JP2018087643A - High-frequency heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-frequency heating cooker capable of optimally heating a liquid object to be heated without being influenced by the shape of a container.SOLUTION: There is provided a high-frequency heating cooker comprising a main body which is equipped with a heating chamber 2 that stores an object 105 to be heated for heating the same, a door that covers the front face of the heating chamber 2, high-frequency heating means that heats the object 105 to be heated, weight sensors 5a, 5b, 5c disposed below the heating chamber 2 to detect the weight of the object 105 to be heated, an ultrasonic distance sensor 110 disposed above the heating chamber 2 to detect the height of the object 105 to be heated, and control means that determines a heating amount for heating the object 105 to be heated on the basis of the weight thereof and adjusts the heating output on the basis of the height thereof, and controls a heating period so as to make the heating amount uniform.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a high-frequency heating cooker having an automatic cooking function.

  Patent Document 1 discloses a high-frequency heating apparatus that detects the weight of an object to be heated, calculates the heating time and position information of the object to be heated, and controls the rotation of a rotating antenna to control the heating of the object to be heated. Yes.

JP 2010-127492 A

  In the high-frequency heating device shown in Patent Document 1 above, information in the height direction of the object to be heated cannot be detected. For example, the diameter is small and the height is high due to the difference in the container in which the object to be heated is placed even with the same weight. When a container is used, and when a container with a large diameter and a short height is used, the shape of the liquid heated object (such as liquor) that enters the container varies depending on the shape of the container. There is a problem that the phenomenon (heating unevenness) is different.

  The present invention has been made in order to solve the above-described problems, and includes a heating chamber that is stored in a main body for heating an object to be heated, a door that covers a front surface of the heating chamber, and the object to be heated. High-frequency heating means, a weight sensor provided below the heating chamber for detecting the weight of the heated object, an ultrasonic distance sensor provided above the heating chamber for detecting the height of the heated object, and the weight From the height, a heating amount for heating the object to be heated is determined, and the heating output is adjusted from the height to control the heating time so that the heating amount becomes the same.

  ADVANTAGE OF THE INVENTION According to this invention, the high frequency heating cooker which can optimally heat a liquid to-be-heated object irrespective of the shape of a container is provided.

It is a front view of the heating cooker in one Example. It is (a) top view and (b) side view of the heating cooker in one Example. It is a front perspective view of the state which removed the cover of the heating cooker, and the door opened. It is AA sectional drawing of Fig.2 (a). It is explanatory drawing explaining the state of the to-be-heated object by the difference in the container to be used. It is explanatory drawing explaining the state of the to-be-heated object by the difference in a container different from FIG.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  As shown in FIGS. 1 to 6, the cooking device of the present embodiment includes a heating chamber 2 that houses a heated object 105 such as food to be cooked in the main body 1, and a heating chamber that is provided in front of the heating chamber 2. An openable / closable door 3 for taking in and out the object 105 and a table 4 on which a heated object 105 provided on the bottom surface of the heating chamber 2 is placed. The door 3 has a handle 26 at the top.

  Under the table 4, weight sensors 5a, 5b, 5c for supporting the table 4 are provided, and the cooking time is determined according to the weight of the heated object 105 detected by the weight sensors 5a, 5b, 5c. Can do.

  A temperature sensor 40 composed of a thermistor is provided in the upper left part of the heating chamber 2, and cooking output, cooking time, etc. can be determined according to the temperature detected by the temperature sensor 40. An infrared sensor or the like may be used. Further, an ultrasonic distance sensor 110 is provided in the approximate center of the upper wall surface 2 d of the heating chamber 2, and the ultrasonic distance sensor 110 is reflected by an oscillator 110 a that transmits ultrasonic waves to the heated object 105 below and the heated object 105. And a receiver 110b that receives the reflected wave that has returned, measures the distance of the object to be heated 105 in the time from transmission to reception of the reflected wave, and subtracts the distance from the height of the heating chamber 2 The height of the object to be heated 105 can be measured.

  Moreover, the window part 23 formed large is provided in the center part of the door 3, and the inside of the heating chamber 2 during cooking can be seen. Further, an operation display unit 6 is provided below the door 3.

  Reference numeral 25 denotes a cover that covers both side surfaces and the upper surface of the cooking device.

