CN101566531A - Environment test cabin and method for obtaining test environment by applying same - Google Patents
Environment test cabin and method for obtaining test environment by applying same Download PDFInfo
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- CN101566531A CN101566531A CNA2009100844396A CN200910084439A CN101566531A CN 101566531 A CN101566531 A CN 101566531A CN A2009100844396 A CNA2009100844396 A CN A2009100844396A CN 200910084439 A CN200910084439 A CN 200910084439A CN 101566531 A CN101566531 A CN 101566531A
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Abstract
The invention provides an environment test chamber and a method for obtaining a test environment by applying the environment test chamber, wherein the environment test chamber comprises: an inner chamber, an outer chamber and an air handling system; the inner cabin is nested in the outer cabin; the air handling system is selectively connected with one of the inner compartment or the outer compartment; when the air treatment system is selected to be connected with the inner cabin, the air inlet of the air treatment system is connected with the air outlet of the inner cabin, and the air outlet of the air treatment system is connected with the air inlet of the inner cabin; when the air treatment system is selected to be connected with the outer cabin, an air inlet of the air treatment system is connected with an air outlet of the outer cabin, and an air outlet of the air treatment system is connected with an air inlet of the outer cabin; the inner deck includes: a pollution source generating device and a sampling port. The environment test chamber can well simulate a polluted indoor environment, can realize the purification performance test of the air purification equipment under the unified test condition, and provides conditions for effectively evaluating the purification effect of the air purification product on pollutants.
Description
Technical field
The present invention relates to the environmental testing field, particularly relate to a kind of environmental test chamber and use the method that it obtains test environment.
Background technology
Because expanding economy and growth in the living standard, people are more and more higher to the requirement of indoor beautification of rooms, at indoor a large amount of use decorating and renovating materials, cause the room air pollution problem more and more serious, so scientist and the public also more and more pay close attention to this type of problem.Thereupon, various air cleaning units arise at the historic moment, and more and more come into one's own, and are the common equipments that improves indoor air quality.The air purifier form that occurs on the market is varied, can be divided into physisorption filtering product, chemolysis and photochemical catalytic oxidation product, microorganism decomposition principle product, multiple composite principle purified product etc. by cleaning principle, so many purified product quality of kind and clean-up effect are uneven, and still do not have unified testing standard and clean-up effect evaluation criterion to give standard both at home and abroad.For this reason, we are badly in need of building an environmental test chamber that is used to test the air cleaning unit performance.
In realizing process of the present invention, the inventor finds that the research direction of present environmental test chamber rests on organic release rule aspect in measuring cell interior trim finishing material and the product more, and test does not still have report with the research in cabin to air cleaning unit.And the performance test of every index parameter of existing test chamber and inapplicable air cleaning unit, it can not simulate the indoor environment of being polluted well, unified test condition can't be provided for different air cleaning units, thereby can't estimate the clean-up effect of air cleaning unit effectively.
For this reason, how to build an environmental test chamber that is used to test the air cleaning unit purifying property as early as possible, the effective evaluation air cleaning unit becomes problem demanding prompt solution for the clean-up effect of all contaminations.
Summary of the invention
The object of the present invention is to provide a kind of environmental test chamber and use the method that it obtains test environment, this environmental test chamber can be simulated contaminated indoor environment well, can be various air cleaning units to be tested provides component unified contaminated air, thereby can be implemented under the unified test condition, air cleaning facility is carried out purifying property test, for the effective evaluation air clearing product provides condition for the clean-up effect of pollutant.
To achieve these goals, on the one hand, provide a kind of environmental test chamber, be used to provide the test environment that air cleaning unit is carried out performance test, wherein, having comprised: interior cabin, outer cabin and air treatment system; The cabin is nested in the described outer cabin in described; Described air treatment system as indicated optionally with described in cabin or the outer cabin one be connected; Select described air treatment system with described in cabin when being connected, the air inlet of described air treatment system is connected with the air outlet in described interior cabin, the air outlet of described air treatment system is connected with the air inlet in described interior cabin; Select described air treatment system with described outside cabin when being connected, the air inlet of described air treatment system is connected with the air outlet in described outer cabin, the air outlet of described air treatment system is connected with the air inlet in described outer cabin;
The cabin comprises in described:
The pollution source generating means in the cabin, is used to produce one or more pollutants in being arranged on;
Thief hatch is arranged on the wall in described interior cabin, is used to provide the sampling interface that the air in the cabin in described is sampled.
