JP3973978B2 - Method for preventing uneven baking in oven and oven - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for preventing uneven baking in an oven and an oven. More specifically, the present invention relates to a baking unevenness preventing method and an oven that can prevent baking unevenness of confectionery and bread by making the temperature in the baking chamber of the electric oven for confectionery and bread uniform.
[0002]
[Prior art]
In recent years, an increasing number of confectionery and bakery stores have a glass wall visible from the sales floor.
[0003]
In a store having such a form, as shown in FIG. 6, by using a double door type oven 104 in which an opening / closing door 103 is provided on the store side 101 and the kitchen side 102, baking is performed from the opening / closing door 103 on the kitchen side 102. After the material to be baked is put into the chamber 105 and baked, the baked material such as freshly baked confectionery and bread is taken out from the open / close door 103 on the kitchen side 102.
[0004]
Therefore, it is possible to save the trouble of putting the confectionery / bread from the kitchen into the transport case and then transporting it to the sales floor side, and to drive the purchase motivation by arranging the freshly baked confectionery / bread directly in the sales floor. Therefore, the double door type oven has been attracting attention.
[0005]
Therefore, an upper-heating heating unit 107 and a lower-heating heating unit 108 in which nichrome wires are wired are arranged above and below the baking chamber 105 of the oven 104, and the upper-heating heating unit 107 and the lower-heating heating unit 108 perform the baking. The temperature in the chamber 105 is heated within a range of about 180 to 240 degrees to bake the confectionery / bread.
[0006]
Further, a temperature sensor 109 is disposed in the baking chamber 105, and the temperature is detected by the temperature sensor 109, and the computer is controlled to maintain a preset temperature.
[0007]
[Problems to be solved by the invention]
Usually, the door is opened several times during baking to see the baking of baked goods such as confectionery.
In this case, as shown in FIG. 7, the flow of outside air when the door is opened opens the door 103 so that the surrounding air moves toward the back so as to crawl the furnace floor.
[0008]
Then, since the hot air of the lower flame is pushed upward from the middle and rises toward the upper part of the furnace, there is almost no temperature drop at the upper part of the furnace in which the open / close door 103 is open. A temperature drop occurs in the back direction where the temperature is not open, and a temperature unevenness state occurs in the furnace where the temperature is not uniform.
[0009]
Therefore, when the temperature in the furnace is detected by the temperature sensor 109 in the state of temperature unevenness and the temperature control of the upper-heating heating unit 107 is performed, there is a problem that uneven baking occurs on the object to be fired.
[0010]
In addition, as shown in FIG. 8, the heater wiring 110 of the heating part for the upper fire is, for example, a plurality of installations with an output 5A as one block. When one temperature sensor is installed, all heaters are controlled by ON / OFF control. When the temperature control of the wiring is performed at the same time and two temperature sensors are installed, the temperature control of the heater wiring is divided in accordance with the number of temperature sensors and the temperature control is performed.
[0011]
However, in the case of the double door type, the heat consumption near the open / close door is large, the temperature drop is severe compared to other heater wiring, and the heater ON time to the set temperature opens compared to other heaters, which causes uneven burning. There is a problem that causes
[0012]
Therefore, the present invention was devised in view of the above points, and by increasing the heater capacity in the vicinity of the door that consumes a large amount of temperature, it is possible to make the time to the set temperature uniform, thereby preventing uneven burning. An object of the present invention is to provide a method for preventing baking unevenness in an oven and an oven.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the baking unevenness prevention method in the oven according to the present invention includes an upper heating heating unit and a lower heating heating unit arranged at the upper and lower portions of the baking chamber respectively equipped with opening / closing doors on both side ends. In the method for firing an object to be fired, a step of providing a heating part for upper fire between each opening / closing door side and the opening / closing door side, and between the opening / closing door side A step of disposing at least one temperature sensor in the heating unit for fire, a step of providing a shielding plate so that the temperature sensor is not directly exposed to outside air, and an upper fire between the doors by the temperature sensor. Along with the heating unit for heating, the upper heating unit for heating between the doors is heated and the upper heating unit for opening and closing between the opening and closing doors is opened and closed simultaneously. Provide a process of providing an electric heating output difference with the heating part for the upper side of the door
[0014]
Here, the difference in temperature drop between the heating part for the upper fire between the opening and closing doors and the heating part for the upper heating between the opening and closing doors when the opening and closing door is opened, By providing an electrical heating output difference with the upper heating part, when the upper heating part on the door side is heated together with the upper heating part between the opening and closing doors, it is fired by reaching the set temperature at the same time. By making the temperature in the room uniform, uneven baking can be prevented.
