17 results about "Breathing zone" patented technology

1. The name of the design product: air sterilizer (portable neck hanging type). 2. The use of the design product: the design product is used for sterilizing, disinfecting and purifying the air in the breathing area of the wearer. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

A powered air purifying respirator includes: a protective headgear including a face shield; a flexible material configured to seal gaps between an outer frame of the face shield and a head of a user to define a breathing zone; and an airflow system built into the protective headgear, the airflow system including: an air intake filter outside the breathing zone; one or more vents inside the breathing zone; one or more air ducts coupled to the air intake filter and the one or more vents; and a blower coupled to the one or more air ducts, wherein the blower is configured to suction air through the air intake filter to generate filtered air and is further configured to blow the filtered air through the one or more air ducts to direct the filtered air through the one or more vents into the breathing zone.

This invention belongs to the field of fan control technology. It provides a laboratory exhaust gas-induced high-altitude jet fan control system, comprising: a multi-source data acquisition module for real-time acquisition of multi-dimensional time-series data related to laboratory exhaust gas emission safety, including fan operating parameters, building environment parameters, exhaust gas source equipment status parameters, and meteorological environment parameters; and a predictive maintenance and early warning module based on the multi-dimensional time-series data. By integrating multi-source data perception, chronic risk trend prediction, system vulnerability assessment based on digital twins, and graded resilience control strategies, a closed loop of "perception-prediction-assessment-decision-execution" is constructed. This achieves early identification, proactive early warning, and adaptive control of coupled risks between "equipment-building-environment-personnel," thereby enhancing the proactive safety capability to prevent toxic exhaust gases from entering the breathing zone of personnel.

The invention relates to the technical field of public health detection, and discloses a plasma disinfection numerical value testing method and system for a train compartment environment. According to the method, a complete numerical simulation framework is established, and a prediction model of the ion concentration is constructed through the actually measured ion release intensity and ion disinfection efficiency of the plasma equipment. Spatial disinfection efficiency distribution of plasma equipment at different arrangement positions and under different working parameters can be quantitatively analyzed, the disinfection effect of a passenger breathing area is scientifically predicted in combination with airflow organization characteristics in train carriages, and a theoretical basis is provided for optimal configuration of the plasma disinfection equipment.

Alkaline sprayable aqueous compositions are disclosed. In particular, sprayable alkaline aqueous chlorine compositions including a surfactant system for modifying the viscosity of the composition, are combined with an alkalinity source and a chlorine source. Methods of cleaning having reduced amounts of airborne particulates of the composition during spray applications are also provided according to the invention, namely reduction of airborne particulates having a micron size of 10 or less within a breathing zone of a user of less than or equal to 60 particles / cm3.

The application provides a particle concentration prediction method and a cooking fume exhaust device, comprising: acquiring a target prediction feature for predicting a particle concentration of a target breathing area; inputting the target prediction feature into a pre-trained neural network regression model to obtain a particle concentration prediction value of the target breathing area; the neural network regression model is used to represent a nonlinear mapping relationship between the target prediction feature and the particle concentration of the target breathing area; and outputting the particle concentration prediction value. The method can predict the particle concentration of the target breathing area where the user's mouth and nose are located based on the local detection result of the preset detection position and the actual operation state of the cooking fume exhaust device, thereby avoiding the numerical distortion caused by directly displaying the local measured value of the sensor, and further improving the accuracy of the particle concentration feedback result.

The invention relates to an air cleaning device, in particular, the invention relates to a supplementary air cleaning device which boosts delivery of clean air using energy from the existing air flow and from thermal updrafts to drive air through a filter. Moreover, the device is designed to create a localised extraction zone from just above the breathing zone of standing passengers. The device is mounted externally to an existing ventilation outlet such as may be found in a train, bus, or airplane, or in a building. The System for enhancing air filtration for public indoor or transportation spaces comprises an air inlet comprising an air inlet area; a reduced cross-sectional area zone comprising at least one nozzle (23) forming a floor of the mixing chamber the angle formed between the floor and the at least one nozzle is between 0 and 40 degrees.

A method, system, and computer program product for managing particle concentrations without human intervention before, during, and after a respirator fit test. One method includes controlling power to a particle generator to establish a target particle concentration in a breathing zone of a respirator fit test subject, collecting particle concentration data, analyzing the particle concentration data, and controlling, in real time without need for human intervention, power to the particle generator to maintain the target particle concentration.

A storage and positioning system for newborns, infants, and toddlers, comprising a back support zone, an abdominal support zone, at least one, preferably two, softly padded boundary areas, and heating units, wherein there is a variable spatial arrangement between the back and abdominal support zones, by which the positioning angle and counter-support can be adapted to the child's body, characterized in that heating units are assigned to the back and abdominal support zones and can be integrated there or can be inserted via a designated receptacle, and that the system is designed in such a way that the child's face and breathing area remain free and that no fixation of the child is provided.

The application discloses a kind of numerical simulation method and device of the barrier property of mask to particulate matter, it is related to numerical simulation technical field.The application constructs real head model by three-dimensional reconstruction technology, and carries out three-dimensional modeling to mask, the gap condition based on actual wearing is combined splicing to head model and mask model, then mask area is set as isotropic porous medium, so as to realize the barrier of particulate matter when simulating mask, and particulate matter can pass directly at gap, subsequent for each gap position, the inhaled flow field distribution in breathing zone under corresponding condition is determined by numerical simulation process, to simulate the inhalation and deposition of particulate matter under corresponding condition of gap position, by adjusting mask type, gap parameter and respiratory flow and the like variable, the particulate matter protection performance of mask under gap leakage condition can be systematically quantified evaluation, improve the accuracy and authenticity of the barrier property of mask to particulate matter numerical simulation research.

