JP4258418B2 - rice cooker - Google Patents

Description

  The present invention relates to an induction heating rice cooker provided with weight detection means for detecting the weight of a cooked product.

In recent years, rice cookers using induction heating means have become widespread in the market. On the other hand, in the rice cooker using a heater, the weight of the pan (the total weight of the pan, water and rice) is detected by the weight detection means at the same time as the start of cooking, and the amount of rice cooked is determined. ) Is known (for example, see Patent Document 1).
Japanese Patent Publication No. 01-27724

  However, the induction heating rice cooker needs to keep the positional relationship between the pan and the induction heating means constant, and also needs a certain gap between the pan and the storage section for storing the pan. Because of its unique configuration, even if it is going to detect the weight of the cooked food like the conventional heater-type rice cooker, the conventional weight detection means cannot simply be used, and the weight is detected with high accuracy. Cannot be done.

  The present invention solves the above-mentioned conventional problems, and detects the weight of the cooked food with high accuracy, and by induction control to the induction heating means according to the weight of the cooked food, induction heating can cook delicious rice. The purpose is to provide a rice cooker.

In order to solve the above-mentioned conventional problems, the rice cooker of the present invention includes an induction heating means for induction heating a pot, a temperature detection means for detecting the temperature of the pot, a weight detection element attached to the storage unit, and a weight detection element. A cylindrical detection body that is provided outside the temperature detection means and supports the total weight of the pan separately from the temperature detection means, and the food in the pan and the pan by the weight detection element via the detection body Temperature detection means, weight detection means for detecting the total weight of the detection body , and control for calculating the weight of the cooked food based on the output signal of the weight detection means and controlling energization to the induction heating means in accordance with the weight of the cooked food And a plurality of guide rollers equipped with a predetermined gap with respect to the side surface of the pan.

  As a result, the pan is guided by the guide roller and stored in a predetermined position of the storage portion, and the weight can be detected by the weight detection means, and when the pan is stored, a predetermined gap exists between the side surface of the pan and the guide roller. The weight of the food can be detected with accuracy. For this reason, delicious rice can be cooked by energization control to the induction heating means according to the weight of the food.

  The rice cooker of the present invention can cook delicious rice by detecting the weight of the food with high accuracy and by controlling the energization of the induction heating means according to the weight of the food.

1st invention, the main body with which the upper surface opened, the pan accommodated in the storage part of the said main body, the lid | cover which covers the said storage part so that opening and closing is possible, the induction heating means which induction-heats the said pan, A temperature detection means for detecting the temperature of the pan, a weight detection element attached to the storage section, a weight detection element attached to the weight detection element, provided outside the temperature detection means and separate from the temperature detection means. A cylindrical detector that supports the total weight of the pan, and a weight detector that detects the total weight of the pan, the cooked food in the pan, the temperature detection means, and the detector through the detector through the weight detector. Means, a controller for calculating the weight of the food based on the output signal of the weight detection means, and controlling the energization to the induction heating means according to the weight of the food, and a predetermined gap with respect to the side surface of the pan. Guide row equipped with multiple The pan is guided by the guide roller and stored at a predetermined position in the storage unit, and the weight can be detected by the weight detection means. When the pan is stored, there is no gap between the side of the pan and the guide roller. Since the predetermined gap exists, the weight of the cooked food can be detected with high accuracy. For this reason, it is possible to cook delicious rice by energization control to the induction heating means according to the weight of the cooked product. In the second invention, in particular, in the first invention, the radius of curvature of the pan facing surface of the guide roller is By making the curvature radius substantially the same as the opposite side surface of the pan, the pan comes into contact with the tilt guide roller when the user loosens or loosens the rice from the pan. Since the radius of curvature of the guide roller surface that is in contact with the radius of curvature of the pan is approximately the same, the contact area increases, so a large frictional force can be secured, and the movement in the rotational direction is strongly suppressed. It is difficult to rotate, making it easier to loosen and loosen rice.

  In the third invention, in particular, in the first or second invention, the surface roughness of the surface facing the pan of the guide roller is substantially equal to the surface roughness of the side surface of the facing pan. When loosening or loosening from the pan, the pan abuts against the tilt guide roller. Since the surface roughness of both the guide roller and the pan that are in contact with each other is substantially the same, the contact area is increased, so that a large frictional force is generated and the movement in the rotational direction is further strongly suppressed. For this reason, the pan is difficult to rotate, and it becomes easy to loosen and loosen the rice.

