JP7320424B2 - heating cooker - Google Patents

Description

TECHNICAL FIELD The present invention relates to a heating cooker provided with upper and lower double-sided grills in a gas stove.

Gas stoves use a gas burner that burns fuel gas as a heat source for the stove part, so a double-sided grill provided on a gas stove uses gas burners for the upper and lower heat sources (for example, Patent Documents 4 and 5 etc). On the other hand, the electromagnetic induction heating type IH stove uses an electromagnetic induction heating type heating coil that is electrically driven as the heating source of the stove part. An electric heater is used, for example, an electromagnetic induction heating coil is used as the lower heating source, and an electric heater is used as the upper heating source (eg, Patent Documents 1, 2, 3, etc.).

JP 2010-267422 A JP 2016-189245 A JP 2018-67413 A JP 2014-119243 A JP 2019-162356 A Japanese Patent Application Laid-Open No. 2002-190376

In the double-sided grill of the gas stove as described above, the gas burner constituting the lower heating source occupies a relatively large space in the grill chamber, so the vertical effective space in the grill chamber tends to be narrow. As a result, the distance between the object to be heated such as foodstuffs and the gas burner of the upper heating source becomes short, and there is a risk that the upper surface of the object to be heated may be scorched more than necessary. In addition, on the inner surface of the grill chamber, the portion constituting the gas burner of the lower heating source was uneven, and the inside of the grill chamber was not easy to clean.

On the other hand, in the IH stove, the power of the heating source is limited in order to prevent the power breaker from operating due to an increase in the total power consumption when the stove and the grill are used simultaneously (for example, Patent Document 6). Therefore, the double-sided grill of the IH stove has weaker heating power and longer cooking time than those using a gas burner as a heating source, making it difficult to cook efficiently.

The present invention has been made in view of the above circumstances, and in a double-sided grill for a gas stove, it is possible to expand the space in the grill chamber, particularly to secure the vertical distance in the grill chamber, and To provide a heating cooker capable of improving the cleanability of the inside of a grill chamber, enabling the grill to be used without problems even when used simultaneously with a stove part, and improving the efficiency of cooking. and

The heating cooker according to the present invention is
A heating cooker comprising a gas stove and upper and lower double-sided grills,
The heating source above the grill is a gas burner,
The heating source under the grill is an electromagnetic induction heating coil (hereinafter sometimes referred to as " IH coil " ) driven by a commercial power supply ,
a cooling means for cooling the components of the heating coil with air;
a duct for guiding the cooled air into a grill chamber in which the gas burner is disposed;
When the side on which the grill door is provided is the front side of the grill storage, the ducts are provided on the left and right sides of the grill storage and extend in the front-rear direction and the vertical direction of the grill storage to extend to the left and right of the grill storage. A ventilation port provided in the upper part of the side wall plate communicates with the inside of the grill chamber.
The heating cooker is
An air passage is provided in the lower part of the grill storage,
An extension passage of the air passage is provided at the bottom of the grill chamber,
the duct is connected to the air passage;
A control board, which is a component of the heating coil, and a cooling fan, which is the cooling means, are provided in the air passage,
The heating coil may be arranged in the extension passage.

In the above configuration, the heating source under the grill is an IH coil. Since the IH coil is configured in a flat shape, the bottom space in the grilling chamber is widened, and the vertical effective space in the grilling chamber can be expanded. Therefore, a wide distance can be secured between the object to be heated stored in the grill chamber and the gas burner of the upper heating source, and the upper surface of the object to be heated can be prevented from being scorched. By widening the upper and lower spaces in the grill chamber, it is possible to easily accommodate large-sized objects to be heated and deep-bottomed cooking containers, thereby expanding the range of cooking. In addition, the bottom surface of the inside of the grill can be made flat, and the cleaning of the inside of the grill can be greatly improved. In addition, the IH coil, which is the heating source under the grill, is used in a gas stove that uses a gas burner as a main heating source, not in an IH stove that requires a large total amount of power when used simultaneously with the stove. Therefore, even when the gas stove part and the grill are used simultaneously, there is no need to limit the power of the commercial power source for driving the IH coil, which is the heating source under the grill. Therefore, even when used simultaneously with the stove part, the heating power of the heating source under the grill can be used without being restricted, so that cooking on the grill can be efficiently performed, and usability for the user is improved. .

