JP2010101531A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To finish a heated object after heating cooking with high quality by efficiently applying ultraviolet ray to the heated object while preventing unevenness in irradiation. <P>SOLUTION: This heating cooker includes a heating chamber 14, a plurality of light irradiating means 16 for applying ultraviolet ray to the heated object 12, a loading table 18, a shape detecting means 21 for detecting the shape of the heated object 12, and a control means 24, and the control means 24 controls a lighting state of the light irradiating means 16 according to the shape of the heated object 12 on the basis of a detection signal of the shape detecting means 21 to finish the cooked heated object 12 with high quality. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a cooking device that provides a high-quality heated object after cooking.

Conventionally, this type of cooking device includes a cooking device (for example, see Patent Document 1) including an ultraviolet irradiation device that irradiates an object to be heated in a heating chamber with ultraviolet light having a wavelength of 300 nm or less.
JP 2007-292353 A

  However, in the configuration of Patent Document 1, since the irradiation intensity is constant when the object to be heated is irradiated with ultraviolet rays, the irradiation intensity is different between the thick object to be heated and the thin object to be heated. In addition, since the distance between the ultraviolet irradiation means and the object to be heated is constant and the irradiation area does not change, if the object to be heated is large, a portion that is not irradiated with ultraviolet rays is formed, causing uneven irradiation, and if the object to be heated is small In addition, there is a problem that the place of the heating chamber where the object to be heated is not placed is irradiated with ultraviolet rays and is inefficient.

  The present invention solves the above-mentioned conventional problems, and a plurality of light irradiation means for irradiating ultraviolet rays are arranged, and the lighting state of the light irradiation means is controlled according to the size of the object to be heated, so that the object to be heated is provided. It is an object of the present invention to provide a heating cooker that can efficiently irradiate ultraviolet light or finish an object to be heated to a high quality while preventing uneven irradiation.

  In order to solve the above-mentioned conventional problems, a heating cooker according to the present invention is a heating cooker for heating and cooking an object to be heated, and irradiates the object to be heated with ultraviolet light, and a heating chamber for storing the object to be heated. A light irradiation means; a shape detection means for detecting the size of the object to be heated; a mounting table for placing the object to be heated; and a control means for controlling the light irradiation means. A plurality of heaters are disposed above the heating chamber.

  Thus, the plurality of light irradiation means can operate all to irradiate ultraviolet rays all over the area that can store the object to be heated, and select a light irradiation means to be operated to select a specific light irradiation means. It is possible to irradiate only the area, and by controlling the lighting state of the light irradiation means according to the size of the object to be heated, the object to be heated is efficiently irradiated with ultraviolet light, and the object to be heated becomes high quality. You can finish it and save unnecessary energy.

  The heating cooker of the present invention has a plurality of light irradiation means for irradiating ultraviolet rays, and controls the lighting state of the light irradiation means according to the size of the object to be heated, thereby efficiently radiating ultraviolet light to the object to be heated. Irradiation can finish the object to be heated to high quality, and unnecessary energy can be saved.

  1st invention is a heating cooker which cooks to-be-heated material, the heating chamber which accommodates to-be-heated material, the light irradiation means to irradiate the said to-be-heated material with ultraviolet light, and the magnitude | size of the to-be-heated material A shape detection means for detecting the object to be heated, a mounting table for placing the object to be heated, and a control means for controlling the light irradiation means. A plurality of the light irradiation means are disposed above the heating chamber. It is.

  As a result, the plurality of light irradiation means can operate all to irradiate the entire area where the object to be heated can be stored with ultraviolet rays, and select a light irradiation means to be operated to select a specific region. Can only be irradiated.

  The second invention is characterized in that, in particular, the control means of the first invention varies the number of lighting of the light irradiation means based on the signal of the shape detection means.

  Thus, by controlling the lighting state of the light irradiation means according to the size of the object to be heated, the object to be heated is efficiently irradiated with ultraviolet light to finish the object to be heated to a high quality or unnecessary. You can save energy.

  The third aspect of the invention is characterized in that the control means of the first aspect of the invention variably controls the lighting time of the light irradiation means based on the signal of the shape detection means.

