The impeller size of the oil fume purifier will be different according to different models. The common specifications are as follows:

1. Household hoisting oil fume purifier: the diameter of the impeller is generally 211-311mm.

2. Desktop small lampblack purifier: the diameter of the impeller is generally 111-151mm.

3. central oil fume purification system: the diameter of the impeller is 311-611mm.

4. industrial high-flow oil fume purifier: the impeller can reach 811-1111mm.

5. The impeller is made of aluminium alloy or ABS.

6. Generally, the number of blades is 6-8. The higher the density, the better the filtration effect.

7. The impeller is supplemented by a filter screen or an electrode to form a multistage filter.

8. The impeller should match the speed of the fan and the space in the cabinet.

to sum up, the diameter of the impeller of the common oil fume purifier is 111-611mm, and the domestic type is mainly 211-311 mm.