137 results about "Air concentration" patented technology

A multipurpose aerosol medication delivery apparatus that includes a collapsible/expandable, or a fixed volume, or a combination of partially fixed volume and partially collapsible/expandable holding chamber for use with a metered dosed inhaler (MDI) and/or any standard small volume nebulizer. The holding chamber is designed to deliver-aerosol medication particles generated by an MDI; aerosol medication particles generated by a nebulizer; a single gas or a mixture of gases; a single gas or a mixture of gases that can yield a gas density that will enhance aerosol delivery of medication with both MDI and nebulizer; a single gas or a mixture of gases that will yield and deliver an oxygen concentration to a patient ranging from room air concentration to 100%. The device includes a reservoir that stores nebulized aerosol generated during exhalation to be inhaled during the next breath. The device also included a one way valve to prevent carbon dioxide generated during exhalation from rebreathing by not allowing the exhaled air from entering the holding chamber. The device includes an exit port with a second one way valve that allows the exhaled air to exit the device but closes during inhalation to prevent any entrainment of room air gas. The exit port may instead have a filter with one-way valve to trap the exhaled aerosol particles while allowing the exhaled gases to escape. The filter valve will similarly close during inhalation to prevent entrainment of room air gas. The holding chamber will allow a uniform mixture of aerosol medication and gases to flow together during inhalation to the patient via a mouthpiece or a facemask. The holding chamber is connected to a nebulizer chamber with a single or multiple connecting tubes that allow gas mixtures with varying density, viscosity, humidity and concentration of oxygen to flow into the holding chamber from the nebulizer chamber. The pattern of flow of the gas(es) does not disturb the flow of the nebulized medication from the nebulizer chamber to the holding chamber or interfere with the plume generated by an MDI. The device also serves as a facemask for delivering precise concentrations of oxygen or as a 100% non-rebreather mask. The device also serves to deliver precise concentrations of different density gases i.e. nitrogen, helium, oxygen, etc. This will allow varying fractions of inspired oxygen to deliver aerosol medication via MDI or a nebulizer. Thus, the device has the ability to deliver aerosol medication with an MDI or a nebulizer while retaining the ability to simultaneously deliver different density gas mixtures and varying fraction of inspired oxygen without interrupting one for the other.

The invention provides a multi-functional combustion experimental system, comprising an upper computer, a control system, an air supply unit, an air outlet valve, a safety valve, a sample experiment unit, an exhaust gas collector, an air concentration measuring unit and the like. A combustible matter is placed in the sample experiment unit, then a plurality of gases are flown to the sample experiment unit according to preset ratio through the air supply unit; then the temperature of the sample experiment unit is controlled or an automatic ignition device is controlled to enable the combustible matter to burn; a temperature sensor arranged at the sample experiment unit is employed to measure the combustion state of the combustible matter and space and temperature distribution; When combustion is finished, the combustion products are discharged into the air concentration measuring unit through the air outlet valve; and a plurality of air concentration sensors arranged in the air concentration measuring unit are employed to measure components and concentrations of gases in the combustion products. The multi-functional combustion experimental system of the invention features multiple functions and good universality, can finish multiple experimental working conditions in a single experiment and greatly improve experimental efficiency.

A device to convey the cool air from an air-conditioner into a computer includes an air-conditioner having an air vent on right side including a plurality of louvers on upper portion, a partition on lower portion, at least a tubular adapter projected outward from the front surface thereof to define an air concentration passage thereinbetween and an exhaust fan secured to the inner surface of the partition, a hose having one end connected with the tubular adapter and the other end connected with an inlet of a radiator inside a computer for conveying the cool air into the radiator to cool off the CPU in the computer by which the CPU will be operated in a predetermined constant temperature.

