KR20210047849A - Cooking appliance - Google Patents

Abstract

Disclosed is a cooking appliance. The disclosed invention includes: a body having a cooking chamber therein; a lower space unit that is formed inside the body and has a space separated from the cooking chamber between the floor of the body and the cooking chamber; and a lower heating unit installed in the lower space. An opening for opening the lower space to the outside between the bottom of the body and the cooking chamber is formed in the lower space. The lower heating unit is inserted into or withdrawn from the lower space through the opening.

Description

Cooking equipment{COOKING APPLIANCE}

The present invention relates to a cooking appliance, and more particularly, to a cooking appliance used to cook food.

A cooking appliance is an appliance that is installed in a kitchen space as one of household appliances for cooking food and cooks food according to a user's intention. These cooking appliances can be classified in various ways according to the type or type of heat used and the type of fuel.

When cooking appliances are classified according to the type of cooking food, they can be classified into open and closed cooking appliances according to the type of space in which food is placed. Closed cooking appliances include ovens and microwaves, and open cooking appliances include cooktops and hops.

A sealed cooking apparatus is a cooking apparatus that shields a space where food is located and heats the shielded space to cook food. In the sealed cooking appliance, a cooking chamber is provided, which is a space shielded when food is to be cooked while food is placed. Such a cooking chamber becomes a space in which food is substantially cooked.

In the sealed cooking appliance, a door for selectively opening and closing the cooking chamber is provided to be rotatable. The door is rotatably installed on the main body by a door hinge provided between the main body and the door in which the cooking chamber is formed, and can selectively open and close the cooking chamber by rotating around a portion coupled to the main body through the door hinge.

A heat source is provided in the interior space of the cooking chamber opened and closed by the door to heat the cooking chamber. As such a heat source, a gas burner or an electric heater may be used.

Among them, a gas burner may be provided with a plurality of burners in order to heat the food in the cooking chamber in a closed cooking appliance in which a gas burner is used as a heat source. For example, a broil burner is installed in the upper portion of the cooking chamber, and a bake burner is installed in the lower or rear portion of the cooking chamber.

In addition, a convection device may be further provided at the rear of the cooking chamber. The convection device performs an operation of circulating air inside the cooking chamber so that heat is evenly transmitted to the entire cooking chamber, and may include a fan cover installed on the rear wall of the cooking chamber and a convection fan installed in the inner space of the fan cover.

The fan cover is provided with an intake port and a discharge port, of which the intake port is formed at the front center of the fan cover facing the door, and the discharge port is formed at the side of the fan cover facing the side of the cooking compartment.

In addition, the convection fan rotates inside the fan cover and is operated to generate airflow.In this way, the convection fan is operated so that air from the cooking chamber is sucked into the fan cover through the intake port, and the heated air inside the fan cover is sucked into the fan cover through the exhaust port. It can create a circulating flow of air discharged to the cooking compartment.

Meanwhile, the bake burner may be classified into a pro bake burner and a bottom bake burner according to an installation type.

Among them, the pro bake burner is installed at the rear of the cooking chamber, but is installed in the form of being disposed inside the convection device. In the cooking appliance in which such a pro bake burner is installed, heat generated inside the convection device by combustion of the pro bake burner is rotated inside the pan cover and can be evenly transmitted to the entire cooking chamber by the action of the convection pan that generates airflow. have.

In comparison, the bottom bake burner is installed in the lower part of the cooking chamber. The cooking apparatus in which the bottom bake burner is installed allows heat generated by the bottom bake burner to be transferred from the lower side of the food in the cooking chamber, and thus is advantageous in implementing a function of intensively heating the bottom surface of the food.

The bottom bake burner is installed below the cooking chamber, and is installed in an independent installation space separately provided below the cooking chamber, and the space in which the bottom bake burner is installed and the cooking chamber are partitioned by a bottom surface of the cooking chamber.

A path through which the bottom bake burner can be opened to the outside of the installation space is required for maintenance of the bottom bake burner. A method of constructing a plate detachable from the main body of the cooking appliance or a method of constructing the main body of the cooking appliance in a form of opening the bottom of the bottom bake burner installation space is commonly used.

However, when the bottom surface of the cooking compartment is composed of a plate detachable from the main body of the cooking appliance, a gap is created between the plate forming the bottom surface of the cooking compartment and the coupling part, which makes it impossible to connect the bottom surface of the cooking compartment smoothly. Not only does the aesthetics of the inside of the cooking appliance be hindered, but also foreign substances may be trapped in the gap, which is not good for hygiene.

In addition, if the main body of the cooking appliance is configured in such a way that the bottom of the bottom bake burner installation space is opened to form a smooth bottom surface of the cooking chamber, maintenance work on the bottom bake burner is possible only when the main body of the cooking appliance is turned over. However, the maintenance work for the bottom bake burner becomes very difficult and difficult.

An object of the present invention is to provide a cooking appliance having an improved structure so that maintenance work can be performed easily and quickly.

The cooking appliance according to the present invention includes: a main body having a cooking chamber formed therein; A lower space portion formed inside the main body and forming a space separated from the cooking chamber between the bottom of the main body and the cooking chamber; And a lower heating unit installed in the lower space part, wherein an opening part for opening the lower space part to the outside is formed between the bottom of the main body and the cooking chamber, and the lower heating unit, It is inserted into the lower space through the opening part or is withdrawn from the lower space part.

In addition, the lower heating unit may include a lower heating unit generating heat; And a lower case installed inside the lower heating unit and slidably inserted into the lower space through the opening from outside the main body.

In addition, the main body further includes a side space portion provided on a side portion of the main body to form a space separated from the cooking chamber on a side portion of the cooking chamber, and the opening portion is formed between the lower space portion and the side space portion, and the It is preferable that a passage connecting the lower space part and the side space part is formed, and the lower case is installed to be slidable in a lateral direction in the lower space part.

In addition, the lower case includes a bottom portion forming a bottom surface of the lower case, and a side wall portion extending upwardly from the bottom surface portion to form a side surface of the lower case, and the side wall portion includes a front and rear surface of the lower case. It is preferable that it is coupled to the main body so that the movement in the direction is restricted and the sliding in the lateral direction is possible.

In addition, provided in a shape protruding toward the lower case from a lower boundary surface of the cooking chamber, further comprising a guide protrusion extending in a lateral direction, and at an upper end of the side wall part, a guide groove into which the guide protrusion is fitted is provided with the guide protrusion. It is preferably formed to be concave in a shape corresponding to the shape of, and the lower case is slidably coupled to the guide protrusion by engagement between the guide protrusion and the side wall part.

In addition, the main body includes a rear surface defining a rear boundary surface of the cooking chamber, a lower surface defining a lower boundary surface of the cooking chamber, and a side surface defining a lateral boundary surface of the cooking chamber, wherein the lower surface includes at least one of the rear surface and the side surface. It is preferable that it is formed to be integrally connected with any one to partition between the cooking chamber and the lower space part.

In addition, the lower case may include a bottom portion forming a bottom surface of the lower case, a side wall portion extending upward from the bottom portion to form a side surface of the lower case, and a lower surface portion at an upper portion of the side wall portion. It is preferable to include a contact surface portion forming a contact surface, and the contact surface portion is bent at an upper end portion of the side wall portion to form a plane parallel to the lower surface portion.

In addition, the lower case includes a bottom portion forming a bottom surface of the lower case, a side wall portion extending upward from the bottom surface portion to form a side surface of the lower case, and an interior of the lower case on the side wall portion. A first discharge port defining a passage opening to the outside, and a second discharge port forming a passage opening the inside of the cooking chamber to the outside is formed at the side portion, and the cooking appliance includes the main body and the lower case It is preferable to further include a flow path connecting member that is detachably coupled to the first discharge port to form a guide passage connecting the first discharge port and the second discharge port.

In addition, the lower case includes a bottom surface portion forming a bottom surface of the lower case, and a plurality of sidewall portions extending upwardly from the bottom surface portion to form a side surface of the lower case, and the first discharge port comprises: Each of the sidewall portions disposed on the side of the opening portion and the sidewall portions disposed opposite the opening portions, and the second discharge ports are formed on a pair of side portions facing each other, and the flow path connection member , A first flow passage connecting member disposed on the side of the opening portion to form the guide passage, and a second passage connecting member disposed opposite the opening portion to form the guide passage, and the first passage connecting member , Is fixedly coupled to the side portion and the side wall portion at the opening side to fix the lower case to the body, and the second flow path connecting member is fixedly coupled to the side portion at the opposite side of the opening portion, and the It is preferable that the side wall is in contact with the side wall in a separable manner.

In addition, the flow path connecting member includes a duct portion installed outside the cooking chamber to form an outer wall surrounding the guide flow passage from the outside, and a coupling portion coupling the duct portion to at least one of the lower case and the side portion. It is preferable that the guide flow passage forms a passage connecting the first discharge port and the second discharge port in a space surrounded by the duct part.

In addition, the coupling portion is protruding from the edge of the duct portion in contact with the side portion or the side surface of the lower case, and formed to form a plane parallel to the side portion or the side surface of the lower case, and is in surface contact with the side portion or the lower case. It is desirable.

In addition, the present invention is provided on the outside of the side portion, it is preferable to further include a clip member for pressing the coupling portion toward the side portion in close contact with the side portion.

In addition, between the side portion and the clip member, a fitting groove is formed with an upper portion blocked and a lower portion open, and the clip member is coupled to the side portion such that an upper portion of the fitting groove is disposed above the second discharge port, and the fitting groove It is preferable that the upper end portion of the coupling portion fitted in the interfering portion interferes with the upper portion of the fitting groove to guide the vertical position of the flow path connecting member coupled to the side portion.

In addition, the main body further includes a side space portion provided on a side portion of the main body to form a space separated from the cooking chamber on a side portion of the cooking chamber, and the opening portion is formed between the lower space portion and the side space portion, and the A passage connecting the lower space part and the side space part is formed, and the lower case is slidably installed in the lower space part and is drawn out from the lower space part through the opening part and the side space part. It is preferable that the first flow path connecting member is separated from the main body together with the lower case when the lower case is withdrawn.

In addition, it is preferable that the body further includes a side panel portion detachably coupled to a side portion of the body to cover the side space portion.

In addition, the main body includes a bottom portion defining a lower boundary surface of the lower space portion, and the bottom portion is provided with a support for supporting the lower case so that the lower case inserted in the lower space portion is disposed at a set position. desirable.

In addition, the support may include: a first support that prevents movement of the lower case installed in the setting position in the withdrawal direction and supports the lower case from the opening side; And a second support that prevents movement of the lower case installed at the setting position in the insertion direction and supports the lower case opposite the opening.

In addition, the first support includes a first coupling portion coupled to the bottom portion; A first support part connected to the first coupling part and supporting the bottom surface of the lower case from the bottom at a position spaced from the bottom part in an upward direction; And a first stopping part protruding upward from the first supporting part and interfering with a side of the open part of the lower case located at the setting position.

In addition, the first blocking portion may include a blocking plate formed to protrude upwardly from the first supporting portion; And a connection plate connected to the first support part to be elastically deformable in the vertical direction to connect the stop plate to the first support part.

In addition, it is preferable that a part of the first support part is cut to form the connection plate, and a part of the connection plate is bent upward to form the stop plate.

In addition, the second support includes a second coupling portion coupled to the bottom portion; A connection part extending upward from the second coupling part; And a second support part extending from the connection part in the insertion direction of the lower case, and supporting the bottom surface of the lower case from the bottom at a position spaced from the bottom part in the upper direction.

In addition, it is preferable that the second support further includes a second restraining portion protruding upward from the second support portion and interfering with a side portion opposite the opening portion of the lower case located at the setting position.

In addition, it is preferable that the connection part forms an inclined surface inclined upward in the insertion direction of the lower case, and connects the second coupling part and the second support part.

In addition, it is preferable that the connection part is connected to the second coupling part so as to be elastically deformable in the vertical direction to elastically support the second support part.

In addition, it is preferable to further include a first heating unit provided inside the cooking chamber and generating a circulating flow of heat circulating inside the cooking chamber.

