KR20030014044A - Microwave oven having toaster - Google Patents

Abstract

PURPOSE: A microwave oven is provided to form a heating chamber and a toaster section in the microwave oven without enlarging a size of the microwave oven by utilizing a space of the microwave oven. CONSTITUTION: A microwave oven includes a cavity assembly having a heating chamber and an outer casing forming an external shape of the microwave oven. The microwave oven has a toaster casing(22) installed between the outer casing and the heating chamber. An inlet(23) of the toaster casing(22) is formed at an upper surface of the outer casing. A heater is installed in the toaster casing(22) in order to heat bread. A tray is rotatably installed in the toaster casing(22) so as to place bread therein. A pinion section is formed at one side of the tray. A reversible gear is engaged with the pinion section.

Description

Microwave oven with toaster {Microwave oven having toaster}

The present invention relates to a microwave oven, and more particularly, to a microwave oven having a function capable of sufficiently securing the use as a whole by incorporating a toaster portion configured to bake bread by a heater.

A general microwave oven is an apparatus for heating a heating object using a microwave. Such a microwave oven is inadequate to perform a function as a toaster for baking bread, due to the heating characteristics of the microwave. That is, due to the heating characteristics of the microwaves penetrating the inside of the food to heat the food, there is an disadvantage that is unsuitable for the heating of the toast, the surface should be heated brown. Therefore, in the microwave oven which is an apparatus for heating food, it is natural that it is more preferable to have a toaster function which can bake bread.

In order to meet such a demand, a microwave oven having a toaster function has been disclosed by Japanese Patent Laid-Open No. 1991-271630. According to such a prior art, a toaster that can be baked by putting bread on one side of the upper surface of the outer casing of the microwave oven is provided. However, in order to configure the bread to be baked on the upper surface of the microwave oven in this way, since the space for the bread can be separately provided between the heating chamber and the cavity, there is a disadvantage that the size of the microwave as a whole becomes large. .

In view of such a conventional technology, it is preferable that the microwave oven has a function as a toaster to bake bread, and that it can be miniaturized irrespective of the overall size while having such a function. It can be said.

An object of the present invention is to provide a microwave oven having a function as a toaster capable of baking bread.

Another object of the present invention is to provide a microwave oven having a function as a toaster and utilizing a space that is not necessary in a microwave oven, so that a sufficient heating chamber and a toaster portion can be mounted without expanding the size of the appearance. It is.

1 is an external perspective view of the present invention microwave oven.

Figure 2 is an exploded perspective view of the microwave oven of the present invention.

Figure 3 is an illustration of a toaster casing of the present invention.

Figure 4 is a perspective view of the toaster portion of the present invention.

Figure 5 is a cross-sectional view of the heating state of the toaster of the present invention.

Figure 6 is a cross-sectional view of the discharge state of the toaster portion of the present invention.

Figure 7 is a flow chart showing the operation sequence of the toaster portion of the present invention.

Explanation of symbols on the main parts of the drawings

10 ..... microwave oven 12 ..... top

20 ..... Toaster section 22 ..... Toaster casing

23 ..... Entrance 24 ..... Tray

30 ..... Heater

According to the present invention for achieving the above object, in the microwave oven including a cavity assembly having a heating chamber for heating food, and an outer casing surrounding the cavity assembly to form the appearance of the microwave oven; A toaster casing having an inlet on an upper surface of the outer casing and installed between the outer casing and the heating chamber; A heater installed inside the casing to heat bread; A tray having a pinion portion formed on one side of the casing so as to be able to move up and down inside the casing; It is characterized in that it comprises a gear meshing with the pinion portion, and the forward and reverse rotation by the drive motor.

And it further comprises a guide means for guiding this when the tray is raised and lowered, the guide means, the guide groove formed on one side of the tray, the guide groove is accommodated to guide the sliding in the vertical direction and protruded to one side of the casing It consists of a moving guide.

And it is shown an embodiment further comprising a switching means for generating a signal by the tray is in contact with the top dead center and the bottom dead center of the tray.

According to the present invention as described above, the toaster function is added to the microwave oven to improve the usability, and at the same time, the toaster portion is most efficiently installed by using the space between the outer casing and the heating chamber.

Next, the present invention will be described in more detail with reference to the embodiments shown in the drawings.

As shown in FIG. 1, according to the present invention, a toaster portion 20 that can be baked by inserting sliced bread B into the upper surface 12 of the microwave oven 10 is provided. The toaster unit 20 is provided in a space that is formed between the heating chamber of the microwave oven and the outer casing, and this configuration will be described with reference to FIG. 2.

The heating chamber 32 is provided in the cavity assembly 30 of a microwave oven. In addition, one side of the cavity assembly 30 is provided with an electric chamber 34 for embedding electrical components, and the cavity assembly 30 is covered by an outer casing 11.

Therefore, when the outer casing 11 is coupled to the cavity assembly 30, a predetermined space is provided between the side wall 13 of the outer casing 11 and the side wall 33 of the heating chamber 32. According to the present invention, a toaster portion 20 capable of baking sliced bread is to be formed between the side wall 33 of the heating chamber 32 and the side wall 13 of the outer casing 11.

