placement rack capable of being obliquely stretched, the internal heat dissipation efficiency of a cabinet is remarkably optimized, the vertical distance between two adjacent sets of servers is increased through the stretched placement rack, a traditional vertical alignment structure is broken through staggered layout, a three-dimensional channel facilitating air circulation of heat dissipation equipment is formed, the heat dissipation rate is increased, and meanwhile, the heat dissipation efficiency is improved. And the stretched folding partition plate assembly cannot shield the overhaul sight, so that maintenance personnel can conveniently and quickly inspect the equipment.

A laundry treating apparatus includes a cabinet, a drum, a fluid circulator, an air circulator including a humidity sensor, a driver, and a controller, where a drying operation includes an efficiency increasing process for increasing drying efficiency inside the drum, an efficiency maintaining process for maintaining the drying efficiency, and an efficiency decreasing process for reducing the drying efficiency, where the controller performs the drying operation while distinguishing the efficiency increasing process, the efficiency maintaining process, and the efficiency decreasing process from each other using a measured value of the humidity sensor.

The invention discloses an ecological cabin airflow regulation control device and method, and belongs to the field of ecological cabin airflow regulation. An air flow adjusting and controlling device of an ecological cabin comprises a cabin wall, and further comprises a circulating unit arranged on the cabin wall and used for exchanging air inside and outside the cabin; the filtering mechanism and the second filtering plate are arranged in the circulating unit and used for blocking impurities in air during exchange, a driving mechanism and a first cleaning mechanism are arranged in the circulating unit, and the driving mechanism can drive the first cleaning mechanism to reciprocate along the filtering mechanism; a flow guide mechanism communicated with the first cleaning mechanism is arranged on one side, close to the filtering unit, of the cabin wall; according to the invention, the problems of non-uniform air distribution, high working intensity of the air filtering assembly, unstable air circulation speed and poor air quality when the ecological cabin is used for adjusting and controlling the air flow can be solved.

The invention discloses a start control system and control method for an air-cooled static frequency converter of a pumped storage unit, and the system achieves the precise control of multiple parameters in the starting process of the pumped storage unit through the combined use of the static frequency converter, a cooling fan, a control unit and a control module. The input end of the static frequency converter is connected with a power system and directly acts on a stator winding of the synchronous motor through the output end, stator current and exciting current of the motor are controlled in a low-frequency pulse mode, and stable starting is ensured. The cooling fan is connected with a main loop assembly of the SFC, the temperature is effectively controlled through an air circulation cooling system, and the system is prevented from being overheated. The control unit coordinates all devices in the whole starting and stopping process, and the synchronous motor is smoothly switched to normal synchronous operation from a low-frequency pulse starting mode.

The invention belongs to the technical field of power equipment, and particularly relates to a power distribution box with a dustproof function, which comprises a box body, a dust removal and heat dissipation mechanism, a protection mechanism, an auxiliary mechanism and a monitoring mechanism, and is characterized in that the dust removal and heat dissipation mechanism is arranged in the box body, the protection mechanism is arranged on the box body, and the auxiliary mechanism is arranged on the side wall of the box body; and the monitoring mechanism is arranged on the inner wall of the box body. The automatic heat dissipation mechanism drives a heat dissipation sliding block to slide through a heat dissipation servo motor, a control switch is triggered to switch the working state of the power servo motor, cold and hot air circulation is achieved, and the problem that natural wind is low in heat dissipation efficiency is efficiently solved; according to the bidirectional dust removal mechanism, a heat dissipation sliding block slides to drive a filter screen to ascend and descend, the air inlet side conducts filtering, the air outlet side conducts dust removal without blocking, the filter screen can be automatically cleaned when moving, dust accumulation and filter screen blocking are effectively avoided, the auxiliary mechanism achieves remote operation on control equipment in a sealed environment through a servo motor and a hydraulic press, and external dust is prevented from invading.

The present invention belongs to the technical field of antenna base station testing. Provided is an antenna base station aging test chamber, comprising: a chamber body, wherein a test cavity is provided inside the chamber body, and the chamber body is provided with an opening that matches the test cavity; and an air circulation system and a temperature control system are provided on the outside of the chamber body. The air circulation system comprises air output holes, air intake holes and a circulating air duct, wherein the air output holes and the air intake holes are provided on the chamber body and are in communication with the test cavity; the circulating air duct is arranged on the outside of the chamber body and is in communication with the air output holes and the air intake holes; and a first fan is provided in the circulating air duct. The temperature control system comprises an air suction hole, an air blowing hole and plugging devices, wherein the air suction hole and the air blow hole are provided on the circulating air duct; three plugging devices are provided, two of which are respectively arranged in the air suction hole and the air blowing hole, and the other one is arranged in the circulating air duct and is located between the air suction hole and the air blowing hole; and a second fan is provided on the air blowing hole. The present invention has a high utilization rate of space, is capable of testing more base stations simultaneously, and facilitates the handling of base stations.

The utility model relates to the technical field of tea processing equipment, in particular to a tea drying device capable of recovering heat. Comprising a drying box body, the drying box body is provided with a box door, an exhaust fan is arranged at the top of the drying box body, the output end of the exhaust fan is fixedly connected with a circulating air pipe, an air heater is fixedly installed on the inner wall of one side of the drying box body, and the air heater is provided with an air outlet in the drying box body. A dust filter screen is arranged at the end, away from the hot-air blower, of the air outlet, the end, away from the output end of the exhaust fan, of the circulating air pipe is fixedly connected with an air drying assembly, and the output end of the air drying assembly is fixedly connected with the hot-air blower. The technical problem that heat circulation is slow is solved, and the technical effect that hot air circulation is faster is achieved.