The ground is flat; There should be enough access space on the side of the access door and other objects, and the access space should be ≥1m; The temperature of flue gas introduced into oil fume purification equipment must be controlled below 70 degrees; The strength of the ground or floor is enough to support the weight of the oil fume purification equipment; Maintenance space should be reserved around the purifier, and the cupboard door should have a free opening space of more than 90 degrees to facilitate future cleaning, maintenance and repair. In the general kitchen, cooking oil fume is the most widely used oil fume purifier, and other steaming types do not need oil fume purifiers, because oil fume purifiers are also expensive. The fume purifier can be installed indoors or outdoors, but pay attention to installing rain-proof tools to ensure the service life of the machine.