Electromagnetic heating rice cooker
By designing a movable and deformable temperature probe and a multi-point temperature measurement system in the electromagnetic heating rice cooker, the problem of the temperature measurement device being affected by the temperature of the inner pot and the amount of rice is solved, achieving higher cooking control precision and cooking effect.
Patent Information
- Application Number
- CN202520114052.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-01-17
AI Technical Summary
The temperature measuring device of existing electromagnetic heating rice cookers is easily affected by the temperature of the inner pot and the amount of rice, resulting in insufficient control accuracy in the cooking process.
A temperature probe structure was designed, in which the probe and the pot lid are detachable, the probe body is movable and deformable, and the probe extends into or leaves the heating cavity through movable deformation. Combined with a multi-point temperature measurement and heat dissipation fan system, the influence of the pot body temperature on the temperature measurement is reduced.
It improves temperature detection accuracy, enhances the control precision of the cooking process and the cooking effect, and reduces equipment failure rate.
Smart Images
Figure CN223929967U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of cooking equipment, specifically to an electromagnetic heating rice cooker. Background Technology
[0002] An electromagnetic heating rice cooker is a type of rice cooker that heats food using a magnetic field generated by electromagnetic induction. To improve the precision of control over the cooking process, electromagnetic heating rice cookers with temperature measuring devices have appeared on the market. These devices are usually fixedly installed in the inner pot. However, the temperature measuring device is easily affected by the temperature of the inner pot itself or the amount of rice, which can cause it to be unable to accurately detect the temperature of the cooking cavity inside the inner pot. This affects the precision of control over the cooking process and is not conducive to improving the cooking effect.
[0003] Therefore, further improvements are needed. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an electromagnetic heating rice cooker that can improve the temperature measurement accuracy of the temperature probe, improve the product's control accuracy over the cooking process, and enhance the cooking effect.
[0005] The purpose of this utility model is achieved as follows:
[0006] An electromagnetic heating rice cooker includes a main body and a lid attached to its upper side. A heating cavity for heating food is formed between the lid and the main body. A temperature probe is connected to the lid. The temperature probe includes a probe and a probe body. The probe extends through the lid toward the heating cavity. The probe is spaced apart from the bottom and side wall of the heating cavity. The probe body is fixedly installed to the main body. An electronic control board capable of processing the temperature probe signal is provided inside the main body. The electronic control board is electrically connected to the temperature probe.
[0007] As a specific embodiment, the probe is detachable from the pot lid, and at least part of the needle body is movable and deformable. The movable deformation of the needle body can drive the probe to extend into or leave the heating chamber through the pot lid.
[0008] As a specific embodiment, the outer side of the main body of the pot is provided with a display and control device. The display and control device includes an outer box, a circuit board, and an outer panel with display and touch control functions. The outer box is installed and connected to the outer side of the main body of the pot, and the outer panel is installed and connected to the outer side of the outer box. The circuit board is located on the inner side of the outer box and is electrically connected to the outer panel and the control board respectively.
[0009] As a specific embodiment, the pot body includes an inner pot and a pot base. The heating chamber is located inside the inner pot, and the pot base is fitted onto the outside of the inner pot. A draining chamber is formed between the inner pot and the pot base. The draining chamber has a U-shaped cross-section. The upper side of the draining chamber is open and is arranged circumferentially between the upper openings of the inner pot and the pot base. The draining chamber is provided with a drain outlet that can discharge liquid to the outside of the pot body.
[0010] As a specific embodiment, the drain outlet is located at the bottom of the unloading chamber and extends downward through the pot base.
[0011] As a specific embodiment, the drain outlet is located at the bottom center of the unloading chamber, and the bottom of the unloading chamber has a guide slope that is radially inclined from the outside to the inside downwards.
[0012] As a specific embodiment, the drain outlet is equipped with a temperature measuring head, the cross-section of which is shaped like a "Z". The upper side of the temperature measuring head abuts against the bottom of the inner liner. The temperature measuring head is connected to an elastic reset member that can close the drain outlet by making its lower side face upward. The inner liner can press down on the temperature measuring head to open the drain outlet by making the lower side of the temperature measuring head face downward.