  The heating cooker of the present embodiment includes a plurality of heating means 31, and specifically, a high-frequency heating means 32 that performs high-frequency heating cooking, an oven heating means 33 that performs oven cooking, and a grill heating means that performs grill cooking. 34. Four kinds of heating means 31 of the steam heating means 35 for performing steam cooking are provided, and various cooking can be performed by performing each heating means 31 alone or in combination.

  Next, the heating means 31 will be described.

  In the high-frequency cooking, the object to be heated 105 placed on the table 4 is microwaved, and the object to be heated 105 is actively moved by frictional heat generated by vibrating molecules such as moisture in the object to be heated 105. It is a cooking method to heat.

  As shown in FIG. 3 or FIG. 4, the high-frequency heating means 32 for performing high-frequency cooking is a magnetron 7 that oscillates a microwave that is a heating source for high-frequency cooking, as shown in FIG. 3 or 4. An inverter board 8 including an inverter circuit that supplies power to the magnetron 7 and controls the output of the microwave is provided. This inverter board 8 is controlled by the control means 9 and can apply a desired microwave to the article 105 to be heated to perform microwave heating.

  As shown in FIG. 4, the waveguide 10 that guides the microwave oscillated from the magnetron 7 to the heating chamber 2, the rotating antenna 11 that irradiates the heating chamber 2 while stirring the microwave, and the rotating antenna 11 are rotated. In order to prevent the microwave from concentrating on a part, the control means 9 controls the antenna motor 12 to rotate the rotating antenna 11 to perform a desired stirring operation.

  The magnetron 7, the waveguide 10, the rotating antenna 11, and the antenna motor 12 are disposed in the machine chamber 13 between the heating chamber bottom 2 a and the bottom plate 30.

  Next, the grill heating means 34 that performs grill cooking will be described. The grill heating means 34 includes an electric heater 14 outside the upper wall surface 2 d of the heating chamber 2. The electric heater 14 is controlled by the control means 9 to apply desired radiant heat (far infrared rays) to the heated object 105 placed on the table 4 by setting the upper wall surface 2d of the heating chamber 2 to an appropriate temperature. Grill cooking is performed by a heating method of baking the object to be heated 105 from the surface.

  Next, the oven heating means 33 that performs oven cooking will be described. Oven cooking is a heating method that heats the object to be heated 105 by applying hot air to the object to be heated 105 placed on the table 4 by the hot air unit 15 provided outside the heating chamber back 2b. is there.

  The oven heating means 33 for performing the oven cooking is constituted by a hot air unit 15, and the hot air unit 15 is provided with a blower means 16 such as a fan that is rotatably provided at substantially the center of the heating chamber back 2 b, and the blower means 16. The electric heater 17 provided on the outflow side of the air flow and the motor 18 connected to the blowing means 16 are configured.

  And the hot air which came out of the hole 21 near the electric heater 17 heats the to-be-heated object 105, and the air after heating the to-be-heated object 105 passes through the hole 22 provided in the approximate center part of the heating chamber back 2b. It is taken into the hot air unit 15 again.

  Next, the steam heating means 35 that performs steam cooking will be described. Steam cooking is a cooking method in which steam is given to the object to be heated 105 placed on the table 4 and the object to be heated 105 is heated.

  As shown in FIG. 1, the steam heating means 35 for performing steam cooking feeds water from the detachable tank 50 to the water supply means 19 through the pipe 51 below the heating chamber 2, and steam from the water supply means 19 through the pipe 52. Water is sent to the generating means 20, and water vapor is generated by the steam generating means 20. The steam generating means 20 is provided outside the heating chamber side surface 2 c and ejects a jet port 7 a to the heating chamber 2.

  The water supply means 19 and the steam generation means 20 are controlled by the control means 9 to supply a desired amount of steam to the heating chamber 2.

  The control means 9 includes the magnetron 7 of the high frequency heating means 32, the inverter board 8, the electric heater 17 and the motor 18 of the oven heating means 33, the electric heater 14 of the grill heating means 34, the steam generating means 20 of the steam heating means 35, The water supply means 19 is controlled.

  Next, the operation display unit 6 provided at the lower part of the door 3 as shown in the front view of the main body of FIG. 1 will be described.

  The operation display unit 6 is provided over the entire width of the door 3, and is adjacent to the right of the display unit 70 with a touch panel (details will be described later) and the display unit 70 with a touch panel at the approximate center of the width of the operation display unit 6. An operation key group 60 composed of four operation keys arranged in two horizontal rows and two operation keys, a start means 6b on the upper right side of the operation display unit 6, and a "Takeshiki" key 6c on the lower side. Yes.

