1532 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 utility model relates to the technical field of power distribution cabinets, and in particular to a ventilation mechanism of a positive pressure explosion-proof power distribution cabinet, comprising a power distribution cabinet, wherein an air inlet device is arranged on the top of the power distribution cabinet, the air inlet device comprises a box body arranged on the top of the power distribution cabinet, an air inlet is opened on the side of the box body, a dust cover is arranged on the outer side of the air inlet, the bottom of the box body is connected with the inside of the power distribution cabinet body through a through hole opened on the top of the power distribution cabinet body, a filter bin is arranged inside the box body, a heat dissipation device is arranged at the bottom end of the inside of the power distribution cabinet body, the heat dissipation device is composed of a heat exchange box, a cooling pipe and a support box, and is used to reduce the heat generated by the long-term use of electrical components in the cabinet. The ventilation mechanism of the positive pressure explosion-proof power distribution cabinet realizes the replacement of clean gas inside the power distribution cabinet through the air inlet device and the air outlet pipe, realizes efficient heat dissipation inside the power distribution cabinet through the unique heat dissipation device, increases practicality, and further improves the safety of the positive pressure explosion-proof power distribution cabinet.

The invention relates to the technical field of computer aided design, in particular to an energy-saving building design method based on digital simulation, which comprises the following steps: analyzing air velocity, temperature gradient, density and pressure distribution based on indoor aerodynamic parameters, identifying air vortex structure characteristics, and generating an energy-saving building environment data set. According to the method, aerodynamic characteristics in a building are accurately recognized, the vortex structure analysis capacity is improved, the air flowing path is optimized, aerodynamic parameters are combined, thermal resistance and heat conduction materials are matched, the building envelope layer is adjusted, heat flow transmission is guided, heat loss is reduced, the heat energy utilization rate is increased, and the spectral characteristics of the materials are adjusted according to illumination redundancy; the lighting efficiency is optimized, the heat load is reduced, outer wall heat transfer is optimized in combination with airflow characteristics, the ventilation rate is dynamically regulated and controlled, airflow short circuit is avoided, heat flow, illumination and ventilation parameters are integrated, precise optimization of building energy consumption is achieved, and the energy efficiency regulation and control level is improved.

The utility model discloses a special ventilation device for a modularized data center, which comprises a ventilation device body, a vibration mechanism and a dust collection mechanism, a filter mechanism body is arranged on the ventilation device body, the vibration mechanism is arranged in the ventilation device body, the vibration mechanism comprises a pair of rotating rods, a plurality of cams are arranged on the pair of rotating rods, and the dust collection mechanism is arranged on the dust collection mechanism. A plurality of supporting frames are fixedly installed in the ventilation device body, the rotating rods are connected with the supporting frames, and bearings are installed between the supporting frames and the rotating rods. Through the arrangement of corresponding mechanisms on the ventilation device, dust on the filtering mechanism of the ventilation device can be vibrated down in a vibration mode after the ventilation device is used for a long time, meanwhile, the dust can be conveniently sucked away through the dust suction mechanism, and therefore the problem that the dust flies everywhere can be avoided; therefore, the ventilation device can be prevented from being blocked through vibration, and the tire body can be manually cleaned.

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 invention relates to the technical field of air conditioners, in particular to a cabinet air conditioner with a fresh air function, which comprises an air conditioner shell and a fresh air inlet pipe, a fresh air front air outlet is arranged on the fresh air shell, the fresh air front air outlet is arranged on the front side of a fresh air second rear air outlet, and a fresh air connector is arranged on an air duct rear side plate. And the fresh air front air outlet is communicated with the air conditioner air duct through the fresh air connecting port. When the air conditioner is used, part of fresh air enters a room from the front face of the air conditioner shell through the fresh air inlet pipe, the first fresh air inlet, the second fresh air inlet, the fresh air duct, the fresh air front air outlet, the fresh air connector, the air conditioner duct and the first air conditioner air outlet, the fresh air transmission efficiency is effectively improved, and the fresh air exchange efficiency of the whole room is improved; moreover, the first air conditioner air outlet is formed in the lower middle portion of the front face of the air conditioner shell, air outlet of the air conditioner cannot directly blow the upper half body of the user, and therefore the user experience feeling is remarkably improved.

