CN106093311B - Smell, VOC and floating harmful substance test device - Google Patents
Smell, VOC and floating harmful substance test device Download PDFInfo
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- CN106093311B CN106093311B CN201610643735.5A CN201610643735A CN106093311B CN 106093311 B CN106093311 B CN 106093311B CN 201610643735 A CN201610643735 A CN 201610643735A CN 106093311 B CN106093311 B CN 106093311B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
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Abstract
The invention discloses a kind of smells, VOC and floating harmful substance test device, including constant temperature and/or constant-humidity clean room, constant temperature and/or constant-humidity clean is indoor is at least installed with a smell, VOC test chamber, the smell, VOC test chamber includes cabin, cabin is equipped at least one odor thief hatch, cabin is connected with for carrying out gas volume compensation to cabin inside in gas sampling process to prevent the polluted gas outside cabin because draught head enters the intracorporal gas compensation device in cabin, gas compensation device is mounted on the internal or external of cabin, or gas compensation device is opened big mouth sealing and is fixed on the bulkhead of cabin, it further include the External Circulation Filtration Apparatus being installed in outside cabin.Both be able to achieve cabin ventilation/it is closed lower to gas sampling, the burst size of the volatile harmful gasess such as formaldehyde, the VOC volatilized in testee is detected, it is avoided that environmental factor or other uncertain factors interfere influence to test result again, stability is good, and measuring accuracy is high.
Description
Technical field
The present invention relates to volatile organic matter test equipment technical fields, are to be related to a kind of smell, VOC more specifically
And floating harmful substance test device, for testing the assessment and test of smell, VOC and other floating harmful substances.
Background technique
The volatile harmfuls such as formaldehyde, volatile organic matter (VOC) present in the meeting of the materials such as existing furniture, Automobile Products
Gas can be done harm to huamn body if the concentration when volatile harmful gases is more than certain range.Reasonably collect mattress
In the volatile harmful gasess such as formaldehyde, VOC be one of important link of detection technique.
Currently, industrial, also there are many systems that the volatile harmful gasess such as PARA FORMALDEHYDE PRILLS(91,95), VOC carry out sample detecting, still
Existing detection system has the following disadvantages:
(1) detection system is tested in common environment, temperature, humidity and the composition of air of ambient enviroment and dense
The environmental factors such as degree can have an impact the precision of test；
(2) when testing, pollution air original in test chamber body is not discharged in advance for the test cabin of the detection system,
The volatile harmful gasess such as the formaldehyde, the VOC that cause testee to evaporate are mixed with pollution air original in test chamber body,
Affect the precision of test；
(3) when sampling, after the exhaust check valve in the test cabin of the detection system is opened, the intracorporal gas meeting of test chamber
Discharge causes the intracorporal air pressure of test chamber to reduce, and the air meeting draught head in ambient enviroment enters in test chamber body at this time, influences
The precision of test.
In addition, it is conventionally used to the system that the volatile harmful gasess such as PARA FORMALDEHYDE PRILLS(91,95), VOC carry out sample detecting, it cannot be first to survey
The examination intracorporal gas in cabin is purified, and the volatile harmful gasess such as remaining formaldehyde, VOC will affect inspection in gas in test chamber body
The precision of survey.
Summary of the invention
It is an object of the invention to overcome drawbacks described above in the prior art, provide one kind can be avoided environmental factor or its
His uncertain factor interference effect caused by test result is to improve the smell, VOC and floating harmful substance of measuring accuracy
Test device.
To achieve the above object, technical solution provided by the invention is as follows: a kind of smell, VOC and floating harmful substance are surveyed
Trial assembly is set, including constant temperature and/or constant-humidity clean room, be installed in the constant temperature and/or at least one indoor smell of constant-humidity clean,
VOC test chamber, the smell, VOC test chamber include cabin, and the cabin is equipped at least one odor thief hatch, the cabin
It is connected with for carrying out gas volume compensation to cabin inside in gas sampling process to prevent the polluted gas outside cabin
Because draught head enters the intracorporal gas compensation device in cabin, the gas compensation device is mounted on the internal or external of cabin, or
The gas compensation device is opened big mouth sealing and is fixed on the bulkhead of cabin, further includes the outer circulation filtering being installed in outside cabin
Device, the External Circulation Filtration Apparatus include the outer circulation pipeline being connected in cabin cleaning, are installed on outer circulation pipeline
4th switch valve, circulating fan and filter device.
