JPS63318427A - Cooker - Google Patents

Abstract

PURPOSE:To improve operability of zero point regulation, by a method wherein a cooker is provided with a putting discriminating means, detecting whether a putting disc is put on a weight sensor, and an informing means informing operating information. CONSTITUTION:A shaft 10 is descended and a discriminating switch 24 is put ON by putting a rotary dish 7 and a putting disc 8. When a zero point regulating key is operated by mistake without putting the rotary dish 7 and a putting disc 8 upon regulating zero point, the shaft 10 does not descend, therefore, the discriminating switch 24 is left opened. In this case, any signal is not outputted, therefore, a micro-computer 29 judges that the rotary dish 7 and the putting disc 8 are not being put on. In addition to such open circuit, operating information to promote regular operation is indicated by the microcomputer 29 through a fluorescent indicating tube 5 upon the faulty operation of the zero point regulating key.

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention detects the weight of the food to be cooked using a weight sensor, and controls the heating time, etc. according to the detected weight. , relates to a cooker that optimally automatically cooks food.

(Conventional technology) In recent years, microwave ovens (cooking devices) have improved operability by measuring the weight of the food being cooked and automatically setting the optimal heating time according to the weight. It is becoming more and more popular.

A structure is used in which the two are installed and removably connected.

By the way, before using this microwave oven, the user operates the operation unit to memorize the position of the rotating plate and the mounting plate (both accessories are accessories and corresponds to the mounting device) in the memory of the main unit. The so-called roI:1 adjustment must be carried out. Then, using this memorized weight as og, the weight of the food (a physical object) is measured, and the optimal heating time is selected based on this.Specifically, before use,
Place the rotary plate, u, and placing plate on the sensor, store their weight in the memory of the weight sensor, and calculate "0 point x 1 mJ".
By doing this and then placing the food on the rotating plate,
The food is measured for one day based on the memorized positioning.

By the way, this type of "○ point adjustment" operation has the disadvantage that it cannot be performed successfully unless one understands what kind of procedure is required.

(Problem to be Solved by the Invention) Therefore, if the user does not know the procedure, the user has the inconvenience of having to refer to the instruction manual each time, and the operation is likely to be incorrect. Moreover, even if a user makes a mistake in operation, the user will be confused if they do not know what is wrong and how to deal with it, and the operability cannot be said to be good.

This invention was made with attention to such problems, and therefore, its purpose is to provide a cooking appliance that can improve the operability of the "0-point UA section".

[Structure of the invention] (Means and effects for solving the problem) This cooker has the following features:
The weight sensor 9 detects whether the mounting device 7°8 is placed 1 m or not 4! ! The area determining means 24, the notifying means 5 for notifying operation information, and the notifying means 5 transmitting information prompting the placing of the placing devices 7 and 8 at the time of the memory operation for superimposing the placing devices 7 and 8. 3111 Whether to notify the user and also to notify the user from the notification device 5 of information urging normal operation when the placement determination device 24 detects that the placement device is not placed and the storage operation is performed.
A section 29 is provided to suggest the user how to perform the operation, and to suggest the correct operation if the user performs an incorrect operation.

(Embodiment) The present invention will be explained below based on an embodiment shown in FIGS. 1 to 7. FIG. 2 shows the external appearance of a microwave oven (cooking device) to which the present invention is applied, in which 1 is a main body consisting of a cabinet, 2 is a heating chamber disposed within the main body 1,
3 is a side-opening door rotatably supported on the front side of the main body 1 (for opening and closing the heating chamber 2); 4 is an operation provided on the front side of the main body 1 adjacent to the door 3; It is a panel. The upper part of the operation panel 4 is equipped with a display section, for example, a fluorescent display tube 5 (corresponding to a notification means) for displaying a dot matrix display, and the middle part is equipped with operation keys for performing various types of cooking, including automatic cooking. 6a... and an O point adjustment key 6b (corresponding to the operating section) for operating the "0 point 1m section" 6ctfi stage t keyboard is blank.

As shown in FIGS. 1 and 3 above the bottom 12a of the heating chamber 2 of such a microwave oven, a rotary 11117 is arranged together with the attached fiM plate 8 (both of which constitute a mounting device). Weight sensor 9 on the lower side of the bottom wall 2a
is provided. The center of the back surface of the mounting plate 8 is removably engaged with the end of the shaft 10 incorporated in the weight sensor 9, which penetrates from the bottom wall 2a to the inside. It is supported so that it can move in the direction.

