Electric rice cooker

Abstract

The present invention discloses an electric rice cooker, which comprises: a pot seat defining a receiving space, a thermometer socket and a safety device being provided on the bottom wall of the receiving space; a pot cover connected to the pot seat; and an inner pot arranged in the receiving space. The inner pot comprises a cup body, a heating component and a temperature measuring assembly, the heating component being arranged at the bottom of the cup body, the temperature measuring assembly comprising a thermometer, a thermometer fixing part, a thermometer pin and a metal box. The metal box accommodates the thermometer and the thermometer fixing part and is fixed at the bottom of the cup body, the thermometer fixing part is used to fix the thermometer and make the thermometer contact the bottom of the cup body, the thermometer pin is conductively connected to the thermometer and extends from the metal box in a direction away from the bottom of the cup body. When the inner pot is placed in the pot seat, the thermometer pin is inserted into the thermometer socket, the safety device abuts against the heating component, and disconnects the power supply circuit of the heating component when the temperature threshold is reached. The present invention can realize precise temperature control.

Description

Technical Field

[0001] The invention relates to the technical field of small household appliances, in particular to an electric rice cooker. Background Art

[0002] The existing electric rice cooker usually has stirring and heating functions, and mainly includes: a pot base with a rotation driving function; an inner pot placed in the pot base; a stirring knife group installed in the inner pot and driven by the pot base to rotate; a heating system arranged in the bottom area of ​​the inner pot to heat the food in the inner pot. The electric rice cooker usually also includes a thermometer, which is used to detect the temperature of the bottom area of ​​the inner pot so as to accurately control the heating of the bottom area of ​​the inner pot.

[0003] However, the thermometer of the existing electric cooker is usually arranged in the pot seat, and the thermometer is in contact with the bottom of the inner pot to measure the temperature when the inner pot of the electric cooker is placed in the pot seat. Since this temperature measurement method is relatively simple, the temperature measurement and the corresponding temperature control effect are not accurate enough. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide an electric rice cooker capable of accurately controlling temperature.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide an electric rice cooker, the electric rice cooker comprising: a pot seat, which defines a receiving space, and a thermometer socket and a safety device are arranged on the bottom wall of the receiving space; a pot cover, which is pivotally connected to the pot seat; and an inner pot, which is arranged in the receiving space of the pot seat. The inner pot comprises a cup body, a heating component and a temperature measuring assembly; the cup body has a bottom; the heating component is arranged at the bottom of the cup body, and is used to generate heat when power is turned on to heat the bottom of the cup body; the temperature measuring assembly comprises a thermometer, a thermometer fixing part, a thermometer pin and a metal box; the metal box accommodates the thermometer and the thermometer fixing part and is fixed to the bottom of the cup body, the thermometer fixing part is used to fix the thermometer and make the thermometer contact the bottom of the cup body, one end of the thermometer pin is conductively connected to the thermometer and the other end of the thermometer pin extends from the metal box in a direction away from the bottom of the cup body. When the inner pot is placed in the pot holder, the thermometer pin is inserted into the thermometer socket, the safety device abuts against the heating component arranged at the bottom of the cup body, and disconnects the power supply circuit of the heating component when the temperature threshold is reached.

[0006] Optionally, the number of the temperature measuring components is two, and the two temperature measuring components are dispersedly arranged at the bottom of the cup body.

[0007] Optionally, a receiving sleeve is provided on the bottom wall of the receiving space, and the safety device includes a safety element, a fixing block and a heat-conductive cover, the safety element is arranged in the heat-conductive cover, the heat-conductive cover is arranged in the receiving sleeve, and the upper end of the heat-conductive cover is exposed from the top of the receiving sleeve; the fixing block is installed at the bottom of the receiving sleeve to prevent the heat-conductive cover from falling off the receiving sleeve.

[0008] Optionally, the safety device further comprises a positioning block and an elastic member; the positioning block fixes the safety element and is arranged in the heat-conducting cover; the elastic member is arranged between the fixing block and the positioning block so that the heat-conducting cover elastically abuts against the heat-generating component.

