292 results about "Ventilation volume" patented technology

The invention discloses a multi-modal fusion exhibition building tall atrium natural ventilation evaluation method. The method comprises the steps that multi-modal data are obtained, wherein the multi-modal data comprise meteorological time sequence parameters, building three-dimensional point cloud and opening geometric parameters and air conditioner cooling parameters; inputting the multi-modal data into a multi-modal fusion neural network model to obtain a natural ventilation evaluation result, the natural ventilation evaluation result comprising vertical temperature distribution of the atrium and the ventilation quantity of each opening of the atrium; wherein the multi-modal fusion neural network model comprises a meteorological time sequence feature extraction module, a building geometric coding module, an air conditioning system parameter coding module, a cross-modal feature fusion module, a vertical temperature field prediction module and a ventilation quantity prediction module. According to the method, a space-time cooperative sensing mechanism of meteorological time sequence dynamic, building space topology and air conditioner parameter features is established, and the technical bottleneck of a traditional method in the aspects of cross-modal feature space alignment and interaction efficiency is broken through.

The invention discloses a tunnel oxygen supply control method based on multi-parameter coordination, and relates to the technical field of tunnel construction, and the method comprises the steps: constructing a multi-source environment monitoring data set, training a target ventilation quantity prediction model fused with a high-altitude correction coefficient based on the data set, and outputting an initial target ventilation quantity and an oxygen supply parameter; generating a pre-regulation instruction based on the initial target ventilation quantity and the oxygen supply parameters, simulating an instruction execution process through a digital twin virtual simulation model, and outputting oxygen supply evaluation parameters of oxygen content distribution, wind pressure loss and energy consumption of each block of the tunnel; constructing a tunnel oxygen supply evaluation model, and comparing oxygen supply evaluation parameters obtained by simulation with a safety threshold; and executing the formal adjustment instruction. Through multi-dimensional sensing treatment, high-altitude self-adaptive calculation, digital twinborn simulation verification, multi-scene parameter optimization, multi-device collaborative linkage and model dynamic evolution technologies, the breakthrough of tunnel oxygen supply from static experience control to dynamic precise intelligent regulation is realized.

The utility model relates to the technical field of elevators, in particular to an elevator car ventilation device capable of adjusting ventilation quantity, which comprises a car, a plurality of air outlet holes a which are distributed at equal intervals front and back are arranged on the middle lower portions of the left side and the right side of the inner wall of the car, and a plurality of air outlet holes b which are distributed in a matrix are arranged on the left side and the right side of the inner wall of the car and located above the air outlet holes a. Adjusting assemblies are arranged on the left side and the right side of the inner wall of the lift car correspondingly, each adjusting assembly comprises two L-shaped fixing vertical plates which are symmetrically arranged front and back, a shielding plate is slidably connected between the two L-shaped fixing vertical plates, and the position, close to the middle of the top edge, of the outer side of the shielding plate is in threaded connection with a pressing bolt. According to the elevator car ventilation device capable of adjusting the ventilation quantity, the opening and closing states of the air outlet hole b can be flexibly adjusted through the baffle plate in the adjusting assembly, so that the air flow is controlled, passengers can adjust the ventilation intensity according to actual requirements, and the situation that passengers feel uncomfortable due to large air flow in winter or under other special conditions is avoided.

The invention provides an air purification filter element control method and system based on environment awareness, and the method comprises the steps: collecting environment parameter data of a to-be-purified space and working state data of purification equipment, extracting the spatial and temporal change characteristics of the pollutant concentration in the environment parameter data, and generating environment characteristic data; based on the ventilation quantity and the environment characteristic data in the working state data, calculating the mass flow of each pollutant passing through the filter element, and performing weighted correction on the mass flow through a preset load coefficient to obtain a current load value; cumulative calculation is conducted on the load history data, the pressure difference distribution data and the current load value, and filter element service life parameters are obtained; target operation parameters are determined based on the filter element service life parameters and the environment parameter data, and a fan and a valve of the purification equipment are adjusted; according to the method, accurate evaluation of the state of the filter element is realized through multi-point environmental perception and load accumulation calculation, and dynamic regulation and control are performed by combining the environmental pollution degree and the service life of the filter element, so that the purification efficiency is improved and the service life of the filter element is prolonged.