Preferably, the cabin at least one side is glass structure, infrared heating is provided with outside the glass structure
Device or sunlight irradiation light control the intracorporal temperature in cabin or intensity of illumination.
Preferably, the gas compensation device includes for filling the clean gas of storage in gas sampling process
Enter to realize in cabin the soft tonifying Qi bag of gas volume compensation, the tonifying Qi bag is located at the outside of cabin, the tonifying Qi bag into
Gas end is connected with feeder, and the outlet side of the tonifying Qi bag is connected to the air inlet of cabin, and the feeder includes clean
Net gas source is connected with first switch valve between the inlet end of the tonifying Qi bag and the outlet side of clean gas gas source, described
Second switch valve, the inlet end and clean gas of the tonifying Qi bag are connected between the outlet side of tonifying Qi bag and the air inlet of cabin
Flow measuring unit is also connected between the outlet side of gas source, between the inlet end of the tonifying Qi bag and the outlet side of clean gas gas source also
It is connected with flow measuring unit.
Preferably, the gas compensation device includes for bulging to occur in gas sampling process and then to cabin
Realize that the soft compensation bag of gas volume compensation, the compensation bag are located at the inside of cabin, the disengaging gas of the compensation bag in inside
End is connected on the bulkhead of cabin.
Preferably, the gas compensation device includes for invaginating in gas sampling process to cabin and then to cabin
Internal portion realizes that the soft compensation bag of gas volume compensation, the compensation bag are located at the inside of cabin, and the compensation bag sealing is solid
It is scheduled on the big mouth of the bulkhead of cabin.
Preferably, the inner wall of the cabin is equipped with the anti-absorbent coating for preventing volatile organic matter from adsorbing.
Preferably, stirring blower is equipped in the cabin, the stirring blower and the horse being installed in the cabin
Up to transmission connection, the cabin is equipped with hatch door, and the inside of the cabin or outer wall are equipped with heating and temperature controlling device and/or refrigeration is adjusted
Warm device.
Preferably, being connected with third switch valve at the odor thief hatch.
Preferably, being also installed with humidity control apparatus on the pipeline that the clean gas gas source is connected with cabin.
Preferably, being installed with sample stent or hook in the cabin.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention provides a controllable temperature, the cabin of relative humidity and background concn, which is arranged in perseverance
In temperature and/or constant-humidity clean room, a stable standard test environment is provided for test, environmental factor is avoided or other is true
Determine influence of the factor to test result, improves measuring accuracy.
2, gas compensation device of the invention can carry out gas appearance to cabin inside during gas sampling is extracted
Product compensation, to prevent the polluted gas outside cabin from entering cabin because of draught head, avoids environmental factor or other uncertain factors
Influence to test result, improves measuring accuracy.
3, the present invention can be realized cabin in ventilation/closed lower to gas sampling, to the formaldehyde volatilized in testee,
The burst size of the volatile harmful gasess such as VOC is detected.
4, the present invention is provided with infrared ray outside the glass structure and adds using cabin at least one side is designed as glass structure
Thermal or sunlight irradiation light, to control the intracorporal temperature in cabin or intensity of illumination, energy testing product is in illumination condition
The situation of change of the volatile organic matters such as lower formaldehyde, VOC.
5, External Circulation Filtration Apparatus of the present invention outside cabin before detection, first starts External Circulation Filtration Apparatus to cabin
The volatile organic matters such as interior remaining formaldehyde, VOC are purified, and measuring accuracy is improved.
Detailed description of the invention
Fig. 1 is the first smell, VOC and the structural schematic diagram for floating harmful substance test device of the present invention；
Fig. 2 is second of smell, VOC and the structural schematic diagram for floating harmful substance test device of the present invention；
Fig. 3 is the third smell, VOC and the structural schematic diagram for floating harmful substance test device of the present invention.
With reference to the accompanying drawings and examples to smell of the present invention, VOC and floating harmful substance test device make into
One step explanation.
Specific embodiment
It is smell, VOC and the preferred example for floating harmful substance test device of the present invention below, does not therefore limit
Determine protection scope of the present invention.
