JP2000046335A - Grill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize combustion flame of a flame transfer pilot burner in a both-sided oven grill by forming a flame transfer chamber such that combustion exhaust gas does not flow in from a heating chamber and arranging the flame transfer pilot burner in the flame transfer chamber while facing upper and lower burners to the flame transfer chamber such that flame can be transferred. SOLUTION: An exhaust chamber 17 having an exhaust opening 39 opening upward is defined by providing a partition wall 40 in the rear center of a heating chamber 7 and a flame transfer chamber 15 having upper part communicating with the exhaust opening 39 is disposed on the opposite sides of the exhaust chamber 17. At the time of igniting operation, fuel gas at the flame transfer pilot burner 32a of the flame transfer chamber 15a is fired by a discharge electrode 42. After the flame is transferred to an upper burner 30 on one side and to a lower burner 31 on the other side, the flame is transferred from the lower burner 31 through the pilot burner 32 to the upper burner 30. Combustion flame of the upper and lower burners 30, 31 is transferred through a barrier wall 2 to the combustion face in the heating chamber 7 thence to the entire grill burner thus starting combustion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grill for heating an object such as fish in a heating cabinet.

[0002]

2. Description of the Related Art Conventionally, a gas table stove, which is a heating cooker, is of a type having a grill capable of heating and cooking an object to be cooked such as a fish. These grills consist of a grill on which the food is placed, a saucer that slides out with the grill on the grill, a burner that burns fuel gas to heat the food, and a heating cabinet that holds these. Is done.

[0003] In addition, grills that can be cooked in an oven-like manner can be used to cook not only grilled fish, but also frozen foods such as gratin and pizza, as well as re-heated tempura and fried foods. Rarely, a wide grill with a large baking area is desired so that many foods can be heated and cooked at once. For this reason, the present applicant eliminates the uneven temperature caused by the widening of the grill, and wraps the cooking object in combustion exhaust gas using convection heat so as to perform oven-like heating cooking. Has filed an application for a grill. That is, as shown in FIG.
In this grill, the burner 13a is inclined slightly upward so that the combustion flame does not directly radiate the object to be cooked, and an exhaust port 17 for discharging the combustion exhaust gas below the grill 9 is provided on the left and right wall surfaces of the heating cabinet 7. The high-temperature combustion exhaust gas is stored in the heating chamber 7 to cook the object 12 to be cooked. The burner 13a is an all-primary-air burner having a combustion surface formed by penetrating a large number of small flame openings in a flat plate made of porous ceramics. Is maintained well.

[0004]

However, in the case of a double-sided grill, in which a burner is also provided at the lower stage of the heating chamber and the heating is also performed from the back side of the object to be cooked, a fire transfer pilot burner for transferring heat to the upper and lower burners is used. There was a problem that the combustion flame lifted or extinguished the fire. This is a Bunsen burner that requires secondary air because the pilot burner that transfers heat to the upper and lower burners is fired. This is because combustion becomes unstable. On the other hand, in the case of a fire pilot burner, a Bunsen burner has a longer combustion flame and is easier to fire. Therefore,
The grill of the present invention solves the above-mentioned problems, and stabilizes the combustion flame of a fire transfer pilot burner and does not impair the fire transfer ability even with a double-sided grill that heats and cooks by storing combustion exhaust gas in a heating chamber. The purpose is to be.

[0005]

According to a first aspect of the present invention, there is provided a grill for accommodating an object to be cooked for heating and cooking, and burning fuel gas in an upper stage of the heating oven. An all-primary pneumatic upper burner, a lower burner for burning fuel gas in the lower stage of the heating chamber, a fire transfer pilot burner for performing a fire between the upper burner and the lower burner, and communicating with the heating chamber. An exhaust chamber for discharging combustion exhaust gas and a grate placed in the middle of the heating chamber between the upper burner and the lower burner for placing the object to be cooked, and the combustion exhaust gas is provided above the heating chamber. A double-sided grill that discharges combustion exhaust gas overflowing from the heating chamber into the exhaust chamber while heating the object to be heated by convection heat generated by the combustion exhaust gas, and heats the object to be cooked from below by the combustion heat of the lower burner. In the above A fire transfer chamber is formed so that the combustion exhaust gas of the storage does not flow in, the fire transfer pilot burner is disposed in the fire transfer chamber, and the upper burner and the lower burner are fire accessible to the fire transfer chamber. The gist is that you have not done so.

According to a second aspect of the present invention, there is provided a grill according to the first aspect, wherein an electrode for igniting the first pilot burner is disposed in the first chamber. I do.

