183 results about "Ventilation mode" patented technology

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 provides a ventilation device for construction in a tunnel. The ventilation device comprises an air supply barrel, an air inlet barrel is rotationally arranged in one end of the air supply barrel, an air inlet valve is arranged at the end, away from the air supply barrel, of the air inlet barrel, the outer side of the air supply barrel is sleeved with a dehumidification box, and the air inlet barrel can be communicated with or disconnected from the dehumidification box; air inlet windows are arranged on the two sides of the dehumidification box. An evaporation assembly and a condenser are sequentially arranged in the dehumidification box and correspond to the air inlet windows. The evaporation assembly is provided with a supporting frame corresponding to the air inlet window, and dehumidification plates are evenly arranged in the supporting frame. A water removal mechanism for removing condensate water on the side surface of the dehumidification plate is arranged on the outer side of the dehumidification plate in a sliding manner; according to the ventilation device for construction in the tunnel, connection or disconnection of the air inlet barrel and the interior of the dehumidification box can be switched according to needs, so that the ventilation device has two ventilation modes of direct air supply and dehumidification air supply, the ventilation requirements under different external air conditions in non-tunnel construction are met, and the humidity in the tunnel is reduced.

The invention discloses a temperature control lifting and rotating self-adaptive movable house, belongs to the technical field of constructional engineering, and aims at solving the problems that an existing temporary building is insufficient in thermal environment regulation and control, weak in self-adaptive capacity, high in energy consumption and the like. The box house comprises a house body, a paraffin-based thermal expansion driving system, an outer wall thermal bimetal shutter curtain wall system, an intelligent control system and a solar photovoltaic and ventilation integrated system. Wherein the paraffin-based thermal expansion driver can adjust the distance between a house and the ground, the thermal bimetal shutter curtain wall can dynamically shade and ventilate, the intelligent control system monitors parameters such as temperature gradient and heat exchange temperature difference, all the systems are linked to achieve automatic switching between a winter heat preservation mode and a summer ventilation mode, and the solar photovoltaic and ventilation system improves the energy utilization efficiency. Through cooperation of multiple systems, the box room can adapt to environment temperature changes, maintain the indoor comfortable temperature, reduce energy consumption and enhance the environment adaptability and structural stability of a temporary building, and is suitable for construction sites, disaster rescue and other scenes.

The invention discloses a blowing and sucking integrated fan which comprises a connecting shell, fan assemblies are fixedly connected to the upper end face and the lower end face of the connecting shell correspondingly, the fan assembly located at the lower end of the connecting shell is the first fan assembly, and the fan assembly located at the upper end of the connecting shell is the second fan assembly. An airflow channel is formed in the middle of the connecting shell and located between the first fan assembly and the second fan assembly, and the first fan assembly is used for guiding airflow to be sucked in from the circumferential direction of the second fan and exhausted from the circumferential direction of the first fan through the airflow channel in the middle of the connecting shell; the second fan assembly is used for guiding airflow to be sucked in from the circumferential direction of the first fan and exhausted from the circumferential direction of the second fan through the airflow channel connected with the middle of the shell. According to the blowing and sucking integrated fan, the two ventilation modes of air suction and air blowing can be provided at the same time, a driver and passengers can flexibly select a comfortable ventilation mode according to personal preference, and the sitting comfort can be greatly improved.

The invention discloses a long and large tunnel fire situation real-time prediction method based on image recognition and physical information fusion, and the method comprises the steps: 1, building a large and large gradient tunnel fire simulation device in a complex ventilation mode, and constructing a large and large gradient tunnel fire data set; 2, constructing a big gradient tunnel fire parameter prediction network based on a Vision Transform architecture; and 3, constructing a total loss function of the large gradient tunnel fire parameter prediction network and performing training so as to obtain an optimal fire parameter prediction model which is used for predicting the large gradient tunnel fire image and physical information to obtain large gradient tunnel fire parameters. According to the invention, dynamic simulation of a large gradient tunnel fire in a complex ventilation mode can be realized; and according to the flame image and the physical information, predicting the heat release rate of the fire hazard of the large gradient tunnel with different gradients / pressures / fuels / heights / positions and the temperature and heat flow distribution at different positions below the ceiling in real time under the coupling action of the complex ventilation mode in the construction operation and maintenance stage.