[0009] Optionally, the heating component is a heating tube, which is arranged in a ring shape and has a first end and a second end; the inner pot also includes two power pins, which are respectively connected to the first end and the second end of the heating tube and extend in a direction away from the bottom of the cup body; a power socket is also provided on the bottom wall of the accommodating space, and when the inner pot is placed in the pot holder, the power pin is inserted into the power socket.

[0010] Optionally, the thermometer is a thermistor, the thermometer fixing piece is a fixing glue, the metal box and the bottom of the cup body are both made of stainless steel, the metal box is sealed and welded to the bottom of the cup body by laser welding, the heating component is a sealed and waterproof structure, and the metal box seals the thermometer between the metal box and the bottom of the cup body by sealing material.

[0011] Optionally, two ends of the thermistor are respectively connected to two temperature detector pins, the two temperature detector pins are fixed by a pin fixing block, and the pin fixing block is installed on the metal box.

[0012] Optionally, the inner liner also includes a bottom cover, which is fixed to the bottom of the cup body, and the bottom cover includes an annular inner wall and an annular outer wall, the annular inner wall and the annular outer wall form a space for accommodating the heat-generating component, and the thermometer pin extends into the space enclosed by the annular inner wall.

[0013] Optionally, the inner tank further includes a heat reflector plate, and the heat reflector plate is arranged between the heat generating component and the bottom cover.

[0014] Optionally, the inner pot also includes a stirring knife group, and the stirring knife group is installed at the bottom of the cup body.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the electric rice cooker of the present invention adopts a thermometer fixing piece to fix the thermometer and make the thermometer contact the bottom of the cup body, and adopts a metal box to accommodate the thermometer and the thermometer fixing piece and fix the metal box to the bottom of the cup body at the same time, so that the contact between the thermometer and the bottom of the cup body is tighter and more stable; at the same time, by providing a thermometer socket and a safety device on the bottom wall of the accommodating space of the rice cooker seat, when the inner pot is placed in the rice cooker seat, the thermometer pin is inserted into the thermometer socket, the safety device abuts against the heating component, and disconnects the power supply circuit of the heating component when the temperature threshold is reached, so that the temperature of the bottom of the cup body can be accurately detected and damage or safety accidents caused by excessive temperature of the heating component can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of an electric rice cooker according to an embodiment of the present invention;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of an electric rice cooker according to an embodiment of the present invention, wherein the inner pot of the electric rice cooker is taken out from the pot base of the electric rice cooker;

[0018] Figure 3 It is a three-dimensional exploded and enlarged schematic diagram of a safety device of an electric rice cooker according to an embodiment of the present invention;

[0019] Figure 4 It is a schematic cross-sectional structural diagram of a receiving sleeve of an electric rice cooker according to an embodiment of the present invention;

[0020] Figure 5 is a cross-sectional schematic diagram of an inner container according to an embodiment of the present invention;

[0021] Figure 6 is a three-dimensional exploded schematic diagram of an inner container according to an embodiment of the present invention;

[0022] Figure 7 It is a three-dimensional exploded and enlarged schematic diagram of a temperature measuring component of an inner tank according to an embodiment of the present invention;

[0023] Figure 8 is a perspective exploded and enlarged schematic diagram of a stirring knife group of an inner pot according to an embodiment of the present invention;

[0024] Fig. 9 1 is a bottom view of an inner container according to an embodiment of the present invention, wherein the bottom cover is removed. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] See also Figure 1 and Figure 2 , shows an electric rice cooker 100 provided by an embodiment of the present invention. The electric rice cooker 100 can be used to make rice, porridge, soup, etc. The electric rice cooker 100 can mainly include a rice cooker base 10, an inner pot 30 and a rice cooker cover 40.

[0027] The pot cover 40 is connected to the pot base 10 in a pivotable manner to allow the pot cover 40 to be closed by moving closer to the pot base 10 and opened by moving away from the pot base 10. For example, the pot base 10 and the pot cover 40 may be connected by a pivot passing through a pivot hole respectively provided on the pot base 10 and the pot cover 40; or, the pot base 10 and the pot cover 40 may also be connected by a pivot provided on one of the pot base 10 and the pot cover 40 and a pivot hole provided on the other of the pot base 10 and the pot cover 40.