Preferably, described environmental test chamber wherein, also comprises:
Interior cabin air-supply air-valve, be arranged on described in the air inlet in cabin, be connected with the air outlet of described air treatment system;
Interior cabin return air air-valve, be arranged on described in the air outlet in cabin, be connected with the air inlet of described air treatment system;
Air-supply air-valve in outer cabin is arranged on the air inlet in described outer cabin, is connected with the air outlet of described air treatment system;
Outer cabin return air air-valve is arranged on the air outlet in described outer cabin, is connected with the air inlet of described air treatment system;
Select described air treatment system with described in cabin when being connected, described in cabin air-supply air-valve and interior cabin return air air-valve open, the described outer cabin air-valve of blowing cuts out with outer cabin return air air-valve;
When selecting described air treatment system to be connected with described outer cabin, described outer cabin air-supply air-valve and the unlatching of outer cabin return air air-valve, blow air-valve and interior cabin return air air-valve of described interior cabin cuts out.
Preferably, described environmental test chamber, wherein, described interior cabin also comprises:
The mixing blower fan is used for after described pollutant takes place described pollution source generating means, the air in mixing is described in the cabin.
Preferably, described environmental test chamber, wherein, the cabin body in described interior cabin and described outer cabin is connected with the bayonet socket mode by polylith storehouse plate.
Preferably, described environmental test chamber, wherein, the inwall in described interior cabin is the polishing stainless steel surface, the slit seals with the teflon bar in the described cabin.
Preferably, described environmental test chamber wherein, is filled insulating heat insulating material between the bulkhead in described outer cabin.
Preferably, described environmental test chamber, wherein, described thief hatch is four pipe dual channel modes, each passage in the described binary channels has air intake opening and return-air mouth.
Preferably, described environmental test chamber, wherein, described pollution source generating means is remote-controlled remote control pollution source generating means.
Preferably, described environmental test chamber, wherein, described pollution source generating means also comprises: heating and disperser are used for accelerating the diffusion in the cabin in described of described pollutant after generating described pollutant.
Preferably, described environment measuring device, wherein, described interior cabin air intake air-valve and interior cabin return air air-valve are double-deck air-valve.
Preferably, described environment measuring device, wherein, described air treatment system comprises as in the lower device one or more:
Air filtration unit;
Humidifier;
Well heater;
Flowmeter;
Frequency conversion fan;
Surface cooler.
Preferably, described environmental test chamber, wherein, described air filtration unit comprises: active carbon net, chemosorbent and/or air strainer.
Preferably, described environmental test chamber, wherein, the volume in described interior cabin is 30 cubic metres.
On the other hand, provide a kind of method that obtains test environment, described test environment wherein, comprising in order to air cleaning unit is carried out performance test:
Step a before test, makes air treatment system be connected with interior cabin, and the air in the internal cabin of described air treatment system carries out humiture to be regulated and purified treatment;
Step b, after air in the interior cabin after described processing reaches default humiture and requires, described outer cabin is connected with described air treatment system, and disconnect described in being connected of cabin and described air treatment system, described air treatment system makes the humiture of the air in the described interior cabin constant by the temperature of regulating the air in the described outer cabin;
Step c, after the humiture of the air in described in the cabin was constant, the control pollution sources generating means produced pollutant;
Steps d, after treating that pollutant that described pollution source generating means produces reaches pre-provisioning request, make described pollution source generating means stop to take place pollutant, and after stablizing preset time length, purify by the air in the internal cabin of air cleaning unit that is arranged on interior cabin, and gather in the described interior cabin to come air cleaning unit is carried out performance test with cleaned air passes before the purification by described thief hatch.