In addition, the first heating unit is installed at the rear side of the cooking compartment, and at the rear side of the bottom portion adjacent to the rear side of the cooking compartment, an air inlet hole forming a passage for introducing external air into the first heating unit is provided. Is formed, and a through hole is formed in the bottom surface of the lower case to form a passage through which external air is introduced into the lower case, and the air inflow hole is formed between the bottom surface and the bottom portion of the lower case. It is preferable that a flow guiding member is provided for guiding the flow of external air introduced through the through hole located in front of the air inlet hole.

In addition, the flow guide member is provided in the form of a side wall partitioning a space between the bottom surface of the lower case and the bottom portion in a lateral direction, and between the bottom surface of the lower case and the bottom portion, a plurality of flow guides It is preferable that members are installed at predetermined intervals in the lateral direction, and a flow path in a front-rear direction connecting between the air inlet hole and the through hole is formed between the pair of adjacent flow guide members.

According to the cooking appliance of the present invention, when repair or replacement of the lower heating unit is required, it can be easily and conveniently withdrawn through the side of the cooking appliance, so that maintenance work for the lower heating unit can be performed easily and quickly and conveniently. It can provide an effect.

In addition, the present invention allows the lower heating unit to be inserted or withdrawn without the need to separate the lower surface of the cooking chamber or turn over the cooking appliance, thereby enabling the bottom surface of the cooking chamber to achieve a smooth and flat surface, thereby providing improved aesthetics. In addition, it is possible to provide an effect of lowering the risk of damage to cooking equipment and occurrence of safety accidents during maintenance work.

1 is a perspective view schematically showing a cooking appliance according to an embodiment of the present invention.
FIG. 2 is a perspective view showing an oven part of the cooking appliance shown in FIG. 1 by separating.
3 is an exploded perspective view showing each configuration of an oven unit of the cooking appliance shown in FIG. 1 in an exploded manner.
4 is a cross-sectional view taken along line AA of FIG. 1.
5 is a cross-sectional view taken along line BB of FIG. 1.
6 is a perspective view illustrating a state in which a side panel portion is separated from the cooking appliance shown in FIG. 1.
7 is a perspective view illustrating a state in which the flow path connecting member is separated from the cooking appliance shown in FIG. 6.
FIG. 8 is a perspective view illustrating a state in which the lower heating unit is partially withdrawn from the cooking appliance shown in FIG. 7.
9 is a perspective view illustrating a separate flow path connecting member of a cooking appliance according to an embodiment of the present invention.
10 is a cross-sectional perspective view showing an enlarged portion C of FIG. 5.
11 is a cross-sectional perspective view showing a state in which the flow path connecting member is removed from the cooking appliance illustrated in FIG. 10.
12 is a cross-sectional view taken along line DD of FIG. 1.
13 is a cross-sectional view showing an enlarged portion E of FIG. 12.
14 is a cross-sectional view showing an enlarged portion F of FIG. 12.
15 is a cross-sectional view showing a state in which the second heating unit shown in FIG. 12 is partially pulled out.
16 is a cross-sectional view showing an enlarged portion G of FIG. 15.
17 is a cross-sectional view illustrating a portion G of FIG. 15 enlarged in another direction.
18 is a cross-sectional view showing an enlarged portion H of FIG. 15.
FIG. 19 is a cross-sectional view showing a drawing state of the second heating unit shown in FIG. 15.
20 is a cross-sectional view taken along line II of FIG. 1.
21 is a flowchart illustrating an example of a combustion control process of a cooking appliance according to an embodiment of the present invention.
22 is a view showing an example of a hot air flow formed inside the cooking apparatus according to an embodiment of the present invention.

Hereinafter, an embodiment of the cooking appliance according to the present invention will be described with reference to the accompanying drawings. For convenience of description, thicknesses of lines or sizes of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of users or operators. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

[Overall structure of cooking equipment]

1 is a perspective view illustrating a cooking appliance according to an embodiment of the present invention, and FIG. 2 is a perspective view illustrating an oven part of the cooking appliance illustrated in FIG. 1 by separating.

Referring to FIGS. 1 and 2, the cooking appliance according to an exemplary embodiment of the present invention has an external appearance formed by a main body 10. The main body 10 may be provided in a shape including a substantially rectangular parallelepiped shape, and is formed of a material having a predetermined strength to protect a plurality of parts installed in the inner space.

At the upper end of the main body 10, an open space, that is, a cooktop unit 20 provided to cook food by heating a food or a container containing food placed on the upper side is positioned.

At least one cooktop heating unit 21 for heating food to be cooked or a container containing food is positioned in the cooktop unit 20.

In addition, an oven unit 30 is installed below the cooktop unit 20. In the inner space of the oven unit 30, a cooking chamber 31 providing a space in which food is cooked is positioned.

The cooking chamber 31 is formed in the shape of a hexahedron with an open front surface, and while the cooking chamber 31 is shielded, the interior space of the cooking chamber 31 is heated to cook food. That is, in the oven unit 30, the inner space of the cooking chamber 31 is a space in which food is substantially cooked.

The oven unit 30 is provided with a door 32 that selectively opens and closes the cooking chamber 31 so as to be rotatable. The door 32 may open and close the cooking chamber 31 in a pull-down manner in which the upper end rotates up and down around the lower end.

The door 32 has a shape of a hexahedron having a predetermined thickness as a whole, and a handle 32a is installed on the front surface thereof to grip the door 32 when the user wants to rotate the door 32. The user can easily rotate the door 32 by the handle 32a.

A control panel 51 is provided on the front of the cooktop 20, that is, on the upper side of the door 32. The control panel 51 may be formed in the shape of a hexahedron having a predetermined internal space, and on the front side of the control panel 51, an input unit through which a user inputs an operation signal for operating the cooktop unit 20 and the oven unit 30 (52) is provided.

The input unit 52 is provided with a plurality of operation switches, through which the user can directly input the operation signal.

In addition, the control panel 51 may further include a display unit providing operation information of a cooking appliance or cooking information of food, and a user can check various information on the shelf support device and the cooking appliance having the same through the display unit. There will be.

In the internal space of the main body 10, that is, a space between the cooktop unit 20 and the oven unit 30, an electric equipment chamber 50 is formed to provide a space in which electric parts are located. The control panel 51 is positioned on the front of the electric room 50, and the control panel 51 has a structure in which the control panel 51 substantially shields the front of the electric machine 50.

[Structure of oven part]

3 is an exploded perspective view showing each configuration of the oven unit of the cooking appliance shown in FIG. 1 by exploding, FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1, and FIG. 5 is a cross-sectional view taken along line B-B of FIG. 1.

3 to 5, the oven unit 30 of the cooking appliance according to an embodiment of the present invention includes a main body 10 forming a skeleton of the oven unit 30, and a front side of the main body 10. A door 32 that is installed to open and close the cooking chamber 31, a first heating unit 310 installed inside the cooking chamber 31, and a lower heating unit 320 installed below the outside of the cooking chamber 31. Includes.

According to the present embodiment, the main body 10 is provided in a shape including a substantially rectangular parallelepiped shape, and may include a rear surface 11, a lower surface 13, and a side surface 15.

The rear portion 11 is a wall surface located on the rear side of the cooking chamber 31 and defines a rear boundary surface of the cooking chamber 31 formed inside the main body 10. The rear portion 11 forms a rear surface of the cooking chamber 31 and forms a wall surface on which the fan cover 311 of the first heating unit 310 is provided to be positioned behind the cooking chamber 31.

The lower surface 13 is a wall surface located on the lower side of the cooking chamber 31 and defines a lower boundary surface of the cooking chamber 31 formed inside the main body 10. The lower surface portion 13 forms a lower surface of the cooking chamber 31 and forms an interface that partitions the lower space portion 33 and the cooking chamber 31 to be described later.

The side portion 15 is a wall surface located on the rear side of the cooking chamber 31 and defines a lateral boundary surface of the cooking chamber 31 formed inside the main body 10. This side portion 15 forms a side surface of the cooking chamber 31 and forms an interface that divides the side space portion 35 and the cooking chamber 31 to be described later.

The lower surface 13 is formed to be integrally connected with at least one of the rear surface 11 and the side surface 15. In this embodiment, it is exemplified that the lower surface 13, the rear surface 11, and the side surface 15 are integrally connected so that each surface defining the boundary surface of the cooking chamber 31 can be integrally connected without a seam. . Accordingly, since the inner surface of the cooking chamber 31 is able to maintain a smooth flat surface, it is possible to easily remove contaminants from the inner surface of the cooking chamber 31 and improve the aesthetics of the cooking chamber 31.

Meanwhile, in addition to the cooking chamber 31, a lower space 33 and a side space 35 may be formed inside the main body 10.

The lower space part 33 is formed inside the main body 10, is formed below the outer side of the cooking chamber 31, and is a space separated from the cooking chamber 31 between the bottom of the main body 10 and the cooking chamber 31 To form. The cooking chamber 31 and the lower space part 33 are partitioned by a lower surface part 13, and the lower space part 33 formed in this way includes a lower heating unit 320 to be described later, and a flow path connecting member 330 and 330 to be described later. A) can provide a space for installing some areas.

The side space portion 35 is formed inside the main body 10, is formed on an outer side of the cooking chamber 31, and a space separated from the cooking chamber 31 is formed on a side of the cooking chamber 31. The cooking chamber 31 and the side space part 35 are partitioned by the side space part 15, and the side space part 35 formed in this way is a partial region of the flow path connecting members 330 and 330a, which will be described later, and other oven parts ( 30) A space for installing related parts can be provided. These side spaces 35 are respectively formed on both sides of the main body 10 with the cooking chamber 31 as the center.

In addition, the main body 10 may further include a bottom portion 17 and side panel portions 18 and 19.

The bottom portion 17 is installed under the main body 10 to form a bottom surface of the main body 10 and defines a lower boundary surface of the lower space portion 33 formed inside the main body 10.

In addition, the side panel portions 18 and 19 are respectively installed on both side sides of the main body 10 to form an outer side surface of the main body 10, and the side spaces 35 formed inside the main body 10 Define the outer interface.

According to this embodiment, side spaces 35 are respectively formed on both sides of the cooking chamber 31 in the lateral direction, and each side spaces 35 are enclosed in a C shape by the main body 10 when viewed from the top, That is, three surfaces are surrounded by the main body 10 and the remaining one surface is opened in an outward direction to form a space.

The side panel portions 18 and 19 are respectively installed on each side of the main body 10 opened as described above to cover the open side of the side space portion 35 from the outside to form the side appearance of the main body 10 do.

The side panel portions 18 and 19 may include an outer panel 18 and a gasket case 19.

The outer panel 18 is formed in a panel shape having a shape corresponding to the open side shape of the side space portion 35, and is installed on each side of the main body 10, respectively. These outer panels 18 cover the open side of the side space 35 from the outside to form a side appearance of the main body 10, and are installed in a form that is detachably coupled to each side of the main body 10 Can be.

The gasket case 19 is disposed between the side surface 15 and the outer panel 18. In the gasket case 19 arranged in this way, the heat generated from the first heating unit 310 installed in the cooking chamber 31 and the lower heating unit 320 installed in the lower space part 33 is removed from the outer panel ( 18) Provides an insulation function that blocks transmission to the side. The gasket case 19 may be installed in a form fixed to the outer panel 18 or may be installed in a form that is detachably coupled to the outer panel 18.

The side panel portions 18 and 19 provided in the above configuration cover the open side of the side space portion 35 from the outside when coupled to the side portion of the body 10 and cover the side appearance of the main body 10 from the outside. And, if necessary, it is separated from the main body 10 to open the inside of the side space part 35 to the outside of the main body 10.

The first heating unit 310 is provided inside the cooking chamber 31 to generate heat in the cooking chamber 31. In this embodiment, the first heating unit 310 is illustrated as being provided in a pro bake burner type. The first heating unit 310 generates heat inside the cooking chamber 31, but generates a circulating flow of heat circulating inside the cooking chamber 31, so that the heat is evenly transmitted within the cooking chamber 31. Can provide. A detailed description of the configuration of the first heating unit 310 will be described later.

