JP3245526B2 - Cooking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating chamber for accommodating an object to be heated, a door for opening and closing a front opening of the heating chamber, a lamp heater provided outside the top plate of the heating chamber, and a lamp heater. The present invention relates to a heating cooker provided with a heater assembly that houses a lamp heater and that includes a reflector that reflects heat from the lamp heater into the heating chamber.

[0002]

2. Description of the Related Art In a conventional heating cooker, for example, an electric heating oven, a mica heater is disposed in close contact with the outside of a top plate of a heating chamber in order to promote cleanliness and a clean feeling in the heating chamber. The temperature of the top plate of the heating chamber is approximately 500 to
The object to be heated in the heating chamber was heated and cooked at 600 ° C.

[0003] Therefore, the temperature distribution of the top plate in the heating chamber greatly contributes to the uneven heating performance in the heating chamber.
In a large oven having a heating chamber area of about 300 mm square or more and a heating chamber height exceeding 200 mm, in order to uniformly raise the top plate of the heating chamber to the above temperature, the shape of the mica heater and The area was inevitably large and the power consumption was high.

[0004] However, the power consumption of a general household electric heating oven needs to be suppressed to about 1400 W at the maximum, and it is necessary to bring the mica heater into close contact with the top plate in order to sufficiently bring out the mica heater performance.

Therefore, as disclosed in Japanese Patent Application Laid-Open No. 63-127029, a mica heater is divided into a plurality of sheets at a central portion and a periphery thereof, and each of the mica heaters is brought into close contact with the outside of the top plate of the heating chamber. The heating is controlled by switching the energization of the plurality of mica heaters to draw out the performance of the mica heater, and the object to be heated is cooked.

[0006] In this heating cooking, radiant heat from the top plate heated by the mica heater to the heating chamber is a main element, and radiant heat has a main component in a substantially vertical direction of the top plate. Heating the whole uniformly is an important factor for improving the uneven heating.

On the other hand, glass is attached to the door closing the front opening of the heating chamber so that the user can visually check the heating state of the object to be heated. The amount of heat dissipated to the outside of the heating chamber is larger than that of the metal wall surface, and the temperature distribution in the heating chamber has a lower temperature on the door side of the heating chamber, which is a cause of uneven heating.

Therefore, in order to improve the uneven heating, the intermittent control is performed by switching between energizing the mica heater in the center and energizing the mica heater in the periphery (peripheral portion), as disclosed in Japanese Patent Application Laid-Open No. 63-127029. In order to prevent uneven heating.

[0009]

Therefore, in the case of the above, when one of the mica heaters is inevitably energized, for example, the energization of the mica heater of the other (outer peripheral portion) is cut off. Therefore, it takes time to raise the temperature in the heating chamber, and the cooking time is long.

Further, the conventional mica heater heats the top plate and heats the inside of the heating chamber by heat conduction.
Since the adhesion between the mica heater and the top plate has a considerable effect on the heating performance, especially the rise time, as long as the shape of the mica heater is flat, the shape of the top plate must necessarily be flat. In order to improve the unevenness, the shape of the top plate cannot be made uneven to make the radiation state of the radiant heat from the top plate good, and when the shape of the top plate is made uneven, There is a problem that a mica heater conforming to the shape is required, the structure becomes complicated, and the cost for obtaining such a mica heater becomes extremely high.

A heating cooker according to the present invention has been made in view of the above-mentioned problems, and is provided outside a top plate of a heating chamber, houses a lamp heater and the lamp heater, and transfers heat from the lamp heater to the heating chamber. A heater assembly comprising a reflecting plate for reflecting light toward the door, and arranging the heater assembly such that the center of the heater assembly is located closer to the door than the center of the heating chamber. It is an object of the present invention to make it possible to uniformly heat the material.

[0012]

According to a first aspect of the present invention, there is provided a heating cooker for opening and closing a heating chamber for accommodating an object to be heated and a front opening of the heating chamber. Heating cooking provided with a door and a heater assembly including a lamp heater and a reflector plate that houses the lamp heater and reflects heat from the lamp heater into the heating chamber, the heater assembly being provided outside the top plate of the heating chamber. In the heater, the heater assembly is disposed such that the center of the heater assembly is located closer to the door than the center of the heating chamber, and the heater assembly transfers heat from the lamp heater to the object to be heated. A radiating portion for radiating is provided, and the radiating portion is swelled toward the heating chamber, and the swelling amount is gradually reduced from the door side toward the back of the heating chamber. In the heating cooker having the above configuration, since the center of the heater assembly is disposed closer to the door side than the center of the heating chamber, the amount of radiant heat from the lamp heater to the door side increases, and the amount of heat passing through the door increases. Temperature drop due to heat dissipation outside the heating chamber,
In addition to uniformly heating the heating chamber to suppress heating unevenness, the heater assembly is provided with a radiating section for radiating heat from the lamp heater to the object to be heated, and the radiating section is expanded toward the heating chamber. Since the swelling amount is formed so that the door side is gradually increased toward the back side of the heating chamber, the vertical component of the radiant heat radiated to the back side of the heating chamber is increased, so that the entire heating chamber can be further increased. Uniform heating can be performed.

