CN201852163U

CN201852163U - Induction cooker

Info

Publication number: CN201852163U
Application number: CN2010206116329U
Authority: CN
Inventors: 李健
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-18
Filing date: 2010-11-18
Publication date: 2011-06-01
Anticipated expiration: 2020-11-18

Abstract

The utility model discloses an induction cooker which comprises a base plate and an electromagnetic stirring pan. The base plate comprises an outer casing, a pan base, a pan support, a rear fixed bracket, a front movable bracket, a gear, a supporting wheel, a motor and a speed reducer; the electromagnetic stirring pan comprises an aluminum alloy casing, a copper gear ring, a pan hopper, a heating coil I, a coil jacket I, an isolation frame I, a temperature probe I, coil contacts I, a stainless steel pan and a pan cover; the electromagnetic stirring pan is positioned on the pan base of the base plate; four ring-shaped contacts at the upper part of the pan base respectively and electrically contact with two contacts of the temperature probe I and the two coil contacts I; and when the electromagnetic stirring pan is positioned on the pan base of the base plate and obliquely falls on the pan support, the front movable bracket is forwardly bent in the pan support and is tangent to the groove surface of the pan support, and the gear is meshed with the copper gear ring. The induction cooker has the advantages that the induction cooker can not only be used for automatically cooking, but also automatically rotate for frying dishes, and is convenient and electricity-saving; dishes fried by the induction cooker have high nutrient, and good taste and impression; and people do not need to stay in a kitchen for a long time during cooking.

Description

A kind of electromagnetic oven

Technical field

The utility model relates to a kind of electromagnetic oven, be applicable to cook, culinary art activity such as cooking.

Background technology

At present, the cook stove and accessory of usefulness of family mainly contains gas range and electromagnetic oven.In use there is certain danger in gas range, and coal gas energy consumption height, easy contaminated environment; Therefore, increasing people brings into use electromagnetic oven to cook.But electromagnetic oven also has a defective: when cooking owing to the use electromagnetic oven, be sitting in the kettle temperature height on the electromagnetic oven stone or metal plate for standing a stove on as a precaution against fire, it is fast to cook, so people must ceaselessly move at the pot turning in scoop when using the electromagnetic oven cooking always, can not leave the kitchen; And the people is in a large amount of oil smoke of cooking meeting suction in the kitchen environment for a long time, influences healthy.In addition, use scoop to stir the mode of cooking, careless slightly, dish will be fried and be stuck with paste, and some dish that is difficult for stirring also is easy to be turned over broken; This just greatly reduces nutrition, taste and the impression of vegetable.

Summary of the invention

The purpose of this utility model is: design a kind of electromagnetic oven, this electromagnetic oven can either be cooked automatically, can rotate cooking automatically again, quick, power saving; Its vegetable nutrition of frying out, taste, impression are all good; And people need not rest in the kitchen environment when using this electromagnetic oven to cook for a long time, have saved people's free time, and guaranteeing can be not physically and mentally healthy because of sucking the oil smoke influence.

The purpose of this utility model can realize by following technical proposals:

