Air purification filter and air purifier including same

Patent metadata

Field	Value
Publication number	US-12409458-B2
Application number	US-202017776713-A
Country	US
Kind code	B2
Filing date	Nov 17, 2020
Priority date	Nov 18, 2019
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

Proposed are an air purification filter ( 1 ) and an air purifier ( 200 ) including the same. The air purification filter includes a filtering layer ( 30 ) configured as a dielectric which collects minute particles, a pair of electrode layers ( 50, 70 ) laminated on opposite sides of the filtering layer ( 30 ), respectively, and configured to receive power so as to generate polarization through an electric field in the filtering layer ( 30 ), and a connection module ( 100, 100 ′). The connection module ( 100, 100 ′) is coupled to at least any one of the opposite ends of the pair of electrode layers ( 50, 70 ) such that the coupled portion of the connection module is insulated from an outside thereof and is electrically connected with an external power supply part.

First claim

The invention claimed is:

1. An air purification filter comprising:
a filtering layer configured as a dielectric;
a pair of electrode layers provided at opposite sides of the filtering layer, respectively, and configured to receive power so as to generate an electric field in the filtering layer; and
a connection module including:
a coupled portion that is coupled to at least one of the pair of electrode layers and is insulated from an outside of the connection module, and
a module terminal that electrically connects the coupled portion of the connection module with a power supply,

wherein the connection module includes a module housing that comprises a first housing having a connection space, and a second housing configured to cover the connection space when coupled to the first housing and at least one of the pair of electrode layers is inserted into the connection space and is electrically connected to the module terminal.

2. The filter of claim 1 ,
wherein at least one of the pair of electrode layers has a connection end that is electrically connected to the power supply, and the connection module is coupled to the at least one of the pair of electrode layers so as to cover the connection end.

3. The filter of claim 1 , wherein
the pair of electrode layers comprises:
a first electrode layer laminated on a first side of the filtering layer and comprising a conductive material to which power of a first polarity is applied, and
a second electrode layer laminated on a second side of the filtering layer opposite to the first side of the filtering layer and comprising a conductive material that is grounded or to which power of a second polarity, opposite to the first polarity applied to the first electrode layer, is applied, and

the module terminal of the connection module is electrically connected to at least one of the first electrode layer or the second electrode layer.

4. The filter of claim 1 ,
wherein the connection module is made of an insulating material, the module terminal being installed in the connection space of the module housing and a terminal head of the module terminal protruding toward an outer side of the connection space and being electrically connected to the power supply.

5. The filter of claim 4 ,
wherein conductive paste is provided between the module terminal seated in the connection space of the module housing and a connection end of at least one of the pair of electrode layers such that the module terminal and the at least one of the pair of electrode layers are electrically connected to each other.

6. The filter of claim 1 ,
wherein a first connection end of a conductor of a first electrode layer of the pair of electrode layers is seated in the connection space and is electrically connected to the module terminal, and a second connection end of a conductor of a second electrode layer of the pair of electrode layers is located away from the connection space.

7. The filter of claim 6 ,
wherein a terminal hole is formed through the module housing, and a terminal head connected to the module terminal protrudes through the terminal hole to extend outside of the module housing.

8. The filter of claim 1 ,
wherein lengths of the pair of electrode layers are different from each other such that an insulation step is provided between the pair of electrode layers, a connection end of a first conductor of a longer electrode layer of the pair of electrode layers is seated in the connection space of the module housing and is connected to the module terminal, and a connection end of a second conductor of a shorter electrode layer of the pair of electrode layers is located outside the connection space and is covered by the module housing, and
wherein the module terminal is seated on a surface of the connection space defined in the module housing, and the connection end of the first conductor of the longer electrode layer is provided on a surface of the module terminal.

9. The filter of claim 1 ,
wherein the module terminal is seated in the connection space, the second housing has a press block that protrudes from the second housing in a direction toward the connection space, and the first housing and the second housing are coupled with each other such that the module terminal and a connection end of the at least one of the pair of electrode layers extending in the connection space are pressed by the press block.

10. The filter of claim 1 ,
wherein the connection module comprises a first connection module and a second connection module coupled respectively to opposite sides of a filter body composed of the filtering layer and the pair of electrode layers,
wherein the first connection module and the second connection module are electrically connected respectively to a first electrode layer and a second electrode layer of the pair of electrode layers,
wherein the first connection module and the second connection module are coupled to the opposite sides of the filter body, a first terminal head protrudes from the first connection module, a second terminal head protrudes from the second connection module, and the first terminal head and the second terminal heads protrude, respectively, in opposite directions and
wherein the filter body is rolled to have a cylindrical shape, and the first connection module and the second connection module are coupled to each other.

11. The filter of claim 1 ,
wherein at least one of the pair of electrode layers comprises multiple strands of insulated wires without support lines formed of an insulating material or the multiple strands of insulated wires and multiple strands of the support lines that are woven together.

12. The filter of claim 11 ,
wherein the connection module is coupled to connection ends of the multiple strands of insulated wires, and the module terminal installed in the connection module is electrically coupled to the connection ends.

13. An air purifier comprising:
a purifier housing having a filter installation space defined therein;
a power supply installed on the purifier housing; and
a filter configured to receive power from the power supply when installed in the filter installation space,
wherein the filter comprises:
a filtering layer configured as a dielectric;
a pair of electrode layers provided on opposite sides of the filtering layer, respectively, and configured to receive power from the power supply so as to generate an electric field in the filtering layer; and
a connection module including a region that is coupled to at least one of the pair of electrode layers and is insulated from an outside of the connection module, the connection module having a module terminal installed therein that electrically connects the portion of the connection module coupled to the at least one of the pair of electrode layers with the power supply, and

wherein the connection module includes a module housing that comprises a first housing having a connection space, and a second housing configured to cover the connection space when coupled to the first housing, and at least one of the pair of electrode lavers is inserted into the connection space and is electrically connected to the module terminal.

14. The air purifier of claim 13 ,
wherein the connection module comprises a first connection module and a second connection module coupled respectively to opposite sides of a filter body composed of the filtering layer and the pair of electrode layers, and
wherein the first connection module and the second connection module are electrically connected respectively to a first electrode layer and a second electrode layer included in the pair of el

Assignees

• Lg Electronics Inc

Inventors

• Lee Jung Ryun
• Baeck Seung Jae
• Hyun Ok Chun
• Park Chul Woo

Classifications

• B03C3/70

  insulating in electric separators (B03C3/53 takes precedence) · CPC title

• B01D2239/0471

  Surface coating material · CPC title

• B01D2239/0435

  Electret · CPC title

• B01D2239/12

  Special parameters characterising the filtering material · CPC title

• B01D46/0013

  Modules · CPC title