JP2013165876A - Cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress a temperature drop in an inner pot storage part without deteriorating workability at assembly thereof.SOLUTION: A cooker 10 includes a cooker body 12 having an inner pot storage part 14 for removably storing an inner pot 11 inside an external body 13, and having a part between the external body 13 and the inner pot storage part 14 which serves as a component storage part 15, a heating means 23 arranged inside the component storage part 15 of the cooker body 12 to heat the inner pot 11, and a lid body 18 attached to the cooker body 12 so as to be openable and closable for blocking an opening of the inner pot 11. Two or more partitioning ribs 46 and 47 extending in a width direction are arranged at positions having different vertical heights on both of the right and left sides inside the component storage part 15 of the cooker body 12. Three or more vertically partitioned insulation spaces 48A-48C are formed on the side of the component storage part 15.

Description

  The present invention relates to a heating cooker such as a rice cooker or an electromagnetic cooker.

  This type of heating cooker includes a cooker body that detachably accommodates an inner pot, and a lid that closes the upper end opening of the inner pot accommodated in the cooker body. The cooker body is provided with an inner pot accommodating portion for placing the inner pot inside the outer body, and between these outer body and inner pot accommodating portion, heating means for heating the inner pot, a control board, etc. A component accommodating portion for accommodating components is formed. In recent exterior bodies, the width dimension in the left-right direction is smaller than the depth dimension in the front-rear direction, and components such as a control board excluding the heating means are arranged on the front side and the rear side of the component housing portion.

  However, since this heating cooker has a temperature difference between the inside pot accommodating part heated by heating and the part accommodating part communicating with the outside, the temperature in the inner pot accommodating part is lowered by the heat exchange action. Therefore, there is a problem that not only wasteful power is consumed, but also the heat insulation efficiency is deteriorated. Moreover, in the left and right sides where the gap between the exterior body and the inner pot accommodating portion is narrow, the air in the component accommodating portion cools down by the outside air through the exterior body, and the temperature in the inner pot accommodating portion is further lowered.

  Patent Document 1 describes a rice cooker in which a heat shield wall is provided on the upper part of the inner pot accommodating portion of the rice cooker body. The heat shield wall is composed of a first cylindrical wall provided on the upper frame constituting the exterior body and a second cylindrical wall provided on the coil base constituting the inner pot accommodating portion. Since these cylindrical walls are provided so as to be positioned outside the drum heater disposed on the coil base, it is possible to suppress a decrease in the temperature in the inner pot accommodating portion due to convection in the component accommodating portion, and the heat of the drum heater. Can be prevented from being released to the outside.

  However, in the rice cooker of Patent Document 1, since the cylindrical wall is provided on both the upper frame and the coil base to form one heat shield wall (heat insulating space), the structure is complicated and assembly workability is improved. There is an inconvenience of being bad.

Japanese Patent Laid-Open No. 6-284963

  This invention makes it a subject to provide the heating cooker which can suppress the temperature fall of an inner pot accommodating part, without impairing assembly workability | operativity.

  In order to solve the above-mentioned problem, the cooking device of the present invention is provided with an inner pot accommodating part that detachably accommodates an inner pot inside the outer body, and accommodates parts between the outer body and the inner pot accommodating part. A cooking device body, a heating means disposed in the component housing portion of the cooking device body, for heating the inner pan, and attached to the cooking device body so as to be openable and closable, closing the opening of the inner cooking pan In the heating cooker provided with a lid, a partition rib extending in the width direction is provided at two or more positions on the left and right sides in the component housing portion of the cooker body at different heights in the vertical direction. It is set as the structure which formed the 3 or more heat insulation space divided into the up-down direction in the side part of the part.

  Since this cooking-by-heating machine is provided with the division rib extended in the width direction between the inner pot accommodating part side and an exterior body, high assembly precision is not requested | required and assembly workability | operativity is not impaired. Moreover, since two or more partition ribs are provided on both the left and right sides in the component housing portion and partitioned into three or more heat insulation spaces, convection and temperature balance between the heat insulation spaces caused by a temperature difference or the like can be suppressed. Therefore, it can suppress that the temperature in an inner pot accommodating part falls by the heat exchange effect | action with the inside of a component accommodating part.