[0028] See also Figure 5 and Figure 6 The inner pot 30 may mainly include: a cup body 31, a heating component 32, a temperature measuring component 33, two power pins 34, a stirring blade group 35, a bottom cover 36, a heat reflector 37 and a handle 38. The cup body 31 may be a cup-shaped container and have a bottom 310. The bottom 310 may be flat and may be integrally formed with the side wall of the cup body 31. The heating component 32 may be arranged on the lower side of the bottom 310 of the cup body 31 by welding, screw fixing, snap fixing, etc. so that the heating component 32 is in close contact with the bottom 310, so that the heating component 32 can generate heat when powered on and heat the bottom 310 of the cup body 31. The number of the temperature measuring components 33 may be two, and the two temperature measuring components 33 may be dispersedly arranged on the bottom 310 of the cup body 31. For example, the two temperature measuring components 33 may be distributed on both sides of the center of the bottom 310 along the diameter direction of the bottom 310. The two temperature measuring components 33 may also be arranged close to the heating component 32. By dispersively arranging two temperature measuring components 33 , the temperature of different areas of the bottom 310 can be detected, thereby achieving accurate temperature control of the heat-generating component 32 and / or the bottom 310 .

[0029] See also Figure 7 Each temperature measuring component 33 may include a temperature measuring device 331, a temperature measuring device fixing part 332, a temperature measuring device pin 333 and a metal box 334. The metal box 334 accommodates the temperature measuring device 331 and the temperature measuring device fixing part 332 and is fixed to the bottom 310 of the cup body 31. The temperature measuring device fixing part 332 is used to fix the temperature measuring device 331 and make the temperature measuring device 331 contact the bottom 310 of the cup body 31. One end of the temperature measuring device pin 333 is conductively connected to the temperature measuring device 331 and the other end of the temperature measuring device pin 333 extends from the metal box 334 in a direction away from the bottom 310 of the cup body 31.

[0030] For example Figure 2 As shown, the pot holder 10 is defined with a receiving space 11, and the inner pot 30 is used to be arranged in the receiving space 11 of the pot holder 10. The receiving space 11 may include a bottom wall 111 and a side wall 112, or the receiving space 11 is surrounded by the bottom wall 111 and the side wall 112. The side wall 112 surrounds the bottom wall 111 and extends upward. Two opposite card slots 115 may be provided at the upper part of the receiving space 11. The bottom wall 111 of the receiving space 11 may be provided with a thermometer socket 12, a power socket 13, a transmission wheel 17 and a safety device 21. When the inner pot 30 is placed in the pot holder 10, the thermometer pin 333 is inserted into the thermometer socket 12, and the safety device 21 abuts against the heating component 32 arranged at the bottom of the cup body 31, and the power supply circuit of the heating component 32 may be disconnected when the temperature threshold is reached. A control panel 16 may also be provided on the pot holder 10. The bottom wall 111 of the receiving space 11 may further be provided with a receiving sleeve 114, which may extend from the bottom wall 111 into the receiving space 11. The receiving sleeve 114 may be integrally formed with the bottom wall 111, or may be a separate component mounted on the bottom wall 111.

