JP6800042B2 - rice cooker - Google Patents

Description

The present invention relates to a rice cooker in which a space is formed between an outer wall of the main body and an inner wall facing the inner pot in the main body.

In a conventional rice cooker, a heat insulating material is placed between the outer wall of the main body and the inner wall facing the inner pot in the main body around the waist of the main body, or a space for heat insulation is formed (for example,). See Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-129613

On the other hand, in a rice cooker, it is necessary to cool a coil or a control unit, which is a heating means arranged in the lower part of the main body. For this reason, a cooling air passage that takes in outside air, cools the coil, the control unit, and the like and discharges the outside air is formed in the lower part of the main body.

The cooling air flowing through the cooling air passage is the place where the heat insulating material around the waist of the main body is arranged or the space for heat insulation around the cooling air passage between the outer wall of the main body and the inner wall facing the inner pot in the main body. In the case of flowing into the rice cooker, there is a problem that the waist circumference of the main body is cooled and the heat retention of the rice cooker is impaired.

The present invention is for solving the above-mentioned problems, and an object of the present invention is to obtain a rice cooker in which the waistline of the main body is hard to be cooled and the heat retention is improved.

The rice cooker of the present invention is provided with a main body having an open upper part, an inner pot having an open upper part that is housed so as to be freely taken in and out of the main body from the opening of the main body, and an inner pot rotatably provided in the main body. A lid body covering the opening of the main body, a heating means provided in the main body for heating the lower portion of the inner pot, and a control unit for controlling the heating means are provided, and the outer wall of the main body and the inside of the main body are provided. A partition portion for partitioning the space formed between the inner wall and the inner wall facing the inner pot is provided, and the upper space partitioned by the partition portion in the space becomes a space for heat insulation, and the partition portion in the space serves as a space for heat insulation. was Ri is lower space Do the cooling air path for cooling the heating means and the control unit, the space for the thermal insulation, thermal insulation material is arranged, the partition portion is a portion of the heat insulating material ..

According to the rice cooker according to the present invention, a partition portion for partitioning the space formed between the outer wall of the main body and the inner wall facing the inner pot in the main body is provided, and the upper space partitioned by the partition portion in the space is provided. It becomes a space for heat insulation, and the lower space partitioned by the partition portion in the space serves as a cooling air passage for cooling the heating means and the control unit. As a result, a space for heat insulation is formed in the upper space around the waist of the main body, which is partitioned by a partition and the air flow is suppressed. Therefore, it is difficult for the waistline of the main body to be cooled, and the heat retention can be improved.

It is an external perspective view which shows the rice cooker which concerns on Embodiment 1 of this invention. It is a schematic block diagram which shows the rice cooker which concerns on Embodiment 1 of this invention in the AA cross section of FIG. It is a schematic block diagram which shows the rice cooker which concerns on Embodiment 1 of this invention in the BB cross section of FIG. It is a perspective view which shows the heat insulating material of the rice cooker which concerns on Embodiment 1 of this invention. It is a top view which shows the heat insulating material of the rice cooker which concerns on Embodiment 1 of this invention. It is a side view which shows the heat insulating material of the rice cooker which concerns on Embodiment 1 of this invention. It is a bottom view which shows the heat insulating material of the rice cooker which concerns on Embodiment 1 of this invention. It is a schematic block diagram which shows the relationship between the heat insulating material of the rice cooker which concerns on Embodiment 1 of this invention, and a screw boss from the bottom. It is a perspective view which shows the other example 1 of the heat insulating material of the rice cooker which concerns on Embodiment 1 of this invention. It is a perspective view which shows the other example 2 of the heat insulating material of the rice cooker which concerns on Embodiment 1 of this invention. It is a perspective view which shows the other example 3 of the heat insulating material of the rice cooker which concerns on Embodiment 1 of this invention. It is a parts development drawing which shows the rice cooker which concerns on Embodiment 2 of this invention. It is a top view which shows the shield body of the rice cooker which concerns on Embodiment 2 of this invention. It is a perspective view which shows the shield body of the rice cooker which concerns on Embodiment 2 of this invention as seen from the bottom. It is a schematic block diagram which shows the relationship between the shield body of the rice cooker which concerns on Embodiment 2 of this invention, and a screw boss from the bottom.

