JPH0113923Y2 - - Google Patents

Description

[Detailed description of the invention] Technical field This invention relates to a heating cooker that heats and cooks food stored in an oven. The present invention relates to a heating cooker equipped with a temperature display section that displays the temperature and the current temperature inside the oven in a simulated analog manner.

Prior Art Generally, when cooking kutsky, butter rolls, etc. in an oven, it is necessary to preheat the inside of the oven. Conventionally, when preheating is performed in a heating cooker equipped with a temperature display section in which display segments are arranged in a bar shape every 10 degrees Celsius, when the preheating key is operated, the characters "preheating" 43 is lit. Next, when the preheating temperature is set to, for example, 200° C. by the input means, the segment 45 corresponding to that temperature is lit. Next, when the cooking start switch is operated to start preheating, the heater is activated and preheating is started, and as shown in FIG.
is flashing. Then, when the temperature inside the refrigerator rises based on the operation of the heater, each segment 45 is sequentially lit from the low temperature side as the temperature rises, and as shown in FIG.
As shown in FIG. 2, when the temperature inside the oven rises to 180° C., the segment 45 corresponding to that temperature and the segments 45 corresponding to temperatures below that temperature are lit. Subsequently, when the temperature inside the oven rises to 190°C, the segment 45 corresponding to that temperature is lit as shown in d of the same figure, so even though the temperature inside the oven has not reached 200°C, All segments corresponding to the temperature display in 10°C increments from 130°C to 200°C are lit.
The temperature will be displayed as "200℃". In this case, since the actual temperature inside the oven is 190° C., the display characters 43 “preheating” are maintained in a blinking state. Next, when the temperature inside the oven rises to 210° C., the segment 45 corresponding to that temperature is lit and the display character 43 of “hold” is blinked, as shown in FIG.
At this point, the user is notified that preheating has ended.

In this way, in conventional heating cookers, the temperature inside the oven is displayed as is, but when the temperature inside the oven reaches 190℃, the pre-displayed 200℃ segment is displayed. 45
Since the segments 45 with temperatures below 190 and 190
I get the impression that the preheating operation ends when the temperature reaches ℃. However, at this point, preheating has not yet been completed, so the temperature inside the oven is
There is a time lag between when the temperature rises to 210°C and when the actual preheating operation ends, and the user has to wait impatiently during that time.

Purpose of the invention This invention was made in view of the above circumstances, and its purpose is to make the actual end time of the preheating operation coincide with the time when the end of the preheating action is determined by looking at the display section. The objective is to provide a heating cooker that can.

Structure of the invention In order to achieve the above object, this invention includes an oven for storing food, a heater for raising the temperature inside the oven, and an input means for setting the temperature inside the oven. , a control means for controlling the energization of the heater so that the temperature inside the oven reaches the temperature set by the input means, and a temperature for displaying the temperature inside the oven in a simulated analog manner using a plurality of segments arranged in a bar shape. It consists of a display section and a display control circuit that controls the display of the temperature display section, and the display control circuit lights up and displays a segment corresponding to the internal temperature set by the input means, and also turns on the heater. As the temperature inside the refrigerator rises as the temperature in the refrigerator increases as the temperature in the refrigerator increases, the segments on the low temperature side are lit up sequentially from the segments on the high temperature side, and at least the segment one below the segment indicating the temperature inside the refrigerator set above is displayed. The light is displayed at the time of transition from preheating to preheating maintenance, that is, when the temperature inside the refrigerator rises to a preset temperature inside the refrigerator.

Example The first example that embodies this idea will be described below.
This will be explained with reference to FIGS. As shown in FIGS. 1 to 3, an outer box 1 of the cooking device is formed into a hollow box shape with an opening at the front, and a display panel 4 is disposed at the lower front of the outer box 1. As shown in FIGS. An oven 5 with an open front is mounted and fixed inside the outer box 1. or,
The opening of the oven 5 is opened and closed by a door 7. A magnetron 8 is disposed below the oven 5, and high frequency energy supplied from the magnetron 8 is introduced into the oven 5 via a waveguide 9.

As shown in FIG. 2, a turntable 14 is attached to the upper end of the rotating shaft 10 at the bottom of the oven 5, and a food placement plate 15 for placing food is detachably mounted on the turntable 14. is supported by Then, based on the drive of the motor 16,
The turntable 14 is rotationally driven together with the rotating shaft 10 via a gear device 17 .

