JPH01305234A - Vehicle-carried microwave stove - Google Patents

Abstract

PURPOSE:To allow the cooking in a vehicle by providing an inverter circuit which supplies a magnetron with high frequency wave power, and providing said inverter circuit with a plug adapter for connecting a battery for the purpose of supplying DC current as well as an output control circuit which sets the output of the inverter circuit at a low heating output. CONSTITUTION:When the external power source of battery 10 is connected by means of a plug adapter 9, the microcomputer 18 of the output control circuit 19 sends out a microwave oven output control command 18a to the heating output control circuit 16 which dictates an optimum low heating output by the battery 10. The heating output control circuit 16 connected to the input side of the inverter circuit 12 sets the high voltage power to be supplied to the magnetron 15 at the low heating output based upon the microwave oven output control command 18a. The heating for cooking is performed as the power consumption of the battery 10 is controlled. Since the inverter circuit 12 is employed, the step-up transformer 13 can raise the voltage with high frequency waves and be made compact and light weight, and so, the microwave oven unit itself can be made compact and light weight.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a microwave oven that is connected to a vehicle battery as an external power source, and can be connected to an automobile, etc., and heated inside the automobile. This relates to a car-mounted microwave oven that can be used to cook food.

[Prior Art] Conventionally, as in-vehicle refrigeration devices, cool boxes or ice boxes that utilize the air conditioner built into automobiles, portable refrigerators, and the like have been put into practical use and are widely used outdoors. Therefore, it is now possible to cool food, soft drinks, etc. inside the car, albeit for a short period of time.

However, as a heating cooker useful for defrosting, for example, a microwave oven that is small and lightweight for use in a vehicle connected to a vehicle battery has not existed.

That is, the magnetron, which is the heating source, requires high voltage power and a large power transformer, which results in large power consumption.

Therefore, since this type of microwave oven must use commercial power, the main body of the microwave oven is very large and heavy.

[Problems to be Solved by the Invention] These conventional microwave ovens have never been used for vehicle use. In particular, for in-vehicle or portable use, portable refrigerators and ice boxes that can cool soft drinks, food, etc. in a short time, and cool boxes that utilize the air conditioner built into the car are provided.

However, when cooking food that has been chilled in the freezer or icebox, it must be thawed.
In the past, it was necessary to leave the food alone or boil or bake it over low heat, which took time and effort.

The present invention has been made in view of the conventional problems described in
The purpose is to provide a microwave oven that can be connected to a vehicle battery as an external power source and that can cook food inside the vehicle, thereby providing a sufficient desired heating effect.

[Means for Solving the Problems] As described above, in order to solve the conventional problems, the in-vehicle microwave oven according to the present invention is equipped with an inverter circuit that supplies high-frequency power to the magnetron. A plug-in adapter that connects a battery to the circuit and supplies DC power, and an output control circuit that sets the output of the inverter circuit to a low heating output, limiting power consumption by performing only low heating cooking. It is characterized by

[Operation] As described above, according to the present invention, the vehicle battery, which is an external power source, is connected by the plug-in adapter, and DC power is supplied to the inverter circuit. Therefore, the output control circuit operates to set the output of the inverter circuit to only a low heating output. That is, by limiting power consumption, it has become possible to use a vehicle battery as a power source.

[Embodiments] Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

FIG. 1 is a perspective view showing the overall structure of the in-vehicle microwave oven according to the present invention, and FIG. 2 is a circuit diagram showing the overall circuit configuration including the control section. .

Figure 1 is a perspective view of a microwave oven that can be installed in a car.
The microwave main body (1) is divided into upper and lower parts, and has a heating chamber on the upper side, and a microwave door (4) that can be opened and closed in the vertical direction for storing food and the like is installed above it.

In addition, the lower side of the range main body has a range operation part (2),
Three modes can be selected depending on the purpose of cooking with low heating output. That is, a defrost button (5) is used as a defrost mode to defrost frozen food, etc., a keep warm button (6) is used as a keep warm mode to warm the food and keep it warm, and low heating output is required for cooking. It has an egg cooking button (7) as an egg cooking mode for cooking food.

A timer (8) is installed in the microwave operating section (2) so that the cooking time can be freely selected for each of the three modes.

Further, from the rear rear side of the microwave main body, a plug-in adapter (9) is provided for receiving power from a vehicle battery as an external power source.

The content of 1-1-1 below shows the configuration, and the operation will be explained below.

