Heater and heat-cooking apparatus

Abstract

The invention provides a heater for heating cooking equipment, which can uniformly heat cooking utensils. The heater (90) is provided with an electrothermal heater main body (91) and a heater housing (92). The heater main body (91) is provided with two terminal parts (912a, 912b), two outer peripheral parts (913a, 913b), two inner peripheral parts (914a, 914b), and two semicircular first connection parts (915a, 915b). The first connecting part (915a) is integrally connected with the outer peripheral part (913a) and the inner peripheral part (914a); the first connecting part (915b) is integrally connected with the outer peripheral part (913b) and the inner peripheral part (914b); the heater housing (92) covers the two terminal parts (912a, 912b).

Description

(19) State Intellectual Property Office (12) Invention Patent Application (10) Application Publication Number (43) Application Publication Date (21) Application Number 202610038014.5 (22) Application Date 2026.01.13 (30) Priority Data 2025-007241 2025.01.17 JP (71) Applicant: Shinbo Co., Ltd. Address: 110 Wakabadai, Meito-ku, Nagoya City, Aichi Prefecture, Japan (72) Inventors: Yasuki Kanamori, Yukio Kato, Kento Kawakita (74) Patent Agency: Shanghai Yinke Patent & Trademark Agency Co., Ltd. 31267 Patent Attorney: Yongping Jiang (51) Int.Cl. H05B 3 / 02 (2006.01) F24C 7 / 06 (2006.01) F24C 15 / 08 (2006.01) A47J 36 / 24(2006.01) A47J 27 / 00(2006.01) (54) Invention Title: Heater and Heating Cooking Equipment (57) Abstract: This invention provides a heater for heating cooking equipment that can uniformly heat cooking utensils; the heater (90) comprises an electric heater body (91) and a heater housing (92); the heater body (91) comprises two terminal portions (912a, 912b), two outer peripheral portions (913a, 913b), two inner peripheral portions (914a, 914b) and two semi-circular first connecting portions (915a, 915b); the first connecting portion (915a) is connected to the outer peripheral portion (913a) and the inner peripheral portion (914a) as a whole; the first connecting portion (915b) is connected to the outer peripheral portion (913b) and the inner peripheral portion (914b) as a whole; the heater housing (92) covers the two terminal portions (912a, 912b). Claims 2 pages, Description 14 pages, Drawings 13 pages, CN 122421102 A 2026.07.17 CN 1 22 42 11 02 A 1. A heater for heating a cooking device, characterized in that it comprises: an electric heater body; and a heater housing; the heater body comprising: two extensions, each having a first end and a second end located on a side opposite to the first end; two terminal portions, each disposed at the first end of the two extensions; two outer peripheral portions, each having a first end and a second end located on a side opposite to the first end, wherein the first end of one of the outer peripheral portions is integrally connected to the second end of one of the extensions, and the first end of the other outer peripheral portion is integrally connected to the second end of the other extension; two inner peripheral portions disposed further inward than the two outer peripheral portions, each having a first end and a second end located on a side opposite to the first end; andTwo first connecting portions, generally semi-circular in shape, wherein one of the first connecting portions is integrally connected to the second end of one of the outer peripheral portions and the second end of one of the inner peripheral portions, and the other first connecting portion is integrally connected to the second end of another of the outer peripheral portions and the second end of another of the inner peripheral portions, and the heater housing at least covers the two terminal portions. 2. The heater according to claim 1, characterized in that it further comprises two heater terminals respectively electrically connected to the two terminal portions, and the heater housing at least covers the connection portion between the two heater terminals and the two terminal portions. 3. The heater according to claim 1, characterized in that the distance (D1) between the second end of the inner peripheral portion and the second end of the outer peripheral portion is greater than the distance (D2) between the first end of the inner peripheral portion and the portion of the adjacent outer peripheral portion. 4. A heating and cooking device, characterized in that it comprises the heater according to any one of claims 1 to 3. 5. The heating and cooking device according to claim 4, characterized in that it further comprises: a shell; and an inner shell disposed within the shell and disposed with a gap between the inner shell and the shell, through which smoke is drawn horizontally. 6. The heating and cooking apparatus according to claim 5, characterized in that the outer casing has an exhaust port disposed at a position eccentrically located from the heater body in the horizontal direction, and the heater housing is disposed on the side opposite to the exhaust port relative to the heater body. 7. The heating and cooking apparatus according to claim 5, characterized in that the outer casing has an exhaust port disposed at a position eccentrically located from the heater body in the horizontal direction, and the heater housing is disposed on the same side as the exhaust port relative to the heater body. 8. The heating and cooking apparatus according to claim 4, characterized in that it further comprises a reflective member for reflecting heat, the reflective member comprising: a first inclined surface inclined downwards toward the central axis of the reflective member; and a second inclined surface inclined downwards away from the central axis, the two outer peripheral portions disposed above the second inclined surface, and the two inner peripheral portions disposed above the first inclined surface. 9. A heating and cooking apparatus, characterized in that it comprises: a heater having heater terminals, an electrically heated heater body having a terminal portion electrically connected to the heater terminals, and a heater housing covering a connection portion between the heater terminals and the terminal portion; and a cooling device for cooling the heater housing. 10. The heating and cooking apparatus according to claim 9, characterized in that the cooling device is a fan. 11. The heating and cooking apparatus according to claim 10, characterized in that…It also includes a conduit that guides airflow from the fan to the heater housing, the conduit including a portion whose inner diameter gradually decreases toward the heater housing. 12. A heater for heating a cooking appliance and detachable from a connector including connector terminals, characterized in that the heater comprises: an electrically heated heater body; and a heater terminal having a contact portion that can contact the connector terminal and is electrically connected to the heater body, and at least the contact portion is made of pure tungsten, a tungsten alloy, or a silver alloy. 13. A heating cooking appliance, characterized in that it comprises: the heater of claim 12; and a connector including a connector terminal that can contact the contact portion, and the heater is detachably mounted on the connector. Claims 2 / 2 pages 3 CN 122421102 A Heater and Heating Cooking Appliance Technical Field

[0001] The present invention relates to a heater for heating a cooking appliance. Furthermore, the present invention relates to a heating cooking appliance. Background Art

[0002] Conventionally, as a heater for heating cooking equipment, there is a known electric heater made by bending a sheath heater into a spiral shape (see Patent Document 1).

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Utility Model Application Publication No. 05-059110 Summary of the Invention

[0006] As an electric heater, there is a need for a heater that can uniformly heat cooking utensils such as nets over a wide area. In this respect, the electric heater disclosed in Patent Document 1 still has room for improvement.

[0007] The object of the present invention is to provide a heater for heating cooking equipment that can uniformly heat cooking utensils. Furthermore, the present invention provides a heating cooking equipment equipped with this heater.

[0008] The present invention provides a heater for heating cooking equipment, comprising:

[0009] an electrically heated heater body; and

[0010] a heater housing;

[0011] the heater body comprising:

[0012] two extensions, each having a first end and a second end located on a side opposite to the first end;

[0013] two terminal portions, each disposed at the first end of each of the two extensions;

[0014] two outer peripheral portions, each having a first end and a second end located on a side opposite to the first end, wherein the first end of one of the outer peripheral portions is integrally connected to the second end of one of the extensions, and the first end of the other outer peripheral portion is integrally connected to the second end of the other extension;

[0015] two inner peripheral portions disposed further inward than the two outer peripheral portions, each having a first end and a second end located on a side opposite to the first end; and

[0016] Two first connecting portions, generally semi-circular in shape, one of which is integrally connected to the second end of one of the outer peripheral portions and the second end of one of the inner peripheral portions, and the other first connecting portion is integrally connected to the second end of another of the outer peripheral portions and the second end of another of the inner peripheral portions.

[0017] The heater housing at least covers the two terminal portions.

