606 results about "Ventilation control" patented technology

The invention is directed to a ventilation control system for controlling the ventilation of a patient. The ventilation control system utilizes a user-friendly user interface for the display of patient data and ventilator status. The user interface includes a graphic representation of a breath cycle that displays the breath cycle currently being ventilated, and is also responsive to changes in ventilation settings to assist the user in evaluation the effect of those changes on the ventilator strategy before the changes are implemented.

A ventilation system for a building in some cases includes a main HVAC blower for moving temperature-conditioned air through the building plus a smaller ventilation blower for providing fresh air. A controller regulates the ventilation blower's speed to provide a target ventilation flow rate regardless of changes in the pressure differential between the indoor and outdoor air. To ensure that the target rate is appropriate for a particular building, the target flow rate is determined based on a ventilation setting that reflects a specified number of bedrooms and a specified amount of floor space of the building.

Improvements in a smoke alarm are presented. The multifunction smoke alarm unit includes separate sensors within a single enclosure for detecting smoke and occupancy, sounding a distinctive audible alarm when combustion is detected or the presence of a person within the area of the sensor. The multifunction smoke alarm can replace an existing single function smoke alarm. Multiple multifunction smoke alarms are networkable together for various purposes. Additional features include intruder alarm, visitor annunciator, integrated illumination source, external lighting control, HVAC system control, ceiling fan control, ventilation control, and / or fire safety system control. The proposed multifunction smoke alarm provides much-needed improvements for security, energy saving, safety, and user convenience without the need for completely separate systems for each purpose.

A method of selecting a ventilation control strategy from among a plurality of ventilation control strategies. The method comprises the steps of: determining if a CO2 signal is present and valid; selecting a CO2 based ventilation control strategy if the CO2 signal is present and valid; selecting a second ventilation control strategy if the CO2 signal is not present or is invalid; and operating using the selected strategy. The selection step occurs in a zone controller.

An arrangement for use in an occupancy-based ventilation system includes a plurality of CO2 sensors and a processing circuit. The plurality of CO2 sensors are disbursed throughout a plurality of spaces in a building. The processing circuit is operably coupled to receive information representative of CO2 measurements generated by the plurality of CO2 sensors. The processing circuit is operable to determine a value corresponding to occupancy, based on information from the CO2 sensors, and to control the flow of fresh supply air into the building ventilation system based on the determined value.

A method of selecting a ventilation control strategy from among a plurality of ventilation control strategies. The method comprises the steps of: determining if a CO2 signal is present and valid; selecting a CO2 based ventilation control strategy if the CO2 signal is present and valid; selecting a second ventilation control strategy if the CO2 signal is not present or is invalid; and operating using the selected strategy. The selection step occurs in a zone controller.

A method provides a ventilation control compliant with an adopted ventilation standard for efficient energy usage and conservation of energy resources. The method includes operating a home energy system to generate solar energy within a daily active period and draw fresh air from an ambient region, setting a daily ventilation period as a fractional period of a day, the ventilation period being coincident with the active period during a heating period for the home or a time period after the active period during a cooling period for the home, determining a target volume, determining a flow rate for delivering the fresh air during the ventilation period, performing ventilation in the ventilation period to deliver the fresh air into the home using the flow rate, and monitoring an accumulated total ventilation volume of the delivered fresh air until the accumulated total ventilation volume is within a vicinity of a target volume.

The invention is directed to a ventilation control system for controlling the ventilation of a patient. The ventilation control system utilizes a user-friendly user interface for the display of patient data and ventilator status. The user interface includes a graphic representation of a breath cycle that displays the breath cycle currently being ventilated, and is also responsive to changes in ventilation settings to assist the user in evaluation the effect of those changes on the ventilator strategy before the changes are implemented.

