JPH046790A - Cooking apparatus - Google Patents

Abstract

PURPOSE:To use a cooking apparatus at a place where no commercial power receptacle is available by providing an induction heating device including a battery and an inverter or a high-frequency heating device including a high-frequency oscillator receiving the output of the inverter on a moving mount. CONSTITUTION:An induction heating device 7 is provided on a mount 9 with moving wheels 8. A metal pan 11 is mounted on a top plate 10, an it is induction-heated by the high-frequency current flowing in a heating coil provided below the plate 7. A battery serving as a DC power source and an inverter circuit converting the DC into high frequency are provided below the mount 9. The voltage resonance is obtained by the inductance of a heating coil 20 and the capacity of a resonant capacitor 18, and the loss of a switching element 16 is reduced. A high-frequency resonant current flows in the heating coil 20.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cooking appliance whose energy source is DC'74M, such as a battery, and more particularly to a cooking appliance whose power source is equipped with an inverter circuit.

BACKGROUND OF THE INVENTION Conventionally, induction heating devices have been used as an alternative to gas heating because of their high heating efficiency and cleanliness.

FIG. 6 shows an example of a conventional induction heating device.

FIG. 7 is a circuit diagram of a conventional induction heating device.

In Fig. 6, place the metal pot 2 on the pan plate l,
Heat. For power, connect power cord 3 to commercial power source 4,
It has gained.

In FIG. 7, the commercial power source 4 is converted into a high frequency by an inverter i15 and applied to the heating coil 6. The metal tone 2 is inductively heated by the high frequency waves flowing through the heating coil 6.

Problems to be Solved by the Invention However, such heating devices that utilize electric power have a problem in that they cannot be used in places where there is no power outlet.

In other words, compared to gas cooking appliances that use cassette-type gas cylinders and can be installed anywhere, there is a problem in that the places where they can be used are restricted.

In recent years, restaurants have started offering meal services where the food is cooked right in front of your eyes and you can eat it right away.However, gas, charcoal, etc. are used as cooking equipment, and there has been a problem with poor cleanliness. .

Furthermore, cooking and reheating of cooked foods using high-frequency heating devices, which have good heat efficiency and are the same as those used for speedy heating, are becoming popular, but this also has the inconvenience of being limited in the places where it can be used due to power supply limitations. was there.

Therefore, the first object of the present invention is to provide a cooking appliance that can use induction heating even in places where there is no commercial power outlet.

A second objective is to obtain a cooking appliance that uses high-frequency heating in addition to induction heating without restrictions on power source locations.

Means for Solving the Problems In order to achieve the above-mentioned first object, the present invention provides a DC power source including a battery or the like, an inverter that converts the output of the DC power source into a high frequency signal, and a receiver for receiving the output of the inverter. An induction heating device comprising a heating coil for inductively heating a metal container or a pot, a control device for controlling the operation of the induction heating device, the DC power source and the induction heating device, and wheels for transportation. The structure consists of a stand.

Furthermore, in order to achieve the second objective, a DC power source consisting of a battery or the like, an inverter that converts the output of the DC power source into high frequency, and a heating device that receives the inverter and its output and inductively heats a metal container or pot. a heating chamber that houses an object to be heated such as food and supplies the microwaves from the high-frequency oscillator; The apparatus includes a control circuit for controlling the operation of the heating device and the high-frequency heating device, and includes means for switching the output from the DC power source to either the induction heating device or the high-frequency heating device.

Operation The cooking device of the present invention has the above-mentioned configuration, and has a stand equipped with a direct current 1s made of a battery or the like and wheels for movement, and uses the power source to operate an induction heating device provided with an inverter circuit. Therefore, cooking using induction heating can be done even in places without commercial power supply. Induction heating does not use fire,
Since it is highly efficient, it is suitable for cooking in places other than the kitchen. As a result, it is possible to realize a cooking appliance that takes advantage of the advantages of induction heating and can be used anywhere.

In addition, by installing both an induction heating device and a high-frequency heating device on the mobile table, high-frequency heating can be used for high-frequency heating such as tempura dishes that require fast high-frequency heating and a dry finish for browning steak dishes. At the same time, it is possible to realize a cooking device that can be equipped with induction heating that can compensate for cooking that is not good at low cost, and can be used anywhere.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings.

FIG. 1 shows an external view of the cooking appliance of the invention, and FIG. 2 shows a circuit diagram of the cooking appliance of the invention.

In FIG. 1, the induction heating device 7 is installed on a stand 9 equipped with wheels 8 for movement. A metal 9i411 is placed on top of the top plate IO, and is heated by induction by a high frequency current flowing through a heating coil provided at the bottom of the plate. The lower part 12 of the stand is provided with a battery as a DC power source and an inverter circuit that converts DC into high frequency.

In Figure 2, DC $1113 uses a lead acid battery,
Can be used repeatedly by recharging. The output of the DC power supply is connected to a smoothing capacitor 14 to stabilize the power supply voltage.
It is connected to the. The inverter circuit 15 includes a switching element 16, a commutating diode 17, a resonant capacitor 18, and a drive circuit 19.