The lower heating unit 320 is provided in the outer lower part of the cooking chamber 31, more specifically in the lower space part 33 to generate heat from the lower part of the cooking chamber 31. In this embodiment, the lower heating unit 320 is illustrated as being provided in a bottom bake type. The lower heating unit 320 generates heat in the lower portion of the cooking chamber 31 and allows the heat to be transmitted from the lower side of the food in the cooking chamber 31, thereby implementing a function of intensively heating the bottom surface of the food. have. A detailed description of the configuration of the lower heating unit 320 will be described later.

[Configuration of the first heating unit]

The first heating unit 310 is provided inside the cooking chamber 31, and may include a fan cover 311, a first heating unit 313, a burner cover 315, and a convection pan 317. have.

The fan cover 311 is installed at the rear of the main body 10, more specifically, on the rear surface 11 forming the rear of the cooking chamber 31. As an example, the fan cover 311 may be formed in the shape of a hexahedron with an open rear surface. The fan cover 311 is coupled to the rear surface 11 so that the open rear surface is covered by the rear surface 11 to form a separate accommodation space inside the cooking chamber 31.

The fan cover 311 is provided with an intake port 311a and an exhaust port 311b. The intake port 311a is formed to pass through the front side of the fan cover 311 facing the front side of the cooking chamber 31, and the exhaust port 311b is a side surface of the cooking chamber 31, that is, the fan cover 311 facing the side portion 15. ) Is formed to penetrate through the side.

The first heating unit 313 is provided in an accommodation space inside the fan cover 311 to generate heat. In this embodiment, it is exemplified that the first heating unit 313 is provided in the form of a pro bake burner installed on the rear surface of the cooking compartment 31.

Accordingly, the first heating unit 313 may be provided in a form in which a plurality of flame holes are formed on the side of the burner body provided in an extended form such that the hollow pipe forms a “U”-shaped curve.

A flow path through which the mixed gas is supplied is formed inside the burner body, and the salt hole forms a path through which the gas supplied into the burner body is discharged to the outside of the burner body.

A plurality of flame holes may be disposed on the side of the burner body to be spaced apart at predetermined intervals along the extending direction of the burner body, whereby a plurality of gas discharge passages may be provided in the burner body along the extending direction of the burner body.

According to the present embodiment, the burner body receives a gas mixed with air, that is, a mixed gas through a mixing tube connected to the burner body, and the mixed gas supplied to the flow path inside the burner body is supplied to the outside of the burner body through a salt hole. By being discharged and burned, a flame is generated outside the first heating unit 313, that is, in the accommodation space inside the fan cover 311.

The burner cover 315 is provided to be located in an accommodation space inside the fan cover 311 and may be formed in a form in which a pair of cover plates provided in a form separated in the front-rear direction are combined. Inside the burner cover 315, while the first heating part 313 is accommodated, a space that can surround the flame generated by the first heating part 313 from the outside is formed.

The burner cover 315 provided as described above stabilizes the flame generated in the first heating unit 313 by limiting the area in which the flame generated in the first heating unit 313 is spread, while the flame is 311) and the cooking chamber 31 may be installed to block direct contact with the wall.

In addition, a reflecting plate 316 may be further provided in the cooking appliance of the present embodiment. The reflecting plate 316 is provided to be located in an accommodation space inside the pan cover 311, and is provided to be located between the burner cover 315 and the rear wall of the cooking chamber 31. The reflecting plate 316 provided as described above blocks a certain portion of the heat generated by the flame generated from the first heating unit 313 from being transmitted to the rear wall of the cooking chamber 31, thereby preventing the enamel formed on the surface of the cooking chamber 31, etc. It can be installed to protect the same coating layer from heat damage.

The convection fan 317 is provided to be located in an accommodation space inside the fan cover 311. The operation of the convection fan 317 may be performed in a form in which the convection fan 317 is rotated by driving the convection motor 318 connected to the convection fan 317 to generate an air current. In the convection fan 317 operated in this way, the air from the cooking chamber 31 is sucked into the receiving space inside the fan cover 311 through the intake port 311a and is sucked into the receiving space inside the fan cover 311 to be heated. An air circulation flow through which air is discharged to the cooking chamber 31 through the exhaust port 311b may be generated.

[Configuration of lower heating unit]

The lower heating unit 320 is provided below the cooking chamber 31, and is a space separated from the cooking chamber 31 in which the first heating unit 310 is installed, that is, a lower space portion 33 formed under the cooking chamber 31. ) Is installed. The lower heating unit 320 may include a lower case 321, a lower heating unit 323, and a guide plate 325.

The lower case 321 is installed in the lower space part 33, and an accommodation space for installing various components constituting the lower heating unit 320 is formed in the lower case 321. The lower case 321 may be provided in a shape including a rectangular parallelepiped shape with an open upper portion, and is formed of a material having a predetermined strength to protect a plurality of components installed in the receiving space therein.

The lower case 321 includes a bottom surface portion 321a forming a bottom surface of the lower case 321, and a side wall portion extending upward from the bottom surface portion 321a to form a side surface of the lower case 321 ( 321b).

The lower heating part 323 is installed in the receiving space inside the lower case 321 and generates heat from the lower part of the cooking chamber 31. In this embodiment, the lower heating part 323 is illustrated as being provided in the form of a bottom bake burner installed under the cooking chamber 31.

The lower heating part 323 may be provided in a form in which a plurality of flame holes are formed on the side of the burner body provided in a form in which a hollow pipe extends in a straight line along the front-rear direction. As another example, the lower heating part 323 may be provided in a form in which a plurality of flame holes are formed on the side of the burner body provided in an extended form such that a hollow pipe forms a “U”-shaped curve.

The main difference between the lower heating part 323 and the first heating part 313 is the formation direction and flame formation position of the flame hole, and in other parts, the configuration between the first heating part 313 and the lower heating part 323 Since the phase difference is not large, a detailed description of the lower heating unit 323 will be omitted.

The guide plate 325 is provided on the upper part of the lower heating part 323. The guide plate 325 is disposed between the lower surface portion 13 and the lower heating portion 323, and is provided to intercept between the lower heating portion 323 and the lower surface portion 13. This guide plate 325 blocks the direct contact of the flame generated by the lower heating part 323 to the lower surface 13, which is the bottom surface of the cooking chamber 31, and by combustion of the lower heating part 323 It serves to indirectly transmit the generated heat to the lower surface (13).

In addition, the lower heating unit 320 of the present embodiment may further include an air guide 327 provided under the lower heating unit 323. The air guide 327 is disposed between the bottom surface portion 321a and the lower heating portion 323, which is the bottom surface of the lower case 321, and is provided to intercept between the bottom surface portion 321a and the lower heating portion 323 do. This air guide 327 forms a barrier wall that prevents the flame from spreading to the bottom part 321a, thereby inducing the flame generated by the combustion of the lower heating part 323 to be intensively operated toward the upper side. Plays a role.

Meanwhile, a plurality of through holes 322 are formed to pass through the bottom portion 321a that is the bottom surface of the lower case 321. In addition, a plurality of through holes 328 are formed through the air guide 327 disposed above the bottom portion 321a.

The through hole 322 forms a vertical passage through which external air flows into the lower case 321 on the bottom portion 321a. In addition, the through hole 328 forms a vertical passage on the air guide 327 through which external air introduced through the through hole 322 flows toward the lower heating unit 323. That is, a passage through which external air flows into the lower heating unit 323 is formed inside the lower heating unit 320. External air introduced into the lower heating unit 323 through the passage formed as described above may be used as secondary air for stable combustion of the lower heating unit 323.

Preferably, the through-hole 322 and the through-hole 328 may be formed so that their vertical positions are offset from each other. When the through-hole 322 and the through-hole 328 are arranged in this way, a passage having a sufficient width for supplying secondary air can be secured, while a blocking that can effectively prevent the flame from spreading to the bottom portion 321a. You will be able to keep the wall.

[Heat transfer structure]

6 is a perspective view showing a state in which the side panel portion is separated from the cooking appliance shown in FIG. 1, and FIG. 7 is a perspective view illustrating a state in which the flow path connecting member is separated from the cooking appliance shown in FIG. 6, and FIG. 7 is a perspective view showing a state in which the lower heating unit is partially withdrawn from the cooking appliance shown in FIG. 7.

5 and 6, the first heating unit 310 provided inside the cooking chamber 31 generates heat inside the cooking chamber 31, but prevents the circulation flow of heat circulating inside the cooking chamber 31. By generating it, it provides a function of evenly transmitting heat into the cooking chamber 31. In addition, the lower heating unit 320 provided at the outer lower portion of the cooking chamber 31 generates heat from the lower portion of the cooking chamber 31 so that the bottom surface of food such as pizza is cooked in a more crispy form. It can provide a function of intensive heating.

That is, the cooking appliance of this embodiment has a function of uniformly heating food in the cooking chamber 31 by using the first heating unit 310 and intensively heating the bottom surface of the food by using the lower heating unit 320. It can provide the function to do together.

In addition, the cooking appliance of this embodiment can further provide a function of increasing the temperature in the cooking chamber 31 more quickly and effectively by transferring heat generated from the lower heating unit 320 into the cooking chamber 31. have. Hereinafter, a heat transfer structure for implementing this function will be described.

According to this embodiment, a first discharge port (a) is formed on the side wall portion (321b) constituting the side of the lower heating unit (320), and the second discharge port (b) is formed on the side portion (15) constituting the side surface of the cooking chamber (31). ) Is formed.

The first discharge port (a) is formed to pass through the side wall portion (321b) in the lateral direction, and the first discharge port (a) formed in this way forms a lateral passage connecting the inside and the outside of the lower case 321 do. A passage connecting the inside of the lower case 321 in which the lower heating part 323 is installed and the side space part 35 is formed by the first discharge port (a) formed to penetrate through the side wall part 321b.

In addition, the second discharge port (b) is formed to pass through the side portion 15 in the lateral direction, and thus the second discharge port (b) forms a lateral passage through which the inside and the outside of the cooking chamber 31 are communicated. A passage connecting the inside of the cooking chamber 31 and the side space 35 is formed by the second discharge port b formed to penetrate through the side portion 15.

At this time, the first discharge port (a) and the second discharge port (b) form a passage connected to the side space portion 35, respectively, and by the first discharge port (a) and the second discharge port (b) formed in this way. , A passage connecting the inside of the lower case 321 and the side space portion 35, and a passage connecting the side space portion 35 and the inside of the cooking chamber 31 are formed.

In addition, the cooking appliance of the present embodiment may further include flow path connecting members 330 and 330a.

The flow path connecting members 330 and 330a are installed outside the cooking chamber 31 and form a lateral passage through which heat generated from the lower heating unit 320 flows into the cooking chamber 31.

In this embodiment, the flow path connecting members 330 and 330a are exemplified as having a space formed therein and provided in the form of a duct with an open side portion toward the cooking chamber 31. The flow path connecting members 330 and 330a are installed outside the cooking chamber 31 in a form of forming an outer wall surrounding the periphery of the first discharge port a and the second discharge port b. At this time, in the flow path connecting members 330 and 330a, some regions corresponding to the lower portions of the flow path connecting members 330 and 330a are disposed in the lower space portion 33, and the remaining areas corresponding to the upper portions of the flow path connecting members 330 and 330a are It is installed in a form disposed in the side space part 35.

And the inside of the flow path connecting members 330 and 330a installed as described above, the outer wall formed by the flow path connecting members 330 and 330a, and the side portion 15 and the lower surface 13 to which the flow path connecting members 330 and 330a are coupled. An enclosed guide passage (c) is formed.

As described above, the guide passage c formed in the inner space of the passage connecting members 330 and 330a forms a passage connecting the first discharge port a and the second discharge port b. The guide passage (c) forms a passage through the lower space portion 33 and the side space portion 35, but connects the passage to be separated from the space formed in the lower space portion 33 and the side space portion 35 It is defined by members 330 and 330a.

That is, the flow path connecting members 330 and 330a installed on the outside of the cooking chamber 31 pass through the lower space 33 and the side space 35 while passing through the lower heating unit 320 and the inside of the cooking chamber 31. To form a passage connecting the lower space part 33 and the side space part 35, a passage separated from these spaces within the space formed in the lower space part 33 and the side space part 35 do. Accordingly, the cooking appliance of the present embodiment can secure a passage for transferring heat generated by combustion of the lower heating unit 323 inside the lower heating unit 320 into the interior of the cooking chamber 31 in a convection form. .