The invention discloses an operation state control decision making method of a mine ventilation system, and belongs to a mine ventilation control decision making method. The method comprises the following steps: (1) establishing or updating a current mine ventilation system model; (2) acquiring and updating ventilation system parameters in real time; (3) inspecting the rationality of the operation state of the ventilation system; (4) adjusting and solving ventilation network air volume in the case of a given mine total air volume when the operation state of the ventilation system is irrational, and adjusting and optimally solving the ventilation network air volume if a feasible solution is not available yet; (5) determining a fan matching working condition, performing air volume adjustment and solving for gradually expanding natural air distribution on an air network according to a maximum air pressure characteristic curve allowed by the fan, and finally determining an optimal executable scheme for air volume adjustment of the mine ventilation system. A mass flow and air density double-layer iteration method is adopted in the air volume adjustment and solving, and a sensor for monitoring underground air density can be saved. Technical support is provided for keeping rational, stable, reliable and high-efficiency operation of the mine ventilation system for a long time.

Disclosed is an air conditioner provided with: a temperature distribution detection means (12) for detecting the temperature distribution of a room (1); a coolant leak detection means (13) for detecting coolant leaks; a ventilation control means (17c) for controlling a ventilation means (14); and an airflow direction control means (17d) for controlling the airflow direction of the ventilation means (14). When the coolant leak detection means (13) detects a coolant leak, the ventilation control means (17c) and the airflow direction control means (17d) disperse coolant in a direction different from that of a heat source device (4) or an occupant (3) etc. detected by the temperature distribution detection means (12), and safety is thereby improved.

The invention discloses a serviced apartment concentrated oil-smoke emission control system comprising household smoke exhaust ventilators in households. Exhaust pipes of the household smoke exhaust ventilators are communicated with a common flue. An output of the common flue is provided with an oil-smoke processing device. The serviced apartment concentrated oil-smoke emission control system is characterized in that an intelligent ventilation control unit is arranged between the oil-smoke processing device and the common flue. The intelligent ventilation control unit is used for detecting parameters of oil-smoke entering the oil-smoke processing device and comparing the detected parameters of oil-smoke with set values. The oil-smoke processing device is controlled and operation states of the oil-smoke processing device are adjusted according to comparison results. The invention also relates to a control method for the above serviced apartment concentrated oil-smoke emission control system. The oil-smoke is emitted in a frequency conversion mode according to needs, thereby saving energy utilization.

The invention relates to an integrated methane dry fermentation device and belongs to the field of energy conservation. The device consists of two parts, namely an anaerobic fermentation tank 9 of an inner cylinder and a stack retting tank 5 of an outer cylinder; and the anaerobic fermentation tank 9 of the inner cylinder is wrapped by the stack retting tank 5 of the outer cylinder, wherein the stack retting tank 5 of the outer cylinder consists of an outer cylinder feed port 10, an outer cylinder discharge port 16, a heat insulating layer 15, a thermal reflecting film 26, an outer cylinder filter screen 18, an outer cylinder fermenting liquid outlet 25, a liquid storage box 22, an air draft cover 27, an air cap 3, an air guide pipeline 4, a gravel stratum 17 and a net 11; and the anaerobic fermentation tank 9 of the inner cylinder consists of an inner cylinder feed port 6, an inner cylinder discharge port 19, an air outlet 8, a temperature sensor 12, an inner cylinder filter screen 20, an inner cylinder fermenting liquid outlet 21, a temperature controller 13, a liquid storage box 22, an electric heater 24, a circulating water pump 14, a liquid storage pipeline 1, a one way valve 2 and a nozzle 7. The device strengthens a ventilation control system, a liquid stream stirring system and a temperature controlling system of the methane dry fermentation device, has the advantages of reasonable structure, high processing efficiency, energy conservation, convenient subsequent processing, no environmental pollution and the like and is in particular suitable for the methane fermentation of a low-temperature region.

A ventilation control apparatus for a supercharged internal combustion engine that can perform crankcase ventilation favorably. A system includes a supercharging system, an EGR mechanism, and a blow-by gas reflux mechanism. The EGR mechanism includes an ejector between an EGR valve and an EGR cooler. A suction port is connected to a cylinder head cover via a PCV passage. A nozzle portion is connected to an EGR passage on the EGR cooler side. A diffuser portion is connected to the EGR passage on the EGR valve side. By making EGR gas flow through the EGR passage, gas in the crankcase can be drawn through the PCV passage to thereby be burned, together with the EGR gas or fresh air, in an engine.