[0018] (Effects of the Invention)

[0019] According to the present invention, a heater capable of uniformly heating cooking utensils can be provided. Brief Description of the Drawings

[0020] FIG1 is a perspective view of the countertop and the heating cooking device in use. Specification 1 / 14 pages 4 CN 122421102 A

[0021] FIG2 is a sectional view along line II-II of FIG1, wherein the frame is omitted.

[0022] FIG3 is an exploded perspective view of the heating cooking device and pipes.

[0023] FIG4 is an assembled perspective view of the heating cooking device and pipes, wherein the cooking utensils are omitted.

[0024] FIG5 is a perspective view of the inner shell viewed from a different perspective than FIG3.

[0025] FIG6A is a perspective view of the heater.

[0026] FIG6B is a side view of the heater.

[0027] FIG6C is a cross-sectional view along line VIC-VIC of FIG6A and a partial enlarged view thereof.

[0028] FIG6D is a perspective view of the heater after omitting the upper part of the heater housing from FIG6A.

[0029] FIG6E is a top view of the heater, wherein the upper part of the heater housing is omitted.

[0030] FIG7 is a top view of the reflective component and the heater showing the positional relationship between the reflective component and the heater body.

[0031] FIG8A is a perspective view of the connector.

[0032] FIG8B is a perspective view of the connector viewed from a different perspective than FIG8A.

[0033] FIG8C is a cross-sectional view along line VIIIC-VIIIC of FIG8A.

[0034] FIG8D is a cross-sectional view along line VIIID-VIIID of FIG8A.

[0035] FIG8E is a sectional view along line VIIIE-VIIIE of FIG8A.

[0036] FIG9 is a rear view of the heater and connector with the heater installed in the connector.

[0037] FIG10 is an enlarged view of part X of FIG2.

[0038] FIG11 is a sectional view of the heating cooking equipment and pipe involved in the modified example.

[0039] (Explanation of symbols)

[0040] 1000: heating cooking equipment; 10: outer shell; 11a: exhaust port; 40: inner shell; 50: reflective component; 51: first inclined surface; 52: second inclined surface; 60: cooking utensil; 90: heater; 91: heater body; 911a, 911b: extension; 912a,912b: Terminal portion; 913a, 913b: Outer peripheral portion; 914a, 914b: Inner peripheral portion; 915a, 915b: First connecting portion; 92: Heater housing; 95a, 95b: Heater terminals; 95a2, 95b2: Contact portion; 110: Connector; 113a, 113b: Connector terminals; 120: Cooling device (fan); 130: Conduit; 132: Second part; D1: Distance between the second end of the inner peripheral portion and the second end of the outer peripheral portion; D2: Distance between the first end of the inner peripheral portion and the portion of the outer peripheral portion adjacent to it; F: Airflow. Detailed Description

[0041] Hereinafter, the present invention will be described with reference to the accompanying drawings.

[0042] <1. Overview of the heating and cooking apparatus>

[0043] The heating and cooking apparatus 1000 is an apparatus for heating and cooking food. The heating and cooking apparatus 1000 may also be a heating and cooking apparatus for grilling food (e.g., grilled meat, grilled chicken skewers).

[0044] As shown in FIG1, the heating and cooking device 1000 may be an embedded type heating and cooking device in which most of the heating and cooking device 1000 can be accommodated in a frame T2 located below the top plate T1 of the countertop T.

[0045] The heating and cooking device 1000 mainly includes a shell 10, a filter 20, a shell cover 30, an inner shell 40, a reflector 50, a cooking utensil 60, a support ring 70, a top ring 80, a heater 90, a heater cover 100, a connector 110, a cooling device 120, and a conduit 130.

[0046] Hereinafter, each component of the heating and cooking device 1000 will be described in detail. The vertical direction in FIG1 will be described as the vertical direction of the heating and cooking device 1000. Furthermore, the direction orthogonal to the vertical direction will be described as the horizontal or lateral direction of the heating and cooking device 1000. Instruction manual 2 / 14 pages 5 CN 122421102 A

[0047] <2-1. Housing, Filter and Housing Cover>

[0048] As shown in Figures 2, 3 and 4, the housing 10 includes a bottom wall 11, a peripheral wall 12, an upper wall 13 and an upright portion 14.

[0049] As shown in Figure 2, the bottom wall 11 is laterally longer. The inner housing 40 is mounted on the bottom wall 11. An exhaust port 11a is provided through the bottom wall 11 at a position laterally offset relative to the mounting position of the inner housing 40. The filter 20 is provided next to the inner housing 40 to cover the exhaust port 11a. The filter 20 is used to filter oil contained in the smoke. A duct 2000 may be disposed below the filter 20. The interior of the duct 2000 communicates with the exhaust port 11a. An exhaust device 3000 (e.g., a fan, etc.) may be connected to the duct 2000.

[0050] As shown in FIG3, the peripheral wall 12 rises vertically from the bottom wall 11. The peripheral wall 12 has a first opening 12a. The first opening 12a is...The heater body 91, described later, is located on the side opposite to the exhaust port 11a and the filter 20.

[0051] The housing cover 30 is mounted on the peripheral wall 12. The housing cover 30 covers the heater housing 92, described later (refer to FIG. 10). The housing cover 30 has a lower plate 31, an upper plate 32, two side plates 33, and two flanges 34. The housing cover 30 may have a cuboid-shaped internal space defined by the lower plate 31, the upper plate 32, and the two side plates 33. The lower plate 31, the upper plate 32, and the two side plates 33 extend from the interior of the housing 10 through the first opening 12a to the exterior of the housing 10. A vent 31a is provided through the lower plate 31 at a position on the outside of the housing 10 (refer to FIG. 10). The two flanges 34 are disposed on the exterior of the housing 10. Each flange 34 is connected to each side plate 33.

[0052] The upper wall 13 has a circular inlet opening 13a for inserting the inner shell 40 into the outer shell 10. The upright portion 14 extends upward from the periphery of the inlet opening 13a.

[0053] <2-2. Inner Shell>

[0054] As shown in Figures 2, 3 and 5, the inner shell 40 includes a bottom wall 41, a first peripheral wall 42, a flange portion 43, a second peripheral wall 44 and a plurality of support portions 45. The inner shell 40 is disposed within the outer shell 10 such that there is a gap between the outer surface of the first peripheral wall 42 and the inner surface of the peripheral wall 12 of the outer shell 10. When the heating cooking device 1000 is used, water enters the inner shell 40.

[0055] The bottom wall 41 is generally circular. The first peripheral wall 42 is generally cylindrical. The first peripheral wall 42 rises from the bottom wall 41. The first peripheral wall 42 has a second opening 42a for the heater housing 92 to pass through (refer to Figures 3 and 5). The second opening 42a is disposed on the side opposite to the exhaust port 11a and the filter 20 relative to the heater body 91. The second opening 42a communicates with the first opening 12a. The flange 43 is generally annular. The flange 43 extends radially outward from the upper end of the first peripheral wall 42. The second peripheral wall 44 is generally cylindrical. The second peripheral wall 44 extends upward from the radially outer end of the flange 43.

[0056] A plurality of support portions 45 respectively support the reflector 50. A portion of the plurality of support portions 45 also supports the heater body 91. The plurality of support portions 45 includes a plurality of proximal support portions 451 (two in this embodiment) and a plurality of distal support portions 452 (two in this embodiment). The two proximal support portions 451 are disposed near the second opening 42a (i.e., near the heater housing 92). The two distal supports 452 are positioned further away from the second opening 42a than the two proximal supports 451 (i.e., further away from the heater housing 92). The two proximal supports 451 and the two distal supports 452 are spaced apart from each other circumferentially along the first peripheral wall 42 and are connected to the first peripheral wall 42. The two proximal supports 451...It has a step 451a. The two distal support portions 452 have grooves 452a. A portion of the reflective member 50 is disposed on the step 451a of the two proximal support portions 451 and in the groove 452a of the two distal support portions 452.