  According to a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, an internal space is provided between the bearing member supporting the guide roller and the guide roller, so that the user can remove the rice from the pan. When loosening, the pan comes into contact with the tilt guide roller. If an internal space exists between the guide roller and the bearing member, the guide roller is deformed along the side surface shape of the pan and the contact area is increased, so that a large frictional force is generated, and the movement in the rotation direction is further strongly suppressed. The pan is difficult to rotate, making it easier to loosen and loosen the rice.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
1-5 shows the rice cooker in Embodiment 1 of this invention.

  As shown in FIG. 1, the main body 10 of the rice cooker whose upper surface is open contains a pan 12 detachably in a storage portion 30. The upper surface of the storage unit 30 is covered with a lid 20 so as to be freely opened and closed. Moreover, although the accommodating part 30 is comprised from the upper upper frame 32 and the lower coil base 31 in this Embodiment, these may be integrated.

  The pan 12 is formed of a magnetic material such as stainless steel or iron, and has a flange 121 protruding outward from the upper end opening, and the flange 121 is placed in a state of being lifted from the upper end of the upper frame 32, thereby 30 is detachably stored. The pan 12 has a gap 68 between it and the storage portion 30 when stored.

  The part of the coil base 31 facing the bottom of the pan 12 is provided with induction heating means 13 comprising a coil for induction heating the pan 12 and cooking the food 19 in the pan 12. The induction heating means 13 includes an outer coil disposed outside the bottom surface of the coil base 31 and an inner coil disposed inside the bottom surface. Each of the inner and outer coils is a winding having a center substantially directly below the center of the bottom of the pan 12. The cooked food 19 is rice before cooking rice, water, cooked rice, or the like.

  A microcomputer (not shown) is mounted on the control unit 14 that controls energization (energization rate and / or energization amount) to the induction heating means 13. The microcomputer controls the current for generating an alternating magnetic field in the induction heating means 13 by software.

  On the base 21 fixed with a gap at the bottom of the coil base 31, weight detecting means 40 for detecting the weight of the pan 12, that is, the weight of the cooked food 19, the pan detecting means 16 for detecting the presence or absence of the pan 12, and Temperature detecting means 52 for detecting the temperature of the pan 12 is provided.

  As shown in FIG. 2, the weight detection means 40 includes a load cell 41, a sensor base (insulating member) 42, and a cylindrical detection body 43. The load cell 41 is a robust type load transducer (weight detection element). The load cell 41 has a screw hole 411 at one end and a screw hole 412 at the other end. A thin plate 211 having a screw hole 212 is attached to the base 21. One end of the load cell 41 is screwed to the base 21 via a screw hole 212 and a screw hole 411. The other end of the load cell 41 has a gap with respect to the base 21. A resistance wire strain gauge 413 is attached to the load cell 41. A change in resistance of the strain gauge 413 when the load cell 41 is bent by a load is taken out as an electrical signal by the bridge circuit.

  The weight detection means 40 supports and detects the weight of the pan 12 only at the substantially central portion of the outer bottom thereof. Therefore, the weight detection means 40 can be attached without interfering with the induction heating means 13. Since the pan 12 supported by the center portion of the bottom is stably disposed in the storage portion 30, the induction heating means 13 can heat the pan 12 appropriately and stably.

  The sensor base 42 is made of resin, and the load cell 41 is fitted into the recess 421. The sensor base 42 is screwed to one end of the load cell 41 through a screw hole 422 and a screw hole 412.

  The detection body 43 is made of aluminum having a thickness of 2 mm, and has two claw portions 431 facing the lower side. The detection body 43 is fixed to the sensor base 42 by passing the claw portion 431 through the detection body fixing hole 423 of the sensor base 42 and bending it. The detection body 43 has a flange 432 protruding inward at the upper end. The detection body 43 is passed through one through hole provided in the central portion of the bottom of the coil base 31 (the central portion of the induction heating means 13, where the induction heating means 13 is not provided). The The upper end of the detection body 43 is positioned higher than the inner bottom portion of the coil base 31 (FIG. 1).

  The temperature detection means 52 has two ridges 521 facing the upper part, and is inserted into the detection body 43 from below. The outer diameter of the flange 521 is substantially the same as the inner diameter of the detection body 43, and the temperature detection means 52 does not come out from the detection body 43. Further, a spring 51 is inserted between the detection body 43 and the temperature detection means 52. The spring 51 abuts on the lower surface of the bowl 521 and the sensor base 42 and urges the temperature detection means 52 so that the temperature detection means 52 is in close contact with the pan 12. An electrical signal corresponding to the temperature of the pan 12 detected by the temperature detection means 52 is input to the control unit 14 via the lead wire 53 and the connector 54. The lead wire 53 is pulled out from the groove 424 of the sensor base 42.

