An anti-electric shock safety device for electric stove and its use method

Abstract

The present invention relates to the technical field of electric stoves, and specifically to an anti-electric shock safety device for electric stoves and a method of using the device, comprising a furnace body, a movement, a support frame, a resistive electric heating plate, an isolation transformer and a controller, wherein the movement is placed inside the furnace body, the movement is a drawer-type structure, the movement and the furnace body are detachable, the support frame is placed on the top of the furnace body, the isolation transformer is a split structure, the isolation transformer comprises a transformer primary coil and a transformer secondary coil, and the transformer primary coil and the transformer secondary coil are symmetrically placed. The device solves the problem that most electric heating wires of electric stoves currently on the market are exposed to the outside, there is a risk of electric shock, and it brings huge safety hazards to users. Due to the high internal temperature of the electric stove, the probability of aging and damage of components is high, the possibility of requiring maintenance is relatively high, the product structure is relatively complex, and convenient maintenance cannot be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of electric heating cookers, and in particular to an anti-electric shock safety device for an electric heating cooker and a use method thereof. Background Art

[0002] The Chinese invention with the publication number CN1825001A discloses an electric stove. The electric stove comprises: a circuit board, which is provided with at least one semiconductor chip and is used to control the current applied to the induction heating device; a heat sink, which is used to absorb the heat of the semiconductor chip and discharge the heat to the outside; and at least one heat conduction clip, which is used to fix the semiconductor chip on the heat sink to transfer the heat of the semiconductor chip to the heat sink. The electric stove according to the present invention can effectively dissipate the heat of the semiconductor chip arranged on the electric stove.

[0003] The Chinese invention with publication number CN109237550A discloses an embedded electric stove, which includes a face cover, a bottom shell and an electric stove head. The electric stove head includes an electric heating device, a panel, an inner box, a heat dissipation fan and a diverter ring. A gap is provided between the electric heating device and an opening on the inner box. The diverter ring covers the gap in the air duct. The invention also includes a support seat. A flange is provided at the bottom of the support seat. The flange cooperates with an opening on the stove to support the electric stove. An air intake gap is provided between the face cover and the stove. A plurality of air intake holes are provided on the support seat. The air intake holes connect the cavity of the bottom shell with the outside. Cold air enters the bottom shell from the air intake holes, is sucked into the inner box by the heat dissipation fan to cool the electric heating device, and hot air flows from the gap in the air duct to the diverter ring and is discharged from the exhaust holes on the diverter ring. The hot air discharged from the diverter ring forms an air curtain. Due to the use of such a heat dissipation air duct structure, the electric stove has a long service life and can be designed as a high-power stove. At the same time, the heat dissipation air discharged from the diverter ring forms an air curtain to prevent the spread of oil smoke.

[0004] However, the above patent still has the following problems:

[0005] (1) The electric stoves on the market are roughly divided into radiant heating stoves covered with microcrystalline ceramic glass and dry-burning electric heating tube type stoves. Most of the electric heating wires are exposed. Except for radiant heating stoves covered with microcrystalline ceramic glass, other products have the risk of electric shock, which brings huge safety hazards to users.

[0006] (2) As the internal temperature of electric stoves is relatively high, the probability of aging and damage of components is relatively high, and the possibility of requiring maintenance is relatively high. The existing product structure is relatively complex and cannot be easily repaired. Summary of the invention

[0007] The present invention aims at the above problems existing in the prior art and provides an electric shock prevention safety device for an electric heating cooker.

[0008] The basic scheme of the present invention is:

[0009] An anti-electric shock safety device for an electric stove comprises a stove body, a movement, a support frame, a resistive electric heating plate, an isolation transformer and a controller, wherein the movement is placed inside the stove body, the movement is a drawer-type structure, the movement is detachably and slidably connected to the inside of the stove body, the support frame is placed on the top of the stove body, the isolation transformer is a split structure, the isolation transformer comprises a transformer primary coil and a transformer secondary coil, the transformer primary coil and the transformer secondary coil are symmetrically placed, the transformer primary coil is connected to the controller, the transformer secondary coil is connected to the resistive electric heating plate, the transformer secondary coil and the resistive electric heating plate are mounted on the stove body, and the transformer primary coil and the controller are integrated in the movement.