The invention discloses an efficient heat dissipation high-voltage cabinet, and relates to the field of high-voltage cabinets. Through the cooperative operation of the heat dissipation fan at the bottom of the cabinet body and the ventilating fan at the top of the cabinet body, hot air and dust can quickly enter the air guide cavity through the long groove and then are exhausted through the ventilating fan, the flowing speed of air in the cabinet is increased, the heat dissipation efficiency is greatly improved, and the damage of high temperature to the high-voltage cabinet is effectively reduced through the efficient heat dissipation mode; meanwhile, the cleaning mechanism can automatically clean the filter screen, the cleaning brush can be driven by the driver to ascend, descend, rotate and transversely reciprocate, floating dust on the surface of the filter screen is cleaned in an all-dimensional mode, impurities are adsorbed, when the ventilator rotates reversely, airflow further blows off dust adsorbed by the filter screen, the filter screen is kept smooth all the time, and the stable ventilation quantity is maintained; therefore, the problems of reduced ventilation sectional area and increased airflow resistance caused by blockage of the filter screen are avoided, continuous and efficient heat dissipation of the high-voltage cabinet is ensured, frequent manual cleaning of the filter screen is not needed, and the labor cost and the maintenance time are saved.

The invention provides an underground coal mine ventilation control method and device, electronic equipment and a storage medium, and belongs to the technical field of mine ventilation. The method comprises the steps that the type and concentration characteristics of harmful gas in a target area are determined according to data collected by a biosensor array; determining time sequence data of the harmful gas according to the concentration of the harmful gas, and determining a target concentration change rate of the harmful gas according to the time sequence data; according to the concentration of the harmful gas, the target concentration change rate and the current underground acoustic wave characteristics of the coal mine, the target air volume of the target area is determined; according to the target air volume of the target area, the ventilation resistance of the target area and the current opening degree of the ventilation valve, the opening degree of the ventilation valve is controlled, and the ventilation air volume is determined. According to the coal mine underground ventilation control method and device, the electronic equipment and the storage medium, the ventilation quantity can be accurately and timely adjusted.

The ventilation device comprises a ventilation pipeline and a supporting frame, the ventilation pipeline is installed on the top of the supporting frame, a ventilation pipe is arranged on the outer wall of the ventilation pipeline, one end of the ventilation pipeline is communicated with an air inlet pipe, a sliding rail is installed on the inner wall of the air inlet pipe, a filter is connected to the sliding rail in a sliding mode, and a limiting block is installed on the inner wall of the ventilation pipeline. The adjusting assembly comprises an electric push rod, a connecting rod, a rotating rod and a baffle, the connecting rod is installed at one end of the electric push rod, the rotating rod is installed at one end of the connecting rod, the baffle is rotationally connected to the rotating rod, and the electric push rod is installed on one side of the outer wall of the ventilation pipeline. By arranging the adjusting assembly, the ventilation quantity can be accurately adjusted according to actual needs, different working conditions and environment changes are adapted, different temperature, humidity and air circulation requirements in the refrigeration house are met, it is ensured that air in the refrigeration house is circulated and replaced, and the optimal ventilation effect and air quality are achieved; and the temperature and the humidity in the refrigeration house are always kept in a proper range.

The application provides a kiln ventilation regulation device, comprising: a ventilation pipe; a protection shell is fixedly installed on the surface of the ventilation pipe, a connecting shell is fixedly installed on one side of the protection shell, a supporting plate is fixedly installed in the inner cavity of the ventilation pipe, a supporting rod is fixedly installed on the top of the supporting plate, and a supporting disc is fixedly installed on the top of the supporting rod. Through the design of the regulation assembly, the regulation assembly adopts a worm, a worm wheel, a rotating gear and an adjusting disc transmission structure, worm and worm wheel transmission improves stability, the rotating gear and the teeth can realize precise adjustment of the angle of the adjusting fan blade, the ventilation volume control error is reduced, the precision is improved compared with traditional manual adjustment, multiple adjusting fan blades are linked through adjusting rods and adjusting discs, the ventilation pipe inner cavity ventilation cross-sectional area can be changed synchronously, the airflow deflection problem of traditional single baffle adjustment is avoided, the kiln working condition rapid change demand is adapted, a sealing strip is arranged on the top of the adjusting fan blade, and heat loss caused by traditional baffle gap air leakage is avoided.

