JP2000070129A - Heat reserving kettle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrict dew condensation on a display window part by securing heating of the undersurface of a lid body as uniformly as ever while reducing heat effect on a display base plate by a lid heating means. SOLUTION: A lid heater 69 is arranged at a position that allows avoiding of a portion below a display base plate 72 as much as possible. As a result, the display base plate 72 is so arranged as to be immune to the effect of radiation heat above the lid heater 69 to restrict a temperature rise on the perimeter of the display base plate 72 and ultimately dew condensation on the internal surface of a transparent window part 66 attributed to a temperature difference between the inside and outside of the transparent window part 66. The lid heater 69 is provided on a side facing a pot 5 of a radiation plate 53. This enables heating of the undersurface of the lid body 51 in a temperature distribution as uniform as ever during the rice cooking and heat reserving periods.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulated pot having a lid heating means inside a lid.

[0002]

Conventionally, there has been known an insulated pot having an operation panel on an upper surface of a lid for the purpose of improving usability. The inside of the lid is usually structured so that steam and water do not easily enter, but the seal between the lid and the pot due to packing deteriorates when rice grains are caught, and steam leaks out If water adheres to the back of the inner lid attached to the bottom of the lid or if water adheres to the outer periphery of the pot, rice was erroneously cooked without attaching the inner lid directly facing the pan In such a case, or when water is spilled from the upper portion of the lid and water enters through a gap, steam or water may enter the inside of the lid. For this reason, the display board housed inside the lid facing the operation panel has its housing space waterproofed.

However, when cooking rice and keeping the temperature warm, the heat radiating plate that forms the lower surface of the lid provided inside the lid is heated by the lid heating means. And the moisture inside this small containment space
Condensation on the transparent window of the operation panel, which is in contact with outside air and is relatively low in temperature, is a factor that deteriorates visibility. For this reason, various measures have been taken, such as providing silica gel for absorbing moisture and a tube that communicates the storage space of the display substrate with the outside air, within the storage space of the display substrate. It is an important issue to suppress a rise in temperature inside the accommodation space of a certain display substrate. At the same time, the temperature rise of various electronic components such as a liquid crystal display device provided on the display substrate, a microcomputer (microcomputer), an LED, and a battery is suppressed, and the reliability during long-term use of the components is improved.

[0004] Further, at the time of cooking rice and keeping the temperature warm, the heat radiating plate is heated by the lid heating means, and radiant heat from the surface of the plate to be insulated is used.
The inner lid provided below the heat sink is heated. In this case, when the inner lid is heated by electromagnetic induction, since the inner lid itself generates heat, the temperature of the induction heating coil inside the lid is only small and does not increase so much. Is provided on the back side of the heating plate as a lid heating means and heats the radiator plate, the radiant heat from the heater significantly increases the temperature inside the lid above the heater. For this reason, the lid temperature detecting means provided inside the lid to detect the temperature of the back surface of the inner lid tends to detect a temperature higher than the normal inner lid temperature under the influence of radiant heat from the heater. And the temperature detection accuracy is degraded. Further, when the thermal coupling between the inner lid and the lid temperature detecting means is deteriorated, for example, when the heat-sensitive portion of the lid temperature detecting means is in contact with the inner lid at an angle, the temperature is particularly affected by radiant heat from the heater. The detection accuracy will be degraded. Furthermore, since the temperature of the installation part of the lid temperature detection means inside the lid body also rises, if the plastic of this installation part undergoes thermal deformation or the like, the heat-sensitive part of the lid temperature detection means contacts the inner lid by tilting, This also causes a deterioration in temperature detection accuracy.

[0005] Conventionally, the steam discharge hole and the inside of the steam port provided in the lid during cooling are cooled by the influence of the outside air, so that the rice in the pot immediately below the steam discharge hole is locally cooled, There is a problem in that the steam collected during the rice cooking cools down during the heat retention, causing decay and causing a rotten smell, etc. Measures were taken to maintain the heat, such as by providing a heat shield plate on the top of the car. However, with such a structure, although the effect of preventing the inside of the vapor discharge hole and the vapor port from being cooled can be obtained, the operating temperature of other components inside the lid, particularly components mounted on the display substrate inside the lid may be low. However, these parts were affected by heat, and further measures against heat were required.

Accordingly, in view of the above problems, the present invention has a common object to reduce the thermal effect of the lid heating means, and to uniformly heat the lower surface of the lid during rice cooking and warming, as in the past. It is a first object of the present invention to provide an insulated pot capable of reducing the influence of heat on the display substrate by the lid heating means and suppressing the dew condensation on the display window of the operation panel while ensuring the above-mentioned conditions.

[0007] A second object of the present invention is to reduce the thermal effect of the lid heating means on the lid temperature detecting means so that the temperature of the inner lid can be accurately detected, so that the temperature of the inner lid can be kept high during rice cooking and heat retention. It is an object of the present invention to provide a warming pot that can prevent the inner lid from being overheated sometimes and can stably heat the inner lid.

A third object of the present invention is to prevent the cooling of the vapor discharge holes and the vapor ports, reduce the thermal influence on the display substrate by the lid heating means, and reduce the number of components mounted on the display substrate. An object of the present invention is to provide a heating pot capable of preventing a temperature rise.

[0009]

According to a first aspect of the present invention, there is provided an insulated pot having an operation panel provided with a transparent window on an upper surface of an outer lid forming a lid in order to achieve the first object. A display substrate is provided between the operation panel and a lid lower surface member that forms the lower surface of the lid, and is located on the lid lower surface member inside the lid to avoid a lower portion of the display substrate as much as possible. A lid heating means for heating the lid lower surface member is arranged on a surface facing the pot.

According to the first aspect of the present invention, by disposing the lid heating means at a position as far as possible below the display substrate, the display substrate is less susceptible to radiant heat upward from the lid heating means. The temperature rise around the substrate is suppressed. Therefore, dew condensation on the inner surface of the transparent window due to a temperature difference between the inside and the outside of the transparent window on the upper side of the display substrate can be suppressed. In addition, since the lid heating means is provided on the surface of the lid lower surface member facing the pot, the lower surface of the lid can be heated with a uniform temperature distribution as in the past during rice cooking and heat retention.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, in addition to the configuration of the first aspect, the space for accommodating the display substrate and the space for disposing the lid heating means are isolated inside the lid, and the lid heating is performed. A communication path is provided which communicates a space in which the means is arranged with a gap at a rear portion of the lid body which supports the lid body with the main body and which communicates with the inside and outside of the lid.

