JP2005098601A - Cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to clearly observe the progress of heating of a food placed on an upper and lower saucer by bright illumination in a heating cooker in which the saucer can be installed in two upper and lower stages.
SOLUTION: In a heating cooker provided with a heating chamber 2 for storing food 1, and an upper tray 7a and a lower tray 7b that are arranged in the heating chamber 2 and have two upper and lower stages on which the food 1 is placed. The upper illumination window 16a for illuminating the food 1 of the upper tray 7a on the side wall surface of the heating chamber 2 between the ceiling 2a of the two and the upper tray 7a, and the side wall surface of the heating chamber 2 between the upper tray 7a and the lower tray 7b Are provided with lower illumination windows 16b for illuminating the food 1 in the lower tray 7b.
[Selection] Figure 2

Description

  The present invention relates to lighting for illuminating food on a saucer placed in two stages in a heating cooker.

  In a heating cooker, it is often the case that the heating status of food placed in a heating chamber is observed. In particular, foods that become hard if overheated in the first cooking, or foods in which water does not spill out of the bowl when boiled must be observed carefully.

  In addition, when baking a cookie, etc., when the mixing ratio of the ingredients such as sugar, flour, butter is the first time, it is necessary to closely watch the progress of heating so as not to burn too much.

  Therefore, it is necessary to be a bright heating chamber so that the heating chamber can be observed well. Under such circumstances, a patent document (Japanese Patent Laid-Open No. 2002-364857) discloses an upper tray having two upper and lower stages for placing food 52 in a heating chamber 51 of a heating cooker 50 as shown in FIG. 53a and a lower tray 53b, and an illumination lamp 54 that illuminates the food 52 of the tray 53 is provided on the rear wall surface above the heating chamber 51.

JP 2002-364857 A

  In the above prior art, since the illumination lamp 54 is provided on the rear wall surface above the heating chamber 51, the food 52 in the upper tray 53a is illuminated by the illumination lamp 54 and can be observed well. The food 52 of 53b is blocked by the illumination lamp 54 by the upper tray 53a.

  Therefore, since there is only a gap between the front tray 53a and the door 55, a rear portion of the heating chamber 51 and the rear wall of the heating chamber 51, and the lighting leaking from the side walls of the upper tray 53a and the heating chamber 51, the food 52 in the lower tray 53b is There was a problem of not being able to see well.

  The present invention has been made in order to solve the above-described problems, and includes a heating chamber for storing food, an upper heater provided on the upper outer side of the heating chamber, and upper and lower portions disposed in the heating chamber for placing food. A two-stage upper and lower trays, a food placing plate made of a dielectric material provided on the bottom surface of the heating chamber, on which food or the like can be placed, a magnetron for generating a high frequency, and a magnetron generated from the magnetron A rotating antenna for diffusing high frequency into the heating chamber and a gap whose upper surface shares the food mounting plate and whose bottom face is covered with a metal plate are provided in the gap. The rotating antenna and a guide for guiding the high frequency from the magnetron are provided in the gap. In the heating cooker provided with the wave section, an upper lighting window for illuminating food in the upper receiving tray is provided on the side wall surface of the heating chamber between the ceiling portion of the heating chamber and the upper receiving tray, and the heating chamber between the upper receiving tray and the lower receiving tray. To illuminate the food on the side tray It is provided with a lower illumination window, respectively.

  Also, an upper light source and a lower light source, which are light sources for illuminating the heating chamber, are provided in the vicinity of the upper illumination window and the lower illumination window, respectively.

  Further, when only one of the upper tray and the lower tray is used, the light source of either one of the illumination windows is turned off.

  Moreover, the light source of two illumination windows is comprised with one light source.

  With this structure, the food placed on the upper tray and the lower tray can be clearly seen in the trays placed in two stages, and the progress of the heating of the food can be seen well, so that the food can be heated without failure. Can do.

  The heating cooker according to the present invention includes a heating chamber for storing food, an upper heater provided on the upper outer side of the heating chamber, an upper tray and a lower tray that are arranged in the heating chamber and have two upper and lower stages on which food is placed. And a food placing plate made of a dielectric that is provided on the bottom surface of the heating chamber and on which food or the like can be placed, a magnetron that generates a high frequency, and a rotating antenna that diffuses the high frequency generated from the magnetron into the heating chamber And a heating cooker provided with a gap in which the upper surface shares the food placing plate and the bottom face is covered with a metal plate, and in which the rotating antenna and a waveguide section for guiding a high frequency from the magnetron are provided. Illuminate the upper side of the heating chamber on the side wall of the heating chamber between the ceiling of the heating chamber and the upper tray, and illuminate the food on the lower tray on the side wall of the heating chamber between the upper and lower trays. Under lighting windows for each of these By providing an upper light source and a lower light source, which are light sources that illuminate the heating chamber, in the vicinity of the upper and lower lighting windows, the food in the tray placed in two stages can be seen well in any of the dishes. The food heating status can be understood, and the food can be heated without failure.