  In this heating cooker, it is preferable that a cooling fan is provided on the bottom side of the component housing portion of the cooker body, and the partition rib is provided on the upper side of the air blowing area of the cooling fan. If it does in this way, since it can suppress that the inside of an inner pot accommodating part is cooled with the wind of a cooling fan, useless power consumption can be suppressed reliably.

  The exterior body includes a cylindrical body, a bottom body formed with a lower rib that supports an inner periphery of the body, and disposed at a lower end opening of the body, and an inner periphery of the body. And an upper rib formed on the upper end of the body, and the upper rib of the shoulder extends downward toward the lower portion of the inner pot accommodating portion, It is preferable to provide the partition ribs over the ribs. If it does in this way, since the space partitioned off by the extended upper rib and the trunk | drum can be formed in the side part of a components accommodating part, the heat exchange effect | action inside and outside an inner pot accommodating part can be suppressed more reliably.

  In the heating cooker according to the present invention, the partition ribs are provided from the inner pot accommodating portion side toward the exterior body, so that assembly workability is not impaired. Moreover, since the component accommodating part is divided into three or more heat insulation spaces by the partition ribs and convection is prevented between the heat insulation spaces, a temperature drop in the inner pot accommodating part due to the heat exchange action can be suppressed.

It is a longitudinal section showing the composition of the rice cooker which is the cooking-by-heating machine of a 1st embodiment concerning the present invention. It is a cross-sectional view of the rice cooker of 1st Embodiment. (A) The cross-sectional view of the rice cooker of 2nd Embodiment, (B) is the cross-sectional view of the rice cooker of 3rd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 show a rice cooker 10 that is a heating cooker according to a first embodiment of the present invention. The rice cooker 10 includes a rice cooker body 12 that removably accommodates an inner pot 11 having a circular shape in plan view, and a lid 18 that is rotatably attached to the rice cooker body 12.

  The rice cooker body 12 includes an inner pot accommodating portion 14 that detachably accommodates the inner pot 11 inside the outer body 13. In this rice cooker main body 12, the space between the exterior body 13 and the inner pot accommodating part 14 comprises the components accommodating part 15 which accommodates each component for performing a rice cooking process and a heat retention process. The exterior body 13 is provided with an intake port 16 communicating with the inside of the component housing portion 15 on the front side and an exhaust port 17 on the rear side.

  The lid 18 is attached to the rice cooker body 12 so as to be openable and closable so as to close the inner pot accommodating portion 14. An inner lid 19 that seals the upper end opening of the inner pot 11 is disposed on the surface of the lid 18 that faces the inner pot 11. The lid 18 is provided with an exhaust passage 20 that communicates the inside of the inner pot 11 with the outside, and a reed valve 21 that can shut off the exhaust passage 20 is disposed on the inlet side. In the reed valve 21, when the rod is retracted by driving the solenoid 22, the ball member 21a closes the vent hole 21b by rolling and shuts off the exhaust passage 20. Thereby, the inside pot 11 can be boosted to a pressure higher than the atmospheric pressure. On the other hand, when the rod of the solenoid 22 is advanced, the ball member 21a is separated from the vent hole 21b, and the exhaust passage 20 is opened (communicated). Thereby, the pressure in the inner pot 11 and atmospheric pressure are balanced.

  An induction heating coil 23, which is a first heating means, is disposed in the component housing portion 15 of the rice cooker body 12 via a ferrite core 24 so as to be positioned below the inner pot housing portion 14. The induction heating coil 23 heats the inner pot 11 by energization to heat the rice in the inner pot 11 and heats the cooked rice. In addition, a temperature sensor 25 for detecting the temperature of the inner pot 11 is disposed on the rear side of the component housing portion 15. Further, a control board 26 is disposed in a wide space on the front side of the component housing portion 15, and a microcomputer that performs rice cooking processing and heat insulation processing based on the detection value of the temperature sensor 25 is mounted on the control board 26. On the further front bottom side of the control board 26, a cooling fan 27 for cooling the component parts arranged on the lower side of the part accommodating portion 15 including the control board 26 and the induction heating coil 23 is provided. In addition, an operation panel 28 is provided on the front upper portion of the exterior body 13, and an operation substrate 29 is disposed so as to be positioned inside the operation panel 28.