An embodiment of the rice cooker according to the present invention will be described below. The form of the drawings is an example, and does not limit the present invention. In addition, those having the same reference numerals in the respective figures are the same or equivalent thereof, which are common to the entire text of the specification. Further, in the drawings below, the relationship between the sizes of the constituent members may differ from the actual one.

Embodiment 1.
<Overall configuration of rice cooker 1>
FIG. 1 is an external perspective view showing a rice cooker 1 according to a first embodiment of the present invention. FIG. 2 is a schematic configuration diagram showing the rice cooker 1 according to the first embodiment of the present invention in the AA cross section of FIG. FIG. 3 is a schematic configuration diagram showing the rice cooker 1 according to the first embodiment of the present invention in the BB cross section of FIG.

As shown in FIGS. 1 to 3, the rice cooker 1 has a cylindrical waist circumference. The rice cooker 1 includes a main body 2 and a lid body 3. The main body 2 and the lid 3 are each resin-molded using a resin material suitable for the intended use. The main body 2 and the lid 3 may be formed without using a resin material, or a metal plate may be processed on the exterior. The main body 2 has an upper opening. The lid 3 is rotatably provided on the main body 2 and covers the opening of the inner pot 4.

As shown in FIG. 1, the lid body 3 has a lid upper surface cover 5. The lid upper surface cover 5 is provided with a transparent display window 7 on the front side of the lid 3 so that the display contents of the display panel 6 for displaying the operation result or the operation status can be visually recognized. As shown in FIGS. 2 and 3, an internal space of the lid 3 is formed below the lid top cover 5. The internal space is the substrate chamber 8.

As shown in FIG. 1, around the display window 7, an operation unit 9 having various operation keys for operating the rice cooker 1 and each having functions such as rice cooking, heat retention, and reservation is provided. The operation unit 9 can be operated while checking the display contents of the display panel 6 that can be seen from the display window 7.

As shown in FIGS. 2 and 3, the operation display board 10 is housed in the board chamber 8. The operation display board 10 is equipped with a switch (not shown) for inputting operation keys of the operation unit 9, and the above-mentioned display panel 6 held by a holding member made of heat-resistant resin. Further, the operation display board 10 is electrically connected to the control board 11 in the main body 2 via a flat cable (not shown).

As shown in FIG. 1, an exhaust port 12 for discharging steam generated during rice cooking from the rice cooker 1 is provided near the rear of the lid 3. The rice cooker 1 may be of a type that does not have an exhaust port 12.

As shown in FIGS. 1 to 3, the lid 3 is formed by engaging an engaging portion (not shown) provided on the lid 3 and a locking portion (not shown) provided on the main body 2. The upper surface of 2 is closed. By pushing the unlocking button 13 provided on the front side of the main body 2, the engaging portion and the locking portion are disengaged. As a result, the lid body 3 is brought to a predetermined position by an urging means (not shown) that applies an urging force in the opening direction to the lid body 3 around the rotation shaft 14 provided on the rear side of the main body 2. It rotates to open the inside of the main body 2.

As shown in FIGS. 2 and 3, the main body 2 has an upper opening. In the main body 2, an inner pot 4 for accommodating water and rice, which are rice to be cooked, is housed in the main body 2 so as to be freely taken in and out.

The inner pot 4 is provided with a flange portion 4a on the outer peripheral side wall, which protrudes outward in an annular shape at a position below the upper end of the inner pot 4 and higher than half of the total height of the inner pot 4. .. The flange portion 4a is sandwiched between a main body upper member 15 and a seal packing holding member (not shown), and the lower portion is placed on the main body side seal packing 16 provided on the entire circumference of the upper surface opening of the main body 2 and stored in the main body 2. Will be done. In the state where the inner pot 4 is housed in the main body 2 in this way, the portion from the flange portion 4a of the inner pot 4 to the upper end of the inner pot protrudes from the upper surface opening of the main body 2.

The inner pot 4 has a thick wall thickness from the periphery where the collar portion 4a protrudes outward to the upper end of the inner pot 4. When the inner pot 4 is thick in this way, the inner pot 4 easily retains heat, and the strength of the peripheral portion where the collar portion 4a protrudes outward increases. Here, since the inner pot 4 is made of a fired carbon material (carbon), it has a structure with increased strength.

