KR20000013635A - Microwave oven equipped with heater position sensing device - Google Patents

Abstract

PURPOSE: A microwave oven is provided to sense the heater position and facilitate cooking by giving the heater position information to the user. CONSTITUTION: The microwave oven comprises; a square cavity(22) formed inside to receive food to be cooked; a tray located below the cavity(22), supported by the turntable which is turned round by a motor; a magnetron emitting a microwave for cooking and to irradiate the microwave on the food received in the cavity; a heater(17) located at the top of the cavity rotating between the 1st and 2nd heating point by the manipulation of the rotation part; and a heater location sensing device.

Description

Microwave oven having means for sensing a position of heater

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven, and more particularly, in a microwave oven in which a roasting mechanism is built in a cavity (heating cooking chamber), the position of the heater when cooking food located in the roasting apparatus with a heater provided on the upper part of the cavity. It relates to a microwave oven having a heater position detecting means for detecting the.

In general, the microwave oven generates a high-frequency and heater heat into the cavity 22 having a hexahedral shape in which food F to be cooked inside the cabinet 21 is placed, as shown in FIG. 1. The drive chamber 23 to be supplied is partitioned and separated by the inner panel 24.

The microwave oven is located in a tray 11 in the form of a dish in which food F is placed, and the tray 11 is supported by a turntable 12 provided below the bottom of the cavity 22. The turntable 12 is provided with a turntable shaft 13 at the bottom thereof, and the turntable shaft 13 is connected with the shaft of the turntable motor 14. Therefore, when the food F is cooked, the turntable 12 rotates the tray 11 on which the food F is placed at a constant speed by driving the turntable motor 14 to uniformly cook the food F. FIG. Let's do it.

While the tray 11 in which the food F is placed is rotated at a constant speed, the food F placed in the cavity 22 is a magnetron installed in the wave guide 16 formed at one side of the cavity 22. Cooked by the microwave generated by 15), the microwave generated by the magnetron 15 is irradiated into the cavity 22 by the wave guide 16.

On the other hand, in the case where the food F is baked and cooked, a heater 17 for baking the food F and cooked is provided on the upper part of the cavity 22, and the heater 17 is cooked to cook the food F for roasting. When operated, the magnetron 15 is not operated, and conversely, when the magnetron 15 is operated to cook food F placed in the tray 11, the heater 17 is stopped.

Preferably, the heater 17 heats the food F placed in the roasting apparatus 10 more effectively, for example, the grill 10b or the roasting pan 10a which is placed on the grill 10b. ) Position can be adjusted. The heater 17 is supported on the upper part of the cavity 22 by the heater support 18 and provided to the drive chamber 23 to heat the food F more effectively according to the type of food F to be cooked. By being rotated by the heater rotating unit 19, the position is adjusted as described above.

For example, in the case of cooking chicken, the heater 17 is pivoted downward to be located at the rear of the chicken as shown in FIG. 2A and is located at the rear of the chicken loaded on the grill 10b, and the turntable 12 Rotate the chicken and cook the chicken while the chicken is rotated.

On the other hand, when food (F), such as fish, is placed in the roasting device (10), such as the roasting pan (10b), as shown in Figure 2b, the heater 17 is located above the food (F), F) is rotated from the position of FIG. 2A to be positioned on top of the cavity 22 to heat it. The positioning of the heater 17 may be selected by the user directly rotating the heater rotating unit 19 according to the food F to be cooked.

However, in the conventional microwave oven in which the heater is rotatably installed on the upper part of the cavity as described above, when the food is cooked using a roasting apparatus, the heater is manually cooked according to the food to be cooked, for example, grilled fish or roasted chicken. In order to cook food more conveniently, the user must know the position of the heater, and even in this case, there is a problem that it is difficult for the user to accurately position the heater in the correct position.

Accordingly, an object of the present invention, in cooking a food with a heater in the microwave oven equipped with a heater, by providing the heater position information to the user by detecting the position of the heater to position the heater according to the food to be cooked, It is to provide a microwave oven for cooking more convenient.

1 is a schematic cross-sectional view showing a microwave oven provided with a heater for heating and cooking a conventional roast food.

Figure 2a is a view for showing the position of the heater when cooking the food, such as whole chicken heating, Figure 2b is a view for showing the position of the heater when cooking fish.

3 is a schematic perspective view of a microwave oven having a heater position detecting means according to the invention;

4 is a flowchart for explaining the function of the microwave oven according to the heater position by the heater position detecting means.