It should be noted that in the heat transfer structure as described above, a passage for transferring heat generated by combustion of the lower heating unit 323 into the interior of the cooking chamber 31 in a convective form (hereinafter referred to as a heat transfer path) is a cooking chamber ( That is, it is formed on the side of the cooking chamber 31, not the lower part of 31).

If the heat transfer path is formed in the lower portion of the cooking compartment 31, the heat transfer path of the shortest distance may be formed in which the heat of the lower heating unit 320 directly rises into the interior of the cooking compartment 31. However, in order for the heat transfer passage to be formed in the lower portion of the cooking chamber 31, a hole for passing the heat must be formed in the lower surface 13, which is the bottom surface of the cooking chamber 31.

In this way, in a structure in which a hole is formed in the lower surface 13, that is, the bottom surface of the cooking chamber 31, the bottom surface of the cooking chamber 31 cannot maintain a smooth plane, and thus, the hole portion of the bottom of the cooking chamber 31 It is difficult to clean the bottom surface of the cooking compartment 31 due to contamination. In addition, in the above structure, foreign substances fall into the interior of the lower heating unit 320 through the hole, so that the pollution of the lower heating unit 320 is deepened, and thus the performance of the lower heating unit 320 is deteriorated or the contaminant is ignited. There is also a growing concern about safety accidents.

In comparison, in the cooking appliance of the present embodiment, the heat transfer path is not formed in the lower portion of the cooking chamber 31 but a heat transfer structure formed on the side of the cooking chamber 31 is formed.

That is, in this embodiment, the interior of the lower heating unit 320 is opened laterally through the first discharge port (a), and the interior of the cooking chamber 31 is laterally opened through the second discharge port (b), In this way, a heat transfer path in a form in which the flow path connecting members 330 and 330a connect between the two discharge ports a and b opened in the lateral direction is formed.

According to this, the heat transfer passage is not formed in a form that directly penetrates the bottom surface of the cooking chamber 31, but wraps the lower and side surfaces of the cooking chamber 31 from the outside and bypasses the cooking chamber 31 in a c shape. And connected to the inside of the cooking chamber 31 through a second discharge port b formed on the side of the cooking chamber 31.

In the heat transmission structure of the present embodiment formed as described above, a hole is not formed in the bottom surface of the cooking chamber 31 and the bottom surface of the cooking chamber 31 can maintain a smooth plane.

The cooking appliance of this embodiment including such a heat transfer structure allows the bottom surface of the cooking chamber 31 to be implemented in a flat shape having a smooth and flat surface, so that it is easy to remove contaminants from the bottom surface of the cooking chamber 31. It is possible to provide improved cleanability by making it disappear, and it is possible to appeal design elements to consumers by improving the aesthetics of the interior of the cooking compartment 31.

In addition, the cooking appliance of the present embodiment including the above structure can prevent contaminants in the cooking chamber 31 from falling into the interior of the lower heating unit 320, so that the performance of the lower heating unit 320 is degraded due to contamination. Or lowering the risk of safety accidents.

Meanwhile, the flow path connecting members 330 and 330a may be provided in a form that is fixedly coupled to the main body 10 or may be provided in a form that is detachably coupled to the main body 10.

As shown in FIG. 7, when the flow path connecting members 330 and 330a are provided in a form that is detachably coupled to the main body 10, when the flow path connecting members 330 and 330a are separated from the body 10, the flow path connecting members The lower heating unit 320 covered by the 330 and 330a may be exposed toward the side space 35.

In this way, the lower heating unit 320 is exposed toward the side space portion 35, which means that the lower heating unit 320 installed in the lower portion of the cooking chamber 31 can be separated from the main body 10 in the lateral direction. Means that it is secured.

That is, when the flow path connecting members 330 and 330a are provided in a form that is detachably coupled to the main body 10, as shown in FIG. 8, after separating the flow path connecting members 330 and 330a from the main body 10, the bottom heating It is possible to design the installation structure of the lower heating unit 320 that can separate the unit 320 from the main body 10 or separate the flow path connecting members 330 and 330a and the lower heating unit 320 from the main body. do.

[Installation structure of channel connection member]

* FIG. 9 is a perspective view showing a separate flow path connecting member of the cooking appliance according to an embodiment of the present invention, and FIG. 10 is a cross-sectional perspective view showing an enlarged portion C of FIG. 5.

9 and 10, the flow path connection member 330 may include duct portions 331 and 333 and a coupling portion 335.

The duct portions 331 and 333 are provided outside the cooking chamber 31 to form an outer wall surrounding the guide passage c from the outside. The guide passage (c) forms a passage connecting the first discharge port (a) and the second discharge port (b) in a space surrounded by the duct portions 331 and 333.

The duct portions 331 and 333 may include a first duct portion 331 forming an outer wall surrounding the periphery of the first discharge port a, and a second duct forming an outer wall surrounding the periphery of the second discharge port b It may be formed including the unit 333.

According to the present embodiment, the lower case 321 is disposed such that the sidewall portion 321b is positioned laterally inside the sidewall portion 15. In addition, the first duct part 331 is inserted into a space formed between the lower case 321 and the lower surface 13 in the lower space part 33, and the second duct part 333 is a side space part ( 35) is placed inside.

The duct portions 331 and 333 including the first duct portion 331 and the second duct portion 333 are formed by connecting the first duct portion 331 and the second duct portion 333 to form a b shape. . At this time, the first duct part 331 is installed in close contact with the side wall part 321b inside the lower space part 33, and the second duct part 333 is the side part 15 inside the side space part 35 It is installed in close contact with.

The coupling portion 335 is provided to closely couple the duct portions 331 and 333 to any one of the side wall portion 321b and the side portion 15 of the lower case 321. The coupling portion 335 is formed to protrude from the edge of the sidewall portion 321b that is in contact with the sidewall portion 321b corresponding to the side of the cooking chamber 31 or the sidewall portion 321b corresponding to the side of the cooking chamber 31 do. In this embodiment, each of the coupling portions 335 is illustrated as being formed by bending each rim portion of the duct portions 331 and 333 in the outward direction of the duct portions 331 and 333. Each of these coupling portions 335 are connected to each of the rim portions of the duct portions 331 and 333 to form a b shape, respectively.

The coupling portion 335 as described above is formed to form a plane parallel to the side portion 15 or the side wall portion 321b. Specifically, the coupling portion 335 formed to protrude from the edge of the first duct portion 331 is formed to form a plane parallel to the sidewall portion 321b, and is in surface contact with the sidewall portion 321b and is coupled. In addition, the coupling portion 335 protruding from the edge of the second duct portion 333 is formed to form a plane parallel to the side portion 15 and is in surface contact with the side portion 15 and is coupled.

That is, each coupling portion 335 formed on each rim portion of the duct portions 331 and 333 is in surface contact and coupled with the side wall portion 321b or the side portion 15, whereby the duct portions 331 and 333 are combined with the lower case 321 ) Or the side surface of the cooking chamber 31 and may be firmly coupled.

At this time, the coupling between the coupling portion 335 and the side wall portion 321b, and the coupling between the coupling portion 335 and the side portion 15 may be performed using a fastening member such as a bolt that penetrates and couples the two members that are in contact with each other. Can be done. In this way, the duct portions 331 and 333 coupled with the side surfaces of the lower case 321 or the cooking chamber 31 may be firmly coupled to a designated position so that the position of the guide passage c formed therein is stably maintained, and is necessary. Depending on the case, it may be easily separated from the side of the lower case 321 or the cooking chamber 31.

In this embodiment, it is exemplified that the flow path connection member 330 is provided in the form of a duct with a space formed therein and an open side portion toward the cooking chamber 31. That is, the flow path connecting member 330 of the present embodiment has a first duct portion 331 provided in the form of a duct in which an upper portion toward the lower surface portion 13 is opened, and a duct shape in which one side portion toward the side portion 15 is opened. The second duct part 333 provided with is formed in a b shape and is provided in a form connected.

According to this flow path connecting member 330, the open upper side of the first duct part 331 is in close contact with the lower surface 13, and the open side of the second duct part 33 is the side part 15 Is tightly coupled to.

Accordingly, a guide passage (c) surrounded by the first duct part 331 and the lower surface part 13 coupled to each other is formed inside the first duct part 331, and inside the second duct part 333 A guide passage (c) surrounded by the second duct portion 333 and the side portion 15 coupled to each other is formed, and as a result, a guide passage (c) extending in a b shape is formed inside the passage connecting member 330 do.

As another example, the flow path connecting member 330 may be provided in the form of a duct with no open portions except for one end facing the first discharge port a and the other end facing the second discharge port b.

However, as illustrated in this embodiment, when the flow path connection member 330 is provided in the form of a duct in which a space is formed inside and one side toward the cooking chamber 31 is opened, the manufacture of the flow path connection member 330 The material cost required for this can be reduced, and the flow path connection member 330 can be manufactured more easily. In addition, since the plurality of flow path connection members 330 can be stacked and stored through the open portion of the flow path connection member 330, the advantage of easy storage and handling of the flow path connection member 330 required for manufacturing a cooking appliance is also obtained. You will be able to.

Meanwhile, the cooking appliance according to the present embodiment may further include a clip member 340.

The clip member 340 is provided on the outside of the side portion 15, and a portion of the coupling portion 335 formed on the edge portion of the flow path connecting member 330 is pressed toward the side portion 15 so as to be in close contact with the side portion 15. .

The clip member 340 is provided outside the side portion 15 and is disposed above the second discharge port b. In this embodiment, the clip member 340 is illustrated as being provided in the form of a plate spring having an elastic force capable of being in close contact with the side portion 15 of the lower portion thereof.

The upper portion of the clip member 340 is fixedly coupled to the side portion 15. Further, the lower portion of the clip member 340 extending downward from the upper portion of the clip member 340 fixedly coupled to the side portion 15 as described above is not coupled to the side portion 15. Accordingly, a fitting groove 341 is formed between the side portion 15 and the clip member 340, the upper part is closed and the lower part is open.

In the fitting groove 341 formed as described above, a portion of the coupling portion 335, more specifically, at least a portion of the coupling portion 335 formed at an upper edge portion of the second duct portion 333 is inserted. The insertion of the coupling portion 335 may be made until the upper end of the coupling portion 335 interferes with the blocked upper portion of the fitting groove 341, and fitting between the clip member 340 and the coupling portion 335 made in this way By coupling, the vertical position of the flow path connecting member 330 may be guided.

That is, when the flow path connection member 330 is installed, the upper end of the flow path connection member 330 is inserted into the clip member 340 to guide the vertical position at which the installation of the flow path connection member 330 is to be made. Since the connection member 330 is also temporarily fixed at the upper end, the operation of coupling the flow path connection member 330 to the lower case 321 or the lower surface 13 or the side surface 15 using a fastening member is further performed. It can be done easily.

[Structure of opening guide]

Meanwhile, the cooking appliance according to the present embodiment may further include a heat guide unit 350. The heat guide part 350 is provided to serve to convert a flow direction of the heat flowing upward through the guide passage (c) to a direction passing through the second discharge port (b).

The opening guide portion 350 is formed to protrude from the side portion 15 so as to be disposed in the guide passage c formed in the passage connecting member 330. The heat guide portion 350 formed as described above has a barrier wall that blocks the flow of heat flowing along the guide passage (c) on the upper portion of the second discharge port (b).

Preferably, the opening guide portion 350 is provided in a form of forming an inclined surface in which the gap with the side portion 15 becomes narrower toward the top. The flow of heat flowing upward along the guide passage (c) can be naturally guided toward the second discharge port (b) along the inclined barrier wall formed by the heat guide portion 350, and accordingly, the cooking chamber 31 ) It is possible to more smoothly discharge the heat through the side.

In the present embodiment, the formation of the second discharge port (b) and the opening guide portion 350 is exemplified by the fact that a portion of the side portion 15 is cut off. According to this, the opening guide portion 350 is formed by being bent outwardly of the side portion 15 around the upper end connected to the side portion 15 after a portion of the side portion 15 is cut, and the second discharge port (b) is In the side portion 15, the opening guide portion 350 is formed in a separated portion.

