JP3593583B2 - Gas grill - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a gas grill for heating a cooked product such as fish in a heating cabinet.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a gas stove provided with a heating chamber capable of heating and cooking cooked items such as fish, the cooked items are placed on a grill to improve the cooking performance by making the temperature distribution in the heating box uniform. It is desirable to preheat the heating chamber for several minutes by igniting the burners beforehand.
In such a case, the cook decides an approximate time and operates the burner for heating the heating cabinet to operate the ignition. Alternatively, the temperature in the heating chamber may be detected by a thermistor or the like, and a notification may be given when the temperature reaches the preheating completion temperature, or a timer may be started at the same time as the ignition of the burner to notify the completion of the preheating after a predetermined time has elapsed. Can be
[0003]
[Problems to be solved by the invention]
However, when the person performing the cooking performs the preheating operation in the approximate time, not only is it troublesome but also the preheating time is not constant, so if the preheating time is too short, a sufficient preheating effect cannot be obtained. On the contrary, if the preheating time is too long, the fuel gas is wasted.
In addition, when a temperature detecting device is provided using a thermistor or the like, a power supply and an electric control unit are required, which is expensive. In the case of a commercial power source, an outlet or the like is required, and in the case of using a dry battery or the like as a power source, it is necessary to replace a depleted battery. Further, when a timer is used, the notification is performed after a predetermined time has elapsed irrespective of the degree of temperature rise. Therefore, preheating may be excessive or preheating may be insufficient. Moreover, the timer mechanism (mechanical or electric) is also expensive.
An object of the present invention is to solve the above-described problems and to provide a gas grill that can easily and preliminarily notify preheating.
[0004]
[Means for Solving the Problems]
The gas grill of the present invention that solves the above-mentioned problems includes a heating chamber, a burner that heats a cooked product in the heating chamber, a thermoelectric element that generates a thermoelectromotive force by combustion heat of the burner, and the thermoelectric element. A light-emitting element that is connected to emit light when the thermoelectromotive force rises, and that the preheating completion notification is performed by light-emitting display of the light-emitting element.
[0005]
A second gas grill of the present invention includes a heating chamber, a burner for heating a cooked product in the heating chamber, a thermoelectric element for generating a thermoelectromotive force by the combustion heat of the burner, and a thermoelectric element generated from the thermoelectric element. The gist of the invention is to provide a storage battery that is charged by the thermoelectromotive force, and a notifying unit that uses the storage battery as a power source and notifies completion of preheating when the thermoelectromotive force generated from the thermoelectric generator reaches a predetermined value.
[0006]
According to a third gas grill of the present invention, in the first and second gas grills, the thermoelectric generator is provided with a heat storage element in a heat-sensitive portion that generates a thermoelectromotive force.
[0007]
[Action]
The first gas grill of the present invention having the above-described configuration includes a thermoelectric generator, and emits light directly from the luminous body using generated thermoelectromotive force when preheating the heating chamber. The luminous body emits light due to an increase in thermoelectromotive force. In addition, a predetermined amount of heat is required for the thermoelectromotive force to rise to the light emission voltage of the light emitter. Since the thermoelectric generator naturally has a heat capacity, it takes time from the start of preheating to the emission of the luminous body.
For example, when the heating chamber is not too cold, the time until the thermoelectromotive force rises to the light emission voltage of the luminous body is naturally short because the thermoelectric generator is not cold. Conversely, if the heating cabinet is completely cold, the preheating time will be longer. When the light-emitting body emits light after a lapse of time from the start of the preheating, the preheating is completed.
Further, when the illuminant emits light, the heating chamber is used, so that it can be used as it is as a means for displaying not only preheating but also indicating that the heating chamber is in use.
[0008]
The second gas grill of the present invention includes a thermoelectric generator and a storage battery, and charges the storage battery with thermoelectric power generated from the thermoelectric generator. In addition, since a notification unit using a storage battery as a power source is provided, when preheating of the heating chamber is performed, when the thermoelectromotive force reaches a predetermined value, it is detected and a notification of completion of preheating is performed.
Also, since the storage battery is charged even during preheating or cooking, there is no need to separately provide a power supply or perform a charging operation even if the notification means is configured to consume large power. That is, it is possible to easily construct a gas grill which is easy to use and does not require a charging operation while having a storage battery.
[0009]
In the third gas grill, in the thermoelectric generator, a heat storage element is provided in a heat-sensitive portion that generates a thermoelectromotive force, thereby increasing the heat capacity. Thus, when the heating chamber is preheated, the degree of increase in the generated thermoelectromotive force is suppressed, and the time until the completion of the preheating notification is increased. Therefore, even if there is a discrepancy between the preheating completion time and the thermoelectromotive force rise time (that is, when only the thermoelectromotive force rises quickly even though the heating chamber is not sufficiently preheated), the heat capacity of the heat storage body , The time difference between the two can be easily reduced.
[0010]
【Example】
In order to further clarify the configuration and operation of the present invention described above, a preferred first embodiment of the gas grill of the present invention will be described below with reference to the drawings.