  Thereby, since the irradiation time of ultraviolet light can be adjusted according to the distance between the light irradiation means and the object to be heated, the object to be heated can be finished with high quality while omitting unnecessary energy.

  The fourth aspect of the invention is characterized in that, in particular, the control means of the first aspect of the invention controls blinking of the light irradiation means based on a signal from the shape detection means.

  This makes it possible to variably control the irradiation condition of the ultraviolet light according to the size of the object to be heated and the distance between the light irradiation means and the object to be heated, so that the object to be heated is made high quality while omitting unnecessary energy. Can be finished.

  In the fifth invention, in particular, the light irradiation means of the first invention emits a spectral wavelength of 300 to 400 nm.

  Thereby, the active ingredient of a to-be-heated material can be increased, preventing quality degradation.

  In a sixth aspect of the present invention, in particular, the cooking device of any one of the first to fifth aspects includes a heating unit that heats an object to be heated in the heating chamber, and the control unit operates the light irradiation unit. The heating means is operated during or after operation.

  Thereby, the active ingredient of a to-be-heated material can be increased efficiently during cooking.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a schematic diagram of a heating cooker according to Embodiment 1 of the present invention, FIG. 2 is a central cross-sectional view according to Embodiment 1 of the present invention, and FIG. FIG. 4 is a layout diagram of main parts in the first embodiment, and FIG. 5 is a layout diagram showing an example of the light-on / off operation of the light irradiation means in the first embodiment of the present invention.

  As shown in FIGS. 1 to 4, the cooking device according to the present embodiment has a main body 11 with a door portion 13 for inserting and removing the article 12 to be heated and a heating chamber 14 for containing the article 12 to be heated. ing. The heating means 15 (heating means 15a, 15b) is used when the object to be heated 12 in the heating chamber 14 is heated by radiant heat or convection heat.

  The light irradiating means 16 (light irradiating means 16 a to 16 t) is a structure in which a plurality of black lights, ultraviolet LEDs, and the like are assembled, for example, and is disposed on the top surface or wall surface of the heating chamber 14. The object to be heated 12 is irradiated with light having a spectral wavelength of 300 to 400 nm. In the present embodiment, a state in which the light irradiation means 16 is disposed on the top surface of the heating chamber 14 is illustrated. The cover 17 is made of a transparent material (for example, quartz glass) that mainly transmits the ultraviolet wavelength region. Moreover, the cover 17 prevents the light irradiation means 16 from being damaged by the heat of the heating means 15.

  FIG. 3 shows a partially enlarged view of the light irradiation means 16, and FIG. 4 shows an arrangement of the heating means 15 (heating means 15a and 15b) and the light irradiation means 16 (light irradiation means 16a to 16t).

  On the mounting table 18, the heated object 12 to be cooked is mounted, and is driven in the vertical direction by the motor 20 via the shaft 19.

  The shape detection means 21 (shape detection means 21a, 21b) is composed of a photoelectric switch, and on the mounting table 13 based on the respective signals of the photoelectric switch obtained by changing the height of the mounting table 18 in the vertical direction. The shape and size of the object to be heated 12 are determined.

  A safety switch 22 is disposed near the opening of the door portion 13 of the heating chamber 14 and detects whether the door portion 13 is open or closed. A shielding means 23 made of, for example, a material that reflects electromagnetic waves or ultraviolet light is attached to the door 13 on the heating chamber 14 side. The control unit 24 controls the heating unit 15 and the light irradiation unit 16 based on detection signals from the shape detection unit 21 and the safety switch 22.

  About the cooking-by-heating machine which consists of the said structure, the operation | movement and an effect | action are demonstrated below.

  When cooking is started, the control unit 24 starts the operations of the heating unit 15, the light irradiation unit 16, and the shape detection unit 21 after confirming that the door portion 13 is in the closed state based on the signal from the safety switch 22. When the door portion 13 is in the closed state, the control means 24 notifies the user without starting the operation in order to prevent the ultraviolet light from leaking from the heating chamber 14. The notification method is not limited.