Embodiment one
Referring to FIG. 1, the embodiment of the present invention one provides a kind of smell, VOC and floating harmful substance test device, including
Constant temperature and/or constant-humidity clean room 35, at least one smell being installed in the constant temperature and/or constant-humidity clean room 35, VOC are tested
Cabin 36, the smell, VOC test chamber 36 include cabin 1, and cabin 1 is equipped at least one odor thief hatch 5, and cabin 1 connects useful
In in gas sampling process to carrying out gas volume compensation inside cabin 1 to preventing the polluted gas outside cabin because of draught head
Into the gas compensation device in cabin 1, it further includes being installed in outside cabin 1 which, which is located at the outside of cabin 1,
External Circulation Filtration Apparatus 30, the External Circulation Filtration Apparatus 30 includes the outer circulation pipeline 301 being connected in cabin 1, dress
If the 4th switch valve 302, circulating fan 303 and filter device 304 on outer circulation pipeline 301, before detection, first start outer circulation
Filter device 30 purifies the volatile organic matters such as remaining formaldehyde, VOC in cabin 1, is conducive to improve measuring accuracy.
1 at least one side of cabin is glass structure, is provided with infrared heating device or sunlight outside the glass structure
Irradiation light, can testing product volatility situation of change such as formaldehyde, VOC under illumination condition.
Wherein, cabin 1 is equipped with hatch door 11, and cabin 1 is in air-tight state, and stirring blower 8 is equipped in cabin 1, stirs blower 8
It is sequentially connected with the motor 9 being installed in cabin 1, stirring blower 8 can be uniform to the Gas Stirring inside cabin 1.Cabin 1
Outer wall or inside can be equipped with filter device, heating and temperature controlling device 12 and/or refrigeration register 13 (such as: being mounted on cabin wall
On electronic refrigerating sheet) etc. equipment, can control temperature, relative humidity and background concn, be volatile organic matter test
A stable standard test environment is provided, avoids outside environmental elements or other uncertain factors to the shadow of test result
It rings, ensure that measuring stability, improve measuring accuracy.
Preferably, volatile organic matter is adsorbed on the inner wall of cabin 1 to influence measuring accuracy, cabin in order to prevent
1 inner wall is equipped with anti-absorbent coating.
As shown in Figure 1, in the present embodiment, gas compensation device includes soft tonifying Qi bag 41, tonifying Qi bag 41 is located at cabin 1
Outside, the inlet end of tonifying Qi bag 41 is connected with feeder, and the outlet side of tonifying Qi bag 41 is connected to the air inlet of cabin 1
14.Tonifying Qi bag 41 can store and discharge clean gas, can be filled with the clean gas of storage in gas sampling process
Gas volume compensation is realized in cabin 1.
When it is implemented, feeder may include clean gas gas source 2, the inlet end and clean gas gas of tonifying Qi bag 41
First switch valve 3 is connected between the outlet side in source 2, wherein first switch valve 3 can be on clean gas gas source 2 carry
Switch valve is also possible to switch valve set in addition, as long as it is i.e. implementable to can be used in cutting air inlet.
In addition, can connect second switch valve 6 between the outlet side of tonifying Qi bag 41 and the air inlet of cabin 1.Clean gas
The flow measuring unit 7 for coutroi velocity and flow can also be connected between the outlet side of body gas source 2 and the inlet end of tonifying Qi bag 41.
The inflation of feeder deflates orientation quantitatively, reduces operating error.
Third switch valve 10 is connected at odor thief hatch 5, it can be by the gas in cabin 1 after opening third switch valve 10
Discharge carries out gas sampling.Certainly, odor thief hatch 5 can also be not provided with third switch valve 10, and odor thief hatch 5 is settable
It can be one or more in the quantity of 1 either side of cabin, odor thief hatch 5.
Preferably, humidity control apparatus is also installed on the pipeline that the clean gas gas source 2 is connected with cabin 1
33, the humidity of the pure air entered in cabin 1 is adjusted.
It is installed with sample stent or hook in the cabin 1, convenient for rotating test specimen 34 in cabin 1.
Air inlet with valve or without valve, exhaust outlet are installed in the cabin 1, exhaust outlet connects exhaust pump, control
Pressure in the capacity control cabinet body of exhaust pump.
It is a kind of to utilize smell, VOC and the test method for floating harmful substance test device, comprising the following steps:
(1) constant temperature and humidity cabin 1 is allowed to provide the standard test environment of a constant temperature, constant humidity and default cleanliness, and will be by
Object is surveyed to be put into cabin 1；
(2) it by open and close first switch valve 3 and second switch valve 6, is evacuated in tonifying Qi bag 41 by vacuum evacuation device
Gas；
(3) first switch valve 3 is opened, and is filled in gas compensation device 41 by 7 constant speed of flow measuring unit and quantitative control
Clean gas；
(4) second switch valve 6 and third switch valve 10 are opened, is filled with clean gas to cabin 1, cleaning is replaced in cabin 1
Pollution air；
(5) when gas washing is completed, second switch valve 6 and third switch valve 10 are closed, and is made in tonifying Qi bag 41 full of clean gas
Body；
(6) it when odor thief hatch 5 samples, opens third switch valve 10 and is sampled, and open simultaneously second switch
Valve 6 is able to enter the clean gas in gas sampling extraction process in tonifying Qi bag 41 in cabin 1 and realizes gas volume compensation,
To prevent the polluted gas outside cabin 1 from entering cabin 1.
