JPS59215519A - Cooking utensil - Google Patents

Abstract

PURPOSE:To improve the operational ability for a user by a method wherein the condition of a matter to be cooked is detected exactly with a weight sensor and a pattern recoginzing sensor, then the heating condition is present according to the detection. CONSTITUTION:A rotary disc 11 is provided with a rotary shelf plate, that is, a turn table 12 for placing a matter to be cooked in freely attachable and detachable manner. A weight sensor 18 is detachably attached on the back surface of a plate body 16. An opening 19 is formed on nearly central part of the ceiling surface of a heating chamber 10. A pattern recognizing sensor 21 is arranged on the back side of the ceiling surface opposite to the opening 19 with interposing an optical lens 20. When the condition of a food and the heating condition are displayed on a display tube 4, a user judges the finishing of cooking preparation, makes a start key ON. Then a main control part 32 trigers and controls a triac 33 according to the decided heating condition, the heating control is started. Therefore, the optimum heating condition can be decided without inputting of the kind of food by the user, accordingly, the user operation can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a cooking appliance equipped with a weight sensor and a shape recognition sensor.

[Technical background of the invention and its problems]

Conventionally, a cooking device such as a microwave oven is equipped with an M quantity sensor, sets heating conditions according to the weight of the food to be cooked detected by this M fAl sensor, and performs heating control according to the heating conditions. be. However, in such a microwave oven, it is difficult to achieve optimal cooking based only on the weight of the food to be cooked.To deal with this, a key for setting the type of food to be cooked is provided on the operation panel, and the key to set the type of food to be cooked is used to control the execution of cooking. When cooking, ask the user to set the type of food to be cooked in advance,
It is common practice to set heating conditions according to the type to be set and the if to be detected.

Furthermore, some microwave ovens are equipped with a shape recognition sensor, set heating conditions according to the shape or size of the food detected by the shape recognition sensor, and perform heating control according to the heating conditions. be. However, even in such a microwave oven, it is difficult to achieve optimal cooking depending on the shape of the food to be cooked.To deal with this, a key for setting the type of food to be cooked is provided in the operation control key, which makes it easier to cook. Before execution, ask the user to set the type of food to be cooked in advance,
Heating conditions are set depending on the type to be set and the shape to be detected.

However, in these microwave ovens, the space on the operation panel is limited, and it is preferable in terms of operability and visibility to provide keys corresponding to all the fffl types of food to be cooked in this limited space. isn't it. That is, as the shape of each key becomes smaller, there is a risk of erroneous operation, and it takes time to find a desired key from among a large number of keys. Therefore, there is a method of providing keys corresponding to typical types of food to be cooked, and setting other types by inputting codes written in the cookbook using a numeric keypad or the like. However, in this case, it takes time to find the code from the cookbook, and moreover, using the cookbook is troublesome, and problems remain in terms of operability.

[Purpose of the invention]

This invention was made in view of the above circumstances,
The purpose is to provide a cooker with excellent operability that allows setting the optimum heating conditions for the food to be cooked with extremely simple operation.

[Summary of the invention]

This invention is provided with an N amount sensor and a shape recognition sensor, and uses information from these sensors to accurately detect the state of the object to be cooked and set heating conditions, thereby reducing the user's operations. It is something.

[Embodiments of the invention]

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

In FIGS. 1, 2, and 3, reference numeral 1 denotes the main body of a cooking appliance, such as a microwave oven, on the front of which a door 2 is pivotally supported so as to be freely openable and closable, and an operating channel 3 is provided. The operation panel 3 is provided with a display section such as a fluorescent display tube 4, a shape recognition key 5, an M amount detection key 6, a clear key 7, a start key 8, and the like.

A heating chamber 10 is arranged in the main body 1 corresponding to the door 2,
A rotating disk 1 is provided at the bottom of the heating chamber 10. A rotary shelf plate, so-called turntable 12, for placing food to be cooked on the rotary disk 11 is detachably set. The rotating disk 1 has a shaft 11a on the back side, and this shaft 11a is rotatable in the center of the bottom surface.
The shaft 13a of the RT motor 13 passes through the shaft 13a of the RT motor 13.
connected to. In this case, a shaft insertion hole is formed in the shaft 11a, and the shaft 13a is connected by fitting into the shaft insertion hole. Note that a spring 14 and a metal plate 15 receiving the biasing force thereof are provided at the deep bottom of the shaft insertion hole, and the rotating body 1 is supported by the shaft 13a via the spring 14 and metal plate 15. . Thus, a step is formed in the middle of the shaft 11a, and one end of the elastic plate 16 comes into contact with the step, and the other end of the plate 16 is connected to the weight sensor control section 17. A weight sensor 18 is attached to the back surface of the plate 16. Therefore, when the rotary disk 1 moves downward due to the weight of the food to be cooked, the plate 16
is curved in the direction of the arrow in the figure, causing strain in the resistance element of the weight sensor, and this strain is captured as the weight of the food to be cooked.