According to the second aspect of the present invention, the space for accommodating the display substrate and the space for disposing the lid heating means are isolated inside the lid, so that the display substrate is less affected by the heat from the lid heating means. can get. Further, the heat released upward from the lid heating means is released to the outside of the lid from the gap in the hinge portion by the communication path. Therefore, it is difficult for hot air to be trapped inside the lid, and furthermore, it is possible to suppress a rise in the temperature of the accommodation space for the display substrate and effectively reduce the condensation on the inner surface of the transparent window.

According to a third aspect of the present invention, there is provided the warming pot according to the second aspect, wherein the communication path is provided with a steam passage for discharging steam generated from inside the main body to the outside of the main body during rice cooking. .

According to the third aspect of the present invention, the steam passage is always heated even during the heat insulation, so that the steam passage can be prevented from being cooled even in winter, and the rice in the pot can be prevented from being spoiled.

According to a fourth aspect of the present invention, there is provided an insulated pot according to any one of the first to third aspects, wherein the lid heating means has a cord-like shape and discharges steam to the outside of the main body. It is arranged around the steam passage.

According to the configuration of the fourth aspect, the upward radiant heat from the lid heating means can be supplied to the steam passage, and the rotting of the rice in the pot due to the temperature decrease in the steam passage can be prevented.

According to a fifth aspect of the present invention, in order to achieve the first object, the warming pot includes an operation panel having a transparent window provided on an upper surface of an outer lid forming a lid. A display substrate between the lid lower surface member forming the lower surface of the lid and a lid heating means for heating the lid lower surface member on the lid lower surface member inside the lid body; A partition member for partitioning between the outer lid and the outer lid is provided, and the number of the partition members between the display substrate and the lid heating unit is larger than the number of the partition members between the other lid heating unit and the outer lid. It is provided.

According to the fifth aspect of the present invention, dew forms on a portion where the display substrate does not exist. However, an environment in which dew condensation hardly occurs on the back side of the outer surface of the outer lid where the display substrate exists is provided by providing a large number of partition members. In addition, dew condensation on the inner surface of the transparent window due to a temperature difference between the inside and the outside of the transparent window on the upper side of the display substrate can be suppressed. As a result, especially in winter, when the outside temperature is low and the transparent window is likely to be cold, or in use environments where the cool air from the air conditioner easily hits the transparent window on the operation panel,
Fogging of the display when the transparent window is easy to cool can be suppressed,
Visibility is improved and usability can be improved.
Further, since more partition members are provided between the display substrate and the lid heating means than in other parts, the display substrate is less affected by radiant heat upward from the lid heating means, and the periphery of the display substrate is hardly affected. Temperature rise is suppressed. In addition, since the lid heating means is arranged on the lid lower surface member, the lower surface of the lid can be heated with a uniform temperature distribution as in the related art at the time of cooking rice or keeping the temperature.

According to a sixth aspect of the present invention, there is provided the warming pot according to the fifth aspect, wherein a liquid crystal display is provided on the display substrate so as to face the transparent window of the operation panel.

According to the configuration of the sixth aspect, the liquid crystal display does not illuminate itself, but reflects the light from the transparent window to confirm the display. However, the transparent window is hardly fogged. Therefore, it is possible to eliminate the difficulty of seeing the display when the transparent window is fogged.

According to a seventh aspect of the present invention, in order to achieve the above-mentioned second object, the warming pot has an inner lid which directly covers the pan below a lid lower surface member forming a lower surface of the lid. Inside the lid, a lid heating means for heating the lid lower surface member during cooking and warming, a partition member for partitioning between the lid heating means and an outer lid forming an outer shell of the lid, A lid temperature detecting means for detecting a temperature, wherein an opening is provided in the partition member in the vicinity of the lid temperature detecting means, and the lid is pivotally supported by the main body at the opening and at the rear of the lid. A communication path is formed to communicate with a gap of the hinge portion communicating with the inside and outside of the lid.

According to the configuration of the seventh aspect, the radiant heat from the lid heating means is released to the outside of the lid from the opening through the gap between the hinges, so that the lid temperature detecting means can detect the radiant heat from the lid heater. It is less affected and the temperature of the inner lid can be detected accurately. Therefore, it is possible to prevent the inner lid from being overheated at the time of cooking rice and keeping the temperature, and to perform stable heating of the inner lid.

According to an eighth aspect of the present invention, there is provided an insulated kettle according to the seventh aspect, wherein the lid temperature detecting means is provided on the partition member.

According to the eighth aspect of the present invention, since the opening is formed in the partition member near the lid temperature detecting means, it is possible to suppress a rise in temperature of the partition member around the lid temperature detecting means. . Therefore, if the lid temperature detecting means is installed on the partition member, it is possible to prevent the mounting position of the lid temperature detecting means from fluctuating due to thermal deformation of the mounting member, and to stably bring the lid temperature detecting means into contact with the inner lid. be able to.

According to a ninth aspect of the present invention, in order to attain the third object, the warming pot includes an operation panel having a transparent window provided on an upper surface of an outer lid forming a lid. A display substrate between the lid lower surface member forming the lower surface of the lid body, and a lid heating means for heating the lid lower surface member on the lid lower surface member inside the lid body; A partition member is provided between the lid and the lid heating means, a vapor discharge hole for releasing vapor in the pot is provided on the lid, a detachable vapor port is provided in the vapor discharge hole, and the vapor discharge hole or the vapor port is provided. A gap through which the radiant heat of the lid heating means passes is formed in the outer periphery or both sides of the lid.

According to the configuration of the ninth aspect, by providing the partition member between the display substrate and the lid heating means,
The display substrate is less likely to be affected by radiant heat upward from the lid heating means, and the temperature rise around the display substrate is suppressed. Therefore, dew condensation on the inner surface of the transparent window due to a temperature difference between the inside and the outside of the transparent window on the upper side of the display substrate can be suppressed. In addition, it is possible to suppress an increase in the temperature of components mounted on the display substrate. By passing the hot air generated from the lid heating means through the gap, the inside of the steam discharge hole or the steam port can be maintained at a predetermined temperature without cooling. Therefore, it is possible to eliminate the problem that the rice in the pot directly below the steam discharge hole is locally cooled, and the stored portion of the tobacco stored in the steam port during the rice cooking cools and rots during the heat retention, causing odors such as putrefaction. .