The clean gas of standard is passed through in cabin 1 before testing, original polluted gas, energy in cabin 1 can be discharged
It is enough that gas washing and gas displacement are carried out to cabin 1, improve measuring accuracy.Cleaning and in sampling process, in tonifying Qi bag 41
Gas, which can be quantitatively filled into cabin 1, realizes gas volume compensation, it is therefore prevented that the polluted gas outside cabin 1 is because of draught head entrance
Cabin 1, further improves measuring accuracy.
Embodiment two
Referring to FIG. 2, second embodiment of the present invention provides another smell, VOC and floating harmful substance test device, packet
Constant temperature and/or constant-humidity clean room 35 are included, at least one smell, the VOC being installed in the constant temperature and/or constant-humidity clean room 35 are surveyed
Cabin 36 is tried, the smell, VOC test chamber 36 include cabin 1, and cabin 1 is equipped at least one odor thief hatch 5, and cabin 1 is connected with
For compensating to prevent the polluted gas outside cabin because of air pressure to progress gas volume inside cabin 1 in gas sampling process
Difference enters the gas compensation device in cabin 1, the smell of the embodiment of the present invention two, VOC and floating harmful substance test device with
The smell of above-described embodiment one, VOC and float harmful substance test device structure it is largely identical, something in common is no longer superfluous
It states, the difference is that the design of gas compensation device.
As indicated with 2, the gas compensation device include in gas sampling process occur bulging so as to cabin 1 inside
Realize that the soft compensation bag 42 of gas volume compensation, compensation bag 42 are located at the inside of cabin 1, the air inlet and outlet end connection of compensation bag 42
On the bulkhead of cabin 1.
Preferably, compensation bag 42 can be set as the sealed soft bag made of fluoride materials.Specifically, the fluoride material
Material can be polytetrafluoroethylene (PTFE) or other fluorides.Wherein, the compensation bag made of fluoride materials can prevent compensation bag
Outer wall adsorbs volatile organic matter, improves measuring accuracy.
Before equipment test sample, need to be discharged compensation bag in some or all of gas.When sample decimation cabin is intracorporal
When gas, bulging occurs for compensation bag, to compensate the intracorporal gas volume in cabin, it is therefore prevented that the polluted gas outside cabin is because of draught head
Into cabin, measuring accuracy is improved.
Embodiment three
Referring to FIG. 3, the embodiment of the present invention three provides another smell, VOC and floating harmful substance test device, packet
Constant temperature and/or constant-humidity clean room 35 are included, at least one smell, the VOC being installed in the constant temperature and/or constant-humidity clean room 35 are surveyed
Cabin 36 is tried, the smell, VOC test chamber 36 include cabin 1, and cabin 1 is equipped at least one odor thief hatch 5, and cabin 1 is connected with
For compensating to prevent the polluted gas outside cabin because of air pressure to progress gas volume inside cabin 1 in gas sampling process
Difference enters the gas compensation device in cabin 1, the smell of the embodiment of the present invention three, VOC and floating harmful substance test device with
The smell of above-described embodiment one, VOC and float harmful substance test device structure it is largely identical, something in common is no longer superfluous
It states, the difference is that the design of gas compensation device, which opens big mouth sealing and be fixed on the bulkhead of cabin.
As shown in figure 3, the gas compensation device includes for invaginating in gas sampling process to cabin and then to cabin 1
Inside realizes that the soft compensation bag 43 of gas volume compensation, compensation bag 43 are located at the inside of cabin 1, and compensation bag 43 can be by outlet
Mouth, which amplifies, to be sealed in turn on the big mouth 15 that the bulkhead for being fixed on cabin 1 opens up.
Preferably, compensation bag 43 can be set as the sealed soft bag made of fluoride materials.Specifically, the fluoride material
Material can be polytetrafluoroethylene (PTFE) or other fluorides.Wherein, the compensation bag made of fluoride materials can prevent compensation bag
Outer wall adsorbs volatile organic matter, improves measuring accuracy.