The present invention discloses a fire experiment device based on a city underground comprehensive pipe rack. The pipe rack comprises a left side pipe rack and a right side pipe rack; a water supply pipeline is arranged on the ground of the left side pipe rack through a pipeline support; a high electric cable and a weak electric cable are respectively arranged at two sides of the left side pipe rack through an insulation support; a camera and an illumination lamp are installed at the top of the left side pipe rack; a drainage ditch is arranged at the bottom of the left side pipe rack; a gas pipeline is arranged on the ground of the right side pipe rack through the pipeline support; a camera and an illumination lamp are installed at the top of the right side pipe rack; and a drainage ditch is arranged at the bottom of the right side pipe rack. The fire experiment device comprises a transverse ventilation control system, a simulation fire source system, a fire detection system, a water mist fire extinguishing system and a water spray fire extinguishing system. The fire experiment device based on a city underground comprehensive pipe rack can simulate the city underground comprehensive pipe rack fire experiment so as to provide scientific reference for underground comprehensive pipe rack control and optimization, power-on electric wire propagating, fire detection and fire extinguishing.

The invention discloses a negative pressure ward in combination use in ordinary times and epidemic times. The negative pressure ward comprises a medical care corridor, ward bodies, a patient corridorand buffer rooms, wherein a power distribution type ventilation system comprises a main ventilating machine, ventilating control modules, a main exhaust blower, exhaust air control modules, differential pressure sensors used for monitoring the differential pressure between the ward body and the corresponding buffer room and air quality sensors used for monitoring the air quality conditions in theward bodies, meanwhile, the invention further discloses a ventilation control method of the negative pressure ward in combination use in the ordinary times and the epidemic times, when the ward bodiesare used as the negative pressure ward bodies, the exhaust air control modules can adjust the exhaust air rate in a linkage mode by combining feedback signals of the differential pressure sensors, and it is ensured that the designed differential pressure can immediately return to normal after being damaged to prevent cross infection, when the ward bodies are used as the common ward bodies, the ventilating control modules can adjust the ventilating volume in a linkage mode by combining feedback signals of the air quality sensors, then the exhaust air control modules are linked to adjust the exhaust air volume, and it can be guaranteed that energy consumption is reduced when the ward bodies are used as the common ward bodies.

Methods and systems that incorporate automated or manual control of ventilation and kinetic rotation therapy are provided. In one exemplary embodiment, an artificial ventilator is used to artificially ventilate one of the patient's lungs, the status of the artificially ventilated lung is determined by measuring one or more ventilation status measures, and one or more of the ventilation status measures is used to provide feedback for controlling the positioning of the patient. In some exemplary embodiments, the feedback is used for automated control of the positioning of the patient, while in other exemplary embodiments, the feedback is used as guidance for manual control of the positioning of the patient.

A ventilation control apparatus of an indoor ventilation system including an intake device configured to take outside air into an indoor space, the intake device capable of changing an intake amount of the outside air, the ventilation control apparatus includes: a people count detection unit configured to determine the number of people who are present in the indoor space, to be outputted as people count information; and a control unit configured to obtain the people count information and control the intake device so that the more the number of people indicated by the people count information is increased, the greater an amount of the outside air to be taken in becomes.

The invention discloses a method for increasing the oestrus breeding rate of replacement gilts. The method includes the steps of breeding gilt selection, nutrient matching, feed mildewing, illumination control, temperature, humidity and ventilation control, and replacement gilt raising. In the method, vaccine immunity and drug health care should be performed; green fodder should be provided; driving movement, swinery changing, swinery combination and vehicle carrying movement should be performed; oestrus inducing should be performed; recording and short-time high-quality raising should be performed; breeding age in days and weight should be reasonable; concentrated oestrus breeding should be performed. Hormone oestrus promotion, Chinese herbal medicine oestrus promotion, starvation treatment and brown sugar oestrus promotion are performed on the anestrus replacement gilts. According to the invested cost of the method, 5166 replacement gilts are purchased this year, PG 600 needs to be used for 20% of the replacement gilts for oestrus promotion, the cost of the PG 600 used for each replacement gilt is 43 RMB, and the drug cost is 44427.60 RMB; according to the output value, after conventional treatment measures and oestrus promotion of PG 600, the oestrus breeding rate reaches 94.12%. 5166 replacement gilts are introduced, and supposing that the overall oestrus breeding rate is 93%, the standard oestrus breeding rate of the replacement gilts is 90%; the anestrus replacement gilts are sold, and supposing that each replacement gilt is 130 kg and each kg of the replacement gilts is 12 RMB, 411213.60 RMB of loss is reduced.