The material of the inner pot 4 may be made of soil, metal, or the like, depending on the intended use, in addition to the carbon material (carbon). For example, if the heating means of the rice cooker 1 is by induction heating, carbon material (carbon) which is a magnetic material or stainless steel which is a metal having magnetism can be selected. Since the inner pot 4 made of metal is not damaged by a slight impact, the inner pot 4 may be formed with a uniform wall thickness.

An inner lid 17 that is removable from the lid 3 is provided on the surface of the lid 3 that faces the upper end of the inner pot 4. The lid 3 above the inner lid 17 is provided with an inner lid heater (not shown) that suppresses dew condensation on the inner lid 17. Further, a seal packing 18 is provided on the entire outer circumference of the inner lid 17. As shown in FIGS. 2 and 3, when the lid 3 closes the opening of the main body 2, the upper end of the inner pot 4 and the seal packing 18 come into contact with each other over the entire circumference to enter the seal state.

As shown in FIGS. 2 and 3, the rice cooker 1 is provided in the main body 2 and includes an induction heating coil 19 which is a heating means for heating the lower part of the inner pot 4. The induction heating coil 19 is arranged at the lower part in the main body 2. The induction heating coil 19 cooks the stored rice and keeps the cooked rice warm. Here, the induction heating coil 19 is mentioned as the heating means. However, it is not limited to this. The heating means may be, for example, a radiant heating means such as a sheathed heater.

As shown in FIG. 2, the rice cooker 1 includes a control board 11 as a control unit for controlling the induction heating coil 19. The control board 11 is provided upright in the lower space 20 behind the inner pot 4 housed in the main body 2. The control board 11 is provided with a heat sink 21 for heat dissipation that cools the control board 11 projecting to the rear of the main body 2.

As shown in FIG. 2, the rice cooker 1 includes an induction heating coil 19 and a cooling fan 22 that generates cooling air for cooling the control substrate 11. The cooling fan 22 is arranged below the control board 11 provided upright in the lower space 20 behind the inner pot 4 housed in the main body 2. The cooling fan 22 is controlled by the control board 11 and is rotationally driven to take in outside air from the suction port 24 opened in the lower wall 23 of the main body 2 and move upward toward the control board 11 housed in the box body. Let the cooling air flow. The cooling air that cools the control board 11 cools the heat sink 21 of the control board 11, passes through the air passage 25 on the front side on the back side of the control board 11, and is inside the main body 2 in which the induction heating coil 19 is arranged. It flows into the lower and central parts. The cooling air for cooling the induction heating coil 19 flows in the lower space 20 below the induction heating coil 19 toward the front of the main body 2 to cool the induction heating coil 19. The cooling air that cools the induction heating coil 19 flows toward the front of the main body 2 as it is, and is discharged from the discharge port 27 opened at the boundary between the front side wall 26 of the main body 2 and the lower wall 23.

<Space composition inside rice cooker 1>
As shown in FIGS. 2 and 3, a space 30 is formed in the rice cooker 1 between the outer wall 28 of the main body 2 and the inner wall 29 facing the inner pot 4 in the main body 2. The space 30 is formed by being connected to a side portion 30a around the waist of the main body 2 and a lower portion 30b below the induction heating coil 19 arranged in the main body 2. In the space 30, the control board 11 and the cooling fan 22 housed in the box are arranged at the rear part of the main body 2 of the rice cooker 1, and the cooling air passage 31 is configured up to the upper part of the main body 2. Therefore, the rear part of the main body 2 Is not formed in. That is, the space 30 has a C-shape in a plan view extending to the front portion of the main body 2 and its left and right side portions. The inner wall 29 facing the inner pot 4 in the main body 2 has a cylindrical portion 29c extending downward at the lower end of the side wall 29a in front of the lower wall 29b connected to the side wall 29a in a curved shape. ..

The space 30 is divided into an upper space 32 and a lower space 20. The partition portion that partitions the upper space 32 and the lower space 20 is composed of a folded-back portion 34 that is a part of the heat insulating material 33 arranged in the upper space 32. The folded-back portion 34 of the heat insulating material 33 is arranged so as to come into contact with the outer peripheral surface of the cylindrical portion 29c on the inner wall 29 of the main body 2. Then, the upper space 32 partitioned by a part of the heat insulating material 33 having the folded-back portion 34 in the space 30 becomes a space for heat insulating. The lower space 20 partitioned by a part of the heat insulating material 33 having the folded-back portion 34 in the space 30 serves as a cooling air passage 31 for cooling the induction heating coil 19 and the control board 11.

