JPS5864429A - Heat cooking utensil - Google Patents

Abstract

PURPOSE:To reduce the number of parts as well as make the weight measurement of an object to be heated easier without the use of a dish for a balance by a method in which a fixed leg is provided on one side of the bottom of a heater body and also a weitht detecting leg with a weight detecting function is provided on the other side of the bottom. CONSTITUTION:A fixed leg 15 having rubber legs 14 on its front and rear sides is provided on one side of the bottom 13 of a heater body 1, and also a weight detecting leg 16 to detect the weight of the heater body 1 is provided on the other side of the bottom. The weight detecting leg 16 consists of two plate springs 17 and 18 deformable by loads, fixing metals 19 and 20 supporting and fixing the plate springs 17 and 18 in almost parallel, and a rubber leg 21. On the upside of the plate spring 18, a weight detecting element 22 whose electric resistance is varied with the deforming amounts of the plate spring 18 is provided. By electrically fetching out the variations in the electric resistance of the element 22, the weight of an object 5 to be heated on the heater body 1, preferably a cooking dish 10, is measured.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooking device equipped with a function of measuring the weight of an object to be heated.

Conventionally, the heating time of a heating cooker is generally determined by the weight of the object to be heated. Therefore, when setting the heating time, it is necessary to measure the weight.

However, conventional weighing methods use a separate scale to measure weight. This makes it difficult to find a place to put the scale, and it takes time to find and remove the scale each time you want to take a measurement.
It was inconvenient.

Therefore, a heating cooker 2, for example, a microwave oven having a built-in scale has been proposed. An example of this is shown in FIG.

In this example, a scale mounting plate 3 is installed on the top surface 2 of the main body 1, an object to be heated is placed on the mounting plate 3, and its weight is displayed on the display section 4. However, with this configuration, you cannot place other items on the top of the main unit, it is close to the kitchen ceiling or hanging shelves, and the installation position is high, so
It had the disadvantage that it was difficult to reach and was not easy to use.

In addition to the above-mentioned structure, heating cookers having a structure incorporating various scale functions have been proposed, but as in the above-mentioned example, a protrusion is formed and 7? :v1 It had many drawbacks in practical terms, such as a complicated structure.

The present invention aims to eliminate the above-mentioned conventional drawbacks.

In order to achieve the above object, the present invention includes a heating chamber for accommodating an object to be heated, a heating means for heating the inside of the heating chamber, a fixed leg fixed to the main body provided on one side of the bottom part of the main body, and the like. The weight sensor is equipped with a weight sensor having a weight detection function provided on the side, and the weight sensor is configured to include an elastic body that deforms under load and a weight detection element provided on the elastic body, making it easy to use. It provides cooking utensils.

An embodiment of the present invention will be described below based on the drawings.

In FIG. 2, the high-frequency heating device has an object to be heated 5 inside the main body 1.
The heating chamber 6 is provided with a heating chamber 6 for storing the heating chamber 6, and a door 8 which can be opened and closed is provided at the front opening 7 of the heating chamber 6.

Also, a cooking plate 1 on which the object to be heated 5 is placed on the bottom surface 9 of the heating chamber 6.
0 is set. On the operation panel 11 on the front of the main body 1, there is a display section 4 that displays 2 cooking times, 60 weights of objects to be heated, etc.
and a keyboard 12 for inputting various signals.

A fixed leg 15 having one rubber leg 14 at the front and back for supporting the main body 1 is provided on one side of the bottom surface 13 of the main body 1, and the weight of the main body 1 is detected approximately at the center of the other side. A weight detection function 16 is provided.

As shown in FIG. 3, this weight detection 16 consists of two leaf springs A1 and B18, which are so-called elastic bodies that deform under load, and a fixing fitting A19 that supports and fixes the leaf springs 17 and 1B almost parallel to each other. and B20, rubber legs 21, and an external cover (not shown), and a fixing fitting A19 is fixed to the bottom surface 13 of the main body 1. On the upper surface of the leaf spring 18, a weight detection element 22 whose electrical resistance changes when it senses deformation of the leaf spring 18, for example, is provided.

The weight of the main body 10 is applied to the fixed legs 15 and the weight detector 16. Leaf spring 17 of weight detection-16 provided on the - side.
j8 is an elastic body and bends and deforms in proportion to the weight of the product according to Hooke's law.

