1190 results about "Air change" patented technology

The invention discloses a clean workshop production environment quality control method and system, and relates to the technical field of environment control, and the method comprises the steps: constructing a multi-layer sensing network, deploying temperature and humidity, particle concentration, pressure difference and VOC gas sensors, and carrying out the preprocessing data of each node through edge calculation; fusing the data based on a dynamic weight distribution algorithm, adjusting the weight according to the confidence score, and generating an environment quality comprehensive index; an LSTM pollution diffusion prediction model is established, a diffusion path is calculated in combination with airflow field simulation when pollution suddenly occurs, and an emergency response partition strategy is generated; fresh air system control parameters are optimized through reinforcement learning, a dynamic ventilation frequency adjusting model is established based on a real-time environment quality index and historical energy consumption data, and energy consumption is minimized through a Q-learning algorithm on the premise that cleanliness is guaranteed; a double-threshold early warning mechanism is set, local supercharging purification is started when a comprehensive index exceeds a first-level threshold, a second-level threshold is linked with adjacent areas to form a dynamic isolation barrier, and an intervention scheme effect is simulated through a digital twin system.

The invention provides an electric pressure cooker. The electric pressure cooker comprises a cooker body and a cooker cover detachably arranged on the top of the cooker body. An air cavity is formed in the cooker cover, and an exhaust valve communicated with the cooker body is mounted in the air cavity; a first air hole for exhausting air is formed in the top of the air cavity; a second air hole and a third air hole are formed in the bottom of the air cavity; the pot body is provided with a second air channel and a third air channel, the air outlet end of the second air channel is located in the middle of the pot body, and the air outlet end of the third air channel is located at the bottom of the pot body; an air exchange mechanism and an air release mechanism are mounted at the air cavity; the ventilation mechanism changes the unblocking and blocking states of the air holes through adjustment, and only outward exhaust is achieved; the gas release mechanism can open the gas release valve through adjustment, so that high-pressure gas in the pot body is discharged; the exhaust direction of high-pressure air leakage can be adjusted and changed, different use environments are met, and the applicability is improved.

The invention belongs to the technical field of curtain wall structures, and discloses a composite curtain wall structure suitable for a zero-carbon building, which comprises an inner side curtain wall and an outer side curtain wall. The inner side curtain wall is arranged on the building body and provided with a ventilation opening, an opening fan is arranged at the ventilation opening and can open or close the ventilation opening, the outer side curtain wall is connected to the inner side curtain wall, a ventilation cavity is formed between the outer side curtain wall and the inner side curtain wall, when the opening fan is opened, the ventilation cavity is communicated with the indoor space through the ventilation opening, and the outer side curtain wall is provided with an air inlet and an air outlet. The air inlet and the air outlet are both configured to be selectively opened or closed, and the ventilation cavity can communicate with the outside through the air inlet and the air outlet. By means of the arrangement, the composite curtain wall structure suitable for the zero-carbon building can flexibly adjust the ventilation mode, and energy consumption and carbon emission of the building can be reduced.

The utility model particularly relates to an automatic air interchanger for an indoor suite door of a passive building. The automatic air interchanger solves the problem that people having a rest are lack of oxygen or dizzy and lack of strength due to the fact that the concentration of indoor CO2 and PM2.5 cannot be detected in time during night rest of an existing passive building. A lock is arranged on the suite door, an outer ventilation opening is formed in an outer side plate at the top of the door pocket line, an inner ventilation opening located on the inner side of the suite door is formed in a top plate of the door pocket line, an air duct communicated with the outer ventilation opening and the inner ventilation opening is arranged between the outer ventilation opening and the inner ventilation opening, and a power transmission mechanism and a rotary ventilation mechanism are arranged in the door pocket line. Automatic ventilation of the public area and the indoor room is achieved, the CO2 concentration and the PM2.5 concentration in the room are equivalent to those in the public area, the CO2 and PM2.5 concentration detecting instrument installed in the public area can detect the concentration of harmful gas in the closed room in time, the fresh air system is started in time to convey fresh air into the room, the air cleanliness in each independent room is improved, and the indoor environment is protected. And the comfort level of the living environment is further improved.

