KR19990028126A - Microwave Rotary Heater - Google Patents

Abstract

The present invention relates to a rotatable heater of a microwave oven. In the related art, a heater is completely fixed to an upper portion of a cooking chamber of a microwave oven or has a structure capable of moving to an upper side or one side of the cooking chamber, whereby food is locally heated. There was this.

Therefore, in the present invention, the terminal portion 110 is penetrated through the upper plate 210, and then inserted through one hole 310 of the bracket 300, and then the driven pulley 111 having a large diameter is formed in the terminal portion 110. The rotating motor 400 installed on the other side of the bracket 300 is installed with a small pulley 410 having a small diameter, and the one side of the peripheral pulley of the driven pulley 410 and the peripheral side of the driven pulley 111 ( The pin pulleys 410 are rotated as the driving pulleys 410 of the rotary motor 400 rotate as the driving pulleys 410 and the driven pulleys 111 connected as the rods 500 rotate. The driven pulley 111 rotates and rotates at a predetermined angle while the main pulley 410 is rotated by the diameter difference, while the heater 100 connected to the driven pulley 111 has one direction in the cooking chamber 200. Radiating heat of the heater 100 which rotates alternately in the other direction and there is a temperature difference for each part Is evenly transmitted to the plant, it is a useful invention which can shorten the cooking time, and further enhance the cooking efficiency.

Description

Microwave Rotary Heater

The present invention relates to a heater installed above the cooking chamber of a microwave oven to cook food as radiant heat with high frequency, and more particularly, a heater installed above the cooking chamber alternately in one direction and the other direction by a rotating motor. By rotating the radiant heat of the heater to be evenly distributed to the food to reduce the cooking time of the food, and relates to a rotary heater of the microwave oven to further improve the food cooking efficiency.

In general, a microwave oven is provided with a magnetron, a high voltage transformer, a high pressure capacitor, etc. in an electric chamber formed on one side, and the high frequency generated by the magnetron is configured to be irradiated into the cooking chamber through a waveguide, and a cooking vessel is provided at the bottom of the cooking chamber. Is provided with a tray on which a tray motor capable of rotating the tray is installed at the bottom of the tray to rotate the cooking vessel placed thereon along the tray, so that the high frequency radiated to the cooking chamber is transmitted to the food in the container. It is configured to heat food evenly.

Microwave ovens use a high-frequency oscillating magnetron to defrost, warm, and cook food, and a heater is installed at the top of the cooking chamber, or a convection fan is installed at the rear to cook in addition to the cooking by the high frequency. It is divided into a multifunctional microwave oven that can combine and five minutes cooking.

In addition, as described above, the microwave oven divided into a single function and a multi-function control panel is installed at one side of the front of the microwave oven to select the high frequency or the strength and strength of the heater and the operation time according to the amount of food. For control, a knob for output adjustment, a knob for timer and a button for door opening are installed.

Therefore, the magnetron oscillates a high frequency corresponding to the strength or weakness for a predetermined time according to the selection of the output knob and the timer knob, and the generated high frequency is irradiated to the food in the cooking chamber through the waveguide to cook or thaw food. Will be done.

And the rear of the electric chamber of the microwave oven is installed by a cooling fan driven by a motor to cool the magnetron installed in the front of the wind generated in the cooling fan, it is configured to flow into the cooking chamber through the intake duct, the inflow into the cooking chamber The wind is configured to discharge steam generated inside the cooking chamber to the outside through an exhaust duct installed on the other side wall of the cooking chamber.

Also, in order to allow the user to check the progress of cooking through the window of the door without having to open the door one by one, the lamp is normally installed in the intake duct or exhaust duct by the lamp holder. The light of the lamp is configured to illuminate the inside of the cooking chamber through the vent hole drilled in the cooking chamber.

On the other hand, in the multi-functional microwave oven, the heater is fixed to the upper part of the cooking chamber to cook food that takes a long time such as meat on the upper part of the cooking chamber, and the surface of the meat is cooked brown with radiant heat emitted from the heater. This is used as an auxiliary heating source together with the high frequency which is a main heating source.

In addition, the cause of heat generation of the heater is provided with a nichrome wire having a large electrical resistance therein. When electricity is applied to the terminal portion of the heater, electrons in the nichrome wire do not proceed properly, and thus the number of collisions with metal atoms is high. The high heat is generated by the collision.

In addition, the heater as described above is horizontally installed at a predetermined distance from the top of the cooking chamber, the terminal portion of the heater penetrates the side plate of the cooking chamber and is connected to the conductor, and the cooking chamber top plate so as to overcome and support the heater's own weight A holder is provided to hang a predetermined portion of the heater.

However, in the above configuration, when the food is placed on the tray because the heater is fixed at the upper part of the cooking chamber, the radiant heat is generated according to the shape of the heater, and the food is locally heated. There was a problem to move evenly to be heated evenly.