Before equipment test sample, need to be discharged compensation bag in some or all of gas.When sample decimation cabin is intracorporal
When gas, compensation bag invaginates to cabin internal direction, to compensate the intracorporal gas volume in cabin, it is therefore prevented that the dirt outside cabin
Dye gas improves measuring accuracy because draught head enters cabin.
It should be noted that the smell of embodiment two and embodiment three, VOC and floating harmful substance test device
The air inlet of cabin can connect feeder, which can be clean gas gas source described in embodiment one.
In conclusion the present invention can either realize cabin in ventilation/closed lower to gas sampling, to volatilizing in testee
The burst size of the volatile harmful gasess such as formaldehyde, VOC out is detected, but can be avoided environmental factor or other it is uncertain because
Element interference effect caused by test result ensure that the stability of test, improve measuring accuracy.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (8)
1. a kind of smell, VOC and floating harmful substance test device, it is characterised in that: including constant temperature and/or constant-humidity clean room
(35), it is installed in the constant temperature and/or at least one smell, VOC test chamber (36) in constant-humidity clean room (35), the smell,
VOC test chamber (36) includes cabin (1), and the cabin (1) is equipped at least one odor thief hatch (5), and the cabin (1) is even
It is connected to for compensating to prevent the polluted gas outside cabin to progress gas volume inside cabin (1) in gas sampling process
Because draught head enters the gas compensation device in cabin (1), the gas compensation device is mounted on the outside of cabin (1), described
Gas compensation device includes realizing gas volume for the clean gas of storage to be filled in cabin (1) in gas sampling process
The soft tonifying Qi bag (41) of compensation, the tonifying Qi bag (41) are located at the outside of cabin (1), the inlet end of the tonifying Qi bag (41) and
Feeder is connected, and it further includes being installed in cabin that the outlet side of the tonifying Qi bag (41), which is connected to the air inlet (14) of cabin (1),
The external External Circulation Filtration Apparatus (30) of body (1), the External Circulation Filtration Apparatus (30) include be connected in cabin (1) it is outer
Circulating line (301) installs the 4th switch valve (302), circulating fan (303) and filter device on outer circulation pipeline (301)
(304), cabin (1) at least one side is glass structure, is provided with infrared heating device or sunlight outside the glass structure
Irradiation light.
2. smell according to claim 1, VOC and floating harmful substance test device, it is characterised in that: the gas supply dress
It sets including clean gas gas source (2), is connected between the inlet end of the tonifying Qi bag (41) and the outlet side of clean gas gas source (2)
Have first switch valve (3), is connected with second switch valve between the outlet side of the tonifying Qi bag (41) and the air inlet of cabin (1)
(6), flow measuring unit (7) are also connected between the inlet end of the tonifying Qi bag (41) and the outlet side of clean gas gas source (2).
3. smell according to claim 1, VOC and floating harmful substance test device, it is characterised in that: the cabin
(1) inner wall is equipped with the anti-absorbent coating for preventing volatile organic matter from adsorbing.
4. smell according to claim 1, VOC and floating harmful substance test device, it is characterised in that: the cabin
(1) stirring blower (8) is equipped in, stirring blower (8) is sequentially connected with the motor (9) being installed on the cabin (1), institute
Cabin (1) is stated to be equipped with heating and temperature controlling device (12) equipped with hatch door (11), the inside of the cabin (1) or outer wall and/or freeze
Register (13).
5. smell according to claim 1, VOC and floating harmful substance test device, it is characterised in that: the odor is adopted
Third switch valve (10) are connected at sample mouth (5).
6. smell according to claim 3, VOC and floating harmful substance test device, it is characterised in that: the cleaning gas
Humidity control apparatus (33) are also installed on the pipeline that body gas source (2) is connected with cabin (1).
7. smell according to claim 1, VOC and floating harmful substance test device, it is characterised in that: the cabin
(1) sample stent or hook (34) are installed in.
8. smell according to claim 1, VOC and floating harmful substance test device, it is characterised in that: the cabin
(1) the interior air inlet being installed with valve or without valve, exhaust outlet, exhaust outlet connect exhaust pump, control the capacity of exhaust pump
Pressure in control cabinet body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610643735.5A CN106093311B (en) | 2016-08-08 | 2016-08-08 | Smell, VOC and floating harmful substance test device |
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| CN201610643735.5A CN106093311B (en) | 2016-08-08 | 2016-08-08 | Smell, VOC and floating harmful substance test device |
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| CN106093311B true CN106093311B (en) | 2019-03-19 |
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