JPH0247660B2 - OOBUNTOOSUTAA - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a toaster oven.

[Prior art]

In conventional toaster ovens, a timer device was used to control the amount of time the heater was energized, but in this type of oven, there is a There is a disadvantage that the initial temperature inside the oven is different, so even if the heater is energized for the same time, the bread will bake differently.This has conventionally been dealt with by various correction measures, etc. However, not only was the structure and operation complicated, but there was still a problem in continuously obtaining the same baked results.

〔the purpose〕

The present invention was developed based on the fact that the baking of bread is related to the internal temperature at the time of completion of cooking and the initial temperature inside the refrigerator, and the finished temperature of the bread is set based on the initial temperature inside the refrigerator. , by determining that cooking is complete when the internal temperature reaches the above-mentioned finishing temperature, 1.
To provide a toaster oven in which there is no difference in finished baking between the second and subsequent roasting operations.

〔Example〕

1 is a toaster oven main body having supporting legs 2, 2 at the lower part, and a grill 5 for placing bread 4 in the chamber 3 is installed, and on top of the grill 5,
An upper heater 6 and a lower heater 7 are provided below.

Reference numeral 8 denotes an opening/closing door for opening and closing the front opening of the toaster oven main body 1, and a handle 9 is attached to the upper part of the front surface.

Reference numeral 10 denotes an operation section provided on the front side of the toaster oven main body 1, and a power indicator 11, a top brown indicator 12, a concentration adjustment volume 13, a start button 14, and a mode switching knob 15 are attached to the operation section 10. It is being

16 is a power on switch that is closed by pressing the start button 14 and is connected in series to the parallel circuit of the upper heater 6 and lower heater 7, and opens the opening/closing door 8. Alternatively, the solenoid 17 is opened when the solenoid 17 is energized. The solenoid 17 is connected to the electronic control circuit 1
Electricity is supplied by a relay switch 19 which is closed when a stop command is received from 8.

Reference numeral 20 is a relay switch for the top/brown mode inserted in the parallel circuit between the upper heater 6 and the lower heater 7, and is opened when the mode switch knob 15 is switched to the top/brown mode. When the relay switch 20 is opened, only the upper heater 6 is heated, and in principle, the upper heater 6 is heated until the user opens the opening/closing door 8.
As a safety circuit, the electronic control circuit 18 automatically cuts off the power supply to the upper heater 6 after a predetermined period of time has elapsed.

When the mode switching knob 15 is operated to the opposite side, the mode is set to AUTO, SET, and OFF, and the upper heater 6 and the lower heater 7 are energized, and the internal temperature detection means 21 such as a thermistor detects the temperature inside the refrigerator. The temperature is detected, and when the internal temperature reaches a predetermined temperature, power to the upper heater 6 and lower heater 7 is cut off.

The internal temperature detection means 21 is covered with a cylinder so as not to be directly affected by the heat from the heater 7.

Reference numeral 22 denotes a cooking completion temperature setting means for setting a temperature at which the cooking is considered to be completed (the desired baked state has been reached) based on the initial temperature inside the refrigerator.

Generally, when baking bread, the rise curve of the internal temperature is different between the first and second times, and the cooking completion temperature for achieving the same burnt state is also different. This is because the initial temperature inside the refrigerator is different.The present invention focuses on this point, and as a result of experiments, the initial temperature inside the refrigerator
T _OV (range 0℃~120℃) and cooking completion temperature Tend
It was found that the following relational expression holds between

Tend=αT _OV + (β±γ) In the above equation, α and β are constants and γ is a variable.
By changing this γ, the density of the baked bread can be changed.

For example, when α = 0.5, β = 90, and γ = 0, it will be the standard baked density. If you want to bake darker than this, change γ in ten directions, and if you want to make it lighter, change γ in one direction. , may be shifted by the density adjustment volume 13.

The cooking completion temperature Tend is set by the cooking completion temperature setting means 22 based on the above relational expression.

23 is a determining means for determining whether or not the internal temperature has reached the cooking completion temperature, and when the internal temperature reaches the cooking completion temperature, the heater control means 24 (relay switch 19 and solenoid 17) is activated.
etc.) is activated, and power supply to the upper heater 6 and lower heater 7 is cut off.

Figure 5 is a flowchart when the power, on, switch 16 is selected.
When it is turned on (step) and the upper heater 6 and lower heater 7 are energized (step), the initial temperature _TOV inside the oven is measured by the temperature detection means 21 (step).

Then, in step, the thermistor disconnection detection means detects whether or not the thermistor (temperature detection means 21) is disconnected, and if YES, the solenoid 17 is turned on, and the power is turned on and the switch 16 is turned on.
OFF, and if NO, move to step.

In this step, it is determined whether the thermistor is short-circuited or the temperature inside the refrigerator is abnormally high.If YES, the process moves to step
If so, move on to step.

In this step, the cooking completion temperature Tend is set by the cooking completion temperature setting means 22 based on the above relational expression.

Also, in the step, the temperature inside the refrigerator is read and the cooking time is started to be counted.In the step, the determination means 23 determines whether the temperature inside the refrigerator has reached the predetermined cooking completion temperature Tend.
If so, move to step; if NO, move to step.

In this step, it is determined whether the time limit has been reached, and if YES, the process moves to the step.
If NO, return to step again and repeat the above operation.

〔effect〕

As described above, the present invention provides a heating heater for roasting bread, an internal temperature detection means for detecting the temperature inside the oven, and a cooking completion temperature that sets a finished temperature based on the initial internal temperature of the oven. a temperature setting means; a determining means for determining whether or not the internal temperature has reached the cooking completion temperature; and when the determining means detects that the internal temperature has reached the cooking completion temperature, the heating heater is The bread finishing temperature is automatically set based on the initial temperature inside the oven, and cooking is completed when the oven interior temperature reaches the finishing temperature. Therefore, even when bread is baked continuously, the bread is always baked in a constant state, which is a remarkable effect.

[Brief explanation of drawings]

FIG. 1 is a front view of the toaster oven of the present invention;
FIG. 2 is a front sectional view of the same as above, FIG. 3 is a side sectional view of same as above, FIG. 4 is an electric circuit diagram of same as above, and FIG. 6, 7: Heater, 21: Internal temperature detection means,
22: Cooking completion temperature setting means, 23: Judgment means,
24: Heater control means.

Claims (1)

[Claims] 1. A heater for roasting bread, an internal temperature detection means for detecting the temperature inside the oven,
a cooking completion temperature setting means for setting a finishing temperature based on the initial temperature of the refrigerator; a determination means for determining whether or not the interior temperature has reached the cooking completion temperature; A toaster oven characterized by comprising: heater control means for controlling energization of the heating heater when it is detected that the temperature has reached the cooking completion temperature.