Here, regarding the stacked sensor 9, as shown in FIG. 3, a box-shaped mounting plate 11 (including a bottom cover 11b) is attached to the lower surface of the bottom wall 2a together with a cover 11a. Inside this, there are two upper and lower leaf springs 12a, 1.
2b is provided, and a motor 14 for driving a rotary plate (with a cylindrical radial bearing The shaft 10 is supported movably in the axial direction). For more information, please contact wII2! ! Two opposing upper and lower leaf springs 12a, 12b
The left end of is fixed to the left side of the mounting plate 11 via the fixing piece 15 (by screwing or the like). The remaining leaf spring 1
A movable piece 16 is provided between the right end portions of 2a and 12b. A motor 14 is attached to the movable piece 16 which becomes the free end.
is supported. For example, by protruding a member such as the motor mounting plate 17 directly below the motor 14 on the movable piece 16,
Supports the entire motor. The lower end of the shaft 10 is formed into a substantially arc shape, and around the upper shaft of the motor 14 is a vessel-shaped water receiving plate for receiving water entering from inside the refrigerator and guiding it to the outside of the weight sensor 9. 14a is attached.

A fixed side sensor plate 19a is horizontally attached to the lower end of the fixed piece 15 using an L-shaped sensor mounting plate 18, and a movable side sensor plate 19a parallel to the fixed side sensor plate 19a is attached to the lower end of the movable piece 16. Sensor plate 19b is similarly attached using sensor mounting plate 18, and both sensor plates 1
A required gap is formed between 9a and 19b. Note that an insulating material 20 is interposed between the sensor mounting plate 18 and each fixing piece 15, 16. And each sensor temporary 19a
, 19b is an oscillator 21 fixed to the outer surface of the mounting plate 11.
(consisting of a printed circuit board and electronic components mounted on the board), and has a structure in which the oscillation frequency of the oscillation circuit changes by applying a load.

In other words, when vJffi is applied to the shaft 10, the movable sensor plate 19b descends and the gap with the fixed sensor 19a increases, and at that time, the oscillation frequency changes due to the changing capacitance. With this, a signal corresponding to the weight is output.

On the other hand, between the rear end of the shaft 10 and the motor mounting plate 17, an elastic band-shaped bearing plate 22, for example, is interposed as shown in FIG.

Specifically, the bearing plate 22 has a substantially crank shape. A plate surface portion at one end of the bearing plate 22 is fixed to the tip side of a protrusion 23 provided on the motor mounting plate portion near the rear end of the shaft 10. Also, the bent part at the other end that is floating is the shaft 10.
The motor mounting plate 17 extends laterally through the rear end.
The arcuate portion 10a at the end of the shaft is received at a point slightly separated from the shaft, and the entire shaft is arranged to be movable up and down. The bearing plate 22 is attached to the rotating plate 7 on the shaft 10. As shown in FIG. 5, in response to the placement of the placement plate 8, the structure is such that it is displaced downward using the fixed portion (protrusion 23) as a fulcrum. The motor mounting plate 17 corresponds to the extended end 22a of the bearing plate 22.
A discrimination switch 24 (corresponding to placement discrimination means), which is made of, for example, a normally open microswitch, is installed at a position U, and is closed when the rotary plate 7 and the placement plate 8 are placed on the shaft 10. That's what I do. In other words, from the opening/closing of the discrimination switch 24, the weight sensor 9 detects that the rotary plate 7.1tl! Place plate 8
It is designed to detect whether or not it is placed. Of course, the bearing plate 22 is a leaf spring 12a.

It is set to have weaker elasticity than 12b, and is designed to move away from the discrimination switch 24 when there is no load (when the rotary plate 7 is not placed on the plate 8 at #y) (to prevent the switch from operating). ).

On the other hand, as shown in FIG. 1, a magnetron 25 is installed in the heating chamber 2. Note that the magnetron 25 is connected in series to a power source 28 via a high voltage transformer 26 and a relay contact 27 installed in a space within the main body adjacent to the heating v2. The relay contact 27 is connected to the microcomputer 29 (t) together with the fluorescent display tube 5 of the operation panel 4.
(corresponding to the ilJII section). Further, to the input side of the microcomputer 29, the above-mentioned oscillator 211 discrimination switch is connected together with the keyboard 6C.