[0015]
In order to achieve the above object, an oven according to the present invention is an oven in which opening / closing doors are attached to both ends, and an upper heating heating unit and a lower heating heating unit are arranged at the upper and lower portions of the baking chamber. And means for providing the heating part for the upper fire between the opening and closing door side and the opening and closing door side, and means for providing at least one temperature sensor in the heating part for the upper fire between the opening and closing door side. And a means for providing a shielding plate so that the outside air does not directly contact the temperature sensor, and the temperature sensor allows the upper heating heating section between the opening and closing door and the upper heating heating section on the opening and closing door side to simultaneously set the temperature. The heating control means is provided with an electric heating output difference between the upper heating heating section between the opening and closing doors and the upper heating heating section on the opening and closing door side.
[0016]
Here, by providing a heating control means in which an electric power output difference is provided between the heating part for the upper fire between the opening and closing doors and the heating part for the upper heating on the opening and closing door side, between the opening and closing doors when the opening and closing doors are opened. It is possible to control the difference in temperature drop between the upper heating part and the upper heating part on the door side so that it reaches the set temperature at the same time. Can be prevented.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings to provide an understanding of the present invention.
[0018]
FIG. 1 is a side sectional view showing an example of a method for preventing uneven baking in an oven to which the present invention is applied.
Here, the oven main body 1 is composed of three firing chambers 2 arranged in a row and an opening / closing door 4 attached to both openings 3 of each firing chamber 2.
[0019]
Therefore, the lower end of the opening / closing door 4 is pivotally connected to the lower end edge of the opening 3, and the opening 3 can be opened and closed in a sealed manner by the handle 5.
Therefore, by attaching the opening / closing doors 4 to the opening portions 3 at both ends of the firing chamber 2, it is possible to input the firing object before firing and take out the firing object after firing through the separate opening / closing doors 4.
[0020]
Further, as shown in FIGS. 2 and 3, an upper heating unit 6 and a lower heating unit 7 are installed at the upper and lower portions of the baking chamber 2.
[0021]
Here, the lower heating unit is provided with an electric heater using nichrome wiring, and the temperature of the electric heater is controlled by sensing the temperature with a temperature sensor.
[0022]
Next, the upper heating unit 6 is composed of a block A on both doors and a block B positioned between the blocks A, and each block is provided with an electric heater 8 made of Nicron wiring. is there.
[0023]
Further, a temperature sensor 9 is arranged near the center of the heating part 6 for the upper fire, and the temperature sensor 9 senses the temperature in the block B and controls the temperature of the entire heating part 6 for the upper fire. .
[0024]
Therefore, a difference is provided in the output of the electric heater 8 in the block A on both the open / close door sides and the block B adjacent to the block A. For example, when the output of the heating part for upper fire is 2 Kw, when the voltage is 100 V, the output current in the heater of each block is 5A.
[0025]
However, opening the door will cause a temperature difference between block A and block B. In the case of heating control by the temperature sensor in block B, block A is turned off before reaching the temperature setting. Temperature unevenness occurs between A and the block B.
[0026]
Further, in the case of heating control by the temperature sensor in the block A, before the block A reaches the set temperature, the block B rises to the set temperature or more and temperature unevenness occurs.
[0027]
Therefore, in consideration of the temperature difference between the block A and the block B in advance, for example, when the output of the heating part for the upper fire is set to 2 Kw, the output current in the block A is 6A and the output current in the block B is 3.7A. Thus, the temperature in the block A is set to be equal at the same time as the block B reaches the set temperature.
