JP2969952B2 - High frequency heating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency heating apparatus for controlling the heating of a heating means by detecting the state of an object to be heated based on the humidity in a heating chamber.

[0002]

2. Description of the Related Art In recent years, it has been demanded that a high-frequency heating apparatus be capable of cooking an object to be heated to a finish according to a user's preference and to be easy to use.

Conventionally, this type of high-frequency heating apparatus generally has a configuration as shown in FIG. Hereinafter, the configuration will be described.

As shown in FIG. 1, an object to be heated (not shown) is placed in a heating chamber 1 and heated by a heating means 2 such as a magnetron or a heater. The cooking menu setting key 3 sets a cooking menu for the object to be heated. The cooking time setting key 4 sets the cooking time of the object to be heated. The start key 5 instructs start of cooking. The humidity sensor 6 detects the humidity in the heating chamber 1 to detect the cooking state of the object to be heated. The microcomputer 7 includes a cooking setting means 8 and a control means 9,
The cooking setting means 8 inputs a setting input of the cooking menu setting key 3 and a setting input of the cooking time setting key 4, sets a cooking sequence corresponding to each setting input, and inputs the sequence to the control means 9. When there is an instruction to start cooking from the start key 5, the control means 9 controls the heating means 2 based on the cooking sequence of the cooking setting means 8, and at the same time inputs the detection output of the humidity sensor 6 and controls the heating means 2. .

In the above configuration, the operation will be described with reference to FIG. 4. When an object to be heated is placed in the heating chamber 1, a cooking menu is set by the cooking menu setting key 3, and then the start key 5 is turned on. There was started, the control means 9 drives 30 seconds heating means 2 at the output P _1. Thereafter, after the heating means 2 is turned off for 30 seconds, the heating means 2 is driven for a time T ₁ ′ until the humidity sensor 6 detects the output P ₁ again. The output P ₁ of the heating means 2 from the cooking start to the humidity sensor 6 is determined for each cooking menu. When the humidity sensor 6 detects the cooking state, the control means 9 increases the heating time T ₁ (= 30 seconds +
The time T ₂ is calculated based on T ₁ ′), and the heating means 2 is driven with the output P ₂ to end the cooking.

[0006]

In such a conventional high-frequency heating apparatus, the degree of cooking depends on the humidity sensor 6, and the characteristics of the humidity sensor 6 vary with temperature.
There has been a problem that the degree of cooking may be insufficient depending on the state of the heating chamber 1 before cooking. As a solution to this, there is a method in which a key for setting the strength of the cooking is set to be stronger or weaker. However, there is a problem that the user cannot completely cope with the variety of the cooking done by the user.

The present invention has been made to solve the above-mentioned problems, and it is intended that after cooking is completed, additional cooking can be performed only by setting the time as needed, so that the degree of cooking according to the user's preference can be obtained. The purpose is.

[0008]

According to the present invention, in order to achieve the above object, a control means for driving a heating means inputs a cooking time with a cooking time setting key within a predetermined time after the completion of cooking, and a start key. When the cooking is started, the heating means is driven in the cooking sequence before the cooking is completed.

[0009]

According to the present invention, additional cooking can be performed in the cooking sequence before the end by operating the cooking time setting key and the start key as required after cooking is completed, for example, according to the user's preference. it can.

[0010]

An embodiment of the present invention will be described below with reference to FIG. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG.
0 has timer means 11 and storage means 12,
The timer means 11 starts its operation after the completion of cooking, and outputs an output to the control means 13 after a lapse of a predetermined time (for example, three minutes). The storage means 12 stores the cooking sequence at least for a predetermined time of the timer means 11.

[0012] In operation in the above configuration sets a cooking menu by cooking menu setting key 3, when an instruction to start cooking by the start key 5, the heating means 2 at the output P ₁ as shown in FIG. 2 (B) 30 Driven for seconds. At this time, since the humidity sensor 6 is heated by a heater (not shown) in order to burn out the surface dirt, the humidity sensor 6 exhibits thermistor characteristics in the range of the time a in FIG. Thereafter, by stopping the energization of the heater, the humidity in the heating chamber 1 is detected in the range of time b. On the other hand, the heating means 2 is driven for 30 seconds, stopped for 30 seconds, and driven again. In this state, the heated object rapidly generates steam,
1 minute and 3 seconds after the start of cooking, the humidity sensor 6 starts detecting the humidity in the heating chamber 1 and its minimum value (Min Hold value)
When a certain level or more is detected several times from this reference, it is determined that steam has been generated from the object to be heated, and the output is input to the control means 13.
The output of the drive during the time T ₂ by P _2, and terminates the cooking. At this time, the cooking sequence is stored in the storage unit 12.

After cooking is completed, if the user wishes to cook further, the additional cooking time is set by the cooking time setting key 4 within a predetermined time of the timer means 11 and the start key 5 is operated. It was started, the control unit 13 stores contents of the storage unit 12, i.e. by driving the heating means 2 in the output P _2, and add cooking. At this time, the humidity in the heating chamber 1 is detected by the humidity sensor 6, and if the additional time is too long, the additional cooking is forcibly terminated to prevent overheating.

[0014]

As is apparent from the above embodiment, according to the present invention, the control means for driving the heating means inputs the cooking time with the cooking time setting key within a predetermined time after the completion of cooking, and the start key. When cooking was started, the heating means was driven in the cooking sequence before the end, so after the end of cooking, additional cooking can be done only by setting the time as needed,
The degree of cooking according to the preference of the user can be obtained, and the usability can be improved.

Further, even if the setting of the additional cooking time is too long, the additional cooking can be forcibly terminated by the humidity sensor, and the cooking performance can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram of a high-frequency heating device according to one embodiment of the present invention.

FIG. 2 (A) Time chart of humidity sensor output of the high-frequency heating device (B) Operation time chart of the high-frequency heating device

FIG. 3 is a block diagram of a conventional high-frequency heating device.

FIG. 4 is an operation time chart of the high-frequency heating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heating room 2 Heating means 3 Cooking menu setting key 4 Cooking time setting key 5 Start key 6 Humidity sensor 13 Control means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) F24C 7/02 340 F24C 7/02 301 F24C 7/02 325 H05B 6/68 320

Claims (1)

(57) [Claims] 1. A heating chamber for placing an object to be heated, heating means for heating the heating chamber, a cooking menu setting key for setting a cooking menu for the object to be heated, and a cooking time for the object to be heated. A cooking time setting key to be set, a start key for instructing a start of cooking, a humidity sensor for detecting humidity inside the heating chamber, and a cooking menu set by the cooking menu setting key by inputting an output of the humidity sensor. Or control means for driving the heating means based on the cooking time set by the cooking time setting key, wherein the control means inputs the cooking time with the cooking time setting key within a predetermined time after the cooking is completed, and When the cooking is started by a start key, the high frequency heating device drives the heating means in a cooking sequence before the end.