A heat insulating material 33 is arranged in the space for heat insulation, which is the upper space 32 around the waist of the main body 2, so that the waist of the main body 2 is less likely to be cooled.

As described above, the cooling air passage 31, which is the lower space 20 below the induction heating coil 19 arranged in the main body 2, takes in outside air from the suction port 24 by rotationally driving the cooling fan 22, and is a control board. It is a space for discharging the cooling air that has cooled the 11 and the induction heating coil 19 from the discharge port 27.

<Structure of heat insulating material 33>
FIG. 4 is a perspective view showing a heat insulating material 33 of the rice cooker 1 according to the first embodiment of the present invention. FIG. 5 is a top view showing a heat insulating material 33 of the rice cooker 1 according to the first embodiment of the present invention. FIG. 6 is a side view showing the heat insulating material 33 of the rice cooker 1 according to the first embodiment of the present invention. FIG. 7 is a bottom view showing a heat insulating material 33 of the rice cooker 1 according to the first embodiment of the present invention. FIG. 8 is a schematic configuration diagram showing the relationship between the heat insulating material 33 and the screw boss 35 of the rice cooker 1 according to the first embodiment of the present invention as viewed from below.

As shown in FIGS. 4 to 7, the heat insulating material 33 is a folded portion as a partition portion that separates the main portion 33a arranged in the space for heat insulation, which is the upper space 32, and the upper space 32 and the lower space 20. 34 and. The heat insulating material 33 is in the form of one sheet. As the heat insulating material 33, various materials such as expanded polystyrene, glass wool, and rock wool are used.

The main portion 33a of the heat insulating material 33 has a long elongated shape having a C shape in a plan view excluding the rear part of the waist circumference of the main body 2. As shown in FIGS. 2 and 3, the main portion 33a of the heat insulating material 33 is arranged in the upper space 32 around the waist of the main body 2 along the inside of the outer wall 28 of the main body 2. Since the waistline of the main body 2 has a barrel-shaped cylindrical shape, when the main part 33a of the heat insulating material 33 is inserted into the upper space 32 and the main part 33a of the heat insulating material 33 is arranged around the waistline, the main body 2 There is a portion that becomes the remaining folded-back portion 34 that protrudes below. The portion to be the folded-back portion 34 is inclined toward the center side of the main body 2. Therefore, the folded-back portion 34 is easy to be folded back toward the inner wall 29 side of the main body 2. As shown in FIGS. 4 to 7, the main portion 33a of the heat insulating material 33 has a recess 33b located at the center in the longitudinal direction, which is arranged so as to wrap around the waist circumference of the main body 2. Here, the main portion 33a of the heat insulating material 33 has a recess 33b. However, it is not limited to this. The main portion 33a of the heat insulating material 33 may have, for example, a convex portion instead of the concave portion 33b. When the heat insulating material 33 has the concave or convex portions as described above, the concave or convex portion can also be formed in the process of forming the heat insulating material 33, and the heat insulating material 33 can be easily manufactured.

The folded-back portion 34 of the heat insulating material 33 is a portion of one sheet-shaped heat insulating material 33 that is formed so as to protrude downward from the main portion 33a. The folded-back portion 34 of the heat insulating material 33 is divided into three in the horizontal direction. As a result, the manufacturing worker can easily fold the folded-back portion 34. As shown in FIG. 8, the divided portion of the folded-back portion 34 is set at the portion where the screw boss 35 is provided for fixing the main body 2. As a result, the manufacturing worker can perform the work of fixing the screws of the main body 2 to the screw boss 35 after the folded-back portion 34 is folded back and arranged. Since the folded-back portion 34 of the heat insulating material 33 is divided into three, the upper space 32 and the lower space 20 communicate with each other. However, since the communication gap is narrow, the cooling air from the lower space 20 serving as the cooling air passage 31 enters the space for heat insulation which is the upper space 32, and the movement of air in the upper space 32 is suppressed. ..

