KR100553046B1 - Microwave oven - Google Patents

Abstract

The present invention relates to a microwave oven, and more particularly, to make it easier to install electrical components installed inside the electric compartment of the microwave oven. The microwave oven according to the present invention comprises: an outer case 100 which protects the inside while forming an appearance of the microwave oven; A base plate 110 forming a lower exterior of the microwave oven; A cavity 130 installed between the outer case 100 and the base plate 110, into which food to be cooked is put; A front plate 150 installed in front of the cavity 130; A back plate 170 installed at the rear of the cavity 130; An electrical equipment room 200 having a plurality of electrical equipment parts provided therein; At least one of the plurality of electrical components installed in the electrical equipment room 200 is configured to include a sub-plate 300 is tightly fixed. In this way, the assembly process of the microwave oven is simplified, and there is an advantage that the assembly productivity is improved.

Microwave Oven, Electric Room, Subplate, Rail

Description

Microwave oven

1 is a perspective view showing a microwave oven according to the prior art.

Figure 2 is a partial perspective view showing the electric compartment of the microwave oven according to the prior art.

Figure 3 is a perspective view showing the configuration of a microwave oven according to the present invention.

Figure 4 is a perspective view of the electric room of the present invention microwave oven.

Figure 5 is a perspective view showing a subplate inserted into the electric room of the microwave oven of the present invention.

Figure 6a is a partial perspective view showing a front rail for guiding the installation of the subplates constituting the microwave oven of the present invention.

6B is a partial perspective view of the rear rail;

Explanation of symbols on the main parts of the drawings

100: outer case 110: base plate

111: front bent portion 111a: air intake

130: cavity 150: front plate

170: back plate 200: battlefield

210: transformer 230: magnetron

250: blower fan 270: capacitor

290: Barrier 300: Subplate

310: flat part 310a: screw ball

310b: communication hole 330: fixed end

330a: fixing groove 330b: fastener

410: front rail 430: rear rail

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven, and more particularly, to an electric component installed inside an electric compartment of a microwave oven more easily, while an external air is easily sucked into the electric compartment from the front of the microwave oven. It's about the range.

2. Description of the Related Art In general, a microwave oven is a device for cooking food by generating microwave waves in a magnetron by supplying electric current, and irradiating the microwaves with heated objects such as food.

Such a microwave oven is classified into a household microwave oven having a small magnetron and a commercial microwave oven having a large or a plurality of magnetrons. In addition, since commercial microwave ovens are mainly used in convenience stores with frequent use, or in restaurants where food is to be cooked within a short time, it is generally required that a relatively high output is used compared to a home.

Hereinafter, the configuration of a commercial microwave oven as described above (hereinafter referred to as a microwave oven) will be described in detail with reference to the accompanying drawings. 1 is a perspective view illustrating a microwave oven according to the prior art, and FIG. 2 is a partial perspective view showing the electric compartment of the microwave oven according to the prior art.

As shown, the microwave oven includes an outer case 10 forming an exterior, a base plate 11, a cavity 13 into which food to be cooked is put, a cavity 13, a front plate 15, and a back plate. (Back Plate 17), and the electrical equipment chamber 20 is provided with a plurality of electrical components for operating the cavity (13).

The base plate 11 is located below the cavity 13, and one side thereof forms a bottom surface of the electric compartment 20. A plurality of suction ports 11a for perforating outside air are formed in the bottom surface of the base plate 11 on the electrical cabinet 20 side.

And the outer surface of the base plate 11 is provided with a support foot (11b) so that the lower surface of the microwave oven is spaced a predetermined height from the bottom surface.

The cavity 13 is a space in which food is added and cooked. The microwave 13 is irradiated with microwave waves generated by the electric component to be described below.

The front plate 15 forms a front surface of the cavity 13, and has a substantially rectangular frame structure so that the space inside the cavity 13 can be opened to the outside.

The back plate 17 is located at the rear of the cavity 13, and one side of the back plate 17 forms a rear surface of the electric compartment 20. In addition, the back plate 17 is perforated with an exhaust port (not shown) for discharging the air of the electric compartment 20 to the outside of the microwave oven.

In the electric compartment 20, a plurality of electric components such as a transformer 21, a magnetron 23, a blower fan 25, and a capacitor 27 are installed.