That is, according to the cooking apparatus of the present embodiment, a passage for supplying heat to the side of the cooking chamber 31 and the flow of heat toward the passage is only a simple operation of bending a portion of the side portion 15 without adding an additional structure. Since the structure for inducing the can be formed at once, it is possible to additionally provide an advantage of suppressing an increase in cost and time required for manufacturing a cooking appliance.

[Installation structure of lower heating unit]

FIG. 11 is a cross-sectional perspective view illustrating a state in which the flow path connecting member is removed from the cooking appliance illustrated in FIG. 10, and FIG. 12 is a cross-sectional view taken along line D-D of FIG. 1.

11 and 12, the lower heating unit 320 may be installed on the main body 10 to be retractable.

According to this embodiment, in the lower space part 33, the lower space part 33 is provided between the bottom of the main body 10 and the cooking chamber 31, that is, between the bottom part 17 and the lower surface part 13. More specifically, an opening portion O that opens toward the side space portion 35 is formed. In this embodiment, the opening portion O is a virtual boundary that divides between the lower space portion 33 and the side space portion 35 connected to each other in the lateral direction, and the lower space portion 33 and the side space portion 35 It is defined as a portion formed between the lower space portion 33 and the side space portion 35 to form a passage connecting between.

The lower heating unit 320 may be inserted into the lower space 33 or withdrawn from the lower space 33 through the opening O formed as described above. At this time, the lower heating unit 320 is inserted and withdrawn. A possible installation structure may be formed by an installation structure of the lower case 321 which is slidably installed on the main body 10. Hereinafter, a slidable installation structure of the lower case 321 installed to be retractably installed on the main body 10 will be described in detail.

According to this embodiment, a space formed in the lower space part 33 to allow insertion of the lower case 321 forming the exterior of the lower heating unit 320 is provided, and the side of the lower space part 33 An opening (O) is formed to open the side of the lower space (33) toward the side space (35).

The lower case 321 may be slidably inserted into the lower space 33 from the outside of the main body 10 through the opening O, and the opening O in the lower space 33 It is installed so that it can be withdrawn to the outside of the main body 10 through.

At this time, the opening part O forms a lateral passage between the lower space part 33 and the side space part 35, and accordingly, the lower case 321 slides in the lower space part 33 in the lateral direction. It can be installed where possible.

In the cooking appliance of the present embodiment, various configurations may be provided for guiding the sliding of the lower case 321 or fixing the position of the installed lower case 321. A detailed description of these configurations will be described below.

[Sliding connection structure in the upper part of the lower case]

One of several configurations for guiding the sliding of the lower case 321 or fixing the position of the installed lower case 321 is a configuration that guides the sliding of the lower case 321 from the top of the lower case 321 .

According to this configuration, as shown in FIG. 11, a guide protrusion 360 is provided on the upper portion of the lower space 33, and a guide groove 321c in which the guide protrusion 360 engages with the lower case 321. ) Is formed.

The guide protrusion 360 is installed on the lower surface 13 that is the lower boundary surface of the cooking chamber 31 and is provided in a shape protruding from the lower surface 13 toward the lower case 321. The guide protrusion 360 is formed to extend in a lateral direction, that is, along a direction in which the lower case 321 slides, thereby forming a path for guiding the sliding of the lower case 321.

At the upper end of the side wall portion 321b forming the side surface of the lower case 321, a guide groove 321c into which the guide protrusion 360 is fitted is formed to be concave in a shape corresponding to the shape of the guide protrusion 360. The guide groove 321c may be formed on a pair of sidewall portions 321b disposed to face each other in the lateral direction among the four sidewall portions 321b constituting the side surface of the lower case 321. By a fitting coupling made between the guide protrusion 360 and the guide groove 321c, the engagement between the guide protrusion 360 and the side wall portion 321b is achieved.

The lower case 321 may be slidably coupled to the guide protrusion 360 by engagement between the guide protrusion 360 and the side wall 321b, whereby the lower case 321 is restricted from movement in the front and rear directions. While being able to slide in the lateral direction, it may be combined with the main body 10.

In this embodiment, a plurality of guide protrusions 360, for example, three guide protrusions 360 are arranged at a predetermined interval along the front-rear direction, and a corresponding number of guide grooves ( 321c) is illustrated as being formed.

Accordingly, the engagement between the guide protrusion 360 and the lower case 321 can be made at a plurality of points, whereby the shaking of the lower case 321 in the front and rear direction is reduced, and the sliding of the lower case 321 is further reduced. It can be made stably.

In addition, the lower case 321 is formed with a contact surface portion 321d forming a contact surface with the lower surface portion 13 on the upper side of the side wall portion 321b. The contact surface portion 321d is bent at the upper end portion of the side wall portion 321b to form a plane parallel to the lower surface portion 13, and is in surface contact with the lower surface portion 13 and is in close contact with the lower surface portion 13.

The contact surface portion 321d formed in this way enhances the strength of the side wall portion 321b and makes surface contact between the upper end portion and the lower surface portion 13 of the side wall portion 321b, thereby forming the lower case 321 and It serves to increase the adhesion between the lower surface (13).

[Coupling structure between lower case and flow path connecting member]

Referring to FIG. 12, the first discharge port (a) is a pair of side wall portions 321b disposed to face each other in the lateral direction among the four side wall portions 321b constituting the side of the lower case 321, that is, an open portion. It may be formed on the sidewall portion 321b disposed on the (O) side and the sidewall portion 321b disposed opposite the opening portion O, respectively. In addition, the second discharge ports b may be respectively formed on a pair of side surfaces 15 facing each other.

For convenience of explanation, hereinafter, the sidewall portion 321b disposed on the opening portion O side is referred to as the left sidewall portion 321b, and the sidewall portion 321b disposed opposite the opening portion O is the right sidewall portion. In 321b, the side portion 15 disposed on the open portion O side will be referred to as the left side portion 15, and the side portion 15 disposed opposite the opening portion O will be referred to as the right side portion 15. .

In addition, the flow path connecting members 330 and 330a are disposed opposite the first flow path connecting member 330 and the opening O, which are disposed on the opening O side to form the guide flow path c, and are disposed opposite the guide flow path c. It may be divided into a second flow path connecting member (330a) forming a).

13 is a cross-sectional view showing an enlarged portion E of FIG. 12, and FIG. 14 is a cross-sectional view showing an enlarged portion F of FIG. 12.

12 and 13, the first flow path connecting member 330 is fixedly coupled to the left side portion 15 and the left side wall portion 321b at the opening (O) side, so that the lower case 321 is attached to the main body. Fix it at (10).

As an example, the coupling between the first flow path connecting member 330 and the left side portion 15 is, as shown in FIGS. 10 and 13, the coupling portion 335 formed on the edge of the second duct portion 333 and the left side. In a state in which the side portions 15 are in surface contact with each other and are butted, a fastening member penetrates and couples the two butted members.

As another example, the coupling between the first flow path connecting member 330 and the left side portion 15 is made only by coupling between the coupling portion 335 formed on the upper edge of the second duct portion 333 and the clip member 340. May be.

As another example, the coupling between the first flow path connecting member 330 and the left side portion 15 is a coupling between the coupling portion 335 formed on the upper end of the second duct portion 333 and the clip member 340, and Except for the other coupling portion 335 and the side portion 15 may be made in a form in which all of the fastening in the form of fixing using a fastening member is implemented.

And the coupling between the first flow path connecting member 330 and the left side wall portion 321b, the coupling portion 335 formed on the edge of the first duct portion 331 and the left side wall portion 321b are in surface contact with each other, In the state, it may be formed in a form in which a fastening member penetrates and couples two butted members.

When the lower case 321 is to be withdrawn, the fastening member connecting the first flow path connecting member 330 and the left side portion 15 is separated from the first flow path connecting member 330 and the left side portion 15. ), a passage through which the lower case 321 can be pulled out through the opening (O) in the lateral direction is secured.

At this time, the first flow path connecting member 330 is separated from the main body 10 together with the lower case 321 when the lower case 321 is withdrawn (see FIG. 15 ).

As another example, the coupling between the first flow path connecting member 330 and the left side portion 15, and the coupling between the first flow path connecting member 330 and the left side wall portion 15 in order to withdraw the lower case 321 You can also turn it off. In this case, in a state in which the first flow path connecting member 330 is completely separated from the left side portion 15 and the lower case 321, the lower case 321 can be withdrawn laterally through the opening portion O. A passage is secured.

12 and 14, the second flow path connecting member 330a is fixedly coupled to the right side portion 15 on the opposite side of the opening portion O, and is detachably contacted with the right side wall portion 321b.

As an example, the coupling between the second flow path connecting member 330a and the right side portion 15 is such that the coupling portion 335 formed on the edge of the second duct portion 333 (see FIG. 9) and the right side portion 15 face each other. In a contacted and butted state, a fastening member penetrates and couples the two butted members.

As another example, the coupling between the second flow path connecting member 330a and the right side portion 15 is made only by coupling between the coupling portion 335 formed on the upper edge of the second duct portion 333 and the clip member 340. May be.

As another example, the coupling between the second flow path connecting member 330a and the right side portion 15 is a coupling between the coupling portion 335 formed on the upper end of the second duct portion 333 and the clip member 340, Except for the other coupling portion 335 and the side portion 15 may be made in a form in which all of the fastening in the form of fixing using a fastening member is implemented.

However, on the opposite side of the open part (O), when the lower case 321 is withdrawn, the separation between the second flow path connecting member 330a and the lower case 321 occurs, unlike from the open part (O) side. When the two-channel connection member 330a is separated from the lower case 321, the coupling between the second flow-path connection member 330a and the right side portion 15 is difficult to be maintained. Therefore, the coupling between the second flow path connecting member 330a and the right side portion 15 is preferably made in a form including coupling using a fastening member.

[Support structure of lower case of support]

Referring to FIG. 12, the cooking appliance according to the present embodiment may further include supports 370 and 380.

The supports 370 and 380 are provided on the bottom part 17 and support the lower case 321 so that the lower case 321 inserted into the lower space part 33 is disposed at a set position. According to this embodiment, the supports 370 and 380 may be divided into a first support 370 and a second support 380.

The first support 370 is disposed on the open portion O side, that is, on the left side wall portion 321b side of the lower case 321. The first support 370 prevents movement of the lower case 321 installed at the setting position in the withdrawal direction and supports the left portion of the lower case 321 from the lower side.

The second support 380 is disposed opposite the opening portion O, that is, on the right side wall portion 321b side of the lower case 321. The second support 380 prevents movement of the lower case 321 installed at the setting position in the insertion direction and supports the right part of the lower case 321 from the lower side.

That is, in the lower case 321 of the present embodiment, both sides in the lateral direction are supported upward by the first support 370 and the second support 380 disposed to be spaced apart from each other along the lateral direction. In this way, the lower case 321 supported by the supports 370 and 380 may be installed at a position spaced apart from the bottom 17 by a predetermined interval in the upper direction. In addition, the lower case 321 is at a set position, that is, the efficient and stable combustion of the lower heating unit 323 installed inside the lower case 321 and smooth coupling between the lower case 321 and the flow path connecting members 330 and 330a is achieved. It will be able to be installed in a set location to allow it to be built.

Hereinafter, specific configurations of the first support 370 and the second support 380 will be described.

Referring to FIGS. 12 and 13, the first support 370 may be configured to include a first coupling part 371, a first support part 373, and first arresting parts 375 and 376.

The first coupling portion 371 is formed to form a plane parallel to the bottom portion 17 and is coupled to the upper portion of the bottom portion 17. In addition, the first support portion 373 is connected to the first coupling portion 371 and installed on the bottom portion 17, and at a position spaced from the bottom portion 17 in the upper direction, the bottom surface of the lower case 321 is It forms a support surface that is supported from the bottom.

In this embodiment, the first support portion 373 is formed in a shape having a cross section of a ┌┐ shape, and the first coupling portion 371 is at both lower ends of the first support portion 373, respectively. It is exemplified that it is formed to protrude in the outward direction.