Then, in the microcomputer 29, after inserting the plug into an outlet (not shown), when the judgment switch 24 is opened and the circuit is closed, "0 point adjustment" is performed.
is determined to be possible, and by the subsequent operation of the O point adjustment key 6b, the double-open rotating plate 7 excavated from the oscillator 21 is opened.
and the weight of the mounting plate 8) are detected and stored in storage units (not shown) built into two microcomputers.

On the other hand, if the judgment switch 24 becomes open and the circuit becomes open, it is judged that the "0 point adjustment" is not suitable, including the erroneous operation of the O point adjustment key 6b, even if the signal is output from the oscillator 21. I try not to remember it.

In addition, the microcomputer 29 sets, as an initial setting, the power supply FAON <Plug Insertion> and the initial operation of the O-point adjustment, such as placing the rotary plate 71 on the rotary plate 8 and guiding water entry, as shown in FIG. 7(a), for example. Pictures and characters such as these are displayed from the fluorescent display tube 5. In other words, when performing a memory operation, the rotary plate 7. He is encouraged to place the placement plate 8. In addition, when the microcomputer 29 performs an erroneous operation of the O-point adjustment key 6b (when the rotary plate 7 is pressed even though it is at a stop without the plate 8), the microcomputer 29 displays a message prompting for normal operation, such as the 7 Display characters as shown in Figure (b) on the fluorescent display tube 5.
or complete O point adjustment (due to normal operation)
7 (C).
) are displayed from the fluorescent display tube 5, and even if the user does not know how to operate the O point adjustment, the user can operate the O point adjustment accurately by being informed of the operation information.

Of course, after the "O-point adjustment" has been performed correctly, the microcomputer 29 can store the food (cooked food) placed on the rotary plate 7 in the previous memory, as described in the "prior art" section. It recognizes the formed mold as 0 points, sets the optimum heating time according to the importance, and controls the conduction of the relay contact 27 (automatic cooking).

Next, the operation of the microwave oven configured as described above will be explained based on the flowchart shown in FIG.

First, insert the plug into the power supply 28 and turn on the power to the main body of the microwave oven. With this voltage AON, the fluorescent display tube 5
The rotating plate 7 and I! as shown in FIG. 7(a) are displayed on the screen. Operation information for guiding the placement of the placement plate is displayed. Seeing this display, the user can
will be placed on the shaft 10.

Then, the shaft 10 becomes the rotary plate 7. Due to the shape of the mounting plate 8, the bearing plate 22, which was initially separated from the motor mounting plate 18 as shown in FIG.
is pressed by the circular arc portion 10a and comes into contact with the motor mounting plate 17. In other words, the bearing plate 22 is displaced downward by a gear distance using the fixed part as a fulcrum, and the determination switch 24 is opened (ON>) at the end 22a.As a result, the circuit of the determination switch 24 is turned on. The circuit becomes open, and a necessary signal indicating that the rotary plate 7. M8 is placed is generated.
For example, a voltage of 5V is applied. Then, the microcomputer 29 determines this, and a state is reached in which "zero point adjustment" is possible.

After that, by operating the 0 point key 6b, the oscillator 21
The microcomputer 29 detects the weight ω of the rotary plate 7 and the mounting plate 8 from the signal output from the microcomputer 29, and a signal corresponding to the weight value is memorized (stored) in the storage section of the microcomputer 29. go.

As a result, the "0 point al1 section" is performed, and at the same time, the information shown in FIG. 7(C) informing that the "O point adjustment" has been completed is displayed on the fluorescent display tube 5.

On the other hand, during such "zero point adjustment", the rotary plate 7 and the [f plate 8
If the O-point adjustment key 6b is operated by mistake without setting the 0-point adjustment key 6b, the judgment switch 24 will remain open because the shaft 10 will not descend. In other words, it remains an open circuit, so
No signal is output.

As a result, the microcomputer 29
Rotating plate 7 and i! It is determined that the mounting plate is not placed. In addition to this open circuit, the O point adjustment key 6b
As a result of the erroneous operation, the microcomputer 29 starts displaying operation information from the fluorescent display tube 5 as shown in FIG.

In other words, the user is informed of the erroneous O-point adjustment and asked to correct it immediately.

Of course, the weight is not stored in the microcomputer 29 until the normal "O point adjustment" is performed.