[0057] As shown in FIG2, the upper ends of the two distal support portions 452 are located above the upper ends of the two proximal support portions 451. The front end portion of the heater body 91 is placed on the upper ends of the two distal support portions 452. Thus, the two distal support portions 452 support not only the reflective member 50, but also the heater body 91. By using the two distal support portions 452 to support the heater body 91, it is possible to prevent the heater body 91 from deflecting.

[0058] <2-3. Reflective Member> Specification 3 / 14 page 6 CN 122421102 A

[0059] The reflective member 50 reflects the heat radiated from the heater body 91 to the reflective member 50 toward the cooking utensil 60. The reflective component 50 is made of, for example, a sheet metal. As shown in FIG2, the reflective component 50 is disposed within the inner shell 40 in a suspended state from the bottom wall 41 via the support portion 45 of the inner shell 40.

[0060] As shown in FIG2 and FIG3, the reflective component 50 has a circular opening 50a at its center. The reflective component 50 has a central axis extending vertically through the center of the opening 50a. The reflective component 50 has a first inclined surface 51 and a second inclined surface 52. The first inclined surface 51 is inclined downward toward the central axis. The side surface of the first inclined surface 51 has an inverted frustum shape. The second inclined surface 52 is inclined downward from the upper end of the first inclined surface 51 away from the central axis. The side surface of the second inclined surface 52 has a frustum shape. Dirt such as grease that drips from food onto the first inclined surface 51 or the second inclined surface 52 will drip down along the first inclined surface 51 or the second inclined surface 52 into the inner shell 40. In the radial direction, a protrusion 53 is provided between the first inclined surface 51 and the second inclined surface 52 of the reflective component 50.

[0061] <2-4. Cooking Utensils>

[0062] The cooking utensils 60 are components for placing food on them. As shown in FIG2, the cooking utensils 60 are mounted on the flange portion 43 of the inner shell 40. The cooking utensils 60 may be a component with multiple openings. The cooking utensils 60 may be a net or a roaster. When using the heating cooking equipment 1000, the top of the cooking utensils 60 is not covered by a lid or the like, and the top of the cooking utensils 60 is open.

[0063] <2-5. Support Ring and Top Ring>

[0064] As shown in FIG2, the support ring 70 is mounted on the top plate T1. The top ring 80 is mounted on the support ring 70. The top ring 80 has multiple suction ports 80a. The multiple suction ports 80a are located above the cooking utensils 60. When the exhaust device 3000 is runningSmoke generated from the food is drawn in through inlet 80a. The smoke drawn in through inlet 80a flows laterally (horizontally) toward filter 20 through the gap between the inner surface of the peripheral wall 12 of the outer shell 10 and the outer surface of the first peripheral wall 42 of the inner shell 40. The smoke reaching filter 20 is filtered by filter 20 and then flows downward along pipe 2000 and is discharged.

[0065] <2-6. Heater>

[0066] Heater 90 emits heat to heat cooking utensil 60 and food on cooking utensil 60. Heater 90 is detachably mounted to connector 110.

[0067] As shown in Figures 6A to 6E, heater 90 mainly includes heater body 91, heater housing 92, fireproof component 93 (refer to Figures 6D and 6E), insulating component 94 (refer to Figures 6D and 6E), two heater terminals 95a and 95b, and heater grounding terminal 96.

[0068] Heater body 91 is electric heating type. The heater body 91 can be formed by bending a linear sheath heater. The heater body 91 can be flat. The shape of the heater body 91 when viewed from above can be approximately the same as the shape of the heater body 91 when viewed from below.

[0069] The heater body 91 has a first surface 91a, a second surface 91b located on the side opposite to the first surface 91a, and a side surface 91c connecting the first surface 91a and the second surface 91b. As shown in FIG6C, the first surface 91a and the second surface 91b are planes that are approximately parallel to each other. The side surface 91c is convexly curved.

[0070] As shown in FIG2, the heater body 91 is positioned directly above the reflector 50 and directly below the cooking utensil 60. When using the heating cooking device 1000, the heater 90 is in a position where its first surface 91a and second surface 91b are approximately parallel to the horizontal direction. The heater 90 can be used with its first surface 91a facing upwards (facing the cooking appliance 60) or its second surface 91b facing upwards (facing the cooking appliance 60). The heater 80 can be switched between the first surface 91a facing upwards and the second surface 91b facing upwards by unplugging it from the connector 110 and flipping it upside down. The distance between the first surface 91a and the cooking appliance 60 in the first surface 91a-facing state is approximately the same as the distance between the second surface 91b and the cooking appliance 60 in the second surface 91b-facing state.

[0071] As shown in Figures 6D and 6E, the heater body 91 includes: two extension portions 911a and 911b; two terminal portions 912a and 912b; two outer peripheral portions 913a and 913b; two inner peripheral portions 914a and 914b; two first connecting portions 915a and 915b; and a central portion.916; and two second connecting portions 917a, 917b. Two extension portions 911a, 911b, two terminal portions 912a, 912b, two outer peripheral portions 913a, 913b, two inner peripheral portions 914a, 914b, two first connecting portions 915a, 915b, central portion 916, and two second connecting portions 917a, 917b are substantially located on the same plane.

[0072] The two extension portions 911a, 911b extend in a generally parallel straight line. Each extension portion 911a, 911b has a first end and a second end located on the side opposite to the first end. In addition, the two extension portions 911a, 911b need not necessarily be parallel to each other. Furthermore, the two extension portions 911a, 911b need not necessarily be straight, and may also be curved.

[0073] A terminal portion 912a is provided at the first end of the extension portion 911a. The terminal portion 912a is electrically connected to the junction portion 95a1 of the heater terminal 95a (described later) via a lead 97a. The terminal portion 912b is provided at the first end of the extension portion 911b. The terminal portion 912b is electrically connected to the junction portion 95b1 of the heater terminal 95b (described later) via a lead 97b.

[0074] The two outer peripheral portions 913a and 913b are bent toward each other in a direction away from each other. The outer peripheral portions 913a and 913b are arranged symmetrically. Each outer peripheral portion 913a and 913b has a first end and a second end located on the side opposite to the first end. The first end of the outer peripheral portion 913a is integrally connected to the second end of the extension portion 911a. The first end of the outer peripheral portion 913b is integrally connected to the second end of the extension portion 911b.

[0075] The inner peripheral portion 914a is disposed radially inward than the outer peripheral portion 913a. The inner peripheral portion 914a is adjacent to the outer peripheral portion 913a, but spaced apart from it. Similarly, the inner peripheral portion 914b is located radially inward than the outer peripheral portion 913b. The inner peripheral portion 914b is adjacent to the outer peripheral portion 913b, but spaced apart from it. The two inner peripheral portions 914a and 914b are curved in a direction away from each other. The inner peripheral portions 914a and 914b are arranged symmetrically. Each inner peripheral portion 914a and 914b has a first end and a second end located on the side opposite to the first end.

[0076] Each first connecting portion 915a and 915b has a generally semi-circular shape. The first connecting portions 915a and 915b are arranged symmetrically. The first connecting portion 915a connects the second end of the outer peripheral portion 913a to the second end of the inner peripheral portion 914a. The first connecting portion 915a is integrally connected to the second end of the outer peripheral portion 913a and the second end of the inner peripheral portion 914a. Similarly, the first connecting portion 915b connects the second end of the outer peripheral portion 913b and the second end of the inner peripheral portion 914b. The first connecting portion 915b is integrally connected to the second end of the outer peripheral portion 913b and the second end of the inner peripheral portion 914b.

[0077] As shown in FIG6E, the distance between the second end of the outer peripheral portion 913a and the second end of the inner peripheral portion 914a (i.e., the inner diameter of the first connecting portion 915a) is D1. Similarly, the distance between the second end of the outer peripheral portion 913b and the second end of the inner peripheral portion 914b (i.e., the inner diameter of the first connecting portion 915b) is also D1.