According to a tenth aspect of the present invention, in the configuration of the ninth aspect, a display substrate is provided in front of the lid, and a discharge port communicating with the gap is formed behind the lid. Things.

According to the tenth aspect, since excess heat inside the cover is discharged to the outside from the discharge port, the temperature rise inside the cover and further, the temperature of the display substrate can be further suppressed. Further, since the display substrate is located at a position where the radiant heat from the lid heating means does not directly hit, the heat influence on the display substrate can be effectively reduced also in this regard.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the heat retaining pot according to the present invention will be described below with reference to FIGS. In the same figure, 1 is the main body of the insulated pot, 2 is this main body 1
A bottom plate 3 that covers the opening of the outer frame 2 and forms the bottom outer surface of the heat retaining pot main body 1 is fitted and fixed to the bottom of the outer frame 2. Further, a bottomed tubular pot housing 4 is disposed inside the main body 1, and the pot 5 is detachably housed in the pot housing 4. The pan storage wall 6 forming the side surface of the pan storage section 4 is formed integrally with the outer frame 2 forming the upper part of the pan storage section 4. Then, an inner frame 7 that forms a bottom from the lower side surface of the pan storage unit 4 is provided so as to close the bottom opening of the pan storage wall 6. The pot 5 is made of aluminum having good heat conductivity,
Aluminum alloy, duralumin, magnesium, copper, and the like are used as the main body 8 serving as the base material of the pot 5, and a heating element 9 made of a magnetic metal plate such as a ferritic stainless steel or an iron plate is provided on the outer bottom and lower side of the main body 8. Joined. Further, a flange portion 10 extending outward in the horizontal direction is formed on the upper portion of the pot 5 having a bottomed cylindrical shape. The lower surface of the flange portion 10 is placed on the upper end of the pot housing portion 4 so that the pot 5 is housed in a suspended state inside the pot housing portion 4.

Outside the inner frame 7 for housing the pan 5, a heating coil 11 is provided as a heating means for heating the pan 5 by electromagnetic induction. The heating coil 11 corresponding to this pan heating means,
It is constituted by twisting a plurality of wires, and is provided so as to be spirally wound at a position where the bottom and the lower side of the pot 5 are heated facing the heating element 9. By supplying a predetermined high-frequency current to the heating coil 11, the heating element 9
Is heated by electromagnetic induction heating, and the pan 5 is heated.
It is configured to heat a cooked object (cooked rice) such as rice or water stored in the inside.

The bowl-shaped inner frame 7 is provided so as to be connected to the lower end of the upper opening 12 of the outer frame 2 forming the outer shell of the main body 1, and is provided around the upper opening 12 of the outer frame 2. The dew that flows down from the inner surface of the lid 51 when the lid 51 described later is opened,
A depressed portion 13 for preventing dew from flowing out of the outer surface of the outer frame 2 is formed. In addition, the concave portion 13 as a depot is
If the dew flowing from the inner surface of the lid 51 can be prevented from overflowing to the outer surface of the outer frame 2, it is not always necessary to make the concave shape. Further, it is not necessary to form the recess 13 around the entire periphery of the pot 5. Inside the main body 1, there is provided a pot temperature sensor 14, which is located at the center of the inner frame 7 and detects the temperature of the pot 5 during cooking and keeping warm.

Outside the heating coil 11, this heating coil
A coil cover 15 is provided, which partially presses and fixes 11 to the inner frame 7 side. When viewed from the bottom shown in FIG. 2, the coil cover 15 does not cover the entire outside of the heating coil 11 arranged in an annular shape, but has a substantially belt-like shape so that a part of the heating coil 11 is exposed to some extent. Is formed. At the center of the coil cover 15, a convex sensor housing 16 for housing the pot temperature sensor 14 is formed, and the heating coil 11 extends from the sensor housing 16 in the left-right direction. A support portion 17 that is partially fixed to and supported by the inner frame 7 is formed. The support portion 17 is formed in a curved shape according to the outer shape of the inner frame 7 so as to contact the outer surface of the heating coil 11.

Inside the main body 1, in addition to an inverter circuit for supplying a high-frequency current to the heating coil 11 and adjusting the heating output of the heating coil 11, a change in the power supply voltage supplied to the main body 1 is detected. Heating unit 21 having a power supply voltage detection circuit to be heated, a cooling fan 22 disposed in close proximity to the heating unit 21 for cooling the heating components and the like of the heating unit 21, and a power supply wire with a power plug 23 ( (Not shown) in a spirally wound state. The power supply means is a cord reel 24 which is a power supply wire winding mechanism. The power supply voltage taken from the cord reel 24 is converted into a predetermined operating voltage and output. In addition, a power supply board 25 is provided as a control circuit board including a control circuit for controlling the operation of each part of the rice cooker.

The power supply board 25 held by the board holding member 26 is arranged vertically together with the heating unit 21 so that its component surface faces the inner side surface of the outer frame 2. The power supply from the outlet is supplied to the power supply board 25 inside the main body 1 and various electric components (for example, the heating unit 21).
The flat cord reel 24 supplied to the main body 1 also has a space between the outer surface of the inner frame 7 formed on the rear portion of the main body 1 and the inner surface of the outer frame 2.
Inside 27, it is arranged in a vertical state alongside the power supply board 25. The code reel 24 is disposed so as to overlap behind the power supply board 25 when viewed from the center of the main body 1, and faces the code reel 24 and the power supply board 25, and has a coil cover 15 covering the upper surface of the heating coil 11. A support portion 17 is provided. In addition, a hinge shaft 55 and a main body 1 to be described later are provided above the space 27.
A handle mounting portion 61 forming the upper surface of the rear portion 59 is provided, and a cooling fan 22 serving as a blowing means for introducing outside air into the space portion 27 is fixed to the bottom plate 3 at the bottom of the space portion 27. You. The heating unit 21 provided in the space 27
May be either integral with or separate from the power supply board 25, and the support 17 of the coil cover 15 may also be opposed to the heating unit 21.

