40 results about "Smog chamber" patented technology

A low profile optical smoke chamber structure with a top cover incorporating airflow slots, an intermediate annular air channel, a depending light shield wall surrounding an interior detection chamber where the top cover is interengagable with a base member where the light shield wall is spaced from the base member so as to provide minimal deflection of ambient airflow into the detection chamber while preventing impingement of ambient light therein.

The invention relates to an on-line analysis device for volatile carbonyl compounds. The on-line analysis device comprises a power supply and program control box, a sampling and thermo-analysis device and a GC-MS, wherein the power supply and program control box is used for controlling and adjusting the working state of a whole system, and is connected to the sampling and thermo-analysis device through a circuit; a carrier gas cylinder is connected with the sampling and thermo analysis device; the sampling and thermo-analysis device can perform collection and thermo-analysis on volatile carbonyl compound samples synchronously; the samples after thermal-analysis pass through a fused quartz tube and enter into the GC-MS to perform separation and quantification on carbonyl compounds. Sampling stages and thermo-analysis stages of all sampling pipes do not interfere with one another, and can be performed synchronously, so that the continuous monitoring of the carbonyl compounds in ambient air is achieved. The on-line analysis device can not only be used for observing the carbonyl compounds in conventional ambient air, but also be used for continuously detecting a secondary organic aerosol oxidation product simulated by a smog chamber in a lab.

The invention discloses a double-layer smog chamber capable of controlling temperature, which can control the temperature of photochemical reaction. The smog chamber consists of a photochemical reaction cabin, an adjustment and control cabin, a temperature control system, and a sampling analysis system. The main body of the smog chamber has a double-layer structure, and the outer layer and the inner layer are all made of transparent materials; a space between the outer layer and the inner layer is the adjustment and control cabin which is provided with an adjustment and control scavenging air valve; and a space enclosed by the inner layer is the photochemical reaction cabin which is provided with a reaction scavenging air valve and a sampling port. The double-layer smog chamber can adjust the temperature of the photochemical reaction, and simultaneously ensures that the photochemical reaction in the photochemical reaction cabin is not influenced by various temperature adjustment devices, so the repeatability of experiments and the reliability of experiment results are improved. Besides, the outer-layer adjustment and control cabin can play a role in protecting the inner-layer photochemical reaction cabin, and prevent gas in the photochemical reaction cabin from being polluted.

The invention discloses a pressure-adjustable double layer smog chamber, which can be used to adjust the pressure of photochemical reaction. The smog chamber comprises a photochemical reacting chamber, a regulating and controlling chamber, a temperature controlling system, an air circulating system and a sample analyzing system. The main body of the smog chamber is structured in double layers, the outer layer is made of rigid transparency material; the inner layer is made of transparency material; the regulating and controlling chamber is a space between the outer layer and inner layer; the regulating and controlling chamber is provided with a scavenging valve; and the photochemical reacting chamber is a space encircled by the inner layer and is provided with a scavenging valve and a sampling opening. The outer layer regulating and controlling chamber can protect the inner layer photochemical reacting chamber and prevent the gas in the reacting chamber from being polluted. The double layer smog chamber provided in this invention can adjust the pressure of the photochemical reaction, accurately control the experiment condition, and increase the repeatability of the experiment and reliability of the experiment result.

The invention provides a method for indirectly measuring the dry deposition velocity of PM2.5 on the surface of a plant. The method comprises the following steps: preparing simulated PM2.5 with the particle size of 2.5 [mu]m; determining the initial concentration and measurement time length of the PM2.5 in a smog chamber in a testing process, wherein a concentration time-varying rule of the PM2.5 is consistent with a stable exponential decaying rule; measuring concentration time-varying rules of the PM2.5 in the smog chamber under an empty condition and a condition of existence of a leaf sample respectively, and performing data fitting to calculate decaying velocity constants j and k of two curves respectively; calculating the dry deposition velocity Vd of the PM2.5 on the leaf sample to be measured according to formula (I) (specified in the original document) on the basis of the above data. According to the method, the formula obtained by observation data fitting is adopted for calculation, so that system errors can be greatly reduced, the measurement accuracy can be improved, and moreover, the method is low in experimental cost and experimental time consumption and more convenient and easier to operate.