The utility model discloses an adjustable ventilation air tower structure, comprising a supporting main frame fixed on both sides of a roof vent, a cross frame connected and fixed on the top of the supporting main frame, a rain shield with return water slopes on both sides is installed on the upper end of the cross frame, and also comprises a surrounding plate arranged at the outermost side of the ventilation air tower and fixedly installed with the supporting main frame, side air outlets are provided on both sides of the bottom of the surrounding plate and at the edges of both sides of the roof vent, a valve plate is arranged in parallel below the cross frame and is located directly above the roof vent, and the valve plate and the cross frame are vertically slidably connected, a servo motor is arranged on the upper end of the cross frame, a threaded screw is vertically connected to the output shaft end at the bottom of the servo motor, and the threaded screw and the valve plate are threadedly connected, and the valve plate is more stable when lifting and lowering through the technical measure of lifting the valve plate; and in the lifting process, when the valve plate rises, the ventilation volume of the roof vent will increase, and vice versa, thereby achieving the effect of ventilation volume regulation.

The invention relates to an automatic indoor air pressure regulating valve, and belongs to the technical field of building ventilation equipment. The device is composed of a valve body made of a thermal resistance material, an air pressure driving assembly, a spring pre-compression regulator, a filtering module and a selectable sterilizing module. The device is technically characterized in that the inner body of the valve is automatically controlled to slide to open and close through air pressure difference to adapt to ventilation quantity. The valve body is made of high-heat-resistance high-molecular materials, and the heat bridge effect of the regulating valve is avoided. And the continuous adjustment of the opening and closing threshold within the range of 0.1-50Pa is realized by the threaded knob type adjuster. A UVC lamp tube (253.7 nm) and an ozone generator (0.05-0.1 ppm) can be selectively integrated, and three sterilization modes are supported; and the requirement for the air volume of 100-1000 m / h is met. The system is suitable for environments with ventilation requirements such as residences, factories, storage, medical treatment and laboratories, is particularly suitable for environments with energy-saving and heat-insulating requirements, and has self-adaptability, low-noise and efficient air treatment capacity.

The present invention discloses an oscillating heat-generating high-temperature hot air blower, which relates to the field of gas mechanical technology, and comprises a casing, wherein an air outlet pipe is installed on the top of the casing, and an air inlet pipe is installed at the side center position of the casing. In the present invention, heat can be generated by a gas storage mechanism, and wind can be sucked in from the air inlet pipe and discharged from the air outlet pipe through fan blades, and the wind will absorb heat at the same time. When high ventilation is required, the rotation speed of the motor can be increased, so that a plurality of centrifugal moving mechanisms can be moved, thereby driving a gear transmission mechanism, a worm gear transmission mechanism and a pulling mechanism to move, and then an outer bearing can be moved. The outer bearing drives the gas storage mechanism to move through a plurality of pushing mechanisms, so that the radius of the gas storage mechanism is reduced, and its centrifugal force is reduced, so that when the ventilation volume is increased, the temperature will not be increased at the same time. At the same temperature, different ventilation volumes can be provided to meet the use of sites of different sizes.

The utility model provides an energy-saving building window body with an adjustable ventilation channel, and relates to the technical field of building window bodies. The energy-saving building window with the adjustable ventilation channel comprises a window body and further comprises a ventilation groove, the ventilation groove is formed in the window body, a plurality of wind shields are rotationally installed in the ventilation groove, a movable groove is formed in the window body and located below the ventilation groove, a plurality of worm wheels are rotationally installed in the movable groove, and the worm wheels are rotationally installed in the movable groove. The top ends of the multiple worm wheels penetrate through the top of the movable groove and are coaxially connected with the multiple wind shields correspondingly, and worms are installed on the sides, located in the movable groove, of the multiple worm wheels in a meshed mode. The driving assembly is located in the window body and used for driving the worms to rotate; the ventilation quantity and the wind direction of the ventilation groove can be conveniently adjusted by a person, operation is easy and rapid, use by the person is facilitated, ventilation can be guaranteed while sunshade is achieved, and the person can conveniently store the sunshade curtain.

