KR20080021937A - Cooking device - Google Patents

Abstract

A cooking device is provided to enlarge a cavity thereof without increasing the overall volume thereof by disposing a blower fan, a driving motor and a convection heater at an upper portion of the cavity such that only a length of the cavity is increased in the horizontal direction. A cooking device comprises a cabinet(110), a cavity(112), a blower fan(130), a driving motor(132), a first convection duct(140) and a second convection duct(150). The cavity forms a cooking space in the cabinet. The blower fan is installed in the upper middle portion of the cavity at a front side of the cavity. The first convection duct guides air introduced from the blower fan into a rear side of the cavity. The second convection duct communicates with the first convection duct to discharge the air, which is guided to the rear side of the cavity, to the inside of the cavity.

Description

Cooking device

1 is a perspective view showing the configuration of a conventional cooking appliance.

Figure 2 is an exploded perspective view showing the configuration of a conventional cooking appliance.

Figure 3 is a configuration view as viewed from the side the working relationship between the cavity of the conventional cooking appliance.

Figure 4 is a simplified side view showing the configuration of the cooking appliance according to the present invention.

5A is a cross-sectional view of the cooking appliance according to the present invention cut from A-A 'and viewed from above.

5B is a cross-sectional view of the cooking appliance according to the present invention cut from B-B 'and viewed from above.

Figure 6 is a bottom view of the top of the cavity of the cooking appliance according to the present invention.

7 is a front configuration diagram showing an operation relationship when the inside of the cavity of the cooking appliance according to the present invention is viewed from the front.

8 is a bottom configuration diagram showing an operation relationship when the upper part of the cavity of the cooking appliance according to the present invention is viewed from below.

** Description of symbols for the main parts of the drawing **

110: cabinet 120: door

130: blower fan 132: drive motor

140: first convection duct 142: suction port

150: second convection duct 154: first discharge port

158: first damper 160: convection heater

The present invention relates to a cooking appliance, and more particularly, to a cooking appliance capable of increasing the cavity size without increasing the overall volume of the cooking appliance.

In general, there are a variety of products, such as oven, microwave oven. A microwave oven is a device that includes only a magnetron or cooks food using a magnetron and a heater. In addition, the oven is a cooking utensil designed to cook food by drying and sealing the cooking material after heating. As a heat source for supplying heat to the food, electricity or gas fuel is used.

1 and 2, a conventional cooking appliance, in particular an oven, includes a cabinet 10 providing a space in which food is cooked, a fixed heater for supplying heat to the food, and a door for opening and closing the cabinet. 20).

In the cabinet 10, a cavity 50, which is a space where food is cooked, is formed, and a control panel 2 for controlling the cooking appliance is installed in the upper part of the cabinet 10. In addition, the door 20 for opening and closing the cabinet 10 is hinged to the front of the cabinet 10.

The cavity 50 may be divided into a space for cooking food such as fish, that is, a first space 51 and a space for baking bread or cake, that is, a second space 53. In addition, the first space 51 and the second space 53 may be separated by a separate separator 40. When the first space 51 and the second space 53 are separated, heat energy is effectively transmitted to the food because the space for cooking food is reduced.

The separator 40 is made of a material having low thermal conductivity, and serves to prevent heat transfer between the first space 51 and the second space 53. In addition, the separator 40 is installed to be movable in the second space 53 by a rail (not shown) installed on the inner surface of the cabinet 10.

In addition, a first rack 31 in which food, such as fish, is placed is installed in the first space 51. The first rack 31 may be installed according to the intention of the user. That is, the first rack 31 is installed to be movable up and down in the interior of the first space 51.

In addition, a second rack 33 on which a cooking container is placed is installed in the second space 53. Similarly, the second rack 33 can be changed in position according to the intention of the user.

Rack supporters 61 for supporting the first rack 31 and the second rack 33 are installed on both inner surfaces of the cabinet 10. The rack supporter 61 is coupled to both ends of the first rack 31 and the second rack 33, and is fixedly installed on the inner surface of the cabinet 10. In addition, the rack supporter 61 is provided with a rack guide 63 for guiding the location where the rack is installed in multiple stages.