Preferably, described method, wherein,
Described step a comprises: open interior cabin air-supply air-valve that is arranged on described interior cabin air inlet and the interior cabin return air air-valve that is arranged on described interior cabin air outlet;
Described step b comprises: open outer cabin air-supply air-valve that is arranged on described outer cabin air inlet and the outer cabin return air air-valve that is arranged on described outer cabin air outlet; And close be arranged on described in the cabin air inlet interior cabin air-supply air-valve and be arranged on described in the interior cabin return air air-valve of cabin air outlet.
A technical scheme in the technique scheme has following technique effect:
Utilize air treatment system, can be before test handle, make the air of test usefulness meet default requirement, avoided of the influence of unfavorable air the test effect to entering as the air in the interior cabin of test site; And the cabin is nested in two cabin structures outer cabin in and reaches and optionally connect air treatment system with interior cabin or be connected air treatment system and outer cabin in utilizing, can realize the pipeline of air circulation institute warp is selected, carry out air circulation or air round-robin outer circulation in cabin and the air treatment system outside in the round-robin in interior cabin and air treatment system independently, the parameter such as the humiture of air in the cabin in thereby parameter that can be by regulating air in the outer cabin such as temperature are controlled indirectly, prevented since directly internally in the air in behaviors such as the heating of cabin gas or the humidification interior cabin of causing each contaminant component change; Thereby, environmental test chamber of the present invention can be simulated contaminated indoor environment in the reality preferably, each influence factor that influences the air cleaning unit performance test has been carried out accurate control, can carry out the performance test of air clearing product more objective, effectively, made evaluation result more accurate.
Description of drawings
Fig. 1 is the structural representation of the environmental test chamber of the embodiment of the invention;
Fig. 2 is the structural representation of the environmental test chamber of another embodiment of the present invention;
Fig. 3 is the perspective view in inside and outside cabin in the environmental test chamber embodiment illustrated in fig. 2;
Fig. 4 is the method flow synoptic diagram that utilizes the environmental test chamber acquisition test environment of the embodiment of the invention.
Embodiment
For technical matters, technical scheme and advantage that the embodiment of the invention will be solved is clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Fig. 1 is the structural representation of the environmental test chamber of the embodiment of the invention.The environmental test chamber of this embodiment is used to the test environment that air cleaning unit is carried out performance test is provided, and as Fig. 1, the environmental test chamber of this embodiment comprises: interior cabin 101, outer cabin 102 and air treatment system 103; Interior cabin is nested in the outer cabin; Air treatment system as indicated optionally with interior cabin or outer cabin in one be connected; Select air treatment system with described in cabin when being connected, the air inlet of air treatment system is connected with the air outlet in interior cabin, the air outlet of air treatment system is connected with the air inlet in interior cabin; Select air treatment system with outside cabin when being connected, the air inlet of air treatment system is connected with the air outlet in outer cabin, the air outlet of air treatment system is connected with the air inlet in outer cabin; Interior cabin 101 comprises: pollution source generating means 104 in the cabin, is used to produce one or more pollutants in being arranged on; Thief hatch 105 on the interior bulkhead in cabin, is used to the sampling interface that provides the air in the internal cabin to sample in being arranged on.Need to prove, for in the environmental test chamber of more clearly expressing the embodiment of the invention, the annexation in air treatment system and inside and outside cabin, in Fig. 1, outer cabin and interior cabin have been drawn in the left and right sides of air treatment system respectively, but this is not limited to the position relation in inside and outside cabin in the environmental test chamber of the embodiment of the invention.
