JP2010112586A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safe heating cooker having effective heating performance and cooking performance, and capable of preventing mixing of foreign matters such as glass pieces into a heated object even when a glass tube of a glass tube heater is broken. <P>SOLUTION: This heating cooker includes a loading means 7 for loading the heated object 30, a heating chamber 1 receiving the loading means 7, a pan 6 disposed at a lower part of the loading means 7, and one or a plurality of heaters disposed in the heating chamber 1 and heating the heated object 30. At least one of the heaters is composed of the glass tube heater, and disposed on a side face of the heating chamber 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a heating cooker.

  Conventionally, regarding a heating cooker, “A heater guard for preventing damage to the heater has been placed under the heater attached to the ceiling wall and within the heat ray irradiation range that directly irradiates the food from the heater. As a technique to reduce the amount of heat rays irradiated to food, and the food surface was mottled by that amount, the appearance when cooking was completed was deteriorated. When the heating chamber 2 having the wall 7, the recess 7 is provided in the ceiling wall 7 of the heating chamber 2, the heater storage chamber 15 for storing the heater 16, and the food 10 are placed in the approximate center of the heating chamber 2 The heater guard 19 for protecting the heater 10 from damage is disposed at a position outside the heat ray irradiation range α where the food 16 is directly irradiated from the heater 16. ] Has been proposed (Patent Document 1).

JP 2002-711144 A (summary)

In the technique described in Patent Document 1, by placing the heater guard 19 in the vicinity of the heater 16, there is a probability that the food 10, the container, the user's hand when placing the food 10, etc. will contact the heater 16. descend. Therefore, the probability that the heater 16 is damaged is lowered.
However, on the other hand, the cause of cracks that do not involve direct contact with the heater 16, such as dropping of the main body when installing the cooker main body, vibration of the casing, thermal stress due to heating of the heater 16 and its peripheral components, etc. Therefore, the heater guard 19 described in Patent Document 1 is not effective.

In addition, since those skilled in the art including the present inventors pay close attention to the cracking of the heater and improve the resistance against the cracking by improving the strength of the heater glass, the probability is Very low.
However, there is still a possibility that foreign matter such as a glass piece is mixed into an object to be heated that is installed immediately below.

On the other hand, the safety of the cooker can be ensured by mounting a metal heater, such as a so-called sheathed heater or nichrome wire heater, which is less likely to be broken or broken. However, it is necessary to consider disconnection and insulation deterioration in a metal heater, and there is a limit to the power that can be input per unit surface area.
Therefore, when compared with glass tube heaters, such as halogen heaters and carbon heaters that are sealed with an inert gas, the temperature is raised to a high temperature that emits a large amount of heat rays in the infrared region effective for cooking. Is difficult.
As a result, the metal heater has a smaller amount of infrared radiation than a glass tube type heater, and a relative decrease in heating performance and cooking performance is inevitable.

  The present invention has been made in order to solve the above-described problems, and has effective heating performance and cooking performance, and even if the glass tube of the glass tube heater is broken, the foreign material such as the glass piece It aims at providing the safe heating cooker which suppresses mixing with to-be-heated material.

  A heating cooker according to the present invention includes a placing means for placing an object to be heated, a heating chamber for storing the placing means, a tray placed below the placing means, and a heating chamber. And one or a plurality of heaters for heating an object to be heated. At least one of the heaters is constituted by a glass tube heater and is installed on a side surface of the heating chamber.

  According to the heating cooker according to the present invention, since the heater constituted by the glass tube heater is installed on the side surface of the heating chamber, even if the glass tube is broken, such as a piece of glass. It can suppress that a foreign material mixes into a to-be-heated material, and can provide a safe heating cooker.

Embodiment 1 FIG.
FIG. 1 is a perspective view of a cooking device 20 according to Embodiment 1 of the present invention. The cooking device 20 according to the present invention is a cooking device that houses and heats an object to be heated in a heating chamber, such as an IH (Induction Heating) cooking heater.

  The cooking device 20 includes an induction heating unit 21 that mainly performs cooking of a pan and a frying pan, a roaster 22 that performs grilling fish, and an operation panel 23 that is operated by a user. Hereinafter, the configuration of the roaster 22 will be mainly described.

FIG. 2 is a front sectional view of the roaster 22.
The heating chamber 1 includes a metal casing and a drawer door 2 described later with reference to FIG. 3, and accommodates and heats the object to be heated 30. The guide rail 36 and the sub guide rail 37 regulate the pulling direction when pulling the drawer door 2 out of the heating chamber 1.