  In addition, when the door portion 13 is opened while the light irradiation means 16 is operating, the control means 24 promptly stops the operation of the light irradiation means 16 by the signal from the safety switch 22. A film-shaped or plate-shaped shielding means 23 made of a material that reflects, blocks, or absorbs ultraviolet light is attached to the door portion 13. When the door part 13 is comprised with glass etc., the glass of the door part 13 is permeate | transmitted and it can prevent that ultraviolet light leaks outside, and can improve safety | security. In the present embodiment, the shielding means 23 is disposed on the heating chamber 14 side, but may be disposed outside the door portion 13.

  The control means 24 operates the light irradiation means 16 for a predetermined time. The light irradiation means 16 irradiates light having a spectral wavelength of 300 to 400 nm. Protein denaturation occurs at wavelengths shorter or longer than this wavelength band. By selecting this wavelength band, the enzyme can be activated while preventing deterioration of the component of the heated object due to ultraviolet light.

  The light irradiation means 16 continues the operation for a predetermined time set in advance before cooking, or until the article to be heated 12 reaches a predetermined temperature. When the light irradiation means 16 irradiates the object to be heated 12 with ultraviolet light, the enzyme contained in the object to be heated 12 is activated, and the protein contained in the object to be heated 12 has a low effect on the taste of amino acids and peptides. Decomposition into molecular components increases umami. Therefore, the to-be-heated material after cooking can be finished in high quality.

  The shape detection means 21 detects the size and shape of the object to be heated 12 placed on the placement table 18 and sends a signal to the control means 24. From the state (condition) in which the object to be heated 12 blocks light reaching the photoelectric switch, the control unit 24 determines the planar (depth) shape and thickness (height) of the object to be heated 12 on the mounting table 18. To do. In the present embodiment, the shape detection means 21 is arranged to face the left and right side wall surfaces in pairs, and determines the size and shape of the object to be heated 12 in the depth direction. In the present embodiment, a state in which a pair of shape detecting means 21 is disposed on the side wall surface is shown in FIGS.

  Next, the control method of the light irradiation means 16 based on the detection signal of the shape detection means 21 is demonstrated using FIG. 4, FIG.

  The control unit 24 operates the motor 20 to move and change the mounting table 18 in the vertical direction, and determines the size and shape of the object to be heated 12 based on the respective detection signals of the shape detection unit 21 obtained at this time. Then, control of the lighting state of the light irradiation means 16 is started.

  For example, when the size of the object to be heated 12 is large, it is necessary to irradiate a large area with ultraviolet light, and therefore the number of lighting units 16 is increased. FIG. 5A shows an example of a lighting state when irradiating a wide area. A white part shows a lighting state and a colored part shows a light-off state. Each light irradiation means 16a-16t which comprises the light irradiation means 16 is lighted. That is, by increasing the number of light irradiation means 16 to be lit, it is possible to irradiate ultraviolet light over a large area without unevenness.

  On the other hand, when the size of the object to be heated 12 is small, in order to reduce useless energy by irradiating a narrow area with ultraviolet light, when reducing the number of lighting of the light irradiation means 16 or energizing all the number, Control such as blinking. That is, the individual light irradiation means 16f, 16g, 16i to 16l, 16n, 16o constituting the light irradiation means 16 are turned on. FIG.5 (b) has shown an example of the lighting state in the case of irradiating a narrow area. The classification of the white portion and the colored portion is as described above.

  In the present embodiment, in the case of irradiating ultraviolet light, whether or not the light emission intensity of the light irradiation means 16 is controlled and the cycle (time) of blinking can be freely determined.

  In this way, by controlling the lighting state of the light irradiation means 16 according to the size and shape of the object to be heated 12 or the distance between the light irradiation means 16 and the object to be heated 12, irradiation is performed while eliminating energy waste. The object 12 can be efficiently irradiated with ultraviolet light while preventing unevenness.

