KR970003077Y1 - Microwave oven - Google Patents

Abstract

None.

Description

Microwave oven with convection and stirrer fan

1 is a front sectional view showing the technical configuration according to the present invention.

Figure 2 is a front view showing the hot air circulation state in the cooking chamber by the convection and stirrer combined pan in the present invention.

Figure 3 is a front view showing a high frequency dispersion state in the cooking chamber by the convection and stirrer combined pan of the present invention.

* Explanation of symbols for main parts of the drawings

10: convection and stirrer fan 11: spin axis

20: fan motor 30: belt

50: tray motor 51: tray motor shaft

The present invention improves the performance of microwave ovens by installing convection and stirrer pans in the lower part of the cooking chamber in order to install convection pans to give oven functions in multi-functional microwave ovens. It relates to a microwave oven equipped with a convection and a stirrer combined fan.

In general, microwave ovens are equipped with a single-function microwave oven for cooking food placed on the tray by irradiating high frequency energy into the cooking chamber by a magnetron installed in the electrical equipment room. Grill oven function to cook the surface of food brown with heat generated by the heater and hot air oven function to force the convection fan to disperse the heat of the heater to cook, a combination function to cook food using high-frequency heater heat at the same time It is divided into multifunctional microwave ovens.

Currently, multi-functional microwave ovens with a heater and a convection fan inside the cooking chamber are mainly used. Such convection fans are built on the axis of the convection motor installed at the rear of the cooking chamber, and as the convection motor rotates, the convection fan rotates and a strong wind. Will generate.

And since the high frequency energy irradiated into the cooking chamber is always irradiated with a certain angle and shape, a tray is installed on the bottom of the cooking chamber or a stirrer pan is installed on the upper surface of the cooking chamber to distribute the high frequency energy evenly to the food.

In the case of the multifunctional microwave oven equipped with the above-described heater, only the high frequency or only the heater and the high frequency and the heater can be used simultaneously by selecting a function. However, when the heater was employed as described above, it was not possible to install a stirrer pan in the upper part of the cooking chamber. This is because, after installing the heater, not only the space of the cooking chamber is small to install the stirrer pan, but also the stirrer cover that protects the stirrer pan is made of a resin material that can transmit high frequency well. In this case, the stirrer and the heater are not simultaneously employed.

Therefore, a stirrer fan is installed only in a microwave oven that does not employ a conventional heater, and a tray and a convection fan are installed in a microwave oven employing a heater, but the convection fan functions only as a hot air circulation. Therefore, in the case of employing a heater, it is common to adopt a high frequency indirect spraying method by a tray.In this case, a convection fan is installed at the rear of the cooking chamber to circulate the heat of the heater, thereby forcing the heat by the wind blown into the cooking chamber. Although the convection fan itself is not only a single function device that has a hot air circulation function, but also the cost of components increases due to the installation, and foods with thick skin such as meat are cooked because the high frequency is distributed by the tray only. It takes a long time, and also has a problem in that the product specifications such as the microwave oven employing only the microwave oven of the microwave oven employing a heater is divided into a number of ways to cause confusion about the product performance to consumers.

Therefore, the present invention provides a convection and stirrer pan at the bottom of the cooking chamber to perform the hot air purifying function and the high frequency dispersion function in consideration of such a conventional problem, thereby reducing the cooking time, reducing the cost, and improving the cooking performance. It is an object of the present invention to provide a microwave oven equipped with a convection and stirrer fan, and the above object is achieved by installing the convection and stirrer fan at the bottom of the tray and rotating the fan by the rotation means.

Hereinafter, the technical configuration and effect of the present invention for achieving the above object will be described in detail with reference to the accompanying drawings.

The present invention is to install a convection pan for giving the oven function in the multi-function microwave oven, as shown in the front cross-sectional view of Figure 1, the convection and stirrer combined fan in the lower tray 40 of the bottom of the cooking chamber 70 10, but the convection and stirrer combined fan 10 is rotated by a separate rotation means from the tray motor 50 to achieve the simultaneous effect of hot air circulation and high frequency dispersion during cooking.