The invention provides a data acquisition and analysis method of an intelligent sofa, which comprises the following steps: arranging an electrostatic sensor array on the intelligent sofa, and acquiring electrostatic signal intensity and polarity distribution, human body charge and environmental humidity data of different areas on the surface of the sofa in real time to obtain electrostatic distribution data; under different air quality conditions including pollutant concentration and particulate matter content, according to the electrostatic characteristic parameters, a mapping relation model of the electrostatic characteristic parameters and the air quality is trained through a support vector machine algorithm; inputting sofa static signal intensity collected in real time into the trained mapping relation model of static characteristics and air quality to obtain changes of the static characteristics, and evaluating indoor air quality in real time; if the evaluation result shows that the air quality is smaller than the air quality threshold value, an air purification device of the intelligent sofa is triggered, an air purifier is started, and the ventilation amount of a fresh air system is increased so as to improve the indoor air environment.

The invention provides an air bath temperature control device and method for solving the problems existing in an existing temperature control technology. The device comprises a backflow cavity, a static pressure cavity and an air bath cavity which are all provided with heat preservation layers. The backflow cavity is provided with an inner circulation fan, a refrigeration module, a heating module, an outer circulation scavenging port, an outer circulation scavenging air valve and related parts. The air bath cavity is provided with a second temperature sensor and an internal circulation scavenging port; the static pressure cavity is provided with a temperature sensor, an equal-air-volume air supply duct, a flow guide plate and a flow diffusion plate. The three chambers are connected in pairs through the inner circulation air inlet, the flow dispersing plate and the inner circulation air exchange port to form an air circulation channel. And the real-time temperature in the cavity is obtained by calculating the monitoring values of the plurality of temperature sensors through a data fusion strategy. According to the control method, different temperature control strategies are operated according to the difference value between the real-time temperature of the air bath cavity and the external temperature and the difference value between the real-time temperature of the air bath cavity and the target temperature. The method has the effects of high temperature control uniformity and reliability, high efficiency, energy conservation, accurate temperature control and the like.

The ventilation design system is characterized in that the ventilation design system comprises an intelligent sensor module, an efficient ventilation device, an air purification module and an intelligent control center; the intelligent sensor modules are distributed in a ventilation area in a plant and used for monitoring temperature, humidity and air quality parameters in real time. The efficient air interchanger is arranged on the top and the side wall of a plant and is designed in a streamline mode. The air purification module is arranged in the air interchanger and is used for filtering dust and harmful gas in the air; the intelligent control center automatically adjusts the operation state of the ventilation device according to data of the sensor. According to the ventilation design system applied to the factory building, streamline design and a modular combination mode are adopted, airflow organization is optimized, ventilation dead angles are eliminated, the ventilation efficiency is improved, ventilation requirements are predicted through an intelligent control algorithm and big data analysis, and unnecessary energy consumption is avoided.

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 provides a big data information processing method and system. According to the method, an energy distribution model is generated by combining a building information model with infrared thermal imaging data, and a dynamic thermal balance equation set is constructed according to the model so as to generate three-dimensional temperature field reconstruction data. Then, thermal resistance parameters in the energy distribution model, heat flow abnormal area coordinates in the three-dimensional temperature field reconstruction data and air conditioning unit current data are analyzed through a deep learning algorithm, and space-time coupling characteristics of equipment power consumption and thermal environment parameters are extracted; then, a priority regulation and control chain of the temperature control equipment is formulated, and multi-stage linkage rules of the fresh air exchange rate, illumination dimming and cold release of the cold storage tank are covered; finally, the chilled water pump phase difference, the air conditioner group operation mode and the emergency lighting power limiting value are dynamically adjusted, and power load stabilization is achieved. According to the technical scheme provided by the invention, the data information processing efficiency and stability of the large building can be 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 ships, and provides a methanol isolation cabin and a ship, which comprise a shell, a gas injection assembly and a gas exchange assembly. Wherein the methanol fuel cabin is wrapped with the shell, and the shell and a shell of the methanol fuel cabin are arranged in a spaced mode to form an isolation space; the gas injection assembly comprises a first pipeline, one end of the first pipeline is inserted into the isolation space, and inert gas can be selectively introduced into the isolation space; the ventilation assembly comprises a second pipeline and a third pipeline, the second pipeline and the third pipeline both communicate with the isolation space, the second pipeline can selectively communicate with the indoor environment and the outdoor environment of the isolation space, and the third pipeline can be selectively connected with any one of the breather valve and the first air pipe head. Through the arrangement, the use efficiency of the inert gas can be improved, and the safety of the methanol isolation cabin is improved.