  The control board 26 and the cooling fan 27 are fixed to the exterior body 13 of the rice cooker body 12 by the board holder 30. This board | substrate holder 30 mounts | wears with the control board 26 so that it may be located in the inner pot accommodating part 14 side, and mounts the cooling fan 27 so that it may be located in an other side. The upper part of the substrate holder 30 is closed by the top wall portion 31. The fan mounting portion 32 located on the front side mounts the cooling fan 27 in an inclined state so as to blow upward and rearward. A heat shield plate 33 is disposed between the control substrate 26 attached to the substrate holder 30 and the inner pot accommodating portion 14.

  The cooling fan 27 attached to the substrate holder 30 blows the outside air sucked from the intake port 16 upward and rearward. Thereby, the wind blown to the control board 26 and the top wall portion 31 flows downward toward the bottom body 35. Then, it passes through the arrangement | positioning area | region of the induction heating coil 23 which is the lower side of the inner pot accommodating part 14, and is exhausted outside from the exhaust port 17. FIG. In other words, the air blowing area by the cooling fan 27 is the lower side of the component housing portion 15 that extends from the board holder 30 to the lower portion of the inner pot housing portion 14.

  This rice cooker 10 controls the induction heating coil 23 and the solenoid 22 by a microcomputer mounted on the control board 26 to maintain a preheating temperature at which the water absorption into the rice rice is promoted. (Nakapappa) The rice cooking process which has the boiling maintenance process which maintains the inside pan 11 inside boiling temperature, and the steaming process which steams the cooked cooked rice is performed. Moreover, when a rice cooking process is complete | finished, the heat retention process which maintains a cooked rice at the set heat retention temperature continuously will be performed.

  At the time of performing the rice cooking process and the heat retaining process, the inner pot 11 is induction-heated, so that the temperature Ta in the inner pot accommodating part 14 is raised and becomes higher than the temperature Tb in the component accommodating part 15 (Ta> Tb). Due to these temperature differences and the ventilation of the cooling fan 27, convection and temperature equilibrium occur in the component housing portion 15. Moreover, the temperature in the inner pot accommodating part 14 falls by the heat exchange effect | action with the components accommodating part 15 inside. Here, the inside of the inner pot 11 has an area where there is no cooked rice at the top even during full rice cooking. The upper temperature Ta where the cooked rice is absent is likely to decrease (heat radiation) due to the heat exchange action with the temperature Tb in the component housing portion 15.

  Therefore, in the rice cooker 10 of the present embodiment, the heat insulation spaces 48A to 48C partitioned in the vertical direction by the partition ribs 46 and 47 are provided in the component storage unit 15 to suppress convection and temperature balance in the component storage unit 15. It is said.

  Specifically, the exterior body 13 includes a cylindrical body 34, a bottom body 35 disposed at the lower end of the body 34, and a shoulder body 37 disposed at the upper end of the body 34. The body 34 has a cylindrical shape in which the width dimension in the left-right direction is smaller than the depth dimension in the front-rear direction. The body 34 is formed in a substantially oval shape in plan view by bending a thin stainless steel plate. The bottom body 35 is made of resin and closes the lower end opening of the body 34. The bottom body 35 has a tray shape, and a lower rib 36 that supports the inner peripheral portion of the body 34 is formed on the outer peripheral portion of the upper end. In addition, the bottom body 35 is provided with an intake port 16 at a ridge portion at the front lower portion where the cooling fan 27 is located, and an exhaust port 17 is formed at a ridge portion at the lower rear portion located on the opposite side across the induction heating coil 23. Is formed. The shoulder 37 is made of resin and closes the upper end opening of the body 34. The shoulder body 37 is formed with an upper rib 38 that maintains the inner periphery of the body 34 at the outer periphery of the lower end. An opening 39 for detachably placing the inner pot 11 is provided at the center of the shoulder body 37, and the inner pot accommodating part 14 is formed below the opening 39. The exterior body 13 is assembled in a state where a boss (not shown) is provided on the bottom body 35 and is screwed and fixed to the shoulder body 37 through this boss so that the body 34 is sandwiched therebetween.