The toaster part 20 which concerns on this invention contains the toaster casing 22 which has the inlet 23 in the upper surface 12 of the outer casing 11. As shown in FIG. 3, a heater 30 for applying heat to the bread is provided inside the toaster casing 22. As shown, the heater 30 includes the heating wire 32 wound around the support plate 34, and a terminal 36 for applying electricity to the heating wire 32 is connected. In such a configuration, the heater 30 is provided on both side walls of the toaster casing 22 so that both sides of the bread can be simultaneously heated.

Next, the internal configuration for putting or withdrawing bread in the toaster casing 22 will be described with reference to FIGS. 4 to 6.

As shown in the figure, a tray 24 for placing bread on the inside of the casing 22 is provided. The tray 24 is a portion on which bread is placed, and a pinion portion 24b is molded outside the side wall 24a. The pinion portion 24b is meshed with a gear Mg which is rotated by the drive motor M, and the pinion portion 24b is engaged with the pinion portion 24b by the rotation of the gear Mg. Will move up and down. Accordingly, depending on whether the drive motor M is driven in reverse rotation, the tray 24 may vertically move up and down. The drive motor M is installed on the motor bracket 28 provided on one side of the casing 22.

At this time, in order to guide the lifting and lowering of the tray 24 moving in the vertical direction, a moving guide 26 is formed on the corresponding side wall of the casing 22. The movement guide 26 has a shape that is protruded and formed in a vertical direction, for example, and the movement guide 26 is accommodated in the sidewall 24a of the tray 24 so that the movable guide groove 24c is slidable. It can be implemented by being molded. Alternatively, as opposed to the illustrated embodiment, it is also possible to form a guide groove on the side wall of the casing 22 and to form a guide groove in the vertical direction on the side wall 24a of the tray 24.

When the tray 24 moves up and down by the moving mechanism, a pair of micro switches Msa and Msb moves up and down the tray 24 to detect the positions of the top dead center and the bottom dead center of the tray. Installed in Therefore, when the side wall 24a of the tray 24 moves upward by the driving motor M, it comes into contact with the microswitch Msa installed on the upper side. When one side of the side wall 24a of the tray 24 comes into contact with the micro switch Msa, since the tray 24 substantially reaches top dead center, the micro switch Msa generates a constant signal. The rotation of the drive motor M is stopped.

When the tray 24 moves downward, one side portion of the side wall 24a of the tray comes into contact with the micro switch Msb provided below. Accordingly, by the signal of the micro switch Msb, the rotation of the driving motor M is stopped so that the tray 24 stops at the position without moving further downward.

Next, a driving process of the toaster unit according to the present invention configured as described above will be described with reference to FIG. 7.

Put the toast (B) in the toaster portion 20 of the present invention, the tray 24 is raised, and then the toaster start key is turned on (S110), while the relay of the driving motor M is turned on, the driving motor M is driven. While the tray 24 is lowered (S112). The tray 24 descends to determine whether the microswitch Msb is in contact with the lower part (S114). When the tray 24 is in contact, the drive motor M is turned off, and the heater 30 inside the toaster is heated while being heated. It begins.

Then, it is determined whether a predetermined time has elapsed for heating the toast (S118). When the set time has elapsed, the power of the heater 30 is turned off, and the tray 24 moves upward while the driving motor M is rotated in reverse. do. It is determined whether the tray moving to the upper side is in contact with the upper micro switch Msa (S122), when it is contacted, the driving motor M is turned off (S124), and a signal indicating that the toast is completed is generated (S126). This completes the toast heating process.

According to the present invention as described above, it can be seen that the basic technical idea is to form a toaster portion between the heating chamber and the outer casing, and to configure the toaster to be heated by a tray that moves up and down inside the toaster portion. And within the scope of the basic technical idea according to the present invention, of course, other modifications are possible to those of ordinary skill in the art.

According to the present invention as described above, it can be seen that there is a convenience in using the slice bread can be baked in a microwave oven. Therefore, in addition to the heating by microwave, the bread can be baked most preferably by the heater, it can be expected that the advantage that can actually widen the use of the microwave oven.

And according to the present invention, by installing the toaster portion for baking bread between the heating chamber and the outer casing, it is expected that the advantage that the existing space can be utilized without forming a separate space for the installation of the toaster portion.

Claims (3)

A microwave oven including a cavity assembly having a heating chamber for heating food and an outer casing surrounding the cavity assembly to form an exterior of the microwave oven; A toaster casing 22 having an inlet 23 on an upper surface of the outer casing and installed between the outer casing and the heating chamber; A heater installed inside the casing to heat bread; A tray which is installed in the casing so as to be put up and down on bread, and having a pinion portion 24b formed on one side thereof; And a gear (Mg) meshing with the pinion and rotating forward and reverse by a drive motor. The method of claim 1, further comprising a guide means for guiding it when the tray is raised and lowered, the guide means, the guide groove formed on one side of the tray, the guide groove is accommodated to guide the sliding in the vertical direction and casing Microwave oven, characterized in that consisting of a moving guide protruded to one side of the. The microwave oven according to claim 1 or 2, further comprising switching means which are provided at the top dead center and the bottom dead center of the tray to generate a signal when the tray is in contact with the tray.