The first blocking portions 375 and 376 are formed to protrude upward from the first supporting portion 373. The first blocking portions 375 and 376 are provided to interfere with the left side wall portion 321b of the lower case 321 located at the set position.

The first blocking portions 375 and 376 are formed to protrude upwardly from the first supporting portion 373 to form a vertical blocking wall, and the blocking plate 375 is provided with a first supporting portion ( It may include a connection plate 376 connected to the 373 so as to be elastically deformable in the vertical direction.

In this embodiment, it is exemplified that the first blocking portions 375 and 376 are formed by cutting and bending a portion of the first supporting portion 373. That is, a part of the first support part 373 is cut into a C shape to form the connection plate 376, and a part of the connection plate 376 formed as described above is bent upward to form the stop plate 375.

At this time, the connection plate 376 may be elastically deformed in the vertical direction around one side connected to the first support part 373, and the stop plate 375 connected to the connection plate 376 is subjected to a pressing force acting in the downward direction. Its position can be changed in the downward direction, and it can be returned to its original position when the applied pressure disappears.

In addition, the connection plate 376 provided to be elastically deformed as described above may provide an elastic force to push up the left portion of the lower case 321 in the upper direction. In this case, the connection plate 376 increases the degree of adhesion between the lower case 321 and the lower surface 13 by pressing the left portion of the lower case 321 upward, so that the lower case 321 and the lower surface 13 ) It acts to suppress the leakage of heat through the gap and the occurrence of rattle of the lower case 321.

12 and 14, the second support 380 will be configured in a form including a second coupling portion 381, a connection portion 382, a second support portion 383 and a second restraining portion 385. I can.

The second coupling portion 381 is formed to form a plane parallel to the bottom portion 17 and is coupled to the upper portion of the bottom portion 17, and the second support portion 383 extends upward from the second coupling portion 381 do. Further, the second support part 383 is formed to extend from the connection part 382 in the insertion direction of the lower case 321, and at a position spaced from the bottom part 17 in the upper direction, the bottom surface of the lower case 321 is lowered. To form a support surface that is supported by

The second stopping part 385 protrudes upward from the second support part 383 so as to interfere with the side opposite the opening part O of the lower case 321 located at the set position, that is, the right side wall part 321b. It is prepared.

* In this embodiment, it is exemplified that the second support 380 is formed by bending a rectangular metal plate a plurality of times. That is, based on the formation position of the second coupling part 381, when the rectangular metal plate is bent upward, a boundary between the second coupling part 381 and the connection part 382 is formed, and corresponding to the connection part 382 When the metal plate is bent downward in the region, a boundary between the connection part 382 and the second support 383 is formed, and if the metal plate is bent upward in the region corresponding to the second support 383, the second support ( A boundary between the 383 and the second blocking portion 385 may be formed.

At this time, the connection part 382 does not extend in a vertical direction from the second coupling part 381, but forms an inclined surface inclined upward in the direction of insertion of the lower case 321, that is, in a direction opposite to the opening part O. It is extended in the form of The connection portion 382 forming the inclined surface as described above serves as a guide surface for guiding the lower case 321 to smoothly slide toward the second support portion 383 when the lower case 321 is inserted.

In addition, the connection portion 382 extending obliquely as described above may be elastically deformed in the vertical direction around one side connected to the second coupling portion 381. The connection portion 382 provided to be elastically deformable as described above may provide an elastic force for pushing the second support portion 383 upward. And the second support portion 383, which is pushed upward by this elastic force, presses the right portion of the lower case 321 supported by the second support portion 383 in the upper direction, so that the lower case 321 and the lower surface thereof are pressed. By increasing the degree of adhesion between the parts 13, the leakage of heat through the gap between the lower case 321 and the lower surface 13 and the occurrence of bumps in the lower case 321 are suppressed.

[Installation structure for inserting and withdrawing the lower heating unit]

FIG. 15 is a cross-sectional view showing a state in which the lower heating unit shown in FIG. 12 is partially pulled out, FIG. 16 is a cross-sectional view showing an enlarged portion G of FIG. 15, and FIG. 17 is It is an enlarged cross-sectional view. In addition, FIG. 18 is a cross-sectional view showing an enlarged portion H of FIG. 15, and FIG. 19 is a cross-sectional view showing a drawing state of the lower heating unit shown in FIG. 15.

Hereinafter, an installation structure capable of inserting and withdrawing the lower heating unit 320 according to the present embodiment will be described with reference to FIGS. 10 to 19.

Referring to FIG. 12, the lower heating unit 320 is inserted into the lower space 33 and fixed at a set position, thereby being installed in the outer lower part of the cooking chamber 31. Hereinafter, the installation structure of the lower heating unit 320 installed at the setting position as described above will be described in detail.

10 to 13, in the left part of the lower case 321 inserted into the lower space part 33 to be positioned at a set position, a support structure formed by the first support 370 and the lower case 321 ) And the first flow path connection member 330, and the connection structure between the first flow path connection member 330 and the left side portion 15 is confirmed.

First, looking at the support structure formed by the first support 370, the bottom surface of the left portion of the lower case 321 inserted to be located at the setting position is the first support 373 or the connecting plate ( 376) in the upper direction. And the left side wall portion 321b of the lower case 321 is blocked by a stop plate 375 forming a vertical barrier wall in the lateral direction outside of the left side wall portion 321b, and accordingly, the lower portion installed at the set position Movement of the case 321 toward the open portion O may be prevented.

Next, looking at the coupling structure between the lower case 321 and the first flow path connection member 330, the first flow path connection member 330 is installed to be located outside the lower case 321 in the lateral direction. Accordingly, the passage between the lower space part 33 and the side space part 35 through which the lower heating unit 320 is drawn out in the lateral direction is blocked by the first flow path connecting member 330 installed as described above.

The coupling portion 335 formed at the lower end of the first flow path connecting member 330 installed as described above, that is, the lower edge portion of the first duct portion 331, is formed to form a plane parallel to the left side wall portion 321b. It is in close contact with the left side wall portion 321b. At this time, the coupling portion 335 may be coupled to the first flow path connecting member 330 and the first support 370 in a form that is forcibly fitted between the left side wall portion 321b and the stop plate 375 that are butted to each other. have.

Accordingly, in the left side wall portion 321b, the coupling portion 335 is forcibly fitted between the left side wall portion 321b and the stop plate 375 to form a coupling structure in which the three members are butted to each other. In this coupling structure, the lower end of the first flow path connecting member 330 may be detachably fixed between the left side wall portion 321b and the stop plate 375 without being coupled by the fastening member.

In this embodiment, a fixed coupling is made using a fastening member only between the left side wall portion 321b and the coupling portion 335 among the three butt members, and the stop plate 375 and the left side wall portion 321b and the stop plate ( It is exemplified that a fixed coupling using a fastening member is not made between the 375 and the coupling part 335.

When the lower case 321 and the first support 370 and the first flow path connecting member 330 are coupled in this form, the lower heating is performed by simply removing the stop plate 375 without the need to unfasten the fastening member. Not only can the unit 320 be withdrawn, but also the lower heating unit 320 can be withdrawn simply by pulling the first flow path connecting member 330.

As another example, in the left side wall portion 321b, in a state in which the left side wall portion 321b, the stop plate 375, and the coupling portion 335 are butted to each other, the three butted members are coupled by a fastening member. A fixed coupling between the lower case 321 and the first support 370 and the first flow path connecting member 330 may be made.

As another example, the coupling between the first flow path connecting member 330 and the left side wall portion 321b is the coupling portion 335 and the left side wall portion ( 321b) may be formed in a form that further includes a direct coupling.

For example, the coupling between the first flow path connecting member 330 and the left side wall portion 321b is a combination of the left side wall portion 321b butted against each other, the stop plate 375 and the coupling portion 335 by force fitting, or It may be formed in a form including a coupling structure coupled by a fastening member, and a coupling structure in which the coupling portion 335 and the left side wall portion 321b directly abutted to each other are directly coupled.

Next, looking at the coupling structure between the first flow path connecting member 330 and the left side portion 15, a portion of the coupling portion 335, more specifically, a coupling portion formed at the upper edge portion of the second duct portion 333 335 may be detachably fixed to the side portion 15 by the clip member 340.

In addition, the coupling portion 335 formed on the remaining edge portion of the second duct portion 333 is in close contact with the side portion 15 by fixing the upper and lower ends of the first flow path connecting member 330 as described above. It is subjected to the pressing force of, and accordingly, it is possible to stably adhere to the side portion 15 without a fastening operation using a fastening member.

In addition, the coupling between the first flow path connection member 330 and the left side portion 15 may be formed in a form including a coupling using a fastening member. In this case, between the first flow path connection member 330 and the left side portion 15 As the adhesion is improved, the first charged connection member 330 can be more stably coupled to the left side portion 15.

Meanwhile, referring to FIGS. 12 and 14, in the right part of the lower case 321 inserted into the lower space part 33 to be positioned at the setting position, the support structure formed by the second support 380 and the second The coupling structure between the flow path connecting member 330a and the right side portion 15 is confirmed.

First, looking at the support structure made by the second support 380, the bottom surface of the right part of the lower case 321 inserted to be positioned at the setting position is upper by the second support 383 of the second support 380 It is supported in the direction. In addition, the right side wall portion 321b of the lower case 321 is blocked by the second blocking portion 385 forming a vertical barrier wall from the lateral outer side of the right side wall portion 321b.

Accordingly, the movement of the lower case 321 installed at the setting position to the opposite side of the opening (O) is prevented, so the position of the lower case 321 pushed into the interior of the lower space unit 33 is guided to the setting position. Can be.

Next, looking at the coupling structure between the lower case 321 and the second flow path connection member 330a, the second flow path connection member 330a is installed to be located outside the lower case 321 in the lateral direction. Accordingly, the passage between the lower space part 33 and the side space part 35 through which the lower heating unit 320 is drawn out in the lateral direction is blocked by the second flow path connecting member 330a installed as described above.

The coupling portion 335 formed at the lower end of the second flow path connecting member 330a installed as described above, that is, the lower edge portion of the first duct portion 331, is formed to form a plane parallel to the right side wall portion 321b. It is in close contact with the right side wall portion 321b. At this time, the coupling part 335 is to be coupled to the second flow path connecting member 330a and the second support 380 in a form that is forcibly fitted between the right side wall part 321b and the second support part 383 butted to each other. I can.

At this time, the coupling structure between the right side wall portion 321b formed in the right portion of the lower case 321 and the second flow path connecting member 330a is formed with the left side wall portion 321b formed in the left portion of the lower case 321 What is different from the coupling structure between the one flow path connection member 330 is that a fixed coupling between the lower case 321 and the second flow path connection member 330a is not made.

That is, the lower end coupling portion 335 of the second flow path connecting member 330a butted with the second stop portion 385 is fixedly coupled to any of the right side wall portion 321b and the second stop portion 385 Otherwise, it is fixedly coupled using a fastening member only with the second blocking portion 385 excluding the right side wall portion 321b.

This coupling structure is designed in consideration of the withdrawal of the lower heating unit 320, and if the right side wall portion 321b, that is, the right side of the lower case 321 and the second flow path connecting member 330a are fixedly coupled to each other If so, both sides of the oven unit 30 must be opened for withdrawal of the lower heating unit 320, and all of the second flow path connecting members 330a installed on both sides must be separated from the lower heating unit 320, etc. This is a result of considering that the withdrawal operation of the unit 320 may become more complex and difficult.

Next, looking at the coupling structure between the second flow path connecting member 330a and the right side portion 15, a portion of the coupling portion 335, more specifically, a coupling portion formed on the upper edge portion of the second duct portion 333 (335; see FIG. 9) may be detachably fixed to the side portion 15 by a clip member 340 (see FIG. 10).

If the lower coupling portion 335 of the second flow path connecting member 330a is fixedly coupled to the second blocking portion 385, the coupling portion 335 formed on the remaining edge portion of the second duct portion 333 is By the fixing of the upper and lower ends of the second flow path connecting member 330a as described above, a pressing force in a direction in close contact with the right side portion 15 is applied, and accordingly, the side portion 15 without a fastening operation using a fastening member is applied. It will be able to adhere stably.