[0010] Preferably, the movement includes a drawer frame, a plurality of spring plate assemblies, a plurality of heat dissipation assemblies, a plurality of slide assemblies and an insulating partition, the plurality of spring plate assemblies are symmetrically arranged on both sides of the inner wall of the drawer frame, the plurality of slide assemblies are symmetrically arranged on both sides of the outer wall of the drawer frame, the heat dissipation assembly is arranged in the middle of the drawer frame, the drawer frame includes a plurality of heat dissipation holes evenly spaced, the spring plate assembly includes a fixing rod, a connecting block, a hinge rod, a hinge seat and a clamping element, the fixing rod is fixed to the inner wall of the drawer frame, the hinge seat is arranged at the rear end of the fixing rod, the rear end of the hinge rod is hinged to the hinge seat, the front end of the hinge rod is connected to the connecting block, the clamping element is arranged at the rear end of the hinge rod, the clamping element clamps the hinge rod and the hinge seat, a spring is arranged in the hinge seat, when the unclamped element does not clamp the hinge rod, the hinge seat pulls the hinge rod to a vertical state, and the connecting block is detachably connected to the insulating partition.

[0011] Preferably, the slide assembly includes a fixed rail, a slide rail, a plurality of pulleys, a side wheel frame and side wheels, the fixed rail is fixed on the furnace body, the plurality of pulleys are arranged at intervals at the bottom of the slide rail, the plurality of pulleys are rotatably connected to the bottom of the slide rail, the side wheel frame is placed at the rear end of the slide rail, and the side wheels are rotatably connected to the side wheel frame.

[0012] Preferably, the clamping element includes a wedge block, a push block, a clamping rod and a clamping spring, the wedge block is placed at the front end of the inner wall of the fixed track, the push block is slidably clamped with the hinge rod and the hinge seat, the rear end of the push block abuts against the front end of the clamping rod, the clamping rod is placed inside the hinge rod, the clamping rod is placed inside the hinge rod, the front end of the clamping rod is slidably clamped with the hinge rod and the hinge seat, one end of the clamping spring abuts against the rear end of the clamping rod, and the other end of the clamping spring abuts against the inner wall of the hinge rod. When the side wheel moves to the front end of the fixed track, the movement is pulled away from the furnace body, the side wheel abuts against the wedge block, and the side wheel slides in the direction away from the wedge block and abuts against the push block.

[0013] Preferably, the heat dissipation assembly comprises a protective shell with a plurality of heat dissipation through holes on the outside and a heat dissipation fan, and the heat dissipation fan is placed inside the protective shell.

[0014] Preferably, the isolation transformer further includes a plurality of induction coils, and the plurality of induction coils are wound around the isolation transformer.

[0015] Preferably, the resistive electric heating plate comprises an electric heating plate bracket, an electric heating plate, an electric heating plate interface and connecting wires, the electric heating plate bracket is a cross structure, the electric heating plate is installed on the electric heating plate bracket, the electric heating plate is a disc-shaped structure formed by a plurality of electric heating tubes, the electric heating plate interface is placed at the outlet end of the electric heating plate, and the electric heating plate interface is connected to the secondary coil of the transformer via connecting wires.

[0016] Preferably, the high-frequency alternating current output by the controller is 20KHz-30KHz.

[0017] Preferably, the furnace body comprises a body, a plurality of legs and a mounting groove, the body is provided with a mounting groove, the core is detachably and slidably connected to the mounting groove, and the plurality of legs are distributed at four corners at the bottom of the body.

[0018] The invention also discloses a method for using the electric shock prevention safety device of the electric heating cooker:

[0019] S1. Current conversion: Connect the controller to the power supply, and the controller changes the current into a high-frequency alternating current output of 20KHz-30KHz;

[0020] S2. Electromagnetic induction: High-frequency alternating current is transmitted to the primary coil of the transformer, which generates an alternating magnetic field. The primary coil of the transformer placed on top of the primary coil of the transformer is converted into alternating current after being subjected to the alternating magnetic field.