  On the upper part of the guide rail 36 of the drawer door 2, a tray 6 for receiving oil dripping from the heated object 30 and a grill 7 on which the heated object 30 is placed are detachably installed. The saucer 6 prevents dirt in the heating chamber 1 during cooking. The user can remove the tray 6 and the grill 7 and perform cleaning after cooking.

As shown in FIG. 2, the guide rail 36 is provided on the bottom surface in the heating chamber 1. Thereby, compared with the case where a guide rail is installed in the side surface in the heating chamber 1, when installing a glass tube heater, with respect to the side surface in the heating chamber 1, the height on installation may be received. Disappear.
Therefore, for example, it is possible to install a plurality of glass tube heaters on the side surface of the heating chamber 1 or to effectively apply the heat rays of the glass tube heater to the object to be heated 30 from the lower part of the grill net 7.

One upper glass tube heater 8 and one lower glass tube heater 9 are installed on each side of the heating chamber 1.
As shown by broken lines A and B in FIG. 2, the upper glass tube heater 8 and the lower glass tube heater 9 are closest to the grill in the state where the tray 6 and the grill 7 are stored to the deepest part in the heating chamber 1. A space is provided between the surface A and the surface B of the grill 7 closest to the glass tube heater.
As a result, even if the glass is broken, there is no fear that fragments or the like will be mixed into the object 30 to be heated, and it falls to the bottom of the heating chamber 1 or the tray 6, so that the user or the like will use these foreign matters as a mouth. There is no danger.

The lower glass tube heater 9 is above the tray 6 indicated by the broken line C in FIG. 2 and in the height direction in order to heat the back surface of the grill 7, that is, the back surface of the object 30 to be heated. It is installed at a position below the surface to be heated.
Furthermore, the direction with strong directivity of the lower glass tube heater 9 is installed toward a position farther from the center of the grill 7 as viewed from the lower glass tube heater 9.
With the arrangement described above, the irradiation surfaces of the lower glass tube heaters 9 on both the left and right sides overlap each other in the vicinity of the center portion of the grill net 7 and can be heated effectively and uniformly.

  By installing the lower glass tube heater 9 below the grill 7 and above the tray 6, the back surface of the object to be heated 30 can also be baked. Furthermore, even if the lower glass tube heater 9 is broken, there is no risk of debris entering the heated object 30 placed on the grill 7.

  In addition, in the central part of the tray 6, isosceles is seen from the front in order to secure both the installation space of the guide rail 36 and the heat ray reflection effect from the upper glass tube heater 8 and the lower glass tube heater 9. A convex portion 38 having a triangular shape is provided.

Although the heat ray radiated from the lower glass tube heater 9 reaches the tray 6 as well, it is convex to compensate for the relatively low heating performance at the center of the grill 7 as will be described later with reference to FIG. The heat ray is reflected by the portion 38 to improve the heating performance at the center of the grill net 7.
The effect can be further enhanced by configuring the tray 6 with a material having high reflectivity, such as a mirror finish of SUS430 (ferritic stainless steel).

  The convex portion 38 also has a role of positioning when the tray 6 is installed. The tray 6 is fixed in such a manner that the back surface of the convex portion 38 is aligned with the guide rail 36. Thereby, the saucer 6 and the grill 7 can be fixed stably.

The temperature sensor 15 is a sensor for measuring the temperature in the heating chamber 1 and is composed of a thermistor or the like.
The control unit (not shown) of the heating cooker 20 turns off each heater when the set temperature is reached according to the setting / input from the operation unit 23 or the like, and the temperature in the heating chamber 1 is arbitrarily set from the set temperature. When the temperature is lowered, control is performed such as turning on each heater again. Thereby, the to-be-heated material 30 can be heated with sufficient finish.
In addition, when dividing the area | region in the heating chamber 1 and measuring temperature, the temperature of several places in the heating chamber 1 is detected by installing a compound eye infrared sensor in the appropriate position in the heating chamber 1. You can also.

  Further, by applying a heat ray reflective coating (not shown) such as a metal oxide film to the inner part of the heating chamber 1 among the glass of the glass tube heater, the heat rays are reflected to the inner side of the heating chamber 1 so that heat from the glass can be reflected. Leakage can be minimized.