  Further, when only one of the upper tray and the lower tray is used, turning off the light source of one of the illumination windows brings about an energy saving effect without using wasted electricity.

  Furthermore, by configuring the light sources of the two illumination windows as one light source, the number of light sources as electrical components is reduced from two to one, thereby reducing the component unit cost and assembly cost, thereby reducing the manufacturing cost. . In addition, the electricity bill can be reduced, resulting in an energy saving effect.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a side sectional view of a cooking device according to an embodiment of the present invention, and 1 is a food. Reference numeral 2 denotes a heating chamber for storing the food 1. Reference numeral 3 denotes an upper heater provided in the upper part of the heating chamber 2. Reference numeral 4 denotes a hot air device provided on the rear outer surface of the heating chamber 2, and a casing 4c constituting an outer cover of the hot air device 4, a hot air heater 4a provided on the upper side in the casing 4c, and a lower side. A fan 4b that is provided and blows out the wind, and hot air that blows into the heating chamber 2 and a guide 4d that partitions the air path of the hot air that returns from the heating chamber 2 are configured.

  Reference numeral 5 denotes an air outlet, which is composed of a large number of small holes and is provided on the rear wall surface of the heating chamber 2. Hot air generated in the hot air device 4 is blown out to the heating chamber 2 through the air blowing port 5. Reference numeral 6 denotes an air inlet, which is provided on the rear wall surface of the heating chamber 2 and is used to return hot air, which is formed of a large number of small holes and circulated through the heating chamber 2, to the hot air device 4.

  Reference numeral 7 denotes a tray on which the food 1 is placed when the heater is heated, and is composed of an upper tray 7a provided on the upper side and a lower tray 7b provided on the lower side. 8a is an upper shelf which is provided so as to protrude inside the left and right side surfaces of the heating chamber 2 and fixes the upper tray 7a. 8b is the same shape as the upper shelf 8a, and is a lower shelf which fixes the lower tray 7b.

  A food placing plate 9 is made of a dielectric and is fixed to the bottom of the heating chamber 2. A magnetron 10 generates a high frequency. Reference numeral 11 denotes a rotating antenna that diffuses high frequency so that the high frequency in the heating chamber 2 is uniform. A motor 12 rotates the rotating antenna 11.

  Reference numeral 13 denotes an air gap, which is provided with a rotating antenna 11, whose upper surface shares the food mounting plate 9 on the bottom surface of the heating chamber 2, and whose lower surface is covered with a metal plate 13a that blocks high frequency. Reference numeral 14 denotes a wave guide, which is provided below the metal plate 13a, to which the magnetron 10 is fixed. A central conductor 15 guides the high frequency generated from the magnetron 10 fixed to the waveguide 14 to the gap 13.

  The food placing plate 9 separates the heating chamber 2 from the gap 13 provided with the rotating antenna 11 for stirring the high frequency. Depending on cooking, the food placing plate 9 is placed directly on the food placing plate 9. It plays an important role such as heating. Therefore, the material must be hygienic, heat resistant, have low dielectric loss, and be excellent in mechanical strength.

  An upper illumination window 16a is provided on the side wall surface of the heating chamber 2 between the ceiling portion 2a of the heating chamber 2 and the upper tray 7a. The upper illumination window 16a is formed of a large number of small holes through which light can easily pass and high frequencies do not leak from the heating chamber 2. A lower illumination window 16b is provided on the side wall surface of the heating chamber 2 between the upper tray 7a and the lower tray 7b. The lower illumination window 16b has the same small hole and shape as the upper illumination window 16a. The upper illumination window 16a and the lower illumination window 16b are collectively referred to as an illumination window 16.

  FIG. 2 is a partial cross-sectional view of the vicinity of the illumination window 16, and 17a is an upper light source that illuminates the food 1 of the upper tray 7a through the upper illumination window 16a. Reference numeral 17b denotes a lower light source that illuminates the food 1 in the lower tray 7b through the lower illumination window 16b. The upper light source 17a and the lower light source 17b are collectively referred to as a light source 17. The light source 17 uses an incandescent bulb in the present invention.

  Reference numeral 16a1 denotes a waterproof plate provided on the upper light source 17a side of the upper illumination window 16a. Reference numeral 16b1 denotes a waterproof plate provided on the lower light source 17b side of the lower illumination window 16b. These waterproof plates 16a1 and 16b1 are provided to prevent water vapor from the food 1 from leaking out of the heating chamber 2 during heating, and are made of transparent heat-resistant glass.

  Reference numeral 18 denotes an openable / closable door used when the food 1 is taken in and out of the heating chamber 2.

  Next, the operation of the present invention configured as described above will be described.

