Heavy-duty car dual chamber non filtering net air filter

Abstract

The invention discloses a dual-cavity air filter without a screen for a heavy vehicle, which is characterized in that a duplex inner cavity of a waterproof intake hood is connected with a fan impeller; a pyramidal intake dividing hood is connected in the inner cavity of the waterproof intake hood below the fan impeller at interval; the lower end of the inner cavity of the waterproof intake hood is connected with a dust collection shell; the excircle of an outlet pipe connected with the inner cavity of the dust collection shell is connected with a reverse suction hood by a loop; the reverse suction hood is connected with the dust collection shell to form a dust-collecting cavity; the orientation of an air inlet is arranged on the surface of the periphery of the reverse suction hood, which is opposite to that of an air inlet arranged on the fan impeller; a dust chimney is connected on the dust collection shell and is communicated with the dust-collecting cavity. The air filter completely filters the rain and snow drops and impurities contained in the air to be filtered and effectively prolongs the service life of paper filter elements. By forcibly compressing the air to be filtered into the outlet pipe by high speed rotation of the duplex fan impeller, the outlet flow is improved and smoothened and the resistance keeping the filtered air from entering the engine is obviously reduced.

Description

(1) Technical field: [0001] The invention relates to an automobile air filter, in particular to a double-cavity air filter without a filter screen for a heavy-duty automobile. (two) background technology: [0002] The heavy-duty vehicle air filter in the prior art has a structure that a filter oil is placed at the bottom of the filter housing cavity, and a steel wire filter screen and a paper filter element are arranged successively at intervals above it. When working, the air to be filtered is usually firstly filtered by the oil filter and the steel wire filter, and then finely filtered by the paper filter element before entering the engine to work. When a heavy-duty vehicle is working in a harsh outdoor environment, in case of rain or snow, although the rain and snow droplets entering the inner cavity of the filter have been coarsely filtered, the remaining rain and snow droplets still have to be finely filtered through the paper filter element. At this time, it is very e...

AI Technical Summary

Problems solved by technology

When a heavy-duty vehicle is working in a harsh field environment, in case of rain or snow, although the rain and snow droplets entering the inner cavity of the filter have been coarsely filtered, the remaining rain and snow droplets still have to be finely filtered through the paper filter element. At this time, it is very easy to soak and damage the filter paper, causing the paper filter element to be unusable and scrapped, which seriously reduces its service life and increases production costs.

After the multi-stage filtration of the above-mentioned filtration structure, the intake flow rate of the filtered air is small and the resistance is large, which obviously results in an increase in engine fuel consumption and a decrease in output power

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