FIG. 3 is an exploded perspective view around the drawer door 2.
The drawer door 2 is composed of the visual recognition window 3 and its frame body, and is fitted to the guide rail 36 and the sub guide rail 37. A tray 6 and a grill 7 are detachably installed on the drawer door 2.
The user can smoothly pull out and store the drawer door 2 from the back of the heating chamber 1 to the front by grasping and pulling the handle 4. Further, the user can visually check the cooking state in the heating chamber 1 from the viewing window 3.

  The “mounting means” in the first embodiment corresponds to the grill net 7.

FIG. 4 is a top view inside the heating chamber 1. The figure shows a heater layout in the heating chamber 1.
When viewed from the top, the upper glass tube heater 8 and the lower glass tube heater 9 are installed at substantially the same position on the side surface of the heating chamber 1.
Although it is possible to sufficiently heat the object to be heated 30 even by heating by radiant heat from the upper glass tube heater 8 and the lower glass tube heater 9, it is possible to correct the heating non-uniformity depending on the installation location of the object to be heated 30 and When it is desired to improve the cooking finish of the heated object 30, a sheathed heater can be used complementarily.

In the example shown in FIG. 4, the upper sheathed heater 31 and the lower sheathed heater 32 are provided to perform heating in a complementary manner.
The upper sheath heater 31 is disposed on the top surface of the heating chamber 1. The lower sheathed heater 32 is disposed at a position that does not interfere with the tray 6 and the grill 7 when the drawer door 2 is stored.

Usually, since the radiation intensity of the heater is affected by the distance, the central portion of the grill 7 tends to be an area that is difficult to be heated.
Further, the upper glass tube heater 8 and the lower glass tube heater 9 are fixed by a spring fixing tool or the like that absorbs a dimensional change due to thermal expansion while fixing a filament as a heat generating portion. Therefore, the entire tube does not become a heating part, and the glass tube end part of about 30 mm becomes a non-heating part in practice.

  That is, in the upper glass tube heater 8 and the lower glass tube heater 9 which are straight tube heaters installed on the side surface of the heating chamber 1, the heating ability of the central portion of the grill 7 is lowered. Moreover, the front part and the rear part of the heating chamber 1 are regions close to the above-described non-heat generating part, and there is a tendency that the heating ability is relatively low as compared with other parts.

Therefore, the upper sheath heater 31 and the lower sheath heater 32 are, as shown in FIG. 4, the front part (lower side in FIG. 4) and the rear part (FIG. 4) of the heating net 7 and thus the heating net 7. 4 is arranged so as to increase the irradiation area with respect to the upper side.
Specifically, for example, the heaters are laid out so that portions corresponding to the front and rear portions of the heat generating portions of the upper sheath heater 31 and the lower sheath heater 32 are laid longer than other portions.
In other words, the heating capacity is improved by relatively reducing the distance from each sheathed heater at the center of the grill 7, and the heating area is increased by increasing the irradiation area of the heat rays by the heater layout at the front and rear. Let Thereby, uniform heating becomes possible.

FIG. 5 is a front sectional view of the upper glass tube heater 8 and the lower glass tube heater 9.
As shown in FIG. 5A, the glass tube heater includes a carbon filament 40, which is a carbon composite material having a purity of 99% or more, and a glass tube 41 made of quartz glass that seals the periphery. An inert gas such as argon is enclosed in the glass tube 41 to prevent deterioration of the carbon filament 40 due to oxidation.

FIG.5 (b) is a figure which shows the radiation intensity distribution of a glass tube heater.
The length of the arrow in FIG.5 (b) has shown the radiation intensity. As shown in the figure, the radiation intensity has an eight-letter distribution showing a strong distribution in the long side direction of the rectangular section with the carbon filament 40 as the center.
As shown in the figure, the carbon filament 40 is cut into a rectangular cross section and generates heat from substantially the entire surface. Therefore, it has a relatively strong radiation distribution in the vertical direction relative to the long side of the rectangle.

FIG. 5C shows a structure in which the glass tube has a double structure in order to increase the strength of the heater.
In addition to the configuration shown in FIG. 5A, by installing the outer glass tube 42, it is possible to protect the glass tube 41, which can be said to be the main body portion of the heater, and to suppress deterioration.
In addition, by providing the glass tube reflection plate 43 in the space between the outer glass tube 42 and the glass tube 41, it becomes possible to perform stronger radiant heating in a desired direction, for example, the direction in which the article 30 to be heated is placed. .
The outer glass tube 42 is intended to protect the glass tube 41 and reduce the possibility of deterioration by lowering the surface temperature of the outer glass tube 42, and is not necessarily between the glass tube 41 and the outer glass tube 42. There is no need to seal with an inert gas or the like.