First, the transformer 21 converts a commercial voltage into a high voltage to supply the magnetron 23, and more specifically, the base plate 11 that forms the bottom surface of the electric chamber 20. It is fixed to the upper surface by fastening members such as screws.

The magnetron 23 is provided on the upper side of the electrical chamber 20, and generates a high frequency of about 2000 megahertz using the high voltage supplied from the transformer 21. The high frequency wave is irradiated into the cavity 13 through the waveguide 13a mounted along the upper and lower surfaces of the cavity 13.

The blower fan 25 is provided below the electric chamber 20 and near the inlet port 11a of the base plate 11. The blower fan 25 is composed of a fan housing 25a and a blower fan (not shown) that rotates inside the fan housing 25a, and the blower fan is axially coupled to the fan motor 25b. At this time, the air intake side of the fan housing 25a is directed to the inlet 11a of the base plate 11, and the outlet side is opened to the transformer 21 side.

The barrier 29 is provided in the longitudinal direction in the electric compartment 20 in which electric components, such as the transformer 21, the magnetron 23, the blower fan 25, and the capacitor 27, are installed. More specifically, the barrier 29 is installed between the transformer 21 and the blower fan 25.

As shown in FIG. 2, the barrier 29 separates the battlefield 20 from the front and the rear. A predetermined blower 29a is formed at one side of the barrier 29, and the blower 29a corresponds to the outlet of the fan housing 25a. That is, the air blown by the blower fan 25 is blown to the rear of the battlefield 20 through the blower port 29a of the barrier 29.

On the other hand, a control panel 30 for displaying the state of the cavity is provided at the front of the microwave oven, more precisely, at the front of the front plate 15.

And the door 40 is provided in the front of the cavity 13. The door 40 selectively opens and closes the cavity 13 and prevents microwave waves radiated from the cavity 13 from spreading to the outside.

Looking at the air flow, that is, the intake and discharge of air in the microwave oven configured as described above are as follows.

First, when the fan motor 25b is started by the electrical signal, the blowing fan coupled to the fan motor 25b is rotated. Rotation of the blower fan is caused by the suction side of the fan housing 25a being opened toward the suction port 11a of the base plate 11 so that the outside air of the lower portion of the microwave oven is suction port 11a of the base plate 11. ) To be sucked into the battlefield room 20 through. The outside air sucked in this way is blown to the rear of the electric compartment 20, that is, the transformer 21, through the outlet of the fan housing 25a and the air vent 29a of the barrier 29.

At this time, in the barrier 29 installed between the transformer 21 and the blower fan 25, the air blown through the outlet of the fan housing 25a flows backward to the front of the electric compartment 20, that is, to the blower fan 25. To prevent them.

As described above, the outside air sucked into the electric chamber 20 is directly blown toward the heated transformer 21 in the process of converting the commercial voltage into the high voltage. In this process, air is cooled after the transformer 21 is discharged to the outside of the microwave oven through the exhaust duct (D). On the other hand, a part of the air passing through the transformer 21 is guided by the inclined surface of the barrier 29 and through the inlet port (not shown) which is formed in the cavity 13 on the right wall surface of the cavity 13. Flows inside.

However, the conventional microwave oven as described above has the following problems.

The transformer 21 and the blower fan 25 are fixed to the inside of the electrical equipment chamber 20, more specifically, to the upper surface of the base plate 11. In addition to the cumbersome work of inserting a hand or a drive and tightening a screw, the work time is increased and the assembly productivity of the microwave is lowered.

In addition, in order for the outside air to flow through the microwave oven, air may be introduced only when a predetermined interval is maintained between the inlet port 11a of the base plate 11 and the bottom surface. Therefore, in order to maintain the gap between the base plate 11 and the bottom surface, the support feet 11b should be provided at four corners of the outer surface of the base plate 11.

Such a separate support foot 11b has a problem in that a material cost rises and a process of fixing the support foot 11b to the base plate 11 leads to a problem that the assembly process of the microwave oven becomes complicated.

In particular, considering that such a microwave oven is used commercially, the height is increased by the support feet (11b), there is also a problem that the space utilization of the place where the microwave oven is used.

