GB/T17713-2011 range hood odor reduction test device
one. Design Basis:
The G B / T17713-201 1 "hood" standard Appendix F "of the odor reduction test methods" requirements, the design of a test apparatus manufactured by RESEARCH to complete this test, and meets the test requirements.
two. The composition of the test device The device consists of two major components :
The first part includes: a laboratory simulation kitchen, smell generation system, sampling system, and electrical control system. The second part includes an odor content measurement system and a data processing system. This technical solution only describes the implementation of the first part.
three. Technical indicators
1. Simulated kitchen test room size requirements: length × width × height: 3.5 m × 2.5 m × 2.5 m, 22 m ± 2 m
2. Simulate the tightness of the test chamber in the kitchen: After the highest odor concentration is measured in the test chamber, the odor concentration measured after one hour is less than 5%.
3. Heater power: 2KW/220V. Temperature Control Accuracy: 170±10°C Thermocouple Accuracy:±°C
4. Each drop: Mixture of 300g ± 1g room temperature distilled water and 12g ± 0.1g butanone (analytically pure); time for each drop: 30min ± 15s
5. The form of the tested machine: Outflow and circulation
four. Technical solutions
1. Simulated kitchen test room
(1) assembled, a good seal library plate structure, a double-sided color steel material, thickness 75mm, while the inner seal weld overlay plate PP.
Internal dimensions: length × width × height: 3.5 m × 2.5 m × 2.5 m
(External space needs to be reserved for control cabinets and samplers, meteorological chromatographic worktables, and observation channels)
(2) There are two doors in the lab:
One is the entrance door for personnel. Door size: 1800mm×800mm One is a small inlet door (ventilation window), Door size: 700mm×350mm
(3) Install a observation window on one wall of the laboratory, using 5mm glass; (4) A fan with uniform odor diffusion should be placed in the middle of the test chamber with a flow rate of 250m3/h ± 50m3/h.
(4) Distribute diffuser screen near the ventilation window in the test room, size: 1000mm×700mm
2. Odor generation system
(1) Dripping funnel should complete the dripping of approximately 315 mL of liquid within 30 minutes. The volume of the reservoir is 500 mL. (2) To achieve automatic drip, use the on and off of the relay, so that people can control the start and end of drip in the test room.
(3) The evaporating dish should be able to quickly evaporate the dripping liquid. Electric heating furnace, power 2KW
3. Electrical control system
(1) Provide operating power to the hood being tested.
(2) Provide an operating power supply to the electric heating furnace and automatically control its operating temperature within 170±10°C. A PID temperature control table and solid state relay are used for adjustment. The temperature sensing element is a type K thermocouple.
Through the control of the relay, automatic dripping is achieved, and personnel do not need to enter the room.
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