Protective hood, particularly for welding. This protective hood (10) includes an optical unit (20) with two transparent screens (22A; 22B), which are connected by a sealing structure (24) and form a cavity (V22) between them. The sealing structure has a top opening (26A), through which the cavity (V22) opens and which is designed to be connected to a ventilation air duct (98), and a bottom opening (26B). The protective hood includes a face mask (40), which defines a breathing zone (Z40) and is configured to be secured over the user's nose and mouth. The face mask has an air inlet (40A), through which the breathing zone (Z40) is fluidly connected to the bottom opening, and an air outlet (40B) for the exhaust of the air breathed by the user. In operating configuration, an airflow carried by the duct reaches the breathing zone by passing through the cavity.Figure for the abbreviation: Figure 2.

The present application relates to the technical field of edge computing, and discloses a building automatic control multi-protocol data fusion and edge linkage control method, comprising the following steps: step S101, constructing an observation vector; step S102, constructing a breathing zone concentration field model; step S103, calculating a differentiable peak value agent and a peak weight; step S104, generating a peak migration vector; step S105, identifying a sensitivity vector; step S106, constructing a linkage target function; step S107, performing a projection gradient descent operation; and step S108, mapping a global control total amount adjustment instruction and issuing it. The present application realizes the fusion of multi-protocol heterogeneous data, takes into account indoor air quality, comfort and equipment operation energy consumption, constructs a multi-target linkage optimization system, calculates spatial distribution weights according to high concentration area distribution and migration trend, realizes regional differentiation regulation of air supply volume, and adapts to the differentiated air quality demand of each area of the building.

The invention relates to an integrated welding fume purification and post cooling regulation and control system. The integrated welding fume purification and post cooling regulation and control system is characterized by comprising a welding fume purification module and a post cooling air supply module; functional modules such as the processing room, the dust removal module, the cooling module and the intelligent monitoring module are organically integrated to adapt to application scenes of welding workshops of different scales; a welding station operation area is high in smoke dust purification efficiency, and the air quality of a staff breathing area is effectively guaranteed; the modular evaporation refrigeration cycle is adopted, only the welding post area is cooled through the directional air supply pipeline and the adjustable air supply outlet, the cooling capacity acts on the personnel operation area in a concentrated mode, the energy utilization rate is increased to 75% or above, and invalid energy consumption is further reduced; a'sensing-transmission-analysis-control 'closed-loop management system is constructed based on the Internet of Things technology, and real-time monitoring of environmental parameters, remote monitoring of equipment operation states and multi-system cooperative control are achieved.

The invention relates to the field of environmental monitoring, in particular to an air analysis and detection device for environmental monitoring. Comprising a shell and a manipulator, the manipulator is installed on the side face of the shell, a barrel is installed in the shell, a detection mechanism is arranged on the barrel and used for analyzing and detecting air, a sampling barrel is arranged in the barrel, an air bag is connected to the sampling barrel, an electric push rod is arranged in the sampling barrel, and a partition plate is arranged in the sampling barrel in a sliding mode. By arranging the air bag and the inflation mechanism, the sampling barrel is lifted off through light gas such as helium, the hovering height of the sampling barrel is controlled in combination with the adjusting mechanism, the technical bottleneck that traditional portable equipment can only conduct horizontal sampling on the near ground or a respiratory zone is effectively overcome, direct and fixed-point sampling on the middle and upper atmospheric environment is achieved through the design, and the sampling efficiency is improved. The data blind area of high-altitude atmospheric pollutant vertical distribution monitoring is filled up, and key technical support is provided for researching the atmospheric pollution diffusion law, the thermal inversion layer influence and the vertical interaction of an ecological system.

The application discloses a kind of indoor air quality real-time monitoring system based on multi-sensor fusion, specifically relates to indoor environment monitoring and health protection technical field, and sensitive population breathing zone data is collected by transient exposure perception module and generates transient exposure data, time alignment fusion module carries out time alignment to multiple sensor data and generates multidimensional pollution exposure vector, risk driving control module is mapped into health risk utility value and generates control instruction with minimization as target, and health feedback calibration module generates new individualized exposure response boundary parameter according to health outcome feedback and reversely adjusts the sampling strategy and determination criterion of perception module, and forms closed loop optimization;The application realizes accurate exposure evaluation by breathing zone transient exposure perception and time alignment fusion;Through health risk utility driven control, realize the collaborative optimization of multiple pollutants;Through health outcome reverse calibration, closed-loop adaptive mechanism is constructed, and the health protection effect for sensitive population is significantly improved.

The mask comprises a mask body and an atmosphere part capable of emitting odor molecules, the mask body comprises an outer layer and a complete inner layer which are sequentially arranged from outside to inside, when the mask is worn, the inner layer is arranged on the side, close to a user, of the outer layer, and the outer layer comprises a first upper part and a first lower part which are sequentially arranged from top to bottom; the first upper part and the first lower part are connected in an area except an area corresponding to a breathing area of a user, so that a through hole corresponding to the breathing area is formed between the first upper part and the first lower part; the cover body further comprises a containing piece used for arranging an atmosphere piece, an installation area is arranged between the outer layer and the inner layer, the containing piece is located in the installation area, and the projection of the through hole in the thickness direction of the outer layer is located in the installation area. The mask has the protection performance, the heat preservation performance and the air permeability; and the atmosphere piece improves the use experience of the user.