The invention discloses a method for arranging fans in a multi-vertical shaft system of a highway tunnel. The method mainly comprises the following steps: searching forward to find a mark for a vertical shaft with air supply volume to be determined to establish segmental calculations for the following calculation of the initial value Qbi<0> of the air supply volume of the current (vertical shaft), gradually increasing air supply volume Qbi, calculating and detecting air concentration ratios Ci at bottoms of all vertical shafts till all of the air concentration ratios Ci are less than or equal to 1 and calculating all designed air volumes Qri and air speed vri for establishment of segmental calculations; and calculating the air concentration ratios Ci at bottoms of all vertical shafts and detecting if the air concentration ratios are less than or equal to 1 to realize circulation control of established segmental calculations. The forward segmental searching calculation is extremely effective for multiple segmental ventilation combination of exhaust gas discharge and fresh air supply. The solution of the calculation is a safe and economic solution under given conditions and can be used for arranging fans conveniently.

A control apparatus for an internal combustion engine prevents variation of an air fuel ratio even upon introduction of purge air. A delay time occurring until the intake air detected, after having arrived at the combustion chamber through a surge tank, influences an air fuel ratio sensor, a delay time occurring until purge air containing evaporated fuel generated upon purging a canister, after having arrived at the combustion chamber through the surge tank, influences the air fuel ratio sensor, and a delay time occurring until fuel supplied by an injector, after having arrived at the combustion chamber, influences the air fuel ratio sensor, are represented by simplified physical models. A purge rate in the combustion chamber or in the neighborhood of the air fuel ratio sensor is calculated by using the physical models, and a purge air concentration and a fuel correction amount are calculated based on the purge rate thus obtained.

The invention provides a smart toilet monitoring management method and system. The smart toilet monitoring management method comprises the steps that the air quality information and the smart toilet use information of the smart toilet are acquired, the air conditioning device (e.g. ventilator or dehumidifier, etc.) is controlled to perform air conditioning when the air quality information does notmeet the preset air quality standard (e.g. air concentration value, ambient temperature an ambient humidity, etc.), and the lighting device and the flushing device in the smart toilet are controlledaccording to the smart toilet use information. The fault of various types of hardware devices in the smart toilet can also be automatically detected and located, and the fault prompt information, thesmart toilet use information and the air quality information are outputted to the background work personnel to be viewed in real time so that automatic and intelligent smart toilet monitoring management can be realized, then the hygienic condition of the public smart toilet can be improved, the utilization rate of the facilities in the public smart toilet can be enhanced, the managed content of the public smart toilet is reduced through automatic control and the management difficulty can be reduced.

A cleaning-liquid circulation path is formed so that cleaning liquid in a cleaning tank is suctioned by a circulating pump and circulated through a predetermined path and then, returned to the cleaning tank again. A deaeration device for bubbling dissolved air in the cleaning liquid by cavitation is connected on the way of the cleaning-liquid circulation path so as to bubble the dissolved air in the cleaning liquid flowing through the cleaning-liquid circulation path by the deaeration device, and the bubbled dissolved air flows back to the cleaning tank together with the cleaning liquid so that the bubbled dissolved air is ejected from the liquid surface of the cleaning tank to the outside of the tank. Moreover, a propeller-type pump is used as the circulating pump, and the dissolved air concentration of the cleaning liquid is controlled within a range of 2.5 to 3.5 mg/l.

The invention relates to a system and a method for accurately measuring instantaneous oil consumption value of an automobile. The system is characterized by comprising the following modules of: an air flow meter, a discharge analyzer, a chassis power measuring machine and main control equipment, wherein the air flow meter is used for measuring the volume V1 of instantaneous diluent air with high precision; the discharge analyzer is used for sampling in real time and measuring the concentration rho i1 of the instantaneous diluent air and the concentration rho I2 of mixed gas; the chassis power measuring machine is used for measuring instantaneous distance d of the automobile; and the main control equipment is used for reading the volume and the concentration of the instantaneous diluent air, the volume and the concentration of the mixed gas and the instantaneous distance measured by the system, calculating pollutant exhaust mass Mi in the instantaneous exhaust of the automobile according to the volume difference, the concentration difference and the instantaneous distance, converting the Mi into the mass of a fuel according to carbon element conservation, and finally dividing the mass by the density D of the fuel to accurately obtain the instantaneous fuel consumption FCi of the automobile.

