Cookware and exhaust device

Patent metadata

Field	Value
Publication number	US-11415331-B2
Application number	US-201716465682-A
Country	US
Kind code	B2
Filing date	Dec 1, 2017
Priority date	Dec 2, 2016
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A ventilation apparatus according to the present invention comprises: a case having a flow hole; a flow guide positioned inside the case, the flow guide having an inflow opening that communicates with the flow hole, and the flow guide having a guide surface that slopes downward as the same extends outward; a swirler positioned in an area formed by the flow guide and configured to rotate in order to discharge a part of air introduced through the flow hole out of the case again, the swirler having a plurality of blades; a driving motor for rotating the swirler; and a grill member that covers the swirler outside the case and provides an air channel. The grill member comprises a grill rib that forms a suction channel for suctioning air and a discharge channel for discharging air. The discharge channel may be positioned outside the suction channel.

First claim

The invention claimed is:

1. A ventilation apparatus comprising:
a case having a flow hole defined therein;
a flow guide positioned within the case, wherein the flow guide includes an inlet communicating with the flow hole and a guide surface inclined downwardly and outwardly;
a swirler positioned in a region defined by the flow guide and configured to rotate to discharge a portion of air inflowed through the flow hole out of the case, the swirler comprising a plurality of blades;
a driving motor configured to rotate the swirler; and
a grill member that covers the swirler from an outside of the case and that defines an air flow path; and
a filter detachably disposed at the grill member,
wherein the grill member includes:
a first grill member that defines a suction passage, the filter being disposed at a lower portion of the first grill member,
a second grill member that is disposed outside of the first grill member and that defines a discharge passage configured to discharge air suctioned through the suction passage, the second grill member being positioned lower than the first grill member, and
a first connection part that connects the first grill member to the second grill member.

2. The ventilation apparatus of claim 1 , wherein the first grill member comprises:
first radial ribs that extend in a radial direction; and
first rounded ribs arranged concentrically and connected to the first radial ribs.

3. The ventilation apparatus of claim 2 , wherein the second grill member comprises:
second radial ribs that extend in the radial direction; and
second rounded ribs arranged concentrically and connected to the second radial ribs.

4. The ventilation apparatus of claim 3 , wherein a length of at least one of the first radial ribs is greater than a length of at least one of the second radial ribs.

5. The ventilation apparatus of claim 3 , wherein the second grill member further includes a protrusion that protrudes from the second grill member to support the filter.

6. The ventilation apparatus of claim 5 , wherein the protrusion includes a plurality of protrusions that are spaced apart from one another by a predetermined interval along a circumferential direction of one of the second rounded ribs.

7. The ventilation apparatus of claim 5 , wherein the protrusion has a round shape.

8. The ventilation apparatus of claim 1 , wherein the grill member further comprises:
an outer frame disposed outside of the second grill member, the outer frame being disposed higher than the second grill member; and
a second connection portion that connects the outer frame to the second grill member.

9. The ventilation apparatus of claim 8 , wherein the outer frame and the second connection portion are flush with each other.

10. The ventilation apparatus of claim 8 , wherein the outer frame has a circular ring shape, and
wherein the outer frame defines a plurality of fastening holes for fastening the case and the outer frame, the plurality of fastening holes being spaced apart from one another along a circumferential direction of the outer frame.

11. The ventilation apparatus of claim 10 , wherein the outer frame further defines an alignment cut at an outer rim of the outer frame, and
wherein the alignment cut is configured to engage with an alignment structure of the case and to guide an installation position of the grill member such that the plurality of fastening holes are aligned with predetermined positions of the case, respectively.

12. The ventilation apparatus of claim 1 , wherein the filter extends to a radial end of the first grill member, and the second grill member is exposed to the outside of the case.

13. The ventilation apparatus of claim 1 , wherein the first grill member is recessed upward relative to the second grill member and defines a filter mounting space configured to accommodate the filter therein.

14. The ventilation apparatus of claim 13 , wherein the second grill member comprises a plurality of protrusions that are spaced apart from one another along a circumferential direction and that protrudes radially inward to the filter mounting space.

Assignees

• Lg Electronics Inc

Inventors

• Lee Semi
• Lee Sangcheol
• Hwang Seonghoon
• Kim Wontae

Classifications

• F24C15/20

  Removing cooking fumes (parts, details or accessories of cooking-vessels for withdrawing or condensing cooking vapours from such vessels A47J36/38) · CPC title

• F24F7/10 Primary

  with air supply, or exhaust, through perforated wall, floor or ceiling (outlet members for directing or distributing air {into rooms or spaces, e.g. ceiling air-diffusers} F24F13/06) · CPC title

• F24C15/2035

  Arrangement or mounting of filters (F24C15/2021 takes precedence; filters per se B01D46/00) · CPC title

• F24F7/007

  with forced flow (using ducting systems F24F7/06) · CPC title

• F24C15/2028 Primary

  using an air curtain · CPC title