An air passage cover 20 is attached and fixed to the outer surface of the rear wall of the oven 5, and the air passage cover 20 and the oven 5
The rear wall of the oven 5 is provided with an inlet 21 consisting of a large number of small holes arranged concentrically so as to communicate with the inside of the oven, and an air outlet 21 consisting of a large number of small holes formed in a rectangular area extending vertically. 22 are formed at a predetermined interval, and a blowing fan 23 is disposed within the air passage cover 20 so as to face the suction port 21 . This blower fan 23 is rotationally driven by a motor 24 attached to the outer surface of the air passage cover 20. On the other hand, a heater 25 wound like a coil spring is disposed inside the air passage cover 20 so as to face the air outlet 22, and is attached to the right side surface of the air passage cover 20 at both ends thereof. Then, based on the operation of the ventilation fan 23, the oven 5
The air inside the refrigerator passes through the intake port 21 to the air passage cover 20
After being sucked into the oven 5, the heated air is heated by the heater 25 and introduced into the oven 5 through the air outlet 22. Further, a thermistor 26 for temperature detection is arranged on the right side wall of the air passage cover 20 between both ends of the heater 25. Note that the outer peripheral wall of the oven 5 and the outer peripheral wall of the air passage cover 20 are covered with a heat insulating material 27.

Next, the configuration of the display panel 4 will be explained with reference to FIGS. 1, 4, and 6. A cooking start switch 30, various automatic cooking keys 31, manual cooking keys 32, a display section 33, and the like are arranged on the display panel 4. Automatic cooking key 31 is magnetron 8
A plurality of keys 34 are used to perform various microwave dishes using the heater 25, and a plurality of keys 35 are used to perform various oven dishes using the heater 25. It is composed of a plurality of keys 36 for cooking. Further, the manual cooking key 32 is a key 3 for changing the heating intensity by the magnetron 8.
7, 38, an oven preheating key 39 and an oven cooking key 40 for operating the heater 25. Further, below the automatic cooking key 31 and manual cooking key 32, there are provided a reservation key 41 used to reserve a predetermined cooking, a cancel key 42 used to cancel selected cooking, and the like.

The display section 33 includes display characters 43 that light up and display when the corresponding various keys are operated, a numerical display section 44 for displaying the numbers attached to the various keys, cooking time, and time, and the current oven interior. Temperature display portions 47 each consisting of a plurality of segments 45 arranged in a bar shape and temperature display numbers 46 are provided to display the temperature in the refrigerator and the internal temperature preset by a temperature setting knob 48 to be described later. It is being The segments 45 are arranged at every 10°C, and the temperature indicating numbers 46 are arranged at every 50°C in the range of 150°C to 250°C. The temperature set by a temperature setting knob 48, which will be described later, and the temperature inside the oven are both displayed in a simulated analog manner by both 45 and 46.

Below the display section 33 is a temperature setting knob 48 as an input means for presetting the internal temperature of the oven 5 when manually cooking oven food.
is provided, and when the oven heating temperature for manual cooking is set to, for example, 200° C. by the temperature setting knob 48, the segment 45 corresponding to that temperature is lit, as shown in FIG. 6a. Further, a timer knob 49 for setting the heating time is provided to the right of the temperature setting knob 48. Furthermore, a time set button 50 for setting the time is attached to the right side of the display section 33.

This heating cooker has a control circuit 51 shown in FIG.
is built-in, and its control circuit 51 has various keys 3.
1, 32, a predetermined signal is input based on the operation of the temperature setting knob 48 and the timer knob 49, and temperature data inside the oven is input from the thermistor 26. The control circuit 51 operates the display section 33, heater 25, and magnetron 8 based on various input data.

Further, in this embodiment, due to the action of the control circuit 51, the temperature inside the refrigerator displayed by the segment 45 is displayed 20° C. lower than the actual temperature.

Now, when performing oven cooking by manual cooking, first, when the oven preheating key 39 is pressed, the display characters 43 "oven" and "preheating" are illuminated, as shown in FIG. 6a. Next, when the temperature setting knob 48 is rotated, only one segment 45 corresponding to the rotation angle is turned on. Therefore, the knob 4 can be moved at the desired angular position.
By stopping the rotation of 8, the preheating temperature can be set within the range of 130°C to 250°C in 10°C increments. In this embodiment, as shown in FIG. 6a,
The temperature is set at 200℃.