By inserting the convection and stirrer fan 10 in the lower portion of the tray 40 in the above manner, the spin shaft 11 of the convection and stirrer fan 10 is inserted into the tray motor shaft 51. By the bearing between the tray motor shaft 51 and the spin shaft 11, the tray 40 and the convection and stirrer fan 10 having different rotational speeds are rotated to perform their respective roles. .

The rotation means of the convection and stirrer combined fan 10 is composed of a fan motor 20 and a belt 30, and the spin shaft 11 and the fan motor 20 are connected to the belt 30 by a fan. By transmitting the power of the motor 20 to the belt 30, the convection and stirrer combined fan 10 is rotated by the rotational force of the belt 30.

Although the fan motor 20 adopts any one of the same direction, the opposite direction, and the forward / reverse rotation as the rotational direction of the tray 40, the dispersion effect of the high frequency is almost the same. If the fan motor 20 is adopted, the dispersion efficiency of the high frequency may be better than that of other types.

Referring to the operation and effect according to the configuration of the present invention described above are as follows.

The microwave oven according to the present invention includes a heater 80 installed on the upper part of the cooking chamber 70, a tray 40 for placing foods installed on the bottom of the cooking chamber 70, and a convection fan that is conventionally installed on the rear plate. The convection and stirrer fan 10 is installed instead, and when the microwave oven is driven, the high frequency is irradiated while the tray 40 is rotated. In this case, when the function of the heater 80 is selected The high heat is generated in the heater 80, the high heat is circulated in the cooking chamber 70 by the convection and stirrer combined fan 10 and at the same time diffuse the high frequency.

The above description will be described by dividing the convection and stirrer combined fan 10 of the present invention into a hot air circulation action and a high frequency jet action through the front view of FIG. 2 and FIG. 3 as follows.

That is, when the microwave oven is driven, the tray motor 50 is driven to rotate the tray 40 and at the same time the fan motor 20 is driven, so that the belt 30 rotates the convection and stirrer combined fan 10. First, according to the hot air circulation, the wind generated by the convection and stirrer combined fan 10 is circulated from the bottom to the top to circulate the heat of the heater 80 installed at the top in the cooking chamber 70. Second, by the high frequency dispersion, the high frequency oscillated from the magnetron is reflected through the wall of the cooking chamber 70 while being irradiated to the cooking chamber 70 through the waveguide 90 or reflected back to the convection and stirrer fan 10 again. Reflected directly on the convection and stirrer fan 10 will cause diffuse reflection.

Therefore, the high frequency of the heater 80 is circulated in the cooking chamber 70 while the convection and stirrer fan 10 is circulated in the cooking chamber 70, and the high frequency can be diffusely reflected without the need for a separate stirrer pan, and the tray 40 is rotated at the same time. This effectively diffuses high frequencies.

As one convection and stirrer combined fan 10 performs the hot air circulation and high frequency dispersion function as described above, the high frequency is further diffused together with the tray 40 in the cooking chamber 70 to improve the Namba reflectance. By relying on the diffuse reflection effect of the tray only takes a long time to heat fish, meat, etc. Also, many components for installing the convention pan, the installation cost is solved to solve the problem that the present invention improves the diffuse reflection rate as described above Therefore, the cooking time can be shortened and the cooking performance can be improved, and the cost reduction can be achieved by reducing the consumable parts according to the convention and the stirrer fan combined use fan 10. Microwave oven performance is further improved as the product specification with only the stirrer fan is integrated and simplified into one product specification. Will confuse the possession of consumers away a very useful approach to devising more doemeurosseo consumers in terms of sales improved linking geodulsu a significant effect on its function.

Claims (1)

In a well-known multifunctional microwave oven in which a tray 50 is rotatably arranged on the bottom of the cooking chamber, and a heater 80 is installed on the top of the cooking chamber, a stirrer combined fan is provided between the tray 50 and the bottom of the cooking chamber 70. The fan shaft 10 is installed on the spin shaft 11 provided outside the tray motor shaft 51, and the spin shaft 11 is a separate fan motor 20 capable of forward and reverse rotation. Microwave oven equipped with a convection and stirrer fan, characterized in that by the rotation by a separate power from the tray motor shaft (51) by.