The invention provides an object surface microstructure and bubble composite resistance reduction measurement experimental device based on Taylor-Couette flow, and relates to the technical field of Taylor-Couette flow resistance reduction measurement. Comprising a rack supporting column, a rack supporting plate, a motor, an upper coupler, a torque sensor, an inner driving shaft, a lower coupler, a mechanical seal, an upper end sealing connecting piece, an inner rotor, an outer rotor, a lower end sealing connecting piece, a supporting column, a rack base, a one-way vent valve and a chassis. According to the invention, convenient replacement of different inner rotors with surface microstructures, smooth surfaces and the like can be realized according to experimental requirements; the switching between two ventilation modes of outward ventilation inside the inner rotor and vertical upward ventilation at the bottom of the inner rotor can be realized; flow control under different rotating speeds and gas flows can be realized through the gas flow meter and the motor controller; resistance borne by the inner rotor under different flow working conditions can be measured in real time through the torque sensor, and therefore research on the surface microstructure and bubble composite resistance reduction characteristic under Taylor-Couette flow is achieved.

The invention discloses a novel mixed ventilation method for tunnel hydrogen energy fire accident safety rescue. The novel mixed ventilation method comprises the steps that a multi-shaft tunnel model with a mixed ventilation system is established; a novel mixed ventilation mode is provided based on the advantages and disadvantages of the existing ventilation mode; comparing the influence of different novel mixed ventilation modes on the length of the hydrogen jet fire back layer and the temperature in the tunnel; the invention provides a novel mixed ventilation method with a speed prediction model for tunnel hydrogen energy fire accidents. According to the method, a novel mixed ventilation mode suitable for handling hydrogen energy fire accidents in the tunnel is provided on the basis of different ventilation mode-ventilation speed-temperature distribution conditions, a dimensionless prediction model of the critical longitudinal ventilation speed is established, and the danger of hydrogen jet fire in the tunnel is reduced; rapid selection of the ventilation mode and rapid prediction of the ventilation speed when the hydrogen jet fire occurs in the tunnel are achieved, and the method makes up for the limitation of a traditional single ventilation mode on hydrogen energy fire prevention and control.

The invention belongs to the field of pet cabins, particularly relates to an intelligent pet cabin, and aims to solve the problems that an existing cabin depends on a passive ventilation mode of a ventilation window, heat dissipation in the cabin only depends on the ventilation window in summer, the greenhouse effect is easily formed, the temperature is rapidly increased due to air retention, heatstroke, dehydration and even heat failure of pets are possibly caused, and cold air directly intrudes through the ventilation window in winter. In order to solve the problems that the temperature in a cabin is suddenly lowered, and small pets (such as puppies and short-hair cats) are prone to have a temperature loss symptom or immunity decline, the following scheme is provided that the fresh air system comprises a base and a fresh air system, an aluminum alloy frame is fixedly arranged at the top of the base, and tempered glass convenient to penetrate through the interior is fixedly arranged on the four sides of the aluminum alloy frame; one piece of tempered glass is provided with a door body convenient for pets to get in and out, the interior of the cabin is cooled in summer through the fresh air system, the interior of the cabin is heated in winter, the comfortable environment of the pets is improved, and the possibility that the pets get sick is reduced.

