Food processing apparatus and light source with catalyst

Patent metadata

Field	Value
Publication number	US-2025031708-A1
Application number	US-202418918623-A
Country	US
Kind code	A1
Filing date	Oct 17, 2024
Priority date	Apr 27, 2022
Publication date	Jan 30, 2025
Grant date	—

Abstract

A food processing apparatus includes: a container that includes a space for accommodating a food item; a catalyst film that includes an activation surface in contact with the space; and a light source that is disposed closer to a principal surface of the catalyst film than to the activation surface in a thickness direction of the catalyst film, and emits ultraviolet light toward the catalyst film. The principal surface is on an opposite side of the catalyst film with respect to the activation surface. The catalyst film includes a surface layer including the activation surface and an absorption layer including the principal surface. The absorption layer contains an ultraviolet-light absorbing particle that absorbs a portion of the ultraviolet light.

First claim

1 . A food processing apparatus comprising:
a container that includes a space for accommodating a food item; a catalyst film that includes an activation surface in contact with the space; and a light source that is disposed closer to a principal surface of the catalyst film than to the activation surface in a thickness direction of the catalyst film, and emits ultraviolet light toward the catalyst film, the principal surface being on an opposite side of the catalyst film with respect to the activation surface, wherein the catalyst film includes a surface layer including the activation surface and an absorption layer including the principal surface, and the absorption layer contains an ultraviolet-light absorbing particle that absorbs a portion of the ultraviolet light.

2 . The food processing apparatus according to claim 1 , wherein
absorptance of the ultraviolet light by the catalyst film is at least 50%.

3 . The food processing apparatus according to claim 1 , wherein
the absorption layer includes an oxide binder.

4 . The food processing apparatus according to claim 3 , wherein
the oxide binder has a composition of Si m O n , Ti m O n , or Al m O n , where m is 1 or 2 and n is 2 or 3.

5 . The food processing apparatus according to claim 1 , wherein
the surface layer includes a metal oxide.

6 . The food processing apparatus according to claim 5 , wherein
the metal oxide has a composition of Ti m O n , where m is 1 or 2 and n is 2 or 3.

7 . The food processing apparatus according to claim 1 , further comprising:
a support member that is in contact with the catalyst film at the principal surface, and supports the catalyst film.

8 . The food processing apparatus according to claim 7 , wherein
the support member includes a hollow inside, and is in contact with the catalyst film at an outside of the support member, and the light source is disposed in the hollow.

9 . The food processing apparatus according to claim 8 , wherein
the support member includes glass.

10 . The food processing apparatus according to claim 1 , wherein
the thickness of the catalyst film is at least 2.6 μm and at most 18.2 μm.

11 . A light source with a catalyst comprising:
a catalyst film that includes an activation surface; and a light source that is disposed closer to a principal surface of the catalyst film than to the activation surface in a thickness direction of the catalyst film, and emits ultraviolet light toward the catalyst film, the principal surface being on an opposite side of the catalyst film with respect to the activation surface, wherein the catalyst film includes a surface layer including the activation surface and an absorption layer including the principal surface, and the absorption layer contains an ultraviolet-light absorbing particle that absorbs a portion of the ultraviolet light.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Yamaji Satoru
• Ino Daisuke
• Hashimoto Yasuhiro
• Ukai Kunihiro

Classifications

• A23L27/201

  Compounds of unspecified constitution characterised by the chemical reaction for their preparation (A23L27/215 takes precedence) · CPC title

• B01J19/123

  Ultraviolet light · CPC title

• B01J35/39

  Photocatalytic properties · CPC title

• B01J21/063

  Titanium; Oxides or hydroxides thereof · CPC title

• A23L5/30

  Physical treatment, e.g. electrical or magnetic means, wave energy or irradiation (cooking A23L5/10) · CPC title