JP2004316999A - Cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooker for efficiently putting steam in a superheated state, and superior in cleaning performance. <P>SOLUTION: This cooker has a heating chamber 1, a convection chamber 2 having a convection fan 3 for generating a circulating wind in the heating chamber 1 and a convection heater 4 arranged so as to enclose the convection fan 3, and heating the circulating wind, a suction port 6, a blowout port 7 arranged in a back face part 1a being a boundary wall between the heating chamber 1 and the convection chamber 2, and communicating the heating chamber 1 with the convection chamber 2, and a steam generating vessel 10 for generating steam supplied in the heating chamber 1. The steam generating vessel 10 is arranged in the vicinity of the suction port 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a heating cooking device that performs cooking using superheated steam.
[0002]
[Prior art]
In a conventional heating cooking device, an evaporating container made of a low-dielectric-constant material is detachably provided at an outlet of a waveguide for guiding microwaves into an oven chamber, and microwave heating in the steam container is performed by dielectric heating. Water is evaporated to generate steam, and further heated by a heater that heats the oven wall to generate superheated steam (see Patent Document 1).
[0003]
[Patent Document 1]
JP 2001-355843 A (pages 3-4, FIG. 1)
[0004]
[Problems to be solved by the invention]
In a conventional heating cooking device, the generated steam is circulated by a blower and is superheated by a heater via a storage wall, so that there is a problem that heat exchange between the heater and the steam is difficult to be performed efficiently.
[0005]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a heating and cooking apparatus that can increase the efficiency of heat exchange between generated steam and a heater.
[0006]
[Means for Solving the Problems]
In the heating cooking device according to the present invention, a heating chamber, a convection chamber having a convection fan that generates circulating air in the heating chamber, and a convection heater that is disposed to surround the convection fan and heats the circulating air, An inlet and an outlet provided on a boundary wall between the heating chamber and the convection chamber and communicating the heating chamber and the convection chamber, and a steam generation container for generating steam to be supplied to the heating chamber, A steam generation container is provided near the suction port.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
FIG. 1 is a cross-sectional view of a heating cooking device according to Embodiment 1 of the present invention, FIG. 2 is a front view showing a rear portion of a heating chamber of the heating cooking device, and FIG. FIG. 4 is a main part front view showing the vicinity of an opening of a heating chamber of the heating cooking device, and FIG. 5 is an operation flowchart. In the figure, a convection chamber 2 is attached to the back 1a of the heating chamber 1, and a convection fan 3 is installed at the center thereof. The convection fan 3 is driven by a motor 4 provided outside the convection chamber 2.
[0008]
In the convection chamber 2, a convection heater 5 is provided so as to surround the convection fan 3. A suction port 6 and an air outlet 7 communicating with the heating chamber 1 and the convection chamber 2 are provided on a back surface 1a which is a boundary wall between the heating chamber 1 and the convection chamber 2. When the convection fan 3 is driven, the inside of the heating chamber 1 is opened. Air flows into the convection chamber 2 from the suction port 6 and returns to the heating chamber 1 from the outlet 7. The suction port 6 is provided at a position facing the center of the convection fan 3, and the outlet 7 is provided outside the tip of the convection fan 3. Note that arrows in FIG. 3 indicate air paths of circulating wind generated by the convection fan 3.
[0009]
In addition, an opening 8 is formed in the vicinity of the suction port 6 on the back surface portion 1a of the heating chamber 1 and at a position where the suction port 6 and the air outlet 7 are not closed, and the opening 8 is formed on the convection fan chamber 2 side. A support 9 is provided. A steam generation container 10 is detachably mounted on the support portion 9. Water pumped from a pump (not shown) is dropped into the steam generation container 10 via a water supply port 11.
[0010]
With the above configuration, the steam generation container 10 is heated by the combined heat transfer of the convection heater 5, and the dropped water becomes steam. Since the convection heater 5 has a high surface temperature exceeding, for example, 600 ° C., the generated steam is subjected to heat exchange in the convection heater 5 and is heated from about 100 ° C. at the time of generation to 170 ° C. or more to become superheated steam. Then, the superheated steam is sent from the outlet 7 into the heating chamber 1 while being guided by the circulating wind generated by the convection fan 3, and heats the object to be heated. By providing the steam generation container 10 in the circulation air passage, the heat exchange efficiency with the convection heater 5 can be increased. The superheated steam has a very high heating effect on the object to be heated, and the cooking time is dramatically improved.