When air cleaning unit being carried out the purifying property test, gather the contaminated air of using in that the environmental test chamber of the embodiment of the invention produces, the contaminated indoor environment of simulation by outside sampling apparatus by this thief hatch, and utilize different air cleaning units the clean-up effect of this air to be tested the purifying property of air cleaning unit.Particularly, air cleaning unit to be tested can be arranged in the interior cabin, during the test beginning, gather contaminated air in the interior cabin by thief hatch, test the pollutant levels of this air, the initial concentration of contaminated air in the cabin in can obtaining, then, behind air cleaning unit work preset time, the air that purified through air cleaning unit in the cabin in gathering by thief hatch again, the concentration of testing the contained pollutant of this cleaned air passes, initial concentration before relatively purifying and the concentration after the purification, can obtain the purification efficiency of this air cleaning unit, and and then can estimate the performance of this air cleaning unit.Exemplarily, in the process of test, can the preset time section collection of every interval once in air in the cabin, gathered once in one hour as every interval in air in the cabin, with the work efficiency after the test air cleaning unit work different time length.
Exemplarily, the air treatment system of this embodiment is in order to carry out adjustment, humidity regulation and/or purified treatment to air.By the processing of air of air treatment system to test usefulness, can avoid testing the influence of being not suitable for to the test effect with air, as humiture be not suitable for and/or air in pollutant more etc. to testing the harmful effect of effect.
Utilize the environmental test chamber of this embodiment, in the process that obtains to be used for to the test environment of various air cleaning units, by selecting air treatment system to be connected with interior cabin, make air in air treatment system and interior cabin, carry out interior circulation, or select air treatment system to be connected with outer cabin, make air air treatment system with outside carry out outer circulation in the cabin, circulation and outer circulation in can realizing independently as required, the parameter such as the humiture of air in the cabin in thereby parameter that can be by regulating air in the outer cabin such as temperature are controlled indirectly, prevented since directly internally in the air in behaviors such as the heating of cabin gas or the humidification interior cabin of causing each contaminant component change, help guaranteeing the reliability of air cleaning unit The performance test results.Fig. 2 is the structural representation of the environmental test chamber of another embodiment of the present invention.As Fig. 2, the environmental test chamber of this embodiment is combined by interior cabin 1 and outer cabin 2, and interior cabin 1 is nested in the outer cabin 2.In the environmental test chamber of this embodiment, air treatment system comprises: be installed in multi-functional air filter cleaner 6, industrial humidifier 7, electric heater 8, orifice flowmeter 9, frequency conversion fan 10 and surface cooler 11 in the airduct 19.By selecting to start the above-mentioned one or more devices in the air treatment system, internally the air in cabin and/or the outer cabin carries out adjustment, humidity regulation and/or purified treatment.
The cabin body in interior cabin 1 and outer cabin 2 is connected with the bayonet socket mode by polylith storehouse plate, and the installation for convenience detach of this mounting means can adapt to various cabins volume requirement, and exemplarily, interior volume of compartment is long-pending can to reach 30m
3 Interior cabin 1 comprises: mixing blower fan 18, pollution source generating means 17, thief hatch 15, be arranged in cabin air inlet and the interior cabin air-supply air-valve 4 that is connected with the air outlet of air treatment system, be arranged in cabin air outlet and the interior cabin return air air-valve 14, the stainless steel stent 16 that are connected with the air inlet of air treatment system, form the main body part of detecting of environmental test chamber.The inwall in interior cabin 1 all is the polishing stainless steel surface, exemplarily, this stainless label is more than 304, the slit is all with no adsorbing teflon bar sealing in the cabin, like this can be so that the leakproofness in the cabin is good, and, reduced the harmful effect factor in the test process because all material surfaces are chemical inertness, smooth nothing absorption, corrosion-resistant.
Bulkhead such as antetheca in thief hatch 15 is arranged on, the sampling interface of external sampling apparatus is provided by this thief hatch, can external sampling apparatus, sample with the air in the internal cabin, preferably, this thief hatch adopts four pipe dual channel modes, and each passage in this binary channels has air intake opening and return-air mouth simultaneously.Adopt the thief hatch of four pipe dual channel modes, its good effect is: binary channels can be carried out parallel sampling simultaneously, makes data more reliable; Binary channels has air intake opening and return-air mouth simultaneously, can avoid owing to pressure changes the negative pressure that produces, and the cabin body of effectively having avoided therefore causing leaks.