  When there is no pan 12 in the storage unit 30, the upper surface of the flange 521 of the temperature detection means 52 is in contact with the lower surface of the flange 432 of the detection body 43. The upper surface of the temperature detecting means 52 is located higher than the upper surface of the flange 432.

  When the pot 12 is stored in the storage section 30, the bottom of the pot 12 first comes into contact with the temperature detection means 52, and finally comes into contact with the temperature detection means 52 and the detection body 43 (FIG. 1). Therefore, since the detection body 43 supports the pan 12 at the center, the pan 12 does not tilt. The load cell 41 detects and outputs the total weight of the pan 12, the food 19, the sensor base 42, the spring 51, the temperature detection means 52, and the detection body 43. The temperature detection means 52 sinks into the detection body 43 by the spring 51, and the upper surface thereof is in contact with the bottom of the pan 12 at the same height as the upper surface of the flange 432. The temperature detection means 52 contacts the bottom of the pan 12 with an appropriate pressure defined by the spring 51 without applying an excessive force.

  The pan detection means 16 is composed of a micro switch fixed to the base 21 (FIG. 1). When the pan 12 is stored in the storage unit 30, the bottom of the sensor base 42 comes into contact with the microswitch, and the pan detecting means 16 outputs an ON signal. The operation stroke of the micro switch is larger than the displacement amount of the sensor base 42 on which the pan 12 is placed. Thereby, even when the pan 12 is placed on the sensor base 42 and the micro switch is operated, the weight of the pan 12 supported by the micro switch is very small and does not affect the measurement value of the weight detection means 40. You may comprise so that a microswitch may not support the weight of the pan 12 more than fixed by driving a microswitch via an actuator (for example, the phosphor bronze board which has spring property).

  Electric signals from the temperature detecting means 52, the pot detecting means 16 and the weight detecting means 40 (load cell 41) are input to the control unit 14, respectively. And the control part 14 calculates the weight of the foodstuff 19 based on the output signal of the weight detection means 40 especially, and controls the electricity supply to the induction heating means 13 according to the weight of the foodstuff 19.

  As shown in FIGS. 3 and 4, three guide roller mounting portions 63 are configured at approximately three locations in the upper end opening of the upper frame 32, which is a position facing the upper portion of the side surface of the pan 12. A guide roller 70 is attached to the bearing portion 62 of the guide roller attachment portion 63 so as to be rotatable in the vertical direction about a shaft 71 that is held horizontally via a bearing 71 and a shaft 72.

  An upper frame cap 64 formed of a heat resistant resin is engaged with the guide roller mounting portion 63 by a claw portion 65. The bearing 71 is made of a slidable resin and rotates with respect to the shaft 72. The guide roller 70 is formed of rubber. The pan cross section 122 is a cross section of the pan 12 placed in the storage unit 30 without deviation at a height at which the guide roller 70 is provided. Here, the three guide rollers 70 are arranged so as to have a gap 69 with respect to the outer periphery of the pan section 122, that is, the side surface of the pan 12. The gap 69 is provided smaller than the gap 68 between the pan 12 and the storage portion 30, and when the pan 12 is biased or tilted, it comes into contact with the guide roller 70 before the storage portion 30. It has become.

The microcomputer mounted in the control unit 14 stores a pan 12 containing a maximum amount of rice and water in a predetermined state (when there is no pan 12 or when an empty pan 12 is stored). Output signal data (S1, S2, S3) of the load cell 41 at the time of When the magnitude of the output signal of the load cell 41 is S, the weight W of the food 19 in the pan 12 is
W = Wmax × (S−S2) / (S3−S2)
It becomes. However, Wmax is the maximum weight of the food 19, and the known amount (the maximum amount of rice and the pan 12 containing the rice and water (the food 19), the sensor base 42, the spring 51, the temperature detection means 52 and the detection. This is the total weight of the body 43 and a value corresponding to the output signal data S3 of the load cell 41). From this equation, the microcomputer calculates the weight of the cooked item 19 and estimates the amount of cooked rice.