[0011]
In addition, as shown in FIG. 1, by disposing the heating chamber 1 side of the steam generation container 10 without any step with the back surface 1 a of the heating chamber 1, when the inside of the heating chamber 1 is cleaned (for example, in the case of wiping cleaning), it is obstructive. There is no portion, and there is an effect that cleaning is easy.
[0012]
In addition, since the steam generation container 10 is detachably provided on the support portion 9, it can be removed from the heating chamber 1 side, and the scale can be easily cleaned.
[0013]
In other words, the steam generation container 10 is arranged on the convection chamber 2 side, the heating chamber 1 side is formed in a flat shape, and is detachable, so that the cleaning property in the heating chamber 1 is not impaired, and Cleanability can be improved.
[0014]
On the other hand, when the removal of the steam generation container 10 is performed after the completion of cooking, since the steam generation container 10 is in a high heat state, it is necessary to perform attachment / detachment and cleaning after cooling the steam generation container 10. Next, an example of an operation of removing the steam generation container 10 from the heating chamber 1 will be described with reference to FIG.
[0015]
After the cooking is completed, for example, it is determined whether or not the temperature of the steam generation container 10 is equal to or higher than a predetermined value by temperature detection means (not shown) provided in the steam generation container 10 (S1). When the temperature equal to or higher than the predetermined value is detected, the convection fan 3 is rotated (S2) to cool the temperature until the temperature becomes equal to or lower than the predetermined value. Further, when it is detected that the door (not shown) of the heating chamber 1 is opened during the cooling step (S3), it is determined that there is a possibility that the steam generation container 10 may be removed, and the notification means (not shown) uses the notification means (not shown). Attention is given such as prohibition of attachment / detachment and "high temperature caution" (S4), and rotation of the convection fan 3 is stopped (S5). The notification means uses a display device or a notification sound device used in a general heating cooking device, and is not particularly limited.
[0016]
Also, in the flowchart, even when “inside temperature> predetermined value” and “elapsed time after the end of heating> predetermined value” in S1, an effect of alerting until a certain amount of cooling is performed can be obtained.
[0017]
According to the first embodiment, the steam generation container 10 is disposed in the airflow path of the circulating air flowing from the suction port 6 to the blowout port 7 and is provided near the suction port 6. And the convection heater 5 can reliably overheat. Then, the object to be heated can be efficiently cooked.
[0018]
Embodiment 2 FIG.
FIG. 6 is a cross-sectional view of the heating cooking device according to the second embodiment of the present invention, and FIG. 7 is a front view showing a rear portion of a heating chamber of the heating cooking device. Embodiment 2 shows an example in which the steam generation container is disposed immediately below the suction port. In the figure, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
[0019]
The steam generated by the combined heat transfer from the convection heater 5 flows into the convection chamber 2 without flowing to the heating chamber 1 because the steam generation container 10 is immediately below the suction port 7. Then, the steam sucked into the central portion of the convection fan 3 flows evenly in the direction of the outlet 7 due to the rotational force of the convection fan 3. Therefore, the entire convection heater 5 can be efficiently heated.
[0020]
Embodiment 3 FIG.
FIG. 8 is a cross-sectional view of the heating cooking device according to the third embodiment of the present invention, and FIG. 9 is a front view illustrating a back portion of a heating chamber of the heating cooking device. Embodiment 3 shows an example in which a steam generation container is arranged near a convection heater. In the figure, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
[0021]
The steam generation container 10 is arranged so that a part thereof contacts the convection heater 5. The steam generation vessel 10 is directly heated by the convection heater 5 to generate steam. The generated steam flows into the convection chamber 2 without flowing to the heating chamber 1 side because the steam generation container 10 is immediately below the suction port 7. Then, the steam sucked into the central portion of the convection fan 3 flows evenly in the direction of the outlet 7 by the rotational force of the convection fan 3. Therefore, the entire convection heater 5 can be efficiently heated.