Pollution source generating means 17 exemplarily, is arranged on the stainless steel stent 16.Wherein, stainless steel stent is used to be provided with the pollution source generating means, the pollution source generating means also can adopt other mode be arranged in the cabin, exemplarily, as the mode of suspention etc.This pollution source generating means is used for quantitatively taking place one or more pollutants, as one or more chemical pollutants.The quantitative generation of pollutant makes that the generation of pollutant is controlled, makes experimental implementation more accurate, and the result is more reliable.Exemplarily, this pollution source generating means is distance type pollution source generating meanss, in its telepilot can be arranged on out of my cabin, a situation arises at the control of remote control out of my cabin pollutant by the operator, because the pollutant that the pollution source generating means takes place is harmful usually, pass through straighforward operation like this, guaranteed staff's personal safety out of my cabin.Exemplarily, but not as restriction, the patent No. that can utilize the applicant is carried out the generation of pollutant for the pollution source generating means of ZL200720173127.9 or ZL200820107332.X.
Among this embodiment, interior cabin air-supply air-valve 4 and interior cabin return air air-valve 14 are double-deck air-valve, utilize double-deck air-valve can reduce leakage rate, the better tightness in cabin in making makes that by guaranteeing leakproofness in the cabin component of air keeps stable to guarantee the accuracy of test in the test process.In this example, interior cabin air-supply air-valve 4 and in cabin return air air-valve 14 can be arranged in the airduct or on the interior bulkhead.Exemplarily, the quantity of interior cabin air-supply air-valve 4 and interior cabin return air air-valve 14 is not limited to one.As Fig. 1, better for the leakproofness in cabin in making, can in the airduct of interior cabin air intake, add cabin air intake air-valve 5 in another.Should interior cabin air intake air-valve can be individual layer or double-deck air-valve.
Fill insulating heat insulating material between the bulkhead in outer cabin 2, reduced the heat interchange between outer cabin and the environment like this, thus can be energy-conservation, and temperature control is more convenient reliable.Be provided with outer cabin air intake air-valve 3 and outer cabin return air air-valve 12 in the outer cabin.As Fig. 2, exemplarily, outer cabin air intake air-valve 3 is arranged on the air inlet in outer cabin and is connected with the air outlet of air treatment system, and outer cabin return air air-valve 12 is set in place in the air outlet in outer cabin and with the air inlet of air treatment system and is connected.
In the air treatment system of this embodiment, comprise in the multi-functional air filter cleaner 6: active carbon net, chemosorbent, high efficiency particle air filter etc. are used to remove airborne particle and number of chemical pollutant.Filler in each parts of multi-functional air filter cleaner can carry out deep purifying to particulate in air and number of chemical pollutant, assurance enters the air height cleaning in the cabin, background concentration is low, thereby reduces the influence factor that air cleaning unit is detected, and can improve accuracy of test.Wherein, frequency conversion fan, surface cooler, industrial humidifier and electric heater are used for environmental test chamber round-robin air is carried out humidification and regulates temperature, have suitable humiture to guarantee the air in the test chamber, can simulate contaminated indoor environment better.Orifice flowmeter is used for controlling the flow of the air that enters test chamber.Frequency conversion fan is used for air-supply, and surface cooler is used for refrigeration.
As Fig. 2, the air outlet of the air treatment system of this embodiment is connected with outer cabin air intake air-valve with interior cabin air intake air-valve, and the air inlet of air treatment system is connected with outer cabin air-out air-valve with interior cabin air-out air-valve; When cabin air intake air-valve and interior cabin air-out air-valve, air treatment system is connected with interior cabin in opening, and air can carry out interior circulation in air treatment system and interior cabin; Open outer cabin air intake air-valve and outside during cabin air-out air-valve, air treatment system is connected with outer cabin, air can air treatment system with outside carry out outer circulation in the cabin.Outside the cabin air-valve cuts out in opening during the air-valve of cabin, can independently carry out the interior circulation of air, in the cabin air-valve cuts out outside opening during the air-valve of cabin, can independently carry out the outer circulation of air, thereby switch by the control air-valve, can be independently internally the air in cabin or the outer cabin carry out adjustment, humidity regulation and/or purified treatment, thereby in air circulation process, can realize the humiture adjusting in inside and outside cabin and/or the high purification of surrounding air.