The invention discloses an efficient fresh air ventilator capable of adjusting the air speed and the air direction, and relates to the technical field of fresh air ventilation, the efficient fresh air ventilator comprises a main box body, the two sides of the main box body communicate with an exhaust pipe and an air inlet pipe correspondingly, a filter plate is connected into the air inlet pipe, and a vibration assembly and a cleaning and collecting assembly are arranged on one side of the filter plate. According to the scheme, by arranging the direction adjusting assembly, when a driving motor drives a ratchet gear to rotate clockwise through a rotating shaft, the rotating shaft can drive adjusting fan blades to deflect through a rotating fluted disc and a linkage gear, so that a rotating ring is in an open state, the air outlet direction is adjusted according to the deflection angle of the adjusting fan blades, and the air outlet direction is adjusted according to the opening and closing distance between the adjusting fan blades; after the air outlet amount is controlled and the adjustment of the adjusting fan blades is completed, the driving motor drives the ratchet gear to rotate anticlockwise, the ratchet gear drives the poke rod to move, the poke rod drives the fixing box to rotate, and the fixing box is matched with the rotating ring to drive the adjusting fan blades to rotate, so that the air outlet direction can be changed at any time, and the air outlet uniformity can be ensured.

The present invention discloses a marine medium-speed engine UPS power box with a humidity self-test function, comprising a marine medium-speed engine UPS power box body, a detection mechanism for detecting the humidity inside the box body, an extrusion drainage mechanism used in conjunction with the detection mechanism, and a control mechanism for controlling the operation of the detection mechanism and the extrusion drainage mechanism. The detection mechanism comprises an inlet fan installed through one side wall of the box body, an air outlet hood installed through the other side wall of the box body and having a built-in humidity sensor, and an outer cover installed at the air inlet end of the inlet fan. When the humidity in the air changes, the present invention achieves different degrees of water vapor adsorption effects by moving absorbent cotton of corresponding thickness to block the air inlet end of the inlet fan. That is, when the external humidity changes, the air humidity inside the box body is always maintained within a range suitable for the operation of the components.

The utility model relates to the technical field of air quality monitoring, and discloses an indoor air quality multi-channel rapid monitor, comprising: a monitoring module comprising an instrument part and a detection part, the detection part comprising a mounting box arranged at the bottom of the instrument part, a plurality of air chambers uniformly arranged at the bottom of the mounting box along the left and right, the bottom of each air chamber being open, different types of sensors are respectively arranged in the sensors; the adjusting diffusion module comprises a ventilation box, the bottom of the adjusting diffusion module is provided with a plurality of air inlet channels, the top of the adjusting diffusion module is provided with an air replacement module, all the air chambers are arranged in the ventilation box, and air in the ventilation box is subjected to standing and free diffusion in the ventilation box after being replaced by the air replacement module and is detected through a sensor; the blowback ventilation module is arranged on one side of the ventilation box and used for carrying out blowback and replacement on gas in the ventilation box, and compared with the prior art, the detection device has the advantages that detection is carried out through gas replacement and gas diffusion, and the nitrogen blowback cleaning function is achieved.

The invention discloses an exhaust system arrangement method and device based on a water pump house and a medium, and the method comprises the steps that space parameters in a building information model are obtained, and the minimum exhaust air rate of the water pump house is calculated through a ventilation frequency method based on the space parameters; the space parameters comprise room area, floor height, beam height and obstacle position information; obstacle distribution in the water pump house is recognized, the priority of a passing area is defined, and an air pipeline routing path is generated based on a path planning algorithm; according to the minimum exhaust air rate, the route of the air pipeline and a preset air speed limit value, air pipe component parts are calculated, fan parameters corresponding to an exhaust system are selected, and the sectional area of the air pipe is determined; the fan parameters comprise model parameters and air volume; and according to the sectional area of the air pipe and the fan parameters, the corresponding air pipe component parts are automatically matched, and according to a preset standardized connection rule, the air pipe component parts are subjected to spatial layout combination.

The utility model provides an elevator ventilation device which comprises a motor and a ventilation mechanism, a fan motor is started to drive a rotary fan to operate, air flow enters from the outside of an elevator through a long-strip hole of an air inlet channel, and the air flow is blown downwards from the upper side of the rotary fan to form continuous air flow. Air flow downwards flows in the air inlet channel, is divided into four groups in the outward direction through the flow dividing channel and enters the trapezoidal air channel, the air flow is dispersed, the air flow in the trapezoidal air channel is changed in direction and flows downwards through the flow guide groove, and finally the air flow flows out through the long-strip-shaped holes of the ventilation plate through the air outlet channel. Airflow is dispersed and blown out downwards from the edge of the car top plate through the four groups of diversion channels, the airflow strength is reduced, the cross section is increased, the comfort of passengers is improved, the airflow at the top of the car can flow out of the elevator through long-strip holes in the car air outlet side plate at the bottom, circulation of inlet and outlet airflow is completed by the elevator, peculiar smell residues in the elevator are avoided, and the elevator safety is improved. The air temperature in the elevator is kept constant, and the good and effective ventilation effect is achieved.