In addition, the door 20 installed on the front of the cabinet 10 includes a door frame 21 forming an edge of the door 20 and a door glass 22 installed inside the door frame 21. do.

A lower portion of the door frame 21 is hinged to the cabinet 10, and an inner edge of the door frame 21 has a sealing member (not shown) for blocking the inside and the outside of the cabinet 10. Can be installed. The door glass 22 is made of a transparent and heat resistant material so that the user can check the inside of the cabinet.

Fixed heaters are installed on the inner surface of the cabinet 10 to supply heat energy for cooking food. Heat energy generated by the fixed heaters is transferred to the food by convection or radiation.

The fixed heaters include a broil heater 71 installed on an upper side of a cabinet, a bake heater 73 installed on a lower side of the cabinet, and a convection heater 83 installed on a rear side of the cabinet. do.

The broil heater 71 is for heating the food by emitting infrared rays, and is mainly used to bake food such as fish. The broil heater 71 is fixedly installed on the inner side of the cabinet 10. Of course, the broil heater 71 may be installed to be movable above the inner surface of the cabinet 10.

The bake heater 73 is positioned below the second space 53, and is installed in the heater support member 73a that supports the bake heater 73. The bake heater 73 is a heater for baking bread or cake.

The convection heater 83 is located on the inner side of the cabinet 10 opposite to the door 20, and auxiliary heat energy is supplied to the food placed in the cabinet 10.

In the periphery of the convection heater 83, a blowing fan 85 for flowing heat generated from the convection heater 83 into the cabinet 10 is installed. The blowing fan 85 serves to distribute the air heated by the convection heater 83 evenly in the cavity 50. The convection heater and the blower fan 85 are installed in a predetermined space formed by the convection chamber cover 80 and the convection chamber back plate 81 behind the cavity 50.

In addition, a suction port 86 for sucking air in the cavity 50 is formed at a portion corresponding to the place where the blowing fan 85 is installed on the front surface of the convection chamber cover 80, and the convection is formed at a periphery thereof. A discharge port 87 through which air heated by the heater 83 is discharged is formed.

On the other hand, a driving motor 88 for driving the blowing fan 85 is provided on the rear surface of the convection chamber back plate 81, and a driving motor cooling fan 89 is provided on the driving shaft of the driving motor 88. The motor 88 is cooled so as not to be heated by heat.

Referring to FIG. 3, the blower fan 85 sucks air in the cavity 50 in the center direction through the suction port 86 and flows air in a radial direction, thereby again passing through the discharge port 87. Discharge into the cavity 50.

At this time, as shown by the arrow in the cavity 50, the air is circulated and the air heated by the convection heater 83 is to cook food.

However, according to such a conventional cooking appliance, there are the following problems.

In order to accommodate more food to be cooked in the cooking apparatus, the cavity 50 should be larger, but in the case of the existing cooking apparatus, the blowing fan 85 and the driving motor 88 are disposed behind the cavity 50. There is a limit to widening the space toward the rear of the cavity 50. That is, in order to equip the convection system as described above, there is no choice but to take a disadvantage in terms of space utilization behind the cavity 50.

In particular, the current domestic electric oven has a shorter front and rear length than the left and right length, when a bulky food such as turkey or chicken, there is a greater restriction on the front and rear length than the left and right length of the cavity 50. Therefore, in order to increase the front and rear length of the cavity 50, the total volume of the oven must be increased, which leads to an increase in production cost.

The present invention is to solve the above problems, an object of the present invention is to provide a cooking apparatus that can increase the size of the cavity, without increasing the overall volume of the cooking apparatus.

In order to achieve the above object, the present invention provides a cabinet forming an outer appearance of a cooking appliance, a cavity constituting a cooking space for cooking food in the cabinet, and installed on one side of the cavity, and circulating air in the cavity. A blower fan, a driving motor for driving the blower fan, a first convection duct for guiding air sucked by the blower fan to the rear of the cavity, and a first convection duct to communicate with the rear of the cavity; Provided is a cooking appliance comprising a second convection duct for discharging the compressed air into the cavity.

The cooking apparatus further includes a convection heater installed around the blowing fan and heating the sucked air.

The first convection duct guides the air sucked by the blower fan toward both corners of the rear of the cavity, and the second convection duct is provided at both corners of the rear of the cavity.

