A commercial range hood with rotary separation and static blade cascade

Abstract

The invention discloses a commercial range hood with rotating and separated stationary blade cascades, which mainly includes a smoke exhaust cover, a smoke guide plate, a windshield ring, a rotating impeller, a stationary blade cascade, a motor, and an oil discharge pipe. The bottom of the exhaust hood is open, and a partition is fixed inside to divide it into upper and lower parts. There are two smoke inlets on the left and right sides of the partition, and a windshield ring fixedly connected to the partition is provided at the smoke inlet. , install the smoke deflector below the smoke inlet. Four motors are fixed on the inner top wall of the exhaust hood, and the motors are fixedly connected with the hub through the motor shaft, and the hub is fixedly connected with the single arc-shaped blade of the rotating impeller. The outer interval of the rotating impeller is covered with static vane cascades. An oil collecting tank and an oil discharge pipe are installed on the side of the exhaust hood near the wall, and a smoke exhaust port is opened in the middle of the top to connect to the inlet of the exhaust pipe. Compared with the prior art, the commercial range hood of the present invention has a rotary-separation stationary blade cascade type, and the grease separation section is placed in front to prevent a large amount of oil particles from entering the exhaust pipe, and the purification efficiency is high.

Description

technical field [0001] The invention relates to the field of commercial kitchen fume emission and centrifugal separation and purification, in particular to a rotary separation static blade cascade type commercial fume machine. Background technique [0002] Cooking fumes contain aldehydes, ketones, hydrocarbons, fatty acids, aromatic compounds and heterocyclic compounds. During the cooking process, they show different forms with temperature changes, that is, a mixture of aerosols, water vapor and fine particles. The liquid-solid particles are inhalable aerosols between 0.010 and 10 μm, which can be suspended in the air for a long time. Emissions to the atmosphere can be converted into secondary aerosols, producing toxic and harmful particulate matter, threatening human health. Existing commercial kitchen fume capture and purification systems emphasize end-of-line treatment, that is, after collecting in the fume exhaust hood above the cooktop, it enters the fume purification ...

AI Technical Summary

Problems solved by technology

With the prolongation of the operation time, oil dirt adheres to the surface of the purification equipment and is not cleaned in time, resulting in a decline in the performance of the oil fume purification equipment

Grease adheres to the inner cavity of the hood and fan, which increases the difficulty of cleaning and reduces the efficiency of the range hood to a certain extent, increasing the escape probability of cooking fume

[0003] In addition, most range hoods use the filter screen or adsorption material on the filter to separate and purify the oil. This method usually causes the filter screen to be stained with dirt and the filter material to be blocked, resulting in difficulty in cleaning, replacement of the filter element, and increased equipment energy consumption and operating costs.

Moreover, the particle size range of grease particles that can be separated by the filter screen is limited, the purification efficiency is low, and the oil particles are discharged into the atmosphere, causing environmental pollution

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