The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 29, 2019
Filed:
Dec. 15, 2014
Coway Co., Ltd, Chungcheongnam-do, KR;
Young-Gun Cho, Seoul, KR;
Ju-Hyun Baek, Seoul, KR;
In-Seok Seo, Seoul, KR;
Seong-Jin Yun, Seoul, KR;
Chul-Soon Dan, Seoul, KR;
Sang-Woo Kang, Seoul, KR;
Jong-Wan Kim, Seoul, KR;
COWAY CO., LTD., Chungcheongnam-do, KR;
Abstract
An air purifier according to the present disclosure includes: a memory for storing a flow rate/pressure differential correlation graph with regard to each filter utilization state; a pressure differential sensor for measuring a pressure differential, which is a difference in pressure between the front and rear ends of the filter; and a filter replacement time management unit for determining the time to replace the filter according to a result of matching a pressure differential of the filter, which is measured by the pressure differential sensor at a preset cycle, and the flow rate of air flowing into the filter during pressure differential measurement with the flow rate/pressure differential correlation graph for each utilization state.