The heating coil 11 has a linear shape, and a winding start portion 31 and a winding end portion 32 for winding around the inner frame 7 are formed on both ends thereof. The winding start portion 31 and the winding end portion 32 of the heating coil 11
The support portion 17 of the coil cover 15 is disposed in the vicinity of the coil cover 15, and the end portion 33 on the starting end side of the heating coil 11 with respect to the winding start portion 31 is led out of the coil cover 15. The coil cover 15 is formed with a cutout portion 34 and a cutout portion 36 for leading an end 35 on the end side of the heating coil 11 beyond the winding end 32 to the outside of the coil cover 15. Then, the coil cover 15 is positioned near the notches 34 and 36.
A plurality of locking projections 37 are provided on the outer surface of the heating coil 11 when the ends 33 and 35 of the heating coil 11 are routed. Accordingly, the wired ends 33 and 35 of the heating coil 11 can be appropriately and shortly connected to the heating unit 21 facing the support portion 17 with an accurate wiring pattern. Further, the heating coil 11 is prevented from peeling off from the ends 33 and 35 of the heating coil 11, that is, from the end of the winding due to external force. Reference numeral 38 denotes a conductive external terminal fixed to the ends 33 and 35 of the heating coil 11 by crimping.

At least the starting portion 31 of the heating coil 11
In the vicinity of the winding end portion 32, an adhesive member 41 made of heat-resistant silicone rubber is interposed between the heating coil 11 and the coil cover 15 to prevent the winding end of the heating coil 11 from fraying. It has become. Inner frame 7 and coil cover 15
Is made of polyethylene terephthalate resin containing glass fiber having excellent heat resistance, and contains 10% to 20% of hollow ceramic beads (not shown) inside. The ceramic beads form a myriad of heat-insulating spaces inside the inner frame 7, and are made of a material having improved heat-insulating properties.
It is configured to prevent the side surface from getting cold. Reference numeral 42 denotes a ferrite member radially arranged outside the heating coil 11, and reference numeral 43 denotes a ferrite member fixing frame for fixing the ferrite member at a predetermined position.

Reference numeral 51 denotes a lid that covers the upper surface of the main body 1. The lid body 51 includes an outer lid 52 that forms an outline of the lid body 51, a heat radiation plate 53 that is a lid lower surface member that forms the lower surface of the lid body 51, and a heat radiation plate 53.
And an outer lid cover 54 for fixing the heat radiating plate 53 above and forming the outer periphery of the heat radiating plate 53 below the outer lid 52. The lid 51 is pivotally supported by a hinge shaft 55 serving as a hinge provided on the rear upper side of the outer frame 2, while a lid locking portion is provided on the front front side of the main body 1 on the side opposite to the hinge shaft 55. A hook button 56 is provided. By operating the hook button 56, the engagement between the main body 1 and the lid 51 is released, and the lid 51 is automatically opened around the hinge shaft 55. Has become. Reference numeral 57 denotes an inner lid which directly covers the pan 5 and is provided detachably below the heat sink 53. In the present embodiment, the inner surface of the lid 51 directly facing the upper opening of the pot 5 is the inner lid 57, but the inner lid 57 is not provided, and the inner surface of the lid 51 becomes the heat sink 53. A configuration may be used.

At a position below the hinge shaft 55, a rear portion 59 of the main body 1 is formed which protrudes rearward from a rear surface 58 of the lid 51 forming a part of the hinge portion. Further, on both side surfaces of the outer frame 2 in front of the rear surface 58 of the lid 51, carrying handles 60 for the main body 1 are provided rotatably with respect to the outer frame 2. Then, when the handle 60 is tilted to the rear of the main body 1, the handle 60
Is the upper surface of the rear part 59 of the main body 1 (the handle mounting part 61)
It is designed to be mounted on. The hinge shaft 55 is provided at a position higher than the upper surface of the pan 5 or the outer frame 2 at a position where the pan 5 is stored. The upper surface of the rear portion 59 of the main body 1 is formed at a position lower than the upper surface of the pot 5 or the outer frame 2 at the position where the pot 5 is stored. Further, the rear outer surface 62 of the rear portion 59 of the main body 1 is formed so as to be continuous with the outer surface of the bottom plate 3 provided at the lower end of the outer frame 2 so as to form the lower side of the outer shell of the main body 1.

On the rear outer surface 62 of the main body 1, a rating display name plate 63 on which the rated voltage of the rice cooker, the rated power consumption, precautions for use, various certification marks, the rating of the safety device, and the like are printed. In order to facilitate wiring connection from the electrical components inside the lid 51 to the heating unit 21 and the power supply board 25,
An opening (not shown) is provided on the rear outer surface 62 of the main body 1. Then, a cover member 64 for concealing this opening from the outside is provided, and the rating display name plate 63 is attached to the outer surface of the cover member 64.

The height of the handle mounting portion 61 is formed such that the entire handle 60 becomes substantially horizontal when the handle 60 is tilted rearward of the main body 1. Also, the rear outer surface of the handle 60 and the rear outer surface 62 of the main body 1 form substantially the same surface so that the handle 60 does not protrude outward from the main body 1 when the handle 60 is tilted rearward of the main body 1. positioned.

A transparent window 66 having a light-transmitting property and an operation panel 68 provided with various operation switches 67 are provided in front of the upper surface of the outer lid 52. Also, inside the lid 51,
A lid heater 69 serving as a lid heating means for heating the radiator plate 53 and thus the inner lid 57, and a lid temperature sensor 70 serving as a lid temperature detecting means for detecting the temperature of the radiator plate 53 or the inner lid 57 are provided. Between the heat sink 53 forming the lower surface of the lid 51,
A liquid crystal display (L) facing the transparent window 66 of the operation panel 67
In addition to the CD 71, a display substrate 72 on which various components such as a microcomputer, a light emitting diode display (LED), and an operation unit are mounted is provided. The display substrate 72 is accommodated in an accommodation space 74 formed between a concave portion 73 formed near the front of the upper surface of the outer lid 52 and an operation panel 68 covering the upper surface opening of the concave portion 72. The lid heater 69 has a cord shape (linear shape), is located on the back surface, that is, the upper surface of the heat radiating plate 53 inside the lid body 51, and is provided on the surface facing the pan 5, which is as close as possible to the area directly below the display substrate 71. . The method of heating the inner surface of the lid 51 directly facing the pan 5 may be a cord-shaped electric heater as in the present embodiment or a method of heating the inner surface of the lid 51 by electromagnetic induction.

