22 results about "Ventilation mode" patented technology

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 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 application discloses a tunnel construction ventilation method in a plateau area, comprising the following steps: S1, in the horizontal hole construction stage, a first fan assembly is arranged at the horizontal hole opening, air is supplied to the working face of the horizontal hole and the horizontal hole branch hole through the first air pipe assembly by using the pressure-in ventilation mode until the construction of the horizontal hole and the horizontal hole branch hole are completed; S2, a second fan assembly is arranged at the horizontal hole branch hole opening, air is supplied to the working face of the left line of the main hole and the right line of the main hole through the second air pipe assembly by using the pressure-in ventilation mode; and S3, a third fan assembly is arranged at a position close to the second auxiliary hole in the right line of the main hole, air is supplied to the working face of the left line of the main hole and the right line of the main hole by using the roadway ventilation mode. Based on the construction characteristics of the tunnel, the construction ventilation system and the ventilation method are optimized according to different construction stages, so that the problem that the ventilation effect in the tunnel is difficult to guarantee in the tunnel construction in the plateau area can be solved well.

An HVAC system includes an evaporator coil, a compressor, and a sensor housing positioned upstream of the evaporator coil. The sensor housing contains a gas sensor configured to measure a concentration of total volatile organic compounds (TVOCs) in an airflow. A controller receives TVOC concentration measurements and operates the HVAC system in a normal operating mode that conditions air for a space. When the measured TVOC concentration exceeds a first threshold, the controller transitions the HVAC system to a ventilation mode in which air is introduced into and discharged from the system to reduce contaminant levels. If the TVOC concentration exceeds a second, higher threshold, the controller generates a notification indicating that an external source of TVOCs may be present. The system enables automated monitoring of indoor air quality and adaptive HVAC operation based on detected contaminant levels.

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 an oxygen-generating component and an air conditioner. The oxygen-generating component includes: a shell structure having an exhaust port, an oxygen-generating inlet, and a ventilation inlet; the exhaust port is connected to the outside, and both the oxygen-generating inlet and the ventilation inlet are connected to the indoor unit; an oxygen-enriched membrane structure disposed within a cavity of the shell structure; and a fan blade rotatably disposed within the cavity of the shell structure. The oxygen-generating component has an oxygen-generating mode and a ventilation mode. In the oxygen-generating mode, the ventilation inlet is closed, the oxygen-enriched membrane structure operates, and the intake air undergoes oxygen and nitrogen separation through the oxygen-enriched membrane structure. Nitrogen is output to the outside through the exhaust port, while oxygen is delivered to the indoor unit. In the ventilation mode, the ventilation inlet is open, the oxygen-enriched membrane structure stops operating, and the intake air is output to the outside through the exhaust port. This solution integrates oxygen generation and ventilation functions in a space-constrained air conditioner, avoiding the increased structural complexity caused by separate oxygen-generating and ventilation structures, and reducing the energy consumption of the air conditioner.

This invention belongs to the field of building technology, and particularly relates to an optimized method for green building construction. The method includes: setting up a sandwich layer between the exterior wall and curtain wall panels of a building; ventilating the sandwich layer through a ventilation system; the ventilation system having a ventilation mode and a cooling mode; automatically activating the cooling mode in summer, using soil to cool the air before introducing it into the sandwich layer to lower the building temperature; and automatically switching to ventilation mode in other seasons. This invention enables automatic switching, reducing energy consumption while extending the building's lifespan.