On the other hand, an opening 19 is formed in the ceiling surface of the heating chamber 10, and a shape recognition sensor such as a COD (charge coupled device) sensor 21 is arranged on the back side of the ceiling surface corresponding to the opening 19 with an optical lens 20 in between. will be established. The COD sensor 2 is driven by a CCD drive circuit 22. Further, a high frequency generator such as a magnetron 23 is disposed on the back side of the side wall of the heating chamber 10, and an antenna 23a of the magnetron 23 is introduced into the heating chamber 10. Furthermore, a light introduction hole 24 is provided on the side wall of the heating chamber 10.
is formed, and a lamp 25 is disposed on the back side of the side wall corresponding to the light introduction hole 24.

Reference numeral 30 denotes an AC power source, to which the main control unit 32 is connected via a transformer 3 and the magnetron 23 is connected via a triac 33 and a high voltage transformer 34. The main control section 32 consists of a microcomputer and its peripheral circuits, and includes the fluorescent display tube 4, a key group 35 consisting of various keys on the operation panel 3, a weight sensor 18, a CCD sensor circuit 22, and a trigger terminal of a triac 33. etc. are connected.

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

First, only the cooking container is placed on the turntable 12, and the weight detection key 6 is turned on. Then, the main control unit 32 receives the output signal of the weight sensor 18, detects the weight of the cooking container, stores it in a memory (not shown), and displays it on the display tube 4. When the clear key 7 is turned on, the main control section 32 changes the weight displayed on the display tube to ''.
Set it to 0”.

In this state, food is put into the cooking container and the cooking container is placed on the turntable 12 again.

Then, the door 2 is closed, and the shape recognition key 5 and weight detection key 6 are turned on. Then, the main control section 32 gives a command to the CCD sensor circuit 22 to drive the CCD sensor 21. The CCD sensor 2 outputs an image signal corresponding to the shape of the food by scanning the light receiving surface. The main control unit 32 includes a CCD sensor 2
The shape of the food is recognized according to the image signal output from the. At the same time, the main control unit 32 also controls the weight sensor 1.
The total weight of the food and the cooking container is detected by inputting the output signal of 8, and the content of the memory (the weight of only the cooking container) is subtracted from the total M view to obtain the weight of the food. Then, the main control unit 32 determines the state of the food, for example, weight 2 volume, according to the recognized shape of the food and the calculated weight of the food.

It detects specific gravity, etc., and depending on the detection results, determines heating conditions such as cooking time, power level, and temperature at which the food is finished. At this time, the detected food condition and heating conditions are displayed on the display tube 4.

When the state of the food and the heating conditions are displayed on the display tube 4, the user determines that preparation for cooking is complete and turns on the start key 8. When the start key 8 is turned on, the main controller 32 starts the triac 33 according to the determined heating conditions.
trigger control and start heating control.

In this way, the weight sensor 18 is provided to detect the weight of the food, and the CCD sensor 21 is further provided to recognize the shape of the food, and the condition of the food is detected based on the weight and shape. In other words, since it is possible to accurately detect the condition of the food, the optimum heating conditions can be determined even if the user cannot input the type of food. Therefore, the user's operations can be reduced,
Desired cooking can always be done simply and reliably.

In addition, in the above embodiment, application to a microwave oven that enables only microwave cooking using high frequency waves was described, but the same applies to a microwave oven that is equipped with a heater in the heating chamber and enables open cooking using the heat generated by the heater. can be implemented.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to provide a cooker with excellent operability that allows setting the optimum heating conditions for the food to be cooked with extremely simple operations.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an external view, FIG. 2 is a schematic diagram of the internal mechanism and control circuit, and FIG. 3 is a configuration specifically showing the main parts of FIG. 2. 4 are flowcharts showing the operating procedure and control based thereon. 4... Fluorescent display tube (display part), 5... Shape recognition key, 6... M amount detection key, 7... Clear key, 8...
Start key, 18...1■Keisenza, 2no...C
CD sensor type recognition sensor), 32... Main control unit. Applicant's agent Patent attorney Takehiko Suzue Figure 3 Figure 4

Claims (1)

[Claims] (1) A weight sensor that detects the weight of the object to be cooked, a shape recognition sensor that recognizes the shape of the object, and a state of the object that is detected by information from these sensors. , and a control section that performs heating control using heating conditions according to the detection result. (2. The cooking device according to claim 1, characterized in that it has a display section that displays the state of the object to be cooked detected by the control section and the heating conditions corresponding thereto. (3. ) The weight sensor receives the weight of the food to be cooked through a vertically movable shelf board on which the food to be cooked is placed and a plate body that abuts on the support shaft of this shelf board. A cooker according to scope 1 or 2.