[0013] As a specific embodiment, the temperature sensor is also electrically connected to the electronic control board.
[0014] As a specific embodiment, the pot base includes a winding reel and a water receiving shell. The water receiving shell is fitted onto the outside of the inner pot to form a water discharge cavity. The winding reel is fitted onto the bottom outside of the water receiving shell, and an electromagnetic coil capable of heating the inner pot is wound on the winding reel.
[0015] As a specific solution, the water receiving shell is formed from plastic material.
[0016] As a specific embodiment, the winding reel is provided with an isolation pipe below the drain outlet. The isolation pipe extends downwards, and the opening at the lower end of the isolation pipe forms a vertical gap with the electromagnetic coil.
[0017] As a specific embodiment, an inner transition section is provided between the bottom and the side wall of the inner liner, and an outer transition section is provided on the winding spool. The electromagnetic coil is at least partially wound on the outside of the outer transition section, and the vertical projections of the inner transition section and the outer transition section at least partially overlap.
[0018] The lower side of the main body of the pot is connected to a bottom shell, which is an integrally formed structure. The bottom shell and the water receiving shell are fixed together by a locking device to form an electrical cavity. The control board and the electromagnetic coil are respectively disposed in the electrical cavity. A first cooling fan is provided in the electrical cavity below the electromagnetic coil. A second cooling fan with its air outlet facing the control board is also provided in the electrical cavity. The bottom of the bottom shell has a first air outlet and a second air outlet. The air inlets of the first and second cooling fans are respectively connected to the first air outlet, and the air outlets of the first and second cooling fans are respectively connected to the second air outlet; or, the air outlets of the first and second cooling fans are respectively connected to the first air outlet, and the air inlets of the first and second cooling fans are respectively connected to the second air outlet. A baffle plate is provided on the outer side of the bottom shell between the first and second air outlets.
[0019] The beneficial effects of this utility model are:
[0020] Since the probe does not directly contact the main body of the pot, it only needs to directly detect the steam temperature during the cooking process. This reduces the influence of the pot's own temperature on the probe, improves the probe's temperature measurement accuracy, and thus enhances the product's control over the cooking process, resulting in better cooking performance. Attached Figure Description
[0021] Figure 1 This is a cross-sectional view of an embodiment of the present utility model. Figure 1 .
[0022] Figure 2 This is a cross-sectional view of an embodiment of the present utility model. Figure 2 .
[0023] Figure 3 This is a structural schematic diagram of an embodiment of the present utility model.
[0024] Figure 4 This is an enlarged view of embodiment A of the present invention. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0026] See Figures 1-4 This electromagnetic heating rice cooker includes a main body and a lid 1 attached to its upper side. A heating cavity 11 for heating food is formed between the lid 1 and the main body. A temperature probe 2 is connected to the lid 1. The temperature probe 2 includes a probe 21 and a needle body 22. The probe 21 extends through the lid 1 toward the heating cavity 11. The probe 21 is spaced from the bottom and side wall of the heating cavity 11. The needle body 22 is fixedly installed to the main body. An electronic control board 8 capable of processing the signal from the temperature probe 2 is provided inside the main body. The electronic control board 8 is electrically connected to the temperature probe 2. Since the probe 21 does not directly contact the main body, the probe 21 only needs to directly detect the steam temperature during the cooking process. Therefore, the influence of the main body's own temperature and factors such as the amount of rice on the probe 21 can be reduced, improving the temperature measurement accuracy of the probe 21. This improves the product's control accuracy over the cooking process and enhances the cooking effect.
[0027] Furthermore, the probe 21 is detachable from the pot lid 1, and the needle body 22 is at least partially movable and deformable. The movable deformation of the needle body 22 can drive the probe 21 to extend into or leave the heating chamber 11 through the pot lid 1, so as to minimize the influence of the temperature probe 2 on the movement of the pot lid 1.
