Filter and air-conditioning device

Patent metadata

Field	Value
Publication number	US-11071933-B2
Application number	US-202016884721-A
Country	US
Kind code	B2
Filing date	May 27, 2020
Priority date	Oct 17, 2017
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

An antibacterial mask that includes a filter portion having a first principal surface and a second principal surface opposite the first principal surface, the filter portion including a plurality of first piezoelectric yarns that generate at least a first charge by stretching.

First claim

The invention claimed is:

1. An antibacterial mask comprising:
a filter portion having a first principal surface and a second principal surface opposite the first principal surface, the filter portion including a plurality of first piezoelectric yarns that generate at least a first charge by stretching,
wherein the filter portion has a coarse mesh portion and a fine mesh portion.

2. The antibacterial mask according to claim 1 , wherein the second principal surface is positioned on a user side of the antibacterial mask.

3. The antibacterial mask according to claim 2 , wherein the filter portion includes an outer layer and an inner layer, the outer layer being arranged on a side of the first principal surface, and the inner layer being arranged on a side of the second principal surface.

4. The antibacterial mask according to claim 3 , wherein the plurality of first piezoelectric yarns are arranged in the outer layer.

5. The antibacterial mask according to claim 3 , wherein the plurality of first piezoelectric yarns are arranged in the inner layer.

6. The antibacterial mask according to claim 3 , wherein the plurality of first piezoelectric yarns are arranged in the outer layer, and the antibacterial mask further comprises a plurality of second piezoelectric yarns that generate at least the first charge by stretching arranged in the inner layer.

7. The antibacterial mask according to claim 2 , wherein the filter portion includes an outer layer, an inner layer, and an intermediate layer between the outer layer and the inner layer, the outer layer being arranged on a side of the first principal surface, and the inner layer being arranged on a side of the second principal surface.

8. The antibacterial mask according to claim 7 , wherein the plurality of first piezoelectric yarns are arranged in the outer layer, and the antibacterial mask further comprises:
a plurality of second piezoelectric yarns that generate at least the first charge by stretching arranged in the inner layer; and
a plurality of third piezoelectric yarns that generate at least the first charge by stretching arranged in the intermediate layer.

9. The antibacterial mask according to claim 1 , wherein the filter portion is a knitted fabric containing the first piezoelectric yarns.

10. The antibacterial mask according to claim 1 , wherein the filter portion is a nonwoven fabric including the first piezoelectric yarns.

11. The antibacterial mask according to claim 1 , wherein the filter portion is a woven fabric containing the first piezoelectric yarns.

12. The antibacterial mask according to claim 1 , wherein the filter portion further includes a cloth that does not include piezoelectric yarns.

13. The antibacterial mask according to claim 12 , wherein the first piezoelectric yarns and the cloth are arranged in a patchwork form.

14. The antibacterial mask according to claim 12 , wherein a ratio of the cloth to the plurality of first piezoelectric yarns is 2:8 to 8:2.

15. The antibacterial mask according to claim 1 , wherein the filter portion has a shape that covers only a mouth of a user.

16. The antibacterial mask according to claim 1 , wherein the filter portion is shaped so as to cover a mouth or a nose of a user.

17. The antibacterial mask according to claim 1 , wherein the filter portion is shaped so as to cover a mouth and a nose of a user.

18. The antibacterial mask according to claim 1 , wherein the plurality of first piezoelectric yarns are arranged into a plurality of first piezoelectric fibers, each of the plurality of first piezoelectric fibers containing a set of yarns of the plurality of first piezoelectric yarns.

19. An antibacterial mask comprising:
a filter portion having a first principal surface and a second principal surface opposite the first principal surface, the filter portion including a plurality of first piezoelectric yarns that generate at least a first charge by stretching,
wherein the entire filter portion is formed of the first piezoelectric yarns.

20. The antibacterial mask according to claim 19 , wherein the second principal surface is positioned on a user side of the antibacterial mask.

21. The antibacterial mask according to claim 20 , wherein the filter portion includes an outer layer and an inner layer, the outer layer being arranged on a side of the first principal surface, and the inner layer being arranged on a side of the second principal surface.

22. The antibacterial mask according to claim 20 , wherein the filter portion includes an outer layer, an inner layer, and an intermediate layer between the outer layer and the inner layer, the outer layer being arranged on a side of the first principal surface, and the inner layer being arranged on a side of the second principal surface.

23. The antibacterial mask according to claim 19 , wherein the filter portion is a knitted fabric.

24. The antibacterial mask according to claim 19 , wherein the filter portion is a nonwoven fabric.

25. The antibacterial mask according to claim 19 , wherein the filter portion is a woven fabric.

26. The antibacterial mask according to claim 19 , wherein the antibacterial mask further includes a cloth that does not include piezoelectric yarns.

27. The antibacterial mask according to claim 19 , wherein the filter portion has a shape that covers only a mouth of a user.

28. The antibacterial mask according to claim 19 , wherein the filter portion is shaped so as to cover a mouth or a nose of a user.

29. The antibacterial mask according to claim 19 , wherein the filter portion is shaped so as to cover a mouth and a nose of a user.

30. The antibacterial mask according to claim 19 , wherein the plurality of first piezoelectric yarns are arranged into a plurality of first piezoelectric fibers, each of the plurality of first piezoelectric fibers containing a set of yarns of the plurality of first piezoelectric yarns.

Assignees

• Murata Manufacturing Co

Inventors

• Inoue Takafumi
• TAKUMI Kenichiro
• Tamakura Daiji
• Ando Masamichi

Classifications

• D02G3/449

  Yarns or threads with antibacterial properties (filaments containing agents inhibiting growth of microorganisms D01F1/103) · CPC title

• A01N25/34

  Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group · CPC title

• A41D13/11

  Protective face masks, e.g. for surgical use, or for use in foul atmospheres (eye-masks A61F9/04 {; hoods affording protection against heat or harmful chemical agents A62B17/04}) · CPC title

• B03C3/28

  Plant or installations without electricity supply, e.g. using electrets · CPC title

• D10B2401/16

  antistatic; conductive · CPC title