The invention relates to a portable and foldable smog chamber, and belongs to the technical field of the environment test. The technical problem that the existing smog chamber is hard to move, fixed in volume and cannot be simultaneously applied to multiple environments is solved. The smog chamber comprises a smog chamber body, a foldable and retractable unit, a fixation unit and a clamping unit;a smog chamber outer wall, a first fixed plate and a second fixed plate are arranged on the smog chamber body; a gas inlet and a gas outlet are arranged on the first fixed plate; a gas and particulatematter monitoring unit is arranged on the second fixed plate; the fixation unit comprises the first fixed rod to the fourth fixed rod with the same structure; the foldable and retractable unit comprises the first to the fourth foldable and the fourth foldable and retractable rods which have the same structure and are arranged in parallel; the first to the fourth fixed rods are hinged with the first to the fourth foldable and retractable rods. The smoke chamber volume is variable and the movement is convenient; the smog chamber can be used for pollution source collection, photochemical reaction and monitoring outdoor, and can be used for the simulation research of the process for generating secondary organic aerosol through volatile organic matter.

The invention relates to the medical experiment equipment technical field, and provides a smog inhalation injury model device which comprises a smog chamber, a pipeline, a hollow temperature adjustment pipe and an injury chamber. The smog chamber is provided with a smog outlet; the injury chamber is provided with a smog inlet; two opposite ends of the pipeline are respectively in connection with the smog outlet and the smog inlet, and allow the smog chamber to communicate with the injury chamber; the smog chamber is provided with a heating device; the injury chamber is provided with a taking port used for taking an experimental animal; the hollow temperature adjustment pipe is provided with an inlet and an outlet facilitating temperature adjustment agent entering and removal, and is winded on the pipeline. The smog inhalation injury model device can simulate a real fire smog inhalation scene, have a simple and reasonable structure, and effectively eliminate interference factors caused by thermal injuries.

The invention discloses a folding type shisha hookah which comprises an upper cover, a hookah body and a cigarette holder. The bottom end of the upper cover is connected with the hookah body. The cigarette holder penetrates through one side of the top end of the upper cover and is then connected with the hookah body. A filtering chamber and a smog chamber are arranged in the hookah body. A baffleis arranged between the filtering chamber and the smog chamber and provided with a hole. The filtering chamber and the smog chamber each contain filtering liquid. The smog chamber is communicated withthe cigarette holder. The side, away from the cigarette holder, of the upper cover is provided with a smoke pan. The smoke pan is in transmission fit with the cigarette holder through a mechanical transmission mechanism so that the cigarette holder and the smoke pan can be synchronously folded and unfolded. The folding type shisha hookah is convenient to carry, tar produced after cigarette combustion can be conveniently removed, and life of people is facilitated.

A smoking device includes a pipe made of an elongated glass tube having an open first end and an open second end. An internal surface of the elongated glass tube includes a narrowed portion defining a narrowed diameter opening. The narrowed portion separates chambers within the elongated glass tube. The chambers include a material chamber from the second open end to the narrowed portion, and a smoke chamber defined from the narrowed portion to the first open end. A cap includes an open end and output openings. The cap is placed over the open first end or the open second end. The pipe further includes a polymer coating sealed to an outer surface of the elongated glass tube.

The invention relates to an atmospheric aerosol smog system for measuring particle size distribution of particulates in a simulation environment. The atmospheric aerosol smog system comprises a combustion device for simulating open burning of a biomass, an aerosol smog chamber for simulating an atmospheric pollutant to discharge to an atmosphere, and a particulate particle size and concentration measuring instrument, wherein the combustion device, the aerosol smog chamber and the particulate particle size and concentration measuring instrument are connected sequentially. The atmospheric aerosol smog system for measuring the particle size distribution of the particulates in the simulation environment provided by the invention simultaneously has three functions, and simulates the process ofthe open burning of the biomass to discharge the atmospheric pollutant accurately and authentically; the physicochemical reaction of the atmospheric pollutant, generated by open burning of crop straw,at each height of a convection layer or even an advection layer is simulated artificially, controllably and repeatedly; meanwhile, the influences of factors such as complex weather and terrain in anactual environment are eliminated; and the particle size distribution of the particulates in the simulation environment is obtained accurately via a WPS-1000XP wide-range particle spectrometer, and the degree of accuracy is high, so the defect that the particle size distribution of the particulates cannot be measured or is measured inaccurately is prevented.

