Whirl entraining type cooking fume exhauster

Abstract

A swirl drawing oil exhaust ventilator features in the stacked arrangement of two wind machine and ring swirl slot, two wind blower pipe tangentially cutting the ring swirl slot with an included angle of 60-180, outside barrel connected to the radius change connecting pipe, slot at their juncture and outside slanted slot, a ring oil stop slot, radius change minimum diameter being 0.9 to 1.3 times of the up opening diameter of the connecting pipe, length being 1 to 2 times of the minimum diameter, radius connecting pipe installed with dual sealing rolling door at the joint position of the smoke exhaust chimney. It adopts reasonable assembly method, linear structure and ball smoke hood, free from big power wind blower to achieve better bump effect, getting rid of may setbacks of existing electric smoke extraction machine with high efficiency, energy saving, environment protective and easy cleaning.

Description

Technical field: [0001] The invention belongs to the technical field of pneumatic dust removal devices, and in particular relates to an electric range hood for removing oil fume gas, in particular to a swirl roll-type range hood. Background technique: [0002] Electric range hoods have been in the ranks of household appliances for half a century, and they are indispensable fume purifiers in the kitchen environment. However, the existing electric range hoods on the market almost all set the fan in the pipeline at the junction of the smoke collection hood and the smoke exhaust pipe, and use the rotation of the fan impeller to generate negative pressure to suck the oil fume. The blades of the fan directly contact the fume gas. contact, causing the blades of the fan to stick to oil, destroying the balance of the blades, making it difficult to clean, reducing the performance of the fan, increasing the noise, and shortening the life of the range hood; and because the exhaust pipe ...

AI Technical Summary

Problems solved by technology

However, the existing electric range hoods on the market almost all set the fan in the pipeline at the junction of the smoke collection hood and the smoke exhaust pipe, and use the rotation of the fan impeller to generate negative pressure to suck the oil fume. The blades of the fan directly contact the fume gas. contact, causing the blades of the fan to stick to oil, destroying the balance of the blades, making it difficult to clean, reducing the performance of the fan, increasing the noise, and shortening the life of the range hood; and because the exhaust pipe is blocked by the fan, the airflow is not smooth, The efficiency of sucking and exhausting oil fume is very low; manufacturers often increase the input power of the fan to make up for it, which not only increases the energy consumption, but also increases the noise of the fan, making some electric range hoods unable to meet the "GB / T17713-1999 Oil Suction Smoke machine" national standard and the requirements of "Residential Design Code GB50096-1999"

If the original structural state does not change, the defects of the existing electric range hoods, such as low efficiency of sucking and exhausting oil fume, high energy consumption, high noise, high pollution, difficult cleaning and short service life, cannot be changed.

[0003] The "swirl type range hood" proposed in Chinese Patent No. 01201987.9, although the configured fan is removed from the smoke exhaust pipe, and the swirling airflow is used to form negative pressure to entrain the oil fume, but the swirl device and the swirl tube of the swirl generating device 1. The air intake cylinder is set together with a cylinder, and the upper port of the air intake cylinder passes through the cyclone and is placed in the cyclone and the cyclone cylinder, so that the low pressure area generated by the swirl cannot be effectively controlled, and the It can't achieve better suction effect; the gradually expanding exhaust air duct it adopts is not suitable for installation and use in the kitchen environment

The deep hood type has a better effect of collecting oily fume, but it is easy to block the sight and meet the head, and has poor practicability. Although the shallow hood type and the European ultra-thin type do not block the line of sight and meet the head, the effect of gathering oily fume is poor. Manufacturers sometimes change the fume collecting hood For example, the range hood model CXW-219-D69 adopts an arched fume collection hood based on the European style, and the range hood suction port of model CXW-169-JX01 / J2M / 19M is installed near the low position of the cooktop and installed on the upper end of the panel. A movable baffle acts as a smoke collection hood to avoid blocking the sight line and not touching each other. However, because these smoke collection hoods cannot take into account both practicality and the effect of gathering oil fume, the overall effect is not very ideal

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