[0078] The distance between the outer peripheral portion 913a and the inner peripheral portion 914a gradually decreases as it moves away from the first connecting portion 915a. The distance D1 between the second end of the outer peripheral portion 913a and the second end of the inner peripheral portion 914a is greater than the distance D2 between the first end of the inner peripheral portion 914a and the portion of the outer peripheral portion 913a adjacent to it. Similarly, the distance between the outer peripheral portion 913b and the inner peripheral portion 914b gradually decreases as it moves away from the first connecting portion 915b. The distance D1 between the second end of the outer peripheral portion 913b and the second end of the inner peripheral portion 914b is greater than the distance D2 between the first end of the inner peripheral portion 914b and the portion of the outer peripheral portion 913b adjacent to it.

[0079] The central portion 916 is disposed radially inward than the two inner peripheral portions 914a, 914b. The central portion 916 is adjacent to the two inner peripheral portions 914a, 914b, but is spaced apart from them. When viewed from above, the central portion 916 has a C-shaped curve. The central portion 916 has a first end and a second end. The inner diameter of the central portion 916 is D3. Furthermore, the distance between the first end and the second end of the central portion 916 is D4. The inner diameter D3 is greater than the distance D4.

[0080] Each of the second connecting portions 917a, 917b has a generally semi-circular shape. The second connecting portion 917a and the second connecting portion specification page 5 / 14 8 CN 122421102 A 917b are arranged symmetrically. The second connecting portion 917a connects the first end of the inner peripheral portion 914a and the first end of the central portion 916. The second connecting portion 917a is integrally connected to the first end of the inner peripheral portion 914a and the first end of the central portion 916. Similarly, the second connecting portion 917b connects the first end of the inner peripheral portion 914b and the second end of the central portion 916. The second connecting portion 917b is integrally connected to the first end of the inner peripheral portion 914b and the second end of the central portion 916.

[0081] The distance between the inner peripheral portion 914a and the portion of the central portion 916 adjacent to it gradually decreases as it moves away from the second connecting portion 917a. The distance D5 between the first end of the inner peripheral portion 914a and the first end of the central portion 916 (i.e., the inner diameter of the second connecting portion 917a) is greater than the distance D6 between the second end of the inner peripheral portion 914a and the portion of the central portion 916 adjacent to it. Similarly, the distance between the inner peripheral portion 914b and the portion of the central portion 916 adjacent to it also moves further away from the second connecting portion.The distance D5 between the first end of the inner peripheral portion 914b and the second end of the central portion 916 (i.e., the inner diameter of the second connecting portion 917b) is greater than the distance D6 between the second end of the inner peripheral portion 914b and the portion of the central portion 916 adjacent to it.

[0082] As shown in FIG7, when viewed from above, the protrusion 53 of the reflective member 50 is located between the outer peripheral portion 913a and the inner peripheral portion 914a, and between the outer peripheral portion 913b and the inner peripheral portion 914b. In other words, the outer peripheral portions 913a and 913b are located directly above the second inclined surface 52, and the inner peripheral portions 914a and 914b are located directly above the first inclined surface 51. Thus, the heat from the heater body 91 can be effectively reflected by the reflective member 50.

[0083] As shown in Figures 6D and 6E, the heater housing 92 covers a portion of two extensions 911a and 911b, two terminal portions 912a and 912b, a portion of two heater terminals 95a and 95b, a portion of the heater grounding terminal 96, and two leads 97a and 97b. The connection portion between the two terminal portions 912a and 912b and the two heater terminals 95a and 95b is disposed within the heater housing 92 and is thus covered by the heater housing 92.

[0084] In the following description, "front" means a position relatively close to the heater body 91, and "rear" means a position relatively far from the heater body 91.

[0085] As shown in Figure 6A, the heater housing 92 can be cuboid in shape. The heater housing 92 includes a lower plate 921, an upper plate 922, a front plate 923, a rear plate 924, and two side plates 925. The heater housing 92 also includes two terminal protection portions 926a and 926b respectively disposed on the two side plates 925. Each terminal protection part 926a, 926b protects the heater terminals 95a, 95b and the heater grounding terminal 96 from impact, thereby preventing them from being damaged. Specifically, for example, in the event of a fall of the heater 90, each terminal protection part 926a, 926b will contact the ground before the heater terminals 95a, 95b and the heater grounding terminal 96, thereby preventing the heater terminals 95a, 95b and the heater grounding terminal 96 from colliding with the ground. Thus, the terminal protection parts 926a, 926b prevent the heater terminals 95a, 95b and the heater grounding terminal 96 from being damaged. The heater terminals 95a, 95b and the heater grounding terminal 96 are disposed between the terminal protection parts 926a and 926b. Each terminal protection part 926a, 926b extends rearward beyond the heater terminals 95a, 95b and the heater grounding terminal 96. Furthermore, the upper ends of each terminal protection part 926a, 926b are located higher than the upper ends of the heater terminals 95a, 95b and the heater grounding terminal 96.The lower end of 926b is located further below the lower ends of heater terminals 95a, 95b and heater grounding terminal 96. Each terminal protection part 926a, 926b may be plate-shaped. Each terminal protection part 926a, 926b may be detachable from each side plate 925, or may be integrally formed with each side plate 925 and inseparable.

[0086] The heater housing 92 may be made of a metallic material. When the heater housing 92 is magnetically connected to the connector 110, at least the rear plate 924 of the heater housing 92 is made of a material that can be magnetically attracted to a permanent magnet (e.g., ferritic stainless steel), or includes a portion made of such a material. The entire heater housing 92 may also be made of a material that can be magnetically attracted to a permanent magnet.

[0087] The heater housing 92 is disposed relative to the heater body 91 on the side opposite to the exhaust port 11a and the filter 20 and is inside the housing cover 30 on page 6 / 14 of the specification CN 122421102 A. As shown in Figure 10, the heater housing 92 and the housing cover 30 are arranged with gaps. That is, there are gaps between the lower plate 921 of the heater housing 92 and the lower plate 31 of the housing cover 30, between the upper plate 922 of the heater housing 92 and the upper plate 32 of the housing cover 30, and between the two side plates 925 of the heater housing 92 and the two side plates 33 of the housing cover 30. Furthermore, the rear part of the lower plate 921 is positioned directly above the vent 31a of the lower plate 31.

[0088] As shown in Figures 6D and 6E, the fireproof component 93 prevents grease and other contaminants from entering the heater housing 92. This prevents fire and also prevents aging of components inside the heater housing 92 (e.g., terminal portions 912a, 912b and heater terminals 95a, 95b, etc.). As shown in Figures 6D and 6E, the fireproof component 93 is disposed inside the heater housing 92 at a position that contacts the front plate 923. The fireproof component 93 can be made of pulp mixed with gypsum.

[0089] An insulating member 94 is disposed at the rear of the heater housing 92 within the heater housing 92. Two heater terminals 95a, 95b and a heater ground terminal 96 extend from the interior of the heater housing 92 through the insulating member 94 to the exterior of the heater housing 92. The insulating member 94 may be made of alumina, for example. Alumina has better durability than porcelain. Therefore, even if the insulating member 94 is subjected to impact, it will not crack like porcelain.

[0090] The heater terminal 95a includes a connecting portion 95a1 and a contact portion 95a2. The connecting portion 95a1 is the portion disposed within the heater housing 92 and connected to the lead 97a. The contact portion 95a2 is the portion that can contact the contact portion 113a2 of the connector terminal 113a described later (refer to FIG. 8C). In this embodiment, the contact portion 95a2 is the portion of the heater terminal 95a from the heater housing 92.The end of the portion extending outward. Similarly, heater terminal 95b includes a connecting portion 95b1 and a contact portion 95b2. Connecting portion 95b1 is a portion disposed within heater housing 92 and connected to lead wire 97b. Contact portion 95b2 is a portion that can contact contact portion 113b2 of connector terminal 113b described later (refer to FIG. 8D). In this embodiment, contact portion 95b2 is the end of the portion of heater terminal 95b extending outward from heater housing 92.