<Other example 1 of the configuration of the heat insulating material 33>
FIG. 9 is a perspective view showing another example 1 of the heat insulating material 33 of the rice cooker 1 according to the first embodiment of the present invention. Here, another example 1 of the heat insulating material 33 of the rice cooker 1 according to the first embodiment will be described. Since the other configurations are the same as those in the above embodiment, the description thereof will be omitted. As shown in FIG. 9, the folded-back portion 34 may be folded back toward the outer wall 28 side of the main body 2. As a result, the main portion 33a of the heat insulating material 33 is arranged on the inner wall 29 side of the main body 2 in the space for heat insulation which is the upper space 32, and the position of the main portion 33a approaches the inner pot 4 with respect to the inner pot 4. Heat retention can be improved.

<Other example 2 of the configuration of the heat insulating material 33>
FIG. 10 is a perspective view showing another example 2 of the heat insulating material 33 of the rice cooker 1 according to the first embodiment of the present invention. Here, another example 2 of the heat insulating material 33 of the rice cooker 1 according to the first embodiment will be described. Since the other configurations are the same as those in the above embodiment, the description thereof will be omitted. As shown in FIG. 10, the heat insulating material 33 is in the form of a single sheet. The portion to be the partition portion is a thick portion 33c thicker than the other portions so as to partition the space for heat insulation, which is the upper space 32 of the heat insulating material 33, and the cooling air passage 31. As a result, the upper space 32 and the lower space 20 are separated only by the manufacturing worker arranging the heat insulating material 33 in the space for heat insulation which is the upper space 32.

<Other example 3 of the configuration of the heat insulating material 33>
FIG. 11 is a perspective view showing another example 3 of the heat insulating material 33 of the rice cooker 1 according to the first embodiment of the present invention. Here, another example 3 of the heat insulating material 33 of the rice cooker 1 according to the first embodiment will be described. Since the other configurations are the same as those in the above embodiment, the description thereof will be omitted. As shown in FIG. 11, the heat insulating material 33 is two sheet-shaped members 36 and 37. That is, the heat insulating material 33 is composed of sheet-shaped members 36 and 37 in which the main portion 33a and the partition portion are separate. The sheet-shaped member 36 of the partition portion is doubly stacked after the sheet-shaped member 37 of the main portion 33a is arranged so as to partition the space for heat insulation in the heat insulating material 33 and the cooling air passage 31. As a result, after the sheet-shaped member 37 of the main portion 33a of the heat insulating material 33 is arranged, the manufacturing worker is required to provide the upper space 32 in which the sheet-shaped member 37 of the main portion 33a of the heat insulating material 33 is arranged. You can do other work in the gaps in the space. Further, after the manufacturing worker performs another work, the sheet-like member 36 of the partition portion of the heat insulating material 33 may be overlapped with the sheet-like member 37 of the main portion 33a to fill the gap.

<Effect of Embodiment 1>
According to the first embodiment, the rice cooker 1 includes a main body 2 having an upper opening. The rice cooker 1 includes an inner pot 4 having an opening at the top, which is stored freely in and out of the main body 2 through the opening of the main body 2. The rice cooker 1 is rotatably provided on the main body 2 and includes a lid 3 that covers the opening of the inner pot 4. The rice cooker 1 is provided in the main body 2 and includes an induction heating coil 19 for heating the lower part of the inner pot 4. The rice cooker 1 includes a control board 11 that controls the induction heating coil 19. A folded portion 34 as a partition portion, a thick portion 33c, or a sheet-like member 36 of the partition portion forming a space 30 formed between the outer wall 28 of the main body 2 and the inner wall 29 facing the inner pot 4 in the main body 2 is provided. It is provided. The upper space 32 partitioned by the partition portion in the space 30 serves as a space for heat insulation. The lower space 20 partitioned by the partition portion in the space 30 serves as a cooling air passage 31 for cooling the induction heating coil 19 and the control board 11.

According to this configuration, the upper space 32 and the lower space 20 are partitioned by a partition portion. As a result, a space for heat insulation is formed in the upper space 32, which is the waistline of the main body 2, by being partitioned by a partition portion and suppressing the flow of air. Further, the lower space 20 becomes a cooling air passage 31. Therefore, due to the presence of the partition portion, the space for heat insulation and the cooling air passage 31 can efficiently maintain their respective performances. Therefore, it is difficult for the waistline of the main body 2 to be cooled, and the heat retention can be improved.

According to the first embodiment, the heat insulating material 33 is arranged in the space for heat insulating. The partition portion is a part of the heat insulating material 33.