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 invention discloses an electric turbine anaesthesia machine with an automatic air supply function of an air storage bag and a method, and the anaesthesia machine comprises a turbine which is used as an active inspiration air source; a detachable air storage bag; an air supply one-way valve; the breathing circuit is connected between the turbine outlet and the patient end and comprises an inspiration branch provided with a flow diaphragm, an expiration branch provided with an expiration EV valve and an expiration flow diaphragm, and a patient breathing circuit tank assembly containing the air storage bag and the soda lime tank; a plurality of sensors; the control unit is electrically connected with and controls the turbine and the expiration EV valve, receives signals of the sensor and is used for achieving different breathing ventilation modes. According to the anesthesia machine and method, turbine driving is adopted, the tidal volume adjusting range is wide, and physical limitation of a folding bag is avoided; the air storage bag is externally arranged and replaceable, so that cleaning and maintenance are facilitated; a one-way valve automatic gas supply mechanism ensures continuous and stable gas supply; the device supports various breathing modes, and is suitable for various scenes such as anesthesia maintenance, postoperative awakening, oxygen therapy and the like.

This image is primarily an operational image for heat exchange type ventilation fans, used for switching ventilation modes and setting dehumidification / humidification. Specifically, the display within the hexagon and the arrow-shaped figure outside the hexagon change according to the ventilation mode, and the ventilation mode can be switched by operating the control panel at the bottom of the image.

This invention provides a ventilation device for tunnel construction, including an air supply duct, an air inlet duct rotatably mounted inside one end of the air supply duct, an air inlet valve mounted on the end of the air inlet duct opposite to the air supply duct, and a dehumidification box fitted on the outside of the air supply duct. The air inlet duct can be connected to or disconnected from the dehumidification box. Air inlets are provided on both sides of the dehumidification box, and an evaporation assembly and a condenser are sequentially arranged inside the dehumidification box corresponding to the air inlets. The evaporation assembly has a support frame corresponding to the air inlets, and dehumidification plates are evenly arranged inside the support frame. A desiccant mechanism for removing condensate from the sides of the dehumidification plates is slidably mounted on their outer side. The tunnel construction ventilation device of this invention can switch the connection or disconnection between the air inlet duct and the dehumidification box as needed, enabling the device to have both direct air supply and dehumidification air supply ventilation modes, meeting the ventilation needs under different external air conditions during tunnel construction and reducing the humidity inside the tunnel.

This invention provides a processing system, comprising: a first temperature regulating component, which, when the processing system is in dehumidification mode, cools and dehumidifies the fresh air passing through it to form low-humidity fresh air; and, when the processing system is in ventilation mode, heats the low-humidity fresh air. A first heating component is used to heat the low-humidity fresh air flowing out of the first temperature regulating component. A component to be dried is disposed within the ventilation area of ​​the drying unit, and the low-humidity fresh air flowing out of the first heating component passes through the ventilation area of ​​the drying unit to form exhaust air. A first solution heat exchanger is connected to the ventilation area to allow heat exchange between the heat exchange liquid and the exhaust air flowing out of the ventilation area, thereby exchanging heat with the low-temperature liquid to form a high-temperature liquid. The high-temperature liquid is used to enter a heating channel to heat and dry the component to be dried. This invention solves the problem of high energy consumption in gelatin drying in the prior art.

The disclosure provides a method of operating a (HVAC) system. The method includes measuring a concentration of a gas in the target space, and determining that the concentration exceeds a gas concentration threshold. The method includes determining that operation of the HVAC system in a ventilation mode is indicated to reduce the concentration of the gas. The method includes determining a total capacity of the HVAC system, and determining a current capacity of the HVAC system. The method includes causing the HVAC system to operate in the ventilation mode after validating that the total capacity is greater than the current capacity during operation of the HVAC system in the ventilation mode.