[0021] S3. Electric heating: Alternating current is transmitted to the resistive electric heating plate through the connecting wire, and the Joule heating effect converts electrical energy into thermal energy, thereby generating a large amount of heat for cooking food;

[0022] S4. Pull out the movement: pull the drawer frame to slide and pull it out until the drawer frame is pulled out of the furnace body. At this time, the side wheels abut against the wedge blocks. During the movement of the side wheels, the side wheels slide away from the wedge blocks and abut against the push blocks. The push blocks move toward the inside of the drawer frame. The push blocks push the front end of the card connecting rod to make the card connecting rod move away from the push block until it is separated from the hinge seat. The hinge rod pops up and is in a vertical state, driving the insulating partition to open for easy internal maintenance.

[0023] The working principle and advantages of the present invention are:

[0024] The invention comprises a furnace body, a core, a support frame, a resistive electric heating plate, an isolation transformer and a controller. The furnace body provides an installation position for the safety device. The outer shell of the drawer-type core is made of insulating material. The main power line directly enters the core, and the live parts are all wrapped inside the core. The resistive electric heating plate is connected to the controller through a split isolation transformer, and the resistive electric heating plate is connected to the secondary coil of the transformer. The secondary coil of the transformer receives the alternating magnetic field generated by the primary coil, and converts the alternating magnetic field into alternating current, ensuring that there is no loop between the circuit on the secondary coil of the transformer and the ground, thereby avoiding the risk of electric shock. The internal temperature of the electric stove is relatively high, the probability of aging and damage of components is relatively high, and maintenance is relatively frequent. The core that is detachably connected to the furnace body is provided, which is convenient for rapid maintenance and rapid replacement when a fault occurs. The heat dissipation component dissipates heat and cools the inside of the core when the electric stove is working. The slideway component facilitates the rapid withdrawal of the core. After the core is withdrawn from the furnace body, the spring plate component drives the insulating partition to open, which is convenient for maintenance work.

[0025] The multiple pulleys on the slideway assembly improve the smoothness of the movement to be pulled out of the furnace body, and the side wheel auxiliary slide rail is slidably connected to the slideway assembly. The clamping element clamps the hinge rod and the hinge seat, and the drawer frame is pulled out to slide until the drawer frame is pulled out of the furnace body. At this time, the side wheel abuts against the wedge block. During the movement of the side wheel, the side wheel slides away from the wedge block and abuts against the push block. The push block moves into the drawer frame. The push block pushes the front end of the clamping rod to make the clamping rod move away from the push block until it is separated from the hinge seat. The hinge rod pops up and is in a vertical state, driving the insulating partition to open for easy internal maintenance.

[0026] The controller changes the current into a high-frequency alternating current output of 20KHz-30KHz. After conversion by the isolation transformer, the alternating current is transmitted to the resistive heating plate through the connecting wires. The Joule heating effect converts electrical energy into thermal energy, thereby generating a large amount of heat for cooking food. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an anti-electric shock safety device of an electric heating cooker according to the present invention;

[0028] Figure 2 It is a structural schematic diagram of a resistive electric heating plate in an anti-electric shock safety device of an electric heating cooker according to the present invention;

[0029] Figure 3 It is a schematic diagram of the installation of a movement in an anti-electric shock safety device of an electric heating cooker according to the present invention (inserted state);

[0030] Figure 4 This is a schematic diagram of the installation of a movement in an anti-electric shock safety device for an electric stove according to the present invention (in a pulled-out state);

[0031] Figure 5It is a schematic diagram of the internal structure of a movement in an anti-electric shock safety device of an electric heating cooker according to the present invention;

[0032] Figure 6 It is a schematic diagram of the external structure of a movement in an anti-electric shock safety device for an electric heating cooker according to the present invention;

[0033] Figure 7 It is a structural schematic diagram of a slideway assembly in an anti-electric shock safety device of an electric heating cooker according to the present invention;

[0034] Figure 8 It is a schematic diagram of the working principle of a clamping element in an anti-electric shock safety device of an electric heating cooker according to the present invention;

[0035] The reference numerals involved in the accompanying drawings are:

[0036] Furnace body 1; body 101; support leg 102; mounting slot 103;