The invention discloses a modularized intelligent power distribution cabinet and a method, and relates to the technical field of intelligent power grid power distribution cabinets. The intelligent power distribution cabinet comprises a power distribution cabinet main body used for an intelligent power grid, and further comprises a separation frame arranged in the power distribution cabinet main body and used for dividing the internal space of the power distribution cabinet main body into a power distribution area and an adjusting area, and the side part of the separation frame is provided with a temperature and humidity sensor used for monitoring the internal temperature and humidity of the power distribution area; the air exchange unit comprises an air inlet assembly and a cleaning assembly; the adjusting unit comprises a circulating assembly and an adsorption assembly. The system has the advantages that the temperature and humidity in the power distribution area can be monitored in real time during working, accurate control over the temperature and humidity in the power distribution area can be achieved in an external circulation heat dissipation and internal circulation dehumidification temperature control mode, and the service life of a power distribution unit in the power distribution area is prolonged; and meanwhile, automatic cleaning and regeneration of a ventilation grating opening and an activated carbon adsorption plate are achieved in the heat dissipation and dehumidification process, and the intelligent degree and the automation degree are higher.

The invention relates to the technical field of building equipment design, discloses a residence-based fresh air system generation method, device and equipment and a storage medium, and is used for improving the design efficiency of a fresh air system. The residence-based fresh air system generation method comprises the steps that house type information of a residence is acquired, wherein the house type information comprises actual room layout, house type area information, room clear height, room function distribution and resident number information; on the basis of the house type information, the fresh air volume is calculated through a ventilation frequency method and a carbon dioxide concentration method, and the larger value in calculation results is selected as the target fresh air volume; determining a starting position and a final position of the fresh air system according to the house type information; grid division is performed on the actual room layout based on the starting point position and the ending point position, and a target path is generated; and generating a target fresh air system according to the target path and the target fresh air volume.

The invention relates to the technical field of building intelligent heating and ventilation system design and software development, and provides a fresh air system wiring method and system.The fresh air system wiring method comprises the steps that a building space model is analyzed, and space structure parameters of a room are obtained; according to the space structure parameters of the rooms, on the basis of preset air quality standards and building specifications, the ventilation times or unit area air volume values corresponding to the different rooms are automatically matched, and the fresh air volume and the return air volume of each room are calculated; according to a room type matching arrangement rule, determining an air supply / exhaust dominant strategy, generating an air port candidate position set meeting a preset obstacle avoidance rule in combination with room structure obstacle data and an avoidance condition, and outputting room air port coordinates and installation parameters based on an air quantity demand and a candidate position scoring result; and building the building space into a node network, defining a communication relation between nodes and an edge weight, and generating an optimal air pipe arrangement path from the air port to the host through a path planning algorithm.

The plastic packaging bag comprises a bag body with an object containing cavity, a bag opening is formed in the bag body, bag body sealing strips are located on membranes on the two sides of the bag opening respectively, an exhaust assembly is further arranged on the bag body, a one-way air valve A, a one-way air valve B and an air bag are arranged in the exhaust assembly, the one-way air valve A is connected with the object containing cavity, and the one-way air valve B is connected with the air bag. The one-way air valve B is connected with the air bag and outside air. The air bag is used for sucking air in the containing cavity in a one-way mode and discharging the air to the outside. According to the plastic packaging bag, the exhaust structure with the air bag and the moisture-proof and moisture-absorbing air inlet are arranged, after the bag opening is closed, internal air is actively exhausted and ventilated through the air bag, and the second cavity of the outer bag can expand to protect articles in the inner bag; the bag opening starch drying device can absorb moisture leaked in the sealed state, the internal damp speed is reduced, and the packaging bag is suitable for being used for various sealed and damp-proof packaged objects and food.