Here, the second convection duct further comprises a first discharge port provided at predetermined intervals for discharging the air guided behind the cavity into the cavity, the air sucked in the first convection duct inside the cavity It may further include a second discharge port provided for discharging to the.

In addition, a first damper for opening and closing the flow of air discharged to the first discharge port, and a second damper for opening and closing the flow of air discharged to the second discharge port, the first damper, and the second A control unit may be further included to control a damper to selectively open and close the flow of air discharged to the first and second discharge ports.

At this time, the blowing fan is preferably installed to be biased toward the front of the cavity from the upper center portion of the cavity.

On the other hand, the cooking apparatus according to the present invention comprises a door for opening and closing the cavity, a cooling passage formed inside the door, a cooling fan installed to communicate with the cooling passage and forcibly flowing air in the cooling passage, It may further comprise a first duct connecting the cooling fan and the cooling flow path, and a second duct connected to the cooling fan and in communication with the outside air.

Here, the drive motor is installed on the blower fan, the first duct is divided into two flow paths in the portion corresponding to the position of the drive motor in order to avoid the portion in which the drive motor is installed is provided to be combined again. .

The control method of the cooking apparatus according to the present invention comprises the steps of selecting one of the cooking course of one-stage cooking and multi-stage cooking, driving the blower fan and the convection heater installed on the upper cavity to suck and heat the air inside the cavity And controlling a damper installed on the flow path of the air to discharge the sucked air from either the upper or rear side of the cavity.

The controlling of the damper may include controlling the damper to discharge the sucked air from the upper portion of the cavity when the first stage cooking is selected in the step of selecting the cooking course, and storing the sucked air when the multistage cooking is selected. The damper is controlled to discharge from the rear of the cavity.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the present invention to those skilled in the art. Like reference numerals denote like elements throughout the specification, and descriptions of like elements will be omitted.

Figure 4 is a schematic view showing a side view of the cooking appliance according to the present invention, Figure 5a is a cross-sectional view of the cooking appliance according to the present invention viewed from the top A-A ', Figure 5b is a cooking according to the present invention Sectional view as seen from above and cutting the device at B-B ', FIG. 6 is a bottom view from below of the cavity top of the cooking appliance according to the invention.

4 to 6, the cooking apparatus according to the present invention includes a cabinet 110 forming a large appearance of the cooking appliance, a cavity 112 constituting a cooking space for cooking food in the cabinet 110, and It is installed on one side of the cavity 112, a blowing fan 130 for circulating air in the cavity 112, a drive motor 132 for driving the blowing fan 130, and the blowing fan 130 The first convection duct 140 and the first convection duct 140 to guide the air sucked by the rear of the cavity 112, and the air guided to the rear of the cavity 112, the cavity 112 includes a second convection duct 150 for discharging therein.

The cabinet 110 forms an outer shape of the cooking apparatus, and includes a cavity 112 inside which the food can be cooked.

One side of the cavity 112 is provided with a blowing fan 130 for sucking and circulating air in the cavity 112. The blower fan 130 may be a centrifugal fan that flows air by sucking air in a central direction and discharging the air in a radial direction.

Preferably, the blowing fan 130 may be installed above the cavity 112. Hereinafter, the blower fan 130 will be described with reference to an embodiment in which the cavity 112 is installed above the cavity 112.

The blowing fan 130 sucks air through the inlet 142 formed to correspond to the blowing fan 130 on the first convection duct 140. In addition, a driving motor 132 is provided to drive the blowing fan 130, and the driving motor 132 is positioned above the blowing fan 130.

The first convection duct 140 and the second convection duct 150 are provided to form a flow path through which the sucked air can circulate. The first convection duct 140 is provided on the bottom surface of the top cover 114 that partitions the cavity 112 and the electric compartment 116 of the upper part of the cooking appliance.

The first convection duct 140 guides the air sucked by the blowing fan 130 to the rear of the cavity 112. That is, the first convection duct 140 is provided to extend toward the rear of the cavity 112 from an upper portion of the cavity 112 in which the blowing fan 130 is installed.

