JPH0833203B2 - Cooking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) [0001] The present invention relates to a cooker provided with a key for inputting cooking conditions on an operating portion.

(Prior Art) Some cookers, such as microwave ovens, are provided with an operation panel (operation section) as shown in FIG. 5 on the front surface of the main body.

In FIG. 5, reference numeral 1 denotes an operation panel provided on the front surface of the main body, a display section 2 is provided on the upper part of the operation panel 1, and an operation knob 3 for cooking condition setting and a cooking condition input section are provided from the middle part to the lower part. A key switch group 4 is provided.

By the way, in such an operation panel 1, since the number of key switches is large, 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. is there.

As shown in FIG. 6, a key switch group 4 constitutes a key matrix circuit 5. The key matrix circuit 5 is an input port P20 to P31 and an output port (scan port) of a microcomputer 6 which is a main control section. (For signal output) Connected to P10 to P13. However, since the number of input / output ports is smaller than the number of key switches, the decoder 7 is connected to the output ports P10 to P13 to increase the number of output ports in a pseudo manner. In other words, the control circuit is complicated by the provision of the decoder 7, and the cost is increased.

Further, the operation panel 1 is provided with a conductive pattern for the key matrix circuit 5, but in a situation where there are a large number of key switches, the conductive pattern is drawn around the end portion of the operation panel 1 and static electricity is generated there. However, there is a problem that noise due to the electric discharge of 3 easily flows in. That is, noise may flow into the microcomputer 6 via the conductive pattern and cause a malfunction.

(Problems to be Solved by the Invention) The present invention has been made in view of the above circumstances, and an object of the present invention is to enable an easy operation when inputting cooking conditions and simplify the control circuit. It is an object of the present invention to provide an excellent cooker that can be made more efficient and cost-effective, and that can prevent malfunction from occurring by avoiding the inflow of noise from the operating section.

[Configuration of the Invention] (Means for Solving Problems) First storage means for storing a plurality of cooking conditions, a key provided on the operation unit, and this key is continuously pressed a plurality of times. Sometimes a first means for reading out the first cooking condition out of the cooking conditions stored in the first storage means for every odd number of pressing operations, and updating and storing this in the second storage means for cooking. When the key is continuously pressed a plurality of times, the second cooking condition among the cooking conditions stored in the first storage means is read for each even pressing operation, and the second cooking condition is read out. Second means for updating and storing in the storage means;
A means for displaying the cooking conditions updated and stored in the second storage means for each pressing operation of the key, and a cooking operation according to the cooking conditions stored in the second storage means in response to a start operation. And means are provided.

(Operation) When the user presses a key provided on the operation unit,
The first means reads the first cooking condition from the cooking conditions stored in the first storage means and updates and stores it in the second storage means.

When the user continuously presses the key, the second means reads the second cooking condition from the cooking conditions stored in the first storage means and updates and stores it in the second storage means. To do. As a result, the second storage means stores the second cooking condition in place of the stored first cooking condition.

Thereafter, the second storage means updates and stores the first cooking condition for each odd-numbered key operation when the key is continuously operated, and also for each even-numbered key operation. The cooking conditions of No. 2 are updated and stored.

In this case, since the cooking condition updated and stored in the second storage means is displayed, the user can confirm whether or not the cooking condition is appropriate.

Then, when the displayed cooking conditions are appropriate, a start operation is performed. Then, cooking is executed according to the cooking conditions stored in the second storage means.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1 and FIG. 2, reference numeral 11 is a main body of a microwave oven, and a door 12 is pivotally supported on the front surface so as to be openable and closable, and an operation panel (operation unit) 13 is provided. A heating chamber (not shown) is arranged in the main body 11 corresponding to the door 12, and high frequency radio waves are supplied to the heating chamber from a magnetron (not shown) which is a high frequency generator. .

The operation panel 13 is provided with a display unit 14 at the upper part, and an operation knob 15 for setting cooking conditions and a key switch group 16 for inputting cooking conditions from the middle part to the lower part. A predetermined key switch of the key switch group 16 corresponds to two kinds of cooking conditions. For example, the key switch "range strong / weak" at the top is the first
Cooking condition "strong range" and second cooking condition "weak range"
The key switch “Oven / Grill” corresponds to the first cooking condition “Oven” and the second cooking condition “Grill”. In this case, of the two types of cooking conditions corresponding to one key switch, the one that is used more frequently is the first cooking condition, and the one that is less frequently used is the second cooking condition, and the first cooking condition is used. Cooking conditions are on the upper left side of the key switch surface,
The second cooking condition is written on the lower right side of the key switch surface.

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

Next, the operation of the above structure will be described with reference to FIG.

First, various kinds of cooking conditions corresponding to each key switch of the key switch group 16 are stored in advance in a ROM (read only memory) as a first storage means of the microcomputer 18.

When the key switch "strong / weak range" of the key switch group 16 is first pressed, the cooking conditions "strong range" and "weak range" are read out. At this time,
By pressing the key switch "range strong / weak" for the first time, the cooking condition "range strong" with the higher frequency of use is selected, which is the first RAM (random access memory) of the microcomputer 18. It is stored in the first area that functions as one storage unit. At the same time, the contents of the first time area (“strong range”) are displayed on the display unit 14.