The lid heater 69 is provided in an arrangement space for disposing the lid heater 69 formed between the heat radiating plate 53 and the bottom member 75 of the recess 73.
It is stored in 76. Therefore, the display substrate 72 and the lid heater
The gap between the recess 69 and the bottom 69 is isolated by a bottom member 75 of the recess 73. An arrangement space 76 for the lid heater 69 and a gap 77 formed in the rear part of the lid 51 to accommodate the hinge shaft 55, that is, a gap 77 communicating between the inside and the outside of the lid 51, are formed inside the lid 51. The structure is such that they are communicated by the communication passage 78.
The upper part of the radiator plate 53 inside the lid 51 is a radiator plate.
A partition member 79 formed by the outer lid cover 54 for fixing the 53 is arranged, and an arrangement space 76 for the lid heater 69 is formed between the partition member 79 and the heat radiating plate 53. Therefore, the lid
Inside 51, a partition member 79 substantially horizontally partitions the outer lid 52 and the lid heater 69 provided on the back surface of the heat sink 53, and the partition between the display substrate 72 and the lid heater 69 is Element
In addition to 79, the bottom member 75, which is another partition member, has a structure that is partitioned in a substantially horizontal direction.

The communication passage 78 has a steam discharge hole 80 for discharging steam generated from the cooked food in the pot 5 to the outside of the main body 1 at the time of cooking rice, and a steam discharge hole communicating with the steam discharge hole 80. 80
Steam port as a detachable steam passage above the roof
Part of 81 is located. The steam port 81 is formed near the rear of the upper surface of the outer lid 52, and is detachably provided at the inner bottom of the concave portion 82 which is depressed toward the pot 5. 83 is a central hole 84 of the concave portion 82
And a steam port packing that communicates with the steam holes 85 formed in the inner lid 57. This steam port packing 83 is elastically deformable 2
In order to seal the back side of the bottom of the concave portion 82 located around the center hole 84 and the back side of the inner lid 57 located around the steam hole 85, the heat sink 53 and the center hole 84 are attached. ing. Note that the lid heater 69 is disposed so as to substantially surround the periphery of the steam port 81 in order to prevent the generation of putrefaction odor due to cooling inside.

When the temperature of the inner lid 57 is detected by the lid temperature sensor 70 as in this embodiment, an opening 86 is formed at a portion corresponding to the partition member 79 forming the outer lid cover 54, and the lid 86 is formed. The heat-sensitive part of the temperature sensor 70 is pressed against the inner lid 57 by a spring (not shown) as an elastic member. And the partition member 79
The space around the lid temperature sensor 70 and the gap 77 between the hinge shafts 55 communicate with each other through an opening 86 formed in the hinge shaft 55. An inner lid facing the upper opening of the pot 5 and serving as the lower face of the lid 51
A lid packing 88 for closing a gap with the main body 1 when the lid 51 is closed is provided in an annular shape around the outer periphery of the 57. The lid packing 53 is made of an elastically deformable member, and is specifically made of silicone rubber or fluorine rubber. When the pot 5 is provided inside the main body 1 as in the present embodiment and rice is cooked or kept warm in the pot 5, the lid packing 88 is brought into contact with the upper surface of the pan 5, and the lid 51 and the main body 1 are placed. What is necessary is just to prevent vapor from leaking out from the gap between the first and the second.

At the time of cooking rice, the pot 5 is heated by electromagnetic induction, and the amount of heating to the pot 5 is adjusted based on the temperature detected by the pot temperature sensor 14 and the lid temperature sensor 70 and time management. Specifically, when cooking rice, the rice and water to be cooked put in the pot 5 are heated, and the pot temperature sensor 14 for detecting the temperature of the pot 5 reaches a predetermined cooking temperature (for example, 120 ° C.). Heating is stopped and the process shifts to spots. The spots are continued for 15 minutes to cook rice in the pot 5. In addition, warming heating is performed subsequent to cooking rice heating. This heat insulation heating
Is heated by electromagnetic induction to adjust the amount of heating to the pan 5 based on the temperature detected by the pan temperature sensor 14 and the lid temperature sensor 70 and the time management, and the temperature of the pan 5 detected by the pan temperature sensor 14 Is maintained at 60 ° C to 80 ° C. At this time, based on the temperature detected by the lid temperature sensor 70, the temperature of the inner surface of the lid 51 is maintained slightly higher than the temperature of the rice in the pan 5.

Although not shown, the apparatus is provided with a power supply voltage detecting means for detecting the power supply voltage supplied to the main body 1 at the time of cooking and maintaining the temperature, and detects the power supply voltage. The configuration is such that the current value of the heating coil 11 is adjusted so that the heating output at the time of voltage (for example, AC 100 V) is kept. For example, if the heating output of the heating coil 11 is 500 W at the rated power supply voltage of 100 V at the time of heat retention, even if the power supply voltage fluctuates to 90 V or 110 V, the heating output at the rated voltage of 500 W can be kept. In addition, even when there is a difference in power supply voltage for each home or a voltage fluctuation due to a voltage drop during use, the temperature can be maintained with a stable heating amount. Also, during cooking rice, lid heater
The lid 51 is heated by 69, and the inner surface of the lid 51,
Dew condensation on 57 is reduced, and when the lid 51 is opened at the end of rice cooking, the phenomenon that dew flows from the lid 51 to the upper part of the main body 1 is suppressed.

FIG. 3 is a schematic diagram of a heat retaining pot showing a flow of hot air in the present embodiment. Note that the flow of hot air from the lid heater 69 is indicated by arrows. In the figure, a gap 91 through which the radiant heat of the lid heater 69 passes is formed around the vapor discharge hole 80 and the vapor port 81. Also, the lid heater
Excess heat from 69 is used as a discharge port communicating with the gap 91.
It passes through 77 and is released outside. At this time, the gap 77 is formed behind the lid 51 so that the display substrate 73 provided in front of the lid 51 does not hit the passage of radiant heat from the lid heater 69.

As described above, in the above embodiment, the operation panel in which the transparent window 66 is provided on the upper surface of the outer lid 52 forming the lid 51
A display substrate 72 is provided between the operation panel 68 and the heat radiating plate 53 forming the lower surface of the lid 51, and the lower part of the display substrate 72 is located on the heat radiating plate 53 inside the lid 51 as much as possible. A lid heater 69 as a lid heating means for heating the heat radiating plate 53 is disposed at a position on the surface facing the pot 5 that has been avoided. By arranging the lid heater 69 at a position as far as possible below the display substrate 72 as described above, the display substrate 72 is less affected by radiant heat upward from the lid heater 69, and the temperature around the display substrate 72 is reduced. The rise is suppressed. Therefore, dew condensation on the inner surface of the transparent window 66 due to a temperature difference between the inside and the outside of the transparent window 66 above the display substrate 72 can be suppressed. As a result, the transparent window 66 is not particularly suitable in winter, when the outside temperature is low and the transparent window 66 is likely to be low in temperature, or in a use environment where the cool air of the air conditioner easily hits the transparent window 66 of the operation panel 68. The fogging of the display portion when it is easy to cool can be suppressed, the visibility is improved, and the usability can be improved. The lid heater 69 is a heat sink
Since it is provided on the surface facing the pot 5 of 53, when cooking rice or keeping warm, the inner lid 57 is heated by the radiator plate 53 or radiant heat from the radiator plate 53 with a uniform temperature distribution as in the past. Can be. Therefore, the heating of the lower surface of the lid 51 during cooking and keeping the temperature uniform is maintained as before, and the thermal effect of the lid heater 69 on the display substrate 72 is reduced.
Dew condensation on the 68 display window 66 can be suppressed.