In addition, since the outside air suction in the above structure depends on the inlet 11a of the base plate 11, the inflow of air sucked into the microwave oven is not sufficient to cool the electric parts of the electric compartment 20. There is also.

An object of the present invention is to solve the problems in the prior art as described above, to facilitate assembly of the electrical components provided in the electrical equipment room.

Another object of the present invention is to allow a large amount of air to be sucked through the front of the microwave oven.

It also aims to lower the height of the microwave oven.

Microwave oven of the present invention for achieving the object of the present invention as described above, the outer case and at the same time to protect the interior; A base plate forming a lower appearance of the microwave oven; A cavity installed between the outer case and the base plate, into which food to be cooked is put; A front plate installed in front of the cavity; A back plate installed at the rear of the cavity; An electrical equipment room having a plurality of electrical components provided therein; At least one of the plurality of electrical components installed in the electrical equipment room is configured to include a sub-plate that is tightly fixed.

The subplate is preferably installed at the lower side of the battlefield chamber spaced apart from the upper surface of the base plate by a predetermined height, one end of the subplate is fixed to the rear surface of the front plate, the other end is fixed to the front of the back plate This is preferred.

In addition, at least one electric component and a barrier for partitioning the electric compartment may be fixed to an upper surface of the subplate, and the electric component preferably includes a blower fan that generates an airflow inside the microwave oven.

In addition, the electric component is most preferably a blower fan for generating an air flow in the microwave oven, and a transformer for converting a commercial voltage into a high voltage.

On the other hand, the microwave oven of the present invention is provided between the outer case and the base plate forming the outer surface of the oven while protecting the interior, and the outer case and the base plate to form the outer surface of the microwave oven, to be cooked therein The electrical equipment is provided with a cavity into which food is fed, a front plate installed at the front of the cavity, a back plate installed at the rear of the cavity, and a plurality of electrical components controlling the cavity therein; At least one or more of a plurality of electrical components installed in the electrical equipment room are configured to include a sub-plate tightly fixed; The base plate is characterized in that the air inlet for perforating the outside air is sucked into the interior of the electrical compartment.

The air suction port is formed at the front end of the base plate, it is preferable that the air suction port is formed in the front bent portion to open to the front.

The subplate may be installed at the lower side of the electric compartment while being spaced apart from the upper surface of the base plate by a predetermined height, and one side of the subplate may be sucked into the blower fan through the air inlet to the lower side of the subplate. More preferably, communicating holes are formed.

The microwave oven of the present invention is provided between the outer case and the base plate forming the outer surface of the microwave oven while forming the exterior and between the outer case and the base plate, and the food to be cooked therein. A cavity to be introduced, a front plate installed at the front of the cavity, a back plate installed at the rear of the cavity, an electrical equipment chamber having a plurality of electrical components for controlling the cavity therein, and At least one of the plurality of electrical components installed in the electrical equipment room is composed of a sub-plate tightly fixed; Between the front plate and the back plate is characterized in that the guide means for guiding the insertion of the sub-plate into the electric compartment.

The guide means is preferably configured to include a front rail formed on the back of the front plate, and a rear rail formed on the front of the back plate, the front rail is formed integrally bent from the front plate, the rear rail is a back plate More preferably, they are bent from and formed integrally.

The front rail and the rear rail may be formed by fixing a separate member to the rear surface of the front plate and the front of the back plate.

Hereinafter, with reference to the accompanying drawings, a microwave oven of the present invention as described above. 3 is a perspective view showing the configuration of a microwave oven according to the present invention, Figure 4 is a perspective view showing the electric chamber of the present invention microwave oven. 5 is a perspective view illustrating a subplate inserted into an electric compartment of the microwave oven according to the present invention. 6A is a partial perspective view showing a front rail for guiding installation of a subplate constituting the microwave oven of the present invention, and FIG. 6B is a partial perspective view showing a rear rail.

As shown in FIG. 3, the microwave oven according to the present invention includes an outer case 100 that forms an exterior, a base plate 110, a cavity 130, a front plate 150, a back plate 170, It is comprised by the battle-room 200. And the sub-plate 300 is installed below the interior of the electric room 200 is included.

The base plate 110 is located below the cavity 130 and is composed of a substantially rectangular plate. A front bent part 111 is bent upward at the front end of the base plate 110, and an extension part (not shown) is formed at an upper end of the front bent part 111.