[0022]
According to the third embodiment, the steam generation container 10 is arranged so that at least a part thereof is in contact with the convection heater 5, so that the function of heating the circulating air and the function of heating the steam generation container are realized by one convection heater. It can be efficiently heated with a simple configuration, and the steam generation rate can be improved.
[0023]
Embodiment 4 FIG.
FIG. 10 is a cross-sectional view of a heating cooking device according to a fourth embodiment of the present invention, and FIG. 11 is a front view showing a back portion of a heating chamber of the heating cooking device. Embodiment 4 shows an example in which an auxiliary heater is provided in a steam generation container. In the figure, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. An auxiliary heater 12 is provided at a lower portion of the steam generation container 10, and reliably heats the steam generation container 10. With this configuration, the steam generation speed can be improved.
[0024]
Embodiment 5 FIG.
FIG. 12 is a cross-sectional view of a heating cooking device according to Embodiment 5 of the present invention, and FIG. 13 is a perspective view showing a steam generating container of the heating cooking device. Embodiment 5 shows a configuration in which the steam generation container 10 is wiped from the heating chamber 1 side without attaching / detaching. In the figure, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
[0025]
In the vicinity of the suction port 6 on the back surface portion 1a of the heating chamber 1, a concave portion 13 indicating a steam generation container with the heating chamber 1 side opened is formed. The recess 13 has a shape with a bulge on the lower side so that the dropped water does not spill, and a hole 14 for passing the water supply port 11 is formed on the side surface. The dropped water is vaporized by the combined heat transfer of the convection heater 5. Above the recess 13, a steam vapor exhaust port 15 for introducing steam into the convection chamber 2 is provided. The steam generated in the recess 13 is guided into the convection chamber 2 via the steam outlet 15 and is overheated.
[0026]
According to the fifth embodiment, since the concave portion 13 can be wiped from the inside of the heating chamber 1 without having to attach / detach the steam generation container, it is possible to improve the cleanability of the heating chamber.
[0027]
In each of the above-described embodiments, a high-frequency generator may be provided as a heat source of the object to be heated, in addition to the convection fan heater.
[0028]
【The invention's effect】
According to the present invention, since the steam generation container is provided near the suction port, the heat exchange efficiency between the generated steam and the convection heater can be improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a heating cooking device according to a first embodiment of the present invention.
FIG. 2 is a front view showing the rear part of the heating chamber of the cooking device.
FIG. 3 is an explanatory view showing a flow of a heating circulating wind of the heating cooking device.
FIG. 4 is a main part front view showing the vicinity of an opening of a heating chamber of the cooking device.
FIG. 5 is an operation flowchart of the same.
FIG. 6 is a cross-sectional view of the heating cooking device according to Embodiment 2 of the present invention.
FIG. 7 is a front view showing the back of the heating chamber of the cooking device.
FIG. 8 is a cross-sectional view of a heating cooking device according to Embodiment 3 of the present invention.
FIG. 9 is a front view showing the rear part of the heating chamber of the cooking device.
FIG. 10 is a cross-sectional view of a heating cooking device according to a fourth embodiment of the present invention.
FIG. 11 is a front view showing the back of the heating chamber of the cooking device.
FIG. 12 is a cross-sectional view of a heating cooking device according to a fifth embodiment of the present invention.
FIG. 13 is a perspective view showing a steam generation container of the cooking device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heating room, 1a back part, 2 convection room, 3 convection fan, 4 motor, 5 convection heater, 6 suction port, 7 outlet, 8 opening, 9 support part, 10 steam generation vessel, 11 water supply port, 12 auxiliary Heater, 13 recess (steam generating vessel), 14 holes, 15 steam outlet.

Claims (3)

A convection chamber having a heating chamber, a convection fan that generates circulating air in the heating chamber, and a convection heater disposed to surround the convection fan and heat the circulating air; and a boundary between the heating chamber and the convection chamber. An inlet and an outlet provided on a wall for communicating the heating chamber and the convection chamber, and a steam generating container for generating steam to be supplied to the heating chamber are provided, and the steam generating container is provided near the inlet. A cooking device characterized by the following. The cooking device according to claim 1, wherein the steam generation container is detachably provided. The heating cooking device according to claim 1, wherein at least a part of the steam generation container is arranged in the convection chamber and is brought into contact with a convection heater.

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