Therefore, by suggesting the operating method for "zero point adjustment" through the display and also suggesting the operating method to deal with erroneous operations, "zero point adjustment" can be performed easily and without error. Moreover, it also informed that the operation of 0 point 111J was completed, so ``0 point adjustment'' was easy to understand.

After the "0 point adjustment" has been successfully performed, if you place the food on the rotary plate 7 and operate the operation key 68, the weight of the food will be measured using the adjusted 0 point and automatic cooking will start. It will be done. Specifically, as the food is placed, the motor mounting plate 17 that comes into contact with the bearing plate 22 moves down together with the shaft 10. As a result, the movable piece 16 descends together with the movable sensor plate 19b, and the gap between it and the fixed sensor plate 19a increases. Then, the capacitance that changes in this gap is output as a change in excavation frequency by the oscillator 21, and the microcomputer 29 detects the weight of the food based on the previous zero point, and optimally heats the food according to the weight. Set the time and operate the relay contact 27. In other words,
The generation of high voltage in the high voltage transformer 26 drives the magnetron 25 to oscillate, and the food is heated and cooked using microwaves.

In the above-mentioned embodiment, text information is displayed to prompt normal operation, but as shown in FIG. 8, the fluorescent display tube 5
The last digit of the four-digit digital display 30 (which clearly indicates heating time, weight, output, etc.) set to In addition to the digital display section 30, "range", "strength",
The character display section 31 that clearly indicates "rotating plate" and "heavy (to)" is set, and the respective parts of "rotating plate" and "juryo" are blinked together with the rEJ display, for example, to ensure normal operation. You may also encourage this. Also, “O point rAIlij
Completion of J is not text information, but "0" indicating "Complete" is displayed in the last digit of the digital display section 30 as shown in FIG.
” may be displayed.

Of course, notifications including these displays are not limited to image displays (visually), but may also include sounding a buzzer or giving instructions by voice (both are auditory).

Further, in one embodiment, a normally open type microswitch is used as the discrimination switch, but a normally closed type microswitch may also be used. These switches do not wear out the contacts due to minute movements during cooking, so they have a long lifespan.
It is highly reliable and provides the effect of always ensuring reliable "zero adjustment".

[Effects of the invention] As explained above, according to this invention, the
Suggestions on how to operate the ``Chosenbushi'' and ``Suggestions for dealing with incorrect operations''.
By suggesting how to operate the 0-adjustment section, it becomes possible to perform the 0-adjustment section easily and without error.

Therefore, the operability of the UO pointer j can be improved.

[Brief explanation of drawings]

FIGS. 1 to 7 show one embodiment of the present invention.
The figure is a configuration diagram showing the placement determination means and the notification means together with the heating chamber, FIG. 2 is a perspective view showing the external appearance of the cooker, and FIG.
The figure is a sectional view showing the area around the weight sensor, Figures 4 and 5.
The figure is an enlarged cross-sectional view showing the operating state of the discrimination switch, Figure 6 is a flowchart showing the operation transition of the "O adjustment section", and Figures 7 (a) to (C) are different from each other. Figures 8 to 1 showing operation information are diagrams showing operation information in a different display format. 2... Heating chamber, 5... Fluorescent display tube (notification means), 6
b...○ adjustment key (operation unit), 7.8... rotating plate. M placement board ([purchased equipment]), 9... weight sensor, 10...
Axis, 24...Discrimination switch (placement discrimination means), 29.
...Microcomputer (control unit). Applicant's representative Patent attorney Takehiko Suzue Figure 4 Figure 5 Figure 6 (a) Figure 8 (b) (c) Figure 7 Figure 9 Figure 10

Claims (2)

[Claims] (1) A mounting device on which food is placed, a weight sensor that removably receives this mounting device and detects the weight of the food on the mounting device, and a weight sensor that stores the weight of the food mounting device in advance. an operation unit for storing the weight in the unit, and measuring the weight of the food by setting the stored weight as the zero point of the weight sensor;
In a cooking device that performs cooking according to the weight, a placement determination means detects whether or not a placement device is placed on the weight sensor, a notification device reports operation information, and the weight At the time of the memory operation, the notification means notifies information prompting the placement of the placement device, and when the placement determination device detects that the placement device is not placed and the memory operation is performed, the notification device issues a message indicating that the placement device is normal. What is claimed is: 1. A cooking appliance characterized by comprising: a control section that notifies information prompting operations. (2) The cooking appliance according to claim 1, wherein the control unit notifies the notification means when the storage operation is completed in a normal operation.