As described above, the front bent part 111 is formed with a perforated air inlet 111a through which air is sucked down the blower fan of the electric room, which will be described below. The air inlet 111a is the front bent part 111. The state is formed along a plurality.

Therefore, the plurality of air suction holes 111a formed in the front bent part 111 are opened toward the front.

On the other hand, the air filter 111b is installed in front of the air inlet 111a as described above. The air filter 111b performs a role of filtering foreign matter contained in the air sucked into the air inlet 111a, and when it gets dirty during use, is removed by washing and then remounted.

The cavity 130 has a predetermined volume so that food is introduced into the cavity 130, and a door 40 is installed at the front thereof to selectively open and close the cavity 130.

The cavity 130 is installed above the base plate 110, the front is mounted on the upper surface of the extension of the base plate 110, the rear is fixed to the front of the back plate to be described later.

When the cavity 130 is placed on the extension of the base plate 110 as described above, a predetermined gap is formed between the top surface of the base plate 110 and the bottom surface of the cavity 130. The gap is formed by the height of the front bent portion 111 is bent upward. In addition, the interval between the base plate 110 and the cavity 130 is such that the outside air is sucked into the microwave oven through the air inlet 111a formed in the front bent portion 111 of the base plate 110. do.

The front plate 150 forms a front surface of the cavity 130, and a fixed end (150a shown in FIG. 6A) is formed at a lower end of the front plate 150. The fixed end 150a is fixed to an extension of the base plate 110 by screws or welding.

Therefore, when the fixing end 150a of the front plate 150 is fixed to the upper surface of the extension of the base plate 110, the front lower surface of the cavity 130 is not the extension of the base plate 110. It is to be seated on the upper surface of the end (150a).

The back plate 170 is installed at the rear of the cavity 130, the lower end is coupled to the rear end of the base plate 110.

As described above, when the base plate 110, the front plate 150, and the back plate 170 are installed around the cavity 130, a predetermined electric field chamber 200 is provided in the right side of the cavity 130. Is formed. That is, the lower surface of the electrical compartment 200 is the right upper surface of the base plate 110, the left surface is the right wall surface of the cavity 130, the front surface is the right rear surface of the front plate 150, the rear surface of the back plate 170 This is done by each of the right front.

In the electrical equipment room 200, a plurality of electrical components for controlling the operation of the cavity 130 are provided.

Looking in more detail with reference to Figure 4 the inside of the electric room 200, the magnetron 230 is provided on the right side wall of the cavity 130 to generate a high frequency by receiving a high voltage from a transformer to be described later. . The waveguide T is provided above the magnetron 230, and more specifically, on the upper surface of the cavity 130. The waveguide T serves to guide the microwave wave generated by the magnetron 230 to the outer surface of the cavity 130, and is further installed below the cavity 130. When the waveguides T are respectively provided above and below the cavity 130, the microwave waves scanned into the cavity 130 are simultaneously scanned from above to below and upward from below. Therefore, microwaves can be injected in a larger amount into the cooked food inside the cavity 130, thereby allowing food to be cooked at a faster time.

On the other hand, the transformer 210 is installed on the right side of the electric chamber 200 below, based on the barrier 290 to be described below in more detail. The transformer 210 serves to convert a commercial voltage into a high voltage.

The size of the transformer 210 varies depending on the capacity of the cavity. In other words, when the capacity of the cavity increases, the transformer 210 becomes a large capacity or two or more.

And the magnetron 230 is installed on the upper side of the transformer 210, more specifically, the upper wall of the electrical equipment room 200, the magnetron 230 is 2000 MHz by using the high voltage generated by the transformer 210 The microwave wave is generated. The microwave wave generated in the magnetron 230 is transmitted to the cavity 130 along the waveguide (T).

On the other hand, the blower 250 is provided on the left side of the barrier 290 to be described below. The blower fan 250 serves to suck air from the outside of the microwave oven and blow the air into the electric compartment, and is fixed to the upper left side of the subplate 300 to be described below.

