US 2026/0048356 A1 · TWO-STAGE AIR CLEANER SYSTEM WITH SIDE-POSITIONED PRE-CLEANER AND PRE-CLEANER

Abstract

A two-stage air cleaner simple in structure, low in costs, compact and reliable, with automatic dust discharge function. The two-stage air cleaner system can include a main air cleaner and a pre-cleaner positioned at a side of a primary filter cartridge of the main air cleaner. The primary filter cartridge has a dirty side facing downwards and an opposite clean side. The pre-filtered air enters the primary filter cartridge from the dirty side for filtration, and the filtered clean air exits the clean side through an air outlet downstream of the primary filter cartridge. In use, dusts and impurities adsorbed in open channels inside the primary filter cartridge fall into a dust removal arrangement beneath the primary filter cartridge under mechanical vibration and gravity, to automatically discharge from the primary air cleaner, so as to prolong the service life of the primary filter cartridge.

Claims23

Dependent claims

A two-stage air cleaner system with a side-positioned pre-cleaner, comprising:

a main air cleaner and a pre-cleaner arranged at a side of a primary filter cartridge of the main air cleaner, the pre-cleaner having an inlet and an outlet, the outlet facing in a first direction;
wherein the primary filter cartridge includes a dirty side, facing in a second direction orthogonal to the first direction, and an opposite clean side;
wherein air to be filtered, upon being pre-filtered by the pre-cleaner, enters the primary filter cartridge from the dirty side for filtration, and filtered clean air exits from the clean side through an air outlet downstream of the primary filter cartridge;
wherein, when the two-stage air cleaner system is in use, some of the dust and impurities collected in upstream channels inside the primary filter cartridge can fall into a dust removal arrangement arranged beneath the primary filter cartridge under gravity, to automatically discharge from the main air cleaner.

1 more element

A pre-cleaner, comprising:

a pre-cleaner housing for providing air intake passage;
an upper baffle member, a cyclone tube member set, and a lower baffle member contained in the pre-cleaner housing;
and
a dust cover connected to the pre-cleaner housing to form a dust chamber within the pre-cleaner housing;
wherein, the upper baffle member has a plurality of openings;
wherein, the cyclone tube member set includes a base plate and a plurality of cyclone tube members secured to the base plate, each cyclone tube member composed of an outer straight tube, a vane in the outer straight tube, and a central tube inserted into the outer straight tube, the outer straight tube, vane, and central tube being integrally formed as a single component;
wherein, the number and position of the cyclone tube members match with the number and position of the openings of the upper baffle member, and an end of the central tube of each cyclone tube member extends into a corresponding opening of the upper baffle member;
and
wherein, the lower baffle member has a plurality of tapered tubes, the number of which corresponds to the number of the cyclone tube members, and an end of the outer straight tube of each cyclone tube member aligns with an end of a corresponding tapered tube.

6 more elements

Dependencies are inferred from the claim text.

Two-stage air cleaner system with side-positioned pre-cleaner and pre-cleaner

Life of this patent

Two-stage air cleaner system with side-positioned pre-cleaner and pre-cleaner

Life of this patent

Abstract

Claims23