Installation of the lower heating unit 320 and the second flow path connecting member 330a may be performed in the following order.

First, the installation of the second flow path connecting member 330a at the right side of the oven unit 30 is carried out, but first, the engaging portion 335 located at the upper end of the second flow path connecting member 330a is clipped to the clip member 340. It is inserted into and temporarily fixes the upper end of the second flow path connecting member 330a. By the coupling between the clip member 340 and the second flow path connection member 330a made as described above, the vertical position of the second flow path connection member 330a may be guided.

Then, in a state in which the coupling portion 335 located at the lower end of the second flow path connecting member 330a is butted to the second blocking portion 385, these members are fixed using a fastening member, the oven portion 30 The installation of the second flow path connecting member 330a in the right part of the is completed.

When the installation of the second flow path connecting member 330a on the right side of the oven unit 30 is completed, the lower heating unit 320 is pushed in the lateral direction through the opening (O). ) To be inserted into the interior of the lower space (33).

When the lower heating unit 320 slides and passes through the position at which the lower case 321 and the connection part 382 come into contact, the lower heating unit 320 rides the inclined surface formed on the connection part 382 and rides the second support part 383. ) Side. That is, the inclined connection part 382 located on the sliding path of the lower heating unit 320 guides the movement of the lower heating unit 320 toward the second support part 383 (see FIG. 18).

When the lower heating unit 320 is inserted to the set position, interference between the second blocking unit 385 and the right side wall 321b occurs, and accordingly, further sliding of the lower heating unit 320 is prevented, and the lower Insertion of the heating unit 320 is completed.

When the insertion of the lower heating unit 320 is completed as described above, as shown in Figs. 10 to 13, the first flow path connecting member 330 is installed at the left side of the oven unit 30, but first The coupling portion 335 located at the upper end of the first flow path connection member 330 is inserted into the clip member 340 to temporarily fix the upper end of the first flow path connection member 330. By the coupling between the clip member 340 and the first flow path connection member 330 made as described above, the vertical position of the first flow path connection member 330 may be guided.

As described above, in a state in which the upper end of the first flow path connection member 330 is temporarily fixed and the position of the first flow path connection member 330 is guided in the vertical direction, the left side wall portion 321b and the stop plate 375 and the coupling portion The lower end of the first flow path connecting member 330 is brought into close contact with the lower case 321 so that the 335 abuts each other.

Then, the left side wall portion 321b butted to each other, the stop plate 375 and the coupling portion 335 are fixed using a fastening member, while the left side wall portion 321b directly abutted to each other at a different position from the same. When the and coupling portion 335 is fixed with a fastening member, the installation of the lower case 321 and the first flow path connecting member 330 in the left portion of the lower case 321 is completed.

At this time, on the right side of the lower case 321, a fixed coupling between the lower case 321 and the second flow path connecting member 330a is not made, but the right side wall portion 321b is in close contact with the second flow path connecting member 330a. If a combination between the left side wall portion 321b and the stop plate 375 or the left side wall portion 321b and the first flow path connecting member 330 is made on the left side of the lower case 321 so that the pressing force is applied, the lower case The adhesion between the right side of the 321 and the second flow path connecting member 330a is improved, so that the occurrence of heat leakage through the gap between the right side of the lower case 321 and the second flow path connecting member 330a can be suppressed. .

Meanwhile, withdrawal of the lower heating unit 320 installed as described above may be performed in the following order.

First, as shown in FIG. 15, the outer panel 18 and the gasket case 19 installed on the left side of the oven unit 30 are separated from the main body 10, so that the side space portion 35 becomes the oven unit 30 Open to the outside of the door.

Then, by separating the upper end of the first flow path connection member 330 coupled with the clip member 340 (see FIG. 10) from the clip member 340, the first flow path connection member 330 and the left side portion 15 ) To release the bond.

Then, as shown in Figs. 15 to 17, the blocking plate 375 is pulled downward so that the obstacle that prevents the movement of the lower case 321 is removed, and then the lower case 321 is pulled. give.

If the lower case 31, the stop plate 375, and the first flow path connecting member 330 are fixedly coupled together by a fastening member, the fastening member is released from them to release the coupling between them. .

Accordingly, the lower heating unit 320, as shown in FIG. 19, is separated from the second flow path connecting member 330a installed on the right side of the oven unit 30 and exits from the inside of the lower space unit 33. It moves in the lateral direction, and when it comes out completely from the inside of the oven part 30 of the lower heating unit 320, the withdrawal of the lower heating unit 320 is completed.

At this time, regardless of the coupling between the first support 370 and the lower case 321 and the first flow path connection member 330 released in the entire process, the first flow path connection member 330 is fixed to the lower case 321 If the coupling is maintained, the first flow path connecting member 330 may be drawn out from the inside of the oven unit 30 together with the lower heating unit 320 while being coupled to the lower heating unit 320.

In this case, without having to put a hand deep into the oven unit 30 to hold the lower case 321, the lower heating is performed by simply pulling the first flow path connecting member 330 exposed on the side space unit 35. Since the unit 320 can be easily pulled out, the lower heating unit 320 can be pulled out more easily and conveniently.

For maintenance of the lower heating unit 320, conventionally, the lower surface 13 of the cooking chamber 31 is configured in the form of a plate detachable from the cooking chamber 31, or the bottom that forms the bottom surface of the main body 10 The method of constructing (17) in a separable form has been used.

However, when the lower surface 13 of the cooking chamber 31 is configured in a plate shape detachable from the cooking chamber 31, the aesthetics of the cooking appliance is impaired, and foreign matter is trapped in the gap, which is not good for hygiene. In order to withdraw the heating unit 320, the operator must lean toward the inside of the cooking chamber 31, and it is difficult to secure a work field of view, resulting in various difficulties in maintenance work.

In addition, in the case of configuring the bottom portion 17 forming the bottom surface of the main body 10 in a detachable shape, maintenance work for the lower heating unit 320 becomes possible only when the cooking appliance is turned over. This not only becomes very difficult and difficult, but there is a high risk of a safety accident in which the cooking appliance is damaged or the worker is injured in the process of turning over the cooking appliance.

In consideration of these points, the cooking appliance of this embodiment is configured to be inserted or withdrawn through the side of the cooking appliance as described above, without the need to separate the lower surface 13 of the cooking chamber 31 or turn the cooking appliance over. It provides an installation structure of the heating unit (320).

The cooking appliance of this embodiment, when repair or replacement of the lower heating unit 320 is required, can be easily and conveniently withdrawn through the side of the cooking appliance, so that maintenance work for the lower heating unit 320 is quick and easy. It can provide an effect that can be made conveniently.

In addition, the cooking appliance of this embodiment allows the lower heating unit 320 to be inserted or withdrawn without the need to separate the lower surface 13 of the cooking chamber 31 or turn the cooking appliance over, so that the bottom surface of the cooking chamber 31 is By enabling a smooth and flat surface to be realized, not only can it provide improved aesthetics, but also can provide an effect of lowering the risk of damage to cooking equipment and occurrence of safety accidents during maintenance work.

[Structure of the bottom part]

20 is a cross-sectional view taken along line I-I of FIG. 1.

5 and 20, the first heating unit 310 is installed at the rear side of the cooking chamber 31, and the air inlet hole 17a is provided at the rear side of the bottom portion 17 adjacent to the rear side of the cooking chamber 31. ) Is formed.

The air inlet hole 17a is formed to penetrate in the vertical direction at the rear side of the bottom portion 17, and forms a passage through which external air is introduced into the first heating unit 310.

According to this, the external air is introduced into the interior of the main body 10 through the air inlet hole 17a, more specifically, the interior of the lower space 33, and among the external air introduced into the lower space 33 A portion of the first heating unit 310 is introduced into the interior of the first heating unit 310 through a hole (not shown) formed on the rear side of the lower surface 13. As described above, the external air introduced into the first heating unit 310 is used as secondary air for stable combustion of the first heating unit 313 (see FIG. 4) provided inside the first heating unit 310. Can be used. In addition, the remaining part of the air introduced into the body 10 through the air inlet hole 17a flows through the lower space portion 33.

In addition, between the bottom surface of the lower heating unit 320, that is, between the bottom portion 321a and the bottom portion 17, a plurality of flow guide members 390 are installed at predetermined intervals in the lateral direction.

Each flow inducing member 390 is provided in the form of a side wall that partitions the space between the bottom surface and the bottom portion 17 of the lower heating unit 320 in the lateral direction, that is, the lower space portion 33. In addition, a flow path in the front-rear direction connecting the through hole 322 formed to penetrate the bottom portion 321a and the air inlet hole 17a is formed between the adjacent pair of flow guide members 390.

The flow inducing member 390 installed as described above has a flow path in the front-rear direction connecting between the through hole 322 and the air inlet hole 17a, so that external air introduced through the air inlet hole 17a is formed. It serves to induce a portion of the flow flowing inside the lower space part 33 toward the through hole 322 located in front of the air inlet hole 17a.

As a result, the supply of secondary air for stable combustion of the lower heating unit 323 provided inside the lower heating unit 320 can be promoted, so that the combustion stability of the lower heating unit 320 can be improved. .

In addition, the flow inducing member 390 installed as described above is coupled to the bottom portion 17 and serves as a structure to increase the strength of the bottom portion 17, thereby improving the durability of the bottom portion 17, and (17) It can also act to suppress the occurrence of torsion.

[Combustion control of the first heating unit and the lower heating unit]

21 is a flowchart showing an example of a combustion control process of the cooking appliance according to an embodiment of the present invention, and FIG. 22 is a view showing an example of a hot air flow formed inside the cooking appliance according to an embodiment of the present invention .

Hereinafter, a combustion control method of a cooking appliance according to an embodiment will be described with reference to FIGS. 21 and 22.

As described above, the oven unit 30 of the cooking appliance according to the present embodiment has two heating units therein, and one of the first heating units 310 is the cooking chamber 31 inside the cooking chamber 31. It is operated in a form of generating a circulating flow of heat circulating inside, and the other, the lower heating unit 320 is operated in a form in which heat is generated from the lower portion of the cooking chamber 31.

The cooking appliance of the present embodiment including the two heating units as described above may be operated in the following manner.

First, a simultaneous operation step (S1) of simultaneously operating the first heating unit 310 and the lower heating unit 320 is performed in an initial state in which no heating is performed inside the cooking chamber 31 at all.

In this simultaneous operation step (S1), combustion of the first heating unit 313 and combustion of the lower heating unit 323 are performed together. Accordingly, inside the cooking chamber 31, the heat generated by the lower heating unit 320 is generated while the heat is circulated through the cooking chamber 31 by the operation of the first heating unit 310. The flow of hot air discharged from the side of the cooking chamber 31 is generated together through the guide passage c formed in the passage connecting members 330 and 330a.

At this time, the heat discharged through the side of the cooking chamber 31, that is, through the second discharge port b, is a flow of heat generated by the operation of the first heating unit 310, that is, the heat circulating inside the cooking chamber 31. It merges with the circulating flow. Accordingly, in the interior of the cooking chamber 31, the heat generated by the combustion operation of the first heating unit 310 and the heat generated by the combustion operation of the lower heating unit 320 are combined together to circulate the interior of the cooking chamber 31. Therefore, the temperature in the cooking chamber 31 can be increased more quickly.

That is, by controlling the operation of operating the first heating unit 310 and the lower heating unit 320 at the same time, the cooking appliance of the present embodiment can quickly increase the temperature in the cooking compartment 31, through which the cooking compartment 31 By allowing the initial preheating of the oven to occur more quickly, it is possible to effectively shorten the time required for cooking.

On the other hand, as described above, the second discharge port (b) for forming a passage through the cooking chamber 31 for discharging the heat generated by the combustion operation of the lower heating unit 320 is formed on the side portion 15, It is formed on the lower side adjacent to the bottom surface of the cooking chamber 31. Accordingly, the heat generated by the lower heating unit 320 is discharged into the cooking chamber 31 through the side of the cooking chamber 31, and is discharged into the cooking chamber 31 from a lower portion adjacent to the bottom side of the cooking chamber 31. .