[0037] Movement 2; drawer frame 201; spring plate assembly 202; heat dissipation assembly 203; slideway assembly 204; insulating partition 205; fixing rod 206; connecting block 207; hinge rod 208; hinge seat 209; heat dissipation hole 210; fixing rail 211; slide rail 212; pulley 213; side wheel frame 214; side wheel 215; wedge block 216; push block 217; clamping rod 218; clamping spring 219;

[0038] Support frame 3;

[0039] Resistive electric heating plate 4; electric heating plate bracket 401; electric heating plate 402; electric heating plate interface 403; connecting wire 404;

[0040] Isolation transformer 5; transformer primary coil 501; transformer secondary coil 502; induction coil 503. DETAILED DESCRIPTION

[0041] The following is a further detailed description through specific implementation methods:

[0042] Embodiment 1:

[0043] like Figure 1-8As shown, an electric shock prevention safety device for an electric stove includes a furnace body 1, a movement 2, a support frame 3, a resistive electric heating plate 4, an isolation transformer 5 and a controller. The movement 2 is placed inside the furnace body 1, and the movement 2 is a drawer-type structure. The movement 2 is detachably and slidably connected to the inside of the furnace body 1. The support frame 3 is placed on the top of the furnace body 1. The isolation transformer 5 is a split structure. The isolation transformer 5 includes a transformer primary coil 501 and a transformer secondary coil 502. The transformer primary coil 501 and the transformer secondary coil 502 are symmetrically placed. The transformer primary coil 501 is connected to the controller, the transformer secondary coil 502 is connected to the resistive electric heating plate 4, the transformer secondary coil 502 and the resistive electric heating plate 4 are installed in the furnace body 1, and the transformer primary coil 501 and the controller are integrated in the movement 2.

[0044] The present invention includes a furnace body 1, a movement 2, a support frame 3, a resistive electric heating plate 4, an isolation transformer 5 and a controller. The furnace body 1 provides an installation position for the safety device. The outer shell of the drawer-type movement 2 is made of insulating material. The main power cord directly enters the movement 2, and the live parts are all wrapped inside the movement 2. The resistive electric heating plate 4 is connected to the controller through a split isolation transformer 5. The resistive electric heating plate 4 is connected to the secondary coil of the transformer, and receives the current transmitted by the controller in the primary coil through electromagnetic induction, ensuring that there is no loop between the circuit on the secondary coil of the transformer and the ground, thereby avoiding the risk of electric shock.

[0045] The movement 2 includes a drawer frame 201, multiple spring plate assemblies 202, multiple heat dissipation assemblies 203, multiple slideway assemblies 204 and an insulating partition 205. The multiple spring plate assemblies 202 are symmetrically arranged on both sides of the inner wall of the drawer frame 201, and the multiple slideway assemblies 204 are symmetrically arranged on both sides of the outer wall of the drawer frame 201. The heat dissipation assembly 203 is placed in the middle of the drawer frame 201. The drawer frame 201 includes multiple heat dissipation holes 210 evenly spaced. The spring plate assembly 202 includes a fixing rod 206, a connecting block 207, a hinge rod 208, a hinge seat 209 and a clamping element. The fixed rod 206 is fixed on the inner wall of the drawer frame 201, the hinge seat 209 is placed at the rear end of the fixed rod 206, the rear end of the hinge rod 208 is hinged to the hinge seat 209, the front end of the hinge rod 208 is connected to the connecting block 207, and the clamping element is placed at the rear end of the hinge rod 208. The clamping element clamps the hinge rod 208 and the hinge seat 209. A spring is provided in the hinge seat 209. When the clamping element does not clamp the hinge rod 208, the hinge seat 209 pulls the hinge rod 208 to a vertical state, and the connecting block 207 is detachably connected to the insulating partition 205.

[0046] The internal temperature of the electric stove is relatively high, and the probability of aging and damage of components is relatively high, and maintenance is relatively frequent. A movement 2 that is detachably connected to the furnace body 1 is provided to facilitate rapid maintenance and replacement when a fault occurs. The heat dissipation component 203 dissipates heat and cools the inside of the movement 2 when the electric stove is working. The slide assembly 204 facilitates the rapid withdrawal of the movement 2. After the movement 2 is withdrawn from the furnace body 1, the spring plate assembly 202 drives the insulating partition 205 to open, which is convenient for maintenance work.