Subsequently, when the cooking start switch 30 is operated, the display character 43 of "preheating" flashes, and the operation of the ventilation fan 23 and heater 25 is started. When the temperature inside the oven rises based on the operation of the heater 25, each segment 45 is sequentially turned on from the low temperature side based on the operation of the thermistor 26. And the temperature inside the refrigerator is higher than the actual temperature.
Since the display is 20°C lower, when the temperature inside the refrigerator reaches 190°C, the segment 45 corresponding to the temperature of 130°C to the segment 45 corresponding to the temperature of 170°C is continuous, as shown in Figure 6c. and then it lights up. When the temperature inside the refrigerator reaches 200°C based on the subsequent operation of the heater 25, segments up to the segment 45 corresponding to 180°C are lit.

Next, when the temperature inside the refrigerator reaches 210℃,
The segment 45 corresponding to the temperature of 190°C is lit, the segment 45 from 130°C to 200°C is lit continuously in a bar shape, and the display character 4 of "preheating" is lit.
3 stops blinking, and at the same time, the blinking of the display characters 43 of "hold" starts.

Then, when the temperature inside the oven 5 reaches 210°C, the operation of the heater 25 is stopped, and after that, when the temperature inside the oven 5 drops to 200°C, the operation of the heater 25 is started again. By repeating this operation, the temperature inside oven 5 is maintained between 200℃ and 210℃, and during that time,
The display character 43 of "hold" flashes.

As mentioned above, in this embodiment, there is a gap between the temperature inside the refrigerator and the temperature display so that a temperature display lower than the actual temperature inside the refrigerator is displayed during preheating.
Since the difference of 20° C. is provided, each segment 45 can be lit continuously only at the end of the preheating operation, and the display section 33 can be illuminated continuously only at the end of the preheating operation.
This coincides with the time point at which the end of the preheating operation is determined by looking at the time, so that the end time of the preheating operation can be easily and reliably known.

Effects of the invention As detailed above, this invention changes the temperature inside the oven and the temperature display so that a temperature display lower than the current inside temperature is displayed during preheating to raise the inside temperature of the oven to the set temperature. Since the difference is provided, an excellent effect can be achieved in that the actual end time of the preheating operation can be made to coincide with the time when the end of preheating is determined by looking at the display section.

[Brief explanation of drawings]

Figures 1 to 6 show an embodiment of this invention, in which Figure 1 is a perspective view of the heating cooker, Figure 2 is a side sectional view, and Figure 3 is a view of the cooking device. 4 is an enlarged front view of the display section, FIG. 5 is a block diagram of the heating cooker, and FIG. 6a
-e are explanatory diagrams of a temperature display section. FIG. 7 is an explanatory diagram of a temperature display section in a conventional example of this invention. In the figure, 5 is an oven, 25 is a heater, 2
6 is a thermistor, 45 is a segment, 47 is a temperature display section, 48 is a temperature setting knob as an input means, and 51 is a control circuit as a display control circuit (26 and 51 constitute the control means).

Claims (1)

[Scope of Claim for Utility Model Registration] Oven 5 for storing food, heater 25 for increasing the temperature inside the oven, input means 48 for setting the temperature inside the oven, and input means therefor Control means 26 and 51 control the energization of the heater 25 so that the temperature inside the oven reaches the temperature set by 48, and a plurality of segments 45 arranged in a bar shape display the temperature inside the oven in a simulated analog manner. It consists of a temperature display section 47 and a display control circuit 51 that controls the display of the temperature display section 47, and the display control circuit 51 lights up a segment corresponding to the internal temperature set by the input means 48. At the same time, as the temperature inside the refrigerator rises as the heater 25 is energized, the segments on the low temperature side are lit up sequentially from the segments on the high temperature side, and at least one of the segments indicating the set temperature inside the refrigerator is displayed. the segment below,
A heating cooker characterized by lighting and displaying at the time of transition from preheating to preheating maintenance, that is, when the internal temperature of the refrigerator rises to a preset internal temperature.