Further, in the above configuration, the heating source above the grill is a gas burner. As a result, compared to an electric heating source such as an electric heater, it is possible to heat the food more quickly and strongly, thereby shortening the cooking time. In addition, even in the event of a power failure, if the gas supply is not interrupted, the gas burner of the upper heating source can be used for cooking, which is convenient for the user.

According to the above configuration, the cooling means is provided for cooling the components of the heating coil with air, thereby suppressing the thermal influence of the components of the heating coil in the grill chamber. Even if it becomes, it is possible to prevent the output reduction and failure of the IH coil used as the lower heating source.

According to the above configuration, there is provided a duct for guiding the air after cooling into the inside of the grill chamber in which the gas burner is disposed , and the duct is provided at the upper part of the left and right side wall plates of the grill chamber. Since it communicates with the inside of the refrigerator , the air after cooling can be used as secondary air for the gas burner, which is the upper heating source, and the heating efficiency of the gas burner can be improved. Therefore, the cooking performance of the grill can be maintained at a higher level.

1 is a cross-sectional view showing the configuration of a gas stove equipped with a double-sided grill as a cooking device according to an embodiment; FIG. It is a sectional view showing the composition of the grill in an embodiment. FIG. 4 is a top view showing the inside of the grill chamber of the grill in the embodiment;

EMBODIMENT OF THE INVENTION Below, it demonstrates, referring drawings for embodiment of this invention.
The heating cooker of the embodiment is a gas stove provided with a grill for both upper and lower sides. As shown in FIG. 1, this gas stove 1 is of a built-in type. In this manner, a top plate 12 arranged on the countertop 2, a stove part 13 provided on the top plate 12, and a grill 3 incorporated in the body case 11 are provided.

The stove part 13 is provided with a trivet 14 on which cooking utensils such as pots are placed, and a gas burner 15 for burning fuel gas as a heating source for heating the cooking utensils.

The grill 3, also referring to FIG. A lower heating source 33 is provided at the bottom of the chamber 31, and the food 4 is heated and cooked from both sides. The grill chamber 31 is formed in a rectangular box shape with an open front and an exhaust pipe 34 at the rear. A front opening of the grill chamber 31 is provided with a grill door 35 for freely opening and closing the front opening.

The upper heating source 32 is composed of a gas burner 32a that burns fuel gas. The gas burner 32a is a sheet metal gas burner 32a formed by overlapping metal plates such as stainless steel, and the burner portion is divided into left and right from the rear side of the grill chamber 31 and formed in a U shape extending in the front and back direction. It is The gas burner 32a of the upper heating source 32 is not limited to a gas burner made of sheet metal, and a surface combustion infrared burner having a combustion plate formed of a flat ceramic plate having a large number of flame holes may be used. good too.

The lower heating source 33 is composed of an electromagnetic induction heating type heating coil (hereinafter referred to as "IH coil") 33a. The bottom plate 36 of the grill chamber 31 has high heat resistance and high insulation properties, and is composed of a flat glass plate or the like that is not heated by electromagnetic induction. . A control board 6 (see FIG. 2) is provided outside the grill chamber 31 at the bottom of the grill 3. The control board 6 is provided with a driving circuit for supplying a high-frequency current for electromagnetic induction heating to the IH coil 33a. A control circuit or the like is provided for controlling the output of the circuit or drive circuit. Power is supplied to the control board 6 from a commercial power source (not shown).

The cooking container 5 is placed on the bottom plate 36 in the grill chamber 31 with the foodstuff 4 placed therein. This cooking vessel 5 is provided with a magnetic body 51 that is induction-heated by an IH coil 33a. The cooking container 5 is made of a material with high thermal conductivity such as aluminum, and has a magnetic body 51 such as iron or stainless steel embedded in the bottom. Although the cooking container 5 is a deep pot in the embodiment, it is not limited to this, and various types of containers such as a shallow pot, a plate, a dutch oven with a lid, etc. can be used according to cooking.