The utility model discloses a balcony guardrail, which relates to the technical field of house building, and comprises a vertical rod, a cross rod, a first punching plate and a second punching plate, the vertical rod is slidably installed on the cross rod, the first punching plate is connected with the cross rod, a first ventilation position is formed on the first punching plate, the second punching plate is connected with the vertical rod, and the second ventilation position is formed on the second punching plate. The first punching plate and the second punching plate are arranged in parallel, a second ventilation position is formed on the second punching plate, and the first ventilation position and the second ventilation position are arranged in a staggered mode. According to the balcony guardrail, the first punching plate and the second punching plate are arranged to achieve safety protection, meanwhile, the first ventilation position and the second ventilation position are formed in the first punching plate and the second punching plate respectively, and the ventilation quantity is adjusted by adjusting the overlapped and aligned area of the first ventilation position and the second ventilation position; therefore, the balcony guardrail can simultaneously realize safety protection and indoor ventilation.

The application discloses a layout design method and device for a ventilation pressure regulating facility of an underground water storage cavern, and the method comprises the following steps: determining layout parameters of a tunnel group of the water storage cavern; constructing a water power simulation model of the water storage cavern composed of the tunnel group based on a one-dimensional water flow motion control equation; solving a distribution of a water hydraulic characteristic value along a path under a non-constant flow condition according to the water power simulation model, determining a space-time distribution of a tunnel section in a pressurized state and a non-pressurized state, judging a required ventilation amount according to the space-time distribution, and initially drafting a layout scheme of a cavern ventilation pressure regulation; adjusting the layout parameters, checking and analyzing whether the layout scheme of the ventilation pressure regulating facility is reasonable under the non-constant flow operation condition, and correcting the layout parameters of the water power simulation model established based on the one-dimensional water flow motion control equation according to a calculation result; and repeating the steps of adjusting, checking and correcting until a reasonable layout scheme of the ventilation pressure regulating facility is constructed.

This invention discloses an adaptive cross-section flexible ventilation duct and method. Currently, ventilation ducts used in tunnel construction are mostly in regular geometric cross-sections such as circles and rectangles. This invention, located within a ventilation duct area on one side of the tunnel roof, includes a flexible duct. The cross-section of the flexible duct is a closed area formed by its lower, right, and upper boundaries. Airbags are provided on the outer surfaces of the lower and right boundaries. Each airbag includes multiple spaced longitudinal and transverse airbags. The longitudinal airbags are positioned along the tunnel length, and the transverse airbags are perpendicular to the longitudinal airbags. The two ends of each transverse airbag are connected to two adjacent longitudinal airbags. This invention employs an adaptive shape structure. During ventilation, the boundary of the flexible duct coincides with the area where the duct can be installed, maximizing space utilization, creating a larger ventilation area, thereby achieving a larger ventilation volume, and ultimately achieving a longer ventilation distance than circular ventilation ducts.

The utility model provides a tracheotomy catheter respiratory capacity regulation and control device, which comprises an upper part, a lower part, a lower part and an upper part, the upper part is of a cylindrical structure and is arranged in a tracheotomy catheter, and a buckling brim is arranged at the top of the upper part and is buckled with the tracheotomy catheter; the lower part is of a cylinder structure, is fixedly arranged in the tracheotomy catheter and is movably connected with the upper part; one end of the respiratory capacity adjusting part is arranged on the top of the inner side of the lower part, and the other end of the respiratory capacity adjusting part is arranged on the inner side of the upper part through a clamping piece. According to the tracheotomy catheter, the upper part and the lower part which are of the cylindrical structure are installed at the tube opening of the tracheotomy catheter, the lower part is clamped on the tube wall of the tracheotomy catheter through the anti-skid layer, the superficial area of the respiratory capacity adjusting part is controlled by rotating the upper part, and therefore the ventilation capacity in the tracheotomy catheter can be accurately adjusted and controlled. The device is simple in structure and convenient to operate, and the respiratory capacity can be adjusted in real time according to specific requirements of patients.

The invention relates to a device for automatically pressing a breathing balloon. The device comprises a mask, an exhalation valve, an inhalation valve, the breathing balloon, a three-way pipe, a pulling piece strip and a main controller. The mask is fixed to the face of a patient through the tearing adhesive tape and used in cooperation with the exhalation valve and the inhalation valve to form a breathing loop. The exhalation valve and the inhalation valve are both connected with the three-way pipe, a detection chip is arranged in the three-way pipe, the ventilation capacity is detected through the air pressure and the flow speed, and data can be sent to the main controller through wireless radio frequency signals; the pulling sheet strip is wound outside the breathing balloon, a main controller is fixed at one end of the pulling sheet strip, a transmission gear is arranged at the bottom end of the main controller and connected with the pulling sheet strip, the three-way pipe is provided with an air inlet, an air outlet and a pressure tapping port, and the pressure tapping port is connected with a pressure sensor of the breathing balloon. Compared with the prior art, the pressing force can be accurately guaranteed, and the pressing ventilation capacity can be guaranteed; the universality is realized; and meanwhile, clinging and regular pressing of the mask are ensured.

