Cooking appliance

Patent metadata

Field	Value
Publication number	US-11454401-B2
Application number	US-202016739623-A
Country	US
Kind code	B2
Filing date	Jan 10, 2020
Priority date	Jan 11, 2019
Publication date	Sep 27, 2022
Grant date	Sep 27, 2022

Abstract

A cooking appliance includes a door frame that supports a heating part and is coupled to a door such that the heating part is disposed at the door.

First claim

What is claimed is:

1. A cooking appliance comprising:
a housing having a cooking compartment and including a bottom surface, both side surfaces, and a back surface, and having upper and front surfaces which are open;
a door that includes a door upper surface part that covers the upper surface of the housing and a door front surface part that is connected to a front side of the door upper surface part and covers the front surface of the housing, and rotatable about a rear side of the door upper surface part to open and close the upper and front surfaces of the housing;
a heating part; and
a door frame that supports the heating part and is coupled to the door,
wherein the door frame includes:
a heater mounting part to which the heating part is coupled; and
a coupling part that is coupled with the door upper surface part and supports the heater mounting part on the door upper surface part, wherein:
the heating part includes a heating element, a first connecting end disposed at an end of the heating element in a longitudinal direction, and a second connecting end disposed at an other end of the heating element in the longitudinal direction; and
the heater mounting part includes a first connecting end fixing part that fixes the first connecting end and a second connecting end fixing part that fixes the second connecting end,
wherein each of the first connecting end fixing part and the second connecting end fixing part includes:
a cover that surrounds an outer side of the respective first connecting end and second connecting end in a circumferential direction; and
a support wall which partitions a space formed by the cover into inner and outer spaces and, the first connecting end and second connecting end are fitted into the respective support wall, wherein:
the heating element is formed in a shape of a rod having a predetermined length;
each of the first connecting end and the second connecting end includes a cylindrical part that is formed in a cylindrical shape and is disposed at the respective end of the heating element in the longitudinal direction, and a key-shaped part that is disposed between the heating element and the respective cylindrical part and is formed in a flat hexahedral shape whose thickness is smaller than a diameter of the cylindrical part and whose width is larger than the diameter of the cylindrical part; and
each support wall includes a coupling hole that is formed to pass through the support wall and is formed in a shape corresponding to a shape of an outer circumferential surface of the cylindrical part, and a through-hole that is formed to pass through the support wall and is formed as a passage that connects the coupling hole and an outer portion of the support wall to each other.

2. The cooking appliance according to claim 1 , wherein:
the door frame covers a bottom portion of the door upper surface part; and
the heating part is installed on the door frame, and is disposed at the bottom portion of the door upper surface part.

3. The cooking appliance according to claim 1 , wherein the through-hole of the support wall is formed with a width corresponding to the thickness of the key-shaped part.

4. The cooking appliance according to claim 3 , wherein:
the heating part is moved in a first direction so that one of the first connecting end and the second connecting end passes through the through-hole and is inserted into the coupling hole of one support wall and takes a first posture, wherein the first posture is a posture in which a surface parallel to a thickness direction of the key-shaped part is disposed parallel to a width direction of the through-hole; and then
the heating part is moved in a second direction opposite to the first direction so that the other one of the first connecting end and the second connecting end passes through the through-hole and is inserted into the coupling hole of the other support wall and takes a second posture,
wherein the second posture is a posture in which the heating part has rotated by an angle about the longitudinal axis of the first heating part from the first posture.

5. The cooking appliance according to claim 3 , wherein:
each of the cylindrical part further includes an extension part that is formed to extend toward the respective key-shaped part; and
the extension part is formed to protrude outward from a surface parallel to a width direction of the respective key-shaped part so that a step is formed on the surface parallel to the width direction of the respective key-shaped part.

6. The cooking appliance according to claim 5 , wherein a separation distance (L 1 ) between the support wall of the first connecting end fixing part and the support wall of the second connecting end fixing part satisfies the following relational expression:
L H =L H1 +2 L H2 +2 L H3
L 1 =L H −L H2 −L H3

where L H is an entire length of the heating part, L H1 is a length of the heating element, L H2 is a distance between the end of one side of the heating element and the step, and L H3 is a distance between the step and an outermost end of the cylindrical part.

7. The cooking appliance according to claim 6 , wherein the separation distance (L 1 ) between the support wall of the first connecting end fixing part and the support wall of the second connecting end fixing part satisfies the following relational expression:
L 1 =L H1 +2 L H4

where L H4 is a length of the key-shaped part.

8. The cooking appliance according to claim 6 , further comprising an outer wall disposed outside of each of the support wall in the longitudinal direction of the heating element,
wherein a separation distance (L 2 ) between the support wall and the outer wall satisfies the following relational expression:
L 2 ≥L H3 .

9. The cooking appliance according to claim 8 , wherein:
at least a part of each cylindrical part of the heating part are inserted into a space surrounded by the cover, the support wall, and an outer wall of the respective first connecting end fixing part and second connecting end fixing part;
a plurality of connecting portions, each outer wall is connected to the coupling part through a respective connecting portion; and
a concave groove recessed from an upper surface of the coupling part is formed in the respective connecting portion.

10. A cooking appliance comprising:
a housing having a cooking compartment and including a bottom surface, both side surfaces, and a back surface, and having upper and front surfaces which are open;
a door that includes a door upper surface part that covers the upper surface of the housing and a door front surface part that is connected to a front side of the door upper surface part and covers the front surface of the housing, and rotatable about a rear side of the door upper surface part to open and close the upper and front surfaces of the housing;
a heating part; and
a door frame that supports the heating part and is coupled to the door,
wherein the door frame includes:
a heater mounting part to which the heating part is coupled; and
a coupling part that is coupled with the door upper surface part and supports the heater mounting part on the door upper surface part, wherein:
the heating part includes a heating element, a first connecting end disposed at an end of the heating element in a longitudinal direction, and a second connecting end disposed at an other end of the heating element in the longitudinal direction; and
the heater mounting part includes a first connecting end fixing part that fixes the first connecting end and a second connecting end fixing part that fixes the second connecting end,
wherein each of the f

Assignees

• Lg Electronics Inc

Inventors

• Kwag Dongseong
• Yun Donghyok
• Kim Hag Soo
• Yoon Sung Mun

Classifications

• F24C15/02 Primary

  Doors specially adapted for stoves or ranges · CPC title

• F24C15/162

  Co-operating with a door, e.g. operated by the door · CPC title

• F24C7/08

  Arrangement or mounting of control or safety devices · CPC title

• F24C7/082

  on ranges, e.g. control panels, illumination · CPC title

• H05B6/129

  induction ovens · CPC title