  Here, according to FIG. 5, when determining the amount of rice cooking by the weight detection means 40 in this embodiment (FIGS. 5A and 5B), the amount of rice cooking is determined by the temperature rise gradient of the temperature detection means 52 during rice cooking. Will be described (FIGS. 5C and 5D).

  The cooking process is predominately chronologically pre-cooked, cooked, boiled, cooked, and steamed. In the pre-cooking step, the rice and water in the pan 12 are heated so that the temperature of the pan 12 becomes a temperature suitable for water absorption of rice (50 ° C.). Next, in the cooking step, the pan 12 is heated with a predetermined amount of heat until the temperature of the pan 12 reaches a predetermined value (100 ° C.). In the boiling maintenance step, the rice and water are heated until the water in the pan 12 is exhausted and the temperature of the pan 12 reaches a predetermined value exceeding 100 ° C. Finally, in the steaming process, heating (cooking) according to the amount of cooked rice and stopping of heating are repeated a plurality of times during a fixed time.

  In the pre-cooking process in the present embodiment, as shown in FIGS. 5 (a) and 5 (b), when cooking 1 go and 5 go, the bottom of the pan changes in temperature as shown by a solid line, The temperature change shown with a broken line is shown. FIGS. 5C and 5D show a case where the amount of cooked rice is determined based on the temperature rise gradient of the temperature detection means 52.

  When determining the amount of cooked rice based on the temperature rise gradient of the temperature detecting means 52, heating is performed until the temperature detected by the temperature detecting means 52 reaches a temperature suitable for water absorption (50 ° C.) regardless of the amount of the cooked food 19. Do. Thereafter, the temperature of the pan 12 is kept at 50 ° C. for a predetermined time (Ta), and the rice is absorbed. However, when the amount of cooked rice is large (FIG. 5 (d)), it takes time for the temperature of the whole cooked item 19 to reach 50 ° C., so the water absorption time at an appropriate temperature is insufficient. Therefore, the core remains in the rice.

  On the other hand, in the case of the present embodiment, the temperature at the time of water absorption (the temperature detected by the temperature detecting means 52) is changed according to the amount of the cooked food 19. For example, when the amount of cooked rice is 1 go, heating is performed until the temperature detected by the temperature detecting means 52 reaches 50 ° C. Then, the temperature of the pan 12 is kept at 50 ° C. for a predetermined time (Ta), and the rice is absorbed (FIG. 5A). When the amount of cooked rice is 5 go, heating is performed until the temperature detected by the temperature detecting means 52 reaches 60 ° C. And the temperature of the pan 12 is kept at 60 degreeC for predetermined time (Ta), and water is absorbed (FIG.5 (b)). Since the temperature of the central part of the cooked food 19 rises later than the outside temperature and reaches about 50 ° C., the rice can absorb water sufficiently.

  Thus, when determining the amount of rice cooking by the temperature rise gradient in the cooking process, regardless of the amount of the cooked item 19, the pan 12 is heated with a predetermined heating power (the energization rate and / or the energization amount of the induction heating means 13). Heat to a predetermined temperature (100 ° C.). Therefore, when the amount of cooked rice is small, the rice is boiled too quickly and only the surface of the rice is gelatinized, leaving the core remaining. However, in the case of the present embodiment, the heating power (the energization rate and / or the energization amount of the induction heating means 13) in the cooking process is changed according to the amount of rice cooked. That is, control is performed to weaken the thermal power as the amount of cooked rice is small so that the time required for the cooking process is constant regardless of the amount of cooked rice. Therefore, the amount of cooked rice is accurately calculated before the start of heating, and the thermal power control according to the amount of cooked rice is performed, so that delicious rice can always be cooked regardless of the amount of cooked rice. In addition, it is good also as a control method which changes the time of pre-cooking instead of the temperature at the time of pre-cooking according to the amount of rice cooking.

  Moreover, since the rice cooker of this Embodiment set it as the structure which provides the resin-made sensor stand 42 between the detection body 43 and the load cell 41, it is by the friction between the pan 12, the detection body 43, and the temperature detection means 52. The generated static electricity does not enter the weak circuit. Although the sensor base 42 is made of resin, it is not limited to this, and it is sufficient if it is made of an insulating material.

  Further, by providing the pad 55 between the base 21 and the main body 10, the strength of the main body 10 against an impact can be increased.

  The shape of the detection body 43 is not limited to that shown in FIG. 2, and may be any shape that contacts the bottom of the pan 12 when the pan 12 is stored in the storage unit 30. It is good also as a structure which provides the temperature detection means 52 in the outer side of the detection body 43 (for example, peripheral part of the bottom of the pan 12).