This invention discloses a ventilation method for simultaneous excavation of multiple tunnel faces in an inclined shaft, pilot tunnel, and main tunnel. The method comprises three parallel tunnels: a left main tunnel, a parallel pilot tunnel, and a right main tunnel. Initially, each of the left main tunnel, the parallel pilot tunnel, and the right main tunnel employs single-heading excavation. A first compressed air device enables initial forced ventilation at the tunnel faces. As excavation progresses across multiple tunnel faces, a second, third, fourth, and fifth compressed air device are used to achieve stable ventilation across all three tunnel faces. During this process, the initial single-heading forced ventilation mode is transformed into a single-heading forced ventilation combined with a tunnel-like ventilation mode. This allows the ventilation fans to be installed closer to the tunnel faces of the left main tunnel, the right main tunnel, and the parallel pilot tunnel, and significantly reduces the length of the ventilation ducts, minimizing airflow loss due to resistance and greatly improving the efficiency of tunnel construction ventilation.

This invention discloses a method for estimating airway resistance and compliance. The method includes: acquiring multiple sets of sampled data and acquiring a preset discrete nonlinear airway resistance model. Each set of sampled data includes airway pressure, total flow rate, and tidal volume sampled at a single sampling time. Based on the multiple sets of sampled data and a pre-established parameter update model, preset parameters in the discrete nonlinear airway resistance model are solved to obtain parameter values. Based on the parameter values ​​and the substitution relationships between the preset parameters and linear airway resistance, nonlinear airway resistance, and lung compliance, linear airway resistance, nonlinear airway resistance, and lung compliance are solved. The linear airway resistance and lung compliance are used to effectively control the ventilation modes of anesthesia machines and ventilators to suit various usage situations for different users. Furthermore, devices, equipment, and media for estimating airway resistance and compliance are also proposed.

The application discloses a ventilation mode control method and a breathing machine in the technical field of respiratory medical equipment, reconstructs pressure distribution in a breathing cycle, adopts a control strategy that inspiratory airway positive pressure is lower than expiratory airway positive pressure, actively reduces pressure to a lower release level to reduce inspiratory load when detecting patient inspiration, and smoothly restores pressure to a higher treatment pressure at the end of expiration to establish support for the next inspiration cycle. The method is realized in the breathing machine through cooperative control of a sensing unit, a processing unit and a pressure generating unit, solves the technical problem that the existing continuous positive airway pressure mode maintains constant high pressure in the whole breathing cycle, causes heavy load and poor comfort during patient inspiration and most of the expiration stage, and improves the overall comfort and long-term use compliance of treatment while ensuring equivalent airway support and treatment effect of the traditional mode.

A seat with zoned ventilation includes seat foam, an A-side fan, an A-side ventilation medium, a B-side fan, and another B-side ventilation medium. The A-side of the seat foam has N ventilation zones, each with an inner groove. A wire-passing hole is located at the bottom of the inner groove. The A-side fan is positioned within the inner groove of the seat foam. The A-side ventilation medium covers the A-side foam and serves to fix the A-side fan while simultaneously distributing the airflow from the A-side fan evenly within the ventilation zones. The B-side fan is connected to the B-side ventilation medium and then fixed to the B-side of the seat foam, directing airflow through the B-side ventilation medium into the ventilation holes on the A-side of the seat foam. This seat miniaturizes and zones the fans, solving the problem of insufficient space for electrical components in the seat. It also allows for different combinations of ventilation methods, such as localized ventilation and zoned blowing / suction, as needed.

This invention discloses a PTC regeneration bypass control method for window-type oxygen-enriched membrane fresh air systems, belonging to the field of air handling equipment control technology. The method includes: real-time monitoring of the oxygen-enriched membrane component performance degradation rate, dew point of the drying unit, indoor carbon dioxide concentration, and indoor-outdoor temperature difference; comprehensively determining the oxygen-enriched membrane performance degradation and the drying unit regeneration needs, and calculating and selecting the optimal time point with the least impact on the indoor environment to initiate regeneration, taking into account indoor air quality and heat load conditions; first switching to bypass ventilation mode to maintain basic air exchange, while simultaneously regenerating the drying unit and independently expelling moisture outdoors; and smoothly switching back to the original operating mode after regeneration is complete. This method solves the problems of improper regeneration timing, impact on indoor ventilation and comfort during regeneration, and high regeneration energy consumption in existing technologies, achieving efficient, energy-saving, and intelligent regeneration and maintenance of core consumables while ensuring continuous indoor air quality.

