Induction heating cooking device

Patent metadata

Field	Value
Publication number	US-9730278-B2
Application number	US-201414408224-A
Country	US
Kind code	B2
Filing date	Mar 10, 2014
Priority date	Mar 28, 2013
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

In order to provide an induction heating cooking device in which a supporting configuration of a heating coil unit is simple and can be easily assembled, and which can accurately and constantly maintain a distance between a top plate and heating coils, opposite side surfaces of a framework laid out below the top plate are configured to have first vertical parts, first horizontal parts, and second vertical parts. A heating coil supporting member that supports the heating coils is disposed to be bridged between the first horizontal parts of the opposite side surfaces of the framework, and the heating coil unit having the heating coil is configured to be securely supported by the first horizontal parts.

First claim

What is claimed is:

1. An induction heating cooking device comprising:
a top plate on which an object to be heated can be placed;
a generally box-shaped framework which has a bottom surface of an approximately rectangular shape, side surfaces, and an opening portion of an approximately rectangular shape formed above the bottom surface and which is provided below the top plate; and
a heating coil unit which is provided inside the framework, and which has
a heating coil that is capable of induction heating the object to be heated and
a heating coil supporting member that supports the heating coil, the heating coil supporting member including i) a coil receiving part that defines an outer periphery having substantially the same shape as an outer periphery of the heating coil and ii) coil installation parts provided at the outer periphery of the coil receiving part,

wherein the heating coil and the heating coil supporting member are provided as part of an integrated unit that forms the heating coil unit,
wherein at least a first set of opposite side surfaces of the framework are configured to have
first vertical parts that are formed by being bent upward at outer edge parts of the bottom surface,
first horizontal parts that are formed by being bent to an outer side at upper edge parts of the first vertical parts, and
second vertical parts that are formed by being bent upward at outer edge parts of the first horizontal parts,

wherein the opening portion is formed by upper edge parts of the second vertical parts, and
wherein the heating coil is disposed entirely between the second vertical parts of the first set of opposite side surfaces and at least one of the coil installation parts of the heating coil supporting member extends over and is fixed to one of the first horizontal parts of the first set of opposite side surfaces.

2. The induction heating cooking device according to claim 1 , wherein the first set of opposite side surfaces of the framework are configured to have further second horizontal parts that are formed by being bent to an outer side or an inner side at the upper edge parts of the second vertical parts, and upper surfaces of the second horizontal parts are configured to be in contact with the top plate.

3. The induction heating cooking device according to claim 1 ,
wherein a second set of opposite side surfaces of the framework are configured to have first vertical parts that are formed by being bent upward at outer edge parts of the bottom surface, first horizontal parts that are formed by being bent to an outer side at upper edge parts of the first vertical parts, and second vertical parts that are formed by being bent upward at outer edge parts of the first horizontal parts, and
wherein the induction heating cooking device has a joint member of which both end parts are placed on and fixed to two of the first horizontal parts of the second set of opposite side surfaces that are parallel and face each other in the framework, and
wherein a first coil installation part of the coil installation parts extends over and is fixed to one of the first horizontal parts of the first set of opposite side surfaces and a second coil installation of the coil installation parts part is fixed to the joint member.

4. The induction heating cooking device according to claim 1 , wherein installation positions of the heating coil supporting member are configured to be able to be changed to a front and rear direction or a right and left direction, relative to the first horizontal parts on the first set opposite side surfaces of the framework.

5. The induction heating cooking device according to claim 1 , wherein a circuit substrate that drive controls the heating coil is provided below the heating coil supporting member and is configured to be supported by the bottom surface of the framework.

6. The induction heating cooking device according to claim 1 , wherein the heating coil supporting member is configured by a non-magnetic metal.

7. An induction heating cooking device comprising:
a top plate on which an object to be heated can be placed;
a generally box-shaped framework which has a bottom surface of an approximately rectangular shape, side surfaces, and an opening portion of an approximately rectangular shape formed above the bottom surface, and which is provided below the top plate;
a heating coil unit which is provided inside the framework, and which has
a heating coil that is capable of induction heating the object to be heated and
a heating coil supporting member that supports the heating coil, the heating coil supporting member including i) a coil receiving part that defines an outer periphery having substantially the same shape as an outer periphery of the heating coil and ii) coil installation parts provided at the outer periphery of the coil receiving part; and

a plurality of heating coil unit supporting members that support the heating coil unit and are different from the heating coil supporting member,
wherein the heating coil and the heating coil supporting member are provided as part of an integrated unit that forms the heating coil unit,
wherein at least a first set of opposite side surfaces of the framework are configured to have
first vertical parts that are formed by being bent upward at outer edge parts of the bottom surface,
first horizontal parts that are formed by being bent to an outer side at upper edge parts of the first vertical parts, and
second vertical parts that are formed by being bent upward at outer edge parts of the first horizontal parts,

wherein the opening portion is formed by upper edge parts of the second vertical parts,
wherein the heating coil is disposed entirely between the second vertical parts of the first set of opposite side surfaces and the coil installation parts of the heating coil supporting member are fixed to the plurality of heating coil unit supporting members,
wherein a first heating coil unit supporting member of the plurality of heating coil unit supporting members is fixed to one of the first horizontal parts of the first set of opposite side surfaces.

8. The induction heating cooking device according to claim 7 ,
wherein a second set of opposite side surfaces of the framework are configured to have first vertical parts that are formed by being bent upward at outer edge parts of the bottom surface, first horizontal parts that are formed by being bent to an outer side at upper edge parts of the first vertical parts, and second vertical parts that are formed by being bent upward at outer edge parts of the first horizontal parts, and
wherein the induction heating cooking device has a joint member of which both end parts are placed on and fixed to two of the first horizontal parts of the second set of opposite side surfaces that are parallel and face each other in the framework,
wherein a second heating coil unit supporting member of the plurality of heating coil unit supporting members is supported by the joint member.

9. The induction heating cooking device according to claim 7 , wherein the first heating coil unit supporting member of the plurality of heating coil unit supporting members is provided with a reinforcement longitudinal wall that protrudes downward and that is in contact with an inner surface of one of the first vertical parts of the first set of opposite side surfaces.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Suzuki Hidekazu
• Takahashi Tomoya
• Ogawa Kenji
• Isago Hiroshi
• Ando Shumpei
• Yokono Masahiro
• Nagata Ryuuji
• Aihara Katsuyuki
• Ushio Shozo

Classifications

• H05B2206/022

  Special supports for the induction coils · CPC title

• H05B6/02

  Induction heating · CPC title

• H05B6/1209 Primary

  induction cooking plates or the like and devices to be used in combination with them · CPC title

• H05B6/1254

  using conductive pieces to direct the induced magnetic field · CPC title

• H05B6/062

  for cooking plates or the like · CPC title