The blower fan 250 is composed of a fan housing 250a and a blowing fan (not shown) that rotates inside the fan housing 250a, and the blowing fan is axially coupled to the fan motor 250b. At this time, the air intake side of the fan housing 250a faces downward of the subplate 300 to be described below, and the outlet side is opened to the transformer 210 side.

A capacitor 270 is installed at the rear of the transformer 210. The capacitor 270 is a kind of capacitor that maintains a high voltage to the magnetron 230.

A barrier 290 is formed between the transformer 210 and the blower fan 250 as described above. The barrier 290 prevents the wind blown from the blower fan 250 to flow back to the front of the battle chamber 200. The barrier 290 is installed because the wind blown by the blower fan 250 is heated in the process of cooling the transformer 210.

A plurality of electrical components configured as described above, that is, the transformer 210, the blower fan 250, and the capacitor 270, the barrier 290 are each closely fixed to the upper surface of the sub-plate 300 to be described later It is a state.

The subplate 300 is provided between the front surface of the back plate 170 from the rear surface of the front plate 150. The transformer 210 and the capacitor 270 are fixed to the upper right side of the subplate 300 by a screw. And the blower fan 250 is fixed to the upper left side. The barrier 270 is fixed between the transformer 210 and the blower fan 250.

Looking at the configuration of the sub-plate 300 in more detail with reference to Figure 5 as follows.

The subplate 300 is bent downward along the front end of the planar portion 310 having a substantially rectangular shape corresponding to the distance between the front plate 150 and the back plate 170, and the planar portion 310. It is composed of a fixed end 330.

The flat part 310 is provided with a plurality of screw holes 310a for fixing the transformer 210, the blower fan 250, the barrier 270, and the capacitor 290.

The fixing groove 330a is recessed in an approximately intermediate position of the fixed end 330, and a fastening hole 330b is formed in the fixing groove 330a.

As described above, the fastening hole 330b is formed in the fixed recess 330a in which the screw is fastened so that the head of the screw does not protrude to the outer surface of the fixed end 330 after the screw is fastened.

A communication hole 310b is formed at a left side of the flat part 310, that is, at a position where the blower fan 250 is installed. The communication hole 310b is to allow the inlet of the blower fan 250 and the fan housing 250a to be opened downward, and the air below is sucked into the blower fan 250 through the communication hole 310b. do.

Hereinafter, the sub-plate 300 in which the transformer 210, the blower fan 250, the capacitor 270, and the barrier 290 are fixed as described above will be described.

First, as illustrated in FIGS. 6A and 6B, a front rail 410 is formed on a rear surface of the front plate 150, and a rear rail 430 is formed on a front surface of the back plate 170.

The front rail 410 is formed integrally by bending the lower side of the front plate 150 to the rear. However, the front rail 410 is formed as a separate structure, it may be fixed to the rear surface of the front plate 150 by a fastening means.

The rear rail 430 is integrally formed by bending the lower side of the back plate 170 forward. Of course, the rear rail 430 may also be formed as a separate structure and then fixed to the front surface of the back plate 170 by a fastening means.

The front rail 410 and the rear rail 430 are configured to face each other, the distance therebetween corresponds to both ends of the subplate (300). However, it is easy for the distance between the ends of the rails 410 and 430 to be smaller than at least the size of both ends of the subplate 300. This is to prevent the assembling work from falling downward when the subplate 300 is placed between the front rail 410 and the rear rail 430.

Therefore, as described above, the front end 410 and the rear rail 430 is formed on the front plate and the back plate, respectively, the left end of the sub plate 300 on the upper surface of the front rail 410 and the rear rail 430 When the subplate 300 is pushed to the left in the seated state, the transformer 210, the blower fan 250, the capacitor 270, and the barrier 290 are inserted into the electric chamber 200 at once.

Looking at the process of inhaling air into the microwave oven by being provided with the sub-plate 300 as described above are as follows.

When the fan motor 250b is rotated by the electric signal, the blowing fan is rotated in the fan housing 250a. At this time, the air below the subplate 300 is sucked into the fan housing 250a through the inlet of the fan housing 250a.

On the other hand, the air is sucked under the subplate 300, the air inlet 111a is formed in the front bent portion 111 of the base plate 110, the upper surface and the cavity ( The predetermined interval is formed between the lower surfaces of 130. That is, the air sucked through the air inlet 111a is introduced into the sub plate 300 through the gap between the base plate 110 and the cavity 130.