According to this configuration, the heat insulating material 33 is arranged in the space for heat insulation, which is the upper space 32, the waist circumference of the main body 2 is less likely to be cooled, and the heat retention is further improved. Further, since the partition portion is a part of the heat insulating material 33, the number of parts can be reduced and the cost can be reduced. The partition portion that is a part of the heat insulating material 33 may be composed of not only the integrated heat insulating material 33 but also a plurality of heat insulating materials 33.

According to the first embodiment, the heat insulating material 33 is in the form of one sheet. The partition portion is a folded-back portion 34 that is folded back so as to partition the space for heat insulation in the heat insulating material 33 and the cooling air passage 31.

According to this configuration, since the partition portion is a folded-back portion 34 obtained by folding back one sheet-shaped heat insulating material 33, the partition portion can be formed by the manufacturing worker folding back the heat insulating material 33, and the work efficiency can be improved. ..

According to the first embodiment, the folded-back portion 34 is folded back toward the inner wall 29 side of the main body 2.

According to this configuration, when the heat insulating material 33 is arranged around the waist, the heat insulating material 33 is tilted toward the center side of the main body 2, so that the manufacturing worker can easily turn back the heat insulating material 33, and the work efficiency can be improved.

According to the first embodiment, the folded-back portion 34 is folded back toward the outer wall 28 side of the main body 2.

According to this configuration, the main portion 33a of the heat insulating material 33 is arranged on the inner wall 29 side of the main body 2 in the space for heat insulation which is the upper space 32, and the heat retention property for the inner pot 4 can be improved.

According to the first embodiment, the heat insulating material 33 is in the form of one sheet. The partition portion is a thick portion 33c having a thickness thicker than other portions so as to partition the space for heat insulation in the heat insulating material 33 and the cooling air passage 31.

According to this configuration, the partition portion can be formed by the manufacturing worker arranging the heat insulating material 33 in the space for heat insulation which is the upper space 32, and the work efficiency can be improved.

According to the first embodiment, the heat insulating material 33 is two sheet-shaped members 36 and 37. The sheet-like member 36 of the partition portion is doubly stacked so as to partition the space for heat insulation in the heat insulating material 33 and the cooling air passage 31.

According to this configuration, after the sheet-shaped member 37 of the main portion 33a of the heat insulating material 33 is arranged, the manufacturing worker is the heat insulating material which is the upper space 32 in which the sheet-shaped member 37 of the main portion 33a of the heat insulating material 33 is arranged. It is possible to perform another work in the gap of the space for the work, and the work efficiency can be improved. Further, after the manufacturing worker performs another work, the sheet-like members 36 of the partition portion of the heat insulating material 33 may be overlapped to fill the gap, and the work efficiency can be improved. The heat insulating material 33 may be not only the two sheet-shaped members 36 and 37 but also a plurality of three or more sheets. Even in that case, the heat insulating material 33 may be stacked in multiple layers to partition the space for heat insulating and the cooling air passage 31.

According to the first embodiment, the heat insulating material 33 is arranged so as to wrap around the waistline of the main body 2 and has a recess 33b located at the center in the longitudinal direction.

According to this configuration, the recess 33b serves as a central mark when the heat insulating material 33 wraps around the waistline of the main body 2 and is arranged, so that the manufacturing worker can easily arrange the heat insulating material 33 evenly and the work efficiency is improved. it can.

According to the first embodiment, the partition portion is divided into three parts.

According to this configuration, the manufacturing worker can easily fold the folded-back portion 34 of the heat insulating material 33 as the partition portion, and the work efficiency can be improved. Further, when the partition portion is the thick portion 33c, the thick portion 33c can be easily embedded and the work efficiency can be improved. Further, when the partition portion is a large number of sheet-shaped members 36, it is easy to insert the partition portion into the narrow gap of the sheet-shaped member 36, and the work efficiency can be improved. Further, for example, even if the main body shape is quadrangular in a plan view, the partition portion can be arranged without difficulty by the manufacturing worker by dividing the main body 2 into three according to the three quadrangular sides of the main body 2. Further, by setting the partition portion of the partition portion at the place where the screw boss 35 or the like is provided for fixing the main body 2, the screw fixing of the main body 2 to the screw boss 35 or the like after the manufacturing worker arranges the partition portion, etc. Work can be performed and work efficiency can be improved. The partition portion may be divided into a plurality of partitions, and the number of partitions is not limited.