[0007] In the grill according to the first aspect of the present invention having the above structure, the fire is transferred to an upper burner and a lower burner in a heating chamber by a fire transfer pilot burner arranged in a fire transfer chamber. In this case, a sufficient amount of air is supplied to the fire transfer chamber by the draft force of the combustion exhaust gas by the fire transfer pilot burner, and the combustion exhaust gas in the heating chamber hardly flows into the fire transfer chamber.
Fire transfer pilot burners do not lift or extinguish. Therefore, even with a double-sided grill that heats the combustion exhaust gas while keeping it in the upper part of the heating chamber, the fire transfer pilot burner does not impair the fire transfer ability.

[0008] Further, the present invention has the above-mentioned structure.
In the grill according to the present invention, in the grill according to the first aspect, a sufficient supply of air to the fire transfer chamber is performed by a draft force of the combustion exhaust gas, and the combustion exhaust gas from the heating chamber hardly flows into the fire transfer chamber. But does not lift or extinguish fire. Therefore, even in the case of a double-side grill that heats the combustion exhaust gas while retaining it in the upper portion of the heating chamber, the fire transfer pilot burner is reliably ignited.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of the grill of the present invention will be described below. FIG. 6 is an external view of a table stove provided with a grill for double-sided baking. Table stove has two sets of stove burners 4 on top plate 3
a, 4b are provided, and a cooking pot (not shown) is placed on 5a, 5b as provided around them, and operation buttons 20a, 20b provided on the front surface of the table stove 1 are depressed. The filter burners 4a and 4b are ignited, and the cooking pot on 5 is heated as in the case of FIG.

In addition, between the burner burners 4a and 4b,
A grill 1 for grilling fish and the like is provided.
Press c to perform cooking. The grill 1 includes a heating cabinet 7 provided on a gas table stove and heats and cooks fish and the like in the heating cabinet 7. As shown in FIG. 2 to FIG. 5, inside the heating cabinet 7, a surface combustion type upper burner 30 a and an upper burner 30 b (hereinafter, these are distinguished from each other) in which fuel gas is burned to the upper left and right sides to heat the object 12 to be cooked If not, simply call it "upper burner 30").
2, a tray 10 that can be slid out and pulled out with the grill 9 placed on the lower tier, and lower burners 31a and 31b on the left and right sides of the lower tier (hereinafter simply referred to as " Lower burner 31 "). (If the upper burner 30 and the lower burner 31 are not distinguished, they are simply referred to as “grill burners”.)

At the rear center of the heating chamber 7, there is provided an exhaust chamber 17 provided with an exhaust port 39 which is juxtaposed via a partition wall 40 and is open upward.
A communication port 16 that communicates with the communication port is provided. In addition, the communication port 16
Is provided such that the upper end of the opening is lower than the upper burner 30 and slightly higher than the mounting surface of the object 12 on the grill 9. On the left and right sides of the exhaust chamber 17, a fire transfer chamber 15 described later is provided, and an upper portion of the fire transfer chamber 15 communicates with an exhaust port 39 of the exhaust chamber 17.

At the center of the front of the heating cabinet 7, a pan 1
A handle 6 that is integrally fixed with the tray 0 and pulls the tray 10 forward, and an opening / closing door 8 that opens and closes in conjunction with pulling the tray 10 are provided, and the opening / closing door 8 is provided with a glass viewing window 8a. Can be When the handle 6 is pulled out to the front, the pan 10 fixed to the handle 6 slides on the bottom surface of the heating chamber 7 and the grill 9 placed on the pan 10 is simultaneously pulled out. In addition, a gap through which external air can enter is provided on the bottom surface of the heating chamber 7.

As shown in FIG. 1, a push-push mechanism (not shown) for alternately determining the position of the operation button 20 for ignition and for extinguishing the fire is provided for the operation button 20 which advances and retreats by pressing. Can be (Note that, since FIG. 1 is an explanatory diagram schematically shown, the fire transfer pilot burner 32, the upper burner 30, and the lower burner 31 provided on the left and right sides of the heating chamber 7 are represented by one, and the adjacent fire transfer chamber 15 and the exhaust chamber This push-push mechanism locks the operation button 20 at the intermediate position (combustion position) when the operation button 20 is pushed down to the end position during the ignition operation and then released. The operation button 20 is provided so as to return to the start position (stop position) by the fire extinguishing operation by the pressing operation again. In addition, an ignition switch 22 that is turned on / off in conjunction with the advance / retreat of the operation button 20 is provided near the operation button 20. The ignition switch 22 is turned ON only at the end position by the operation button 20.
The igniter 14 that generates a high voltage for ignition by operating N is operated, and is provided at a position where the intermediate position and the start position are turned off.

