公开(公告)号：US11433333B2

公开(公告)日：2022-09-06

申请号：US17040782

申请日：2019-03-27

申请人： YUPO CORPORATION

发明人： Yutaro Sugamata ,  Hiroshi Koike ,  Seiichiro Iida

IPC分类号： B01D39/16 ,  B01D46/00 ,  B01D46/52 ,  B03C3/28 ,  B03C3/47 ,  B32B3/28 ,  B32B5/18 ,  B32B27/06 ,  B32B27/20 ,  B32B27/32

摘要： The electret-treated sheet includes: a core layer (A) which is a porous film containing at least a thermoplastic resin; a surface layer (X) disposed on one side of the core layer (A); and a back surface layer (Y) disposed on the other side of the core layer (A), the surface layer (X) and the back surface layer (Y) each having a charged outermost surface, wherein the electret-treated sheet has a water vapor permeability coefficient of 0.1 to 2.5 g·mm/m2·24 hr; the core layer (A) has a pore aspect ratio of 5 to 50 and an average pore height of 2.5 to 15 μm; the surface layer (X) and the back surface layer (Y) each have a thickness of 5 to 200 μm; and the surface layer (X) includes a heat seal layer (B) including the outermost surface, wherein the heat seal layer (B) has a melting point of 50 to 140° C.

公开(公告)号：US20210394198A1

公开(公告)日：2021-12-23

申请号：US17287725

申请日：2019-10-21

申请人： SHANGHAI BIXIUFU ENTERPRISE MANAGEMENT CO., LTD.

发明人： Wanfu TANG ,  Zhijun DUAN ,  Yongan ZOU ,  Yong XI

IPC分类号： B03C3/06 ,  B03C3/28 ,  B03C3/41 ,  B03C3/15 ,  B03C3/49

摘要： An air dust removing method, comprising the follow steps: providing an electret element (205) in a position without dust in an electric field when an ionization dust removing electric field has a power-on driving voltage; when the ionization dust removing electric field has no power-on driving voltage, using the electret element (205) to absorb particulate matters in the air.

公开(公告)号：US11169055B2

公开(公告)日：2021-11-09

申请号：US15762851

申请日：2016-09-23

申请人： Rutgers, The State University of New Jersey

发明人： Jennifer Therkorn ,  Gediminas Mainelis ,  Jerry I. Scheinbeim

IPC分类号： G01N1/22 ,  B03C3/017 ,  B03C3/28 ,  F23J15/02 ,  B03C3/32 ,  G01N1/26 ,  G01N1/40

摘要： A passive and active sampler for airborne particulate sampling (especially particles of biological origin) and a method of using same are disclosed. The sampler includes a sampler base portion of variable size and shape having a longitudinal body and an inner surface. The sampler base portion is configured with a plurality of air channels having variable air channel spacing therethrough the longitudinal body. A plurality of layers of ferroelectric film have a first side and a second side polarized by application of an external electric field such that the first side produces a negative electric field at a first surface and the second side produces a positive electric field at a second surface. The plurality of layers of polarized, ferroelectric film are disposed thereon the longitudinal body with their opposite polarization directions facing each other across a fixed air gap to collect both charged and uncharged particles. The use of such technology as an electrostatic precipitator for active sampling of airborne particulates and a method of using same are further disclosed. This electrostatic precipitator technology can be used for bioaerosol or general particle filtration, as in HVAC systems.

公开(公告)号：US10400372B2

公开(公告)日：2019-09-03

申请号：US15522506

申请日：2015-10-26

申请人： KURARAY CO., LTD.

发明人： Yasuhiro Shirotani ,  Ikuhisa Shiraishi

IPC分类号： D04H3/009 ,  D04H1/4326 ,  D04H3/16 ,  B01D39/08 ,  B03C3/28 ,  B01D39/16

摘要： Use of an electrically charged nonwoven fabric that is made of a fiber predominantly composed of an amorphous polymer provides a novel filtration material having improved performance compared to that of conventional filtration materials, and having excellent heat resistance and excellent flame retardancy as well as an electrically charged nonwoven fabric for use in the filtration material. It is preferable that the surface charge density is greater than or equal to 1×10−10 coulomb/cm2. It is preferable that the collection efficiency for collecting a dust particle with a particle diameter of 1 μm flowing at a fabric-passing velocity of 8.6 cm/second is greater than or equal to 40%, the QF value is greater than or equal to 0.05, and the decrement of the dust-particle collection efficiency after being allowed to leave at 100° C. for 24 hours is less than or equal to 10%.

公开(公告)号：US10213716B2

公开(公告)日：2019-02-26

申请号：US15301902

申请日：2015-03-31

申请人： TOYOBO CO., LTD.

发明人： Yoshiyuki Kitagawa ,  Toshikatsu Enjoji

IPC分类号： B01D39/16 ,  B03C3/28 ,  H01G7/02 ,  B01D46/00 ,  D06M15/256 ,  D06M101/20 ,  D06M101/18

摘要： [Problems]An object of the present invention is to provide an electret with an initial increased electrostatic charge quantity and suppressed attenuation of electrostatic charge to liquid particles.[Means for solving]The electret is obtained by depositing polytetrafluoroethylene having a melting point of 35° C. or higher and 320° C. or lower on a carrier and imparting an electrostatic charge to at least one of the carrier and the polytetrafluoroethylene.