Embodiment 2.
<Structure of shield 38>
FIG. 12 is a component development view showing the rice cooker 1 according to the second embodiment of the present invention. FIG. 13 is a top view showing a shield 38 of the rice cooker 1 according to the second embodiment of the present invention. FIG. 14 is a perspective view showing the shield 38 of the rice cooker 1 according to the second embodiment of the present invention as viewed from below. FIG. 15 is a schematic configuration diagram showing the relationship between the shield 38 and the screw boss 35 of the rice cooker 1 according to the second embodiment of the present invention as viewed from below. In the second embodiment, only the feature portion will be described. Since other configurations are the same as those in the above embodiment, the description thereof will be omitted.

As shown in FIG. 12, the space 30 is divided into an upper space 32 and a lower space 20 by a shielding body 38 as a partition portion. The shield 38 may have a shape that completely partitions the C-shaped space 30 vertically in a plan view. As shown in FIGS. 12 and 13, the shield 38 is a C-shaped plate-shaped member having a thin thickness in a plan view. The shield 38 is not limited to the plate-shaped member. The shield 38 may be a thick member as long as the upper space 32 and the lower space 20 are partitioned. The shield 38 may be configured not only as a single body but also as a combination of a plurality of members. The shield 38 is arranged, for example, in a region where the folded portion 34 of the heat insulating material 33 shown in FIGS. 2 and 3 is in contact with the outer peripheral surface of the cylindrical portion 29c on the inner wall 29 of the main body 2.

The shield 38 is made of resin. As a result, the shield 38 is easily formed. Further, since the thermal conductivity of the resin is low, the heat insulating effect of the space for heat insulation, which is the upper space 32, can be maintained.

The shield 38 may be made of metal. As a result, the shield 38 is easily formed. Further, the metal shield 38 can prevent noise peculiar to the IH rice cooker. Further, the shield 38 may be formed of a material other than resin or metal.

As shown in FIG. 12, the heat insulating material 33 is arranged in the space for heat insulation, which is the upper space 32 partitioned by the shield 38. The heat insulating material 33 has, for example, a shape corresponding to the main portion 33a of the heat insulating material 33 of the first embodiment. As a result, the heat insulating material 33 is arranged in the space for heat insulation, which is the upper space 32, and the waist circumference of the main body 2 is less likely to be cooled. The heat insulating material 33 is arranged in the space 30 before the shield 38 is arranged.

As shown in FIG. 14, the shield 38 has ribs 39 protruding from the cooling air passage 31 which is the lower space 20 on the lower surface. The rib 39 has a function of guiding air that protrudes into the cooling air passage 31 and is generated by the cooling fan 22 to guide the cooling air flowing through the cooling air passage 31 to be discharged from the discharge port 27. In the second embodiment, the rib 39 guides the cooling air from the rear to the front. In the following description, the rib 39 will be referred to as a wind guide rib 39. The air guide rib 39 extends in the front-rear direction so that the central portion thereof serves as the cooling air passage 31 of the induction heating coil 19 in the left-right direction. As a result, the air guide rib 39 can guide the cooling air flowing through the cooling air passage 31, and the cooling air is prevented from diffusing. In the second embodiment, the air guide rib 39 is provided so as to extend in the front-rear direction so as to guide the cooling air from the rear to the front from the arrangement of the cooling fan 22 and the discharge port 27. However, the air guide rib may be provided so as to guide the cooling air from the cooling fan 22 to the discharge port 27, and is not limited to being provided so as to extend in the front-rear direction.

As shown in FIGS. 12 to 15, the shield 38 is formed with a screw mounting hole 40 that vertically overlaps a portion where the screw boss 35 is provided for fixing the main body 2. As a result, the manufacturing worker can perform the work of fixing the screws of the main body 2 to the screw boss 35 after arranging the shield 38. Since the screw mounting hole 40 is open, the upper space 32 and the lower space 20 communicate with each other. However, since the communication gap is narrow, the cooling air from the lower space 20 serving as the cooling air passage 31 enters the space for heat insulation which is the upper space 32, and the movement of air in the upper space 32 is suppressed. ..

<Effect of Embodiment 2>
According to the second embodiment, the partition portion is a shield 38 that partitions the space for heat insulation and the cooling air passage 31.

According to this configuration, the partition portion can be easily configured.

According to the second embodiment, the heat insulating material 33 is arranged in the space for heat insulating.