[0013]

[0014]

According to a second aspect of the present invention, there is provided a heating cooker provided with a heating chamber for accommodating an object to be heated, a door for opening and closing a front opening of the heating chamber, and a lamp heater disposed outside a top plate of the heating chamber. And a heater assembly that houses the lamp heater and that includes a reflector plate that reflects heat from the lamp heater into the heating chamber, wherein the heater assembly heats the center of the heater assembly. the center of the chamber and disposed to be positioned on the door side, the lamp heater is formed in an annular shape, provided with a radiation part for radiating heat from the lamp heater to the heater assembly body to the object to be heated, the A heat-resistant black paint is applied to a part of the radiation part other than the substantially central part facing the lamp heater. In the heating cooker having the above configuration, since the center of the heater assembly is disposed closer to the door side than the center of the heating chamber, the amount of radiant heat from the lamp heater to the door side increases, and the amount of heat passing through the door increases. In addition to suppressing the temperature drop due to heat dissipation outside the heating chamber and uniformly heating the heating chamber to suppress uneven heating, the heat radiated from the annular lamp heater is almost at the center of the radiating part coated with heat-resistant black paint. Since the part other than the part absorbs more than the central part, the amount of heat radiated from the part other than the substantially central part of the radiating part to the heating chamber becomes larger than that of the central part, thereby uniformly heating the heating chamber.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a cooking device according to the present invention will be described with reference to FIGS.

In the first embodiment, a heating chamber 1 for accommodating an object to be heated is provided in a cooking device main body, a door 2 for opening and closing a front opening of the heating chamber 1 is provided, and a top plate of the heating chamber 1 is provided. 3 a lamp heater 4 and a reflecting plate 5 which houses the lamp heater 4 and reflects heat from the lamp heater 4 into the heating chamber 1
And a heat insulating material 7 is provided at a portion of the top plate 3 where the heater assembly 6 is not provided to suppress the dissipation of heat from the top plate 3. At the bottom of the heating chamber 1, there is provided a tray 8 on which an object to be heated is placed.

A radiating plate 9 is provided on the heater assembly 6 as a radiating portion having a heat-resistant black paint applied to both surfaces for radiating radiant heat from the lamp heater 4 into the heating chamber 1.
And the heater assembly 6 is provided with the heater assembly 6
(The center of the lamp heater 4) is located closer to the door 2 than the center of the heating chamber 1.

In the heating cooker having the above-described configuration, the center of the heater assembly 6 is disposed so as to be closer to the door 2 than the center of the heating chamber 1, so that the radiant heat from the lamp heater 4 to the door 2 can be reduced. The amount of heat is increased, the temperature drop due to heat dissipation outside the heating chamber 1 through the door 2 can be suppressed, and the inside of the heating chamber 1 can be uniformly heated, and uneven heating of the object to be heated can be suppressed and excellent heating can be performed. The finished state of the product can be obtained.

Next, a second embodiment of the cooking device of the present invention will be described with reference to FIG.

The heating cooker according to the second embodiment has basically the same configuration as that of the above-described first embodiment, and the heat from the lamp heater 4 is applied to the heater assembly 6. A radiating section 10 for radiating the heating object is provided, and the radiating section 10 swells such that the amount of swelling toward the inside of the heating chamber 1 increases toward the door 2 side and decreases gradually toward the back side of the heating chamber 1. Has formed. In the heating cooker having the above configuration, the vertical component (arrow A in FIG. 3) of the radiant heat radiated to the back side of the heating chamber 1 increases,
The temperature on the back side of the heating chamber 1 can also be raised in the same manner as the door 2 side, so that the entire heating chamber 1 can be more uniformly heated, and the uneven heating of the heated object can be suppressed. The finished state can be obtained.

Further, the radiation plate 10 may have a shape simply expanded as shown in FIGS.

A third embodiment of the cooking device according to the present invention will be described with reference to FIG.

The heating cooker according to the third embodiment has basically the same configuration as that of the first embodiment. The lamp heater 4 of the heater assembly 6 is formed in an annular shape, The plate 5 is provided with a center reflecting portion 5a for reflecting heat radiated toward the center of the lamp heater 4 to the outside. The center reflector 5a is provided by forming the reflector 5 in a convex shape toward the center of the lamp heater 4.

In the heating cooker having the above-described structure, the heat radiated from the annular lamp heater 4 toward the central portion is transmitted to the central reflecting portion 5.
a, the radiant heat is prevented from concentrating at the central portion, and the radiant heat is uniformly radiated to the whole. Thus, the inside of the heating chamber 1 is uniformly heated to suppress the uneven heating of the object to be heated and to provide a good radiant heat. The finished state of the heated object can be obtained.

In the third embodiment,
Although the central reflecting portion 5a is formed integrally with the reflecting plate 5, it may be formed by fixing a separate central reflecting member 11 to the center of the reflecting plate 5 as shown in FIG. At this time, the lowermost end of the center reflector 11 is formed so as to be substantially at the same position as the lower end of the lamp heater 4.