The invention provides an air conditioner indoor unit and an air conditioner. An air outlet is formed in a shell of the air conditioner indoor unit, wherein an air outlet panel adapted to the shape of the air outlet is arranged at the air outlet; a plurality of sub air outlets penetrating through the air outlet panel are formed in the air outlet panel, and are radially distributed in the air outlet panel. According to the air conditioner indoor unit, the sub air outlets are radially distributed in the air outlet panel, air generated in the shell is required to reach the air outlet panel when being blown out of the air outlets, and is radially delivered out after being completely scattered by the sub air outlets in the air outlet panel, so that the air supply area is enlarged, air concentration is further effectively avoided, the air can be blown out in multiple directions, the problems of greater regional temperature difference caused by supply air volume concentration and the like are effectively solved, the air supply comfort of the air conditioner indoor unit is improved, and experience effects of a user are improved.

The invention relates to a bag-cultivation industrial culture process for golden mushrooms in China, and an optimization, regulation and control technology is adopted for the environment temperature, the environment humidity and the air concentration which are required for the growth and the development of the golden mushrooms. On the basis of the prior golden mushroom industrial culture conditions, and by changing the cold air flow direction and the air speed of an air cooler, the cold air cannot directly blow to a fungus pack on the top bed; three axial fans are additionally arranged indoors to form an indoor air internal circulation system; the facilities are optimized, regulated and controlled, a circular ventilation opening is arranged on the wall facing to the center at the rear part of the air cooler, and an air throttle for controlling the opening and the closing is installed at the outer side; microcomputer time controllers are installed for a fan and a ventilation fan, the start-stop time is set according to the parametric variation rules in different stages of growth and development of the golden mushrooms, and the operating time of the internal circulation system is controlled.

The invention provides a process for removing F, Cl and As from waste acid by a hot air concentration method. Flue gas generated in the process of smelting non-ferrous metal is subjected to electrical dust precipitation and is used for making acid, and F, Cl and As are contained in dilute acid. The removal process comprises the following steps of: 1) blowing air into a SO3 cooler by using a blower, converting the air into hot air by using a large amount of waste heat released in the process of converting SO2 into SO3, and allowing the hot air to enter the bottom of a concentration tower; 2) pumping the waste acid to the top of the concentration tower by using a waste acid delivery pump, spraying the waste acid from the top of the tower, and allowing the waste acid to fully contact the hot air from bottom to top; 3) making the F and the Cl in the waste acid combined with water vapor and enter a tail gas washing tower 4 in an acid mist form, and pumping alkaline liquor in an alkaline liquor storage tank into the tail gas washing tower by using an alkaline liquor delivery pump, and neutralizing to obtain salt for emission; and 4) cooling concentrated sulfuric acid obtained at the bottom of the concentration tower to remove the As, and performing vulcanization impurity removal to obtain an industrial product such as sulfuric acid. The process has the advantages of small occupied area, short flow, high waste acid treatment capacity and the like.

A method and a mobile terminal for gas detection warning are disclosed to solve the problem that people cannot detect gas by themselves due to the lack of a portable gas detecting apparatus. The mobile terminal is portable and typically includes a central control unit, a gas detection unit, a warning unit and a user interface unit. The apparatus performs a warning operation by using a warning policy corresponding to the detected air concentration by setting warning policies corresponding to a kind of gas in different concentration ranges respectively.