According to this configuration, the heat insulating material 33 is arranged in the space for heat insulation, which is the upper space 32, the waist circumference of the main body 2 is less likely to be cooled, and the heat retention is further improved.

According to the second embodiment, the shield 38 has a wind guide rib 39 protruding into the cooling air passage 31. The air guide rib 39 has a function of guiding air that protrudes into the cooling air passage 31 and is generated by the cooling fan 22 to guide the cooling air flowing through the cooling air passage 31 to be discharged from the discharge port 27.

According to this configuration, the air guide rib 39 can guide the cooling air flowing through the cooling air passage 31, and the cooling effect can be improved.

According to the second embodiment, the shield 38 is made of resin.

According to this configuration, the shield 38 is easily formed. Further, since the thermal conductivity of the resin is low, the heat insulating effect of the space for heat insulation, which is the upper space 32, can be maintained.

According to the second embodiment, the shield 38 is made of metal.

According to this configuration, the shield 38 is easily formed. Further, the metal shield 38 can prevent noise peculiar to the IH rice cooker.

In the above embodiment, the partition portion is a part of the heat insulating material 33 and the shield 38. However, it is not limited to this. The partition portion may be provided by forming a portion that partitions the upper space 32 and the lower space 20 with existing parts of the main body 2, for example, by ribs or the like.

It should be noted that each of the embodiments disclosed this time is an example in all respects and is not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1 Rice cooker, 2 main body, 3 lid, 4 inner pot, 4a flange, 5 lid top cover, 6 display panel, 7 display window, 8 board room, 9 operation unit, 10 operation display board, 11 control board, 12 Exhaust port, 13 Unlock button, 14 Rotating shaft, 15 Main body upper member, 16 Main body side seal packing, 17 Inner lid, 18 Seal packing, 19 Inductive heating coil, 20 Lower space, 21 Heat sink, 22 Cooling fan, 23 Lower wall, 24 suction port, 25 air passage, 26 front side wall, 27 outlet, 28 outer wall, 29 inner wall, 29a side wall, 29b lower wall, 29c cylindrical part, 30 space, 30a side part, 30b lower part, 31 cooling air passage , 32 Upper space, 33 Insulation material, 33a Main part, 33b Recessed part, 33c Thick part, 34 Folded part, 35 Screw boss, 36 Sheet-like member, 37 Sheet-like member, 38 Shield, 39 Rib (wind guide rib), 40 screw mounting holes.

Claims (8)

The main body with an open top and
An inner pot with an open upper part that is stored freely in and out of the main body from the opening of the main body,
A lid rotatably provided on the main body and covering the opening of the inner pot,
A heating means provided in the main body and heating the lower part of the inner pot,
A control unit that controls the heating means,
With
A partition portion for partitioning a space formed between the outer wall of the main body and the inner wall of the main body facing the inner pot is provided.
The upper space partitioned by the partition in the space becomes a space for heat insulation.
Ri Do the cooling wind passage lower space partitioned by the partition portion in the space to cool the heating means and the control unit,
A heat insulating material is arranged in the space for heat insulating.
The partition portion is a rice cooker that is a part of the heat insulating material . The heat insulating material is in the form of a single sheet.
The rice cooker according to claim 1 , wherein the partition portion is a folded portion that is folded back so as to partition the space for heat insulation in the heat insulating material and the cooling air passage. The rice cooker according to claim 2 , wherein the folded portion is folded back toward the inner wall side of the main body. The rice cooker according to claim 2 , wherein the folded portion is folded back toward the outer wall side of the main body. The heat insulating material is in the form of a single sheet.
The rice cooker according to claim 1 , wherein the partition portion is a thick portion having a thickness thicker than other portions so as to partition the space for heat insulation in the heat insulating material and the cooling air passage. The heat insulating material is a plurality of sheet-like members.
The rice cooker according to claim 1 , wherein the partition portion is the heat insulating material which is laminated in a plurality of layers so as to partition the space for heat insulating in the heat insulating material and the cooling air passage. The rice cooker according to any one of claims 1 to 6 , wherein the heat insulating material is arranged so as to wrap around the waistline of the main body and has a concave portion or a convex portion located at the center in the longitudinal direction. The rice cooker according to any one of claims 1 to 7 , wherein the partition portion is divided into a plurality of parts.

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