A kind of electromagnetic oven, form by chassis and electromagnetic agitation pot, it is characterized in that: described chassis is by shell body, the pot seat, the pot holder, back fixed support, preceding travel(l)ing rest, gear, support wheel, motor and decelerator constitute, the pot seat places the centre position on the flat board of shell body rear portion, the pot seat is made of four resilient contacts and four annular contacts that are provided with one heart, four annular contacts connect as a whole by heat-resistant insulation material, the upper end of four resilient contacts is electrically connected with four annular contacts respectively, the lower end of four resilient contacts electrically contacts with the control circuit board that is contained in the flat board of shell body rear portion respectively, the inclined-plane, middle part of shell body is provided with recessed pot holder, on the rear portion flat board of the rear of pot seat shell body, be provided with the back fixed support, bottom at pot holder groove is provided with preceding travel(l)ing rest, gear and support wheel are separately positioned on the upper left-hand and the right positions of pot holder groove, motor and decelerator are installed in the forward position in the shell body, the main shaft of motor is connected by belt or chain with input shaft of speed reducer, the output shaft of decelerator is connected with the gear that is arranged on pot holder groove upper left-hand position, the inclined-plane panel of shell body front portion is provided with some control buttons, and the power line that is electrically connected with control circuit board reaches outside the shell body from the back of shell body rear portion flat board; Described electromagnetic agitation pot is by aluminum alloy casing, the copper gear ring, the pot bucket, the heater coil I, coil overcoat I, the isolating frame I, the temp probe I, coil contact I, stainless-steel pan and pot cover constitute, be with the copper gear ring on the upper periphery face of aluminum alloy casing, the pot bucket is arranged on the bottom of aluminum alloy casing, the heater coil I places and constitutes basket shape calandria between some coil overcoat I and the some isolating frame I, the temp probe I is installed in basket bottom of shape calandria, two coil contact I are positioned at basket bottom of shape calandria, and respectively with the heater coil I just, negative electricity connects, the selenodont groove that the bottom of stainless-steel pan has an ecto-entad to fall in, stainless-steel pan is loaded in the aluminum alloy casing, basket shape calandria places in the space between aluminum alloy casing and the stainless-steel pan, two contacts and two coil contact I of the temp probe I of basket shape calandria bottom are stretched out from the hole of pot bucket bottom, and pot cover is buckled in the upper port place of stainless-steel pan; Described electromagnetic agitation pot is sitting on the pot seat on chassis, and four annular contacts on pot seat top electrically contact with two contacts and two coil contact I of temp probe I respectively; When the pot seat that vertically is sitting in the chassis when the electromagnetic agitation pot was gone up, preceding travel(l)ing rest was with back fixed support fixed support electromagnetic agitation pot; When the pot seat that is sitting in the chassis when the electromagnetic agitation pot was gone up and is poured over the pot holder and goes up, preceding travel(l)ing rest bent forward in the pot holder, and tangent with pot holder groove surface, and gear is meshed with the copper gear ring.

Annular contact described in the utility model is a copper ring, and described resilient contact is a conductive copper sheet.

The angle of pot holder groove surface described in the utility model and horizontal plane is 40 ° or 45 °.

A kind of electromagnetic oven, form by chassis and heat-resisting electromagnetic heating panel, it is characterized in that: described chassis is by shell body, the pot seat, the pot holder, back fixed support, preceding travel(l)ing rest, gear, support wheel, motor and decelerator constitute, the pot seat places the centre position on the flat board of shell body rear portion, the pot seat is made of four resilient contacts and four annular contacts that are provided with one heart, four annular contacts connect as a whole by heat-resistant insulation material, the upper end of four resilient contacts is electrically connected with four annular contacts respectively, the lower end of four resilient contacts electrically contacts with the control circuit board that is contained in the flat board of shell body rear portion respectively, the inclined-plane, middle part of shell body is provided with recessed pot holder, on the rear portion flat board of the rear of pot seat shell body, be provided with the back fixed support, bottom at pot holder groove is provided with preceding travel(l)ing rest, gear and support wheel are separately positioned on the upper left-hand and the right positions of pot holder groove, motor and decelerator are installed in the forward position in the shell body, the main shaft of motor is connected by belt or chain with input shaft of speed reducer, the output shaft of decelerator is connected with the gear that is arranged on pot holder groove upper left-hand position, the inclined-plane panel of shell body front portion is provided with some control buttons, and the power line that is electrically connected with control circuit board reaches outside the shell body from the back of shell body rear portion flat board; Described heat-resisting electromagnetic heating panel is by heat resistant casing, the panel bucket, the heater coil II, coil overcoat II, the isolating frame II, temp probe II and coil contact II constitute, the panel bucket is arranged on the bottom of heat resistant casing, the heater coil II places and constitutes the cheese calandria between some coil overcoat II and the some isolating frame II, the temp probe II is installed in the bottom of cheese calandria, two coil contact II are positioned at the bottom of cheese calandria, and respectively with the heater coil II just, negative electricity connects, and two contacts and two coil contact II of the temp probe II of cheese calandria bottom are stretched out from the hole of panel bucket bottom; Described heat-resisting electromagnetic heating panel is sitting on the pot seat on chassis, and four annular contacts on pot seat top electrically contact with two contacts and two coil contact II of temp probe II respectively.

Heat resistant casing described in the utility model is made by glass ceramics or heat-stable ceramic.