  The inner pot accommodating portion 14 includes an inner body 42 disposed below the opening 39 and a protective frame 44 disposed at the lower end of the inner body 42. In the present embodiment, the upper frame portion 40 that constitutes the upper end of the inner pot accommodating portion 14 is integrally formed with the shoulder body 37. The upper frame portion 40 has a cylindrical shape, and an upper support portion 41 for supporting the outer peripheral portion of the upper end of the inner body 42 is provided at the lower end edge thereof. The inner cylinder 42 is formed in a cylindrical shape by bending a stainless steel plate. A barrel heater 43 serving as a second heating means for heating the inner pot 11 is disposed on the outer peripheral portion of the inner barrel 42. The protective frame 44 is made of resin (non-conductive material) and is formed in a tray shape that closes the lower end portion of the inner body 42. A lower support portion 45 for supporting the outer peripheral portion of the lower end of the inner body 42 is provided at the upper end edge of the protective frame 44.

  The upper frame portion 40 of the shoulder body 37 is provided with first partition ribs 46 that extend horizontally toward the inner peripheral portion of the body 34. The first partition rib 46 is made of a separate resin plate, and is fixed to the shoulder body 37 by appropriate means such as welding, adhesion, and screwing via a bracket. The protective frame 44 is integrally formed with second partition ribs 47 extending horizontally toward the inner peripheral portion of the body 34 so as to be positioned below the lower support portion 45. The second partition rib 47 is positioned below the first partition rib 46 at a predetermined interval in the assembled state. The second partition rib 47 is provided so as to be positioned above the induction heating coil 23 disposed on the protective frame 44, that is, above the air blowing area of the cooling fan 27. The outer ends of the first and second partition ribs 46 and 47 are configured to substantially coincide with the outer end surfaces of the ribs 36 and 38 of the bottom body 35 and the shoulder body 37. Thereby, the assembling workability of the exterior body 13 is not disturbed.

  After assembling the inner pot accommodating portion 14 to the shoulder body 37 and further assembling the body 34 and the bottom body 35, as described above, in the exterior body 13, the components accommodated with the inner pot accommodating portion 14 are accommodated. Part 15 is formed. At this time, in this embodiment, since the partition rib extending in the width direction from the inner pot accommodating portion 14 toward the exterior body 13 is provided, high assembly accuracy is not required, and assembly workability is not impaired. And in the formed component accommodating part 15, the division ribs 46 and 47 extended in the width direction between the inner pot accommodating part 14 and the exterior body 13 on the right and left sides where the clearance gap between the inner pot accommodating part 14 and the exterior body 13 is narrow. However, it is provided in the position where the height of an up-down direction differs. Thereby, three heat insulation spaces 48A to 48C partitioned in the vertical direction are formed on both side portions of the component housing portion 15.

  In the rice cooker 10 configured as described above, the convection and temperature balance on the left and right sides in the component housing portion 15 can be suppressed by the partition ribs 46 and 47 and the heat insulating spaces 48A to 48C. In particular, since the partition ribs 46 and 47 are positioned above the air blowing region by the cooling fan 27, the low-temperature cooling air is discharged to the outside through only the heat insulating space 48C, and the temperature of the upper heat insulating space 48A is lowered. Can be prevented. As a result, it is possible to suppress the temperature Ta at the upper portion of the inner pot accommodating portion 14 that is easy to cool down due to the heat exchange action with the temperature Tb in the component accommodating portion 15, and it is possible to reliably suppress wasteful power consumption.

  FIG. 3A shows a rice cooker 10 according to the second embodiment. In the second embodiment, the upper rib 38 of the shoulder body 37 in the outer package 13 extends downward over the protective frame 44 that is the lower part of the inner pot accommodating portion 14, and the partition ribs 46 and 47 are formed on the upper rib 38. It differs from the first embodiment only in that it is provided so as to extend toward the inner surface. The rice cooker 10 configured as described above can form a heat insulating space partitioned by the extended upper rib 38 and the body 34 in the side portion of the component housing portion 15.

  Here, the temperature Tb in the component accommodating part 15 is higher than the temperature Tc outside the exterior body 13 by the temperature rise in the inner pot accommodating part 14 or the temperature rise of each component. As a result, the temperature in the component housing portion 15 is lowered by the heat exchange action with the outside air, and the temperature in the inner pot housing portion 14 is also indirectly lowered. However, in this embodiment, since the heat insulating space is formed between the body 34 and the body 34 by the upper rib 38 on the side portion in the component housing portion 15, the heat exchange action with the outside air can be suppressed. As a result, the temperature drop in the inner pot accommodating part 14 can be reliably prevented, and wasteful power consumption can be prevented.