As described above, according to the grill 3 of the present embodiment, the lower heating source 33 is composed of the IH coil 33a. Since the IH coil 33a is configured in a flat plate shape, and the bottom plate 36 of the grilling chamber 31 can be formed in a flat shape, the bottom space in the grilling chamber 31 is widened, and the vertical effective space in the grilling chamber 31 is increased. can be expanded. As a result, it is possible to secure a wide distance between the food 4 placed in the cooking container 5 and housed in the grill chamber 31 and the gas burner 32a of the upper heating source 32, and the upper surface of the food 4 is not scorched more than necessary. can be made to avoid By widening the vertical space in the grill chamber 31, it becomes possible to easily accommodate a large-sized food material 4 such as roast chicken, a tall cooking container 5, etc., and to expand the range of cooking. In addition, the bottom surface 31a in the grill chamber 31 can be configured flat, and the left and right sides 31b and 31c in the grill chamber 31 can also be configured to be flat without unevenness, so the inside of the grill chamber 31 can be cleaned easily. improves markedly. In addition, the IH coil 33a of the lower heating source 33 is not an IH stove that requires a large total amount of electric power when used simultaneously with the stove section 13. 32a is used in the gas stove 1. Since the gas stove 1 is used, the total power consumption when the stove part 13 and the IH coil 33a of the lower heating source 33 of the grill 3 are used at the same time is unlikely to reach a value large enough to activate the power breaker in ordinary homes. I can say. Therefore, even when the grill 3 and the stove section 13 are used simultaneously, there is no need to limit the power of the commercial power supply for driving the IH coil 33a of the lower heating source 33. FIG. For example, if the maximum output of the IH coil 33a is about 1000 W, even if an AC 100 V power source is used as the commercial power source, power limitation is considered unnecessary. Therefore, even when the grill 3 and the stove part 13 are used at the same time, the heating power of the lower heating source 33 by the IH coil 33a can be used without being restricted, so that cooking on the grill 3 can be efficiently performed. , user convenience is improved.

Further, according to the grill 3 of this embodiment, the upper heating source 32 is composed of the gas burner 32a. As a result, compared to an electric heating source such as an electric heater, it is possible to heat the food more quickly and strongly, thereby shortening the cooking time. In addition, even during a power outage, if the gas supply is not stopped, the gas burner 32a of the upper heating source 32 can be burned using a dry battery for backup to the electrical system of the gas stove 1, and the user can cook. is easy to use.

In addition, as shown in FIG. 2, the grill 3 in the embodiment is provided with a cooling fan (cooling means) 7 for cooling the control board 6 of the IH coil 33a with air. That is, an air passage 8 is formed outside the left side wall plate 37a in the lower portion of the grill chamber 31, and the control board 6 is arranged in this air passage 8 in the embodiment. A cooling fan 7 is provided in the air passage 8 upstream of the mounting position of the control board 6 . The upstream end of the air passage 8 communicates with the space inside the body case 11 of the gas stove 1 . By driving the cooling fan 7, outside air (indicated by white arrows in FIG. 2) is drawn into the air passage 8 through the space in the main body case 11 of the gas stove 1 and circulated. is configured to cool the As a result, when the grill 3 is in use, the heat effect in the grill chamber 31 on the control board 6 can be mitigated, and even if the inside of the grill chamber 31 becomes hot, the output of the IH coil 33a of the lower heating source 33 does not decrease or malfunction. can be prevented.

The air passage 8 is provided with an extension passage 8 b formed at the bottom of the grill chamber 31 . An IH coil 33a disposed at the bottom of the grill chamber 31 is fitted and installed on the upper surface of the extension passage 8b. As a result, by driving the cooling fan 7, air can be circulated inside the extension passage 8b to cool the IH coil 33a, and the IH coil 33a can be It is possible to alleviate the influence of the heat received from the IH coil 33a, and prevent the IH coil 33a from lowering its output and from being damaged.