The weight of the main body increases when the object to be heated 6 is housed, but the weight detection element 22 detects the amount of deflection that occurs in the leaf spring 18 due to this weight increase, and electrically extracts this change in electrical resistance value. Weigh 60 items.

The operating principle of the weight detection element 22 will be explained in FIG. Fourth
In the figure, the main body weight of the high-frequency heating device is assumed to be W9. The main body weight Wit, the fixed leg 15 has Wlg, weight detection -
16 is loaded with the weight of W29, respectively.

The balance of forces is 5w=w10w2. Further, if the weight of the object to be heated 50 is Fg, it is similarly distributed to the fixed leg 15 and the weight detection 16, and F, 9, 22, respectively.
A weight of g is loaded.

That is, F=F1+F2. The object to be heated 5 is placed in the heating chamber 6
If the cooking plate 10 is placed on the cooking plate 10, (W2+F2) will be displayed on one weight detection -16, and (w1+F2) will be displayed on the other fixed leg 15.
The weight of F1) is applied. At this time, if the position where the heated object 5 is placed shifts as shown in Fig. 4, the weight applied to the weight detection 16 will change, so it is necessary in principle to accurately limit the position where it is placed. In reality, the area of the cooking plate 100 is not so large, and no matter where it is placed on the cooking plate 10, there will be little error.

Since the plate springs 17 and 18 of the weight detection-16 deform in proportion to the weight, the weight of the object to be heated 5 is distributed between the fixed leg 15 and the weight detection-16 in advance, and the weight detection-16 is If the relationship between the weight F2 of the object to be heated 6 and the amount of change in the electrical resistance value of the weight detection element 22 attached to the plate spring 18 is calculated in advance, the weight F of the object to be heated 5 can be calculated in advance.
Even if you do not know, the amount of change in the electrical resistance value indicates that the object to be heated 5
0 weight F can be calculated.

Next, the control circuit of the heating cooker will be explained based on FIG. 5.

In the figure, a high voltage transformer 26 is connected via a power fuse 23, a door switch 24 that is linked to the opening and closing of the door 8, and a relay contact 26. High voltage transformer 26 is capacitor 2
7. Connected to magnetron 29 via diode 28. Voltage is supplied to the control board 30 by a low voltage transformer 31. The control board 30 is provided with a microcomputer 32 and connected to the keyboard 12 via a converter A33'f. Converter A33 converts the signal from the keyboard 12 into a signal for the microcomputer 32. The microcomputer 32 displays the content of this signal on the display section 4. In response to a signal from the keyboard 12, the microcomputer 32 outputs an output signal according to a pre-stored program, and the output signal operates the relay coil 35 via the converter B34 to open and close the relay contact 25. The converter C36 is the weight detection element 22
Converts the signal into a signal for the microcomputer 32. The microcomputer 32 calculates the weight of the object to be heated 5 based on this signal and displays it on the display section 4.

Next, an example of operation of the heating cooker of this embodiment will be explained based on FIG. 6.

An operation panel 11 provided on the front surface of the main body 1 is provided with a keyboard 12 and a display section 4 formed of a fluorescent display tube, a liquid crystal display tube, or the like. The keyboard 12 is provided with a plurality of cooking selection keys 37 for selecting the type of cooking. When the object to be heated 6 is not stored in the heating chamber 6, the display section 409 is displayed. When the heated object 6 is housed in the heating chamber 6vC, the weight detection element 22 attached to the plate spring 18 of the weight detection leg 16 detects the weight of the heated object 50, and the weight of the heated object 6 is displayed on the display section 4. . Moreover, microcomputer 3
2 stores in advance the relationship between weight and heating time depending on the type of cooking, selects the type of cooking using the cooking selection key 37, and operates the cooking key (not shown) to start cooking. The most suitable heating time is displayed on the display section 4. Then, heating starts, and as the heating progresses, a countdown is made and the remaining 9 hours are displayed. f That is, even if the user does not set the heating time, the heating time is automatically set and automatic heating cooking is performed.

According to the above configuration, since the scale function is built into the main body 1, the dimensions of the instrument are almost the same as the conventional one. It does not require a large installation space. In addition, there are no protruding objects added to the main body, so the top surface can be used, and since it can be stored in the heating chamber 6, it can be weighed, making it difficult to reach.
It is not difficult to operate and is easy to use. Furthermore, the use of a microcomputer enables automatic cooking, which is extremely convenient.