Inductance of heating coil 20 and resonant capacitor 18
Voltage resonance occurs due to the capacitance of , reducing the loss of the switching element 16. The inverter circuit converts the DC power into a high frequency signal, and a high frequency resonant current flows through the heating coil 20.

According to the cooking appliance of this embodiment, since the power supply unit is installed on one stand, cooking can be performed freely even in places where there is no power supply.

Next, in another embodiment of the present invention, a cooking appliance also equipped with a high frequency heating device will be shown.

In FIG. 3, the induction heating device 21 is mounted on a stand 23 equipped with wheels 22 for movement. A metal pot 25 is placed on top of the knob plate 24 and heated by induction by a high frequency current flowing through a heating coil provided at the bottom of the plate. The lower part 26 of the stand is provided with a battery as a DC power source and an inverter circuit that converts DC into high frequency. 27 is a high frequency heating device, and an induction heating device 21
They share the same power source and operate by switching.

FIG. 4 shows a circuit diagram of the cooking appliance according to the embodiment of the present invention shown in FIG. The output from the DC IT source 28 is connected to either the heating coil 30 or the step-up transformer 31 by a changeover switch 29. An inverter circuit 33 including a switching element 32 and the like converts the DC power source 28 into a high frequency of several tens of kilometers suitable for induction heating. By using a high frequency, the step-up transformer 3I can also be made smaller. The electric power boosted by the step-up transformer 31 is rectified by the voltage doubler rectifier circuit 34 and applied to the magnetron 35 . A switching control circuit 36 switches and controls a selector switch 29 for selecting high frequency heating or induction heating of the cooking appliance.

By using cooking equipment with this configuration, it is possible to use high-frequency heating, which is suitable for reheating cooked foods due to its speed, and induction heating, which is highly efficient and suitable for browning dishes, depending on the situation. Moreover, it is possible to obtain a cooking appliance that can be used anywhere.

FIG. 5 shows a circuit diagram of a cooking appliance equipped with a battery charger according to another embodiment of the present invention. In FIG. 5, the same components as those in FIG. 4 are given the same reference numerals, and their explanations will be omitted.

36 is a charger. In places where there is no commercial power source, the cooking appliance operates with the power from the battery 28. When the power is consumed, the stand is transported to a place where there is a power source and charged. The charger 36 includes a diode bridge 37 that rectifies commercial power and a step-down converter 38. Step-down converter 38 converts commercial power to a voltage suitable for battery charging. The power cord that connects the commercial power source and the charger can be stored inside the main unit except when charging, and can be pulled out and used only when charging is required.

Cooking equipment with such a configuration has a built-in charger, so the battery can be easily charged.

Effects of the Invention As described above, the cooking appliance of the present invention provides the following effects.

(1) It is configured to convert 1t# of DC from a battery etc. using an inverter circuit and drive the induction heating device, and is installed on a portable stand! Therefore, it is possible to obtain a heating cooking device that is easy to transport and is not limited in location by the power source.

(2) Since the induction heating device and the high-frequency heating device are integrated and share the same inverter circuit and DC power source from the battery, you can freely select the cooking method that is suitable for the type of cooking.
Equipment that can be used anywhere for cooking can be provided at low cost.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a cooking appliance according to an embodiment of the present invention, Fig. 2 is a circuit diagram thereof, Fig. 3 is an external perspective view of a cooking appliance according to another embodiment of the invention, and Fig. 4 is the same. 5 is a circuit diagram of a cooking appliance equipped with a charger according to another embodiment of the present invention, FIG. 6 is an external perspective view of a conventional cooking appliance, and FIG. 7 is a circuit diagram of a conventional cooking appliance. It is a circuit diagram. 8... Wheels for transportation, 9... Stand, 10
...Induction heating device, 11...Metal pot,
13...DC power supply, 15...Inverter circuit, 27...High frequency heating device, 35...
...Magstron (high frequency oscillator), 36...Switching control circuit.

Claims (2)

[Claims] (1) An induction heating device consisting of a DC power source such as a battery, an inverter that converts the output of the DC power source into high frequency, and a heating coil that receives the output of the inverter and heats the container by induction, and the induction heating A cooking appliance comprising a control device that controls the operation of the device, and a stand that is equipped with the DC power source and the induction heating device and has wheels for movement. (2) An induction heating device comprising a DC power source such as a battery, an inverter that converts the output of the DC power source into high frequency, and a heating coil that receives the output of the inverter and heats the container by induction, a high-frequency oscillator that converts the output of the high-frequency oscillator into microwaves, a heating chamber that houses an object to be heated such as food and supplies the microwaves from the high-frequency oscillator, and a control circuit that controls the operation of the induction heating device and the high-frequency heating device. A cooking appliance, comprising means for switching the output from the DC power source to either the induction heating device or the high-frequency heating device.