KR20060114113A - A method for cooling magnetron in over the range by using ventilation fan - Google Patents

Abstract

A method of cooling magnetron of a hood microwave oven using a ventilation fan is provided to extend the duct from the ventilation fan to the magnetron and cool the magnetron by the air generated from the ventilation fan. A method of cooling magnetron of a hood microwave oven using a ventilation fan is composed of a step(S12) of judging whether or not this step is a cooking mode at a preparation mode step(S10); a step(S14) of operating the ventilation fan in a low mode at a low speed if the upper step is the cooking mode; a step(S16) of judging whether or not a button is pushed; a step(S18) of changing the low mode into a high mode if the button is pushed; a step(S20) of judging whether or not the button is pushed; a step(S22) of changing the high mode into the low mode if the button is pushed; a step(S26) of judging whether or not this step is the cooking mode; and a step(S28) of changing the low mode into the high mode if the upper step is the cooking mode.

Description

A method for cooling the magnetron of a combined-use microwave oven with a vent fan {A METHOD FOR COOLING MAGNETRON IN OVER THE RANGE BY USING VENTILATION FAN}

1 is a view schematically showing the structure of a common hood microwave oven.

2 is a flowchart illustrating a method of cooling the magnetron of the microwave oven according to the present invention using a ventilation fan.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven, and more particularly, to a method of cooling a magnetron of a microwave oven using a fan to cool a magnetron of a microwave oven.

In general, the hood-use microwave oven is installed on the gas stove to perform the function of the microwave oven and at the same time the hood function to exhaust the food smell and cooking smoke generated when cooking in the gas range to the outside at the same time. In addition, it can be combined with cooking appliances such as stoves and ovens. The hood-use microwave oven includes a duct in which a front grill and a ventilation motor are installed, and an air guide for guiding intake and exhaust of air is installed in the upper part of the cooking chamber and the electrical compartment inside the upper end of the duct. . Therefore, in the microwave oven with hood, the air sucked into the duct from the bottom by the ventilation motor is exhausted to the front, rear or vertical upper portion of the duct, the air introduced into the electrical equipment room through the front grill of the duct is the top plate and the air guide It is guided through and part of the structure that is directly introduced into the cooking chamber is exhausted to the outside.

FIG. 1 is a front view of a common microwave oven, and a cavity upper plate 4 and a lower plate 6 are installed in the main body 2 so that a cooking chamber can be formed inside the main body 2, and a magnetron 8 generating electromagnetic waves on the right side of the cooking chamber. ) And an electrical equipment chamber 12 in which the cooling fan 10 and the like are installed, and an exhaust fan 14 for exhausting is installed in the upper part of the cavity upper plate 4. In the lower portion of the main body 2, a cooking smoke and a food smell are formed on the inlet 20, and an exhaust path 16 for transferring the exhaust sucked in the inlet 20 to the exhaust fan 14 is provided in the main body 2. It is formed on both sides of the).

The exhaust fan 14 is installed at an upper side of the main body 2, and both sides are connected to the exhaust path 16 so that exhaust is introduced, and exhaust ducts are discharged in front or upward. When the food microwave is put in the cooking chamber and the microwave is operated, the food is cooked by the electromagnetic waves emitted from the electric part 12. This is the same as a normal microwave function.

In addition, when the user uses a gas stove for cooking food, the user has an exhaust function of discharging smoke generated during cooking. That is, by the operation of the exhaust fan 14, the smoke and the like is sucked through the suction port formed in the bottom portion of the main body 2, the sucked smoke is transported along the exhaust path 16 to the exhaust fan 14, It is discharged to the outside through the discharge duct connected to the exhaust fan (14).

That is, when food is cooked using the hood-use microwave oven, microwaves of about 2450 MHz generated by applying high-voltage electricity to the high frequency oscillation tube netron 8 vibrate the water molecules contained in the food. The frictional heat causes rapid heating of the outside and inside of the food at the same time. The hood-use microwave oven is composed of a cooking chamber, which is a cooking space inside the microwave oven main body 2, and an electric equipment chamber in which various driving devices for driving the microwave oven are installed. The inside of the cooking chamber is provided with a rotary tray for rotating the food to uniformly cook the whole, the lower portion of the rotary tray is equipped with a drive motor for rotating the rotary tray. The electrical equipment room is provided with a high voltage transformer, a high voltage capacitor, a high voltage diode, a magnetron, and a cooling fan for cooling each of these driving devices as components necessary for oscillating high frequency, which is a cooking heating source of food. The high voltage transformer applies the high voltage required to the magnetron to generate a high frequency.

The magnetron 8 has a separate cooling fan 10 is installed in the vicinity to cool the high temperature heat generated from the magnetron in real time, which causes the product to be complicated and the reliability is lowered.

The present invention has been made in view of the above-described problems, and the present invention provides a method of cooling a magnetron of a dual-use microwave oven using a ventilating fan to automatically cool the magnetron of a dual-use microwave oven. For that purpose.