The embodiment of the present invention relates to a dual-channel air ventilation and purification device and a valve assembly thereof, which relates to the field of air purification technology. The main purpose is to provide a multifunctional and easy-to-operate dual-channel air ventilation and purification device and a valve assembly thereof. The main technical solution adopted is: the valve assembly includes: a valve base, the valve base is provided with a ventilation valve port, a purification valve port, and a negative pressure valve port; a ventilation valve core body, which is provided at the ventilation valve port; a purification valve core body, which is provided at the purification valve port; a negative pressure valve core body, which is provided at the negative pressure valve port; and an operating component for jointly controlling the ventilation valve core body, the purification valve core body, and the negative pressure valve core body. Compared with the prior art, when operating in the ventilation mode, there is no need to operate the electrically controlled purification valve and the electrically controlled negative pressure valve, and the operation process is more convenient.

The invention discloses a temperature and humidity control circuit for an NOR memory, which relates to the technical field of NOR memories and comprises an NOR memory module for supplying power and storing data, a humidity detection module and a temperature detection module for detecting the temperature and humidity of the NOR memory, and a control module for controlling the temperature and humidity of the NOR memory. When the detected temperature is larger than a set over-temperature threshold value or the detected humidity is larger than an over-humidity threshold value, the temperature and humidity adjusting module is controlled by the driving control module to conduct temperature and humidity adjusting control in a ventilation mode; the state detection module detects the change rate of the temperature, controls the temperature and humidity adjusting module to adjust the temperature and humidity when the change rate of the temperature is larger than a set change threshold value, and adjusts the temperature and humidity adjusting rate of the temperature and humidity adjusting module when the temperature is over-high or the change rate of the temperature is larger than the change threshold value and the temperature is over-high. According to the temperature and humidity control circuit for the NOR memory, the temperature and humidity reduction effect on the NOR memory can be improved.

The present invention discloses a seat ventilation system and a control method thereof, which relate to the technical field of automobile seats, wherein the seat ventilation system includes a seat frame, an air outlet structure and a ventilation structure, the seat frame is provided with an air outlet control structure, the air outlet structure is installed on the seat frame, the output end of the air outlet structure is provided with a first air outlet and a second air outlet, the ventilation structure is provided on the seat frame, the ventilation structure is provided with a first air guide passage and a second air guide passage, the two ends of the first air guide passage are respectively connected to the second air outlet and the air outlet control structure. During actual use, this solution can lock the air circulation in the user's seating area and can adapt to users of different body shapes; and the cost is low, the structure is simple, and the riding comfort of the seat is not affected. In addition, this solution can continuously monitor the temperature of the seat and the interior of the vehicle and select a suitable ventilation mode. Good ventilation effect and suitable temperature experience of the seat are guaranteed.

The utility model relates to a temperature control type spray booth for a pressure container, which comprises a booth body, a pressure equalizing chamber positioned right above the pressure container, an air supply outlet communicated with the pressure equalizing chamber, and an exhaust outlet positioned below the side edge of the pressure container, the air supply outlet is connected with an air supply system through an air supply pipe, and a temperature control device is arranged in the air supply system. And the exhaust outlet is connected with a paint mist filtering exhaust device. The air supply system is mainly used for supplying fresh air and maintaining constant temperature and humidity to meet paint spraying requirements under heat exchange of the temperature control device, and indoor laminar flow air supply is achieved by arranging the positions of the pressure equalizing chamber and the paint mist filtering exhaust device and adopting a ventilation mode of upper supply and lower suction. And meanwhile, the pressure equalizing chamber is arranged, so that uniform transmission of air speed is ensured, the requirements of indoor air speed and wind field uniformity can be met, paint mist generated in the paint spraying process can be captured in time, and the operation environment is improved.