[0047] The slideway assembly 204 includes a fixed rail 211, a slide rail 212, multiple pulleys 213, a side wheel frame 214 and a side wheel 215. The fixed rail 211 is fixed on the furnace body 1. The multiple pulleys 213 are arranged at intervals at the bottom of the slide rail 212. The multiple pulleys 213 are rotatably connected to the bottom of the slide rail 212. The side wheel frame 214 is placed at the rear end of the slide rail 212, and the side wheel 215 is rotatably connected to the side wheel frame 214.

[0048] The plurality of pulleys 213 on the slideway assembly 204 improves the smoothness of the movement 2 being drawn out of the furnace body 1 , and the side wheels 215 assist the slide rail 212 in sliding connection with the slideway assembly 204 .

[0049] Embodiment 2:

[0050] like Figure 1-8 As shown, an electric shock prevention safety device for an electric stove includes a furnace body 1, a movement 2, a support frame 3, a resistive electric heating plate 4, an isolation transformer 5 and a controller. The movement 2 is placed inside the furnace body 1, and the movement 2 is a drawer-type structure. The movement 2 is detachably and slidably connected to the inside of the furnace body 1. The support frame 3 is placed on the top of the furnace body 1. The isolation transformer 5 is a split structure. The isolation transformer 5 includes a transformer primary coil 501 and a transformer secondary coil 502. The transformer primary coil 501 and the transformer secondary coil 502 are symmetrically placed. The transformer primary coil 501 is connected to the controller, the transformer secondary coil 502 is connected to the resistive electric heating plate 4, the transformer secondary coil 502 and the resistive electric heating plate 4 are installed in the furnace body 1, and the transformer primary coil 501 and the controller are integrated in the movement 2.

[0051] The present invention includes a furnace body 1, a movement 2, a support frame 3, a resistive electric heating plate 4, an isolation transformer 5 and a controller. The furnace body 1 provides an installation position for the safety device. The outer shell of the drawer-type movement 2 is made of insulating material. The main power cord directly enters the movement 2, and the live parts are all wrapped inside the movement 2. The resistive electric heating plate 4 is connected to the controller through a split isolation transformer 5. The resistive electric heating plate 4 is connected to the secondary coil of the transformer, and receives the current transmitted by the controller in the primary coil through electromagnetic induction, ensuring that there is no loop between the circuit on the secondary coil of the transformer and the ground, thereby avoiding the risk of electric shock.

[0052] The movement 2 includes a drawer frame 201, multiple spring plate assemblies 202, multiple heat dissipation assemblies 203, multiple slideway assemblies 204 and an insulating partition 205. The multiple spring plate assemblies 202 are symmetrically arranged on both sides of the inner wall of the drawer frame 201, and the multiple slideway assemblies 204 are symmetrically arranged on both sides of the outer wall of the drawer frame 201. The heat dissipation assembly 203 is placed in the middle of the drawer frame 201. The drawer frame 201 includes multiple heat dissipation holes 210 evenly spaced. The spring plate assembly 202 includes a fixing rod 206, a connecting block 207, a hinge rod 208, a hinge seat 209 and a clamping element. The fixed rod 206 is fixed on the inner wall of the drawer frame 201, the hinge seat 209 is placed at the rear end of the fixed rod 206, the rear end of the hinge rod 208 is hinged to the hinge seat 209, the front end of the hinge rod 208 is connected to the connecting block 207, and the clamping element is placed at the rear end of the hinge rod 208. The clamping element clamps the hinge rod 208 and the hinge seat 209. A spring is provided in the hinge seat 209. When the clamping element does not clamp the hinge rod 208, the hinge seat 209 pulls the hinge rod 208 to a vertical state, and the connecting block 207 is detachably connected to the insulating partition 205.

[0053] The internal temperature of the electric stove is relatively high, and the probability of aging and damage of components is relatively high, and maintenance is relatively frequent. A movement 2 that is detachably connected to the furnace body 1 is provided to facilitate rapid maintenance and replacement when a fault occurs. The heat dissipation component 203 dissipates heat and cools the inside of the movement 2 when the electric stove is working. The slide assembly 204 facilitates the rapid withdrawal of the movement 2. After the movement 2 is withdrawn from the furnace body 1, the spring plate assembly 202 drives the insulating partition 205 to open, which is convenient for maintenance work.