The present invention, in order to achieve the above object, the present invention, in a hood microwave oven having a temperature sensor for sensing the temperature of the microwave oven with a hood, and a ventilation fan during cooking, the hood microwave oven is a magnetron The user can select an operation mode of the ventilation fan is provided with a separate duct extending to, the ventilation fan operates in one mode selected from the low mode and high mode in the operating state of the microwave oven, Provided is a method of cooling a magnetron of a combined microwave oven using a fan to operate in a mode selected from a low mode, a high mode, and an off mode in a stopped state.

EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention is demonstrated with reference to an accompanying drawing.

2 is a flowchart illustrating a method of cooling the magnetron of the microwave oven according to the present invention using a ventilation fan.

Referring to FIG. 2, a separate duct (not shown) is provided between the fan and the magnetron of the hood-use microwave oven so that air generated from the fan is applied to the magnetron through the duct to cool the magnetron.

When the microwave oven is switched to the cooking mode and starts cooking in the fan fan in the off mode, the fan is automatically switched to the low mode to operate at a low speed. In addition, when the temperature detected by the temperature sensor installed on any one side of the hood-use microwave oven in the state that the fan is in the off mode is more than the first set temperature value, the fan is automatically switched to the low mode and low speed Will work. In an embodiment of the present invention, when the temperature sensed by the temperature sensor is equal to or greater than a second set temperature value, the ventilation fan may be set to switch to a high mode to operate at a high speed. The value is set to a temperature value higher than the first temperature value.

If the button is pressed while operating in the high mode, the fan is switched to the low mode regardless of the cooking mode. Subsequently, when the button is pressed for the second time during the operation in the low mode, it is determined whether the cooking mode is the high speed mode in the cooking mode and the high power operation in the non-cooking mode.

In addition, when the user presses a button arbitrarily while the fan is in the off mode, the fan is switched to a low mode and operates at a low speed. Subsequently, if the button is pressed for the second time while operating in the low mode, the fan is switched to the high mode regardless of the cooking mode, and the third button is pressed again while the fan is operating in the high mode. When pressed, it goes low.

When the button is pressed in the cooking mode, the fan is capable of only changing the operation to the low mode or the high mode, and is not set to the power-off mode, while the ventilation fan is in the high mode when the button is pressed in a non-cooking mode. Is changed to the low mode, and when the second button is pressed, the power is switched to the off mode.

The ventilation fan maintains the operation mode even when cooking is finished, if a temperature higher than the temperature value set by the temperature sensor is continuously detected.

In one embodiment, it is determined whether the cooking mode in the standby mode (S10) (S12). If the cooking mode in the step (S12) to operate the low speed fan in a low mode (S14). After the step S14, it is determined whether the button is pressed (S16). If the button is not pressed, the low speed operation is continued, and if the button is pressed, the mode is switched from the low mode to the high mode (S18). After step S18, it is determined whether the button is pressed (S20). If the button is not pressed, the high speed operation is continued, and if the button is pressed, the high mode is switched to the low mode (S22). After the step S24, it is determined whether the button is pressed, and if the button is not pressed, the low speed operation is continued in the low mode, and if the button is pressed, it is determined whether it is the cooking mode (S26). In the step S26, when the cooking mode is switched to the low mode from the high mode (S28), when not in the cooking mode, the power is switched off (S28) to stop the operation of the fan.

In addition, in step S12, if it is not in the cooking mode, it is determined whether the button is pressed (S30). If the button is pressed, the mode is switched to the low mode, and the fan is operated at low speed (S14). When the button is not pressed in the step (S30), it is determined whether the temperature detected from the temperature sensor is greater than the set value (S32). When the temperature is lower than the value set in the step S32, the standby mode step S10 is continuously performed. When the temperature is higher than the set value, the fan is operated in a low mode in a low mode (S14).

As can be seen from the above description, the present invention extends the duct from the fan to the magnetron in order to cool the magnetron of the hood-use microwave oven using the fan so that the magnetron is cooled by the air generated from the fan. .

Claims (4)

In the microwave oven with a temperature sensor and a ventilating fan for sensing the temperature of the microwave oven for cooking, The hood-use microwave oven may select an operation mode of the ventilation fan provided with a separate duct extending to the magnetron, and the ventilation fan may be selected from a low mode and a high mode in the operating state of the microwave oven. And operating the magnetron of the microwave oven using a fan, wherein the magnetron is operated in one of a low mode, a high mode, and an off mode in a stopped state of the microwave oven. The method of claim 1, The ventilation fan is a method for cooling the magnetron of the microwave oven with a hood using a ventilation fan, characterized in that automatically operating when the temperature detected by the temperature sensor is higher than the set temperature. The method of claim 1, The ventilation fan maintains a stop state when the temperature sensed by the temperature sensor is higher than a set temperature, and vents the magnetron of the microwave oven with the hood, which is operated when the microwave oven is operated or by a user's selection. How to cool using a fan. The method of claim 2, The set temperature value is set to a first temperature value and a second temperature value, and automatically operates in a low mode when the temperature detected by the temperature sensor is higher than the first temperature, and when the detected temperature is higher than the second temperature. A method of cooling a magnetron of a combined-use microwave oven using a fan to automatically operate in a high mode.

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