[0091] If contact portions 95a2 and 95b2 contact contact portions 113a2 and 113b2 of connector terminals 113a and 113b respectively, then each heater terminal 95a and 95b is electrically connected to connector terminals 113a and 113b respectively. If power is applied to heater 90 while each heater terminal 95a and 95b is electrically connected to connector terminals 113a and 113b, current flows through heater body 91, and heater body 91 heats up. Here, the contacts 95a2 and 95b2 come into contact with the contacts 113a2 and 113b2 of the connector terminals 113a and 113b. When electricity is applied, the temperature becomes high, which may cause melting. If the contacts 95a2 and 95b2 melt, they may be fused to the contacts 113a2 and 113b2. Therefore, at least the contacts 95a2 and 95b2 are preferably made of a material capable of withstanding high temperatures without melting. Examples of such materials include pure tungsten, tungsten alloys, or silver alloys. Specific examples of alloys include silver-tungsten alloys or silver-tin oxide alloys, but these are not limited to these. The material of each contact 95a2 and 95b2 may also differ from the material of the main body of the heater terminals 95a and 95b (the parts other than the contacts 95a2 and 95b2). Each contact portion 95a2, 95b2 can also be made by coating (e.g., spraying), cold-pressing, or brazing the aforementioned material onto the main body portion of the heater terminals 95a, 95b. Alternatively, the entire heater terminals 95a, 95b can also be made of the aforementioned material.

[0092] The heater ground terminal 96 can be electrically connected to the connector ground terminal 114 described later. The heater ground terminal 96 is fixed to the heater housing 92 by a metal fitting. Therefore, the heater ground terminal 96 is electrically connected to the heater housing 92. Furthermore, the heater ground terminal 96 is provided as needed, and therefore may not be provided.

[0093] <2-7. Heater Cover>

[0094] The heater cover 100 prevents grease and other contaminants from entering the heater housing 92. Furthermore, the heater cover 100 is also used to reliably connect the heater 90 to the connector 110. The heater cover 100 can be a different component from the heater 90. As shown in Figure 3, the heater cover 100 includes an upper plate 101, a front plate 102, and two side plates 103. The upper plate 101 is approximately horizontal.Extending in a parallel direction. The front plate 102 is substantially perpendicular to the upper plate 101 and extends downward from the upper plate 101. The front plate 102 has openings through which two extensions 911a, 911b pass. In addition, the front plate 102 can be tilted rearward. As shown in FIG4, the cover 100 is mounted on the heater 90 in a manner that covers the second opening 42a of the inner shell 40.

[0095] <2-8. Connector>

[0096] The connector 110 is a component for mounting the heater 90 and electrically connecting the heater 90 to a power source. As shown in FIG8A and FIG8B, the connector 110 includes a connector frame 111, an insulating component 112, two connector terminals 113a, 113b, a connector ground terminal 114, and two permanent magnets 115.

[0097] The connector frame 111 is mounted on the flange 34 (refer to FIG. 3) of the housing cover 30 and the conduit 130 (refer to FIG. 3) described later. As shown in FIG. 8A and FIG. 8B, the front surface of the connector frame 111 has two openings 111a. The openings 111a are respectively provided on both sides of the insulating member 112. Two permanent magnets 115 are mounted on the connector frame 111 and protrude from the openings 111a.

[0098] The insulating member 112 is mounted on the connector frame 111. As shown in FIG. 8C to FIG. 8E, two connector terminals 113a, 113b and a connector grounding terminal 114 pass through the insulating member 112.

[0099] The connector terminal 113a is electrically connected to the power supply through a lead and a switch. As shown in FIG. 8C, the connector terminal 113a includes a mating portion 113a1 and a contact portion 113a2. The connecting portion 113a1 is the part of the connector terminal 113a that protrudes outward from the insulating member 112 and connects to the lead wire. The contact portion 113a2 is the part that can contact the contact portion 95a2 of the heater terminal 95a. In this embodiment, the contact portion 113a2 is the end located on the side opposite to the connecting portion 113a1. Similarly, the connector terminal 113b is electrically connected to the power supply via a lead wire and a switch. As shown in FIG8D, the connector terminal 113b includes a connecting portion 113b1 and a contact portion 113b2. The connecting portion 113b1 is the part of the connector terminal 113b that protrudes outward from the insulating member 112 and connects to the lead wire. The contact portion 113b2 is the part that can contact the contact portion 95b2 of the heater terminal 95b. In this embodiment, the contact portion 113b2 is the end located on the side opposite to the connecting portion 113b1.

[0100] To prevent the contacts 113a2 and 113b2 from melting and bonding to the contacts 95a2 and 95b2 when energized, at least the contacts 113a2 and 113b2 are preferably made of a high-temperature resistant material that will not melt. Examples of such materials include pure tungsten, etc.Tungsten alloys or silver alloys, such as silver-tungsten alloys or silver-tin oxide alloys, can be used as specific examples of alloys, but are not limited to these. The material of each contact portion 113a2, 113b2 may be different from the material of the main body of the connector terminals 113a, 113b (excluding the contact portions 113a2, 113b2). Each contact portion 113a2, 113b2 may be made by coating (e.g., spraying), cold-pressing, or brazing the aforementioned material onto the main body of the connector terminals 113a, 113b. Alternatively, the entire connector terminals 113a, 113b may also be made of the aforementioned material.

[0101] A wiring is connected to the protrusion protruding outward through the insulating member 112 in the connector grounding terminal 114. This wiring is electrically connected to the grounding wire. As shown in FIG8E, the end of the connector grounding terminal 114 opposite to the protrusion may contact the heater grounding terminal 96. The heater grounding terminal 96 contacts the connector grounding terminal 114, and the heater grounding terminal 96 is electrically connected to the connector grounding terminal 114. As described above, the heater grounding terminal 96 is electrically connected to the heater housing 92. Therefore, if the heater grounding terminal 96 is electrically connected to the connector grounding terminal 114, the heater housing 92 will be grounded. This prevents the user from getting an electric shock when holding the heater housing 92 to install the heater 90 onto the connector 110 or when removing the heater 90 from the connector 110. In addition, if the heater grounding terminal 96 is not provided, the connector grounding terminal 114 is not needed.

[0102] As shown in FIG9, when installing the heater 90 onto the connector 110, the terminal protection parts 926a and 926b are first inserted into the opening 111a. After the terminal protection parts 926a and 926b are inserted into the opening 111a, the rear plate 924 of the heater housing 92 is attracted to the permanent magnet 115 by magnetic force. By using the magnetic attraction of the permanent magnet 115 to the heater housing 92, the heater 90 can be detachably mounted to the connector 110. Furthermore, as long as the heater housing 92 can be detachably mounted to the connector 110, the connection method between the heater housing 92 and the connector 110 is not limited to magnetic force. Specification 8 / 14 pages 11 CN 122421102 A

[0103] <2-9. Cooling Device and Conduit>

[0104] The cooling device 120 is used to cool the heater housing 92. The cooling device 120 is electrically connected to a power source via leads and a switch. The cooling device 120 can be an air-cooled device, such as a fan. As shown in FIG10, the airflow F from the fan is guided to the heater housing 92 by the conduit 130. The conduit 130 is disposed outside the housing 10 and below the housing cover 30. Furthermore, the conduit 130 is mounted such that its upper end contacts the lower surface of the lower plate 31 of the housing cover 30. The catheter 130 has an inlet 130a and an outlet 130b.The outlet 130b of the conduit 130 is connected to the vent 31a of the lower plate 31. A fan is installed near the inlet 130a of the conduit 130.

[0105] The conduit 130 can be square or cylindrical. The opening area of ​​the outlet 130b can be smaller than the cross-sectional area of ​​the conduit 130. The inner diameter of the conduit 130 near the outlet 130b can be smaller than the inner diameter of the conduit 130 near the inlet 130a. For example, the conduit 130 can have a first portion 131 with an inlet 130a and a second portion 132 with an outlet 130b, the inner diameter of the first portion 131 being approximately constant along the central axis of the first portion 131, while the inner diameter of the second portion 132 gradually decreases toward the outlet 130b (heater housing 92). Alternatively, the entire conduit 130 can be configured such that, like the second portion 132, the inner diameter gradually decreases toward the outlet 130b.

