Air cleaner

• US 4,790,863 A
• Filed: 04/23/1986
• Issued: 12/13/1988
• Est. Priority Date: 12/16/1983
• Status: Expired due to Term

• Current Assignee: Nitta Corporation
• Original Assignee: Nitta Corporation
• Inventors: Otsuka, Kazihiko, Yoshimura, Keiji, Tamaki, Toshitaka, Uragami, Hisato, Nobiraki, Koji, Metoku, Yoshiharu
• Primary Examiner(s): Nozick, Bernard
• Application Number:
  US07/053,470
• Time in Patent Office: 965 Days
• Field of Search: 55/467, 55/276, 55/470-473, 55/484, 55/385 A, 98/40.1, 98/40.5, 98/39.1, 415/121 G, 415/206
• US Class Current: 96/384
• CPC Class Codes: B01D 2273/30 Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan
• CPC Class Codes: B01D 46/10 Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
• CPC Class Codes: B01D 46/4236 Reducing noise or vibration emissions
• CPC Class Codes: B01D 46/521 using folded, pleated material
• CPC Class Codes: B01D 46/58 connected in parallel
• CPC Class Codes: F24F 13/24 Means for preventing or suppressing noise
• CPC Class Codes: F24F 13/28 Arrangement or mounting of filters

Abstract

An air cleaner comprising a thin lightweight fan module having at least one fan, at least one casing containing one fan therein and at least one housing containing one casing therein; a thin lightweight air filter module having an air filter; and an air flow moderator disposed between the fan module and the air filter module.

Claims

1. An air cleaner comprising a thin lightweight fan module including a housing having an inlet and having at least one fan, at least one casing containing the at least one fan therein having an inlet and an outlet and a thin lightweight air filter frame having a high efficiency particulate air filter;

and an air flow moderator plate disposed between three walls of said housing and connected thereto to define a flow path between the fan and plate and the plate and air filter.

2. An air cleaner according to claim 1, wherein two adjacent housings in which the fan casings face each other with respect to their outlets are divided by a common partition for the separation of the air flow from said fan casings into two portions, thereby regulating the direction of each of the separated air flows.

3. An air cleaner according to claim 1, wherein said moderator plate is positioned in a manner to form a clearance, through which air flow from said fan passes from said moderator to said air filter frame, between the end of said moderator and the housing.

4. An air cleaner according to claim 3, wherein said moderator plate has, on its end, a blocking plate with a certain length along said clearance, said blocking plate functioning to prevent air flow from said fan from flowing around said fan casing.

5. An air cleaner according to claim 1, wherein said casing is eccentrically positioned within said housing of the fan module to create a large space in front of the outlet of said fan casing.

6. An air cleaner according to claim 5, wherein said two adjacent housings in which the fan casings face each other with respect to their outlets are divided by a partition in such a manner that the end portion of the outlet of the casing in the housing is connected by said partition to the end portion of the outlet of the other casing, thereby regulating the direction of each of the air flows from said fan casings.