Although this embodiment shows an example using the microcomputer 32, it may be selected as appropriate depending on the operation content, and if the control is simple, it can be configured with only an electronic circuit using general parts, and the same effect can be achieved. be able to.

Next, another embodiment of the present invention will be described based on FIG. 7.

In the figure, a high-voltage transformer 26 for applying high voltage to a magnetron 29 is provided in the main body 1, but in addition to this high-voltage transformer 26, a capacitor 27, a diode 28. Electrical components such as the magnetron 29 are arranged in a space located on the back side of the operation panel 11 on the fixed leg 16 side. By doing this, the center of gravity of the main body 1 is eccentrically moved toward the fixed leg 15 side, the weight applied to the weight detection leg 16 is minimized, and the object to be heated 6 is
By increasing the ratio of the weight F2 to the W2, more accurate detection can be achieved. Moreover, since most of 1° of the weight of the main body is supported by the fixed legs 16, stability is also good.

As described above, according to the present invention, the following effects can be obtained.

1. The weight of the object to be heated can be measured simply by storing it in the heating chamber for cooking. This eliminates the need to take out the scale and place it on the scale as in conventional methods, making it easier to use. There is no need to separately prepare a mounting plate for the device, the number of parts is small, and the configuration is simple.

2. When installing a heating cooker, it can be installed in a slightly higher place if there is no problem in putting the object to be heated into the heating chamber, so a space that is not normally used in the kitchen can be used advantageously.

3. Measuring the weight of the object to be heated with the weight detection legs installed on the bottom of the main unit is useful even when the heating chamber of an electric heating cooker or a gas-burning heating cooker reaches a high temperature. The vicinity of the weight detection element does not become high temperature, so errors due to temperature changes are less likely to occur and accurate measurements can be made.Furthermore, the structure is simplified because no temperature correction is required.

4. It may be possible to make the legs that support the weight of the main body all have an elastic structure similar to the weight detection legs having leaf springs, but in the case of this structure, the supporting state is unstable. In the present invention, since one side is a fixed leg, it is easily stabilized.

6 If the legs are all elastic as in 4 above, the weight of the object to be heated cannot be accurately measured unless a weight detection element with good sensitivity is used; however, in the present invention, the weight of the heated object is half of the main body weight. Therefore, there is no need to use an expensive and highly sensitive weight detection element, and it is highly economical.

6 Since the main unit has no protruding parts, the top of the main unit can be used as a stand for placing things, and since the scale is installed on the bottom of the main unit, there is no possibility of inadvertently leaking soy sauce, sauce, oil, etc. It also prevents the particles from adhering to each other, and therefore prevents them from degrading the accuracy of the scale.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a conventional heating cooker, Fig. 2 is a front view showing a 7In heat cooker according to an embodiment of the present invention with the door open, and Fig. 2 is an external perspective view of the same main part. , Fig. 4 is an explanatory diagram of the operating principle of the same weight detection, Fig. 5 is a control circuit diagram of the same, Fig. 6
The figure is a perspective view of the main part of the operation panel, and FIG. 7 is a partially sectional front view of a heating cooker according to another embodiment of the present invention. 1...Main body, 5...Heated object, 6...
...Heating chamber, 11, ...,,,, operation panel, 15
, , , , Fixed leg, 16 , , Weight detection leg, 17 , 18 , , Leaf spring, 22 , ,
,,Weight detection element,29,,,,,,Magnetron. Name of agent: Patent attorney Toshio Nakao and 1 other person 1A
lrI! J Figure 2 Figure 3 Figure 6

Claims (3)

[Claims] (1) A heating chamber that accommodates an object to be heated, a heating means that heats the inside of the heating chamber, a fixed leg fixed to the main body provided on one side of the bottom surface of the main body, and a weight detection function provided on the other side. 1. A heating cooking device comprising: a weight detection leg having a weight detection leg, wherein the weight detection leg has an elastic body that deforms under load, and a weight detection element provided on the elastic body. (2) The cooking device according to claim 1, wherein the center of gravity of the main body is eccentric to the fixed leg side. (3) Claim 11, which uses a weight detection element that changes the electrical resistance value as the elastic body deforms.
Heating cooker as described in section.