The utility model has the advantages that: when 1) the electromagnetic agitation pot pot seat that is sitting in the chassis is gone up and is poured over the pot holder and goes up, can rotate cooking automatically, quick, power saving by the corresponding control button on the anterior inclined-plane of the low bottom-disc shell body panel; Its vegetable nutrition of frying out, taste, impression are all good, and auto dish frying finishes the back electromagnetic oven and can cut off the power supply automatically; 2) because therefore the selenodont groove that the bottom of stainless-steel pan has an ecto-entad to fall in can make the dish stirring ground in the electromagnetic agitation pot more even; 3) people need not rest in the kitchen environment when using this electromagnetic oven to cook for a long time, have saved people's free time, and guaranteeing can be not physically and mentally healthy because of sucking the oil smoke influence.When 4) the electromagnetic agitation pot pot seat that vertically is sitting in the chassis is gone up, press the corresponding control button on inclined-plane, the low bottom-disc shell body front portion panel, can heat up water easily, boil soup, boil culinary art activity such as face; When 5) the heat-resisting electromagnetic heating panel pot seat that is sitting in the chassis is gone up, pot commonly used in the life can be placed on the electromagnetic heating panel, press the corresponding control button on inclined-plane, the low bottom-disc shell body front portion panel this moment, can cook easily and wait other culinary art activity; 6) simple, the superior performance of this electromagnetic oven structure, diverse in function, convenient and swift are a kind of desirable electromagnetic ovens.

Description of drawings

Fig. 1 is the overall structure schematic diagram of electromagnetic agitation pot;

Fig. 2 is a sectional structure schematic diagram of taking electromagnetic agitation pot behind the pot cover;

Fig. 3 is a decomposition texture schematic diagram of taking electromagnetic agitation pot behind the pot cover;

Fig. 4 is that perspective view is looked on the left side that the inclined to one side lid in left side is opened rear chassis;

Fig. 5 is that perspective view is looked on the left side that the electromagnetic agitation pot vertically is sitting on the chassis;

Fig. 6 is that the electromagnetic agitation pot is sitting on the chassis and perspective view is looked on the left side that is poured in the pot holder;

Fig. 7 is the overall structure schematic diagram of heat-resisting electromagnetic heating panel;

Fig. 8 is the sectional structure schematic diagram of heat-resisting electromagnetic heating panel;

Fig. 9 is that perspective view is looked on the left side that heat-resisting electromagnetic heating panel is sitting on the chassis.

The specific embodiment

As Fig. 1---shown in 6, a kind of electromagnetic oven, form by chassis and electromagnetic agitation pot, it is characterized in that: described chassis is by shell body 20, pot seat 11, pot holder 21, back fixed support 15, preceding travel(l)ing rest 14, gear 12, support wheel 13, motor 16 and decelerator 17 constitute, pot seat 11 centre positions that place on the shell body 20 rear portion flat boards, pot seat 11 is made of four resilient contacts and four annular contacts that are provided with one heart, four annular contacts connect as a whole by heat-resistant insulation material, the upper end of four resilient contacts is electrically connected with four annular contacts respectively, the lower end of four resilient contacts electrically contacts with the control circuit board that is contained in the shell body 20 rear portion flat boards respectively, the inclined-plane, middle part of shell body 20 is provided with recessed pot holder 21, on the rear portion flat board of the rear of pot seat 11 shell body 20, be provided with back fixed support 15, travel(l)ing rest 14 before pot asks the bottom of 21 grooves to be provided with, gear 12 and support wheel 13 are separately positioned on the upper left-hand and the right positions of pot holder 21 grooves, motor 16 and decelerator 17 are installed in the forward position in the shell body 20, the main shaft of motor 16 is connected by belt or chain with the power shaft of decelerator 17, the output shaft of decelerator 17 is connected with the gear 12 that is arranged on pot holder 21 groove upper left-hand positions, the inclined-plane panel of shell body 20 front portions is provided with some control buttons 22, and the power line that is electrically connected with control circuit board reaches outside the shell body 20 from the back of shell body 20 rear portion flat boards; Described electromagnetic agitation pot is by aluminum alloy casing 1, copper gear ring 2, pot bucket 3, heater coil I 5, coil overcoat I 4, isolating frame I 6, the temp probe I, coil contact I 7, stainless-steel pan 9 and pot cover 19 constitute, be with copper gear ring 2 on the upper periphery face of aluminum alloy casing 1, pot bucket 3 is arranged on the bottom of aluminum alloy casing 1, heater coil I 5 places and constitutes basket shape calandria between some coil overcoat I 4 and the some isolating frame I 6, the temp probe I is installed in basket bottom of shape calandria, two coil contact I 7 are positioned at basket bottom of shape calandria, and respectively with heater coil I 5 just, negative electricity connects, the selenodont groove 10 that the bottom of stainless-steel pan 9 has an ecto-entad to fall in, stainless-steel pan 9 is loaded in the aluminum alloy casing 1, basket shape calandria places in the space between aluminum alloy casing 1 and the stainless-steel pan 9, two contacts 8 of the temp probe I of basket shape calandria bottom and two coil contact I 7 are stretched out from pot struggles against the hole of 3 bottoms, and pot cover 19 is buckled in the upper port place of stainless-steel pan 9; Described electromagnetic agitation pot is sitting on the pot seat 11 on chassis, and four annular contacts on pot seat 11 tops electrically contact with two contacts 8 and two coil contact I 7 of temp probe I respectively; When the electromagnetic agitation pot vertically was sitting on the pot seat 11 on chassis, preceding travel(l)ing rest 14 was with back fixed support 15 fixed support electromagnetic agitation pots; When the electromagnetic agitation pot was sitting on the pot seat 11 on chassis and is poured in the pot holder 21, preceding travel(l)ing rest 14 bent forward in pot holder 21, and asks 21 groove surfaces tangent with pot, and gear 12 is meshed with copper gear ring 2.Described annular contact is a copper ring, and described resilient contact is a conductive copper sheet.The angle of described pot holder 21 groove surfaces and horizontal plane is 40 ° or 45 °.