The invention relates to a subway tunnel hydrogen energy vehicle high-pressure hydrogen leakage monitoring and hydrogen discharging method. The method comprises the steps that hydrogen sensors are arranged on a subway tunnel ceiling at preset intervals; the hydrogen concentration measured by each hydrogen sensor is obtained, and the hydrogen sensor with the hydrogen concentration larger than or equal to a first preset threshold value is marked as a target hydrogen sensor; determining a tunnel where the target hydrogen sensor is located, marking the tunnel as a leakage tunnel, and determining a tunnel type of the leakage tunnel; hydrogen storage pressure of a high-pressure hydrogen storage tank of the hydrogen energy vehicle is obtained, and corresponding ventilation information is obtained in a preset database according to the tunnel type and the hydrogen storage pressure; and based on the obtained ventilation information, the leakage tunnel is controlled to conduct ventilation in the obtained ventilation mode, and the ventilation wind speed is controlled to be the basic wind speed till the hydrogen concentration is reduced to be below a preset safety threshold value. Hydrogen is effectively prevented from being accumulated on the tunnel vault to form explosive mixed cloud, the explosion risk is greatly reduced, and operation safety of the underground space is guaranteed.

The invention relates to an integrated multilayer breeding ventilation device capable of switching ventilation modes, and belongs to the field of breeding ventilation equipment.The integrated multilayer breeding ventilation device comprises an air inlet mechanism and / or an air outlet mechanism, the air inlet mechanism comprises an air inlet duct, and an air inlet hole is formed in the bottom of the air inlet duct; an air adjusting mechanism is arranged on the open side of the air inlet duct; the air outlet mechanism comprises an air outlet duct; an air outlet hole is formed in the top of the air outlet duct; the air outlet side stand column is arranged in the length direction of the interior of the air outlet duct and comprises an airflow circulating mechanism. Through integrated integration of a physical structure and intelligent circulation design of airflow organization, the problems of high cost and difficult maintenance caused by split equipment are directly solved, the pain point of traditional ventilation energy waste is effectively overcome through waste gas energy internal circulation, meanwhile, the flexibility of a ventilation mode is improved, and the ventilation efficiency is improved. And the novel design has economical efficiency, energy-saving performance and high efficiency.

The present invention provides a circulating ventilation and cooling system and construction method for the shield tunnel construction operation section, comprising: an air supply system for conveying external air to the interior of the shield tunnel; a secondary air supply system for cooling the air conveyed to the interior of the shield tunnel by the air supply system, and then pressing the cooled air to the front end of the shield tunnel construction; a control system for controlling the operation of the secondary air supply system to adjust the shield construction environment temperature and the wind speed at the operating end to ensure a comfortable shield construction environment; an exhaust system for removing dust from the hot and humid polluted gas inside the shield tunnel, and discharging the dust-removed polluted gas to the outside of the shield tunnel. The present invention combines pressure-in and exhaust-type ventilation, while taking into account the cooling and dust removal effects, effectively solving the ventilation and cooling problems inside the shield tunnel, avoiding slow shield tunneling due to poor exhaust and excessive temperature in the tunnel, thereby improving the existing ventilation method and the construction environment.

The invention provides a temperature control method and device, electronic equipment and a storage medium, and relates to the technical field of aircraft air conditioners, the method comprises the steps that a set of input parameters are obtained, the set of input parameters comprise the environment temperature, a temperature setting signal and a defrosting demand signal, the defrosting demand signal is used for representing whether defrosting needs to be started or not, and the set of input parameters comprise the environment temperature and the temperature setting signal; the temperature setting signal comprises a signal of functional gears, and the functional gears comprise a refrigeration gear, a middle gear and a heating gear; a corresponding target operation mode is automatically selected according to the set of input parameters, wherein the target operation mode at least comprises a refrigeration mode, a heat pump heating mode, a ventilation mode and a defrosting mode; the aircraft air conditioning system is controlled according to the target operation mode to adjust the temperature in the aircraft cabin, and the heat pump air conditioning system comprises a compressor, an indoor heat exchanger, an outdoor heat exchanger, an expansion valve and a four-way valve. According to the technical scheme, the reliability of the air conditioning system of the aircraft is improved.