Next, use the operating knob 15 to set cooking conditions such as cooking time "10".
If "minute" is set, it is the cooking condition "strong range" above.
It is also stored in the first area of the RAM. And 1
The contents of the second area (“strong range” and “10 minutes”) are RA
It is taken in (stored) in the cooking execution area as the second storage means of M and displayed on the display unit 14.

After that, when the same key switch "range strong / weak" is pressed, the cooking conditions "range strong" and "range weak" are read again. At this time, the key switch "range strong / weak" is read.
By pressing the "weak" for the second time, the less frequently used cooking condition "range weak" is selected and stored in the second area which functions as the first storage means of the RAM. The contents of the second area (“range weak”) are displayed on the display unit 14. Further, when the cooking time “20 minutes” is set by the operation knob 15, it is stored in the RAM together with the above cooking condition “range weak”. It is stored in the second area, and the contents of the second area (“range weak” and “20
The minute ") is taken into the cooking execution area of the RAM (updated and stored) and displayed on the display unit 14.

After that, if the key switch "range strong / weak" is pressed an odd number of times (3rd, 5th, ...), the contents of the 1st area ("range strong" and "10 minutes") will be stored in the cooking execution area. It is taken in (updated and stored) and displayed on the display unit 14. At this time, when the operation knob 15 is operated, the cooking time “10 minutes” stored in the first-time area and the cooking execution area is updated. In addition, the key switch "range strong / weak" is pressed evenly (4th, 6th,
..), the contents of the second area (“range weak” 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 time "20 minutes" stored in the second time area and the cooking execution area is updated.

In this way, when the key switch "cooking start" is pressed in a state where the cooking conditions have been input and set, cooking is executed based on the cooking conditions taken into the cooking execution area at that time. That is, if the cooking conditions "strong range" and "10 minutes" are taken in, the magnetron oscillates at a high output and is executed for 10 minutes. If the cooking conditions "weak range" and "20 minutes" are taken in, the magnetron oscillates at a low output and is executed for 20 minutes.

Thus, by associating two kinds of cooking conditions with one key switch, it is possible to greatly reduce the number of key switches as a whole. Therefore, the area of each key switch can be increased, and the operation becomes easy.
For example, it is possible to prevent inconvenience such as accidentally pressing the adjacent key switch. Further, since there are few key switches, the scan signal output to the key matrix circuit 17 and the key signal reception from the key matrix circuit 17 can be sufficiently covered by the limited input / output ports of the microcomputer 18, and thus, as in the conventional case. There is no need to use a decoder, and the control circuit can be simplified. As a result, the cost can be reduced. Actually, as shown in FIG. 3, the input port P31 is in the unused state, and the input port P31 can be effectively used for other functions.

On the other hand, a conductive pattern for the key matrix circuit 17 is arranged on the operation panel 11, but since the number of key switches is not large, it is possible to secure a sufficient margin for the conductive pattern. In other words, set the conductive pattern on the operation panel 11
Can be placed sufficiently away from the end of the. That is, even if static electricity is discharged, it is possible to prevent noise due to the static electricity from flowing into the conductive pattern and further to the microcomputer 18, and it is possible to always perform stable cooking without malfunction. Therefore, the reliability can be improved.

In the above embodiment, the number of key switches is not limited and can be set appropriately according to the situation. Besides, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.

[Effects of the Invention] As described above, according to the present invention, the first storage means that stores a plurality of cooking conditions, the key provided on the operation unit, and this key are continuously pressed multiple times. First means for reading out the first cooking condition out of the cooking conditions stored in the first storage means for each odd number of pressing operations and updating and storing it in the second storage means for cooking execution And when the key is continuously pressed a plurality of times, the second cooking condition among the cooking conditions stored in the first storage means is read for each even pressing operation. Second means for updating and storing in the storing means, means for displaying the cooking condition updated and stored in the second storing means for each pressing operation of the key, and the second storing means in response to a start operation. Means for performing cooking according to the cooking conditions stored in Because of this, it is possible to easily operate the cooking condition input, simplify the control circuit and reduce the cost, and further prevent noise from flowing from the operation part to prevent malfunction. Can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a 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 of a control circuit in the same embodiment. 4 is a flow chart for explaining the operation of the embodiment, FIG. 5 is a view showing the configuration of an operation panel in a conventional microwave oven, and FIG. 6 is a control in the conventional microwave oven. It is a figure which shows the structure of a circuit. 13 …… Operation panel (operation part), 16 …… Key switch group,
17 …… Key matrix circuit, 18 …… Microcomputer (main control unit).

Claims (2)

[Claims] 1. A first storage means for storing a plurality of cooking conditions, a key provided on an operating portion, and a key for each odd number of pressing operations when the key is continuously pressed a plurality of times. 1
Means for reading out the first cooking condition from the cooking conditions stored in the memory means for updating and storing it in the second memory means for cooking, and pressing the key a plurality of times continuously. The second cooking condition among the cooking conditions stored in the first storage means is read out every time the pressing operation is performed, and the second cooking condition is updated and stored in the second storage means.
Means, means for displaying cooking conditions stored in the second storage means, and means for executing cooking according to the cooking conditions stored in the second storage means when a start operation is performed. A cooking device comprising: 2. The cooker according to claim 1, wherein the first cooking condition is used more frequently than the second cooking condition.