This invention relates in general to a pellet-fired smoker which includes a housing having a smoke chamber defined within it. A hopper holding pellet fuel supplies pellets through one or more augers to one or more fire pots configured to enhance smoking a food product by increasing the smoke flowing to a food product at various cooking temperatures.

Compared with the prior art, a smog chamber disclosed by the invention comprises a transparent smog chamber body; a gas exchange port, arranged on the transparent smog box body and used for introducing test reaction gas; a gas reaction chamber, arranged in the transparent smoke box body; and a concentration measuring mechanism, arranged in the gas reaction chamber and used for measuring and displaying the concentration of the test reaction gas particles. Compared with the prior art, the technical scheme provided by the invention has the advantages that the structure is simple, the practicability is high, and the concentration value of the test reaction gas in the box can be accurately measured.

The invention provides a movable smoke box, at least including: a foldable circular chassis, an umbrella-shaped support, and a protective film laid on the chassis and the umbrella-shaped support, and a collection hole is opened on the protective film , the umbrella-shaped bracket is fixed to the chassis through a plurality of fixing clips. The movable smog box of the present invention is easy to assemble when in use, and easy to disassemble when put away, and is suitable for deploying mechanism observations on waste gas from pollution sources, photochemical reactions of semi-volatile organic compounds, secondary generation of organic aerosols, etc. in smaller occasions. Compared with the current large and super-large smoke boxes, the movable smoke box of the present invention occupies a small area, is easy to move, is convenient to replace, and greatly reduces the cost of production, use, cleaning and maintenance. It can be built in the laboratory, automatically Stations, super stations, mobile vehicles, platforms near pollution sources, etc. any flat place. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial application value.

The invention relates to a smog chamber with vertical temperature gradient change. The smog chamber comprises a chamber body and a temperature grading control device, wherein the temperature grading control device comprises a compressor, a condenser, a drying filter and a multi-stage temperature control part which are sequentially connected by a pipeline to form a circulating system. The invention also provides a working method of the smog chamber. The smog chamber has the advantages that the different vertical atmosphere temperature changes can be simulated by the temperature grading control device, the simulation is closer to the real atmosphere condition, and the atmosphere vertical structure and the influence on atmosphere pollution is deeply understood; especially, the structure of a thermal inversion layer is simulated, and the influence on the atmosphere pollution by the thermal inversion layer is studied.

The invention provides a method and a system for measuring coagulation efficiency of submicron particulate matter on plant leaves as well as a medium. The method comprises steps as follows: a particulate matter preparation step: submicron particulate matter is prepared to simulate atmospheric particulate matter with the size marked as D0; a dust retention simulation step: a plant leaf sample is pretreated and then put in a smog chamber connected with an aerosol generator, certain submicron particulate matter concentration conditions are kept, and the sample is subjected to dust retention and adsorption for a preset time. Compared with methods for measuring the sizes of particulate matter on the leaves, the method has the advantages that the defects of small view range, inseparable propertyof water-soluble ingredients and the like can be overcome by use of an X ray microscope, high-accuracy 3D imaging in a larger view can be realized, data of each particulate matter in all structures of the obtained leaves can be accurately obtained in combination of software, observation is more direct, and particulate size calculation is more scientific and reliable.

The invention discloses a smoke alarm sensitivity detection device, comprising a case body whose lower end is provided with an opening, a smog generating device, a concentration detection circuit, a control circuit and a blowing device. The concentration detection circuit is connected to the control circuit; the control circuit is connected with the blowing device; the control circuit is provided with a concentration reference range; the case body is mounted on an assembly line which seals the lower end opening of the case body, and a sealed smog chamber is formed in the case body; a lower part of a front end of the case body is provided with an entrance where a first flexible door is arranged, and a lower part of a rear end of the case body is provided with an exit where a second flexible door is arranged; the smog generating device is arranged at the rear part of the smog chamber; the case body is provided with a separator plate therein; a distance is kept between the front end of the separator plate and the case body; a distance is kept between the rear part of the separator plate and the smog generating device; an upper flue is formed between the separator plate and the top of the case body; a lower flue is formed between the separator plate and the assembly line. The detection device has advantages such as high detection precision, strong operability and high detection efficiency.