[0054] The slideway assembly 204 includes a fixed rail 211, a slide rail 212, multiple pulleys 213, a side wheel frame 214 and a side wheel 215. The fixed rail 211 is fixed on the furnace body 1. The multiple pulleys 213 are arranged at intervals at the bottom of the slide rail 212. The multiple pulleys 213 are rotatably connected to the bottom of the slide rail 212. The side wheel frame 214 is placed at the rear end of the slide rail 212, and the side wheel 215 is rotatably connected to the side wheel frame 214.

[0055] The plurality of pulleys 213 on the slideway assembly 204 improves the smoothness of the movement 2 being drawn out of the furnace body 1 , and the side wheels 215 assist the slide rail 212 in sliding connection with the slideway assembly 204 .

[0056] The clamping element includes a wedge block 216, a push block 217, a clamping rod 218 and a clamping spring 219. The wedge block 216 is placed at the front end of the inner wall of the fixed rail 211. The push block 217 is slidably clamped with the hinge rod 208 and the hinge seat 209. The rear end of the push block 217 abuts against the front end of the clamping rod 218. The clamping rod 218 is placed inside the hinge rod 208. The front end of the clamping rod 218 is clamped with the hinge rod 208. The end is slidably engaged with the hinge rod 208 and the hinge seat 209, one end of the clamping spring 219 abuts against the rear end of the clamping rod 218, and the other end of the clamping spring 219 abuts against the inner wall of the hinge rod 208. When the side wheel 215 moves to the front end of the fixed track 211, the movement 2 is pulled out of the furnace body 1, and the side wheel 215 abuts against the wedge block 216. The side wheel 215 slides in the direction away from the wedge block 216 and abuts against the push block 217.

[0057] The clamping element clamps the hinge rod 208 and the hinge seat 209, and the drawer frame 201 is pulled to slide and be pulled out until the drawer frame 201 is pulled out of the furnace body 1. At this time, the side wheel 215 abuts against the wedge block 216. During the movement of the side wheel, the side wheel 215 slides in the direction away from the wedge block 216 and abuts against the push block 217. The push block 217 moves toward the inside of the drawer frame 201. The push block 217 pushes the front end of the clamping rod 218 to make the clamping rod 218 move in the direction away from the push block 217 until it is separated from the hinge seat 209. The hinge rod 208 pops up and is in a vertical state, driving the insulating partition 205 to open, which is convenient for internal maintenance.

[0058] The heat dissipation assembly 203 includes a protective shell with a plurality of heat dissipation holes on the outside and a heat dissipation fan, and the heat dissipation fan is placed inside the protective shell. The isolation transformer 5 also includes a plurality of induction coils 503 , and the plurality of induction coils 503 are wound on the isolation transformer 5 .

[0059] The resistive electric heating plate 4 includes an electric heating plate bracket 401, an electric heating plate 402, an electric heating plate interface 403 and a connecting wire 404. The electric heating plate bracket 401 is a cross structure. The electric heating plate 402 is installed on the electric heating plate bracket 401. The electric heating plate 402 is a disc-shaped structure formed by a plurality of electric heating tubes. The electric heating plate interface 403 is placed at the outlet of the electric heating plate 402. The electric heating plate interface 403 is connected to the secondary coil 502 of the transformer through the connecting wire 404. The high-frequency alternating current output by the controller is 20KHz-30KHz. The furnace body 1 includes a body 101, a plurality of legs 102 and an installation groove 103. The body 101 is provided with an installation groove 103. The movement 2 is detachably and slidably connected to the installation groove 103. The plurality of legs 102 are distributed at four corners and are placed at the bottom of the body 101.

[0060] The controller changes the current into a high-frequency alternating current output of 20KHz-30KHz. After conversion by the isolation transformer, the alternating current is transmitted to the resistive electric heating plate 4 through the connecting wire 404, and the electrical energy is converted into thermal energy by the Joule heating effect, thereby generating a large amount of heat for cooking food.