As Fig. 7---shown in 9, a kind of electromagnetic oven, form by chassis and heat-resisting electromagnetic heating panel, it is characterized in that: described chassis is by shell body 20, pot seat 11, pot holder 21, back fixed support 15, preceding travel(l)ing rest 14, gear 12, support wheel 13, motor 16 and decelerator 17 constitute, pot seat 11 centre positions that place on the shell body 20 rear portion flat boards, pot seat 11 is made of four resilient contacts and four annular contacts that are provided with one heart, four annular contacts connect as a whole by heat-resistant insulation material, the upper end of four resilient contacts is electrically connected with four annular contacts respectively, the lower end of four resilient contacts electrically contacts with the control circuit board that is contained in the shell body 20 rear portion flat boards respectively, the inclined-plane, middle part of shell body 20 is provided with recessed pot holder 21, on the rear portion flat board of the rear of pot seat 11 shell body 20, be provided with back fixed support 15, travel(l)ing rest 14 before pot asks the bottom of 21 grooves to be provided with, gear 12 and support wheel 13 are separately positioned on the upper left-hand and the right positions of pot holder 21 grooves, motor 16 and decelerator 17 are installed in the forward position in the shell body 20, the main shaft of motor 16 is connected by belt or chain with the power shaft of decelerator 17, the output shaft of decelerator 17 is connected with the gear 12 that is arranged on pot holder 21 groove upper left-hand positions, the inclined-plane panel of shell body 20 front portions is provided with some control buttons 22, and the power line that is electrically connected with control circuit board reaches outside the shell body 20 from the back of shell body 20 rear portion flat boards; Described heat-resisting electromagnetic heating panel is by heat resistant casing 18, panel bucket 23, heater coil II 25, coil overcoat II 24, isolating frame II 26, temp probe II and coil contact II 27 constitute, panel bucket 23 is arranged on the bottom of heat resistant casing 18, heater coil II 25 places and constitutes the cheese calandria between some coil overcoat II 24 and the some isolating frame II 26, the temp probe II is installed in the bottom of cheese calandria, two coil contact II 27 are positioned at the bottom of cheese calandria, and respectively with heater coil II 25 just, negative electricity connects, and two contacts 28 and two coil contact II 27 of the temp probe II of cheese calandria bottom are stretched out from the hole of panel bucket 23 bottoms; Described heat-resisting electromagnetic heating panel is sitting on the pot seat 11 on chassis, and four annular contacts on pot seat 11 tops electrically contact with two contacts 28 and two coil contact II 27 of temp probe II respectively.Described annular contact is a copper ring, and described resilient contact is a conductive copper sheet.Described heat resistant casing 18 is made by glass ceramics or heat-stable ceramic.