  FIG. 3B shows a rice cooker 10 according to the third embodiment. In this third embodiment, instead of providing the partition ribs 46, 47 on the inner pot accommodating portion 14 side, the partition ribs 46, 47a, 47b are provided on the upper rib 38 of the shoulder body 37 constituting the exterior body 13. This is different from the second embodiment. The first partition rib 46 is fixed to a separate resin plate by an appropriate means so as to be positioned in the upper frame portion 40. The second partition rib 47 a is provided integrally with the upper rib 38 so as to be positioned on the lower support portion 45 of the protective frame 44. The second partition rib 47b is provided integrally with the upper rib 38 so as to be positioned between the first and second partition ribs 46 and 47a.

  In 3rd Embodiment comprised in this way, many 2nd division ribs 47 can be provided as desired. Therefore, many component accommodating parts 15 can be divided in the up-down direction. Therefore, the heat insulation in the component accommodating part 15 can be aimed at, and especially the temperature fall (heat dissipation) of the inner pot 11 in the upper part can be prevented reliably.

  In addition, the cooking-by-heating machine of this invention is not limited to the structure of the said embodiment, A various change is possible.

  For example, in the above-described embodiment, the first partition rib 46 is formed of a separate resin plate, and the second partition rib 47 is formed integrally with the protective frame 44 or the shoulder body 37. However, all of the partition ribs are formed separately. Alternatively, it may be formed integrally. Moreover, in the said embodiment, although all the division ribs 46 and 47 were formed above the ventilation area | region of the cooling fan 27, you may form a division rib also in the ventilation area | region of the cooling fan 27. FIG. Furthermore, in the said embodiment, although the partition rib was provided only in the right-and-left both sides of the component accommodating part 15, it is good also as a structure provided in the rear side of the component accommodating part 15, and also in the front side.

  And in the said embodiment, although the rice cooker 10 was mentioned as an example and demonstrated as a cooking rice cooker of this invention, if it is heating cookers, such as an electromagnetic cooker, a mochi machine, and a bread maker, any is applicable. Thus, similar actions and effects can be obtained.

10 ... Rice cooker (heating cooker)
11 ... inner pot 12 ... rice cooker body (cooker body)
DESCRIPTION OF SYMBOLS 13 ... Exterior body 14 ... Inner pot accommodating part 15 ... Parts accommodating part 16 ... Intake port 17 ... Exhaust port 18 ... Cover body 23 ... Induction heating coil (heating means)
DESCRIPTION OF SYMBOLS 26 ... Control board 27 ... Cooling fan 34 ... Body 35 ... Bottom body 36 ... Lower rib 37 ... Shoulder body 38 ... Upper rib 39 ... Opening part 40 ... Upper frame part 42 ... Inner trunk 44 ... Protection frame 46 ... 1st division Rib 47, 47a, 47b ... 2nd division rib 48A-48C ... Thermal insulation space

Claims (3)

A cooker main body provided with an inner pot accommodating part that detachably accommodates an inner pot inside the outer body, and a part accommodating part between the outer body and the inner pot accommodating part,
A heating means disposed in the component housing portion of the cooker body and heating the inner pot;
A lid that is openably and closably attached to the cooker body, and closes the opening of the inner pot;
In a heating cooker equipped with
Two or more partition ribs extending in the width direction are provided on the left and right sides in the component housing portion of the cooker main body at positions where the heights in the vertical direction are different, and three or more partitioned in the vertical direction on the side portion of the component housing portion. A cooking device characterized by forming an insulated space.   The heating cooker according to claim 1, wherein a cooling fan is disposed on a bottom side of the component housing portion of the cooker body, and the partition rib is provided on an upper side of a blowing area of the cooling fan. The exterior body supports a cylindrical body, a bottom body in which a lower rib supporting the inner periphery of the body is formed and disposed at a lower end opening of the body, and an inner periphery of the body. A shoulder body formed with an upper rib and disposed at an upper end opening of the body,
The cooking according to claim 1 or 2, wherein the upper rib of the shoulder body extends downward toward the lower portion of the inner pot accommodating portion, and the partition rib is provided over the upper rib. vessel.

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