  When baking a cookie by an oven function which is one of the functions of a heating cooker, food (cookie) 1 is placed on the upper tray 7a, the door 18 is opened, and the upper shelf 8a is fixed. Similarly, the food (cookie) 1 is placed on the lower tray 7b and fixed to the lower shelf 8b. When the temperature of the heating chamber 2 is set and the heating is started, the upper heater 3, the hot air heater 4a, the fan 4b and the like are operated, and the hot air is blown from the blower port 5 to the heating chamber 2 to heat the food 1.

  Moreover, the upper light source 17a and the lower light source 17b are turned on simultaneously with the start of heating, and the foods placed on the upper tray 7a and the lower tray 7b from the upper illumination window 16a and the lower illumination window 16b provided on the wall surface of the heating chamber 2, respectively. Illuminate 1 Therefore, since the dedicated illumination window 16 is provided for each tray 7 and the light source 17 is also provided, it is possible to observe the heating progress of the food 1 well.

  In the above embodiment, two trays 7 are used. However, in the case of a grill function used when grilling fish or the like, only the upper heater 3 is used, so that only the upper tray 7a fixed to the upper shelf 8a has food 1 Place and heat. The under tray 7b is not used.

  Accordingly, the illumination from the lower illumination window 16b is unnecessary, and the lower light source 17b is stopped by turning off the switch 19 as shown in FIG.

  In the case of the microwave function, the food 1 is placed on the food placing plate 9 and the high frequency generated from the magnetron 10 enters the gap 13 through the waveguide 14 and is stirred by the rotating antenna 11 there. Since the food 1 is radiated and heated, like the grill function, the two light sources 17 are unnecessary and can be lit only by one side.

  FIG. 4 shows an example of a single light source 17 according to another embodiment of the present invention. In order to guide the light emitted from the light source 17 to the illumination window 16, it is provided so as to surround the light source 17 with the reflector 20. A lot of light is guided to the heating chamber 2 through the illumination window 16. As a result, the number of light sources 17 that are electrical components is reduced from two to one, so that the unit unit cost and assembly cost are reduced, and the manufacturing cost is reduced.

  Thus, even if the saucer 7 is used in two stages, the illumination window 16 is provided for each, so that the food 1 can be observed well in order to illuminate the food 1 in the saucer 7 with the illumination from here. The heating progress of 1 is known, problems such as overheating and underheating are solved, and the food 1 can be finished without failure.

It is side surface sectional drawing of the heating cooker in one Example of this invention. It is a fragmentary sectional view of the illumination window vicinity in FIG. It is an electric circuit diagram of the light source in this invention. FIG. 6 is a cross-sectional view of a configuration in the case where there is one light source in another embodiment of the present invention. It is side surface sectional drawing of the conventional heating cooker.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Food 2 ... Heating chamber 2a ... Ceiling part 7 ... Sauce pan 7a ... Upper saucer 7b ... Lower saucer 9 ... Food placing plate 10 ... Magnetron 11 ... Rotating antenna 13 ... Gap 13a ... Metal plate 14 ... Waveguide 16 ... Lighting window 16a ... Upper lighting window 16b ... Lower lighting window

Claims (4)

A heating chamber (2) for storing food (1), an upper heater (3) provided outside the upper portion of the heating chamber (2), and a food (1) placed inside the heating chamber (2). A food placing plate made of a dielectric provided on the bottom part of the upper and lower trays (7a) and (7b) and the heating chamber (2), on which the food (1) and the like can be placed. 9), a magnetron (10) for generating a high frequency, a rotating antenna (11) for diffusing the high frequency generated from the magnetron (10) into the heating chamber (2), and the food placing plate (9) on the upper surface. A gap (13) that is shared and whose bottom is covered with a metal plate (13a) is provided, and the rotating antenna (11) and a waveguide (14) that guides a high frequency from the magnetron (10) to the gap (13). ) Provided with a ceiling portion (2a) and an upper tray (7) of the heating chamber (2). ), The upper illumination window (16a) for illuminating the food (1) of the upper tray (7a) on the side wall surface of the heating chamber (2), and the heating chamber between the upper tray (7a) and the lower tray (7b). A heating cooker characterized in that a lower illumination window (16b) for illuminating the food (1) of the lower tray (7b) is provided on the side wall surface of (2). An upper light source (17a) and a lower light source (17b) as light sources for illuminating the inside of the heating chamber (2) are provided in the vicinity of the upper illumination window (16a) and the lower illumination window (16b), respectively. Item 1. A cooking device according to item 1. The light source (17) of any one of the illumination windows (16) is turned off when only one of the upper tray (7a) and the lower tray (7b) is used. 1. The heating cooker according to claim 2. The cooking device according to claim 1, characterized in that the light sources (17) of the two illumination windows (16) are constituted by one light source (17).

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