Odor Reduction Test Room
This device is suitable for testing the odour reduction performance of cooker hoods.
Technical Parameters:
A. This device is based on the requirements of Appendix F of the GB/T17713-2011 standard and is suitable for testing the odour degree reduction performance of range hoods.
B. equipment performance, technical requirements and technical parameters.
C.function
This test chamber can simulate the actual environment of the kitchen, which is composed of test chamber, temperature control system, dripping system, sampling system, etc. respectively.
D.technical parameters
Working power supply: AC220V 50Hz
Air source: compressed air 0.4-0.6MPa (user to provide)
Testing station: single station
Working medium: butanone C4H80
Test model and specifications: top outlet hood , size 1000 (L) × 500 (W) × 1400 (H) within
Temperature at the bottom inside the evaporating dish: room temperature - 200°C controllable, measuring accuracy: ±2°C. The temperature is constant at the standard state of 170℃±10℃ during the test.
Dripping system: A peristaltic pump is used to continuously squeeze the work, for regular and quantitative dripping of liquid into the pan heated to 170°C±10°C on the electric furnace. The position of the pan is set as standard, with the distance between the drip tip and the bottom of the pan being 225 mm ± 25 mm. The odour medium is a mixture of 300 g ± 1 g of distilled water at room temperature and 12 g ± 0.1 g of butanone (analytical purity). The entire mixture must be dripped at a uniform rate within 30 min ± 15 s. At the end of dosing, the mixture in the pan should be completely evaporated at the latest 1 min.
Drip needle: replaceable medical needle.
Control parameters: automatic test state and workflow in accordance with standard requirements
Electric furnace power range: 200-2000W (adjustable)
Sampling no-load flow >5L/min. negative pressure: better than -75KPa
Time control: 0 to 99 minutes 99 seconds (settable)
Equipped with a fan for uniform room airflow, with a flow rate of 250m3/h ± 50m3/h.
Laboratory hermeticity requirements: after 1h, the set odour concentration, its drop value should be no more than 5%.
Test flat-bottomed iron pan, diameter (200mm±20mm), height 125mm, bottom thickness at least 8mm.
Structural solutions
1, the laboratory is a closed room, length × width × height of 3.5m × 2.5m × 2.5m, volume: 22m3 ± 2m3, materials used: the box material using a double layer of colour steel plate assembled into a total thickness of about 75mm, in a wall installed with a sealed door for personnel access. The test chamber is well sealed and has glass observation windows.
2、The hood and the cabinets on both sides are installed on the wall of the laboratory with a length of 3.5m. The cabinets are made of environmentally friendly high-density board with quartzite countertops and the doors are made of toughened glass doors, which are beautiful and generous.
3, laboratory device a workbench, hood installation wood board convenient and practical, with removable removable device. The test stand can be adjusted up and down by electric drive.
4、The bench is equipped with a 200-2000W (adjustable) induction hob.
5、There is an air outlet at the top of the bench where the hood is hung.
6、A closed glass observation window is installed on the wall directly opposite the hood and the electric stove, with an air inlet hole below the observation window that can be opened and closed.
7. A fan for uniform diffusion of odour should be placed in the middle of the laboratory, with a flow rate of 250m3/h±50m3/h.
8、The laboratory door and window side of the installation of its sealing: 1h after the set odour concentration, its decline value should not be greater than 5%.
10、There is a general control console outside the laboratory, the temperature control, drip control and sampling control are all controlled in a centralised way, with a colour touch screen full Chinese menu display of PLC intelligent control system.
11, equipment using PID microcomputer controller temperature control, temperature control system by the regulator, temperature controller and K-type armoured thermocouple (allowable error ± 2 ℃), using high-precision temperature transmitter sampling.
12、The thermocouple probe is in direct contact with the bottom of the pot on the electric furnace.
13、Temperature at 40mm from the bottom edge of the pot: room temperature - 200℃, measuring accuracy ±2℃ (standard state 170℃±10℃), can automatically maintain the required temperature range.
14、The drip system consists of a dividing funnel, evaporation dish, adjustable precision drip control device, the medium is butanone; all the mixture needs to be dripped within 30min±15s, the mixture in the pan at the end of metering should all evaporate at the latest 1min.
15、The distance between the drip tip and the bottom of the pan is 225mm±25mm, the odour medium is 300g±1g of distilled water at room temperature and 12g±0.1g of butanone (analytically pure) mixture.
16. The sampling system consists of a sampler, a membrane pump, a glass tee and connecting pipes.
17、The membrane pump is of electronic type, diaphragm vacuum pump.
18, vertical ground in the same line every 500mm equally spaced four sampling points, with four equal length, the inner diameter of 2.5mm polytetrafluoroethylene (PTFE) tube were fixed in the four sampling points, four sampling tubes every two through the glass tee convergence, the final convergence into a total tube, and respectively and the sampler and membrane pump combination. The sampler completes the sampling while the membrane pump is pumping.
19、The floor is covered with smooth tiles.
20、The gas chromatograph is capable of testing the different gas odour components and reading the maximum odour concentration in the room (optional).
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