  The strong radiation directions of the carbon filaments 40 of the upper glass tube heater 8 and the lower glass tube heater 9, that is, the vertical direction with respect to the long side of the cross-sectional rectangle are angled toward the upper surface and the lower surface of the grill 7 respectively. Installed. Thereby, it becomes possible to carry out radiation heating aiming at the to-be-heated material 30. FIG.

Embodiment 2. FIG.
In the first embodiment, a glass tube heater is provided on the side surface of the heating chamber 1 and is disposed so as to avoid a position directly above the object to be heated 30, so that even if the glass tube breaks, the fragments etc. are mixed into the object to be heated 30. Configured not to do.
In the second embodiment of the present invention, another configuration example around the glass tube heater will be described. Since the other configuration is the same as that of the first embodiment, the following description will focus on the differences.

FIG. 6 is a front sectional view of the roaster 22 in the second embodiment.
On the side surface of the heating chamber 1, there is provided a heater accommodating portion 18 that accommodates the upper glass tube heater 8 and the lower glass tube heater 9.
The heater accommodating portion 18 is formed by projecting the side surface of the heating chamber 1 outwardly in a convex shape. A heater cover 33 serving as a heater cover for protecting the stored glass tube heater is disposed inside the heating chamber 1 of the heater storage portion 18.

As an example, the heater cover 33 is formed of a plate using quartz glass or transparent mica, which is an infrared transmitting material. As another example, a multi-opening metal plate (not shown) such as a punching metal may be used.
Thereby, the effect of improving durability of both glass tube heaters can be acquired, maintaining the heating performance by infrared rays.

  The heater cover 33 is disposed so as to close the opening of the heater housing 18 and is formed so that the inner surface of the heating chamber 1 is substantially flat. Therefore, since there is no unevenness on the inner side of the side surface of the heating chamber 1, the user can easily clean the inside of the heating chamber 1, and there is an excellent design effect.

  In this Embodiment 2, since the space between a glass tube heater and the to-be-heated material 30 can be taken larger than Embodiment 1, the possibility that foreign materials, such as a glass piece, mix in the to-be-heated material 30 further. Can be reduced.

  In the second embodiment, the heater cover 33 also has a function of preventing glass fragments and the like from falling, so that safety can be further improved.

Embodiment 3 FIG.
In the second embodiment, the configuration example in which the heater housing portion 18 is provided on the side surface of the heating chamber 1 and the glass tube heater is housed therein has been described.
In the third embodiment of the present invention, another configuration example in the heater accommodating portion 18 will be described. Since other configurations are the same as those of the second embodiment, the following description will focus on the differences.

FIG. 7 is a front sectional view of the roaster 22 according to the third embodiment.
The upper glass tube heater 8 and the lower glass tube heater 9 are accommodated in the upper and lower heater accommodating portions 18 on the side surface of the heating chamber 1 as in the second embodiment. In addition, a reflective plate 25, which is a metal elastic body having a high reflectance (for example, about 0.9) with surface polishing or the like, is installed at a position corresponding to the back surface of the glass tube heater in the heater housing 18.

FIG. 8 is an enlarged view of a portion A shown in FIG.
The reflector 25 is provided with a heater fixture 26 for fixing the upper glass tube heater 8 or the lower glass tube heater 9. Thereby, it can comprise as a heater unit which integrated the glass tube heater, the reflecting plate 25, and the heater fixture 26. FIG.

The heater fixture 26 is made of an elastic metal. Thus, by absorbing the thermal expansion of the glass tube heater and the reflecting plate 25, it is possible to have an effect of releasing stress on the glass tube heater.
The heater fixture 26 has a structure that supports the non-heat generating portion of the upper glass tube heater 8 or the lower glass tube heater 9. Further, the portion that comes into contact with the glass is covered with a heat-resistant material such as silicon to prevent scratches.

  At the end of the reflection plate 25, an upright piece 27 can be provided to prevent the glass from being broken and falling to the heating chamber 1 side if the glass is broken. Thereby, it becomes possible to improve safety | security more. The standing piece 27 can also be configured as a part of the heater unit.

  The reflector 25, the heater fixture 26, the upright piece 27, the upper glass tube heater 8, and the lower glass tube heater 9 configured as an integral heater unit are each pulled from the inside of the heating chamber 1 to the near side, thereby heating the chamber. It is possible to remove from 1. For this reason, it is possible to perform component replacement, cleaning, and the like as necessary.

