KR19990027214A - Microwave stirrer and manufacturing method - Google Patents

Abstract

The present invention discloses a stirrer for a microwave oven and a method of manufacturing the same. The disclosed invention includes a cooking chamber of a microwave oven, first and second motor shafts embedded in a lower side of the bottom surface of the cooking chamber and protruding upward, trays which are arranged on the first motor shaft and rotate in one direction, In a stirrer of a microwave oven, which is arranged on the second motor shaft and rotates in another direction (or one direction) and disperses microwaves oscillated by a magnetron, the stirrer is configured to hold a holder and microwaves on the second motor shaft. Dispersion of the rotary blade is provided with a single injection molded resin, characterized in that one side of the rotary blade corresponding to the shape of the rotary blade and reflecting the microwave reflecting the microwave.

In addition, the present invention is a reflection member manufacturing step of manufacturing a plate-shaped reflection member having a set shape, a resin injection step of injecting a molten resin after placing the reflection member in the spout of the injection molding machine, and the resin injection step By the stirrer withdrawal step of withdrawing the stirrer made of the reflecting member is inserted to the resin after the completion of the step, and the cooling step of cooling the drawn stirrer after completing the stirrer withdrawal step, It is easy to manufacture a stirrer that rotates when the stove is driven and disperses microwaves emitted by the magnetron.

Description

Microwave stirrer and manufacturing method

The present invention relates to a microwave stirrer and a method for manufacturing the same, and more particularly, to facilitate the manufacturing process of the stirrer which rotates when the microwave is driven and disperses microwaves generated by the magnetron, and maintains a low cost. The present invention relates to a stirrer for a microwave oven and a method of manufacturing the same.

In general, microwaves are cooked by irradiating microwaves oscillated by the magnetron to the workpiece, which is a dielectric material, by inducing heat generation by frictional heat generated in the process of colliding molecules in the workpiece.

The general configuration of such a microwave oven is as shown in FIG.

That is, the cooking chamber 20 is provided inside the main body 10 having an enclosure shape. The cooking chamber 20 maintains its open / closed state by a door 30 provided on one side of the main body 10 to be rotated freely.

A tray 40 in which food is contained or a container in which food is placed is installed at a lower side of the cooking chamber 20, and a tray driving means for rotating the tray 40 in a lower side of the corresponding cooking chamber 20. 50 is installed.

The driving means 50 includes a driving motor 51 embedded in the lower side of the cooking chamber 20 and first and second motor shafts 52 protruding upward from the bottom surface of the cooking chamber 20 and rotating in opposite directions. 53 and the coupler 54 is installed on the first motor shaft 52 and transmits the power of the drive motor 51 to the tray 40.

On the other hand, under the second motor shaft 53, a stirrer 60, which is a metal material for dispersing microwaves, is provided.

As shown in FIG. 3, the stirrer 60 separately separates the rotor blade 62 made of a metal material and a holder 61 made of a non-metal material arranged on the second motor shaft 53. By means of adhesion to a single body.

In the drawings, reference numerals 70 and 71 denote roller supports and rollers which support the lower side of the rotating tray while rolling contacting them.

Therefore, after closing the door 30 with respect to the cooking chamber 20 in the state in which the workpiece is placed on the tray 40, when the microwave is driven, the magnetron not shown is driven and the microwave is oscillated and the driving motor ( 51) is driven.

As described above, when the driving motor 51 is driven, the tray 40 is rotated in one direction by the coupler 54 arranged on the first motor shaft 52, and is forcibly coupled to the second motor shaft 53. The stirrer 60 rotates in the other direction and disperses microwaves oscillated by the rotary blades 62 disposed above and cooks food uniformly.

Of course, the first and second motor shafts 52 and 53 are rotated in different directions and speeds by different gear trains (not shown) installed inside the drive motor 51.

However, the following problems occur in such a stirrer of a general microwave oven.

That is, in order to manufacture a stirrer to disperse the microwaves generated when the microwave oven is driven, the rotor blade 62 and the holder 61 made of different materials are separately manufactured and then integrated with an adhesive.

Therefore, in order to manufacture a monolithic stirrer, since a number of parts are manufactured and a separate process for integrating them is required, there is a problem in that manufacturing cost is increased and productivity is lowered.

Accordingly, an object of the present invention, that is, an object of the present invention is to solve the problems of the conventional microwave stirrer, and to rotate microwaves generated by the magnetron while driving the microwave. The manufacturing process of the stirrer to disperse | distribute is easy, productivity improves, and it provides the stirrer of the microwave oven which maintains a low cost accordingly, and its manufacturing method.

Figure 1 is a schematic diagram showing the internal configuration of a general microwave oven to which the present invention is applied

Figure 2 is an enlarged cross-sectional view showing the tray and the stirrer and the driving means for rotating them in a conventional microwave oven

3 is an exploded perspective view showing a stirrer applied in a general microwave oven

Figure 4 is a perspective view of the stirrer according to the present invention

Figure 5 is an enlarged cross-sectional view showing the line A-A of Figure 4

Figure 6 is a process diagram showing the manufacturing step of the stirrer according to the present invention

Explanation of symbols on the main parts of the drawings

10; Main body 20; cuisine

30; 40. tray

50; Drive means 51; Drive motor

52; First motor shaft 53; Second motor shaft

54; Coupler 60; Stirrer

61; Spark prevention holder member 62; Rotary wing

63; Reflective member

In order to achieve the above object, the present invention is installed in the cooking chamber of the microwave oven, the lower inner side of the bottom surface of the cooking chamber is installed on the first and second motor shaft protruding upward, and the first motor shaft is built in one direction And a stirrer in a microwave oven arranged on the second motor shaft and rotating in another direction (or one direction) and dispersing microwaves oscillated by a magnetron, wherein the stirrer is connected to the second motor shaft. The holder and the rotating blade for dispersing microwaves are provided with a single-piece resin injection molded, and one side of the rotating blade corresponding to the shape of the rotating blade and the reflecting member reflecting the microwave is characterized To provide a microwave stirrer.

