JPS6356446B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the operation section of a composite high-frequency heating device, and particularly to an improvement in usability from an operation aspect. Recently, in addition to high-frequency heating devices, oven cooking using electric heating devices, grilling (roasting) cooking, and even steaming with the addition of steam generators, one oven is equipped with various heating means, and each single heating means can be used to , a so-called complex high-frequency heating device that can be used in combination with high-frequency heating, which is characterized by the ability to heat the center in a short time, for example, by heating the center with high-frequency waves and then roasting the surface with a grill. has become the mainstream of high-frequency heating equipment. However, in general, the more heating means there are, the more the above-mentioned combinations of heating, the more complicated the operation becomes. This is because the need for circuit switching, selection, display, etc. arises as described below, and the means for doing so appears on the operating section.

1 Circuit switching operation (1) Switching the timer circuit.

(2) Switching loads on circuits such as heaters.

(3) Comes with a turntable that rotates and stops.

(4) Load strength switching (heater, high frequency).

2 Selection operation (1) What to cook?

(2) Which heating means to use, or in combination with which heating means?

(3) Which timer to use?

3 Display (1) Display of each selection device (2) Which timer is currently operating, which heating means is operating, whether it is operating or not, etc.

(3) What kind of heating means is it operating, or is it about to operate?

4. Others (1) Opening/closing air guides, exhaust guides, etc. with steam generators, etc.

And so on, the list is endless.

Therefore, the present invention attempts to solve these complicated electrical and mechanical switching and display operations by operating a single knob.

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

For the sake of explanation, parts with the same names are denoted by the same reference numerals in each figure.

In Figures 1 and 2, 1 is the main body, 2
is the door, 3 is the operation panel, 4 and 5 are timer knobs, for example 4 is a short timer for high frequency strong output,
Reference numeral 5 is preset as a long time timer for heater heating, steam heating, high frequency low output, etc., and a time scale is provided on the panel 3 around the knob 4 as shown in b. 6 is a switching knob according to the present invention, around which is provided a cooking classification table 10 divided into heating means a to d, and by adjusting the knob to this cooking classification table, switching of the circuit,
It is used to operate various switching operations in conjunction with each other, such as display switching and switching of on-off valves, which will be described later. Details of this method will be provided separately later. 7 is a temperature control knob, and a temperature scale j is provided around it. 8 is a cooking start button, 9 is an operation lamp indicating that cooking is in progress, 11
is a display drum that is operated in conjunction with the aforementioned switching knob 6. For example, when the switching knob is set to "Oven" as shown in Figure 2, a display such as "Electric Power Continuous Cooking Oven" will appear on the drum as shown in the figure. If you use Timer 4, which corresponds to ``Electric Power'' at the top, alone, along with the arrow i and the character display ``Using Timer'' next to it, you can set only Timer 5 for high-frequency, high-output independent operation. For example, if you set both timers 4 and 5, the oven will operate continuously in the direction of arrow f, that is, timer 5 will operate first to perform oven cooking, and after the predetermined time, timer 4 will operate. Indicates that high frequency high power automatically operates. These can be set in the most effective shape depending on the purpose of cooking. What this means is to display the heating means set by the selection of the switching knob 6, and to display which timer and how to use it. Naturally, the same meaning will be displayed even if the settings are set in different cooking categories. In addition to switching the circuits using the switching knob 6, it also displays in an organized manner which timer is used to operate the plurality of heating means. Reference numeral 12 is an indicator lamp indicating the operating state of the set timer.It indicates the operation of the timer, and by disposing it in the same position as the heating means e and g displayed on the display drum 11, it is possible to indicate which heating means. It will also show whether the food is being cooked.

Figure 3 shows the internal structure.
is a mounting panel on which the aforementioned timers 4 and 5, the changeover switch 14 which can be said to be the main body of the changeover knob 6, and various other parts are mounted. A changeover switch 14 fixed to the panel 13 with a screw has a cam 16 provided on its main shaft 15, and operates an operating lever 23 provided on the panel 13 by means of a pin serving as a fulcrum. Details will be explained separately with reference to FIGS. 4, 5, and 6. Further, a belt gear 17 is provided, and the belt 19 and gears 20 and 21 are rotated to rotate the drum 11 in conjunction with each other. The drum 11 is the mounting bracket 2
It is fixed to the panel 13 with screws 2 and 3.
Reference numeral 18 is used to indicate that the changeover switch 14 has been reliably switched, and is displayed in display windows k and l provided in the cooking classification table in FIG. Displayed in color for clear identification. Although the display on the operation panel 3, its purpose, function, and structure have been explained above, the composite high-frequency heating device further requires mechanical switching means, as described at the beginning. This is because, with just a high-frequency heating device, all you have to do is introduce magnetron cooling air into the oven and exhaust it from a separate outlet to exhaust odors, steam, etc.
There is no need for heating with a heater. In fact, if you do so, the temperature inside the refrigerator will not rise and you will need a heater with a higher output than necessary, which is undesirable from the point of view of energy conservation and even more unacceptable from the power situation of ordinary households. On the contrary, in terms of energy saving, etc., it is preferable to keep the inside of the refrigerator in a sealed state in order to increase efficiency. Furthermore, in recent years high-frequency heating devices have become common with turntables designed for uniform heating, and it goes without saying that food is heated more uniformly by rotating it, not only with high-frequency heating but also with heater heating. . Furthermore, from a cost standpoint, it has become common to use the fan motor for supplying the magnetron cooling air as described above and for driving the turntable. Considering these backgrounds and conditions, what will be explained below with reference to FIGS. 4 to 6 can be said to be inseparable for the composite high-frequency heating device.