(Explanation of symbols for the main parts of the drawing)

1: light emitting signal portion 2: light receiving signal portion

15: magnetron 17: heater

19: heater rotating part 22: cavity

A: first heating position B: second heating position

The object as described above, in accordance with the present invention, and a rectangular shaped cavity formed therein to accommodate food to be cooked; A tray positioned below the cavity and supported by a turntable rotated by a turntable motor; A magnetron for generating microwaves for cooking food, and irradiating the generated microwaves to food contained in the cavity; A heater provided at the top of the cavity to rotate between the first and second heating positions by manipulation of the rotating part; Heater position detecting means for detecting a position of the heater; It can be achieved by a microwave oven, characterized in that it comprises a display unit for displaying the position of the heater detected by the heater detection means.

In the above, the heater detecting means may be provided at at least one of the first and second heating positions.

In the above, the heater detecting means includes a light emitting signal portion provided on one side wall of the cavity corresponding to at least one of the first and second heating positions, and the other side wall of the cavity facing the light emitting signal portion. And a light receiving signal portion for receiving a signal from the light emitting signal portion.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

3 is a schematic perspective view of a microwave oven having a heater position detecting means according to the present invention. As shown in FIG. 3, in the microwave oven according to the present invention, a heater 17 for heating and cooking food for roasting (not shown in FIG. 3) is provided on the upper part of the cavity 22, and such a heater 17 is provided. As described above, the first heating position A for cooking food such as chicken and the second heating position for cooking food such as fish by the operation of the heater rotating unit 19 provided in the driving chamber 23. Rotated between (B).

On the other hand, when the heater 17 is located in the first heating position A or the second heating position B, at least one of the first heating position A and the second heating position B according to the present invention. The position is detected by the heater position detecting means provided at the position of.

This heater sensing means preferably comprises a cavity corresponding to at least one of the first heating position A and the second heating position B (shown as being located in the second heating position B in FIG. 3). The light emission signal part 1 provided in one side wall 22a of 22, and the light reception signal part 2 provided in the other side wall 22b of the cavity 22 which faces the light emission signal part 1; It consists of.

3, when the heater sensing means is located at the second heating position B and the heater 17 is positioned at the second heating position B for heating and cooking food such as fish, the light emitting signal portion The signal emitted from (1) is blocked by the heater 17, so that it cannot be received by the light receiving signal unit 2. The position detection result of the heater 17 by this heater position detection means is input to the controller of a microwave oven (not shown).

The controller executes the following program as shown in Fig. 4 in accordance with the signal of the heater position detecting means.

First, when a user presses a cooking type button provided on a control panel of a microwave oven to cook food such as fish or whole chicken, food to be cooked by the heater 17 is set (S1). In step S1, when the food to be cooked is set by the heater 17, the controller is configured to have one side of the cavity 22 corresponding to at least one of the first heating position A and the second heating position B. FIG. The light emitting signal unit 1 provided on the side wall 22a and the light receiving signal unit 2 provided on the other side wall 22b of the cavity 22 facing the light emitting signal unit 1 Detect the position (S2).

At this time, it is determined whether or not the position of the heater 17 is appropriate according to whether the light receiving signal unit 2 receives the signal from the light emitting signal unit 1 (S3), and as a result of the determination, the heater ( If the position of 17) is appropriate, the heater 17 is operated to perform food cooking (S4).

However, in step S3, when it is determined that the position of the heater 17 is not appropriate, the position of the heater 17 is displayed to the user through a display unit (not shown) provided to the control panel of the microwave oven ( S5). According to the display result, the user changes the position of the heater 17 (S6), and returns to step S1 and presses the cooking type button provided on the control panel to reset the food to be cooked by the heater 17, as described above. The same process is repeated.

The heater position detecting means may be located at the first heating position A for cooking the chicken, but since the magnetron 15 may be installed at the first heating position A, the cooking apparatus may avoid the position. It is preferable to be located in the 2nd heating position B. FIG.

On the other hand, although the position of the heater 17 is described as being changed by the user, it is also possible to change the position of the heater 17 using a motor.

As described above, according to the microwave oven having a structure according to the present invention, when cooking food with the heater, the heater may be located in place according to the food to be cooked, so that the user You can cook food more conveniently.

Claims (3)

A cavity having a rectangular shape formed therein to accommodate food to be cooked; A tray positioned below the cavity and supported by a turntable rotated by a turntable motor; A magnetron for generating microwaves for cooking food, and irradiating the generated microwaves to food contained in the cavity; A heater provided at the top of the cavity to rotate between the first and second heating positions by manipulation of the rotating part; Heater position detecting means for detecting a position of the heater; And a display unit for displaying the position of the heater detected by the heater detecting means. 2. The microwave oven according to claim 1, wherein said heater sensing means is provided at at least one of said first and second heating positions. The light emitting device according to claim 1 or 2, wherein the heater detecting means comprises: a light emitting signal portion provided on one side wall of a cavity corresponding to at least one of the first and second heating positions; And a light receiving signal portion provided on the other side wall of the cavity so as to face each other and receiving a signal from the light emitting signal portion.