Exemplarily, this air treatment system also has an outside air inlet, is used to import air outside, and exemplarily, this outside air inlet is exposed in the extraneous air.
Exemplarily, interior cabin and/or outside also be provided with the air parameter harvester in the cabin, exemplarily, as temperature and/or humidity collector, particularly, as temperature and/or moisture probe.
Exemplarily, among this embodiment, can directly or by operating the control device that is connected with inside and outside cabin air-valve open or close the air-valve in inside and outside cabin by the operator.This control device is connected with each air-valve.This control device also can be connected with each device in the air treatment system, is used for controlling the switch of each device of air treatment system, to control the operation that air in the test chamber is carried out.This control device also can be arranged in the air parameter harvester in cabin and/or outer cabin such as temperature and/or humidity collector be connected, be used to obtain the humiture in interior cabin and/or outer cabin.Exemplarily, also can the humiture value that the air in the inside and outside cabin is desired to reach be set, and the humiture in cabin and/or outer cabin reaches preset value in regulating by switch of each device of control air treatment system by control device.Exemplarily, this control device comprises: proportional plus integral plus derivative controller is the PID controller.Exemplarily, this control device is embodied as a control panel.
Fig. 3 is the perspective view in inside and outside cabin in the environmental test chamber of the above embodiment of the present invention.Fig. 3 clearly show that the nest relation in inside and outside cabin.As Fig. 3, among this embodiment, interior bulkhead is provided with two interior cabin air intake air-valves 4; For operator and air cleaning unit to be measured enter in the cabin convenient, interior bulkhead is provided with a door 21, is provided with a view window 22 for observing convenient also this door.
Fig. 4 utilizes the environmental test chamber of the embodiment of the invention to obtain the schematic flow sheet of the method for test environment.The test environment that utilizes this embodiment method acquisition is in order to carry out performance test to air cleaning unit.As Fig. 4, this method comprises:
Step 401 before test, makes air treatment system be connected with interior cabin, and the air in the internal cabin of air treatment system carries out humiture to be regulated and purified treatment;
Step 402, after the humiture of the air in the interior cabin after processing reaches default humiture and requires, outer cabin is connected with air treatment system, and being connected of cabin and air treatment system in disconnecting, air treatment system makes the humiture of the air in the interior cabin constant by the temperature of regulating the air in the outer cabin;
Step 403, after the humiture of the air in interior cabin was constant, the control pollution sources generating means produced pollutant;
Step 404, after treating that pollutant that the pollution source generating means produces reaches pre-provisioning request, make the pollution source generating means stop to take place pollutant, and after stablizing preset time length, purify by the air in the internal cabin of air cleaning unit in cabin in being arranged on, and before purifying in the cabin in the thief hatch collection, come air cleaning unit is carried out performance test with cleaned air passes.
After obtaining above-mentioned test environment by step 404, the air cleaning unit in can being arranged on by evaluation in the cabin comes the performance of the air cleaning unit to be tested in the cabin in being arranged on is tested to the clean-up effect of the air in the cabin in this.Particularly, during the test beginning, gather contaminated air in the interior cabin by thief hatch, test the pollutant levels of this air, the initial concentration of contaminated air in the cabin in can obtaining, then, behind air cleaning unit work preset time, the air that purified through air cleaning unit in the cabin in gathering by thief hatch again, test the concentration of the contained pollutant of this cleaned air passes, through this initial concentration relatively with the concentration after purifying, can obtain the purification efficiency of this air cleaning unit, and and then can estimate the performance of this air cleaning unit.Exemplarily, in the process of test, can the preset time section collection of every interval once in air in the cabin, gathered once in one hour as every interval in air in the cabin, with the work efficiency after the test air cleaning unit work different time length.