[0061] The invention also discloses a method for using the electric shock prevention safety device of the electric heating cooker:

[0062] S1. Current conversion: Connect the controller to the power supply, and the controller changes the current into a high-frequency alternating current output of 20KHz-30KHz;

[0063] S2. Electromagnetic induction: high-frequency alternating current is transmitted to the primary coil 501 of the transformer, the primary coil 501 of the transformer generates an alternating magnetic field, and the secondary coil 502 of the transformer placed on top of the primary coil 501 of the transformer is converted into an alternating current after being subjected to the alternating magnetic field;

[0064] S3. Electric heating: The alternating current is transmitted to the resistive electric heating plate 4 through the connecting wire 404, and the electrical energy is converted into thermal energy by the Joule heating effect, thereby generating a large amount of heat for cooking food;

[0065] S4. Movement extraction: Pull the drawer frame 201 to slide and extract it until the drawer frame 201 is pulled out of the furnace body 1. At this time, the side wheel 215 abuts against the wedge block 216. During the movement of the side wheel, the side wheel 215 slides in the direction away from the wedge block 216 and abuts against the push block 217. The push block 217 moves toward the inside of the drawer frame 201. The push block 217 pushes the front end of the clamping rod 218 to make the clamping rod 218 move in the direction away from the push block 217 until it is separated from the hinge seat 209. The hinge rod 208 pops up and is in a vertical state, driving the insulating partition 205 to open for internal inspection.

[0066] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for the ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. An anti-electric shock safety device for an electric heating cooker, characterized in that: The invention comprises a furnace body (1), a movement (2), a support frame (3), a resistive electric heating plate (4), an isolation transformer (5) and a controller, wherein the movement (2) is placed inside the furnace body (1), the movement (2) is a drawer-type structure, the movement (2) is detachably slidably connected to the inside of the furnace body (1), the support frame (3) is placed on the top of the furnace body (1), the isolation transformer (5) is a split structure, the isolation transformer (5) comprises a transformer primary coil (501) and a transformer secondary coil (502), the transformer primary coil (501) and the transformer secondary coil (502) are symmetrical. The transformer primary coil (501) is connected to a controller, the transformer secondary coil (502) is connected to a resistive electric heating plate (4), the transformer secondary coil (502) and the resistive electric heating plate (4) are mounted on a furnace body (1), the resistive electric heating plate (4) and the movement (2) can be mounted at different positions, respectively, the transformer primary coil (501) and the controller are integrated in the movement (2); the movement (2) comprises a drawer frame (201), a plurality of spring plate assemblies (202), a plurality of heat dissipation assemblies (203), a plurality of slideway assemblies (204) and an insulating partition (205), The plurality of spring plate assemblies (202) are symmetrically arranged on both sides of the inner wall of the drawer frame (201); the plurality of slideway assemblies (204) are symmetrically arranged on both sides of the outer wall of the drawer frame (201); the heat dissipation assembly (203) is arranged in the middle of the drawer frame (201); the drawer frame (201) comprises a plurality of heat dissipation holes (210) evenly spaced apart; the spring plate assembly (202) comprises a fixing rod (206), a connecting block (207), a hinge rod (208), a hinge seat (209) and a clamping element; the fixing rod (206) is fixed on the inner wall of the drawer frame (201); the hinge seat (209) is fixed to the inner wall of the drawer frame (201); 09) is placed at the rear end of the fixing rod (206), the rear end of the hinged rod (208) is hinged to the hinge seat (209), the front end of the hinged rod (208) is connected to the connecting block (207), the clamping element is placed at the rear end of the hinged rod (208), the clamping element clamps the hinged rod (208) and the hinge seat (209), a spring is provided in the hinge seat (209), when the clamping element does not clamp the hinged rod (208), the hinge seat (209) pulls the hinged rod (208) to a vertical state, and the connecting block (207) is detachably connected to the insulating partition (205).

2. The electric shock protection device for electric heating cookers according to claim 1, characterized in that: The slideway assembly (204) comprises a fixed rail (211), a slide rail (212), a plurality of pulleys (213), a side wheel frame (214) and a side wheel (215); the fixed rail (211) is fixed on the furnace body (1); the plurality of pulleys (213) are arranged at intervals at the bottom of the slide rail (212); the plurality of pulleys (213) are rotatably connected to the bottom of the slide rail (212); the side wheel frame (214) is disposed at the rear end of the slide rail (212); and the side wheel (215) is rotatably connected to the side wheel frame (214).