As shown in the front view and the side view of FIG. 1, a gas grill provided at the center of a table stove for cooking fish, etc., has a grill 9 on which cooking items 12 are placed, and slides forward while the grill 9 is placed. It is composed of a water tray 10 to be drawn out, a burner 13 for burning gas to heat the cooked product 12, and a heating cabinet 8 for storing these.
The burners 13 are provided on the upper side surfaces of both sides of the heating cabinet 8, and a hot plate 14 is also provided in the upper front part of the flame 13 a. The cooking product 12 is irradiated with the heat of combustion from the flame 13a of the burner 13 and the radiation heat from the hot plate 14 heated by the flame 13a.
Further, a hood 15 is provided at the upper end of the heating chamber 8 to form a flue 16, and the flue 16 communicates with an exhaust port 17 opened above the rear part of the table stove 1.
The thermocouple assembly 2 faces the flame 13a from above, and supplies a thermoelectromotive force generated by combustion heat to the light emitting diode 3.
[0011]
When the preheating is started by igniting the burner 13, the thermocouple assembly 2 is heated by the flame 13a and increases the thermoelectromotive force V with time T as shown in FIG. After a lapse of a predetermined time, the temperature distribution in the heating chamber 8, that is, the thermoelectromotive force V reaches a steady state. At this time, the thermoelectromotive force level of the thermocouple integrated body 2 is higher than that of the single thermocouple. Therefore, it is possible to reach the thermoelectromotive force level VH at which the light emitting diode 3 emits light directly.
Then, the time until the thermoelectromotive force level VH is reached, that is, the time T1 until the light emitting diode 3 emits light, is adjusted to match the preheating required time T2, and the preheating is completed when the light emitting diode 3 emits light.
[0012]
When there is a discrepancy between the light emission time T1 and the preheating completion time T2, as shown in FIG. 5, a heat storage material 50 is provided in the heat sensing portion 2a of the thermocouple integrated body 2 and the heat storage material 50 is provided as shown in FIG. The rising characteristics of the electromotive force V are adjusted. The heat storage material 50 is formed by molding a heat-resistant ceramic and covers the heat-sensitive portion 2a. Alternatively, the copper-based alloy is cut and fitted to the heat-sensitive portion 2a.
A technique for adjusting the rising characteristic of the thermoelectromotive force V will be described in detail. In the case where the heat storage material is not provided, a case is assumed where the thermoelectromotive force rising characteristic of the thermocouple assembly 2 reaches the voltage VH at which the light emitting diode 3 emits light when the time T1 elapses from the start of preheating (a graph of an imaginary line). . If the light emission time T1 is earlier than the preheating completion time T2 (T1 <T2), the light emitting diode 3 will emit light before the appropriate preheating is completed. At this time, the heat storage material 50 is provided on the heat-sensitive portion 2 a of the thermocouple assembly 2.
The heat-sensitive portion 2a is irradiated with the heat of combustion by the flame 13a of the burner 13 and the radiant heat from the hot plate 14 heated by the flame 13a (see FIG. 1). When the heat storage material 50 is provided, since the heat storage material 50 has a heat capacity, the heat is transmitted to the internal heat-sensitive portion 2a via the heat storage material 50 once, so that the heat storage material 50 is not provided. The time required for the light emitting diode 3 to reach the light emitting voltage VH is correspondingly longer than that of the thermocouple integrated body having the configuration (solid line graph). Since this time increases or decreases depending on the capacity of the heat storage material 50, by adjusting the capacity of the heat storage material 50, the light emission timing is matched with the preheating completion time T2.
[0013]
As described above in detail, the gas grill of the first embodiment causes the light emitting diode 3 to emit light directly using the thermoelectromotive force V generated from the thermocouple assembly 2 when the heating chamber 8 is preheated. Then, the time from the start of the preheating until the light emitting diode 3 emits light is used as the preheating time. For this reason, the preliminary heating can be inexpensively and easily performed, as compared with, for example, a case where a temperature detection device is provided using a thermistor or the like to perform the notification, or a case where the notification is performed after a predetermined time has elapsed using a timer. Further, after the diode 3 emits light, it can be used as a display device for notifying the use of the heating chamber 8 as it is.
Moreover, even with a simple configuration, the temperature distribution state in the heating chamber 8 at the time of completion of the preheating is always uniform, so that the cooking performance is improved.
Furthermore, even if there is a discrepancy between the preheating completion time and the rising time of the thermoelectromotive force of the thermocouple assembly 2, even if only the thermoelectromotive force rises quickly even though the heating chamber 8 is not sufficiently preheated, By adjusting the heat capacity of the heat storage material 50, both can be easily matched. Therefore, even if it is cheap, it is a gas grill which can certainly inform preheating.
[0014]
Next, a second embodiment will be described.
As shown in FIG. 3, the gas grill of the second embodiment has a configuration in which a storage battery 31 and a control unit 32 are added to the first gas grill. Other configurations are the same.
The thermoelectromotive force of the thermocouple integrated unit 2 charges the storage battery 31 via the control unit 32, and at the same time, when the thermocouple integrated unit 2 has a predetermined thermoelectromotive force or more, the light emitting diode 3 emits light with the power of the storage battery 31. Let it.