The invention relates to the technical field of indoor air treatment, and discloses an indoor fresh air humidification system which comprises an air exchange mechanism, and a humidification mechanism is arranged on the left side of the air exchange mechanism. When the indoor fresh air humidification system is used, an impeller is driven by a first motor in the air exchange mechanism to suck in external air, the external air is filtered by a primary filter screen and a high-efficiency filter screen and then fed into the humidification mechanism and a PTC humidifier, moisture is evaporated through PTC heating, the air is humidified, and then the air is conveyed into a room through an air conveying pipeline; the filter screen can be conveniently inserted into the ventilation mechanism through the clamping groove, the clamping block is pressed during insertion to enable the spring to contract, the clamping block is expanded by the elastic force of the spring when the filter screen is inserted to the bottom end, the groove in the surface of the filter screen is clamped, fixation can be relieved and the filter screen can be easily taken out only by pulling the pull ring when the filter screen is fixed and replaced, and part of water mist stays in a pipeline in the humidified air conveying process. And a second motor is started to drive a knocking device, so that the gas pipeline vibrates, water mist is vibrated, and a hard scale layer is prevented from being formed.

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 invention provides an existing building outer wall transformation structure, and belongs to the technical field of buildings, the existing building outer wall transformation structure comprises an inner side wall plate and an outer side wall plate, two ends of the inner side wall plate and the outer side wall plate are fixed on structural columns, a battery mounting plate is arranged between the inner side wall plate and the outer side wall plate, and a battery module is mounted on the battery mounting plate; a noise reduction assembly is arranged between the battery mounting plate and the outer side wall plate, and an air exchange part is arranged in the noise reduction assembly; the ventilation part comprises a long connecting plate, linkage assemblies are symmetrically installed on the long connecting plate, and folding air boxes are arranged in the linkage assemblies and located on the two sides of the long connecting plate correspondingly; through the linkage assembly, the first folding air box sucks air and the second folding air box exhausts air or the first folding air box exhausts air and the second folding air box sucks air, and air outside the outer side wall plate and air inside the inner side wall plate are exchanged. According to the outer wall structure, an existing building outer wall is transformed into the outer wall structure integrating the battery storage function, the noise reduction function and the ventilation function, and the functionality and practicability of the building outer wall are improved.

The utility model discloses a coal mine dust ventilation system which comprises a ventilation box provided with an air inlet and an air outlet, and is characterized in that a cyclone separator and a filter pipe are arranged in the ventilation box, an air inlet pipe of the cyclone separator is communicated with the air inlet, an air outlet pipe of the cyclone separator is communicated with the filter pipe, and the filter pipe is communicated with the air outlet; a filter screen frame and blades are sequentially arranged in the filter pipe in the airflow direction of the air outlet, a rotating shaft is connected to a blade shaft, a filter screen is arranged on the filter screen frame, a circular ring is arranged in the center of the filter screen frame, cross rods connected with the filter screen frame are arranged on the two sides of the circular ring respectively, and a boss is arranged on the inner wall of the circular ring; when the blades rotate, the blade shaft drives the rotating shaft to rotate, and then the protruding block is driven to intermittently touch and jack up the boss, so that the filter screen continuously vibrates. According to the scheme, the problems that a filter screen of a traditional ventilation system is prone to being blocked and cannot be automatically cleaned are solved.

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 field of operating room ventilation, in particular to a ventilation and purification control system based on an intelligent operating room, and aims to solve the problem that a ventilation system running at constant power cannot cope with a complex and changeable dust and bacterium environment, so that the ventilation and purification efficiency is inappropriate. Comprising an air volume management and control unit, a purification rate management and control unit, a ventilation task management unit, a ventilation environment acquisition unit, a purification environment supervision unit and a purification equipment supervision unit. According to the invention, intelligent analysis is carried out according to the dust environment in the operating room and the idle time of the operating room, so that the purification work of the operating room does not influence the normal use of the operating room, the microbial environment in the operating room is monitored, and the operation of the sterilization equipment is intelligently controlled according to the microbial monitoring result; quantitative analysis is carried out according to the dust environment and the microbial environment, air volume control is achieved, the air volume can meet the rapid ventilation requirement of the dust environment, and the ventilation speed can be controlled to guarantee the sterilization effect.

The invention provides stadium ventilation equipment based on intelligent control, and relates to the technical field of ventilation control, the stadium ventilation equipment comprises a ventilation channel, the inner wall of the front side of the ventilation channel is rotatably provided with a transverse shutter; the ventilation channel is fixedly assembled through a positioning frame; an inner shutter frame is fixedly arranged at the indoor end of the ventilation channel; an assembly base is fixedly arranged on one side between the inner shutter frame and the ventilation channel, and a control electric cylinder is fixedly arranged at the telescopic end of the assembly base; a U-shaped bottom frame is fixedly arranged at the bottom of the inner shutter frame; an adjustable opening and closing control structure is adopted, the air inlet position and the air supply direction can be automatically adjusted according to the air direction, energy-saving and convenient ventilation is achieved, air exchange is conducted through natural air, the opening and closing degree of the vertical shutters and the transverse shutters is controlled, the air inlet speed or the air outlet speed can be limited, and the ventilation effect is improved. The problem that an existing device cannot automatically adjust the air inlet position according to the air direction conveniently is solved.