As described above, it can be seen that the present invention makes the basic idea that a plurality of electrical components are assembled on the upper surface of the subplate.

Many modifications are possible to one skilled in the art within the scope of the basic idea of the present invention.

According to the present invention as described above, since the transformer, blower fan, barrier, and capacitor provided in the electrical equipment room are assembled in the subplate rather than in the electrical equipment room, there is an advantage of facilitating the assembly process.

In addition, the subplate in the state where the electrical components are assembled as described above can be inserted into the electrical compartment, leading to the advantage of improving the assembly of the microwave oven.

Since the microwave oven of the present invention sucks air from the front, it is possible to suck a larger amount of external air.

In addition, when the outside air can be sucked from the front, there is no need to separate the bottom surface of the microwave oven from the bottom surface, and the support feet are unnecessary. Therefore, there is an advantage that the material cost by the support feet is reduced, and the assembly process is simplified.

If the support foot is deleted, the height of the microwave oven is lowered, and thus, the effect of increasing the space utilization of the place where the microwave oven is installed is also expected.

Various effects as described above allow a microwave oven to be manufactured at a lower cost and in a shorter time.

Claims (13)

delete An outer case which protects the inside of the microwave oven while forming the exterior of the microwave oven, a base plate which forms the bottom exterior of the microwave oven, and is installed between the outer case and the base plate, into which food to be cooked is put. An electrical equipment room including a beater, a front plate installed at the front of the cavity, a back plate installed at the rear of the cavity, and a plurality of electrical components controlling the cavity, and the electrical equipment room A subplate on which at least one or more of the plurality of electrical components provided therein is mounted; And the subplate is installed under the electric compartment while being spaced apart from the upper surface of the base plate by a predetermined height. The microwave oven according to claim 2, wherein one end of the subplate is fixed to the rear surface of the front plate and the other end is fixed to the front surface of the back plate. The microwave oven according to claim 2, wherein at least one electric component and a barrier partitioning the electric compartment are fixed to an upper surface of the subplate. 5. The microwave oven according to claim 4, wherein the electric component includes a blower fan for generating an airflow inside the microwave oven. The microwave oven according to claim 4, wherein the electric component is a blower fan for generating an air flow in the microwave oven, and a transformer for converting a commercial voltage into a high voltage. delete An outer case which protects the inside of the microwave oven while protecting the inside thereof, a base plate which forms a lower outer surface of the microwave oven, and is installed between the outer case and the base plate, in which food to be cooked is put. A beater, a front plate installed at the front of the cavity, a back plate installed at the rear of the cavity, an electrical equipment chamber having a plurality of electrical components for controlling the cavity therein, and an upper surface of the base plate. A subplate which is spaced upwardly and is equipped with a plurality of electrical components for supplying microwaves; The front end of the base plate is a microwave oven, characterized in that the perforated air inlet is formed to be opened to the front so that the outside air is sucked into the interior of the electric compartment. 9. The microwave oven according to claim 8, wherein the air inlet is formed in a front bent portion vertically bent upward from the tip of the base plate. The method of claim 8 or 9, wherein one side of the subplate, Communicating air is formed through the air inlet and the sub-plate to the air flows to the electric chamber, the microwave oven, characterized in that one side of the communication hole is further provided with a blower fan for intake air into the electric chamber. An outer case which protects the inside of the microwave oven while protecting the inside thereof, a base plate which forms a lower outer surface of the microwave oven, and is installed between the outer case and the base plate, in which food to be cooked is put. The electric compartment with a beater, a front plate installed at the front of the cavity, a back plate installed at the rear of the cavity, a plurality of electric parts controlling the cavity, and an inside of the electric cabinet At least one or more of the plurality of electrical components to be installed is composed of a sub-plate that is tightly fixed; And a guide means formed between the front plate and the back plate to guide the insertion of the subplate into the electrical equipment room. The method of claim 11, wherein the guide means, A front rail formed on the rear surface of the front plate; Microwave oven comprising a rear rail formed on the front of the back plate. The microwave oven according to claim 11 or 12, wherein the front rail is bent from the front plate and integrally formed, and the rear rail is bent from the backplate and integrally formed.

Images