The invention discloses a vehicular ventilation control system. The vehicular ventilation control system comprises a parameter collecting module, a ventilation control module and a ventilation execution module. The parameter collecting module is used for collecting environment parameters of vehicles, and the environment parameters at least include the parameter of vehicle inside and outside environment information including vehicle inside and outside temperature information. The ventilation control module is used for judging whether collected data meet a preset ventilation condition or not, if yes, an instruction making the ventilation execution module in an execution mode is generated, and if not, an instruction making the ventilation execution module in a stopped state is generated. The ventilation execution module is used for responding the instructions sent out by the ventilation control module. The vehicular ventilation control system can automatically recognize vehicle inside and outside environment parameters and automatically control ventilation and air change in the vehicles according to preset ventilation conditions so that the environment parameters in the vehicles can be maintained within a preset range.

The invention discloses a grain pile dewing early-warning, prevention and control system and method based on temperature field and humidity field coupling. The early-warning, prevention and control system comprises a temperature measurement senor array, an analyzing and early-warning device and a ventilation control device which are sequentially and electrically connected. The temperature measurement senor array comprises a plurality of regularly arranged temperature sensors, the temperature sensors are arranged at different positions in a grain pile, and each temperature sensor is located at an actual measurement point in the grain pile. The analyzing and early-warning device comprises a temperature field building module, a humidity field building module and a coupling module, and the temperature field building module is sequentially and electrically connected with the humidity field building module and the coupling module. The early-warning, prevention and control system and method can predict the time when dewing may occur in the grain pile in several days or tens of days and the positions where dewing may occur in the grain pile in several days or tens of days, thereby avoiding mildew losses, lowering expenditure and guaranteeing the quantity and quality safety of stored grain.

A ventilation controlling apparatus for feeding windshield defrost outlets and side window demist outlets in motor vehicles with one or more air passages and respective doors for each outlet. The apparatus supports a mode in which the demist door opens up to a predefined angle without the defrost door opening, too, with the predefined angle depending on the design of a cam attached to the demist door and a pin engaged with that cam and attached to the defrost door.

A system and method of controlling a ventilation system is provided based on a determination of local dew point and automatically activating an exhaust fan before condensate appears on structure and objects and ideally before visible condensation forms in the air of an enclosed area. Firmware in the control circuit detects the presence of hardware components 1 and operates a control circuit in one of a plurality of modes based on the detected hardware components that are coupled to the control circuit.

A ventilated animal habitat in the form of a frame having at least one shelf supporting an animal enclosure with a ventilation control region including an ambient air inlet and exhaust air outlet and a ducting system also supported by the frame with an exhaust air collection chamber having a mouth abutting the enclosure around the exhaust air outlet to capture exiting habitat air drawn under negative pressure by a remote vacuum source and direct the captured air through a carry way duct while fresh ambient air is introduced into the enclosure.

A hyperbaric oxygen therapy system includes a pressure vessel containing a gas, an oxygen concentration measurement apparatus for monitoring the concentration of oxygen in the gas, an environmental control apparatus for controlling the temperature of the gas in the vessel, and a pressure / ventilation control apparatus for controlling the pressure of the gas in the vessel. The pressure vessel is capable of accommodating a patient. The oxygen concentration measurement apparatus includes an oxygen concentration analyzer and a plurality of gas lines connecting the oxygen analyzer to the pressure vessel. The pressure / ventilation control apparatus includes a pressure controlling valve, a pressure sensor, a ventilation valve, and a controller having a programmable pressure profile. The environmental control apparatus includes a scrubber, a heat exchanger and a blower located within the pressure vessel. A compressor for the system includes a compressor silencer. An airlock providing access to the pressure vessel includes a safety mechanism.