[0106] The switch of the cooling device 120 can share the switch of the heater 90, thereby allowing the cooling device 120 to turn on and off synchronously with the turn-on and turn-off of the heater 90. Alternatively, the switch of the cooling device 120 can be separate from the switch of the heater 90, thereby allowing the cooling device 120 to be turned on and off independently of the turn-on and turn-off of the heater 90.

[0107] As shown in FIG. 10, the airflow F generated by the fan (cooling device 120) rises within the duct 130, passes through the outlet 130b and the vent 31a, and reaches the lower plate 921 of the heater housing 92 and the connection portion between the heater housing 92 and the connector 110. This cools the lower plate 921 and the connection portion between the heater housing 92 and the connector 110. The airflow F continues to rise along the gap between the side plate 925 of the heater housing 92 and the side plate 33 of the housing cover 30 to reach the upper plate 922 of the heater housing 92. Then, the airflow F cools the side plate 925 and the upper plate 922. Thus, the cooling device 120 cools the heater housing 92. By providing the conduit 130, the airflow F can be guided to the heater housing 92, thereby effectively cooling the heater housing 92.

[0108] <3. Effects>

[0109] As shown in FIG6E, the heater body 91 has two extensions 911a, 911b, two terminal portions 912a, 912b, two outer peripheral portions 913a, 913b, two inner peripheral portions 914a, 914b, and two semi-circular first connecting portions 915a, 915b. By adopting this structure of the heater body 91, a large area of ​​the cooking utensil 60 can be heated evenly.

[0110] If grease or other stains enter the heater housing 92, it may cause a fire, or it may cause the components inside the heater housing 92, such as the terminal portions 912a, 912b or the heater terminals 95a, 95b, to age. Therefore, by providing the heater housing 92, it is possible to prevent fire and prevent the components inside the heater housing 92 from aging.

[0111] The distance D1 between the second end of the inner peripheral portion 914a and the second end of the outer peripheral portion 913a is greater than the distance D2 between the first end of the inner peripheral portion 914a and the portion of the adjacent outer peripheral portion 913a. Furthermore, the distance D1 between the second end of the inner peripheral portion 914b and the second end of the outer peripheral portion 913b is greater than the distance D2 between the first end of the inner peripheral portion 914b and the portion of the adjacent outer peripheral portion 913b. By adopting this structure, the bending radius of the first connecting portions 915a and 915b can be increased when manufacturing the heater body 91 by bending the sheath heater. This reduces the stress applied to the first connecting portions 915a and 915b, thereby improving their durability. Furthermore, by adopting this structure, the gaps between the outer peripheral portion 913a and the inner peripheral portion 914a, as well as the gaps between the outer peripheral portion 913b and the inner peripheral portion 914b, can be increased, allowing grease dripping from the food to pass through these gaps. As a result, grease can be prevented from accumulating on the outer peripheral portions 913a and 913b and the inner peripheral portions 914a and 914b, thus preventing grease from igniting and causing a column of fire to emerge from the heater body 91.

[0112] The distance D5 between the first end of the inner peripheral portion 914a and the first end of the central portion 916 is greater than the distance D6 between the second end of the inner peripheral portion 914a and the portion of the central portion 916 adjacent to it. Furthermore, the distance D5 between the first end of the inner peripheral portion 914b and the second end of the central portion 916 is greater than the distance D6 between the second end of the inner peripheral portion 914b and the portion of the central portion 916 adjacent to it. By adopting this structure, the bending radius of the second connecting portions 917a and 917b can be increased when the heater body 91 is manufactured by bending the sheath heater. Therefore, the stress applied to the second connecting portions 917a and 917b can be reduced, thereby improving the durability of the second connecting portions 917a and 917b. Furthermore, by adopting this structure, the gaps between the inner peripheral portion 914a and the central portion 916, and between the inner peripheral portion 914b and the central portion 916, can be increased, allowing grease dripping from the food to pass through these gaps. As a result, grease accumulation on the inner peripheral portions 914a and 914b, and on the central portion 916, can be prevented, thus preventing grease ignition and the emission of a flame column from the heater body 91.

[0113] The inner diameter D3 of the central portion 916 is greater than the distance D4 between the first end and the second end of the central portion 916. By adopting this structure, the bending radius of the central portion 916 can be increased when manufacturing the heater body 91 by bending the sheath heater. Therefore, the stress applied to the central portion 916 can be reduced, thereby improving the durability of the central portion 916. Furthermore, by adopting this structure, the stress applied to the central portion 916 can be reduced, thereby improving the durability of the central portion 916.By adopting this structure, the inner space of the central portion 916 can be increased, so that grease dripping from the food can drip through this inner space. As a result, grease can be prevented from accumulating on the central portion 916, thus preventing grease from igniting and causing a column of flame to emerge from the heater body 91.

[0114] As described in Patent Document 1, the upper surface of a spiral electric heater is usually flat. Furthermore, in a spiral electric heater, if the gap between the sheath heaters is large, the cooking utensils cannot be heated evenly, so the number of turns of the sheath heaters is increased and the gap between the sheath heaters is reduced. However, if the gap between the sheath heaters is small, it is difficult for grease dripping from the food to drip through the gap, so grease tends to accumulate on the upper surface of the electric heater. Furthermore, the fact that the upper surface of the electric heater is flat also contributes to the tendency for grease to accumulate on the upper surface of the electric heater. If grease accumulates on the upper surface of the electric heater, there is a problem that a column of flame can easily emerge from the electric heater. Therefore, to reduce the amount of grease residue, the diameter (linewidth) of the sheathed heater can be reduced to decrease the width of the upper surface of the electric heater. However, if the diameter of the sheathed heater is reduced, the gap between the sheathed heaters will increase, which may result in uneven heating of the cooking utensils. In this regard, as shown in FIG6C, the heater body 91 of the heater 90 of the present invention has a first surface 91a as a plane, a second surface 91b as a plane, and a convex curved side surface 91c. More specifically, in cross-section, the first surface 91a and the second surface 91b of each of the extension portions 911a, 911b, the outer peripheral portions 913a, 913b, the inner peripheral portions 914a, 914b, the first connecting portion 915a, 915b, the central portion 916, and the second connecting portions 917a, 917b are all planes, while their side surfaces 91c are convex curved. By making the side 91c convexly curved, the width d2 of the first surface 91a and the second surface 91b can be reduced without reducing the diameter d1 of each part constituting the heater body 91 (e.g., the outer peripheral portion 913a, etc.). Since the width d2 of the first surface 91a and the second surface 91b can be reduced, and the grease dripping onto the side 91c can drip along the convexly curved side 91c, the amount of grease remaining on the heater body 91 can be reduced. Furthermore, since the diameter d1 of each part of the heater body 91 does not need to be reduced, a large area can be heated using each part even without reducing the gap between each part. Since the gap between each part of the heater body 91 does not need to be reduced, the size of the heater body 91 can be increased, thereby enabling uniform heating to the vicinity of the outer peripheral portion of the cooking utensil 60 using the heater body 91.

[0115] The front plate 102 of the heater cover 100 is substantially perpendicular to the top plate 101. Therefore, for example, when it is inclined forward relative to the front plate 102,Compared to the previous configuration, the front panel 102 is less likely to interfere with the heater body 91, thus allowing for a larger size of the heater body 91. This enables uniform heating of the cooking appliance 60 to the vicinity of the heater body 91.

[0116] By laterally drawing in smoke, the height of the outer casing 10 can be reduced. Therefore, when the user cleans the inside of the outer casing 10 through the inlet opening 13a, cleaning becomes easier because the bottom wall 11 is located near the inlet opening 13a.

[0117] As shown in FIG2, the heater housing 92 is positioned opposite the exhaust port 11a to the heater body 91, preventing the heater housing 92 from being contaminated by grease or other stains contained in the inhaled smoke. Furthermore, when the heating cooking appliance 1000 is equipped with a cooling device 120, since the filter 20 and the pipe 2000 are not located below the heater housing 92, space for arranging the cooling device 120 can be ensured.