The heat discharged in this way merges with the circulation flow of the hot air circulating inside the cooking chamber 31 and circulates the entire inside of the cooking chamber 31, but before joining the circulation flow of the hot air, that is, the second discharge port (b) Immediately after being discharged into the cooking chamber 31 through the cooking chamber 31, a flow flow flowing along the bottom surface of the cooking chamber 31 is first seen.

Therefore, on foods located in the cooking chamber 31, a circulation flow of heat circulating the entire interior of the cooking chamber 31 and a flow of heat flowing along the bottom surface of the cooking chamber 31 act together.

For this reason, in addition to the action of heat circulating the entire interior of the cooking chamber 31, the action of heat flowing along the bottom surface of the cooking chamber 31 is added to the bottom surface of the food. Moreover, on the bottom surface of the food, not only the heat discharged through the second discharge port (b), but also through the bottom surface 13 heated by the combustion of the lower heating unit 323, that is, through the bottom surface of the cooking chamber 31 Heat transferred to can also be transferred additionally.

Accordingly, intensive heating in which heat of a relatively high amount of heat is applied to the bottom surface of the food compared to other parts of the food can be performed.

That is, the cooking appliance of this embodiment quickly increases the temperature in the cooking chamber 31 while evenly heating the entire cooking chamber 31 by controlling the operation of operating the first heating unit 310 and the lower heating unit 320 at the same time. Not only can it be made, but it is also possible to provide a intensive heating function for the bottom of the food.

On the other hand, after the simultaneous operation step (S1) as described above has progressed to the set point, the partial operation step (S2) in which only one of the first heating unit 310 and the lower heating unit 320 is operated is performed.

As an example, the partial operation step S2 may be performed in a form in which only the first heating unit 310 is operated. Accordingly, in the cooking chamber 31, heating is performed in which only the circulating flow of hot air circulating inside the cooking chamber 31 is generated by the operation of the first heating unit 310, and in the lower heating unit 320 Heating in the form in which the generated heat is discharged through the side of the cooking chamber 31 is stopped.

The partial operation step S2 made in this form may be selected when it is important to evenly cook the whole food, and cooking for food that requires relatively low intensive heating on the bottom of the food is in progress.

That is, in the cooking appliance according to the present embodiment, after the simultaneous operation step (S1) is performed first to rapidly increase the temperature in the cooking chamber 31 to a temperature suitable for cooking food, only the first heating unit 310 is operated. By performing food cooking in the form of performing the partial operation step S2 so as to be achieved, cooking can be performed to uniformly heat the entire food while effectively shortening the time required for cooking.

As another example, the partial operation step S2 may be performed in a form in which only the lower heating unit 320 is operated. Accordingly, inside the cooking chamber 31, only the heat generated by the lower heating unit 320 is discharged through the side of the cooking chamber 31, and heating by the operation of the first heating unit 310 is performed. Stopped.

The partial operation step S2 made in this form may be selected when cooking is performed on foods that require intensive heating on the bottom of the food, such as pizza.

That is, the cooking appliance according to the present embodiment first proceeds with the simultaneous operation step (S1) to rapidly increase the temperature in the cooking chamber 31 to a temperature suitable for cooking food, and then the temperature in the cooking chamber 31 required for cooking food. The bottom surface of food, such as pizza, is cooked in a more crispy form by performing food cooking in the form of performing a partial operation step (S2) so that only the lower heating unit 320 can be operated while maintaining a certain degree. As much as possible, the function of intensively heating the bottom of the food can be provided more effectively.

In addition, while the operation of the first heating unit 310 and the lower heating unit 320 is performed at the same time, the airflow formed by the operation of the convection fan 317 affects the combustion of the lower heating unit 323 and thus the lower heating unit There may be a problem in that the combustion of the lower heating unit 323 is unstable, such as the flame formed at 323 is shaking or complete combustion in the lower heating unit 323 is not properly performed.

In order to solve this problem, the cooking appliance of this embodiment switches the combustion operation to the partial operation step (S2) at a point in time when the combustion instability problem of the lower heating unit 323 may appear during the simultaneous operation step (S1). And, through this, the operation of the first heating unit 310 is stopped and only the operation of the lower heating unit 320 proceeds.

Accordingly, the cooking appliance of this embodiment prevents the airflow formed by the operation of the convection fan 317 from affecting the combustion of the lower heating unit 323, thereby stabilizing the combustion of the lower heating unit 323 , It is possible to prevent deterioration of the heating performance of the cooking appliance in advance.

As another example, the partial operation step S2 may be performed in a form in which the operation of the first heating unit 310 and the operation of the lower heating unit 320 are alternately performed.

In the partial operation step S2 made in this form, a process in which one of the first heating unit 310 and the lower heating unit 320 is performed first and then the other operation is performed is repeated.

The cooking appliance of the present embodiment, which performs the partial operation step S2 in this form, minimizes the influence of the operation of the first heating unit 310 on the combustion of the lower heating unit 320, while maintaining uniformity over the entire food. It is possible to effectively provide a heating function and an intensive heating function for a portion of the food at the same time.

As another example, the cooking appliance of this embodiment controls the operation of the first heating unit 310 and the lower heating unit 320 in a form in which the simultaneous operation step (S1) and the partial operation step (S2) are alternately performed. You may.

According to this, the cooking chamber 31 in a form in which the simultaneous operation step (S1) proceeds until the set point, the partial operation step (S2) proceeds, and the alternating of the simultaneous operation step (S1) and the partial operation step (S2) is repeated. The interior is heated.

In the operation control for the first heating unit 310 and the lower heating unit 320 made as described above, the time at which the switching from the simultaneous operation step (S1) to the partial operation step (S2) corresponds to the temperature inside the cooking chamber 31. It can be implemented in a dependent form.

For example, when the temperature inside the cooking chamber 31 reaches a set temperature while the simultaneous operation step (S1) is in progress, the first heating unit 310 and the lower heating unit 320 are in the form of a partial operation step (S2). ) Can be controlled.

When the combustion operation of the cooking appliance is controlled in this manner, the temperature of the cooking chamber 31 is rapidly increased to the set temperature through the simultaneous operation step (S1), and then the cooking chamber 31 through the partial operation step (S2). ), it is possible to reduce unnecessary consumption of energy by controlling the temperature of), so it is possible to provide an effect of effectively shortening the time required for cooking while reducing unnecessary consumption of energy.

In addition, in this process, when the operation of the first heating unit 310 is stopped and only the operation of the lower heating unit 320 is performed, the combustion of the lower heating unit 323 is stabilized when the partial operation step (S2) is performed. You can also get the effect of letting go.

According to the combustion control method of the cooking appliance according to the present embodiment as described above, it is possible to effectively shorten the time required for cooking while reducing unnecessary consumption of energy, as well as evenly heating the entire cooking compartment 31 to heat the entire food. There is an effect of providing a uniform heating function for uniform cooking and an intensive heating function for the bottom of food.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is only illustrative, and those of ordinary skill in the field to which the technology pertains, various modifications and other equivalent embodiments are possible. I will understand. Therefore, the true technical protection scope of the present invention should be determined by the following claims.

10: main body
11: back side
13: lower surface
15: side part
17: bottom
17a: Air inlet hole
18: outer panel
19: gasket case
20: cooktop
21: cooktop heating part
30: oven part
31: cooking room
32: door
32a: handle
33: lower space part
35: side space part
50: battlefield
51: control panel
52: input
310: first heating unit
311: fan cover
311a: intake port
311b: exhaust port
313: first heating unit
315: burner cover
316: reflecting plate
317: Convection fan
318: Convection motor
320: lower heating unit
321: lower case
321a: bottom part
321b: side wall
321c: Guide groove
321d: contact surface
322: through hole
323: lower heating part
325: guide plate
327: Air guide
328: through hole
330: flow path connecting member
331: first duct part
333: second duct part
335: coupling part
340: clip member
350: opening guide
360: guide protrusion
370: first support
371: first coupling part
373: first support
375: lowland
376: connecting plate
380: second support
381: second coupling portion
382: connection
383: second support
385: second branch
390: flow inducing member
a: 1st discharge port
b: 2nd discharge port
c: Guide Euro
O: open part

Claims (10)

A main body having a cooking chamber formed therein, a rear surface defining a rear boundary surface of the cooking chamber, a lower surface defining a lower boundary surface of the cooking chamber, and a side surface defining a lateral boundary surface of the cooking chamber;
A lower space portion formed inside the main body and forming a space separated from the cooking chamber between the bottom of the main body and the cooking chamber;
A lower heating unit installed in the lower space; And
Includes; a flow path connecting member connecting between the lower heating unit and the cooking chamber,
In the lower space part, an opening part for opening the lower space part to the outside is formed between the bottom of the main body and the cooking chamber,
The lower heating unit is a cooking appliance inserted into the lower space part through the opening part or drawn out from the lower space part.
The method of claim 1, wherein the lower heating unit,
A lower heating unit generating heat; And
The lower heating part is installed inside and includes a lower case slidably inserted into the lower space through the opening part from the outside of the main body,
The lower case may include a bottom portion forming a bottom surface of the lower case, a plurality of sidewall portions extending upwardly from the bottom surface portion to form a side surface of the lower case, and at least one of the sidewall portions. It includes a first discharge port forming a passage for opening the inside of the lower case to the outside,
In the side portion, a second discharge port is formed to form a passage for opening the inside of the cooking chamber to the outside,
The flow path connecting member is detachably coupled to the main body and the lower case to form a guide flow path connecting between the first discharge port and the second discharge port,
The first discharge port is formed on the side wall portion disposed on the side of the opening portion and the side wall portion disposed opposite the opening portion, respectively,
The second discharge ports are respectively formed on a pair of side surfaces facing each other,
The flow path connecting member includes a first flow path connecting member disposed on the side of the opening to form the guide flow path, and a second flow path connecting member disposed opposite the opening to form the guide flow path,
The first flow path connecting member is fixedly coupled to the side portion and the side wall portion, respectively, at the side of the opening portion to fix the lower case to the main body.
The second flow path connecting member is fixedly coupled to the side portion opposite the opening portion, and the cooking appliance is detachably contacted with the side wall portion.
The method of claim 2,
The main body further includes a side space portion provided on a side of the main body to form a space separated from the cooking chamber on the side of the cooking chamber,
The opening part is formed between the lower space part and the side space part to form a passage connecting the lower space part and the side space part,
The lower case is a cooking appliance that is slidably installed in the lower space.
The method of claim 2,
The lower surface portion is formed to be integrally connected to at least one of the rear portion and the side portion to partition between the cooking chamber and the lower space portion.
The method of claim 4,
The lower case further includes a contact surface portion forming a contact surface with the lower surface portion at an upper portion of the side wall portion,
The contact surface portion is bent at an upper end portion of the side wall portion to form a plane parallel to the lower surface portion.
According to claim 2
The flow path connecting member includes a duct portion installed outside the cooking chamber to form an outer wall surrounding the guide flow path from the outside, and a coupling portion coupling the duct portion to at least one of the lower case and the side portion,
The guide passage is a cooking appliance that forms a passage connecting the first discharge port and the second discharge port in a space surrounded by the duct part.
The method of claim 6,
The coupling portion is formed to protrude from the edge of the duct portion in contact with the side portion or the side surface of the lower case, and formed to form a plane parallel to the side portion or the side surface of the lower case, and is in surface contact with the side portion or the lower case, and is coupled to cooking device.
The method of claim 8,
A cooking appliance further comprising a clip member provided outside the side portion and pressing the coupling portion toward the side portion to be in close contact with the side portion.
The method of claim 2,
The main body further includes a side space portion provided on a side of the main body to form a space separated from the cooking chamber on the side of the cooking chamber,
The opening part is formed between the lower space part and the side space part to form a passage connecting the lower space part and the side space part,
The lower case is installed to be slidable in a lateral direction in the lower space and is withdrawn from the lower space through the opening and the side space,
The first flow path connecting member is a cooking appliance that is separated from the main body together with the lower case when the lower case is withdrawn.
The method of claim 2,
The main body includes a bottom portion defining a lower boundary surface of the lower space portion,
A cooking appliance having a support for supporting the lower case so that the lower case inserted in the lower space is disposed at a set position on the bottom portion.

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