The invention provides a volume-adjustable smog chamber, capable of being used for atmospheric environment simulation tests. The volume-adjustable smog chamber comprises a first support, a second support and a third support arranged between the first support and the second support, wherein the third support is fixedly connected with the second support by multiple supporting rods, and the third support is fixedly connected with the first support by multiple slide rails; a sliding support capable of moving along the slide rails is supported among the slide rails, and a Teflon gas bag is arranged between the sliding support and the second support. According to the volume-adjustable smog chamber, by arranging the sliding support, the sliding support can be moved along the slide rails, so as to obtain any required test volume between minimum design volume and maximum design volume of the Teflon gas bag, and any test volume requirement can be met; the design of the volume-adjustable smog chamber can meet the volume requirements of different tests.

The invention discloses a heat-exchange dedusting device. The heat-exchange dedusting device comprises a shell, wherein a connecting device is arranged at the lower end of the shell; the connecting device is provided with a hot air inlet; a water inlet is formed on the lower part of the shell; a separating baffle is arranged in the shell; a cold water area is formed between the shell and the separating baffle; a warm water area is formed in the separating baffle; an upper smog chamber is arranged on the upper part of the shell, and a lower smog chamber is arranged on the lower part of the shell; the lower smog chamber is provided with a fume outlet; and a dedusting device is arranged in the separating baffle. The heat-exchange dedusting device can be used as the upper half body of a boiler and also can connect the smoke outlet of the boiler with the fume inlet of the connecting device, most heat in hot fume is absorbed by water, and dust in the fume is removed by the dedusting device at the same time, so that the dual aims of surplus heat utilization and environmental emission are fulfilled.

The invention discloses a method for reducing noise of an air cleaning device of an outdoor photochemical comprehensive experiment system. The method for reducing the noise of the air cleaning device for the outdoor photochemical comprehensive experiment system comprises the steps: a pipeline used for conveying clean air is arranged so that the diameter of the pipeline is gradually enlarged; a plurality of noise reduction rings arranged in parallel are arranged in the pipeline after the diameter is enlarged; a stainless steel support used for supporting a fan of a condensing device is arranged in a clean air inlet and stainless steel thermometer screens are respectively arranged at the periphery of the stainless support; a quartz glass fiber roller is further arranged in the stainless steel support; and a smog chamber body of a smog chamber faces the outside portion of the position of the clean air inlet and a piece of transparent glass is arranged, tightly attached to the outer side of the smog chamber body and fixed on a frame of the smog chamber. The method for reducing the noise of the air cleaning device for the outdoor photochemical comprehensive experiment system provides a plurality of structures for comprehensive noise reduction and noise reducing effect is good.

The invention relates to an aerosol system for measuring a concentration of polycyclic aromatic hydrocarbons in atmospheric particulates. The aerosol system comprises a combustion device for simulating open burning of a biomass, an aerosol smog chamber for simulating an atmospheric pollutant to discharge to an atmosphere, and a particulate mass concentration measuring device, wherein the combustion device, the aerosol smog chamber and the particulate mass concentration measuring device are connected sequentially. The system provided by the invention simultaneously has three functions, and simulates the process of the open burning of the biomass to discharge the atmospheric pollutant accurately and authentically; the physicochemical reaction of the atmospheric pollutant, generated by open burning of crop straw, at each height of a convection layer or even an advection layer is simulated artificially, controllably and repeatedly; meanwhile, the influences of factors such as complex weather and terrain in an actual environment are eliminated; and efficient capture, concentration and concentration test of the polycyclic aromatic hydrocarbons in the atmospheric particulates in an atmospheric environment are simulated via an online monitoring system, so the purposes of accurately collecting, capturing, concentrating and testing the polycyclic aromatic hydrocarbons in the atmosphericparticulates are achieved.

