JPS5835922Y2 - heating cooker - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heating cooker capable of cooking rice using a pot in addition to roasting.

Conventionally, in heating cookers such as electric ovens, a pot is housed in a heating chamber provided in the oven body, and electric heaters provided at the top and bottom of the heating chamber are energized to generate heat only until the rice in the pot is cooked. There are some that are constructed so that they can also be used to cook rice.

However, with this configuration, the energization time of the electric heater during rice cooking is set by a timer device, so the energization time must be set optimally according to the amount of rice each time rice is cooked. Not only does it have the drawback that the setting operation is complicated and difficult to use, but it is actually difficult to set the time limit of the timer device accurately for the time required for the so-called dry-up to complete cooking, and the rice is not completely cooked. This method has the disadvantage of becoming unstable, making it impossible to obtain a satisfactory rice cooking function.

The present invention was developed in view of the above circumstances, and its purpose is to always maintain a stable state of cooked rice in a device that can be used to cook rice in a pot in addition to regular roasting. To provide a highly practical heating cooker that can be used to cook rice in a variety of ways, has good usability, cooks rice deliciously, and improves heating efficiency.

An embodiment in which the present invention is applied to an electric oven will be described below with reference to the drawings.

First, in FIG. 1, reference numeral 1 denotes an oven body as a cooking device body, which is made up of an outer box 2 having a horizontally long rectangular shape and an inner box 3 having a horizontally long rectangular shape inserted therein. is used as a heating chamber 4 for roasting.

Although not shown, a front opening facing into the heating chamber 4 is formed at the front of the oven main body 1, and a door for opening and closing the front opening is pivotally provided.

Reference numerals 5 and 6 denote an upper electric heater and a lower electric heater, respectively, which are bent into a substantially rectangular shape, and these are arranged at the upper and lower parts of the heating chamber 4 via insulators 7 and 8, respectively.

Reference numerals 9 and 10 are mounting shelves attached to the inner surfaces of the left and right side panels of the inner box 3 so as to face each other.

Reference numeral 11 denotes an operation panel attached to the right end portion of the front surface of the oven body 1, which includes a temperature regulator 12, which will be described later.
A changeover switch 13 and a timer device 14 are attached.

On the other hand, 15 is a temperature switch device for cooking rice disposed at the lower part of the heating chamber 4, which consists of a cover member 16 fixed to the inner surface of the bottom plate of the inner box 3 with screws, etc. A heat transfer case 17 having an open bottom surface and having a top portion protruding upwardly from the cover member 16 and is disposed so as to be movable up and down while being prevented from being pulled out upwardly within the cover member 16; It is composed of a compression coil spring 18 that urges the heat transfer case 17 upward, and a heat-sensitive switch 19 disposed inside the heat transfer case 17.

The heat-sensitive switch 19 is, for example, 130
A type with a large differential that turns off at 50°C and turns on at 50°C, for example, is used.

Reference numeral 20 denotes a bottomed cylindrical pot with an open top, and a flange 20a is provided outwardly protruding from the edge of the top opening.

Further, 21 is a heating plate which is detachably placed between the above-mentioned storage shelves 9 and 10 and partitions the inside of the heating chamber 4 into an upper space A and a lower space B in the placed state. An opening 21a is formed.

At this time, the pot 20 is inserted into and removed from the circumferential opening 21a, and in the inserted state, the flange 20a is placed on the edge of the circumferential opening 21a. While being supported, the sides of the pot 20 correspond to the lower space B in the supported state.

In addition, 22 is a lid for a pot. Now, the electrical configuration will be explained according to FIG.

That is, 23 is a plug inserted into a power outlet (not shown), one end of which is connected to the bus bar 24 via the timer switch 14a of the timer device 14, and the other end is connected to the bus bar 25.

Here, the timer device 14 is configured to turn on the timer switch 14a when a time setting operation is performed, and turn off the timer switch 14a when the set time has elapsed.

Further, the selection switch 13 has a changeover switch 13a and open/close switches 1, 3b, and 13C that operate in conjunction with each other, and the index of the operation knob 13d (see FIG. 1) corresponds to the letters on the operation panel 11, Selector switch 1 when matching the character OFF among Off, Up, Down, Cooking Rice, and East
3. Hold the movable contact piece C of 3a in the neutral state and turn off the open/close switches 13b and 13C°, and when the indicators match the letters, top, and bottom and roasting cooking is selected, the changeover switch 13a is closed. Turn on the opening/closing switch 13b and turn off the opening/closing switch 13C, and when the indicator matches the character "cooking rice" and rice cooking is selected, switch between the contacts c-1) of the changeover switch 13a. When turned on, the on/off switches 13b and 13C are turned off, and when the indicator matches the character "yeast" and yeast fermentation cooking is selected, the movable contact piece C of the changeover switch 13a is held in a neutral state, and the on/off switch is turned off. 13 C is turned on and the opening/closing switch 13b is turned off.