In this embodiment, in this embodiment, the space 74 for accommodating the display substrate 72 and the space for disposing the lid heater 69 are provided.
Since the cover 76 is isolated inside the cover 51, an effect that the display substrate 72 is less likely to be affected by the heat from the cover heater 69 can be obtained. Further, a communication path 78 for communicating between a space 76 for disposing the lid heater 69 and a gap 77 communicating between the inside and outside of the lid 51 of a hinge shaft 55 serving as a hinge part which is provided at the rear of the lid 51 and supports the lid 51 to the main body 1. Is formed, the heat released upward from the lid heater 69,
It is released from the gap of the hinge shaft 55 to the outside of the lid 51. Therefore, it is difficult for hot air to stay inside the lid 51, and furthermore, the display substrate
It is possible to suppress a rise in the temperature of the accommodation space 74 of the 72 and effectively reduce the dew condensation on the inner surface of the transparent window 66.

By the way, if the heat retention time is long, the rot of rice in the pot 5 becomes a problem. The temperature of the rice is about 70
It is maintained at ~ 76 ° C, and the temperature environment is such that Bacillus subtilis, which has the most adverse effect on the putrefactive bacteria that cause putrefaction of rice, is difficult to proliferate, but the steam discharge holes 80 that are always in communication with the outside air When the temperature inside the steam passage such as the steam outlet 81 becomes about 50 ° C. or less, starch and the like accumulated in the steam passage become nutrients, causing decay in the steam passage, and furthermore, being transmitted to the rice inside the pot 5. There is a problem that rice is spoiled. Especially in winter, the outside temperature is low, and this problem is likely to occur. However, in the present embodiment, a steam passage (steam discharge hole 80 or steam discharge hole 80) for discharging steam generated from the inside of the main body 1 to the outside of the main body 1 during cooking rice is provided in a communication passage 78 through which heat from the lid heater 69 passes through the hinge shaft 55. Since the mouth 81) is provided, the steam passage is always heated even during the heat insulation, and it is possible to prevent the steam passage from being cooled in winter, and to prevent the rice in the pot 5 from being putrefactive.

Further, in this embodiment, the lid heater 69 is formed in a cord shape and is disposed around a steam passage for discharging steam to the outside of the main body 1. Therefore, the radiant heat upward from the lid heater 69 can be supplied to the steam passage, and it is possible to prevent the rice in the pot 5 from being spoiled due to a temperature drop in the steam passage.

In this embodiment, an operation panel 68 having a transparent window 66 provided on the upper surface of the outer lid 52 forming the lid 51 is provided, and the operation panel 68 and a heat radiating plate 53 forming the lower surface of the lid 51 are provided. The display board 72 is provided between the heat sinks 53 and the heat sink 53 inside the lid 51.
A lid heater 69 for heating the heater 53 is provided, and a partition member (bottom member 75, partition member 79) for partitioning between the lid heater 69 and the outer lid 52 is provided, and a partition between the display substrate 72 and the lid heater 69 is provided. More members (bottom member 75, partition member 79) are provided than partition members 79 between the lid heater 69 and the outer lid 52 in other portions. In this case, dew condensation occurs on the portion where the display substrate 72 does not exist.However, since the rear surface of the outer surface of the outer lid 52 where the display substrate 72 exists is provided with a large number of partition members, an environment where dew condensation hardly occurs is provided. Dew condensation on the inner surface of the transparent window 66 due to a temperature difference between the inside and the outside of the transparent window 66 on the upper side can be suppressed. As a result, the transparent window 66 is not particularly suitable in winter, when the outside temperature is low and the transparent window 66 is likely to be low in temperature, or in a usage environment where the cool air of the air conditioner easily hits the transparent window 66 of the operation panel 68. The fogging of the display portion when it is easy to cool can be suppressed, and the visibility can be improved, and the usability can be improved. Further, since more partition members are provided between the display substrate 72 and the lid heater 69 than other portions, the display substrate 72 is less susceptible to the influence of radiant heat upward from the lid heater 69, and The temperature rise around the substrate 72 is suppressed.
Moreover, since the lid heater 69 is arranged on the heat sink 53,
At the time of cooking rice and keeping the temperature, the inner lid 57 can be heated by the heat radiating plate 53 or radiant heat from the heat radiating plate 53 with a uniform temperature distribution as in the related art. Therefore, while heating the lower surface of the lid 51 at the time of cooking or keeping the temperature uniform, as in the related art, the thermal influence on the display substrate 72 by the lid heater 69 is reduced,
Dew condensation on the display window 66 of the operation panel 68 can be suppressed.

In such a configuration, in this embodiment, a liquid crystal display 71 is provided on the display substrate 72 so as to face the transparent window 66 of the operation panel 68. In this case, the liquid crystal display 71 does not self-illuminate, but reflects the light from the transparent window 66 to confirm the display.However, since the transparent window 66 is hardly fogged, the transparent window 66 It is possible to eliminate the difficulty of seeing the display unique to the liquid crystal display 71 when fogging occurs.

In this embodiment, an inner lid 57 that directly covers the pot 5 is provided below the heat sink 53 that forms the lower surface of the lid 51.
Inside, a lid heater that heats the radiator plate 53 during cooking and keeping warm
69, and an outer lid 52 forming an outline of the lid heater 69 and the lid body 51.
And a lid temperature sensor 70 for detecting the temperature of the inner lid 57.An opening 86 is provided in the partition member 79 near the lid temperature sensor 70, and the opening 86 and the lid are provided. body
A communication passage 78 is formed at the rear portion of the hinge shaft 55 that supports the lid 51 to the main body 1 and communicates with a gap 77 communicating the inside and outside of the lid 51.