As shown in FIG. 4, the control unit 32 detects the thermoelectromotive force V of the thermocouple integrated body 2 and the boosting circuit unit 41 which once boosts the thermoelectromotive force V of the thermocouple integrated body 2 and supplies the same to the storage battery 31. And a comparison circuit section 42 for causing the light emitting diode 3 to emit light by comparing with a predetermined value. The comparison circuit unit 42 compares whether the thermoelectromotive force V generated from the thermocouple assembly 2 has reached a predetermined value, that is, a voltage VH corresponding to the completion of the preheating of the heating chamber 8, and a signal when the thermoelectromotive force V reaches the predetermined value. Put out. The switch (not shown) of the light emitting diode 3 using the storage battery 31 as a power source is turned on by the signal, and the light emitting diode 3 emits light.
[0015]
In the gas grill of the second embodiment, the storage battery 31 is always charged when the heating chamber 8 is preheated or when cooking is used. Therefore, it is not necessary to perform a special charging operation or battery replacement while the storage battery 31 is provided. Further, even if the light emitting diode 3 is configured to consume a large amount of power, it is not necessary to separately provide a power supply. Therefore, it is easy to use.
[0016]
Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments at all, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention. For example, a buzzer or a liquid crystal display device may be used instead of the light emitting diode 3 in the second embodiment. (However, a stop timer or switch is required for the buzzer.)
Although the thermocouple assembly 2 has been described with reference to FIGS. 1 and 2 and has a type in which a heat-sensitive portion that generates a thermoelectromotive force is integrated in one place, the heat-sensitive portion is formed by the flame of the burner 13. 13a may be of a type that is widely dispersed and installed to generate a higher thermoelectromotive force.
Further, as the heat storage material 50, various metals, alloys, ceramics, and the like can be used as long as the material has a large heat capacity and heat resistance.
[0017]
【The invention's effect】
As described above in detail, the first gas grill of the present invention emits light by emitting light directly from the luminous body by the generated thermoelectromotive force when preheating the heating chamber, and starts preheating to emit light. The time up to can be used as the preheating time. For this reason, preheating is cheaper and easier than in the case where a temperature detection device is provided by using a thermistor or the like that requires a power supply to perform notification, or when notification is performed after a predetermined time has elapsed using a timer. Can be informed.
Further, it can be used as it is as a means for indicating the use of the heating chamber as well as the notification of the preheating.
Moreover, even with a simple configuration, the temperature distribution in the heating chamber at the time of completion of the preheating is always uniform, so that the cooking performance is improved.
[0018]
The second gas grill of the present invention not only charges the storage battery with the thermoelectromotive force generated from the thermoelectric generator, but also performs preheating of the heating chamber when the thermoelectromotive force reaches a predetermined value. Detect and notify.
Therefore, the charging operation is not required while the storage battery is provided, so that it is very convenient to use.
[0019]
In the third gas grill, a heat storage element is provided at a contact of the thermoelectric generator for generating a thermoelectromotive force to increase the heat capacity, and when the heating chamber is preheated, the time of the preheating completion notification is extended. For this reason, the time difference between the preheating completion time and the thermoelectromotive force rise time can be easily reduced, so that it is possible to provide a gas grill that can provide inexpensive and reliable preheating notification.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a gas grill as a first embodiment.
FIG. 2 is a graph illustrating a thermoelectromotive force characteristic.
FIG. 3 is a schematic configuration diagram of a charge notification portion of a gas grill as a second embodiment.
FIG. 4 is a schematic configuration diagram of a charge notification portion of a gas grill according to a second embodiment.
FIG. 5 is a schematic diagram illustrating a heat storage material provided in a thermocouple integrated body.
FIG. 6 is a graph illustrating thermoelectromotive force characteristics when a heat storage material is provided.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Table stove 2 Thermocouple integrated body 2a Heat sensing part 3 Light emitting diode 8 Heating cabinet 9 Griddle 10 Water tray 13 Burner 13a Flame 14 Hot plate 15 Food 16 Flue 17 Exhaust port 31 Storage battery 32 Control unit 41 Boost circuit unit 42 Comparison circuit Part 50 heat storage material

Claims (3)

A heating cabinet,
A burner for heating the cooked food in the heating chamber,
A thermoelectric generator for generating a thermoelectromotive force by the combustion heat of the burner,
A luminous body that is connected to the thermoelectric element and emits light when the thermoelectromotive force increases,
A gas grill, characterized in that the preheating completion notification is performed by the light emission display of the light emitter. A heating cabinet,
A burner for heating the cooked food in the heating chamber,
A thermoelectric generator for generating a thermoelectromotive force by the combustion heat of the burner,
A storage battery charged by the thermoelectromotive force generated from the thermoelectric generator,
A gas grill comprising: a storage battery; and a notification unit that notifies completion of preheating when a thermoelectromotive force generated from the thermoelectric generator reaches a predetermined value. The gas grill according to claim 1, wherein the thermoelectric generator includes a heat storage unit provided in a heat-sensitive unit that generates a thermoelectromotive force.

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