The invention relates to a ventilation system, device and method for achieving a cardiopulmonary interaction evaluation function, and the system comprises an initial selection module which is used for selecting a standard ventilation mode as an initial ventilation mode; the event switching module is used for selecting one ventilation event as a target ventilation event; and the ventilation control module is used for performing ventilation control according to the ventilation parameter standard value of the initial ventilation mode, switching the ventilation mode between the initial ventilation mode and the corresponding standard ventilation mode according to the target ventilation event, and performing ventilation control according to the ventilation parameter event value of the switched standard ventilation mode. Under the triggering of the ventilation event, the ventilation mode is automatically adjusted, and the ventilation parameters are loaded, so that the burden of repeated manual adjustment, measurement and judgment by a doctor according to the breathing and ventilation states of a patient is reduced, the working efficiency of medical personnel is improved, nonstandard deviation caused by manual intervention of different personnel is reduced, and the medical personnel experience is improved. And diversified and personalized cyclic monitoring and evaluation requirements are fully met.

In this heat exchange-type ventilation device, an air supply air passage is divided into a common air supply air passage and a non-common air supply air passage. An exhaust air passage is divided into a common exhaust air passage and a non-common exhaust air passage. The position of the common air supply air passage and the position of the common exhaust air passage relative to a heat exchange device are shifted from each other. During operation in the normal ventilation mode, a control device closes the non-common air supply air passage by an air supply air passage switching damper, and closes the non-common exhaust air passage by an exhaust air passage switching damper.

The multi-mode adjusting constant-temperature and constant-humidity silo comprises a silo body, an inner barrel, an inner barrel water cooling assembly, a silo bottom air cooling assembly and a monitoring control assembly, the inner barrel is concentrically fixed in an inner cavity of the silo body, and a material distributing part is arranged at the top end of the inner barrel and located under a feeding port. The inner cylinder water cooling assembly is fully arranged on the inner side wall of the inner cylinder and used for conducting water cooling on the periphery of the inner cylinder. The silo bottom air cooling assembly is fixedly arranged in the silo body at the bottom end of the inner barrel, and cooling air is introduced into the inner barrel and finally discharged from the silo top ventilation holes; the monitoring control assembly monitors the temperature and humidity of the inner cylinder and the inner wall of the silo body in real time and controls the inner cylinder water cooling assembly and the silo bottom air cooling assembly to work cooperatively. According to the invention, a mixed cooling mode of'water cooling + air cooling 'and'bin wall + bin interior' is adopted, so that the defects of low efficiency and large resistance of a traditional air duct ventilation mode are avoided, and digital-intelligent and efficient constant-temperature and constant-humidity control is realized.

The invention provides a partition carbonization control method for solid waste-based muck carbonization piles and a three-dimensional breathable network, the method is based on the three-dimensional breathable network, the three-dimensional breathable network is provided with multiple layers of gas diffusion channels capable of being independently controlled, and the method comprises the following steps: S1, investigating, leveling and removing field sundries; s2, a pile hole with the specified diameter and depth is formed in the site; s3, hoisting and sinking the three-dimensional breathable network to a designed elevation position in the pile hole; s4, solid waste-based slurry is poured into the pile hole to a preset height; and S5, a gas path controller is arranged between the top end of each gas diffusion channel and the gas source, and the control unit sequentially starts the gas path controllers of the gas diffusion channels according to a preset time sequence, so that the carbon dioxide gas is conveyed to different areas of the pile body at different times, and time-sharing and zoning carbonization is conducted on the pile body. The problems of non-uniform gas distribution, low carbonization efficiency and the like in a traditional single-pipe ventilation mode are solved, and the carbonization uniformity and the construction efficiency of the pile body are remarkably improved.