Accordingly, as shown in FIG. 1, a microwave oven has been proposed in which the heater 10 can be moved to the upper surface or one side of the cooking chamber 20 to prevent the food from being locally heated. In addition, only the position of the heater 10 has been changed, there is a problem that can not evenly heat the food.

Therefore, an object of the present invention is to solve the above problems, the driven pulley is installed in the terminal portion of the heater installed in the upper part of the cooking chamber, the rotating motor installed on the upper plate of the cooking chamber, the main shaft pulley and then the driven pulley and the main barrel As the pulley is connected as a rod, the heater installed on the upper part of the cooking chamber is repeatedly rotated by a predetermined angle to one side and then reversely rotated by a predetermined angle according to the rotation of the small diameter pulley. It is to provide a rotating heater of the microwave oven to be rotated in the direction, so that the radiant heat of the heater is not even locally transmitted to the food, but evenly transmitted to improve the cooking efficiency of the food.

The object of the present invention is to penetrate the terminal part of the heater installed in the upper part of the cooking chamber of the microwave oven through the upper side of the cooking chamber, and then to be inserted through the hole of one side of the bracket pre-installed in the upper side of the cooking chamber, and then the terminal having a large diameter A pulley is installed, and a rotating motor installed on the other side of the bracket has a small diameter main pulley, and is achieved by allowing both sides of the rod to be pinned respectively on the peripheral side of the main pulley and the peripheral side of the driven pulley.

In the present invention, when cooking food in the cooking chamber, the driving pulley of the rotating motor is rotated by the driving of the rotating motor installed on the upper plate of the cooking chamber, and the driven pulley connected as the driving pulley and the rod rotates. Due to the difference in diameter, the driven pulley is rotated at a predetermined angle while the driven pulley is rotated at a predetermined angle and then rotated back at a predetermined angle, thereby reducing cooking time as the heater connected to the driven pulley rotates in one direction and the other direction in the cooking chamber. , The radiant heat of the heater having a temperature difference for each part is evenly transmitted to the food to further improve the food cooking efficiency, thereby achieving the above object.

BRIEF DESCRIPTION OF THE DRAWINGS The principal part front view which shows the conventional structure.

Figure 2 is an exploded perspective view showing the main portion showing an embodiment according to the present invention.

Figure 3 is a side cross-sectional view showing the main portion of the installation of the present invention.

Figure 4 is a plan view of the main portion showing an embodiment of the operating state according to the present invention.

Figure 5 is a plan view of the main portion showing another embodiment according to the present invention.

* Explanation of symbols for main parts of the drawings

100: heater 110: terminal portion

111: driven pulley 200: cooking chamber

210: top 300: bracket

310: hole 400: rotation motor

410: copper pulley 500: rod

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

That is, Figure 2 is a main part separated perspective view illustrating a rotary heater according to the present invention, Figure 3 is a main sectional side view illustrating the installation state of the present invention, Figure 4 is a main part front view illustrating the operating state of the present invention As illustrated in the present invention, in the installation of the rotary heater on the upper portion of the microwave oven, the terminal unit 110 of the heater 100 passes through the upper plate 210 of the cooking chamber 200, and then the cooking chamber 200. After inserting through the one side hole 310 of the bracket 300 pre-installed in the upper plate 210 of the, and then installing the driven pulley 111 having a large diameter in the terminal portion 110, the other side of the bracket 300 Rotating motor 400 is installed in the small diameter of the main pulley 410 is installed, the driven pulley 111 of the main pulley 410 is characterized in that by connecting the pins of both sides of the rod 500, respectively. .

In the figure, reference numeral 320 is an installation part for mounting the rotary motor 400 formed in the bracket 300, 311 is installed in the hole 310 of the bracket 300, the high frequency is the hole 310 It is a gasket to prevent leakage to the outside through the, 312 is installed on the top of the gasket 311 to prevent the separation of the gasket 311, lubricity to help the terminal 110 of the heater 100 rotate. It is a ring of material.

The present invention is installed on top of the multi-function microwave oven is configured to rotate the heater 100 for cooking food with radiant heat with high frequency to rotate in the cooking chamber 200, the upper plate 210, to evenly distribute radiant heat to the food to cook food. It is to improve the efficiency further.

That is, according to the present invention, a hole 310 is formed at one side of the upper plate 210 of the cooking chamber 200 so that the terminal unit 110 of the heater 100 can be inserted, and the rotating motor 400 may be mounted at the other side. It installs the bracket 300 is configured to the installation unit 320, and penetrates the terminal portion 110 of the heater 100 through the upper plate 210 of the cooking chamber 200 to be inserted into the hole 310 of the bracket 300. The upper surface of the terminal unit 110 is provided with a driven pulley 111, the rotary motor 400 is fixed to the mounting portion 320 formed on the other side of the bracket 300, the rotary motor 400 to the main pulley ( 410 is arranged, the peripheral one side of the driven pulley 410 and the peripheral one side of the driven pulley 111 is connected by pinning both sides of the rod, respectively.