[0118] As shown in FIG. 7, since the two outer peripheral portions 913a and 913b are positioned above the second inclined surface 52 of the reflective member 50, most of the heat radiated downwards from the two outer peripheral portions 913a and 913b will reach the second inclined surface 52. Therefore, the heat radiated downwards from the two outer peripheral portions 913a and 913b can be effectively reflected onto the cooking utensil 60 via the second inclined surface 52. Furthermore, since the two inner peripheral portions 914a and 914b are positioned above the first inclined surface 51 of the reflective member 50, most of the heat radiated downwards from the two inner peripheral portions 914a and 914b will reach the first inclined surface 51. Therefore, the heat radiated downwards from the two inner peripheral portions 914a and 914b can be effectively reflected onto the cooking utensil 60 via the first inclined surface 51.

[0119] If the temperature of the heater housing 92 becomes too high when the heating cooking device 1000 is operating, components inside the heater housing 92, such as the heater terminals 95a and 95b, will age due to the heat. Therefore, by using the cooling device 120 to cool the heater housing 92, it is possible to prevent the components inside the heater housing 92 from aging due to heat.

[0120] By using a fan as the cooling device 120, the cost associated with the cooling device 120 can be reduced.

[0121] The conduit 130 includes a second portion 132 whose inner diameter gradually decreases toward the heater housing 92, thus enabling the airflow F generated by the fan to be concentrated on the heater housing 92. As a result, the heater housing 92 can be effectively cooled.

[0122] The contact portions 95a2 and 95b2 of the heater terminals 95a and 95b are made of pure tungsten, tungsten alloy, or silver alloy, thus preventing the contact portions 95a2 and 95b2 from melting when energized. As a result, it is possible to prevent the contact portions 95a2 and 95b2 from melting onto the contact portions 113a2 and 113b2 of the connector terminals 113a and 113b.

[0123] The contact portions 113a2 and 113b2 of the connector terminals 113a and 113b are made of pure tungsten, tungsten alloy, or silver alloy, thus preventing the contact portions 113a2 and 113b2 from melting when energized. This prevents the contact portions 113a2 and 113b2 from melting into the contact portions 95a2 and 95b2 of the heater terminals 95a and 95b.

[0124] <4. Modifications>

[0125] The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the invention. Hereinafter, modifications of the present invention will be described. Without departing from the spirit of the invention, the following modifications can be applied individually to the above embodiments or appropriately combined with them.

[0126] (4-1) The heater 90 can also be used in a so-called upward-suction type heating and cooking device where smoke is drawn by an exhaust hood disposed above the heating and cooking device 1000.

[0127] (4-2) The heater 90 may also be electrically connected to the power supply without using the connector 110. For example, the heater 90 may not have heater terminals 95a, 95b and heater ground terminal 96, and the terminal portions 912a, 912b may be electrically connected to the power supply via leads without using the connector 110. In the case where the heater 90 does not have heater terminals 95a, 95b and heater ground terminal 96, the heater housing 92 at least covers the terminal portions 912a, 912b (more specifically, covers the connection portion between the terminal portions 912a, 912b and the leads) to protect the terminal portions 912a, 912b.

[0128] (4-3) The structure for cooling the heater housing 92 by the cooling device 120 can be applied to any electric heater 90 having a heater housing 92 regardless of the shape of the heater body 91. Therefore, this structure is applicable not only to heaters used in circular heating cooking devices 1000 where the cooking utensil 60 and top ring 80 are circular when viewed from above, but also to heaters used in square heating cooking devices 1000 where the cooking utensil 60 and top ring 80 are rectangular when viewed from above.

[0129] (4-4) The cooling device 120 is not limited to a fan. The cooling device 120 may also be a water-cooled device, for example.

[0130] (4-5) The housing cover 30 may be provided as needed. The housing cover 30 may not be provided, and the airflow F may be blown directly from the outlet 130b of the duct 130 to the heater housing 92. Furthermore, the duct 130 may also be provided as needed. The duct 130 may not be provided, and a fan may be installed around the heater housing 92.

[0131] (4-6) As shown in FIG11, the heater housing 92 may also be configured relative to the heater body 91 at the exhaust port 11a.On the same side. In the heating and cooking apparatus 1000 according to this variation, the first opening 12a of the outer shell 10, the second opening 42a of the shell cover 30 and the inner shell 40 are arranged on the same side as the exhaust port 11a relative to the heater body 91. By arranging the heater housing 92 on the same side as the exhaust port 11a, the lateral dimension of the heating and cooking apparatus 1000 can be reduced. At this time, for example, the cooling device 120 can be arranged next to the heater housing 92.

[0132] <5. Notes>

[0133] (Item 1)

[0134] A heater for heating cooking equipment, comprising:

[0135] an electrically heated heater body; and

[0136] a heater housing;

[0137] the heater body comprising:

[0138] two extensions, each having a first end and a second end located on a side opposite to the first end;

[0139] two terminal portions, each disposed at the first end of each of the two extensions;

[0140] two outer peripheral portions, each having a first end and a second end located on a side opposite to the first end, wherein the first end of one of the outer peripheral portions is integrally connected to the second end of one of the extensions, and the first end of the other outer peripheral portion is integrally connected to the second end of the other extension;

[0141] two inner peripheral portions disposed further inside than the two outer peripheral portions, each having a first end and a second end located on a side opposite to the first end; and

[0142] Two first connecting portions, generally semi-circular in shape, wherein one of the first connecting portions is integrally connected to the second end of one of the outer peripheral portions and the second end of one of the inner peripheral portions, and the other first connecting portion is integrally connected to the second end of another of the outer peripheral portions and the second end of another of the inner peripheral portions,

[0143] the heater housing at least covers the two terminal portions.

[0144] (Item 2)

[0145] The heater according to item 1, wherein,

[0146] it further comprises two heater terminals respectively electrically connected to the two terminal portions,

[0147] the heater housing covers the connection portion between the two heater terminals and the two terminal portions.

[0148] (Item 3)

[0149] The heater according to item 2, wherein,

[0150] the heater is detachable from a connector having two connector terminals,

[0151] each of the two heater terminals has a contact portion that can contact the two connector terminals,

[0152] at least the contact portion is made of pure tungsten, a tungsten alloy, or a silver alloy, preferably made of pure tungsten, a silver-tungsten alloy, or a silver-tin oxide alloy.

[0153] (Item 4)

[0154] The heater according to any one of items 1 to 3, wherein,

[0155] The distance (D1) between the second end of the inner peripheral portion and the second end of the outer peripheral portion is greater than the distance (D2) between the first end of the inner peripheral portion and the portion of the outer peripheral portion adjacent to it.

[0156] (Item 5) Specification 12 / 14 pages 15 CN 122421102 A

[0157] The heater according to any one of items 1 to 4, wherein,

[0158] it further includes: a central portion having a first end and a second end, and disposed further inside than the two inner peripheral portions; and

[0159] two second connecting portions,

[0160] one of the second connecting portions is integrally connected to the first end of one of the inner peripheral portions and the first end of the central portion, and the other second connecting portion is integrally connected to the first end of the other inner peripheral portion and the second end of the central portion.

[0161] (Item 6)

[0162] The heater according to item 5, wherein,

[0163] the two second connecting portions are generally semi-circular in shape.

[0164] (Item 7)

[0165] A heating and cooking apparatus, wherein,

[0166] it comprises a heater as described in any one of items 1 to 6.

[0167] (Item 8)

[0168] The heating and cooking apparatus according to item 7 further comprises:

[0169] a housing; and

[0170] an inner housing disposed within the housing and disposed with a gap between the inner housing and the housing,

[0171] smoke is drawn from the gap in a horizontal direction.

[0172] (Item 9)

[0173] The heating and cooking apparatus according to item 8, wherein,

[0174] the housing has an exhaust port disposed at a position eccentric to the heater body in a horizontal direction,

[0175] the heater housing is disposed on the side opposite to the exhaust port relative to the heater body.