[0031] See also Figure 3 and Figure 4, the safety device 21 may include a safety element 211, a fixing block 212 and a heat-conducting cover 213. The safety device 21 may also include a positioning block 214 and an elastic member 215. The receiving sleeve 114 may include a guide section 1141 and a main section 1142; the guide section 1141 has a guide hole slightly larger than the upper end of the heat-conducting cover 213, and the main section 1142 has a guide hole larger than the elastic member 215. During assembly, the safety element 211 is arranged in the heat-conducting cover 213, and the heat-conducting cover 213 is arranged in the receiving sleeve 114, and the upper end of the heat-conducting cover 213 can be inserted into the guide section 1141 of the receiving sleeve 114 and exposed from the top of the receiving sleeve 114; the fixing block 212 can be installed at the bottom of the receiving sleeve 114 to prevent the heat-conducting cover 213 from falling off from the receiving sleeve 114. The lower end of the heat-conducting cover 213 may be provided with a flange, which is used to cooperate with the step surface formed between the guide section 1141 and the main section 1142, so as to prevent the heat-conducting cover 213 from falling off from the top of the receiving sleeve 114. The heat-conducting cover 213 may be made of a metal material, and its top may have a flat surface so as to contact the heat-generating component 32 as much as possible to transfer heat. The insurance element 211 may be a thermostat or a fuse. When a thermostat is used, if the temperature of the heat-generating component 32 is higher than the first temperature threshold, the thermostat may be automatically disconnected to stop the heat-generating component 32 from being powered on and generating heat; when the temperature of the heat-generating component 32 is lower than the first temperature threshold, the thermostat may automatically return to the on state to allow the heat-generating component 32 to continue to be powered on and generate heat. When a fuse is used, if the temperature of the heat-generating component 32 is higher than the second temperature threshold (the second temperature threshold may be higher than the first temperature threshold), the fuse may be automatically blown to avoid damage or safety accidents caused by excessive temperature of the heat-generating component 32. The positioning block 214 can hold the safety element 211 and is arranged in the heat-conducting cover 213; the elastic member 215 can be arranged between the fixed block 212 and the positioning block 214, and apply elastic thrust to the fixed block 212 and the positioning block 214, so that the heat-conducting cover 213 elastically abuts against the heat-generating component 32. The elastic member 215 can be a spring, elastic rubber, etc. A protrusion can be provided at the top of the fixed block 212, and a protrusion can also be provided at the bottom of the positioning block 214, so that the two protrusions can be respectively inserted into the openings at both ends of the elastic member 215, thereby achieving a stabilizing effect on the elastic member 215, that is, the elastic member 215 can only be extended and retracted in the axial direction, and will not move in a direction deviating from the axial direction.

[0032] See also Figures 5 to 9, the heating component 32 of the inner pot 30 may be a heating tube, which may be arranged in a ring shape and have a first end 321 and a second end 322 close to each other. The two power pins 34 are respectively connected to the first end 321 and the second end 322 of the heating tube, and extend in a direction away from the bottom 310 of the cup body 31. When the inner pot 30 is placed in the pot holder 10, the power pin 34 is inserted into the power socket 13. Since the number of the power pins 34 is two, the number of the power sockets 13 is also two. Of course, the bottom 310 of the cup body 31 may also be provided with a grounding pin, and a corresponding grounding socket is provided on the pot holder 10. The first end 321 and the second end 322 are conductive components and may be welded to the two power pins 34. In addition, the diameters of the first end 321 and the second end 322 may be set so that they have sufficient strength (for example, a diameter of about 2 mm to about 5 mm) to stabilize the power pins 34 welded thereon. Of course, the two power pins 34 can also be fixed to the bottom 310 of the cup body 31 in other ways so as to stably plug and match with the power socket 13 on the pot holder 10. For example, a pin positioning member 341 can be used to fix the power pin 34, and the pin positioning member 341 can include two sockets, which can respectively hold the two power pins 34 by tightly matching with the two power pins 34; when the pin positioning member 341 is fixed relative to the bottom 310 of the cup body 31, for example, the pin positioning member 341 is fixed on the bottom 310, the pin positioning member 341 can play a role in positioning the power pin 34.

