JPS609088A - High frequency heating device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-frequency heating device that detects the weight of an object to be heated, such as food, and automatically sets a heating time based on the detected weight value.

As is well known, the heating time in this type of high-frequency heating device is actually set using a timer based on the user's intuition and experience and cooking books. However, the heating time needs to be adjusted depending on the weight of the food.
The setting is very difficult, and it is difficult to consistently heat food to a delicious state that makes it ready to eat.

Therefore, a method of automatically setting the heating time by installing a weighing device to detect the weight of the food has been considered, but in this method, the heating time is set based on the net weight of the food. , there are those that are set based on the total weight of the food and container.

However, when heating food in a container, the heating time does not include the amount of heat taken from the food by the container in the above method, which is set based on the net weight of the food. In addition, in the method of setting the temperature based on the total weight of the food and the container, the specific heat of the container commonly used in high-frequency heating equipment is smaller than the specific heat of the food, so the heavier the container used, the more the food will heat up. It becomes too much.

Therefore, depending on the weight or heat capacity of the container used, the finished state of the object to be heated after cooking may vary significantly, which is disadvantageous in that it is inferior in usability as a heating cooker.

The present invention has been made in view of the above-mentioned circumstances, and includes means for calculating the heat capacity of a container containing an object to be heated and the net weight of the object to be heated, and the heating time is determined according to this heat capacity and net weight. The present invention aims to provide a high-frequency heating device i which sets the above-mentioned conventional drawbacks.

Hereinafter, one embodiment of the present invention will be described in detail based on the accompanying drawings.

In the figure, 1 is a heating chamber disposed in the main body 2, 3 is a mounting table rotatably supported at the bottom of the heating chamber 1, and 4 is a cover for food, etc. placed in the heating chamber 1. 5 is a high-frequency heating means for heating the object to be heated; 5 is a weight detecting means provided directly below the mounting table 3 to detect the weight of the object to be heated and outputs a weighing signal according to the detected weight; 6 is a weight detecting means for heating the object to be heated; Cooking type setting means 8 sets a cooking type by operating a cooking type setting key 7 provided on the main body 2 and outputs the set cooking type information; 10 is a cooking start key output means for outputting a cooking start signal by operating a cooking start key 11 provided on the main body 2; 12 is the measurement signal output terminal 8; Container heat capacity calculating means receives the weighing signal, reads the container weight information W1 from the weight detecting means 5, and calculates the heat capacity Q't- of the container based on a predetermined calculation formula prepared in advance; 13 is the weighing signal; and reads the container weight information Wl'z, receives the cooking start signal, reads the total weight information W2 which is the sum of the weights of the food and the container, and calculates the net food weight Wot based on the image information W1 and W2. A net food amount calculation means 14 automatically sets a heating time according to the container heat capacity Q and the net food weight Wo based on a predetermined calculation formula prepared in advance from the cooking type information, and also outputs a heating time setting end signal. The heating time setting means 15 is a heating control means that receives the heating time setting end signal and controls the operation of the high frequency heating means 4 in accordance with the heating time set by the heating time setting means 14.

The operation of heating food in the high-frequency heating device configured as above will be explained.

For example, when heating milk as an object to be heated, first place a container containing the milk on the mounting table 3 and press the weighing key 9, the weighing signal output means 8 outputs a weighing signal, and the container heat capacity calculating means 12 Upon receiving this weighing signal, the weight detecting means 5
Read container weight information w1 and use a predetermined formula (for example, Q = CXWIQ is the heat capacity of the container, C is the specific heat of the container (generally used in high-frequency heating devices such as glass and ceramics).

Since the specific heat of the porcelain materials is approximately the same, it is taken as a constant. )
, Wl is the container weight), the container heat capacity Q is calculated. At the same time, receiving the weighing signal, net food amount calculation means 13
The container weight information W1 of the weight detection means 5 is also read.

Next, milk is poured into the container and the cooking type setting key 1 (upper 14) reads this cooking type information.

Next, when the cooking start key 11 is pressed, the cooking start signal output means 10 outputs a cooking start signal, and the net food amount calculation means 13
receives this cooking start signal and reads the total weight information W2, which is the combined weight of the container and the food, from the weight detection means 5, and also reads the container weight information W1 read earlier.
A net food weight Wo is calculated by combining the above, and this net food weight WO is output to the heating time setting means 14 as information.

Then, the heating time setting means 14 uses the previously read cooking type information and a predetermined calculation formula prepared in advance (for example, T.
o is the net weight of the food, Q is the heat capacity of the container, and K1゜K2 is a constant that varies depending on the type of cooking).
Set the heating time T according to the information on o and the container heat capacity Q,
A heating time setting end signal is output to the heating control means 15.

Upon receiving this heating time setting completion signal, the heating control means 15 operates the high frequency heating means 4 to start heating, and stops the high frequency heating means 4 when the heating time has elapsed.

In this way, in this embodiment, the heat capacity of the container to be used and the net weight of the food can be calculated, and a predetermined heating time can be set according to both of them. It is possible to obtain a heating cooker with excellent usability without causing unevenness in the finished state of heated items.

As explained above, according to the present invention, the container heat capacity calculation means calculates the container heat capacity based on the weight information based on the weight detection means that detects the weight of the object to be heated, and the food net amount calculation means calculates the food net weight. In addition to providing the means, the heating time calculation means calculates the heating time according to the container heat capacity information and the food net weight information, and the heating time control means is provided for controlling the high frequency heating means based on this heating time. Therefore, it is possible to provide a high-frequency heating device that is excellent in usability and can always provide an optimal heating state for food even if the amount of food to be cooked and the size of the container used change.

[Brief explanation of the drawing]

FIG. 1 is a simplified front view of a high-frequency heating device showing one embodiment of the present invention, and FIG. 2 is a block diagram illustrating the control system of FIG. 1. 1... Heating chamber 3... Placing table 4... High frequency heating means 5... Weight detection means 8... Weighing signal output means 12... Container heat capacity calculation means 13... Net food amount calculation Means 14... Heating time setting means 15...
Heating control means agent Masuo Oiwa (2 people)

Claims (1)

[Claims] In a high-frequency heating apparatus, a mounting table for placing an object to be heated is provided in a heating chamber, and the weight of the object to be heated is detected by a weight detection means to set the heating time by the high-frequency heating means.1.
Container heat capacity calculation means for calculating the heat capacity of the container based on weight information of the container containing the object to be heated output from the weight detection means; and weights of the object to be heated and the container output from the weight detection means. a food net amount calculating means for calculating the net weight of the object to be heated based on the total weight information and the weight information; and a container heat capacity calculated by the container heat capacity calculating means and the food net amount. heating time setting means for setting a predetermined heating time according to the net amount of food calculated by the calculating means; and operation of the high-frequency heating means based on the predetermined heating time set by the heating time setting means. A high-frequency heating device characterized by being provided with a heating control means for controlling.