Therefore, by performing temperature control in the entire electric heater in the block A and the block B, temperature control without causing uniform temperature unevenness is possible.
[0028]
Here, the number of the blocks B between the two doors A is not necessarily one, and each block B may be constituted by two or three electric heaters.
[0029]
In the present invention having the above-described configuration, the electric heater in the block A on the door side has a uniform temperature state by increasing the output over the electric heater in the block B in order to prevent uneven burning due to a temperature drop due to heat radiation from the door. It is set as such a structure.
[0030]
Therefore, when the temperature sensor senses the temperature drop in the firing chamber due to opening the door, and the ON temperature is controlled to the set temperature, the temperature difference between the electric heaters in the block A and the block B is calculated as the electric heat in the block A and the block B. It is possible to control the firing chamber to be in a uniform temperature state by eliminating it within the ON time due to the difference in the output of the heater.
[0031]
Next, FIG. 4 and FIG. 5 are explanatory views showing another example of the baking unevenness prevention method in the oven to which the present invention is applied.
[0032]
An upper heating unit 6 and a lower heating unit 7 are installed at the upper and lower portions of the firing chamber 2, and the lower heating unit is provided with an electric heater using nichrome wiring, The temperature of the entire electric heater is controlled by sensing the temperature.
[0033]
Therefore, the upper heating unit 6 is composed of a block A1 and a block A2 on both the open / close door sides, a block B1 adjacent to each block A1, and a block B2 adjacent to the block A2, and each block is electrically heated by Nicron wiring. The heater 8 is provided.
[0034]
Further, temperature sensors 9 are arranged near the boundary between the block A1 and the block B1 and near the boundary between the block A2 and the block B2. The temperature of each of the blocks A1 and B1 is sensed by the temperature sensor 9 to control the temperatures of the entire blocks A1 and B1, and the temperatures of the blocks A2 and B2 are sensed to control the temperatures of the blocks A2 and B2. It is set as the structure which performs.
[0035]
Accordingly, the temperature control of the electric heater 8 in the block A1 and the block B1 and the temperature control of the electric heater 8 in the block A2 and the block B2 are individually performed by the respective temperature sensors 9.
Further, by surrounding each temperature sensor 9 with a shielding plate 10 so that the outside air does not directly contact, the outside air flows in when the open / close door is opened, and a temperature drop due to the direct contact is prevented. Is possible.
[0036]
Therefore, as described above in the example of the baking unevenness prevention method in the oven to which the present invention is applied, a difference is provided between the outputs of the electric heaters 8 in the block A1 and the block B1 on both the door sides and the block A2 and the block B2. To do.
[0037]
Here, in consideration of the temperature difference between the block A1 and the block B1 and the block A2 and the block B2, for example, when the output of the heating part for the upper fire is set to 2 Kw, the output current in the block A1 and the block A2 is set to 6A. By setting the output current in B1 and block B2 to 3.7 A, the temperature in block A1 or block A2 is set to be equal at the same time that block B1 or block B2 reaches the set temperature by temperature sensing by each temperature sensor 9 To do.
Therefore, by performing temperature control in the entire electric heater in the block A and the block B, temperature control without causing uniform temperature unevenness is possible.
[0038]
In the present invention configured as described above, the electric heaters in the block A1 and the block A2 on the open / close door side have higher output than the electric heaters in the block B1 and the block B2 in order to prevent uneven burning due to a temperature drop due to heat radiation from the open / close door. Thus, the temperature is uniform.
[0039]
Accordingly, when the temperature sensor in the block A1 and the block B1 and the temperature sensor in the block A2 and the block B2 sense the temperature drop in the baking chamber due to opening the door, and the ON temperature is controlled to the set temperature, the electric heat in the block A1 and the block B1 The temperature difference of the heater and the temperature difference of the electric heater in block A2 and block B2 are eliminated within the ON time by the output difference of the electric heater in block A1 and block B1 and block A2 and block B2, thereby equalizing the inside of the firing chamber It is possible to control the temperature so as to be in a proper temperature state.