3. The electric shock protection device for electric heating cookers according to claim 2, characterized in that: The clamping element comprises a wedge block (216), a push block (217), a clamping rod (218) and a clamping spring (219); the wedge block (216) is placed at the front end of the inner wall of the fixed track (211); the push block (217) is slidably clamped with the hinged rod (208) and the hinged seat (209); the rear end of the push block (217) abuts against the front end of the clamping rod (218); the clamping rod (218) is placed inside the hinged rod (208); the clamping rod (218) is placed inside the hinged rod (208); the clamping rod (218) ) front end is slidably engaged with the hinge rod (208) and the hinge seat (209), one end of the engaging spring (219) abuts against the rear end of the engaging rod (218), and the other end of the engaging spring (219) abuts against the inner wall of the hinge rod (208); when the side wheel (215) moves to the front end of the fixed track (211), the movement (2) is pulled away from the furnace body (1), and the side wheel (215) abuts against the wedge block (216); the side wheel (215) slides in a direction away from the wedge block (216) and abuts against the push block (217).

4. The electric shock protection device for electric heating cookers according to claim 3, characterized in that: The heat dissipation component (203) comprises a protective shell with a plurality of heat dissipation through holes on the outside and a heat dissipation fan, wherein the heat dissipation fan is arranged inside the protective shell.

5. The electric shock protection device for electric heating cookers according to claim 4, characterized in that: The isolation transformer (5) further comprises a plurality of induction coils (503), wherein the plurality of induction coils (503) are wound around the isolation transformer (5).

6. The electric shock protection device for electric heating cookers according to claim 5, characterized in that: The resistive electric heating plate (4) comprises an electric heating plate bracket (401), an electric heating plate (402), an electric heating plate interface (403) and a connecting wire (404); the electric heating plate bracket (401) is a cross structure; the electric heating plate (402) is mounted on the electric heating plate bracket (401); the electric heating plate (402) is a disc-shaped structure formed by a plurality of electric heating tubes surrounding each other; the electric heating plate interface (403) is disposed at the outlet end of the electric heating plate (402); and the electric heating plate interface (403) is connected to the secondary coil (502) of the transformer via the connecting wire (404).

7. The electric shock protection device for electric heating cooker according to claim 6, characterized in that: The high-frequency alternating current output by the controller is 20KHz-30KHz.

8. The electric shock protection device for electric heating cooker according to claim 7, characterized in that: The furnace body (1) comprises a body (101), a plurality of supporting legs (102) and a mounting groove (103); the body (101) is provided with a mounting groove (103); the core (2) is detachably slidably connected to the mounting groove (103); and the plurality of supporting legs (102) are distributed at four corners at the bottom of the body (101).

9. The method for using the electric shock protection device of an electric heating cooker according to claim 8, characterized in that: S1. Current conversion: Connect the controller to the power supply, and the controller changes the current into a high-frequency alternating current output of 20KHz-30KHz; S2. Electromagnetic induction: high-frequency alternating current is transmitted to the primary coil (501) of the transformer, the primary coil (501) of the transformer generates an alternating magnetic field, and the secondary coil (502) of the transformer placed on top of the primary coil (501) of the transformer is converted into an alternating current after being subjected to the alternating magnetic field; S3. Electric energy heating: The alternating current is transmitted to the resistive electric heating plate (4) via the connecting wire (404), and the electrical energy is converted into thermal energy by the Joule heating effect, thereby generating a large amount of heat for cooking food; S4. Extracting the movement: Pull the drawer frame (201) to slide and extract it until the drawer frame (201) is pulled away from the furnace body (1). At this time, the side wheel (215) abuts against the wedge block (216). During the movement of the side wheel, the side wheel (215) slides in a direction away from the wedge block (216) and abuts against the push block (217). The push block (217) moves toward the inside of the drawer frame (201). The push block (217) pushes the front end of the clamping rod (218) so that the clamping rod (218) moves in a direction away from the push block (217) until it is separated from the hinge seat (209). The hinge rod (208) pops up and is in a vertical state, driving the insulating partition (205) to open, so as to facilitate internal maintenance.

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