Carbon fiber charging device and electrical appliance having the same

Patent metadata

Field	Value
Publication number	US-11413626-B2
Application number	US-201916707553-A
Country	US
Kind code	B2
Filing date	Dec 9, 2019
Priority date	Dec 14, 2018
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A carbon fiber charging device and an electrical appliance therefor are provided. The carbon fiber charging device includes a carbon fiber electrode configured to generate electrons and charge surrounding dust, a protective case configured to cover the carbon fiber electrode such that a foreign object having a size of a human finger is not able to contact the carbon fiber electrode, the protective case including a top wall facing a tip of the carbon fiber electrode and provided with a through hole and a side wall surrounding an outer circumferential surface of the carbon fiber electrode, and an electron generation stabilization device provided in the protective case and configured to allow the carbon fiber electrode to generate electrons stably.

First claim

What is claimed is:

1. A carbon fiber charging device comprising:
a carbon fiber electrode configured to generate electrons and charge surrounding dust;
a protective case configured to cover the carbon fiber electrode, the protective case including a top wall facing a tip of the carbon fiber electrode and provided with a through hole and a side wall surrounding an outer circumferential surface of the carbon fiber electrode; and
an electron generation stabilization apparatus provided in the protective case and configured to adjust a potential gradient around the carbon fiber electrode and allow the carbon fiber electrode to generate the electrons stably,
wherein the electron generation stabilization apparatus includes an inclined surface provided in an inner side surface of the through hole and inclined to diverge toward an outside of the protective case.

2. The carbon fiber charging device as claimed in claim 1 ,
wherein the through hole of the protective case is formed in a circular cross-section, and
wherein a diameter of the through hole is 6 mm or less.

3. The carbon fiber charging device as claimed in claim 1 ,
wherein the through hole of the protective case is formed in a polygonal cross-section, and
wherein a diameter of an inscribed circle of the through hole is 6 mm or less.

4. The carbon fiber charging device as claimed in claim 1 ,
wherein a distance between an outer surface of the top wall of the protective case and the tip of the carbon fiber electrode is at least 2 mm.

5. The carbon fiber charging device as claimed in claim 1 , wherein an inclination angle of the inclined surface of the through hole is in a range of 10 degrees to 15 degrees.

6. The carbon fiber charging device as claimed in claim 1 , wherein the electron generation stabilization apparatus includes a ground electrode disposed in a vicinity of the carbon fiber electrode.

7. The carbon fiber charging device as claimed in claim 6 , wherein the ground electrode is disposed in a ring area around the carbon fiber electrode having a radius of 4 times to 8 times a voltage applied to the carbon fiber electrode.

8. The carbon fiber charging device as claimed in claim 1 , wherein the electron generation stabilization apparatus includes a charge prevention coating layer formed on the top wall of the protective case.

9. The carbon fiber charging device as claimed in claim 8 , wherein a surface resistance of the charge prevention coating layer on the top wall of the protective case is in a range of 10 5 to 10 11 Ω/sq.

10. The carbon fiber charging device as claimed in claim 1 , wherein the electron generation stabilization apparatus includes a ventilation path formed in the protective case in communication with the through hole of the top wall so that outside air flows through the ventilation path.

11. The carbon fiber charging device as claimed in claim 10 , wherein the ventilation path includes an opening formed in a support member, on which the carbon fiber electrode is disposed, fixed to a lower end of the protective case and a side opening provided on the side wall of the protective case.

12. The carbon fiber charging device as claimed in claim 10 , further comprising:
a fixing ring provided between the carbon fiber electrode and the protective case, the fixing ring configured to fix the carbon fiber electrode to the side wall of the protective case,
wherein the ventilation path is formed as a plurality of slots formed in a longitudinal direction of the protective case in the fixing ring.

13. The carbon fiber charging device as claimed in claim 1 , wherein the electron generation stabilization apparatus includes an air supply apparatus configured to forcibly supply air to the carbon fiber electrode through a ventilation path.

14. The carbon fiber charging device as claimed in claim 1 , wherein the electron generation stabilization apparatus comprises:
a high voltage applying part configured to apply a high voltage to the carbon fiber electrode; and
at least one processor configured to control the high voltage applying part to block the high voltage applied to the carbon fiber electrode at a predetermined time interval after the high voltage applying part applies the high voltage to the carbon fiber electrode.

15. The carbon fiber charging device as claimed in claim 1 ,
wherein the electron generation stabilization apparatus comprises:
a switching portion electrically connected to the carbon fiber electrode,
a high voltage applying part electrically connected to the switching portion and configured to apply a high voltage to the carbon fiber electrode,
a ground electrically connected to the switching portion, and
at least one processor connected to the switching portion and configured to control the switching portion so that the carbon fiber electrode is selectively connected to one of the high voltage applying part and the ground, and

wherein the at least one processor is configured to control the switching portion so that the carbon fiber electrode is connected to the high voltage applying part, and then a connection between the carbon fiber electrode and the high voltage applying part is blocked and the carbon fiber electrode is connected to the ground at a predetermined time interval.

16. An electrical appliance, comprising:
a main body including an inlet;
a carbon fiber charging device disposed on an edge of the inlet and configured to charge contaminants contained in air flowing into the inlet;
an air moving device provided inside the main body and configured to vacuum the air containing contaminants through the inlet and discharge the air to an outside of the main body; and
a dust collecting device disposed in an air passage through which air vacuumed by the air moving device provided inside the main body passes, and configured to collect contaminants charged by the carbon fiber charging device from the air,
wherein the carbon fiber charging device comprises:
a carbon fiber electrode configured to generate electrons and charge contaminants,
a protective case including a top wall facing a tip of the carbon fiber electrode and provided with a through hole and a side wall surrounding an outer circumferential surface of the carbon fiber electrode, the protective case being fixed to the main body, and
an electron generation stabilization apparatus provided in the protective case and configured to adjust a potential gradient around the carbon fiber electrode and allow the carbon fiber electrode to generate the electrons stably, and

wherein the electron generation stabilization apparatus includes an inclined surface provided in an inner side surface of the through hole and inclined to diverge toward an outside of the protective case.

17. The electrical appliance as claimed in claim 16 , wherein the carbon fiber charging device includes a plurality of carbon fiber charging devices disposed at a predetermined interval on the edge of the inlet.

18. The electrical appliance as claimed in claim 16 , wherein the electron generation stabilization apparatus comprises:
an inclined surface provided on an inner side surface of the through hole of the protective case and inclined to diverge outward; and
a ventilation path formed in a lower portion of the protective case to communicate with the through hole of the top wall, wherein outside air flows through the ventilation path.

19. The electrical appliance as claimed in claim 16 , wherein the electrical appliance comprises at least one of an air conditioner, an air cleaner, a dehumidif

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kochiyama Yasuhiko
• Shin Kyuho
• Yun Soyoung

Classifications

• B03C3/41 Primary

  Ionising-electrodes · CPC title

• B03C3/47

  flat, e.g. plates, discs, gratings · CPC title

• B03C2201/04

  Ionising electrode being a wire · CPC title

• F24F8/30

  by ionisation · CPC title

• B03C3/08

  characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream · CPC title