A smoke detector with an audible alarm wherein the smoke detection chamber is also an acoustic chamber for spreading the sound waves generated by the piezoelectric sounder as alarm signal. A slim profile can be obtained.

The invention discloses a pressure-adjustable double layer smog chamber, which can be used to adjust the pressure of photochemical reaction. The smog chamber comprises a photochemical reacting chamber, a regulating and controlling chamber, a temperature controlling system, an air circulating system and a sample analyzing system. The main body of the smog chamber is structured in double layers, the outer layer is made of rigid transparency material; the inner layer is made of transparency material; the regulating and controlling chamber is a space between the outer layer and inner layer; the regulating and controlling chamber is provided with a scavenging valve; and the photochemical reacting chamber is a space encircled by the inner layer and is provided with a scavenging valve and a sampling opening. The outer layer regulating and controlling chamber can protect the inner layer photochemical reacting chamber and prevent the gas in the reacting chamber from being polluted. The double layer smog chamber provided in this invention can adjust the pressure of the photochemical reaction, accurately control the experiment condition, and increase the repeatability of the experiment and reliability of the experiment result.

The invention discloses a method for reducing noise of an air cleaning device of an outdoor photochemical comprehensive experiment system. The method for reducing the noise of the air cleaning device for the outdoor photochemical comprehensive experiment system comprises the steps: a pipeline used for conveying clean air is arranged so that the diameter of the pipeline is gradually enlarged; a plurality of noise reduction rings arranged in parallel are arranged in the pipeline after the diameter is enlarged; a stainless steel support used for supporting a fan of a condensing device is arranged in a clean air inlet and stainless steel thermometer screens are respectively arranged at the periphery of the stainless support; a quartz glass fiber roller is further arranged in the stainless steel support; and a smog chamber body of a smog chamber faces the outside portion of the position of the clean air inlet and a piece of transparent glass is arranged, tightly attached to the outer side of the smog chamber body and fixed on a frame of the smog chamber. The method for reducing the noise of the air cleaning device for the outdoor photochemical comprehensive experiment system provides a plurality of structures for comprehensive noise reduction and noise reducing effect is good.

The invention relates to the technical field of electronic atomization devices, in particular to an atomizer capable of adjusting the atomization amount and an adjusting method thereof.The atomizer comprises a power supply rod, an atomization tool movably installed at one end of the power supply rod and an atomization core installed between the power supply rod and the atomization tool, and the atomization core is used for atomizing essential oil; the cigarette holder is installed at one end of the atomizing tool and used for the mouth to suck out smoke, the smoke adapter is rotatably installed in the atomizing tool, and a plurality of smoke cavities for storing smoke with different concentrations are arranged in the smoke adapter. The smoke guide rod capable of sliding along with sucking is arranged in the atomizing tool, smoke is sucked out through the cigarette holder by means of the smoke through hole in the smoke guide rod, and in the sliding process of the smoke guide rod, the maximum sliding height of the smoke guide rod can be controlled by controlling the sucking force; therefore, smog in the smog chambers with different smog concentrations can be sucked.

The invention provides a method and a system for measuring coagulation efficiency of submicron particulate matter on plant leaves as well as a medium. The method comprises steps as follows: a particulate matter preparation step: submicron particulate matter is prepared to simulate atmospheric particulate matter with the size marked as D0; a dust retention simulation step: a plant leaf sample is pretreated and then put in a smog chamber connected with an aerosol generator, certain submicron particulate matter concentration conditions are kept, and the sample is subjected to dust retention and adsorption for a preset time. Compared with methods for measuring the sizes of particulate matter on the leaves, the method has the advantages that the defects of small view range, inseparable propertyof water-soluble ingredients and the like can be overcome by use of an X ray microscope, high-accuracy 3D imaging in a larger view can be realized, data of each particulate matter in all structures of the obtained leaves can be accurately obtained in combination of software, observation is more direct, and particulate size calculation is more scientific and reliable.