This electromagnetic oven in use, cooking if desired then is sitting in the electromagnetic agitation pot on the pot seat 11 on chassis and is poured in the pot holder 21, as shown in Figure 6, travel(l)ing rest 14 bends forward in pot holder 21 before this moment, and asks 21 groove surfaces tangent with pot, and gear 12 is meshed with copper gear ring 2; Because the resilient contact that pot seat is 11 ones and the control circuit board of chassis shell body 20 inside are abutted against and touch friction and be connected, therefore pot 11 can be done 360 ° of rotations, and can fall with 40 ° in electromagnetic agitation pot or 45 ° forward.During cooking, condiment such as dish and oil, salt are put into the stainless-steel pan 9 of electromagnetic agitation pot, buckle pot cover 19; Press the corresponding control button 22 on the low bottom-disc shell body 20 anterior inclined-plane panels then, and after configuring timing, the motor 16 of chassis shell body 20 inside starts, the decelerator 17 that drives shell body 20 inside rotates, and the gear 12 that decelerator 17 drives pot holder 21 groove upper left-hand positions rotates, and gear 12 drives the rotation of electromagnetic agitation pot, get final product auto dish frying, after arriving setting-up time, electromagnetic oven cuts off the power supply automatically, and cooking finishes.Heat up water, boil soup if desired, boil culinary art activity such as face, then the electromagnetic agitation pot vertically is sitting on the pot seat 11 on chassis, as shown in Figure 5, travel(l)ing rest 14 is with back fixed support 15 fixed support electromagnetic agitation pots before this moment; Operate the corresponding control button 22 on the chassis shell body 20 anterior inclined-plane panels then, can heat up water, boil soup, boil culinary art activities such as face.Cook if desired and wait other culinary art activity, then heat-resisting electromagnetic heating panel is sitting on the pot seat 11 on chassis, as shown in Figure 9, to be fit to this culinary art activity pot again and be placed on the heat-resisting electromagnetic heating panel this moment, operate the corresponding control button 22 on the chassis shell body 20 anterior inclined-plane panels then, can cook and wait other culinary art activity.

Claims

1. electromagnetic oven, form by chassis and electromagnetic agitation pot, it is characterized in that: described chassis is by shell body (20), pot seat (11), pot holder (21), back fixed support (15), preceding travel(l)ing rest (14), gear (12), support wheel (13), motor (16) and decelerator (17) constitute, pot seat (11) places the centre position on the flat board of shell body (20) rear portion, pot seat (11) is made of four resilient contacts and four annular contacts that are provided with one heart, four annular contacts connect as a whole by heat-resistant insulation material, the upper end of four resilient contacts is electrically connected with four annular contacts respectively, the lower end of four resilient contacts electrically contacts with the control circuit board that is contained in the flat board of shell body (20) rear portion respectively, the inclined-plane, middle part of shell body (20) is provided with recessed pot holder (21), on the rear portion flat board of the rear shell body (20) of pot seat (11), be provided with back fixed support (15), bottom at pot holder (21) groove is provided with preceding travel(l)ing rest (14), gear (12) and support wheel (13) are separately positioned on the upper left-hand and the right positions of pot holder (21) groove, motor (16) and decelerator (17) are installed in the forward position in the shell body (20), the main shaft of motor (16) is connected by belt or chain with the power shaft of decelerator (17), the output shaft of decelerator (17) is connected with the gear (12) that is arranged on pot holder (21) groove upper left-hand position, the anterior inclined-plane panel of shell body (20) is provided with some control buttons (22), and the power line that is electrically connected with control circuit board reaches outside the shell body (20) from the back of shell body (20) rear portion flat board; Described electromagnetic agitation pot is by aluminum alloy casing (1), copper gear ring (2), pot bucket (3), heater coil I (5), coil overcoat I (4), isolating frame I (6), the temp probe I, coil contact I (7), stainless-steel pan (9) and pot cover (19) constitute, be with copper gear ring (2) on the upper periphery face of aluminum alloy casing (1), pot bucket (3) is arranged on the bottom of aluminum alloy casing (1), heater coil I (5) places and constitutes basket shape calandria between some coil overcoat I (4) and the some isolating frame I (6), the temp probe I is installed in basket bottom of shape calandria, two coil contact I (7) are positioned at basket bottom of shape calandria, and respectively with heater coil I (5) just, negative electricity connects, the selenodont groove (10) that the bottom of stainless-steel pan (9) has an ecto-entad to fall in, stainless-steel pan (9) is loaded in the aluminum alloy casing (1), basket shape calandria places in the space between aluminum alloy casing (1) and the stainless-steel pan (9), two contacts (8) and two coil contact I (7) of the temp probe I of basket shape calandria bottom are stretched out from the hole of pot bucket (3) bottom, and pot cover (19) is buckled in the upper port place of stainless-steel pan (9); Described electromagnetic agitation pot is sitting on the pot seat (11) on chassis, and four annular contacts on pot seat (11) top electrically contact with two contacts (8) and two coil contact I (7) of temp probe I respectively; When the pot seat (11) that vertically is sitting in the chassis when the electromagnetic agitation pot was gone up, preceding travel(l)ing rest (14) was with back fixed support (15) fixed support electromagnetic agitation pot; When the pot seat (11) that is sitting in the chassis when the electromagnetic agitation pot was gone up and is poured over pot holder (21) and goes up, preceding travel(l)ing rest (14) bent forward in pot holder (21), and tangent with pot holder (21) groove surface, and gear (12) is meshed with copper gear ring (2).