The gas supply path to the grill burner is opened from the upstream side by the pressing force of the operation button 20 during the ignition operation, and is opened and held by the thermoelectromotive force of the thermocouple 41; The gas passage is opened to the grill burner in conjunction with the instrument plug 19 which opens the gas passage at the time of the ignition operation and is closed at the time of the fire extinguishing operation in conjunction with the button 20 and the heating power adjusting knob (not shown) which is rotated and slid. A needle portion 43 is provided, and the needle portion 43 is branched into a flow path from the needle portion 43 to the upper burner 30 and the lower burner 31.

The magnet type safety valve 18 has a holding coil 18a to which a thermoelectromotive force is supplied by a thermocouple 41.
And an iron core (not shown) that generates an electromagnetic force by energizing the holding coil 18a, and an adsorption piece (not shown) that is attracted to the iron core to open and hold a valve element (not shown). And a spring (not shown) for urging the valve body in the valve closing direction.

The upper burner 30 is provided on the upper left and right side surfaces of the heating chamber 7, and the combustion exhaust gas from the upper burner 30 is stored in the heating chamber 7 to heat the article 12 to be cooked. The upper burner 30 is an all-primary pneumatic burner having a combustion surface formed by penetrating a number of small flame openings in a flat plate made of a porous ceramic, and the combustion surface is set to be inclined upward with respect to a vertical surface. Is done. The lower burner 31 includes a lower burner 31c for transferring fire between both of the lower burners 31a and 31b whose flame outlets face each other. These lower burners 31a, 31b,
31c is integrally formed in a U-shape. In addition, between the left and right upper burners 30 and the lower burners 31, the burner pilot burners 32a and 32b (hereinafter, distinguished from each other) which keep burning during the heating and cook the flame to the upper and lower burners 30 and 31. If not, simply referred to as "fire pilot burner 32") are provided on the left and right. Further, a discharge electrode 42 for igniting the left-hand transfer pilot burner 32a during the ignition operation is provided, and this discharge electrode 42 is connected to the igniter 14 for generating a high voltage.
Is connected to a dry battery 44 via an ignition switch 22 which is turned on / off in conjunction with the operation button 20. Further, a thermocouple 41 for generating a thermoelectromotive force by the combustion heat of the fire pilot pilot burner 32b is provided in the right fire pilot burner 32b, and the thermocouple 41 is electrically connected to the holding coil 18a in a closed circuit. You. Note that the fire transfer pilot burner 32 is a normal-fire type fire transfer pilot burner 32 that constantly ignites during grill combustion. Also, upper burner 3
Numeral 0 denotes an all-primary-air burner 30 in which all air required for combustion is supplied as primary air even if it is wrapped in flue gas.
It is a so-called Bunsen-type burner that requires secondary air.

The fire transfer rooms 15a and 15b (hereinafter, simply referred to as "fire transfer room 15" when they are not distinguished from each other)
Partition walls 2a and 2b (hereinafter, when these are not distinguished, simply “partition wall 2” are provided on the left and right sides of exhaust chamber 17 behind heating chamber 7 so that combustion exhaust gas does not flow from heating chamber 7 and exhaust chamber 17. ) Are each formed in an L-shape. Further, the lower portion of the partition wall 2 extends above the lower burner 31 at a position lower than the upper end of the communication port 16 to the exhaust chamber 17 so that the combustion exhaust gas does not flow into the fire transfer chamber 15. It communicates with the exhaust port 39 of the chamber 17.
In addition, a far end of the upper burner 30 extends from the heating chamber 7 through the partition 2 into the transfer chamber 15, and a far end of the lower burner 31 extends to a lower portion of the transfer chamber 15. Then, between the combustion surface of the upper burner 30 and the partition wall 2, a fire is transferred from the fire transfer pilot burner 32 of the fire transfer chamber 15, and the fire is transferred through the partition wall 2 into the heating chamber 7. A possible predetermined gap A (FIGS. 2 and 4) is provided. The gap A is formed to have a size of 5 mm or more.

Next, when the ignition operation is performed, the discharge electrode 42
Ignites the fuel gas of the fire transfer pilot burner 32a in the fire transfer chamber 15a, one burns to the upper burner 30a, the other burns to the lower burner 31a, and then the lower burner 31c for fire transfer.
Through the lower burner 31b → fire transfer pilot burner 32b
→ The fire burns to the upper burner 30b. Also, the upper burner 30
a, 30b and the combustion flame of the lower burners 31a, 31b pass through the partition walls 2a, 2b and ignite on the combustion surface in the heating chamber 7,
The fire starts over the entire grill burner in the heating chamber 7 and combustion is started. Then, by the thermoelectromotive force of the thermocouple 2 provided on the fire pilot burner 32b, the magnet type safety valve 18 is kept open to maintain the combustion. Then, the high-temperature combustion exhaust gas accumulates in the upper portion of the heating chamber 7 and overflows into the communication port 16, and then rises in the exhaust chamber 17 by a draft effect. At the same time, fresh air outside is sucked from the gap 11 below the heating cabinet 7 by the draft effect, and the combustion exhaust gas is discharged from the communication port 16 at the rear center of the heating cabinet 7.