  As the weight detection element 41, only a piezoelectric element, a capacitance detection element, and a spring may be used. Preferably, the amount of displacement due to the weight of the pan 12 is very small (preferably the distance between the pan 12 and the induction heating means 13 does not change depending on the weight of the object to be heated), and the eddy current is caused by the leakage magnetic flux of the induction heating means 13. A sensing element (for example, a load cell or a piezoelectric element made of aluminum or an aluminum alloy) that does not cause a risk of temperature rise due to flow of the liquid is used. The weight detected by the weight detection element 41 when the pan 12 is stored in the storage unit 30 may include at least the weight of the pan 12 (the pan 12 and the cook 19 if there is the cook 19).

  Since the pan 12 has a gap 68 between the pan 12 and the storage portion 30 during storage, heat is hardly transmitted from the pan 12 to the storage portion 30. Therefore, the storage unit 30 (the coil base 31 and the upper frame 32) can be manufactured at low cost by resin molding.

  Preferably, the temperature detection means 52, the actuator of the weight detection element 41, and the pan detection means 16 (or the actuator) are arranged in this order from the top near the center of the rice cooker. The temperature detecting means 52 directly contacts the center of the bottom of the pan 12 and detects the temperature with high accuracy. The weight detection element 41 (or the sensor base 42 as its actuator) includes the pan 12, the temperature detection means 52, and the holding structure of the temperature detection means 52 (in this embodiment, the spring 51 and the detection body 43). A structure that receives the weight it contains. The weight detection element 41 detects the weight of the pan 12 and the food 19 with high accuracy. The pan detection means 16 can detect the presence or absence of the pan 12 based on the displacement of the sensor base 42.

  As shown in FIG. 1, the position of the weight detection element (load cell) 41 having a rectangular parallelepiped shape is slightly shifted from the center of the bottom of the pan 12 using the sensor base 42 (acting as an actuator of the weight detection element 41). By arranging the pan detection means (microswitch) 16 under the sensor base 42, the weight detection element (load cell) 41 and the pan detection means (microswitch) 16 can be juxtaposed on the base 21. Thereby, the attachment structure of the weight detection element (load cell) 41 and the pan detection means (microswitch) 16 can be simplified, and the height of the whole rice cooker can be suppressed.

  According to the rice cooker of the present embodiment, the detection of the total weight of the pot 12 and the food 19 put in the pot 12 and the detection of the presence or absence of the pot 12 are both small, light and inexpensive. This can be done at the approximate center of the outer bottom of the pan 12.

  Usually, the pan 12 has a flange 121, and the position of the pan 12 is stabilized by placing the flange 121 of the pan 12 on the upper surface circumference of the storage unit 30. However, in the rice cooker of this Embodiment which has the weight detection means 40, the detection body 43 becomes a structure which supports the whole weight of the pan 12, and the pan 12 is stably arrange | positioned by the pan bottom. In addition, since the pan 12 rotates the guide roller 70 only in the vertical direction, the pan 12 is smoothly stored. Further, the guide roller 70 is provided at three positions substantially evenly at positions facing the upper side of the pan 12. Therefore, the pan 12 is difficult to tilt. Further, since there is a gap 69 between the guide roller 70 and the pan 12, the three guide rollers 70 do not contact the pan 12 at the same time, and the pan 12 is not sandwiched by the guide roller 70. The weight of the object 19 is transmitted to the weight detection means 40 without being taken by the guide roller 70, and the weight of the pan 12 and the food 19 can be detected with high accuracy.

  In addition, when the user shakes or loosens the cooked rice, the pan 12 comes into contact with the guide roller 70 before coming into contact with the tilt storage unit 30. Since the guide roller 70 is formed of rubber, a frictional force is generated between the guide roller 70 and the pot abutting portion, and the movement of the pot 12 in the rotation direction is suppressed. It is easy to unravel.

(Embodiment 2)
FIG. 6 shows a main part of the rice cooker according to Embodiment 2 of the present invention. The same elements as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The rice cooker in the present embodiment is configured such that the curvature radius R2 of the guide roller 70 facing the pan is substantially equal to the curvature radius R2 of the opposing pan side surface.