[0028] Furthermore, a display and control device is provided on the outside of the main body of the pot. The display and control device includes an outer box 81, a circuit board 82, and an outer panel 83 with display and touch control functions. The outer box 81 is installed and connected to the outside of the main body of the pot, and the outer panel 83 is installed and connected to the outside of the outer box 81. The circuit board 82 is located on the inside of the outer box 81 and is electrically connected to the outer panel 83 and the control board 8 respectively. Users can receive the working status information of the equipment more intuitively and can control the working status of the equipment more conveniently.
[0029] Furthermore, the main body of the pot includes an inner pot 7 and a pot base. The heating chamber 11 is located inside the inner pot 7, and the pot base is fitted outside the inner pot 7. A draining chamber 3 is formed between the inner pot 7 and the pot base. The cross-section of the draining chamber 3 is U-shaped. The upper side of the draining chamber 3 is open and is arranged circumferentially between the upper opening of the inner pot 7 and the pot base. The draining chamber 3 is provided with a drain outlet 31 that can discharge liquid to the outside of the main body of the pot. During the cooking process, the overflow water generated by the heating chamber 11 can be discharged to the outside through the drain outlet 31 via the draining chamber 3, which is convenient for users to collect the overflow water and reduces the chance of the overflow water affecting the surrounding environment.
[0030] Furthermore, the drain outlet 31 is located at the bottom of the unloading chamber 3, and the drain outlet 31 extends downward through the pot base. The overflow water can flow to the bottom of the unloading chamber 3 under the action of gravity and then be discharged through the drain outlet 31.
[0031] Furthermore, the drain outlet 31 is located at the center of the bottom of the unloading chamber 3, and the bottom of the unloading chamber 3 has a guide slope 32. The guide slope 32 is arranged radially from the outside to the inside and downwards to reduce the chance of water accumulation at the bottom of the unloading chamber 3.
[0032] Furthermore, the drain outlet 31 is equipped with a temperature measuring head 4. The cross-section of the temperature measuring head 4 is shaped like a "Z". The upper side of the temperature measuring head 4 abuts against the bottom of the inner pot 7. The temperature measuring head 4 is connected to an elastic reset member (not shown in the figure) that can close the drain outlet 31 by making its lower side face upward. The inner pot 7 can press down on the temperature measuring head 4 to open the drain outlet 31 by making the lower side of the temperature measuring head 4 face downward. When the inner pot 7 is not placed on the pot stand, the temperature measuring head 4 can keep the drain outlet 31 closed. After the inner pot 7 is placed on the pot stand, the temperature measuring head 4 can keep the drain outlet 31 open.
[0033] Furthermore, the temperature measuring head 4 is also electrically connected to the electronic control board 8. The temperature measuring head 4, together with the probe 21, can measure the temperature of the heating cavity 11 and the bottom of the pot body respectively. The two sets of temperature measurement data can further improve the overall temperature measurement accuracy, allowing the electronic control board 8 to more accurately control the working status of the equipment, thereby improving the cooking effect.
[0034] Furthermore, the pot base includes a winding reel 5 and a water receiving shell 6. The water receiving shell 6 is fitted on the outside of the inner pot 7 to form a water discharge cavity 3. The winding reel 5 is fitted on the bottom outside of the water receiving shell 6. An electromagnetic coil (not shown in the figure) that can heat up the inner pot 7 is wound on the winding reel 5.
[0035] Furthermore, the water receiving shell 6 is made of plastic to prevent it from heating up under electromagnetic influence. As an equivalent alternative, the water receiving shell 6 can also be made of other non-magnetic materials.
[0036] Furthermore, an isolation pipe 51 is provided below the drain outlet 31 on the winding reel 5. The isolation pipe 51 extends downward and a vertical gap is formed between the opening at the lower end of the isolation pipe 51 and the electromagnetic coil. The isolation pipe 51 can reduce the chance of overflow water coming into contact with the electromagnetic coil, thereby reducing the failure rate of the equipment.