The second convection duct 150 communicates with the first convection duct 140 and is disposed at the rear of the cavity 112 to discharge air guided to the rear of the cavity 112 into the cavity 112. It is provided to make.

That is, the second convection duct 150 is formed to descend vertically on the rear wall, and a first discharge port for discharging air toward the front of the cavity 112 in the second convection duct 150 formed on the rear wall. 154 is provided.

The first convection duct 140 and the second convection duct 150 may be composed of one duct or a plurality of ducts, but the case of consisting of two ducts is presented here.

Specifically, the first convection duct 140 is connected to the second convection duct 150 from the place where the blowing fan 130 above the cavity 112 is installed toward both corners of the rear side of the cavity 112. In addition, the second convection duct 150 extends vertically down both sides of the rear of the cavity 112, and the second convection duct 150 formed at both edges of the air passes in front of the cavity 112, that is, the door ( The first discharge port 154 for discharging toward the 120 is provided.

The first discharge holes 154 are provided at predetermined intervals on the second convection duct 150 to discharge air toward the front of the cavity 112. A plurality of first discharge holes 154 may be formed in the vertical direction to be spaced apart by a predetermined interval in the horizontal direction, but preferably, a plurality of the first discharge holes 154 may be formed in the horizontal direction to be spaced apart by a predetermined interval in the vertical direction. .

As such, when the first discharge holes 154 are formed to be spaced apart at predetermined intervals in the vertical direction, the first discharge port 154 may exhibit more advantages in multi-stage cooking. The detailed working relationship will be described later.

In another embodiment, the second convection duct 150 may be separately provided to be connected to the plurality of first outlets 154, respectively.

A convection heater 160 is provided around the blower fan 130. The convection heater 160 serves to heat the air sucked by the blower fan 130 and flow into the hot air.

The blowing fan 130 and the convection heater 160 are provided on the first convection duct 140 formed on the cavity 112, and are moved toward the front of the cavity 112 from the upper center portion of the cavity 112. It is preferable to be provided to strike.

Thus, since the air discharged toward the front of the cavity 112 from the first discharge port 154 is almost sucked by the blower fan 130 only after coming to the door 120 side, the hot air is evenly distributed throughout the cavity 112. This is going crazy.

On the other hand, the cooking appliance according to the present invention may be provided with a cooling system for preventing the temperature of the door 120 for opening and closing the cavity 112 increases in the cooking process of food.

As shown in FIG. 4, a cooling passage 122 is formed in the door 120 to cool the door 120 while air flows.

A cooling fan 172 is provided to communicate with the cooling channel 122 in order to force the flow of the air in the cooling channel 122, the first duct connecting the cooling fan 172 and the cooling channel 122 174 and a second duct 176 connected to the cooling fan 172 and communicating with the outside air, are installed in the upper electric compartment 116 of the cooking appliance. In addition, an exhaust port 178 is formed at an upper portion of the front surface of the cabinet 110 so that the second duct 176 communicates with the outside air.

In this case, the cooling fan 172 sucks air from the first duct 174 and discharges air into the second duct 176. Accordingly, suction force acts on the cooling passage 122 connected to the first duct 174 to suck air from an opening (not shown) under the door 120, and through the cooling passage 122, the main door 120. ) Forced flow of air occurs at the top. The air flowing in this way passes through the first duct 174, the cooling fan 172, and the second duct 176 sequentially and is discharged to the exhaust port 178.

In this process, the air forcedly flowed through the cooling passage 122 formed in the door 120 has a cooling action of lowering the temperature of the door 120 heated by the heat inside the cooking appliance.

The cooling fan 172 may be installed at the lower portion of the door 120 as well as the above-described position. In this case, the cooling fan 172 sucks air from the lower side of the main door 120 and discharges the air toward the upper side of the door 120 through the cooling passage 122. Perform a cooling action to lower the temperature of).

In addition, the cooling fan 172 not only cools the door 120, but also the cooling unit of the circuit unit (not shown) installed in the upper part of the cooking appliance, and the ventilation hole (not shown) formed in the cavity 112 inside the cavity 112. To act as a ventilator.