Therefore, when the rotary motor 400 is driven to rotate the heater 100, the main pulley 410 is rotated by the rotary motor 400, and the driven pulley 111 connected with the rod rotates together. In this case, when the main pulley and the driven pulley are engaged with each other without being connected as a rod, the heater 100 rotates only on one side, and the heater 100 continues to rotate in one direction as described above. The wires (not shown) installed in the terminal unit 110 of the 100 may be twisted with each other.

However, the present invention is to solve the above problems, the main pulley 410 installed in the rotary motor 400 is configured to have a small diameter, driven pulley 111 connected to the terminal portion 110 of the heater 100 is the diameter It is configured to be larger than the main pulley 410, the peripheral side of the main pulley 410 and the peripheral side of the driven pulley 111 is rotated to drive the heater 100 by pinning the rod 500, respectively. In the case of driving the motor 400, the driven pulley 111 is rotated by a predetermined angle to one side while the main pulley 410 is rotated by one side and then reversely rotated again by a predetermined angle by the rod 500. The heater 100 connected to the 111 may evenly transmit radiant heat to the food in the cooking chamber 200 while undergoing an iterative process of rotating in one direction from the upper side of the cooking chamber 200 and then rotating in the other direction.

At this time, the method of increasing or decreasing the angle of rotation of the driven pulley 111, that is, the rotational angle of the heater 100 is configured to make the diameter of the main pulley 410 small as described above and the diameter of the driven pulley 111 is increased. The diameter of the main pulley 410 and the driven pulley 111, as illustrated in FIG. 5, in addition to the method of pinning the rod 500 to the peripheral side of the main pulley 410 and the driven pulley 111 by a larger configuration The distance D between one side of the rod 500 pinned to the main pulley 410 and the center of the main pulley 410 in the same configuration as the other side of the rod 500 pinned to the driven pulley 111 and the driven pulley ( The rotation angle of the driven pulley 111 can be reduced by shortening the distance d between the centers of the 111.

On the contrary, when the rotational angle of the driven pulley 111 is to be further increased, the distance D between one side of the rod 500 and the center of the main pulley 410 is determined by the other side of the rod 500 and the driven pulley 111. What is necessary is just to comprise longer than the distance d between centers.

After the terminal unit 110 of the heater 100 passes through the upper plate 210 of the cooking chamber 200 and is inserted into the hole 310 of the bracket 300, the high frequency radiated into the cooking chamber 200 is applied to the bracket ( In order to prevent leakage through the hole 310 of the 300, it is preferable to provide a gasket 311 that blocks high frequency leakage between the terminal portion 110 and the hole 310 of the heater 100.

In addition, after the terminal unit 110 is inserted into the hole 310 of the bracket 300, when the heater 100 is rotated according to the driving of the reverse rotation motor 400, while maintaining the balance of the terminal unit 110, A teflon-based ring 312 of good lubricity is provided between the terminal portion 110 and the hole 310 to prevent separation of the gasket 311 and to facilitate rotation of the terminal portion 110. It is installed on the top of the gasket 311.

Therefore, the heater 100 having a temperature deviation according to each part does not simply transmit radiant heat to the food in a fixed state, but rotates in one direction and the other direction at the top of the food, thereby transferring radiant heat to the food. Local heating can be prevented, and the effect of shortening the cooking time and improving the cooking efficiency can be obtained.

As described above, the present invention is installed in the upper part of the cooking chamber of the multi-functional microwave oven, and in installing a heater for generating radiant heat as an auxiliary heating source together with a high frequency as a main heating source, a driven pulley having a large diameter is provided at the terminal of the heater. In the rotating motor installed on the upper plate of the cooking chamber, a small diameter coarse pulley is laid down, and the coarse pulley and the driven pulley are configured to be pinned by a rod, so that the heater is driven in one direction from the upper side of the cooking chamber by driving the rotating motor. By rotating the predetermined angle and then rotating again in the other direction, the radiant heat is evenly transmitted to the food, thereby preventing the food from being locally heated and reducing the cooking time, and further improving the cooking efficiency of the food. It is a useful invention that can be improved.

Claims (2)

In installing the rotary heater on the upper part of the microwave oven, the terminal unit 110 of the heater 100 passes through the upper plate 210 of the cooking chamber 200, and then temporarily installed on the upper plate 210 of the cooking chamber 200. After inserting through the one side hole 310 of the bracket 300, and the driven pulley 111 having a large diameter is installed in the terminal portion 110, the diameter of the rotating motor 400 installed on the other side of the bracket 300 The small main pulley 410 is installed, the main pulley 410 and the driven pulley 111 is a rotary heater of the microwave oven, characterized in that the pins are connected to each side of the rod 500, respectively. According to claim 1, wherein the diameter of the driving pulley 410 and the driven pulley 111 is configured to be the same, and then pinned as a rod 500, the distance between one side of the rod 500 and the center of the driving pulley 410 ( D) and the rotary type of the microwave oven, characterized in that the rotation angle of the driven pulley 111 can be made larger or smaller by adjusting the distance d between the other side of the rod 500 and the center of the driven pulley 111. heater.