  In addition, you may comprise the heating chamber 1 inner surface side of the heater accommodating part 18 so that substantially the same plane as the heating chamber 1 inner surface may be formed similarly to Embodiment 1. FIG. 7 shows an example in which they are configured on substantially the same plane, and FIG. 8 shows an example in which they are not on the same plane.

  In the third embodiment, the heater cover 33 described in the second embodiment may be provided in the heater storage chamber 18. Thereby, a glass tube heater can be reliably protected from an unexpected contact.

Embodiment 4 FIG.
In the fourth embodiment of the present invention, a configuration that can efficiently irradiate the object 30 with heat rays from a glass tube heater will be described. Since the other configuration is the same as that of the first embodiment, the following description will focus on the differences.

FIG. 9 is a front sectional view of the roaster 22 according to the fourth embodiment.
Similar to the first embodiment, an upper glass tube heater 8 and a lower glass tube heater 9 are respectively installed on the upper and lower portions of the side surface of the heating chamber 1.
The grill 7 has a shape that can be installed to be inclined with respect to the bottom surface of the heating chamber 1 by changing the length of the legs serving as the support portions on both sides.

  If the inclination angle of the grill 7 is too large, the article 30 to be heated may slip off, so it is preferably about 15 ° or less. In addition, the inclination of the grill 7 is configured so that it can be installed either to the right or to the left.

By inclining the grill 7, heat rays from the lower right glass tube heater 9 and the upper left upper glass tube heater 8 shown in FIG. 9 are efficiently irradiated to the object to be heated 30. There is an effect of increasing performance.
Moreover, in the same installation state, by energizing only the lower glass tube heater 9 at the lower right and the upper glass tube heater 8 at the upper left, it is not necessary to energize other heaters, not only improving the uniform heating performance, This also contributes to longer heater life and energy saving.

  In the fourth embodiment, in addition to the configuration described in the first embodiment, an example in which the grill net 7 can be newly tilted has been described. However, the other embodiments are similarly fired. By allowing the net 7 to be inclined, the same effect as in the fourth embodiment can be exhibited.

Embodiment 5 FIG.
In the fifth embodiment of the present invention, another configuration example of the grill 7 will be described. Since the other configuration is the same as that of the fourth embodiment, the following description will focus on differences.

FIG. 10 is a front sectional view of the roaster 22 according to the fifth embodiment.
Similar to the fourth embodiment, an upper glass tube heater 8 and a lower glass tube heater 9 are respectively installed on the upper and lower portions of the side surface of the heating chamber 1.
The grill net 7 has a central portion with the highest shape, and the left and right end portions are lowered to provide an inclination.
Thereby, it becomes easy for the heat rays from the glass tube heaters to hit the object 30 to be heated on the grill 7 vertically, and the area to be heated of the object 30 to be heated can be widened.

  In particular, it is possible to efficiently irradiate the central portion of the lower surface of the object to be heated 30 where the heat rays from the lower glass tube heater 9 are difficult to reach, and the rear surface of the object to be heated 30 can be efficiently heated.

  In the fifth embodiment, in addition to the configuration described in the first embodiment, a configuration in which the central portion of the grill 7 is newly raised has been described. However, the configuration of the grill 7 described in the fifth embodiment is described. Can also be used in other embodiments.

It is a perspective view of the heating cooker 20 according to the first embodiment. 3 is a front sectional view of the roaster 22. FIG. It is a disassembled perspective view of the drawer door 2 periphery. 3 is a top view inside the heating chamber 1. FIG. 3 is a front sectional view of an upper glass tube heater 8 and a lower glass tube heater 9. FIG. 6 is a front sectional view of a roaster 22 in a second embodiment. FIG. 6 is a front sectional view of a roaster 22 in a third embodiment. FIG. It is an enlarged view of the A section shown in FIG. 6 is a front sectional view of a roaster 22 in a fourth embodiment. FIG. 10 is a front sectional view of a roaster 22 in a fifth embodiment. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Heating chamber, 2 drawer doors, 3 viewing window, 4 handle, 6 saucer, 7 grill, 8 upper glass tube heater, 9 lower glass tube heater, 15 temperature sensor, 18 heater storage, 20 heating cooker, 21 induction Heating unit, 22 Roaster, 23 Operation unit, 25 Reflector, 26 Heater fixture, 27 Standing piece, 30 Heated object, 31 Upper sheathed heater, 32 Lower sheathed heater, 33 Heater cover, 34 Heat ray irradiation range, 36 Guide rail 37 Sub guide rail, 40 carbon filament, 41 glass tube, 42 outer glass tube.