In this relationship with the cooling system, the blower fan 130 is installed on the bottom surface of the top cover 114 that divides the electric compartment 116 and the cavity 112, but the drive motor 132 is the electric compartment. The arrangement relationship with the first duct 174 is problematic because it can only be installed on the (116) side.

Thus, as shown in Figure 5a, the drive motor 132 is installed on the blowing fan 130, the first duct 174 to avoid the portion in which the drive motor 132 is installed. The duct is divided into two ducts at a portion corresponding to the position of the driving motor 132 and is provided to be combined again.

As such, the blowing fan 130, the convection heater 160, the driving motor 132, and the like, which form thermal convection inside the cavity 112, are moved to the upper portion of the cavity 112, not behind the cavity 112. By arranging the driving motor 132 to overlap the first duct 174 at the same height, the space behind the cavity 112 may be more utilized than before.

That is, in the cooking apparatus having the same volume, the length of the front and rear of the cavity 112 is not significantly reduced, the front and rear length is much longer, so that the overall space of the cavity 112 is greatly increased. In fact, there is an effect of increasing the cavity 112 space by more than about 10% in the product.

In particular, in the case of food that requires more than the front and rear length of the cavity 112, such as turkey or chicken, the convenience in terms of space utilization is increased.

The first convection duct 140 may further include a second discharge hole 144 to discharge the sucked air into the cavity 112. The second discharge port 144 is provided such that the air sucked by the blower fan 130 is discharged toward the lower portion of the cavity 112 immediately after being heated by the convection heater 160.

At this time, in discharging the air sucked by the blowing fan 130 through the first discharge port 154 and the second discharge port 144, in order to selectively control the flow of air and the first damper 158 and A second damper (not shown) is provided.

A first damper 158 is provided to open and close the flow of air discharged to the first discharge port 154, and a second damper is provided to open and close the flow of air discharged to the second discharge port 144. .

In detail, the first damper 158 is installed at a portion where the first convection duct 140 and the second convection duct 150 meet and communicate with each other. Here, the first damper 158 is installed to rotate by the power of a motor (not shown) may open and close the flow of air. Of course, the first damper 158 may be provided to open and close each first discharge port 154 on the second convection duct 150.

The second damper may be installed to slide on an inner wall of the first convection duct 140 in which the second discharge hole 144 is formed. That is, while sliding inside the second discharge port 144, the second discharge port 144 is opened and closed.

The first damper 158 and the second damper are controlled by a controller (not shown) to operate to selectively open and close the flow of air discharged to the first discharge port 154 and the second discharge port 144.

FIG. 7 is a view illustrating the inside of the cooking appliance according to the present invention from the front, and FIG. 8 is a bottom view showing the working relationship when the upper portion of the cavity of the cooking appliance according to the present invention is viewed from below.

Looking at the operation of the cooking appliance according to the present invention with reference to Figures 7 and 8.

First, the user puts food into the cavity 112 and selects a cooking course in the control panel 102 (see FIG. 4). In this case, the user may select whether the food is placed in a plurality of racks (not shown), such as bread or cookies, or is a multi-stage dish, or a single-stage dish that is placed on only one rack, such as a turkey or whole chicken, for cooking. .

Thereafter, power is applied to the bake heater 180 under the cavity 112 and the broil heater 182 above the cavity 112 to be heated, whereby cooking of food placed in the cavity 112 is performed. do.

At the same time, power is applied to the driving motor 132 so that the blowing fan 130 rotates and sucks air through the inlet 142. In this case, power is also applied to the convection heater 160 to heat the sucked air.

Here, when the user selects a multi-stage cooking course, the controller controls the first damper 158 and the second damper to block the flow of air toward the second discharge port 144, and the first discharge port 154. The flow path of air toward) opens.

Then, the air sucked by the blowing fan 130 flows along the first convection duct 140 and the second convection duct 150. At this time, the air is not discharged to the second discharge port 144, and the air moved to the second convection duct 150 is discharged toward the front of the cavity 112 only at the first discharge port 154.

Since the plurality of first discharge holes 154 are spaced apart at predetermined intervals in the vertical direction at both rear edges of the cavity 112, the air discharged at each height flows toward the front, whereby the food placed at each stage Hot air is evenly distributed to obtain the effect that food is cooked uniformly. Then, the air flowing in front of the cavity 112 is sucked by the blowing fan 130 and circulated again.