The utility model provides a kind of mushroom house ventilation system, it is related to mushroom house construction technical field, including mushroom house, partition structure and ventilation mechanism, partition structure is along height direction and the inside passage of mushroom house is divided into ventilation interlayer and clean corridor, ventilation interlayer is used to connect outside space, and air outlet is equipped on partition structure;Ventilation mechanism includes pressurized air supply structure, conveying structure, pressure relief structure and discharge structure, pressurized air supply structure is used to send air in ventilation interlayer to clean corridor, conveying structure is used to send air in clean corridor to each subroom.The utility model mushroom house ventilation system overcomes the defect that pipeline is complex in existing ventilation mode, air volume is not balanced and environmental parameter is difficult to accurately control, realizes the accurate control of mushroom house air volume, and then realizes the efficient, accurate control to temperature, humidity, oxygen content and cleanliness in mushroom house Environmental parameter, to provide more stable, suitable environmental condition for the healthy growth of mushroom.

An outside air sensor 60 measures the outside air temperature in an outside air chamber 22, and outputs the measured outside air temperature to a control unit 70. A return air sensor 62 measures the return air temperature of the return air sensor 62, and outputs the measured return air temperature to the control unit 70. In a heat-exchange ventilation mode, the control unit 70 opens an outside air damper 40 and an exhaust damper 42 and closes a central damper 44. In an internal circulation mode, the control unit 70 closes the outside air damper 40 and the exhaust damper 42 and opens the central damper 44. In the internal circulation mode, the control unit 70 detects an abnormality or failure in any of the outside air damper 40, the exhaust damper 42, and the central damper 44 on the basis of the outside air temperature and the return air temperature.

This invention relates to a roof ventilation and smoke extraction system with intelligent linkage control and adaptive adjustment functions, belonging to the field of building ventilation and smoke extraction technology. The system includes a roof skylight array, smoke extraction fan units, a multi-source sensor network, and an edge computing controller. The edge computing controller incorporates a pattern recognition module, a linkage control module, an adaptive adjustment module, and a zone scheduling module. In fire-fighting smoke extraction mode, the linkage control module dynamically calculates the optimal opening sequence of each smoke extraction skylight and the optimal speed sequence of each smoke extraction fan based on the spatial distribution of smoke concentration and temperature, ensuring coordinated matching between skylight opening and fan speed. In daily ventilation mode, the adaptive adjustment module uses a predictive control algorithm to dynamically adjust the equipment's operating status. This invention achieves integrated intelligent management of daily ventilation and fire-fighting smoke extraction through deep linkage control, intelligent pattern recognition, and zone adaptive scheduling, improving smoke extraction efficiency by more than 30% and significantly reducing energy consumption.

The application relates to the field of automobile technology, in particular to a self-cleaning method and device of an automobile air conditioner, wherein the method comprises the following steps: after entering an air conditioner self-cleaning mode based on an air conditioner self-cleaning instruction, controlling the automobile air conditioner to enter a frosting mode and continuously operate for a first preset duration; after continuously operating for the first preset duration, controlling the automobile air conditioner to enter a defrosting mode and continuously operate for a second preset duration; after continuously operating for the second preset duration, controlling the automobile air conditioner to enter a ventilation mode and continuously operate for a third preset duration; and until receiving an end instruction in the automobile air conditioner or operating for the third preset duration, exiting the air conditioner self-cleaning mode. According to the application, the self-cleaning of the automobile air conditioner can be realized according to the user instruction based on the frosting, defrosting and ventilation modes of the automobile air conditioner, so that the cost of air conditioner cleaning is reduced, the equipment safety of the air conditioner is guaranteed, the self-cleaning efficiency of the automobile air conditioner is improved, and the application is more simple, practical and convenient.