2. a kind of electromagnetic oven according to claim 1 is characterized in that: described annular contact is a copper ring, and described resilient contact is a conductive copper sheet.

3. a kind of electromagnetic oven according to claim 1 is characterized in that: the angle of described pot holder (21) groove surface and horizontal plane is 40 ° or 45 °.

4. electromagnetic oven, form by chassis and heat-resisting electromagnetic heating panel, it is characterized in that: described chassis is by shell body (20), pot seat (11), pot holder (21), back fixed support (15), preceding travel(l)ing rest (14), gear (12), support wheel (13), motor (16) and decelerator (17) constitute, pot seat (11) places the centre position on the flat board of shell body (20) rear portion, pot seat (11) is made of four resilient contacts and four annular contacts that are provided with one heart, four annular contacts connect as a whole by heat-resistant insulation material, the upper end of four resilient contacts is electrically connected with four annular contacts respectively, the lower end of four resilient contacts electrically contacts with the control circuit board that is contained in the flat board of shell body (20) rear portion respectively, the inclined-plane, middle part of shell body (20) is provided with recessed pot holder (21), on the rear portion flat board of the rear shell body (20) of pot seat (11), be provided with back fixed support (15), bottom at pot holder (21) groove is provided with preceding travel(l)ing rest (14), gear (12) and support wheel (13) are separately positioned on the upper left-hand and the right positions of pot holder (21) groove, motor (16) and decelerator (17) are installed in the forward position in the shell body (20), the main shaft of motor (16) is connected by belt or chain with the power shaft of decelerator (17), the output shaft of decelerator (17) is connected with the gear (12) that is arranged on pot holder (21) groove upper left-hand position, the anterior inclined-plane panel of shell body (20) is provided with some control buttons (22), and the power line that is electrically connected with control circuit board reaches outside the shell body (20) from the back of shell body (20) rear portion flat board; Described heat-resisting electromagnetic heating panel is by heat resistant casing (18), panel bucket (23), heater coil II (25), coil overcoat II (24), isolating frame II (26), temp probe II and coil contact II (27) constitute, panel bucket (23) is arranged on the bottom of heat resistant casing (18), heater coil II (25) places and constitutes the cheese calandria between some coil overcoat II (24) and the some isolating frame II (26), the temp probe II is installed in the bottom of cheese calandria, two coil contact II (27) are positioned at the bottom of cheese calandria, and respectively with heater coil II (25) just, negative electricity connects, and two contacts (28) and two coil contact II (27) of the temp probe II of cheese calandria bottom are stretched out from the hole of panel bucket (23) bottom; Described heat-resisting electromagnetic heating panel is sitting on the pot seat (11) on chassis, and four annular contacts on pot seat (11) top electrically contact with two contacts (28) and two coil contact II (27) of temp probe II respectively.

5. a kind of electromagnetic oven according to claim 4 is characterized in that: described annular contact is a copper ring, and described resilient contact is a conductive copper sheet.

6. a kind of electromagnetic oven according to claim 4 is characterized in that: described heat resistant casing (18) is made by glass ceramics or heat-stable ceramic.