On the other hand, when the user selects the first stage cooking course, the control unit controls the first damper 158 and the second damper to close the flow path of air toward the first discharge port 154 and the second discharge port ( 144) frees the flow of air.

Then, the air sucked by the blowing fan 130 is discharged directly toward the lower portion of the cavity 112 from the second discharge port 144 in the first convection duct 140. The discharged hot air intensively heats and cooks one food item, and is sucked into the blower fan 130 and circulated.

Here, it can be understood that only some of the bake heater 180, the broil heater 182, and the convection heater 160 can be cooked according to the type of food.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to various modifications and changes to the present invention without departing from the spirit and scope of the invention described in the claims described below You can do it. Therefore, it should be seen that all modifications included in the technical scope of the present invention are basically included in the scope of the claims of the present invention.

According to the cooking appliance according to the present invention described above has the following effects.

First, the blowing fan, drive motor, and convection heater, which make up the convection system, are placed in the upper part of the cavity from the rear of the existing cavity, so that the length of the front and rear of the cavity is much reduced, and the cavity space is large. There is an increasing effect. In particular, the convenience is increased in the case of foods that require more front and rear length than the upper, left and right length of the cavity, such as turkey or chicken.

Second, since the hot air is discharged at various heights by arranging the first discharge holes to be spaced apart at predetermined intervals in the vertical direction at both rear edges of the cavity, there is an advantage in that food can be uniformly cooked in multi-stage cooking.

Third, in the case of the first-stage cooking, it is possible to intensively cook one food by discharging the air sucked from the upper portion directly downward to reduce the cooking time. In addition, the user can select a cooking course and switch the convection system accordingly, thus enabling efficient cooking of food.

Claims (13)

A cabinet forming an appearance of the cooking appliance; A cavity constituting a cooking space for cooking food in the cabinet; A blowing fan installed at one side of the cavity and configured to circulate air in the cavity; A driving motor for driving the blowing fan; A first convection duct for guiding the air sucked by the blowing fan to the rear of the cavity; And And a second convection duct in communication with the first convection duct, for discharging air guided behind the cavity into the cavity. The method of claim 1, And a convection heater installed around the blower fan and heating the sucked air. The method of claim 2, The first convection duct guides the air sucked by the blower fan toward both corners of the rear of the cavity, and the second convection duct is provided at both corners of the rear of the cavity. The method of claim 3, wherein And a first discharge port provided at a predetermined interval in order to discharge air guided behind the cavity to the second convection duct into the cavity. The method of claim 4, wherein And a second discharge port provided in the first convection duct and configured to discharge the sucked air into the cavity. The method of claim 5, wherein And a first damper for opening and closing the flow of air discharged to the first discharge port, and a second damper for opening and closing the flow of air discharged to the second discharge port. The method of claim 6, And a control unit for controlling the first damper and the second damper to selectively open and close the flow of air discharged to the first and second discharge ports. The method according to any one of claims 1 to 7, And the blowing fan is installed to be biased toward the front of the cavity from the upper center of the cavity. The method of claim 8, A door that opens and closes the cavity, a cooling passage formed inside the door, a cooling fan installed to communicate with the cooling passage, forcibly flowing air in the cooling passage, and connecting the cooling fan and the cooling passage. The cooking appliance further comprises a 1 duct and a second duct connected to the cooling fan and connected to the outside air. The method of claim 9, The drive motor is installed above the blower fan, and the first duct is divided into two ducts at a portion corresponding to the position of the drive motor so as to avoid a portion in which the drive motor is installed. Cooker. Selecting a cooking course of any one-stage dish and a multi-stage dish; Driving a blower fan and a convection heater installed above the cavity to suck and heat air in the cavity; And And controlling a damper provided on the air passage to discharge the sucked air from one of the upper and rear sides of the cavity. The method of claim 11, The controlling of the damper may include controlling the damper to discharge the sucked air from the upper portion of the cavity when the first stage is selected in the step of selecting the cooking course. The method of claim 11, The controlling of the damper may include controlling the damper to discharge the sucked air from the rear of the cavity when multi-stage cooking is selected in the step of selecting the cooking course.

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