In addition, the present invention is a reflection member manufacturing step of manufacturing a plate-shaped reflection member having a set shape, a resin injection step of injecting a molten resin after placing the reflection member in the spout of the injection molding machine, and the resin injection step A microwave oven comprising a stirrer withdrawal step of withdrawing the stirrer made of the reflecting member to the resin after the completion of the step, and a cooling step for cooling the stirrer taken out after completing the stirrer withdrawal step It provides a stirrer manufacturing method of.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention for achieving this object will be described in detail.

1 is a front view showing a schematic configuration of a general microwave oven to which the present invention is applied, and FIGS. 4 to 5 are perspective views and cross-sectional views of a stirrer according to the present invention, and the same reference numerals are used for the same parts and members as in the prior art. .

In other words, the stirrer which is a feature according to the present invention will be described with reference numeral 60 in the same manner as in the prior art, and will be described with reference numeral 63 only for the reflective member.

As shown in the drawing, the cooking chamber 20 is provided inside the main body 10 having a box shape. The cooking chamber 20 maintains its open / closed state by a door 30 provided on one side of the main body 10 to be rotated freely.

A tray 40 in which food is contained or a container in which food is placed is installed at a lower side of the cooking chamber 20, and a tray driving means for rotating the tray 40 in a lower side of the corresponding cooking chamber 20. 50 is installed.

The driving means 50 includes a driving motor 51 embedded in the lower side of the cooking chamber 20 and first and second motor shafts 52 protruding upward from the bottom surface of the cooking chamber 20 and rotating in opposite directions. 53 and the coupler 54 is installed on the first motor shaft 52 and transmits the power of the drive motor 51 to the tray 40.

On the other hand, a stirrer 60, which is a metal material for dispersing microwaves, is provided below the second motor shaft 53, but these configurations are the same as in the prior art.

However, in the present invention, the stirrer 60 includes a holder 61 formed on the second motor shaft 53 and a rotary blade 62 for dispersing microwaves in a single piece of resin by injection molding. It is provided, and on one side of the rotary blade 62 corresponds to the shape of the rotary blade 62, the reflecting member 63 for reflecting the microwave is configured to be out.

Referring to the manufacturing process of the stirrer 60 to satisfy the above requirements step by step.

Reflective member manufacturing stage

A plate-shaped metal sheet is produced by a reflective member having a shape set by a conventional molding method such as extrusion or injection.

Resin injection step

The reflective member produced by the above step is placed in the spout of the injection molding machine, and then the molten resin is injected.

As described above, when the molten resin is injected, the resin is covered over the entire area except one side of the reflective member.

Sucker Withdrawal Step

After completing the above steps, withdraw the stirrer from the spout.

At this time, the stirrer is in a state as shown in FIGS. 4 to 5. That is, the upper surface of the rotating blade of the stirrer is exposed, the surface of the reflecting member is exposed, the rest is embedded in the rotary blade made of resin.

Cooling stage

Production of the stirrer is completed by cooling the stirrer drawn out through the above steps by air cooling and slow cooling, which are common cooling methods.

The function of driving and the stirrer of the microwave oven according to the present invention configured as described above is the same as that of the driving and stirrer of the conventional microwave oven, and thus a separate description thereof will be omitted.

However, a feature of the present invention here is that a stirrer, which is rotated when the microwave is driven and dissipates microwaves oscillated by the magnetron, is made of an integrally molded mold by injection, and a stirrer produced by the mold. The reflecting member made of a metal material which is easy to disperse microwaves is rotated with respect to the rotary blade of the.

Therefore, in order to manufacture a stirrer as in the prior art, the rotor blade made of a metal material and a holder made of a non-metal material must be manufactured separately and then integrated with each other by means of a separate bonding means, and thus, the manufacturing process is cumbersome and the productivity is lowered. The problem is solved.

In addition, the conventional problem of separately manufacturing a plurality of parts by different mechanical devices and then increasing the manufacturing cost of the stirrer by integrating the parts into a single body and manufacturing the stirrer is also solved.

As described in detail above, the present invention facilitates the manufacturing process of the stirrer which rotates when the microwave oven is driven and disperses the microwaves generated by the magnetron, thereby improving productivity, and thus maintaining a low cost. There is a characteristic.

The preferred embodiment of the stirrer according to the present invention and the manufacturing process thereof have been described so far, but various modifications are possible by one of ordinary skill in the art without being limited thereto.

Claims (3)

A cooking chamber of a microwave oven, first and second motor shafts embedded in a lower side of the bottom surface of the cooking chamber and protruding upward, a tray built in the first motor shaft and rotated in one direction, and the second motor shaft In the microwave stirrer which is installed in the second direction (or one direction) and rotates in a different direction (or one direction) and distributes the microwaves oscillated by the magnetron, the stirrer has a holder and a rotary blade for dispersing the microwaves on the second motor shaft. The stirrer of the microwave oven, which is provided with a single-piece resin, and has a reflection member corresponding to the shape of the rotary blade and reflecting microwaves on one side of the rotary blade. The stirrer of claim 1, wherein the reflecting member is a plate metal material. A reflective member manufacturing step of manufacturing a plate-shaped reflective member having a set shape, a resin injection step of placing the reflective member in the spout of the injection molding machine and injecting the molten resin, and after completing the resin injection step to the resin A stirrer withdrawal step of withdrawing a stirrer with a reflective member outwardly; and a cooling step of cooling the withdrawn stirrer after completion of the stirrer withdrawal step. .