The utility model relates to the technical field of medical facilities, in particular to a drainage and ventilation system for a medical facility, which comprises a drainage vertical pipe, an exhaust vertical pipe, a top-extending ventilation pipe and a first air sterilizer, the exhaust vertical pipe is communicated with the drainage vertical pipe end to end; the top-extending ventilation pipe is connected to the other end, communicated with the drainage vertical pipe, of the exhaust vertical pipe, and the top-extending ventilation pipe can be switched between a communication state and a disconnection state; the first air disinfector is arranged at the end, close to the top-extending ventilation pipe, of the exhaust vertical pipe. According to the drainage and ventilation system for the medical facility, a self-circulation ventilation mode between epidemic situations or a top-extending ventilation mode after the epidemic situations can be switched, in the self-circulation ventilation mode, exhausted air can be disinfected and killed repeatedly through the first air disinfector, the pathogen removal rate is high, and the ventilation effect is good. And the risks of air pollution and epidemic spread are reduced.

The invention belongs to the technical field of gas control. In order to solve the problem of gas overrun existing in an existing ventilation mode, the ventilation system and method for preventing gas overrun of the stope face of the high outburst mine are provided, the system comprises the stope face and an adjacent face which are adjacently arranged, and the stope face and the adjacent face both adopt a U-shaped ventilation layout and are each provided with two crossheading roadways; the crossheading bottom drainage roadways are arranged in lower rock stratums of two adjacent crossheading roadways and are used for gas pre-drainage and air return; the ventilation hole group is arranged in a crossheading roadway of an adjacent surface and is communicated with a crossheading bottom suction roadway; the ventilation transverse section group is arranged between two adjacent crossheading roadways, so that return air of a stoping face is discharged through two paths of the ventilation transverse section group, one path enters the crossheading roadway of the adjacent face to form a main return air channel, and the other path enters the crossheading bottom suction roadway through the ventilation hole group to form an auxiliary return air channel. According to the system, under the condition that no roadway needs to be added, fresh air flow supply of the stoping face is increased, and the gas control pressure of single-roadway ventilation of the return airway is decomposed.

The invention relates to the technical field of mine ventilation, and discloses an intelligent magnetic suspension ventilation system for improving air under a mine, the intelligent magnetic suspension ventilation system comprises a magnetic suspension axial flow fan and an air outlet pipeline, a plurality of air outlet plates are equidistantly mounted at a ventilation opening in one side of the air outlet pipeline, and each air outlet plate is hinged to the air outlet pipeline through a connecting rotating rod; and the connecting rotating rod is sleeved with a torsional spring. According to the scheme, efficient ventilation of a magnetic suspension draught fan and a pure mechanical fire prevention and control system are innovatively and deeply fused, the system ingeniously utilizes the installation kinetic energy, air pressure transmission and material thermosensitive characteristics, and intelligent switching between an efficient ventilation mode and a fireproof sealing mode can be automatically completed according to the environment state under the condition that no external energy is needed. According to the system, the mine ventilation requirement is guaranteed in daily operation, a reliable fireproof barrier can be automatically constructed when a fire breaks out, unification of operation efficiency and intrinsic safety is achieved, and a practical and effective technical guarantee is provided for improving the mine safety production level.

The invention discloses a non-invasive sleep monitoring and intervening system, which constructs a thoracic and abdominal ventilation displacement model through human body micro-motion phase calculation of millimeter wave radar, and realizes continuous and non-contact monitoring of respiratory rhythm, ventilation change and body motion state. The system further utilizes a time-frequency fusion feature and trend analysis method to identify and predict sleep disorder events such as snoring, apnea and hypopnea in real time, and generates acoustic disturbance signals meeting sound pressure and frequency constraints before and after the events are formed, so that the ventilation mode or sleeping posture of a user is promoted to be controllably and finely adjusted on the premise that the user is not awakened, and the sleep disorder events are prevented from being disturbed. Therefore, the abnormal event duration is shortened and the sleep quality is improved. The method is suitable for sleep monitoring equipment, bedside lamps, intelligent sound boxes or desktop type health equipment, and algorithms and intervention strategies can be further optimized through software upgrading.