[0033] The thermometer 331 may be a temperature sensor such as a thermistor, the thermometer fixture 332 may be a fixing glue or other elastic or non-elastic body with a certain elasticity, and the metal box 334 and the bottom 310 of the cup body 31 may be made of stainless steel. Of course, the metal box 334 may also be made of other suitable metal materials, as long as it can be fixed or welded to the bottom 310 of the cup body 31; in addition, the metal box 334 may be a box-shaped container, the top of which may be open so as to be fixed or welded to the bottom 310 of the cup body 31, and the bottom of which may be provided with a small opening so as to allow the thermometer pin 333 to extend from the metal box 334; it is easy to understand that the shape of the metal box 334 may be in various forms, as long as it can accommodate the thermometer 331 and the thermometer fixture 332 and be fixed to the bottom 310 of the cup body 31. The metal box 334 can be sealed and welded to the bottom 310 of the cup body 31 by, for example, laser welding; in other words, the metal box 334 can be connected to the bottom 310 of the cup body 31 by a welding structure W. Of course, the metal box 334 can also be fixed to the bottom 310 of the cup body 31 by, for example, screws, and a sealing material can be applied to the part where the metal box 334 and the bottom 310 are combined to achieve fixation and sealing; in addition, in order to ensure the sealing effect, a sealing material can be applied to the welding structure W. The heating component 32 can be a sealed waterproof structure, so that the other energized heating parts of the heating component 32 except for the two power pins 34 that need to be electrically connected to the two power pins 34 are surrounded by the waterproof structure. The metal box 334 can seal the thermometer 331 between the metal box 334 and the bottom 310 of the cup body 31 through sealing material; that is, while the metal box 334 and the bottom 310 of the cup body 31 are sealed by welding, other parts of the metal box 334 are also provided with sealing material at locations that may be permeable to water (for example, an opening opened on the metal box 334 to allow the thermometer pin 333 to extend from the metal box 334), so that all the components housed in the metal box 334 are sealed and will not come into contact with liquids such as water.

[0034] The two ends 3311 and 3312 of the thermistor can be respectively connected to the two temperature detector pins 333 by direct welding or by a wire in the middle. The two temperature detector pins 333 can also be fixed by a pin fixing block 335, and the pin fixing block 335 can be installed in the metal box 334 by screws 336, for example.

[0035] See also Figure 5 , Figure 6 and Figure 8, the mixing knife set 35 is installed at the bottom 310 of the cup body 31. The mixing knife set 35 may include a mixing knife 351, a shaft 352, a bearing 353, a locking member 354 and a retaining member 355. The bearing 353 is installed on the shaft 352, and the bearing 353 includes a flange 3531 and a joint section 3532. The mixing knife 351 is installed at the upper end of the shaft 352, and the lower end of the joint section 3532 has a protrusion 3533. The upper end of the shaft 352 has a driven end 3521. The locking member 354 has a barrel 3541 and a lever 3542, and the lever 3542 extends outward from the outer side of the barrel 3541, and the inner side of the barrel 3541 has a fastening structure for cooperating with the protrusion 3533. The fastening structure is, for example, an axial groove for the protrusion 3533 to pass axially and a circumferential groove for cooperating with the protrusion 3533 when the cylinder 3541 is rotated circumferentially. The axial groove and the circumferential groove can be mutually connected; the circumferential groove can be defined by a horizontal surface, and the horizontal surface can also be changed to a gradually lowered surface so that the protrusion 3533 is gradually compressed along the rotation of the surface, so that the mixing knife group 35 can be fixedly installed on the bottom 310 of the cup body 31. The retaining member 355 can be installed on the bottom cover 36 and is used to cooperate with the locking member 354 to prevent the locking member 354 from falling off the bottom cover 36. The bearing 353 can be inserted into the opening 312 of the bottom 310 in sequence (see Fig. 9 ), the through hole 365 of the bottom cover 36 and the cylinder 3541, so that the flange 3531 abuts against the bottom 310 of the cup body, and the engagement section 3532 engages with the opening 312 of the bottom 310 in a manner to prevent the bearing 353 from rotating. The cylinder 3541 is driven to rotate by shifting the lever 3542, so that the protrusion 3533 at the lower end cooperates with the fastening structure, thereby locking the stirring knife group 35 on the cup body 31. In addition, a wave spring 356 can be arranged between the bottom cover 36 and the locking member 354 to increase the holding force of the stirring knife group 35. A waterproof rubber ring 357 can also be arranged between the portion of the bottom cover 36 that defines the through hole 365 and the bottom 310 of the cup body 31, so as to fully seal the opening 312 of the bottom 310 after the product is assembled to prevent liquid from leaking from the opening 312 of the bottom 310. By pushing the lever 3542 in the opposite direction, the barrel 3541 can be rotated so that the protrusion 3533 is disengaged from the fastening structure, thereby removing the portion of the mixing knife assembly 35 other than the barrel 3541 and the retaining member 355 from the cup body 31 .