The present invention relates to a capture hood for capturing the waste air above cooking points, production devices and the like, comprising a vapour chamber, a suction-extraction chamber and an air-supply chamber, said chambers extending horizontally and parallel to one another in a longitudinal direction, wherein - the vapour chamber is open at the bottom and tapers toward the top, - the suction-extraction chamber is separated from the vapour chamber by a filter or a separator, wherein the filter or the separator forms an inclined boundary of the vapour chamber which tapers toward the top, and - the air-supply chamber tapers toward the bottom and merges at its lower end with a curved deflection region which issues into a blow-out opening which is arranged at the lower end of the vapour chamber opposite the suction-extraction chamber such that feed air which is blown into the air-supply chamber from above exits from the blow-out opening horizontally or obliquely upward in the direction of the filter or of the separator. The capture hood further comprises a negative-pressure chamber which is arranged between the vapour chamber and the air-supply chamber, wherein the negative-pressure chamber is closed on all sides with the exception of a suction opening at its lower end, said suction opening issuing, in the region of the inside radius of the curved deflection region of the air-supply chamber, into said deflection region, and wherein the negative-pressure chamber and the air-supply chamber are separated from one another along an induction region, which adjoins the suction opening or the deflection region at the top, by a wall which has a plurality of individual apertures which are arranged in succession in the longitudinal direction of the capture hood.

The invention relates to an optical experiment instrument, in particular to a multifunctional optical experiment device manufactured by a waste projector light source and a smog chamber, the problem that students are misled by an existing optical instrument light path board is solved, and meanwhile the effect of an optical experiment is enhanced by ingeniously utilizing strong light of a waste projector. The device comprises a light source chamber body and a smog chamber body, and light source components used by the light source chamber body are waste projector light source components: a 240wbromine tungsten lamp and a reflective bowl; a condenser lens is provided; a Fresnel condenser with a strong magnet can move back and forth; a transformer is arranged below a base; a 45-degree plane mirror is arranged above the bromine tungsten lamp; a small hole is formed in an upper cover plate of the chamber body and is inserted into an insertion seam of the smog chamber during a small hole imaging experiment; a light source chamber door with a hinge is convenient to open to adjust the position of the Fresnel condenser; the smog chamber body comprises a smog chamber light incident port; a movable optical bench is provided; a mosquito-repellent incense box insertion opening comprises a smog chamber body upper cover plate and a small-hole cover plate; and a frosted glass imaging screen and a transparent glass observation hole are arranged.

The invention provides a smog chamber, which belongs to the technical field of atmospheric chemical reaction experiments. The smog chamber includes a framework, an obstacle crossing supporting pole, achamber body, and a temperature control assembly; rolling wheels are disposed on the bottom of the framework; the obstacle crossing supporting pole is detachably installed on the outer sides of the rolling wheels; the obstacle crossing supporting pole extends from the edge of the rolling wheels, and a protruding end is used for abutting against the ground and the rolling wheels are raised and anobstacle is crossed by the forward thrust force; the chamber body is fixed in the framework; a temperature probe is arranged in the chamber body; ventilation holes are disposed on the chamber wall ofthe chamber body; the ventilation holes are used for introducing a reaction gas and connecting a monitoring instrument; and the temperature control assembly is fixed on the framework and is provided with a heat exchange element that is closely attached to the outer wall of the chamber body. The smog chamber provided by the invention can conveniently move between indoors and outdoors, and is also provided with a temperature control device to ensure that the temperature inside the chamber body is maintained at the temperature required for an experiment.

The invention discloses a heat-exchange dedusting device. The heat-exchange dedusting device comprises a shell, wherein a connecting device is arranged at the lower end of the shell; the connecting device is provided with a hot air inlet; a water inlet is formed on the lower part of the shell; a separating baffle is arranged in the shell; a cold water area is formed between the shell and the separating baffle; a warm water area is formed in the separating baffle; an upper smog chamber is arranged on the upper part of the shell, and a lower smog chamber is arranged on the lower part of the shell; the lower smog chamber is provided with a fume outlet; and a dedusting device is arranged in the separating baffle. The heat-exchange dedusting device can be used as the upper half body of a boiler and also can connect the smoke outlet of the boiler with the fume inlet of the connecting device, most heat in hot fume is absorbed by water, and dust in the fume is removed by the dedusting device at the same time, so that the dual aims of surplus heat utilization and environmental emission are fulfilled.