  The operation using the operation key group 60 may be either a touch switch or a mechanical switch (a switch that mechanically opens and closes a contact).

  The start means 6b and the “Takeshike” key 6c use mechanical switches.

  The start means 6b includes automatic heating for heating the heated object 105 using a weight sensor 5 for measuring the weight of the heated object 105, which will be described later, and an ultrasonic distance sensor 110 for measuring the height of the heated object 105. This also serves as an input for starting cooking according to the setting operated on the display unit 70 with a touch panel described later. A light emitting element (not shown) is provided inside the start means 6b, and the light emitting element blinks (or lights up) when an input is valid. The “Takeshiki” key 6c is operated to stop the heating in progress, shift to a standby state, and take out the article 105 to be heated.

  Next, the automatic heating described above will be described with reference to FIGS.

The start means 6b measures the weight of the heated object 105, which will be described later, by the weight sensor 5, determines the heating time for heating at a specific heating output according to the weight, and measures the heated object measured by the ultrasonic distance sensor 110. The heating output is adjusted according to the height of 105 and the weight, and the heating output after adjustment is automatically heated by the high-frequency heating means 32, and the setting is operated by the display unit 70 with a touch panel described later. When the heating of the object to be heated 105 is started by the start means 6b, the weight sensor 5 measures the weight of the object to be heated 105 and determines the amount of heating corresponding to the detected weight (specification). The heating time when the heating object is heated with the heating output of 10), and the object to be heated 10 is calculated from the height and the weight of the object 105 measured using the ultrasonic distance sensor 110. 5 is predicted, and the object to be heated 105 is heated under conditions that allow the object to be heated 105 having the predicted shape to be optimally heated (a heating method with less heating unevenness).

  Here, the case where a drink is heated is demonstrated.

  5 and 6 shows the state of the heated object 105 shown in FIG. 5, in which a container 100a having a large diameter and a tall container 100a is used, and the heated object 105 is almost fully filled in the used container 100a. In this state, the object to be heated 105 is high in the height direction and heavy.

  In FIG. 6, the container 100b used has a small diameter (relative to the container 100a) and a tall container 100b (the same height as the container 100a), and the used object 100b is almost filled with the heated object 105. In this state, the object to be heated 105 is high in the height direction and light in weight.

  From the above, by detecting the weight and height of the object to be heated 105, it is possible to estimate the size (diameter size) of the object to be heated 105 in the height direction.

  The state in which heating unevenness is likely to occur in the states of FIG. 6 and FIG. 5 is the state of the object to be heated 105 shown in FIG. The reason is that convection is unlikely to occur where there is a temperature difference of the object to be heated 105 when heated, and in the worst case, there is a danger that the object to be heated 105 will bump.

  Although not shown, when the weight is heavy and the height is short, there is a state in which a small amount of the object to be heated 105 is placed in the container 100 having a large diameter. In this case as well, since convection hardly occurs during heating, uneven heating is likely to occur.

  When such a state in which heating unevenness is likely to occur is detected, by controlling the heating amount to be the same by weakening the heating output and setting the heating time longer, the convection of the object to be heated 105 Heating unevenness is reduced by the effect of reducing the temperature difference due to stirring or heat conduction in the heated object 105. And the temperature of the to-be-heated object 105 after completion | finish of a heating is finished so that the to-be-heated object 105 from which a state differs will be substantially the same temperature when the weight is the same by controlling so that a heating amount may become the same.

  According to the present embodiment described above, the liquid object to be heated can be optimally heated regardless of the shape of the container.

DESCRIPTION OF SYMBOLS 1 Main body 2 Heating chamber 3 Door 6 Operation display part 6b Start means 31 Heating means 70 Display part 100 (100a, 100b) with a touch panel Container 105 To-be-heated object 110 Ultrasonic distance sensor

Claims (1)

A heating chamber for storing an object to be heated in the main body;
A door covering the front of the heating chamber;
High-frequency heating means for heating the object to be heated;
A weight sensor provided below the heating chamber for detecting the weight of the object to be heated;
An ultrasonic distance sensor provided above the heating chamber to detect the height of the object to be heated;
Control means for determining a heating amount for heating the object to be heated from the weight and adjusting the heating output from the height to control the heating time so that the heating amount becomes the same. High frequency cooking device.

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