The invention relates to a method for monitoring farmland ammonia volatilization in real time based on laser absorption spectrum technology, which comprises the following steps of using an open type long optical path diode laser absorption spectrograph to measure the ammonia concentrations of the volatilization source in the upwind direction and the downwind direction simultaneously; using a three-dimensional ultrasound anemobiagraph to measure meteorological data such as three-dimensional wind speed and temperature, or using a profile weather system to measure the wind speed, temperature and wind direction of different heights; estimating the theory proportion (C/Q) sim of the concentration to the volatilization rate of the air through reverse analog of the motion track of the air particle from the volatilization source to the air concentration monitoring position based on the ammonia concentration and the metrological data; and calculating the air volatilization rate Q (Mu g*m<-2>*s<-1>) by the following formula and getting rid of abnormal analog value according to the metrological data. The method is applicable to volatilization sources of any scale and shape, and can continuously monitor ammonia volatilization on line in real time with advantages of non contact, high sensitivity, high selectivity, and high time resolution ratio.

The invention discloses a system and a technology for producing a fixed bed gas and fully recovering heat. The system which comprises a total air tube, a total low pressure steam tube, a gas stove, a residual heat boiler, a gas washing tower, a deduster and a dry water seal is characterized in that: one outlet end of the total air tube is communicated with the bottom of the gas stove through a primary air valve, and the other outlet end of the total air tube is communicated with the inlet end of an upward blowing gas inlet tube through an upward nitrogen blowing air valve; a total steam valve and a steam triple valve are arranged on the total low pressure steam tube in order; a first outlet of the steam triple valve is connected with the inlet end of the upward blowing gas inlet tube, and a second outlet of the steam triple valve is connected with an upper gas channel; the outlet tube of the upward blowing gas inlet tube is communicated with the bottom of the gas stove; a gas outlet at the top of the gas stove is communicated with the gas inlet of the deduster through the upper gas channel; the gas outlet of the deduster, which is communicated with a blowing air concentration recovering device through a blowing air recovering valve and is communicated with a chimney through a chimney valve, is communicated with the inlet end of the dry water seal through an upward blowing gas valve; and the residual heat boiler is a combination heat tube boiler. According to the invention, heat in the gas production process can be completely recovered, so energy saving, environmental protection, safety and reliability are realized.

The air stoichiometric ratio is determined without using any multi-dimensional map. A fuel battery system computes a command current value and a command voltage value of a fuel battery (20) during low-efficiency power generation according to a requested electric power, estimates a reference voltage of the fuel battery (20) on the basis of the command voltage value and the water temperature when the system uses the command current value as a reference current, determine the difference between the estimated reference voltage and the command voltage value as an air concentration overvoltage target value, computes the air stoichiometric ratio by using the air concentration overvoltage target value, computes the volume of the air during the low-efficiency power generation by using the air stoichiometric ratio, and control the volume of air supplied to the fuel battery (20) according to the computed volume of air. With this, the reference voltage is estimated on the basis of the command voltage value and the water temperature, the difference between the reference voltage and the command voltage value is determined as an air concentration overvoltage target value, and the air stoichiometric ratio is computed by using the air concentration overvoltage target value, thereby determining the air stoichiometric ratio without using any multi-dimensional map.

The invention relates to a method for rapidly measuring 222Rn and 220Rn daughter concentration in air in terms of an alpha general count. An air sampling pump is utilized to collect radon daughters in the air to a filtering membrane, an alpha disintegration total count on the filtering membrane is measured, and therefore air concentration of the radon daughters is calculated. Two kinds of measuring periods exist, namely a short-time interval measuring period and a long-time interval measuring period. When a short-time interval t is taken as the measuring period, data larger or equal to six measuring periods are utilized and nonlinear fitting or the least square method is utilized so as to obtain 222Rn and 220Rn daughter activity on the filtering membrane at the beginning measurement. When long-time intervals, namely t1, t2, t3, t4, t5 and t6 are taken as measuring periods which are 6 in number, the 222Rn and 220Rn daughter activity on the filtering membrane at the beginning measurement can also be obtained. The radioactive decay law and the accumulation law of the 222Rn and 220Rn daughters on the filtering membrane in the sampling process are utilized, and therefore the 222Rn and 220Rn daughter concentration in the air can be obtained in a backstepping mode.