[0176] (Item 10)

[0177] The heating and cooking apparatus according to item 8, wherein,

[0178] the outer casing has an exhaust port disposed at a position eccentrically located from the heater body in the horizontal direction,

[0179] the heater housing is disposed on the same side as the exhaust port relative to the heater body.

[0180] (Item 11)

[0181] The heating and cooking apparatus according to any one of items 7 to 10, wherein,

[0182] it further comprises a reflective member for reflecting heat,

[0183] the reflective member comprises:

[0184] a first inclined surface that is inclined obliquely downward toward the central axis of the reflective member; and

[0185] a second inclined surface that is inclined obliquely downward away from the central axis,

[0186] the two outer peripheral portions are disposed above the second inclined surface, and the two inner peripheral portions are disposed above the first inclined surface.

[0187] (Item 12)

[0188] The heating and cooking apparatus according to any one of items 7 to 11, wherein,

[0189] it further comprises a cooling device for cooling the heater housing.

[0190] (Item 13)

[0191] A heating and cooking apparatus comprising: Specification 13 / 14 pages 16 CN 122421102 A

[0192] a heater having heater terminals, an electrically heated heater body having a terminal portion electrically connected to the heater terminals, and a heater housing covering a connection portion between the heater terminals and the terminal portion; and

[0193] a cooling device for cooling the heater housing.

[0194] (Item 14)

[0195] The heating and cooking apparatus according to item 12 or 13, wherein,

[0196] the cooling device is a fan.

[0197] (Item 15)

[0198] The heating and cooking apparatus according to Item 14, wherein,

[0199] it further comprises a conduit that guides airflow from the fan toward the heater housing,

[0200] the conduit includes a portion whose inner diameter gradually decreases toward the heater housing.

[0201] (Item 16)

[0202] A heater for heating a cooking apparatus and detachable from a connector including connector terminals, wherein,

[0203] the heater comprises:

[0204] an electrically heated heater body; and

[0205] a heater terminal having a contact portion that can contact the connector terminal and is electrically connected to the heater body, and at least the contact portion is made of pure tungsten, a tungsten alloy, or a silver alloy, preferably made of pure tungsten, a silver-tungsten alloy, or a silver-tin oxide alloy.

[0206] (Item 17)

[0207] A heating and cooking apparatus comprising:

[0208] a heater according to item 16; and

[0209] a connector including connector terminals that can contact the contact portion, and the heater being detachably mounted on the connector. Instruction manual, page 14 / 14, 17 CN 122421102 A, Figure 1; Instruction manual, Figure 1 / 13, page 18 CN 122421102 A, Figure 2; Instruction manual, Figure 2 / 13, page 19 CN 122421102 A, Figure 3; Instruction manual, Figure 3 / 13, page 20 CN 122421102 A, Figure 4; Instruction manual, Figure 4 / 13, page 21 CN 122421102 A, Figure 5; Instruction manual, Figure 5 / 13, page 22 CN 122421102 A, Figure 6A, Figure 6B; Instruction manual, Figure 6 / 13, page 23 CN 122421102 A, Figure 6C, Figure 6D; Instruction manual, Figure 7 / 13, page 24 CN122421102 A Figure 6E Figure 7 Appendix 8 / 13 Page 25 CN 122421102 A Figure 8A Figure 8B Appendix 9 / 13 Page 26 CN 122421102 A Figure 8C Figure 8D Appendix 10 / 13 Page 27 CN 122421102 A Figure 8E Figure 9 Appendix 11 / 13 Page 28 CN 122421102 A Figure 10 Appendix 12 / 13 Page 29 CN 122421102 A Figure 11 Appendix 13 / 13 Page 30 CN 122421102 A Abstract The present invention provides a heater for a heat-cooking apparatus capable of uniformly heating a cooking utensil. The heater (90) comprises an electric heating-type heater main body (91) and a heater case (92). The heater main body (91) comprises two terminal portions (912a, 912b), two outer peripheral portions (913a, 913b), two inner peripheral portions (914a, 914b), and two semicircular first connecting portions (915a, 915b). The first connecting portion (915a) is integrally connected to the outer peripheral portion (913a) and the inner peripheral portion (914a). (915b) is integrally connected to the outer peripheral portion (913b) and the inner peripheral portion (914b). The heatercase (92) covers the two terminal portions (912a, 912b).

Claims

1. A heater for heating cooking equipment, characterized in that, have: The main body of the electric heater; and Heater housing; The heater body includes: The two extensions each have a first end and a second end located on the side opposite to the first end; Two terminal portions are respectively disposed at the first ends of the two extension portions; Two outer peripheral portions, each having a first end and a second end located on the side opposite to the first end, wherein the first end of one of the outer peripheral portions is integrally connected to the second end of one of the extended portions, and the first end of the other outer peripheral portion is integrally connected to the second end of the other extended portion; Two inner peripheral portions are disposed further inward than the two outer peripheral portions, and each has a first end and a second end located on the side opposite to the first end; and The two first connecting portions are generally semi-circular in shape. One of the first connecting portions is integrally connected to the second end of one of the outer peripheral portions and the second end of one of the inner peripheral portions. The other first connecting portion is integrally connected to the second end of the other outer peripheral portion and the second end of the other inner peripheral portion. The heater housing covers at least the two terminal portions.

2. The heater according to claim 1, characterized in that, It also has two heater terminals that are electrically connected to the two terminal parts respectively. The heater housing at least covers the connection portion between the two heater terminals and the two terminal portions.

3. The heater according to claim 1, characterized in that, The distance (D1) between the second end of the inner peripheral portion and the second end of the outer peripheral portion is greater than the distance (D2) between the first end of the inner peripheral portion and the portion of the outer peripheral portion adjacent to it.

4. A heating and cooking device, characterized in that, The heater is provided with any one of claims 1 to 3.

5. The heating and cooking apparatus according to claim 4, characterized in that, It also has: The outer casing; and An inner shell is disposed within the outer shell and is spaced apart from the outer shell by a gap. Smoke is drawn from the gap in a horizontal direction.

6. The heating and cooking apparatus according to claim 5, characterized in that, The outer casing has an exhaust port located at a position eccentrically positioned horizontally from the heater body. The heater housing is positioned on the side opposite to the exhaust port relative to the heater body.

7. The heating and cooking apparatus according to claim 5, characterized in that, The outer casing has an exhaust port located at a position eccentrically positioned horizontally from the heater body. The heater housing is positioned on the same side as the exhaust port relative to the heater body.

8. The heating and cooking apparatus according to claim 4, characterized in that, It also has reflective components for reflecting heat. The reflective component includes: The first inclined surface slopes downwards towards the central axis of the reflective component; and The second inclined surface slopes downwards as it moves away from the central axis. The two outer peripheral portions are disposed above the second inclined surface, and the two inner peripheral portions are disposed above the first inclined surface.

9. A heating and cooking device, characterized in that, have: A heater comprising heater terminals, an electrothermal heater body having a terminal portion electrically connected to the heater terminals, and a heater housing covering the connection portion between the heater terminals and the terminal portion; and A cooling device for cooling the heater housing.

10. The heating and cooking apparatus according to claim 9, characterized in that, The cooling device is a fan.

11. The heating and cooking apparatus according to claim 10, characterized in that, It also includes a duct that guides airflow from the fan to the heater housing. The conduit includes a portion whose inner diameter gradually decreases as it moves toward the heater housing.

12. A heater for heating cooking equipment and detachable from a connector including connector terminals, characterized in that, The heater includes: The main body of the electric heater; and The heater terminal has a contact portion that can contact the connector terminal and is electrically connected to the heater body, and at least the contact portion is made of pure tungsten, a tungsten alloy, or a silver alloy.

13. A heating and cooking device, characterized in that, have: The heater according to claim 12; and The connector includes connector terminals that can contact the contact portion, and the heater is detachably mounted on the connector.

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