[0040]
Further, in the present invention, temperature unevenness is suppressed by changing the heater output for each block, but if the output value is fixed, temperature unevenness is caused by wear of the opening / closing door packing caused by long-term use. It can happen.
However, the oven has a function to arbitrarily adjust the output in units of 1% from the control panel in units of blocks of the heating part for the upper fire.
Therefore, temperature irregularity can be eliminated by changing the percentage of the output value from the control panel.
[0041]
For example, the initial value of the output of the block A facing the door and the block B adjacent to the block B is 100%, but the temperature in the block A is deteriorated due to deterioration of the door packing due to long-term use. When the drop becomes large, the output percentage of the block B is lowered according to the temperature drop, so that the temperature unevenness of the block A and the block B can be eliminated.
[0042]
【The invention's effect】
As described above, according to the present invention, the temperature difference between the electric heater on the door side and the electric heater adjacent thereto due to the temperature drop in the firing chamber caused by the opening and closing of the door, and the output difference to the electric heater. By controlling so that it may become a uniform temperature state by providing, baking of the confectionery and bread which does not produce baking unevenness is attained.
[Brief description of the drawings]
FIG. 1 is an explanatory side cross-sectional view showing an internal mechanism of an oven as an example of a method for preventing uneven baking in an oven to which the present invention is applied.
FIG. 2 is an explanatory diagram of the internal cross section of the baking chamber of the oven shown as an example of a method for preventing baking unevenness in the oven to which the present invention is applied.
FIG. 3 is an explanatory diagram of the wiring of the electric heater of the heating portion for heating the oven shown as an example of a method for preventing uneven baking in the oven to which the present invention is applied.
FIG. 4 is an explanatory diagram of an internal cross section of a baking chamber of an oven shown as another example of a method for preventing uneven baking in an oven to which the present invention is applied.
FIG. 5 is an explanatory diagram of wiring of the electric heater of the heating portion for heating the oven shown in another example of the baking unevenness prevention method in the oven to which the present invention is applied.
FIG. 6 is an explanatory view showing an example of a double-sided door type oven.
7 is an explanatory view showing an internal structure of a baking chamber of the oven in FIG. 6. FIG.
8 is a wiring explanatory diagram of an electric heater of the heating part for the upper fire in the baking chamber in FIG. 7. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Oven body 2 Baking chamber 3 Opening part 4 Opening / closing door 5 Handle part 6 Heating part for upper fire 7 Heating part for lower fire 8 Electric heater 9 Temperature sensor 10 Shielding plate

Claims (2)

In the method of firing the object to be fired by the heating part for the upper fire and the heating part for the lower fire arranged in the upper and lower parts of the firing chamber, each equipped with an open / close door on each side end,
Providing a heating part for the top fire between each opening / closing door side and the opening / closing door side ;
Disposing at least one temperature sensor in the heating part for the top fire between the open / close door side;
A step of providing a shielding plate so that the outside air does not directly hit the temperature sensor;
The heating sensor for the upper fire between the opening and closing doors is heated by the temperature sensor and the heating part for the upper heating between the opening and closing doors, and simultaneously reaches the set temperature of the heating part for the upper heating between the opening and closing doors. A method of preventing baking unevenness in an oven, comprising a step of providing an electric power output difference between a heating part for the upper fire between the open / close door sides and a heating part for the upper fire between the open / close doors. Opening and closing doors are attached to both ends, respectively, and in the oven in which the heating part for the upper fire and the heating part for the lower fire are arranged in the upper and lower parts of the baking chamber,
Means for providing a heating part for the top fire between the door side and the door side;
Means for providing at least one temperature sensor in the heating part for the top fire between the door side;
Means for providing a shielding plate so that the outside air does not directly hit the temperature sensor;
The upper heating part between the doors and the upper door heating part between the opening and closing doors so that the upper heating part and the upper heating part between the opening and closing doors simultaneously reach the set temperature by the temperature sensor. An oven comprising: a heating control unit provided with an electric heat output difference with the heating unit.

Images