This application provides an animal ventilation device, including a breathing circuit, an anesthesia dispenser, a controller, and a control receiver. The control receiver outputs the received ventilation mode and / or ventilation parameters to the controller. The breathing circuit includes an inspiratory drive module, an inspiratory branch, an expiratory branch, and a breathing interface. The two ends of the inspiratory branch are connected to the inspiratory drive module and the breathing interface, respectively, and the expiratory branch discharges the received exhaled gas. The inspiratory branch has a first port and a second port. The anesthesia dispenser includes an inlet interface and an outlet interface. In the respiratory support mode, the first port and the second port of the inspiratory branch are connected, and the inspiratory drive module outputs an inspiratory auxiliary airflow through the inspiratory branch and the breathing interface. In the anesthesia mode, the inlet interface and the outlet interface of the anesthesia dispenser are connected to the first port and the second port in the inspiratory branch, respectively, and the inspiratory drive module and the anesthesia dispenser output an inspiratory auxiliary airflow containing anesthetic through the inspiratory branch and the breathing interface.

This invention belongs to the field of ventilation technology for tunnel and underground engineering construction, and specifically relates to a centralized ventilation chamber structure and ventilation method for multi-face construction of twin-track tunnels. The ventilation chamber structure includes a ventilation chamber space located within the main line away from the inclined shaft. A first and second enclosed wall are respectively installed on the front and rear sides of the ventilation chamber space. The drainage ditch inside the ventilation chamber space is leveled by pouring concrete, and the cross passage is fully sealed with color steel plates. The ventilation chamber has an air inlet and multiple air outlets, which are respectively connected to the main air duct of the inclined shaft and the branch air ducts leading to each working face. A variable frequency relay fan is installed at the air outlet and linked to an intelligent ventilation system. This invention achieves a centralized ventilation mode of "centralized air supply and secondary distribution," simplifying the layout of air ducts inside the tunnel, reducing construction interference and ventilation energy consumption, and improving air supply efficiency and smoke extraction capacity. Simultaneously, the modular structure allows for quick assembly and disassembly, resulting in low safety risks, and it is suitable for simultaneous construction of multi-face tunnels in twin-track tunnels.

The application discloses an asphalt mixture stockyard air duct airflow optimization control method based on temperature and humidity monitoring, relates to the technical field of air duct control, and comprises the following steps: calculating the saturated water vapor pressure difference of the current atmosphere according to the environmental temperature and humidity, constructing a multidimensional decision matrix by using the evaporation dynamics principle, constructing a local airflow virtual resistance field model of the asphalt mixture stockyard based on three-dimensional geometric data, performing rapid airflow path deduction, obtaining a virtual resistance field deduction result, determining the required target ventilation mode and ventilation intensity by using the multidimensional decision matrix according to the saturated water vapor pressure difference, wind speed and direction data, average moisture content of the stockpile and the virtual resistance field deduction result, and applying the target ventilation mode and ventilation intensity to the asphalt mixture stockyard air duct after the target ventilation mode and ventilation intensity are converted into a control instruction set. The application achieves the intelligent, energy-saving and efficient stockyard environment regulation and control target through the air duct airflow control method.

This invention discloses a tunnel ventilation fan power generation system and control method, including a tunnel ventilation system, a control system, a mode switching system, and an energy storage system. The mode switching system monitors the operating status of the tunnel ventilation system and controls it to switch between ventilation mode and power generation mode. In power generation mode, temperature sensors collect temperature information inside and outside the tunnel, and the appropriate power generation mode is selected based on the tunnel's location and the temperature at the power generation mode switching node simulated by a computer. Utilizing the idle time when the tunnel fan is not running, piston air drives the fan blades to generate electricity. This electricity is then converted and stored in an energy storage device to power loads such as station lighting. Simultaneously, the power generation mode is adjusted based on tunnel temperature and the region where the tunnel is located, balancing the relationship between tunnel temperature requirements and power generation efficiency, making the use of piston air more efficient and achieving energy recovery.