JPS6258942A - Oven for baking confectionery and breads - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (b) Industrial application field The present invention relates to an oven for baking confectionery and bread.

(b) Prior art Conventionally, electric resistance heating elements or gas barbs have been used as heat sources for ovens for baking confectionery and bread.
The object to be baked is heated by increasing the atmospheric humidity in the oven through convection, etc., and by emitting near-infrared rays q1 emitted from the heating element in the case of an electric resistance heating element, and by emitting q4 radiation in the ultraviolet region emitted from the flame in the case of a gas burner. Heating is occurring.

(c) Problems that the invention seeks to solveHowever,
In both the heating methods of electric resistance heating elements and gas burners, the surface of the object to be fired is first heated, and the interior of the object to be fired is heated by thermal conduction.

On the other hand, the dough for sweets and breads to be baked is mainly
These materials are made from starch, sugar, and water, and have low thermal conductivity.Furthermore, because they are formed into a sponge shape, the thermal conductivity of the dough is extremely low.

For this reason, a large temperature gradient occurs between the surface and the inside of the object to be fired, resulting in the surface being overfired and the inside being unfired. If the temperature is large, the above-mentioned drawbacks become more noticeable.In order to prevent this drawback, stirring of the sponge cake dough during baking, called bubble removal, is performed about 4 times in the early stage of baking to reduce the temperature of the dough. Firing was carried out while aiming for uniformity, and the judgment and technique of when to remove the bubbles required special skill, and the failure rate was extremely high.

If an attempt is made to avoid the above drawbacks by lowering the baking temperature and baking slowly, the dough will become too dry and the moist flavor of the castella cake will be lost.

(d) Means for solving the problem The present invention provides a confectionery in which a far-infrared radiation plate is disposed above the interior of the oven, and a heat source separate from the radiator is disposed below the copper plate.・The aim is to provide ovens for baking bread.

(E) Function In this invention, far infrared rays emitted from the far infrared radiation plate above the inside of the oven heated by the heat source penetrate into the inside of the dough and directly heat the inside of the dough. will be heated approximately evenly on both the surface and inside.
This eliminates the above-mentioned conventional drawbacks.

The far infrared rays used here have a wavelength of 7 to 10μ, and the far infrared rays in this band excites the rotational vibrations of the dough raw material molecules, causing the dough itself to generate less heat, and the longer the wavelength, the more , there is less attenuation midway through the process, and the distance it reaches inside the fabric is longer.

The wavelength and intensity can then be adjusted by controlling the radiant surface temperature of the radiating plate.

(To) Effect: rbl yo □ yo, yo. . Yes, □5. □１ □Since the inside is heated approximately evenly, □□ In the case of baking castella cakes as shown above, removing bubbles 1
Even if you do not perform the firing process at all, you can perform the conventional bubble removal process □
The result is a fired product that is as good as, if not better than, that produced by
Ru. In addition, in the case of castella, the baking time is conventionally about 60
What used to take several minutes to prepare now only takes about 42 minutes, which improves the shelf life of the product and the flavor of the product.

Therefore, even an unskilled person can easily bake castella cakes, and in particular, there will be no baking failures. The above effect is obtained when baking castella, which is said to require the most advanced baking technology, and the same effect can be obtained when baking baked goods such as kutsky and cakes. is clear.

(G) Effects of the Invention To explain the embodiment of the present invention in detail with reference to the drawings, (Δ) shows an oven for baking confectionery and bread, and in the center there is a furnace (1) having approximately the same configuration. ) are provided in two stages, upper and lower, various auxiliary machines are arranged below, and display/control parts (2) are arranged on the left and right sides, respectively, to form the oven (A).

The furnace (1) includes an outer wall (3) of the furnace body, which has a generally rectangular parallelepiped space for accommodating the object to be fired, and an outer wall (3) of the furnace body (3).
3) It consists of a door body (4) that can be opened and closed at the front to close the opening for taking in and taking out the fired materials, and the outer wall (3) and body (4) are made of a heat insulating material.The inner and outer peripheral surfaces are made of metal plates. The door body (4) is equipped with a heat-resistant glass window (5) for observing the inside of the furnace.
The upper part rotates back and forth around a pivot (6)' suspended horizontally at the lower part of the body to open and close the opening.
) indicates the door n opening handle, (8) : indicates the front decorative panel.