[0037] Furthermore, an inner transition portion 71 is provided between the bottom and the side wall of the inner pot 7, and an outer transition portion 52 is provided on the winding coil 5. The electromagnetic coil is at least partially wound on the outside of the outer transition portion 52. The vertical projections of the inner transition portion 71 and the outer transition portion 52 at least partially overlap, so that the inner transition portion 71 of the inner pot 7 can also be heated under electromagnetic action, thereby further improving the cooking effect.
[0038] Preferably, the inner transition portion 71 and the outer transition portion 52 can adopt an arc-shaped structure.
[0039] Furthermore, a bottom shell 9 is connected to the lower side of the main body of the pot. The bottom shell 9 is an integrally formed structure. The bottom shell 9 and the water receiving shell 6 are installed and fixed by a locking device to form an electrical cavity 93. The control board 8 and the electromagnetic coil are respectively set in the electrical cavity 93. A first cooling fan 101 is provided in the electrical cavity 93 corresponding to the position below the electromagnetic coil. A second cooling fan 102 with its air outlet facing the control board 8 is also provided in the electrical cavity 93. The first cooling fan 101 and the second cooling fan 102 can respectively heat up and cool down the electromagnetic coil and the control board 8, so that the electromagnetic coil and the control board 8 have a longer service life.
[0040] The bottom of the bottom shell 9 is provided with a first air vent 91 and a second air vent 92. The air inlets of the first cooling fan 101 and the second cooling fan 102 are respectively connected to the first air vent 91, and the air outlets of the first cooling fan 101 and the second cooling fan 102 are respectively connected to the second air vent 92; or, the air outlets of the first cooling fan 101 and the second cooling fan 102 are respectively connected to the first air vent 91, and the air inlets of the first cooling fan 101 and the second cooling fan 102 are respectively connected to the second air vent 92. A baffle plate 94 is provided on the outer side of the bottom shell 9 between the first air vent 91 and the second air vent 92. The baffle plate can reduce the chance of mutual interference between hot and cold airflows on the outer side of the bottom of the bottom shell 9, so that the first cooling fan 101 and the second cooling fan 102 can better dissipate heat for the electromagnetic coil and the electronic control board 8.
[0041] The above embodiments are merely preferred embodiments of this utility model, and other implementations are also possible. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model, and all such equivalent modifications or substitutions are included within the scope set forth in the claims of this application.
Claims
1. An electromagnetic heating rice cooker, comprising a cooker body and a cooker lid (1) attached to its upper side, wherein a heating cavity (11) for heating food is formed between the cooker lid (1) and the cooker body, characterized in that, The pot cover (1) is connected with a temperature probe (2). The temperature probe (2) includes a probe head (21) and a probe body (22). The probe head (21) passes through the pot cover (1) and extends towards the heating cavity (11). There are gaps between the probe head (21) and both the bottom and the side wall of the heating cavity (11). The probe body (22) is fixedly installed with the pot body. An electronic control board (8) capable of processing the signal of the temperature probe (2) is provided in the pot body, and the electronic control board (8) is electrically connected to the temperature probe (2).
2. The electromagnetic heating rice cooker according to claim 1, characterized in that: The probe head (21) is detachably separable from the pot cover (1). At least part of the probe body (22) can be actively deformed. The probe body (22) can drive the probe head (21) to extend into or leave the heating cavity (11) through the pot cover (1) by active deformation.
3. The electromagnetic heating rice cooker according to claim 1, characterized in that: A display and control device is provided on the outer side of the pot body. The display and control device includes an outer box body (81), a circuit board (82), and an outer panel (83) with display and touch control functions. The outer box body (81) is installed and connected to the outer side of the pot body. The outer panel (83) is installed and connected to the outer side of the outer box body (81). The circuit board (82) is arranged inside the outer box body (81) and is electrically connected to the outer panel (83) and the electronic control board (8) respectively.