In the microwave oven of the present invention, food is placed in the heating chamber (3),
Close the range door (4).

Insert the plug-in adapter (9) into a car's cigarette lighter, etc., and connect it to an external power source battery.

Next, set the cooking time according to the item to be cooked using the timer (8), and select the appropriate cooking mode using the defrost button (5), the keep warm button (6), or the egg cooking button (
7) Cooking starts when you press any of the buttons, and when the food is heated for the timer set time, cooking ends.

As described above, cooking is performed at a low heating output according to each heating cooking mode.

FIG. 2 shows an embodiment showing the overall circuit configuration of the present invention, which will be described below.

The in-vehicle microwave oven of the present invention connects an automobile battery (10) to an external power source, and connects a plug-in adapter (9) to the oven body to connect a Kosuru capacitor (10).
11), battery power is supplied to an inverter circuit (12) that supplies high-frequency power to the magnetron (15).

The high frequency output of the inverter circuit (12) is connected to the step-up transformer (12) connected in series with the inverter circuit (12).
13) and a voltage doubler rectifier circuit (14), the high voltage power required for the heating effect is supplied to the 74 gnetron (15).

Moreover, the output control circuit (19) is an inverter circuit (12)
is connected to the input side of the inverter circuit (12
) is set to low heating output.

The output control circuit (19) is composed of a heating output control circuit (16) that drives an inverter circuit (12), and a microcomputer (18).

The operation will be explained below. When the battery, which is an external power source, is connected with a plug-in adapter, the output control circuit (1
The microcomputer (18) of 9) issues a range output control command (18) that provides the optimum low heating output by the battery.
a) is sent to the heating output control circuit (16).

A heating output control circuit (18) connected to the input end of the inverter circuit (12) sets the high voltage power supplied to the magnetron (15) to a low heating output based on a range output control command (18a). It is carried out.

In the vehicle-mounted microwave oven according to the present invention as described above, the output control circuit (19) can set the output of the range to a low heating output and at the same time limit power consumption.

Furthermore, by adopting an inverter circuit that supplies high-frequency power to the magnetron, the step-up transformer can now step up the voltage at high frequencies, allowing the use of small and lightweight transformers. Therefore, there is an advantage that the microwave main body can be made smaller and lighter, and the microwave oven is characterized by low heat cooking in the city.

[Effects of the Invention] As described above, the in-vehicle microwave oven according to the present invention employs an inverter circuit that supplies high-frequency power to a magnetron, and an output control circuit that reduces the output of the inverter circuit to a low heating output. It is characterized by using an adapter that plugs into an external power source and using a battery.

Further, in the present invention, the output control circuit sets only a low heating output, and cooking is performed by limiting the power consumption of the battery. Therefore, the effect of suppressing consumption of the vehicle battery can be obtained.

Furthermore, because an inverter circuit is used, the step-up transformer has the advantage of boosting the voltage at a high frequency, making it possible to use a smaller and lighter transformer than conventional transformers. Therefore,
The microwave itself has also become smaller and lighter, making it possible to install it in cars, which was previously impossible, and allowing low-heat cooking to be done outdoors or inside the car. In particular, by using it in conjunction with conventional portable freezers, ice boxes, and cool boxes that use the car's built-in air conditioner, you can thaw and keep food frozen or chilled in the car warm.
It also has the effect of allowing egg dishes to be cooked with low heating output.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the overall structure of a vehicle-mounted microwave oven which is an embodiment of the present invention, and FIG. 2 is a circuit diagram showing the overall circuit structure including a control section thereof. In the figure, (1) is the microwave main body, (2) is the microwave baking section, (3) is the inside of the heating chamber, (4) is the microwave door, (5) is the defrost button, (6) is the keep warm button, and (7) is the microwave oven. is the egg cooking button, (8) is the timer, (9) is the plug adapter, (10)
is the battery, (12) is the inverter circuit, (13) is the step-up transformer, (15) is the magnetron, (16) is the heating output control circuit, (18a) is the range output control command, (
18) is a microcomputer, and (19) is an output control circuit. In the drawings, the same reference numerals indicate the same or corresponding parts. Agent: Masuo Oiwa, patent attorney (2 others)

Claims (1)

[Claims] An inverter circuit that supplies high-frequency power to the magnetron, a plug-in adapter that connects a battery and supplies DC power to the inverter circuit, and an output control circuit that sets the output of the inverter circuit to a low heating output. An on-vehicle microwave oven characterized by being equipped with.