Environmental test chamber below in conjunction with the foregoing description is explained in more detail to said method:
Before the test, the humiture in interior cabin 1 is set by control panel, cabin air entering and returning air-valve 4,5,14 in opening, open frequency conversion fan 10, electrical heating 8 and industrial humidifier 7, air enters circulation by interior cabin return air air-valve 14, pass through surface cooler 11 successively, frequency conversion fan 10, after passing through flowmeter 9 Control Flow, by electrical heating 8 heating, carry out humidification through industrial humidifier 7 subsequently, the air that humiture is suitable enters multi-functional air filter cleaner 6, respectively with airborne particle, number of chemical pollutant removal.Finally, clean air in the cabin, uses for test in interior cabin air-valve is delivered to.Circulation in this circulation claims when regulating humiture, is finished the purification of air, has avoided the influence of unfavorable air to the test effect like this; The humiture probe in cabin is transferred to control panel with the signal that records in being arranged on, treat that humiture reaches requirement after, send instruction by control panel, open outer cabin air entering and returning air-valve 3,12, close interior cabin air entering and returning air-valve 4,5,14, industrial humidifier 7 simultaneously.After outer cabin air enters air treatment system by outer cabin air-valve 12, get back to outer cabin by outer cabin air-valve 3, this circulation claims outer circulation, and cabin 1 temperature and humidity is constant in being used for controlling indirectly, prevent from each contaminant component in the air to be impacted owing to directly change the humiture of interior cabin gas;
After treating that humiture is constant, pollutant quantitatively takes place in cabin 2 remote control pollution source generating meanss 17 outside, opens mixing blower fan 18 simultaneously, and gas produces eddy flow in the cabin, makes air be uniformly distributed in the whole test space.After treating that a certain amount of pollutant enters interior cabin, the remote closing generator stops to take place pollutant.After a period of stabilisation, sample by four pipe binary channels of thief hatch 15, the contaminated air input air cleaning unit to be tested of sampling out is begun to test by the sampling system of outside.
The multiple gases chemical pollutant when the test beginning, quantitatively takes place in indoor environment testing cabinet according to technique scheme proposes fast, and makes pollutant be uniformly distributed in interior cabin as the test space as early as possible.In the test process, interior cabin complete closed does not accurately influence gas composition in the cabin in the control cabinet humiture time by outer cabin temperature control.Like this, the environmental test chamber of the embodiment of the invention provides unified test environment for the purifying property of testing different air cleaning units, the factor of having avoided other non-air purification plant is to purifying result's influence, thereby guaranteed in the test process, the concentration change that is air cleaning unit air pollutants in internal cabin works, and then has guaranteed the objectivity and the validity of test result.
After test finishes, but gas in the multi-functional air filter cleaner cleaning systems makes the background concentration value reduce to limit value in the conformance with standard in the cabin in, when having avoided direct opened door like this owing to excessive concentration in the cabin, problems such as the personnel that may cause poisoning, environmental pollution.Thereby, technical scheme of the present invention can be simulated contaminated indoor environment in the reality preferably, each influence factor that influences the air cleaning unit performance test is accurately controlled, can be carried out the performance test of air clearing product more objective, effectively, make evaluation result more accurate.
The above is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the described principle of the embodiment of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (13)
1. environmental test chamber, being used to provides the test environment that air cleaning unit is carried out performance test, it is characterized in that, comprising: interior cabin, outer cabin and air treatment system; The cabin is nested in the described outer cabin in described; Described air treatment system as indicated optionally with described in cabin or the outer cabin one be connected; Select described air treatment system with described in cabin when being connected, the air inlet of described air treatment system is connected with the air outlet in described interior cabin, the air outlet of described air treatment system is connected with the air inlet in described interior cabin; Select described air treatment system with described outside cabin when being connected, the air inlet of described air treatment system is connected with the air outlet in described outer cabin, the air outlet of described air treatment system is connected with the air inlet in described outer cabin;
The cabin comprises in described:
The pollution source generating means in the cabin, is used to produce one or more pollutants in being arranged on;
Thief hatch is arranged on the wall in described interior cabin, is used to provide the sampling interface that the air in the cabin in described is sampled.