Further, ducts 9R and 9L are connected to the left and right sides of the air passage 8 including the extension passage 8b so as to communicate with the inside of the grill chamber 31 above the left and right side wall plates 37a and 37b of the grill chamber 31 . The left and right ducts 9R, 9L are configured to guide the air after cooling the control board 6 and the IH coil 33a to the upper vents 91R, 91L in the grill chamber 31 in which the gas burner 32a of the upper heating source 32 is arranged. It is As a result, referring also to FIG. 3, warm air after cooling is introduced substantially equally from the left and right air vents 91R and 91L in the upper part of the grill chamber 31 through the left and right ducts 9R and 9L, and this air is used as the upper heating source. 32 can be used as secondary air for the gas burner 32a having burner portions on the left and right sides, and the heating efficiency of the gas burner 32a can be improved. Therefore, the cooking performance of the grill 3 can be maintained at a higher level.

Further, the grill 3 in the embodiment is provided with a temperature sensor 38 (see FIG. 1) for detecting the temperature inside the grill chamber 31 on the rear wall plate 37c inside the grill chamber 31 . When the temperature inside the grill chamber 31 detected by the temperature sensor 38 exceeds a predetermined use prohibition temperature, the use of the upper and lower heating sources 32 and 33 is prohibited to prevent the inside of the grill chamber 31 from overheating. For example, after the heating of the upper and lower heating sources 33 is stopped due to the completion of cooking, while the temperature in the grill chamber 31 exceeds the prohibition temperature, the gas burner 32a of the upper heating source 32 is ignited and the IH coil 33a of the lower heating source 33 is is prohibited from being driven, and the grill 3 cannot start heating.

In this embodiment, the cooling fan 7 for cooling the control board 6 and the IH coil 33a is operated for a certain period of time even after the heating of the upper and lower heating sources 32 and 33 is stopped due to the completion of cooking, so that the outside air is supplied to the inside of the grill chamber 31. It is configured to cool the inside of the grill chamber 31 by introducing it. As a result, after using the grill 3 that has completed cooking, the temperature in the grill chamber 31 can be quickly lowered to the prohibition temperature or less, so that the grill 3 can be used continuously, and after one cooking is finished, the next one can be started. Cooking can be done quickly, and usability for the user is improved. In addition, the temperature of the grill door 35, the handle of the cooking vessel 5, etc. can be lowered quickly after cooking is completed, and the user can be prevented from feeling hot and uncomfortable when touching the grill door 35, etc.

It should be noted that the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the claims.

1 gas stove 2 counter top 3 grill 4 ingredients (to be heated)
5 Cooking container 6 Control board 7 Cooling fan (cooling means)
8 Air passage 8b Extension passages 9R, 9L Duct 11 Main body case 12 Top plate 13 Stove section 14 Trivet 15 Gas burner 31 Grill chamber 31a Bottom surface 31b Right surface 31c Left surface 32 Upper heat source 32a Gas burner 33 Lower heat source 33a IH coil 34 Exhaust pipe 35 Grill Door 36 Bottom plate 37a Right wall plate 37b Left side plate 37c Rear wall plate 38 Temperature sensor 51 Magnetic bodies 91R, 91L Air vent

Claims (2)

A heating cooker comprising a gas stove and upper and lower double-sided grills,
The heating source above the grill is a gas burner,
The heating source under the grill is an electromagnetic induction heating coil driven by a commercial power supply,
a cooling means for cooling the components of the heating coil with air;
a duct for guiding the cooled air into a grill chamber in which the gas burner is disposed;
When the side on which the grill door is provided is the front side of the grill storage, the ducts are provided on the left and right sides of the grill storage and extend in the front-rear direction and the vertical direction of the grill storage to extend to the left and right of the grill storage. A heating cooker comprising a structure that communicates with the inside of the grill chamber through a vent provided in the upper part of a side wall plate . In the heating cooker according to claim 1,
An air passage is provided in the lower part of the grill storage,
An extension passage of the air passage is provided at the bottom of the grill chamber,
the duct is connected to the air passage;
A control board, which is a component of the heating coil, and a cooling fan, which is the cooling means, are provided in the air passage,
A heating cooker in which the heating coil is arranged in the extension passage .

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