4. The electromagnetic heating rice cooker according to any one of claims 1-3, characterized in that: The pot body includes an inner pot (7) and a pot base. The heating cavity (11) is arranged inside the inner pot (7). The pot base is sleeved outside the inner pot (7). A water discharge cavity (3) is formed between the inner pot (7) and the pot base. The cross-section of the water discharge cavity (3) is U-shaped. The upper side of the water discharge cavity (3) is open and is arranged circumferentially between the upper openings of the inner pot (7) and the pot base. The water discharge cavity (3) has a drain port (31) capable of discharging liquid to the outside of the pot body.
5. The electromagnetic heating rice cooker according to claim 4, characterized in that: The drain port (31) is arranged at the bottom of the water discharge cavity (3), and the drain port (31) penetrates downward through the pot base.
6. The electromagnetic heating rice cooker according to claim 5, characterized in that: The drain port (31) is arranged at the central position of the bottom of the water discharge cavity (3). The bottom of the water discharge cavity (3) has a guiding inclined surface (32), and the guiding inclined surface (32) is inclined downward from the outside to the inside along the radial direction.
7. The electromagnetic heating rice cooker according to claim 5, characterized in that: The drain port (31) is provided with a temperature measuring head (4). The cross-section of the temperature measuring head (4) is in a shape like a capital letter "J". The upper side of the temperature measuring head (4) abuts against the bottom of the inner pot (7). The temperature measuring head (4) is connected with an elastic resetting member capable of closing the drain port (31) upward at its lower side. The inner pot (7) can press down the temperature measuring head (4) to open the drain port (31) downward at the lower side of the temperature measuring head (4). The temperature measuring head (4) is also electrically connected to the electronic control board (8).
8. The electromagnetic heating rice cooker according to claim 5, characterized in that: The pot base includes a wire winding disc (5) and a water receiving shell (6). The water receiving shell (6) is sleeved outside the inner pot (7) to form a water discharge cavity (3). The wire winding disc (5) is sleeved outside the bottom of the water receiving shell (6), and an electromagnetic coil capable of heating the inner pot (7) is wound on the wire winding disc (5). The water receiving shell (6) is processed and formed by plastic material.
9. The electromagnetic heating rice cooker according to claim 8, characterized in that: At a position corresponding to the lower side of the drain port (31) on the wire winding disc (5), an isolation pipe (51) is provided. The isolation pipe (51) extends downward, and there is a gap in the vertical direction between the opening at the lower end of the isolation pipe (51) and the electromagnetic coil.
10. The electromagnetic heating rice cooker according to claim 8, characterized in that: An inner transition portion (71) is provided between the bottom and the side wall of the inner liner (7), and an outer transition portion (52) is provided on the winding spool (5). The electromagnetic coil is at least partially wound on the outside of the outer transition portion (52), and the vertical projections of the inner transition portion (71) and the outer transition portion (52) at least partially overlap. The lower side of the main body of the pot is connected to a bottom shell (9). The bottom shell (9) is an integrally formed structure. The bottom shell (9) and the water receiving shell (6) are installed and fixed by a locking device to form an electrical cavity (93). The control board (8) and the electromagnetic coil are respectively set in the electrical cavity (93). The electrical cavity (93) is provided with a first cooling fan (101) at the position below the electromagnetic coil. The electrical cavity (93) is also provided with a second cooling fan (102) with the air outlet facing the control board (8). The bottom of the bottom shell (9) is provided with a first air outlet (91) and a second air outlet (92). The first cooling fan (101) 01) The air inlet of the first air outlet (91) and the air outlet of the second cooling fan (102) are respectively connected to the first air outlet (91), and the air outlet of the first cooling fan (101) and the second cooling fan (102) are respectively connected to the second air outlet (92); or, the air outlet of the first cooling fan (101) and the second cooling fan (102) are respectively connected to the first air outlet (91), and the air inlet of the first cooling fan (101) and the second cooling fan (102) are respectively connected to the second air outlet (92), and a baffle plate (94) is provided on the outer side of the bottom shell (9) between the first air outlet (91) and the second air outlet (92).