2. environmental test chamber according to claim 1 is characterized in that, also comprises:
Interior cabin air-supply air-valve, be arranged on described in the air inlet in cabin, be connected with the air outlet of described air treatment system;
Interior cabin return air air-valve, be arranged on described in the air outlet in cabin, be connected with the air inlet of described air treatment system;
Air-supply air-valve in outer cabin is arranged on the air inlet in described outer cabin, is connected with the air outlet of described air treatment system;
Outer cabin return air air-valve is arranged on the air outlet in described outer cabin, is connected with the air inlet of described air treatment system;
Select described air treatment system with described in cabin when being connected, described in cabin air-supply air-valve and interior cabin return air air-valve open, the described outer cabin air-valve of blowing cuts out with outer cabin return air air-valve;
When selecting described air treatment system to be connected with described outer cabin, described outer cabin air-supply air-valve and the unlatching of outer cabin return air air-valve, blow air-valve and interior cabin return air air-valve of described interior cabin cuts out.
3. environmental test chamber according to claim 1 is characterized in that, described interior cabin also comprises:
The mixing blower fan is used for after described pollution source generating means produces described pollutant, the air in mixing is described in the cabin.
4. environmental test chamber according to claim 1 is characterized in that, the cabin body in described interior cabin and described outer cabin is connected with the bayonet socket mode by polylith storehouse plate.
5. environmental test chamber according to claim 1 is characterized in that, the inwall in described interior cabin is the polishing stainless steel surface, and the slit seals with the teflon bar in the described cabin.
6. environmental test chamber according to claim 1 is characterized in that, fills insulating heat insulating material between the bulkhead in described outer cabin.
7. environmental test chamber according to claim 1 is characterized in that, described thief hatch is four pipe dual channel modes, and each passage in the described binary channels has air intake opening and return-air mouth.
8. environmental test chamber according to claim 1 is characterized in that, described pollution source generating means is remote-controlled remote control pollution source generating means.
9. according to claim 1 or 8 described environmental test chambers, it is characterized in that described pollution source generating means also comprises: heating and disperser are used for accelerating the diffusion in the cabin in described of described pollutant after generating described pollutant.
10. environment measuring device according to claim 1 is characterized in that, described air treatment system comprises as in the lower device one or more:
Air filtration unit;
Humidifier;
Well heater;
Flowmeter;
Frequency conversion fan;
Surface cooler.
11. environmental test chamber according to claim 10 is characterized in that, described air filtration unit comprises: active carbon net, chemosorbent and/or air strainer.
12. the environmental test chamber of an application rights requirement 1 obtains the method for test environment, described test environment is characterized in that in order to air cleaning unit is carried out performance test, comprising:
Step a before test, makes air treatment system be connected with interior cabin, and the air in the internal cabin of described air treatment system carries out humiture to be regulated and purified treatment;
Step b, after air in the interior cabin after described processing reaches default humiture and requires, described outer cabin is connected with described air treatment system, and disconnect described in being connected of cabin and described air treatment system, described air treatment system makes the humiture of the air in the described interior cabin constant by the temperature of regulating the air in the described outer cabin;
Step c, after the humiture of the air in described in the cabin was constant, the control pollution sources generating means produced pollutant;
Steps d, after treating that pollutant that described pollution source generating means produces reaches pre-provisioning request, make described pollution source generating means stop to take place pollutant, and after stablizing preset time length, purify by the air in the internal cabin of air cleaning unit that is arranged on interior cabin, and gather in the described interior cabin to come air cleaning unit is carried out performance test with cleaned air passes before the purification by described thief hatch.
13. method according to claim 12 is characterized in that,
Described step a comprises: open interior cabin air-supply air-valve that is arranged on described interior cabin air inlet and the interior cabin return air air-valve that is arranged on described interior cabin air outlet;
Described step b comprises: open outer cabin air-supply air-valve that is arranged on described outer cabin air inlet and the outer cabin return air air-valve that is arranged on described outer cabin air outlet; And close be arranged on described in the cabin air inlet interior cabin air-supply air-valve and be arranged on described in the interior cabin return air air-valve of cabin air outlet.
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