Thus, the series circuit of the temperature regulator 12, the open/close switch 13b and the upper electric heater 5 is connected between the busbars 24 and 25, and the series circuit of the lower electric heater 6 and between the contacts a and c of the changeover switch 13a is connected. A diode 26 for limiting the power supplied to the on-off switch 13C1 is connected in parallel with the series circuit of the on-off switch 13b and the upper electric heater 5, and is connected between the bus bar 24 and the common connection point of the on-off switch 13b and the upper electric heater 5. For example, the set temperature is 60
A series circuit of thermoswitches 27 of 0.degree. C. is connected.

Further, the heat-sensitive switch 19 is connected between the bus bar 24 and the fixed contact piece of the changeover switch 13a.

Next, the operation of this embodiment having the above configuration will be explained.

Now, when cooking rice using the pot 20, the pot 20 containing the rice 28 and water 29 is supported on the heat plate 21 as described above, and the heat shield plate 21 in this state is heated together with the pot 20. The pot 20 is stored in the chamber 4 and placed between the mounting shelves 9 and 10, and a pot lid 22 is attached to the upper opening of the pot 20.

Then, the inside of the heating chamber 4 is partitioned into an upper space A and a lower space B by the heat plate 21, and the pot 20 is supported by the heat plate 21 and most of it is located in the lower space B. The heat transfer case 17 is pressed against the outer bottom of the pot 20 by the spring force of the compression coil spring 18.

Then, with the door closed, the selection switch 13 is used to select rice cooking, and at the same time, the timer device 14 is set to, for example, 60 minutes, and the timer switch 14a is set.
When turned on, the lower electric heater 6 is energized through the timer switch 14a, the heat-sensitive switch 19, and the contacts 1) and 13a of the changeover switch 13a and ignites, thereby heating the pot 20 and starting rice cooking. be done.

After that, when the rice 28 is cooked and the inside of the pot 20 becomes dry, the heat sensitive switch 1 of the temperature switch device 15
9 detects the rapid temperature rise at the bottom of the pot 20 at this time and turns off, thereby cutting off the power to the lower electric heater 6 and completing the rice cooking.

By the way, during the above-mentioned rice cooking, the lower space B of the heating chamber 4 is heated by the lower electric heater 6, and @20
Since the entire area outside the road is uniformly heated by the thermal atmosphere in the lower space B, delicious rice can be obtained in the same manner as when rice is cooked using a so-called oven.

Moreover, in this case, the heat plate 21 functions to prevent the heat of the lower electric heater 6 from escaping to the upper space A, so that heating efficiency is improved.

According to the above embodiment, the temperature switch device 15 having the heat transfer case 17 that contacts the bottom of the pot 20 is provided, and when the bottom of the pot 20 reaches a predetermined temperature by the temperature switch device 15, That is, since the lower electric heater 6 is configured to turn off the power when rice cooking is completed, the timer device 14 is used to optimally set the energization time of the lower electric heater 6 each time according to the amount of rice 28 during rice cooking. This method has the advantage that it can eliminate the need for such troublesome operations, making it easy to use, and that there is no risk of the cooked rice becoming unstable due to the influence of the so-called water level during rice cooking.

In addition, for roasting cooking or yeast fermentation cooking, remove the pot 20, circumferential lid 22, and heat plate 21 from the heating chamber 4, and place the saucer 30 (indicated by the two-dot chain line in FIG. 1). shelf 9,1
0, and a plate or the like containing the food to be cooked is placed on the saucer 30, and in this state, select roasting cooking or yeast fermentation cooking with the selection switch 13, and at the same time set the timer device 14. This can be done by making appropriate settings.

In this case, as shown in FIG.
Even if the temperature switch device 15 is placed on the lowest stage of the heat transfer case 10, there is a predetermined distance between the tray 30 and the heat transfer case 17, so that the temperature switch device 15 does not get in the way.

Further, although the above embodiment is a case in which the present invention is applied to an electric oven, it can be applied to general cooking devices such as toaster ovens.

According to the present invention, as is clear from the above explanation, in a heating cooker that can be used to cook rice using a pot in addition to regular roasting, it is possible to always maintain a stable state of cooked rice. It is possible to provide a heating cooker which is of practical value, which can be used to cook rice deliciously and improve heating efficiency.

[Brief explanation of drawings]

The drawings show an embodiment in which the present invention is applied to an electric oven, with FIG. 1 being a longitudinal sectional front view and FIG. 2 being an electric circuit diagram. In the figure, 1 is an oven main body (cooking device main body), 4 is a heating chamber for roasting, 5 and 6 are an upper electric heater and a lower electric heater, respectively, 13 is a changeover switch, 15 is a temperature switch device,
20 is a pot, and 21 is a hot plate.

Claims (1)

[Scope of utility model registration request] 1. a cooking device main body having a heating chamber for roasting in which electric heaters are respectively disposed in the upper and lower parts; a rice cooking pot that is detachably disposed in the heating chamber and heated by the lower electric heater; a hot plate that is detachably installed in the heating chamber and partitions the heating chamber into an upper space and a lower space that corresponds to the side of the pot; and a temperature switch device that turns off the power to the lower electric heater when the bottom reaches the temperature at which rice is cooked. 2. The heating cooker according to claim 1, which is a utility model, characterized in that the pot is supported by a plate or a hot plate.