JP5092978B2 - Cooking equipment - Google Patents

Description

  The present invention relates to a cooking device for heating an object to be heated by radio wave heating, grill heating or oven heating.

  The microwave oven, which is a heating device that can be cooked with typical radio waves, hot air, or steam, can heat food that is to be heated with a single heating device, so there is no need to prepare a pan, kettle, steamer, etc. It has become an indispensable device in daily life.

In addition, the oven microwave oven is configured to uniformly heat the food with the steam generated by the humidifier while heating it with a heater or the like. And after dripping salt or oil with water condensed on the surface of food, the surface is heated with a planar heater such as mica or a light lamp heater to enable healthy cooking (for example, patent documents) 1).
Japanese Patent No. 2897645

  However, the configuration of the conventional heating cooking apparatus shown in FIG. 8 includes an oven cabinet 2 for heating the object 1 to be heated, an evaporating dish 3 for heating water into steam, and steam generating means 4, and 2.5 μm or more and 3 μm or less. The infrared ray generating means 5 that radiates to the inside 2 of the oven centering on the infrared ray having one wavelength existing in the range of.

  According to the above configuration, a sufficient amount of water vapor can be supplied and heated in the oven cabinet 2, the oven cabinet 2 is filled with superheated steam, the superheated steam is condensed on the food surface and covered with condensed water, Deoiling and low salt cooking can be performed. At this time, if microwaves can be applied to the oven cabinet 2, the infrared ray generating means 5 formed of a quartz tube or the like encloses an inert gas such as argon gas, and the filament present inside However, there is a problem that discharge occurs due to electric field concentration due to radio wave heating and abnormal light emission occurs. Furthermore, if the filament is a Hanamaki type lamp that is in direct contact with the inner surface of the quartz tube, the composition of the tube surface is denatured to cristobalite, causing a devitrification phenomenon that becomes white and cloudy.

  The present invention solves the above-described conventional problems, and prevents abnormal light emission of infrared generation means by microwaves, and radiates infrared rays that are not easily absorbed by water vapor, thereby heating the inside of food quickly and uniformly. The object is to provide a cooking device whose surface can be crisp.

In order to solve the above conventional problems, the cooking apparatus of the present invention includes a heating chamber for heating materials, a microwave generating means for generating microwaves supplied to the heating chamber, the upper portion of the heating chamber in the infrared ray generating means tubular radiates infrared rays onto the object to be heated is provided, and the quartz tube of the tubular section of the infrared ray generating means, and an inert gas sealed in the quartz tube, coiled and bridged the quartz tube or A linear filament, and a plurality of support rings that are formed in the same material as the filament and are coiled to support the filament so as to be positioned at the approximate center of the quartz tube in the quartz tube, A bundling portion bundled with the filament, a coiled ring portion that is wound not less than 3.1 times and not more than 3.4 times so as to contact the inner surface of the quartz tube continuously to the bundling portion; The first, second and third line pitches are provided in this order from the binding part side, the first line pitch is 0.45 mm or more and 1.05 mm or less, and the second line pitch is 0.45 mm or more. 1.03 mm or less, and the third inter-line pitch is 0.3 mm or more and 0.9 mm or less .

  As a result, abnormal light emission generated from a support ring with a wavelength of 2.45 GHz, which is a frequency unique to microwaves, can be prevented, the temperature increase of the tube surface is suppressed, the quartz composition is denatured into cristobalite, and becomes white and cloudy. Devitrification can be prevented. Furthermore, the inside and the surface of the heated object placed in the heating chamber can be heated quickly and uniformly, the food surface is finished crisply, and the burnt eyes can be quickly applied.

  According to the cooking device of the present invention, it is possible to prevent abnormal light emission due to microwaves of the infrared ray generating means existing in the heating chamber, and to suppress the devitrification phenomenon in which the quartz composition on the tube surface is modified to cristobalite and becomes white and cloudy. Furthermore, the food surface can be given a crisp feeling by directly radiantly heating the inside of the food with infrared rays. In addition, since the heating source is present in the heating chamber, the temperature rise rate is very fast, so that efficient heating can be performed. That is, a cooking device with excellent energy saving performance can be provided.

