Range hood testing equipment

Range hood testing equipmentDesign basis

according to GB/T17713—2011Range hoodHow to translate Appendix to the standardFOdor reduction testverifymethod”The requirements ，

Design research Develop a set of testing equipment to complete this experiment and meet the testing requirements.2、 Composition of experimental apparatus

The device consists of two main parts ： The first part includes: a simulated kitchen laboratory, odor generation system, sampling system

Integrated electrical control system. The second part includes an odor content measurement system and a data processing system. This technical solution is only applicable to thePart of the implementation will be elaborated.

3 3

1. Range hood testing equipmenttechnical indicatorsThe size requirements for the experimental room of the simulated kitchen are: lengthX Width x Height:3.5 m×2.5 m×2.5 m ，22 m

2. ± 2 m1 Requirements for airtightness of simulated kitchen laboratory: After measuring the highest odor concentration in the laboratory, 5Odor measured after hours

3Concentration, with a decrease value not greater than%. Power of heater:1702KW/220V10Temperature control accuracy:2±

4Accuracy of ℃ thermocouple: ± ℃．Each drip:300g ±1gRoom temperature distilled water and12g ±0.1g Mixed solution of butanone (analytical grade);Time for each drip:30min

5±15s

The form of the tested machine:

1Outward and Recirculation

4、 Technical solutionSimulated kitchen laboratory (1)Adopting an assembled and well sealed warehouse plate structure, the material is double-sided color steel, and the plate thickness is 75mm At the same time, internal additionspread

PPPlate sealing welding.Internal dimensions: LengthX Width x Height:3.5 m×2.5 m

×

2.5 m(Control cabinets, samplers, gas chromatography analysis workbenches, and observation channels need to be reserved outside the laboratory.)(2)There are two doors to the laboratory:，One is the gate for personnel to enter and exit,Door opening size:1800mm ×800mmOne is the small air intake door (ventilation window), with a door opening size of:700mm

×350mm (3) Install an observation window on one wall of the laboratory, using5mm The glass; (4)3A fan should be placed in the center of the laboratory to assist in the uniform diffusion of odors, with a flow rate of250m/h3±

50m4/()Place a diffuser screen next to the ventilation window in the laboratory, size:1000mm