公开(公告)号：US20180310761A1

公开(公告)日：2018-11-01

申请号：US15766550

申请日：2016-09-29

申请人： Morello Forni di Morello Marco & C. S.A.S.

发明人： Mairo MORELLO

IPC分类号： A47J37/04 ,  F24C15/20 ,  F24C15/14 ,  F24C14/00 ,  A47J37/07 ,  B01D53/04 ,  B01D46/00 ,  B03C3/28 ,  B03C3/41 ,  B03C3/45

CPC分类号： F24C15/2042 ,  A21B1/44 ,  A47J37/043 ,  A47J37/0754 ,  A47J37/0786 ,  F24C14/005 ,  F24C15/14 ,  F24C15/2028

摘要： A grilling machine is described, which comprises a base body, a plate, arranged on the base body and defining a cooking surface whereon foods to be cooked are laid, and heating means operationally associated with the plate for heating the cooking surface. There is also a circuit, associated with the plate, for treating the fumes produced during the food cooking process. The fumes treatment circuit comprises: a hood arranged above the plate, which comprises at least one suction mouth, a filtering unit fluidically connected to the hood, and at least one recirculation outlet fluidically connected downstream of the filtering unit and located near the plate. In this manner, the cooking fumes sucked in through the suction mouth of the hood are treated by the filtering unit in order to obtain a purified flow with a given percentage of humidity. The purified flow is then recirculated towards the cooking surface through the recirculation outlet in order to exert a humidifying action on the foods.

公开(公告)号：US20180193678A1

公开(公告)日：2018-07-12

申请号：US15915319

申请日：2018-03-08

申请人： ADC Tech International Ltd.

发明人： William S.H. Cheung

IPC分类号： A62B23/02 ,  B03C3/30 ,  B03C3/36 ,  B03C3/32 ,  B03C3/38 ,  B03C3/28 ,  A62B18/08

CPC分类号： A62B23/025 ,  A62B18/084 ,  B03C3/28 ,  B03C3/30 ,  B03C3/32 ,  B03C3/363 ,  B03C3/383

摘要： An air purifier having an electret module for capturing airborne particles, the electret module includes an electret element which generates a static field for capturing airborne particles. The electret module is positioned incorporated into the air purifier such that the static field helps prevent the inhalation of the airborne particles.

公开(公告)号：US10010822B2

公开(公告)日：2018-07-03

申请号：US14420829

申请日：2013-08-10

申请人： DONALDSON COMPANY, INC.

发明人： Stanley B. Miller, III ,  Allen N. Nicklay ,  Christopher J. Fischer ,  Daniel L. Tuma

IPC分类号： B01D53/02 ,  B01D46/00 ,  B01D46/24 ,  B01D53/04 ,  B03C3/30 ,  G11B33/14 ,  B03C3/28

CPC分类号： B01D46/0002 ,  B01D46/0032 ,  B01D46/2403 ,  B01D53/0407 ,  B01D2279/45 ,  B03C3/28 ,  B03C3/30 ,  G11B33/146

摘要： A filter assembly for use in an electronic enclosure is provided. The filter assembly includes a highly permeable scrim that defines an elongate enclosure with an inlet at a first end and a closed second end, wherein an electrostatic filtration media is disposed within the elongate enclosure.

公开(公告)号：US09913998B2

公开(公告)日：2018-03-13

申请号：US14004284

申请日：2012-03-09

申请人： William S. H. Cheung

发明人： William S. H. Cheung

IPC分类号： A62B23/02 ,  A62B18/08 ,  B03C3/28 ,  B03C3/30 ,  B03C3/32 ,  B03C3/36 ,  B03C3/38

CPC分类号： A62B23/025 ,  A62B18/084 ,  B03C3/28 ,  B03C3/30 ,  B03C3/32 ,  B03C3/363 ,  B03C3/383

摘要： An air purifier having an electret module for capturing airborne particles, the electret module including an electret element disposed within a housing and an adhesive layer coupled to the housing to capture airborne particles, whereby the static field of the electret attracts the airborne particles, which subsequently adhere to the adhesive layer.

公开(公告)号：US20150226441A1

公开(公告)日：2015-08-13

申请号：US14696926

申请日：2015-04-27

申请人： Delstar Technologies, Inc.

发明人： Rick L. Chapman

IPC分类号： F24F3/16 ,  B03C3/28

CPC分类号： F24F3/166 ,  B01D46/0032 ,  B03C3/28 ,  D01D5/06 ,  D01F1/00 ,  D01F6/06 ,  D01F6/38 ,  D04H3/018 ,  D06M13/00 ,  F24F3/1603

摘要： A filtration material comprising a blend of polypropylene and acrylic fibers of round, flat, dog bone, oval or kidney bean shape in any size from 0.08 to 3.3 Dtex. A preferred blend contains about 50 weight percent polypropylene fibers and about 50 weight percent acrylic fibers. The fibers can be blended ranging from 90:10 to 10:90 polypropylene to acrylic. The shape contains 25 weight percent round, flat, oval, dog bone and kidney bean shapes. The fiber blend contains 25 weight percent of at least one size between 0.08 and 3.3 Dtex. Electret fibers incorporated within these blends have 0.02 to 33 weight percent of a charge control agent. These fibers can be used in producing electret material by corona or triboelectric charging methods.