As described above, even when the central reflector 11 is fixed, the same effect as described above can be obtained, and uneven heating can be prevented.

A fourth embodiment of the heating cooker according to the present invention will be described with reference to FIGS.

The heating cooker of the third embodiment has basically the same configuration as that of the first embodiment. The lamp heater 4 is formed in an annular shape, and the heater assembly 6 is A radiating portion 12 for radiating heat from the lamp heater 4 to the object to be heated is formed by expanding into the heating chamber 1, and a masking 12 a is formed in a substantially central portion of the radiating portion 12 facing the lamp heater 4. And a heat-resistant black paint 13 is applied to portions other than the substantially central portion where the masking 12a is applied.

In the heating cooker having the above-mentioned structure, the heat radiation radiated from the annular lamp heater 4 is absorbed more by the heat-resistant black coating 13 than the substantially central masking 12a. The amount of heat radiated from the portion where the heat-resistant black paint 13 other than 12a is applied into the heating chamber 1 increases, and the heating chamber 1 is uniformly heated to suppress uneven heating of the heated object, thereby achieving a good finish of the heated object. You can get the status.

[0031]

According to the first aspect of the present invention, there is provided a heating cooker comprising:
The center of the heater assembly is located closer to the door than the center of the heating chamber
Since it is installed, radiation from the lamp heater to the door side
Increases the amount of heat and dissipates heat outside the heating chamber through the door
To prevent the temperature from dropping due to
In addition to suppressing the
A radiating portion for radiating the heat of the object to the object to be heated;
Bulges into the heating chamber, and increases the bulge amount to the door side.
It is formed gradually smaller toward the back side of the heating chamber
Therefore, the vertical component of the radiant heat radiated to the back of the heating chamber is increased.
By doing so, more uniform heating of the entire heating chamber
Can be.

[0032]

[0033]

[0034] The heating cooker according to claim 2 is a heater assembly.
Is located closer to the door than the center of the heating chamber
The amount of radiant heat from the lamp heater to the door side
Temperature due to heat dissipation outside the heating chamber through the door
Suppress the drop and heat the heating chamber uniformly to suppress uneven heating
Of course, heat radiated from the annular lamp heater is heat resistant
The central part of the radiant part except for the central part is black
Part of the radiating part other than the substantially central part because it absorbs more than
The amount of heat radiated to the heating chamber from the
As a result, the heating chamber can be heated uniformly.

[Brief description of the drawings]

FIG. 1 is a vertical front sectional view showing a first embodiment of a heating cooker according to the present invention.

FIG. 2 is a horizontal sectional view showing the first embodiment of the cooking device of the present invention.

FIG. 3 is a vertical side sectional view showing a second embodiment of the heating cooker according to the present invention.

FIG. 4 is a vertical front sectional view showing another example of the heating cooker according to the second embodiment of the present invention.

FIG. 5 is a horizontal sectional view showing another example of the heating cooker according to the second embodiment of the present invention.

FIG. 6 is a vertical front sectional view showing a third embodiment of the heating cooker according to the present invention.

FIG. 7 is an enlarged vertical front sectional view showing a main part of another example of the third embodiment of the heating cooker according to the present invention.

FIG. 8 is a vertical front sectional view showing a fourth embodiment of the heating cooker according to the present invention.

FIG. 9 is a horizontal sectional view showing a fourth embodiment of the cooking device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heating room 2 Door 3 Top plate 4 Lamp heater 5 Reflector plate 6 Heater assembly 9 Radiation part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24C 7/02 531 F24C 7/02 350 F24C 7/06 F24C 15/24 H05B 3/00 345

Claims (2)

(57) [Claims] 1. A heating chamber for accommodating an object to be heated, a door for opening and closing a front opening of the heating chamber, and a lamp heater and a lamp heater which are disposed outside a top plate of the heating chamber and house the lamp heater. A heating assembly comprising a reflector assembly that reflects heat from the lamp heater into the heating chamber,
The heater assembly is centered on the heater assembly .
Arranged so as to be located closer to the door side than the center, a radiating portion for radiating heat from the lamp heater to the object to be heated is provided in the heater assembly, and the radiating portion is expanded toward the heating chamber side. A heating cooker characterized in that the amount of swelling is gradually reduced toward the back side of the heating chamber with the door side increasing toward the back. 2. A heating chamber for accommodating an object to be heated, a door for opening / closing a front opening of the heating chamber, and a lamp heater and a lamp heater disposed outside the top plate of the heating chamber for accommodating the lamp heater. A heating assembly comprising a reflector assembly that reflects heat from the lamp heater into the heating chamber,
The heater assembly is centered on the heater assembly .
By positioning on the door side of the center disposed, the Ranpuhi
The chromatography data was formed annularly, heat the heat provided radiation portion for radiating to the object to be heated, the portion other than the substantially central portion opposite to the lamp heater of the radiant section from the lamp heater to the heater Assembly A cooking device characterized by a black coating.