The invention provides an optimization method and system for a marine engine room ventilation system, and relates to the technical field of analogue simulation, and the method comprises the steps: constructing a ventilation system simulation model of a marine engine room; according to the structure information and the working condition information of the ventilation system simulation model, determining the total heat dissipating capacity of the equipment; determining a reference ventilation quantity and a ventilation quantity area distribution table according to the total heat dissipation quantity of the equipment; setting the reference ventilation quantity and the ventilation quantity area distribution table into a ventilation system simulation model; performing fluid dynamic simulation on the ventilation system simulation model to generate a problem list; the optimal ventilation system structure parameters are optimized and determined through a swarm intelligence algorithm by taking weakening of hot spots, reduction of dead corner volume fraction reduction and weakening of a backflow path as targets. Hot spot areas in the cabin can be effectively weakened, the volume fraction of ventilation dead corners is reduced, the short-circuit backflow phenomenon is weakened, and the overall energy efficiency and design reliability of a ventilation system are remarkably improved while safe operation of equipment is guaranteed.

The utility model belongs to the technical field of pipeline conveying, and particularly relates to a powder conveying device which comprises a conveying pipe and a sedimentation supporting pipe, a negative pressure suction fan is arranged at the discharging end of the conveying pipe, the upper end of the sedimentation supporting pipe is fixedly connected to the conveying pipe, and the lower end of the sedimentation supporting pipe is supported on the horizontal plane. A discharging pipe is arranged on one side of the sedimentation supporting pipe, the conveying pipe is connected to the grate cooler through a hot air pipe, a ventilation pipe is arranged on the sedimentation supporting pipe, and a wind shield is arranged at the position of the ventilation pipe in an openable and closable mode. Hot air generated by heat exchange of the grate cooler is used for replacing a hot-air blower, due to the fact that the temperature of the hot air generated by the grate cooler is high, powder is prone to being excessively dried, the ventilation pipe is arranged to introduce natural air into the material conveying pipe for cooling, the size of the ventilation pipe shielded by the wind shield is adjusted according to the temperature measured by the material conveying pipe, and then the ventilation quantity is changed. And the air inlet amount can be controlled by adjusting the air baffle, and long-time overheating of the conveying pipe is avoided.

This invention discloses an intelligent ventilation and control system for hazardous waste containers, relating to the fields of ventilation systems and control technology. It aims to solve the technical problems of traditional hazardous waste container ventilation systems, such as low ventilation efficiency, high energy consumption, inability to dynamically adjust ventilation volume according to the hazardous waste status, and the tendency to lead to the accumulation of harmful gases or resource waste. The system includes: a container monitoring module, located inside and outside the container, for collecting environmental parameters; an intelligent ventilation execution module, used to coordinate with the ventilation and natural ventilation openings to adjust the ventilation state inside the container; a linkage control center, used to process monitoring data and generate control commands; and an energy supply unit, providing power to all modules of the system. This invention, through a dynamic strategy of "natural ventilation priority + mechanical ventilation assistance," accurately matches the ventilation needs of different hazardous wastes, solving the core problem of existing systems' inability to dynamically adjust according to the characteristics of hazardous waste and the real-time environment.

A process, a signal processing unit and to a ventilator automatically calculate a set point for a frequency, with which the ventilator performs ventilation strokes and thereby mechanically ventilates the patient. An alveolar or proximal minute volume is predefined. A lung time constant for the lungs of the patient is determined. The volume of a dead space in a fluid connection between the lungs and the ventilator is determined. A mandatory frequency set point (fset,mand) for the mandatory ventilation of the patient is calculated. An ideal frequency (fspon), with which the patient can achieve the minute volume by means of spontaneous breathing, is calculated. The ventilation frequency set point is calculated as a weighted average of the mandatory frequency set point (fset,mand) and of the ideal frequency (fspon). The averaging depends on a determined actual intensity of the spontaneous breathing of the patient.