In this case, the radiant heat from the lid heater 69 is released from the opening 86 to the outside of the lid 51 through the gap between the hinge shaft 55, so that the lid temperature sensor 70 is affected by the radiant heat from the lid heater 69. The temperature of the inner lid 57 can be accurately detected. Therefore, it is possible to prevent the inner lid 57 from being overheated at the time of cooking rice or keeping warm, and to stably heat the inner lid 57.
In addition, it is possible to prevent energy from being overheated and to ensure energy saving, and to suppress drying of the upper surface of rice caused by excessive heating of the inner lid 57 and stickiness due to dew condensation on the inner periphery of the pot 5 during heat retention.

Further, since the opening 86 is formed in the partition member 79 near the lid temperature sensor 70, the lid temperature sensor 70
The rise in temperature of the surrounding partition member 79 in which is installed can also be suppressed. Therefore, if the cover temperature sensor 70 is installed on the partition member 79, it is possible to prevent the mounting position of the cover temperature sensor 70 from fluctuating due to thermal deformation of the mounting member, and to stably apply the cover temperature sensor 70 to the inner cover 57. Can be in contact.

Further, in this embodiment, an operation panel 68 provided with a transparent window 66 on the upper surface of the outer lid 52 forming the lid 51 is provided, and a heat radiation forming the lower surface of the operation panel 68 and the lid 51 is provided. A display substrate 72 is provided between the plate 51 and the heat sink 53 inside the lid 51.
A lid heater 69 for heating the heat radiating plate 53 is provided, a partition member 79 is provided between the display substrate 72 and the lid heater 69, and the lid body 51 is provided.
A steam discharge hole 80 for discharging the steam in the pan 5 is provided in the pan 5, and a detachable steam port 81 is provided in the steam discharge hole 80.
Alternatively, a gap 91 through which the radiant heat of the lid heater 69 passes is formed around the outer periphery of the steam port 81 or the outer periphery of both the steam discharge hole 80 and the steam port 81.

In this case, by providing the partition member 79 between the display substrate 72 and the lid heater 69, the display substrate 72 is less susceptible to radiant heat upward from the lid heater 69,
The temperature rise around the display substrate 72 is suppressed. Therefore,
Dew condensation on the inner surface of the transparent window 66 due to a temperature difference between the inside and the outside of the transparent window 66 above the display substrate 72 can be suppressed. In addition, a rise in the temperature of the components mounted on the display substrate 72 can be suppressed. Lid heater
By passing the hot air generated from 69 through the gap 91, the inside of the steam discharge hole 80 and the steam port 81 can be maintained at a predetermined temperature without cooling. Therefore, there is a problem that the rice in the pot 5 directly below the steam discharge hole 80 is locally cooled, and the stored portion in the steam port during the rice cooking cools down while keeping the temperature warm and rots, causing a rotten smell. Can be wiped out.

In such a configuration, in the present embodiment, the display substrate 72 is provided in front of the lid 51, and a discharge port (gap 77) communicating with the gap 91 is formed behind the lid 51. I have. In this case, the excess heat inside the lid 51 is
, And the temperature of the display substrate 72 can be further suppressed. Further, since the display substrate 72 is located at a position where the radiant heat from the lid heater 69 does not directly hit, the heat influence on the display substrate 72 can be effectively reduced also in this regard.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention.

[0061]

According to the first aspect of the present invention, there is provided an insulated pot having an operation panel provided with a transparent window on an upper surface of an outer lid forming a lid, and forming the operation panel and a lower surface of the lid. A display substrate is provided between the lid lower surface member and the lid lower surface member, which is located on the lid lower surface member inside the lid body and faces a pan avoiding a lower portion of the display substrate as much as possible. The lid heating means is disposed, and the heating of the lower surface of the lid during cooking and keeping the temperature is uniform as before, while reducing the thermal influence on the display substrate by the lid heating means, and the operation panel. The dew condensation on the display window can be suppressed.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, in addition to the configuration of the first aspect, the space for accommodating the display substrate and the space for disposing the lid heating means are separated inside the lid, and the lid heating is performed. In this case, a communication path is formed that communicates the arrangement space of the means and a gap in the rear portion of the lid, which communicates with the outside of the lid inside of the lid of a hinge portion that pivotally supports the lid to the main body. The display substrate is less likely to be affected by heat from the lid heating means, and dew condensation on the inner surface of the transparent window can be effectively reduced.

According to a third aspect of the present invention, there is provided the warming pot according to the second aspect, wherein the communication passage is provided with a steam passage for discharging steam generated from inside the main body to outside of the main body during rice cooking. In this case, furthermore, it is possible to prevent the steam passage from cooling down and prevent the rice in the pot from being putrefactive.

According to a fourth aspect of the present invention, there is provided the insulated pot according to any one of the first to third aspects, wherein the lid heating means has a cord-like shape and discharges steam to the outside of the main body. It is arranged around the steam passage, and in this case, furthermore, it is possible to prevent the rot of the rice in the pot due to the temperature drop in the steam passage.

According to a fifth aspect of the present invention, there is provided an insulated pot having an operation panel provided with a transparent window on an upper surface of an outer lid forming a lid, and an operation panel and a lower surface of the lid forming a lower surface of the lid. A display substrate is provided between the lid member and a lid heating means for heating the lid lower surface member on the lid lower surface member inside the lid body,
A partition member for partitioning between the lid heating means and the outer lid is provided, and the partition member between the display substrate and the lid heating means is provided between the other lid heating means and the outer lid. It is provided more than the partition member, and while heating the lower surface of the lid at the time of cooking rice or keeping the temperature uniform as before, the thermal influence on the display substrate by the lid heating means is reduced, and the operation is performed. Dew condensation on the display window of the panel can be suppressed.

According to a sixth aspect of the present invention, in addition to the configuration of the fifth aspect, in addition to the configuration of the fifth aspect, a liquid crystal display is provided on the display substrate so as to face the transparent window of the operation panel.
This makes it possible to eliminate the difficulty of seeing the display peculiar to the liquid crystal display when fogging occurs in the transparent window.

