JPS63101625A - Cooker - Google Patents

Abstract

PURPOSE:To make it possible to operate with easiness and attempt simplification and cost-down of a control circuit and avoid the influx of noises and prevent erroneous operation by taking in a first cooking condition and a second cooking condition alternately everytime a key provided at an operation section is operated and carrying out cooking in accordance with the cooking conditions that are taken in. CONSTITUTION:An operation panel 13 is provided with a display section 14 in the upper section and an operation knob 15 for setting cooking conditions and a group 16 of key switches for inputting cooking conditions from the middle section to the lower section. And of the group of key switches 16 a prescribed key switch corresponds two kinds of cooking conditions. By the first key operation a first cooking conditions is taken in. By the second key operation a second cooking condition is taken in. After this by the key operation in an odd number order the first cooking condition is taken in and by the key operation in an even number order the second cooking condition is taken in. With this arrangement one key switch is made to correspond to two kinds of cooking conditions and as a whole the number of key switches can be reduced a great deal, allowing the area of each key switch to become larger, which will make the operation easy.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a cooking appliance having a key for inputting cooking conditions on an operating section.

(Prior art) A cooker, such as a microwave oven, has a fifth section on the front of the main unit.
Some devices are equipped with an operation panel (operation section) as shown in the figure.

In FIG. 5, 1 is an operation panel provided on the front of the main body, and a display section 2 is provided on the upper part of this operation panel 1.
From the middle to the bottom is the operation knob 3 for setting cooking conditions.
A key switch group 4 for inputting cooking conditions is also provided.

By the way, in such an operation panel 1, since there are a large number of key switches, the area occupied by one key switch is very small, and there is a problem that it is difficult to operate, such as accidentally pressing an adjacent operation key. be.

Further, as shown in FIG. 6, a key matrix circuit 5 is constituted by the key switch group 4, and the key matrix circuit 5 includes input ports P20 to P31 and output ports of a microcomputer 6, which is the main control section. (For scan signal output) Connected to P10 to P13. However, since the number of input/output ports is small compared to the number of key switches, the actual situation is that the decoder 7 is connected to the output ports P10 to P13 to artificially increase the number of output ports. In other words, the control circuit becomes more complicated due to the provision of the decoder 7, and furthermore, this results in an increase in cost.

Furthermore, the operation panel 1 is provided with a conductive pattern for the key matrix circuit 5, but in situations where there are a large number of key switches, the conductive pattern is routed around the edge of the operation panel 1, and static electricity is generated there. There is a problem in that noise due to discharge etc. easily flows in. In other words, noise may flow into the microcomputer 6 through the conductive pattern, causing malfunction.

(Problems to be solved by the invention) This invention was made in view of the above circumstances.
The purpose of this is to enable easy operation when inputting cooking conditions, simplify the control circuit and reduce costs, and prevent malfunctions by avoiding the inflow of noise from the operation section. Our goal is to provide the best cooking equipment possible.

[Structure of the Invention] (Means for Solving the Problems) A key provided on the operation unit and a first
means for alternately taking in the cooking conditions and the second cooking conditions;
and means for executing cooking according to the imported cooking conditions.

(Function) The first cooking condition is loaded by the first key operation. When the second key operation is performed, the second cooking condition is loaded. Thereafter, the first cooking condition is loaded with an odd-numbered key operation, and the second cooking condition is loaded with an even-numbered key operation.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, 11 is the main body of the microwave oven, on the front of which a door 12 is pivoted so that it can be opened and closed.
An operation panel (operation section) 13 is provided.

A heating V (not shown) is disposed inside the main body 11 corresponding to the door 12, and high-frequency radio waves are supplied into the heating chamber from a magnetron (not shown), which is a frequency generator. There is.

In the operation panel 13, a display section 14 is provided at the top, and an operation knob 15 for setting cooking conditions and a group of key switches 16 for inputting cooking conditions are provided from the middle to the bottom. Of the key switch group 16, predetermined key switches correspond to two types of cooking conditions.

For example, the key switch at the top “Range Strong/Weak”
corresponds to the first cooking condition "Microwave High" and the second cooking condition "Microwave Low", and the key switch "Open/Grill" corresponds to the first cooking condition "Oven" and the second cooking condition "Grill". Compatible. In this case, of the two types of cooking conditions that correspond to one key switch, the one that is used more frequently is the first cooking condition, the one that is less frequently used is the second cooking condition, and the one that is used less frequently is the second cooking condition. The cooking conditions are written on the upper left side of the key switch surface, and the second cooking conditions are written on the lower right side of the key switch surface.

On the other hand, as shown in FIG. 3, a key matrix circuit 17 is constituted by the key switch group 16, and the key matrix circuit 17 is connected to the input ports P20 to P30 and the output ports P10 to P10 of the microcomputer 18, which is the main control section. Connected to P13.

Next, the operation of the above configuration will be explained with reference to FIG. 4.

First, a ROM (read-only memory) of the microcomputer 18 stores in advance a variety of cooking conditions corresponding to each key switch of the key switch group 16.

When, for example, the key switch "Microwave high/low" of the key switch group 16 is pressed first, the cooking conditions "Microwave high" and "Microwave low" are successively displayed. At this time,
Since the key switch "Orange High/Weak" is pressed for the first time, the frequently used cooking condition "Microwave High" is selected, and it is set to RA of the microcomputer 18.
It is stored in the first area of M (random access memory).