The utility model discloses an air volume adjusting valve which is arranged at an air outlet of a ventilation pipeline. Comprising a valve body, blades and a control box arranged on the outer side of the valve body. A motor and a driven gear are arranged in the control box; a controller is arranged on the outer side of the control box; the motor is electrically connected with the controller, and rotation of the motor is controlled through the controller. The output end of the motor is connected with a power wheel, and the power wheel is meshed with the driven gear at the uppermost part; the blades are arranged on the rotating shaft, and wind speed sensors are arranged on the blades; the wind speed sensor is electrically connected with the controller; a detachable filter screen is arranged on the valve body, and the problems of accurate control over the ventilation quantity in the valve body and filtration of ventilation gas are solved.

The blade angle adjustable ventilation device comprises a ventilation frame, positioning plates are vertically installed on the two sides of the ventilation frame, a supporting plate is fixedly installed on the upper portion of an inner cavity of the ventilation frame, blades are transversely installed below the supporting plate at equal intervals, a supporting shaft is fixedly installed at the center of the top of each blade, and the supporting shaft is fixedly installed on the lower portion of the inner cavity of the ventilation frame. The upper end of the supporting shaft penetrates through the supporting plate and extends to the position above the supporting plate to be fixedly provided with a gear, a gear ring is installed outside the gear in a meshed mode, and an adjusting block is fixedly installed in the middle of the front face of the gear ring. The angle of the blades can be conveniently and quickly adjusted by rotating the adjusting rotating disc, so that the ventilation quantity and the ventilation direction are flexibly controlled according to actual requirements, the practicability and the applicability of the ventilation device are greatly improved, the adjusting rotating disc with the adjusted angle can be locked and fixed through the arrangement of a locking rod and an annular fixing groove, and the practicability is high. The threaded rod is prevented from rotating under the influence of external force, and the ventilation effect stability is ensured.

A method and an artificial resuscitator device for controllable ventilation volume are provided. The artificial resuscitator includes: a gas control valve and a flow sensor set on an exhaust pipe of a respirator; a connecting tube branching off the exhaust pipe, with a three-way valve on a connecting tube that selectively communicates with a control side of the gas control valve, and a pressure relief opening on a side of the three-way valve that selectively communicates with the control side of the gas control valve; a control module that obtains a ventilation volume of the respirator based on a gas flow detected by the flow sensor and controls whether the three-way valve switches to a gas path according to the ventilation volume, to open or close the exhaust pipe through the gas control valve.

The present invention discloses a multimodal fusion method for assessing the natural ventilation of a large atrium in an exhibition building. The method comprises: acquiring multimodal data, the multimodal data comprising meteorological time series parameters, a three-dimensional building point cloud and opening geometry parameters, and air conditioning and cooling parameters; inputting the multimodal data into a multimodal fusion neural network model to obtain a natural ventilation assessment result, the natural ventilation assessment result comprising the vertical temperature distribution of the atrium and the ventilation volume of each opening in the atrium; wherein the multimodal fusion neural network model comprises a meteorological time series feature extraction module, a building geometry encoding module, an air conditioning system parameter encoding module, a cross-modal feature fusion module, a vertical temperature field prediction module, and a ventilation volume prediction module. The present invention establishes a spatiotemporal collaborative perception mechanism for meteorological time series dynamics, building space topology, and air conditioning parameter features, breaking through the technical bottlenecks of traditional methods in terms of cross-modal feature space alignment and interaction efficiency.

The utility model discloses a refrigeration house ventilation device, which relates to the technical field of refrigeration house ventilation, and comprises a ventilation pipeline and a treatment box, the inside of the treatment box is rotatably connected with a filter plate, the inside of the filter plate is provided with a filter screen, and the inside of the treatment box is rotatably connected with a baffle on one side of the filter plate. Two self-locking motors are installed on one side of the treatment box, and the output ends of the two self-locking motors are fixedly connected with the filter plate and the baffle correspondingly. Compared with the prior art, the ventilation device has the advantages that the ventilation quantity can be conveniently adjusted through the rotary filter plate and the baffle mounted in the treatment box, meanwhile, water flow can be sprayed to the filter plate and the baffle under the action of the water pump and the spray head, the filter plate and the baffle can be conveniently and comprehensively washed in cooperation with rotation of the filter plate and the baffle, and the ventilation efficiency of the refrigeration house is improved. And dust and dirt attached to the upper surface are cleaned away, air pollution is prevented from being aggravated, manual cleaning of the filter plate and the baffle is replaced, and manpower is saved.

