DMS oil separation test device for range hood

1、 Introduction to the Oil Separation Test Device for Range Hood:
The oil separation test device for range hood is suitable for testing the oil separation performance of range hood according to the relevant requirements of Appendix E of GB_17713-2011. The oil separation degree is the ratio of the amount of oil separated by the range hood to the amount of oil contained in the oil fume gas. The experimental device simulates the environment of a kitchen and consists of a main box, a drip system, a temperature control system, an independent filter, and an auxiliary fan. The main box is composed of two parts: the balance chamber and the oil fume generation chamber. The equipment is made of all stainless steel, with a beautiful and elegant appearance and a reasonable internal layout. The main measurement and control instruments and valves are imported products. The PLC+touch screen human-machine interaction interface is easy to operate, with full touch control. It can automatically set the test conditions, and the test process is automatically controlled by the program controller. The internal program of the PLC can automatically calculate the test results based on the test data.

2、 Main technical performance indicators of the oil separation test device for range hood:
1. Purpose: Mainly used for testing the oil separation degree of range hoods.
2. Design basis: GB_17713-2011 "Range hood";
3. Testing principle: GB_17713-2011 Appendix E related requirements;
4. Test model and specifications: Model: Top outlet range hood;
5. Range hood specifications (mm): within 1400 (L) × 800 (W) × 700 (H); 5. Experimental oil: Corn oil with a viscosity of 70mm2/s ± 10 mm2/s at 20 ℃.
6. Prototype power supply: single-phase AC 50-300V, 50Hz, capacity 1kW.
7. Testing station: single station.
8. Temperature control accuracy: The temperature at a distance of 40mm from the bottom edge of the pot is always maintained at 290 ℃± 10 ℃.
9. Dropping speed: All liquids should be dripped uniformly within 30 minutes ± 15 seconds.
10. Measurement parameter: Oil separation degree of range hood.
11. Control parameters: The automatic testing status of each workflow meets the standard requirements.
12. Power capacity: single-phase 220V+N+G, 3KVA/50Hz.
13. Air source: Compressed air 0.4-0.6Mpa.
14. Dimensions: 2000W × 1000D × 2650H.

3、 Testing principle and layout

This scheme adopts a blowing test mode, which automatically opens the nozzle combination according to the set air volume, and controls the air volume by infinitely adjusting the frequency of the auxiliary fan through a frequency converter; The middle of the wind chamber is composed of a uniform flow orifice plate, a nozzle, a starting actuator, and a nozzle plate. This system automatically calculates the fan airflow by measuring the pressure difference before and after the nozzle. When this equipment is running, the performance test device for the fresh air fan is turned on. The air volume of the auxiliary fan is controlled by controlling the opening and closing combination of the air chamber nozzle and the current frequency of the variable frequency device. The static pressure at the corresponding air volume is measured by a high-precision micro pressure gauge to obtain the corresponding data of the air volume and air pressure of the tested fan.