Claims (20)

A placing means for placing an object to be heated;
A heating chamber for storing the placing means;
A saucer disposed below the placing means;
One or more heaters installed in the heating chamber for heating an object to be heated;
With
At least one of the heaters is composed of a glass tube heater, and is installed on a side surface of the heating chamber. The glass tube heater installed on the side of the heating chamber is
The heating cooker according to claim 1, wherein when the placing device is stored in the heating chamber, the heating chamber is installed at a position that does not overlap with the placing device when the heating chamber is viewed from above. At least one of the glass tube heaters installed on the side surface of the heating chamber is:
The cooking device according to claim 1 or 2, wherein when the placing means is stored in the heating chamber, the placing means is installed at a position above the tray and below the placing means. . The radiation distribution of the glass tube heater is
The cooking device according to claim 3, wherein the back surface of the placing means has strong directivity in a state where the placing means and the tray are stored in the heating chamber. At least one of the glass tube heaters installed on the side surface of the heating chamber is installed above the placing means,
The radiation distribution has strong directivity on the surface of the mounting means in a state where the mounting means and the tray are stored in the heating chamber. Cooking device. In the vicinity of the glass tube heater, while installing a reflecting plate that has been subjected to a surface treatment to increase the reflectance to the heating chamber side,
The heating cooker according to any one of claims 1 to 5, wherein a heater cover having infrared transparency is provided on an opening surface of the reflecting plate. The heating cooker according to claim 6, wherein the heater cover is formed such that a cover surface of the heater cover and an inner surface of the heating chamber are formed on substantially the same plane. In the vicinity of the glass tube heater, while installing a reflecting plate that has been subjected to a surface treatment to increase the reflectance to the heating chamber side,
At least a part of the opening surface of the reflecting plate,
The heating cooker according to any one of claims 1 to 7, further comprising an upstanding piece for holding a falling object from the glass tube heater. The cooking device according to any one of claims 6 to 8, wherein the reflection plate includes a heater support portion that supports the glass tube heater. At least the glass tube heater, the reflector, and the heater support are configured as an integral heater unit,
The cooking device according to claim 9, wherein the heater unit is configured to be detachable from the heating chamber. The glass tube heater is
The cooking device according to any one of claims 1 to 10, wherein the cooking device comprises a double tube comprising an inner tube that seals the heating element and an outer tube for protecting the inner tube. The glass tube heater is
It consists of a double pipe consisting of an inner pipe that seals the heating element and an outer pipe that protects the inner pipe.
The cooking device according to any one of claims 6 to 10, wherein the reflector is disposed between the inner tube and the outer tube. An upper surface heater different from the glass tube heater is installed on the top surface of the heating chamber,
The cooking device according to any one of claims 1 to 12, wherein a lower surface heater different from the glass tube heater is installed below the placing means and above the tray. The upper surface heater and the lower surface heater are composed of sheathed heaters,
The shape of the sheathed heater is
The heating cooker according to claim 13, wherein the heating means is formed so as to relatively increase a calorific value at a central portion when the placing means is viewed from the front. The upper surface heater and the lower surface heater are composed of sheathed heaters,
The shape of the sheathed heater is
The heating cooker according to claim 13, wherein the heating means is formed so as to relatively increase the amount of heat generated in the front part and the rear part when the placing means is viewed from above. The heat receiving device according to any one of claims 1 to 15, wherein the tray is made of a highly reflective material, and a convex portion is provided at the center to enhance heat ray reflection efficiency toward the center of the placing means. The cooking device according to crab. The inclined part is provided in the part which installs the said to-be-heated material by providing the leg part from which both heights differ in the both ends of the said mounting means, The Claim 1 thru | or 16 characterized by the above-mentioned. Cooking device. The cooking device according to any one of claims 1 to 17, wherein the placing means has a shape in which a height of a central portion is higher than a height of both end portions. A drawer door for pulling out the placing means from the heating chamber;
The cooking part according to any one of claims 1 to 18, wherein a part of the drawer door is made of glass whose inside can be visually recognized, and the glass is subjected to heat ray reflection treatment. vessel. A guide rail that supports the drawer door and regulates the direction of drawer operation;
The guide rail is
The cooking device according to claim 19, wherein the cooking device is installed at a position deviated from directly below a glass tube heater provided on a side surface of the heating chamber.

Images