The invention belongs to the technical field of medical equipment, and particularly relates to intelligent anesthesia equipment capable of automatically regulating and controlling the anesthesia depth and a using method thereof.The intelligent anesthesia equipment comprises an anesthesia machine, and an evaporator and a gas mixing pipe are arranged in the anesthesia machine; the conveying part comprises an anesthesia pipe, the anesthesia pipe is communicated with a flow dividing pipe, the flow dividing pipe is communicated with a C-shaped pipe set, a ventilation pipe, a gas mixing pipe and a gas feeding pipe, and light blades are arranged in the gas feeding pipe; the monitoring part is arranged in the anesthesia machine; the adjusting part comprises a lifting rod, the lifting rod is connected with a blocking ring and a rotating ring, a lead screw and a sleeve rod are connected into the lifting rod, and a gear B is arranged on the sleeve rod; the driving part comprises a lifting frame, a limiting groove and a gear C are arranged on the lifting frame, the lead screw is connected with a gear D, and the loop bar is connected with a gear E. The system can monitor the minute ventilation volume of a patient in real time, judge the state of the patient according to the monitored data, adjust the concentration of anesthetic gas according to the state of the patient, and prevent the patient from being hurt by too deep or too shallow anesthesia.

The application discloses a kind of painting workshop environment quality prediction method and prediction model establishment method, the present application selects volatile organic compound concentration as painting workshop environment quality reference index, selects volatile organic compound concentration as dependent variable, spraying time, spraying distance, air flow rate as independent variable, establishes the multiple linear regression model of painting workshop environment quality, establishes neural network model, the fitting value of multiple regression model is used as the input of neural network model together with independent variable, constructs multiple linear regression-neural network combination model, according to painting working condition, the air quality in workshop is predicted using combination model, when volatile organic compound concentration in painting workshop reaches certain threshold value, it is necessary to carry out alarm and forced ventilation.The present application can accurately and quickly calculate volatile organic compound concentration in workshop by painting workshop environment quality prediction model, so as to adjust ventilation volume in time, protect construction personnel, save energy consumption.

The present disclosure provides a smoke exhaust system, a monitoring method, device, equipment and program product of the smoke exhaust system, the smoke exhaust system comprising: an extractor hood, an auxiliary fan and a camera; an air inlet of the auxiliary fan is communicated with an air outlet of the extractor hood through an exhaust duct; a front connecting section and a rear connecting section of a shell of the auxiliary fan are transparent; the camera is arranged below the auxiliary fan and is used for shooting images of the front connecting section and the rear connecting section to monitor oil stains attached to a wall surface. The present disclosure monitors the oil stains attached to the wall surface on the front connecting section and the rear connecting section of the auxiliary fan through the camera, calculates a wind capacity based on a change amount of the oil stains before and after a preset time period, evaluates a cleanliness according to the wind capacity, the larger the wind capacity is, the better the cleanliness is, the smaller the wind capacity is, the worse the cleanliness is, and the condition (such as a ventilation volume, the cleanliness, etc.) of the smoke exhaust system can be automatically monitored to determine whether cleaning needs to be immediately performed and to predict a remaining cleaning time to the next cleaning.

The invention provides a method and device for determining the concentration maintaining time of a fire extinguishing agent, and belongs to the technical field of hydromechanics, the method comprises the following steps: step 1, calculating a normalized concentration value according to a critical concentration value C < 0% >, the ventilation quantity in unit time and unit area or / and the change multiple of the dose of the fire extinguishing agent in unit time and unit area; 2, calculating the variable quantity delta C% of the concentration; step 3, subtracting delta C% from all concentration values of which the concentrations are not less than the critical concentration value C0% in test data to obtain C3%; and step 4, acquiring the maintaining time T2 when the concentration of the plurality of fire extinguishing agent concentration sampling points is not less than C3%, wherein T2 is the maintaining time of the concentration of the fire extinguishing agent. The error of a theoretical analysis result is reduced to the minimum, and effective data support is provided for the design of a fire extinguishing system.