An anesthesia delivery and ventilation system (ADVS) includes an expiratory section, a circulation flow system (CFS), an inspiratory section, a ventilation drive system (VDS), and an anesthesia delivery system (ADS). The expiratory section receives gases from a patient and the inspiratory section and fresh gases from a fresh gas supply system. An elastic mixing reservoir receives and mixes the gases circulated by the CFS with residual gases via a connector element. The inspiratory section connects to the expiratory section at one end and to a patient connector tube at the other end. The ADS infuses an anesthetic agent into the mixed gases in the inspiratory section. The VDS delivers the mixed gases with the anesthetic agent to the patient. The VDS and the CFS are controlled and operate independently of each other to provide positive end-expiratory pressure control and ventilation control to the patient without use of a proportional valve.

Disclosed in the invention is a simulation experiment apparatus for a ship fire disaster. The apparatus comprises an enclosed cabin, an automatic ventilation control mechanism, a fire source combustion system, a smoke monitoring system, and a data acquisition computer. The enclosed cabin is arranged horizontally; and the proportion of the length to the height of the enclosed cabin is a value less than 10:1. A piece of transparent fire-proof glass is arranged at the side of the enclosed cabin; and composite rock wool structures formed in stain steel plates are formed at the top surface and the bottom surface of the enclosed cabin. The automatic ventilation control mechanism arranged above the enclosed cabin is respectively communicated with the two ends of the enclosed cabin. The fire source combustion system is arranged inside the enclosed cabin; and the distance between the fire source combustion system and a blast pipe is in a range of 1 to 3 meters. The smoke monitoring system is arranged in the enclosed cabin. The data acquisition computer is respectively connected with the fire source combustion system and the smoke monitoring system by a multi-channel data acquisition instrument and is also connected with the automatic ventilation control mechanism.

The invention provides an archive storehouse temperature and humidity wireless control device based on a Zig Bee technology. A temperature and humidity detection unit is used to collect values of temperature and humidity of an archive storehouse, the values are transmitted to a client-side management computer through zigbee wireless relay routing and a wireless gateway, and the client-side management computer analyzes the values and outputs instruction to control a humidity control unit, a temperature infrared control unit, a window automatical open ventilation control unit, and an electric file intensive shelve control unit to conduct automatic adjustment control of temperature and humidity. Temperature and humidity measurement equipment and relay transmission routing equipment transmit data and control the data through a zigbee short-distance wireless communication protocol, a position and quantity of a temperature and humidity collection unit, data transmission, and control of wireless transmission can be flexibly arranged according to actual needs of the archive storehouse, and additional wiring is not needed. All devices, systems, units, and equipment are supplied with power by batteries and are simple and convenient to install.

The invention provides microalgae high-throughout culture equipment comprising a frame, an oscillating mechanism, a temperature control device, a humidity control device, a ventilation control device, an objective table and a lighting device, wherein the objective table is suitable for fixing a culturing structure for containing an algae seed or algae liquid, the lighting device is arranged belowthe objective table and is suitable for providing even lighting for microalgae culture, the lighting device consists of a light source and a light guiding structure which comprises a light guiding layer, light reflection structures are arranged on the side surfaces and bottom surface of the light guiding layer so as to guide light from the light source to emit out from one surface of the light guide layer, therefore, light from the light source is evenly provided to the culturing structure containing the algae seed or algae liquid, and the lighting uniformity degree and lighting intensity formicroalgae high-throughout culture can be improved so as to meet the demands of microalgae growth and high-throughout screening.

The invention discloses a tunnel intelligent ventilating control method. Corresponding deviation and a deviation change rate are calculated through the pollutant concentration, the wind speed and the traffic volume parameters fed back by a field detector, then the values of a proportionality coefficient Kp, an integral action coefficient Ki and a derivative action coefficient Kd are regulated according to a preset fuzzy control rule, the control frequency of a frequency converter is obtained through PID operation, a jet fan is controlled to convert frequency and operate, the ventilation environment in velocity modulation is rapidly changed, the pollutant concentration and the wind speed parameters are circularly fed back, the current control frequency is continuously calculated and output, and demand ventilation is achieved.