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 ventilation device comprises a ventilation pipeline and a supporting frame, the ventilation pipeline is installed on the top of the supporting frame, a ventilation pipe is arranged on the outer wall of the ventilation pipeline, one end of the ventilation pipeline is communicated with an air inlet pipe, a sliding rail is installed on the inner wall of the air inlet pipe, a filter is connected to the sliding rail in a sliding mode, and a limiting block is installed on the inner wall of the ventilation pipeline. The adjusting assembly comprises an electric push rod, a connecting rod, a rotating rod and a baffle, the connecting rod is installed at one end of the electric push rod, the rotating rod is installed at one end of the connecting rod, the baffle is rotationally connected to the rotating rod, and the electric push rod is installed on one side of the outer wall of the ventilation pipeline. By arranging the adjusting assembly, the ventilation quantity can be accurately adjusted according to actual needs, different working conditions and environment changes are adapted, different temperature, humidity and air circulation requirements in the refrigeration house are met, it is ensured that air in the refrigeration house is circulated and replaced, and the optimal ventilation effect and air quality are achieved; and the temperature and the humidity in the refrigeration house are always kept in a proper range.

The invention discloses a total heat recovery device, and relates to the technical field of fresh air ventilation, the total heat recovery device comprises a counterweight base, the upper surface of the counterweight base is provided with an outer shell, the top of the outer shell is fixedly provided with a transverse plate, the transverse plate is provided with an air inlet sleeve and an air outlet sleeve, and the outer shell is internally provided with an airflow channel; the air inlet end of the airflow channel communicates with the air inlet sleeve, the air outlet end of the airflow channel communicates with the air outlet sleeve, external airflow sequentially penetrates through the air inlet sleeve, the airflow channel and the air outlet sleeve and forms a first airflow path, and a heat exchange section used for heat recovery is arranged at the position, close to the air inlet end of the airflow channel, of the first airflow path; a cylindrical cavity is formed in the middle of the airflow channel in the outer shell, a driving motor is arranged in the cylindrical cavity of the outer shell, the output end of the driving motor is connected with a rotating wheel, and honeycomb-shaped hole channels with evenly-changing sections are formed in the outer surface of the rotating wheel. The method has the effect of quickly enhancing sensible heat exchange.

The utility model discloses an atomizer and an aerosol generating device. The atomizer comprises a storage piece and a heating body. The storage piece is provided with a storage cavity and a ventilation channel, the storage piece comprises a guide part, the ventilation channel penetrates through the bottom of the storage piece and communicates with the storage cavity, the guide part is arranged at the bottom of the storage piece and surrounds the ventilation channel, and the surface, facing the ventilation channel, of the guide part is an arc surface. The heating body is installed on the storage part and used for heating the aerosol generating substrate flowing from the storage cavity to the heating body to generate aerosol. In the suction process of a user, external air enters the ventilation channel in the form of bubbles. The arc-surface guide part can guide bubbles in the ventilation channel into the storage cavity and separate the bubbles from the ventilation channel, so that the situation that a plurality of bubbles are accumulated near the ventilation channel to form large bubbles can be avoided, the aerosol-generating substrate in the storage cavity can smoothly flow to the heating body, the aerosol-generating substrate near the heating body is sufficient, and the heating effect of the aerosol-generating substrate is improved. And the problem of charring when a user smokes can be avoided.

The invention discloses a method for predicting decoration pollutant concentration and identifying a main pollution source based on a ventilation environment, and belongs to the field of material pollutant monitoring. The method for predicting the pollutant concentration comprises the following steps: determining the type of a decoration material according to a design scheme, and constructing a data set; establishing a quantitative relation between the pollutant equilibrium release amount and the bearing rate according to the data set; the pollutant concentration of the decoration material in the closed environment is obtained; when the ventilation influence is considered, a quantitative relation of ventilation times is established; and obtaining the predicted concentration of the pollutants of the decoration material considering the ventilation influence. The invention further provides a method for identifying the main pollution source. The method has the beneficial effects that the method can adapt to different ventilation conditions, and the accuracy and reliability of concentration prediction are improved; decorative materials which have great influence on indoor air pollution can be recognized, and indoor pollution sources are reduced.