The object to be cooked 12 placed on the mounting surface of the grill 9 is surrounded by the convection of the high-temperature combustion exhaust gas filling the upper part of the heating cabinet 7 and is heated by the combustion heat from the lower burner 31. It is heated to various times and cooked well. When the combustion flame has disappeared, the thermoelectromotive force of the thermocouple 2 drops below a predetermined level, the thermoelectromotive force to the holding coil 18a of the magnet type safety valve 18 drops, and the gas flow path is closed.

As described above, the fire transfer chamber 15a,
In 15b, the partition walls 2a and 2b are provided, respectively, so that the oxygen concentration does not decrease even when the oxygen concentration in the heating chamber 7 decreases. Further, in the fire transfer chamber 15, the combustion exhaust gas of the fire transfer pilot burner 32 is discharged to an exhaust port 39 of the exhaust chamber 17 communicating with the apparatus by a draft effect, and external fresh air is sucked from the lower gap 11. Therefore, during the ignition operation, the pilot pilot burner 32a is reliably ignited. In addition, the fire burner pilot burner 32
Since the combustion flames a and 32b are not lifted or extinguished by the combustion exhaust gas from the heating chamber 7, the upper all primary air burners 30a and 30b and the lower Bunsen-type lower burner 3 are used.
Certainly, the fire is transferred to 1a, 31b, 31c.

The embodiments of the present invention have been described above. However, the present invention is not limited to these embodiments, and can be implemented in various modes without departing from the gist of the present invention. It is. For example, the lower burner 31 that burns the fuel gas in the lower stage of the heating chamber is not limited to the Bunsen type burner.

The discharge electrode 42 and the thermocouple 2 are
The invention is not limited to being provided in the fire pilot burner 32, and may be provided in the upper burner 30 or the lower burner 31.

The lower part of the partition 2 forming the transfer chamber 15 is lower than the communication port 16 of the exhaust chamber 17 and is not limited to the upper part of the lower burner 31, but extends below the lower burner 31. May be.

The upper part of the fire transfer chamber 15 is located above the exhaust chamber 17.
It is not limited to communication with the exhaust port 39 of the
5 may have a unique exhaust outlet.

[0025]

As described above in detail, the grill according to the first aspect of the present invention is a double-sided grill that heats and cooks by storing combustion exhaust gas in a heating chamber. It has an excellent effect of not impairing the fire transfer ability.

According to the grill of the second aspect, in addition to the effect of the first aspect, even in the case of a double-sided grill that heats and cooks by storing combustion exhaust gas in the heating chamber, the fire transfer pilot burner is reliably provided. To ignite.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram schematically showing a grill according to an embodiment of the present invention.

FIG. 2 is a perspective view of a rear left corner of a grill according to the embodiment of the present invention.

FIG. 3 is a schematic view (side view) of a grill according to an embodiment of the present invention.

FIG. 4 is a schematic view (front sectional view) of a grill according to an embodiment of the present invention.

FIG. 5 is a schematic view (plan view) of a grill according to an embodiment of the present invention.

FIG. 6 is an external view of a table stove with a grill.

FIG. 7 is a schematic view (side view) of a grill according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Grill 2 Partition wall 7 Heating cabinet 9 Grill net 10 Receiving tray 12 Cooking object 15 Fire transfer room 16 Communication opening 17 Exhaust room 18 Magnet type safety valve 19 Instrument plug

Claims (2)

[Claims] 1. A heating chamber for storing and cooking an object to be cooked, an all-primary pneumatic upper burner for burning fuel gas at an upper stage of the heating chamber, and burning a fuel gas at a lower stage of the heating chamber. A lower burner, a pilot pilot burner for performing a fire between the upper burner and the lower burner, an exhaust chamber communicating with the heating chamber and discharging combustion exhaust gas, and the upper and lower burners in the heating chamber. And a grate, which is provided at the middle stage between the heating chamber and the heating chamber, and discharges combustion exhaust gas overflowing from the heating chamber to the exhaust chamber while spilling the combustion exhaust gas at the upper portion of the heating chamber. In the double-sided grill, which heats the object with convective heat of the combustion exhaust gas and heats the object to be cooked from below by the combustion heat of the lower burner, a fire transfer chamber is formed so that the combustion exhaust gas of the heating chamber does not flow in, The above fire transfer A grill, wherein a pilot burner is arranged in the fire transfer chamber, and the upper burner and the lower burner face the fire transfer chamber such that the fire can be transferred. 2. The grill according to claim 1, wherein an electrode for igniting the fire transfer pilot burner is arranged in the fire transfer chamber.