[0036] The bottom cover 36 may be fixed to the bottom 310 of the cup body 31 or to a portion of the cup body 31 near the bottom 310. The bottom cover 36 may include an annular inner wall 361 and an annular outer wall 362, the annular inner wall 361 and the annular outer wall 362 enclose a space 363 for accommodating the heat generating component 32, and the temperature measuring device pin 333 extends into the space 364 enclosed by the annular inner wall 361. The portion of the bottom cover 36 defining the through hole 365 may be provided with a plurality of openings so that the temperature measuring device pin 333 and the power supply pin 34 can pass therethrough, and the heat conducting cover 213 of the safety device 21 can also pass therethrough to abut against the heat generating component 32 disposed at the bottom of the cup body 31.

[0037] The heat reflection plate 37 may be disposed between the heat generating component 32 and the bottom cover 36 , and is used to reflect the heat from the heat generating component 32 to the bottom 310 of the cup body 31 , thereby effectively utilizing the heat of the heat generating component 32 .

[0038] The handles 38 may be two and respectively fixed to two opposite sides of the cup body 31. When the inner pot 30 is disposed in the receiving space 11 of the pot holder 10, the slot 115 above the receiving space 11 of the pot holder 10 may receive the handles 38, thereby preventing the inner pot 30 from rotating.

[0039] Return to see Figure 1 and Figure 2 When the inner pot 30 is placed in the pot holder 10, the thermometer pin 333 can be inserted into the thermometer socket 12, and the power pin 34 can be inserted into the power socket 13. Since each thermometer pin 333 can be inserted into a thermometer socket 12, when two temperature measuring components 33 are used, a total of four thermometer pins 333 are provided, and four thermometer sockets 12 are correspondingly provided on the bottom wall 111. Thus, the thermometer pin 333 can lead out the temperature signal measured by the thermometer 331, and then transmit it to the control circuit in the pot holder 10; and the power pin 34 can transmit current from the power socket 13 to the heating component 32, so that the heating component 32 generates heat to heat the bottom 310 of the cup body 31, and then heat the food in the inner pot 30. The control panel 16 provided on the pot holder 10 can be used to control the operation of the electric rice cooker 100 through touch operation, and the control panel 16 can also be changed into a mechanical knob or button. The pot holder 10 may be provided with a driving motor. When the micro switch 14 is pressed to conduct the circuit, the driving motor can drive the driven end 3521 of the shaft 352 of the stirring blade assembly 35 to rotate through the transmission wheel 17, thereby driving the stirring blade 351 to rotate in the inner pot 30. The driving motor can be directly engaged with the transmission wheel 17, or can drive the transmission wheel 17 to rotate through an intermediate transmission wheel and / or a belt.

[0040] The pot base 10, the inner pot 30 and the pot cover 40 may also include other necessary components to realize their functions, which are well known to those skilled in the art and will not be described in detail herein.

[0041] Compared with the prior art, the beneficial effects of the present invention are as follows: the electric rice cooker of the present invention adopts a thermometer fixing piece to fix the thermometer and make the thermometer contact the bottom of the cup body, and adopts a metal box to accommodate the thermometer and the thermometer fixing piece and fix the metal box to the bottom of the cup body at the same time, so that the contact between the thermometer and the bottom of the cup body is tighter and more stable; at the same time, by providing a thermometer socket and a safety device on the bottom wall of the accommodating space of the rice cooker seat, when the inner pot is placed in the rice cooker seat, the thermometer pin is inserted into the thermometer socket, the safety device abuts against the heating component, and disconnects the power supply circuit of the heating component when the temperature threshold is reached, so that the temperature of the bottom of the cup body can be accurately detected and damage or safety accidents caused by excessive temperature of the heating component can be avoided.