The utility model relates to a cold and heat recovery system for a constant-temperature room. A conventional air heat exchanger is independently installed in an existing drying room, plate type cross heat exchange is adopted in the heat exchanger, the heat exchange efficiency is low, and air exchange in the room is uneven. The device comprises a drying room and a cooling and heating main machine, an air outlet of the drying room is connected with an air inlet of the cooling and heating main machine through an air return pipe, and an air outlet of the cooling and heating main machine is connected with an air inlet of the drying room through an air supply pipe. An air outlet and a fresh air inlet of the translation type cold and heat recoverer are both formed in the side portion of the air return pipe, the air outlet is closer to an air outlet of the drying room, and an air exhaust fan is arranged at the air outlet of the translation type cold and heat recoverer. According to the utility model, the heating efficiency of a main machine can be improved by simply modifying a conventional drying room structure, and heat can be recovered and efficiently recycled.

The invention belongs to the technical field of container energy storage, and particularly relates to a cooling and heat preservation system for container energy storage and a control method.The cooling and heat preservation system comprises an energy storage container composed of an outer box body and an inner box body arranged in the energy storage container, box doors are hinged to the two ends of the outer box body, and vent grooves are formed in the box doors; a mounting frame is arranged in the inner box body, and a battery pack is arranged on the mounting frame; the air exchange assembly comprises air exchange boxes symmetrically arranged above the two ends of the inner box body, and air exchange fans are installed on the air exchange boxes on the two sides; the air guide assembly comprises an air guide pipe and a supporting plate; the supporting plate is fixed to the lower portion in the inner box body, and air holes are evenly distributed in the supporting plate. By arranging the ventilation assembly and the heating piece, the working mode of the equipment can be automatically switched according to the detected temperature, and if the internal temperature is higher than the upper limit threshold value, the equipment enters the heat dissipation mode; and if the internal temperature is lower than the lower limit threshold value, entering a heat preservation mode to ensure that the battery pack stably operates in a suitable temperature environment.

The ventilation device comprises a ventilation mechanism and a cleaning mechanism, a driving motor is started to drive a driving shaft to rotate, and fan blades are driven to rotate through rotation of the driving shaft, so that air in the plant exchanges with external air through two ventilation openings, and the ventilation effect of the plant is improved. A trapezoidal frame is arranged in the ventilation frame, a filter plate is arranged on the trapezoidal frame, a plurality of filter holes are formed in the filter plate, air can be filtered, external impurities are prevented from entering the plant, an adjusting motor drives an adjusting shaft to rotate, and a mounting disc is driven to rotate; the guide plate is driven by the movable rod to slide along the two guide columns, then the vertical plate is driven to horizontally move, meanwhile, the dredging rod horizontally moves to be inserted into the filter hole to dredge the interior of the filter hole, the filter hole is prevented from being blocked, the filtering effect is improved, and the filter has high popularization value.

The invention relates to the technical field of container houses, and discloses an intelligent environment control system for a container house, a temperature acquisition module deploys temperature sensing nodes in a plurality of temperature control areas divided in the vertical direction of the container house, and obtains the internal air temperature value and the envelope surface temperature value of each temperature control area; the model construction module determines a thermal resistance characteristic coefficient according to the surface temperature value and the internal air temperature value of the enclosure structure, determines a ventilation heat exchange coefficient according to the ventilation flow value and the internal and external temperature difference, and constructs a dynamic thermal resistance model based on the thermal resistance characteristic coefficient and the ventilation heat exchange coefficient; a deviation analysis module performs deviation analysis on the internal air temperature value and a preset target temperature field to obtain a temperature field deviation degree, and calculates a temperature control demand level; the temperature control module generates a cooperative control sequence of variable frequency air conditioner power adjustment and ventilation device opening adjustment according to the temperature control requirement level and a preset energy consumption constraint condition, and the uniformity, comfort and energy efficiency of temperature control of the container house are improved.

The invention relates to the technical field of online monitoring, and provides a vacuum environment-friendly GIS air chamber remote control ventilation device and ventilation method.The method comprises the steps that firstly, air chamber environment information in a GIS air chamber is collected; then, according to the micro-water content information in the gas chamber environment information, the GIS gas chamber environment state is judged, when the micro-water content in the GIS gas chamber is higher than the micro-water upper limit value, inflation operation or deflation operation is selected to be executed according to the current density of the insulating gas in the GIS gas chamber, and when the density of the insulating gas is larger than the deflation threshold value, inflation operation or deflation operation is selected to be executed; the method comprises the following steps: firstly, performing deflation operation until the density of insulating gas reaches a deflation threshold value, and alternately performing inflation and deflation operation until the micro-water content is reduced to a micro-water lower limit value; and when the density of the insulating gas is smaller than the deflation threshold value, firstly filling the GIS gas chamber with the insulating gas to enable the density of the insulating gas in the GIS gas chamber to be larger than the deflation threshold value, and then alternately executing the inflation and deflation operations until the micro-water content is reduced to the micro-water lower limit value.