  Thereby, when a user shakes or loosens the cooked rice, the pan 12 is tilted from the state of FIG. 6 (a) and abuts against the guide roller 70 as shown in FIG. 6 (b). Because it is substantially equivalent, the contact area is large, a large frictional force is generated compared to other shapes, and the movement of the pan 12 in the rotation direction is suppressed, so the pan is difficult to rotate and it is easy to loosen and loosen the rice Is.

(Embodiment 3)
FIG. 7 shows the main part of the rice cooker in Embodiment 3 of the present invention. The same elements as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In the rice cooker according to the present embodiment, the surface roughness of the pan facing surface of the guide roller 70 is substantially equal to the surface roughness of the facing pan side surface.

  Thus, when the user loosens or loosens the rice from the pan 12, the pan 12 contacts the tilt guide roller 70. Since the surface roughness of both the guide roller 70 and the pan 12 that are in contact with each other is substantially the same, the contact area becomes large as shown in FIG. Movement in the direction is further strongly suppressed. For this reason, the pan 12 is difficult to rotate, and it becomes easy to loosen or loosen the rice. FIG. 7B shows a case where the surface roughness of both the guide roller 70 and the pan 12 is different. In this case, the contact area is small.

(Embodiment 4)
FIG. 8 shows a main part of the rice cooker according to Embodiment 4 of the present invention. The same elements as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In the rice cooker in the present embodiment, an internal space 73 is provided between the bearing 71 member that supports the guide roller 70 and the guide roller 70. The internal space 73 may be formed as long as any one of the guide roller 70 and the bearing 71 member is a convex portion and the other is a concave portion to form a space when the two are combined.

  Thus, when the user loosens or loosens the rice from the pan 12, the pan 12 is tilted and comes into contact with the guide roller 70 as shown in FIG. Since the internal space 73 exists between the guide roller 70 and the bearing 71 member and the guide roller 70 is made of rubber, the guide roller 70 is deformed along the side surface shape of the pan 12 from the state of FIG. The contact area is increased, a large frictional force is generated, the movement of the pan 12 in the rotation direction is further strongly suppressed, the pan is difficult to rotate, and the rice is easily loosened or loosened.

  As described above, the rice cooker according to the present invention can detect the weight of the food with high accuracy and can cook delicious rice by energizing control to the induction heating means according to the weight of the food. It is useful as an induction heating type rice cooker for business use or business use.

The side view which notched and showed the rice cooker in Embodiment 1-4 of this invention partially notched Exploded perspective view of the weight detection means of the rice cooker Top view of the rice cooker The exploded perspective view of the guide roller part of the rice cooker Temperature characteristic diagram explaining the temperature of the pot bottom and the center of the cooked food at the time of 1 go cooking and 5 go cooking of the rice cooker Operation | movement explanatory drawing which showed the principal part structure of the rice cooker in Embodiment 2 of this invention. Operation | movement explanatory drawing which showed the principal part structure of the rice cooker in Embodiment 3 of this invention. Operation | movement explanatory drawing which showed the principal part structure of the rice cooker in Embodiment 4 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Main body 12 Pan 13 Induction heating means 14 Control part 19 Cooked food 20 Lid 30 Storage part 40 Weight detection means 41 Load cell (weight detection element)
52 Temperature detection means 68, 69 Clearance 70 Guide roller 71 Bearing 72 Shaft 73 Internal space

Claims (4)

A main body having an open top surface, a pan that is detachably stored in the storage portion of the main body, a lid that covers the storage portion so as to be openable and closable, induction heating means that induction-heats the pan, and the temperature of the pan is detected. Temperature detecting means, a weight detecting element attached to the storage section, attached to the weight detecting element, provided outside the temperature detecting means and supporting the total weight of the pan separately from the temperature detecting means. A cylindrical detection body, a weight detection means for detecting a total weight of the pan, the cooked food in the pan, the temperature detection means, and the detection body by the weight detection element via the detection body; and the weight detection A controller that calculates the weight of the cooked food based on the output signal of the means, controls the energization of the induction heating means according to the weight of the cooked food, and a plurality of guides equipped with a predetermined gap with respect to the side surface of the pan Cooking with a roller Vessel. The rice cooker according to claim 1, wherein the curvature radius of the guide roller facing surface of the guide roller is substantially equal to the curvature radius of the facing surface of the facing pan. The rice cooker according to claim 1 or 2, wherein the surface roughness of the opposing surface of the pan of the guide roller is substantially equal to the surface roughness of the opposing side surface of the pan. The rice cooker according to any one of claims 1 to 3, wherein an internal space is provided between a bearing member supporting the guide roller and the guide roller.

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