A heating cooking apparatus according to a first aspect of the present invention is a heating chamber for heating an object to be heated, a microwave generating means for generating a microwave to be supplied to the heating chamber, and an infrared ray provided above the heating chamber. Tubular infrared ray generating means for radiating the light, a quartz tube of the tubular part of the infrared ray generating means, an inert gas sealed in the quartz tube, a coiled or linear filament laid in the quartz tube, and the filament And a plurality of support rings that are formed of the same material as the filament and support the coil so as to be positioned at the approximate center of the quartz tube in the quartz tube, and the support ring includes a bundling portion that is bound to the filament. the coiled ring portion less wound 3.4 times more than 3.1 times so as to contact the inner surface of the continuous bundling unit to the quartz tube, the first from the binding portion side, second The pitch between the lines is in this order, the pitch between the first lines is 0.45 mm to 1.05 mm, the pitch between the second lines is 0.45 mm to 1.05 mm, and the distance between the third lines The pitch is 0.3 mm or more and 0.9 mm or less .

Thereby, the infrared rays generated from the far-infrared ray generating means can quickly raise the temperature of the food and provide a cooking device with excellent energy saving performance . Moreover, abnormal light emission generated from the support ring of the infrared ray generating means existing inside the heating chamber can be prevented. Moreover, the infrared rays generated from the far-infrared ray generating means can quickly increase the temperature of the food and provide a cooking device having excellent energy saving performance .

  The cooking device according to the second aspect of the invention has a configuration in which, in the first aspect of the invention, the entire width of the ring portion of the support ring is 2.0 mm or more and 3.9 mm or less.

  Thereby, abnormal light emission generated from the support ring of the infrared ray generating means existing inside the heating chamber can be prevented. Moreover, the infrared rays generated from the far-infrared ray generating means can quickly increase the temperature of the food and provide a cooking device having excellent energy saving performance.

The cooking device according to a third aspect of the present invention is configured such that in the first or second aspect, the number of support rings is ten and the pitch between the support rings is about 33 mm.

  Thereby, the heating cooking apparatus which can suppress that an electromagnetic wave leaks from the inside of a heating chamber can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 and FIG. 2 are sectional views of an oven microwave oven which is a typical cooking device of the present invention. FIG. 1 is a sectional view seen from the inner side of the cabinet, and FIG. 2 is a sectional view seen from the front of the cabinet. 3 is a block diagram of the lamp heater (infrared ray generating means), FIGS. 4 to 6 are enlarged views of the support ring of the infrared ray generating means, and FIG. 7 is a characteristic showing the ratio of absorbing water vapor to the wavelength of light. It is a figure (from Nobuhiro Seki, Heat Transfer Engineering, Morikita Publishing Co., Ltd., 1988.5.20, P178, Fig. 6.21). The present embodiment is an oven microwave oven that uses a method of rotating two antennas, and is representative of supplying microwaves from below the mounting table 12 on which the food 11 that is a heated object is placed. This is an example in which a magnetron 13 which is a microwave generating means is provided on the right side, and a waveguide 15 for guiding the microwave generated from the magnetron 13 into the heating chamber 14 and a rotating antenna 16 for generating radio waves into the heating chamber 14 are provided. Provided.

  In particular, in the present embodiment, the lamp heater 17 which is an infrared ray generating means, the two miraclon heaters 18 which are far infrared ray generating means provided in parallel on both sides of the lamp heater 17, the drive of the magnetron 13, and the lamp heater 17 and a control means 19 that controls energization by turning on and off the Miraclone heater 18. The lamp heater 17 is an illuminant mainly encasing an argon gas 21, which is an inert gas, inside the quartz tube 20. It is made of a certain tungsten wire 22, and 10 support rings 23 are provided at equal pitch intervals to hold the coiled tungsten wire 22 so as not to contact the inside of the quartz tube 20 by its own weight.

  The support ring 23 has a full width L of 2 mm to 3.9 mm, a support ring line pitch 25a (first line pitch) of 0.45 mm to 1.05 mm, and a line pitch 25b (between the second lines). The pitch) is 0.45 mm or more and 1.05 mm or less, and the line pitch 25c (third line pitch) is 0.3 mm or more and 0.9 mm or less. Since the radio wave generated from the magnetron 13 is μ = 2.45 GHz, one wavelength is theoretically λ = c / μ≈122 mm.

  However, since the wavelength existing as a standing wave in the microwave oven is a mixed wavelength, it is considered to be longer than 122 mm. Therefore, as shown in FIG. 5, the pitch P between the support rings, which is the interval between the support rings 23, is set to an equal interval of λ / 4≈33 mm to suppress electric field concentration due to radio waves.

  Further, the lamp heater 17 radiates infrared light having a wavelength that is difficult to be absorbed by water vapor generated from the food itself, transmits the water vapor present in the heating chamber 14, and radiates the food 11 for cooking. The wavelength of infrared rays generated by the lamp heater 17 generates a wavelength having a peak at 1.5 μm or more and 1.8 μm or less, which is a wavelength in a region where the water vapor absorption rate is low as shown in FIG. The configuration has a peak in a wavelength region longer than about 3 μm.