[0042] The above description is only an implementation mode of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electric rice cooker, characterized in that: The electric rice cooker comprises: A pot holder defines a receiving space, wherein a temperature measuring device socket and a safety device are arranged on the bottom wall of the receiving space; a pot cover pivotably connected to the pot base; and An inner pot, which is arranged in the receiving space of the pot seat; Wherein, the liner includes a cup body, a heating component and a temperature measuring assembly; the cup body has a bottom; the heating component is arranged at the bottom of the cup body, and is used to generate heat when powered on to heat the bottom of the cup body; the temperature measuring assembly includes a thermometer, a thermometer fixing part, a thermometer pin and a metal box; the metal box accommodates the thermometer and the thermometer fixing part and is fixed to the bottom of the cup body, the thermometer fixing part is used to fix the thermometer and make the thermometer contact the bottom of the cup body, one end of the thermometer pin is conductively connected to the thermometer and the other end of the thermometer pin extends from the metal box in a direction away from the bottom of the cup body; and When the inner pot is placed in the pot holder, the thermometer pin is inserted into the thermometer socket, the safety device abuts against the heating component arranged at the bottom of the cup body, and disconnects the power supply circuit of the heating component when the temperature threshold is reached; The thermometer is a thermistor, the thermometer fixing part is a fixing glue, the metal box and the bottom of the cup body are both made of stainless steel, the metal box is sealed and welded to the bottom of the cup body by laser welding, the heating component is a sealed and waterproof structure, and the metal box seals the thermometer between the metal box and the bottom of the cup body by sealing material. The two ends of the thermistor are respectively connected to two thermometer pins, the two thermometer pins are fixed by a pin fixing block, and the pin fixing block is installed on the metal box.

2. The electric rice cooker according to claim 1, characterized in that: The number of the temperature measuring components is two, and the two temperature measuring components are dispersedly arranged at the bottom of the cup body.

3. The electric rice cooker according to claim 1, characterized in that: A receiving sleeve is provided on the bottom wall of the receiving space, and the safety device includes a safety element, a fixing block and a heat-conductive cover, wherein the safety element is arranged in the heat-conductive cover, and the heat-conductive cover is arranged in the receiving sleeve, and the upper end of the heat-conductive cover is exposed from the top of the receiving sleeve; the fixing block is installed at the bottom of the receiving sleeve to prevent the heat-conductive cover from falling off from the receiving sleeve.

4. The electric rice cooker according to claim 3, characterized in that: The safety device further comprises a positioning block and an elastic member; the positioning block fixes the safety element and is arranged in the heat-conducting cover; the elastic member is arranged between the fixing block and the positioning block so that the heat-conducting cover elastically abuts against the heat-generating component.

5. The electric rice cooker according to claim 1, characterized in that: The heating component is a heating tube, which is arranged in a ring shape and has a first end and a second end; the inner pot also includes two power pins, which are respectively connected to the first end and the second end of the heating tube and extend in a direction away from the bottom of the cup body; a power socket is also provided on the bottom wall of the accommodating space, and when the inner pot is placed in the pot seat, the power pin is inserted into the power socket.

6. The electric rice cooker according to claim 1, characterized in that: The inner liner also includes a bottom cover, which is fixed to the bottom of the cup body. The bottom cover includes an annular inner wall and an annular outer wall, which enclose a space for accommodating the heating component, and the thermometer pin extends into the space enclosed by the annular inner wall.

7. The electric rice cooker according to claim 6, characterized in that: The inner tank further comprises a heat reflection plate, and the heat reflection plate is arranged between the heat generating component and the bottom cover.

8. The electric rice cooker according to claim 6, characterized in that: The inner pot also includes a stirring knife group, which is installed at the bottom of the cup body; the stirring knife group includes a locking piece and a retaining piece, and the retaining piece is installed on the bottom cover and is used to cooperate with the locking piece to prevent the locking piece from falling off from the bottom cover.

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