It is a legal requirement to install an oil fume purifier, and at the same time, it is also to protect the environment. The specific standards are as follows:

4.1 The minimum removal efficiency limit of oil fume purification facilities in catering enterprises is divided into three levels according to the scale; The scale of catering units is divided according to the number of reference stoves, and the number of reference stoves is converted according to the total heating power of stoves or the total projected area of exhaust hood stoves.

the corresponding heating power of each reference range is 1.67×118J/h, and the corresponding projection area of the exhaust hood range is 1.1m2. See Table 1 for the scale division parameters of catering units.

4.2 the maximum allowable emission concentration of cooking fume per catering unit and the minimum removal efficiency of cooking fume purification facilities shall be implemented as specified in table 2.

Extended information

Case of being fined for not installing an oil fume purifier as required:

Law enforcement officers of Ansha Squadron of Changsha County Administrative Law Enforcement Bureau once again visited Aunt Wang's family kitchen in Maotang Community of Ansha Town to check the installation and rectification of its oil fume purification equipment.

Previously, Aunt Wang's family kitchen was complained by residents because she didn't install fume purification equipment, so the law enforcement officers of Ansha Squadron filed an investigation according to law, and finally made an administrative penalty decision of fined 5,111 yuan.

At present, the fine for Aunt Wang's family kitchen has been paid and implemented in place, and an oil fume purifier has been installed. The second test results show that the oil fume emission does not exceed the standard.

People's Daily Online-A family restaurant in Changsha was fined 5111 yuan for not installing an oil fume purifier

Baidu Encyclopedia-Oil fume emission standard for catering industry