  As a result, even if radio waves generated from the magnetron 13 are concentrated on the support ring 23 and the electric field strength may be increased, the overall width L is 2 mm or more in the pitch P26 between the support rings that is the distance between the support rings 23 and the shape. .9 mm or less, the support ring line pitch 25 a is 0.45 mm or more and 1.05 mm or less, the line pitch 25 b is 0.45 mm or more and 1.05 mm or less, and the line pitch 25 c is 0.3 mm or more and 0.9 mm or less. Therefore, the electric field intensity is dispersed between the lines, and abnormal light emission can be prevented.

Further, since infrared rays are radiated from one lamp heater 17 that transmits water vapor to the heating chamber 14, the food 11 placed in the heating chamber 14 can be directly and evenly heated, and the infrared rays are directly applied to the surface of the food 11. The temperature is quickly transmitted to the inside of the food, and when the far infrared rays are radiated from the two Miraclone heaters 18 provided on both sides of the lamp heater 17, the surface of the food 11 can be crisp and quickly burnt. Become.

  As described above, in the present embodiment, the configuration is such that the two antennas 6 are rotated to radiate microwaves, but the same effect can also be exhibited by a configuration in which one antenna 6 is rotated to radiate microwaves. Moreover, even if it is the structure which does not generate | occur | produce a microwave, the same effect can be exhibited regarding the heating effect by the infrared rays of the lamp heater 17 from the top, and the far infrared rays of the miraclon heater 18 from the top.

  Furthermore, the lamp heater 17 has a wavelength having a peak at 1.5 μm or more and 1.8 μm or less, but the lamp heater radiates a wavelength of 2.0 μm or more and 2.3 μm or less or 3.4 μm or more and 4.5 μm or less. The same effect can also be exhibited as 16.

  Further, the case where one lamp heater 17 and two miraclon heaters 18 are used has been described. However, the same effect can be obtained by using two or more lamp heaters 17 and three or more miraclon heaters 18. I can do it.

  As described above, according to the present invention, it is possible to uniformly heat the object to be heated by radiating infrared and far-infrared wavelengths that transmit water vapor, so that a microwave oven and oven as a cooking utensil using microwaves It can be applied to heating, thawing devices for various ranges, dielectrics, heating devices in industrial fields such as drying devices, ceramics heating, sintering or biochemical reactions.

Sectional drawing which looked at the heating cooking apparatus of Embodiment 1 of this invention from the side surface Cross-sectional configuration diagram seen from the front of the cooking device Configuration diagram of lamp heater (infrared ray generating means) of the cooking device Front view of the main part of the support ring of the lamp heater Front view of the main part of the support ring of the lamp heater Configuration diagram of the support ring of the lamp heater Characteristic chart showing water vapor absorption rate against light wavelength Sectional view seen from the side of a conventional cooking device

11 Food (Heating object)
Reference Signs List 13 Microwave generator 14 Heating chamber 17 Infrared generator 20 Quartz tube 21 Inert gas 22 Light emitter (filament)
23 Support rings 25a, 25b, 25c Line pitch L Full width P Support ring pitch

Claims (3)

A heating chamber for heating an object to be heated;
Microwave generating means for generating microwaves to be supplied to the heating chamber;
Tubular infrared ray generating means for radiating infrared rays to the object to be heated provided in the upper part of the heating chamber;
A quartz tube of a tubular portion of the infrared ray generating means;
An inert gas sealed in the quartz tube;
A coiled or linear filament installed in the quartz tube;
A plurality of support rings that are coiled to support the filament so as to be positioned at the approximate center of the quartz tube in the quartz tube and are formed of the same material as the filament;
The support ring includes a bundling portion bundled with the filament, a coil-shaped ring portion that is continuous from the bundling portion and is wound not less than 3.1 times and not more than 3.4 times so as to contact the inner surface of the quartz tube, and the bundling The first, second, and third line pitches are provided in this order from the part side, the first line pitch is 0.45 mm to 1.05 mm, and the second line pitch is 0.45 mm to 1 .05 mm or less, and the third cooking apparatus has a pitch between 0.3 mm and 0.9 mm . The cooking device according to claim 1, wherein the entire width of the ring portion of the support ring is 2.0 mm or more and 3.9 mm or less. The cooking device according to claim 1 or 2, wherein ten support rings are provided, and a pitch between the support rings is about 33 mm.