At the same time, the contents of the first area (“high range”) are displayed on the display unit 14.

Next, use the operation knob 15 to set the cooking condition, for example, the cooking time "1".
When 0 minutes'' is set, it is stored in the first area of RAM along with the cooking condition "Microwave High".Then, the contents of the first area ("Microwave High" and "10 minutes") are stored in the RAM. is imported (stored) into the cooking execution area of
, and displayed on the display unit 14.

After that, when the same key switch "Microwave High/Low" is pressed, the cooking conditions "Microwave High" and "Microwave Low'° are read out again, but at this time, when the key switch "Microwave High/Low" is pressed, Since this is the second time, the less frequently used cooking condition "Microwave Low" is selected, and it is set to 2nd in RAM.
It is memorized in the times area. At the same time, the contents of the second area ("range low") are displayed on the display section 14.Furthermore,
When cooking time “20 minutes” is set with operation knob 15,
This is stored in the second area of the RAM together with the cooking condition "Microwave low". Then, the contents of the second area (
“Microwave low” and “20 minutes”) are taken into the cooking execution area of the RAM (updated and stored) and displayed on the display unit 14.

From then on, when the key switch "Microwave High/Low" is pressed an odd number of times (3rd, 5th, etc.), the contents of the first area ("Microwave High" and "10 minutes") will be changed to the cooking execution area. (updated and stored), and the display unit 14
is displayed. At this time, when the operation knob 15 is operated, the cooking condition "10 minutes" stored in the first time area and the cooking execution area is updated. Also, if the key switch “Range Strong/Weak” is pressed an even number of times (
4th time, 6th time, etc.), the contents of the second time area (“Microwave low°' and “20 minutes”) are taken into the cooking execution area (updated and stored), and displayed on the display unit 14. At this time, when the operation knob 15 is operated, the cooking condition 20 minutes' stored in the second area and the cooking execution area is updated.

In this way, when the key switch "Start Cooking" is pressed with the input and setting of the cooking conditions completed, cooking is executed based on the cooking conditions loaded into the cooking execution area at that time. In other words, if the cooking conditions "Microwave high" and "10 minutes" are set, the magnetron will oscillate at high output for 10 minutes. If "minutes" have been taken in, the magnetron will oscillate at low power and will run for 20 minutes.

In this way, by making one key switch correspond to two types of cooking conditions, the total number of key switches can be significantly reduced. Therefore, the area of each key switch can be increased, making it easier to operate. For example, it is possible to prevent inconveniences such as accidentally pressing an adjacent key switch. In addition, since there are fewer key switches, the scan signal output to the key matrix circuit 17 and the key signal acquisition from the key matrix circuit 17 can be sufficiently covered by the limited input/output ports of the microcomputer 18. There is no need to use a decoder at all, and the control circuit can be simplified. As a result, costs can be reduced. In fact, as shown in FIG. 3, the input port P31 is in an unused state, and the input port P31 can be effectively used for other functions.

On the other hand, conductive patterns for the key matrix circuit 17 are disposed on the operation panel 11, but since there are not many key switches, sufficient space can be secured for disposing the conductive patterns. In other words, the conductive pattern can be placed sufficiently away from the end of the operation panel 11. In other words, even if electrostatic discharge occurs, the resulting noise can be prevented from flowing into the conductive pattern and eventually into the microcomputer 18, and stable cooking without malfunction can be achieved at all times. Therefore, reliability is improved.

In the above embodiment, the number of key switches is not limited and can be set as appropriate depending on the situation.

In addition, the present invention is not limited to the above-mentioned embodiments, and various modifications can be made without changing the gist.

[Effects of the Invention] As described above, according to the present invention, the key provided on the operation section and the first cooking condition and the second cooking condition are set each time the key is operated.
Since a means for alternately inputting the cooking conditions and a means for executing cooking according to the input cooking conditions are provided, easy operation is possible when inputting the cooking conditions, and the control circuit can be simplified. In addition, it is possible to provide an excellent cooking device that can reduce costs and prevent malfunctions by avoiding the inflow of noise from the operating section.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the configuration of an operation panel in one embodiment of the present invention, FIG. 2 is an external perspective view of the same embodiment, and FIG. 3 is a diagram showing the configuration of the main part of the control circuit in the same large-wheeled example. FIG. 4 is a flowchart for explaining the operation of the same embodiment, FIG. 5 is a diagram showing the configuration of an operation panel in a conventional microwave oven, and FIG. 6 is a diagram showing the configuration of a control circuit in a conventional microwave oven. be. 13... Operation panel (operation unit), 16... Key switch group, 17... Key matrix circuit, 18... Microcomputer (main control unit).

Claims (3)

[Claims] (1) A key provided on the operation unit, a means for alternately importing a first cooking condition and a second cooking condition each time the key is operated, and cooking is performed according to the imported cooking condition. A cooking device characterized by comprising: a means for cooking. (2) The cooking appliance according to claim 1, further comprising means for displaying the input cooking conditions. (3) The cooking device according to claim 1 or 2, wherein the first cooking condition is used more frequently than the second cooking condition.