[0067] The warming pot according to claim 7 of the present invention is provided with an inner lid that directly covers the pan below a lower surface member that forms the lower surface of the lid, and the inside of the lid is used for cooking rice and keeping warm. Lid heating means for heating the lid lower surface member, and a partition member for partitioning between the lid heating means and an outer lid forming an outer shell of the lid body,
Lid temperature detecting means for detecting the temperature of the inner lid, an opening is provided in the partition member near the lid temperature detecting means, and the lid is provided at the opening and at the rear of the lid to form a main body. A communication passage communicating with a gap communicating with the inside and outside of the lid inside of the hinge portion which is pivotally supported by the hinge portion, and reducing the thermal influence on the lid temperature detection means by the lid heating means to detect the temperature of the inner lid. Is performed with high accuracy, it is possible to prevent the inner lid from being overheated at the time of cooking rice or keeping warm, and to perform stable heating of the inner lid.

According to an eighth aspect of the present invention, in addition to the configuration of the seventh aspect, in addition to the configuration of the seventh aspect, the lid temperature detecting means is provided on the partition member. In this case, the inner lid is further stably provided. Can be brought into contact with the lid temperature detecting means.

According to a ninth aspect of the present invention, there is provided an insulated pot having an operation panel provided with a transparent window on an upper surface of an outer lid forming a lid, and a lower surface of the lid forming the operation panel and a lower surface of the lid. A display substrate is provided between the lid member and a lid heating means for heating the lid lower surface member on the lid lower surface member inside the lid body,
A partition member is provided between the display substrate and the lid heating means, a vapor discharge hole for releasing vapor in the pan is provided on the lid body, and a detachable vapor port is provided in the vapor discharge hole; A hole or a hole around the outer periphery of the hole or the vapor port is formed with a gap through which the radiant heat of the lid heating means passes, and while preventing the cooling of the vapor discharge hole and the vapor port,
The influence of heat on the display substrate by the lid heating means can be reduced, and the temperature rise of components mounted on the display substrate can be prevented. In addition, dew condensation on the display window of the operation panel can be suppressed.

According to a tenth aspect of the present invention, in addition to the configuration of the ninth aspect, in addition to the configuration of the ninth aspect, a display substrate is provided in front of the lid, and a discharge port communicating with the gap is provided behind the lid. In this case, the temperature rise inside the lid can be suppressed, and the influence of heat on the display substrate can be effectively reduced.

[Brief description of the drawings]

FIG. 1 is an overall cross-sectional view of a warming pot showing one embodiment of the present invention.

FIG. 2 is a bottom view in a state where the upper bottom plate is removed.

FIG. 3 is an overall sectional view of a heat retaining pot showing a modification of the above.

[Explanation of symbols]

 1 Main body 5 Pot 51 Lid 52 Outer lid 53 Heat sink (Liquid lower surface member) 55 Hinge axis (Hinge) 66 Transparent window 68 Operation panel 69 Lid heater (Lid heating means) 70 Lid temperature sensor (Lid temperature detecting means) 71 Liquid crystal display 72 Display board 74 Housing space 75 Bottom member (partition member) 76 Arrangement space 77 Gap (discharge port) 78 Communication path 79 Partition member 80 Steam discharge hole (steam passage) 81 Steam port (steam passage) 86 Opening 91 gap

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takashi Tsurumaki 2570-1, Gosuda, Oaza, Kamo-shi, Niigata Toshiba Home Techno Co., Ltd. Inside Techno Co., Ltd. (72) Inventor Hiroyuki Takeishi 2570-1 Gosuda, Kamo-shi, Niigata Toshiba F-term (reference) 4B055 AA02 BA02 BA13 BA16 CA21 CA22 CA62 CA65 CA71 CA73 CB08 CC16 CC44 CD02 CD41 DA04 DB02 DB22

Claims (10)

[Claims] An operation panel provided with a transparent window on an upper surface of an outer lid forming a lid, and a display substrate provided between the operation panel and a lower surface member forming a lower surface of the lid. A lid heating means for heating the lid lower surface member is disposed on the surface of the lid lower surface member inside the lid body facing the pan which avoids the lower portion of the display substrate as much as possible. Kettle. 2. A housing for accommodating said display substrate and a space for disposing said lid heating means are separated inside said lid, and said lid is pivotally mounted on a main body in a space for disposing said lid heating means and a rear part of said lid. 2. The heat insulation pot according to claim 1, wherein a communication passage is formed to communicate with a gap of the supporting hinge portion communicating with the inside and outside of the lid. 3. The heat insulation kettle according to claim 2, wherein a steam passage for discharging steam generated from inside the main body at the time of cooking rice to the outside of the main body is provided in the communication passage. 4. The apparatus according to claim 1, wherein the lid heating means has a cord shape and is disposed around a steam passage for discharging steam to the outside of the main body. Heating pot. 5. An operation panel provided with a transparent window on an upper surface of an outer lid forming a lid, a display substrate is provided between the operation panel and a lid lower surface member forming a lower surface of the lid. A lid heating means for heating the lid lower surface member is disposed on the lid lower surface member inside the lid body, a partition member for partitioning between the lid heating means and the outer lid is provided, and the display substrate and the lid heating means are provided. A plurality of the partition members provided between the outer lid and the other lid heating means and the outer lid. 6. The heat-insulating pot according to claim 5, wherein a liquid crystal display is provided on the display substrate so as to face the transparent window of the operation panel. 7. A lid heating means for providing an inner lid directly covering a pan below a lid lower surface member forming a lower surface of the lid body, wherein the lid heating means heats the lid lower surface member during rice cooking and warming. A partition member for partitioning between the lid heating means and an outer lid forming an outline of the lid, and a lid temperature detecting means for detecting a temperature of the inner lid, which is located near the lid temperature detecting means. An opening is provided in the partition member, and a communication passage communicating between the opening and a gap at a rear portion of the lid, which supports the lid to a main body and communicates with the inside and outside of the lid, is formed. Heating pot characterized by the following. 8. The heating oven according to claim 7, wherein said lid temperature detecting means is provided on said partition member. 9. An operation panel having a transparent window provided on an upper surface of an outer lid forming a lid, a display substrate is provided between the operation panel and a lid lower surface member forming a lower surface of the lid. A lid heating means for heating the lid lower surface member is disposed on the lid lower surface member inside the lid body, a partition member is provided between the display substrate and the lid heating means, and steam in the pot is supplied to the lid body. A vapor discharge hole for discharging is provided, and a detachable vapor port is provided in the vapor discharge hole, and a gap through which the radiant heat of the lid heating means passes is formed in the vapor discharge hole and / or the outer periphery of the vapor port. Heating pot characterized by the following. 10. The heat insulation pot according to claim 9, wherein the display substrate is provided in front of the lid, and a discharge port communicating with the gap is formed behind the lid.