TUBULAR AIR CLEANER

• US 20180119653A1
• Filed: 10/23/2017
• Published: 05/03/2018
• Est. Priority Date: 10/28/2016
• Status: Abandoned Application

• Current Assignee: Toyota Boshoku Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Boshoku Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: ISHIZUKA, Satoshi, MARUYAMA, Kazushige
• Application Number:
  US15/790,694
• Publication Number:
  US 20180119653A1
• Time in Patent Office: Days
• CPC Class Codes: B01D 46/0036 by adsorption or absorption
• CPC Class Codes: B01D 46/0045 by using vanes
• CPC Class Codes: B01D 46/0046 provoking a tangential stream B01D46/0045 takes precedence
• CPC Class Codes: B01D 46/2411 Filter cartridges
• CPC Class Codes: B01D 46/521 using folded, pleated material
• CPC Class Codes: B01D 50/20 Combinations of devices covered by groups B01D45/00 and B01D46/00
• CPC Class Codes: F02M 35/0216 arranged in series, e.g. pre- and main filter in series
• CPC Class Codes: F02M 35/0223 by centrifugal forces, e.g. cyclones
• CPC Class Codes: F02M 35/02416 Fixing, mounting, supporting or arranging filter elements; Filter element cartridges
• CPC Class Codes: F02M 35/02483 Cylindrical, conical, oval, spherical or the like filter elements; wounded filter elements

Abstract

A tubular air cleaner includes a housing, which has a peripheral wall and a bottom wall, an inlet, which is formed in the peripheral wall, an outlet, which is formed in the bottom wall, a filter element, and a partition wall portion. The filter element has a filtration portion and is accommodated in the housing. The partition wall portion forms the inlet together with the peripheral wall. The filter element is arranged eccentrically with respect to the axis of the housing. An air flow path is formed between the filtration portion and the inner peripheral surfaces of the peripheral wall and the partition wall portion. The air flow path has a gradual change portion, in which the distance between the inner peripheral surface of the peripheral wall and the outer peripheral surface of the filtration portion gradually decreases toward the downstream end.

Claims

1. A tubular air cleaner comprising:

a cylindrical housing, which has a peripheral wall and a bottom wall;

an inlet, which is formed in the peripheral wall;

an outlet, which is formed in the bottom wall;

a filter element, which has a cylindrical filtration portion and is accommodated in the housing; and

a partition wall portion, which is provided in the housing and constitutes the inlet together with the peripheral wall, wherein

the filter element is arranged eccentrically with respect to an axis of the housing,

an air flow path is formed over an entire circumference between the filtration portion and inner peripheral surfaces of the peripheral wall and the partition wall portion, and

the air flow path has a gradual change portion, in which a distance between the inner peripheral surface of the peripheral wall and an outer peripheral surface of the filtration portion gradually decreases toward a downstream end.

2. The tubular air cleaner according to claim 1, wherein

the housing includes a case and a cap,

the peripheral wall includes a first part in a circumferential direction and a second part in the circumferential direction that is different from the first part,

the case has a case peripheral wall portion, which constitutes the first part of the peripheral wall,

the cap includes a cap body and an inlet forming member,

the cap body has a cap peripheral wall portion, which constitutes the second part of the peripheral wall, and a cap bottom wall portion, which forms the bottom wall, and

the inlet forming member has the partition wall portion and is fixed to the cap body to form the inlet.