The invention relates to an air concentration testing device, and in particular relates to an air testing platform adopting a Herroitt multiple-reflection specimen chamber. The air testing platform comprises a specimen chamber housing, an infrared light emitter, a light receiver and a conjugated infrared light reflective device. An air inlet and an air outlet are configured on the specimen chamber housing, and an entry direction shifting device and an exit direction shifting device are configured in the cavity of the specimen chamber housing. The conjugated infrared light reflective device comprises two conjugated concave infrared light reflectors fixed on the two ends of specimen chamber housing respectively. The light from the infrared light emitter enters into the cavity of the specimen chamber housing; after being reflected by the entry direction shifting device, the light is reflected many times between the two conjugated concave infrared light reflectors; and the light reflectedmany times is reflected by the exit direction shifting direction device to the light receiver eventually. The actual optical distance (about 1m) achieved in the invention is over six times as long asthe entire length of the body of a multiple-reflection reflecting pool, thus a lower limit of NO testing implemented by the air testing platform with a multiple-reflection reflecting pool can be lessthan 25 ppm.

A cleaning-liquid circulation path (7) is formed so that cleaning liquid in a cleaning tank (1) is suctioned by a circulating pump (8) and circulated through a predetermined path and then, returned to the cleaning tank again. A deaeration device (9) for bubbling dissolved air in the cleaning liquid by cavitation is connected on the way of the cleaning-liquid circulation path so as to bubble the dissolved air in the cleaning liquid flowing through the cleaning-liquid circulation path by the deaeration device, and the bubbled dissolved air flows back to the cleaning tank together with the cleaning liquid so that the bubbled dissolved air is ejected from the liquid surface of the cleaning tank to the outside of the tank. Moreover, a propeller-type pump is used as the circulating pump, and the dissolved air concentration of the cleaning liquid is controlled within a range of 2.5 to 3.5 mg/l.

The invention provides an RFID (Radio Frequency Identification) label with an air-sensitive device, an RFID system and an air concentration detection method. Two pins are arranged on a chip of the RFID label; a parallel structure is formed by the air-sensitive device and an antenna of the RFID label; a logical circuit for controlling switch-on/off is arranged on a line connecting the air-sensitive device with the chip of the RFID label; the connecting line and the logical circuit for controlling switch-on/off are one parts of the chip; when the logical circuit is switched off, the air-sensitive device is not in parallel connection with the antenna, and after the air-sensitive device is placed for a period of time under the condition of a certain air concentration, a first resonant frequency and the signal strength of the antenna are kept unchanged; when the logical circuit is switched on, the air-sensitive device is in parallel connection with the antenna, and after the air-sensitive device is placed for a period of time under the condition of the certain air concentration, the antenna works under a second resonant frequency; and the RFID label is used for receiving an instruction sent by an RFID reader so as to control the switch-on/off of the logical circuit, so that the change in the air concentration is detected by comparing the difference between the signal strengths under different frequencies of the antenna. The change in the air concentration can be detected with lower cost by using the RFID label with the air-sensitive device.

The invention discloses a high-strength turbine blade. The high-strength turbine blade comprises a blade surface, a blade root and a blade top, wherein the upper part of the blade surface is connected with the blade top; the lower part of the blade surface is connected with the blade root through a connecting piece; a square air concentration channel is arranged on the blade surface; air vents are formed around the square air concentration channel; a lacing hole is formed in the middle part of the blade surface; the width of the blade surface is gradually decreased from the blade root to the blade top; and the blade surface is manufactured through high-strength steel. According to the high-strength turbine blade, the manufacturing cost is low, the working efficiency is high, and the strength is high.