  The control means 24 heats the article 12 to be heated by the heating means 15 after irradiating the article 12 with ultraviolet light for a predetermined time. The heating means 15 heats the article to be heated 12 with radiant heat or convection heat. During heating, the heating means 15 and the light irradiation means 16 can be used in combination. However, the total power used by the heating means 15 and the light irradiation means 16 is controlled within a range that does not exceed the total power used by the apparatus. When used in combination, the umami component can continue to be increased during heating until the enzyme and the object to be heated 12 undergo thermal denaturation. The heating time is input in advance as the time or baking temperature, or is the time until the article to be heated 12 reaches a predetermined temperature. When the heating is completed, the control unit 24 stops the operation of the heating unit 15 and the light irradiation unit 16 and notifies the user using a display unit, a notification sound, or the like. The notification method is not limited.

It is also possible to control the end of heating by providing a temperature detection means and detecting the temperature of the article to be heated 12 every time a predetermined time has elapsed since the start of the operation of the heating means 15 and the light irradiation means 16. is there. Since the temperature of the heating chamber 14 is low at the initial stage of heating, the temperature of the object to be heated 12 can be determined. However, as the heating process proceeds, the temperature of the heating chamber 14 increases, When the determination becomes difficult, the temperature detection means is switched so as to measure only the temperature of the heating chamber 14. When the temperature detection means detects the temperature of the heating chamber 14, the control means 24 estimates the temperature of the object to be heated 12 from the relationship between the temperature of the heating chamber 14 stored in advance, the heating time, and the temperature of the object to be heated 12.

  In the present embodiment, the mounting table 18 has a movable configuration. However, the mounting table 18 has a fixed configuration, and a configuration in which photoelectric switches as the shape detection means 21 are arranged in a plurality of rows in the vertical direction of the heating chamber, or shape detection. An infrared sensor, an ultrasonic sensor, or the like may be used as the means.

  Further, the light irradiation means 16 prevents the heating means 15 from being damaged by the cover 17, but a cooling means such as a fan can be mounted and used together.

  As described above, according to the present embodiment, by controlling the lighting state of the light irradiation means that irradiates the object to be heated with ultraviolet light of 300 to 400 nm according to the size of the object to be heated, Efficiently irradiate ultraviolet light to finish the heated object with high quality and save unnecessary energy.

  The light irradiation means 16 has a spherical configuration, but may have a tubular configuration. Further, the placement position is not limited.

  Further, although not described in this embodiment mode, microwave irradiation means for irradiating microwaves or the like can be mounted. At this time, it is also possible to perform cooking using not only the heating means 15 but also microwaves.

  As described above, the cooking device according to the present invention has a plurality of light irradiation means for irradiating ultraviolet rays, and irradiates the object to be heated with ultraviolet light of 300 to 400 nm according to the size of the object to be heated. Since the taste of the object to be heated can be increased by controlling the lighting state of the means, it is effective for cooking devices such as a microwave oven, a microwave oven, an oven toaster, and a grilled fish grill.

Schematic of the heating cooker in Embodiment 1 of the present invention Central sectional view of the cooking device Partial enlarged view of the main part of the cooking device Layout of the main part of the cooking device The figure which shows an example of the lighting-off operation | movement of the heating cooker

Explanation of symbols

DESCRIPTION OF SYMBOLS 12 To-be-heated object 14 Heating chamber 15 Heating means 16 Light irradiation means 18 Mounting stand 21 Shape detection means 24 Control means

Claims (6)

In a heating cooker for cooking an object to be heated, a heating chamber for storing the object to be heated, light irradiation means for irradiating the object to be heated with ultraviolet light, and shape detection means for detecting the size of the object to be heated And a mounting table on which the object to be heated is placed, and a control means for controlling the light irradiation means, wherein a plurality of the light irradiation means are disposed above the heating chamber. The cooking device according to claim 1, wherein the control means varies the number of lighting of the light irradiation means based on the signal of the shape detection means. The cooking device according to claim 1, wherein the control means variably controls the lighting time of the light irradiation means based on a signal from the shape detection means. The cooking device according to claim 1, wherein the control means controls the light irradiation means to blink based on a signal from the shape detection means. The cooking device according to claim 1, wherein the light irradiation means emits a spectral wavelength of 300 to 400 nm. The heating cooker includes a heating unit that heats an object to be heated in a heating chamber, and the control unit operates the heating unit during or after the operation of the light irradiation unit. Cooking device.