The utility model provides a garage electric control door with an automatic ventilation function, belongs to the technical field of garage electric control doors, and aims to solve the problems that according to an existing garage electric control door with the automatic ventilation function, a filter is prone to blockage after being used for a long time, and cleaning and maintenance are too tedious. And the exhaust port is easy to cause sand and dust impurities to flow backwards. Comprising a garage support. The garage door body is mounted in the garage bracket; the driving mechanism is mounted at the upper part of the garage bracket; the air inlet channel is fixedly mounted at the upper part of the garage bracket; the air exhaust fan is fixedly mounted in the air inlet channel; the filter is fixedly mounted in the air inlet channel; the air inlet assembly is arranged in the air inlet channel; and the exhaust assembly is arranged in the exhaust port. The device has the advantages of being convenient to maintain, quick to clean, convenient to ventilate and the like.

The present invention relates to a movable port quarantine cabin, the purpose of which is to provide a flexible, well-insulated, effectively partitioned workplace for customs port quarantine operations to prevent cross-contamination. It is equipped with a trailer chassis and a body, which can move in the form of a vehicle and also provide a quarantine office space in the form of a house. The body is provided with side walls and a top cover, and the side walls are provided with doors. Inside the body, functional rooms such as a workroom, a sampling room, a disinfection room, a dressing room, etc. and an equipment room are effectively partitioned by wall panels. Disinfection devices and air change devices are provided in the functional rooms, and the layout of the functional rooms can prevent cross-contamination. The present invention can be widely applied to occasions where outdoor quarantine operations are carried out at customs ports.

The utility model relates to the technical field of box-type substations, and discloses an improved structure of a ventilation top cover of a box-type substation, which comprises a top cover body, two protection plates are arranged on the upper surface of the top cover body, two ventilation pipes are arranged on the surfaces of the protection plates, and a dustproof net is arranged on the surface of an opening on the outer side of each ventilation pipe. A ventilation mechanism is installed in the ventilation pipe, and a static electricity removing fan is installed in the protection plate. According to the scheme, a moving rod moves on the surface of an arc-shaped guide plate, at the moment, a rotating shaft and a ventilation plate are driven to rotate under the action of a connecting plate and a connecting rod, and therefore the interior of a ventilation pipe is opened or closed; and meanwhile, the probability that outside dust enters can be reduced under the action of a dustproof net, meanwhile, an electrostatic eliminating draught fan can conduct anti-electrostatic treatment, the electric arc risk is reduced, and safety is improved.

1. Name of the product in this design: Linear bathroom heater. 2. Application of this design: This design is intended for lighting, heating, and ventilation. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention belongs to the technical field of intelligent control of air conditioners, and relates to an intelligent regulation and control method and system for hotel air conditioners, and the method comprises the following steps: generating a check-in judgment basic data set; generating a real check-in activation instruction or skipping to a check-out blocking action; an energy-saving standby instruction is generated to control the air conditioner to be switched to a low-power ventilation mode, and a home leaving state mark is output; when a power-taking groove power-off signal is detected and a foreground settlement completion confirmation signal is received, the refrigeration and heating functions of a guest room air conditioner host are closed, and a periodic ventilation mode is entered to generate an empty room energy-saving mark; the surplus cooling capacity is transferred to a high-temperature demand room on the same floor, and meanwhile, an electric charge deduction value corresponding to the idle target room is generated; according to the electric charge deduction value, a hotel settlement system is linked to issue an electric charge deduction voucher, air valve opening adjustment is executed based on the surplus cold energy resource mark, and an air valve automatic distribution action is formed; and outputting the pre-starting regulation and control package to the target air conditioner host. The problem that cold and hot resources in floors cannot be compensated interactively is solved.