In the lower part of the interior of the furnace (1), a material to be fired (1o) is placed at a predetermined distance from the inner bottom surface (9) of the furnace (1).
A thick iron plate (11) on which the □ is placed is laid horizontally, and the iron plate (11) slides on the top surface of the iron plate support frame (12) provided on the bottom side of the iron plate (11). hand,
- The object to be fired on the iron plate (11) can be taken in and out of the iron plate through the opening. Also, the inner bottom of the furnace :(
9) and the iron plate (11), there is a nichrome wire, etc. 1
A lower heat source (13) consisting of an electric resistance heating element is arranged.
□It is set up. In the figure, (14) is an insulating support frame, (1'5
) indicates a spacer for maintaining a gap from the inner bottom surface. 1
A far-infrared radiating plate (1'6) is installed horizontally in the upper part of the interior of the furnace (1). Far-infrared radiation is obtained by coating particles of far-infrared emitting materials such as metal oxides such as boron oxide, aluminum oxide, sodium oxide, and titanium oxide, and rare earth oxides using a melting method using sodium silicate as a binder. The radiation surface (18) is heated by near-infrared rays from a heat source irradiated onto the radiation surface and heating by convection, and far-infrared rays are emitted from the radiation surface (18).

In particular, since the metal substrate (17) of the far-infrared radiating material (16) is made of aluminum alloy with high thermal conductivity, the temperature distribution of the radiation plate (16) is uniform and evenly distributed over the interior of the furnace (1). It emits far infrared rays of a certain wavelength and intensity. In addition, methods such as boring can also be used to coat the far-infrared emitting material, in short, coating the surface of the metal substrate with
The material may be attached in a state that can withstand high temperatures and allows good heat transfer from the substrate to the material. However, in order to promote scattering of the emitted far infrared rays and to equalize the intensity of far infrared rays inside the furnace, it is desirable that the radiation surface be a rough surface.From this point of view, in this example, the radiation surface is a rough surface. We use the method 1 (which produces a molten finish).

Further, below the far-infrared radiation plate (16), a heat source (19) made of an electric resistance heating element is arranged at a predetermined interval, and below the heat source (19), a protective wire mesh (20 ) is installed.

The present invention is configured as described above, and when used, the heat source (19) will be explained by taking the castella baking as an example.
The inside of the furnace (1) is preheated with the lower heat source (13), the wooden frame (21> is placed on the iron plate (11), the castella dough (22) is poured into the inside, and the far-infrared radiation plate ( The far infrared rays from 16) are emitted toward the same fabric,
) Baking is performed while increasing the temperature of each part of the dough (22) uniformly by promoting heat generation from inside.

Therefore, it is possible to perform castella baking without performing the bubble cutting operation of the conventional technique.

The heating from the heat source (19) and the lower heat source (13) gives the upper and lower surfaces of the castella sponge cake an appropriate brown color.

Incidentally, the firing process including this preheating, that is, the temperature inside the furnace, the ventilation inside the furnace, the temperature of the far-infrared radiation plate <16), the timing of these operations, etc., are sequence-controlled by the display/control unit <2).

In the figure, (23) indicates a temperature sensor for detecting the humidity inside the furnace.

[Brief explanation of the drawing]

FIG. 1 is a side view of the oven according to the present invention when the oven is not in use. FIG. 2 is a sectional view taken along line II in FIG. :Furnace (16):Far-infrared radiation plate (19):Heat source patent applicant Hisadensha Co., Ltd. Representative Ken Matsuo - Butcho” Masade, 7 cities, (Voluntary) November 1985/eR Patent 11 Appearance Officer Uga) Kuchibe-dono 1, 'Ili's Irumizu 1985 Patent Application No. 198328 2, Name of the invention Oven for baking sweets and breads 3, Amendment 4 Famous events 1' Relationship with 14 Applicant Name: Kuden Co., Ltd. 4゜Agent Address: 2-1F1 Imaizumi, Chuo-ku, Fukuoka City, 810
2G No.'-, :;y-t・pa. 5. Date of amendment order Showa year month day r (
+-) Corrected to “Example”.

Claims (1)

[Claims] 1) Confectionery/bread in which a far-infrared radiation plate (16) is disposed above the inside of the furnace (1) of the oven (A), and a heat source (19) is disposed below the radiation plate (16). Oven for baking.