In FIG. 4, 23 is an oven, 24 is a magnetron 32, and at the same time, as mentioned above, during high-frequency heating, steam generated from the food in the oven is introduced into the oven through an air guide 29.
This is a fan that sends out air to exhaust odors, etc. through an exhaust guide 30. 25 is a power mechanism that uses a fan motor that powers the fan, a reduction mechanism and gears that change the direction of rotation inside, and drives a rotating shaft 26. This is a schematic structure when the turntable is to be driven by one motor 25 by a belt 28 which is passed through a pulley 27 and a pulley (not shown) provided coaxially with the turntable 31.

As mentioned above, this is a case where the magnetron 32 cooling fan motor is used to rotate the turntable 31 during high frequency heating and heater heating, and in such a case, the wind is used as an air guide during high frequency heating. It is necessary to introduce the air into the oven chamber through the oven chamber 29 and exhaust it outside through the exhaust guide 30, and it is also necessary to prevent the air from flowing into the oven chamber when heating the oven. FIG. 6 shows an on-off valve mechanism for controlling the inflow of air into the refrigerator. The wind c coming from the fan motor passes between the cooling fins of the magnetron 32 and is sent to the air guide 2.
9, and if the on-off valve 34 is open, it flows into the oven through the punched hole E provided in the oven wall. In other words, the on-off valve 34 directly controls whether or not the air is allowed to enter the refrigerator, and this is operated by operating the aforementioned switching knob. FIG. 5 shows an on-off valve in the exhaust guide, which is also operated by operating a switching knob. Reference numeral 37 denotes an on-off valve, F is a punched hole for internal exhaust provided on the upper wall of the oven (not limited to the upper wall), and G is an exhaust port formed by a punched hole provided on the main body. The on-off valves in the exhaust guide and air guide not only allow wind to flow in and prevent air from being discharged, but also prevent steam from being discharged during steam cooking and prevent heat from being discharged when heating the heater, thereby increasing efficiency. is as described above. Now, regarding the operation, as mentioned above, when the switching knob 6 in FIG. 3 is turned in the direction of the arrow, the display drum 1
1. The cam 16 also rotates, and in a certain position (for example, in the case of an oven as shown in Fig. 2) a cam designed to correspond to the setting of the changeover switch is installed at the top of the cam on the operating side of the operating lever 23. The lever 23 is rotated in the direction of arrow c centering on the pin which is the fulcrum. The tip of the lever divided from the movable fulcrum N moves in the direction of arrow A and connects to the operating arm 36 of the on-off valve 34 shown in FIG. 6, thereby opening the on-off valve in the direction of arrow k. Similarly, on the exhaust guide 30 side, as shown in FIG.
Further, by moving the tip of the divided lever (arrow B), the operating arm 39 of the on-off valve 37 can be moved to rotate the valve 37 in the direction of the arrow l to open it. Note that 33 is a rubber-like seal member for maintaining airtightness.

As explained above, according to the present invention, (1)
Electrical and mechanical switching operations, (2) name selection operations, (3) displays, etc. can all be solved with just one knob operation, and the display section that operates in conjunction with the cooking selection switch mentioned above allows you to select the heating means cooking. As a result, the instructions for the timers that need to be used properly become clear, and at the same time, the operational status of the timer and heating means that are in use becomes clear, which can dramatically improve usability.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a heating cooker showing an embodiment of the present invention, Fig. 2 is an enlarged front view of the main operation panel section, and Fig. 3 is an exploded perspective view of the main part cooking selection switching section. Figure 4 is a needle view of the heating chamber, Figures 5 and 6.
The figure is a sectional view of the main air guide portion. 1...Main body, 3...Operation panel, 4, 5
...Timer knob, 6...Switching knob, 7...Temperature adjustment knob, 8...Cooking start button, 14
...Selector switch, 23...operation lever.

Claims (1)

[Claims] 1. A cooking selection changeover switch that includes a plurality of heating means such as a high-frequency heating means, an electric heating stage, and a steam generation means, and selects the heating means according to the purpose of cooking, and a cam provided coaxially with the changeover switch; It has a control lever operated by the cam, and at the same time as cooking is selected with the changeover switch, the circuit of each of the heating means can be switched, and the control lever can be used to open/close the air guide, hike guide, etc. according to the heating means. When operated, the heating device operates in conjunction with the cooking selection changeover switch, is provided near the timer, and is provided with a display drum that displays the timer being used, each heating means, and the heating direction during continuous cooking. Cooking device.