The utility model discloses a building fresh air ventilation device which comprises a machine box, an air inlet is formed in one side of the front portion of the machine box, an air outlet is formed in the other side of the front portion of the machine box, an air supply outlet is formed in one side of the rear portion of the machine box, and an adjusting mechanism is arranged on one side of the air supply outlet. An air return opening is formed in the other side of the rear portion of the machine box. According to the fresh air ventilation equipment for the building, through cooperative use of the filtering mechanism, along with long-time use of the equipment, dust, particulate matter and other impurities can be gradually accumulated on a filtering net in a filtering box, a user can drive an ejection block to eject a sliding block out of a sliding rail under the action effect of a spring by pulling out a plug pin, and then the sliding block is pushed out; the filter box is automatically ejected out from one side of the machine box, the filter screen in the filter box is replaced, the ejection design is adopted, the filter screen is very easy to replace, a user can complete replacement only through simple operation, and the whole machine box does not need to be disassembled or subjected to complex maintenance.

This invention discloses a fresh air ventilation system for a prefabricated bathroom and the bathroom thereof, comprising a system body with a ventilation cavity inside. Three sets of absorbent cotton strips extend from one end of a movable plate and are fitted into a second protective tube. An installation cavity is located within the system body. The end of the movable plate away from the first protective tube extends into a connecting cavity. The end of a T-shaped locking rod away from the sliding cavity is engaged in a locking groove located within a guide groove. A first spring is fixedly connected within the sliding cavity, and the other end of the first spring is fixedly connected to the T-shaped locking rod. Simultaneous ventilation and air intake can be achieved by installing two sets of system bodies, or by installing one set of system bodies for both ventilation and air intake. The fan rotation carries the fragrance liquid absorbed by the sponge into the prefabricated bathroom, purifying the air. Heated by a heating element, the air entering the bathroom is warm, making it usable in winter.

The utility model relates to the technical field of window sashes, in particular to a window sash convenient for bidirectional ventilation, which comprises a rotationally arranged wind wheel body, a shell arranged on the outer side of the wind wheel body and air ports arranged on two sides of the shell, and a driving component used for driving the wind wheel body to rotate is mounted on the inner side of the shell. The driving assembly comprises a shell, a ventilation assembly is arranged in the shell, the ventilation assembly comprises a wind cutting assembly and a wind guide plate, the driving assembly further comprises wind wheel limiting plates, the wind guide plate is detachably connected with the wind wheel limiting plates at the two ends, and the wind cutting assembly is fixedly installed on the inner side of the shell. A smooth flow guide end face is arranged at the end, close to the air opening, of the air cutting assembly. The air cutting plate is installed on the inner side of the shell, the smooth flow guide end face is arranged on the side, close to the air opening, of the air cutting plate, air flow can be guided into the shell smoothly through the smooth surface of the air cutting plate, and the situation that the air flow is turbulent at the inlet of the shell is avoided.

The utility model discloses an outdoor high-safety transformer, which relates to the technical field of transformers and comprises a transformer body, and a protection mechanism is arranged at the bottom of the transformer body. The transformer body comprises a protective shell, the top of the protective shell is fixedly connected with an accelerated ventilation mechanism, and the top of the accelerated ventilation mechanism is fixedly connected with a connecting pipe. Through the cooperation of the protective shell, the connecting pipe, the material storage box, the material changing port, the ventilation port, the temperature detector, the motor and the fan, when the temperature detector detects that the voltage transformation element works too hot, the motor is started, the fan is driven to rotate, external air enters the material storage box through the ventilation port, adsorption materials are stored in the material storage box, and the adsorption materials are stored in the material storage box. According to the transformer, impurities in external air are filtered out, moisture in the air is reduced, then the air enters the protective shell through the connecting pipe and the shell, circulation of the air in the protective shell is accelerated, aging of the transformer is delayed, the probability that the transformer breaks down due to overheating is reduced, and the transformer is higher in safety and longer in service life.

The invention discloses a workshop grading air interchanger and a flow guide structure thereof, and relates to the technical field of air interchangers, the workshop grading air interchanger comprises a device main body provided with an air inlet and an air outlet, and at least one stage of flow guide assembly is arranged between the air inlet and the air outlet in the device main body; the flow guide assembly comprises a fixed flow guide frame fixedly installed and a plurality of movable flow guide plates rotationally arranged in a flow guide channel of the fixed flow guide frame, a plurality of flow guide holes are formed in the plate face of each movable flow guide plate, a plate body is of an arc-shaped structure protruding towards the downstream of the airflow, and the airflow direction is accurately guided through the movable flow guide plates with the adjustable angles. And by combining the design of the arc-shaped plate surface and the flow guide holes, eddy current is inhibited, wind resistance is reduced, and the uniformity of airflow distribution is improved.

1. The name of the design product: fume hood. 2. The use of the design product: for large-scale site ventilation and smoke exhaust. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.